Wind generating set closed cooling system

Abstract

The invention provides a wind generating set closed cooling system. The wind generating set closed cooling system comprises a pump station, an external heat exchanger, a heat exchanging module of equipment to be cooled and a connection pipeline, wherein the pump station comprises a circulating pump and a three-way valve; a pipeline on the outlet side of the circulating pump is connected to the inlet of the three-way valve; the two outlets of the three-way valve are connected to a pipeline on the inlet side of the external heat exchanger and a bypass pipeline of the external heat exchanger; a joint between the pipeline on the outlet side of the external heat exchanger and the bypass pipeline is connected to the inlet of the heat exchanging module; a pipeline on the outlet side of the heat exchanging module is connected with a pipeline on the inlet side of the circulating pump. By adopting the wind generating set closed cooling system, high-pressure cooling liquid can be prevented from directly flowing into the heat exchanging module of the equipment to be cooled, impact of the cooling liquid is reduced, and the heat exchanging module is protected.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a closed cooling system for a wind power generating set. Background technique [0002] As a green and clean energy, wind energy has developed rapidly in recent years. With the development of onshore wind resources becoming increasingly saturated, high-quality offshore wind energy resources have gradually become the focus of development in various countries, and wind turbines are becoming more and more large-scale. Although offshore wind power has the advantages of high-quality wind resources, no land occupation, and good grid connection conditions, it also faces challenges such as high cost, difficult maintenance, and harsh environmental conditions. [0003] With the development of offshore wind power, wind turbines are getting farther and farther away from the coastline. In addition, the environment in Shanghai is particularly harsh, and its maintenance is becoming more and...

AI Technical Summary

Problems solved by technology

For a cooling system using a circulating pump, because the mechanical seal of the circulating pump is a weak point, the unit often shuts down for a long time due to unforeseen damage to the mechanical seal

For the cooling system with one standby and one active circulating pump, although the standby circulating pump can be cut in if one circulating pump is damaged, so that the unit can continue to work normally, but the current switching of one standby and one active needs to be switched manually. Moreover, if a main circulation pump is not damaged after long-term operation, the backup pump will not start, which will lead to inconsistent service life of the two circulation pumps

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