Calculation method of on-line dynamic balance of fan

A calculation method and fan technology, applied in the static/dynamic balance test, machine/structural component test, measuring device, etc., can solve problems that consume a lot of time, affect production, start and stop machines many times, etc.

CN110243541AInactive Publication Date: 2019-09-17XINXING DUCTILE IRON PIPES CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2019-09-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a calculation method of on-line dynamic balance of a fan, and belongs to the technical field of dynamic balance of fans. The calculation method comprises the following steps of measuring an initial vibration vector, performing shutdown, adding a test weight, measuring a test weight vibration vector, dividing the weight of the test weight by the vibration magnitude of the test weight vibration vector to obtain a counterweight ratio of increase or decrease unit vibration quantity, determining the magnitude of a lag angle theta, measuring a target vibration vector of the same fan, obtaining the weight of a to-be-mounted balance weight by the vibration quantity in the target vibration vector, rotating the corresponding lag angle theta based on a phase angle in the target vibration vector to obtain a non-balance position point, performing rotation by 180 degrees at the non-balance position point to obtain a balance weight position point, and mounting the balance weight to the balance weight position point. The calculation method of the on-line dynamic balance of the fan does not require machine start or stop for many times; the time consumption of a dynamic balance experiment is low; and great manpower and material resources are saved.
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Description

technical field

[0001] The invention belongs to the technical field of fan dynamic balance, and more specifically relates to an online dynamic balance calculation method of a fan. Background technique

[0002] In the metallurgical iron and steel sintering industry, no matter flat firing or belt firing, the flue gas extractor is always the heart of sintering, and whether its operation is normal is the key to whether the sintering can be produced normally. The temperature at which the flue gas enters the hood and the dust content of the flue gas are important control points in production. When the intake air temperature is lower than 65 degrees, the humid hot flue gas and dust are easy to form wet mud and stick to the leaf surface. The dust in the hot flue gas above 65 degrees intensifies the erosion of the blades. No matter what temperature the hot flue gas is, it is easy to cause uneven weight of the blade surface, thereby aggravating the imbalance of the fan rotor. It is ...

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Embodiment Construction

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] Please also refer to Figure 1 to Figure 3 , the fan online dynamic balance calculation method provided by the present invention will now be described. The online dynamic balance calculation method of the fan includes the following steps:

[0028] Measure the initial vibration vector of the fan, measure the vibration vector of the test weight after adding the test weight after stopping the machine, and measure the vibration vector of the test weight according to the initial vibration vector and the vibration vector of the test weight;

[0029] Divide the w...