Pressure relief device and housing comprising same

A technology of pressure relief device and housing, which is applied in substation/power distribution device housing, electrical equipment housing/cabinet/drawer, electrical components, etc. It can solve the problems of diaphragm removal, damage, diaphragm tearing, etc.
CN112703041APending Publication Date: 2021-04-23R STAHL SCHALTGERATE
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
R STAHL SCHALTGERATE
Publication Date
2021-04-23

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Abstract

A pressure relief device according to the invention comprises a gas-permeable body (17) to which a membrane adheres that is preferably impermeable to moisture. The membrane can be a rubber membrane that is formed e.g. by applying liquid rubber to the pressure relief body (17) and, optionally, a component which supports the liquid rubber and surrounds the pressure relief body (17).
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Description

technical field

[0001] The invention relates to a pressure relief device and a housing with such a pressure relief device. In particular, the invention relates to an explosion-proof enclosure of the "pressure-resistant encapsulation" type of protection, known as protection type ex-d. Background technique

[0002] Housings of the pressure-resistant encapsulation type often have so-called pressure relief devices, by means of which the excess pressure generated in the housing can be released to the outside. Such pressure relief devices typically have a porous body which, while gas permeable, prevents the breakdown of flames or hot particles due to the narrowness and length of the pores extending through the body.

[0003] A pressure relief device is known from DE 10 2010 016 782 A1 with such a porous body having a first side pointing toward the housing interior and a second side facing the surroundings. The pressure relief device also has a membrane which is arranged between ...

Claims

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