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Method for detecting the correct rotational direction of a centrifugal apparatus, and a centrifugal apparatus assembly

A rotation direction, centrifuge technology, used in centrifuges, machines/engines, measuring devices, etc., can solve problems such as judging the correct rotation direction

Active Publication Date: 2015-04-01
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in many cases it is not possible to judge the correct direction of rotation based on power estimates

Method used

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  • Method for detecting the correct rotational direction of a centrifugal apparatus, and a centrifugal apparatus assembly
  • Method for detecting the correct rotational direction of a centrifugal apparatus, and a centrifugal apparatus assembly
  • Method for detecting the correct rotational direction of a centrifugal apparatus, and a centrifugal apparatus assembly

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Experimental program
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Embodiment Construction

[0015] An embodiment of the method for detecting the correct direction of rotation of a centrifuge comprises an acceleration test and a deceleration test, and the steps of detecting the correct direction of rotation of the centrifuge based on the acceleration test and the deceleration test.

[0016] Herein, a centrifuge is a device having an impeller and adapted to move a fluid, such as a liquid, gas or slurry. For example, a centrifuge may be a centrifugal blower adapted to move gases or a centrifugal pump adapted to move liquids. The direction of rotation of the centrifuge refers to the direction of rotation of the impeller of the centrifuge.

[0017] The acceleration test comprises the steps of: accelerating the centrifuge from a lower speed n in a first direction lower，acc Accelerate to higher acceleration speed n upper，acc , measured for the first direction at a lower acceleration n lower，acc and higher acceleration speed n upper，acc The acceleration time between t 1...

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Abstract

A method for detecting the correct rotational direction of a centrifugal apparatus, the method comprising a step of detecting the correct rotational direction of the centrifugal apparatus based on an acceleration test and / or a deceleration test. The step of detecting the correct rotational direction of the centrifugal apparatus includes comparing the acceleration time (t 1 , acc ) for the first direction with the acceleration time (t 2 , acc ) for the second direction, whereby shorter acceleration time is interpreted as indication of the correct rotational direction; and / or comparing the deceleration time (t 1,dec ) of the first direction with the deceleration time (t 2,dec ) of the second direction, whereby longer deceleration time is interpreted as indication of the correct rotational direction.

Description

technical field [0001] The present invention relates to the detection of the correct direction of rotation of a centrifuge, and more particularly to the sensorless detection of the correct direction of rotation. [0002] In centrifuges such as centrifugal blowers or centrifugal pumps, the direction of fluid flow is independent of the direction of rotation of the centrifuge impeller. However, if the centrifuge is spinning in the wrong direction, the resulting flow rate and pressure can be significantly lower than if it were spinning in the correct direction. This also significantly reduces the energy efficiency of the centrifuge. [0003] The correct direction of rotation of the centrifuge should be checked when installing the centrifuge and after any maintenance operations that may change the direction of rotation of the centrifuge. Background technique [0004] Traditionally, the correct direction of rotation for a centrifuge has been determined by visually inspecting the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P13/04B04B13/00
CPCF04D27/001F04D15/0088
Inventor 尤西·塔米宁泰罗·阿霍宁耶罗·阿霍拉马尔库·涅梅莱
Owner ABB (SCHWEIZ) AG