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Flexible large-scale high-parameter heat supply system of thermal power plant

A technology for thermal power plants and heating systems, applied in heating systems, steam centralized heating systems, household heating, etc., to achieve flexible load changes, large-scale heating, and safe operation

Active Publication Date: 2021-03-16
CENT SOUTHERN CHINA ELECTRIC POWER DESIGN INST CHINA POWER ENG CONSULTING GROUP CORP
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Although the current heating technology scheme can achieve the purpose of heating and reducing unit load, it can only reduce part of the electric load of thermal power plants, and can only provide low-parameter steam

Method used

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  • Flexible large-scale high-parameter heat supply system of thermal power plant
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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] The present invention includes a thermal power generation system 1 and a high-low pressure steam combined heat exchange system 2. The high and low pressure steam combined heat exchange system 2 extracts high-pressure main steam and high-temperature reheat steam at the same time, and heats the heat supply water into a qualified one through a steam-water heat exchanger. The heating steam is turned into high-pressure condensed water and low-temperature reheated steam after cooling, which are respectively pressurized by the water pump and the steam compressor and sent back to the boiler of the thermal power generation system 1 to ensure the safety of the boiler turbine and realize the flexibility of external supply hot.

[0029] Such as figure 1 As shown, the large-scale high-parameter heating system of a thermal power plant uses high-press...

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Abstract

The invention relates to a flexible large-scale high-parameter heat supply system of a thermal power plant. The heat supply stem comprises a thermal power generation system and a high-low pressure steam combined heat exchange system. The thermal power generation system provides a heat source, and heat supply water is changed into heat supply steam through the high-low pressure steam combined heatexchange system, so that external heat supply of the thermal power plant is realized; according to the large-scale high-parameter heat supply system of the thermal power plant, a boiler and a steam turbine system are effectively decoupled, combined heat and power rigid coupling of a thermal power generating unit is broken, and the large-scale heat supply capacity under the low-load power generation working condition is guaranteed; and the high-low pressure steam combined heat exchange system can supply heat to feed water and heat the feed water into high-temperature and high-pressure heat supply steam, and the high-parameter steam supply capacity of the thermal power plant is improved.

Description

technical field [0001] The invention relates to the technical field of heat supply, in particular to a flexible large-scale high-parameter heat supply system of a thermal power plant. Background technique [0002] With the in-depth advancement of the power market reform process, the adjustment of the energy structure dominated by renewable energy is constantly forcing the transformation and upgrading of the existing coal power industry. With the continuous development and maturity of the power auxiliary service market and the establishment of the power spot market, thermal power plants will usher in development opportunities for the flexible transformation technology to adapt to the operation of the power market. [0003] For heating units, since the heating load in winter is generally large, it is necessary to maintain a certain boiler output, which is less involved in the low-load operation of the boiler. It is the problem of thermoelectric decoupling. How to reduce stea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K13/00F01K11/02F24D1/06
CPCF01K13/00F01K11/02F24D1/06
Inventor 祝培旺李峻仇晓龙桂本张春琳秦鹏
Owner CENT SOUTHERN CHINA ELECTRIC POWER DESIGN INST CHINA POWER ENG CONSULTING GROUP CORP
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