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High-precision quick response pilot valve

A fast-response, high-precision technology, applied in safety valves, balance valves, valve devices, etc., can solve the problem of not meeting the requirements of use, and achieve the effect of improving the working conditions of throttling and variable damping, easy production, and high applicable pressure.

Inactive Publication Date: 2010-05-19
LESHAN CHUANTIAN GAS EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be said that the current indirect acting pressure regulator products cannot meet the requirements of use

Method used

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Embodiment Construction

[0021]A high-precision quick-response pilot valve, which is mainly composed of a valve body 27, a pressure-regulating valve port 23, a pressure-regulating diaphragm assembly 19, a pressure-regulating valve cover 12, a pressure-regulating spring 16, a pressure-regulating spring seat 18, and a pressure-regulating screw rod 17 , a damping valve port 29, a damping diaphragm assembly 32, a damping valve cover 31, a damping spring 3, a damping spring seat 2, and a damping screw 1. The valve body 27 is provided with a valve cavity 9 communicating with the front pressure airflow introduction interface 37, The pressure regulating air passage 26 communicated with the pressure regulating sensing interface 24, the spring 22 assembled in the valve chamber 9, the pressure regulating valve core 20 and the pressure regulating valve port 23 constitute the front pressure regulating orifice 14, the said pressure regulating The valve core 20 is fixedly connected to the connecting screw 15 of the p...

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Abstract

The invention discloses a high-precision quick response pilot valve which comprises a valve body, a pressure regulating valve port, a pressure regulating diaphragm assembly, and a damping diaphragm assembly. In the invention, the valve body is internally provided with a diversion passageway formed consisting of a valve cavity and a pressure regulating air passage, wherein the valve cavity is communicated with a forward press air flow importing interface, and the pressure regulating air passage is communicated with a pressure regulating inductive interface; a pressure regulating valve core and a damping valve core can displace with the pressure fluctuation of a main pipeline to form a damping variable type pressure regulating structure; and the damping variable type pressure regulating structure can quickly collect the pressure fluctuation inside a main inductive gas transmission pipeline and timely transmit a pressure regulating signal to a pressure regulator, which has remarkable effect on improving pressure regulating speed and pressure regulating precision. The high precision quick response pilot valve is especially suitable for matching to be installed with an indirect type pressure regulator for using, and can be widely applied to the gas transmission pipelines with mass medium-high pressure flux and large transient variation range for pressure regulating operation and pressure stabilizing operation. The invention has the advantages of quick pressure regulating response speed, high pressure regulating precision, good pressure regulating stability, and excellent market application prospect.

Description

Technical field: [0001] The invention relates to a valve device, in particular to a pilot valve. It is matched with the indirect acting pressure regulator to quickly regulate and stabilize the pressure of the gas transmission and distribution pipeline. Background technique: [0002] We know that the key to ensure the safe and normal operation of the gas transmission and distribution pipeline system (such as: natural gas, coal gas, liquefied petroleum gas, gas, CNG, etc.) is to be able to quickly and timely regulate the pressure of the gas being transported to keep it stable. However, in the actual operation of the gas transmission and distribution pipeline system, it is not only affected by the instantaneous fluctuation of the gas source pressure caused by the change of the upstream ambient climate temperature, but also affected by uncertain factors such as the random increase and decrease of the gas consumption of the downstream users. The interlacing action of many uncert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/02
Inventor 袁勇兰建强何文清张祖裕
Owner LESHAN CHUANTIAN GAS EQUIP
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