Pressure relief electromagnetic valve for toxic gas pipeline

Abstract

The invention discloses a pressure relief electromagnetic valve for a toxic gas pipeline. The pressure relief electromagnetic valve comprises a valve seat, a first chamber, a first channel, a second channel, a second chamber, an electromagnetic valve body, a piston, a limiting mechanism and an adjusting rod. Pressure relief can be completed through a switch valve core, when the pressure is increased, the electromagnetic valve body can be opened to move the adjusting rod, and therefore, the pressure of the first chamber is changed to complete pressure relief; the switch valve element is a one-way valve and can prevent gas from flowing back; and the piston is in sealing fit with the second chamber, so that the gas can be prevented from leaking and corroding a pressure relief mechanism. The pressure relief electromagnetic valve 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 titled "a dual-purpose angle valve" is disclosed. This patent 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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