Special vacuum isolating valve in continuous preparation of high-temperature superconducting strip

Abstract

The utility model belongs to the technical field of vacuum isolating valves, and particularly relates to a special vacuum isolating valve in continuous preparation of high-temperature superconductive strips, which comprises an unwinding chamber, a winding chamber and a vacuum heating chamber, and the unwinding chamber and the winding chamber are respectively communicated with two ends of the vacuum heating chamber through two strip channels. The two strip channels are respectively provided with a vacuum isolation valve unit, a superconducting strip is installed in the unwinding chamber and enters the winding chamber through the vacuum heating chamber, each vacuum isolation valve unit comprises an upper shell, and the front side and the rear side of each upper shell are respectively provided with a material guide through groove communicated with the corresponding strip channel. According to the utility model, the sealing performance is better when the communication between the unwinding chamber and the vacuum heating chamber and the communication between the winding chamber and the vacuum heating chamber are cut off; and when the vacuum heating chamber is kept in a vacuum state and a process atmosphere balance state, the superconducting strip can be quickly reloaded in the unwinding chamber and the winding chamber.

Description

Technical Field

[0001] The utility model belongs to the technical field of vacuum isolation valves, and in particular relates to a special vacuum isolation valve in the continuous preparation of high-temperature superconducting strips. Background Art

[0002] During the continuous high-temperature crystallization process of superconducting tapes, the winding and unwinding chambers and the vacuum heating chamber are connected and are all in a vacuum state. After making a roll of tape, the vacuum needs to be broken and a new roll needs to be replaced. However, the high-temperature furnace chamber needs to be broken to normal pressure, which requires destroying the balance of the process atmosphere and cooling down. After loading, the temperature needs to be raised again and the process atmosphere needs to be balanced, which greatly increases the process preparation time and results in a longer time for changing materials. Utility Model Content

[0003] The utility model aims to provide a special vacuum isolation valve for continuous preparation of high-temperature superconducting tapes, which can have good sealing performance when isolating the connection between an unwinding chamber and a vacuum heating chamber and the connection between a winding chamber and a vacuum heating chamber, and can quickly replace the superconducting tapes in the unwinding chamber and the winding chamber when the vacuum heating chamber maintains a vacuum and a process atmosphere balance state.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A special vacuum isolation valve for continuous preparation of high-temperature superconducting tape comprises an unwinding chamber, a winding chamber and a vacuum heating chamber, wherein the unwinding chamber and the winding chamber are respectively connected to the two ends of the vacuum heating chamber through two strip channels, and vacuum isolation valve units are installed on the two strip channels. A superconducting tape is installed inside the unwinding chamber, and the superconducting tape enters the interior of the winding chamber through the vacuum heating chamber. The vacuum isolation valve unit comprises an upper shell, and the front and rear sides of the upper shell are both provided with material guide grooves connected to the strip channels. A storage shell connected to the upper shell is fixedly connected to the outer side of the upper shell, and an electric push rod is installed on the storage shell. The output end of the electric push rod is fixedly connected to a valve core plate located inside the storage shell, and the electric push rod can drive the valve core plate to move to the interior of the upper shell, and the edge of the valve core plate is provided with a sealing edge, and the sealing edge can expand and deform outward.

[0006] Furthermore, the sealing edge is an elastic edge bag fixedly connected to the edge of the valve core plate, and the elastic edge bag is filled with an adjustable amount of filling medium.

[0007] Furthermore, the filling medium is a fluid or a powdered solid, the valve core plate includes a valve core shell, the filling medium is filled inside the valve core shell, a medium pressurizing member for squeezing the filling medium is also installed inside the valve core shell, the edge of the valve core shell is connected to the elastic edge bag, and the edge of the valve core shell is also provided with a material guide groove connected to the elastic edge bag.

[0008] Furthermore, the medium pressure member includes two fixed baffle strips fixedly connected to the inside of the valve core shell and arranged in parallel, the two sides of the fixed baffle strips are respectively fixedly connected to the two side walls of the valve core shell, and two slidable sliding plates and a position adjustment member that drives the sliding plates to slide are installed between the two fixed baffle strips.

[0009] The technical effects achieved by the utility model are:

[0010] The utility model discloses a special vacuum isolation valve in the continuous preparation of high-temperature superconducting tapes, after sealing the tape channel once through the valve core plate, and then filling the gap between the inner wall of the upper shell, the valve core plate and the superconducting tape through the sealing edge, so as to complete the secondary sealing of the tape channel, thereby having good sealing performance when cutting off the connection between the unwinding chamber and the vacuum heating chamber and the connection between the winding chamber and the vacuum heating chamber, so that the vacuum heating chamber can quickly replace the superconducting tape in the unwinding chamber and the winding chamber while maintaining the vacuum and process atmosphere in a balanced state.

[0011] The utility model discloses a special vacuum isolation valve for continuous preparation of high-temperature superconducting strips. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a cut-away side view of the utility model;

[0014] Figure 3 It is a schematic diagram of the cutaway structure of the vacuum isolation valve unit of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the valve core plate of the utility model;

[0016] Figure 5 It is a partial structural schematic diagram of the elastic side bag of the utility model;

[0017] Figure 6 It is a side view of the cutaway structure of the valve core plate of the utility model;

[0018] Figure 7 It is a structural schematic diagram of the sliding plate of the utility model.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. Unwinding chamber; 2. Rewinding chamber; 3. Vacuum heating chamber; 4. Superconducting tape; 5. Tape channel; 6. Vacuum isolation valve unit; 7. Upper shell; 8. Storage shell; 9. Electric push rod; 10. Valve core plate; 11. Sealing edge; 12. Elastic edge bag; 13. Elastic pad; 14. Shape limiting wire mesh; 15. Valve core shell; 16. Material guide trough; 17. Transmission motor; 18. Fixed baffle strip; 19. Sliding plate; 20. Guide rail; 21. Meshing gear; 22. Meshing rack bar; 23. Middle plate; 24. Bevel plate. DETAILED DESCRIPTION

[0021] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.

[0022] like Figure 1-2 As shown, a special vacuum isolation valve in the continuous preparation of high-temperature superconducting tape comprises an unwinding chamber 1, a winding chamber 2 and a vacuum heating chamber 3. The unwinding chamber 1 and the winding chamber 2 are respectively connected to the two ends of the vacuum heating chamber 3 through two tape channels 5. The two tape channels 5 are both equipped with vacuum isolation valve units 6. A superconducting tape 4 is installed inside the unwinding chamber 1. The superconducting tape 4 enters the interior of the winding chamber 2 through the vacuum heating chamber 3.

[0023] During production, the unwinding chamber 1, the vacuum heating chamber 3 and the winding chamber 2 are in a connected state and are all in a vacuum state. The superconducting tape 4 in the unwinding chamber 1 passes through the vacuum heating chamber 3 and enters the winding chamber 2, and the superconducting tape 4 is processed through the vacuum heating chamber 3.

[0024] When the superconducting tape 4 is processed through the vacuum heating chamber 3 and needs to be rewound, the vacuum isolation valve unit 6 is closed to keep the vacuum heating chamber 3 in a vacuum state and a process atmosphere in a balanced state, thereby cutting off the connection between the unwinding chamber 1 and the vacuum heating chamber 3 and the connection between the rewinding chamber 2 and the vacuum heating chamber 3, so that the unwinding chamber 1 and the rewinding chamber 2 can be inflated to the atmospheric state, and the material can be quickly rewound, while the vacuum heating chamber 3 still maintains a vacuum heating state and a process atmosphere in a balanced state;

[0025] After the loading is completed, the unwinding chamber 1 and the winding chamber 2 are pre-evacuated by a small vacuum pump, and then the vacuum isolation valve unit 6 is opened to restore the connection between the unwinding chamber 1, the vacuum heating chamber 3 and the winding chamber 2, and then new product production can be carried out.

[0026] Among them, Figure 2-3As shown, the vacuum isolation valve unit 6 includes an upper shell 7, and the front and rear sides of the upper shell 7 are both provided with material guiding grooves connected to the strip channel 5. The superconducting strip 4 enters the upper shell 7 through the material guiding groove on the front side, and then is discharged through the material guiding groove. The outer side of the upper shell 7 is fixedly connected with a storage shell 8 connected to the upper shell 7, and an electric push rod 9 is installed on the storage shell 8. The output end of the electric push rod 9 is fixedly connected with a valve core plate 10 located inside the storage shell 8. The electric push rod 9 can drive the valve core plate 10 to move to the inside of the upper shell 7. The edge of the valve core plate 10 is provided with a sealing edge 11, and the sealing edge 11 can expand and deform outward to fill the gap between the inner wall of the upper shell 7, the valve core plate 10 and the superconducting strip 4, and the interior of the vacuum isolation valve unit 6 is divided into two isolated spaces by the valve core plate 10, which has good sealing performance.

[0027] Among them, Figure 3-4 As shown, the sealing edge 11 is an elastic edge bag 12 fixedly connected to the edge of the valve core plate 10. The interior of the elastic edge bag 12 is filled with an adjustable amount of filling medium. When the amount of filling medium increases, the elastic edge bag 12 can expand and increase its volume. When the amount of filling medium decreases, the elastic edge bag 12 can shrink and reduce its volume.

[0028] And, if Figure 4-5 As shown, the elastic side bag 12 includes an elastic pad 13 made of elastic material, the edge of the elastic pad 13 is connected to the edge of the valve core plate 10, and can be deformed freely. A shape limiting wire mesh 14 is provided on the inner side of the elastic pad 13, and the deformation of the elastic pad 13 after expansion can be limited by the shape limiting wire mesh 14;

[0029] The filling medium can be gas, fluid or powdered solid. Among them, since the powdered solid and fluid filled in the elastic side bag 12 can make the shape of the elastic side bag 12 more stable after shaping, the material of the filling medium is preferably powdered solid and fluid. At this time, in order to better feed and discharge the filling medium machine, the present technical solution chooses to improve the structure of the valve core plate 10. Specifically, the valve core plate 10 includes a valve core shell 15, and the filling medium is filled in the interior of the valve core shell 15. A medium pressurizing member for squeezing the filling medium is also installed in the interior of the valve core shell 15. The edge of the valve core shell 15 is connected to the elastic side bag 12. The edge of the valve core shell 15 is also provided with a material guide groove 16 connected to the elastic side bag 12. When the filling medium in the valve core shell 15 is squeezed, the filling medium will enter the interior of the elastic side bag 12 through the material guide groove 16.

[0030] like Figure 6As shown, the medium pressurizing member includes two fixed baffle strips 18 fixedly connected to the inside of the valve core shell 15 and arranged in parallel. The two sides of the fixed baffle strips 18 are respectively fixedly connected to the two side walls of the valve core shell 15. Two slidable sliding plates 19 and a position adjusting member that drives the sliding plates 19 to slide are installed between the two fixed baffle strips 18. The two sliding plates 19 are driven to move by the position adjusting member, so that the occupied space of the fixed baffle strips 18 and the sliding plates 19 combination inside the valve core shell 15 can be adjusted. When the occupied space is different, it can cause different extrusions on the filling medium inside the valve core shell 15.

[0031] And, if Figure 4 and Figure 6 As shown, the position adjustment member includes a transmission motor 17 fixedly connected to the middle position of the valve core housing 15 and a guide rail 20 fixedly connected to the inside of the valve core housing 15 and located between two fixed baffle strips 18. The output end of the transmission motor 17 is fixedly connected to a meshing gear 21 located in the middle position of the inside of the valve core housing 15. The insides of the two guide rails 20 are both slidably connected with a meshing rack bar 22 having the same moving direction as the sliding plate 19. The ends of the two meshing rack bars 22 are respectively fixedly connected to the two sliding plates 19, and the two meshing rack bars 22 are respectively located on both sides of the meshing gear 21. At this time, the meshing gear 21 is driven to rotate by the transmission motor 17, so that the meshing gear 21 can push the two meshing rack bars 22 to move in opposite directions, thereby driving the two sliding plates 19 to move.

[0032] Among them, Figure 6-7 As shown, the sliding plate 19 includes an intermediate plate 23 fixedly connected to the end of the gear rack 22, and both ends of the intermediate plate 23 are fixedly connected with bevel plates 24, and the end of the bevel plate 24 away from the intermediate plate 23 is inclined toward the direction close to the gear 21. At this time, through the shape setting of the sliding plate 19, when the two sliding plates 19 retract and reset, they can occupy a smaller space inside the valve core shell 15.

[0033] The working principle of the utility model is as follows: during production, the unwinding chamber 1, the vacuum heating chamber 3 and the winding chamber 2 are in a connected state and are all in a vacuum state. The superconducting tape 4 in the unwinding chamber 1 passes through the vacuum heating chamber 3 and enters the winding chamber 2, and the superconducting tape 4 is processed through the vacuum heating chamber 3;

[0034] When the superconducting tape 4 is processed in the vacuum heating chamber 3 and needs to be rewound, the electric push rod 9 drives the valve core plate 10 to move upward, so that the valve core plate 10 moves to the inside of the upper shell 7, and the upper part of the valve core plate 10 abuts against the superconducting tape 4 and the top of the upper shell 7, so as to seal the tape channel 5 once;

[0035] Then, the transmission motor 17 is started to drive the meshing gear 21 to rotate, so that the meshing gear 21 pushes the two sliding plates 19 to move in opposite directions through the two meshing rack bars 22, and the filling medium is squeezed through the sliding plate 19, so that the filling medium enters the elastic side bag 12 through the material guide groove 16, so that the elastic side bag 12 expands and deforms outwards, fills the gap between the inner wall of the upper shell 7, the valve core plate 10 and the superconducting tape 4, completes the secondary sealing of the tape channel 5, and separates the interior of the vacuum isolation valve unit 6 into two mutually isolated spaces through the valve core plate 10, cuts off the communication between the unwinding chamber 1 and the vacuum heating chamber 3, and the communication between the winding chamber 2 and the vacuum heating chamber 3, so that the vacuum heating chamber 3 maintains a vacuum and process atmosphere balance state, while the unwinding chamber 1 and the winding chamber 2 can be inflated to the atmospheric state, and the material is quickly replaced;

[0036] After the loading is completed, the unwinding chamber 1 and the winding chamber 2 are pre-evacuated by a small vacuum pump, and then the vacuum isolation valve unit 6 is opened to restore the connection between the unwinding chamber 1, the vacuum heating chamber 3 and the winding chamber 2, and then new product production can be carried out.

[0037] In summary, after the present technical solution seals the strip channel 5 once through the valve core plate 10, the sealing edge 11 fills the gap between the inner wall of the upper shell 7, the valve core plate 10 and the superconducting tape 4 to complete the secondary sealing of the strip channel 5, thereby having better sealing when cutting off the connection between the unwinding chamber 1 and the vacuum heating chamber 3 and the connection between the winding chamber 2 and the vacuum heating chamber 3, so that the vacuum heating chamber 3 can quickly replace the superconducting tape 4 in the unwinding chamber 1 and the winding chamber 2 while maintaining the vacuum and process atmosphere in a balanced state, without the need for frequent heating and cooling, thereby ensuring the life of the high-temperature crystallization furnace heater and the shielding layer.

[0038] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A special vacuum isolation valve for continuous preparation of high-temperature superconducting tape, comprising an unwinding chamber (1), a winding chamber (2) and a vacuum heating chamber (3), wherein the unwinding chamber (1) and the winding chamber (2) are respectively connected to the two ends of the vacuum heating chamber (3) through two tape channels (5), and a vacuum isolation valve unit (6) is installed on each of the two tape channels (5). A superconducting tape (4) is installed inside the unwinding chamber (1), and the superconducting tape (4) enters the interior of the winding chamber (2) through the vacuum heating chamber (3), and is characterized in that: The vacuum isolation valve unit (6) comprises an upper shell (7), the front and rear sides of the upper shell (7) are both provided with material guide grooves connected to the strip channel (5), the outer side of the upper shell (7) is fixedly connected to a storage shell (8) connected to the upper shell (7), an electric push rod (9) is installed on the storage shell (8), the output end of the electric push rod (9) is fixedly connected to a valve core plate (10) located inside the storage shell (8), the electric push rod (9) can drive the valve core plate (10) to move to the inside of the upper shell (7), and the edge of the valve core plate (10) is provided with a sealing edge (11), and the sealing edge (11) can expand and deform outward.

2. The special vacuum isolation valve for continuous production of high-temperature superconducting tape according to claim 1, characterized in that: The sealing edge (11) is an elastic edge bag (12) fixedly connected to the edge of the valve core plate (10), and the elastic edge bag (12) is filled with an adjustable amount of filling medium.

3. The special vacuum isolation valve for continuous production of high-temperature superconducting tape according to claim 2, characterized in that: The elastic side bag (12) comprises an elastic pad (13) made of an elastic material, the edge of the elastic pad (13) is connected to the edge of the valve core plate (10), and a shape limiting wire mesh (14) is arranged on the inner side of the elastic pad (13).

4. The special vacuum isolation valve for continuous production of high-temperature superconducting tape according to claim 2, characterized in that: The filling medium is any one of gas, fluid and powdered solid.

5. The special vacuum isolation valve for continuous production of high-temperature superconducting tape according to claim 2, characterized in that: The filling medium is a fluid or a powdered solid. The valve core plate (10) comprises a valve core shell (15). The filling medium is filled in the interior of the valve core shell (15). A medium pressurizing member for squeezing the filling medium is also installed in the interior of the valve core shell (15). The edge of the valve core shell (15) is connected to the elastic edge bag (12). The edge of the valve core shell (15) is also provided with a material guide groove (16) connected to the elastic edge bag (12).

6. The special vacuum isolation valve for continuous production of high-temperature superconducting tape according to claim 5, characterized in that: The medium pressurizing component comprises two fixed baffle strips (18) fixedly connected to the inside of the valve core housing (15) and arranged in parallel, the two sides of the fixed baffle strips (18) are respectively fixedly connected to the two side walls of the valve core housing (15), and two slidable sliding plates (19) and a position adjustment component that drives the sliding plates (19) to slide are installed between the two fixed baffle strips (18).

7. The special vacuum isolation valve for continuous production of high-temperature superconducting tape according to claim 6, characterized in that: The position adjustment member comprises a transmission motor (17) fixedly connected to the middle position of the valve core housing (15) and a guide rail (20) fixedly connected to the inside of the valve core housing (15) and located between two fixed baffle strips (18); the output end of the transmission motor (17) is fixedly connected to a meshing gear (21) located in the middle position of the inside of the valve core housing (15); the insides of the two guide rails (20) are both slidably connected to meshing gears (22) with the same moving direction as the sliding plate (19); the ends of the two meshing gears (22) are respectively fixedly connected to the two sliding plates (19), and the two meshing gears (22) are respectively located on both sides of the meshing gear (21).

8. The special vacuum isolation valve for continuous production of high-temperature superconducting tape according to claim 7, characterized in that: The sliding plate (19) comprises an intermediate plate (23) fixedly connected to the end of the meshing rack (22), and both ends of the intermediate plate (23) are fixedly connected to bevel plates (24), and the end of the bevel plate (24) away from the intermediate plate (23) is inclined toward a direction close to the meshing gear (21).

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