CN209802337U - Measuring device for thickness of hydraulic generator thrust bearing oil film - Google Patents
Measuring device for thickness of hydraulic generator thrust bearing oil film Download PDFInfo
- Publication number
- CN209802337U CN209802337U CN201920305856.8U CN201920305856U CN209802337U CN 209802337 U CN209802337 U CN 209802337U CN 201920305856 U CN201920305856 U CN 201920305856U CN 209802337 U CN209802337 U CN 209802337U
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- CN
- China
- Prior art keywords
- thrust bearing
- oil film
- hydraulic generator
- data
- generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000006073 displacement reaction Methods 0.000 claims abstract description 44
- 238000012544 monitoring process Methods 0.000 claims description 9
- 238000007405 data analysis Methods 0.000 claims description 7
- 238000013500 data storage Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 35
- 230000003068 static effect Effects 0.000 description 16
- 239000010687 lubricating oil Substances 0.000 description 7
- 238000005259 measurement Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000010723 turbine oil Substances 0.000 description 2
- 239000008358 core component Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Abstract
The utility model discloses a measuring device for the thickness of a hydraulic generator thrust bearing oil film, which comprises a data acquisition memory and more than one displacement sensor, wherein the displacement sensor is arranged between a lower frame and a brake disc of a hydraulic generator and is uniformly arranged on the circumference of the inner wall of the lower frame of the generator; the utility model discloses can conveniently accomplish the detection to the oil film thickness, simple and practical.
Description
Technical Field
The utility model relates to a measuring device of hydraulic generator thrust bearing oil film thickness belongs to power station auxiliary assembly's test technical field.
Background
The hydro-generator is a rotating device in which a thrust bearing bears the weight and axial load of a generator rotor, and is a core component of the hydro-generator, which directly affects the safe operation of the hydro-generator set. The thrust bearing is a dynamic pressure bearing lubricated by turbine oil, whether the thrust bearing can normally work depends on an oil film lubrication state, the oil film thickness is an important parameter of the oil film lubrication state, and the detection of the oil film thickness is an important means for detecting the oil film lubrication state.
Because hydraulic generator thrust bearing is located the thrust bearing oil pan, because thrust bearing soaks in turbine oil in the operation, carry out oil film thickness measurement in thrust bearing department and need carry out special treatment, on the other hand installs the atress that the sensor influenced the bearing easily on the thrust tile, and the installation is very inconvenient, dismantles the maintenance that needs to cooperate the unit, so it is inconvenient to carry out the direct detection of oil film thickness in thrust bearing department.
Disclosure of Invention
The utility model provides a measuring device of hydraulic generator thrust bearing oil film thickness, including data acquisition memory 8, an above displacement sensor 9, displacement sensor 9 sets up between hydraulic generator's lower frame 5 and brake disc 7, displacement sensor evenly installs on 5 inner wall circumferences of generator lower frame, a displacement change between lower frame 5 and the brake disc 7 for measure hydraulic generator, displacement sensor 9 is connected with data acquisition memory 8 respectively, data acquisition memory 8 is connected with power plant's computer monitoring system, data acquisition memory 8 filters and weighting processing and give power plant's computer monitoring system with data transfer to received displacement sensor's signal, carry out real-time supervision to oil film thickness.
The data acquisition and storage device 8 comprises a data signal receiving module, a data storage module, a data analysis module and a data signal sending module, the displacement sensor 9 is connected with the data signal receiving module, the data signal receiving module is sequentially connected with the data storage module, the data analysis module and the data signal sending module, and the data signal sending module is connected with a power plant computer monitoring system.
The utility model discloses a measurement principle:
When the hydraulic generator is static, the initial oil film thickness delta X =0 at the thrust bearing 1, after the hydraulic generator is started to operate, the oil film thickness delta X at the thrust bearing 1 is larger than 0, the oil film thickness delta X is relative displacement generated by a rotating part and a static part which are connected with the thrust bearing 1, the rotating part is connected with the rotating main shaft 6 and rotates along with the rotating main shaft 6, the static part is connected with the oil basin base 3, the oil basin base 3 is connected with the lower frame 5 of the generator, the fixed static part of the unit is formed, namely, the delta X is displacement generated between the rotating main shaft 6 and the fixed static part of the unit.
The measuring device of the utility model is used for measuring the displacement variation delta Y between the lower frame 5 and the brake disc 7 of the hydraulic generator, the displacement variation delta Y is equal to the oil film thickness delta X at the thrust bearing 1, the reason is that the lower frame 5 of the generator is connected with the oil basin base 3 and belongs to the fixed and static part of the generator set, the brake disc 7 is connected with the rotating main shaft 6 of the hydraulic generator into a whole and belongs to the rotating part, therefore, the displacement variation delta Y is the displacement generated by the rotating main shaft 6 and the fixed and static part of the unit, when the unit stops, an initial displacement exists between the lower frame 5 of the hydraulic generator and the brake disc 7, when the unit is running, the variation delta Y of the displacement is equal to the oil film thickness delta X of the thrust bearing 1, the oil film thickness can be obtained by measuring the displacement variation between the lower frame 5 and the brake disc 7 of the hydro-generator.
The utility model discloses measuring device has following advantage:
(1) Utility model measuring device mounted position space is big, and installation measuring equipment is easy.
(2) Utility model measuring device does not have oil to soak, and the measuring instrument need not special treatment.
(3) Utility model measuring device is not far away from thrust bearing, can improve measurement accuracy.
Drawings
FIG. 1 is a partial structural view of a thrust bearing of a hydro-generator according to embodiment 1;
Fig. 2 is a layout view of a displacement sensor of the hydro-generator according to embodiment 1;
In the drawings, 1-thrust bearing; 2-bearing lubricating oil basin; 3-oil pan base; 4-a cooler; 5-a lower generator frame; 6-rotating the main shaft; 7-a brake disc; 8-data acquisition memory; 9-displacement sensor.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Example 1
a measuring device for the thickness of a thrust bearing oil film of a hydraulic generator comprises a data acquisition memory 8 and four displacement sensors 9, as shown in figures 1 and 2, wherein the displacement sensors 9 are arranged between a lower frame 5 and a brake disc 7 of the hydraulic generator, the four displacement sensors are uniformly arranged on the circumference of the inner wall of the lower frame 5 of the hydraulic generator and are used for measuring the displacement change between the lower frame 5 and the brake disc 7 of the hydraulic generator, the position B is the installation position of one of the displacement sensors, the measurement precision of the displacement sensor is 0.001mm, the size meets the space position between the lower frame 5 and the brake disc 7 of the hydraulic generator, the lower frame 5 of the hydraulic generator is fixedly connected with an oil basin base 3 and belongs to a fixed static part of a unit, a bearing lubricating oil basin 2 is fixedly connected with the oil basin base 3, a cooler 4 is fixedly connected with the bearing lubricating oil basin 2, the brake disc 7 is arranged inside the lower frame 5 of the hydraulic, the rotating main shaft 6 penetrates through the axes of the brake disc 7 and the lower frame 5 of the hydraulic generator and is fixedly connected with the brake disc 7, the rotating main shaft 6 drives the brake disc 7 to rotate when rotating, the thrust bearing 1 is positioned inside the bearing lubricating oil basin 2, the rotating main shaft 6 drives the thrust bearing 1 to rotate when rotating, the thrust bearing 1 and the brake disc 7 are driven to rotate simultaneously when the rotating main shaft 6 rotates, and the bearing lubricating oil basin 2, the oil basin base 3, the cooler 5 and the lower frame 5 of the generator are static.
when the hydraulic generator is static, the initial oil film thickness delta X =0 at the thrust bearing 1, after the hydraulic generator is started to operate, the oil film thickness delta X at the thrust bearing 1 is larger than 0, the oil film thickness delta X is relative displacement generated by a moving part and a static part at the thrust bearing 1, the rotating part is a rotating main shaft 6, and a bearing lubricating oil basin 2 is fixed and static, namely the oil film thickness delta X is displacement generated between the rotating main shaft 6 and the bearing lubricating oil basin 2 at the fixed and static part of the unit in the operation process of the hydraulic generator.
The measuring device of the embodiment is used for measuring the displacement variation delta Y between the lower frame 5 and the brake disc 7 of the hydraulic generator, the displacement variation delta Y is equal to the oil film thickness delta X at the position of the thrust bearing 1, the generator lower frame 5 is fixedly connected with the oil basin base 3, belongs to a fixed static part of a unit, the brake disc 7 is connected with a rotating main shaft 6 of the hydraulic generator, belongs to a rotating part, the displacement variation delta Y is the displacement generated by the rotating main shaft 6 and the fixed static part of the unit in the running process of the hydraulic generator, when the generator set stops, an initial displacement exists between the lower frame 5 of the hydraulic generator and the brake disc 7, when the generator is running, the variation delta Y of the displacement is equal to the oil film thickness delta X at the thrust bearing 1, the oil film thickness can be obtained by measuring the displacement change between the lower frame 5 and the brake disc 7 of the hydro-generator.
the four displacement sensors 9 are respectively connected with a data acquisition memory 8, the data acquisition memory 8 comprises a data signal receiving module, a data storage module, a data analysis module and a data signal sending module, the displacement sensors 9 are connected with the data signal receiving module, the data signal receiving module is sequentially connected with the data storage module, the data analysis module and the data signal sending module, the data signal sending module is connected with a power plant computer monitoring system, the data acquisition memory 8 is connected with the power plant computer monitoring system, when a unit is static, the initial displacement between a generator lower rack 5 and a brake disc 7 is firstly measured, the variation of the displacement is measured after the unit is started, the data is stored in the data acquisition memory, the output signal of the displacement sensors 9 is connected with the data acquisition memory 8 through a connecting lead, and the data is filtered and weighted and averaged through an internal data analysis module, and uploading the processed data to a computer monitoring system of the power plant, and displaying the result through the monitoring system.
Claims (2)
1. The utility model provides a measuring device of hydraulic generator thrust bearing oil film thickness which characterized in that, includes data acquisition memory, more than one displacement sensor, and displacement sensor sets up between hydraulic generator's lower frame and brake disc, evenly installs on generator lower frame inner wall circumference, and displacement sensor is connected with data acquisition memory respectively, and data acquisition memory is connected with power plant's computer monitoring system.
2. The device for measuring the thickness of the oil film of the thrust bearing of the hydraulic generator according to claim 1, wherein the data acquisition and storage device comprises a data signal receiving module, a data storage module, a data analysis module and a data signal sending module, the displacement sensor is connected with the data signal receiving module, the data signal receiving module is sequentially connected with the data storage module, the data analysis module and the data signal sending module, and the data signal sending module is connected with a computer monitoring system of a power plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920305856.8U CN209802337U (en) | 2019-03-12 | 2019-03-12 | Measuring device for thickness of hydraulic generator thrust bearing oil film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920305856.8U CN209802337U (en) | 2019-03-12 | 2019-03-12 | Measuring device for thickness of hydraulic generator thrust bearing oil film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209802337U true CN209802337U (en) | 2019-12-17 |
Family
ID=68824255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920305856.8U Expired - Fee Related CN209802337U (en) | 2019-03-12 | 2019-03-12 | Measuring device for thickness of hydraulic generator thrust bearing oil film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209802337U (en) |
-
2019
- 2019-03-12 CN CN201920305856.8U patent/CN209802337U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191217 Termination date: 20200312 |
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| CF01 | Termination of patent right due to non-payment of annual fee |