Thrust air bearing testing device for air suspension centrifugal fan
By designing an air suspension centrifugal fan thrust air bearing test device and using linear motors and sensors to simulate the bearing working environment, the problems of low detection efficiency and component wear were solved, and efficient and accurate detection and performance assurance were achieved.
Patent Information
- Application Number
- CN202422858128.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-11-22
AI Technical Summary
In the existing technology, the inspection efficiency of thrust air bearings is low, and the entire equipment needs to be frequently disassembled, resulting in severe wear of parts and high costs, and the product performance cannot be guaranteed.
A test device for thrust air bearings of air-suspended centrifugal fans was designed, which included a test bench, thrust plates, a test host, and test fixtures. A linear motor and a pressure detection device were used to simulate the working environment of the bearings to achieve precise control and positioning. A frequency converter and a water-cooling unit were equipped to simulate different working conditions, and temperature, pressure, and vibration sensors were used for real-time monitoring.
The detection efficiency of thrust air bearings is improved, frequent disassembly of the entire equipment is avoided, verification costs are reduced, and the stability and accuracy of product performance are guaranteed.
Smart Images
Figure CN223332634U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of mechanical equipment, in particular to a thrust air bearing testing device for an air-suspended centrifugal fan. Background Art
[0002] Thrust air bearings are important components of air suspension fans. Since a fan is a device that transports gas, the magnitude and direction of the axial force acting on the rotor will change during rotation, so the rotor will inevitably move forward or backward. At this time, a thrust air bearing needs to be arranged in the rotor system to bear the forward or backward force of the rotor. The force and working state of the thrust air bearing will be directly affected by the terminal equipment, so the role of the thrust air bearing is crucial.
[0003] The thrust air bearing components are highly precise and the assembly test is complex. The entire machine must be assembled and powered on for a test run before test data can be obtained to determine whether the product is qualified. When manufacturing large quantities of products, if you want to determine whether the product is qualified, you need to frequently disassemble and assemble the entire machine just to test a single component. The test efficiency is extremely low, the test labor cost is high, and the frequent disassembly and assembly of the entire machine causes serious wear of other components, affecting the accuracy of the components and making it impossible to guarantee the overall performance of the product. This needs to be improved. Utility Model Content
[0004] The purpose of the utility model is to provide an air suspension centrifugal fan thrust air bearing test device that can simulate the working environment of the thrust air bearing and avoid frequent disassembly and assembly of the entire equipment in order to solve the above problems.
[0005] In order to achieve the above-mentioned purpose, the utility model discloses a test device for a thrust air bearing of an air-suspended centrifugal fan, comprising a test stand and a thrust plate that can match the thrust air bearing. A test host for driving the thrust plate to rotate is installed on the test stand, and the thrust plate is installed on the test host. A test tooling for pushing the thrust air bearing toward the thrust plate is installed on the test stand.
[0006] The test device can simulate the actual working environment of the thrust air bearing of an air-suspended centrifugal fan, providing the necessary hardware support for testing, thereby effectively improving the efficiency of thrust air bearing detection and verification, avoiding frequent disassembly and assembly of the entire equipment, and avoiding wear of other components caused by frequent disassembly and assembly of the entire equipment, thereby reducing verification costs while ensuring the overall performance of the product.
[0007] The test fixture consists of a base with a slidably mounted, laterally movable feed block. A thrust air bearing is mounted on the feed block, and a linear motor is mounted on the base to drive the lateral movement of the feed block. The slidably mounted feed block and linear motor enable precise control and positioning of the thrust air bearing, improving test accuracy while also making the testing process more flexible and controllable.
[0008] A pressure sensing device is installed at the rear end of the feed base to detect the thrust of the linear motor. A guide block is installed between the rear end of the pressure sensing device and the output end of the linear motor. The guide block slides within a guide channel provided in the base, with a spring positioned between the two guide blocks. The pressure sensing device can utilize a pressure sensor to monitor the thrust of the linear motor in real time as it pushes the feed base, allowing for a more accurate assessment of the load capacity and durability of the thrust air bearing. The spring acts as a buffer, preventing damage to the equipment from collisions between the thrust air bearing and the thrust plate.
[0009] The test bench is equipped with a digital display device for displaying the pressure test device's test values. This device, a screen electrically connected to the pressure test device, allows for a visual display of thrust values during testing, facilitating real-time monitoring and recording by operators. This improves test efficiency and accuracy, while also facilitating subsequent data analysis and processing.
[0010] A positioning plate is located on the end of the feed block facing the tester, onto which the thrust air bearing is mounted. Bolts are installed on the positioning plate, passing through the thrust air bearing and threaded into the positioning plate. The positioning plate ensures the stability and reliability of the thrust air bearing during installation, thereby improving test accuracy.
[0011] The test host includes a housing housing a motor stator, which houses a rotor that drives the thrust plate. Both ends of the rotor protrude from the housing. Thrust plates are mounted on both ends of the stator. Test fixtures for the thrust plates are located on both sides of the test host. The test host can simulate the operating conditions of a rotating thrust air bearing and can also test two sets of thrust air bearings simultaneously.
[0012] The test bench is equipped with a frequency converter for controlling the main engine rotor speed. The frequency converter allows the operator to adjust the main engine rotor speed as needed, which improves the flexibility of the test and helps simulate test conditions under different working conditions.
[0013] The test bench is equipped with a water cooling unit for cooling the test host. The water cooling unit helps maintain the stability and reliability of the test host during long-term operation, avoiding equipment damage or test errors caused by overheating.
[0014] It also includes a temperature detection device for detecting the surface temperature of the thrust air bearing. When the equipment starts to run, the water cooling unit is used to cool the test host, and the frequency converter is used to adjust the host speed to simulate the rotor operation state. During the stable operation of the host rotor, the surface temperature of the thrust air bearing is tested in multiple required time periods. The test area and position need to be consistent. After the temperature reaches a certain limit, it no longer rises but decreases until it stabilizes and is qualified. After determining that the product is preliminarily qualified, stop the test host from rotating, wait for the thrust air bearing to cool down, then take it out, clean the bearing surface, and check the wear condition of the radial bearing inner cavity. It is a qualified product if it meets the technical requirements.
[0015] It also includes temperature sensors, pressure sensors, and vibration sensors for detecting the temperature, pressure, and vibration parameters of the equipment during operation. The sensors can detect various parameters during equipment operation and promptly inform staff of the equipment's operating status.
[0016] To sum up, the beneficial effects of the present invention are that the testing device can simulate the actual working environment of the thrust air bearing of an air-suspended centrifugal fan, providing the necessary hardware support for the test, thereby effectively improving the efficiency of thrust air bearing detection and verification, avoiding frequent disassembly and assembly of the entire equipment, and avoiding wear of other parts caused by frequent disassembly and assembly of the entire machine, thereby reducing verification costs while ensuring the overall performance of the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural diagram of the utility model;
[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the test fixture and the test host;
[0019] Figure 3 for Figure 2 A schematic diagram of the partially enlarged structure of point A;
[0020] Figure 4 Schematic diagram of the axial structure of the test fixture and test host.
[0021] In the figure: linear motor 1, test bench 2, test fixture 3, test host 4, frequency converter 5, water cooling unit 6, digital display device 7, pressure detection device 8, thrust air bearing 9, thrust plate 10, host rotor 11, motor stator 12, housing 13, base 14, feed seat 15, bolt 16, positioning plate 17, spring 18, guide channel 19, guide block 20. DETAILED DESCRIPTION
[0022] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0023] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.
[0024] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.
[0025] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.
[0026] The following is a description of preferred embodiments of the present invention with reference to the accompanying drawings.
[0027] A thrust air bearing test device for an air-suspended centrifugal fan mainly comprises a test stand 2, a thrust plate 10, a test host 4, and a test fixture 3. The thrust plate 10 matches the thrust air bearing 9, is mounted on the test host 4, and is driven to rotate by the test host 4. The test fixture 3 is responsible for pushing the thrust air bearing 9 toward the thrust plate 10 to simulate the actual working state. The specific structure of the test fixture 3 includes a base 14, a feed seat 15, and a linear motor 1. The feed seat 15 is slidably mounted on the base 14 and can move laterally. The thrust air bearing 9 is mounted on the feed seat 15. The linear motor 1 drives the feed seat 15 to move, achieving precise control and positioning of the thrust air bearing 9. In addition, the test fixture 3 is also equipped with a pressure detection device 8, located between the linear motor 1 and the feed seat 15, which monitors the thrust value of the linear motor 1 in real time and evaluates the load-bearing capacity and durability of the thrust air bearing 9.
[0028] Refer to the attached Figure 1 The test stand 2 is also equipped with a digital display device 7 for displaying the detection value of the pressure detection device 8, allowing the operator to monitor and record test data in real time. A positioning plate 17 is installed on the end of the feed base 15 facing the test host 4 to ensure the stability and reliability of the thrust air bearing 9 during installation.
[0029] Refer to the attached Figure 2 The test host 4 comprises a housing 13, a motor stator 12, and a host rotor 11. The host rotor 11, mounted within the motor stator 12, drives the thrust plate 10 to rotate, simulating the operation of the thrust air bearing 9 in a rotating state. Thrust plates 10 and matching test fixtures 3 are installed on both sides of the test host 4, enabling simultaneous testing of two sets of thrust air bearings 9.
[0030] Refer to the attached Figure 1 In addition, a frequency converter 5 is installed on the test bench 2 to control the operating speed of the main engine rotor 11, thereby improving the flexibility of the test. A water cooling unit 6 is used to cool the test main engine 4 to maintain its stability and reliability during long-term operation.
[0031] The test device is also equipped with a temperature detection device for monitoring the surface temperature of the thrust air bearing 9. During testing, various operating conditions are simulated by using a water-cooling unit 6 to reduce the temperature and a variable frequency controller 5 to adjust the speed. The surface temperature of the thrust air bearing 9 is measured over multiple time periods to determine whether its performance meets the requirements. To comprehensively monitor the equipment's operating status, the test device is also equipped with temperature, pressure, and vibration sensors, providing real-time monitoring of temperature, pressure, and vibration parameters during operation, ensuring test accuracy and safety.
[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.
Claims
1. A thrust bearing test device for an air-suspended centrifugal fan, comprising a test stand (2), characterized in that: It also includes a thrust plate (10) that can match the thrust air bearing (9), a test host (4) for driving the thrust plate (10) to rotate is installed on the bench (2), the thrust plate (10) is installed on the test host (4), and a test fixture (3) for pushing the thrust air bearing (9) toward the thrust plate (10) is installed on the bench (2).
2. The air suspension centrifugal fan thrust air bearing test device according to claim 1, characterized in that: The test fixture (3) includes a base (14), a feed seat (15) capable of lateral movement is slidably mounted on the base (14), a thrust air bearing (9) is mounted on the feed seat (15), and a linear motor (1) is mounted on the base (14) for driving the feed seat (15) to lateral movement.
3. The air suspension centrifugal fan thrust air bearing test device according to claim 2, characterized in that: A pressure detection device (8) for detecting the thrust value of the linear motor (1) is installed at the rear end of the feed seat (15), and a guide block (20) is installed at the rear end of the pressure detection device (8) and the output end of the linear motor (1). A guide channel (19) is provided in the base (14), and the guide block (20) is slidably installed in the guide channel (19). A spring (18) is provided between the two guide blocks (20).
4. The air suspension centrifugal fan thrust air bearing test device according to claim 3, characterized in that: A digital display device (7) for displaying the detection value of the pressure detection device (8) is installed on the platform (2).
5. The air suspension centrifugal fan thrust air bearing test device according to claim 2, characterized in that: A positioning plate (17) is provided at one end of the feed seat (15) facing the test host (4), the thrust air bearing (9) is mounted on the positioning plate (17), and a bolt (16) is mounted on the positioning plate (17) and passes through the thrust air bearing (9) and is screwed into the positioning plate (17).
6. The air suspension centrifugal fan thrust air bearing test device according to claim 1, characterized in that: The test host (4) includes a housing (13), a motor stator (12) is installed in the housing (13), a host rotor (11) for driving the push plate (10) to rotate is installed in the motor stator (12), the left and right ends of the host rotor (11) both protrude from the housing (13), the left and right ends of the motor stator (12) are both installed with push plates (10), and the left and right sides of the test host (4) are both provided with test fixtures (3) for cooperating with the push plates (10).
7. The air suspension centrifugal fan thrust air bearing test device according to claim 6, characterized in that: A frequency conversion controller (5) for controlling the operating speed of the main engine rotor (11) is installed on the stand (2).
8. The air suspension centrifugal fan thrust air bearing test device according to claim 1, characterized in that: A water cooling unit (6) for cooling the test host (4) is installed on the bench (2).
9. The air suspension centrifugal fan thrust air bearing test device according to claim 1, characterized in that: It also includes a temperature detection device for detecting the surface temperature of the thrust air bearing (9).
10. The air suspension centrifugal fan thrust air bearing testing device according to claim 1, characterized in that: It also includes a temperature sensor, a pressure sensor and a vibration sensor for detecting the temperature, pressure and vibration parameters of the device when the device is running.