On-line back flushing device of panel-type heat exchanger and flushing method thereof

A technology for backwashing and heat exchangers, applied in the direction of cleaning heat transfer devices, flushing, lighting and heating equipment, etc., can solve the problems of blockage of cooling water in heat exchangers, melting of bearing bushes of operating equipment, deterioration of heat exchange effects, etc. The effect of small drainage resistance, small investment and simple method

Inactive Publication Date: 2013-03-27
SHANDONG ZHONGSHI YITONG GRP
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0002] The panel heat exchanger, which uses water as the cooling medium, is widely used in power plants. This type of heat exchanger is often not designed with a backwashing device. With the long-term operation of the system, the quality of the cooling water gradually deteriorates, which often causes the heat exchanger The cooling water side is blocked, the heat exchange effect deteriorates, the temperature of the cooled medium rises rapidly, and the operation of the electric feed water pump and other equipment is forced to stop, and then the heat exchanger is washed or cleaned. The heat exchanger can only be restored after the cleaning work is completed, and then the The equipment is put into operation. On the one hand, the processing workload is very large, and on the other hand, it will cause economic losses due to the need to stop the equipment; when the heat exchanger is seriously blocked, it will even cause fatal injury accidents such as the melting of the bearing bush of the operating equipment. occur

Method used

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  • On-line back flushing device of panel-type heat exchanger and flushing method thereof

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] figure 1 Among them, an online backwashing device for a panel heat exchanger, which includes a panel heat exchanger 7, the panel heat exchanger 7 is connected to the cooling water inlet pipeline and the cooling water return pipeline, and the cooling water inlet pipeline is also A backwash drainage pipeline is provided, and a backwash operation valve 6 is arranged on the backwash drainage pipeline; at least one pressure gauge and at least one pressure transmitter are respectively arranged on the cooling water return pipeline and the cooling water inlet pipeline . A cooling water inlet operation valve 1 is provided on the cooling water inlet pipeline.

[0019] The cooling water return pipeline is divided into two parallel pipelines, one of which is provided with a cooling water return bypass operation valve 2, and the other pipeline is provided w...

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Abstract

The invention relates to an on-line back flushing device of a panel-type heat exchanger and a flushing method thereof. The device has a reasonable structure, is flexible to operate and has less investment, and comprises a panel-type heat exchanger; the panel-type heat exchanger is connected with a cooling water inlet pipeline and a cooling water return pipeline; the cooling water inlet pipeline is provided with a cooling water inlet operating valve, and is also provided with a back flush drain pipeline; the back flush drain pipeline is provided with a back flush operating valve; the cooling water return pipeline and the cooling water inlet pipeline are also respectively provided with at least one pressure gauge and at least one pressure transmitter.

Description

technical field [0001] The invention relates to an online backwashing device for a panel heat exchanger and a washing method thereof. Background technique [0002] The panel heat exchanger with water as the cooling medium is a heat exchange equipment widely used in power plants. This type of heat exchanger is often not designed with a backwashing device. With the long-term operation of the system, the quality of the cooling water gradually deteriorates, often causing the heat exchanger The cooling water side is blocked, the heat exchange effect deteriorates, the temperature of the cooled medium rises rapidly, and the operation of the electric feed water pump and other equipment is forced to stop, and then the heat exchanger is washed or cleaned, and the heat exchanger can only be restored after the cleaning work is completed. The equipment is put into operation. On the one hand, this treatment method has a very large workload, and on the other hand, it causes economic losses...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28G9/00
Inventor 张雷张中正陈志新
Owner SHANDONG ZHONGSHI YITONG GRP
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