Antiseize fuel gas control valve for waste mine gas use unit

Abstract

An antiseize fuel gas control valve for a waste mine gas use unit comprises a fuel gas control valve body, a bearing block hole, a valve rod and a bearing cap, wherein the bearing valve body is provided with a bearing block hole, and a bearing is mounted in the bearing block hole. The valve rod is nested in the bearing hole and is located on two sides of the valve body. A fuel gas valve plate and a clamping groove of an electrical contact of a contact motor outside the valve rod are fixed to be connected, and the opening and closing of the valve plate for 0-90 degrees is realized by a control system module. The bearing cap is mounted outside the bearing block, lubricating grease can be added, it is ensured that the valve rod rotates flexibly without seizing, corrosion and dust entering are prevented, regular maintenance is convenient, burning loss of an electrical control module and a motor is prevented, the service life is prolonged, and operation and maintenance costs are reduced.

Description

technical field [0001] The invention belongs to the field of low-concentration coalbed gas pipeline transportation equipment, and in particular relates to an anti-jamming gas control valve of an abandoned mine gas utilization unit. Background technique [0002] In low-concentration abandoned mines and coalbed methane (gas) pipeline transportation systems, gas intake control valves are generally used to control the intake volume of gas generating units. Existing control valves adopt pneumatic control valves and electric control valves. The installation of the gas intake control valve is mainly located between the 500KW gas generator set and the gas secondary intake valve. The control valve is mainly composed of 24V DC motor, valve body, valve plate, valve stem rotation shaft, etc. The valve plate is fixed by the valve stem, and the two ends of the valve stem are fixed in the shaft holes on both sides of the valve body, controlled by the electric control module. The valve st...

AI Technical Summary

Problems solved by technology

Due to the large amount of water and coal powder in the coalbed methane, and the water in the gas is mostly weakly acidic, it has a strong corrosion effect on the main parts of the gas control valve. After a period of operation of the gas generating set, the gas control valve stem and The valve plate is corroded or blocked by dust, causing the electric control system to fail, causing the unit to overspeed, and seriously causing damage to the control module or motor

Thereby increasing equipment operating costs and equipment safety hazards

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