US3859566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for removing energy from a superconducting magnet
Assignee: Siemens AG
•
Filing: 1973-11-21
•
Granted: 1975-01-07
•
Expires: 1993-11-21
Abstract
Abstract An arrangement for removing energy from a superconducting magnet system of the type having a plurality of series connected individual magnets each magnet having a plurality of resistors associated therewith for dissipating energy, in which a switch is associated with each magnet in the series circuit for disconnecting it from that circuit allowing each individual magnet to be separately de-energized without affecting other magnets thereby reducing the amount of additional coolant required in the system.
Inventors
- 👤 Siegfried Gassong
- 👤 Dieter Kullmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:36
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/001; H01; H01F; H01F6/00; H01F6/006; Y; Y02; Y02E; Y02E40/00; Y02E40/60; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/85
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
125 words
In a superconducting magnet system wherein a plurality of individual magnets are connected in series and the series combination supplied by a common power supply through a first switch, each individual magnet having associated therewith a superconductivity monitoring device and a plurality of resistors for de-energization, said first switch being adapted to open in response to any one of said monitoring devices providing an output indicating normal conduction in its individual magnet, means to provide improved operation of the system during a quench condition comprising: a. a pluralIty of switches, one being installed in each line connecting an individual magnet with another individual magnet; and b. means responsive to an output from any of the monitoring devices to open all of said plurality of switches.
Claim 2
Dependent Claim
125 words
In a superconducting magnet system wherein a plurality of individual magnets are connected in series and the series combination supplied by a common power supply through a first switch, each individual magnet having associated therewith a superconductivity monitoring device and a plurality of resistors for de-energization, said first switch being adapted to open in response to any one of said monitoring devices providing an output indicating normal conduction in its individual magnet, means to provide improved operation of the system during a quench condition comprising: a. a pluralIty of switches, one being installed in each line connecting an individual magnet with another individual magnet; and b. means responsive to an output from any of the monitoring devices to open all of said plurality of switches.
Claim 3
Dependent Claim
18 words
The invention according to claim 1 wherein each of said individual magnets is placed in a separate cyrostat.
Claim 4
Dependent Claim
57 words
The invention according to claim 1 and further including a second plurality of switches, one being provided for each of said individual magnets coupling said magnets to ground when closed, said switches being normally open and responsive to said means for closing said first plurality of switches to close when said first plurality of switches are open.
Claim 5
Dependent Claim
43 words
The invention according to claim 1 wherein the resistances associated with each magnet comprise a shunt across the magnet comprised of the plurality of resistors and further including at least oe switch coupled to said plurality of resistors for changing the shunt resistance.
Claim 6
Dependent Claim
43 words
The invention according to claim 4 wherein said shunt comprises a high resistance resistor, and a low resistance resistor parallel thereto with said switch coupling one terminal of said first and second resistances whereby said second resistance may be removed from the shunt.
Claim 7
Dependent Claim
29 words
The invention according to claim 4 wherein said shunt comprises a high resistance in series with a low resistance and wherein said switch is placed across said high resistance.
Claim 8
Dependent Claim
35 words
The invention according to claim 5 wherein the resistance of said high resistance resistor is smaller than or equal to the ratio of the maximum permissible voltage at an individual magnet to its operating current.
Claim 9
Dependent Claim
39 words
The invention according to claim 7 wherein said system comprises n individual magnets and wherein the resistance of said second resistor is smaller than or equal to the (n - 1)th part of the resistance of said first resistor.
Claim 10
Independent Claim
141 words
A method of operating an arrangement for removing the energy from a superconducting magnet system wherein a plurality of individual magnets are connected in series and the series combination supplied by a common power supply through a first switch, each individual magnet having associated therewith a superconductivity monitoring device and a plurality of resistors for de-energization, said first switch being adapted to open in response to any one of said monitoring devices providing an output indicating normal conduction in its individual magnet, in response to an output from any one monitoring device comprising the steps of: a. disconnecting the power supply from the series magnet circuit. b. isolating each of the individual magnets from each other; c. grounding each of said individual magnets; and d. increasing the shunt resistance in at least the magnet whose monitoring device has provided an output.
Claim 11
Independent Claim
141 words
A method of operating an arrangement for removing the energy from a superconducting magnet system wherein a plurality of individual magnets are connected in series and the series combination supplied by a common power supply through a first switch, each individual magnet having associated therewith a superconductivity monitoring device and a plurality of resistors for de-energization, said first switch being adapted to open in response to any one of said monitoring devices providing an output indicating normal conduction in its individual magnet, in response to an output from any one monitoring device comprising the steps of: a. disconnecting the power supply from the series magnet circuit. b. isolating each of the individual magnets from each other; c. grounding each of said individual magnets; and d. increasing the shunt resistance in at least the magnet whose monitoring device has provided an output.
Claim 12
Dependent Claim
31 words
The invention according to claim 9 and further including the step of increasing the resistance in other individual magnet shunts in order to maintain a force balance within the magnet arrangement.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |