Explosion-proof compact pressure switch and use method thereof

Abstract

The invention discloses an explosion-proof compact pressure switch and a use method thereof. The explosion-proof compact pressure switch is characterized by comprising a shell, an electrical connectorand a process connector. The shell is a cuboid with a cylindrical cavity inside. The left end of the shell is connected to the process connector. The right side of the process connector is provided with a piston column inside the shell. The outer side of the piston column is sleeved by a shaft sleeve. The right side of the piston column is provided with an ejecting rod. The outer side of the ejecting rod is sleeved by a gasket and a spring. The right end of the shell is plugged into the electrical connector and positioned on the right side of the spring. A rivet cover is arranged on the rightside of the electrical connector and fixedly connected with the shell through the rivet. A switching element is arranged in the electrical connector. The switching element is connected with a lead tobe led out of the right end of the electrical connector. The piston column pushes the ejecting rod to move horizontally in the shell under the effect of pressure and compresses and releases the spring. When the pressure on the piston column reaches the switching threshold value, the ejecting rod is pushed to compress the spring to the right and close the switching element. The explosion-proof compact pressure switch is suitable for the hydraulic or pneumatic system with the flameproof requirement and has the advantages of compact and reasonable structure and safe and reliable use.

Description

technical field [0001] The invention relates to the field of industrial switches, in particular to an explosion-proof compact pressure switch and its application method. Background technique [0002] Pressure switches are widely used in petroleum, chemical industry, metallurgy, electric power, water supply and other fields. They can output alarm or control signals according to the pressure parameter changes of gases or liquids, and have important uses in the industrial field. For electrical equipment used in explosive gas atmospheres, there are usually hydraulic and pneumatic systems. Since ordinary pressure switches do not have flameproof enclosures, explosive gases will explode when they encounter electric sparks. If the explosion is transmitted to the entire explosive gas environment, it will Serious safety accidents are caused. Therefore, it is necessary to design a pressure switch that can monitor the pressure in the system and has an explosion-proof function. The pres...

AI Technical Summary

Problems solved by technology

For electrical equipment used in explosive gas atmospheres, there are usually hydraulic and pneumatic systems. Since ordinary pressure switches do not have flameproof enclosures, explosive gases will explode when they encounter electric sparks. If the explosion is transmitted to the entire explosive gas environment, it will Cause serious safety accidents, therefore, it is necessary to design a pressure switch that can monitor the pressure in the system and has an explosion-proof function

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