Flameproof and intrinsically safe roadway lights

Abstract

An explosive-proof and intrinsically safe roadway lamp relates to the technical field of mining lamps. The technical problems to be solved are to reduce the cost and improve explosive-proof performance. The roadway lamp comprises a lamp shell, a lighting lamp installed in an intrinsic safety cavity of the lamp shell, and an explosive-proof cavity body fixed on the lamp shell, wherein the explosive-proof cavity body is a cylindrical cavity body with an open right end and a sealed left end, and a detachable plastic explosive-proof cover is fixed at the right end; the explosive-proof cavity body has three structural layers which are respectively a plastic outer layer, a metal middle layer and a plastic inner layer sequentially from outside to inside; adjacent layers are stuck mutually, and the right edge of each structural layer is retracted leftwards along the right edge of the external adjacent structural layer per se; the explosive-proof cover covers the opening at the right end of the explosive-proof cavity body; the explosive-proof cover is fixedly provided with a metal ring; the outer ring surface of the metal ring is tightly stuck with the inner wall surface of the metal middle layer of the explosive-proof cavity body. The roadway lamp provided in the invention can be used safely in an environment with flammable and explosive gases.

Description

technical field [0001] The invention relates to the technology of mining lamps, in particular to a technology of an explosion-proof and intrinsically safe roadway lamp. Background technique [0002] Mine roadway lights are lighting equipment installed in mine roadways. Since there will be flammable gases in most mines, mine roadway lights need to have explosion-proof performance to separate the internal lighting circuit from the external environment to prevent its internal Sparks from lighting circuits ignite flammable gases in the external environment. [0003] In order to achieve the explosion-proof performance of existing mining roadway lights, intrinsically safe lighting (also known as intrinsically safe circuits, used to control the work of lighting lamps) are installed in closed chambers, and the closed chambers with lighting circuits are explosion-proof The cavity, in order to ensure that the micro-explosion caused by the ignition of the electric spark generated by t...

AI Technical Summary

Problems solved by technology

[0003] In order to achieve the explosion-proof performance of existing mining roadway lights, intrinsically safe lighting (also known as intrinsically safe circuits, used to control the work of lighting lamps) are installed in closed chambers, and the closed chambers with lighting circuits are explosion-proof The cavity, in order to ensure that the micro-explosion caused by the ignition of the electric spark generated by the lighting circuit and the flammable gas mixed into the flame-proof cavity is separated from the external environment of the flame-proof cavity, and it can withstand the impact generated by the micro-explosion , the flame-proof cavity of the existing mining roadway lights is made of aluminum alloy casting, and surface treatment is required, the production cost is high, and the pure metal flame-proof cavity will cause strength and sealing performance due to loose metallographic structure Reduced, its flameproof performance is also poor

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