A YBCO superconducting ring manufacturing device and process method

Abstract

The present invention discloses a YBCO superconducting ring manufacturing device and a process method, and belongs to the field of superconducting material manufacturing devices. The manufacturing device includes a precursor liquid recovery unit, a graphite heating unit, an atmosphere input unit, a precursor liquid diversion unit, a rotary heat treatment unit and a preparation furnace. The precursor liquid diversion unit is installed on the top of the preparation furnace, and is used to store the YBCO and buffer layer precursor liquid required for the YBCO superconducting ring. The rotary heat treatment unit is arranged in the preparation furnace, and is used to receive the precursor liquid and heat and crystallize the precursor liquid. The precursor liquid recovery unit is installed below the rotary heat treatment unit, and is used to recover the excess precursor liquid on the rotary heat treatment unit. The graphite heating unit is installed in the preparation furnace, and is used to maintain the stability of the heat treatment atmosphere inside the preparation furnace. The output end of the atmosphere input unit is arranged inside the preparation furnace, and is used to supply the preparation furnace with gas to maintain the stability of the reaction. The present invention provides a superconducting ring manufacturing device that is efficient, practical, material-saving, and has a controllable preparation environment.

Description

Technical Field

[0001] The invention belongs to the field of superconducting material manufacturing devices, in particular to a YBCO superconducting ring manufacturing device and a process method. Background Art

[0002] YBCO, also known as coated conductor, must be prepared on a metal substrate using thin film epitaxial preparation technology. The structure of YBCO superconducting tape includes four parts: metal substrate, buffer layer, superconducting layer and protective layer.

[0003] YBCO high-temperature superconducting tape has a layered structure. Although it has high tensile strength, its interlayer bonding strength is poor, and it is easy to produce interlayer peeling, which is its inherent defect. YBCO high-temperature superconducting magnets using ordinary winding and epoxy impregnation processes are prone to interlayer peeling forces on the surface of the YBCO tape due to the shrinkage differences of different materials inside the magnet at low temperatures, resulting in serious attenuation of the magnet's current flow characteristics, causing serious obstacles to the application of YBCO high-temperature superconducting magnets and seriously affecting electrical performance.

[0004] In view of the above problems, the problem of superconducting material delamination caused by axial magnetic field force can be solved by annular superconducting materials. Currently, there is no annular YBCO superconducting material preparation device. The present invention provides a set of buffer layer and superconducting layer integrated preparation device and preparation process for manufacturing superconducting rings. Summary of the invention

[0005] Purpose of the invention: To provide a YBCO superconducting ring manufacturing device and process method to solve the above problems existing in the prior art.

[0006] Technical solution: A YBCO superconducting ring manufacturing device includes a precursor liquid recovery unit, a graphite heating unit, an atmosphere input unit, a precursor liquid guide unit, a rotary heat treatment unit and a preparation furnace. The precursor liquid guide unit is installed on the top of the preparation furnace, and the output end extends into the preparation furnace, and is used to store YBCO and buffer layer precursor liquids required for the YBCO superconducting ring. The rotary heat treatment unit is arranged in the preparation furnace, and is used to receive the precursor liquid and heat and crystallize the precursor liquid. The precursor liquid recovery unit is installed below the rotary heat treatment unit, and is used to recover excess precursor liquid on the rotary heat treatment unit. The graphite heating unit is installed in the preparation furnace, and is used to maintain the stability of the heat treatment atmosphere inside the preparation furnace. The output end of the atmosphere input unit is arranged inside the preparation furnace, and is used to supply the preparation furnace with gas to maintain reaction stability.

[0007] Furthermore, the precursor liquid guiding unit includes a plurality of coating chambers for storing different types of precursor liquids. The precursor liquid guiding unit is movably installed on the preparation furnace, and the precursor liquid guiding unit is sealed and installed on the preparation furnace. The precursor liquid guiding unit supplies different levels of precursor liquid to the base tape, and realizes coating of superconducting rings or superconducting sheets by adjusting the position of the upper cover plate, thereby enriching the output types of the manufacturing device.

[0008] Furthermore, the rotary heat treatment unit includes a rotating device and a heating substrate. The rotating device is used to level the thickness of the precursor liquid. The heating substrate is installed on the rotating device and is used to heat the precursor liquid. The rotary heat treatment unit can rotate at a uniform speed to level the precursor liquid, and crystallize it by heating, thereby realizing the development of superconducting rings with different diameters.

[0009] Furthermore, the heating substrate includes a plate body and a clamp. The plate body is a disc structure. A plurality of recovery holes are provided on the edge of the plate body. The clamp is installed on the plate body for clamping the base tape. A rotating slot is provided at the bottom of the plate body. The rotating slot cooperates with the protrusion on the precursor liquid recovery unit to maintain the horizontal rotation of the plate body. The heating substrate can fix the base tape by the clamp, and the stability of the base tape during the horizontal rotation process is ensured by the cooperation between the rotating slot and the protrusion. The setting of the recovery holes is conducive to the discharge of excess precursor liquid.

[0010] Furthermore, the precursor liquid recovery unit includes a recovery tray and a recovery pipe group. The recovery tray is installed below the heating substrate, and the recovery pipe group is arranged outside the preparation furnace and connected to the recovery tray through a pipeline. The precursor liquid recovery unit recycles different types of precursor liquids, which is beneficial to material saving.

[0011] Furthermore, the preparation furnace is a closed structure, and the preparation furnace includes an upper cover plate and a furnace body, the upper cover plate is installed on the furnace body, and the precursor liquid guide unit and the atmosphere input unit are both installed on the upper cover plate; the closed preparation furnace provides a setting place for other units and provides a controllable research and development environment for the preparation of superconducting rings.

[0012] Based on a process method for using a YBCO superconducting ring manufacturing device, the process method includes the following steps:

[0013] Step 1: Place the ring-shaped or sheet-shaped base belt on the plate body and fix the base belt with a clamp;

[0014] Step 2: storing the precursor liquid involved in the preparation of the buffer layer and the superconducting layer in the precursor liquid guide unit, and adjusting the position of the precursor liquid guide unit on the upper cover plate;

[0015] Step 3: The precursor liquid guide unit drips the precursor liquid onto the surface of the base tape, and the rotating device spreads the precursor liquid onto the heated substrate by rotating;

[0016] Step 4: The precursor liquid recovery unit absorbs the excess precursor liquid received by the recovery plate from the recovery hole through the recovery tube group;

[0017] Step 5: The atmosphere input unit and the graphite heating unit work to provide a stable crystallization environment inside the preparation furnace;

[0018] Step 6: heating the substrate to heat the precursor liquid to crystallize the precursor liquid;

[0019] Step 7: Repeat steps 3 to 6, layer by layer coating of the precursor solution and crystallization until the texture of the buffer layer and the superconducting layer is formed.

[0020] Beneficial effects: The present invention provides a superconducting ring manufacturing device, in which a precursor liquid recovery unit intermittently outputs the precursor liquid required for preparing a buffer layer and a superconducting layer, thereby realizing integrated preparation of the buffer layer and the superconducting layer, with a continuous preparation process and high production efficiency; the manufacturing device realizes uniform coating and crystallization of each layer of precursor liquid through a rotating heat treatment unit that rotates at a uniform speed, thereby realizing the development of superconducting rings of different diameters, and being able to produce products of multiple specifications with strong practicality; the heating substrate directly heats the base tape, and the auxiliary heating with the graphite heating unit realizes effective control of the temperature during the preparation process, and the closed preparation furnace can prevent impurities from entering, and the superconducting ring preparation environment is stable and controllable; the precursor liquid recovery unit is set up to recycle materials, which is beneficial to the saving of raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the internal structure of the present invention.

[0022] Figure 2 The present invention Figure 1 Enlarged view of point A in the middle.

[0023] Figure 3 It is a half-sectional view of the heating substrate in the present invention.

[0024] Figure 4 It is a schematic diagram of the precursor liquid guiding unit in the present invention coating the superconducting sheet.

[0025] Figure 5 It is a schematic diagram of the precursor liquid guiding unit coating the superconducting ring in the present invention.

[0026] The accompanying drawings are marked as follows: 1. precursor liquid recovery unit; 11. recovery plate; 12. recovery tube group; 2. graphite heating unit; 3. atmosphere input unit; 4. base belt; 5. precursor liquid guide unit; 6. rotary heat treatment unit; 61. heating substrate; 62. rotating device; 63. plate body; 64. clamp; 65. rotating slot; 66. recovery hole; 7. preparation furnace; 71. upper cover plate; 72. furnace body. DETAILED DESCRIPTION

[0027] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0028] Embodiment 1:

[0029] like Figure 1-Figure 2 As shown, a YBCO superconducting ring manufacturing device includes a precursor liquid recovery unit 1, a graphite heating unit 2, an atmosphere input unit 3, a precursor liquid guide unit 5, a rotary heat treatment unit 6 and a preparation furnace 7. The precursor liquid guide unit 5 is installed on the top of the preparation furnace 7. The input end of the precursor liquid guide unit 5 is connected to the precursor liquid preparation device, and the output end extends into the preparation furnace 7 for storing YBCO and buffer layer precursor liquids required for the YBCO superconducting ring. The rotary heat treatment unit 6 is arranged in the preparation furnace 7 for receiving the precursor liquid and heating and crystallizing the precursor liquid. The precursor liquid recovery unit 1 is installed below the rotary heat treatment unit 6 for recovering excess precursor liquid on the rotary heat treatment unit 6. The graphite heating unit 2 is installed in the preparation furnace 7 for maintaining the stability of the heat treatment atmosphere inside the preparation furnace 7. The output end of the atmosphere input unit 3 is arranged inside the preparation furnace 7 for supplying gas to the preparation furnace 7 to maintain the stability of the reaction.

[0030] Among them, the precursor liquid guiding unit 5 includes a plurality of coating chambers for storing different types of precursor liquids. The precursor liquid guiding unit 5 is movably installed on the preparation furnace 7. The precursor liquid guiding unit 5 is sealed and installed on the preparation furnace 7. The precursor liquid guiding unit 5 supplies different levels of precursor liquid to the base tape 4, and realizes the coating of superconducting rings or superconducting sheets by adjusting the position of the upper cover plate 71, thereby enriching the output types of the manufacturing device.

[0031] The rotary heat treatment unit 6 includes a rotating device 62 and a heating substrate 61. The rotating device 62 is used to level the thickness of the precursor liquid. The heating substrate 61 is installed on the rotating device 62 and is used to heat the precursor liquid. The rotary heat treatment unit 6 can rotate at a constant speed to achieve the purpose of leveling the precursor liquid and crystallize it by heating, thereby realizing the development of superconducting rings of different diameters and being able to produce products of various specifications, with strong practicality.

[0032] like Figure 2 As shown, the heating substrate 61 includes a plate body 63 and a clamp 64. The plate body 63 is a disc structure. A plurality of recovery holes 66 are provided on the edge of the plate body 63. The clamp 64 is installed on the plate body 63 for clamping the base tape 4. A rotation slot 65 is provided at the bottom of the plate body 63. The rotation slot 65 cooperates with the protrusion on the precursor liquid recovery unit 1 to maintain the horizontal rotation of the plate body 63. The heating substrate 61 can fix the base tape 4 through the clamp 64, and the rotation slot 65 cooperates with the protrusion to ensure the stability of the base tape 4 during the horizontal rotation process. The setting of the recovery hole 66 is conducive to the discharge of excess precursor liquid. The smooth operation of the heating substrate 61 is conducive to enhancing the high-quality preparation of superconducting devices.

[0033] like Figure 1As shown, the precursor liquid recovery unit 1 includes a recovery tray 11 and a recovery pipe group 12. The recovery tray 11 is installed below the heating substrate 61. The recovery pipe group 12 is arranged outside the preparation furnace 7 and is connected to the recovery tray 11 through a pipeline. The precursor liquid recovery unit 1 recovers different types of precursor liquids, which is beneficial to material saving.

[0034] like Figure 1 As shown, the preparation furnace 7 is a closed structure, and the preparation furnace 7 includes an upper cover plate 71 and a furnace body 72. The upper cover plate 71 is installed on the furnace body 72. The precursor liquid guide unit 5 and the atmosphere input unit 3 are both installed on the upper cover plate 71. The closed preparation furnace 7 provides a setting place for other units and provides a controllable research and development environment for the preparation of superconducting rings.

[0035] Embodiment 2:

[0036] Based on the process method of using a YBCO superconducting ring manufacturing device in Example 1, the process method includes the following steps:

[0037] Step 1: Place the ring-shaped or sheet-shaped base belt 4 on the plate 63 and fix the base belt 4 by the clamp 64;

[0038] Step 2: storing the precursor liquid involved in the preparation of the buffer layer and the superconducting layer in the precursor liquid guiding unit 5, and adjusting the position of the precursor liquid guiding unit 5 on the upper cover plate 71;

[0039] Step 3: The precursor liquid guiding unit 5 drips the precursor liquid onto the surface of the base tape 4, and the rotating device 62 spreads the precursor liquid onto the heated substrate 61 by rotating;

[0040] Step 4: The precursor liquid recovery unit 1 absorbs the excess precursor liquid received by the recovery plate 11 from the recovery hole 66 through the recovery pipe group 12;

[0041] Step 5: The atmosphere input unit 3 and the graphite heating unit 2 work to provide a stable crystallization environment inside the preparation furnace 7;

[0042] Step 6: heating the substrate 61 to heat the precursor solution to crystallize the precursor solution;

[0043] Step 7: Repeat steps 3 to 6, layer by layer coating of the precursor solution and crystallization until the texture of the buffer layer and the superconducting layer is formed.

[0044] When the device is used, if a small-sized superconducting ring is to be prepared, such as Figure 4 As shown, the sheet-shaped base tape 4 is fixed to the plate body 63, the output of the precursor liquid guiding unit 5 is adjusted to be directly above the center of the base tape 4, and then the superconducting sheet is manufactured using the manufacturing device under the preparation process. After the preparation is completed, the superconducting sheet is cut into superconducting rings.

[0045] If we want to prepare large-sized superconducting rings, Figure 5 As shown, the annular base tape 4 is fixed to the plate body 63, the output of the precursor liquid guiding unit 5 is adjusted to be located at the inner ring edge of the base tape 4, and then the superconducting ring is directly prepared using the manufacturing device under the preparation process.

[0046] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A YBCO superconducting ring manufacturing device, characterized in that: The invention comprises a precursor liquid recovery unit (1), a graphite heating unit (2), an atmosphere input unit (3), a precursor liquid flow guide unit (5), a rotary heat treatment unit (6) and a preparation furnace (7). The precursor liquid flow guide unit (5) is installed on the top of the preparation furnace (7), and the output end thereof extends into the preparation furnace (7), and is used to store the superconducting layer precursor liquid and the buffer layer precursor liquid required for the YBCO superconducting ring. The rotary heat treatment unit (6) is arranged in the preparation furnace (7), and is used to receive the precursor liquid and heat and crystallize the precursor liquid. The precursor liquid recovery unit (1) is installed below the rotary heat treatment unit (6), and is used to recover the excess precursor liquid on the rotary heat treatment unit (6). The graphite heating unit (2) is installed in the preparation furnace (7), and is used to maintain the stability of the heat treatment atmosphere inside the preparation furnace (7). The output end of the atmosphere input unit (3) is arranged in the preparation furnace (7), and is used to supply the preparation furnace (7) with gas for maintaining the stability of the reaction. The precursor liquid recovery unit (1) comprises a recovery tray (11) and a recovery pipe group (12), wherein the recovery tray (11) is installed below the heating substrate (61), and the recovery pipe group (12) is arranged outside the preparation furnace (7) and connected to the recovery tray (11) through a pipeline; The rotary heat treatment unit (6) comprises a rotary device (62) and a heating substrate (61), wherein the rotary device (62) is used to level the thickness of the precursor liquid, and the heating substrate (61) is mounted on the rotary device (62) and is used to heat the precursor liquid; The heating substrate (61) comprises a plate body (63) and a clamp (64); the plate body (63) is in a disc structure; a plurality of recovery holes (66) are provided at the edge of the plate body (63); the clamp (64) is mounted on the plate body (63) and is used to clamp the base tape; a rotation slot (65) is provided at the bottom of the plate body (63); the rotation slot (65) cooperates with a protrusion on the precursor liquid recovery unit (1) and is used to maintain the horizontal rotation of the plate body (63).

2. A YBCO superconducting ring manufacturing device according to claim 1, characterized in that: The precursor liquid guiding unit (5) comprises a plurality of coating chambers for storing different types of precursor liquids. The precursor liquid guiding unit (5) is movably mounted on the preparation furnace (7). The precursor liquid guiding unit (5) is sealed and mounted on the preparation furnace (7).

3. A YBCO superconducting ring manufacturing device according to claim 1, characterized in that: The preparation furnace (7) is a closed structure, comprising an upper cover plate (71) and a furnace body (72), wherein the upper cover plate (71) is mounted on the furnace body (72), and the precursor liquid guide unit (5) and the atmosphere input unit (3) are both mounted on the upper cover plate (71).

4. A superconducting ring manufacturing process method based on a YBCO superconducting ring manufacturing device according to any one of claims 1 to 3, characterized in that: The process comprises the following steps: Step 1: placing a ring-shaped or sheet-shaped base belt on the plate body (63) and fixing the base belt by a clamp (64); Step 2: storing the precursor liquid involved in the preparation of the buffer layer and the superconducting layer in the precursor liquid guiding unit (5), and adjusting the position of the precursor liquid guiding unit (5) on the upper cover plate (71); Step 3: The precursor liquid guiding unit (5) drips the precursor liquid onto the surface of the base tape, and the rotating device (62) spreads the precursor liquid onto the heated substrate (61) by rotating; Step 4: The precursor liquid recovery unit (1) absorbs the excess precursor liquid received by the recovery plate (11) from the recovery hole (66) through the recovery pipe group (12); Step 5: The atmosphere input unit (3) and the graphite heating unit (2) work to provide a stable crystallization environment inside the preparation furnace (7); Step 6: heating the substrate (61) to heat the precursor solution to crystallize the precursor solution; Step 7: Repeat steps 3 to 6, layer by layer coating of the precursor solution and crystallization until the texture of the buffer layer and the superconducting layer is formed.

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