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Stepped heating and supplying system sufficiently utilizing waste heat of power plant

A technology for cascade heating and waste heat from power plants

Inactive Publication Date: 2015-04-08
CEEC SHANXI ELECTRIC POWER EXPLORATION & DESIGN INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a cascaded heating heating system that fully utilizes the waste heat of the power plant, and solves the technical problems of the low utilization rate of the waste heat of the power plant and the inflexible adjustment of the heating temperature existing in the prior art

Method used

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  • Stepped heating and supplying system sufficiently utilizing waste heat of power plant

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Embodiment Construction

[0008] The present invention is described in detail below in conjunction with accompanying drawing:

[0009] A cascaded heating heating system that makes full use of the waste heat of a power plant, including a first unit steam turbine 1, a first unit exhaust device 2, a second unit steam turbine 6, and a second unit exhaust device 7, and the first unit exhaust device 2 passes through The direct air-cooled exhaust pipeline 4 of the first unit communicates with the air-cooled radiator 3 of the first unit, and the air-cooled radiator 3 of the first unit communicates with the heat on the exhaust device 2 of the first unit through the direct air-cooled exhaust steam condensate pipeline 5 of the first unit. The well is connected, the exhaust device 7 of the second unit communicates with the air-cooled radiator 8 of the second unit through the direct air-cooled exhaust pipeline 9 of the second unit, and the air-cooled radiator 8 of the second unit passes through the direct air-cooled...

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Abstract

The invention discloses a stepped heating and supplying system sufficiently utilizing waste heat of a power plant and solves the problems that waste heat of the power plant is utilized at low rate and heat supply temperature is inflexible in adjustment in the prior art. The stepped heating and supplying system is a system combining a high-backpressure condenser of an air cooling unit with dead steam recovery heat supply manners of a heat pump turbine, and dead steam recovery heat supply by a heat pump, the high-backpressure condenser and pure steam extraction in the prior art are changed. The stepped heating and supplying system has the advantages that a water heating system of a heat supply net is provided with three-stage heating, temperature gradient difference of water of the hot net during heating is reduced, and energy loss is reduced. The system can be constructed by stages, initial investment is lower, and heat supply adjustment is flexible. The stepped heating and supplying system is applicable to direct air cooling units of power plants and particularly suitable for direct air cooling units costing 300,000 or lower than 300,000.

Description

technical field [0001] The invention relates to a thermal power plant direct air-cooling unit high back pressure combined with heat pump heat supply system, which is a heat supply system that combines the high back pressure condenser of the air-cooling unit with the heat pump to recover exhaust steam from the steam turbine. Background technique [0002] The traditional heating method of cogeneration heating units is to use steam extraction for heating. Under the guidance of energy conservation and emission reduction policies, in recent years, more and more projects have used waste heat utilization equipment such as heat pumps and condensers to extract exhaust steam at the tail of steam turbines for heating. There are four commonly used heating methods at present: the first is steam extraction for heating, which uses steam turbines for heating and extracting steam, and heats the circulating water of the heating network through a steam-water heat exchanger, that is, a heating ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24D3/18
Inventor 王强刘冲吕建国王远清赵瑞平严鑫郝相俊丰玲王义军
Owner CEEC SHANXI ELECTRIC POWER EXPLORATION & DESIGN INST
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