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EP3988221B1 - Rotor nozzle - Google Patents

Rotor nozzle Download PDF

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Publication number
EP3988221B1
EP3988221B1 EP21200848.6A EP21200848A EP3988221B1 EP 3988221 B1 EP3988221 B1 EP 3988221B1 EP 21200848 A EP21200848 A EP 21200848A EP 3988221 B1 EP3988221 B1 EP 3988221B1
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EP
European Patent Office
Prior art keywords
nozzle
drive
nozzles
rotor
bore
Prior art date
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Active
Application number
EP21200848.6A
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German (de)
French (fr)
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EP3988221A1 (en
Inventor
Fabian STOFFERS
Christian Stoffers
Jannick Hinschen
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.)
Hammelmann GmbH
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Hammelmann GmbH
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Publication of EP3988221A1 publication Critical patent/EP3988221A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
    • B05B13/0627—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies
    • B05B13/0636—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies by means of rotatable spray heads or nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/025—Rotational joints
    • B05B3/027—Rotational joints with radial fluid passages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/04—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet
    • B05B3/06—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet by jet reaction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
    • B08B9/0433—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes provided exclusively with fluid jets as cleaning tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening

Definitions

  • the invention relates to a rotor nozzle according to the preamble of claim 1.
  • Such rotor nozzles are used, for example, and in particular, for cleaning the inside of pipes, for example to remove deposits in heat exchanger pipes.
  • the fluid used for cleaning is under a high pressure of up to 4000 bar.
  • the rotor nozzle has a nozzle head rotatably mounted on a support element with at least one, usually several, removal nozzles arranged at the same angular distance from one another.
  • removal nozzles are permanently connected to a central axial bore of the carrier element in a fluid-open manner, whereby the pressurized fluid exits laterally from the nozzle head via the removal nozzles when in operation.
  • the removal nozzles are aligned at a distance from the radial so that when the liquid emerges, a torque is generated which causes the nozzle head to rotate.
  • the braking of the rotor nozzle can be achieved by an active brake, e.g. an eddy current brake, or by friction on the jacket surface caused by air or the escaping liquid.
  • an active brake e.g. an eddy current brake
  • the removal nozzles of the well-known rotor nozzle therefore each fulfil two tasks, namely the removal of coating adhering to the inner surface of a pipe to be processed and that of a rotating drive.
  • This design results in increasing wear of the nozzle bores, particularly in the form of an increase in their diameter, which increases the volume flow while the operating pressure remains the same.
  • the outer surface of the nozzle head can be destroyed by the resulting increased centrifugal forces, whereby fragments may break off from the outer surface and can no longer be removed from the pipe to be processed, so that further use of the pipe is impossible.
  • the nozzle head In addition to the risk of damage to the pipe being processed, the nozzle head itself is no longer usable if it is worn out and therefore also represents a problem from an economic point of view.
  • a generic rotor nozzle according to the preamble of claim 1 is known, in which drive nozzles are provided for driving the rotor nozzle, which run at a distance from the radial and open into an annular chamber located between the rotatingly drivable nozzle head and the carrier element, which extends over the entire length of the nozzle head.
  • a pipe cleaning device for sewer lines is known in which the drive nozzles are aligned at an angle to the longitudinal axis of a stator and rotor.
  • the invention is based on the object of further developing a rotor nozzle of the generic type in such a way that its functional reliability is improved and its service life is increased.
  • the at least one drive nozzle is connected to the axial bore via a through hole in the carrier element, depending on the rotational position of the nozzle head, so that the at least one The drive nozzle is briefly supplied with the high-pressure liquid by bringing the through-bore connected to the axial bore into alignment with the inlet of at least one drive nozzle.
  • the removal nozzles can be operated with the optimum fluid pressure to remove deposits on the inner surfaces of the respective pipe
  • the pressure required for the function of the drive nozzles can be influenced by appropriate design of the drive nozzle so that the necessary rotation is guaranteed, but at the same time the wear the drive nozzle is minimized due to its position away from the radial.
  • the removal nozzles are fed jointly and simultaneously with the pressurized liquid, for which purpose a circumferential annular chamber can be provided, which is open to the liquid on the one hand and connected to the removal nozzles and on the other hand via cross holes to the axial hole of the carrier element. Regardless of the speed of the nozzle head, the removal nozzles are permanently supplied with high-pressure liquid. This means that the removal nozzles are used exclusively for cleaning the inner wall of a pipe.
  • the drive nozzles can be controlled in terms of their use.
  • through-holes are led through the wall of the carrier element, which are in fluid-open connection with the drive nozzles when the nozzle head is rotated in the appropriate position.
  • the drive nozzles can be briefly supplied with the high-pressure liquid, for example twice per revolution, by aligning two of such through-holes connected to the axial bore with the inlet of the drive nozzle.
  • nozzle wear can be detected more reliably and bursting of the nozzle head casing can be avoided. This results in a significant economic advantage, since replacing the rotor nozzle or nozzle head, which would entail an interruption in operation, is no longer necessary, if at all.
  • a rotor nozzle is shown, with a carrier element 1 and a nozzle head 4, which is rotatably mounted on a support pin 2 of the carrier element 1, wherein a hydraulic drive is provided for the rotary movement.
  • the carrier element 1 has an axial bore 3, which is designed as a blind bore leading into the support pin 2 and through which a liquid under high pressure can be guided.
  • removal nozzles 5 are provided in the nozzle head 4, distributed over the circumference, which are connected to the axial bore 3 in a fluid-open manner, by means of which, for example, dirt or the like adhering to the inner wall of a pipe can be removed.
  • nozzle bores 6 are connected to an annular chamber 10, which in turn is fed via transverse bores 11 in the support pin 2 with the fluid under high pressure, which is guided through the axial bore 3.
  • a series of drive nozzles 7, which are also distributed around the circumference, are arranged in the nozzle head 4 in front of the removal nozzles 5 in the flow direction of the liquid, via which the liquid, which is also supplied from the axial bore 3, can be guided in such a way that the nozzle head 4 rotates relative to the carrier element 1.
  • the drive nozzles 7 are arranged at a distance A to the radial R, wherein the distance A forms a lever arm.
  • the drive nozzles 7 can each be brought into operative connection with at least one through-bore 9 of the support pin 2 via a feed bore 8 in the nozzle head 4 for the passage of liquid, which through-bore 9 is open towards the axial bore 3.
  • each drive nozzle 7 is used twice for each rotation of the nozzle head 4. Furthermore, the drive nozzles 7 are arranged in front of the removal nozzles, as seen in the flow direction of the liquid.
  • both the drive nozzles 7 and the through holes 9 is merely an example. Other arrangements are also conceivable both with regard to the number of drive nozzles 7 and/or the through holes 9 and with regard to the distances A to the radials R.
  • the feed holes 8 are expediently arranged parallel to an associated radial R. However, it is crucial that the liquid exits the drive nozzle 7 at a distance A from the radial R.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)

Description

Die Erfindung betrifft eine Rotordüse gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a rotor nozzle according to the preamble of claim 1.

Solche Rotordüsen finden beispielsweise und insbesondere bei der Innenreinigung von Rohren Verwendung, um z.B. Ablagerungen in WärmetauscherRohren zu entfernen. Dabei steht das Fluid, mit dem die Reinigung erfolgt, unter einem hohen Druck von bis 4000 bar.Such rotor nozzles are used, for example, and in particular, for cleaning the inside of pipes, for example to remove deposits in heat exchanger pipes. The fluid used for cleaning is under a high pressure of up to 4000 bar.

Die Rotordüse weist einen auf einem Trägerelement drehbar gelagerten Düsenkopf mit mindestens einer, üblicherweise mehreren in gleichem Winkelabstand zueinander angeordnete Abtragsdüsen auf.The rotor nozzle has a nozzle head rotatably mounted on a support element with at least one, usually several, removal nozzles arranged at the same angular distance from one another.

Diese Abtragsdüsen stehen flüssigkeitsoffen dauerhaft mit einer zentralen Axialbohrung des Trägerelements in Verbindung, wobei in Funktion die unter Druck stehende Flüssigkeit über die Abtragsdüsen seitlich aus dem Düsenkopf austritt.These removal nozzles are permanently connected to a central axial bore of the carrier element in a fluid-open manner, whereby the pressurized fluid exits laterally from the nozzle head via the removal nozzles when in operation.

Die Abtragsdüsen sind abständig zur Radialen ausgerichtet, so dass sich beim Austritt der Flüssigkeit ein Drehmoment ergibt, durch das der Düsenkopf in Rotation versetzt wird.The removal nozzles are aligned at a distance from the radial so that when the liquid emerges, a torque is generated which causes the nozzle head to rotate.

Die Abbremsung der Rotordüse kann über eine aktive Bremse, z.B. eine Wirbelstrombremse oder über Reibung an der Mantelfläche durch Luft oder die austretende Flüssigkeit erfolgen.The braking of the rotor nozzle can be achieved by an active brake, e.g. an eddy current brake, or by friction on the jacket surface caused by air or the escaping liquid.

Die Abtragsdüsen der bekannten Rotordüse erfüllen also jeweils zwei Aufgaben, nämlich zum einen den Abtrag von an der Innenfläche eines zu bearbeitenden Rohres anhaftendem Belag sowie die eines rotierenden Antriebs.The removal nozzles of the well-known rotor nozzle therefore each fulfil two tasks, namely the removal of coating adhering to the inner surface of a pipe to be processed and that of a rotating drive.

Allerdings hat sich gezeigt, dass damit erhebliche Nachteile verbunden sind, insbesondere mit zunehmender Betriebsdauer.However, it has been shown that this is associated with considerable disadvantages, particularly as the operating time increases.

So ist durch diese Konzeption ein zunehmender Verschleiß der Düsenbohrungen zu beklagen, insbesondere in der Form, dass sich ihr Durchmesser vergrößert, wodurch sich der Volumenstrom erhöht, bei gleichbleibendem Betriebsdruck.This design results in increasing wear of the nozzle bores, particularly in the form of an increase in their diameter, which increases the volume flow while the operating pressure remains the same.

Dies führt zu einem höheren Drehmoment und somit zu einer höheren Drehzahl, bei der sich jedoch das Reinigungsergebnis verschlechtert.This leads to a higher torque and thus to a higher speed, but the cleaning result deteriorates.

Darüber hinaus kann die Mantelfläche des Düsenkopfes durch die sich ergebenden erhöhten Fliehkräfte zerstört werden, wobei sich unter Umständen Bruchstücke aus der Mantelfläche lösen, die nicht mehr aus dem zu bearbeitendem Rohr entfernt werden können, so dass eine weitere Nutzung des Rohres ausgeschlossen ist.In addition, the outer surface of the nozzle head can be destroyed by the resulting increased centrifugal forces, whereby fragments may break off from the outer surface and can no longer be removed from the pipe to be processed, so that further use of the pipe is impossible.

Bei ungebremsten Rotordüsen, also bei solchen ohne aktive Bremsung, reicht schon ein geringer Verschleiß der Düsenbohrungen aus, um den Mantel des Düsenkopfes durch die höhere Drehzahl zu zerstören. Der zunächst geringe Volumenstromanstieg ist, wenn überhaupt, von der Bedienungsperson nur schwer erkennbar.In the case of unbraked rotor nozzles, i.e. those without active braking, even a small amount of wear on the nozzle bores is enough to destroy the casing of the nozzle head due to the higher speed. The initially small increase in volume flow is difficult, if not noticeable at all, for the operator.

Neben der Gefahr der Beschädigung des zu bearbeitenden Rohres ist auch der Düsenkopf selbst bei entsprechendem Verschleiß nicht mehr nutzbar und stellt daher auch aus wirtschaftlicher Hinsicht ein Problem dar.In addition to the risk of damage to the pipe being processed, the nozzle head itself is no longer usable if it is worn out and therefore also represents a problem from an economic point of view.

Aus der JP 2010-214295A ist eine gattungsgemäße Rotordüse gemäß dem Oberbegriff des Anspruchs 1 bekannt, bei der zum Antrieb der Rotordüse Antriebsdüsen vorgesehen sind, die mit Abstand zur Radialen verlaufen und in eine zwischen dem rotierend antreibbaren Düsenkopf und dem Trägerelement befindliche Ringkammer münden, die sich über die gesamte Länge des Düsenkopfes erstreckt.From the JP 2010-214295A a generic rotor nozzle according to the preamble of claim 1 is known, in which drive nozzles are provided for driving the rotor nozzle, which run at a distance from the radial and open into an annular chamber located between the rotatingly drivable nozzle head and the carrier element, which extends over the entire length of the nozzle head.

Aus der EP 0 077 562 A2 ist ein Rohrreinigungsgerät für Kanalisationsleitungen bekannt, bei dem die Antriebsdüsen winklig zur Längsachse eines Stators und Rotors ausgerichtet sind.From the EP 0 077 562 A2 A pipe cleaning device for sewer lines is known in which the drive nozzles are aligned at an angle to the longitudinal axis of a stator and rotor.

Der Erfindung liegt die Aufgabe zugrunde, eine Rotordüse der gattungsgemäßen Art so weiterzuentwickeln, dass ihre Funktionssicherheit verbessert und ihre Standzeit erhöht wird.The invention is based on the object of further developing a rotor nozzle of the generic type in such a way that its functional reliability is improved and its service life is increased.

Diese Aufgabe wird durch eine Rotordüse mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a rotor nozzle having the features of claim 1.

Gemäß der Erfindung steht die mindestens eine Antriebsdüse je nach Rotationsstellung des Düsenkopfes über eine Durchgangsbohrung des Trägerelementes mit der Axialbohrung in Verbindung, so dass die mindestens eine Antriebsdüse kurzzeitig mit der unter Hochdruck stehenden Flüssigkeit gespeist wird, indem die mit der Axialbohrung in Verbindung stehende Durchgangsbohrung mit dem Eingang der mindestens einen Antriebsdüse in Deckung gebracht wird.According to the invention, the at least one drive nozzle is connected to the axial bore via a through hole in the carrier element, depending on the rotational position of the nozzle head, so that the at least one The drive nozzle is briefly supplied with the high-pressure liquid by bringing the through-bore connected to the axial bore into alignment with the inlet of at least one drive nozzle.

Während die Abtragsdüsen mit dem zum Abtrag der Ablagerungen auf den Innenflächen des jeweiligen Rohres mit optimalem Druck der Flüssigkeit betrieben werden können, ist der für die Funktion der Antriebsdüsen notwendige Druck durch entsprechende Gestaltung der Antriebsdüse so beeinflussbar, dass die notwendige Rotation gewährleistet ist, gleichzeitig jedoch der Verschleiß der Antriebsdüse aufgrund der abständig zur Radialen ausgerichteten Position minimiert wird.While the removal nozzles can be operated with the optimum fluid pressure to remove deposits on the inner surfaces of the respective pipe, the pressure required for the function of the drive nozzles can be influenced by appropriate design of the drive nozzle so that the necessary rotation is guaranteed, but at the same time the wear the drive nozzle is minimized due to its position away from the radial.

Die Abtragsdüsen werden gemeinsam und gleichzeitig mit der unter Druck stehenden Flüssigkeit gespeist, wozu eine umfängliche Ringkammer vorgesehen sein kann, die flüssigkeitsoffen einerseits mit den Abtragsdüsen und andererseits über Querbohrungen mit der Axialbohrung des Trägerelements in Verbindung steht. Unabhängig von der Drehzahl des Düsenkopfes werden die Abtragsdüsen permanent mit Hochdruck-Flüssigkeit versorgt. D.h. die Abtragsdüsen dienen ausschließlich der Reinigung der Innenwand eines Rohres.The removal nozzles are fed jointly and simultaneously with the pressurized liquid, for which purpose a circumferential annular chamber can be provided, which is open to the liquid on the one hand and connected to the removal nozzles and on the other hand via cross holes to the axial hole of the carrier element. Regardless of the speed of the nozzle head, the removal nozzles are permanently supplied with high-pressure liquid. This means that the removal nozzles are used exclusively for cleaning the inner wall of a pipe.

Die Antriebsdüsen hingegen können hinsichtlich ihres Einsatzes gesteuert werden. Dazu sind Durchgangsbohrungen durch die Wandung des Trägerelements geführt, die bei entsprechender Rotationsstellung des Düsenkopfes mit den Antriebsdüsen flüssigkeitsoffen in Verbindung stehen.The drive nozzles, however, can be controlled in terms of their use. For this purpose, through-holes are led through the wall of the carrier element, which are in fluid-open connection with the drive nozzles when the nozzle head is rotated in the appropriate position.

So können die Antriebsdüsen kurzzeitig mit der unter Hochdruck stehenden Flüssigkeit gespeist werden, beispielsweise pro Umdrehung zweimal, indem zwei solcher mit der Axialbohrung in Verbindung stehende Durchgangsbohrungen mit dem Eingang der Antriebsdüse in Deckung gebracht werden.In this way, the drive nozzles can be briefly supplied with the high-pressure liquid, for example twice per revolution, by aligning two of such through-holes connected to the axial bore with the inlet of the drive nozzle.

Aufgrund der sehr kurzen Beaufschlagung der Antriebsdüsen mit Hochdruck-Flüssigkeit während der Rotation des Düsenkopfes ist der Verschleiß der Antriebsdüsen deutlich reduziert. Dies wiederum führt über einen längeren Zeitraum als bisher zu einer konstant bleibenden Drehzahl des Düsenkopfes mit Verbesserung des Reinigungsergebnisses.Due to the very short exposure of the drive nozzles to high-pressure liquid during the rotation of the nozzle head, the wear on the drive nozzles is significantly reduced. This in turn leads to a constant speed of the nozzle head over a longer period of time than before, improving the cleaning result.

Überdies kann ein Düsenverschleiß sicherer erkannt und ein Bersten des Mantels des Düsenkopfes vermieden werden. Daraus ergibt sich ein wesentlicher wirtschaftlicher Vorteil, da eine Ersatzbeschaffung der Rotordüse bzw. des Düsenkopfes einhergehend mit einer Betriebsunterbrechung in deutlich längeren Zeitabständen, wenn überhaupt erforderlich wird.In addition, nozzle wear can be detected more reliably and bursting of the nozzle head casing can be avoided. This results in a significant economic advantage, since replacing the rotor nozzle or nozzle head, which would entail an interruption in operation, is no longer necessary, if at all.

Weitere vorteilhafte Ausbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Further advantageous embodiments of the invention are characterized in the subclaims.

Ein Ausführungsbeispiel wird nachfolgend anhand der beigefügten Zeichnungen beschrieben.An embodiment is described below with reference to the accompanying drawings.

Es zeigen:

Figur 1
eine erfindungsgemäße Rotordüse in einem Längsschnitt
Figur 2
einen Querschnitt durch die Rotordüse im Bereich der Abtragsdüsen
Figur 3
einen Querschnitt durch die Rotordüse im Bereich der Antriebsdüsen.
They show:
Figure 1
a rotor nozzle according to the invention in a longitudinal section
Figure 2
a cross-section through the rotor nozzle in the area of the removal nozzles
Figure 3
a cross-section through the rotor nozzle in the area of the drive nozzles.

In der Figur 1 ist eine Rotordüse dargestellt, mit einem Trägerelement 1 und einem Düsenkopf 4, der drehbar auf einem Tragzapfen 2 des Trägerelements 1 gelagert ist, wobei zur Drehbewegung ein hydraulischer Antrieb vorgesehen ist.In the Figure 1 a rotor nozzle is shown, with a carrier element 1 and a nozzle head 4, which is rotatably mounted on a support pin 2 of the carrier element 1, wherein a hydraulic drive is provided for the rotary movement.

Hierzu weist das Trägerelement 1 eine Axialbohrung 3 auf, die als bis in den Tragzapfen 2 geführte Sackbohrung ausgebildet ist und über die eine unter hohem Druck stehende Flüssigkeit führbar ist.For this purpose, the carrier element 1 has an axial bore 3, which is designed as a blind bore leading into the support pin 2 and through which a liquid under high pressure can be guided.

Wie insbesondere die Figur 2 sehr deutlich wiedergibt, sind im Düsenkopf 4 über den Umfang verteilt Abtragsdüsen 5 vorgesehen, die flüssigkeitsoffen mit der Axialbohrung 3 in Verbindung stehen, mittels derer beispielsweise an der Innenwand eines Rohres anhaftende Verschmutzungen oder dergleichen abtragbar sind.As in particular the Figure 2 As can be clearly seen in the figure, removal nozzles 5 are provided in the nozzle head 4, distributed over the circumference, which are connected to the axial bore 3 in a fluid-open manner, by means of which, for example, dirt or the like adhering to the inner wall of a pipe can be removed.

Für einen ständigen und für alle Abtragsdüsen 5 gleichmäßigen Flüssigkeitsstrom stehen Düsenbohrungen 6 mit einer Ringkammer 10 in Verbindung, die wiederum über Querbohrungen 11 im Tragzapfen 2 mit der unter hohem Druck stehenden Flüssigkeit, die durch die Axialbohrung 3 geführt ist, gespeist wird.To ensure a constant and uniform fluid flow for all removal nozzles 5, nozzle bores 6 are connected to an annular chamber 10, which in turn is fed via transverse bores 11 in the support pin 2 with the fluid under high pressure, which is guided through the axial bore 3.

Zum Drehantrieb des Düsenkopfes 4 ist in Strömungsrichtung der Flüssigkeit vor den Abtragsdüsen 5 angeordnet eine Reihe gleichfalls umfänglich verteilter Antriebsdüsen 7 in den Düsenkopf 4 eingebracht, über die ebenfalls aus der Axialbohrung 3 zugeführte Flüssigkeit führbar ist und zwar derart, dass der Düsenkopf 4 gegenüber dem Trägerelement 1 rotiert.In order to drive the nozzle head 4 in rotation, a series of drive nozzles 7, which are also distributed around the circumference, are arranged in the nozzle head 4 in front of the removal nozzles 5 in the flow direction of the liquid, via which the liquid, which is also supplied from the axial bore 3, can be guided in such a way that the nozzle head 4 rotates relative to the carrier element 1.

Ein dazu notwendiges Drehmoment wird gemäß der Erfindung dadurch erreicht, dass, wie besonders deutlich in der Figur 3 zu erkennen ist, die Antriebsdüsen 7 mit einem Abstand A zur Radialen R angeordnet ist, wobei der Abstand A einen Hebelarm bildet.The torque required for this is achieved according to the invention by, as is particularly clear in the Figure 3 As can be seen, the drive nozzles 7 are arranged at a distance A to the radial R, wherein the distance A forms a lever arm.

Zur Aufbringung des Drehmoments sind die Antriebsdüsen 7 jeweils über eine Zuführbohrung 8 im Düsenkopf 4 zum Flüssigkeitsdurchtritt mit mindestens einer Durchgangsbohrung 9 des Tragzapfens 2 in Wirkverbindung bringbar, die zur Axialbohrung 3 hin offen ist.In order to apply the torque, the drive nozzles 7 can each be brought into operative connection with at least one through-bore 9 of the support pin 2 via a feed bore 8 in the nozzle head 4 for the passage of liquid, which through-bore 9 is open towards the axial bore 3.

Im Beispiel sind bei Anordnung von vier Antriebsdüsen 7, die in gleichem Winkelabstand zueinander angeordnet sind, zwei sich gegenüberliegende Durchgangsbohrungen 9 vorgesehen, so dass jede Antriebsdüse 7 bei jeder Umdrehung des Düsenkopfes 4 zweimal zum Einsatz kommt. Im Übrigen sind die Antriebsdüsen 7, in Strömungsrichtung der Flüssigkeit gesehen, vor den Abtragsdüsen angeordnet.In the example, when four drive nozzles 7 are arranged at the same angular distance from one another, two opposing through holes 9 are provided so that each drive nozzle 7 is used twice for each rotation of the nozzle head 4. Furthermore, the drive nozzles 7 are arranged in front of the removal nozzles, as seen in the flow direction of the liquid.

Die gezeigte Anordnung sowohl der Antriebsdüsen 7 wie auch der Durchgangsbohrungen 9 ist lediglich beispielhaft. Denkbar sind auch andere Anordnungen sowohl hinsichtlich der Anzahl der Antriebsdüsen 7 und/oder der Durchgangsbohrungen 9 wie auch hinsichtlich der Abstände A zu den Radialen R.The arrangement shown of both the drive nozzles 7 and the through holes 9 is merely an example. Other arrangements are also conceivable both with regard to the number of drive nozzles 7 and/or the through holes 9 and with regard to the distances A to the radials R.

Zweckmäßigerweise sind die Zuführbohrungen 8 parallel zu einer zugeordneten Radialen R angeordnet. Entscheidend ist jedoch, dass der Flüssigkeitsaustritt aus der Antriebsdüse 7 mit Abstand A zur Radialen R erfolgt.The feed holes 8 are expediently arranged parallel to an associated radial R. However, it is crucial that the liquid exits the drive nozzle 7 at a distance A from the radial R.

BezugszeichenlisteList of reference symbols

11
Trägerelementsupport element
22
Tragzapfentrunnion
33
Axialbohrungaxial bore
44
Düsenkopfnozzle head
55
Abtragsdüseremoval nozzle
66
Düsenbohrungennozzle holes
77
Antriebsdüsepropulsion nozzle
88
Zuführbohrungfeed hole
99
Durchgangsbohrungthrough hole
1010
Ringkammerannular chamber
1111
Querbohrungcross-drilling
AA
AbstandDistance
RR
RadialeRadiale

Claims (10)

  1. Rotor nozzle, having a carrier element (1) which has an axial bore (3) for supplying a pressurized liquid, a nozzle head (4) which is rotatably mounted thereon and can be driven in rotation by a hydraulically generated torque, which has at least one laterally emerging removal nozzle (5) which is connected to the axial bore (3) in a fluid-open manner, the removal nozzle (5) being radially aligned and the nozzle head (4) having at least one laterally emerging, separate drive nozzle (7), which extends at a distance (A) from the radial (R), characterized in that the at least one drive nozzle (7) is connected to the axial bore (3) via a through bore (9) of the support element (1), depending on the rotational position of the nozzle head (4), so that the at least one drive nozzle (7) is briefly fed with the liquid under high pressure by bringing the through bore (9) connected to the axial bore (3) into alignment with the inlet of the at least one drive nozzle (7).
  2. Rotor nozzle according to claim 1, characterized in that several drive nozzles (7) distributed over the circumference are provided, which are connected via feed bores (8) of the drive nozzles (7) with the through bores (9) can be brought into operative connection.
  3. Rotor nozzle according to claim 1 or 2, characterized in that the through bore (9) is radially aligned.
  4. Rotor nozzle according to one of the preceding claims, characterized in that when several drive nozzles (7) are arranged, they are arranged at the same or different angular distance from each other.
  5. Rotor nozzle according to one of the preceding claims, characterized in that a feed bore (8) of the drive nozzle (7) runs parallel to the radial (R).
  6. Rotor nozzle according to one of the preceding claims, characterized in that the drive nozzles (7) are positioned in the direction of flow of the liquid upstream of the removal nozzles (5).
  7. Rotor nozzle according to one of the preceding claims, characterized in that the removal nozzles (5) open into a circumferential annular chamber (10), each of which is connected to the axial bore (3) via a transverse bore (11).
  8. Rotor nozzle according to one of the preceding claims, characterized in that that a plurality of through bores (9) are provided.
  9. Rotor nozzle according to one of the preceding claims, characterized in that two through bores (9) are provided which are arranged opposite each other.
  10. Rotor nozzle according to one of the preceding claims, characterized in that the drive nozzles (7) can be brought into operative connection with the through bores (9) at intervals during operation of the rotor nozzle.
EP21200848.6A 2020-10-21 2021-10-05 Rotor nozzle Active EP3988221B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020127697.4A DE102020127697B3 (en) 2020-10-21 2020-10-21 Rotor nozzle

Publications (2)

Publication Number Publication Date
EP3988221A1 EP3988221A1 (en) 2022-04-27
EP3988221B1 true EP3988221B1 (en) 2024-10-02

Family

ID=78078090

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21200848.6A Active EP3988221B1 (en) 2020-10-21 2021-10-05 Rotor nozzle

Country Status (6)

Country Link
US (1) US20220118466A1 (en)
EP (1) EP3988221B1 (en)
DE (1) DE102020127697B3 (en)
DK (1) DK3988221T3 (en)
ES (1) ES2997998T3 (en)
PL (1) PL3988221T3 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1695749A (en) * 1926-05-26 1928-12-18 George D Watson Means for cleaning casings
US1715767A (en) * 1927-12-17 1929-06-04 Flore Joseph Le Casing-shoe nozzle
DE3141581A1 (en) * 1981-10-20 1983-05-05 Albrecht Wolhusen Wüthrich PIPE CLEANING DEVICE FOR DUCTING PIPES
US5195585A (en) * 1991-07-18 1993-03-23 Otis Engineering Corporation Wireline retrievable jet cleaning tool
US6189618B1 (en) * 1998-04-20 2001-02-20 Weatherford/Lamb, Inc. Wellbore wash nozzle system
JP2010214295A (en) 2009-03-17 2010-09-30 Sugino Mach Ltd Nozzle for cleaning inside of pipe
US9399230B2 (en) * 2014-01-16 2016-07-26 Nlb Corp. Rotating fluid nozzle for tube cleaning system
RU2017145614A (en) * 2017-12-25 2019-06-25 Общество с ограниченной ответственностью "Перфобур" MILLING MACHINE WITH SMALL-SIZE HYDRAULIC WAKING ENGINE

Also Published As

Publication number Publication date
DE102020127697B3 (en) 2021-11-04
DK3988221T3 (en) 2025-01-02
US20220118466A1 (en) 2022-04-21
EP3988221A1 (en) 2022-04-27
ES2997998T3 (en) 2025-02-18
PL3988221T3 (en) 2025-06-09

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