KR20160077635A - Spiral bending test apparatus for superconducting wire - Google Patents

Spiral bending test apparatus for superconducting wire Download PDF

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KR20160077635A
KR20160077635A KR1020140187773A KR20140187773A KR20160077635A KR 20160077635 A KR20160077635 A KR 20160077635A KR 1020140187773 A KR1020140187773 A KR 1020140187773A KR 20140187773 A KR20140187773 A KR 20140187773A KR 20160077635 A KR20160077635 A KR 20160077635A
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superconducting wire
spiral
deformation
guide roller
roller
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KR1020140187773A
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Korean (ko)
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하홍수
심기덕
오상수
조전욱
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한국전기연구원
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N60/00—Superconducting devices

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  • Superconductors And Manufacturing Methods Therefor (AREA)

Abstract

According to the present invention, a spiral bending property test apparatus for a superconducting wire is continuously transported in a liquefied nitrogen atmosphere in a reel-to-reel manner by an unwinding reel and a winding reel, measures a critical current by a current supply unit to supply a current to a superconducting wire and a voltage measurement unit to measure a voltage of the superconducting wire, and comprises: a main body; a pair of guide rollers which are supported on the main body and guide the superconducting wire to transport the superconducting wire in a spiral shape; a spiral bending member which is formed in a cylindrical shape to wind the superconducting wire transported along the guide rollers in a spiral shape, and rotates along a rotary shaft by transporting the superconducting wire; and a pair of support members arranged on both ends of the spiral bending member to rotate and support the spiral bending member. Accordingly, the superconducting wire is continuously and spirally bent to measure the critical current by spirally bending the superconducting wire. Also, the gap between the guide rollers and the diameter of the spiral bending member are adjusted to measure the critical current of the superconducting wire in various spiral bending conditions.

Description

초전도선재의 나선변형 특성 평가장치 {Spiral bending test apparatus for superconducting wire}TECHNICAL FIELD [0001] The present invention relates to a spiral bending test apparatus for superconducting wire,

본 발명은 초전도선재의 나선변형 특성 평가장치에 관한 것으로, 더욱 상세하게는 초전도선재에 연속적으로 나선변형을 인가하며 초전도선재의 임계전류를 측정할 수 있는 초전도선재의 나선변형 특성 평가장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for evaluating spiral deformation characteristics of a superconducting wire, more particularly, to an apparatus for evaluating a spiral deformation characteristic of a superconducting wire capable of measuring a critical current of the superconducting wire by continuously applying spiral deformation to the superconducting wire .

초전도선재는 물체의 전기저항이 0인 물질을 의미하며, 액체헬륨의 온도인 4K 근처에서 전류저항이 0에 가까운 물질을 저온초전도선재(Low temperature superconductor, LTS), 액체 헬륨보다 고온의 액체질소 온도인 77K에서 초전도 현상을 보이는 물질을 고온초전도선재(High temperature superconductor, HTS)라 일컫는다.A superconducting wire means a material whose electrical resistance is zero. A material having a current resistance near 0 at a temperature of about 4 K, which is a liquid helium temperature, is called a low temperature superconductor (LTS), a liquid nitrogen temperature A superconducting material at 77K is called a high temperature superconductor (HTS).

초전도선재는 높은 임계온도, 임계전류밀도 및 임계자기장을 나타내기 때문에 초전도 마그넷, 초전도 케이블, 초전도 모터 또는 초전도 발전기 등과 같은 전력용 기기에 적용이 기대되고 있다. 이와 같이 초전도선재가 산업화되는 시점에 있어서 빠른 제조속도와 병행하여 초전도선재 품질을 결정하는 빠르면서 정확한 측정방법이 요구되고 있으며, 특히 초전도선재에 손상을 주지 않고 빠르고 정확하게 품질을 측정할 수 있는 방법이 필요한 실정이다.Since superconducting wires exhibit a high critical temperature, a critical current density and a critical magnetic field, they are expected to be applied to power devices such as superconducting magnets, superconducting cables, superconducting motors or superconducting generators. At the time when superconducting wire is industrialized, there is a need for a fast and precise measurement method that determines the quality of superconducting wire in parallel with a rapid manufacturing speed. In particular, a method for quickly and accurately measuring quality without damaging the superconducting wire It is necessary.

초전도선재를 예를 들어 초전도케이블에 적용 시 여러 가지 형태의 하중이나 응력이 작용하여 초전도선재의 변형을 일으키게 된다. 그 예로, 와인딩부에서 인장변형, 냉각시 열수축률 차에 따른 압축변형, 초전도선재의 와인딩(Winding) 과정에서 발생하는 굽힘변형 및 비틀림변형 등이 있다. 따라서, 초전도케이블의 설계를 위해서는 초전도선재의 기계적 특성평가와 더불어 강화방안의 강구 또한 필요하다.When a superconducting wire is applied to, for example, a superconducting cable, various types of loads or stresses are applied to cause deformation of the superconducting wire. Examples include tensile deformation in the winding part, compressive deformation in accordance with the difference in heat shrinkage rate during cooling, bending deformation and twisting deformation in the winding process of the superconducting wire. Therefore, in order to design the superconducting cable, it is necessary to evaluate the mechanical properties of the superconducting wire and to provide a reinforcement plan.

이와 같이 인장변형, 압축변형 및 굽힘변형에 따른 특성 평가장치는 종래기술 '대한민국특허청 등록특허 제10-1215560호 변형 및 응력 인가 초전도 선재의 임계전류 측정장치' 및 '대한민국특허청 등록특허 제10-0805284호 고온초전도 선재의 굽힘변형에 따른 임계전류 측정용 홀더 및 그 홀더가 장착된 가속시험장치'와 같이 인장변형률, 압축변형률 및 굽힘변형률을 달리하여 초전도선재의 특성을 확인할 수 있다.The apparatus for evaluating characteristics according to tensile deformation, compression deformation and bending deformation according to the prior art is disclosed in Korean Patent Registration No. 10-1215560, Korean Patent No. 10-1215560, and apparatus for measuring critical current of a stressed superconducting wire, and Korean Patent No. 10-0805284 The characteristics of the superconducting wire can be confirmed by varying the tensile strain, the compressive strain and the bending strain, such as a holder for measuring a critical current according to bending deformation of a high-temperature superconducting wire, and an acceleration test apparatus equipped with the holder.

하지만 이와 같은 종래의 방식은 초전도선재의 두께방향 변형에 대해서만 특성을 측정 가능하며, 나선 형상에 의한 비틀림변형을 초전도선재에 가하면서 임계전류를 측정하는 장치에 대해서는 상세히 언급되지 않았다. 따라서 초전도선재에 연속적으로 나선변형을 가하면서 초전도선재의 임계전류 등과 같은 특성을 평가하는 장치가 필요하다.However, such a conventional method can measure the characteristics of the superconducting wire only in the thickness direction deformation, and the apparatus for measuring the critical current while applying the torsional deformation to the superconducting wire is not described in detail. Therefore, there is a need for a device for evaluating characteristics such as critical current of a superconducting wire while continuously applying spiral deformation to the superconducting wire.

대한민국특허청 등록특허 제10-1215560호Korean Intellectual Property Office Registration No. 10-1215560 대한민국특허청 등록특허 제10-0805284호Korea Patent Office Registration No. 10-0805284

따라서 본 발명의 목적은 초전도선재에 연속적으로 나선변형을 가하여 초전도선재의 임계전류 측정이 가능한 초전도선재의 나선변형 특성 평가장치를 제공하는 것이다.SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an apparatus for evaluating spiral deformation characteristics of a superconducting wire capable of measuring critical current of a superconducting wire by continuously applying spiral deformation to the superconducting wire.

또한, 한 쌍의 가이드롤러 간의 간격과 나선변형부재의 직경을 조절하여 다양한 나선변형 조건에서 초전도선재의 임계전류 측정이 가능한 초전도선재의 나선변형 특성 평가장치를 제공하는 것이다.Another object of the present invention is to provide an apparatus for evaluating the spiral deformation characteristics of a superconducting wire capable of measuring the critical current of the superconducting wire under various spiral deformation conditions by adjusting the distance between the pair of guide rollers and the diameter of the spiral deformation member.

상기한 목적은, 액체질소 분위기 하에서 풀림릴 및 감김릴에 의해 릴투릴 방식으로 연속으로 이송되며, 초전도선재로 전류를 공급하는 전류공급부 및 상기 초전도선재의 전압을 측정하는 전압측정부를 통해 임계전류를 측정하는 초전도선재의 나선변형 특성 평가장치에 있어서, 본체와; 상기 본체에 지지되며 상기 초전도선재가 나선형으로 이송되도록 상기 초전도선재를 가이드하는 한 쌍의 가이드롤러와; 상기 가이드롤러를 따라 이송되는 상기 초전도선재가 나선형으로 감기도록 원통형상으로 형성되며 상기 초전도선재가 이송됨에 따라 회전축을 따라 회전하는 나선변형부재와; 상기 나선변형부재의 양단에 배치되어 상기 나선변형부재를 회전지지하는 한 쌍의 지지부재를 포함하는 것을 특징으로 하는 초전도선재의 나선변형 특성 평가장치에 의해 달성된다.The above object is achieved by a method of manufacturing a superconducting tape, which is continuously fed in a reel-to-reel system by means of a reel reel and winder under a liquid nitrogen atmosphere and has a current supply part for supplying current to the superconducting wire and a voltage measuring part for measuring a voltage of the superconducting wire, An apparatus for evaluating a spiral deformation characteristic of a superconducting wire to be measured, comprising: a body; A pair of guide rollers supported on the main body and guiding the superconducting wire so that the superconducting wire is spirally fed; A spiral deforming member formed in a cylindrical shape so that the superconducting wire to be fed along the guide roller is spirally wound and rotating along a rotation axis as the superconducting wire is fed; And a pair of support members disposed at both ends of the helical deformation member and rotatably supporting the helical deformation member.

여기서, 한 쌍의 상기 가이드롤러는 이격 배치되며, 상기 초전도선재의 나선변형 피치(Pitch)를 조절가능하도록 한 쌍의 상기 가이드롤러가 이격되는 간격을 조절하는 롤러간격조절부를 더 포함하는 것을 특징으로 하며, 상기 초전도선재가 상기 가이드롤러로부터 이탈되지 않도록 상기 가이드롤러에는 외주면을 따라 가이드홈이 형성된 것이 바람직하다.Here, the pair of guide rollers may be spaced apart from each other, and may further include a roller gap adjusting unit for adjusting a spacing between the pair of guide rollers so as to adjust a spiral deformation pitch of the superconducting strip. And a guide groove is formed along the outer circumferential surface of the guide roller so that the superconducting wire is not separated from the guide roller.

또한, 상기 지지부재에는 상이한 직경을 가진 상기 나선변형부재를 교체가능하도록 나선변형결합부가 형성되는 것이 바람직하며, 상기 가이드롤러 및 상기 나선변형부재의 회전속도가 동일하도록 제어하는 제어부를 더 포함하는 것이 바람직하다.Preferably, the support member is formed with a spiral-deformed coupling portion so that the spiral-deformable member having a different diameter can be replaced, and the control unit controls the rotation speed of the guide roller and the spiral- desirable.

상술한 본 발명의 구성에 따르면 초전도선재에 연속적으로 나선변형을 가하여 초전도선재의 나선변형에 따른 임계전류 측정이 가능한 효과를 얻을 수 있다.According to the above-described structure of the present invention, a spiral deformation is continuously applied to the superconducting wire to obtain an effect that the critical current can be measured according to the spiral deformation of the superconducting wire.

또한, 한 쌍의 가이드롤러 간의 간격과 나선변형부재의 직경을 조절하여 다양한 나선변형 조건에서 초전도선재의 임계전류 측정이 가능한 효과를 얻을 수 있다.Further, by adjusting the distance between the pair of guide rollers and the diameter of the helical deformation member, it is possible to obtain an effect that the critical current of the superconducting wire can be measured under various helical deformation conditions.

도 1은 본 발명의 실시예에 따른 초전도선재의 나선변형 특성 평가장치의 정면도이고,
도 2 및 도 3은 나선변형유니트의 정면도 및 사시도이다.1 is a front view of an apparatus for evaluating spiral deformation characteristics of a superconducting wire according to an embodiment of the present invention,
2 and 3 are a front view and a perspective view of the spiral deformation unit.

이하 도면을 참조하여 본 발명에 따른 초전도선재의 나선변형 특성 평가장치를 상세히 설명한다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An apparatus for evaluating spiral deformation characteristics of a superconducting wire according to the present invention will be described in detail with reference to the drawings.

도 1에 도시된 바와 같이 초전도선재(1)의 임계전류를 측정하기 위한 특성 평가장치는 하우징(100)과, 하우징(100) 내에 배치된 풀림릴(200) 및 감김릴(300)과, 초전도선재의 전류를 공급하는 전류공급부와, 초전도선재의 인장력을 측정하는 로드셀(400)과, 초전도선재의 전압을 측정하는 전압측정부(500)와, 초전도선재(1)의 나선변형 특성을 확인하는 나선변형유니트(600)로 이루어진다.1, a characteristic evaluation apparatus for measuring a critical current of a superconducting wire 1 includes a housing 100, a reel reel 200 and a reel 300 disposed in the housing 100, A voltage measuring unit 500 for measuring the voltage of the superconducting wire, a voltage measuring unit 500 for measuring the voltage of the superconducting wire 500, And a spiral deformation unit 600.

초전도선재(1)를 초전도상태로 만들기 위해서는 액체질소가 하우징(100)에 채워져야 하는데, 이를 위해 하우징(100)의 하부에는 액체질소저장부(700)가 배치된다. 따라서 하우징(100)에 초전도선재(1)를 설치한 후 하우징(100)을 액체질소저장부(700) 방향으로 하강시키면 초전도선재(1)가 저항이 0인 초전도상태가 되고, 이 상태에서 나선변형에 따른 임계전류 값을 측정한다. 이와 같이 전압측정부(500)를 통해 확인된 초전도선재(1)의 임계전류 값은 디스플레이부(800)에 의해 사용자가 수치로 확인 가능하다.In order to make the superconducting wire 1 in a superconducting state, liquid nitrogen must be filled in the housing 100. To this end, a liquid nitrogen storage unit 700 is disposed below the housing 100. [ Therefore, if the superconducting wire 1 is installed in the housing 100 and then the housing 100 is lowered toward the liquid nitrogen storage part 700, the superconducting wire 1 becomes a superconducting state in which the resistance is zero. In this state, The critical current value according to the strain is measured. The threshold current value of the superconducting wire 1 confirmed through the voltage measuring unit 500 can be numerically confirmed by the user using the display unit 800.

하우징(100)에는 초전도선재(1)를 한쪽에서는 풀고 다른 한쪽에서는 감는 풀림릴(200) 및 감김릴(300)이 배치된다. 한 쌍의 풀림릴(200) 및 감김릴(300)에 의해 초전도선재(1)는 릴투릴 방식으로 연속적으로 이송되며, 이를 통해 연속적으로 초전도선재(1)의 나선변형 특성을 평가할 수 있다. 이와 같이 연속적으로 초전도선재(1)를 이송시킬 경우 초전도선재(1)에 손상을 주지 않고 빠르고 정확하게 임계전류 값을 측정 가능하다. 초전도선재는 로드셀(Load cell, 400)에 의해 초전도선재에 인가되는 인장력(Tension)을 측정할 수 있으며, 로드셀을 지난 초전도선재는 로터리엔코더(Rotary encoder, 900)에 의해 이동속도 및 길이가 측정된다.The housing 100 is provided with a reel reel 200 and a winding reel 300 wound on the other side of the superconducting wire 1 from one side. The superconducting wire 1 is continuously fed by a pair of the unwinding reel 200 and the winding wire 300 in a reel-toothed manner so that the spiral deformation characteristics of the superconducting wire 1 can be continuously evaluated. When the superconducting wire 1 is continuously transferred in this manner, it is possible to measure the critical current value quickly and accurately without damaging the superconducting wire 1. The superconducting wire can measure the tension applied to the superconducting wire by the load cell 400. The speed and length of the superconducting wire passing through the load cell are measured by a rotary encoder 900 .

초전도선재(1)는 외부의 전류공급부에 의해 전기를 인가받아 전류가 흐르게 되고, 초전도선재(1)에 흐르는 전류는 외부전압단자(510) 및 내부전압단자(530)로 이루어진 전압측정부(500)에 의해 임계전류를 확인하게 된다. 외부전압단자(510)는 전류를 인가하는 단자의 바깥쪽에 있으며 초전도선재의 손상에 의한 초전도특성 저저하(Quenching) 및 초전도선재 소손을 방지하기 위한 것이다. 전압측정부(500) 중 내부전압단자(530)는 4단자법(4-Probe method)에 의해 초전도선재(1)의 임계전류가 측정된다. 초전도선재(1) 임의의 구간 양단에 각각 (+) 및 (-) 전류단자가 형성되고, 그 사이에 (+) 및 (-) 내부전압단자(530)가 형성되어, 초전도선재(1)에 인가된 전류에 따른 전압을 측정하게 된다. 초전도선재(1)의 경우 액체질소 하에서 저항이 0이기 때문에 V=IR 공식에 의해 전압이 0이 된다. 따라서 초전도선재(1)에 나선변형을 발생시키고 전압측정부(500)에서 전압을 측정시 전압이 발생하게 되면 이는 저항이 발생한 것을 의미하며, 최종적으로 나선변형에 의해 임계전류가 감소한다는 것을 의미한다.The current flowing in the superconducting wire 1 is supplied to the voltage measuring unit 500 including the external voltage terminal 510 and the internal voltage terminal 530. [ ) To confirm the threshold current. The external voltage terminal 510 is located outside the terminal to which the current is applied and is intended to prevent the superconducting characteristic from being lowered due to damage of the superconducting wire and the superconducting wire material being burned out. The critical current of the superconducting wire 1 is measured by the 4-probe method of the internal voltage terminal 530 of the voltage measuring unit 500. (+) And (-) current terminals are formed on both ends of an arbitrary section of the superconducting wire 1, and positive and negative internal voltage terminals 530 are formed therebetween, And the voltage corresponding to the applied current is measured. In the case of the superconducting wire 1, since the resistance is zero under liquid nitrogen, the voltage becomes 0 due to V = IR formula. Therefore, when a voltage is generated when a spiral strain is generated in the superconducting wire 1 and a voltage is measured by the voltage measuring unit 500, this means that a resistance is generated, which means that the critical current is finally reduced by the spiral deformation .

하우징(100)에 배치되며 초전도선재(1)를 나선변형하여 그에 따른 특성을 평가하기 위한 나선변형유니트(600)는 본체(610)와, 가이드롤러(630)와, 나선변형부재(650)와, 지지부재(670)를 포함한다.The spiral deformation unit 600 disposed in the housing 100 for spirally deforming the superconducting wire 1 and evaluating the characteristics thereof includes a main body 610, a guide roller 630, a spiral deformable member 650, , And a support member (670).

가이드롤러(630)는 본체(610)에 지지되며 초전도선재(1)가 나선형으로 배치되도록 초전도선재(1)를 가이드하는 역할을 하며, 감김 및 풀림이 가능하도록 한 쌍으로 이루어진다. 가이드롤러(630)는 본체(610)에 지지되도록 가이드롤러(630)로부터 본체(610) 방향으로 돌출된 롤러지지부(631)를 포함한다. The guide roller 630 is supported by the main body 610 and serves to guide the superconducting wire 1 so that the superconducting wire 1 is arranged in a spiral shape and is formed as a pair so that it can be wound and unwound. The guide roller 630 includes a roller support 631 protruding from the guide roller 630 toward the main body 610 so as to be supported by the main body 610.

또한, 가이드롤러(630)가 초전도선재(1)를 가이드하기 위해서는 회전구동을 하여야 하는데, 가이드롤러(630)가 회전구동 가능하도록 가이드롤러(630)와 롤러지지부(631) 사이에는 베어링(633)이 설치된다. 여기서, 베어링(633)은 볼베어링(Ball bearing), 롤러베어링(Roller bearing) 및 니들베어링(Needle bearing) 중 어느 하나인 것이 바람직하다.The guide roller 630 is rotatably driven to guide the superconducting wire 1 and a bearing 633 is interposed between the guide roller 630 and the roller supporter 631 so that the guide roller 630 can rotate. Respectively. Here, the bearing 633 is preferably any one of a ball bearing, a roller bearing, and a needle bearing.

한 쌍의 가이드롤러(630)에는 외주면을 따라 가이드홈(635)이 형성된다. 가이드홈(635)은 초전도선재(1)의 넓이와 같거나 크게 형성되어 초전도선재(1)가 가이드롤러(630)를 따라 가이드되는 과정에서 초전도선재(1)가 느슨해져 가이드롤러(630)로부터 이탈되는 것을 방지한다. 가이드홈(635)의 깊이는 초전도선재(1)의 두께보다 깊도록 형성되는 것이 바람직하다.A guide groove 635 is formed in the pair of guide rollers 630 along the outer peripheral surface. The guide groove 635 is formed to be equal to or larger than the width of the superconducting wire 1 so that the superconducting wire 1 is loosened in the process of guiding the superconducting wire 1 along the guide roller 630, . It is preferable that the depth of the guide groove 635 is formed to be deeper than the thickness of the superconducting wire 1.

가이드롤러(630)를 따라 이송되는 초전도선재(1)가 나선형으로 감기도록 가이드롤러(630)의 상부영역에는 나선변형부재(650)가 배치된다. 나선변형부재(650)는 가이드롤러(630)의 상부영역 뿐만 아니라 하부영역 또는 한 쌍의 가이드롤러(630) 사이에 배치되는 등 가이드롤러(630)와 근접한 영역이면 어디든 배치 가능하다. 이러한 나선변형부재(650)는 본체(610)로부터 돌출된 한 쌍의 지지부재(670)에 의해 본체에 배치되는데, 지지부재(670)는 나선변형부재(650)의 양단에 배치되어 나선변형부재(650)를 회전가능하도록 지지한다.The spiral deformable member 650 is disposed in the upper region of the guide roller 630 so that the superconducting wire 1 to be fed along the guide roller 630 is wound spirally. The helical deformable member 650 can be disposed at any position in the vicinity of the guide roller 630, which is disposed between the lower region or the pair of guide rollers 630 as well as the upper region of the guide roller 630. The spiral deformation member 650 is disposed on the body by a pair of support members 670 protruding from the body 610. The support member 670 is disposed at both ends of the spiral deformation member 650, (650) so as to be rotatable.

나선변형부재(650)는 가이드롤러(630)가 나선으로 감기도록 원통형상으로 형성되며 초전도선재(1)가 이송됨에 따라 회전축을 따라 회전구동한다. 나선변형부재(650)가 회전하지 않을 경우 초전도선재(1)가 나선변형부재(650)를 따라 연속으로 이송되면서 나선변형부재(650)와 마찰이 발생하게 되고, 이러한 마찰에 의해 열이 발생하거나 초전도선재(1)가 손상되는 문제가 발생하게 된다. 따라서 나선변형부재(650)는 초전도선재(1)의 이송에 맞춰 회전되는 것이 바람직하다.The helical deformable member 650 is formed into a cylindrical shape so that the guide roller 630 is wound with a spiral and is driven to rotate along the rotation axis as the superconducting wire 1 is fed. When the helical deformable member 650 does not rotate, friction occurs with the helical deformable member 650 while the superconducting wire 1 is continuously fed along the helical deformable member 650, and heat is generated by such friction There is a problem that the superconducting wire 1 is damaged. Therefore, the helical deformable member 650 is preferably rotated in accordance with the feeding of the superconducting wire 1.

초전도선재(1)와 나선변형부재(650)의 마찰을 최소화하기 위해 가이드롤러(630)의 회전속도와 나선변형부재(650)의 회전속도가 동일하게 하는 것이 바람직하며, 이와 같이 회전속도를 제어하기 위해 제어부(690)를 더 포함할 수 있다.It is preferable that the rotation speed of the guide roller 630 and the rotation speed of the spiral deformation member 650 are made equal to each other so as to minimize the friction between the superconducting wire 1 and the spiral deformation member 650, And may further include a control unit 690.

나선변형부재(650)로 초전도선재(1)가 이송되도록 가이드하는 한 쌍의 가이드롤러(630)는 서로 이격 배치되며, 초전도선재(1)의 나선변형 피치(Pitch)를 조절가능하도록 가이드롤러(30)의 간격을 조절하는 롤러간격조절부(637)가 본체(610)에 형성된다. 롤러간격조절부(637)는 가이드롤러(630)를 지지하는 롤러지지부(631)의 위치를 변동시켜 가이드롤러(630)의 간격을 조절한다. 한 쌍의 가이드롤러(630) 간의 간격이 좁아지면 초전도선재(1)의 피치가 좁아지고, 가이드롤러(630) 간의 간격이 넓어지면 초전도선재(1)의 피치 또한 넓어진다. 이를 통해 다양한 피치의 나선변형에 따른 초전도선재(1)의 임계전류를 확인할 수 있다.A pair of guide rollers 630 for guiding the superconducting wire 1 to be fed to the spiral deformation member 650 are spaced from each other and are arranged on the guide rollers 630 to adjust the spiral deformation pitch of the superconducting wire 1 30 are formed on the main body 610. The roller gap adjusting portion 637 is formed on the main body 610 to adjust the gap between the main body 610 and the main body 610. [ The roller gap adjusting unit 637 adjusts the distance between the guide rollers 630 by changing the position of the roller support 631 supporting the guide roller 630. When the interval between the pair of guide rollers 630 is narrowed, the pitch of the superconducting wire 1 becomes narrower. When the interval between the guide rollers 630 becomes wider, the pitch of the superconducting wire 1 also widens. Thus, it is possible to confirm the critical current of the superconducting wire 1 according to the spiral deformation of various pitches.

초전도선재(1)의 나선변형시 나선변형되는 직경에 따라 임계전류 값을 확인하기 위해 나선변형부재(650)는 다양한 직경을 가진 것을 교체가능해야 한다. 이를 위해 지지부재(670)에는 상이한 직경을 가진 나선변형부재(650)를 교체 가능하도록 나선변형결합부(671)가 형성된다. 따라서 나선변형결합부(671)에서 나선변형부재(650)를 이탈 또는 장착시켜 초전도선재(1)의 임계전류 측정 조건을 변경 가능하다.In order to check the critical current value according to the diameter of the spirally deformed spiral of the superconducting wire 1, the spiral member 650 should be replaceable with various diameters. For this purpose, a spiral-deformed engaging portion 671 is formed in the support member 670 so that the spiral-deformable member 650 having a different diameter can be replaced. Therefore, the spiral deformation member 650 can be detached or mounted in the spiral deformation engaging portion 671 to change the critical current measurement condition of the superconducting wire 1.

나선변형결합부(671)에는 나선변형부재(650)가 회전구동되도록 베어링(673)이 설치되는데, 베어링(673)은 볼베어링(Ball bearing), 롤러베어링(Roller bearing) 및 니들베어링(Needle bearing) 중 어느 하나인 것이 바람직하다.A bearing 673 is provided on the helical deformation engaging portion 671 so that the helical deformable member 650 is driven to rotate. The bearing 673 is a ball bearing, a roller bearing, and a needle bearing, Is preferable.

이와 같은 본 발명의 초전도선재(1)의 나선변형 특성 평가장치는 초전도선재(1)에 연속적으로 나선변형을 가하여 초전도선재(1)의 나선변형에 따른 임계전류를 측정가능할 뿐만 아니라, 한 쌍의 가이드롤러(630) 간의 간격을 조절하여 초전도선재(1)의 피치를 조절하여 임계전류를 측정가능하며, 나선변형부재(650)의 직경을 조절하여 다양한 나선변형 조건에서 초전도선재(1)의 임계전류를 측정가능하다.The apparatus for evaluating the spiral deformation characteristics of the superconducting wire 1 according to the present invention can not only measure the critical current according to the spiral deformation of the superconducting wire 1 by applying spiral deformation continuously to the superconducting wire 1, The pitch of the superconducting wire 1 can be adjusted by adjusting the distance between the guide rollers 630 to measure the critical current and the diameter of the spiral deformation member 650 can be adjusted to control the criticality of the superconducting wire 1 The current can be measured.

100: 하우징 200: 풀림릴
300: 감김릴 400: 로드셀
500: 전압측정부 510: 외부전압단자
530: 내부전압단자 600: 나선변형유니트
610: 본체 630: 가이드롤러
631: 롤러지지부 633, 673: 베어링
635: 가이드홈 637: 롤러간격조절부
650: 나선변형부재 670: 지지부재
671: 나선변형결합부 690: 제어부
700: 액체질소저장부 800: 디스플레이부
900: 로터리엔코더100: housing 200:
300: Gangil 400: Load cell
500: voltage measuring unit 510: external voltage terminal
530: Internal voltage terminal 600: Spiral strain unit
610: Main body 630: Guide roller
631: roller supporting portions 633, 673: bearing
635: guide groove 637: roller interval adjusting portion
650: helical deformation member 670: support member
671: helical deformation joining portion 690:
700: liquid nitrogen storage part 800: display part
900: Rotary encoder

Claims (10)

액체질소 분위기 하에서 풀림릴 및 감김릴에 의해 릴투릴 방식으로 연속으로 이송되며, 초전도선재로 전류를 공급하는 전류공급부 및 상기 초전도선재의 전압을 측정하는 전압측정부를 통해 임계전류를 측정하는 초전도선재의 나선변형 특성 평가장치에 있어서,
본체와;
상기 본체에 지지되며 상기 초전도선재가 나선형으로 이송되도록 상기 초전도선재를 가이드하는 한 쌍의 가이드롤러와;
상기 가이드롤러를 따라 이송되는 상기 초전도선재가 나선형으로 감기도록 원통형상으로 형성되며 상기 초전도선재가 이송됨에 따라 회전축을 따라 회전하는 나선변형부재와;
상기 나선변형부재의 양단에 배치되어 상기 나선변형부재를 회전지지하는 한 쌍의 지지부재를 포함하는 것을 특징으로 하는 초전도선재의 나선변형 특성 평가장치.A superconducting wire rod which is fed continuously in a reel-to-reel system by a pulling reel and a decoupling wire under a liquid nitrogen atmosphere, and which supplies a current to the superconducting wire, and a superconducting wire rod for measuring a critical current through a voltage measuring unit for measuring a voltage of the superconducting wire A spiral deformation property evaluating apparatus comprising:
A body;
A pair of guide rollers supported on the main body and guiding the superconducting wire so that the superconducting wire is spirally fed;
A spiral deforming member formed in a cylindrical shape so that the superconducting wire to be fed along the guide roller is spirally wound and rotating along a rotation axis as the superconducting wire is fed;
And a pair of support members disposed at both ends of the helical deformation member and rotatably supporting the helical deformation member. 제 1항에 있어서,
한 쌍의 상기 가이드롤러는 이격 배치되며,
상기 초전도선재의 나선변형 피치(Pitch)를 조절가능하도록 한 쌍의 상기 가이드롤러가 이격되는 간격을 조절하는 롤러간격조절부를 더 포함하는 것을 특징으로 하는 초전도선재의 나선변형 특성 평가장치.The method according to claim 1,
The pair of guide rollers are spaced apart from each other,
Further comprising a roller gap adjusting unit for adjusting a spacing between the pair of guide rollers so that a spiral deformation pitch of the superconducting wire can be adjusted. 제 1항에 있어서,
상기 초전도선재가 상기 가이드롤러로부터 이탈되지 않도록 상기 가이드롤러에는 외주면을 따라 가이드홈이 형성된 것을 특징으로 하는 초전도선재의 나선변형 특성 평가장치.The method according to claim 1,
Wherein the guide roller is formed with a guide groove along an outer circumferential surface thereof so that the superconducting wire is not separated from the guide roller. 제 1항에 있어서,
상기 가이드롤러가 상기 본체에 지지되도록 상기 가이드롤러로부터 상기 본체 방향으로 돌출된 롤러지지부를 더 포함하는 것을 특징으로 하는 초전도선재의 나선변형 특성 평가장치.The method according to claim 1,
Further comprising a roller support portion protruding from the guide roller toward the main body so that the guide roller is supported by the main body. 제 4항에 있어서,
상기 가이드롤러가 회전구동 가능하도록 상기 가이드롤러 및 상기 롤러지지부 사이에 베어링이 설치되는 것을 특징으로 하는 초전도선재의 나선변형 특성 평가장치.5. The method of claim 4,
Wherein a bearing is provided between the guide roller and the roller support so that the guide roller can be driven to rotate. 제 1항에 있어서,
상기 지지부재에는 상이한 직경을 가진 상기 나선변형부재를 교체가능하도록 나선변형결합부가 형성된 것을 특징으로 하는 초전도선재의 나선변형 특성 평가장치.The method according to claim 1,
Wherein the support member is formed with a spiral-deformed coupling portion so that the spiral-deformable member having a different diameter can be replaced. 제 6항에 있어서,
상기 나선병형부재가 회전구동 가능하도록 상기 나선변형부재 및 상기 나선변형결합부 사이에 베어링이 설치된 것을 특징으로 하는 초전도선재의 나선변형 특성 평가장치.The method according to claim 6,
And a bearing is provided between the spiral deformation member and the spiral deformation engagement unit so that the spiral bottle member can be driven to rotate. 제 5항 및 7항 중 적어도 어느 한 항에 있어서,
상기 베어링은 볼베어링(Ball bearing), 롤러베어링(Roller bearing) 및 니들베어링(Needle bearing) 중 어느 하나인 것을 특징으로 하는 초전도선재의 나선변형 특성 평가장치.The method as claimed in claim 5 or 7,
Wherein the bearing is one of a ball bearing, a roller bearing, and a needle bearing. 제 1항에 있어서,
상기 가이드롤러 및 상기 나선변형부재의 회전속도가 동일하도록 제어하는 제어부를 더 포함하는 것을 특징으로 하는 초전도선재의 나선변형 특성 평가장치.The method according to claim 1,
Further comprising a control unit for controlling the rotation speed of the guide roller and the spiral deformation member to be equal to each other. 제 1항에 있어서,
상기 전압측정부를 통해 확인된 임계전류 값을 수치로 확인가능한 디스플레이부를 더 포함하는 것을 특징으로 하는 초전도선재 나선변형 특성 평가장치.
The method according to claim 1,
And a display unit capable of numerically confirming the critical current value confirmed through the voltage measuring unit.
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Publication number Priority date Publication date Assignee Title
WO2018235992A1 (en) * 2017-06-20 2018-12-27 한국전기연구원 Apparatus for measuring critical current under bending deformation of high-temperature superconducting wire
CN114199943A (en) * 2021-12-09 2022-03-18 上海超导科技股份有限公司 Device and method suitable for testing mechanical property of high-temperature superconducting strip
CN114252348A (en) * 2021-12-28 2022-03-29 东部超导科技（苏州）有限公司 Repeated bending fatigue resistance experiment method for superconducting strip

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WO2018235992A1 (en) * 2017-06-20 2018-12-27 한국전기연구원 Apparatus for measuring critical current under bending deformation of high-temperature superconducting wire
CN114199943A (en) * 2021-12-09 2022-03-18 上海超导科技股份有限公司 Device and method suitable for testing mechanical property of high-temperature superconducting strip
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