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WO2016202356A1 - Système d'entraînement et procédé pour faire fonctionner un entraînement en rotation à commande fluidique - Google Patents

Système d'entraînement et procédé pour faire fonctionner un entraînement en rotation à commande fluidique Download PDF

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Publication number
WO2016202356A1
WO2016202356A1 PCT/EP2015/063332 EP2015063332W WO2016202356A1 WO 2016202356 A1 WO2016202356 A1 WO 2016202356A1 EP 2015063332 W EP2015063332 W EP 2015063332W WO 2016202356 A1 WO2016202356 A1 WO 2016202356A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive
fluid
drive system
control valve
housing
Prior art date
Application number
PCT/EP2015/063332
Other languages
German (de)
English (en)
Inventor
Uwe Mödinger
Original Assignee
Festo Ag & Co. Kg
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 Festo Ag & Co. Kg filed Critical Festo Ag & Co. Kg
Priority to PCT/EP2015/063332 priority Critical patent/WO2016202356A1/fr
Priority to DE112015006510.5T priority patent/DE112015006510A5/de
Publication of WO2016202356A1 publication Critical patent/WO2016202356A1/fr

Links

Classifications

    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2807—Position switches, i.e. means for sensing of discrete positions only, e.g. limit switches
    • 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
    • F15B11/064—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam with devices for saving the compressible medium
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/02—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
    • F15B15/065—Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement the motor being of the rack-and-pinion type
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/202—Externally-operated valves mounted in or on the actuator
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6336—Electronic controllers using input signals representing a state of the output member, e.g. position, speed or acceleration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/88—Control measures for saving energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/885—Control specific to the type of fluid, e.g. specific to magnetorheological fluid
    • F15B2211/8855—Compressible fluids, e.g. specific to pneumatics

Definitions

  • the invention relates to a drive system having a fluid-actuated rotary drive, which has a housing with a piston chamber in which a drive piston assembly for driving a rotatably mounted output shaft is arranged, wherein the drive piston assembly divides the piston chamber into at least two working chambers, which via a control valve device with under a system pressure pressurized fluid
  • the drive piston assembly is movable depending on Fluid Kunststoffbeetzung one or the other working chamber in a first or a second end position, and with a position detection device for detecting the end positions and providing the end positions associated position signals to an associated electronic control device for controlling the Control valve device can be transmitted.
  • the object of the invention is therefore to provide a drive system and a method for operating a fluid-actuated rotary drive, with which the consumption of pressure fluid can be reduced, for example when actuating a valve member of a process valve over conventional drive systems.
  • the drive system according to the invention is characterized in that the electronic control device has electronic control means which are designed such that the control valve device is switchable so that the pressurized fluid chamber working chamber is vented before the system pressure builds up in the working chamber, if Position detection device detects one of the end positions.
  • both end positions which of course can not be taken at the same time, are monitored and there is a venting of both the one and the other work chambers.
  • the electronic control device and the fluid-operated rotary drive are combined to form a module. It is for example possible that the electronic control device is on board the fluid-operated rotary drive. Alternatively, it is possible to use an external electronic control device.
  • the signal transmission between the position detection device and the electronic control device can be cable-based or wireless, in particular with an external electronic control device, the wireless variant for signal transmission is preferable.
  • the position detection device has a magnet arrangement generating a magnetic field and a position feedback sensor detecting the magnetic field when one of the end positions is reached in order to generate the position signal assigned to one of the end positions.
  • the position feedback sensor may include, for example, a Hall sensor, for example a 3D Hall sensor.
  • the magnet arrangement is arranged on the drive piston arrangement and the position feedback on the housing of the rotary drive. In this case, it is thus possible that the magnet assembly is moved in the movement of the drive piston assembly in the end position and the position feedback is arranged on the housing, for example on an end wall of the associated working chamber or preferably on an end stop for the drive piston assembly. In a preferred variant, the magnet arrangement is at an axial led out of the housing end of
  • the position feedback may be used for example in a wall portion of the housing of the rotary drive or alternatively be attached to the top of the housing.
  • control valve devices and the fluid-actuated valve drive are combined to form a module.
  • the control valve device may, for example, comprise at least one monostable or bistable control valve.
  • the control valve may be formed, for example, as a 5/2 or 5/3 way valve.
  • the housing of the rotary drive has a mounting portion on which a functional module arrangement is mounted, in which the electronic control device and / or the control valve device are accommodated.
  • the attachment portion is located on a front side of the housing.
  • a valve fitting through which liquid or gaseous process medium flows is provided, with a valve member arranged in the process medium, which can be positioned in different valve positions via the rotary drive coupled to the valve fitting.
  • the coupling of the valve member to the rotary drive preferably takes place with a spindle.
  • the spindle in turn is rotatably coupled to the output shaft, whereby the tappable on the output shaft rotary output movement to the spindle and ultimately to the valve member is transferable. If one of the end positions of the drive piston is Order reached, the valve member is in a defined valve position, such as open or
  • valve member as a stopcock, in particular ball valve, plug cock o. is trained.
  • the invention further comprises a method of operating a fluid operated rotary actuator having a housing with a piston chamber by a drive arrangement is arranged for driving a rotatably mounted output shaft, wherein the drive piston assembly divides the piston chamber into two working chambers, which via a control valve means under a system pressure pressurized fluid, the method comprising the following steps: pressurizing one of the two working chambers with fluid pressure, whereby the drive piston assembly is moved in the direction of one of two end positions,
  • Detecting the relevant end position by means of a position detection device and providing a position signal assigned to the end position and transmitting the position signal to an electronic control device,
  • FIG. 1 shows a first exemplary embodiment of the drive system according to the invention
  • Figure 3 shows a second exemplary embodiment of the drive system according to the invention, in which case only the fluid-operated rotary drive of the drive system with position detection device is shown.
  • FIG. 1 shows a first embodiment of the drive system 80 according to the invention, which is shown in the example shown as a process valve assembly.
  • the drive system 80 has a valve fitting, which has a valve housing 81 which is penetrated by a medium channel 82 through which liquid or gaseous process medium can flow.
  • the fitting housing 81 has at one end a first guide connection 31a and at the other end a second guide connection, via which the valve fitting 24 can be connected to a pipeline through which process medium flows.
  • valve fitting 24 An essential element of the valve fitting 24 is a valve member, which in the example as a ball valve (not shown) is trained.
  • the ball valve has a passage opening, which is aligned in an open position with the medium channel 82, so that process medium can pass through the valve fitting 24.
  • the closed position of the ball valve which is rotated in particular by 90 ° relative to the open position, the passage through the medium channel 82 is shut off. It is of course possible to use other valve members other than a ball valve, for example one
  • valve member can move between at least one open and one closed position.
  • the valve member is connected to a spindle (not shown), which is led out of the fitting housing 81 perpendicular or obliquely to the flow direction.
  • the top of the fitting housing 81 has an example plate-like mounting flange 83, to which a fluid-operated rotary actuator 10 is attached for actuating the valve member.
  • the rotary drive 10 has a particular designed as a tubular body 44 housing 1, which is penetrated in the axial direction of a piston chamber 11.
  • a drive piston assembly 19 is received and guided in a movable manner.
  • the drive piston arrangement 19 serves to drive an output shaft 6, which is rotatably mounted about an axis of rotation and runs perpendicular to the axial direction 26 through the tubular body 44 of the housing 1 and whose axial end 33 is led out of the tubular body 44 at an upper wall section 35.
  • the drive piston assembly 19 has a first drive piston 19a and a second drive piston 19b, which divide the piston chamber into a first and second working chamber IIa, IIb.
  • the two drive pistons 19a, 19b are arranged coaxially with one another and each comprise axially oriented racks, not shown here, which are in meshing engagement with an output gear 6 disposed on the output shaft 6 for linear movement of the drive pistons 19a and 19b into rotary motion of the output shaft 6 implement.
  • the racks are on opposite sides of the
  • Output shaft 6 is arranged so that opposing linear movements of the drive piston 19 a and 19 b are converted into respective rotational movements of the output shaft 6.
  • the output shaft 6 rotates in a first rotational direction when the drive pistons 19a, 19b converge toward each other and in a second rotational direction when the drive pistons 19a and 19b move away from each other.
  • a lever rocker Scotch yoke
  • the drive pistons 19a and 19b divide the piston chamber 11 into two working chambers IIa and IIb.
  • the first chamber IIa is divided into two and is located between the first drive piston 19a and a partition wall 13 as a front end and between the second drive piston 19b and the rear end of the piston chamber 11.
  • the second working chamber IIb is located between the first drive piston 19a and the second drive piston 19b.
  • the housing 1 further comprises an axial end 2 - ie at one end of the housing 1 in the axial direction 26 - an open towards the piston chamber 11 end face 3 with at least one for attachment of a
  • Housing cover 4 suitable attachment portion 5.
  • the drive system 80 further comprises a control valve device 86, via which the working chambers IIa, IIb pressurized fluid under a system pressure, in particular compressed air can be acted upon, so that the drive piston assembly 19 depending on Fluiddruckbeaufschlagung one or the other working chamber IIa, IIb in a first or a second End position 87a, 87b are movable.
  • a control valve device 86 via which the working chambers IIa, IIb pressurized fluid under a system pressure, in particular compressed air can be acted upon, so that the drive piston assembly 19 depending on Fluiddruckbeaufschung one or the other working chamber IIa, IIb in a first or a second End position 87a, 87b are movable.
  • both drive pistons are movable toward one another when fluid pressure is applied to the first working chamber IIa and travel together in each case into their first end position 87a.
  • the drive pistons 19a, 19b move in opposite directions and travel together into their second end position 87b.
  • control valve device 86 comprises a bistable control valve 88, which is accommodated in a functional module arrangement 7 attached to the attachment section 5 of the housing.
  • the control valve 88 is mounted on a base 89, which in turn sits on the partition wall 13, which divides the functional module 17 of the functional module arrangement 7 shown into a piston chamber portion 12 and a module space 21.
  • the control valve 88 is connected via corresponding module-side and housing-side working channels with the two working chambers IIa, IIb.
  • the drive system 80 further comprises a position detection device 90 for detecting the end positions 87a, 87b of the drive piston assembly 19, in particular the simultaneously occupied first or second end positions 87a, 87b of two drive pistons 19a, 19b.
  • the position detection device 90 has a magnet arrangement 34 and a position indicator 36.
  • the magnet arrangement 34 generates a magnetic field which, when one of the end positions 87a, 87b is reached, can be detected by the position feedback detector 36, which generates an actuating signal assigned to the respective end position 87a, 87b.
  • the magnet assembly 34 in particular magnetic rods of the magnet assembly 34 in the first and second drive piston 19a, 19b, while the position feedback sensor 36, which is formed for example as a Hall sensor, at end stops , which are adjustable, for example, from the outside, to adjust the end positions 87a, 87b sitting.
  • the drive system 80 further comprises an electronic control device 91 for controlling the control valve device 86.
  • Position signals generated by the position detection device 90 can be transmitted in particular wirelessly to the electronic control device 91, which in turn drives the control valve device 86.
  • the electronic control device 91 has electronic control means 92 which are designed such that the control valve device 86 is switchable so that the pressurized working chamber 19a, 19b is vented before the system pressure builds up in the working chamber 19a, 19b when the position detecting device 90 detects one of the end positions 87a, 87b.
  • the electronic control device 91 with its control means is located in the same position. if arranged in the functional module 17, for example in the module space 21 next to the control valve 88.
  • FIG. 3 shows a second exemplary embodiment of the drive system 80 according to the invention. This embodiment differs from the first exemplary embodiment described above in that the position detection device 90 with the magnet arrangement 34 and the position indicator 36 are positioned elsewhere than in the first exemplary embodiment.
  • the position indicator 36 is inserted into the upper wall portion 35 of the tubular body 44 of the housing 1, while the magnet assembly 34 is disposed at the axial end of the output shaft 6 and receives a rotational movement of the output shaft 6.
  • the position indicator 36 is inserted into a Aufnähmeklammer 38 formed in the upper wall portion 35 of the tubular body 44, which is open to an end face 3 and / or a longitudinal side 46 of the tubular body 44.
  • a position indicator 23 is attached, which has a mark in the form of a bow-shaped indicator member 39 which in the position shown in Figures 1 and 3, the closed position of the valve member and in a rotated by 90 ° thereof position indicates the open position of the valve member.
  • a method of operating the fluid operated rotary actuator 10, which is part of the previously described drive system 80, is as follows: First, there is the valve member, in particular the ball valve in the closed position, which is indicated by the position indicator 23 with the bow-shaped display element 39. In order to move the valve member, for example the ball valve in the open position and thus to release the fluid passage through the medium channel 82, the second working chamber IIb is vented between the two drive pistons 19a, 19b via a corresponding switching operation of the control valve. Pressure fluid thus reaches the second working chamber IIb and causes the two drive pistons 19a, 19b to execute an opposite movement in the direction of their respective second end position 87b.
  • the opposing linear movements of the drive piston 19a, 19b are transmitted via the racks of the drive piston 19a, 19b to the output gear 29, which is set in rotational motion.
  • the coupled spindle is also set in rotary motion and transmits this rotational movement to the coupled valve member, such as the ball valve.
  • An essential aspect of the invention is that the two drive pistons 19a, 19b moving in opposite directions retract into the end positions 87b even at an actuating pressure that is considerably lower than the system pressure of 5.5 to 6 bar, for example in the range from 2 to 3 bar, which causes the Valve member has also moved into the open position.
  • the through-channel at the ball valve is aligned with the medium channel, whereby the medium channel for the process medium is released. No reaction force is exerted on the ball valve by the process medium.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Fluid-Driven Valves (AREA)

Abstract

Dans un système d'entraînement comprenant un entraînement en rotation à commande fluidique (10) qui comporte un boîtier (1) pourvu d'une chambre de piston (11) dans laquelle est disposé un dispositif formant piston d'entraînement (19) destiné à entraîner un arbre de sortie (6) monté à rotation, le dispositif formant piston d'entraînement (19) divisant la chambre de piston (11) en au moins deux chambres de travail (11a, 11b) qui sont soumises par l'intermédiaire d'un dispositif formant soupape de commande (86) à un fluide à la pression de système de sorte que le dispositif formant piston d'entraînement (19) peut être déplacée dans une première ou une second position d'extrémité (87a, 87b) en fonction la pression de fluide exercée de l'une ou l'autre chambre de travail (11a, 11b), et comprenant un moyen de détection de position (90) destiné à détecter les positions d'extrémité (87a, 87b) et à produire des signaux de position qui sont associés aux positions d'extrémité (87a, 87b) et qui peuvent être transmis à un dispositif de commande électronique associé (91) pour commander le dispositif formant soupape de commande (86), le dispositif de commande électronique dispose de moyens de commande électroniques qui sont conçus de telle sorte que le dispositif formant soupape de commande (86) peut être commuté de telle sorte que la chambre de travail (11a, 11b), soumise au fluide sous pression, est purgée avant que la pression de système s'établisse dans la chambre de travail (11a, 11b) lorsque le dispositif de détection de position (86) détecte une des positions d'extrémité (87a, 87b).
PCT/EP2015/063332 2015-06-15 2015-06-15 Système d'entraînement et procédé pour faire fonctionner un entraînement en rotation à commande fluidique WO2016202356A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/EP2015/063332 WO2016202356A1 (fr) 2015-06-15 2015-06-15 Système d'entraînement et procédé pour faire fonctionner un entraînement en rotation à commande fluidique
DE112015006510.5T DE112015006510A5 (de) 2015-06-15 2015-06-15 Antriebssystem und Verfahren zum Betreiben eines fluidbetätigten Drehantriebs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2015/063332 WO2016202356A1 (fr) 2015-06-15 2015-06-15 Système d'entraînement et procédé pour faire fonctionner un entraînement en rotation à commande fluidique

Publications (1)

Publication Number Publication Date
WO2016202356A1 true WO2016202356A1 (fr) 2016-12-22

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PCT/EP2015/063332 WO2016202356A1 (fr) 2015-06-15 2015-06-15 Système d'entraînement et procédé pour faire fonctionner un entraînement en rotation à commande fluidique

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Country Link
DE (1) DE112015006510A5 (fr)
WO (1) WO2016202356A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018228705A1 (fr) * 2017-06-16 2018-12-20 Festo Ag & Co. Kg Dispositif de commande de processus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0067934A2 (fr) * 1981-04-29 1982-12-29 Univer S.R.L. Dispositif économiseur d'air comprimé
EP0089881A2 (fr) * 1982-03-19 1983-09-28 Legris-Société Anonyme dite Dispositif économiseur d'air comprimé
EP0853730A1 (fr) * 1995-10-02 1998-07-22 Pos-Line Ab Procede et appareil a soupape permettant de commander un engin a moteur de type va-et-vient entraine par un fluide
US6135147A (en) * 1998-06-05 2000-10-24 Topworx, Inc. Integrated valve control and monitoring assembly
JP2003120608A (ja) * 2001-10-12 2003-04-23 Nok Corp 揺動アクチュエータ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0067934A2 (fr) * 1981-04-29 1982-12-29 Univer S.R.L. Dispositif économiseur d'air comprimé
EP0089881A2 (fr) * 1982-03-19 1983-09-28 Legris-Société Anonyme dite Dispositif économiseur d'air comprimé
EP0853730A1 (fr) * 1995-10-02 1998-07-22 Pos-Line Ab Procede et appareil a soupape permettant de commander un engin a moteur de type va-et-vient entraine par un fluide
US6135147A (en) * 1998-06-05 2000-10-24 Topworx, Inc. Integrated valve control and monitoring assembly
JP2003120608A (ja) * 2001-10-12 2003-04-23 Nok Corp 揺動アクチュエータ

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018228705A1 (fr) * 2017-06-16 2018-12-20 Festo Ag & Co. Kg Dispositif de commande de processus
US11225982B2 (en) 2017-06-16 2022-01-18 Festo Se & Co. Kg Process control device

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