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A fault detection and early warning device for canned pump

A fault detection and shielding pump technology, which is applied to the components of the pumping device for elastic fluid, pumps, pump control and other directions to achieve the effect of solving the problem of eccentric wear monitoring and early warning in all working conditions

Inactive Publication Date: 2019-10-22
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By sampling and analyzing the output signal of the deflection detection coil with position positioning and the output signal of the acceleration vibration sensor, the problem of eccentric wear monitoring and early warning of graphite bearings in all working conditions is solved.

Method used

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  • A fault detection and early warning device for canned pump
  • A fault detection and early warning device for canned pump
  • A fault detection and early warning device for canned pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The present invention will be further described below in conjunction with the drawings.

[0018] Such as figure 1 As shown, a fault detection and early warning device for a shielded pump includes a data acquisition unit, a display operation unit, a communication interface unit, a power supply unit, an MCU main control unit, and a fault detection sensor group. The fault detection sensor group includes a deflection The detection coil and the acceleration vibration sensor, the stator winding temperature measurement sensor, namely the PT-1000 thermal resistance and the stator space pressure measurement sensor, which are placed in the direction perpendicular to the axis of the deflection detection coil, the deflection detection coil and the PT-1000 thermal resistance respectively pass the protection The wire is connected to the data acquisition unit, and is used to collect the alternating voltage signal output by the deflection detection coil and the temperature measurement sign...

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Abstract

The invention relates to fault detection early-warning devices, in particular to a fault detection early-warning device for a shield pump. The fault detection early-warning device for the shield pumpcomprises a data acquisition unit, a display operation unit, a communication interface unit, a power supply unit, a main control unit (MCU) and a fault detection sensor set. According to the fault detection early-warning device for the shield pump, an offset detection coil is used as a reference position sensor, a PT-1000 thermal resistor and a stator spatial pressure measurement sensor are mounted on a stator winding, and an acceleration vibrating sensor is mounted on a graphite bearing seat. Through sampling analysis on an output signal of the offset detection coil with a positioning function and an output signal of the acceleration vibrating sensor, monitoring and early-warning of eccentric-wear of a graphite bearing in overall working conditions are achieved.

Description

Technical field [0001] The invention relates to a fault detection and early warning device, and more specifically, to a fault detection and early warning device for a canned motor pump. Background technique [0002] Canned motor pump is the core component of corrosive and harmful medium pressure transportation in chemical, petroleum, pharmaceutical, nuclear industry and even high-speed train. Its reliability and safety are important indicators of equipment operation and affect the overall safety of the production system. Due to the special structure of the canned motor pump-the pump's rotating power unit and the pump's delivery medium need to be highly isolated. The support bearing in the canned motor pump is a graphite bearing, which is an abrasive consumable part in the operation of the canned motor pump and a weak point for the safe operation of the canned motor pump. In order to ensure safety in the operation and use of the canned motor pump, avoid the eccentric rotation of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D15/00F04D29/046
Inventor 王孝良萨仁朝格图王英洁张雪源
Owner DALIAN UNIV OF TECH
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