Liquid pipeline dead oil section pressure relief device and method

Abstract

The invention discloses a liquid pipeline dead oil section pressure relief device and method. A liquid pipeline is sequentially provided with a first valve and a second valve from the upstream direction to the downstream direction; a pressure monitoring and warning device is arranged on the liquid pipe between the first valve and the second valve and connected with the liquid pipeline through a gauge valve; a three-way pipe is arranged between the gauge valve and the pressure monitoring and warning device, the gauge valve is connected with the first connecting end of the three-way pipe, and the pressure monitoring and warning device is connected with the second connecting end of the three-way pipe; the inlet end of the third valve is connected with the third connecting end of the three-way pipe, and the outlet end of the third valve is connected with a discharge pipe; and a controller is connected with the pressure monitoring and warning device. The invention further discloses a liquid pipeline dead oil section pressure relief method. The method includes the steps that a critical pressure value is set; the pressure monitoring and warning device is started; the pressure monitoring and warning device acquires the pressure of the liquid pipeline in real time and transmits the pressure to the controller; the controller analyzes the received pressure signals; and if the pressure value exceeds the critical pressure value, the pressure monitoring and warning device gives an alarm, and the controller controls a pressure guide pipe to relieve the pressure.

Description

technical field [0001] The invention relates to the technical field of infusion pipelines, in particular to a pressure relief device and method 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 ...

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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