A self-cleaning air filter device for nuclear power plant air cooling system and its realization method

Abstract

The invention discloses a self-cleaning air filtering device for a nuclear power plant air cooling system and an implementation method thereof. The self-cleaning air filtering device comprises a guide device. The method comprises the following steps: driving the guide device so as to drive a metal filtering net to move, screening impurities in air by the metal filtering net in the transmission process, wherein the impurities are driven to move from the horizontal direction to the vertical direction by a guide shaft; brushing the impurities on the metal filtering net by using a cleaning brush, removing the impurities on the cleaning brush by using a cleaning comb, and finally allowing the sundries to drop into a sundries collection box along with the groove. According to the method provided by the invention, the metal filtering net is a belt type filtering net, a continuous circular movement can be implemented, the sundries are not accumulated on the filtering net, the whole process of cleaning air by the metal filtering net is continuous and automatic, detaching and cleaning are not needed, and the sundries on the filtering net can be timely cleaned by the air filtering device under the condition that the filtering efficiency is ensured. Therefore, the wind resistance can be reduced to the greatest degree, and normal operation and operating benefits of the air cooling system can be guaranteed.

Description

technical field [0001] The invention relates to nuclear power plant cooling technology, in particular to a self-cleaning air filter device for an air cooling system of a nuclear power plant and a realization method thereof. Background technique [0002] With the continuous construction of nuclear power plants, they will inevitably develop inland and be built in sparsely populated mountainous or desert areas. Due to the lack of water resources in these areas, the traditional direct cooling method of river water and sea water is not feasible, and air cooling must be used. Way. At present, the common air cooling technologies include: direct air cooling using air cooling islands and indirect air cooling using cooling towers. Considering the stability of nuclear power plants and the difficulty of construction and construction costs, these two air cooling methods cannot meet the requirements of nuclear power plants in this area. , which requires appropriate transformation of thes...

AI Technical Summary

Problems solved by technology

At present, the common air cooling technologies include: direct air cooling using air cooling islands and indirect air cooling using cooling towers. Considering the stability of nuclear power plants and the difficulty of construction and construction costs, these two air cooling methods cannot meet the requirements of nuclear power plants in this area. , which requires appropriate transformation of these two air cooling methods, combining the advantages of the two to form an indirect air cooling system with unitary air coolers as cooling equipment

[0003] However, due to the poor surrounding environment in sparsely populated mountainous areas or deserts, sandstorms often occur, resulting in a lot of dust and debris in the air. During the process of air cooling, these debris can easily enter the air cooler with the wind and block the unitary air cooler. Finned tubes reduce the heat transfer efficiency of air coolers, thereby reducing the reliability and safety of nuclear power plant operations in water-scarce areas

This requires the introduction of an air filter device to clean the dust and debris in the air. At present, the main filtering method of the air cooler is to use a fixed filter, but the fixed filter has the difficulty of cleaning and the excessive debris on the filter. Most of them will cause problems such as increased wind resistance, reduced air volume at the air inlet, and reduced efficiency of the air cooler. Therefore, it is very important to design an air filter device with self-cleaning function for the unitary air cooler of nuclear power plants in water-scarce areas.

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