CN213478400U - 459mm last-stage moving blade of high-speed turbine for 25 MW-stage environment-friendly energy power generation - Google Patents
459mm last-stage moving blade of high-speed turbine for 25 MW-stage environment-friendly energy power generation Download PDFInfo
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- CN213478400U CN213478400U CN202022845923.0U CN202022845923U CN213478400U CN 213478400 U CN213478400 U CN 213478400U CN 202022845923 U CN202022845923 U CN 202022845923U CN 213478400 U CN213478400 U CN 213478400U
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Abstract
A459 mm last stage moving blade that is used for 25MW level environmental protection energy power generation to use high rotational speed steam turbine relates to steam turbine technical field. In order to solve the problem that the existing final stage blade cannot meet the requirements of the final stage exhaust area and high rotation speed, a 25MW stage environment-friendly energy power generation high rotation speed turbine final stage special blade needs to be newly developed. The full three-dimensional design is adopted, the movable blades are twisted along the blade height to form long blade stages, and the self-contained shroud is adopted at the tops of the blades, so that the loss is reduced, the air leakage is reduced, and the unit efficiency is improved; thereby meeting the requirements of exhaust area and high rotation speed of the final stage. The utility model is suitable for a steam turbine technical field.
Description
Technical Field
The utility model relates to a steam turbine technical field, concretely relates to 459mm last stage moving blade that is used for high rotational speed steam turbine for 25MW level environmental protection energy electricity generation.
Background
With the gradual increase of the capacity of the thermal power turbine, the development of a long final stage blade has become necessary. Because the 25 MW-level environment-friendly energy power generation turbine has higher rotating speed, the existing last-stage blade cannot meet the requirements of the last-stage exhaust area and high rotating speed, and a 25 MW-level environment-friendly energy power generation high-rotating-speed turbine last-stage special blade needs to be newly developed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve present final stage blade and can't satisfy the requirement of final stage exhaust area and high rotational speed, and propose the 459mm final stage moving blade that is used for the high rotational speed steam turbine of 25MW level environmental protection energy electricity generation.
The utility model discloses a 459mm last-stage moving blade of a high-speed steam turbine for 25 MW-level environmental protection energy power generation, which comprises a blade working part, a blade root, a shroud ring and a boss lacing wire; the shroud band, the blade working part and the blade root are die forged into a whole from top to bottom, a boss lacing wire is processed inside the blade working part, the molded line of the blade working part is a twisted blade with a variable cross section, namely, relative torsion exists between two adjacent cross sections, and the cross section area of the blade working part from the root to the top is gradually reduced;
further, the height L of the working part of the blade is 0-459 mm;
further, the axial width V of the root part of the working part of the blade is 20.98 mm-94.9 mm;
further, the root diameter phi of the working part of the blade is 860 mm;
furthermore, the chord length b of the working part of the vane has a variation range of 95.96 mm-73.79 mm;
furthermore, the variation range of the installation angle beta y of the working part of the blade is 82-16.17 degrees;
furthermore, the maximum thickness T of the molded line of the working part of the blade is in the range of 10.65 mm-3.48 mm;
furthermore, the variation range of the inlet angle alpha of the working part of the blade is 57.00-157.09 degrees, and the variation range of the outlet angle theta is 38.01-24.31 degrees;
further, the axial width W of the blade root is 105mm, and the total height K is 38.62 mm;
furthermore, the thickness H of the shroud band is 7mm, and the axial distance B1 of the working face is 21.55 mm.
Compared with the prior art, the utility model following beneficial effect has:
the utility model overcomes the defects of the prior art, adopts the full three-dimensional design, the movable blades are twisted along the blade height to form the long blade stage, and the top of the blade adopts a self-carrying shroud band, thereby reducing the loss, reducing the air leakage and improving the unit efficiency; thereby meeting the requirements of exhaust area and high rotation speed of the final stage.
Drawings
FIG. 1 is a schematic structural diagram of 459mm last stage moving blades of the high-speed steam turbine for 25MW stage environmental protection energy power generation according to the present invention;
FIG. 2 is a plan view of a shroud in 459mm last stage moving blade of the high-speed steam turbine for 25MW stage environmental protection energy power generation according to the present invention;
FIG. 3 is a schematic view showing the superposition of the cross sections of the working parts of the blades in the 459mm last stage moving blade of the high-speed steam turbine for 25MW stage environmental protection energy power generation according to the present invention;
FIG. 4 is a plan view of a tie bar of a convex platform in 459mm last stage moving blade of the high-speed steam turbine for 25MW stage environmental protection energy power generation of the present invention;
FIG. 5 is a schematic cross-sectional view of a blade working portion of a 459mm last stage moving blade of a high-speed steam turbine for 25MW stage environmental protection energy power generation according to the present invention;
FIG. 6 is a partial enlarged view II of 459mm last stage moving blade of the high rotational speed turbine for 25MW stage environmental protection energy power generation according to the present invention in FIG. 5;
FIG. 7 is a partial enlarged view of FIG. 5 showing 459mm last stage moving blades of the high speed turbine for 25MW stage environmental protection energy power generation of the present invention.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 7, and the 459mm last-stage moving blade for the high-speed steam turbine for 25 MW-stage environmental-friendly energy power generation of the embodiment comprises a blade working part 1, a blade root 2, a shroud 3 and a boss lacing wire 4; the shroud band 3, the blade working part 1 and the blade root 2 are die forged into a whole from top to bottom, a boss lacing wire 4 is processed inside the blade working part 1, the molded line of the blade working part 1 is a twisted blade with a variable cross section, namely, relative torsion exists between two adjacent cross sections, and the cross section area of the blade working part 1 from the root to the top is gradually reduced;
according to the specific embodiment, a full three-dimensional design is adopted, the movable blades form a long blade stage along the blade high distortion, and the top of each blade is provided with a self-contained shroud, so that the loss is reduced, the air leakage is reduced, and the unit efficiency is improved; the assembly is convenient, and the operation is safe and reliable; and comprehensive optimization of fluid power and structural strength is adopted, the problem of optimization of pneumatic/structural integrated design is solved, and the flow efficiency and the strength vibration characteristic of the 459mm blade are optimal.
The second embodiment is as follows: the present embodiment will be described with reference to fig. 1, and the present embodiment is a further limitation of the blade according to the first embodiment, and in the 459mm last stage moving blade for the high speed turbine for 25MW stage eco-power generation according to the present embodiment, the height L of the blade operating part 1 is 0mm to 459 mm.
The third concrete implementation mode: the present embodiment will be described with reference to fig. 1, and the present embodiment is a further limitation of the blade according to the second embodiment, in which the blade working portion 1 has a root axial width V of 20.98mm to 94.9mm in the 459mm last-stage moving blade for the high speed turbine for 25 MW-stage eco-energy power generation according to the present embodiment;
in the specific embodiment, the axial width V of the root part of the working part 1 of the blade is 20.98-94.9 mm, so that the blade can be easily assembled while the appearance structure size of the blade meets the design requirement.
The fourth concrete implementation mode: the present embodiment will be described with reference to fig. 1, and the present embodiment is a further limitation of the blade according to the third embodiment, and in the 459mm last stage moving blade for the high speed turbine for 25MW stage eco-friendly energy power generation according to the present embodiment, the root diameter Φ of the blade working portion 1 is 860 mm.
The fifth concrete implementation mode: the present embodiment will be described with reference to fig. 1, and the present embodiment is a further limitation to the blade according to the fourth embodiment, and in the 459mm last-stage moving blade for the high speed turbine for 25 MW-stage eco-energy power generation according to the present embodiment, the range of variation of the chord length b of the blade operating portion 1 is 95.96mm to 73.79 mm.
The sixth specific implementation mode: the present embodiment will be described with reference to fig. 1, which is a further limitation of the blade according to the fifth embodiment, and in the 459mm last-stage moving blade for the high speed turbine for 25 MW-stage eco-energy power generation according to the present embodiment, the range of variation of the installation angle β y of the blade operating portion 1 is 82 ° to 16.17 °.
The seventh embodiment: the present embodiment will be described with reference to fig. 1, and the present embodiment is a further limitation of the blade according to the sixth embodiment, and in the 459mm last-stage moving blade for the high speed turbine for 25 MW-stage eco-energy power generation according to the present embodiment, the maximum profile thickness T of the blade operating portion 1 ranges from 10.65mm to 3.48 mm.
The specific implementation mode is eight: the present embodiment is described with reference to fig. 1, and is further limited to the blade according to the seventh embodiment, and the inlet angle α of the blade operating portion 1 of the 459mm last-stage moving blade for the high speed turbine for 25MW stage eco-power generation according to the present embodiment ranges from 57.00 ° to 157.09 °, and the outlet angle θ ranges from 38.01 ° to 24.31 °.
The specific implementation method nine: the present embodiment will be described with reference to fig. 1, which is a further limitation of the blade according to the first embodiment, wherein the blade root 2 has an axial width W of 105mm and a total height K of 38.62mm in the 459mm last-stage moving blade for a high speed turbine for 25MW stage eco-energy power generation according to the present embodiment;
in the embodiment, the axial width W of the blade root 2 is 105mm, and the total height K is 38.62mm, so that the blade can be firmly installed in the wheel rim, and the blade is stable in assembly, safe and reliable.
The detailed implementation mode is ten: the present embodiment will be described with reference to fig. 1, which is a further limitation of the blade according to the first embodiment, and in the 459mm last-stage moving blade for a high-speed turbine for 25 MW-stage eco-energy power generation according to the present embodiment, the shroud 3 has a thickness H of 7mm and a working surface axial distance B1 of 21.55 mm.
The concrete implementation mode eleven: the present embodiment will be described with reference to fig. 1 to 5, and the present embodiment is a further limitation to the blade according to the first embodiment, and specific parameters of the 459mm last stage moving blade for the high rpm steam turbine for 25MW stage eco-friendly energy generation according to the present embodiment are as follows:
Claims (10)
1. a459 mm last stage moving blade for 25MW level environmental protection energy power generation is with high rotational speed steam turbine, its characterized in that: comprises a blade working part (1), a blade root (2), a shroud ring (3) and a boss lacing wire (4); shroud ring (3), blade working portion (1) and blade root (2) are swaged from top to bottom and become an organic whole, and the inside processing of blade working portion (1) has boss lacing wire (4), and the molded lines of blade working portion (1) are variable cross section and turn round the blade, have the relative torsion between two adjacent sections promptly, and the cross sectional area of blade working portion (1) from root to top reduces gradually.
2. The 459mm last stage moving blade for the high rotation speed turbine for 25MW stage eco-friendly energy power generation according to claim 1, wherein: the height L of the blade working part (1) is 0-459 mm.
3. The 459mm last stage moving blade for the high rotation speed turbine for 25MW stage eco-friendly energy power generation according to claim 2, wherein: the axial width V of the root part of the blade working part (1) is 20.98 mm-94.9 mm.
4. The 459mm last stage moving blade for the high rotation speed turbine for 25MW stage eco-friendly energy power generation according to claim 3, wherein: the root diameter phi of the blade working part (1) is 860 mm.
5. The 459mm last stage moving blade for the high rotation speed turbine for 25MW stage eco-friendly energy power generation according to claim 4, wherein: the chord length b of the working part (1) of the vane has a variation range of 95.96 mm-73.79 mm.
6. The 459mm last stage moving blade for the high rotation speed turbine for 25MW stage eco-friendly energy power generation according to claim 5, wherein: the variation range of the installation angle beta y of the blade working part (1) is 82-16.17 degrees.
7. The 459mm last stage moving blade for the high rotation speed turbine for 25MW stage eco-friendly energy power generation according to claim 6, wherein: the maximum thickness T of the molded line of the blade working part (1) is in the range of 10.65-3.48 mm.
8. The 459mm last stage moving blade for the high rotation speed turbine for 25MW stage eco-friendly energy power generation according to claim 7, wherein: the variation range of the inlet angle alpha of the working part (1) of the blade is 57.00-157.09 degrees, and the variation range of the outlet angle theta is 38.01-24.31 degrees.
9. The 459mm last stage moving blade for the high rotation speed turbine for 25MW stage eco-friendly energy power generation according to claim 1, wherein: the axial width W of the blade root (2) is 105mm, and the total height K is 38.62 mm.
10. The 459mm last stage moving blade for the high rotation speed turbine for 25MW stage eco-friendly energy power generation according to claim 1, wherein: the thickness H of the shroud ring (3) is 7mm, and the axial distance B1 of the working face is 21.55 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022845923.0U CN213478400U (en) | 2020-12-01 | 2020-12-01 | 459mm last-stage moving blade of high-speed turbine for 25 MW-stage environment-friendly energy power generation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022845923.0U CN213478400U (en) | 2020-12-01 | 2020-12-01 | 459mm last-stage moving blade of high-speed turbine for 25 MW-stage environment-friendly energy power generation |
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| Publication Number | Publication Date |
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| CN213478400U true CN213478400U (en) | 2021-06-18 |
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| CN202022845923.0U Active CN213478400U (en) | 2020-12-01 | 2020-12-01 | 459mm last-stage moving blade of high-speed turbine for 25 MW-stage environment-friendly energy power generation |
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| CN (1) | CN213478400U (en) |
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