Heat pipe and geothermal collection device

Abstract

The present invention discloses a heat pipe and a geothermal collection device. The heat pipe includes a sealing member, a first pipe body, a first heat transfer member, and a second heat transfer member. The sealing member has a channel; one end of the first pipe body has an opening, and the other end is sealed by the sealing member, and the interior has a first cavity for accommodating a heat transfer working medium; the first heat transfer member is connected to the sealing member and is located on one side of the sealing member, and the interior has a cavity; the second heat transfer member is connected to the sealing member and is located on the other side of the sealing member, and the interior has a cavity and can communicate with the cavity in the first heat transfer member through the channel to jointly define a second cavity for accommodating the heat transfer working medium with the first heat transfer member, and the second cavity is separated from the first cavity. In the present invention, heat transfer can be carried out between adjacent heat pipes through an inter-stage heat pipe formed by the first heat transfer member and the second heat transfer member. The inter-stage heat pipe has a low thermal resistance and can extend into the first cavity to fully contact the steam, which helps to improve the heat transfer efficiency.

Description

Technical Field

[0001] The present invention relates to the field of geothermal energy collection, and more particularly to heat pipes and geothermal energy collection devices. Background Art

[0002] As a green, low-carbon and recyclable clean energy, geothermal resources are playing an increasingly prominent role in pollution control, haze reduction, changing the energy consumption structure and improving the ecological civilization. A heat pipe belongs to a heat transfer element that can utilize the phase change heat transfer of the working fluid inside the pipe to quickly transfer the heat of the heat source to a remote end. In related technologies, a heat pipe unit is usually formed by splicing multiple heat pipes, and adjacent heat pipes are connected by a sealed plug. However, in this method, the heat transfer resistance at the connection of the heat pipes is relatively high, and it is difficult to effectively transfer heat. When the heat pipe is relatively long, the problem of heat transfer failure is likely to occur. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a heat pipe that can reduce the heat transfer resistance at the connection of the heat pipes and improve the heat transfer efficiency.

[0004] The present invention also provides a geothermal energy collection device using the above heat pipe.

[0005] In a first aspect, an embodiment of the present invention provides a heat pipe, including:

[0006] A closure member having a channel;

[0007] A first pipe body having an opening at one end and closed at the other end by the closure member, and having a first cavity for accommodating a heat transfer working fluid inside;

[0008] A first heat transfer member connected to the closure member and located on one side of the closure member, and having a cavity inside the first heat transfer member;

[0009] A second heat transfer member connected to the closure member and located on the other side of the closure member, and having a cavity inside the second heat transfer member, and capable of communicating with the cavity inside the first heat transfer member through the channel to jointly define a second cavity for accommodating a heat transfer working fluid with the first heat transfer member, and the second cavity is separated from the first cavity.

[0010] The heat pipe of this embodiment has at least the following beneficial effects:

[0011] In this embodiment, the heat pipe is provided with a first heat transfer member and a second heat transfer member. In a heat pipe unit formed by connecting multiple heat pipes, heat transfer can be performed between adjacent heat pipes through an inter-stage heat pipe formed by the first heat transfer member and the second heat transfer member. The inter-stage heat pipe has a low heat resistance and can extend into the first cavity to fully contact with the steam, which helps to improve the heat exchange efficiency.

[0012] A heat pipe according to some other embodiments of the present invention

[0013] Along the heat transfer direction, the head end of the first pipe body is closed by the closing member, the first heat transfer member is located above the closing member, and the second heat transfer member is located below the closing member;

[0014] It further includes a drainage member, one end of the drainage member is connected to the second heat transfer member, and the other end extends downward and is connected to the inner wall of the first pipe body.

[0015] A heat pipe according to some other embodiments of the present invention

[0016] It further includes a second pipe body, the second pipe body is located inside the first pipe body, and there is a gap between the second pipe body and the first pipe body.

[0017] A heat pipe according to some other embodiments of the present invention

[0018] Both the surfaces of the first heat transfer member and the second heat transfer member are provided with wicks.

[0019] A heat pipe according to some other embodiments of the present invention

[0020] The surface of the first pipe body is provided with a wick.

[0021] In a second aspect, an embodiment of the present invention provides a heat pipe, including:

[0022] A closing member;

[0023] A first pipe body, both ends of which are closed by the closing member, and having a first cavity for accommodating a heat transfer working medium inside;

[0024] A first heat transfer member, connected to one of the closing members and located inside the first cavity, and having a cavity inside the first heat transfer member;

[0025] A second heat transfer member, connected to the other closing member and located inside the first cavity, and having a cavity inside the second heat transfer member.

[0026] In a third aspect, an embodiment of the present invention provides a geothermal collection device, including:

[0027] A geothermal collection part, including a plurality of the heat pipes, and one end of the heat pipe having the opening is connected to one end of the adjacent heat pipe having the closing member;

[0028] A heat exchange part, including a heat exchanger, and the heat exchanger is used to transfer the heat collected by the geothermal collection part.

[0029] A geothermal collection device according to some other embodiments of the present invention

[0030] It further includes a heat transfer part. Along the heat transfer direction, the tail end of the heat transfer part is connected to the head end of the geothermal collection part, and the head end of the heat transfer part is connected to the heat exchange part.

[0031] A geothermal collection device according to some other embodiments of the present invention

[0032] The heat transfer part includes a plurality of the heat pipes. One end of the heat pipe with the opening is connected to one end of the adjacent heat pipe with the closure.

[0033] A geothermal collection device according to some other embodiments of the present invention

[0034] Both ends of the heat pipe are provided with flanges. The adjacent heat pipes are attached through the flanges and connected by threaded fasteners;

[0035] Alternatively, it further includes a connecting sleeve. The adjacent ends of the adjacent heat pipes are respectively inserted into both ends of the connecting sleeve.

[0036] In a fourth aspect, an embodiment of the present invention provides a geothermal collection device, including:

[0037] A geothermal collection part, including a plurality of the heat pipes. One end of the heat pipe with the first heat transfer member is connected to one end of the adjacent heat pipe with the second heat transfer member, so that the first heat transfer member and the second heat transfer member of the adjacent heat pipe jointly define a second cavity for accommodating a heat transfer working medium, and the second cavity is separated from the first cavity;

[0038] A heat exchange part, including a heat exchanger, which is used to transfer the heat collected by the geothermal collection part.

[0039] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0041] Figure 1 is a cross-sectional view of the heat pipe in the embodiment of the present invention;

[0042] Figure 2 is through Figure 1 the cross-sectional view of the heat pipe unit formed by the heat pipes in;

[0043] Figure 3 is a cross-sectional view of the heat pipe in another embodiment of the present invention;

[0044] Figure 4 is a cross-sectional view of the interstage heat pipe with a wick in another embodiment of the present invention;

[0045] Figure 5 is a cross-sectional view of the connection of two first pipe bodies in an embodiment of the present invention;

[0046] Figure 6 is a cross-sectional view of a heat pipe in another embodiment of the present invention;

[0047] Figure 7 is through Figure 6 a cross-sectional view of forming a heat pipe unit by the heat pipe in;

[0048] Figure 8 is a cross-sectional view of the geothermal collection device in a working state in an embodiment of the present invention;

[0049] Figure 9 is a cross-sectional view of the geothermal collection device in a working state in another embodiment of the present invention. Detailed implementation manners

[0050] The following will clearly and completely describe the concept of the present invention and the technical effects generated in combination with the embodiments, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative labor shall fall within the scope of protection of the present invention.

[0051] In the description of the embodiments of the present invention, if the orientation description is involved, such as "upper", "lower", etc., the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0052] In the description of the embodiments of the present invention, if a certain feature is referred to as "set", "fixed", "connected", "installed" on another feature, it can be directly set, fixed, connected on another feature, or indirectly set, fixed, connected, installed on another feature. In the description of the embodiments of the present invention, if "a plurality of" is involved, its meaning is more than two. If "first" and "second" are involved, it should be understood as used to distinguish technical features, rather than indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0053] In the related art, heat pipes are connected by sealed plugs. The heat in the lower-level heat pipe needs to be transferred to the upper-level heat pipe through the sealed plug. The sealed plug has a large thermal resistance and a small heat exchange area, resulting in a large amount of heat loss during the transfer process. When the length of the heat pipe unit is relatively long (generally speaking, geothermal resources are located at a relatively deep position in the earth's crust, and the heat pipe unit may be several kilometers long), it is easy to have the problem of heat transfer failure.

[0054] Based on this, the present invention provides a heat pipe. By providing a first heat transfer member and a second heat transfer member on the heat pipe, an inter-stage heat pipe can be formed when the heat pipes are connected in series. The inter-stage heat pipe is used to replace the sealed plug for heat transfer, which can effectively reduce the thermal resistance, increase the heat exchange area, and reduce heat loss.

[0055] The following Figures 1 to 5 illustrates the heat pipe according to the embodiments of the present invention.

[0056] Referring to Figure 1 , in some embodiments of the present invention, the heat pipe 100 includes a first pipe body 110, a sealing member 120, a first heat transfer member 130, and a second heat transfer member 140. One end of the first pipe body 110 has an opening 111, and the other end is sealed by the sealing member 120. The interior of the first pipe body 110 has a first cavity 112 for accommodating a heat transfer working medium. The sealing member 120 has a channel 121, so as to realize the communication between the inside and outside of the first pipe body 110. The first heat transfer member 130 and the second heat transfer member 140 are both connected to the sealing member 120 and are respectively located on opposite sides of the sealing member 120. The interiors of the first heat transfer member 130 and the second heat transfer member 140 both have cavities, and the cavities of the two are communicated through the channel 121 on the sealing member 120, so that the first heat transfer member 130 and the second heat transfer member 140 can jointly define a second cavity 113 for accommodating the heat transfer working medium, and the second cavity 113 is separated from the first cavity 112.

[0057] Specifically, the first pipe body 110 of this embodiment is a cylindrical pipe and is made of a heat-conducting material, including but not limited to metals such as copper, aluminum, steel, and stainless steel, non-metallic materials such as polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene (PE), polyethylene terephthalate (PET), and glass, laminated composite materials such as composite films of aluminum plastic film, plastic, and metal foil, and doped composite materials such as ceramic matrix composite materials and resin matrix composite materials. Based on the actual use scenario of the heat pipe, Figure 1The upper end of [the relevant part] is the head end of the first tube body 110, and the lower end is the tail end of the first tube body 110. The direction from bottom to top is the heat transfer direction. In addition, among two connected heat pipes 100, the heat pipe relatively located above is called the upper-level heat pipe, and the heat pipe relatively located below is called the lower-level heat pipe (the meanings of "head end", "tail end", "heat transfer direction", "upper level" and "lower level" recorded below are the same). One end of the first tube body 110 (for example Figure 1 the tail end) has an opening 111, and the head end is sealed by a sealing member 120. Thus, referring to Figure 2 , when two heat pipes 100 are connected end to end, the sealing member 120 of the lower-level heat pipe 100 can seal the opening 111 of the upper-level heat pipe 100, so that the first cavity 112 of the upper-level heat pipe 100 is in a sealed state, which is convenient for forming a vacuum environment in the first cavity 112 to accelerate the phase change of the working medium.

[0058] It can be understood that it can also be that the head end of the first tube body 110 has an opening 111 and the tail end is sealed by a sealing member 120.

[0059] The sealing member 120 is used to seal the end of the first tube body 110. In this embodiment, the sealing member 120 is an end plate and is connected to the first tube body 110 by welding or other means. The sealing member 120 has a channel 121, and the channel 121 can be a through hole or other structures.

[0060] The first heat transfer member 130 and the second heat transfer member 140 can be cylindrical tube bodies and are respectively located on opposite sides of the sealing member 120. Taking Figure 1 as an example, when the sealing member 120 is located at the head end of the first tube body 110, the first heat transfer member 130 is located above the sealing member 120, that is, it extends outside the first tube body 110. The second heat transfer member 140 is located below the sealing member 120, that is, it is located inside the first tube body 110.

[0061] Referring to Figure 2, the arrows in the figure indicate the direction of heat transfer. When two heat pipes 100 are connected end to end, the first heat transfer member 130 of the lower-level heat pipe is located in the first cavity 112 of the upper-level heat pipe 100. After the lower-level heat pipe 100 collects geothermal heat or receives heat from a lower-level heat pipe, the working fluid in the first cavity 112 of the heat pipe 100 is heated and evaporated. The formed steam rises to the head end of the heat pipe 100 and exchanges heat with the second heat transfer member 140. The heat is transferred from the steam to the working fluid in the second cavity 113, causing the working fluid in the second cavity 113 to be heated and evaporated. The steam in the second cavity 113 rises into the first heat transfer member 130 and heat exchange occurs again. The heat is transferred from the steam in the second cavity 113 to the working fluid in the first cavity 112 of the upper-level heat pipe 100, and the working fluid in the first cavity 112 of the upper-level heat pipe 100 is heated and evaporated, and the heat is transferred to the heat pipe 100 at the previous level according to the above process. On the other hand, the steam in the first cavity 112 of the lower-level heat pipe 100 condenses after heat transfer and then flows back to the bottom of the lower-level heat pipe 100. The steam in the second cavity 113 condenses after heat transfer and then flows back to the bottom of the second heat transfer member 140 to achieve cyclic transfer.

[0062] In this embodiment, the first heat transfer member 130 and the second heat transfer member 140 are made of a heat-conductive material, for example, the same material as the first pipe body 110.

[0063] In this embodiment, the working fluid includes but is not limited to deionized water, acetone, methanol, heptane, ethanol, methanol, ammonia, carbon dioxide, etc. Different working fluids and different filling rates can be used in the heat pipes 100 at different positions, which are set according to actual design requirements, such as between 5% and 50%.

[0064] In this embodiment, the heat pipe 100 is provided with a first heat transfer member 130 and a second heat transfer member 140. In a heat pipe unit formed by connecting multiple heat pipes 100, heat can be transferred between adjacent heat pipes 100 through an inter-stage heat pipe formed by the first heat transfer member 130 and the second heat transfer member 140. The inter-stage heat pipe has a low thermal resistance and can extend into the first cavity 112 to be in full contact with the steam, which helps to improve the heat transfer efficiency.

[0065] Refer to Figure 1 , in some specific embodiments of the present invention, along the heat transfer direction, the head end of the first pipe body 110 is closed by a closure member 120. The first heat transfer member 130 is located above the closure member 120, that is, outside the first pipe body 110, and the second heat transfer member 140 is located below the closure member 120, that is, outside the first pipe body 110. The first heat transfer member 130, the second heat transfer member 140 and the closure member 120 can be connected as a whole, so that the first heat transfer member 130 and the second heat transfer member 140 form an integral inter-stage heat pipe to ensure the sealing performance of the second cavity 113.

[0066] In some specific embodiments of the present invention, the heat pipe further includes a drainage member 150. One end of the drainage member 150 is connected to the second heat transfer member 140, and the other end extends downward and is connected to the inner wall of the first tube body 110. After the steam in the first cavity 112 of the lower-level heat pipe 100 exchanges heat, it will condense on the surface of the second heat transfer member 140. The condensed working fluid can be guided by the drainage member 150 to the inner wall of the first tube body 110 and then flow back, avoiding the direct fall of the working fluid from the second heat transfer member 140 and increasing the resistance to the rise of the steam.

[0067] The drainage member 150 can be a rod-shaped structure. The liquid working fluid adheres to the surface of the drainage member 150 and flows downward under the action of gravity. The drainage member 150 can also include a collecting tray and a drainage pipe (not shown). The collecting tray is arranged along the circumferential direction of the second heat transfer member 140 (it can only cover a part of the circumference of the second heat transfer member 140, such as 1 / 4 of the circumference, to avoid hindering the rise of the steam), and extends substantially along the radial direction of the second heat transfer member 140. The collecting tray can be recessed downward to form a cavity for storing the liquid working fluid. One end of the drainage pipe is communicated with the cavity of the collecting tray, and the other end leads to the inner wall of the first tube body 110. In this way, the liquid working fluid can first be collected in the collecting tray and then guided to the inner wall of the first tube body 110 through the drainage pipe. It can be understood that the drainage member 150 is not limited to the above structure, and any structure that can drain the liquid working fluid on the second heat transfer member 140 downward to the tube wall can be adopted.

[0068] It can be understood that a plurality of drainage members 150 can be arranged on the second heat transfer member 140 along the heat transfer direction, or a plurality of drainage members 150 can be arranged along the circumferential direction, so as to further avoid the direct fall of the liquid working fluid.

[0069] Refer to Figure 3 , in some specific embodiments of the present invention, the heat pipe 100 further includes a second tube body 160. The second tube body 160 is located inside the first tube body 110, and there is a gap between the second tube body 160 and the first tube body 110.

[0070] In this embodiment, the second tube body 160 can be a cylindrical tube and is coaxial with the first tube body 110. The outer diameter of the second tube body 160 is smaller than the inner diameter of the first tube body 110. When the second tube body 160 is installed inside the first tube body 110, a gap can be formed between the second tube body 160 and the first tube body 110. In this way, the second tube body 160 divides the first cavity 112 into a steam channel and a liquid channel. The hot steam can rise through the middle steam channel, and the liquid working fluid can flow in the liquid channel between the second tube body 160 and the first tube body 110, avoiding the backflow of the liquid working fluid from affecting the rise of the steam.

[0071] Refer to Figure 4, in some specific embodiments of the present invention, wick structures 170 are provided on the surfaces of the first heat transfer member 130 and the second heat transfer member 140. The thickness of the wick structure 170 is generally 0.01 to 0.25 times the pipe diameter. Specifically, wick structures 170 are provided on the inner and outer surfaces of the first heat transfer member 130, and on the inner and outer surfaces of the second heat transfer member 140. The wick structure 170 can guide the flow of the liquid working medium, and at the same time can also increase the heat transfer area and improve the heat transfer efficiency. The wick structure 170 can be a hierarchical structure attached to the surface of the heat transfer member, such as metal foam, metal wire mesh, sintered powder, etc., or a groove structure directly formed on the surface of the heat transfer member. The cross-sectional shape of the groove can be arc-shaped, triangular, rectangular, trapezoidal, etc. It can be understood that the wick structure 170 can also be a combination of a groove structure and a hierarchical structure.

[0072] In some specific embodiments of the present invention, when the heat pipe 100 is used to collect geothermal energy, a wick structure 170 is provided on the surface of the first pipe body 110, thereby increasing the collection capacity of the heat pipe 100.

[0073] Refer to Figure 1 , in some specific embodiments of the present invention, two heat pipes 100 can be connected by fasteners such as bolts. Specifically, flanges 180 are provided at both the head and tail ends of the heat pipe 100, and through holes are provided on the flanges 180. After the two heat pipes 100 are docked, the heat pipes 100 can be fixed by bolting the two flanges 180 together. It can be understood that a sealing member such as a sealing ring can also be provided between the flanges 180 to seal the first cavity 112.

[0074] Refer to Figure 5 , for ease of understanding, only the first pipe body 110 of the heat pipe 100 is shown in the figure. In some specific embodiments of the present invention, two heat pipes 100 can be connected by a connecting sleeve 200. Specifically, external threads are provided at both the head and tail ends of the heat pipe 100, and internal threads are provided on the inner wall of the connecting sleeve 200. When the adjacent ends of the two heat pipes 100 are respectively screwed into the connecting sleeve 200, they can be fixed. It can be understood that the connecting sleeve 200 and the heat pipe 100 can also be directly fixed by welding.

[0075] In some specific embodiments of the present invention, a vacuum extraction hole and a liquid injection hole are provided on the first pipe body 110. The vacuum extraction hole is used to connect to a vacuum extraction device to form a vacuum environment inside the first pipe body 110. The liquid injection hole is used to connect to a liquid injection device to inject the working medium into the first cavity 112.

[0076] Refer to Figure 1, in some specific embodiments of the present invention, a single heat pipe 100 includes multiple inter-stage heat pipes. The multiple inter-stage heat pipes are parallel and arranged along the axial direction of the first pipe body 110. It can be understood that the multiple inter-stage heat pipes can also be replaced by a single inter-stage heat pipe with a large diameter.

[0077] Referring to Figure 6 , in some other embodiments of the present invention, the heat pipe 100 includes a first pipe body 110, a sealing member 120, a first heat transfer member 130, and a second heat transfer member 140. Both ends of the first pipe body 110 are sealed by the sealing member. The interior of the first pipe body 110 has a first cavity 112 for accommodating a heat transfer working medium. The first heat transfer member 130 is connected to one of the sealing members 120 and is located inside the first cavity 112. The interior of the first heat transfer member 130 has a cavity. The second heat transfer member 140 is connected to the other sealing member 120 and is located inside the first cavity 112. The interior of the second heat transfer member 140 has a cavity.

[0078] In this embodiment, the first heat transfer member 130 is connected to the sealing member 120 at the head end of the first pipe body 110. The sealing member 120 at the head end has a channel communicating with the cavity inside the first heat transfer member 130. Correspondingly, the second heat transfer member 140 is connected to the sealing member 120 at the tail end of the first pipe body 110. The sealing member 120 at the tail end has a channel communicating with the cavity inside the second heat transfer member 140, and the channels on both sealing members 120 correspond to each other. Referring to Figure 7 , when two heat pipes 100 are connected in a head-to-tail manner, the sealing member 120 at the tail end of the upper-level heat pipe 100 fits with the sealing member 120 at the head end of the lower-level heat pipe 100 and is fixed by a flange and a threaded connector. The second heat transfer member 140 of the upper-level heat pipe 100 is docked with the first heat transfer member 130 of the lower-level heat pipe 100. The cavities of the two are communicated through the channels on the sealing member 120, so that the second heat transfer member 140 of the upper-level heat pipe 100 and the first heat transfer member 130 of the lower-level heat pipe 100 jointly form an inter-stage heat pipe, thereby defining a second cavity 113. In this way, the purpose of connecting the inter-stage heat pipes to the upper and lower heat pipes 100 respectively can also be achieved.

[0079] Referring to Figure 8 , the arrows in the heat exchange part 400 in the figure indicate the flow direction of the heat transfer medium. In some other embodiments of the present invention, a geothermal collection device is also disclosed. The geothermal collection device includes a geothermal collection part 300 and a heat exchange part 400. The geothermal collection part 300 includes multiple heat pipes 100 as described above. The heat pipes 100 can adopt Figures 1 to 5 the heat pipes of the illustrated embodiment, and the heat pipes 100 adopt Figure 2They are connected in the manner shown, that is, one end of the upper heat pipe 100 with an opening 111 is connected to one end of the lower heat pipe 100 with a seal 120, so as to realize the transfer of heat from bottom to top. The heat exchange part 400 is used to transfer the heat collected by the geothermal collection part 300 to other devices through a heat transfer medium.

[0080] In this embodiment, a wick 170 is provided on the surface of the heat pipe 100 that constitutes the geothermal collection part 300 to enhance the heat exchange capacity.

[0081] In this embodiment, the heat exchange part 400 is located on the ground and includes a housing 410 and a heat exchange pipe 420. The housing 410 is communicated with the first cavity 112 of the uppermost heat pipe 100. The heat exchange pipe 420 is located in the housing 410 and can be in direct contact with the steam in the first cavity 112, so that the heat is transferred from the steam to the heat transfer medium in the heat exchange pipe 420.

[0082] Refer to Figure 9 , in some specific embodiments of the present invention, the heat exchange pipe 420 is wound around the outside of the housing 410. The heat of the steam is first transferred to the housing 410 and then transferred to the heat exchange pipe 420 through the housing 410. In order to increase the heat exchange area, a wick 170 is provided on the surface of the housing 410.

[0083] It can be understood that the heat exchange part 400 can also adopt other known heat exchange structures, such as shell-and-tube heat exchangers and plate heat exchangers, etc.

[0084] Refer to Figure 8 , Figure 9 , in some specific embodiments of the present invention, the geothermal collection device further includes a heat transfer part 500. Along the heat transfer direction, the tail end of the heat transfer part 500 is connected to the head end of the geothermal collection part 300, and the head end of the heat transfer part 500 is connected to the heat exchange part 400, which is used for the transfer of heat in a non-heat source area.

[0085] In some specific embodiments of the present invention, the heat transfer part 500 includes a plurality of the above-mentioned heat pipes 100. The heat pipes 100 can adopt Figures 1 to 5 the heat pipes of the embodiment shown, and the heat pipes 100 are connected in the manner shown in Figure 2 , that is, one end of the upper heat pipe 100 with an opening 111 is connected to one end of the lower heat pipe 100 with a seal 120, so as to realize the transfer of heat from bottom to top. A wick 170 can be provided on the surface of the heat pipe 100 that constitutes the geothermal collection part 300, or it can be a smooth surface.

[0086] Refer to Figure 8, in some specific embodiments of the present invention, among the multiple heat pipes 100 constituting the geothermal collection part 300, the heat pipe 100 at the bottommost has a starting device 600, and a plurality of temperature and pressure sensors are arranged along the wall of the heat pipe 100. The temperature and pressure sensors can detect the temperature and air pressure inside the pipe. When the working fluid is supercooled and difficult to boil, the working fluid can be heated through the starting device 600. In this embodiment, the starting device 600 can be a heating device such as an electric heating rod.

[0087] In some other embodiments of the present invention, the geothermal collection device includes a geothermal collection part 300 and a heat exchange part 400. The geothermal collection part 300 includes a plurality of the above-mentioned heat pipes 100, and the heat pipes 100 can adopt Figure 6 the heat pipes of the embodiment shown, and the heat pipes 100 are connected in the Figure 7 way shown, that is, the tail end of the second heat transfer member 140 of the upper-level heat pipe 100 is connected to the head end of the first heat transfer member 130 of the lower-level heat pipe 100, so as to realize the transfer of heat from bottom to top. The heat exchange part 400 is used to transfer the heat collected by the geothermal collection part 300 to other devices through a heat transfer medium.

[0088] The embodiments of the present invention have been described in detail above with reference to the drawings. However, the present invention is not limited to the above embodiments. Various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. A heat pipe, characterized in that, Comprising: A closure member having a passage; A first tube body, one end of which has an opening, the other end of which is closed by the closure member, and having a first cavity inside for accommodating a heat transfer working medium; A first heat transfer member connected to the closure member and located on one side of the closure member, the inside of the first heat transfer member having a cavity; A second heat transfer member connected to the closure member and located on the other side of the closure member, the inside of the second heat transfer member having a cavity and being able to communicate with the cavity inside the first heat transfer member through the passage, so as to jointly define a second cavity for accommodating a heat transfer working medium with the first heat transfer member, and the second cavity is separated from the first cavity; Along the heat transfer direction, the head end of the first tube body is closed by the closure member, the first heat transfer member is located above the closure member, and the second heat transfer member is located below the closure member; It further includes a drainage member, one end of the drainage member is connected to the second heat transfer member, and the other end extends downward and is connected to the inner wall of the first tube body; the second heat transfer member and the first tube body are arranged at intervals.

2. The heat pipe according to claim 1, wherein: It further includes a second tube body, the second tube body is located inside the first tube body, and there is a gap between the second tube body and the first tube body.

3. The heat pipe according to claim 1, wherein: Liquid-absorbing cores are provided on the surfaces of both the first heat transfer member and the second heat transfer member.

4. The heat pipe according to claim 1, wherein: A liquid-absorbing core is provided on the surface of the first tube body.

5. A heat pipe, characterized in that, Comprising: A closure member; A first tube body, both ends of which are closed by the closure member, and having a first cavity inside for accommodating a heat transfer working medium; A first heat transfer member connected to one of the closure members and located inside the first cavity, the inside of the first heat transfer member having a cavity; A second heat transfer member connected to the other closure member and located inside the first cavity, the inside of the second heat transfer member having a cavity; The heat pipe further includes a drainage member, one end of the drainage member is connected to the second heat transfer member, and the other end extends downward and is connected to the inner wall of the first tube body; the second heat transfer member and the first tube body are arranged at intervals.

6. Geothermal collection device, characterized in that, Comprising: A geothermal collection part, including a plurality of heat pipes as described in any one of claims 1 to 4, and one end of the heat pipe having the opening is connected to one end of the adjacent heat pipe having the closure member; A heat exchange part, including a heat exchanger for transferring the heat collected by the geothermal collection part.

7. The geothermal collection device according to claim 6, wherein: It further includes a heat transfer part, along the heat transfer direction, the tail end of the heat transfer part is connected to the head end of the geothermal collection part, and the head end of the heat transfer part is connected to the heat exchange part.

8. The geothermal collection device according to claim 7, wherein: The heat transfer part includes a plurality of heat pipes, and one end of the heat pipe having the opening is connected to one end of the adjacent heat pipe having the closure member.

9. The geothermal collection device according to claim 6, wherein: Flanges are provided at both ends of the heat pipe, and adjacent heat pipes are attached to each other through the flanges and connected by threaded fasteners; Alternatively, it further includes a connecting sleeve, and adjacent ends of adjacent heat pipes are respectively inserted into two ends of the connecting sleeve.

10. Geothermal collection device, characterized in that, It includes: A geothermal collection part, including a plurality of heat pipes as described in claim 5. One end of the heat pipe having the first heat transfer member is connected to one end of the adjacent heat pipe having the second heat transfer member, so that the first heat transfer member and the second heat transfer member of the adjacent heat pipe jointly define a second cavity for accommodating a heat transfer working medium, and the second cavity is separated from the first cavity; A heat exchange part, including a heat exchanger, and the heat exchanger is used to transfer the heat collected by the geothermal collection part.

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