Molten salt thermal storage heater

Abstract

A molten salt thermal storage heater comprises a tank body, a molten salt temperature measurement device, a molten salt adding hole, a molten salt liquid level measurement device and an atmosphere vent hole welded on the top of the tank body, wherein molten salt is disposed inside the tank body, a resistance heater auto-control system is disposed inside the molten salt, the resistance heater auto-control system comprises a high-sensitivity molten salt temperature detection component, a PLC programmable controller, frequency-converting control of a feed pump and an auto-switching component used in thermal storage and thermal discharge of a molten salt thermal storage system, a heat exchange coil pipe is disposed inside the molten salt of the tank body, and an inlet and an outlet of the heat exchange coil pipe respectively pass through the middle and the top of the tank body. The device provided by the invention perfectively places the heat exchange coil pipe inside a thermal storage medium and gets rid of necessary dependency on using air as a heat-transfer fluid, so as to realize direct heat exchange between the thermal storage medium and steam or hot water. In this way, a heat transfer coefficient and system thermal efficiency are increased to the optimal level, equipment volume is reduced greatly, equipment losses are also reduced, and social and economic benefits become better.

Description

technical field [0001] The invention relates to the technical field of electric heat storage, in particular to a molten salt heat storage heater. Background technique [0002] With the rapid development of my country's national economy and the improvement of people's living standards, seasonal power shortages have occurred in many areas of the country. In order to meet the needs of the national economy, my country's electric power industry is also developing rapidly, continuously increasing installed capacity, and continuously improving the operating efficiency and management level of the power grid. However, with the continuous increase of electricity consumption in various places, the peak value of electricity consumption is constantly being refreshed. At the same time, the peak-to-valley difference of the power grid is also widening, which not only leads to a decrease in power grid efficiency and loss of the power grid, but also seriously threatens the safety of the powe...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a molten salt heat storage heater to solve the problems of low heat transfer coefficient and low heat storage efficiency in the prior art

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