CN211317752U - Foil gas bearing comprehensive experiment table device - Google Patents

Abstract

The utility model relates to a foil gas bearing load loading experimental apparatus technical field specifically discloses a foil gas bearing comprehensive experiment platform device, including axial load loading unit, radial load loading unit, rotor system laboratory bench main part unit, sensor unit and base, axial load loading unit, radial load loading unit, rotor system laboratory bench main part unit and sensor unit with base fixed connection runs through rotor system laboratory bench main part unit is provided with the pivot, the pivot is relative rotor system laboratory bench main part unit rotates the connection, axial load loading unit, radial load loading unit do not give axial and radial load are applyed in the pivot. The utility model discloses there is not friction, vibration is little in the loading process, and static load is reliable and stable, and dynamic load size, frequency are controllable.

Description

Foil gas bearing comprehensive experiment table device

Technical Field

The utility model belongs to the technical field of foil gas bearing load loading experimental apparatus, specificly relate to a foil gas bearing comprehensive experiment platform device.

Background

Rotary machines have important applications in various fields, and with the continuous growth of the Chinese economy, the development of rotary machine equipment also focuses more and more on the environmental impact and the energy utilization efficiency. As a key component in rotating mechanical equipment, bearings play a crucial role in the development trend of energy-saving equipment. The types of bearings commonly used at present are oil-lubricated sliding bearings, rolling bearings, ceramic bearings, electromagnetic bearings, gas bearings, etc. The foil gas bearing is a high-tech product which is rapidly developed in the bearing industry, and compared with a traditional rolling bearing or an oil sliding bearing, the foil gas bearing has many advantages, such as non-contact support during stable operation, extremely small friction, maintenance-free, high motion precision, high-speed adaptation, wide temperature range adaptation, oil-free lubrication, more compact structure, lower cost, long service life and the like, so the foil gas bearing has absolute advantages in the fields of high-speed support, low-friction power consumption support, high-precision support and special working condition support, is widely applied to civil and aerospace national defense fields such as precision instruments, medical instruments, high-speed micro power and the like, and has obvious superiority in the technical fields of ultra-high-speed rotating machinery and ultra-precision instruments.

The development of the gas bearing is difficult, the gas bearing is reflected in the design and research stage of a product and also in the product test stage in the later stage, and because the foil gas bearing is arranged in a rotating mechanical structure in the test process, the actual working environment is not easy to simulate under the high-speed rotating state, and a plurality of problems such as load application on a rotating shaft, working medium change, experimental data acquisition and the like are not easy to solve. The dynamic characteristic test of the foil gas bearing under different load conditions needs a corresponding loading device to simulate the load condition during high-speed rotation, and the characteristic analysis of the foil gas bearing under the load condition is completed.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a foil gas bearing comprehensive experiment table device and an experiment method for studying unbalanced response characteristic, takeoff speed, critical speed characteristic and stability of a gas bearing. The experimental device has the following characteristics:

1) the non-contact electromagnetic load is adopted to load the rotor, the rotor is not contacted in the loading process, and the influence of friction generated by contact on an experimental result is avoided;

2) the static load is stable and variable in size, is easy to control, and can be loaded when the rotor runs at a high speed;

3) the dynamic loading can be carried out when the device operates at different rotating speeds, the load size and the frequency can be adjusted, and the actual working conditions such as impact load and the like can be simulated;

4) the multi-sensor combination can simultaneously acquire experimental parameters of the radial foil gas bearing and the axial thrust bearing;

5) the pressure, flow and medium type of a lubricating medium in the working environment of the dynamic pressure gas bearing are adjustable. In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a foil gas bearing comprehensive experiment table device, which comprises an axial load loading unit, a radial load loading unit, a rotor system experiment table main body unit provided with a foil gas bearing to be tested, a sensor unit and a base, the main body unit of the rotor system experiment table is internally provided with a bearing to be tested, the axial load loading unit, the radial load loading unit, the main body unit of the rotor system experiment table and the sensor unit are fixedly connected with the base, a rotating shaft is arranged through the main body unit of the rotor system experiment table, the rotating shaft is rotationally connected with the rotor system experiment table main body unit, the load discs of the axial load loading unit and the radial load loading unit are fixedly connected with the rotating shaft, the sensor unit is located between the radial load loading unit and the rotor system experiment table main body unit.

In the technical scheme, the rotor system experiment table main body unit enables the rotating shaft to rotate in the foil gas bearing to be tested, the axial load loading unit gives axial load to the foil gas bearing to be tested through the rotating shaft, the radial load loading unit gives radial load to the foil gas bearing to be tested through the rotating shaft, the axial load and the radial load are conveniently applied to the foil gas bearing in the high-speed rotation process in the test of testing the characteristics of the foil gas bearing, and the sensor unit is used for detecting the characteristics of the foil gas bearing during the test.

For optimization, the radial load loading unit comprises a left radial load loading unit and a right radial load loading unit, the left radial load loading unit and the right radial load loading unit are respectively and symmetrically arranged on two sides of the rotor system experiment table main body unit, and the sensor unit is located between the right radial load loading unit and the rotor system experiment table main body unit.

In this way, different radial load conditions can be tested.

As optimization, the test platform further comprises a control unit, a data acquisition and analysis unit and a circulation unit, wherein the control unit comprises an electromagnet controller and a motor controller, the electromagnet controller is electrically connected with the axial load loading unit and the radial load loading unit, and the motor controller is electrically connected with the rotor system test platform main body unit; the data acquisition and analysis unit comprises a computer and a data acquisition card, the computer is electrically connected with the data acquisition card, and the data acquisition card is respectively and electrically connected with the axial load loading unit, the radial load loading unit, the rotor system experiment table main body unit and the sensor unit; the circulation list includes cooling circulation water tank, fan and gaseous medium loader, cooling circulation water tank with rotor system experiment table main part unit passes through the pipe connection, the fan pass through the pipeline with axial load loading unit, radial load loading unit are connected, gaseous medium loader pass through the pipeline with rotor system experiment table main part unit connects.

Thus, the motor controller sends out a control signal to control the start-stop and the rotation speed regulation of the rotor system experiment table main body unit; the electromagnet controller can control the load of the axial load loading unit and the radial load loading unit; the data acquisition card can acquire data of the axial load loading unit (01), the radial load loading unit, the rotor system experiment table main body unit (03) and the sensor unit (04), and input the acquired data into the computer in real time to complete real-time monitoring of the foil gas bearing and the rotor system experiment table main body unit; the cooling circulating water tank is connected with a water inlet and a water outlet of the rotor system experiment table main body unit through a water pipe to cool the motor, and the fan is connected to cooling pipe interfaces in the axial load loading unit and the radial load loading unit through hoses to cool the axial electromagnet and the radial electromagnet of the fan; the gas medium loader leads the gas medium into the cavity shell, different experiments are carried out by changing the type, pressure and flow of the medium, and the characteristics of the foil gas bearing to be tested are detected.

As an optimization, the rotor system experiment table main body unit comprises a cavity shell, a left end cover, a right end cover, a bearing cover, a motor and a rotating part, the rotating part is sleeved and fixed on the rotating shaft, the cavity shell is fixedly connected to the base, the left end cover and the right end cover are detachably connected to two sides of the cavity shell, the bearing cover is detachably connected to the right end cover, the rotating part comprises a motor, a bearing rotor a, a bearing rotor b, a thrust disc, an axial load loading unit and a load disc of a radial load loading unit, and the motor is installed inside the cavity shell and electrically connected with the motor controller; the motor comprises a motor stator and a rotor, wherein the rotor is a motor permanent magnet, the motor permanent magnet is matched with the motor stator, a radial foil gas bearing a and a radial foil gas bearing b are detachably connected to the left end cover and the right end cover through bolts respectively, the radial foil gas bearing a and the radial foil gas bearing b are matched with the bearing rotor a and the bearing rotor b which are sleeved on the rotating shaft respectively, foil thrust bearings are fixed on the right end cover and the bearing cover respectively, the thrust disc is arranged between the two foil thrust bearings, a first sealing ring is arranged between the rotating shaft and the left end cover, a second sealing ring is arranged between the rotating shaft and the bearing cover, a cooling flow passage shell is fixed on the cavity shell, a cooling water flow passage is arranged in the cooling flow passage shell, and the cooling water flow passage is spiral around the cavity shell, an elastic sealing ring is arranged between the cooling water flow channel and the cooling flow channel shell, and the cooling water flow channel is connected with the cooling circulating water tank; the left end cover is provided with an air inlet hole, the bearing cover is provided with an air outlet hole, and the air inlet hole and the air outlet hole are respectively connected with the gas medium loader.

Thus, the motor stator is fixed in the cavity shell, when the motor controller sends out a control signal to control the starting and stopping of the motor and the regulation of the rotating speed, the motor permanent magnet drives the rotating shaft to rotate by adjusting the current and the frequency of the stator coil, and the rotating shaft drives other parts on the shaft to rotate; the cooling liquid of the cooling circulation water tank circulates in the cooling flow channel of the cavity shell, and the first sealing ring and the second sealing ring can prevent gas inside the cavity from leaking for heat dissipation of the motor.

Preferably, a plurality of thermocouple sensors are respectively and uniformly distributed on the outer circumferential circular surfaces of the radial foil gas bearing a and the radial foil gas bearing b and on the surface of the bearing cover, an acceleration sensor is mounted above the cavity shell, and the thermocouple sensors and the acceleration sensor are connected with the data acquisition card.

Therefore, the plurality of thermocouple sensors on the radial foil gas bearing are uniformly distributed on the outer circular surface of a single bearing and used for detecting the temperature parameters of the radial foil gas bearing; the thermocouple sensors are arranged on the bearing cover and used for detecting the temperature parameters of the thrust bearing foil; the acceleration sensor is used for detecting the vibration condition of the main body unit of the whole rotor system experiment table.

As an optimization, the axial load loading unit includes an axial electromagnet mounting bracket, an axial force loading electromagnet, a first slider, a first S-shaped tension and pressure sensor horizontally arranged, an axial load disc and a first box body, the axial load disc is fixed on the rotating shaft, an air gap is provided between the axial load disc and the first box body, the first slider is connected with the axial electromagnet mounting bracket in a sliding manner, the axial electromagnet mounting bracket is fixed on the base, one side of the first S-shaped tension and pressure sensor is fixed on the axial electromagnet mounting bracket, the other side of the first S-shaped tension and pressure sensor is fixedly connected with the first slider, the first box body is fixed on the first slider, the axial force loading electromagnet is installed in the first box body, and a first cooling pipe is further arranged in the first box body, the first cooling pipe is connected with the fan, the first S-shaped pull pressure sensor is electrically connected with the data acquisition card, and the electromagnet controller is electrically connected with the axial force loading electromagnet.

Therefore, the first S-shaped tension and pressure sensor is used for detecting the axial load condition of the main body unit of the rotor system experiment table, when the electromagnet controller controls the axial force loading electromagnet to start, the axial force loading electromagnet generates axial magnetic attraction force to load an axial load disc, the axial load disc transmits the load to the rotating shaft, due to the action of force, the axial force loading electromagnet simultaneously provides thrust for the first sliding block, the first sliding block moves leftwards to compress the first S-shaped tension and pressure sensor, and the first S-shaped tension and pressure sensor transmits the detected axial load to the computer through the data acquisition card.

As an optimization, the radial load loading unit includes a radial electromagnet mounting bracket, a radial force loading electromagnet, a second slider, a second S-shaped tension and pressure sensor vertically arranged, a radial load disc and a second box body, the radial load disc is fixed on the rotating shaft, an air gap is formed between the radial load disc and the second box body, the second slider is connected with the radial electromagnet mounting bracket in a sliding manner, the radial electromagnet mounting bracket is fixed on the base, one side of the second S-shaped tension and pressure sensor is fixed on the radial electromagnet mounting bracket, the other side of the second S-shaped tension and pressure sensor is fixedly connected with the second slider, the second box body is fixed on the second slider, the radial force loading electromagnet is installed in the second box body, and a second cooling pipe is further arranged in the second box body, the second cooling pipe is connected with the fan, the second S-shaped pull pressure sensor is electrically connected with the data acquisition card, and the electromagnet controller is electrically connected with the radial force loading electromagnet.

Therefore, the second S-shaped tension and pressure sensor is used for detecting the radial load condition of the main body unit of the rotor system experiment table, when the electromagnet controller controls the radial force loading electromagnet to start, the radial force loading electromagnet generates magnetic attraction force in the radial direction to load a radial load disc and transmit the load to the rotating shaft, due to the action of force, the radial force loading electromagnet simultaneously provides thrust for the second sliding block, the second sliding block moves downwards to compress the second S-shaped tension and pressure sensor, and the second S-shaped tension and pressure sensor transmits the detected radial load to the computer through the data acquisition card.

As an optimization, the sensor unit comprises a circular ring-shaped support, two radial displacement sensors, an axial displacement sensor, a rotating speed sensor and an electromagnetic isolation cover, the circular ring-shaped support is fixed on the base through a telescopic rod, the axis of the rotating shaft is overlapped with the axis of the circular ring-shaped support, the two radial displacement sensors are respectively used for detecting the displacement difference of the rotating shaft in the vertical direction and the displacement difference of the rotating shaft in the horizontal direction, a plurality of threaded mounting holes are uniformly distributed on the circular ring-shaped support, the radial displacement sensors are respectively mounted in a vertical mounting hole and a horizontal mounting hole at the top of the circular ring-shaped support, the rotating speed sensor is mounted in the other horizontal mounting hole of the circular ring-shaped support, and the axes of the two radial displacement sensors and the rotating speed sensor are vertical; the axial displacement sensor is installed on the circular ring-shaped support, the axis of the axial displacement sensor is parallel to the axis of the circular ring, and the electromagnetic isolation cover is fixed on the right side of the circular ring-shaped support.

In this way, the displacement sensor is used for detecting the deformation condition of the foil, specifically, the vertical and horizontal radial displacement sensors are used for detecting the displacement of the rotating shaft, the deformation condition of the foil of the radial foil gas bearing is obtained through analysis, and the takeoff rotating speed of the bearing can be detected by adopting a radial displacement response frequency spectrum analysis method according to the collected radial displacement; the axial displacement sensor is used for analyzing the foil deformation condition of the foil thrust bearing; the rotating speed sensor is used for detecting the rotating speed condition of the motor; the electromagnetic isolation cover isolates the sensor from the radial load loading electromagnet at the right end, so that the influence of an external magnetic field on detection data can be prevented; the telescopic link height-adjusting for the axis height-adjustable of ring shape support, sensor mounted position is adjustable, makes this laboratory bench device practicality higher.

The beneficial effects of the utility model reside in that:

1. the utility model discloses an adopt non-contact loading, solved effectively that the high-speed pivot load is difficult to load and the problem that the load is difficult to test in the gas bearing characteristic test, be used for studying the unbalanced response characteristic of foil gas bearing under different medium environment, critical speed characteristic and stability;

2. by utilizing the electromagnetic principle, the load disc is placed in a magnetic field generated by the electromagnet to form electromagnetic force, the working load borne by the bearing under the actual working condition is simulated, the loading effect is good, and the loading range is wide;

3. no friction and small vibration are generated in the loading process, the static load is stable and reliable, and the dynamic load and the frequency are controllable;

4. the utility model discloses a change load and gaseous medium and study foil sheet gas bearing characteristic under different loads and different medium environment.

Drawings

In order to make the purpose, technical scheme and beneficial effect of the utility model clearer, the utility model provides a following figure explains:

fig. 1 is a schematic structural diagram of a foil gas bearing comprehensive experiment table device according to the present invention;

FIG. 2 is a schematic perspective view of FIG. 1;

FIG. 3 is a schematic structural diagram of a main unit of the rotor system experiment table in FIG. 1;

FIG. 4 is a schematic structural view of the axial load loading unit in FIG. 1;

FIG. 5 is a schematic structural view of the radial load loading unit in FIG. 1;

fig. 6 is a schematic diagram of the sensor unit in fig. 1.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "upper, lower, front, rear, left, right" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

As shown in fig. 1 and 2, the utility model provides a foil gas bearing comprehensive experiment table device and experiment method, including: the device comprises an axial load loading unit 01, a radial load loading unit, a rotor system experiment table main body unit 03, a sensor unit 04, a control unit 06, a data acquisition and analysis unit 08, a circulation unit 09 and a base 07.

The rotor system experiment table main body unit 03 is fixed on the base 07 through bolts, the left side and the right side of the rotor system experiment table main body unit are respectively provided with a radial load loading unit, namely a left side radial load loading unit 02 and a right side radial load loading unit 05, the two radial load loading units are identical in structure and working mode, are symmetrically arranged on the left side and the right side of the experiment table main body unit, and are fixed on the base 07 through bolts. The axial load loading unit 01 is positioned at the left end of the left radial load loading unit 02 and is fixed on the base 07. A sensor unit 04 is further installed between the rotor system experiment table main body unit 03 and the right radial load loading unit 05. The device also comprises a control unit 06, a data acquisition and analysis unit 08 and a circulation unit 09, wherein the control unit 06 also comprises an electromagnet controller 06-1 and a motor controller 06-2; the electromagnet controller 06-1 is electrically connected with the axial load loading unit 01 and the radial load loading units 02 and 05, and the motor controller 06-2 is electrically connected with the rotor system experiment table main body unit 03; the data acquisition and analysis unit 08 comprises a computer 08-1 and a data acquisition card 08-2, wherein the data acquisition card is respectively and electrically connected with the axial load loading unit 01, the radial load loading unit, the rotor system experiment table main body unit 03 and the sensor unit 04; the circulating unit 09 comprises a cooling circulating water tank 09-1, a fan 09-2 and a gas medium loader 09-3, the cooling circulating water tank 09-1 is connected with the rotor system experiment table main body unit 03 through a pipeline, the fan 09-2 is connected with the axial load loading unit 01 and the radial load loading unit through pipelines, and the gas medium loader 09-3 is connected with the rotor system experiment table main body unit 03 through a pipeline.

Fig. 3 is a schematic structural view of a rotor system stage main body unit 03 in the present apparatus. The cavity shell 03-4 is fixed on the base 07 through bolts, the left side and the right side of the cavity shell are respectively fixed with a left end cover 03-2 and a right end cover 03-8, the cooling flow channel shell 03-5 is sleeved outside the cavity shell 03-4, and the cavity shell 03-4 and the cooling flow channel shell 03-5 are sealed through a sealing ring 03-6 to prevent cooling water in the cooling flow channel from leaking. A motor is fixed in the cavity shell 03-4, the motor controller 06-2 is electrically connected with the motor, the motor comprises a motor stator 03-15 and a rotor, the motor stator 03-15 is fixed in the cavity shell 03-4, and a radial foil gas bearing a03-18 and a radial foil gas bearing b 03-14 are fixed on the left end cover 03-2 and the right end cover 03-8. The right end cover 03-8 is fixed with a bearing cover 03-9, and the right end cover 03-8 and the bearing cover 03-9 are respectively fixed with a thrust foil thrust bearing 03-10. The rotor comprises a motor permanent magnet 03-16 fixed on a rotating shaft 03-1, and a bearing rotor a 03-17, a bearing rotor b 03-13, a thrust disc 03-12, a left radial load disc 02-1, a right radial load disc 02-1 and an axial load disc 01-5 are also fixedly arranged on the rotating shaft 03-1. The motor permanent magnet 03-16 is matched with the motor stator 03-15, the bearing rotor a 03-17 is matched with the radial foil gas bearing a03-18, the bearing rotor b 03-13 is matched with the radial foil gas bearing b 03-14, and the thrust disc 03-12 is matched with the foil thrust bearing 03-10. An acceleration sensor 03-7 is arranged at the top of the cavity shell 03-4, 6 thermocouple sensors 03-3 are arranged on the radial foil gas bearing, and 4 thermocouple sensors (not marked in the figure) are arranged on the bearing cover 03-9. The mounting interface of the cooling circulation water tank 09-1 is connected with the cooling flow passage interface of the cavity shell 03-4. The mounting interface of the gas medium loader 09-3 is connected with the inlet and outlet holes of the left and right end covers through hoses (the air inlet holes 03-19 are positioned above the side of the bearing cover 03-9). The first sealing ring 03-20 of the left end cover 03-2 and the second sealing ring 03-11 of the bearing cover 03-9 are sealed, so that the leakage of a gas medium is prevented. The left end cover 03-2 and the bearing cover 03-9 are sealed with the rotating shaft 03-1 in a labyrinth sealing mode.

When the motor controller 06-2 controls the motor to start, the motor permanent magnet 03-16 drives the rotating shaft 03-1 to rotate, and the rotating shaft 03-1 drives other parts on the shaft to rotate. The acceleration sensor 03-7 transmits the vibration condition of the experimental device and the temperature change conditions of the radial foil gas bearing a, the radial foil gas bearing b and the bearing cover 03-9 by the thermocouple sensor to the computer 08-1 through the data acquisition card 08-2; the cooling liquid of the cooling circulation water tank 09-1 circulates in the cooling flow channel of the cavity shell 03-4 to dissipate heat of the motor; the gaseous medium in the gaseous medium loader 09-3 circulates in the cavity.

Fig. 4 is a schematic structural diagram of an axial load loading unit 01 in the present apparatus. The axial electromagnet mounting bracket 01-1 is fixed on the base 07 through bolts. The axial electromagnet mounting bracket 01-1 is fixed with one side of a first S-shaped tension and pressure sensor 01-3, the other side of the first S-shaped tension and pressure sensor 01-3 is fixed with a first sliding block 01-2, the first sliding block 01-2 is in sliding fit with the axial electromagnet mounting bracket 01-1, a first box body and a first cooling pipe 01-6 are fixed on the first sliding block 01-2, and an axial force loading electromagnet 01-4 is installed in the first box body. The first box body is of a circular ring shape, the radius of the first box body is the same as that of the axial load disk 01-5, and a certain air gap is formed between the first box body and the axial load disk.

When the electromagnet controller 06-1 controls the axial force loading electromagnet 01-4 to start, the axial force loading electromagnet 01-4 generates an axial magnetic attraction force to load the axial load disc 01-5, and the axial load disc 01-5 transmits the load to the rotating shaft 03-1. Due to the action of force, the axial force loads the electromagnet 01-4 and simultaneously provides thrust for the first sliding block 01-2, the first sliding block 01-2 moves leftwards to compress the first S-shaped tension and pressure sensor 01-3, and the first S-shaped tension and pressure sensor 01-3 transmits the detected load to the computer 08-1 through the data acquisition card 08-2.

Fig. 5 is a schematic structural view of the radial load applying unit 02 or 05 in the present apparatus. The radial electromagnet mounting bracket 02-3 is fixed on the base 07 through bolts. The radial electromagnet mounting support 02-3 is fixed with one side of a second S-shaped tension and pressure sensor 02-4, the other side of the second S-shaped tension and pressure sensor 02-4 is fixed with a second sliding block 02-5, the second sliding block 02-5 is in sliding fit with the radial electromagnet mounting support 02-3, a second box body 02-6 and a second cooling pipe are fixed on the second sliding block 02-5, and a radial force loading electromagnet 02-2 is installed in the second box body 02-6. There is some air gap between the second housing structure and the axial load disk 02-1.

When the electromagnet controller 06-1 controls the radial force loading electromagnet 02-2 to start, the radial force loading electromagnet 02-2 generates a magnetic attraction force in the radial direction, loads the radial load disc 02-1, and transmits the radial load to the rotating shaft 03-1. Due to the action of force, the radial force loads the electromagnet 02-2 and simultaneously provides a thrust force for the second sliding block 02-5, the second sliding block 02-5 moves downwards to the second compression S-type tension and pressure sensor 02-4, and the second S-type tension and pressure sensor 02-4 transmits the detected load to the computer 08-1 through the data acquisition card 08-2.

Fig. 6 is a schematic structural view of the sensor unit 04 in the present apparatus. The sensor unit 04 is positioned between the main body unit 03 and the right 05 radial load loading unit of the rotor system experiment table, the circular ring-shaped support 04-1 is fixed on the base 07, 8 threaded holes are uniformly distributed on a circular ring mounting surface of the circular ring-shaped support 04-1, the axial displacement sensor 04-2 is fixed in the circular ring-shaped support 04-1 through an adapter, and the axis of the axial displacement sensor is parallel to the axis of the rotating shaft 03-1; two radial displacement sensors 04-5 are respectively arranged in the threaded holes in the horizontal direction and the vertical direction, and the axes of the two radial displacement sensors are vertical to and intersected with the axis of the rotating shaft 03-1; the rotation speed sensor is arranged in a threaded hole in the other horizontal direction, and the axis of the rotation speed sensor is vertical to and intersects with the axis of the rotating shaft 03-1. The sensors transmit the detected load size to the computer 08-1 through the data acquisition card 08-2.

The utility model discloses an implementation:

(1) no load test

And starting the cooling circulating water tank 09-1 and the gas medium loader 09-3 to enable cooling liquid to circulate in the cooling water flow channel of the cavity shell 03-4 and enable the gas medium to circulate in the cavity. And starting a data acquisition card 08-2 to acquire data in the thermocouple sensor, the acceleration sensor 03-7, the rotating speed sensor 04-3, the axial displacement sensor 04-2 and the radial displacement sensor 04-5 and transmitting the data to a computer 08-1. The modulating motor controller 06-2 commands the motor to accelerate it to a specified speed. The computer 08-1 is able to display real-time data for each sensor. The thermocouple sensor measures the temperature change condition of each foil bearing, the axial displacement sensor measures the axial displacement of the rotating shaft and the deformation condition of the thrust bearing foil, the radial displacement sensor measures the radial displacement of the rotating shaft and the deformation condition of the radial bearing foil, and the acceleration sensor measures the vibration condition of the device. And adjusting the motor controller 06-2 to acquire characteristic parameters of the air bearing at different rotating speeds.

(2) Axial load testing

And starting the cooling circulating water tank 09-1 and the gas medium loader 09-3 to enable cooling liquid to circulate in the cooling water flow channel of the cavity shell 03-4 and enable the gas medium to circulate in the cavity. And starting the fan 09-2, and introducing cooling air into the axial load loading electromagnet box body. And starting a data acquisition card 08-2 to acquire data of the thermocouple sensor, the acceleration sensor 03-7, the rotating speed sensor 04-3, the axial displacement sensor 04-2, the S-shaped tension and pressure sensor 01-3, the axial displacement sensor 04-2 and the radial displacement sensor 04-5 and transmitting the data to the computer 08-1.

The modulating motor controller 06-2 commands the motor to accelerate it to a specified speed. And (3) the adjusting electromagnet controller 06-1 is electrified to the axial force loading electromagnet 01-4, the current is adjusted to reach the specified load, and the bearing characteristics under the conditions of constant rotating speed and axial load are tested.

The regulating motor controller 06-2 sends an instruction to the motor to change the rotation speed of the motor. And (3) adjusting an electromagnet controller 06-2 to electrify the axial force loading electromagnet 01-4, adjusting the current to control the load, and testing the bearing characteristics at different rotating speeds and different axial loading loads.

(3) Radial load testing

And starting the cooling circulating water tank 09-1 and the gas medium loader 09-3 to enable cooling liquid to circulate in the cooling water flow channel of the cavity shell 03-4 and enable the gas medium to circulate in the cavity. And starting the fan 09-2, and introducing cooling air into the radial load loading electromagnet box body. And starting a data acquisition card 08-2 to acquire data of the thermocouple sensor, the acceleration sensor 03-7, the rotating speed sensor 04-3, the axial displacement sensor 04-2, the S-shaped tension and pressure sensor 02-4, the axial displacement sensor 04-2 and the radial displacement sensor 04-5 and transmitting the data to a computer 08-1.

The modulating motor controller 06-2 commands the motor to accelerate it to a specified speed. And the adjusting electromagnet controller 06-1 is used for electrifying one of the radial force loading electromagnets, adjusting the current to reach the specified load, and testing the bearing characteristics under the conditions of constant rotating speed and unilateral radial load. And the adjusting electromagnet controller 06-2 energizes the two radial force loading electromagnets, adjusts the current to reach the specified load size, and tests the bearing characteristics under the conditions of constant rotating speed and symmetrical radial load.

And adjusting the motor controller 06-2 and the electromagnet controller 06-1, changing the rotating speed of the motor and the current of the two radial force loading electromagnets, and testing the bearing characteristics under different rotating speeds, different radial load loading modes and different radial load sizes.

(4) Integral testing

And starting the cooling circulating water tank 09-1 and the gas medium loader 09-3 to enable cooling liquid to circulate in the cooling water flow channel of the cavity shell 03-4 and enable the gas medium to circulate in the cavity. And starting the fan 09-2, and introducing cooling air into the load loading electromagnet box body. And starting a data acquisition card 08-2 to acquire data of the thermocouple sensor, the acceleration sensor 03-7, the rotating speed sensor 04-3, the axial displacement sensor 04-2, the S-type tension and pressure sensor 01-3, the S-type tension and pressure sensor 02-4, the axial displacement sensor 04-2 and the radial displacement sensor 04-5 and transmitting the data to the computer 08-1.

(5) Variable load test

And adjusting the motor controller 06-2 and the electromagnet controller 06-1, changing the rotating speed of the motor and the current of the axial and radial force loading electromagnet, and testing the bearing characteristics at different rotating speeds and different loads.

(6) Variable media test

The medium type of the gas medium loader 09-3 is changed, the pressure and the flow are adjusted, and the bearing characteristics under different medium types and the pressure and the flow are tested.

It should be noted that the electromagnet controller, the motor controller, and the data acquisition card are all the prior art, and those skilled in the art can obtain the desired technology according to the actual situation, which is not the scope to be protected by the present invention, and therefore, the details are not described herein.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims (8)

1. The utility model provides a foil gas bearing synthesizes laboratory bench device which characterized in that: comprises an axial load loading unit (01), a radial load loading unit, a rotor system experiment table main body unit (03) provided with a foil gas bearing to be tested, a sensor unit (04) and a base (07), the axial load loading unit (01), the radial load loading unit, the rotor system experiment table main body unit (03) and the sensor unit (04) are fixedly connected with the base (07), a rotating shaft (03-1) is arranged through the rotor system experiment table main body unit (03), the rotating shaft (03-1) is rotatably connected with the rotor system experiment table main body unit (03), the load discs of the axial load loading unit (01) and the radial load loading unit are fixedly connected with the rotating shaft (03-1), the sensor unit (04) is located between the radial load loading unit and the rotor system experiment table main body unit (03).

2. The foil gas bearing integrated laboratory bench apparatus of claim 1, wherein: the radial load loading unit comprises a left radial load loading unit (02) and a right radial load loading unit (05), the left radial load loading unit (02) and the right radial load loading unit (05) are symmetrically arranged on two sides of the rotor system experiment table main body unit (03) respectively, and the sensor unit (04) is located between the right radial load loading unit (05) and the rotor system experiment table main body unit (03).

3. The foil gas bearing integrated laboratory bench apparatus of claim 1, wherein: the device is characterized by further comprising a control unit (06), a data acquisition and analysis unit (08) and a circulation unit (09), wherein the control unit (06) comprises an electromagnet controller (06-1) and a motor controller (06-2), the electromagnet controller (06-1) is electrically connected with the axial load loading unit (01) and the radial load loading units (02 and 05), and the motor controller (06-2) is electrically connected with the rotor system experiment table main body unit (03); the data acquisition and analysis unit (08) comprises a computer (08-1) and a data acquisition card (08-2), the computer (08-1) is electrically connected with the data acquisition card (08-2), and the data acquisition card is respectively electrically connected with the axial load loading unit (01), the radial load loading unit, the rotor system experiment table main body unit (03) and the sensor unit (04); the circulating unit (09) comprises a cooling circulating water tank (09-1), a fan (09-2) and a gas medium loader (09-3), the cooling circulating water tank (09-1) is connected with the rotor system experiment table main body unit (03) through a pipeline, the fan (09-2) is connected with the axial load loading unit (01) and the radial load loading unit through pipelines, and the gas medium loader (09-3) is connected with the rotor system experiment table main body unit (03) through a pipeline.

4. A foil gas bearing integrated laboratory bench apparatus according to claim 3, wherein: rotor system laboratory bench main part unit (03) includes cavity shell (03-4), left end lid (03-2), right-hand member lid (03-8), bearing cap (03-9), motor and rotary part, the rotary part cover is established and is fixed on pivot (03-1), cavity shell (03-4) fixed connection be in on base (07), left end lid (03-2) and right-hand member lid (03-8) can be dismantled the connection and be in the both sides of cavity shell (03-4), bearing cap (03-9) can be dismantled the connection and be in on right-hand member lid (03-8), rotary part includes motor permanent magnet (03-16), bearing rotor a (03-17), bearing rotor b (03-13), thrust disc (03-12) and axial load loading unit (01), A load disk of a radial load loading unit, wherein the motor is arranged inside the cavity shell (03-4) and is electrically connected with the motor controller (06-2); the motor comprises a motor stator (03-15) and a rotor, the rotor is a motor permanent magnet (03-16), the motor permanent magnet (03-16) is matched with the motor stator (03-15), a radial foil gas bearing a (03-18) and a radial foil gas bearing b (03-14) are detachably connected to the left end cover (03-2) and the right end cover (03-8) respectively, the radial foil gas bearing a (03-18) and the radial foil gas bearing b (03-14) are matched with the bearing rotor a (03-17) and the bearing rotor b (03-13) respectively, foil thrust bearings (03-10) are fixed on the right end cover (03-8) and the bearing cover (03-9) respectively, and the thrust disc (03-12) is arranged between the two foil thrust bearings (03-10), a first sealing ring (03-20) is arranged between the rotating shaft (03-1) and the left end cover (03-2), a second sealing ring (03-11) is arranged between the rotating shaft (03-1) and the bearing cover (03-9), a cooling flow channel shell (03-5) is fixed on the cavity shell (03-4), a cooling water flow channel is arranged in the cooling flow channel shell (03-5), the cooling water flow channel is spiral around the cavity shell (03-4), an elastic sealing ring (03-6) is arranged between the cooling water flow channel and the cooling flow channel shell (03-5), and the cooling water flow channel is connected with the cooling circulation water tank (09-1); the left end cover (03-2) is provided with an air inlet hole (03-19), the bearing cover (03-9) is provided with an air outlet hole, and the air inlet hole (03-19) and the air outlet hole are respectively connected with the gas medium loader (09-3).

5. The foil gas bearing integrated laboratory bench apparatus of claim 4, wherein: a plurality of thermocouple sensors (03-3) are respectively and uniformly distributed on the peripheral circular surfaces of the radial foil gas bearing a (03-18) and the radial foil gas bearing b (03-14) and the surface of the bearing cover (03-9), an acceleration sensor (03-7) is mounted above the cavity shell (03-4), and the thermocouple sensors (03-3) and the acceleration sensor (03-7) are both connected with the data acquisition card (08-2).

6. The foil gas bearing integrated laboratory bench apparatus of claim 5, wherein: the axial load loading unit (01) comprises an axial electromagnet mounting bracket (01-1), an axial force loading electromagnet (01-4), a first sliding block (01-2), a first S-shaped pull pressure sensor (01-3) horizontally arranged, an axial load disc (01-5) and a first box body, wherein the axial load disc (01-5) is fixed on the rotating shaft, an air gap is formed between the axial load disc (01-5) and the first box body, the first sliding block (01-2) is in sliding connection with the axial electromagnet mounting bracket (01-1), the axial electromagnet mounting bracket (01-1) is fixed on the base (07), one side of the first S-shaped pull pressure sensor (01-3) is fixed on the axial electromagnet mounting bracket (01-1), the other side of the first S-shaped pulling and pressing sensor (01-3) is fixedly connected with the first sliding block (01-2), the first box body is fixed on the first sliding block (01-2), the axial force loading electromagnet (01-4) is installed in the first box body, a first cooling pipe (01-6) is further arranged inside the first box body, the first cooling pipe (01-6) is connected with the fan, the first S-shaped pulling and pressing sensor (01-3) is electrically connected with the data acquisition card (08-2), and the electromagnet controller (06-1) is electrically connected with the axial force loading electromagnet (01-4).

7. The foil gas bearing integrated laboratory bench apparatus of claim 5, wherein: the radial load loading unit comprises a radial electromagnet mounting bracket (02-3), a radial force loading electromagnet (02-2), a second sliding block (02-5), a second S-shaped tension and pressure sensor (02-4) which is vertically arranged, a radial load disc (02-1) and a second box body (02-6), wherein the radial load disc (02-1) is fixed on the rotating shaft, an air gap is formed between the radial load disc (02-1) and the second box body, the second sliding block (02-5) is in sliding connection with the radial electromagnet mounting bracket (02-3), the radial electromagnet mounting bracket (02-3) is fixed on a base (07), one side of the second S-shaped tension and pressure sensor (02-4) is fixed on the radial electromagnet mounting bracket (02-3), the other side of the second S-shaped pull pressure sensor (02-4) is fixedly connected with the second sliding block (02-5), the second box body (02-6) is fixed on the second sliding block, the radial force loading electromagnet (02-2) is installed in the second box body (02-6), a second cooling pipe is further arranged inside the second box body (02-6), the second cooling pipe is connected with the fan (09-2), the second S-shaped pull pressure sensor (02-4) is electrically connected with the data acquisition card (08-2), and the electromagnet controller (06-1) is electrically connected with the radial force loading electromagnet (02-2).

8. The foil gas bearing integrated laboratory bench apparatus of claim 1, wherein: the sensor unit (04) comprises a circular ring-shaped support (04-1), radial displacement sensors (04-5), an axial displacement sensor (04-2), a rotating speed sensor (04-3) and an electromagnetic isolation cover (04-4), the circular ring-shaped support (04-1) is fixed on the base (07) through an expansion link, the axis of the rotating shaft (03-1) is overlapped with the axis of the circular ring-shaped support (04-1), the two radial displacement sensors (04-5) are respectively used for detecting the displacement of the rotating shaft in the vertical direction and the horizontal direction, a plurality of threaded mounting holes are uniformly distributed on the circular ring-shaped support (04-1), the radial displacement sensors (04-5) are respectively mounted in a vertical mounting hole and a horizontal mounting hole at the top of the circular ring-shaped support (04-1), the rotating speed sensor (04-3) is arranged in the other horizontal mounting hole of the circular ring-shaped support (04-1), and the axial lines of the two radial displacement sensors (04-5) and the rotating speed sensor (04-3) are vertical to and intersected with the axial line of the circular ring-shaped support (04-1); the axial displacement sensor (04-2) is installed on the circular ring-shaped support (04-1), the axis of the axial displacement sensor (04-2) is parallel to the axis of the circular ring, and the electromagnetic isolation cover (04-4) is fixed on the right side of the circular ring-shaped support.

Images