CN107524523A - A kind of lightweight power transmission branch harden structure and the casing with the branch harden structure - Google Patents
A kind of lightweight power transmission branch harden structure and the casing with the branch harden structure Download PDFInfo
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- CN107524523A CN107524523A CN201710706970.7A CN201710706970A CN107524523A CN 107524523 A CN107524523 A CN 107524523A CN 201710706970 A CN201710706970 A CN 201710706970A CN 107524523 A CN107524523 A CN 107524523A
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- support plate
- power transmission
- branch
- harden structure
- casing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of lightweight power transmission branch harden structure that can be applied in ground gas turbine and aero-engine, power transmission support plate is formed by thickness of slab 0.3mm~2mm sheet material through sheet-metal formed；There are one fixed width, depth, stamped shaping reinforcement boss rib structure around support plate different height Position Design；The support plate combines with inner and outer ring casing eventually through the mode of welding and bears the complex stress under weld assembly working condition.The support plate by sheet-metal formed of the present invention can significantly mitigate the weight of support plate casing in ground gas turbine, aero-engine.Further, analyzed from engine power transmission, loading angle, the construction design method of the reinforcement boss rib structure discrete positioned at branch plate surface different height position, it can not only meet in hot state environment, the demand of support plate thermal expansion caused by inner and outer ring casing different distortion speed, while the vibration risk of the thin-walled support plate as caused by mainstream channel swiftly flowing gas flow pulsation institute possibility can also be adapted to.
Description
Technical field
The present invention relates to a kind of branch harden structure for fields such as gas turbine, aero-engines, more particularly to one kind are light
Matter power transmission branch harden structure, the structure can meet in this kind of mechanical structure the design of (non-) power transmission casing and (non-) power transmission casing
Need.
Background technology
Due to being related to engine safety in operation, the Reliable Design of (non-) power transmission casing and (non-) power transmission casing is one
The individual Structure Designing Problem for having important practical usage in gas turbine and aero-engine field.
Conventional gas turbine, aero-engine structure design in, this kind of casing component is often by pieces using complicated
The part combination of hot investment casting or forging is welded.And (non-) power transmission casing of this kind of casing component is used, interior outer flow passage leads to
Cross circumferentially distributed several support plates to be weldingly connected, traditional power transmission branch harden structure is as shown in figure 1, it there are two features：First
Feature be it is general using casting or sheet-metal formed by the way of, can also use after being machined with inner and outer ring casing Combination Welding
Mode；Second feature be in order to increase its rigidity and force-transfer characteristic, even with the mode of sheet-metal formed, its thickness often compared with
Thick (being more than 1.5mm), and its weight is then heavier according to the mode of casting.In order to improve the intensity of casing, ensure sending out
There is enough intensity, support plate often designs thicker, and it inevitably causes the weight of casing in motivation running
The problem of overweight, part processing technology complexity and too high processing cost.Simultaneously as support plate wall thickness is excessive, pair plus
Work brings very big puzzlement so that the process route of precision casting and forging can cause a large amount of losses of blank, also can shape
Into a large amount of loss and wastes of blank raw material.
For traditional (non-) power transmission casing design, processing link problem encountered, there is an urgent need to propose in a kind of engineering
The casing modular construction layout strategy feasible, performance is more excellent.
The content of the invention
For the disadvantages mentioned above and deficiency of prior art, the present invention is intended to provide a kind of with the lightweight for radially strengthening fin
Branch harden structure, lightweight branch harden structure consider root rounding by thin-walled sheet-metal formed, and shape is processed through metal plate punching in branch plate surface
Into rib structures are strengthened, according to temperature environment level, the temperature water of support plate inner and outer ring end wall casing of support plate place mainstream channel
Flat and support plate upstream and downstream sectional position moving blade intrinsic frequency characteristic, the choosing through preferred implementation support plate parameter of structure design
Take and branch plate surface strengthens optimizing and revising for rib structures design parameter.On the premise of support plate structural strength is ensured, realize
The lightweight of branch harden structure, can be in turbines such as gas turbine, aero-engines as a kind of power transmission case structure layout strategy
Tool is applied in field.
The present invention is that technical scheme is used by the technical problem for solving above-mentioned (non-) power transmission casing：
A kind of lightweight power transmission branch harden structure, the power transmission support plate be arranged on the inner ring casing of engine and outer shroud casing it
Between, overall is in hollow and thin-walled structure, and its upper end is welded on the inwall of the outer shroud casing, and lower end is welded on the inner ring casing
Outer wall on, to transmit high pressure rear fulcrum bearing radial load, the inner and outer ring casing welding of the power transmission support plate and engine
Place forms root rounded feature, it is characterised in that
The power transmission support plate is made by thin-wall boards through sheet-metal formed, and with the blade profile molded line needed for support plate and support plate blade
Type, several outstanding discrete arrangements are formed in branch plate surface through metal plate punching along the short transverse of the power transmission support plate
Strengthen rib structures, each bearing of trend for strengthening fin and the grain direction of the branch plate surface are at least basically identical.
Preferably, the thickness of the power transmission support plate can be chosen in the range of 0.3mm~2mm, but can be according to actual design work
Condition is adjusted.
More preferably, the stainless steel that mechanical property is more excellent, welding performance is good may be selected in the sheet material of the power transmission support plate
Or high-temperature alloy material is through sheet-metal formed self-assembling formation.
More preferably, the power transmission branch harden structure and inner and outer ring end wall casing should have the end wall rounded feature not less than 2.5mm,
In view of the technique sexual factor of processing, the rounded feature should be by support plate sheet-metal formed technique self-assembling formation.
More preferably, the design such as quantity, width and direction of reinforcement rib structures of the power transmission support plate body structure surface is joined
Number should be respectively according to grain direction of the thermal expansion requirement of inner and outer ring end wall casing, support plate vibration characteristics and main flow air-flow etc.
Factor determines.
More preferably, the inner and outer ring casing with the power transmission support plate structure welding answers the structure of preferred sheet-metal formed, and uses
Welding procedure in addition to soldering, ensure the lightweight nature of the weld strength and weld assembly at solder design.
More preferably, the arranged direction of the reinforcement boss rib structure of stamped shaping can use and its surface streamline direction one
Cause or close direction is arranged, farthest reduce the friction loss of the branch plate surface caused by the rib structures.
More preferably, circumferentially direction, the power transmission branch harden structure can contemplate uneven arrangement, to eliminate on support plate
Lower position trip moving blade occurs because the moving blade low order that support plate is uniform and is triggered is from the problem of exciting frequency coupling.
More preferably, the radial direction positioned at the power transmission support plate different height section, which strengthens boss rib structure, can arrange through preferable
Projection width, to adapt under the working temperature environment of different support plate mainstream channels, the different support plate inner and outer ring casing types of cooling
With the hot free wxpansion problem of the horizontal lower carrier plate of temperature deformation.Improve the fatigue life of weld assembly.
More preferably, according to parameters such as the height of boss rib, width, the metal plate punching mold design being repeatedly molded is taken.Together
When, in order to ensure the smooth transfer of boss rib and branch plate surface, the parameter of boss rib needs to optimize design.
More preferably, the boss rib of the lightweight power transmission support plate body structure surface is highly not less than 5mm, quantity no less than 3, convex
The height and quantity of platform rib can further optimize and revise the vibration characteristics of lightweight support plate, optimize its force-transfer characteristic.
According to another aspect of the present invention, a kind of casing with above-mentioned lightweight branch harden structure is additionally provided.
The lightweight power transmission branch harden structure of the present invention, compared with traditional support plate, has the advantage that：(1) present invention's is light
Matter power transmission support plate uses integrated design with its surface rib structures, and processing is simply.Huge prospect with engineering application；
(2) fin is designed in branch plate surface, adds the structural strength of support plate, therefore support plate wall thickness can greatly reduce, so as to obvious
The weight of casing component is reduced, improves engine performance；(3) analyzed from engine power transmission, loading angle, positioned at branch plate surface not
With the construction design method of the discrete reinforcement boss rib structure of height and position, can not only meet in hot state environment, because inside and outside
The demand of support plate thermal expansion caused by ring casing different distortion speed, while can also adapt to swiftly flowing by mainstream channel
Gas flow pulsation institute possibility caused by thin-walled support plate vibration risk.
Brief description of the drawings
Fig. 1 is the schematic diagram of traditional power transmission support plate design.
Fig. 2 is the schematic diagram of the lightweight branch harden structure of the present invention.
Embodiment
With reference to embodiment, the present invention is described in further detail, following examples be explanation of the invention and
The invention is not limited in following examples.
Fig. 2 is the lightweight power transmission branch harden structure of the present invention.The lightweight power transmission branch harden structure 100 of the present invention, is arranged on and starts
Between the inner ring casing 200 and outer shroud casing 300 of machine, overall is in hollow and thin-walled structure, and its upper end is welded on outer shroud casing 300
On inwall, lower end is welded on the outer wall of inner ring casing 200.Fig. 2 shows that the lightweight power transmission branch harden structure of the present invention is applied
In aero-engine in high and low pressure turbine level changeover portion, play a part of transmitting high pressure rear fulcrum bearing radial load.Power transmission branch
Plate 100 has 3 by thin-wall boards through sheet-metal formed, and with the blade profile molded line and support plate blade shape construction needed for support plate, its surface
The boss rib structure 101 of the individual discrete arrangement of radial direction, the boss rib structure 101 are through metal plate punching and outside by branch plate surface
It is prominent.The lightweight power transmission support plate 100 is independent part, and complete load path is formed after subsequently being welded with inner and outer ring casing.
Can be by the way of metal plate, can also be by the way of casting.But do not recommend to be molded by the way of machining.
Due to the use of boss rib structure 101, the thickness of power transmission support plate 100 can be chosen in the range of 0.3mm~2mm, and can be according to reality
Border design conditions are adjusted, and due to the presence of boss rib structure in the present embodiment, the thickness of power transmission support plate 100 is only 0.8mm
(support plate uses the material of high temperature alloy), significantly reduce the weight of part.Improve the thrust-weight ratio index of engine.
The stainless steel that mechanical property is more excellent, welding performance is good may be selected in the sheet material of power transmission support plate 100 or high temperature closes
Golden material is through sheet-metal formed self-assembling formation.Power transmission branch harden structure 100 should have with inner and outer ring end wall casing 200,300 to be not less than
2.5mm end wall rounded feature, it is contemplated that the technique sexual factor of processing, the rounded feature should be natural by support plate sheet-metal formed technique
Formed.
The design parameters such as quantity, width and the direction of reinforcement rib structures 101 on the surface of power transmission support plate 100 should be distinguished
The factors such as the grain direction according to the thermal expansion requirement of inner and outer ring end wall casing, support plate vibration characteristics and main flow air-flow determine.
The inner and outer ring casing 200,300 that power transmission branch harden structure 100 is welded answers the structure of preferred sheet-metal formed, and using the weldering in addition to soldering
Technique is connect, ensures the lightweight nature of the weld strength and weld assembly at solder design.
The arranged direction for strengthening boss rib structure 101 of stamped shaping can use it is consistent with its surface streamline direction or
Close direction arrangement, farthest reduces the friction loss of the branch plate surface caused by the rib structures.More preferably,
Circumferentially direction, power transmission branch harden structure 100 are located at support plate upstream and downstream position moving blade it is contemplated that uneven arrangement to eliminate
Occur because the moving blade low order that support plate is uniform and triggers is from the problem of exciting frequency coupling.Positioned at the different height of power transmission support plate 100
The radial direction in section, which strengthens boss rib structure 101, can arrange through preferable projection width, to adapt in different support plate mainstream channels
Under working temperature environment, the hot free wxpansion of the different support plate inner and outer ring casing types of cooling and the horizontal lower carrier plate of temperature deformation is asked
Topic, improve the fatigue life of weld assembly.According to parameters such as the height of boss rib 101, width, the metal plate being repeatedly molded is taken to rush
Compression mould designs.Meanwhile in order to ensure the smooth transfer of boss rib and branch plate surface, the parameter of boss rib needs to optimize to set
Meter.Preferably, the height of boss rib 101 on the surface of lightweight power transmission branch harden structure 100 is no less than 3 not less than 5mm, quantity, boss
The height and quantity of rib 101 can further optimize and revise the vibration characteristics of lightweight support plate, optimize its force-transfer characteristic.
It should be noted that the rib structures design of the branch harden structure and its surface in different practical examples, should consider
The use environment of the structure.Pay close attention to temperature in use, Path of Force Transfer, power transmission horizontal, mainstream gas pulse characteristic and up and down
There are the factors such as rotor rotational frequency.The difference of these ambient parameters will cause the design for strengthening rib structures and branch harden structure
Parameter changes.Careful analysis should be carried out according to the actual needs in practical application example, finally confirm the whole of the structure
Design parameter.
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 (10)
1. a kind of be arranged on applied to ground gas turbine or the lightweight power transmission branch harden structure of aero-engine, the power transmission support plate
Between the inner ring casing and outer shroud casing of engine, overall is in hollow and thin-walled structure, and its upper end is welded on the outer shroud casing
On inwall, lower end is welded on the outer wall of the inner ring casing, to transmit high pressure rear fulcrum bearing radial load, the power transmission
The inner and outer ring casing weld of support plate and engine forms root rounded feature, it is characterised in that：
The power transmission support plate is molded by thin-wall boards through panel beating, and is made with the blade profile molded line needed for support plate and support plate blade
Type, several outstanding reinforcement fin knots are formed in branch plate surface through metal plate punching along the short transverse of the power transmission support plate
Structure, each bearing of trend for strengthening fin and the grain direction of the branch plate surface are at least basically identical, and each reinforcement
Fin is discrete in the short transverse of the power transmission support plate to be arranged and has different in width.
2. lightweight power transmission branch harden structure according to claim 1, it is characterised in that the power transmission support plate is by thickness 0.3mm
~2mm sheet material is molded through panel beating, and the radial position in its different height section is disposed with suitable width, stamped shaping
Reinforcement rib structures.
3. lightweight power transmission branch harden structure according to claim 1, it is characterised in that the power transmission support plate and inner and outer ring casing
Rounded feature by sheet-metal formed self-assembling formation, it is contemplated that the needs of shaping, support plate circumferentially allow have a weld seam, support plate both ends
Rounding can arrange one to two weld seam according to machining process route.
4. lightweight power transmission branch harden structure according to claim 1, it is characterised in that the support plate blade profile of the power transmission support plate is adopted
There is lift leaf structure with the leaf structure of zero-lift, or using with rectification or diffusion/expansion.
5. lightweight power transmission branch harden structure according to claim 1, it is characterised in that circumferentially the arrangement of direction support plate can be examined
The non-mode uniformly arranged is taken in worry.Support plate and rotor blade of the upstream and downstream rotor blade caused by support plate quantity are avoided as far as possible
Low order frequency exciting problem, so as to avoid inducing the problem of rotor blade high cycle fatigue fails.
6. lightweight power transmission branch harden structure according to claim 1, it is characterised in that the reinforcement fin knot of the branch plate surface
Structure, it is contemplated that the operating temperature of support plate is horizontal in inner and outer ring casing different temperature levels and mainstream channel, strengthens fin knot
The width of structure, quantity can determine (scope that its general width is 2mm~7mm, quantity are 3~8) after preferably.
7. lightweight power transmission branch harden structure according to claim 1, it is characterised in that the reinforcement fin knot of the branch plate surface
Structure, the selection of its fin design parameter should also combine the sheet metal thickness of support plate and the ripple frequency of branch plate surface high velocity air
Factor, ensure that harmful vibration does not occur in passage in the presence of main flow air-flow for support plate.
8. the lightweight power transmission branch harden structure according to claim 1 to 6, it is characterised in that inside and outside the branch plate weld
Ring casing is preferably that sheet-metal formed mode is process, and welding manner can carry out preferred according to the characteristic of power transmission.It is contemplated that remove pricker
Welding method beyond weldering realizes the transmission of weld assembly stress to improve the intensity of weld seam at welding position.
9. the lightweight power transmission branch harden structure according to claim 1,8, it is characterised in that the rounding of the support plate root should
Not less than 2.5mm, to reduce the problem of stress concentration caused by support plate root fillet is too small.
10. the lightweight power transmission branch harden structure according to claim 1,8, it is characterised in that according to different use environment temperature
Degree is horizontal, and support plate can use the materials such as stainless steel, high temperature alloy, ensure more preferably material mechanical performance, suitable thermal expansion system
Several and reliable welding performance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710706970.7A CN107524523B (en) | 2017-08-17 | 2017-08-17 | Light-weight force-transmission support plate structure and casing with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710706970.7A CN107524523B (en) | 2017-08-17 | 2017-08-17 | Light-weight force-transmission support plate structure and casing with same |
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| Publication Number | Publication Date |
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| CN107524523A true CN107524523A (en) | 2017-12-29 |
| CN107524523B CN107524523B (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710706970.7A Active CN107524523B (en) | 2017-08-17 | 2017-08-17 | Light-weight force-transmission support plate structure and casing with same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667669A (en) * | 2018-12-28 | 2019-04-23 | 中国科学院工程热物理研究所 | Gas turbine inlet air casing |
| CN111852581A (en) * | 2020-07-24 | 2020-10-30 | 中国科学院工程热物理研究所 | Supporting plate structure suitable for main force bearing casing force transmission |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7544040B2 (en) * | 2004-05-27 | 2009-06-09 | Volvo Aero Corporation | Support structure in a turbine or compressor device and a method for assembling the structure |
| CN101776013A (en) * | 2009-01-07 | 2010-07-14 | 通用电气公司 | Method and apparatus to enhance transition duct cooling in a gas turbine engine |
| CN202202902U (en) * | 2011-06-30 | 2012-04-25 | 中航商用航空发动机有限责任公司 | Intermediate case for aeroengine |
| CN202707162U (en) * | 2012-06-11 | 2013-01-30 | 中国航空工业集团公司沈阳发动机设计研究所 | Support plate external fork tooth structure of gas turbine rear casing |
| CN104053859A (en) * | 2011-12-20 | 2014-09-17 | Gkn航空公司 | Method for manufacturing of a gas turbine engine component |
| CA2957456A1 (en) * | 2016-02-12 | 2017-08-12 | General Electric Company | Riblets for a flowpath surface of a turbomachine |
-
2017
- 2017-08-17 CN CN201710706970.7A patent/CN107524523B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7544040B2 (en) * | 2004-05-27 | 2009-06-09 | Volvo Aero Corporation | Support structure in a turbine or compressor device and a method for assembling the structure |
| CN101776013A (en) * | 2009-01-07 | 2010-07-14 | 通用电气公司 | Method and apparatus to enhance transition duct cooling in a gas turbine engine |
| CN202202902U (en) * | 2011-06-30 | 2012-04-25 | 中航商用航空发动机有限责任公司 | Intermediate case for aeroengine |
| CN104053859A (en) * | 2011-12-20 | 2014-09-17 | Gkn航空公司 | Method for manufacturing of a gas turbine engine component |
| CN202707162U (en) * | 2012-06-11 | 2013-01-30 | 中国航空工业集团公司沈阳发动机设计研究所 | Support plate external fork tooth structure of gas turbine rear casing |
| CA2957456A1 (en) * | 2016-02-12 | 2017-08-12 | General Electric Company | Riblets for a flowpath surface of a turbomachine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667669A (en) * | 2018-12-28 | 2019-04-23 | 中国科学院工程热物理研究所 | Gas turbine inlet air casing |
| CN111852581A (en) * | 2020-07-24 | 2020-10-30 | 中国科学院工程热物理研究所 | Supporting plate structure suitable for main force bearing casing force transmission |
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| Publication number | Publication date |
|---|---|
| CN107524523B (en) | 2020-06-02 |
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