Closed type depressurization capacitor

Abstract

The invention discloses a closed pressure relief capacitor, which comprises a capacitor core group, a capacitor shell, a capacitor shell cover, a lead-out terminal, a guide wire, and a pressure relief valve. The inside of the capacitor shell is provided with a horizontal sealing wall and a vertical sealing wall. The horizontal sealing wall and the vertical sealing wall divide the interior of the capacitor case into three parts: the mouth, the core group, and the pressure relief compartment. The capacitor case cover is fastened to the mouth, and the lead-out terminals Located on the capacitor case cover, the lead-out terminal is electrically connected to the capacitor core group through the guide wire, the capacitor core group is located at the core group part, and the capacitor case is provided with a chute to communicate with the The core unit, the pressure relief chamber and the outside atmosphere, the pressure relief valve is arranged in the chute and sealingly fits with the chute. It avoids the accident that the internal pressure of the capacitor is too high to cause the shell to rupture, and avoids the discharge of some toxic capacitor filling gas directly into the atmosphere.

Description

technical field [0001] The invention relates to the technical field of capacitors, in particular to a closed pressure relief capacitor. Background technique [0002] In order to improve the electrical performance of the capacitor, some gases with good dielectric properties but poisonous to the human body are usually selected as the internal filling gas of the capacitor to improve the insulation performance between the internal components of the capacitor and prevent the internal components of the capacitor from being oxidized. However, when capacitors are used in different environments, different altitudes, or even in different seasons and different times in the same area, there are large fluctuations in the change of external air pressure. When the internal pressure of the capacitor is greater than the external atmospheric pressure, the capacitor may have an accident of shell rupture. Thus there is a security risk. The traditional capacitor pressure relief valve discharges...

AI Technical Summary

Problems solved by technology

However, when capacitors are used in different environments, different altitudes, or even in different seasons and different times in the same area, there are large fluctuations in the change of external air pressure. When the internal pressure of the capacitor is greater than the external atmospheric pressure, the capacitor may have an accident of shell rupture. resulting in safety hazards

The traditional capacitor pressure relief valve discharges the filling gas of the capacitor directly into the atmosphere, but for some gases that are toxic to the human body, it is obviously not suitable to be directly discharged into the atmosphere

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