CN208816190U - A kind of 1100mm final stage moving blade for air-cooled steam turbine - Google Patents
A kind of 1100mm final stage moving blade for air-cooled steam turbine Download PDFInfo
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- CN208816190U CN208816190U CN201821151863.9U CN201821151863U CN208816190U CN 208816190 U CN208816190 U CN 208816190U CN 201821151863 U CN201821151863 U CN 201821151863U CN 208816190 U CN208816190 U CN 208816190U
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Abstract
A kind of 1100mm final stage moving blade for air-cooled steam turbine, the utility model relates to the final stage moving blades that a kind of air-cooled steam turbine blade the purpose of this utility model is to provide for a kind of 1100mm, movable vane forms distortion long blade stage along leaf high twist, vane tip is using included shroud, the final stage moving blade of 1100mm, which has, can be reduced loss, it can be reduced gas leakage, unit efficiency can be improved, it cuts easy to assembly, movable vane piece safe and reliable to operation, it includes blade working part, blade root, shroud and boss tie pieces；One is from top to bottom made in shroud, blade working part, boss tie pieces and blade root, the height of blade working part is 1100mm, the root axial width of blade working part is 289.33mm, and the root diameter (RD) of blade working part is φ 1879.6mm, the leaving area 10.30m of blade working part2, the utility model is for air-cooled steam turbine field.
Description
Technical field
The utility model relates to a kind of air-cooled steam turbine blades.
Background technique
Air cooling unit is a kind of typical variable parameter operation unit, and design back-pressure is high and economy range is big, final stage
The operating condition of blade is very severe.Therefore, there is its particularity for the exhaust stage blade of air cooling unit, exploitation more adapts to air-cooled
The exhaust stage blade of the steam turbine market demand becomes certainty, and the series that Ha Qi company has developed 450mm~940mm length is air-cooled
Final blades cover 150MW~1000MW grade unit.But with advances in technology, Air-Cooling Island part cold end optimizes
Raising, unit back pressuce is lower and lower, so need provide be used for air-cooled steam turbine 1100mm final stage moving blade.
Utility model content
The purpose of this utility model is to provide for the final stage moving blade of 1100mm a kind of, and movable vane is formed along leaf high twist and turned round
Bent long blade stage, for vane tip using included shroud, the final stage moving blade of 1100mm, which has, can be reduced loss, can be reduced gas leakage,
Unit efficiency can be improved, movable vane piece easy to assembly, safe and reliable to operation is cut.
It includes blade working part, blade root, shroud and boss tie pieces；Shroud, blade working part, boss tie pieces and leaf
One is from top to bottom made in root, and the molded line of blade working part is variable cross-section twisted blade, and sectional area is gradually subtracted by root to top
It is small, there is relative torsion between adjacent two sections, the height of blade working part is 1100mm, and the root of blade working part is axial wide
Degree is 289.33mm, and the root diameter (RD) of blade working part is φ 1879.6mm, the leaving area of blade working part
10.30m2, blade root is circular arc type fir tree blade root, and the axial width of blade root is 332.81mm, shroud with a thickness of 9mm, shroud
Working face axial distance is 53.34mm.
The utility model has the advantages that: 1, the utility model 1100mm linear leaf with one-dimensional/quasi- three-dimensional/full three-dimensional pneumatic,
Based on thermodynamic analysis calculates, the full three dimensional design of bending united forming is used, movable vane forms distortion linear leaf along leaf high twist
Grade, vane tip reduce loss using included shroud, reduce gas leakage, improve unit efficiency；It is easy to assembly, it is safe and reliable to operation.
The utility model is applied in the full revolving speed thermal power steam turbine group of 660MW grade, can satisfy different regions, different user is to sky
The demand of cold group, greatly strengthens the market competitiveness.
2, the utility model uses fluid dynamic and structural strength complex optimum, solves pneumatic/structure-integrated design
Optimization problem makes the flow efficiency of 1100mm blade and strength vibration characteristic all reach optimal.
3, a circle has 76 movable vane pieces on steam turbine last stage impeller, in economy, strength vibration characteristic, static strength and guarantee
Advanced level is reached in terms of the security reliability of unit.
4, the 1100mm movable vane piece of the utility model is connected using boss tie pieces 4, wing shroud 3, circular arc type fir tree blade root 2
Guarantee that blade bonding strength, blade material use 0Cr15Ni7Cu2MoNbVN steel.Shroud 3, blade root 2 design on it is finer,
Guarantee the safe and highly efficient operation of unit.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model, and Fig. 2 is the top view of shroud 3, and Fig. 3 is blade working part 1
Each section tomography overlaps schematic diagram, and Fig. 4 is the top view of boss tie pieces 4, and Fig. 5 is the signal of 1 typical cross section of blade working part
Figure, Fig. 6 is II partial enlarged view of Fig. 5, and Fig. 7 is I partial enlarged view of Fig. 5.
Specific embodiment
Specific embodiment 1: illustrating present embodiment in conjunction with FIG. 1 to FIG. 5, one kind described in present embodiment is for air-cooled
The 1100mm final stage moving blade of steam turbine, it includes blade working part 1, blade root 2, shroud 3 and boss tie pieces 4；Shroud 3, leaf
One is from top to bottom made in piece working portion 1, boss tie pieces 4 and blade root 2, and the molded line of blade working part 1 is that variable cross-section turns round leaf
Piece, sectional area are gradually reduced by root to top, there is relative torsion between adjacent two sections, and the height L of blade working part 1 is
1100mm, the root axial width V of blade working part 1 are 289.33mm, and the root diameter (RD) of blade working part 1 is φ
1879.6mm, the leaving area 10.30m of blade working part 12, blade root 2 is circular arc type fir tree blade root, the axial width of blade root 2
Degree W is 332.81mm, and the thickness H of shroud 3 is 9mm, and 3 working face axial distance B1 of shroud is 53.34mm.
Specific embodiment 2: illustrating present embodiment in conjunction with FIG. 1 to FIG. 4, one kind described in present embodiment is for air-cooled
The 1100mm final stage moving blade of steam turbine, the top axle of the root axial width V of blade working part 1 to blade working part 1
Variation range to width V1 is 289.33mm~41.48mm, the variation range of chord length b is 291.59mm~196.33mm, peace
Fill angle betayVariation range be 82.89 °~11.95 °, the variation range of molded line maximum gauge T be 28.38mm~5.46mm, into
The variation range of bicker α is 41.34 °~154.71 °, and the variation range of angle of outlet θ is 34.12 °~18.32 °.Using above-mentioned knot
Structure parameter can also make blade be easy assembly while guaranteeing that the contour structure size of blade meets design requirement.Other compositions
And connection relationship is same as the specific embodiment one.
Specific embodiment 3: illustrating present embodiment in conjunction with Fig. 1 and Fig. 2, one kind described in present embodiment is for air-cooled
The 1100mm final stage moving blade of steam turbine, the height L of blade working part 1 be respectively 102.81mm, 205.5mm, 279.93mm,
354.12mm、416.64mm、479.29mm、536.4mm、593.64mm、647.94mm、702.1mm、753.57mm、
The axial width V of the corresponding blade working part 1 in the place 805.04mm, 905.51mm, 1005.13mm, 1105.73mm successively divides
Not are as follows: 289.33mm, 256.40mm, 220.03mm, 191.45mm, 159.93mm, 132.31mm, 108.50mm, 91.85mm,
79.04mm, 69.49mm, 62.06mm, 56.67mm, 52.50mm, 46.45mm, 42.10mm, 41.44mm, corresponding chord length b according to
It is secondary be respectively as follows: 291.59mm, 262.31mm, 232.72mm, 212.03mm, 193.19mm, 181.41mm, 175.50mm,
174.10mm、174.47mm、175.55mm、176.87mm、178.31mm、180.04mm、184.54mm、190.06mm、
196.33mm corresponding established angle βyRespectively be: 82.89 °, 78.04 °, 71.35 °, 64.94 °, 56.26 °, 47.29 °,
38.59 °, 25.25 °, 27.14 °, 23.43 °, 20.56 °, 18.47 °, 16.81 °, 14.40 °, 12.61 °, 11.95 °, it is corresponding
Molded line maximum gauge T respectively is: 28.38mm, 27.81mm, 28.96mm, 30.29mm, 31.74mm, 32.64mm,
30.31mm, 26.09mm, 21.93mm, 17.89mm, 14.19mm, 11.8mm, 10.10mm, 7.37mm, 6.08mm, 5.46mm,
Corresponding inlet angle α respectively is: 41.34 °, 45.92 °, 49.17 °, 59.29 °, 78.44 °, 89.94 °, 108.14 °,
128.54 °, 137.29 °, 143.64 °, 144.77 °, 155.43 °, 152.14 °, 159.03 °, 153.21 °, 154.71 °, institute are right
The angle of outlet θ answered respectively is: 34.12 °, 32.75 °, 31.27 °, 30.29 °, 28.43 °, 26.53 °, 25.65 °,
24.31°,23.57°,22.28°,21.00°,19.92°,19.17°,18.27°,17.01°,18.32°.Join using the above structure
Number can also make blade be easy assembly while guaranteeing that the contour structure size of blade meets design requirement.Other compositions and company
It is the same as one or two specific embodiments to connect relationship.
Specific embodiment 4: illustrating present embodiment in conjunction with FIG. 1 to FIG. 4, one kind described in present embodiment is for air-cooled
The 1100mm final stage moving blade of steam turbine, the total height K of blade root 2 are 105.57mm.This structure enables blade to be packed into securely
Wheel rim, assembly stablize, are safe and reliable.Other compositions and connection relationship are same as the specific embodiment one.
Each section design parameter is as follows:
Claims (4)
1. a kind of 1100mm final stage moving blade for air-cooled steam turbine, it is characterised in that: it include blade working part (1),
Blade root (2), shroud (3) and boss tie pieces (4)；Shroud (3), blade working part (1), boss tie pieces (4) and blade root (2) are by upper
One is made under, the molded line of blade working part (1) is variable cross-section twisted blade, and sectional area is gradually reduced by root to top,
There is relative torsion between adjacent two sections, the height (L) of blade working part (1) is 1100mm, the root of blade working part (1)
Axial width (V) is 289.33mm, and the root diameter (RD) of blade working part (1) is φ 1879.6mm, blade working part (1)
Leaving area 10.30m2, blade root (2) is circular arc type fir tree blade root, and the axial width (W) of blade root (2) is 332.81mm, shroud
(3) thickness (H) is 9mm, and shroud (3) working face axial distance (B1) is 53.34mm.
2. a kind of 1100mm final stage moving blade for air-cooled steam turbine according to claim 1, it is characterised in that: blade work
Root axial width (V) to the variation range of top axial width (V1) of blade working part (1) for making part (1) is
289.33mm~41.48mm, chord length (b) variation range be 291.59mm~196.33mm, established angle (βy) variation range
Variation range for 82.89 °~11.95 °, molded line maximum gauge (T) is 28.38mm~5.46mm, the variation model of inlet angle (α)
Enclosing is 41.34 °~154.71 °, and the variation range of the angle of outlet (θ) is 34.12 °~18.32 °.
3. a kind of 1100mm final stage moving blade for air-cooled steam turbine according to claim 1 or claim 2, it is characterised in that: leaf
The height (L) of piece working portion (1) be respectively 102.81mm, 205.5mm, 279.93mm, 354.12mm, 416.64mm,
479.29mm、536.4mm、593.64mm、647.94mm、702.1mm、753.57mm、805.04mm、905.51mm、
The axial width (V) of the corresponding blade working part (1) in the place 1005.13mm, 1105.73mm respectively is: 289.33mm,
256.40mm、220.03mm、191.45mm、159.93mm、132.31mm、108.50mm、91.85mm、79.04mm、
69.49mm, 62.06mm, 56.67mm, 52.50mm, 46.45mm, 42.10mm, 41.44mm, corresponding chord length (b) are successively distinguished
Are as follows: 291.59mm, 262.31mm, 232.72mm, 212.03mm, 193.19mm, 181.41mm, 175.50mm, 174.10mm,
174.47mm, 175.55mm, 176.87mm, 178.31mm, 180.04mm, 184.54mm, 190.06mm, 196.33mm, it is corresponding
Established angle (βy) respectively be: 82.89 °, 78.04 °, 71.35 °, 64.94 °, 56.26 °, 47.29 °, 38.59 °,
25.25 °, 27.14 °, 23.43 °, 20.56 °, 18.47 °, 16.81 °, 14.40 °, 12.61 °, 11.95 °, corresponding molded line are maximum
Thickness (T) respectively is: 28.38mm, 27.81mm, 28.96mm, 30.29mm, 31.74mm, 32.64mm, 30.31mm,
26.09mm, 21.93mm, 17.89mm, 14.19mm, 11.8mm, 10.10mm, 7.37mm, 6.08mm, 5.46mm, it is corresponding
Inlet angle (α) respectively is: 41.34 °, 45.92 °, 49.17 °, 59.29 °, 78.44 °, 89.94 °, 108.14 °,
128.54 °, 137.29 °, 143.64 °, 144.77 °, 155.43 °, 152.14 °, 159.03 °, 153.21 °, 154.71 °, institute are right
The angle of outlet (θ) answered respectively is: 34.12 °, 32.75 °, 31.27 °, 30.29 °, 28.43 °, 26.53 °, 25.65 °,
24.31°、23.57°、22.28°、21.00°、19.92°、19.17°、18.27°、17.01°、18.32°。
4. a kind of 1100mm final stage moving blade for air-cooled steam turbine according to claim 1, it is characterised in that: blade root
(2) total height (K) is 105.57mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821151863.9U CN208816190U (en) | 2018-07-19 | 2018-07-19 | A kind of 1100mm final stage moving blade for air-cooled steam turbine |
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| CN201821151863.9U CN208816190U (en) | 2018-07-19 | 2018-07-19 | A kind of 1100mm final stage moving blade for air-cooled steam turbine |
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| CN208816190U true CN208816190U (en) | 2019-05-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026169A (en) * | 2018-07-19 | 2018-12-18 | 哈尔滨汽轮机厂有限责任公司 | A kind of 1100mm final stage moving blade for air-cooled steam turbine |
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2018
- 2018-07-19 CN CN201821151863.9U patent/CN208816190U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026169A (en) * | 2018-07-19 | 2018-12-18 | 哈尔滨汽轮机厂有限责任公司 | A kind of 1100mm final stage moving blade for air-cooled steam turbine |
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