CN104236846B - Built-in vacuum presses air diffuser again - Google Patents
Built-in vacuum presses air diffuser again Download PDFInfo
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- CN104236846B CN104236846B CN201410436440.1A CN201410436440A CN104236846B CN 104236846 B CN104236846 B CN 104236846B CN 201410436440 A CN201410436440 A CN 201410436440A CN 104236846 B CN104236846 B CN 104236846B
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- Prior art keywords
- face
- guide ring
- air diffuser
- pressed
- mozzle
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Abstract
Air diffuser is pressed again the invention discloses a kind of built-in vacuum,Guide ring including multiple rescinded angle cones,Mozzle,Mounting flange,Tracheae is pressed into again,Multiple pressure valve flange,Guide ring fixing muscle,Multiple guide rings are arranged concentrically and with common front end face and rear end face and the conical sidewall being parallel to each other side by side,Be gradually reduced to rear end face cone diameter from front end face and on front end face formed concentric circles projection,The some guide ring fixing muscles being radially arranged on the circumference that multiple guide rings pass through concentric circles are welded and are positioned together,Outermost guide ring carries out sequential welding and fixes on rear end face with one end of mozzle,The other end of mozzle carries out sequential welding and fixes with one end of mounting flange,The other end of mounting flange and tracheae is pressed into again and tracheae and multiple pressure valve flange is pressed into again continuously is welded and ensure the vacuum leakproofness of weld seam.
Description
Technical field
The invention belongs to Vacuum Field, and in particular to a kind of test specimen of elimination high speed direct projection gas shock internal vacuum chamber,
Tank inner structure, at the same do not influence again it is multiple pressure speed, be not take up internal vacuum chamber space, it is adaptable to space environment simulation equipment and its
The key device of its all kinds of vacuum equipment.
Background technology
At present, vacuum equipment is generally required and for internal vacuum chamber to revert to atmospheric pressure, pressure balance after off-test
Gate is opened afterwards takes out test specimen.By that large number quipments are pressed through with journey again it has been observed that air-flow is straight at a high speed after multiple pressure valve is opened
Inject in vacuum chamber and produce stronger impulsive force, test specimen and vacuum chamber for the equipment in the test specimen and vacuum chamber in vacuum chamber
Interior structure can produce displacement and vibration, and this is all not allowed to.Some special process equipment are such as：Include setting for powder dirt
It is standby, if press through journey again to take no action to that powder will be produced to fly upward the consequence for polluting whole vacuum chamber.
At present, domestic vacuum equipment control presses through the method and structure device of Cheng Tongchang uses again：1. hand-operated valve/aperture is adjusted
Section valve regulating flow is slowly pressed again；2. the multiple pressure mouthful of internal vacuum chamber installs baffle plate or internal multiple pressure pipeline bending.
The multiple laminated structure of both the above can reduce multiple pressure speed.Wherein the first control difficulty is big, and cannot avoid behaviour
Make the influence that error is produced；Need the inner space of occupancy vacuum chamber for second, cause vacuum-chamber dimensions increase, cost to increase,
And also certain turbulent flow can be produced.
Therefore, it is necessary to provide a kind of reliable, internal vacuum chamber space is not take up, while not influenceing multiple pressure speed again
Test specimen, the multiple pressure air diffuser device of tank inner structure of high speed direct projection gas shock internal vacuum chamber can be eliminated.
The content of the invention
It is an object of the invention to provide a kind of simple structure, easy to process, it is easy to handling it is reliable, be not take up vacuum
Chamber inner space, while do not influence again it is multiple pressure speed test specimen, the tank that can eliminate high speed direct projection gas shock internal vacuum chamber
The built-in vacuum of inner structure presses air diffuser again
To achieve the above objectives, the technical solution adopted by the present invention is：
Built-in vacuum presses the air diffuser to include again：Guide ring (guide shell), the water conservancy diversion of multiple rescinded angle cones (frustum of a cone)
Pipe, mounting flange, tracheae, multiple pressure valve flange, guide ring fixing muscle are pressed into again, multiple guide rings are arranged concentrically simultaneously side by side
With common front end face and rear end face and the conical sidewall being parallel to each other, gradually subtract to rear end face cone diameter from front end face
Projection small and that concentric circles is formed on front end face, some water conservancy diversion being radially arranged on the circumference that multiple guide rings pass through concentric circles
The welding of ring fixing muscle is positioned together, and outermost guide ring carries out sequential welding and fixes on rear end face with one end of mozzle,
The other end of mozzle carries out sequential welding and fixes with one end of mounting flange, the other end of mounting flange and is pressed into tracheae and multiple again
Tracheae is pressed into continuously to be welded and ensure the vacuum leakproofness of weld seam with multiple pressure valve flange.
Wherein, all structural members use stainless steel material.
Preferably, guide ring fixing muscle is uniform in the way of circumference in equal parts on concentric circle.More preferably with the quartering
The mode of circumference is uniform；It is further preferred that some guide ring fixing muscles extend to the concentric circles center of circle nearby and it is equidistant with the center of circle
Set.
Preferably, it is equidistantly positioned between multiple guide rings and the inclination angle of guide ring is 45-60 degree.
Wherein, inclination angle, spacing, the height of the adjustable guide ring 1 of requirement according to multiple pressure interface specification or air-flow dissipation distance
The internal diameter of degree and mozzle, can eliminate gas shock and meeting and not influence the multiple requirement for pressing speed to reach.
The present invention has following beneficial effect：
(1) test specimen, the tank inner structure of high speed direct projection gas shock internal vacuum chamber are eliminated；
(2) internal vacuum chamber space is not take up, without expanding vacuum-chamber dimensions, reduces cost；
(3) multiple pressure speed is not influenceed；
(4) journey, lifting reliability are pressed through again without control.
Brief description of the drawings
Fig. 1 a are the front view that built-in vacuum of the invention presses air diffuser again；
Fig. 1 b are the side view that built-in vacuum of the invention presses air diffuser again；
Wherein：1- guide rings, 2- mozzles, 3- mounting flanges, 4- is pressed into tracheae, 5- multiple pressure valve flanges, 6- again
Guide ring fixing muscle.
Fig. 2 presses air diffuser scheme of installation again for built-in vacuum of the invention
Wherein：21- vacuum chambers, 22- test specimens, 23- air-flow dissipations position, 24- crimps mouth again, 25- sealing rings, 26- this hair
Bright multiple pressure air diffuser, 27- multiple pressure valves, A is air-flow dissipation equilibrium distance.
Specific embodiment
Introduced below is as the specific embodiment of present invention, below by specific embodiment to the present invention
Content is made further to illustrate.Certainly, description following detailed description is only the content of example different aspect of the invention, and
Should not be construed as limiting the invention scope.
Fig. 1 is that built-in vacuum of the invention presses diffuser design schematic diagram again, and the built-in vacuum presses air diffuser bag again
Include：The guide ring (guide shell) 1, mozzle 2 of multiple rescinded angle cones (frustum of a cone), mounting flange 3, tracheae 4, multiple pressure are pressed into again
Valve interface flange 5, guide ring fixing muscle 6, multiple guide rings 1 are arranged concentrically and with common front end face and rear end face side by side
And the conical sidewall being parallel to each other, it is gradually reduced to rear end face cone diameter from front end face and concentric circles is formed on front end face
Projection, multiple guide rings 1 are welded by some guide ring fixing muscles 6 being radially arranged on the circumference of concentric circles and are positioned at one
Rise, outermost guide ring 1 carries out sequential welding and fixes on rear end face with one end of mozzle 2, the other end and the peace of mozzle 2
The one end for filling flange 3 carries out sequential welding and fixes, and the other end of mounting flange 3 and is pressed into tracheae 4 again and is pressed into tracheae 4 again with multiple pressure
Valve interface flange 5 is continuously welded and is ensured the vacuum leakproofness of weld seam.Mounting flange 3, tracheae 4, multiple pressure valve are pressed into again
The material of door interface flange 5 will meet vacuum leakproofness requirement, must not defective and small opening.Mounting flange 3, multiple pressure valve interface method
Blue 5 sealing surface must not have cut, and surface extra coarse degree must not be less than 3.2.All structural members use stainless steel material.
Preferably, guide ring fixing muscle is uniform in the way of circumference in equal parts on concentric circle.More preferably with the quartering
The mode of circumference is uniform；It is further preferred that some guide ring fixing muscles extend to the concentric circles center of circle nearby and it is equidistant with the center of circle
Set.
Preferably, it is equidistantly positioned between multiple guide rings and the inclination angle of guide ring is 45-60 degree.
Wherein, inclination angle, spacing, the height of the adjustable guide ring 1 of requirement according to multiple pressure interface specification or air-flow dissipation distance
The internal diameter of degree and mozzle, can eliminate gas shock and meeting and not influence the multiple requirement for pressing speed to reach.
Need to clean, dry after the completion of air diffuser welding, then carry out helium mass spectrum vacuum leak hunting test, it is qualified after can make
With.Fig. 2 shows that built-in vacuum of the invention presses air diffuser scheme of installation again.Generally, it is provided with examination in vacuum chamber 21
Part 22, the equilibrium distance dissipated according to the location of air-flow dissipation position 23 and air-flow is provided with multiple crimping mouth 24, this hair
Be arranged on its front end face on multiple crimping mouth 24 by bright air diffuser 26, and the rear end face of radiator passes through multiple pressure valve flange 5
Connection multiple pressure valve 27, sealing ring 25 is set between multiple crimping mouth and mounting flange 3, installs the equipment such as multiple pressure valve, multiple pressure
After valve 27 is opened, air can enter air diffuser in the presence of pressure difference, and the guiding of tracheae 4, mozzle 2 is pressed into again in air diffuser
Lower arrival guide ring 1, air deflecting is filled with inside container the air-flow for becoming backward in the presence of guide ring inclination angle and is changed
Air-flow stroke directions, obtain bigger diffusion area, reduce air-flow dissipation equilibrium distance A, increase the sky in vacuum chamber
Between utilization scope, eliminate test specimen, the tank inner structure of high speed direct projection gas shock internal vacuum chamber, at the same do not influence again it is multiple pressure speed
Rate, it is not take up internal vacuum chamber space.
Although detailed description being given to specific embodiment of the invention above and being illustrated, it should be noted that
We can carry out various equivalent changes and modification to above-mentioned implementation method with conception of the invention, and the function produced by it is made
With still without departing from specification and accompanying drawing covered it is spiritual when, all should be within protection scope of the present invention.
Claims (7)
1. be used to being connected to the vacuum that vacuum chamber crimps on mouth again and press air diffuser again, including multiple rescinded angle cones guide ring,
Mozzle, mounting flange, tracheae, multiple pressure valve flange, guide ring fixing muscle are pressed into again, multiple guide rings set with one heart side by side
Put and with common front end face and rear end face and the conical sidewall being parallel to each other, from front end face to rear end face cone diameter by
Projection decrescence small and that concentric circles is formed on front end face, what is be radially arranged on the circumference that multiple guide rings pass through concentric circles is some
The welding of guide ring fixing muscle is positioned together, and outermost guide ring carries out continuous solid welding on rear end face with one end of mozzle
Fixed, the other end of mozzle carries out sequential welding and fixes with one end of mounting flange, the other end of mounting flange and is pressed into tracheae again
And be pressed into tracheae and multiple pressure valve flange again and continuously welded and ensure the vacuum leakproofness of weld seam, vacuum chamber is provided with
Multiple crimping mouth, the guide ring front end face of air diffuser is arranged on the multiple crimping mouth.
2. air diffuser as claimed in claim 1, wherein, guide ring fixing muscle is on concentric circle in the way of circumference in equal parts
Uniformly.
3. air diffuser as claimed in claim 2, wherein, the mode of circumference in equal parts is the mode of quartering circumference.
4. the air diffuser as described in claim any one of 1-3, wherein, it is attached that some guide ring fixing muscles extend to the concentric circles center of circle
It is equidistantly positioned closely and with the center of circle.
5. the air diffuser as described in claim any one of 1-3, wherein, it is equidistantly positioned between multiple guide rings and guide ring
Inclination angle is 45-60 degree.
6. the air diffuser as described in claim any one of 1-3, wherein, according to multiple pressure interface specification or air-flow dissipation distance will
The internal diameter of inclination angle, spacing, height and the mozzle of adjustment guide ring is sought, gas shock can be eliminated and not shadow can be met to reach
Ring the requirement for pressing speed again.
7. the air diffuser as described in claim any one of 1-3, wherein, all structural members use stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410436440.1A CN104236846B (en) | 2014-08-29 | 2014-08-29 | Built-in vacuum presses air diffuser again |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410436440.1A CN104236846B (en) | 2014-08-29 | 2014-08-29 | Built-in vacuum presses air diffuser again |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104236846A CN104236846A (en) | 2014-12-24 |
| CN104236846B true CN104236846B (en) | 2017-06-09 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410436440.1A Expired - Fee Related CN104236846B (en) | 2014-08-29 | 2014-08-29 | Built-in vacuum presses air diffuser again |
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| CN (1) | CN104236846B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108212528A (en) * | 2018-03-16 | 2018-06-29 | 国电科学技术研究院有限公司 | A kind of wet static dedusting gas diversion tube of circular cross-section |
| CN113559642A (en) * | 2021-07-15 | 2021-10-29 | 常州江南冶金科技有限公司 | Reverse spray standing wave dust removal cooling tower |
| CN114563153B (en) * | 2022-04-28 | 2022-07-01 | 中国空气动力研究与发展中心超高速空气动力研究所 | Ultrahigh-speed pneumatic test device for accelerating gas test through track |
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| CN2222876Y (en) * | 1995-04-28 | 1996-03-20 | 佛山市永生空调风嘴配件厂 | Dispersion flow air outlet nozzle |
| US5501101A (en) * | 1994-01-25 | 1996-03-26 | Purcell; James R. | Demonstration wind tunnel |
| CN2605509Y (en) * | 2002-12-05 | 2004-03-03 | 许浩先 | Steel air diffuser |
| CN200974946Y (en) * | 2006-09-29 | 2007-11-14 | 上海鲜绿真空保鲜设备有限公司 | Vacuum peculiar smell removing equipment |
| CN201134049Y (en) * | 2007-12-19 | 2008-10-15 | 中国电力科学研究院 | Emergency pressure recovery system |
| CN102359860A (en) * | 2011-07-18 | 2012-02-22 | 北京航空航天大学 | Clean vacuum system for engine plume test study and vacuum pumping repressing method thereof |
| CN102455211A (en) * | 2010-10-20 | 2012-05-16 | 北京卫星环境工程研究所 | Performance testing system for quartz crystal microbalance (QCM) |
| CN203007318U (en) * | 2012-12-03 | 2013-06-19 | 武汉钢铁(集团)公司 | Throttling device for pre-pressing of RH vacuum chamber and pre-pressing system comprising same |
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2014
- 2014-08-29 CN CN201410436440.1A patent/CN104236846B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5501101A (en) * | 1994-01-25 | 1996-03-26 | Purcell; James R. | Demonstration wind tunnel |
| CN2222876Y (en) * | 1995-04-28 | 1996-03-20 | 佛山市永生空调风嘴配件厂 | Dispersion flow air outlet nozzle |
| CN2605509Y (en) * | 2002-12-05 | 2004-03-03 | 许浩先 | Steel air diffuser |
| CN200974946Y (en) * | 2006-09-29 | 2007-11-14 | 上海鲜绿真空保鲜设备有限公司 | Vacuum peculiar smell removing equipment |
| CN201134049Y (en) * | 2007-12-19 | 2008-10-15 | 中国电力科学研究院 | Emergency pressure recovery system |
| CN102455211A (en) * | 2010-10-20 | 2012-05-16 | 北京卫星环境工程研究所 | Performance testing system for quartz crystal microbalance (QCM) |
| CN102359860A (en) * | 2011-07-18 | 2012-02-22 | 北京航空航天大学 | Clean vacuum system for engine plume test study and vacuum pumping repressing method thereof |
| CN203007318U (en) * | 2012-12-03 | 2013-06-19 | 武汉钢铁(集团)公司 | Throttling device for pre-pressing of RH vacuum chamber and pre-pressing system comprising same |
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| 舱外航天服试验舱紧急复压系统研制;周永康等;《航天医学与医学工程》;20121231;第25卷(第6期);第2.3节 * |
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|---|---|
| CN104236846A (en) | 2014-12-24 |
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