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System and method for quench protection of a cryo-free super conducting magnet

A technology of superconducting magnets and magnets, applied in the directions of superconducting magnets/coils, magnetic objects, emergency protection circuit devices, etc., can solve the problems of open magnetic field, excessively expensive, harmful stray fields, etc., and achieve the effect of avoiding potential damage

Inactive Publication Date: 2015-09-02
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods may be prohibitively expensive in large-scale production
Also, in MRI magnets, the diode-resistor shunt solution compromises stray fields during quench and can lead to field blowout

Method used

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  • System and method for quench protection of a cryo-free super conducting magnet
  • System and method for quench protection of a cryo-free super conducting magnet
  • System and method for quench protection of a cryo-free super conducting magnet

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Embodiment Construction

[0014] A further understanding of the exemplary embodiments may be obtained with reference to the following description and drawings, wherein like reference numerals refer to similar elements. Exemplary embodiments relate generally to methods and systems for protecting low temperature superconducting non-magnets during quench events.

[0015] figure 1 An exemplary system 100 for protecting a superconducting magnet 103 (eg, without a low-temperature superconducting magnet) during a quench event is shown, according to an exemplary embodiment of the invention. System 100 may include a first hermetic enclosure 101 and a second hermetic enclosure 102 (eg, a cryostat). The second hermetic housing 102 houses a magnet 103 and a sensor 105 . System 100 may also include an amplification device 107 (eg, relay coil, amplifier, etc.) to amplify the signal from sensor 105 .

[0016] The first hermetic enclosure 101 is connected to the second hermetic enclosure 102 via a valve 104 . The ...

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Abstract

A system including a first sealed housing with a first pressure and a second sealed housing with a second pressure. The first pressure is higher than the second pressure. The first sealed housing contains a predetermined gas and the second sealed housing contains a superconducting magnet. A sensor within the second housing monitors a voltage of parts of the magnet. When a processor determines a quenching event as a function of the monitored voltage, the processor actuates a valve that sealably connects the first and second housings. When the valve is in a first position, the first and second housings are sealed off from each other. When the valve is in a second position, the predetermined gas flows from the first housing into the second housing until a third pressure within the second housing is reached. The system can be used for protecting a cryo-free superconducting magnet.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application No. 61 / 746409, filed December 27, 2012, the contents of which are hereby incorporated by reference. technical field [0003] The present disclosure relates generally to a superconducting nuclear magnetic resonance (NMR) or magnetic resonance imaging (MRI) magnet operating in a cryo-free environment, and in particular to a method for preventing voltage breakdown during a quench event. systems, devices, arrangements and methods. Background technique [0004] Electrical breakdown of superconducting magnets operating in cryogenic environments poses a serious problem. The voltage developed between parts of the magnet during quench can reach thousands or tens of thousands of volts. If the magnet is produced correctly, the quench voltage is less than the breakdown voltage. In the absence of cryogenic conditions, the breakdown voltage is defined by the Pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/38G01R33/3815H01F6/02
CPCH01F6/02G01R33/288G01R33/3804G01R33/3815H02H7/001
Inventor A·艾哈迈托夫
Owner KONINKLJIJKE PHILIPS NV