KR102216916B1 - Electro hydrostatic actuator for ship - Google Patents

Electro hydrostatic actuator for ship Download PDF

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Publication number
KR102216916B1
KR102216916B1 KR1020190105018A KR20190105018A KR102216916B1 KR 102216916 B1 KR102216916 B1 KR 102216916B1 KR 1020190105018 A KR1020190105018 A KR 1020190105018A KR 20190105018 A KR20190105018 A KR 20190105018A KR 102216916 B1 KR102216916 B1 KR 102216916B1
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South Korea
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flow path
passage
end part
cylinder
passages
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KR1020190105018A
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Korean (ko)
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문성호
김한공
장지성
지상원
최세령
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주식회사 케이브이엔텍
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
    • F01N3/222—Control of additional air supply only, e.g. using by-passes or variable air pump drives using electric valves only
    • 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/027—Installations or systems with accumulators having accumulator charging devices
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
    • 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
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/05—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a magnetic, e.g. electromagnetic, device other than a valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/02—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for marine vessels or naval applications
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

According to the present invention, provided is an electro-hydrostatic driving apparatus for a vessel. The electro-hydrostatic driving apparatus includes: a drive motor (11) generating power in accordance with a signal of a control part (12); a pump (21) connected to one end part of each of first and second flow paths (22, 23), and supplying fluids to the first flow path (22) or the second flow path (23) by the power delivered from the drive motor (11); a cylinder (31) having one side part connected to the other end part of the first flow path (22) and having the other side part connected to the other end part of the second flow path (23) to be operated in one direction or the other direction; a first safety valve (41) provided on a third flow path (42) connecting the first and second flow paths (22, 23), and a second safety valve (43) provided on a fourth flow path (44) spaced a predetermined distance apart from the third flow path (42) to connect the first and second flow paths (22, 23); and first solenoid valves (55) provided on a fifth flow path (51) spaced a predetermined distance apart from the fourth flow path (44) to connect the first and second flow paths (22, 23), a sixth flow path (52) having one end part connected to the fifth flow path (51) and having the other end part extended by a predetermined length, a seventh flow path (53) having one end part connected to the sixth flow path (52) and having the other end part connected to the second flow path (23), a pressure accumulator (54) connected to the other end part of the sixth flow path (52), and a second flow path (23) between the fifth flow path (51) and the seventh flow path (53), and a second solenoid valve (56) provided on the seventh flow path (53). Therefore, the present invention enables an apparatus to be operated by more perfectly handling an emergency.

Description

선박용 전기-정유압 구동장치{Electro hydrostatic actuator for ship}Electric-hydrostatic actuator for ship {Electro hydrostatic actuator for ship}

본 발명은 선박용 전기-정유압 구동장치에 관한 것으로, 더욱 구체적으로는 펌프로부터 공급되는 유체 중의 일부를 우회시켜 축압기에 저장한 다음, 정전 등으로 인해 구동모터가 작동하지 않는 비상상태가 발생하면, 축압기에 저장된 유체를 실린더로 공급할 수 있도록 구성함으로써, 종래에 비해 장치 자체를 소형화하면서도 비상상태에 보다 완벽하게 대처하여 장치를 운용할 수 있는 선박용 전기-정유압 구동장치에 관한 것이다.The present invention relates to an electric-static hydraulic driving device for a ship, and more specifically, when a part of the fluid supplied from the pump is bypassed and stored in an accumulator, and then an emergency state in which the driving motor is not operated due to a power outage occurs. , By configuring the fluid stored in the accumulator to be supplied to the cylinder, the device itself is miniaturized compared to the prior art, and yet more completely cope with the emergency state to operate the device.

근자 선박으로부터 배출되는 배기가스에 의한 환경오염 문제가 대두되면서 이를 처리하기 위한 다양한 기술들이 제안되고 있다. 일반적으로 선박에 있어 배기가스 처리장치는 질산화물(NOx) 및 황산화물(SOx) 저감을 위한 장치로 구분되는데, 특히 질산화물 저감을 위해서 배기가스 재순환장치(EGR) 및 선택적 환원촉매장치(SCR)가 주로 사용되고 있다.In recent years, as the problem of environmental pollution caused by exhaust gas discharged from ships has emerged, various technologies have been proposed to deal with it. In general, exhaust gas treatment systems in ships are classified into devices for reducing nitrogen oxides (NOx) and sulfur oxides (SOx).In particular, exhaust gas recirculation devices (EGR) and selective reduction catalysts (SCR) are mainly used to reduce nitrogen oxides. Is being used.

이러한 배기가스 재순환장치 및 선택적 환원촉매장치 각각은 선박의 엔진 및 그 후단에 설치되며, 재순환장치 및 선택적 환원촉매장치 각각을 통한 배기가스의 유동은 제어밸브에 의해 원격으로 제어된다. 이때, 배기가스 자체가 초고온 상태이기 때문에 제어밸브는 이러한 가혹한 운전조건에서도 정상적으로 작동될 필요가 있다.Each of the exhaust gas recirculation device and the selective reduction catalyst device is installed at the engine and its rear end of the ship, and the flow of exhaust gas through each of the recirculation device and the selective reduction catalyst device is remotely controlled by a control valve. At this time, since the exhaust gas itself is in an ultra-high temperature state, the control valve needs to be operated normally even under such severe operating conditions.

이를 위해 관련업계에서는 상대적으로 큰 설치 공간이 필요한 공기압 엑츄에이터를 대신하여, 별도의 유압밸브가 필요 없이 구동모터의 제어를 통해 실린더의 작동을 제어할 수 있는 전기-정유압 구동장치(electro hydrostatic actuator, EHA)에 대한 관심이 점차 고조되고 있다.To this end, in the related industry, instead of a pneumatic actuator that requires a relatively large installation space, an electro hydrostatic actuator that can control the operation of the cylinder through the control of the drive motor without the need for a separate hydraulic valve. The interest in EHA) is increasing.

통상적인 전기-정유압 구동장치는 도 2에 개시된 것과 같이, 구동모터(11) 및 펌프(21), 제1, 2안전밸브(42, 43) 및 제1, 2체크밸브(61, 63) 그리고 실린더(31)를 포함하여 이루어진다. 구동모터(11)의 작동은 제어부(12)에 의해 제어되며, 펌프(21)는 양방향로 작동하고, 실린더(31)에는 비상복귀스프링(32)이 마련된다.As disclosed in FIG. 2, a typical electric-static hydraulic drive device includes a drive motor 11 and a pump 21, first and second safety valves 42 and 43, and first and second check valves 61 and 63. And it comprises a cylinder (31). The operation of the driving motor 11 is controlled by the control unit 12, the pump 21 operates in both directions, and an emergency return spring 32 is provided in the cylinder 31.

이러한 구성을 통해, 구동모터(11)가 일방향 또는 타방향으로 작동하면, 펌프(21)가 구동모터(11)의 작동방향에 따라 제1유로(22) 또는 제2유로(23)로 유체를 공급하게 되고, 실린더(31)는 제1유로(22) 또는 제2유로(23)로 공급되는 유체에 의해 일방향 또는 타방향으로 작동하며 미도시된 밸브를 개폐하게 되는 것이다.Through this configuration, when the drive motor 11 operates in one direction or the other direction, the pump 21 transfers fluid to the first flow path 22 or the second flow path 23 according to the operating direction of the drive motor 11. The cylinder 31 is operated in one direction or the other direction by the fluid supplied to the first flow path 22 or the second flow path 23 and opens and closes a valve, not shown.

만일, 정전 등으로 인해 전기 공급이 중단되어 구동모터(11)가 작동하지 않으면, 비상복귀스프링(32)의 복원력에 의해 실린더(31)가 원위치로 복귀하면서 밸브가 폐쇄된다. 이때, 실린더(31)의 작동은 전적으로 비상복귀스프링(32)의 복원력에만 의존하기 때문에, 비상복귀스프링(32) 및 실린더(31)가 일정크기 이상으로 구성될 필요가 있으며 이로 인해 장치 자체가 거대해지는 문제가 있었다.If the drive motor 11 is not operated due to a power failure due to a power failure or the like, the valve is closed while the cylinder 31 returns to its original position by the restoring force of the emergency return spring 32. At this time, since the operation of the cylinder 31 entirely depends only on the restoring force of the emergency return spring 32, the emergency return spring 32 and the cylinder 31 need to be configured to be larger than a certain size, and thus the device itself is huge. There was a problem of losing.

대한민국 등록특허 제1694889호Republic of Korea Patent No. 1694889

본 발명은 이러한 종래 기술의 문제점을 개선하기 위해 제안된 것으로서, 본 발명의 목적은 비상 상태에 완벽하게 대처할 수 있으면서 장치 자체를 소형화하는 것이 가능한 선박용 전기-정유압 구동장치를 제공함에 있다.The present invention has been proposed in order to improve the problems of the prior art, and an object of the present invention is to provide an electrostatic hydraulic driving device for a ship capable of completely coping with an emergency condition and miniaturizing the device itself.

본 발명은 이러한 목적을 달성하기 위하여, 제어부(12)의 신호에 따라 동력을 생성하는 구동모터(11); 제1, 2유로(22, 23) 각각의 일단부위와 연결되며, 구동모터(11)로부터 전달되는 동력에 의해 제1유로(22) 또는 제2유로(23)로 유체를 공급하는 펌프(21); 일측부위는 제1유로(22)의 타단부위와 연결되고 타측부위는 제2유로(23)의 타단부위와 연결되어 일방향 또는 타방향으로 작동하는 실린더(31); 제1, 2유로(22, 23) 사이를 연결하는 제3유로(42) 상에 마련되는 제1안전밸브(41), 제3유로(42)와 일정간격 이격되어 제1, 2유로(22, 23) 사이를 연결하는 제4유로(44) 상에 마련되는 제2안전밸브(43); 제4유로(44)와 일정간격 이격되어 제1, 2유로(22, 23) 사이를 연결하는 제5유로(51), 일단부위는 제5유로(51)와 연결되고 타측부위는 일정길이 연장되는 제6유로(52), 일단부위는 제6유로(52)와 연결되고 타단부위는 제2유로(23)와 연결되는 제7유로(53), 제6유로(52)의 타단부위와 연결되는 축압기(54), 제5유로(51)와 제7유로(53) 사이의 제2유로(23) 상에 마련되는 제1솔레노이드밸브(55), 제7유로(53) 상에 마련되는 제2솔레노이드밸브(56);를 포함하여 이루어지는 기술적 특징이 있다.In order to achieve this object, the present invention comprises: a drive motor 11 for generating power according to a signal from the control unit 12; A pump 21 connected to one end of each of the first and second passages 22 and 23 and supplying fluid to the first passage 22 or the second passage 23 by the power transmitted from the drive motor 11 ); A cylinder 31 having one side connected to the other end of the first passage 22 and the other side connected with the other end of the second passage 23 to operate in one or the other direction; The first and second passages 22 are spaced apart from the first safety valve 41 and the third passage 42 provided on the third passage 42 connecting the first and second passages 22 and 23. , 23) a second safety valve 43 provided on the fourth flow path 44 connecting therebetween; The fifth passage 51 is spaced apart from the fourth passage 44 and connects the first and second passages 22, 23, and one end is connected to the fifth passage 51, and the other side is extended by a certain length. The 6th channel 52, one end is connected to the 6th channel 52, and the other end is connected to the other end of the 7th channel 53 and the 6th channel 52 which is connected to the 2nd channel 23 The accumulator 54, the first solenoid valve 55 provided on the second flow path 23 between the fifth flow path 51 and the seventh flow path 53, The second solenoid valve 56 has technical features including.

본 발명은 펌프로부터 공급되는 유체 중의 일부를 우회시켜 축압기에 저장한 다음, 정전 등으로 인해 구동모터가 작동하지 않는 비상상태가 발생하면, 축압기에 저장된 유체를 실린더로 공급할 수 있는 구성을 제안함으로써, 종래에 비해 장치 자체를 소형화하면서도 비상상태에 보다 완벽하게 대처하여 장치를 운용할 수 있도록 해준다.The present invention proposes a configuration capable of supplying the fluid stored in the accumulator to the cylinder when an emergency state in which the driving motor does not operate due to a power outage occurs after bypassing some of the fluid supplied from the pump and storing it in the accumulator. By doing so, the device itself is miniaturized compared to the prior art, and the device can be operated more completely in response to an emergency condition.

도 1은 본 발명에 따른 선박용 전기-정유압 구동장치의 개략적인 구성도.
도 2는 종래 선박용 전기-정유압 구동장치의 개략적인 구성도.1 is a schematic configuration diagram of a marine electric-static hydraulic drive device according to the present invention.
Figure 2 is a schematic configuration diagram of a conventional marine electric-static hydraulic drive device.

본 발명에 따른 바람직한 실시예를 첨부된 도면을 참조하여 상세하게 살펴보면 다음과 같은데, 본 발명의 실시예를 상술함에 있어 본 발명의 기술적 특징과 직접적인 관련성이 없거나, 또는 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자에게 자명한 사항에 대해서는 그 상세한 설명을 생략하기로 한다. A detailed look at the preferred embodiments according to the present invention with reference to the accompanying drawings is as follows. In the above description of the embodiments of the present invention, there is no direct relation to the technical features of the present invention, or in the technical field to which the present invention belongs. For matters that are self-evident to those with knowledge of, detailed explanations will be omitted.

도 1은 본 발명에 따른 선박용 전기-정유압 구동장치의 개략적인 구성도를 보여준다. 본 발명은 도면에 개시된 것과 같이, 구동모터(11), 펌프(21), 실린더(31), 제1, 2안전밸브(41, 43), 축압기(54) 그리고 제1, 2솔레노이드(55, 56)를 포함하여 이루어지는 기술적 특징이 있다. 이하 이들 각 구성을 구체적으로 살펴본다.1 shows a schematic configuration diagram of an electric-static hydraulic drive device for a ship according to the present invention. The present invention, as disclosed in the drawings, the drive motor 11, the pump 21, the cylinder 31, the first and second safety valves 41 and 43, the accumulator 54, and the first and second solenoids 55 , 56). Hereinafter, each of these components will be described in detail.

구동모터(11)는 동력을 생성하는 수단으로, 제어부(12)의 입력 신호에 따라 그 작동이 제어된다. 구동모터(11)는 서보모터로 이루어질 수 있으며, 제어부(12)의 신호에 따라 그 회전수가 결정된다. The drive motor 11 is a means for generating power, and its operation is controlled according to an input signal from the controller 12. The drive motor 11 may be made of a servo motor, and the number of rotations is determined according to a signal from the control unit 12.

펌프(21)는 유체를 펌핑하기 위한 수단으로, 제1, 2유로(22, 23) 각각의 일단부위와 연결되며, 구동모터(11)의 동력축과 축 연결된다. 구동모터(11)가 일방향으로 작동하면 유체를 제1유로(22)로 공급하고, 구동모터(11)가 타방향으로 작동하면 유체를 제2유로(23)로 공급한다.The pump 21 is a means for pumping a fluid, and is connected to one end of each of the first and second passages 22 and 23, and is axially connected to the power shaft of the drive motor 11. When the driving motor 11 operates in one direction, the fluid is supplied to the first flow path 22, and when the driving motor 11 operates in the other direction, the fluid is supplied to the second flow path 23.

이때, 펌프(21)에는 공급을 초과하는 유체를 드레인하기 위한 별도의 유로가 설치될 수 있으며, 제1, 2유로(22, 23) 및 드레인유로 각각에는 유체의 역류를 방지하기 위한 별도의 밸브가 마련될 수도 있다. At this time, a separate flow path for draining the fluid exceeding the supply may be installed in the pump 21, and separate valves for preventing reverse flow of the fluid in each of the first and second flow paths 22 and 23 and the drain flow path May be provided.

실린더(31)는 미도시된 밸브를 개폐하는 수단으로, 실린더(31)의 로드는 펌프(21)에서 공급되는 유체에 의해 일방향 또는 타방향으로 작동한다. 실린더(31)의 일측부위 및 타측부위 각각은 제1유로(22)의 타단부위 및 제2유로(23)의 타단부위 각각과 연결된다.The cylinder 31 is a means for opening and closing a valve, not shown, and the rod of the cylinder 31 is operated in one direction or the other direction by the fluid supplied from the pump 21. Each of the one side portion and the other side portion of the cylinder 31 is connected to the other end portion of the first passage 22 and the other end portion of the second passage 23, respectively.

제1안전밸브(41)는 펌프(21)를 통해 제1유로(22)로 적정 양 이상의 유체가 공급될 때 이들 중 일부 유체를 제2유로(23)로 이동하도록 유도하는 수단으로, 제1, 2유로(22, 23) 사이를 연결하는 제3유로(42) 상에 마련된다. The first safety valve 41 is a means for inducing some of the fluids to move to the second flow path 23 when a fluid of an appropriate amount or more is supplied to the first flow path 22 through the pump 21. , It is provided on the third passage 42 connecting between the two passages 22 and 23.

제2안전밸브(43)는 펌프(21)를 통해 제2유로(23)로 적정 양 이상의 유체가 공급될 때 이들 중 일부 유체를 제1유로(22)로 이동하도록 유도하는 수단으로, 제3유로(42)와 일정간격 이격되어 제1, 2유로(22, 23) 사이를 연결하는 제4유로(44) 상에 마련된다. The second safety valve 43 is a means for inducing some of the fluids to move to the first flow path 22 when an appropriate amount or more of fluid is supplied to the second flow path 23 through the pump 21. It is provided on the fourth flow path 44 that is spaced apart from the flow path 42 and connects between the first and second flow paths 22 and 23.

축압기(54)는 정전 등으로 인해 구동모터(11)가 작동하지 않을 경우 저장된 유체를 실린더(31)로 공급하여 실린더(31)의 로드를 원위치로 복귀시켜 밸브를 폐쇄하는 수단이다. 축압기(54)에의 유체 저장은, 펌프(21)로부터 실린더(31)로 필요 이상의 유체가 공급되는 경우 이들 중 일부를 우회시키는 방식으로 이루어질 수 있다.The accumulator 54 is a means for closing the valve by supplying the stored fluid to the cylinder 31 and returning the rod of the cylinder 31 to the original position when the drive motor 11 is not operated due to a power failure or the like. Fluid storage in the accumulator 54 may be performed by bypassing some of them when more fluid is supplied from the pump 21 to the cylinder 31.

축압기(54)는 제6유로(52)의 타단부위와 연결되며, 제6유로(52)는 그 일단부위가 제5유로(51)와 연결되며, 제5유로(51)는 제4유로(44)와 일정간격 이격되어 제1, 2유로(22, 23) 사이를 연결한다. The accumulator 54 is connected to the other end of the sixth passage 52, the sixth passage 52 has one end connected to the fifth passage 51, and the fifth passage 51 is a fourth passage It connects between the first and second passages (22, 23) separated by a certain interval from (44).

제1솔레노이드밸브(55)는 평상시에는 개방된 상태를 유지하고, 정전 등으로 인해 구동모터(21)가 작동하지 않는 비상시에는 제2유로(23)를 강제 폐쇄하는 수단으로, 제5유로(51)와 제7유로(53) 사이의 제2유로(23) 상에 마련된다. 제7유로(53)는 그 일단부위가 제6유로(52)와 연결되고, 그 타단부위는 제2유로(23)와 연결된다. The first solenoid valve 55 is a means for forcibly closing the second flow path 23 in the case of an emergency, in which the driving motor 21 is not operated due to a power outage or the like, and maintains an open state in normal times. It is provided on the second passage 23 between) and the seventh passage 53. The seventh passage 53 has one end connected to the sixth passage 52 and the other end connected to the second passage 23.

제2솔레노이드밸브(56)는 제1솔레노이드밸브(55)와 달리 평상시에는 폐쇄된 상태를 유지하나, 정전 등으로 인해 구동모터(21)가 작동하지 않는 비상시에는 제7유로(53)를 개방하는 수단으로, 제7유로(53) 상에 마련된다. 미설명 도면부호 57, 58 각각은 제1, 2보조체크밸브이다.Unlike the first solenoid valve 55, the second solenoid valve 56 maintains a closed state at normal times, but opens the seventh passage 53 in an emergency when the drive motor 21 does not operate due to a power outage or the like. As a means, it is provided on the seventh passage 53. Reference numerals 57 and 58 that are not described are the first and second auxiliary check valves.

또한, 도면부호 61, 63은 제1, 2체크밸브로서, 제1, 2연결유로(62, 64) 각각에 마련된다. 제1, 2체크밸브(61, 63) 각각은 제1, 2유로(22, 23) 각각을 통해 이동하는 유체가 제2, 1유로(23, 22)로 이동하는 것을 차단하게 된다.In addition, reference numerals 61 and 63 denote first and second check valves and are provided in the first and second connection passages 62 and 64, respectively. Each of the first and second check valves 61 and 63 blocks the fluid moving through the first and second passages 22 and 23 from moving to the second and first passages 23 and 22.

이때, 제1, 2체크밸브(61, 63) 각각은 통상적인 파일럿 작동식 체크밸브로 구성되어, 제2, 1유로(23, 22) 상의 유체 압력이 설정된 압력 이상으로 높아지면, 그 작동이 해제되어, 제2, 1유로(23, 22) 상의 유체 중 일부가 제1, 2유로(22, 23)로 이동하도록 유도하여 초과된 압력을 해소시킬 수도 있을 것이다.At this time, each of the first and second check valves 61 and 63 is composed of a conventional pilot operated check valve, and when the fluid pressure in the second and first passages 23 and 22 is higher than the set pressure, the operation is It may be released to induce some of the fluid on the second and first passages 23 and 22 to move to the first and second passages 22 and 23 to relieve the excess pressure.

이러한 구성으로 이루어지는 본 발명의 개략적인 작동 구성을 전술한 설명 및 첨부된 도 2를 참조하여 살펴본다.A schematic operating configuration of the present invention made with such a configuration will be described with reference to the above description and accompanying FIG. 2.

제어부(12)의 입력신호가 전달되면 구동모터(11)가 일방향 또는 타방향으로 회전한다. 구동모터(11)의 회전력은 펌프(21)로 전달되며, 펌프(21)는 전달되는 회전력에 의해 제1, 2탱크(도면부호 미도시)에 저장되어 있던 유체를 펌핑하여 제1유로(22) 또는 제2유로(23) 중의 어느 하나로 유체를 공급한다.When the input signal from the control unit 12 is transmitted, the driving motor 11 rotates in one direction or the other direction. The rotational force of the driving motor 11 is transmitted to the pump 21, and the pump 21 pumps the fluid stored in the first and second tanks (not shown) by the transmitted rotational force, and the first flow path 22 ) Or the second flow path (23).

제1유로(22)로 유체가 공급되면, 유체는 실린더(31)의 일측부위를 통해 실린더(31)로 공급되면서 로드를 일방향으로 작동시키게 되고 이에 따라 미도시된 밸브를 서서히 개방된다. 이와 반대로, 유체가 제2유로(23)로 공급되면, 유체는 실린더(31)의 타측부위를 통해 공급되면서 로드를 타방향으로 작동되며 원위치로 복귀하면서 밸브가 서서히 폐쇄된다.When the fluid is supplied to the first flow path 22, the fluid is supplied to the cylinder 31 through one side of the cylinder 31 to operate the rod in one direction, and accordingly, a valve not shown is gradually opened. On the contrary, when the fluid is supplied to the second flow path 23, the fluid is supplied through the other side of the cylinder 31 and the rod is operated in the other direction, and the valve is gradually closed while returning to the original position.

밸브의 개방 정도 및 폐쇄 정도는 구동모터(11)의 회전력 정도에 따라 달라질 수 있으며, 이 과정에서 일부 유체가 제5, 6유로(51, 52) 각각을 통해 축압기(54)에 저장될 수도 있다. 이때, 제1솔레노이드밸브(55)는 개방 상태를 유지하고, 제2솔레노이드밸브(56)는 폐쇄 상태를 유지한다.The degree of opening and closing of the valve may vary depending on the degree of rotational force of the driving motor 11, and in this process, some fluids may be stored in the accumulator 54 through the fifth and sixth channels 51 and 52, respectively. have. At this time, the first solenoid valve 55 is maintained in an open state, and the second solenoid valve 56 is maintained in a closed state.

만일, 밸브가 개방된 상태에서 정전 등으로 인해 구동모터(21)의 작동이 불가능하면, 제어부(12)의 비상신호에 따라 제1솔레노이드밸브(55)는 강제 폐쇄되고, 제2솔레노이드밸브(56)는 강제 개방된다. 제2솔레노이드밸브(56)가 개방되면, 축압기(54)에 저장되어 있던 유체가 제7, 2유로(53, 23) 각각을 순차적으로 이동하여 실린더(31)의 타측부위로 공급된다.If the operation of the driving motor 21 is impossible due to a power outage or the like while the valve is open, the first solenoid valve 55 is forcibly closed according to an emergency signal from the control unit 12, and the second solenoid valve 56 ) Is forcibly opened. When the second solenoid valve 56 is opened, the fluid stored in the accumulator 54 is supplied to the other side of the cylinder 31 by sequentially moving each of the seventh and second passages 53 and 23.

축압기(54)에 저장되어 있던 유체가 실린더(31)의 타측부위로 공급되면, 실린더(31)의 로드가 타방향으로 서서히 작동하면서 원위치로 복귀하게 되고, 이에 따라 밸브는 서서히 폐쇄된다. 이후, 정전 상태가 해소되어 구동모터(21)의 작동이 정상화되면 제1, 2솔레노이드밸브(55, 56)는 원상태로 복귀하면 비상 상태가 해제되고 정상 작동 상태로 회복된다.When the fluid stored in the accumulator 54 is supplied to the other side of the cylinder 31, the rod of the cylinder 31 gradually operates in the other direction and returns to its original position, and accordingly, the valve is gradually closed. Thereafter, when the power failure state is resolved and the operation of the driving motor 21 is normalized, when the first and second solenoid valves 55 and 56 return to their original state, the emergency state is released and the normal operation state is restored.

이처럼, 본 발명은 펌프로부터 공급되는 유체 중의 일부를 우회시켜 축압기에 저장한 다음, 정전 등으로 인해 구동모터가 작동하지 않는 비상상태가 발생하면, 축압기에 저장된 유체를 실린더로 공급하여 개방된 밸브를 폐쇄시키는 방식이라는 점에서, 종래에 비해 장치 자체를 소형화하면서도 비상 상태에 보다 완벽하게 대처하는 것이 가능하다.As described above, the present invention bypasses some of the fluid supplied from the pump and stores it in the accumulator, and then, when an emergency state in which the driving motor does not operate due to a power outage occurs, the fluid stored in the accumulator is supplied to the cylinder and opened. In terms of closing the valve, it is possible to more completely cope with the emergency state while miniaturizing the device itself compared to the conventional one.

상기에서는 본 발명의 바람직한 실시예들에 한정하여 설명하였으나 이는 단지 예시일 뿐이며, 본 발명은 이에 한정되지 않고 여러 다양한 방법으로 변경되어 실시될 수 있으며, 나아가 개시된 기술적 사상에 기초하여 별도의 기술적 특징이 부가되어 실시될 수 있음은 자명하다 할 것이다.In the above, the description has been limited to the preferred embodiments of the present invention, but this is only an example, and the present invention is not limited thereto and may be changed and implemented in various ways, and further, a separate technical feature is provided based on the disclosed technical idea It will be obvious that it can be added and implemented.

11 : 구동모터 21 : 펌프
22, 23 : 제1, 2유로 31 : 실린더
41, 43 : 제1, 2안전밸브 42, 44 : 제3, 4유로
51, 52, 53 : 제5, 6, 7유로 54 : 축압기
55, 56 : 제1, 2솔레노이드밸브 11: drive motor 21: pump
22, 23: first, second flow 31: cylinder
41, 43: 1st, 2nd safety valve 42, 44: 3rd, 4th euro
51, 52, 53: 5th, 6th, 7th Euro 54: accumulator
55, 56: 1st and 2nd solenoid valve

Claims (1)

제어부(12)의 신호에 따라 동력을 생성하는 구동모터(11);
제1, 2유로(22, 23) 각각의 일단부위와 연결되며, 구동모터(11)로부터 전달되는 동력에 의해 제1유로(22) 또는 제2유로(23)로 유체를 공급하는 펌프(21);
일측부위는 제1유로(22)의 타단부위와 연결되고 타측부위는 제2유로(23)의 타단부위와 연결되어 일방향 또는 타방향으로 작동하는 실린더(31);
제1, 2유로(22, 23) 사이를 연결하는 제3유로(42) 상에 마련되는 제1안전밸브(41), 제3유로(42)와 일정간격 이격되어 제1, 2유로(22, 23) 사이를 연결하는 제4유로(44) 상에 마련되는 제2안전밸브(43);
제4유로(44)와 일정간격 이격되어 제1, 2유로(22, 23) 사이를 연결하는 제5유로(51), 일단부위는 제5유로(51)와 연결되고 타측부위는 일정길이 연장되는 제6유로(52), 일단부위는 제6유로(52)와 연결되고 타단부위는 제2유로(23)와 연결되는 제7유로(53), 제6유로(52)의 타단부위와 연결되는 축압기(54), 제5유로(51)와 제7유로(53) 사이의 제2유로(23) 상에 마련되는 제1솔레노이드밸브(55), 제7유로(53) 상에 마련되는 제2솔레노이드밸브(56);를
포함하는 선박용 전기-정유압 구동장치.
A driving motor 11 that generates power according to a signal from the control unit 12;
A pump 21 connected to one end of each of the first and second passages 22 and 23 and supplying fluid to the first passage 22 or the second passage 23 by the power transmitted from the drive motor 11 );
A cylinder 31 having one side connected to the other end of the first passage 22 and the other side connected with the other end of the second passage 23 to operate in one or the other direction;
The first and second passages 22 are spaced apart from the first safety valve 41 and the third passage 42 provided on the third passage 42 connecting the first and second passages 22 and 23. , 23) a second safety valve 43 provided on the fourth flow path 44 connecting therebetween;
The fifth passage 51 is spaced apart from the fourth passage 44 and connects the first and second passages 22, 23, and one end is connected to the fifth passage 51, and the other side is extended by a certain length. The 6th channel 52, one end is connected to the 6th channel 52, and the other end is connected to the other end of the 7th channel 53 and the 6th channel 52 which is connected to the 2nd channel 23 The accumulator 54, the first solenoid valve 55 provided on the second flow path 23 between the fifth flow path 51 and the seventh flow path 53, The second solenoid valve 56;
Electric-static hydraulic drive system for ships comprising.
KR1020190105018A 2019-08-27 2019-08-27 Electro hydrostatic actuator for ship KR102216916B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103307060A (en) * 2013-06-18 2013-09-18 南京埃尔法电液技术有限公司 Direct drive type servo pump control electro-hydraulic combined driving hydraulic cylinder control system and control method
KR101694889B1 (en) 2016-06-30 2017-01-10 박성환 hydraulic circuit system of electro hydrostatic actuator using bidirectional gear pump
JP2017015253A (en) * 2015-06-30 2017-01-19 グッドリッチ アクチュエーション システムズ エスアーエス Electro hydrostatic actuator and method of controlling and damping hydraulic actuator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103307060A (en) * 2013-06-18 2013-09-18 南京埃尔法电液技术有限公司 Direct drive type servo pump control electro-hydraulic combined driving hydraulic cylinder control system and control method
JP2017015253A (en) * 2015-06-30 2017-01-19 グッドリッチ アクチュエーション システムズ エスアーエス Electro hydrostatic actuator and method of controlling and damping hydraulic actuator
KR101694889B1 (en) 2016-06-30 2017-01-10 박성환 hydraulic circuit system of electro hydrostatic actuator using bidirectional gear pump

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