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A sudden unbalanced fault simulation device and method using rotating machinery

A technology of balancing faults and simulation devices, which is applied in the field of aero-engines, can solve the problems of high cost and complicated operation of the blade flight loss load test, and achieve the effect of simple structure, easy operation and reliable simulation

Active Publication Date: 2022-06-07
HARBIN ELECTRIC POWER GENERATION EQUIP NAT ENG RES CENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a device and method for simulating sudden unbalanced faults using rotating machinery. The research and development of the invention solves the problems of high cost and complicated operation of the existing blade flying loss load test

Method used

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  • A sudden unbalanced fault simulation device and method using rotating machinery
  • A sudden unbalanced fault simulation device and method using rotating machinery
  • A sudden unbalanced fault simulation device and method using rotating machinery

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Experimental program
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specific Embodiment approach 1

[0029] Embodiment 1: Combining Figure 1-Figure 3 Illustrating this embodiment, a device for simulating sudden unbalance faults using rotating machinery in this embodiment includes a rotating shaft 5, a wheel test piece 7, an insulating sheet 9, a brush 8 and a conductive ring 10, and the rotating shaft 5 passes through the wheel The disk test piece 7 has the axis and is fixed with the wheel test piece 7. The brush 8 is connected to the rotating shaft 5 through the insulating sheet 9. The brush 8 is symmetrically installed on both sides of the wheel test piece 7, and the brush 8 is electrically connected to the conductive ring 10. The wheel test piece 7 is detachably connected with the balance iron block 6, the two ends of the rotating shaft 5 are connected with the bearing seat 4, the input end of the rotating shaft 5 is connected with the gear box 3 through a coupling 2, and the gear box 3 passes through another A coupling 2 is connected to the motor 1. In this embodiment, i...

specific Embodiment approach 2

[0031] Specific implementation mode 2: Combining Figure 1-Figure 3 Describing the present embodiment, a sudden unbalance fault simulation device applying rotating machinery in this embodiment, the roulette test piece 7 includes a boss 7.1, an I-shaped table 7.3 and a roulette body 7.5, the boss 7.1 and the I-shaped table 7.3 Evenly arranged on the edge of the roulette body 7.5 and fixed with the roulette body 7.5, a spiral coil is wound on the I-shaped table 7.3, two brushes 8 are electrically connected to both ends of the spiral coil, and the spiral coil passes the magnetic field to balance the iron. The block 6 is attached to the table 7.3.

specific Embodiment approach 3

[0032] Specific implementation three: combination Figure 1-Figure 3 This embodiment is described. This embodiment is a simulation device for sudden unbalanced faults applied to rotating machinery. The number of the bosses 7.1 is three. When the spiral coil is energized, the magnetic field generated by the spiral coil is used to balance the iron block 6. Adsorbed on the I-shaped table 7.3, at this time, the sum of the weight of the balance iron block 6 and the I-shaped table 7.3 is the same as the weight of the boss 7.1, so that the weight around the roulette body 7.5 is evenly distributed, start the motor 1, and the motor 1 drives the shaft 5. Drive the roulette test piece 7 to rotate. When the helical coil is powered off, the balance iron block 6 will fly off under the action of centrifugal force, and simulate the process of the blade flying off.

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Abstract

The invention relates to a sudden and unbalanced fault simulation device and method, belonging to the technical field of aero-engines. The research and development of the invention solves the problems of high cost and complicated operation of the existing blade flying loss load test. Including rotating shaft, disc test piece, insulating sheet, electric brush and conductive ring, the rotating shaft passes through the axis of the rotating disc test piece and is fixed with the rotating disc test piece, the brush is connected with the rotating shaft through the insulating sheet, and the brush is symmetrically installed on the rotating disc On both sides of the test piece, the brushes are electrically connected with the conductive ring, the test piece of the wheel disc is installed with the balance iron block, and the two ends of the rotating shaft are connected with bearing seats; the power end of the rotating shaft is provided with a vibration sensor, and the bearing seat is provided with There is a vibration sensor, and the vibration sensor is connected with the industrial control electromechanically through the sensor interface box. The process of blade flying off is simulated, and the vibration signal of the rotating shaft is obtained through the vibration sensor. The structure is simple, the signal acquisition is completed, the cost is low, and it is convenient for the test personnel to operate.

Description

technical field [0001] The invention relates to a device and method for simulating a sudden unbalance fault, belonging to the technical field of aero-engines. Background technique [0002] Blade flyout caused by foreign object impact or fatigue fracture damage is a typical severe load condition that aero-engines may encounter. The transient vibration caused by the fly-off of the blade not only brings great impact load to the engine casing, but also damages the rotor system due to the sudden increase of the unbalanced load, resulting in major accidents. Therefore, it is of great significance to study the transient dynamic characteristics and vibration response of the rotor caused by sudden unbalance. [0003] Section 33.94 of the Airworthiness Regulations formulated by the Federal Aviation Administration requires that the engine structure be able to withstand the blade loss load, and ensure that the debris generated by the blade loss can be contained, and the engine can stil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M1/16G01M13/028G01M13/045G01M13/027
CPCG01M1/16G01M13/028G01M13/045G01M13/027
Inventor 孟凡刚冯永志于宁赵俊明马胜远由岫王辉陈奕嘉孙涛郭祖光戴博林丁继伟陈洪港刘勇卜一凡刘占生
Owner HARBIN ELECTRIC POWER GENERATION EQUIP NAT ENG RES CENT CO LTD