CN113694557B - Water vapor trapping device in vacuum environment - Google Patents
Water vapor trapping device in vacuum environment Download PDFInfo
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- CN113694557B CN113694557B CN202111114251.9A CN202111114251A CN113694557B CN 113694557 B CN113694557 B CN 113694557B CN 202111114251 A CN202111114251 A CN 202111114251A CN 113694557 B CN113694557 B CN 113694557B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0003—Condensation of vapours; Recovering volatile solvents by condensation by using heat-exchange surfaces for indirect contact between gases or vapours and the cooling medium
- B01D5/0009—Horizontal tubes
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a vapor trapping device in a vacuum environment, which comprises a trolley support and a trap body, wherein the trapping device body is installed on the trolley support, a heat exchange component for trapping vapor is arranged in the trapping device body, liquid nitrogen flows in the heat exchange component, a horn mouth is formed at the top of the trapping device for collecting vapor, a water collector for collecting melted water is arranged at the bottom of the trolley support, and a liquid discharge port for discharging the melted water is communicated with the bottom of the water collector. According to the invention, the condensation pipes are distributed in a structure of being sparse from top to bottom and dense from top to bottom, and the condensation pipes in the arrangement design can prevent water vapor from condensing too thick ice on the air inlet surface to block a water vapor inlet channel, so that a sufficient water vapor circulation gap is ensured to be formed in the trapping device body, the flow speed of the water vapor is reduced, the water vapor is convenient to desublimate on a low-temperature surface, the condensation efficiency of the water vapor is improved, meanwhile, the flow space of non-condensed gas can be increased, and the vacuumizing is convenient.
Description
Technical Field
The invention relates to the technical field of spacecraft vacuum thermal tests, in particular to a water vapor trapping device in a vacuum environment.
Background
The spacecraft vacuum thermal test is used for testing the thermal characteristics of the spacecraft and related products in a vacuum environment during in-orbit operation. The space suit is a special space product for maintaining the living environment of astronauts. Wherein the water sublimator is an important component of the space suit. The water sublimator is a special phase-change heat dissipation device. The main principle of the method is that in a vacuum environment, water can be sublimated from ice directly to form vapor, a large amount of heat is taken away, and therefore excessive waste heat inside the space suit is effectively discharged. Water sublimers need to be tested in a vacuum thermal test environment prior to formal use. According to the principle of the water sublimator, a large amount of water vapor is released by the water sublimator in the working process. Therefore, in the vacuum test process, a device is needed to absorb a large amount of water vapor, the water vapor is directly desublimated from a gaseous state to frost, and the vacuum environment for test is ensured.
As the structure of the heat exchanger of the water vapor trapping device, the heat exchanger is mainly characterized in that firstly, water is trapped, frost with a certain thickness is formed outside the pipe, secondly, after the frost is formed, non-condensable gas is pumped away by a vacuum pump through the water vapor trapping device, however, the thickness of the frost layer is increased along with the increase of time, so that the area of the gas passing through the tubular column is reduced, the circulation space of the gas is reduced, the flow speed of the water vapor is accelerated, and the condensation efficiency of the water vapor is influenced.
Disclosure of Invention
The invention aims to: in order to solve the above problems, a water vapor trap device in a vacuum environment has been proposed.
In order to achieve the purpose, the invention adopts the following technical scheme: the vapor trapping device in the vacuum environment comprises a trolley support, wherein a trapping device body is mounted on the trolley support, a heat exchange component for trapping vapor is arranged in the trapping device body, liquid nitrogen circulates in the heat exchange component, the top of the trapping device body forms a windward side of an open structure, a water collector for collecting melted water is arranged at the bottom of the trolley support, and a liquid discharging port for discharging the melted water is communicated with the bottom of the water collector.
Preferably, the heat exchange component comprises a condensation pipe and condensation fins, eight rows of condensation pipes are installed on the inner side of the trapping device body, and the condensation fins are embedded on the outer portion of the condensation pipes.
Preferably, the uppermost row of the condensation pipes is a first row, the arrangement distance between the first two rows of the condensation pipes is 120mm, the distance between the third row of the condensation pipes and the fourth row of the condensation pipes is 100mm, and the distance between the last three rows of the condensation pipes is 80 mm.
Preferably, the condensation pipe and the condensation fins are both made of 304 stainless steel pipes with the outer diameter of 25mm and the wall thickness of 2mm, and the length of the condensation pipe is 1100 mm.
Preferably, the outer end welding of condenser pipe has the fin that is horizontal equidistance and distributes, and the fin is the copper product.
Preferably, the height of the fin is 12mm, the thickness is 0.5mm, and the distance between two adjacent fins is 3 mm.
Preferably, the open end of the condensation pipe is connected with a corrugated pipe through a flange so as to enable liquid nitrogen to enter and exit.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. this application is through being equipped with the condenser pipe on catcher device body, be equipped with the condensation fin outside the condenser pipe, the range interval between two preceding rows of condenser pipes is 120mm, interval between third row and the fourth row condenser pipe is 100mm, interval between the last three rows condenser pipe is 80mm, be crisscross the distribution between the condenser pipe of two adjacent rows, this kind of condenser pipe of arranging the design can prevent that vapor from condensing into too thick ice at the windward side, block up the passageway, guarantee trapping device body inside has sufficient circulation space, so that vapor is wherein flow velocity slows down, be convenient for condense on the low temperature face, improve vapor's condensation efficiency, can increase the flow space of the gas that does not condense simultaneously, be convenient for take out the vacuum.
2. This application is through being equipped with the fin on the condenser pipe, and the height of fin is 12mm, and thickness is 0.5mm, and the interval of two adjacent fins is 3mm, adopts laser welding between fin and the condenser pipe, can effectively increase the area of catching water of vapor entrapment device.
Drawings
FIG. 1 illustrates a front view provided in accordance with an embodiment of the present invention;
FIG. 2 illustrates a top view provided in accordance with an embodiment of the present invention;
FIG. 3 illustrates a side view provided in accordance with an embodiment of the present invention;
fig. 4 illustrates a cross-sectional view of a condensation duct provided according to an embodiment of the present invention;
fig. 5 is a schematic view illustrating a connection between a condensation pipe and a corrugated pipe according to an embodiment of the present invention.
Illustration of the drawings:
1. a trolley bracket; 2. a trapping device body; 3. the windward side; 4. a condenser tube; 5. a condensing fin; 6. a flange; 7. a bellows; 8. a water collector; 9. a liquid discharging port.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a vapor trapping device in a vacuum environment comprises a trolley support 1, a trapping device body 2 is installed on the trolley support 1, a heat exchange component for trapping vapor is arranged inside the trapping device body 2, liquid nitrogen circulates inside the heat exchange component, a windward side 3 of a horn mouth structure is formed at the top of the trapping device body 2, a water collector 8 for collecting melted water is arranged at the bottom of the trolley support 1, a liquid discharge port 9 for discharging the melted water is communicated with the bottom of the water collector 8, vapor discharged from a water sublimator is cooled by liquid nitrogen in the heat exchange component through the trapping device body 2, moisture in the vapor is condensed and formed into ice on the outer surface of the heat exchange component, residual dry air is discharged to the outside of the trapping device body 2 through an air outlet, when the heat exchange component does not work, the ice formed on the outer end face of the heat exchange component melts into water, flows into the water collector 9 and then is discharged out of the water collector 8 through the liquid discharge port 9, the area required by the cold wall required by frosting is 5.5 square meters by calculation. In addition, the air-cooled wall surface needs to meet the requirement of total air-cooled amount, the water frost thickness is within 10mm, the pumping speed and ultimate vacuum of the low-temperature cold wall surface to the water vapor are not influenced, and the density of the water frost formed on the 80K surface is about 0.1g/cm 3 14 kg of water cream with the volume of 140000cm 3 The required cold wall area is 14 square meters, 1.5 times of margin is taken, the required low-temperature cold wall area is 21 square meters, the minimum area of the required cold wall is 21 square meters through comprehensive consideration of frost formation and vacuum, and the margin of the cold wall is increased by considering the influence of uneven freezing thickness parametersThe final heat exchange area of the heat exchange component is designed according to a square meter of 25.
Specifically, as shown in fig. 1-3, the heat exchange component includes condenser pipe 4 and condensing fin 5, eight rows of condenser pipes 4 are installed to the inboard of entrapment device body 2, condensing fin 5 has been inlayed to the surface of condenser pipe 4, one row of condenser pipe 4 of the superiors is first row, the range interval between two rows of preceding condenser pipes 4 is 120mm, the interval between third row and the fourth row of condenser pipe 4 is 100mm, the interval between three rows of condenser pipe 4 is 80mm at last, be crisscross the distribution between the condenser pipe 4 of two adjacent rows, condenser pipe 4 of this kind of design of arranging can prevent that humid air from condensing into ice at windward side 3, block up the passageway.
Calculating the heat dissipation area of the water vapor trapping device:
the cooling area of a single pipe is as follows: f 1 ＝πdL＝3.14×0.025×1.1＝0.08635㎡
The area of the condensing fin 5 outside the single pipe is as follows:
total cooling area of water vapor trap: f ═ F 1 +F 2 )×42＝0.852×56＝47.7㎡。
Specifically, as shown in fig. 1-3, the outer end of the condensing tube 4 is welded with the condensing fins 5 which are distributed horizontally and equidistantly, the condensing fins 5 are made of copper materials, the height of each condensing fin 5 is 12mm, the thickness of each condensing fin is 0.5mm, the distance between every two adjacent condensing fins 5 is 3mm, and the condensing fins 5 and the condensing tube 4 are welded by laser, so that the water catching area of the water vapor catching device can be effectively increased.
Specifically, as shown in fig. 5, the open end of the condenser tube 4 is connected with a corrugated tube 7 for the liquid nitrogen to enter and exit through a flange 6, the corrugated tube 7 plays a heat insulation role, and can also compensate partial heat expansion and cold contraction amount and installation angle errors of the liquid nitrogen tube, and the inlet and the outlet are in a detachable mode, so that the detachment can be completed only by detaching screws on the flange 6.
The previous description of the embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (1)
1. The vapor trapping device in the vacuum environment comprises a trolley support (1) and is characterized in that a trapping device body (2) is mounted on the trolley support (1), a heat exchange component for trapping vapor is arranged in the trapping device body (2), liquid nitrogen circulates in the heat exchange component, the top of the trapping device body (2) forms a windward side (3) of a bell-mouth structure, a water collector (8) for collecting melted water is arranged at the bottom of the trolley support (1), and a liquid discharging port (9) for discharging the melted water is communicated with the bottom of the water collector (8);
the heat exchange component comprises condensation pipes (4) and condensation fins (5), eight rows of condensation pipes (4) are installed on the inner side of the trapping device body in a staggered mode, and the condensation pipes (4) are all provided with the condensation fins (5);
the uppermost row of the condensation pipes (4) is a first row, the arrangement distance between the first two rows of the condensation pipes (4) is 120mm, the distance between the third row of the condensation pipes and the fourth row of the condensation pipes (4) is 100mm, and the distance between the last three rows of the condensation pipes (4) is 80 mm;
the condenser pipes (4) are all 304 stainless steel pipes with the outer diameter of 25mm and the wall thickness of 2mm, and the length of each condenser pipe (4) is 1100 mm;
condensing fins (5) which are horizontally and equidistantly distributed are welded at the outer end of the condensing pipe (4), and the condensing fins (5) are made of copper materials;
the height of each condensing fin (5) is 12mm, the thickness of each condensing fin is 0.5mm, and the distance between every two adjacent condensing fins (5) is 3 mm;
the opening end of the condensation pipe (4) is connected with a corrugated pipe (7) for enabling liquid nitrogen to enter and exit through a flange (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111114251.9A CN113694557B (en) | 2021-09-23 | 2021-09-23 | Water vapor trapping device in vacuum environment |
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| CN202111114251.9A CN113694557B (en) | 2021-09-23 | 2021-09-23 | Water vapor trapping device in vacuum environment |
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| CN113694557A CN113694557A (en) | 2021-11-26 |
| CN113694557B true CN113694557B (en) | 2022-09-02 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2731386Y (en) * | 2004-07-28 | 2005-10-05 | 陆亚俊 | Outdoor wide/narrow sheet and fin-like heat exchanger of air source heat pump |
| CN2760479Y (en) * | 2004-04-08 | 2006-02-22 | 上海理工大学 | Highly effective water vessel |
| CN202199148U (en) * | 2011-05-25 | 2012-04-25 | 段春红 | Novel spiral finned smoke condenser |
| KR101691593B1 (en) * | 2016-05-25 | 2017-01-02 | 주식회사 삼흥에너지 | water-trap and removal water system having the same |
| CN106275492A (en) * | 2015-05-29 | 2017-01-04 | 北京卫星环境工程研究所 | Spacecraft thermal vacuum test distillation water collecting device |
| CN107166984A (en) * | 2017-07-14 | 2017-09-15 | 翁志远 | Condenser and heat energy utilization system |
| CN111076600A (en) * | 2018-10-19 | 2020-04-28 | 日立江森自控空调有限公司 | Fin, heat exchanger and air conditioner |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203772046U (en) * | 2013-08-14 | 2014-08-13 | 昆明晨农绿色产品有限公司 | Water catching device of foam factories |
| CN106403634A (en) * | 2016-09-14 | 2017-02-15 | 东南大学 | Anti-icing condenser |
| CN206399215U (en) * | 2016-12-28 | 2017-08-11 | 粉嫩公主生物科技有限公司耒阳分公司 | A kind of retracting device of biological pure water in prodn. of frozen foodstuff |
-
2021
- 2021-09-23 CN CN202111114251.9A patent/CN113694557B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2760479Y (en) * | 2004-04-08 | 2006-02-22 | 上海理工大学 | Highly effective water vessel |
| CN2731386Y (en) * | 2004-07-28 | 2005-10-05 | 陆亚俊 | Outdoor wide/narrow sheet and fin-like heat exchanger of air source heat pump |
| CN202199148U (en) * | 2011-05-25 | 2012-04-25 | 段春红 | Novel spiral finned smoke condenser |
| CN106275492A (en) * | 2015-05-29 | 2017-01-04 | 北京卫星环境工程研究所 | Spacecraft thermal vacuum test distillation water collecting device |
| KR101691593B1 (en) * | 2016-05-25 | 2017-01-02 | 주식회사 삼흥에너지 | water-trap and removal water system having the same |
| CN107166984A (en) * | 2017-07-14 | 2017-09-15 | 翁志远 | Condenser and heat energy utilization system |
| CN111076600A (en) * | 2018-10-19 | 2020-04-28 | 日立江森自控空调有限公司 | Fin, heat exchanger and air conditioner |
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| CN113694557A (en) | 2021-11-26 |
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