Rotor simulation experiment device for coupling rolling bearing and foil gas bearing

Abstract

The invention discloses a simulated rotor experimental device for coupling a rolling bearing and a foil gas bearing, which relates to the field of simulated rotor experimental devices and comprises a cylindrical seat, a simulated rotor, a volute, an impact turbine, an oil return tank body, the foil gas bearing, an aluminum retainer ring, the rolling bearing and a nozzle. The cylindrical seat is used for guaranteeing the coaxiality of a rolling bearing supporting the simulation rotor and a foil gas bearing, and nine pairs of gas supply holes are formed in the inner surface of the volute, so that airflow flows to impact blades of a turbine in a specific direction, and the simulation rotor is driven to rotate. The oil return box body is used for collecting used lubricating oil, and the lubricating oil is sprayed to the rolling bearing through the nozzle after being treated by the circulating device. The aluminum check ring and the labyrinth on the simulation rotor form labyrinth seal, and meanwhile, the aluminum check ring can play a role in protecting the foil gas bearing when the simulation rotor has large amplitude. The simulation rotor is supported by the rolling bearing and the foil gas bearing at the same time, the matching degree of the rolling bearing and the foil gas bearing can be researched, the problem of bearing selection under specific conditions can be solved, and the application range of the foil gas bearing is expanded.

Description

Technical Field

[0001] This invention relates to the field of simulated rotor experimental apparatus, and more particularly to a simulated rotor experimental apparatus that couples a rolling bearing and a foil gas bearing. Background Technology

[0002] Rolling bearings are precision mechanical components that convert the sliding friction between a rotating shaft and its housing into rolling friction, thereby reducing frictional losses. A rolling bearing generally consists of four parts: an inner ring, an outer ring, rolling elements, and a cage. The inner ring mates with the shaft and rotates with it; the outer ring mates with the bearing housing and provides support. Foil gas bearings are sliding bearings that use elastic foils to suspend the shaft by hydrodynamic pressure. Their advantages include low friction and no need for lubrication, making them widely used in power equipment.

[0003] Currently, rolling bearings and foil gas bearings each have their advantages and disadvantages. Rolling bearings have a higher load-carrying capacity than foil gas bearings, while foil gas bearings have less friction and require no lubrication. However, existing power equipment rarely uses both rolling bearings and foil gas bearings simultaneously. Some applications in the bearing field urgently require a combination of rolling bearings and foil gas bearings to provide comparable load-carrying capacity while reducing the need for lubrication. Summary of the Invention

[0004] To address the deficiencies and shortcomings in the aforementioned background technology, this invention provides a simulated rotor experimental device that couples a rolling bearing and a foil gas bearing. The numerous technical effects of this invention are detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The present invention provides a simulated rotor experimental device for coupling rolling bearings and foil gas bearings, comprising a cylindrical base, a simulated rotor, a volute, an impact turbine, an oil return tank, a foil gas bearing, an aluminum retaining ring, a rolling bearing, and a nozzle.

[0007] Preferably, the inner hole of the cylindrical seat is machined in one operation, and the inner hole has a high requirement for cylindricity.

[0008] Preferably, the cylindrical base is provided with a threaded hole for mounting a displacement sensor.

[0009] Preferably, the inner surface of the vortex casing has nine pairs of air supply holes, which allow the airflow to flow in a specific direction toward the blades of the impact turbine.

[0010] Preferably, the blades of the impact turbine and the air supply holes on the volute are symmetrically distributed to reduce the influence of axial force on the simulated rotor.

[0011] Preferably, the oil return tank is used to collect used lubricating oil, which is then processed by a circulation device and sprayed onto the rolling bearing through a nozzle.

[0012] Preferably, the aluminum retaining ring forms a tooth seal with the teeth on the simulated rotor.

[0013] This invention provides a simulated rotor experimental apparatus using coupled rolling bearings and foil gas bearings, comprising a cylindrical base, a simulated rotor, a volute casing, an impact turbine, an oil return tank, foil gas bearings, an aluminum retaining ring, rolling bearings, and a nozzle. Compared with existing technologies, this invention innovatively uses both rolling bearings and foil gas bearings to simultaneously support the simulated rotor, enabling the study of the dynamic characteristics of a simulated rotor supported by coupled rolling bearings and foil gas bearings. Attached Figure Description

[0014] The above and other features and advantages of the present invention will become clearer from the following detailed description in conjunction with the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the structure of the simulated rotor experimental device for coupling rolling bearings and foil gas bearings in a novel embodiment of the present invention; Figure 2 This is a front view of the simulated rotor experimental apparatus for coupling rolling bearings and foil gas bearings in a novel embodiment of the present invention; Figure 3 This is a top view of the simulated rotor experimental apparatus for coupling rolling bearings and foil gas bearings in a novel embodiment of the present invention; Figure 4 This is a cross-sectional view of the simulated rotor experimental apparatus for coupling rolling bearings and foil gas bearings in a novel embodiment of the present invention; Figure 1 — Figure 4 In the middle: 1. Cylindrical seat; 2. Simulated rotor; 3. Volute casing; 4. Impact turbine; 5. Oil return tank; 6. Foil gas bearing; 7. Aluminum retaining ring; 8. Rolling bearing; 9. Nozzle. Detailed Implementation

[0016] To more clearly illustrate the objectives, technical solutions, and advantages of this invention, the technical solutions of the invention will be described in detail below. It should be noted that the described embodiments represent only some embodiments of the invention, and not all embodiments. Based on different embodiments of the invention, those skilled in the art can obtain various other implementation methods without creative work, and these methods all fall within the protection scope of this invention.

[0017] The purpose of this specific embodiment is to provide a simulated rotor experimental device that couples rolling bearings and foil gas bearings, with the aim of studying the dynamic characteristics of a simulated rotor supported by coupled rolling bearings and foil gas bearings.

[0018] The embodiments are explained in detail below with reference to the accompanying drawings. It should be emphasized that the embodiments listed below do not limit the scope of the invention as described in the claims. Furthermore, the content covered by the embodiments below is not limited to the solutions of the invention as stated in the claims.

[0019] like Figures 1 to 4 As shown, this embodiment provides a simulated rotor experimental device that couples rolling bearings and foil gas bearings, including a cylindrical seat (1), a simulated rotor (2), a volute (3), an impact turbine (4), an oil return tank (5), a foil gas bearing (6), an aluminum retaining ring (7), a rolling bearing (8), and a nozzle (9).

[0020] In this configuration, the cylindrical base ensures the coaxiality of the rolling bearings and foil gas bearings supporting the simulated rotor, the vortex housing directs the airflow in a specific direction toward the turbine blades, thereby driving the simulated rotor to rotate; the return oil tank collects the used lubricating oil, which is then processed by a circulation device and sprayed onto the rolling bearings through nozzles; the aluminum retaining ring forms a grate seal with the grates on the simulated rotor, and also protects the foil gas bearings when the simulated rotor experiences large amplitude vibrations.

[0021] Traditional power units typically use either rolling bearings or foil gas bearings, rarely employing both simultaneously. However, this invention provides a novel technical solution in which a simulated rotor experimental apparatus coupling rolling bearings and foil gas bearings is used. This solution allows for the study of the dynamic characteristics of a simulated rotor supported by coupled rolling bearings and foil gas bearings, and expands the applicability of foil gas bearings.

[0022] Specifically, the cylindrical seat (1), volute (3), return oil tank (5), foil gas bearing (6), and aluminum retaining ring (7) are rigidly connected together. The impact turbine (4) is installed on the simulated rotor (2) and drives the simulated rotor (2) through the gas ejected from the volute (3).

[0023] Furthermore, the nozzle (9) is mounted on the cylindrical seat (1), and the nozzle sprays lubricating oil onto the rolling bearing (8). The lubricating oil is collected by the return oil tank (5) and flows back to the nozzle (9) through the circulation system.

[0024] In addition, the foil gas bearing (6) and the rolling bearing (8) are rigidly connected to the cylindrical seat (1) through corresponding bearing housings to support the rotation of the simulated rotor (2). The cylindricity of the inner surface of the cylindrical seat (1) ensures the coaxiality of the foil gas bearing (6) and the rolling bearing (8).

[0025] The foregoing paragraphs illustrate the mutual reference and complementarity between different embodiments. Similarities or identical parts may exist between the embodiments, and content not described in detail in some embodiments can be found in others. The multiple solutions provided by this invention are independent of each other and do not restrict one another, but they can also be combined without conflict to achieve multiple effects.

[0026] The description of the disclosed embodiments enables those skilled in the art to practice or apply the novel invention. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the novel invention. Therefore, the novel invention is not limited to the embodiments shown herein, but is limited to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A simulated rotor experimental apparatus for coupling rolling bearings and air bearings, characterized in that, It includes: cylindrical base, simulated rotor, volute, impact turbine, return oil tank, foil gas bearing, aluminum retaining ring, rolling bearing, and nozzle.

2. The simulated rotor experimental apparatus for coupling rolling bearings and air bearings according to claim 1, characterized in that, The inner hole of the cylindrical seat is machined in one go, and the inner hole has a high cylindricity requirement to ensure the coaxiality of the rolling bearing and foil gas bearing supporting the simulated rotor; the cylindrical seat is provided with threaded holes for installing displacement sensors, and the displacement sensors are directly installed in the cylindrical seat to ensure the accuracy of measuring the displacement of the simulated rotor.

3. The simulated rotor experimental apparatus for coupling rolling bearings and air bearings according to claim 1, characterized in that, The inner surface of the vortex housing has nine pairs of air supply holes, which allow airflow to flow in a specific direction to the blades of the impact turbine, thereby driving the simulated rotor to rotate. The blades of the impact turbine and the air supply holes on the vortex housing are symmetrically distributed to reduce the influence of axial force on the simulated rotor.

4. The simulated rotor experimental apparatus for coupling rolling bearings and air bearings as described in claim 1, characterized in that, The oil return tank is used to collect used lubricating oil, which is then processed by a circulation device and sprayed onto the rolling bearing through a nozzle.

5. The simulated rotor experimental apparatus for coupling rolling bearings and air bearings as described in claim 1, characterized in that, The aluminum retaining ring forms a grate seal with the grates on the simulated rotor, and at the same time, it can protect the foil gas bearing when the simulated rotor experiences large amplitude vibrations.

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