Description:WINDING DEVICE FOR FABRICATION OF RACETRACK SHAPED DOUBLE PANCAKE HIGH TEMPERATURE SUPERCONDUCTING FIELD COILS
TECHNICAL FIELD
[0001] The present disclosure, in general, relates to a winding process. In particular, the present invention relates to a horizontal winding process to produce high temperature superconducting coils using adjustable cryogenics.
BACKGROUND
[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] The high temperature superconducting coils are manufactured using various manual or automated devices and various processes respectively. The manual processes are handled by experienced human resource which considers overall life time of high temperature superconducting wire right from its production to operation under superconducting systems under various operating conditions of stresses (winding stresses, electromagnetic forces, operational stresses like centrifugal forces etc.), cryogenic temperatures and external magnetic fields. Some of these processes with intermediate human interventions can be made automatic. In this regard, many efforts have been made to make winding devices and arrangements therein. Some of these efforts are aimed at making winding methods semi-automated or fully automated. In all these devices and processes, the high temperature superconducting wire is processed at length to realize coils.
[0004] Technical Problem: As the superconductor used in high temperature superconducting wires is ceramic based, it is inherently brittle in nature. During winding process of coil, there must be a balance between winding stress applied and the ultimate tensile strength of wire as given by its manufacturer, otherwise wire handling process may damage the wire itself. Also, there is a minimum bending diameter specified by wire manufacturers for every high temperature superconducting wire, it should be well taken care of before deciding on coil former. If this wire is not handled with all precautions and proper care, it may lead to catastrophic damage with respect to money and time and much more. Moreover, after manufacture of a high temperature superconducting coil, the coils must also exhibit satisfactory performance during its operational journey in superconducting systems and meeting BJT-criterion.
[0005] Technical Solution: Accordingly, there is a need to produce high temperature superconducting coils which show absolute mechanical integrity in all conditions of intended electromagnetic forces and winding and operational stresses and also shown vibration free operational performance. Moreover, the coils must be able to sustain these forces over its overall operational time and under cryogenic temperatures.
OBJECTS OF THE DISCLOSURE
[0006] Some of the objects of the present disclosure, which at least one embodiment herein satisfy, are listed hereinbelow.
[0007] It is a general object of the present disclosure to develop a winding device for fabrication of racetrack shaped double pancake high temperature superconducting field coils.
[0008] It is another object of the present disclosure to develop winding device in which horizontal winding process is carried out to manufacture high temperature superconducting coils.
[0009] It is another object of the present disclosure is to provide produce high temperature superconducting coils exhibiting absolute mechanical integrity in all conditions of intended electromagnetic forces and winding and operational stresses.
[0010] Yet another object of the invention is to produce high temperature superconducting coils which show vibration free operational performance.
[0011] These and other objects and advantages of the present invention will be apparent to those skilled in the art after a consideration of the following detailed description taken in conjunction with the accompanying drawings in which a preferred form of the present invention is illustrated.
SUMMARY
[0012] This summary is provided to introduce concepts related to a winding process that manufacture high temperature conducting coils. The concepts are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
[0013] In an embodiment, the present disclosure relates to a winding device for fabrication of high temperature superconducting field coils comprising of a central mandril present over central circular plate to mount the components of the device, a primary rotating arm attached to the central mandril through a primary rotating arm drive motor, a secondary rotating arm connected to the central mandril through a secondary rotating arm drive motor, a racetrack shaped coil former secured over a hole provided for fastening a coil former support on a central mandril and a cordoning arrangement and central support structure to mount the central circular plate.
[0014] In an aspect, the central circular plate is supported over central support structure and whole setup is cordoned by multiple vertical cordoning poles and multiple horizontal cordoning beams is arranged around the periphery of winding device.
[0015] In an aspect, the two horizontal cordoning beams are joined together by a parallel beam support.
[0016] In an aspect, the U-type base connection gives support to each horizontal cordoning beam by fastening the cordoning beam support at bottom through this U-type base connection.
[0017] In an aspect, the primary rotating arm rotates over central circular plate through a roller wheel supported by roller wheel support.
[0018] In an aspect, the primary wire spool and secondary wire spools are mounted on primary and secondary rotating arms respectively.
[0019] In an aspect, the primary and secondary rotating arms moves forward and in reverse motion over rails and tension control through the primary rotating arm drive motor and secondary rotating arm drive motor.
[0020] In an aspect, the racetrack shape former is fastened over top of central mandril 518 for making high temperature superconducting double pancake coil by drawing wire from the spools mounted on the primary and secondary rotating arm each.
[0021] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.
[0022] It is to be understood that the aspects and embodiments of the disclosure described above may be used in any combination with each other. Several of the aspects and embodiments may be combined to form a further embodiment of the disclosure.
[0023] The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.
BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate exemplary embodiments and, together with the description, serve to explain the disclosed principles. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system and/or methods in accordance with embodiments of the present subject matter are now described, by way of example only, and with reference to the accompanying figures, in which:
[0025] FIG. 1 illustrates the winding device cordoning arrangement with the central support structure;
[0026] FIG. 2 illustrates the motoring arrangement on the central circular plate;
[0027] FIG. 3 illustrates the high temperature superconducting (HTS) coil former and HTS wire spools mounting on the central circular plate;
[0028] FIG. 4 illustrates the mountain arrangement with the cordoning beams;
[0029] FIG. 5 illustrates the complete setup of HTS coil winding device.
[0030] It should be appreciated by those skilled in the art that any block diagrams herein represent conceptual views of illustrative systems embodying the principles of the present subject matter.
DETAILED DESCRIPTION
[0031] The detailed description of various exemplary embodiments of the disclosure is described herein with reference to the accompanying drawings. It should be noted that the embodiments are described herein in such details as to clearly communicate the disclosure. However, the amount of details provided herein is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure as defined by the appended claims.
[0032] It is also to be understood that various arrangements may be devised that, although not explicitly described or shown herein, embody the principles of the present disclosure. Moreover, all statements herein reciting principles, aspects, and embodiments of the present disclosure, as well as specific examples, are intended to encompass equivalents thereof.
[0033] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a",” “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises,” “comprising,” “includes” and/or “including,” when used herein, specify the presence of stated features, integers, steps, operations, elements and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof.
[0034] It should also be noted that in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
[0035] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which example embodiments belong. It will be further understood that terms, e.g., those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
[0036] FIG. 1 illustrates the winding device cordoning arrangement with central support structure. Winding device has lot of moving objects and hence, should be cordoned all around its moving boundaries. There is a central circular plate 101 which enables the mounting of essential sub-components of winding device. This central circular plate 101 is supported by a central support structure 102 at bottom along with a base pad 103. On extreme ends of winding device, vertical cordoning poles 104 are provided which mark the outer periphery of winding device. The vertical cordoning poles 104 are placed at the end of horizontal cordoning beams 105.
[0037] There is a provision of U-type base connection 106 which gives support to each horizontal cordoning beam 105 by allowing the fastening of cordoning beam support at bottom through this U-type base connection. At the bottom of each cordoning beam support 108, there is a cordoning beam base pad 109. The base pads 109 provided at bottom of support and cordoning structure provide better grip and vibration free assembly. For keeping two horizontal cordoning beams 105 together, a parallel beam support is used which is fastened through holes 107 provided for this purpose.
[0038] Figure 2, illustrates the motoring arrangement on central circular plate 220. At the centre of this circular plate 220, there is a central mandril 201 which enables the mounting of various motors and enables the revolution of arms. There are two rotating arms, one primary rotating arm 202 and the other is secondary rotating arm 203.
[0039] The primary rotating arm 202 is connected to central mandril 201 through primary arm drive motor 204, while the secondary rotating arm 203 is connected to central mandril 201 through secondary arm drive motor 205. For creating a high temperature superconducting (HTS) coil, HTS wire in spool is required to be mounted on spool mounting support 214, 215 of each of the primary and secondary rotating arms 202, 203. The primary and secondary spool base plates 216, 217 are also provided at bottom of spool mounting supports to contain the spools and give them bottom rest. The primary and secondary spools can be moved near to or farther from central mandril in forward and reverse directions (FWD/REV) over primary and secondary arm rails 206, 207 with the help of guide bushes 208, 209 provided on each of primary and secondary rotating arms 202, 203.
[0040] On body of primary and secondary rotating arms 202, 203, various holes 210 are provided for passage of instrumentation cables 211. On rear end of each of primary and rotating arms 202, 203, there is a control motor used for creating tension in high temperature superconducting (HTS) wire during winding process. For primary arm 202, this motor is designated as primary arm wire tension control motor 212, whereas for secondary arm 203, the motor is designated as secondary arm wire tension control motor 213. The whole motoring arrangement is placed over and through central circular plate 220. The primary rotating arm 202, rotates over central circular plate 220 through a roller wheel 219 supported by roller wheel support 218.
[0041] Figure 3, illustrates the high temperature superconducting (HTS) coil former and high temperature superconducting (HTS) wire spools mounting on central circular plate 313. At the centre of circular plate 313, there is a central mandril 301 through which primary rotating arm 305 and secondary rotating arm 306 are connected through primary and secondary arm drive motors 302, 304 respectively. The primary rotating arm 305, rotates over central circular plate 313 through a roller wheel 307 supported by roller wheel support 303.
[0042] A double pancake racetrack shape high temperature superconducting (HTS) coil is created on and around race track shape coil former 312 as shown in the drawing. This coil former is fastened over the hole 310 provided for fastening the former support 311 on central mandril 301. Two high temperature superconducting (HTS) wire spools are mounted on primary and secondary rotating arms. These spools are designated as primary and secondary wire spools based on the arm on which it is mounted, i.e. the spool mounted on primary arm is designated as primary wire spool 308 whereas the spool mounted on secondary arm is designated as secondary wire spool 309.
[0043] Figures 4, illustrates a mountain arrangement with cordoning beams. At the centre of circular plate 401, there is a central mandril 402 through which primary rotating arm 403 and secondary rotating arm 404 are connected via primary and secondary arm drive motors respectively. The primary rotating arm 403, rotates over central circular plate 401 through a roller wheel 405 supported by roller wheel support. This central circular plate 401 is supported by a central support structure 412 at bottom along with a base pad 413.
[0044] On extreme ends of winding device, vertical cordoning poles 406 are provided which mark the outer periphery of winding device. These vertical poles 406 are placed at the end of horizontal cordoning beams 407. There is a provision of U-type base connection 408 which gives support to each horizontal cordoning beams 407 by allowing the fastening of cordoning beam support 410 at bottom through this U-type base connection. At the bottom of each cordoning beam support, there is a cordoning beam base pad 411. For keeping two horizontal cordoning beams 407 together, a parallel beam support is used which is fastened through holes 409 provided for this purpose.
[0045] Figure 5, illustrates the complete setup of high temperature superconducting (HTS) coil winding device. The central circular plate 501 enables the mounting of essential sub-components of winding device. This central circular plate 501 is supported by a central support structure 502 at bottom along with a base pad 503. On extreme ends of winding device, vertical cordoning poles 504 are provided which mark the outer periphery of winding device. These vertical cordoning poles 504 are placed at the end of horizontal cordoning beams 505. There is a provision of U-type base connection 506 which gives support to each horizontal cordoning beam 505 by allowing the fastening of cordoning beam support at bottom through this U-type base connection 506. At the bottom of each cordoning beam support 508, there is a cordoning beam base pad 509.
[0046] The base pad 509 provided at bottom of support and cordoning structure provide better grip and vibration free assembly. For keeping two horizontal cordoning beams 505 together, a parallel beam support 507 is used which is fastened through holes provided for this purpose. At the centre of circular plate, there is a central mandril 518 through which primary rotating arm 510 and secondary rotating arm 514 are connected through primary and secondary arm drive motors 511, 515 respectively. The primary rotating arm, rotates over central circular plate through a roller wheel supported by roller wheel support.
[0047] The high temperature superconducting (HTS) coil with racetrack shape former 520 is fastened over the hole provided for fastening the former support 519 on central mandril 518. The primary and secondary wire spools 513, 516 are mounted on primary and secondary rotating arms 510, 514. On rear end of each of primary and secondary rotating arms 510, 514, there is a control motor used for creating tension in high temperature superconducting (HTS) wire during winding process. For primary arm 510, this motor is designated as primary arm wire tension control motor 512, whereas for secondary arm 514, the motor is designated as secondary arm wire tension control motor 517.
[0048] In an aspect, the present disclosure is used to manufacture high temperature superconducting coils with former sizes upto 1500 mm length and 500 mm width.
[0049] In an aspect, the jointless double pancake coil winding is manufactured with maximum length of high temperature superconducting wire upto 1500 m with minimum bending radius of 10 mm and above which is in-built in the coil former.
[0050] In an aspect, the winding tensile stress of is upto 1200 MPa to high temperature superconducting wire during winding process.
[0051] It an aspect, the high temperature superconducting wire spools 513, 516 is of sizes upto 1000 mm on spool mounting arrangement of primary and secondary rotating arms 510, 514.
[0052] In an aspect, the adjustment at central mandril 518 is from dead minimum to 250 mm and height adjustment from dead minimum to 100 mm for racetrack shape coil former 520.
[0053] With the winding device, the following technical advantages are obtained.
[0054] The high temperature superconducting coils exhibiting absolute mechanical integrity in all conditions of intended electromagnetic forces and winding and operational stresses are obtained.
[0055] The high temperature superconducting coils with vibration free operational performance are obtained.
[0056] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

Claims:We claim:
1. The winding device for fabrication of high temperature superconducting field coils, comprising:
a central mandril (518) provided over a central circular plate (501) to mount components of a former of high temperature superconducting field coils;
a primary rotating arm (510) connected to the central mandril (518) through a primary rotating arm drive motor (511);
a secondary rotating arm (514) connected to the central mandril (518) through a secondary rotating arm drive motor (517);
a racetrack shaped coil former (520) fastened over a hole provided for fastening a coil former support (519) on the central mandril (518); and
a cordoning arrangement and a central support structure (502) to mount the central circular plate (501).
2. The winding device as claimed in claim 1, wherein the central circular plate (501) is supported over the central support structure (502) and whole setup is cordoned by multiple vertical cordoning poles (504) and multiple horizontal cordoning beams (505) is arranged around the periphery of winding device.
3. The winding device as claimed in claim 1 and 2, wherein the two horizontal cordoning beams (505) are joined together by a parallel beam support (507).
4. The winding device as claimed in claim 2 and 3, wherein a U-type base connection (506) gives support to each horizontal cordoning beam (505) by fastening the cordoning beam support (508) at bottom through this U-type base connection (506).
5. The winding device as claimed in claim 1, wherein the primary rotating arm (510) rotates over central circular plate (501) through a roller wheel supported by roller wheel support.
6. The winding device as claimed in claim 1, wherein a primary wire spool (513) and secondary wire spools (516) are mounted on primary and secondary rotating arms (510), (514) respectively.
7. The winding device as claimed in claim 1, wherein the primary and secondary rotating arms (510), (514) moves forward and in reverse motion over rails and tension control through the primary rotating arm drive motor (511) and secondary rotating arm drive motor (517).
8. The winding device as claimed in claim 1, wherein the racetrack shape former (520) is fastened over top of central mandril (518) for making high temperature superconducting double pancake coil by drawing wire from the spools (513), (516) mounted on the primary and secondary rotating arm each (511), (514).
9. The winding device as claimed in claim 1, wherein the winding device is able to produce high temperature superconducting coils exhibiting absolute mechanical integrity in all conditions of intended electromagnetic forces and winding and operational stresses.
10. The winding device as claimed in claim 1, wherein the winding device is able to produce high temperature superconducting coils to show vibration free operational performance.