EP0966628B1 - Wegeventil - Google Patents
Wegeventil Download PDFInfo
- Publication number
- EP0966628B1 EP0966628B1 EP19980920466 EP98920466A EP0966628B1 EP 0966628 B1 EP0966628 B1 EP 0966628B1 EP 19980920466 EP19980920466 EP 19980920466 EP 98920466 A EP98920466 A EP 98920466A EP 0966628 B1 EP0966628 B1 EP 0966628B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- travel sensor
- sensor tube
- directional
- control valve
- 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.)
- Expired - Lifetime
Links
Images
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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
- F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
- F15B2013/004—Cartridge valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
- F15B2013/0409—Position sensing or feedback of the valve member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F2007/1684—Armature position measurement using coils
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8158—With indicator, register, recorder, alarm or inspection means
- Y10T137/8225—Position or extent of motion indicator
- Y10T137/8242—Electrical
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86574—Supply and exhaust
- Y10T137/86582—Pilot-actuated
- Y10T137/86614—Electric
Definitions
- the invention relates to a directional valve with axial in the valve housing interior sliding control piston and one attached to the valve housing to Detecting the position of the control piston serving transducer, the one on has an end pressure-sealed end transducer tube, in the Immersed in the opening at the other end, a displacement sensor, on the control piston is attached and in the direction of its axial displacement a connecting the valve housing interior with the displacement transducer tube Passage extends through.
- Valves of this type are known.
- a proportional cartridge valve manufactured by the applicant This type is for example under the name 3WRC available in the stores.
- Such valves are preferably used for control or control of large pressure oil volume flows, e.g. forge manipulators, Press cylinders, die casting machines and the like.
- the known generic valves are characterized by a simple design because thanks to its pressure-tight design, the displacement transducer can Passage of the valve housing is attachable, through which the Displacement rod out of the valve housing interior into the opening of the Displacement tube extends into it. Because with this type of the in the passage prevailing consumer pressure also in the pressure-tight displacement transducer tube is effective, however, there is a risk that in cases where there is consumer pressure high pressure peaks with steep rising edges occur, it is too plastic Widening of the pressure-tight displacement transducer tube can come. this leads to often to disturbances in position detection, especially when using of inductive displacement sensors on the displacement sensor tube put on bobbin, the winding can tear, which leads to failure the associated control electronics and thus the valve leads.
- the invention has for its object to a directional control valve of the type mentioned create that, on the other hand, is characterized by increased operational reliability.
- This task is according to the invention with a directional valve at the beginning mentioned type by a in the passage between the valve housing interior and the opening of the displacement transducer provided one Damping gap released seal that an oil flow into the Throttle position allowing the transducer tube into it.
- the throttling of the oil flow into the displacement transducer provided according to the invention dampens that occurring at a pressure peak in consumer pressure Compression volume flow in the direction of the displacement sensor so strong that the Pressure increase in the displacement transducer no longer leads to plastic deformations of the pipe and thus impair the function of the position detection of the displacement sensor.
- the one in the passageway Sealing which forms the damping gap, also an oil flow check valve blocking the displacement transducer tube. This can cause oil, this when the displacement sensor moves into the displacement transducer tube is displaced into the valve housing interior via the check valve flow back so that the occurrence of compression pressure peaks in the Displacement tube due to immersion movements of the displacement sensor is avoided.
- the damping gap is preferably on the valve body of the check valve intended.
- this valve body can formed as a perforated disc having a central through hole be the one with its side facing the displacement transducer serving as a valve seat surface, formed on a shoulder of the passage Shoulder surface interacts and with its through hole on the encoder rod is performed with a game forming the damping gap.
- a built-in directional control valve designated as a whole by 1 in FIG. 1, has a valve housing 3 on, in which a control piston 5 in the axial direction, based on the Housing longitudinal axis 7, is slidable to a stepless in 3/2-way function Regulation of a pressure oil volume flow from the pressure oil connection P to To effect consumer connection A and from connection A to tank connection T.
- Control connections for the control of the directional valve by means of a pilot valve 9 are designated by 11 and 13 in FIG. 1.
- a control electronics 15 is provided, which in the usual Formed and therefore not shown and described in detail is.
- the control electronics 15 is in the housing of an inductive displacement sensor 17 housed, which is flanged to the valve housing 3 and via the control electronics 15 forms part of a position control loop.
- the displacement sensor 17 is connected to the valve housing 3 via an intermediate piece 19 connected, which is a passage 21 from the adjacent valve housing interior 23 to the facing opening 25 a displacement transducer tube 27 which forms at its opening 25 (FIG. 2) opposite end 29 is completed pressure-tight.
- a displacement transducer tube 27 which forms at its opening 25 (FIG. 2) opposite end 29 is completed pressure-tight.
- the Weggeberstab 33 consists in a known manner of an essentially non-magnetic Core support rod, at the front end of which a soft iron rod is welded, which as a ferromagnetic core with the winding of the bobbin 31 for path-dependent influencing of the inductance interacts.
- this damping device is performed by a passage 21 provided seal that the passage 21 except for a damping gap completes that a throttle point for the oil flow in the displacement transducer 27th forms.
- the Damping gap formed on a perforated disc 37, the central Through hole 39 is mounted on the displacement rod 33.
- the inside diameter of the through hole 39 is slightly larger than the outer diameter of the displacement rod 33 to between this and the inner wall of the through hole 39 to form the damping gap.
- Spring element which in the exemplary embodiment consists of disc springs 43, clamps the side of the perforated disk 37 facing the displacement transducer tube 27 for abutment on a shoulder surface 45, which by a paragraph of the Passage 21 is formed.
- the perforated disk 37 thus forms together with that acting as a valve seat surface
- Shoulder surface 45 is a check valve that allows oil to flow into the displacement tube 27 locks in except for the throttled oil flow through the damping gap passes.
- the displacement sensor 33 at a corresponding movement of the piston 5 into the displacement sensor tube 27 retracts and displaces a certain amount of oil, this in the forward direction drain the check valve formed, so that none by piston movement caused pressure peak occurs in the displacement transducer tube 27.
- the outer diameter the perforated disc 37 is slightly smaller than the inside diameter of the relevant one Section of the passage 21 so that the perforated disc 37 only on the Weggeberstab 33 is guided, what the friction forces acting on the perforated disc 37 and thus also reduces wear.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
Description
- Fig. 1
- einen teilweise schematisch vereinfacht gezeichneten Längsschnitt eines Ausführungsbeispieles des erfindungsgemäßen Wegeventils und
- Fig. 2
- einen in größerem Maßstab gezeichneten Ausschnitt aus Fig. 1, wobei der Bereich des Durchganges vom Ventilgehäuseinnenraum zum Wegaufnehmer gezeigt ist.
Claims (8)
- Wegeventil mit im Ventilgehäuseinnenraum (23) axial verschiebbarem Steuerkolben (5) und einem am Ventilgehäuse (3) angebrachten, zum Erfassen der Position des Steuerkolbens (5) dienenden Wegaufnehmer (17), der ein am einen Ende (29) druckdicht abgeschlossenes Wegaufnehmerrohr (27) aufweist, in dessen Öffnung (25) am anderen Ende ein Weggeberstab (33) eintaucht, der am Steuerkolben (5) befestigt ist und sich in der Richtung von dessen Axialverschiebung durch einen den Ventilgehäuseinnenraum (23) mit dem Wegaufnehmerrohr (27) verbindenden Durchgang (21) hindurch erstreckt, gekennzeichnet durch eine im Durchgang (21) zwischen dem Ventilgehäuseinnenraum (23) und der Öffnung (25) des Wegaufnehmerrohres (27) vorgesehene, einen Dämpfungsspalt freilassende Abdichtung (37), die eine einen Ölfluß in das Wegaufnehmerrohr (27) hinein zulassende Drosselstelle bildet.
- Wegeventil nach Anspruch 1, dadurch gekennzeichnet, daß eine völlige, nur leckagebehaftete Abdichtung vorgesehen ist, deren Leckage den gedrosselten Ölfluß in das Wegaufnehmerrohr (27) bildet.
- Wegeventil nach Anspruch 1, dadurch gekennzeichnet, daß die Abdichtung ein den Ölfluß in das Wegaufnehmerrohr (27) sperrendes Rückschlagventil (37, 43, 45) aufweist.
- Wegeventil nach Anspruch 3, dadurch gekennzeichnet, daß der Dämpfungsspalt am Ventilkörper (37) des Rückschlagventils vorgesehen ist.
- Wegenventil nach Anspruch 4, dadurch gekennzeichnet, daß als Ventilkörper eine ein zentrales Durchgangsloch (39) aufweisende Lochscheibe (37) vorgesehen ist, die mit ihrer dem Wegaufnehmerrohr (27) zugekehrten Seite mit einer als Ventilsitzfläche dienenden, an einem Absatz des Durchganges (21) ausgebildeten Schulterfläche (45) zusammenwirkt und mit ihrem Durchgangsloch (39) auf dem Weggeberstab (33) mit einem den Dämpfungsspalt bildenden Spiel geführt ist.
- Wegeventil nach Anspruch 5, dadurch gekennzeichnet, daß ein die Lochscheibe (37) zur Anlage an die Ventilsitzfläche (45) vorspannendes Federelement (43) vorhanden ist.
- Wegeventil nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß der Außendurchmesser der Lochscheibe (37) geringer ist als der Innendurchmesser des sie aufnehmenden Abschnittes des Durchganges (21).
- Wegeventil nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Wegaufnehmer (17) für eine induktive Erfassung der Position des Steuerkolbens (5) einen auf das Wegaufnehmerrohr (27) aufgesteckten Spulenkörper (31) mit einer Wicklung aufweist, deren Induktivität durch einen ferromagnetischen Kern des als Kernträger dienenden Weggeberstabes (33) beeinflußbar ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19710318 | 1997-03-13 | ||
DE1997110318 DE19710318A1 (de) | 1997-03-13 | 1997-03-13 | Wegeventil |
PCT/EP1998/001181 WO1998040652A1 (de) | 1997-03-13 | 1998-03-03 | Wegeventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0966628A1 EP0966628A1 (de) | 1999-12-29 |
EP0966628B1 true EP0966628B1 (de) | 2002-09-18 |
Family
ID=7823192
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19980920466 Expired - Lifetime EP0966628B1 (de) | 1997-03-13 | 1998-03-03 | Wegeventil |
Country Status (4)
Country | Link |
---|---|
US (1) | US6199585B1 (de) |
EP (1) | EP0966628B1 (de) |
DE (2) | DE19710318A1 (de) |
WO (1) | WO1998040652A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19856563A1 (de) | 1998-12-08 | 2000-06-15 | Mannesmann Rexroth Ag | Wegeventil |
JP3696075B2 (ja) * | 2000-10-06 | 2005-09-14 | Smc株式会社 | 磁気センサー付き切換弁 |
US6789570B2 (en) * | 2001-04-23 | 2004-09-14 | Hydraforce, Inc. | Hydraulic valve with a position sensor |
US7516693B2 (en) * | 2005-06-29 | 2009-04-14 | W.C. Bradley Company | Folding device for roasting poultry on a BBQ grill |
DE102007062384A1 (de) * | 2007-12-22 | 2009-06-25 | Robert Bosch Gmbh | Einrichtung mit integriertem Lagesensor |
NL2002209C2 (en) * | 2008-11-14 | 2010-05-17 | Asco Controls Bv | Solenoid valve with sensor for determining stroke, velocities and/or accelerations of a moveable core of the valve as indication of failure modus and health status. |
CN102536943B (zh) * | 2012-02-24 | 2015-06-17 | 徐州重型机械有限公司 | 一种平衡阀及设有该平衡阀的卷扬系统、起重机 |
DE102013014673A1 (de) * | 2013-09-04 | 2015-03-05 | Hydac Fluidtechnik Gmbh | Lasthalteventil |
DE102016102388A1 (de) * | 2016-02-11 | 2017-08-17 | Hoerbiger Automatisierungstechnik Holding Gmbh | Proportionalventil |
DE102016218407A1 (de) | 2016-09-26 | 2018-03-29 | Schaeffler Technologies AG & Co. KG | Hydraulisches Schaltelement |
DE102018208893A1 (de) | 2018-06-06 | 2019-12-12 | Robert Bosch Gmbh | Direktgesteuertes hydraulisches Wegeventil |
CN117167510B (zh) * | 2023-11-03 | 2024-01-09 | 南京亿准纳自动化控制技术有限公司 | 调节阀和流量调节系统 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3551620A (en) | 1969-03-14 | 1970-12-29 | Jimmie N Hoover | Flow,no-flow device |
DE3001886A1 (de) * | 1980-01-19 | 1981-07-23 | G.L. Rexroth Gmbh, 8770 Lohr | Hydraulisches steuer- und/oder messgeraet, insbesondere elektrisch steuerbares stromregelventil |
EP0073268B1 (de) * | 1981-09-02 | 1985-09-04 | Vickers Systems GmbH | Elektrohydraulische Regelung eines Stellkolbens |
DE3236636C2 (de) * | 1982-10-04 | 1986-05-07 | FAG Kugelfischer Georg Schäfer KGaA, 8720 Schweinfurt | Dichtung, insbesondere für Wälzlager |
EP0124242A3 (de) | 1983-03-31 | 1987-04-01 | Moog Controls Limited | Stellungsgeber |
DE3420400A1 (de) | 1984-06-01 | 1985-12-05 | Mannesmann Rexroth GmbH, 8770 Lohr | Zwei-wege-sitzventil |
US4593719A (en) * | 1984-11-30 | 1986-06-10 | Leonard Willie B | Spool valve |
DE3805288A1 (de) * | 1988-02-19 | 1989-08-31 | Rexroth Mannesmann Gmbh | Regelventil |
DE3829992A1 (de) * | 1988-09-03 | 1990-03-15 | Bosch Gmbh Robert | Proportionalventil |
DE9015899U1 (de) | 1990-11-22 | 1991-02-07 | SKF GmbH, 8720 Schweinfurt | Dichtungsring |
DE9205323U1 (de) * | 1992-04-16 | 1992-06-25 | Herion-Werke Kg, 7012 Fellbach | Vorrichtung zum Ansteuern elektrohydraulischer Ventile |
US5553827A (en) * | 1993-11-17 | 1996-09-10 | Alliedsignal Inc. | Low current electro-hydraulic metering module |
-
1997
- 1997-03-13 DE DE1997110318 patent/DE19710318A1/de not_active Withdrawn
-
1998
- 1998-03-03 US US09/380,855 patent/US6199585B1/en not_active Expired - Lifetime
- 1998-03-03 WO PCT/EP1998/001181 patent/WO1998040652A1/de active IP Right Grant
- 1998-03-03 EP EP19980920466 patent/EP0966628B1/de not_active Expired - Lifetime
- 1998-03-03 DE DE59805609T patent/DE59805609D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US6199585B1 (en) | 2001-03-13 |
DE59805609D1 (de) | 2002-10-24 |
EP0966628A1 (de) | 1999-12-29 |
WO1998040652A1 (de) | 1998-09-17 |
DE19710318A1 (de) | 1998-09-17 |
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