Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Non-contact type superconduction belt material critical current measuring device

A technology of superconducting tape and critical current, applied in the field of superconducting engineering, can solve the problems of large measurement error, high positioning accuracy, low efficiency, etc., and achieve the effect of reducing the complexity of design and improving the speed of tape running and measurement efficiency.

Active Publication Date: 2010-07-28
TSINGHUA UNIV
View PDF0 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the method in the prior art of measuring the magnetic induction intensity of the residual magnetic field of the superconducting strip in space and then back-calculating the critical current, that is, the Hall probe of "replacing the surface with points" is measured on the surface of the superconducting strip. The magnetic induction intensity of the residual magnetic field requires high positioning accuracy between the probe and the sample, large measurement errors, and low efficiency.

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
  • Non-contact type superconduction belt material critical current measuring device
  • Non-contact type superconduction belt material critical current measuring device
  • Non-contact type superconduction belt material critical current measuring device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The working principle, measurement process and test results of the non-contact superconducting strip critical current measuring device based on the magnetic circuit method will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] The schematic diagram of the embodiment of the non-contact superconducting strip critical current measuring device is as figure 1 As shown, the excitation magnetic circuit is on the left, and the detection magnetic circuit is on the right. The height of the central point of the sample slit 5 of the magnetic circuit is the same. In order to realize the continuous measurement of long strips, the first guide wheel 10 and the second guide wheel 11 installed on the base 12 cooperate with the wire-feeding equipment outside the liquid nitrogen container 14 and The take-up equipment constitutes a superconducting strip continuous transmission device, the first guide wheel 10 is on the left side of the exci...

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 belongs to the field of superconduction electrotechnics and particularly relates to a non-contact type superconduction belt material critical current measuring device. An excitation magnetic circuit and a probing magnetic circuit are fixed on a base in parallel, a magnetization slit central point of the excitation magnetic circuit has equal altitude with a sample slit central point of the probing magnetic circuit, an excitation magnetic circuit iron core and a magnetization slit form a closed excitation magnetic circuit, and a probing magnetic circuit iron core, a sample slit and a measurement slit form a closed probing magnetic circuit. On the basis of a cirtical current non-contact type measuring method of a magnetic circuit method, under a condition of liquid nitrogen and low temperature, a sample is magnetized at a magnetization slit of the excitation magnetic circuit for inducing a ring current, then the sample is placed in the sample slit of the probing magnetic circuit, magnetic induction generated by the probing magnetic circuit driven by the ring current is probed at the measurement slit of the probing magnetic circuit, and the probed magnetic induction and a standard sample are compared and back-calculated to obtain a sample critical current. The invention overcomes the defect that the accurate positioning of the sample and a probe is required in the prior art, has high measuring efficiency and is particularly suitable for continuously measuring an overlength superconduction belt material critical current.

Description

technical field [0001] The invention belongs to the field of superconducting electrical engineering, in particular to a non-contact critical current measuring device for superconducting strips. Background technique [0002] Critical current is the most basic parameter reflecting the current carrying capacity of superconducting strips. The commonly used measurement method is the "four-lead method", that is, to load a current at both ends of the sample and observe the voltage signal. As the current increases, the critical current of the superconducting strip is determined by observing the increase of the voltage and taking 1 microvolt per centimeter of strip length as the quench criterion. This method has a simple principle and is widely used in the measurement of short samples with a length of less than 10 cm at the laboratory level. At present, the industrial production of Bi-based high-temperature superconducting wires has been realized. The length of a single Bi-based hi...

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): G01R19/00G01R33/02G01R33/12
Inventor 顾晨韩征和邹圣楠
Owner TSINGHUA UNIV
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
Eureka Blog
Learn More
PatSnap group products