CN113086224B - Equipment fixing heat bridge restraines structure - Google Patents
Equipment fixing heat bridge restraines structure Download PDFInfo
- Publication number
- CN113086224B CN113086224B CN202110283426.2A CN202110283426A CN113086224B CN 113086224 B CN113086224 B CN 113086224B CN 202110283426 A CN202110283426 A CN 202110283426A CN 113086224 B CN113086224 B CN 113086224B
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- equipment
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- shell
- support leg
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D47/00—Equipment not otherwise provided for
Abstract
The invention provides an equipment installation heat bridge inhibition structure, equipment is installed in a suspension mode through a switching lug arranged on an equipment shell, the switching lug is connected with the top of an installation support leg through a connecting screw, the installation support leg is installed in a heat protection structure of the equipment cabin shell, the bottom of the installation support leg is connected with the equipment cabin shell through a switching gasket, the installation support leg is of a hollow thin-wall structure, and pyrolysis materials are arranged in the inner area and the outer area of the installation support leg. The invention adopts a hollow structure mounting support leg and a suspension mounting mode, greatly reduces the heat transfer to the cabin and the equipment shell through the heat bridge, and realizes effective heat protection.
Description
Technical Field
The invention relates to an equipment installation heat bridge restraining structure, and belongs to the technical field of aircraft thermal structure connection.
Background
With the increasing flying speed of modern aircrafts, for aircrafts adopting thermal structures, cabin structures face harsh pneumatic heating environments, and cabin equipment mounting support legs are generally fixed on the cabin structures to form thermal bridges. The existence of the thermal bridge causes adverse effects on the thermal environment in the cabin due to the heat formation point in the cabin, and causes the temperature of the equipment shell to rise, thereby affecting the working reliability of the electronic equipment in the equipment.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides an equipment installation heat bridge inhibiting structure which can greatly reduce the heat transferred into a cabin and an equipment shell through a heat bridge, so that effective heat protection is realized.
The technical scheme of the invention is as follows: the utility model provides an equipment fixing heat bridge restraines structure, equipment is through the unsettled installation of switching auricle of setting on equipment shell, and the switching auricle passes through connecting screw to be connected with the top of installation stabilizer blade, and the installation stabilizer blade is installed inside equipment cabin casing thermal protection structure, and installation stabilizer blade bottom is connected with equipment cabin casing through the switching gasket, and the installation stabilizer blade is hollow structure's thin wall structure, sets up the pyrolysis material at the inside and outside region of installation stabilizer blade.
Compared with the prior art, the invention has the beneficial effects that:
(1) The invention adopts a hollow structure to install the support legs and a suspension installation mode, greatly reduces the heat transfer to the cabin and the equipment shell through a heat bridge, and realizes effective heat protection;
(2) The invention adopts the hollow structure to install the pyrolysis material inside and outside the support leg to absorb heat, and adopts the heat insulation pad to insulate heat and the multi-connection contact thermal resistance, thereby effectively reducing the heat transferred to the equipment and reducing the temperature of the equipment;
(3) The mounting support legs are positioned in the thermal protection structure of the equipment compartment shell, so that a thermal bridge is further inhibited, and heat transfer is reduced;
(4) The mounting support legs are welded on the equipment compartment shell through the adapter gaskets, and the thermal resistance is further increased through the adapter gaskets and the reduction of welding connection points.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Detailed Description
The present invention will be described in detail with reference to the following examples and accompanying drawings.
The invention provides an equipment installation heat bridge inhibition structure as shown in figure 1, equipment is installed in a suspended manner through a switching lug 11 arranged on an equipment shell 5, the switching lug 11 is connected with the top of an installation support leg 1 through a connecting screw 6, the installation support leg 1 is installed inside a thermal protection structure of the equipment cabin shell, the bottom of the installation support leg 1 is connected with an equipment cabin shell 8 through a switching gasket, the installation support leg 1 is a hollow thin-wall structure, and pyrolytic materials 4 are arranged in the installation support leg and in the external region.
The invention reduces the heat transfer area through the thermal bridge and the total heat transfer capacity through the thermal bridge through the mounting support legs with hollow structures. The heat transferred up through the feet is further absorbed by pyrolysing material in the inner and outer regions of the mounting feet. The installation stabilizer blade 1 is used for being connected with equipment through connecting screw, fixed equipment, and its top end face thickness satisfies and 6 joint strength demands of connecting screw.
The equipment is installed in a suspension manner, and the connection is realized only through the switching lug arranged on the equipment shell 5, so that the contact area is reduced, the heat conduction is reduced, and the influence of a heat bridge is reduced.
Preferably, the adapter gasket 7 is welded on the equipment compartment shell 8, the support legs 1 are welded on the adapter gasket 7, and when the adapter gasket is welded, welding connection points are reduced on the premise of ensuring the connection strength, and the thermal resistance is increased by the adapter gasket and the reduction of the welding connection points. The adapter washer 7 serves to increase the contact resistance and to reduce the heat entering the mounting foot 1 through the equipment bay housing 8.
Further preferably, the equipment compartment shell thermal protection structure is composed of a heat insulation layer 9 and a phase change heat absorption layer 10, and the equipment compartment shell thermal protection structure is laid on the equipment compartment shell 8, so that heat transmitted to the inside of the compartment through the equipment compartment shell is reduced. The heat insulation layer 9 is used for reducing heat entering the equipment compartment from the equipment compartment shell, and is generally made of heat insulation foam, ceramic tiles, aerogel and other materials; the phase-change heat absorption layer 10 is used for absorbing heat entering the cabin through the heat insulation layer and further reducing the heat entering the cabin, and the specific type of the phase-change material is determined according to the design requirement of the heat insulation.
Further, after the installation supporting leg 1 is fixed on the equipment compartment shell 8, the pyrolysis filler 4 is filled around the inside and the outside of the installation supporting leg 1, then the heat insulation layer 9 is laid on the equipment compartment shell 8, and the heat insulation layer 9 is leveled with the pyrolysis filler 4 outside the installation supporting leg 1 and is slightly higher than the upper end face of the installation supporting leg 1. The pyrolytic filler 4 is used for absorbing heat transferred into the cabin body through the equipment support legs in a pyrolytic way, and the specific type is determined according to the design requirement of heat insulation.
Further, a phase change heat absorption layer 10 is laid on the heat insulation layer 9 and the pyrolysis filler 4 outside the mounting support leg 1, and the phase change heat absorption layer 10 is slightly higher than the top end face of the mounting support leg 1.
Further, the heat insulation pad 2 is installed on the top end face of the installation leg 1, on one hand, the heat insulation pad 2 increases the contact thermal resistance, and on the other hand, the heat transferred to the adapter tab 11 through the installation leg 1 is reduced through the low thermal conductivity of the heat insulation pad 2 itself.
Further, the shock absorber 3 is installed at the connection interface of the switching lug 11 and the installation supporting leg 1, then the equipment together with the shock absorber 3 is installed on the installation supporting leg 1 on which the heat insulation pad 2 is placed, and finally the equipment is screwed and fastened with the installation supporting leg 1 through the connecting screw 6.
The heat insulation pad 2 separates the mounting support leg 1 from the shock absorber 3, so that heat on the mounting support leg 1 is reduced from entering the shock absorber and equipment; the heat insulating pad 2 is generally made of a heat insulating material such as silica ceramic material reinforced with quartz fibers.
The vibration damper 3 is used for damping vibration of equipment, isolating vibration and reducing the vibration magnitude of the equipment, and can adopt the existing products.
The invention has not been described in detail and is not limited thereto.
Claims (5)
1. An equipment installation heat bridge restraines structure which characterized in that: the equipment is installed in a suspended manner through the switching lug plates arranged on the equipment shell, the switching lug plates are connected with the tops of the installation support legs through connecting screws, the installation support legs are installed inside the thermal protection structure of the equipment cabin shell, the bottoms of the installation support legs are connected with the equipment cabin shell through switching gaskets, the installation support legs are of hollow thin-wall structures, and pyrolysis materials are arranged in the inner and outer regions of the installation support legs;
the equipment cabin shell heat protection structure consists of a heat insulation layer and a phase change heat absorption layer and is laid on the inner surface of the equipment cabin shell;
after the installation supporting legs are fixed on the equipment compartment shell, pyrolytic fillers are filled in the installation supporting legs and the periphery of the installation supporting legs, then the heat insulation layer is laid on the equipment compartment shell, the heat insulation layer is flush with the pyrolytic fillers outside the installation supporting legs and slightly higher than the upper end face of the installation supporting legs, and the phase change heat absorption layer is laid on the thermal insulation layer and the pyrolytic fillers outside the installation supporting legs.
2. An equipment installation thermal bridge suppression structure according to claim 1, wherein: the switching gasket is welded on the equipment compartment shell, and then the supporting legs are welded on the switching gasket.
3. An equipment installation thermal bridge suppression structure according to claim 1, wherein: and the heat insulation pad is arranged on the end surface of the top of the mounting support leg.
4. An equipment installation thermal bridge suppression structure according to claim 1, wherein: the connection interface of the switching lug and the mounting support leg is provided with a shock absorber, the equipment and the shock absorber are arranged on the mounting support leg on which the heat insulation pad is arranged, and finally the equipment and the mounting support leg are fastened through a connecting screw in a threaded connection mode.
5. An equipment installation thermal bridge suppression structure according to claim 1, wherein: the heat insulation layer is made of heat insulation foam, ceramic tiles and/or aerogel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110283426.2A CN113086224B (en) | 2021-03-17 | 2021-03-17 | Equipment fixing heat bridge restraines structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110283426.2A CN113086224B (en) | 2021-03-17 | 2021-03-17 | Equipment fixing heat bridge restraines structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113086224A CN113086224A (en) | 2021-07-09 |
| CN113086224B true CN113086224B (en) | 2023-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110283426.2A Active CN113086224B (en) | 2021-03-17 | 2021-03-17 | Equipment fixing heat bridge restraines structure |
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| CN (1) | CN113086224B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6497390B1 (en) * | 1999-09-23 | 2002-12-24 | Astrium Gmbh | Thermal protection system especially for space vehicles |
| CN106314758A (en) * | 2016-09-29 | 2017-01-11 | 湖北航天技术研究院总体设计所 | End cap heat resistance connecting device |
| CN107719631A (en) * | 2017-09-12 | 2018-02-23 | 江西洪都航空工业集团有限责任公司 | It is a kind of to collect thermal protection and the attachment structure of member installation one |
| CN207496915U (en) * | 2017-11-30 | 2018-06-15 | 江西洪都航空工业集团有限责任公司 | A kind of aircraft bay section outer heat shield structure |
| CN112399744A (en) * | 2020-11-10 | 2021-02-23 | 北京动力机械研究所 | Composite high-temperature-resistant heat-resistant support structure |
-
2021
- 2021-03-17 CN CN202110283426.2A patent/CN113086224B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6497390B1 (en) * | 1999-09-23 | 2002-12-24 | Astrium Gmbh | Thermal protection system especially for space vehicles |
| CN106314758A (en) * | 2016-09-29 | 2017-01-11 | 湖北航天技术研究院总体设计所 | End cap heat resistance connecting device |
| CN107719631A (en) * | 2017-09-12 | 2018-02-23 | 江西洪都航空工业集团有限责任公司 | It is a kind of to collect thermal protection and the attachment structure of member installation one |
| CN207496915U (en) * | 2017-11-30 | 2018-06-15 | 江西洪都航空工业集团有限责任公司 | A kind of aircraft bay section outer heat shield structure |
| CN112399744A (en) * | 2020-11-10 | 2021-02-23 | 北京动力机械研究所 | Composite high-temperature-resistant heat-resistant support structure |
Non-Patent Citations (2)
| Title |
|---|
| 热桥对矿难救生舱壳体传热性能的影响;鲁怀敏等;《煤矿安全》;20131020(第10期);全文 * |
| 高效相变蓄热装置结构设计及试验研究;王领华等;《航天器环境工程》;20171225(第06期);全文 * |
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|---|---|
| CN113086224A (en) | 2021-07-09 |
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