Two-way pressure relief valve

Abstract

The invention discloses a two-way pressure relief valve. A branch pipeline with a branch valve is arranged on a main pipeline, wherein the branch pipeline is connected in parallel with a main valve, and a pressure reducing bin with a plurality of pressure reducing valve blocks are connected in series in the branch pipeline. By arranging the pressure relief branch pipeline connected in parallel with the main pipeline, auxiliary two-way pressure relief and flat pressing functions are realized after the main pipeline is closed. Through the pressure reducing bin connected in series in the branch pipeline, the buffer pressure reducing effect is achieved. Through the flexible pressure reducing valve blocks, certain deformation is generated when the two-way pressure relief valve is impacted by pressure to support liquid discharging. By adjusting the number of pressure reducing valve blocks, the working pressure of the pressure reducing bin can be adjusted. Through the different spacing between the pressure reducing valve blocks, the pressure can be reduced differentially in a progressive mode. Compared with an existing pressure relief valve, the two-way pressure relief valve has the simple structure, small size, small use limit and high reliability, can effectively reduce and smooth the bidirectional surge pressure in a transportation pipeline, and has high practicability and wide applicability.

Description

Technical field [0001] The invention relates to a pressure relief valve, in particular to a two-way pressure relief valve, and belongs to the technical field of water conservancy engineering. Background technique [0002] With the progress of society, more and more gases and liquids need to be transported through pipelines in the development of urbanization, such as urban water supply pipelines, water diversion pipes of hydropower stations, and oil and natural gas pipelines. [0003] Long-distance pipeline transportation often needs to close the main valve when working conditions change. When the main valve is closed, the upstream and downstream pressures will fluctuate violently. In order to protect the pipeline and related equipment, the pressure relief valve will be created. However, the traditional safety relief valve usually consists of a spring direct opening or main safety valve, an impulse valve, and inlet and outlet signal piping systems. There are usually phenomena such...

AI Technical Summary

Problems solved by technology

Usually there are complex systems, many hidden troubles, inconvenient performance adjustment, slow pressure relief protection, etc.

Moreover, traditional pressure relief valves are often limited by unfavorable conditions such as processing technology restrictions, and the pressure relief capacity is difficult to meet the demand

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