Retractable cleaning device for copper pipes of condenser

Abstract

The invention relates to a retractable cleaning device for copper pipes of a condenser. The cleaning device comprises a closed shell arranged on one water inlet end of the condenser. The shell comprises an upper semi-closed cavity with a rectangular cross section and a lower semi-circular cover plate, a water inlet cavity is formed between the shell and a condensation copper pipe area, and the semi-circular cover plate is provided with a condensate water inlet communicating with the water inlet cavity. A mobile base is arranged in a cavity and provided with retractable movable spray nozzle assemblies and can move up and down, and thus the mobile base descends during cleaning, and the normal work of the condenser is not influenced at ordinary times. After the mobile base descends, the movable spray nozzle assemblies can enter all the condensation copper pipes, acid cleaning fluid is injected into the condensation copper pipes so as to perform cleaning, and after cleaning is performed, the movable spray nozzle assemblies can automatically retract. The retractable cleaning device can be transformed on the basis of an existing condenser, is low in cost and high in cleaning efficiency,and greatly lowers the labor cost and workload during cleaning.

Description

technical field [0001] The invention relates to a condenser in the field of steam power generation in thermal power plants, in particular to a telescopic cleaning device for copper pipes of the condenser. Background technique [0002] The condenser is a heat exchanger that condenses the exhaust steam of the steam turbine into water, also known as the rehydrator. The principle of the general water cooling condenser is to set several condensing copper tubes in a closed chamber, and there are gaps between the condensing copper tubes. In this way, by passing condensed water into the condensing copper tubes, the water vapor will pass through When condensing the gap between the copper tubes, the water vapor and the condensed water exchange heat through the contact of the wall of the condensed copper tube, thereby condensing into liquid droplets. During this process, the condensed water in the condensed copper tube will inevitably be heated . [0003] In the prior art, in order t...

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Problems solved by technology

[0005] In order to solve the problem of scale cleaning in the condensing copper tube of the condenser, the present invention provides a telescopic cleaning device for the copper tube of the condenser. By installing the cleaning equipment on the existing condenser, it does not affect the The condenser works, and when it needs to be cleaned, it enters the condenser to clean the inside of the condensing copper tube. After many times of conception, drawing, experimentation and improvement, three relatively complete and industrially-proven The implemented solution, and experimented on the No. 2 and No. 3 condensers of Yimei Coal Group Thermal Power Company, the effect is very good, not only can greatly improve the cleaning efficiency of the condenser, but also save manpower and workload during cleaning , and the cost of transformation is also controlled between 17,000-35,000 per unit (the hydraulic station company itself already has it, and only needs to lead out new hydraulic pipelines), compared with the economic cost, time cost and manpower saved In terms of cost, it is very cost-effective; after negotiation with Thermal Power Company, one of the solutions is owned by Thermal Power Company, and the other two solutions are owned by Zhang Xiaobo. One of these two solutions is the present invention

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