Supplementary cooling device and supplementary cooling method of air-cooling power generator

Abstract

The invention discloses a supplementary cooling device and a supplementary cooling method of an air-cooling power generator, which are capable of enabling the air-cooling power generator to generate power with full load at high-temperature weather. The device comprises an air-cooling power generator, a cool air production device, a cool air passage, an air blower and a power generator air inlet temperature-humidity gauge, wherein the cool air production device is installed outside an air-cooling power generator air chamber, one end of the cool air passage is communicated with an air outlet of the cool air production device, the other end of the cool air passage is communicated with an air compensation port, the air blower is installed inside the cool air passage to be close to the air compensation port, the power generator air inlet temperature-humidity gauge is installed on an air inlet passage of the power generator to be close to a rotor, and an overhauling hole is provided with a hot air exhaustion door which can be opened and closed. Due to the adoption of the device, cool air produced by the cool air production device can be blown by the air blower into the air inlet passage of the power generator through the cool air passage via the air compensation port, so that the air inlet temperature can be reduced, the heat of a power generator stator coil can be adequately radiated, and the power generator can be operated at a full load at the high-temperature weather.

Description

technical field [0001] The invention belongs to the technical field of air-cooled generators, and in particular relates to a supplementary cooling device and method for an air-cooled generator in high-temperature weather. Background technique [0002] During the power generation process of the generator, the heat release of the stator coil of the generator will increase the internal temperature of the generator. In order to ensure the safe operation of the generator, air cooling is usually used to keep the temperature of the stator coil not exceeding the rated temperature. [0003] Generator air cooling, that is, air cooling, refers to sending cold air into the generator in order to reduce the temperature of the generator. The cold air absorbs the heat generated by the generator and becomes hot air. The hot air is then cooled by circulation in the air cooler. The water is exchanged for heat and turns into cold air, which can be recycled. [0004] Air-cooled generators usua...

AI Technical Summary

Problems solved by technology

This kind of closed forced circulation air cooling system tends to have poor cooling effect in high temperature weather environment. The temperature of the cold air becomes higher, that is, the temperature of the inlet air of the generator increases, which leads to the deterioration of the cooling effect of the entire closed forced circulation air cooling system, which further leads to the overheating of the stator coil of the generator, which in turn poses a threat to the operation safety of the generator. threaten

In this case, the method of reducing the load of the generator is generally used to control the stator coil to maintain the normal operating temperature, but the result of doing so is to directly reduce the power generation and reduce the economic benefits of the power plant.

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