CN109989792A - Full rotary speed steam turbine final stage moving blade - Google Patents
Full rotary speed steam turbine final stage moving blade Download PDFInfo
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- CN109989792A CN109989792A CN201910439074.8A CN201910439074A CN109989792A CN 109989792 A CN109989792 A CN 109989792A CN 201910439074 A CN201910439074 A CN 201910439074A CN 109989792 A CN109989792 A CN 109989792A
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- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 15
- 238000005242 forging Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 238000013532 laser treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000011282 treatment 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
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- 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
- F01D5/141—Shape, i.e. outer, aerodynamic form
-
- 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
- F01D5/12—Blades
- F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
- F01D5/225—Blade-to-blade connections, e.g. for damping vibrations by shrouding
-
- 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
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Architecture (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
A kind of full rotary speed steam turbine final stage moving blade of the invention is related to a kind of turbine blade, in order to overcome the problems, such as that the increase of thermal power steam turbine capacity is equipped with more low pressure (LP) cylinders, specifically include blade working part, blade root, shroud and laser treated region；Blade root, blade working part, shroud and die forging from the bottom to top are integrated, and the molded line of blade working part is variable cross-section twisted blade, and area of section of the blade working part from root to top is gradually reduced；Laser treated region is located at the steam admission side on blade working part top.And final stage moving blade is titanium alloy blade.
Description
Technical field
The present invention relates to turbine blades, and in particular to a kind of final stage moving blade of overlength.
Background technique
As the increase of thermal power steam turbine capacity then needs steam turbine equipped with more to guarantee gas turbine exhaust gas
Low pressure (LP) cylinder, but the single-machine capacity of unit is not only reduced in this way, and the occupied area of steam turbine is also allowed to become much larger.
Summary of the invention
The purpose of the invention is to overcome the problems, such as that the increase of thermal power steam turbine capacity is equipped with more low pressure (LP) cylinders,
Provide a kind of full rotary speed steam turbine final stage moving blade.
Full rotary speed steam turbine final stage moving blade of the invention, including blade working part, blade root, shroud and laser treatment
Area；Blade root, blade working part, shroud and die forging from the bottom to top are integrated, and the molded line of blade working part is that variable cross-section turns round leaf
Piece, and area of section of the blade working part from root to top is gradually reduced；Laser treated region is located on blade working part
The steam admission side in portion；
The final stage moving blade is titanium alloy blade；
The height of the blade working part is 1450mm, and the root axial width of blade working part is 448.552mm,
The root diameter (RD) of blade working part is 2100mm, and the leaving area of blade working part is 16.171m2；
The root axial width of the blade working part to top axial width variation range be 448.552mm~
72.716mm, chord length variation range be 463.874mm~316.509mm, the variation range of established angle be 75.403 °~
23.872 °, the variation range of molded line maximum gauge be 48.777mm~9.801mm, the variation range of inlet angle be 52.483 °~
167.349 °, the variation range of the angle of outlet is 31.575 °~20.430 °；
The blade root is four tooth fir-tree roots, and the axial width of blade root is 575mm；
The shroud with a thickness of 20mm, shroud working face axial distance is 109.592mm.
The beneficial effects of the present invention are:
The present invention provides an overlength full speed movable vane pieces between 1400~1500mm, have bigger leaving area,
660MW supercritical pressure turbine can be guaranteed only with two steam drains, 1300MW supercritical turbine only with four steam discharges
Mouthful, the single-machine capacity of unit can be effectively improved, so as to make Steam Turbine reduce low pressure (LP) cylinder quantity on the basis of original.
Also, the present invention uses fluid dynamic and structural strength complex optimum, and it is excellent to solve pneumatic/structure-integrated design
Change problem makes the flow efficiency of 1450mm blade and strength vibration characteristic all reach more excellent；Also, use advanced full three-dimensional
Pneumatic design method and finite element method design and carry out necessary experimental study, using blade made of titanium alloy in skill
Reach and the comparable degree of full speed steam turbine mainstream steel linear leaf in the world today in art level.The present invention is in the world at present
Longest full speed final stage moving blade not only improves the competitiveness of China's extra-supercritical unit, while to develop more powerful machine
Group provides possibility.
Detailed description of the invention
Fig. 1 is the schematic view of the front view of full rotary speed steam turbine final stage moving blade of the invention；
Fig. 2 is the overlooking structure diagram of shroud；
Fig. 3 is the tomography iterative structure schematic diagram in each section in blade working part；
Fig. 4 is the overlooking structure diagram of boss tie pieces and the cross-sectional view of boss tie pieces；
Fig. 5 is the structural schematic diagram in the one of section in blade working part；
Fig. 6 is the partial enlargement structural representation of I part in Fig. 5；
Fig. 7 is the partial enlargement structural representation of II part in Fig. 5.
Specific embodiment
Specific embodiment 1: as depicted in figs. 1 and 2, the full rotary speed steam turbine final stage moving blade of present embodiment, including
Blade working part 1, blade root 2, shroud 3 and laser treated region 4；Blade root 2, blade working part 1, shroud 3 and mould from the bottom to top
Forging is integrated, and the molded line of blade working part 1 is variable cross-section twisted blade, and section of the blade working part 1 from root to top
Area is gradually reduced；Laser treated region 4 is located at the steam admission side on 1 top of blade working part；
Final stage moving blade is titanium alloy blade；
The height L of blade working part 1 is 1450mm, and the root axial width V of blade working part 1 is 448.552mm,
The root diameter (RD) of blade working part 1 is 2100mm, and the leaving area of blade working part 1 is 16.171m2；
The variation range of the root axial width V to top axial width V1 of blade working part 1 be 448.552mm~
72.716mm, chord length b variation range be 463.874mm~316.509mm, established angle βyVariation range be 75.403 °~
23.872 °, the variation range of molded line maximum gauge T be 48.777mm~9.801mm, the variation range of inlet angle α is 52.483 °
~167.349 °, the variation range of angle of outlet θ is 31.575 °~20.430 °；
Blade root 2 is four tooth fir-tree roots, and the axial width W of blade root 2 is 575mm；
The thickness h of shroud 3 is 20mm, and 3 working face axial distance B1 of shroud is 109.592mm.
Specifically, parameter is gone back while guaranteeing that the contour structure size of blade meets design requirement using the above structure
Blade can be made to be easy assembly.
Also, last stage movable vane chip size determines the quantity of turbine low pressure cylinder, increases the length of exhaust stage blade in addition to can
To significantly improve outside unit efficiency, low pressure (LP) cylinder quantity can also be reduced, and then reduce the construction cost of thermal power plant.
In the present embodiment, the molded line of blade working part 1 is variable cross-section twisted blade, i.e., has opposite torsion between adjacent two sections
Turn, area of section of the blade working part 1 from root to top is gradually reduced.
The steam admission side on 1 top of blade working part is equipped with laser treated region 4, and laser treated region 4 is for preventing water erosion, laser
The principle for the treatment of region 4 is solution strengthening, i.e., solute atoms, which dissolves in parent metal, improves its resistance of deformation, with high energy laser beam,
The dissolution and precipitation for controlling the metallic compound in material, change its distribution, achieve the purpose that reinforcing, and pass through laser
The blade of reinforcing no longer needs to seting welding carbide.
The top of blade working part 1 is the shroud 3 of self-crown damping；(pine assembly is exactly phase for entire movable vane piece pine assembly
The shroud and shroud of adjacent movable vane piece do not contact between lacing wire and lacing wire), by twist recovery when operation, adjacent movable vane piece is enclosed
Band and shroud contact, lacing wire and lacing wire contact, make movable vane piece form round linking.
The final stage moving blade of present embodiment, it is easy to assembly using included 3 structure of shroud, movable vane is made by pretwist assembly
Piece forms round linking, pitch diameter number upper frequency can be made to increase or decrease by increasing and decreasing 3 mass of shroud, be conducive to frequency modulation, run
Securely and reliably.
Final stage moving blade is titanium alloy blade, TC4 titanium alloy can be selected to carry out die forging manufacture, and made of titanium alloy
Movable vane piece has the advantages that
(1) density of titanium alloy is about the half of steel, this is allowed under conditions of identical centrifugal force, can using titanium alloy
The efficiency of unit is improved to improve the annulus area of exhaust stage blade with the exhaust stage blade for manufacturing bigger；
(2) titanium alloy has very high intensity, since the density and elasticity modulus of titanium alloy are the half of steel, titanium
The frequency of natural vibration and waveform and steel of alloy are very close；
(3) titanium alloy has good corrosion resistance, be better able to meet low-pressure turbine it is dry/moist steam transition region work
The application requirement of condition condition；
(4) titanium alloy also has good shock resistance and water-fast brush performance, in many cases, can be without waterproof brush
Protection.
Specific embodiment 2: present embodiment is second is that further explanation to embodiment one, in present embodiment, such as
Shown in Fig. 3, Fig. 5~Fig. 7, blade working part 1 by root to top height L respectively 0mm, 243.106mm,
At 418.923mm, 566.999mm, 702.275mm, 830.583mm, 952.361mm, 1189.067mm and 1450mm
The axial width of corresponding blade working part 1 respectively is: 448.552mm, 334.653mm,
243.289mm, 163.004mm, 122.231mm, 98.229mm, 83.093mm, 70.085mm and 72.716mm,
Corresponding chord length b respectively is: 463.874mm, 366.1837mm, 308.008mm, 279.133mm,
274.822mm, 276.829mm, 281.945mm, 296.763mm and 316.509mm,
Corresponding established angle βyRespectively be: 75.403 °, 66.387 °, 52.431 °, 35.892 °, 28.102 °,
25.947 °, 24.073 °, 22.086 ° and 23.872 °,
Corresponding molded line maximum gauge T respectively is: 48.777mm, 48.713mm, 50.284mm, 47.917mm,
37.767mm, 27.254mm, 18.975mm, 11.775mm and 9.801mm,
Corresponding inlet angle α respectively is: 52.483 °, 68.259 °, 99.232 °, 112.661 °, 142.649 °,
145.830 °, 151.441 °, 158.038 ° and 167.349 °,
Corresponding angle of outlet θ respectively is: 31.575 °, 30.022 °, 27.206 °, 24.491 °, 23.012 °,
21.3757 °, 19.735 °, 18.431 ° and 20.430 °.
Specifically, the full rotary speed steam turbine final stage moving blade of present embodiment is that longest full speed final stage is dynamic in the world at present
Blade designs and carries out necessary experimental study using advanced full three-dimensional pneumatic design method and finite element method,
Reach in technical level and the comparable degree of full speed steam turbine mainstream steel linear leaf in the world today.
As shown in figure 3, by blade working part 1 by root to top be divided into as in table one T-T, R-R, N-N, L-L,
There is its corresponding parameter in nine sections J-J, G-G, E-E, C-C and A-A, each section, which includes height L, blade work
Make the axial width, chord length b, established angle β of part 1y, molded line maximum gauge T, inlet angle α and angle of outlet θ.
In Fig. 3, lateral arrows direction is axial direction, and vertical arrow direction is tangential direction.
According to above-mentioned nine cross section parameters, using existing Mathematical Modeling Methods, such as nurbs surface matrix and interpolation, into
Row modeling fitting can manufacture the movable vane piece.
Specific embodiment 3: present embodiment is third is that further explanation to embodiment two, in present embodiment, such as
Fig. 3, Fig. 5~Fig. 7 blade working part 1 by root to top height L respectively 121.624mm, 331.157mm,
At 492.885mm, 634.561mm, 766.512mm, 891.472mm, 1071.217mm and 1308.077mm
The axial width of corresponding blade working part 1 respectively is: 393.572mm, 291.317mm,
204.055mm, 140.090mm, 109.000mm, 89.872mm, 73.727mm and 71.275mm,
Corresponding chord length b respectively is: 415.578mm, 332.254mm, 293.058mm, 275.954mm,
275.214mm, 279.128mm, 288.598mm and 305.718mm,
Corresponding established angle βyRespectively be: 71.593 °, 61.576 °, 44.354 °, 31.170 °, 26.749 °,
25.091 °, 22.574 ° and 22.832 °,
Corresponding molded line maximum gauge T respectively is: 48.334mm, 49.371mm, 50.106mm, 43.586mm,
32.382mm, 22.734mm, 14.199mm and 10.404mm,
Corresponding inlet angle α respectively is: 66.377 °, 69.156 °, 104.272 °, 127.537 °, 141.577 °,
148.262 °, 155.187 ° and 161.323 °,
Corresponding angle of outlet θ respectively is: 31.963 °, 28.599 °, 25.770 °, 23.758 °, 22.204 °,
20.566 °, 18.602 ° and 19.321 °.
Specifically, as shown in figure 3, by blade working part 1 according to table one by root to top in embodiment two
Nine layer cross sections intert segmentation again eight layer cross section of S-S, P-P, M-M, K-K, H-H, F-F, D-D and B-B, and totally ten seven layer cross section, is pressed
Alphabetical inverted order, to aligned on top, increases the accuracy of manufacture by the root of blade working part 1.
Each cross section parameter table of comparisons of table one
Low pressure exhaust hood quantity is mainly determined by low-pressure last stage blade leaving area.Increase exhaust stage blade leaving area, it can
To effectively reduce low pressure (LP) cylinder quantity.By taking 660MW supercritical unit as an example, 900mm blade is applied in the past, and leaving area is
7.35m2, need two four steam discharges of low pressure (LP) cylinder.1450mm blade leaving area is 16.2m2If, can be with using 1450mm blade
Two steam discharges are down to by four steam discharges, that is, reduces by a low pressure (LP) cylinder, manufactory's manufacturing cost and the capital expenditure of user is greatly lowered.
With the increase of blade height, loading coefficient, discharge coefficient and the degree of reaction of low-pressure final stage radially acute variation,
Blade profile of the blade from root close to impulse is transitioned into rapidly the reactionary style blade profile on leaf top.In low-pressure last stage blade runner, often
There is transonic speed even Supersonic Flow, pneumatic design difficulty increases severely.In addition, variable length blade, the Dangerous Frequency for needing to avoid increases
Add, safety frequency band narrows from the width.It allows its vibration frequency accurately to fall in safety zone, needs to deploy area of blade section meticulously
Along the high distribution of leaf and the rigidity of blade.Centrifugal force increases substantially, and more than the strength degree of conventional steel blade, needs to consider
And processing and manufacturing for solving the problems, such as titanium alloy blade etc. there may be.
Specific embodiment 4: present embodiment is fourth is that further explanation to embodiment one, in present embodiment, such as
Shown in Fig. 1, the total height K of blade root 2 is 123.918mm.
Specifically, according to the length of movable vane piece, total height K enables movable vane piece to be packed into wheel rim securely, assembly stablizes,
Securely and reliably.When assembling entire final stage moving blade, lock sheet should be packed at blade root 2 and avoids movable vane piece axial jump.
Specific embodiment 5: present embodiment is fifth is that further explanation to embodiment one, in present embodiment, such as
Shown in Fig. 1 and Fig. 4, final stage moving blade further includes boss tie pieces 5；
Boss tie pieces 5 are located at the middle part of blade working part 1, and the cross section of boss tie pieces 5 is ellipse.
Specific embodiment 6: present embodiment is sixth is that further explanation to embodiment one, in present embodiment, such as
Shown in Fig. 4, the long axis f of boss tie pieces 5 is 40mm, short axle t is 20mm.
Claims (6)
1. full rotary speed steam turbine final stage moving blade, including blade working part (1), blade root (2), shroud (3) and laser treated region
(4)；Blade root (2), blade working part (1), shroud (3) and die forging from the bottom to top are integrated, the molded line of blade working part (1)
For variable cross-section twisted blade, and the area of section of blade working part (1) from root to top is gradually reduced；Laser treated region (4)
Steam admission side positioned at blade working part (1) top；
It is characterized in that,
The final stage moving blade is titanium alloy blade；
The height of the blade working part (1) is 1450mm, and the root axial width of blade working part (1) is
The root diameter (RD) of 448.552mm, blade working part (1) are 2100mm, and the leaving area of blade working part (1) is
16.171m2；
The root axial width of the blade working part (1) to top axial width variation range be 448.552mm~
72.716mm, chord length variation range be 463.874mm~316.509mm, the variation range of established angle be 75.403 °~
23.872 °, the variation range of molded line maximum gauge be 48.777mm~9.801mm, the variation range of inlet angle be 52.483 °~
167.349 °, the variation range of the angle of outlet is 31.575 °~20.430 °；
The blade root (2) is four tooth fir-tree roots, and the axial width of blade root (2) is 575mm；
The shroud (3) with a thickness of 20mm, shroud (3) working face axial distance is 109.592mm.
2. full rotary speed steam turbine final stage moving blade according to claim 1, which is characterized in that
The blade working part (1) by root to top height respectively 0mm, 243.106mm, 418.923mm,
At 566.999mm, 702.275mm, 830.583mm, 952.361mm, 1189.067mm and 1450mm
The axial width of corresponding blade working part (1) respectively is: 448.552mm, 334.653mm,
243.289mm, 163.004mm, 122.231mm, 98.229mm, 83.093mm, 70.085mm and 72.716mm,
Corresponding chord length respectively is: 463.874mm, 366.1837mm, 308.008mm, 279.133mm,
274.822mm, 276.829mm, 281.945mm, 296.763mm and 316.509mm,
Corresponding established angle respectively is: 75.403 °, 66.387 °, 52.431 °, 35.892 °, 28.102 °, 25.947 °,
24.073 °, 22.086 ° and 23.872 °,
Corresponding molded line maximum gauge respectively is: 48.777mm, 48.713mm, 50.284mm, 47.917mm,
37.767mm, 27.254mm, 18.975mm, 11.775mm and 9.801mm,
Corresponding inlet angle respectively is: 52.483 °, 68.259 °, 99.232 °, 112.661 °, 142.649 °,
145.830 °, 151.441 °, 158.038 ° and 167.349 °,
The corresponding angle of outlet respectively is: 31.575 °, 30.022 °, 27.206 °, 24.491 °, 23.012 °,
21.3757 °, 19.735 °, 18.431 ° and 20.430 °.
3. full rotary speed steam turbine final stage moving blade according to claim 2, which is characterized in that
The blade working part (1) by root to top height respectively 121.624mm, 331.157mm, 492.885mm,
At 634.561mm, 766.512mm, 891.472mm, 1071.217mm and 1308.077mm
The axial width of corresponding blade working part (1) respectively is: 393.572mm, 291.317mm,
204.055mm, 140.090mm, 109.000mm, 89.872mm, 73.727mm and 71.275mm,
Corresponding chord length respectively is: 415.578mm, 332.254mm, 293.058mm, 275.954mm, 275.214mm,
279.128mm, 288.598mm and 305.718mm,
Corresponding established angle respectively is: 71.593 °, 61.576 °, 44.354 °, 31.170 °, 26.749 °, 25.091 °,
22.574 ° and 22.832 °,
Corresponding molded line maximum gauge respectively is: 48.334mm, 49.371mm, 50.106mm, 43.586mm,
32.382mm, 22.734mm, 14.199mm and 10.404mm,
Corresponding inlet angle respectively is: 66.377 °, 69.156 °, 104.272 °, 127.537 °, 141.577 °,
148.262 °, 155.187 ° and 161.323 °,
The corresponding angle of outlet respectively is: 31.963 °, 28.599 °, 25.770 °, 23.758 °, 22.204 °, 20.566 °,
18.602 ° and 19.321 °.
4. full rotary speed steam turbine final stage moving blade according to claim 1, which is characterized in that the total height of blade root (2) is
123.918mm。
5. full rotary speed steam turbine final stage moving blade according to claim 1, which is characterized in that final stage moving blade further includes convex
Platform lacing wire (5)；
The boss tie pieces (5) are located at the middle part of blade working part (1), and the cross section of the boss tie pieces (5) is ellipse
Shape.
6. full rotary speed steam turbine overlength 1450mm final stage moving blade according to claim 5, which is characterized in that boss tie pieces
(5) long axis is 40mm, short axle 20mm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911239A (en) * | 2020-09-01 | 2020-11-10 | 杭州汽轮动力集团有限公司 | Full-speed turbine last-stage moving blade |
| CN112160795A (en) * | 2020-10-30 | 2021-01-01 | 杭州汽轮机股份有限公司 | Full-rotating-speed low-pressure-stage moving blade, moving blade group and industrial steam turbine |
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| US4900230A (en) * | 1989-04-27 | 1990-02-13 | Westinghouse Electric Corp. | Low pressure end blade for a low pressure steam turbine |
| US5277549A (en) * | 1992-03-16 | 1994-01-11 | Westinghouse Electric Corp. | Controlled reaction L-2R steam turbine blade |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111911239A (en) * | 2020-09-01 | 2020-11-10 | 杭州汽轮动力集团有限公司 | Full-speed turbine last-stage moving blade |
| CN111911239B (en) * | 2020-09-01 | 2022-07-22 | 杭州汽轮动力集团有限公司 | Full-rotating-speed turbine last-stage moving blade |
| CN112160795A (en) * | 2020-10-30 | 2021-01-01 | 杭州汽轮机股份有限公司 | Full-rotating-speed low-pressure-stage moving blade, moving blade group and industrial steam turbine |
| CN112160795B (en) * | 2020-10-30 | 2021-09-14 | 杭州汽轮机股份有限公司 | Full-rotating-speed low-pressure-stage moving blade, moving blade group and industrial steam turbine |
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