EP0076887A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Superconducting magnet and method of manufacture thereof
Assignee: Toshiba Corp
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Filing: 1982-04-06
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Granted: —
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Expires: 2002-04-06
Abstract
Abstract A superconducting magnet, applied for a train side permanent magnet for a magnetically levitated train as one embodiment of the invention, comprises a coil structure (14) including a superconducting wire (16) wound into a form of a race track and impregnated with epoxy resin (18), an annular vessel member (24) accommodating the coil structure (14), and a spacing member (20) rigidly mounted in the vessel member (24) so as to divide the interior thereof into first and second spaces (25, 26). The coil structure (14) is securely sealed in the first space (25), and the second space (26) constitutes a liquid helium path.
Inventors
- 👤 Susumu Mine
- 👤 Takao Ishizaka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 05:23
CPC Classifications
H; H01; H01F; H01F6/00; H01F6/04; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/879; Y10S505/917; Y10S505/924; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014; Y10T29/4902; Y10T29/49071
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
152 words
A superconducting magnet comprising a coil structure (14) which includes a superconducting wire (16) wound a predetermined number of turns into a closed loop form and which is impregnated with a hardenable material (18), and an annular vessel means (24, 66) accommodating said coil structure (14) in the inner space thereof and isolating said coil structure (14) from atmospheric conditions, said coil structure (14) being cooled within said vessel member (24, 66) to a temperature below the transition temperature by a coolant (28), characterized in that the inner space of said vessel member (24, 66) is divided into at least first and second annular spaces which are independently and hermetically sealed, said coil structure (14) is sealed in the first annular space (27, 47, 65), in a face-contact manner, to be immovably positioned within said vessel member (24, 66), and said coolant (28) flows through said second annular space (26, 42, 56).
Claim 2
Dependent Claim
152 words
A superconducting magnet comprising a coil structure (14) which includes a superconducting wire (16) wound a predetermined number of turns into a closed loop form and which is impregnated with a hardenable material (18), and an annular vessel means (24, 66) accommodating said coil structure (14) in the inner space thereof and isolating said coil structure (14) from atmospheric conditions, said coil structure (14) being cooled within said vessel member (24, 66) to a temperature below the transition temperature by a coolant (28), characterized in that the inner space of said vessel member (24, 66) is divided into at least first and second annular spaces which are independently and hermetically sealed, said coil structure (14) is sealed in the first annular space (27, 47, 65), in a face-contact manner, to be immovably positioned within said vessel member (24, 66), and said coolant (28) flows through said second annular space (26, 42, 56).
Claim 3
Dependent Claim
43 words
A superconducting magnet according to claim 1, characterized in that said coil structure (14) is formed in a rectangular profile, by closely winding said superconducting coil (16) into said closed loop form, and impregnating said superconducting coil (16) with said hardenable material (18).
Claim 4
Dependent Claim
71 words
A superconducting magnet according to claim 2, characterized in that said vessel member (24) includes: winding former means (10, 50), shaped in the closed loop form, for accommodating said coil structure (14) in continuous face-contact manner, said winding former means (10, 50) having an open area (12) at a peripheral section thereof; and a cover member (22, 64) mounted on the open area (12) of said winding former means (10, 50).
Claim 5
Dependent Claim
60 words
A superconducting magnet according to claim 3, characterized in that said winding former means (10) includes: a first plate portion (10c) opposing the open area (12); and second and third plate portions (10a, lOb) which are integral with said first plate portion (10c) and which extend substantialy in a perpendicular direction from both ends of said first plate portion (lOc).
Claim 6
Dependent Claim
44 words
A superconducting magnet according to claim 4, characterized in that said coil structure (14) has three surfaces which are respectively made contact with said first to third plate portions (10c, 10a, 10b), and one surface which is spaced apart from said cover member (22).
Claim 7
Dependent Claim
73 words
A superconducting magnet according to claim 5, characterized in that said coil holding means (20) includes a plate portion (20c) in continuous face-contact with said one surface of said coil structure (14), said coil structure (14) is accommodated in a hermetically sealed space which is defined by said first to third plate portions (10c, 10a, lOb) of said winding former means (10) and said plate portion (20c) of said coil holding means (20).
Claim 8
Dependent Claim
68 words
A superconducting magnet according to claim 4, characterized in that said coil structure (14) has two surfaces which are respectively made contact with the surfaces of said second and third plate portions (10a, lOb) of said winding former means (10), one surface which is made contact with one surface of said cover member (22), and one surface spaced apart from one surface of said first plate portion (10c).
Claim 9
Dependent Claim
77 words
A superconducting magnet according to claim 7, characterized in that said coil holding means includes a plate portion (40) having a surface in contact with said one surface of said coil structure (14), and said coil structure (14) is accommodated in a hermetically sealed space which is defined by said second and third plate portions (10a, lOb) of said winding former means (10), said cover member (22) and said plate portion (40) of said coil holding means.
Claim 10
Dependent Claim
87 words
A superconducting magnet according to claim 3, characterized in that said winding former means (50) includes a hollow annular pipe member (52) which has an open area (12) of a predetermined width at a peripheral section thereof and which has a C-shaped sectional profile, said coil holding means includes groove defining means (54) for defining a substantially rectangular channel-like groove which has an opening corresponding to the open area (12) of said pipe member (52), said groove defining means (54) being coupled to said open area (12).
Claim 11
Dependent Claim
25 words
A superconducting magnet according to claim 9, characterized in that said pipe member (52) and said groove defining means (54) are integral with each other.
Claim 12
Dependent Claim
29 words
A superconducting magnet according to claim 9, characterized in that said pipe member (52) and said groove defining means (54) define a closed space corresponding to the coolant path.
Claim 13
Dependent Claim
39 words
A superconducting magnet according to claim 11, characterized in that said groove defining means (54) securely supports said coil structure (14) having a rectangular sectional profile in face-contact with three of the four surfaces of said coil structure (14).
Claim 14
Dependent Claim
49 words
A superconducting magnet according to claim 12, characterized in that the remaining surface of said coil structure (14) is in face-contact with said cover member (64), whereby said coil structure (14) is sealed in a closed space defined by said groove defining means (54) and said cover member. (64).
Claim 15
Dependent Claim
25 words
A superconducting magnet according to claim 13, characterized in that said cover member (64) has an injection means (48) for injecting said hardenable material (18).
Claim 16
Independent Claim
148 words
A method for manufacturing a superconducting magnet, in which a coil structure (14), including a superconducting wire (16) wound into a closed loop form and impregnated with a hardenable material (18), is accommodated in a vessel member (24, 66) and cooled to a temperature below the transition temperature by a coolant (28), characterized in that said method comprises a first step of disposing the coil which is formed of said superconducting wire (16) in said vessel member (24, 26), a second step of forming at least one hermetically sealed space (25, 47, 65) extending in a closed loop form within said vessel (24, 26) for rigidly installing said coil in said hermetically sealed space, and a third step of injecting said hardenable material (18) into said hermetically sealed space (25, 47, 65) for impregnating said coil (16) with said hardenable material (18), thereby forming said coil structure (14).
Claim 17
Independent Claim
148 words
A method for manufacturing a superconducting magnet, in which a coil structure (14), including a superconducting wire (16) wound into a closed loop form and impregnated with a hardenable material (18), is accommodated in a vessel member (24, 66) and cooled to a temperature below the transition temperature by a coolant (28), characterized in that said method comprises a first step of disposing the coil which is formed of said superconducting wire (16) in said vessel member (24, 26), a second step of forming at least one hermetically sealed space (25, 47, 65) extending in a closed loop form within said vessel (24, 26) for rigidly installing said coil in said hermetically sealed space, and a third step of injecting said hardenable material (18) into said hermetically sealed space (25, 47, 65) for impregnating said coil (16) with said hardenable material (18), thereby forming said coil structure (14).
Claim 18
Dependent Claim
82 words
A method according to claim 15, characterized in that said vessel member (24, 66) includes a winding former member (10, 50) which is shaped in the closed loop form and which has an open area (12) at a peripheral section thereof, and a cover member (22, 64) which is mounted on the open area (12) of said winding former member (10, 50), and said coil (16) is formed by being wound within said winding former member (10, 50) in said first step.
Claim 19
Dependent Claim
21 words
A method according to claim 16, characterized in that said coil (16) is densely wound to have a rectangular sectional profile.
Claim 20
Dependent Claim
76 words
A method according to claim 17, characterized in that said second step includes a step of mounting a spacing plate member (20) in said winding former member (10) such that three of the four surfaces of said coil (16) formed within said winding former member (10) are in face-contact with the inner surfaces of said winding former member (10) and the remaining surface of said coil (16) is in face-contact with said spacing plate member (20).
Claim 21
Dependent Claim
46 words
A method according to claim 18, characterized in that, after said step of mounting said spacing plate member (20) is completed, said cover member (22) is secured to said open area (12) of said winding former member (10) so as to form a coolant path (26).
Claim 22
Dependent Claim
91 words
A method according to claim 17, characterized in that said first step includes a step of mounting a plate member (40) which defines a coolant path (42) in said winding former member (10) prior to forming said coil (16), and said second step includes a step of mounting said cover member (22) on the open area (12) of said winding former member (10), said coil (16) being sealed in a hermetically sealed space which is defined by said winding former member (10), said plate member (40) and said cover member (22).
Claim 23
Dependent Claim
105 words
A method according to claim 17, characterized in that said winding former member (50) includes a hollow annular pipe member (52) which has an open area (12) of a predetermined width at a peripheral section thereof and which as a C-shaped sectional profile, and groove defining member (54) which defines a substantially rectangular channel-like groove and which is coupled to the open area (12); said second step includes a step of mounting said cover member (64) on the open area (12), said coil (16) being sealed in a hermetically sealed space which is defined by said groove defining member (54) and said cover member (64).
References Cited (Backward Citations)
US4079187A
Cited
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