Gas transportation station gas supply pipeline pressure stabilizing system and method thereof

Abstract

The invention discloses a gas transportation station gas supply pipeline pressure stabilizing system and a method thereof. The system is characterized in that a remote switch device is arranged, and aremote control electromagnetic valve, a PLC control cabinet and a control end are arranged in the remote switch device, wherein the remote control electromagnetic valve is arranged between a voltagestabilizer and an upstream pressure tapping pipeline of a monitoring pressure regulating valve PCV. According to the system and the method, pressure stabilizing on a gas supply pipeline is achieved bycontrolling opening and closing of the remote control electromagnetic valve, and the good sealing and pressure stabilization effects are achieved; the impact, caused by instantaneous gas supply in anexisting gas supply mode, on metering pressure regulation and other equipment can be effectively avoided, and meanwhile, the dependence, of gas supply and interruption, on manual auxiliary operationcan be completely avoided, and the good application effect and application prospect are achieved; and meanwhile, the remote switch device can utilize existing equipment, only the remote control electromagnetic valve and a matched pressure leading pipeline need to be additionally arranged, the transformation cost is low, the transformation mode is easy to achieve, and the good adaptability and application effect are achieved.

Description

technical field [0001] The invention relates to the technical field of natural gas supply systems, in particular to a system for stabilizing the pressure of a gas supply pipeline in a gas transmission station and a method thereof. Background technique [0002] At present, the conventional natural gas distribution station process system is composed of 5 relatively independent subsystems, including over-station, filtration and separation, metering, pressure regulation, and out-station. The subsystems are relatively independent and connected through manifolds or manifolds. . For a fixed user, the gas supply pipeline is usually provided with two branches, one for use and one for standby, each branch mainly includes two parts of metering and pressure regulation, and electric ball valves are usually installed from upstream to downstream (remote switch, not Control the opening), metering skid, pressure regulating skid (including emergency shut-off valve SSV, monitoring pressure re...

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Problems solved by technology

[0005] The embodiment of the present invention provides a system and method for stabilizing the pressure of gas supply pipelines in gas transmission stations. Through in-depth research and multiple tests on site working conditions, equipment structures and principles, an increase in the existing natural gas pipeline system The remote switch device solves the problems existing in the existing natural gas pipeline system. The instantaneous opening of the gas in the gas supply mode impacts the equipment such as metering and pressure regulation, causing damage to the equipment and the problem of not being able to completely get rid of the dependence of the gas stop on manual auxiliary operations.

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