Lunar-based thermoelectric power generation drilling tool

Abstract

The invention is suitable for the technical field of drilling tools, and provides a moon-based thermoelectric power generation drilling tool. The moon-based thermoelectric power generation drilling tool comprises a drilling rod, a heat conduction rod and a thermoelectric power generation module. The drill rod is provided with a rod inner cavity extending in the axial direction of the drill rod. The heat-conducting rod is positioned in the rod inner cavity; the thermoelectric power generation module is arranged between the inner wall of the rod inner cavity and the outer surface of the heat conduction rod, and heat transfer is conducted between the drill rod and the heat conduction rod through the thermoelectric power generation module. According to the moon-based thermoelectric power generation drilling tool, by means of the temperature difference between lunar soil and the lunar surface in the daytime and the temperature difference between lunar soil and the lunar surface at night, the thermoelectric power generation module can generate power in the daytime and at night, and therefore continuous generation of electric energy is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of drilling tools, and more specifically, to a moon-based temperature difference power generation drilling tool. Background Art

[0002] Due to the special environment on the lunar surface, there is a lack of common energy forms on Earth, such as atmosphere, water flow, ocean resources and biological fossils, so the types and quantities of energy available on the moon are extremely limited. At present, the main sources of energy on the moon include solar energy, geothermal energy and nuclear energy (nuclear fusion and nuclear fission). However, from the perspective of practical application, the main energy sources currently relied on in lunar exploration are only solar energy and radioisotope thermoelectric generators (nuclear batteries). Among them, solar energy cannot be used on the moon night and its continuous power supply capacity is insufficient.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a moon-based temperature difference power generation drilling tool, aiming to solve the technical problem of insufficient continuous power generation capacity of solar energy in related technologies.

[0005] To achieve the above purpose, the technical solution adopted in this application is:

[0006] The present application provides a moon-based thermoelectric power generation drilling tool, which includes: a drill rod, a heat conducting rod and a thermoelectric power generation module;

[0007] The drill rod has a rod inner cavity extending along its own axial direction;

[0008] The heat conducting rod is located in the inner cavity of the rod;

[0009] The temperature difference power generation module is arranged between the inner wall of the rod inner cavity and the outer surface of the heat conducting rod, and heat is transferred between the drill rod and the heat conducting rod through the temperature difference power generation module.

[0010] In a possible design, the lunar-based temperature difference power generation drilling tool further includes a heat exchange plate, and the heat conducting rod is connected to the heat exchange plate.

[0011] In a possible design, the heat conducting rod comprises an inner section and an extended section, the inner section and the extended section are fixedly connected, the inner section is located in the inner cavity of the rod, and the extended section is located outside the inner cavity of the rod;

[0012] There are multiple heat exchange plates, and the multiple heat exchange plates are distributed along the circumference of the extended section.

[0013] In a possible design, the thermoelectric power generation module includes a supporting inner tube and a plurality of thermoelectric power generation sheets, and the thermoelectric power generation sheets are mounted on the supporting inner tube;

[0014] One end surface of the thermoelectric power generation sheet is in contact with the inner wall of the drill rod, and the other end surface opposite to the thermoelectric power generation sheet is in contact with the outer surface of the heat conducting rod.

[0015] In a possible design, the lunar-based temperature difference power generation drilling tool further includes a thermal insulation pad, which is located at the bottom of the rod inner cavity, and one end of the heat conductive rod abuts against the thermal insulation pad.

[0016] In a possible design, the lunar-based temperature difference power generation drilling tool further includes a heat-insulating connector, which is fixedly connected to the drill pipe, and the heat-conducting rod passes through the heat-insulating connector.

[0017] In a possible design, the thermal insulation connector is threadedly connected to the drill rod.

[0018] In a possible design, the thermal insulation connector is made of polytetrafluoroethylene or polyamide.

[0019] In a possible design, the outer surface of the drill rod has spiral grooves for chip removal.

[0020] In a possible design, the heat exchange plate is made of copper; the surface of the heat exchange plate has a coating, and the coating is made of graphite coating, silicon carbide coating or aluminum nitride coating.

[0021] The main beneficial effects of the monthly-based temperature difference power generation drilling tool provided by this application are:

[0022] The lunar-based thermoelectric power generation drill provided in the present application drills a drill rod into the lunar soil, and a thermoelectric power generation module is arranged between the drill rod and the heat conducting rod. In this way, the temperature difference between the lunar soil and the lunar surface during the day and at night is utilized to enable the thermoelectric power generation module to generate electricity both during the day and at night, thereby realizing the continuous generation of electrical energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a structural schematic diagram of a moon-based temperature difference power generation drilling tool provided in an embodiment of the present application;

[0025] Figure 2This is a structural schematic diagram of the moon-based temperature difference power generation drilling tool provided in an embodiment of the present application from another perspective;

[0026] Figure 3 This is a front view of the moon-based temperature difference power generation drilling tool provided in an embodiment of the present application;

[0027] Figure 4 is along Figure 3 Sectional view of AA in the middle;

[0028] Figure 5 yes Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0029] Figure 6 yes Figure 4 A partial enlarged schematic diagram of point C in the middle;

[0030] Figure 7 It is a cross-sectional view of another form of a moon-based temperature difference power generation drilling tool provided in an embodiment of the present application;

[0031] Figure 8 It is a cross-sectional view of another form of moon-based temperature difference power generation drilling tool provided in an embodiment of the present application.

[0032] Description of main reference numerals:

[0033] 101. Drill rod; 102. Heat conducting rod; 103. Temperature difference power generation module; 104. Rod cavity; 105. Internal section; 106. Extended section; 107. Heat exchange plate; 108. Support plate; 109. Screw section; 110. Heat insulation connector; 111. First sub-section; 112. Second sub-section; 113. Spiral groove; 114. Support inner tube; 115. Temperature difference power generation sheet; 116. First heat exchange end face; 117. Second heat exchange end face; 118. First inner tube; 119. Second inner tube; 120. Heat insulation pad; 121. Rod body; 122. Drill bit; 123. Sub-plate; 124. Hinge. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0036] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] The main sources of energy on the moon include solar energy, geothermal energy and nuclear energy (nuclear fusion and nuclear fission). However, from the perspective of practical application, the main energy sources currently relied on in lunar exploration are only solar energy and radioisotope thermoelectric generators (nuclear batteries). Among them, solar energy cannot be used on the lunar night and its continuous power supply capacity is insufficient. Although nuclear batteries can continuously provide energy during the lunar day and night, their output power is low and can only meet the use requirements of low-power scientific research instruments, and cannot meet the high energy consumption requirements of lunar base construction and operation.

[0039] To this end, the present application provides a monthly-based temperature difference power generation drilling tool to achieve in-situ power generation, thereby solving the problems in the relevant technology; a detailed description is given below in conjunction with specific drawings and embodiments.

[0040] Combination Figures 1 to 4As shown, in one or more embodiments, the present application provides a lunar-based thermoelectric power generation drill, which can be applied to power acquisition and energy collection on the moon and terrestrial planets with shallow constant temperature layers, as well as lunar exploration instruments and planetary exploration instruments, and power supply for lunar and planetary human bases. The lunar-based thermoelectric power generation drill includes: a drill rod 101, a heat conducting rod 102, and a thermoelectric power generation module 103; the drill rod 101 has a rod inner cavity 104 extending along its own axial direction; the heat conducting rod 102 is located in the rod inner cavity 104; the thermoelectric power generation module 103 is arranged between the inner wall of the rod inner cavity 104 and the outer surface of the heat conducting rod 102, and heat is transferred between the drill rod 101 and the heat conducting rod 102 through the thermoelectric power generation module 103. Since there is a constant temperature layer 1 meter below the lunar surface (referred to as the lunar surface), the temperature is constant at about -20°C, while the lunar surface temperature is +127°C during the lunar day and -183°C during the lunar night, there is always a temperature difference between the constant temperature layer and the lunar surface; the lunar-based temperature difference power generation drill in the embodiment of the present application utilizes this temperature difference to achieve continuous power generation. When in use, the drill rod 101 is drilled into a certain depth in the lunar soil, and a temperature difference power generation module 103 is arranged between the drill rod 101 and the heat conducting rod 102. In this way, the temperature difference between the lunar soil and the lunar surface during the day and the temperature difference at night are utilized to achieve the temperature difference power generation module 103 to generate electricity both during the day and at night, thereby achieving continuous generation of electric energy; and the use of multiple lunar-based temperature difference power generation drills can form a power generation system to increase the power generation power, thereby meeting the high energy consumption requirements of the construction and operation of the lunar base.

[0041] Combination Figure 1 and Figure 2 As shown, in some embodiments, the lunar-based thermoelectric power generation drilling tool further includes a heat exchange plate 107, and the heat conducting rod 102 is connected to the heat exchange plate 107, so that the heat exchange plate 107 can absorb heat during the day and dissipate heat at night; since the heat exchange plate 107 has a certain area, it can absorb heat faster during the day, thereby improving the heat absorption efficiency; and it can dissipate heat faster at night, thereby improving the heat dissipation efficiency. The heat exchange plate 107 has two working modes: a daytime working mode and a nighttime working mode: in the daytime working mode, the heat exchange plate 107 is equivalent to a heat collecting plate, which can absorb solar radiation heat to the maximum extent, and transfer it to the thermoelectric power generation module 103 through the heat conducting rod 102, and then transfer it to the drill pipe 101 through the thermoelectric power generation module 103. In the night working mode, the heat exchange plate 107 is equivalent to a heat sink. The heat in the lunar soil is transferred to the drill rod 101, and then to the heat conducting rod 102 via the temperature difference power generation module 103, and finally to the heat exchange plate 107 via the heat conducting rod 102, so that the heat conducted from the drill rod 101 is quickly dissipated into the surrounding environment.

[0042] See also Figure 4As shown, in some embodiments, the heat conducting rod 102 includes an inner section 105 and an extended section 106, the inner section 105 and the extended section 106 are fixedly connected, the inner section 105 is located in the rod inner cavity 104, and the extended section 106 is located outside the rod inner cavity 104; there are multiple heat exchange plates 107, and the multiple heat exchange plates 107 are distributed along the circumference of the extended section 106. The use of multiple heat exchange plates 107 is conducive to improving the heat absorption efficiency and heat dissipation efficiency. Exemplarily, the multiple heat exchange plates 107 are radially distributed around the circumference of the extended section 106. The heat exchange plates 107 are fixedly connected to the extended section 106. See Figure 7 As shown, the inner section 105 and the extended section 106 may be an integral structure, that is, made by an integral molding process; or, see Figure 4 As shown, the inner section 105 and the extension section 106 are separate structures, and the inner section 105 and the extension section 106 are fixedly connected by threaded connection or snap-fit ​​connection. When the inner section 105 and the extension section 106 are separate structures, before drilling the lunar-based thermoelectric power generation drill into the lunar soil, the heat exchange plate 107 and the extension section 106 can be disassembled first, and then the lunar-based thermoelectric power generation drill can be drilled into the lunar soil using a drilling rig, and finally the heat exchange plate 107 and the extension section 106 can be reinstalled. Figure 7 As shown, when the inner section 105 and the extension section 106 are an integrated structure, the operation can be performed by entering the extension section 106 to drill the lunar-based thermoelectric power generation drill into the lunar soil; for example, the extension section 106 has a screwing section 109, and the cross section of the screwing section 109 is polygonal, such as a hexagon, so that the lunar-based thermoelectric power generation drill can be matched with the inner hexagon of the drilling rig to achieve the matching of the lunar-based thermoelectric power generation drill. It can be understood that the screwing section 109 can also be connected with a magnetic structure or a buckle to ensure the stability of the matching with the drilling rig and prevent the lunar-based thermoelectric power generation drill from being separated from the drilling rig during the drilling process. The lunar-based thermoelectric power generation drill also includes a support plate 108, and the heat exchange plate 107 is connected to the support plate 108. The support plate 108 is sleeved on the extension section 106 and fixedly connected to the extension section 106, so that the support plate 108 is used to provide support for the heat exchange plate 107.

[0043] See also Figure 8As shown, in other embodiments, the heat exchange plate 107 can be designed to be foldable to reduce the volume share, for example, the heat exchange plate 107 is distributed with multiple sub-plates 123, and the multiple sub-plates 123 are hinged, such as connected by hinges 124; when the heat exchange plate 107 is unfolded, the multiple sub-plates 123 are sequentially connected along the radial direction of the guide rod 102; this is convenient for storage before use, and it can be unfolded when used; and when the heat exchange plate is a foldable heat exchange plate, the hinge 124 used between the multiple sub-plates 123 of the foldable heat exchange plate can be a hinge with a spring, so as to realize the automatic unfolding of the foldable heat exchange plate. It can be understood that in order to ensure the heat transfer effect between two adjacent sub-plates 123, a metal film can be fixed between the two adjacent sub-plates, that is, the metal film is respectively attached to the two adjacent sub-plates; the metal film can be bent to facilitate the folding of the heat exchange plate. It should be noted that when the heat exchange plate is a foldable heat exchange plate, the monthly base temperature difference power generation drilling tool may not be provided with a support plate. When the lunar-based temperature difference power generation drilling tool is provided with a support plate, the heat exchange plate and the support plate can be detachably fixed by screws or snap-fitting. Of course, the heat exchange plate 107 and the support plate 108 may not be fixed, and the support plate 108 only plays a supporting role.

[0044] In some embodiments, the heat exchange plate 107 is made of copper; the surface of the heat exchange plate 107 has a coating, and the coating is made of a graphite coating, a silicon carbide coating, or an aluminum nitride coating. In this way, copper can quickly absorb or dissipate heat, and the coating can improve the heat exchange efficiency. It is understandable that the material of the heat exchange plate 107 is not limited to copper, but can also be aluminum.

[0045] Combination Figure 4 and Figure 5 As shown, in some embodiments, the moon-based thermoelectric power generation drilling tool further includes a heat-insulating connector 110, which is fixedly connected to the drill rod 101, and the heat-conducting rod 102 passes through the heat-insulating connector 110. The use of the heat-insulating connector 110 can reduce the heat exchange between the drill rod 101 and the heat-conducting rod 102 from other components other than the thermoelectric power generation module 103, thereby ensuring that the heat exchange between the drill rod 101 and the heat-conducting rod 102 is mainly performed through the thermoelectric power generation module 103, which is conducive to improving the power generation efficiency.

[0046] Combination Figure 4 and Figure 5As shown, in some embodiments, the heat-insulating connector 110 is threadedly connected to the drill rod 101, so that the heat-insulating connector 110 and the drill rod 101 are easily fixed. Exemplarily, the heat-insulating connector 110 has a first internal thread, and the drill rod 101 has a first external thread, and the first internal thread of the heat-insulating connector 110 is threadedly connected to the first external thread of the drill rod 101 to fix the drill rod 101 and the heat-insulating connector 110. The heat-insulating connector 110 may also have a second internal thread, and the heat-conducting rod 102 has a second external thread, and the second internal thread of the heat-insulating connector 110 is threadedly connected to the second external thread of the heat-conducting rod 102 to fix the heat-conducting rod 102 and the heat-insulating connector 110, so that when the extension section 106 of the heat-conducting rod 102 is driven to rotate, the drill rod 101 can be rotated, so as to drill the lunar-based temperature difference power generation drilling tool into the lunar soil or lunar rock. The second external thread is located on the extension section 106. It should be noted that due to the low thermal conductivity of the lunar soil, the heat exchange between the outer surface of the drill rod 101 and the lunar soil is affected. During the drilling process, the surrounding lunar soil can be artificially modified by adding powder with high thermal conductivity to increase the thermal conductivity of the surrounding lunar soil.

[0047] Combination Figure 4 and Figure 5 As shown, in some embodiments, the extension section 106 includes a first subsection 111 and a second subsection 112, and the first subsection 111 and the second subsection 112 may be threadedly connected; the heat exchange plate 107 is fixedly connected to the first subsection 111, and a plurality of heat exchange plates 107 are distributed around the circumference of the first subsection 111; the second external thread is located on the second subsection 112, the second subsection 112 is threadedly connected to the inner section 105, and the heat insulation connector 110 is threadedly connected to the second subsection 112. The length of the second subsection 112 can be set as needed, so as to facilitate the extension of the extension section 106.

[0048] In some embodiments, the material of the heat-insulating connector 110 is polytetrafluoroethylene or polyamide, which is conducive to ensuring that the heat exchange between the drill rod 101 and the heat-conducting rod 102 is mainly carried out through the thermoelectric power generation module 103, which is conducive to improving the power generation efficiency. Exemplarily, the outer contour of the positive projection of the heat-insulating connector 110 in the first plane can be a hexagon, and the first plane is perpendicular to the axis of the drill rod 101. In this way, in the method of drilling the lunar-based thermoelectric power generation drill into the lunar soil, the heat-insulating connector 110 can also be clamped and rotated around the axis of the drill rod 101 to achieve the drilling of the lunar-based thermoelectric power generation drill into the lunar soil.

[0049] See also Figure 1 As shown, in some embodiments, the outer surface of the drill rod 101 has a spiral groove 113 for chip removal, which facilitates the drill rod 101 to drill into the lunar soil.

[0050] See also Figure 5 As shown, in some embodiments, the thermoelectric power generation module 103 includes a supporting inner tube 114 and a plurality of thermoelectric power generation sheets 115, and the thermoelectric power generation sheets 115 are installed on the supporting inner tube 114; one end face of the thermoelectric power generation sheet 115 contacts the inner wall of the drill pipe 101, and the other end face of the thermoelectric power generation sheet 115 contacts the outer surface of the heat conducting rod 102. This facilitates the installation of multiple external thermoelectric power generation sheets. Exemplarily, the thermoelectric power generation sheet 115 is made of bismuth antimony tellurium (Bi2Te3) or other materials with high thermoelectric conversion efficiency. A plurality of thermoelectric power generation sheets 115 are arranged on the supporting inner tube 114 in the form of an array distribution. The two end faces of the thermoelectric power generation sheet 115 are respectively a first heat exchange end face 116 and a second heat exchange end face 117, the first heat exchange end face 116 contacts the inner wall of the drill pipe 101, and the second heat exchange end face 117 contacts the outer surface of the heat conducting rod 102. The support inner tube 114 is sleeved on the outside of the heat-conducting rod 102, and the support inner tube 114 is located in the rod inner cavity 104. The support inner tube 114 includes a first inner tube 118 and a second inner tube 119, and the first inner tube 118 is located inside the second inner tube 119. In this way, two inner tubes are used to facilitate the installation of the temperature difference power generation sheet 115. Exemplarily, the material of the support inner tube 114 can be a material with poor thermal conductivity, that is, the material of the support inner tube 114 can be made of a heat-insulating material, for example, the material of the support inner tube 114 is polytetrafluoroethylene or polyamide. The multiple thermoelectric power generation sheets 115 in the thermoelectric power generation module 103 can be connected in series or in parallel, and the specific connection can be determined according to actual conditions; after the multiple thermoelectric power generation sheets 115 are connected in series or in parallel, the moon-based thermoelectric power generation drill is led out through two main leads, and the extension section 106 can have an axial hole extending along its own axial direction, and the two main leads are led to the outside of the moon-based thermoelectric power generation drill through the axial hole of the extension section 106; in this way, when multiple moon-based thermoelectric power generation drills form a power generation system, the multiple moon-based thermoelectric power generation drills use their own main leads to achieve series connection or parallel connection. For example, when multiple moon-based thermoelectric power generation drills are connected in series, the voltage of the power generation system can be increased; and when multiple moon-based thermoelectric power generation drills are connected in parallel, the current of the power generation system can be increased.

[0051] See also Figure 6As shown, in some embodiments, the lunar-based thermoelectric power generation drilling tool further includes a heat insulation pad 120, which is located at the bottom of the rod inner cavity 104, and one end of the heat conductive rod 102 is in contact with the heat insulation pad 120, so as to ensure that the heat exchange between the drill rod 101 and the heat conductive rod 102 is mainly carried out through the thermoelectric power generation module 103, which is conducive to improving the power generation efficiency. Exemplarily, the material of the heat insulation pad 120 can be polytetrafluoroethylene or polyamide. The material of the heat conductive rod 102 can be copper, tungsten or silicon carbide, and the drill rod 101 can also be copper, tungsten or silicon carbide. The drill rod 101 includes a rod body 121 and a drill bit 122, the rod body 121 is a hollow structure with two ends open, that is, the rod inner cavity 104 is arranged on the rod body 121; the drill bit 122 is threadedly connected to one end of the rod body 121, which is convenient for the manufacture of the drill rod 101, and the bottom of the rod inner cavity 104 is an end face of the drill bit 122.

[0052] The working principle of the monthly-based temperature difference power generation drilling tool provided in the embodiment of the present application is:

[0053] 1. Daytime working mode: During the daytime on the moon, the heat exchange plate 107 absorbs solar radiation heat through the coating on its surface. The heat absorbed by the heat exchange plate 107 is transferred to the thermoelectric power generation sheet 115 through the heat conducting rod 102, thereby generating electricity. The heat is then transferred from the thermoelectric power generation sheet 115 to the drill rod 101 and finally to the lunar soil.

[0054] 2. Night working mode: At night on the moon, the heat in the lunar soil is transferred to the thermoelectric power generation sheet 115 through the drill rod 101, and then transferred from the thermoelectric power generation sheet 115 to the heat conducting rod 102, and finally the heat is quickly dissipated to the surrounding environment through the heat exchange plate 107, so that the thermoelectric power generation sheet 115 can continue to work at night.

[0055] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A moon-based temperature difference power generation drilling tool, characterized in that: include: A drill rod, wherein the drill rod has a rod inner cavity extending along the axial direction of the drill rod; A heat conducting rod, the heat conducting rod being located in the inner cavity of the rod; A temperature difference power generation module is provided between the inner wall of the rod cavity and the outer surface of the heat conducting rod, and heat is transferred between the drill rod and the heat conducting rod through the temperature difference power generation module.

2. The moon-based temperature difference power generation drilling tool according to claim 1, characterized in that: The moon-based temperature difference power generation drilling tool also includes a heat exchange plate, and the heat conducting rod is connected to the heat exchange plate.

3. The moon-based temperature difference power generation drilling tool according to claim 2, characterized in that: The heat conducting rod comprises an inner section and an extended section, the inner section and the extended section are fixedly connected, the inner section is located in the inner cavity of the rod, and the extended section is located outside the inner cavity of the rod; There are multiple heat exchange plates, and the multiple heat exchange plates are distributed along the circumference of the extended section.

4. The moon-based temperature difference power generation drilling tool according to claim 3, characterized in that: The thermoelectric power generation module comprises a supporting inner tube and a plurality of thermoelectric power generation sheets, wherein the thermoelectric power generation sheets are mounted on the supporting inner tube; One end surface of the thermoelectric power generation sheet is in contact with the inner wall of the drill rod, and the other end surface opposite to the thermoelectric power generation sheet is in contact with the outer surface of the heat conducting rod.

5. The moon-based thermoelectric power generation drilling tool according to any one of claims 1 to 4, characterized in that: The moon-based temperature difference power generation drilling tool also includes a heat insulation pad, which is located at the bottom of the rod inner cavity, and one end of the heat conductive rod is in contact with the heat insulation pad.

6. The moon-based thermoelectric power generation drilling tool according to any one of claims 1 to 4, characterized in that: The lunar-based temperature difference power generation drilling tool also includes a heat-insulating connector, which is fixedly connected to the drill rod, and the heat-conducting rod passes through the heat-insulating connector.

7. The moon-based temperature difference power generation drilling tool according to claim 6, characterized in that: The heat-insulating connector is threadedly connected to the drill rod.

8. The moon-based temperature difference power generation drilling tool according to claim 6, characterized in that: The thermal insulation connector is made of polytetrafluoroethylene or polyamide.

9. The moon-based thermoelectric power generation drilling tool according to any one of claims 1 to 4, characterized in that: The outer surface of the drill rod has a spiral groove for chip removal.

10. The moon-based thermoelectric power generation drilling tool according to any one of claims 2 to 4, characterized in that: The heat exchange plate is made of copper; the surface of the heat exchange plate is coated with a coating, and the coating is made of a graphite coating, a silicon carbide coating or an aluminum nitride coating.

Images