Method for measuring unbalance amount of rigid rotor by using static balance

An unbalanced and rigid rotor technology, applied in the field of measurement, can solve the problems of long time, inability to quantitatively analyze and evaluate the quality of rotor balance, low efficiency, etc., to improve efficiency and effectiveness, reliable static balance measurement method, shorten the time-consuming effect

Inactive Publication Date: 2011-09-07
淄博真空设备厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, in the prior art, using the static balance method to detect the unbalance of the rigid rotor can meet the requirement that the remaining unbalance of the rotor is less than the allowable unbalance...

Method used

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  • Method for measuring unbalance amount of rigid rotor by using static balance
  • Method for measuring unbalance amount of rigid rotor by using static balance
  • Method for measuring unbalance amount of rigid rotor by using static balance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Static balance determination of rotor-unbalance:

[0058] It is known that the weight of the rotor is 1373kg, the outer diameter of the rotor is 1000mm, the rotating speed of the rotor is 336r / min during operation, and the balance quality requirement of the rotor is G6.3.

[0059] According to the standard GB / T 9239.1-2006, the allowable unbalance of the rotor can be calculated as 491.67×500g·mm.

[0060] In order to calculate the unbalance of the rotor, it is necessary to measure the moment of inertia J of the rotor according to step (3). 0 . According to the requirement of step (3) of the present invention, make m 0 is 400g, r is 500mm, measured t +m0 is 11.9s, t -m0 is 18.2s; t +m0 and t -m0 All are average values ​​of multiple measurements. Then according to the step (3) of the present invention, the moment of inertia J of the rotor can be obtained 0 5012.56g·s 2 ×500mm.

[0061] According to the step (2) of the present invention, the corresponding relatio...

Embodiment 2

[0066] Static balance determination of rotor two unbalance:

[0067] It is known that the weight of the rotor is 576kg, the outer diameter of the rotor is 780mm, the rotating speed of the rotor is 450r / min during operation, and the balance quality requirement of the rotor is G6.3.

[0068] According to the standard GB / T 9239.1-2006, the allowable unbalance of the rotor can be calculated as 197.45×390g·mm.

[0069] In order to calculate the unbalance of the rotor, it is necessary to measure the moment of inertia J of the rotor according to step (3). 0 . According to the requirement of step (3) of the present invention, make m 0 is 100g, r is 390mm, measured t +m0 14.3s, t -m0 is 22.6s, t +m0 and t -m0 All are average values ​​of multiple measurements. Then according to the step (3) of the present invention, the moment of inertia J of the rotor can be obtained 0 1727.65g·s 2 ×390mm.

[0070] According to the step (2) of the present invention, the corresponding relation...

Embodiment 3

[0075] Static balance determination of rotor three imbalances:

[0076] It is known that the weight of the rotor is 3435kg, the outer diameter of the rotor is 1420mm, the rotating speed of the rotor is 340r / min during operation, and the balance quality requirement of the rotor is G6.3.

[0077] According to the standard GB / T 9239.1-2006, the allowable unbalance of the rotor can be calculated as 856.054×710g·mm.

[0078] In order to calculate the unbalance of the rotor, it is necessary to measure the moment of inertia J of the rotor according to step (3). 0 . According to the requirement of step (3) of the present invention, make m 0 is 500g, r is 710mm, measured t +m0 16.7s, t -m0 272s, t +m0 and t -m0 All are average values ​​of multiple measurements. Then according to the step (3) of the present invention, the moment of inertia J of the rotor can be obtained 0 11338.542g s 2 ×710mm.

[0079] According to the step (2) of the present invention, the corresponding rela...

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Abstract

The invention discloses a method for measuring unbalance amount of a rigid rotor by using static balance. The method comprises the steps of detecting an unbalanced direction of the rigid rotor on a statically-balanced rack, detecting a swinging period of the rigid rotor on the statically-balanced rack and determining the unbalance amount of the rigid rotor. A simple and reliable static balance measurement method for measuring the unbalance amount of the rigid rotor and evaluating the balance quality is provided. By the method, the unbalance amount and the unbalance direction of the rigid rotor can be determined effectively; the problem that the measurement on the unbalance amount of the rigid rotor by using the static balance measurement method cannot be evaluated quantitatively is solved, so the one-time correcting rate during the balance correction of the rigid rotor is more than 90 percent; the requirement on the balance correction of the rotor by using the static balance measurement method is to ensure the rest unbalance amount of the rotor is less than the available unbalance amount of the rotor rather than ensure the arbitrary balance of the whole balance system; and therefore, the time for the balance correction of the rotor is greatly shortened from two aspects and the efficiency and effectiveness of the balance correction of the rotor are improved.

Description

technical field [0001] The invention relates to a measuring method, more specifically, relates to a method for measuring the unbalance of a rigid rotor by using static balance. Background technique [0002] In the national standard GB / T 9239.1-2006 "Mechanical Vibration Constant (Rigid) Rotor Balance Quality Requirements Part 1: Specification and Balance Tolerance Inspection", on the basis of summarizing domestic and foreign experience, according to the constant (rigid) The mechanical type and maximum operating speed of the rotor, and the balance quality requirements of the rotor are suggested and classified. The measurement method of unbalance is divided into dynamic balance and static balance. The standard provides the selection requirements for the measurement method. For rotors with relatively low balance quality requirements, only one-sided correction is required. The unbalance of the rotor during one-sided correction can be measured on a rotary balancing machine, or i...

Claims

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Application Information

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IPC IPC(8): G01M1/16
Inventor 雷春栋黄毅
Owner 淄博真空设备厂有限公司
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