A bearing wear detection device and detection method in shielded pump

A technology of a bearing wear detection device, which is applied in the field of bearing wear detection devices in shielded pumps, bearing wear detection and detection devices in shielded pumps, can solve the problems of complex structure and operation, poor detection reliability, etc., and achieve simple structure and improved reliability performance, sensitivity enhancement effect

Active Publication Date: 2022-02-22
HEFEI UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of complex structure and operation of the existing bearing wear detection device and poor detection reliability, the present invention provides a bearing wear detection device and its detection method in shielded pumps

Method used

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  • A bearing wear detection device and detection method in shielded pump
  • A bearing wear detection device and detection method in shielded pump
  • A bearing wear detection device and detection method in shielded pump

Examples

Experimental program
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Effect test

Embodiment 1

[0042] see figure 1 as well as figure 2 , this embodiment provides a bearing wear detection device in a canned pump, the detection device is used to detect the amount of wear of the bearing. In this embodiment, the bearing is the rotating shaft bearing in the canned pump, while in other embodiments, the bearing can be other bearings. Wherein, the detection device includes a connecting piece 1 , a detection probe 2 , a transmission tube 3 and a detection mechanism 4 .

[0043] The connecting piece 1 is sleeved on the rotor tail of the bearing, and the end away from the bearing is provided with a groove 8 arranged coaxially with the rotor. In this embodiment, the connecting piece 1 is an end nut. One end of the end nut is a closed end, and the other end is provided with a groove 8 . The groove 8 is divided into two sections, which are arranged in the middle and the end of the end nut respectively. When the bearing wears radially, the rotor will move forward or backward and...

Embodiment 2

[0055] This embodiment provides a bearing wear detection device in a canned pump, which is similar to the detection device in Embodiment 1, except that the structure of the displacement sensing unit is different. In this embodiment, the displacement sensing unit has coils and magnets in addition to the diaphragm 6 . The coil is connected to the diaphragm 6 and the magnet is installed in the detection case 5 . Wherein, the diaphragm 6, the coil and the magnet form a moving coil structure. Vibration of the diaphragm 6 changes the magnetic flux generated by the magnet in the coil, and causes the coil to generate a current signal that is positively correlated with the radial wear amount, and the current signal is used as detection signal 1 or detection signal 2.

[0056] The displacement sensing unit in this embodiment can form a moving coil structure through the diaphragm 6, the coil and the magnet. During the vibration of the diaphragm 6, the magnetic flux of the magnet in the ...

Embodiment 3

[0058] This embodiment provides a bearing wear detection device in a canned pump, which is similar to the detection device in Embodiment 1, except that the displacement sensing unit is a pneumatic sensor. The pneumatic sensor is used to sense the vibration of the resonant cavity, and generates a detection signal 1 according to the vibration deformation amount 1, and generates a detection signal 2 according to the vibration deformation amount 2. Since the resonant cavity will vibrate when the rotor vibrates, the pneumatic sensor can directly sense this vibration and generate a corresponding detection signal, so that the wear of the bearing can be detected, which is convenient for the analysis and treatment of the wear of the bearing.

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Abstract

The invention discloses a bearing wear detection device in a canned pump and a detection method thereof. The detection device includes a connecting piece, a detection probe, a transmission tube and a detection mechanism. The connecting piece is sleeved on the rotor tail of the bearing, and the end away from the bearing is provided with a groove arranged coaxially with the rotor. The detection probe is located in the groove and has a preset distance from the inner wall of the connecting piece. One end of the transmission tube is connected with the detection probe and communicates with the inner cavity of the detection probe. The detection mechanism includes a detection shell, a power supply unit and a displacement sensing unit. The detection shell is connected to the other end of the transfer tube. The power supply unit is installed in the detection case and is used to supply voltage or current to the displacement sensing unit. The displacement sensing unit has a diaphragm and forms a resonant cavity with the transmission tube and the detection probe. The invention can be used repeatedly only by repeatedly replacing the detection probe, improves the detection efficiency and reliability, more accurately determines the wear condition of the bearing, and improves the detection effect.

Description

technical field [0001] The invention relates to a detection device in the technical field of bearing wear detection, in particular to a detection device for bearing wear in a shielded pump, and also to a method for detecting bearing wear in the shielded pump of the device. Background technique [0002] Bearings are an important part of contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. Bearings include sliding bearings, joint bearings, rolling bearings, deep groove ball bearings, angular contact ball bearings, self-aligning ball bearings, thrust ball bearings, two-way thrust angular contact ball bearings, thrust roller bearings, needle roller bearings, etc. There is a rotor assembly. When the radial wear of the bearing occurs, the rotor assembly vibrates while rotating inside the shielded motor. Excessive vibration will directly affect the us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/045
CPCG01M13/045
Inventor 洪占勇闫立强周丽华徐正富徐菘
Owner HEFEI UNIV OF TECH
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