Large-pipe-diameter heat pipe multi-gas-channel capillary tube, manufacturing method and production equipment

Abstract

The invention provides a large-pipe-diameter heat pipe multi-air-channel capillary tube, a manufacturing method and production equipment, and relates to the technical field of production and processing of heat exchange pipes with capillary structures. The capillary tube comprises a tube body and a capillary structure, and a mounting cavity is formed in the tube body; the capillary structure is arranged in the installation cavity, a plurality of ventilation cavities are formed between the capillary structure and the inner wall of the pipe body, and all the ventilation cavities penetrate through the length direction of the whole installation cavity. The heat exchanger has the effect of being high in heat transfer speed.

Description

Technical Field

[0001] The present application relates to the technical field of production and processing of heat exchange tubes with capillary structures, and in particular to a large-diameter heat pipe multi-gas channel capillary tube, a manufacturing method and a production device. Background Art

[0002] The heat exchange tube with a capillary structure is a heat transfer element that utilizes the principle of heat conduction and the rapid heat transfer properties of phase change media.

[0003] Existing heat exchange tubes generally include an outermost tube wall, a second outermost capillary structure and a central ventilation cavity. When the tube wall at one end of the heat pipe is heated, the heat transfer liquid in the capillary structure will evaporate to form steam. The steam will flow along the ventilation cavity to the other end of the heat pipe, condense back into liquid at this end and return to the heated end of the heat pipe along the capillary structure, thereby achieving rapid heat transfer between the two ends of the heat pipe.

[0004] However, since the heat transfer liquid close to the tube wall in the capillary structure will evaporate first compared to the heat transfer liquid far from the tube wall in the capillary structure, this part of the gas needs to first pass through the curved capillary in the capillary structure before entering the ventilation cavity, so that the speed at which this part of the gas flows to the other end of the heat pipe is slower, thereby reducing the heat transfer rate in the heat exchange tube.

[0005] In view of this, it is necessary to provide a large-diameter heat pipe multi-gas channel capillary, a manufacturing method and a production equipment. Summary of the invention

[0006] In order to solve the problem that the heat transfer liquid close to the tube wall in the capillary structure of the existing heat pipe needs to pass through the capillary tube to enter the ventilation cavity after being heated and evaporated, which makes this part of the gas flow to the other end of the heat pipe at a slow speed, thereby reducing the heat transfer speed in the heat exchange tube, the present application provides a large-diameter heat pipe multi-gas channel capillary tube, a manufacturing method and a production equipment.

[0007] In a first aspect, the present application provides a large-diameter heat pipe multi-gas channel capillary tube, which adopts the following technical solution: comprising a tube body and a capillary structure, wherein an installation cavity is formed inside the tube body; The capillary structure is arranged in the installation cavity, and a plurality of ventilation cavities are formed between the capillary structure and the inner wall of the tube body, and each of the ventilation cavities runs through the entire length direction of the installation cavity.

[0008] By adopting the above technical solution, the provision of multiple ventilation cavities enables the heat transfer liquid in various parts of the capillary structure to enter the nearest ventilation cavity after being heated, so as to increase the speed of this part of the gas rushing to the other end of the heat pipe, thereby increasing the heat transfer speed in the heat exchange tube.

[0009] The second aspect of the present application provides a method for manufacturing a large-diameter heat pipe multi-gas channel capillary, which adopts the following technical solution: S1. Select a suitable metal pipe and insert a core-fixing tool into the metal pipe until a powder filling gap matching the capillary structure is formed between the core-fixing tool and the inner wall of the metal pipe; S2, filling metal powder into the powder filling gap from one end of the metal pipe; S3, placing the metal tube into a sintering furnace for sintering until the metal powder is sintered to form the capillary structure, taking the metal tube out of the sintering furnace, and sealing the two ends of the metal tube after pulling out the core-fixing tool; S4. Using a press to flatten the tube wall of the metal tube.

[0010] By adopting the above technical solution, it is possible to produce a large-diameter heat pipe multi-gas channel capillary.

[0011] The third aspect of the present application provides a large-diameter heat pipe multi-gas channel capillary production device, which adopts the following technical solution: comprising the core positioning tool and the core inserting assembly, the metal pipe is formed with a large-diameter section, a reduced-diameter section and a small-diameter section inside, and the reduced-diameter section is located between the large-diameter section and the small-diameter section; The core inserting assembly can automatically insert the core fixing tool from the end of the metal pipe close to the large diameter section into the interior of the metal pipe and make the core fixing tool abut against the inner wall of the reduced diameter section.

[0012] By adopting the above technical solution, the core-setting tool can limit the position of the metal powder on the inner wall of the metal pipe so that the metal powder can be sintered to form a capillary structure; the core insertion assembly can automatically insert the core-setting tool from the end of the metal pipe close to the large diameter section into the interior of the metal pipe and make the core-setting tool abut against the inner wall of the reduced diameter section, so as to realize automatic insertion between the core-setting tool and the metal pipe.

[0013] Specifically, the core-setting tool is a core-setting rod, and a powder filling groove is provided on the upper rod body of the core-setting rod along its length direction. When the core-setting rod abuts against the inner wall of the reducing section, the powder filling gap is formed between the groove wall of the powder filling groove and the inner wall of the metal pipe, and a powder filling hole leading to the inside of the powder filling gap is formed between the groove wall of the powder filling groove and the pipe mouth of the metal pipe.

[0014] By adopting the above technical solution, the user can fill metal powder into the powder filling tank through the powder filling hole.

[0015] Furthermore, a cone tip is provided at one end of the core fixing rod, and when the core fixing rod abuts against the inner wall of the diameter-changing section, the cone tip is inserted into the small-diameter section.

[0016] By adopting the above technical solution, the arrangement of the cone tip can facilitate the insertion of the centering rod into the metal pipe.

[0017] Furthermore, a centering piece is provided on the groove wall on the side away from the cone tip in the powder filling groove. When the centering rod abuts against the inner wall of the variable diameter section, the centering piece can abut against the pipe opening on the side of the metal pipe close to the large diameter section and make the central axis of the centering rod coincide with the central axis of the metal pipe.

[0018] By adopting the above technical solution, the centering piece can abut against the pipe opening on one side of the metal pipe close to the large diameter section and make the central axis of the centering rod coincide with the central axis of the metal pipe, thereby realizing rapid centering of the centering rod in the metal pipe.

[0019] Furthermore, the centering piece is a wedge-shaped plate, one side of which is connected to the groove wall on the side of the powder filling groove away from its own groove, and the other side of the wedge plate is formed with an inclined surface, which gradually inclines in the direction from approaching to away from the cone tip towards the direction away from the centering rod.

[0020] By adopting the above technical solution, the wedge plate can abut against the inner wall of the metal pipe and assist the rapid centering of the centering rod in the metal pipe.

[0021] Furthermore, the core inserting assembly comprises a tube storage box, a tube conveyor belt, a core storage box, a core rod conveyor belt and a core abutment member. The tube storage box is used to store the metal tube, and the tube storage box is arranged at the starting end of the tube conveyor belt. The bottom of the tube storage box is provided with a tube outlet adapted to the metal tube, and the metal tube can fall from the tube outlet to the starting end of the tube conveyor belt in sequence. The core storage box is used to store the core rods, and the core storage box is arranged at the starting end of the core rod conveyor belt. The bottom of the core storage box is provided with a rod outlet adapted to the metal pipe, and the core rods can fall from the rod outlet to the starting end of the core rod conveyor belt in sequence; The core rod conveyor belt is arranged parallel to the tube conveyor belt, and the core rod on the core rod conveyor belt corresponds one to one with the metal tube on the tube conveyor belt, the core stop piece is arranged above the core rod conveyor belt, and the core rod on the core rod conveyor belt passing through the core stop piece can abut against the core stop piece and be pushed into the corresponding metal tube.

[0022] By adopting the above technical solution, after putting a handful of metal pipes and a handful of core rods into the pipe storage box and the core storage box respectively, these metal pipes will be arranged one by one on the pipe conveyor belt, and these core rods will also be arranged one by one on the core rod conveyor belt. With the continuous movement of the pipe conveyor belt and the core rod conveyor belt, the core rod on the core rod conveyor belt passing through the core abutment will abut against the core abutment and be pushed into the corresponding metal pipe, thereby realizing automatic connection between the core abutment tool and the metal pipe.

[0023] Further, the tube conveyor belt comprises a tube belt body, the tube belt body can be attached to the bottom of the tube storage box and block the tube outlet, and the tube belt body is provided with a plurality of tube receiving grooves spaced apart along its moving direction, one end of the tube receiving groove is closed, and the other end of the tube receiving groove is provided with a connecting hole leading to the outside, when the groove opening of the tube receiving groove is aligned with the tube outlet, the metal tube can fall from the tube storage box into the tube receiving groove, and the end of the metal tube close to the small diameter section thereof abuts against the groove wall of the tube receiving groove; The core rod conveyor belt includes a core rod belt body, which can fit the bottom of the core storage box and block the rod outlet, and the core rod belt body is provided with a plurality of rod receiving grooves spaced apart along its movement direction. When the grooves of the rod receiving grooves are aligned with the rod outlet, the core rod can fall from the core storage box into the rod receiving grooves.

[0024] By adopting the above technical scheme, when the tube belt moves along the material conveying direction, the multiple tube receiving grooves spaced apart on the tube belt will pass through the tube outlet in sequence. When the groove of a tube receiving groove is aligned with the tube outlet, a metal tube will fall into the tube receiving groove. When the tube belt located between two tube receiving grooves passes through the tube outlet, this part of the tube belt can abut against the tube outlet and seal the tube outlet, so that the metal tubes can be placed one by one onto the tube conveyor belt through the cooperation of the tube outlet and the tube receiving grooves. When the core rod belt moves along the material conveying direction, the multiple tube receiving grooves spaced apart on the core rod belt will pass through the tube outlet. The slots will pass through the rod outlet in sequence. When the slot of a rod receiving slot is aligned with the rod outlet, a core rod will fall into the rod receiving slot. When the core rod belt body located between the two rod receiving slots passes through the rod outlet, this part of the core rod belt body can abut against the rod outlet and seal the rod outlet, so that the core rods can be placed one by one onto the core rod conveyor belt through the cooperation of the rod outlet and the rod receiving slot; and when the core rod in the rod receiving slot abuts against the core abutment, the end of the core rod close to the pipe conveyor belt will pass through the connecting hole on the pipe receiving slot where the corresponding metal pipe is located and be inserted into the corresponding metal pipe.

[0025] Furthermore, the core-resisting member is an inclined plate, the plate surface of which is arranged in the vertical direction and gradually tilts toward the direction approaching the tube conveyor belt in the direction from approaching to away from the core storage box. The end of the core rod located in the rod receiving groove away from the tube conveyor belt can abut against the inclined plate and gradually approach the tube conveyor belt along the plate surface of the inclined plate as the core rod conveyor belt moves.

[0026] By adopting the above technical solution, the inclined plate can abut against the end of the core rod away from the pipe conveyor belt, so that the core rod can be gradually inserted into the corresponding metal pipe along the plate surface of the inclined plate as the core rod conveyor belt moves.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. It comprises a tube body and a capillary structure, wherein an installation cavity is formed inside the tube body; the capillary structure is arranged inside the installation cavity, and a plurality of ventilation cavities are formed between the capillary structure and the inner wall of the tube body, and each ventilation cavity runs through the entire length direction of the installation cavity. The arrangement of the plurality of ventilation cavities enables the heat transfer liquid in each part of the capillary structure to enter the nearest ventilation cavity after being heated, so as to increase the speed of this part of the gas rushing to the other end of the heat pipe, thereby increasing the heat transfer speed in the heat exchange tube; 2. It includes a core fixing tool and a core inserting assembly. The interior of the metal pipe is formed with a large diameter section, a reduced diameter section and a small diameter section, and the reduced diameter section is located between the large diameter section and the small diameter section; the core inserting assembly can automatically insert the core fixing tool from the end of the metal pipe close to the large diameter section into the interior of the metal pipe and make the core fixing tool abut against the inner wall of the reduced diameter section. The core fixing tool can limit the position of metal powder on the inner wall of the metal pipe so that the metal powder can be sintered to form a capillary structure; the core inserting assembly can automatically insert the core fixing tool from the end of the metal pipe close to the large diameter section into the interior of the metal pipe and make the core fixing tool abut against the inner wall of the reduced diameter section, so as to realize automatic insertion between the core fixing tool and the metal pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic cross-sectional view of a large-diameter heat pipe multi-gas channel capillary tube of the present application taken along its own radial direction; Figure 2 It is a three-dimensional diagram of a metal pipe and a core rod in a large-diameter heat pipe multi-gas channel capillary production device of the present application; Figure 3 is along Figure 2 A schematic cross-sectional view taken along the center axis of the center center rod; Figure 4 is along Figure 3 A schematic cross-sectional view taken along the AA direction; Figure 5It is a three-dimensional diagram of a large-diameter heat pipe multi-gas channel capillary production device of the present application; Figure 6 It is a top view of a large-diameter heat pipe multi-gas channel capillary production device of the present application; Figure 7 is along Figure 6 Schematic cross-sectional view taken along the BB direction.

[0029] Figure numerals: 1. tube body; 2. capillary structure; 21. ventilation cavity; 3. metal tube; 31. large diameter section; 32. variable diameter section; 33. small diameter section; 4. fixed core rod; 41. powder filling groove; 42. cone tip; 43. wedge plate; 5. core insert assembly; 51. tube storage box; 511. tube outlet; 52. tube conveyor belt; 521. tube belt body; 522. tube receiving groove; 53. core storage box; 531. rod outlet; 54. core rod conveyor belt; 541. core rod belt body; 542. rod receiving groove; 55. inclined plate. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-7 For further explanation: See also Figure 1 A large-diameter heat pipe multi-gas channel capillary tube includes a tube body 1 and a capillary structure 2. An installation cavity is formed inside the tube body 1; the capillary structure 2 is arranged in the installation cavity, and three ventilation cavities 21 are formed between the capillary structure 2 and the inner wall of the tube body 1. Each ventilation cavity 21 runs through the entire length direction of the installation cavity, so that the heat transfer liquid in each part of the capillary structure 2 can enter the nearest ventilation cavity 21 after being heated, so as to increase the speed of this part of the gas rushing to the other end of the heat pipe, thereby increasing the heat transfer speed in the heat exchange tube.

[0031] See also Figure 1 and Figure 2 Based on the structure of the large-diameter heat pipe multi-gas channel capillary tube, the second aspect of the present application further provides a method for manufacturing the large-diameter heat pipe multi-gas channel capillary tube, which is implemented by using the large-diameter heat pipe multi-gas channel capillary tube. The method specifically includes: S1. Select a suitable metal tube 3, wherein a large diameter section 31, a reduced diameter section 32 and a small diameter section 33 are formed inside the metal tube 3, wherein the reduced diameter section 32 is located between the large diameter section 31 and the small diameter section 33, and insert a core fixing tool into the metal tube 3 until a powder filling gap matching the capillary structure 2 is formed between the core fixing tool and the inner wall of the metal tube 3; S2, filling metal powder into the powder filling gap from one end of the metal pipe 3; S3, placing the metal tube 3 in a sintering furnace for sintering until the metal powder is sintered to form a capillary structure 2, taking the metal tube 3 out of the sintering furnace, and sealing the two ends of the metal tube 3 after pulling out the core-fixing tool; S4, using the press of the position limiting device to flatten the tube wall of the metal tube 3.

[0032] Since the method for manufacturing a large-diameter heat pipe multi-gas channel capillary in the present application is implemented by adopting the above-mentioned large-diameter heat pipe multi-gas channel capillary, it can also have all the technical effects of the above-mentioned large-diameter heat pipe multi-gas channel capillary, especially can realize the production of the above-mentioned large-diameter heat pipe multi-gas channel capillary. The above-mentioned metal pipe 3 can be a metal pipe with a large diameter section 31 of a diameter between 12-16 mm, and the thickness of the metal pipe after being flattened is between 1.8-2.0 mm.

[0033] See also Figure 2 , Figure 3 and Figure 4 Based on the structure of the large-diameter heat pipe multi-gas channel capillary and the method for manufacturing the large-diameter heat pipe multi-gas channel capillary, the third aspect of the present application further provides a large-diameter heat pipe multi-gas channel capillary production device, which can be used for the large-diameter heat pipe multi-gas channel capillary manufacturing method to produce a large-diameter heat pipe multi-gas channel capillary, the device specifically comprises: a core-setting tool and a core-insertion assembly 5, the core-setting tool is a core-setting rod 4, and a powder filling groove 41 is opened on the rod body of the core-setting rod 4 along its own length direction, when the core-setting rod 4 abuts against the inner wall of the reducing section 32, a powder filling gap is formed between the groove wall of the powder filling groove 41 and the inner wall of the metal pipe 3, and a powder filling hole leading to the inside of the powder filling gap is formed between the groove wall of the powder filling groove 41 and the pipe mouth of the metal pipe 3, so that the user can Metal powder is poured into the powder filling groove 41 through the powder filling hole; a cone tip 42 is provided at the bottom end of the core fixing rod 4, and when the core fixing rod 4 abuts against the inner wall of the reducing section 32, the cone tip 42 is inserted into the small diameter section 33, so as to facilitate the insertion of the core fixing rod 4 into the metal pipe 3; a centering piece is also provided on the core fixing rod 4, and the centering piece is a wedge plate 43, one side of the wedge plate 43 is connected to the groove wall on the side of the powder filling groove 41 away from its own groove, and the other side of the wedge plate 43 is formed with an inclined surface, and the inclined surface gradually inclines in the direction of approaching to away from the cone tip 42, so that the central axis of the core fixing rod 4 can coincide with the central axis of the metal pipe 3 through the cooperation of the wedge plate 43 and the rod body on the side of the core fixing rod 4 away from the powder filling groove 41, thereby realizing the rapid centering of the core fixing rod 4 in the metal pipe 3.

[0034] See also Figure 5 , Figure 6 and Figure 7The core inserting assembly 5 comprises a tube storage box 51, a tube conveyor belt 52, a core storage box 53, a core rod conveyor belt 54 and a core resisting member. The tube storage box 51 is used to store the metal tube 3, and the tube storage box 51 is arranged at the starting end of the tube conveyor belt 52. The bottom of the tube storage box 51 is provided with a tube outlet 511 adapted to the metal tube 3. The tube conveyor belt 52 comprises a tube belt body 521 and a motor for driving the tube belt body 521 to rotate. The tube belt body 521 can be attached to the bottom of the tube storage box 51 and block the tube outlet 511. A plurality of tube receiving grooves 522 are spaced apart on the tube belt body 521 along its moving direction. One end of the tube receiving groove 522 is closed, and the other end of the tube receiving groove 522 is provided with a connecting hole leading to the outside. When the notch of the tube receiving groove 522 is aligned with the tube outlet 511, the metal tube 3 It can fall into the tube receiving groove 522 from the tube storage box 51, and the end of the metal tube 3 close to its own small diameter section 33 abuts against the groove wall of the tube receiving groove 522. When the tube belt 521 moves along the material conveying direction, the multiple tube receiving grooves 522 spaced apart on the tube belt 521 will pass through the tube outlet 511 in sequence. When the groove opening of a tube receiving groove 522 is aligned with the tube outlet 511, a metal tube 3 will fall into the tube receiving groove 522. When the tube belt 521 located between two tube receiving grooves 522 passes through the tube outlet 511, this part of the tube belt 521 can abut against the tube outlet 511 and block the tube outlet 511, so that the metal tubes 3 can be dropped one by one onto the tube conveyor belt 52 through the cooperation of the tube outlet 511 and the tube receiving grooves 522.

[0035] See also Figure 5 , Figure 6 and Figure 7 The core storage box 53 is used to store the fixed core rod 4, and the core storage box 53 is arranged at the starting end of the core rod conveyor belt 54. The bottom of the core storage box 53 is provided with a rod outlet 531 adapted to the metal pipe 3; the core rod conveyor belt 54 includes a core rod belt body 541 and a motor for driving the core rod belt body 541 to rotate. The core rod belt body 541 can be attached to the bottom of the core storage box 53 and block the rod outlet 531, and the core rod belt body 541 is provided with a plurality of rod receiving grooves 542 at intervals along its moving direction. When the core rod belt body 541 moves along the material conveying direction, the core rod belt body 541 A plurality of rod receiving slots 542 opened at intervals will pass through the rod outlet 531 in sequence. When the slot of a rod receiving slot 542 is aligned with the rod outlet 531, a core rod 4 will fall into the rod receiving slot 542. When the core rod belt body 541 located between the two rod receiving slots 542 passes through the rod outlet 531, this part of the core rod belt body 541 can abut against the rod outlet 531 and block the rod outlet 531, so that the core rods 4 can be dropped one by one onto the core rod conveyor belt 54 through the cooperation of the rod outlet 531 and the rod receiving slots 542.

[0036] See also Figure 5 , Figure 6and Figure 7 The core rod conveyor belt 54 is arranged parallel to the tube conveyor belt 52, and the core fixing rod 4 on the core rod conveyor belt 54 corresponds one to one with the metal tube 3 on the tube conveyor belt 52; the core-resisting member is an inclined plate 55, which is arranged above the core rod conveyor belt 54, and the plate surface of the inclined plate 55 is arranged in the vertical direction and gradually tilts toward the direction close to the tube conveyor belt 52 in the direction from approaching to away from the core storage box 53. As the core rod conveyor belt 54 moves, the core fixing rod 4 on the core rod conveyor belt 54 passing through the inclined plate 55 will move along the plate surface of the inclined plate 55 toward the direction close to the tube conveyor belt 52, and the end of the core fixing rod 4 close to the tube conveyor belt 52 will pass through the connecting hole on the tube receiving groove 522 where the corresponding metal tube 3 is located and gradually be inserted into the corresponding metal tube 3, so that the core fixing tool and the metal tube 3 can be automatically plugged in.

[0037] Specifically, the rod receiving groove 542 and the tube receiving groove 522 can be set as grooves with a V-shaped cross section, so that the metal tube 3 and the core rod 4 falling into the groove can be limited in the material conveying direction of the tube conveyor belt 52 by the groove wall of the V-shaped groove, so that the metal tube 3 and the core rod 4 are not easy to roll out of the corresponding groove; the core rod conveyor belt 54 can also be set to have multiple sections in the direction of approaching to moving away from the tube conveyor belt 52, and the length of the core rod conveyor belt 54 closer to the tube conveyor belt 52 is shorter. The longer it is, the core rod 4 that has just fallen from the rod outlet 531 will lie horizontally in the rod receiving groove 542 on all the core rod conveyor belts 54, and the end of the core rod 4 away from the pipe conveyor belt 52 can be completely abutted against the inclined plate 55, that is, the bottom end of the inclined plate 55 must be lower than the top of each core rod belt body 541. As the surface of the inclined plate 55 continues to approach the pipe conveyor belt 52, the terminal ends of each core rod conveyor belt 54 that intersects with the surface of the inclined plate 55 in its own material conveying direction all stay in front of the inclined plate 55.

[0038] Through the above-mentioned arrangement, it can be ensured that the core rod 4 will be pushed by the inclined plate 55 along the width direction of the core rod conveyor belt 54 as the core rod conveyor belt 54 moves, and the bottom end of the inclined plate 55 will not be too high due to the inclined plate 55 being directly erected above the core rod belt body 541, and then the contact area between the end of the core rod 4 and the inclined plate 55 will be too small, resulting in the core rod 4 slipping out of the gap between the bottom end of the inclined plate 55 and the bottom wall of the rod receiving groove 542; it should be noted that between the half of the core rod 4 extending into the corresponding metal pipe 3, there must be at least two core rod belt bodies 541 to support the core rod 4, so as to ensure that the core rod 4 will not slip off the core rod belt body 541.

[0039] The implementation principle of a large-diameter heat pipe multi-gas channel capillary described in this application is: It includes a tube body 1 and a capillary structure 2, wherein an installation cavity is formed inside the tube body 1; the capillary structure 2 is arranged in the installation cavity, and three ventilation cavities 21 are formed between the capillary structure 2 and the inner wall of the tube body 1, and each ventilation cavity 21 runs through the entire length direction of the installation cavity, so that the heat transfer liquid in each part of the capillary structure 2 can enter the nearest ventilation cavity 21 after being heated, so as to increase the speed of this part of the gas rushing to the other end of the heat pipe, thereby increasing the heat transfer speed in the heat exchange tube.

[0040] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A large-diameter heat pipe multi-gas channel capillary tube, characterized in that: It comprises a tube body (1) and a capillary structure (2), wherein a mounting cavity is formed inside the tube body (1); The capillary structure (2) is arranged in the installation cavity, and a plurality of ventilation cavities (21) are formed between the capillary structure (2) and the inner wall of the tube body (1), and each of the ventilation cavities (21) runs through the entire length direction of the installation cavity.

2. A method for producing a large-diameter heat pipe multi-gas channel capillary, used to produce the above-mentioned large-diameter heat pipe multi-gas channel capillary, characterized in that: include: S1, selecting a suitable metal tube (3), and inserting a core-fixing tool into the metal tube (3), until a powder filling gap that matches the capillary structure (2) is formed between the core-fixing tool and the inner wall of the metal tube (3); S2, filling metal powder into the powder filling gap from one end of the metal tube (3); S3, placing the metal tube (3) in a sintering furnace for sintering until the metal powder is sintered to form the capillary structure (2), taking the metal tube (3) out of the sintering furnace, and sealing the two ends of the metal tube (3) after pulling out the core-fixing tool; S4. Using a press machine to flatten the tube wall of the metal tube (3).

3. A large-diameter heat pipe multi-gas channel capillary production device, used to cooperate with the above-mentioned large-diameter heat pipe multi-gas channel capillary production method to produce the above-mentioned large-diameter heat pipe multi-gas channel capillary, characterized in that: It comprises the core positioning tool and the core inserting assembly (5), wherein the metal pipe (3) is internally formed with a large diameter section (31), a reduced diameter section (32) and a small diameter section (33), and the reduced diameter section (32) is located between the large diameter section (31) and the small diameter section (33); The core inserting assembly (5) can automatically insert the core fixing tool from the end of the metal pipe (3) close to the large diameter section (31) into the interior of the metal pipe (3) and make the core fixing tool abut against the inner wall of the reduced diameter section (32).

4. The large-diameter heat pipe multi-gas channel capillary production equipment according to claim 3, characterized in that: The core fixing tool is a core fixing rod (4), and a powder filling groove (41) is provided on the upper rod body of the core fixing rod (4) along its own length direction. When the core fixing rod (4) abuts against the inner wall of the reducing section (32), the powder filling gap is formed between the groove wall of the powder filling groove (41) and the inner wall of the metal pipe (3), and a powder filling hole leading to the inside of the powder filling gap is formed between the groove wall of the powder filling groove (41) and the pipe mouth of the metal pipe (3).

5. The large-diameter heat pipe multi-gas channel capillary production equipment according to claim 4, characterized in that: A cone tip (42) is provided at one end of the centering rod (4), and when the centering rod (4) abuts against the inner wall of the diameter-changing section (32), the cone tip (42) is inserted into the small-diameter section (33).

6. The large-diameter heat pipe multi-gas channel capillary production equipment according to claim 5, characterized in that: A centering piece is provided on the groove wall on one side of the powder filling groove (41) away from the cone tip (42). When the centering rod (4) abuts against the inner wall of the variable diameter section (32), the centering piece can abut against the pipe opening on one side of the metal pipe (3) close to the large diameter section (31) and make the central axis of the centering rod (4) coincide with the central axis of the metal pipe (3).

7. The large-diameter heat pipe multi-gas channel capillary production equipment according to claim 6, characterized in that: The centering piece is a wedge-shaped plate (43), one side of which is connected to a groove wall of the powder filling groove (41) away from its own groove opening, and the other side of the wedge-shaped plate (43) is formed with an inclined surface, which gradually inclines in a direction away from the centering rod (4) in a direction approaching to and away from the cone tip (42).

8. The large-diameter heat pipe multi-gas channel capillary production equipment according to claim 7, characterized in that: The core inserting assembly (5) comprises a tube storage box (51), a tube conveyor belt (52), a core storage box (53), a core rod conveyor belt (54) and a core abutment member. The tube storage box (51) is used to store the metal tube (3), and the tube storage box (51) is arranged at the starting end of the tube conveyor belt (52). The bottom of the tube storage box (51) is provided with a tube outlet (511) adapted to the metal tube (3), and the metal tube (3) can fall from the tube outlet (511) to the starting end of the tube conveyor belt (52) in sequence. The core storage box (53) is used to store the core rod (4), and the core storage box (53) is arranged at the starting end of the core rod conveyor belt (54). The bottom of the core storage box (53) is provided with a rod outlet (531) adapted to the metal pipe (3), and the core rod (4) can be dropped from the rod outlet (531) to the starting end of the core rod conveyor belt (54) in sequence; The core rod conveyor belt (54) is arranged in parallel with the tube conveyor belt (52), and the core rod (4) on the core rod conveyor belt (54) corresponds one to one with the metal tube (3) on the tube conveyor belt (52), the core stop piece is arranged above the core rod conveyor belt (54), and the core rod (4) on the core rod conveyor belt (54) passing through the core stop piece can abut against the core stop piece and be pushed into the corresponding metal tube (3).

9. The large-diameter heat pipe multi-gas channel capillary production equipment according to claim 8, characterized in that: The tube conveyor belt (52) comprises a tube belt body (521), the tube belt body (521) can be attached to the bottom of the tube storage box (51) and block the tube outlet (511), and a plurality of tube receiving grooves (522) are arranged on the tube belt body (521) along its moving direction, one end of the tube receiving groove (522) is closed, and the other end of the tube receiving groove (522) is provided with a connecting hole leading to the outside, when the groove of the tube receiving groove (522) is aligned with the tube outlet (511), the metal tube (3) can fall from the tube storage box (51) into the tube receiving groove (522), and the end of the metal tube (3) close to the small diameter section (33) thereof abuts against the groove wall of the tube receiving groove (522); The core rod conveyor belt (54) comprises a core rod belt body (541), the core rod belt body (541) can be attached to the bottom of the core storage box (53) and block the rod outlet (531), and the core rod belt body (541) is provided with a plurality of rod receiving slots (542) spaced apart along its movement direction, and when the notches of the rod receiving slots (542) are aligned with the rod outlet (531), the fixed core rod (4) can fall from the core storage box (53) into the rod receiving slots (542).

10. The large-diameter heat pipe multi-gas channel capillary production equipment according to claim 9, characterized in that: The core-resisting member is an inclined plate (55), the plate surface of the inclined plate (55) being arranged in the vertical direction and gradually tilting in the direction of approaching to and away from the core storage box (53) in the direction of approaching to and away from the tube conveyor belt (52), and the end of the core fixing rod (4) located in the rod receiving groove (542) away from the tube conveyor belt (52) can abut against the inclined plate (55) and gradually approach the tube conveyor belt (52) along the plate surface of the inclined plate (55) as the core rod conveyor belt (54) moves.

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