Energy-saving thermoelectric decoupling system and operating method thereof

A heat network and heat exchanger technology, applied in heating systems, hot water central heating systems, heating methods, etc., can solve problems such as difficult to meet user needs, and achieve high energy utilization efficiency

Active Publication Date: 2018-08-03
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Limited by the constraints of thermal and electrical loads, when the electrical load rate of cogeneration units is too low, the thermal load is difficult to meet user needs

Method used

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  • Energy-saving thermoelectric decoupling system and operating method thereof
  • Energy-saving thermoelectric decoupling system and operating method thereof

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] like figure 1 As shown, an energy-saving thermoelectric decoupling system of the present invention includes a boiler 1, a steam turbine high-pressure cylinder 2, a steam turbine medium-low pressure cylinder 3, a condenser 4, a condensate pump 5, a low-pressure heater 6, and a deaerator 7 connected in sequence. , feed water pump 8 and high-pressure heater 9, including the high-pressure steam regulating valve 14 of the main steam injection system, the bypass regulating valve 15 of the main steam injection system, the high-pressure main steam ejector 10, and the low-pressure main steam ejector 11. The main steam injection system consists of a reheat steam injection system high-pressure steam regulating valve 16, a reheat steam injection system bypass regulating valve 17, a reheat steam high-pressure ejector 12, and a reheat steam ...

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Abstract

The invention provides an energy-saving thermoelectric decoupling system and an operating method thereof. The system comprises a boiler, a steam turbine high-pressure cylinder, a steam turbine mediumand low-pressure cylinder, a condenser, a condensate pump, a low-pressure heater, a deaerator, a water feed pump and a high-pressure heater which communicate in sequence, and further comprises a mainsteam injection system, a reheat steam injection system and a heat supply network heat exchanger. The main steam flow going into the heat supply network heat exchanger is adjusted through a main steaminjection system high-pressure steam regulation valve and a main steam injection system bypass regulation valve which communicate with an inlet of the main steam injection system, and meanwhile, thereheat steam flow going into the heat supply network heat exchanger is adjusted, so that the ratio of the main steam flow going into the heat supply network heat exchanger to the reheat steam flow going into the heat supply network heat exchanger is equal to the ratio of the main steam flow going into the steam turbine high-pressure cylinder from the boiler to the reheat steam flow going into thesteam turbine medium and low-pressure cylinder. The energy-saving thermoelectric decoupling system is simple in structure, little in investment and high in energy utilization efficiency.

Description

technical field [0001] The invention relates to the technical field of cogeneration of heat and power, in particular to an energy-saving thermoelectric decoupling system and an operating method. Background technique [0002] Combined heat and power generation is the joint production of heat and electricity by generating units, and using combined heat and power units to supply external heat is an effective means to improve fuel utilization efficiency. However, with the growth of my country's power generation installed capacity, especially the growth of renewable energy power generation installed capacity, the utilization hours and load rate of combined heat and power units are generally low. Limited by the constraints of thermal and electrical loads, when the electrical load rate of cogeneration units is too low, it is difficult for the thermal load to meet user needs. Therefore, it is an urgent problem to be solved in my country's thermal power industry to realize thermoele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K17/02F22G5/12F22B35/00F24D3/10
CPCF01K17/025F22B35/00F22G5/12F24D3/10
Inventor 刘明张旭伟赵永亮严俊杰种道彤
Owner XI AN JIAOTONG UNIV
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