Circulating water feeding system of cooling device of hydropower generation set

Abstract

The invention discloses a circulating water feeding system of a cooling device of a hydropower generation set, which solves the problem of abnormal halt of the set, caused by blockage of a conventional water filter by river floating matters, sand and stone and the like in a hydropower station. The circulating water feeding system of the cooling device of the hydropower generation set comprises a circulating water pool (1), a cooler (2), a mechanical water pump (3) and an automatic water replenishing device, wherein the circulating water pool (1), the cooler (2) and the mechanical water pump (3) are sequentially connected by using a pipeline; water inlets (4) of the cooling device for a bearing seat of the hydropower generation set and an air cooler are connected with a water outlet of the mechanical water pump (3), water outlets (5) of the cooling device for the bearing seat of the hydropower generation set and the air cooler are connected with the circulating water pool (1); the mechanical water pump (3) is driven by a rotor large shaft (6) of a power generator of the hydropower generation set to work; the elevation of the circulating pool (1) is higher than that where the hydropower generation set is in by 3-5m; and internally-circulating water is clean water. The circulating water feeding system is suitable for cooling the hydropower generation set with poor water quality.

Description

technical field [0001] The invention relates to a circulating water supply system of a cooling device of a hydraulic power generating unit, in particular to a technology for circulating and forcing cooling water to the cooler of a hydropower generating set from the outside. Background technique [0002] During the operation of the hydropower generating unit of the hydropower station, not only the upper guide bearing, thrust bearing and lower guide bearing of the generator, but also the guide bearing of the turbine will generate a lot of heat. As the temperature rises, the generator rotor and stator will also generate a lot of heat. And it generates more heat than bearings. The temperature rise of each bearing of the hydroelectric generating set will cause the bearing bush to burn out, affect the normal operation of the generating set, and the performance of the bearing lubricating oil will be greatly reduced, the working environment of the bearing will deteriorate, and the n...

AI Technical Summary

Problems solved by technology

The most disadvantage of this traditional method is that it is difficult to soften and neutralize the cooling water and remove harmful substances such as aquatic organisms in the cooling water due to the continuous drainage of the cooling water. Therefore, after a period of operation, the bearing cools down Scale will be generated inside the air cooler and air cooler, which will accumulate sediment and unhealthy aquatic organisms. It needs to be removed frequently to ensure the normal operation of the bearing and air cooler. If it is not removed in time, the cooling effect will be greatly reduced and affect the water conservancy generator set. normal work

[0004] For the dam front, volute, and tail water that are not clean enough to directly cool the bearing and air cooler, due to the large amount of impurities and sediment content in the cooling water, it is more difficult to guarantee the normal operation of the hydropower generating unit, and the operating cost is even higher. high

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