EP0616680B1 - Water lance blower for cleaning heat exchangers - Google Patents
Water lance blower for cleaning heat exchangers Download PDFInfo
- Publication number
- EP0616680B1 EP0616680B1 EP92924572A EP92924572A EP0616680B1 EP 0616680 B1 EP0616680 B1 EP 0616680B1 EP 92924572 A EP92924572 A EP 92924572A EP 92924572 A EP92924572 A EP 92924572A EP 0616680 B1 EP0616680 B1 EP 0616680B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spindle
- vertical spindle
- water lance
- guide
- combustion chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- 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
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/16—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris
- F28G1/166—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris from external surfaces of heat exchange conduits
Definitions
- the invention relates to a water lance blower for cleaning heat exchangers, in particular a combustion chamber wall in steam boilers, the mouth of which is pivotally mounted in the combustion chamber wall of the steam boiler and is pivotally suspended at its rear part.
- the cleaning of the fireboxes of high-performance steam boilers during operation is also carried out, among other things, with the help of water lance blowers, which emit a bundled water jet through the firebox on the opposite wall.
- the blow pipe which has a blow nozzle in the center, is connected in an articulated manner via a roller guide to a drive which performs superimposed movements.
- the water lance blower is moved up to an open hatch or the blow pipe is inserted into the combustion chamber through a piece of pipe stored in the hatch.
- the water lance blower is swung out after the cyclical cleaning process or retracted linearly backwards. This requires complex mechanics that are prone to failure, which also makes automation of the cleaning process very difficult. In addition, these solutions require multiple redirections of the water supply system, which are associated with high pressure losses. In order to avoid the entry of false air into the steam boiler and contamination from the steam boiler, the pipe leadthrough the combustion chamber wall must be as tight as possible.
- a water lance blower is also already known in which the blow pipe no longer has to be moved axially, the diameter of the pipe leadthrough through the hatch is reduced and a self-cleaning effect is achieved between the sliding parts of the pipe leadthrough (DD 235 102).
- this is achieved in that a blow-through cylinder is rigidly flanged to the blow nozzle at the front and the mouth of the blow nozzle is inserted into the blow-by cylinder, the blow-through cylinder is rigidly fixed in the ball joint formed from a ball segment and is slotted in its free part or provided with bores.
- a disadvantage of this water lance blower is that the effect of the ball joint with regard to self-cleaning has not occurred sufficiently.
- the invention has for its object to form a water lance blower, which is pivotally mounted with its mouth in the combustion chamber wall of the steam boiler and pivotally suspended at its rear end, so that there is movement in the plane on all sides without contamination and the occurring Beam on the opposite wall of the boiler describes a precisely defined path.
- a flange is provided on the mouth of the blowpipe in the combustion chamber wall, which flange is fastened in the combustion chamber wall by means of a gimbal, the rear part of the blowpipe is arranged in a guide which is vertically displaceable on a vertical spindle, the vertical spindle being horizontally displaceable at the top and bottom of a horizontal spindle and the guide being formed from a housing which is not rotatably seated on the vertical spindle and carries a fork-shaped receptacle on the side, in the transverse axis of which a cage is rotatably arranged, which receives in its inner part a sleeve rotatably arranged in the longitudinal axis of the fork-shaped receptacle, in which the blowpipe is mounted so as to be axially displaceable.
- the vertical spindle is surrounded by a fixed protective tube with a longitudinal groove, a threaded nut with a feather key is arranged on the vertical spindle, the feather key being guided in the longitudinal groove and projecting from this a socket on which the housing sits.
- the vertical spindle is driven by a gear motor.
- the housing and the receptacle are advantageously formed from one part and the feather key is T-shaped, attached with its flange to the outside of the housing and guided with the shaft through the housing into the threaded nut.
- the vertical and horizontal spindles are surrounded by a bellows or a spiral protection spring. Both horizontal spindles are supported at their ends in a front and rear box, the upper spindle is driven by a gear motor and the lower spindle is connected to the upper spindle by a chain in the rear box.
- the water lance blower consists essentially of a blow pipe 1, a gimbal 3, a guide 5, a vertical spindle 6 and two horizontal spindles 7; 8.
- the blow pipe 1 sits flush with its mouth in a flange which is fastened via a gimbal 3 in a manner known per se via several bolts in a hatch of the combustion chamber wall 4. There are two bolts in two different axes, so that the parts of the gimbal 3 can move in the two desired planes.
- the rear part of the blow pipe 1 is seated in the guide 5, which is arranged on the vertical spindle 6 so as to be vertically displaceable.
- the vertical spindle 6 is mounted on top of the horizontal spindle 7 and below on the horizontal spindle 8 and can be displaced horizontally thereon.
- the vertical spindle 6 is driven by a geared motor 20.
- the guide 5 consists of a housing 9 which is not rotatably seated on the vertical spindle 6 and on the side carries a fork-shaped receptacle 10 in which a gimbal-shaped cage 11 is arranged.
- the cage 11 is formed in its inner part as a sleeve 12 and receives the blow tube 1 axially displaceably therein.
- 12 bushings 21 are provided at both ends of the sleeve.
- the vertical spindle 6 is surrounded by a fixed protective tube 22 which is provided with a longitudinal groove.
- a threaded nut 23 with a feather key 2 is arranged on the spindle 6.
- the feather key 2 is guided in the longitudinal groove, protrudes out of this and receives a socket 13 on which the housing 9 sits.
- the vertical spindle 6 is surrounded by a bellows or a spiral protective spring 14.
- the horizontal spindles 7; 8 are also surrounded by a bellows or a spiral protection spring 14. Both horizontal spindles 7; 8 are at their ends in a box 18; 19 stored.
- the upper horizontal spindle 7 is driven by a geared motor 17.
- the lower spindle 8 is connected to the upper spindle 7 by a chain in the rear box 19.
- the housing 9 and the receptacle 10 are advantageously formed from one part, in particular from a cast part.
- the feather key 2 is T-shaped and with its flange 24 is screwed onto the housing 9 from the outside. With the shaft 25, the feather key 2 is guided through the housing 9 into the threaded nut 23 (FIG. 6).
- the previous protective tube 22 serves as a guide 5 for the parallel key 2 actuated by the threaded nut 23.
- the bushing 13 which has been continuous so far is divided into two and is only inserted into the housing 9 at both ends.
- the feather key 2 which wears during the course of the movement and must be replaced at larger intervals, can be replaced more easily.
- the screwing of the flange 24 to the housing 9 only has to be loosened, the key 2 removed and replaced with a new one.
- the water lance blower works as follows:
- the blow pipe 1 is pivoted by actuating the vertical spindle 6 with the aid of the geared motor 20 and the horizontal spindles 7; 8 by means of the geared motor 17.
- the guide 5 executes a meandering movement with the blowpipe 1, which in the same way is mirrored by the water jet on the opposite combustion chamber wall. Due to the non-rotatable housing 9, the fulcrum of the blowpipe 1 is always in the plane of travel of the vertical spindle 6, but the blowpipe 1 can carry out all the necessary movements by being mounted in the gimbal-shaped cage 11.
- the blowing figure mathematically determined for the different combustion chamber surfaces for their cleaning can be converted into a directional movement sequence and can also be executed exactly. This eliminates the need to correct the practically executed blow figure.
- the area of application of the water lance blower according to the invention is significantly increased.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Washing And Drying Of Tableware (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Cookers (AREA)
- Nozzles (AREA)
Abstract
Description
Die Erfindung betrifft einen Wasserlanzenbläser zur Reinigung von Wärmeübertragern, insbesondere einer Brennkammerwand in Dampfkesseln, der mit seiner Mündung schwenkbar in der Brennkammerwand des Dampfkessels gelagert und an seinem hinteren Teil schwenkbar aufgehängt ist.The invention relates to a water lance blower for cleaning heat exchangers, in particular a combustion chamber wall in steam boilers, the mouth of which is pivotally mounted in the combustion chamber wall of the steam boiler and is pivotally suspended at its rear part.
Die Reinigung der Feuerräume von Dampfkesseln großer Leistung während des Betriebes erfolgt u. a. auch mit Hilfe von Wasserlanzenbläsern, die einen gebündelten Wasserstrahl durch den Feuerraum auf die gegenüberliegende Wand abgeben. Infolge des auftretenden Thermoschocks und der kinetischen Wasserstrahlenergie wird ein Abplatzen der Verschmutzungen aus Ruß, Schlacke und Asche bewirkt.
Dabei ist das Blasrohr, das zentrisch eine Blasdüse aufweist, gelenkig über eine Rollenführung mit einem, überlagerte Bewegungen ausführenden Antrieb verbunden. Zum Reinigen wird der Wasserlanzenbläser an eine geöffnete Luke herangefahren oder das Blasrohr wird durch ein in der Luke gelagertes Rohrstück in die Brennkammer eingefahren. Zum thermischen und mechanischen Schutz der Blasdüse wird nach dem zyklischen Reinigungsvorgang der Wasserlanzenbläser ausgeschwenkt bzw. linear nach hinten zurückgefahren. Dies erfordert eine aufwendige, störanfällige Mechanik, die außerdem eine Automatisierung des Reinigungsvorganges sehr erschwert. Zudem sind bei diesen Lösungen mehrfache Umlenkungen des Wasserzuführungssystems erforderlich, die mit hohen Druckverlusten verbunden sind.
Um einen Falschlufteintritt in den Dampfkessel und eine Verschmutzung aus dem Dampfkessel heraus zu vermeiden, muß die Rohrdurchführung durch die Brennkammerwand möglichst dicht ausgebildet sein.The cleaning of the fireboxes of high-performance steam boilers during operation is also carried out, among other things, with the help of water lance blowers, which emit a bundled water jet through the firebox on the opposite wall. As a result of the thermal shock occurring and the kinetic water jet energy, the soiling of soot, slag and ash is chipped off.
The blow pipe, which has a blow nozzle in the center, is connected in an articulated manner via a roller guide to a drive which performs superimposed movements. For cleaning, the water lance blower is moved up to an open hatch or the blow pipe is inserted into the combustion chamber through a piece of pipe stored in the hatch. For thermal and mechanical protection of the blow nozzle, the water lance blower is swung out after the cyclical cleaning process or retracted linearly backwards. This requires complex mechanics that are prone to failure, which also makes automation of the cleaning process very difficult. In addition, these solutions require multiple redirections of the water supply system, which are associated with high pressure losses.
In order to avoid the entry of false air into the steam boiler and contamination from the steam boiler, the pipe leadthrough the combustion chamber wall must be as tight as possible.
Zur Abdichtung für längsverschiebbare und drehbare Düsenrohre ist es bereits bekannt, daß das Düsenrohr durch eine Stopfbuchse geführt ist, die an der Frontplatte des Rußbläsers angeschraubt ist (DE 17 51 511).
Eine derartige Lösung ist jedoch nur für starre Wasserlanzenbläser anwendbar.To seal for longitudinally displaceable and rotatable nozzle pipes, it is already known that the nozzle pipe is guided through a stuffing box, which on the front plate of the Soot blower is screwed (DE 17 51 511).
However, such a solution can only be used for rigid water lance blowers.
Für schwenkbare Wasserlanzenbläser ist es bekannt, bereits den Bläserkopf in einer Luke der Brennkammerwand mittels eines Kugelgelenkes zu lagern (DD 145 476).
Nachteilig bei dieser Lösung ist, daß die Luke in der Brennkammerwand horizontal zu teilen und in die eingearbeitete kugelförmige Bohrung des Kugelgelenkes einzusetzen ist. Durch Eintreten von Verschmutzungen in die Gleitflächen des Kugelgelenkes verschleißen diese sehr schnell und die Standzeit ist damit sehr gering bzw. die Abdicht- und Schwenkfunktion wird nicht mehr gewährleistet, da das Kugelgelenk verklemmt.
Zum Auswechseln des Kugelgelenkes ist die gesamte Luke auszubauen, wozu der Dampfkessel außer Betrieb zu nehmen ist.For swiveling water lance blowers, it is known to mount the blower head in a hatch of the combustion chamber wall by means of a ball joint (DD 145 476).
The disadvantage of this solution is that the hatch must be divided horizontally in the combustion chamber wall and inserted into the incorporated spherical bore in the ball joint. If dirt enters the sliding surfaces of the ball joint, it wears out very quickly and the service life is very short, or the sealing and swiveling function is no longer guaranteed because the ball joint is jammed.
To replace the ball joint, the entire hatch must be removed, for which purpose the steam boiler must be taken out of operation.
Es ist auch bereits ein Wasserlanzenbläser bekannt, bei dem das Blasrohr nicht mehr axial verfahren werden muß, der Durchmesser der Rohrdurchführung durch die Luke verringert und zwischen den gleitenden Teilen der Rohrdurchführung ein Selbstreinigungseffekt erreicht wird (DD 235 102).
Konstruktiv wird dies dadurch erreicht, daß vorn an die Blasdüse ein Durchblaszylinder starr angeflanscht und die Mündung der Blasdüse in den Durchblaszylinder eingeführt ist, der Durchblaszylinder in dem aus einem Kugelsegment gebildeten Kugelgelenk starr befestigt und in seinem freien Teil geschlitzt oder mit Bohrungen versehen ist.
Nachteilig an diesem Wasserlanzenbläser ist, daß der Effekt des Kugelgelenkes hinsichtlich der Selbstreinigung nicht ausreichend eingetreten ist. Die Teilung des Gelenkes erweist sich nachteilig bei der Wärmebeaufschlagung durch die unterschiedliche Ausdehnung der beiden Hälften. Trotz einer schwenkbaren Rollenführung ist auch bei dieser Lösung an Brennkammern mit dem Blasstrahl auf der gegenüberliegenden Brennkammerwand keine exakt rechteckige Blasfigur erreichbar.A water lance blower is also already known in which the blow pipe no longer has to be moved axially, the diameter of the pipe leadthrough through the hatch is reduced and a self-cleaning effect is achieved between the sliding parts of the pipe leadthrough (DD 235 102).
In terms of design, this is achieved in that a blow-through cylinder is rigidly flanged to the blow nozzle at the front and the mouth of the blow nozzle is inserted into the blow-by cylinder, the blow-through cylinder is rigidly fixed in the ball joint formed from a ball segment and is slotted in its free part or provided with bores.
A disadvantage of this water lance blower is that the effect of the ball joint with regard to self-cleaning has not occurred sufficiently. The division of the joint proves disadvantageous when heat is applied due to the different expansion of the two halves. Despite a swiveling roller guide, this solution also has combustion chambers with the blowing jet on the opposite one Combustion chamber wall cannot reach an exactly rectangular blow figure.
Der Erfindung liegt die Aufgabe zugrunde, einen Wasserlanzenbläser, der mit seiner Mündung schwenkbar in der Brennkammerwand des Dampfkessels gelagert und an seinem hinteren Ende schwenkbar aufgehängt ist, so auszubilden, daß an der Mündung eine in der Ebene allseitige Bewegbarkeit ohne Verschmutzungen gegeben ist und der auftretende Strahl an der gegenüberliegenden Kesselwand eine exakt definierte Bahn beschreibt.The invention has for its object to form a water lance blower, which is pivotally mounted with its mouth in the combustion chamber wall of the steam boiler and pivotally suspended at its rear end, so that there is movement in the plane on all sides without contamination and the occurring Beam on the opposite wall of the boiler describes a precisely defined path.
Erfindungsgemäß wird dies dadurch erreicht, daß an der Miindung des Blasrohres in der Brennkammerwand ein Flansch vorgesehen ist, der über eine kardanische Aufhängung in der Brennkammerwand befestigt ist, das hintere Teil des Blasrohres in einer Führung angeordnet ist, die auf einer senkrechten Spindel höhenverschiebbar ist, wobei die senkrechte Spindel oben und unten jeweils auf einer waagerechten Spindel horizontal verschiebbar ist und die Führung aus einem Gehäuse gebildet ist, das nicht drehbar auf der senkrechten Spindel sitzt und an der Seite eine gabelförmige Aufnahme trägt, in deren Querachse ein Käfig drehbar angeordnet ist, der in seinem Innenteil eine in der Längsachse der gabelförmigen Aufnahme drehbar angeordnete Hülse aufnimmt, in der das Blasrohr axial verschiebbar gelagert ist.According to the invention, this is achieved in that a flange is provided on the mouth of the blowpipe in the combustion chamber wall, which flange is fastened in the combustion chamber wall by means of a gimbal, the rear part of the blowpipe is arranged in a guide which is vertically displaceable on a vertical spindle, the vertical spindle being horizontally displaceable at the top and bottom of a horizontal spindle and the guide being formed from a housing which is not rotatably seated on the vertical spindle and carries a fork-shaped receptacle on the side, in the transverse axis of which a cage is rotatably arranged, which receives in its inner part a sleeve rotatably arranged in the longitudinal axis of the fork-shaped receptacle, in which the blowpipe is mounted so as to be axially displaceable.
In weiterer Ausbildung ist die senkrechte Spindel von einem feststehenden Schutzrohr mit einer Längsnut umgeben, auf der senkrechten Spindel eine Gewindemutter mit einer Paßfeder angeordnet, wobei die Paßfeder in der Längsnut geführt ist und aus dieser herausragend eine Buchse aufnimmt, auf der das Gehäuse sitzt. Die senkrechte Spindel ist von einem Getriebemotor angetrieben.
In vorteilhafter Weise sind das Gehäuse und die Aufnahme aus einem Teil gebildet und die Paßfeder ist T-förmig ausgebildet, mit ihrem Flansch von außen an dem Gehäuse befestigt und mit dem Schaft durch das Gehäuse hindurch bis in die Gewindemutter geführt. Die senkrechte und die waagerechte Spindel sind von einem Faltenbalg oder einer Spiralschutzfeder umgeben.
Beide waagerechte Spindeln sind an ihren Enden in einem vorderen und hinteren Kasten gelagert, die obere Spindel ist von einem Getriebemotor angetrieben und die untere Spindel über eine Kette in dem hinteren Kasten mit der oberen Spindel verbunden.In a further embodiment, the vertical spindle is surrounded by a fixed protective tube with a longitudinal groove, a threaded nut with a feather key is arranged on the vertical spindle, the feather key being guided in the longitudinal groove and projecting from this a socket on which the housing sits. The vertical spindle is driven by a gear motor.
The housing and the receptacle are advantageously formed from one part and the feather key is T-shaped, attached with its flange to the outside of the housing and guided with the shaft through the housing into the threaded nut. The vertical and horizontal spindles are surrounded by a bellows or a spiral protection spring.
Both horizontal spindles are supported at their ends in a front and rear box, the upper spindle is driven by a gear motor and the lower spindle is connected to the upper spindle by a chain in the rear box.
Die Erfindung wird nachstehend an einem Ausführungsbeispiel näher erläutert. In der zugehörigen Zeichnung zeigen:
- Fig. 1: eine Vorderansicht des Wasserlanzenbläsers
- Fig. 2: eine Seitenansicht gemäß Fig. 1
- Fig. 3: die Führung für das Blasrohr
- Fig. 4: einen Schnitt durch die Führung gemäß Fig. 3
- Fig. 5: eine andere Variante der Führung für das Blasrohr in einem Teilschnitt
- Fig. 6: einen Schnitt durch das Gehäuse mit der Paßfeder nach Fig. 5
- Fig. 1: a front view of the water lance blower
- FIG. 2: a side view according to FIG. 1
- Fig. 3: the guide for the blowpipe
- 4: a section through the guide according to FIG. 3
- Fig. 5: another variant of the guide for the blow pipe in a partial section
- 6: a section through the housing with the feather key according to FIG. 5
Der Wasserlanzenbläser besteht im wesentlichen aus einem Blasrohr 1, einer kardanischen Aufhängung 3, einer Führung 5, einer senkrechten Spindel 6 und zwei waagerechten Spindeln 7; 8. Das Blasrohr 1 sitzt mit seiner Mündung bündig in einem Flansch, der über eine kardanische Aufhängung 3 in an sich bekannter Weise über mehrere Bolzen in einer Luke der Brennkammerwand 4 befestigt ist. Dabei liegen je zwei Bolzen in zwei unterschiedlichen Achsen, so daß sich die Teile der kardanischen Aufhängung 3 in den zwei gewünschten Ebenen bewegen können. Das hintere Teil des Blasrohres 1 sitzt in der Führung 5, die auf der senkrechten Spindel 6 höhenverschiebbar angeordnet ist. Die senkrechte Spindel 6 ist oben auf der waagerechten Spindel 7 und unten auf der waagerechten Spindel 8 gelagert und auf diesen horizontal verschiebbar. Die senkrechte Spindel 6 wird von einem Getriebemotor 20 angetrieben. Die Führung 5 besteht aus einem Gehäuse 9, das nicht drehbar auf der senkrechten Spindel 6 sitzt und an der Seite eine gabelförmige Aufnahme 10 trägt, in der ein kardanförmiger Käfig 11 angeordnet ist. Der Käfig 11 ist in seinem Innenteil als Hülse 12 ausgebildet und nimmt darin das Blasrohr 1 axial verschiebbar auf. Dazu sind an beiden Enden der Hülse 12 Gleitbuchsen 21 vorgesehen. Die senkrechte Spindel 6 ist von einem feststehenden Schutzrohr 22 umgeben, das mit einer Längsnut versehen ist. Auf der Spindel 6 ist eine Gewindemutter 23 mit einer Paßfeder 2 angeordnet. Die Paßfeder 2 ist in der Längsnut geführt, ragt aus dieser heraus und nimmt eine Buchse 13 auf, auf der das Gehäuse 9 sitzt. Um die Längsnut im Schutzrohr 22 abzudecken und um das Schutzrohr 22 zu schützen, ist die senkrechte Spindel 6 von einem Faltenbalg oder einer Spiralschutzfeder 14 umgeben. Die waagerechten Spindeln 7; 8 sind ebenfalls von einem Faltenbalg oder einer Spiralschutzfeder 14 umgeben. Beide waagerechten Spindeln 7; 8 sind an ihren Enden in einem Kasten 18; 19 gelagert. Die obere waagerechte Spindel 7 ist von einem Getriebemotor 17 angetrieben. Die untere Spindel 8 ist über eine Kette in dem hinteren Kasten 19 mit der oberen Spindel 7 verbunden.The water lance blower consists essentially of a
In vorteilhafter Weise sind bei einer anderen Variante zur Führung des Blasrohres gemäß Fig. 5 und 6 das Gehäuse 9 und die Aufnahme 10 aus einem Teil, insbesondere aus einem Gußteil, gebildet. Die Paßfeder 2 ist T-förmig ausgebildet und mit ihrem Flansch 24 von außen an das Gehäuse 9 fest angeschraubt. Mit dem Schaft 25 ist die Paßfeder 2 durch das Gehäuse 9 hindurch bis in die Gewindemutter 23 geführt (Fig. 6).In another variant for guiding the blowpipe according to FIGS. 5 and 6, the
Das bisherige Schutzrohr 22 dient in diesem Fall als Führung 5 für die von der Gewindemutter 23 betätigte Paßfeder 2. Die bisher durchgehende Buchse 13 ist zweigeteilt und nur noch an beiden Enden in das Gehäuse 9 eingesetzt. Bei dieser Variante läßt sich die Paßfeder 2, die beim Bewegungsablauf verschleißt und in größeren Abständen ausgetauscht werden muß, leichter auswechseln. Die Verschraubung des Flansches 24 mit dem Gehäuse 9 muß nur gelöst, die Paßfeder 2 entfernt und gegen eine neue ausgetauscht werden.In this case, the previous
Die Wirkungsweise des Wasserlanzenbläsers ist folgende:The water lance blower works as follows:
Das Schwenken des Blasrohres 1 erfolgt durch Betätigung der senkrechten Spindel 6 mit Hilfe des Getriebemotors 20 und der waagerechten Spindeln 7; 8 mittels des Getriebemotors 17. Dabei führt die Führung 5 mit dem Blasrohr 1 eine mäanderförmige Bewegung aus, die in gleicher Weise spiegelbildlich durch den Wasserstrahl auf der gegenüberliegenden Brennkammerwand nachvollzogen wird. Durch das nicht drehbare Gehäuse 9 liegt der Drehpunkt des Blasrohres 1 immer in der Verfahrebene der senkrechten Spindel 6, wobei das Blasrohr 1 aber durch die Lagerung im kardanförmigen Käfig 11 alle erforderlichen Bewegungen ausführen kann.The
Damit wird erreicht, daß gegenüber der bisher kurvenförmigen Bewegungsbahn, die als Folge eine unzureichende geradlinige Kontur auf der gegenüberliegenden Brennkammerwand hat, eine ständig geradlinige Bewegungsbahn erzielt wird, die auch eine geradlinige Kontur gewährleistet.This ensures that, compared to the previously curved path of motion, which as a result has an inadequate rectilinear contour on the opposite combustion chamber wall, a continuously rectilinear trajectory is achieved which also ensures a rectilinear contour.
Damit kann kontrolliert ein bestimmter Bereich auf der gegenüberliegenden Brennkammerwand, z. B. eine Brenneröffnung oder Rauchgas-Rücksaugung, bei der Reinigung ausgespart werden.This allows a certain area on the opposite combustion chamber wall to be controlled, e.g. B. a burner opening or flue gas re-suction can be left out during cleaning.
Durch die erfindungsgemäße Lösung, die erstmals eine exakte geradlinige Führung des Blasstrahles gewährleistet, kann die für die unterschiedlichsten Brennkammerflächen zu deren Reinigung mathematisch ermittelte Blasfigur in einen gerichteten Bewegungsablauf umgesetzt und auch exakt ausgeführt werden.
Dadurch erübrigt sich eine Korrektur der praktisch ausgeführten Blasfigur.
Der Einsatzbereich des erfindungsgemäßen Wasserlanzenbläsers wird wesentlich erhöht.With the solution according to the invention, which for the first time ensures an exact linear guidance of the blowing jet, the blowing figure mathematically determined for the different combustion chamber surfaces for their cleaning can be converted into a directional movement sequence and can also be executed exactly.
This eliminates the need to correct the practically executed blow figure.
The area of application of the water lance blower according to the invention is significantly increased.
Aufstellung der verwendeten Bezugszeichen
- 1
- Blasrohr
- 2
- Paßfeder
- 3
- Kardangelenk
- 4
- Brennkammerwand
- 5
- Führung
- 6
- Spindel
- 7
- Spindel
- 8
- Spindel
- 9
- Gehäuse
- 10
- Aufnahme
- 11
- Käfig
- 12
- Hülse
- 13
- Buchse
- 14
- Spiralschutzfeder
- 15
- Rahmen
- 16
- Kette
- 17
- Getriebemotor
- 18
- Kasten
- 19
- Kasten
- 20
- Getriebemotor
- 21
- Gleitbuchsen
- 22
- Schutzrohr
- 23
- Gewindemutter
- 24
- Flansch
- 25
- Schaft
- 1
- Blowpipe
- 2nd
- adjusting spring
- 3rd
- universal joint
- 4th
- Combustion chamber wall
- 5
- guide
- 6
- spindle
- 7
- spindle
- 8th
- spindle
- 9
- casing
- 10th
- admission
- 11
- Cage
- 12th
- Sleeve
- 13
- Rifle
- 14
- Spiral protection spring
- 15
- frame
- 16
- Chain
- 17th
- Gear motor
- 18th
- box
- 19th
- box
- 20th
- Gear motor
- 21
- Sliding bushings
- 22
- Protective tube
- 23
- Threaded nut
- 24th
- flange
- 25th
- shaft
Claims (6)
- A water lance for cleaning a furnace wall (4) in steam boilers by means of a blast pipe (1) with a swivelling mouth mounted in the combustion chamber wall of the steam boiler and with its rear end suspended in such a manner that it can be moved in all directions,
characterized in that
the mouth of the blast pipe (1) in the combustion chamber wall (4) is provided with a flange, which is mounted to the combustion chamber wall (4) on a gimbal (3) in the known art, that the rear end of the blast pipe (1) is mounted to a guiding device (5), itself attached to a vertical spindle (6) to allow height adjustment, with both the top and bottom of the vertical spindle (6) attached to horizontal spindles (7; 8) to allow horizontal adjustment, that the guiding device (5) consists of a non-rotatable housing (9) which is seated on the vertical spindle (6) and supports a fork-shaped receiver (10), along the lateral axis of which a rotatable retainer (11) is mounted, in the interior of which a rotatable sleeve (12) is provided, into which the blast pipe (1) is mounted to allow axial adjustment. - A water lance as claimed in claim 1, characterized in that the vertical spindle (6) is surrounded by a stationary sheath tube (22) with a longitudinal keyway, that a threaded nut (23) is attached to the vertical spindle (6) by means of a feather key, wherein the feather key (2) is guided along the longitudinal keyway, the feather key projecting out of the keyway and supporting a bearing bush (13) onto which the casing (9) is mounted.
- A water lance as claimed in claims 1 and 2, characterized in that the casing (9) and the receiver (10) are made from one piece, that the feather key (2) is T-shaped with its flange (24) fastened to the casing (9) from the outside and with its shaft (25) passed through the casing (9) and into the threaded nut (23).
- A water lance as claimed in claims 1 to 3, characterized in that the vertical spindle (6) is driven by a gear motor.
- A water lance as claimed in claims 1 to 4, characterized in that the vertical spindle (6) and the horizontal spindles (7; 8) are surrounded by an expansion bellows or by a protective flat spiral spring (14).
- A water lance as claimed in claims 1 to 5 characterized in that the horizontal spindles (7; 8) are attached at their ends to a front housing (18) and a rear housing (19), that the upper spindle (7) is driven by a gear motor (17) and the lower spindle (8) is connected to the upper spindle (7) via a chain in the rear housing (19).
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4142448A DE4142448A1 (en) | 1991-12-18 | 1991-12-18 | Water-jet lance for cleaning heat-exchangers |
| DE4142448 | 1991-12-18 | ||
| DE4239410A DE4239410C2 (en) | 1991-12-18 | 1992-11-17 | Water lance blowers for cleaning heat exchangers |
| DE4239410 | 1992-11-17 | ||
| PCT/DE1992/001050 WO1993012398A1 (en) | 1991-12-18 | 1992-12-09 | Water lance blower for cleaning heat exchangers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0616680A1 EP0616680A1 (en) | 1994-09-28 |
| EP0616680B1 true EP0616680B1 (en) | 1996-05-15 |
Family
ID=25910402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92924572A Expired - Lifetime EP0616680B1 (en) | 1991-12-18 | 1992-12-09 | Water lance blower for cleaning heat exchangers |
Country Status (20)
| Country | Link |
|---|---|
| US (1) | US5503115A (en) |
| EP (1) | EP0616680B1 (en) |
| JP (1) | JP3155553B2 (en) |
| KR (1) | KR100265920B1 (en) |
| CN (1) | CN1053041C (en) |
| AT (1) | ATE138190T1 (en) |
| AU (1) | AU672375B2 (en) |
| CA (1) | CA2126184A1 (en) |
| CZ (1) | CZ281762B6 (en) |
| DE (2) | DE4239410C2 (en) |
| DK (1) | DK0616680T3 (en) |
| ES (1) | ES2089582T3 (en) |
| HR (1) | HRP921429B1 (en) |
| HU (1) | HU217469B (en) |
| RU (1) | RU2100736C1 (en) |
| SI (1) | SI9200394B (en) |
| SK (1) | SK281985B6 (en) |
| TR (1) | TR26991A (en) |
| WO (1) | WO1993012398A1 (en) |
| YU (1) | YU48339B (en) |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4415010A1 (en) * | 1994-04-29 | 1995-11-02 | Bergemann Gmbh | Procedure for guiding an elongated element |
| US6035811A (en) * | 1995-05-30 | 2000-03-14 | Clyde Bergemann Gmbh | Water lance blower positioning system |
| AU6003396A (en) * | 1995-05-30 | 1996-12-18 | Clyde Bergemann Gmbh | Process and associated water jet blower for cleaning predeterminable surfaces |
| EP0828984B1 (en) * | 1995-05-30 | 2002-02-27 | Clyde Bergemann GmbH | System for driving a water jet blower with a housing for a confining and rinsing medium |
| US5925193A (en) * | 1995-05-30 | 1999-07-20 | Clyde Bergemann Gmbh | Method for cleaning pre-determinable surfaces of a heatable internal chamber and associated water lance blower |
| WO1996038704A1 (en) * | 1995-05-30 | 1996-12-05 | Clyde Bergemann Gmbh | Water jet blast with shortened water lance |
| US6639962B2 (en) * | 1998-08-12 | 2003-10-28 | Hitachi, Ltd. | Preventive maintenance method and apparatus of a structural member in a reactor pressure vessel |
| US6418948B1 (en) | 1998-10-30 | 2002-07-16 | Thomas G. Harmon | Apparatus and method for removing concrete from interior surfaces of a concrete mixing drum |
| ATE262671T1 (en) | 1999-07-08 | 2004-04-15 | Vattenfall Europe Generation | WATER LANCE BLOWER FOR CLEANING HEAT EXCHANGERS, ESPECIALLY A COMBUSTION CHAMBER HEATING SURFACE |
| DE19946188C1 (en) * | 1999-09-21 | 2001-05-31 | Ver Energiewerke Ag | Water lance blower for cleaning heat exchanger has cardan joint on vertical linear unit with double frame structure |
| DE10009818A1 (en) * | 2000-03-01 | 2001-09-06 | Clyde Bergemann Gmbh | Water lance for cleaning residue from the walls of a burner chamber at a heating installation is mounted with its opening at a hatch with a drive system and a remote control/diagnosis connection |
| AU2001286955A1 (en) | 2000-08-31 | 2002-03-13 | Clyde Bergemann, Inc. | Sootblower lance port with leak resistant cardon joint |
| DE10044799C1 (en) | 2000-09-11 | 2002-06-27 | Clyde Bergemann Gmbh | Ball joint bearing for a water lance of a water lance blower |
| US6655397B2 (en) | 2001-03-27 | 2003-12-02 | Diamond Power International, Inc. | Articulating water monitor cleaning device |
| US6969354B1 (en) * | 2001-09-25 | 2005-11-29 | Acuson Corporation | Adaptable intraoperative or endocavity ultrasound probe |
| US7026598B1 (en) | 2002-02-20 | 2006-04-11 | Clyde Bergemann, Inc. | Vector-based targeting control for a water cannon |
| DE102004010771B4 (en) * | 2004-03-05 | 2015-09-24 | Bilfinger Rosink Gmbh | Device for moving a blower tube |
| AU2006319757B2 (en) * | 2005-11-30 | 2009-11-05 | Mack Innovations (Australia) Pty Ltd | Water lance assembly |
| US7637129B2 (en) * | 2007-10-04 | 2009-12-29 | Sheng-Ming Wang | Air jet pressurized clothes washing machine |
| US8974607B2 (en) * | 2011-12-28 | 2015-03-10 | Saudi Arabian Oil Company | Cleaning apparatus for heat exchange tubes of air cooled heat exchangers |
| CN104180710A (en) * | 2013-05-22 | 2014-12-03 | 天津市通洁高压泵制造有限公司 | Automatic cleaning system for evaporator based on high-pressure water jet |
| CN103353255B (en) * | 2013-06-04 | 2017-05-10 | 安徽华速机器人科技有限公司 | Spray head back locking structure of on-line cleaning robot of condenser |
| CN103822531B (en) * | 2014-03-11 | 2015-07-22 | 刘胜伟 | Floor heating pipe dredging device and use method thereof |
| CN109013603A (en) * | 2018-07-04 | 2018-12-18 | 合肥欧语自动化有限公司 | A kind of cleaning device of chemical industry equipment |
| CN113008071B (en) * | 2021-02-19 | 2022-07-08 | 安徽理工大学 | Gun feeding device for condenser cleaning robot |
| WO2022272078A1 (en) * | 2021-06-24 | 2022-12-29 | Path Environmental Technology, LLC | Apparatus for cleaning a surface with a liquid jet and related methods |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE235102C (en) * | ||||
| DE145476C (en) * | ||||
| US1550943A (en) * | 1922-01-11 | 1925-08-25 | Baker Steam Motor Car And Mfg | Water-tube boiler |
| GB272186A (en) * | 1926-06-05 | 1927-11-10 | Daniel Guggenheim | Multiple tube cleaner |
| FR1362718A (en) * | 1963-05-07 | 1964-06-05 | Diamond Power Speciality | Improvements to Soot Blower Sets |
| US3354490A (en) * | 1964-06-15 | 1967-11-28 | Power Tube Inc | Boiler tube cleaning apparatus |
| DE1751511A1 (en) * | 1968-06-11 | 1971-03-18 | Hans Bergmann | Sealing for longitudinally displaceable and rotatable nozzle pipes for sootblowers |
| DD145476A3 (en) * | 1979-02-12 | 1980-12-17 | Friedrich Bude | DEVICE FOR CLEANING HEAT TRANSFER |
| DD226061A1 (en) * | 1983-07-14 | 1985-08-14 | Orgreb Inst Kraftwerke | METHOD AND ARRANGEMENT FOR OPERATING A WATER LIGHT BLADDER |
| FR2662956A1 (en) * | 1990-06-11 | 1991-12-13 | Fives Cail Babcock | WASHING DEVICE, PARTICULARLY FOR A CRYSTALLIZATION APPARATUS WITH CONTINUOUS OPERATION |
| DE4142448A1 (en) * | 1991-12-18 | 1993-07-08 | Ver Energiewerke Ag | Water-jet lance for cleaning heat-exchangers |
| US5337441A (en) * | 1993-02-10 | 1994-08-16 | Mitsubishi Jukogyo Kabushiki Kaisha | Extraction/insertion type soot blowing apparatus |
-
1992
- 1992-11-17 DE DE4239410A patent/DE4239410C2/en not_active Expired - Lifetime
- 1992-12-09 CA CA002126184A patent/CA2126184A1/en not_active Abandoned
- 1992-12-09 AU AU30811/92A patent/AU672375B2/en not_active Expired
- 1992-12-09 HU HU9401827A patent/HU217469B/en unknown
- 1992-12-09 EP EP92924572A patent/EP0616680B1/en not_active Expired - Lifetime
- 1992-12-09 ES ES92924572T patent/ES2089582T3/en not_active Expired - Lifetime
- 1992-12-09 JP JP51052193A patent/JP3155553B2/en not_active Expired - Fee Related
- 1992-12-09 RU RU94030374/06A patent/RU2100736C1/en active
- 1992-12-09 KR KR1019940702090A patent/KR100265920B1/en not_active Expired - Lifetime
- 1992-12-09 DE DE59206325T patent/DE59206325D1/en not_active Expired - Lifetime
- 1992-12-09 CZ CZ941497A patent/CZ281762B6/en not_active IP Right Cessation
- 1992-12-09 SK SK728-94A patent/SK281985B6/en not_active IP Right Cessation
- 1992-12-09 AT AT92924572T patent/ATE138190T1/en not_active IP Right Cessation
- 1992-12-09 DK DK92924572.8T patent/DK0616680T3/en active
- 1992-12-09 WO PCT/DE1992/001050 patent/WO1993012398A1/en not_active Ceased
- 1992-12-16 SI SI9200394A patent/SI9200394B/en unknown
- 1992-12-17 HR HRP4239410.4A patent/HRP921429B1/en not_active IP Right Cessation
- 1992-12-18 TR TR01248/92A patent/TR26991A/en unknown
- 1992-12-18 YU YU108092A patent/YU48339B/en unknown
- 1992-12-18 CN CN92115326.0A patent/CN1053041C/en not_active Expired - Lifetime
-
1994
- 1994-06-17 US US08/275,823 patent/US5503115A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| HRP921429B1 (en) | 1998-06-30 |
| CN1076019A (en) | 1993-09-08 |
| HU9401827D0 (en) | 1994-09-28 |
| AU3081192A (en) | 1993-07-19 |
| CZ149794A3 (en) | 1995-01-18 |
| SI9200394A (en) | 1993-06-30 |
| CA2126184A1 (en) | 1993-06-24 |
| CZ281762B6 (en) | 1997-01-15 |
| SK281985B6 (en) | 2001-09-11 |
| YU108092A (en) | 1996-01-08 |
| DK0616680T3 (en) | 1996-09-30 |
| DE59206325D1 (en) | 1996-06-20 |
| HUT67888A (en) | 1995-05-29 |
| CN1053041C (en) | 2000-05-31 |
| HU217469B (en) | 2000-02-28 |
| EP0616680A1 (en) | 1994-09-28 |
| US5503115A (en) | 1996-04-02 |
| JPH07502105A (en) | 1995-03-02 |
| SI9200394B (en) | 2002-02-28 |
| HRP921429A2 (en) | 1994-08-31 |
| JP3155553B2 (en) | 2001-04-09 |
| TR26991A (en) | 1994-09-13 |
| ATE138190T1 (en) | 1996-06-15 |
| SK72894A3 (en) | 1995-02-08 |
| DE4239410C2 (en) | 1997-07-17 |
| ES2089582T3 (en) | 1996-10-01 |
| YU48339B (en) | 1998-05-15 |
| DE4239410A1 (en) | 1994-05-19 |
| RU2100736C1 (en) | 1997-12-27 |
| AU672375B2 (en) | 1996-10-03 |
| KR100265920B1 (en) | 2000-09-15 |
| WO1993012398A1 (en) | 1993-06-24 |
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