Method and system for thermally washing pipeline

A technology for flushing systems and pipes, applied in flushing, chemical instruments and methods, cleaning methods and utensils, etc., can solve the problems of poor water quality, long flushing time, large flushing resistance, etc., to achieve low water and power consumption, flushing Short time, good flushing effect

Active Publication Date: 2010-10-20
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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Problems solved by technology

[0002] At present, the closed-loop cooling water system in power plants is complex and the flushing resistance is relatively large. The traditional room temperature water flushing method used in it has long flushing time, large waste water discharge, high power consumption, and water quality often deteriorates during normal operation of the system. , resulting in problems such as blockage of equipment pipes and deterioration of heat exchange effect

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  • Method and system for thermally washing pipeline
  • Method and system for thermally washing pipeline

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and implementation examples.

[0017] figure 1 Among them, it includes an expansion tank 1, and the expansion tank 1 communicates with the heating steam, and at the same time, the expansion tank 1 is also connected with desalinated water replenishment and condensed water replenishment through pipelines. The discharge pipe of the expansion tank 1 is connected to the closed water pump A2 and the closed water pump B3, and a section of pipeline and a control valve 4 for accelerating the water temperature increase are arranged between the discharge pipe of the expansion tank 1 and the inlets of the two closed water pumps for lifting and flushing Water temperature to 60°C. The two closed water pumps run in parallel and are respectively connected to the closed water cooler A5 and the closed water cooler B6 respectively. The outlet pipes of the two closed water coolers are divid...

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Abstract

The invention relates to a method and a system for thermally washing a pipeline, which have the advantages of convenient method, low energy consumption and good washing effect. The method comprises the following steps of: (1) starting two closed type water pumps after a system pipeline and an expansion tank are filled with water and deflated, circulating in a closed mode for one hour, and then stopping the pumps and discharging the water; (2) starting two closed type water pumps after the system pipeline and the expansion tank are filled with water and deflated again, introducing heating steam to the expansion tank by opening a control valve, cutting off the heating steam source after the water temperature rise to 60 DEG C, stopping the pumps after the system is washed for two hours, completely discharging the water in the system in a multi-point and discontinuous discharging mode during and after the washing period, and waiting for the system pipeline to be completely cooled down; and (3) washing until the washing water quality is detected to be qualified by repeatedly executing step (2).

Description

technical field [0001] The invention relates to a pipe thermal flushing method and system, which are suitable for flushing the pipes of the closed circulation cooling water system of a power plant. Background technique [0002] At present, the closed-loop cooling water system in power plants is complex and the flushing resistance is relatively large. The traditional room temperature water flushing method used in it has long flushing time, large waste water discharge, high power consumption, and water quality often deteriorates during normal operation of the system. , causing problems such as blockage of equipment pipes and deterioration of heat exchange effect. Contents of the invention [0003] The object of the present invention is to solve the above problems and provide a pipe thermal flushing method and system with the advantages of simple method, low energy consumption and good flushing effect. [0004] To achieve the above object, the present invention adopts the fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28G9/00B08B9/032
Inventor 张雷
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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