Lightning protection engineering design content and procedures 1. According to the basic rules of lightning activities and intrusion channels, the design of lightning protection projects must include the following: anti-radar, anti-inductive, anti-side lightning, and lightning protection. For a specific protection object, not all of the above listed contents are reflected in the design, but also depending on the characteristics of the protection object and the law of thunder and lightning activity at the location of the protection object. That is, the design content of the lightning protection project may be directed against the direct lightning strike; it may also be against direct lightning strikes and inductive lightning, or it may be a combination of two or more lightning protection designs. For buildings (structures) with a height of ≥ 30m, in principle, the design of the complete device for preventing side-impingement and direct lightning must be considered in three parts: the air-termination device, the deflector cable, and the grounding device. The types of lightning receptors are roughly: lightning rods, belts, nets, wires, rings, etc. There are only two types of deflector designs: one is for surface installation, and the other is for concealment. Grounding devices are available in the following types: vertical grounding, horizontal grounding, vertical and horizontal composite grounding, and ring grounding.
3. The main content of the anti-inductive lightning design is: equipotential grounding, that is, electrical communication between various metallic objects on the sky, cooling towers, billboards and lightning protection belts. Or make electrical connections to the vertical metal pipes installed inside and outside the building.
4. Intrusion of lightning protection into the design: The main consideration is to limit the impulse voltage and pulse current on the lightning channel. It is generally considered to install lightning arresters and overvoltage protectors on the channels, and to ground the high and low voltage inlet and outlet wires and the metal sheath of the cables.
5, the design process: the development of a design program - drawing design, drawing - drawing review - blueprint or copy - approval - delivery.
(1) Design plan: Based on the full set of data on the protective object survey and the user's special requirements, the design framework shall be formulated in accordance with the design specifications of GB50057-94 and other design standards. The performance is multi-person participation and collective research and molding.
(2) Drawing design and drawing—mainly represented by paperwork. The professional designers, according to the technical methods and principles of drawing, take the line as the main form, draw the construction plan, section drawing and structure construction drawing. Drawings include: drawing catalogs, various planes, profiles and construction plans, various data labels, various technical standards, and construction requirements.
(3) Drawing review - After the completion of the design draft, the designing staff of the design department will be responsible for designing technical and quality personnel to conduct a comprehensive technical quality review of the drawn drawings. Problems will be corrected and improved in a timely manner.
(4)Sketch drawings—After the audited drawings, they are drawn by professional planners to form a formal drawing blueprint or copy, and the conversion from design drawing to construction drawing is completed.
(5) Examination and approval: After the official drawings are all completed, the responsible person of the design technical quality shall report the full set of drawings to the responsible person of the company for review.
(6) Delivery - The approved drawings should generally be reproduced in three sets. One set is for construction use, one set is reserved by the user and the other set is archived by the design office.
Zhengzhou Leidi Electronic Engineering Co., Ltd. is a high-tech enterprise specializing in smart integration of lightning protection systems. The company is committed to the development, promotion and application of lightning protection technology and lightning protection projects. Leidi was established in 2009 with a registered capital of RMB 3 million and obtained the "Classification Certificate for Professional Design of Lightning Protection Engineering Grade B" issued by the State Meteorological Administration and "Professional Construction Grade B Qualification Certificate for Lightning Protection Engineering". There are dozens of technologies. The backbone obtained the provincial mine protection engineering and technology qualification certificate from the Lightning Protection Center of Henan Province. Provide customers with lightning protection engineering consulting, lightning protection system design, lightning protection engineering construction, technical training, lightning risk assessment analysis, system engineering maintenance of comprehensive information and lightning protection system intelligent integrated solutions and services.
After years of wind and rain, customers in Zhengzhou mines spread throughout the government, telecommunications, electric power, transportation, education, Petrochemicals, railways, and meteorology. The company has extensive experience in the design and construction of internal and external lightning protection projects such as direct lightning strike protection, various system grounding, low-voltage power system protection, and various types of communication system line protection, and all completed projects have undergone a number of thunderstorms. And has been highly recognized by the lightning detection department and users.
Pressure Vessels & Diesel Generator Set
The business of the company is the design, manufacture, repair and special painting protection of pressure vessels and cooler and exchanger, Our company is the supplier for CNPC,SINOPEC, CNOOC and SINOCHEM and the manufacturer for the auxiliary engine of compressor of SHENGU Group.
The company have pressure vessels A1 high pressure vessels(only for single level),A2 III low, medium pressure vessels and D1 I pressure vessels, D2 II low, medium pressure vessels. Now the company has been developing into a professional manufacturer with design, manufacture and maintenance of pressure vessels, also a professional manufacturer with design, manufacture, maintenance and anti-corrosion of cooler and exchanger. In the recent years, the company improved greatly in the production including mini equipments and extra-large equipments, normal carbon steel and special steel, stainless steel equipments to compound steel equipments., which can serves for customers with high speed and high efficiency, with great praise and reliance from both customers and the market.
Air Cannon,also known as air flow aid, arch breaker, and block remover, is a sudden strong airflow of compressed gas , which directly rushes into the occlusion fault zone of the storage of bulk materials at a speed exceeding Mach(sonic speed) .This sudden release of the expansion shock wave overcomes the static friction of the material and makes the material in the container flow again.
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Henan Youlong Petroleum Engineering Technology Co.,Ltd , https://www.youlongenergy.com
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