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Superconducting magnet device

A superconducting magnet and superconducting technology, applied in superconducting magnets/coils, superconducting parts, measuring devices, etc., can solve problems such as volume increase and internal temperature rise

Active Publication Date: 2018-05-11
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When this external heat is transferred to the inside of the cryostat 3, there is a possibility that the volume increases due to the vaporization of liquid helium and the internal temperature rises.

Method used

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Experimental program
Comparison scheme
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Embodiment approach 1

[0045] use Figure 1 to Figure 6 , the superconducting electromagnet device according to Embodiment 1 of the present invention will be described. figure 1 is a schematic diagram of a superconducting electromagnet setup. figure 2 as well as image 3 is a vertical sectional view of the superconducting electromagnet device. Figure 4 It is viewed from above to below in the vertical direction image 3 The top view of the A-A' section in . Figure 5 It is viewed from above to below in the vertical direction image 3 The top view of the BB' section in . Image 6 is a vertical cross-sectional view when rapid cooling occurs. In addition to showing the Figures 15-16In addition to the structure of the conventional superconducting electromagnet shown, a helium gas exhaust pipe 3 a , a heat transfer member 7 , and a convection preventing device described later are shown as one of the characteristic components in Embodiment 1 of the present invention. 9 and the structure of thei...

Embodiment approach 2

[0061] use Figure 7 to Figure 10 , a superconducting electromagnet device according to Embodiment 2 of the present invention will be described. Figure 7 is the vertical sectional view, Figure 8 yes Figure 7 The top view of the C-C' section datum in Figure 9 show Figure 7 The DD’ section in Figure 10 A vertical cross-sectional view at the time of rapid cooling is shown. In addition to showing the Figure 15 , Figure 16 , Figure 17 In addition to the structure of the conventional superconducting electromagnet shown, a helium gas exhaust pipe 3 a , a heat transfer member 7 , and a convection preventing device described later are shown as one of the characteristic components in Embodiment 2 of the present invention. 9 and their surrounding structures. Description of the same configuration as in Embodiment 1 is omitted.

[0062] The superconducting electromagnet device includes a superconducting coil 1, liquid helium 2, helium exhaust pipe 3a, vacuum container 4, ...

Embodiment approach 3

[0070] use Figure 11 to Figure 14 , Embodiment 3 of the present invention will be described. Figure 11 is the vertical sectional view, Figure 12 yes Figure 11 The top view of the E-E' section datum in Figure 13 show Figure 11 The F-F' section in Figure 14 A vertical cross-sectional view at the time of rapid cooling is shown. In addition to showing the Figure 15 , Figure 16 , Figure 17 In addition to the structure of the conventional superconducting electromagnet device shown, the helium gas exhaust pipe 3a, the heat transfer member 7, and the convection prevention member, which are one of the characteristic components in Embodiment 3 of the present invention, are also shown. 9 and the structures surrounding them.

[0071] The superconducting electromagnet device is equipped with a conventional structure such as superconducting coil 1, liquid helium 2, helium gas exhaust pipe 3a, vacuum container 4, heat shield 5, heat transfer member 7, and electrode 8, and a...

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Abstract

Provided is a superconducting electromagnet device with which it is possible to prevent damage attributable to quenching, while reducing helium consumption. Heat exchanging performance during transport is improved by providing a sheet-like convection-preventing member (9) which is disposed in such a way as to cover a helium gas exhausting tube (3a) for gaseous helium (6), above and / or below a heattransfer member (7) which transfers to the gaseous helium (6) heat that has penetrated in from the outside. In the event that quenching occurs, the convection-preventing member (9) is lifted upward in the exhaust tube, thereby ensuring a channel for the gaseous helium (6) and preventing an excessive increase in the internal pressure.

Description

technical field [0001] The invention relates to a superconducting electromagnet device, in particular to a superconducting electromagnet device for MRI using liquid helium to cool a superconducting coil. Background technique [0002] A superconducting magnet device is a device that generates a strong magnetic force by passing electricity through a superconducting coil through electrodes. In order to make the resistance of the superconducting coil zero, the superconducting coil needs to be cooled to the temperature of liquid helium. In order to generate a strong magnetic force by cooling the superconducting coil to the temperature of liquid helium, conventional superconducting electromagnet devices such as Figure 15 Shown are equipped with: superconducting coil 1; electrode 8, makes electric current flow to superconducting coil 1 when electrified; 1). [0003] When the liquid helium used for cooling is vaporized, the volume increases significantly compared to the liquid. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F6/02H01F6/04H01F6/06H01L39/04
CPCH01F6/04G01R33/288H01F6/02G01R33/3804G01R33/3815H01F6/06
Inventor 岩本直树田村一井上达也江口谅
Owner MITSUBISHI ELECTRIC CORP
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