Double two-way stop air-operated cylinder valve

Abstract

The invention provides a double two-way stop air-operated cylinder valve, which is mainly technically characterized by having a horizontal symmetry structure, adopting a double and two-way stop air operated mode, being directly mounted at openings of cylinders, and mainly comprising cylinder bodies, pistons, push rods, valve seat covers, bearing screw seats, springs, valve cores, valve seats, a conical seal rings, a body, glands and the like, wherein the body is provided with two independent chambers, namely a left chamber and a right chamber in the horizontal direction; the upper end of the body is provided with a quick connect oil connector and a quick connect air connector, and the lower end of the body is provided with two independent channels, namely a left channel and a right channel to switch on and switch off the control air introduced through air source connectors of the cylinder bodies on the left and right sides; and the valve cores are pushed to move through the pistons and the push rods, so that the valve is bidirectionally opened and closed. The double two-way stop air-operated cylinder valve has the advantages of compact structure, high reliability and safety, low cost, convenience for detection and maintenance and the like.

Description

technical field [0001] The invention relates to a double-connected two-way cut-off gas control cylinder valve, which is especially suitable for filling cluster gas cylinders or discharging compressed natural gas in a storage, transportation and distribution system of a hydraulic gas filling substation. Background technique [0002] The storage / distribution system of the hydraulic refueling substation needs to pass through a dedicated oil and gas pipeline when filling or discharging compressed natural gas (CNG) cluster gas cylinders. In the background technology, Patent Publication No. CN1486409A discloses a method of controlling the inflow and outflow of compressed natural gas (CNG) oil and gas. Steel cylinders are installed vertically. Each steel cylinder has a mouth at one end and a closed end at the other end. The bottle mouth is equipped with a joint, which contains a hydraulic fluid valve and an air valve, and the hydraulic fluid valve and the air valve are installed on...

AI Technical Summary

Problems solved by technology

The common shortcomings of the above two methods are: 1) There are many gas nodes, and the safety factor is low; 2) The hydraulic fluid valve and air valve (or control valve) are all installed on the pipeline outside the steel cylinder, and cannot directly close the cylinder. Gas, once the connection between the cylinder and the valve is loosened or broken during transportation, the gas in the cylinder will be uncontrollable, which will easily cause accidents and waste

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