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神农架2W-320-32BS

2021-06-05 15:38:12
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神农架2W-320-32BS
Detailed introduction:

网络优化资料:

(1) Reduce the height of the valve structure as much as possible (the height of the valve flow section from the center line to the top of the valve to reduce the depth of the buried pipe).


The top of the valve should be equipped with a fully enclosed opening and closing indicator to facilitate the inspection of the valve's working status, which is very important for operational safety.


The full-diameter design reduces the flow resistance and facilitates the passage of pipeline cleaners or pipeline detectors. It should also meet the closing requirements of the openings on the uninterrupted oil pipeline.


Fourth, the sealing performance is reliable. The soft seal valve is not allowed to have any internal leakage under 111 times the rated working pressure, while the hard seal valve is allowed to have an internal leakage of less than 13DNm3/s under 111 times the rated working pressure. This requirement for refrigeration solenoid valves is more stringent. For example, the internal leakage of a gas valve with a nominal diameter of 500mm cannot exceed 9ml/min, and external leakage is never allowed.


The gas valve shell used in the underground pipeline network should have anti-corrosion performance. It is recommended to select different shell materials according to the pipeline's conveying medium and operating pressure.


6. The design of valve parts should consider the use of maintenance-less or maintenance-free structure to minimize the workload of pipeline solenoid valve inspection and maintenance, and reduce road closures that affect traffic due to valve inspection and maintenance.


Most of the valves in underground pipelines are opened and closed manually. The valve opening and closing torque is required to be small, and the number of turns in the whole process is reasonable. In the event of an accident, the gas source can be cut off as soon as possible.


The various pipelines under the urban roads in our country are crowded and complicated, and it is not suitable to excavate the basement manholes. Directly buried valves are recommended.


2W-320-32BS

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