Gas pressure regulator achieving direct action through spring load

Abstract

The invention discloses a gas pressure regulator achieving direct action through a spring load. The gas pressure regulator is characterized in that the gas pressure regulator comprises a valve body, a valve element assembly, a block valve assembly and an actuator; the block valve assembly is internally provided with a releasing part, a sensing part and a block valve rod; the actuator is internally provided with thin film, and a sensing cavity is formed below the thin film; the sensing cavity and a gas pressure detecting port corresponding to the actuator are each provided with a pipe joint which is in butt joint with a signal pipe; each pipe joint is provided with a step internal interface of which the exterior is shaped like a horn and an outer end, and a seal assembly A and a seal assembly B are arranged between the signal pipe and each pipe joint which is in butt join with the signal pipe. According to the gas pressure regulator achieving direct action through the spring load, the pressure regulating performance is stale, integration of overpressure and pressure loss can be achieved, and the safety and the reliability are higher; meanwhile, the problem that an existing signal pipe is partially connected with the sensor directly is solved, the signal pipe is firmly and tightly connected with the pipe joints, even though the signal pipe is used for a long time, the disengagement phenomena such as cracking cannot occur on the joint parts of the signal pipe, the situation of unstable joint parts cannot occur either, and the sealing property of the gas pressure is guaranteed.

Description

technical field [0001] The invention relates to the field of gas pressure regulation, in particular to a spring-loaded direct-acting gas pressure regulator. Background technique [0002] With the change of my country's energy structure and the continuous increase of environmental protection, the development and utilization of natural gas have developed rapidly. Compressed natural gas is purified and compressed wellhead natural gas or pipeline natural gas, which is stored and transported under high pressure, reaches the point of use, and is directly input into the pipeline network to supply various users after multi-stage heat exchange and pressure regulation. City gas generally needs to be regulated by a pressure regulating device before it can be finally used by the user. The gas pressure regulating device is generally composed of several functional modules, such as the pressure regulator to realize the pressure regulation function; the filter to realize the cleaning and fi...

AI Technical Summary

Problems solved by technology

The existing pressure regulator signal tube is directly connected to the sensor part. After a period of use, the connection part is prone to cracks and easy to fall off; due to the instability of the connection part, it is easy to cause poor air pressure sealing and affect the detection effect of the sensor. It affects the performance and service life of the cut-off valve; at the same time, it is not conducive to the work of the entire pressure regulating system; so it needs to be improved

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