Dynamic balance correcting method for fan

A correction method and fan technology, applied in the static/dynamic balance test, machine/structural component test, measuring device, etc., can solve the problems of enterprise loss, increase of production and operation cost, consumption of large manpower and material resources, etc., to reduce production The effect of reducing operating costs, prolonging the maintenance and replacement cycle, and saving manpower and material resources

Inactive Publication Date: 2012-01-18
SICHUAN CHUANWEI GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the use of the fan, the dynamic balance of the fan is often damaged. After the dynamic balance of the fan is damaged, it usually needs to be corrected before it can continue to be used. At present, the dynamic balance of the fan is generally corrected by using a dynamic balancing machine. This method There are the following problems in the calibration process: First, when using a dynamic balancing machine to calibrate the dynamic balance of the fan, the impeller of the fan must be removed and then installed on the dynamic balancing machine to perform calibration. After the calibration is completed, the impeller must be installed on the On the fan, however, it takes a long time to disassemble and assemble the fan impeller. During the calibration process of the impeller, the fa

Method used

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  • Dynamic balance correcting method for fan
  • Dynamic balance correcting method for fan
  • Dynamic balance correcting method for fan

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Example Embodiment

[0027] Specific embodiment: The mass of the impeller 2 of a fan is M=10000kg, the radius of the impeller 2 is r=1200mm, the working speed of the impeller 2 is n=1000r / min, and the balance level is G6.3. The dynamic balance of this fan is destroyed. First, determine the unbalance point of the fan, and use the vibration meter to measure the radial vibration displacement of the fan due to the unbalance △ = 0.10mm, and then calculate the allowable unbalance eper = (G×1000) / (n / 10)=(6.3×1000) / (1000 / 10)=63μm, the allowable residual unbalance of the fan m=(eper×M) / (r×2)=(63×10000) / (1200×2 )=262.5g, then calculate the unbalanced amount of the fan m"=(m / 0.13)×△=the unbalanced amount of the fan m”=(262.5 / 0.13)×0.10=201.9g, calculate the unbalanced amount of the fan m”, cut The counterweight 1 with a weight of 201.9g can be balanced by fixing the counterweight 1 at the non-working position of the impeller 2 at an unbalanced point corresponding to an angle of 180°.

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Abstract

The invention discloses a dynamic balance correcting method for a fan, which can be used for shortening the correcting time. The method comprises the following steps of: firstly, determining an imbalance point of the fan and measuring the radial vibration offset delta caused by imbalance of the fan by using a vibration measurer; secondly, computing allowed imbalance degree and allowed residual imbalance amount of the fan, wherein the allowed imbalance degree eper of the fan is equal to (G*1000)/(n/10), and the allowed residual imbalance amount m of the fan is equal to (eper*M)/(r*2); thirdly,computing the imbalance amount of the fan, wherein the imbalance amount m'' of the fan is equal to (m/0.13)*delta; and lastly, balancing. After the method is adopted for correcting the dynamic balance of the fan, the correcting time can be shortened greatly, the fan restores running within a very short period of time, normal performance of production is ensured, a large quantity of manpower and material resources are saved simultaneously, and the production running cost is lowered. The method is suitable to be popularized and applied in the fan repair field.

Description

technical field [0001] The invention relates to the field of fan maintenance, in particular to a method for correcting the dynamic balance of a fan. Background technique [0002] During the use of the fan, the dynamic balance of the fan is often damaged. After the dynamic balance of the fan is damaged, it usually needs to be corrected before it can continue to be used. At present, the dynamic balance of the fan is generally corrected by using a dynamic balancing machine. This method There are the following problems in the calibration process: First, when using a dynamic balancing machine to calibrate the dynamic balance of the fan, the impeller of the fan must be removed and then installed on the dynamic balancing machine to perform calibration. After the calibration is completed, the impeller must be installed on the On the fan, however, it takes a long time to disassemble and assemble the fan impeller. During the calibration process of the impeller, the fan cannot work, so...

Claims

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Application Information

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IPC IPC(8): G01M1/38
Inventor 兰东杨德朝伍连方陈洪春
Owner SICHUAN CHUANWEI GRP CO LTD
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