EP1660835B1 - Cleaning of a furnace - Google Patents

Cleaning of a furnace Download PDF

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Publication number
EP1660835B1
EP1660835B1 EP04786698A EP04786698A EP1660835B1 EP 1660835 B1 EP1660835 B1 EP 1660835B1 EP 04786698 A EP04786698 A EP 04786698A EP 04786698 A EP04786698 A EP 04786698A EP 1660835 B1 EP1660835 B1 EP 1660835B1
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EP
European Patent Office
Prior art keywords
hose
axis
nozzle head
flue
drum
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EP04786698A
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German (de)
French (fr)
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EP1660835A1 (en
Inventor
Georg BRÜNDERMANN
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Individual
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Individual
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Priority to PL04786698T priority Critical patent/PL1660835T3/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
    • F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
    • F23J3/026—Cleaning furnace tubes; Cleaning flues or chimneys cleaning the chimneys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G15/00—Details
    • F28G15/04—Feeding and driving arrangements, e.g. power operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G3/00—Rotary appliances
    • F28G3/16—Rotary appliances using jets of fluid for removing debris
    • F28G3/166—Rotary appliances using jets of fluid for removing debris from external surfaces of heat exchange conduits

Definitions

  • the invention relates to a device for cleaning a flue of a combustion system.
  • a device for cleaning a flue in which a hose is guided from above into the flue.
  • the hose is rolled up on a hose reel.
  • the hose reel In order to guide the hose further in the vertical direction into the flue, the hose reel is rotated about its axis so that the hose unrolls from the hose reel.
  • a nozzle head At the end of the hose in the flue, there is a nozzle head with several nozzles pointing in different directions.
  • the nozzles serve to inject water, which is passed through the hose to the nozzle head, against inner walls of the flue gas duct or pipes located therein. The impingement of the water jets should clean the surfaces in question.
  • the height of the nozzle head in the flue gas duct is varied during the cleaning process.
  • the nozzle head is rotatably connected to the hose.
  • a driven by the flow of water impeller sets the nozzle head by means of a gear in rotation.
  • Impeller and gearbox are arranged in the nozzle head. The rotation of the nozzle head ensures that the inner walls of the flue are completely cleaned in a horizontal plane.
  • a failure of the impeller or the gear in the nozzle head can have serious consequences.
  • the nozzle head can not turn anymore.
  • the stationary in their direction, exiting from the nozzle head water jets apply individual areas of the inner surfaces of the flue selectively over a longer period of time with water. This can lead to major damage to the relevant points of the flue gas train or the pipes laid therein, especially as a failure of the impeller or the transmission is not recognized during the cleaning process in the rule.
  • the Umlenkdüse Due to the rotationally symmetrical structure of the Umlenkdüse enters a jet of water from the nozzle head, which is equal to or equal to all sides.
  • a non-circular flue for example in a cuboid flue, the inner surfaces are cleaned with a rotationally symmetrical water jet so different degrees.
  • the distance between the nozzle head and surface to be cleaned varies depending on the structural design of the flue gas outlet.
  • narrow flue gas trains can the Distance between the nozzle head and the longitudinal side must be much smaller than the distance between the nozzle head and the narrow side.
  • the adjustment of a water pressure on the one hand ensures sufficient cleaning and on the other hand does not damage the flue, is not possible or very difficult.
  • the flue can have pipes, viewing windows and other fixtures that require special cleaning and for an all-round cleaning with rotationally symmetrical water outlet from the nozzle head is not suitable.
  • the invention is based on the object to provide a device for cleaning a flue, which works efficiently, largely excludes damage to the flue, requires a small footprint and can be easily used in existing incinerators with flues.
  • the object is achieved by providing a device having the features of claim 1.
  • the hose reel is mounted such that it can be rotated at least about a first axis corresponding to the drum axis and about a second axis.
  • the rotation about this second axis which is not parallel to the drum axis, causes the hose or the hose part, which is located in the flue during the cleaning process, to be rotated about its longitudinal axis.
  • the nozzle head is rotatably connected to the hose, so that by rotating the hose reel about the second axis of the nozzle head in the flue is also rotated.
  • the hose drum By rotating the hose drum about the first axis, that is to say about the drum axis, the hose is unwound or rolled up so that the position or position of the nozzle head in the flue can be varied simultaneously with the rotation of the nozzle head. If the hose is guided from above into the flue, the vertical height and the angle of rotation of the nozzle head in the flue can be adjusted.
  • the rotation of the nozzle head can be specified by rotation of the hose drum about the second axis exactly. This opens up the possibility of predetermining the direction of a cleaning jet emerging from the nozzle head by rotation of the hose drum.
  • a pinpoint cleaning of individual surface elements in the interior of the flue is possible.
  • the geometry of the flue, in particular the distance between the nozzle head and surface to be cleaned, located in the flue gas internals and possibly a different degree of contamination can be considered in the cleaning such that the time and / or frequency with which a cleaning jet to a certain Surface meets, is adjusted individually.
  • water is used as the cleaning medium.
  • the hose reel is held by a drum carrier.
  • the hose reel may rotate about the first axis.
  • the drum carrier in turn is rotatably mounted about the second axis. By rotation of the drum carrier thus attached to the hose nozzle head is rotated about the longitudinal axis of the hose.
  • the first axis and the second axis are perpendicular to each other.
  • the drum axis lies in the horizontal and the second axis in the vertical.
  • the hose in the flue gas through an opening with a substantially vertical axis can be introduced, which is coaxial with the second axis of the hose drum or to the axis of rotation of the drum carrier.
  • the preferably heat-resistant tube which is flexible in the longitudinal direction, but torsionally stiff, can thus be easily guided into the flue without this must be bent unnecessarily.
  • the rotation of the hose reel is controlled about the first and second axes. Due to the given geometric conditions (eg diameter of the hose drum, distance of the hose drum to the flue), the position (with vertical hose hanging hose) and the rotation angle position of the nozzle head can be controlled by controlling the rotations of the hose drum. With known geometry of the nozzle head (eg arrangement and direction of the nozzles), it can thus be determined how long and at what frequency certain areas inside the flue gas pass are cleaned. For example, particularly heavily contaminated areas can be subjected to a water jet longer and more frequently, while other areas can be left out completely if required.
  • known geometry of the nozzle head eg arrangement and direction of the nozzles
  • the pressure of the water (the cleaning medium) in the hose or in the nozzle head can be regulated.
  • the pressure can be reduced when a jet of water strikes a surface which lies in the vicinity of the nozzle head. If, however, a surface further removed from the nozzle head is to be cleaned, the setpoint for the pressure can be increased.
  • each surface element in the flue which can be achieved by a jet of water of the nozzle head, individually cleaned in terms of pressure, time and frequency.
  • a control unit of the cleaning device may comprise a memory which stores setpoint values for the rotational movements of the hose reel and also for the pressure value of the cleaning medium. By comparing these setpoints with actual values, which are detected for example by a water pressure measurement, a hose length measurement and a rotational angle measurement for the drum carrier, an automatic operation of the device according to the invention is possible.
  • a first servomotor may be provided.
  • a second servomotor can be used to rotate the hose reel about the second axis.
  • the two servomotors can be controlled by the control unit according to the setpoint specifications.
  • the nozzle head may have a plurality of nozzles.
  • the nozzles are arranged such that the reaction forces of the exiting through the nozzle cleaning medium in a horizontal plane compensate.
  • This can for example be achieved in that the nozzle head has a plurality of circumferentially equally spaced nozzles which are directed radially outward.
  • the axis of a nozzle can also have a vertical component in the operating position of the nozzle head.
  • the hose reel can be endlessly rotatable about the second axis, that is, the hose reel can rotate around the second axis as often as desired.
  • the hose reel may be rotatable about the second axis only in a certain angular range, for example in an angular range of 180 degrees.
  • a certain angular range for example in an angular range of 180 degrees.
  • at least two nozzles are provided, which are arranged diametrically in the nozzle head. If the hose reel is rotated back and forth in the specified angular range, the two nozzles together cover an angular range of 360 degrees, so that a flue is cleaned all round in a hanging hose in a horizontal plane can.
  • Another embodiment provides an angular range of 90 degrees with the nozzle head including at least four nozzles.
  • a device for guiding or holding the nozzle head may be provided on the nozzle head or on one end of the hose.
  • the nozzle head in this case has an eye, by means of which a rope or the like can be attached to the nozzle head.
  • the hose By means of the cable which pulls the nozzle head in a predetermined direction with a preferably adjustable force, the hose can be held in a desired position and, as far as the control of the hose reel permits, be guided on a desired path. It is thus possible, for example, to hold a hose, which is led horizontally into the flue gas duct through a lateral opening, by the tension of the cable in the horizontal plane.
  • the 1 shows a device 1 for cleaning a flue 2.
  • the flue 2 is here shown schematically only as a cuboid.
  • the device 1 is arranged with a hose drum 4, on which a hose 5 is partially rolled up.
  • the hose 5 is guided through an opening 6 of the flue 1.
  • the hose is made of heat-resistant material and can not be twisted in its longitudinal direction or only insignificantly.
  • a nozzle head 8 is rotatably attached at one end 7 of the tube 5, which is located in the flue 1.
  • the task of the nozzle head 8 is to conduct a cleaning medium, preferably water, which is passed through the tube 5 in the flue 1, on internal walls 9 of the flue 1 with a certain pressure.
  • Two water jets 10 emerge from the nozzle head 8 and strike the inner walls 9 of the flue 2.
  • the hose drum 4 is held by a drum carrier 12 in the horizontal.
  • a first axis 11 which corresponds to the drum axis, the tube 5 is unrolled or rolled up, so that the vertical height of the nozzle head 8 in the flue 2 changes.
  • the device 1 hangs on an I-beam 13 which extends into the plane of drawing of FIG.
  • the device 1 may be displaced along the I-beam 13 to be positioned over a flue (not shown) which may be located adjacent the flue 1.
  • the device 1 can be used by simply moving along the I-beam 13 for the cleaning of several flues of a combustion plant.
  • rotation of the drum support 12 about the second axis 15 of the hose 5 hanging on the nozzle head 8 is also rotated within the flue 1 to the vertical with the result that the water jets 10 are rotated in the flue 2.
  • a first servo motor 16 is provided for rotating the hose drum 4 about the first axis 11, while a second servo motor 17 rotates the drum carrier 12 about the second axis 15.
  • the two servomotors 16, 17 are controlled by a control unit, not shown.
  • the servo motors are controlled so that the inner surfaces 9 of the flue 1 are cleaned according to an individual cleaning pattern. Certain areas can be left out, while other areas can be cleaned longer and more frequently.
  • the water supply includes a pressure control so that the pressure with which the water comes out of the nozzle head 8 can be adjusted.
  • the pressure can be a function of the vertical height and the angle of rotation of the nozzle head 8 in the flue 1.
  • FIG. 2 shows the hose 5, which is connected to the nozzle head 8 in a rotationally fixed manner at the hose end 7.
  • the nozzle head 8 comprises two nozzles 19, which are directed radially outward and have a distance of 180 degrees to each other in the circumferential direction. In such a nozzle head, it suffices if the drum support 12 can be rotated in an angular range of 180 degrees to perform all-round cleaning in a horizontal plane.

Abstract

The invention relates to a device ( 1 ) for cleaning a flue of a combustion system. Said device ( 1 ) comprises a nozzle head ( 8 ) that is located in a flue ( 2 ) during the cleaning process and directs a cleaning medium onto interior walls ( 9 ) of the flue ( 2 ) and/or against pipes which are arranged therein, a hose ( 5 ) that conducts the cleaning medium, is connected to the nozzle head ( 8 ), and can be introduced into the flue ( 2 ) such that the position of the nozzle head ( 8 ) in the flue can be adjusted, and a hose drum ( 4 ) for winding up or unwinding the hose ( 5 ). The inventive device ( 1 ) is characterized in that the hose drum ( 5 ) is mounted so as to be rotatable about a first axis ( 11 ) and a second axis. The angle of rotation of the nozzle head ( 8 ) in the flue ( 2 ) is varied by rotating the hose drum ( 4 ) about said two axes, and so is the vertical height of the nozzle head ( 8 ) if the hose ( 4 ) is introduced into the flue ( 2 ) from above.

Description

Die Erfindung betrifft eine Vorrichtung zum Reinigen eines Rauchgaszugs einer Verbrennungsanlage.The invention relates to a device for cleaning a flue of a combustion system.

Aus der EP 1 291 598 A1 ist eine Vorrichtung zum Reinigen eines Rauchgaszugs bekannt, bei der ein Schlauch von oben in den Rauchgaszug geführt wird. Der Schlauch ist auf einer Schlauchtrommel aufgerollt. Um den Schlauch in vertikaler Richtung weiter in den Rauchgaszug zu führen, wird die Schlauchtrommel um ihre Achse gedreht, so dass der Schlauch von der Schlauchtrommel abrollt.From EP 1 291 598 A1 a device for cleaning a flue is known, in which a hose is guided from above into the flue. The hose is rolled up on a hose reel. In order to guide the hose further in the vertical direction into the flue, the hose reel is rotated about its axis so that the hose unrolls from the hose reel.

An dem in dem Rauchgaszug befindlichen Ende des Schlauchs ist ein Düsenkopf mit mehreren Düsen angebracht, die in verschiedene Richtungen zeigen. Die Düsen dienen dazu, Wasser, das durch den Schlauch zum Düsenkopf geführt wird, gegen Innenwände des Rauchgaszugs oder darin befindliche Rohre zu spritzen. Durch das Auftreffen der Wasserstrahlen sollen die betreffenden Flächen gereinigt werden.At the end of the hose in the flue, there is a nozzle head with several nozzles pointing in different directions. The nozzles serve to inject water, which is passed through the hose to the nozzle head, against inner walls of the flue gas duct or pipes located therein. The impingement of the water jets should clean the surfaces in question.

Damit die Innenflächen des Rauchgaszugs beziehungsweise die darin angeordneten Rohre oder Wärmetauscher möglichst in ihrer gesamten vertikalen Höhe gereinigt werden, wird beim Reinigungsvorgang die Höhe des Düsenkopfs im Rauchgaszug variiert. Darüber hinaus ist der Düsenkopf drehbar mit dem Schlauch verbunden. Ein durch die Strömung des Wassers angetriebenes Laufrad setzt den Düsenkopf mittels eines Getriebes in Rotation. Laufrad und Getriebe sind dabei im Düsenkopf angeordnet. Die Rotation des Düsenkopfs sorgt dafür, dass die Innenwände des Rauchgaszugs in einer horizontalen Ebene rundum gereinigt werden.So that the inner surfaces of the flue gas duct or the tubes or heat exchangers arranged therein are cleaned as far as possible in their entire vertical height, the height of the nozzle head in the flue gas duct is varied during the cleaning process. In addition, the nozzle head is rotatably connected to the hose. A driven by the flow of water impeller sets the nozzle head by means of a gear in rotation. Impeller and gearbox are arranged in the nozzle head. The rotation of the nozzle head ensures that the inner walls of the flue are completely cleaned in a horizontal plane.

Da Laufrad und Getriebe im Düsenkopf angeordnet sind, ist die Konstruktion des Düsenkopfs aufwendig und teuer. Zudem muss bei der Konstruktion berücksichtigt werden, dass der Düsenkopf im Rauchgaszug hohen Temperaturen ausgesetzt ist. Dies gilt insbesondere dann, wenn der Zufluss des den Düsenkopf kühlenden Wassers beim Reinigungsvorgang störungsbedingt unterbrochen wird.Since impeller and gear are arranged in the nozzle head, the construction of the nozzle head is complicated and expensive. In addition, the design must take into account that the nozzle head in the flue is exposed to high temperatures. This is especially true when the inflow of the nozzle head cooling water is interrupted during the cleaning process due to interference.

Ein Ausfall des Laufrads oder des Getriebes im Düsenkopf kann schwerwiegende Folgen haben. In diesem Fall kann sich der Düsenkopf nicht mehr drehen. Die in ihrer Richtung stillstehenden, aus dem Düsenkopf austretenden Wasserstrahlen beaufschlagen einzelne Bereiche der Innenflächen des Rauchgaszugs punktuell über eine längere Zeit mit Wasser. Dies kann zu größeren Beschädigungen der betreffenden Stellen des Rauchgaszugs beziehungsweise der darin verlegten Rohre führen, zumal ein Ausfall des Laufrads oder des Getriebes beim Reinigungsvorgang in der Regel nicht erkannt wird.A failure of the impeller or the gear in the nozzle head can have serious consequences. In this case, the nozzle head can not turn anymore. The stationary in their direction, exiting from the nozzle head water jets apply individual areas of the inner surfaces of the flue selectively over a longer period of time with water. This can lead to major damage to the relevant points of the flue gas train or the pipes laid therein, especially as a failure of the impeller or the transmission is not recognized during the cleaning process in the rule.

Aus der EP 1 256 761 A2 ist eine ähnliche Reinigungsvorrichtung bekannt. Als Düsenkopf ist eine sogenannte Umlenkrunddüse vorgesehen, die einen rotationssymmetrischen Wasseraustritt garantieren soll, so dass in einer horizontalen Ebene auch ohne Drehung des Düsenkopfs alle Bereiche der Innenflächen des Rauchgaszugs mit Wasser bespritzt werden sollen.From EP 1 256 761 A2 a similar cleaning device is known. As a nozzle head, a so-called Umlenkrunddüse is provided which is to guarantee a rotationally symmetrical water outlet, so that in a horizontal plane without rotation of the nozzle head all areas of the inner surfaces of the flue should be sprayed with water.

Aufgrund des rotationssymmetrischen Aufbaus der Umlenkdüse tritt ein Wasserstrahl aus dem Düsenkopf, der zu allen Seiten gleich groß beziehungsweise gleich stark ist. Bei einem nicht kreisrunden Rauchgaszug, beispielsweise bei einem quaderförmigen Rauchgaszug, werden die Innenflächen bei einem rotationssymmetrischen Wasserstrahl damit unterschiedlich stark gereinigt. So variiert der Abstand zwischen Düsenkopf und zu reinigender Fläche in Abhängigkeit der baulichen Ausgestaltung des Rauchgasabzugs. Bei schmal ausgeführten Rauchgaszügen kann der Abstand zwischen Düsenkopf und Längsseite wesentlich kleiner sein als der Abstand zwischen Düsenkopf und Schmalseite. Die Einstellung eines Wasserdrucks, der einerseits für eine ausreichende Reinigung sorgt und andererseits den Rauchgaszug nicht beschädigt, ist nicht möglich beziehungsweise sehr schwierig. Zudem kann der Rauchgaszug Rohre, Sichtfenster und andere Einbauten aufweisen, die einer besonderen Reinigung bedürfen und für die eine Rundum-Reinigung mit rotationssymmetrischem Wasseraustritt aus dem Düsenkopf nicht geeignet ist.Due to the rotationally symmetrical structure of the Umlenkdüse enters a jet of water from the nozzle head, which is equal to or equal to all sides. In a non-circular flue, for example in a cuboid flue, the inner surfaces are cleaned with a rotationally symmetrical water jet so different degrees. Thus, the distance between the nozzle head and surface to be cleaned varies depending on the structural design of the flue gas outlet. In narrow flue gas trains can the Distance between the nozzle head and the longitudinal side must be much smaller than the distance between the nozzle head and the narrow side. The adjustment of a water pressure, on the one hand ensures sufficient cleaning and on the other hand does not damage the flue, is not possible or very difficult. In addition, the flue can have pipes, viewing windows and other fixtures that require special cleaning and for an all-round cleaning with rotationally symmetrical water outlet from the nozzle head is not suitable.

Der Erfindung liegt die Aufgabe zu Grunde, eine Vorrichtung zum Reinigen eines Rauchgaszugs bereitzustellen, die effizient arbeitet, eine Beschädigung des Rauchgaszugs weitestgehend ausschließt, einen geringen Platzbedarf erfordert und einfach bei bestehenden Verbrennungsanlagen mit Rauchgaszügen eingesetzt werden kann.The invention is based on the object to provide a device for cleaning a flue, which works efficiently, largely excludes damage to the flue, requires a small footprint and can be easily used in existing incinerators with flues.

Die Aufgabe wird durch Bereitstellung einer Vorrichtung mit den Merkmalen des Anspruchs 1 gelöst. Die Schlauchtrommel ist dabei derart gelagert, dass sie wenigstens um eine erste Achse, die der Trommelachse entspricht, und um eine zweite Achse gedreht werden kann. Die Drehung um diese zweite, zur Trommelachse nicht parallelen Achse bewirkt, dass der Schlauch beziehungsweise der Schlauchteil, der sich beim Reinigungsvorgang im Rauchgaszug befindet, um seine Längsachse gedreht wird. Der Düsenkopf ist drehfest mit dem Schlauch verbunden, sodass durch Drehung der Schlauchtrommel um die zweite Achse der Düsenkopf im Rauchgaszug ebenfalls gedreht wird.The object is achieved by providing a device having the features of claim 1. The hose reel is mounted such that it can be rotated at least about a first axis corresponding to the drum axis and about a second axis. The rotation about this second axis, which is not parallel to the drum axis, causes the hose or the hose part, which is located in the flue during the cleaning process, to be rotated about its longitudinal axis. The nozzle head is rotatably connected to the hose, so that by rotating the hose reel about the second axis of the nozzle head in the flue is also rotated.

Durch Drehen der Schlauchtrommel um die erste Achse, das heißt um die Trommelachse, wird der Schlauch abgerollt beziehungsweise aufgerollt, sodass die Lage oder Position des Düsenkopfs im Rauchgaszug gleichzeitig mit der Drehung des Düsenkopfs variiert werden kann. Wird der Schlauch von oben in den Rauchgaszug geführt, kann somit die vertikale Höhe und der Drehwinkel des Düsenkopfs im Rauchgaszug eingestellt werden.By rotating the hose drum about the first axis, that is to say about the drum axis, the hose is unwound or rolled up so that the position or position of the nozzle head in the flue can be varied simultaneously with the rotation of the nozzle head. If the hose is guided from above into the flue, the vertical height and the angle of rotation of the nozzle head in the flue can be adjusted.

Bei einem im Wesentlichen torsionssteifen Schlauch kann durch Drehung der Schlauchtrommel um die zweite Achse die Drehung des Düsenkopfs genau vorgegeben werden. Dies eröffnet die Möglichkeit, die Richtung eines aus dem Düsenkopf tretenden Reinigungsstrahls durch Drehung der Schlauchtrommel gezielt vorzugeben. In Zusammenspiel mit einem Drehen der Schlauchtrommel um die erste Achse ist somit eine punktgenaue Reinigung einzelner Flächenelemente im Inneren des Rauchgaszugs möglich. Die Geometrie des Rauchgaszugs, insbesondere der Abstand zwischen Düsenkopf und zu reinigender Fläche, die im Rauchgaszug befindlichen Einbauten sowie ein möglicherweise unterschiedlich starker Verschmutzungsgrad können bei der Reinigung dergestalt berücksichtigt werden, dass die Zeitdauer und/oder die Häufigkeit, mit der ein Reinigungsstrahl auf eine bestimmte Fläche trifft, individuell eingestellt wird. Vorzugsweise wird als Reinigungsmedium Wasser verwendet.In a substantially torsionally rigid tube, the rotation of the nozzle head can be specified by rotation of the hose drum about the second axis exactly. This opens up the possibility of predetermining the direction of a cleaning jet emerging from the nozzle head by rotation of the hose drum. In conjunction with a rotation of the hose drum about the first axis thus a pinpoint cleaning of individual surface elements in the interior of the flue is possible. The geometry of the flue, in particular the distance between the nozzle head and surface to be cleaned, located in the flue gas internals and possibly a different degree of contamination can be considered in the cleaning such that the time and / or frequency with which a cleaning jet to a certain Surface meets, is adjusted individually. Preferably, water is used as the cleaning medium.

Vorzugsweise wird die Schlauchtrommel von einem Trommelträger gehalten. Im Bezug auf den Trommelträger kann sich die Schlauchtrommel um die erste Achse drehen. Der Trommelträger wiederum ist um die zweite Achse drehbar gelagert. Durch Drehung des Trommelträgers wird somit der an dem Schlauch befestigte Düsenkopf um die Längsachse des Schlauchs gedreht.Preferably, the hose reel is held by a drum carrier. With respect to the drum support, the hose reel may rotate about the first axis. The drum carrier in turn is rotatably mounted about the second axis. By rotation of the drum carrier thus attached to the hose nozzle head is rotated about the longitudinal axis of the hose.

In einem bevorzugten Ausführungsbeispiel verlaufen die erste Achse und die zweite Achse senkrecht zueinander. Vorzugsweise liegt die Trommelachse in der Horizontalen und die zweite Achse in der Vertikalen. Durch eine derartige Anordnung der zwei Achsen kann ein Einfluss der Drehung der Schlauchtrommel um die zweite Achse auf die vertikale Höhe des an dem Schlauch hängenden Düsenkopfs im Rauchgaszug ausgeschlossen werden, wenn der Schlauch von oben hängend im Rauchgaszug angeordnet ist.In a preferred embodiment, the first axis and the second axis are perpendicular to each other. Preferably, the drum axis lies in the horizontal and the second axis in the vertical. By such an arrangement of the two axes, an influence of the rotation of the hose drum about the second axis can be excluded on the vertical height of the hanging on the hose nozzle head in the flue, when the hose is arranged from above hanging in the flue.

Zweckmäßig ist es, wenn der Schlauch in den Rauchgaszug durch eine Öffnung mit einer im wesentlich vertikal verlaufender Achse eingeführt werden kann, die koaxial zur zweiten Achse der Schlauchtrommel beziehungsweise zur Drehachse des Trommelträgers ist. Der vorzugsweise hitzbeständige Schlauch, der in Längsrichtung flexibel, aber torsionssteif ist, kann somit leicht in den Rauchgaszug geführt werden, ohne dass dieser unnötig gebogen werden muss.It is expedient if the hose in the flue gas through an opening with a substantially vertical axis can be introduced, which is coaxial with the second axis of the hose drum or to the axis of rotation of the drum carrier. The preferably heat-resistant tube, which is flexible in the longitudinal direction, but torsionally stiff, can thus be easily guided into the flue without this must be bent unnecessarily.

In einem bevorzugten Ausführungsbeispiel wird das Drehen der Schlauchtrommel um die erste und die zweite Achse geregelt. Aufgrund der gegebenen geometrischen Verhältnisse (z. B. Durchmesser der Schlauchtrommel, Abstand der Schlauchtrommel zum Rauchgaszug) kann durch die Regelung der Drehungen der Schlauchtrommel die Lage (bei hängendem Schlauch die vertikale Höhe) und die Drehwinkelstellung des Düsenkopfs gesteuert werden. Bei bekannter Geometrie des Düsenkopfs (z. B. Anordnung und Richtung der Düsen) kann damit folglich bestimmt werden, wie lange und mit welcher Häufigkeit bestimmte Bereiche im Inneren des Rauchgaszugs gereinigt werden. Beispielsweise können besonders stark verschmutzte Bereiche länger und häufiger mit einem Wasserstrahl beaufschlagt werden, während andere Bereiche bei Bedarf ganz ausgespart werden können.In a preferred embodiment, the rotation of the hose reel is controlled about the first and second axes. Due to the given geometric conditions (eg diameter of the hose drum, distance of the hose drum to the flue), the position (with vertical hose hanging hose) and the rotation angle position of the nozzle head can be controlled by controlling the rotations of the hose drum. With known geometry of the nozzle head (eg arrangement and direction of the nozzles), it can thus be determined how long and at what frequency certain areas inside the flue gas pass are cleaned. For example, particularly heavily contaminated areas can be subjected to a water jet longer and more frequently, while other areas can be left out completely if required.

Vorzugsweise kann auch der Druck des Wassers (des Reinigungsmediums) im Schlauch oder im Düsenkopf geregelt sein. Durch Vorgabe entsprechender Sollwerte kann in Abhängigkeit der vertikalen Position und des Drehwinkels des Düsenkopfs beispielsweise der Druck reduziert werden, wenn ein Wasserstrahl auf eine Fläche trifft, die in der Nähe des Düsenkopfs liegt. Soll jedoch eine vom Düsenkopf weiter entfernte Fläche gereinigt werden, kann der Sollwert für den Druck erhöht werden. Somit kann jedes Flächenelement im Rauchgaszug, das von einem Wasserstrahl des Düsenkopfs erreicht werden kann, individuell hinsichtlich Druck, Zeitdauer und Häufigkeit gereinigt werden.Preferably, the pressure of the water (the cleaning medium) in the hose or in the nozzle head can be regulated. By presetting corresponding set values, for example, depending on the vertical position and the angle of rotation of the nozzle head, the pressure can be reduced when a jet of water strikes a surface which lies in the vicinity of the nozzle head. If, however, a surface further removed from the nozzle head is to be cleaned, the setpoint for the pressure can be increased. Thus, each surface element in the flue, which can be achieved by a jet of water of the nozzle head, individually cleaned in terms of pressure, time and frequency.

Die Drehbewegungen der Schlauchtrommel und damit die räumliche Lage und die Drehwinkelposition des Düsenkopfs im Rauchgaszug ist vorzugsweise vorprogrammiert. Eine Steuereinheit der Reinigungsvorrichtung kann dabei einen Speicher umfassen, der Sollwerte für die Drehbewegungen der Schlauchtrommel und auch für den Druckwert des Reinigungsmediums speichert. Durch einen Vergleich dieser Sollwerte mit Istwerten, die beispielsweise durch eine Wasserdruckmessung, eine Schlauchlängenmessung und eine Drehwinkelmessung für den Trommelträger erfasst werden, ist ein automatischer Betrieb der erfindungsgemäßen Vorrichtung möglich.The rotational movements of the hose drum and thus the spatial position and the rotational angular position of the nozzle head in the flue is preferably preprogrammed. A control unit of the cleaning device may comprise a memory which stores setpoint values for the rotational movements of the hose reel and also for the pressure value of the cleaning medium. By comparing these setpoints with actual values, which are detected for example by a water pressure measurement, a hose length measurement and a rotational angle measurement for the drum carrier, an automatic operation of the device according to the invention is possible.

Zum Drehen der Schlauchtrommel um die erste Achse kann ein erster Stellmotor vorgesehen sein. Ein zweiter Stellmotor kann zur Drehung der Schlauchtrommel um die zweite Achse verwendet werden. Die beiden Stellmotoren können entsprechend der Sollwertvorgaben von der Steuereinheit angesteuert werden.To rotate the hose drum about the first axis, a first servomotor may be provided. A second servomotor can be used to rotate the hose reel about the second axis. The two servomotors can be controlled by the control unit according to the setpoint specifications.

Der Düsenkopf kann mehrere Düsen aufweisen. Vorzugsweise sind die Düsen derart angeordnet, dass sich die Reaktionskräfte des durch die Düsen austretenden Reinigungsmediums in einer horizontalen Ebene ausgleichen. Dies kann beispielsweise dadurch erreicht werden, dass der Düsenkopf mehrere, in Umfangsrichtung gleichmäßig beabstandete Düsen aufweist, die radial nach außen gerichtet sind. Die Achse einer Düse kann dabei in Einsatzlage des Düsenkopfs auch eine vertikale Komponente haben.The nozzle head may have a plurality of nozzles. Preferably, the nozzles are arranged such that the reaction forces of the exiting through the nozzle cleaning medium in a horizontal plane compensate. This can for example be achieved in that the nozzle head has a plurality of circumferentially equally spaced nozzles which are directed radially outward. The axis of a nozzle can also have a vertical component in the operating position of the nozzle head.

Die Schlauchtrommel kann um die zweite Achse endlos drehbar sein, das heißt, die Schlauchtrommel kann sich beliebig oft um die zweite Achse drehen. Alternativ kann die Schlauchtrommel um die zweite Achse nur in einem bestimmten Winkelbereich drehbar sein, beispielsweise in einem Winkelbereich von 180 Grad. Bei diesem Winkelbereich sind vorzugsweise mindestens zwei Düsen vorzusehen, die diametral im Düsenkopf angeordnet sind. Wird die Schlauchtrommel im vorgegebenen Winkelbereich hin- und hergedreht, decken die zwei Düsen zusammen einen Winkelbereich von 360 Grad ab, so dass ein Rauchgaszug bei einem hängenden Schlauch in einer horizontalen Ebene rundum gereinigt werden kann. Ein weiteres Ausführungsbeispiel sieht einen Winkelbereich von 90 Grad vor, wobei der Düsenkopf mindestens vier Düsen umfasst.The hose reel can be endlessly rotatable about the second axis, that is, the hose reel can rotate around the second axis as often as desired. Alternatively, the hose reel may be rotatable about the second axis only in a certain angular range, for example in an angular range of 180 degrees. In this angular range, preferably at least two nozzles are provided, which are arranged diametrically in the nozzle head. If the hose reel is rotated back and forth in the specified angular range, the two nozzles together cover an angular range of 360 degrees, so that a flue is cleaned all round in a hanging hose in a horizontal plane can. Another embodiment provides an angular range of 90 degrees with the nozzle head including at least four nozzles.

In einem Ausführungsbeispiel kann an dem Düsenkopf oder an einem Ende des Schlauchs eine Vorrichtung zum Führen oder Halten des Düsenkopfs vorgesehen sein. Vorzugsweise weist der Düsenkopf dabei eine Öse auf, mittels derer ein Seil oder dergleichen am Düsenkopf befestigt werden kann.In one embodiment, a device for guiding or holding the nozzle head may be provided on the nozzle head or on one end of the hose. Preferably, the nozzle head in this case has an eye, by means of which a rope or the like can be attached to the nozzle head.

Mit Hilfe des Seils, das den Düsenkopf mit einer vorzugsweise einstellbaren Kraft in eine vorbestimmte Richtung zieht, kann der Schlauch in einer gewünschten Position gehalten werden und, soweit dies die Steuerung der Schlauchtrommel zulässt, auf einer gewünschten Bahn geführt werden. So ist es beispielsweise möglich, einen Schlauch, der durch eine seitliche Öffnung horizontal in den Rauchgaszug geführt wird, durch die Spannkraft des Seils in der horizontalen Ebene zu halten.By means of the cable which pulls the nozzle head in a predetermined direction with a preferably adjustable force, the hose can be held in a desired position and, as far as the control of the hose reel permits, be guided on a desired path. It is thus possible, for example, to hold a hose, which is led horizontally into the flue gas duct through a lateral opening, by the tension of the cable in the horizontal plane.

Anhand eines in den Figuren dargestellten Ausführungsbeispiels wird die Erfindung näher beschrieben. Es zeigen:

Figur 1
ein Ausführungsbeispiel der erfindungsgemäßen Vorrichtung mit einem schematisch dargestellten Rauchgaszug; und
Figur 2
einen Schlauch mit einem Düsenkopf.
Reference to an embodiment shown in the figures, the invention is described in detail. Show it:
FIG. 1
an embodiment of the device according to the invention with a schematically illustrated flue; and
FIG. 2
a hose with a nozzle head.

Figur 1 zeigt eine Vorrichtung 1 zum Reinigen eines Rauchgaszugs 2. Der Rauchgaszug 2 ist hier schematisch lediglich als Quader dargestellt. An einem oberen Ende 3 des Rauchgaszugs 2 ist die Vorrichtung 1 mit einer Schlauchtrommel 4 angeordnet, auf der ein Schlauch 5 zum Teil aufgerollt ist. Der Schlauch 5 ist durch eine Öffnung 6 des Rauchgaszugs 1 geführt. Der Schlauch ist aus hitzebeständigen Material und lässt sich in seiner Längsrichtung nicht oder nur unwesentlich verdrehen.1 shows a device 1 for cleaning a flue 2. The flue 2 is here shown schematically only as a cuboid. At an upper end 3 of the flue 2, the device 1 is arranged with a hose drum 4, on which a hose 5 is partially rolled up. The hose 5 is guided through an opening 6 of the flue 1. The hose is made of heat-resistant material and can not be twisted in its longitudinal direction or only insignificantly.

An einem Ende 7 des Schlauchs 5, das sich in dem Rauchgaszug 1 befindet, ist drehfest ein Düsenkopf 8 befestigt. Aufgabe des Düsenkopfes 8 ist es, ein Reinigungsmedium, vorzugsweise Wasser, das durch den Schlauch 5 in den Rauchgaszug 1 geführt wird, auf Innenwände 9 des Rauchgaszugs 1 mit einem bestimmten Druck zu leiten. Zwei Wasserstrahlen 10 treten aus dem Düsenkopf 8 aus und treffen auf die Innenwände 9 des Rauchgaszugs 2.At one end 7 of the tube 5, which is located in the flue 1, a nozzle head 8 is rotatably attached. The task of the nozzle head 8 is to conduct a cleaning medium, preferably water, which is passed through the tube 5 in the flue 1, on internal walls 9 of the flue 1 with a certain pressure. Two water jets 10 emerge from the nozzle head 8 and strike the inner walls 9 of the flue 2.

Die Schlauchtrommel 4 wird von einem Trommelträger 12 in der Horizontalen gehalten. Durch Drehen der Schlauchtrommel 4 um eine erste Achse 11, die der Trommelachse entspricht, wird der Schlauch 5 abgerollt beziehungsweise aufgerollt, sodass sich die vertikale Höhe des Düsenkopfs 8 im Rauchgaszug 2 ändert.The hose drum 4 is held by a drum carrier 12 in the horizontal. By rotating the hose drum 4 about a first axis 11, which corresponds to the drum axis, the tube 5 is unrolled or rolled up, so that the vertical height of the nozzle head 8 in the flue 2 changes.

Die Vorrichtung 1 hängt an einem I-Träger 13, der sich in die Zeichenebene der Figur 1 erstreckt. Die Vorrichtung 1 kann entlang des I-Trägers 13 verschoben werden, um über einen Rauchgaszug (nicht dargestellt) positioniert zu werden, der neben dem Rauchgaszug 1 angeordnet sein kann. Somit kann die Vorrichtung 1 durch einfaches Verschieben entlang des I-Trägers 13 für die Reinigung mehrerer Rauchgaszüge einer Verbrennungsanlage eingesetzt werden.The device 1 hangs on an I-beam 13 which extends into the plane of drawing of FIG. The device 1 may be displaced along the I-beam 13 to be positioned over a flue (not shown) which may be located adjacent the flue 1. Thus, the device 1 can be used by simply moving along the I-beam 13 for the cleaning of several flues of a combustion plant.

Eine Aufhängung 14, die die Vorrichtung 1 mit dem I-Träger 13 verbindet, erlaubt eine Drehung des Trommelträgers 12 um eine zweite Achse 15, die vertikal und senkrecht zur ersten Achse 11 verläuft. Durch Drehung des Trommelträgers 12 um die zweite Achse 15 wird der an dem Schlauch 5 hängende Düsenkopf 8 innerhalb des Rauchgaszugs 1 ebenfalls um die Vertikale gedreht mit der Folge, dass auch die Wasserstrahlen 10 im Rauchgaszug 2 gedreht werden.A suspension 14, which connects the device 1 to the I-beam 13, allows rotation of the drum support 12 about a second axis 15 which is vertical and perpendicular to the first axis 11. By rotation of the drum support 12 about the second axis 15 of the hose 5 hanging on the nozzle head 8 is also rotated within the flue 1 to the vertical with the result that the water jets 10 are rotated in the flue 2.

Ein erster Stellmotor 16 ist zum Drehen der Schlauchtrommel 4 um die erste Achse 11 vorgesehen, während ein zweiter Stellmotor 17 den Trommelträger 12 um die zweite Achse 15 dreht. Die beiden Stellmotoren 16, 17 werden über eine nicht dargestellte Steuereinheit angesteuert. So werden die Stellmotoren derart geregelt, dass die Innenflächen 9 des Rauchgaszugs 1 nach einem individuellen Reinigungsmuster gereinigt werden. Bestimmte Bereiche können dabei ausgespart werden, während andere Bereich länger und häufiger gereinigt werden können.A first servo motor 16 is provided for rotating the hose drum 4 about the first axis 11, while a second servo motor 17 rotates the drum carrier 12 about the second axis 15. The two servomotors 16, 17 are controlled by a control unit, not shown. Thus, the servo motors are controlled so that the inner surfaces 9 of the flue 1 are cleaned according to an individual cleaning pattern. Certain areas can be left out, while other areas can be cleaned longer and more frequently.

In der Figur 1 nicht dargestellt in eine Wasserzuführung, die mit der Schlauchtrommel 4 verbunden ist. Die Wasserzuführung umfasst eine Drucksteuerung, sodass der Druck, mit dem das Wasser aus dem Düsenkopf 8 tritt, eingestellt werden kann. Der Druck kann dabei eine Funktion der vertikalen Höhe und des Drehwinkels des Düsenkopfs 8 im Rauchgaszug 1 sein.Not shown in the figure 1 in a water supply, which is connected to the hose drum 4. The water supply includes a pressure control so that the pressure with which the water comes out of the nozzle head 8 can be adjusted. The pressure can be a function of the vertical height and the angle of rotation of the nozzle head 8 in the flue 1.

Figur 2 zeigt den Schlauch 5, der an dem Schlauchende 7 drehfest mit dem Düsenkopf 8 verbunden ist. Der Düsenkopf 8 umfasst zwei Düsen 19, die radial nach außen gerichtet sind und in Umfangsrichtung zueinander einen Abstand von 180 Grad aufweisen. Bei einem derartigen Düsenkopf reicht es aus, wenn der Trommelträger 12 in einem Winkelbereich von 180 Grad gedreht werden kann, um eine Rundum-Reinigung in einer horizontalen Ebene durchzuführen.FIG. 2 shows the hose 5, which is connected to the nozzle head 8 in a rotationally fixed manner at the hose end 7. The nozzle head 8 comprises two nozzles 19, which are directed radially outward and have a distance of 180 degrees to each other in the circumferential direction. In such a nozzle head, it suffices if the drum support 12 can be rotated in an angular range of 180 degrees to perform all-round cleaning in a horizontal plane.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Vorrichtungcontraption
22
Rauchgaszugflue
33
oberes Endetop end
44
Schlauchtrommelhose reel
55
Schlauchtube
66
Öffnungopening
77
EndeThe End
88th
Düsenkopfnozzle head
99
Innenwandinner wall
1010
Wasserstrahlwaterjet
1111
erste Achsefirst axis
1212
Trommelträgerdrum support
1313
I-TrägerI-beams
1414
Aufhängungsuspension
1515
zweite Achsesecond axis
1616
erster Stellmotorfirst servomotor
1717
zweiter Stellmotorsecond servomotor
1818
Schlauchführunghose guide
1919
Düsejet

Claims (14)

  1. Device (1) for cleaning a flue (2) or the like of a combustion system, comprising:
    a nozzle head (8), which is located in the flue (2) during the cleaning process and directs a cleaning medium onto the interior walls (9) of the flue (2) and/or onto pipes located therein,
    a hose (5) carrying the cleaning medium, which is connected to the nozzle head (8) and can be inserted into the flue (2) such that the position of the nozzle head (8) in the flue can be adjusted,
    a hose drum (4), for winding up and unwinding the hose (5),
    characterised in that the hose drum (4) is mounted so as to be rotatable at least about a first axis (11) and a second axis (15).
  2. Device (1) according to Claim 1, characterised in that the hose drum (4) is held so as to be rotatable about the first axis (11) by a drum carrier (12), which is mounted so as to be rotatable about the second axis (15).
  3. Device (1) according to Claim 1 or 2, characterised in that the two axes (11, 15) are perpendicular to each other.
  4. Device (1) according to one of Claims 1 to 3, characterised in that the second axis (15) is essentially vertical.
  5. Device (1) according to one of Claims 1 to 4, characterised in that the hose (5) can be inserted into the flue (2) through an opening (6) having an essentially vertical axis that is coaxial to the second axis (15).
  6. Device (1) according to one of Claims 1 to 5, characterised in that the rotation of the hose drum (4) about the first axis (11) and second axis (15) is controllable.
  7. Device (1) according to one of Claims 1 to 6, characterised in that the pressure of the cleaning medium can be adjusted in the hose (5) or in the nozzle head (8).
  8. Device (1) according to Claim 7, characterised in that the pressure is adjustable as a function of the rotational angle of the hose drum (4) about the two axes (11, 15).
  9. Device (1) according to one of Claims 1 to 8, characterised in that the rotational movements about the first axis (11) and about the second axis (15) can be preprogrammed.
  10. Device (1) according to one of Claims 2 to 9, characterised in that a first servomotor (16) is provided for rotating the hose drum (4) about the first axis (11), and a second servomotor (17) for rotating the drum carrier (12) about the second axis (15).
  11. Device (1) according to one of Claims 1 to 10, characterised in that the nozzle head (8) displays several nozzles (19) that are spaced apart at equal distances in the circumferential direction and directed radially outwards.
  12. Device (1) according to Claim 11, characterised in that the hose drum (4) can be rotated back and forth about the second axis (15) over an angular range, where the angular range is no smaller than the angular distance between the nozzles (19) in the circumferential direction.
  13. Device (1) according to one of Claims 1 to 12, characterised in that a device for guiding or retaining the nozzle head (8) is provided on the nozzle head (8) or on one end (7) of the hose (5).
  14. Device according to Claim 13, characterised in that the nozzle head (8) displays an eye or the like for fastening a tensioning rope.
EP04786698A 2003-09-02 2004-09-01 Cleaning of a furnace Active EP1660835B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04786698T PL1660835T3 (en) 2003-09-02 2004-09-01 Cleaning of a furnace

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10340790A DE10340790B3 (en) 2003-09-02 2003-09-02 boiler cleaning
PCT/DE2004/001931 WO2005024333A1 (en) 2003-09-02 2004-09-01 Cleaning of a furnace

Publications (2)

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EP1660835A1 EP1660835A1 (en) 2006-05-31
EP1660835B1 true EP1660835B1 (en) 2007-01-24

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US (1) US20070163629A1 (en)
EP (1) EP1660835B1 (en)
CN (1) CN1846112B (en)
AT (1) ATE352765T1 (en)
DE (2) DE10340790B3 (en)
ES (1) ES2281017T3 (en)
PL (1) PL1660835T3 (en)
WO (1) WO2005024333A1 (en)

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DE102017110827A1 (en) 2017-05-18 2018-11-22 Rosink-Werkstätten GmbH Apparatus and method for the online cleaning of a flue of an incinerator
DE102021132051A1 (en) 2021-12-06 2023-06-07 Rosink-Werkstätten GmbH Cleaning device for an incinerator and information adapter for such a cleaning device
EP4191190A1 (en) 2021-12-06 2023-06-07 Rosink-Werkstätten GmbH Cleaning device for a combustion system and information adapter for such a cleaning device

Also Published As

Publication number Publication date
DE10340790B3 (en) 2005-04-28
EP1660835A1 (en) 2006-05-31
DE502004002803D1 (en) 2007-03-15
ATE352765T1 (en) 2007-02-15
ES2281017T3 (en) 2007-09-16
WO2005024333A1 (en) 2005-03-17
PL1660835T3 (en) 2007-06-29
CN1846112B (en) 2010-05-26
CN1846112A (en) 2006-10-11
US20070163629A1 (en) 2007-07-19

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