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WO1990005260A1 - Systeme d'entrainement commande avec actuateur et garniture pour ce systeme d'entrainement - Google Patents

Systeme d'entrainement commande avec actuateur et garniture pour ce systeme d'entrainement Download PDF

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Publication number
WO1990005260A1
WO1990005260A1 PCT/EP1989/001318 EP8901318W WO9005260A1 WO 1990005260 A1 WO1990005260 A1 WO 1990005260A1 EP 8901318 W EP8901318 W EP 8901318W WO 9005260 A1 WO9005260 A1 WO 9005260A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
cylinder
input
drive according
valve
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/EP1989/001318
Other languages
German (de)
English (en)
Inventor
Reinhard KÖNIG
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO1990005260A1 publication Critical patent/WO1990005260A1/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
    • F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/363—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor the fluid acting on a piston
    • 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
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/10—Characterised by the construction of the motor unit the motor being of diaphragm type

Definitions

  • the invention relates to a controllable drive with an actuator according to the preamble of independent patent claim 1.
  • Such drives have a wide range of uses and are used, for example, in process engineering, in power plant technology or for heating mixers, etc. Many systems are equipped with a large number of such drives, which have to be controlled individually and independently of one another.
  • These known drives have a motor supplied with external energy, for example an electric motor, with which, for example, control valves are moved. In systems with many drives, the installation effort and the energy consumption are very high.
  • the known drives also work with a comparatively large hysteresis, which is further increased by further translation elements.
  • a drive is known from BE-A-523626 which requires little external energy. However, this requires an exit to the environment and is not suitable for a line carrying a liquid medium.
  • the invention has for its object - to create a drive of this type, which avoids the disadvantages mentioned above and which is functionally reliable with a simple structure and is particularly suitable for lines with a liquid medium.
  • the invention uses as a source of energy a media difference, such as is present for example in a valve before and after this in a line.
  • a motor with external energy and the necessary installation is not required for the drive according to the invention.
  • the valve can be moved in the desired direction in a simple manner, for example with digital pulses from a computer.
  • the control command is preferably transmitted to the drive by means of magnetic currents.
  • the tax officer is preferably transmitted to the drive by means of magnetic currents.
  • REPLACEMENT LEAF from the outside in the form of a positive or negative direct current pulse. Signaling with radio, superimposed high-frequency signals or via light guides is also possible.
  • the drive can be moved to any position with just three pulses. Since the principle of the drive is based on an existing pressure difference and a media quantity shift that can be triggered thereby, an accuracy in the range of i / 100 and 1/1000 mm is possible. Accuracy is achieved through an exact metering of the amount of media per unit of time, which flows from one cylinder chamber to the other.
  • the drive can be manufactured in a very compact manner and without external hose connections and the like and can therefore be assembled and disassembled quickly and easily.
  • the drive can be used in a variety of ways, for example as a pressure difference controller, as a flow controller or flow meter and as a constant quantity controller. Since the drive works quietly, it is particularly suitable for a flush valve in a toilet facility. A special measuring device may not be required. With a stop in the cylinder, the drive can be designed in a simple manner so that the stroke is adjustable.
  • the requirements for surface processing, the inside of the cylinder housing are low, so that the cylinder housing can be cast inexpensively for its manufacture.
  • the roll membrane can be made of rubber and is reinforced with a fabric at higher pressure differences.
  • the switch or the hydraulic relay is arranged in the pressure chamber of the cylinder, the housing of the relay is only comparatively small. Exposed to pressure difference and can be manufactured inexpensively from plastic.
  • Fig. 3 seen a view of the changeover part in the direction of arrow III in Fig. 2.
  • REPLACEMENT LEAF 4 is a partial view of the valve body of a pilot valve
  • Fig. 8 shows a drive corresponding to Fig. 6, but with the piston in the other end position.
  • the drive shown in FIG. 1 has two connections 27 and 28 with which it is connected to a line 38.
  • a valve with a valve seat 26 and a valve cone 24 is attached in the flow passage 37 of the line 38.
  • the pressure P * L before the valve seat 26 is greater than the pressure P2 after the valve seat.
  • connection 23 which leads to a cylinder chamber which is only open to the inside of the line 38.
  • This chamber is formed by a connecting part 18, a cylindrical housing 8 and a cover 5. These parts are screwed together and sealed against one another by means of sealing rings 6, 17 and 22.
  • the cylinder housing 8 is detachably connected to the connecting part 18.
  • a piston 25 is arranged in the cylinder housing 8 and divides the chamber into an upper chamber 30 and a lower chamber 40.
  • the piston 25 is on its circumference with a tubular roller membrane 15 against the inside of the
  • REPLACEMENT LEAF Sealed housing 8 A piston rod 16 projecting downwards is attached to the piston 25, through which a channel 33 and a channel 39 lead.
  • the channel 33 opens in the direction of flow 37 in front of the valve seat 26 into the interior of the line 38 and here takes up the higher pressure P 1.
  • Radial connecting bores 31 and 32 lead from the channel 33 to the rolling membrane 15 or to a rolling membrane 19 attached to the piston rod.
  • the higher pressure P prevailing inside the rolling membranes presses the rolling membrane 15 and 19 against the inside of the cylinder housing 8 or the inner side of the connecting part 18.
  • the closed roll membranes 15 and 19 each seal the space in front of the roll membrane against the space behind the roll membrane.
  • roller membranes 15 and 19 combine the advantage of the lowest and therefore the highest differential pressure sensitivity with high insensitivity to the quality and quality of the cylinder, piston and piston rod wall. In this use, their independence from absolute pressure is also advantageous. The local independence to flange connections sw is also advantageous.
  • the channel 33 leads from a lower mouth 29 to a connection 13 to which a flexible hose (not shown here) is connected, which leads to an input E, a hydraulic relay 70 with a valve cone 9 and
  • a switching part 11 leads.
  • the input E leads through a bore in the housing 12 to a valve seat 26 which cooperates with the cone 9a of the valve cone 9.
  • This cone 9a is firmly connected to a control plate 9b, which is made of magnetizable but not premagnetized metal. If a control signal in the form of a current pulse is now set in a magnet 1, a magnetic field is generated and the control plate 9b is pulled upward regardless of the polarity of the magnetic field. With the control plate 9b, the valve cone 9a is also moved upward and the flow of the medium through the inlet 1 is thus released.
  • a flow occurs in a chamber 34, which flows through an outlet A.
  • the switching part 11 has a polarized permanent magnet 10, which is attracted or repelled depending on whether it is opposed by the north or south pole generated by the control command.
  • the changeover part 11 is also moved upward into a position not shown here. In this position, input E 1 is connected to output A-.
  • the outlet A 2 leads via the hose 53 into the lower chamber 40. In this case, the lower piston side 42 is thus subjected to the higher pressure P.
  • input E is connected to output A. The liquid displaced from the chamber 30 can thus be discharged through the channel 39 into the line 38.
  • the control command comes from the outside in the form of a positive or negative direct current pulse and goes to an electromagnet 1 attached to the outside of the drive, which in turn generates a polarized magnetic flux generated by the current pulse. Via a core 3 passing through the cover 5, the magnetic current is conducted into the hydraulic relay in the interior of the drive, where the switching functions mentioned above are then carried out. If there is no signal, this means "Step".
  • a stop signal is set, the piston 25 remains exactly where it is.
  • two further signals can be set, which are also magnetically transmitted by magnetic fields with defined north or south poles. These defined magnetic fields move the changeover part 11, which has a polarized permanent magnet 10, upwards or downwards accordingly. If the current pulse in the magnet 1 is interrupted, the magnetic field is reduced and the valve cone 9a is pressed into the closed position by a compression spring 7. The flow through inlet E at the hydraulic pilot valve is thus interrupted, and pressure equalization occurs in chambers 30 and 40, causing piston 25 to stop immediately. The drive can thus be moved into any position with three pulses. Depending on requirements, the drive according to the invention can also be equipped with several stages, ie with several pistons.
  • a hydraulic relay 70 is required for the control function.
  • This has a disc 65 which is rotatably mounted on the cover 5 about an axle 66.
  • Two magnets 63 and 64 are fastened on the disk 66 at a distance from the axle journal 66 and can be displaced by rotating the disk 65 in such a way that a magnet 63 or 64 is located above the hydraulic relay 70.
  • the relay 70 When the disc 65 is in position, the relay 70 is exposed to a magnetic south pole, a magnetic north pole or no influencing magnetic field.
  • Figures 6 to 8 show a variant of the drive, which is even simpler in construction. It is also important here that in a valve body 105, before and after a constriction 130 in the valve seat 120, a higher pressure P ⁇ and a lower pressure P2 of the medium are used to move a piston 103.
  • an open chamber 123 is provided, which is permanently connected to the medium with the lower pressure P2 via a channel 122.
  • a closed chamber 124 can now optionally be connected via a channel 121 to the medium area with the pressure 2 or via the channel 122 to the medium area with the pressure P --_.
  • control valves A and B each of which has an electrical coil 106, a magnetic core housing 108, a compression spring 12, a magnetic core 7 with a rubber seat 113 and a seat shown on a larger scale in FIGS. 7a and 7b 109 have.
  • the two seats 109 are each firmly connected at the upper end with spring washers 115 to an upper housing part 102. With the lower end, the seats 109 engage in bores 123 and 128 of the piston 103 and are slidably sealed against the piston with O-rings 116.
  • the seats 109 each have a through hole 109a which is closed by the rubber seat 113 when the coil 106 is not energized and is continuous for the medium when the coil 106 is excited and the rubber seat 113 is thus lifted off.
  • the medium can flow through the channel 121 or 122, through the bore 123 or 128 and the bore 109a and through lateral recesses 109c in the upper part of the seat 109 into the closed chamber 124.
  • valve body 105 is screwed to the housing body 101 via an adapter 104.
  • the piston 103 has a shaft 124 which, with a lower opening 125 of the channel 121 in each position of the piston 103, projects through the valve seat 120 into the medium with the higher pressure P-j_.
  • the piston 103 is sealed with a roller membrane 110 against the housing cover 101.
  • the roller membrane 110 is open.
  • the tubular membrane 110 is connected at its edges to the piston 103 and the housing body 101 by means of steel spring rings 126.
  • the diaphragm 110 is placed on the piston 103 in a groove in which it is held pressure-tight by the built-in steel spring 126.
  • the membrane 110 is open to the system break P2. It is now essential that the membrane 110 by a large
  • REPLACEMENT LEAF Pressure surface 110a to the wall of the housing body 101 keeps itself in position. This seal is particularly easy to attach and causes only very little resistance when the piston moves.
  • the drive according to the invention is based on using the pressure differences in the medium before and after the constriction 130 in the valve seat 120.
  • the control valve A In order to move the piston 103 upward from the position according to FIG. 6 and thus to open the valve, the control valve A is opened and therefore the closed chamber 124 is connected to the medium region with the lower pressure. Since the higher pressure Pi prevails in the open chamber 123, the piston 103 is moved upward against the force of a compression spring 111. By closing the control valve A, the piston 103 can be held in any intermediate position. If the control valve A remains open, the piston 103 moves into the end position shown in FIG. 8. If this end position has not yet been reached, P2 is connected to the closed chamber 124 and passes through the inner channel of the piston 103, via the bore 109a in the seat 109 and laterally past the seat 109 to the chamber 124. The end position is now this connection
  • REPLACEMENT LEAF interrupted by a rubber pad 117 of the piston 103.
  • a pressure equalization now forms in the closed chamber 124 and thus protects the membrane 110 from excessively high pressure differences. This safety function protects the Membr 110 from damage caused by high pressure differences in the two chambers.
  • the control valve B In order to move the piston 103 from the end position according to FIG. 8, the control valve B is opened when the control valve A is closed.
  • the closed chamber 124 like the open chamber, is now in communication with the pressure * L. The same pressure therefore prevails in both chambers, so that the piston 103 is moved downward by the compression spring 111 in the view according to FIG. 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Actuator (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

Un piston (25) relié de manière fixe avec un cône de soupape (24) est agencé dans un cylindre (5, 8). Ce cône de soupape (24) coopère avec un siège de soupape (26) à l'intérieur d'une conduite (38). On peut, grâce à un relais hydraulique (70), soumettre les faces latérales (42, 43) du piston (25) soit à la pression relativement plus élevée (P1) qui règne en amont du siège de soupape (26), soit à la pression relativement plus basse (P2) qui règne en aval du siège de soupape (26). Selon la pression à laquelle il est soumis, le piston (25) se déplace vers le haut ou vers le bas. Les commandes sont transmises par des courants magnétiques à la soupape pilote. Elles se présentent sous forme d'une impulsion positive ou négative de courant continu, qui est dirigée sur un électro-aimant (1), qui à son tour produit un flux magnétique polarisé généré par l'impulsion de courant. Le courant magnétique est dirigé, en passant par un noyau (3), vers l'intérieur du système d'entraînement, où les différentes opérations de commutation sont ensuite exécutées par le déplacement d'un cône de soupape (9) et d'un élément de commutation (11). L'étanchéification du piston (25) et de la tige de piston (26) par rapport à la face interne du cylindre se fait à l'aide de membranes enroulées fermées (15, 19) dont la partie interne est reliée à la pression la plus élevée (P1) qui comprime la membrane enroulée contre les parois du cylindre.
PCT/EP1989/001318 1988-11-03 1989-11-03 Systeme d'entrainement commande avec actuateur et garniture pour ce systeme d'entrainement Ceased WO1990005260A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4094/88-6 1988-11-03
CH409488 1988-11-03

Publications (1)

Publication Number Publication Date
WO1990005260A1 true WO1990005260A1 (fr) 1990-05-17

Family

ID=4269712

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1989/001318 Ceased WO1990005260A1 (fr) 1988-11-03 1989-11-03 Systeme d'entrainement commande avec actuateur et garniture pour ce systeme d'entrainement

Country Status (4)

Country Link
EP (1) EP0404892A1 (fr)
JP (1) JPH04500996A (fr)
AU (1) AU4629889A (fr)
WO (1) WO1990005260A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5563258A (en) * 1990-08-31 1996-10-08 Chugai Seiyaku Kabushiki Kaisha Sucralfate aqueous suspension and its method of preparation
EP3679282B1 (fr) 2017-09-07 2022-01-26 Neoperl GmbH Ensemble soupape

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE523626A (fr) *
FR719992A (fr) * 1931-07-11 1932-02-13 Alex Turnbull & Company Ltd So Perfectionnements aux soupapes d'arrêt à fermeture rapide
US2634754A (en) * 1948-12-27 1953-04-14 Oil Ct Tool Company Pilot controlled fluid pressure operated valve
CH328195A (fr) * 1955-05-13 1958-02-28 Renault Vérin pneumatique différentiel
US3373694A (en) * 1965-10-21 1968-03-19 John F. Taplin Cylinder and piston unit having noncollapsible dual rolling diaphragm
US3410518A (en) * 1966-05-11 1968-11-12 Aquamation Inc Fluid motor operated valve with manually adjustable cylinder

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE523626A (fr) *
FR719992A (fr) * 1931-07-11 1932-02-13 Alex Turnbull & Company Ltd So Perfectionnements aux soupapes d'arrêt à fermeture rapide
US2634754A (en) * 1948-12-27 1953-04-14 Oil Ct Tool Company Pilot controlled fluid pressure operated valve
CH328195A (fr) * 1955-05-13 1958-02-28 Renault Vérin pneumatique différentiel
US3373694A (en) * 1965-10-21 1968-03-19 John F. Taplin Cylinder and piston unit having noncollapsible dual rolling diaphragm
US3410518A (en) * 1966-05-11 1968-11-12 Aquamation Inc Fluid motor operated valve with manually adjustable cylinder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5563258A (en) * 1990-08-31 1996-10-08 Chugai Seiyaku Kabushiki Kaisha Sucralfate aqueous suspension and its method of preparation
EP3679282B1 (fr) 2017-09-07 2022-01-26 Neoperl GmbH Ensemble soupape

Also Published As

Publication number Publication date
EP0404892A1 (fr) 1991-01-02
AU4629889A (en) 1990-05-28
JPH04500996A (ja) 1992-02-20

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