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A preparation method of high current density stacked high temperature superconducting degaussing cable

A high-current density, high-temperature superconducting technology, applied in the usage of superconducting elements, superconducting devices, cable/conductor manufacturing, etc., can solve the problems of large volume, weight and resistance loss, and achieve low power supply, simplified structure, The effect of increasing the current carrying density

Active Publication Date: 2020-02-21
EASTERN SUPERCONDUCTOR SCI & TECH SUZHOU CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The above-mentioned disclosed and existing degaussing cables are mostly based on metal materials, such as copper-aluminum cables. The degaussing cables are made of a resistive cable core, which has a large volume and weight and resistance loss, and requires higher power Supporting power supply

Method used

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  • A preparation method of high current density stacked high temperature superconducting degaussing cable
  • A preparation method of high current density stacked high temperature superconducting degaussing cable
  • A preparation method of high current density stacked high temperature superconducting degaussing cable

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preparation example Construction

[0044] A method for preparing a high-current-density stacked high-temperature superconducting degaussing cable. The high-temperature superconducting degaussing cable includes a core body 10, an insulating layer 11, an isolation belt, a liquid nitrogen channel 12, and a low-temperature degaussing cable from inside to outside in the radial direction. tile pipe and outer protective cover 13, the preparation method comprises the following steps:

[0045] Step 1, the core body is formed by stacking superconducting tapes; using the characteristics of the critical current Ic of the superconducting tapes changing with the magnetic field, according to the magnitude and direction of the operating current of the core body, the magnitude and magnitude of the magnetic field on the core body of the HTS degaussing cable are determined direction, and then determine the critical current of the core; according to the critical current and operating margin of the core, iteratively calculate the op...

Embodiment 1

[0070] Such as Figure 3a with 3b As shown, the core is obtained by stacking n layers of superconducting strips with a width of w and a thickness of d in parallel to form a stacked superconductor with a rectangular cross section, and then twisting, wherein nd and w are close to or equal in size. The constraint of twisting is to comprehensively consider the twisting stress in the tangential direction of the superconducting strip and the comprehensive experimental value of the bending diameter of the core along the length direction. The twisted stacked superconductor is shaped and fixed by winding the copper wire, and a flexible gasket is used at the joint between the copper wire and the stacked superconductor to disperse the stress generated by the fixing of the copper wire. The copper wire is fixed with multiple turns to shape it. After the core is twisted, it can not only resist part of the electromagnetic wave interference from the outside, but also reduce the mutual inter...

Embodiment 2

[0072] Such as Figure 4a with 4b As shown, the core body is a superconducting conductor block with a combined square cross section formed by stacking four groups of stacked superconductors, and each group of stacked superconductors is composed of n layers of superconducting tapes with a width of w and a thickness of d stacked in parallel. , and the cross-section of each group of stacked superconductors is square, where nd and w are close to or equal in size. The stacking directions of two adjacent stacked superconductors are perpendicular to each other, which can resist part of the electromagnetic wave interference from the outside world, and can also reduce the mutual interference between the superconducting strips. The stacked cores are fixed in the isolation belt.

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Abstract

The invention relates to a preparation method of a high current density stacked high temperature superconducting degaussing cable which can load high current, and belongs to the field of high temperature superconducting degaussing cables. The preparation method comprises the following steps: determining the number of superconducting tapes; determining the thickness of an insulating layer and a winding structure of the insulating layer, and performing eliminating treatment on the insulating layer; selecting nylon or fluoroplastics to wind to serve as an isolating tape, and winding the outer side of the insulating layer with the isolating tape; integrating a core body which is wound with the insulating layer and the isolating tape in a low-temperature Dewar tube; a liquid nitrogen channel isreserved between the low-temperature Dewar tube and the isolating tape; an outer protective sleeve is arranged on the outer side of the low-temperature Dewar tube. According to the preparation methodof the high current density stacked high temperature superconducting degaussing cable, a stacked cable core body structure is adopted, so that the current density of a current-carrying conductor canbe further improved; the high current density stacked high temperature superconducting degaussing cable has lower weight and smaller size; moreover, the structure is simplified and the production is facilitated.

Description

technical field [0001] The invention relates to a preparation method of a stacked high-temperature superconducting degaussing cable capable of carrying a large current with high current density, and belongs to the field of high-temperature superconducting degaussing cables. Background technique [0002] Newly built and repaired ships, as well as ships that have been used for a certain period of time, must be degaussed to defend against attacks by magnetic weapons (such as magnetic induction mines) in water and to be discovered by magnetic detection instruments to ensure the safety of ship navigation. There are two methods of degaussing: (1) Temporary coil degaussing method: used to offset the inherent magnetic field of the ship, performed by the degaussing ship and degaussing station. The degaussing station or ship is equipped with degaussing generator sets, degaussing coils, magnetic field detection equipment, control devices, etc. Generally, the degaussing cable should be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00H01B12/02
CPCH01B12/02H01B13/00Y02E40/60
Inventor 陈慧娟包颖李宁袁文蔡渊莫思铭
Owner EASTERN SUPERCONDUCTOR SCI & TECH SUZHOU CO LTD
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