Wind power generator cooled by solar injection

Abstract

The invention discloses a wind power generator adopting solar ejecting type cooling, which belongs to the technical field of wind power generator. The wind power generator mainly comprises a desk frame (1), a wind wheel (2), a slow-speed shaft (3), a gear box (4), a gear box heat exchanger (5), a high speed shaft (6), a controlling frequency converter (7), a controlling frequency converting heat exchanger (8), a generator (9), a generator heat exchanger (10), secondary refrigerants (11), a secondary refrigerant transportation pipe (13), a heat accumulator (14), a heat accumulator transportation pipe (16), cooling media (30), and a cooling media transportation pipe (32). The winder power generator is characterized in that the winder power generator also comprises a solar thermal collector (17) arranged on the outer surface of an engine room cover, and an ejecting type refrigerating machine (19) for cooling and cycling the secondary refrigerants (11) running through the gear box, the controlling frequency converter, and the generator heat exchanger (10). The wind power generator has the advantages of low electric energy consumption, good cooling effect, excellent environmental protection benefit, and the like.

Description

technical field [0001] The invention relates to a wind power generator adopting solar jet cooling, which belongs to the technical field of wind power generation. Background technique [0002] In order to achieve efficient, stable, and safe long-term operation of wind turbines, it is necessary to configure necessary cooling devices in wind turbines to ensure that components such as gearboxes, generators, and control frequency converters work within a certain temperature range. With the development of offshore wind power generation technology, the capacity of a single generator has reached 5-20MW, and the heat generated by the gearbox, generator and control frequency converter will increase sharply. How to use efficient cooling methods has become a high-power wind power generation technology. One of the key factors of application. Existing MW-level wind turbines are mainly cooled by water cooling, that is, by setting an air-water heat exchanger outside the engine room, the ci...

AI Technical Summary

Problems solved by technology

Existing MW-level wind turbines are mainly cooled by water cooling, that is, by setting an air-water heat exchanger outside the engine room, the circulating water flowing through the gear box, generator and inverter heat exchanger is carried by the high-altitude high-speed airflow. The cooling system has the disadvantages of low cooling efficiency and heavy weight, and the cooling temperature is greatly affected by the environment, which can no longer meet the demanding requirements of high-power wind turbines for efficient and reliable operation.

Wind turbines that use evaporative cycle cooling such as patent ZL200610039658.9 can obtain greater cooling capacity and achieve the temperature required for the best working conditions of wind turbines, but consume additional power, which reduces the energy consumption to a certain extent. generator efficiency

In addition, the system generally uses chlorofluorocarbons as refrigerants, which are not conducive to environmental protection because they will destroy the ozone layer of the atmosphere.

It can be seen that the existing wind turbine cooling technology has been difficult to meet the high-efficiency and reliable operation of high-power wind turbines.

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