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Testing method and apparatus for supporting state, dynamic balancing state and non-centering state of rotating machine

A technology of rotating machine and testing method, applied in the field of dynamic balance and misalignment test, rotating machine support state, can solve problems such as inability to fully and correctly guide debugging, unable to identify the machine support stiffness state and centering state of the blind area and other problems

Active Publication Date: 2011-11-23
北京唐智科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is to detect the equivalent support state of the machine, the dynamic balance and the misalignment information between each machine during the operation of the rotating machine, so as to overcome the inability of the traditional static detection method to identify the support under the dynamic condition of the machine. Blind spots of stiffness state and alignment state and thus the dilemma of not being able to fully and correctly guide commissioning

Method used

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  • Testing method and apparatus for supporting state, dynamic balancing state and non-centering state of rotating machine
  • Testing method and apparatus for supporting state, dynamic balancing state and non-centering state of rotating machine
  • Testing method and apparatus for supporting state, dynamic balancing state and non-centering state of rotating machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0217] Example 1: Determination of the support low stiffness function of machine 1 .

[0218] For the first-order vibration values ​​at i+1 speeds of N(0)~N(i), divide them by the corresponding vibration values ​​X11(0) and Y11(0) at the first lowest speed respectively to obtain the normalized Normalized transfer function values ​​with (possibly multiple) resonance factors:

[0219] XC11(0~i)=X11(0~i) / X11(0), YC11(0~i)=Y11(0~i) / Y11(0),

[0220] Then divide the corresponding 1st-order vibration magnitude and 2nd-order vibration magnitude by the above-mentioned transfer function value, and obtain the implicit original vibration function that removes the (possibly multiple) resonance factors expressed by the transfer function value:

[0221] Original vibration function XG11(0~i), YG11(0~i),

[0222] Then, use the following formula to calculate the low-stiffness direction angle and low-stiffness vibration value at different speeds Ni=N(0)~N(i):

[0223] Low stiffness vibration ...

Embodiment 2

[0229] Example 2: Misalignment function determination of machine 1

[0230]The support stiffness and misalignment dynamic test diagnostic software contained in the computer 37 of the support stiffness and misalignment dynamic tester can measure the vibration of the machine from the low speed to the highest test speed through the vibration measurement of the continuous slowly changing speed or from the low speed to the highest test speed. Vibration measurements at several constant speeds of N(0)~N(i) (i+1) quasi-full speed tests of N(0)~N(i) and their corresponding vibration data samples N(0~i) and x1(0~i ), y1(0~i); respectively analyze and process the above 2(i+1) vibration data samples, separate the horizontal and vertical first-order vibrations of one of the machines, and obtain the first-order vibration values ​​in the quasi-full speed range: X11(0~i), Y11(0~i).

[0231] Analyze and process the above 2(i+1) vibration data samples respectively, separate the horizontal and ...

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Abstract

The invention discloses a testing method and an apparatus for a supporting state, a dynamic balancing state and a non-centering state of a rotating machine. The testing apparatus comprises a machine 1, a machine 2, and a shaft coupling. The testing apparatus is characterized in that: the machine 1 is connected with the machine 2 through the shaft coupling; a horizontal vibration sensor X1 and a vertical vibration sensor Y1 are installed on a casing and an engine base of the machine 1, wherein the casing and the engine base are at the side close to the shaft coupling; a horizontal vibration sensor X2 and a vertical vibration sensor Y2 are installed on a casing and an engine base of the machine 2, wherein the casing and the engine base are at the side close to the shaft coupling; a speed detection sensor N and a supporting stiffness and non-centering dynamic tester 3 are installed on the machine 1 and the machine 2. According to the traditional static detection method, there is a bind area in which a supporting stiffness state and a centering state can not be identified on the dynamic condition of the machine, so that debugging can not be guided comprehensively and correctly; however, according to the testing method and the apparatus, the above-mentioned problem can be solved.

Description

technical field [0001] The invention relates to the technical field of mechanical equipment reliability and safety, in particular to a test method and device for the supporting state, dynamic balance and misalignment of a rotating machine. Background technique [0002] Modern complex machines are usually composed of several functional single machines connected by mechanical connections; rotating machines are connected by couplings. The ubiquitous problem is: not only because each machine has its own independent support and the anisotropy of the static stiffness of the support, but also the change of the equivalent static stiffness and the resonance after it is combined with the system under the dynamic conditions of operation. , there are also static misalignment of each machine and dynamic misalignment that is different from static misalignment. As a result, the dynamic stiffness, damping and misalignment effects are different from the static effects when the system is ins...

Claims

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Application Information

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IPC IPC(8): G01M13/00G01M1/22G01B21/24
Inventor 唐德尧王智曾承志李合林
Owner 北京唐智科技发展有限公司
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