A device and method for detecting the location of ice blockage in natural gas pipelines

Abstract

The invention discloses a device and method for detecting the ice blockage position of a natural gas pipeline. An operating maintenance person can rapidly determine the specific position of the blockage point, completely blocked due to icing, of the natural gas pipeline. The detecting device comprises a flow adjusting valve, a gas mass flowmeter, a pressure sensor, a temperature sensor, a measuring pipe, a communication valve, a high-pressure side adapter pipe and a low-pressure side adapter pipe which are arranged on a wholly mounted support, detection data of the gas mass flowmeter, the pressure sensor and the temperature sensor are collected by a data collection module and transmitted to a data analysis module, in combination with parameters of the physical property, and the pipeline inner diameter input by a data input module, calculation is carried out, the ice blockage position is obtained, and the detection result is displayed in a display module. The detection method comprisesthe steps that through measuring of parameters of gas mass accumulatively discharged out of or injected into the natural gas pipeline and pressure, temperature, pipeline inner diameter and the like ofthe pipeline, the pipeline length between the ice blockage point and the detection position can be calculated, and the ice blockage position of the natural gas pipeline can be determined.

Description

technical field [0001] The invention relates to the field of natural gas transmission pipelines, in particular to a device and method for detecting ice blockage positions of natural gas pipelines. Background technique [0002] Natural gas fields in Northwest my country will encounter ice blockage of natural gas production pipelines in winter. The freezing period here usually lasts for 4-5 months, the average temperature in winter is around -20°C, and the average thickness of the ground permafrost is 1.2-1.5 meters , The production pipelines of natural gas fields have been in the subzero field environment for a long time. Since the natural gas produced by natural gas wells will contain a small amount of water or water vapor, when the ground temperature is below zero for a long time in winter, some natural gas gathering and transportation pipelines in the field will be completely blocked due to the freezing of a small amount of water in the pipe, or due to low temperature The ...

AI Technical Summary

Problems solved by technology

[0010] The object of the present invention is to provide a device and method for detecting the ice blockage position of natural gas pipelines, so as to solve the positioning problem of ice blockage positions of natural gas pipelines. Provide new technical measures for ice blockage problem

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