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Shrouded turbine blade damping test device

A turbine blade and test device technology, which is applied to measurement devices, elasticity tests, engine tests, etc., can solve problems such as inability to obtain damping parameters, and achieve the effects of clear design structure, low processing cost, and convenient use.

Inactive Publication Date: 2021-03-02
AECC SICHUAN GAS TURBINE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The low-pressure turbine blade of the engine is a key part of the engine. During the development process, the damping characteristics of the turbine blade must be mastered. Accurate damping parameters cannot be obtained through calculation and simulation.

Method used

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  • Shrouded turbine blade damping test device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The tenon clamping assembly and the blade crown loading assembly, the tenon clamping assembly includes the chuck fixing seat, the chuck, the chuck clamping bolt, the fixing bolt and the fixing nut, the chuck clamps the tenon of the turbine blade, and the chuck is placed on the chuck fixing seat In the middle, the collet tightening bolt is tightened to fix the collet, and the collet fixing seat is fastened on the base through the fixing bolt and the fixing nut; the shroud loading assembly is used for loading the turbine blade shroud, and the shroud loading assembly includes the front support , loading block, sensor support, bearing block, rear support, fixing bolts, fixing nuts, loading jacking bolts, the blade shroud loading assembly is a symmetrical structure about the blade shroud, on the same straight line and perpendicular to the blade body.

[0019] In the above test device, the middle section of the loading block has a square structure and passes through the square...

Embodiment 2

[0024] The present invention designs a turbine blade damping test device with a shroud figure 1 , to realize the installation scheme of measuring the damping parameters of shrouded turbine blades under the extrusion of different clamping forces.

[0025] The crowned turbine blade damping test device of the present invention includes a base (1), a chuck holder (2), a chuck (3), a chuck jacking bolt (4), a front support (5), a loading block (6), Sensor support (7), bearing block (8), rear support (9), fixing bolts (10), fixing nuts (11), loading jacking bolts (12); the chuck fixing seat (2), front The support (5), the sensor support (7), the rear support (9) and the base (1) are connected by fixing bolts (10) and fixing nuts (11), and the chuck (3) is fixed on the on the chuck holder (2). The loading block (6) is connected together with the front support (5). Loading jacking bolts (12) are connected together with rear support (9).

[0026] The front support (5), the loading ...

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Abstract

The invention provides a shrouded turbine blade damping test device. The device comprises a base (1), a chuck fixing seat (2), a chuck (3), a chuck jacking bolt (4), a front support (5), a loading block (6), a sensor support (7), a force bearing block (8), a rear support (9), a fixing bolt (10), a fixing nut (11) and a loading puller bolt (12); the base (1) is of a plate-shaped structure, the front support (5) and the sensor support (7) are both of a supporting structure with a through hole in the middle, the rear support (9) is of a supporting structure with a threaded hole in the middle, thechuck fixing seat (2) is of a supporting structure with a square hole in the middle, the chuck fixing seat (2) is arranged at the first end of the base (1), the rear support (9), the sensor support (7) and the front support (5) are sequentially arranged at the second end of the base (1) from outside to inside, the front support (5), a sensor support (7) and the rear support (9) are sequentially arranged at the third end of the base (1) from outside to inside, and the chuck (3) matches the tenon of a shrouded turbine blade in shape.

Description

technical field [0001] The invention belongs to the technical field of aero-engine vibration tests, and relates to a shrouded turbine blade damping test device. Background technique [0002] The low-pressure turbine blade of the engine is a key part of the engine. During the development process, the damping characteristics of the turbine blade must be mastered, and accurate damping parameters cannot be obtained through calculation and simulation. At present, the most widely used damping measurement test method is to measure the free state of the blade crown, which is quite different from the actual installation state of the engine, and the pressure of the blade crown is not the bigger the better, nor the smaller the better, but there is an optimal In order to obtain the optimal damping state parameters, it is necessary to realize the measurement under the different states of the shroud extrusion force, that is, the extrusion force can be adjusted and measured. The damping p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M5/00G01M15/02
CPCG01M5/0016G01M15/02
Inventor 符顺国罗现强代江波王琦冯海波
Owner AECC SICHUAN GAS TURBINE RES INST
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