EP2650489A2 - Device for adjusting a rotary slide arranged in a housing - Google Patents

Device for adjusting a rotary slide arranged in a housing Download PDF

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Publication number
EP2650489A2
EP2650489A2 EP13155253.1A EP13155253A EP2650489A2 EP 2650489 A2 EP2650489 A2 EP 2650489A2 EP 13155253 A EP13155253 A EP 13155253A EP 2650489 A2 EP2650489 A2 EP 2650489A2
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EP
European Patent Office
Prior art keywords
bearing
rotary valve
housing
lever rod
rotary
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.)
Withdrawn
Application number
EP13155253.1A
Other languages
German (de)
French (fr)
Other versions
EP2650489A3 (en
Inventor
Rüdiger BACKASCH
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP2650489A2 publication Critical patent/EP2650489A2/en
Publication of EP2650489A3 publication Critical patent/EP2650489A3/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/148—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of rotatable members, e.g. butterfly valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00—Application
    • F05B2220/30—Application in turbines
    • F05B2220/301—Application in turbines in steam turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/31—Application in turbines in steam turbines

Definitions

  • the invention relates to a device for adjusting a arranged in a housing rotary valve according to the features of independent claim 1.
  • Rotary valves are used to control volume flows in many areas of technology.
  • rotary valves are used as adjustable control element for steam extraction in steam turbines.
  • Rotary valves are already well known in the art, such as from the DE 24 25 344 C2 , of the DE 42 14 775 A1 or from the DD-PS 73 0 42 ,
  • a rotary valve consists in principle of two successively arranged in a housing rings, one ring is designed as a fixed ring and the other as a rotatable ring. Both in the fixed and in the rotatable ring windows are formed, which can be brought by turning the rotatable ring more or less to cover, whereby a flow cross-section is more or less released.
  • the inventive device for adjusting a arranged in a housing rotary valve comprises two substantially mutually parallel coupling rods, which are each connected to a first side with the rotary valve and each with a second side, with two opposite sides of a lever rod, wherein the lever rod is rotatably mounted in a bearing between the two opposite sides, and wherein the bearing is arranged outside of the rotary valve and the lever rod is rotatable by means of a drive about the axis of rotation of the bearing, wherein depending on the direction of rotation of the rotary valve, the rotary valve in an open or in a closed position is movable.
  • the rotary valve via the coupling rods and the lever rod to a, outside the rotary valve, arranged bearing is hung.
  • the bearing can accommodate both the weight of the rotary valve and the reaction force of the rotary valve. This considerably reduces the required actuating forces for producing the rotary valve.
  • the bearing outside of the rotary valve housing (turbine housing) is arranged.
  • An advantageous embodiment of the invention provides that the coupling rods are arranged substantially tangentially, on opposite peripheral surfaces of the rotary valve. As a result, the leverage forces are particularly large and the required driving force of the drive can be kept as low as possible.
  • a further advantageous embodiment provides that the coupling rods are connected to the lifting rod via joints. As a result, a particularly simple coupling of coupling rods and lever rod is achieved.
  • a further advantageous embodiment of the invention provides that the bearing is a ball bearing.
  • the bearing does not come with the fluid flowing through the rotary valve in connection, which can be used in particular ball bearings, which significantly reduce the force of the device.
  • FIG. 2 shows only a highly simplified representation of the invention, in which only the essential components necessary for the invention are shown.
  • FIG. 1 A known from the prior art device for adjusting a arranged in a housing 6 rotary valve 1, is in FIG. 1 shown.
  • the device has an articulation point 8.
  • the articulation point 8 is connected by means of a coupling rod 2 with a drive 5.
  • the articulation point 8 is arranged on the rotary ring of the rotary valve 1.
  • the force F A (rotational force) generated by the drive 5 generates at the cylindrical contact surface 9 between the rotary ring and the fixed ring (pivot point) of the rotary valve 1 a radially acting reaction force F R and thus an additional frictional force.
  • FIG. 2 shows a plan view of an embodiment of a device according to the invention for adjusting a arranged in a housing 6 rotary valve.
  • the housing 6 can be, for example, the housing of a steam turbine.
  • the device comprises two coupling rods 2 which are guided essentially parallel to one another. The guidance of the coupling rods 2 can preferably take place through corresponding bores in the housing 6.
  • the coupling rods 2 are each coupled to the rotary valve 1 with a first side.
  • the rotary valve 1 on special articulation points 8, which are formed on the outer circumference of the rotary valve 1.
  • the coupling rods 2 With its second side, the coupling rods 2 are connected to two opposite sides of a lever rod 3.
  • the connection between the coupling rods 2 and the lever rod 3 takes place with low friction via special joints 7.
  • the coupling rod 2 and the lever rods 3 are preferably connected to each other at its outermost end in order to transmit the greatest possible leverage (torque).
  • the lever rod 3 is rotatably supported between the two opposite sides in a bearing 4, wherein the bearing 4 is arranged outside of the rotary valve 1.
  • the bearing 4 arranged outside of the housing 6. This makes it particularly accessible and protected against the fluid which flows through the rotary valve.
  • the ball bearing has the advantage that it is particularly low friction and thereby can significantly reduce the actuating forces.
  • the lever rod 3 and / or at least one coupling rod 2 is connected to a drive 5.
  • the drive 5 allows a rotation of the lever rod 3 about the axis of rotation of the bearing 4.
  • one of the two coupling rods 2 is pulled up and pressed the other coupling rod 2 down. This causes a rotation of the rotary ring of the rotary valve 1.
  • the rotary valve 1 is moved to an open or closed position.
  • the FIG. 2 shows the open position of the rotary valve 1, in which the windows in the rotatable disc are aligned with the windows of the stationary ring over one another.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Control Of Turbines (AREA)
  • Taps Or Cocks (AREA)

Abstract

The device has two coupling rods (2) guided parallel to each other. The rods are connected with a rotary slide (1) at a side, and with two opposite sides of a lever rod (3) at another side. The lever rod is rotatably mounted in a bearing (4) i.e. ball bearing, between the two opposite sides. The bearing is arranged outside the slide. The lever rod and/or the coupling rods are rotated around a rotational axis of the bearing by a drive (5). The slide is movable into an opened position or a closed position according to a rotational direction. The slide is suspended at the bearing by the rods.

Description

Die Erfindung betrifft eine Vorrichtung zur Verstellung eines in einem Gehäuse angeordneten Drehschiebers entsprechend den Merkmalen des unabhängigen Patentanspruchs 1.The invention relates to a device for adjusting a arranged in a housing rotary valve according to the features of independent claim 1.

Drehschieber werden zur Regelung von Volumenströmen in vielen Bereichen der Technik eingesetzt. Beispielsweise werden Drehschieber als einstellbares Regelorgan zur Dampfentnahme bei Dampfturbinen eingesetzt. Drehschieber sind im Stand der Technik bereits hinreichend bekannt, so beispielsweise aus der DE 24 25 344 C2 , der DE 42 14 775 A1 oder aus der DD-PS 73 0 42 .Rotary valves are used to control volume flows in many areas of technology. For example, rotary valves are used as adjustable control element for steam extraction in steam turbines. Rotary valves are already well known in the art, such as from the DE 24 25 344 C2 , of the DE 42 14 775 A1 or from the DD-PS 73 0 42 ,

Ein Drehschieber besteht prinzipiell aus zwei hintereinander in einem Gehäuse angeordneten Ringen, wobei ein Ring als Festring und der andere als drehbarer Ring ausgebildet ist. Sowohl im feststehenden als auch im drehbaren Ring sind Fenster ausgebildet, die durch Drehen des drehbaren Rings mehr oder weniger zur Überdeckung gebracht werden können, wodurch ein Strömungsquerschnitt mehr oder weniger freigegeben wird. Bei geschlossenen oder nur leicht geöffneten Drehschieber wirken hohe Druckkräfte auf den Drehschieber, wodurch beim Drehen des Drehrings hohe Reibkräfte zwischen dem feststehendem Ring und dem Drehring vorhanden sind, die zu überwinden sind. Zum Verstellen des Drehschiebers sind daher hohe Antriebskräfte erforderlich, die eine entsprechende Dimensionierung des Antriebs erfordern.A rotary valve consists in principle of two successively arranged in a housing rings, one ring is designed as a fixed ring and the other as a rotatable ring. Both in the fixed and in the rotatable ring windows are formed, which can be brought by turning the rotatable ring more or less to cover, whereby a flow cross-section is more or less released. When the rotary valve is closed or only slightly open, high pressure forces act on the rotary valve, as a result of which, when the rotary ring is rotated, there are high frictional forces between the stationary ring and the rotary ring which are to be overcome. To adjust the rotary valve therefore high driving forces are required, which require a corresponding dimensioning of the drive.

Um bei größeren Drehschiebern die notwendige Antriebskraft aufbringen zu können sind entsprechend groß dimensionierte Antriebe nötig. Bei zu großen erforderlichen Stellkräften kann es unter Umständen notwendig sein die Einsatzparameter (maximal zusätzliche Druckdifferenz) zu begrenzen.In order to be able to apply the necessary driving force with larger rotary valves, correspondingly large drives are required. With too much required restoring forces Under certain circumstances, it may be necessary to limit the operating parameters (maximum additional pressure difference).

Ausgehend vom Stand der Technik ist es somit Aufgabe der vorliegenden Erfindung, eine Vorrichtung zur Verstellung eines in einem Gehäuse angeordneten Drehschiebers auszubilden, bei dem die erforderlichen Stellkräfte reduziert sind.Starting from the prior art, it is therefore an object of the present invention to provide a device for adjusting a arranged in a housing rotary valve, in which the required actuating forces are reduced.

Die Aufgabe wird gelöst durch die Merkmale des unabhängigen Patentanspruchs 1.The object is solved by the features of independent claim 1.

Vorteilhafte Ausgestaltungen der Erfindung, die einzeln oder in Kombination miteinander einsetzbar sind, sind Gegenstand der Unteransprüche.Advantageous embodiments of the invention, which are used individually or in combination with each other, are the subject of the dependent claims.

Die erfindungsgemäße Vorrichtung zur Verstellung eines in einem Gehäuse angeordneten Drehschiebers, umfasst zwei im Wesentlichen parallel zueinander liegende Koppelstangen, die jeweils mit einer ersten Seite mit dem Drehschieber und jeweils mit einer zweiten Seite, mit zwei sich gegenüberliegenden Seiten einer Hebelstange verbunden sind, wobei die Hebelstange zwischen den zwei sich gegenüberliegenden Seiten drehbar in einem Lager gelagert ist, und wobei das Lager außerhalb des Drehschiebers angeordnet ist und die Hebelstange mittels eines Antriebs um die Drehachse des Lagers drehbar ist, wobei je nach Drehrichtung des Drehschiebers der Drehschieber in eine geöffnete oder in eine geschlossene Position bewegbar ist. Durch die erfindungsgemäße Vorrichtung wird der Drehschieber über die Koppelstangen und die Hebelstange an einen, außerhalb des Drehschiebers, angeordneten Lagers gehängt. Hierdurch kann das Lager sowohl die Gewichtskraft des Drehschiebers als auch die Reaktionskraft des Drehschiebers aufnehmen. Hierdurch verringern sich die erforderlichen Stellkräfte zum Herstellen des Drehschiebers erheblich.The inventive device for adjusting a arranged in a housing rotary valve comprises two substantially mutually parallel coupling rods, which are each connected to a first side with the rotary valve and each with a second side, with two opposite sides of a lever rod, wherein the lever rod is rotatably mounted in a bearing between the two opposite sides, and wherein the bearing is arranged outside of the rotary valve and the lever rod is rotatable by means of a drive about the axis of rotation of the bearing, wherein depending on the direction of rotation of the rotary valve, the rotary valve in an open or in a closed position is movable. By the device according to the invention, the rotary valve via the coupling rods and the lever rod to a, outside the rotary valve, arranged bearing is hung. As a result, the bearing can accommodate both the weight of the rotary valve and the reaction force of the rotary valve. This considerably reduces the required actuating forces for producing the rotary valve.

Bevorzugt ist das Lager außerhalb des Drehschiebergehäuses (Turbinengehäuses) angeordnet.Preferably, the bearing outside of the rotary valve housing (turbine housing) is arranged.

Eine vorteilhafte Ausgestaltung der Erfindung sieht vor, dass die Koppelstangen im Wesentlichen tangential, an gegenüberliegenden Umfangsflächen des Drehschiebers angeordnet sind. Hierdurch sind die Hebelkräfte besonders groß und die erforderliche Antriebskraft des Antriebs kann dadurch möglichst gering gehalten werden.An advantageous embodiment of the invention provides that the coupling rods are arranged substantially tangentially, on opposite peripheral surfaces of the rotary valve. As a result, the leverage forces are particularly large and the required driving force of the drive can be kept as low as possible.

Eine weitere vorteilhafte Ausgestaltung sieht vor, dass die Koppelstangen mit der Hebenstange über Gelenke verbunden sind. Hierdurch wird eine besonders einfache Kopplung von Koppelstangen und Hebelstange erreicht.A further advantageous embodiment provides that the coupling rods are connected to the lifting rod via joints. As a result, a particularly simple coupling of coupling rods and lever rod is achieved.

Eine weitere vorteilhafte Ausgestaltung der Erfindung sieht vor, dass das Lager ein Kugellager ist.A further advantageous embodiment of the invention provides that the bearing is a ball bearing.

Durch die Anordnung des Lagers außerhalb des Gehäuses kommt das Lager nicht mit dem durch den Drehschieber strömenden Fluides in Verbindung, wodurch sich insbesondere Kugellager einsetzen lassen, die die Stellkraft der Vorrichtung erheblich reduzieren.Due to the arrangement of the bearing outside the housing, the bearing does not come with the fluid flowing through the rotary valve in connection, which can be used in particular ball bearings, which significantly reduce the force of the device.

Weitere Vorteile und Ausgestaltungen der Erfindung werden nachfolgend anhand von Figur 2 erläutert.

Figur 1
zeigt ine Vorrichtung zur Verstellung eines in einem Gehäuse angeordneten Drehschiebers nach dem Stand der Technik;
Figur 2
zeigt ein Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung zur Verstellung eines in einem Gehäuse angeordneten Drehschiebers.
Further advantages and embodiments of the invention are described below with reference to FIG FIG. 2 explained.
FIG. 1
shows a device for adjusting a arranged in a housing rotary valve according to the prior art;
FIG. 2
shows an embodiment of a device according to the invention for adjusting a arranged in a housing rotary valve.

Die Figur 2 zeigt dabei lediglich eine stark vereinfachte Darstellung der Erfindung, bei der nur die wesentlichen zur Erfindung notwendigen Bauteile dargestellt sind.The FIG. 2 shows only a highly simplified representation of the invention, in which only the essential components necessary for the invention are shown.

Gleiche bzw. funktionsgleiche Bauteile sind in den Figuren mit den gleichen Bezugszeichen versehen.The same or functionally identical components are provided in the figures with the same reference numerals.

Eine aus dem Stand der Technik bekannte Vorrichtung zur Verstellung eines in einem Gehäuse 6 angeordneten Drehschiebers 1, ist in Figur 1 dargestellt. Die Vorrichtung weist einen Anlenkpunkt 8 auf. Der Anlenkpunkt 8 ist mittels einer Koppelstange 2 mit einem Antrieb 5 verbunden. Der Anlenkpunkt 8 ist am Drehring des Drehschiebers 1 angeordnet. Die durch den Antrieb 5 erzeugte Kraft FA (Drehkraft)erzeugt am der zylinderförmigen Kontaktfläche 9 zwischen Drehring und Festring (Drehpunkt) des Drehschiebers 1 eine radial wirkende Reaktionskraft FR und damit eine zusätzliche Reibkraft. Je größer die durch die Reibpaarung an der Kontaktfläche 9 (quer zur Rotationsachse des Drehschiebers) durch die Anpresskraft erzeugte Reibkraft sind, umso größer muss die notwendige Antriebskraft FA sein. Dies führt wiederum zu einer größeren Reaktionskraft im Drehpunkt. Zusätzlich wirkt ebenfalls radial, die Gewichtskraft FG des Drehringes.A known from the prior art device for adjusting a arranged in a housing 6 rotary valve 1, is in FIG. 1 shown. The device has an articulation point 8. The articulation point 8 is connected by means of a coupling rod 2 with a drive 5. The articulation point 8 is arranged on the rotary ring of the rotary valve 1. The force F A (rotational force) generated by the drive 5 generates at the cylindrical contact surface 9 between the rotary ring and the fixed ring (pivot point) of the rotary valve 1 a radially acting reaction force F R and thus an additional frictional force. The larger the friction force generated by the friction pairing on the contact surface 9 (transverse to the rotational axis of the rotary valve) by the contact force, the greater the necessary driving force F A must be. This in turn leads to a greater reaction force in the fulcrum. In addition, also acts radially, the weight F G of the rotary ring.

Figur 2 zeigt eine Draufsicht auf ein Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung zur Verstellung eines in einem Gehäuse 6 angeordneten Drehschiebers. Bei dem Gehäuse 6 kann es sich beispielsweise um das Gehäuse einer Dampfturbine handeln. Die Vorrichtung umfasst zwei im Wesentlichen parallel zueinander geführte Koppelstangen 2. Die Führung der Koppelstangen 2 kann vorzugsweise durch entsprechende Bohrungen im Gehäuse 6 erfolgen. Die Koppelstangen 2 sind jeweils mit einer ersten Seite mit dem Drehschieber 1 gekoppelt. Hierzu weist der Drehschieber 1 spezielle Anlenkpunkte 8 auf, die am äußeren Umfang des Drehschiebers 1 ausgebildet sind. Mit ihrer zweiten Seite sind die Koppelstangen 2 mit zwei sich gegenüberliegenden Seiten einer Hebelstange 3 verbunden. Die Verbindung zwischen den Koppelstangen 2 und der Hebelstange 3 erfolgt reibungsarm über spezielle Gelenke 7. Die Koppelstange 2 und die Hebelstangen 3 sind vorzugsweise an ihrem äußersten Ende miteinander verbunden, um eine möglichst große Hebelkraft übertragen zu können (Drehmoment). Die Hebelstange 3 ist zwischen den zwei sich gegenüberliegenden Seiten drehbar in einem Lager 4 gelagert, wobei das Lager 4 außerhalb des Drehschiebers 1 angeordnet ist. Vorzugsweise ist das Lager 4 außerhalb des Gehäuses 6 angeordnet. Hierdurch ist es besonders gut zugänglich und gegenüber dem Fluid welches den Drehschieber durchströmt, geschützt. Hierdurch lässt sich bevorzugt ein Kugellager verwenden. Das Kugellager hat den Vorteil, dass es besonders reibungsarm ist und sich hierdurch die Stellkräfte erheblich reduzieren lassen. FIG. 2 shows a plan view of an embodiment of a device according to the invention for adjusting a arranged in a housing 6 rotary valve. The housing 6 can be, for example, the housing of a steam turbine. The device comprises two coupling rods 2 which are guided essentially parallel to one another. The guidance of the coupling rods 2 can preferably take place through corresponding bores in the housing 6. The coupling rods 2 are each coupled to the rotary valve 1 with a first side. For this purpose, the rotary valve 1 on special articulation points 8, which are formed on the outer circumference of the rotary valve 1. With its second side, the coupling rods 2 are connected to two opposite sides of a lever rod 3. The connection between the coupling rods 2 and the lever rod 3 takes place with low friction via special joints 7. The coupling rod 2 and the lever rods 3 are preferably connected to each other at its outermost end in order to transmit the greatest possible leverage (torque). The lever rod 3 is rotatably supported between the two opposite sides in a bearing 4, wherein the bearing 4 is arranged outside of the rotary valve 1. Preferably, the bearing 4 arranged outside of the housing 6. This makes it particularly accessible and protected against the fluid which flows through the rotary valve. This makes it possible to use preferably a ball bearing. The ball bearing has the advantage that it is particularly low friction and thereby can significantly reduce the actuating forces.

Die Hebelstange 3 und/oder zumindest eine Koppelstange 2 ist mit einem Antrieb 5 verbunden. Der Antrieb 5 ermöglicht, eine Drehung der Hebelstange 3 um die Drehachse des Lagers 4. Durch die Drehung der Hebelstange 3 wird eine der beiden Koppelstangen 2 nach oben gezogen und die andere Koppelstange 2 nach unten gedrückt. Dies bewirkt eine Drehung des Drehrings des Drehschiebers 1. Je nach Drehrichtung der Drehscheibe des Drehschiebers 1 wird der Drehschieber 1 in eine geöffnete oder in eine geschlossene Position verfahren. Die Figur 2 zeigt die geöffnete Stellung des Drehschiebers 1, bei dem die Fenster in der drehbaren Scheibe fluchtend mit den Fenstern des feststehenden Ringes übereinanderliegen.The lever rod 3 and / or at least one coupling rod 2 is connected to a drive 5. The drive 5 allows a rotation of the lever rod 3 about the axis of rotation of the bearing 4. By the rotation of the lever rod 3, one of the two coupling rods 2 is pulled up and pressed the other coupling rod 2 down. This causes a rotation of the rotary ring of the rotary valve 1. Depending on the direction of rotation of the rotary disk of the rotary valve 1, the rotary valve 1 is moved to an open or closed position. The FIG. 2 shows the open position of the rotary valve 1, in which the windows in the rotatable disc are aligned with the windows of the stationary ring over one another.

Durch die "Aufhängung" der Hebelstange 3 wird die Gewichtskraft der Vorrichtung vom Lager 4 aufgenommen. Die Reaktionskraft des Drehschiebers 1 wird ebenfalls aus der Drehschiebeachse hinaus in den Drehpunkt des Lagers 4 verschoben. Durch die beschriebene Anlenkung des Drehschiebers 1 und die Aufhängung des Drehschiebers 1 außerhalb des Gehäuses wird die Radialkraft fast vollständig eliminiert, wodurch die notwendigen Stellkräfte deutlich verringert werden. Dadurch können die maximalen Parameter des Drehschiebers (maximale zusätzliche Druckdifferenz vor und hinter dem Drehschieber) erhöht werden bzw. die notwendige Antriebskraft reduziert werden, so dass deutlich kleinere und preiswertere Antriebe verwendet werden können.Due to the "suspension" of the lever rod 3, the weight of the device is absorbed by the bearing 4. The reaction force of the rotary valve 1 is also displaced out of the rotary sliding axis out into the pivot point of the bearing 4. By the described articulation of the rotary valve 1 and the suspension of the rotary valve 1 outside the housing, the radial force is almost completely eliminated, whereby the necessary actuating forces are significantly reduced. As a result, the maximum parameters of the rotary valve (maximum additional pressure difference before and after the rotary valve) can be increased or the necessary driving force can be reduced, so that significantly smaller and cheaper drives can be used.

Claims (5)

Vorrichtung zur Verstellung eines in einem Gehäuse (6) angeordneten Drehschiebers (1), umfassend zwei im Wesentlichen parallel zueinander geführte Koppelstangen (2), die jeweils mit einer ersten Seite mit dem Drehschieber (1) und jeweils mit einer zweiten Seite, mit zwei sich gegenüberliegenden Seiten einer Hebelstange (3) verbunden sind, wobei die Hebelstange (3) zwischen den zwei sich gegenüberliegenden Seite drehbar in einem Lager (4) gelagert ist, wobei das Lager (4) außerhalb des Drehschiebers (1) angeordnet und die Hebelstange (3) und/oder eine oder beide Koppelstangen (2) mittels eines Antriebs (5) um die Drehachse des Lagers (4) drehbar sind, wobei je nach Drehrichtung, der Drehschieber (1) in eine geöffnete oder in eine geschlossene Position bewegbar ist.Device for adjusting a rotary valve (1) arranged in a housing (6), comprising two coupling rods (2) guided essentially parallel to each other, each having a first side with the rotary valve (1) and each with a second side, with two opposite sides of a lever rod (3) are connected, wherein the lever rod (3) between the two opposite side is rotatably mounted in a bearing (4), wherein the bearing (4) outside of the rotary valve (1) arranged and the lever rod (3 ) and / or one or both coupling rods (2) by means of a drive (5) about the axis of rotation of the bearing (4) are rotatable, wherein, depending on the direction of rotation, the rotary valve (1) is movable into an open or in a closed position. Vorrichtung, nach Anspruch 1,
dadurch gekennzeichnet, dass
das Lager (4) außerhalb des Gehäuses (6) angeordnet ist.Device according to claim 1,
characterized in that
the bearing (4) outside the housing (6) is arranged. Vorrichtung, nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass
die Koppelstangen (2) im Wesentlichen tangential, an gegenüberliegenden Umfangsflächen des Drehschiebers (1) angeordnet sind.Device according to claim 1 or 2,
characterized in that
the coupling rods (2) are arranged essentially tangentially on opposite circumferential surfaces of the rotary slide valve (1). Vorrichtung, nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, dass
die Koppelstangen (2) mit der Hebelstange (3) über Gelenke (7) Verbunden sind.Device according to one of the preceding claims,
characterized in that
the coupling rods (2) with the lever rod (3) via joints (7) are connected. Vorrichtung, nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, dass
das Lager (4) ein Kugellager ist.Device according to one of the preceding claims,
characterized in that
the bearing (4) is a ball bearing.
EP13155253.1A 2012-04-12 2013-02-14 Device for adjusting a rotary slide arranged in a housing Withdrawn EP2650489A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012205980A DE102012205980B4 (en) 2012-04-12 2012-04-12 Device for adjusting a rotary valve arranged in a housing

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EP2650489A2 true EP2650489A2 (en) 2013-10-16
EP2650489A3 EP2650489A3 (en) 2017-07-26

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD73042A1 (en) 1968-09-27 1970-05-12 Slider for recuperation or top gas expansion turbines
DE2425344C2 (en) 1974-05-25 1976-09-09 Thomas Dipl-Ing Dip Hinckeldey METHOD AND DEVICE FOR SEPARATING PARTICLES FROM LIQUIDS WITH DIFFERENT DEGREES OF HEAT
DE4214775A1 (en) 1992-05-04 1993-11-11 Abb Patent Gmbh Steam turbine with a rotary valve

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