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Method and device for optimizing vane parameters of guide vane

A technology of guide vanes and optimization methods, applied in design optimization/simulation, special data processing applications, geometric CAD, etc., can solve the problems of increased aerodynamic loss and increased flow loss of turbine blades, and achieve the effect of making up for additional flow loss

Pending Publication Date: 2022-01-28
BEIHANG UNIV
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Problems solved by technology

[0002] Turbine power matching for power plants with free turbines and gas turbines is usually achieved by adjusting the flow area of ​​the free turbine guide vanes, and the change of the flow area will lead to a large increase in the aerodynamic losses of the turbine blades
However, in the process of adjusting the flow area of ​​the free turbine guide vane, the boundary layer on the suction surface or pressure surface inside the guide vane will often cause separation and flow, resulting in a significant increase in flow loss.

Method used

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  • Method and device for optimizing vane parameters of guide vane

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[0036] The present disclosure will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific implementation manners described here are only used to explain relevant content, rather than to limit the present disclosure. It should also be noted that, for ease of description, only parts related to the present disclosure are shown in the drawings.

[0037] It should be noted that, in the case of no conflict, the implementation modes and the features in the implementation modes in the present disclosure can be combined with each other. The present disclosure will be described in detail below with reference to the drawings and embodiments.

[0038] refer to figure 1 Shown is the influence of the free turbine guide vane outlet angle on the aerodynamic efficiency of the gas turbine (Gas Turbine) and free turbine (Power Turbine) stages. After the gas turbine and free turbine power are matched, the internal flow loss of...

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Abstract

The invention discloses a method and device for optimizing the vane parameters of a guide vane. The method comprises the steps that: initial guide vane parameters are obtained, wherein the initial guide vane parameters comprise a group of outlet angles distributed in the radial direction of a guide vane of a free turbine; under the condition that the adjusted power of a gas turbine and the adjusted power of the free turbine are matched, a set of outlet angles distributed in the radial direction of the guide vane of the free turbine are adjusted multiple times, and corresponding free turbine internal flow loss values generated after the set of outlet angles are adjusted each time are obtained; and in the multiple free turbine internal flow loss values, a set of outlet angles, distributed in the radial direction, of the corresponding guide vane of the free turbine are determined when the free turbine internal flow loss value is the lowest. According to the method, the radial distribution of the outlet angles of the guide vane of the free turbine is taken as a design variable, the internal flow loss of the free turbine is taken as an optimization target, the guide vane of the free turbine is subjected to optimization modification design, and the additional flow loss generated by turbine interstage power matching induction is well compensated.

Description

technical field [0001] The disclosure belongs to the technical field of guide vane blades, and in particular relates to a method and device for optimizing parameters of guide vane blades. Background technique [0002] The turbine power matching of power plants with free turbines and gas turbines is usually achieved by adjusting the flow area of ​​the free turbine guide vanes, and the change of the flow area will lead to a large increase in the aerodynamic loss of the turbine blades. However, in the process of adjusting the flow area of ​​the free turbine guide vane, the boundary layer on the suction surface or pressure surface inside the guide vane will often cause separation and flow, resulting in a significant increase in flow loss. Therefore, it is necessary to optimize and modify the design of the free turbine guide vane to reduce the loss of the free turbine guide vane. Contents of the invention [0003] In order to solve the above technical problems, the present dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/28G06F30/17
CPCG06F30/28G06F30/17
Inventor 鹿哈男李秋实张崇欣
Owner BEIHANG UNIV
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