Independent water cooling device of large-scale megawatt-level wind generating set

Abstract

The invention discloses an independent water cooling device of a large-scale megawatt-level wind generating set. The independent water cooling device comprises at least a set of cooling system, wherein the cooling system comprises a device heat exchange water tank, the device heat exchange water tank is provided with a water inlet and a water outlet, the water inlet and the water outlet are connected with cooling water circulating pipelines, one cooling water circulating pipeline closing to one side of the water outlet of the device heat exchange water tank is provided with a plurality of temperature controlled switches, the other cooling water circulating pipeline at rear ranges of the temperature controlled switches is connected with a plurality of air-cooling water heat exchangers in parallel, each temperature controlled switch is connected with a contactor of one air-cooling water heating exchanger in a controlling way, and the cooling water circulating pipeline at the rear range of the water outlet of the air-cooling water heat exchanger is also provided with a temperature sensor, a pressure sensor and a water pump. The independent water cooling device has a good cooling effect, can automatically operate according to water temperature and can be installed in an engine cabin of a draught fan, the installation is convenient and simple, the weight of an engine base of the draught fan can be greatly reduced, the maintenance can be convenient, the master control load of the draught fan can be effectively reduced, and the manufacturing cost of the draught fan can be reduced.

Description

technical field [0001] The invention relates to a cooling device, in particular to an independent water cooling device for a large-scale megawatt wind power generating set. Background technique [0002] With the emergence of megawatt-level wind turbines, the traditional way of cooling each device individually by fans has gradually been unable to meet the heat dissipation requirements of the device. At present, the cooling of large wind turbines is mainly designed in the way of installing the top of the nacelle and relying on natural wind to cool the water heat exchanger. However, as the capacity of a single unit continues to increase, if this method is still used to design cooling systems for super-large wind turbines such as 5MW and 6MW, it is necessary to install cooling water tanks of several tons or even tens of tons on the top of the nacelle. A large amount of material is required to fix the heat exchange tank, which will greatly increase the weight of the machine base...

AI Technical Summary

Problems solved by technology

However, as the capacity of a single unit continues to increase, if this method is still used to design cooling systems for super-large wind turbines such as 5MW and 6MW, it is necessary to install cooling water tanks of several tons or even tens of tons on the top of the nacelle. A large amount of material is required to fix the heat exchange tank, which will greatly increase the weight of the machine base and increase the manufacturing cost, and there are many pipes in the water cooling system, so installing it outside the engine room will greatly increase the difficulty of future maintenance

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