CN105489314A - High-temperature superconducting twisted wire winding method - Google Patents

Abstract

The invention discloses a high-temperature superconducting twisted wire winding method. The winding method is characterized by comprising a step of strip cutting, wherein a high-temperature superconducting strip is cut into wire-shaped superconducting thin belts in a length direction; and a step of strip weaving, wherein the superconducting thin belts are weaved to form a new superconducting wire. According to the high-temperature superconducting twisted wire winding method, the macroscopic geometric structure of the superconducting strip is changed; the critical current of a superconducting magnet is improved in the application of the superconducting magnet; the alternating current loss is lowered, and the performance of the superconducting magnet is dramatically improved; and under the same condition, the cost for a user is equivalently reduced.

Description

A kind of high-temperature superconductor is turned round around wire winding method

Technical field

The present invention relates to superconduction electrician application, particularly a kind of high-temperature superconductor is turned round around wire winding method.

Background technology

Second-generation high-temperature superconductor ReBCO utilizes vacuum coating technology, a kind of coating superconductor that the method encapsulated by Multi-stacking compaction is produced.The thickness of superconducting tape is generally 50 ~ 100 microns, and width is 4 ~ 12 millimeters, and wherein the thickness of superconducting layer is only 1 ~ 2 micron.Under superconducting state, the maximum current that band can pass through is called as critical current, and this weighs the most important index of superconducting tape current-carrying capacity.For second-generation high-temperature superconductor, its critical current can along with vertical and be parallel to its surface external magnetic field increase and reduce, as shown in Figure 1.

Lower than under the superconducting state of its critical current, superconducting tape can reveal loss to alternating-current meter through-flow, i.e. " A.C.power loss ".A.C.power loss can affect the efficiency of superconducting apparatus greatly, is put forth effort in the electric equipment de-sign of superconduction to optimize the parameter reduced.Under equal conditions, the A.C.power loss of second generation high temperature band along with background magnetic field, particularly can increase rapidly perpendicular to the increase in the magnetic field of strip surface, as shown in Figure 2.

Therefore, by significantly can improve the performance of the aspect such as critical current and A.C.power loss to the optimization of background magnetic field.

Find through retrieval, current still not carried out by second-generation high-temperature superconductor cuts braiding with the technological process control improving its performance, also without disclosed patent and document.But the patent having part similar and document, its main contents are as follows:

Publication number is " CN1510698A ", name is called in the Chinese patent application of " Superconductive cable conductor assembled winding method ", disclose the method be wound on by many bands on cable core, it is for the essential difference applied for a patent with this paper: applying for a patent herein is split knitting forming again to superconducting tape, thus improves the performance of whole superconducting tape.

Publication number is " CN103578741A ", name is called in the Chinese patent application of " interchanging method of a kind of two superconducting tape magnetic plugs in parallel coiling ", disclose the interchanging method of a kind of superconducting tape magnetic plug in parallel coiling, and can complete transposition be realized, play the effect of inductance balance and current-sharing, be conducive to the capacity improving superconducting coil, strengthen the stability of superconducting coil.Applying for a patent herein is split knitting forming again to superconducting tape, thus improves the performance of whole superconducting tape.

Publication number is " CN102209924A ", name is called in the Chinese patent application of " bend-insensitive optical cable ", disclose a kind of bend-insensitive optical cable for transmitting light signal, applying for a patent herein is split knitting forming again to superconducting tape, thus improves the performance of whole superconducting tape.

This optical cable has and extends to the length LTOT of output from the input being suitable for receiving optical signals and comprise at least one monomode fiber, and described optical fiber has from 1290nm to 1650nm and cable cut-off wavelength (λ cc) A preferably from 1320nm to 1650nm.Described at least one optical-fibre needle to turning round of extending of the part at least along the length LTOT of optical cable around length L with turn round around pitch P around the longitudinal axis (Z) turn round spirally around, wherein, turn round around length and turn round and be selected such that optical cable presents the measurement cut-off wavelength being equal to or less than 1260nm around pitch.Applying for a patent herein is split knitting forming again to superconducting tape, thus improves the performance of whole superconducting tape.

Publication number is " CN103488905A ", name is called in the Chinese patent application of " a kind of computational methods of spiral multilayer hyperconductive cable A.C.power loss ", disclose a kind of computational methods of spiral multilayer hyperconductive cable A.C.power loss, by setting up spiral multilayer high-temperature superconductive cable equivalent-circuit model, realize each layer electric current of conductive layer (comprising conductor layer and screen) cold insulation high-temperature superconductive cable and Distribution of Magnetic Field, then according to hyperconductive cable conductive layer tapping condition, calculate and obtain hyperconductive cable A.C.power loss.Applying for a patent herein is split knitting forming again to superconducting tape, thus improves the performance of whole superconducting tape.

Based on this, be herein to propose a kind of brand-new superconducting tape winding method to optimize its performance.

Summary of the invention

The object of the invention is to the deficiency overcoming the existence of above-mentioned prior art, a kind of high temperature superconductive wire winding method turned round around structure is provided, the method is first by the faciola that second-generation high-temperature superconductor broad ways is divided into several narrower, then according to certain structure, these faciolas is woven into new superconductive tape.Under equal through-flow condition, by changing and optimize braiding structure to reduce the background magnetic field of the superconducting magnet utilizing new superconductive wire-wound, thus the critical current of superconducting coil can be improved, reduce its A.C.power loss.

The present invention is realized by following technical proposal: a kind of high-temperature superconductive cable conductor winding method, and wherein, step is:

Step one, band cut: belt material of high temperature superconduct is cut into along its length thread superconduction faciola;

Step 2, band weave: woven by described superconduction faciola, form new superconducting line.

Preferably, described cutting, refers to physics cutting or laser cutting.

Preferably, described cutting, refers to and band is cut into the thread superconducting tape that width is 0.5mm-5mm.

Preferably, described braiding, comprises concrete steps:

Step 1, the superconduction faciola that two are cut out turn round mutually around, turn round closely under the prerequisite not damaging band as far as possible around;

Step 2, utilize metal material by turn round around after the two ends of band be fixed;

Step 3, two groups have been completed two turn round around band turn round mutually further around, turn round closely under the prerequisite not damaging band as far as possible around, its moment of torsion be not less than two turn round around moment of torsion;

Step 4, utilize metal material step 3 is turned round further around after band two ends be fixed;

Step 5, according to the demand of wire, can further to turn round around after band further turn round around.

Compared with the prior art, the substantive distinguishing features that has of the present invention and marked improvement are:

Based on existing superconducting tape production technology, when not changing superconducting tape production cost and R & D Cost, by cutting superconducting tape and weaving, change macroscopical geometry of superconducting tape, the critical current of magnet is improve in superconducting magnet application, reduce its A.C.power loss, significantly improve the performance of magnet.Under equal conditions, this is equivalent to the cost reducing user.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the flow chart of steps according to high-temperature superconductive cable conductor winding method of the present invention;

Fig. 2 is that the critical current of superconducting tape changes schematic diagram with background magnetic field;

Fig. 3 is the schematic diagram that the A.C.power loss of superconducting tape changes with background magnetic field.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

As shown in Figure 1, in the present embodiment, comprise the steps:

Step one, band cut: belt material of high temperature superconduct is cut into along its length thread superconduction faciola;

Step 2, band weave: woven by described superconduction faciola, form new superconducting line.

In the present embodiment, described cutting, refers to physics cutting or laser cutting.

In the present embodiment, described cutting, refers to and band is cut into the thread superconducting tape that width is 0.5mm-5mm.

In the present embodiment, described braiding, comprises concrete steps:

Step 1, the superconduction faciola that two are cut out turn round mutually around, turn round closely under the prerequisite not damaging band as far as possible around;

Step 2, utilize metal material by turn round around after the two ends of band be fixed;

Step 3, two groups have been completed two turn round around band turn round mutually further around, turn round closely under the prerequisite not damaging band as far as possible around, its moment of torsion be not less than two turn round around moment of torsion;

Step 4, utilize metal material step 3 is turned round further around after band two ends be fixed;

Step 5, according to the demand of wire, can further to turn round around after band further turn round around.

As shown in Figure 2,3, be the schematic diagram that the critical current of superconducting tape changes with background magnetic field with background magnetic field change schematic diagram and the A.C.power loss of superconducting tape respectively.

This technology is by cutting and weave macroscopical geometry of changing superconducting tape, thus significantly improves the performance of band, and specific embodiment is as follows:

Embodiment 1: the coiling that can be applicable to cake formula superconducting coil.Compare with traditional approach with the cake formula superconducting coil critical current turned round around the new type high temperature superconducting line coiling of structure, the critical current of 20% can be improved and reduce by the A.C.power loss of 40%.

Embodiment 2: the coiling that can be applicable to helix tube superconducting coil.The critical current of the helix tube superconducting coil of coiling can improve 30%, reduces the A.C.power loss of 50%.

Embodiment 3: can be applicable to big current superconductive current lead and cable.Equipment critical current 20% can be improved, reduce A.C.power loss 30%.

More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.

Claims (4)

1. high-temperature superconductor turns round the preparation method around wire, it is characterized in that, step is:

Step one, band cut: belt material of high temperature superconduct is cut into along its length thread superconduction faciola;

Step 2, band weave: woven by described superconduction faciola, form new superconducting line.

2. high-temperature superconductor according to claim 1 turns round the preparation method around wire, it is characterized in that, described cutting, refers to physics cutting or laser cutting.

3. the preparation method around wire is turned round in new type high temperature superconduction according to claim 1, it is characterized in that, described cutting, refers to and band is cut into the thread superconducting tape that width is 0.5mm-5mm.

4. high-temperature superconductor according to claim 1 turns round the preparation method around wire, it is characterized in that, described braiding, comprises concrete steps:

Step 1, the superconduction faciola that two are cut out turn round mutually around, turn round closely under the prerequisite not damaging band as far as possible around;

Step 2, utilize metal material by turn round around after the two ends of band be fixed;

Step 3, two groups have been completed two turn round around band turn round mutually further around, turn round closely under the prerequisite not damaging band as far as possible around, its moment of torsion be not less than two turn round around moment of torsion;

Step 4, utilize metal material step 3 is turned round further around after band two ends be fixed;

Step 5, according to the demand of wire, can further to turn round around after band further turn round around.