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Sudden-adding imbalance fault simulation device and method applying rotary machine

A technology of balance fault and simulation device, which is applied in the field of aero-engines, can solve the problems of high cost and complicated operation of blade flight loss load test, and achieve the effect of reliable simulation of unbalance fault, easy operation, easy installation and disassembly

Active Publication Date: 2020-11-17
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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  • Sudden-adding imbalance fault simulation device and method applying rotary machine
  • Sudden-adding imbalance fault simulation device and method applying rotary machine
  • Sudden-adding imbalance fault simulation device and method applying rotary machine

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specific Embodiment approach 1

[0029] Specific implementation mode one: combine Figure 1-Figure 3 Describe this embodiment, a sudden unbalance fault simulation device for a rotating machine in this embodiment, including a rotating shaft 5, a wheel disc 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 axis of the disc test piece 7 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. The brush 8 is connected to the conductive ring 10 The wheel disc 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 housing 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 is connected through another A shaft coupling 2 is connected to the motor 1. In this em...

specific Embodiment approach 2

[0031] Specific implementation mode two: combination Figure 1-Figure 3 Describe this embodiment, a sudden unbalance fault simulation device applying a rotating machine in this embodiment, the roulette test piece 7 includes a boss 7.1, an I-shaped platform 7.3 and a roulette body 7.5, a boss 7.1 and an I-shaped platform 7.3 Evenly arranged on the edge of the roulette body 7.5 and fixed with the roulette body 7.5, a helical coil is wound on the I-shaped table 7.3, and two brushes 8 are respectively electrically connected to the two ends of the helical coil, and the helical coil balances the iron through the magnetic field. Block 6 is adsorbed on the I-bench 7.3.

specific Embodiment approach 3

[0032] Specific implementation mode three: combination Figure 1-Figure 3 Describe this embodiment, a sudden unbalanced fault simulation device applying a rotating machine in this embodiment, the number of the boss 7.1 is three, when the helical coil is energized, the magnetic field generated by the helical coil will balance the iron block 6 Adsorbed on the I-shaped table 7.3, 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 distribution around the roulette body 7.5 is even, start the motor 1, and the motor 1 drives the rotating shaft 5 drives the wheel disc test piece 7 to rotate, and when the helical coil is powered off, the balance iron block 6 flies off under the action of centrifugal force, simulating the process of the blade flying off, the structure is simple, the cost is low, and it is easy for the test personnel to operate.

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Abstract

The invention relates to a sudden-adding imbalance fault simulation device and method, and belongs to the technical field of aero-engines. According to the invention, the problems of high cost and complex operation of the existing blade loss-of-flight load test are solved. The device comprises a rotating shaft, a wheel disc test piece, insulating strips, electric brushes and a conducting ring; therotating shaft penetrates through the axis of the wheel disc test piece and is fixed to the wheel disc test piece, the electric brushes are connected with the rotating shaft through the insulating strips, and the electric brushes are symmetrically installed on the two sides of the wheel disc test piece and electrically connected with the conducting ring;the wheel disc test piece and the balance iron block are installed; two ends of the rotating shaft are connected with bearing seats; and a vibration sensor is arranged at the power end of the rotating shaft, a vibration sensor is arranged at the bearing pedestal, and the vibration sensor is electrically connected with the industrial personal computer through a sensor interface box. The blade flying-off process is simulated, the vibration signal of the rotating shaft is acquired through the vibration sensor, the structure is simple, signal acquisition is completed, the cost is low, and operation of testers is facilitated.

Description

technical field [0001] The invention relates to a sudden and unbalanced fault simulation device and method, belonging to the technical field of aero-engines. Background technique [0002] The blade flying off caused by foreign object impact or fatigue fracture damage is a typical severe load condition that an aero-engine may encounter. The transient vibration caused by the blade flying off not only brings a huge impact load to the engine casing, but also causes damage to the rotor system due to the sudden increase of 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] Article 33.94 of the airworthiness regulations formulated by the Federal Aviation Administration of the United States requires that the engine structure can withstand the load of the blade loss, and ensure that the debris generated by the blade loss can be ac...

Claims

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Application Information

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Patent Type & Authority Applications(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