CN109351079A - Polluting device is isolated after a kind of infrared detector dewar assembly connection atmosphere - Google Patents
Polluting device is isolated after a kind of infrared detector dewar assembly connection atmosphere Download PDFInfo
- Publication number
- CN109351079A CN109351079A CN201811317273.3A CN201811317273A CN109351079A CN 109351079 A CN109351079 A CN 109351079A CN 201811317273 A CN201811317273 A CN 201811317273A CN 109351079 A CN109351079 A CN 109351079A
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- Prior art keywords
- strainer
- welding
- air inlet
- infrared detector
- isolated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0001—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0002—Casings; Housings; Frame constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/106—Ring-shaped filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
Abstract
The invention discloses polluting device is isolated after a kind of infrared detector dewar assembly connection atmosphere.Isolation polluting device is mainly made of gas outlet connector, outlet velar plate, strainer top board, gas outlet strainer, strainer lower platen, desiccant rack, dust filter screen, porous snorkel, shell, air inlet strainer, strainer pressure ring, air inlet connections, air inlet cover board and desiccant after deflating for infrared detector dewar assembly open pipe.The configuration of the present invention is simple, it is reliable effectively solve the problems, such as that dust and steam are mixed into component internal when infrared detector dewar assembly carries out open pipe bleed air operation, have the function of that protection component detector avoids pollution.
Description
Technical field
The present invention relates to infrared detector dewar assembly technologies, in particular to one kind in infrared detector module connection atmosphere
Afterwards, it is installed on infrared detector dewar assembly exhaust outlet, for filtering and being isolated the device of dust and steam.
Background technique
Refrigeration type infrared detector component has a wide range of applications in space flight infrared regime, the performance of infrared detector module
It is that high spatial resolution IR sensor thinks highly of the technical indicator wanted.It is needed before transmission to red under Vacuum Package state at present
External detector component carries out open pipe bleed air operation, allows component that can keep component by the vacuum environment of space in space
Vacuum state.This period before transmitting is arrived after open pipe at present, component internal will be fully exposed among atmospheric environment, ring
Dust and steam in border during this period of time can all be mixed into component internal.When component refrigeration, these impurity will be adsorbed in cold end
Detector surface, this working performance that will be will greatly affect.It is longer to be exposed to the time in atmospheric environment for component simultaneously, is mixed into
The dust steam of component internal will be more, and these pollutants are difficult to remove from component internal, can even lead when serious
Cause the failure of high spatial resolution infrared remote sensing instrument.
In order to avoid the pollution of dust steam etc., at present when carrying out open pipe operation, two kinds of methods can be generally used, first is that
Shorten component open pipe to the time interval of transmitting, reduce the time of internal exposure atmosphere, enter in this way the steam of component internal with
Dust can also be reduced.Second is that wrapping up open pipe mouth after component open pipe with dust filter screen, preventing dust from entering component internal.Side
Method one can shorten the time of inner detector exposure atmosphere, but satellite other planned time nodes are limited by when practical operation,
It is difficult to control the time；Method two can prevent the intrusion of dust, but can not prevent the intrusion of steam.
Summary of the invention
The object of the present invention is to provide polluting device is isolated after a kind of infrared detector dewar assembly connection atmosphere, solve
When infrared detector dewar assembly restores normal pressure from vacuum state open pipe, foreign matter and dust due to negative pressure suction assembly inside, shadow
The problem of ringing detector performance；Reducing steam intrusion in atmosphere simultaneously influences deliquescence caused by detector.
Structure of the invention is as shown in Figure 1, it includes: gas outlet connector 1, outlet velar plate 2, strainer top board 3, outlet
Mouthful strainer 4, strainer lower platen 5, desiccant rack 6, dust filter screen 7, porous snorkel 8, shell 9, air inlet strainer 10,
Strainer pressure ring 11, air inlet connections 12, air inlet cover board 13, desiccant 14.
It is characterized by: one 1-1 of welding boss of gas outlet connector 1 and three 2-2 of welding boss of outlet velar plate 2 pass through
Laser welding is integral, and five 12-1 of welding boss of air inlet connections 12 passes through with eight 13-3 of welding boss of air inlet cover board 13
Laser welding is integral, and the assemble welding face 8-2 of porous snorkel 8 and seven 13-2 of welding boss of air inlet cover board 13 are by swashing
Photocoagulation is integral, 7 sets of dust filter screen porous snorkel 8 cylindrical outer side and be connected by being glued, air inlet filter
Net 10 is placed between desiccant rack 6 and strainer pressure ring 11, the erection welding position 6-2 and strainer pressure of desiccant rack 6
The assembly through-hole 11-1 of ring 11 is integral by laser welding, and desiccant 14 is placed between shell 9 and desiccant rack 6,
Gas outlet strainer 4 is placed between strainer top board 3 and strainer lower platen 5, four 8-1 of welding boss of porous snorkel 8 and filter
The welding mounting hole 3-1 of online pressing plate 3 is welded into one by laser welding, two 2- of welding boss of shell 9 and outlet velar plate 2
1, six 13-1 of welding boss of air inlet cover board 13 is welded into one by laser welding.
1 material of gas outlet connector is stainless steel, and shape is cylindrical type.Side is welding one 1-1 of boss, the other side
For M6 standard thread connector, there is a round vent in cylindrical center.
2 material of outlet velar plate is stainless steel, is wafer type, there are two 2-1 of welding boss, the other side in side
There is three 2-2 of welding boss, there is a round vent at center.
3 material of strainer top board is stainless steel, and shape is wafer type, and there is a welding mounting hole 3-1 at center, week
It encloses and is evenly equipped with 12-18 round vent.
4 material of gas outlet strainer is red copper or stainless steel, and shape is round thin slice, with a thickness of 0.2-0.3mm, mesh
Number is 100-150.
5 material of strainer lower platen is stainless steel, and shape is wafer type, and there is assembly one 5-1 of through-hole at center, week
It encloses and is evenly equipped with 12-18 round vent.
6 material of desiccant rack is stainless steel, and shape is cylindrical shape, and assembly two 6-1 of through-hole is arranged at top,
One erection welding position 6-2 is arranged at bottom, and cylinder lower part is evenly equipped with 12-18 round vent.
7 material of dust filter screen is red copper or stainless steel, and shape is cylindrical shape, with a thickness of 0.2-0.3mm, mesh number
For 200-250.
8 material of porous snorkel is stainless steel, is cylinder type, and four 8-1 of welding boss, stack shell week are arranged at top
It is with 55-70 round air inlet, an assemble welding face 8-2 is arranged at bottom.
9 material of shell is stainless steel, and shape is cylinder type；
10 material of air inlet strainer is stainless steel or red copper, is circular thin slice, with a thickness of 0.2-0.3mm, mesh
Number is 100-150.
11 material of strainer pressure ring is stainless steel, and shape is wafer type, and there is an assembly through-hole 11-1 in centre, surrounding
It is evenly equipped with 12-18 round air inlet.
12 material of air inlet connections is stainless steel, is cylindrical type, and side is welding five 12-1 of boss, and the other side is
There are a round vent in M6 standard thread connector, cylindrical center.
13 material of air inlet cover board is stainless steel, and shape is wafer type, and there is six 13-1 of welding boss in side,
Six 13-1 of boss is welded, there is seven 13-2 of welding boss in centre, and there is eight 13-3 of welding boss in the centre of the other side, intermediate
There is a round vent.
The desiccant 14 is Kiselgel A desiccant, and shape is spheric granules, diameter 2-3mm, aperture 2-3nm,
Specific surface area 600-650m2/ g, adsorbance: being 28%-32% when RH=90.
Isolation polluting device structure of the invention realizes that process is as follows:
1. first five 12-1 of welding boss of air inlet connections 12 and eight 13-3 of welding boss of air inlet cover board 13 are passed through
Laser is welded into one, after the assemble welding face 8-2 of porous snorkel 8 and seven 13-2 of welding boss of air inlet cover board 13 are passed through
Laser is welded into one, then by 7 sets of the dust filter screen outsides in porous snorkel 8, and is linked into an integrated entity by being glued.
2. air inlet strainer 10 is mounted on 6 bottom of desiccant rack, strainer pressure ring 11 is then mounted on air inlet
Above strainer 10, and the assembly through-hole 11-1 of the erection welding position 6-2 of desiccant rack 6 and strainer pressure ring 11 is passed through into laser
It is integrally welded.
3. shell 9 and six 13-1 of welding boss of air inlet cover board 13 is integral by laser welding, then it will dry
Assembly two 6-1 of through-hole of agent rack 6 is on four 8-1 of welding boss of porous snorkel 8.
4. desiccant 14 is put into the position between desiccant rack 6 and shell 9.
5. one 5-1 of assembly through-hole of strainer lower platen 5 to be installed on to four 8-1 of welding boss of porous snorkel 8, then will
Gas outlet strainer 4 is installed on four 8-1 of welding boss of porous snorkel 8, then the welding mounting hole 3-1 of strainer top board 3 is pacified
Installation position loaded on porous snorkel 8 is simultaneously welded into one with four 8-1 of welding boss of porous snorkel 8 by laser.
6. three 2-2 of welding boss of one 1-1 of welding boss of gas outlet connector 1 and outlet velar plate 2 is passed through Laser Welding
It is connected into one, then two 2-1 of welding boss of outlet velar plate 2 is welded into one with shell 9 by laser.
The principle of the present invention is as follows:
The device connects in Dewar component exhaust pipe mouth, when the Dewar component of vacuum state carry out open pipe bleed air operation when
It waits, ambient atmosphere enters from air inlet, and dust is stopped by strainer when passing through strainer, then by being inhaled when desiccant region by desiccant
Attached water vapour, last clean gas enter component internal.
The invention has the advantages that
1. the configuration of the present invention is simple, easy to operate, cheap.
2. the effect that dust and water protection vapour may be implemented in the present invention.
3. the present invention has when Dewar component cavity is connected to atmosphere, steam and dust is stopped to enter component cavity, protected
The effect of internal detector.
Detailed description of the invention
Fig. 1 is the schematic diagram that polluting device is isolated；
In figure:
1-gas outlet connector；
1-1-welding boss one；
2-outlet velar plates；
3-strainer top boards；
4-gas outlet strainers；
5-strainer lower platens；
6-desiccant racks；
7-dust filter screens；
8-porous snorkels；
9-shells；
10-air inlet strainers；
11-strainer pressure rings；
12-air inlet connections；
12-1-welding boss five；
13-air inlet cover boards；
14-desiccant；
Fig. 2 is gas outlet cover plate schematic diagram；
In figure:
2-1-welding boss two；
2-2-welding boss three；
Fig. 3 is strainer top board schematic diagram；
In figure:
3-1-welding mounting hole；
Fig. 4 is strainer lower platen schematic diagram；
In figure:
5-1-assembly through-hole one；
Fig. 5 is desiccant rack schematic diagram；
In figure:
6-1-assembly through-hole two；
6-2-erection welding position；
Fig. 6 is porous snorkel schematic diagram；
In figure:
8-1-assemble welding boss four；
8-2-assemble welding face；
Fig. 7 is strainer pressure ring schematic diagram；
In figure:
11-1-assembly through-hole；
Fig. 8 is air inlet cover plate schematic diagram.
In figure:
13-1-welding boss six；
13-2-welding boss seven；
13-3-welding boss eight.
Specific embodiment
Specific implementation of the patent mode is described in further detail with reference to the accompanying drawing, as shown in Figure 1, its master
Want implementation method as follows:
1. being first processed by shot blasting air inlet connections 12, air inlet cover board 13, then it is cleaned by ultrasonic with acetone, alcohol and is done
Only, then five 12-1 of welding boss of air inlet connections 12 and eight 13-3 of welding boss of air inlet cover board 13 are assembled,
And it is integral by laser welding.
2. porous snorkel 8 is processed by shot blasting, is cleaned by ultrasonic completely with acetone, alcohol；Dust filter screen 7 is selected not
Become rusty steel strainer, thickness 0.2mm, mesh number 250, and the acetone of dust filter screen 7, alcohol are cleaned by ultrasonic completely, then by dust
7 sets of filter screen on the cylindrical body outer wall of porous snorkel 8, and are glued together.
3. the assemble welding face 8-2 of porous snorkel 8 and seven 13-2 of welding boss of air inlet cover board 13 are assembled,
And it is integral by laser welding.
4. shell 9 is processed by shot blasting, is cleaned by ultrasonic with acetone, alcohol completely, then by the side cylindrical end of shell 9
Face and six 13-1 of assemble welding boss of air inlet cover board 13 are assembled, and integral by laser welding.
5. desiccant rack 6, strainer pressure ring 11 are processed by shot blasting, are cleaned by ultrasonic completely with acetone, alcohol；Air inlet
Mouth strainer 10 selects stainless steel material, thickness 0.2mm, and the acetone of air inlet strainer 10, alcohol are cleaned by ultrasonic by mesh number 150
Completely, successively by the erection welding position of air inlet strainer 10, assembly the through-hole 11-1 and desiccant rack 6 of strainer pressure ring 11
602 are assembled, and by laser welding it is integral, then by two 6-1 of assembly through-hole of desiccant rack 6 and will it is porous lead to
Four 8-1 of welding boss of tracheae 8 is assembled.
6. desiccant 14 selects Kiselgel A desiccant, shape is spheric granules, and diameter 2mm, aperture 2nm compare table
Area 650m2Adsorbance: desiccant 14 30% when RH=90, is put into the storage between desiccant rack 6 and shell 9 by/g
Position.
7. strainer top board 3, strainer lower platen 5 are processed by shot blasting, are cleaned by ultrasonic completely with acetone, alcohol；Outlet
Mouth strainer 4 selects stainless steel material, thickness 0.2mm, and the acetone of gas outlet strainer 4, alcohol are cleaned by ultrasonic dry by mesh number 150
Only；Then by strainer lower platen 5 assembly one 5-1 of through-hole, gas outlet strainer 4, strainer top board 3 welding mounting hole 3-1 according to
Secondary four 8-1 of assemble welding boss with porous snorkel 8 is assembled, and integral by laser welding.
8. gas outlet connector 1 and outlet velar plate 2 are processed by shot blasting, are cleaned by ultrasonic completely, then with acetone, alcohol
One 1-1 of welding boss of gas outlet connector 1 and three 2-2 of welding boss of outlet velar plate 2 are assembled, and pass through Laser Welding
It is connected into one.
9. two 2-1 of welding boss of outlet velar plate 2 and the other side cylinder end face of shell 9 are assembled, and pass through
Laser welding is integral.
Claims (10)
1. polluting device is isolated after a kind of infrared detector dewar assembly connection atmosphere, comprising: gas outlet connector (1), gas outlet
Cover board (2), strainer top board (3), gas outlet strainer (4), strainer lower platen (5), desiccant rack (6), dust filter screen
(7), porous snorkel (8), shell (9), air inlet strainer (10), strainer pressure ring (11), air inlet connections (12), air-inlet cover
Plate (13), desiccant (14), it is characterised in that:
The welding boss one (1-1) of the gas outlet connector (1) passes through with the welding boss three (2-2) of outlet velar plate (2)
Laser welding is integral, the welding boss five (12-1) of air inlet connections (12) and the welding boss eight of air inlet cover board (13)
(13-3) is integral by laser welding, the welding in the assemble welding face (8-2) and air inlet cover board (13) of porous snorkel (8)
Boss seven (13-2) is integral by laser welding, and dust filter screen (7) covers the cylindrical outer side in porous snorkel (8) and passes through
Splicing is connected, and air inlet strainer (10) is placed between desiccant rack (6) and strainer pressure ring (11), and desiccant is placed
The assembly through-hole (11-1) of the erection welding position (6-2) of frame (6) and strainer pressure ring (11) is integral by laser welding, desiccant
(14) it is placed between shell (9) and desiccant rack (6), gas outlet strainer (4) is placed on strainer top board (3) and strainer
Between lower platen (5), the welding boss four (8-1) of porous snorkel (8) and the welding mounting hole (3-1) of strainer top board (3)
It is welded into one by laser welding, the welding boss two (2-1) of shell (9) and outlet velar plate (2), air inlet cover board (13)
Welding boss six (13-1) is welded into one by laser welding.
2. polluting device is isolated after a kind of infrared detector dewar assembly connection atmosphere according to claim 1, feature exists
In: gas outlet connector (1) material is stainless steel, and shape is cylindrical type, and side is welding boss one (1-1), the other side
For M6 standard thread connector, there is a round vent in cylindrical center.
3. polluting device is isolated after a kind of infrared detector dewar assembly connection atmosphere according to claim 1, feature exists
In: outlet velar plate (2) material is stainless steel, is wafer type, there are a welding boss two (2-1), the other side in side
There is a welding boss three (2-2), there is a round vent at center.
4. polluting device is isolated after a kind of infrared detector dewar assembly connection atmosphere according to claim 1, feature exists
In: strainer top board (3) material is stainless steel, and shape is wafer type, and there is a welding mounting hole (3-1) at center, week
It encloses and is evenly equipped with 12-18 round vent.
5. polluting device is isolated after a kind of infrared detector dewar assembly connection atmosphere according to claim 1, feature exists
In: strainer lower platen (5) material is stainless steel, and shape is wafer type, and there is an assembly through-hole one (5-1) at center, week
It encloses and is evenly equipped with 12-18 round vent.
6. polluting device is isolated after a kind of infrared detector dewar assembly connection atmosphere according to claim 1, feature exists
In: desiccant rack (6) material is stainless steel, and shape is cylindrical shape, and an assembly through-hole two (6-1) is arranged at top,
One erection welding position (6-2) is arranged at bottom, and cylinder lower part is evenly equipped with 12-18 round vent.
7. polluting device is isolated after a kind of infrared detector dewar assembly connection atmosphere according to claim 1, feature exists
In: porous snorkel (8) material is stainless steel, is cylinder type, and a welding boss four (8-1), stack shell week are arranged at top
It is with 55-70 round air inlet, an assemble welding face (8-2) is arranged at bottom.
8. polluting device is isolated after a kind of infrared detector dewar assembly connection atmosphere according to claim 1, feature exists
In: strainer pressure ring (11) material is stainless steel, and shape is wafer type, and there is an assembly through-hole (11-1) in centre, surrounding
It is evenly equipped with 12-18 round air inlet.
9. polluting device is isolated after a kind of infrared detector dewar assembly connection atmosphere according to claim 1, feature exists
In: air inlet connections (12) material is stainless steel, is cylindrical type, and side is welding boss five (12-1), and the other side is
There are a round vent in M6 standard thread connector, cylindrical center.
10. polluting device is isolated after a kind of infrared detector dewar assembly connection atmosphere according to claim 1, feature exists
In: air inlet cover board (13) material is stainless steel, and shape is wafer type, and there is a welding boss six (13-1) in side,
There is a welding boss seven (13-2) among welding boss six (13-1), there is an eight (13- of welding boss in the centre of the other side
3), there is a round vent in centre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811317273.3A CN109351079B (en) | 2018-11-07 | 2018-11-07 | Infrared detector dewar subassembly UNICOM atmosphere back isolation pollution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811317273.3A CN109351079B (en) | 2018-11-07 | 2018-11-07 | Infrared detector dewar subassembly UNICOM atmosphere back isolation pollution device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109351079A true CN109351079A (en) | 2019-02-19 |
| CN109351079B CN109351079B (en) | 2020-11-24 |
Family
ID=65344471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811317273.3A Active CN109351079B (en) | 2018-11-07 | 2018-11-07 | Infrared detector dewar subassembly UNICOM atmosphere back isolation pollution device |
Country Status (1)
| Country | Link |
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| CN (1) | CN109351079B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5288469A (en) * | 1992-03-16 | 1994-02-22 | Envirosurgical, Inc. | Surgery plume filter device |
| CN201470297U (en) * | 2009-08-18 | 2010-05-19 | 中国北车集团大同电力机车有限责任公司 | Portable dryer |
| WO2013004917A1 (en) * | 2011-07-07 | 2013-01-10 | Ecocat Oy | New purifying assembly |
| CN205164320U (en) * | 2015-11-30 | 2016-04-20 | 四川旭阳药业有限责任公司 | High -efficiency filter for compressed air |
| CN105920983A (en) * | 2016-06-08 | 2016-09-07 | 珠海市思卡净化技术有限公司 | Compressed air drying and filtering drum |
-
2018
- 2018-11-07 CN CN201811317273.3A patent/CN109351079B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5288469A (en) * | 1992-03-16 | 1994-02-22 | Envirosurgical, Inc. | Surgery plume filter device |
| CN201470297U (en) * | 2009-08-18 | 2010-05-19 | 中国北车集团大同电力机车有限责任公司 | Portable dryer |
| WO2013004917A1 (en) * | 2011-07-07 | 2013-01-10 | Ecocat Oy | New purifying assembly |
| CN205164320U (en) * | 2015-11-30 | 2016-04-20 | 四川旭阳药业有限责任公司 | High -efficiency filter for compressed air |
| CN105920983A (en) * | 2016-06-08 | 2016-09-07 | 珠海市思卡净化技术有限公司 | Compressed air drying and filtering drum |
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| Publication number | Publication date |
|---|---|
| CN109351079B (en) | 2020-11-24 |
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