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Device for measuring elevation of bearing of turbo generator set

A turbo-generator and elevation measurement technology, which is applied in the direction of measuring devices, electric devices, and electromagnetic means, can solve the problems of time-consuming installation and debugging of eddy current displacement sensors, the inability to adjust the height of the measuring bracket, and the easy damage of the measuring bracket. Achieve the effect of simple and reliable structure, reduce measurement error and improve measurement accuracy

Inactive Publication Date: 2011-07-20
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For units with end cover bearings, it is difficult to isolate the location of the measurement bracket from the measurement point, which makes the measurement results greatly affected by the vibration of the measurement point, and the measurement accuracy is greatly reduced; secondly, the height of the measurement bracket cannot be adjusted, and the measurement bracket is relatively heavy. Long, not easy to stabilize, time-consuming installation and debugging of eddy current displacement sensor, measuring bracket is easily damaged

Method used

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  • Device for measuring elevation of bearing of turbo generator set
  • Device for measuring elevation of bearing of turbo generator set
  • Device for measuring elevation of bearing of turbo generator set

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Embodiment 1: as Figure 1 to Figure 4 As shown, a turbine generator bearing elevation measuring device includes a reference cup 1, a measuring cup 2 and a connecting hose 3. The reference cup 1 and the measuring cup 2 are filled with liquid, and the two are connected through the connecting hose 3. The measuring cup Both sides of the measuring cup 2 are provided with a measuring cup fixing device 4, and the bottom of the reference cup 1 is provided with a height-adjustable reference cup supporting device 6, and the mouth of the reference cup 1 or measuring cup 2 is equipped with a device that can detect the change of the liquid level in the cup. Measuring device 5. In this embodiment, the measuring device 5 is installed at the mouth of the measuring cup 2, and its measuring range is -2000 μm~+2000 μm. The invention utilizes the principle of the connecting device, can measure the change of the bearing elevation of the steam turbine generator set, and analyze the relation...

Embodiment 2

[0068] Embodiment 2: This embodiment is basically the same as Embodiment 1, the only difference is that the structure of the measuring cup fixing device 4 in this embodiment is different, such as Figure 5 and Image 6 As shown, in the measuring cup fixing device 4 of this embodiment, the magnetic adsorption device 401 adopts a self-made magnetic base 407, and a permanent magnet bar 408, two arc-shaped soft irons 409 and two brass blocks are installed in the magnetic base 407 410, two pieces of arc-shaped soft iron 409 and two pieces of brass blocks 410 form a ring and are arranged alternately. In the ring shape, rotating the permanent magnet bar 408 can control the on-off of the magnetic field. In this embodiment, the pressing plate 403 and the magnetic base 407 are integrally formed, and the structure is simpler.

Embodiment 3

[0069] Embodiment 3: This embodiment is basically the same as Embodiment 1, and the only difference is that the structure of the measuring cup fixing device 4 in this embodiment is different, such as Figure 7 and Figure 8 As shown, in the measuring cup fixing device 4 of this embodiment, the magnetic adsorption device 401 is made of a permanent magnet, and no magnetic field on-off control switch is provided. The pressure plate 403 and the magnetic adsorption device 401 are integrally formed, and the structure is simpler and the manufacturing cost is lower. Low.

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Abstract

The invention discloses a device for measuring the elevation of a bearing of a turbo generator set, which comprises a reference cup, a measurement cup and a communicating hose. The reference cup and the measurement cup are communicated with each other by the communication hose. The reference cup and the measurement cup are provided with liquid inside. Both sides of the measurement cup are provided with a measurement cup fixing device. The bottom of the reference cup is provided with a reference cup supporting device which can be adjusted in height. A cup mouth of the measurement cup or the reference cup is provided with a measurement device which can detect the variation of the height of the liquid level in the cup. The device for measuring the elevation of the bearing of the turbo generator set has the advantages of capacity of flexibly selecting the installation position, convenient installation and positioning and high measurement accuracy.

Description

technical field [0001] The invention relates to testing equipment in the field of vibration testing of a steam turbine unit, in particular to a device for measuring the elevation of a bearing of a steam turbine generator. Background technique [0002] The structure of the turbogenerator set is usually a multi-rotor support system, which is connected with each other through couplings, and the support of the shaft system is complex, which is a statically indeterminate structure. Some of the bearings are floor bearings, and some bearings are located on the cylinder or the end cover of the generator. During the operation of the turbogenerator set at high temperature, high pressure, and high speed, both the rotor and the stator have a temperature gradient along the axial direction, and the temperature gradient changes with the change of the unit's working conditions, so that it can be adjusted well under normal temperature and cold state. For the unit at the center of the shaft ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/02
Inventor 饶洪德李录平张陈材李江林
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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