Pressure relief valve

Abstract

The invention discloses a pressure relief valve. The pressure relief valve comprises a valve seat and a valve shell with the two open ends. One open end of the valve shell is installed on the valve seat, a cover is arranged on the top of the part, inside the valve shell, of the valve seat, a sign post is fixed to the center of the cover, and the other end of the sign post is a free end and extends out of the other open end of the valve shell. A spring base is installed on the sign post in a sleeving mode, a pressure sensor is arranged at the top of the spring base and is used for emitting continuous digital signals and transmitting the digital signals to the background, and the pressure sensor and the spring base are prevented from moving axially along the sign post through a pressure regulation plate connected to the inner wall of the valve shell. Springs are installed at the part, between the spring base and the cover, of the sign post in a sleeving mode and are compressed. According to the pressure relief valve, the pressure sensor arranged at the tops of the springs can monitor the pressure values of the springs inside the pressure relief valve in real time, emit the continuous digital signals of the pressure values and transmit the digital signals to the background for monitoring, and therefore the reliability and the accuracy of the action of the pressure relief valve can be guaranteed.

Description

Technical field: [0001] The invention relates to a pressure release valve, which is used for electrical equipment such as oil-immersed transformers to release the internal overpressure of the transformer oil tank. Background technique: [0002] With the development of smart grid, the requirements for the operation of transformers and components are getting higher and higher, so no faults, intelligently controlled transformer components are the future research and development direction, pressure relief valve is an important protection device for transformers, research and development of intelligent The pressure relief valve is of great significance. The existing pressure relief valve only knows that the pressure value of the transformer oil tank exceeds the standard when it operates. The application number: 201020286712.1 The pressure relief valve belongs to the transformer component. It includes valve seat, pressure transmitter or pressure sensor, electrical components and ...

AI Technical Summary

Problems solved by technology

It includes valve seat, pressure transmitter or pressure sensor, electrical components and circuit board, spring, electrical box, spring pressure plate, sign rod, etc.; Or convert the internal pressure value of the transformer into an electronic analog quantity through electrical components and circuit boards; the pressure sensor outputs the pressure value of a certain part on the pressure relief valve base, which can only measure the oil pressure, but not the pressure relief valve. The working status and its effectiveness are verified and detected in real time

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