CN114427504A - Pneumatic shape-retaining full-embedded cable composite material shell structure - Google Patents
Pneumatic shape-retaining full-embedded cable composite material shell structure Download PDFInfo
- Publication number
- CN114427504A CN114427504A CN202111655889.3A CN202111655889A CN114427504A CN 114427504 A CN114427504 A CN 114427504A CN 202111655889 A CN202111655889 A CN 202111655889A CN 114427504 A CN114427504 A CN 114427504A
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- Prior art keywords
- cable
- heat insulation
- insulation layer
- shell structure
- composite shell
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- 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.)
- Pending
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- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 238000009413 insulation Methods 0.000 claims abstract description 57
- 239000000835 fiber Substances 0.000 claims abstract description 10
- 239000011347 resin Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 9
- 239000003814 drug Substances 0.000 claims description 8
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000004917 carbon fiber Substances 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 238000003754 machining Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 abstract description 9
- 238000004804 winding Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
- F02K9/32—Constructional parts; Details not otherwise provided for
- F02K9/34—Casings; Combustion chambers; Liners thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0406—Details thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0437—Channels
- H02G3/045—Channels provided with perforations or slots permitting introduction or exit of wires
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0462—Tubings, i.e. having a closed section
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cable Accessories (AREA)
Abstract
The utility model relates to a solid rocket engine's field specifically discloses a bury cable composite shell structure in full of pneumatic shape-preserving, including cable, mandrel, be located the outside heat insulation layer of mandrel and be located the outside composite shell fibre resin layer of heat insulation layer, the surface of mandrel is provided with groove channel, and the internal surface arch of heat insulation layer inlays locates in groove channel, and the heat insulation layer surface is provided with cable channel groove, and cable channel groove is just to groove channel, and in cable channel groove was located to the cable inlays, it has reached solid rocket engine composite shell surfacing and has not the evagination.
Description
Technical Field
The application relates to the technical field of solid rocket engines, in particular to a pneumatic shape-retaining all-buried cable composite shell structure.
Background
The solid rocket engine is often used as a cabin section of a rocket (rocket), and a cable of an engine combustion chamber shell is used as an engine signal control line, so that the solid rocket engine plays an important role in control systems such as engine signal transmission and the like. With the continuous improvement of the requirements of comprehensive performance such as flight range and the like of the aircraft, higher requirements are provided for the lightening and pneumatic shape-keeping of the solid rocket engine, higher energy thrust output is sought, the convex structure is reduced to the greatest extent, the optimal shape-keeping design is realized, and the aerodynamic resistance in the flight process can be reduced.
When the current solid engine is designed by adopting a composite material shell structure, firstly, a front and rear connector assembly (with a heat insulating layer) and a barrel section heat insulating layer are laid, bonded and fixed on a metal or nonmetal winding core mould, and then a wet method or a dry method is carried out to wind and form the shell structure by carbon fiber; then, the front and rear connecting skirt sections are butted with the shell structure, and axial reinforcement and circumferential fiber winding are carried out on the shell structure; secondly increase cable laying outside the fashioned cabin body of casing, cabin section cable junction around the cable passes through the cabin hole of wearing of front and back skirt section and inner space, and the outside cable both sides of casing are filled flexible material and are protected, and the cabin hole position department of wearing carries out the fixed protection of variable cross section cable cover, and outside unified winding hoop winding layer is consolidated, and the annular fiber winding layer can select for use low temperature resin solidification, reduces the influence to casing body structure.
The existing composite material shell adopts a cable convex layout, and the manufacturing and forming are realized through multiple processes, so that the existing problems are mainly that:
1) the cables of the composite material shell of the conventional solid rocket engine are arranged in an outward-protruding mode, enter the cabin body through cabin penetrating holes in the front skirt section and the rear skirt section, the windward side is increased, the flight resistance of the aircraft is improved, and the range of the aircraft is influenced to a certain degree.
2) The conventional composite material shell is formed by winding and curing or pre-curing the composite material shell, laying and protecting cables outside the shell, reinforcing the front and rear fairing covers, and curing the reinforced front and rear fairing covers in an annular winding mode, so that the working procedure is complicated.
Disclosure of Invention
For solving conventional combined material casing and adopting cable evagination formula overall arrangement, realize manufacturing the shaping through many rounds of processes, there is the comparatively loaded down with trivial details problem of pneumatic resistance of evagination structure increase, the complicated process of structure, this application discloses the full buried cable combined material shell structure of pneumatic shape-preserving.
The technical scheme is as follows:
the utility model provides a pneumatic full-embedded cable composite shell structure of type, includes cable subassembly, mandrel, is located the outside heat insulation layer of mandrel and is located the outside combined material casing fibre resin layer of heat insulation layer including the electricity, the surface of mandrel is provided with groove channel, and the internal surface arch of heat insulation layer inlays locates in groove channel, and the heat insulation layer surface is provided with cable channel groove, and cable channel groove is just to groove channel, and cable subassembly includes the cable, and the cable inlays locates in the cable channel groove.
In the above-mentioned all-buried cable composite housing structure, the bonding and caulking between the cable and the cable passage groove are performed by a flexible adhesive.
In the above-mentioned all-buried cable composite material shell structure, the cable assembly further includes a cable tube, and the cable tube is sleeved outside the cable.
In the above-mentioned all-buried cable composite material shell structure, the cable tube is a flexible cable tube or a hard cable tube.
In the above-mentioned all-buried cable composite material shell structure, the hard cable tube is a carbon fiber cable tube or a metal cable tube.
In the above-mentioned all-buried cable composite shell structure, the core mold is a core mold with or without chemicals.
In the above fully-buried cable composite shell structure, the core mold without the chemical agent is formed by a mold or machining the groove channel.
In the fully-buried cable composite shell structure, when the mold with the drug core is used for filling and molding in the mold, the molding of the groove channel is realized.
In foretell full buried cable combined material shell structure, the heat insulation layer includes front joint heat insulation layer, back joint heat insulation layer, barrel section heat insulation layer, and the outside of mandrel is located from the both ends cover of mandrel respectively to front joint heat insulation layer and back joint heat insulation layer, and barrel section heat insulation layer lays in the mandrel outside, and barrel section heat insulation layer bonds with the faying surface of front joint heat insulation layer and back joint heat insulation layer.
In summary, the present application at least includes the following beneficial technical effects:
1) the solid engine composite material shell is used as a combustion chamber space of a charging storage container and high-temperature and high-pressure gas and is used as an aircraft projectile body structure. The invention adopts the heat insulation layer to preset the groove structure of the cable channel, the cable and the cable tube outside the cable are matched with the type spectrum, and the layout is more compact and simplified.
2) The original outward-protruding cable structure is optimized to be a full-embedded structure, the pneumatic protection type well reduces the windward area, thereby reducing the pneumatic resistance in flight, and improving the available rigidity and reliability of the whole structure to a certain extent
3) The production efficiency is improved, the two-time winding design that the original composite shell is wound on the body layer firstly and then wound on the cable is one-time laying and one-time winding co-curing of the cable, the process is optimized, and the production efficiency can be improved.
Drawings
FIG. 1 is a schematic diagram showing an overall structure and a cross-sectional view of a housing structure of a pneumatic shape-retaining all-buried cable composite according to an embodiment of the present invention;
FIG. 2 is a schematic view of a profile-matching cable and cable tube assembly;
FIG. 3 is a schematic view of the structure of the mandrel;
fig. 4 is a cross-sectional view through the mandrel axis of the composite shell structure of the fully embedded cable in accordance with the embodiment of the present invention, wherein (a) (b) are cross-sectional views of the medicated mandrel and the non-medicated mandrel, respectively, and (c) is an enlarged view of the depression of the insulation layer.
Description of the reference numerals: 1. a composite shell fiber resin layer; 2. a cable assembly; 3. a core mold; 31. a groove channel; 4. a flexible adhesive; 5. a cable; 6. a cable tube; 7. a heat insulating layer; 71. a cable channel groove; 8. the groove outlet structure on the heat insulating layer of the front and the rear connectors.
Detailed Description
The present application will now be described in further detail with reference to the accompanying figures 1-4 and specific examples:
the embodiment of the application discloses pneumatic shape-retaining type full-embedded cable composite shell structure.
Referring to fig. 1 and 2, the pneumatic shape-preserving type all-buried cable composite shell structure comprises a cable assembly 2, a core mold 3, a heat insulation layer 7 positioned outside the core mold 3, and a composite shell fiber resin layer 1 positioned outside the heat insulation layer 7, wherein the cable assembly 2 comprises a cable 5, and the cable 5 is embedded in the outer surface of the heat insulation layer 7.
Referring to fig. 4, the surface of the core mold 3 is provided with a groove channel 31, the inner surface of the heat insulating layer 7 is convexly embedded in the groove channel 31, that is, the thickness of the heat insulating layer 7 at the position of the groove channel 31 is increased, the outer surface of the heat insulating layer 7 is provided with a cable 5 channel groove, the cable 5 channel groove is opposite to the groove channel 31, the cable 5 is embedded in the cable 5 channel groove, the cable 5 and the cable 5 channel groove are bonded and caulked through the flexible adhesive 4, and synchronous adaptive deformation of the cable 5 along with the loading of the shell is ensured.
Referring to fig. 3, the cable assembly 2 further includes a cable tube 6, the cable tube 6 is sleeved outside the cable 5 to protect the cable 5 according to the working pressure of the engine and the pressure bearing capacity of the cable 5, and the cable 5 passes through the cable tube 6 and is connected with the electric connector at outlets at two ends to realize electrical communication with the cabin section level. At the same time, the synchronous adaptive deformation of the cable 5 under load is ensured. The hard cable tube 6 can be a carbon fiber cable tube 6 or a metal cable tube 6, and the flexible adhesive 4 is adhered between the cable tube 6 and the channel groove of the cable 5.
The cable 5 is designed to be flat and allowance as much as possible; meanwhile, the cable 5 is subjected to flexible cable tube 6 according to the working pressure condition or carbon fiber or metal cable tube 6 matched with the channel groove profile of the cable 5 is adopted; the cable tube 6 structure is designed according to the bearing requirement by structural topology optimization, and the protection and shielding isolation capability of the through tube cable 5 is enhanced; the cable tube 6 needs to be matched to the pre-set channel profile.
The core mold 3 is a core mold 3 with medicine or a core mold 3 without medicine, the winding core mold 3 is made of an ablatable material or a non-ablatable material according to the polar hole condition, and the core mold 3 is preset with a channel groove with a matched profile at a corresponding position according to the profile of the cable 5. Specifically, when the medicine core-carrying die 3 is filled in a die for forming, the groove channel 31 is formed; the formation of the groove channel 31 is achieved by a die or machining without the drug core mold 3.
The heat insulation layer 7 comprises a front connector heat insulation layer, a rear connector heat insulation layer and a barrel section heat insulation layer, the front connector heat insulation layer, the rear connector heat insulation layer and the barrel section heat insulation layer are formed in a preset mode, the heat insulation layer 7 with a cable 5 channel groove in the surface is obtained, the front connector heat insulation layer and the rear connector heat insulation layer are respectively sleeved on the outer portion of the core mold 3 from the two ends of the core mold 3, the barrel section heat insulation layer is paved on the outer portion of the core mold 3, and the barrel section heat insulation layer is bonded with the lap surfaces of the front connector heat insulation layer and the rear connector heat insulation layer. The requirements of air tightness and thermal protection of the heat insulating layer 7 are met. The groove outlet structure 8 of the cable 5 channel groove on the heat insulating layer of the front connector and the heat insulating layer of the rear connector can be adaptively adjusted to be completely attached to the molded surface of the front connector and the molded surface of the rear connector.
The implementation principle of the application is as follows: when the core mold 3 is formed, the core mold 3 with the groove channel 31 is formed by a mold forming or machining mode, the front connector heat insulation layer, the rear connector heat insulation layer and the barrel section heat insulation layer which are preset with the cable 5 channel groove are laid outside the core mold 3, and the lap surfaces of the front connector heat insulation layer, the rear connector heat insulation layer and the barrel section heat insulation layer are bonded and matched with the groove channel 31 of the core mold 3. And then, the cable 5 and the cable tube 6 are laid in the channel groove of the cable 5, and the flexible adhesive 4 matched with the heat insulating layer 7 system is adopted to perform gap filling and protection between the cable tube 6 and the channel groove of the cable 5. And finally, winding and molding the carbon fiber by adopting a wet method or a dry method, and integrally co-curing the composite shell to obtain the composite shell fiber resin layer 1, thereby realizing the pneumatic shape-keeping structure of the fully-embedded cable 5 of the composite shell.
The cable 5 is completely embedded in the composite material shell fiber resin layer 1, and the surface of the composite material shell fiber resin layer 1 is not convex outwards. The overall structure layout is compact, the two-time winding design of winding the original composite material shell and laying and then winding the cable 5 is one-time winding, the pneumatic shape is good, the flight resistance is reduced, the process is optimized, and the available rigidity and reliability of the overall structure are improved to a certain extent.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides a pneumatic full-embedded cable combined material shell structure of type which characterized in that: including cable subassembly (2), mandrel (3), be located the outside heat insulation layer (7) of mandrel (3) and be located outside combined material casing fibre resin layer (1) of heat insulation layer (7), the surface of mandrel (3) is provided with recess passageway (31), and the internal surface arch of heat insulation layer (7) is inlayed and is located in recess passageway (31), and heat insulation layer (7) surface is provided with cable (5) passageway recess, and cable (5) passageway recess is just to recess passageway (31), and cable subassembly (2) include cable (5), and cable (5) are inlayed and are located in cable (5) passageway recess.
2. The fully embedded cable composite shell structure of claim 1, wherein: the cable (5) and the channel groove of the cable (5) are bonded and caulked through a flexible adhesive (4).
3. The fully buried cable composite shell structure according to claim 1, wherein: the cable assembly (2) further comprises a cable tube (6), and the cable tube (6) is sleeved outside the cable (5).
4. The fully embedded cable composite shell structure of claim 3, wherein: the cable tube (6) is a flexible cable tube (6) or a hard cable tube (6).
5. The fully buried cable composite shell structure according to claim 4, wherein: the hard cable tube (6) is a carbon fiber cable tube (6) or a metal cable tube (6).
6. The fully embedded cable composite shell structure of claim 1, wherein: the core mould (3) is a core mould (3) with medicine or a core mould (3) without medicine.
7. The fully buried cable composite shell structure according to claim 6, wherein: the core mould (3) without the medicine realizes the molding of the groove channel (31) through a mold or machining.
8. The fully embedded cable composite shell structure of claim 6, wherein: when the medicine-carrying core mold (3) is charged and molded in the mold, the molding of the groove channel (31) is realized.
9. The fully embedded cable composite shell structure of claim 1, wherein: the heat insulation layer (7) comprises a front connector heat insulation layer, a rear connector heat insulation layer and a barrel section heat insulation layer, the front connector heat insulation layer and the rear connector heat insulation layer are respectively sleeved on the outer portion of the core mold (3) from the two ends of the core mold (3), the barrel section heat insulation layer is paved on the outer portion of the core mold (3), and the barrel section heat insulation layer is bonded with the lap joint surface of the front connector heat insulation layer and the lap joint surface of the rear connector heat insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111655889.3A CN114427504A (en) | 2021-12-30 | 2021-12-30 | Pneumatic shape-retaining full-embedded cable composite material shell structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111655889.3A CN114427504A (en) | 2021-12-30 | 2021-12-30 | Pneumatic shape-retaining full-embedded cable composite material shell structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114427504A true CN114427504A (en) | 2022-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111655889.3A Pending CN114427504A (en) | 2021-12-30 | 2021-12-30 | Pneumatic shape-retaining full-embedded cable composite material shell structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN114427504A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116702391A (en) * | 2023-05-15 | 2023-09-05 | 东莞理工学院 | Regularization-based conformal topology optimization design method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2108641A (en) * | 1981-10-20 | 1983-05-18 | Baj Vickers Ltd | Rocket motors |
| CN107676814A (en) * | 2017-09-26 | 2018-02-09 | 湖北三江航天江北机械工程有限公司 | Inside bury the composite shell preparation of cable |
| RU179370U1 (en) * | 2017-09-28 | 2018-05-11 | Акционерное общество "Пермский завод "Машиностроитель" | Solid propellant rocket engine housing made of composite material |
| CN109244997A (en) * | 2018-07-26 | 2019-01-18 | 西安航天动力技术研究所 | Cable penetrating structure is buried in a kind of composite shell body |
| CN112576409A (en) * | 2020-12-03 | 2021-03-30 | 上海新力动力设备研究所 | Combustion chamber shell of solid rocket engine |
| CN213627809U (en) * | 2020-11-30 | 2021-07-06 | 湖北航天技术研究院总体设计所 | Embedded cable cover for solid rocket engine |
-
2021
- 2021-12-30 CN CN202111655889.3A patent/CN114427504A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2108641A (en) * | 1981-10-20 | 1983-05-18 | Baj Vickers Ltd | Rocket motors |
| CN107676814A (en) * | 2017-09-26 | 2018-02-09 | 湖北三江航天江北机械工程有限公司 | Inside bury the composite shell preparation of cable |
| RU179370U1 (en) * | 2017-09-28 | 2018-05-11 | Акционерное общество "Пермский завод "Машиностроитель" | Solid propellant rocket engine housing made of composite material |
| CN109244997A (en) * | 2018-07-26 | 2019-01-18 | 西安航天动力技术研究所 | Cable penetrating structure is buried in a kind of composite shell body |
| CN213627809U (en) * | 2020-11-30 | 2021-07-06 | 湖北航天技术研究院总体设计所 | Embedded cable cover for solid rocket engine |
| CN112576409A (en) * | 2020-12-03 | 2021-03-30 | 上海新力动力设备研究所 | Combustion chamber shell of solid rocket engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116702391A (en) * | 2023-05-15 | 2023-09-05 | 东莞理工学院 | Regularization-based conformal topology optimization design method |
| CN116702391B (en) * | 2023-05-15 | 2024-02-13 | 东莞理工学院 | Regularization-based conformal topology optimization design method |
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Application publication date: 20220503 |
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