Explosion-proof socket

Abstract

The invention relates to an explosion-proof socket which is applied to electricity supply for electric appliances in places where combustion and explosion happen easily. The explosion-proof socket is characterized in that at least one set of socket contacts are connected with one end of a reed pipe, the other end of the reed pipe is connected with a power input line, an insulation guide line winding which can produce a magnetic field is arranged on the periphery of the reed pipe, on-off of a current of the insulation guide line winding is controlled through an electronic switch, and the electronic switch is controlled by a photosensitive device; a light source irradiates the photosensitive device when no plug is plugged into the socket, the photosensitive device controls the electronic switch to cut off the current of the insulation guide line winding, and the reed pipe is located in a cut-off state; when being plugged into the socket, the plug blocks the light source from irradiating the photosensitive device, the photosensitive device controls the electronic switch to connect the current of the insulation guide line winding, and the reed pipe is located in a connected state. The explosion-proof socket has the advantages that when the plug is plugged in or pulled out of the socket, the plug is in an outage state when being electrically connected or disconnected with the contacts, and therefore electric sparks are avoided and then the effect of intrinsic safety explosion prevention is achieved.

Description

technical field [0001] The invention relates to an explosion-proof socket, which is used for electric appliances in inflammable and explosive places. [0002] Background technique [0003] The moment the electrical plug is inserted into the traditional socket, due to the existence of a large contact resistance, sparks and heat will be generated at the contact point. With the stable contact between the plug and the socket contacts, the sparks and heat will disappear. When the electrical plug is pulled out When the socket is out, often due to the existence of the load, sparks will also be generated at the moment when the contacts are separated, so the sparks and heat of the power contacts in flammable and explosive places can easily cause explosion accidents. At present, explosion-proof methods are divided into isolation explosion-proof and intrinsically safe explosion-proof. Isolation-proof explosion-proof is to use a metal container to seal and isolate electric sparks. Intr...

AI Technical Summary

Problems solved by technology

[0003] The moment the electrical plug is inserted into the traditional socket, due to the existence of a large contact resistance, sparks and heat will be generated at the contact point. With the stable contact between the plug and the socket contacts, the sparks and heat will disappear. When the electrical plug is pulled out When the socket is out, often due to the existence of the load, sparks will be generated at the moment when the contacts are separated, so the sparks and heat of the power contacts in flammable and explosive places can easily cause explosion accidents

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