WO2018074753A1 - Electro-hydraulic valve actuator system having automatic water hammer prevention function - Google Patents

Electro-hydraulic valve actuator system having automatic water hammer prevention function Download PDF

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Publication number
WO2018074753A1
WO2018074753A1 PCT/KR2017/010530 KR2017010530W WO2018074753A1 WO 2018074753 A1 WO2018074753 A1 WO 2018074753A1 KR 2017010530 W KR2017010530 W KR 2017010530W WO 2018074753 A1 WO2018074753 A1 WO 2018074753A1
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WIPO (PCT)
Prior art keywords
actuator
water hammer
automatic water
pressure
control unit
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PCT/KR2017/010530
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French (fr)
Korean (ko)
Inventor
한수민
권재범
정대희
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(주)에치케이씨
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Publication of WO2018074753A1 publication Critical patent/WO2018074753A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0025—Electrical or magnetic means
    • F16K37/0041—Electrical or magnetic means for measuring valve parameters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/85—Control during special operating conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/86—Control during or prevention of abnormal conditions
    • F15B2211/8606—Control during or prevention of abnormal conditions the abnormal condition being a shock
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/86—Control during or prevention of abnormal conditions
    • F15B2211/8609—Control during or prevention of abnormal conditions the abnormal condition being cavitation

Definitions

  • the present invention relates to an electro-hydraulic valve actuator, and more particularly, checks the actuator operation status and transmits and receives an operation signal at a long distance, and uses the actuator operation status (pressure, torque, operating position, etc.) through a sensor to perform water hammer phenomenon. It relates to an electric inlet valve actuator that monitors and thereby has an automatic water hammer.
  • Electro-hydraulic valve actuator system of the present invention is a valve control system that is essentially used in large industrial equipment such as power plants, water purification plants, determines the opening and closing of the valve to control the flow of fluid in the pipe, electric, pneumatic, hydraulic , Electro-hydraulic type.
  • the electrohydraulic valve actuator has a feature capable of precise control of a large-capacity actuator through electrical control of a hydraulic motor.
  • the electrohydraulic valve actuator system is being developed by combining with a user-centered remote control technology such as network, diagnostic control, etc., as the technical level of the control system is improved with the development of electric and electronic technology.
  • a user-centered remote control technology such as network, diagnostic control, etc.
  • the development of technology to prevent the damage of valves and pipes due to problems such as pressure changes, noise, vibration, etc. due to the flow is being actively made.
  • Water hammer in the automatic water hammering function which is an embodiment of the present invention, is a phenomenon in which the pressure of the fluid rises or falls rapidly as the flow velocity of the fluid in the pipe changes rapidly. It is caused by the cavitation caused by shrinkage due to the reduction of the pipe diameter due to, etc., and it is predicted by the sudden increase in the valve operating pressure during valve operation, and this water hammer is the shock wave caused by the inertial force of the fluid. It causes damage.
  • the pipe diameter increases, the rotational inertia through the installation of fly wheels on the pump, the water supply at the pressure lower point through the installation of the surge tank, the pressure change through the installation of the valve on the pump outlet side, the smooth operation of the valve through the closed check valve.
  • a water hammer arrester In order to prevent the water hammer phenomenon by improving the piping system, such as installing a water hammer arrester.
  • the present invention is to solve the above-mentioned problems, when the water hammer phenomenon occurs through the diagnostic control of the failure diagnosis by the actuator's status data to prevent water hammer due to the differential pressure at the valve inlet and outlet by the step-by-step operation of the actuator, including the It is an object to provide an electro-hydraulic valve actuator system with an automatic water hammer.
  • the user can immediately control the situation through real-time transmission and reception of fault diagnosis data and improve the stability in system operation by feedback through data storage.
  • the present invention is an electro-hydraulic valve actuator system having an automatic water hammer prevention function, the network control unit for transmitting and receiving data signals and operation control signals for the operation state of the actuator at a long distance, and by the network control unit Fault diagnosis unit for determining whether the water hammer is generated by using the built-in control module to control the actuator's operation according to the operation command and the actuator's operation status (pressure, torque, operating position, etc.) through the actuator's internal sensor, and the failure diagnosis unit.
  • an electro-hydraulic valve actuator system having an automatic water hammer prevention function including a hydraulic pump control unit for controlling the operation of the actuator according to the water hammer occurrence determination.
  • the network controller is a fieldbus network system supported by MODBUS or PROFIBUS, characterized in that it is possible to grasp intuitive actuator operation status by applying a touch screen type LED display together with network control of a plurality of actuators.
  • the fault diagnosis unit is responsible for controlling the actuator operation in response to the operation command received by the network control unit, and storing the actuator reference value range (pressure, torque, operating position, etc.) of the normal range by the user setting or manufacturer setting. It features.
  • the failure diagnosis unit converges pressure, torque, and operating position signals by the actuator internal sensor during the actuator operation, and compares and analyzes the pressure, torque, operating position, etc. generated in the actuator operation to the reference range, and the pressure exceeding the reference value.
  • the water hammer generation signal is transmitted to the network controller, and the water hammer prevention according to the stepwise operation of the actuator through the operation control signal input according to the water hammer generation is characterized.
  • the failure diagnosis unit may transmit a failure occurrence signal for an actuator internal module to the network controller when the actuator is out of the reference value range, and determine the failure occurrence unit.
  • the present invention after converging state data such as the pressure or torque of the actuator during the valve operation due to the pressure rise in the pipe, the large size due to the water hammer phenomenon by the actuator operation control according to the error analysis with the reference value You can prevent accidents.
  • FIG. 1 is a block diagram of an electrohydraulic valve actuator system of an automatic water hammer prevention function which is an embodiment of an electrohydraulic valve actuator according to a preferred embodiment of the present invention.
  • Figure 2 is a block diagram of the failure diagnosis for the automatic water hammer prevention function of the electrohydraulic valve actuator system according to an embodiment of the present invention
  • FIG 3 is a schematic diagram showing the appearance of the automatic water hammer prevention failure diagnosis of the electrohydraulic valve actuator of Figure 2
  • FIG. 4 is a schematic diagram showing an appearance of a hydraulic pump control unit of the electrohydraulic valve actuator of FIG. 1,
  • FIG. 5 is a schematic view showing the appearance of the electrohydraulic valve actuator system of FIG.
  • FIG. 1 is a block diagram of an electrohydraulic valve actuator system of an automatic water hammer prevention function, which is an embodiment of an electrohydraulic valve actuator according to an exemplary embodiment of the present invention
  • FIG. 2 is an electrohydraulic valve according to an exemplary embodiment of the present invention.
  • Block diagram of the fault diagnosis unit for the automatic water hammer prevention function of the actuator system Figure 3 is a schematic diagram showing the appearance of the automatic water hammer prevention fault diagnosis portion of the electrohydraulic valve actuator of Figure 2
  • Figure 4 is an electrohydraulic valve actuator of Figure 1
  • Fig. 5 is a schematic view showing the external appearance of the hydraulic pump control unit
  • Fig. 5 is a schematic view showing the external appearance of the electrohydraulic valve actuator system of Fig. 1.
  • the electrohydraulic valve actuator system 100 having an automatic water hammer prevention function is a network control unit 110, fault diagnosis unit 120, hydraulic pump control unit 130, electro-hydraulic type And valve actuator 140.
  • the network control unit 110 transmits and receives a data signal and an operation control signal for an operation state of the actuator 140 at a long distance.
  • the failure diagnosis unit 120 has a built-in control of the operation of the actuator 140 according to the operation command by the network control unit 110 and the actuator operation state (pressure, torque, operating position, etc.) through the internal sensor sensor Use the control module to determine if water hammer has occurred.
  • the hydraulic pump control unit 130 controls the operation of the actuator 140 according to the water hammer occurrence determination by the failure diagnosis unit 120.
  • the network controller 110 is a fieldbus network system supported by MODBUS or PROFIBUS, and it is possible to grasp an intuitive actuator operation state by applying a touch screen type LED display together with network control of a plurality of actuators 140. .
  • the fault diagnosis unit 120 is responsible for controlling the actuator operation according to the operation command received by the network control unit 110, the actuator operating reference value range of the normal range by the user setting or manufacturer setting (pressure, torque, operation Location, etc.).
  • the failure diagnosis unit 120 converges the pressure, torque, operating position signals by the internal sensor of the actuator 140 when the actuator is operated, and compares it with the reference value range for the pressure, torque, operating position, etc. generated during the actuator operation.
  • the water hammer generation signal is transmitted to the network controller 110 and the water hammer prevention is performed according to the stepwise operation of the actuator through the operation control signal input according to the water hammer generation. .
  • the failure diagnosis unit 120 transmits a failure occurrence signal for the internal module of the actuator 140 to the network controller 110 when the actuator falls short of the reference value range, and determines the failure occurrence unit.
  • the presence of failure by the partial stroke test for the time required for the operation position according to the user's signal input through the network control unit 110 and stores the data .
  • valve operation when the valve is opened by actuator operation, pressure, current, torque, etc. for valve operation are automatically detected to check the occurrence of water hammer in the pipe, and the water hammer phenomenon is controlled through the stepwise operation of the actuator by proportional control method. Prevents damage to valves and pipes.
  • the actuator 140 may have an automatic water hammer prevention function of the self-diagnosis function through the partial stroke test of the actuator for checking the operation performance of the actuator 140, and the network controller 110 communicates the fieldbus method of the PROFIBUS protocol.
  • the network is available.
  • the failure diagnosis unit 120 transmits and receives actuator operation state data and transmits an operation input signal of a user.
  • the failure diagnosis unit 120 may set an actuator state reference value (pressure, torque) by a user or a manufacturer before using the actuator 140.
  • the network controller 110 of FIG. 1 is a network using fieldbus communication such as PROFIBUS, and is implemented as a bidirectional network for transmitting and receiving the state data of the actuator 140 and operation signals of external users.
  • PROFIBUS fieldbus communication
  • the actuator transmits driving data such as pressure and torque by an internal sensor of a water hammer to an external user in real time, and activates the water hammer prevention function according to the water hammer occurrence determination in the fault diagnosis unit 120. Send the operation control status to an external user.
  • the actuator diagnostic data according to an external user's continuous test command input and testing to the actuator 140 is transmitted through the network controller 110.
  • the failure diagnosis unit 120 is a control board for the main function of the actuator operation command and the operation control of the actuator for the failure situation, such as convergence of the operation signal of the external user, water hammer phenomenon 124, a power board 123 for assisting power to the fault diagnosis unit 120 during operation of the actuator and securing power during power failure, and an encoder unit 122 for detecting and correcting the rotation angle (number of times) of the actuator. And, it is configured to include a measuring unit 121, the gear unit 125 for detecting the pressure and torque during the actuator operation.
  • the operation of the actuator is determined together with the failure diagnosis through comparison analysis with the reference value.
  • the water hammer generation signal is transmitted to the network controller 110, and at the same time, the water hammer prevention function is operated by controlling the stepwise operation of the actuator according to the reference value exceeding range.
  • the step-by-step operation control of the actuator is operated by limiting the time and rotation angle in accordance with the program designed in the control board 124 of the failure diagnosis unit 120, the operation control according to the signal from the failure diagnosis unit 120
  • the pump control unit 130 is operated through the hydraulic control in the hydraulic pump 133 through the hydraulic motor 131.
  • the rotation of the valve is made by the rotary motion of the actuator through the hydraulic pressure, the rotation of the actuator is made precise control and correction through the rotation speed measurement through the encoder unit 122 of the failure diagnosis unit 120.
  • the valve when the time required to operate the rotary radius of the actuator 140 is set to 90 seconds, the valve is completely opened in one operation without stopping in normal operation.
  • opening the valve according to the differential pressure distribution between the front and rear ends of the valve through the operation it is possible to prevent damage to the valve and the pipe due to the water hammer phenomenon due to bubble collapse due to the flow path pressure rise or cavitation.
  • FIGS. 4 and 5 are cross-sectional views of the fault diagnosis unit according to an embodiment of the present invention
  • a second embodiment of the present invention is a partial stroke when a test command is input by an external user for a constant check for the water hammer prevention function of the actuator. Based on the test, the micro-movement test with a rotation radius of 5 degrees or less is performed according to the user or manufacturer's setting.
  • the fault check message is delivered to the external user with the timeout signal.
  • the failure history management of the actuator is made by automatically storing the actuator state data for the test, it is possible to ensure the use stability for the electro-hydraulic actuator system and piping system.
  • actuator measuring section 122 encoder section
  • gear unit 130 hydraulic pump control unit
  • hydraulic motor 132 hydraulic pump measuring unit
  • hydraulic pump 140 electro-hydraulic actuator

Abstract

An electro-hydraulic valve actuator of the present invention comprises: a network control unit for remote transmission and reception of an operation condition and an operation signal of the actuator; a failure diagnosis unit for determining whether water hammer occurs, according to state data such as pressure, when the actuator is operated; and a hydraulic pump control unit for controlling an operation of the actuator according to the result of failure determination. In addition, a system of the present invention is configured to: when the actuator is operated to open a valve, automatically detect pressure, current, torque, and the like required for the operation of the valve, so as to check the occurrence condition of water hammer in a pipe; perform stepwise control of the operation of the actuator by means of a proportional control method, so as to prevent the valve, the pipe, and the like from being damaged due to water hammer; and have a function of diagnosing a failure of the actuator, so as to check the stepwise operation performance of the actuator. Accordingly, it is possible to prevent the actuator from breaking down due to water hammer and the like in a pipe during the operation thereof, and to significantly improve the stability of a pipe system through the storage of state data.

Description

자동수격방지 기능을 가지는 전기유압식 밸브 액추에이터 시스템Electro-hydraulic valve actuator system with automatic water hammer
본 발명은 전기유압식 밸브 액추에이터에 관한 것으로서, 더욱 상세하게는 원거리에서 액추에이터 동작 상황 확인 및 동작 신호를 송수신하고, 센서를 통한 액추에이터 동작 상황(압력, 토크, 동작 위치 등)을 이용하여, 수격현상을 감시하고 이를 통해 자동수격방지 기능을 가지는 전기 유입식 밸브 액추에이터에 관한 것이다.The present invention relates to an electro-hydraulic valve actuator, and more particularly, checks the actuator operation status and transmits and receives an operation signal at a long distance, and uses the actuator operation status (pressure, torque, operating position, etc.) through a sensor to perform water hammer phenomenon. It relates to an electric inlet valve actuator that monitors and thereby has an automatic water hammer.
본 발명의 전기유압식 밸브 액추에이터 시스템은 발전소, 정수장 등 대형 산업 설비에서 필수적으로 사용되는 밸브 제어용 시스템으로서, 배관 내 유체의 흐름을 제어하는 밸브의 개폐를 결정하며, 동력 방식에 따라 전기식, 공압식, 유압식, 전기유압식으로 구분된다. 상기 전기유압식 밸브 액추에이터는 유압식 모터의 전기 제어를 통하여 대용량 액추에이터의 정밀 제어가 가능한 특징을 가지고 있다. Electro-hydraulic valve actuator system of the present invention is a valve control system that is essentially used in large industrial equipment such as power plants, water purification plants, determines the opening and closing of the valve to control the flow of fluid in the pipe, electric, pneumatic, hydraulic , Electro-hydraulic type. The electrohydraulic valve actuator has a feature capable of precise control of a large-capacity actuator through electrical control of a hydraulic motor.
상기 전기유압식 밸브 액추에이터 시스템은 전기전자 기술의 발달에 따라 제어 시스템에 대한 기술 수준이 향상되어가고 있음에 따라 네트워크, 진단제어 등 사용자 중심의 원격 제어 기술과 접목되어 발전하고 있으며, 특히 배관 내 유체의 흐름에 따른 압력 변화, 소음, 진동 등 문제 발생에 의한 밸브 및 배관 파손 등을 방지하기 위한 기술 개발이 활발히 이루어지고 있다.The electrohydraulic valve actuator system is being developed by combining with a user-centered remote control technology such as network, diagnostic control, etc., as the technical level of the control system is improved with the development of electric and electronic technology. The development of technology to prevent the damage of valves and pipes due to problems such as pressure changes, noise, vibration, etc. due to the flow is being actively made.
본 발명의 실시 예인 자동수격방지 기능에서의 수격현상이란 배관 내 유체의 유속이 급격히 변화함에 따라 발생되는 유체 압력의 급상승 또는 급하강하는 현상이며, 주로 펌프 정지로 인한 공급 밸브의 급폐쇄, 관내 이물질 등으로 인한 관 지름 축소로 인한 수축부 발생에 따른 공동현상(cavitation)으로 발생되며, 밸브 작동 시 밸브 작동압의 급상승을 통해 예측되어지고, 이러한 수격현상은 유체의 관성력에 의한 충격파로 배관 시스템의 파손 원인이 되고 있다. Water hammer in the automatic water hammering function, which is an embodiment of the present invention, is a phenomenon in which the pressure of the fluid rises or falls rapidly as the flow velocity of the fluid in the pipe changes rapidly. It is caused by the cavitation caused by shrinkage due to the reduction of the pipe diameter due to, etc., and it is predicted by the sudden increase in the valve operating pressure during valve operation, and this water hammer is the shock wave caused by the inertial force of the fluid. It causes damage.
종래 유공압 시스템에서는 관지름 증가, 펌프에 fly wheel 설치통한 회전관성 증가, surge tank 설치 통한 압력 저하지점에서의 물 보급, 펌프 토출구 측 밸브 설치 통한 압력 변화 최소화, 완폐형 체크 밸브 통한 밸브의 완만한 조작, 수격방지기 설치 등, 배관 시스템 개선을 통하여 수격 현상을 방지하고자 하였다. In conventional pneumatic systems, the pipe diameter increases, the rotational inertia through the installation of fly wheels on the pump, the water supply at the pressure lower point through the installation of the surge tank, the pressure change through the installation of the valve on the pump outlet side, the smooth operation of the valve through the closed check valve. In order to prevent the water hammer phenomenon by improving the piping system, such as installing a water hammer arrester.
하지만, 기존 설치된 유공압 시스템에서 상기 방법을 적용하기 위해서는 많은 시간적, 경제적 비용의 증가가 필요하고, 장시간 배관 내에서의 유체 흐름 시 발생될 수 있는 수축부에 의한 공동 현상 등 예기치 못한 현상에 따른 수격 현상 발생을 방지하지 못하는 실정이었다. 특히 상기 수격 현상 발생 시 밸브 디스크 또는 배관이 파손될 경우, 고압의 유체 흐름에 따른 대형사고 발생 위험이 존재한다.However, in order to apply the above method in the existing pneumatic system, it requires much time and economic cost, and water hammer phenomenon due to unexpected phenomenon such as cavitation caused by shrinkage part that may occur during fluid flow in a long pipe. Could not prevent the occurrence. In particular, when the valve disk or the pipe is damaged when the water hammer occurs, there is a risk of a large accident due to high-pressure fluid flow.
본 발명은 상술한 문제점을 해결하기 위한 것으로서, 수격현상 발생 시 액추에이터의 상태 데이터 분석에 의한 고장진단제어를 통하여 액추에이터의 단계별 작동으로 밸브 입출구에서의 차압 해소에 따른 수격 현상을 방지하고, 이를 포함하는 자동수격방지 기능을 가진 전기유압식 밸브 액추에이터 시스템을 제공하는 것을 목적으로 한다.The present invention is to solve the above-mentioned problems, when the water hammer phenomenon occurs through the diagnostic control of the failure diagnosis by the actuator's status data to prevent water hammer due to the differential pressure at the valve inlet and outlet by the step-by-step operation of the actuator, including the It is an object to provide an electro-hydraulic valve actuator system with an automatic water hammer.
또한, 수격현상 발생 시 고장진단 데이터의 실시간 송수신을 통하여 사용자의 즉각적인 상황 제어가 가능하게 하며, 데이터 저장을 통한 피드백으로 시스템 운영에서의 안정성을 향상 시키는 것을 목적으로 한다. In addition, when the water hammer occurs, the user can immediately control the situation through real-time transmission and reception of fault diagnosis data and improve the stability in system operation by feedback through data storage.
그러나 본 발명의 목적은 상기에 언급된 목적으로 제한되지 않으며, 언급되지 않은 또 다른 목적은 아래의 기재로부터 당업자에게 명확하게 이해될 수 있을 것이다.However, the object of the present invention is not limited to the above-mentioned object, another object that is not mentioned will be clearly understood by those skilled in the art from the following description.
상기 목적을 달성하기 위하여, 본 발명은 자동수격방지 기능을 가지는 전기유압식 밸브 액추에이터 시스템에 있어서, 원거리에서 액추에이터의 동작 상황에 대한 데이터 신호 및 동작 제어 신호를 송수신하는 네트워크 제어부와, 상기 네트워크 제어부에 의한 동작 명령에 따른 액추에이터의 동작 제어 및 액추에이터 내부 센서를 통한 액추에이터 동작 상황(압력, 토크, 동작 위치 등)을 내장된 제어모듈을 이용하여 수격 발생 유무를 판단하는 고장진단부와, 상기 고장진단부에 의한 수격 발생 판단에 따른 액추에이터의 동작 제어를 위한 유압펌프제어부를 포함하는 자동수격방지 기능을 가지는 전기유압식 밸브 액추에이터 시스템이 제공된다. In order to achieve the above object, the present invention is an electro-hydraulic valve actuator system having an automatic water hammer prevention function, the network control unit for transmitting and receiving data signals and operation control signals for the operation state of the actuator at a long distance, and by the network control unit Fault diagnosis unit for determining whether the water hammer is generated by using the built-in control module to control the actuator's operation according to the operation command and the actuator's operation status (pressure, torque, operating position, etc.) through the actuator's internal sensor, and the failure diagnosis unit. There is provided an electro-hydraulic valve actuator system having an automatic water hammer prevention function including a hydraulic pump control unit for controlling the operation of the actuator according to the water hammer occurrence determination.
이때, 상기 네트워크 제어부는 MODBUS 또는 PROFIBUS 지원에 따른 필드버스 네트워크 시스템으로 다수의 액추에이터에 대한 네트워크 제어와 함께 터치스크린 방식의 LED display 적용에 의한 직관적인 액추에이터 동작 상황 파악이 가능한 것을 특징으로 한다. In this case, the network controller is a fieldbus network system supported by MODBUS or PROFIBUS, characterized in that it is possible to grasp intuitive actuator operation status by applying a touch screen type LED display together with network control of a plurality of actuators.
또한, 상기 고장진단부는 상기 네트워크 제어부에 의한 동작 명령 수신에 따른 액추에이터 동작 제어를 담당하며, 사용자 설정 또는 제조사 설정에 의한 정상 범위의 액추에이터 동작 기준값 범위(압력, 토크, 동작위치 등)을 저장하는 것을 특징으로 한다. In addition, the fault diagnosis unit is responsible for controlling the actuator operation in response to the operation command received by the network control unit, and storing the actuator reference value range (pressure, torque, operating position, etc.) of the normal range by the user setting or manufacturer setting. It features.
그리고 상기 고장진단부는 액추에이터 동작 시 액추에이터 내부 센서에 의한 압력, 토크, 동작 위치 신호를 수렴하여, 액추에이터 동작 시 발생되는 압력, 토크, 동작 위치 등에 대한 상기 기준값 범위와 비교 분석하여, 기준값을 초과하는 압력, 토크가 발생될 경우, 수격 발생 신호를 상기 네트워크 제어부로 전송하고, 수격 발생에 따른 동작 제어 신호입력을 통한 액추에이터의 단계별 동작에 따른 수격 방지를 특징으로 한다. The failure diagnosis unit converges pressure, torque, and operating position signals by the actuator internal sensor during the actuator operation, and compares and analyzes the pressure, torque, operating position, etc. generated in the actuator operation to the reference range, and the pressure exceeding the reference value. When the torque is generated, the water hammer generation signal is transmitted to the network controller, and the water hammer prevention according to the stepwise operation of the actuator through the operation control signal input according to the water hammer generation is characterized.
또한, 상기 고장진단부는 액추에이터 동작 시 상기 기준값 범위 미달 시 액추에이터 내부 모듈에 대한 고장 발생 신호를 상기 네트워크 제어부로 전송하고, 고장 발생부를 판단하는 것을 특징으로 한다. The failure diagnosis unit may transmit a failure occurrence signal for an actuator internal module to the network controller when the actuator is out of the reference value range, and determine the failure occurrence unit.
또한, 상기 액추에이터의 동작에 대한 상시 점검을 위하여, 상기 네트워크 제어부를 통한 사용자의 신호 입력에 따른 동작 위치 대비 소요 시간에 대한 파샬스트로크 시험에 의한 고장 발생 유무 확인 및 데이터 저장을 특징으로 한다. In addition, in order to constantly check the operation of the actuator, it characterized in that the failure occurred by the partial stroke test for the time required compared to the operation position according to the user's signal input through the network control, and characterized in that the data storage.
본 발명의 특징 및 이점들은 첨부도면에 의거한 다음의 상세한 설명으로 더욱 명백해질 것이다.The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.
이에 앞서 본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이고 사전적인 의미로 해석되어서는 아니 되며, 발명자가 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합되는 의미와 개념으로 해석되어야 한다.Prior to this, the terms or words used in this specification and claims are not to be interpreted in a conventional and dictionary sense, and the inventors may appropriately define the concept of terms in order to best explain their invention in the best way possible. Based on the principle that the present invention should be interpreted as meaning and concept corresponding to the technical idea of the present invention.
이상에서 살펴본 바와 같이 본 발명에 따르면, 배관 내 압력 상승으로 인한 밸브 동작 시 액추에이터의 압력 또는 토크 등의 상태 데이터를 수렴한 후, 기준값과의 오차 분석에 따른 액추에이터 동작 제어로 수격 현상 발생에 의한 대형 사고를 방지할 수 있다.As described above, according to the present invention, after converging state data such as the pressure or torque of the actuator during the valve operation due to the pressure rise in the pipe, the large size due to the water hammer phenomenon by the actuator operation control according to the error analysis with the reference value You can prevent accidents.
또한, 상태 데이터에 대한 저장 및 네트워크 전송 및 상시 동작 시험을 통한 자기 진단을 통해 배관시스템의 운영 안정성을 향상시킬 수 있는 효과가 있다.In addition, there is an effect that can improve the operational stability of the piping system through the self-diagnosis through the storage of the state data, network transmission and always-on test.
도 1은 본 발명의 바람직한 일실시예에 따른 전기유압식 밸브 액추에이터의 실시예인 자동수격방지 기능의 전기유압식 밸브 액추에이터 시스템 블록도이고,1 is a block diagram of an electrohydraulic valve actuator system of an automatic water hammer prevention function which is an embodiment of an electrohydraulic valve actuator according to a preferred embodiment of the present invention.
도 2는 본 발명의 바람직한 일실시예에 따른 전기유압식 밸브 액추에이터 시스템의 자동수격방지 기능에 대한 고장진단부의 블록도이고,Figure 2 is a block diagram of the failure diagnosis for the automatic water hammer prevention function of the electrohydraulic valve actuator system according to an embodiment of the present invention,
도 3은 도 2의 전기유압식 밸브 액추에이터의 자동수격방지 고장진단부의 외관을 나타낸 개략도이고,Figure 3 is a schematic diagram showing the appearance of the automatic water hammer prevention failure diagnosis of the electrohydraulic valve actuator of Figure 2,
도 4는, 도 1의 전기유압식 밸브 액추에이터의 유압펌프제어부의 외관을 나타낸 개략도이고,4 is a schematic diagram showing an appearance of a hydraulic pump control unit of the electrohydraulic valve actuator of FIG. 1,
도 5는, 도 1의 전기유압식 밸브 액추에이터 시스템의 외관을 나타낸 개략도이다.5 is a schematic view showing the appearance of the electrohydraulic valve actuator system of FIG.
이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 설명하기로 한다. 이 과정에서 도면에 도시된 선들의 두께나 구성요소의 크기 등은 설명의 명료성과 편의상 과장되게 도시되어 있을 수 있다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.
또한, 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로서 이는 사용자, 운용자의 의도 또는 관례에 따라 달라질 수 있다. 그러므로 이러한 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 하여 내려져야 할 것이다.In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, the definitions of these terms should be made based on the contents throughout the specification.
아울러, 아래의 실시예는 본 발명의 권리범위를 한정하는 것이 아니라 본 발명의 청구범위에 제시된 구성요소의 예시적인 사항에 불과하며, 본 발명의 명세서 전반에 걸친 기술사상에 포함되고 청구범위의 구성요소에서 균등물로서 치환 가능한 구성요소를 포함하는 실시예는 본 발명의 권리범위에 포함될 수 있다.In addition, the following examples are not intended to limit the scope of the present invention but merely illustrative of the components set forth in the claims of the present invention, which are included in the technical spirit throughout the specification of the present invention and constitute the claims Embodiments that include a substitutable component as an equivalent in the element may be included in the scope of the present invention.
첨부된 도 1은 본 발명의 바람직한 일실시예에 따른 전기유압식 밸브 액추에이터의 실시예인 자동수격방지 기능의 전기유압식 밸브 액추에이터 시스템 블록도이고, 도 2는 본 발명의 바람직한 일실시예에 따른 전기유압식 밸브 액추에이터 시스템의 자동수격방지 기능에 대한 고장진단부의 블록도이고, 도 3은 도 2의 전기유압식 밸브 액추에이터의 자동수격방지 고장진단부의 외관을 나타낸 개략도이고, 도 4는, 도 1의 전기유압식 밸브 액추에이터의 유압펌프제어부의 외관을 나타낸 개략도이고, 도 5는, 도 1의 전기유압식 밸브 액추에이터 시스템의 외관을 나타낸 개략도이다.1 is a block diagram of an electrohydraulic valve actuator system of an automatic water hammer prevention function, which is an embodiment of an electrohydraulic valve actuator according to an exemplary embodiment of the present invention, and FIG. 2 is an electrohydraulic valve according to an exemplary embodiment of the present invention. Block diagram of the fault diagnosis unit for the automatic water hammer prevention function of the actuator system, Figure 3 is a schematic diagram showing the appearance of the automatic water hammer prevention fault diagnosis portion of the electrohydraulic valve actuator of Figure 2, Figure 4 is an electrohydraulic valve actuator of Figure 1 Fig. 5 is a schematic view showing the external appearance of the hydraulic pump control unit, and Fig. 5 is a schematic view showing the external appearance of the electrohydraulic valve actuator system of Fig. 1.
도 1 이하에 도시된 바와 같이, 본 발명에 따른 자동수격방지 기능을 가지는 전기유압식 밸브 액추에이터 시스템(100)은 네트워크 제어부(110), 고장진단부(120), 유압펌프제어부(130), 전기유압식 밸브 액추에이터(140)을 포함한다.As shown in Figure 1, the electrohydraulic valve actuator system 100 having an automatic water hammer prevention function according to the present invention is a network control unit 110, fault diagnosis unit 120, hydraulic pump control unit 130, electro-hydraulic type And valve actuator 140.
상기 네트워크 제어부(110)는 원거리에서 액추에이터(140)의 동작 상황에 대한 데이터 신호 및 동작 제어 신호를 송수신한다.The network control unit 110 transmits and receives a data signal and an operation control signal for an operation state of the actuator 140 at a long distance.
또한, 상기 고장진단부(120)는 상기 네트워크 제어부(110)에 의한 동작 명령에 따른 액추에이터(140)의 동작 제어 및 액추에이터 내부 센서를 통한 액추에이터 동작 상황(압력, 토크, 동작 위치 등)을 내장된 제어모듈을 이용하여 수격 발생 유무를 판단한다.In addition, the failure diagnosis unit 120 has a built-in control of the operation of the actuator 140 according to the operation command by the network control unit 110 and the actuator operation state (pressure, torque, operating position, etc.) through the internal sensor sensor Use the control module to determine if water hammer has occurred.
그리고 상기 유압펌프제어부(130)는 상기 고장진단부(120)에 의한 수격 발생 판단에 따른 액추에이터(140)의 동작을 제어한다.The hydraulic pump control unit 130 controls the operation of the actuator 140 according to the water hammer occurrence determination by the failure diagnosis unit 120.
이때, 상기 네트워크 제어부(110)는 MODBUS 또는 PROFIBUS 지원에 따른 필드버스 네트워크 시스템으로 다수의 액추에이터(140)에 대한 네트워크 제어와 함께 터치스크린 방식의 LED display 적용에 의한 직관적인 액추에이터 동작 상황 파악이 가능하다.In this case, the network controller 110 is a fieldbus network system supported by MODBUS or PROFIBUS, and it is possible to grasp an intuitive actuator operation state by applying a touch screen type LED display together with network control of a plurality of actuators 140. .
또한, 상기 고장진단부(120)는 상기 네트워크 제어부(110)에 의한 동작 명령 수신에 따른 액추에이터 동작 제어를 담당하며, 사용자 설정 또는 제조사 설정에 의한 정상 범위의 액추에이터 동작 기준값 범위(압력, 토크, 동작위치 등)을 저장한다.In addition, the fault diagnosis unit 120 is responsible for controlling the actuator operation according to the operation command received by the network control unit 110, the actuator operating reference value range of the normal range by the user setting or manufacturer setting (pressure, torque, operation Location, etc.).
그리고 상기 고장진단부(120)는 액추에이터 동작 시 액추에이터(140)의 내부 센서에 의한 압력, 토크, 동작 위치 신호를 수렴하여, 액추에이터 동작 시 발생되는 압력, 토크, 동작 위치 등에 대한 상기 기준값 범위와 비교 분석하여, 기준값을 초과하는 압력, 토크가 발생될 경우, 수격 발생 신호를 상기 네트워크 제어부(110)로 전송하고, 수격 발생에 따른 동작 제어 신호입력을 통한 액추에이터의 단계별 동작에 따른 수격 방지를 수행한다.In addition, the failure diagnosis unit 120 converges the pressure, torque, operating position signals by the internal sensor of the actuator 140 when the actuator is operated, and compares it with the reference value range for the pressure, torque, operating position, etc. generated during the actuator operation. When the pressure and torque exceeding the reference value is generated, the water hammer generation signal is transmitted to the network controller 110 and the water hammer prevention is performed according to the stepwise operation of the actuator through the operation control signal input according to the water hammer generation. .
또한, 상기 고장진단부(120)는 액추에이터 동작 시 상기 기준값 범위 미달 시 액추에이터(140) 내부 모듈에 대한 고장 발생 신호를 상기 네트워크 제어부(110)로 전송하고, 고장 발생부를 판단한다.In addition, the failure diagnosis unit 120 transmits a failure occurrence signal for the internal module of the actuator 140 to the network controller 110 when the actuator falls short of the reference value range, and determines the failure occurrence unit.
또한, 상기 액추에이터(140)의 동작에 대한 상시 점검을 위하여, 상기 네트워크 제어부(110)를 통한 사용자의 신호 입력에 따른 동작 위치 대비 소요 시간에 대한 파샬스트로크 시험에 의한 고장 발생 유무 확인 및 데이터 저장한다.In addition, in order to check the operation of the actuator 140 at all times, the presence of failure by the partial stroke test for the time required for the operation position according to the user's signal input through the network control unit 110 and stores the data .
즉, 액추에이터 작동에 의한 밸브 열림 동작 시 밸브 동작을 위한 압력, 전류, 토크 등을 자동 감지하여 배관 내에서의 수격 발생 상황을 확인하고, 비례 제어 방식에 의한 액추에이터의 단계별 동작 제어를 통하여 수격 현상으로 인한 밸브, 배관 등의 파손을 방지한다. In other words, when the valve is opened by actuator operation, pressure, current, torque, etc. for valve operation are automatically detected to check the occurrence of water hammer in the pipe, and the water hammer phenomenon is controlled through the stepwise operation of the actuator by proportional control method. Prevents damage to valves and pipes.
또한, 상기 액추에이터(140)의 단계별 동작 성능 확인을 위한 액추에이터의 파샬스트록 시험을 통한 자기 진단기능의 자동수격방지 기능을 가질 수 있으며, 상기 네트워크 제어부(110)는 프로피버스 프로토콜한 필드버스 방식의 통신 네트워크를 이용할 수 있다.In addition, the actuator 140 may have an automatic water hammer prevention function of the self-diagnosis function through the partial stroke test of the actuator for checking the operation performance of the actuator 140, and the network controller 110 communicates the fieldbus method of the PROFIBUS protocol. The network is available.
그리고 상기 고장진단부(120)에서는 액추에이터 동작 상태 데이터의 송수신 및 사용자의 동작 입력신호 전송이 이루어진다.The failure diagnosis unit 120 transmits and receives actuator operation state data and transmits an operation input signal of a user.
또한, 상기 고장진단부(120)는 액추에이터(140) 사용 전 사용자 또는 제조자에 의한 액추에이터 상태 기준값(압력, 토크) 설정이 가능하다In addition, the failure diagnosis unit 120 may set an actuator state reference value (pressure, torque) by a user or a manufacturer before using the actuator 140.
따라서 액추에이터 내부 센서에 의한 동작 상태 데이터를 수렴하여 기준값 초과 시 수격방지를 위한 액추에이터 동작 제어 신호를 전송하고, 기준값 미달 시 고장발생 전송과 함께 상태 데이터 저장을 통한 액추에이터 고장 발생 상황에 대한 피드백이 가능하다.Therefore, it is possible to collect the operation state data by the actuator internal sensor and transmit the actuator operation control signal to prevent water hammer when the reference value is exceeded, and it is possible to feedback the occurrence of the actuator failure by saving the state data along with the transmission of the failure when the reference value is not met. .
한편, 도 1의 네트워크 제어부(110)은 PROFIBUS 등 필드버스 통신을 이용한 네트워크로서, 액추에이터(140)의 상태 데이터 및 외부 사용자의 동작신호 송수신을 위한 양방향 네트워크로 구현된다. Meanwhile, the network controller 110 of FIG. 1 is a network using fieldbus communication such as PROFIBUS, and is implemented as a bidirectional network for transmitting and receiving the state data of the actuator 140 and operation signals of external users.
구체적으로 수격 발생에 대한 액추에이터 내부 센서에 의한 압력, 토크 등 구동 데이터를 실시간으로 외부 사용자에게 전송하고, 고장진단부(120)에서 상기 구동 데이터에 따른 수격 발생 판단에 따른 수격 방지 기능 활성화를 통한 액추에이터 동작 제어 상황을 외부 사용자에게 송신한다.Specifically, the actuator transmits driving data such as pressure and torque by an internal sensor of a water hammer to an external user in real time, and activates the water hammer prevention function according to the water hammer occurrence determination in the fault diagnosis unit 120. Send the operation control status to an external user.
또한, 상기 액추에이터(140)에 대한 외부 사용자의 상시 시험 명령 입력 및 시험에 따른 액추에이터 진단 데이터가 상기 네트워크 제어부(110)를 통하여 전송된다.In addition, the actuator diagnostic data according to an external user's continuous test command input and testing to the actuator 140 is transmitted through the network controller 110.
한편, 도 2 및 도 3에 도시된 바와 같이, 상기 고장진단부(120)는 외부 사용자의 동작 신호 수렴, 수격 현상 등 고장 상황에 대한 액추에이터 동작 명령 및 액추에이터의 동작 제어를 주 기능으로 하는 제어보드(124)와, 액추에이터 동작 시 상기 고장진단부(120)에 대한 전원 보조 및 정전 시 전원 확보를 위한 파워보드(123)와, 액추에이터의 회전각도(횟수) 감지 및 보정을 위한 엔코더부(122)와, 액추에이터 동작 시 압력 및 토크를 감지하는 측정부(121)와, 기어부(125)를 포함하여 구성된다.On the other hand, as shown in Figures 2 and 3, the failure diagnosis unit 120 is a control board for the main function of the actuator operation command and the operation control of the actuator for the failure situation, such as convergence of the operation signal of the external user, water hammer phenomenon 124, a power board 123 for assisting power to the fault diagnosis unit 120 during operation of the actuator and securing power during power failure, and an encoder unit 122 for detecting and correcting the rotation angle (number of times) of the actuator. And, it is configured to include a measuring unit 121, the gear unit 125 for detecting the pressure and torque during the actuator operation.
또한, 상기 액추에이터 측정부(121) 및 유압펌프 측정부(132)를 통한 상태 데이터 수렴 후 기준값과의 비교 분석을 통한 고장 진단과 함께 액추에이터의 동작을 결정한다. In addition, after the convergence of the state data through the actuator measuring unit 121 and the hydraulic pump measuring unit 132, the operation of the actuator is determined together with the failure diagnosis through comparison analysis with the reference value.
상기 액추에이터의 동작을 측정값과 기준값에 따라 설명하면, When the operation of the actuator is described according to the measured value and the reference value,
1) 측정값이 기준값 범위를 만족하거나 미만일 경우, 정상 작동을 하며,1) If the measured value meets or falls below the standard value range, it operates normally.
2) 기준값을 초과 할 경우, 수격 발생 신호를 상기 네트워크 제어부(110)로 전송하며, 동시에 기준값 초과 범위에 따라 액추에이터의 단계별 동작 제어를 통한 수격 방지 기능이 작동된다. 2) When the reference value is exceeded, the water hammer generation signal is transmitted to the network controller 110, and at the same time, the water hammer prevention function is operated by controlling the stepwise operation of the actuator according to the reference value exceeding range.
상기 액추에이터의 단계별 동작 제어는 고장진단부(120)의 제어보드(124)에서 설계된 프로그램에 따라 시간 및 회전 각도를 제한하여 작동하며, 상기 작동 제어는 고장진단부(120)에서의 신호에 따라 유압펌프제어부(130)에서 유압모터(131)를 통한 유압펌프(133)에서의 유압 제어를 통해 작동된다.The step-by-step operation control of the actuator is operated by limiting the time and rotation angle in accordance with the program designed in the control board 124 of the failure diagnosis unit 120, the operation control according to the signal from the failure diagnosis unit 120 The pump control unit 130 is operated through the hydraulic control in the hydraulic pump 133 through the hydraulic motor 131.
또한, 상기 유압을 통한 액추에이터의 회전 운동으로 밸브의 회전이 이루어지며, 상기 액추에이터의 회전은 고장진단부(120)의 엔코터부(122)를 통한 회전수 측정을 통해 정밀 제어 및 보정이 이루어진다. In addition, the rotation of the valve is made by the rotary motion of the actuator through the hydraulic pressure, the rotation of the actuator is made precise control and correction through the rotation speed measurement through the encoder unit 122 of the failure diagnosis unit 120.
예를 들어, 상기 액추에이터(140)의 회전반경 90도 작동 시 소요 시간을 90초로 설정할 경우, 정상 작동에서는 멈춤 동작 없이 1회 동작으로 밸브의 완전 개방이 이루어지며, 수격 방지 기능에서는 다음과 같은 단계별 작동을 통한 밸브 전단과 후단 사이의 차압 분산에 따른 밸브 개방으로, 유로 압력 상승 또는 캐비테이션 등으로 인한 기포 붕괴 등에 따른 수격 현상에 의한 밸브 및 배관의 파손을 방지할 수 있다.For example, when the time required to operate the rotary radius of the actuator 140 is set to 90 seconds, the valve is completely opened in one operation without stopping in normal operation. By opening the valve according to the differential pressure distribution between the front and rear ends of the valve through the operation, it is possible to prevent damage to the valve and the pipe due to the water hammer phenomenon due to bubble collapse due to the flow path pressure rise or cavitation.
a. 측정값 > 기준값 a. Measure> Reference
: 동작 사이클 - 동작(약 10도 회전, 10초 소요) -> 정지(5초 소요) -> 동작(10도 회전, 10초 소요)    : Operation cycle-Operation (rotate about 10 degrees, takes 10 seconds)-> Stop (takes 5 seconds)-> Act (rotates 10 degrees, takes 10 seconds)
b. 측정값 >> 기준값b. Measured Value >> Reference Value
: 동작 사이클 - 동작(약 5도 회전, 5초 소요) -> 정지(10초 소요) -> 동작(5도 회전, 5초 소요)   : Operation cycle-Operation (rotate about 5 degrees, takes 5 seconds)-> Stop (takes 10 seconds)-> Act (rotates 5 degrees, takes 5 seconds)
한편, 도 4 및 도 5는 본 발명의 실시예에 따른 고장진단부의 단면도이며, 본 발명의 제2 실시예는 상기 액추에이터의 수격 방지 기능을 위한 상시 점검을 위하여 외부 사용자의 시험 명령 입력 시 파샬스트록 기반의 시험을 실시하여, 사용자 또는 제조자 설정에 따라 회전반경 5도 이하의 미세 동작 시험을 진행한다.4 and 5 are cross-sectional views of the fault diagnosis unit according to an embodiment of the present invention, and a second embodiment of the present invention is a partial stroke when a test command is input by an external user for a constant check for the water hammer prevention function of the actuator. Based on the test, the micro-movement test with a rotation radius of 5 degrees or less is performed according to the user or manufacturer's setting.
또한, 동작 시험에 대한 시간 측정 시 목표 시간 초과 시 유압펌프제어부(130)의 유압펌프측정부(131), 고장진단부(120)의 액추에이터 측정부(121)에서의 압력 및 토크 측정값과 기준값과의 비교 분석을 통한 예상 고장부 진단에 따라 외부 사용자에게 시간 초과 신호와 함께 고장부 점검 메시지를 전달한다. In addition, the pressure and torque measurement value and the reference value in the hydraulic pump measuring unit 131 of the hydraulic pump control unit 130 and the actuator measuring unit 121 of the failure diagnosis unit 120 when the target time is exceeded when measuring the time for the operation test. According to the predicted fault diagnosis through the comparative analysis, the fault check message is delivered to the external user with the timeout signal.
또한, 상기 시험에 대한 액추에이터 상태 데이터를 자동 저장하여 액추에이터의 고장 이력 관리가 이루어짐으로써, 전기유압식 액추에이터 시스템 및 배관 시스템에 대한 사용 안정성을 확보할 수 있다.In addition, the failure history management of the actuator is made by automatically storing the actuator state data for the test, it is possible to ensure the use stability for the electro-hydraulic actuator system and piping system.
이상 본 발명을 구체적인 실시예를 통하여 상세히 설명하였으나, 이는 본 발명을 구체적으로 설명하기 위한 것으로, 본 발명은 이에 한정되지 않으며, 본 발명의 기술적 사상 내에서 당 분야의 통상의 지식을 가진 자에 의해 그 변형이나 개량이 가능함이 명백하다.Although the present invention has been described in detail through specific examples, it is intended to describe the present invention in detail, and the present invention is not limited thereto, and should be understood by those skilled in the art within the technical spirit of the present invention. It is obvious that modifications and improvements are possible.
본 발명의 단순한 변형 내지 변경은 모두 본 발명의 범주에 속하는 것으로 본 발명의 구체적인 보호 범위는 첨부된 특허청구범위에 의해 명확해질 것이다.Simple modifications and variations of the present invention are all within the scope of the present invention, and the specific scope of protection of the present invention will be apparent from the appended claims.
[부호의 설명] [Description of the code]
100 : 자동수격방지 기능의 전기유압식 밸브 액추에이터 시스템 100: electrohydraulic valve actuator system with automatic water hammer
110 : 네트워크 제어부 120 : 고장진단부110: network control unit 120: fault diagnosis unit
121 : 액추에이터 측정부 122 : 엔코더부121: actuator measuring section 122: encoder section
123 : 파워보드 124 : 제어보드123: power board 124: control board
125 : 기어부 130 : 유압펌프제어부125: gear unit 130: hydraulic pump control unit
131 유압모터 132 : 유압펌프 측정부131 hydraulic motor 132: hydraulic pump measuring unit
133 : 유압펌프 140 : 전기유압식 액추에이터133: hydraulic pump 140: electro-hydraulic actuator
141 : 유압실린더141: hydraulic cylinder

Claims (6)

  1. 자동수격방지 기능을 가지는 전기유압식 밸브 액추에이터 시스템에 있어서,In the electrohydraulic valve actuator system having an automatic water hammer,
    원거리에서 액추에이터의 동작 상황에 대한 데이터 신호 및 동작 제어 신호를 송수신하는 네트워크 제어부; 와,A network controller which transmits and receives a data signal and an operation control signal for an operation state of an actuator at a long distance; Wow,
    상기 네트워크 제어부에 의한 동작 명령에 따른 액추에이터의 동작 제어 및 액추에이터 내부 센서를 통한 액추에이터 동작 상황(압력, 토크, 동작 위치 등)을 내장된 제어모듈을 이용하여 수격 발생 유무를 판단하는 고장진단부; 와, A failure diagnosis unit for determining whether the water hammer is generated by using the built-in control module to control the actuator operation according to the operation command by the network controller and the actuator operation state (pressure, torque, operating position, etc.) through the actuator internal sensor; Wow,
    상기 고장진단부에 의한 수격 발생 판단에 따른 액추에이터의 동작 제어를 위한 유압펌프제어부; 를 포함하는 자동수격방지 기능을 가지는 전기유압식 밸브 액추에이터 시스템.A hydraulic pump control unit for controlling the operation of the actuator according to the water hammer occurrence determination by the fault diagnosis unit; Electro-hydraulic valve actuator system having an automatic water hammer prevention function including a.
  2. 제1항에 있어서,The method of claim 1,
    상기 네트워크 제어부는,The network control unit,
    MODBUS 또는 PROFIBUS 지원에 따른 필드버스 네트워크 시스템으로 다수의 액추에이터에 대한 네트워크 제어와 함께 터치스크린 방식의 LED display 적용에 의한 직관적인 액추에이터 동작 상황 파악이 가능한 것을 특징으로 하는 자동수격방지 기능을 가지는 전기유압식 밸브 액추에이터 시스템.Fieldbus network system with MODBUS or PROFIBUS support for electric actuators with automatic water hammer prevention function characterized by intuitive actuator operation status by applying touch screen type LED display as well as network control of multiple actuators Actuator system.
  3. 제1항에 있어서,The method of claim 1,
    상기 고장진단부는,The fault diagnosis unit,
    상기 네트워크 제어부에 의한 동작 명령 수신에 따른 액추에이터 동작 제어를 담당하며, 사용자 설정 또는 제조사 설정에 의한 정상 범위의 액추에이터 동작 기준값 범위(압력, 토크, 동작위치 등)을 저장하는 것을 특징으로 하는 자동수격방지 기능을 가지는 전기유압식 밸브 액추에이터 시스템.It is responsible for controlling the actuator operation according to the operation command received by the network control unit, automatic water hammer prevention, characterized in that for storing the actuator operating reference value range (pressure, torque, operating position, etc.) of the normal range by the user setting or manufacturer setting Electro-hydraulic valve actuator system with function.
  4. 제3항에 있어서,The method of claim 3,
    상기 고장진단부는,The fault diagnosis unit,
    액추에이터 동작 시 액추에이터 내부 센서에 의한 압력, 토크, 동작 위치 신호를 수렴하여, 액추에이터 동작 시 발생되는 압력, 토크, 동작 위치 등에 대한 상기 기준값 범위와 비교 분석하여, 기준값을 초과하는 압력, 토크가 발생될 경우, 수격 발생 신호를 상기 네트워크 제어부로 전송하고, 수격 발생에 따른 동작 제어 신호입력을 통한 액추에이터의 단계별 동작에 따른 수격 방지를 특징으로 하는 자동수격방지 기능을 가지는 전기유압식 밸브 액추에이터 시스템.When the actuator is operated, the pressure, torque, and operation position signals by the actuator internal sensor are converged and compared and analyzed with the reference ranges for the pressure, torque, and operating position generated during the actuator operation, so that pressure and torque exceeding the reference value may be generated. In case, the electro-hydraulic valve actuator system having an automatic water hammer prevention function, characterized in that the transmission of the water hammer generation signal to the network control unit, the water hammer prevention according to the step-by-step operation of the actuator through the operation control signal input according to the water hammer occurrence.
  5. 제3항에 있어서,The method of claim 3,
    상기 고장진단부는,The fault diagnosis unit,
    액추에이터 동작 시 상기 기준값 범위 미달 시 액추에이터 내부 모듈에 대한 고장 발생 신호를 상기 네트워크 제어부로 전송하고, 고장 발생부를 판단하는 것을 특징으로 하는 자동수격방지 기능을 가지는 전기유압식 밸브 액추에이터 시스템.The actuator of the electrohydraulic valve actuator having an automatic water hammering prevention function, characterized in that for transmitting the failure signal for the actuator internal module to the network control unit when the actuator is not within the reference value range.
  6. 제5항에 있어서,The method of claim 5,
    상기 액추에이터의 동작에 대한 상시 점검을 위하여, 상기 네트워크 제어부를 통한 사용자의 신호 입력에 따른 동작 위치 대비 소요 시간에 대한 파샬스트로크 시험에 의한 고장 발생 유무 확인 및 데이터 저장을 특징으로 하는 자동수격방지 기능을 가지는 전기유압식 밸브 액추에이터 시스템.In order to constantly check the operation of the actuator, the automatic water hammer prevention function characterized in that the failure occurred by the partial stroke test for the time required compared to the operation position according to the user's signal input through the network control unit and data storage With electrohydraulic valve actuator system.
PCT/KR2017/010530 2016-10-20 2017-09-25 Electro-hydraulic valve actuator system having automatic water hammer prevention function WO2018074753A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090222233A1 (en) * 2008-02-28 2009-09-03 Tareg Nasser Al-Buaijan Partial stroke testing system coupled with fuel control valve
KR101300419B1 (en) * 2011-09-09 2013-08-26 엘에스산전 주식회사 Control apparatus for hydraulic system
KR101470310B1 (en) * 2014-07-07 2014-12-09 주식회사 프로세이브 Valve Operation System for preventing water hammer
KR101551205B1 (en) * 2013-12-11 2015-09-09 (주)에너토크 Actuator
KR101589127B1 (en) * 2015-04-29 2016-02-18 한국수자원공사 Check valve opening and closing characteristics monitoring and diagnosing devices

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4542819B2 (en) * 2004-05-21 2010-09-15 株式会社小松製作所 Hydraulic machine, system and method for monitoring the health status of a hydraulic machine
KR20120012299A (en) * 2010-07-30 2012-02-09 주식회사 평강특장자동차 Temperature controller for hydraulic system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090222233A1 (en) * 2008-02-28 2009-09-03 Tareg Nasser Al-Buaijan Partial stroke testing system coupled with fuel control valve
KR101300419B1 (en) * 2011-09-09 2013-08-26 엘에스산전 주식회사 Control apparatus for hydraulic system
KR101551205B1 (en) * 2013-12-11 2015-09-09 (주)에너토크 Actuator
KR101470310B1 (en) * 2014-07-07 2014-12-09 주식회사 프로세이브 Valve Operation System for preventing water hammer
KR101589127B1 (en) * 2015-04-29 2016-02-18 한국수자원공사 Check valve opening and closing characteristics monitoring and diagnosing devices

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