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302.24 mm penultimate-stage moving blade for high-rotating-speed biomass power generation steam turbine

A technology of the second and final stage and steam turbine, which is applied in the field of 302.24mm second and last stage moving blades, can solve the problem that it cannot adapt to high-speed biomass power generation steam turbines, the aerodynamic performance of the second and last stage blades is low, and the safety of high-speed biomass power generation units cannot be realized. and other problems, to achieve the effect of enhancing market competitiveness, improving unit efficiency, and reasonable distribution of profile speed

Pending Publication Date: 2021-06-22
HARBIN TURBINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problem that the existing technology cannot realize the safety of high-speed biomass power generating sets, the aerodynamic performance of the second-end stage blades is low, and it cannot adapt to high-speed biomass power generation steam turbines, the invention provides a high-speed biomass power generation steam turbine. The 302.24mm second last stage rotor blade

Method used

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  • 302.24 mm penultimate-stage moving blade for high-rotating-speed biomass power generation steam turbine
  • 302.24 mm penultimate-stage moving blade for high-rotating-speed biomass power generation steam turbine
  • 302.24 mm penultimate-stage moving blade for high-rotating-speed biomass power generation steam turbine

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specific Embodiment approach 1

[0019] Specific implementation mode one: combine Figure 1 to Figure 5 Describe this embodiment, a 302.24mm second-end moving blade for a high-speed biomass power generation steam turbine in this embodiment, which includes a blade working part 1, a blade root 2 and a shroud 3;

[0020] The working part 1 of the blade, the root 2 and the shroud 3 are forged into one body from the top to the bottom. The cross-sectional area of ​​the blade gradually decreases, the height L of the blade working part 1 is 302.24mm, the root axial width V of the blade working part 1 is 47.15mm, the root diameter of the blade working part 1 is φ960.14mm, and the row of the blade working part 1 Gas area 1.20m 2 , the blade root 2 is a helical-toothed fir-tree type blade root, and the axial width W of the blade root 2 is 64.12mm.

[0021] Such setting is that when assembling the entire blade, the locking piece is installed at the root of the blade to prevent the axial movement of the blade; the top o...

specific Embodiment approach 2

[0022] Specific implementation mode two: combination Figure 1 to Figure 5 To illustrate this embodiment, the variation range from the root axial width V of the blade working part 1 to the top axial width V1 of the blade working part 1 is 47.15-19.81mm, and the variation range of the chord length b is 51.57mm-70.67mm. mm, the range of installation angle βy is 68.19°-16.12°, the range of maximum profile thickness T is 16.73mm-5.08mm, the range of inlet angle α is 46.28°-148.46°, and the range of outlet angle θ is 20.14°-15.91°.

[0023] Such setting adopts the above-mentioned structural parameters, which can make the blades easy to assemble while ensuring that the external structure dimensions of the blades meet the design requirements. Others are the same as the first embodiment.

specific Embodiment approach 3

[0024] Specific implementation mode three: combination Figure 1 to Figure 5 Describe this embodiment, the height L of blade working part 1 of this embodiment is respectively 0mm, 67.82mm, 129.66mm, 187.73mm, 244.00mm, 302.24mm, and the axial width V of blade working part 1 corresponding to the place is respectively respectively : 47.15mm, 40.61mm, 32.08mm, 24.14mm, 20.73mm, 19.81mm, the corresponding chord length b is respectively: 51.57mm, 53.10mm, 57.08mm, 63.11mm, 67.60mm, 70.67mm, the corresponding installation angle βy are respectively: 68.19°, 51.77°, 34.67°, 22.94°, 18.53°, 16.12°, and the corresponding maximum thickness T of mold line are: 16.73mm, 13.37mm, 10.43mm, 6.89mm, 5.63mm, 5.08 mm, the corresponding inlet angles α are respectively: 46.28°, 56.37°, 86.64°, 116.44°, 139.91°, 148.46°, and the corresponding outlet angles θ are respectively: 20.14°, 19.04°, 18.76°, 17.04°, 16.10°, 15.91°. Such setting adopts the above-mentioned structural parameters, which can m...

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Abstract

The invention particularly discloses a 302.24 mm penultimate-stage moving blade for a high-rotating-speed biomass power generation steam turbine. The 302.24 mm penultimate-stage moving blade for the high-rotating-speed biomass power generation steam turbine solves the problems that in the prior art, the safety of a high-rotating-speed biomass generator set cannot be achieved, the pneumatic performance of a penultimate-stage blade is low, and the penultimate-stage blade cannot adapt to a high-rotating-speed biomass power generation steam turbine are solved. The 302.24 mm penultimate-stage moving blade comprises a blade working part, a blade root and a shroud ring; the blade working part, the blade root and the shroud ring are forged into a whole from top to bottom, the molded line of the blade working part is a variable cross-section twisted blade, the adjacent cross sections are twisted relatively, the cross-section areas of the blade working part are gradually reduced from the root to the top, the height L of the blade working part is 302.24 mm, the axial width V of the root of the blade working part is 47.15 mm, the diameter of the root of the blade working part is phi 960.14 mm, and the exhaust area of the blade working part is 1.20 m<2>; and the blade root is a helical tooth fir tree type blade root, and the axial width W of the blade root is 64.12 mm. The 302.24 mm penultimate-stage moving blade is used for the field of turbine moving blades.

Description

technical field [0001] The invention relates to the field of steam turbine moving blades, in particular to a 302.24mm second-last stage moving blade used for high-speed biomass power generation steam turbines. Background technique [0002] Biomass power generation technology is a thermal power generation technology fueled by biomass and its converted substances. Compared with traditional fossil fuels, biomass power generation utilizes local biomass energy resources to generate electricity on site, without the need to transport fuel. In addition, the energy used is renewable energy, which is less polluting, low-carbon and clean, and is conducive to environmental protection. At present, in developed countries, biomass combustion power generation accounts for 70% of renewable energy power generation. my country's biomass power generation has already reached a certain scale, and the most important thing in biomass power generation projects is high-speed long blades. [0003] T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D5/14
CPCF01D5/141F01D5/147
Inventor 王健翁振宇马义良马天吟赵洪羽关淳潘春雨郭魁俊梁天赋王健欣熊继龙刘鑫
Owner HARBIN TURBINE
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