Rotor adaptive continuous frequency shifting tuned mass damper (TMD) for rotary machinery

A technology for tuning mass damping, rotating machinery, applied in the direction of rotation vibration suppression, etc., can solve problems such as difficult to use springs

Inactive Publication Date: 2014-04-23
BEIJING UNIV OF CHEM TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide an adaptive continuous frequency-shift tuning mass damper for rotating machinery rotors, aiming at the characteristics of various frequency components and strong randomness of characteristic main frequency during the working process of rotating machinery rotors, through online real-time continuous adjustment Stiffness, so that the frequency of the TMD subsystem is always consistent with the frequency of the main roto...

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  • Rotor adaptive continuous frequency shifting tuned mass damper (TMD) for rotary machinery
  • Rotor adaptive continuous frequency shifting tuned mass damper (TMD) for rotary machinery
  • Rotor adaptive continuous frequency shifting tuned mass damper (TMD) for rotary machinery

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Embodiment Construction

[0024] Embodiments of the present invention relate to an adaptive continuous frequency shift tuned mass damper for rotating machine rotors, as shown in the attached figure 1 As shown, the rotor system support 13 generally supports the rotating shaft 11 through bearings and bearing housings. The motor 1 is connected to the rotating shaft 11 through the coupling a2 to drive the rotating shaft 11 and the turntable 10 on it to rotate together; the rotor will rotate due to certain factors during the rotation process. Affect vibrations, install this adaptive continuous frequency-shift tuned mass damper at certain positions on the rotating shaft 11, and its structure includes a shaft sleeve 6, a bearing 5, a clamp 4, a stepping motor 3, a screw rod 9, a nut 8, a cantilever Spring rod 12, annular auxiliary mass 7.

[0025] like figure 2 , 3a , 3b is a structural schematic diagram of the self-adaptive continuous frequency shift tuned mass damper of the present invention, the damper ...

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Abstract

Disclosed is a rotor adaptive continuous frequency TMD for rotary machinery. The TMD is in a cage structure and comprises a mechanical structure and a control system. The mechanical structure comprises a connection transmission mechanism and a rigidity continuous adjustable tuning mass mechanism. According to the damper, a screw is driven by a stepping motor to rotate, an annular mass block is pulled by a nut matched with the screw to reciprocate to adjust the frequency of the TMD to achieve real-time tracking continuous adjustment of the inherent frequency of a TMD subsystem, so that the frequency of the subsystem is consistent with the main vibration frequency of the rotor to be adapted to the frequency changes of the rotor in the actual condition. The TMD is adaptable to vibration of various frequency components of rotary machinery and has the advantages of being apparent in damping effect, compact in structure, small in required space, high in reliability, large in rigidity adjusting range and the like.

Description

technical field [0001] The invention relates to a vibration damping device used in rotating machinery, which is mainly used to control the vibration of rotating machinery rotors such as fans, compressors, and steam turbines, and belongs to the technical field of vibration control, in particular to the adaptive continuous frequency shift tuning quality of rotating machinery rotors damper. technical background [0002] Rotating machinery is the most widely used mechanical equipment in the industrial sector, such as aero engines, compressors, steam turbines, gas turbines, etc., and plays an important role in aerospace, energy, petrochemical and other industrial fields. As the core component of rotating machinery, the rotor system vibrates unavoidably. Since the vibration of the rotor system is an important factor determining the performance reliability of rotating machinery products, how to reduce the vibration of the rotor system, improve the life of the rotor, and ensure the...

Claims

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Application Information

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IPC IPC(8): F16F15/10
Inventor 何立东黄秀金王锎高金吉
Owner BEIJING UNIV OF CHEM TECH
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