Bubble dispersing type air filter device for desalination water tank of water production system in power plant

Abstract

The invention discloses a bubble dispersing type air filter device for a desalination water tank of a water production system in a power plant. The device comprises a container (9) containing a filtrate; a one-way breathing valve (8) is arranged at the top of the container and communicates with the atmosphere; a side wall is provided with an air inlet (5) and an overflow port externally connectedwith a water seal overflow pipe (6); and a dirt discharging valve (7) is arranged at the bottom. The device has the characteristics that the container interior is divided into three cavities from bottom to top; and a first-stage, a second-stage and a third-stage disperser (1,2,3) are sequentially arranged; the air flow areas of the three stages of dispersers are increased step by step, and bubblesare uniformly dispersed in the container by the dispersers; the diameters of the air outlets of the three stages of dispersers are gradually reduced, and the diameter of the final third-stage air outlet is 0.23mm. According to the device provided by the invention, fine filtering can be carried out automatically on air getting in or out of the desalination water tank without the need of maintenance.

Description

technical field [0001] The invention relates to an air filter device, in particular to a bubble-distributed air filter device used in a desalinated water tank of a water production system in a power plant. Background technique [0002] At present, domestic power plants, especially coastal power plants, are equipped with water production systems. The storage water in the desalted water tank of the water production system needs to be designed with an opening system, so as to maintain the upper level of the water tank when the liquid level in the water tank changes at any time. Steady air pressure and normal fluid level fluctuations. When the liquid level in the water tank changes, the opening system will suck the external air into the water tank through the breathing port on the top of the water tank. At this time, the sundries and salt mixed in the external air will enter the water tank, and when the liquid level of the water tank changes, the gas at the upper part of the li...

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Problems solved by technology

The medium isolated by the water seal device is water or alkaline solution, relying on the U-shaped water seal to filter the larger impurities in the atmosphere, it is impossible to filter the air entering and leaving the water tank; and it is necessary to add filter liquid regularly, and the maintenance is relatively large. Big

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