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Thermoelectric decoupling system with heat storage function

A heat storage system and heat exchange system technology, which is applied in the direction of steam engine devices, machines/engines, mechanical equipment, etc., can solve the problems of not being able to meet the adjustment requirements of power generation and heat supply at the same time, and achieve improved flexibility and energy saving. row effect

Inactive Publication Date: 2019-01-04
HUANENG POWER INTERNATIONAL +1
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Problems solved by technology

[0003] The purpose of the present invention is to provide a thermoelectric decoupling system with heat storage, which solves the problem that the existing thermal power units with heat supply cannot meet the regulation requirements of power generation and heat supply at the same time

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  • Thermoelectric decoupling system with heat storage function

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] Such as figure 1 As shown, a thermoelectric decoupling system with heat storage provided by the present invention includes a high-temperature molten salt storage tank 1, a heat release pump 2, a first valve 3, a molten salt heating network water heater 4, and a low-temperature molten salt storage tank 5 , heat storage pump 6, molten salt heat storage heater 7, third valve 9, molten salt condensate heater 10, heat network water heater 11, fourth valve 12, fifth valve 13, condenser 15, condensate Water pump 16, sixth valve 17, deaerator 18, seventh valve 19, low-pressure heater group 20, low-pressure heat recovery steam extraction pipe 21, feed water pump 22, high-pressure heater group 23, high-pressure heat recovery steam extraction pipe 24, Boiler 25, steam turbine high pressure cylinder 26, reheat steam extraction valve 27, steam turbine medium press...

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Abstract

The invention provides a thermoelectric decoupling system with a heat storage function. The system comprises a fused salt heat storage system arranged on a reheat steam pipeline of a turbine unit, wherein a heat supply network water outlet of the fused salt heat storage system is connected with a heat supply network system through a heat exchange system. Since a reheat steam pipeline of the turbine unit is provided with a branch to be connected with a fused salt heat storage system, and heat produced when a turbine is operated at the high power generation load is stored through fused salt. When the turbine needs to be subjected to low-load peak regulation and the power generation power of the turbine is reduced, fused salt can release heat to supplement heat to the heat supply network so as to achieve thermoelectric decoupling. The problem that an existing thermal power generating unit with a heat supply function cannot meet the adjusting requirements of the generating capacity and theheat supply capacity at the same time is solved, and therefore the system has the important significance in improving flexibility of a heat supply unit, saving energy and reducing emission.

Description

technical field [0001] The invention belongs to the technical field of cogeneration of heat and power, and in particular relates to a thermoelectric decoupling system with heat storage Background technique [0002] Utilizing power plant waste heat (low-quality heat) for heat supply is an important means to improve the thermal efficiency and economy of power plants. In northern my country, power plants with heat supply account for a very large proportion of all thermal power plants. The waste heat of power plants is effectively used to save energy. Emission reductions make an important contribution, but combined heat and power plants are facing challenges with new developments. As the proportion of my country's wind power-based and unstable renewable energy power generation connected to the power grid is gradually increasing, the power grid needs thermal power plants to cooperate with peak-shaving demand is gradually increasing, so thermal power plants are experiencing an upsu...

Claims

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Application Information

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IPC IPC(8): F01K13/00F01K17/02F01D15/10F01K27/00
CPCF01D15/10F01K13/00F01K13/006F01K17/02F01K27/00
Inventor 尤景刚高科黄宇泓邢长清陈新明史绍平张波
Owner HUANENG POWER INTERNATIONAL
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