CN103982658A - Thin-wall pressure-bearing cylinder combined seal mechanism - Google Patents
Thin-wall pressure-bearing cylinder combined seal mechanism Download PDFInfo
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- CN103982658A CN103982658A CN201410233958.5A CN201410233958A CN103982658A CN 103982658 A CN103982658 A CN 103982658A CN 201410233958 A CN201410233958 A CN 201410233958A CN 103982658 A CN103982658 A CN 103982658A
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- spiral shell
- rear end
- push pedal
- pressure spiral
- cover plate
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Abstract
The invention relates to a thin-wall pressure-bearing cylinder combined seal mechanism and belongs to the field of civil rocket projectiles. The seal mechanism comprises an inner compression screw, an outer compression screw, a sleeve disc, a seal ring and a compression ring. A push plate is mounted at the rear end of a casting unit, the seal ring and the compression ring are disposed in a circular groove in the outer edge of the rear end of the push plate, the sleeve disc is mounted at the rear end of the push plate, the outer compression screw in threaded connection pushes the outer ring of the sleeve disc, and the inner compression screw in threaded connection pushes the center of the sleeve disc, so that a circular boss at the outer edge of the front end of the sleeve disc is inserted in the circular groove in the outer edge of the rear end of the push plate uniformly to compress the seal ring in the circular groove to be deformed axially and radially. According to the mechanism, twice pre-contact pressure is applied to the seal ring, so that the closed container seal effect is improved, the risk of gas fleeing of traditional structures is eliminated, and compared with the traditional structural operation, the seal mechanism is convenient to operate, particularly suitable for end sealing of large-opening casings and provided with important practical values.
Description
Technical field
The present invention relates to a kind of thin-walled pressure-bearing cylinder combination seal mechanism, belong to civil rocket bullet field.
Background technique
Civilian operation rocket relies on booster to take the bullet that contains catalyzer, extinguishing agent, agrochemical chemical reagent to certain altitude, the instruction that relies on timing actuator to provide, gas generator effect produces pressurized gas, expand, promote push pedal and move forward in smooth cylindrical shell, will shed unit and release cylindrical shell completely until open nose fairing.Gas generator cabin section and to shed opening the cabin and sealing between cabin be to realize by push pedal assembly, forms closed containing cavity before gas generator effect, after effect, realize effectively and separating.Sealing mechanism structure on tradition push pedal assembly is single, is typically designed at push pedal sidewall one or two O-ring seals are installed, and between cabin body inwall and push pedal, seals by seal ring.The shortcoming of this structure is: the seal ring of cabin body inwall and push pedal only has the one direction compress variation of radial direction, and the frictional force at seal ring place is wayward, when the seal ring place frictional force of installing hour exists gas along the risk of altering before matching gap; In the time that the sealed ring deformation amount of installing is larger, meeting increasing friction force, makes assembly operation inconvenience; And during due to assembling push pedal, may there is unbalance stress, can cause the circumferential partially sealed weak effect of push pedal.
Summary of the invention
There is the problems such as sealing effect is poor, seal ring place frictional force is wayward in the sealing mechanism that the object of the invention is the civil rocket that will solve conventional construction, a kind of thin-walled pressure-bearing cylinder combined sealing structure is provided.
The object of the invention is to be achieved through the following technical solutions:
A kind of thin-walled pressure-bearing cylinder combination seal of the present invention mechanism, comprises interior pressure spiral shell, spring washer, external pressure spiral shell, cover plate, push pedal, seal ring, pressure ring, sheds cabin;
The outer rim place, rear end of push pedal is processed with circular groove, and the rear end inwall of shedding push pedal mounting point, cabin is processed with internal thread,
Cover plate is external diameter and shed the circular plate that cabin internal diameter matches, and the front outer of cover plate is processed with forward annular boss vertically, and the circular groove external diameter at the internal diameter of this annular boss and outer rim place, push pedal rear end matches;
External pressure spiral shell is that endoporus and outer wall are all processed threaded ring part, and the outside thread of external pressure spiral shell matches with the internal thread of shedding rear end, push pedal mounting point, cabin;
Centered by interior pressure spiral shell, have vent ring part, the outer wall of interior pressure spiral shell is processed with the outside thread matching with external pressure spiral shell inner hole thread;
The circular groove external diameter at the internal diameter of pressure ring and outer rim place, push pedal rear end matches;
Push pedal is arranged on the rear end of shedding unit, in the circular groove at outer rim place, push pedal rear end, put into successively seal ring II, pressure ring, seal ring I, cover plate is arranged on push pedal rear end, external pressure spiral shell is threaded in to the rear end thread section of shedding push pedal mounting point, cabin, the edge of the annular end face promotion cover plate of external pressure spiral shell front end is travelled forward, the annular boss of cover plate front outer inserts the circular groove at outer rim place, push pedal rear end, and the seal ring compressing in this circular groove occurs axially and radial deformation; Interior pressure spiral shell is threaded in the thread section at external pressure spiral shell center, and the center that the annular end face of interior pressure spiral shell front end promotes cover plate travels forward, and ensures when cover plate travels forward stressed even; Between the annular end face of interior pressure spiral shell front end and cover plate, place elastic washer, the gas generator nozzle of the center roof vent of interior pressure spiral shell and rear end aligns.
Beneficial effect
The present invention is by applying pre-contact twice to seal ring, improve the sealing effect of seal container, eliminated the risk of altering before conventional construction gas, easy to operate compared with conventional construction, especially be adapted to the end part seal of large shedding shell, there is important use value.
Brief description of the drawings
Fig. 1 is the schematic diagram of sealing mechanism of the present invention
In 1-, press spiral shell, 2-spring washer, 3-external pressure spiral shell, 4-cover plate, 5-push pedal, 6-seal ring I, 7-pressure ring, 8-seal ring II, 9-to shed cabin.
Embodiment
Below in conjunction with drawings and Examples, content of the present invention is further described.
Embodiment
A kind of thin-walled pressure-bearing cylinder combination seal of the present invention mechanism, as shown in Figure 1, comprises interior pressure spiral shell 1, spring washer 2, external pressure spiral shell 3, cover plate 4, push pedal 5, seal ring, pressure ring 7, sheds cabin 9;
The outer rim place, rear end of push pedal 5 is processed with circular groove, and the rear end inwall of shedding 9 push pedal mounting points, cabin is processed with internal thread,
Cover plate 4 is for external diameter and shed the circular plate that cabin 9 internal diameters match, and the front outer of cover plate 4 is processed with forward annular boss vertically, and the circular groove external diameter at the internal diameter of this annular boss and push pedal 5 outer rim places, rear end matches;
External pressure spiral shell 3 is all processed threaded ring part for endoporus and outer wall, and the outside thread of external pressure spiral shell 3 matches with the internal thread of shedding 9 rear ends, push pedal mounting point, cabin;
Centered by interior pressure spiral shell 1, have vent ring part, the outer wall of interior pressure spiral shell 1 is processed with the outside thread matching with external pressure spiral shell 3 inner hole threads;
The circular groove external diameter at the internal diameter of pressure ring 7 and push pedal 5 outer rim places, rear end matches;
Push pedal 5 is arranged on the rear end of shedding unit, in the circular groove at push pedal 5 outer rim places, rear end, put into successively seal ring II8, pressure ring 7, seal ring I6, cover plate 4 is arranged on push pedal 5 rear ends, external pressure spiral shell 3 is threaded in to the rear end thread section of shedding 9 push pedal mounting points, cabin, the edge of the annular end face promotion cover plate 4 of external pressure spiral shell 3 front ends is travelled forward, the annular boss of cover plate 4 front outers inserts the circular groove at push pedal 5 outer rim places, rear end, and the seal ring compressing in this circular groove occurs axially and radial deformation; Interior pressure spiral shell 1 is threaded in the thread section at external pressure spiral shell 3 centers, and the center that the annular end face of interior pressure spiral shell 1 front end promotes cover plate 4 travels forward, and ensures when cover plate 4 travels forward stressed even; Between the annular end face of interior pressure spiral shell 1 front end and cover plate 4, place elastic washer 2, the gas generator nozzle of the center roof vent of interior pressure spiral shell 1 and rear end aligns.
Claims (1)
1. a thin-walled pressure-bearing cylinder combination seal mechanism, is characterized in that: comprise interior pressure spiral shell, spring washer, external pressure spiral shell, cover plate, push pedal, seal ring, pressure ring, shed cabin;
The outer rim place, rear end of push pedal is processed with circular groove, and the rear end inwall of shedding push pedal mounting point, cabin is processed with internal thread,
Cover plate is external diameter and shed the circular plate that cabin internal diameter matches, and the front outer of cover plate is processed with forward annular boss vertically, and the circular groove external diameter at the internal diameter of this annular boss and outer rim place, push pedal rear end matches;
External pressure spiral shell is that endoporus and outer wall are all processed threaded ring part, and the outside thread of external pressure spiral shell matches with the internal thread of shedding rear end, push pedal mounting point, cabin;
Centered by interior pressure spiral shell, have vent ring part, the outer wall of interior pressure spiral shell is processed with the outside thread matching with external pressure spiral shell inner hole thread;
The circular groove external diameter at the internal diameter of pressure ring and outer rim place, push pedal rear end matches;
Push pedal is arranged on the rear end of shedding unit, in the circular groove at outer rim place, push pedal rear end, put into successively seal ring II, pressure ring, seal ring I, cover plate is arranged on push pedal rear end, external pressure spiral shell is threaded in to the rear end thread section of shedding push pedal mounting point, cabin, the edge of the annular end face promotion cover plate of external pressure spiral shell front end is travelled forward, the annular boss of cover plate front outer inserts the circular groove at outer rim place, push pedal rear end, and the seal ring compressing in this circular groove occurs axially and radial deformation; Interior pressure spiral shell is threaded in the thread section at external pressure spiral shell center, and the center that the annular end face of interior pressure spiral shell front end promotes cover plate travels forward, and ensures when cover plate travels forward stressed even; Between the annular end face of interior pressure spiral shell front end and cover plate, place elastic washer, the gas generator nozzle of the center roof vent of interior pressure spiral shell and rear end aligns.
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 |
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| 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 true CN103982658A (en) | 2014-08-13 |
| CN103982658B CN103982658B (en) | 2016-08-24 |
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| CN201410233958.5A Active CN103982658B (en) | 2014-05-28 | 2014-05-28 | A kind of thin-walled pressure-bearing cylinder combination sealing mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402385A (en) * | 2016-10-18 | 2017-02-15 | 北京特种机械研究所 | Flangeless pressure-bearing and sealing connecting structure used for circular launch canister |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4331395A1 (en) * | 1992-09-16 | 1994-03-17 | Deutsch Franz Forsch Inst | Drive reflector for projectile for RAM accelerator - comprises projectile accelerated in accelerator comprising tubular pre-accelerator, followed by accelerator tubes based on RAM effect. |
| CN101549194A (en) * | 2009-05-27 | 2009-10-07 | 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 |
| 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 |
| CN102734466A (en) * | 2011-03-31 | 2012-10-17 | 哈尔德克斯制动器公司 | 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 |
-
2014
- 2014-05-28 CN CN201410233958.5A patent/CN103982658B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4331395A1 (en) * | 1992-09-16 | 1994-03-17 | Deutsch Franz Forsch Inst | Drive reflector for projectile for RAM accelerator - comprises projectile accelerated in accelerator comprising tubular pre-accelerator, followed by accelerator tubes based on RAM effect. |
| 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 |
| CN101549194A (en) * | 2009-05-27 | 2009-10-07 | 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 |
| CN102734466A (en) * | 2011-03-31 | 2012-10-17 | 哈尔德克斯制动器公司 | 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402385A (en) * | 2016-10-18 | 2017-02-15 | 北京特种机械研究所 | Flangeless pressure-bearing and sealing connecting structure used for circular launch canister |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103982658B (en) | 2016-08-24 |
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