Single-tank heat accumulating type energy storage combined heat and power system

Abstract

The invention provides a single-tank heat accumulating type energy storage combined heat and power system and relates to the technical field of heat and power supply. The single-tank heat accumulatingtype energy storage combined heat and power system aims at solving problems that the system cannot work due to the losing of a power supply, the usage of a double-tank energy storage equipment material is large, the cost of the double-tank energy storage equipment material is high, a thermal energy storage power station cannot supply heat when a power grid is in a non-peak period and a steam turbine generator unit does not work, and the efficiency of a thermal energy storage power station system is low. The single-tank heat accumulating type energy storage combined heat and power system comprises a medium storage tank, a cold medium pump, a heat medium pump, an electric heater, a gas-fuel heater, a vapor generator, an electrical heat tracing rod I, an electrical heat tracing rod II, a steam turbine high pressure cylinder, a reheater, a steam turbine medium-low pressure cylinder, a power generator, a steam condenser, a condensate pump, a heater I, a deaerator, a water-feeding pump, a heater II, a cooling tower, a heat user group and a heat supply side energy storage device. According to the single-tank heat accumulating type energy storage combined heat and power system, as an energy source is additionally arranged, the reliability is enhanced by 100%; the usage and cost of a single-medium storage tank are reduced by about 40%, and the floor area is reduced by about 30%; and the purpose of the single-tank heat accumulating type energy storage combined heat and power system is supplying heat and power.

Description

technical field [0001] The invention relates to the technical field of heat and electricity supply, and more specifically relates to a single-tank thermal energy storage cogeneration technology. Background technique [0002] Combined heat and power, also known as combined heat and power. It means that thermal power plants output heat energy to users while outputting electric energy to users through certain methods. Combined heat and power can greatly improve the thermal efficiency of thermal power plants. Because, in general condensing units, the exhaust steam loss of the steam turbine is very large. And cogeneration units, through some methods. After a part or all of the steam is passed through the steam turbine to do work, it is then output to the heat user. Reduce exhaust steam loss. Moreover, the cogeneration of heat and power solves the problem of central heating in cities and replaces the small boilers blooming everywhere. From another aspect, the overall energy ...

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Problems solved by technology

[0005] The present invention aims to solve the problem of the loss of the power supply system, the inability to operate, the low reliability, the large amount of materials used in the double-tank energy storage equipment, the high cost, the non-peak period of the power grid and the inability of the thermal energy storage power station to supply heat and heat storage when the steam turbine generator set is not in operation. The problem of low efficiency of power station system

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