EP0307961A1 - Appareil de nettoyage pour échangeurs de chaleur à faisceaux de tubes, en particulier pour la zone de la plaque tubulaire et de la plaque d'espacement - Google Patents

Appareil de nettoyage pour échangeurs de chaleur à faisceaux de tubes, en particulier pour la zone de la plaque tubulaire et de la plaque d'espacement Download PDF

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Publication number
EP0307961A1
EP0307961A1 EP88115337A EP88115337A EP0307961A1 EP 0307961 A1 EP0307961 A1 EP 0307961A1 EP 88115337 A EP88115337 A EP 88115337A EP 88115337 A EP88115337 A EP 88115337A EP 0307961 A1 EP0307961 A1 EP 0307961A1
Authority
EP
European Patent Office
Prior art keywords
lance
tube
cleaning device
cleaning
nozzles
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
EP88115337A
Other languages
German (de)
English (en)
Other versions
EP0307961B1 (fr
Inventor
Johannes Dipl.-Ing.(Fh) Stoss
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0307961A1 publication Critical patent/EP0307961A1/fr
Application granted granted Critical
Publication of EP0307961B1 publication Critical patent/EP0307961B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/48—Devices or arrangements for removing water, minerals or sludge from boilers ; Arrangement of cleaning apparatus in boilers; Combinations thereof with boilers
    • F22B37/483—Devices or arrangements for removing water, minerals or sludge from boilers ; Arrangement of cleaning apparatus in boilers; Combinations thereof with boilers specially adapted for nuclear steam generators

Definitions

  • the invention relates to a cleaning device which is introduced through an opening into a heat exchanger and with which in particular the tube plate and spacer plate area can be cleaned. It relates in particular to a cleaning device for heat exchangers with tube bundles, in particular for the tube sheet and spacer plate area, in which a lance provided with nozzles can be inserted into the tube bundle through an opening of the heat exchanger, can be continued step by step and can be moved by a pivoting device, and in which a flange with a hollow cylinder is provided for guiding the lance and for attachment to the opening.
  • a cleaning device is known from US Pat. No. 4,273,076, which is attached to an opening of the heat exchanger by means of a mounting plate in which a lance is guided.
  • the lance has a rack-shaped configuration along its upper side, on which a drive acts in such a way that the lance is gradually introduced into the tube passage of the heat exchanger.
  • the lance has a head with nozzles through which a cleaning agent is sprayed onto the tube sheet in pulsating jets while maintaining a fixed angle.
  • the device is suitable for insertion into the pipe lane running in the X direction. The cleaning jet can thus only be directed into the pipe gaps which are offset by 90 ° while maintaining a fixed angle of attack.
  • a remote-controlled tube lane manipulator For cleaning a heat exchanger tube plate, it is known from DE-A 32 02 248 to use a remote-controlled tube lane manipulator.
  • the manipulator can be inserted into the Rohrgasse through a service opening.
  • the arranged on his spray head Neten nozzles can be positioned in their respective spraying position in that the vehicle pipe is clamped to the pipes of the two opposite pipe lane sides in accordance with the division with externally retractable clamping feet.
  • the direction of the spray nozzle mouth and its distance from the clamping plane of the clamping feet to the pipe pitch are matched so that the spray jets get into the spaces. Due to its dimensions, the manipulator can only be used for the pipe lane oriented in the X direction.
  • flexible tubes arranged in a band are introduced into the heat exchanger and are provided with spray nozzles of fixed alignment, so that the spray nozzles direct the jets obliquely and approximately symmetrically to the direction of a row of tubes onto the tube plate.
  • the device has a complex feed mechanism, which must be installed outside the heat exchanger and requires a large footprint.
  • the invention has for its object to provide a cleaning device for a heat exchanger with tube bundles, in particular for the tube sheet and spacer plate area, which remotely and largely automatically allows a uniform cleaning over the entire width of the tube sheet.
  • the pivoting device comprises a motor which is fastened to the hollow cylinder and a pendulum gear which connects a driver guided in longitudinal grooves of the lance by impellers to the axis of rotation of the motor in such a way that the Lance is pivotable about its longitudinal axis.
  • the cleaning device according to the invention is characterized by a compact, space-saving construction and a simple swivel device. It enables thorough cleaning of the floor. Automatic swiveling by means of the motor means that operation by personnel is not necessary. This also ensures that the floor is evenly treated with cleaning agents.
  • the cleaning device is preferably designed such that a connection head, attached to one end of the lance, for the supply of cleaning agent is guided by a guide and feed device arranged parallel to the lance on the hollow cylinder.
  • a connection head attached to one end of the lance, for the supply of cleaning agent is guided by a guide and feed device arranged parallel to the lance on the hollow cylinder.
  • the lance or a nozzle head of the lance is smaller in the largest diameter than the smallest pipe gap width.
  • the lance can thus also be inserted in the much narrower pipe gaps in the Y direction, so that beam alignment in the X direction is possible on the ground.
  • the lance has two tubes, each with a nozzle head, which can be pivoted relative to one another.
  • the double arrangement allows the cleaning agent flow to be doubled, which enables particularly intensive cleaning of the tube sheet.
  • This lance 1 shows a cleaning device according to the invention, the lance 1 of which is designed according to a first embodiment.
  • This lance 1 is inserted through an opening 3 (e.g. a hand hole) of a heat exchanger into a pipe lane or into a pipe gap which is formed by heat exchanger pipes 30.
  • the relatively wide pipe alley 21 extends in the X direction; relatively narrow pipe gaps run parallel to it.
  • the heat exchanger tubes 30 are perpendicular to the paper plane, that is to say in the Z direction and parallel thereto.
  • the illustration shows a lance 1 which is introduced centrally in the Y direction and is made relatively thin and also has a relatively thin nozzle head.
  • a total of four cleaning jets 27 are shown parallel to the XZ plane, two on each side of the longitudinal axis of the lance.
  • the cleaning device is screwed to the heat exchanger with a flange 5.
  • the bottom of this is again designated 15.
  • the lance 1 is formed here with the aid of a single tube which is mounted in a hollow cylinder 6, which in turn is connected to the flange 5.
  • the lance 1 can also comprise more than one tube.
  • a nozzle head 13 is arranged at the end of the lance 1 pointing into the pipe alley. This is provided on the flat radiation side shown with four nozzles 2 aligned with the heat exchanger base 15. These four nozzles 2 are arranged in two rows. Accordingly, a further, oblique to the first radiation side second side can be provided, on which nozzles are also arranged.
  • connection head 14 At the opposite end of the lance 1 there is a pivotably arranged connection head 14, via which the detergent supply takes place.
  • the connection head 14 is guided on a guide and feed device 12 by means of a holder 16.
  • the lance 1 is gradually advanced by means of a spindle 17.
  • the spindle 17 is driven by a feed motor 19.
  • the lance 1 can gradually step as far into the Heat exchangers are inserted until the holder 16 comes to a stop on a limit switch 18 which is adjustably mounted on a guide rail 20.
  • This limit switch 18 ends the automatic motor feed.
  • the maximum insertion depth of the lance 1 is determined by the setting or positioning of the limit switch 18 on the guide rail 20.
  • an automatic swivel device 4 is arranged below the guide and feed device 12 on the other side of the hollow cylinder 6. It essentially consists of the following units: a motor 7, a pendulum gear 8 connected to its drive axle and a driver 10 guided in the longitudinal grooves 9 of the lance 1 by impellers 11.
  • the lance 1 is movably guided in the driver 10 in the longitudinal direction.
  • the impellers 11 engaging in the longitudinal grooves 9 of the lance 1
  • the lance 1 is pivoted about its longitudinal axis. In this way, the cleaning jets 27 of the nozzle head 13 are pivoted back and forth over the heat exchanger base 15 while the lance 1 is being moved step by step into the pipe lane in question.
  • nozzle head 13 there should be noted that more or fewer than four nozzles 2 can be arranged on each radiation side of the nozzle head 13.
  • FIG. 3 shows a cross section of a nozzle head 13 inserted into a pipe or inspection lane 21 with a total of four nozzles 2.
  • the nozzle head 13 is wider than that of FIG 2; it corresponds to that of FIG. 1.
  • the two flat radiation sides on which the two nozzles are located form an angle with one another, for example between 45 ° and 80 °.
  • the cleaning jets 27 can act on the heat exchanger base 15 with cleaning agent in its entire width measured in the Y direction at a nozzle swivel angle of only ⁇ 45 °, which is marked by a double arrow. Zeroing the nozzle pivot angle is characterized by the solid arrows that mark the cleaning jets 27.
  • a lance 1 is used, which consists of two tubes, each with a small nozzle head 13 attached and with e.g. there are two nozzles per nozzle head 13.
  • This lance 1 which can also be referred to as a double lance, is introduced into a tube gap 22 which is much narrower than the tube alley 21 of FIG. 3 and extends in the Y direction.
  • Each of the two nozzle heads 13 has a nozzle swivel angle of 45 ° in total.
  • the nozzle heads 13 are pivoted in opposite directions, which is illustrated by the solid arrows (starting position) and the dashed arrows (reverse position) for the cleaning jets 27.
  • nozzle arrangement in the individual nozzle heads 13 Due to the nozzle arrangement in the individual nozzle heads 13, a uniformly intensive treatment of the heat exchanger base 15 is possible over its entire width. This is favored by the jets 27 of the two nozzle heads 13 pivoting in opposite directions.
  • the nozzle heads 13 are each smaller in their largest diameter than the pipe gap 22.
  • At least one nozzle 2 is arranged on the one nozzle head 13 in such a way that its cleaning jet 27, in one swivel end position, targets approximately the same direction as the cleaning jet 27 at least one nozzle 2 of the other nozzle head 13, specifically when this other nozzle head 13 has reached its end position at the same time.
  • the cleaning jets 27 on one side of the lance 1 swivel towards one another until they have reached approximately the same direction, and then they return to their starting position.
  • FIG. 5 shows a section through a lance 1 comprising two tubes 23a, 23b and nozzle heads (not shown) attached at the end shown. At each nozzle head, one or more nozzles 2 are again arranged on one or two radiation sides.
  • the tubes 23a, 23b each have a toothing 24 on their circumference.
  • the two tubes 23a, 23b are connected to one another in the manner of a transmission in a torque-locking connection.
  • the lower or first tube 23b additionally has longitudinal grooves 9 in its surface, in which the impellers 11 of the driver 10 are guided.
  • the driver 10 is reciprocated at its other end by a pin 25 located on a disc 26, the disc 26 being driven by a motor 7, whereby the lower or first tube 23b is pivoted.
  • each tube 23a, 23b and thus each nozzle head 13 is, for example, ⁇ 22.5 °. So you get by with particularly small swivel angles.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Cleaning In General (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP88115337A 1987-09-18 1988-09-19 Appareil de nettoyage pour échangeurs de chaleur à faisceaux de tubes, en particulier pour la zone de la plaque tubulaire et de la plaque d'espacement Expired - Lifetime EP0307961B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8712637U 1987-09-18
DE8712637U DE8712637U1 (de) 1987-09-18 1987-09-18 Reinigungsgerät für Wärmetauscher mit Rohrbündeln, insbesondere für den Rohrboden- und Abstandshalterplattenbreich

Publications (2)

Publication Number Publication Date
EP0307961A1 true EP0307961A1 (fr) 1989-03-22
EP0307961B1 EP0307961B1 (fr) 1990-12-27

Family

ID=6812216

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88115337A Expired - Lifetime EP0307961B1 (fr) 1987-09-18 1988-09-19 Appareil de nettoyage pour échangeurs de chaleur à faisceaux de tubes, en particulier pour la zone de la plaque tubulaire et de la plaque d'espacement

Country Status (4)

Country Link
US (1) US4844021A (fr)
EP (1) EP0307961B1 (fr)
DE (2) DE8712637U1 (fr)
YU (1) YU107688A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0780627A1 (fr) * 1995-12-22 1997-06-25 Framatome Procédé et dispositif de nettoyage d'une plaque tubulaire d'un échangeur de chaleur depuis l'intérieur du faisceau de l'échangeur de chaleur
GB2468650A (en) * 2009-03-16 2010-09-22 Tube Tech Int Ltd Lance for cleaning the shell side of a heat exchanger core
GB2468651A (en) * 2009-03-16 2010-09-22 Tube Tech Int Ltd Lance for cleaning the shell side of a heat exchanger core
WO2010106491A1 (fr) 2009-03-16 2010-09-23 Tube Tech International Limited Lance pour nettoyer le côté coque d'un faisceau d'échangeur de chaleur

Families Citing this family (21)

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Publication number Priority date Publication date Assignee Title
US5069172A (en) * 1990-09-26 1991-12-03 Westinghouse Electric Corp. Nuclear steam generator sludge lance method and apparatus
US5305713A (en) * 1992-07-29 1994-04-26 Vadakin, Inc. Angular rotation rotary cleaning device
US5323797A (en) * 1992-08-07 1994-06-28 Rankin George J Rotating hose apparatus
NL9202174A (nl) * 1992-12-16 1994-07-18 Peinemann Equipment Bv Lansmachine met buigzame lans.
US5353996A (en) * 1993-02-18 1994-10-11 Boise Cascade Corporation Sootblower frame and drive assembly
US6672257B1 (en) * 1994-05-06 2004-01-06 Foster-Miller, Inc. Upper bundle steam generator cleaning system and method
US5564371A (en) * 1994-05-06 1996-10-15 Foster Miller, Inc. Upper bundle steam generator cleaning system and method
US5615734A (en) * 1994-11-16 1997-04-01 Westinghouse Electric Corporation Sludge lance inspection and verification system
CA2182509C (fr) * 1994-12-07 2001-01-30 Foster-Miller, Inc. Systeme de mise en oeuvre pour dispositif de nettoyage/controle du faisceau tubulaire superieur d'un generateur de vapeur
DE29605023U1 (de) * 1996-01-16 1996-09-05 Köhler, Haiko, 04430 Böhlitz-Ehrenberg Sicherheitsschlauchführung für Hoch- und Höchstdruckwasserstrahltechnik
US20040007254A1 (en) * 2002-07-12 2004-01-15 Laust Pedersen Cleaning tool
US8176883B2 (en) * 2009-02-26 2012-05-15 Diamond Power International, Inc. Retractable articulating robotic sootblower
EP2496905B1 (fr) * 2009-11-03 2021-01-06 Westinghouse Electric Company LLC Dispositif de lance miniature pour l'élimination de boues
WO2011126579A1 (fr) * 2010-04-10 2011-10-13 Dixon Christopher J Technique d'entretien d'échangeur de chaleur
US20150027499A1 (en) * 2013-07-24 2015-01-29 Babcock & Wilcox Nuclear Energy, Inc. Multi-angle sludge lance
CA2955049C (fr) 2014-07-24 2022-04-19 Stoneage, Inc. Appareil a cadre de positionneur de lance de nettoyage a tube flexible
US10024613B2 (en) 2014-07-24 2018-07-17 Stoneage, Inc. Flexible tube cleaning lance positioner frame apparatus
US9630801B2 (en) 2014-07-24 2017-04-25 Stoneage, Inc. Flexible tube cleaning lance drive apparatus
CN107175228A (zh) * 2016-03-10 2017-09-19 核动力运行研究所 蒸汽发生器二次侧第一支撑板下表面水力冲洗导向装置
US10272480B2 (en) 2016-12-09 2019-04-30 Stoneage, Inc. Apparatus for remotely propelling a flexible lance into and out of a piping system
US11713932B2 (en) 2020-08-18 2023-08-01 Stoneage, Inc. Flexible tube cleaning lance positioner frame apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2551182A1 (fr) * 1983-08-26 1985-03-01 Innus Ind Nuclear Service Installation pour le nettoyage d'un generateur de vapeur au moyen d'une lance a haute pression
BE905193A (nl) * 1986-07-29 1986-11-17 Smetjet N V Inrichting voor het met een waterstraal reinigen van een stoomgenerator.
US4715324A (en) * 1985-11-26 1987-12-29 Apex Technologies, Inc. Nuclear steam generator sludge lancing method and apparatus

Family Cites Families (9)

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US3377026A (en) * 1966-01-24 1968-04-09 Diamond Power Speciality Retractable cleaning mechanism for boilers and other heat exchangers
US4079701A (en) * 1976-05-17 1978-03-21 Westinghouse Electric Corporation Steam generator sludge removal system
US4273076A (en) * 1978-12-28 1981-06-16 Westinghouse Electric Corp. Steam generator sludge lancing apparatus
YU40938B (en) * 1978-12-28 1986-08-31 Westinghouse Electric Corp Device for vemoving mud sediments from a steam generator
US4276856A (en) * 1978-12-28 1981-07-07 Westinghouse Electric Corp. Steam generator sludge lancing method
FR2514108B1 (fr) * 1981-10-06 1986-06-13 Framatome Sa Procede et dispositif d'elimination des boues sur la plaque tubulaire des generateurs de vapeur
DE3202248A1 (de) * 1982-01-25 1983-08-04 Kraftwerk Union AG, 4330 Mülheim Rohrgassen-manipulator, spritzkopf und zugehoeriges spritzverfahren zum hochdruck-abschlaemmen von waermetauschern
US4492187A (en) * 1983-12-05 1985-01-08 The Babcock & Wilcox Company Sootblower apparatus
US4803959A (en) * 1988-03-24 1989-02-14 The Babcock & Wilcox Company Indexing sootblower

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2551182A1 (fr) * 1983-08-26 1985-03-01 Innus Ind Nuclear Service Installation pour le nettoyage d'un generateur de vapeur au moyen d'une lance a haute pression
US4715324A (en) * 1985-11-26 1987-12-29 Apex Technologies, Inc. Nuclear steam generator sludge lancing method and apparatus
BE905193A (nl) * 1986-07-29 1986-11-17 Smetjet N V Inrichting voor het met een waterstraal reinigen van een stoomgenerator.

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0780627A1 (fr) * 1995-12-22 1997-06-25 Framatome Procédé et dispositif de nettoyage d'une plaque tubulaire d'un échangeur de chaleur depuis l'intérieur du faisceau de l'échangeur de chaleur
FR2742858A1 (fr) * 1995-12-22 1997-06-27 Framatome Sa Procede et dispositif de nettoyage d'une plaque tubulaire d'un echangeur de chaleur depuis l'interieur du faisceau de l'echangeur de chaleur
US5782255A (en) * 1995-12-22 1998-07-21 Framatome Method and device for cleaning a tube plate of a heat exchanger from inside the bundle of the heat exchanger
GB2468650A (en) * 2009-03-16 2010-09-22 Tube Tech Int Ltd Lance for cleaning the shell side of a heat exchanger core
GB2468651A (en) * 2009-03-16 2010-09-22 Tube Tech Int Ltd Lance for cleaning the shell side of a heat exchanger core
WO2010106491A1 (fr) 2009-03-16 2010-09-23 Tube Tech International Limited Lance pour nettoyer le côté coque d'un faisceau d'échangeur de chaleur
GB2468651B (en) * 2009-03-16 2013-03-13 Tube Tech Int Ltd Lance for cleaning the shell side of a heat exchanger core
GB2468650B (en) * 2009-03-16 2013-03-13 Tube Tech Int Ltd Lance for cleaning the shell side of a heat exchanger core

Also Published As

Publication number Publication date
DE3861447D1 (de) 1991-02-07
US4844021A (en) 1989-07-04
YU107688A (en) 1991-02-28
EP0307961B1 (fr) 1990-12-27
DE8712637U1 (de) 1989-01-12

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