A Pressure Relief Solenoid Valve for Toxic Gas Pipeline

Abstract

The invention discloses a pressure relief solenoid valve for toxic gas pipelines, which comprises a valve seat, a first chamber, a first passage, a second passage, a second chamber, a solenoid valve, a piston, a limit mechanism, an adjustment Rod, the present invention can complete the pressure relief by switching the spool, when the pressure increases, the solenoid valve can be opened to move the adjusting rod, thereby changing the pressure in the first chamber to complete the pressure relief; the switch spool of the present invention is a one-way The valve can prevent gas backflow; the piston and the second chamber are sealed and matched to prevent gas leakage and corrosion of the pressure relief mechanism. The invention has the advantages of reasonable design, simple structure, convenient operation and the like.

Description

technical field [0001] The invention relates to the field of solenoid valves, in particular to a pressure relief solenoid valve used for toxic gas pipelines. Background technique [0002] Solenoid valve is an industrial equipment controlled by electromagnetic. It is an automatic basic component used to control fluid. It belongs to actuator and is not limited to hydraulic and pneumatic. It is used to adjust the direction, flow, speed and other parameters of the medium in the industrial control system. Solenoid valves can cooperate with different circuits to achieve the expected control, and the control accuracy and flexibility can be guaranteed. However, the solenoid valve usually only has two states of switch, the valve core can only be in two limit positions, and it cannot be adjusted continuously, so the adjustment accuracy is still limited. In addition, in the case of unstable fluid pressure, the solenoid valve cannot perform appropriate control, which will damage the s...

AI Technical Summary

Problems solved by technology

However, the solenoid valve usually only has two states of switch, the valve core can only be in two extreme positions, and cannot be adjusted continuously, so the adjustment accuracy is still limited.

In addition, in the face of some fluid pressure instability, the solenoid valve cannot make appropriate control, which will damage the service life of the pipeline.

[0003] In CN 211624383U, a patent named "a dual-purpose angle valve" is disclosed, which is provided with a water inlet joint, a water outlet joint and a pressure relief chamber. The disadvantages are: 1. The pressure relief in the pressure relief chamber The mechanism is of mechanical structure and cannot be adjusted according to the pressure in the pipeline; 2. The fluid will corrode the pressure relief mechanism

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