CN219914135U - Large-diameter heat pipe with welded sealing tail - Google Patents
Large-diameter heat pipe with welded sealing tail Download PDFInfo
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- CN219914135U CN219914135U CN202320918120.4U CN202320918120U CN219914135U CN 219914135 U CN219914135 U CN 219914135U CN 202320918120 U CN202320918120 U CN 202320918120U CN 219914135 U CN219914135 U CN 219914135U
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- sealing
- pipe
- copper
- heat pipe
- tail
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- 238000007789 sealing Methods 0.000 title claims abstract description 54
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 84
- 229910052802 copper Inorganic materials 0.000 claims abstract description 66
- 239000010949 copper Substances 0.000 claims abstract description 66
- 238000003466 welding Methods 0.000 claims abstract description 25
- 238000009833 condensation Methods 0.000 claims abstract description 14
- 230000005494 condensation Effects 0.000 claims abstract description 14
- 238000001704 evaporation Methods 0.000 claims abstract description 11
- 230000008020 evaporation Effects 0.000 claims abstract description 11
- 238000009413 insulation Methods 0.000 claims abstract description 8
- 238000005245 sintering Methods 0.000 claims description 13
- 239000000843 powder Substances 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000012943 hotmelt Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The utility model discloses a large-diameter heat pipe with a welded tail, and belongs to the field of heat pipe application equipment. The large diameter heat pipe includes: the diameter of the copper pipe is 8-15mm, one end of the copper pipe is a closed end, and the other end of the copper pipe is an open end; arranging a copper powder layer on the inner wall of the copper pipe, and simultaneously sealing and welding a sealing column at the open end of the copper pipe; and copper pipes provided with sealing posts respectively include from an open end to a closed end: the device comprises an evaporation section, a heat insulation section and a condensation section. The heat pipe welded with the sealing post can realize the sealing welding of the large-diameter heat pipe without welding after shrinking the tail, thereby improving the welding speed and avoiding the occurrence of the phenomenon of tail leakage of the heat pipe after welding because of large internal space of the tail end; the integral type end shrinking process links are saved, the time is shortened, the manpower and material resources are saved, and the manufacturing cost is reduced.
Description
Technical Field
The utility model relates to the field of heat pipe equipment, in particular to a large-diameter heat pipe with a welded tail.
Background
The heat pipe is a heat radiating element, the hollow interior of the heat pipe is pumped into a negative pressure state, and proper liquid is filled, and the liquid has low boiling point and is easy to volatilize. The walls of the tube have a wick that is constructed of a capillary porous material. One end of the heat pipe is a evaporation end, the other end of the heat pipe is a condensation end, when one end of the heat pipe is heated, liquid in the capillary tube is rapidly vaporized, steam flows to the other end under the power of thermal diffusion, heat is released by condensation at the cold end, and the liquid flows back to the evaporation end along the porous material by capillary action, so that the circulation is not only performed until the temperatures at the two ends of the heat pipe are equal (at the moment, the thermal diffusion of the steam is stopped). This cycle is rapid and heat is conducted continuously.
The heat pipe is generally a copper pipe, the diameter of the heat pipe is generally between 3 and 15mm, the two ends of the heat pipe are closed, but the two ends are closed differently, in general, the end is directly sealed, the end is melted by high temperature to become a hemispherical end surface, and the other end is sealed after the inside of the copper pipe is processed.
However, the diameter of the universal heat pipe is 6mm, and the effect is good when the end part is sealed; when the diameter of the heat pipe is larger than 8mm, it is difficult to perform seal welding, and there is also a possibility that the tail end leaks after welding because the internal space of the tail end is large.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a large-diameter heat pipe with a welded tail.
The technical scheme of the utility model is as follows: a welded, tail-capped large diameter heat pipe comprising:
the diameter of the copper pipe is 8-15mm, one end of the copper pipe is a closed end, and the other end of the copper pipe is an open end;
arranging a copper powder layer on the inner wall of the copper pipe, and simultaneously sealing and welding a sealing column at the open end of the copper pipe; and
the copper pipe that is provided with the post that seals includes from open end to blind end respectively: the device comprises an evaporation section, a heat insulation section and a condensation section.
Further, the sealing column is made of copper. In general, in order to keep the same with the material of the copper pipe, a sealing column made of copper is selected, and other considerations are naturally taken into account, and other metal or nonmetal materials can be selected, so that the sealing welding of the open end can be ensured, and the shape conversion of the liquid in the heat pipe can be satisfied and born.
Further, the sealing column is a powder column or a solid column. The powder column is made of copper, the powder column is sintered according to the inner diameter of the copper pipe, and when the powder column is welded finally, the powder column is directly melted and sealed with the open end of the heat pipe, so that the sealing effect of the interior of the heat pipe is ensured; the setting of solid post is direct to match with the internal diameter of heat pipe, only need according to length cutting can, has avoided the loaded down with trivial details of processing.
Further, the sealing column is arranged in a column shape. The arrangement of the cylinder ensures that the connection with the open end is smooth, and the subsequent welding is finished.
Further, the sealing column is arranged in a round table or a cone, and is arranged along the inner plug of the open end of the copper pipe. The arrangement of the structure can ensure the stable connection of the sealing post and the open end.
Further, the outer side of the closed end of the copper pipe is hemispherical. The hemispherical arrangement ensures that the heat source has enough contact area when contacting with the heat pipe, and improves the heat dissipation effect.
Further, after the opening end of the copper pipe is provided with a sealing post, the outer side of the copper pipe is in a horizontal tail. The arrangement of the horizontal tail can reduce the length of an invalid section, increase the heat conduction efficiency and improve the performance of the whole heat pipe.
Further, the sealing post is arranged at the open end of the copper pipe through hot melt welding.
Further, the copper powder layer is arranged on the inner wall of the copper pipe through sintering.
Further, the evaporation section absorbs heat, steam in the heat insulation section flows to the condensation section, and condensed water after condensation flows to the heat absorption section along the copper powder layer. The liquid is changed into steam and flows, so that the conversion of the heat absorption and heat release processes is realized, and finally the efficient heat dissipation of the heat pipe is realized.
The beneficial technical effects of the utility model are as follows: the heat pipe welded with the sealing post can realize the sealing welding of the large-diameter heat pipe without welding after shrinking the tail, thereby improving the welding speed and avoiding the occurrence of the phenomenon of tail leakage of the heat pipe after welding because of large internal space of the tail end; the integral type end shrinking process links are saved, the time is shortened, the manpower and material resources are saved, and the manufacturing cost is reduced.
Drawings
FIG. 1 is a schematic perspective view of a welded-end-capped large diameter heat pipe.
FIG. 2 is an exploded schematic view of a welded-end large diameter heat pipe.
FIG. 3 is a partial schematic view of a welded open end of a large diameter heat pipe.
Fig. 4 is a schematic view of a copper tube.
Fig. 5 is a schematic view of the open end of fig. 4.
Fig. 6 is a schematic diagram of the working principle of the heat pipe.
In the figure:
1. copper pipe, 2, blind end, 3, open end, 4, copper powder layer, 5, seal post, 6, evaporation zone, 7, heat insulation section, 8, condensation section.
Detailed Description
In order that the manner in which the above recited features of the present utility model are attained and can be understood in detail, a more particular description of the utility model, briefly summarized below, may be had by reference to the appended drawings and examples, which are illustrated in their embodiments, but are not intended to limit the scope of the utility model.
Referring to fig. 1-6, a large diameter heat pipe with welded ends in this embodiment includes:
the diameter of the copper pipe 1 is 8-15mm, one end of the copper pipe 1 is a closed end 2, and the other end is an open end 3; a copper powder layer 4 is arranged on the inner wall of the copper pipe 1, and a sealing post 5 is arranged at the opening end 3 of the copper pipe 1 in a sealing and welding manner; and copper tubes 1 provided with sealing posts 5 respectively include, from an open end 3 to a closed end 2: an evaporation section 6, a heat insulation section 7 and a condensation section 8.
In a preferred embodiment, the sealing post 5 is made of copper. In general, in order to keep the same with the material of the copper tube 1, the sealing post 5 made of copper is selected, and of course, other considerations are taken into account, and other metal or nonmetal materials can be selected, so that the sealing welding of the open end 3 can be ensured, and the shape conversion of the liquid in the heat tube can be satisfied and borne.
In a preferred technical scheme, the sealing column 5 is a powder column or a solid column. The powder column is made of copper, the powder column is sintered according to the inner diameter of the copper pipe 1, and when the powder column is welded finally, the powder column is directly melted and sealed with the open end 3 of the heat pipe, so that the sealing effect of the interior of the heat pipe is ensured; the setting of solid post is direct to match with the internal diameter of heat pipe, only need according to length cutting can, has avoided the loaded down with trivial details of processing.
In a preferred embodiment, the sealing post 5 is cylindrical. The arrangement of the cylinder ensures that the connection with the open end 3 is smooth, and the subsequent welding is finished.
In a preferred technical scheme, the sealing column 5 is arranged in a round table or a cone, and is arranged along the inner plug of the open end 3 of the copper pipe 1. The arrangement of this structure can ensure stable connection of the sealing post 5 and the open end 3.
In a preferred technical scheme, the outer side of the closed end 2 of the copper pipe 1 is hemispherical. The hemispherical arrangement ensures that the heat source has enough contact area when contacting with the heat pipe, and improves the heat dissipation effect.
In a preferred technical scheme, after the opening end 3 of the copper pipe 1 is provided with a sealing post 5, the outer side of the copper pipe is in a horizontal tail. The arrangement of the horizontal tail can reduce the length of an invalid section, increase the heat conduction efficiency and improve the performance of the whole heat pipe.
In a preferred embodiment, the sealing post 5 is arranged at the open end 3 of the copper tube 1 by hot melt welding.
In a preferred embodiment, the copper powder layer 4 is arranged on the inner wall of the copper tube 1 by sintering.
In a preferred technical scheme, the evaporation section 6 absorbs heat, steam in the heat insulation section flows to the condensation section 8, and condensed water after condensation flows to the heat absorption section along the copper powder layer 4. The liquid is changed into steam and flows, so that the conversion of the heat absorption and heat release processes is realized, and finally the efficient heat dissipation of the heat pipe is realized.
The heat pipe welded by the sealing post 5 can realize the sealing welding of the large-diameter heat pipe without welding after shrinking the tail, thereby improving the welding speed and avoiding the occurrence of the phenomenon of tail leakage of the heat pipe after welding because of large internal space of the tail; the integral type end shrinking process links are saved, the time is shortened, the manpower and material resources are saved, and the manufacturing cost is reduced.
Such a heat pipe having copper powder layer sintered inside is called a sintered heat pipe, and its capillary structure is manufactured by sintering copper powder at high temperature. The most common manufacturing flow of the water medium sintering type heat pipe is as follows: copper powder with the purity of 99.5 percent is selected, and the particle size of the copper powder monomer is necessarily controlled to be 75-150 microns. Firstly, a tool is used for cleaning the inner wall of the copper pipe, flaws such as burrs are removed, and then the copper pipe is put into dilute sulfuric acid and is cleaned by ultrasonic waves. After cleaning, a copper pipe with smooth inner and outer walls and no oxide is obtained. At this time, a thin steel rod is inserted into the copper tube (a tool is needed to accurately fix the steel rod at the center of the copper tube so as to facilitate uniform filling of copper powder), and the bottom of the copper tube is temporarily sealed by the copper sheet. Then the pure copper powder can be poured into the copper tube. After filling, the material can be taken to a sintering furnace for sintering. Temperature control is also important during sintering. The peak temperature of the sintering furnace is controlled to be 800-850 DEG (the temperature is regulated according to the permeability regulation required by the heat pipe product). After sintering, an auxiliary tool is used for clamping the copper pipe, and the tool is used for drawing out the steel rod.
A layer of copper powder is sintered in the pipe wall of the copper pipe at high temperature, pure water is injected into the pipe as a heat conducting medium, and a vacuum-tight heat conducting pipe is formed after vacuumizing. The heat pipe is a new heat transfer element with extremely high heat conducting performance, and it transfers heat through evaporation and condensation of liquid in the totally enclosed vacuum pipe, and it uses siphon action and other fluid principles to play a good refrigeration effect. The heat-conducting material has the characteristics of extremely high heat conductivity, good isothermicity, arbitrary change of heat transfer areas on both cold and hot sides, long-distance heat transfer, controllable temperature and the like.
Basic principle of sintering: at high temperatures (below the melting point), the green solid particles bond to each other, the grains grow, the voids (pores) and grain boundaries gradually decrease, and through mass transfer, the total volume shrinks and the density increases, and finally a compact polycrystalline sintered body with a certain microstructure is formed, a phenomenon called sintering. Namely: the process of causing particles to bond, strength and densification and recrystallization is known as sintering, in which molecules (or atoms) in the solid state are attracted to each other and undergo migration by heating to obtain sufficient energy from the particles.
The heat pipe with the structure can ensure the production of the heat pipe with large diameter and provide reliable guarantee for efficient heat dissipation.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and it should be noted that it is possible for those skilled in the art to make several improvements and modifications without departing from the technical principle of the present utility model, and these improvements and modifications should also be regarded as the protection scope of the present utility model.
Claims (10)
1. A welded, tail-capped large diameter heat pipe, comprising:
the diameter of the copper pipe (1) is 8-15mm, one end of the copper pipe (1) is a closed end (2), and the other end of the copper pipe is an open end (3);
a copper powder layer (4) is arranged on the inner wall of the copper pipe (1), and a sealing column (5) is arranged at the opening end (3) of the copper pipe (1) in a sealing and welding manner; and
the copper pipe (1) provided with the sealing column (5) comprises from an open end (3) to a closed end (2) respectively: an evaporation section (6), a heat insulation section (7) and a condensation section (8).
2. The welded, tail-sealing large diameter heat pipe of claim 1, wherein: the sealing column (5) is made of copper.
3. The welded, tail-sealing large diameter heat pipe of claim 1, wherein: the sealing column (5) is a powder column or a solid column.
4. The welded, tail-sealing large diameter heat pipe of claim 1, wherein: the sealing column (5) is arranged in a column shape.
5. The welded, tail-sealing large diameter heat pipe of claim 1, wherein: the sealing column (5) is arranged in a round table or a cone, and is plugged inwards along the open end (3) of the copper pipe (1).
6. The welded, tail-sealing large diameter heat pipe of claim 1, wherein: the outer side of the closed end (2) of the copper pipe (1) is hemispherical.
7. The welded, tail-sealing large diameter heat pipe of claim 1, wherein: after the opening end (3) of the copper pipe (1) is provided with a sealing post (5), the outer side of the copper pipe is in a horizontal tail.
8. The welded, tail-sealing large diameter heat pipe of claim 1, wherein: the sealing column (5) is arranged at the open end (3) of the copper pipe (1) through hot melt welding.
9. The welded, tail-sealing large diameter heat pipe of claim 1, wherein: the copper powder layer (4) is arranged on the inner wall of the copper pipe (1) through sintering.
10. The welded, tail-sealing large diameter heat pipe of claim 1, wherein: the evaporation section (6) absorbs heat, steam in the heat insulation section flows to the condensation section (8), and condensed water after condensation flows to the heat absorption section along the copper powder layer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320918120.4U CN219914135U (en) | 2023-04-21 | 2023-04-21 | Large-diameter heat pipe with welded sealing tail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320918120.4U CN219914135U (en) | 2023-04-21 | 2023-04-21 | Large-diameter heat pipe with welded sealing tail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219914135U true CN219914135U (en) | 2023-10-27 |
Family
ID=88437019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320918120.4U Active CN219914135U (en) | 2023-04-21 | 2023-04-21 | Large-diameter heat pipe with welded sealing tail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219914135U (en) |
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2023
- 2023-04-21 CN CN202320918120.4U patent/CN219914135U/en active Active
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