Method and device for monitoring flow instability degree of vane pump

A technology of instability and monitoring devices, which is applied in pump control, non-variable pumps, machines/engines, etc., and can solve problems such as the rare occurrence of centrifugal pump instability monitoring

Inactive Publication Date: 2014-02-19
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the literature on the instability of the flow inside the pump mainly reflects the reasons for the instability of the flow and the i

Method used

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  • Method and device for monitoring flow instability degree of vane pump
  • Method and device for monitoring flow instability degree of vane pump
  • Method and device for monitoring flow instability degree of vane pump

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] Such as figure 1 As shown, a monitoring device for the degree of flow instability of a vane pump includes a signal acquisition module, a signal conditioning module, a signal processing module, a host computer communication module and a human-computer interaction module.

[0026] Such as figure 2 As shown, the device is installed on the drive motor (2) of the pump (1) to be monitored, connected to the power supply line of the motor, and connected to the motor terminal (3) through the Hall voltage sensor (5) embedded in the PCB circuit board ) are connected, and the power line to be measured passes through the Hall current sensor (6) to realize the measurement of relevant electrical parameters. Input the monitoring time interval and circuit acquisition frequency through the human-computer interaction module (8), and when the water pump ...

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Abstract

The invention discloses a method and a device for monitoring a flow instability degree of a vane pump. The method includes measuring a transient input voltage and a transient input current of a driving motor to compute transient input power of the motor; normalizing the transient input power; computing standard deviation of obtained normalized data; monitoring the flow instability degree of the pump by the aid of standard deviation values which are used as physical quantity values for measuring the current flow instability degree. The device comprises a signal acquisition module, a signal conditioning module, a signal processing module, an upper computer communication module and a human-computer interaction module; the transient voltage and the transient current of the motor can be acquired via the signal acquisition module and the signal conditioning module according to requirements of the human-computer interaction module on transmission and acquisition parameters, the transient power can be computed and normalized by the aid of the signal processing module, the standard deviation of the normalized data can be computed by the aid of the signal processing module, and results can be published via the upper computer communication module and can be displayed by the human-computer interaction module.

Description

technical field [0001] The invention relates to the field of fluid mechanical testing methods, in particular to a method for monitoring the flow instability degree of a vane pump and a device for realizing the method. Background technique [0002] As an important energy conversion and fluid delivery device, the vane pump is widely used in various parts of the national economy and cutting-edge technical fields such as aerospace. Therefore, reducing its energy consumption and improving its operation safety and reliability have huge economic benefits and are of great significance to improving the level of industrial development in our country. The hydraulic performance of the pump mainly refers to the flow head characteristics, efficiency characteristics, etc., which are directly related to the energy-saving operation ability of the pump. In recent years, more and more studies have shown that the unstable characteristics of the internal flow of the pump are closely related to ...

Claims

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Application Information

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IPC IPC(8): F04D15/00
Inventor 骆寅袁寿其李晓俊卢加兴司乔瑞
Owner JIANGSU UNIV
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