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CN-118023844-B - Heat pipe processing method

CN118023844BCN 118023844 BCN118023844 BCN 118023844BCN-118023844-B

Abstract

The application relates to a heat pipe processing method which comprises the following steps of selecting a long pipe, connecting one end of the long pipe with a vacuumizing device, injecting liquid working medium into the long pipe and discharging non-condensable gas, clamping and sealing one end of the long pipe far away from the vacuumizing device, starting the vacuumizing device to suck the liquid working medium in the long pipe and enable the liquid level of the working medium in the long pipe to be lowered to a first preset height, clamping and sealing the first preset position of the long pipe, clamping off the long pipe from the first preset position, starting the vacuumizing device to continuously suck the liquid working medium in the long pipe and enable the liquid level of the working medium in the long pipe to be lowered to a second preset height, clamping and sealing the second preset position of the long pipe, clamping off the long pipe from the second preset position, and the like until manufacturing of a required number of heat pipes is completed. The heat pipe processing method provided by the application solves the problem of lower processing efficiency of the heat pipe manufacturing method.

Inventors

  • CHAI ZHONGHUA
  • XI JUNBIN
  • CHU LIYA
  • ZHANG DINGGE
  • SHI TINGTING
  • LU GUODONG

Assignees

  • 浙江银轮机械股份有限公司

Dates

Publication Date
20260505
Application Date
20240119

Claims (10)

  1. 1. The heat pipe machining method is characterized by comprising the following steps of: Selecting a long tube (100), wherein the length of the long tube (100) is more than or equal to 2 times of the length of a single heat pipe (110) to be processed, and the long tube (100) is used for manufacturing a shell of the heat pipe (110); Connecting one end of the long tube (100) with a vacuumizing device (200), injecting liquid working medium into the long tube (100) and extruding non-condensable gas in the long tube (100), wherein the vertical height of one end of the long tube (100) connected with the vacuumizing device (200) is smaller than the vertical height of one end of the long tube (100) far away from the vacuumizing device (200); Clamping an end of the long tube (100) far away from the vacuumizing device (200) by using an external tool, and sealing the end of the long tube (100) far away from the vacuumizing device (200); Starting the vacuumizing device (200) to suck liquid working medium in the long tube (100) and enabling the liquid level of the working medium in the long tube (100) to be reduced to a first preset height; Clamping a first preset position of the long tube (100) by using an external tool, and sealing the first preset position of the long tube (100), wherein the distance between the first preset position and the end part of the long tube (100) far away from one end of the vacuumizing device (200) is the length of a first heat pipe (110); Pinching off the long tube (100) from a first preset position by using an external tool to finish the manufacture of the first heat tube (110); Starting the vacuumizing device (200) to continuously suck liquid working medium in the long tube (100), and enabling the liquid level of the working medium in the long tube (100) to be reduced to a second preset height; clamping a second preset position of the long tube (100) by using an external tool, and sealing the second preset position of the long tube (100), wherein the distance between the second preset position and the first preset position is the length of a second heat pipe (110); Pinching off the long tube (100) from a second preset position by using an external tool to finish the manufacture of a second heat tube (110); and so on until the fabrication of the desired number of heat pipes (110) is completed.
  2. 2. The heat pipe machining method according to claim 1, wherein the vacuum pumping device (200) includes a piston (240), a connecting rod (250), a first check valve (260), a driving element (270) and a liquid discharge pipe (280), the piston (240) is disposed at a bottom end of the long pipe (100) and is in movable sealing fit with an inner wall of the long pipe (100), and the piston (240) is connected to the driving element (270) through the connecting rod (250); A first one-way valve (260) is arranged in the piston (240), and when the driving element (270) drives the piston (240) to move towards the top end of the long tube (100), the first one-way valve (260) is in an open state, so that the driving element (270) can drive the piston (240) to move to a preset position through the connecting rod (250); The liquid discharge pipe (280) is communicated with the bottom end of the long pipe (100), when the driving element (270) drives the piston (240) to move towards the bottom end of the long pipe (100), the first one-way valve (260) is in a closed state, 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 liquid working medium on one side, close to the bottom end of the long pipe (100), of the piston (240) is discharged out of the long pipe (100) through the liquid discharge pipe (280).
  3. 3. The heat pipe processing method according to claim 2, wherein a second check valve is provided in the liquid discharge pipe (280) to allow the liquid working medium to flow unidirectionally along an end of the liquid discharge pipe (280) close to the long pipe (100) toward an end of the liquid discharge pipe (280) remote from the long pipe (100).
  4. 4. The heat pipe machining method of claim 2, wherein the driving element (270) is a cylinder, a motor, or an engine.
  5. 5. The heat pipe machining method according to claim 1, wherein the vacuum pumping device (200) includes a vacuum pump (210), and the vacuum pump (210) is connected to one end of the long pipe (100) for pumping the liquid working medium in the long pipe (100).
  6. 6. The heat pipe machining method according to claim 5, wherein the vacuumizing device (200) further comprises a multi-way valve (230), one end of the long pipe (100) is connected with the vacuum pump (210) through the multi-way valve (230), the number of the valve ports of the multi-way valve (230) is greater than or equal to three, the multi-way valve (230) can control the on-off between any two valve ports, the multi-way valve (230) is defined to comprise a first valve port, a second valve port and a third valve port, the first valve port of the multi-way valve (230) is communicated with one end of the long pipe (100), the second valve port of the multi-way valve (230) is communicated with the vacuum pump (210), and the third valve port of the multi-way valve (230) is used for being communicated with the liquid injection mechanism (220); The heat pipe processing method further comprises the following steps that the vertical height of one end of the long pipe (100) connected with the multi-way valve (230) is smaller than the vertical height of one end of the long pipe (100) far away from the multi-way valve (230), liquid working medium is injected into the long pipe (100) through the third valve port by utilizing the liquid injection mechanism (220), and non-condensable gas in the long pipe (100) is extruded in the process of filling the whole long pipe (100) from bottom to top.
  7. 7. The heat pipe machining method according to claim 5, wherein the vacuum pumping device (200) further comprises an inner pipe (290), one end of the inner pipe (290) is movably inserted into the long pipe (100) and is in movable sealing fit with the long pipe (100), the other end of the inner pipe (290) is connected with the vacuum pump (210), and the vacuum pump (210) can pump liquid working medium in the long pipe (100) through the inner pipe (290).
  8. 8. The heat pipe processing method according to claim 1, wherein the long pipe (100) is disposed vertically or the long pipe (100) is disposed obliquely with respect to a horizontal plane.
  9. 9. The heat pipe machining method according to claim 1, wherein the method of sealing the end of the long pipe (100) away from the evacuating device (200) is to seal and weld the end of the long pipe (100) away from the evacuating device (200).
  10. 10. The heat pipe machining method according to claim 1, wherein the method of sealing the first preset position of the long pipe (100) is to seal-weld the first preset position of the long pipe (100); and/or sealing the second preset position of the long tube (100) by performing sealing welding on the second preset position of the long tube (100).

Description

Heat pipe processing method Technical Field The application relates to the technical field of heat pipe processing, in particular to a heat pipe processing method. Background The heat pipe is a heat exchange element, the vacuum filling phase-changeable working medium is arranged in the heat pipe, and the heat pipe is mainly applied to various fields of aerospace, petrochemical industry, wind-solar energy storage, new energy vehicles, power equipment, electronic products and the like. The heat pipe is manufactured mainly by two technological methods, namely a vacuum pump evacuation method and a heating exhaust method. However, both the two manufacturing methods are aimed at processing and manufacturing the heat pipes with single independent structures, so that the processing efficiency of the method is low in the process of mass production of the heat pipes, which is not beneficial to mass production and manufacturing. Disclosure of Invention Based on this, it is necessary to provide a heat pipe processing method to solve the problem of low processing efficiency of the existing heat pipe manufacturing method. Selecting a long tube, wherein the length of the long tube is more than or equal to 2 times of the length of a single heat tube to be processed, and the long tube is used for manufacturing a shell of the heat tube; connecting one end of a long tube with a vacuumizing device, injecting liquid working medium into the long tube and extruding non-condensable gas in the long tube, connecting the long tube with the vacuumizing device, clamping one end of the long tube far away from the vacuumizing device by using an external tool, sealing the one end of the long tube far away from the vacuumizing device, starting the vacuumizing device to suck the liquid working medium in the long tube, enabling the liquid level of the working medium in the long tube to be lowered to a first preset height, clamping the first preset position of the long tube by using the external tool, sealing the first preset position of the long tube, enabling the distance between the first preset position and the end part of the long tube far away from the vacuumizing device to be the length of the first heat tube, clamping the long tube from the first preset position by using the external tool, completing the manufacture of the first heat tube, starting the vacuumizing device to continuously suck the liquid working medium in the long tube, enabling the liquid level in the long tube to be lowered to a second preset height, clamping the second preset position by using the external tool, enabling the liquid working medium in the long tube to be lowered to be at the second preset position, sealing the second preset position of the long tube, enabling the liquid working medium in the long tube to be closed by using the external tool, enabling the second preset position and enabling the distance between the second preset position and the first preset position to be the length of the first heat tube, enabling the long tube to be the first preset position to be the length of the first heat tube, and enabling the manufacture of the long tube to be manufactured to be the first heat tube, and enabling the long tube to be manufactured to be in a required length of the second heat tube, and between the long tube, and the long tube is manufactured. In one embodiment, the vacuumizing device comprises a piston, a connecting rod, a first one-way valve, a driving element and a liquid discharge pipe, wherein the piston is arranged at the bottom end of the long pipe and is in movable sealing fit with the inner wall of the long pipe, and the piston is connected with the driving element through the connecting rod. The piston is internally provided with a first one-way valve, and when the driving element drives the piston to move towards the top end of the long tube, the first one-way valve is in an open state, so that the driving element can drive the piston to move to a preset position through the connecting rod. The fluid-discharge tube is linked together in the bottom of long tube, and when driving element drive piston moved towards the bottom of long tube, first check valve was in the closed condition to make driving element can drive the piston through the connecting rod and remove the bottom to the long tube, and make the liquid working medium of piston near long tube bottom one side pass through the fluid-discharge tube and discharge the long tube. In one embodiment, a second one-way valve is provided in the drain tube to allow the liquid working medium to flow unidirectionally along the flow path from the end of the drain tube adjacent the long tube to the end of the drain tube remote from the long tube. In one of the embodiments, the driving element is a cylinder, a motor or an engine. In one embodiment, the vacuum pumping device comprises a vacuum pump connected to one end of the long tube for pumping the liquid working medium in the long tube. In one