Novel steam turbine generator cooling system

Abstract

The invention discloses a novel steam turbine generator cooling system which comprises an inner-cooling circulation cooling system and an outer-cooling refrigerant water heat exchanger, wherein the inner-cooling circulation cooling system comprises an air cooler, an oil cooler, a check valve, an oil pump, an oil tank, a condenser, a cooling tower, a circulating pump and an industrial water supplement port. The two ends of the air cooler and the oil cooler are communicated respectively, and the two ends of the condenser and the cooling tower are communicated respectively; the lower end of the cooling tower is connected with the circulating pump; one end of the oil cooler is connected with an industrial water inlet, and the other end is connected with a loop communicating the condenser and the cooling tower; the check valve is arranged at the lower end of the oil cooler; and the oil pump is arranged at the lower end of the check valve and communicated with the oil tank. The two ends of the refrigerant water heat exchanger are communicated with one ends of the air cooler and the oil cooler respectively. According to the invention, by use of the refrigerant water discharged by the factory and through the heat exchange between the refrigerant water heat exchanger and the cooling water, the temperature of the cooling water is reduced, the cooling performance of the generator is guaranteed, the water resources are greatly saved, and relatively high social and economic benefits are realized.

Description

technical field [0001] The invention relates to the field of generators, in particular to a cooling system of a steam turbine generator. Background technique [0002] At present, during the operation of small turbogenerators, due to various losses, the temperature of each part of the generator will rise. In actual operation, the temperature of the stator core of the generator is required to be no higher than 105°C, and the normal operating temperature is required to be at 60°C. ~80°C, the maximum temperature of the rotor does not exceed 120°C. In order to achieve the above performance indicators, the generator is usually cooled by an air cooling system, which uses air to take away the heat generated by the generator stator winding, iron core and rotor, and then cools it in the surface heat exchanger The heat is transferred to the cooling water in the air cooler. When using this system to cool down the generator, it is stipulated in actual operation that the inlet air temp...

AI Technical Summary

Problems solved by technology

However, due to the high temperature in summer and the temperature rise of the cooling water caused by the closed-loop operation of circulating water, the air temperature at the inlet of the air cooler cannot meet the safe operation requirements of the generator set. Load to solve the problem of high wind temperature of the generator, so in today's high environmental protection requirements, the use of industrial water and the discharge of industrial water is no longer allowed by the society, so a new solution must be found

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