CN109387108A - A kind of changeable type evaporator compensator for cryogenic loop heat pipe - Google Patents
A kind of changeable type evaporator compensator for cryogenic loop heat pipe Download PDFInfo
- Publication number
- CN109387108A CN109387108A CN201811387865.2A CN201811387865A CN109387108A CN 109387108 A CN109387108 A CN 109387108A CN 201811387865 A CN201811387865 A CN 201811387865A CN 109387108 A CN109387108 A CN 109387108A
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- China
- Prior art keywords
- compensator
- evaporator
- heat pipe
- loop heat
- capillary wick
- 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.)
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- 239000007788 liquid Substances 0.000 claims abstract description 28
- 229910052709 silver Inorganic materials 0.000 claims abstract description 16
- 239000004332 silver Substances 0.000 claims abstract description 16
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 15
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 8
- 238000002474 experimental method Methods 0.000 abstract description 4
- 238000011160 research Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000002631 hypothermal effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000013526 supercooled liquid Substances 0.000 description 1
- 239000006200 vaporizer 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
- F28D15/043—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 forming loops, e.g. capillary pumped loops
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a kind of changeable type evaporator compensators for cryogenic loop heat pipe, are made of evaporator, compensator, filamentary silver, connection screw thread hole, liquid guiding tube or secondary capillary wick, compensator end cap, capillary wick, inlet tube, escape pipe.The replaceable formula evaporator compensator that unloads is sealed using flange screw thread filamentary silver, to realize evaporator, compensator, secondary capillary wick or the repeatability replacement of liquid guiding tube, and then the collocation for being best suitable for loop heat pipe demand is filtered out by quantitative experiment, realize the optimized design of loop heat pipe properties of product, there is important directive significance to the research control of each component simultaneously, influence of the size material of evaporator, compensator, liquid guiding tube or secondary capillary wick to loop heat pipe overall performance can be analyzed, is conducive to further design and improves cryogenic loop heat pipe.
Description
Technical field
The present invention relates to a kind of replaceable method of evaporator compensator for cryogenic loop heat pipe, refer specifically to evaporator,
Compensator and liquid guiding tube or secondary capillary wick are tightly connected by the cryogenic high pressure that flange filamentary silver screw thread carries out.
Background technique
Loop heat pipe has passive type work, does not need additionally to consume the energy as efficient two-phase transmission part, can be with
The features such as realizing reasonable layout and remote transmission, be widely used in space flight and aviation, infrared acquisition, etc. numerous areas.
Cryogenic loop heat pipe is mainly used for providing a kind of efficient long distance for relevant cryogenic applications place as low temperature subdiscipline
From transmission mode.Many scientific equipment instruments need Cryo Refrigerator to provide low temperature environment, to ensure its better property at present
Energy, efficiency and sensitivity, such as the cooling of infrared focus plane.But to scientific equipment instrument when on the one hand reducing refrigerator operation
On the other hand the mechanical oscillation and electromagnetic interference that device generates consider the reasonability of space layout, by the biggish refrigeration of volume again
Scientific instruments equipment is arranged in the core of equipment in equipment periphery by machine layout, is asked to need to solve high-effect long distance heat transfer
Topic.And cryogenic loop heat pipe can satisfy High cooling power, long range, the transmission of the small temperature difference and effectively barrier refrigerator vibration etc. and want
It asks, thus is applied on a large scale in all various aspects such as space flight and aviation and Medical Devices.
The principle of loop heat pipe: liquid working substance evaporates in evaporator, and gas-liquid interface is formed in capillary wick, generates capillary
Power pumps out liquid working substance from evaporator core, and steam then passes through gas conduit, into gas line, gas working medium
It is condensed into liquid when flowing through condenser, is further subcooled, along liquid line, flows back into compensator, passes through liquid guiding tube
Or secondary capillary wick enters evaporator core.
Cryogenic loop heat pipe is worked under profound hypothermia operating condition, so that it needs to be far smaller than room temperature using critical-temperature
Substance (such as nitrogen, ammonia) is used as working medium.Simultaneously because the difference of the two operation temperature area and application requirement, causes the two to set in structure
Have biggish difference in meter and heat-transfer character: 1, cryogenic loop heat pipe needs to consider the bearing capacity under room temperature, because total
In the case where constancy of volume, under room temperature, the profound hypothermia working medium of phase homogenous quantities will be up to tens megapascal.2, cryogenic loop heat pipe also face
Face how by loop heat pipe from room temperature drop to operating temperature under problem；3, the starting of cryogenic loop heat pipe is than room temperature circuit heat
Manage it is more difficult, heat-transfer capability also relatively it is weak very much, this is because the flow resistance of cryogenic fluid is bigger than room temperature working medium, and its table
Face warp tension ratio the latter is small.4, the difference in scale, cryogenic loop heat pipe due to usual thermic load several watts magnitude simultaneously again by
Space limitation, general to design toward miniaturization, this can not only increase the difficulty of production, can also weaken its heat-transfer capability, simultaneously
Keep its starting more difficult.
Evaporator is important motivity source and the core component of whole system circulation, is to determine that whole system is run
The critical component of reliability and stability.Compensator is closely coupled with evaporator, influences each other.The effect of compensator is to ensure that steaming
Capillary wick in hair device can be infiltrated by liquid always, prevent evaporator from leading to loop heat pipe starting failure or work because dryouting
Failure；Compensator also has both the function of temperature control simultaneously, and in other words, the temperature and pressure state of compensator determines entire circuit heat
The working condition of pipe influences the heat transfer property of loop heat pipe.Liquid guiding tube or secondary capillary wick are inside evaporator and compensator
Supercooled liquid in liquid line, can be transported in time the core of evaporator, it is ensured that liquid-sucking core is sufficiently infiltrated, together by effectively connection
When the bubble that is gathered capillary wick core by the subcooled liquid of liquid guiding tube or the reflux of secondary capillary wick and incoagulable gas convey
It is stored to compensator, guarantees the stable operation of cryogenic loop heat pipe.
Thus evaporator, compensator, liquid guiding tube or the matching of secondary capillary wick three are for the starting of loop heat pipe and steady
Qualitative energy optimization is most important.
The problem of due to processing technology, capillary wick inner flow passage have biggish randomness.It can not be more according to conventional
The evaporator compensator changed, when carrying out heat and mass transfer analysis to loop heat pipe, the influence of capillary wick and the influence meeting of other component
It interferes with each other, to influence final judgement, is unfavorable for the research of loop heat pipe mechanism；Non-exchange evaporator compensator,
When a large amount of control experiment being needed to carry out data acquisition with the final loop heat pipe design scheme of determination, research can be greatly improved
Cost.Therefore a kind of changeable type evaporator compensator that can be used for cryogenic loop heat pipe is needed, is mended in confirmation last evaporator
After repaying device scheme, directly each removable section can be welded, to ensure the high reliability of final finished.
Summary of the invention
The purpose of the present invention is to propose to a kind of replaceable evaporator compensator structures unloaded for cryogenic loop heat pipe.It should
Structure is fixed by flange nut, filamentary silver seals, and is filled so that the evaporator compensator structure is able to satisfy cryogenic loop heat pipe room temperature
The pressure requirements of storage are filled, while still keeping good leakproofness at low temperature, to realize evaporator in low-temperature circuit, compensation
Experimental study is recycled and quantitatively matched to device, liquid guiding tube or secondary capillary wick.
In order to achieve the above objectives, mentality of designing of the invention are as follows:
Use filamentary silver as washer, realizes that the room temperature of junction holds the requirement for still ensureing air-tightness under high pressure, low temperature.
The end face of ring flange is flat and smooth, and threaded hole ensures joint place uniform force in symmetrical distribution to greatest extent.
It is tested by a large amount of replaceable evaporator compensators, filters out last evaporator design of Compensator scheme.
According to the scheme finally screened, directly each detachable part is welded, to ensure the reliability of final finished.
Concrete structure design is as follows:
The present invention unloads formula evaporator compensator, including evaporator 1, benefit for the replaceable of cryogenic loop heat pipe using a kind of
It repays device 2, filamentary silver 3, connection screw thread hole 4, liquid guiding tube or secondary capillary wick 5, compensator end cap 6, capillary wick 7, inlet tube 2-1, go out
Tracheae 1-1.
It is described it is replaceable unload in formula evaporator compensator, 1 one end of evaporator is escape pipe 1-1, and the other end is ring flange
End face.2 both ends of compensator are directly respectively two flange side surfaces.Compensator end cap 6 and escape pipe are directly an entirety, in
The heart has a groove, for the connection with liquid guiding tube or secondary capillary wick.Evaporator 1 and compensator 2 and compensator 2 and compensation
Device end cap 6 is all connected by end face of flange using connection screw thread hole 4, is sealed using filamentary silver 3.Liquid guiding tube 5 is welded on compensation
On device end cap in 6 groove.
The invention has the advantages that
First, disassembling the evaporator in cryogenic loop heat pipe with compensator at two pieces, will increase using ring flange connection
Thermal resistance between evaporator and compensator, so that the leakage for reducing evaporator to compensator is hot；Second, due to evaporator and compensation
Device, secondary capillary wick or liquid guiding tube can be in any combination, it is easier to filter out matching and more preferably be more advantageous to loop heat pipe performance
The combination of evaporator compensator, while the uncontrollable factor of experiment is reduced, reduce experimental cost.Third, the structure will not influence benefit
Device is repaid to the compensating action of evaporator, it is nonetheless possible to use secondary capillary wick or liquid guiding tube etc. preferably remain integration originally
The advantage of evaporator compensator.Inexpensive, best,
Detailed description of the invention
Fig. 1 is evaporator compensator entirety installation diagram；
In Fig. 2, (a) is entirety sectional view, figure label: 1: evaporator；2: compensator；5: liquid guiding tube or secondary capillary
Core；6: compensator cover board；7: capillary wick；2-1: inlet tube；1-1: escape pipe.It (b) is partial enlarged view, figure label: 3: silver
Silk；4: connection screw thread hole.
Fig. 3 is evaporator schematic diagram；
Fig. 4 is compensator schematic diagram；
Fig. 5 is filamentary silver schematic diagram；
Fig. 6 is capillary wick schematic diagram；
Fig. 7 is liquid guiding tube or secondary capillary wick schematic diagram；
Fig. 8 is compensator end cap schematic diagram.
Specific embodiment
In conjunction with attached drawing, structural principle of the invention is described in further detail below.
It is of the present invention it is replaceable unload formula evaporator compensator, referring to attached drawing 1-7 and installation diagram and cross-sectional view, the present invention
Mainly being different from the structure of Conventional vaporizer compensator includes:
Flange side surface, filamentary silver, threaded hole.
The replaceable of mentality of designing design according to the present invention, which is illustrated, referring to attached drawing citing unloads formula evaporator compensator, entirety
The material of selection is 316L stainless steel, and evaporator 1 is using whole turning, outer diameter 22mm, internal diameter 20mm, overall length 2-12-1mm, one
End turning is escape pipe 1-1, outer diameter 6mm, internal diameter 3mm, and overall length 40mm, other end turning is that flange side surface (deposit by end face center
In groove), lower section is the heating wing plate of a 2-10*40mm.The whole turning of the use of compensator 2, outer diameter 22mm, internal diameter 20mm,
Overall length 2-10mm, the direct turning in both ends go out two flange side surfaces (one end is boss, one end groove).Compensator end cap 6 with go out
Tracheae one entirety of direct turning, central boss have a groove, and internal diameter 2-1mm is used for and liquid guiding tube or secondary capillary wick
Soldering.Evaporator 1 and compensator 2 and compensator 2 and compensator end cap 6 (there are boss for end face center) all pass through end face of flange
It is connected using six symmetrical threaded holes 4 of connection, is carried out using filamentary silver 3 (ring internal diameter 23.2-1mm, filamentary silver internal diameter 0.5mm)
Sealing.Flange external diameter 44mm, 3mm the threaded hole center of circle is at from flange center line 33mm.Ring flange thickness 5mm containing boss, it is convex
Platform outer diameter 24mm, internal diameter 20mm, high 2mm；Ring flange containing groove, groove internal diameter 26mm, deep 0.2mm are secondary for arranging filamentary silver
Grade groove internal diameter 24mm, deep 2mm.Evaporator compensator and cover board are attached by end face of flange upper screwed hole, by recessed
The cooperation of slot, boss and filamentary silver is sealed,
The beneficial effects of the present invention are: first, the evaporator in cryogenic loop heat pipe is disassembled with compensator into two pieces,
It will increase the thermal resistance between evaporator and compensator, so that the leakage for reducing evaporator to compensator is hot；Second, using such knot
Structure will not influence compensator to the compensating action of evaporator, it is nonetheless possible to use secondary capillary wick or liquid guiding tube etc. are preferably protected
The advantage of integrated evaporator compensator originally is stayed；Third, since evaporator and compensator can be in any combination, it is easier to sieve
The evaporator compensator combination that matching is more preferably more advantageous to loop heat pipe performance is selected, realizes the optimal of cryogenic loop heat pipe product
Change design, while decreasing the uncontrollable factor of experiment, reduces research cost.
The advantages of basic principles and main features and invention of invention have been shown and described above.The technical staff of the industry
It should be appreciated that the present invention is not limited to the above embodiments, the above embodiments and description only describe the present invention
Principle, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these variation and
Improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent
Object defines.
Claims (1)
1. a kind of changeable type evaporator compensator for cryogenic loop heat pipe, including evaporator (1), compensator (2), filamentary silver
(3), connection screw thread hole (4), liquid guiding tube (5), compensator end cap (6), capillary wick (7), inlet tube (2-1), escape pipe (1-1),
It is characterized by:
In the changeable type evaporator compensator, evaporator (1) one end has escape pipe (1-1), and the other end has a flange
Side surface, end face center are fluted；Respectively there is a flange side surface at compensator (2) both ends, and end flange disk center is groove, separately
There is a boss in end flange disk center；There are escape pipe, evaporator (1) and compensator (2) and compensator on compensator end cap (6)
(2) it is all connect by the connection screw thread hole (4) that is used in conjunction with each other of the end face of flange of different structure with compensator end cap (6),
Insertion filamentary silver (3) is sealed in clearance groove after both ends of the surface fitting, and liquid guiding tube (5) is welded on compensator end cap the recessed of (6)
In slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811387865.2A CN109387108B (en) | 2018-11-21 | 2018-11-21 | Replaceable evaporator compensator for low-temperature loop heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811387865.2A CN109387108B (en) | 2018-11-21 | 2018-11-21 | Replaceable evaporator compensator for low-temperature loop heat pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109387108A true CN109387108A (en) | 2019-02-26 |
| CN109387108B CN109387108B (en) | 2024-03-26 |
Family
ID=65428864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811387865.2A Active CN109387108B (en) | 2018-11-21 | 2018-11-21 | Replaceable evaporator compensator for low-temperature loop heat pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109387108B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6227288B1 (en) * | 2000-05-01 | 2001-05-08 | The United States Of America As Represented By The Secretary Of The Air Force | Multifunctional capillary system for loop heat pipe statement of government interest |
| CN1467460A (en) * | 2002-07-09 | 2004-01-14 | 中国科学院理化技术研究所 | Refrigeration quantity transporting equipment for heat pipe type impulse pipe refrigerating machine |
| CN1648592A (en) * | 2005-03-08 | 2005-08-03 | 中国科学院理化技术研究所 | Deep cold loop heat tube |
| CN2788115Y (en) * | 2005-03-10 | 2006-06-14 | 中国科学院理化技术研究所 | Deep cryogenic loop heat pipe for cryogenic integrated system |
| CN103344143A (en) * | 2013-06-08 | 2013-10-09 | 北京航空航天大学 | Evaporator and liquid reservoir used for loop heat pipe and application thereof |
| WO2014102402A1 (en) * | 2012-12-28 | 2014-07-03 | Ibérica Del Espacio, S.A. | Loop heat pipe apparatus for heat transfer and thermal control |
| CN209445864U (en) * | 2018-11-21 | 2019-09-27 | 中国科学院上海技术物理研究所 | Changeable type evaporator compensator for cryogenic loop heat pipe |
-
2018
- 2018-11-21 CN CN201811387865.2A patent/CN109387108B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6227288B1 (en) * | 2000-05-01 | 2001-05-08 | The United States Of America As Represented By The Secretary Of The Air Force | Multifunctional capillary system for loop heat pipe statement of government interest |
| CN1467460A (en) * | 2002-07-09 | 2004-01-14 | 中国科学院理化技术研究所 | Refrigeration quantity transporting equipment for heat pipe type impulse pipe refrigerating machine |
| CN1648592A (en) * | 2005-03-08 | 2005-08-03 | 中国科学院理化技术研究所 | Deep cold loop heat tube |
| CN2788115Y (en) * | 2005-03-10 | 2006-06-14 | 中国科学院理化技术研究所 | Deep cryogenic loop heat pipe for cryogenic integrated system |
| WO2014102402A1 (en) * | 2012-12-28 | 2014-07-03 | Ibérica Del Espacio, S.A. | Loop heat pipe apparatus for heat transfer and thermal control |
| CN103344143A (en) * | 2013-06-08 | 2013-10-09 | 北京航空航天大学 | Evaporator and liquid reservoir used for loop heat pipe and application thereof |
| CN209445864U (en) * | 2018-11-21 | 2019-09-27 | 中国科学院上海技术物理研究所 | Changeable type evaporator compensator for cryogenic loop heat pipe |
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| Publication number | Publication date |
|---|---|
| CN109387108B (en) | 2024-03-26 |
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