Horizontal high-temperature superconducting magnetic levitation bearing, centering device and use method

Abstract

This invention discloses a horizontal high-temperature superconducting magnetic levitation bearing, an alignment device, and a method of use. The bearing includes a Dewar support base; a vacuum Dewar device mounted on the Dewar support base, with a vacuum port and a liquid nitrogen port, a vacuum Dewar shell, and an internal liquid nitrogen chamber and superconducting block; and a rotor shaft assembly connected at one end to the vacuum Dewar device, comprising a rotor shaft, a load shaft connected at one end of the rotor shaft, a motor output shaft connected at the other end of the load shaft, several permanent magnets sleeved on the outside of the rotor shaft, a soft iron layer between the permanent magnets, a sheath surrounding the permanent magnets, and an end plate at the end of each permanent magnet. It allows for adjustment in both vertical and horizontal directions. The conical arc surface of the conical alignment mechanism mates with the conical arc surface at the end of the rotor shaft, thus supporting the rotor shaft. It is suitable for horizontally placed ultra-high-speed rotation applications, and has the advantages of small size, light weight, and good alignment.

Description

Technical Field

[0001] This invention relates to the fields of mechanical manufacturing and superconducting magnetic levitation technology, and more specifically, to a horizontal high-temperature superconducting magnetic levitation bearing, an alignment device, and a method of using it. Background Technology

[0002] Currently, known methods include vertical installation, which involves large volume and requires specialized technicians for installation, and may require cold or hot installation under certain conditions; high precision, as each component needs to meet very high precision requirements, which places high demands on the processing technology and results in higher production costs; and high applicability conditions, as ultra-high speed magnetic levitation bearings have a high risk factor during operation and require testing or operation under strict conditions.

[0003] Suitable for ultra-high-speed applications used horizontally, the high-speed motor drives the spindle to rotate at ultra-high speed. The spindle is a three-section shaft. The end near the motor is supported by a mechanical bearing, and the other end is supported by a superconducting magnetic levitation bearing. Under the action of levitation force, it acts as a bearing for the shaft. The middle shaft is used to fix the load. The three-section spindle is fixed and connected into a whole by screws, requiring high centering and high concentricity.

[0004] In summary, the existing technology has at least one of the following technical problems:

[0005] Large size, requiring professional technicians for installation and cold or hot installation under certain conditions; high precision, each existing component needs to meet very high precision requirements, requiring high processing technology and resulting in high production costs; high applicable conditions, ultra-high speed magnetic levitation bearings have a high risk factor during operation and need to be tested or operated under strict conditions; high centering and high concentricity are required. Summary of the Invention

[0006] The main objective of this invention is to provide a horizontal high-temperature superconducting magnetic levitation bearing, an alignment device, and a method of use, to solve at least one of the following technical problems in the prior art: large size, requiring professional technicians for installation and cold or hot installation under certain conditions; high precision, where each component needs to meet very high precision requirements, demanding high processing technology and resulting in high production costs; high applicable conditions, where ultra-high speed magnetic levitation bearings have a high risk factor during operation and need to be tested or operated under strict conditions; and high alignment and concentricity requirements.

[0007] To achieve the above objectives, according to one aspect of the present invention, a horizontal high-temperature superconducting magnetic levitation bearing is provided, comprising:

[0008] Dewar support;

[0009] A vacuum Dewar device is mounted on a Dewar support base and has a vacuum port and a liquid nitrogen port. It has a vacuum Dewar shell and an internal liquid nitrogen chamber and a superconducting block.

[0010] A rotor shaft assembly, one end of which is connected to a vacuum Dewar device, has a rotor shaft, one end of which is connected to a load shaft, one end of which is connected to a motor output shaft, a plurality of permanent magnets are sleeved on the outside of the rotor shaft, a soft iron layer is provided between the permanent magnets, a protective sleeve is provided around the permanent magnets, and an end plate is provided at the end of the permanent magnets;

[0011] A protective bearing is provided, which is located at the vacuum Dewar device and is positioned in a non-contact manner with the rotor shaft.

[0012] Preferably, the superconducting blocks are evenly distributed and installed in the bayonet of the C-shaped liquid nitrogen, and the liquid nitrogen cavity is provided with a liquid nitrogen cavity support. The superconducting blocks are constrained and fixed by the liquid nitrogen cavity and the liquid nitrogen cavity support.

[0013] Preferably, the liquid nitrogen port includes an inlet and an outlet, which are respectively disposed on the end cap of the vacuum Dewar shell, and a conduit is provided at the liquid nitrogen port, which is connected to the liquid nitrogen chamber.

[0014] Preferably, the permanent magnets and soft iron layers are arranged at intervals and are installed on the rotor shaft body by interference fit. The end plates are installed at both ends, and the sheath is made of fibrous material and is wound around the permanent magnet in a circular shape.

[0015] Preferably, the load shaft is an intermediate section, the load shaft is used to mount the load, the rotor shaft is supported by a vacuum Dewar levitation force, and the motor input shaft is supported by a mechanical bearing.

[0016] Preferably, the rotor shaft, load shaft, and motor input shaft are connected by an interference fit at the end face and bolted together, and the rotor shaft, load shaft, and motor input shaft are coaxial.

[0017] Preferably, when the horizontal high-temperature superconducting magnetic levitation bearing is running at high speed, the protective bearing is kept in a non-contact setting with the horizontal high-temperature superconducting magnetic levitation bearing. When the horizontal high-temperature superconducting magnetic levitation bearing unexpectedly loses its levitation force during operation, the protective bearing promptly supports the horizontal high-temperature superconducting magnetic levitation bearing.

[0018] According to another aspect of the present invention, an alignment device for a horizontal high-temperature superconducting magnetic levitation bearing is provided, comprising:

[0019] T-slot platform;

[0020] A high-precision platform, wherein the high-precision platform is mounted on a T-slot platform;

[0021] A manual leveling mechanism is installed at one end of the high-precision platform;

[0022] A laser positioning and ranging device, wherein the laser positioning and ranging device is mounted on a high-precision platform and connected to a manual cranking and leveling mechanism;

[0023] The first support is set on the high-precision platform at one end opposite to the laser displacement ranging device.

[0024] A mechanical bearing, wherein the mechanical bearing is mounted on a first support; and

[0025] The second support is located on the side of the first support away from the laser displacement measuring device;

[0026] A high-speed motor is mounted on a second support.

[0027] Preferably, the manual leveling mechanism includes a vertical leveling mechanism, a horizontal leveling mechanism, and a conical centering mechanism. The vertical and horizontal leveling mechanisms are manual screw-slider mechanisms. The horizontal leveling mechanism is mounted on a high-precision platform, the vertical leveling mechanism is mounted on the slider of the horizontal leveling mechanism, and the conical centering mechanism is mounted on the slider of the vertical leveling mechanism.

[0028] According to another aspect of the present invention, a method of using a horizontal high-temperature superconducting magnetic levitation bearing is provided, comprising:

[0029] During the preparation stage, the main shaft is in a natural static state before rotation. The rotor shaft end is equipped with a support structure. The vertical and horizontal adjustment mechanisms are used to adjust the two degrees of freedom in the vertical and horizontal directions. The conical arc surface of the conical centering mechanism matches the conical arc surface at the rotor shaft end, thereby providing support for the rotor shaft.

[0030] After the preliminary preparation stage is completed, the liquid nitrogen chamber inside the vacuum Dewar device is filled with liquid nitrogen, and the vacuum Dewar shell is evacuated to rapidly cool the internal superconducting block, while the rotor shaft is simultaneously subjected to levitation force.

[0031] The conical centering mechanism is manually disengaged from the rotor shaft. During the ultra-high speed rotation of the motor, there is an air gap between the rotor shaft and the inner wall of the vacuum Dewar device, which is in a suspended state, thus achieving ultra-high speed rotation.

[0032] The technical solution of this invention has the following technical effects:

[0033] The vertical and horizontal leveling mechanisms allow for adjustment in two degrees of freedom: vertical and horizontal. The conical arc surface of the conical centering mechanism matches the conical arc surface at the end of the rotor shaft, thus supporting the rotor shaft and improving centering and concentricity.

[0034] By filling the liquid nitrogen chamber inside the vacuum Dewar device with liquid nitrogen and evacuating the outer shell of the vacuum Dewar, the internal superconducting block is rapidly cooled, and the rotor shaft is simultaneously subjected to a levitation force.

[0035] The conical centering mechanism is manually disengaged from the rotor shaft. During the ultra-high-speed rotation of the motor, there is an air gap between the rotor shaft and the inner wall of the vacuum Dewar device, which is in a suspended state, thus achieving ultra-high-speed rotation.

[0036] Suitable for horizontally placed ultra-high speed rotation applications, it has a small structural size, light weight, and good centering. Attached Figure Description

[0037] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0038] Figure 1 A schematic diagram of the structure of the horizontal high-temperature superconducting magnetic levitation bearing according to the present invention is shown;

[0039] Figure 2 It shows Figure 1 A front view of the horizontal high-temperature superconducting magnetic levitation bearing and platform device.

[0040] Figure 3 It shows Figure 1 A view of a horizontal high-temperature superconducting magnetic levitation bearing.

[0041] Figure 4 It shows Figure 1 A main shaft view of a horizontal high-temperature superconducting magnetic levitation bearing.

[0042] Figure 5 It shows Figure 1 A diagram of the rotor shaft of a horizontal high-temperature superconducting magnetic levitation bearing.

[0043] Figure 6 It shows Figure 1 A diagram of a vacuum Dewar device for a horizontal high-temperature superconducting magnetic levitation bearing.

[0044] Figure 7 It shows Figure 1 Cross-sectional view of the vacuum Dewar device for a horizontal high-temperature superconducting magnetic levitation bearing;

[0045] Figure 8 It shows Figure 1 A structural diagram of the leveling conical centering mechanism of a horizontal high-temperature superconducting magnetic levitation bearing.

[0046] Figure 9 It shows Figure 1The working state of the horizontal high-temperature superconducting magnetic levitation bearing is shown in the view of the conical centering mechanism detached from the bearing.

[0047] The above figures include the following reference numerals:

[0048] 1. T-slot platform; 2. High-precision platform; 3. Manual leveling mechanism; 3-1. Horizontal leveling mechanism; 3-2. Vertical leveling mechanism; 3-3. Conical centering mechanism; 4. Laser positioning and ranging device; 5. Magnetic levitation superconducting bearing; 6. Mechanical bearing; 7. Coupling; 8. High-speed motor; 9. Protective bearing; 5-1. Vacuum Dewar device; 5-1-2. Vacuum Dewar shell; 5-1-3. Liquid port; 5-1-4. Liquid nitrogen chamber; 5-1-5. Superconducting block; 5-1-6. Liquid nitrogen chamber support; 5-2. Dewar support seat; 5-3. Rotor shaft assembly; 5-3-1. Rotor shaft; 5-3-1. Permanent magnet; 5-3-1-1. End plate; 5-3-1-2. Sheath; 5-3-1-3. Soft iron layer; 5-3-1-4. Load shaft; 5-3-2. Motor output shaft; 5-3-3. Detailed Implementation

[0049] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0050] like Figures 1 to 9 As shown, this embodiment of the invention provides a horizontal high-temperature superconducting magnetic levitation bearing, comprising: a Dewar support 5-2; a vacuum Dewar device 5-1, disposed on the Dewar support 5-2, having a vacuum port and a liquid nitrogen port, having a vacuum Dewar outer shell 5-1-2, and having a liquid nitrogen chamber 5-1-4 and a superconducting block 5-1-5 inside; a rotor shaft 5-3-1 assembly 5-3, one end of which is connected to the vacuum Dewar device 5-1, having a rotor shaft 5-3-1, one end of which is connected to a load shaft 5-3-2, the load shaft 5-3-1... -3-2 is connected to a motor output shaft 5-3-3 at one end. Several permanent magnets 5-3-1-1 are sleeved on the outside of the rotor shaft 5-3-1. A soft iron layer 5-3-1-4 is provided between the permanent magnets 5-3-1-1. A protective sleeve 5-3-1-3 is provided around the permanent magnets 5-3-1-1. An end plate 5-3-1-2 is provided at the end of the permanent magnets 5-3-1-1. A protective bearing 9 is provided. The protective bearing 9 is located at the vacuum Dewar device 5-1. The protective bearing 9 is not in contact with the rotor shaft 5-3-1.

[0051] Example 1

[0052] In this embodiment, the superconducting magnetic levitation bearing consists of a vacuum Dewar device 5-1, a Dewar support 5-2, and a rotor shaft 5-3-1 assembly 5-3. The rotor shaft 5-3-1 is fixed by the vacuum Dewar device 5-1 and a mechanical bearing 6. One end of the rotor shaft 5-3-1 is supported by the levitation force generated by the vacuum Dewar device 5-1, while the other end is supported by the mechanical bearing 6. A protective bearing 9 is installed at the shaft end that generates the levitation force, serving to protect the equipment. The protective bearing 9 does not contact the superconducting magnetic levitation bearing, ensuring minimal clearance. When the bearing is operating at high speed, the protective bearing 9 is inactive. However, if an accident occurs during bearing operation, such as loss of levitation force, the protective bearing 9 can provide timely support to prevent equipment damage.

[0053] like Figure 2 As shown, the function of the high-precision platform 2 is to ensure that the superconducting magnetic levitation bearing, mechanical bearing 6, protective bearing 9 and the axis of the high-speed motor remain concentric, so as to ensure smooth operation during ultra-high-speed rotation.

[0054] In this embodiment, the Dewar support 5-2 provides support. The vacuum Dewar device 5-1, mounted on the Dewar support 5-2, has a vacuum port and a liquid nitrogen port. It has a vacuum Dewar shell 5-1-2, inside which is a liquid nitrogen chamber 5-1-4 and a superconducting block 5-1-5. The superconducting block 5-1-5 is evenly distributed and installed in the C-shaped liquid nitrogen bayonet. The liquid nitrogen chamber 5-1-4 has a liquid nitrogen chamber support 5-1-6. The superconducting block 5-1-5 is constrained and fixed by the liquid nitrogen chamber 5-1-4 and the liquid nitrogen chamber support 5-1-6. The liquid nitrogen port includes an inlet and an outlet, which are respectively located on the end cap of the vacuum Dewar shell 5-1-2. A conduit is provided at the liquid nitrogen port, and the conduit communicates with the liquid nitrogen chamber 5-1-4. Specifically, the vacuum Dewar device 5-1 includes a vacuum Dewar shell 5-1-2, a vacuum port, a liquid nitrogen port, a liquid nitrogen chamber 5-1-4, a superconducting block 5-1-5, and a liquid nitrogen chamber support 5-1-6. The superconducting block 5-1-5, as a key component of the superconducting magnetic levitation bearing, is evenly distributed and installed within the bayonet of the C-shaped liquid nitrogen chamber 5-1-4. The superconducting block 5-1-5 is constrained and fixed by the liquid nitrogen chamber 5-1-4 and the liquid nitrogen chamber support 5-1-6. The liquid nitrogen chamber support 5-1-6 is placed inside the vacuum Dewar shell 5-1-2 to limit the liquid nitrogen chamber 5-1-4 and is made of a non-thermal-conducting material. There are two liquid nitrogen ports, an inlet and an outlet, respectively installed on the front end cover of the vacuum Dewar shell 5-1-2. The conduit of the liquid nitrogen port communicates with the liquid nitrogen chamber 5-1-4 and extends out from the front end cover of the vacuum Dewar shell 5-1-2. The vacuum port is installed on the front cover of the vacuum Dewar shell 5-1-2 to evacuate the internal cavity of the vacuum Dewar shell 5-1-2. Its function is to provide a vacuum layer to ensure that the temperature of the internal liquid nitrogen cavity 5-1-4 is balanced and does not leak out.

[0055] In this embodiment, one end of the rotor shaft 5-3-1 assembly 5-3 is connected to the vacuum Dewar device 5-1, and it has a rotor shaft 5-3-1 structure. The rotor shaft 5-3-1 includes permanent magnets 5-3-1-1, end plates 5-3-1-2, sheaths 5-3-1-3, and soft iron layers 5-3-1-4. The permanent magnets 5-3-1-1 and soft iron layers 5-3-1-4 are arranged at intervals and are interference-fitted onto the shaft. The end plates 5-3-1-2 are installed at both ends. The sheaths 5-3-1-3 are made of fibrous material and are circumferentially wrapped around the permanent magnets 5-3-1-1 to protect the entire rotor and prevent displacement under the centrifugal force generated by the permanent magnets 5-3-1-1 at high speeds. One end of the rotor shaft 5-3-1 is connected to the load shaft 5-3-2, and the other end of the load shaft 5-3-2 is connected to the motor output shaft 5-3-3. Several permanent magnets 5-3-1-1 are sleeved on the outside of the rotor shaft 5-3-1. A soft iron layer 5-3-1-4 is provided between the permanent magnets 5-3-1-1. A protective sleeve 5-3-1-3 is provided around the permanent magnets 5-3-1-1. An end plate 5-3-1-2 is provided at the end of the permanent magnets 5-3-1-1. A protective bearing 9 is provided, which is located at the vacuum Dewar device 5-1. The protective bearing 9 is not in contact with the rotor shaft 5-3-1. Permanent magnets 5-3-1-1 and soft iron layers 5-3-1-4 are arranged at intervals and are mounted on the rotor shaft 5-3-1 with an interference fit. End plates 5-3-1-2 are mounted at both ends, and a sheath 5-3-1-3, made of fibrous material, is wound circumferentially around the permanent magnets 5-3-1-1. The load shaft 5-3-2 is the middle section and is used to mount the load. The rotor shaft 5-3-1 is supported by a vacuum Dewar levitation force, and the motor input shaft is supported by a mechanical bearing 6. The rotor shaft 5-3-1, load shaft 5-3-2, and motor input shaft are connected by an interference fit at the end face and bolted together. The rotor shaft 5-3-1, load shaft 5-3-2, and motor input shaft are coaxial. When the horizontal high-temperature superconducting magnetic levitation bearing is running at high speed, the protective bearing 9 is kept in a non-contact setting with the horizontal high-temperature superconducting magnetic levitation bearing. When the horizontal high-temperature superconducting magnetic levitation bearing loses its levitation force unexpectedly during operation, the protective bearing 9 will support the horizontal high-temperature superconducting magnetic levitation bearing in time.

[0056] Specifically, the superconducting magnetic levitation bearing spindle is a three-section spliced ​​spindle, including the rotor shaft 5-3-1, the load shaft 5-3-2, and the motor input shaft. The load shaft 5-3-2 serves as the middle section, where the load is installed. The entire spindle is supported at both ends. The rotor shaft 5-3-1 end requires levitation support provided by a vacuum Dewar, while the motor input shaft section requires support from a mechanical bearing 6. The connection between each shaft section uses an end face interference fit and bolt connection to ensure the concentricity accuracy requirements of the entire spindle.

[0057] Example 2

[0058] Based on Embodiment 1, this embodiment provides a centering device for a horizontal high-temperature superconducting magnetic levitation bearing, comprising: a T-slot platform 1; a high-precision platform 2, wherein the high-precision platform 2 is disposed on the T-slot platform 1; a manual leveling mechanism 3, wherein the manual leveling mechanism 3 is disposed at one end of the high-precision platform 2; a laser positioning and ranging device 4, wherein the laser positioning and ranging device 4 is disposed on the high-precision platform 2 and connected to the manual cranking and leveling mechanism; a first support, wherein the first support is disposed on the high-precision platform 2 at the end opposite to the laser displacement and ranging device; a mechanical bearing 6, wherein the mechanical bearing 6 is disposed on the first support; a second support, wherein the second support is disposed on the side of the first support away from the laser displacement and ranging device; and a high-speed motor 8, wherein the high-speed motor 8 is disposed on the second support.

[0059] The manual leveling mechanism 3 includes a vertical leveling mechanism 3-2, a horizontal leveling mechanism 3-1, and a conical centering mechanism 3-3. The vertical leveling mechanism 3-2 and the horizontal leveling mechanism 3-1 are manual screw-slider mechanisms. The horizontal leveling mechanism 3-1 is mounted on the high-precision platform 2, the vertical leveling mechanism 3-2 is mounted on the slider of the horizontal leveling mechanism 3-1, and the conical centering mechanism 3-3 is mounted on the slider of the vertical leveling mechanism 3-2.

[0060] In this embodiment, one end of the superconducting magnetic levitation bearing device adopts a mechanical bearing 6, which includes a T-slot platform 1, a high-precision platform 2, a manual leveling mechanism 3, a laser positioning and ranging device 4, a magnetic levitation superconducting bearing 5, a mechanical bearing 6, a coupling 7, a high-speed motor 8, and a protective bearing 9. The T-slot platform 1 is the base for placing the superconducting magnetic levitation bearing and has a supporting function. It is placed on the ground, and the platform has two rows of T-slots for placing T-bolts. The high-precision platform 2 is fixedly connected to the T-slot platform 1. The high-precision platform 2 is the installation platform for the superconducting magnetic levitation bearing, ensuring the concentricity of each part of the bearing structure after installation and assembly. The manual leveling mechanism 3 mainly functions to center the rotor shaft 5-3-1, which does not have levitation force, so that the entire main shaft is in a horizontal state relative to the platform. It is composed of two degrees of freedom: horizontal leveling mechanism 3-1 and vertical leveling mechanism 3-2. The laser displacement measuring device is fixed on the high-precision platform 2. This device is used to measure the radial displacement of the magnetic levitation bearing rotor shaft 5-3-1 during the ultra-high speed rotation of the main shaft. The magnetic levitation superconducting bearing 5 is fixed on the high-precision platform 2. The mechanical bearing 6 is fixed on the high-precision platform 2. The coupling 7 connects the superconducting magnetic levitation bearing and the high-speed motor 8.

[0061] Specifically, the leveling conical centering mechanism 3-3 includes a vertical leveling mechanism 3-2, a horizontal leveling mechanism 3-1, and a conical centering mechanism 3-3. The vertical leveling mechanism 3-2 and the horizontal leveling mechanism 3-1 are hand-cranked screw-slider mechanisms. The horizontal leveling mechanism 3-1 is mounted on the high-precision platform 2, the vertical leveling mechanism 3-2 is mounted on the slider of the horizontal leveling mechanism 3-1, and the conical centering mechanism 3-3 is mounted on the slider of the vertical leveling mechanism 3-2. During the preparation stage, before the main shaft rotates, it is in a naturally static state. The rotor shaft 5-3-1 has no support structure at the end; adjustment in both the vertical and horizontal directions is mainly achieved through the vertical leveling mechanism 3-2 and the horizontal leveling mechanism 3-1. The conical arc surface of the conical centering mechanism 3-3 mates with the conical arc surface at the end of the rotor shaft 5-3-1, thus providing support for the rotor shaft 5-3-1. After the preliminary preparation stage, liquid nitrogen is filled into the liquid nitrogen chamber 5-1-4 inside the vacuum Dewar device 5-1. A vacuum is then evacuated from the outer shell 5-1-2 of the vacuum Dewar, causing the internal superconducting block 5-1-5 to cool rapidly. Simultaneously, the rotor shaft 5-3-1 is subjected to a levitation force. Figure 9 As shown, the conical centering mechanism 3-3 can be manually disengaged from the rotor shaft 5-3-1 at this time. During the ultra-high speed rotation of the motor, there is an air gap between the rotor shaft 5-3-1 and the inner wall of the vacuum Dewar device 5-1, which is in a suspended state, thus achieving ultra-high speed rotation.

[0062] Example 3

[0063] Based on Examples 1 and 2, this example provides a method for using a horizontal high-temperature superconducting magnetic levitation bearing, including:

[0064] During the preparation stage, the main shaft is in a natural static state before rotation. The rotor shaft 5-3-1 end is equipped with a support structure. The vertical leveling mechanism 3-2 and the horizontal leveling mechanism 3-1 are used to adjust the two degrees of freedom in the vertical and horizontal directions. The conical arc surface of the conical centering mechanism 3-3 cooperates with the conical arc surface at the end of the rotor shaft 5-3-1, thereby providing support for the rotor shaft 5-3-1.

[0065] After the preliminary preparation stage is completed, liquid nitrogen is filled into the liquid nitrogen chamber 5-1-4 inside the vacuum Dewar device 5-1, and the vacuum Dewar outer shell 5-1-2 is evacuated to rapidly cool the internal superconducting block 5-1-5. At the same time, the rotor shaft 5-3-1 is subjected to levitation force.

[0066] The conical centering mechanism 3-3 is manually disengaged from the rotor shaft 5-3-1. During the ultra-high speed rotation of the motor, there is an air gap between the rotor shaft 5-3-1 and the inner wall of the vacuum Dewar device 5-1, which is in a suspended state, thus achieving ultra-high speed rotation.

[0067] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0068] The vertical leveling mechanism 3-2 and the horizontal leveling mechanism 3-1 are used to adjust the two degrees of freedom in the vertical and horizontal directions. The conical arc surface of the conical centering mechanism 3-3 matches the conical arc surface at the end of the rotor shaft 5-3-1, thereby supporting the rotor shaft 5-3-1 and improving the centering and concentricity.

[0069] By filling the liquid nitrogen chamber 5-1-4 inside the vacuum Dewar device 5-1 with liquid nitrogen and evacuating the vacuum Dewar outer shell 5-1-2, the internal superconducting block 5-1-5 is rapidly cooled, and the rotor shaft 5-3-1 is simultaneously subjected to levitation force.

[0070] The conical centering mechanism 3-3 is manually disengaged from the rotor shaft 5-3-1. During the ultra-high speed rotation of the motor, there is an air gap between the rotor shaft 5-3-1 and the inner wall of the vacuum Dewar device 5-1, which is in a suspended state, thus achieving ultra-high speed rotation.

[0071] Suitable for horizontally placed ultra-high speed rotation applications, it has a small structural size, light weight, and good centering.

[0072] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A horizontal high-temperature superconducting magnetic levitation bearing, characterized in that, include: Dewar support; A vacuum Dewar device is mounted on a Dewar support base and has a vacuum port and a liquid nitrogen port. It has a vacuum Dewar shell and an internal liquid nitrogen chamber and a superconducting block. The rotor shaft assembly includes a rotor shaft, a load shaft, and a motor output shaft connected in sequence. One end of the rotor shaft is connected to a vacuum Dewar device. The load shaft is used to mount a load, and the motor output shaft is used to connect to a high-speed motor. Several permanent magnets are sleeved on the outside of the rotor shaft, with a soft iron layer between the permanent magnets. A sheath is provided around the permanent magnets, and end plates are provided at the ends of the permanent magnets. The load shaft is an intermediate section. The rotor shaft is supported by levitation force provided by the vacuum Dewar device, and the motor output shaft is supported by mechanical bearings. A protective bearing is provided, which is located at the vacuum Dewar device and is positioned in a non-contact manner with the rotor shaft. The centering device includes a mechanical bearing and a manual leveling mechanism, with the motor output shaft supported by the mechanical bearing. The manual leveling mechanism includes a vertical leveling mechanism, a horizontal leveling mechanism, and a conical centering mechanism. The vertical and horizontal leveling mechanisms are used to adjust the two degrees of freedom in the vertical and horizontal directions, respectively. The conical arc surface of the conical centering mechanism is used to cooperate with the conical arc surface at the end of the rotor shaft to support and center the rotor shaft.

2. The horizontal high-temperature superconducting magnetic levitation bearing as described in claim 1, characterized in that, The superconducting blocks are evenly distributed and installed in the bayonet of the C-shaped liquid nitrogen. The liquid nitrogen cavity is provided with a liquid nitrogen cavity support. The superconducting blocks are constrained and fixed by the liquid nitrogen cavity and the liquid nitrogen cavity support.

3. The horizontal high-temperature superconducting magnetic levitation bearing as described in claim 1, characterized in that, The liquid nitrogen port includes an inlet and an outlet, which are respectively located on the end cap of the vacuum Dewar shell. A conduit is provided at the liquid nitrogen port, and the conduit is connected to the liquid nitrogen chamber.

4. The horizontal high-temperature superconducting magnetic levitation bearing as described in claim 1, characterized in that, The permanent magnets and soft iron layers are arranged at intervals and are installed on the rotor shaft body by interference fit. The end plates are installed at both ends, and the sheath is made of fibrous material and is wrapped around the permanent magnet in a circular shape.

5. The horizontal high-temperature superconducting magnetic levitation bearing as described in claim 1, characterized in that, The rotor shaft, load shaft, and motor output shaft are connected by an interference fit at the end face and bolted together, and the rotor shaft, load shaft, and motor output shaft are coaxial.

6. The horizontal high-temperature superconducting magnetic levitation bearing as described in claim 1, characterized in that, When the horizontal high-temperature superconducting magnetic levitation bearing is running at high speed, the protective bearing is kept in a non-contact setting with the horizontal high-temperature superconducting magnetic levitation bearing. When the horizontal high-temperature superconducting magnetic levitation bearing unexpectedly loses its levitation force during operation, the protective bearing will support the horizontal high-temperature superconducting magnetic levitation bearing in time.

7. A centering device for a horizontal high-temperature superconducting magnetic levitation bearing, based on the horizontal high-temperature superconducting magnetic levitation bearing according to any one of claims 1-6, characterized in that, include: T-slot platform; A high-precision platform, wherein the high-precision platform is mounted on a T-slot platform; A manual leveling mechanism is provided at one end of a high-precision platform. The manual leveling mechanism includes a vertical leveling mechanism, a horizontal leveling mechanism, and a conical centering mechanism. The vertical and horizontal leveling mechanisms are manually operated lead screw and slider mechanisms. The horizontal leveling mechanism is mounted on the high-precision platform, the vertical leveling mechanism is mounted on the slider of the horizontal leveling mechanism, and the conical centering mechanism is mounted on the slider of the vertical leveling mechanism. A laser positioning and ranging device, wherein the laser positioning and ranging device is mounted on a high-precision platform and connected to a manual leveling mechanism; The first support is set on the high-precision platform at one end opposite to the laser positioning and ranging device. A mechanical bearing, wherein the mechanical bearing is mounted on a first support; as well as The second support is located on the side of the first support away from the laser positioning and ranging device; A high-speed motor is mounted on a second support.

8. A method of using the alignment device for a horizontal high-temperature superconducting magnetic levitation bearing as described in claim 7, characterized in that, include: During the preparation stage, the main shaft is in a natural static state before rotation. The rotor shaft end is equipped with a support structure. The vertical and horizontal adjustment mechanisms are used to adjust the two degrees of freedom in the vertical and horizontal directions. The conical arc surface of the conical centering mechanism matches the conical arc surface at the rotor shaft end, thereby providing support for the rotor shaft. After the preliminary preparation stage, the liquid nitrogen chamber inside the vacuum Dewar device is filled with liquid nitrogen, and the vacuum Dewar shell is evacuated to rapidly cool the internal superconducting block. At the same time, the rotor shaft is subjected to a levitation force. The conical centering mechanism is manually disengaged from the rotor shaft. During the ultra-high speed rotation of the motor, there is an air gap between the rotor shaft and the inner wall of the vacuum Dewar device, which is in a suspended state, achieving ultra-high speed rotation.

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