CN-122016313-A - Simulated rotor experimental 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, and relates to the field of simulated rotor experimental devices. The cylindrical seat is used for ensuring the coaxiality of the rolling bearing supporting the simulated rotor and the foil gas bearing, and 9 pairs of gas supply holes are formed in the inner surface of the volute, so that the gas flow flows in a specific direction to the blades of the impact turbine, and the simulated rotor is driven to rotate. The oil return tank 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 retainer ring and the comb teeth on the simulation rotor form comb tooth sealing, and meanwhile, the aluminum retainer ring and the comb teeth on the simulation rotor can play a role in protecting the foil gas bearing when the simulation rotor has larger amplitude. The invention supports the simulated rotor by the rolling bearing and the foil gas bearing at the same time, can study the matching degree of the rolling bearing and the foil gas bearing, is beneficial to solving the problem of bearing selection under specific conditions, and expands the application range of the foil gas bearing.

Inventors

• FENG KAI
• PENG BO
• ZHANG ZHEN
• MA WENYI

Assignees

• 湖南大学

Dates

Publication Date

20260512

Application Date

20260415

Claims (5)

1. 1. A simulated rotor experimental device for coupling a rolling bearing and an air bearing is characterized by comprising a cylindrical seat, a simulated rotor, a volute, an impact turbine, an oil return tank body, a foil gas bearing, an aluminum retainer ring, a rolling bearing and a nozzle.
2. 2. The experimental device for the simulated rotor coupling the rolling bearing and the air bearing, which is disclosed in claim 1, is characterized in that the inner hole of the cylindrical seat is formed by one-time processing, the inner hole has higher cylindricity requirement and is used for ensuring the coaxiality of the rolling bearing and the foil gas bearing for supporting the simulated rotor, the cylindrical seat is provided with a threaded hole for installing a displacement sensor, and the displacement sensor is directly installed in the cylindrical seat, so that the accuracy of measuring the displacement of the simulated rotor can be ensured.
3. 3. A simulated rotor experimental device for coupling a rolling bearing and an air bearing as claimed in claim 1, wherein 9 pairs of air supply holes are formed on the inner surface of said scroll so that air flows in a specific direction to the blades of said impulse turbine to drive said simulated rotor to rotate, and said impulse turbine blades are symmetrically distributed with said air supply holes on said scroll to reduce the influence of axial forces on said simulated rotor.
4. 4. A simulated rotor testing device for coupling a rolling bearing and an air bearing as claimed in claim 1 wherein said scavenge tank is adapted to collect used lubricant which is treated by a circulation means and sprayed by a spray nozzle onto the rolling bearing.
5. 5. A simulated rotor experimental device for coupling a rolling bearing and an air bearing as claimed in claim 1, wherein said aluminum retainer ring forms a labyrinth seal with the labyrinth on the simulated rotor and also acts as a protective foil gas bearing in the presence of a greater amplitude on the simulated rotor.

Description

Simulated rotor experimental device for coupling rolling bearing and foil gas bearing Technical Field The invention relates to the field of simulated rotor experimental devices, in particular to a simulated rotor experimental device for coupling a rolling bearing and a foil gas bearing. Background Rolling bearings are a precision mechanical element that changes sliding friction between an operating shaft and a shaft seat into rolling friction, thereby reducing friction losses. The rolling bearing generally comprises four parts, namely an inner ring, an outer ring, rolling bodies and a retainer, wherein the inner ring is matched with the shaft and rotates together with the shaft, and the outer ring is matched with the bearing seat and plays a supporting role. The foil gas bearing is a sliding bearing which utilizes elastic foil to suspend a shaft by hydrodynamic pressure, has the advantages of small friction and no need of a lubricating device, and is widely applied to power equipment. At present, the rolling bearing and the foil gas bearing have advantages and disadvantages respectively, the bearing capacity of the rolling bearing is better than that of the foil gas bearing, and the foil gas bearing has smaller friction and does not need a lubricating device. But existing power plants rarely use both rolling bearings and foil gas bearings. Some application scenarios in the bearing field are urgent to combine rolling bearings and foil gas bearings, which can provide comparable load carrying capacity while reducing lubrication devices. Disclosure of Invention In view of the foregoing drawbacks and deficiencies of the prior art, the present invention provides a simulated rotor testing apparatus for coupling a rolling bearing and a foil gas bearing, which is capable of producing a number of technical effects as described in detail below. In order to achieve the above object, the present invention provides the following technical solutions: the invention provides a simulated rotor experimental device for coupling a rolling bearing and a foil gas bearing, which comprises a cylinder seat, a simulated rotor, a volute, an impact turbine, an oil return tank body, a foil gas bearing, an aluminum retainer ring, a rolling bearing and a nozzle. Preferably, the inner hole of the cylindrical seat is formed by one-time processing, and the inner hole has higher cylindricity requirement. Preferably, the cylinder seat is provided with a threaded hole for installing the displacement sensor. Preferably, the inner surface of the scroll has 9 pairs of air supply holes for allowing air to flow in a specific direction to the blades of the impingement turbine. Preferably, the blades of the impact turbine are distributed symmetrically with the air supply holes on the volute to reduce the influence of axial force on the simulation rotor Preferably, 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. Preferably, the aluminum retainer ring and the comb teeth on the simulation rotor form comb tooth sealing. The invention provides a simulated rotor experimental device for coupling a rolling bearing and a foil gas bearing, which comprises a cylinder seat, a simulated rotor, a volute, an impact turbine, an oil return tank body, a foil gas bearing, an aluminum retainer ring, a rolling bearing and a nozzle. Compared with the prior art, the invention creatively uses the rolling bearing and the foil gas bearing to support the simulated rotor at the same time, and can research the dynamic characteristics of the coupled rolling bearing and foil gas bearing supported simulated rotor. Drawings The above and other features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings. FIG. 1 is a schematic diagram of a simulated rotor experimental apparatus for coupling a rolling bearing and a foil gas bearing in a novel embodiment of the invention; FIG. 2 is a front view of a simulated rotor experimental setup coupling a rolling bearing and a foil gas bearing in a novel embodiment of the invention; FIG. 3 is a top view of a simulated rotor experimental setup coupling a rolling bearing and a foil gas bearing in a novel embodiment of the invention; FIG. 4 is a cross-sectional view of a simulated rotor experimental apparatus coupling a rolling bearing and a foil gas bearing in a novel embodiment of the invention; In fig. 1-4, 1, a cylindrical seat, 2, a simulation rotor, 3, a volute, 4, an impact turbine, 5, an oil return box body, 6, a foil gas bearing, 7, an aluminum retainer ring, 8, a rolling bearing, 9 and a nozzle. Detailed Description In order to more clearly illustrate the objects, technical solutions and advantages of the present invention, the technical solutions of the present invention will be describe