CN108119187A - A kind of industrial steam turbine low-pressure stage movable vane piece of variable speed big flow - Google Patents
A kind of industrial steam turbine low-pressure stage movable vane piece of variable speed big flow Download PDFInfo
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- CN108119187A CN108119187A CN201810141352.7A CN201810141352A CN108119187A CN 108119187 A CN108119187 A CN 108119187A CN 201810141352 A CN201810141352 A CN 201810141352A CN 108119187 A CN108119187 A CN 108119187A
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- blade
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- shroud
- root
- steam turbine
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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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Designed by the present invention is a kind of variable speed big flow industrial steam turbine low-pressure stage movable vane piece, it is that the low-pressure stage movable vane piece of variable speed big flow industrial steam turbine is 3 grades of the end of low-pressure stage, including blade, shroud and blade root, it is characterized in that, the blade, shroud, from top to bottom die forging is integral for blade root, the blade molded line is variable cross-section twisted blade, and the area of section at root to top is gradually reduced, there is relative torsion between adjacent two sections, the volume feature of this structure is that the molded line of blade distorts molded line for variable cross-section, it is coincided by several characteristic cross-sections by feature rule, there is relative torsion between adjacent sections.The present invention can the safe operation under back pressure 5kPa 40kPa, rotating speed 2400rpm 4000rpm, have the characteristics that variable speed varying duty is efficient, strength vibration performance is good, mass flow is big, stable structure, process and assemble are convenient, can be widely applied in the industrial steam turbine of big load variable speed.
Description
Technical field
The present invention relates to a kind of driving industrial steam turbine blade, especially a kind of industrial turbines of variable speed big flow
Machine low-pressure stage movable vane piece.
Background technology
In industrial drives field, key areas, the variable speed big flow such as especially large-scale ethylene, Large Air Separation Devices are powerful
Industrial steam turbine demand is continuously increased, and efficient, safe design gradually highlights importance.Low-pressure stage group blade operating condition is disliked
It is bad, it is necessary to which that satisfaction can be by running under obstruction operating mode to air blast operating mode, therefore low-pressure stage group blade reliability directly affects unit
Safe operation.The designing technique of low-pressure stage group movable vane piece becomes Design of Steam Turbine due to the technology being related to is wide, with high content of technology
In core technology, be related to multiple subjects such as thermodynamics, rational mechanics, hydrodynamics, the mechanics of materials, material.
The molded line of the last 3 grades of movable vane pieces of most of variable rotating speed industrial steam turbine is inefficient before this, and be mostly without shroud,
Which increase leakage losses.In order to increase the damping effect of blade, most of variable rotating speed industrial steam turbine uses loose lacing wire
Structure, make blade-section in groups, loose lacing wire structure adds the collision loss of water vapour, reduces the efficiency of blade.This hair
Bright structure has a great difference with traditional 3 grades of end of variable rotating speed industrial steam turbine movable vane piece.
The content of the invention
The industrial steam turbine of the variable speed big flow designed the purpose of the present invention is to solve the deficiency of above-mentioned technology
Last three-level movable vane piece, the blade have good off design performance and strength vibration performance, while rational in infrastructure, assembling side
Just.
Designed by the present invention is a kind of industrial steam turbine low-pressure stage movable vane piece of variable speed big flow, it is that variable speed is big
The low-pressure stage movable vane piece of flow industrial steam turbine is 3 grades of the end of low-pressure stage, including blade, shroud and blade root, which is characterized in that institute
Stating blade, shroud, blade root, from top to bottom die forging is integral, and the blade molded line is variable cross-section twisted blade, and root to top
Area of section is gradually reduced, and has relative torsion between adjacent two sections, and the height H of the blade working part is 196.0mm, root
Portion axial width V be 78.11mm, root diameter (RD) 535.0mm, top axial width V1 be 52.1mm, the blade steam discharge face
Product is 2.9m2.The volume feature of this structure is that the molded line of blade distorts molded line for variable cross-section, is advised by several characteristic cross-sections by feature
Rule coincides, and the profile molded line of characteristic cross-section is the closed curve surrounded by inner arc curve and the curved line of the back of the body, and section coincides
Rule is along the high direction of leaf from each section continuous and derivable transition in root to top, is gradually subtracted from the area of section at root to top
It is small, there is relative torsion between adjacent sections.
Further embodiment is that the blade shroud band part is Z-type structure, has back of the body arc working face and inner arc working face,
Two working faces are the planes being mutually parallel, and under working condition, back of the body arc working face and the adjacent blades shroud inner arc of shroud work
Face contacts.The working face distance A1 of shroud is 48.46mm, and working face geometric center distance T1 is 67.32mm.The thickness W of shroud
For 7.9mm, axial width C1 is 56.09mm.The characteristic angle α 1 of shroud is 50 °, and the characteristic angle α 2 of shroud is 95 °, transition
Fillet R is 1mm.
Further scheme is, the blade root is T-shaped blade root, and the axial width C of blade root is 111.8mm, blade root it is total
Height K is 127.57mm.
Further embodiment is that blade H high with respect to leaf monotonicallys increase up to 100% by 0%, from blade root section to leaf top
The pitch to chord length in section is than T/b changing rule：0.56≤T/b≤0.77；Pitch from blade root section to leaf top section with
Blade profile section axial width is than T/B changing rule：0.62≤T/B≤1.26；Pitch from blade root section to leaf top section with
Blade profile section maximum gauge is than T/Dmax changing rule： 2.26≤T/B≤7.05；Section from blade root section to leaf top section
Away from blade profile area of section than T/A changing rule be 0.034≤T/A≤0.127；From blade root section to leaf top section established angle β
Excursion for 65.31 °~37.33 °, the excursion of inlet angle α is 39.54≤α≤98.20 °, the variation of angle of outlet θ
Scope is 68.70 °≤θ≤69.46 °.
Further scheme is, blade height is respectively 0,40.0mm, 80.0mm, 120.0mm, 160.0mm,
196.0mm, the axial width of corresponding blade portion are respectively successively：78.11mm, 73.71mm, 69.17mm,
64.19mm, 58.02mm, 52.10mm, corresponding chord length are 86.11mm, 86.07mm, 85.62mm respectively successively,
85.76mm, 85.43mm, 85.38mm, corresponding established angle are 65.31 ° respectively successively, 59.59 °, 54.21 °, 48.45 °,
42.63 °, 37.33 °, corresponding molded line maximum gauge is 21.3mm, 20.0mm, 15.8mm, 12.2mm respectively successively,
9.8mm, 9.3mm, corresponding inlet angle respectively are 39.54 °, 46.46 °, 49.39 °, 63.67 °, 78.11 °,
98.2 °, the corresponding angle of outlet respectively is 68.7 °, 67.24 °, 75.57 °, 68.72 °, 68.15 °, 69.46 °.
The low-pressure stage movable vane piece of the variable speed big flow industrial steam turbine of gained of the invention, using ternary flow field designing technique
It designs, there is certain distortion rule along the high direction of leaf, that is, taken into account the requirement of blade static strength, also so that blade has
Good aeroperformance, blade distortion rule is designed according to three-dimensional flow theory, is closed along each thermal parameter regularity of distribution of blade
Reason is verified through calculating such as professional Fluid Mechanics Computation software for calculation CFX and Numeca, in the scope that back pressure is 5kPa~40kPa
Interior, the pneumatic efficiency of low-pressure stage group is up to 93%.Additionally by conventional stress analysis and three-dimensional finite element intensive analysis result table
Bright, which has enough strength characters, and the gas-flow bending stress under each operating mode is smaller.The blade uses Z-type shroud structure,
Blade twist caused by centrifugal force recovers to form round linking structure when passing through rotation, and this structure eliminates the vibrations of a variety of vibration shapes
Frequency makes Turbine Blade Vibration Mode Shape relatively easy, greatly reduces the dynamic stress of blade, is conducive to dynamic frequency modulation, it is ensured that in a variety of works
Condition is lower can safe and reliable operation.The root of blade is T-shaped blade root, easy to assembly, and carrying is uniform, can make blade and rotor knot
Conjunction is secured, stablizes, can be in back pressure 5kPa~40kPa, below 4000rpm safe operations, which can extensive use
In 100,000 grade more than ultra-large type air separation unit industrial steam turbines, 1,500,000 tons/year of ethylene units with etc. large scale industries steam turbine
In, have a vast market application prospect.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is blading nomenclature figure at Section A-A in Fig. 1；
Fig. 3 is the blade shroud band connection diagram of the present invention；
Fig. 4 is the vane type line schematic diagram of the present invention；
Fig. 5 is adjacent three blade connection diagrams.
Specific embodiment
Below by implementing, with reference to attached drawing, the invention will be further described.
As shown in figures 1 and 3, the low-pressure stage movable vane piece of variable speed big flow industrial steam turbine of the invention, including blade
2nd, shroud 1 and blade root 3, from top to bottom die forging is integral for the blade 2, shroud 1, blade root 3, and 2 molded line of blade is variable cross-section
Twisted blade, and the area of section at root to top is gradually reduced, and has relative torsion between adjacent two sections, the blade is by several spies
Sign section coincides by specific rule, and the profile molded line of characteristic cross-section is that the closing surrounded by inner arc curve and the curved line of the back of the body is bent
Line, the rule that coincides in section are along the high direction of leaf from each section continuous and derivable transition in root to top.The blade height H is
196.0mm, root axial width V be 78.11mm, root diameter (RD) 535.0mm, top axial width V1 be 52.1mm, leaf
Body leaving area is 2.9m2.The axial width C of blade root is 111.8mm.The thickness W of shroud is 7.9mm, shroud axial width C1
For 56.09mm.When assembling entire blade, blade root 3 is installed circumferentially in race；Leaf top carries damping shroud 1, and entire blade is tight
Assembling, is adjacent between the shroud of adjacent blades and shroud contacts in a non-operative state.The shroud working face distance A1 is
48.46mm, working face geometric center distance T1 are 67.32mm.Under working condition, collision and friction resistance between shroud working face
Buddhist nun can consume the resonance energy of blade, substantially reduce the dynamic stress of blade；Blade root 3 be T-shaped blade root, the total height of blade root 3
K is 42.03mm, and this structure enables blade to be packed into wheel rim securely, and contact stablizes, is safe and reliable, proof strength, vibration will
It asks, it is ensured that the long-term safety Effec-tive Function of blade.
As shown in Fig. 2, blade 2 monotonicallys increase up to 100% with respect to the high H of leaf by 0%, the section from blade root section to leaf top section
Away from being with chord ratio T/b changing rules：0.56≤T/b≤0.77；Pitch and blade profile section from blade root section to leaf top section
Axial width is than T/B changing rule：0.62≤T/B≤1.26；Pitch and blade profile section from blade root section to leaf top section
Maximum gauge is than T/Dmax changing rule：2.26≤T/B ≤7.05；Pitch and blade profile from blade root section to leaf top section
Area of section is 0.034≤T/A≤0.127 than T/A changing rule；From blade root section to the variation model of leaf top section established angle β
It encloses for 65.31 °~37.33 °, the excursion of inlet angle α is 39.54≤α≤98.20 °, and the excursion of angle of outlet θ is
68.70°≤θ≤69.46°。
As shown in figure 4, blade 2 is highly respectively 0,40.0mm, 80.0mm, 120.0mm, 160.0mm, 196.0mm, institute
The axial width of corresponding blade portion is respectively successively：78.11mm, 73.71mm, 69.17mm, 64.19mm, 58.02mm,
52.10mm, corresponding chord length are 86.11mm, 86.07mm, 85.62mm, 85.76mm, 85.43mm respectively successively,
85.38mm, corresponding established angle are 65.31 ° respectively successively, 59.59 °, 54.21 °, 48.45 °, 42.63 °, 37.33 °, institute
Corresponding molded line maximum gauge is 21.3mm, 20.0mm, 15.8mm, 12.2mm, 9.8mm, 9.3mm respectively successively, corresponding
Inlet angle respectively is 39.54 °, and 46.46 °, 49.39 °, 63.67 °, 78.11 °, 98.2 °, the corresponding angle of outlet is divided successively
Wei not be 68.7 °, 67.24 °, 75.57 °, 68.72 °, 68.15 °, 69.46 °.
As shown in figure 5,3 adjacent blades connect and compose sector structure.
Wherein 6 blade characteristic cross-section design parameter such as following tables：
Claims (5)
1. a kind of low-pressure stage movable vane piece of variable rotating speed industrial steam turbine, including blade (2), shroud (1) and blade root (3), feature
It is, the blade (2), shroud (1), blade root (3) die forging from top to bottom are integral, and blade (2) molded line is turned round for variable cross-section
Blade, and the area of section at root to top is gradually reduced, and has relative torsion between adjacent two sections, the blade height H is
196.0mm, root axial width V are 78.11mm, and root diameter (RD) 535.0mm, top axial width V1 are 52.1mm, described
Blade (2) leaving area is 2.9m2。
2. the variable speed big flow industrial steam turbine low-pressure stage movable vane piece according to claims 1, it is characterised in that：It is described
Shroud (1) is Z-type structure, and the working face distance A1 of shroud (1) is 48.46mm, and working face geometric center distance T1 is
67.32mm, the thickness W of the shroud is 7.9mm, and axial width C1 is 56.09mm, and the characteristic angle α 1 of the shroud is 50 °,
The characteristic angle α 2 of the shroud is 95 °, and the knuckle R of the shroud is 1mm.
3. the variable speed big flow industrial steam turbine low-pressure stage movable vane piece according to claims 1, which is characterized in that described
Blade root (3) is T-shaped blade root, and the axial width C of the blade root (3) is 111.8mm, and the total height K of the blade root is 127.57mm.
4. the variable speed big flow industrial steam turbine low-pressure stage movable vane piece according to claims 1, which is characterized in that described
The high H of opposite leaf of blade (2) monotonicallys increase up to 100% by 0%, and the pitch to chord length from blade root section to leaf top section compares T/b
Changing rule is：0.56≤T/b≤0.77；Pitch from blade root section to leaf top section compares T/B with blade profile section axial width
Changing rule is：0.62≤T/B≤1.26；Pitch from blade root section to leaf top section compares T/ with blade profile section maximum gauge
DmaxChanging rule is：2.26≤T/B≤7.05；Pitch from blade root section to leaf top section becomes with blade profile area of section than T/A
Law is 0.034≤T/A≤0.127；From blade root section to the excursion of leaf top section established angle β for 65.31 °~
37.33 °, the excursion of inlet angle α is 39.54≤α≤98.20 °, the excursion of angle of outlet θ for 68.70 °≤θ≤
69.46°。
5. the variable speed big flow low-pressure stage of steam turbine movable vane piece according to claims 1,2 or 3, which is characterized in that institute
The height for stating blade (2) is respectively 0,40.0mm, 80.0mm, 120.0mm, 160.0mm, 196.0mm, corresponding blade portion
Axial width be respectively successively：78.11mm, 73.71mm, 69.17mm, 64.19mm, 58.02mm, 52.10mm, it is corresponding
Chord length is 86.11mm, 86.07mm, 85.62mm, 85.76mm, 85.43mm, 85.38mm respectively successively, corresponding established angle
It is 65.31 ° respectively successively, 59.59 °, 54.21 °, 48.45 °, 42.63 °, 37.33 °, corresponding molded line maximum gauge is successively
It is 21.3mm, 20.0mm, 15.8mm, 12.2mm, 9.8mm, 9.3mm respectively, corresponding inlet angle respectively is 39.54 °,
46.46 °, 49.39 °, 63.67 °, 78.11 °, 98.2 °, the corresponding angle of outlet respectively is 68.7 °, 67.24 °,
75.57°,68.72°,68.15°,69.46°。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810141352.7A CN108119187B (en) | 2018-02-11 | 2018-02-11 | Low-pressure-stage moving blade of industrial steam turbine with variable rotation speed and large flow |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810141352.7A CN108119187B (en) | 2018-02-11 | 2018-02-11 | Low-pressure-stage moving blade of industrial steam turbine with variable rotation speed and large flow |
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| CN108119187A true CN108119187A (en) | 2018-06-05 |
| CN108119187B CN108119187B (en) | 2023-10-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109101722A (en) * | 2018-08-09 | 2018-12-28 | 东方电气集团东方汽轮机有限公司 | A kind of turbine blade composite molding design method |
| CN109695479A (en) * | 2018-08-22 | 2019-04-30 | 杭州汽轮机股份有限公司 | A kind of high revolving speed high load capacity low-pressure stage movable vane piece of industrial steam turbine |
| CN111963252A (en) * | 2020-09-03 | 2020-11-20 | 杭州汽轮机股份有限公司 | Secondary and final moving blade and blade assembly of variable-rotating-speed large-flow industrial steam turbine |
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2009120A1 (en) * | 1989-02-03 | 1990-08-03 | Masao Siga | Steam turbine, rotor shaft thereof, and heat resisting steel |
| JP3315800B2 (en) * | 1994-02-22 | 2002-08-19 | 株式会社日立製作所 | Steam turbine power plant and steam turbine |
| CN201581936U (en) * | 2009-11-20 | 2010-09-15 | 哈尔滨汽轮机厂有限责任公司 | Special last-stage vane for large-scale 60Hz 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 |
-
2018
- 2018-02-11 CN CN201810141352.7A patent/CN108119187B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2009120A1 (en) * | 1989-02-03 | 1990-08-03 | Masao Siga | Steam turbine, rotor shaft thereof, and heat resisting steel |
| JP3315800B2 (en) * | 1994-02-22 | 2002-08-19 | 株式会社日立製作所 | Steam turbine power plant and steam turbine |
| CN201581936U (en) * | 2009-11-20 | 2010-09-15 | 哈尔滨汽轮机厂有限责任公司 | Special last-stage vane for large-scale 60Hz 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 |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109101722A (en) * | 2018-08-09 | 2018-12-28 | 东方电气集团东方汽轮机有限公司 | A kind of turbine blade composite molding design method |
| CN109101722B (en) * | 2018-08-09 | 2022-03-22 | 东方电气集团东方汽轮机有限公司 | Composite forming design method for turbine blade |
| CN109695479A (en) * | 2018-08-22 | 2019-04-30 | 杭州汽轮机股份有限公司 | A kind of high revolving speed high load capacity low-pressure stage movable vane piece of industrial steam turbine |
| CN109695479B (en) * | 2018-08-22 | 2023-12-29 | 杭州汽轮动力集团股份有限公司 | High-rotating-speed high-load low-pressure-stage moving blade for industrial steam turbine |
| CN111963252A (en) * | 2020-09-03 | 2020-11-20 | 杭州汽轮机股份有限公司 | Secondary and final moving blade and blade assembly of variable-rotating-speed large-flow industrial steam turbine |
| CN111963252B (en) * | 2020-09-03 | 2023-03-14 | 杭州汽轮动力集团股份有限公司 | Secondary and final moving blade and blade assembly of variable-rotating-speed large-flow industrial steam turbine |
| 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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Address after: 311100 Building 1, No. 608, Kangxin Road, Linping District, Hangzhou, Zhejiang Patentee after: Hangzhou Turbine Power Group Co.,Ltd. Address before: 357 Shiqiao Road, Xiacheng District, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU STEAM TURBINE Co.,Ltd. |
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