Cooling system capable of on-line cleaning heat exchanger and cleaning method thereof

Abstract

The invention discloses a cooling system capable of on-line cleaning a heat exchanger, which comprises at least two branches. Each branch comprises a heat exchanger and a water inlet drain valve. Both ends of the heat exchanger are respectively connected with a trunk water inlet pipeline and a trunk backwater pipeline through branch pipes, the trunk backwater pipeline is provided with a trunk backwater valve, and branch pipes on both sides of the heat exchanger are respectively provided with a water inlet valve and a backwater valve; the water inlet drain valve is arranged on the branch pipe between the heat exchanger and the water inlet valve; and the water inlet drain valve is connected with a drain pipe. According to the invention, the drain pipe and the drain valve are arranged on the branch pipeline, so that the cooling system capable of on-line cleaning the heat exchanger can on-line clean the heat exchanger by utilizing the original pipeline and valve of the cooling system so as to avoid offline cleaning, which is labor-consuming and time-consuming. In addition, the cleaning manner with the complicated water inlet or backwater pipeline switch equipment or the cleaning manner of adding a cleaning pipeline pump in the prior art is not required.

Description

technical field [0001] The invention relates to the technical field of cleaning cooling water-cooled heat exchangers, in particular to a cooling system capable of cleaning heat exchangers online and a cleaning method thereof. Background technique [0002] Modern industrial production lines, such as large-scale thin-plate hot rolling mills, use a large number of net ring water cooling systems for mechanical and electrical equipment, in which water-cooled heat exchangers (hereinafter referred to as heat exchangers) are essential and key equipment in the cooling system. All kinds of media in itself or in the equipment are cooled by circulation. However, due to the fact that the net ring water will inevitably enter some impurities during the outdoor cooling cycle, the heat exchanger will be blocked from time to time, which will cause poor cooling of the equipment and cause equipment failure. Therefore, the heat exchanger must be cleaned regularly. [0003] At present, the clean...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a cooling system capable of cleaning the heat exchanger on-line, so as to solve the problem that the cleaning of the heat exchanger in the cooling system in the prior art is labor-intensive, time-consuming and requires a relatively long downtime of the equipment. long, and the online cleaning method requires a complicated pipeline switching device, which results in high cost

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