CN218097347U - High-temperature heat pipe with large length-diameter ratio and capable of horizontally running - Google Patents
High-temperature heat pipe with large length-diameter ratio and capable of horizontally running Download PDFInfo
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- CN218097347U CN218097347U CN202222295056.7U CN202222295056U CN218097347U CN 218097347 U CN218097347 U CN 218097347U CN 202222295056 U CN202222295056 U CN 202222295056U CN 218097347 U CN218097347 U CN 218097347U
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Abstract
The utility model discloses a big length to diameter ratio horizontal movement high temperature heat pipe belongs to heat exchange technology field, has solved prior art and has had not effective support between imbibition core and the pipe inner wall, and perhaps imbibition core is more at the intraductal fixed required complex spare part, and the installation difficulty can't be applied to the problem of the less big length to diameter ratio high temperature heat pipe of diameter, has increased the rigidity of imbibition core when having reduced the installation degree of difficulty of big length to diameter ratio high temperature heat pipe imbibition core, and concrete scheme is as follows: a high-temperature heat pipe with a large length-diameter ratio and capable of horizontally running comprises a pipe shell, wherein a liquid absorption core is arranged inside the pipe shell, and a backflow channel support is arranged between the liquid absorption core and the inner wall of the pipe shell to form a backflow gap; the backflow channel support is a straight rib type support or a spiral type support arranged on the peripheral side of the liquid absorption core, or a boss arranged on the inner wall of the pipe shell.
Description
Technical Field
The utility model belongs to the technical field of the heat exchange technique and specifically relates to a big length-diameter ratio horizontal motion high temperature heat pipe.
Background
The working medium of the high-temperature heat pipe is usually liquid metal, and due to the fact that the working medium is high in viscosity and large in backflow resistance after being condensed into a liquid state, when the high-temperature heat pipe needs to be operated horizontally, the working liquid cannot flow back due to the fact that the length of the heat pipe is too long, and the heat transfer capacity of the heat pipe is affected. In the nuclear field, a high-temperature heat pipe is often a key device for heat transfer of a reactor, and in some specific reactor types, the high-temperature heat pipe is required to have a large length-diameter ratio, can horizontally operate and needs to ensure a strong heat transfer capacity. For the high-temperature heat pipe with small diameter and large length-diameter ratio, the diameter is small, the arrangement space of the liquid absorption core is small, the sufficient liquid backflow area cannot be ensured by increasing the thickness of the liquid absorption core, and the long length of the heat pipe brings large backflow resistance. In addition, for a high-temperature heat pipe with a large length-diameter ratio, the heat pipe needs to be refluxed by gravity, and the heat pipe is required to be operated in a horizontal state, so that gravity or gravity components cannot be used as a reflux driving force.
The inventor finds that the high-temperature heat pipe with the large length-diameter ratio has the problem that the wick is difficult to mount, the wick of the heat pipe is usually made of porous materials such as a wire mesh and a sintered porous layer, and when the diameter of the heat pipe is small and the length of the heat pipe is long, the wick is difficult to plug into the pipe shell due to poor rigidity of the wound wire mesh wick. However, for the sintered porous layer wick, because the length is long, the wick is difficult to be directly sintered on the inner wall of the tube, and the sintered wick is installed in the tube shell after being sintered, the sintered layer is too long and has a small thickness, so that the wick is very easy to break in the installation process.
Through retrieval, the utility model 'a high-efficiency heat pipe' (202021905804.3) provides a similar structure with a circulation groove, the wick structure is complex, an auxiliary cylinder and a clamping bulge are required to be matched for fixing the wick, the assembly difficulty is high, and the high-efficiency heat pipe is not suitable for a high-temperature heat pipe with a large length-diameter ratio and a small diameter;
a liquid metal high-temperature heat pipe (202010263198.8) proposes a heat pipe structure which adopts wicks with different forms at an evaporation section, a heat insulation section and a condensation section, and the structure adopts different wicks in the axial direction, so that the problem of local overheating of the heat pipe caused by the discontinuity of the wicks exists. The structure has no effective support between the liquid absorption core and the inner wall of the pipe, and the liquid absorption core sags under the action of gravity under the condition of horizontal operation and long length, so that local liquid can not flow back;
based on the background, the prior art has no effective support between the liquid suction core and the inner wall of the pipe, and the liquid suction core drops under the action of gravity under the conditions of horizontal operation and longer length, so that local liquid can not flow back, or the liquid suction core is fixed in the pipe and needs more matched parts, is difficult to install, and cannot be applied to the problem of the high-temperature heat pipe with the large length-diameter ratio and the small diameter.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a big length to diameter ratio horizontal motion high temperature heat pipe, increased the rigidity of imbibition core, reduced the installation degree of difficulty of big length to diameter ratio high temperature heat pipe imbibition core.
In order to achieve the above purpose, the present invention is realized by the following technical solution:
a high-temperature heat pipe with a large length-diameter ratio and capable of running horizontally comprises a pipe shell, wherein a liquid absorption core is arranged in the pipe shell, and a backflow channel support is arranged between the liquid absorption core and the inner wall of the pipe shell to form a backflow gap;
the backflow channel support is a straight rib type support or a spiral type support arranged on the peripheral side of the liquid absorption core, or a boss arranged on the inner wall of the pipe shell.
The horizontal running high-temperature heat pipe with the large length-diameter ratio is characterized in that the liquid absorption core is a wire-mesh-wound liquid absorption core or a sintered porous-layer liquid absorption core.
According to the horizontally-running high-temperature heat pipe with the large length-diameter ratio, the pipe shell is an axial welding pipe or a seamless steel pipe.
According to the horizontally-running high-temperature heat pipe with the large length-diameter ratio, the straight rib type supports are arranged on the periphery side of the wire mesh wound liquid absorption cores, and the straight rib type supports are multiple and are uniformly arranged along the periphery side of the wire mesh wound liquid absorption cores.
According to the horizontally-running high-temperature heat pipe with the large length-diameter ratio, the spiral supports are wound on the periphery of the silk screen wound liquid absorption core, and one or more spiral supports are arranged.
According to the horizontally-running high-temperature heat pipe with the large length-diameter ratio, the return channel support on the peripheral side of the wire mesh wound liquid absorption core is formed by the wire mesh.
According to the horizontally-running high-temperature heat pipe with the large length-diameter ratio, when the pipe shell is a seamless steel pipe, the liquid absorption core is formed by winding a wire mesh.
According to the horizontally-running high-temperature heat pipe with the large length-diameter ratio, when the pipe shell is an axial welded pipe, the liquid absorption core is a wire mesh-wound liquid absorption core or a sintered porous layer liquid absorption core.
According to the horizontally-running high-temperature heat pipe with the large length-diameter ratio, the boss is arranged on the axial welding pipe.
According to the horizontally-running high-temperature heat pipe with the large length-diameter ratio, the two ends of the pipe shell are provided with the end covers.
Above-mentioned the utility model has the advantages as follows:
the utility model discloses a special structural design supports this kind of easy mode of realizing through setting up backflow passage, has improved the reflux capacity of imbibition core, has improved the heat transfer capacity of big length-diameter ratio high temperature heat pipe. For the liquid absorption core wound by the silk screen and the arrangement of the backflow channel support, the rigidity of the liquid absorption core is increased, and the installation difficulty of the liquid absorption core of the high-temperature heat pipe with a large length-diameter ratio is reduced. For the sintered porous layer liquid absorption core, the problem that the sintered porous layer liquid absorption core is easy to break in the installation process is solved by adopting a mode of axially welding a pipe and prefabricating a backflow channel support.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
Fig. 1 is a front view of a horizontal high temperature heat pipe with a large length-diameter ratio according to an embodiment of the present invention.
Fig. 2 is a side view of a horizontally running high temperature heat pipe with a large length to diameter ratio according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a straight ribbed wick support in an embodiment of the invention.
Fig. 4 is a schematic diagram of a spiral wound wick support in an embodiment of the invention.
Fig. 5 is a structural schematic diagram of the prefabricated support of welded pipe in the embodiment of the present invention.
In the figure: the spacing or size between each other is exaggerated to show the location of the portions, and the illustration is merely for illustrative purposes.
Wherein: 1. the structure comprises a pipe shell, 2 parts of end covers, 3 parts of liquid absorbing cores, 31 parts of silk screen rolling liquid absorbing cores, 32 parts of sintering porous layer liquid absorbing cores, 4 parts of backflow channel supports, 41 parts of straight rib type supports, 42 parts of spiral type supports, and 43 parts of bosses.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, 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 invention belongs.
Just as the background art introduces, prior art has not effectively to support between imbibition core and the pipe inner wall, under horizontal motion and the longer condition of length, receives the effect of gravity imbibition core flagging, can lead to the unable backward flow of local liquid, perhaps imbibition core is more at the fixed required complex spare part in the pipe, and the installation difficulty can't be applied to the problem of the less big length to diameter ratio high temperature heat pipe of diameter, for solving technical problem as above, the utility model provides a big length to diameter ratio horizontal motion high temperature heat pipe.
Example one
In a typical embodiment of the present invention, referring to fig. 1-5, a high-temperature heat pipe with large length-diameter ratio and horizontal operation comprises a pipe shell 1 for horizontal placement, a liquid absorption core 3 disposed inside the pipe shell 1, a backflow channel support 4 disposed between the liquid absorption core 3 and the inner wall of the pipe shell 1 to form a backflow gap, and end caps 2 disposed at two ends of the pipe shell 1 for sealing.
The wick 3 is a wire-wound wick 31 or a sintered porous layer wick 32. The pipe shell can be an axial welding pipe or a seamless steel pipe. The return channel support is a straight rib support 41 or a spiral support 42 arranged on the periphery of the liquid absorbing core, or a boss 43 arranged on the inner wall of the pipe shell.
Specifically, as shown in fig. 3, when the wick 3 is a wire mesh wound wick 31, the tube housing may be made of an axially welded tube or a seamless steel tube. The return channel support is a straight rib type support 41 axially arranged along the peripheral side of the wire mesh-wound wick 31, the straight rib type support 41 is arranged along the peripheral direction of the heat pipe, and a set gap is reserved between adjacent straight rib type supports 41. The straight rib type supports are multiple and are uniformly arranged along the periphery of the silk screen rolled liquid absorbing cores, and the number of the straight rib type supports is set according to the rigidity requirement of the liquid absorbing cores.
The straight rib type support 41 is formed by a wire mesh and arranged on the periphery of the wire mesh wound wick, so that the rigidity of the wire mesh wound wick is enhanced, the installation is convenient, and the problem that the wound wire mesh wick is poor in rigidity and difficult to fill in a pipe shell is solved.
Further, as shown in fig. 4, when the wick is a wire mesh wound wick, the tube shell may be made of an axially welded tube or a seamless steel tube. The return channel is supported by spiral supports 42 axially arranged along the circumferential side of the wire-wound wick 31, and one or more spiral supports 42 are provided. When a plurality of spiral supports 42 are provided, the spiral supports 42 are uniformly arranged on the periphery of the silk screen wound wick.
It should be noted that, when the adopted pipe shell is a seamless steel pipe, the wick needs to be wound by a wire mesh, and a sintered porous wick cannot be adopted, because for a high-temperature heat pipe which runs horizontally with a large length-diameter ratio, the sintered layer is too long and has a small thickness, and the sintered layer is very easy to break in the installation process because the sintered layer is too long and has a small thickness.
When the adopted tube shell is an axial welded tube, the liquid absorption core can be a wire mesh rolled liquid absorption core or a sintered porous layer liquid absorption core.
As shown in fig. 5, when the sintered porous wick is used as the wick, the tube shell is an axial welded tube, that is, the tube shell is welded and formed along the axial direction of the tube shell after being rolled, the backflow channel support 4 cannot be arranged on the sintered porous wick, and the sintered layer is prevented from being broken in the installation process, so that the backflow channel support is a boss arranged on the axial welded tube, and the boss is in a long strip shape and is prefabricated in the axial direction of the axial welded tube in advance.
When the wick is a sintered porous layer wick 32, the heat pipe forming process comprises: sintering porous layer wick 32, axially welding pipe material preform boss 43, mounting sintered porous layer wick 32, and welding pipe molding are performed. The two ends of the tube shell are provided with end covers to form a sealed environment.
Further, when the wick 3 is a wire mesh rolled wick 31, the backflow channel support can be a straight rib type support or a spiral type support of a low mesh wire mesh, and a backflow channel support is formed between the rolled wire mesh wick 31 and the inner wall of the pipe shell 1. The low mesh silk screen has higher rigidity, can enhance the rigidity of the liquid absorption core, and reduces the installation difficulty of the rolled silk screen liquid absorption core.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A high-temperature heat pipe with a large length-diameter ratio and capable of running horizontally is characterized by comprising a pipe shell, wherein a liquid absorption core is arranged in the pipe shell, and a backflow channel support is arranged between the liquid absorption core and the inner wall of the pipe shell to form a backflow gap;
the backflow channel support is a straight rib type support or a spiral type support arranged on the peripheral side of the liquid absorption core, or a boss arranged on the inner wall of the pipe shell.
2. A high aspect ratio horizontally operating high temperature heat pipe according to claim 1 wherein the wick is a wire-wound wick or a sintered porous layer wick.
3. A large aspect ratio horizontally running high temperature heat pipe as claimed in claim 2 wherein the pipe casing is an axially welded pipe or a seamless steel pipe.
4. A high aspect ratio horizontally operating high temperature heat pipe according to claim 3 wherein the straight ribbed support is disposed around the wire mesh wound wick, and a plurality of the straight ribbed supports are disposed and arranged uniformly around the wire mesh wound wick.
5. A high aspect ratio horizontally operated high temperature heat pipe according to claim 3 wherein one or more spiral supports are wound around the wire mesh wound wick.
6. A horizontally operated high temperature heat pipe having a large length to diameter ratio as claimed in any one of claims 4 to 5 wherein the return flow path supports around the wire mesh wound wick are formed from wire mesh.
7. A horizontally operated high temperature heat pipe having a large length to diameter ratio as claimed in claim 3 wherein when the pipe casing is a seamless steel pipe, the wick is a wire mesh wound wick.
8. A large aspect ratio horizontally operated high temperature heat pipe according to claim 7 wherein when the shell is an axially welded tube, the wick is a wire mesh wound wick or a sintered porous layer wick.
9. A high aspect ratio horizontally running high temperature heat pipe according to claim 8 wherein the boss is provided on the axial weld tube.
10. A large aspect ratio horizontally operated high temperature heat pipe as claimed in claim 1 wherein end caps are provided at both ends of the tube shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222295056.7U CN218097347U (en) | 2022-08-30 | 2022-08-30 | High-temperature heat pipe with large length-diameter ratio and capable of horizontally running |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222295056.7U CN218097347U (en) | 2022-08-30 | 2022-08-30 | High-temperature heat pipe with large length-diameter ratio and capable of horizontally running |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218097347U true CN218097347U (en) | 2022-12-20 |
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ID=84450040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222295056.7U Active CN218097347U (en) | 2022-08-30 | 2022-08-30 | High-temperature heat pipe with large length-diameter ratio and capable of horizontally running |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218097347U (en) |
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2022
- 2022-08-30 CN CN202222295056.7U patent/CN218097347U/en active Active
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Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |