CN107605604A - It is a kind of be suitable for the non-coordinating thermal deformation of inner and outer ring casing obturage and auxiliary location structure - Google Patents
It is a kind of be suitable for the non-coordinating thermal deformation of inner and outer ring casing obturage and auxiliary location structure Download PDFInfo
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- CN107605604A CN107605604A CN201710830857.XA CN201710830857A CN107605604A CN 107605604 A CN107605604 A CN 107605604A CN 201710830857 A CN201710830857 A CN 201710830857A CN 107605604 A CN107605604 A CN 107605604A
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- casing
- flexible part
- lightweight flexible
- outer shroud
- structural member
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Abstract
The present invention relates to it is a kind of can be applied to the fields such as ground gas turbine, aero-engine be suitable for the non-coordinating thermal deformation of inner and outer ring casing obturage and auxiliary location structure, by the cold conditions interference setting lightweight flexible part between the mounting hole of structural member and outer shroud casing, the uncoordinated real work state of inner and outer ring difference casing thermal deformation is adapted to.In addition, the material of lightweight flexible part is chosen in view of the structure, therefore typically used in low temperature environment, lightweight flexible part obturages the magnitude of interference formed under mating surface confined state with object part can also realize that the auxiliary positioning of insertion part acts on, it can meet in hot state environment, because the part internal stress such as traditional force transferring structure caused by inner and outer ring casing thermal expansion rates are uncoordinated or supporting construction can not discharge the problem of, the risk of its internal insertion part self-excited vibration under unsteady flow incentive action power can also be reduced.
Description
Technical field
Obturaged the present invention relates to a kind of casing for the field such as gas turbine, aero-engine and auxiliary location structure,
More particularly to it is a kind of be suitable for the non-coordinating thermal deformation of inner and outer ring casing obturage and auxiliary location structure.The structure can meet this
Have in class mechanical structure inner and outer ring (non-) power transmission casing and (non-) support case obturage and the need of location structure design
Will, and meet dependency structure under the non-coordinating thermal deformation working condition of inner and outer ring casing obturage and auxiliary positioning effect.
Background technology
In double ducts or more duct aviation turbofan engines or have in the gas turbine structure design process of multilayer casing,
In order to meet intension bleed, the supply of bearing bore lubricating oil and recovery, combustion chamber fuel delivery, combustion chamber ignition and casing power transmission etc.
It is required that, it is often necessary to face what all kinds of tracheaes, oil pipe, igniter or Tiebar structure were arranged from inner ring casing to outer shroud casing
It is required that.In the design of some engine structures, in order to reduce loss, typically functionally similar pipeline is arranged in angular identical or connect
Near position, guide the corresponding axial location of outer shroud casing into from inner ring casing position by branch harden structure.But due to hot work
The temperature levels of inner and outer ring casing are different in environment, therefore the axially and radially thermal deformation degree of inner and outer ring casing is different, such a
In the case of, according to traditional pipeline arrangement, branch plate arrangement or pull bar tension mode can cause pipeline, support plate or
There is larger shearing or tensile stress in the inside configurations such as person's pull bar, in turn result in casing correspondence position and larger stress amplitude be present
Value, under the state of working long hours, even resulting in part generation crackle causes to fail.
In order to solve under the non-coordinating heat deformable state of inner and outer ring casing associated pipe, support plate or pull bar is isostructural obturages
And orientation problem, there is an urgent need to propose in a kind of engineering it is feasible, performance is more excellent, it is fixed to obturage and aid in suitable for inner and outer ring casing
The structure design strategy of bit architecture design requirement.
The content of the invention
For solve above-mentioned double-deck or multilayer casing internal duct, support plate, igniter or Auxiliary support Tiebar structure from
The non-coordinating thermal deformation of inner and outer ring casing that inner ring casing is faced when being arranged to outer shroud casing, outer shroud obturage face gas leakage and correlation
The unstable technical problem of structure positioning, the present invention propose it is a kind of obturage and the structure of auxiliary positioning, be used for double-deck machine as one kind
The light structures layout strategy of box structure design, can be applied in the fields such as gas turbine, aero-engine.
The present invention is that technical scheme is used by solving its technical problem：
It is a kind of be suitable for the non-coordinating thermal deformation of inner and outer ring casing obturage and auxiliary location structure, it is including inner ring casing, outer
Ring casing and the structural member being arranged between the inner ring casing and outer shroud casing, the inner end of the structural member, which passes through, to be set
Mounting hole on outer shroud casing wall is connected with the inner ring casing, and outer end is fixed in the installation by its end flange
On the outer shroud casing wall on hole periphery, it is characterised in that
Space between the inner ring casing and outer shroud casing is in different temperatures with the space on the outside of the outer shroud casing
In horizontal thermal environment, at least between the outer end flange of the structural member and the outer shroud casing wall on the mounting hole periphery
And the lightweight flexible part being integrally formed between the structural member and the mounting hole, the lightweight flexible part is under cold condition
Set in interference, the lightweight flexible part is realizing that the structural member is in institute under the non-coordinating heat deformable state of inner and outer ring casing
State obturaging and positioning for outer shroud casing periphery.
Preferably, the lightweight flexible part is further provided with inner ring flange, and the inner ring flange is attached to the mounting hole
On the outer shroud casing internal face on periphery.
Preferably, the lightweight flexible part is mounted in the edge of the outer shroud casing different types pass by flange, for
Some complicated passes, the lightweight flexible part are poured by mould and formed.
Preferably, the thickness of the flange of the lightweight flexible part structure is smaller than 2mm, and flange width should be not less than 5mm, uses
When realizing that the periphery of other engine structures (for example pipeline, support plate etc.) of its internal insertion is obturaged and auxiliary positioning acts on,
Its thickness should be greater than 2mm, it is proposed that using more than 3mm lightweight flexible part thickness.
Preferably, the lightweight flexible part must is fulfilled for the requirement of elastic conjunction when cold conditions is assembled, and the magnitude of interference should be by
Deformation amount under the hot working environment of inner and outer ring casing is calculated.The magnitude of interference of general unilateral elastic conjunction is not less than
0.2mm, so as to realize that internal insert structure obturages effect with the efficient of outer shroud casing.Too small cold conditions assembling amount may result in
The flow leakage on outer shroud casing type hole periphery under hot working environment, so as to cause the reduction of gas turbine power output or boat
The decay of empty motor power.
More preferably, the contact area between the lightweight flexible part and structural member should meet between the inner and outer ring casing
In the case that unsteady flow encourages, the vibrational energy of the structural member can be effectively absorbed.
More preferably, the structural member is lightweight flexible part when playing the Tiebar structure of inner and outer ring casing intermal force
Structure be arranged in close to outer shroud casing installation while or auxiliary installation while position, so as to avoid load path it is long caused by phase
Close part fatigue problem.
More preferably, the lightweight flexible part should have certain hardness number to ensure the cooperation with the structural member.
More preferably, the periphery of the lightweight flexible part is provided with pressure plate structure, and the pressure plate structure is pressed in the lightweight flexible
The external annular surface of part, is realized and what structural member was more excellent obturages effect.
More preferably, the outside of the lightweight flexible part is provided with pressure plate structure, then the lightweight flexible part inner ring flange can save
Slightly, outer shroud flange is only arranged, and obturaging and aiding in for structural member is ensured by the pressure plate structure outside outer shroud flange and elastic conjunction face
Positioning.
The present invention the non-coordinating thermal deformation of adaptation inner and outer ring casing obturage and auxiliary location structure, significantly can mitigate ground
The weight of face gas turbine, aero-engine, it can meet in hot state environment, because inner and outer ring casing thermal expansion rates are uncoordinated
The problem of part such as caused traditional force transferring structure or supporting construction internal stress can not discharge.Meanwhile the lightweight flexible part knot
Structure can also reduce the risk of its internal insertion part self-excited vibration under unsteady flow incentive action power.
By using the present invention the non-coordinating thermal deformation of adaptation inner and outer ring casing obturage and auxiliary location structure, Ke Yishi
Now following advantage：(1) effectively improve and obturage effect, prevent leakage, improve the performances of corresponding construction parts；(2) by lightweight bullet
Property part material characteristic itself, improve damped coefficient, effectively reduce and pneumatic wait adverse effect of the exciting force to part；(3) effectively drop
The harmful stress problem that the non-compatible deformation caused by various factors is brought between the parts of low engine assembly, improve zero
Part service life；(4) design of part processing is simple and weight is extremely light, has engineering application and the huge prospect promoted.
Brief description of the drawings
Fig. 1 be the present invention obturage and auxiliary location structure in double duct fanjets inner and outer ring casing position should
Use schematic diagram.
Fig. 2 be the present invention obturage and auxiliary location structure fan stator blade outer shroud casing position application signal
Figure.
Embodiment
For the objects, technical solutions and advantages of the present invention are more clearly understood, with reference to two embodiments to this hair
Bright to be described in further detail, following examples are explanation of the invention and the invention is not limited in following examples.
Fig. 1 is that the present invention obturages and the application at auxiliary location structure inner and outer ring casing position in double duct fanjets
Example.1 is lightweight flexible part, and 2 be outer shroud casing, and 3 be inner ring casing, and 4 be load pull bar.By bolt 5 by load pull bar 4 with
Inner ring casing 3 is connected.Load pull bar 4 is stuck on the mounting hole on outer shroud casing 2 by its top turnup structure 401, is entered
And the active force of inner ring casing 3 is passed into outer shroud casing 2.It is sprue between inner ring casing 3 and outer shroud casing 2, sprue
It is in the space in the outside of outer shroud casing 2 in the horizontal thermal environment of different temperatures.It is non-coordinating in view of inner and outer rings casing 2,3
The larger stress problem that thermal deformation is brought, the matching part of the load pull bar 4 and outer shroud casing 2 set lightweight flexible part
1, it is fixed by its turnup structure 101 (including inner ring flange and outer shroud flange), is carried out using the mating surface 102 of increase
Auxiliary positioning.By the material characteristic of lightweight flexible part 1 itself, it can bear to come from inner and outer ring machine in hot working environment
Extruding, distortion and the tensile stress caused by non-coordinating thermal deformation between casket 2,3.Load pull bar 4 is to periphery lightweight flexible
The squeezing action of part 1 then absorbs gas shock drop-down vibration of bar energy, avoids drawing vibration of bar.
Fig. 2 be the present invention obturage and the another embodiment of auxiliary positioning lightweight flexible part structure.Implement with upper one
Unlike example, the lightweight flexible part structure only devises outer shroud turnup structure 101, and is compressed by outer shroud pressure plate structure 103
The outer surface of lightweight flexible part 1.So as to realize that the gas on outer shroud casing static blade periphery obturages the auxiliary positioning work(with blade
Energy.Static blade and the lightweight flexible part 1 of outer shroud casing periphery mounting hole extruding can realize that the absorbing of static blade acts on, and avoid
The Self-Excited Vibration Problem that the lower static blade of unsteady flow impact is occurred.
It should be noted that obturaging in different embodiments and auxiliary location structure, should consider the use of the structure
Environment.Pay close attention to the factors such as temperature in use, Path of Force Transfer, power transmission level, mainstream gas pulse characteristic.These ambient parameters
Difference will cause to obturage and the design parameter of auxiliary location structure changes.Should be according to the need of reality in practical application example
Careful analysis is carried out, finally confirms whole design parameters of the structure.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of its parts and components, it is named
Title etc. can be different.The equivalent or simple change that all construction, feature and principles according to described in inventional idea of the present invention are done, is wrapped
Include in the protection domain of patent of the present invention.Those skilled in the art can be to described specific implementation
Example is made various modifications or supplement or substituted using similar mode, structure without departing from the present invention or surmounts this
Scope as defined in the claims, protection scope of the present invention all should be belonged to.
Claims (9)
1. it is a kind of be suitable for the non-coordinating thermal deformation of inner and outer ring casing obturage and auxiliary location structure, including inner ring casing, outer shroud
Casing and the structural member being arranged between the inner ring casing and outer shroud casing, the inner end of the structural member, which passes through, to be arranged on
Through hole on outer shroud casing wall is connected with the inner ring casing, and outer end is fixed in the through hole by its end flange
On the outer shroud casing wall on periphery, it is characterised in that
Space between the inner ring casing and outer shroud casing is in different temperatures level with the space on the outside of the outer shroud casing
Thermal environment in, at least between the outer end flange of the structural member and the outer shroud casing wall on the through hole periphery and
The lightweight flexible part being integrally formed between the structural member and the through hole, the lightweight flexible part are under cold condition
Interference is set, and the lightweight flexible part is realizing under the non-coordinating heat deformable state of inner and outer ring casing the structural member described outer
Obturaging and positioning in ring casing periphery.
2. system according to claim 1 is obturaged and auxiliary location structure, it is characterised in that the lightweight flexible part is by mould
Pouring is molded with, and its thickness should reach more than 2mm, and have certain hardness requirement, to meet the support of the structural member
Rigidity requirement.
Obturaged and auxiliary location structure 3. according to claim 1, it is characterised in that the lightweight flexible part and outer shroud machine
All kinds of mounting hole pattern opened on casket wall are adapted, and are designed with turnup structure, and the turnup structure can be realized described light
The assembling of matter elastic component and outer shroud casing.
4. obturaging according to the claims and auxiliary location structure, it is characterised in that the lightweight flexible part flange
The thickness of opening position can suitably be thinned, to mitigate the weight of lightweight flexible part；But it is obturaged and the thickness in auxiliary positioning face should
When not less than 2mm, ensureing under hot working environment, inner and outer ring casing caused by thermal deformation is uncoordinated structural member to lightweight bullet
Property part squeezing action and enough amount of compression, so as to eliminate the external force effect that its structural member born.
Obturaged and auxiliary location structure 5. according to claim 1, it is characterised in that the lightweight flexible part and outer shroud machine
Between casket by the way of cold conditions elastic conjunction, to ensure having enough cold conditions decrements along lightweight flexible part periphery, so that
Under hot working environment ensure lightweight flexible part along non-stress side obturage and auxiliary positioning act on.
Obturaged and auxiliary location structure 6. according to claim 5, it is characterised in that the lightweight flexible part and structural member
Between there is the interference face of enough area to ensure obturaging between lightweight flexible part and structural member or locating effect.
Obturaged and auxiliary location structure 7. according to claim 1, it is characterised in that the structural member is Tiebar structure
When, the lightweight flexible part should be close to the main installation section of outer shroud casing or the position of auxiliary installation section, to shorten load path simultaneously
Improve the force-transfer characteristic of casing.
Obturaged and auxiliary location structure 8. according to claim 1, it is characterised in that according to the wall temperature of inner and outer ring casing
The temperature levels of horizontal, internal mainstream gas are spent, it is real after mould pours to choose the horizontal lightweight flexible part material of different heatproofs
It is existing.
9. according to claim 1, claim 3 obturage and auxiliary location structure, it is characterised in that in the lightweight flexible part
It is outside as setting pressure plate structure, to ensure fully obturaging for lightweight flexible part and outer shroud casing interference fit face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710830857.XA CN107605604B (en) | 2017-09-15 | 2017-09-15 | It is a kind of be suitable for the non-coordinating thermal deformation of inner and outer ring casing obturage and auxiliary location structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710830857.XA CN107605604B (en) | 2017-09-15 | 2017-09-15 | It is a kind of be suitable for the non-coordinating thermal deformation of inner and outer ring casing obturage and auxiliary location structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107605604A true CN107605604A (en) | 2018-01-19 |
| CN107605604B CN107605604B (en) | 2019-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710830857.XA Active CN107605604B (en) | 2017-09-15 | 2017-09-15 | It is a kind of be suitable for the non-coordinating thermal deformation of inner and outer ring casing obturage and auxiliary location structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590786A (en) * | 2018-04-04 | 2018-09-28 | 中国航发沈阳发动机研究所 | Casing load-bearing frame between a kind of grade |
| CN109707468A (en) * | 2018-12-29 | 2019-05-03 | 中国科学院工程热物理研究所 | A kind of efficient seal structure applied between static casing |
| CN110761855A (en) * | 2019-10-11 | 2020-02-07 | 中国航发沈阳发动机研究所 | Gas turbine engine rear casing |
| CN112678193A (en) * | 2020-12-30 | 2021-04-20 | 中国航发沈阳发动机研究所 | Aeroengine pull rod circumferential adjusting mechanism |
| CN114151203A (en) * | 2021-10-20 | 2022-03-08 | 中国航发四川燃气涡轮研究院 | Sealing ring connecting structure |
| CN114922858A (en) * | 2022-07-21 | 2022-08-19 | 成都中科翼能科技有限公司 | Stator structure of low-pressure compressor of gas turbine and assembling method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590786A (en) * | 2018-04-04 | 2018-09-28 | 中国航发沈阳发动机研究所 | Casing load-bearing frame between a kind of grade |
| CN109707468A (en) * | 2018-12-29 | 2019-05-03 | 中国科学院工程热物理研究所 | A kind of efficient seal structure applied between static casing |
| CN109707468B (en) * | 2018-12-29 | 2022-03-15 | 中国科学院工程热物理研究所 | Be applied to high-efficient structure of obturating between static machine casket |
| CN110761855A (en) * | 2019-10-11 | 2020-02-07 | 中国航发沈阳发动机研究所 | Gas turbine engine rear casing |
| CN112678193A (en) * | 2020-12-30 | 2021-04-20 | 中国航发沈阳发动机研究所 | Aeroengine pull rod circumferential adjusting mechanism |
| CN114151203A (en) * | 2021-10-20 | 2022-03-08 | 中国航发四川燃气涡轮研究院 | Sealing ring connecting structure |
| CN114151203B (en) * | 2021-10-20 | 2023-08-18 | 中国航发四川燃气涡轮研究院 | Sealing ring connecting structure |
| CN114922858A (en) * | 2022-07-21 | 2022-08-19 | 成都中科翼能科技有限公司 | Stator structure of low-pressure compressor of gas turbine and assembling method thereof |
| CN114922858B (en) * | 2022-07-21 | 2022-09-30 | 成都中科翼能科技有限公司 | Stator structure of low-pressure compressor of gas turbine and assembling method thereof |
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| CN107605604B (en) | 2019-04-16 |
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