Fire extinguishing method and system for a wind turbine cabin

Abstract

The present invention provides a wind power cabin fire extinguishing system, which comprises a control host machine and a NOVEC1230 gas fire extinguishing system, and further comprises a control cabinet fire detection and extinguishing system, wherein the control host machine is connected with the NOVEC1230 gas fire extinguishing system and the control cabinet fire detection and extinguishing system, the NOVEC1230 gas fire extinguishing system is provided for protecting the whole wind power cabin space excluding the control cabinet, and activating a fire extinguishing action through the control host machine, the control cabinet fire detection and extinguishing system is provided for protecting the sealed space inside the cabin control cabinet to independently achieve a fire detection and extinguishing process, and the control host machine can be provided for activating the cabin NOVEC1230 fire extinguishing system, and can concurrently monitor and display states of the two fire extinguishing systems. The invention further provides a corresponding method. According to the invention, targeting fire extinguishing protection measures are respectively performed on the two relatively independent spaces inside the wind power cabin so as to substantially enhance a protection function of the wind power cabin fire extinguishing system; and the whole fire extinguishing system adopts a NOVEC1230 cleaning fire extinguishing agent so as to provide characteristics of no toxicity and environmental protection.

Description

technical field [0001] The invention relates to a fire extinguishing system, in particular to a wind power generator fire extinguishing system, which belongs to the technical field of wind power generator safety. Background technique [0002] In the modern wind turbine cabin, generators, control cabinets, switch cabinets, frequency conversion cabinets, gearboxes, hydraulic systems, braking systems, etc. are placed. Various electrical equipment and combustible materials are densely placed in the cabin, and the risk of fire is high. In the event of a fire accident, the flame spreads rapidly, causing serious damage to the wind turbine or other important components, and even the entire wind turbine, resulting in major economic losses. At this time, it is extremely important to take effective fire extinguishing measures in time. [0003] In order to solve the problem of extinguishing fires in wind turbine cabins, Chinese patent application No. 201110412737.0 discloses a fire fig...

AI Technical Summary

Problems solved by technology

Although this can solve the above problems, it will lead to new problems, which are reflected in: First, the fire detection and fire extinguishing of the control cabinet are not carried out separately. When a fire occurs inside the control cabinet, the system cannot provide protection.

Because electrical fires may occur in this closed space, electrical components will be overheated and breakdown, wiring aging, insulation damage will cause short-circuit heating, poor contact of wiring connections will generate heat, and arcing will occur. High-temperature pyrolysis produces smoke, which in turn causes fire to spread

Second, the fire extinguishing agent aerosol used has residues after extinguishing the fire, which is an unclean fire extinguishing agent; the fire extinguishing agent IG541 used is stored under high pressure, and the pressure of the container is as high as 15.0MPa. When the fire extinguishing agent is released, it is easy to cause damage to the enclosure structure and the protected object damage

[0007] Fine water mist: Due to the weight of the engine room, the water tank needs to be placed on the ground, and the water is sent to the wind-stop engine room through the pump, and the system cost is relatively high

[0008] Dry powder: due to the potential damage to the unit equipment, secondary pollution, and indirect losses such as difficult cleaning after fire extinguishing, it is not recommended to use

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