CN110259521A - A kind of blade retention for turbomachine - Google Patents
A kind of blade retention for turbomachine Download PDFInfo
- Publication number
- CN110259521A CN110259521A CN201910706872.2A CN201910706872A CN110259521A CN 110259521 A CN110259521 A CN 110259521A CN 201910706872 A CN201910706872 A CN 201910706872A CN 110259521 A CN110259521 A CN 110259521A
- Authority
- CN
- China
- Prior art keywords
- turbomachine
- blade
- blade retention
- backstop
- locking arm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000014759 maintenance of location Effects 0.000 title claims abstract description 34
- 238000009434 installation Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 238000005495 investment casting Methods 0.000 claims description 4
- 238000000354 decomposition reaction Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000001925 catabolic effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
- F01D5/3007—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type
- F01D5/3015—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type with side plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
- F01D5/32—Locking, e.g. by final locking blades or keys
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides a kind of blade retentions for turbomachine, it can be used for being maintained at the rotor blade of the turbomachines such as gas turbine, aero-engine in rotor disk axial direction tongue-and-groove, it is made of locking arm, positive stop, linkage section, four part of backstop, by blade axial restraint, root of blade end face be arranged a locking slot, radially and circumferentially stop this be used for the blade retention of turbomachine.Without the aperture on wheel disc, any blade can be individually replaced.
Description
Technical field
The invention belongs to machinery impeller vane retainer structure-design technique fields, more particularly to one kind to be used for turbomachine
Blade retention.
Background technique
In the turbomachines equipment such as aero-engine and gas turbine, rotor high speed rotation, running rotor blade meeting
Generate biggish centrifugal force.Using the method for processing axial tongue-and-groove on wheel disc, fixed blade is a kind of quilt radially and circumferentially
The structure type verified extensively.When using this structure, designer needs to solve the problems, such as blade axial locking.
In general, the axial locking mode of blade can be divided into two classes at present.First is that using the side of axial baffle or baffle ring
Formula；Second is that using lock sheet.Axial baffle mostly uses bolt or other modes that whole circle baffle is pressed in wheel side surface.This
Kind locking mode, which needs to be repeated several times during installation, to be tightened bolt or is operated the structures such as snap ring using special tooling to realize lock
Tightly, it is disadvantageous in that installation disintegration amount is big, needs special tooling.This locking mode generally requires equal in wheel disc two sides simultaneously
This device is set, overall complexity is further increased.In terms of lock sheet, previous locking device usually requires two kinds of part cooperations
Using or need erection stage make locking device generate permanent plastic deformation, installation and disintegration amount it is all larger.
Summary of the invention
(1) technical problems to be solved
The present invention provides it is a kind of installation and disintegration amount it is small, can single blade of convenient decompositions, be not necessarily in erection stage
Implement the blade retention for turbomachine of plastic deformation to part.
(2) technical solution
The present invention provides a kind of blade retentions for turbomachine, by locking arm, positive stop, linkage section, rear gear
Four part of block composition, the locking arm are bent with spoon shape, are vertically connected at a line center of positive stop；The positive stop and
Backstop is rectangular sheet, and the linkage section links together positive stop and backstop；Utilize root of blade end face
Locking slot realizes fixed and circumferential stop, and hot investment casting realization can be used in locking slot, it is preferred that it is real that Milling Machining mode can also be used
It is existing.
The backstop can be smoothly packed between blade root and tongue-and-groove along axial under wheel disc radially vertical setting angle
Gap, rotation can radially limit the axial activity of blade to wheel disc.
The positive stop cooperates under the state that is installed with backstop, can limit the axial activity of blade.
The locking arm has elasticity appropriate, can reduce assembly difficulty using flexible deformation in erection stage, can make it
Just it is stuck in the locking slot, the blade retention is fixed on locked position, the leaf can be limited in the operation phase
The circumferential activity of the blade retention of wheel mechanical.
The locking arm, which is equipped with, installs and decomposes overhanging small end, can utilize in installation and catabolic phase described overhanging
Small end simplifies installation and decomposes the operation for dismantling the blade retention of the turbomachine.
The locking arm is equipped with stop edge, has gap between the stop edge and the locking slot, can make stop edge
Just it is caught in the locking slot, the locking arm that can avoid in working condition is disengaged from locking slot under the action of the centrifugal force.
Locking arm, positive stop and backstop are connected and fixed by the linkage section by welding manner, it is preferred that
Casting method can be used and realize connection.
(3) beneficial effect
It can be seen from the above technical proposal that the invention has the following advantages:
(1) it is not necessarily to the aperture on wheel disc, is fixed without using other auxiliary bodies；
(2) locking device need not be plastically deformed in erection stage；
(3) it installs and decomposes without Special frock device；
(4) the decomposition replacement of single blade can be easily realized.
Detailed description of the invention
Fig. 1 is axial barrier structure schematic diagram；
Fig. 2 is conventional locking mechanism schematic diagram；
Fig. 3 is axial tenon groove structure schematic diagram；
Fig. 4 is blade retention structural schematic diagram of the invention；
Fig. 5 is locking slot schematic diagram of the invention；
Fig. 6 is blade retention installation place front apron side coil schematic diagram of the invention；
Fig. 7 is blade retention installation place rear baffle side coil schematic diagram of the invention；
Fig. 8 is that blade retention of the invention is installed rear front apron side coil schematic diagram；
Fig. 9 is that blade retention of the invention is installed rear rear baffle side coil schematic diagram；
Figure 10 is the blade retention lock sheet and locking slot detail view invented.
Symbol description
1 locking arm
2 positive stops
3 linkage sections
4 backstops
5 locking slots
6 wheel discs
7 blades
The side of 8 roots of blade
9 gaps
10 overhanging small ends
The side of 11 root of blade end faces
12 locking arm stop edges
21,22 snap ring
23,24 baffle
25 lock sheets
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.It should be noted that in attached drawing or specification description, similar or identical portion
Divide and all uses identical figure number.The implementation for not being painted or describing in attached drawing is those of ordinary skill in technical field
Known form.In addition, though can provide the demonstration of the parameter comprising particular value herein, it is to be understood that parameter is without definite etc.
In corresponding value, but can be similar to be worth accordingly in acceptable error margin or design constraint.It is mentioned in embodiment
Direction term, such as "upper", "lower", "front", "rear", "left", "right" etc. are only the directions with reference to attached drawing.Therefore, the side used
Protection scope of the present invention is intended to be illustrative and not intended to limit to term.
As shown in Figure 1, for blade is locked by the way of axial baffle or baffle ring at present, using bolt or its other party
Whole circle baffle is pressed in wheel side surface by formula.Such locking mode, which needs to be repeated several times during installation, tightens bolt or using special
Two sides snap ring 21,22 is operated with tooling, and whole circle baffle 23,24 is pressed on the end face of wheel disc 6 and realizes locking, is needed
This device is all referred in 6 two sides of wheel disc, installing and dismounting heavy workload needs special tooling.
It is illustrated in figure 2 at present using lock sheet by by the way of blade locking, simultaneously circumferentially by lock sheet 25 and blade 7
After tongue-and-groove is packed into wheel disc 6, lock sheet 25 need to be rushed curved and make its permanent deformation to reach fixed function.
The present invention provides a kind of blade retention for turbomachine, by locking arm 1, positive stop 2, linkage section 3, rear gear
4 four part of block composition.In one embodiment, as shown in Fig. 3 or Fig. 5, blade 7 is fixed on wheel disc 6 by axial tenon groove structure,
Blade retention for turbomachine as shown in Figure 4 can realize the fixation of the blade 7 in the axial direction.When the blade is protected
When holder needs to install, first locking arm 1 is lifted, according to orientation shown in Fig. 6 or Fig. 7 by the blade retention according to certain angle
The installation site reserved on wheel disc 6 is encased in along axial direction, angle locating for backstop 4 can be smoothly along axial loading at this time.When after shelves
After block 4 reaches the other side of wheel disc 6, rotate the blade retention according to direction shown in arrow in Fig. 6, reach such as Fig. 8 or
Position shown in Fig. 9.Locking arm can be loosened at this time, be caught in it in locking slot 5 of 7 root end face of blade, realize that the blade is protected
The circumferential stop of holder.
Wherein, the length of the linkage section 3 of the blade retention for turbomachine is identical as 6 thickness of wheel disc or extremely
It is close, make positive stop 2 and backstop 4 that can abut the two sidewalls of wheel disc 6 just, with seamless fixed blade 7, make its keep securely and
It will not be shaken in running.
As shown in Figure 10, locking slot 5 is designed as and 1 shape of locking arm the locking slot 5 close to the side 11 of 7 root end face of blade
Shape is identical skewed, makes locking arm 1 can be closely caught thereon, it can be achieved that keeping the blade under cold conditions when being installed
Device is radially fixed.
It as shown in Figure 10, can there are suitable between side 8 and locking arm stop edge 12 of the locking slot 5 far from root of blade
When gap 9, can make locking arm 1 smoothly be packed into locking slot 5, be also avoided that locking arm 1 under operating state by centrifugation masterpiece
It is loosened with from locking slot 5.1 end of locking arm is equipped with an overhanging small end 10, can be in the installation and removal stage as locking arm 1
Facilitate pull unit.
The blade retention for turbomachine can by welding manner by locking arm 1, positive stop 2, linkage section 3,
Backstop 4 is connected and is fixed, and hot investment casting mode can also be used and realize.The locking slot can be used hot investment casting mode and realize,
Milling Machining mode can also be used to realize.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (8)
1. a kind of blade retention for turbomachine, which is characterized in that the blade retention packet for turbomachine
It includes: locking arm, positive stop, linkage section, four part of backstop；The locking arm connects positive stop；The positive stop and backstop
It is rectangular sheet；The linkage section is cylinder, and positive stop and backstop are linked together；It is described to be used for turbomachine
Blade retention fixed and circumferential stop is realized by the locking slot of root of blade end face.
2. the blade retention according to claim 1 for turbomachine, which is characterized in that the backstop with wheel
Disk radially can radially limit leaf along the axial gap being packed between blade root and tongue-and-groove, rotation to wheel disc under vertical setting angle
The axial activity of piece.
3. the blade retention according to claim 1 for turbomachine, which is characterized in that the positive stop is being installed
Under completion status, cooperate with backstop, the axial activity of blade can be limited.
4. the blade retention according to claim 1 for turbomachine, which is characterized in that the linkage section passes through weldering
It connects mode locking arm, positive stop and backstop are connected and fixed, or connection is realized using casting method.
5. the blade retention according to claim 1 for turbomachine, which is characterized in that the locking slot can be used
Hot investment casting is realized, Milling Machining mode can also be used and realize.
6. the blade retention according to claim 1 for turbomachine, which is characterized in that the locking arm has bullet
Property, the blade retention for being used for turbomachine is fixed on locked position, can be limited in the operation phase described for impeller
The circumferential activity of the blade retention of mechanical turbomachine.
7. the blade retention according to claim 1 for turbomachine, which is characterized in that the locking arm is equipped with
Installation and the overhanging small end of decomposition.
8. the blade retention according to claim 1 for turbomachine, which is characterized in that the locking arm is equipped with
Stop edge has gap, stop edge can be made to be caught in the locking slot just between the stop edge and the locking slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910706872.2A CN110259521A (en) | 2019-07-31 | 2019-07-31 | A kind of blade retention for turbomachine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910706872.2A CN110259521A (en) | 2019-07-31 | 2019-07-31 | A kind of blade retention for turbomachine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110259521A true CN110259521A (en) | 2019-09-20 |
Family
ID=67912654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910706872.2A Pending CN110259521A (en) | 2019-07-31 | 2019-07-31 | A kind of blade retention for turbomachine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110259521A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153445A (en) * | 2021-04-15 | 2021-07-23 | 中国航发湖南动力机械研究所 | Tenon joint structure of turbine working blade of turbine engine and turbine engine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1048165A (en) * | 1965-03-29 | 1966-11-09 | Prvni Brnenska Strojirna Zd Y | Improvements in or relating to bladed rotors of rotary machines such as gas turbine engines |
| CN2348499Y (en) * | 1997-02-07 | 1999-11-10 | 莫列斯公司 | Connector with reinforced lock |
| CN102444479A (en) * | 2010-10-12 | 2012-05-09 | 通用电气公司 | Axial retention device for turbine system |
| CN203335139U (en) * | 2013-07-23 | 2013-12-11 | 杭州汽轮机械设备有限公司 | Stop pin of turbine last stage blade and installation structure thereof |
| CN105473824A (en) * | 2013-11-20 | 2016-04-06 | 三菱重工业株式会社 | Turbine rotor assembly, blade stop plate for turbine rotor assembly, and method for assembling blade stop plate |
| CN109128742A (en) * | 2018-09-06 | 2019-01-04 | 何昊充 | A kind of turbine blade set and its application method of gas turbine |
| CN210564669U (en) * | 2019-07-31 | 2020-05-19 | 中国科学院工程热物理研究所 | Blade retainer for impeller machinery |
-
2019
- 2019-07-31 CN CN201910706872.2A patent/CN110259521A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1048165A (en) * | 1965-03-29 | 1966-11-09 | Prvni Brnenska Strojirna Zd Y | Improvements in or relating to bladed rotors of rotary machines such as gas turbine engines |
| CN2348499Y (en) * | 1997-02-07 | 1999-11-10 | 莫列斯公司 | Connector with reinforced lock |
| CN102444479A (en) * | 2010-10-12 | 2012-05-09 | 通用电气公司 | Axial retention device for turbine system |
| CN203335139U (en) * | 2013-07-23 | 2013-12-11 | 杭州汽轮机械设备有限公司 | Stop pin of turbine last stage blade and installation structure thereof |
| CN105473824A (en) * | 2013-11-20 | 2016-04-06 | 三菱重工业株式会社 | Turbine rotor assembly, blade stop plate for turbine rotor assembly, and method for assembling blade stop plate |
| CN109128742A (en) * | 2018-09-06 | 2019-01-04 | 何昊充 | A kind of turbine blade set and its application method of gas turbine |
| CN210564669U (en) * | 2019-07-31 | 2020-05-19 | 中国科学院工程热物理研究所 | Blade retainer for impeller machinery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153445A (en) * | 2021-04-15 | 2021-07-23 | 中国航发湖南动力机械研究所 | Tenon joint structure of turbine working blade of turbine engine and turbine engine |
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