Forced pressure-in-draw-out type turbogenerator ventilation cooling system with multi-wind path interleaving

Abstract

The invention discloses a forced pressure-in-draw-out type turbogenerator ventilation cooling system with multi-wind path interleaving, which relates to the field of electric machinery. In order to solve the problem of high temperature of a stator iron core, a stator winding and a rotor iron core in an existing turbogenerator, a 'Y'-shaped stator internal air channel is formed in the stator iron core, a stator radial ventilation groove is reserved between the stator iron cores, the stator region is alternately divided into a stator hot air area and a stator cold air area along the axial direction, and the stator iron core is arranged in the stator base; the rotor area is alternately divided into a rotor hot air area and a rotor cold air area along the axial direction, the rotor hot air area and the rotor cold air area are connected through the axial ventilation holes of the rotor, a throw away type fan blade, a rotor first-stage pressurizing fan blade and a rotor second-stage pressurizing fan blade are arranged in the rotor hot air area, a rotor suction fan blade is arranged in the rotor cold air area. The turbine generator has the advantages that the cooling effect of the components of the turbogenerator is enhanced, the structure is simple, and the realization is convenient.

Description

Technical field: [0001] The invention relates to a forced press-in-extraction type steam turbine generator ventilation and cooling system with interwoven multi-air paths, belonging to the field of electric motors. Background technique: [0002] The large-capacity steam turbine generators that have been put into operation at present have reached the level of one million kilowatts, and will reach the level of 1800MW or even higher in the future. The larger the single capacity of the large-capacity turbo-generator, the better its economic performance. The increase in the capacity of the turbo-generator will bring a series of safety problems, and the efficient ventilation and cooling system is the safe and stable operation of the large-capacity turbo-generator. cornerstone. It can be said that without the advancement of ventilation system cooling technology, there will be no development of large-capacity turbo-generators. Therefore, breakthroughs in key technologies of large-c...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a forced press-in-draw-out turbogenerator ventilation and cooling system interwoven with multiple air paths to solve the excessive temperature of each component caused by the unreasonable ventilation design of the entire space area of ​​a large-capacity turbogenerator. The high problem increases the total fluid flow in the turbogenerator, improves the utilization rate of the cooling gas in the turbogenerator, speeds up the flow speed of the cooling gas, and effectively reduces the The temperature of the components reduces the thermal stress in the axial direction of the turbo-generator and improves the safe and stable operation of the large-capacity turbo-generator

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