CN102553306A - Open boiling liquid nitrogen system with liquid nitrogen recovery device - Google Patents
Open boiling liquid nitrogen system with liquid nitrogen recovery device Download PDFInfo
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- CN102553306A CN102553306A CN2010105990264A CN201010599026A CN102553306A CN 102553306 A CN102553306 A CN 102553306A CN 2010105990264 A CN2010105990264 A CN 2010105990264A CN 201010599026 A CN201010599026 A CN 201010599026A CN 102553306 A CN102553306 A CN 102553306A
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Abstract
The invention relates to space environment simulation equipment, and discloses an open boiling liquid nitrogen system with a liquid nitrogen recovery device. The device comprises a liquid nitrogen storage tank which is connected with thermal vacuum environment simulation equipment, and an evacuation pipe is arranged at the output port of the thermal vacuum environment simulation equipment. According to the invention, the device also comprises a gas-liquid separation filling shift device which is arranged on the evacuation pipe. The equipment in the invention can be used for solving the problem of recovery in gas-liquid separation of small open boiling liquid nitrogen systems, and has the characteristics of being low in investment, short in cost recovering cycle and improved in working conditions.
Description
Technical field
The present invention relates to space environment simulation equipment, particularly a kind of open type boiling liquid nitrogen system with liquid nitrogen retracting device.
Background technology
In the space environment simulation test,, need in test a large amount of cryogenic fluids such as liquid nitrogen for thermal vacuum test.Because the thermal vacuum test cycle is quite long, therefore consume a large amount of human and material resources and financial resources.For example large space environment simulator liquid nitrogen every day consumption is about ten tons, and the expense of the liquid nitrogen of single test purchase sometimes can reach units up to a million.
Large-scale liquid nitrogen system is furnished with nitrogen recycling liquefaction system more usually.The liquid nitrogen system of configurations such as the SOPEMEA thermal vacuum chamber of the U.S. " mark No. 1 " environment simulator, Ou Lian, the plain φ 14m of japanic acid space simulator; And the thermal vacuum equipment of two maximums of the former Soviet Union---BK600/300 and TBK thermal vacuum equipment have all carried out reclaiming and liquefaction again to the cold nitrogen that evaporates.Common gas liquefaction method has two types at present: a kind of is throttling liquefaction cycle (Linde circulation), another kind of for using the liquefaction cycle (Claude circulation) of turbo-expander.
Above gas liquefaction recovery method all is applied in the liquid nitrogen system large-scale, with pressure, and recycle object is a cryogenic gas, and its weak point is; The initial investment of recovery system is big, the cost recovery cycle is long.For small-sized open type boiling liquid nitrogen system, if adopt traditional gas liquefaction way of recycling, its cost performance is too low, and not as not reclaiming, at present, usually all with the direct emptying of liquid nitrogen, therefore, experimentation cost is very high.Device for the gas-liquid separation of small-sized open type boiling liquid nitrogen system is reclaimed is not seen relevant report.
Summary of the invention
In order to reduce experimentation cost, solve the problem of the gas-liquid separation recovery of small-sized open type boiling liquid nitrogen system, the object of the present invention is to provide a kind of open type boiling liquid nitrogen system with liquid nitrogen retracting device.Utilize the present invention, can the gas-liquid two-phase working medium of liquid nitrogen system outlet be realized separation, metaideophone, recycling, reduce the test energy consumption, practice thrift experimentation cost.
In order to reach the foregoing invention purpose; The technical scheme that the present invention is adopted for its technical problem of solution provides a kind of open type boiling liquid nitrogen system with liquid nitrogen retracting device; This device comprises that a liquid nitrogen storage tank is connected with a hot vacuum environment analog machine through the cryogenic system pipeline, and the delivery outlet of hot vacuum environment analog machine has a blowdown piping; According to the present invention, this device also comprises: on blowdown piping, also be provided with a by-pass valve control, be connected with a gas-liquid separation converted injection device; Described gas-liquid separation converted injection device is used for atmospheric gas nitrogen and separates with liquid nitrogen, and its inside comprises upper and lower two containers, and upper container is used for the emptying of gas nitrogen, and following container is connected with the input port of valve with the liquid nitrogen storage tank through pipeline, is used for storage and reclaims liquid nitrogen.
A kind of open type boiling liquid nitrogen system of the present invention with liquid nitrogen retracting device; Owing to take above-mentioned technical scheme, utilize a cover gas-liquid separation converted injection device that gas-liquid two-phase nitrogen is separated under normal pressure, and be pressurized to certain pressure certainly with in liquid nitrogen metaideophone to the liquid nitrogen storage tank; Do not influence simultaneously the stable operation of hot vacuum environment analog machine; Therefore, the invention solves the problem of the gas-liquid separation recovery of small-sized open type boiling liquid nitrogen system, with the liquid nitrogen of discharging recycling in vain originally; Practice thrift experimentation cost greatly, and have the advantages that investment is little, the cost recovery cycle short, improve working conditions.
Description of drawings
Fig. 1 is the structural representation of traditional open type boiling liquid nitrogen system;
Fig. 2 has the structural representation of the open type boiling liquid nitrogen system of liquid nitrogen retracting device for the present invention is a kind of.
The specific embodiment
Fig. 1 is the structural representation of traditional open type boiling liquid nitrogen system, and this device comprises: liquid nitrogen storage tank 1 is sent liquid nitrogen into hot vacuum environment analog machine 2 through the cryogenic system pipeline, again through blowdown piping emptying.Its operation principle is: in the system liquid nitrogen by liquid storage groove 1 through the cryogenic system pipeline get into hot vacuum environment analog machine 2 heat sink after; Directly through blowdown piping emptying; Liquid nitrogen in the system is gasification in a large number in flow process, through phase-change heat-exchange take away in the system and simulator in testpieces be radiated the heat on heat sink.
Because the cost performance that reclaims is low, prior art directly is disposed to the gas-liquid two-phase nitrogen of system outlet in the atmosphere usually.
Fig. 2 has the structural representation of the open type boiling liquid nitrogen system of liquid nitrogen retracting device for the present invention is a kind of; Shown in the embodiment of Fig. 2, according to the present invention, on the blowdown piping of open type boiling liquid nitrogen system, also be provided with a by-pass valve control, be connected with a gas-liquid separation converted injection device 3; Above-mentioned gas-liquid separation converted injection device 3 is used for atmospheric gas nitrogen and separates with liquid nitrogen, and its inside comprises upper and lower two containers, and upper container is used for the emptying of gas nitrogen, and following container is connected with the input port of valve with liquid nitrogen storage tank 1 through pipeline, is used for storage and reclaims liquid nitrogen.
Above-mentioned gas-liquid separation converted injection device 3 is the gas-liquid separation converted injection device of a vertical type cylinder shape double-yolked egg structure, all steel material.
Further the course of work of the present invention is described below.
The present invention connects a gas-liquid separation converted injection device in the liquid nitrogen system outlet that originally directly is discharged into the hot vacuum environment analog machine in the atmosphere; The gas nitrogen that this device adopts vertical type cylinder shape double-yolked egg structure, a covering device of all steel material to give off separates with liquid nitrogen; And with liquid nitrogen of short duration store into a certain amount of after in the automatically supercharging, metaideophone to the cryogenic liquid storage tank that links to each other with device; Realize that from the gas-liquid two-phase nitrogen that former blow-down pipe is discharged normal pressure separates the upper container of apparatus of the present invention: the direct emptying of gas nitrogen, liquid nitrogen flow into down in the container through upper container.Instantly after the container liquid nitrogen stored certain liquid level into, isolated liquid nitrogen was temporarily stored in the upper container, and following container is from supercharging, with recycle again in liquid nitrogen metaideophone to the liquid nitrogen storage tank.Instantly after the emptying of container liquid nitrogen, liquid flows into container down from upper container once more, so repeatedly, receives, is interrupted metaideophone continuously, thereby realizes the recycling of liquid nitrogen.
Claims (2)
1. the open type boiling liquid nitrogen system with liquid nitrogen retracting device comprises that a liquid nitrogen storage tank is connected with a hot vacuum environment analog machine through the cryogenic system pipeline, and the delivery outlet of hot vacuum environment analog machine has a blowdown piping; It is characterized in that this device also comprises: on blowdown piping, also be provided with a by-pass valve control, be connected with a gas-liquid separation converted injection device; Described gas-liquid separation converted injection device is used for atmospheric gas nitrogen and separates with liquid nitrogen, and its inside comprises upper and lower two containers, and upper container is used for the emptying of gas nitrogen, and following container is connected with the input port of valve with the liquid nitrogen storage tank through pipeline, is used for storage and reclaims liquid nitrogen.
2. open type boiling liquid nitrogen system as claimed in claim 1, it is characterized in that: described gas-liquid separation converted injection device is the gas-liquid separation converted injection device of a vertical type cylinder shape twin structure, all steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105990264A CN102553306A (en) | 2010-12-17 | 2010-12-17 | Open boiling liquid nitrogen system with liquid nitrogen recovery device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105990264A CN102553306A (en) | 2010-12-17 | 2010-12-17 | Open boiling liquid nitrogen system with liquid nitrogen recovery device |
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| CN102553306A true CN102553306A (en) | 2012-07-11 |
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| CN2010105990264A Pending CN102553306A (en) | 2010-12-17 | 2010-12-17 | Open boiling liquid nitrogen system with liquid nitrogen recovery device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105214751A (en) * | 2015-09-16 | 2016-01-06 | 中国船舶重工集团公司第七一〇研究所 | A kind of nonmetal single box vacuum constant temperature tank |
| CN105402605A (en) * | 2015-12-15 | 2016-03-16 | 上海启元空分技术发展股份有限公司 | Device and method for recycling liquid nitrogen through vacuum pump |
| CN105526500A (en) * | 2016-01-08 | 2016-04-27 | 上海启元空分技术发展股份有限公司 | Liquid nitrogen recovering device and method |
| CN111035966A (en) * | 2019-12-25 | 2020-04-21 | 苏州焜原光电有限公司 | Liquid gas circulation system |
| CN115326870A (en) * | 2022-08-11 | 2022-11-11 | 北京航空航天大学 | Low pressure low tube internal flow boiling heat transfer experimental system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0254778A1 (en) * | 1986-07-15 | 1988-02-03 | Pittsburgh-Des Moines Corporation | Liquid nitrogen distribution system |
| SU1610191A1 (en) * | 1988-09-27 | 1990-11-30 | Предприятие П/Я А-3605 | Cryogenic plant |
| JPH07165200A (en) * | 1993-12-14 | 1995-06-27 | Ishikawajima Harima Heavy Ind Co Ltd | Simulation test device for outer space |
| KR20010114026A (en) * | 2000-06-20 | 2001-12-29 | 장근호 | Shroud cooling device for thermal vacuum chamber |
| CN200948374Y (en) * | 2006-06-30 | 2007-09-19 | 厦门大学 | Gas-liquid separating device applied in the continuous flow system |
-
2010
- 2010-12-17 CN CN2010105990264A patent/CN102553306A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0254778A1 (en) * | 1986-07-15 | 1988-02-03 | Pittsburgh-Des Moines Corporation | Liquid nitrogen distribution system |
| SU1610191A1 (en) * | 1988-09-27 | 1990-11-30 | Предприятие П/Я А-3605 | Cryogenic plant |
| JPH07165200A (en) * | 1993-12-14 | 1995-06-27 | Ishikawajima Harima Heavy Ind Co Ltd | Simulation test device for outer space |
| KR20010114026A (en) * | 2000-06-20 | 2001-12-29 | 장근호 | Shroud cooling device for thermal vacuum chamber |
| CN200948374Y (en) * | 2006-06-30 | 2007-09-19 | 厦门大学 | Gas-liquid separating device applied in the continuous flow system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105214751A (en) * | 2015-09-16 | 2016-01-06 | 中国船舶重工集团公司第七一〇研究所 | A kind of nonmetal single box vacuum constant temperature tank |
| CN105402605A (en) * | 2015-12-15 | 2016-03-16 | 上海启元空分技术发展股份有限公司 | Device and method for recycling liquid nitrogen through vacuum pump |
| CN105402605B (en) * | 2015-12-15 | 2018-08-14 | 上海启元空分技术发展股份有限公司 | A kind of device and method recycling liquid nitrogen using vacuum pump |
| CN105526500A (en) * | 2016-01-08 | 2016-04-27 | 上海启元空分技术发展股份有限公司 | Liquid nitrogen recovering device and method |
| CN111035966A (en) * | 2019-12-25 | 2020-04-21 | 苏州焜原光电有限公司 | Liquid gas circulation system |
| CN115326870A (en) * | 2022-08-11 | 2022-11-11 | 北京航空航天大学 | Low pressure low tube internal flow boiling heat transfer experimental system |
| CN115326870B (en) * | 2022-08-11 | 2024-07-02 | 北京航空航天大学 | Experimental system for boiling heat exchange by flowing in low-pressure pipe |
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Application publication date: 20120711 |