Underpressure before the valve automatically shuts down the pressure regulator

Abstract

The invention discloses an upstream under-pressure automatic closing pressure regulator, which mainly consists of a main valve, a director and an under-pressure closing controller, wherein the main valve is installed for ordinary users. The upstream under-pressure automatic closing pressure regulator is structurally characterized in that the under-pressure closing controller is assembled at the front end of the director of the existing pressure regulator, a voltage regulating signal air source can be subjected to automatic starting and stopping control operation, when the pipe network pressure is higher than the set under-pressure value, the director can obtain the pressure regulation air source to carry out pressure regulation operation on the main valve, when the pipe network pressure is lower than the set under-pressure value, the pressure regulation signal air source can be automatically cut off to close the main valve, the air source can be regulated and allocated in a centralized way, and the gas supply operation can be realized on important users. The upstream under-pressure automatic closing pressure regulator has the obvious advantages that the structure is simple, the production cost is low, the installation and the use are convenient, the automatic management degree is high, the operation is safe and reliable, and the work life is long. The obvious technical effects are realized on improving the management and control level of pressure regulation, pressure stabilization and gas supply regulation and allocation of a gas conveying pipeline by urban fuel gas companies, and the upstream under-pressure automatic closing pressure regulator has very good application prospects in gas conveying industry.

Description

technical field [0001] The invention relates to a pressure regulating device for a gas transmission pipeline network, in particular to an under-pressure automatic closing pressure regulator in front of a valve, which belongs to the technical field of pressure regulation and deployment of gas transmission, and is especially suitable for natural gas, liquefied petroleum gas, gas, The installation and use on gas transmission pipelines such as coal gas and CNG pressure regulating stations has a very obvious technical effect on improving the gas company's management level of "regulating and stabilizing pressure, and deploying gas supply" on the gas transmission pipeline network. Background technique [0002] In recent years, with the rapid development of my country's national economy, the process of urbanization has been greatly promoted. Under the background of the current urban scale expansion and the rapid increase of the resident population, many cities have limited the use of...

AI Technical Summary

Problems solved by technology

Undoubtedly, this kind of operation method relying on manual closing or opening and reset is primitive and backward, and there are pipeline workers who have long journeys to go out, high labor intensity to operate valves, long working hours, low emergency response time for opening and closing operations, labor and time-consuming and high operation and management costs. Defects

Tracing it to its cause is mainly that the structural design of the current regulator is not yet scientific and reasonable, and the function of use is too single. This is a technical problem that has been perplexing the gas company for a long time and is eager to be solved. The present invention just wants to solve this problem. question

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