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Dual-mode multi-stage liquid metal magnetohydrodynamic generation system and working method thereof

A magnetic fluid power generation and liquid metal technology, applied in the direction of electrical components, electromechanical devices, etc., can solve the problems of insufficient utilization, high temperature, and excessive heat energy, etc., and achieve significant driving effects, increase power generation, and high power generation efficiency.

Active Publication Date: 2018-06-05
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in this scheme, the fluid still has a relatively high temperature after passing through the power generation channel, and more heat energy has not been fully utilized.

Method used

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  • Dual-mode multi-stage liquid metal magnetohydrodynamic generation system and working method thereof
  • Dual-mode multi-stage liquid metal magnetohydrodynamic generation system and working method thereof

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing, the present invention will be further explained.

[0029] Such as figure 1 The shown dual-mode multi-stage liquid metal magnetic fluid power generation system includes a zero-stage liquid metal self-evaporating and self-propelled power generation sub-system, a first-stage low-boiling point working fluid evaporation-driven power generation sub-system, and a condensation sub-system. The zero-stage liquid metal The metal self-evaporation and self-propelled power generation sub-system includes a liquid metal heated evaporator 1, a zero-stage magnetic fluid power generation channel 2 and a zero-stage MHD pump 9, and the first-stage low-boiling point working fluid evaporation-propelled power generation sub-system includes a primary mixer 3, A primary valve 4, a primary magnetic fluid power generation channel 5, and a primary separator 6, the condensation subsystem includes a condenser 7, a working medium pump 8; the outlet of th...

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Abstract

The invention discloses a dual-mode multi-stage liquid metal magnetohydrodynamic generation system and a working method thereof, belonging to the field of comprehensive utilization of energy sources.The working method comprises the following steps: with biomass energy or a nuclear reactor as a heat source, firstly heating certain liquid metal to realize partial vaporization to enable the liquid metal to flow through a power generation channel in a self-pushing manner to generate power; and after the power generation, mixing the liquid metal as a heat source with a low-boiling point working medium for evaporation to continuously push the liquid metal to flow through the next-stage power generation channel to generate power until the temperature of the liquid metal is decreased and the liquid metal is no longer suitable for being taken as the heat source of the low-boiling point working medium. By utilizing a dual-mode multi-stage liquid metal magnetohydrodynamic generation manner, various types of energy sources can be relatively adequately converted into high-grade electric energy by virtue of a gradient utilization strategy, so that an energy-saving and environment-friendly powergeneration technical route with good economy is formed, and the efficient utilization of the energy sources is realized.

Description

technical field [0001] The invention relates to a liquid metal magnetic fluid power generation system and its working method, in particular to a dual-mode multi-stage liquid metal magnetic fluid power generation system and its working method, belonging to the field of comprehensive energy utilization. Background technique [0002] There are two main forms of MHD generators, high-temperature plasma gas MHD generators and Liquid Metal MagnetoHydroDynamics (LMMHD for short) generators. The former uses high-temperature ionized conductive gas as the working medium and has high requirements on the temperature of the heat source. , usually above 3000°C. Compared with high-temperature ionized gas, liquid metal has the advantages of high conductivity, large specific heat, and relatively low temperature requirements for heat sources, so it can be applied to a wider range of heat sources. [0003] Since the liquid metal has a certain viscosity, it is necessary to generate bubbles in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K44/08
CPCH02K44/085
Inventor 鹿鹏郑星文黄护林
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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