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Turbine guide vane cooling air flow adjustment device

A technology for turbine guide vanes and cooling airflow, which is applied in the field of aero-engines, can solve the problems of unadjustable cooling air and does not have a large cooling air adjustment capability, and achieves simple structure, convenient assembly and disassembly, and good interchangeability and economy. Effect

Active Publication Date: 2022-02-01
AECC SICHUAN GAS TURBINE RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Ordinary high-pressure turbine guide vanes generally adopt a structure in which the cooling air cannot be adjusted. The area of ​​the cooling air intake window is fixed. , does not have a large cooling air conditioning capacity

Method used

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  • Turbine guide vane cooling air flow adjustment device
  • Turbine guide vane cooling air flow adjustment device
  • Turbine guide vane cooling air flow adjustment device

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Embodiment Construction

[0020] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0021] like Figure 1 to Figure 3 As shown, the embodiment of the present invention provides a turbine guide vane cooling air flow adjustment device, which includes a body, an intake casing 5 , a high-pressure turbine guide vane 7 and a piston 2 . The body has a cylindrical structure with an open lower end and a closed upper end. The upper end of the cylinder wall of the body is provided with a first air inlet hole, and the lower end of the cylinder wall of the body is provided with a second air inlet hole 13, and the first air inlet hole and the second air inlet hole 13 are all communicated with the inner cavity of the body; the intake casing 5 is open at both ends, and the upper opening of t...

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PUM

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Abstract

The invention provides a turbine guide vane cooling air flow adjustment device, comprising: a body, which is a cylindrical structure with an open lower end and a closed upper end, a first air inlet is provided at the upper end of the cylindrical wall of the main body, and a second air inlet is arranged at the lower end of the cylindrical wall of the main body. Two air intake holes, and the first air intake hole and the second air intake hole are both connected with the inner cavity of the body; the air intake casing is open at both ends, and the upper end opening of the air intake casing is connected with the lower end opening of the body; The guide vanes of the high-pressure turbine are arranged at the outlet of the lower end of the air intake casing; the piston is arranged in the inner cavity of the body and can move up and down relative to the body, and the lower end of the piston is provided with an overflow hole that can communicate with the second air inlet group, and the flow area of ​​the flow hole group is smaller than the flow area of ​​the second air inlet hole. By moving the piston up and down to adjust the air supply window area of ​​the cooling air, the throttling of the cooling air is realized, thereby controlling the amount of cooling air entering the guide blades of the high-pressure turbine.

Description

technical field [0001] The invention relates to the field of aero-engines, in particular to a cooling air flow regulating device for turbine guide blades. Background technique [0002] The working environment of aero-engine turbine guide vanes is harsh. As the temperature in front of the aero-engine turbine becomes higher and higher, the cooling requirements for turbine guide vanes are getting higher and higher. With the advancement of aero-engine technology, the requirements for cooling air volume are also increasing. Strict, due to the balance of fuel consumption and efficiency of aero-engines, the requirements for variable-cycle cooling of the engine are also getting higher and higher, requiring the engine to have different cooling air volumes under different operating conditions. [0003] Ordinary high-pressure turbine guide vanes generally adopt a structure in which the cooling air cannot be adjusted. The area of ​​the cooling air inlet window is fixed. , does not have...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D9/02F01D25/12F01D17/00
CPCF01D9/02F01D25/12F01D17/00
Inventor 张乘齐杜鹏王永明窝丁日海赵云唐国庆陈磊黄顺洲
Owner AECC SICHUAN GAS TURBINE RES INST
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