CN2788114Y - Gravity-assisted low-temperature loop heat pipe for deep low-temperature region - Google Patents
Gravity-assisted low-temperature loop heat pipe for deep low-temperature region Download PDFInfo
- Publication number
- CN2788114Y CN2788114Y CN 200520000941 CN200520000941U CN2788114Y CN 2788114 Y CN2788114 Y CN 2788114Y CN 200520000941 CN200520000941 CN 200520000941 CN 200520000941 U CN200520000941 U CN 200520000941U CN 2788114 Y CN2788114 Y CN 2788114Y
- Authority
- CN
- China
- Prior art keywords
- line
- pipe
- heat pipe
- loop heat
- condenser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000005484 gravity Effects 0.000 title claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 19
- 239000010935 stainless steel Substances 0.000 claims abstract description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 239000010949 copper Substances 0.000 claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 6
- 230000002631 hypothermal effect Effects 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 238000005245 sintering Methods 0.000 claims description 5
- 238000005476 soldering Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 20
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 10
- 239000012530 fluid Substances 0.000 abstract description 5
- 239000007789 gas Substances 0.000 abstract 1
- 230000010354 integration Effects 0.000 abstract 1
- 238000005057 refrigeration Methods 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 238000010622 cold drawing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000010358 mechanical oscillation Effects 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000002207 thermal evaporation Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
Images
Abstract
The utility model relates to a gravity-assisted low temperature loop heat pipe for dark low temperature zone, include: the condenser is connected with the evaporator in series and forms a loop; the condenser consists of a red copper plate and two sections of red copper tubes soldered on the red copper plate; the evaporator is a stainless steel pipe with an axial channel cut on the surface of an inner hole, and a cup-shaped porous structure pipe sintered by stainless steel powder is coaxially arranged in the inner hole; and the gas reservoir is arranged on the condensing pipeline of the condenser and is close to the pipeline on one side of the steam pipeline. The vapor line is located at a higher position than the liquid line. Because the working fluid is the deep low temperature working medium such as nitrogen, the working fluid can work in a liquid nitrogen temperature region or a lower deep low temperature region; meanwhile, the phase change heat transfer is utilized and the device works under the gravity-assisted condition, so the device has good isothermal property, can realize long-distance and small-temperature-difference heat transfer, can improve the integration relation between a low-temperature refrigerator and a cooled device, and isolates mechanical vibration and electromagnetic interference from the refrigerator.
Description
Technical field
The utility model belongs to refrigeration and cryogenic technique field, particularly liquid nitrogen temperature and even more auxiliary a kind of simple in structure, the gravity assisted cryogenic loop heat pipe at a distance efficiently down of the gravity of low-temperature space.
Background technology
21 century is the century of cryogenic refrigeration machine technology and superconductor technology great development, and the application of Refrigeration Technique will more extensively be goed deep into.At present, the low-temperature receiver of high-temperature superconductive device mainly is the micro low-temperature refrigeration machine.Current, the common method that connects the refrigeration machine and the device that is cooled is to carry out the heat conduction with copper rod, and its shortcoming is when hot transmission range is elongated, and the two ends temperature difference can be subjected to the restriction of heat conduction cross-sectional area.In order under the same temperature difference, to transmit more heat, just need to seek other heat-transferring method.As everyone knows, a kind of so just effective heat-transfer equipment of heat pipe is the principle of phase-change heat transfer because its utilizes, so can transmit more heat under the less temperature difference.Though the structure of conventional heat pipe is comparatively simple, it also is not suitable for remote heat transmission, can not avoid Cryo Refrigerator to the mechanical oscillation of device generation and the influence of electromagnetic interference of being cooled.
The difference of loop heat pipe and conventional heat pipe is: the stainless steel tube of the inner wall smooth that use is flexible or metal hose are as transfer line, thereby reduced working medium pressure drop of flow in transfer line, thereby make this equipment can grow distance, a large amount of heats of little temperature difference ground transmission, make the layout of the Cryo Refrigerator and the device that is cooled become quite flexible simultaneously.In addition, because the superconducting transition temperature still lower (generally being in liquid nitrogen temperature or lower) of current superconductive device that can practicability, and be that the normal temperature loop heat pipe of working medium can not be applied to the extremely low occasion of this temperature with ammonia (freezing point 195K), therefore need the development cryogenic loop heat pipe satisfy this demand.
Summary of the invention
The purpose of this utility model is: in order to improve Cryo Refrigerator and the integrated relationship between device of being cooled, and provide a kind of gravity assisted cryogenic loop heat pipe that is operated in profound hypothermia district (liquid nitrogen temperature and following warm area thereof).It is a kind of efficient heat transfer equipment, and can solve refrigeration machine effectively and the isolation technics between device of being cooled, thereby effectively suppresses mechanical oscillation and electromagnetic interference from refrigeration machine.While so have good isothermal, so just can solve the problem that makes the reduction of refrigeration machine efficient greatly owing to the temperature difference between Cooling and Heat Source owing to the cryogenic loop heat pipe utilization also is the principle of phase-change heat transfer.The gravity assisted cryogenic loop heat pipe that is used for the profound hypothermia district that the utility model provides is simple in structure, can be applied to the occasion of the remote heat transmission in profound hypothermia district.
The technical solution of the utility model is as follows:
The gravity assisted cryogenic loop heat pipe that is used for the profound hypothermia district that the utility model provides comprises:
One evaporimeter 1 and connect with evaporimeter 1 by liquid line 2, and pass through a condenser 11 in steam pipe line 6 formation loops; Described condenser 11 is made up of a copper plate 4 and the soldering two sections copper tubes 3,31 on it; Described evaporimeter 1 is characterized in that for being cut with the stainless steel tube of axial slot on the bore area, also comprises: be installed on the condensate line of condenser 11 near the air reservoir 5 on the side pipe line of steam pipe line.
Described connection liquid line 2 and steam pipe line 8 are the flexible metal flexible pipe.Described connection liquid line 2 and steam pipe line 8 are flexible stainless-steel thin-wall pipe.Described evaporimeter 1 and liquid line 2 horizontal positioned.The position of described steam pipe line 6 is higher than the position of liquid line 2.The cup-shaped loose structure pipe 10 that coaxial placement is formed by the powder of stainless steel sintering in the endoporus of described evaporimeter 1.
The gravity assisted cryogenic loop heat pipe that is used for the profound hypothermia district of the present utility model utilizes the evaporation of working medium and the phase transition process that condenses transmits heat, thereby is a kind of heat-transfer equipment efficiently, can work under liquid nitrogen temperature and even lower profound hypothermia district.Its loop comprises an evaporimeter (device directly contacts with being cooled) that absorbs the low temperature thermic load, also has one heat discharged condenser (directly contacting with the refrigeration machine cold junction) to the refrigeration machine cold junction.Evaporimeter and condenser are that the length thin tube (as stainless steel tube or metal hose) by flexibility links to each other, for the Cryo Refrigerator cold junction and heat and the vibration that provides good between device that be cooled isolate, and make that the layout of cold and heat source is more flexible.In addition,, adopt profound hypothermia working medium such as nitrogen, need therefore to consider that whole system under the normal temperature has the safety problem of enough bearing capacities as working fluid because gravity assisted cryogenic loop heat pipe is operated in the profound hypothermia district.Therefore, in order to ensure the safety under the normal temperature, just the air reservoir of a big volume of needs use reduces the pressure under the normal temperature.Though normal temperature working medium such as cryogenic fluid such as nitrogen and ammonia are compared, its surface tension is little, flow resistance is big, and is down auxiliary at gravity, and the gravity assisted cryogenic loop heat pipe that is used for the profound hypothermia district that the utility model provides still has remotely transferring performance preferably.
The gravity assisted cryogenic loop heat pipe that is used for the profound hypothermia district of the present utility model, condenser 11 is to be formed on a copper sheet by two sections copper tube solderings.Evaporimeter 1 is the stainless steel tube that is cut with axial slot on the bore area, because the gravity assisted cryogenic loop heat pipe that provides of the utility model lays particular emphasis on the application in the gravitational field, thereby the cup-shaped loose structure pipe that can coaxial placement in the endoporus of evaporimeter 1 forms by the powder of stainless steel sintering (also not placing porous structural tube).When evaporator temperature drops to operating temperature, but with regard to heating fumigators, so the liquid refrigerant in the loose structure will be subjected to thermal evaporation, and form the gas-liquid interface, the pressure differential of these gas-liquid interface both sides is capillary pressure.Under the driving of this pressure reduction and gravity, the steam that produces in the evaporimeter 1 will flow to condenser 11 by steam pipe line, promote condensed condensate liquid simultaneously and flow back to the evaporimeter 1 from liquid line.So constantly circulation can be passed to condenser 11 to heat from evaporimeter 1.When in the evaporimeter 1 not during the placing porous structure, drive working medium and just have only gravity along the power of Modelling of Flow with Recirculation.What connect evaporimeter 1 and condenser 11 is liquid line and vapor line, use all be the flexible stainless-steel thin-wall pipe of external diameter less (as 3mm).In addition, air reservoir 5 links to each other by an elongated tubular with whole loop.
The gravity assisted cryogenic loop heat pipe that is used for the profound hypothermia district of the present utility model mainly is devoted to the remote cold transmission of gravitational field Cryo Refrigerator, and can improve Cryo Refrigerator effectively and the integrated relationship between device of being cooled, avoid mechanical oscillation and electromagnetic interference from Cryo Refrigerator.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present utility model;
Fig. 2 is the structural representation of evaporimeter 1;
Fig. 3 is the A-A generalized section of Fig. 2.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described further:
Fig. 1 is an overall structure schematic diagram of the present utility model; Fig. 2 is the structural representation of evaporimeter 1; As seen from the figure, the gravity assisted cryogenic loop heat pipe that is used for the profound hypothermia district of the present utility model, an evaporimeter 1 and connect with evaporimeter 1 by liquid line 2, and pass through a condenser 11 in steam pipe line 6 formation loops; Described condenser 11 is made up of a copper plate 4 and the soldering two sections copper tubes 3,31 on it; As shown in Figure 2, described evaporimeter 1 is for being cut with the stainless steel tube of axial slot, the cup-shaped loose structure pipe 10 that coaxial placement is formed by the powder of stainless steel sintering in its endoporus on the bore area; And, be installed on the condensate line of condenser 11 near the air reservoir 5 on the side pipe line of steam pipe line.
Described connection liquid line 2 and steam pipe line 8 are the flexible metal flexible pipe.Described connection liquid line 2 and steam pipe line 8 are flexible stainless-steel thin-wall pipe.Described evaporimeter 1 and liquid line 2 horizontal positioned.The position of described steam pipe line 6 is higher than the position of liquid line 2.
The gravity assisted cryogenic loop heat pipe that is used for the profound hypothermia district of the present utility model, its evaporimeter 1 is the stainless steel tube that inner surface has cut axial slot, coaxial placement is the cup-shaped loose structure pipe that is formed by the powder of stainless steel sintering in its endoporus.What connect evaporimeter 1 and condenser pipeline 3 is liquid line 2 and vapor line 6, use all be the flexible stainless-steel thin-wall pipe of external diameter less (as 3mm).Air reservoir 5 links to each other with whole loop by an elongated tubular 7.
If adopt high purity nitrogen as hydraulic fluid, the gravity assisted cryogenic loop heat pipe that is used for the profound hypothermia district that then the utility model provides can be operated in liquid nitrogen temperature, only needs to use Cryo Refrigerator that condenser cold drawing 4 is cooled to and maintains 78K in the case and gets final product.As shown in Figure 1, gravity assisted cryogenic loop heat pipe horizontal positioned and integral body are in (as room temperature 273K) under the environment temperature during beginning.The relative position of adjusting liquid line 2 and steam pipe line 6 can make steam pipe line 6 be higher than liquid line 2, but evaporimeter 1 and liquid line 2 still are horizontal.Like this, the gravity assisted cryogenic loop heat pipe that provides of the utility model can be operated under the gravity subsidiary conditions.After using Cryo Refrigerator that condenser cold drawing 4 is cooled to 78K, owing to condenser pipeline 3 directly contacts with cold drawing 4, so the working medium in the condenser pipeline 3 is liquefied by the effect of heat conduction.Simultaneously, condensate liquid will flow to evaporimeter 1 under the effect of gravity, and make evaporimeter 1 cooling.
Reduce to below the critical-temperature of working medium when evaporimeter 1 temperature after, gravity assisted cryogenic loop heat pipe just can enter normal operating conditions.At this moment, evaporimeter 1 is with the be cooled caloric value of device of absorption, and the liquid refrigerant in it will be subjected to thermal evaporation and produce certain capillary force.Under the acting in conjunction of capillary force and gravity, the steam that produces in the evaporimeter 1 will flow to condenser pipeline 3 by steam pipe line 6.Simultaneously, the partial condensation liquid in the condenser pipeline 3 also can flow back under capillary force and weight-driven in the evaporimeter 1, and circulation so constantly relies on latent heat that heat is passed to condenser cold drawing 4 from evaporimeter 1.
Claims (6)
1, a kind of gravity assisted cryogenic loop heat pipe that is used for the profound hypothermia district comprises:
One evaporimeter (1) and connect with evaporimeter (1) and pass through the condenser (11) in steam pipe line (6) formation loop by liquid line (2); Described condenser (11) is made up of a copper plate (4) and the soldering two sections copper tubes (3,31) on it; Described evaporimeter (1) is characterized in that for being cut with the stainless steel tube of axial slot on the bore area, also comprises: be installed on the condensate line of condenser (11) near the air reservoir (5) on the side pipe line of steam pipe line.
2, the gravity assisted cryogenic loop heat pipe that is used for the profound hypothermia district according to claim 1, it is characterized in that: described connection liquid line (2) and steam pipe line (8) are the flexible metal flexible pipe.
3, the gravity assisted cryogenic loop heat pipe that is used for the profound hypothermia district according to claim 2, it is characterized in that: described connection liquid line (2) and steam pipe line (8) are flexible stainless-steel thin-wall pipe.
4, the gravity assisted cryogenic loop heat pipe that is used for the profound hypothermia district according to claim 1 is characterized in that: described evaporimeter (1) and liquid line (2) horizontal positioned.
5, the gravity assisted cryogenic loop heat pipe that is used for the profound hypothermia district according to claim 1, it is characterized in that: the position of described steam pipe line (6) is higher than the position of liquid line (2).
6, the gravity assisted cryogenic loop heat pipe that is used for the profound hypothermia district according to claim 1 is characterized in that: the cup-shaped loose structure pipe (10) that coaxial placement is formed by the powder of stainless steel sintering in the endoporus of described evaporimeter (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520000941 CN2788114Y (en) | 2005-01-18 | 2005-01-18 | Gravity-assisted low-temperature loop heat pipe for deep low-temperature region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520000941 CN2788114Y (en) | 2005-01-18 | 2005-01-18 | Gravity-assisted low-temperature loop heat pipe for deep low-temperature region |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2788114Y true CN2788114Y (en) | 2006-06-14 |
Family
ID=36786409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520000941 Expired - Lifetime CN2788114Y (en) | 2005-01-18 | 2005-01-18 | Gravity-assisted low-temperature loop heat pipe for deep low-temperature region |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2788114Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100344930C (en) * | 2005-01-13 | 2007-10-24 | 中国科学院理化技术研究所 | Gravity-assisted low-temperature loop heat pipe in deep low-temperature region |
| CN100552366C (en) * | 2006-09-15 | 2009-10-21 | 富准精密工业(深圳)有限公司 | Loop heat pipe |
-
2005
- 2005-01-18 CN CN 200520000941 patent/CN2788114Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100344930C (en) * | 2005-01-13 | 2007-10-24 | 中国科学院理化技术研究所 | Gravity-assisted low-temperature loop heat pipe in deep low-temperature region |
| CN100552366C (en) * | 2006-09-15 | 2009-10-21 | 富准精密工业(深圳)有限公司 | Loop heat pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107388861B (en) | Hot wall type heat exchanger | |
| CN1328566C (en) | Cryogenic loop heat pipe | |
| CN108962484B (en) | phase-change heat-exchange supercooling box for superconducting cable, cooling system and cooling method | |
| WO2006063532A1 (en) | A heat tube device utilizing cold energy and application thereof | |
| CN100344930C (en) | Gravity-assisted low-temperature loop heat pipe in deep low-temperature region | |
| CN108253830B (en) | Loop heat pipe with auxiliary infusion pipeline | |
| CN102109257A (en) | Low-temperature loop heat pipe device | |
| CN110057123A (en) | Pulsating heat pipe drives the steam compression type circulatory system of heat of compressor defrosting | |
| CN2767942Y (en) | Low-temperature loop heat pipe for deep low-temperature zone | |
| CN2788115Y (en) | Cryogenic loop heat pipe for low-temperature integrated system | |
| CN2788114Y (en) | Gravity-assisted low-temperature loop heat pipe for deep low-temperature region | |
| CN1328565C (en) | Low-temperature loop heat pipe in deep low-temperature region | |
| CN2762046Y (en) | Thermopipe self circulation heat collector | |
| CN111102866A (en) | Heat pipe capable of synchronously controlling auxiliary phase change | |
| CN200986345Y (en) | Hot-water type lithium bromide absorbing refrigerator between single effect and two stage | |
| CN106091463A (en) | 4K thermal coupling regenerating type low-temperature refrigerator based on controlled heat pipe and refrigerating method thereof | |
| CN1223812C (en) | Cold quantity conveying device of heat pipe type pulse tube refrigerator | |
| CN100445670C (en) | Absorption mode refrigerator of hot water type lithium bromide between single action and two stages | |
| CN101639310A (en) | Hot-gas bypass and surface cooler supercooling defrosting device | |
| CN207585135U (en) | A kind of heated type refrigeration equipment | |
| CN203083204U (en) | Installing structure of novel heat exchange tube of heat exchanger | |
| CN101251315A (en) | Magnetic working medium bed of magnetic refrigerating machine active regenerator as well as heat-transferring method thereof | |
| CN201637218U (en) | Object-oriented cooling device based on pulse tube refrigerator | |
| CN220689401U (en) | Waste heat recovery refrigerating system | |
| CN217764599U (en) | Tesla valve condenser low-temperature loop heat pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150118 Granted publication date: 20060614 |