Pressure release valve for conveyance of gas station

Abstract

The invention discloses a pressure release valve for conveyance of a gas station. The pressure release valve comprises a shell and a piston. The piston is a cylinder body with one end closed, the outer peripheral wall of the closed end of the piston is expanded outwards to make contact with the inner wall of the shell, a first spring is arranged between the inner wall of the shell and the closed end of the piston, the shell is provided with pressure release holes, two blind holes are formed in the inner wall of the shell, second springs are arranged in the blind holes, one ends of movable blocks are connected to the second springs, the other ends of the movable blocks are connected to sealing plates, grooves are formed in inner side walls of the sealing plates, and protrusions are provided with balls matched with the grooves. According to the valve, the piston does reciprocating motion through deforming and restoring of the first spring and the second springs, and then the sealing plates can seal or open the pressure release holes; and torsion springs are adopted, and therefore the first spring and the second springs can adapt to non-directional working stress generated by continuously impacting the piston by gas with unstable flow speeds, and the service life of the first spring and the second springs can be guaranteed.

Description

technical field [0001] The invention relates to a pipeline pressure relief device, in particular to a pressure relief valve for gas station transportation. Background technique [0002] Long-distance pipelines refer to the long-distance pipelines used to transport commodity media, such as oil, gas, etc., between origins, storage warehouses, and user units, and cross provinces, cities, cross, rivers, roads, etc., with a pressurized pump station in the middle. . The long-distance gas pipeline is the main artery of the national economy, directly serving the production of industries along the line and the ordinary life of urban residents. However, pipelines are also a source of danger. For high-pressure gas pipelines, the internal pressure is high, and all flammable gases are transported. During the transportation process, if the air pressure is unstable, it may cause the pressure in the pipeline to be too high and cause an explosion. . If the natural gas is transported in th...

AI Technical Summary

Problems solved by technology

However, when there is overpressure in the long-distance pipeline in the prior art, the high-pressure relief valve often fails to open and release pressure normally, which brings great harm to the transportation of the oil pipeline. Cause fire, etc.; on the other hand, there are also defects that the high-pressure relief valve leaks, or cannot be closed normally after opening

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