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Centrifugal pump and permanent magnet motor safe operation control device and regulation and control method thereof

A technology for safe operation and permanent magnet motors, applied in pump devices, pump control, electromechanical devices, etc.

Pending Publication Date: 2018-09-04
ZHEJIANG YONGFA ELECTROMECHANICS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The same problem is evident in the design and use of pumps

Method used

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  • Centrifugal pump and permanent magnet motor safe operation control device and regulation and control method thereof
  • Centrifugal pump and permanent magnet motor safe operation control device and regulation and control method thereof

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Embodiment Construction

[0048] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0049] Such as figure 1 As shown, the safe operation control device for the centrifugal pump and the permanent magnet motor includes a centrifugal pump, a permanent magnet synchronous motor and a servo driver 23. The centrifugal pump includes a pump casing 1, and a pump chamber is provided in the pump casing 1, and an impeller 2 is arranged in the pump chamber. The center of the impeller 2 is fixed through the pump body shaft 3, the transmission end of the pump body shaft 3 is sleeved with the pump bearing 4 and the pump end cover 5, and then protrudes out of the pump casing 1, and the pump casing 1 is provided with a water inlet 1a and a water outlet 1b, and the water inlet 1a communicates with the impeller channel of the...

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PUM

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Abstract

The invention provides a centrifugal pump and permanent magnet motor safe operation control device and a regulation and control method thereof. According to the centrifugal pump and permanent magnet motor safe operation control device, an impeller is arranged in a pump shell of a centrifugal pump, the transmission end of a pump body shaft of the impeller is sleeved with a pump bearing and a pump end cover, a water inlet and a water outlet are formed in the pump shell, and a noise sensor is arranged at the water outlet; a pump body temperature sensor and a pump body vibration sensor are arranged at the pump end cover, and the noise sensor, the pump body temperature sensor and the pump body vibration sensor are connected with a servo driver through electric wires; a stator and a rotor are arranged in a motor shell of a permanent magnet synchronous motor, the driving end of a motor shaft of the rotor is sleeved with a motor bearing and a motor end cover, a first temperature sensor is arranged on the outer wall of the motor shell, a second temperature sensor and a motor vibration sensor are arranged at the motor end cover, and the first temperature sensor, the second temperature sensorand the motor vibration sensor are connected with the servo driver through electric wires; and the motor shaft is fixedly connected with the pump body shaft through a coupler, and the servo driver isconnected with the permanent magnet synchronous motor through a frequency converter in an electrical control mode.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a cooperation between a pump and a motor, in particular to a control device for safe operation of a centrifugal pump and a permanent magnet motor and a control method thereof. Background technique [0002] Motors and pumps complement each other, and jointly build a considerable foundation and market for traditional industries. As the working environment of the pump becomes more and more diverse, the uncontrollable factors of the change of working conditions gradually increase. Keeping the pump and the motor in a high-efficiency working state is not only the need for energy saving and emission reduction, but also the inevitable trend of the market to save costs. When the pump and the motor are used together, some common problems often occur, such as excessive vibration, serious temperature rise, and loud noise, which seriously affect the working efficiency and greatly damage the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D9/02F04D13/06F04D15/00F04D15/02H02K5/16H02K5/18H02K7/00H02K7/14H02K9/06H02K11/20H02K11/25
CPCH02K5/161H02K5/18H02K7/003H02K7/14H02K9/06H02K11/20H02K11/25F04D9/02F04D13/06F04D15/0066F04D15/0281
Inventor 高永升高树彪牟介刚章子成宋泽新
Owner ZHEJIANG YONGFA ELECTROMECHANICS LTD
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