Protection tool for winding single-wire multi-cake coil

Abstract

The utility model relates to the technical field of fusion reactors, in particular to a protection tool for winding a single-wire multi-cake coil, which comprises a tool body which is abutted between a first wire coil and a coil framework and can synchronously rotate with the first wire coil and the coil framework. A protection groove for fixing the suspended strip is formed in the outer surface of the tool body, and the suspended strip can be arranged in the protection groove. The protection groove for fixing the suspended strip is formed in the outer surface of the tool body, in the winding process, the suspended strip between the first wire coil and the coil framework can be arranged in the protection groove, the suspended strip is fixed and protected, the strip is not in an exposed and suspended state, damage to the suspended strip is reduced, and the service life of the suspended strip is prolonged. The reliability in the winding process of the single-wire multi-cake coil is improved, and the winding cost of the coil is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fusion reactors, in particular to a protection tool for single-wire multi-pie winding. BACKGROUND

[0002] Compared with single-pie coils, double-pie coils or multi-pie coils wound with a single strip can improve coil performance by reducing joints, especially for double-pie superconducting coils. Double-pie coils wound with a single superconducting wire can reduce the number of non-superconducting connections by half, which is beneficial to reducing thermal interference in the superconducting coil to improve the ability of the superconducting coil to operate stably.

[0003] Taking a double-pie coil as an example, the double-pie coil is wound with a single superconducting strip on the same double-pie coil framework to form two single-pie windings. During winding, the single superconducting strip is wound on a first spool and a second spool with the middle point as the starting point. The coil framework and the first spool are installed on a winding mechanism, and the middle point of the superconducting strip is placed in the winding groove of the first pie coil of the coil framework. The second spool is arranged on another rotating shaft on one side, and the superconducting strip in the second spool is wound on the first pie coil along the winding groove of the coil framework. The first spool rotates with the coil framework, and after the first pie coil is wound, the first spool is arranged on another rotating shaft on one side, and the coil framework is rotated to wind the second pie coil.

[0004] During winding, in order to ensure the flatness of the surface of the superconducting coil and prevent the superconducting strip from protruding, the wound superconducting strip needs to be adjusted manually. During winding of the first pie coil, since the first spool and the coil framework are installed on the same rotating shaft and rotate together, there is superconducting strip suspended between the first spool and the coil framework and exposed to the outside, which will continue to rotate with the winding of the first pie coil, and the suspended and exposed superconducting strip is extremely easy to be damaged. For the superconducting strip, even a small scratch or damage can significantly affect the performance of the entire superconducting strip.

[0005] Therefore, how to improve the reliability during winding of single-wire multi-pie coils has become a technical problem to be solved. SUMMARY

[0006] The present application provides a protection tool for single-wire multi-pie winding to solve the technical problems mentioned in the background.

[0007] The application provides a protection tool for single-wire multi-coil coil winding, which is suitable for a single-wire multi-coil winding machine, the winding machine comprising a first winding mechanism and a second winding mechanism, the winding machine further comprising a first wire reel and a second wire reel and at least one coil former, the strip on the first wire reel and the second wire reel being the same strip, the coil former and the first wire reel being arranged on the first winding mechanism, and the coil former and the first wire reel being fixed on the same rotating shaft, and the coil former and the first wire reel having a suspended strip therebetween; the second wire reel being arranged on the second winding mechanism; the protection tool comprising: a tool body abutting between the first wire reel and the coil former, capable of synchronously rotating with the first wire reel and the coil former, and a protection groove for fixing the suspended strip being formed on the outer surface of the tool body, and the suspended strip being arranged in the protection groove.

[0008] In an embodiment, the shape of the protection groove is consistent with the shape of the suspended strip when the suspended strip is transferred between the first wire reel and the coil former.

[0009] In an embodiment, the first end of the tool body abuts against the first wire reel, the second end of the tool body abuts against the coil former, the suspended strip is transferred from the first wire reel into the protection groove and from the protection groove onto the coil former; wherein the size of the first end is adapted to the size of the first wire reel, and the size of the second end is adapted to the size of the coil former.

[0010] In an embodiment, the protection groove is spirally formed on the surface of the protection tool from the first end to the second end.

[0011] In an embodiment, a groove cover is further arranged on the top of the protection groove.

[0012] In an embodiment, the groove cover comprises a plurality of separate sub-cover bodies, which are uniformly and detachably arranged on the top of the protection groove.

[0013] In an embodiment, the groove cover further comprises a flexible adhesive strip to cover the protection groove.

[0014] In an embodiment, the width of the protection groove is adapted to the width of the strip, and the depth of the protection groove is adapted to the thickness of the strip.

[0015] In an embodiment, the depth of the protection groove is 1-2 mm.

[0016] In an embodiment, the protection groove comprises a plurality of sub-protection grooves with different widths, wherein the plurality of sub-protection grooves are arranged side by side or in a width-stacked manner.

[0017] The embodiments of the present application have at least the following beneficial effects:

[0018] The protection tool in the present application comprises a tool body abutting between the first wire reel and the coil former, capable of rotating synchronously with the first wire reel and the coil former, a protection groove for fixing the suspended strip is formed on the outer surface of the tool body, and the suspended strip can be arranged in the protection groove. The protection groove for fixing the suspended strip is formed on the outer surface of the tool body, and during the winding process, the suspended strip between the first wire reel and the coil former can be arranged in the protection groove, so as to fix and protect the suspended strip, so that the strip is not in a state of bare suspension, the damage to the suspended strip is reduced, the reliability during the winding process of the single-wire multi-pie coil is improved, and the winding cost of the coil is reduced.

[0019] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 A single-wire multi-pie coil winding process schematic diagram in the related art;

[0022] Figure 2 A protection tool for single-wire multi-pie coil winding provided by the embodiments of the present application participates in the winding process schematic diagram;

[0023] Figure 3 A partial enlarged view of a protection groove of the protection tool for single-wire multi-pie coil winding provided by the embodiments of the present application;

[0024] Figure 4 A protection tool for single-wire multi-pie coil winding provided by the embodiments of the present application participates in the winding process schematic diagram;

[0025] The schematic diagram is as follows:

[0026] 10, first winding mechanism; 20, second winding mechanism; 30, first wire reel; 40, second wire reel; 50, coil former; 60, suspended strip; 70, tool body; 71, protection groove; 711, first width sub-protection groove; 712, second width sub-protection groove; 72, sub-cover body. DETAILED DESCRIPTION

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0028] A single-wire multi-pane coil uses a single superconducting tape to wind multiple single-pane windings in parallel on the same coil frame 50. The single-wire multi-pane coil includes at least two pane coils; in this embodiment, a single-wire double-pane coil is used as an example. When winding a single-wire double-pane coil, the following methods can be employed: Figure 1 The winding machine shown includes a first winding mechanism 10 and a second winding mechanism 20. The winding machine also includes a first coil 30, a second coil 40, and at least one coil bobbin 50. The strip on the first coil 30 and the second coil 40 is the same strip. The coil bobbin 50 and the first coil 30 are disposed on the first winding mechanism 10, and the coil bobbin 50 and the first coil 30 rotate coaxially. There is a suspended strip 60 between the coil bobbin 50 and the first coil 30. The second coil 40 is disposed on the second winding mechanism 20.

[0029] Before winding, a superconducting tape is wound onto the first coil 30 and the second coil 40 respectively. The coil frame 50 is mounted on the rotating shaft of the first winding mechanism 10. The superconducting tape, located at the middle part of the first coil 30 and the second coil 40, is fixed onto the coil frame 50 as the starting point. The first coil 30 is mounted on the rotating shaft of the first winding mechanism 10, so that the first coil 30 and the coil frame 50 rotate synchronously around the same rotating shaft. There is a suspended tape 60 between the first coil 30 and the coil frame 50. The second coil 40 is mounted on the rotating shaft of the second winding mechanism 20. The first winding mechanism 10 starts to rotate, driving the coil frame 50 and the first coil 30 to rotate coaxially. The superconducting tape on the first coil 30 and the suspended tape 60 do not participate in the winding. The second coil 40 releases wire and participates in winding the first coil. After the first coil is wound and fixed, the first coil 30 is mounted onto the second winding mechanism 20 to start winding the second coil, until the winding is completed.

[0030] In the process of winding the first pancake coil, to ensure the flatness of the surface of the superconducting coil and prevent the superconducting tape from protruding, the tape of the first pancake coil needs to be adjusted manually. In the process of adjustment, it is easy to touch the suspended tape 60 between the first reel 30 and the coil former 50, resulting in scratches on the surface of the suspended tape 60 or damage to the suspended tape 60.

[0031] Based on this, as Figure 2 shown, the application provides a protection tool for single-wire multi-pancake coil winding, which is installed between the first reel 30 and the coil former 50. For example, a threaded rod and a threaded rod sleeve are also arranged at the center of the coil former 50 to fix the protection tool and the first reel 30, so that the protection tool, the first reel 30 and the coil former 50 temporarily become a whole, ensuring that the whole structure is tightly connected during the winding of the first pancake coil.

[0032] The protection tool comprises a tool body 70 abutting between the first reel 30 and the coil former 50, which can rotate synchronously with the first reel 30 and the coil former 50. A protection groove 71 for fixing the suspended tape 60 is formed on the outer surface of the tool body 70, and the suspended tape 60 can be arranged in the protection groove 71. In this embodiment, the protection groove 71 for fixing the suspended tape 60 is formed on the outer surface of the tool body 70. During winding, the suspended tape 60 between the first reel 30 and the coil former 50 can be arranged in the protection groove 71 to fix and protect the suspended tape 60, so that the tape is not in a state of bare suspension, reducing damage to the suspended tape 60, improving the reliability during single-wire multi-pancake coil winding, and reducing the winding cost of the coil.

[0033] In an embodiment, the trend of the suspended tape 60 when transitioning between the first reel 30 and the coil former 50 can be in the form of spirally downward (as shown in the suspended tape 60 trend shape in Figure 1 of course, it can also be in other trend shapes, for example, obliquely downward, vertically downward, etc. In this embodiment, the corresponding shape of the protection groove 71 can be formed on the surface of the tool body 70 according to the actual trend shape of the suspended tape 60 during winding, so that the shape of the protection groove 71 is consistent with the trend shape of the suspended tape 60 when transitioning between the first reel 30 and the coil former 50, so that the suspended tape 60 is not subjected to stress when fixed in the protection groove 71, and the tape can be better protected.

[0034] In an embodiment, taking superconducting tape as an example, in order to reduce the stress on the suspended tape 60, the suspended tape 60 between the first reel 30 and the coil former 50 often takes the form of spirally downward, and correspondingly, the protection groove 71 on the surface of the tool body 70 is in the form of a spiral.

[0035] In order to enable the strip to smoothly transition between the coil frame 50 and the protective tooling, and between the protective tooling and the first coil spool 30, in one embodiment, the first end of the tooling body 70 abuts against the first coil spool 30, the second end of the tooling body 70 abuts against the coil frame 50, and the suspended strip 60 transitions from the first coil spool 30 into the protective groove 71, and from the protective groove 71 onto the coil frame 50.

[0036] The dimensions of the first end are adapted to the dimensions of the first coil spool 30, and the dimensions of the second end are adapted to the dimensions of the coil frame 50. Since the coil spool is often larger than the coil frame 50, the fixture body 70 is funnel-shaped, with a larger opening at the first end and a smaller opening at the second end. The dimensions of the first end are the same as the coil frame 50, allowing the protective fixture to perfectly fit the circular coil frame 50, enabling the strip to smoothly transition from the coil frame 50 into the protective groove 71 on the outside of the protective fixture. The dimensions of the second end are the same as the dimensions of either the first coil spool 30 or the second coil spool 40, facilitating the smooth entry of the strip from the groove on the outside of the fixture into the first coil spool 30.

[0037] In an optional embodiment, the dimensions and shapes of the first and second ends of the tooling body 70 can be determined based on the shape of the magnet coil frame 50 in the actual application. Since the coil of the strip and the coil frame 50 are often circular, in this embodiment, the first and second ends can be circular. Other shapes can be determined based on the actual shape of the coil and the coil frame 50, such as racetrack shape, square shape, and other irregular shapes.

[0038] In one embodiment, the width of the protective groove 71 is adapted to the width of the strip, and the depth of the protective groove 71 is adapted to the thickness of the strip. Taking superconducting strip as an example, the width of superconducting strip often has various widths, and the width of the protective groove 71 can be set according to the width of the superconducting strip to be wound. The thickness can be set according to the thickness of the superconducting strip. In this embodiment, the width of the superconducting strip is 4mm and 12mm, and the thickness is less than 1mm. The width of the protective groove 71 is 4mm / 12mm. Different widths can be selected according to different requirements of superconducting coil winding. The depth of the protective groove 71 is 1-2mm to ensure that the superconducting strip can be completely contained within the protective groove 71.

[0039] To increase the applicability of the protective tooling, the protective groove 71 includes multiple sub-protective grooves with different widths, wherein the multiple sub-protective grooves are arranged side by side or stacked according to their widths. Figure 3 As shown, the following explanation uses an example of multiple sub-protective slots stacked according to their width. Figure 3Two sub-protection grooves of different widths are shown in the example, wherein a first width sub-protection groove 711 is formed on the surface of the tool body 70, and a second width sub-protection groove 712 with a smaller width is formed on the bottom of the first width sub-protection groove 711, so that the same protection tool can be applied to superconducting tapes of various width specifications.

[0040] In an embodiment, in order to enable the tape to be more stably fixed in the protection groove 71, a groove cover body can be further arranged on the top of the protection groove 71 when the tape is in the protection groove 71. In order to facilitate operation, as shown in the figure, the groove cover body can include a plurality of separate sub-cover bodies 72, which are uniformly and detachably arranged on the top of the protection groove 71. In the example, the two ends of the sub-cover body 72 can be detachably fastened on the top of the protection groove 71 by screws / bolts; or one end of the sub-cover body 72 can be rotatably fixed on the top of the protection groove 71, and the other end can be fastened on the top of the protection groove 71 by screws / bolts. Figure 4

[0041] In order to enable the tape to be fixed in the protection groove 71 without tension when the tape is in the protection groove 71, in the embodiment, the groove cover body can also adopt a flexible adhesive strip, for example, a tape. In the embodiment, the tape can also be used in cooperation with the plurality of sub-cover bodies 72, and the tape is pasted and fixed in the area between the sub-cover bodies 72, so as to not only fix the tape between the sub-cover bodies 72, but also more comprehensively protect the surface of the tape to prevent the surface from being scratched during the winding process.

[0042] In an embodiment, the side surface of the protection tool can also be a complete fan-shaped arc surface, or a fan-shaped arc surface composed of a plurality of epoxy resin strips or stainless steel strips and the like hard strip-shaped materials. The overall material of the protection tool can be selected from any hard material such as acrylic plate, copper, stainless steel, iron and the like.

[0043] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0044] ​In addition, the terms "horizontal," "vertical," "suspended," and the like, do not mean that the components must be absolutely horizontal or suspended, but can be slightly inclined. For example, "horizontal" merely means that it is more horizontal than "vertical," and does not mean that the structure must be perfectly horizontal, but can be slightly inclined.

[0045] In the description of the application, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0046] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

Claims

1. A protective fixture for winding single-wire multi-panel coils, characterized in that, The protective fixture is applicable to a single-wire multi-pane winding machine. The winding machine includes a first winding mechanism and a second winding mechanism. The winding machine also includes a first coil and a second coil, as well as at least one coil bobbin. The strip on the first coil and the second coil is the same strip. The coil bobbin and the first coil are arranged on the first winding mechanism. The coil bobbin and the first coil are fixed on the same rotating shaft. There is a suspended strip between the coil bobbin and the first coil. The second coil is mounted on the second winding mechanism; the protective fixture includes: The tooling body abuts between the first coil and the coil frame, and can rotate synchronously with the first coil and the coil frame. A protective groove for fixing the suspended strip is provided on the outer surface of the tooling body, and the suspended strip can be placed in the protective groove.

2. The protective fixture for single-wire multi-coil winding as described in claim 1, characterized in that, The shape of the protective groove is consistent with the trend shape of the suspended strip during its transition between the first coil and the coil frame.

3. The protective fixture for single-wire multi-coil winding as described in claim 1, characterized in that, The first end of the tooling body abuts against the first coil, and the second end of the tooling body abuts against the coil frame. The suspended strip transitions from the first coil to the protective groove, and then from the protective groove to the coil frame. The size of the first end is adapted to the size of the first coil, and the size of the second end is adapted to the size of the coil frame.

4. The protective fixture for single-wire multi-coil winding as described in claim 3, characterized in that, The protective groove is spirally formed on the surface of the protective tooling from the first end to the second end.

5. The protective fixture for single-wire multi-coil winding as described in claim 1, characterized in that, A cover is also provided on top of the protective groove.

6. The protective fixture for single-wire multi-coil winding as described in claim 5, characterized in that, The groove cover body includes multiple separate sub-cover bodies, which are evenly and detachably installed on the top of the protective groove.

7. The protective fixture for single-wire multi-coil winding as described in claim 5, characterized in that, The groove cover also includes a flexible adhesive strip to cover the protective groove.

8. The protective fixture for single-wire multi-coil winding as described in claim 1, characterized in that, The width of the protective groove is adapted to the width of the strip, and the depth of the protective groove is adapted to the thickness of the strip.

9. The protective fixture for single-wire multi-coil winding as described in claim 8, characterized in that, The depth of the protective groove is 1-2 mm.

10. The protective fixture for single-wire multi-panel coil winding as described in claim 1, characterized in that, The protective groove includes multiple sub-protective grooves with different widths, wherein the multiple sub-protective grooves are arranged side by side or stacked according to their widths.

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