WO2017144354A1 - Armature having opening support - Google Patents

Armature having opening support Download PDF

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Publication number
WO2017144354A1
WO2017144354A1 PCT/EP2017/053581 EP2017053581W WO2017144354A1 WO 2017144354 A1 WO2017144354 A1 WO 2017144354A1 EP 2017053581 W EP2017053581 W EP 2017053581W WO 2017144354 A1 WO2017144354 A1 WO 2017144354A1
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WO
WIPO (PCT)
Prior art keywords
valve
magnets
valve body
valve seat
electromagnet
Prior art date
Application number
PCT/EP2017/053581
Other languages
German (de)
French (fr)
Inventor
Martin Adams
Original Assignee
Adams Armaturen Gmbh
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 Adams Armaturen Gmbh filed Critical Adams Armaturen Gmbh
Publication of WO2017144354A1 publication Critical patent/WO2017144354A1/en

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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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
    • F16K1/2007—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member specially adapted operating means therefor
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/221—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves specially adapted operating means therefor
    • 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
    • F16K29/00—Arrangements for movement of valve members other than for opening and closing the valve, e.g. for grinding-in, for preventing sticking
    • 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
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/08—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet
    • F16K31/082—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet using a electromagnet and a permanent magnet
    • 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
    • F16K39/00—Devices for relieving the pressure on the sealing faces
    • F16K39/02—Devices for relieving the pressure on the sealing faces for lift valves
    • F16K39/028—Devices for relieving the pressure on the sealing faces for lift valves with pivoted closure members, e.g. butterfly valves

Definitions

  • the invention relates to a device for opening a shut-off valve
  • valve housing Having valve housing and a valve seat arranged in the valve housing,
  • shut-off valves regardless of the design (eg flap valve, slide valve, lifting valve, etc.) or function, there is often the problem that the valve body settles in the shut-off position in or on the valve seat. This problem arises in particular when a large surface pressure between the sealing surfaces of valve seat and valve body must be generated to achieve a good seal, for example, by a wedge-shaped or conical shape of these sealing surfaces.
  • the valve seat and the valve body can, for example, become wedged against one another by differential thermal expansion. With long-lasting shut-off comes It also happens that incrustations on the sealing surfaces of the valve seat and the valve body result from deposits from the pumped medium, which must be broken up with the initiation of the opening process.
  • the electromagnet located on the valve seat is supplied with electrical energy via a steady DC source.
  • the power supply of the solenoid located on the valve body is in contrast by means of a pole-changing continuous DC power source, so that the magnetic field of this electromagnet can be reversed in a simple manner to generate depending on the direction of movement of the valve body attractive or repulsive magnetic forces.
  • the achievable with such steady DC sources magnetic forces are not sufficient to generate the breakaway forces or breakaway torques required for the breakaway of a stuck in the shut-off valve body. It is therefore an object of the invention to develop the shut-off valve of the type mentioned in that breakaway forces or breakaway torques can be introduced into the valve body, which are sufficient to release the stuck in the shut-off valve body from the valve seat.
  • the invention proposes, starting from a shut-off valve of the type mentioned above, that the electromagnet for power supply is assigned a surge current source whose current pulse generates the repulsive magnetic field of the electromagnet.
  • a surge current source for the power supply of the electromagnet it is possible to generate with the electromagnet for a very short time an electromagnetic field with extremely high electromagnetic field strength. The thus achievable magnetic repulsive forces are sufficient to solve the stuck valve seat on the valve body abruptly from the valve seat and thus free for the subsequent opening process.
  • a preferred embodiment of the invention provides that the current source is a surge current memory.
  • a capacitive current memory eg an electrical capacitor
  • capacitive power storage are inexpensive and in terms of their electrical properties (voltage, current, discharge time, etc.) are easily adaptable to the particular needs.
  • the arrangement and design of the magnets used is largely variable and adaptable to the particular needs. It is particularly simple if the magnets arranged on the valve body are permanent magnets. This has the advantage that no power supply to the valve body is necessary for these permanent magnets located on the valve body, which would be difficult because of its mobility.
  • the magnets arranged on the valve seat are permanent magnets and the electromagnets are arranged on the valve body. Such an arrangement is useful if the power supply of the magnets on the valve seat by the technical and / or local conditions can be realized only consuming.
  • both the valve seat and the valve body arranged magnets are electromagnets.
  • the power supply to the valve seat or the valve body arranged electromagnets additionally via a DC power source, which is expedient polumschaltbar.
  • the power supply of the electromagnets of two pairs of magnets via two separate surge power sources This makes it possible, for example, to allow two opening pulses to act on the valve body with a short time interval.
  • a particularly preferred embodiment of the invention provides that the valve body is a pivotable by means of a pivot shaft flap, and that at least two pairs of magnets are provided on the circumference of the flap and valve seat, which are arranged opposite each other at a distance, in particular with the greatest possible distance from the pivot shaft are.
  • this embodiment of the fitting and arrangement of the magnet pairs it is possible to generate a particularly large breakaway torque with respect to the pivot shaft.
  • Figure 1 Schematically a longitudinal section through a device according to the invention
  • FIG. 2 a detailed view of the region A from FIG. 1
  • the shut-off valve shown in the drawing has a designated by the reference numeral 1 valve housing.
  • an annular valve seat 2 which is provided at its inner periphery with a substantially conical sealing surface 2a.
  • a valve body serving as a flap 3, which has on its outer periphery a sealing surface 3a, the shape of the sealing surface 2a of the valve seat 2 is adjusted.
  • a force transmission element serving flapper shaft 4 which is driven in rotation by a drive, not shown, arranged outside the housing. This drive is indicated in Figure 1 by the movement arrow 5.
  • shut-off valve shown in the drawing is tight, the two sealing surfaces 2a and 3a of valve seat 2 and 3 flap pressed with the greatest possible surface pressure against each other.
  • This surface pressure is reinforced in the embodiment by the taper of these sealing surfaces. It may happen that the flap 3 is jammed in the valve seat and blocked. Under certain circumstances, this blockage can still be intensified by incrustations originating from the medium flowing through. The breaking of this blockade would overtax the drive 5 and serving as a force transmission element flap shaft 4 in this case.
  • the serving as a valve body flap 3 and the valve seat 2 interacting magnets 6a and 6b are assigned.
  • the magnet 6a is formed on the flap 3 as a permanent magnet, while the magnet 6b on the valve seat 2 is designed as an electromagnet.
  • the arrangement of the permanent magnet 6a on the flap has the advantage that no power supply to the flap 3 is necessary for its power supply.
  • the valve seat associated electromagnet 6b is connected to a surge current source 7, the capacitive current storage is formed.
  • a short and high current pulse is switched to the electromagnet 6 b of the surge current source 7.
  • this electromagnet briefly generates an intense magnetic field which acts repulsively on the magnetic field of the permanent magnet 6a located in the flap 3.
  • the magnetic fields of the permanent magnet 6 a and the electromagnet 6 b are indicated in Figure 2 by field lines 8.
  • the repulsive magnetic fields of the permanent magnet 6a and the electromagnet 6b generate with respect to the pivot shaft 4 an intense, acting in the opening direction breakaway torque, which triggers the stuck flap 3 from its blockage.
  • the subsequent opening process takes place in a conventional manner, the drive 5, which acts on the flap 3 via the pivot shaft 4.
  • the arrangement of the magnets can be varied in many ways, as long as there is a magnet pair with interacting magnets on the valve seat and valve body, at least one of which is designed as an electromagnet which can be connected to a surge current source whose current pulse generates a repulsive magnetic field, which acts in the opening direction on the movable valve body of the shut-off valve.

Abstract

The invention relates to a device for opening a section of the armature, having a valve housing (1) and a valve seat (2) arranged in the valve housing (1), to which a valve body (3) is assigned, which can be actuated via force transmission elements (4) by a drive (5) positioned outside the valve housing, wherein magnets (6a, 6b) are provided on the valve body (3) and the valve seat (2), said magnets acting on one another and forming a magnet pair, and one of which is designed as an electromagnet (6b) with a magnetic field that acts in a repelling manner on the other magnet (6a). According to the invention, in order to be able to introduce sufficient breakaway forces or breakaway torques into the valve body (3) in a device of this type, the electromagnet (6b) is assigned an impulse current source (7) for power supply, the discharge current of which generates the repelling magnetic field of the electromagnet (6b).

Description

Armatur mit Öffnunasunterstützuna Die Erfindung betrifft eine Vorrichtung zum Öffnen einer Absperrarmatur, die ein  The invention relates to a device for opening a shut-off valve, the
- Ventilgehäuse und einen in dem Ventilgehäuse angeordneten Ventilsitz aufweist, Having valve housing and a valve seat arranged in the valve housing,
- welchem ein Ventilkörper zugeordnet ist, - which is associated with a valve body,
- der über einen außerhalb des Ventilgehäuses liegenden Antrieb über Kraftübertragungselemente betätigbar ist, - Which is actuated via a lying outside the valve housing drive via power transmission elements,
- wobei an dem Ventilkörper und an dem Ventilsitz aufeinander einwirkende Magnete vorgesehen sind, die ein Magnetpaar bilden und von denen einer als Elektromagnet ausgebildet ist, dessen Magnetfeld auf den anderen Magneten abstoßend einwirkt. Bei Absperrarmaturen ergibt sich unabhängig von Bauart (z. B. Klappenventil, Schieberventil, Hubventil etc.) oder Funktion oft das Problem, dass der Ventilkörper sich in der Absperrstellung in oder an dem Ventilsitz festsetzt. Dieses Problem ergibt sich insbesondere, wenn zur Erzielung einer guten Abdichtung eine große Flächenpressung zwischen den Dichtflächen von Ventilsitz und Ventilkörper erzeugt werden muss, beispielsweise durch eine keilförmige oder konische Gestalt dieser Dichtflächen. Hinzu kommt, dass sich der Ventilsitz und der Ventilkörper zum Beispiel durch unterschiedliche Wärmedehnung gegeneinander verkeilen können. Bei lange andauernder Absperrstellung kommt es auch vor, dass sich an den Dichtflächen von Ventilsitz und Ventilkörper durch Abscheidungen aus dem Fördermedium Verkrustungen ergeben, die mit der Einleitung des Öffnungsvorganges aufgebrochen werden müssen. - Wherein on the valve body and on the valve seat successive acting magnets are provided which form a pair of magnets and one of which is designed as an electromagnet whose magnetic field acts repulsively on the other magnet. In the case of shut-off valves, regardless of the design (eg flap valve, slide valve, lifting valve, etc.) or function, there is often the problem that the valve body settles in the shut-off position in or on the valve seat. This problem arises in particular when a large surface pressure between the sealing surfaces of valve seat and valve body must be generated to achieve a good seal, for example, by a wedge-shaped or conical shape of these sealing surfaces. In addition, the valve seat and the valve body can, for example, become wedged against one another by differential thermal expansion. With long-lasting shut-off comes It also happens that incrustations on the sealing surfaces of the valve seat and the valve body result from deposits from the pumped medium, which must be broken up with the initiation of the opening process.
Um die Absperrarmatur jederzeit problemlos öffnen zu können, ist es normalerweise üblich, den Antrieb und die vom Antrieb zum Ventilkörper führenden Kraftübertragungselemente so zu dimensionieren, dass sie die zum Lösen des in der Absperrstellung festsitzenden Ventilkörpers erforderlichen Losbrechkräfte bzw. Losbrechmomente aufbringen können. Das bedeutet, dass der Antrieb und die zum Ventilkörper führenden Kraftübertragungselemente oft erheblich überdimensioniert werden müssen, d.h. wesentlich stärker ausgelegt werden müssen, als zur normalen Bewegung des Ventilkörpers erforderlich ist. Die hierdurch entstehenden Mehrkosten sind erheblich. To be able to open the shut-off valve at any time without any problems, it is usually customary to dimension the drive and the power transmission elements leading from the drive to the valve body in such a way that they can apply the breakaway forces or breakaway torques required to release the valve body which is stuck in the shut-off position. This means that the drive and the power transmission elements leading to the valve body often have to be significantly oversized, i. must be designed much stronger than is required for normal movement of the valve body. The resulting additional costs are considerable.
Nach dem Stand der Technik ist es im Prinzip bekannt, die Relativbewegung zwischen dem Ventilkörper und dem Ventilsitz einer Absperrarmatur durch zusätzliche Hilfsmittel zu unterstützen. So sind zum Beispiel bei der Absperrarmatur der eingangs genannten Art (vergl.US 3 325 140) am Ventilsitz und am Ventilkörper Elektromagnete vorgesehen, die ein Magnetpaar bilden, deren Magnetfelder je nach elektrischer Beschaltung anziehend oder abstoßend aufeinander einwirken und auf diese Weise mit zusätzlichen Öffnung- oder Schließkräften auf den Ventilkörper einwirken, wobei der Ventilkörper im Übrigen durch einen außerhalb des Ventilgehäuses liegenden Antrieb über Kraftübertragungselemente betätigbar ist. According to the prior art, it is known in principle to support the relative movement between the valve body and the valve seat of a shut-off valve by additional aids. For example, electromagnets are provided in the shut-off valve of the type mentioned above (see US Pat. No. 3,325,140) on the valve seat and on the valve body, forming a magnetic pair whose magnetic fields act attractively or repulsively on each other depending on the electrical wiring and in this way with additional opening Acting - or closing forces on the valve body, wherein the valve body by the way by a lying outside the valve housing drive via power transmission elements is actuated.
Bei diesem Stand der Technik wird der am Ventilsitz befindliche Elektromagnet über eine stetige Gleichstromquelle mit elektrischer Energie versorgt. Die Energieversorgung des am Ventilkörper befindlichen Elektromagneten erfolgt demgegenüber mittels einer polumschaltbaren stetigen Gleichstromquelle, sodass das Magnetfeld dieses Elektromagneten auf einfache Weise umgepolt werden kann, um je nach Bewegungsrichtung des Ventilkörpers anziehende oder abstoßende magnetische Kräfte erzeugen zu können. Die mit solchen stetigen Gleichstromquellen erzielbaren magnetischen Kräfte reichen allerdings nicht aus, die für das Losbrechen eines in der Absperrstellung festsitzenden Ventilkörpers erforderlichen Losbrechkräfte oder Losbrechmomente zu erzeugen. Es ist deshalb Aufgabe der Erfindung, die Absperrarmatur der eingangs genannten Art dahingehend weiterzubilden, dass in den Ventilkörper Losbrechkräfte oder Losbrechmomente eingeleitet werden können, die ausreichen, den in der Absperrstellung festsitzenden Ventilkörper vom Ventilsitz zu lösen. In this prior art, the electromagnet located on the valve seat is supplied with electrical energy via a steady DC source. The power supply of the solenoid located on the valve body is in contrast by means of a pole-changing continuous DC power source, so that the magnetic field of this electromagnet can be reversed in a simple manner to generate depending on the direction of movement of the valve body attractive or repulsive magnetic forces. However, the achievable with such steady DC sources magnetic forces are not sufficient to generate the breakaway forces or breakaway torques required for the breakaway of a stuck in the shut-off valve body. It is therefore an object of the invention to develop the shut-off valve of the type mentioned in that breakaway forces or breakaway torques can be introduced into the valve body, which are sufficient to release the stuck in the shut-off valve body from the valve seat.
Zur Lösung dieser Aufgabe schlägt die Erfindung ausgehend von einer Absperrarmatur der eingangs genannten Art vor, dass dem Elektromagneten zur Stromversorgung eine Stoßstromquelle zugeordnet ist, deren Stromimpuls das abstoßende Magnetfeld des Elektromagneten erzeugt. Durch die Verwendung einer Stoßstromquelle für die Stromversorgung des Elektromagneten ist es möglich, mit dem Elektromagneten für sehr kurze Zeit ein elektromagnetisches Feld mit extrem hoher elektromagnetischer Feldstärke zu erzeugen. Die hierdurch erreichbaren magnetischen Abstoßkräfte reichen aus, den am Ventilsitz festsitzenden Ventilkörper schlagartig vom Ventilsitz zu lösen und somit für den nachfolgenden Öffnungsvorgang freizumachen. To solve this problem, the invention proposes, starting from a shut-off valve of the type mentioned above, that the electromagnet for power supply is assigned a surge current source whose current pulse generates the repulsive magnetic field of the electromagnet. By using a surge current source for the power supply of the electromagnet, it is possible to generate with the electromagnet for a very short time an electromagnetic field with extremely high electromagnetic field strength. The thus achievable magnetic repulsive forces are sufficient to solve the stuck valve seat on the valve body abruptly from the valve seat and thus free for the subsequent opening process.
Eine bevorzugte Ausführungsform der Erfindung sieht vor, dass die Stromstoßquelle ein kapazitiver Stromspeicher ist. Ein solcher kapazitiver Stromspeicher (z.B. ein elektrischer Kondensator) ist für diesen Einsatzfall besonders gut geeignet, weil er eine ausreichend hohe Speicherkapazität haben kann und die gespeicherte Energie als Entladungsstrom in extrem kurzer Zeit in Form eines Hochstromimpulses abgeben kann. Hinzu kommt, dass kapazitive Stromspeicher kostengünstig sind und im Hinblick auf ihre elektrischen Eigenschaften (Spannung, Stromstärke, Entladezeit etc.) einfach an den jeweiligen Bedarf anpassbar sind. Die Anordnung und Ausgestaltung der verwendeten Magnete ist weitgehend variierbar und an den jeweiligen Bedarf anpassbar. Besonders einfach ist es, wenn die am Ventilkörper angeordneten Magnete Permanentmagnete sind. Das hat den Vorteil, dass für diese am Ventilkörper befindlichen Permanentmagnete keine Stromzuführung in den Ventilkörper notwendig ist, was wegen dessen Beweglichkeit schwierig wäre. Alternativ hierzu ist es natürlich auch möglich und unter Umständen auch vorteilhaft, wenn die am Ventilsitz angeordneten Magnete Permanentmagnete sind und die Elektromagnete am Ventilkörper angeordnet sind. Eine solche Anordnung ist sinnvoll, wenn die Stromversorgung der Magnete am Ventilsitz durch die technischen und/oder örtlichen Gegebenheiten nur aufwendig zu realisieren ist. A preferred embodiment of the invention provides that the current source is a surge current memory. Such a capacitive current memory (eg an electrical capacitor) is particularly well suited for this application because it can have a sufficiently high storage capacity and can deliver the stored energy as a discharge current in an extremely short time in the form of a high current pulse. In addition, capacitive power storage are inexpensive and in terms of their electrical properties (voltage, current, discharge time, etc.) are easily adaptable to the particular needs. The arrangement and design of the magnets used is largely variable and adaptable to the particular needs. It is particularly simple if the magnets arranged on the valve body are permanent magnets. This has the advantage that no power supply to the valve body is necessary for these permanent magnets located on the valve body, which would be difficult because of its mobility. Alternatively, it is of course also possible and under certain circumstances also advantageous if the magnets arranged on the valve seat are permanent magnets and the electromagnets are arranged on the valve body. Such an arrangement is useful if the power supply of the magnets on the valve seat by the technical and / or local conditions can be realized only consuming.
Unter Umständen kann es auch sinnvoll sein, wenn sowohl die am Ventilsitz als auch die am Ventilkörper angeordneten Magnete Elektromagnete sind. In diesem Fall ist es möglich, im Bedarfsfall die Bewegungsvorgänge des Ventilkörpers zusätzlich zu beeinflussen, zum Beispiel durch eine zusätzliche magnetischen Zuhaltung in der Absperrstellung und/oder eine Dämpfung der Bewegung des Ventilkörpers beim Schließvorgang. In diesem Fall erfolgt natürlich die Stromversorgung der am Ventilsitz bzw. am Ventilkörper angeordneten Elektromagnete zusätzlich über eine Gleichstromquelle, die zweckmäßig polumschaltbar ist. Under certain circumstances, it may also be useful if both the valve seat and the valve body arranged magnets are electromagnets. In this case, it is possible to additionally influence, if necessary, the movement processes of the valve body, for example by an additional magnetic tumbler in the shut-off position and / or a damping of the movement of the valve body during the closing operation. In this case, of course, the power supply to the valve seat or the valve body arranged electromagnets additionally via a DC power source, which is expedient polumschaltbar.
Zur Intensivierung der Losbrechkräfte oder Losbrechmomente und besseren Unterstützung des Öffnungsvorganges kann es auch sinnvoll sein, wenn die Stromversorgung der Elektromagnete von zwei Magnetpaaren über zwei separate Stoßstromquellen erfolgt. Hierdurch ist es zum Beispiel möglich, zwei Öffnungsimpulse mit einem kurzen zeitlichen Abstand auf den Ventilkörper einwirken zu lassen. To intensify the breakaway forces or breakaway torques and better support the opening process, it may also be useful if the power supply of the electromagnets of two pairs of magnets via two separate surge power sources. This makes it possible, for example, to allow two opening pulses to act on the valve body with a short time interval.
Eine besonders bevorzugte Ausführungsform der Erfindung sieht vor, dass der Ventilkörper eine mittels einer Schwenkwelle verschwenkbare Klappe ist, und dass am Umfang von Klappe und Ventilsitz mindestens zwei Magnetpaare vorgesehen sind, die einander gegenüberliegend mit Abstand, insbesondere mit größtmöglichem Abstand, von der Schwenkwelle entfernt angeordnet sind. Bei dieser Ausgestaltung der Armatur und Anordnung der Magnetpaare ist es möglich, in Bezug auf die Schwenkwelle ein besonders großes Losbrechmoment zu erzeugen. Ein Ausführungsbeispiel der Erfindung wird im Folgenden anhand der Zeichnung näher erläutert. Es zeigen: A particularly preferred embodiment of the invention provides that the valve body is a pivotable by means of a pivot shaft flap, and that at least two pairs of magnets are provided on the circumference of the flap and valve seat, which are arranged opposite each other at a distance, in particular with the greatest possible distance from the pivot shaft are. In this embodiment of the fitting and arrangement of the magnet pairs, it is possible to generate a particularly large breakaway torque with respect to the pivot shaft. An embodiment of the invention is described below with reference to the drawing explained in more detail. Show it:
Figur 1 Schematisch einen Längsschnitt durch einer Vorrichtung gemäß der Erfindung Figure 1 Schematically a longitudinal section through a device according to the invention
Figur 2 : Eine Detailansicht des Bereichs A aus Figur 1 FIG. 2: a detailed view of the region A from FIG. 1
Die in der Zeichnung dargestellte Absperrarmatur weist einen mit dem Bezugszeichen 1 bezeichnetes Ventilgehäuse auf. Am inneren Umfang des Ventilgehäuses 1 befindet sich ein ringförmiger Ventilsitz 2, der an seinem inneren Umfang mit einer im Wesentlichen konisch gestalteten Dichtfläche 2a versehen ist. Innerhalb des Ventilsitzes 2 befindet sich eine als Ventilkörper dienende Klappe 3, die an ihrem äußeren Umfang eine Dichtfläche 3a aufweist, deren Form der Dichtfläche 2a des Ventilsitzes 2 angepasst ist. Zum Verschenken der Klappe 3 aus der in Figur 1 dargestellten Absperrstellung in die Öffnungsstellung dient eine als Kraftübertragungselement dienende Klappenwelle 4, die von einem nicht dargestellten, außerhalb des Gehäuses angeordneten Antrieb drehend angetrieben wird. Dieser Antrieb ist in Figur 1 durch den Bewegungspfeil 5 angedeutet. Damit die in der Zeichnung dargestellte Absperrarmatur dicht ist, werden die beiden Dichtflächen 2a und 3a von Ventilsitz 2 und Klappe 3 mit größtmöglicher Flächenpressung gegeneinander gepresst. Diese Flächenpressung wird beim Ausführungsbeispiel durch die Konizität dieser Dichtflächen verstärkt. Dabei kann es vorkommen, dass die Klappe 3 sich in dem Ventilsitz verklemmt und blockiert wird. Diese Blockade kann unter Umständen noch durch aus dem durchströmenden Fördermedium stammende Verkrustungen verstärkt werden. Das Aufbrechen dieser Blockade würde in diesem Fall den Antrieb 5 und die als Kraftübertragungselement dienende Klappenwelle 4 überfordern. Um das erforderliche Losbrechmoment aufzubringen, sind beim dargestellten Ausführungsbeispiel der als Ventilkörper dienenden Klappe 3 und dem Ventilsitz 2 aufeinander einwirkende Magnete 6a und 6b zugeordnet. Dabei ist der Magnet 6a an der Klappe 3 als Permanentmagnet ausgebildet, während der Magnet 6b am Ventilsitz 2 ist als Elektromagnet ausgebildet ist. Die Anordnung des Permanentmagneten 6a an der Klappe hat den Vorteil, dass zu dessen Stromversorgung keine Stromzuführung in die Klappe 3 notwendig ist. The shut-off valve shown in the drawing has a designated by the reference numeral 1 valve housing. At the inner circumference of the valve housing 1 is an annular valve seat 2, which is provided at its inner periphery with a substantially conical sealing surface 2a. Within the valve seat 2 is a valve body serving as a flap 3, which has on its outer periphery a sealing surface 3a, the shape of the sealing surface 2a of the valve seat 2 is adjusted. To give the flap 3 from the shut-off position shown in Figure 1 in the open position serves as a force transmission element serving flapper shaft 4 which is driven in rotation by a drive, not shown, arranged outside the housing. This drive is indicated in Figure 1 by the movement arrow 5. Thus, the shut-off valve shown in the drawing is tight, the two sealing surfaces 2a and 3a of valve seat 2 and 3 flap pressed with the greatest possible surface pressure against each other. This surface pressure is reinforced in the embodiment by the taper of these sealing surfaces. It may happen that the flap 3 is jammed in the valve seat and blocked. Under certain circumstances, this blockage can still be intensified by incrustations originating from the medium flowing through. The breaking of this blockade would overtax the drive 5 and serving as a force transmission element flap shaft 4 in this case. In order to apply the required breakaway torque, in the illustrated embodiment, the serving as a valve body flap 3 and the valve seat 2 interacting magnets 6a and 6b are assigned. In this case, the magnet 6a is formed on the flap 3 as a permanent magnet, while the magnet 6b on the valve seat 2 is designed as an electromagnet. The arrangement of the permanent magnet 6a on the flap has the advantage that no power supply to the flap 3 is necessary for its power supply.
Wie in Figur 2 im Detail dargestellt ist, ist erfindungsgemäß der dem Ventilsitz zugeordnete Elektromagnet 6b an eine Stoßstromquelle 7 angeschlossen, die kapazitiver Stromspeicher ausgebildet ist. Zur Einleitung des Öffnungsvorganges bei festsitzender Klappe 3 wird von der Stoßstromquelle 7 ein kurzer und hoher Stromimpuls auf den Elektromagneten 6b geschaltet. Dieser Elektromagnet erzeugt hierdurch kurzzeitig ein intensives Magnetfeld, welches abstoßend auf das Magnetfeld des in der Klappe 3 befindlichen Permanentmagneten 6a einwirkt. Die Magnetfelder des Permanentmagneten 6 a und des Elektromagneten 6b sind in Figur 2 durch Feldlinien 8 angedeutet. Die einander abstoßenden Magnetfelder des Permanentmagneten 6a und des Elektromagneten 6b erzeugen in Bezug auf die Schwenkwelle 4 einen intensives, im Öffnungssinne wirkendes Losbrechmoment, welches die festsitzende Klappe 3 aus ihrer Blockade löst. Den anschließenden Öffnungsvorgang übernimmt in herkömmlicher Art und Weise der Antrieb 5, der über die Schwenkwelle 4 auf die Klappe 3 einwirkt. As shown in detail in Figure 2, according to the invention of the valve seat associated electromagnet 6b is connected to a surge current source 7, the capacitive current storage is formed. To initiate the opening process with stuck flap 3, a short and high current pulse is switched to the electromagnet 6 b of the surge current source 7. As a result, this electromagnet briefly generates an intense magnetic field which acts repulsively on the magnetic field of the permanent magnet 6a located in the flap 3. The magnetic fields of the permanent magnet 6 a and the electromagnet 6 b are indicated in Figure 2 by field lines 8. The repulsive magnetic fields of the permanent magnet 6a and the electromagnet 6b generate with respect to the pivot shaft 4 an intense, acting in the opening direction breakaway torque, which triggers the stuck flap 3 from its blockage. The subsequent opening process takes place in a conventional manner, the drive 5, which acts on the flap 3 via the pivot shaft 4.
Die Anordnung der Magnete kann, wie in der Beschreibungseinleitung diskutiert worden ist, vielfältig variiert werden, solange an Ventilsitz und Ventilkörper ein Magnetpaar mit aufeinander einwirkenden Magneten vorhanden ist, von denen mindestens einer als Elektromagnet ausgebildet ist, der an eine Stoßstromquelle anschließbar ist, deren Stromimpuls ein abstoßendes Magnetfeld erzeugt, welches im Öffnungssinne auf den beweglichen Ventilkörper der Absperrarmatur einwirkt. As has been discussed in the introduction to the introduction, the arrangement of the magnets can be varied in many ways, as long as there is a magnet pair with interacting magnets on the valve seat and valve body, at least one of which is designed as an electromagnet which can be connected to a surge current source whose current pulse generates a repulsive magnetic field, which acts in the opening direction on the movable valve body of the shut-off valve.

Claims

Patentansprüche claims
1.) Vorrichtung zum Öffnen einer Absperrarmatur, die ein 1.) Device for opening a shut-off valve, the one
- Ventilgehäuse (1) und einen in dem Ventilgehäuse(l) angeordneten Ventilsitz (2) aufweist, - valve housing (1) and in the valve housing (l) arranged valve seat (2),
- welchem ein Ventilkörper (3) zugeordnet ist, - which is associated with a valve body (3),
- der über eine außerhalb des Ventilgehäuses (1) liegenden Antrieb (5) über Kraftübertragungselemente betätigbar ist, - Which is actuated via a outside of the valve housing (1) lying drive (5) via power transmission elements,
- wobei an dem Ventilkörper (3) und an dem Ventilsitz (2) aufeinander einwirkende Magnete (6a,6b) vorgesehen sind, die ein Magnetpaar bilden und von denen einer als Elektromagnet (6b) ausgebildet ist, dessen Magnetfeld auf den anderen Magneten (6a) abstoßend einwirkt, d a d u r c h g e k e n n z e i c h n e t , dass dem Elektromagneten (6b) zur Stromversorgung eine Stoßstromquelle (7) zugeordnet ist, deren Stromimpuls das abstoßende Magnetfeld des Elektromagneten (6b) erzeugt. - Wherein on the valve body (3) and on the valve seat (2) interacting magnets (6a, 6b) are provided which form a pair of magnets and one of which is designed as an electromagnet (6b) whose magnetic field on the other magnet (6a ) acts repulsively, characterized in that the electromagnet (6b) for power supply, a surge current source (7) is associated, whose current pulse generates the repulsive magnetic field of the electromagnet (6b).
2.) Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Stoßstromquelle (7) ein kapazitiver Stromspeicher ist. 2.) Device according to claim 1, characterized in that the surge current source (7) is a capacitive current storage.
3. ) Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die am Ventilkörper (3) angeordneten Magnete Permanentmagnete (6a) sind. 3.) Apparatus according to claim 1, characterized in that the valve body (3) arranged magnets are permanent magnets (6a).
4. ) Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die am Ventilsitz angeordneten Magnete Permanentmagnete sind. 4.) Device according to claim 1, characterized in that the magnets arranged on the valve seat are permanent magnets.
5. ) Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass sowohl die am Ventilsitz als auch die am Ventilkörper angeordneten Magnete Elektromagnete sind. 5.) Device according to claim 1, characterized in that both the valve seat and the valve body arranged magnets are electromagnets.
6. ) Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Stromversorgung der am Ventilsitz oder der am Ventilkörper angeordneten Elektromagnete über eine Gleichstromquelle erfolgt. 6.) Apparatus according to claim 5, characterized in that the power supply to the valve seat or arranged on the valve body electromagnets via a DC power source.
7. ) Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass die Gleichstromquelle polumschaltbar an die Elektromagnete angeschlossen ist. 7.) Apparatus according to claim 6, characterized in that the DC power source is connected polumschaltbar to the electromagnets.
8. ) Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Stromversorgung der Elektromagnete von zwei Magnetpaaren über zwei separate Stoßstromquellen erfolgt. 8.) Apparatus according to claim 5, characterized in that the power supply of the electromagnets of two pairs of magnets via two separate surge current sources.
9. ) Vorrichtung nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, dass der Ventilkörper (3) eine Klappe ist und das am Umfang von Klappe und Ventilsitz (2) mindestens zwei Magnetpaare (6a, 6b) vorgesehen sind, die einander gegenüberliegend mit Abstand, insbesondere mit größtmöglichem Abstand von der Schwenkwelle (4) der Klappe entfernt angeordnet sind. 9.) Device according to one of the preceding claims, characterized in that the valve body (3) is a flap and at the periphery of the flap and valve seat (2) at least two pairs of magnets (6a, 6b) are provided, which are opposite each other by far, especially with the greatest possible distance from the pivot shaft (4) of the flap are arranged away.
PCT/EP2017/053581 2016-02-25 2017-02-17 Armature having opening support WO2017144354A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016103323.5A DE102016103323A1 (en) 2016-02-25 2016-02-25 Valve with opening support
DE102016103323.5 2016-02-25

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1232424B (en) * 1965-11-29 1967-01-12 Gerhard Wollank Dipl Phys Electromagnetic, quick-closing valve
US3325140A (en) 1964-08-20 1967-06-13 Babcock & Wilcox Co Electromagnetically responsive damper sealing and opening device
GB2192974A (en) * 1986-07-23 1988-01-27 Boc Group Inc Gate valve with magnetic closure for use with vacuum equipment
US6676508B1 (en) * 2003-04-22 2004-01-13 Gerald Graham Magnetically controlled flow system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3325140A (en) 1964-08-20 1967-06-13 Babcock & Wilcox Co Electromagnetically responsive damper sealing and opening device
DE1232424B (en) * 1965-11-29 1967-01-12 Gerhard Wollank Dipl Phys Electromagnetic, quick-closing valve
GB2192974A (en) * 1986-07-23 1988-01-27 Boc Group Inc Gate valve with magnetic closure for use with vacuum equipment
US6676508B1 (en) * 2003-04-22 2004-01-13 Gerald Graham Magnetically controlled flow system

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