CN104842479A - Rubber airbag for manufacturing heat insulating layer of engine - Google Patents
Rubber airbag for manufacturing heat insulating layer of engine Download PDFInfo
- Publication number
- CN104842479A CN104842479A CN201510246524.3A CN201510246524A CN104842479A CN 104842479 A CN104842479 A CN 104842479A CN 201510246524 A CN201510246524 A CN 201510246524A CN 104842479 A CN104842479 A CN 104842479A
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- insulation layer
- heat insulation
- engine heat
- end socket
- engine
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Abstract
The invention relates to a rubber airbag for manufacturing a heat insulating layer of an engine and belongs to the technical field of airbag manufacturing. The rubber airbag for manufacturing the heat insulating layer of the engine comprises a bag body and seal heads at the two ends thereof, wherein the thickness of the bag body is 2 to 4mm; the bag body and the seal heads are integrally formed; one seal head is provided with an inflating device; the inflating device comprises a T-shaped air nozzle, and the T-shaped air nozzle is fixed on the seal head through a pressing plate and a nut; threads are processed on the T-shaped air nozzle, and the threads are matched with the nut. During use, the pressure loss of the rubber airbag is smaller than 0.1MPa and the profile quality and surface smoothness of the heat insulating layer are remarkably improved; since no separating agent is used, interface defects caused by interface pollution are fundamentally eliminated and the product quality is obviously improved; since the difference between material systems of the airbag and the heat insulating layer is greater and the airbag is naturally separated from the heat insulating layer in the air extraction process during demolding, the labor intensity of an operator is reduced and the rubber airbag can be used at 150 DEG C for a long time; the goal of guaranteeing the profile of the heat insulating layer and the product quality of the engine can be achieved.
Description
Technical field
The invention belongs to solid propellant rocket heat insulation layer manufacturing technology field, be specifically related to a kind of rubber pneumatic bag manufactured for engine heat insulation layer.
Background technology
The profile more complicated of solid propellant rocket heat insulation layer, comprise cylinder section, front head and rear head, front head and rear head are spheroid, the thickness of cylinder section is also inconsistent, general shaping many employings are at high temperature by the process of gasbag pressurizes sulfuration, and the profile quality of air bag determines the uniformity of air bag transmission of pressure, the pressure differential at each position, to flow direction and the liquidity of heat insulation layer raw material be caused, finally cause the partial deviations of heat insulation layer profile.The general air bag product all adopting butyl rubber material, this material ductility can be poor, middle pressure loss is used to be greater than 0.4MPa, poor with the goodness of fit of heat insulation layer profile, often occur the situation that heat insulation layer is done over again because of profile problems have also appeared major quality fault, cause engine to be scrapped, economic loss is huge, and the access times limit of air bag is 3 times.
Summary of the invention
The invention provides a kind of rubber pneumatic bag manufactured for engine heat insulation layer, in order to improve the goodness of fit with heat insulation layer profile, reach the object guaranteeing heat insulation layer profile and engine product quality.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of rubber pneumatic bag manufactured for engine heat insulation layer, comprise the end socket at utricule and two ends thereof, thickness is at 2-4mm, utricule and end socket one-body molded, one of them end socket is provided with aerating device, and aerating device comprises T-shaped valve, and T-shaped valve is fixed on end socket by pressing plate and nut.
Described T-shaped valve is processed with screw thread, and this screw thread and nut match.
Described utricule is cylindrical shape, and its external diameter is 99.5% of engine heat insulation layer cylinder section minimum diameter to be formed.
Described end socket be the part of spheroid, the major radius of this spheroid equals utricule radius, and short radius is that the short radius of pending motor body end socket deducts this heading machine mouth heat insulation layer thickness.
The total length of described air bag is 99.8% of heat insulation layer spacing, namely between engine heat insulation layer sealing two ends spacing 99.8%
The upper deviation of described utricule external diameter is zero, and lower deviation is 1% of engine heat insulation layer cylinder section minimum diameter.
The deviation of the total length of described air bag is ± 0.2%.
Described utricule and end socket all adopt silicon rubber material to make; Compare traditional butyl material density lighter, flexible, ageing properties is good.
After adopting Silicon rubber inflatable bag, the Silicon rubber inflatable bag in use pressure loss can be less than 0.1MPa; Accurate control molding surface size, can make air bag and heat insulation layer profile coincide further, and each position heat insulation layer pressure is consistent, guarantee that heat insulation layer profile quality and apparent smoothness are significantly improved, meanwhile, guarantee that heat insulation layer sulfuration is complete, obtain good mechanical property.Due to without the need to using interleaving agent, inherently eliminate the boundary defect because interface pollution causes, product quality promotes obviously, air bag and heat insulation layer material system differ greatly, during the demoulding, air bag nature in pumping process is separated with heat insulation layer, reduces the labour intensity of operator, can use at 150 DEG C for a long time, air bag access times at high temperature reach 15 times, greatly reduce the production cost of heat insulation layer.Product have passed test examination, and the heat insulation layer stopped because air bag problems causes is done over again and scraps situation, and quality cost obviously declines, and manufacturing schedule obtains effective guarantee.The technology of the present invention has been applied in more than 20 engine products at present.
Accompanying drawing explanation
Fig. 1 is section of structure of the present invention, and wherein 1 is utricule, and 2 is end socket, and 3 is aerating device, and 31 is T-shaped valve, and 32 is pressing plate, and 33 is nut.
Fig. 2 is the structural representation of engine heat insulation layer, and wherein 4 is the end socket of motor body, and 5 is the cylinder section of motor body, 6 is engine heat insulation layer cylinder section, and 7 is engine heat insulation layer cylinder section minimum diameter place, and 8 is head insulation, 9 is heading machine mouth heat insulation layer, and 10 is heat insulation layer spacing.
Detailed description of the invention
Further illustrate the present invention below in conjunction with embodiment, but the scope of protection of present invention is not limited to the scope of embodiment statement.
Embodiment 1:
A kind of rubber pneumatic bag manufactured for engine heat insulation layer, as shown in Figure 1, comprise the end socket 2 at utricule 1 and two ends thereof, thickness is at 2mm, utricule 1 and end socket 2 one-body molded, one of them end socket is provided with aerating device 3, and aerating device comprises T-shaped valve 31, and T-shaped valve 31 is fixed on end socket by pressing plate 32 and nut 33; And T-shaped valve 31 is processed with screw thread, this screw thread and nut 33 match.
Embodiment 2:
A kind of rubber pneumatic bag manufactured for engine heat insulation layer, as shown in Figures 1 and 2, comprise the end socket 2 at utricule 1 and two ends thereof, thickness is at 2mm, utricule 1 and end socket 2 one-body molded, one of them end socket is provided with aerating device 3, and aerating device comprises T-shaped valve 31, and T-shaped valve 31 is fixed on end socket by pressing plate 32 and nut 33; And T-shaped valve 31 is processed with screw thread, this screw thread and nut 33 match.
Wherein, described utricule is cylindrical shape, and its external diameter is 99.5% of engine heat insulation layer cylinder section minimum diameter to be formed.
Described end socket be the part of spheroid, the major radius of this spheroid equals utricule radius, and short radius is that the short radius of pending motor body end socket deducts this heading machine mouth heat insulation layer thickness.
The total length of described air bag is 99.8% of heat insulation layer spacing, namely between engine heat insulation layer sealing two ends spacing 99.8%.
The upper deviation of described utricule external diameter is zero, and lower deviation is 1% of engine heat insulation layer cylinder section minimum diameter.
The deviation of the total length of described air bag is ± 0.2%.
Described utricule 1 and end socket 2 all adopt silicon rubber material to make.
After adopting this air bag, engine heat insulation layer profile quality and apparent smoothness are significantly improved, heat insulation layer sulfuration is complete, obtain good mechanical property, during the demoulding, air bag nature in pumping process is separated with heat insulation layer, reduces the labour intensity of operator, can use at 150 DEG C for a long time, this air bag access times at high temperature reach 15 times, greatly reduce the production cost of heat insulation layer.
Claims (8)
1. the rubber pneumatic bag manufactured for engine heat insulation layer, it is characterized in that: the end socket (2) comprising utricule (1) and two ends thereof, thickness is at 2-4mm, utricule (1) and end socket (2) one-body molded, one of them end socket is provided with aerating device (3), aerating device comprises T-shaped valve (31), and T-shaped valve (31) is fixed on end socket by pressing plate (32) and nut (33).
2. the rubber pneumatic bag manufactured for engine heat insulation layer according to claim 1, it is characterized in that: described T-shaped valve (31) is processed with screw thread, this screw thread and nut (33) match.
3. the rubber pneumatic bag manufactured for engine heat insulation layer according to claim 1, is characterized in that: described utricule is cylindrical shape, and its external diameter is 99.5% of engine heat insulation layer cylinder section minimum diameter to be formed.
4. the rubber pneumatic bag manufactured for engine heat insulation layer according to claim 1, it is characterized in that: the part for spheroid of described end socket, the major radius of this spheroid equals utricule radius, and short radius is that the short radius of pending motor body end socket deducts this heading machine mouth heat insulation layer thickness.
5. according to claim 1 for engine heat insulation layer manufacture rubber pneumatic bag, it is characterized in that: the total length of described air bag is 99.8% of heat insulation layer spacing, namely between engine heat insulation layer sealing two ends spacing 99.8%.
6. the rubber pneumatic bag manufactured for engine heat insulation layer according to claim 3, it is characterized in that: the upper deviation of described utricule external diameter is zero, lower deviation is 1% of engine heat insulation layer cylinder section minimum diameter.
7. the rubber pneumatic bag manufactured for engine heat insulation layer according to claim 5, is characterized in that: the deviation of the total length of described air bag is ± 0.2%.
8. the rubber pneumatic bag manufactured for engine heat insulation layer according to claim 1-7 any one, is characterized in that: described utricule (1) and end socket (2) all adopt silicon rubber material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510246524.3A CN104842479A (en) | 2015-05-15 | 2015-05-15 | Rubber airbag for manufacturing heat insulating layer of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510246524.3A CN104842479A (en) | 2015-05-15 | 2015-05-15 | Rubber airbag for manufacturing heat insulating layer of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104842479A true CN104842479A (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510246524.3A Pending CN104842479A (en) | 2015-05-15 | 2015-05-15 | Rubber airbag for manufacturing heat insulating layer of engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN104842479A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109648887A (en) * | 2018-12-25 | 2019-04-19 | 内蒙古航天红峡化工有限公司 | A kind of solid propellant rocket half air bag cure under pressure heat insulation layer device and method |
| CN113818972A (en) * | 2021-05-25 | 2021-12-21 | 西安英利科电气科技有限公司 | Bonding structure and method for thermal insulation layer of solid rocket combustion chamber |
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| CN2430272Y (en) * | 2000-04-28 | 2001-05-16 | 王云涛 | Inflating rubber core mould |
| CN1865047A (en) * | 2005-05-18 | 2006-11-22 | 丰田合成株式会社 | Airbag device |
| CN102285118A (en) * | 2011-04-21 | 2011-12-21 | 马自坤 | Curing and forming device of lining of sealed container |
| CN102513510A (en) * | 2011-12-30 | 2012-06-27 | 济南圣泉集团股份有限公司 | Preparation method for hollow sand core, production mould for same and production device for same |
| CN104070687A (en) * | 2014-06-06 | 2014-10-01 | 中航复合材料有限责任公司 | Method for forming composite material pipe mold element by pressurizing air bags with assistance of resin film transfer |
| CN204604697U (en) * | 2015-05-15 | 2015-09-02 | 湖北三江航天江河化工科技有限公司 | A kind of rubber pneumatic bag manufactured for engine heat insulation layer |
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2015
- 2015-05-15 CN CN201510246524.3A patent/CN104842479A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2430272Y (en) * | 2000-04-28 | 2001-05-16 | 王云涛 | Inflating rubber core mould |
| CN1865047A (en) * | 2005-05-18 | 2006-11-22 | 丰田合成株式会社 | Airbag device |
| CN102285118A (en) * | 2011-04-21 | 2011-12-21 | 马自坤 | Curing and forming device of lining of sealed container |
| CN102513510A (en) * | 2011-12-30 | 2012-06-27 | 济南圣泉集团股份有限公司 | Preparation method for hollow sand core, production mould for same and production device for same |
| CN104070687A (en) * | 2014-06-06 | 2014-10-01 | 中航复合材料有限责任公司 | Method for forming composite material pipe mold element by pressurizing air bags with assistance of resin film transfer |
| CN204604697U (en) * | 2015-05-15 | 2015-09-02 | 湖北三江航天江河化工科技有限公司 | A kind of rubber pneumatic bag manufactured for engine heat insulation layer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109648887A (en) * | 2018-12-25 | 2019-04-19 | 内蒙古航天红峡化工有限公司 | A kind of solid propellant rocket half air bag cure under pressure heat insulation layer device and method |
| CN109648887B (en) * | 2018-12-25 | 2021-07-20 | 内蒙古航天红峡化工有限公司 | Device and method for pressurizing and curing heat insulation layer of half airbag of solid rocket engine |
| CN113818972A (en) * | 2021-05-25 | 2021-12-21 | 西安英利科电气科技有限公司 | Bonding structure and method for thermal insulation layer of solid rocket combustion chamber |
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Application publication date: 20150819 |
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| RJ01 | Rejection of invention patent application after publication |