CN105466673A - External pressure loading air bag - Google Patents
External pressure loading air bag Download PDFInfo
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- CN105466673A CN105466673A CN201410465056.4A CN201410465056A CN105466673A CN 105466673 A CN105466673 A CN 105466673A CN 201410465056 A CN201410465056 A CN 201410465056A CN 105466673 A CN105466673 A CN 105466673A
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- air bag
- external pressure
- band
- rib
- pressure loading
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Abstract
The invention relates to the technical field of aerospace, specifically to an external pressure loading air bag. The air bag aims to be made of a wear-proof material, save cost and greatly reduce test preparing time. The air bag is characterized by comprising an air bag unit (1), a band (2) and a rib (3). The air bag unit (1) sleeves the outer surface of a test element (5). The band (2) sleeves the outer wall of the air bag unit (1). The inner side of the rib (3) is fixedly connected to the outer wall of the air bag unit (1), and the outer side of the rib (3) is fixedly connected to the inner side of the band (2). In a comparison tests with the conventional external pressure loading method, an external pressure cylinder and the new air bag are used for loading the same cylinder section to the external pressure load of 45KPa, and the key point stress values are measured; a plurality of test measuring results are compared and used for working out a matched curve, the measuring structure has good repeatability and the new air bag achieves the loading effects of the conventional external pressure cylinder.
Description
Technical field
The present invention relates to field of aerospace technology, be specifically related to a kind of external pressure loading air bag.
Background technology
The structure member that rocket is subject to outer compressive load is a lot, as radome fairing, instrument room, inter-tank section, inter-stage section, corrugated tube etc.These parts all need to test in development, design and production run.
External pressure test is exactly with gas or liquid for punching press medium, simulated rocket structure under certain duty, the design conditions when external pressure of bearing reaches maximum.As rocket fly in atmospheric envelope time, instrument room and each truncated cone shell of head bear aerodynamic force formed external pressure; The rocket body external pressure that the borehole pressure pulse that liquid rocket produces when silo intrinsic motivation is lighted a fire causes; The external pressure etc. that the combustion gas that secondary engine ignition sprays caused the one-level casing front end.
Traditional external pressure implementation method is, design processing outer pressure cylinder, steel cylinder is welded by upper and lower, garden ring flat-plate and barrel shell, internal diameter and rubber tube with upper and lower flange identical with testpieces external diameter is put in cylinder, use, upper and lower for rubber tube flange compresses with on steel cylinder by lower pressure ring, and be bolted connection, make the space that between rubber tube and steel drum, formation one is closed.In bucket, air pressure is loaded to realize loading outer compressive load to testpieces by ozzle.Visible traditional external pressure implementation method is comparatively loaded down with trivial details, and cost is higher, needs steel and the natural rubber of at substantial.
Summary of the invention
The object of the invention is solution when carrying out external pressure test, traditional external pressure implementation method is comparatively loaded down with trivial details, the technical matters that cost is high, provides a kind of high-abrasive material that adopts and makes, can be cost-saving, and greatly can shorten the external pressure loading air bag of test setup time.
The present invention is achieved in that
A kind of external pressure loading air bag, comprises air bag, band and rib; Air sac cover is contained on the outside surface of testpieces; Band is sleeved on the outer wall of air bag; Be fixedly connected with gasbag ektexine inside rib, outside is fixedly connected with the inner side of band.
Air bag entirety as above is the cylindrical of hollow, and xsect is two annulars, and the thickness of outer annular is greater than the thickness of inner side annulus; The height of air bag and the matched of testpieces, the internal diameter of air bag is greater than the external diameter of testpieces; The outer wall of air bag is provided with interface.
Band entirety as above is rope form, is wrapped in the outside of air bag in the horizontal direction; Band is more than or equal to two, is uniformly distributed along gasbag ektexine short transverse.
Band as above has nine.
Rib entirety as above is cuboid, is vertically fixed on the outer wall of air bag; Rib is more than or equal to two, is uniformly distributed along bag width direction.
Rib as above has 32.
Air bag as above adopts PVC material to make, and band adopts composite fibre materials to make, and rib adopts channel-section steel to make.
The invention has the beneficial effects as follows:
The air bag that the present invention adopts high-abrasive material to make, gasbag ektexine is set with band, is fixedly connected with between band and gasbag ektexine by rib.The outer pressure cylinder loading method of air bag and tradition is compared demonstration test, with new air bag, the outer compressive load of 45KPa is loaded on to mutually same cylinder section with outer pressure cylinder respectively, and measures key point stress value.Contrast the measurement result matched curve tested several times, measure structure repeatability very well, new air bag reaches the loading effect of the outer pressure cylinder of tradition.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of a kind of external pressure loading air bag of the present invention;
Fig. 2 is a kind of external pressure loading air bag of the present invention screw-down torque and band tensile relationship curve when carrying out external pressure test.
Wherein: 1. air bag, 2. band, 3. rib, 4. interface, 5. testpieces.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described further.
As shown in Figure 1, a kind of external pressure loading air bag, comprises air bag 1, band 2 and rib 3.Air bag 1 is sleeved on the outside surface of testpieces 5, for loading external pressure to testpieces 5.Band 2 is sleeved on the outer wall of air bag 1, for keeping the profile of air bag 1, and ensures the intensity of air bag 1 outer wall.Be fixedly connected with air bag 1 outer wall inside rib 3, outside is fixedly connected with the inner side of band 2, and rib 3, for limiting the displacement of band 2, prevents air bag about 1 two ends from turnup occurring.
Air bag 1 entirety is the cylindrical of hollow, and xsect is two annulars, and the thickness of outer annular is greater than the thickness of inner side annulus, and the inwall inflating rear gasbag 1 is contacted with the intimate of testpieces 5.Enclosure space in the middle of inside and outside two annulus of air bag 1 is used for blanketing gas.The height of air bag 1 and the matched of testpieces 5, the internal diameter of air bag 1 is greater than the external diameter of testpieces 5.The outer wall of air bag 1 is provided with interface 4, for realizing inflation and the venting of air bag 1.Band 2 entirety is rope form, is wrapped in the outside of air bag 1 in the horizontal direction.Band 2 is more than or equal to two, is uniformly distributed along air bag 1 outer wall short transverse.In the present embodiment, band 2 has nine.
Rib 3 entirety is cuboid, is vertically fixed on the outer wall of air bag 1.Rib 3 is more than or equal to two, is uniformly distributed along air bag 1 Width.In the present embodiment, rib 3 has 32.
Air bag 1 adopts PVC material to make, and band 2 adopts composite fibre materials to make, and rib 3 adopts channel-section steel to make, and interface 4 adopts the inflation/deflation Interface realization of existing aerating device, is commercially available.
When carrying out external pressure test, gas-loaded device adds gas carrier by interface 4 pairs of air bags 1, air bag 1 is expanded completely, band 2 limits the overexpansion of air bag 1, the profile of air bag 1 is kept, and rib 3 limits the upper and lower displacement of band 2, and the inner side of air bag 1 and the intimate of testpieces 5 are fitted, realize the transmission of load, complete the applying to the outer compressive load of testpieces 5.
The air bag 1 that the present invention adopts high-abrasive material to make, gasbag ektexine is set with band 2, is fixedly connected with between band 2 and air bag 1 outer wall by rib 3.The outer pressure cylinder loading method of air bag and tradition is compared demonstration test, with new air bag, the outer compressive load of 45KPa is loaded on to mutually same cylinder section with outer pressure cylinder respectively, and measures key point stress value.Contrast the measurement result matched curve tested several times, measure structure repeatability very well, new air bag reaches the loading effect of the outer pressure cylinder of tradition.
Claims (7)
1. an external pressure loading air bag, is characterized in that: it comprises air bag (1), band (2) and rib (3); Air bag (1) is sleeved on the outside surface of testpieces (5); Band (2) is sleeved on the outer wall of air bag (1); Rib (3) inner side is fixedly connected with air bag (1) outer wall, and outside is fixedly connected with the inner side of band (2).
2. external pressure loading air bag according to claim 1, is characterized in that: described air bag (1) entirety is the cylindrical of hollow, and xsect is two annulars, and the thickness of outer annular is greater than the thickness of inner side annulus; The height of air bag (1) and the matched of testpieces (5), the internal diameter of air bag (1) is greater than the external diameter of testpieces (5); The outer wall of air bag (1) is provided with interface (4).
3. external pressure loading air bag according to claim 1, is characterized in that: described band (2) entirety is rope form, is wrapped in the outside of air bag (1) in the horizontal direction; Band (2) is more than or equal to two, is uniformly distributed along air bag (1) outer wall short transverse.
4. external pressure loading air bag according to claim 3, is characterized in that: described band (2) has nine.
5. external pressure loading air bag according to claim 1, is characterized in that: described rib (3) entirety is cuboid, is vertically fixed on the outer wall of air bag (1); Rib (3) is more than or equal to two, is uniformly distributed along air bag (1) Width.
6. external pressure loading air bag according to claim 5, is characterized in that: described rib (3) has 32.
7. external pressure loading air bag according to claim 1, is characterized in that: described air bag (1) adopts PVC material to make, and band (2) adopts composite fibre materials to make, and rib (3) adopts channel-section steel to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410465056.4A CN105466673A (en) | 2014-09-12 | 2014-09-12 | External pressure loading air bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410465056.4A CN105466673A (en) | 2014-09-12 | 2014-09-12 | External pressure loading air bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105466673A true CN105466673A (en) | 2016-04-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410465056.4A Pending CN105466673A (en) | 2014-09-12 | 2014-09-12 | External pressure loading air bag |
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| CN (1) | CN105466673A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109323928A (en) * | 2018-11-30 | 2019-02-12 | 上海航天精密机械研究所 | It is segmented external pressure test device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2414278Y (en) * | 1999-11-30 | 2001-01-10 | 陈宝军 | Novel air sac for pipeline |
| CN101059409A (en) * | 2006-10-12 | 2007-10-24 | 第二炮兵工程设计研究院 | Enwound composite high pressure static loading test device |
| CN202471115U (en) * | 2011-12-31 | 2012-10-03 | 上海航天精密机械研究所 | Static trial universal supporting apparatus for different types of cabin bodies |
| CN103453247A (en) * | 2013-09-04 | 2013-12-18 | 中国船舶重工集团公司第七一〇研究所 | Inflating type pipeline connecting clamp hoop |
| CN204085868U (en) * | 2014-09-12 | 2015-01-07 | 北京强度环境研究所 | A kind of external pressure loading air bag |
-
2014
- 2014-09-12 CN CN201410465056.4A patent/CN105466673A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2414278Y (en) * | 1999-11-30 | 2001-01-10 | 陈宝军 | Novel air sac for pipeline |
| CN101059409A (en) * | 2006-10-12 | 2007-10-24 | 第二炮兵工程设计研究院 | Enwound composite high pressure static loading test device |
| CN202471115U (en) * | 2011-12-31 | 2012-10-03 | 上海航天精密机械研究所 | Static trial universal supporting apparatus for different types of cabin bodies |
| CN103453247A (en) * | 2013-09-04 | 2013-12-18 | 中国船舶重工集团公司第七一〇研究所 | Inflating type pipeline connecting clamp hoop |
| CN204085868U (en) * | 2014-09-12 | 2015-01-07 | 北京强度环境研究所 | A kind of external pressure loading air bag |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109323928A (en) * | 2018-11-30 | 2019-02-12 | 上海航天精密机械研究所 | It is segmented external pressure test device |
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Application publication date: 20160406 |
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| RJ01 | Rejection of invention patent application after publication |