Anti-explosion foam spray fire extinguishing system

Abstract

The invention discloses an anti-explosion foam spray fire extinguishing system. The system comprises a fire pump set, a liquid storage tank, a foam proportional mixer, a liquid supply pipe network, horizontal pipelines, pressure telescopic pipes and water mist nozzles. By adopting a telescopic hidden arrangement mode, the reliability of the fire extinguishing system is remarkably improved. By adopting a multi-stage sealing structure, the pressure telescopic pipes solve the problems of easiness in liquid leakage, misoperation, immobility, small applicable pressure range and the like. The multi-section pressure telescopic pipes are adopted, the water mist nozzles can spray water mist close to a fire object, and the problems that an existing water mist nozzle is short in range, insufficient in penetrating force and prone to being influenced by environment wind and fire plume are solved. The fire extinguishing system disclosed by the invention has explosion-proof, dustproof and high-temperature-resistant functions, is safe, reliable, high in fire extinguishing efficiency, long in spraying time, convenient to install and use, small in influence on a protected object, and suitable for extinguishing a fire of a charged oil-immersed transformer; and the technical problem of fire extinguishing of a large oil-immersed transformer is effectively solved, and the system can be used for transporting the oil-immersed transformer and also newly building the oil-immersed transformer.

Description

technical field [0001] The invention relates to a fixed fire extinguishing system, in particular to an anti-explosion foam spray fire extinguishing system. Background technique [0002] In recent years, with the rapid development of my country's social economy and the upgrading of power transmission and distribution technology, a number of large oil-immersed transformers have emerged. However, due to the high voltage level, large energy, large oil storage capacity, and high operating temperature of large oil-immersed transformers, the risk of explosion and fire is high, the damage is great, and it is difficult to fight. Once a fire occurs, it will cause major economic and property losses and seriously threaten stable operation of the grid. Therefore, effective fire protection measures should be taken for large oil-immersed transformers. [0003] The fixed fire extinguishing system is one of the most effective means to extinguish the initial fire in time and minimize the fi...

AI Technical Summary

Problems solved by technology

Because fire extinguishing systems such as water spray and foam spray rely on the end nozzle to form an effective spray for fire extinguishing, when the nozzle is blown up or blown up, it will not be able to form an effective spray, so it will directly fail

Moreover, the closer the nozzle is to the explosion point, the easier it is to be blown up, resulting in the inability to form an effective spray for fire extinguishing in the fire area around the explosion point that most needs to be extinguished.

[0005] (2) After some nozzles are damaged, a large amount of fire-fighting water or foam mixture will be wasted, which will seriously affect the spray effect of other remaining nozzles

Since the internal flow diameter of water mist nozzles and foam spray nozzles is much smaller than the inner diameter of the inlet, when some nozzles are damaged, the branch pipes connected to them will become discharge ports or pressure relief ports, causing a large amount of fire water or foam solution to flow out from there. The entire fixed fire extinguishing system loses pressure, and the remaining undamaged nozzles cannot reach the design pressure and form an effective spray, which leads to the failure of the entire fixed fire extinguishing system

[0006] (3) The high temperature of the fire will lead to the deformation of the fire branch pipe, which will cause the system to fail to completely envelop the protected object and seriously affect the fire extinguishing effect

[0007] It can be seen that the existing fixed fire extinguishing system of large oil-immersed transformers is easily affected by explosion and fire high temperature, which cannot meet its fire fighting needs, and there are great fire safety hazards. Effective fixed fire extinguishing measures are urgently needed

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