Fireproof alarm structure for transformer substation cable trench

Abstract

The invention discloses a fireproof alarm structure for a transformer substation cable trench. The fireproof alarm structure comprises a trench body fixedly connected to the ground, a cover plate is fixedly connected to the upper end of the trench body, a plurality of mounting plates are fixedly connected to the inner wall of the trench body, a fixing cylinder is fixedly connected to the bottom inthe trench body, and an annular groove is formed in the upper end of the fixing cylinder. A circular ring is slidably connected to the inner wall of the annular groove in a sealed mode, a rotating cylinder is fixedly connected to the upper end of the circular ring, a heat absorption cavity is formed in the lower end of the trench body, and a sealing plate is fixedly connected to the inner wall ofthe fixing cylinder. Through rotation of an impeller, the impeller made of a magnetic material continuously skims over the position under a magnetic ball, the magnetic ball moves up and down, a hydrochloric acid solution in a liquid storage tank intermittently flows out, the hydrochloric acid solution reacts with calcium carbonate powder to generate carbon dioxide, and then the carbon dioxide issprayed out through an arc-shaped gas spraying pipeline, so that the concentration of carbon dioxide in the trench body is increased to extinguish fire in the trench body.

Description

technical field [0001] The invention relates to the technical field of cable trenches, in particular to a fire alarm structure for substation cable trenches. Background technique [0002] Substation refers to the place where the voltage and current are transformed, received and distributed in the power system. Therefore, there are a large number of cable trenches in the substation to ensure the safety and orderly arrangement of cables. [0003] Due to the complex environment of the cable trench, the surface insulation layer of the cable is easy to age after long-term use, and the presence of moisture in the cable trench will cause a short circuit at the joint, causing the temperature in the cable trench to rise rapidly, which in turn leads to cable failure. A fire safety accident occurs in the trench. The current cable trench is only equipped with a fire prevention function inside it, and there is no automatic fire extinguishing function. When a fire occurs, due to the compl...

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Problems solved by technology

[0003] Due to the complex environment in which the cable trench is located, the surface insulation layer of the cable is prone to aging after long-term use, and the presence of moisture in the cable trench will cause a short circuit at the joint, which will cause the temperature in the cable trench to rise rapidly, which will lead to cable failure. A fire safety accident occurs in the trench. The current cable trench is only equipped with a fire prevention function inside it, and there is no automatic fire extinguishing function. When a fire occurs, due to the complexity of the wiring in the substation, the fire is easy to spread, which will cause huge economic losses. , affecting the normal use of the substation

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