CN116793126B - Super high temperature heat pipe - Google Patents
Super high temperature heat pipe Download PDFInfo
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- CN116793126B CN116793126B CN202310739589.6A CN202310739589A CN116793126B CN 116793126 B CN116793126 B CN 116793126B CN 202310739589 A CN202310739589 A CN 202310739589A CN 116793126 B CN116793126 B CN 116793126B
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- heat pipe
- heat
- helium
- cylinder body
- wire mesh
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- 239000011148 porous material Substances 0.000 claims abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 34
- 239000007789 gas Substances 0.000 claims description 30
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 24
- 229910052751 metal Inorganic materials 0.000 claims description 23
- 239000002184 metal Substances 0.000 claims description 23
- 239000001307 helium Substances 0.000 claims description 21
- 229910052734 helium Inorganic materials 0.000 claims description 21
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 21
- 229910052757 nitrogen Inorganic materials 0.000 claims description 21
- 239000002131 composite material Substances 0.000 claims description 18
- 239000001257 hydrogen Substances 0.000 claims description 13
- 229910052739 hydrogen Inorganic materials 0.000 claims description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 229910052786 argon Inorganic materials 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 12
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- -1 aluminum-cobalt-chromium-iron-nickel Chemical compound 0.000 claims description 9
- CFQGDIWRTHFZMQ-UHFFFAOYSA-N argon helium Chemical compound [He].[Ar] CFQGDIWRTHFZMQ-UHFFFAOYSA-N 0.000 claims description 9
- AFAUWLCCQOEICZ-UHFFFAOYSA-N helium xenon Chemical compound [He].[Xe] AFAUWLCCQOEICZ-UHFFFAOYSA-N 0.000 claims description 9
- 229910052724 xenon Inorganic materials 0.000 claims description 9
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 9
- 239000012159 carrier gas Substances 0.000 claims description 7
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 claims description 6
- 229910000691 Re alloy Inorganic materials 0.000 claims description 6
- 229910001093 Zr alloy Inorganic materials 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 239000003870 refractory metal Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910002062 Hf-Nb-Ta alloy Inorganic materials 0.000 claims description 3
- 229910001257 Nb alloy Inorganic materials 0.000 claims description 3
- 229910001080 W alloy Inorganic materials 0.000 claims description 3
- ZATYNPNTYABVCY-UHFFFAOYSA-N [Co].[Cu].[Fe].[Cr].[Ni] Chemical compound [Co].[Cu].[Fe].[Cr].[Ni] ZATYNPNTYABVCY-UHFFFAOYSA-N 0.000 claims description 3
- WLJGZBCOAJOFIB-UHFFFAOYSA-N [Nb].[Zr].[Hf] Chemical compound [Nb].[Zr].[Hf] WLJGZBCOAJOFIB-UHFFFAOYSA-N 0.000 claims description 3
- TYURHCYSLHOQIV-UHFFFAOYSA-N [V].[Mo].[W].[Ta].[Nb] Chemical compound [V].[Mo].[W].[Ta].[Nb] TYURHCYSLHOQIV-UHFFFAOYSA-N 0.000 claims description 3
- KXOIKGAHZZAVKH-UHFFFAOYSA-N [Zr].[Hf].[Nb].[Ta].[Ti] Chemical compound [Zr].[Hf].[Nb].[Ta].[Ti] KXOIKGAHZZAVKH-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 150000002431 hydrogen Chemical class 0.000 claims description 3
- YUSUJSHEOICGOO-UHFFFAOYSA-N molybdenum rhenium Chemical compound [Mo].[Mo].[Re].[Re].[Re] YUSUJSHEOICGOO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052754 neon Inorganic materials 0.000 claims description 3
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 claims description 3
- DECCZIUVGMLHKQ-UHFFFAOYSA-N rhenium tungsten Chemical compound [W].[Re] DECCZIUVGMLHKQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 6
- 239000007791 liquid phase Substances 0.000 description 6
- 239000012071 phase Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
- F28D15/046—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure characterised by the material or the construction of the capillary structure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention belongs to the technical field of phase-change heat exchange equipment, and relates to an ultra-high temperature heat pipe, which comprises a pipe shell, wherein a heat pipe cavity is arranged in the pipe shell, a plurality of heat exchange air passages filled with heat carrying gas are arranged between the heat pipe cavity and the pipe shell, and one ends of the heat exchange air passages are communicated; the cylinder body is formed by porous materials and is arranged in the heat pipe cavity, a steam cavity is formed in the inner space of the cylinder body, a plurality of supporting blocks for supporting the cylinder body are arranged between the heat pipe cavity and the cylinder body, a plurality of annular cavity flow channels are arranged in the side wall of the cylinder body, and a clearance flow channel is formed between the heat pipe cavity and the cylinder body; the heat exchanger is arranged at the other end of the heat exchange air passage, is connected with the heat exchange air passage and is used for driving heat carrying gas to flow in the heat exchange air passage under the working condition of high power level and conveying heat to the heat exchanger. The invention has simple structure, combines the active and the passive, and can greatly improve the working efficiency of the heat pipe and the reliability of operation.
Description
Technical Field
The invention belongs to the technical field of phase change heat exchange equipment, and particularly relates to an ultra-high temperature heat pipe.
Background
The heat pipe is in a low-pressure environment, the evaporation and condensation of working medium in the heat pipe realize heat transmission, and the heat pipe has extremely high heat conductivity due to the phase change process. The heat pipe is widely applied to the fields of nuclear energy systems, aerospace, chemical metallurgy and the like due to the high heat conductivity. However, the heat pipe is used as a passive heat transfer device, and the heat transfer capacity is limited by capillary limit, entrainment limit, boiling limit, condensation limit, sonic speed limit and other heat transfer limits. Due to the limitation of heat transfer limit, the heat pipe is extremely prone to failure under transient high power conditions and long-term high power levels, resulting in accidents.
For this reason, how to improve the heat transfer capability of the heat pipe, especially the power level of the heat pipe at ultra-high temperatures, is an urgent problem, but this problem has not been solved for a long time due to the inherent limitation of the inactivity of the heat pipe.
Disclosure of Invention
In view of the above, the invention provides an ultra-high temperature heat pipe which is used for efficient and reliable heat transfer of the heat pipe under ultra-high temperature and high power level, has the advantages of simple structure, high reliability and combination of active and passive, and solves the technical problem that the heat pipe is extremely easy to fail under transient high power working conditions and long-term high power level, thereby causing accidents.
The technical scheme of the invention is as follows:
An ultra-high temperature heat pipe comprising:
The heat exchange device comprises a tube shell, wherein a heat pipe cavity is arranged in the tube shell, a plurality of heat exchange air passages filled with heat carrier gas are arranged between the heat pipe cavity and the tube shell, and one ends of the heat exchange air passages are communicated;
The cylinder body is formed by porous materials and is arranged in the heat pipe cavity, a steam cavity is formed in the inner space of the cylinder body, a plurality of supporting blocks for supporting the cylinder body are arranged between the heat pipe cavity and the cylinder body, a plurality of annular cavity flow channels are arranged in the side wall of the cylinder body, and a clearance flow channel is formed between the heat pipe cavity and the cylinder body;
the heat exchanger is arranged at the other end of the heat exchange air passage, is connected with the heat exchange air passage and is used for driving heat carrying gas to flow in the heat exchange air passage under the working condition of high power level and conveying heat to the heat exchanger.
Preferably, the material of the shell is a high-entropy alloy, refractory metal or carbon tube.
Preferably, the material of the envelope is zirconium-hafnium-niobium alloy, cobalt-chromium-copper-iron-nickel alloy, aluminum-cobalt-chromium-iron-nickel alloy, vanadium-niobium-molybdenum-tantalum-tungsten alloy, iron-chromium-nickel-manganese-zirconium alloy, titanium-zirconium-hafnium-niobium-tantalum alloy, aluminum-chromium-iron-molybdenum-niobium-series alloy, aluminum-chromium-molybdenum-niobium-zirconium alloy, molybdenum-rhenium alloy or tungsten-rhenium alloy.
Preferably, the heat-carrying gas is hydrogen, helium, argon, nitrogen, neon, helium-argon binary mixed gas, helium-xenon binary mixed gas or hydrogen-nitrogen binary mixed gas;
The helium-argon binary mixed gas is formed by mixing helium and argon, the volume ratio of the helium to the argon is 1.5-2:8.5-8, the helium-xenon binary mixed gas is formed by mixing helium and xenon, the volume ratio of the helium to the xenon is 3.5-4:6.5-6, the hydrogen-nitrogen binary mixed gas is formed by mixing hydrogen and nitrogen, and the volume ratio of the hydrogen to the nitrogen is 1-2:19-18.
Preferably, the volume ratio of helium to argon in the helium-argon binary mixed gas is 4:21, the volume ratio of helium to xenon in the helium-xenon binary mixed gas is 9:16, and the volume ratio of hydrogen to nitrogen in the hydrogen-nitrogen binary mixed gas is 3:37.
Preferably, the material of the support block is sintered powder, capillary tube or refractory metal.
Preferably, the cylinder is a first composite structure, a second composite structure or a third composite structure;
The first composite structure comprises a first metal wire mesh, wherein the first metal wire mesh is in a cylindrical shape and provided with a cylinder wall extending along a first direction, a plurality of dry passages are uniformly distributed in the cylinder wall, and the dry passages penetrate through two end surfaces of the first metal wire mesh and are parallel to the first direction in length direction;
The second composite structure comprises a second metal wire mesh which is cylindrical, a metal felt which is cylindrical is sleeved in the second metal wire mesh, and the second metal wire mesh is fixedly connected with the metal felt;
The third composite structure comprises a cylindrical shell, a central shaft and a plurality of channels, wherein the central shaft extends along the second direction, the inner wall of the shell is provided with the plurality of channels, the length direction of each channel is parallel to the central shaft, a cylindrical third wire mesh is sleeved in the shell, and the third wire mesh is fixedly connected with the shell.
Preferably, the third wire mesh can be replaced by a metal felt layer, a sintered powder layer, a foamed nickel layer.
Preferably, the total thickness of the cylinder is 1-1.2 mm, the diameter of the trunk is 0.01-0.1 mm, the depth of the channel is 0.08-0.1 mm, and the thicknesses of the metal felt layer, the sintered powder layer and the foam nickel layer are 9-10 micrometers.
Preferably, the annular flow channel is formed by using capillary tubes, wire mesh or sintered powder to form the side wall.
Compared with the prior art, the ultrahigh-temperature heat pipe provided by the invention has the advantages that the inherent advantages of the heat pipe are exerted at a low power level, the passive efficient heat transfer is realized, the stable and reliable heat transfer is realized through the heat pipe heat transfer and the heat carrier gas forced convection heat transfer at a high power level, and the requirements of safe and reliable heat transfer at different power levels can be met; the gap flow channel and the annular cavity flow channel are arranged in the heat pipe cavity, so that the backflow resistance of the liquid phase working medium of the heat pipe can be reduced, the heat transfer capacity of the heat pipe is improved, the heat pipe is simple in structure, the combination of the movable working medium and the non-movable working medium can be realized, the working efficiency of the heat pipe can be greatly improved, the reliability of operation can be improved, the practicability is high, and the heat pipe is worthy of popularization.
Drawings
FIG. 1 is a schematic view of the structure of the present invention, FIG. 1;
FIG. 2 is a schematic view of the structure of the present invention, FIG. 2;
FIG. 3 is a flow field schematic of the present invention, FIG. 3;
FIG. 4 is a schematic view of a partial structure of the present invention 1;
FIG. 5 is a partial schematic view of the present invention 2;
fig. 6 is a partial schematic view of the present invention, fig. 3.
Detailed Description
The present invention provides an ultra-high temperature heat pipe, and the following describes the present invention with reference to the schematic structural diagrams of fig. 1 to 6.
Example 1
As shown in fig. 1 and 2, the structure of the main body of the ultra-high temperature heat pipe provided by the invention comprises a pipe shell 1, a heat exchange air passage 2, a clearance flow passage 3, a supporting block 4, a cylinder 5, an annular cavity flow passage 6, a steam cavity 7 and a heat exchanger 8.
Wherein, the inside of the tube shell 1 comprises a plurality of heat exchange air passages 2 and a heat pipe cavity, the heat pipe cavity is arranged in the center of the tube shell 1, a plurality of heat exchange air passages 2 filled with heat carrier gas are arranged between the heat pipe cavity and the tube shell 1, the plurality of heat exchange air passages 2 encircle the periphery of the heat pipe cavity, and one ends of the heat exchange air passages 2 are communicated.
The heat pipe cavity is internally provided with a cylinder body 5, the cylinder body 5 is made of porous materials, the inner space of the cylinder body 5 forms a vapor cavity 7, a plurality of supporting blocks 4 for supporting the cylinder body 5 are arranged between the heat pipe cavity and the cylinder body 5, a plurality of annular cavity flow channels 6 are arranged in the side wall of the cylinder body 5, and the annular cavity flow channels 6 adopt capillaries, metal wire meshes or sintered powder to form the side wall. The gap flow channel 3 is formed between the heat pipe cavity and the cylinder body 5, and the structure can reduce the flow resistance of the heat pipe working medium and promote the circulation of the heat pipe working medium.
The other end of the heat exchange air flue 2 is provided with a heat exchanger 8, and the heat exchanger 8 is connected with the heat exchange air flue 2 and is used for driving heat-carrying gas to flow in the heat exchange air flue 2 under the working condition of high power level and conveying heat to the heat exchanger 8. The heat carrier gas can realize high-efficiency heat transmission and is suitable for ultra-high temperature environments.
Furthermore, the shell 1 is made of high-entropy alloy, refractory metal or carbon tube, and the material has extremely high melting point, so that the structural integrity of the ultra-high temperature heat pipe in a high-temperature environment is ensured.
Further, the material of the envelope 1 is zirconium-hafnium-niobium alloy, cobalt-chromium-copper-iron-nickel alloy, aluminum-cobalt-chromium-iron-nickel alloy, vanadium-niobium-molybdenum-tantalum-tungsten alloy, iron-chromium-nickel-manganese-zirconium alloy, titanium-zirconium-hafnium-niobium-tantalum alloy, aluminum-chromium-iron-molybdenum-niobium-series alloy, aluminum-chromium-molybdenum-niobium-zirconium alloy, molybdenum-rhenium alloy, tungsten-rhenium alloy.
Further, the heat carrier gas comprises hydrogen, helium, argon, nitrogen, neon, helium-argon binary mixed gas, helium-xenon binary mixed gas and hydrogen-nitrogen binary mixed gas. The gas has higher heat carrying capacity and can meet the requirement of heat transfer in an ultra-high temperature environment.
Specifically, helium-argon binary mixed gas is formed by mixing helium and argon, and the volume ratio of the helium to the argon is 1.5-2:8.5-8. The helium-xenon binary mixed gas is formed by mixing helium and xenon, and the volume ratio of the helium to the xenon is 3.5-4:6.5-6. The binary mixed gas of hydrogen and nitrogen is formed by mixing hydrogen and nitrogen, and the volume ratio of the hydrogen to the nitrogen is 1-2:19-18.
Preferably, the volume ratio of helium to argon in the helium-argon binary mixed gas is 4:21, the volume ratio of helium to xenon in the helium-xenon binary mixed gas is 9:16, and the volume ratio of hydrogen to nitrogen in the hydrogen-nitrogen binary mixed gas is 3:37.
Further, the material of the supporting block 4 is sintered powder, capillary tube or refractory metal, and the material can provide certain capillary force while meeting the high-temperature stability, so as to promote the circulation of working medium.
Further, the cylinder 5 is a first composite structure, a second composite structure or a third composite structure, so as to generate a larger capillary force to maintain the circulation of the working medium.
As shown in fig. 4, the first composite structure includes a first wire mesh 51, where the first wire mesh 51 is in a cylindrical shape, and has a cylinder wall extending along a first direction, and a plurality of dry passages 52 are uniformly distributed in the cylinder wall, and the dry passages 52 penetrate through two end surfaces of the first wire mesh 51, and the length direction of the dry passages is parallel to the first direction.
As shown in fig. 5, the second composite structure includes a second wire net 511, the second wire net 511 has a cylindrical shape, a metal felt 53 having a cylindrical shape is installed in the second wire net 511, and the second wire net 511 and the metal felt 53 are connected by diffusion welding or spot welding.
As shown in fig. 6, the third composite structure includes a cylindrical shell having a central axis extending along the second direction, a plurality of channels 54 are formed on the inner wall of the shell, the length direction of the channels 54 is parallel to the central axis, a third wire mesh 512 in the shape of a cylindrical is mounted in the shell, and the third wire mesh 512 and the shell are connected by diffusion welding or spot welding.
Alternatively, the third wire mesh 512 described above can be replaced by a metal felt layer, a sintered powder layer, a foamed nickel layer.
Preferably, the total thickness of the cylinder 5 is 1 to 1.2 mm, the diameter of the trunk 52 is 0.01 to 0.1 mm, the depth of the channel 54 is 0.08 to 0.1 mm, and the thicknesses of the metal felt layer, the sintered powder layer and the foamed nickel layer are 9 to 10 μm.
The working principle of the invention is as follows:
As shown in fig. 3, in the working condition of low power level, the heat exchanger 8 is in a closed state, heat is absorbed by the evaporating section of the heat pipe, the liquid-phase working medium of the heat pipe in the clearance flow channel 3, the cylinder 5 and the annular cavity flow channel 6 absorbs heat and evaporates into a gas-phase working medium, and the gas-phase working medium flows to the condensing section of the heat pipe to release heat under the drive of vapor pressure difference in the vapor cavity 7; the gas phase working medium is converted into the liquid phase working medium, the liquid phase working medium flows back to the evaporation section to continue the circulation under the drive of capillary force generated in the cylinder body 5, the existence of the clearance flow channel 3 and the annular cavity flow channel 6 reduces the resistance of the liquid phase working medium flowing back to realize high-efficiency heat transfer, and the heat-carrying gas in the heat exchange air channel 2 transfers heat through natural convection.
In the working condition of high power level, the flowing heat transfer of the heat pipe working medium in the heat pipe cavity is consistent with the low power level, but the heat exchanger 8 is in an open state, the heat exchanger 8 drives the heat carrying gas to flow in the heat exchange air passage 2 and transmits heat to the heat exchanger 8, so that the complete and effective heat transfer of the heat pipe is ensured.
Compared with the prior art, the invention has the following advantages:
The invention is provided with a heat exchange air passage, plays the inherent advantages of the heat pipe at low power level, realizes passive and efficient heat transfer, realizes stable and reliable heat transfer through heat pipe heat transfer and heat carrier gas forced convection heat transfer at high power level, and can meet the requirements of safe and reliable heat transfer at different power levels; the gap flow channel and the annular cavity flow channel are arranged in the heat pipe cavity, so that the backflow resistance of the liquid phase working medium of the heat pipe can be reduced, the heat transfer capacity of the heat pipe is improved, the structure is simple, the active and passive combination is realized, the working efficiency of the heat pipe can be greatly improved, and the running reliability is improved.
The foregoing disclosure is merely illustrative of preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any variations within the scope of the present invention will be within the scope of those skilled in the art.
Claims (9)
1. An ultra-high temperature heat pipe, comprising:
the heat exchange device comprises a tube shell (1), wherein a heat pipe cavity is arranged in the tube shell, a plurality of heat exchange air passages (2) filled with heat carrying gas are arranged between the heat pipe cavity and the tube shell (1), and one ends of the heat exchange air passages (2) are communicated;
the cylinder body (5) is made of porous materials and is arranged in the heat pipe cavity, a steam cavity (7) is formed in the inner space of the cylinder body (5), a plurality of supporting blocks (4) used for supporting the cylinder body (5) are arranged between the heat pipe cavity and the cylinder body (5), a plurality of annular cavity flow channels (6) are arranged in the side wall of the cylinder body (5), and a clearance flow channel (3) is formed between the heat pipe cavity and the cylinder body (5);
The heat exchanger (8) is arranged at the other end of the heat exchange air passage (2), and the heat exchanger (8) is connected with the heat exchange air passage (2) and is used for driving heat-carrying gas to flow in the heat exchange air passage (2) under the working condition of high power level and conveying heat to the heat exchanger (8);
The cylinder (5) is of a first composite structure, a second composite structure or a third composite structure;
The first composite structure comprises a first wire mesh (51), wherein the first wire mesh (51) is in a cylindrical shape and is provided with a cylinder wall extending along a first direction, a plurality of dry passages (52) are uniformly distributed in the cylinder wall, and the dry passages (52) penetrate through two end faces of the first wire mesh (51) and the length direction of the dry passages is parallel to the first direction;
the second composite structure comprises a second metal wire mesh (511), the second metal wire mesh (511) is cylindrical, a metal felt (53) which is cylindrical is sleeved in the second metal wire mesh (511), and the second metal wire mesh (511) is fixedly connected with the metal felt (53);
The third composite structure comprises a cylindrical shell, a central shaft and a plurality of channels (54), wherein the central shaft extends along the second direction, the inner wall of the shell is provided with the plurality of channels (54), the length direction of the channels (54) is parallel to the central shaft, a third wire mesh (512) which is cylindrical is sleeved in the shell, and the third wire mesh (512) is fixedly connected with the shell.
2. An ultra-high temperature heat pipe according to claim 1, wherein the material of the envelope (1) is a high entropy alloy, a refractory metal or a carbon tube.
3. An ultra-high temperature heat pipe according to claim 2, wherein the material of the envelope (1) is zirconium-hafnium-niobium alloy, cobalt-chromium-copper-iron-nickel alloy, aluminum-cobalt-chromium-iron-nickel alloy, vanadium-niobium-molybdenum-tantalum-tungsten alloy, iron-chromium-nickel-manganese-zirconium alloy, titanium-zirconium-hafnium-niobium-tantalum alloy, aluminum-chromium-iron-molybdenum-niobium-series alloy, aluminum-chromium-molybdenum-niobium-zirconium alloy, molybdenum-rhenium alloy or tungsten-rhenium alloy.
4. The ultra-high temperature heat pipe according to claim 1, wherein the heat carrier gas is hydrogen, helium, argon, nitrogen, neon, helium-argon binary mixture, helium-xenon binary mixture or hydrogen-nitrogen binary mixture;
The helium-argon binary mixed gas is formed by mixing helium and argon, the volume ratio of the helium to the argon is 1.5-2:8.5-8, the helium-xenon binary mixed gas is formed by mixing helium and xenon, the volume ratio of the helium to the xenon is 3.5-4:6.5-6, the hydrogen-nitrogen binary mixed gas is formed by mixing hydrogen and nitrogen, and the volume ratio of the hydrogen to the nitrogen is 1-2:19-18.
5. The ultra-high temperature heat pipe according to claim 4, wherein the volume ratio of helium to argon in the helium-argon binary mixture is 4:21, the volume ratio of helium to xenon in the helium-xenon binary mixture is 9:16, and the volume ratio of hydrogen to nitrogen in the hydrogen-nitrogen binary mixture is 3:37.
6. An ultra-high temperature heat pipe according to claim 1, wherein the material of the support block (4) is sintered powder, capillary tube or refractory metal.
7. An ultra-high temperature heat pipe according to claim 1, wherein the third wire mesh (512) is replaced by a metal felt layer, a sintered powder layer, a foamed nickel layer.
8. The ultra-high temperature heat pipe according to claim 7, wherein the total thickness of the cylinder (5) is 1 to 1.2 mm, the diameter of the trunk (52) is 0.01 to 0.1mm, the depth of the groove (54) is 0.08 to 0.1mm, and the thicknesses of the metal felt layer, the sintered powder layer and the foamed nickel layer are 9 to 10 μm.
9. An ultra-high temperature heat pipe according to claim 1, wherein the annular flow channel (6) is formed with a side wall using capillary tubes, wire mesh or sintered powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310739589.6A CN116793126B (en) | 2023-06-21 | 2023-06-21 | Super high temperature heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310739589.6A CN116793126B (en) | 2023-06-21 | 2023-06-21 | Super high temperature heat pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116793126A CN116793126A (en) | 2023-09-22 |
| CN116793126B true CN116793126B (en) | 2024-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310739589.6A Active CN116793126B (en) | 2023-06-21 | 2023-06-21 | Super high temperature heat pipe |
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| Country | Link |
|---|---|
| CN (1) | CN116793126B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1389013A (en) * | 1971-04-29 | 1975-04-03 | Atomic Energy Authority Uk | Tubular fluid heaters |
| DE202015101821U1 (en) * | 2015-04-14 | 2015-04-24 | Asia Vital Components Co., Ltd. | Fixing structure for a cooling element |
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