Heat pipe processing method

Abstract

This application relates to a heat pipe processing method, which includes the following steps: selecting a long pipe; connecting one end of the long pipe to a vacuum device, injecting liquid working fluid into the long pipe and discharging non-condensable gases, with the vertical height of the end of the long pipe connected to the vacuum device being relatively low; clamping and sealing the end of the long pipe away from the vacuum device; activating the vacuum device to evacuate the liquid working fluid in the long pipe and lowering the liquid level in the long pipe to a first preset height; clamping and sealing the long pipe at a first preset position; cutting the long pipe off at the first preset position; activating the vacuum device to continue evacuating the liquid working fluid in the long pipe and lowering the liquid level in the long pipe to a second preset height; clamping and sealing the long pipe at a second preset position; cutting the long pipe off at the second preset position; and so on, until the required number of heat pipes are manufactured. The heat pipe processing method provided by this application solves the problem of low processing efficiency in heat pipe manufacturing methods.

Description

Technical Field

[0001] This application relates to the field of heat pipe processing technology, and in particular to a heat pipe processing method. Background Technology

[0002] A heat pipe is a heat exchange element containing a vacuum-filled phase-change fluid. Heat pipes are widely used in aerospace, petrochemicals, wind, solar, and energy storage, new energy vehicles, power equipment, and electronic products. There are two main manufacturing methods for heat pipes: vacuum pumping and heating / exhausting. However, both methods process individual, independent heat pipe structures. Therefore, in mass production, these methods have low processing efficiency and are not suitable for large-scale manufacturing. Summary of the Invention

[0003] Therefore, it is necessary to provide a heat pipe processing method to solve the problem of low processing efficiency in existing heat pipe manufacturing methods.

[0004] The heat pipe processing method provided in this application includes the following steps: selecting a long tube, the length of which is greater than or equal to twice the length of a single heat pipe to be processed, the long tube being used to manufacture the outer shell of the heat pipe; connecting one end of the long tube to a vacuum pumping device, injecting liquid working fluid into the long tube and squeezing out non-condensable gas inside the long tube, the vertical height of the end of the long tube connected to the vacuum pumping device being less than the vertical height of the end of the long tube away from the vacuum pumping device; clamping the end of the long tube away from the vacuum pumping device using external tools and sealing the end of the long tube away from the vacuum pumping device; starting the vacuum pumping device to evacuate the liquid working fluid inside the long tube and lowering the liquid level of the working fluid inside the long tube to a first preset height; clamping the long tube at a first preset position using external tools, and... The first heat pipe is manufactured by sealing off the first preset position of the long tube, the distance between the first preset position and the end of the long tube furthest from the vacuum device being the length of the first heat pipe; the long tube is then clamped off at the first preset position using an external tool, completing the manufacturing of the first heat pipe; the vacuum device is then activated to continue pumping the liquid working fluid inside the long tube, and the liquid level inside the long tube is lowered to a second preset height; the second preset position of the long tube is then clamped off at the second preset position using an external tool, and the second preset position of the long tube is sealed off, the distance between the second preset position and the first preset position being the length of the second heat pipe; the long tube is then clamped off at the second preset position using an external tool, completing the manufacturing of the second heat pipe; this process is repeated until the required number of heat pipes are manufactured.

[0005] In one embodiment, the vacuuming device includes a piston, a connecting rod, a first one-way valve, a drive element, and a drain pipe. The piston is located at the bottom end of a long tube and is movably sealed to the inner wall of the long tube. The piston is connected to the drive element via the connecting rod. The first one-way valve is located inside the piston. When the drive element drives the piston towards the top end of the long tube, the first one-way valve is open, allowing the drive element to drive the piston to a predetermined position via the connecting rod. The drain pipe is connected to the bottom end of the long tube. When the drive element drives the piston towards the bottom end of the long tube, the first one-way valve is closed, allowing the drive element to drive the piston to the bottom end of the long tube via the connecting rod, and causing the liquid working fluid near the bottom end of the long tube to be discharged through the drain pipe.

[0006] In one embodiment, a second one-way valve is provided in the drain pipe to allow the liquid working fluid to flow unidirectionally from the end of the drain pipe closer to the long pipe to the end of the drain pipe farther from the long pipe.

[0007] In one embodiment, the drive element is a cylinder, a motor, or an engine.

[0008] In one embodiment, the vacuuming device includes a vacuum pump connected to one end of a long tube for drawing liquid working fluid from inside the tube.

[0009] In one embodiment, the vacuuming device further includes a multi-port valve. One end of the long tube is connected to a vacuum pump via the multi-port valve. The multi-port valve has three or more valve ports and can control the on / off connection between any two valve ports. The multi-port valve is defined as having a first valve port, a second valve port, and a third valve port. The first valve port of the multi-port valve is connected to one end of the long tube, the second valve port is connected to the vacuum pump, and the third valve port is used to connect to a liquid injection mechanism. The heat pipe processing method further includes the following steps: ensuring that the vertical height of the end of the long tube connected to the multi-port valve is less than the vertical height of the end of the long tube furthest from the multi-port valve; injecting a liquid working fluid into the long tube through the third valve port using the liquid injection mechanism; and squeezing out non-condensable gases from inside the long tube as the liquid working fluid fills the entire long tube from bottom to top.

[0010] In one embodiment, the vacuum pumping device further includes an inner tube, one end of which is movably inserted into the long tube and is in a movably sealed fit with the long tube, and the other end of the inner tube is connected to a vacuum pump, which can extract liquid working fluid from the long tube through the inner tube.

[0011] In one embodiment, the long tube is arranged vertically, or the long tube is arranged at an angle relative to the horizontal plane.

[0012] In one embodiment, the method of sealing the end of the long tube away from the vacuum pumping device is to seal and weld the end of the long tube away from the vacuum pumping device.

[0013] In one embodiment, the method for sealing the first preset position of the long tube is to perform sealing welding on the first preset position of the long tube;

[0014] And / or, the method of sealing the second preset position of the long pipe is to perform sealing welding at the second preset position of the long pipe.

[0015] Compared with the prior art, the heat pipe processing method provided in this application can realize the movement of liquid working fluid in a long pipe by setting a vacuum device. Furthermore, all heat pipes can be formed by continuously processing different parts of a long pipe, thereby realizing continuous processing and manufacturing of heat pipes. Therefore, the heat pipe processing method provided in this application greatly improves the processing efficiency of heat pipes and is conducive to the large-scale production and manufacturing of heat pipes. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the assembly structure of a heat pipe fabrication method according to an embodiment of this application. Figure 1 ;

[0018] Figure 2 A schematic diagram of the assembly structure of a heat pipe fabrication method according to an embodiment of this application. Figure 2 ;

[0019] Figure 3 A schematic diagram of the assembly structure of a heat pipe processing method according to another embodiment of this application;

[0020] Figure 4 A schematic diagram of the assembly structure of a heat pipe processing method according to another embodiment of this application;

[0021] Figure 5 This is a schematic diagram of the assembly structure of a heat pipe processing method according to another embodiment of this application.

[0022] Reference numerals: 100, long tube; 110, heat pipe; 200, vacuum pump; 210, vacuum pump; 220, liquid injection mechanism; 230, multi-way valve; 240, piston; 250, connecting rod; 260, first check valve; 270, drive element; 280, drain pipe; 290, inner tube. Detailed Implementation

[0023] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] A heat pipe is a heat exchange element containing a vacuum-filled phase-change fluid. Heat pipes are widely used in aerospace, petrochemicals, wind, solar, and energy storage, new energy vehicles, power equipment, and electronic products. There are two main manufacturing methods for heat pipes: vacuum pumping and heating / exhausting. However, both methods process individual, independent heat pipe structures. Therefore, in mass production, these methods have low processing efficiency and are not suitable for large-scale manufacturing.

[0030] Please see Figures 1-5 To address the low processing efficiency of existing heat pipe manufacturing methods, this application provides a heat pipe 110 processing method, which includes the following steps:

[0031] First, select a long tube 100. The length of the long tube 100 is greater than or equal to twice the length of a single heat pipe 110. The long tube 100 is used to process the outer shell of the heat pipe 110. Furthermore, the material of the long tube 100 is a metal, such as copper alloy, stainless steel, or aluminum alloy, etc., which will not be listed here.

[0032] However, this is not the only option. In other embodiments, the material of the long tube 100 can also be other materials with high thermal conductivity, such as thermally conductive plastics, graphite and fiber materials, which will not be listed here.

[0033] It should be noted that the long tube 100 can be straight, that is, the long tube 100 is a long straight strip, but it is not limited to this. In order to reduce the space occupied by the long tube 100 during the processing, in other embodiments, the long tube 100 can also be curved or spiral, etc., which will not be listed here.

[0034] Then, clean the entire long tube 100 thoroughly and let it dry.

[0035] Next, one end of the long tube 100 is connected to the vacuum pumping device 200, liquid working fluid is injected into the long tube 100 and non-condensable gas is squeezed out of the long tube 100. The vertical height of the end of the long tube 100 connected to the vacuum pumping device 200 is less than the vertical height of the end of the long tube 100 away from the vacuum pumping device 200. Preferably, the long tube 100 is set vertically or approximately vertically. This can be understood as the long tube 100 being set completely vertically or inclined relative to the horizontal plane.

[0036] It should be noted that the long tube 100 can be tilted at a certain angle, and liquid working fluid can be injected from the bottom end of the long tube 100 (that is, the end of the long tube 100 that is connected to the vacuum device 200) so that the non-condensable gas in the long tube 100 can be discharged from the top end of the long tube 100.

[0037] Then, use external tools (including but not limited to pliers and clamps) to clamp the end of the long tube 100 away from the vacuum device 200 and seal the end of the long tube 100 away from the vacuum device 200.

[0038] Specifically, the method of sealing the end of the long tube 100 away from the vacuum device 200 can be to seal and weld the end of the long tube 100 away from the vacuum device 200 so that the end of the long tube 100 is completely welded. The sealing and welding method can be resistance welding, brazing or gas shielded welding, etc., which will not be listed here.

[0039] Then, the vacuum pumping device 200 is activated to pump the liquid working medium in the long tube 100 and lower the liquid level of the working medium in the long tube 100 to the first preset height.

[0040] Then, using external tools (including but not limited to pliers and hydraulic shears) to clamp the first preset position of the long tube 100 and seal the first preset position of the long tube 100, wherein the distance between the first preset position and the end of the long tube 100 away from the vacuum device 200 is the length of the first heat pipe 110.

[0041] Specifically, the method for sealing the first preset position of the long tube 100 can be to perform sealing welding at the first preset position of the long tube 100, so that the long tube 100 is completely welded to the first preset position.

[0042] Finally, using external tools (including but not limited to pliers and hydraulic shears), the long tube 100 is clamped off from the first preset position to complete the manufacturing of the first heat pipe 110.

[0043] Then, the vacuum pumping device 200 is activated to draw the liquid working medium in the long tube 100 and lower the liquid level of the working medium in the long tube 100 to the second preset height.

[0044] Then, the second preset position of the long tube 100 is clamped using an external tool, and the second preset position of the long tube 100 is sealed off, wherein the distance between the second preset position and the first preset position is the length of the second heat pipe 110.

[0045] Specifically, the method for sealing the second preset position of the long tube 100 can be to perform sealing welding at the second preset position of the long tube 100, so that the long tube 100 is completely welded to the second preset position.

[0046] Finally, the long tube 100 is clamped off from the second preset position using external tools to complete the manufacturing of the second heat pipe 110.

[0047] Repeat the above process until the required number of heat pipes 110 are manufactured.

[0048] Finally, when the last heat pipe 110 is manufactured, the remaining working fluid is extracted and recovered by the vacuum pump 200.

[0049] As can be seen from the above, by setting up a vacuum device 200, the liquid working fluid can move within the long tube 100. Furthermore, all heat pipes 110 can be formed by continuously processing different parts of a long tube 100, thereby achieving continuous processing and manufacturing of heat pipes 110. Therefore, the heat pipe 110 processing method provided in this application greatly improves the processing efficiency of heat pipes 110 and is beneficial to the large-scale production and manufacturing of heat pipes 110.

[0050] In one embodiment, the long tube 100 is a circular tube, but it is not limited to this. In other embodiments, the long tube 100 can also be a flat tube, an elliptical tube, or a polygonal tube, etc., which will not be listed here.

[0051] In one embodiment, such as Figure 3 and Figure 4 As shown, the vacuum pumping device 200 includes a vacuum pump 210, which is connected to one end of the long tube 100.

[0052] The vacuum pump 210 has a simple structure and is easy to operate, which helps to reduce the manufacturing difficulty of the heat pipe 110.

[0053] Furthermore, in one embodiment, as Figure 3As shown, the vacuum pumping device 200 also includes a multi-way valve 230. One end of the long tube 100 is connected to the vacuum pump 210 through the multi-way valve 230. It should be noted that the multi-way valve 230 has more than or equal to three valve ports, and the multi-way valve 230 can control the on / off connection between any two valve ports. The multi-way valve 230 is defined to include at least a first valve port, a second valve port, and a third valve port. The first valve port of the multi-way valve 230 is connected to one end of the long tube 100, the second valve port of the multi-way valve 230 is connected to the vacuum pump 210, and the third valve port of the multi-way valve 230 is used to connect to the liquid injection mechanism 220.

[0054] Furthermore, the processing method of heat pipe 110 also includes the following steps: The vertical height of the end of the long pipe 100 connected to the multi-way valve 230 is less than the vertical height of the end of the long pipe 100 furthest from the multi-way valve 230. Preferably, the long pipe 100 is vertically or approximately vertically positioned, and the multi-way valve 230 is connected to the bottom end of the long pipe 100. Then, a liquid working fluid is injected into the long pipe 100 through the third valve port using the injection mechanism 220, causing the non-condensable gas inside the long pipe 100 to be squeezed out as the liquid working fluid fills the entire long pipe 100 from bottom to top. It should be noted that the non-condensable gas inside the long pipe 100 is discharged through the end of the long pipe 100 furthest from the multi-way valve 230.

[0055] This design greatly reduces the difficulty of injecting liquid working fluid into the 100-meter long pipe.

[0056] In one embodiment, such as Figure 4 As shown, the vacuum pumping device 200 also includes an inner tube 290. One end of the inner tube 290 is movably inserted into the long tube 100 and is in a movably sealed fit with the long tube 100. The end of the inner tube 290 inserted into the long tube 100 can be set at the same height as the preset liquid level (including but not limited to the first preset height, the second preset height, etc.) in the long tube 100. The other end of the inner tube 290 is connected to a vacuum pump 210, which can extract the liquid working medium in the long tube 100 through the inner tube 290.

[0057] It should be noted that the inner diameter of the inner tube 290 is much smaller than that of the long tube 100, and the wall thickness of the inner tube 290 is extremely small. Therefore, the impact on the liquid level in the long tube 100 when the inner tube 290 is removed is almost negligible. Of course, to obtain the preset liquid level more accurately, the preset liquid level can be set slightly higher than the actual working fluid level to compensate for the height loss of the working fluid level after the inner tube 290 is removed.

[0058] With this configuration, when the liquid level of the working fluid in the long tube 100 drops to the preset level, the inner tube 290 can no longer draw the liquid working fluid from the long tube 100, thus keeping the liquid working fluid in the long tube 100 at the preset level. Specifically, when manufacturing the first heat pipe 110, the end of the inner tube 290 away from the vacuum pump 210 can be made to be at the same height as the first preset height. When manufacturing the second heat pipe 110, the inner tube 290 can be pulled towards the end closer to the vacuum pump 210 so that the end of the inner tube 290 away from the vacuum pump 210 is at the same height as the second preset height.

[0059] Therefore, it can be seen that by setting the inner tube 290, the liquid level in the long tube 100 can be maintained at the preset liquid level very accurately, which greatly improves the manufacturing precision of the heat pipe 110.

[0060] Furthermore, in one embodiment, when an inner tube 290 is provided inside the long tube 100, the liquid working medium can be injected either through the long tube 100 or through the inner tube 290.

[0061] When injecting liquid working fluid through inner tube 290, the end of inner tube 290 away from vacuum pump 210 can be positioned at the lowest point of long tube 100 so that liquid working fluid can be injected into long tube 100 from bottom to top.

[0062] It is important to note that the heating and degassing method cannot guarantee the accuracy of the quantity (measured by volume or weight) of the working fluid inside the heat pipe 110. That is, the heating and degassing method may remove too much working fluid, resulting in too little remaining fluid, or too little, resulting in too much remaining fluid. Conversely, when using the vacuum method to remove gas or liquid from the heat pipe 110, a vacuum state is also created inside the heat pipe 110. Therefore, ordinary vacuum methods require greater suction force, thus increasing the difficulty of vacuuming.

[0063] Therefore, it is necessary to provide a processing method for heat pipe 110 with higher manufacturing precision and lower difficulty to solve the above-mentioned technical problems.

[0064] Specifically, in one embodiment, such as Figure 5 As shown, the vacuum pumping device 200 includes a piston 240, a connecting rod 250, a first one-way valve 260, a drive element 270, and a drain pipe 280. The piston 240 is disposed at the bottom end of the long pipe 100 and is in a movable sealing fit with the inner wall of the long pipe 100. The piston 240 is connected to the drive element 270 through the connecting rod 250.

[0065] The piston 240 is provided with a first one-way valve 260. When the driving element 270 drives the piston 240 to move toward the top of the long tube 100 (the end away from the vacuum device 200), the first one-way valve 260 is in the open state, so that the driving element 270 can drive the piston 240 to move to a predetermined position through the connecting rod 250.

[0066] At this time, the liquid working fluid on both sides of the piston 240 can flow to each other through the first one-way valve 260. That is, as the piston 240 moves toward the top of the long tube 100, the liquid working fluid on the side of the piston 240 close to the top of the long tube 100 can flow toward the side of the piston 240 away from the top of the long tube 100 through the first one-way valve 260, so that the piston 240 can smoothly move toward the top of the long tube 100 to the predetermined position.

[0067] The drain pipe 280 is connected to the bottom end of the long pipe 100. When the drive element 270 drives the piston 240 to move toward the bottom end of the long pipe 100 (the end near the vacuum device 200), the first one-way valve 260 is closed, so that the drive element 270 can drive the piston 240 to move to the bottom end of the long pipe 100 through the connecting rod 250, and the liquid working medium on the side of the piston 240 near the bottom end of the long pipe 100 is discharged from the long pipe 100 through the drain pipe 280.

[0068] Since the piston 240 is located at the bottom end of the long tube 100, and the vertical height of the end of the long tube 100 connected to the piston 240 is lower, when the piston 240 moves to the bottom end of the long tube 100, the liquid working fluid inside the long tube 100 will move downwards due to gravity. That is, at this time, a vacuum will be formed at the top of the long tube 100. Thus, by simply clamping the long tube 100 at the first preset position using an external tool and sealing the first preset position, and finally using an external tool to cut the long tube 100 off from the first preset position, the manufacturing of the first heat pipe 110 can be completed. Repeating the above process can complete the manufacturing of subsequent heat pipes 110.

[0069] It should be noted that the predetermined position is related to the first preset height and the second preset height. Specifically, the amount of liquid working fluid at the predetermined position of piston 240 near the bottom end of long tube 100 is equal to the amount of liquid working fluid between the first preset height of long tube 100 and the top end of long tube 100.

[0070] With this configuration, on the one hand, by setting the first one-way valve 260, the piston 240 can be precisely moved to the desired predetermined position by the drive element 270, thereby achieving precise control of the amount of working fluid in the heat pipe 110. On the other hand, by directly driving the piston 240 through the drive element 270, there is no need to consider the problem of the difficulty in vacuuming caused by the pressure difference. As long as the power of the drive element 270 is large enough, the piston 240 can be pulled to move.

[0071] Furthermore, in one embodiment, the drive element 270 is a power element such as a cylinder, a motor, or an engine, which will not be listed here.

[0072] To prevent the backflow of liquid working fluid, in one embodiment, a second one-way valve (not shown) is provided in the drain pipe 280 to allow the liquid working fluid to flow unidirectionally from the end of the drain pipe 280 near the long pipe 100 to the end of the drain pipe 280 away from the long pipe 100, that is, to prevent the liquid working fluid from flowing back into the long pipe 100.

[0073] However, this is not the only one. In other embodiments, non-condensable gases from the outside can be prevented from entering the long pipe 100 by timely blocking the end of the drain pipe 280 away from the long pipe 100.

[0074] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A method for processing a heat pipe, characterized in that, The heat pipe processing method includes the following steps: Select a long tube (100), the length of which is greater than or equal to twice the length of a single heat pipe (110) to be processed, and the long tube (100) is used to manufacture the outer shell of the heat pipe (110); Connect one end of the long tube (100) to a vacuum pumping device (200), inject liquid working fluid into the long tube (100) and squeeze out the non-condensable gas in the long tube (100), the vertical height of the end of the long tube (100) connected to the vacuum pumping device (200) is less than the vertical height of the end of the long tube (100) away from the vacuum pumping device (200); Clamp the end of the long tube (100) away from the vacuum device (200) using an external tool, and seal the end of the long tube (100) away from the vacuum device (200); The vacuum device (200) is activated to draw the liquid working medium in the long tube (100) and lower the liquid level of the working medium in the long tube (100) to a first preset height. The first preset position of the long tube (100) is clamped with an external tool and the first preset position of the long tube (100) is sealed. The distance between the first preset position and the end of the long tube (100) away from the vacuum device (200) is the length of the first heat pipe (110). The long tube (100) is clamped off from the first preset position using external tools to complete the manufacturing of the first heat pipe (110); The vacuum device (200) is activated to continue pumping the liquid working medium in the long tube (100) and to lower the working medium level in the long tube (100) to a second preset height. The second preset position of the long tube (100) is clamped with an external tool and the second preset position of the long tube (100) is sealed. The distance between the second preset position and the first preset position is the length of the second heat pipe (110). The long tube (100) is clamped off from the second preset position using external tools to complete the manufacturing of the second heat pipe (110); This process continues until the required number of heat pipes (110) are manufactured.

2. The heat pipe processing method according to claim 1, characterized in that, The vacuum pumping device (200) includes a piston (240), a connecting rod (250), a first one-way valve (260), a drive element (270), and a drain pipe (280). The piston (240) is disposed at the bottom end of the long tube (100) and is in a movable sealing fit with the inner wall of the long tube (100). The piston (240) is connected to the drive element (270) through the connecting rod (250). The piston (240) is provided with a first one-way valve (260). When the driving element (270) drives the piston (240) to move toward the top of the long tube (100), the first one-way valve (260) is in the open state, so that the driving element (270) can drive the piston (240) to move to a predetermined position through the connecting rod (250). The drain pipe (280) is connected to the bottom end of the long pipe (100). When the driving element (270) drives the piston (240) to move toward the bottom end of the long pipe (100), the first one-way valve (260) is closed, so that the driving element (270) can drive the piston (240) to move to the bottom end of the long pipe (100) through the connecting rod (250), and cause the liquid working fluid on the side of the piston (240) near the bottom end of the long pipe (100) to be discharged from the long pipe (100) through the drain pipe (280).

3. The heat pipe processing method according to claim 2, characterized in that, The drain pipe (280) is provided with a second one-way valve so that the liquid working medium flows unidirectionally from the end of the drain pipe (280) close to the long pipe (100) to the end of the drain pipe (280) away from the long pipe (100).

4. The heat pipe processing method according to claim 2, characterized in that, The drive element (270) is a cylinder, a motor, or an engine.

5. The heat pipe processing method according to claim 1, characterized in that, The vacuum device (200) includes a vacuum pump (210) connected to one end of the long tube (100) for pumping liquid working fluid inside the long tube (100).

6. The heat pipe processing method according to claim 5, characterized in that, The vacuum pumping device (200) also includes a multi-way valve (230). One end of the long tube (100) is connected to the vacuum pump (210) through the multi-way valve (230). The multi-way valve (230) has three or more valve ports. The multi-way valve (230) can control the opening and closing between any two valve ports. The multi-way valve (230) is defined to include a first valve port, a second valve port, and a third valve port. The first valve port of the multi-way valve (230) is connected to one end of the long tube (100). The second valve port of the multi-way valve (230) is connected to the vacuum pump (210). The third valve port of the multi-way valve (230) is used to connect to the liquid injection mechanism (220). The heat pipe processing method further includes the following steps: making the vertical height of the end of the long pipe (100) connected to the multi-way valve (230) less than the vertical height of the end of the long pipe (100) away from the multi-way valve (230); using the liquid injection mechanism (220) to inject liquid working fluid into the long pipe (100) through the third valve port; and making the non-condensable gas in the long pipe (100) squeezed out as the liquid working fluid fills the entire long pipe (100) from bottom to top.

7. The heat pipe processing method according to claim 5, characterized in that, The vacuum pumping device (200) also includes an inner tube (290), one end of which is movably inserted into the long tube (100) and is in a movably sealed fit with the long tube (100). The other end of the inner tube (290) is connected to the vacuum pump (210), which can extract the liquid working fluid in the long tube (100) through the inner tube (290).

8. The heat pipe processing method according to claim 1, characterized in that, The long tube (100) is set vertically, or the long tube (100) is set at an angle relative to the horizontal plane.

9. The heat pipe processing method according to claim 1, characterized in that, The method of sealing the end of the long tube (100) away from the vacuum device (200) is to seal and weld the end of the long tube (100) away from the vacuum device (200).

10. The heat pipe processing method according to claim 1, characterized in that, The method for sealing the first preset position of the long tube (100) is to perform sealing welding at the first preset position of the long tube (100); And / or, the method of sealing the second preset position of the long tube (100) is to perform sealing welding on the second preset position of the long tube (100).

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