A method for adjusting the variable operating conditions of the secondary circuit cooling water system

A technology of cooling water system and adjustment method, which is applied in ship building, ship propulsion, ship, etc., can solve the problems of flow distribution and control technology constraints, double-circuit coordination and matching operation complexity, etc., to improve system interchangeability and reliability , reduce the boundary range, and reduce the effect of vibration and noise levels

Active Publication Date: 2021-07-13
CHINA SHIP DEV & DESIGN CENT
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  • Abstract
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Problems solved by technology

However, due to the large number of cooling users related to the cooling water system, there are great differences in the water consumption, resistance characteristics, heat load, and variable working conditions of different users. There are constraints in flow distribution and control technology

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  • A method for adjusting the variable operating conditions of the secondary circuit cooling water system

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Embodiment Construction

[0016] In order to better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] Such as figure 1 As shown, a secondary loop cooling water system variable working condition adjustment system includes a seawater loop and a freshwater loop. The seawater pipeline is composed of the first and second seawater pipelines connected in parallel. The first seawater pipeline is sequentially arranged along the liquid flow direction. Seawater pump 1-1, first seawater ball valve 1-3, first desalinated seawater heat exchanger unit 3 and first seawater flow regulating valve 1-5, and second seawater pump 1 is arranged in sequence along the liquid flow direction on the second seawater pipeline -2, the second seawater ball valve 1-4, the second seawater heat exchanger unit 4 and the second seawater flow regulating valve 1-6, the first and second seawater pipelines are connected by connecting ...

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Abstract

The present invention proposes a system and method for adjusting working conditions of a secondary-circuit cooling water system, including a seawater circuit and a freshwater circuit, which are respectively composed of two seawater pipelines and freshwater heat exchange pipelines connected in parallel, and seawater pumps, The seawater ball valve, the seawater desalination heat exchanger unit and the seawater flow regulating valve, the freshwater heat exchange pipeline and the cooling water user pipeline form an internal circulation. The present invention utilizes the design method of the split heat exchanger, by switching the opening and closing states of the heat exchanger, and matching the different heat transfer requirements of the cooling water system when the working conditions change, it can reduce the adjustment demand of the cooling user branch flow regulating valve, which is beneficial Flow adjustment distribution and flow-induced noise control of cooling water system.

Description

technical field [0001] The invention belongs to the technical field of a secondary circuit cooling water system, and in particular relates to a method for adjusting variable working conditions of a secondary circuit cooling water system. Background technique [0002] The cooling water system is an important part of the secondary circuit system of the nuclear power system. Its main function is to provide cooling water for the equipment that needs water cooling in the power system, and take out the heat generated by it to ensure the safe and normal operation of the power system. In addition, it is also used as the sea water source of the water generation system, and undertakes the function of supplying cooling water for the removal of active waste heat of the reactor. [0003] At present, the seawater system of ships under construction in my country adopts the decentralized multi-nozzle single-stage single-circuit cooling technology, that is, many users are cooled by single-st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63H21/38
CPCB63H21/38B63H21/383
Inventor 姚尧杨鹏举周雅杰李琼彭学创
Owner CHINA SHIP DEV & DESIGN CENT
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