Flexible heat pipe capable of transmitting large heat at a long distance

Abstract

The application relates to a flexible heat pipe capable of transmitting large heat at a long distance, which belongs to the technical field of heat sinks and comprises an evaporation section, an adiabatic section and a condensation section. The adiabatic section comprises a concentric tube structure. The concentric tube structure comprises a liquid pipe and a corrugated pipe. The liquid pipe and the corrugated pipe are concentric, and the inner diameter of the corrugated pipe is larger than the outer diameter of the liquid pipe. Alternatively, the adiabatic section comprises a double-pipe structure. The double-pipe structure comprises a liquid pipe and a steam pipe. The liquid pipe penetrates through the double-pipe structure and is connected with the evaporation section and the condensation section. The steam pipe penetrates through the double-pipe structure and is connected with the evaporation section and the condensation section. The liquid pipe and the steam pipe are independent of each other. The flexible heat pipe has a strong transmission capacity and small flow resistance loss, because only a capillary structure with a small pore diameter and a high permeability rate is arranged in the evaporation section and the condensation section. Only transmission pipes are arranged in the adiabatic section, the flow resistance is small, and the layout is flexible and convenient, so that the flexible heat pipe can realize large heat and long-distance transmission.

Description

Technical Field

[0001] This invention relates to the field of radiator technology, and in particular to a flexible heat pipe capable of transmitting large amounts of heat over long distances. Background Technology

[0002] A heat pipe is a new type of high-efficiency heat transfer element that transfers heat through the evaporation and condensation of a working fluid within a fully enclosed vacuum tube. A heat pipe is generally divided into three parts: an evaporation section, an adiabatic section, and a condensation section. When the heat source comes into contact with the evaporation section of the heat pipe, the working fluid is heated and evaporates into vapor. The vapor is then driven by the pressure difference into the condensation section, where it condenses into liquid. The liquid working fluid then flows back to the evaporation section through the capillary force of the wick inside the tube, forming a working cycle. Heat pipes have advantages such as high thermal conductivity, excellent isothermal performance, and variable heat flux density.

[0003] When the spatial positions of the heat source and cold source have complex geometric relationships, or their relative spatial positions are not fixed, the application of traditional heat pipes is greatly limited. This is where flexible heat pipes come in.

[0004] Flexible heat pipes can solve the problems of complex layouts and dynamic connections.

[0005] Traditional flexible heat pipes use a corrugated or polymer tube as the insulated section, and a flexible porous material made of layered metal wire mesh or metal felt to transfer the liquid working fluid from the condensation section to the evaporation section. The space in the corrugated tube is used to transfer the gaseous working fluid from the evaporation section to the condensation section. However, flexible heat pipes still have some problems.

[0006] For example, patent application number 202220273605.8 discloses a flexible heat pipe, in which capillary structures are provided in the evaporation section, flexible tube section, and condensation section. The capillary structures in the evaporation and condensation sections are arranged in semi-circular or circular shapes, while the capillary structures in the flexible tube section are arranged in spiral fins. However, due to the significant flow resistance loss in the flexible connection part, this flexible heat pipe cannot achieve large-scale and long-distance heat transfer, and its application scenarios are very limited. Summary of the Invention

[0007] To address the technical problem that existing flexible heat pipes cannot achieve large-scale and long-distance heat transfer, thus limiting their application scenarios, this invention discloses a flexible heat pipe capable of transmitting large amounts of heat over long distances. The technical solution of this invention is implemented as follows:

[0008] A flexible heat pipe capable of transmitting large amounts of heat over long distances includes an evaporation section, an insulation section, and a condensation section; the two ends of the insulation section are respectively connected to the evaporation section and the condensation section; the insulation section includes a concentric tube structure.

[0009] The concentric tube structure includes a liquid pipeline and a corrugated pipe;

[0010] The liquid pipeline and the bellows are concentric, and the inner diameter of the bellows is larger than the outer diameter of the liquid pipeline.

[0011] or,

[0012] The insulation section includes a double-tube structure;

[0013] The dual-pipe structure includes a liquid pipeline and a vapor pipeline;

[0014] The liquid pipeline runs through the double-pipe structure and connects the evaporation section and the condensation section;

[0015] The steam pipe runs through the double-pipe structure and connects the evaporation section and the condensation section;

[0016] The liquid pipeline and the steam pipeline are independent of each other.

[0017] Preferably, the evaporation section includes a first capillary structure, a first shell, a first end cap, a first saddle, a first connector, and a first bayonet tube;

[0018] The first capillary structure includes a first vapor channel and a first liquid channel; the first liquid channel extends through the first capillary structure; the first vapor channel is located on the outer surface of the first capillary structure.

[0019] The outer diameter of the first capillary structure is interference-fitted with the inner diameter of the first tube shell. The first end cap and the first connector are respectively installed on both sides of the first tube shell. The first end cap is installed on one side of the first capillary structure and closes one end of the first liquid main channel. The first connector is installed on the other side of the first capillary structure. The first bayonet tube is installed in the first liquid main channel and is connected to one end of the liquid pipeline.

[0020] The condensation section includes a second capillary structure, a second shell, a second end cap, a second saddle, a second connector, and a second bayonet tube;

[0021] The second capillary structure includes a second vapor channel and a second liquid channel; the second liquid channel extends through the second capillary structure; the second vapor channel is located on the outer surface of the second capillary structure.

[0022] The outer diameter of the second capillary structure is interference-fitted with the inner diameter of the second tube shell. The second end cap and the second connector are respectively installed on both sides of the second tube shell. The second end cap is installed on one side of the second capillary structure and closes one end of the second liquid trunk. The second connector is installed on the other side of the second capillary structure. The second piercing tube is installed inside the second liquid trunk and connects to the other end of the liquid pipeline.

[0023] Preferably, when the insulation section includes a concentric tube structure:

[0024] The first connector includes a first steam passage, a first shell limiting groove, a first insulation section limiting groove, a first liquid interface, and a first steam interface;

[0025] The first tube shell is installed in the first tube shell limiting groove, the first steam passage is vertically connected to the first steam interface, the first steam passage is connected to the first steam channel, and one end of the corrugated pipe is fixed to the first insulation section limiting groove.

[0026] The second connector includes a second steam passage, a second shell limiting groove, a second insulation section limiting groove, a second liquid interface, and a second steam interface;

[0027] The second tube shell is installed in the second tube shell limiting groove, the second steam passage is vertically connected to the second steam interface, the second steam passage is connected to the second steam channel, and the other end of the corrugated pipe is fixed to the second insulation section limiting groove.

[0028] Preferably, when the insulation section includes a double-tube structure:

[0029] The first joint includes a first steam passage, a first shell limiting groove, a first insulation section limiting groove, a first liquid interface, and a first steam interface;

[0030] The first liquid interface is located at the center of the first connector, the first steam interface is located above the first liquid interface, the first steam channel is perpendicular to and connected to the first steam interface, and one end of the steam pipeline is fixed to the limiting groove of the first insulation section.

[0031] The second connector includes a second steam passage, a second shell limiting groove, a second insulation section limiting groove, a second liquid interface, and a second steam interface.

[0032] The second liquid interface is located at the center of the second connector, the second steam interface is located above the second liquid interface, the second steam channel is perpendicular to and connected to the second steam interface, and the other end of the steam pipeline is fixed to the limiting groove of the second insulation section.

[0033] Preferably, the first saddle includes a first shell mounting port, a first mounting foot, and a first contact surface; the first shell is inserted into the first shell mounting port and welded, the first mounting foot is located on the side of the first saddle, and the first contact surface is located at the bottom of the first saddle;

[0034] The second saddle includes a second housing mounting port, a second mounting foot, and a second contact surface; the second housing is inserted into the second housing mounting port and welded, the second mounting foot is located on the side of the second saddle, and the second contact surface is located at the bottom of the second saddle.

[0035] Preferably, the evaporation section and the condensation section have the same structure.

[0036] The flexible heat pipe of the present invention has capillary structures with small pore size and high permeability only in the evaporation section and the condensation section, which has strong transmission capacity and low flow resistance loss; only transmission pipelines are set in the insulation section, with low flow resistance and flexible and convenient layout, thereby realizing the large heat and long-distance transmission of the flexible heat pipe. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 A front view of an embodiment of a flexible heat pipe capable of transmitting large amounts of heat over long distances;

[0039] Figure 2 A front cross-sectional view of an embodiment of a flexible heat pipe capable of transmitting large amounts of heat over long distances;

[0040] Figure 3 This is a front sectional view of one embodiment of the evaporation section;

[0041] Figure 4 A front sectional view of a first capillary structure;

[0042] Figure 5 This is a front sectional view of a first embodiment of the connector;

[0043] Figure 6 A side view of a first embodiment of the saddle;

[0044] Figure 7 This is a front sectional view of one embodiment of an insulation section;

[0045] Figure 8 A front view of another embodiment of a flexible heat pipe capable of transferring large amounts of heat over long distances;

[0046] Figure 9 A front sectional view of another embodiment of a flexible heat pipe capable of transmitting large amounts of heat over long distances;

[0047] Figure 10 A front sectional view of another embodiment of the evaporation section;

[0048] Figure 11 A side view of another embodiment of the first connector;

[0049] Figure 12 This is a front sectional view of another type of first joint.

[0050] In the above figures, the figure numbers indicate the following:

[0051] 1. Evaporation section

[0052] 1-1. First capillary structure;

[0053] 1-1-1, First Steam Channel;

[0054] 1-1-2, First liquid main channel;

[0055] 1-2, First shell;

[0056] 1-3, First end cap;

[0057] 1-4, First Saddle;

[0058] 1-4-1, First tube shell mounting port;

[0059] 1-4-2, First mounting pin;

[0060] 1-4-3, First contact surface;

[0061] 1-5, First connector;

[0062] 1-5-1, First Steam Passage;

[0063] 1-5-2, First shell limiting groove;

[0064] 1-5-3, First insulation section limiting groove;

[0065] 1-5-4, First liquid interface;

[0066] 1-5-5, First Automobile Works Interface;

[0067] 1-6, First bayonet barrel;

[0068] 2. Insulation section;

[0069] 2-1. Liquid pipeline;

[0070] 2-2. Corrugated pipe;

[0071] 2-3. Steam pipelines;

[0072] 3. Condensation section. Detailed Implementation

[0073] The technical solutions of the present invention will now be clearly and completely described with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0074] Example 1

[0075] In one specific embodiment, such as Figure 1-7 As shown, a flexible heat pipe capable of transmitting large amounts of heat over long distances includes an evaporation section 1, an insulation section 2, and a condensation section 3. The evaporation section 1 and the condensation section 3 have identical structures, while the insulation section 2 in this embodiment has a concentric tube structure.

[0076] The concentric tube structure includes a liquid pipe 2-1 and a corrugated pipe 2-2. The two ends of the adiabatic section 2 are connected to the evaporation section 1 and the condensation section 3, respectively.

[0077] Evaporation section 1 includes a first capillary structure 1-1, a first tube shell 1-2, a first end cap 1-3, a first saddle 1-4, a first connector 1-5, and a first bayonet tube 1-6.

[0078] The first capillary structure 1-1 is a porous material with characteristics of small pore size, high porosity, high permeability, and low equivalent thermal conductivity. The first capillary structure 1-1 is a through-hole cylindrical shape with a first steam channel 1-1-1 machined on the outer surface and a central through hole as a first liquid main channel 1-1-2.

[0079] The outer diameter of the first capillary structure 1-1 is press-fitted with the inner diameter of the first tube shell 1-2. The first end cap 1-3 and the first connector 1-5 are respectively installed on both sides of the first tube shell 1-2. The first end cap 1-3 is installed on one side of the first capillary structure 1-1 and closes one end of the first liquid trunk 1-1-2, so that the through first liquid trunk 1-1-2 forms a blind hole. The first connector 1-5 is installed on the other side of the first capillary structure 1-1. The first bayonet tube 1-6 is installed in the first liquid trunk 1-1-2 of the first capillary structure 1-1 and is fixed by welding through the first liquid interface 1-5-4. The first bayonet tube 1-6 is connected to one end of the liquid pipeline 2-1.

[0080] The condensation section 3 includes a second capillary structure, a second tube shell, a second end cap, a second saddle, a second connector, and a second bayonet tube;

[0081] The second capillary structure includes a second steam channel and a second liquid trunk.

[0082] The outer diameter of the second capillary structure is interference-fitted with the inner diameter of the second tube shell. The second end cap and the second connector are respectively installed on both sides of the second tube shell. The second end cap is installed on one side of the second capillary structure and closes one end of the second liquid trunk, so that the through second liquid trunk forms a blind hole. The second connector is installed on the other side of the second capillary structure. The second bayonet tube is installed in the second liquid trunk of the second capillary structure and is fixed by welding through the second liquid interface. The second bayonet tube is connected to the other end of the liquid pipeline 2-1.

[0083] The first connector 1-5 includes a first steam passage 1-5-1, a first shell limiting groove 1-5-2, a first insulation section limiting groove 1-5-3, a first liquid interface 1-5-4, and a first steam interface 1-5-5.

[0084] The first shell 1-2 is installed in the first shell limiting groove 1-5-2, the first steam channel 1-5-1 is vertically connected to the first steam interface 1-5-5, the first steam channel 1-5-1 is connected to the first steam channel 1-1-1, and one end of the corrugated pipe 2-2 is fixed to the first insulation section limiting groove 1-5-3.

[0085] The second connector includes a second steam passage, a second shell limiting groove, a second insulation section limiting groove, a second liquid interface, and a second steam interface.

[0086] The second tube shell is installed in the second tube shell limiting groove, the second steam passage is vertically connected to the second steam interface, the second steam passage is connected to the second steam channel, and the other end of the corrugated pipe 2-2 is fixed to the second insulation section limiting groove.

[0087] The first saddle 1-4 includes a first shell mounting port 1-4-1, a first mounting foot 1-4-2, and a first contact surface 1-4-3; the first shell 1-2 is inserted into the first shell mounting port 1-4-1 and welded, the first mounting foot 1-4-2 is located on the side of the first saddle 1-4, and the first contact surface 1-4-3 is located at the bottom of the first saddle 1-4; the second saddle includes a second shell mounting port, a second mounting foot, and a second contact surface; the shell is inserted into the second shell mounting port and welded, the second mounting foot is located on the side of the second saddle, and the second contact surface is located at the bottom of the second saddle.

[0088] The first steam channel 1-1-1 and the first steam passage 1-5-1 have the same orientation and are connected.

[0089] The second steam channel and the second steam passage have the same orientation and are connected.

[0090] The liquid line 2-1 of the insulation section 2 is connected to the first piercing tube 1-6 of the evaporation section 1 and the second piercing tube of the condensation section 3. The diameters of the first liquid inlet 1-5-4 and the second liquid inlet are the same as the outer diameter of the liquid line 2-1.

[0091] The inner diameter of the corrugated pipe 2-2 is larger than the outer diameter of the liquid pipe 2-1. The corrugated pipe 2-2 is concentric with the liquid pipe 2-1. The corrugated pipe 2-2 is connected to the evaporation section 1 and the condensation section 3 by welding with the first insulation section limiting groove 1-5-3 and the second insulation section limiting groove.

[0092] The first contact surface 1-4-3 of the evaporation section 1 is connected to the heat source through the first mounting foot 1-4-2, and the second contact surface of the condensation section 3 is connected to the cold source through the second mounting foot.

[0093] The flexible heat pipe is filled with working fluid. When the evaporation section 1 receives heat from the outside, the working fluid evaporates on the outer surface of the first capillary structure 1-1. The steam enters the cavity formed by the inner wall of the bellows 2-2 and the outer wall of the liquid pipe 2-1 through the first steam channel 1-1-1, the first steam passage 1-5-1 of the first joint 1-5, and the pressure difference. Driven by the pressure difference, the steam enters the condensation section 3 along the insulation section 2.

[0094] After the steam receives external cooling, it condenses into liquid on the outer surface of the second capillary structure in the condensation section 3. The capillary force of the second capillary structure transports the working liquid to the second liquid main channel. Subsequently, the liquid working liquid is transported from the condensation section 3 back to the evaporation section 1 through the liquid pipeline 2-1, thus forming a closed self-circulating two-phase flow.

[0095] Example 2

[0096] In one specific embodiment, such as Figure 4 , Figure 6 , Figure 8-12 As shown, a flexible heat pipe capable of transmitting large amounts of heat over long distances includes an evaporation section 1, an insulation section 2, and a condensation section 3. The evaporation section 1 and the condensation section 3 have the same structure, and the insulation section 2 in this embodiment has a double-tube structure.

[0097] The dual-pipe structure includes a liquid pipe 2-1 and a vapor pipe 2-3; the liquid pipe 2-1 runs through the dual-pipe structure and connects the evaporation section 1 and the condensation section 3; the vapor pipe 2-3 runs through the dual-pipe structure and connects the evaporation section 1 and the condensation section 3; the liquid pipe 2-1 and the vapor pipe 2-3 are independent of each other.

[0098] Evaporation section 1 includes a first capillary structure 1-1, a first tube shell 1-2, a first end cap 1-3, a first saddle 1-4, a first connector 1-5, and a first bayonet tube 1-6.

[0099] The first capillary structure 1-1 is a porous material with characteristics of small pore size, high porosity, high permeability, and low equivalent thermal conductivity. The first capillary structure 1-1 is a through-hole cylindrical shape with a first steam channel 1-1-1 machined on the outer surface and a central through hole as a first liquid main channel 1-1-2.

[0100] The outer diameter of the first capillary structure 1-1 is press-fitted with the inner diameter of the first tube shell 1-2. The first end cap 1-3 and the first connector 1-5 are respectively installed on both sides of the first tube shell 1-2. The first end cap 1-3 is installed on one side of the first capillary structure 1-1 and closes one end of the first liquid trunk 1-1-2, so that the through first liquid trunk 1-1-2 forms a blind hole. The first connector 1-5 is installed on the other side of the first capillary structure 1-1. The first bayonet tube 1-6 is installed in the first liquid trunk 1-1-2 of the first capillary structure 1-1 and is fixed by welding through the first liquid interface 1-5-4. The first bayonet tube 1-6 is connected to one end of the liquid pipeline 2-1.

[0101] The condensation section 3 includes a second capillary structure, a second tube shell, a second end cap, a second saddle, a second connector, and a second bayonet tube.

[0102] The second capillary structure includes a second steam channel and a second liquid trunk.

[0103] The outer diameter of the second capillary structure is interference-fitted with the inner diameter of the second tube shell. The second end cap and the second connector are respectively installed on both sides of the second tube shell. The second end cap is installed on one side of the second capillary structure and closes one end of the second liquid trunk, so that the through second liquid trunk forms a blind hole. The second connector is installed on the other side of the second capillary structure. The second bayonet tube is installed in the second liquid trunk of the second capillary structure and is fixed by welding through the second liquid interface. The second bayonet tube is connected to the other end of the liquid pipeline 2-1.

[0104] The first connector 1-5 includes a first steam channel 1-5-1, a first shell limiting groove 1-5-2, a first insulation section limiting groove 1-5-3, a first liquid interface 1-5-4, and a first steam interface 1-5-5. The first liquid interface 1-5-4 is located at the center of the first connector 1-5, and the first steam interface 1-5-5 is located above the first liquid interface 1-5-4. The first steam channel 1-5-1 is perpendicular to and connected to the first steam interface 1-5-5, and one end of the steam pipeline 2-3 is fixed to the first insulation section limiting groove 1-5-3.

[0105] The second connector includes a second steam passage, a second shell limiting groove, a second insulation section limiting groove, a second liquid interface, and a second steam interface; the second liquid interface is located at the center of the second connector, the second steam interface is located above the second liquid interface, the second steam passage is perpendicular to and connected to the second steam interface, and the other end of the steam pipeline 2-3 is fixed to the second insulation section limiting groove.

[0106] The first saddle 1-4 includes a first shell mounting port 1-4-1, a first mounting foot 1-4-2, and a first contact surface 1-4-3; the first shell 1-2 is inserted into the first shell mounting port 1-4-1 and welded, the first mounting foot 1-4-2 is located on the side of the first saddle 1-4, and the first contact surface 1-4-3 is located at the bottom of the first saddle 1-4; the second saddle includes a second shell mounting port, a second mounting foot, and a second contact surface; the second shell is inserted into the second shell mounting port and welded, the second mounting foot is located on the side of the second saddle, and the second contact surface is located at the bottom of the second saddle.

[0107] The liquid line 2-1 of the insulation section 2 is connected to the first piercing tube 1-6 of the evaporation section 1 and the second piercing tube of the condensation section 3. The diameters of the first liquid inlet 1-5-4 and the second liquid inlet are the same as the outer diameter of the liquid line 2-1.

[0108] Steam pipe 2-3 is welded to the evaporation section 1 and the condensation section 3 via the first insulation section limiting groove 1-5-3 and the second insulation section limiting groove. The outer diameter of steam pipe 2-3 is the same as the diameter of the first steam interface 1-5-5 and the second steam interface.

[0109] The first contact surface 1-4-3 of the evaporation section 1 is connected to the heat source through the first mounting foot 1-4-2, and the second contact surface of the condensation section 3 is connected to the cold source through the second mounting foot.

[0110] The flexible heat pipe is filled with working fluid. When the evaporation section 1 receives heat from the outside, the working fluid evaporates on the outer surface of the first capillary structure 1-1. The steam enters the steam pipe 2-3 through the first steam channel 1-1-1 and the first steam passage 1-5-1 of the first joint 1-5. Driven by the pressure difference, the steam enters the condensation section 3 through the adiabatic section 2. After receiving external cooling, the steam condenses into liquid on the outer surface of the second capillary structure of the condensation section 3. The capillary force of the second capillary structure transports the working fluid to the second liquid trunk. The liquid working fluid is transported back to the evaporation section 1 from the condensation section 3 by the liquid pipe 2-1, thus forming a closed self-circulating two-phase flow.

Claims

1. A flexible heat pipe capable of transmitting large amounts of heat over long distances, comprising an evaporation section, an insulation section, and a condensation section; wherein the two ends of the insulation section are respectively connected to the evaporation section and the condensation section; characterized in that, The insulation section includes a concentric tube structure; The concentric tube structure includes a liquid pipeline and a corrugated pipe; The liquid pipeline and the bellows are concentric, and the inner diameter of the bellows is larger than the outer diameter of the liquid pipeline. or, The insulation section includes a double-tube structure; The dual-pipe structure includes a liquid pipeline and a vapor pipeline; The liquid pipeline runs through the double-pipe structure and connects the evaporation section and the condensation section; The steam pipe runs through the double-pipe structure and connects the evaporation section and the condensation section; The liquid pipeline and the steam pipeline are independent of each other; The evaporation section includes a first capillary structure, a first tube shell, a first end cap, a first saddle, a first connector, and a first bayonet tube; The first capillary structure includes a first vapor channel and a first liquid channel; the first liquid channel extends through the first capillary structure; the first vapor channel is located on the outer surface of the first capillary structure. The outer diameter of the first capillary structure is interference-fitted with the inner diameter of the first tube shell. The first end cap and the first connector are respectively installed on both sides of the first tube shell. The first end cap is installed on one side of the first capillary structure and closes one end of the first liquid main channel. The first connector is installed on the other side of the first capillary structure. The first bayonet tube is installed in the first liquid main channel and is connected to one end of the liquid pipeline. The condensation section includes a second capillary structure, a second tube shell, a second end cap, a second saddle, a second connector, and a second bayonet tube; The second capillary structure includes a second vapor channel and a second liquid channel; the second liquid channel extends through the second capillary structure; the second vapor channel is located on the outer surface of the second capillary structure. The outer diameter of the second capillary structure is interference-fitted with the inner diameter of the second tube shell. The second end cap and the second connector are respectively installed on both sides of the second tube shell. The second end cap is installed on one side of the second capillary structure and closes one end of the second liquid trunk. The second connector is installed on the other side of the second capillary structure. The second piercing tube is installed inside the second liquid trunk and connects to the other end of the liquid pipeline. When the insulation section includes a concentric tube structure: The first connector includes a first steam passage, a first shell limiting groove, a first insulation section limiting groove, a first liquid interface, and a first steam interface; The first tube shell is installed in the first tube shell limiting groove, the first steam passage is vertically connected to the first steam interface, the first steam passage is connected to the first steam channel, and one end of the corrugated pipe is fixed to the first insulation section limiting groove. The second connector includes a second steam passage, a second shell limiting groove, a second insulation section limiting groove, a second liquid interface, and a second steam interface; The second tube shell is installed in the second tube shell limiting groove, the second steam passage is vertically connected to the second steam interface, the second steam passage is connected to the second steam channel, and the other end of the corrugated pipe is fixed to the second insulation section limiting groove. When the insulation section includes a double-tube structure: The first joint includes a first steam passage, a first shell limiting groove, a first insulation section limiting groove, a first liquid interface, and a first steam interface; The first liquid interface is located at the center of the first connector, the first steam interface is located above the first liquid interface, the first steam channel is perpendicular to and connected to the first steam interface, and one end of the steam pipeline is fixed to the limiting groove of the first insulation section. The second connector includes a second steam passage, a second shell limiting groove, a second insulation section limiting groove, a second liquid interface, and a second steam interface. The second liquid interface is located at the center of the second connector, the second steam interface is located above the second liquid interface, the second steam channel is perpendicular to and connected to the second steam interface, and the other end of the steam pipeline is fixed to the limiting groove of the second insulation section. The flexible heat pipe has capillary structures only in the evaporation section and the condensation section, and only transmission pipes in the insulation section, so as to realize the large heat and long-distance transmission of the flexible heat pipe.

2. The flexible heat pipe capable of transmitting large amounts of heat over long distances according to claim 1, characterized in that, The first saddle includes a first housing mounting port, a first mounting foot, and a first contact surface; the first housing is inserted into the first housing mounting port and welded, the first mounting foot is located on the side of the first saddle, and the first contact surface is located at the bottom of the first saddle; The second saddle includes a second housing mounting port, a second mounting foot, and a second contact surface; the second housing is inserted into the second housing mounting port and welded, the second mounting foot is located on the side of the second saddle, and the second contact surface is located at the bottom of the second saddle.

3. The flexible heat pipe capable of transmitting large amounts of heat over long distances according to claim 1, characterized in that, The evaporation section has the same structure as the condensation section.

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