Cooling device for wind power generator

Abstract

The invention discloses a cooling device for a wind power generator. The cooling device comprises a first water pump, a wind cooler and a water-cooling pipeline, wherein a heating component of a unitis arranged on the water-cooling pipeline; a water inlet port of the water-cooling pipeline is connected with a water outlet port of the first water pump; a water inlet port of the first water pump isconnected with a water outlet port of the wind cooler; and a water inlet port of the wind cooler is connected with a water outlet port of the water-cooling pipeline. The device further comprises an automatic water replenishing device composed of a second water pump, a check valve, a liquid charge ball valve, a first pressure switch, a second pressure switch and a controller. Through the arrangement for the automatic water replenishing device, automatic water replenishing for the water-cooling pipeline can be realized, so that the problem that a fan stops working because a cooling medium cannot be timely replenished after being reduced due to the reasons of evaporation or dripping leakage and the like, is solved.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a cooling device for a wind power generator. Background technique [0002] The principle of wind power generation is that under the action of wind force, the wind wheel and blades generate kinetic energy, and the kinetic energy is accelerated by the gearbox and then transmitted to the generator (the direct-drive fan does not have a gearbox, and the kinetic energy is directly transmitted to the generator) for power generation, and then through the frequency conversion cabinet Regulate access to the network. Generators and frequency conversion cabinets will generate a lot of heat during operation, which needs to be dissipated to the surrounding environment. Therefore, the cooling system is generally configured for generators and frequency converters, and the heat emitted by them is taken away through repeated circulation of the medium, so that the generators and freq...

AI Technical Summary

Problems solved by technology

[0003] The existing wind turbine water cooling system is a closed system. During maintenance, all the internal media need to be released. After maintenance, the water cooling system needs to be refilled with liquid. At present, most of the liquid is filled manually, that is, the manual pressure pump is used to fill the liquid. , the whole liquid filling process takes about 2 hours, which is time-consuming and labor-intensive

At the same time, due to the leakage and evaporation of the water cooling system, the pressure of the water cooling system will gradually drop as the running time increases. If the cooling medium is not replenished in time, when the pressure drops to a certain level, the pressure switch on the water cooling system will generate an alarm signal, causing The water cooling system stops running. At this time, the maintenance personnel of the wind farm need to go to the unit, board the plane to check the problem and replenish antifreeze. During the whole process, the fan has been shut down and cannot generate electricity. This is a waste of wind resources.

Images