A pipe network explosion-proof device for main transformer explosion fire extinguishing system

Abstract

An explosion-proof device for the pipe network of the main transformer explosion fire extinguishing system, including two structures: the pipe network explosion-proof device for the side casing explosion fire extinguishing system and the pipe network explosion-proof device for the top casing explosion fire extinguishing system; wherein: the side casing explosion fire extinguishing system pipe network explosion-proof device The structure of the device is composed of a long column (A1), an explosion-proof beam (A2), an explosion-proof support (A3) and an explosion-proof steel mesh (A4). The pipe network explosion-proof device structure of the top casing explosion fire extinguishing system consists of a long column (B1), an explosion-proof beam (B2) fixed on the long column (B1), and an explosion-proof support (B3) arranged between the explosion-proof beams (B2). The beneficial effect of the present invention is that: the explosion-proof device is an essential protection facility for the pipe network of the transformer fire extinguishing system due to serious explosion, and can protect the transformer fire extinguishing system pipe network from the impact of the transformer explosion to the greatest extent, and prevent the transformer bushing, lifting seat and Explosive parts such as flanges will cause damage to the pipe network of the fire extinguishing system, electrical equipment and even personnel in the direction of the explosion.

Description

technical field [0001] The invention belongs to substation fire-fighting facilities, and in particular relates to a technology for arranging an explosion-proof device for a pipe network of a main transformer oil explosion fire extinguishing system. Background technique [0002] For a long time, the fire protection design of the main transformer of the core equipment of the substation has mainly focused on the plane layout of each main transformer and the installation of a firewall to meet the fire protection distance requirements stipulated in the fire code. Drain the transformer oil in case of fire, and at the same time, install water spray, foam spray, dry powder, nitrogen injection and other fire extinguishing systems outside the transformer body to extinguish the fire. [0003] At 2:58 on October 4, 1978, a serious fire and explosion accident occurred in the No. 5 120,000 kVA transformer of a power plant in Zhenjiang, Jiangsu Province. A large amount of transformer oil w...

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Problems solved by technology

The transformer caught fire at 1:22 am on the 22nd. The fire brigade arrived at the substation fire scene at 2:25. At 5 o'clock in the morning, all the fires were extinguished. Afterwards, the transformer oil was basically burned out. After the fire brigade used fire truck water to extinguish the fire, a small amount of transformer oil was discharged outside the station through the road and site drainage system. pollute the surrounding environment

[0004] It can be seen from the above fire cases that when a moderate explosion fire occurs in the transformer, the transformer bushing and bushing riser only explode and spray oil. Destruction of the fire system pipe network will cause the fire extinguishing system to fail. Therefore, in order to ensure the normal use of the transformer fire extinguishing system, it is necessary to set up a complete explosion-proof device for the transformer explosion fire extinguishing system pipe network.

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