Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Open type permanent magnet module with leak stopping structure used for magnetic resonance wave spectrum analyzer

A technology of spectral analysis and magnetic resonance, applied in the field of open permanent magnet modules, can solve the problems of high maintenance cost, large volume and weight, and achieve the effect of low cost, small volume and light weight

Inactive Publication Date: 2009-01-14
HARBIN INST OF TECH
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of large volume and weight and high maintenance cost of superconducting magnets used in existing magnetic resonance spectrum analysis equipment, the present invention provides an open permanent magnet with a plugging structure for magnetic resonance spectrum analyzers. magnet module

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
  • Open type permanent magnet module with leak stopping structure used for magnetic resonance wave spectrum analyzer

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0006] Specific embodiment 1: Referring to Fig. 1, this embodiment consists of a C-shaped yoke 1, an upper magnet 2 and a lower magnet 3, and the upper magnet 2 consists of an upper ring cylindrical magnetic shell 2-1 and an upper magnetic core 2-2 , magnetic pole 2-3 and shim coil 2-4, the upper ring cylindrical magnetic shell 2-1 is arranged on the lower end surface of the upper arm of the C-shaped magnetic yoke 1, and the magnetization direction of the upper ring cylindrical magnetic shell 2-1 is close to The parallel to the vertical direction of the upper arm of the C-shaped magnetic yoke 1 gradually changes to the perpendicular to the vertical direction close to the imaging space 4, the upper magnetic core 2-2 is arranged in the upper ring cylindrical magnetic shell 2-1 and the upper magnetic core 2- The upper end surface of 2 is arranged on the lower end surface of the upper arm of C-shaped magnetic yoke 1, the magnetization direction of upper magnetic core 2-2 is paralle...

specific Embodiment approach 2

[0008] Specific embodiment two: referring to Fig. 1, the upper magnet 2 and the lower magnet 3 of the present embodiment have increased gradient coils 2-5 respectively on the basis of specific embodiment one, and two gradient coils 2-5 are respectively arranged in the imaging space 4 In the position close to the magnetic pole surface. Part of the shimming function of the shimming coil can be realized by the gradient coil 2-5, the shimming coil 2-4 and the gradient coil 2-5 are all arranged in the imaging space 4 near the magnetic pole surface, and the shimming coil 2- 4 Relatively close to the magnetic pole 2-3 or the gradient coil 2-5 relatively close to the magnetic pole 2-3 can increase the shimming accuracy, and some non-magnetic permeability can be filled between the gradient coil 2-5 and the shim coil 2-4 substance.

specific Embodiment approach 3

[0009] Embodiment 3: Referring to FIG. 2 , this embodiment adds a plurality of magnetic sheets 5 on the basis of Embodiment 1, and each magnetic sheet 5 is respectively arranged on the surface of the magnetic pole 2 - 3 near the end of the imaging space 4 . The magnetic sheet 5 is used for shimming, and the magnetic sheet 5 may be partially or completely replaced by an iron sheet.

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 provides an open permanent magnet module which is provided with an anti-leakage structure and used for a magnetic resonance spectrum analyser, in particular to the open permanent magnet module which solves the problems that a superconducting magnet adopted by the existing magnetic resonance spectrum analysis equipment has large volume and weight and high maintenance cost. The magnetization direction of an upper cylindrical magnetic shell is gradually changed from being parallel to the vertical direction close to a C-shaped magnetic yoke upper arm to being vertical to the vertical direction; an upper magnetic core is arranged inside the upper cylindrical magnetic shell; the magnetization direction of the upper magnetic core is parallel to the vertical direction; the upper end surface of a magnetic core is arranged on the lower end surface of the upper magnetic core; the lower end surface of the magnetic pole is a convex-concave ring-shaped structure; a shim coil is arranged at the position close to the lower end surface of the magnetic pole; the structure of the lower magnet is the same with that of the upper magnet; furthermore, the lower magnet and the upper magnet are arranged symmetrically in the upper and lower direction on the lower end surface of the C-shaped magnetic yoke; the magnetization direction of the lower cylindrical magnetic shell of the lower magnet and the magnetization direction of the upper cylindrical magnetic shell are symmetric in the upper and lower direction. The magnetization direction of the lower magnetic core of the lower magnet is the same with that of the upper magnetic core.

Description

technical field [0001] The invention relates to an open permanent magnet module. Background technique [0002] At present, most of the magnet modules used for magnetic resonance spectroscopy use superconducting magnets, because the magnetic field provided by superconducting magnets has the advantage of good uniformity, which can meet the requirements of material structure analysis, but superconducting magnets also have large volume and weight, The disadvantage of higher maintenance costs. At present, the permanent magnet module used in the spectrometer for industrial magnetic resonance analysis cannot meet the high-performance requirements of magnetic resonance spectroscopy because the uniformity of the main magnetic field provided is poorer than that of superconducting magnets. Contents of the invention [0003] In order to solve the problems of large volume and weight and high maintenance cost of the superconducting magnets used in the existing magnetic resonance spectr...

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): H01F7/02G01R33/383
Inventor 宋枭禹郭斌柴凤
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com