CN103982658B - A kind of thin-walled pressure-bearing cylinder combination sealing mechanism - Google Patents
A kind of thin-walled pressure-bearing cylinder combination sealing mechanism Download PDFInfo
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- CN103982658B CN103982658B CN201410233958.5A CN201410233958A CN103982658B CN 103982658 B CN103982658 B CN 103982658B CN 201410233958 A CN201410233958 A CN 201410233958A CN 103982658 B CN103982658 B CN 103982658B
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- spiral shell
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- cover plate
- push pedal
- pressure spiral
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Abstract
The present invention relates to a kind of thin-walled pressure-bearing cylinder combination sealing mechanism, belong to civil rocket bullet field.The sealing mechanism of the present invention, including intrinsic pressure spiral shell, external pressure spiral shell, cover plate, sealing ring, pressure ring；Push pedal is arranged on the rear end shedding unit, sealing ring and pressure ring is put in cannelure at the outer rim of push pedal rear end, cover plate is arranged on push pedal rear end, threaded external pressure spiral shell promotes the outer ring of cover plate, threaded intrinsic pressure spiral shell promotes the center of cover plate, the annular boss making cover plate front outer inserts the cannelure at the outer rim of push pedal rear end uniformly, compresses the sealing ring in this cannelure and occurs axially and radially to deform.The present invention, by applying twice pre-contact pressure to sealing ring, improves the sealing effectiveness of hermetic container, and the risk altered before eliminating traditional structure gas is easy to operate compared with traditional structure, is specially adapted to the end seal of big shedding shell, has important practical value.
Description
Technical field
The present invention relates to a kind of thin-walled pressure-bearing cylinder combination sealing mechanism, belong to civil rocket bullet field.
Background technology
Civilian operation rocket dependence booster will be containing catalyst, extinguishing chemical, agrochemical chemical reagent
Bullet take certain altitude to, rely on the instruction that timing actuator provides, gas generator effect produces high pressure
Gas, expands, and promotes push pedal to move forward in smooth cylinder, until opening nose fairing, will to shed unit complete
Entirely release cylinder.Gas generator cabin section and to shed opening the cabin and sealing between cabin be to come real by push pedal assembly
Existing, form closed containing cavity before gas generator effect, realize after effect efficiently separating.On tradition push pedal assembly
Sealing mechanism structure single, be typically designed to, at push pedal sidewall, one or two O-ring seals are installed,
Sealed by sealing ring between nacelle inwall and push pedal.The shortcoming of this structure is: nacelle inwall is close with push pedal
Seal only has the one direction compress variation of radial direction, and the frictional force at sealing ring is wayward, works as installation
Sealing ring at frictional force less time there is gas along the risk altered before fit clearance；When the sealing ring installed becomes
Meeting increasing friction force when shape amount is bigger, makes assembly operation inconvenience；And there may be stress during due to assembling push pedal
Inequality, can cause the partially sealed weak effect of push pedal circumference.
Summary of the invention
The invention aims to solve the sealing mechanism of civil rocket of traditional structure exist sealing effectiveness poor,
The problems such as at sealing ring frictional force is wayward, it is provided that a kind of thin-walled pressure-bearing cylinder combined sealing structure.
It is an object of the invention to be achieved through the following technical solutions:
A kind of thin-walled pressure-bearing cylinder combination sealing mechanism of the present invention, including intrinsic pressure spiral shell, spring washer, external pressure spiral shell,
Cover plate, push pedal, sealing ring I, sealing ring II, pressure ring, shed cabin；
It is machined with cannelure at the rear end outer rim of push pedal, sheds the rear end inwall processing of the push pedal installation site in cabin
There is female thread,
Cover plate is external diameter and shed the circular slab that cabin internal diameter matches, and the front outer of cover plate adds axially forward
Work has annular boss, and the cannelure external diameter at the internal diameter of this annular boss and push pedal rear end outer rim matches；
The annular element that external pressure spiral shell is endoporus and outer wall is all threaded, the external screw thread of external pressure spiral shell pushes away with shedding cabin
The female thread of plate installation site rear end matches；
Having passage annular element centered by intrinsic pressure spiral shell, the outer wall of intrinsic pressure spiral shell is machined with and external pressure spiral shell inner hole thread
The external screw thread matched；
Cannelure external diameter at the internal diameter of pressure ring and push pedal rear end outer rim matches；
Push pedal is arranged on the rear end shedding unit, is sequentially placed into sealing in the cannelure at the outer rim of push pedal rear end
Circle II, pressure ring, sealing ring I, cover plate is arranged on push pedal rear end, is threaded in by external pressure spiral shell and sheds cabin and push away
The rear end thread segment of plate installation site, makes the annular end face of external pressure spiral shell front end promote the edge of cover plate to travel forward,
The annular boss of cover plate front outer inserts the cannelure at the outer rim of push pedal rear end, and that compresses in this cannelure is close
Seal I and sealing ring II all occurs axially and radially to deform；Intrinsic pressure spiral shell is threaded in the spiral shell at external pressure spiral shell center
Stricture of vagina section, the annular end face of intrinsic pressure spiral shell front end promotes the center of cover plate to travel forward, it is ensured that when cover plate travels forward
Uniform force；Placing elastic washer between annular end face and the cover plate of intrinsic pressure spiral shell front end, the center of intrinsic pressure spiral shell leads to
Pore aligns with the gas generator nozzle of rear end.
Beneficial effect
The present invention, by applying twice pre-contact pressure to sealing ring, improves the sealing effectiveness of hermetic container,
The risk altered before eliminating traditional structure gas, easy to operate compared with traditional structure, it is specially adapted to big open shell
The end seal of body, has important practical value.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of sealing mechanism of the present invention
The intrinsic pressure spiral shell of 1-, 2-spring washer, 3-external pressure spiral shell, 4-cover plate, 5-push pedal, 6-sealing ring I, 7-pressure
Ring, 8-sealing ring II, 9-shed cabin.
Detailed description of the invention
With embodiment, present disclosure is further described below in conjunction with the accompanying drawings.
Embodiment
A kind of thin-walled pressure-bearing cylinder combination sealing mechanism of the present invention, as it is shown in figure 1, include intrinsic pressure spiral shell 1, spring
Packing ring 2, external pressure spiral shell 3, cover plate 4, push pedal 5, sealing ring I6, sealing ring II8, pressure ring 7, shed cabin 9；
It is machined with cannelure at the rear end outer rim of push pedal 5, sheds the rear end inwall of the push pedal installation site in cabin 9
It is machined with female thread,
Cover plate 4 is external diameter and shed the circular slab that cabin 9 internal diameter matches, and the front outer of cover plate 4 is vertically
It is machined with forward annular boss, the cannelure external diameter phase at the internal diameter of this annular boss and push pedal 5 rear end outer rim
Coupling；
The annular element that external pressure spiral shell 3 is endoporus and outer wall is all threaded, the external screw thread of external pressure spiral shell 3 with shed
The female thread of cabin 9 push pedal installation site rear end matches；
Have passage annular element centered by intrinsic pressure spiral shell 1, the outer wall of intrinsic pressure spiral shell 1 be machined with in external pressure spiral shell 3
The external screw thread that hole screw thread matches；
Cannelure external diameter at the internal diameter of pressure ring 7 and push pedal 5 rear end outer rim matches；
Push pedal 5 is arranged on the rear end shedding unit, is sequentially placed in the cannelure at the outer rim of push pedal 5 rear end
Sealing ring II8, pressure ring 7, sealing ring I6, cover plate 4 is arranged on push pedal 5 rear end, by external pressure spiral shell 3 screw thread even
It is connected on the rear end thread segment shedding cabin 9 push pedal installation site, makes the annular end face of external pressure spiral shell 3 front end promote set
The edge of dish 4 travels forward, and the annular boss of cover plate 4 front outer inserts the ring at the outer rim of push pedal 5 rear end
Shape groove, compresses the sealing ring I6 in this cannelure and sealing ring II8 and all occurs axially and radially to deform；Intrinsic pressure
Spiral shell 1 is threaded in the thread segment at external pressure spiral shell 3 center, and the annular end face of intrinsic pressure spiral shell 1 front end promotes cover plate 4
Center travel forward, it is ensured that uniform force when cover plate 4 travels forward；The annular end face of intrinsic pressure spiral shell 1 front end
And place elastic washer 2, the center roof vent of intrinsic pressure spiral shell 1 and the gas generator nozzle of rear end between cover plate 4
Align.
Claims (1)
1. a thin-walled pressure-bearing cylinder combination sealing mechanism, is characterized in that: include intrinsic pressure spiral shell, spring washer, outer
Press spiral shell, cover plate, push pedal, sealing ring I, sealing ring II, pressure ring, shed cabin；
It is machined with cannelure at the rear end outer rim of push pedal, sheds the rear end inwall processing of the push pedal installation site in cabin
There is female thread,
Cover plate is external diameter and shed the circular slab that cabin internal diameter matches, and the front outer of cover plate adds axially forward
Work has annular boss, and the cannelure external diameter at the internal diameter of this annular boss and push pedal rear end outer rim matches；
The annular element that external pressure spiral shell is endoporus and outer wall is all threaded, the external screw thread of external pressure spiral shell pushes away with shedding cabin
The female thread of plate installation site rear end matches；
Having passage annular element centered by intrinsic pressure spiral shell, the outer wall of intrinsic pressure spiral shell is machined with and external pressure spiral shell inner hole thread
The external screw thread matched；
Cannelure external diameter at the internal diameter of pressure ring and push pedal rear end outer rim matches；
Push pedal is arranged on the rear end shedding unit, is sequentially placed into sealing in the cannelure at the outer rim of push pedal rear end
Circle II, pressure ring, sealing ring I, cover plate is arranged on push pedal rear end, is threaded in by external pressure spiral shell and sheds cabin and push away
The rear end thread segment of plate installation site, makes the annular end face of external pressure spiral shell front end promote the edge of cover plate to travel forward,
The annular boss of cover plate front outer inserts the cannelure at the outer rim of push pedal rear end, and that compresses in this cannelure is close
Seal I and sealing ring II all occurs axially and radially to deform；Intrinsic pressure spiral shell is threaded in the spiral shell at external pressure spiral shell center
Stricture of vagina section, the annular end face of intrinsic pressure spiral shell front end promotes the center of cover plate to travel forward, it is ensured that when cover plate travels forward
Uniform force；Placing elastic washer between annular end face and the cover plate of intrinsic pressure spiral shell front end, the center of intrinsic pressure spiral shell leads to
Pore aligns with the gas generator nozzle of rear end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410233958.5A CN103982658B (en) | 2014-05-28 | 2014-05-28 | A kind of thin-walled pressure-bearing cylinder combination sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410233958.5A CN103982658B (en) | 2014-05-28 | 2014-05-28 | A kind of thin-walled pressure-bearing cylinder combination sealing mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103982658A CN103982658A (en) | 2014-08-13 |
| CN103982658B true CN103982658B (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410233958.5A Active CN103982658B (en) | 2014-05-28 | 2014-05-28 | A kind of thin-walled pressure-bearing cylinder combination sealing mechanism |
Country Status (1)
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| CN (1) | CN103982658B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402385B (en) * | 2016-10-18 | 2018-05-18 | 北京特种机械研究所 | For annular emission cylinder without flange pressure bearing and seal connection structure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2695717B1 (en) * | 1992-09-16 | 1994-11-25 | Saint Louis Inst | Shoe for accelerator projectile by ramjet effect and projectile equipped with such a shoe. |
| US20090308274A1 (en) * | 2008-06-11 | 2009-12-17 | Lockheed Martin Corporation | Integrated Pusher Plate for a Canister- or Gun-Launched Projectile and System Incorporating Same |
| CN101549194B (en) * | 2009-05-27 | 2013-09-25 | 贵州航天风华精密设备有限公司 | Bullet of forest fire-fighting bomb of Vehicle-mounted remote projection |
| US9073527B2 (en) * | 2011-03-31 | 2015-07-07 | Haldex Brake Corporation | Smooth bore dynamic center seal for spring brake actuator |
| CN202822561U (en) * | 2012-10-24 | 2013-03-27 | 晋西工业集团有限责任公司 | Push plate assembly for fire extinguishing shrapnel |
| CN203847695U (en) * | 2014-05-28 | 2014-09-24 | 晋西工业集团有限责任公司 | Thin-wall pressure bearing cylinder combined sealing mechanism |
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2014
- 2014-05-28 CN CN201410233958.5A patent/CN103982658B/en active Active
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| CN103982658A (en) | 2014-08-13 |
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