EP0482310B1 - Butterfly valve-driving for closure of smoke gas or discharge air conduits - Google Patents

Butterfly valve-driving for closure of smoke gas or discharge air conduits Download PDF

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Publication number
EP0482310B1
EP0482310B1 EP91113704A EP91113704A EP0482310B1 EP 0482310 B1 EP0482310 B1 EP 0482310B1 EP 91113704 A EP91113704 A EP 91113704A EP 91113704 A EP91113704 A EP 91113704A EP 0482310 B1 EP0482310 B1 EP 0482310B1
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EP
European Patent Office
Prior art keywords
lever
cylinder
piston
drive shaft
angle
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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.)
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EP91113704A
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German (de)
French (fr)
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EP0482310A1 (en
Inventor
Dieter Dipl.-Ing. Morlock
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Stober and Morlock Warmekraft GmbH
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Stober and Morlock Warmekraft GmbH
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L11/00Arrangements of valves or dampers after the fire
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N3/00Regulating air supply or draught
    • F23N3/007Regulating air supply or draught using mechanical means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00Valves, nozzles or pumps
    • F23N2235/02Air or combustion gas valves or dampers
    • F23N2235/04Air or combustion gas valves or dampers in stacks

Definitions

  • the invention relates to a damper actuator for butterfly valves for shutting off flue gas or exhaust air ducts, in particular ducts with large duct cross sections, with a drive unit for a drive shaft and with a tensioning lever mechanism between the drive shaft and a pivotably mounted butterfly valve, the drive unit being an angle lever attached to the drive shaft and has at least one cylinder piston arrangement articulated at a fixed point for actuating the angle lever.
  • a flap drive is e.g. known from DE-C-26 03 242.
  • Flap drives for butterfly valves which work with air or hydraulic motors which are operated from an air tank or from a bladder accumulator in the event of a power failure. Such flap drives are relatively expensive and often no longer functional after long downtimes.
  • a gear consisting of a rack and pinion is regularly inserted between the drive unit and the drive shaft.
  • Such a gearbox requires adequate lubrication if it is intended to avoid seizure between the rack and pinion even after often long downtimes.
  • a folding blind for closing a delivery line for hot gases consisting of a frame that can be installed in the delivery line and has a number of parallel axes rotatably mounted in it with louvre flaps attached to it, the flap axes protruding from and at least one end from the frame flap arms are attached to these ends, which are connected to one another and to an actuating device for the louvre flaps by a linkage running outside the delivery line.
  • the linkage has a series of auxiliary levers which are connected to the respective flap arms and are of equal length, which are each arranged with pivot pins running parallel to the flap axes in a support rail to be arranged outside the delivery line and each have an arm which has the same length as the assigned flap arm , with which it is connected by an actuating rod in such a length that the auxiliary lever arm runs parallel to the flap arm at a certain temperature condition of the frame.
  • the auxiliary levers are designed as toggle levers (cf. DE-C-26 03 242).
  • the invention has for its object to provide a damper actuator for butterfly valves of the type described above, which is characterized by an inexpensive construction and permanent functionality even after long downtimes.
  • the two cylinder piston arrangements can be operated from an air tank or a bladder accumulator in the event of a power failure.
  • the two lever arms of the angle lever form a 90 ° angle and the one lever arm is in the starting position in about 7 o'clock / 8 o'clock position and which has a cylinder piston arrangement with a retracted piston rod at the lever end of the a lever arm is articulated and is with its fixed point bearing on one side of the drive shaft, and that the other lever arm is in the starting position in the 10 o'clock / 11 o'clock position and the other cylinder piston arrangement is articulated with the extended piston rod on the lever end of the other lever arm and is in an inclined position with the piston rod crossing a lever arm and with its fixed point linkage on the other side of the drive shaft.
  • the invention further teaches that for the two cylinder piston assemblies, a valve control, each with a multi-way valve, for. B. 4/3-way valve, and a limit switch is provided for the one lever end and the other lever end of the angle lever, and that the positions of the limit switches the angle of rotation for the simultaneous application of the two cylinder piston assemblies or actuation of the two lever ends and consequently the stepless Specify the superposition of the torques.
  • a flap drive for a butterfly valve 1 for shutting off a flue gas duct 2 with a relatively large duct cross section is shown.
  • This flap drive has a drive unit 3 for a drive shaft 4 and a tensioning lever mechanism 5, which is arranged between the drive shaft 4 and the pivotably mounted butterfly valve 1.
  • the drive unit 3 has an angle lever 6, which is fixed in a rotationally fixed manner on the drive shaft, and two cylinder piston arrangements 7, 8.
  • the two cylinder piston assemblies 7, 8 are articulated on the lever ends 6a, 6b of the angle lever 6 and on fixed points 9, 10.
  • the two lever arms 11, 12 of the angle lever 6 form a 90 ° angle.
  • One lever arm 11 is in the starting position at about 7 o'clock / 8 o'clock position, the one cylinder piston arrangement 7 with the piston rod 13 retracted being articulated on the lever end 6 a of the one lever arm 11 and with its fixed point linkage 9 on one side of the drive shaft 4 - Based on a vertical axis M - guided by the drive shaft 4.
  • the other lever arm 12 is in the starting position - inevitably in the 10 o'clock / 11 o'clock position due to the 90 ° angle.
  • the other Cylinder-piston arrangement 8 is articulated with the extended piston rod 14 on the lever end 6b of the other lever arm 12 and is located in an inclined position with the piston rod 14 crossing a lever arm 11 and with its fixed point linkage 10 on the other side of the drive shaft 4 - again in relation to that through the drive shaft 4 guided vertical axis M.
  • the two fixed point linkages 9, 10 of the cylinder piston assemblies 7, 8 lie on the same plane.
  • the stroke of the two cylinder piston assemblies 7, 8 corresponds to a 180 ° rotation angle actuation of the respective lever arm or lever end of the angle lever 6 and consequently a 180 ° rotation movement of the drive shaft 4.
  • a valve control with a solenoid valve or 4/3-way valve 15, 16 and a limit switch 17, 18 is provided for one lever end 6a and the other lever end 6b of the angle lever 6.
  • the positions of the two limit switches 17, 18 specify the angle of rotation ⁇ for the simultaneous action on the two cylinder piston arrangements 7, 8 or actuation of the two lever ends and consequently for the stepless superimposition of the torques.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lift Valve (AREA)
  • Fluid-Driven Valves (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Air-Flow Control Members (AREA)
  • Air Supply (AREA)
  • Multiple-Way Valves (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

The invention relates to a flap drive for shut-off flaps for shutting off flue gas ducts of large cross section. This flap drive has an angle lever (6) arranged on the drive shaft (4) for the respective shut-off flap (1), which lever is operated by two cylinder/ piston arrangements (7, 8), the piston rods (13, 14) of which are articulated on one or the other lever end (6a, 6b) on the one hand and at fixed points (9, 10) on the other hand. In this way a high torque is successfully transmitted and a 180 DEG rotary movement produced although the cylinder/piston arrangements (7, 8) are simple low-cost linear cylinders. <IMAGE>

Description

Die Erfindung betrifft einen Klappenantrieb für Absperrklappen zum Absperren von Rauchgas- oder Abluftkanälen, insbesondere von Kanälen mit großen Kanalquerschnitten, mit einem Antriebsaggregat für eine Antriebswelle und mit einem Spannhebelmechanismus zwischen der Antriebswelle und einer schwenkbar gelagerten Absperrklappe, wobei das Antriebsaggregat einen auf der Antriebswelle befestigten Winkelhebel und zumindest eine an einem Festpunkt angelenkte Zylinderkolbenanordnung zur Betätigung des Winkelhebels aufweist. Ein derartiger Klappen antrieb ist z.B. aus der DE-C- 26 03 242 bekannt.The invention relates to a damper actuator for butterfly valves for shutting off flue gas or exhaust air ducts, in particular ducts with large duct cross sections, with a drive unit for a drive shaft and with a tensioning lever mechanism between the drive shaft and a pivotably mounted butterfly valve, the drive unit being an angle lever attached to the drive shaft and has at least one cylinder piston arrangement articulated at a fixed point for actuating the angle lever. Such a flap drive is e.g. known from DE-C-26 03 242.

Es sind Klappenantriebe für Absperrklappen bekannt, welche mit Luft- oder Hydraulikmotoren arbeiten, die bei Energieausfall aus einem Lufttank bzw. aus einem Blasenspeicher betrieben werden. Derartige Klappenantriebe sind verhältnismäßig kostenaufwendig und nach langen Stillstandszeiten häufig nicht mehr funktionstüchtig. Denn bei den bekannten Ausführungsformen ist regelmäßig ein aus Zahnstange und Ritzel bestehendes Getriebe zwischen dem Antriebsaggregat und der Antriebswelle eingesetzt. Ein solches Getriebe verlangt eine hinreichende Schmierung, wenn ein Fressen zwischen Zahnstange und Ritzel auch nach häufig langen Stillstandszeiten vermieden werden soll. Erfahrungsgemäß treten in solchen Fällen jedoch hinsichtlich der Schmierung Schwierigkeiten auf, so daß oftmals Trockenlauf in Kauf genommen werden muß. Aus einem solchen Trockenlauf resultiert ein "Fressen" bis zur Funktionsuntüchtigkeit des Getriebes.Flap drives for butterfly valves are known which work with air or hydraulic motors which are operated from an air tank or from a bladder accumulator in the event of a power failure. Such flap drives are relatively expensive and often no longer functional after long downtimes. In the known embodiments, a gear consisting of a rack and pinion is regularly inserted between the drive unit and the drive shaft. Such a gearbox requires adequate lubrication if it is intended to avoid seizure between the rack and pinion even after often long downtimes. Experience has shown, however, that there are difficulties with lubrication in such cases, so that it is often necessary to run dry. Such a dry run results in "seizure" until the gearbox becomes inoperative.

Außerdem kennt man eine Klappjalousie zum Verschließen einer Förderleitung für heiße Gase, bestehend aus einem in die Förderleitung einbaubaren Rahmen mit einer Anzahl von in ihm drehbar gelagerten parallelen Achsen mit darauf befestigten Jalousieklappen, wobei die Klappenachsen wenigstens mit einem Ende aus dem Rahmen herausragen und auf diesen Enden Klappenarme befestigt sind, welche durch ein außerhalb der Förderleitung verlaufendes Gestänge untereinander und mit einer Betätigungseinrichtung für die Jalousieklappen verbunden sind. Das Gestänge weist eine Reihe von an die betreffenden Klappenarme angeschlossenen, untereinander gleichlangen Hilfshebeln auf, welche jeweils mit parallel zu den Klappenachsen verlaufenden Drehzapfen in einer außerhalb der Förderleitung anzuordnenden Tragschiene angeordnet sind und jeweils einen Arm aufweisen, welcher die gleiche Länge wie der zugeordnete Klappenarm besitzt, mit welchem er durch eine Betätigungsstange in einer derartigen Länge verbunden ist, daß bei einem bestimmten Temperaturzustand des Rahmens der Hilfshebelarm parallel zum Klappenarm verläuft. Die Hilfshebel sind als Kniehebel ausgebildet (vgl. DE-C- 26 03 242). - Bei dieser bekannten Klappjalousie will man erreichen, daß eine Winkelverdrehung der Jalousieklappen im heißen Zustand nicht länger zu großen Durchlaßschlitzen zwischen den einzelnen Jalousieklappen führt, vielmehr der gewünschte gasdichte Verschluß durch die Klappjalousie bei allen Temperaturen gewährleistet ist. Durch diese bekannten Maßnahmen sind die Probleme um die Verwirklichung eines funktionsgerechten Klappenantriebes auch nach langen Stillstandszeiten für Absperrklappen zum Absperren von Rauchgasen- oder Abluftkanälen mit insbesondere großen Kanalquerschnitten nicht maßgebend beeinflußt worden.In addition, a folding blind for closing a delivery line for hot gases is known, consisting of a frame that can be installed in the delivery line and has a number of parallel axes rotatably mounted in it with louvre flaps attached to it, the flap axes protruding from and at least one end from the frame flap arms are attached to these ends, which are connected to one another and to an actuating device for the louvre flaps by a linkage running outside the delivery line. The linkage has a series of auxiliary levers which are connected to the respective flap arms and are of equal length, which are each arranged with pivot pins running parallel to the flap axes in a support rail to be arranged outside the delivery line and each have an arm which has the same length as the assigned flap arm , with which it is connected by an actuating rod in such a length that the auxiliary lever arm runs parallel to the flap arm at a certain temperature condition of the frame. The auxiliary levers are designed as toggle levers (cf. DE-C-26 03 242). - With this known folding blind, one wants to achieve that an angular rotation of the louvre flaps in the hot state no longer leads to large passage slots between the individual louver flaps, rather the desired gas-tight closure is guaranteed by the folding louver at all temperatures. These known measures have not significantly influenced the problems of realizing a functional damper actuator even after long downtimes for butterfly valves for shutting off flue gas or exhaust air ducts, especially with large duct cross sections.

Der Erfindung liegt die Aufgabe zugrunde, einen Klappenantrieb für Absperrklappen der eingangs beschriebenen Art zu schaffen, der sich durch eine kostengünstige Bauweise und dauerhafte Funktionstüchtigkeit auch nach langen Stillstandszeiten auszeichnet.The invention has for its object to provide a damper actuator for butterfly valves of the type described above, which is characterized by an inexpensive construction and permanent functionality even after long downtimes.

Diese Aufgabe löst die Erfindung bei einem gattungsgemäßen Klappenantrieb dadurch, daß zwei Zylinderkolbenanordnungen vorgesehen sind, und daß die beiden Zylinderkolbenanordnungen an den Hebelenden des Winkelhebels sowie an Festpunkten angelenkt und in Aufeinanderfolge derart mit Druckmedium beaufschlagbar sind, daß der Antrieb der Antriebswelle über einen ersten Drehwinkel allein durch die Betätigung des einen Hebelendes mittels der einen Zylinderkolbenanordnung, über einen sich anschließenden zweiten Drehwinkel durch die gleichzeitige Betätigung beider Hebelenden mittels beider Zylinderkolbenanordnungen und über einen sich anschließenden dritten Drehwinkel allein durch die Betätigung des anderen Hebelendes mittels der anderen Zylinderkolbenanordnung erfolgt. - Im Rahmen der Erfindung ist zunächst einmal von Bedeutung, daß sich hydraulisch oder pneumatisch arbeitende Linearzylinder als Antriebsaggregate einsetzen lassen. Insoweit handelt es sich um einen Doppelzylinderantrieb. Bei solchen Linearzylindern handelt es sich um einfache und bewährte Bauteile, die darüber hinaus äußerst preiswert sind. Allerdings besteht bei Klappenantrieben für Absperrklappen zum Absperren von Rauchgas- oder Abluftkanälen mit großen Kanalquerschnitten ein Problem darin, daß einerseits ein verhältnismäßig großes Drehmoment aufgebracht werden muß, andererseits der Schwenkwinkel bis zu 180° betragen kann. Dieses Problem löst die Erfindung durch den Einsatz von zwei Linearzylindern bzw. Zylinderkolbenanordnungen, welche eine stufenlose Überlagerung von zwei Drehmomentkennlinien ermöglichen. Dadurch steht für das Verschwenken der jeweiligen Absperrklappe stets ein das erforderliche Drehmoment übersteigendes Drehmoment zur Verfügung und ist außerdem eine 180°-Drehbewegung der Antriebswelle gewährleistet. Folglich zeichnet sich der erfindungsgemäße Klappenantrieb auch durch erhöhte und im übrigen dauerhafte Funktionstüchtigkeit aus. Die dauerhafte Funktionstüchtigkeit resultiert aus der Tatsache, daß nunmehr selbst nach langen Stillstandszeiten keine Schwierigkeiten mehr aus einer nunmehr überflüssig gewordenen Getriebeschmierung auftreten. Darüber hinaus lassen sich auch die beiden Zylinderkolbenanordnungen bei Energieausfall aus einem Lufttank oder einem Blasenspeicher betreiben.This object is achieved by the invention in a generic flap drive in that two cylinder piston arrangements are provided, and in that the two cylinder piston arrangements are articulated at the lever ends of the angle lever and at fixed points and can be acted upon in succession with pressure medium in such a way that the drive of the drive shaft over a first angle of rotation alone by the actuation of one lever end by means of one cylinder piston arrangement, via a subsequent second rotation angle by the simultaneous actuation of both lever ends by means of both cylinder piston arrangements and by a subsequent third rotation angle solely by the actuation of the other lever end by means of the other cylinder piston arrangement. - Within the scope of the invention it is first of all important that hydraulically or pneumatically operating linear cylinders can be used as drive units. In this respect, it is a double cylinder drive. Such linear cylinders are simple and proven components that are also extremely inexpensive. However, a problem with damper actuators for butterfly valves for shutting off flue gas or exhaust air ducts with large duct cross sections is that on the one hand a relatively large torque must be applied and on the other hand the swivel angle can be up to 180 °. The invention solves this problem by using two linear cylinders or cylinder piston arrangements, which enable a continuous superimposition of two torque characteristics. As a result, a torque exceeding the required torque is always available for pivoting the respective butterfly valve, and a 180 ° rotary movement of the drive shaft is also guaranteed. Consequently, the invention is distinguished Damper actuator also characterized by increased and otherwise permanent functionality. The permanent functionality results from the fact that now, even after long downtimes, there are no longer any problems from a gear lubrication that has now become superfluous. In addition, the two cylinder piston arrangements can be operated from an air tank or a bladder accumulator in the event of a power failure.

Weitere erfindungswesentliche Merkmale sind im folgenden aufgeführt. Nach einem Vorschlag der Erfindung mit selbständiger Bedeutung ist vorgesehen, daß die beiden Hebelarme des Winkelhebels einen 90° Winkel bilden und sich der eine Hebelarm in Ausgangsstellung in etwa 7 Uhr/8 Uhr-Stellung befindet und die eine Zylinderkolbenanordnung mit eingefahrener Kolbenstange an dem Hebelende des einen Hebelarmes angelenkt ist und sich mit ihrer Festpunktlagerung auf der einen Seite der Antriebswelle befindet, und daß sich der andere Hebelarm in Ausgangsstellung in 10 Uhr/ 11 Uhr-Stellung befindet und die andere Zylinderkolbenanordnung mit ausgefahrener Kolbenstange an dem Hebelende des anderen Hebelarmes angelenkt ist und sich mit den einen Hebelarm kreuzender Kolbenstange in Schrägstellung sowie mit ihrer Festpunktanlenkung auf der anderen Seite der Antriebswelle befindet. Dadurch wird einerseits eine Drehbewegung des Winkelhebels bzw. seiner Hebelarme sichergestellt, andererseits eine Drebewegung über einen Drehwinkel von zumindest 180°, und zwar eben mit teilweiser Überlagerung der Drehmomente. Dennoch läßt sich eine verhältnismäßig kompakte Bauweise verwirklichen. Das gilt auch unter Berücksichtigung der Tatsache, daß sich die beiden Festpunktanlenkungen für die zwei Zylinderkolbenanordnungen zweckmäßigerweise auf gleicher Ebene befinden. Im Zuge der auf die Antriebswelle zu übertragenden Drehbewegung arbeitet die eine Zylinderkolbenanordnung in drückendem Sinne und die andere Zylinderkolbenanordnung in ziehendem Sinne und umgekehrt. Der Hub der beiden Zylinderkolbenanordnungen entspricht jedenfalls zumindest einer 180°-Drehwinkelbetätigung des jeweiligen Hebelarmes bzw. Hebelendes des Winkelhebels. Weiter lehrt die Erfindung, daß für die beiden Zylinderkolbenanordnungen eine Ventilsteuerung mit jeweils einem Mehrwegeventil, z. B. 4/3-Wegeventil, und jeweils einem Endschalter für das eine Hebelende und das andere Hebelende des Winkelhebels vorgesehen ist, und daß die Positionen der Endschalter den Drehwinkel für die gleichzeitige Beaufschlagung der beiden Zylinderkolbenanordnungen bzw. Betätigung der beiden Hebelenden und folglich die stufenlose Überlagerung der Drehmomente vorgeben.Further features essential to the invention are listed below. According to a proposal of the invention with independent importance, it is provided that the two lever arms of the angle lever form a 90 ° angle and the one lever arm is in the starting position in about 7 o'clock / 8 o'clock position and which has a cylinder piston arrangement with a retracted piston rod at the lever end of the a lever arm is articulated and is with its fixed point bearing on one side of the drive shaft, and that the other lever arm is in the starting position in the 10 o'clock / 11 o'clock position and the other cylinder piston arrangement is articulated with the extended piston rod on the lever end of the other lever arm and is in an inclined position with the piston rod crossing a lever arm and with its fixed point linkage on the other side of the drive shaft. This ensures on the one hand a rotational movement of the angle lever or its lever arms, on the other hand a rotational movement over an angle of rotation of at least 180 °, specifically with partial superimposition of the torques. Nevertheless, a relatively compact design can be realized. This also applies taking into account the fact that the two fixed point linkages for the two cylinder piston arrangements expediently are on the same level. In the course of the rotary movement to be transmitted to the drive shaft, one cylinder piston arrangement works in a pushing sense and the other cylinder piston arrangement works in a pulling sense and vice versa. The stroke of the two cylinder piston arrangements corresponds in any case to at least one 180 ° rotation angle actuation of the respective lever arm or lever end of the angle lever. The invention further teaches that for the two cylinder piston assemblies, a valve control, each with a multi-way valve, for. B. 4/3-way valve, and a limit switch is provided for the one lever end and the other lever end of the angle lever, and that the positions of the limit switches the angle of rotation for the simultaneous application of the two cylinder piston assemblies or actuation of the two lever ends and consequently the stepless Specify the superposition of the torques.

Im folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert; es zeigen:

Fig. 1
einen erfindungsgemäßen Klappenantrieb in perspektivischer Darstellung,
Fig. 2
das Antriebsaggregat für die Antriebswelle des Gegenstandes nach Fig. 1 in Ausgangsstellung,
Fig. 3
den Gegenstand nach Fig. 2 nach einer 180°-Drehbewegung ohne Ventilsteuerung und
Fig. 4
ein Drehmomenten-Diagrammm.
In the following, the invention is explained in more detail with reference to a drawing showing only one embodiment; show it:
Fig. 1
a valve actuator according to the invention in a perspective view,
Fig. 2
the drive assembly for the drive shaft of the object of FIG. 1 in the starting position,
Fig. 3
2 after a 180 ° rotation without valve control and
Fig. 4
a torque diagram

In den Figuren ist ein Klappenantrieb für eine Absperrklappe 1 zum Absperren eines Rauchgaskanals 2 mit verhältnismäßig großem Kanalquerschnitt dargestellt. Dieser Klappenantrieb weist ein Antriebsaggregat 3 für eine Antriebswelle 4 und einen Spannhebelmechanismus 5 auf, der zwischen der Antriebswelle 4 und der schwenkbar gelagerten Absperrklappe 1 angeordnet ist. Das Antriebsaggregat 3 weist einen auf der Antriebswelle drehfest befestigten Winkelhebel 6 und zwei Zylinderkolbenanordnungen 7, 8 auf. Die beiden Zylinderkolbenanordnungen 7, 8 sind an den Hebelenden 6a, 6b des Winkelhebels 6 sowie an Festpunkten 9, 10 angelenkt. Die Beaufschlagung der beiden Zylinderkolbenanordnungen 7, 8 mit Druckmedium erfolgt in Aufeinanderfolge derart, daß der Antrieb der Antriebswelle 4 über einen ersten Drehwinkel α allein durch die Betätigung des einen Hebelendes 6a mittels der einen Zylinderkolbenanordnung 7 erfolgt, über einen zweiten Drehwinkel β durch die gleichzeitige Betätigung beider Hebelenden 6a, 6b mittels beider Zylinderkolbenanordnungen 7, 8 und über einen dritten Drehwinkel γ allein durch die Betätigung des anderen Hebelendes 6b mittels der anderen Zylinderkolbenanordnung 8 erfolgt.In the figures, a flap drive for a butterfly valve 1 for shutting off a flue gas duct 2 with a relatively large duct cross section is shown. This flap drive has a drive unit 3 for a drive shaft 4 and a tensioning lever mechanism 5, which is arranged between the drive shaft 4 and the pivotably mounted butterfly valve 1. The drive unit 3 has an angle lever 6, which is fixed in a rotationally fixed manner on the drive shaft, and two cylinder piston arrangements 7, 8. The two cylinder piston assemblies 7, 8 are articulated on the lever ends 6a, 6b of the angle lever 6 and on fixed points 9, 10. The application of pressure medium to the two cylinder piston assemblies 7, 8 takes place in succession in such a way that the drive of the drive shaft 4 via a first angle of rotation α takes place solely by actuating one lever end 6a by means of one cylinder piston arrangement 7, via a second angle of rotation β by simultaneous actuation both lever ends 6a, 6b by means of both cylinder piston arrangements 7, 8 and over a third angle of rotation γ solely by actuating the other lever end 6b by means of the other cylinder piston arrangement 8.

Die beiden Hebelarme 11, 12 des Winkelhebels 6 bilden einen 90° Winkel. Der eine Hebelarm 11 befindet sich in Ausgangsstellung in etwa 7 Uhr/ 8 Uhr-Stellung, wobei die eine Zylinderkolbenanordnung 7 mit eingefahrener Kolbenstange 13 an dem Hebelende 6a des einen Hebelarms 11 angelenkt ist und sich mit ihrer Festpunktanlenkung 9 auf der einen Seite der Antriebswelle 4 - bezogen auf eine durch die Antriebswelle 4 geführte Vertikalachse M - befindet. Der andere Hebelarm 12 befindet sich in Ausgangsstellung - aufgrund des 90° Winkels zwangsläufig in 10 Uhr/ 11 Uhr-Stellung. Die andere Zylinderkolbenanordnung 8 ist mit ausgefahrener Kolbenstange 14 an dem Hebelende 6b des anderen Hebelarms 12 angelenkt und befindet sich mit den einen Hebelarm 11 kreuzender Kolbenstange 14 in Schrägstellung sowie mit ihrer Festpunktanlenkung 10 auf der anderen Seite der Antriebswelle 4 - wiederum bezogen auf die durch die Antriebswelle 4 geführte Vertikalachse M. Die beiden Festpunktanlenkungen 9, 10 der Zylinderkolbenanordnungen 7, 8 liegen auf gleicher Ebene. Der Hub der beiden Zylinderkolbenanordnungen 7, 8 entspricht einer 180°-Drehwinkelbetätigung des jeweiligen Hebelarmes bzw. Hebelendes des Winkelhebels 6 und folglich einer 180°-Drehbewegung der Antriebswelle 4.The two lever arms 11, 12 of the angle lever 6 form a 90 ° angle. One lever arm 11 is in the starting position at about 7 o'clock / 8 o'clock position, the one cylinder piston arrangement 7 with the piston rod 13 retracted being articulated on the lever end 6 a of the one lever arm 11 and with its fixed point linkage 9 on one side of the drive shaft 4 - Based on a vertical axis M - guided by the drive shaft 4. The other lever arm 12 is in the starting position - inevitably in the 10 o'clock / 11 o'clock position due to the 90 ° angle. The other Cylinder-piston arrangement 8 is articulated with the extended piston rod 14 on the lever end 6b of the other lever arm 12 and is located in an inclined position with the piston rod 14 crossing a lever arm 11 and with its fixed point linkage 10 on the other side of the drive shaft 4 - again in relation to that through the drive shaft 4 guided vertical axis M. The two fixed point linkages 9, 10 of the cylinder piston assemblies 7, 8 lie on the same plane. The stroke of the two cylinder piston assemblies 7, 8 corresponds to a 180 ° rotation angle actuation of the respective lever arm or lever end of the angle lever 6 and consequently a 180 ° rotation movement of the drive shaft 4.

Für die beiden Zylinderkolbenanordnungen 7, 8 ist eine Ventilsteuerung mit jeweils einem Magnetventil bzw. 4/3-Wegeventil 15, 16 und jeweils einem Endschalter 17, 18 für das eine Hebelende 6a und das andere Hebelende 6b des Winkelhebels 6 vorgesehen. Die Positionen der beiden Endschalter 17, 18 geben den Drehwinkel β für die gleichzeitige Beaufschlagung der beiden Zylinderkolbenanordnungen 7, 8 bzw. Betätigung der beiden Hebelenden und folglich für die stufenlose Überlagerung der Drehmomente vor.For the two cylinder piston assemblies 7, 8, a valve control with a solenoid valve or 4/3-way valve 15, 16 and a limit switch 17, 18 is provided for one lever end 6a and the other lever end 6b of the angle lever 6. The positions of the two limit switches 17, 18 specify the angle of rotation β for the simultaneous action on the two cylinder piston arrangements 7, 8 or actuation of the two lever ends and consequently for the stepless superimposition of the torques.

Claims (5)

  1. A butterfly valve driving apparatus for butterfly valves (1) for the closure of flue gas or exhaust air ducts (2), particularly of ducts (2) with large duct cross-sections, having a drive unit (3) for a drive shaft (4) and having a gripping lever mechanism (5) between the drive shaft (4) and a pivotally mounted butterfly valve (1), wherein the drive unit (3) comprises an elbow lever (6) attached to the drive shaft (4) and at least one cylinder-and-piston arrangement (7; 8) articulated to a fixed point (9; 10) for actuating the elbow lever (6), characterised in that two cylinder-and-piston arrangements (7, 8) are articulated to the lever ends (6a, 6b) of the elbow lever (6) and to fixed points (9, 10) and can be acted upon successively by pressure medium in such a way that the drive of the drive shaft (4) over a first angle of rotation (α) is effected solely by the actuation of one lever end (6a) by means of one cylinder-and-piston arrangement (7), over a second angle of rotation (β) by the simultaneous actuation of both lever ends (6a, 6b) by means of both cylinder-and-piston arrangements (7, 8), and over a third angle of rotation (y) solely by the actuation of the other lever end (6b) by means of the other cylinder-and-piston arrangement (8).
  2. A butterfly valve driving apparatus according to claim 1, characterised in that the two lever arms (11, 12) of the elbow lever (6) form a 90° angle and one lever arm (11) is located approximately in a 7 o'clock/8 o'clock position in its starting position and one cylinder-and-piston arrangement (7) is articulated, with its piston rod (13) retracted, to the lever end (6a) of one lever arm (11) and is situated with its fixed point articulation (9) on one side of the drive shaft (4), and that the other lever arm (12) is located in a 10 o'clock/11 o'clock position in its starting position and the other cylinder-and-piston arrangement (8) is articulated, with its piston rod (14) extended, to the lever end (6b) of the other lever arm (12) and is situated with its piston rod (14) crossing one lever arm (11) in a slanting position and with its fixed point articulation (10) on the other side of the drive shaft (4).
  3. A butterfly valve driving apparatus according to claim 1 or 2, characterised in that the two fixed point articulations (9, 10) of the cylinder-and-piston arrangements (7, 8) are situated on the same level.
  4. A butterfly valve driving apparatus according to any one of claims 1 to 3, characterised in that the stroke of the two cylinder-and-piston arrangements (7, 8) corresponds to a 180° angular actuation of the respective lever arm or lever end of the elbow lever (6).
  5. A butterfly valve driving apparatus according to any one of claims 1 to 4, characterised in that a valve control system with a multi-way valve (15, 16) in each case, e.g. a 4/3-way valve, is provided for the two cylinder-and-piston arrangements (7, 8), and a limit switch (17, 18) is provided in each case for one lever end (6a) and for the other lever end (6b) of the elbow lever (6), and that the positions of the limit switches (17, 18) predetermine the angle of rotation for the simultaneous actuation of the two cylinder-and-piston arrangements (7, 8) and for the actuation of the two lever ends and the continuous superposition of the torques, respectively.
EP91113704A 1990-10-23 1991-08-15 Butterfly valve-driving for closure of smoke gas or discharge air conduits Expired - Lifetime EP0482310B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4033663 1990-10-23
DE4033663A DE4033663C1 (en) 1990-10-23 1990-10-23

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EP0482310A1 EP0482310A1 (en) 1992-04-29
EP0482310B1 true EP0482310B1 (en) 1994-08-10

Family

ID=6416871

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Application Number Title Priority Date Filing Date
EP91113704A Expired - Lifetime EP0482310B1 (en) 1990-10-23 1991-08-15 Butterfly valve-driving for closure of smoke gas or discharge air conduits

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EP (1) EP0482310B1 (en)
AT (1) ATE109873T1 (en)
DE (1) DE4033663C1 (en)
DK (1) DK0482310T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19947056A1 (en) * 1999-09-30 2001-04-05 Janich Gmbh & Co Smoke flue regulating and shutoff valve is coupled to drive shaft by flush-joinable plates allowing blade removal and framework collapse for manageable transport.
DE102007016554A1 (en) 2007-04-05 2008-10-09 Janich Gmbh & Co. Kg Shut-off system for large cable cross-sections with a pivoting flap
CN103742702B (en) * 2013-11-29 2016-04-13 成都欧浦特控制阀门有限公司 Corrosion resistant angle stroke cylinder formula actuator

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1914682A (en) * 1930-06-30 1933-06-20 Cheater Charles Ventilator
DE1683114C3 (en) * 1967-01-28 1975-04-10 Fa. H. Krantz, 5100 Aachen Pivoting flap for gas-tight closing of openings with an inflatable elastic hose
CH549179A (en) * 1972-03-14 1974-05-15 Sulzer Ag GAS-TIGHT LOCKING FLAP.
DE2414164C3 (en) * 1974-03-23 1978-10-12 Maico Elektroapparate-Fabrik Gmbh, 7220 Schwenningen Fan louvre
DE2918348A1 (en) * 1979-05-07 1980-11-20 Adams Gmbh & Co Kg Armaturen & Butterfly valve with double seat - has sliding disc actuated by rod in spindle via bell-crank lever
US4611551A (en) * 1984-12-14 1986-09-16 Ferguson James S Snorkel mast for a semi-submersible vehicle

Also Published As

Publication number Publication date
EP0482310A1 (en) 1992-04-29
DK0482310T3 (en) 1994-09-26
DE4033663C1 (en) 1992-02-13
ATE109873T1 (en) 1994-08-15

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