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Method and device for determining outlet metal angle of guide vane blade

A technology of guide vane and determination method, which is applied in stators, instruments, electrical and digital data processing and other directions, can solve problems such as aerodynamic loss, and achieve the effect of avoiding flow loss

Active Publication Date: 2022-02-18
BEIHANG UNIV
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Problems solved by technology

In the prior art, the method of adjusting the power between turbine stages is realized by adjusting the installation angle of free turbine guide vanes. However, in the process of adjusting the installation angle of free turbine guide vanes, relatively serious aerodynamic losses will occur inside the free turbine. That is to say, it is equivalent to sacrificing a certain amount of turbine aerodynamic efficiency in exchange for a better power matching effect between turbine stages.

Method used

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  • Method and device for determining outlet metal angle of guide vane blade
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  • Method and device for determining outlet metal angle of guide vane blade

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Embodiment Construction

[0034] 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.

[0035] 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.

[0036] In order to analyze the influence of free turbine guide vane flow capacity on the power matching between turbine stages, such as figure 1 As shown, the total power of the full-stage turbine and the change trend of the output power of the gas turbine and the free turbine a...

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Abstract

The invention provides a method and device for determining an outlet metal angle of a guide vane blade. The method and device are used for power equipment with a gas turbine and a free turbine. The free turbine is provided with the guide vane blade. The method comprises the steps that the target power coefficient of the free turbine is determined based on a power matching relation of the gas turbine and the free turbine; and the outlet metal angle of the guide vane blade is determined based on the target power coefficient of the free turbine. Compared with a traditional scheme of adjusting a mounting angle, the internal flow loss of the free turbine can be prevented from being greatly improved, and therefore, efficient matching of the output power of the gas turbine and the output power of the free turbine can be achieved under the condition that the aerodynamic efficiency of the whole-stage turbine is kept.

Description

technical field [0001] The disclosure belongs to the technical field of internal flow fluid mechanics, and in particular relates to a method for determining an outlet metal angle of a guide vane blade, a free turbine and an engine. Background technique [0002] For a turboprop engine, the turbine component is an important source of compressor boost power and propeller thrust, and the aerodynamic design of the turbine component greatly affects the aerodynamic performance of the entire turboprop engine. [0003] Due to the special structure of the turboprop engine, the output power of the gas turbine and the free turbine should meet the pressure requirements of the compressor and the thrust requirements of the propeller respectively. In the prior art, the method of adjusting the power between turbine stages is realized by adjusting the installation angle of free turbine guide vanes. However, in the process of adjusting the installation angle of free turbine guide vanes, relati...

Claims

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Application Information

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IPC IPC(8): F01D9/02G06F30/17G06F30/28G06F113/08G06F119/14
CPCF01D9/02G06F30/17G06F30/28G06F2113/08G06F2119/14
Inventor 鹿哈男李秋实张崇欣
Owner BEIHANG UNIV
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