Rotor power vibration reduction and isolation device with rubber silicone oil rings and magnetorheological elastomers

Abstract

The invention relates to the technical field of vibration reduction and isolation, in particular to a rotor power vibration reduction and isolation device with a rubber silicone oil ring and a magnetorheological elastomer, and aims to solve the problem that initial rigidity supporting and vibration reduction of the vibration reduction and isolation device are difficult to maintain under the condition that a magnet exciting coil has no magnetic field intensity. The design comprises a three-circular-ring mouse cage device, a rubber silicone oil ring device is arranged inside the three-circular-ring mouse cage device, a magnetic assembly is arranged outside the three-circular-ring mouse cage device, and the rubber silicone oil ring device and the magnetic assembly are fixedly installed through the three-circular-ring mouse cage device. The viscoelasticity and the silicone oil flow characteristic of the rubber silicone oil ring and the magnetostriction of the magnetorheological elastomer are combined, multi-mechanism synergistic efficient vibration energy dissipation is innovatively achieved, the adaptive capacity to broadband vibration is remarkably enhanced through the design, the vibration reduction and isolation effect is optimized by dynamically adjusting the rigidity and damping of the system, and the vibration reduction and isolation efficiency is improved. The problem that adaptability is insufficient under the complex vibration working condition in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of vibration reduction and isolation technology, specifically to a rotor dynamic vibration reduction and isolation device using a rubber silicone oil ring and a magnetorheological elastomer. Background Technology

[0002] Vibration reduction and isolation technology is widely used in mechanical rotor systems, but most existing technologies use rubber, magnetorheological elastomers, or silicone oil as core components, resulting in insufficient multi-frequency vibration control capabilities, difficulty in absorbing both high-frequency and low-frequency vibrations, and inability to meet the needs of complex vibration sources. Rubber aging, silicone oil leakage, and the dependence of magnetorheological elastomers on external control systems limit the service life and stability of the equipment. In addition, magnetorheological elastomer systems require complex control devices, which increases design difficulty and economic costs, affecting the promotion of practical applications.

[0003] In order to overcome the inability of existing active and passive vibration control technologies to effectively suppress broadband low-frequency linear spectrum vibration of rotor systems, this invention provides a vibration damper / isolation device. This vibration damper / isolation device can not only realize automatic frequency adjustment, vibration energy dissipation and isolation of the system, but also achieve the initial stiffness support and vibration reduction function of the vibration damper / isolation device even when the excitation coil has no magnetic field strength. Summary of the Invention

[0004] The purpose of this invention is to provide a rotor dynamic vibration damping and isolation device using a rubber silicone oil ring and a magnetorheological elastomer, in order to solve the problem in the prior art that it is difficult to maintain the initial stiffness support and vibration damping effect of the vibration damper when the excitation coil has no magnetic field strength.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rotor dynamic vibration reduction and isolation device using a rubber silicone oil ring and a magnetorheological elastomer, comprising a three-ring squirrel cage device, wherein the rubber silicone oil ring device is disposed inside the three-ring squirrel cage device, and a magnetic component is disposed outside the three-ring squirrel cage device. The rubber silicone oil ring device and the magnetic component are fixedly installed through the three-ring squirrel cage device. The three-ring squirrel cage device includes an outer ring layer, a supporting ring layer and an inner ring layer, and a flange is fixedly installed on the back of the outer ring layer, the supporting ring layer and the inner ring layer.

[0006] Preferably, the rubber silicone oil ring device includes two rubber cavities respectively installed between the outer ring layer, the supporting ring layer and the inner ring layer, and each rubber cavity is filled with silicone oil.

[0007] Preferably, the magnetic component includes an excitation coil housing, an excitation coil is disposed inside the excitation coil housing, a magnetorheological elastomer is disposed inside the excitation coil, and a magnetic isolation ring is disposed inside the magnetorheological elastomer.

[0008] Preferably, a bearing is fixedly installed on the inner wall of the supporting annular layer, and a journal is rotatably installed inside the bearing.

[0009] Preferably, the outer surface of the outer ring layer, the supporting ring layer and the inner ring layer are each provided with a set of rectangular through holes, and the left side of the outer surface of the flange is provided with two sets of bolt holes.

[0010] Preferably, a sealing ring is snapped onto the inner wall of the supporting annular layer.

[0011] Compared with the prior art, the beneficial effects of the present invention are: by combining the viscoelasticity of the rubber silicone oil ring and the flow characteristics of silicone oil, as well as the magnetoviscoelasticity of the magnetorheological elastomer, the invention innovatively achieves efficient vibration energy dissipation through multi-mechanism synergy. This design significantly enhances the adaptability to broadband vibrations and optimizes the vibration reduction and isolation effect by dynamically adjusting the stiffness and damping of the system, thus overcoming the problem of insufficient adaptability of the prior art under complex vibration conditions.

[0012] The device employs a three-ring squirrel cage design with an optimized rectangular through-hole structure. This design enhances flexibility and vibration reduction performance while ensuring sufficient support strength, avoiding the risk of failure due to insufficient strength in traditional devices. The magnetic isolation ring design effectively prevents magnetic field leakage, ensuring the stability of magnetic control adjustment and further improving the reliability of the vibration damper.

[0013] By dynamically adjusting the elastic modulus and damping coefficient of the magnetorheological elastomer through the excitation coil, the system can accurately track changes in vibration conditions and adjust the natural frequency in real time, thereby significantly improving the dynamic response performance of the vibration damper. By changing the filling rate and type of silicone oil in the inner cavity of the rubber silicone oil ring, the system's flexibility in adapting to different working conditions is further enhanced, demonstrating intelligent control and flexible adaptability.

[0014] The passive vibration reduction and isolation capability of the rubber silicone oil ring can provide basic vibration reduction effect under the condition of no magnetic field, ensuring the initial vibration reduction and isolation performance of the system. The rapid response characteristics of the magnetorheological elastomer further optimize the vibration reduction effect under the condition of magnetic field. This integration of passive and active vibration reduction functions not only improves the operating efficiency and safety margin of the system, but also expands its reliable working range under various working conditions. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a partial cross-sectional view of the present invention; Figure 2 This is a schematic diagram of the disassembled structure of the present invention; Figure 3 This is a three-dimensional structural schematic diagram of the side sectional view of the present invention; Figure 4 This is a three-dimensional structural diagram of the three-ring rat cage device of the present invention.

[0017] The attached diagram lists the components represented by each number as follows: 1. Three-ring squirrel cage device; 101. Outer ring layer; 102. Supporting ring layer; 103. Inner ring layer; 104. Flange; 105. Rectangular through hole; 106. Bolt hole; 2. Excitation coil; 3. Magnetorheological elastomer; 4. Bearing; 5. Magnetic isolation ring; 6. Journal; 7. Sealing ring; 8. Excitation coil housing; 9. Silicone oil; 10. Rubber cavity. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1 to 4 This invention provides a technical solution: a rotor dynamic vibration reduction and isolation device using a rubber silicone oil ring and a magnetorheological elastomer, comprising a three-ring squirrel cage device 1. The three-ring squirrel cage device 1 has a rubber silicone oil ring device inside and a magnetic component on its outside. The rubber silicone oil ring device and the magnetic component are fixedly installed via the three-ring squirrel cage device 1. The three-ring squirrel cage device 1 includes an outer ring layer 101, a supporting ring layer 102, and an inner ring layer 103. A flange 104 is fixedly installed on the back of the outer ring layer 101, the supporting ring layer 102, and the inner ring layer 103. The three-ring squirrel cage device 1 is used for the rotor journal 6 to connect with the rubber silicone oil ring device and the magnetic component. The inner bearing end of the supporting ring layer 102 of the three-ring squirrel cage device 1 is connected to the outer ring of the rotor bearing 4. The outer layer of the supporting ring layer 102 of the three-ring squirrel cage device 1 is connected to the magnetorheological elastomer 3 via the magnetic isolation ring 5. The load of the rotor journal 6 is transferred to the rubber silicone oil ring device and the magnetic assembly through the bearing end of the supporting ring layer 102 of the three-ring squirrel cage device 1. The other end of the three-ring squirrel cage device 1 is designed as a flange 104, which is cantilevered to the rotor system casing by bolts. Two rubber cavities 10 and silicone oil 9 of different diameters are respectively installed between the supporting ring layer 102 and the outer ring layer 101 and between the supporting ring layer 102 and the inner ring layer 103.

[0020] Please see Figure 2The rubber silicone oil ring device includes two rubber cavities 10 respectively installed between the outer ring layer 101, the supporting ring layer 102 and the inner ring layer 103. Each rubber cavity 10 is filled with silicone oil 9, and the silicone oil 9 filling rate inside the rubber cavity 10 is ≤70%.

[0021] Please see Figure 2 The magnetic component includes an excitation coil housing 8, an excitation coil 2 inside the excitation coil housing 8, a magnetorheological elastomer 3 inside the excitation coil 2, and a magnetic isolation ring 5 inside the magnetorheological elastomer 3. The excitation coil 2 is wound around the surface of a circular magnet at equal intervals, and the excitation coil housing 8 and the magnetic isolation ring 5 form a closed magnetic field.

[0022] Please see Figure 1 A bearing 4 is fixedly installed on the inner wall of the supporting annular layer 102, and a journal 6 is rotatably installed inside the bearing 4.

[0023] Please see Figure 4 The outer ring layer 101, the supporting ring layer 102 and the inner ring layer 103 are all provided with a set of rectangular through holes 105, and the outer surface of the flange 104 is provided with two sets of bolt holes 106 on the left side.

[0024] Please see Figure 3 The inner wall of the supporting annular layer 102 is fitted with a sealing ring 7, which can prevent foreign objects from entering.

[0025] The implementation principle of the rotor dynamic vibration reduction and isolation device using a rubber silicone oil ring and a magnetorheological elastomer in this application embodiment is as follows: The three-ring squirrel cage device 1 receives the vibration of the rotor system shaft diameter, tracks the vibration frequency of the rotor system shaft diameter, and adjusts the magnetostrictive modulus of the magnetorheological elastomer 3 by adjusting the current through the excitation coil 2 according to the frequency of the external vibration of the rotor system, thereby adjusting the stiffness parameters of the magnetic components; then it vibrates together with the three-ring squirrel cage device 1, and transmits the vibration amplitude to the rubber cavity 10 and silicone oil 9 for vibration reduction and isolation. When the rotor journal 6 vibrates, the magnetorheological elastomer 3 connected to the three-ring squirrel cage device 1 is in a compressed working state. Under the current adjustment of the excitation coil 2, the magnetostrictive modulus of the magnetorheological elastomer 3 is changed, thereby realizing vibration reduction.

[0026] When the rotor journal 6 vibrates, the rubber cavity 10 and silicone oil 9 of the three-ring squirrel cage device 1 are in a compressed working state. The rubber cavity 10 and silicone oil 9 absorb the vibration energy, and the flow of the rubber cavity 10 and silicone oil 9 further consumes the vibration energy, thus realizing the vibration reduction and isolation of the system.

[0027] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0028] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A rotor dynamic vibration damping and isolation device using a rubber silicone oil ring and a magnetorheological elastomer, comprising a three-ring squirrel cage device (1), characterized in that: The three-ring squirrel cage device (1) is provided with a rubber silicone oil ring device inside and a magnetic component is provided on the outside of the three-ring squirrel cage device (1). The rubber silicone oil ring device and the magnetic component are fixedly installed through the three-ring squirrel cage device (1). The three-ring squirrel cage device (1) includes an outer ring layer (101), a supporting ring layer (102) and an inner ring layer (103). A flange (104) is fixedly installed on the back of the outer ring layer (101), the supporting ring layer (102) and the inner ring layer (103).

2. The rotor dynamic vibration reduction and isolation device of rubber silicone oil ring and magnetorheological elastomer according to claim 1, characterized in that: The rubber silicone oil ring device includes two rubber cavities (10) respectively installed between the outer ring layer (101), the supporting ring layer (102) and the inner ring layer (103), and each rubber cavity (10) is provided with silicone oil (9).

3. The rotor dynamic vibration reduction and isolation device based on a rubber silicone oil ring and a magnetorheological elastomer according to claim 1, characterized in that: The magnetic component includes an excitation coil housing (8), an excitation coil (2) is provided inside the excitation coil housing (8), a magnetorheological elastomer (3) is provided inside the excitation coil (2), and a magnetic isolation ring (5) is provided inside the magnetorheological elastomer (3).

4. The rotor dynamic vibration reduction and isolation device based on a rubber silicone oil ring and a magnetorheological elastomer according to claim 1, characterized in that: The inner wall of the supporting annular layer (102) is fixedly installed with a bearing (4), and a journal (6) is rotatably installed inside the bearing (4).

5. The rotor dynamic vibration reduction and isolation device of rubber silicone oil ring and magnetorheological elastomer according to claim 1, characterized in that: The outer ring layer (101), the supporting ring layer (102) and the inner ring layer (103) are all provided with a set of rectangular through holes (105), and the flange (104) is provided with two sets of bolt holes (106) on the left side of its outer surface.

6. The rotor dynamic vibration reduction and isolation device of rubber silicone oil ring and magnetorheological elastomer according to claim 1, characterized in that: The inner wall of the supporting annular layer (102) is fitted with a sealing ring (7).

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