CN102009748A - 20K cold shield refrigerating device - Google Patents
20K cold shield refrigerating device Download PDFInfo
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- CN102009748A CN102009748A CN2009101952909A CN200910195290A CN102009748A CN 102009748 A CN102009748 A CN 102009748A CN 2009101952909 A CN2009101952909 A CN 2009101952909A CN 200910195290 A CN200910195290 A CN 200910195290A CN 102009748 A CN102009748 A CN 102009748A
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Abstract
The invention relates to spacecraft environment simulation test equipment and discloses a 20K cold shield refrigerating device which comprises a G-M refrigerator (26), wherein the G-M refrigerator (26) is installed on an installation tool (25) through a vacuum sealing surface, a cold shield shielding plate (23) is installed on and connected with a primary cold head (24) of the G-M refrigerator (26), and a secondary cold head (22) of the G-M refrigerator (26) is connected with a 20K cold shield (21) in a fastening and heat conducting way. The 20K cold shield refrigerating device is installed at the top in a vacuum simulation cabin (12) in a vacuum sealing way through the installation tool (25). The invention solves the problems of high development cost, long development cycle and the like of the traditional equipment and has the advantages of high running reliability of the equipment, simplified operation flow, lowered equipment running cost, shortened preparation time before system boot time, and the like.
Description
Technical field
The present invention relates to the spacecraft space-environment facility, especially a kind of cold screen fridge equipment of 20K that is installed in the vacuum boiler-plate with the heat sink cold-scarce scape of 100K.
Background technology
Satellite carried infrared acquisition remote sensing instrument is before emission, the dynamic ranges of whether normal for the detection channels serviceability of determining each detection channels output signal and the mathematical relation check detecting instrument of target physical parameter, as to determine instrument passage etc. need be carried out corresponding infrared radiation calibration and performance testing and be tested in the vacuum environment of spacecraft space environment simulation equipment.
Satellite carried infrared acquisition remote sensing instrument, fitness for purpose is being lower than ability normal operation under the temperature conditions of 105K, and when rail flew, it was to rely on all the time to lower the temperature towards the radiation refrigerator in cold black space.When carrying out the infrared radiation bracketing on ground, for being reduced to gradually, the temperature that makes cold of radiation refrigerator secondary is lower than 105K, guarantee its simulation precision requirement, be necessary for it cryogenic testing cold-scarce that is lower than 20K scape is provided, adopt cold screen to be test cold-scarce scape according to design.
At present, the refrigeration cool-down and the low temperature of the cold screen of 20K are kept, mostly adopt helium gas turbine swell refrigeration system as low-temperature receiver, the helium of ultralow temperature is provided, it is inner that helium enters into cold screen by the defeated cold pipe of Dewar pipe, cold screen is cooled, and provide certain cold, helium finally to be circulated back to helium gas turbine swell refrigeration system, again by system cools, send back to cold screen, form a circulation.Domestic cold screen generally adopts this refrigeration modes at present, but there is following drawback in this cold screen refrigeration modes:
(1) equipment development expense costliness, a cover helium gas turbine swell refrigeration system only wherein just must cost four or five hundred ten thousand yuan at least, up to ten million at most first expenses;
(2) the equipment development cycle long, generally need more than 18 months;
(3) because inner as need flow through cold screen of the helium of refrigerant, the manufacture craft of cold screen is required very high, but often still easy cold leakage, the cold helium that comes that spills can destroy degree of vacuum in the vacuum boiler-plate, influence is tested;
(4) helium gas turbine swell refrigeration system is very complicated, and operating process is loaded down with trivial details, reliability of operation is not high, and needs 4-7 days time purification system in advance before system boot.
The present invention relates to the cold screen fridge equipment of a kind of later-model 20K, do not find the explanation or the report of technology similar to the present invention at present, also do not collect both at home and abroad similarly data as yet.
Summary of the invention
In order to solve the problems of the technologies described above, reduce equipment development expense and lead time, the reliability of raising equipment operation, simplifying operation of equipment flow process, the object of the present invention is to provide the cold screen fridge equipment of a kind of 20K.Utilize the present invention effectively to address the above problem, and reach and reduce development cost, accelerate the lead time, reduce before the test purpose such as setup time.
In order to reach the foregoing invention purpose, the technical scheme that the present invention is adopted for its technical matters of solution provides the cold screen fridge equipment of a kind of 20K, and this device comprises:
The G-M fefrigerator is installed in the erector by vacuum seal face and loads onto, and installs on the one-level cold head of G-M fefrigerator and is connected with a cold screen sight shield, and the secondary cold head of G-M fefrigerator tightens heat conduction and is connected with a cold screen of 20K.The cold screen body of this 20K directly conducts refrigeration for the inner whole plate structure that does not have gas passage and weld seam by G-M fefrigerator secondary cold head.
The cold screen fridge equipment of a kind of 20K of the present invention owing to take above-mentioned technical scheme, therefore, has solved the problem of the cold screen refrigeration of spacecraft space environment simulation equipment vacuum boiler-plate in-to-in.By optimal design, in the vacuum boiler-plate, the cold screen that an operating temperature is lower than 20K is set, be used to the spacecraft test that the cold-scarce that is lower than 20K scape is provided.The cold screen of 20K is connected with the fastening heat conduction of secondary cold head of G-M fefrigerator; The cold screen sight shield of design and installation on the one-level cold head of G-M fefrigerator is for the cold screen of 20K provides the ambient temperature that is lower than 50K, to reduce the cold damage of cold screen; The G-M fefrigerator is installed in an erector by its vacuum seal face and loads onto; Frock is installed is installed in vacuum boiler-plate top by vacuum seal again.This equipment can satisfy the cooling and the refrigeration demand of the inner cold screen of spacecraft space environment simulation equipment vacuum boiler-plate, improve the reliability of equipment operation and simplified the operation of equipment flow process, efficiently solve the cold screen cooling of vacuum boiler-plate in-to-in 20K refrigeration problem, and, therefore has bigger using value because separate unit G-M fefrigerator only use takes about 200,000 yuan.The present invention has obtained following beneficial effect:
(1) greatly reduced the development cost of cold screen and refrigeration system thereof; (2) shortened the equipment development cycle; (3) fundamentally solved the problem of the cold leakage of cold screen; (4) simplified the operation of equipment flow process, improved reliability of system operation; (5) reduced systematic running cost with, shortened setup time before the system boot greatly.
Description of drawings
Fig. 1 is applied to have the structural representation of the vacuum boiler-plate of the heat sink cold-scarce scape of 100K for the cold screen fridge equipment of 20K of the present invention;
Fig. 2 is the assembling scheme drawing of G-M fefrigerator.
Mark among the figure: 11-is heat sink, 12-vacuum boiler-plate; The cold screen of 21-20K, 22-G-M fefrigerator secondary cold head, the cold screen sight shield of 23-, 24-G-M fefrigerator one-level cold head, 25-installs frock, 26-G-M fefrigerator.
The specific embodiment
The invention is intended to a kind of later-model 20K is provided cold screen fridge equipment.
Below in conjunction with description of drawings the preferred embodiments of the present invention.
Fig. 1 is applied to existing installation for the cold screen fridge equipment of 20K of the present invention, a kind of structural representation with vacuum boiler-plate 12 of the heat sink cold-scarce scape of 100K; Shown in the embodiment of Fig. 1, existing installation is a vacuum boiler-plate 12 with the heat sink 11 cold-scarce scapes of 100K.
20K of the present invention is cold, and the screen fridge equipment comprises, in vacuum boiler-plate 12, an operating temperature is set is lower than the cold screen 21 of 20K, is used to the spacecraft test that the cold-scarce that is lower than 20K scape is provided.The cold screen 21 of 20K is connected with the secondary cold head 22 fastening heat conduction of G-M fefrigerator 26; Cold screen sight shield 23 is installed, for the cold screen of 20K provides the ambient temperature that is lower than 50K, to reduce the cold damage of cold screen on the one-level cold head 24 of G-M fefrigerator 26; All G-M fefrigerators 26 are installed in one by its vacuum seal face and install on the frock 25; Frock 25 is installed is installed in vacuum boiler-plate 12 inner tops by vacuum seal again.The cold screen fridge equipment of 20K of the present invention can integral body directly take out from vacuum boiler-plate top, safeguards very convenient.
Fig. 2 is the assembling scheme drawing of G-M fefrigerator 26; As shown in Figure 2, present embodiment adopts at least five G-M fefrigerators 26, is uniformly distributed in and installs on the frock 25, and the cold screen 21 of 20K is connected with the secondary cold head 22 fastening heat conduction of G-M fefrigerator 26.
Below course of action of the present invention is described.
According to the requirement of test refrigerating capacity, determine the size of the cold screen 21 of 20K and the quantity of G-M fefrigerator 26; G-M fefrigerator 26 is installed on the installation frock 25 by vacuum seal face, colder screen sight shield 23 installations is connected on the one-level cold head 24 of G-M fefrigerator, then cold screen 21 installations of 20K are connected on the secondary cold head 22 of G-M fefrigerator 26; By being installed, frock 25 the said apparatus overall vacuum is sealed the top that is installed in the vacuum boiler-plate 12 at last.
During test, earlier vacuum boiler-plate 12 is vacuumized, to 100K heat sink 11 logical liquid nitrogen, set up the vacuum and low temperature background that is lower than 100K again; Start the G-M fefrigerator, after 6-8 hour, cold screen temperature will be reduced to below the 20K.
In sum, the invention provides the cold screen fridge equipment of a kind of later-model 20K, the present invention passes through optimal design, the cold screen fridge equipment of traditional 20K has been carried out optimizing innovation, so not only greatly reduced cold screen and refrigeration system thereof development cost, shortened the equipment development cycle, and fundamentally solved the problem of the cold leakage of cold screen, improved reliability of system operation, simplified the operation of equipment flow process, and reduced systematic running cost with, shortened setup time before the system boot greatly.This equipment can satisfy the demand of spacecraft thermal vacuum test to 20K test ambient temperature, has bigger economic benefit and application and popularization value.
Claims (4)
1. cold screen fridge equipment of 20K is characterized in that this device comprises:
G-M fefrigerator [26] is installed in by vacuum seal face and installs on the frock [25], the one-level cold head [24] of G-M fefrigerator [26] is gone up to install and is connected with a cold screen sight shield [23], and the secondary cold head [22] of G-M fefrigerator [26] tightens heat conduction and is connected with a cold screen of 20K [21].
2. the cold screen fridge equipment of 20K as claimed in claim 1 is characterized in that: the cold screen of described 20K [21] body directly conducts refrigeration for the inner whole plate structure that does not have gas passage and weld seam by G-M fefrigerator secondary cold head [22].
3. the cold screen fridge equipment of 20K as claimed in claim 1 is characterized in that: the cold screen fridge equipment of this 20K is installed in vacuum boiler-plate [12] inner top by frock [25] vacuum seal is installed, and can integral body directly take out from the top of vacuum boiler-plate [12].
4. the cold screen fridge equipment of 20K as claimed in claim 1 is characterized in that: the quantity of described G-M fefrigerator [26] requires to set according to the test refrigerating capacity, at least five, is uniformly distributed in and installs on the frock [25].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101952909A CN102009748A (en) | 2009-09-08 | 2009-09-08 | 20K cold shield refrigerating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101952909A CN102009748A (en) | 2009-09-08 | 2009-09-08 | 20K cold shield refrigerating device |
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| Publication Number | Publication Date |
|---|---|
| CN102009748A true CN102009748A (en) | 2011-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101952909A Pending CN102009748A (en) | 2009-09-08 | 2009-09-08 | 20K cold shield refrigerating device |
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| CN (1) | CN102009748A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2553411C1 (en) * | 2014-01-28 | 2015-06-10 | Открытое акционерное общество "Научно-исследовательский институт точных приборов" | Test bench for spacecraft radio electronic thermal tests |
| CN107539502A (en) * | 2016-07-18 | 2018-01-05 | 北京卫星环境工程研究所 | Temperature-adjustment pressure-adjustment device for spacecraft environment experiment |
| CN111232254A (en) * | 2020-01-09 | 2020-06-05 | 北京卫星环境工程研究所 | High-precision dynamically controllable temperature simulation device |
-
2009
- 2009-09-08 CN CN2009101952909A patent/CN102009748A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2553411C1 (en) * | 2014-01-28 | 2015-06-10 | Открытое акционерное общество "Научно-исследовательский институт точных приборов" | Test bench for spacecraft radio electronic thermal tests |
| CN107539502A (en) * | 2016-07-18 | 2018-01-05 | 北京卫星环境工程研究所 | Temperature-adjustment pressure-adjustment device for spacecraft environment experiment |
| CN107539502B (en) * | 2016-07-18 | 2019-05-14 | 北京卫星环境工程研究所 | Temperature-adjustment pressure-adjustment device for spacecraft environment test |
| CN111232254A (en) * | 2020-01-09 | 2020-06-05 | 北京卫星环境工程研究所 | High-precision dynamically controllable temperature simulation device |
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Application publication date: 20110413 |