CN201384954Y - Liquid nitrogen and alcohol double-medium compatible heat-sink system of space environment simulation test equipment - Google Patents
Liquid nitrogen and alcohol double-medium compatible heat-sink system of space environment simulation test equipment Download PDFInfo
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- CN201384954Y CN201384954Y CN200820183297U CN200820183297U CN201384954Y CN 201384954 Y CN201384954 Y CN 201384954Y CN 200820183297 U CN200820183297 U CN 200820183297U CN 200820183297 U CN200820183297 U CN 200820183297U CN 201384954 Y CN201384954 Y CN 201384954Y
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- alcohol
- heat sink
- house steward
- liquid nitrogen
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Abstract
The utility model relates to a component used for a low-temperature process flow system of space environment simulation test equipment, in particular to a liquid nitrogen and alcohol double-medium compatible heat-sink system of space environment simulation test equipment. The heat-sink system can allow the liquid nitrogen and the alcohol to simultaneously share one flow passage, and the liquid nitrogen and the alcohol can be switched safely. Through the switching of the two media, the heat-sink temperature can be regulated between -163 DEG C and +50 DEG C. The heat-sink system consists of a heat-sink body, a heat-sink surface resistance temperature sensor, an alcohol heater, a soft corrugated pipe outer circumference temperature measuring resistance sensor, an alcohol discharge valve, an auxiliary alcohol discharge box, a nitrogen gas blowing valve and a nitrogen gas source, wherein the heat-sink body is in a fishbone type structure, and is formed by an upper main pipe, a lower main pipe, a finned branch pipe, a soft corrugated pipe and an auxiliary liquid discharge pipe through welding, wherein the finned branch pipe is formed by a metal pipe and metal fins through welding; and an evaporation alcohol heater is arranged in the position of the soft corrugated pipe. The system is compatible for two heat exchange media: the liquid nitrogen and the alcohol, and overcomes the defect that the fishbone type structure heat sink can only adopt one heat exchange medium.
Description
Technical field
The utility model relates to a kind of parts that are used for space-environment facility low temperature flow system.
Background technology
Space-environment facility is the equipment of virtual space vacuum and low temperature environment, heat sink is the critical piece of this kind equipment, pass through radiant heat exchange, for the equipment test space provides required temperature environment, in order to reach this purpose, must control heat sink temperature, the control heat sink temperature is to force mobilely in heat sink runner by heat transfer medium, realizes with heat sink heat exchange.
According to the temperature range difference of heat sink requirement, the present following heat transferring medium of various heat sink employing, liquid nitrogen, alcohol or conduction oil, the refrigeration working medium of refrigerator etc.No matter adopt which kind of medium, present heat sink single medium runner that is, heat sink runner a kind of heat transfer medium that can only circulate can't switch another medium.Main cause is: the refrigeration working medium of alcohol, conduction oil or refrigerator etc. can make heat sink scope work at 0 ℃～-80 ℃, but often requires heat sink can reaching below-170 ℃, and this will use liquid nitrogen.When the liquid nitrogen feeding was circulated throughout the heat sink runner of alcohol, conduction oil or refrigeration working medium, alcohol, conduction oil or refrigeration working medium remaining in the runner will be frozen into solid, stop up even damage heat sink.So there is not the heat sink runner of shared two media before.Certainly, also have and lay the heat sink of two-way runner, but this heat sink structure complexity, the media flow situation is bad, poor temperature uniformity.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of novel space-environment facility heat-sink system is provided, and this heat-sink system can allow liquid nitrogen and the shared same heat sink runner of alcohol.So-called shared be not that liquid nitrogen and alcohol use simultaneously, but finish using when liquid nitrogen working medium, liquid nitrogen vaporization fully after, again alcohol working medium is fed, carry out periodic duty; After the alcohol periodic duty is finished, use the alcohol safety air emptying function of heat-sink system, alcohol is emptied completely, again liquid nitrogen working medium is fed.The safety that so realizes two kinds of working medium is switched.Switching by two kinds of media makes heat sink temperature adjustable between-163 ℃～+ 50 ℃.
Technical solution of the present utility model is:
The utility model comprises heat sink main body, heat sink surface RTD, etna, corrugated flexible hose excircle temperature detecting resistance sensor, row's alcohol valve, auxiliary row alcohol tank, nitrogen blow-off's valve and nitrogen source of the gas, and Fig. 1, Fig. 2 are seen in signal.
The heat sink main body structure is seen Fig. 1, Fig. 2.It is heat sink to adopt the plshy bone open structure to make, heat sink main body by house steward (feed liquor house steward) down, go up house steward (fluid house steward), with ribbing arm, corrugated flexible hose, auxiliary discharging tube etc. and form.Concrete structure is: with ribbing arm is welded by stainless steel arm and red copper or aluminium fin, and arm is welded on house steward and the following house steward, and last house steward and following house steward adopt stainless steel tube; Auxiliary discharge opeing (alcohol) pipe is welded on upper and lower house steward's Down Highway place more than one or one, and auxiliary discharging tube diameter is less than house steward and with ribbing arm diameter; Last house steward's liquid outlet and following house steward's inlet welding corrugated flexible hose.
The corrugated flexible hose excircle is established heater and temperature detecting resistance sensor, takes the electric insulation measure between heater and corrugated flexible hose, corrugated flexible hose excircle temperature detecting resistance sensor monitoring corrugated flexible hose temperature.Heat sink surface (arm fin surface) is established the heat sink surface RTD, monitoring heat sink surface temperature.
Last house steward's liquid outlet can be connected with alcohol circulation line, liquid nitrogen circulation line respectively with following house steward's inlet; Following house steward links to each other by corresponding valve with the nitrogen source of the gas with auxiliary liquid collecting (alcohol) case, can reclaim the raffinate of discharging in the heat sink main body runner by auxiliary liquid collecting (alcohol) case, and with the residual alcohol in nitrogen blow-off's heat sink main body runner.
The course of work that heat-sink system is switched to the alcohol circulation from the liquid nitrogen circulation is: observe the heat sink main body temperature by corrugated flexible hose excircle temperature detecting resistance sensor and heat sink surface RTD, when determining not had liquid nitrogen in the heat sink main body, with house steward's liquid outlet on the heat sink main body and following house steward's inlet and the disengagement of liquid nitrogen circulation line, be connected with the alcohol circulation line again.Do not have liquid nitrogen in the heat sink main body runner this moment, has only nitrogen, feeds alcohol liquid and can not produce any fault.Can begin the alcohol circulation, heat-sink system enters the alcohol state of cyclic operation.Finish heat-sink system from the switching of liquid nitrogen circulation to the alcohol circulation.
Heat-sink system from the alcohol circulation to the course of work that the liquid nitrogen circulation is switched is: after the alcohol circulation stopped, the row's of opening alcohol valve was gone into auxiliary liquid collecting (alcohol) case with the alcohol collection in the heat sink main body pipeline.At this moment, the alcohol that accumulates in last the person in charge flows into down by auxiliary discharging tube and is responsible for, and the alcohol in the arm also enters down the person in charge, enters auxiliary liquid collecting (alcohol) case by being responsible for down then; After treating that again liquid collecting (alcohol) case is assisted in alcohol-free inflow, the row's of cutting out alcohol valve opens etna, and heating makes remaining vaporized alcohol in the bellows, when corrugated flexible hose excircle temperature detecting resistance sensor displays temperature reaches more than 80 ℃, illustrate that remaining alcohol all evaporates.At this moment, open nitrogen blow-off's valve, with alcohol steam in the heat sink runner of nitrogen blow-off.At this moment, do not had alcohol liquid in the heat sink main body runner, fed liquid nitrogen and can not produce any fault.Last house steward's liquid outlet and following house steward's inlet and the disengagement of alcohol circulation line with heat sink main body are connected with the liquid nitrogen circulation line again, just can begin the liquid nitrogen circulation.Heat-sink system enters the liquid nitrogen state of cyclic operation, finishes heat-sink system from the switching of alcohol circulation to the liquid nitrogen circulation.
The characteristics of this heat-sink system are:
1) when heat sink be after the circulation of medium finishes with alcohol, switch to when being medium with the liquid nitrogen, the alcohol in heat sink is discharged by heat sink bottom house steward;
2) can not accumulate alcohol and drain into the bottom house steward from what arm flowed out among the house steward of top, mouthful flow out through row again by auxiliary discharging tube;
3) an alcohol specially collecting box is set, this case is in house steward bottom, bottom, and the alcohol among the house steward is flowed in this case fully;
4) import and export the alcohol that to discharge in the corrugated flexible hose and use evaporation etna heating evaporation, discharge with gaseous state;
5) be provided with nitrogen blow-off's structure in the system, can blow out residual alcohol.
This flow process guarantees that to greatest extent alcohol liquid discharges, and when liquid nitrogen can not form the freezing obstruction runner of alcohol during by heat sink runner, avoids heat sink cisco unity malfunction, even pipe explosion accident takes place.
The utility model beneficial effect compared with prior art is:
(1) same heat sink runner can compatible alcohol and the heat transferring medium of liquid nitrogen two media;
(2) solved the defective that the plshy bone open structure heat-sink can only adopt a kind of heat transferring medium;
(3) ensured and heat sinkly switched to LN by alcohol
2The time, the flow process operate as normal;
(4) dual channel (alcohol and LN have been avoided
2Runner is respectively arranged) make complexity, easily cause the shortcoming of gas leakage.
Description of drawings
Fig. 1 is a straight tubular heat sink structure schematic diagram of the present utility model;
Fig. 2 is the left view of straight tubular heat sink structure of the present utility model;
Fig. 3 is a disc heat sink structure schematic diagram of the present utility model;
Fig. 4 is the left view of disc heat sink structure of the present utility model.
Wherein: house steward, the auxiliary discharging tube of 10-, 11-heat sink surface RTD, 12-row alcohol valve, the auxiliary row of 13-alcohol tank, 14-nitrogen source of the gas, 15-nitrogen blow-off valve under 1-first etna, 2-first corrugated flexible hose, the last house steward of 3-, 4-arm, 5-fin, 6-corrugated flexible hose excircle temperature detecting resistance sensor, 7-second corrugated flexible hose, 8-second etna, the 9-.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is elaborated.
As shown in Figure 1, the utility model heat sink main body (straight-tube shape) is made of last house steward (fluid house steward) 3, following house steward (feed liquor house steward) 9, arm 4 and fin 5, first corrugated flexible hose 2, second corrugated flexible hose 7, auxiliary discharging tube 10 and first etna 1, first etna 8.Open row's radial hole on last house steward 3 and the following house steward 9, the two ends of with ribbing 5 arm 4 of semicircle shape are welded on house steward 3 and following house steward's 9 the corresponding radial hole.Fin 5 adopts welding manner and arm 4 to be combined into one.Last house steward 3 and following house steward's 9 one ends are sealed, the other end welds first corrugated flexible hose 2 and second corrugated flexible hose 7, in order to get rid of among the house steward 3 hydrops in the following pipe in arm welding position, the several auxiliary discharging tubes 10 of welding between last house steward 3 and following house steward 9, in order to remove hydrops in first corrugated flexible hose 2 and second corrugated flexible hose 7, establish the first etna heater 1 and second etna 8 at two bellows excircles; Temperature when heating in order to monitor two bellowss is established two corrugated flexible hose excircle temperature detecting resistance sensors 6; In order to monitor heat sink temperature, establish heat sink surface RTD 11.The left view of straight tubular heat sink structure as shown in Figure 2.
When the liquid nitrogen flow process is switched, discharge residual alcohol to auxiliary row's alcohol tank 13 from the alcohol flow process by row's alcohol valve 12; After residual alcohol has been arranged.By nitrogen blow-off's valve 15, use nitrogen source of the gas 14 to blow down heat sink middle residual alcohol steam.
As shown in Figure 3, utility model heat sink (discoid) is made of last house steward (fluid house steward) 3, following house steward (feed liquor house steward) 9, arm 4 and fin 5, first corrugated flexible hose 2, second corrugated flexible hose 7, auxiliary discharging tube 10 and first etna 1, first etna 8.Open radial hole on last house steward 3 and the following house steward 9, the two ends of with ribbing 5 arm 4 are welded on house steward 3 and following house steward's 9 the corresponding aperture.Fin 5 adopts welding manner and arm 4 to be combined into one.Seal at last house steward 3 and following house steward's 9 two ends, at last house steward 3 and following house steward's 9 centre position perforate and vertical welding first corrugated flexible hose 2 with the pipe semi-circle plane and second corrugated flexible hose 7.In order to get rid of among the house steward 3 hydrops in the two ends dead space pipe, weld two auxiliary discharging tubes 10 last house steward 3 and following house steward 9 two ends; In order to remove hydrops in first corrugated flexible hose 2 and second corrugated flexible hose 7, establish first etna 1 and second etna 8 at two bellows excircles; Temperature when heating in order to monitor two bellowss is established two corrugated flexible hose excircle temperature detecting resistance sensors 6; In order to monitor heat sink temperature, establish heat sink surface RTD 11.The left view of disc heat sink structure as shown in Figure 4.
When the liquid nitrogen flow process is switched, discharge residual alcohol to auxiliary row's alcohol tank 13 from the alcohol flow process by row's alcohol valve 12; After residual alcohol has been arranged.By nitrogen blow-off's valve 15, use nitrogen source of the gas 14 to blow down heat sink middle residual alcohol steam.
Claims (8)
1. dual-medium (liquid nitrogen and alcohol) compatible heat sink system for space environment simulation test equipment comprises heat sink main body, heat sink surface RTD, etna, corrugated flexible hose excircle temperature detecting resistance sensor, row's alcohol valve, auxiliary row alcohol tank, nitrogen blow-off's valve and nitrogen source of the gas; Heat sink main body comprises feed liquor house steward, fluid house steward, with ribbing arm about being welded on the house steward, heater and temperature detecting resistance sensor that the import corrugated flexible hose that is connected with the feed liquor house steward, the outlet corrugated flexible hose that is connected with the fluid house steward, bellows excircle are established, auxiliary discharging tube that is weldingly connected with house steward up and down etc., it is characterized in that: adopt the plshy bone open structure of forming by with ribbing arm of last house steward and following house steward, be provided with between last house steward and following house steward and assist discharging tube and be interconnected; Import and export the corrugated flexible hose excircle and be provided with heater and temperature detecting resistance; Be provided with auxiliary row's alcohol tank, nitrogen blow-off's alcohol structure.
2. according to the dual-medium (liquid nitrogen and alcohol) compatible heat sink system described in the claim 1, it is characterized in that: the feed liquor of heat sink main body and fluid house steward and arm adopt stainless steel, and the arm fin adopts red copper or aluminium.
3. according to the dual-medium (liquid nitrogen and alcohol) compatible heat sink system described in the claim 1, it is characterized in that: have auxiliary discharging tube more than one or.
4. according to the dual-medium (liquid nitrogen and alcohol) compatible heat sink system described in the claim 1, it is characterized in that: described auxiliary discharging tube is connected house steward's Down Highway place or goes up house steward's lowest part.
5. according to the dual-medium (liquid nitrogen and alcohol) compatible heat sink system described in the claim 1, it is characterized in that: electric insulation between bellows excircle heater and the bellows.
6. according to the dual-medium (liquid nitrogen and alcohol) compatible heat sink system described in the claim 1, it is characterized in that: described auxiliary discharging tube diameter is less than feed liquor and fluid house steward and with ribbing arm diameter of heat sink main body.
7. according to the dual-medium (liquid nitrogen and alcohol) compatible heat sink system described in the claim 1, it is characterized in that: be provided with auxiliary row's alcohol tank and row's alcohol valve.
8. according to the dual-medium (liquid nitrogen and alcohol) compatible heat sink system described in the claim 1, it is characterized in that: be provided with nitrogen blow-off's alcohol structure, alcohol steam in the heat sink pipeline blown down to use nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820183297U CN201384954Y (en) | 2008-12-23 | 2008-12-23 | Liquid nitrogen and alcohol double-medium compatible heat-sink system of space environment simulation test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820183297U CN201384954Y (en) | 2008-12-23 | 2008-12-23 | Liquid nitrogen and alcohol double-medium compatible heat-sink system of space environment simulation test equipment |
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|---|---|
| CN201384954Y true CN201384954Y (en) | 2010-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200820183297U Expired - Lifetime CN201384954Y (en) | 2008-12-23 | 2008-12-23 | Liquid nitrogen and alcohol double-medium compatible heat-sink system of space environment simulation test equipment |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806524A (en) * | 2010-04-09 | 2010-08-18 | 北京航空航天大学 | Design form of three-convolute plate structure heat sink |
| CN101839598A (en) * | 2010-05-21 | 2010-09-22 | 北京航空航天大学 | Design form of hexa-gyrate type plate structure heat sink |
| CN101869856A (en) * | 2010-05-21 | 2010-10-27 | 北京航空航天大学 | Four-rotary flat plate structured heat sink design form |
| CN101869857A (en) * | 2010-05-21 | 2010-10-27 | 北京航空航天大学 | Five-rotary flat plate structured heat sink design form |
| CN102175456A (en) * | 2011-01-28 | 2011-09-07 | 北京航空航天大学 | Straight cylindrical liquid-nitrogen liquid-helium double-medium compatible heat sink device and refrigeration method thereof |
| CN102607796A (en) * | 2012-03-07 | 2012-07-25 | 北京航空航天大学 | Large-size dual-heat sink nitrogen blowing system with adjustable temperature and operation method thereof |
| CN101576359B (en) * | 2008-12-23 | 2012-08-22 | 中国航天科技集团公司第五研究院第五一○研究所 | Dual-medium (liquid nitrogen and alcohol) compatible heat sink system for space environment simulation test equipment |
| CN109959184A (en) * | 2019-03-29 | 2019-07-02 | 北京卫星环境工程研究所 | Large space environment simulator gas-liquid mixing refrigeration system |
| CN113368920A (en) * | 2021-06-07 | 2021-09-10 | 上海交通大学 | Large-scale high low temperature environment simulation test system of two cold sources |
-
2008
- 2008-12-23 CN CN200820183297U patent/CN201384954Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101576359B (en) * | 2008-12-23 | 2012-08-22 | 中国航天科技集团公司第五研究院第五一○研究所 | Dual-medium (liquid nitrogen and alcohol) compatible heat sink system for space environment simulation test equipment |
| CN101806524A (en) * | 2010-04-09 | 2010-08-18 | 北京航空航天大学 | Design form of three-convolute plate structure heat sink |
| CN101839598A (en) * | 2010-05-21 | 2010-09-22 | 北京航空航天大学 | Design form of hexa-gyrate type plate structure heat sink |
| CN101869856A (en) * | 2010-05-21 | 2010-10-27 | 北京航空航天大学 | Four-rotary flat plate structured heat sink design form |
| CN101869857A (en) * | 2010-05-21 | 2010-10-27 | 北京航空航天大学 | Five-rotary flat plate structured heat sink design form |
| CN102175456A (en) * | 2011-01-28 | 2011-09-07 | 北京航空航天大学 | Straight cylindrical liquid-nitrogen liquid-helium double-medium compatible heat sink device and refrigeration method thereof |
| CN102175456B (en) * | 2011-01-28 | 2012-11-07 | 北京航空航天大学 | Straight cylindrical liquid-nitrogen liquid-helium double-medium compatible heat sink device and refrigeration method thereof |
| CN102607796A (en) * | 2012-03-07 | 2012-07-25 | 北京航空航天大学 | Large-size dual-heat sink nitrogen blowing system with adjustable temperature and operation method thereof |
| CN102607796B (en) * | 2012-03-07 | 2014-01-22 | 北京航空航天大学 | Large-size dual-heat sink nitrogen blowing system with adjustable temperature and operation method thereof |
| CN109959184A (en) * | 2019-03-29 | 2019-07-02 | 北京卫星环境工程研究所 | Large space environment simulator gas-liquid mixing refrigeration system |
| CN113368920A (en) * | 2021-06-07 | 2021-09-10 | 上海交通大学 | Large-scale high low temperature environment simulation test system of two cold sources |
| CN113368920B (en) * | 2021-06-07 | 2023-02-03 | 上海交通大学 | Double-cold-source large-scale high-low temperature environment simulation test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100120 Effective date of abandoning: 20081223 |