Solid electric heat accumulation device

Abstract

The invention relates to a solid electric heat accumulation device which comprises a thermal-insulation shell, a load-bearing wall, a resistance heater set, a heat accumulator, a thermal circulation system, a basic structure and a control system. The technical scheme is as follows: the resistance heater set directly powered by a power source is installed in each space established by the load-bearing wall in the thermal-insulation shell; the resistance heater set is formed by connecting a plurality of resistance heating units in series; the basic structure is composed of a cable trench, a load-bearing wall and a foundation; the heat accumulator is composed of a rectangular-solid assembly array; the rectangular-solid assembly is made of cast iron or refractory steel, the inside of which is provided with a heat accumulation material; and the thermal circulation system is a closed air duct formed by tightly connecting a circulating path, a heat exchanger, an air regulator and a fan component arranged on the external surface of the thermal-insulation shell, thereby completing the output of the heat energy to the heat user. Compared with the solid electric heat accumulation device manufactured by the prior art, the solid electric heat accumulation device provided by the invention can reduce the equipment volume, lowers the cost for electric heating components, and prevents the heat accumulator from being electrically charged.

Description

technical field [0001] The invention relates to the technical field of electric heat storage, in particular to a solid electric heat storage device directly powered by a voltage level of 66kV-500kV. The invention can convert electric energy into thermal energy and store it in a solid thermal storage body and can control the output of hot water, hot air and steam. Background technique [0002] In recent years, with the rapid development of the power industry, more and more nuclear power plant systems and wind power generation systems have emerged in China. With the expansion of installed capacity year by year, the contradiction of peak regulation in power grids has become increasingly prominent. The combined heat and power thermal power unit responsible for heating in winter in the north determines the power generation according to the heat demand for heating. When the heat demand for heating increases, it will lead to an increase in the on-grid electricity of the combin...

AI Technical Summary

Problems solved by technology

In order to balance the power grid, nuclear power plants and wind turbines have to be shut down, resulting in abandonment of wind and nuclear power, wasting a lot of clean energy; in order to use heat for production and living, heat source plants have to disperse and burn coal for heating, causing air pollution

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