Safe and efficient electromagnetic valve for natural gas pipeline

Abstract

The invention relates to the technical field of gas valves, and discloses a safe and efficient electromagnetic valve for a natural gas pipeline, the safe and efficient electromagnetic valve comprises a valve body, one end of the valve body is provided with a gas inlet, the other end of the valve body is provided with a gas outlet, the surface of the valve body is provided with a valve cover fixedly mounted through a bolt, and the inner wall of the valve cover is fixedly provided with a magnetism control mechanism. The electromagnetic block is mounted in the magnetic control mechanism and is connected with the detection device in parallel through rectification, so that the valve is opened through repulsive force generated by the electromagnetic block and the permanent magnet block during use, and the electromagnetic block stops working during power failure, so that the repulsive force of the electromagnetic block and the permanent magnet block is weakened; the valve can be closed by pushing the electromagnetic block to the permanent magnet block, so that it is guaranteed that a gas pipeline is cut off in the power failure process, the phenomenon that gas cannot be cut off due to the fact that the cut-off valve is powered off and does not work is avoided, use safety is guaranteed, and finally the purpose of automatically cutting off gas in the power failure process is achieved.

Description

technical field [0001] The invention relates to the technical field of gas valves, in particular to a solenoid valve for safe and efficient natural gas pipelines. Background technique [0002] The emergency shut-off valve in the solenoid valve for natural gas pipeline is a kind of valve equipment that controls the impact of the accident by cutting off the upstream gas when the gas is in emergency situations such as equipment failure and leakage. [0003] The working principle of the existing shut-off solenoid valve is: manually pull the driving rod to move up, so that the moving iron core is attracted by the permanent magnet, and at the same time, the spring is compressed by the valve core. The magnetic mechanism weakens the magnetism of the permanent magnet, so that the valve core is cut off from the gas flow through the spring. [0004] In the process of using the existing shut-off solenoid valve, it needs to work in an energized state. When the power is off, the leaked g...

AI Technical Summary

Problems solved by technology

[0008] The invention provides a safe and efficient solenoid valve for natural gas pipelines, which has the advantages of automatically cutting off the gas when the power is off, can always push the valve core, increases the sealing of the retaining ring and can improve the airtightness of the valve core, and solves the problems in the above-mentioned background technology. to the problem

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