Stepped steam generation device based on ultra-high temperature heat pump

Abstract

The invention relates to the technical field of heat energy power, in particular to a stepped steam generation device based on an ultrahigh-temperature heat pump, which comprises a high-temperature heat pump subsystem, a steam generation subsystem and a low-quality heat recovery subsystem, the high-temperature heat pump subsystem comprises a compressor, a motor, a high-temperature and high-pressure steam generator, a high-temperature heat regenerator, a medium-temperature and medium-pressure steam generator, a medium-temperature heat regenerator, a low-temperature heater, a low-temperature expansion machine, a low-temperature heat absorber and a medium-temperature heat absorber; the motor is connected with the compressor. Therefore, expansion work of a compressed gas working medium is effectively utilized, the temperature of an inlet of the low-temperature expansion machine is effectively reduced, the temperature of an outlet of the low-temperature expansion machine in the system is low, low-pressure steam condensation phase change heat absorption is achieved, low-temperature water is generated for storage and standby application, and multi-stage stepped energy storage is achieved. The steam turbine outlet dead steam energy is recycled to the maximum degree, and economic benefits are improved.

Description

technical field [0001] The invention relates to the technical field of thermal power, in particular to a stepped steam generating device based on an ultra-high temperature heat pump. Background technique [0002] Solar photovoltaics and wind power show significant intermittency, and their rising installed capacity will pose a huge challenge to the safety and stability of power grid operation. There is an urgent need for a technology that can improve the capacity of new energy consumption to reduce the massive construction of intermittent new energy. impact on the power grid. [0003] At the same time, steam is an intermediate process product generally required by industry. Medium-temperature and medium-pressure steam is widely used in equipment such as heat exchangers and steam boxes for heating and humidification, while high-temperature and high-pressure steam can be used to drive expanders to generate electricity, generating considerable economic benefits. and social bene...

AI Technical Summary

Problems solved by technology

The patent sets up high-temperature heat storage chambers, medium-temperature heat storage chambers, low-temperature heat storage chambers and other equipment to form a stepped heat storage device; in order to achieve gradient utilization of heat, but the system needs to be used in the process of using the traditional Substantial renovation and upgrading of the thermal power plant, the cost is extremely high

[0006] In summary, there are obviously inconveniences and defects in the actual use of the existing technology, so it is necessary to improve

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