Superconducting magnet current lead pulling-out device

Abstract

The utility model relates to the technical field of superconducting magnet equipment, in particular to a superconducting magnet current lead pulling-out device which comprises a horizontally-arranged positive and negative tooth bidirectional lead screw, a handle is fixedly installed at one end of the positive and negative tooth bidirectional lead screw, and symmetrically-arranged adjusting seats are installed at the two ends of the positive and negative tooth bidirectional lead screw in a threaded mode. A top seat is hinged between the upper parts of the two adjusting seats through two upper support arms with the same length, a base is hinged between the lower parts of the two adjusting seats through two lower support arms with the same length, the top seat is used for supporting a junction box of a current lead from the lower part, and the base is used for pressing a current lead insertion port seat in a superconducting magnet from the upper part; the handle is rotated to drive the positive and negative tooth bidirectional lead screw to rotate, the distance between the two adjusting seats is reduced, the distance between the top seat and the bottom seat is increased, and the current lead plug is driven to be pulled out of the current lead seat. Use is flexible and convenient, the current lead is pulled out smoothly and quickly, the pulling-out speed is accurately controlled, and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of superconducting magnet equipment, in particular to a superconducting magnet current lead extraction device. Background Art

[0002] The excitation of a magnetic resonance superconducting magnet is a very important step in the process of verifying a magnetic resonance superconducting magnet. When the superconducting magnet is excited, the current lead plug needs to be inserted into the current lead socket so that the current lead plug and the current lead socket can be connected in the circuit. Then the current outside the superconducting magnet passes through the current lead plug and the current lead socket of the current lead into the superconducting magnet coil. Whether the current lead is pulled out smoothly plays a very important role in the magnetic resonance superconducting magnet excitation process. Generally, the current lead of the existing magnetic resonance superconducting magnet is pulled out directly by hand during the pulling out process, which is inconvenient to operate. It is often difficult to pull out the current lead, and even the contact surface of the current lead socket and the current lead plug is frozen, making it impossible to pull out the current lead.

[0003] The following aspects will affect the removal of the current lead of the magnetic resonance superconducting magnet: ① It is inconvenient and difficult to remove the current lead directly by hand. It needs to be pulled out with an instant impact force. The magnetic resonance superconducting magnet is prone to vibration, which will face the risk of superconducting magnet quenching. In addition, the removal process takes a long time, causing a large amount of low-temperature liquid helium to volatilize. It will also face the risk of superconducting magnet quenching, thereby causing a large amount of liquid helium to volatilize. In addition, the physical fitness of the person removing the lead must be good, especially the upper limb strength must be sufficient. ② The current lead cannot be pulled out due to ice on the contact surface between the current lead plug and the current lead holder. If the current lead needs to be pulled out after the excitation current reaches the target but cannot be pulled out, in order to prevent the superconducting magnet from quenching due to the inability to pull out the current lead for a long time, the superconducting magnet that is about to complete the excitation has to be demagnetized, and then the current lead can be pulled out after the superconducting magnet is reheated, and then the excitation is re-cold, which not only causes the volatilization of the cryogenic liquid helium but also greatly increases the time and personnel costs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a superconducting magnet current lead extraction device which will not cause vibration of the magnetic resonance superconducting magnet due to impact force during the extraction process, will not cause damage to the magnetic resonance superconducting magnet and the current lead, can extract the current lead smoothly and quickly, save extraction time, can accurately control the extraction speed, improve production efficiency, reduce the tediousness and time-consuming manual operation, can complete the extraction work in a short time, and avoid the situation that the contact surface of the current lead seat and the current lead plug cannot be extracted due to ice.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a superconducting magnet current lead extraction device, comprising a horizontally arranged positive and negative bidirectional screw rod, one end of the positive and negative bidirectional screw rod is fixedly installed with a handle, both ends of the positive and negative bidirectional screw rod are threadedly installed with symmetrically arranged adjustment seats, a top seat is hingedly installed between the upper parts of the two adjustment seats through two upper support arms of the same length, and a base is hingedly installed between the lower parts of the two adjustment seats through two lower support arms of the same length, the top seat is used to support the terminal box of the current lead from below, and the base is used to press the current lead insertion port seat in the superconducting magnet from above; the positive and negative bidirectional screw rod is driven to rotate by rotating the handle, the distance between the two adjustment seats is reduced, the distance between the top seat and the base is increased, and the current lead plug is driven to be pulled out from the current lead seat.

[0006] As a preferred technical solution, a threaded through hole compatible with the positive and negative bidirectional screw is provided on the adjustment seat, an upper arm mounting seat is provided on the upper part of the adjustment seat, and a lower arm mounting seat is provided on the lower part of the adjustment seat. An upper hinge shaft is fixedly installed on the upper arm mounting seat, and a lower hinge shaft is fixedly installed on the lower arm mounting seat.

[0007] As a preferred technical solution, the top seat includes an L-shaped horizontal part and a vertical part, the horizontal part is provided with an upper limit groove, and the vertical part is fixedly installed with two top seat hinge shafts, and the upper support arm is hingedly installed between the upper hinge shaft and the top seat hinge shaft adjacent to it.

[0008] As a preferred technical solution, the upper limit groove is a semicircular groove, the diameter of the upper limit groove is ≥ the outer diameter of the current lead, and the diameter of the upper limit groove is < the outer diameter of the junction box.

[0009] As a preferred technical solution, the base includes an L-shaped horizontal part and a vertical part, the horizontal part is provided with a lower limit groove, and two base hinge shafts are fixedly installed on the vertical part, and the lower support arm is hingedly installed between the lower hinge shaft and the base hinge shaft adjacent to it.

[0010] As a preferred technical solution, the lower limit groove is a semicircular groove, the diameter of the lower limit groove is ≥ the outer diameter of the current lead, and the diameter of the lower limit groove is < the outer diameter of the current lead insertion seat.

[0011] As a preferred technical solution, the forward and reverse bidirectional screw rod, the handle, the adjustment seat, the top seat, the base, the upper support arm and the lower support arm are all made of non-magnetic materials.

[0012] As a preferred technical solution, the handle is a foldable handle.

[0013] Due to the adoption of the above technical scheme, a superconducting magnet current lead extraction device comprises a horizontally arranged positive and negative bidirectional screw rod, one end of which is fixedly mounted with a handle, and both ends of the positive and negative bidirectional screw rod are threadedly mounted with symmetrically arranged adjustment seats, a top seat is hingedly mounted between the upper parts of the two adjustment seats through two upper support arms of the same length, and a base is hingedly mounted between the lower parts of the two adjustment seats through two lower support arms of the same length, the top seat is used to support the junction box of the current lead from below, and the base is used to press the current lead insertion port seat in the superconducting magnet from above; the positive and negative bidirectional screw rod is driven to rotate by turning the handle, the distance between the two adjustment seats is reduced, the distance between the top seat and the base is increased, and the current lead plug is driven to be pulled out of the current lead seat; the beneficial effects of the utility model are: the device is only used when pulling out the current lead, and does not need to be used in other processes, and is used When the top seat is upward to hold the junction box, the base is downward to press the current lead insertion seat, and the positive and negative two-way screw rod is rotated. The two adjustment seats will move toward the middle with the thread rotation, and the two upper arms will drive the top seat to move upward, and the two lower arms will drive the base to move downward. The junction box and the current lead insertion seat are separated from each other. The lower part of the junction box is connected with a current lead plug through the current lead, and the current lead seat is installed under the current lead insertion seat, thereby realizing the separation of the current lead plug and the current lead seat. The extraction process will not affect the excitation process of the magnetic resonance superconducting magnet. In the process of pulling out the current lead, there will be no impact force causing the magnetic resonance superconducting magnet to vibrate, and the magnetic resonance superconducting magnet and the current lead will not be damaged. The current lead is pulled out smoothly and quickly, and no time is wasted in the extraction process, which reduces unnecessary losses and can accurately control the extraction speed of the current lead. The production efficiency is improved, the tediousness and time-consuming of manual operation are reduced, and the extraction work can be completed in a short time. During the extraction process, the utility model can ensure that the lead wire is subjected to uniform tension, avoiding deformation or damage caused by uneven stress distribution. The operation process is relatively safe, reducing the safety risk of operators and the incidence of industrial accidents. The utility model is flexible and convenient to use, has certain versatility, and can adapt to the extraction needs of current leads of different specifications and materials. By replacing different molds of the top seat and the base, it can easily adapt to the extraction tasks of current leads of different sizes and shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0015] Figure 1 This is one of the structural schematic diagrams of a superconducting magnet current lead extraction device of the utility model;

[0016] Figure 2 This is the second use state diagram of a superconducting magnet current lead extraction device of the utility model;

[0017] Figure 3 This is the use state of a superconducting magnet current lead extraction device of the utility model. Figure 1 ;

[0018] Figure 4 This is the use state of a superconducting magnet current lead extraction device of the utility model. Figure 2 ;

[0019] In the figure: 1-positive and negative bidirectional screw rod; 2-handle; 3-adjustment seat; 4-upper support arm; 5-lower support arm; 6-top seat; 61-upper limit slot; 62-top seat hinge axis; 7-base; 71-lower limit slot; 72-base hinge axis; 8-junction box; 9-current lead insertion port seat; 10-upper support arm mounting seat; 11-lower support arm mounting seat; 12-upper hinge axis; 13-lower hinge axis. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Needless to say, those skilled in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0021] like Figures 1 to 4As shown together, a superconducting magnet current lead extraction device comprises a horizontally arranged positive and negative bidirectional screw rod 1, one end of which is fixedly mounted with a handle 2, and both ends of the positive and negative bidirectional screw rod 1 are threadedly mounted with symmetrically arranged adjustment seats 3, a top seat 6 is hingedly mounted between the upper parts of the two adjustment seats 3 through two upper support arms 4 of the same length, and a base 7 is hingedly mounted between the lower parts of the two adjustment seats 3 through two lower support arms 5 of the same length, the top seat 6 is used to support the terminal box 8 of the current lead from below, and the base 7 is used to press the current lead insertion port seat 9 in the superconducting magnet from above; the positive and negative bidirectional screw rod 1 is driven to rotate by rotating the handle 2, the distance between the two adjustment seats 3 is reduced, the distance between the top seat 6 and the base 7 is increased, and the current lead plug is driven to be pulled out of the current lead seat; this device is only used when pulling out the current lead, and does not need to be used in other processes. When in use, the top seat 6 is moved to the bottom. The junction box 8 is supported on the upper side, the base 7 presses the current lead insertion seat 9 downward, and the positive and negative tooth bidirectional screw rod 1 is rotated. The two adjustment seats 3 will move toward the middle along with the thread rotation, and the two upper support arms 4 will drive the top seat 6 to move upward, and the two lower support arms 5 will drive the base 7 to move downward, and the junction box 8 and the current lead insertion seat 9 will move away from each other. The lower part of the junction box 8 is connected with a current lead plug through the current lead, and the current lead seat is installed below the current lead insertion seat 9, thereby realizing the separation of the current lead plug and the current lead seat, and the extraction process will not affect the excitation process of the magnetic resonance superconducting magnet, and there will be no impact force in the extraction process of the current lead to cause the magnetic resonance superconducting magnet to vibrate, and the magnetic resonance superconducting magnet and the current lead will not be damaged. The current lead is extracted smoothly and quickly, and no waste of time in the extraction process is caused, and unnecessary losses are reduced, and the extraction speed of the current lead can be accurately controlled. The production efficiency is improved, the tediousness and time-consuming of manual operation are reduced, and the extraction work can be completed in a short time. During the extraction process, the utility model can ensure that the lead wire is subjected to uniform tension, avoiding deformation or damage caused by uneven stress distribution. The operation process is relatively safe, reducing the safety risk of operators and the incidence of industrial accidents. The utility model is flexible and convenient to use, has a certain degree of versatility, and can adapt to the extraction requirements of current leads of different specifications and materials. By replacing different molds of the top seat 6 and the base 7, it can easily adapt to the extraction tasks of current leads of different sizes and shapes.

[0022] like Figure 1 to Figure 2As shown together, a threaded through hole compatible with the positive and negative threaded bidirectional screw rod 1 is provided on the adjustment seat 3, an upper arm mounting seat 10 is provided on the upper part of the adjustment seat 3, and a lower arm mounting seat 11 is provided on the lower part of the adjustment seat 3. An upper hinge shaft 12 is fixedly installed on the upper arm mounting seat 10, and a lower hinge shaft 13 is fixedly installed on the lower arm mounting seat 11. The two ends of the positive and negative threaded bidirectional screw rod 1 pass through the threaded through holes on the two adjustment seats 3 respectively, and are threadedly connected with the threaded through holes. When the positive and negative threaded bidirectional screw rod 1 rotates, the two adjustment seats 3 will move synchronously on the positive and negative threaded bidirectional screw rod 1 under the action of the thread. The upper arm mounting seat 10 is used to provide a platform for the installation of the upper arm 4, and one end of the upper arm 4 is hingedly installed on the upper hinge shaft 12. The lower arm mounting seat 11 is used to provide a platform for the installation of the lower arm 5, and one end of the lower arm 5 is hingedly installed on the lower hinge shaft 13.

[0023] like Figure 1 to Figure 2 As shown together, the top seat 6 includes an L-shaped horizontal portion and a vertical portion, the horizontal portion is provided with an upper limit slot 61, the vertical portion is fixedly provided with two top seat hinge shafts, and the upper support arm 4 is hingedly installed between the upper hinge shaft 12 and the top seat hinge shaft adjacent thereto. The horizontal portion and the vertical portion preferably have an angle of 90°, and the shape of the upper limit slot 61 is not limited, and can be rectangular or semicircular, as long as it is sufficient to support and lift the junction box 8 upward.

[0024] like Figure 1 to Figure 2 As shown together, the upper limit groove 61 is a semicircular groove, the diameter of the upper limit groove 61 is ≥ the outer diameter of the current lead, and the diameter of the upper limit groove 61 is < the outer diameter of the junction box 8. The upper limit groove 61 is preferably a semicircular groove, and the diameter of the semicircular groove is preferably consistent with the outer diameter of the current lead, so that there is no gap when the upper limit groove 61 contacts the current lead, and when the top seat 6 moves upward, there will be no axial shaking between the top seat 6 and the current lead, which can better ensure the stability of the current lead when it is pulled out. Of course, when the outer shell of the current lead is other shapes, the upper limit groove 61 should be changed according to its shape. The tighter the engagement between the two, the better, and it is less likely to cause axial shaking when the top seat 6 moves upward.

[0025] like Figure 1 to Figure 2 As shown together, the base 7 includes an L-shaped horizontal portion and a vertical portion, the horizontal portion is provided with a lower limit slot 71, the vertical portion is fixedly mounted with two base hinge shafts 72, and the lower arm 5 is hingedly mounted between the lower hinge shaft 13 and the adjacent base hinge shaft 72. The horizontal portion and the vertical portion preferably have an angle of 90°, and the shape of the lower limit slot 71 is not limited, and can be rectangular or semicircular, as long as the current lead insertion seat 9 is pressed downward.

[0026] like Figure 1 to Figure 2As shown in common, the lower limit groove 71 is a semicircular groove, and the diameter of the lower limit groove 71 is ≥ the outer diameter of the current lead, and the diameter of the lower limit groove 71 is < the outer diameter of the current lead insertion port seat 9. The lower limit groove 71 is preferably a semicircular groove, and the diameter of the semicircular groove is preferably consistent with the outer diameter of the current lead, so that there will be no gap when the lower limit groove 71 contacts the current lead, and when the base 7 moves downward, there will be no axial shaking between the base 7 and the current lead, which can better ensure the stability of the current lead when it is pulled out. Of course, when the outer shell of the current lead is other shapes, the lower limit groove 71 should be changed according to its appearance. The tighter the engagement between the two, the better, and it is less likely to cause axial shaking when the base 7 moves downward. Figure 1 to Figure 2 As shown in the figure, the positive and negative bidirectional screw rod 1, the handle 2, the adjustment seat 3, the top seat 6, the base 7, the upper arm 4 and the lower arm 5 are all made of non-magnetic materials. Each component of the utility model is made of non-magnetic materials, so that it will not be affected by the strong magnetic field, and will not affect the superconducting magnet and the strong magnetic field generated by the magnet.

[0027] like Figure 1 to Figure 2 As shown in the figure, the handle 2 is a foldable handle. The foldable handle is convenient for storage and can be folded up to reduce storage space when the utility model is not used.

[0028] The utility model has the following advantages:

[0029] The top seat 6 of the utility model can fully match the bottom surface of the junction box 8 at the top of the current lead, and the base 7 can fully match the support surface at the magnet current lead insertion port seat 9. When the top seat 6 and the base 7 are separated from each other, the current lead plug is driven to be pulled out from the current lead seat. The pulling process will not affect the excitation process of the superconducting magnet, the excitation process of the magnetic resonance superconducting magnet, and the impact force will not cause the magnetic resonance superconducting magnet to vibrate. The magnetic resonance superconducting magnet and the current lead will not be damaged. The current lead is pulled out smoothly and quickly, and the time of the pulling process will not be wasted. The pulling speed of the current lead can be accurately controlled. The production efficiency is improved, the tediousness and time-consuming of manual operation are reduced, and the pulling work can be completed in a short time. During the pulling process, the tooling can ensure that the lead is subjected to uniform tension, avoiding deformation or damage caused by uneven stress distribution. The operation process is relatively safe, reducing the safety risk of the operator and reducing the incidence of industrial accidents. It has certain versatility and flexibility, and can adapt to the current lead pulling manufacturing needs of different specifications and materials. By replacing different molds of the top seat 6 and the base 7, it is easy to adapt to lead extraction tasks of different sizes and shapes.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A superconducting magnet current lead extraction device, characterized in that: The invention comprises a horizontally arranged forward and reverse bidirectional screw rod (1), one end of which is fixedly mounted with a handle (2), and both ends of the forward and reverse bidirectional screw rod (1) are threadedly mounted with symmetrically arranged adjustment seats (3), a top seat (6) is hingedly mounted between the upper parts of the two adjustment seats (3) via two upper arms (4) of the same length, and a base (7) is hingedly mounted between the lower parts of the two adjustment seats (3) via two lower arms (5) of the same length, the top seat (6) is used to support a junction box (8) of a current lead from below, and the base (7) is used to press a current lead insertion port seat (9) in a superconducting magnet from above; by rotating the handle (2), the forward and reverse bidirectional screw rod (1) is driven to rotate, the distance between the two adjustment seats (3) is reduced, the distance between the top seat (6) and the base (7) is increased, and the current lead plug is driven to be pulled out of the current lead seat.

2. A superconducting magnet current lead extraction device as claimed in claim 1, characterized in that: The adjusting seat (3) is provided with a threaded through hole adapted to the forward and reverse bidirectional screw rod (1); an upper arm mounting seat (10) is provided at the upper portion of the adjusting seat (3); a lower arm mounting seat (11) is provided at the lower portion of the adjusting seat (3); an upper hinge shaft (12) is fixedly mounted on the upper arm mounting seat (10); and a lower hinge shaft (13) is fixedly mounted on the lower arm mounting seat (11).

3. A superconducting magnet current lead extraction device as claimed in claim 2, characterized in that: The top seat (6) comprises an L-shaped horizontal portion and a vertical portion which are integrally arranged. The horizontal portion is provided with an upper limit slot (61). The vertical portion is fixedly mounted with two top seat hinge shafts (62). The upper support arm (4) is hingedly mounted between the upper hinge shaft (12) and the top seat hinge shaft (62) adjacent thereto.

4. A superconducting magnet current lead extraction device as claimed in claim 3, characterized in that: The upper limit groove (61) is a semicircular groove, the diameter of the upper limit groove (61) is greater than or equal to the outer diameter of the current lead, and the diameter of the upper limit groove (61) is less than the outer diameter of the junction box (8).

5. A superconducting magnet current lead extraction device as claimed in claim 2, characterized in that: The base (7) comprises an L-shaped horizontal portion and a vertical portion which are integrally arranged. The horizontal portion is provided with a lower limit groove (71). Two base hinge shafts (72) are fixedly mounted on the vertical portion. The lower support arm (5) is hingedly mounted between the lower hinge shaft (13) and the base hinge shaft (72) adjacent thereto.

6. A superconducting magnet current lead extraction device as claimed in claim 5, characterized in that: The lower limit groove (71) is a semicircular groove, the diameter of the lower limit groove (71) is greater than or equal to the outer diameter of the current lead, and the diameter of the lower limit groove (71) is less than the outer diameter of the current lead insertion seat (9).

7. A superconducting magnet current lead extraction device as claimed in claim 1, characterized in that: The forward and reverse bidirectional screw rod (1), the handle (2), the adjustment seat (3), the top seat (6), the base (7), the upper support arm (4) and the lower support arm (5) are all made of non-magnetic material.

8. A superconducting magnet current lead extraction device according to any one of claims 1 to 7, characterized in that: The handle (2) is a foldable handle.

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