Double filter recoil self-cleaning water intake device and its working method

Abstract

The invention discloses a double-filtering back-flushing self-decontamination water taking device which comprises a water taking opening. The water taking opening penetrates through a dam and is provided with a filtering device. The water taking opening is connected with a water taking pipe. A back-flushing pipe is arranged on the water taking pipe. Back-flushing supercharging devices are arranged on the water taking pipe and the back-flushing pipe. The water taking opening is in a loudspeaker shape. One end, with small opening diameter, of the water taking opening is arranged in the dam. The filtering device comprises a coarse filtering screen and a fine filtering screen. One end, with large opening diameter, of the water taking opening is provided with the coarse filtering screen. The fine filtering screen is arranged in the middle of the water taking opening. According to the double-filtering back-flushing self-decontamination water taking device, the problems that in the prior art, a water taking opening filtering screen is blocked, decontamination difficulty is high, and equipment normal operation is affected are solved. The reliability and the safety of water supply system equipment operation are greatly improved, the fact that a unit can generate much power safely and continuously, and the power generation efficiency of an enterprise is improved.

Description

technical field [0001] The invention relates to a water intake device and its working method, in particular to a double-filter recoil self-cleaning water intake device and its working method used in the operating unit of a hydropower station. Background technique [0002] The original design of the cooling water supply of the hydropower unit adopts the water intake in front of the dam, and the water intake is located in the water blocking dam. The filter screen directly enters the straight pipe in front of the dam, passes through the main water intake valve in front of the dam, and then supplies water to the cooling system of the unit through the water intake filter in front of the dam. [0003] During the operation of the hydropower station unit, the filter screen of the water intake in front of the dam is often blocked, resulting in a reduction in the cooling water supply of the unit, which cannot meet the normal cooling water supply needs of the unit. The network cleanin...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a double-filter recoil self-cleaning water intake device and its working method, which solves the problems of high cleaning difficulty in the prior art and affects the normal operation of the equipment, reduces the difficulty of cleaning, improves the efficiency of cleaning, and better Keep equipment running

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