A Centrifugal Pump Remaining Life Prediction Method

A life prediction and prediction method technology, which is applied in pump control, non-variable pumps, machines/engines, etc., can solve problems such as centrifugal pumps that do not have the prediction function, and achieve the effect of improving reliability and accurate prediction

Active Publication Date: 2018-01-19
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0006] The prediction methods for centrifugal pumps in the above-mentioned prior art mainly involve the prediction of certain performances in the design process of centrifugal pumps, and none of them have the function of predicting the remaining life of centrifugal pumps. In order to avoid sudden accidents caused by sudden failure of centrifugal pumps and For economic loss, it is necessary to predict the remaining life of the centrifugal pump and make an emergency treatment plan in advance to provide a safe and reliable guarantee for the normal operation of the centrifugal pump

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  • A Centrifugal Pump Remaining Life Prediction Method
  • A Centrifugal Pump Remaining Life Prediction Method
  • A Centrifugal Pump Remaining Life Prediction Method

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Embodiment Construction

[0037] The specific implementation manners of the present invention will be further described below.

[0038] A method for predicting the remaining life of a centrifugal pump is implemented, including a method for evaluating the failure life index of a centrifugal pump, a method for predicting the remaining life of a centrifugal pump in ARMA time series, and a method for arranging monitoring points for predicting the remaining life of a centrifugal pump.

[0039] The method for evaluating the failure life index of the centrifugal pump includes the flow-head (H-Q) characteristic curve and the efficiency-flow (η-Q) characteristic curve of the centrifugal pump, and determines the deviation of the two characteristic curves of the centrifugal pump at their working points, and determines the Whether the centrifugal pump is malfunctioning or failing.

[0040] The working point is one of the rated working point of the centrifugal pump or the working point of any flow rate.

[0041] T...

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Abstract

The invention provides a method for predicting the residual life of a centrifugal pump. According to the method for predicting the residual life of the centrifugal pump, the characteristic curve of the centrifugal pump is used as the burn-out life evaluation index of the centrifugal pump, the characteristic curve of the centrifugal pump in the operating process is drawn by arranging corresponding sensors on centrifugal pump residual life prediction monitoring points, and the residual life of the centrifugal pump is predicted based on an ARMA time sequence according to the change tendency of the characteristic curve. Since the characteristic curve of the centrifugal pump is used as the life evaluation index, the method is suitable for centrifugal pumps which operate under different working conditions; and corresponding failure indexes are established according to different use requirements, so that the residual life of the centrifugal pump is effectively predicted, and the utilization efficiency of the centrifugal pump is increased to the maximum extent.

Description

technical field [0001] The invention relates to a life prediction method of a centrifugal pump, in particular to a method for predicting the remaining life of the centrifugal pump by using ARMA time series according to the change trend of the characteristic curve of the centrifugal pump. technical background [0002] Centrifugal pump is a kind of rotating mechanical equipment widely used in industrial drainage, and it plays an important role in many industries such as electric power, mining, chemical industry, and agriculture. When the centrifugal pump transports the fluid medium, due to the erosion of the particles and impurities in the medium, the blades of the centrifugal pump will wear to a certain extent, which will eventually lead to the failure of the centrifugal pump. At the same time, the failure of components such as bearings and connectors will also lead to a decrease in the performance of the centrifugal pump. At present, the maintenance of centrifugal pumps is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D15/00
CPCF04D15/0088F05D2260/81F05D2260/821
Inventor 宋建成姚宇郭文琪郑丽君任俊杰高云广
Owner TAIYUAN UNIV OF TECH
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