Current lead structure of superconducting magnet and manufacturing method thereof and magnetic resonance equipment
A technology of current leads and superconducting magnets, which is applied in superconducting magnets/coils, coil manufacturing, magnetic resonance measurement, etc., and can solve problems such as high cost, difficult implementation of plasma spraying process, and complicated process
Active Publication Date: 2019-08-09
SIEMENS SHENZHEN MAGNETIC RESONANCE
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Problems solved by technology
[0005] But in the above method, the plasma spraying process is difficult to implement and the cost is high
In addition, in the above method, it is necessary to use three different methods of vacuum brazing, soldering and brazing, and to perform welding in three times. The process is complicated, and the parts to be connected must be heated above the melting point of the solder, which is a Time-consuming step and requires proper process equipment
Method used
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[0025] In order to make the purpose, technical solution and advantages of the present invention clearer, the following examples are given to further describe the present invention in detail.
[0026] figure 1 A cryogenic vacuum container 1 for holding magnetic coils of an MRI system is illustrated. The cryogen vessel 10 contains a liquid cryogen, such as liquid helium. A heat shielding layer 20 is arranged outside the cryogen container 10 , and the heat shielding layer 20 is used to reduce the conduction or convection of the cryogen container 10 and reduce the heat conduction from the ambient temperature to the cryogen. Furthermore, a vacuum chamber 30 is provided outside the heat shielding layer. In addition, a turret allowing entry into the cryogen container 10 from the outside is provided on the upper portion of the cryogenic container. The turret is used to provide access for the current leads and other superconducting coil wiring contained within the cryogen vessel, an...
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The invention provides a current lead structure of a superconducting magnet and a manufacturing method thereof and magnetic resonance equipment. The current lead structure of the superconducting magnet comprises a positive electrode tube which is used for being connected with the positive electrode end of the superconducting magnet; an adaptor which is made of an insulating and thermally conductive material and arranged on the outer surface of the positive electrode tube; a negative electrode tube which is used for being connective with the negative electrode end of the superconducting magnet,wherein the negative electrode tube is provided with a hollow cylinder, and the positive electrode tube and the adapter are inserted into the cylinder; and a cooling member which is arranged along the radial direction of the negative electrode tube and is connected with the negative electrode tube and the positive electrode tube by the adapter, wherein a metal coating layer is arranged on the contact surface of the adapter and the positive electrode tube and the contact surface of the adapter and the cooling member, and the adapter and the positive electrode tube and the adapter and the cooling member are respectively welded together by using the metal coating layer.
Description
technical field [0001] The invention relates to a current lead wire structure of a superconducting magnet, a manufacturing method thereof and a magnetic resonance device. Background technique [0002] At present, in the magnet of the existing magnetic resonance imaging system, it is necessary to provide a current lead for supplying power to the superconducting coil inside the magnet and an exhaust channel for discharging the quench gas outside the magnet. The current lead includes a negative tube and a positive tube disposed within the negative tube. In order to cool the positive tube to a predetermined temperature, it is necessary to connect the positive tube to a cooling element connected to a refrigerator. [0003] In the connection between the positive tube and the cooling element, usually firstly use aluminum oxide to plasma spray the part of the positive tube of the stainless steel tube that is in contact with the cooling element. Then, the cathode tube was plasma sp...
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Patent Timeline
Login to View More IPC IPC(8): H01F6/06H01F6/04H01F41/00H01F41/12G01R33/3815G01R33/38
CPCH01F6/065H01F6/04H01F41/00H01F41/125G01R33/3815G01R33/3804
Inventor 江乐赖碧翚段青
Owner SIEMENS SHENZHEN MAGNETIC RESONANCE