KR100938650B1 - Hydraulic control sytem for actuating the valve - Google Patents

Hydraulic control sytem for actuating the valve Download PDF

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Publication number
KR100938650B1
KR100938650B1 KR1020090071932A KR20090071932A KR100938650B1 KR 100938650 B1 KR100938650 B1 KR 100938650B1 KR 1020090071932 A KR1020090071932 A KR 1020090071932A KR 20090071932 A KR20090071932 A KR 20090071932A KR 100938650 B1 KR100938650 B1 KR 100938650B1
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South Korea
Prior art keywords
valve
opening
drive cylinder
supply
passage
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KR1020090071932A
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Korean (ko)
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송석동
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(주)유일글로비스
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Priority to KR1020090071932A priority Critical patent/KR100938650B1/en
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    • 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
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/221—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves specially adapted operating means therefor
    • 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
    • F16K15/00—Check valves
    • F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
    • 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
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing
    • 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0647—Spindles or actuating means
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/06—Control of flow characterised by the use of electric means

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

PURPOSE: A hydraulic control system of a hydraulic driving valve is provided to make the installation convenient and to save manufacturing cost. CONSTITUTION: A hydraulic control system of a hydraulic driving valve comprises a drive cylinder(3), a first flow path(11), a second fluid path(12), a first opening/closing valve(53), a supply flow path(13), a supply pump and a hydraulic tank(52). The drive cylinder drives the valve body of the hydraulic driving valve. The first flow path is connected with a first port(3a) of the drive cylinder. The second fluid path has is connected with a second port(3b) of the drive cylinder. The first opening/closing valve is installed on the first flow path. The supply flow path is installed between the first port of the drive cylinder and the first opening/closing valve. The supply pump is installed on the supply flow path. The hydraulic tank is connected with the supply flow path.

Description

유압구동식 밸브의 유압제어시스템{HYDRAULIC CONTROL SYTEM FOR ACTUATING THE VALVE} HYDRAULIC CONTROL SYTEM FOR ACTUATING THE VALVE}

본 발명은 상하수도용 배관 또는 펌프장 등에 이용되는 완폐식밸브, 버터플라이밸브, 볼밸브, 세그먼트 볼밸브 등과 같은 유압구동식 밸브에 관한 것으로, 보다 상세하게는 정전 등과 같은 긴급상황 발생시에 유압구동식 밸브의 보다 신속한 폐쇄작동을 구현할 수 있는 유압구동식 밸브의 유압제어시스템에 관한 것이다. The present invention relates to hydraulically actuated valves such as closed valves, butterfly valves, ball valves, segment ball valves, etc., which are used for water and sewage pipes or pump stations, and more particularly, hydraulically actuated valves in case of emergency such as power failure. It relates to a hydraulic control system of a hydraulically actuated valve that can implement a faster closing operation of.

일반적으로, 상하수도용 배관 또는 펌프장의 펌프 토출구에는 버터플라이밸브, 완폐식 밸브, 볼밸브, 세그먼트 볼밸브 등과 같은 유압구동식 밸브가 설치되고, 이러한 유압구동식 밸브는 유압에 의해 그 개폐가 이루어짐에 따라 유체의 이송을 조절한다. In general, hydraulically operated valves such as butterfly valves, closed valves, ball valves, and segment ball valves are installed at pump discharge ports of water and sewage pipes or pump stations, and these hydraulically operated valves are opened and closed by hydraulic pressure. Accordingly to regulate the transport of fluid.

이러한 유압구동식 밸브는 밸브 본체, 밸브 본체 내에서 밸브축에 의해 회전가능하게 설치된 밸브체, 밸브축의 적어도 하나의 일단에 링크기구 또는 기어전동기구가 연결되어 밸브축을 회전구동시키는 구동실린더, 밸브축에 연결되어 밸브체를 자중에 의해 폐쇄시키는 웨이트, 구동실린더를 구동시키는 유압제어시스템 등을 구비한다. Such a hydraulically actuated valve includes a valve body, a valve body rotatably installed by a valve shaft in the valve body, a drive cylinder for rotating the valve shaft by connecting a link mechanism or a gear transmission mechanism to at least one end of the valve shaft, the valve shaft. And a hydraulic control system for driving the drive cylinder, the weight being connected to the valve body to close the valve body by its own weight.

유압제어시스템은 구동실린더에 압유를 선택적으로 공급함으로써 밸브축을 정방향 또는 역방향으로 회동시킴으로써 밸브의 개폐작동을 구현하고, 또한 정전 등과 같은 비상사태 발생시에 유압제어시스템에 의해 밸브체가 자동으로 폐쇄되도록 구성되어 있다. The hydraulic control system is configured to realize opening and closing operation of the valve by selectively supplying pressure oil to the drive cylinder to rotate the valve shaft in the forward or reverse direction, and also to close the valve body automatically by the hydraulic control system in case of an emergency such as a power failure. have.

이러한 유압구동식 밸브의 유압제어시스템은 컴팩트한 유압회로의 구성이 요구되고, 밸브의 완전 개방작동이 신속하고 간편하게 이루어져야 한다. The hydraulic control system of such a hydraulically actuated valve requires the construction of a compact hydraulic circuit, and the full opening operation of the valve must be made quickly and easily.

특히, 상하수도용 배관 또는 펌프장의 펌프 토출구에 설치된 유압구동식 밸브는 정전 등과 같은 긴급 사태 발생 시에 펌프의 펌핑력이 차단됨에 따라 역류가 발생하고, 이러한 역류에 의해 밸브에 수충격이 작용하여 펌프가 손상될 위험이 매우 크다. 이에 유압구동식 밸브의 유압제어시스템은 정전 등과 같은 긴급 상황 발생 시에는 밸브의 긴급 폐쇄작동을 매우 신속하게 하도록 구성되어야 한다. In particular, the hydraulically actuated valve installed at the pump discharge port of the water supply and sewage pipe or the pumping station has a reverse flow as the pumping force of the pump is cut off in case of an emergency such as a power failure, and the water flow acts on the valve by the reverse flow. Is very dangerous. Therefore, the hydraulic control system of the hydraulically actuated valve should be configured to make the emergency closing operation of the valve very quickly in case of emergency such as power failure.

본 발명은 상기와 같은 점을 감안하여 안출한 것으로, 컴팩트한 유압회로를 적용함에 따라 그 설치가 매우 간편하고, 제조비용의 절감을 도모할 수 있는 유압구동식 밸브의 유압제어시스템을 제공하는 데 그 목적이 있다. The present invention has been made in view of the above, and by providing a compact hydraulic circuit, the installation is very simple, and to provide a hydraulic control system of a hydraulically actuated valve that can reduce the manufacturing cost. The purpose is.

또한, 본 발명은 밸브의 완전 개방작동을 용이하게 도모함으로써 밸브의 전후단 압력차이에 의한 수두손실을 최소화할 수 있고, 이에 따라 밸브체의 진동 내지 떨림 현상을 방지할 수 있는 유압구동식 밸브의 유압제어시스템을 제공하는 데 그 목적이 있다. In addition, the present invention can minimize the head loss due to the pressure difference between the front and rear end of the valve by facilitating the full opening operation of the valve, and accordingly of the hydraulically operated valve that can prevent the vibration or shaking of the valve body The purpose is to provide a hydraulic control system.

특히, 본 발명은 정전 등과 같은 긴급사태 발생 시에 밸브체의 폐쇄작동을 매우 신속하게 진행시킴으로써 밸브체 내지 펌프의 손상을 방지할 수 있는 유압구동식 밸브의 유압제어시스템을 제공하는 데 그 목적이 있다. In particular, an object of the present invention is to provide a hydraulic control system of a hydraulically actuated valve which can prevent damage to the valve body or the pump by proceeding the closing operation of the valve body very quickly in case of an emergency such as a power failure. have.

상기와 같은 목적을 달성하기 위한 본 발명의 실시예들은 다음과 같다. Embodiments of the present invention for achieving the above object are as follows.

본 발명의 일 실시예에 따른 유압구동식 밸브용 유압제어시스템은, Hydraulic control system for a hydraulically actuated valve according to an embodiment of the present invention,

유압구동식 밸브의 밸브체를 구동시키고, 제1 및 제2 포트를 가지며, 탄성부재에 의해 편향력을 받는 피스톤을 가진 구동실린더;A drive cylinder for driving the valve body of the hydraulically actuated valve, the drive cylinder having first and second ports, the piston being biased by the elastic member;

상기 구동실린더의 제1포트와 소통하는 제1유로; A first flow passage communicating with a first port of the drive cylinder;

상기 구동실린더의 제2포트와 소통하는 제2유로; A second flow passage communicating with a second port of the drive cylinder;

상기 제1유로 상에 설치되고, 평시개방(normal opened)의 전자제어밸브로 구성된 제1개폐밸브;A first opening / closing valve installed on the first flow passage and configured of a normally opened electronic control valve;

상기 제1유로 상의 제1개폐밸브와 구동실린더의 제1포트 사이에서 합류하는 공급유로;A supply passage joining between the first opening / closing valve on the first passage and the first port of the driving cylinder;

상기 공급유로 상에 설치된 공급펌프;A supply pump installed on the supply channel;

상기 공급유로와 소통하고, 압유가 충전된 압유탱크;A pressure oil tank in communication with the supply flow path and filled with pressure oil;

상기 공급유로 상에 설치되고, 평시폐쇄(normal closed)의 전자제어밸브로 구성된 제2개폐밸브; 및 A second opening / closing valve installed on the supply passage and configured of a normally closed electronic control valve; And

상기 공급유로 상에 설치되고, 상기 제2개폐밸브 하류측에 위치한 체크밸브;를 포함한다. And a check valve installed on the supply passage and positioned downstream of the second opening / closing valve.

상기 제1 및 제2유로에는 보조탱크가 소통되게 연결되고, 상기 보조탱크는 상기 구동실린더의 상부에 위치하며, 상기 보조탱크 및 압유탱크는 소통관을 통해 소통하는 것을 특징으로 한다. An auxiliary tank is communicatively connected to the first and second flow paths, and the auxiliary tank is positioned above the driving cylinder, and the auxiliary tank and the hydraulic oil tank communicate with each other through a communication pipe.

이상과 같은 본 발명에 의하면, 수두 손실을 저감시킬 수 있고, 밸브체의 진동 내지 떨림현상을 방지할 수 있으며, 또한 유압구동식 밸브의 안정적인 작동성 및 효율성을 증대시켜 밸브의 수명을 연장할 수 있는 장점이 있다. According to the present invention as described above, it is possible to reduce head loss, to prevent vibration or vibration of the valve body, and to increase the stable operability and efficiency of the hydraulically actuated valve to extend the life of the valve. There is an advantage.

또한, 본 발명은 밸브체의 신속한 폐쇄작동을 구현함에 따라 펌프에 인가되는 부하를 해소할 수 있고, 또한 펌프의 수명을 연장할 수 있는 장점이 있다. In addition, the present invention can solve the load applied to the pump by implementing a quick closing operation of the valve body, there is an advantage that can extend the life of the pump.

그리고, 본 발명은 유압구동식 밸브의 원활한 개폐작동을 구현함에 따라 양정에 따른 펌프의 효율을 향상시켜 비용절감을 도모할 수 있는 장점이 있다. In addition, the present invention has the advantage of improving the efficiency of the pump according to the lift by implementing a smooth opening and closing operation of the hydraulically driven valve to reduce the cost.

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명한다. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1 및 도 2는 본 발명에 의한 유압제어시스템이 적용되는 유압구동식 밸브의 일 형태를 예시하고 있다. 예시된 바와 같이, 유압구동식 밸브는 밸브 본체(1), 밸브 본체 내에서 밸브축(2a)에 의해 회전가능하게 설치된 밸브체(2), 밸브축(2a)의 적어도 하나의 일단에 링크기구 또는 기어전동기구 연결되어 밸브축(2a)을 회전구동시키는 구동실린더(3), 밸브축(2a)에 연결되어 밸브체(2)를 자중에 의해 폐쇄시키는 웨이트(4, 또는 이에 대응하는 어큐뮬레이터), 구동실린더(3)를 구동시키는 유압제어시스템 등을 구비한다. 한편, 밸브체(2)는 도 1에서는 디스크 형태가 예시되어 있지만, 그외에도 유압구동식 밸브의 구조에 따라 볼, 세그먼트, 플러그 형태 등과 같이 다양하게 이루어진다. 1 and 2 illustrate one embodiment of a hydraulically actuated valve to which the hydraulic control system according to the present invention is applied. As illustrated, the hydraulically actuated valve has a link mechanism at at least one end of the valve body 1, the valve body 2 rotatably provided by the valve shaft 2a in the valve body 2, and the valve shaft 2a. Or a drive cylinder 3 connected to the gear drive mechanism to rotate the valve shaft 2a, a weight 4 connected to the valve shaft 2a to close the valve body 2 by its own weight, or an accumulator corresponding thereto. And a hydraulic control system for driving the drive cylinder 3. On the other hand, the valve body 2 is illustrated in FIG. 1 in the form of a disk, but in addition to the structure of the hydraulically actuated valve is made in a variety of forms, such as ball, segment, plug.

본 발명에 의한 유압제어시스템은 구동실린더(3)에 압유를 선택적으로 공급함으로써 밸브축(2a)을 정방향 또는 역방향으로 회동시킨다. 또한, 유압제어시스템은 정전 등과 같은 비상사태 발생시에 웨이트(4) 또는 어큐뮬레이터 등을 통해 밸브체(2)를 자동으로 폐쇄시킬 수 있도록 구성된다.The hydraulic control system according to the present invention rotates the valve shaft 2a in the forward or reverse direction by selectively supplying the hydraulic oil to the drive cylinder 3. In addition, the hydraulic control system is configured to automatically close the valve body 2 through the weight 4 or the accumulator in the event of an emergency such as a power failure.

도 3 내지 도 5는 본 발명의 일 실시예에 따른 유압제어시스템을 도시한다. 도시된 바와 같이, 본 발명의 유압제어시스템은 유압구동식 밸브의 밸브체(2)를 구동시키는 구동실린더(3) 및 구동실린더(3)의 작동을 제어하는 제1 및 제2 개폐밸브(53, 54)를 포함한다. 3 to 5 show a hydraulic control system according to an embodiment of the present invention. As shown, the hydraulic control system of the present invention is the first and second on-off valve 53 for controlling the operation of the drive cylinder (3) for driving the valve body (2) of the hydraulically actuated valve and the drive cylinder (3). , 54).

구동실린더(3)는 제1 및 제2 포트(3a, 3b)를 가지고, 제1 및 제2 포트(3a, 3b)로 유입 또는 유출되는 압유에 의해 피스톤(3d)은 전후진하도록 구성된다. 한편, 구동실린더(3)의 피스톤(3d)은 밸브체(2)의 폐쇄방향으로 탄성부재(5)의 탄성력을 부여받아 편향되도록 구성된다. The drive cylinder 3 has first and second ports 3a and 3b, and is configured such that the piston 3d moves forward and backward by the hydraulic oil flowing in or out of the first and second ports 3a and 3b. On the other hand, the piston 3d of the drive cylinder 3 is configured to be deflected by the elastic force of the elastic member 5 in the closing direction of the valve body 2.

구동실린더(3)의 제1포트(3a)에는 제1유로(11)가 접속되고, 구동실린더(3)의 제2포트(3b)에는 제2유로(12)가 접속된다. 제1유로(11)와 제2유로(12)는 합류지점(59)에서 서로 연결되고, 제1유로(11) 및 제2유로(12)의 합류지점(59)에는 보조탱크(51)가 소통되게 연결되며, 보조탱크(51)에는 압유가 충전될 수 있다. The first passage 11 is connected to the first port 3a of the drive cylinder 3, and the second passage 12 is connected to the second port 3b of the drive cylinder 3. The first flow passage 11 and the second flow passage 12 are connected to each other at the confluence point 59, and the auxiliary tank 51 is connected to the confluence point 59 of the first flow passage 11 and the second flow passage 12. Is connected in communication, the auxiliary tank 51 may be filled with the pressure oil.

제1유로(11)의 일측지점(13a)에서 공급유로(13)가 합류하고, 이 공급유로(13)는 압유탱크(52)가 소통하며, 압유탱크(52)에는 압유가 충전되어 있다. The supply flow passage 13 joins at one side point 13a of the first flow passage 11, and the supply flow passage 13 communicates with the pressure oil tank 52, and the pressure oil tank 52 is filled with pressure oil.

공급유로(13) 상에는 공급펌프(64)가 설치되고, 공급펌프(64)는 압유탱크(52) 내의 압유를 공급유로(13) 상으로 공급하도록 구성된다. A supply pump 64 is provided on the supply passage 13, and the supply pump 64 is configured to supply the pressure oil in the pressure oil tank 52 onto the supply passage 13.

제1유로(11)에는 제1개폐밸브(53)가 설치되고, 이 제1개폐밸브(53)의 개폐작동에 의해 제1유로(11)가 개폐된다. 제1개폐밸브(53)는 평시 개방구조(normal opened)의 전자제어밸브로 구성되어 전원이 오프되면 개방되고, 전원이 온되면 폐쇄된다. A first opening / closing valve 53 is provided in the first passage 11, and the first passage 11 is opened and closed by the opening and closing operation of the first opening / closing valve 53. The first opening / closing valve 53 is configured as an electronically controlled valve having a normally opened structure and is opened when the power is turned off, and closed when the power is turned on.

특히, 공급유로(13)는 제1개폐밸브(53)와 구동실린더(3)의 제1포트(3a) 사이의 합류지점(13a)에서 제1유로(11)와 합류한다. In particular, the supply passage 13 joins the first passage 11 at the joining point 13a between the first opening / closing valve 53 and the first port 3a of the drive cylinder 3.

공급유로(13)에는 제2개폐밸브(54)가 설치되고, 제2개폐밸브(54)의 개폐작동에 의해 공급유로(13)가 개폐된다. 제2개폐밸브(54)는 평시 폐쇄 구조(normal closed)의 전자제어밸브로 구성되어 전원이 오프되면 폐쇄되고, 전원이 온되면 개방된다. The supply passage 13 is provided with a second opening and closing valve 54, and the supply passage 13 is opened and closed by the opening and closing operation of the second opening and closing valve 54. The second opening / closing valve 54 is composed of a normally closed electronic control valve, which is closed when the power is turned off, and is opened when the power is turned on.

그리고, 공급유로(13) 상의 제2개폐밸브(54) 하류에는 체크밸브(65)가 설치되고, 체크밸브(65)는 제1유로(11)측으로의 흐름은 허용하고, 그 역방향으로의 흐름은 차단하도록 구성된다. A check valve 65 is provided downstream of the second opening / closing valve 54 on the supply passage 13, and the check valve 65 allows the flow to the first passage 11 side and flows in the reverse direction. Is configured to block.

바람직하게는, 공급펌프(14) 및 제2개폐밸브(24) 사이에는 릴리프 밸브(55)가 설치되고, 릴리프 밸브(55)에 의해 회로 내의 압력이 설정치로 일정하게 유지될 수 있다. Preferably, a relief valve 55 is provided between the supply pump 14 and the second opening / closing valve 24, and the pressure in the circuit can be kept constant at the set value by the relief valve 55.

또한, 보조탱크(51)는 구동실린더(3) 및 압유탱크(52)의 상부에 위치하고, 보조탱크(51) 및 압유탱크(52)는 소통관(58)을 통해 상호 소통되며, 이에 의해 보조탱크(51)의 압유가 중력이송방식으로 압유탱크(52) 내에 보충된다. In addition, the auxiliary tank 51 is located above the drive cylinder 3 and the hydraulic oil tank 52, the auxiliary tank 51 and the hydraulic oil tank 52 are mutually communicated through the communication pipe 58, thereby assisting The hydraulic oil of the tank 51 is replenished in the hydraulic oil tank 52 by the gravity feed method.

한편, 제1 및 제2 개폐밸브(53, 54)는 그 밸브체가 포펫, 스풀, 슬리브 등으로 구성된 다양한 구조의 2웨이 밸브가 적용가능할 것이다. On the other hand, the first and second on-off valves 53 and 54 may be applicable to a two-way valve of various structures, the valve body is composed of a poppet, spool, sleeve and the like.

이상과 같이 구성된 본 발명의 작동관계를 다음과 같이 상세히 설명한다. The operating relationship of the present invention configured as described above will be described in detail as follows.

유압구동식 밸브의 디스크(2)가 수압에 의해 대략 40% 정도로 일부 개방된 상태에서, 본 발명의 유압제어시스템에 전원이 온되면 도 4와 같이 공급펌프(64)의 작동과 더불어, 평시개방구조(normal opened)의 제1개폐밸브(53)는 폐쇄되고, 평시폐쇄구조(normal closed)의 제2개폐밸브(54)는 개방된다. 이에, 압유탱크(52) 내의 압유가 공급펌프(64)에 의해 펌핑되어 공급유로(13) 및 체크밸브(65)를 거쳐 제1유로(11)로 공급된다. 이때 제1개폐밸브(53)는 폐쇄된 상태이므로 제1유로(11)를 통해 이송되는 압유는 구동실린더(3)의 제1포트(3a)로 유입되고, 구동실린더(3)의 제2포트(3b) 영역에 잔류하는 압유는 제2유로(12)를 통해 보조탱크(51)로 리턴된다. With the disc 2 of the hydraulically actuated valve partially opened by about 40% by hydraulic pressure, when the power is turned on to the hydraulic control system of the present invention, the supply pump 64 is operated as shown in FIG. The normally open first open / close valve 53 is closed, and the normally closed second open / close valve 54 is opened. Accordingly, the pressure oil in the oil pressure tank 52 is pumped by the supply pump 64 and supplied to the first channel 11 through the supply channel 13 and the check valve 65. At this time, since the first opening / closing valve 53 is closed, the pressurized oil conveyed through the first flow passage 11 flows into the first port 3a of the driving cylinder 3 and the second port of the driving cylinder 3. The pressure oil remaining in the area (3b) is returned to the auxiliary tank 51 through the second flow passage 12.

이와 같이, 구동실린더(3)의 제1포트(3a)로 압유가 공급되면 구동실린더(3) 내의 피스톤(3d)이 일방향(도 4에서 하부방향)으로 이동하고, 이러한 구동실린더(3)의 피스톤(3d) 이동에 따라 밸브체(2)의 밸브축(2a)이 정방향으로 회전하고, 이에 유압구동식 밸브의 밸브체(2)는 완전히 개방된다. In this way, when the hydraulic oil is supplied to the first port 3a of the drive cylinder 3, the piston 3d in the drive cylinder 3 moves in one direction (lower direction in FIG. 4). As the piston 3d moves, the valve shaft 2a of the valve body 2 rotates in the forward direction, whereby the valve body 2 of the hydraulically actuated valve is completely opened.

그런 다음, 유압구동식 밸브의 밸브체(2)를 폐쇄하고자 할 경우에는, 전원을 오프시키면 도 5와 같이 평시개방구조의 제1개폐밸브(53)는 개방되고, 평시폐쇄구조의 제2개폐밸브(54)는 폐쇄된다. 그리고, 유압구동식 밸브는 웨이트(4)의 자중에 의해 그 디스크가 폐쇄하는 방향으로 회전하고, 이에 대응하여 구동실린더(3)의 제1포트(3a) 영역에 잔류하는 압유는 압력차이에 의해 보조탱크(51)로 리턴된다. 이에 따라, 구동실린더(3)의 피스톤(3d)은 역방향(도 5의 상부방향)으로 이동하고, 이러한 구동실린더(3)의 피스톤(3d) 이동에 따라 밸브체(2)의 밸브축(2a)이 역방향으로 회전함으로써 유압구동식 밸브의 밸브체(2)는 폐쇄된다. Then, when the valve body 2 of the hydraulically actuated valve is to be closed, when the power is turned off, the first opening and closing valve 53 of the normally open structure is opened as shown in FIG. 5, and the second opening and closing of the normally closed structure is opened. The valve 54 is closed. The hydraulically actuated valve rotates in the direction in which the disk closes due to the weight of the weight 4, and correspondingly, the pressure oil remaining in the region of the first port 3a of the drive cylinder 3 is reduced by the pressure difference. Return to the auxiliary tank (51). Accordingly, the piston 3d of the drive cylinder 3 moves in the reverse direction (upward direction in FIG. 5), and the valve shaft 2a of the valve body 2 is moved in accordance with the movement of the piston 3d of the drive cylinder 3. ) Rotates in the reverse direction, the valve body 2 of the hydraulically actuated valve is closed.

특히, 본 발명에 따른 구동실린더(3)의 피스톤(3d)은 탄성부재(5)의 탄성력을 밸브체(2)의 폐쇄방향으로 받으므로 피스톤(3d)의 역방향 이동이 매우 신속하게 이루어진다. 이에 본 발명은 정전 등과 같은 긴급 상황 발생 시에도 밸브체(2)의 폐쇄시간을 대폭 단축함으로써 펌프장의 펌프 또는 유압구동식 밸브의 손상 등을 방지함과 더불어 펌프 내지 밸브의 내구성을 향상시킬 수 있는 장점이 있다. In particular, since the piston 3d of the drive cylinder 3 according to the present invention receives the elastic force of the elastic member 5 in the closing direction of the valve body 2, the reverse movement of the piston 3d is made very quickly. Accordingly, the present invention can significantly reduce the closing time of the valve body 2 in the event of an emergency such as a power failure, thereby preventing damage to a pump or a hydraulically actuated valve in a pumping station, and improving the durability of the pump or the valve. There is an advantage.

이상과 같은 본 발명은 수압에 의해 일부 개방되는 유압구동식 밸브를 완전 개방으로 유도함으로써 유체의 이송을 보다 원활하게 할 수 있다. The present invention as described above can facilitate the transfer of the fluid by inducing the hydraulically driven valve partially opened by the hydraulic pressure to the full opening.

또한, 본 발명은 전원의 오프에 의해, 제1 및 제2 개폐밸브(53, 54)의 절환작동이 자동으로 이루어짐으로써 그 제어로직, 제어회로 등이 매우 단순해질 수 있고, 이와 더불어 웨이트(4)의 자중에 의한 유압구동식 밸브의 폐쇄작동이 매우 간편하고 원활하게 진행될 수 있다. In addition, according to the present invention, since the switching operation of the first and second on-off valves 53 and 54 is automatically performed by turning off the power supply, the control logic, the control circuit, and the like can be made very simple. The closing operation of the hydraulically actuated valve by the self-weight of the can be proceeded very simply and smoothly.

도 1은 유압구동식 밸브의 일예를 도시한 정면도이다. 1 is a front view showing an example of a hydraulically actuated valve.

도 2는 유압구동식 밸브의 일예를 도시한 측면도이다. 2 is a side view showing an example of a hydraulically actuated valve.

도 3은 본 발명의 일 실시예에 따른 유압제어시스템을 도시한 구성도이다. 3 is a block diagram showing a hydraulic control system according to an embodiment of the present invention.

도 4는 본 발명의 일 실시예에 따른 유압제어시스템에 의한 밸브의 개방작동를 도시한 도면이다. 4 is a view showing the opening operation of the valve by the hydraulic control system according to an embodiment of the present invention.

도 5는 본 발명의 일 실시예에 따른 유압제어시스템에 의한 밸브의 긴급 폐쇄작동을 도시한 도면이다. 5 is a view showing an emergency closing operation of the valve by the hydraulic control system according to an embodiment of the present invention.

* 도면의 주요 부분에 대한 간단한 설명 *Brief description of the main parts of the drawing

1: 밸브 본체 2: 밸브체1: valve body 2: valve body

3: 구동실린더 4: 웨이트3: drive cylinder 4: weight

5: 탄성부재 11, 12 : 제1 및 제2 유로5: elastic member 11, 12: first and second flow paths

13: 공급유로 51: 보조탱크 13: supply path 51: auxiliary tank

53: 제1개폐밸브 54: 제2개폐밸브53: first open / close valve 54: second open / close valve

Claims (2)

유압구동식 밸브의 밸브체(2)를 구동시키고, 제1 및 제2 포트(3a, 3b)를 가지며, 제1 및 제2 포트(3a, 3b) 사이에서 전후진하는 피스톤(3d)을 가지며, 상기 피스톤(3d)은 탄성부재(5)에 의해 상기 밸브체(2)의 폐쇄방향으로 편향력을 받도록 구성되는 구동실린더(3);Has a piston 3d for driving the valve body 2 of the hydraulically actuated valve, having first and second ports 3a and 3b, and moving back and forth between the first and second ports 3a and 3b. The piston (3d) is a drive cylinder (3) configured to receive a biasing force in the closing direction of the valve body (2) by the elastic member (5); 상기 구동실린더(3)의 제1포트(3a)와 소통하는 제1유로(11); A first flow passage (11) communicating with the first port (3a) of the drive cylinder (3); 상기 구동실린더(3)의 제2포트(3b)와 소통하고, 상기 제1유로(11)에 합류지점(59)을 통해 직접 연결되는 제2유로(12); A second flow passage 12 in communication with the second port 3b of the driving cylinder 3 and directly connected to the first flow passage 11 through a joining point 59; 상기 제1유로(11) 상에 설치되고, 전원이 오프되면 개방되며, 전원이 온되면 폐쇄되는 평시개방(normal opened)의 전자제어밸브로 구성된 제1개폐밸브(53);A first opening / closing valve (53) installed on the first flow passage (11) and configured as a normally opened electronic control valve that is opened when the power is turned off and closed when the power is turned on; 상기 제1개폐밸브(53)와 구동실린더(3)의 제1포트(3a) 사이의 합류지점(13a)에서 상기 제1유로(11)와 합류하는 공급유로(13);A supply passage 13 which merges with the first passage 11 at a joining point 13a between the first opening / closing valve 53 and the first port 3a of the driving cylinder 3; 상기 공급유로(13) 상에 설치된 공급펌프(14);A supply pump 14 installed on the supply channel 13; 상기 공급유로(13)와 소통하고, 압유가 충전된 압유탱크(52);A pressure oil tank 52 in communication with the supply passage 13 and filled with pressure oil; 상기 공급유로(13) 상에 설치되고, 전원이 오프되면 폐쇄되며, 전원이 온되면 개방되는 평시폐쇄(normal closed)의 전자제어밸브로 구성된 제2개폐밸브(54); A second opening / closing valve (54) formed on the supply passage (13) and configured as a normally closed electronic control valve that is closed when the power is turned off and is opened when the power is turned on; 상기 공급유로(13) 상에 설치되고, 상기 제2개폐밸브(54)의 하류측에 위치한 체크밸브(65); 및A check valve (65) installed on the supply passage (13) and located downstream of the second opening / closing valve (54); And 상기 공급펌프(14) 및 제2개폐밸브(54) 사이에 설치되는 릴리프 밸브(55);를 포함하고, And a relief valve (55) installed between the supply pump (14) and the second open / close valve (54). 상기 제1 및 제2 유로(11, 12)의 합류지점(59)에는 보조탱크(51)가 소통되게 연결되고, 상기 보조탱크(51)는 상기 구동실린더(3) 및 압유탱크(52)의 상부에 위치하며, 상기 보조탱크(51) 및 압유탱크(52)는 소통관(58)을 통해 소통하고, 상기 보조탱크(51) 내의 압유가 상기 소통관(58)을 통해 중력이송방식으로 압유탱크(52) 내에 보충되는 것을 특징으로 하는 유압구동식 밸브의 유압제어시스템.Auxiliary tank 51 is connected to the confluence point 59 of the first and second flow paths 11 and 12 so that the auxiliary tank 51 is connected to the driving cylinder 3 and the hydraulic oil tank 52. Located in the upper portion, the auxiliary tank 51 and the hydraulic oil tank 52 communicates through the communication tube 58, the pressure oil in the auxiliary tank 51 is the hydraulic oil through the communication tube 58 by gravity transfer method Hydraulic control system of the hydraulically actuated valve, characterized in that the refill in the tank (52). 삭제delete
KR1020090071932A 2009-08-05 2009-08-05 Hydraulic control sytem for actuating the valve KR100938650B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107120465A (en) * 2017-06-23 2017-09-01 重庆阿卡雷科技有限公司 Gas circuit positive pressure protection system and single-acting operated pneumatic valve cylinder

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980054190A (en) * 1996-12-27 1998-09-25 박병재 Oil drainage device of power steering
KR200182633Y1 (en) 1999-12-11 2000-05-15 서광공작주식회사 Emergency closing apparatus for hydraulic butterfly valve
JP2001280304A (en) * 2000-03-31 2001-10-10 Shin Meiwa Ind Co Ltd Hydraulic control device for dump truck

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980054190A (en) * 1996-12-27 1998-09-25 박병재 Oil drainage device of power steering
KR200182633Y1 (en) 1999-12-11 2000-05-15 서광공작주식회사 Emergency closing apparatus for hydraulic butterfly valve
JP2001280304A (en) * 2000-03-31 2001-10-10 Shin Meiwa Ind Co Ltd Hydraulic control device for dump truck

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107120465A (en) * 2017-06-23 2017-09-01 重庆阿卡雷科技有限公司 Gas circuit positive pressure protection system and single-acting operated pneumatic valve cylinder
CN107120465B (en) * 2017-06-23 2019-03-05 重庆驭虹智能科技有限公司 Gas circuit positive pressure protection system and single-acting operated pneumatic valve cylinder

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