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Cantilever fulcrum jumping detecting tool and method

A jump detection and fulcrum technology, applied in the direction of measuring devices, mechanical measuring devices, mechanical devices, etc., can solve the problems that the turbine rotor cannot get the runout value and blade tip clearance, so as to avoid the inability to check and solve the inability to accurately detect and measure get accurate data

Active Publication Date: 2018-01-12
CHINA HANGFA SOUTH IND CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0006] The invention provides a cantilever fulcrum runout detection tool and method to solve the technical problem that the turbine rotor cannot obtain accurate runout values ​​and blade tip clearances during end face detection

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  • Cantilever fulcrum jumping detecting tool and method
  • Cantilever fulcrum jumping detecting tool and method
  • Cantilever fulcrum jumping detecting tool and method

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Embodiment Construction

[0031] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other if there is no conflict. Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments.

[0032] Reference figure 1 The preferred embodiment of the present invention provides a cantilever fulcrum bounce detection tool. The detection method of the low-pressure turbine rotor bounce value and blade tip clearance on the existing engine is to detect without installing the interstage guide 9, but it will There are the following drawbacks: On the one hand, because the low-pressure turbine rotor 8 is connected to the low-pressure compressor through the long shaft, cantilever deflection occurs during end face detection and tip clearance detection when the support point of the low-pressure turbine rotor 8 is not fixed. As a result, the measured low-pressure turbine rotor runout value and...

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Abstract

The invention discloses a cantilever fulcrum jumping detecting tool and method. The detecting tool is clamped onto a turbine case and is used for detecting a jumping value and a tip clearance of a low-voltage turbine rotor at a cantilever end of an air compressor; the low-voltage turbine rotor is fixed by a measuring bridge; by a clearance formed in the measuring bridge and an external detecting device, the jumping value and the tip clearance of the low-voltage turbine rotor are detected; and during assembling of an engine, cantilever deflection at the position of a low-voltage turbine can beavoided by adding auxiliary supporting points on the low-voltage turbine rotor, and therefore, measured data are accurate. In addition, the failure of examination after mounting of a mounted interstage guiding device is avoided, the low-voltage turbine rotor is fixed effectively, and the problem that detection is inaccurate due to the fact that a supporting point of the low-voltage turbine rotor deflects is solved.

Description

Technical field [0001] The invention relates to the field of aeroengine assembly, in particular, to a tool and a method for detecting cantilever fulcrum bounce. Background technique [0002] The low-pressure rotor of a new turboprop engine includes a three-stage axial flow compressor, which is connected to a single-stage turbine through a long shaft. Such as figure 1 As shown, the compressor and the turbine are positioned and installed on the shaft with short cylinders, and the low-pressure compressor rotor 10 and the low-pressure turbine rotor 8 are supported on bearings A, B, and C of the engine in the form of 1-1-1 support. The low-pressure turbine extends from the cantilever of the low-pressure compressor, and is fixed to the low-pressure compressor through a spline rod shaft and a lock nut. The C-number bearing inner ring is installed on the low-pressure turbine rotor 8 and the C-number bearing outer ring is installed in the casing of the interstage guide 9. When the engin...

Claims

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Application Information

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IPC IPC(8): G01B21/00G01B21/16G01B5/00
Inventor 程碧玉张鹏飞徐志伟李敏朱彬
Owner CHINA HANGFA SOUTH IND CO LTD
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