• Title/Summary/Keyword: Wire-Winding

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Theoretical Study on Hoop Wrap of the Metal Wire for Type 2 High Pressure Tank (Type 2 고압용기를 위한 금속선재의 Hoop Wrap에 관한 이론 연구)

  • KIM, SEUNGHWAN;HAN, JINMOOK;JUNG, YOUNGGUAN
    • Transactions of the Korean hydrogen and new energy society
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    • v.31 no.2
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    • pp.194-201
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    • 2020
  • Recently, Type 2 high-pressure hydrogen storage tank is studied due to fast defect detection, easy manufacturing, and cost efficiency. Moreover, the dry winding a high-strength metal wire will make increased economic efficiency compare with the wet winding method and the carbon/glass fiber winding method. In this study, a theoretical study on the dry winding of a Type 2 high pressure hydrogen tank using a metal wire was done, and the equations of the total stress on the aligned and the staggered winding for the hoop winding were derived, and the following results were obtained by using these equations. As the diameter of the metal wire, the number of winding layers, and the outer diameter of the liner increase, the maximum stress decreases, but the difference between the maximum stress occurring in the aligned winding and the staggered winding increases. As the pressure increases, the thickness of the winding layer increases, but as the strength of the metal wire increases, the thickness of the winding layer decreases. In addition, regardless of the strength of the metal wire, the thickness of the winding layer of the staggered winding was about 13.4% thinner than that of the aligned winding.

A Study on the Metal Wire for Hoop Wrapping of Type 2 High Pressure Tank (Type 2 고압용기 권선용 금속선재에 관한 연구)

  • HAN, JINMOOK;CHOI, SOOKWANG;LEE, SUNGHEE;CHO, KYUNGCHUL;HWANG, CHULMIN;JUNG, YOUNGUAN
    • Transactions of the Korean hydrogen and new energy society
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    • v.30 no.4
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    • pp.338-346
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    • 2019
  • During last years, hydrogen refueling infrastructure test and devices research for hydrogen station presented a significant growth consisting of the commercialization of fuel cell electric vehicles (FCEVs). However, we still have many challenges for making commercial hydrogen stations such as increased safety and cost reduction. This study demonstrates the low cost hydrogen storage tank (type 2) and effective winding method for high pressure hydrogen storage. We use numerical analysis to verify stress changes inside the wire according to the winding condition. Also liner size, winding wire size and wire tension were studied for the safety and cost down. Results show that the stress of winding wire decreased with increased winding angle and increased the liner diameter. On the other hand, the stress of winding wire increased according to the increased wire thickness and tension.

Effect of Winding Coil Diameter on AC Insulation Breakdown Voltage of Polyamideimide/Nanosilica Wire

  • Park, Jae-Jun;Woo, Myung-Ha;Lee, Jae-Young;Han, Se-Won
    • Transactions on Electrical and Electronic Materials
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    • v.17 no.4
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    • pp.231-234
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    • 2016
  • The AC insulation breakdown voltage was investigated for seven types of winding coils made of polyamideimide (PAI), flexural PAI (nanosilica 5 wt%) and anti-corona PAI (nanosilica 15 wt%) wires with various winding coil diameters of φ5, φ15 and φ25 mm. The winding coil was made of enameled wire with an enamel thickness of 30~50 μm, and the rectangular copper wire had a thickness of 0.77~ to 0.83 mm and width of 1.17~ to 1.23 mm, respectively. The insulation breakdown voltages of the original PAI coils with diameters of φ5, φ15 and φ25 mm were 7.30, 6.58, and 5.95 kV, respectively, and those values decreased as the winding coil diameter increased, regardless of the wire types.

강선적층방식을 이용한 냉간 단조용 초고압용기의 개발에 관한 연구

  • 박훈재;나경환;조남선
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2001.10a
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    • pp.77-81
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    • 2001
  • The present study is concemed with the design of high pressure container reinforced by winding wire used as a die component in cold forming of metals. The stress analysis for the design of high pressure container has been made under an optimal design criterion. The wire-winding equipment and the tension control unit according to the theoretical winding force are installed. The circumferential stresses at the inner wall of die housing are measured every turn of wire-winding. The measure stresses are in good agreement with the analytically predicted ones.

An Improvement of Lead Wire Winding Claims: A Case Study -Packing Reel and Deployment of Winding Process- (리드선 권선클레임 개선사례연구 -포장용기개량 및 권선공정전개를 중심으로-)

  • 강인선
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.25 no.1
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    • pp.49-55
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    • 2002
  • For making a lead terminal(condenser, resistor etc.), it is the matter that lead wire have to be supplied smooth without twisting and curving when it is supplied to the further processing (cutting, forming, attach process) after it being forwarded. The purpose of this study is to solve the winding claims of lead wire through the structural expansion of winding equipment to which the improvement of packing equipment to forward safely and supply the lead wire and QFD method are applied. The results of this study is available to solve the technical problem caused by the installation of the existing flyer system for the prevention of twisting and can expect the quality assurance as it prevents the claim(surface fault) caused by the bumping among lead wire which are involved in the packing equipment in its moving stage.

Effect of Ambient Temperature on Insulation Lifetime of Winding Coil Prepared with Polyamideimide/Nanosilica Enamelled Wire

  • Park, Jae-Jun;Woo, Myung-Ha;Lee, Jae-Young;Hwang, Don-Ha
    • Transactions on Electrical and Electronic Materials
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    • v.17 no.5
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    • pp.297-301
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    • 2016
  • The effects of ambient temperature and diameter on the insulation lifetime of winding coils prepared with polyamideimide (PAI), flexural PAI (nanosilica 5 wt%) and anti-corona PAI (nanosilica 15 wt%) wires were investigated. The winding coils were made of enameled wire with enamel thickness of 30~50 μm. The thickness and width of the rectangular copper wires were 0.77~0.83 mm and 1.17~1.23 mm, respectively. The insulation breakdown lifetime decreased with increasing ambient temperature regardless of wire type and winding coil diameter under an inverter surge of 1.5 kV/20 kHz. The insulation breakdown lifetimes of φ5 mm winding coils at 150, 200, and 250℃ were 11.38, 5.19, and 4.22 min respectively, and those of φ10 mm winding coils at 150, 200, and 250℃ were 11.32, 5.79, and 4.57min respectively. The winding coil diameter had little effect on the insulation lifetime.

Development of Design Method on High Pressure Vessel of 100L-700MPa Grade (100L-700MPa급 초고압 용기 설계 기술 개발)

  • Park, Bo-Gyu;Lee, Ho-Joon;Lee, In-Jun;Park, Si-Woo;Cho, Kyu-Shang
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.18 no.8
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    • pp.67-73
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    • 2019
  • An ultra-high pressure treatment device is a device used for increasing the shelf life of food by sterilizing it by applying hydrostatic pressure to solid or liquid food. The ultrahigh pressure treatment system developed in this study is a pressure vessel with a processing capacity of 100 L and a maximum pressure of 700 MPa. Pressure vessels for ultrahigh-pressure processing equipment are manufactured using wire-winding techniques. The design formula for making ultra-high pressure vessels with wire windings is given in ASME Section VIII - Division 3. In this study, the ratio of the cylinder to the winding area that can be applied in a wire-winding application was analyzed using a finite element analysis. Furthermore, the relationship between the variation of the residual stress in the vessel and the ratio of the winding area due to the variation of the winding tension was analyzed, and a design guide applicable to the actual product design was developed. Finally, the design equation was modified by presenting the coefficients to correct the difference between the finite element analysis and the design equation.

Novel Gravity Compensation Mechanism by Using Wire-Winding (와이어 와인딩을 이용한 신개념 중력보상 메커니즘)

  • Lee, DongGyu;Lee, SangHo;Park, JungWhan;Seo, TaeWon
    • Journal of Institute of Control, Robotics and Systems
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    • v.22 no.9
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    • pp.733-737
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    • 2016
  • In this paper, we propose a mechanism that can compensate for gravity in a robot manipulator. Industry robots generate torque due to carrying heavy weight. For this reason, the robots need high specification motors, which increases the prices of the robots and their production costs. In order to resolve these problems, a mechanism for gravity compensation has been developed using a spring and wire system. But this system has problems related to wire stretching. A winding mechanism is therefore used to supplement this drawback of the wire. The robot used was developed by the 1-DOF system. Analysis was performed for the performance of the mechanism. Experiments were conducted to compare simulation results and experimental results.

Relative Motion Control Methodology Using the Minimum Relative Error Between Two Systems (두 시스템간의 편차 최소화를 적용한 상대적 동작제어 방법)

  • 김성권
    • Journal of Institute of Control, Robotics and Systems
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    • v.9 no.12
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    • pp.994-1000
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    • 2003
  • A new relative motion control methodology for a following system to an independent leading system is proposed for controlling relative position, velocity, and tension etc. It is based on maintaining minimum relative error between two independent systems. The control command of the following system to a leading system is generated by adding the current command and the output of the relative error compensation. The proposed control method is implemented on the experimental equipment which is a wire winding-unwinding system to control the tension of the line. The results show the unwinding system(follower) following the independent motion of the winding system(leader) to control the constant tension of the line in order to keep the roller dancer in reference position. The relative motion control method proposed in this paper can be applied to high precision equipment for unwinding and winding fine wire, fine fiber, and tape etc.

The Analysis of Temperature on Superconducting Parallel Bifilar Winding (초전도 병렬 무유도권선의 온도 해석)

  • Oh, Yun-Sang;Lee, Sang-Jin;Bae, Joon-Han;Ko, Tae-Kuk
    • Proceedings of the KIEE Conference
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    • 1995.07a
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    • pp.134-136
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    • 1995
  • A superconducting parallel bifilar winding shows the phenomenon which is known as 'fast quench'. We analyzed the temperature characteristics on the winding by computer simulation, and confirmed theses by experiment. The temperature of the quenched point rose gradually as the source voltage was increased. The temperature changed radically as first, but had a gentle slope after a few milliseconds. As the source voltage was large, the initial quenched length also increased. The points in this quenched length showed almost the same temperature. but the points where initial quench had not occurred showed radical temperature gradient. We could observe that the temperature of the whole wire increased simultaneously as the fast quench occurred on the superconducting parallel bifilar winding, because a number of quenched points in that wire appeared at the same time.

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