Thermoelectric unit with peak regulation and heat storage functions

Abstract

The invention discloses a thermoelectric unit with peak regulation and heat storage functions. The thermoelectric unit comprises an intermediate pressure cylinder, a low pressure cylinder, a generator, a heat pump driving turbine, a compressor, a condenser, a throttle valve, an evaporator, a steam condenser, a steam-water heat exchanger, a primary hot network water return pipe, a heater, a primary hot network water supply pipe, a first heat storage device, a second heat storage device, a controller, a radiator and a purifier. According to the thermoelectric unit, the first heat storage device stores heat and releases heat through a heat storage material, the second heat storage device stores heat through a solar thermal collector, heat supply is guaranteed through switching of the controller, the peak regulation and heat storage functions are achieved, resources can be fully utilized, and the heat storage effect is guaranteed; the steam condenser and the evaporator are arranged on a steam outlet pipeline of the low pressure cylinder to recycle heat of waste steam, so that the utilization efficiency for heat of waste steam is high, and the heat supply cost is reduced; and the radiator and the purifier are arranged, so that exhaust gas exhausted by the steam outlet pipeline of the low pressure cylinder can be safely discharged into the external environment, and the environment is prevented from being polluted.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of thermoelectricity, and in particular relates to a thermoelectric unit with the function of peak regulation and heat storage. [0003] Background technique: [0004] This year, with the development of the domestic economy, generating units in the northern region of my country are dominated by combined heat and power generation while using "thermal power" operation, and the proportion of renewable energy in the energy structure in the northern region is gradually increasing. The overlap of the power generation load in time scale and space scale leads to the emergence of various problems and becomes more and more serious. Cogeneration of heat and power refers to the production mode in which the power plant not only produces electric energy, but also uses the steam done by the steam turbine generator to provide heat to the user, that is, the process of producing electricity and heat energy at the same t...

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Problems solved by technology

[0007] For this reason, the technical problem to be solved by the present invention is that in the prior art, the power generation of waste heat recovery technology used in thermal power units is simultaneously restricted by the main steam volume, air extraction parameters and flow, and exhaust steam parameters and flow. The limitations of the system are more prominent, and it is impossible to realize the function of peak-shaving heat storage while recovering the heat of exhaust steam, so a thermal power unit with peak-shaving heat storage function is proposed

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