• Title/Summary/Keyword: Sluice valve

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Development of the Rack-Bar Type Sluice Gate Applying the Hydrostatic Transmission (정유압식 래크바형 수문권양기의 개발)

  • Lee, Seong-Rae
    • Transactions of The Korea Fluid Power Systems Society
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    • v.7 no.4
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    • pp.15-22
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    • 2010
  • The typical hydraulic hoisting system of the rack-bar type sluice gate is composed of a hydraulic supply unit using an uni-directional pump, a direction control valve, a hydraulic motor, a counter balance valve, and flow control valves. Here, the hydrostatic transmission is applied to the hoisting system of rack-bar type sluice gate to simplify the operation of gate such that the upward and downward direction of gate is simply controlled by the direction of pump rotation. The new hydraulic hoisting system is composed of a bi-directional pump, a hydraulic motor, a counter balance valve, two check valves, two pilot-operated check valves, two relief valves and a shuttle valve. The characteristics of a suggested system are analyzed by computer simulations and experiments.

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Development of the Rack-Bar Type Sluice Gate Applying the Hydrostatic Transmission (정유압식 래크바형 수문권양기의 개발)

  • Lee, Seong-Rae
    • 유공압시스템학회:학술대회논문집
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    • 2010.06a
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    • pp.86-92
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    • 2010
  • The typical hydraulic hoisting system of the rack-bar type sluice gate is composed of a hydraulic supply unit using an uni-directional pump, a direction control valve, a hydraulic motor, a counter balance valve, and flow control valves. Here, the hydrostatic transmission is applied to the hoisting system of rack-bar type sluice gate to simplify the operation of gate such that the upward and downward direction of gate is simply controlled by the direction of pump rotation. The new hydraulic hoisting system is composed of a bi-directional pump, a hydraulic motor, a counter balance valve, two check valves, two pilot-operated check valves, two relief valves and a shuttle valve. The characteristics of a suggested system are analyzed by computer simulations and experiments.

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Computer Simulation Study of the Hydrostatic Transmission Applied to the Rack-Bar Type Sluice Gate (래크바형 수문권양기에 적용된 정유압장치의 컴퓨터 시뮬레이션에 의한 작동특성 연구)

  • Lee, S.R.
    • Transactions of The Korea Fluid Power Systems Society
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    • v.6 no.2
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    • pp.14-21
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    • 2009
  • The typical hydraulic hoisting system of the rack-bar type sluice gate is composed of a hydraulic supply unit using an uni-directional pump, a direction control valve, a hydraulic motor, a counter balance valve, and flow control valves. Here, the hydrostatic transmission is applied to the hoisting system of rack-bar type sluice gate to simplify the operation of gate such that the upward and downward direction of gate is simply controlled by the direction of pump rotation. The new hydraulic hoisting system is composed of a bi-directional pump, a hydraulic motor, two counter balance valves, two check valves, two pilot-operated check valves, two relief valves and a shuttle valve. The characteristics of a suggested system are analyzed by computer simulations.

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Implementation of Sluice Valve management systems using GPS and AR (GPS와 증강현실을 이용한 제수변 관리시스템 구현)

  • Kim, Hwa-Seon;Kim, Chang-Young;Lee, Imgeun
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.21 no.1
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    • pp.151-156
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    • 2017
  • In case of massive water leakage, it's crucial for field manager to quickly positioning the problematic valve and related ones. However, it's not easy for the system to find the corresponding valve and even if it's found, it can not respond quickly because it can't know the relevant information immediately. In this paper, we implement the system for identifying sluice valve positions using GPS and AR techniques. The proposed system is composed of hand held android device, remote database server and data acquisition device for DB creation. We utilize the android device's sensors including GPS, gyro, accelerometer, magnetic sensor. The system identifies the valve with matching between the position data from the remote database server, and current GPS locations of device. We use AR techniques to overlay the graphics pattern of valve positions and some additional informations on captured real scene. With this system, it will be fast and accurate for maintenance of sluice valve of municipal water system.

Study for the Energy Efficiency of Hydraulic System of Turnover-Type Sluice Gate (전도 수문용 유압장치의 에너지 효율에 관한 연구)

  • Lee, Seong-Rae
    • Proceedings of the KSME Conference
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    • 2007.05a
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    • pp.1225-1230
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    • 2007
  • The turnover-type sluice gate is typically actuated by the hydrauic system. The hydraulic system may be a open circuit type or a closed circuit type. The open circuit type hydraulic system is composed of a uni-directional pump, a directional control valve, pilot operated check valves, flow control valves, single-rod cylinders. The closed circuit type hydraulic system is composed of a bi-directional pump, pilot operated check valves, check valves, a counter balance valve, single-rod cylinders. The energy efficiencies of two hydraulic systems for the turnover-type sluice gate are compared here.

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Development of the Real-Time Simulator of a Turning-Type Sluice Gate Actuated by the Hydraulic Cylinder (유압실린더 구동식 전도 수문의 실시간 모의시험기 개발)

  • Lee, Seong-Rae
    • Transactions of the Korean Society of Automotive Engineers
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    • v.14 no.4
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    • pp.192-198
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    • 2006
  • The real-time simulator of a turning-type sluice gate actuated by the hydraulic cylinders is developed using a PC and a visual C++ program language. The real-time simulator receives the directional control valve signal selected by the operator using the mouse, updates the state variables of the turning-type sluice gate system responding to the control signal, and draws the moving figures of the sluice gate, cylinder, reserved water every drawing time on the PC monitor. Also, the operator can observe the sluice gate angle, cylinder force, cylinder pressures, and hydraulic power representing the operation of sluice gate system through the PC monitor every drawing time. The simulator can be a very useful tool to design and improve the turning-type sluice gate system.

Study for the Operational Characteristics of Closed Circuit Hydraulic System of Turnover-Type Sluice Gate (전도 수문용 폐회로형 유압장치의 작동 특성에 관한 연구)

  • Lee, Seong-Rae
    • Proceedings of the KSME Conference
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    • 2007.05a
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    • pp.897-902
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    • 2007
  • The turnover-type sluice gate is typically actuated by the open circuit hydrauic system since the single-rod cylinder is used rather than the double-rod cylinder. However, here the closed circuit hydrauic system is applied for the operation of turnover-type sluice gate for the purpose of convenient operation. The closed circuit hydraulic system of turnover-type sluice gate is composed of a bi-directional pump, single-rod cylinders, pilot operated check valves, check valves and a counter balance valve. The usefulness of the closed circuit hydraulic system is verified for the several operational conditions by the computer simulations.

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APPLICATION OF VISUALLISP PROGRAMMING LANGUAGE TO 3D SLUICE MODELING

  • Nguyen Thi Lan Truc;Po-Han Chen
    • International conference on construction engineering and project management
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    • 2007.03a
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    • pp.337-345
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    • 2007
  • Nowadays, it is convenient to use 3D modeling tools for general planning before construction. Normally, a 3D model is built with 3D CAD such as 3D Studio Max, Maya, etc. or simply with AutoCAD. All these software packages are effective in building 3D models but difficult to use, because many provided functions and tools require prior knowledge to build both 2D and 3D designs. Moreover, the traditional method of building 3D models is most time-consuming as experienced operators and manual input are required. Therefore, how to minimize the building time of 3D models and provide easy-to-use functions for users who are not familiar with 3D modeling becomes important. In this paper, the VisualLISP programming language is used to create a convenient tool for efficient generation of 3D components for the AutoCAD environment. This tool will be demonstrated with the generation of a 3D sluice, an artificial passage for water fitted with a valve or gate to stop or regulate water flow. With the tool, users only need to enter the parameters of a sluice in the edit box and the 3D model will be automatically generated in a few seconds. By changing parameters in the edit box and pressing the "OK" button, a new 3D sluice model will be generated in a short while.

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Optimal Design of Hydraulic System Using the Complex Method (컴플렉스법에 의한 유압시스템의 최적 설계)

  • Lee S.R.;Lee Y.B.;Park J.H.
    • Transactions of The Korea Fluid Power Systems Society
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    • v.1 no.4
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    • pp.1-8
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    • 2004
  • The optimum design parameters of several hydraulic systems are obtained using the complex method that is one kind of constrained direct search method. First, the parameters of lead-lag controller of the direct drive servovalve is designed using the complex method to satisfy the steady-state error requirement. Second, the optimum locating point of hydraulic cylinder Is determined to minimize the cylinder force in the operation range of rotational sluice gate. For the third application case, the optimum piston area of hydraulic cylinder is determined to minimize the man power to elevate the manually operated sluice gate.

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