Pressure relief system for long-distance pipeline

Abstract

The invention discloses a pressure relief system for a long-distance pipeline. The pressure relief system comprises a pressure relief branch communicated to the long-distance pipeline, wherein the pressure relief branch is communicated with a buffer tank; a first pressure relief valve is arranged between the pressure relief branch and the buffer tank; the air inlet of the first pressure relief valve is communicated to the pressure relief branch; the pressure relief air outlet of the first pressure relief valve is communicated with the buffer tank; a second pressure relief valve is arranged on the buffer tank; the air inlet of the second pressure relief valve is communicated with the inside of the buffer tank; a pressure relief air outlet is communicated with the atmospheric air. According to the pressure relief system for the long-distance pipeline disclosed by the invention, the buffer tank is arranged on the pressure relief branch, and gas enters the buffer tank through the pressure relief valve to be stored without being directly exhausted into the atmospheric air when the pressure in the long-distance pipeline is too high, so that resource waste can be effectively controlled; when the pressure in the buffer tank is increased to a certain degree, pressure in the buffer tank is relieved through the second pressure relief valve.

Description

technical field [0001] The invention relates to the safety field of long-distance pipelines, in particular to a pressure relief system for long-distance pipelines. Background technique [0002] Long-distance pipelines refer to long-distance pipelines used to transport commodity media, such as oil and gas, across provinces, cities, across rivers, roads, etc. . 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, the pipeline is also a source of danger. For high-pressure gas pipelines, the internal pressure is relatively high, and all combustible 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 natural gas is transported in the pipeline, once an explosion occurs, it will cause a fire, and the flammable and explosive ...

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Problems solved by technology

[0003] In order to solve the defects in the above-mentioned prior art, the present invention provides a long-distance pipeline leaking device capable of quick response, stable sealing structure, good sealing effect, and no phenomenon of failure to open normally, air leakage and failure to close normally after opening. pressure system

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