Closed circulating cooling method for cogeneration unit

A cogeneration unit and closed cycle technology, which is applied to irreversible cycle compressors, refrigerators, compressors, etc., can solve the problems such as the inability to meet the steam extraction and heating conditions of cogeneration units, and reduce power, High environmental protection effect, the effect of compensating for the fluctuation of cold source temperature

Pending Publication Date: 2020-10-23
ZHEJIANG ZHENENG TECHN RES INST +2
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing closed circulating water system cannot meet the steam extraction and heating conditions of the cogeneration unit, and to provide a closed circulation cooling method for the cogeneration unit

Method used

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  • Closed circulating cooling method for cogeneration unit
  • Closed circulating cooling method for cogeneration unit

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specific Embodiment approach 1

[0017] Specific implementation mode one: the following combination figure 1 and figure 2 Describe this embodiment, a closed cycle cooling method for a cogeneration unit described in this embodiment, the closed cycle cooling method includes:

[0018] The steam thrust system is used to drive the compression refrigeration system, the cooling tower is removed, and urban reclaimed water and domestic water are introduced as cooling sources.

[0019] In the present invention, in order to realize the complete removal of the cooling water tower, the reclaimed water in the city and the domestic water in the community are used as cooling sources to cool the circulating water. As the driving force of the compression refrigeration system, the compression refrigeration system can compensate for the fluctuation of the temperature of the urban reclaimed water and the domestic water in the community due to the change of the ambient temperature. At the same time, a steam-propelled refrigerat...

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Abstract

The invention discloses a closed circulating cooling method for a cogeneration unit, belongs to the technical field of thermal power generating unit optimization and aims to solve the problem that anexisting closed circulating water system cannot meet the requirement for extracting steam to supply heat to the cogeneration unit. According to the method, a steam thrust system is adopted to push a compression refrigerating system, meanwhile a water cooling tower is removed, and urban water and domestic water are introduced to serve as a cold source. The closed circulating cooling method furthercomprises the step of arranging a heat exchange pipe row and a spray device in a heat exchange area of circulating water. According to the compression refrigerating system, extracted steam of the unitis adopted as condensation compression power, and the condensation compression power is adjusted in real time according to the steam amount of the steam thrust system. A steam source of the steam thrust system is introduced through a steam mother pipe. The method is applied to the cogeneration unit.

Description

technical field [0001] The invention relates to a closed cycle cooling method for a cogeneration unit of heat and power, and belongs to the technical field of thermal power unit optimization. Background technique [0002] In order to improve the heat supply capacity of thermal power units, a large number of coal-fired units have undergone combined heat and power transformation. Among them, the low-pressure cylinder cutting can significantly improve the unit's steam extraction and heat supply capacity. Taking a 300MW unit as an example, if the unit operates under the condition of removing the low-pressure cylinder heating, it can improve the unit’s heating capacity and electric peak-shaving capability, reduce the unit’s coal consumption rate for power generation, and greatly increase the operating range of the unit during the heating period. Compared with the original unit with a maximum heating capacity of 410t / h, the maximum heating capacity of the unit has increased by abo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28B9/06F25B1/00F25B27/00F25B49/02F01K17/02
CPCF01K17/02F25B1/00F25B27/00F25B49/02F28B9/06Y02E20/14
Inventor 吴春年顾伟飞徐新果赵卫正居国腾孙海龙石家魁姚坤万杰
Owner ZHEJIANG ZHENENG TECHN RES INST
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