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A third-stage moving blade of a turbine for a heavy-duty medium-low calorific value gas turbine

A low calorific value, moving blade technology, used in machines/engines, blade support elements, mechanical equipment, etc., can solve the problems of low blade aerodynamic efficiency, affecting the safe operation of turbines, and short service life, and improve aerodynamic efficiency. , safe and efficient operation, the effect of prolonging the service life

Active Publication Date: 2016-05-11
HARBIN TURBINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a third-stage moving blade of a turbine for a heavy-duty medium-low calorific value gas turbine, so as to solve the problem of serious strength reduction caused by the height increase of the third-stage moving blade of a heavy-duty medium-low calorific value gas turbine. Low power efficiency, short service life, and problems affecting the safe operation of the turbine

Method used

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  • A third-stage moving blade of a turbine for a heavy-duty medium-low calorific value gas turbine
  • A third-stage moving blade of a turbine for a heavy-duty medium-low calorific value gas turbine
  • A third-stage moving blade of a turbine for a heavy-duty medium-low calorific value gas turbine

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specific Embodiment approach 1

[0011] Specific implementation mode one: combine Figure 1 to Figure 6 Explain that the moving blade in this embodiment includes the blade working part 1, the shroud 2 and the petiole 3, the blade working part 1, the shroud 2 and the petiole 3 are cast as one, and the shape line of the blade working part 1 is a variable cross-section twisted blade The shape of the section along the height of the blade is different, the cross-sectional area gradually increases from the root to the top, and there is a relative twist between two adjacent sections; the geometric data of the section of the blade working part 1 from near the root to the top: section A-A, section B-B, The section height of section C-C, section D-D, section E-E, section F-F, section G-G, section H-H, section I-I, section J-J and section K-K is 0-550.77mm, the axial width Q is 77.610-145.468mm, and the chord length b is 115.771mm ~148.437mm, the inlet angle α is 54.911°~86.683°, the installation angle βy is 41.778°~78....

specific Embodiment approach 2

[0015] Specific implementation mode two: combination Figure 2 to Figure 6 Note that the section height of the section B-B of the blade working part 1 in this embodiment is 47.75 mm, the axial width Q of the blade working part 1 corresponding to this position is 139.094 mm, the chord length b is 144.625 mm, and the air intake angle α is 54.911 mm °, the installation angle βy is 74.628°, the maximum thickness T of the molding line is 23.051mm, and the thickness δ of the air outlet side is 4.312mm.

[0016] The undisclosed technical features in this embodiment are the same as those in the first embodiment.

specific Embodiment approach 3

[0017] Specific implementation mode three: combination Figure 2 to Figure 6 Note that the section height of the section C-C of the blade working part 1 in this embodiment is 105.05 mm, the axial width Q of the blade working part 1 corresponding to this position is 131.605 mm, the chord length b is 140.842 mm, and the inlet angle α is 56.755 mm. °, the installation angle βy is 69.752°, the maximum thickness T of the molding line is 20.560mm, and the thickness δ of the air outlet side is 3.119mm.

[0018] The undisclosed technical features in this embodiment are the same as those in the first or second specific embodiment.

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Abstract

The invention relates to a third stage turbine moving vane for a heavy type low and middle heat value fuel machine. The third stage turbine moving vane for the heavy type low and middle heat value fuel machine solves the problems that intensity of an existing third stage turbine moving vane of the heavy type low and middle heat value fuel machine is seriously reduced, and the existing third stage turbine moving vane of the heavy type low and middle heat value fuel machine is low in aerodynamic efficiency and short in use life, and influences safe running of a turbine, which are caused by increases of the height of the existing third stage turbine moving vane of the heavy type low and middle heat value fuel machine. The third stage turbine moving vane for the heavy type low and middle heat value fuel machine is characterized in that each two adjacent sections can be relatively rotated, and geometric data of the section A-A, the section B-B, the section C-C, the section D-D, the section E-E, the section F-F, the section G-G, the section H-H, the section I-I, the section J-J and the section K-K from the root to the top of the work portion of the third stage turbine guide vane includes section heights which range from 0 to 550.77mm, axial widths Q which range from 77.610mm to 145.468mm, chord lengths b which range from 115.771mm to 148.437mm, air inlet angles alpha which range from 54.911 degrees to 86.683 degrees, installation angles betay which range from 41.778 degrees to 78.822 degrees, maximum thicknesses of molded lines, which range from 5.268mm to 25.468mm, air outlet edge thicknesses delta which range from 2.623mm to 5.978mm, and the total height L of the work portion of the third stage turbine moving vane, which is 550.77mm. The third stage turbine moving vane for the heavy type low and middle heat value fuel machine is used on a turbine of the heavy type low and middle heat value fuel machine.

Description

technical field [0001] The invention relates to a turbine moving blade for a heavy-duty medium-low calorific value combustion engine. Background technique [0002] In recent years, high-efficiency gas turbines have gradually increased the outlet temperature of the combustion chamber and the gradual increase in turbine power has gradually increased the height of the turbine blades, which has caused the influence of the solid shape of the blades enveloped by multiple cross-sectional airfoil lines, making heavy-duty low-calorific value gas turbines The aerodynamic efficiency of the third-stage moving blades of the turbine is low, and the service life is short, which affects the safe operation of the turbine. Contents of the invention [0003] The object of the present invention is to provide a third-stage moving blade of a turbine for a heavy-duty, medium-low calorific value gas turbine, so as to solve the problem of serious strength reduction and loss of blade air caused by ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D5/14
Inventor 冯永志蒙俊斌刘强姜东坡赵俊明丁继伟席会杰周驰
Owner HARBIN TURBINE