Magnetic field adjusting device on high-openness superconduction magnetic resonance magnet

A technology of superconducting magnetic resonance and adjusting device, which is applied in the direction of measuring device, measuring magnetic variable, instrument, etc., can solve the problems of large leakage magnetic field range, processing error of main magnet, difficulty in designing superconducting magnet, etc.

Inactive Publication Date: 2012-07-18
NINGBO JANSEN MECHANISM CORP
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the design of superconducting magnets with a high degree of openness is more difficult than ordinary superconducting magnets. The limitation of the degree of openness on the size of each part of the magnet leads to a more uneven magnetic field in the imaging area and a larger range of leakage magnetic fields. Superconducting coils and other ferromagnetic Material parts are subject to considerable magnetic forces
In order to compensate for the inhomogeneity of the magnetic field and reduce the range of the leakage magnetic field, it

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Magnetic field adjusting device on high-openness superconduction magnetic resonance magnet
  • Magnetic field adjusting device on high-openness superconduction magnetic resonance magnet
  • Magnetic field adjusting device on high-openness superconduction magnetic resonance magnet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0018] Implementation mode one: if figure 1 As shown, the magnetic field adjustment device on the high openness superconducting magnetic resonance magnet of the present invention includes a low-temperature Dewar 2 fixed on the iron yoke 1 and a superconducting coil 3 arranged in the low-temperature Dewar 2, wherein the above-mentioned iron A magnetic field adjustment device corresponding to the superconducting coil 3 is provided on the yoke 1, and the magnetic field adjustment device is composed of one or more components with high magnetic permeability. The above-mentioned magnetic field adjustment device is arranged inside the above-mentioned superconducting coil 3, and the above-mentioned magnetic field adjustment device includes an iron ring 4 fixedly connected on the iron yoke 1, and a material which is arranged in the iron ring 4 and whose magnetic permeability is close to air is fixed on the iron yoke 1 The fixing screw 5 and the adjusting block 6, the adjusting block 6 ...

Embodiment approach 2

[0024] Implementation mode two: if figure 2 with 3 As shown, the present embodiment is basically the same as Embodiment 1, except that the magnetic field adjustment device on the high-openness superconducting magnetic resonance magnet of the present invention includes a low-temperature Dewar 2 fixed on the iron yoke 1 and a low-temperature The superconducting coil 3 in the Dewar 2, wherein the iron yoke 1 is provided with a magnetic field adjustment device corresponding to the superconducting coil 3, and the magnetic field adjustment device is composed of a plurality of components with high magnetic permeability. The magnetic field adjusting device is arranged outside the superconducting coil 3 and fixed on the iron yoke 1 . The magnetic field adjusting device is an arc-shaped iron block 7 corresponding to the superconducting coil 3 .

[0025] In this embodiment, the iron block 7 with an asymmetric structure and adjustable left and right can adjust the lateral tension of abo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a magnetic field adjusting device on a high-openness superconduction magnetic resonance magnet. The design difficulty of the high-openness superconduction magnetic resonance magnet is large than that of the common superconduction magnetic resonance magnet, an imaging region has more non-uniform magnetic field and larger leakage magnetic field range due to the limit of the openness of the high-openness superconduction magnetic resonance magnet to sizes of all parts of the magnet, and a superconduction coil and other ferro magnetic materials bear sizable magnetic force. The invention discloses a magnetic field regulating device on the high-openness superconduction magnetic resonance magnet, which comprises a low-temperature dewar fixed on an iron yoke superconduction coil and a superconduction coil arranged in the low-temperature dewar, wherein a magnetic field regulating device corresponding to the superconduction coil is arranged on the iron yoke, and comprises one or more high-permeability components. By using the change of the ferro magnetic material to the magnetic field, the uniformity of the magnetic field of the imaging region is improved, and the size and the range of a leakage magnetic field are reduced.

Description

technical field [0001] The invention relates to a magnetic field adjustment device used on a high-openness superconducting magnetic resonance magnet. Background technique [0002] The magnetic resonance imaging system is a powerful imaging device, and the main magnet is one of its main hardware, which can provide a high-intensity, stable, and highly uniform magnetic field in a designated imaging area. In addition to meeting the above requirements, high-opening magnets can greatly eliminate the claustrophobic feeling of patients in clinical practice due to the low degree of closure in size, and bring convenience to scanning inspections, so they are more popular than ordinary magnets. [0003] However, the design of superconducting magnets with a high degree of openness is more difficult than ordinary superconducting magnets. The limitation of the degree of openness on the size of each part of the magnet leads to a more uneven magnetic field in the imaging area and a larger ra...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01R33/3815
Inventor 郑杰许建益华延芳何群
Owner NINGBO JANSEN MECHANISM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap