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Sealing detection device and sealing detection method

A technology of sealing detection and sealing ring, which is applied in the direction of liquid tightness measurement using liquid/vacuum degree, and by measuring the increase and deceleration rate of fluid, etc., which can solve the problems of time-consuming and complicated operation

Pending Publication Date: 2021-04-02
CRRC YONGJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, it is time-consuming and complicated to use the testing device for self-sealing bearings to test the sealing of the bearing seals of open bearings

Method used

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  • Sealing detection device and sealing detection method
  • Sealing detection device and sealing detection method
  • Sealing detection device and sealing detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] figure 1 A cross-sectional view of the sealing detection device provided in Embodiment 1; figure 2 for figure 1 left view of image 3 for figure 1 right view of .

[0059] like Figure 1 to Figure 3 As shown, the seal detection device provided by the embodiment of the present disclosure includes a bearing 40 seat 10, a bearing 40, a rotating shaft 50, a first seal 20, a second seal 30 and an air pressure detection device.

[0060] The bearing 40 seat 10 can be regarded as the support of the seal detection device, which plays the role of supporting and connecting other components. Bearing 40 seat 10 is provided with bearing 40 hole 11, and bearing 40 is installed in bearing 40 hole 11, and rotating shaft 50 is set on the inner ring of bearing 40, so that rotating shaft 50 can drive bearing 40 inner ring relative bearing 40 seat 10 to rotate. The first seal 20 is arranged on one side of the bearing 40 to block the bearing 40 hole 11 on one side of the bearing 40, a...

Embodiment 2

[0072] Figure 4 Schematic diagram of the structure of the seal detection device provided in this embodiment; Figure 5 The principle diagram of the sealing detection device provided for this embodiment.

[0073] like Figure 4 and Figure 5 As shown, the seal detection device also includes a box body 70 and a dust stirring device 90, the bearing 40 seat 10 is accommodated in the box body 70, and the rotating shaft 40 is sealed and connected with the box body 70 through a sealing ring 71; the box body 70 is provided with dust , The dust stirring device 90 is used to stir the dust in the box 70 so that the dust is suspended in the box 70 . The dust stirring device 90 stirs the dust in the box body 70, so that the dust is suspended in the box body 70, so that the actual use environment of the sealing device of the bearing 40 can be simulated, and the bearing 40, the first sealing member 20 and the second sealing member 30 are in this environment After running for a certain p...

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Abstract

The embodiment of the invention provides a sealing detection device and a sealing detection method, belongs to the field of bearing sealing detection, and aims to solve the problem that equipment anda method suitable for effectiveness of a labyrinth sealing structure and a lubricating structure of a traction motor bearing do not exist. A second sealing piece comprises a first sealing ring connected with a bearing pedestal and a second sealing ring arranged on a rotating shaft in a sleeving mode, the first sealing ring and the second sealing ring are partially staggered, a sealing gap is formed between the staggered parts of the first sealing ring and the second sealing ring, and the sealing gap bends and extends towards the rotating shaft and communicates with the bearing hole and the external space; and an air pressure detection device is used for detecting air pressure of a first position and a second position in the sealing gap, and the first position and the second position are arranged at intervals in the radial direction of the rotating shaft. In this way, whether gas flows in the sealing gap or not can be judged by detecting the air pressure difference between the first position and the second position, and then the sealing effect of the sealing unit is judged.

Description

technical field [0001] Embodiments of the present disclosure relate to the field of bearing seal detection, and in particular, to a seal detection device and a seal detection method. Background technique [0002] The traction motor used for locomotive travel usually includes a machine base, a stator and a rotor. The machine base encloses an installation space with shaft holes at both ends. The stator is fixed in the machine base, and the rotor is rotatably inserted on the stator and the rotor The rotor shaft extends out of the base through the shaft hole, and a bearing is installed between the shaft hole and the rotor shaft to support the rotor shaft. In order to prevent foreign dust and other impurities from entering the bearing and causing bearing wear, the bearing needs to be sealed. One way of sealing is to use self-sealing bearings; the other way is to use open bearings, and set bearing seals on the side of the bearing away from the installation space. [0003] In the...

Claims

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Application Information

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IPC IPC(8): G01M3/26
CPCG01M3/26
Inventor 李伟石永进武志民谷运龙
Owner CRRC YONGJI ELECTRIC CO LTD