EP2828601A1 - Beater for dust-affected tube walls - Google Patents

Beater for dust-affected tube walls

Info

Publication number
EP2828601A1
EP2828601A1 EP13713097.7A EP13713097A EP2828601A1 EP 2828601 A1 EP2828601 A1 EP 2828601A1 EP 13713097 A EP13713097 A EP 13713097A EP 2828601 A1 EP2828601 A1 EP 2828601A1
Authority
EP
European Patent Office
Prior art keywords
plunger
annular
annular space
ram
tubular 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.)
Granted
Application number
EP13713097.7A
Other languages
German (de)
French (fr)
Other versions
EP2828601B1 (en
Inventor
Lothar Semrau
Guido LANGENKAMP
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
ThyssenKrupp Uhde GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ThyssenKrupp Uhde GmbH filed Critical ThyssenKrupp Uhde GmbH
Publication of EP2828601A1 publication Critical patent/EP2828601A1/en
Application granted granted Critical
Publication of EP2828601B1 publication Critical patent/EP2828601B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F28G7/00—Cleaning by vibration or pressure waves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/18—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency wherein the vibrator is actuated by pressure fluid
    • B06B1/183—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency wherein the vibrator is actuated by pressure fluid operating with reciprocating masses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • B08B7/02—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/45—Scale remover or preventor
    • Y10T29/4572—Mechanically powered operator
    • Y10T29/4583—Hammer

Definitions

  • the invention is directed to a device for introducing KlopfILL. Pulse movements in the tube walls within a pressure vessel, wherein the knock pulse to the pipe wall donating first plunger pressure vessel wall, led into a pressurized first annulus, passes, which is acted upon by a second, guided in a further tubular chamber plunger.
  • knockers especially in heat exchangers in chemical processes that are used inside or outside of pressure vessels, eg.
  • pipe walls of the pressure vessel for coal gasification in which one endeavors to maintain the mode of action and the heat transfer into the pipe walls at a high level.
  • Such devices for introducing impact pulses into the tube walls, so that the dust can trickle are described for example in WO 2010/0637552 AI or WO 2010/063755 AI.
  • a pneumatic knocker shows the DE 196 52 707 C2
  • a knocking or impact device to boilers is also disclosed in DE 10 2010 007 197 AI, to name just a few examples.
  • the object of the invention is to provide a solution with which is compensated over both the longest possible time of wear of Rammbgess or plunger, which acts on the pipe wall, and an effective seal against the environment is guaranteed.
  • this object is achieved according to the invention in that the second plunger with at least one of the inner wall of the tubular chamber acting first guide in the region of the first plunger-contacting end and in the region of its protruding from the tubular chamber end a second, provided with a sealing element guide is provided and that the second plunger between the two guides is enclosed by a gas-tight fixed compensator.
  • the compensator or bellows ensures that no gas can escape from the pressure vessel into the environment, without the mobility of the plunger, which transfers the knock or pulse movements to the pipe wall, is influenced.
  • a possible embodiment of the invention is that the second plunger with compensator in the tubular chamber is surrounded by a compression spring, but a preferred embodiment of the invention is that the leadership of the second plunger with seals to form a sealed against the environment annular space is provided, wherein the outwardly facing plunger is surrounded by a static seal.
  • a static seal may have different physical and chemical properties than, for example, a dynamic seal, e.g. is subject to abrasion during its movement.
  • An embodiment according to the invention is that the seals of O-ring seals are formed, which are positioned in the annular discs surrounding the second plunger, at least one annular disc provided with an annular flange pointing into the annular space for fixing the one end of the compensator is.
  • a modified embodiment of the seal is that the static seal is positioned between an annular disc surrounding the second plunger and the end face of the annular space, wherein the annular disc is provided with an annular flange pointing into the annular space for fixing the one end of the compensator.
  • the dust passage preventing filter element is provided in the annulus a surrounding the first plunger.
  • An embodiment of such a passage of dust-preventing element is that the filter element of one between two Ring discs positioned sintered metal tube piece is formed, wherein the annular discs closely surround the first plunger, while the sintered metal tube piece surrounds the first plunger at a distance.
  • An embodiment of the filter element is that the ring disk facing the annular space is provided at its edge adjacent to the first ram edge and the second annular disc on its inner wall of the annular space contacting edge with recesses, wherein it can also be provided that the respective other peripheral edge of the annular discs has an O-ring seal. This gives the possibility of a flow through the sintered metal pipe section.
  • the invention provides that the protruding from the chamber end of the second plunger is equipped with a change in length, in particular the abrasion of the first plunger, recognizable making electronic or mechanical device.
  • a robust, simple and less susceptible to interference design of such an element may be that the protruding from the chamber plunger end is equipped with a pointer to which a fixed scale is assigned.
  • Fig. 1 is a simplified sectional view through an overall view of the device according to the invention, in the
  • FIG. 5 is an enlarged view of a filter element surrounding the ram or ram.
  • the device shown in Fig. 1 in a simplified sectional view, generally designated 1, is used for applying knock pulses on a partially indicated pipe wall 2 in a pressure vessel 3, as used for example in coal gasification plants.
  • the device 1 is essentially constituted by a knock pulse generator 4 or actuator triggering the knocking impulses, whose e.g. pneumatically actuated thrust piston 5 in pulses via a piston rod 6, hereinafter referred to as second plunger 6, to a ram, hereinafter called the first plunger 7 transmits, which penetrates the pressure vessel wall 3 and via e.g. a baffle plate 18 attached to the tube wall which introduces momentum into the tube wall. Since the interior of the pressure vessel 3 both has a high temperature of about 500 ° C and a high pressure of e.g. 50 bar, the passage of the first plunger 7 is guided substantially gas-tight in the pressure vessel, including a jacket tube 8 with a pipe socket 9, which is welded to the pressure vessel 3, is screwed.
  • a knock pulse generator 4 or actuator triggering the knocking impulses whose e.g. pneumatically actuated thrust piston 5 in pulses via a piston rod 6, hereinafter referred to as second plunger 6, to a ram, here
  • the first plunger 7 On the side facing the tube wall, the first plunger 7 is guided in a guide 10 and protrudes with its end facing away from the tube wall outside of the pressure vessel in the end face of a designated 11 tubular chamber, in which also a piston rod, further as the second plunger. 6 designated, is guided.
  • a generally designated 12 filter element is provided which is intended to ensure that no fine dust and thus also the fines transporting gas escapes to the outside.
  • a compressed gas line 13 in the block flange 14 of the jacket tube 8 is provided in the annular space 15 between the jacket tube 8 and the first plunger 7 to build up a pressure which is slightly higher than the internal pressure in the pressure vessel 3.
  • the block flange 14 serves for fastening the jacket tube
  • the surrounding the piston rod and the second plunger 6 tubular chamber 11 is equipped in the example shown in FIG. 1 with two mounting flanges 16 and 17, wherein the mounting flange 16 for fixing the tubular chamber 11 on Block flange 14 is used, while the mounting flange 17 serves to attach the knock pulse generator 4 to the tubular chamber 11.
  • the guided in the tubular chamber 11 second plunger 6 has at its the first plunger 7 end facing a guide 6a, which is integrally formed in the example of FIG. 1 with the second plunger 6 as a disc and at its end an O-ring Seal, wherein other designs are shown in the following figures.
  • the guide 6a can also be formed by a separate annular disc.
  • the plunger 6 is also held in a guide 6 b, with its end 6 c protruding from the tubular chamber 11.
  • This second guide 6b is part of a flange formed as an annular ring element 21, wherein in the example of FIG. 1 between the flange 12 and the mounting flange 17, a static seal 19 is provided.
  • a compensator 20 is fixed, such that the annulus designated 22 between the tubular chamber 11 and the second plunger by pressure-tight fixation of the compensator to the guides 6a and 6b gas-tight relative to the Environment is completed, in the example of FIG. 1 in conjunction with the seal 19th
  • the annular space 22 is acted upon via a gas supply line 23 with a pressurized gas, such that the pressure in the annular space 22nd acts on the guide 6a and thus, since it is freely movable and sealed by a seal 24 in the tubular chamber 11, the second plunger 6 presses on the first plunger 7, such that during wear of the plunger 7 a fixed contact of the first plunger 6 on the second plunger 7 is always guaranteed.
  • FIG. 1 An enlarged view of the area of the second guide 6b of the second plunger 6 in the tubular chamber 11, in particular the area where the plunger 6 emerges from the chamber to the outside, is shown enlarged in FIG.
  • a linkage e.g. from a plurality of threaded rods 25a, indicated with which the knock pulse generator 4 is fixed to the mounting flange 17.
  • Shown here is a way to arrange on one of the threaded rods 25, a device 26, which makes it possible to make visually the penetration of the piston rod 6 in the tubular chamber 11 in wear of the first plunger 7, z. B. by means of a pointer in conjunction with a scale 27.
  • Such a device 26 may also be formed electronically or make the change in position of the second plunger 6 in any other way.
  • the second guide 6b is a part of an annular disc with an outer O-ring seal 24a designed as a static seal, the second guide 6b being held by a fixing flange 28 which is screwed to the tubular chamber 11.
  • Fig. 4 is a modification of the embodiment of FIG. 1 that the compensator 20 is surrounded by a compression spring 29, which is positioned in the interior of the annular space 22 and pressure-tightly supported on the first guide 6a and the second guide 6b. Since the first guide 6a is slidably mounted with the second plunger 6, the compression spring 29 ensures a permanent abutment of the second plunger 6 on the first plunger 7, as can be seen also from FIG.
  • Fig. 5 is enlarged, inter alia, the filter element 12 is shown, which is essentially formed of two annular discs 30 and 31, wherein between the two annular discs 30 and 31 at a distance from the first plunger 7 and the casing tube 8, a sintered metal tube piece 32 is positioned. As shown in dashed lines, the annular disk 30 has an outer ring sleeve 33 abutting the jacket tube 8, wherein channels or grooves 34 are provided in the voltage applied to the first plunger 7 end face of the annular disc 30.
  • the annular disc 31 has a ring seal, z.
  • Gas flow in the opposite direction from the pressure vessel 3 is able to prevent.
  • dust particles are deposited on the outer surface of the sintered metal pipe section, so that any escaping gas is free of dust particles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Lens Barrels (AREA)
  • Measuring Fluid Pressure (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Powder Metallurgy (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

With a device (1) for introducing beating or pulsed movements into tube walls within a pressure vessel (3), wherein a first ram (7) imparting the beating pulse to the tube wall (2) passes through the pressure vessel wall and is guided into a pressurized first annular space (15a) which is acted upon by a second ram (6), which is guided in a further tubular chamber (11), it is intended to provide a solution by which the wear of the rammer or ram that acts on the tube wall is compensated over as long a time as possible and effective sealing with respect to the surroundings is ensured. This is achieved by the second ram (6) being provided with at least one first guide (6a), acting upon the inner wall of the tubular chamber (11), in the region of the end of said second ram that makes contact with the first ram (7) and being provided with a second guide (6b), fitted with a sealing element, in the region of the end (6c) of said second ram that protrudes from the tubular chamber (11), and by the second ram (6) being enclosed between the two guides (6a, 6b) by a gas-tightly fixed compensator (20).

Description

Klopfer für staubbehaftete Rohrwände  Knocker for dusty pipe walls
Die Erfindung richtet sich auf eine Vorrichtung zum Einbringen von Klopfbzw. Pulsbewegungen in Rohrwände innerhalb eines Druckbehälters, wobei ein den Klopfimpuls an die Rohrwand abgebender erster Stößel die Druckbehälterwand, geführt in einen druckbeaufschlagten ersten Ringraum, durchsetzt, der von einem zweiten, in einer weiteren rohrförmigen Kammer geführten Stößel beaufschlagt ist. The invention is directed to a device for introducing Klopfbzw. Pulse movements in the tube walls within a pressure vessel, wherein the knock pulse to the pipe wall donating first plunger pressure vessel wall, led into a pressurized first annulus, passes, which is acted upon by a second, guided in a further tubular chamber plunger.
Es gibt eine Reihe von Anwendungen derartiger Klopfer, insbesondere bei Wärmetauschern in chemischen Prozessen, die innerhalb oder außerhalb von Druckbehältern eingesetzt werden, z. B. bei Rohrwänden der Druckbehälter für die Kohlevergasung, bei denen man bestrebt ist, die Wirkungsweise auch der Wärmeübertragung in die Rohrwände auf einem hohen Niveau aufrechtzuerhalten. Derartige Einrichtungen zum Einbringen von Schlagimpulsen in die Rohrwände, damit der Staub abrieseln kann, sind beispielsweise in der WO 2010/0637552 AI oder der WO 2010/063755 AI beschrieben. There are a number of applications of such knockers, especially in heat exchangers in chemical processes that are used inside or outside of pressure vessels, eg. As in pipe walls of the pressure vessel for coal gasification, in which one endeavors to maintain the mode of action and the heat transfer into the pipe walls at a high level. Such devices for introducing impact pulses into the tube walls, so that the dust can trickle, are described for example in WO 2010/0637552 AI or WO 2010/063755 AI.
Einen pneumatischen Klopfer zeigt die DE 196 52 707 C2, eine Klopf- oder Schlagvorrichtung an Heizkesseln ist auch in der DE 10 2010 007 197 AI offenbart, um nur einige Beispiele zu nennen. A pneumatic knocker shows the DE 196 52 707 C2, a knocking or impact device to boilers is also disclosed in DE 10 2010 007 197 AI, to name just a few examples.
Da beispielsweise in den Druckbehältern, die bei der Kohlevergasung eingesetzt werden, vergleichsweise hohe Drücke auftreten und u.a. dadurch die zur Pulsübertragung eingesetzten Stößel bzw. Rammbären einem Verschleiß unterworfen sind, muss nicht nur für die besondere Abdichtung des Innenraumes des Druckbehälters gegenüber der Umgebung gesorgt werden, sondern auch eine Möglichkeit geschaffen werden, die durch den Verschleiß ent- stehende Verkürzung der Rammbären bzw. Stößel zu kompensieren. Hierzu ist beispielsweise bei der Lösung nach der WO 2010/063755 AI eine auf den Stößel wirkende Druckfeder in einer Kammer vorgesehen, wobei diese Kammer durch Gaszufuhr von außen einen etwas höheren Druck aufweist als der Innendruck des Kohlevergasers. Since comparatively high pressures occur, for example, in the pressure vessels used in coal gasification and, inter alia, the plungers or battering rams used for pulse transmission are subject to wear, it is not only necessary to ensure the special sealing of the interior of the pressure vessel from the environment, but also a possibility to be created by the wear and tear Compensate for the shortening of the ram or pestle. For this purpose, for example, in the solution according to WO 2010/063755 AI a force acting on the plunger spring is provided in a chamber, said chamber by gas supply from the outside a slightly higher pressure than the internal pressure of the coal gasifier.
In der Praxis hat sich gezeigt, dass es durchaus zu Brüchen derartiger Federn kommen kann. Auch ist nicht mit absoluter Sicherheit das Austreten von mit Staub behaftetem Synthesegas gewährleistet. In practice, it has been shown that it may well break to such feathers. Also, the release of dust-laden syngas is not guaranteed with absolute certainty.
Eine etwas andere Lösung mit lediglich einer Druckkammer, zeigt die oben schon genannte WO 2010/063752 AI, bei der der Schlagstößel an der Stirnseite einer von Druckgas beaufschlagten Kammer befestigt ist. A somewhat different solution with only one pressure chamber, shows the already mentioned above WO 2010/063752 AI, in which the percussion ram is attached to the end face of a pressurized gas chamber.
Aufgabe der Erfindung ist die Schaffung einer Lösung, mit der sowohl über eine möglichst lange Zeit der Verschleiß des Rammbärens bzw. Stößels, der die Rohrwand beaufschlagt, kompensiert wird als auch eine wirkungsvolle Abdichtung gegenüber der Umgebung gewährleistet ist. The object of the invention is to provide a solution with which is compensated over both the longest possible time of wear of Rammbärens or plunger, which acts on the pipe wall, and an effective seal against the environment is guaranteed.
Mit einer Vorrichtung der eingangs bezeichneten Art wird diese Aufgabe gemäß der Erfindung dadurch gelöst, dass der zweite Stößel mit wenigstens einer die Innenwand der rohrförmigen Kammer beaufschlagenden ersten Führung im Bereich seines den ersten Stößel berührenden Endes sowie im Bereich seines aus der rohrförmigen Kammer ragenden Endes mit einer zweiten, mit einem Dichtelement ausgestatteten Führung versehen ist und dass der zweite Stößel zwischen den beiden Führungen von einem gasdicht fixierten Kompensator umschlossen ist. With a device of the type described, this object is achieved according to the invention in that the second plunger with at least one of the inner wall of the tubular chamber acting first guide in the region of the first plunger-contacting end and in the region of its protruding from the tubular chamber end a second, provided with a sealing element guide is provided and that the second plunger between the two guides is enclosed by a gas-tight fixed compensator.
Durch den Kompensator oder Balg ist gewährleistet, dass kein Gas aus dem Druckgefäß in die Umgebung entweichen kann, ohne dass die Beweglichkeit des Stößels, der die Klopf- bzw. Pulsbewegungen auf die Rohrwand überträgt, beeinflusst wird . Eine mögliche Ausgestaltung der Erfindung besteht darin, dass der zweite Stößel mit Kompensator in der rohrförmigen Kammer von einer Druckfeder umgeben ist, wobei aber eine bevorzugte Ausgestaltung der Erfindung darin besteht, dass die Führung des zweiten Stößels mit Dichtungen zur Bildung eines gegen die Umgebung abgedichteten Ringraumes versehen ist, wobei der nach außen weisende Stößel von einer statischen Dichtung umgeben ist. The compensator or bellows ensures that no gas can escape from the pressure vessel into the environment, without the mobility of the plunger, which transfers the knock or pulse movements to the pipe wall, is influenced. A possible embodiment of the invention is that the second plunger with compensator in the tubular chamber is surrounded by a compression spring, but a preferred embodiment of the invention is that the leadership of the second plunger with seals to form a sealed against the environment annular space is provided, wherein the outwardly facing plunger is surrounded by a static seal.
Die letztgenannte Ausgestaltung hat den Vorteil, dass beispielsweise eine statische Dichtung andere physikalische und chemische Eigenschaften aufweisen kann als etwa eine dynamische Dichtung, die z.B. bei ihrer Bewegung einem Abrieb unterworfen ist. The latter embodiment has the advantage that, for example, a static seal may have different physical and chemical properties than, for example, a dynamic seal, e.g. is subject to abrasion during its movement.
Eine Ausgestaltung besteht nach der Erfindung darin, dass die Dichtungen von O-Ring-Dichtungen gebildet sind, die in den den zweiten Stößel umgebenden Ringscheiben positioniert sind, wobei wenigstens eine Ringscheibe mit einem in den Ringraum weisenden Ringflansch zur Fixierung des einen Endes des Kompensators versehen ist. An embodiment according to the invention is that the seals of O-ring seals are formed, which are positioned in the annular discs surrounding the second plunger, at least one annular disc provided with an annular flange pointing into the annular space for fixing the one end of the compensator is.
Eine abgewandelte Ausführungsform der Dichtung besteht darin, dass die statische Dichtung zwischen einer den zweiten Stößel umgebenden Ringscheibe und der Stirnseite des Ringraumes positioniert ist, wobei die Ringscheibe mit einem in den Ringraum weisenden Ringflansch zur Fixierung des einen Endes des Kompensators versehen ist. A modified embodiment of the seal is that the static seal is positioned between an annular disc surrounding the second plunger and the end face of the annular space, wherein the annular disc is provided with an annular flange pointing into the annular space for fixing the one end of the compensator.
Um zu verhindern, dass staubbeladenes Gas in die Umgebung bzw. in den Bereich von Dichtungen des zweiten Ringraumes gerät, ist nach der Erfindung vorgesehen, dass in dem Ringraum ein den ersten Stößel umgebendes, den Staubdurchtritt verhinderndes Filterelement vorgesehen ist. In order to prevent dust-laden gas in the environment or in the range of seals of the second annulus, it is provided according to the invention that in the annulus a surrounding the first plunger, the dust passage preventing filter element is provided.
Eine Ausgestaltung eines solchen den Durchtritt von Staub verhindernden Elementes besteht darin, dass das Filterelement von einem zwischen zwei Ringscheiben positionierten Sintermetallrohrstück gebildet ist, wobei die Ringscheiben den ersten Stößel eng umschließen, während das Sintermetallrohrstück den ersten Stößel auf Abstand umgibt. An embodiment of such a passage of dust-preventing element is that the filter element of one between two Ring discs positioned sintered metal tube piece is formed, wherein the annular discs closely surround the first plunger, while the sintered metal tube piece surrounds the first plunger at a distance.
Eine Ausgestaltung des Filterelementes besteht darin, dass die dem Ringraum zugewandte Ringscheibe an ihrer am ersten Stößel anliegenden Randkante und die zweite Ringscheibe an ihrer die Innenwand des Ringraumes berührenden Randkante mit Ausnehmungen versehen ist, wobei auch vorgesehen sein kann, dass die jeweils andere Randkante der Ringscheiben eine O-Ring-Dichtung aufweist. Damit ist die Möglichkeit einer Strömung durch das Sintermetall-Rohrstück gegeben. An embodiment of the filter element is that the ring disk facing the annular space is provided at its edge adjacent to the first ram edge and the second annular disc on its inner wall of the annular space contacting edge with recesses, wherein it can also be provided that the respective other peripheral edge of the annular discs has an O-ring seal. This gives the possibility of a flow through the sintered metal pipe section.
Zweckmäßig ist es, die Längenänderung des Rammbärens bzw. dieses Stößels optisch kenntlich zu machen. Hierzu sieht die Erfindung vor, dass das aus der Kammer ragende Ende des zweiten Stößels mit einer Längenveränderungen, insbesondere den Abrieb des ersten Stößels, kenntlich machenden elektronischen oder mechanischen Einrichtung ausgerüstet ist. It is expedient to make the change in length of Rammbärens or this ram visually recognizable. For this purpose, the invention provides that the protruding from the chamber end of the second plunger is equipped with a change in length, in particular the abrasion of the first plunger, recognizable making electronic or mechanical device.
Eine robuste, einfache und wenig störanfällige Gestaltung eines solches Elementes kann darin bestehen, dass das aus der Kammer ragende Stößelende mit einem Zeiger ausgerüstet ist, dem eine ortsfeste Skala zugeordnet ist. A robust, simple and less susceptible to interference design of such an element may be that the protruding from the chamber plunger end is equipped with a pointer to which a fixed scale is assigned.
Die Erfindung ist nachstehend anhand der Zeichnung beispielsweise näher erläutert. Diese zeigt in The invention is explained in more detail below with reference to the drawing, for example. This shows in
Fig . 1 eine vereinfachte Schnittdarstellung durch eine Gesamtansicht der erfindungsgemäßen Vorrichtung, in den Fig. 1 is a simplified sectional view through an overall view of the device according to the invention, in the
Fig . 2 bis 4 in vergrößerter Schnittdarstellung einen Teilbereich von drei Fig. 2 to 4 in an enlarged sectional view a portion of three
Ausführungsbeispielen sowie in Fig . 5 eine vergrößerte Darstellung eines den Stößel bzw. Rammbär umgebenden Filterelementes. Embodiments and in Fig. FIG. 5 is an enlarged view of a filter element surrounding the ram or ram. FIG.
Die in Fig. 1 in einer vereinfachten Schnittdarstellung dargestellte Vorrichtung, allgemein mit 1 bezeichnet, dient zum Aufbringen von Klopfimpulsen auf eine teilweise angedeutete Rohrwand 2 in einem Druckbehälter 3, wie er beispielsweise in Kohlevergasungsanlagen eingesetzt wird. The device shown in Fig. 1 in a simplified sectional view, generally designated 1, is used for applying knock pulses on a partially indicated pipe wall 2 in a pressure vessel 3, as used for example in coal gasification plants.
Die Vorrichtung 1 wird im Wesentlichen von einem die Klopfimpulse auslösenden Klopfimpulsgenerator 4 oder Actuator gebildet, dessen z.B. pneumatisch betätigter Stoßkolben 5 impulsweise über eine Kolbenstange 6, im Weiteren zweiter Stößel 6 genannt, an einen Rammbär, im Weiteren erster Stößel 7 genannt, überträgt, der die Druckbehälterwand 3 durchdringt und über z.B. eine Prallplatte 18, die an der Rohrwand befestigt ist, den Impuls in die Rohrwand einbringt. Da der Innenraum des Druckbehälters 3 sowohl eine hohe Temperatur von ca. 500°C aufweist als auch einen hohen Druck von z.B. 50 bar, ist der Durchtritt des ersten Stößels 7 im Wesentlichen gasdicht in den Druckbehälter geführt, wozu ein Mantelrohr 8 mit einem Rohrstutzen 9, der am Druckbehälter 3 verschweißt ist, verschraubt ist. The device 1 is essentially constituted by a knock pulse generator 4 or actuator triggering the knocking impulses, whose e.g. pneumatically actuated thrust piston 5 in pulses via a piston rod 6, hereinafter referred to as second plunger 6, to a ram, hereinafter called the first plunger 7 transmits, which penetrates the pressure vessel wall 3 and via e.g. a baffle plate 18 attached to the tube wall which introduces momentum into the tube wall. Since the interior of the pressure vessel 3 both has a high temperature of about 500 ° C and a high pressure of e.g. 50 bar, the passage of the first plunger 7 is guided substantially gas-tight in the pressure vessel, including a jacket tube 8 with a pipe socket 9, which is welded to the pressure vessel 3, is screwed.
An der der Rohrwand zugewandten Seite ist der erste Stößel 7 in einer Führung 10 geführt und ragt mit seinem der Rohrwand abgewandten Ende bereits außerhalb des Druckbehälters in die Stirnseite einer mit 11 bezeichneten rohrförmigen Kammer, in der auch eine Kolbenstange, des Weiteren als zweiter Stößel 6 bezeichnet, geführt ist. On the side facing the tube wall, the first plunger 7 is guided in a guide 10 and protrudes with its end facing away from the tube wall outside of the pressure vessel in the end face of a designated 11 tubular chamber, in which also a piston rod, further as the second plunger. 6 designated, is guided.
Innerhalb des Mantelrohres 8 ist ein allgemein mit 12 bezeichnetes Filterelement vorgesehen, das dafür sorgen soll, dass kein Feinstaub und damit auch das den Feinstoff transportierende Gas nach außen tritt. Zusätzlich ist dort eine Druckgasleitung 13 im Blockflansch 14 des Mantelrohres 8 vorgesehen, um im Ringraum 15 zwischen dem Mantelrohr 8 und dem ersten Stößel 7 einen Druck aufzubauen, der geringfügig höher ist als der Innendruck im Druckbehälter 3. Der Blockflansch 14 dient zur Befestigung des MantelrohresWithin the jacket tube 8, a generally designated 12 filter element is provided which is intended to ensure that no fine dust and thus also the fines transporting gas escapes to the outside. In addition, there is a compressed gas line 13 in the block flange 14 of the jacket tube 8 is provided in the annular space 15 between the jacket tube 8 and the first plunger 7 to build up a pressure which is slightly higher than the internal pressure in the pressure vessel 3. The block flange 14 serves for fastening the jacket tube
8 am Rohrstutzen 9 und damit am Druckbehälter 3. Die die Kolbenstange bzw. den zweiten Stößel 6 umgebende rohrförmige Kammer 11 ist im dargestellten Beispiel der Fig. 1 mit zwei Befestigungsflanschen 16 und 17 ausgerüstet, wobei der Befestigungsflansch 16 zur Befestigung der rohrförmigen Kammer 11 am Blockflansch 14 dient, während der Befestigungsflansch 17 zur Befestigung des Klopfimpulsgenerators 4 an der rohrförmigen Kammer 11 dient. 8 on the pipe socket 9 and thus the pressure vessel 3. The surrounding the piston rod and the second plunger 6 tubular chamber 11 is equipped in the example shown in FIG. 1 with two mounting flanges 16 and 17, wherein the mounting flange 16 for fixing the tubular chamber 11 on Block flange 14 is used, while the mounting flange 17 serves to attach the knock pulse generator 4 to the tubular chamber 11.
Der in der rohrförmigen Kammer 11 geführte zweite Stößel 6 weist an seinem dem ersten Stößel 7 zugewandten Ende eine Führung 6a auf, die im Beispiel der Fig. 1 einstückig mit dem zweiten Stößel 6 als Scheibe ausgebildet ist und an ihrem Ende eine O-Ring-Dichtung aufweist, wobei andere Gestaltungen sich aus den folgenden Figuren ergeben. Die Führung 6a kann auch von einer separaten Ringscheibe gebildet sein. The guided in the tubular chamber 11 second plunger 6 has at its the first plunger 7 end facing a guide 6a, which is integrally formed in the example of FIG. 1 with the second plunger 6 as a disc and at its end an O-ring Seal, wherein other designs are shown in the following figures. The guide 6a can also be formed by a separate annular disc.
Der Stößel 6 ist auch in einer Führung 6b gehalten, wobei sein Ende 6c aus der rohrförmigen Kammer 11 herausragt. Diese zweite Führung 6b ist Teil eines als Ringscheibe ausgebildeten Flanschelementes 21, wobei im Beispiel der Fig . 1 zwischen dem Flanschelement 12 und dem Befestigungsflansch 17 eine statische Dichtung 19 vorgesehen ist. The plunger 6 is also held in a guide 6 b, with its end 6 c protruding from the tubular chamber 11. This second guide 6b is part of a flange formed as an annular ring element 21, wherein in the example of FIG. 1 between the flange 12 and the mounting flange 17, a static seal 19 is provided.
Aus Fig . 1 ist auch erkennbar, dass zwischen den beiden Führungen 6a und 6b ein Kompensator 20 fixiert ist, derart, dass der mit 22 bezeichnete Ringraum zwischen der rohrförmigen Kammer 11 und dem zweiten Stößel durch druckdichte Fixierung des Kompensators an den Führungen 6a und 6b gasdicht gegenüber der Umgebung abgeschlossen ist, im Beispiel der Fig. 1 in Verbindung mit der Dichtung 19. From Fig. 1 it can also be seen that between the two guides 6a and 6b, a compensator 20 is fixed, such that the annulus designated 22 between the tubular chamber 11 and the second plunger by pressure-tight fixation of the compensator to the guides 6a and 6b gas-tight relative to the Environment is completed, in the example of FIG. 1 in conjunction with the seal 19th
Beim Beispiel der Fig. 1 ist der Ringraum 22 über eine Gaszufuhrleitung 23 mit einem Druckgas beaufschlagbar, derart, dass der Druck im Ringraum 22 auf die Führung 6a wirkt und somit, da sie frei beweglich und über eine Dichtung 24 in der rohrförmigen Kammer 11 abgedichtet ist, den zweiten Stößel 6 auf den ersten Stößel 7 drückt, derart, dass beim Verschleiß des Stößels 7 eine feste Anlage des ersten Stößels 6 am zweiten Stößel 7 immer gewährleistet ist. In the example of Fig. 1, the annular space 22 is acted upon via a gas supply line 23 with a pressurized gas, such that the pressure in the annular space 22nd acts on the guide 6a and thus, since it is freely movable and sealed by a seal 24 in the tubular chamber 11, the second plunger 6 presses on the first plunger 7, such that during wear of the plunger 7 a fixed contact of the first plunger 6 on the second plunger 7 is always guaranteed.
Eine vergrößerte Darstellung des Bereiches der zweiten Führung 6b des zweiten Stößels 6 in der rohrförmigen Kammer 11, insbesondere der Bereich, wo der Stößel 6 aus der Kammer nach außen tritt, ist in Fig. 2 vergrößert dargestellt. Erkennbar ist dort auch ein Teil eines Gestänges, z.B. aus mehreren Gewindestangen 25a, angedeutet, mit denen der Klopfimpulsgenerator 4 am Befestigungsflansch 17 fixiert ist. Dargestellt ist dabei eine Möglichkeit, an einer der Gewindestangen 25 eine Einrichtung 26 anzuordnen, die es möglich macht, optisch das Eindringen der Kolbenstange 6 in die rohrförmige Kammer 11 bei Verschleiß des ersten Stößels 7 kenntlich zu machen, z. B. mittels eines Zeigers in Verbindung mit einer Skala 27. Eine solche Einrichtung 26 kann auch elektronisch ausgebildet sein oder in anderer Weise die Lageveränderung des zweiten Stößels 6 kenntlich machen. An enlarged view of the area of the second guide 6b of the second plunger 6 in the tubular chamber 11, in particular the area where the plunger 6 emerges from the chamber to the outside, is shown enlarged in FIG. There can also be seen part of a linkage, e.g. from a plurality of threaded rods 25a, indicated with which the knock pulse generator 4 is fixed to the mounting flange 17. Shown here is a way to arrange on one of the threaded rods 25, a device 26, which makes it possible to make visually the penetration of the piston rod 6 in the tubular chamber 11 in wear of the first plunger 7, z. B. by means of a pointer in conjunction with a scale 27. Such a device 26 may also be formed electronically or make the change in position of the second plunger 6 in any other way.
In Fig . 3 ist ein abgewandeltes Ausführungsbeispiel dargestellt. Hier ist die zweite Führung 6b ein Teil einer Ringscheibe mit außen liegender O-Ring- Dichtung 24a, die als statische Dichtung ausgelegt ist, wobei die zweite Führung 6b von einem Fixierflansch 28 gehalten ist, der mit der rohrförmigen Kammer 11 verschraubt ist. In Fig. 3, a modified embodiment is shown. Here, the second guide 6b is a part of an annular disc with an outer O-ring seal 24a designed as a static seal, the second guide 6b being held by a fixing flange 28 which is screwed to the tubular chamber 11.
In Fig . 4 ist in Abwandlung der Ausführungsform nach Fig . 1 dargestellt, dass der Kompensator 20 von einer Druckfeder 29 umgeben ist, die im Inneren des Ringraumes 22 positioniert ist und sich an der ersten Führung 6a und der zweiten Führung 6b druckdicht abstützt. Da die erste Führung 6a mit dem zweiten Stößel 6 verschiebbar gelagert ist, sorgt die Druckfeder 29 für eine dauerhafte Anlage des zweiten Stößels 6 am ersten Stößel 7, wie dies auch aus Fig. 4 erkennbar ist. In Fig . 5 ist vergrößert u.a. das Filterelement 12 dargestellt, das im Wesentlichen aus zwei Ringscheiben 30 und 31 gebildet ist, wobei zwischen den beiden Ringscheiben 30 und 31 auf Abstand zum ersten Stößel 7 und zum Mantelrohr 8 ein Sintermetallrohrstück 32 positioniert ist. Wie gestrichelt dargestellt, weist die Ringscheibe 30 eine außen am Mantelrohr 8 anliegende Ringdichtung 33 auf, wobei Kanäle oder Nuten 34 in der am ersten Stößel 7 anliegenden Stirnseite der Ringscheibe 30 vorgesehen sind. In Fig. 4 is a modification of the embodiment of FIG. 1 that the compensator 20 is surrounded by a compression spring 29, which is positioned in the interior of the annular space 22 and pressure-tightly supported on the first guide 6a and the second guide 6b. Since the first guide 6a is slidably mounted with the second plunger 6, the compression spring 29 ensures a permanent abutment of the second plunger 6 on the first plunger 7, as can be seen also from FIG. In Fig. 5 is enlarged, inter alia, the filter element 12 is shown, which is essentially formed of two annular discs 30 and 31, wherein between the two annular discs 30 and 31 at a distance from the first plunger 7 and the casing tube 8, a sintered metal tube piece 32 is positioned. As shown in dashed lines, the annular disk 30 has an outer ring sleeve 33 abutting the jacket tube 8, wherein channels or grooves 34 are provided in the voltage applied to the first plunger 7 end face of the annular disc 30.
Die Ringscheibe 31 weist dagegen eine Ringdichtung, z. B. einen O-Ring 35, auf, und zwar an der am ersten Stößel anliegenden Stirnseite, während die dem Rohrstutzen 8 zugewandte Stirnseite mit Durchgangsnuten 36 ausgerüstet ist. Damit ist gewährleistet, dass über die Leitung 13 in den Ringraum 15 eingebrachtes Gas mit einem gegenüber dem Druck im Druckbehälter 3 leicht erhöhtem Druck die Möglichkeit hat, durch die Nuten 36 das Sintermetallrohrstück 32 und dann über die Nuten 34 in den Ringraum 15a zwischen Mantelrohr 8 und erstem Stößel 7 gelangen kann und damit einen evtl . The annular disc 31, however, has a ring seal, z. As an O-ring 35, on, and in particular on the first ram adjacent end face, while the pipe socket 8 facing end side is equipped with through grooves 36. This ensures that via the line 13 into the annulus 15 introduced gas with a relation to the pressure in the pressure vessel 3 slightly increased pressure has the opportunity through the grooves 36, the sintered metal tube piece 32 and then via the grooves 34 in the annular space 15a between the jacket tube and first plunger 7 can get and thus a possibly.
Gasstrom in umgekehrter Richtung aus dem Druckbehälter 3 zu verhindern in der Lage ist. Bei einer umgekehrt gelagerten Strömung werden Staubpartikel an der Außenoberfläche des Sintermetallrohrstückes abgelagert, so dass ggf. austretendes Gas staubpartikelfrei ist. Gas flow in the opposite direction from the pressure vessel 3 is able to prevent. In a reverse flow stored dust particles are deposited on the outer surface of the sintered metal pipe section, so that any escaping gas is free of dust particles.
Natürlich ist das beschriebene Ausführungsbeispiel der Erfindung noch in vielfacher Hinsicht abzuändern, ohne den Grundgedanken zu verlassen. So kann die Gestaltung einer evtl. vorgesehenen Druckfeder 29 anders als dargestellt ausgeführt werden, die Gestaltung des Kompensators 20 kann auch von der dargestellten Variante abweichen u. dgl. mehr. Bezugszeichenliste : Of course, the described embodiment of the invention is still to be modified in many ways, without departing from the spirit. Thus, the design of a possibly provided compression spring 29 can be performed differently than shown, the design of the compensator 20 may also differ from the illustrated variant u. like. More. List of reference numbers:
1 Vorrichtung 1 device
2 Rohrwand  2 pipe wall
3 Druckbehälter  3 pressure vessels
4 Klopfimpulsgenerator  4 knock pulse generator
5 Stoßkolben  5 butts
6 Kolbenstange, zweiter Stößel 6 piston rod, second plunger
6a erste Führung 6a first tour
6b zweite Führung  6b second guide
6c Ende  6c end
7 erster Stößel, Rammbär 7 first pestle, ram
8 Mantelrohr 8 casing pipe
9 Rohrstutzen  9 pipe socket
10 Führung  10 leadership
11 rohrförmige Kammer  11 tubular chamber
12 Filterelement  12 filter element
13 Druckgasleitung  13 compressed gas line
14 Blockflansch  14 block flange
15, 15a, 22 Ringraum  15, 15a, 22 annulus
16,17 Befestigungsflansch  16,17 mounting flange
18 Prall platte  18 baffle plate
19,24 Dichtung  19.24 seal
20 Kompensator  20 compensator
21 Flanschelement + Ringscheibe 21 flange element + washer
23 Gaszuführleitung 23 gas supply line
25 Gewindestangen  25 threaded rods
26 Einrichtung  26 establishment
27 Skala  27 scale
28 Flansch  28 flange
29 Druckfeder Ringscheibe 29 compression spring washer
Sintermetallrohrstück O-Ring-Dichtung Nuten Sintered metal pipe section O-ring seal grooves

Claims

Patentansprüche : Claims:
1. Vorrichtung (1) zum Einbringen von Klopf- bzw. Pulsbewegungen in Rohrwände innerhalb eines Druckbehälters (3), wobei ein den Klopfimpuls an die Rohrwand (2) abgebender erster Stößel (7) die Druckbehälterwand, geführt in einen druckbeaufschlagten ersten Ringraum (15a), durchsetzt, der von einem zweiten, in einer weiteren rohrförmigen Kammer (11) geführten Stößel (6) beaufschlagt ist, 1. Device (1) for introducing knock or pulse movements in tube walls within a pressure vessel (3), wherein a knock pulse to the tube wall (2) donating first plunger (7) the pressure vessel wall, guided in a pressurized first annular space (15 a ), penetrated by a second, in a further tubular chamber (11) guided ram (6) is acted upon,
dadurch gekennzeichnet, characterized,
dass der zweite Stößel (6) mit wenigstens einer die Innenwand der rohrförmigen Kammer (11) beaufschlagenden ersten Führung (6a) im Bereich seines den ersten Stößel (7) berührenden Endes sowie im Bereich seines aus der rohrförmigen Kammer (11) ragenden Endes (6c) mit einer zweiten, mit einem Dichtelement ausgestatteten Führung (6b) versehen ist und dass der zweite Stößel (6) zwischen den beiden Führungen (6a, 6b) von einem gasdicht fixierten Kompensator (20) umschlossen ist. in that the second plunger (6) has at least one first guide (6a) which acts on the inner wall of the tubular chamber (11) in the region of its end contacting the first plunger (7) and in the region of its end (6c) protruding from the tubular chamber (11) ) is provided with a second, equipped with a sealing element guide (6b) and that the second plunger (6) between the two guides (6a, 6b) by a gas-tight fixed compensator (20) is enclosed.
2. Vorrichtung nach Anspruch 1, 2. Apparatus according to claim 1,
dadurch gekennzeichnet, characterized,
dass der zweite Stößel (6) mit Kompensator (20) in der rohrförmigen Kammer (11) von einer Druckfeder (29) umgeben ist. in that the second plunger (6) with compensator (20) in the tubular chamber (11) is surrounded by a compression spring (29).
3. Vorrichtung nach Anspruch 1, 3. Apparatus according to claim 1,
dadurch gekennzeichnet, characterized,
dass die Führung (6b) des zweiten Stößels (6) mit Dichtungen zur Bildung eines gegen die Umgebung abgedichteten Ringraumes versehen sind, wobei das nach außen weisende Stößelende (6c) von einer statischen Dichtung (19,24a) umgeben ist. in that the guide (6b) of the second plunger (6) is provided with seals for forming an annular space sealed to the environment, the outwardly facing plunger end (6c) being surrounded by a static seal (19, 24a).
4. Vorrichtung nach Anspruch 3, 4. Apparatus according to claim 3,
dadurch gekennzeichnet, dass die Dichtungen (24,24a) von O-Ring-Dichtungen (33,35) gebildet sind, die in den den zweiten Stößel (6) umgebenden Ringscheiben positioniert sind, wobei wenigstens eine Ringscheibe (21) mit einem in den Ringraum (22) weisenden Ringflansch versehen ist zur Fixierung des einen Endes des Kompensators (20). characterized, in that the seals (24, 24a) are formed by O-ring seals (33, 35) which are positioned in the annular disks surrounding the second plunger (6), at least one annular disk (21) having an annular space (22 ) facing annular flange is provided for fixing the one end of the compensator (20).
5. Vorrichtung nach Anspruch 3, 5. Apparatus according to claim 3,
dadurch gekennzeichnet, characterized,
dass die statische Dichtung zwischen einer den zweiten Stößel umgebenden Ringscheibe (21) und der Stirnseite des Ringraumes (22) positioniert ist, wobei die Ringscheibe mit einem in den Ringraum weisenden Ringflansch versehen ist zur Fixierung des einen Endes des Kompensators (20). in that the static seal is positioned between an annular disc (21) surrounding the second plunger and the end face of the annular space (22), the annular disc being provided with an annular flange pointing into the annular space for fixing one end of the compensator (20).
6. Vorrichtung nach einem der vorangehenden Ansprüche, 6. Device according to one of the preceding claims,
dadurch gekennzeichnet, characterized,
dass in den ersten Ringraum (15,15a) ein den ersten Stößel (7) umgebendes, den Staubdurchtritt verhinderndes Filterelement (12) vorgesehen ist. in that a filter element (12) which surrounds the first plunger (7) and prevents the passage of dust is provided in the first annular space (15, 15a).
7. Vorrichtung nach Anspruch 6, 7. Apparatus according to claim 6,
dadurch gekennzeichnet, characterized,
dass das Filterelement (12) von einem zwischen zwei Ringscheiben (30,31) positionierten Sintermetallrohrstück (32) gebildet ist, wobei die Ringscheiben (30,31) den ersten Stößel (7) eng umschließen, während das Sintermetallrohrstück (32) den ersten Stößel (7) auf Abstand umgibt. in that the filter element (12) is formed by a sintered metal tube piece (32) positioned between two annular discs (30, 31), the annular discs (30, 31) closely surrounding the first plunger (7), while the sintered metal tube piece (32) enclosing the first plunger (7) surrounds at a distance.
8. Vorrichtung nach Anspruch 7, 8. Apparatus according to claim 7,
dadurch gekennzeichnet, characterized,
dass die dem Ringraum (15a) zugewandte Ringscheibe (30) an ihrer am ersten Stößel anliegenden Randkante und die zweite Ringscheibe (31) an ihrer die Innenwand des Ringraumes berührenden Randkante mit Ausnehmungen bzw. Nuten (34,36) versehen ist. in that the annular disc (30) facing the annular space (15a) is provided with recesses or grooves (34, 36) on its peripheral edge adjacent to the first plunger and the second annular disc (31) on its peripheral edge contacting the inner wall of the annular space.
9. Vorrichtung nach Anspruch 8, 9. Apparatus according to claim 8,
dadurch gekennzeichnet, characterized,
dass die jeweils andere Randkante der Ringscheiben (30,31) eine O-Ring- Dichtung (33,35) aufweist. the respective other peripheral edge of the annular discs (30, 31) has an O-ring seal (33, 35).
10. Vorrichtung nach einem der vorangehenden Ansprüche, 10. Device according to one of the preceding claims,
dadurch gekennzeichnet, characterized,
dass das aus der Kammer ragende Ende (6c) des zweiten Stößels (6) mit einer Längenveränderungen, insbesondere den Abrieb des ersten Stößels, kenntlich machenden elektronischen oder mechanischen Einrichtung (26) ausgerüstet ist. in that the end (6c) of the second plunger (6) projecting out of the chamber is equipped with a change in length, in particular the abrasion of the first plunger, of a recognizable electronic or mechanical device (26).
11. Vorrichtung nach Anspruch 10, 11. The device according to claim 10,
dadurch gekennzeichnet, characterized,
dass das aus der Kammer ragende Stößelende (6c) mit einem Zeiger ausgerüstet ist, dem eine ortsfeste Skala (27) zugeordnet ist. in that the plunger end (6c) protruding from the chamber is equipped with a pointer to which a stationary scale (27) is assigned.
EP13713097.7A 2012-03-21 2013-03-12 Device for generating knocking or pulsating movements in tube walls Not-in-force EP2828601B1 (en)

Applications Claiming Priority (2)

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DE102012005804A DE102012005804A1 (en) 2012-03-21 2012-03-21 Knocker for dusty pipe walls
PCT/EP2013/054937 WO2013139639A1 (en) 2012-03-21 2013-03-12 Beater for dust-affected tube walls

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EP2828601A1 true EP2828601A1 (en) 2015-01-28
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DE (1) DE102012005804A1 (en)
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ES2960569T3 (en) * 2019-08-29 2024-03-05 Sumitomo SHI FW Energia Oy Spring hammer for tapping a surface
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EP2828601B1 (en) 2016-09-21
IN2014DN08434A (en) 2015-05-08

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