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Bracket

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The price of the product name is higher than that of the previous month. Φ6.5mm than last week. Q235 Masteel 5000 80 90 500 Puline Φ8mm Q235 Masteel 5000 80 90 500 High Line Φ6.5mm Q235 Masteel 5050 100 130 500 High Line Φ10mm Q235 Masteel 5050 100 130 500 High Line Φ6.5-12mm Q335 Jiyuan 5000 50 150 450 Rebar Φ12mm HRB335 Masteel 5200 70 100 500 Rebar Φ14-25mm HRB335 Ma Steel (Hefei) 5020 70 100 470 Rebar Φ14-25mm HRB335 Ma Steel (Anshan) 5020 70 100 470 Rebar Φ16-25mm HRB335 Yong Steel 4850 30 50 370 Rebar Φ16-25mm HRB335 Jigang 4990 60 80 460 Rebar Φ16-25mm HRB335 Angang 4990 60 80 460 Rebar Φ16- 25mm HRB400 Yong Steel 5050 30 50 400 Rebar Φ16-25mm HRB400 Jinan Steel 5180 50 160 480 Rebar Φ16-25mm HRB400 Ansteel 5050 20 50 400 Hot Rolled Roll 3.0mm*1500*C Q235 Ma Steel 5400 0 100 450 Hot Rolled Roll 3.0mm*1500*C Q235 Sha Steel 5400 0 100 450 Hot Roll 3.75mm*1500*C Q235 Ma Steel 5280 0 80 530 Hot Roll 4.75mm*1500*C Q235 Ma Steel 5280 0 80 530 Hot Roll 3.75mm *1500*C Q235 Jiu Steel 5250 0 100 550 Hot Roll 4.75mm*1500*C Q235 Jiu Steel 5250 0 100 550 Hot rolled coil 5.5mm*1500*C Q235 Jiu Steel 5250 0 100 550 Hot Roll 5.75mm*1500*C Q235 Jiu Steel 5250 0 100 550 Cold rolled sheet 1.0*1000*2000mm ST12 Wu Steel 6350 0 0 750 Cold rolled sheet 1.2 *1250*2500mm ST12 Wuhan Iron and Steel 6300 0 0 750 Cold rolled steel plate 1.5*1250*2500mm ST12 Wuhan Iron and Steel 6300 0 0 750 Cold rolled plate 2.0*1250*2500mm ST12 Wuhan Iron and Steel 6300 0 0 750 Cold rolled coil 1.0*1250*2500mm ST12 Masteel 6300 0 0 700 Puzhong Plate 8mm Q235 New Steel 6250 100 350 850 Puzhong Plate 10mm Q235 Masteel 6150 100 350 970 Puzhong Plate 12-14mm Q235 Masteel 5950 100 350 870 Puzhong Plate 16-25mm Q235 Masteel 5950 100 350 870 Puzhong Plate 16-25mm Q235 Handan Steel 5950 300 400 900 Low Alloy Plate 8mm Q345 New Steel 6350 100 350 870 Low Alloy Plate 10mm Q345 New Steel 6250 100 350 880 Low Alloy Plate 12-14mm Q345 New Steel 6100 100 300 900 Low Alloy Plate 16-20mm Q345 Ma Steel 6100 100 300 900 Diamond Plate Roll 3.5mm*1250*C H-Q235 Ma Steel 5150 0 0 400 Diamond Plate Roll 4.5mm*1250*C H-Q235 Ma Steel 5150 0 0 400 Pattern Plate Roll 5.5mm*1250*C H-Q235 Ma Steel 5150 0 0 400 Seamless Pipe 57*3.5 20# Wuxi 6400 0 550 650 Seamless Pipe 60*4 20# Wuxi 6400 0 550 650 Seamless Pipe 159*6 20# new More than 5900 0 300 300 Seamless tube 325*9 20# Steel cladding 6500 0 250 250 I-beam 25# Q235 Wugang 4900 0 0 450 I-beam 36# Q235 Lay steel 4900 0 0 450 Channel 16# Q235 Masteel 4950 0 0 350 Channel 25# Q235 Wugang 4900 0 0 300 Angle 50*5mm Q235 Masteel 5050 0 0 300 Angle 80*8mm Q235 Masteel 4900 0 0 270

Sublimation Sports Bottle

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The distribution network neutral point adopts a small current grounding method with a series of advantages, so it is adopted by power distribution systems in many countries. However, since the fault current is very small when the single-phase grounding of the small-current grounded power grid is very small, the single-phase grounding protection problem has not been well solved. In fact, using conventional relay protection devices can not detect fault lines at all, and fault line selection must use dedicated line selection devices. This special device was born in China in the 1980s, but due to the complexity of the line selection problem, the accuracy of the line selection of these devices is very low, so that we must use manual routing methods.

In China, existing line selection devices theoretically use high-order zero-sequence currents (mainly five times) to achieve fault line selection. However, due to the small proportion of the harmonic components used in the device in the signal, it is difficult to separate and extract, and the harmonic interference of the load makes the device based on the principle of harmonics misjudge in actual operation. Most of the rest of the line selection methods are based on the analysis of the steady state signal after the fault, but the small current grounded grid has a small ground current in steady state, which reduces the accuracy of the protection line selection based on amplitude comparison, and the protection based on phase comparison is prone to error. Select [2,3]. In view of these problems and the actual production needs, we designed this fault line selection device. It uses wavelet transform to extract the characteristic components of the transient catastrophe signal, and uses the transient information to select the line. It solves the problem of traditional line selection methods using steady-state information for low line selection accuracy and enhances the anti-interference ability. In addition, the device is applicable to all small-current grounding systems, including a small-current grounding system equipped with only two-phase current transformers, which overcomes many of the previously proposed line selection methods that fail when only two-phase current transformers are installed in the system. defect.

1. The principle of software and hardware design of the system

The main reason for difficulty in line selection of small-current grounded networks is that the fault current is line-to-ground capacitive current when the single-phase grounding is connected. The value is very small, and the variation before and after the fault is very weak. In addition, the single-phase ground fault condition is complicated and the length of the different systems is different from the feeder length. The neutral point grounding method and other aspects are quite different, and the system operation mode is changeable, requiring a high flexibility and adaptability of the line selection device [4].

1.2 Wavelet Algorithm [5 ~ 7] Wavelet analysis is a new type of time-frequency transformation theory. The biggest difference between it and Fourier analysis lies in adding a “time frequency” window to the signal to be processed, and it can automatically Adjust the size of the window to ensure that you capture the desired information in the signal. At the same time, the wavelet transform is particularly effective for analyzing mutated signals. This is what the Fourier analysis failed. Since a single-phase ground fault signal may contain many spikes or abrupt changes, as well as many noise disturbances, the use of traditional Fourier transform analysis is powerless for denoising non-stationary signals, because Fourier analysis is to completely eliminate signals. Analysis in the domain, any mutation of the signal on the time axis will affect the entire spectrum of the signal. The wavelet analysis can analyze the signal in the time-frequency domain at the same time, and there is an "auto-zoom" function, so it can effectively distinguish the abrupt part of the signal and the noise.

In practice, continuous wavelets need to be discretized. This discretization is for continuous scale parameter a and continuous shift parameter b, not for time variable t. The corresponding discrete wavelet function ψj,k(t):

The device uses wavelet transform to decompose a signal into wavelets of different scales and positions. Wavelet and wavelet bases are used to carry out wavelet transform on the characteristic components of transient currents, and then the wavelet transform of the transient signals of each line is compared with the principle of wavelet transform modulus maxima. To achieve fault line selection. From the amplitude point of view, the current traveling wave signal of the non-faulty line is only the transmission component of the traveling wave of the faulty line, so the corresponding wavelet transform modulus maximum is also small, while the current line wave signal of the fault line is under the wavelet transformation. Its modulus maximum is the largest. The line selection is initiated by the variation of the zero-sequence voltage (U0). The sudden change of U0 is the time of the fault. The specific line selection scheme is as follows.

1) Due to the existence of electromagnetic coupling between parallel multi-wires, phase mode conversion can be used to decouple them for analysis and calculation. For phase A and phase C faults, the current data of the first and second phases of the phase A and phase C faults are taken and calculated. The β-mode current [8]; for the B-phase fault, take the A-phase current before and after the two-cycle fault data and calculate the mutation.

2) A threshold selection algorithm based on Stein's unbiased risk estimation theory [9] is used to de-noise β-mode currents (A and C phase faults) or phase A current (B-phase faults) of n lines.

3) Then according to Mallat algorithm, use Daubechies3 wavelet to carry out multi-scale wavelet transform on the de-noised signal. The scale wavelet coefficients of each scale are defined as cdjk(j=1,2,...,x;k=1,2,...,n ). Among them, j is the decomposition scale, x is the decomposition scale of the power frequency component in the wavelet decomposition frequency band, and k is the line number.

4) Calculate the respective return lines |cdjk|, calculate the wavelet decomposition scale j where each line is the largest, and define the subspace where j is relatively dense as the line selection space.

5) Find the module maxima of the wavelet transforms in the same line selection space for each line and compare them, and compare the first three which have the largest amplitude values ​​with each other. If one is opposite to the other two, judge the maximum value. The line is grounded, otherwise the bus is grounded.

2 system hardware design

2.1 Hardware Schematic In order to ensure the realization of the above functions, the functional components and composition of the device.

2.2 Hardware Design In order to ensure the high accuracy of the system measurement and the reliability of the operation, the following work has been done on the design of the hardware circuit:

1) The host adopts PC-class industrial control computer, which is characterized by high reputation of the manufacturer, mature technology and good versatility, and is suitable for making general-purpose products.

2) The input frequency response of the current transducer is in the range of 25Hz to 5kHz and the accuracy level is 0.1. With AC and DC common, high precision, high isolation, wide frequency response, fast response time, low drift, low power consumption, wide temperature range and other characteristics [10].

3) To prevent signal aliasing, the current signal is filtered by the MAX274 low-pass filter to remove high-frequency components of the signal before A/D sampling. MAX274 is an 8th-order continuous-time active filter introduced by MAXIM in the United States. It contains a number of (2) MAX274 4th-order state variable filter units. It requires no external capacitor and only requires an external resistor. A low-pass, band-pass filter that operates from 100Hz to 150kHz. Its center frequency, turning frequency, Q value, magnification, etc. can be determined by external resistance, and parameter adjustment is very convenient.

4) The data acquisition card uses a self-designed data acquisition card with a TMS320-VC5402 DSP as the CPU. Since the criteria for line selection mostly depend on the current values ​​at the same time of each outgoing line, simultaneous sampling techniques are needed to simultaneously perform multi-channel signals. Sampling is performed so that the phase relationship between the measured signals is consistent with the original signal. We use the MAX125ADC from Maxim to achieve simultaneous acquisition of multiple channels. The MAX125 is a high-speed multi-channel 14-bit parallel data acquisition chip with internal synchronous sample and hold. The chip contains a 14-bit, successive-analog-to-analog converter with a single-channel conversion time of 3μs. A set of sample/hold circuits that can simultaneously sample four input signals simultaneously. The MAX125 has an alternate switch in front of each sample/hold circuit so that there are a total of eight input channels (groups A and B), but only one of them can be sampled at the same time each time. , 12]. In practical applications, three MAX125s are simultaneously activated by the XF pin of the TMS320VC5402 or an external clock signal for A/D conversion. When 3 MAX125

Take 3 pieces of MAX125 each 4 times, can read the result after conversion, achieve the function that realizes and collects to 12 signals at the same time.

2.3 Acquisition board principle The part in the dashed box in Figure 3 is the hardware block diagram of the sampling processing unit. It uses C5402DSP as CPU, mainly consists of 1) peripheral auxiliary circuit 2) program/data memory 3) analog input channel 4) switch input/output channel 5) communication serial port 6) C5402 and PC industrial computer communication interface circuit and other six parts composition.

The use of the C5402DSP as the CPU is to reduce the burden of continuous sampling on the system. For example, the sampling rate is 10k. In the case of no hardware buffer device, the interruption period is 1/10k=100μs. Traditional operating systems such as Windows and Linux are mainly designed for multitasking. The scheduling subroutines are mainly The method of averaging time slots is used to solve multi-tasks. The base value unit of this time slice is called the global variable jiffies. In traditional operating systems, this value is generally around 10 ms. Obviously, it is difficult to meet our requirements. Corresponding to the above situation under normal circumstances, the common acquisition board processing method is to add FIFO. The FIFO is a first-in, first-out memory, and AD sequentially writes data, and the user can read the data in real time at the same time. The flag bits normally used in the FIFO are: "Half Full-HF" and "Overflow-FF". When the FIFO is operated with HF=0, the user can continuously read out the sampling data at a time, and the non-stop AD writes data to the FIFO. If the FF FF bit is 0, it indicates that the FIFO overflows and the read data will lose data, so the user must keep the FIFO from overflowing. However, this method of adding FIFO can only suspend the problem of interruption and cannot solve the problem fundamentally.

The following is an example of an ordinary acquisition board with FIFO capacity of 1k, 8-channel A/D and sampling rate of 10k:

The number of points collected during each interruption is N=512/8=64; the interruption interval T=64/10000=6.4ms.

It can be seen that if the sampling rate is so high or higher, it is difficult for the general operating system to run stably. Another problem that arises when using FIFO at the same time is the real-time determination of the fault. After using the FIFO, it is necessary to determine the fault at intervals. It is difficult to accurately locate the fault point when the fault signal has no obvious sudden change. However, the above problem does not exist for the current acquisition unit because the TMS320VC5402 adopts an enhanced Harvard architecture. The eight internal buses allow the chip to maximize its processing capability. The independently addressable 64k data space and 1M program space allow simultaneous access to program instructions and data. The six-stage pipeline operation guarantees a processing speed of 100 MIPS (millions of instructions per second). This is fully qualified for the general required sampling rate, which allows for point-by-point calculations of the acquired data to greatly improve accuracy and accuracy [13].

2.4 Implementation of Communication between Acquisition Board and Host

This system is a master-slave type structure, the host is a PC industrial control machine, and the slave is a TMS320VC5402 DSP. They establish a connection through a PC ISA bus. The PC can read and write its on-chip RAM storage unit through the HPE port of the C5402, and the C5402 can't read or write the host's storage unit. The two parties use the interrupt mode to communicate with each other. When a conventional MCU interfaces with an external host, it is necessary to externally expand necessary hardware circuits. When the microcontroller needs to share RAM with the host, it needs to extend the RAM, trigger, and latch the chip outside the chip, and then the host accesses the expansion RAM through DMA, so that the host can access or share the RAM randomly or in a block. In addition, at least one latch must be extended outside the chip so that the microcontroller can interrupt the host. TI's TMS320C5402HPI interface integrates the above functions into the DSP, making it easy to connect to the host. And because HPI is integrated into the chip, the host can achieve high access speeds and meet the high speed requirements in digital signal processing. In practical applications, the PC sends some control commands and data to the C5402, which mainly includes:

1) Sampling command to control start and stop of C5402 sampling;

2) The parameter modification command informs C5402 to modify the parameters and setting values;

3) Data upload command to notify C5402 to upload sampling data.

At the same time, C5402 should also inform the PC of its own operating status and detected information, including:

1) normal operation;

2) Fault startup status.

In order to achieve the above two-way information exchange, two storage units can be defined in the internal RAM of the C5402. One is a command unit for storing command words sent from the PC to the C5402, and the other is a status unit for storing the symbol C5402 system. State of the status word. In addition, two storage areas are divided from the internal RAM of the C5402. One is a Host area for storing data transmitted from the PC to the C5402, and the other is a Slave area for storing data to be transmitted to the PC by the C5402. When the PC wants to send commands and data to the C5402, it first writes the command word and data into the command unit and the Host area, and then sends an interrupt request signal to the C5402. After the C5402 responds to the interrupt, the command word and data are read out and commanded. The word completes the corresponding operation. The PC can read the status unit at any time to obtain the status information of the C5402 system. In normal operation, the value of the C5402 status word is initialized to 0000H. After the fault occurs, when the C5402 needs to upload necessary data information to the PC, the status word and data are written into the status unit and the Slave area, and an interrupt request is sent to the PC. After the PC responds to the interrupt, the status word and data are read. Out, and according to the status word to complete the appropriate operation.

2.5 Experimental verification of the acquisition board

In order to verify the correctness of sampling and processing units and to be used in fault line selection devices, the following experiments were completed. The test signal is generated by a signal generator: sinusoidal signals with levels of -1V to 1V and frequencies of 50Hz and 200Hz, respectively. During the test, the A/D sampling clock signal was generated using the XF pin of the DSP. The sampling frequency was set by the DSP's internal timer and was 1.6 kHz. For a 200 Hz input signal, 8 points are sampled in one cycle; for a 50 Hz input signal, 32 points are sampled in one cycle. The sampled data is stored in the DSP's internal RAM, which is then read by the IPC via the ISA bus, saved to the hard disk as a file, and finally displayed in MATLAB. It can be seen that the sample recovery waveform coincides with the original waveform and is very smooth. Through the above tests, it can be affirmed that the design of the sampling and processing unit is successful.

3. The main functions and features of the device

1) Under normal conditions, the device monitors the zero-sequence voltage (U0) variation in real time and does not perform any analysis on the sampling data. When a single-phase ground fault occurs, the monitoring program issues a command and the hardware triggers the device. The device then saves the data in the current data window, downloads the collected data to the hard disk of the computer and starts the line selection algorithm, and gives the line selection result.

2) Failure phase selection. If the lowest voltage phase voltage is less than K times the rated phase voltage, the lowest voltage phase is the ground phase; if the three phase voltage is greater than K times the rated phase voltage, the next phase of the highest voltage phase is the ground phase; in the actual fault phase The K value in the judgment should be less than 0.823. Neutral arc suppression coil grounding system to distinguish the fault phase and neutral point ungrounded system is similar to the above method of "the next phase" to "the previous phase" can [14].

3) Determine the fault line, issue a line selection signal or trip. If the fault cannot be determined using the transient method, the steady-state method is started for calculation: FFT decomposition of the sampled values, queuing by fundamental or 5th harmonics (using fundamentals for NUS and NRS, harmonics for NES), The first three with the largest amplitude perform the phase comparison. If one is opposite to the other two, the line is judged to be grounded. Otherwise, the bus is grounded.

4) Each data acquisition board can monitor 12 lines at the same time.

4 Conclusion

When single-phase grounding occurs in a small-current grounding system, the frequency, amplitude, and phase parameters of the fault current transient have a clear correlation with the fault characteristics. The transient component of the grounding capacitor current is often several times larger than its steady-state value. Dozens of times, the device adopts the wavelet analysis theory of the line processing algorithm that can accurately process the mutated and faint non-stationary fault signal. The line selection algorithm solves the traditional line selection method and uses the steady state information to select the line accurately. The low problem, in addition to the fault line selection device to monitor multiple lines at the same time and collect multi-channel power information, data analysis and processing tasks are arduous. The digital signal processing chip (DSP) has fast calculation ability and powerful data processing capability, and can provide powerful hardware support for fault line selection. For this purpose, a real-time multi-channel synchronous data acquisition system is constructed using a DSP to ensure synchronization, real-time performance, and accuracy of the multi-channel signal measurement. The implemented device can meet the needs of actual operation.

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BLD110 Explosion-proof lamp matters needing attention

1) According to the GB3836.15 standard, combined with on-site conditions, formulate specific periodic inspection and continuous supervision and maintenance system;

2) Before use, check that the supply voltage is the same as the rated voltage of the luminaire, to avoid damage to the luminaire due to voltage inconsistency;

3) Non-professionals must not disassemble lamps.

4) Lamps must be reliably grounded.

5) When changing the light source or disassembling the lamp, it must be done in a safe place.

6) Keep the surface of the lamp housing and transparent parts clean to ensure good light transmission;

7) Ambient temperature of the luminaire is between -40°C and 45°C. If it exceeds 45°C, forced ventilation is required.

8) Avoid the collision between the lamp housing and the hard object. During use and maintenance, the explosion-proof surface should be protected. There should be no bumps, scratches, or other dirt. If there is any dirt, use a non-metallic scraper to clean it, so as not to damage the explosion-proof surface. .

9) Regularly check the sealing ring for aging so as not to affect the sealing performance.

10) When using the wire to enter the lamp, the sealing ring shall be a three-hole sealing ring, and an explosion-proof accessory with packing and sealing shall be installed at the front stage of the lamp.

Bullet Proof Window

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Square غير مجاز مي باشدmetic Compact

We have many different kinds of square COMPACT CASE.

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color	Injection color,spray coating color and UV metalizing color
logo	Silk screan and hot staping
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Place of Origin	Zhejiang

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• Model NO.: JTH-4K

                                                                                                                                                                                                                                           

• Working: Convection Mixer

                                                                                                                                                                                                                                           

• Trademark: GMK

                               

• Mixer Type: Static Mixers

                                                                                                                                                                                                                                           

• Application: Liquid with Suspended Solids, Viscous Fluid, Liquid

                                                                                                                                                                                                                                           

• Origin: Foshan, Guangdong

                                                                                                           

                                                                    4K Sealant Mixing machine Automatic Metering Static Mixer

Specifications

G. M. K Static mixer is a kind of new-type mixing equipment for high visغير مجاز مي باشدity material, particularly suitable for continuous prod

Summary:

G. M. K Static mixer is a kind of new-type mixing equipment for high visغير مجاز مي باشدity material, particularly suitable for continuous production of silicone sealant. It is comprised of static mixer, hydraulic system, dosing and metering system, valve, integrated electric control system, pneumatic control system and frame, etc., among which the static mixer is the core of the entire equipment.

The working principle of static mixer is to let fluid flow in the pipes to impact different kinds of plate components, to increase the velocity gradient of the laminar motion of fluid or to form turbulence. At laminar motion, it is "separation— Locomotion— -re-confluence"; At turbulence, besides the above three, the fluid will also produce strong turbulence at section direction, with very strong shearing force effect on the fluid, for furthur separation and mixing of the fluid. Due to the function of mixing components, the fluid is sometimes levorotary and sometimes dextrorotary, constantly changing flow directions, not only pushing the fluid at the center to the rim, but also pushing the fluid at the rim to the center, and thus creating excellent radial mixing effects. Besides, the rotation of the fluid itself will also take place at the interface of neighboring components, forming perfect radial circular flow mixing effects. It is called "static" mixer because there are no moving parts inside the pipes, and there are only static components.

SV, SX, SL, SH and SK Series static mixers are the advanced mixing equipments in the country. They are widely used in fluid-fluid, fluid-solid, fluid-gas, gas-gas mixing, emulsification, absorption, extraction, reaction and enhanced heat transfer, etc. They are ideal mixing equipment for chemical, pharmacy, foodstuff, synthetic fiber, plastic, environmental protection, mining and metallurgy, paper making, coal gas and such industries, with the advantages of wide application range, high flexibility in operation, simple flow, reasonable structure, low investment, low energy consumption and quick return, etc.

Based on the characteristics of sealant, the company utilizes its own strong R&D force to develop new-type static mixer with independent intellectual property rights, which are particularly suitable for technical requirements of sealant industry, capable of realizing auto metering, auto feeding, continuous auto production of multi-constituent materials, and thus guaranteeing consistent product quality and greatly reducing production waste. This machine achieves world-advanced technology level, and can rival foreign equipment of the same kind, with very high غير مجاز مي باشدt performance.

Main Features
Multi-constituent static mixing and metering system
Automatic on-line feeding of catalyst
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Automatic Rotating Mixer  HT-30A

Specifications

1. 360 degree rotating and revoluting
2. LED display screen showing working time and error indicating
3. Max 20L drum each time

      This  Automatic Rotating Mixer is controlled by advanced frequency conversion aptitude.

      On the one side, which can automatic clamp and loose the paint can. On the other side, it can automatic recoginize the big or small can, to choose the suitable clampong and rotating force.

      The machine will stop when you open the door during its running to prevent the operator to be hurt.

      It can rotate and revolute at the same time, and you can choose the mixing timer by pressing diferent keyboard on the front panel, which is highly improve the mixing efficiency and accuracy.

      The digital display will show the actual time set and time used, so that the operator may have exact mixing time idea for better result.
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After Sales Service:

      The above machine which we supply it to you, we can give you one years after sales warranty, we can also send our engineer to your factory to install this equipment and train your staff, but the Buyer should pay the round air ticket غير مجاز مي باشدt and arrange the hotel accommodation as well as the means for Seller's engineer. We will send some free set of spare parts for you change it.

Payment Terms:

      30% deposit by T/T before production, 70% balance should be paid by T/T before shipment, but we also accept L/C.


Package:

       Packing in 1 cases, Wrap with plastic film first, then in paper and finally in wooden case.


Shipment Terms:

      We can accept EXW, FOB, CNF, CIF etc.

      Should you have any questions, please do not hesitate to contact me.

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Bestway Industries (Group) Co., Limited , https://www.military-tents.com

• Model NO.: XC-HL100KG

                                                                                                                                                                                                                                           

• Working: High Speed Mixer

                                                                                                                                                                                                                                           

• Application: Powder, Granules

                                                                                                                                                                                                                                           

• Application Area: Plastic

                                                                                                                                                                                                                                           

• Mixing Drum Shape: Drum

                                                                                                                                                                                                                                           

• Operating type: Continuous Operating

                                                                                                                                                                                                                                           

• Brand Name: Xiecheng

                                                                                                                                                                                                                                           

• Suit for: Plastic Pellets

                                                                                                                                                                                                                                           

• Lifetime: More Than 5 Years

                                                                                                                                                                                                                                           

• Motor Rotating Speed: 85r/Min

                                                                                                                                                                                                                                           

• for: Plastic Mixer

                                                                                                                                                                                                                                           

• Trademark: XIECHENG

                                                                                                                                                                                                                                           

• Origin: Jiangmen, Guangdong, China

                               

• Mixer Type: Pellet

                                                                                                                                                                                                                                           

• Stirring Type: Paddle Blade

                                                                                                                                                                                                                                           

• Certification: CE, ISO

                                                                                                                                                                                                                                           

• Layout Type: Verticle

                                                                                                                                                                                                                                           

• Additional Capabilities: Milling

                                                                                                                                                                                                                                           

• Condition: New

                                                                                                                                                                                                                                           

• Uغير مجاز مي باشدe: Plastic Industry

                                                                                                                                                                                                                                           

• Tank Material: Stainless Steel

                                                                                                                                                                                                                                           

• Warranty: 1 Year

                                                                                                                                                                                                                                           

• Tank Size: 730*730*550mm

                                                                                                                                                                                                                                           

• Capacity: 100kg

                                                                                                                                                                                                                                           

• Specification: 100*100*128 cm

                                                                                                                                                                                                                                           

• HS Code: 8477800000

                                                                                                           

                                                                    industrial blender machine 100KG Plastic Color Mixer Equipment machine vertical mixer

1. Vertical structure with castor wheel,small foot-print and easy to move;

2. Vertical reducer motoradopted ensured low noise and long operation hours;

3. Complete mixing with short time ,low engery consumption and high efficiency;

4. Pail cover and bottom parts and compress from precisely matched&durable;

Mixing timer able to set within 0-30 minute.

Stainless steel paddle with scientific structure, able to mix raw material completely;minimize load, save time and electricity;made of premium stainless steel,high strength and easy to clean

Jet Grouting Rig

Jet Grouting Rig Features: 

1.With multi-directional change-range mechanism, convenient to drill a series of holes with different heights and angles at the same position 

2.High rotary torque and longer stroke, high drilling efficiency

3.With track chassis and rotary device, easy and speedy to move

4.With hydraulic rod clamp and twist device, reduce auxiliary operation time and labor intensity

5.The major components in hydraulic system adopt the imported brand with a stable, reliable system, and they all have a long service life

6.Top-drive head driven by hydraulic, Continuously Variable speed regulation

7.Variable hydraulic system with load feedback, low energy consumption

8.With display unit for rotating speed of top-drive head, lift speed and verticality of derrick, quickly and accurately to fix position

9.Provide different top-drive head types, meet varying drilling technology

10.The main unit performance:

11. The hydraulic system adopts the direct dynamic fine-tuning variable load feedback system;

12. The main valve adopts the Italian Bloch pooh brand;

13. The main hydraulic pump is Italy Lishile joint technology

14. Walking motor uses the South Korean brand;

15. Equipped with hydraulic gripper, which can automatically remove the drill pipe

Jet Grouting Rig,Jet Grouting Grilling Rig,Tower Pressure Grouting Rig,Omnibearing Rotary Jet Grouting Grilling Rig

Henan YikYui Prospecting Machinery Co., Ltd , https://www.yikyui-rig.com

First, system inspection (general inspection)

(a) appearance inspection

1. Check whether all devices (such as the detector base, terminal box, manual button, and alarm controller, etc.) are fully installed and wired and ready for wiring.

2. Whether the system ground conforms to the requirements of the specification: when the automatic fire alarm system adopts a special grounding device, its resistance value shall not be greater than 4 ohms, and when it is used as a common grounding, it shall not be greater than 1 ohm; when fire-fighting electronic equipment uses AC power, its metal shell and metal bracket The ground should be connected to the protective grounding conductor (PE wire).

3. Check the shape of the detector for damage. If there is damage, it should be recycled by the manufacturer or professional maintenance company. This is because some ionic detectors contain radioactive substances.

4. Check whether the shape and structure of various knobs, switches, plug-ins, etc. of the alarm controller are in good condition.

(II) Function and performance check of alarm controller

1. Through the manual inspection device on the fire alarm controller,

Check whether the alarm controller's functions are normal, including whether the fire alarm, various types of fault monitoring functions, and silence functions are normal.

2. Cut off the AC power supply and observe that the standby power supply is automatically put into operation and all functions are normal.

3. Observe whether the indication value of each voltmeter and current meter is normal.

4. All indicators, switches, and buttons should be free of damage and poor contact.

5. When the function and performance of the alarm controller are checked through a manual inspection device, the automatic fire extinguishing, output control contacts, etc. shall not operate, and the clock shall not stop timing.

(III) System Function and Performance Check

1. When carrying out the actual simulation test of the detector, it is observed whether the sound and light display alarm of the alarm controller is normal, and whether the correspondence between the detection area number and the construction site is accurate.

2. When unscrewing any fire detector, there should be a fault display on the alarm controller.

3. If the automatic alarm system is connected with the automatic fire extinguishing device, the electrical connection between the automatic fire extinguishing device and the alarm controller shall be cut off before performing the system function and performance check. However, the status of the fire extinguishing control contact output from the alarm controller shall be checked, such as checking the output voltage. Whether the value or current value meets the requirements, etc.

Second, regular inspection

After the automatic fire alarm system is put into operation, regular inspections and tests shall be conducted to ensure the normality and reliability of the system.

(a) Daily inspection

The daily use unit should check whether the functions of the alarm controller and the zone alarm controller (such as the fire alarm function, fault function, reset, silence, etc.) are normal and whether the indicator light is damaged. The inspection method is as follows: Self-inspection and inspection functions can be checked by pulling the self-test and inspection switch to check whether the function is normal; if there is no self-test or inspection function, the method of adding smoke and heating to the detector can be used. The detector alarms to check if the function of the alarm controller or zone alarm controller is normal. If it is found to be abnormal, it should be recorded in the daily registration form and processed in time.

(b) Weekly inspection

Perform main and standby power automatic switching tests.

(III) Quarterly tests and inspections

1. According to the requirements of the instruction manual, the use of special smoke, heating tester (without special tools can be used electric hair dryer and other appliances) staged batch test detector action is normal, the indicator shows whether clear. Found that the fault should be replaced promptly.

2. The sound and light display of the test fire alarm device is normal. In the actual operation process, all tests or partial tests can be performed at once, but care should be taken to make arrangements before the test so as to avoid unnecessary panic and confusion.

3. Test the fire alarm system, water flow indicator, pressure switch and other alarm functions on the automatic sprinkler system pipe network, and the signal display is normal.

4. One or two charge and discharge tests are performed on the standby power supply, and the main and backup power supplies are switched automatically once or twice. The test method is: cut off the main power supply, see if switching to standby power supply, whether the standby power indicator light is on, and then restore the main power supply after 4 hours to see if it is automatically converted, and then check whether the standby power supply is normally charged.

5. The system with linkage control function shall check the display function of the fire control system of the fire control equipment automatically or manually. 1 Control equipment for smoke prevention equipment, electric fire dampers, electric fire doors, fire shutters, etc.; 2 Control equipment for indoor fire hydrants, automatic sprinkler systems, etc.; Control of fixed fire extinguishing systems such as halogenated alkanes, carbon dioxide, dry powder, foam, etc. Equipment; 4 fire accident broadcast, fire accident lighting and light evacuation signs.

6. Forced fire elevators stopped at the first floor.

7. Fire-fighting communications equipment should be conducted in the fire control room for conversational phone calls.

8. Check whether all transfer switches, such as power switch, fire switch, smoke control, fire door, fire shutter switch, alarm switch, emergency lighting switch, etc. are normal.

9. Mandatory cut off non-fire power functional test. This test should also be prepared in advance to avoid confusion and other accidents.

(D) Annual tests and inspections

Every year, all detectors installed shall be inspected and tested once again. Functional tests of other alarms, alarms, and linkage devices shall also be tested and checked according to the operating conditions of the system.

Third, the general failure and inspection

(a) Main power failure. Check whether the input power is in good condition, whether the fuse is blown or if it is in poor contact.

(b) Backup power failure. Check the charging device, battery for damage, and disconnect the cable.

(c) The detector circuit is faulty. Check whether the wiring to the fire detector is in good condition, whether the fire detector has been removed, and whether the terminal monitor is damaged.

(d) Misreporting of fire. It is necessary to investigate whether the presence of steam, oil and gas, dust, etc., which affect the normal operation of the fire detectors, exists on the scene of the false alarm fire detectors, and if so, how to eliminate them. For fire detectors with frequent false alarms and no other disturbances affecting normal work, they should be replaced promptly.

(5) Failures that cannot be eliminated for a time shall be immediately notified to the manufacturer, construction or professional maintenance unit for repair as soon as possible and resume normal work.

Tags: electrical fire electrical fire monitoring system electrical fire alarm electrical fire alarm electrical fire monitoring system

SANS1123 Flange

SANS 1123 is South African flanges standard, SANS 1123 old norm name SABS 1123, flanges pressure class 600 1000 1600 2500 4000, flanges type slip on plate, slip on hubbed, blank, screwed, welding neck. SANS 1123 flanges plate type also name 1000/3 or 1600/3, Slip On Plate Flange for 3, blind for 8, weld neck for 2, screwed for 4, slip on boss for 5, 1000/3 backing ring for HDPE pipes.

SANS 1123 Flanges manufacturer, slip on flange ff rf, blank flange ff rf, slip on hub flange, backing ring flanges galvanized

Jinan Hyupshin Flanges Co., Ltd , https://www.iflange.com