EP2548662A1 - Vorrichtung und Verfahren zum Online-Reinigen von Installationen - Google Patents

Vorrichtung und Verfahren zum Online-Reinigen von Installationen Download PDF

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Publication number
EP2548662A1
EP2548662A1 EP11175095A EP11175095A EP2548662A1 EP 2548662 A1 EP2548662 A1 EP 2548662A1 EP 11175095 A EP11175095 A EP 11175095A EP 11175095 A EP11175095 A EP 11175095A EP 2548662 A1 EP2548662 A1 EP 2548662A1
Authority
EP
European Patent Office
Prior art keywords
arm
installation
tube
explosive
holder
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.)
Withdrawn
Application number
EP11175095A
Other languages
English (en)
French (fr)
Inventor
Freddy Tom Wanschers
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.)
Online Cleaning BV
Original Assignee
Online Cleaning BV
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 Online Cleaning BV filed Critical Online Cleaning BV
Priority to EP11175095A priority Critical patent/EP2548662A1/de
Priority to PCT/EP2012/064330 priority patent/WO2013014097A1/en
Publication of EP2548662A1 publication Critical patent/EP2548662A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B08B7/0007—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by explosions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
    • F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
    • F23J3/023—Cleaning furnace tubes; Cleaning flues or chimneys cleaning the fireside of watertubes in boilers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
    • F27D25/006—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag using explosives
    • 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
    • F28G15/02—Supports for cleaning appliances, e.g. frames

Definitions

  • the invention relates to a device for cleaning installations, in particular incinerators, such as (brown)coal and biomass fired power stations, and also e.g. scrubbers and silos, comprising a first arm containing or carrying at least one explosive, preferably a solid explosive such as a detonation cord, and connected to a second arm for manipulating the first arm inside an installation.
  • incinerators such as (brown)coal and biomass fired power stations
  • scrubbers and silos comprising a first arm containing or carrying at least one explosive, preferably a solid explosive such as a detonation cord, and connected to a second arm for manipulating the first arm inside an installation.
  • the invention further relates to a method of cleaning installations, preferably online.
  • EP 1 544 567 relates to an explosive cleaning system which uses a first fixed tube (denoted as "Rohr-1" in Figure 4 of EP 1 544 567 ) with a water inlet (Wassereinlass) and an air inlet (Lufteinlass). A mixture of water and air flows through the tube, and passes through a hinge (Gelenk) to a second movable tube (Rohr-2). A wire (Zund ein) passes through the first tube and the link to an igniter (Zunder) and an explosive cord (Sprengschnur) in the second tube.
  • the device shown in EP 1 544 567 is effective, but less suitable for cleaning larger scale installations, such as power plants generating in excess of 150 megawatt and having an internal width in excess of 10 meters.
  • the device according to the present invention is characterized in that the second arm comprises two or more parallel elongated elements interconnected at a plurality of longitudinal positions.
  • the device according to the present invention enables efficient and optionally online cleaning of large volume installations, e.g. having an internal width in excess of 10 meters, e.g. 20 meters.
  • one element extends within the other, e.g. a smaller diameter rod or tube extends coaxially within a larger diameter tube.
  • the second arm comprises at least three parallel and spatially separated elongated elements, preferably arranged on a circle (seen in cross-section). This arrangement was found to provide a good balance between (small) effective diameter, enabling it to fit through small openings in the installation to be cleaned, (low) weight and bending stiffness.
  • the second arm is formed as a so-called truss comprising a plurality, e.g. three parallel elongated elements arranged on a circle (seen in cross-section) and interconnected at regular intervals by further elements, e.g. crosses or inclined rods, extending primarily in longitudinal (axial) direction and interconnecting two parallel elongated elements and by elements extending primarily in lateral (radial) direction and connecting all parallel elongated elements.
  • the second arm has an effective diameter in a range from 8 to 25 centimeters, preferably 10 to 18 centimeters.
  • the effective diameter is defined as the diameter of the imaginary (outer) circle obtained by a full rotation of the second arm about its central longitudinal axis.
  • the second arm has a length in excess of 5 meters, preferably in a range from 6 to 15 meters, more preferably in a range from 7 to 12 meters.
  • the second arm comprises a plurality of releasably interconnected segments.
  • the second arm can be taken apart, facilitating transport, storage, and repair. It is preferred that the segments have a length in a range from 1 to 4 meters, e.g. two different lengths of 1,5 and 3 meters.
  • At least one of the elongated elements of the second arm is a tube.
  • the first arm comprises a tube and that the distal end of the at least one tube in the second arm is fluidly connected to the tube in the first arm and, e.g. at its proximal end, is fluidly connected or connectable to a supply for coolant.
  • the tube is destroyed during the explosion and/or that the tube has a length in a range from 1 to 6 meters and/or a diameter in a range from 10 to 50 millimeters, preferably 15 to 35 millimeters.
  • the aspect ratio (L/D) of the tube is in excess of 20, thus generating, upon detonation, a linear explosion.
  • the device comprises a holder to be positioned outside the installation and in turn comprising bearings slidingly and/or rotatably supporting the second arm.
  • This holder provides and effective means for, on the one hand, accurately manoeuvring the second (and thus the first) arm inside the installation and, on the other hand, bearing the bending moment resulting from the weight of the parts extending into the installation, such as the first arm, part of the second arm and coolant present in the first and second arms.
  • the holder comprises one or more motors, suitable transmissions (gears, toothed racks), and a controller for sliding and rotating the second arm relative to the holder, i.e. for manoeuvring the first arm inside the installation.
  • the holder is fixable or fixed to structural elements of the installation.
  • the first arm is connected to the second arm by means of a hinge and is preferably provided with a motor to rotate the first arm with the hinge. If the motor is an hydraulic motor, the hydraulic fluid is preferably supplied and returned via tubes in the truss.
  • the invention further relates to a method of cleaning installations, preferably online, preferably by means of a device according to the invention as described above, comprising the steps of introducing the first arm containing or carrying an explosive into the installation, manoeuvring - by means of the second arm and, if present, the hinge - the first arm to a desired position, and detonating the explosive thus removing deposits from the entrails of the installation and destroying the first arm.
  • the second arm is mounted in a holder and the second arm is slid and/or rotated inside and relative to the holder to manoeuvre the first arm inside the installation.
  • the method comprises, after detonating the explosive, the steps of withdrawing the second arm from the installation, mounting another first arm to the second arm and introducing the other first arm into the installation.
  • the first arm is inserted between entrails of the installation, in particular between the tubes of a heat exchanger, and is pushed or pulled against the entrails, e.g. a row of tubes, by means of the second arm and maintained in this position up to and including detonation.
  • the energy of the blast is efficiently transfer to deposits on the entrails.
  • the length of the first arm e.g. a tube containing a detonation cord, exceeds the width of the entrails to be cleaned, such as a bundle of tubes.
  • EP 1 275 925 relates to a process and device for local destruction of compact material, e.g. clinker coating, masonry remains, etc., in hot thermal systems such as heat exchangers, industrial ovens, furnaces, and metallurgical melting vessels, which uses an explosive (numeral 5 in the Figures) arranged on the front end of a lance (3) in a cooling container (1) through which coolant (4) flows.
  • hot thermal systems such as heat exchangers, industrial ovens, furnaces, and metallurgical melting vessels
  • the coolant flows into the cooling container designed as a double tube having a cooling head (10) and a supply head (11) over the lance into the supply head, through the inner tube/inner cooling casing (27) to the front end of the cooling head, past the explosive container (25), between the inner cooling casing and the cooling head housing (23) back to the supply head, and from this out of the hot thermal system.
  • EP 1 067 349 relates to a device, system and method permitting online explosives-based cleaning and deslagging of a fuel burning facility (31) such as a boiler, furnace, incinerator, or scrubber.
  • a coolant such as ordinary water, is delivered to the explosives (101) to prevent them from detonating due to the heat of the online facility.similar device.
  • US 5,494,004 relates to an online pulsed detonation/deflagration soot blower comprising a pivotal housing member which has an end pivotally coupled to an end of a base housing member for movement between a retracted or folded position and an extended position.
  • the pivotal member When the pivotal member is in its folded position, the two housing members may be moved through an opening formed through the wall of a boiler, etc. for cleaning the interior surface of the wall with the pulsed pressure waves.
  • the two housing members may be rotated about an axis of the base housing member and the pivotal housing member pivoted to different extended positions from its folded position.
  • WO98/16329 discloses a system for cleaning a nuclear power plant steam generator, the system comprising a deployment subsystem (numeral 50, Fig. 2 ), which is used to deploy a spray head vertically within the steam generator to the elevation of the tube support plate to be accessed.
  • Figure 1 shows a device 1 for the online cleaning of installations 2, in particular incinerators, such as (brown)coal and biomass fired power stations, by means of explosives.
  • the device 1 comprises a first arm 3, in this example a metal, e.g. aluminium, or plastic tube, containing an explosive, e.g., a detonation cord and a detonator (not shown).
  • This tube (hereafter also referred to as "explosive tube”) has a length in a range from 1 to 6 meters, in this example 3 meters, and is connected via a hinge 4 to the distal end of a second arm 5 for manipulating the first arm 3 inside the installation 2.
  • the second arm 5 is formed as a truss and comprises three parallel straight tubes 6 arranged on a circle (seen in cross-section) and interconnected at regular intervals i) by welded elements 7 (see Figure 3 ), e.g. crosses or inclined rods, extending primarily in longitudinal (axial) direction and interconnecting two tubes and ii) by welded elements 8 ( Figure 3 ) extending primarily in lateral (radial) direction and interconnecting all three tubes 6.
  • the second arm 5 is slidingly and rotatably supported inside a holder 9, which, to this end, comprises a plurality, e.g. two rotary guides or bearings 10 ( Figure 4 ), such as ball or slide bearings, spaced apart in axial direction by at least 50 centimeters and a plurality of linear bearings or guides 11 ( Figure 4 ), e.g. wheels having concave running surfaces to accommodate the tubes 6.
  • the second arm 5 has an effective diameter of 115 millimeters.
  • the second arm has a length of nine meters and comprises four (3 + 3 + 1,5 + 1,5 m) truss segments 12 releasably interconnected e.g. by means of flanges 13 and bolds.
  • each of the tubes 6 is connected to a fluid supply (not shown). Wires (not shown) for operating the detonator extend through one of the tubes, typically through the tube that also comprises the hinge 4.
  • the holder 9 is mounted on a mobile frame 14 by means of an adjustable head, which comprises at least a vertical pivot 15 for swivelling the truss 5 and a horizontal pivot 16 for tilting the truss 5.
  • the frame 14 is positioned on a platform 17 next to the installation 2 and, in addition, is clamped, at least in this example, to structural beams 18 of the installation to provide extra stability and reduce the load on the platform.
  • the holder can be mounted on a heavy base, e.g. a base filled with water.
  • the truss is withdrawn from the incinerator through the inspection opening, and another explosive tube is attached, e.g. screwed onto, the hinge and the above process is repeated, typically with the explosive tube being detonated at a different location, e.g. shifted over a suitable distance relative to the former location.
  • the device is moved to the opposite side to clean the remainder.
  • the device according to the present invention enables efficient and optionally online cleaning of large volume installations, e.g. having an internal width in excess of 10 meters, e.g. 20 meters.
  • the second arm can be provided with one or more inspections camera's.
  • the holder can comprises means, such as brushes and water jets, to clean the second arm when in is withdrawn from the installation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)
EP11175095A 2011-07-22 2011-07-22 Vorrichtung und Verfahren zum Online-Reinigen von Installationen Withdrawn EP2548662A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP11175095A EP2548662A1 (de) 2011-07-22 2011-07-22 Vorrichtung und Verfahren zum Online-Reinigen von Installationen
PCT/EP2012/064330 WO2013014097A1 (en) 2011-07-22 2012-07-20 Device for and method of cleaning online installations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11175095A EP2548662A1 (de) 2011-07-22 2011-07-22 Vorrichtung und Verfahren zum Online-Reinigen von Installationen

Publications (1)

Publication Number Publication Date
EP2548662A1 true EP2548662A1 (de) 2013-01-23

Family

ID=44478693

Family Applications (1)

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EP11175095A Withdrawn EP2548662A1 (de) 2011-07-22 2011-07-22 Vorrichtung und Verfahren zum Online-Reinigen von Installationen

Country Status (2)

Country Link
EP (1) EP2548662A1 (de)
WO (1) WO2013014097A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103528389A (zh) * 2013-10-14 2014-01-22 苏州汇科机电设备有限公司 电子窑炉自动化生产线用的匣钵自动清扫装置
WO2019225565A1 (ja) * 2018-05-21 2019-11-28 川崎重工業株式会社 衝撃波式スートブロワ支持構造

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110102541A (zh) * 2019-06-10 2019-08-09 福建省中瑞装备制造科技有限公司 一种水泥库高效清洁系统
EP4067739A1 (de) 2021-03-29 2022-10-05 Conservator Tyche Beheer B.V. Verfahren und vorrichtung zur reinigung und/oder inspektion eines ofens oder kessels

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3888362A (en) * 1973-05-31 1975-06-10 Nasa Cooperative multiaxis sensor for teleoperation of article manipulating apparatus
US3897263A (en) * 1973-11-02 1975-07-29 Oliver Thurston Davis Apparatus for washing and disinfecting trailer or van interiors
US4106516A (en) * 1974-10-23 1978-08-15 Wiegand Paul C Internal wash cleaner for truck trailers and bodies
USRE29987E (en) * 1974-12-23 1979-05-08 Safeway Stores, Incorporated Apparatus and method for washing interiors of truck and trailer bodies
US5494004A (en) 1994-09-23 1996-02-27 Lockheed Corporation On line pulsed detonation/deflagration soot blower
WO1998016329A2 (en) 1996-10-11 1998-04-23 Foster-Miller, Inc. Steam generator cleaning, inspection, and repair system
EP1067349A2 (de) 1997-01-17 2001-01-10 Francis Zilka Vorrichtung, System und Verfahren zum On-line Explosiv-Entschlacken
WO2002084193A1 (de) * 2001-04-12 2002-10-24 Bang & Clean Gmbh Verfahren zum reinigen von verbrennungseinrichtungen
EP1275925A1 (de) 2001-07-09 2003-01-15 Hans Eichner GmbH & Co.KG Verfahren und Vorrichtung zur lokalen Zerstörung kompakter Materialien in heissen thermischen Anlagen
EP1544567A2 (de) 2003-12-19 2005-06-22 Inno Industrial Engineering Ltd. Verfahren und Vorrichtung zur Reinigung von Verschmutzungen in Wärmetauschern, Abhitzekesseln und Brennkammern
DE102004007007B3 (de) * 2004-02-12 2005-09-08 Doris Dosse Reinigungsgerät
EP1987895A1 (de) * 2007-05-04 2008-11-05 United Technologies Corporation Detonative Reinigungsvorrichtung
US20100212608A1 (en) * 2009-02-26 2010-08-26 Brown Clinton A Retractable articulating robotic sootblower

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US29987A (en) 1860-09-11 Washing-machine

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3888362A (en) * 1973-05-31 1975-06-10 Nasa Cooperative multiaxis sensor for teleoperation of article manipulating apparatus
US3897263A (en) * 1973-11-02 1975-07-29 Oliver Thurston Davis Apparatus for washing and disinfecting trailer or van interiors
US4106516A (en) * 1974-10-23 1978-08-15 Wiegand Paul C Internal wash cleaner for truck trailers and bodies
USRE29987E (en) * 1974-12-23 1979-05-08 Safeway Stores, Incorporated Apparatus and method for washing interiors of truck and trailer bodies
US5494004A (en) 1994-09-23 1996-02-27 Lockheed Corporation On line pulsed detonation/deflagration soot blower
WO1998016329A2 (en) 1996-10-11 1998-04-23 Foster-Miller, Inc. Steam generator cleaning, inspection, and repair system
EP1067349A2 (de) 1997-01-17 2001-01-10 Francis Zilka Vorrichtung, System und Verfahren zum On-line Explosiv-Entschlacken
WO2002084193A1 (de) * 2001-04-12 2002-10-24 Bang & Clean Gmbh Verfahren zum reinigen von verbrennungseinrichtungen
EP1275925A1 (de) 2001-07-09 2003-01-15 Hans Eichner GmbH & Co.KG Verfahren und Vorrichtung zur lokalen Zerstörung kompakter Materialien in heissen thermischen Anlagen
EP1544567A2 (de) 2003-12-19 2005-06-22 Inno Industrial Engineering Ltd. Verfahren und Vorrichtung zur Reinigung von Verschmutzungen in Wärmetauschern, Abhitzekesseln und Brennkammern
DE102004007007B3 (de) * 2004-02-12 2005-09-08 Doris Dosse Reinigungsgerät
EP1987895A1 (de) * 2007-05-04 2008-11-05 United Technologies Corporation Detonative Reinigungsvorrichtung
US20100212608A1 (en) * 2009-02-26 2010-08-26 Brown Clinton A Retractable articulating robotic sootblower

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Handbuch Sprengtechnik", 1975, VEB DEUTSCHER VERLAG, pages: 344 - 351

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103528389A (zh) * 2013-10-14 2014-01-22 苏州汇科机电设备有限公司 电子窑炉自动化生产线用的匣钵自动清扫装置
WO2019225565A1 (ja) * 2018-05-21 2019-11-28 川崎重工業株式会社 衝撃波式スートブロワ支持構造
JP2019203607A (ja) * 2018-05-21 2019-11-28 川崎重工業株式会社 衝撃波式スートブロワ支持構造
RU2753558C1 (ru) * 2018-05-21 2021-08-17 Кавасаки Дзюкогио Кабусики Кайся Опорный элемент ударно-импульсного сажесдувателя

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