Radial supporting device for high-temperature superconducting rotor magnet

Abstract

The invention discloses a radial supporting device for a high-temperature superconducting rotor magnet, and relates to the technical field of superconducting synchronous phase modifiers, the radial supporting device comprises a rotor shell, a rotor body is fixedly connected to the interior of the rotor shell, a plurality of abutting blocks are movably connected to the outer surface of the rotor body, and the concave surfaces of the abutting blocks are attached to the external curve of the rotor body. And the plurality of abutting blocks are uniformly distributed around the circumference of the rotor body. When the acting force is large, after the bottom abutting rod and the top abutting rod abut against each other, the elastic buffering arc plate can elastically deform under the action of the force, so that the second-stage supporting and buffering effect is achieved, meanwhile, the bottom plate and the top plate get close to each other, the sliding rod and the piston plate slide along the inner wall of the sliding sleeve, gas in and out of the sliding sleeve is compressed, and the gas in the sliding sleeve is compressed. And when the sliding rod, the piston plate and the sliding sleeve cannot generate relative displacement, the second-stage supporting and buffering effect is the strongest at the moment.

Description

Technical Field

[0001] The present invention relates to the technical field of superconducting synchronous condensers, and particularly relates to a radial support device for a high-temperature superconducting rotor magnet. Background Art

[0002] In high-temperature superconducting rotor magnets, at present, a support structure is mainly arranged in the axial position of the rotor, that is, the support required in the radial direction is decomposed into the axial direction, so that the arrangement of the support structure in the radial direction can be reduced, but this will lead to a longer rotor length. At the same time, the axial support has a relatively poor effect in resisting the centrifugal force brought by high rotation speeds, and the superconducting magnet part in the middle is prone to be affected by vibration due to the too long length, which is not conducive to protecting the superconducting magnet and regulating the dynamic balance. An appropriate axial length can effectively increase the overall mechanical strength of the rotor.

[0003] At present, a part of the support function is often provided by reinforcing ribs and a framework. However, due to the relatively simple structure and strong rigidity, the support effect is good, but the buffering effect is poor. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a radial support device for a high-temperature superconducting rotor magnet. The technical solution adopted by the present invention is as follows:

[0005] A radial support device for a high-temperature superconducting rotor magnet includes a rotor housing. A rotor body is fixedly connected inside the rotor housing. A plurality of abutting blocks are movably connected to the outer surface of the rotor body. The concave surface of the abutting block fits the outer curve of the rotor body, and the plurality of abutting blocks are evenly distributed around the circumference of the rotor body.

[0006] A grading buffer mechanism is provided between each abutting block and the inner wall of the rotor housing. The grading buffer mechanism includes a primary buffer assembly and a secondary buffer assembly.

[0007] The primary buffer assembly includes a bottom mounting cross plate fixedly connected to the abutting block. A telescopic rod is fixedly connected to the bottom mounting cross plate. The other end of the telescopic rod is fixedly connected to the secondary buffer assembly through a top mounting cross plate. A buffer gasket is sleeved on the outer surface of the telescopic rod.

[0008] Further improvement of the technical solution of the present invention lies in that: a bottom abutting rod is fixedly connected to the bottom mounting cross plate, and a top abutting rod is fixedly connected to the top mounting cross plate. The bottom abutting rod and the top abutting rod are arranged in alignment.

[0009] Further improvement of the technical solution of the present invention lies in that: the secondary buffer assembly includes a bottom plate fixedly connected to the top mounting cross plate. An elastic buffer arc plate is fixedly connected to the outer surface of the bottom plate. A top plate is fixedly connected to the inner side of the top end of the elastic buffer arc plate.

[0010] A further improvement of the technical solution of the present invention lies in that: the acting force received by the elastic buffer arc plate when it undergoes elastic deformation is greater than the force acting on the buffer gasket when the bottom abutting rod and the top abutting rod are abutted and the buffer gasket is compressed.

[0011] A further improvement of the technical solution of the present invention lies in that: a sliding rod is fixedly connected to the inner wall of the bottom plate, one end of the sliding rod is fixedly connected to a piston plate, and a sliding sleeve is movably connected to the outside of the sliding rod and the piston plate, and one end of the sliding sleeve is fixedly connected to the inner wall of the top plate.

[0012] A further improvement of the technical solution of the present invention lies in that: air holes are provided on the top plate and the sliding sleeve, an electric control valve is installed in the air holes, the outer surface of the top plate is fixedly connected with an air storage chamber, the air holes are communicated with the inside of the air storage chamber, and the top of the air storage chamber is fixedly connected to the inner wall of the rotor housing.

[0013] A further improvement of the technical solution of the present invention lies in that: two valve wires are electrically connected to the outside of the electric control valve, one end of each valve wire is electrically connected to a communication contact, the communication contact is fixedly connected to the inner wall of the sliding sleeve, a power storage device is fixedly connected to the inside of the sliding rod, a positive wire and a negative wire are electrically connected to the power storage device, one end of the positive wire and the negative wire are both electrically connected to a power supply contact, and the power supply contact is fixedly connected to the piston plate, and the piston plate and the power supply contact slide along the inner wall of the sliding sleeve.

[0014] A further improvement of the technical solution of the present invention lies in that: when the piston plate slides along the inner wall of the sliding sleeve and is not in contact with the communication contact, the gas inside the sliding sleeve is compressed, and no relative displacement can occur between the sliding rod and the sliding sleeve, that is, the elastic buffer arc plate cannot be further compressed. When the electric control valve is opened, the compressed gas in the sliding sleeve enters the air storage chamber, so that relative displacement can continue to occur between the sliding rod and the sliding sleeve, that is, the elastic buffer arc plate is further compressed to cause it to undergo elastic deformation.

[0015] A further improvement of the technical solution of the present invention lies in that: the rotor housing is made of Dewar material.

[0016] Due to the adoption of the above technical solution, the technical progress achieved by the present invention compared with the prior art is:

[0017] 1. The present invention provides a radial support device for a high-temperature superconducting rotor magnet. When the acting force is small, the acting force is generated on the bottom mounting cross plate through the abutting block, so that the telescopic rod and the buffer gasket are compressed, and the buffer gasket undergoes elastic deformation. The buffer gasket has the characteristic of restoring deformation, so a reverse acting force will be generated to form a first-stage buffer support effect.

[0018] 2. The present invention provides a radial support device for a high-temperature superconducting rotor magnet. When the acting force is large, after the bottom abutting rod and the top abutting rod are abutted, the acting force can cause the elastic buffer arc plate to undergo elastic deformation, thereby forming a second-level support and buffer effect. At the same time, the bottom plate and the top plate approach each other, and the sliding rod and the piston plate slide along the inner wall of the sliding sleeve, compressing the gas entering and exiting the sliding sleeve until no relative displacement can occur between the sliding rod, the piston plate and the sliding sleeve. At this time, the second-level support and buffer effect reaches the strongest.

[0019] 3. The present invention provides a radial support device for a high-temperature superconducting rotor magnet. When the acting force further increases, when the piston plate drives the power contact to move along the inner wall of the sliding sleeve and abuts against the connecting contact, the circuit between the electric control valve and the power storage device is connected, so that the electric control valve remains open. The compressed gas in the sliding sleeve enters the gas storage chamber through the air holes, so that the sliding rod and the piston plate can continue to slide along the inner wall of the sliding sleeve, so that the elastic buffer arc plate is further compressed, undergoes greater deformation, and generates a stronger reverse acting force. At this time, it is the third-level support and buffer effect.

[0020] 4. The present invention provides a radial support device for a high-temperature superconducting rotor magnet. When the rotor body has dynamic imbalance, the centrifugal force generated by high-speed rotation exerts different acting forces on the hierarchical buffer mechanism. According to the acting forces of different magnitudes, different support effects and buffer and shock absorption effects are formed through the first-level buffer assembly and the second-level buffer assembly, avoiding the problem that due to the strong rigidity of the material, its support effect is good, but the buffer effect is poor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present invention;

[0022] Figure 2 is a schematic cross-sectional structural diagram of the hierarchical buffer mechanism of the present invention;

[0023] Figure 3 is a schematic cross-sectional structural diagram inside the elastic buffer arc plate of the present invention;

[0024] Figure 4 is a schematic connection structural diagram of the electric control valve of the present invention;

[0025] Figure 5 is a schematic structural diagram when the electric control valve of the present invention is opened;

[0026] Figure 6 is of the present invention Figure 2 The enlarged structural diagram of part A in.

[0027] In the figure: 1. Rotor housing; 2. Rotor body; 3. Contact block; 4. Bottom mounting cross plate; 5. Bottom contact rod; 6. Telescopic rod; 7. Buffer gasket; 8. Top contact rod; 9. Top mounting cross plate; 10. Bottom plate; 11. Top plate; 12. Elastic buffer arc plate; 13. Slide bar; 14. Slide sleeve; 15. Piston plate; 16. Electric control valve; 17. Gas storage bin; 18. Power storage device; 19. Positive electrode wire; 20. Negative electrode wire; 21. Power contact; 22. Connecting contact; 23. Valve wire. Detailed implementation mode

[0028] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. To achieve the above objectives, the present invention adopts the following technical solutions.

[0029] Embodiment:

[0030] As Figures 1 - 3 shown, the present invention provides a radial support device for a high-temperature superconducting rotor magnet, including a rotor housing 1 made of Dewar material, which plays a role of heat preservation and insulation while also serving as a damping winding. A rotor body 2 is fixedly connected inside the rotor housing 1. A plurality of contact blocks 3 are movably connected to the outer surface of the rotor body 2. The concave surface of the contact block 3 fits the external curve of the rotor body 2. The plurality of contact blocks 3 are evenly distributed around the circumference of the rotor body 2 to avoid adverse effects on dynamic balance.

[0031] As Figure 2 shown, a hierarchical buffer mechanism is provided between each contact block 3 and the inner wall of the rotor housing 1. The hierarchical buffer mechanism includes a primary buffer component and a secondary buffer component.

[0032] When the rotor body 2 has dynamic imbalance, the centrifugal force generated by high-speed rotation acts on the hierarchical buffer mechanism through the contact block 3 with different forces. According to the different magnitudes of the acting forces, different support effects and buffer and shock absorption effects are formed through the primary buffer component and the secondary buffer component.

[0033] As Figure 6As shown in the figure, the primary buffer assembly includes a bottom mounting cross plate 4 fixedly connected to the abutting block 3. A telescopic rod 6 is fixedly connected to the bottom mounting cross plate 4. The other end of the telescopic rod 6 is fixedly connected to the secondary buffer assembly through a top mounting cross plate 9. A buffer gasket 7 is sleeved on the outer surface of the telescopic rod 6. A plurality of buffer gaskets 7 are superposed and sleeved outside the telescopic rod 6, and the thickness of the plurality of buffer gaskets 7 is the same as the distance between the bottom mounting cross plate 4 and the top mounting cross plate 9. The buffer gasket 7 is made of a material with elastic buffering performance, such as rubber, silica gel, polyurethane, etc.

[0034] When the acting force is small, an acting force is generated on the bottom mounting cross plate 4 through the abutting block 3, causing the telescopic rod 6 and the buffer gasket 7 to be compressed. The buffer gasket 7 undergoes elastic deformation. The buffer gasket 7 has the characteristic of restoring deformation. Therefore, a reverse acting force will be generated to form a primary buffer support effect, avoiding the problem that due to the strong rigidity of the material, its support effect is good, but the buffer effect is poor.

[0035] Furthermore, a bottom abutting rod 5 is fixedly connected to the bottom mounting cross plate 4, and a top abutting rod 8 is fixedly connected to the top mounting cross plate 9. The bottom abutting rod 5 and the top abutting rod 8 are arranged in alignment. When the telescopic rod 6 is compressed, the bottom abutting rod 5 and the top abutting rod 8 approach each other. When the bottom abutting rod 5 and the top abutting rod 8 abut, it will prevent the buffer gasket 7 from further elastic deformation under the action of force. At this time, the centrifugal force generated by the rotor body 2 will trigger the action of the secondary buffer assembly. At this time, the buffer gasket 7 is not completely compressed and can automatically return to its original state without external force.

[0036] Furthermore, as Figures 3 - 5 shown, the secondary buffer assembly includes a bottom plate 10 fixedly connected to the top mounting cross plate 9. An elastic buffer arc plate 12 is fixedly connected to the outer surface of the bottom plate 10. The elastic buffer arc plate 12 is made of an elastic material. The inner side of the top end of the elastic buffer arc plate 12 is fixedly connected to a top plate 11. When the centrifugal force generated by the rotor body 2 reaches the trigger of the secondary buffer assembly, through the action of the bottom plate 10 and the top plate 11, a force is generated on the elastic buffer arc plate 12, causing it to undergo elastic deformation and further forming a strong support buffer effect.

[0037] Furthermore, the acting force when the elastic buffer arc plate 12 undergoes elastic deformation is greater than the force when the buffer gasket 7 is compressed when the bottom abutting rod 5 and the top abutting rod 8 abut. When the bottom abutting rod 5 and the top abutting rod 8 do not abut, the acting force generated by compressing the buffer gasket 7 cannot cause the elastic buffer arc plate 12 to undergo elastic deformation. After the bottom abutting rod 5 and the top abutting rod 8 abut, the force can cause the elastic buffer arc plate 12 to undergo elastic deformation, thereby forming a secondary support buffer effect.

[0038] Further, a slide bar 13 is fixedly connected to the inner wall of the bottom plate 10. One end of the slide bar 13 is fixedly connected to a piston plate 15. A slide sleeve 14 is movably connected to the outside of the slide bar 13 and the piston plate 15. One end of the slide sleeve 14 is fixedly connected to the inner wall of the top plate 11. When the elastic buffer arc plate 12 is compressed and undergoes elastic deformation, the bottom plate 10 and the top plate 11 approach each other, and the slide bar 13 and the piston plate 15 slide along the inner wall of the slide sleeve 14, compressing the gas entering and exiting the inside of the slide sleeve 14. When there is no relative displacement between the slide bar 13, the piston plate 15 and the slide sleeve 14, the elastic buffer arc plate 12 cannot be further compressed, and a stronger reverse force is generated. At this time, the support and buffer effect of the second stage reaches the strongest.

[0039] Further, air holes are formed in the top plate 11 and the slide sleeve 14, and an electric control valve 16 is installed in the air holes. A gas storage chamber 17 is fixedly connected to the outer surface of the top plate 11. The air holes are internally connected to the gas storage chamber 17. The top of the gas storage chamber 17 is fixedly connected to the inner wall of the rotor housing 1. When the acting force is further increased, the electric control valve 16 opens, and the compressed gas in the slide sleeve 14 enters the gas storage chamber 17 through the air holes, enabling the slide bar 13 and the piston plate 15 to continue sliding along the inner wall of the slide sleeve 14, causing the elastic buffer arc plate 12 to be further compressed, undergo greater deformation, and generate a stronger reverse acting force. At this time, it is the support and buffer effect of the third stage.

[0040] Further, two valve wires 23 are electrically connected to the outside of the electric control valve 16. One end of each valve wire 23 is electrically connected to a connection contact 22. The connection contact 22 is fixedly connected to the inner wall of the slide sleeve 14. A power storage device 18 is fixedly connected to the inside of the slide bar 13. A positive wire 19 and a negative wire 20 are electrically connected to the power storage device 18. One end of the positive wire 19 and the negative wire 20 are electrically connected to a power supply contact 21. The power supply contact 21 is fixedly connected to the piston plate 15. The piston plate 15 and the power supply contact 21 slide along the inner wall of the slide sleeve 14. When the piston plate 15 drives the power supply contact 21 to move along the inner wall of the slide sleeve 14 and abut against the connection contact 22, the circuit between the electric control valve 16 and the power storage device 18 is connected, causing the electric control valve 16 to remain open. When the acting force disappears, the compressed gas entering the gas storage chamber 17 will fall back into the slide sleeve 14 through the electric control valve 16. When the power supply contact 21 separates from the connection contact 22, the circuit between the electric control valve 16 and the power storage device 18 is disconnected, and the electric control valve 16 closes. The piston plate 15 and the slide bar 13 gradually return to their original positions under the action of the compressed elastic buffer arc plate 12.

[0041] Further, when the piston plate 15 slides along the inner wall of the sliding sleeve 14 and does not abut against the connecting contact 22, the gas inside the sliding sleeve 14 is compressed, and no relative displacement can occur between the sliding rod 13 and the sliding sleeve 14, that is, the elastic buffer arc plate 12 cannot be further compressed. When the electric control valve 16 is opened, the compressed gas in the sliding sleeve 14 enters the gas storage chamber 17, enabling relative displacement to continue between the sliding rod 13 and the sliding sleeve 14, that is, the elastic buffer arc plate 12 can be further compressed, causing it to undergo elastic deformation and generating a stronger buffer support effect.

[0042] The working mode of the high-temperature superconducting rotor magnet radial support device will be specifically explained below. When the acting force is small, the acting force is generated on the bottom mounting cross plate 4 through the abutting block 3, causing the telescopic rod 6 and the buffer gasket 7 to be compressed. The buffer gasket 7 undergoes elastic deformation, and the buffer gasket 7 has the characteristic of restoring deformation. Therefore, a reverse acting force will be generated to form a first-level buffer support effect. When the acting force is large, after the bottom abutting rod 5 and the top abutting rod 8 abut, the acting force can cause the elastic buffer arc plate 12 to undergo elastic deformation, thereby forming a second-level support buffer effect. At the same time, the bottom plate 10 and the top plate 11 approach each other, and the sliding rod 13 and the piston plate 15 slide along the inner wall of the sliding sleeve 14 to compress the gas inside the sliding sleeve 14 until no relative displacement can occur between the sliding rod 13, the piston plate 15 and the sliding sleeve 14. At this time, the second-level support buffer effect reaches the strongest. When the acting force further increases, when the piston plate 15 drives the power contact 21 to move along the inner wall of the sliding sleeve 14 and abuts against the connecting contact 22, the circuit between the electric control valve 16 and the power storage device 18 is connected, causing the electric control valve 16 to remain open. The compressed gas in the sliding sleeve 14 enters the gas storage chamber 17 through the air holes, enabling the sliding rod 13 and the piston plate 15 to continue sliding along the inner wall of the sliding sleeve 14, causing the elastic buffer arc plate 12 to be further compressed, undergo greater deformation, and generate a stronger reverse acting force. At this time, it is the third-level support buffer effect.

Claims

1. A high-temperature superconducting rotor magnet radial support device, comprising a rotor housing (1), wherein a rotor body (2) is fixedly connected to the interior of the rotor housing (1), and characterized in that: A plurality of abutment blocks (3) are movably connected to the outer surface of the rotor body (2); the concave surface of the abutment blocks (3) fits the outer curve of the rotor body (2); and the plurality of abutment blocks (3) are evenly distributed about the circumference of the rotor body (2); A graded buffer mechanism is provided between each of the abutment blocks (3) and the inner wall of the rotor housing (1), and the graded buffer mechanism comprises a primary buffer component and a secondary buffer component; The primary buffer assembly comprises a bottom mounting cross plate (4) fixedly connected to the abutment block (3); a telescopic rod (6) is fixedly connected to the bottom mounting cross plate (4); the other end of the telescopic rod (6) is fixedly connected to the secondary buffer assembly via a top mounting cross plate (9); and a buffer gasket (7) is sleeved on the outer surface of the telescopic rod (6).

2. A high temperature superconducting rotor magnet radial support device according to claim 1, characterized in that: A bottom abutment rod (5) is fixedly connected to the bottom mounting transverse plate (4), and a top abutment rod (8) is fixedly connected to the top mounting transverse plate (9). The bottom abutment rod (5) and the top abutment rod (8) are arranged in alignment.

3. A high temperature superconducting rotor magnet radial support device according to claim 2, characterized in that: The secondary buffer assembly comprises a bottom plate (10) fixedly connected to a top mounting horizontal plate (9), an elastic buffer arc plate (12) fixedly connected to the outer surface of the bottom plate (10), and a top plate (11) fixedly connected to the inner side of the top end of the elastic buffer arc plate (12).

4. A high temperature superconducting rotor magnet radial support device according to claim 3, characterized in that: The force applied to the elastic buffer arc plate (12) when it undergoes elastic deformation is greater than the force applied to the buffer gasket (7) when it is compressed when the bottom abutting rod (5) and the top abutting rod (8) are in abutment with each other.

5. The high temperature superconducting rotor magnet radial support device according to claim 3, characterized in that: A sliding rod (13) is fixedly connected to the inner wall of the bottom plate (10), one end of the sliding rod (13) is fixedly connected to a piston plate (15), and a sliding sleeve (14) is movably connected to the outside of the sliding rod (13) and the piston plate (15), and one end of the sliding sleeve (14) is fixedly connected to the inner wall of the top plate (11).

6. A high temperature superconducting rotor magnet radial support device according to claim 5, characterized in that: The top plate (11) and the sliding sleeve (14) are provided with air holes, in which an electric control valve (16) is installed, and an air storage bin (17) is fixedly connected to the outer surface of the top plate (11), the air hole is communicated with the interior of the air storage bin (17), and the top of the air storage bin (17) is fixedly connected to the inner wall of the rotor housing (1).

7. A high temperature superconducting rotor magnet radial support device according to claim 6, characterized in that: The electric control valve (16) is electrically connected to two valve wires (23) on the outside, and one end of each valve wire (23) is electrically connected to a connecting contact (22), and the connecting contact (22) is fixedly connected to the inner wall of the sliding sleeve (14). The interior of the sliding rod (13) is fixedly connected to a power storage device (18), and the power storage device (18) is electrically connected to a positive wire (19) and a negative wire (20). One end of the positive wire (19) and the negative wire (20) are electrically connected to a power contact (21), and the power contact (21) is fixedly connected to the piston plate (15). The piston plate (15) and the power contact (21) slide along the inner wall of the sliding sleeve (14).

8. A high temperature superconducting rotor magnet radial support device according to claim 7, characterized in that: When the piston plate (15) slides along the inner wall of the sliding sleeve (14) and does not abut against the connecting contact (22), the gas inside the sliding sleeve (14) is compressed, and relative displacement between the sliding rod (13) and the sliding sleeve (14) cannot continue, that is, the elastic buffer arc plate (12) cannot continue to be compressed. When the electric control valve (16) is opened, the compressed gas in the sliding sleeve (14) enters the gas storage bin (17), so that relative displacement between the sliding rod (13) and the sliding sleeve (14) continues, that is, the elastic buffer arc plate (12) is continuously compressed, causing it to undergo elastic deformation.

9. A high temperature superconducting rotor magnet radial support device according to claim 1, characterized in that: The rotor housing (1) is made of Dewar material.

10. A high temperature superconducting rotor magnet radial support device according to claim 2, characterized in that: The thickness of the plurality of buffer gaskets (7) is the same as the distance between the bottom mounting transverse plate (4) and the top mounting transverse plate (9).

11. A high temperature superconducting rotor magnet radial support device according to claim 1, characterized in that: The buffer gasket (7) is made of rubber, silicone or polyurethane.

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