CN108204249A - Variable speed last-stage moving blade of air-cooled steam turbine - Google Patents
Variable speed last-stage moving blade of air-cooled steam turbine Download PDFInfo
- Publication number
- CN108204249A CN108204249A CN201611185418.XA CN201611185418A CN108204249A CN 108204249 A CN108204249 A CN 108204249A CN 201611185418 A CN201611185418 A CN 201611185418A CN 108204249 A CN108204249 A CN 108204249A
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- blade
- steam turbine
- air
- variable speed
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- 230000003247 decreasing effect Effects 0.000 claims abstract description 28
- 206010039897 Sedation Diseases 0.000 claims abstract description 20
- 238000010586 diagram Methods 0.000 description 9
- 230000008878 coupling Effects 0.000 description 8
- 238000010168 coupling process Methods 0.000 description 8
- 238000005859 coupling reaction Methods 0.000 description 8
- 239000000543 intermediate Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding 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
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/147—Construction, i.e. structural features, e.g. of weight-saving hollow blades
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The present invention provides a kind of variable speed last-stage moving blade of air-cooled steam turbine, is variable cross-section twisted blade, including shroud, blade and blade root；From the bottom of blade to top, the characteristic parameter of each characteristic cross-section is changed by following rule：Maximum gauge b is decreased to 4.10mm by 17.57mm dullnesses, and molded line width Wx is decreased to 47.78mm by 160.98mm dullnesses, and chord length c is by 166.39mm monotone decreasings to 103.57mm, and sectional area A is by 2336.58mm2Dullness is decreased to 346.58mm2, established angle a is decreased to 26.16 ° by 75.45 ° of dullnesses, and leading edge arc section radius r1 is decreased to 0.78mm by 3.16mm dullnesses, and lagging edge arc section radius r2 is decreased to 0.54mm by 2.17mm dullnesses.The maximum speed of the present invention can reach 6000r/min.
Description
Technical field
The present invention relates to a kind of steam turbine blade, more particularly to a kind of variable speed last-stage moving blade of air-cooled steam turbine.
Background technology
Steam turbine blade is the important process component being assemblied on impeller.As domestic electrical industry is air-cooled to variable speed
The demand of steam turbine is continuously increased, and puts forward increasingly higher demands to its high efficiency, security reliability.The air-cooled vapour of variable speed
Turbine has that back pressure is high, variable working condition range is big and outstanding economy, the service requirement of safety relative to wet type cooling unit,
And these requirements are largely closely related with final stage moving blade, thus more limitations are proposed to final stage moving blade, it
Its heating power, aeroperformance and strength vibration characteristic etc. must be taken into account by asking.
At present, rarely has breakthrough on variable speed last-stage moving blade of air-cooled steam turbine both at home and abroad, rotating speed has focused largely on 3000
In the range of~5500r/min, it is difficult to reach higher rotating speed, higher end load can not be met.
Invention content
In view of the foregoing deficiencies of prior art, the technical problem to be solved in the present invention is to provide a kind of variable speed sky
Cold last stage rotor blade of steam turbine to meet more high-revolving requirement, and disclosure satisfy that higher end load.
In order to solve the above technical problem, the present invention provides a kind of variable speed last-stage moving blade of air-cooled steam turbine, are cut to become
Face twisted blade, including shroud, blade and blade root, shroud is arranged at the top of blade, and blade root is arranged on blade bottom, the leaf
Body is folded and is formed from its bottom to its top relative torsion and the area that smoothly transits by multiple characteristic cross-sections, and the characteristic cross-section is by interior
Curved line segment, lagging edge arc section, the curved line segment of the back of the body and leading edge arc section join end to end surround successively；
From the bottom of blade to top, the characteristic parameter of each characteristic cross-section is changed by following rule：Maximum gauge b by
17.57mm dullnesses are decreased to 4.10mm, and molded line width Wx is decreased to 47.78mm by 160.98mm dullnesses, and chord length c is by 166.39mm
Monotone decreasing is to 103.57mm, and sectional area A is by 2336.58mm2Dullness is decreased to 346.58mm2, established angle a is by 75.45 ° of dullnesses
Be decreased to 26.16 °, leading edge arc section radius r1 is decreased to 0.78mm by 3.16mm dullnesses, lagging edge arc section radius r2 by
2.17mm dullnesses are decreased to 0.54mm.
Preferably, the effective height H of the blade is 500mm.
Preferably, the thickness h of the shroud is 8mm.
Preferably, the both sides of the blade are respectively equipped with the boss being laterally extended, and the cross section of boss is oval, boss
It is integrally formed with blade.
Preferably, the major axis radius k of the boss end elliptical, minor axis radius j are respectively 7mm and 4mm.
Preferably, the distance L of the boss to blade bottom is 300mm.
Preferably, the blade root is three tooth fir-tree roots, and axial width W is 200mm, and established angle R is 14.4 °.
Preferably, it is additionally provided with intermediate between the blade and blade root.
Preferably, the shroud, the blade, the intermediate and the blade root are integrally formed.
Preferably, the curved line segment of the back of the body of the blade is equipped with laser hardening part at leading edge.
As described above, the variable speed last-stage moving blade of air-cooled steam turbine of the present invention, has the advantages that：
1st, the present invention uses full Three -dimension flow designing technique, takes into account blade static strength so that under rated designs operating mode, energy
It is enough safe and reliable in the range of 2200~6000r/min, and defined stage efficiency can be reached.
2nd, blade is designed using the structure type of whole circle interlocked blade, reduces blade from exciting and dynamic stress so that
Blade can reach 187.47t/ (hm in end load under maximum speed2)。
3rd, blade root uses three novel tooth fir-tree types, significantly reduces the peak stress of blade root and blade root slot, further
Improve the security reliability of blade.
Description of the drawings
Fig. 1 is shown as the structure diagram of the present invention.
Fig. 2 is shown as the side view of Fig. 1.
Fig. 3 is shown as the structure diagram of shroud.
Fig. 4 is shown as the coupling schematic diagram of two circumferentially-adjacent shrouds.
Fig. 5 is shown as the structure diagram of boss section.
Fig. 6 is shown as the cooperation schematic diagram of two circumferentially-adjacent boss.
Fig. 7 is shown as the structure diagram of intermediate.
Fig. 8 is shown as the structure diagram of blade root.
Fig. 9 is shown as the characteristic parameter schematic diagram of the characteristic cross-section of blade.
Figure 10 is shown as the self-locking connection diagram of circumferentially-adjacent variable speed last-stage moving blade of air-cooled steam turbine.
Component label instructions
1 shroud
1a coupling front ends
1b couples rear end
2 boss
2a coordinates front end
2b coordinates rear end
3 blades
4 intermediates
5 blade roots
6 leading edges
7 lagging edges
The 8 curved line segments of the back of the body are at leading edge
9 leading edge arc sections
The 10 curved line segments of the back of the body
11 lagging edge arc sections
12 inner arc curved sections
The thickness of h shrouds
The height of H blades
With a distance from characteristic cross-section of the L boss from blade bottom
K major axis radius
J minor axis radius
The axial width of W blade roots
The established angle of R blade roots
The maximum gauge of b blades
The molded line width of Wx blades
The pitch of p blades
The chord length of c blades
The sectional area of A blades
The established angle of a blades
The leading edge arc section radius of r1 blades
The lagging edge arc section radius of r2 blades
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
It please refers to Fig.1 to Figure 10.It should be clear that structure, ratio, size depicted in this specification institute attached drawing etc., are only used
To coordinate the revealed content of specification, so that those skilled in the art understands and reads, being not limited to the present invention can
The qualifications of implementation, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
It is whole, in the case where not influencing the effect of present invention can be generated and the purpose that can reach, should all still fall in disclosed skill
In the range of art content can cover.Meanwhile in this specification it is cited as " on ", " under ", "left", "right", " centre " and
The term of " one " etc. is merely convenient to understanding rather than to limit the enforceable range of the present invention for narration, relativeness
It is altered or modified, in the case where changing technology contents without essence, when being also considered as the enforceable scope of the present invention.
As shown in Fig. 1,2,9, the present invention provides a kind of variable speed last-stage moving blade of air-cooled steam turbine, is variable cross-section bending leaf
Piece, including shroud 1, blade 3 and blade root 5, shroud 1 is arranged on the top of blade 3, and blade root 5 is arranged on 3 bottom of blade, blade 3 by
Multiple characteristic cross-sections are folded and to be formed from its bottom to its top relative torsion and the area that smoothly transits, and characteristic cross-section is by inner arc curved section
12nd, lagging edge arc section 11, the curved line segment 10 of the back of the body and leading edge arc section 9 join end to end surround successively.
In the specific implementation, the height H of blade 3 is 500mm, the distance at the midpoint of 3 short transverse of blade to impeller axis
For 670mm, i.e., average diameter is 1340mm, and the circular passage area that blade 3 is formed is 2.105m2.This blade further includes
Intermediate 4, intermediate 4 are located at as connecting component between blade 3 and blade root 5.In addition, it is set using dedicated through-flow design program
Counted the characteristic parameter and installation site of each characteristic cross-section of blade 3, then by full ternary pneumatic design software to its into
Capable through-flow design optimization.The situation of the static strength of this blade is taken into account while each characteristic cross-section of guarantee outstanding aeroperformance
Under, molded line width Wx, the sectional area A of characteristic cross-section are gradually reduced, and characteristic cross-section edge by 3 bottom of blade to 3 top of blade
3 short transverse of blade seamlessly transits product and folds, and with certain relative torsion characteristic.As shown in figure 9, the characteristic cross-section of blade 3
Mainly there is following characteristics parameter：
Maximum gauge b：In characteristic cross-section, the maximum of the circle tangent simultaneously with carrying on the back curved line segment 10, inner arc curved section 12 is straight
Diameter；
Molded line width Wx：Width of the characteristic cross-section along impeller axial direction；
Pitch P：The circumferential spacing of adjacent blade 3；
Chord length c：The leading edge 6 of blade 3 and the spacing of lagging edge 7；
Sectional area A：The area of characteristic cross-section；
Established angle a：Chord length c directions and the complementary angle of the angle of impeller axial direction；
Leading edge arc section radius r1：The radius of 6 profile of leading edge；
Lagging edge arc section radius r2：The radius of 7 profile of lagging edge.
From 3 bottom of blade to 3 top of blade, the characteristic parameter of each characteristic cross-section is changed by following rule：Maximum gauge b
4.10mm is decreased to by 17.57mm dullnesses, molded line width Wx is decreased to 47.78mm by 160.98mm dullnesses, chord length c by
166.39mm monotone decreasings are to 103.57mm, and sectional area A is by 2336.58mm2Dullness is decreased to 346.58mm2, established angle a by
75.45 ° of dullnesses are decreased to 26.16 °, and leading edge arc section radius r1 is decreased to 0.78mm, lagging edge circular arc by 3.16mm dullnesses
Section radius r2 is decreased to 0.54mm by 2.17mm dullnesses, and pitch P is increased monotonically by 43.98mm to 96.34mm.
The present invention has the technical characterstics such as high rotating speed, high end load, high efficiency：This blade is resistance to very high end load
While by property, there is outstanding aerodynamic characteristic.It is calculated through Three -dimension flow, this blade is in back pressure 0.15bar, exit Mach number
Reach peak efficiency under 0.6 operating mode.Declared working condition adjustable extent is adapted in 4500~6000r/min of rotating speed, and energy
Enough the end load limit is allowed to reach 187.47t/ (hm2), the range of speeds for allowing normal operating condition is 2200~6000r/
min；Reasonable in design, blade is easy to assembly, and strength grade is high, and usable range is big, has a vast market application prospect.
In preferred embodiment, as shown in Figure 2,3,1 both ends of shroud are equipped with coupling front end 1a and coupling rear end 1b, shroud 1
Thickness h be 8mm；As shown in Fig. 2,5, the both sides of blade 3 are respectively equipped with the boss 2 being laterally extended, and the cross section of boss 2 is ellipse
Circle, boss 2 are 300mm from 3 bottom distance L of blade, and boss 2 is integrally formed with blade 3, before 2 both ends of boss are equipped with cooperation
2a and cooperation rear end 2b are held, the cooperation front end 2a and cooperation rear end 2b of boss 2 are that major axis radius k, minor axis radius j are respectively
The ellipse of 7mm and 4mm.
This blade using whole circle interlocked blade structure type, by 1 shape of shroud and thickness and boss 2
Shape and the optimization design of position are finally obtained outstanding strength vibration characteristic, improve the strength vibration characteristic of this blade.
In the specific implementation, as shown in Fig. 4,6,10, this blade is that the whole circle self-locking of included shroud 1, boss 2 is come into leaves
Piece, under static, in fit-state, boss 2 between the coupling front end 1a of the shroud 1 of circumferentially-adjacent two blades and coupling rear end 1b
Cooperation front end 2a and coordinate rear end 2b between gap be 0.25mm；During work, the gap of shroud 1 is 0mm, between boss 2
Gap is also 0mm.Under the influence of centrifugal force, this blade can generate anti-twisted, and the anti-twisted coupling front end 1a that can make shroud 1 and coupling
Rear end 1b intercouples, while the cooperation front end 2a and cooperation rear end 2b of boss 2 can also be made to cooperate, so as to generate contact force
And frictional force, the damping between blade is increased, achievees the effect that whole circle self-locking.Whole circle self-locking has the following advantages：Increase leaf
The rigidity of chip level, is turned up resonance pitch diameter, and damping can minimize self-excited vibration, further reduce dynamic stress.
In preferred embodiment, as shown in Fig. 2,7,8, blade root 5 is three tooth fir-tree roots, mainly there is following characteristics ginseng
Number：
Axial width W：Width of the blade root 5 along impeller axial direction；
Established angle R：4 length direction of intermediate and the angle of impeller axial direction.
In order to further reduce the peak stress of blade root 5, wheel rim to improve the low-cycle fatigue life of blade, existing three
On the basis of tooth fir-tree root, the full-scale optimization of blade root 5 is carried out using finite element technique.Comprehensive blade root 5 and the blade root of impeller
Slot (installation opening for being used to assemble this blade on impeller) contact area, the fit clearance of blade root 5 and blade root slot, 5 each tooth of blade root
Fillet size and each tooth the reference features such as stress concentration, the item that optimizes of blade root 5 is optimized, while consider leaf
Root 5, the mean stress of blade root slot and the wrapping property for blade 3 obtain three novel tooth fir-tree roots, axial width
W is 200mm, and established angle R is 14.4 °.It is so designed that, reduces the peak stress of the blade root slot of impeller, further improve this
The security reliability of blade enables blade to reach 187.47t/ in the range of 2200~6000r/min of rotating speed and in end load
(h·m2) operating mode under safe operation, have a vast market application prospect.
In preferred embodiment, shroud 1, blade 3, intermediate 4 and blade root 5 are integrally formed.It is so designed that, avoids whole
The residual stress of the welding of a blade.
In preferred embodiment, as shown in figure 5, considering influence of the water erosion to blade construction, the curved line segment of the back of the body of blade 3 leans on
8 are equipped with laser hardening part at nearly leading edge.In the specific implementation, hardening height is decided according to the actual requirements.
In conclusion the maximum speed of the present invention can reach 6000r/min, and disclosure satisfy that higher end load.Institute
With the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (10)
1. it is variable cross-section twisted blade a kind of variable speed last-stage moving blade of air-cooled steam turbine, including shroud, blade and blade root,
Shroud is arranged at the top of blade, and blade root is arranged on blade bottom, and the blade is by multiple characteristic cross-sections from its bottom to its top
The relative torsion and area that smoothly transits is folded to be formed, the characteristic cross-section is by inner arc curved section, lagging edge arc section, the curved line segment of the back of the body
And leading edge arc section joins end to end surround successively；It is characterized in that：
From the bottom of blade to top, the characteristic parameter of each characteristic cross-section is changed by following rule：Maximum gauge b by
17.57mm dullnesses are decreased to 4.10mm, and molded line width Wx is decreased to 47.78mm by 160.98mm dullnesses, and chord length c is by 166.39mm
Monotone decreasing is to 103.57mm, and sectional area A is by 2336.58mm2Dullness is decreased to 346.58mm2, established angle a is by 75.45 ° of dullnesses
Be decreased to 26.16 °, leading edge arc section radius r1 is decreased to 0.78mm by 3.16mm dullnesses, lagging edge arc section radius r2 by
2.17mm dullnesses are decreased to 0.54mm.
2. variable speed last-stage moving blade of air-cooled steam turbine according to claim 1, it is characterised in that：The blade it is effective
Height H is 500mm.
3. variable speed last-stage moving blade of air-cooled steam turbine according to claim 1, it is characterised in that：The thickness of the shroud
H is 8mm.
4. variable speed last-stage moving blade of air-cooled steam turbine according to claim 1, it is characterised in that：The both sides of the blade
The boss being laterally extended is respectively equipped with, the cross section of boss is ellipse, and boss is integrally formed with blade.
5. variable speed last-stage moving blade of air-cooled steam turbine according to claim 4, it is characterised in that：The boss end is ellipse
Round major axis radius k, minor axis radius j is respectively 7mm and 4mm.
6. variable speed last-stage moving blade of air-cooled steam turbine according to claim 4, it is characterised in that：The boss is to blade
The distance L of bottom is 300mm.
7. variable speed last-stage moving blade of air-cooled steam turbine according to claim 1, it is characterised in that：The blade root is three teeth
Fir-tree root, axial width W are 200mm, and established angle R is 14.4 °.
8. variable speed last-stage moving blade of air-cooled steam turbine according to claim 1, it is characterised in that：The blade and blade root
Between be additionally provided with intermediate.
9. variable speed last-stage moving blade of air-cooled steam turbine according to claim 8, it is characterised in that：It is the shroud, described
Blade, the intermediate and the blade root are integrally formed.
10. variable speed last-stage moving blade of air-cooled steam turbine according to claim 1, it is characterised in that：The back of the body of the blade
Curved line segment is equipped with laser hardening part at leading edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611185418.XA CN108204249A (en) | 2016-12-20 | 2016-12-20 | Variable speed last-stage moving blade of air-cooled steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611185418.XA CN108204249A (en) | 2016-12-20 | 2016-12-20 | Variable speed last-stage moving blade of air-cooled steam turbine |
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| Publication Number | Publication Date |
|---|---|
| CN108204249A true CN108204249A (en) | 2018-06-26 |
Family
ID=62603485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611185418.XA Pending CN108204249A (en) | 2016-12-20 | 2016-12-20 | Variable speed last-stage moving blade of air-cooled steam turbine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109063352A (en) * | 2018-08-10 | 2018-12-21 | 上海汽轮机厂有限公司 | The method for improving turbine blade type face fairing degree |
| CN110578556A (en) * | 2019-09-25 | 2019-12-17 | 西安陕鼓动力股份有限公司 | Moving blade with long and short wings and rotor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793167A (en) * | 2009-11-26 | 2010-08-04 | 东方电气集团东方汽轮机有限公司 | Last-stage moving blade of air-cooled steam turbine |
| CN103742203A (en) * | 2014-02-11 | 2014-04-23 | 上海电气电站设备有限公司 | Final-stage long blade of steam turbine |
| CN104196573A (en) * | 2014-07-28 | 2014-12-10 | 杭州汽轮机股份有限公司 | Low-pressure last stage blade of rotating speed-variable air cooling industrial steam turbine with steam exhaust area of 3.6 m2 |
| CN206458508U (en) * | 2016-12-20 | 2017-09-01 | 上海汽轮机厂有限公司 | Variable speed last-stage moving blade of air-cooled steam turbine |
-
2016
- 2016-12-20 CN CN201611185418.XA patent/CN108204249A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793167A (en) * | 2009-11-26 | 2010-08-04 | 东方电气集团东方汽轮机有限公司 | Last-stage moving blade of air-cooled steam turbine |
| CN103742203A (en) * | 2014-02-11 | 2014-04-23 | 上海电气电站设备有限公司 | Final-stage long blade of steam turbine |
| CN104196573A (en) * | 2014-07-28 | 2014-12-10 | 杭州汽轮机股份有限公司 | Low-pressure last stage blade of rotating speed-variable air cooling industrial steam turbine with steam exhaust area of 3.6 m2 |
| CN206458508U (en) * | 2016-12-20 | 2017-09-01 | 上海汽轮机厂有限公司 | Variable speed last-stage moving blade of air-cooled steam turbine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109063352A (en) * | 2018-08-10 | 2018-12-21 | 上海汽轮机厂有限公司 | The method for improving turbine blade type face fairing degree |
| CN109063352B (en) * | 2018-08-10 | 2023-01-06 | 上海汽轮机厂有限公司 | Method for improving surface smoothness of turbine blade profile |
| CN110578556A (en) * | 2019-09-25 | 2019-12-17 | 西安陕鼓动力股份有限公司 | Moving blade with long and short wings and rotor |
| CN110578556B (en) * | 2019-09-25 | 2024-03-26 | 西安陕鼓动力股份有限公司 | Moving blade with long and short wings and rotor |
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