Water filter

Abstract

The invention relates to a water filter for cooling, sealing and supplying water, which comprises: a water inlet pipe, a tank body, a filter bowl (screen), a dirt-collection box, a blow-down pipe, a floater outlet, and an outflow pipe with a discharge valve. This invention overcomes completely the blockage problem of filter bowl (screen) in prior art by much of garbage, sand and aquatic life, has a little change to current structure, and has strong applicability.

Description

(1) Technical field [0001] The invention relates to a technical water supply-cooling and sealing water filter for hydropower station water supply. (2) Background technology [0002] At present, the technical water supply of hydropower stations is filtered by fully automatic water filters, and there are two or more water filters running in parallel, and the maintenance or withdrawal of one of them will not affect the technical water supply of the unit. The water filter automatically discharges sewage during operation. Its structure is generally composed of a box body, a water inlet pipe, a filter component, a sewage scraper, a sewage pipe valve, and a water outlet pipe. The sewage valve adopts an electric valve, which can be operated manually or by a time relay. Timed start. The water outlet of the water filter is directly supplied to the unit or supplied to the unit after being pressurized by a booster pump. [0003] During the operation of the water filter, water enters f...

AI Technical Summary

Problems solved by technology

However, in the actual operation process, the water filters of the power stations built on the Yangtze River and its tributaries are often blocked by a large number of aquatic organisms such as mussels and snails, and the sewage outlets cannot discharge these aquatic organisms and garbage. Snails, etc. are attached to the mesh of the filter screen and in the clear water chamber for reproduction and growth.

In a not too long period of time, the mesh of the filter cup (mesh) is blocked, causing the cooling water supply of the unit to be insufficient, which brings great safety hazards to the generator set. Sometimes the generator set is forced to stop due to the lack of cooling water supply. ;In the power stations in the middle and lower reaches of the Yellow River, due to the high sediment content of the river water, the inside of the water filter is often blocked by sediment

The existing water filter has a certain sewage discharge effect on smaller silt and floating garbage, but has no obvious effect on the sewage discharge of river mussels and a large amount of silt; large-scale river mussels grow in the filter cup (net), not only If the mesh is blocked and the garbage is still hanging on the mussels, the garbage will accumulate more and more, resulting in a vicious circle until the incoming water cannot pass through the water filter, resulting in insufficient water supply for the generator set

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