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WO2018036497A1 - Dispositif d'entraînement et actionneur de vanne basés sur un ressort composite gaz-fluide - Google Patents

Dispositif d'entraînement et actionneur de vanne basés sur un ressort composite gaz-fluide Download PDF

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Publication number
WO2018036497A1
WO2018036497A1 PCT/CN2017/098572 CN2017098572W WO2018036497A1 WO 2018036497 A1 WO2018036497 A1 WO 2018036497A1 CN 2017098572 W CN2017098572 W CN 2017098572W WO 2018036497 A1 WO2018036497 A1 WO 2018036497A1
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WO
WIPO (PCT)
Prior art keywords
cylinder
gas
piston
liquid combined
combined spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/098572
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English (en)
Chinese (zh)
Inventor
王正权
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHENGDU MAIKESEN FLUID CONTROL EQUIPMENT Co Ltd
Original Assignee
CHENGDU MAIKESEN FLUID CONTROL EQUIPMENT Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CHENGDU MAIKESEN FLUID CONTROL EQUIPMENT Co Ltd filed Critical CHENGDU MAIKESEN FLUID CONTROL EQUIPMENT Co Ltd
Publication of WO2018036497A1 publication Critical patent/WO2018036497A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
    • 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

Definitions

  • the invention relates to the field of valve actuators, in particular to a driving device and a valve actuator based on a gas-liquid combined spring.
  • the actuator is a control actuator for opening and closing the valve. Its structure generally includes a power actuator, an execution box, and a spring cylinder. Generally, it is used in an emergency working condition and pipeline application system in the event of an emergency. At the same time, when the control system loses power or air, the single-acting actuator can automatically reset and drive the valve to a pre-designed fail-safe position, thereby minimizing the potential hazard of the entire device.
  • Single-acting actuators typically use energy stored in a compressed metal spring, UPS emergency power source, or accumulator tank, and other pre-stored energy such as a weight to act as actuator drive. Among them, the compressed metal spring is the most used actuator drive.
  • Actuator spring cylinders are mechanical components that work with the elasticity of a compression spring.
  • the spring is a part made of an elastic material, which is deformed by an external force, and is restored to its original state after the external force is removed.
  • Springs are generally made of spring steel.
  • Actuator spring cylinders for driving large-size valves have always been a problem: heavy weight, large volume, and Use space and waste resources.
  • the spring According to the working characteristics of the single-acting spring actuator, the spring is in a compressed state for a long time, which is easy to compress and deform, and spring fatigue occurs. The spring loses its original elasticity and reduces the reliability of the action in an emergency.
  • the force of the spring required by the actuator cannot be accurately quantified, and the time and speed at which the valve is driven cannot be finely controlled. Once the spring is shaped, the output force is determined, and the spring force cannot be adjusted, and it is less likely to increase.
  • the spring is easily deformed and produces abnormal noise, which causes an unsafe psychological burden; the spring break of the actuator also occurs from time to time.
  • the spring output must have a considerable amount of force to drive the valve. Therefore, the conventional metal spring cylinder needs special tooling compression assembly, assembly efficiency and assembly risk when assembled to the actuator.
  • the object of the present invention is to overcome the deficiencies of the prior art and provide a hydraulic valve actuator based on a gas-liquid combined spring, which solves the problem that the conventional valve actuator adopts a traditional spring cylinder with heavy weight, large volume, space occupation and fatigue. Failure, installation trouble, etc.
  • a driving device based on a gas-liquid combined spring comprising a power cylinder, wherein the power cylinder is provided with a gas-liquid combined spring device, the gas-liquid combined spring device comprises a pressure vessel tank, and the upper end of the pressure vessel tank is provided with a gas input port, The upper part and the lower part of the pressure vessel tank are respectively a compressed gas chamber filled with compressed gas, the compressed oil chamber is filled with compressed oil, and the hydraulic oil chamber is filled with hydraulic oil, and the lower end of the pressure vessel tank is provided with hydraulic pressure Oil exports.
  • the power cylinder includes a cylinder, a piston, a cylinder block and a piston rod, and the front end of the piston
  • the cylinder inner cavity is a piston front cylinder
  • the cylinder inner cavity at the rear end of the piston is a piston rear cylinder.
  • the power cylinder is a hydraulic cylinder or a cylinder.
  • the cylinder block is provided with a hydraulic oil passage communicating with the piston front cylinder, and the hydraulic oil outlet is connected to the piston front cylinder through the oil pipe and the hydraulic oil passage; when the hydraulic cylinder is oiled, the hydraulic cylinder is The piston pushes the piston rod forward, and at the same time, the gas-liquid combined spring device is compressed. When the hydraulic cylinder is drained, the piston retracts when the gas-liquid combined spring device and the hydraulic cylinder act together to pull down the piston rod.
  • the cylinder block is provided with a hydraulic oil passage communicating with the piston front cylinder, and the hydraulic oil outlet is communicated with the piston front cylinder through the oil pipe and the hydraulic oil passage; when the cylinder is intakeed, the piston of the cylinder is pushed The piston rod moves forward, and at the same time, the gas-liquid combined spring device is compressed, and when the cylinder is deflated, the piston retracts when the gas-liquid combined spring device and the cylinder act together to pull down the piston rod.
  • the upper end of the pressure vessel can is also provided with a pressure gauge for monitoring the internal pressure thereof in real time.
  • an oil filtering device is disposed at the hydraulic oil outlet in the pressure vessel tank.
  • the oil pipe is provided with a flow regulating valve, and the flow rate regulating valve adjusts the flow rate of the hydraulic oil, thereby controlling the speed of the pressure release, and ensuring that the movement process and the moving speed of the soft spring are precisely controllable.
  • oil pipe is further provided with a shut-off valve for closing or opening the gas-liquid combined spring device at any time.
  • a valve actuator includes an actuator and a power cylinder.
  • the power cylinder is provided with a gas-liquid combined spring device.
  • the power cylinder is mounted on a box of the actuator through a cylinder block, and the piston rod and the actuator of the power cylinder The forks are linked.
  • the present invention has the following advantages and beneficial effects:
  • Gas-liquid combined spring device replaces the metal spring or metal spring cylinder used in the traditional single-acting valve actuator.
  • Gas-liquid combined spring device is structural design, manufacturing process, manufacturing cost, installation difficulty, actuator-driven valve application efficiency, field replacement and fault repair Greatly improved.
  • the high-pressure gas has the advantages of small volume, light weight, easy compression, fatigue, reusability, rapid response, and convenient charging.
  • the device is used as an output control device instead of a spring, which can reduce the use of a series of metal materials such as spring steel.
  • the gas-liquid combined spring device adopts hydraulic oil as the transmission medium, which has large rigidity, small elasticity, is not easy to be compressed, and has smooth transmission, can realize stepless speed regulation, self-lubricating and no rust.
  • Figure 1 is a schematic structural view of a conventional valve actuator
  • FIG. 2 is a schematic structural view of a driving device based on a gas-liquid combined spring using a hydraulic cylinder of the power cylinder of the present invention
  • FIG. 3 is a schematic structural view of a driving device based on a gas-liquid combined spring using a cylinder of a power cylinder according to the present invention
  • FIG. 4 is a schematic structural view of a valve actuator using a hydraulic cylinder of the power cylinder of the present invention
  • Figure 5 is a schematic view showing the structure of a valve actuator using a cylinder of the power cylinder of the present invention
  • the driving device based on the gas-liquid combined spring comprises a power cylinder 2, the power cylinder 2 is a hydraulic cylinder, and the power cylinder 2 is provided with a gas-liquid combined spring device 12, and the gas-liquid combined spring device 12
  • the pressure vessel tank 13 is provided.
  • the upper end of the pressure vessel tank 13 is provided with a gas inlet port 22.
  • the upper and lower portions of the pressure vessel tank 13 are respectively a compressed gas chamber 15 and a hydraulic oil chamber 16, and the compressed gas chamber 15 is filled with compressed gas and hydraulic oil.
  • the chamber 16 is filled with hydraulic oil, and the lower end of the pressure vessel tank 13 is provided with a hydraulic oil outlet 17.
  • the power cylinder 2 includes a cylinder block 3, a piston 4, a cylinder block 5 and a piston rod 6.
  • the inner cavity of the cylinder 3 at the front end of the piston 1 is a piston front cylinder 7, and the inner cavity of the cylinder 3 at the rear end of the piston 4 is a piston rear cylinder 8. .
  • the cylinder block 5 is provided with a hydraulic oil passage 19 communicating with the piston front cylinder 7, and the hydraulic oil outlet 17 communicates with the piston front cylinder 7 through the oil pipe 18 and the hydraulic oil passage 19; when the hydraulic cylinder is oiled, the piston 4 of the hydraulic cylinder pushes the piston The rod 6 moves forward while the gas-liquid combined spring device 12 is compressed. When the hydraulic cylinder is drained, the piston 4 retracts the piston rod 6 by the combination of the gas-liquid combined spring device 12 and the hydraulic cylinder.
  • the upper end of the pressure vessel can 13 is also provided with a pressure gauge 20 for monitoring the internal pressure thereof in real time.
  • An oil filter device 21 is provided at the hydraulic oil outlet 17 in the pressure vessel tank 13.
  • the oil pipe 18 is provided with a flow regulating valve 14 for regulating the flow rate of the hydraulic oil through the flow regulating valve 14, thereby controlling the speed of the pressure release, and ensuring that the movement process and the operating speed of the soft spring are accurately controllable.
  • the oil pipe 18 is also provided with a shut-off valve 9 for closing or opening the gas-liquid combined spring device 12 at any time.
  • the present invention is a driving device based on a gas-liquid combined spring.
  • the power cylinder 2 is a cylinder
  • the cylinder block 5 is provided with hydraulic oil connected to the piston front cylinder 7.
  • the passage 19, the hydraulic oil outlet 17 communicates with the piston front cylinder 7 through the oil pipe 18 and the hydraulic oil passage 19; when the cylinder is intakeed, the piston 4 of the cylinder pushes the piston rod 6 to move forward, and at the same time, the gas-liquid combined spring device
  • the piston 4 is retracted by the gas-liquid combination spring device 12 and the cylinder acting together to pull down the piston rod 6.
  • a valve actuator of the present invention comprises an actuator 1 and a hydraulic cylinder.
  • the hydraulic cylinder comprises a cylinder 3, a piston 4, a cylinder block 5 and a piston rod 6.
  • the inner cavity of the cylinder 3 at the front end of the piston 1 is The piston front cylinder 7, the inner chamber of the cylinder 3 at the rear end of the piston 4 is a piston rear cylinder 8, and the hydraulic cylinder is mounted on the casing 10 of the actuator 1 through the cylinder block 5, the piston rod 6 and the actuator of the hydraulic cylinder 1 of the fork 11 linkage.
  • the hydraulic cylinder is provided with a gas-liquid combined spring device 12, and the gas-liquid combined spring device 12 includes a pressure vessel can 13.
  • the upper end of the pressure vessel can 13 is provided with a gas input port 22 through which the gas inlet port 22 can be placed.
  • the high pressure nitrogen gas is input.
  • the upper and lower portions of the pressure vessel tank 13 are respectively a compressed gas chamber 15 and a hydraulic oil chamber 16, and the compressed gas chamber 15 is filled with compressed gas.
  • the hydraulic oil chamber 16 is filled with hydraulic oil, and the lower end of the pressure vessel tank 13 is provided. There is a hydraulic oil outlet 17.
  • the cylinder block 5 is provided with a hydraulic oil passage 19 communicating with the piston front cylinder 7, and the hydraulic oil outlet 17 communicates with the piston front cylinder 7 through the oil pipe 18 and the hydraulic oil passage 19; when the hydraulic cylinder is oiled, the piston 4 of the hydraulic cylinder pushes the piston The rod 6 moves forward, and the piston rod 6 pushes the fork 11 to open the valve. At the same time, the gas-liquid combined spring device 12 is compressed, and when the hydraulic cylinder is drained, the piston 4 is combined by the gas-liquid combined spring device 12 and the hydraulic cylinder. Pulling the piston rod 6 to retract, the piston rod 6 drives the shift fork 11 to reversely move the valve.
  • the upper end of the pressure vessel can 13 is also provided with a pressure gauge 20 for real-time monitoring of the internal pressure thereof.
  • the pressure gauge 20 can conveniently indicate the magnitude of the gas pressure and accurately display the value of the soft spring to accurately control the required force.
  • pressure transmitters or pressure sensors can also be used to achieve the same quantitative pressure.
  • the hydraulic oil outlet 17 in the pressure vessel tank 13 is provided with an oil filter Set 21.
  • the oil pipe 18 is provided with a flow regulating valve 14 for controlling the elastic strength of the gas-liquid combined spring device 12.
  • the oil pipe 18 is also provided with a shut-off valve 9 for closing or opening the gas-liquid combined spring device 12 at any time.
  • the structural principle of the gas-liquid combined spring device 12 the oil-gas spring is filled with compressed gas and oil in a closed container, and the device that uses the compressibility of the gas to realize the spring is called a gas spring.
  • the oil and gas spring uses inert gas (nitrogen) as the elastic medium and oil as the force transmitting medium, which is generally composed of a gas spring and a hydraulic cylinder equivalent to a hydraulic damper.
  • the oil and gas spring is divided into a single air chamber, a double air chamber and a two-stage pressure type.
  • Single-chamber oil and gas springs are divided into two types: oil-gas separation and oil-gas separation.
  • the invention adopts oil and gas non-separating type.
  • the working principle and the action relationship of the hydraulic valve actuator based on the gas-liquid combined spring are the main energy storage device, which is the main body of the compressed gas storage; the bottom hydraulic oil is the closed insulating medium of the high pressure gas. It is also the transmission medium for the release of power gas energy during work and energy conversion; the working power of the system energy is derived from the high-pressure compressible gas in the head space of the hydraulic oil in the closed container.
  • the high-pressure sealed compressed gas in the pressure vessel tank 13 is stored (pre-inflated) as a power, and the pressure vessel can 13 and the hydraulic oil at the lower end are used as isolation, and the liquid oil is used as a transmission medium to smoothly and safely convert the energy stored in the high-pressure compressed gas. Released for energy.
  • the closed gas pressure is automatically pressurized to store energy for reuse.
  • the output energy can be easily adjusted by the pressure of the high-pressure gas filling.
  • the filling valve can easily realize the charging and discharging of the high-pressure compressed gas in the closed space, and adjust the gas pressure to adjust the strength of the soft spring.
  • the output stroke and output thrust can be conveniently adjusted by comprehensively adjusting the pressure or volume of the compressed gas and the amount of hydraulic oil.
  • the output force direction is unrestricted and the output actuators are usually piston type and can be connected to the output actuator via a high pressure hose.
  • the utility model relates to a hydraulic valve actuator based on a gas-liquid combined spring, which combines the advantages of gas and liquid, fully utilizes the characteristics of the compressed gas and the medium of the transmission medium, and uses the high pressure gas compressed by the gas according to the compressibility characteristics of the gas.
  • the elastic element works for external expansion.
  • the pressure of the compressed gas source is transmitted to the actuator through the liquid as the transmission medium equal pressure output.
  • the compressed gas volume of the gas-liquid soft spring tank can be controlled and the pressure (remote/in-place) can be read.
  • the high pressure compressed gas has a constant pressure, high repeatability, and is not prone to failure and accidents. Therefore, the output torque of the actuator can be kept constant for a long time, and the purpose of accurately controlling the output thrust (torque) and the action time required by the actuator can be achieved.
  • the hydraulic speed control valve can be used to adjust the flow rate, output flow rate and speed of action.
  • the pneumatic hydraulic soft spring can effectively absorb vibration and pulsation during the system transmission process, avoiding the turbulence of the valve movement process and achieving the gentle action of the actuator driving valve. This is evident in the high torque valve actuators required for high-grade, large-diameter valves.
  • the high-pressure gas has the advantages of small volume, light weight, easy compression, fatigue, reusability, rapid response, and convenient charging by using a controllable compressed gas instead of a conventional metal spring.
  • the device In the oil and gas storage and transportation, oil and gas, chemical, metallurgical and other widely used single-acting actuator valves and other industrial fields, the device is used as an output control device instead of a spring, which can reduce the use of a series of metal materials such as spring steel.
  • the power cylinder 2 is a cylinder
  • the cylinder block 5 is provided with a hydraulic oil passage 19 communicating with the piston front cylinder 7, and a hydraulic oil outlet 17
  • the oil pipe 18 and the hydraulic oil passage 19 communicate with the piston front cylinder 7; when the cylinder is inflated, the piston 4 of the hydraulic cylinder pushes the piston rod 6 forward, and the piston rod 6 pushes the fork 11 to open the valve, and at the same time, the gas-liquid combination
  • the spring device 12 is compressed, and when the cylinder is deflated, the piston 4 is in the gas-liquid combined spring device 12 and the gas
  • the cylinder cooperates to pull down the piston rod 6 to retract, and the piston rod 6 drives the shift fork 11 to reversely move the valve.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

L'invention concerne un dispositif d'entraînement et un actionneur de vanne basés sur un ressort composite gaz-fluide. Le dispositif d'entraînement comprend un vérin d'assistance (2). Un dispositif à ressort composite gaz-fluide (12) est disposé sur le vérin d'assistance (2) et comprend un récipient sous pression (13). Une entrée de gaz (22) se trouve au niveau d'une extrémité supérieure du récipient sous pression. Une portion supérieure et une portion inférieure à l'intérieur du récipient sous pression (13) sont respectivement une chambre de gaz comprimé (15) et une chambre de fluide hydraulique (16). La chambre de gaz comprimé (15) est remplie d'un gaz comprimé et la chambre de fluide hydraulique (16) est remplie d'un fluide hydraulique. Un orifice de sortie de fluide hydraulique (17) se trouve à une extrémité inférieure du récipient sous pression. L'actionneur de vanne comprend un actionneur (1) et le vérin d'assistance (2). Le vérin d'assistance (2) est disposé sur l'actionneur (1) et il est pourvu du dispositif à ressort composite gaz-fluide (12). En comparaison d'un ressort métallique ou d'un cylindre à ressort métallique employé dans un actionneur de vanne à simple action classique, le dispositif à ressort composite gaz-fluide (12) selon la présente invention présente de nombreux avantages dans la conception structurale, le processus de fabrication ainsi que l'installation et le remplacement de celui-ci. De plus, l'actionneur de vanne selon la présente invention présente une nette amélioration de l'efficacité et de la fiabilité d'application, permet d'économiser de l'énergie, et il est respectueux de l'environnement.
PCT/CN2017/098572 2016-08-25 2017-08-23 Dispositif d'entraînement et actionneur de vanne basés sur un ressort composite gaz-fluide Ceased WO2018036497A1 (fr)

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Application Number Priority Date Filing Date Title
CN201610722404.0A CN106090402B (zh) 2016-08-25 2016-08-25 一种基于气液组合弹簧的驱动装置及阀门执行器
CN201610722404.0 2016-08-25

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CN108916455A (zh) * 2018-09-25 2018-11-30 无锡市经登自控阀门有限公司 具有两屏互换结构的电液联动执行器
CN109340443A (zh) * 2018-12-12 2019-02-15 成都迈可森流体控制设备有限公司 一种适用于大口径阀门、低气源的小型化气液联动执行器
CN109622771A (zh) * 2019-01-25 2019-04-16 东莞市博鼎精密机械制造有限公司 一种新型回程时间可调液压斜楔系统
CN111688426A (zh) * 2020-02-25 2020-09-22 中国北方车辆研究所 蓄能器横置平衡油气悬挂
CN112254896A (zh) * 2020-09-08 2021-01-22 合肥通用机械研究院有限公司 一种角行程阀杆用填料密封系统性能试验装置及试验方法
CN112555224A (zh) * 2019-09-10 2021-03-26 山东奥博控制技术有限公司 一种单作用气动执行机构带安全检测探头的装置
CN112935887A (zh) * 2021-03-10 2021-06-11 常州工业职业技术学院 机器人部件智能化镗铣加工中心压紧装置
EP4173962A1 (fr) * 2021-10-27 2023-05-03 Airbus Operations (S.A.S.) Enceinte contenant un gaz d'inertage et comprenant un système d évacuation de liquide, aéronef comportant une telle enceinte

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CN106090402B (zh) * 2016-08-25 2018-12-04 成都迈可森流体控制设备有限公司 一种基于气液组合弹簧的驱动装置及阀门执行器
CN106733311A (zh) * 2016-12-29 2017-05-31 北京东方诚国际钢结构工程有限公司 一种涂胶机系统及涂胶方法
CN106762870A (zh) * 2016-12-29 2017-05-31 北京东方诚国际钢结构工程有限公司 一种涂胶机稳定压力源及实现方法
CN107179156A (zh) * 2017-06-30 2017-09-19 武汉轻工大学 一种压力表校验器
CN109555749B (zh) * 2019-01-03 2023-09-12 杨斌堂 多管自给装置
CN110131346A (zh) * 2019-04-11 2019-08-16 宁波一力减震器有限公司 一种双缸调压复位弹簧

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CN106090402A (zh) * 2016-08-25 2016-11-09 成都迈可森流体控制设备有限公司 一种基于气液组合弹簧的驱动装置及阀门执行器
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CN112555224A (zh) * 2019-09-10 2021-03-26 山东奥博控制技术有限公司 一种单作用气动执行机构带安全检测探头的装置
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