CN103629362B - A kind of wind-tunnel telescopic section Dual-layer air-filled sealed device - Google Patents
A kind of wind-tunnel telescopic section Dual-layer air-filled sealed device Download PDFInfo
- Publication number
- CN103629362B CN103629362B CN201310692772.1A CN201310692772A CN103629362B CN 103629362 B CN103629362 B CN 103629362B CN 201310692772 A CN201310692772 A CN 201310692772A CN 103629362 B CN103629362 B CN 103629362B
- Authority
- CN
- China
- Prior art keywords
- shaped rubber
- pressing plate
- support
- pressure bladder
- rubber bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Sealing Devices (AREA)
Abstract
A kind of wind-tunnel telescopic section Dual-layer air-filled sealed device, relates to mechanical seal field.It comprises support, connecting-tube nozzle, two pipelines, two pressure bladders, pressing plate, two shaped rubber bars.Pressure bladder is arranged in the mounting hole of support; Pressing plate is fixed on frame bottom.The first half of each shaped rubber bar is placed in a mounting hole of support by the mode that step is spacing, the lower portion of each shaped rubber bar is in the seal groove of pressing plate; When sealing is desired, outside pressurized air enters from connecting-tube nozzle, enter two pressure bladders through two pipelines simultaneously, pressure bladder is expanded and promotes special-shaped rubber strip to extend bottom pressing plate, seal until formed between the Lower Half of shaped rubber bar and rotary flange; When not needing sealing, pressure bladder is outwards exitted by pipeline, and special-shaped rubber strip is retracted to pressing plate inside, departs from rotary flange.Present invention decreases the wear extent of Stamping Steel Ribbon, extend working life, improve sealing reliability, reduce user cost.
Description
Technical field
The present invention relates to mechanical seal field, particularly for the seal arrangement of wind-tunnel motion.
Background technique
Existing wind-tunnel motion air inflation sealing device is individual layer, and cannot support sealing surface, very easily cause the wearing and tearing of Sealing, need often change, user cost is high.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, provides a kind of wind-tunnel telescopic section Dual-layer air-filled sealed device, reduces the wear extent of Stamping Steel Ribbon, extend working life, improve sealing reliability, reduce user cost.
Technical solution of the present invention is: a kind of wind-tunnel telescopic section Dual-layer air-filled sealed device, comprises support, connecting-tube nozzle, two pipelines, two pressure bladders, pressing plate, two shaped rubber bars; Described connecting-tube nozzle is fixed on the sidewall of support, and the input end of connecting-tube nozzle is connected with outside pressurized air supplier; The bottom of support has two mounting holes, and the rotary flange of wind-tunnel telescopic section is positioned at the below of frame bottom, has gap between rotary flange end face and frame bottom; Every one end of bar pipeline is connected with the output terminal of connecting-tube nozzle, and the other end is connected with the input end of a pressure bladder; Pressure bladder is arranged in the mounting hole of support; Pressing plate is fixed on frame bottom, pressing plate has two seal grooves; The first half of each shaped rubber bar is placed in a mounting hole of support by the mode that step is spacing, the lower portion of each shaped rubber bar is in the seal groove of pressing plate; The first half of shaped rubber bar has the arc-shaped slot coordinated with pressure bladder; The Lower Half of shaped rubber bar is the column structure of curved end; When sealing is desired, outside pressurized air enters from connecting-tube nozzle, enter two pressure bladders through two pipelines simultaneously, pressure bladder is expanded and promotes special-shaped rubber strip to extend bottom pressing plate, seal until formed between the Lower Half of shaped rubber bar and rotary flange; When not needing sealing, pressure bladder is outwards exitted by pipeline, and special-shaped rubber strip is retracted to pressing plate inside, departs from rotary flange.
The Lower Half of described shaped rubber bar has the gap of 1mm when non-tight state and between seal groove.
The material of described shaped rubber bar is nitrile butadiene rubber, and the Vickers hardness number of pressure bladder is 56.
The present invention compared with prior art beneficial effect is:
(1) the present invention is by pressure bladder inflation and venting, controls the distortion of shaped rubber bar, both ensure that seal request during work, and ensured that again special-shaped sealing strip effectively departed from sealing surface after venting, reduces the wearing and tearing of motion to special-shaped sealing strip.
(2) the present invention devises the shape of unique special-shaped rubber strip, its first half coordinates with pressure bladder, its Lower Half realizes sealing by pushing distortion, avoids pressure bladder and directly contacts the problem easily causing pressure bladder to wear and tear with rotary flange, reduce user cost.
(3) the present invention ensure that the reliability of sealing by arranging twice gas-flow closure, because double-layer seal produces supporting effect to rotary flange in sealed states, avoids, because motion causes two seals to damage simultaneously, making seal failure.
(4) the present invention is by selecting the material of high tenacity and high strength as Sealing, and the seal groove structure that bamboo product coordinates with it makes Sealing have reliable distortion down in working order, remains sealing, favorable sealing property.
Accompanying drawing explanation
Fig. 1 off working state schematic diagram of the present invention;
The structural representation of shaped rubber bar in Fig. 2 the present invention;
Fig. 3 working state schematic representation of the present invention.
Embodiment
As shown in Figure 1, the present invention includes connecting-tube nozzle 1, two pipelines 2, two pressure bladders 3, pressing plate 4, two shaped rubber bars 5, supports 6.Connecting-tube nozzle 1 is fixed on the sidewall of support 6, and the input end of connecting-tube nozzle 1 is connected with outside pressurized air supplier.Support 6 is fixed on the stationary plane in wind-tunnel, and the bottom of support 6 has two mounting holes, and the rotary flange 7 of wind-tunnel telescopic section is positioned at the below bottom support 6.The end face of rotary flange 7 be sealing surface and and bottom support 6 between have gap.One end of every bar pipeline 2 is connected with the output terminal of connecting-tube nozzle 1, and the other end is connected with the input end of a pressure bladder 3; Pressure bladder 3 is arranged in the mounting hole of support 6.Pressing plate 4 is fixed on bottom support 6, pressing plate 4 has two seal grooves.The first half of each shaped rubber bar 5 is placed in a mounting hole of support 6 by the mode that step is spacing, the lower portion of each shaped rubber bar 5 is in the seal groove of pressing plate 4.When non-tight state, between the Lower Half of shaped rubber bar 5 and seal groove, there is the gap of 1mm.
As shown in Figure 2, the first half of shaped rubber bar 5 has the arc-shaped slot coordinated with pressure bladder 3; The Lower Half of shaped rubber bar 5 is the column structure of curved end.The material of shaped rubber bar 5 is nitrile butadiene rubber, and the Vickers hardness number of pressure bladder 3 is 56.The rubber of this material has high tenacity and high strength, and the gap of the 1mm between that bamboo product coordinates with it and seal groove, makes shaped rubber bar 5 have reliable distortion down in working order, remain sealing, favorable sealing property.
As shown in Figure 3, when sealing is desired, outside pressurized air enters from connecting-tube nozzle 1, enter two pressure bladders 3 through two pipelines 2 simultaneously, pressure bladder 3 is expanded and promotes special-shaped rubber strip to extend bottom pressing plate 4, seal until formed between the Lower Half of shaped rubber bar 5 and rotary flange 7.Pressure bladder 3 does not directly contact with sealing surface, avoids pressure bladder 3 and directly contacts the problem easily causing pressure bladder 3 to wear and tear with rotary flange 7, reduce user cost.When not needing sealing, pressure bladder 3 is outwards exitted by pipeline 2, and special-shaped rubber strip is retracted to pressing plate 4 inside, departs from rotary flange 7, and rotary flange 7 can not be worn and torn special-shaped rubber strip in movement process.In addition, by the two-way gas-flow closure design that two pipelines, 2, two pressure bladders, 3, two seal grooves, two shaped rubber bars 5 are formed, not only ensure that the reliability of sealing, and double-layer seal produces supporting effect to rotary flange 7 in sealed states, avoid, because motion causes two seals to damage simultaneously, making seal failure.
The content be not described in detail in specification of the present invention belongs to the known technology of those skilled in the art.
Claims (3)
1. a wind-tunnel telescopic section Dual-layer air-filled sealed device, comprise connecting-tube nozzle (1), two pipelines (2), two pressure bladders (3), two shaped rubber bars (5), it is characterized in that: also comprise pressing plate (4), support (6); Described connecting-tube nozzle (1) is fixed on the sidewall of support (6), and the input end of connecting-tube nozzle (1) is connected with outside pressurized air supplier; The bottom of support (6) has two mounting holes, and the rotary flange (7) of wind-tunnel telescopic section is positioned at the below of support (6) bottom, has gap between rotary flange (7) end face and support (6) bottom; One end of every bar pipeline (2) is connected with the output terminal of connecting-tube nozzle (1), and the other end is connected with the input end of a pressure bladder (3); Pressure bladder (3) is arranged in the mounting hole of support (6); Pressing plate (4) is fixed on support (6) bottom, pressing plate (4) has two seal grooves; The first half of each shaped rubber bar (5) is placed in a mounting hole of support (6) by the mode that step is spacing, the lower portion of each shaped rubber bar (5) is in the seal groove of pressing plate (4); The first half of shaped rubber bar (5) has the arc-shaped slot coordinated with pressure bladder (3); The Lower Half of shaped rubber bar (5) is the column structure of curved end; When sealing is desired, outside pressurized air enters from connecting-tube nozzle (1), enter two pressure bladders (3) through two pipelines (2) simultaneously, pressure bladder (3) is expanded and promotes special-shaped rubber strip to extend to pressing plate (4) bottom, seal until formed between the Lower Half of shaped rubber bar (5) and rotary flange (7); When not needing sealing, pressure bladder (3) is outwards exitted by pipeline (2), and special-shaped rubber strip is retracted to pressing plate (4) inside, departs from rotary flange (7).
2. a kind of wind-tunnel telescopic section Dual-layer air-filled sealed device according to claim 1, is characterized in that: the Lower Half of described shaped rubber bar (5) has the gap of 1mm when non-tight state and between seal groove.
3. a kind of wind-tunnel telescopic section Dual-layer air-filled sealed device according to claim 1, it is characterized in that: the material of described shaped rubber bar (5) is nitrile butadiene rubber, the Vickers hardness number of pressure bladder (3) is 56.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310692772.1A CN103629362B (en) | 2013-12-17 | 2013-12-17 | A kind of wind-tunnel telescopic section Dual-layer air-filled sealed device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310692772.1A CN103629362B (en) | 2013-12-17 | 2013-12-17 | A kind of wind-tunnel telescopic section Dual-layer air-filled sealed device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103629362A CN103629362A (en) | 2014-03-12 |
| CN103629362B true CN103629362B (en) | 2016-03-30 |
Family
ID=50210702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310692772.1A Expired - Fee Related CN103629362B (en) | 2013-12-17 | 2013-12-17 | A kind of wind-tunnel telescopic section Dual-layer air-filled sealed device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103629362B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502053B (en) * | 2014-10-17 | 2017-04-12 | 北京航天益森风洞工程技术有限公司 | Automatic inflation sealing system used for trisonic wind tunnel |
| CN105697790A (en) * | 2015-12-09 | 2016-06-22 | 中国空气动力研究与发展中心超高速空气动力研究所 | Air inflation axial sealing device used in vacuum environment |
| CN108890849B (en) * | 2018-09-03 | 2023-08-18 | 南通恒嘉环保科技有限公司 | Little limit hold-down equipment of filter core encapsulation frame |
| CN109882592A (en) * | 2019-04-16 | 2019-06-14 | 吉林大学 | Dynamic compensation type seal circle |
| CN110756533B (en) * | 2019-11-29 | 2024-04-26 | 浙江巨化装备工程集团有限公司 | Cleaning device for tank container |
| CN111853240B (en) * | 2020-07-28 | 2023-01-17 | 陕西裕华永赫航宇科技有限公司 | Sealing shroud ring for flexible plate sealing of wind tunnel jet pipe section and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4064582A (en) * | 1975-03-11 | 1977-12-27 | Sando Iron Works Co., Ltd. | Pressure sealing method |
| DE2953078A1 (en) * | 1979-02-23 | 1980-09-04 | Kurt Held | Sliding seal for continuously working laminating machine - has pressure cushion formed behind belt and pressed against material to be laminated |
| FR2523682A1 (en) * | 1982-03-22 | 1983-09-23 | Joint Francais | Pneumatic, inflatable joint for surfaces - has two inflatable, interconnected air chambers in housing between two surfaces |
| CN201281131Y (en) * | 2008-09-02 | 2009-07-29 | 李喜顺 | Inflatable double-layer sealing device |
| CN101614480A (en) * | 2009-07-28 | 2009-12-30 | 中冶北方工程技术有限公司 | Air-cell type profiling sealing device of sintering machine |
| CN201539572U (en) * | 2009-08-13 | 2010-08-04 | 都江堰东翔环保科技有限公司 | Device for conducting contact seal through constant pressure of air sac |
| CN202040335U (en) * | 2011-04-22 | 2011-11-16 | 天津博鑫隆塑管有限公司 | Air bag type air-sealing plug |
| CN203175345U (en) * | 2013-03-28 | 2013-09-04 | 唐山轨道客车有限责任公司 | Sealing device and sealing door |
-
2013
- 2013-12-17 CN CN201310692772.1A patent/CN103629362B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4064582A (en) * | 1975-03-11 | 1977-12-27 | Sando Iron Works Co., Ltd. | Pressure sealing method |
| DE2953078A1 (en) * | 1979-02-23 | 1980-09-04 | Kurt Held | Sliding seal for continuously working laminating machine - has pressure cushion formed behind belt and pressed against material to be laminated |
| FR2523682A1 (en) * | 1982-03-22 | 1983-09-23 | Joint Francais | Pneumatic, inflatable joint for surfaces - has two inflatable, interconnected air chambers in housing between two surfaces |
| CN201281131Y (en) * | 2008-09-02 | 2009-07-29 | 李喜顺 | Inflatable double-layer sealing device |
| CN101614480A (en) * | 2009-07-28 | 2009-12-30 | 中冶北方工程技术有限公司 | Air-cell type profiling sealing device of sintering machine |
| CN201539572U (en) * | 2009-08-13 | 2010-08-04 | 都江堰东翔环保科技有限公司 | Device for conducting contact seal through constant pressure of air sac |
| CN202040335U (en) * | 2011-04-22 | 2011-11-16 | 天津博鑫隆塑管有限公司 | Air bag type air-sealing plug |
| CN203175345U (en) * | 2013-03-28 | 2013-09-04 | 唐山轨道客车有限责任公司 | Sealing device and sealing door |
Non-Patent Citations (2)
| Title |
|---|
| FL-9低速增压风洞密封件的研制;姜玉华等;《特种橡胶制品》;20070228;第28卷(第1期);第37-40页 * |
| 充气密封的非线性有限元分析;孟祥铠等;《润滑与密封》;20070331;第32卷(第3期);第110-112页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103629362A (en) | 2014-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103629362B (en) | A kind of wind-tunnel telescopic section Dual-layer air-filled sealed device | |
| CN105570461A (en) | Airfoil follow-up sealing structure | |
| CN103994225B (en) | A kind of novel sealing strip | |
| CN202528495U (en) | Hydraulic cushion of hydraulic machine | |
| CN204611147U (en) | A kind of piping flange | |
| CN203686141U (en) | Separated floating seal for work arm of heading machine | |
| CN204912450U (en) | Improve punching machine of structure | |
| CN204726155U (en) | A kind of band tyre | |
| CN203906797U (en) | Novel seal strip | |
| CN202165610U (en) | Two-sheet type sealing strip | |
| CN204234576U (en) | Four rib moulds pressed by a kind of blast pipe | |
| CN203810916U (en) | Sintering pallet gap sealing device | |
| CN203156636U (en) | Air press fixture | |
| CN205136586U (en) | Sealed piston assembly of self compensating | |
| CN202228739U (en) | Planar ultra-high pressure self sealing system | |
| CN204977555U (en) | Supplementary pressure source device of mould debugging | |
| CN203348922U (en) | Floating head heat exchanger pipe bunch pressing device | |
| CN201731058U (en) | Pneumatic sealing part with a netlike framework | |
| CN204437263U (en) | Motor-car dust ring | |
| CN203926769U (en) | D type rubber oil sea | |
| CN204059454U (en) | A kind of Novel check valve holder | |
| CN203131017U (en) | Sealed connecting device and compressor comprising sealed connecting device | |
| CN203202045U (en) | Magnetic sealing end cover | |
| CN202356263U (en) | Rubber baffle device of rubber rolling machine | |
| CN201763952U (en) | Screwdown cylinder sealing structure of wiper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160330 Termination date: 20191217 |