阅读说明：本技术 月球温差磁悬浮发电系统 (Lunar temperature difference magnetic suspension power generation system ) 是由 谢和平 马举昌 孙立成 周韬 阮禾 李存宝 朱建波 高明忠 于 2020-05-08 设计创作，主要内容包括：本发明涉及月球温差磁悬浮发电系统,用于为月球上的探测基地供电。其包括磁悬浮发电机,气体发生器,膨胀机,表面换热器以及工质泵。利用埋入月壤中的热管将月壤中的热量传入发生器将循环工质加热蒸发,蒸发后的工质在膨胀机中膨胀做功并驱动发电机发电。做功后的循环工质在表面换热器中与月面通过辐射换热冷凝成液体,后经工质泵加压后回流到发生器再次吸收热管热量进行循环发电。本发明通过将膨胀机、磁悬浮发电机、工质泵、发生器等装置一体化布置在保温箱体内,利用月壤与月面之间的温差进行发电,解决了月夜无太阳光照时探月基地能源供应的问题。(The invention relates to a lunar temperature difference magnetic suspension power generation system which is used for supplying power to a detection base on the moon. The magnetic suspension power generation system comprises a magnetic suspension power generator, a gas generator, an expansion machine, a surface heat exchanger and a working medium pump. The heat pipe embedded in the lunar soil is used for transferring the heat in the lunar soil into the generator to heat and evaporate the circulating working medium, and the evaporated working medium expands in the expander to do work and drive the generator to generate power. The working-done circulating working medium is condensed into liquid through radiation heat exchange with the lunar surface in the surface heat exchanger, and then the liquid is pressurized by the working medium pump and flows back to the generator to absorb heat of the heat pipe again for circulating power generation. The invention integrally arranges the expansion machine, the magnetic suspension generator, the working medium pump, the generator and other devices in the heat preservation box body, and utilizes the temperature difference between lunar soil and the lunar surface to generate electricity, thereby solving the problem of energy supply of the lunar exploration base when no sunlight is irradiated at the night.)

1. Moon temperature difference magnetic suspension power generation system, its characterized in that includes:

a magnetic suspension generator; and

a gas generating device comprising a generator and at least one heat pipe;

an expander, an inlet end of the expander being connected to an outlet end of the generator;

the inlet end of the surface heat exchanger is connected with the outlet end of the expander;

the inlet end of the working medium pump is connected with the outlet end of the surface heat exchanger; and the outlet end of the working medium pump is connected with the inlet end of the generator.

2. The lunar temperature differential magnetic levitation power generation system as recited in claim 1, wherein the heat pipe comprises an evaporation section, a middle section and a condensation section which are connected in sequence, the evaporation section is arranged in lunar soil, and the condensation section is arranged in the generator.

3. The lunar thermo-magnetic levitation power generation system as recited in claim 2, wherein the heat pipe is vertically arranged.

4. The lunar thermo-magnetic levitation power generation system as recited in claim 3, wherein when there is more than one heat pipe, the heat pipes are arranged in a matrix.

5. The lunar thermo-magnetic levitation power generation system as recited in claim 1, further comprising a box, wherein the expander, the generator and the working medium pump are arranged in the box, and the generator is arranged in the box or buried in lunar soil.

6. The lunar thermo-magnetic levitation power generation system as recited in claim 4, wherein the surface heat exchanger is disposed outside the tank.

7. The lunar thermo-magnetic levitation power generation system as recited in claim 2, wherein the heat pipe evaporation section is disposed in the lunar soil constant temperature layer.

8. The lunar thermo-magnetic levitation power generation system as recited in claim 1, wherein the bearings of the expander and the magnetic levitation generator are magnetic levitation bearings.

9. The lunar thermo-magnetic levitation power generation system as recited in claim 5, wherein the box body is made of a thermal insulation material.

Technical Field

The invention relates to the technical field of thermoelectric power generation, in particular to a lunar thermoelectric magnetic suspension power generation system.

Background

At present, the energy supply of the lunar exploration project mainly depends on a solar cell and a small radioisotope thermoelectric power generation technology, but as the day and night time of the moon respectively reaches about 15 earth days, along with the continuous expansion of the lunar exploration project scale, the solar cell or the small radioisotope thermoelectric power generation is only depended on to hardly provide sufficient energy supply for lunar exploration activities at night, especially for a lunar base.

Accordingly, the prior art is yet to be improved and developed.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a lunar temperature difference magnetic suspension power generation system, and aims to solve the problem that the solar cell and the small radioisotope temperature difference power generation technology are difficult to provide sufficient energy supply for lunar night lunar exploration activities, particularly a lunar base in the existing lunar exploration projects and future lunar exploration bases.

The technical scheme adopted by the invention for solving the technical problems is as follows:

moon temperature difference magnetic suspension power generation system, wherein, include:

a magnetic suspension generator; and

a gas generating device comprising a generator and at least one heat pipe;

an expander, an inlet end of the expander being connected to an outlet end of the generator;

the inlet end of the surface heat exchanger is connected with the outlet end of the expander;

the inlet end of the working medium pump is connected with the outlet end of the surface heat exchanger; and the outlet end of the working medium pump is connected with the inlet end of the generator.

Preferably, the heat pipe comprises an evaporation section, a middle section and a condensation section which are sequentially connected, the evaporation section is arranged in lunar soil, the condensation section is arranged in the generator, and specifically, the heat pipe is a straight pipe, the upper part of the straight pipe is a heat pipe condensation section, and the heat pipe condensation section is arranged in the generator; the lower part of the straight pipe is a heat pipe evaporation section which is arranged in the lunar soil constant temperature layer.

Preferably, when there is more than one heat pipe, the heat pipes are arranged in a matrix.

The expansion machine, the magnetic suspension generator and the working medium pump are arranged in the box body, and the generator is arranged in the box body or buried in lunar soil.

Preferably, the surface heat exchanger is disposed outside the case.

Preferably, the heat pipe evaporation section is arranged in the lunar soil constant temperature layer.

Preferably, the bearings of the expander and the generator are magnetic bearings.

Preferably, the box body is made of heat preservation materials.

The invention has the following beneficial effects:

1. the method utilizes the acquired lunar soil temperature distribution rule, and utilizes the temperature difference between the lunar surface and the lunar soil below to generate electricity during the lunar night, so that the problem of energy supply of lunar exploration equipment, particularly future lunar exploration bases when the lunar night is not irradiated by sunlight can be solved;

2. the invention adopts the magnetic suspension generator and the expansion machine, reduces the mechanical abrasion between the rotor and the rotating shaft during the temperature difference power generation, and is beneficial to improving the power generation efficiency of the generator.

Drawings

Fig. 1 is a block diagram of a power generation system according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of a single heat pipe structure according to the present invention.

FIG. 3 is a schematic diagram of an arrangement of the present invention employing multiple heat pipes.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in FIG. 1, the invention discloses a lunar temperature difference magnetic suspension power generation system, which is composed of a heat pipe 10, an expander 20, a magnetic suspension generator 30, a surface heat exchanger 40, a working medium pump 50 and a generator 60.

Specifically, the lunar thermo-magnetic levitation power generation system provided by the invention is characterized in that the heat pipe 10 and the generator 60 form a gas generation device, and a part of the heat pipe 10 is buried in lunar soil. The inlet end of the expander 20 is connected to the outlet end of the generator 60; the inlet end of the surface heat exchanger 40 is connected with the outlet end of the expander 20; the inlet end of the working medium pump 50 is connected with the outlet end of the surface heat exchanger 40; the outlet end of the working medium pump 50 is connected with the inlet end of the generator 60; the magnetic levitation generator is connected with the expander to transmit torque. It should be noted that the inlet end and the outlet end are defined and divided for the convenience of expression, and are not intended to be limiting and do not represent a special meaning.

The technical principle involved in the invention is as follows: during the night, the heat pipe embedded in the lunar soil is utilized to transfer the heat of the lunar soil into the generator for heating and evaporating the working medium, and the evaporated working medium expands in the expander to do work and drive the magnetic suspension generator to generate power. The working-done circulating working medium is condensed with the lunar surface through radiation heat exchange in the surface heat exchanger, and then is pressurized by the working medium pump and flows back to the generator to absorb heat of the heat pipe again for circulating power generation.

Please refer to fig. 2, which is a schematic diagram of a single heat pipe structure. The heat pipe of fig. 2 includes a condensation section 121, an intermediate section 111 and an evaporation section 131, and a certain amount of heat transfer working medium is filled in the heat pipe. The evaporation section 131 at the lower end of the heat pipe 10 is embedded in the lunar soil constant temperature layer, the condensation section 121 at the upper end of the heat pipe 10 is arranged in the generator, and the upper end and the lower end of the middle section 111 of the heat pipe 10 are respectively connected with the condensation section 121 and the evaporation section 131. The heat transfer working medium absorbs heat in the lunar soil constant temperature layer in the evaporation section 131 to evaporate, the low-density gaseous heat transfer working medium rises under the action of buoyancy, the heat is transferred to the power generation working medium in the condensation section 121 after passing through the middle section 111 to be condensed into a liquid working medium, and the liquid heat transfer working medium returns to the evaporation section 131 under the action of lunar gravity to complete self-circulation.

Referring to fig. 2, in one or more embodiments, the condensing section 121 and the evaporating section 131 are made of heat conductive materials, so as to enhance the evaporation and condensation processes of the heat pipe; the intermediate section 111 is made of a thermal insulation material, which reduces heat loss of the heat pipe in low-temperature shallow lunar soil.

Referring to fig. 3, in some embodiments, in order to obtain more heat, the heat pipes may be provided as a plurality of heat pipes, that is, a plurality of heat pipes may be used in combination.

In one or more embodiments, since the temperature difference between the moon day and the moon night environment is large, in order to protect the power generation equipment, the power generation system is further provided with a box body (not shown in the figure), and the box body is made of a heat-insulating and cold-insulating material which is light in weight, non-toxic, stable in chemical performance and small in heat conductivity coefficient and is suitable for extreme temperature conditions (such as-200 to 400 ℃). The expansion machine, the magnetic suspension generator, the working medium pump and the generator are arranged in the box body, and the box body is internally insulated to ensure the normal operation of each device arranged in the box body.

Further, the surface heat exchanger is arranged outside the box body, the working medium coming out of the expansion machine and the lunar surface environment are condensed by the surface heat exchanger through radiation heat exchange, and the cooled liquid working medium is pressurized and flows back to the generator through the working medium pump to perform circulating power generation.

In one or more embodiments, a bottom end of the vertical portion of the heat pipe is disposed in a constant temperature layer of the lunar soil.

Particularly, as the existing research shows that the fluctuation range of the temperature of the lunar soil surface layer is large and the temperature is low during the evening, which is not beneficial to obtaining stable heat and large temperature difference, the bottom end of the heat pipe is buried in the lunar soil constant temperature layer, so that the heat pipe can be ensured to stably absorb the heat in the lunar soil and the generator can efficiently and stably work.

In one or more embodiments, the generator is a magnetic levitation generator and the expander is a magnetic levitation expander. The magnetic suspension bearing has small friction resistance and high rotating speed, and is favorable for improving the generating efficiency.

In summary, the present invention provides a power generation system, specifically a lunar temperature difference magnetic levitation power generation system, which comprises a magnetic levitation generator, a gas generator, an expander, a surface heat exchanger and a working medium pump. The heat pipe embedded in the lunar soil is used for transferring the heat in the lunar soil into the generator for heat exchange, the circulating working medium is heated and evaporated, the evaporated working medium enters the expander, and the expander is pushed to rotate under the action of the pressure difference between the inlet and the outlet, so that the magnetic suspension generator is driven to generate electricity. The working-done circulating working medium is subjected to radiation heat exchange with the lunar surface in the surface heat exchanger for condensation, and then the working medium is pressurized by the working medium pump and flows back to the generator to absorb heat of the heat pipe again for cyclic power generation. The heat pipe, the expansion machine, the magnetic suspension generator, the working medium pump, the generator and other devices are integrally arranged in the heat insulation box body, and the temperature difference between lunar soil and the lunar surface is utilized to generate electricity, so that the problem of energy supply of lunar exploration equipment, particularly future lunar exploration bases, when no sunlight is emitted at night can be solved.

It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.