Liquid pipeline dead oil segment pressure relieving device

Abstract

The invention discloses a liquid pipeline dead oil segment pressure relieving device. The device comprises a liquid pipe, a tee joint, a blow-down pipe and a controller, wherein the liquid pipe is sequentially provided with a first valve and a second valve from the upstream to the downstream; a first connecting end of the tee joint is connected with the section, between the first valve and the second valve, of the liquid pipe, a second connecting end of the tee joint is connected with the input end of a pressure monitoring alarm device, and a third connecting end of the tee joint is connectedwith the input end of the third valve; the blow-down pipe is connected with the output end of the third valve through a pressure relieving pipe; and the controller is connected with the output end ofthe pressure monitoring alarm device. The liquid pipeline dead oil segment pressure relieving device has the beneficial effects that the pressure monitoring alarm of a liquid pipeline dead oil segmentis more timely in speed and higher in the accuracy rate, thus being capable of conducting pressure relieving on the liquid pipeline dead oil segment timely so as to improve the safety of the liquid pipeline and surrounding personnel and property.

Description

technical field [0001] The invention relates to the technical field of infusion pipelines, in particular to a pressure relief device for a dead oil section of a liquid pipeline. Background technique [0002] During the operation of the liquid pipeline, for the pipeline of the dead oil section, it is not considered in the design process or the temperature rise and expansion of the internal liquid are considered to be within a safe range during the design. No safety relief valve or thermal expansion valve is installed, resulting in liquid seepage from the flanges of valves and other flanges due to temperature rise in the dead oil section of the liquid pipeline, which eventually leads to safety accidents, causing great adverse effects on society and enterprises , It also brings a serious threat to the life and property safety of the people around the pipeline. If the relevant information such as whether the pressure of the pipeline in the dead oil section has risen is not gras...

AI Technical Summary

Problems solved by technology

No safety relief valve or thermal expansion valve is installed, resulting in liquid seepage from the flanges of valves and other flanges due to temperature rise in the dead oil section of the liquid pipeline, which eventually leads to safety accidents, causing great adverse effects on society and enterprises , which poses a serious threat to the lives and properties of the people around the pipeline

If the relevant information such as whether the pressure of the pipeline in the dead oil section has risen is not grasped in time, and timely processing is performed, it will cause liquid leakage, causing environmental pollution and personal and property losses.

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