CN114056579A - Integral composite material air cavity structure - Google Patents
Integral composite material air cavity structure Download PDFInfo
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- CN114056579A CN114056579A CN202111435548.5A CN202111435548A CN114056579A CN 114056579 A CN114056579 A CN 114056579A CN 202111435548 A CN202111435548 A CN 202111435548A CN 114056579 A CN114056579 A CN 114056579A
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- cavity
- cross beam
- wind
- shelf
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- 239000002131 composite material Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 10
- 239000000853 adhesive Substances 0.000 claims abstract description 4
- 238000005192 partition Methods 0.000 claims description 35
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 17
- 230000000903 blocking effect Effects 0.000 claims description 17
- 239000004917 carbon fiber Substances 0.000 claims description 17
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 11
- 239000000835 fiber Substances 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 239000010410 layer Substances 0.000 description 10
- 230000007246 mechanism Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 239000003822 epoxy resin Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft
- B64D13/06—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft the air being conditioned
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D13/00—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft
- B64D13/06—Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, or structural parts of the aircraft the air being conditioned
- B64D2013/0603—Environmental Control Systems
- B64D2013/0614—Environmental Control Systems with subsystems for cooling avionics
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
An integral composite material air cavity structure comprises an air cavity shelf and an air cavity bottom plate connected with the air cavity shelf through co-adhesive joint, wherein an equipment bracket is arranged at the top of the air cavity shelf, the air cavity bottom plate is arranged at the bottom of the air cavity shelf, the air cavity shelf and the air cavity bottom plate are connected in a co-adhesive joint mode, the air cavity shelf and the equipment bracket are matched to form a cold air cavity, and the air cavity shelf and the air cavity bottom plate are matched to form a hot air cavity; the air cavity shelf is matched with the air cavity shelf to form a hot air cavity, and the equipment bracket is used as a part of an air cavity structure, so that the equipment bracket and the air cavity structural member are integrated, and the space is saved and the weight is reduced; the bottom of the front cross beam and the bottom of the rear cross beam are integrally formed with the air cavity bottom plate by adopting a co-cementing forming process, so that the formed hot air cavity is reduced in ventilation leakage to the maximum extent, and the leakage amount of the hot air cavity is effectively reduced.
Description
Technical Field
The invention belongs to the field of air cavity design, and particularly relates to an integral composite material air cavity structure.
Background
The general civil aircraft onboard electronic equipment is intensively arranged on an electronic equipment rack of an E-E cabin, and the equipment rack is connected with a ventilation system to provide a uniform ventilation cooling interface for the electronic equipment so as to ensure that the working environment temperature of the electronic and electric equipment cabin of the aircraft is within a specified A2 type environment temperature range. The rack of the air cavity of the equipment rack is used as a distribution system of cold air and hot air of the equipment rack, cold air enters the electronic equipment from the bottom of the electronic equipment along the air cavity of the equipment rack, and hot air exhausted by the electronic equipment is pumped out of the hot air cavity of the equipment rack and is exhausted out of the cabin. In order to save space and reduce weight, the structural part of the equipment frame is used as a cold air cavity and a hot air cavity of the equipment frame, so that the ventilation air cavity of the equipment frame and the structural part of the equipment frame are integrated to form a double-layer air cavity, the upper air cavity is a cold air cavity, and the lower air cavity is a hot air cavity.
In the design of the existing metal double-layer wind cavity, an aluminum alloy sheet metal part is mainly riveted to form the wind cavity, and referring to fig. 1, the existing metal double-layer wind cavity is formed by riveting a cold wind blocking plate, a cold wind cavity joint, a wind cavity isolation plate, a front cross beam, a rear cross beam and a wind cavity bottom plate through rivets, and in order to reduce the leakage amount of the wind cavity, a sealant is often used for sealing the surface of a part binding surface and sealing the edge of the binding surface in an assembling process.
Because the metal double-layer air cavity is formed by riveting a metal structural part, the sealing quality of the air cavity often depends on the planeness in the production process of the sheet metal part, the deformation of a sheet metal in the riveting process, the riveting quality, the size of a joint surface gap between the parts, the process operation in the sealing process and the like. The complicated assembly process causes the leakage amount of the wind cavity to be increased and increases the operation difficulty and the sealing difficulty in the assembly process of the wind cavity. And the cold air blocking plate, the cold air cavity joint, the air cavity isolating plate and the front and rear cross beams are riveted due to the need, parts are attached to each other, and the weight of the air cavity is increased.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide an integrated integral composite air cavity structure which reduces the weight of an air cavity, reduces the process difficulty and reduces the ventilation leakage of the air cavity.
The purpose of the invention is realized by adopting the following technical scheme. According to the integral composite material air cavity structure provided by the invention, the integral composite material air cavity structure comprises an air cavity shelf 1 and an air cavity bottom plate 7 arranged at the bottom of the air cavity shelf 1, the air cavity shelf 1 and the air cavity bottom plate 7 are matched to form a hot air cavity 3, and the air cavity bottom plate 7 and the air cavity shelf 1 are connected by adopting a co-adhesive molding process; the top of the air chamber shelf 1 is provided with an equipment bracket 2, the air chamber shelf 1 is matched with the equipment bracket 2 to form a cold air chamber, and cold air in the cold air chamber 4 provides cold air for second electronic equipment installed on the equipment bracket 2.
Further, wind chamber shelf 1 and wind chamber bottom plate 7 all adopt carbon-fibre composite, and carbon-fibre composite wind chamber shelf, carbon-fibre composite wind chamber bottom plate are single combined material finished piece, through the unidirectional preimpregnation material of taking of carbon fiber and spread the postcure shaping, wind chamber shelf and wind chamber bottom plate select different grade type carbon-fibre material and preimpregnation material to spread the layer number according to the different position atress condition.
Further, the air cavity shelf 1 comprises a front cross beam 101, a rear cross beam 102 and an air cavity partition plate 103, the air cavity partition plate 103 is arranged between the front cross beam 101 and the rear cross beam 102, the air cavity partition plate 103, the front cross beam 101 and the rear cross beam 102 are integrally arranged, and the front cross beam 101, the rear cross beam 102, the air cavity partition plate 103 and the air cavity bottom plate 7 form a hot air cavity 3.
Furthermore, a plurality of through holes are formed in the air cavity bottom plate 7, the air cavity shelf 1 is arranged above the first electronic device, and heat generated above the first electronic device enters the hot air cavity through the through holes in the air cavity bottom plate 7.
Further, the front cross beam 101, the rear cross beam 102, the air chamber partition 103 and the equipment bracket 2 together form the cold air chamber 4, and the equipment bracket 2 is used as a part of the air chamber structure, so that the equipment bracket 2 and the air chamber structure are integrated into a whole, and the purposes of saving space and reducing weight are achieved.
Further, the equipment bracket 2 comprises an equipment bracket bottom plate 201 and an equipment bracket back plate 202 which are fixed together, and the front cross beam 101, the rear cross beam 102, the air cavity partition 103 and the equipment bracket bottom plate 201 together form the cold air cavity 4.
Furthermore, a plurality of flow regulating holes 204 are formed in the bottom plate of the equipment bracket, the second electronic equipment is placed on the equipment bracket 2 and located above the flow regulating holes 204, and cold air in the cold air cavity 4 provides cold air for the second electronic equipment through the flow regulating holes 204.
Further, the front beam 101 comprises a front beam main body 1011, and a front beam upper extension 1012 and a front beam lower extension 1013 are formed by bending the top and bottom of the front beam main body 1011 towards the direction away from the rear beam 102, and a plurality of first mounting holes are arranged on the front beam upper extension 1012; the rear cross member 102 includes a rear cross member main body 1021, and a rear cross member upper extension 1022 and a rear cross member lower extension 1023 formed by bending the top and bottom of the rear cross member main body 1021 in a direction away from the front cross member 101, and a plurality of second mounting holes corresponding to the first mounting holes on the front cross member upper extension 1012 are formed in the rear cross member upper extension 1022.
Further, a plurality of countersunk bolt mounting holes and first raised bolt mounting holes are formed in the equipment bracket bottom plate 201, the countersunk bolts penetrate through corresponding second mounting holes in the rear cross beam upper extension part 1022 and then are matched with corresponding nuts, and the raised bolts 8 penetrate through corresponding first mounting holes in the front cross beam upper extension part 1012 and then are matched with corresponding nuts, so that the equipment bracket 2 is fixedly mounted on the air cavity shelf 1.
Further, the air chamber partition plate 103 includes an air chamber partition plate body 1031, the two ends of the air chamber partition plate body 1031 are fixedly provided with a cold air chamber blocking plate 1032 and a cold air chamber connector 1033, and thereby the end of the cold air chamber blocking plate 1032 far away from the air chamber partition plate body is sealed with the cold air chamber blocking plate 1032 by the cold air chamber blocking plate 1032 fixedly connected with the air chamber bottom plate 7.
Further, the one end tip orientation that cold wind chamber closure plate 1032 was kept away from to wind chamber shelf 1 is provided with fixed plate 5 towards deviating from wind chamber bottom plate 7 directions, and when equipment bracket 2 installed on wind chamber shelf 1, equipment bracket bottom plate 201 lateral part and fixed plate 5 butt to seal the one end tip that cold wind chamber 4 corresponds fixed plate 5 under the combined action of bracket bottom plate 201, cold wind chamber joint 1033 and fixed plate 5.
Furthermore, the cold air cavity 4 and the end far away from the fixing plate 5 are cold air cavity inlets, the aircraft environment-controlled cold air output end is connected with the cold air cavity inlets, and the aircraft environment-controlled cold air enters the cold air cavity 4 through the cold air cavity inlets and then provides cold air for the second electronic equipment through the flow adjusting holes 204 in the equipment bracket 2, so that the second electronic equipment is cooled.
Further, the one end that hot-blast chamber 3 kept away from cold wind chamber closure plate 1032 is hot-blast delivery outlet, hot-blast delivery outlet still with be used for with the hot-blast air pumping to outside exhaust device in the hot-blast chamber 3, hot-blast through-hole on the wind chamber bottom plate 7 that produces in the first electronic equipment top gets into in the hot-blast chamber 3 then is taken away through hot-blast delivery outlet, the exhaust chamber structure is outside, cool down first electronic equipment, hot-blast in the hot-blast chamber 3 can not spread to cold wind chamber 4 under the effect of wind chamber baffle 103.
By means of the technical scheme, the invention has the advantages that:
1. the equipment bracket is arranged above the equipment shelf, the bottom of the equipment shelf is provided with an air cavity bottom plate, the air cavity shelf is matched with the equipment bracket to form a structure comprising a cold air cavity, the air cavity shelf is matched with the air cavity shelf to form a hot air cavity, and the equipment bracket is used as a part of an air cavity structure, so that the equipment bracket and the air cavity structure are integrated, and the space is saved and the weight is reduced;
2. the bottom of the front cross beam and the bottom of the rear cross beam are integrally formed with the air cavity bottom plate by adopting a co-cementing forming process, so that the formed hot air cavity can reduce ventilation leakage to the maximum extent, and the leakage amount of the hot air cavity is effectively reduced;
3. the air cavity bottom plate is provided with a plurality of through holes, the air cavity shelf is arranged above the first electronic equipment, hot air generated at the top of the first electronic equipment enters the hot air cavity through the through holes on the air cavity bottom plate and is then pumped away through the hot air outlet, the hot air is discharged out of the air cavity structure to cool the first electronic equipment, and the hot air in the hot air cavity cannot diffuse to the cold air cavity under the action of the air cavity partition plate;
4. be provided with a plurality of flow control holes on the equipment bracket bottom plate, second electronic equipment places the position that is located flow control hole top on the equipment bracket, and cold wind in the cold wind intracavity passes through flow control hole and provides cold wind to second electronic equipment.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of a metal double-layer wind cavity in the prior art;
FIG. 2 is a schematic structural view of an integrated composite air cavity structure according to the present invention;
FIG. 3 is a split view of FIG. 2;
FIG. 4 is a schematic view of an equipment rack shelf with 12 plies of carbon fiber unidirectional tape plies and a 180 cured ply-toughened epoxy resin carbon fiber unidirectional tape prepreg selected;
FIG. 5 is a view of the integrated composite wind chamber structure in combination with the equipment carrier of the present invention;
FIG. 6 is a front view of FIG. 5;
FIG. 7 is a top view of FIG. 5;
FIG. 8 is a side view of FIG. 5;
fig. 9 is a schematic structural view of the equipment carrier of fig. 5.
[ reference numerals ]
1-wind chamber shelf, 101-front beam, 1011-front beam main body, 1012-front beam upper extension, 1013-lower beam lower extension, 102-rear beam, 103-wind chamber partition, 1031-wind chamber partition body, 1032-cold wind chamber closure, 1033-cold wind chamber joint, 2-equipment bracket, 201-equipment bracket bottom plate, 202-equipment bracket back plate, 203-bracket guide, 2031-first side plate, 2032-support plate, 204-flow regulation hole, 3-hot wind chamber, 4-cold wind chamber, 5-fixing plate, 6-countersunk bolt, 7-wind chamber bottom plate, 8-raised head bolt, 9-locking mechanism.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be given to the embodiments, structures, features and effects of a monolithic composite material wind cavity structure according to the present invention with reference to the accompanying drawings and preferred embodiments.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Referring to fig. 1 to 9, an integrated composite material wind cavity structure includes a wind cavity shelf 1 and an equipment bracket 2, wherein the equipment bracket 2 is mounted on the wind cavity shelf 1. Referring to fig. 2, the equipment bracket 2 includes an equipment bracket bottom plate 201 and an equipment bracket back plate 202 disposed at an end of the equipment bracket bottom plate 201, the equipment bracket bottom plate 201 is provided with a plurality of flow rate adjusting holes 204, a plurality of countersunk bolt mounting holes and a plurality of first raised head bolt mounting holes, the countersunk bolt mounting holes and the first raised head bolt mounting holes are disposed corresponding to the air cavity shelf 1, and the countersunk bolts 6 pass through the countersunk bolt mounting holes and the raised head bolts 8 pass through the raised head bolt mounting holes and then are matched with the adapted nuts to fix the equipment bracket 2 on the air cavity shelf 1. Referring to fig. 9, two sides of the bottom plate 201 of the equipment rack are folded upwards to form rack guides 203, in this embodiment, the rack guides 203 are triangular rack guides, and in other embodiments of the present invention, the specific shape of the rack guides 203 is set according to actual situations. The cam bracket guide includes a first side plate 2031 and a support plate 2032 fixedly connected; the first side plate 2031 of the triangular bracket guide corresponds to the side of the equipment bracket back plate 202, a plurality of rivet holes are formed in the left side and the right side of the equipment bracket back plate 202, and rivets pass through the first side plate 2031 of the triangular bracket guide and then enter the rivet holes in the two sides of the equipment bracket back plate 202 and are matched with the rivet holes so as to connect the two sides of the equipment bracket back plate 202 with the first side plate 2031 of the triangular bracket guide, i.e. the equipment bracket back plate 202 is fixedly installed on the equipment bracket bottom plate 201. The bottom of the end of the bracket bottom plate 201 far away from the equipment bracket back plate 202 is provided with a plurality of locking mechanisms 9 for locking the electronic equipment placed on the locking mechanisms, in the embodiment, the locking mechanisms are class A lockers, in other embodiments of the present invention, the locking mechanism includes, but is not limited to, a class a locking device, the bottom of the equipment bracket back plate 202 is bent to a side away from the locking mechanism 9 to form a bent portion, a plurality of second raised head bolt mounting holes are formed on the bent portion, the second raised head bolt mounting holes are correspondingly formed on the bracket bottom plate 201, and the raised head bolts 8 sequentially penetrate through the second raised head bolt mounting holes on the equipment bracket back plate 202 and the first raised head bolt mounting holes on the bracket bottom plate 201 and then are matched with the adapted nuts, so as to fixedly mount the equipment bracket back plate 202 on the bracket bottom plate 201, and also mount the equipment bracket 2 on the air cavity shelf 1 and mount the equipment bracket 2 on the air cavity shelf 1.
Wind chamber shelf 1 is for selecting for use carbon-fibre composite's wind chamber shelf, and wind chamber shelf 1 includes front beam 101, back beam 102, wind chamber baffle 103, and front beam 101 and back beam 102 parallel arrangement and structure are the same, and wind chamber baffle 103 sets up between front beam 101 and back beam 102 and wind chamber baffle 103 and front beam 101, back beam 102 set up as an organic whole. The fixed wind chamber bottom plate 7 that is provided with in wind chamber shelf 1 bottom, front beam 101, back beam 102, wind chamber baffle 103 and wind chamber bottom plate 7 constitute hot-blast chamber 3 altogether, wind chamber bottom plate 7 is combined material wind chamber bottom plate among the embodiment, front beam 101, back beam 102 bottom adopt the molding technology integrated into one piece of cohering altogether with wind chamber bottom plate 7, can make 3 furthest's the reduction in the hot-blast chamber that forms ventilate and reveal, effectively reduced the leakage volume in hot-blast chamber 3. The equipment bracket 2 is arranged above the air cavity shelf 1, the front cross beam 101, the rear cross beam 102, the air cavity partition plate 103 and the equipment bracket 2 jointly form the cold air cavity 4, and the equipment bracket 2 is used as one part of an air cavity structure, so that the equipment bracket 2 and the air cavity structure are integrated, and the space and the weight are saved.
Referring to fig. 2, 3, 4 and 7, the front beam 101 includes a main body 1011 of the front beam, and the top and bottom of the main body 1011 of the front beam are bent 90 degrees away from the rear beam 102 to form an upper extension 1012 and a lower extension 1013 of the front beam, the upper extension 1012 and the lower extension 1013 of the front beam are disposed in parallel, and a plurality of first mounting holes are disposed on the upper extension 1012 of the front beam. The rear cross beam 102 comprises a rear cross beam main body part 1021, the top and the bottom of the rear cross beam main body part 1021 are bent 90 ℃ towards the direction departing from the front cross beam 101 to form a rear cross beam upper extension part 1022 and a rear cross beam lower extension part 1023, the rear cross beam upper extension part 1022 and the rear cross beam lower extension part 1023 are arranged in parallel, a plurality of second mounting holes are formed in the rear cross beam upper extension part 1022, and the second mounting holes and the first mounting holes are correspondingly arranged and have the same structure; in addition, the end of the wind cavity shelf 1 is further provided with a fixing plate 5, in this embodiment, the fixing plate 5 and the wind cavity shelf 1 are designed as a whole, that is, the fixing plate 5 and the upper extension 1012 of the front beam and the upper extension 1022 of the rear beam are arranged as a whole, and in this embodiment, the fixing plate 5 faces the direction departing from the wind cavity bottom plate 7 and is also perpendicular to the wind cavity bottom plate 7. When the equipment bracket 2 is installed above the wind cavity shelf 1, the countersunk bolts 6 penetrate through the corresponding second installation holes on the upper extension part 1022 of the rear cross beam and then are matched with the corresponding nuts, and the raised head bolts 8 penetrate through the corresponding first installation holes on the upper extension part 1012 of the front cross beam and then are matched with the corresponding nuts, so that the equipment bracket 2 is fixedly installed at the top of the wind cavity shelf 1. During the use, the air cavity shelf 1 is arranged at the top of first electronic equipment, second electronic equipment is placed on the equipment bracket 2 and is located above the flow adjusting hole 204, cold air in the cold air cavity 4 provides cold air for the second electronic equipment through the flow adjusting hole 204, and the raised head bolt 8 cannot influence the installation of the second electronic equipment. The front cross beam main body part 1011 and the rear cross beam main body part 1021 are arranged in parallel, the wind cavity partition plate 103 is fixedly arranged between the front cross beam main body part 1011 and the rear cross beam main body part 1021, the wind cavity partition plate 103 is perpendicular to the front cross beam main body part 1011 and the rear cross beam main body part 1021, and the front side and the rear side of the wind cavity partition plate 103 are fixedly connected with the front cross beam main body part 1011 and the rear cross beam main body part 1021 respectively. Referring to fig. 2 and 3, the air chamber partition 103 includes an air chamber partition body 1031, the air chamber partition body 1031 is perpendicular to the front beam main body portion 1011 and the rear beam main body portion 1021, and a cold air chamber blocking plate 1032 and a cold air chamber connector 1033 are disposed at two ends of the air chamber partition body 1031. The wind chamber floor 7 is disposed at the bottom of the front and rear cross members 101, 102 and the front and rear cross member lower extensions 1013, 1023 are fixedly connected to the wind chamber floor 7. The right end of the cold air cavity blocking plate 1032 is connected with the left end of the air cavity partition plate body 1031, the left end of the cold air cavity blocking plate 1032 is fixedly connected with the air cavity bottom plate 7, and the front side and the rear side of the cold air cavity blocking plate 1032 are fixedly connected with the front cross beam main body part 1011 and the rear cross beam main body part 1021 respectively, so that the cold air cavity blocking plate 1032 seals the end part of one end of the hot air cavity 3; the cold air cavity joint 1033 and the cold air cavity joint 1033 are obliquely arranged, the left end of the cold air cavity joint 1033 is fixedly connected with the right end of the air cavity partition plate body 1031, the right end of the cold air cavity joint 1033 is fixedly connected with the bottom of the fixing plate 5, and in addition, the front side and the rear side of the cold air cavity joint 1033 are fixedly connected with the front cross beam main body part 1011 and the rear cross beam main body part 1021 respectively; when the equipment bracket 2 is installed on the air chamber shelf 1 through the countersunk bolt 6, the side of the equipment bracket bottom plate 201 abuts against the fixing plate 5, so that the end of the cold air chamber 4 corresponding to the fixing plate 5 is sealed under the combined action of the bracket bottom plate 201, the cold air chamber connector 1033 and the fixing plate 5. The cold air cavity 4 and the end far away from the fixed plate 5 are a cold air cavity inlet, the aircraft environment-controlled cold air output end is connected with the cold air cavity inlet, and the aircraft environment-controlled cold air enters the cold air cavity 4 through the cold air cavity inlet and then provides cold air for the second electronic equipment through the flow adjusting hole 204 on the equipment bracket 2, so that the second electronic equipment is cooled.
The air cavity bottom plate 7 is provided with a plurality of through holes, the air cavity shelf 1 is arranged above the first electronic equipment, one end of the hot air cavity 3, which is far away from the cold air cavity blocking plate 1032, is a hot air output port, the hot air output port is also connected with an exhaust device for pumping hot air in the hot air cavity 3 to the outside, hot air generated at the top of the first electronic equipment enters the hot air cavity 3 through the through holes on the air cavity bottom plate 7 and is pumped away through the hot air output port, the hot air is exhausted out of the air cavity structure, and the first electronic equipment is cooled; in addition, the hot air in the hot air chamber 3 is not diffused to the cold air chamber 4 by the air chamber partition plate 103.
The wind cavity shelf 1 is a carbon fiber composite wind cavity shelf, the wind cavity bottom plate 7 is a carbon fiber composite wind cavity bottom plate, the carbon fiber composite wind cavity shelf and the carbon fiber composite wind cavity bottom plate are both single composite parts, and the carbon fiber composite wind cavity shelf and the carbon fiber composite wind cavity bottom plate are cured and molded after being laminated by carbon fiber unidirectional tape prepreg; the air cavity shelf 1 and the air cavity bottom plate 7 select different types of carbon fiber materials and prepreg laying layer numbers according to stress conditions of different parts. The composite material wind cavity shelf selects corresponding carbon fiber unidirectional tape prepreg, reasonable ply number, ply angle, ply sequence and the like according to the stress condition of the composite material wind cavity shelf.
Referring to fig. 3, in the embodiment, a rack shelf 1 is shown, in which 180 ° cured interlayer toughened epoxy resin carbon fiber unidirectional tape prepreg is selected according to the stress condition, and the number of carbon fiber unidirectional tape layering layers is 12; the outer side of the equipment shelf 1 is connected with metal parts, so in order to prevent the corrosion of different electric potentials, the equipment shelf 1 needs to be connected with the metal parts according to the stress condition, the method comprises the steps of selecting 180-degree cured interlayer toughened epoxy resin carbon fiber unidirectional tape prepreg, laying a layer of glass fiber epoxy resin prepreg cured at the same temperature at the joint of the prepreg and metal, laying the composite air cavity shelf and the composite air cavity bottom plate on a mold by using the prepreg, feeding the composite air cavity shelf and the composite air cavity bottom plate into an autoclave for curing and forming after a closed space between the shelf and the bottom plate is filled into a vacuum bag, and using a special tool to manufacture countersunk bolt mounting holes connected with equipment brackets on front and rear beams after forming, so that the D size (the matching hole positions of the bracket and the front and rear beams) is ensured, and countersunk bolts 6 sequentially pass through the countersunk bolt mounting holes, so that the equipment brackets 2 are fixedly mounted on the air cavity shelf 1 through the matching of nuts with the matching after the mounting holes corresponding to the countersunk bolt mounting holes on the equipment shelf 1. In other embodiments of the invention, the temperature selection of the equipment shelf 1, the corresponding carbon fiber unidirectional tape prepreg, the reasonable number of the ply layers, the ply angle, the ply sequence and the like are selected according to the actual stress condition of the composite material wind cavity shelf.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art can make any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the present invention without departing from the scope of the present invention, and still fall within the scope of the present invention.
Claims (13)
1. The utility model provides an integral type combined material wind cavity structure which characterized in that: the hot air cavity comprises an air cavity shelf (1) and an air cavity bottom plate (7) arranged at the bottom of the air cavity shelf (1), wherein the air cavity shelf (1) is matched with the air cavity bottom plate (7) to form a hot air cavity (3), and the air cavity bottom plate (7) is connected with the air cavity shelf (1) by adopting a co-adhesive molding process; the top of the air chamber shelf (1) is provided with an equipment bracket (2), the air chamber shelf (1) is matched with the equipment bracket (2) to form a cold air chamber (4), and cold air in the cold air chamber (4) provides cold air for second electronic equipment installed on the equipment bracket (2).
2. A unitary composite wind cavity structure according to claim 1, wherein: wind chamber shelf (1) and wind chamber bottom plate (7) all adopt carbon-fibre composite, and carbon-fibre composite wind chamber shelf, carbon-fibre composite wind chamber bottom plate are single combined material finished piece, through the unidirectional preimpregnation material of taking of carbon fiber and spread the postcure shaping, wind chamber shelf and wind chamber bottom plate select different grade type carbon-fibre material and preimpregnation material to spread the layer number according to the different position atress condition.
3. A unitary composite wind cavity structure according to claim 1, wherein: the wind cavity shelf (1) comprises a front cross beam (101), a rear cross beam (102) and a wind cavity partition plate (103), the wind cavity partition plate (103) is arranged between the front cross beam (101) and the rear cross beam (102), the wind cavity partition plate (103) and the front cross beam (101) and the rear cross beam (102) are arranged integrally, and the front cross beam (101), the rear cross beam (102), the wind cavity partition plate (103) and a wind cavity bottom plate (7) form a hot wind cavity (3) together.
4. A unitary composite wind cavity structure according to claim 1, wherein: a plurality of through holes are formed in the air cavity bottom plate (7), the air cavity shelf (1) is arranged above the first electronic equipment, and heat generated above the first electronic equipment enters the hot air cavity (3) through the through holes in the air cavity bottom plate (7).
5. A unitary composite wind cavity structure according to claim 4, wherein: the front cross beam (101), the rear cross beam (102), the air cavity partition plate (103) and the equipment bracket (2) jointly form a cold air cavity (4), and the equipment bracket (2) is used as one part of an air cavity structure to enable the equipment bracket (2) and the air cavity structure to be integrated, so that the space is saved and the weight is reduced.
6. A unitary composite wind cavity structure according to claim 1, wherein: the equipment bracket 2 comprises an equipment bracket bottom plate (201) and an equipment bracket back plate (202) which are fixed together, and the front cross beam (101), the rear cross beam (102), the air cavity partition plate (103) and the equipment bracket bottom plate (201) jointly form a cold air cavity (4).
7. A unitary composite wind cavity structure according to claim 6, wherein: be provided with a plurality of flow control holes (204) on the equipment bracket bottom plate, second electronic equipment places the position that is located flow control hole (204) top on equipment bracket (2), and cold wind in cold wind chamber (4) passes through flow control hole (204) and provides cold wind to second electronic equipment.
8. A unitary composite wind cavity structure according to claim 5, wherein: the front cross beam (101) comprises a front cross beam main body part (1011), the top and the bottom of the front cross beam main body part (1011) bend towards the direction deviating from the rear cross beam (102) to form a front cross beam upper extending part (1012) and a front cross beam lower extending part (1013), and a plurality of first mounting holes are formed in the front cross beam upper extending part (1012); the rear cross beam (102) comprises a rear cross beam main body part (1021), the top and the bottom of the rear cross beam main body part (1021) are bent towards the direction departing from the front cross beam (101) to form a rear cross beam upper extension part (1022) and a rear cross beam lower extension part (1023), and a plurality of second mounting holes corresponding to the first mounting holes in the front cross beam upper extension part (1012) are formed in the rear cross beam upper extension part (1022).
9. A unitary composite wind cavity structure according to claim 6, wherein: a plurality of countersunk bolt mounting holes and first raised head bolt mounting holes are formed in the bottom plate (201) of the equipment bracket, the countersunk bolts penetrate through corresponding second mounting holes in the extending portion (1022) of the rear cross beam and then are matched with corresponding nuts, and the raised head bolts (8) penetrate through corresponding first mounting holes in the extending portion (1012) of the front cross beam and then are matched with corresponding nuts, so that the equipment bracket (2) is fixedly mounted on the air cavity shelf (1).
10. A unitary composite wind cavity structure according to claim 3, wherein: the wind cavity partition plate (103) comprises a wind cavity partition plate body (1031), the two ends of the wind cavity partition plate body (1031) are fixedly provided with a cold wind cavity blocking plate (1032) and a cold wind cavity joint (1033), and the cold wind cavity blocking plate (1032) is fixedly connected with a wind cavity bottom plate (7) to seal the end part of one end of the hot wind cavity (3) by one end of the wind cavity blocking plate (1032) far away from the wind cavity partition plate body and the cold wind cavity bottom plate (1032).
11. A unitary composite wind cavity structure according to claim 10, wherein: one end of the air chamber shelf (1) far away from the cold air chamber blocking plate (1032) faces away from the air chamber bottom plate (7) and is provided with a fixing plate (5), the bottom of the fixing plate (5) is fixedly connected with the cold air chamber connector (1033), when the equipment bracket (2) is installed on the air chamber shelf (1), the side of the equipment bracket bottom plate (201) is abutted to the fixing plate (5), and therefore the end of the air chamber (4) corresponding to the fixing plate (5) is sealed under the combined action of the bracket bottom plate (201), the cold air chamber connector (1033) and the fixing plate (5).
12. A unitary composite wind cavity structure according to claim 10, wherein: the cold air cavity (4) and the end far away from the fixed plate (5) are a cold air cavity inlet, the aircraft ring-controlled cold air output end is connected with the cold air cavity inlet, and the aircraft ring-controlled cold air enters the cold air cavity (4) through the cold air cavity inlet and then provides cold air for the second electronic equipment through the flow adjusting hole (204) in the equipment bracket (2), so that the second electronic equipment is cooled.
13. A unitary composite wind cavity structure according to claim 10, wherein: one end of the hot air cavity (3) far away from the cold air cavity blocking plate (1032) is a hot air outlet, the hot air outlet is also used for pumping hot air in the hot air cavity (3) to an external exhaust device, hot air generated at the top of the first electronic device enters the hot air cavity (3) through a through hole in the air cavity bottom plate (7) and is pumped away through the hot air outlet, the exhaust air cavity structure is external, the first electronic device is cooled, and hot air in the hot air cavity (3) can not be diffused to the cold air cavity (4) under the action of the air cavity partition plate (103).
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| CN202111435548.5A CN114056579A (en) | 2021-11-29 | 2021-11-29 | Integral composite material air cavity structure |
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| CN202111435548.5A CN114056579A (en) | 2021-11-29 | 2021-11-29 | Integral composite material air cavity structure |
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