Universal tool for testing performance of pie-shaped superconducting coil

Abstract

The invention relates to a universal tool for testing the performance of a cake-shaped superconducting coil, and relates to the field of superconducting coil testing, and the universal tool comprises a supporting plate framework which forms the design basis of the tool; and the lockable clamping jaw structure is fixedly installed in the supporting plate framework and comprises an epoxy gear rotating disc, an epoxy connecting rod, an epoxy clamping jaw and a rotating disc locking module, the epoxy gear rotating disc forms a clamping jaw part for fastening and restraining the pie-shaped coil, and the rotating disc locking module is used for locking the clamping jaw part. The tool has the beneficial effects that the lockable clamping jaw structure is adjusted to adapt to pie-shaped coils of different sizes, and the universality of the tool is improved.

Description

Technical Field

[0001] The invention relates to the field of superconducting coil testing, and in particular to a universal tooling for testing the performance of a pancake-shaped superconducting coil. Background Art

[0002] In situations such as critical current testing and magnetic field testing for pancake-shaped superconducting coil performance testing, the superconducting coil needs to be immersed in liquid nitrogen or other coolants. In order to ensure that the superconducting coil can remain relatively still during the test and to comb the corresponding test leads, the pancake-shaped superconducting coil is often clamped with a fastening tool.

[0003] According to design requirements, the radial dimensions of pancake-shaped superconducting coils and their frames in different applications are not consistent. In order to test different types of pancake-shaped superconducting coils, different types of fastening tools need to be designed and processed. On the one hand, the time and cost of testing are increased; on the other hand, different types of tools increase the management cost of the site.

[0004] Furthermore, if a certain type of pancake-shaped superconducting coil is no longer produced, the corresponding customized tooling will also be scrapped, resulting in a waste of materials.

[0005] In view of the above problems, there is no good solution to the problem in the existing testing process. Therefore, it is necessary to propose a solution that can be used for performance test experiments of pancake-shaped superconducting coils of different sizes. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a universal tooling for testing the performance of a pancake-shaped superconducting coil, which is used to fasten and install the pancake-shaped superconducting coil to be tested, comprising:

[0007] A support plate frame, the support plate frame comprising: a bottom plate, a support column, a support plate, and a copper nose, the support column being fixedly mounted on the bottom plate, the support plate being fixedly mounted on the support column, forming an inner cavity of the support plate frame;

[0008] A lockable claw structure, wherein the lockable claw structure is fixedly mounted in the inner cavity of the support plate frame;

[0009] A pancake-shaped coil is fastened to the support plate frame by the claw structure.

[0010] Furthermore, the lockable claw structure includes: an epoxy gear turntable, an epoxy connecting rod, an epoxy claw, and a turntable locking module. The epoxy gear turntable is mounted between the base plate and the support plate. The epoxy connecting rod is installed on the epoxy gear turntable and placed under the support plate. The epoxy claw is installed with the epoxy connecting rod and passes through the support plate. The turntable locking module is fixedly mounted on the base plate and connected to the epoxy gear turntable.

[0011] Furthermore, the pancake coil includes: a skeleton, a coil, and a strip lead. The skeleton is placed on the support plate and constrained by the epoxy claws. The coil is wound on the skeleton. The strip lead is welded to the coil and extends to be tightly connected to the copper nose. The copper nose is fixedly mounted on the support plate.

[0012] Furthermore, the support plate is provided with a plurality of mounting positions, and the copper nose can be fastened and installed on any of the mounting positions.

[0013] Furthermore, one end of the epoxy connecting rod is connected to the epoxy gear turntable, and the other end is connected to the epoxy claw.

[0014] Furthermore, the epoxy gear turntable is provided with mounting holes at equal intervals, and the epoxy connecting rod can be connected to the epoxy gear turntable through different mounting holes.

[0015] Furthermore, the epoxy connecting rod is connected to the epoxy gear turntable by a hinge connection, and the epoxy claw is connected to the epoxy connecting rod by a hinge connection.

[0016] Furthermore, a slot is formed on the support plate, the epoxy claw is passed through the slot, and the epoxy claw moves linearly along the slot.

[0017] Furthermore, the turntable locking module includes an outer frame, a feed shaft, and a stop pressure block. The outer frame is fixedly mounted on the base plate, the stop pressure block is placed inside the outer frame, and the feed shaft penetrates from the outside of the outer frame and is connected to the stop pressure block.

[0018] Furthermore, the feed shaft passes through the outer frame to move linearly, driving the stop block to tighten or loosen the epoxy gear turntable.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) Through the crank slider structure composed of the epoxy gear turntable, epoxy connecting rod and epoxy claws, the epoxy gear turntable is rotated to control the tension of the epoxy claws, so that pancake-shaped superconducting coils of different sizes can be constrained on the epoxy support plate;

[0021] (2) By changing the fixed point position of the epoxy connecting rod on the epoxy gear turntable, the tensioning size range of the clamping claw can be changed, thereby expanding the application range of the fastening tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a structural schematic diagram of an embodiment of the present invention;

[0023] Figure 2 is a schematic diagram of a decomposed structure of an embodiment of the present invention;

[0024] Figure 3 It is a structural schematic diagram of a pallet frame;

[0025] Figure 4 It is a structural schematic diagram of a lockable claw structure;

[0026] Figure 5 It is a structural diagram of a pancake coil;

[0027] Figure 6 It is a structural schematic diagram of a turntable locking module.

[0028] Among them, the figure markings are: 100, support plate frame; 101, base plate; 102, support column; 103, support plate; 104, copper nose; 110, lockable claw structure; 111, epoxy gear turntable; 112, epoxy connecting rod; 113, epoxy claw; 114, turntable locking module; 1141, outer frame; 1142, feed shaft; 1143, stop pressure block; 120, pancake coil; 121, skeleton; 122, coil; 123, strip lead. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in each embodiment of the present practicality described below can be combined with each other as long as they do not conflict with each other. To achieve the above-mentioned purpose, the present invention adopts the following technical scheme.

[0030] like Figure 1-2As shown, a universal tooling for testing the performance of a pancake-shaped superconducting coil of the present invention is used to clamp the pancake-shaped coil 120 to be tested. The universal tooling includes a support plate frame 100, a lockable clamping claw structure 110 and a pancake-shaped coil 120. The pancake-shaped coil 120 is fixed to the support plate frame 100 by the lockable clamping claw structure 110. In this example, the support plate frame 100 includes: a bottom plate 101, a support column 102, and a support plate 103. The support column 102 is fixedly mounted on the bottom plate 101, and the support plate 103 is fixedly mounted on the support column 102. The bottom plate 101 and the support plate 103 in the support plate frame 100 are supported by the support column 102 to form an inner cavity, and the lockable clamping claw structure 110 is fixedly mounted in the inner cavity. The lockable claw structure 110 includes: an epoxy gear turntable 111, an epoxy connecting rod 112, an epoxy claw 113, and a turntable locking module 114. The epoxy gear turntable 111 is mounted between the bottom plate 101 and the support plate 103. The epoxy connecting rod 112 is mounted on the epoxy gear turntable 111 and placed under the support plate 103. The epoxy claw 113 is mounted on the epoxy connecting rod 112 and passes through the support plate 103. The turntable locking module 114 is fixedly mounted on the bottom plate 101 and connected to the epoxy gear turntable 111. The epoxy gear turntable 111 in the lockable claw structure 110 can rotate around the axis of the epoxy gear turntable 111 in the inner cavity through the constraints of the bottom plate 101 and the support plate 103. One end of the epoxy connecting rod 112 is connected to the epoxy gear turntable 111, and the other end is connected to the epoxy claw 113. The epoxy connecting rod 112 is connected to the epoxy gear turntable 111 through a hinge, and the epoxy claw 113 is connected to the epoxy connecting rod 112 through a hinge. The installation holes on the epoxy gear turntable 111 are distributed to spread outward from the origin, that is, when the epoxy gear turntable 111 rotates, the part between the installation holes and the shaft forms a rotating arm. The epoxy connecting rod 112 is respectively connected to the epoxy gear turntable 111 and the epoxy claw 113 through a hinge. In addition, the epoxy claw 113 passes through the slot on the support plate 103, so as to form a crank slider mechanism, and the epoxy claw 113 moves linearly along the slot. The number of the slots is consistent with that of the epoxy claw 113, which is not less than 3, and is evenly distributed around the center of the support plate 103. A claw structure can be formed by three sets of evenly distributed epoxy connecting rods 112 and epoxy claws 113. By rotating the epoxy gear turntable 111, the pancake coil 120 placed on the support plate 103 is clamped from the inside of the skeleton 121. During the test, the pancake coil 120 is statically placed in a coolant such as liquid nitrogen, so there is no need to consider the constraint problem of the pancake coil 120 in the vertical direction. The claw structure is sufficient to meet the constraint requirements of the pancake coil 120. In order to prevent the epoxy gear turntable 111 from rotating during the test experiment, causing the epoxy claws 113 to shrink and no longer constrain the pancake coil 120, the turntable locking module 114 is designed to lock the epoxy gear turntable 111.The turntable locking module 114 includes an outer frame 1141, a feed shaft 1142, and a stop pressure block 1143. The outer frame 1141 is fixedly mounted on the bottom plate 101, and the stop pressure block 1143 is placed inside the outer frame 1141. The feed shaft 1142 penetrates from the outside of the outer frame 1141 and is connected to the stop pressure block 1143. By rotating the feed shaft 1142, the stop pressure block 1143 is pushed to tighten or loosen the epoxy gear turntable 111 like a brake pad. If the pancake coil 120 needs to be removed, the feed shaft 1142 is rotated in the opposite direction to unlock the epoxy gear turntable 111. After the pancake coil 120 is clamped and constrained, the strip lead 123 is fastened to the copper nose 104 mounted on the support plate 103 to form the required test signal loop with external test devices, signal sources and other test instruments.

[0031] like Figure 3 As shown, there are multiple installation holes for installing the copper nose 104 on the support plate 103. There is no strict requirement for the specific position of the installation hole, which can be opened according to the actual test situation. If conditions permit, it can even be opened before the test experiment begins. The main reason is to deal with pancake coils 120 of different sizes. If the copper nose 104 is fixedly installed at one point, the following situations may occur during the process of fastening and installing the strip lead 123 and the copper nose 104 of pancake coils 120 of different sizes: (1) The strip lead 123 is not long enough to be fastened and installed with the copper nose 104; (2) The strip lead 123 is too long and needs to be folded before it can be fastened and installed with the copper nose 104. These situations are not allowed in actual test experiments. Therefore, it is necessary to adjust the installation position of the copper nose 104 according to the size of the pancake coil 120.

[0032] like Figure 4 As shown, the epoxy gear turntable 111 is equidistantly processed with mounting holes for the epoxy connecting rod 112, and the holes at each spacing represent the size range of the pancake coil 120 that the current lockable claw structure 110 is applicable to. If the size of the pancake coil 120 exceeds the claw range of the current lockable claw structure 110, the length of the active rod of the crank slider structure of the lockable claw structure 110 is manually increased by installing the epoxy connecting rod 112 on the next outer edge hole of the current hole, so as to achieve the shifting of the claw displacement range and improve the versatility of the universal tooling. In actual use, the movement mode and shifting scheme of the claw structure can be designed according to the use requirements, and this example will not be repeated one by one.

[0033] like Figure 5As shown, the pancake coil 120 includes a skeleton 121, a coil 122, and a strip lead 123. The skeleton 121 is placed on the support plate 103 and constrained by the epoxy clamps 113. The coil 122 is wound on the skeleton 121. The strip lead 123 is welded to the coil 122 and extends to be fastened to the copper nose 104.

[0034] like Figure 6 As shown, the outer frame 1141 in the turntable locking module 114 is mainly used for supporting, and is directly fixed on the bottom plate 101. The feed shaft 1142 passing through the outer frame 1141 is connected to the outer frame 1141 by threading, and is connected to the stop pressure block 1143 by hinges. By rotating the feed shaft 1142, the push-in and withdrawal of the stop pressure block 1143 is controlled, and the locking function of the lockable claw structure 110 is realized by controlling whether the stop pressure block 1143 is pressed tightly on the epoxy gear turntable 111. In actual use, the feeding action of the stop pressure block 1143 can be designed according to the use requirements, and this example will not be repeated one by one.

[0035] In summary, the effects of the present application are: the pancake-shaped coil is constrained and fixed by a lockable claw structure to achieve the clamping function of the pancake-shaped coil, and the applicable range of the claws of the lockable claw structure is adjusted to cope with pancake-shaped coils of different sizes, thereby improving the versatility of the tooling.

[0036] Since the present method cannot enumerate all embodiments, some preferred technical features and preferred technical solutions can be reasonably replaced or combined with each other, and the new technical solutions obtained thereby are also included in the present method.

[0037] It should be understood that for those of ordinary skill in the art, improvements or changes can be made based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the present invention. The drawings corresponding to the specific implementation scheme exist in the form of auxiliary understanding, which can facilitate readers to fully understand the abstract higher-level concepts of the technical concepts involved in the present method by understanding the specific and figurative lower-level concepts. When the overall understanding of the present method and the comparison with other technical solutions other than the technical solutions provided by the present method are compared, the appearance of the drawings should not be used as the only reference basis. After understanding the concept of the present method, a series of deformations, equivalent substitutions, combinations of characteristic elements, deletions and reorganizations of non-essential technical characteristic elements, and reasonable additions and reorganizations of non-essential technical characteristic elements commonly used in the prior art, etc., made in accordance with or without the drawings, should be understood as being included in the spirit of the present method.

Claims

1. A universal tool for testing the performance of a pancake-shaped superconducting coil, used for fastening and installing the pancake-shaped superconducting coil to be tested, characterized in that: include: A support plate frame, the support plate frame comprising: a bottom plate, a support column, a support plate, and a copper nose, the support column being fixedly mounted on the bottom plate, the support plate being fixedly mounted on the support column, forming an inner cavity of the support plate frame; A lockable claw structure, wherein the lockable claw structure is fixedly mounted in the inner cavity of the support plate frame; A pancake-shaped coil is fastened to the support plate frame by the claw structure.

2. A universal tool for testing the performance of a pancake-shaped superconducting coil according to claim 1, characterized in that: The lockable claw structure includes: an epoxy gear turntable, an epoxy connecting rod, an epoxy claw, and a turntable locking module. The epoxy gear turntable is mounted between the base plate and the support plate. The epoxy connecting rod is installed on the epoxy gear turntable and placed under the support plate. The epoxy claw is installed with the epoxy connecting rod and passes through the support plate. The turntable locking module is fixedly installed on the base plate and connected to the epoxy gear turntable.

3. A universal tool for testing the performance of a pancake-shaped superconducting coil according to claim 1, characterized in that: The pancake coil includes: a skeleton, a coil, and a strip lead. The skeleton is placed on the support plate and constrained by the epoxy claws. The coil is wound on the skeleton. The strip lead is welded to the coil and extends to be tightly connected with the copper nose. The copper nose is fixedly mounted on the support plate.

4. The universal tooling for testing the performance of a pancake-shaped superconducting coil according to claim 1, characterized in that: The support plate is provided with a plurality of installation positions, and the copper nose is fastened and installed on any of the installation positions.

5. The universal tooling for testing the performance of a pancake-shaped superconducting coil according to claim 2, characterized in that: One end of the epoxy connecting rod is connected to the epoxy gear turntable, and the other end is connected to the epoxy claw.

6. The universal tooling for testing the performance of a pancake-shaped superconducting coil according to claim 2, characterized in that: The epoxy gear turntable is provided with mounting holes at equal intervals, and the epoxy connecting rod is connected to the epoxy gear turntable through different mounting holes.

7. A universal tool for testing the performance of a pancake-shaped superconducting coil according to claim 6, characterized in that: The epoxy connecting rod is connected to the epoxy gear turntable by a hinge connection, and the epoxy claw is connected to the epoxy connecting rod by a hinge connection.

8. The universal tooling for testing the performance of a pancake-shaped superconducting coil according to claim 2, characterized in that: The support plate is provided with a slot hole, the epoxy claw is penetrated through the slot hole, and the epoxy claw moves linearly along the slot hole.

9. The universal tooling for testing the performance of a pancake-shaped superconducting coil according to claim 2, characterized in that: The turntable locking module includes an outer frame, a feed shaft, and a stop pressure block. The outer frame is fixedly mounted on the base plate, the stop pressure block is placed inside the outer frame, and the feed shaft penetrates from the outside of the outer frame and is connected to the stop pressure block.

10. A universal tool for testing the performance of a pancake-shaped superconducting coil according to claim 9, characterized in that: The feed shaft passes through the outer frame to move linearly, driving the stop block to press or release the epoxy gear turntable.

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