Active electromagnetic bearing impeller pump

A technology of active electromagnetic bearings and impeller pumps, applied to pumps, pump devices, pump components, etc., can solve problems such as life safety issues, mechanical bearing seals, and overall system failures, achieving simple functions and overcoming easy wear and tear

Inactive Publication Date: 2015-04-15
SHAZHOU PROFESSIONAL INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Ordinary impeller pumps require many parts, and each part may affect the performance of the pump. The damage or failure of each part may cause the failure of the entire system, requiring shutdown and maintenance
Ordinary impeller pumps are driven by an external motor, which increases the cost of use and additional

Method used

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  • Active electromagnetic bearing impeller pump
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Embodiment Construction

[0009] figure 1 As shown, the active electromagnetic bearing impeller pump consists of an axial displacement sensor (1), a radial displacement sensor (2), a radial magnetic bearing stator (3) (7), an axial magnetic bearing stator (4), and a stator coil (5 ), impeller rotor magnetic steel (6), radial magnetic bearing rotor (8) (9) and other components. figure 2 As shown, a typical active magnetic bearing system is composed of rotor, electromagnet, sensor, control circuit and power amplifier. Bearings consist of a rotor and a stator. The eccentricity of the rotor is detected by the sensor, and compared with the reference signal (the ideal position of the rotor) through feedback, the regulator adjusts according to the deviation signal, and sends the adjustment signal to the power amplifier to change the current of the electromagnet (stator) , so that the electromagnet current on one side of the air gap increases, and the electromagnet current on the other side decreases, there...

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PUM

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Abstract

The invention discloses an active electromagnetic bearing impeller pump. The active electromagnetic bearing impeller pump is mainly composed of a radial direction electromagnetic bearing rotor, a stator, a thrust bearing, a sensor and a bracket thereof, an impeller and a pump shell. The bearing seat and the impeller are made as an integrated body, the impeller (rotor) of the pump is embedded with the soft magnetic material (magnetic steel and the like) with good permeability, the pump shell (stator) is provided with a coil, which is connected with the electric current for generating the rotating magnetic field, driving the impeller for rotating and realizing the action of the pump. Another magnetic bearing (in radial direction and axial direction) is used for rotating and locating the main shaft and stopping the displacement in radial direction and axial direction. The rotor is soaked in the medium for rotating; the surface contacting the fluid is covered by the corrosion-resistant material, so that the pump has no sealing element of any type inside. The active electromagnetic bearing impeller pump is simple in function, the defect of the common impeller pump, which is easily worn and required to be sealed can be greatly overcome and the active electromagnetic bearing impeller pump has good application prospect.

Description

technical field [0001] The patent of the present invention relates to an active electromagnetic bearing impeller pump, which mainly consists of a radial electromagnetic bearing rotor and stator, a thrust bearing, a sensor and its bracket, an impeller, and a pump casing. Background technique [0002] Ordinary impeller pumps require many parts, and each part may have an impact on the performance of the pump. The damage or failure of each part may cause the failure of the entire system, requiring shutdown for maintenance. Ordinary impeller pumps are driven by an external motor, which increases the cost of use and additional connection accessories. In addition, due to the use of ordinary rolling bearings to support the transmission shaft, the wear of the mechanical bearing itself and the sealing of the bearings have life and safety issues. The entire system needs maintenance and replacement at regular intervals. Contents of the invention [0003] The purpose of the present in...

Claims

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Application Information

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IPC IPC(8): F04D13/06F04D29/048
CPCF04D13/06F04D29/048
Inventor 秦艳吴良芹
Owner SHAZHOU PROFESSIONAL INST OF TECH
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