CN221377045U - Rotor test bed supported by air foil bearing - Google Patents
Rotor test bed supported by air foil bearing Download PDFInfo
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- CN221377045U CN221377045U CN202321748877.XU CN202321748877U CN221377045U CN 221377045 U CN221377045 U CN 221377045U CN 202321748877 U CN202321748877 U CN 202321748877U CN 221377045 U CN221377045 U CN 221377045U
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- 239000011888 foil Substances 0.000 title claims abstract description 63
- 238000012360 testing method Methods 0.000 title claims abstract description 21
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 238000006073 displacement reaction Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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Abstract
The utility model provides a rotor test bed supported by an air foil bearing, which comprises a table top plate, a workbench and a driving system, wherein the table top plate is arranged on the workbench; the rotor is driven by adopting a high-speed air flow driving mode, so that the upper limit of the rotating speed of the rotor can be increased, the rotor can reach super-high speed, and the number and the angle of the nozzles can be changed to change the power; because the air flow driving mode is adopted, the whole test bed is under the condition of no electromagnetic interference, the measurement of the sensor is more accurate, and the electromagnetic interference in the measurement process is reduced; in addition, the data acquisition system is convenient for analyzing and storing related data information in the testing process, so that the rotor test bed is more digital, the obtained data is more accurate, and the comparison analysis is convenient for optimizing the product in the later period; the rotor is supported by adopting a pair of radial air foil bearings and thrust air foil bearings, and the foil air bearings have better rotor vibration and eccentric adaptability, so that the requirements of the rotor under the ultra-high speed condition can be met.
Description
Technical Field
The utility model relates to the field of air foil bearing tests, in particular to a rotor test stand supported by an air foil bearing.
Background
The air foil bearing is an elastic dynamic pressure bearing which takes air as a lubricating medium, and is also called a foil dynamic pressure air thrust bearing. Foil air bearings are widely used in the fields of small turbojet engines, micro gas turbines, turbine refrigerators, air suspension centrifugal blowers, etc. by virtue of their excellent properties of oil free, low friction loss, long life and high rotational speed. At present, hydrogen energy automobiles are gradually commercialized, and foil air bearings are gradually popularized and applied to hydrogen fuel cell air compressors.
The air foil bearing after design and sample preparation is required to be tested on a simulation test bench, such as take-off rotation speed, friction power consumption, friction torque, bearing capacity and the like, and structural parameters of the bearing are adjusted according to test results to optimize until design requirements are met. The method of measuring the bearing capacity for a thrust air foil bearing in patent CN110849622B is cumbersome. In CN213121109U, a high-speed motor is used as a drive, and when the high-speed motor works, strong electromagnetic interference is generated, which affects the use of the sensor, and the collected data has a lot of noise.
Accordingly, there is a need to provide an air foil bearing supported rotor test stand that addresses the above-described problems.
Disclosure of utility model
The utility model provides a rotor test bed supported by an air foil bearing, which solves the problem of adjusting structural parameters of the bearing according to a test result to optimize until the design requirement is met.
In order to solve the technical problems, the rotor test stand supported by the air foil bearing comprises a table top plate and a workbench, wherein a driving system, a measuring system, a bearing system, a loading system and a data acquisition system are arranged on the table top plate and the workbench;
A drive system mounted to the table top may provide the power required to rotate the rotor.
The loading function of static load is realized by changing the gap between the thrust disc and the thrust air foil bearing through rotating the loading bolt on the cylindrical block mounting seat;
The data acquisition system comprises a data acquisition card and a computer, and the data acquisition card is used for transmitting the information of the sensor to the computer to acquire and store related data.
Preferably, the driving system comprises a nozzle, a nozzle rotating seat, a nozzle mounting seat and a protection ring; the nozzle is connected with the air compressor; the nozzle is fixed on the nozzle rotating seat; the nozzle rotating seat can adjust the angle between the nozzle and the impeller; the nozzle rotating seat is fixed on the nozzle mounting seat; the protection ring is fixed on the nozzle mounting seat.
Preferably, the driving system can complete the adjustment of power by changing the number or the angle of the nozzles, and the adjustment of the rotating speed of the rotor is completed by matching with the rotating speed sensor.
Preferably, the measuring system comprises a displacement sensor, a rotating speed sensor, a pressure sensor and a temperature sensor; the displacement sensor respectively measures the displacement of the rotor in the vertical direction and the horizontal direction; the rotation speed sensor measures the rotation speed of the rotor; the pressure sensor measures the size of the thrust foil bearing forming stable bearing capacity; the temperature sensor is respectively arranged on the radial air foil bearing mounting seat and the thrust air foil bearing mounting seat.
Preferably, the cylindrical block in the measuring system is mounted on a cylindrical block mounting seat, and a plane is arranged on the cylindrical block for preventing left and right movement of the cylindrical block, and the cylindrical block is fixed by bolts.
Preferably, the pressure sensor is connected between the thrust foil bearing mounting seat cylindrical blocks, and when the thrust disc and the thrust air foil bearing form a stable air film, the pressure sensor can measure the bearing capacity.
Preferably, the displacement sensor is arranged on a displacement sensor mounting frame, and waist holes are formed in the mounting frame, so that the position of the displacement sensor can be adjusted, and the axle center tracks of different positions of the rotor can be measured.
Preferably, the rotation speed sensor is matched with a reflection strip attached to the thrust disc, the obtained pulse signal is transmitted to a computer, and the rotation speed of the rotor can be obtained through calculation.
Preferably, the temperature sensors are mounted on a radial air foil bearing mount and a thrust air foil bearing mount, respectively.
Preferably, the bearing system comprises a radial air foil bearing and a thrust air foil bearing and a radial air foil bearing mount and a thrust air foil bearing mount and a rotor; the rotor comprises a rotating shaft, a thrust disc and a thrust disc tightening nut;
preferably, the loading system comprises a loading bolt, an end cover and an end cover fixing bolt, the cylindrical block is pushed by rotating the loading bolt, and the gap between the thrust air foil bearing and the thrust disc is changed to complete the loading function.
Compared with the related art; the rotor test bed supported by the air foil bearing has the following beneficial effects:
The utility model provides a rotor test bed supported by an air foil bearing;
1. the utility model adopts a high-speed air flow driving mode to drive the rotor, can improve the upper limit of the rotating speed of the rotor, ensures that the rotor reaches super-high speed, and can change the number and the angle of the nozzles to change the power.
2. The utility model adopts an air flow driving mode, so that the whole test bed is under the condition of no electromagnetic interference, the measurement of the sensor is more accurate, and the electromagnetic interference in the measurement process is reduced. In addition, the data acquisition system is convenient for analyzing and storing related data information in the testing process, so that the rotor test bed is more digital, the obtained data is more accurate, and the comparison analysis is convenient for optimizing the product in the later period.
3. The utility model adopts a pair of radial air foil bearings and thrust air foil bearings to support the rotor, and the foil air bearings have better rotor vibration and eccentric adaptability, so that the requirements of the rotor under the ultra-high speed condition can be met.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a schematic view of the structure of the workbench, bearing system and loading system of the utility model;
FIG. 3 is a schematic diagram of a driving system according to the present utility model;
FIG. 4 is a schematic diagram of a displacement sensor system according to the present utility model;
FIG. 5 is a schematic diagram of a rotational speed sensor system according to the present utility model;
FIG. 6 is a schematic diagram of a pressure sensor system of the present utility model;
FIG. 7 is a schematic view of a temperature sensor mounting structure of the present utility model;
FIG. 8 is a schematic view of a bearing system according to the present utility model;
FIG. 9 is a schematic diagram of a loading system according to the present utility model;
Fig. 10 is a schematic diagram of a data acquisition system according to the present utility model.
Reference numerals in the drawings: 1. a table top; 2. a work table; 3. a drive system; 4. a measurement system; 5. a bearing system; 6. loading a system; 7. a data acquisition system; 31. a nozzle; 32. a nozzle rotating seat; 33. a nozzle mount; 34. a protective ring; 4a1, a displacement mounting frame 1;4a2, displacing the top of the mounting rack; 4a3, displacement mounting frame 2;4a4, a displacement sensor 1;4a5, a displacement sensor 2;4b1, a rotation speed sensor; 4b2, a rotating speed sensor fixing frame; 4b3, a rotating speed sensor mounting seat; 4c1, a pressure sensor; 4c2, a cylindrical block mounting seat; 4c3, a cylindrical block; 4c4, screwing a bolt on the cylindrical block; 4d1, a temperature sensor; 51. a rotating shaft; 52. a radial air foil bearing mount; 53. radial air foil bearings; 54. the thrust spiral tightens the nut; 55. thrust air foil bearing mount 551; 56. a thrust plate; 57. a thrust air foil bearing mount 552; 58. thrust air foil bearing; 59. a rotor; 61. loading a bolt; 62. an end cover fixing bolt; 63. an end cap; 71. a data acquisition card; 72. and a computer.
Detailed Description
The utility model will be further described with reference to the drawings and embodiments.
As shown in fig. 1, 2 and 3, the utility model provides a rotating shaft 51 test stand supported by an air foil bearing, which comprises a table top 1 and a workbench 2, wherein a driving system 3, a measuring system 4, a bearing system 5, a loading system 6 and a data acquisition system 7 are arranged on the table top 1 and the workbench 2; the workbench 2 is arranged on the desktop plate 1, the driving system 3 comprises a nozzle 31, a nozzle rotating seat 32, a nozzle mounting seat 33 and a protection ring 34, the nozzle 31 is connected with an air compressor, the nozzle 31 is fixed on the nozzle rotating seat 32, the nozzle rotating seat 32 can adjust the angle between the nozzle 31 and a rotating shaft 51, the nozzle rotating seat 32 is fixed on the nozzle mounting seat 33, and the protection ring 34 is fixed on the nozzle mounting seat 33.
In addition, more explanation is that: as shown in fig. 4, 5 and 6, the measurement system 4 in this embodiment includes a displacement sensor 4a4, a displacement sensor 4a5, a rotation speed sensor 4b1, a pressure sensor 4c1 and a temperature sensor 4d1, where the displacement sensor 4a4 and the displacement sensor 4a5 measure the displacement of the rotation shaft 51 in the vertical and horizontal directions, respectively, the displacement sensor 4a4 is mounted on a displacement sensor mounting rack top 4a2, one of the displacement sensors 4a5 is mounted on a displacement sensor rack 4a3, and waist holes are provided on the displacement sensor mounting rack top 4a2 and the displacement sensor rack 4a3, so that the positions of the displacement sensor 4a4 and the displacement sensor 4a5 can be adjusted. The rotating speed sensor 4b1 is installed on the rotating speed sensor fixing frame 4b2 to measure the rotating speed of the rotating shaft 51, the rotating speed sensor fixing frame 4b2 is fixed on the rotating speed sensor mounting seat 4b3, the pressure sensor 4c1 is used for measuring the thrust air foil bearing 58 to form the stable bearing capacity, the pressure sensor 4c1 is connected with the cylindrical block 4c3 through threads, a plane is arranged on the cylindrical block 4c3, and the cylindrical block 4c3 and the cylindrical block mounting seat 4c2 are fixed together through the cylindrical block screwing bolt 4c 4. A plurality of temperature sensors 4d1 are provided to be mounted on the radial air foil bearing mount 52 and the thrust air foil bearing mount 55.
In addition, more explanation is that: the bearing system 5 in this embodiment, as shown in fig. 7, the bearing system 5 includes a radial air foil bearing 53 and a thrust air foil bearing 58 and a corresponding radial air foil bearing mount 52, thrust air foil bearing mount 55, thrust air foil bearing mount 57, and a rotor 59, the rotor 59 including a rotating shaft 51, a thrust disk 56, and a thrust disk tightening nut 54.
In addition, more explanation is that: the loading system 6 in the present embodiment, as shown in fig. 8, the loading system 6 includes a loading bolt 61, an end cover 63, and an end cover fixing bolt 62, and the loading function is completed by rotating the loading bolt 61 to push the cylindrical block 4c3 to change the gap between the thrust air foil bearing 58 and the thrust disk 56.
In addition, more explanation is that: the loading system 6 in the present embodiment, as shown in fig. 8, the loading system 6 includes a loading bolt 61, an end cover 63, and an end cover fixing bolt 62, and the loading function is completed by rotating the loading bolt 61 to push the cylindrical block 4c3 to change the gap between the thrust air foil bearing 58 and the thrust disk 56.
In addition, more explanation is that: the data acquisition system 7 in this embodiment, as shown in fig. 9, includes a data acquisition card 71 and a computer 72.
The working principle of the utility model is as follows: firstly, an air compressor connected with the nozzle 31 is started to provide power for the rotation of the rotor 59, the measuring system 4 is opened to measure various physical parameters, and the data acquisition card 71 and the computer 72 are used for processing and storing, so that the rotation speed of the rotor 59, the axis track, the bearing capacity of the thrust air foil bearing 58 and the temperatures of the radial air foil bearing 53 and the thrust air foil bearing 58 can be obtained.
The foregoing is merely exemplary of the utility model; and thus do not limit the scope of the utility model; all equivalent structures or equivalent flow transformations by utilizing the contents of the specification and drawings of the present utility model; or directly or indirectly applied to other related technical fields; and are equally included in the scope of the utility model.
Claims (3)
1. The rotor test bed supported by the air foil bearing is characterized by comprising a table top plate and a workbench; the device also comprises a driving system, a measuring system, a bearing system, a loading system and a data acquisition system which are arranged on the table top plate and the workbench;
A driving system: the driving system comprises a nozzle, a nozzle rotating seat, a nozzle mounting seat and a protection ring;
Measurement system: the measuring system comprises a displacement sensor, a rotating speed sensor, a pressure sensor and a temperature sensor;
Bearing system: the bearing system comprises a radial air foil bearing, a radial air foil bearing mounting seat, a thrust foil bearing mounting seat and a rotor;
Loading a system: the loading system comprises a loading bolt, an end cover and an end cover fixing bolt;
And a data acquisition system: the data acquisition system comprises a data acquisition card and a computer;
The nozzle is fixed on the nozzle rotating seat; the nozzle rotating seat and the protection ring are fixed on the nozzle mounting seat; the nozzle rotating seat can rotate on the nozzle mounting seat to change the angle of the nozzle.
2. The air foil bearing supported rotor stand of claim 1, wherein the rotational speed sensor is mounted on a rotational speed mount, the rotational speed sensor mount being mounted on a rotational speed sensor mount; the pressure sensor is arranged between the cylindrical block and the thrust air foil bearing; the temperature sensors are respectively arranged on the radial air foil bearing mounting seat and the thrust air foil bearing mounting seat.
3. The air foil bearing supported rotor stand of claim 1, wherein the rotor comprises a spindle, a thrust disc tightening nut; the thrust disc is tightly fixed on the rotating shaft by screwing the nut on the thrust disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321748877.XU CN221377045U (en) | 2023-07-05 | 2023-07-05 | Rotor test bed supported by air foil bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321748877.XU CN221377045U (en) | 2023-07-05 | 2023-07-05 | Rotor test bed supported by air foil bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221377045U true CN221377045U (en) | 2024-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321748877.XU Active CN221377045U (en) | 2023-07-05 | 2023-07-05 | Rotor test bed supported by air foil bearing |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118584133A (en) * | 2024-08-06 | 2024-09-03 | 浙江清华长三角研究院 | A rapid measurement device for take-off speed of radial air foil bearing |
-
2023
- 2023-07-05 CN CN202321748877.XU patent/CN221377045U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118584133A (en) * | 2024-08-06 | 2024-09-03 | 浙江清华长三角研究院 | A rapid measurement device for take-off speed of radial air foil bearing |
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