Lunar surface stack and method for arranging lunar surface stack on lunar surface

Abstract

The embodiment of the invention relates to the field of nuclear reactors, in particular to a lunar surface reactor and a method for arranging the lunar surface reactor on the lunar surface. The lunar surface stack includes a core, a thermoelectric conversion element, and a shield. The reactor core is used for providing heat; the thermoelectric conversion element is used for converting heat of the reactor core into electric energy; the shielding body is arranged between the reactor core and the thermoelectric conversion element and is used for shielding the thermoelectric conversion element; wherein the reactor core and the shielding body are used for being arranged in a lunar pit, and the lunar surface reactor further comprises a plurality of first heat conduction pieces used for conducting heat in lunar soil on the radial outer side of the lunar pit to an external space. The lunar surface heap provided by the embodiment of the invention can prevent the temperature of lunar soil on the radial outer side of the lunar pit from rising to exceed the melting point, and is beneficial to ensuring the safety of the lunar surface heap.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of nuclear reactors, and specifically to a lunar surface reactor and a method for arranging a lunar surface reactor on the lunar surface. Background Art

[0002] The statements herein merely provide background information related to the present application and do not necessarily constitute prior art.

[0003] Establishing a lunar base on the lunar surface (i.e., the lunar surface) is conducive to better exploration of the moon. Nuclear power sources (i.e., lunar surface reactors) can be used to provide electricity for the lunar base. The safety of the lunar surface reactor is crucial to the sustainable development of the lunar base.

[0004] When arranging a lunar reactor on the lunar surface, the lunar reactor's built-in 4π omnidirectional shielding and lunar crater shielding can be used. Among them, the omnidirectional shielding is a built-in shielding body, and its layout is relatively simple. The main problem is that the mass of the shielding body is very large, which puts very high demands on the carrying capacity of the spacecraft. Lunar crater shielding refers to arranging the core in a pre-dug lunar crater, using the lunar soil to provide a large part of the shielding effect, so it can significantly reduce the mass of the lunar reactor's built-in shielding body, reducing the overall launch difficulty and cost of the lunar reactor.

[0005] However, there are still some problems with the safety of lunar reactors using lunar crater shielding. Summary of the invention

[0006] A brief overview of the present application is provided below in order to provide a basic understanding of certain aspects of the present application. It should be understood that this overview is not an exhaustive overview of the present application. It is not intended to identify the key or important parts of the present application, nor is it intended to limit the scope of the present application. Its purpose is merely to present certain concepts in a simplified form as a prelude to a more detailed description discussed later.

[0007] Embodiments of the present application provide a lunar surface pile and a method for arranging a lunar surface pile on the lunar surface.

[0008] In the first aspect, an embodiment of the present application provides a lunar surface reactor, which includes a core, a thermoelectric conversion element, and a shield. The core is used to provide heat; the thermoelectric conversion element is used to convert the heat of the core into electrical energy; the shield is arranged between the core and the thermoelectric conversion element, and is used to provide shielding for the thermoelectric conversion element; wherein the core and the shield are used to be arranged in a lunar crater, and the lunar surface reactor also includes: a plurality of first heat conducting members, which are used to conduct the heat in the lunar soil radially outside the lunar crater to the external space.

[0009] The lunar surface pile provided in the embodiment of the present application conducts the heat in the lunar soil radially outside the lunar crater to the external space through multiple first heat-conducting parts, which is beneficial to reducing the temperature of the lunar soil radially outside the lunar crater, thereby preventing the temperature of the lunar soil radially outside the lunar crater from rising to above the melting point, which is beneficial to ensuring the safety of the lunar surface pile.

[0010] On the second aspect, an embodiment of the present application also provides a method for arranging a lunar pile on the lunar surface, which may include: S1. Digging a lunar crater on the lunar surface, and drilling multiple first heat conductive members into the lunar soil around the lunar crater; S2. Arranging a second heat conductive member at the bottom of the lunar crater, and backfilling the lunar soil into the lunar crater to cover the second heat conductive member; S3. Arranging a core, a shielding body and other components of the lunar pile in the lunar crater. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Other objects and advantages of the present application will become apparent from the following description of the embodiments of the present application with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the present application.

[0012] Figure 1 It is a cross-sectional schematic diagram of a lunar surface stack arranged in a lunar crater provided by an embodiment of the present application.

[0013] Figure 2 From another perspective Figure 1 The cross-sectional schematic diagram shown is the layout of the lunar surface stack in the lunar crater.

[0014] Figure 3 It is a schematic structural diagram of a first heat conducting member provided in an embodiment of the present application.

[0015] Figure 4 yes Figure 3 A cross-sectional view of the first heat conducting member is shown.

[0016] Figure 5 It is a cross-sectional schematic diagram of a lunar surface stack arranged in a lunar crater provided by another embodiment of the present application.

[0017] Figure 6 From another perspective Figure 5 The cross-sectional schematic diagram shown is the layout of the lunar surface stack in the lunar crater.

[0018] Figure 7 It is a schematic structural diagram of a second heat conducting member provided in one embodiment of the present application.

[0019] Figure 8 yes Figure 7 A cross-sectional view of the second heat conducting member is shown.

[0020] Fig. 9 yes Figure 7 The schematic diagram of the structure of the second heat-conducting member after omitting the heat-conducting cylinder member is shown.

[0021] Description of reference numerals:

[0022] 100. Moon pile;

[0023] 10. core; 20. shielding body; 30. first heat-conducting member; 31. heat pipe; 32. radiation structure; 33. spiral blade; 34. matching part; 40. second heat-conducting member; 41. heat-conducting tube member; 42. heat-transfer connecting member; 43. supporting member;

[0024] 200. Lunar surface; 201. Lunar craters; 202. Lunar soil.

[0025] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding. DETAILED DESCRIPTION

[0026] Exemplary embodiments of the present application will be described below in conjunction with the accompanying drawings. For the sake of clarity and conciseness, not all features of the actual implementation are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the process of developing any such actual implementation in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and these constraints may vary from implementation to implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, it is only a routine task for those skilled in the art who benefit from the content of this application.

[0027] It is also necessary to explain here that, in order to avoid obscuring the present application due to unnecessary details, only the device structure and / or processing steps closely related to the scheme according to the present application are shown in the accompanying drawings, while other details that are not very relevant to the present application are omitted.

[0028] The inventor of the present application has found that for a lunar reactor shielded by lunar craters, neutrons and gamma rays in the core will escape from the core into the lunar soil and deposit heat in the lunar soil. Due to the extremely poor thermal conductivity of the lunar soil, in some cases, the heat deposited in the lunar soil may cause the maximum temperature of the lunar soil to exceed the melting point of the lunar soil, affecting the safety of the lunar reactor.

[0029] In order to solve the above problems, an embodiment of the present application provides a lunar surface pile.

[0030] See also Figure 1 and Figure 2 , Figure 1 is a cross-sectional schematic diagram of a lunar pile 100 arranged in a lunar crater 201 provided by an embodiment of the present application, Figure 2 Yes, from another angle. Figure 1The lunar pile 100 is shown as a cross-sectional schematic diagram arranged in a lunar crater 201. The lunar pile 100 provided in the embodiment of the present application may include a core 10, a thermoelectric conversion element, and a shield 20. The core 10 is used to provide heat; the thermoelectric conversion element is used to convert the heat of the core 10 into electrical energy; the shield 20 is arranged between the core 10 and the thermoelectric conversion element, and is used to provide shielding for the thermoelectric conversion element; wherein the core 10 and the shield 20 are used to be arranged in the lunar crater 201, and the lunar pile 100 also includes: a plurality of first heat conducting members 30, which are used to conduct the heat in the lunar soil 202 radially outside the lunar crater 201 to the external space.

[0031] The lunar pile 100 provided in the embodiment of the present application conducts the heat in the lunar soil 202 radially outside the lunar crater 201 to the external space through a plurality of first heat conducting members 30, which is conducive to reducing the temperature of the lunar soil 202 radially outside the lunar crater 201, thereby preventing the temperature of the lunar soil 202 radially outside the lunar crater 201 from rising to exceed the melting point, which is conducive to ensuring the safety of the lunar pile 100. Since the weight of the first heat conducting member 30 is much less than the weight of the shielding body, the addition of the first heat conducting member 30 will not significantly increase the mass of the lunar pile 100, and will not significantly increase the launch difficulty and launch cost of the lunar pile 100.

[0032] See also Figure 1 and Figure 2 In some embodiments, the lunar surface reactor 100 may further include: a second heat conducting member 40, which is used to be arranged in the lunar soil 202 below the core 10, so as to conduct the heat in the lunar soil 202 below the core 10 to the lunar soil 202 radially outside the lunar crater 201, so as to be conducted to the external space by the first heat conducting member 30. The inventor of the present application has found that the neutrons and gamma rays in the core 10 of the lunar surface reactor 100 will also escape from the bottom of the core 10 into the lunar soil 202 below the core 10. The embodiment of the present application arranges the second heat conducting member 40 in the lunar soil 202 below the core 10, so as to conduct the heat in the lunar soil 202 below the core 10 to the lunar soil 202 radially outside the lunar crater 201, so as to be conducted to the external space by the first heat conducting member 30, which is conducive to reducing the temperature of the lunar soil 202 below the core 10 and preventing the lunar soil 202 below the core 10 from melting.

[0033] In the related art, in order to prevent the neutrons and gamma rays of the core from escaping into the lunar soil and causing the temperature of the lunar soil to rise, a shielding body is set on the radial inner side and bottom of the core, but this will increase the overall mass of the shielding body of the lunar pile, increasing the difficulty and cost of launching the lunar pile. The embodiment of the present application allows the neutrons and gamma rays of the core 10 to escape into the lunar soil 202, and by setting the first heat conductor 30 and the second heat conductor 40, the heat in the lunar soil 202 is conducted to the external space of the lunar surface 200 to prevent the lunar soil 202 from melting. Since there is no need to set a shielding body on the radial inner side and bottom of the core 10, the embodiment of the present application can greatly reduce the mass of the lunar pile 100 while preventing the lunar soil 202 from melting and ensuring the safety of the lunar pile 100.

[0034] See also Figure 3 and Figure 4 , Figure 3 is a schematic structural diagram of a first heat conducting member 30 provided in an embodiment of the present application, Figure 4 yes Figure 3 The cross-sectional view of the first heat conductor 30 is shown. In some embodiments, the first heat conductor 30 includes a heat pipe 31 and a radiation structure 32 thermally connected to the heat pipe 31, wherein the heat pipe 31 is used to be inserted into the lunar soil 202 radially outside the lunar crater 201, and the radiation structure 32 is located above the lunar surface 200 to radiate the heat transferred by the heat pipe 31 to the external space. In such an embodiment, the heat in the lunar soil 202 radially outside the lunar crater 201 can be efficiently transferred to the radiation structure 32 through the heat pipe 31, and then the heat is radiated to the external space through the radiation structure 32 to reduce the temperature of the lunar soil 202 radially outside the lunar crater 201.

[0035] In some embodiments, the first heat conducting members 30 may be arranged at equal intervals along the circumference of the lunar crater 201 on the radial outer side of the lunar crater 201, so as to more evenly conduct heat from the lunar soil 202. There may be gaps between the radiation structures 32 to avoid interference between adjacent radiation structures 32.

[0036] In some embodiments, the surface of the radiation structure 32 may extend in a direction parallel to the tangent line of the crater 201 to maximize the radiation area of ​​the radiation structure 32 while avoiding interference between adjacent radiation structures 32 .

[0037] In some embodiments, the radiation structure 32 is, for example, a heat dissipation fin, which is, for example, an aluminum fin or a carbon-carbon fin.

[0038] See also Figure 5 and Figure 6 , Figure 5 is a cross-sectional schematic diagram of another embodiment of the present application showing that a lunar pile 100 is arranged in a lunar crater 201. Figure 6 From another perspective Figure 5The cross-sectional schematic diagram of the lunar surface reactor 100 arranged in the lunar crater 201 is shown. In some embodiments, multiple layers of first heat conducting members 30 may be arranged radially outside the lunar crater 201 to enhance the heat transfer capability of the first heat conducting members 30 to conduct heat in the lunar soil 202 radially outside the lunar crater 201 to the external space. Such an arrangement is particularly suitable for dissipating heat from the lunar soil 202 around the lunar crater 201 when the power of the reactor core 10 is relatively large.

[0039] In some embodiments, the working medium in the heat pipe 31 of the first heat conducting member 30 may be water. In some embodiments, the heat pipe 31 may be made of 316L stainless steel.

[0040] See also Figure 3 and Figure 4 In some embodiments, the bottom end of the heat pipe 31 forms a tip. In such an embodiment, since the lunar soil 202 is relatively hard, the above arrangement facilitates the heat pipe 31 to be inserted into the lunar soil 202 radially outside the lunar crater 201.

[0041] See also Figure 3 and Figure 4 In some embodiments, the first heat conductor 30 may further include a spiral blade 33 formed on the heat pipe 31 below the radiation structure 32, so that the heat pipe 31 can be inserted into the lunar soil 202 by rotation. In such an embodiment, the heat pipe 31 formed with the spiral blade 33 may have a screw-like shape, and the spiral blade 33 can be driven to rotate by rotating the heat pipe 31, thereby reducing the resistance of the heat pipe 31 inserted into the lunar soil 202.

[0042] See also Figure 3 and Figure 4 In some embodiments, the first heat conducting member 30 may further include a matching portion 34, which is disposed above the radiation structure 32 and is used to match with the rotation drive mechanism, so that the first heat conducting member 30 is driven by the rotation drive mechanism to rotate, so as to facilitate the insertion of the heat pipe 31 into the lunar soil 202. In such an embodiment, by providing the matching portion 34 to match with the rotation drive mechanism, the first heat conducting member 30 can be driven by the rotation drive mechanism to rotate so as to insert the heat pipe 31 into the lunar soil 202, thereby facilitating the efficiency of inserting the heat pipe 31 into the lunar soil 202.

[0043] In some embodiments, the rotary drive mechanism may be a drill or a lunar crater excavator. For example, the lunar crater excavator may have an excavation mode and a drilling mode. The lunar crater excavator can dig out the lunar crater 201 in the excavation mode, and can insert the heat pipe 31 into the lunar soil 202 in the drilling mode.

[0044] In some embodiments, the second heat conductor 40 may have a frame structure, and the lunar soil 202 may be filled in the gaps of the frame structure, so that the second heat conductor 40 can transfer heat while reducing its mass.

[0045] See also Figure 7 and Figure 8 , Figure 7 is a schematic structural diagram of a second heat conducting member 40 provided in one embodiment of the present application, Figure 8 yes Figure 7 The cross-sectional view of the second heat-conducting member 40 is shown. In some embodiments, the second heat-conducting member 40 may include: a coaxially arranged multi-layer heat-conducting cylinder 41 and a plurality of heat-conducting connectors 42 for heat-conductingly connecting the multi-layer heat-conducting cylinder 41. In such an embodiment, the heat of the lunar soil 202 far from the heat-conducting connector 42 can be transferred to the heat-conducting connector 42 through the heat-conducting cylinder 41, and the heat-conducting connector 42 transfers the heat to the heat-conducting cylinder 41 located at the radially outermost side, so as to transfer the heat to the lunar soil 202 radially outside the lunar crater 201.

[0046] In some embodiments, the heat transfer connector 42 is a heat pipe. In such an embodiment, the heat transfer connection of the multi-layer heat-conducting tube 41 by the heat pipe is conducive to enhancing the heat transfer capability of the second heat-conducting member 40 to transfer the heat in the lunar soil 202 below the core 10 to the lunar soil 202 radially outside the lunar crater 201.

[0047] See also Figure 8 In some embodiments, the second heat conducting member 40 includes multiple layers (e.g., 2 or 3 layers) of heat transfer connectors 42 arranged along the height direction of the crater 201, and each layer of heat transfer connectors 42 has multiple (e.g., 4, 5, 6 or 8, etc.) heat transfer connectors 42 evenly spaced in the radial direction. Figure 5 and Figure 6 In some embodiments, the number of layers of heat transfer connectors 42 can be increased to enhance the heat transfer capability of the second heat conductor 40 to transfer heat from the lunar soil 202 below the core 10 to the lunar soil 202 radially outside the lunar crater 201.

[0048] In some embodiments, when the heat transfer connector 42 is a heat pipe, the working medium in the heat transfer connector 42 may be water.

[0049] In some embodiments, the heat transfer connector 42 may be made of 316L stainless steel, and the heat conductive tube 41 may be made of 316L stainless steel or ODS copper.

[0050] See also Figure 8 and Fig. 9 , Fig. 9 yes Figure 7The schematic diagram of the structure of the second heat-conducting member 40 after omitting the heat-conducting cylinder member 41 is shown. In some embodiments, the second heat-conducting member 40 may further include: a support member 43, which is arranged on the radial inner side of the multi-layer heat-conducting cylinder member 41, each heat-conducting connecting member 42 is connected to the support member 43, and the heat-conducting connecting member 42 extends radially from the support member 43 to be heat-conductingly connected to the outermost heat-conducting cylinder member 41. In such an embodiment, the above arrangement is conducive to improving the overall mechanical strength of the second heat-conducting member 40 to prevent it from being crushed and deformed by the core 10 and the shield 20.

[0051] In some embodiments, support member 43 may be made of 316L stainless steel.

[0052] In some embodiments, the height of the pipe section of the heat pipe 31 with spiral blades 33 is greater than the sum of the height of the second heat conductor 40 and the height between the core 10 and the shielding body 20, so that after the second heat conductor 40 is arranged at the bottom of the crater 201 and the soil is backfilled, and after the core 10 and the shielding body 20 are arranged in the crater 201, the lower end of the heat pipe 31 is not lower than the lower end of the second heat conductor 40, so as to facilitate the first heat conductor 30 to carry out the heat conducted by the second heat conductor 40.

[0053] In some embodiments, the specific structure and size of the heat pipe 31 of each first heat conductor 30, the number of spiral blades 33 on the heat pipe 31 of each first heat conductor 30, and the number and size of the second heat conductors 40 can be determined according to the power parameters of the core 10.

[0054] An embodiment of the present application also provides a method for arranging a lunar stack 100 on the lunar surface 200, which may include: S1, digging a lunar crater 201 on the lunar surface 200, and drilling a plurality of first heat conductive members 30 into the lunar soil 202 around the lunar crater 201; S2, arranging a second heat conductive member 40 at the bottom of the lunar crater 201, and backfilling the lunar soil 202 into the lunar crater 201 to cover the second heat conductive member 40; S3, arranging the core 10, the shielding body 20 and the remaining components of the lunar stack 100 in the lunar crater 201.

[0055] The method provided in the embodiment of the present application can utilize multiple first heat-conducting members 30 to conduct heat in the lunar soil 202 radially outside the lunar crater 201 to the external space, which is beneficial to reducing the temperature of the lunar soil 202 radially outside the lunar crater 201, thereby preventing the temperature of the lunar soil 202 radially outside the lunar crater 201 from rising to above the melting point, which is beneficial to ensuring the safety of the lunar surface pile 100.

[0056] In some embodiments, the lower end of the first heat conductor 30 is lower than the lower end of the second heat conductor 40. The second heat conductor 40 conducts the heat in the lunar soil 202 below the core 10 to the lunar soil 202 radially outside thereof. Therefore, the embodiments of the present application facilitate the first heat conductor 30 to take out the heat conducted by the second heat conductor 40 through the above arrangement.

[0057] The following describes in detail the process of arranging the lunar stack 100 on the lunar surface 200 using the method provided in the embodiment of the present application.

[0058] A lunar crater 201 is excavated on the lunar surface 200 using the excavation mode of the lunar crater excavator; a plurality of first heat conductive members 30 are drilled into a predetermined depth in the lunar soil 202 around the lunar crater 201 using the drilling mode of the lunar crater excavator; a second heat conductive member 40 is arranged at the bottom of the lunar crater 201; the lunar soil 202 excavated when excavating the lunar crater 201 is backfilled to cover the second heat conductive member 40 and compacted; and a core 10, a shielding body 20 and other components of the lunar surface stack 100 are arranged in the lunar crater 201.

[0059] When the lunar surface reactor 100 is in operation, the heat in the lunar soil 202 deposited on the radially outer side of the lunar crater 201 is conducted out of the lunar surface 200 by the heat pipe 31 and conducted to the external space through the heat dissipation fins 32; the heat in the lunar soil 202 deposited below the core 10 is transferred to the lunar soil 202 on the radially outer side of the lunar crater 201 by the second heat conducting member 40, and then conducted out of the lunar surface 202 by the heat pipe 31 and conducted to the external space through the heat dissipation fins 32. Therefore, the temperature of the lunar soil 202 will not exceed the limit value, and there is no need to set a self-contained shield at the bottom and radially outer side of the core 10.

[0060] Regarding the embodiments of the present application, it should also be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other to obtain new embodiments.

[0061] The above are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. The protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A lunar pile, characterized in that: include: A core, the core being used to provide heat; A thermoelectric conversion element, used to convert the heat of the core into electrical energy; A shielding body, disposed between the core and the thermoelectric conversion element, for providing shielding for the thermoelectric conversion element; The core and the shielding body are used to be arranged in a lunar crater, and the lunar surface pile also includes: a plurality of first heat conducting members, which are used to conduct the heat in the lunar soil radially outside the lunar crater to the external space.

2. The lunar pile according to claim 1, characterized in that: The first heat conductive component includes a heat pipe and a radiation structure thermally connected to the heat pipe, wherein the heat pipe is used to be inserted into the lunar soil radially outside the crater, and the radiation structure is located above the lunar surface to radiate the heat transferred by the heat pipe to the external space.

3. The lunar pile according to claim 2, characterized in that: The bottom end of the heat pipe forms a tip.

4. The lunar pile according to claim 2, characterized in that: The first heat conductor also includes spiral blades formed on the heat pipe below the radiation structure to facilitate the heat pipe to be inserted into the lunar soil by rotation.

5. The lunar pile according to claim 3, characterized in that: The first heat conductive member also includes a mating portion, which is disposed above the radiation structure and is used to cooperate with the rotation driving mechanism so that the rotation driving mechanism drives the first heat conductive member to rotate, so as to facilitate the insertion of the heat pipe into the lunar soil.

6. The lunar pile according to any one of claims 1 to 5, characterized in that: Also includes: The second heat conductive member is used to be set in the lunar soil below the core to conduct the heat in the lunar soil below the core to the lunar soil radially outside the crater, and then conduct the heat to the external space by the first heat conductive member.

7. The lunar pile according to claim 6, characterized in that: The second heat conductive member has a frame structure, and the lunar soil is filled in the gaps of the frame structure.

8. The lunar pile according to claim 6, characterized in that: The second heat conducting member comprises: A coaxially arranged multi-layer heat-conducting cylinder and a plurality of heat-conducting connecting members for heat-conductingly connecting the multi-layer heat-conducting cylinder.

9. The lunar pile according to claim 8, characterized in that: The heat transfer connecting piece is a heat pipe.

10. The lunar pile according to claim 8, characterized in that: The second heat conducting member further comprises: The support member is arranged radially inside the multi-layer heat-conducting cylinder member, each of the heat-conducting connecting members is connected to the support member, and the heat-conducting connecting members radially extend from the support member to be heat-conductingly connected to the outermost heat-conducting cylinder member.

11. A method for arranging lunar piles on the lunar surface, characterized in that: include: S1, digging a lunar crater on the lunar surface, and drilling a plurality of first heat conducting members into the lunar soil around the lunar crater; S2, arranging a second heat-conducting member at the bottom of the lunar crater, and backfilling lunar soil into the lunar crater to cover the second heat-conducting member; S3. Arrange the core, shielding body and other components of the lunar surface reactor in the lunar crater.

12. The method according to claim 11, characterized in that The lower end of the first heat conducting member is lower than the lower end of the second heat conducting member.

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