CN205203404U - Auxiliary power device exhaust cabin ventilating and cooling structure - Google Patents
Auxiliary power device exhaust cabin ventilating and cooling structure Download PDFInfo
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- CN205203404U CN205203404U CN201521034840.6U CN201521034840U CN205203404U CN 205203404 U CN205203404 U CN 205203404U CN 201521034840 U CN201521034840 U CN 201521034840U CN 205203404 U CN205203404 U CN 205203404U
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- exhaust
- cabin
- outer tube
- auxiliary power
- exhaust cabin
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Abstract
The utility model discloses an auxiliary power device exhaust cabin ventilating and cooling structure, including shutter, exhaust inner tube, exhaust outer tube, exhaust cabin and kuppe, the bulkhead in exhaust cabin is located to the shutter, still is equipped with the opening on the bulkhead of exhaust cabin, and exhaust under -deck portion is all arranged in to exhaust inner tube, exhaust outer tube, and the inlet end of exhaust inner tube is fixed in the auxiliary power device, and the end of giving vent to anger of exhaust inner tube stretches into the outer inside of exhaust, and the end of giving vent to anger of exhaust outer tube is fixed in the opening part, fixed the being equipped with kuppe in the opening outside in the exhaust cabin. Through the utility model discloses a ventilating and cooling structure, air current are passed through the shutter and are got into the exhaust cabin, later flow out along exhaust inner tube and the gap between the exhaust outer tube, both having played the effect of cooling exhaust inner tube, can take away the steam of the under -deck that exhausts again, and the air current is when flowing out exhaust cabin opening, and class smooth outflow because the effect of kuppe can be lost one's temper, has improved the life of aircraft structure and under -deck spare part at the effectual radiating efficiency that improves the under -deck that exhausts.
Description
Technical field
The utility model belongs to aeronautic structure field, particularly relates to a kind of auxiliary power unit exhaust cabin ventilation cooling structure.
Background technology
On large and medium-sized aircraft and on big payload helicopter, in order to reduce the dependence to ground (airport) power equipment supply, independently miniature power unit is all housed, be called auxiliary power unit (AuxiliaryPowerUnit, be called for short APU), the effect of APU provides electric power and pressurized air independently to aircraft, also has a small amount of APU can provide additional thrust to aircraft.In typical gas turbine APU installs, APU is contained in fuselage compartment.In this fuselage compartment guard shield, all heat can be given out with other thermals source from the surface of driving engine, as motor oil radiator, electrical generator and freeing pipe etc., these heats produce significant impact by the in-use performance of other parts in Aircraft Structural Life and cabin.Therefore need to carry out cooling down by exhaust cabin, existing APU exhaust cabin ventilation cooling structure cannot meet cooling requirements.
Utility model content
The purpose of this utility model is to provide a kind of auxiliary power unit exhaust cabin ventilation cooling structure, low in order to solve current APU exhaust cabin ventilating and cooling efficiency, cannot meet the problem of cooling requirements.
For achieving the above object, the technical solution adopted in the utility model is: a kind of auxiliary power unit exhaust cabin ventilation cooling structure, comprises pipe in air inlet louvers, exhaust, exhaust outer tube, exhaust cabin and streamlined reefer housing,
The bulkhead of described exhaust cabin is located at by described louver, described exhaust cabin bulkhead is also provided with opening, in described exhaust, pipe, exhaust outer tube are all placed in exhaust cabin inside, in described exhaust, the inlet end of pipe is fixed on auxiliary power unit, in described exhaust, the inside of described exhaust outer tube is stretched in the outlet side of pipe, described opening part is fixed in the outlet side of described exhaust outer tube, there is gap that air-flow can be made to pass through between pipe and described exhaust outer tube in described exhaust, be fixed with streamlined reefer housing at the open outside of described exhaust cabin.
Further, described streamlined reefer housing and described exhaust cabin are integral structure or split-type structural.
Further, when adopting described split-type structural, described streamlined reefer housing and described exhaust cabin adopt rivet interlacement.
Further, described streamlined reefer housing is cylinder type.
Auxiliary power unit exhaust cabin ventilation cooling structure of the present utility model, air-flow enters exhaust cabin by louver, gap afterwards in exhaust between pipe and exhaust outer tube is flowed out, both the effect of pipe in cooling exhaust had been played, hot gas in exhaust cabin can be taken away again, air-flow, when flowing out exhaust cabin opening, because the effect of streamlined reefer housing can make air-flow steadily flow out, effectively raises the radiating efficiency in exhaust cabin, improves the service life of parts in aircaft configuration and cabin.
Accompanying drawing explanation
Accompanying drawing to be herein merged in specification sheets and to form the part of this specification sheets, shows and meets embodiment of the present utility model, and is used from specification sheets one and explains principle of the present utility model.
Fig. 1 is the structural representation according to auxiliary power unit exhaust cabin ventilation cooling structure of the present utility model.
Wherein, 1 is louver, and 2 is pipes in exhaust, and 3 is exhaust outer tubes, and 4 is exhaust cabin, and 5 is streamlined reefer housings.
Detailed description of the invention
The object implemented for making the utility model, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, are further described in more detail the technical scheme in the utility model embodiment.In the accompanying drawings, same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Described embodiment is the utility model part embodiment, instead of whole embodiments.Be exemplary type below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creation type work prerequisite, all belong to the scope of the utility model protection.Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore the restriction to the utility model protection domain can not be interpreted as.
As shown in Figure 1, a kind of auxiliary power unit exhaust cabin of the present utility model comprises pipe 2 in air inlet louvers 1, exhaust, exhaust outer tube 3, exhaust cabin 4 and streamlined reefer housing 5,
Louver 1 is arranged on the lower bulkhead of exhaust cabin 4, in exhaust cabin 4, bulkhead is also provided with opening, the interior pipe 2 of exhaust, exhaust outer tube 3 are all placed in the inside of exhaust cabin 4, in exhaust, the inlet end of pipe 2 is fixed on auxiliary power unit, in exhaust, the inside of exhaust outer tube 3 is stretched in the outlet side of pipe 2, opening part is fixed in the outlet side of exhaust outer tube 3, also has gap to make airflow, be fixedly connected with streamlined reefer housing 5 at the open outside of exhaust cabin 4 in exhaust between pipe, exhaust outer tube.
Be understandable that, streamlined reefer housing 5 and exhaust cabin 4 are integral structure or split-type structural, but what the utility model adopted is split-type structural, be fixedly connected with rivet between streamlined reefer housing 5 and exhaust cabin 4, the replacing for convenience detach of this split-type structural, only needs when streamlined reefer housing 5 damages to change streamlined reefer housing 5.The shape of the streamlined reefer housing 5 that the utility model adopts is cylindrical shape thin-wall constructions, can certainly be square thin-wall construction or other shapes.
Carrying out elaboration the utility model in work below in conjunction with Fig. 1 is principle.When reality uses, APU is divided into work two kinds of situations in surface work and APU aloft.
APU, when surface work, discharges high energy and high speed main flow from APU body, and high energy and high speed main flow pipe 2 in exhaust enters exhaust outer tube 3, and the opening part being provided with streamlined reefer housing 5 afterwards from exhaust cabin 4 top flows out aircraft machine.The outlet place of pipe 2 in exhaust, due to the viscous effect of gas, high speed high energy main flow drives the air-flow at gap place between pipe 2 and exhaust outer tube 3 in exhaust to flow along with main flow, and the gas in the exhaust cabin 4 of APU then enters from louver 1, inner in order to supplementary exhaust cabin 4.Air-flow enters exhaust cabin 4 from louver 1, gap in exhaust between pipe 2 and exhaust outer tube 3 is flowed out, finally flow out from the opening part of bulkhead exhaust cabin 4, define a complete airflow route, air current flow is lowered the temperature to pipe 2 in exhaust, and the gas of exhaust cabin 4 inside is exchanged, exhaust cabin 4 is also remained in certain temperature range, thus reaches the effect of cooling.
When APU aloft works, air flow direction and APU flow to consistent when surface work, but aloft fly due to aircraft, and the air-flow outside exhaust cabin 4 can produce punching press effect at louver 1 place, increases air-flow enters exhaust cabin 4 suction quantity from louver 1.When discharging aircraft machine and being outer, owing to being provided with streamlined reefer housing 5, streamlined reefer housing 5 can be walked around by the extra-organismal air-flow of vector aircraft, thus in generation meiobar, exit, prevent APU exhaust airstream pipe 2, exhaust outer tube 3 in exhaust from when flowing to opening part, pouring in down a chimney back pipe 2 in exhaust outer tube 3 and exhaust from opening.
The working process that when APU aloft works, air flow direction is concrete is, discharges high energy and high speed main flow from APU body, and high energy and high speed main flow pipe 2 in exhaust enters exhaust outer tube 3, and the opening part being provided with streamlined reefer housing 5 afterwards from exhaust cabin 4 top flows out aircraft machine.The outlet place of pipe 2 in exhaust, due to the viscous effect of gas, high energy and high speed main flow drives the gas at gap place between pipe 2 and exhaust outer tube 3 in exhaust to flow along with main flow, in addition also because aircraft is high-speed flight, extra-organismal air-flow can produce punching press effect at louver 1 place, increase the suction quantity that gas enters exhaust cabin 4, can produce high pressure in exhaust cabin 4 inside impel the gap of gas in exhaust between pipe 2 and exhaust outer tube 3 to flow out, under the viscosity of gas and the punching press double action of the outer gas of body, the circulation of air-flow in exhaust cabin 4 can be accelerated, improve the cooling effectiveness of APU freeing pipe and the circulating rate of exhaust cabin 4 internal gas flow.When last air-flow flows to the streamlined reefer housing 5 of exhaust cabin 4 opening part, air-flow is had because aircraft high-speed flight opportunity is external, streamlined reefer housing 5 understands the flowing of the external air-flow of vectoring aircraft thus in generation meiobar, exit, actv. prevents APU exhaust airstream from pouring in down a chimney back in exhaust cabin 4 and prevents the outer air-flow of body from flowing into.
Auxiliary power unit exhaust cabin ventilation cooling structure of the present utility model, the viscous effect of gas is utilized to make main flow drive the circulation of the gas in exhaust cabin 4 to dispel the heat to APU freeing pipe, enable air-flow flow into exhaust cabin 4 must to supplement and form complete airflow path by being provided with louver 1 at exhaust cabin 4 bulkhead, be provided with air-flow when streamlined reefer housing 5 makes aircraft high-speed flight in exhaust ports again and be unlikely to pour in down a chimney.Adopt the technical solution of the utility model that the temperature in APU freeing pipe and exhaust cabin 4 is dispelled the heat, improve radiating efficiency significantly, aircaft configuration and part life are improved.
The above; be only optimum detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (4)
1. an auxiliary power unit exhaust cabin ventilation cooling structure, is characterized in that, comprises pipe (2), exhaust outer tube (3), exhaust cabin (4) and streamlined reefer housing (5) in louver (1), exhaust,
The bulkhead of described exhaust cabin (4) is located at by described louver (1), described exhaust cabin (4) bulkhead is also provided with opening, pipe (2) in described exhaust, it is inner that exhaust outer tube (3) is all placed in exhaust cabin (4), in described exhaust, the inlet end of pipe (2) is fixed on auxiliary power unit, in described exhaust, the inside of described exhaust outer tube (3) is stretched in the outlet side of pipe (2), described opening part is fixed in the outlet side of described exhaust outer tube (3), there is gap that air-flow can be made to pass through between pipe (2) and described exhaust outer tube (3) in described exhaust, streamlined reefer housing (5) is fixed with at the open outside of described exhaust cabin (4).
2. auxiliary power unit exhaust cabin ventilation cooling structure according to claim 1, is characterized in that, described streamlined reefer housing (5) and described exhaust cabin (4) are integral structure or split-type structural.
3. auxiliary power unit exhaust cabin ventilation cooling structure according to claim 2, is characterized in that, when adopting described split-type structural, described streamlined reefer housing (5) and described exhaust cabin (4) adopt rivet interlacement.
4. auxiliary power unit exhaust cabin ventilation cooling structure according to claim 3, is characterized in that, described streamlined reefer housing (5) is cylinder type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521034840.6U CN205203404U (en) | 2015-12-11 | 2015-12-11 | Auxiliary power device exhaust cabin ventilating and cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521034840.6U CN205203404U (en) | 2015-12-11 | 2015-12-11 | Auxiliary power device exhaust cabin ventilating and cooling structure |
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| Publication Number | Publication Date |
|---|---|
| CN205203404U true CN205203404U (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521034840.6U Active CN205203404U (en) | 2015-12-11 | 2015-12-11 | Auxiliary power device exhaust cabin ventilating and cooling structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482796A (en) * | 2021-06-01 | 2021-10-08 | 中国航空工业集团公司沈阳飞机设计研究所 | Spray pipe configuration of rib structure of discontinuous mixed support plate |
| CN113911376A (en) * | 2021-11-19 | 2022-01-11 | 中国直升机设计研究所 | Method for controlling air volume of fan of comprehensive heat dissipation system of heavy helicopter |
-
2015
- 2015-12-11 CN CN201521034840.6U patent/CN205203404U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482796A (en) * | 2021-06-01 | 2021-10-08 | 中国航空工业集团公司沈阳飞机设计研究所 | Spray pipe configuration of rib structure of discontinuous mixed support plate |
| CN113482796B (en) * | 2021-06-01 | 2022-09-20 | 中国航空工业集团公司沈阳飞机设计研究所 | Spray pipe configuration of rib structure of discontinuous mixed support plate |
| CN113911376A (en) * | 2021-11-19 | 2022-01-11 | 中国直升机设计研究所 | Method for controlling air volume of fan of comprehensive heat dissipation system of heavy helicopter |
| CN113911376B (en) * | 2021-11-19 | 2023-04-21 | 中国直升机设计研究所 | Fan air quantity control method for comprehensive heat dissipation system of heavy helicopter |
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