WO2020037760A1 - Fireproof electro-hydraulic actuator - Google Patents

Fireproof electro-hydraulic actuator Download PDF

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Publication number
WO2020037760A1
WO2020037760A1 PCT/CN2018/107250 CN2018107250W WO2020037760A1 WO 2020037760 A1 WO2020037760 A1 WO 2020037760A1 CN 2018107250 W CN2018107250 W CN 2018107250W WO 2020037760 A1 WO2020037760 A1 WO 2020037760A1
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WIPO (PCT)
Prior art keywords
oil
cylinder
valve
electro
hydraulic actuator
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PCT/CN2018/107250
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French (fr)
Chinese (zh)
Inventor
刘宝军
郑学明
孙贤双
刘观华
张弢
张涛
Original Assignee
沈阳东北电力调节技术有限公司
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Publication of WO2020037760A1 publication Critical patent/WO2020037760A1/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
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • 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
    • F15B1/022—Installations or systems with accumulators used as an emergency power source, e.g. in case of pump failure
    • 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
    • F15B21/087—Control strategy, e.g. with block diagram
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/40—Safety valves; Equalising valves, e.g. pressure relief valves with a fracturing member, e.g. fracturing diaphragm, glass, fusible joint
    • 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
    • F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack

Definitions

  • the invention relates to an electro-hydraulic actuator, in particular to an electro-hydraulic actuator that drives and controls a pipeline valve.
  • Valves are installed in the pipelines of refineries, petroleum reserves and other flammable and explosive occasions.
  • electro-hydraulic actuators that drive and control pipeline valves include rotary oil cylinders, oil tanks, hydraulic accumulators (hereinafter referred to as accumulators) and their oil pipes.
  • the rotary oil cylinders include two oil cylinders, A and B.
  • the left solenoid of the solenoid valve is charged, and the high-pressure oil of the accumulator enters the cylinder A port of the rotary cylinder through the corresponding outlet of the solenoid valve, and the return oil of the B cylinder passes the corresponding inlet of the solenoid valve.
  • the return oil of the B cylinder passes the corresponding inlet of the solenoid valve.
  • the normal state of the pipeline valve in the above situation is that the valve is opened or closed and maintained in position, so the normal state of the electro-hydraulic actuator is that the electromagnetic directional valve is closed. If it is necessary to change the normal state of the valve, such as closing the valve, electric power is needed to excite the solenoid of the electromagnetic reversing valve, so that the electro-hydraulic actuator can work.
  • an object of the present invention is to provide a fireproof electro-hydraulic actuator.
  • the purpose of the present invention is achieved by setting that the rotary oil cylinder drives the valve to close, and the moving direction of the rack is that the rack moves from the A cylinder to the B cylinder.
  • the invention includes a rotating oil cylinder, an oil tank and an oil return pipeline, an accumulator and an oil pipe thereof.
  • the rotating oil cylinder includes two oil cylinders A and B, which is characterized in that: a first fusible plug pipeline One end of the fusible plug pipe is connected to the A cylinder port of the rotary cylinder, and the other end is connected to the accumulator oil pipe. One end of the second fusible plug pipe is connected to the B cylinder port and the other end is connected to the fuel tank. Oil return line.
  • the present invention maintains normal operation as described in paragraph 0002 at normal temperature.
  • the electromagnetic directional valve is closed.
  • the power supply is cut off and the power supply is interrupted for the first time, and the ambient temperature rises to about 250 ° C.
  • the two fusible plugs are melted and the two fusible plug tubes are melted.
  • the road opens, and the high-pressure oil from the accumulator passes through the first fusible plug pipe and enters the oil port of cylinder A.
  • the unpressurized oil in the B oil cylinder passes through its port and the second fusible pipe in sequence and flows back to the fuel tank.
  • the drive rack is moved from the A cylinder to the B cylinder, the gear rotates clockwise, and the drive valve is closed.
  • the positive effect of the present invention is that the operation of closing the valve can be completed in a fire, and the valve is closed in time to avoid the expansion of the fire loss.
  • FIG. 1 is a schematic diagram of the present invention.
  • the rotary oil cylinder 1 is set to drive the valve to close, and the rack moves in the direction that the rack moves from the A cylinder to the B cylinder.
  • the invention includes a rotary oil cylinder, an oil tank 4 and its oil return pipe 41, an accumulator 10 and its oil pipe 101.
  • the rotary oil cylinder includes two oil cylinders A and B. One end of the first fusible plug pipe 3 is connected to A of the rotary oil cylinder. The other end of the oil tank oil port is connected to the accumulator oil pipe 101; one end of the second fusible plug pipe 2 is connected to the oil tank B oil port, and the other end is connected to the oil return pipe 41 of the oil tank.
  • the one-way throttle valve 6 regulates the moving speed of the actuator. 7 is a pressure switch and 8 is a pressure gauge.
  • the present invention works normally at normal temperature, and the oil pump 5 stores energy.
  • the oil pump stops working. If the valve needs to be closed, the left solenoid of the electromagnetic reversing valve 9 is charged, and the high-pressure oil of the accumulator enters the A cylinder port of the rotary cylinder through the corresponding outlet of the electromagnetic reversing valve, and the return oil of the B cylinder passes the corresponding electromagnetic reversing valve.
  • the inlet flows back to the fuel tank, drives the rack 11 from the A cylinder to the B cylinder, drives the gear 12 to rotate clockwise, and drives the valve to close; when the valve is required to be closed to open, the electromagnetic reversing valve is reversed, and the high-pressure oil of the accumulator passes
  • the outlet of the electromagnetic reversing valve after reversing enters cylinder B, and the return oil of cylinder A flows back to the tank through the reversing inlet of the electromagnetic reversing valve, driving the rack from cylinder B to cylinder A, driving the gear to rotate counterclockwise, driving
  • the valve is closed to open; if the valve needs to be held in a certain position, the electromagnetic reversing valve is closed, and all the inlets and outlets of the electromagnetic reversing valve are closed.
  • the normal state of the pipeline valve in the above situation is that the valve is opened and maintained in position, so the normal state of the electro-hydraulic actuator is that the electromagnetic directional valve is closed.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Valve Device For Special Equipments (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

A fireproof electro-hydraulic actuator comprising a rotatable oil cylinder (1), an oil tank (4) and an oil return pipeline (41) thereof, and an energy reservoir (10) and an oil pipe (101) thereof. The rotatable oil cylinder (1) comprises oil cylinders A and B. One end of a first fusible plug pipeline (3) is connected to an oil port of the oil cylinder A of the rotatable oil cylinder (1), and the other end thereof is connected to the oil pipe (101) of the energy reservoir (10). One end of a second fusible plug pipeline (2) is connected to an oil port of the oil cylinder B, and the other end thereof is connected to the oil return pipeline (41) of the oil tank (4). The fireproof electro-hydraulic actuator can complete the operation of closing a valve and will do so in order to avoid the loss in the fire from being expanded by closing the valve in time, and therefore has a fireproof function.

Description

防火电液执行器Fireproof electro-hydraulic actuator 技术领域Technical field
本发明涉及一种电液执行器，具体是驱动、控制管道阀门的电液执行器。The invention relates to an electro-hydraulic actuator, in particular to an electro-hydraulic actuator that drives and controls a pipeline valve.
背景技术Background technique
在炼化厂及石油储备库等属于易燃、易爆的场合，在这样场合的管道中都设有阀门。目前驱动、控制管道阀门的电液执行器，包括旋转油缸、油箱、液压蓄能器(以下称蓄能器)及其油管，其中旋转油缸包括A和B两个油缸。电液执行器驱动、控制管道阀门时，油泵给蓄能器充油，当蓄能器达到设定的压力值时，油泵停止工作。如果阀门需要关闭，电磁换向阀左电磁铁带电，蓄能器的高压油通过电磁换向阀相应的出口进入旋转油缸的A油缸油口，B油缸的回油通过电磁换向阀相应的进口流回油箱，驱动齿条从A油缸移向B油缸，带动齿轮顺时针旋转，驱动阀门关闭；若需要阀门由闭到打开时，电磁换向阀右电磁铁带电即电磁换向阀换向，蓄能器的高压油经过电磁换向阀换向后的出口进入B油缸，A油缸的回油经过电磁换向阀换向后的进口流回油箱，驱动齿条从B油缸移向A油缸，带动齿轮逆时针旋转，驱动阀门由闭到打开；若需要阀门在某一位置保持时，电磁换向阀处于中位，电磁换向阀所有的进口和出口关闭。上述场合的管道阀门的常态是，阀门打开或关闭并保持位置，故电液执行器的常态是电磁换向阀呈关闭状态。若需要改变阀门的常态如关阀门，需要电力使电磁换向阀电磁铁励磁，电液执行器才能工作。Valves are installed in the pipelines of refineries, petroleum reserves and other flammable and explosive occasions. At present, electro-hydraulic actuators that drive and control pipeline valves include rotary oil cylinders, oil tanks, hydraulic accumulators (hereinafter referred to as accumulators) and their oil pipes. The rotary oil cylinders include two oil cylinders, A and B. When the electro-hydraulic actuator drives and controls the pipeline valve, the oil pump fills the accumulator with oil. When the accumulator reaches the set pressure value, the oil pump stops working. If the valve needs to be closed, the left solenoid of the solenoid valve is charged, and the high-pressure oil of the accumulator enters the cylinder A port of the rotary cylinder through the corresponding outlet of the solenoid valve, and the return oil of the B cylinder passes the corresponding inlet of the solenoid valve. Flow back to the fuel tank, drive the rack from the A cylinder to the B cylinder, drive the gear clockwise to drive the valve to close; if the valve is required to be closed to open, the right solenoid of the electromagnetic reversing valve is charged, that is, the electromagnetic reversing valve is reversing, The high-pressure oil from the accumulator enters the oil cylinder B through the outlet reversed by the electromagnetic reversing valve. Drive the gear to rotate counterclockwise to drive the valve from closed to open; if the valve needs to be held in a certain position, the electromagnetic directional valve is in the neutral position, and all the inlets and outlets of the electromagnetic directional valve are closed. The normal state of the pipeline valve in the above situation is that the valve is opened or closed and maintained in position, so the normal state of the electro-hydraulic actuator is that the electromagnetic directional valve is closed. If it is necessary to change the normal state of the valve, such as closing the valve, electric power is needed to excite the solenoid of the electromagnetic reversing valve, so that the electro-hydraulic actuator can work.
当上述易燃、易爆的场合及其设备发生火灾或其他危险事故时，如果能在第一时间关闭阀门，阻断介质，就能够避免火灾事故的扩大，减少损失。但是在上述场合发生火灾时，一般操作是先切断电源，中断供电，这时电磁换向阀处于关闭状态即电液执行器不能工作，阀门无法关闭，即现有的电液执行器不具备防火功能。When a fire or other dangerous accident occurs in the above flammable and explosive places and its equipment, if the valve can be closed and the medium can be blocked in the first time, the expansion of the fire accident can be avoided, and losses can be reduced. However, in the event of a fire in the above situation, the general operation is to first cut off the power supply and interrupt the power supply. At this time, the electromagnetic reversing valve is closed, that is, the electro-hydraulic actuator cannot work, and the valve cannot be closed, that is, the existing electro-hydraulic actuator does not have fire protection. Features.
发明内容Summary of the Invention
为解决上述技术问题，本发明的目的是提供一种防火电液执行器。In order to solve the above technical problems, an object of the present invention is to provide a fireproof electro-hydraulic actuator.
本发明的目的是这样实现的：设定旋转油缸驱动阀门关闭，齿条的移动方向是齿条自A油缸移向B油缸。本发明包括旋转油缸、油箱及其回油管路、蓄能器及其油管，旋转油缸包括A和B两个油缸，其特征是：第一易熔塞管路(易熔塞管路指设置了易熔塞的管路)的一端接在旋转油缸的A油缸油口，另一端接在蓄能器油管上；第二易熔塞管路的一端接在B油缸油口，另一端接在油箱的回油管路上。The purpose of the present invention is achieved by setting that the rotary oil cylinder drives the valve to close, and the moving direction of the rack is that the rack moves from the A cylinder to the B cylinder. The invention includes a rotating oil cylinder, an oil tank and an oil return pipeline, an accumulator and an oil pipe thereof. The rotating oil cylinder includes two oil cylinders A and B, which is characterized in that: a first fusible plug pipeline One end of the fusible plug pipe is connected to the A cylinder port of the rotary cylinder, and the other end is connected to the accumulator oil pipe. One end of the second fusible plug pipe is connected to the B cylinder port and the other end is connected to the fuel tank. Oil return line.
当上述易燃、易爆的场合及其设备没有发生火灾时，电力正常供电，两个易熔塞管路在常温下处于堵塞状态，这时本发明在常温下如0002段所述维持正常工作，一般处于常态，即电磁换向阀处于关闭状态。当上述易燃、易爆的场合及其设备一旦发生火灾时，第 一时间切断电源，中断供电，同时环境温度上升到250℃左右，这时两个易熔塞熔化，两个易熔塞管路开通，蓄能器的高压油经过第一易熔塞管路，进入A油缸油口，同时B油缸里的无压油依次经过其油口、第二易熔塞管路，流回油箱，驱动齿条从A油缸移向B油缸，齿轮顺时针旋转，驱动阀门关闭。When there is no fire in the above flammable and explosive places and its equipment, the power is normally supplied, and the two fusible plug pipes are blocked at normal temperature. At this time, the present invention maintains normal operation as described in paragraph 0002 at normal temperature. , Generally in the normal state, that is, the electromagnetic directional valve is closed. When a fire occurs in the above flammable and explosive places and its equipment, the power supply is cut off and the power supply is interrupted for the first time, and the ambient temperature rises to about 250 ° C. At this time, the two fusible plugs are melted and the two fusible plug tubes are melted. The road opens, and the high-pressure oil from the accumulator passes through the first fusible plug pipe and enters the oil port of cylinder A. At the same time, the unpressurized oil in the B oil cylinder passes through its port and the second fusible pipe in sequence and flows back to the fuel tank. The drive rack is moved from the A cylinder to the B cylinder, the gear rotates clockwise, and the drive valve is closed.
与现有技术相比，本发明的积极效果是：在火灾中仍能完成关闭阀门的作业，及时关闭阀门，避免火灾损失扩大。Compared with the prior art, the positive effect of the present invention is that the operation of closing the valve can be completed in a fire, and the valve is closed in time to avoid the expansion of the fire loss.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
下面结合附图进一步说明本发明。The invention is further described below with reference to the drawings.
图1是本发明的示意图。FIG. 1 is a schematic diagram of the present invention.
具体实施方式detailed description
设定旋转油缸1驱动阀门关闭，齿条的移动方向是齿条自A油缸移向B油缸。本发明包括旋转油缸、油箱4及其回油管路41、蓄能器10及其油管101，旋转油缸包括A和B两个油缸，第一易熔塞管路3的一端接在旋转油缸的A油缸油口，另一端接在蓄能器油管101上；第二易熔塞管路2的一端接在B油缸油口，另一端接在油箱的回油管路41上。单向节流阀6调节执行器的运动速度。7是压力开关，8是压力表。The rotary oil cylinder 1 is set to drive the valve to close, and the rack moves in the direction that the rack moves from the A cylinder to the B cylinder. The invention includes a rotary oil cylinder, an oil tank 4 and its oil return pipe 41, an accumulator 10 and its oil pipe 101. The rotary oil cylinder includes two oil cylinders A and B. One end of the first fusible plug pipe 3 is connected to A of the rotary oil cylinder. The other end of the oil tank oil port is connected to the accumulator oil pipe 101; one end of the second fusible plug pipe 2 is connected to the oil tank B oil port, and the other end is connected to the oil return pipe 41 of the oil tank. The one-way throttle valve 6 regulates the moving speed of the actuator. 7 is a pressure switch and 8 is a pressure gauge.
当上述易燃、易爆的场合及其设备没有发生火灾时，电力正常供电，两个易熔塞管路在常温下处于堵塞状态，这时本发明在常温下正常工作，油泵5给蓄能器充油，当蓄能器压力达到设定的压力值时，油泵停止工作。如果阀门需要关闭，电磁换向阀9左电磁铁带电，蓄能器的高压油通过电磁换向阀相应的出口进入旋转油缸的A油缸油口，B油缸的回油通过电磁换向阀相应的进口流回油箱，驱动齿条11从A油缸移向B油缸，带动齿轮12顺时针旋转，驱动阀门关闭；需要阀门由闭到打开时，电磁换向阀换向，蓄能器的高压油经过电磁换向阀换向后的出口进入B油缸，A油缸的回油经过电磁换向阀换向后的进口流回油箱，驱动齿条从B油缸移向A油缸，带动齿轮逆时针旋转，驱动阀门由闭到打开；若需要阀门在某一位置保持时，关闭电磁换向阀，电磁换向阀所有的进口和出口关闭。上述场合的管道阀门的常态是，阀门打开并保持位置，故电液执行器的常态是电磁换向阀呈关闭状态。When there is no fire in the above flammable and explosive places and its equipment, the power is normally supplied, and the two fusible plug pipes are blocked at normal temperature. At this time, the present invention works normally at normal temperature, and the oil pump 5 stores energy. When the accumulator pressure reaches the set pressure value, the oil pump stops working. If the valve needs to be closed, the left solenoid of the electromagnetic reversing valve 9 is charged, and the high-pressure oil of the accumulator enters the A cylinder port of the rotary cylinder through the corresponding outlet of the electromagnetic reversing valve, and the return oil of the B cylinder passes the corresponding electromagnetic reversing valve. The inlet flows back to the fuel tank, drives the rack 11 from the A cylinder to the B cylinder, drives the gear 12 to rotate clockwise, and drives the valve to close; when the valve is required to be closed to open, the electromagnetic reversing valve is reversed, and the high-pressure oil of the accumulator passes The outlet of the electromagnetic reversing valve after reversing enters cylinder B, and the return oil of cylinder A flows back to the tank through the reversing inlet of the electromagnetic reversing valve, driving the rack from cylinder B to cylinder A, driving the gear to rotate counterclockwise, driving The valve is closed to open; if the valve needs to be held in a certain position, the electromagnetic reversing valve is closed, and all the inlets and outlets of the electromagnetic reversing valve are closed. The normal state of the pipeline valve in the above situation is that the valve is opened and maintained in position, so the normal state of the electro-hydraulic actuator is that the electromagnetic directional valve is closed.
当上述易燃、易爆的场合及其设备发生火灾时，切断电源，中断供电，同时环境温度上升到250℃，这时两个易熔塞21和31熔化，两个易熔塞管路开通，蓄能器的高压油经过第一易熔塞管路，进入A油缸油口，同时B油缸里的无压油依次经过其油口、第二易熔塞管路，流回油箱，驱动齿条从A油缸移向B油缸，齿轮顺时针旋转，驱动阀门关闭。When a fire occurs in the above flammable and explosive places and its equipment, cut off the power supply and interrupt the power supply. At the same time, the ambient temperature rises to 250 ° C. At this time, the two fusible plugs 21 and 31 are melted and the two fusible plug pipes are opened. The high-pressure oil from the accumulator passes through the first fusible plug pipeline and enters the oil port of cylinder A. At the same time, the unpressurized oil in the B cylinder passes through its oil port and the second fusible plug pipeline in sequence, flows back to the fuel tank, and drives the gear. The bar moves from cylinder A to cylinder B, and the gears rotate clockwise to drive the valve to close.

Claims (1)

  1. 一种防火电液执行器，包括旋转油缸、油箱及其回油管路、蓄能器及其油管，旋转油缸包括A和B两个油缸，其特征是：第一易熔塞管路的一端接在旋转油缸的A油缸油口，另一端接在蓄能器油管上；第二易熔塞管路的一端接在B油缸油口，另一端接在油箱的回油管路上。A fireproof electro-hydraulic actuator includes a rotating oil cylinder, an oil tank and an oil return pipe, an accumulator and an oil pipe thereof. The rotating oil cylinder includes two oil cylinders A and B, which is characterized in that one end of a first fusible plug pipe is connected to At the A-cylinder oil port of the rotating oil cylinder, the other end is connected to the accumulator oil pipe; one end of the second fusible plug pipe is connected to the B-cylinder oil port, and the other end is connected to the oil return pipe of the oil tank.
PCT/CN2018/107250 2018-08-23 2018-09-25 Fireproof electro-hydraulic actuator WO2020037760A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810965743.0 2018-08-23
CN201810965743.0A CN108843844A (en) 2018-08-23 2018-08-23 Fire prevention electro-hydraulic actuator

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