Fuel gas pipeline flow control device

Abstract

The invention discloses a fuel gas pipeline flow control device. The fuel gas pipeline flow control device comprises a valve body, a movable block and a connector, wherein the connector is communicated with the interior of the valve body; the outside diameter of a closed end of the movable block is smaller than that of an open end of the movable block; a sliding chute is formed in the inner wall of the middle part of the valve body; the open end of the movable block is arranged inside the sliding chute in a sliding manner; a flow passage is formed in an annular room between the closed end of the movable block and the sliding chute; a contact block is arranged on the end surface of the closed end of the movable block; a packing ring is arranged at an extended end of the connector; an annular groove matched with the packing ring and a protruding part is formed in the end surface of the contact block; a gas outlet hole communicated with the flow passage is formed in the movable block; and a spring is mounted between an annular bulge and the end part of the open end of the movable block. When gas flow is unstable, the movable block can achieve continuous adjustment under the support of the spring so as to ensure that a clearance between the connector and the contact block is matched with the flow rate of injected gas, so that automatic control over the injected gas is achieved.

Description

technical field [0001] The invention relates to a gas regulating device, in particular to a gas pipeline flow control device. Background technique [0002] Pipeline gas transmission station is a variety of operation stations established for pipeline transportation of natural gas or petroleum associated gas. According to the location of the compressed gas station along the pipeline, it is divided into a starting gas compressor station, an intermediate gas compressor station and a terminal gas charging station. The starting point compressor station is located near the gas gathering center or processing plant of the gas field, providing pressure energy for natural gas, and performing operations such as gas purification, gas mixing, pressure regulation, gas metering, and pig delivery. The intermediate compressor station is located along the transportation pipeline, mainly to pressurize the natural gas that consumes pressure energy during transportation. The terminal filling st...

AI Technical Summary

Problems solved by technology

[0003] The gas pipeline is the extension leg of the pipeline gas transmission station. During the natural gas transmission process, the gas flow in the pipeline is unstable, which will continuously scour the pipeline wall during the long-distance transmission. At the same time, when the injected gas volume is relatively small , the gas in the pipeline on the way of transmission will also appear back channeling and other imaginations, which will lead to the stagnation of gas transmission

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