Dry-wet parallel air-cooling condenser washing system and washing cycle determining method thereof

Abstract

Disclosed are a dry-wet parallel air-cooling condenser washing system and a washing cycle determining method thereof. The dry-wet parallel air-cooling condenser washing system is characterized in that an air compressor is communicated with a high-pressure air storage cabinet; the high-pressure air storage cabinet is communicated with a first tee reversing valve; a desalting water tank is communicated with a high-pressure water pump through a second stop valve; the high-pressure water pump is communicated with a mobile washer through the first tee reversing valve; the mobile washer is arranged on a transversely-moving frame through a vertical track pulley; the lower end of the transversely-moving frame is arranged on a lower transverse track through a first transverse track pulley, and the upper end of the transversely-moving frame is arranged on an upper transverse track through a second transverse track pulley; the vertical track pulley is connected with a drive motor and a fixed pulley; a low-pressure cylinder of a turbine is communicated with an air-cooling condenser pipe bundle and a condensation tank through a steam exhaust distribution pipe; the condensation tank is communicated with a boiler water supply. The washing cycle determining method of the dry-wet parallel air-cooling condenser washing system is scientific and reasonable, so that the sum of the ash scale loss cost and compressed air blowing loss cost of an air-cooling condenser is minimum, and the service life of the air-cooling condenser is prolonged.

Description

technical field [0001] The invention relates to the technical field of thermal power generation, and relates to a dry-wet parallel air-cooled condenser cleaning system and a cleaning cycle determination method thereof. Background technique [0002] The abundance of coal in my country determines that thermal power will still be in a dominant position in the short term. However, my country's coal is mainly distributed in the "Three North" regions such as Northeast China, North China, and Northwest China. For example, the "Three North" regions cover 14 of my country's 16 major coal power bases However, the "Three Norths" region is basically in a water-deficient or water-poor area, which causes a contradiction in the geographical structure of coal combustion and water resource distribution in the development of thermal power. Excellent water saving rate, simple structure, low cost and other excellent characteristics have been widely used in the "three north" areas. However, the a...

AI Technical Summary

Problems solved by technology

[0005] The concept basis of the present invention is, aiming at the deficiencies existing in the existing air-cooled condenser dirt cleaning equipment, 1) the present invention adopts the air-cooled condenser cleaning system of high-pressure desalinated water flushing and compressed air purge in parallel, in summer and in summer High-pressure desalinated water flushing is implemented in winter time, and compressed air purging is implemented in other time limits. On the one hand, compressed air purging uses air instead of desalinated water as the cleaning medium, which can solve the large-scale, high-frequency, high-pressure desalinated water flushing water resources in the "Three North" area The problem of high consumption and high cleaning costs, on the other hand, high-pressure desalinated water flushing can better clean the hard scale, catkins and other blockages in the fin channel of the air-cooled condenser that are not easy to be blown by compressed air, high-pressure desalinated water Parallel with compressed air, it can not only realize continuous and clean wet cleaning, but also realize low-cost and harmless dry blowing; 2) the present invention can implement desalted water flushing and compressed air on the outer surface of the air-cooled condenser The mobile cleaner with parallel function of purging integrates desalted water flushing and compressed air purging into the same mobile device, which simplifies the mechanical structure of the air-cooled condenser cleaning system. The tube bundle is arranged far away, which can make full use of the characteristics of high pressure and large momentum of desalinated water, so that the diffusion area of ​​desalinated water is larger during horizontal flushing, and a larger area of ​​air-cooled condenser can be cleaned under the condition of constant desalinated water volume Tube bundles save water, compressed air nozzles adopt tapered nozzles, and are arranged closer to the tube bundles of the air-cooled condenser, which can further increase the purge pressure of the compressed air purge outlet and avoid the difficulty of effective purge due to low air density and low momentum At the same time, it is close to the tube bundle of the air-cooled condenser to avoid the rapid diffusion of compressed air and release the pressure; 3) the present invention determines the cleaning cycle according to the best purging interval within the compressed air purging operation time, and adjusts the compressed air purging Purge intervals that minimize the sum of air-cooled condenser fouling costs and compressed air purge losses

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