CN107063695A - A kind of aeroengine combustor buring room water-cooled casing reinforcement structure - Google Patents
A kind of aeroengine combustor buring room water-cooled casing reinforcement structure Download PDFInfo
- Publication number
- CN107063695A CN107063695A CN201611191436.9A CN201611191436A CN107063695A CN 107063695 A CN107063695 A CN 107063695A CN 201611191436 A CN201611191436 A CN 201611191436A CN 107063695 A CN107063695 A CN 107063695A
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- Prior art keywords
- casing
- wall
- connecting bolt
- diaphragm
- plate connecting
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
Abstract
A kind of aeroengine combustor buring room water-cooled casing reinforcement structure, including casing outer wall (1), casing inwall (2), diaphragm (3), diaphragm (3) is fixedly connected on casing inwall (2), water-cooling channel is formed between casing outer wall (1) and casing inwall (2), also include several doubling plate connecting bolts (4) and plate nut (5), the screw cap end of doubling plate connecting bolt (4) is fixedly connected on diaphragm (3) by mounting hole (A1) and formed on the whole with casing inwall (2), casing outer wall (1) is provided with several shoulder holes (A2), the doubling plate connecting bolt (4) passes from shoulder hole (A2), the plate nut (5) is tightened on the outside of casing outer wall (1) with doubling plate connecting bolt (4), so as to which casing outer wall (1) be fixedly connected with casing inwall (2).
Description
Technical field
Patent of the present invention is related to aero-engine field, relates generally to a kind of aeroengine combustor buring room water-cooled casing and adds
Strong structure.
Background technology
As aeroengine thrust is improved constantly, the gas flow of combustion chamber componentses is also continued to increase, domestic existing examination
Equipment is tested to be difficult to meet the combustor test under full flow state.In addition, considering from economy point, ground in combustion chamber componentses
In the stage processed, also tend to using interception combustor section feature structure, i.e., be tried using sector combustor simulation loopful combustion chamber
Test research.The effect of sector combustor both sides casing is to coordinate flange and fan-shaped casing cylinder to constitute complete burning gallery, no
Belong to combustion chamber features structure, therefore the protection of cooling gas in combustion chamber can not be obtained.For guarantee test safety, both sides casing leads to
It is standing to count into double panel structure, the purpose for reaching cooling both sides casing is flowed in doubling plate intercycle by cooling water, to carry
High heat convection effect, cooling water pressure is often several times as much as doubling plate external environment pressure.In addition, in doubling plate process,
The sealing effectiveness of doubling plate is even more examined by 1.5~2 times of cooling water pressure.So, in processing and real work,
Double panel structure can bear larger water pressure.
Current double panel structure is that do not have by welding between the hollow cooling duct formed, the inside and outside wall of doubling plate
It is fixedly connected.In high temperature, the use environment of high pressure, the weld seam for only relying on surrounding bears water pressure, by long-time work
After work, the deformation of " bulge " shape is also easy to produce in the middle part of doubling plate, there is also the risk that stress ftractures for commissure.In addition whole combustion chamber machine
The welding capacity of casket is larger, there is residual stress after welding, and residual stress distribution is uneven, and the intensity of doubling plate can be caused to be cut
It is weak, increase the probability and deformation extent of " bulge " shape deformation.Casing occurs after the deformation of " bulge " shape, will result directly in casing knot
Structure intensity can not meet design requirement, meanwhile, the water-cooling channel parameter in the middle of doubling plate will also change, and destroy original
Cooling Design is laid out, it would be possible to overheating problem caused by the local deficiency because of cooling of casing is occurred, is influenceed making for combustion box
Use security.
The content of the invention
The purpose of the present invention：Improved that there is provided one kind for existing aeroengine combustor buring room water-cooled case structure
Simple and reliable for structure, good manufacturability water-cooled casing reinforcement structure.The structure design is compact, to existing water-cooled casing knot
Structure and Cooling Design influence of arrangement are smaller.By strengthened water-cooled casing, casing can be effectively controlled to be used in high temperature, high pressure
Deformation in environment, improves the reliability and safety in utilization of casing.
Technical solution of the present invention：A kind of aeroengine combustor buring room water-cooled casing reinforcement structure, including casing outer wall 1,
Casing inwall 2, diaphragm 3, diaphragm 3 are fixedly connected on casing inwall 2, between casing outer wall 1 and casing inwall 2
Water-cooling channel, in addition to several doubling plate connecting bolts 4 and plate nut 5 are formed, the screw cap end of doubling plate connecting bolt 4 is led to
Cross mounting hole A1 and be fixedly connected on diaphragm 3 and the formation of casing inwall 2 on the whole, casing outer wall 1 is provided with several ranks
Terraced hole A2, the doubling plate connecting bolt 4 is passed from shoulder hole A2, and the plate nut 5 is in the outside of casing outer wall 1 and doubling plate
Connecting bolt 4 is tightened, so that casing outer wall 1 be fixedly connected with casing inwall 2.
A kind of described aeroengine combustor buring room water-cooled casing reinforcement structure, the doubling plate connecting bolt 4 and support
The screw thread pair that crab bolt 5 is constituted passes through welded seal.
A kind of described aeroengine combustor buring room water-cooled casing reinforcement structure, the spiral shell of the doubling plate connecting bolt 4
Cap end is fixedly connected on diaphragm 3 by mounting hole A1, screw cap end upper surface and the upper surface flush of diaphragm 3, casing
Outer wall 1 is provided with several shoulder holes A2 at the position contacted with diaphragm 3.
A kind of described aeroengine combustor buring room water-cooled casing reinforcement structure, the spiral shell of the doubling plate connecting bolt 4
Cap end is fixedly connected on casing inwall 2 by mounting hole A1, nut section upper surface and the upper surface flush of diaphragm 3.
A kind of described aeroengine combustor buring room water-cooled casing reinforcement structure, casing outer wall 1 is provided with several ranks
Terraced hole A2, the agent structure of the plate nut 5 is fang platform, and it is round pallet below tapped blind hole, fang platform that centre, which is,
Flange, after nut is installed in place, supporting plate flange is caught in the shoulder hole A2 of casing outer wall 1.
Described a kind of aeroengine combustor buring room water-cooled casing reinforcement structure, by doubling plate connecting bolt 4 and supporting plate
The screw thread pair " tie point " that nut 5 is constituted is formed according to " matrix form " arrangement, and arrangement should be encrypted in casing central region.
The beneficial effects of the invention are as follows：
1, by increasing doubling plate connecting bolt and plate nut, forms screw thread pair connection, makes the inside and outside wall of doubling plate mutual
Support, improves the bearing capacity of water-cooled casing double panel structure, reduces the stress level of doubling plate circumferential weld, improves
The reliability of casing；
2 reinforcement structures can effectively control the deformation of doubling plate, make the cooling duct type face parameter in the middle of doubling plate with setting
Evaluation is consistent, so as to ensure that casing can be winding is effectively cooled according to design expectation, improves casing in use
Security；
3 carry out structure optimization on existing water-cooled case structure, to existing case structure and Cooling Design result shadow
Sound is smaller, reduces technical risk；
4 doubling plate connecting bolts and plate nut are simple in construction, and added parts quantity is few, assembling and good manufacturability.Plus
Work cost is compared to original water-cooled case structure without obvious increase.The quantity of doubling plate connecting bolt and plate nut, distribution
Method and the big I of screw thread pair are designed according to the actual requirements, and the limitation of Curve guide impeller is few.
Brief description of the drawings
Fig. 1 is current combustion room water-cooled case structure schematic diagram, description casing outer wall 1, casing inwall 2, diaphragm
3rd, the relative position relation of water inlet tap 6 and faucet 7, and flow of cooling water direction；
Fig. 2 is water-cooled casing reinforcement structure schematic diagram, and description is by casing outer wall 1, casing inwall 2, diaphragm 3, double
The principle for the water-cooled casing reinforcement structure that laminate connecting bolt 4 and plate nut 5 are constituted；
Fig. 3 is water-cooled casing reinforcement structure exploded view, description casing outer wall 1, casing inwall 2, diaphragm 3, bilayer
The assembly relation of plate connecting bolt 4 and plate nut 5；
Fig. 4 is screw thread pair " tie point " distribution schematic diagram on water-cooled casing, and description is by doubling plate connecting bolt 4 and support
Distribution scheme of the screw thread pair " tie point " that crab bolt 5 is constituted on water-cooled casing surface；
Fig. 5 is the structural representation of doubling plate connecting bolt 4, and the concrete structure and composition of description doubling plate connecting bolt 4 will
Element；
Fig. 6 is the structural representation of plate nut 5, describes the concrete structure and element of plate nut 5.
Embodiment
Below in conjunction with the accompanying drawings and the present invention is discussed in detail in specific embodiment.
Refering to Fig. 1, existing combustion chamber water-cooled casing includes casing outer wall 1, casing inwall 2, diaphragm 3, water inlet tap 6
With faucet 7.Casing outer wall 1 and casing inwall 2 are welded along surrounding, form cavity；Diaphragm 3 is spaced apart, with machine
Casket inwall 2 forms the water-cooling channel of " N fonts " by welding or global formation one entirety of formation；Water inlet tap 6 and faucet
7 are separately fixed at the lower right corner and the upper left corner of casing outer wall 1.During combustion chamber operational, it is empty that cooling water enters cooling from water inlet tap 6
Chamber, along the flowing of " N fonts " water-cooling channel, finally flows out from faucet 7, by the continuous fluid interchange of cooling water, reaches cooling
The purpose of casing.
Refering to Fig. 2, combustion chamber water-cooled casing reinforcement structure includes casing outer wall 1, casing inwall 2, diaphragm 3, double
Laminate connecting bolt 4 and plate nut 5.Compared with existing combustion chamber water-cooled casing, in casing inwall 2 and the shape of diaphragm 3
Into the hole depth that adds on the whole be the mounting hole A1 that H1, aperture are D1, and the correspondence position on casing outer wall 1 is added
The shoulder hole A2 that greatly/small-bore is respectively D3/D4, macropore hole depth is H2.Mounting hole A1 is used to doubling plate connection spiral shell is fixedly mounted
Bolt 4.Doubling plate connecting bolt 4 is passed from shoulder hole A2, and plate nut 5 is twisted in the outside of casing outer wall 1 with doubling plate connecting bolt 4
It is tight to form screw thread pair, and be connected by welding, sealed with casing outer wall 1, make casing outer wall 1 and the interconnection of casing inwall 2 and
Support.To ensure that screw thread pair has enough pretightning forces, screw thread pair diameter typically chooses 5~8mm, and at least 3~5 complete spiral shells of button
Line is connected.
In addition, when mounting hole A1 hole depths H1 and shoulder hole A2 macropore hole depth H2 choosing values, on the one hand to meet doubling plate connection
The assembling positioning of bolt 4 and plate nut 5, on the other hand will also ensure that the welding of doubling plate connecting bolt 4 and plate nut 5 is strong
Degree.
Refering to Fig. 3, combustion chamber water-cooled casing reinforcement structure includes casing outer wall 1, casing inwall 2, diaphragm 3, double
Laminate connecting bolt 4 and plate nut 5.In an assembling process, the screw cap end of doubling plate connecting bolt 4 is stably placed at peace first
Fill in the A1 of hole, and welded on nut periphery, be fixed on it and be made up of on the whole casing inwall 2 and diaphragm 3；Again
Casing outer wall 1 and casing inwall 2 are welded into double panel structure by four sides, and make doubling plate connecting bolt 4 outside casing
Shoulder hole A2 on wall 1 is passed；Finally plate nut 5 is tightened from outside with doubling plate connecting bolt 4, and in plate nut 5
Supporting plate flange periphery welded seal.
Refering to Fig. 4, combustion chamber water-cooled casing reinforcement structure be by multiple screw thread pairs " tie point " as shown in Figure 2 according to
" matrix form " arrangement is formed.The line number N1, line space C1, columns N2 and column pitch C2 of " matrix form " arrangement should make overall plans welding
The factors such as deflection, manufacture difficulty and doubling plate deflection, for the casing central region that deflection is larger, should encrypt cloth
Put.
In addition, with reference to being actually needed for mounting hole A1 is opened up, spacer width B can be opened up correspondence position on diaphragm 3
A width of diameter D6 bolt mounting seat, D6 values be difficult it is excessive, to reduce the influence to former Cooling Design.Bolt mounting seat is with leading
Transition, switching radius of corner R ≮ 2mm are carried out by fillet of transferring between stream dividing plate.
Refering to Fig. 5, doubling plate connecting bolt 4 is " T " font, and head diameter D2 matches with diameter of thread M1, typically may be used
Choose 8~12mm.To ensure that doubling plate connecting bolt 4 is smoothly assembled, head diameter D2 and mounting hole A1 aperture D1 will be matched and set
Meter.In order to not influence the assembling of casing outer wall 1 and casing inwall 2, nut upper surface is no more than the upper surface of diaphragm 3.
Refering to Fig. 6, the agent structure of plate nut 5 is the fang platform that lower section is L with round pallet flange, the length of side, is easy to assembling
Operation.Tapped blind hole, the diameter of thread M1 of diameter of thread M2=doubling plates connecting bolt 4 are provided with the middle of fang platform.To ensure
Plate nut 5 is smoothly assembled, and supporting plate flange diameter D5 and shoulder hole A2 aperture D3 want matched design.
Claims (6)
1. a kind of aeroengine combustor buring room water-cooled casing reinforcement structure, including casing outer wall (1), casing inwall (2), water conservancy diversion
Dividing plate (3), diaphragm (3) is fixedly connected on casing inwall (2), is formed between casing outer wall (1) and casing inwall (2)
Water-cooling channel, it is characterised in that also including several doubling plate connecting bolts (4) and plate nut (5), doubling plate connecting bolt
(4) screw cap end is fixedly connected on diaphragm (3) by mounting hole (A1) and formed on the whole with casing inwall (2), casing
Outer wall (1) is provided with several shoulder holes (A2), and the doubling plate connecting bolt (4) passes from shoulder hole (A2), the supporting plate
Nut (5) is tightened with doubling plate connecting bolt (4) on the outside of the casing outer wall (1), so that by casing outer wall (1) and casing inwall
(2) it is fixedly connected.
2. a kind of aeroengine combustor buring room water-cooled casing reinforcement structure according to claim 1, it is characterised in that institute
The screw thread pair for stating doubling plate connecting bolt (4) and plate nut (5) composition passes through welded seal.
3. a kind of aeroengine combustor buring room water-cooled casing reinforcement structure according to claim 1, it is characterised in that institute
The screw cap end for stating doubling plate connecting bolt (4) is fixedly connected on diaphragm (3) by mounting hole (A1), screw cap end upper surface
With diaphragm (3) upper surface flush, casing outer wall (1) is provided with several shoulder holes at the position contacted with diaphragm (3)
(A2)。
4. a kind of aeroengine combustor buring room water-cooled casing reinforcement structure according to claim 1, it is characterised in that institute
The screw cap end for stating doubling plate connecting bolt (4) is fixedly connected on casing inwall (2) by mounting hole (A1), nut section upper surface
With diaphragm (3) upper surface flush.
5. a kind of aeroengine combustor buring room water-cooled casing reinforcement structure according to claim 1, it is characterised in that machine
Casket outer wall (1) is provided with several shoulder holes (A2), and the agent structure of the plate nut (5) is fang platform, and centre is with interior spiral shell
It is round pallet flange below the blind hole of line, fang platform, after nut is installed in place, supporting plate flange is caught in the ladder of casing outer wall (1)
In hole (A2).
6. a kind of aeroengine combustor buring room water-cooled casing reinforcement structure according to claim 1, it is characterised in that by
The screw thread pair " tie point " that doubling plate connecting bolt (4) and plate nut (5) are constituted is formed according to " matrix form " arrangement, in casing
Central region should encrypt arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611191436.9A CN107063695A (en) | 2017-04-26 | 2017-04-26 | A kind of aeroengine combustor buring room water-cooled casing reinforcement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611191436.9A CN107063695A (en) | 2017-04-26 | 2017-04-26 | A kind of aeroengine combustor buring room water-cooled casing reinforcement structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107063695A true CN107063695A (en) | 2017-08-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611191436.9A Pending CN107063695A (en) | 2017-04-26 | 2017-04-26 | A kind of aeroengine combustor buring room water-cooled casing reinforcement structure |
Country Status (1)
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| CN (1) | CN107063695A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102023091A (en) * | 2010-10-22 | 2011-04-20 | 中国南方航空工业(集团)有限公司 | Aircraft engine casing static test method and testing assembly thereof |
| CN103592111A (en) * | 2013-10-29 | 2014-02-19 | 无锡市海航电液伺服系统有限公司 | Simulation load balancing method and device for aircraft engine crankcase strength tests |
| CN105317556A (en) * | 2014-12-04 | 2016-02-10 | 中国航空工业集团公司沈阳发动机设计研究所 | High-temperature-resistant casing structure used for aero-engine |
| CN105486508A (en) * | 2015-11-23 | 2016-04-13 | 成都发动机（集团）有限公司 | Hydraulic test device for detachable housing of combustion chamber case of aeroengine |
| CN105547702A (en) * | 2015-12-10 | 2016-05-04 | 中国飞机强度研究所 | High-temperature and high-voltage testing device for engine case |
| CN106289734A (en) * | 2016-07-21 | 2017-01-04 | 浙江大学 | A kind of aero-engine casing high temperature containment test technology |
-
2017
- 2017-04-26 CN CN201611191436.9A patent/CN107063695A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102023091A (en) * | 2010-10-22 | 2011-04-20 | 中国南方航空工业(集团)有限公司 | Aircraft engine casing static test method and testing assembly thereof |
| CN103592111A (en) * | 2013-10-29 | 2014-02-19 | 无锡市海航电液伺服系统有限公司 | Simulation load balancing method and device for aircraft engine crankcase strength tests |
| CN105317556A (en) * | 2014-12-04 | 2016-02-10 | 中国航空工业集团公司沈阳发动机设计研究所 | High-temperature-resistant casing structure used for aero-engine |
| CN105486508A (en) * | 2015-11-23 | 2016-04-13 | 成都发动机（集团）有限公司 | Hydraulic test device for detachable housing of combustion chamber case of aeroengine |
| CN105547702A (en) * | 2015-12-10 | 2016-05-04 | 中国飞机强度研究所 | High-temperature and high-voltage testing device for engine case |
| CN106289734A (en) * | 2016-07-21 | 2017-01-04 | 浙江大学 | A kind of aero-engine casing high temperature containment test technology |
Non-Patent Citations (2)
| Title |
|---|
| 丁发军: "《航空活塞发动机及其修理技术》", 31 January 2015, 西南交通大学出版社 * |
| 航空航天工业部高效节能发动机文集编委会: "《高效节能发动机文集 第4分册 燃烧室设计与试验》", 31 December 1991 * |
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Application publication date: 20170818 |