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EP0251213A1 - Dispositif de nettoyage des surfaces intérieures ou extérieures de tubes d'échangeurs de chaleur, posés sur pied ou suspendus - Google Patents

Dispositif de nettoyage des surfaces intérieures ou extérieures de tubes d'échangeurs de chaleur, posés sur pied ou suspendus Download PDF

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Publication number
EP0251213A1
EP0251213A1 EP87109148A EP87109148A EP0251213A1 EP 0251213 A1 EP0251213 A1 EP 0251213A1 EP 87109148 A EP87109148 A EP 87109148A EP 87109148 A EP87109148 A EP 87109148A EP 0251213 A1 EP0251213 A1 EP 0251213A1
Authority
EP
European Patent Office
Prior art keywords
pipes
tubes
pipe
shoulder
exchanger
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
EP87109148A
Other languages
German (de)
English (en)
Other versions
EP0251213B1 (fr
Inventor
Frohmut Dipl.-Ing. Vollhardt
Hans Dipl.-Ing. Krämer
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.)
MAN Gutehoffnungshutte GmbH
Original Assignee
MAN Gutehoffnungshutte 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
Priority claimed from DE19863621850 external-priority patent/DE3621850A1/de
Application filed by MAN Gutehoffnungshutte GmbH filed Critical MAN Gutehoffnungshutte GmbH
Publication of EP0251213A1 publication Critical patent/EP0251213A1/fr
Application granted granted Critical
Publication of EP0251213B1 publication Critical patent/EP0251213B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/023—Cleaning the external surfaces
    • 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
    • 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
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • 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
    • 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

Definitions

  • the invention relates to a method for cleaning the inner or outer wall of standing or hanging pipes of heat exchangers according to the preamble of the main claim. In the same way, it relates to a device for carrying out the method.
  • Cleaning devices are those with brushes, knockers and balls, which are swung against the pipes, which is also possible during the operation of the exchanger, while manual cleaning of the pipes requires considerable physical strain on the operators.
  • mechanical cleaning agents are used, the amount of gas itself changes during the cleaning process, so that the downstream gas cleaning and neutralization devices are impaired in their mode of operation.
  • the invention has for its object to avoid manual work and to make it possible to carry out the cleaning process during the operation of the heat exchanger without the downstream cleaning and neutralization devices being disturbed in their operation.
  • cleaning should be uniform over the length of the pipes, with which uniform thermal stress on the pipes should be achievable over their length.
  • the process should be applicable to both the outer and the inner wall of pipes without a fundamental change.
  • the invention provides the method features of the characterizing part of the main claim.
  • the subordinate claims serve to improve and further develop the features of the main claim.
  • the features directed towards the device reflect the advantageous structure of a device for carrying out the method.
  • the inventive method and its device are based on the basic idea of causing the particles adhering to the pipes or in the pipes to jump off by the fact that the pipes, which initially have a kinematic energy in the longitudinal direction, i.e. have received a longitudinal movement, are stopped abruptly. This type of cleaning is particularly advantageous when the lower end of the tubes strikes a stationary stop.
  • the lifting device the starting position of the row of pipes determines how the parts of the lifting device and the collecting device are arranged outside the heat exchanger and can therefore be more easily monitored and, if necessary, repaired there.
  • the control means for the lifting devices are also provided outside of the heat exchanger and thus can UB also with the entire H and collecting device be fitted to existing heat exchangers of the pre-characterizing Art.
  • Fig. 1 illustrates a a M üllverbrennungsstrom downstream waste heat boiler, as is known from DE-PS 23 41 444.
  • This waste heat boiler has a bottom wall 1 and the two Front and rear walls 2, 3 as well as the ceiling 4 and the side walls 5.
  • In the interior 6 of the boiler tubes 7, 8 are arranged hanging, which in the present case are designed as fin tubes, the longitudinal edges of the fin tubes being connected to one another in such a way that adjacent tubes 7, 8 each form a fin tube wall.
  • the tubes 8 are offset in the longitudinal direction with respect to the tubes 7, so that there is an intermediate space 7a, 8a at the upper end of the tubes 8 and their fins and at the lower end of the tubes 7 and their fins. This can be limited by suitable walls 9, 10 or otherwise.
  • the flue gases therefore flow in the direction of arrows A and take a meandering course, the flue gases flowing through the alleys 11 formed between the fin tube walls.
  • the flue gas leaves the boiler at 12.
  • the fin tubes instead of the fin tubes, other types of tubes with a different arrangement and different flow of the adhering particles with accompanying gases can also be provided, e.g. those that are arranged as individual tubes hanging in the interior 6 of the boiler. It is essential that the pipes 7, 8 in question are freely movable in their entire length in the direction of the double arrows S, regardless of the distribution and collecting lines to be described in more detail below, in order to achieve the purpose of the invention. (A movable section of the pipes due to thermal expansion with compensating agent is not meant here.)
  • the pipes 7 open into a lower distribution line 13, which has a downpipe, not shown, with a boiler drum is connected, and in an upper manifold 14, which is also connected to the boiler via a riser.
  • the tubes 8 are connected in the same way to a lower distributor line 15 and an upper manifold 16 and are connected to the boiler drum via a downpipe and a riser.
  • the upper, parallel, horizontal manifolds 14, 16 form with the tubes 7, 8 hanging on them and the lower, also parallel, horizontal distributor lines 13, 15 a unit which is longitudinally movable in the longitudinal direction of the tube (see arrow S in FIG. 1) .
  • the two ends 14a, 16a of each manifold 14, 16 rest on a lifting and supporting device provided with the general reference number 17 (FIG. 3).
  • the mentioned line ends 14a, 16a have a shoulder 18 on their lower section, which extends between the end wall 14b, 16b of the line 14, 16 and the first tube 7b, 8b adjacent to this wall.
  • This extension 18 preferably has a slightly concave underside 18a (FIGS. 2 and 3).
  • the corresponding curved portion 19a is the circumference 19 of a cam 20, which ubvorrichung with its drive the H represents the two cable ends 14a, 16a of each manifold.
  • the cam disc 20 can be actuated by a shaft 21, preferably from outside the heat exchanger.
  • the circumference 19 of the cam forms a shoulder or shoulder 22.
  • the collecting lines 14, 16 are raised until the moment when the Edge 23 of the shoulder or shoulder 22 ari of shoulder 24 of section 19 a of cam 20 slides with the greatest radius. This sliding causes the collecting line 14, 16 to drop abruptly, since the lifting and supporting device 15 is actuated synchronously at both ends of the lines 14, 16.
  • the thickness of the extension 18 is selected to be greater than that of the shoulder or shoulder 22, so that the extension 18 rests on the circumference 19 of the cam plate 20 directly next to or in the vicinity of the extension or shoulder 22.
  • the rotary movement of the cam 20 can be repeated as often as desired; the tubes 7, 8 are held in the raised position in that the cam disc is stopped in a position according to FIG. 2 or shortly before.
  • all cams on one side of the exchanger are moved simultaneously with the cams on the other line ends by a common linkage.
  • a traverse 27 is provided for the lines 14, 16 on one side of the exchanger. This can be raised horizontally at its ends 27a, 27b by a cam plate in the manner of the cam plate 20. Each of these cams is assigned an extension 20, 31 at the level of the cams, so that the crossbars and thus the tubes 7, 8 can also be raised accordingly here.
  • the manifolds 14, 16 are fixed on the trusses.
  • connection of the manifolds 14, 16 essel drum with the not-shown K, as Fig. 5 represents, by compensating pipes 32, done 33 which are in turn passed through the wall or the ceiling 34, 35 of the boiler or the heat exchanger.
  • Either the lines 32, 33 have a corresponding cross section at both ends of the lines 14, 16 or are arranged in a plurality.
  • the tubes 7, 8 have lugs 42, 43 above them in their immediate vicinity. If the tubes .7, 8 are raised, there is a distance a between the lugs 42, 43 and the crossbars 40, 41 which is smaller than the height of the shoulder or shoulder 22 on the circumference 19 of the cam disk 20. If the shoulder 22 of the shoulder 18 falls off on the shoulder or shoulder 22 of the cam disk 20, the shoulders 42, 43 meet the cross members 40, 41.
  • the batch is 18 or are the projections 30, 31 of Figure 6 and 7 are not in the vicinity of the neck or the shoulder 22 (FIG. 3) and 28a, 29a (FIG. 7), but approximately. at 45 on the circumference 19 or 28b, 29b of the cam disc, ie at locations with a larger radius, so that the tubes 7, 8 after the shoulder or shoulder 22, 28a, 29a has slid off the shoulder 18, 30, 31 again are raised so far that the tubes 7, 8 hang and are held with the upper end on the circumference of the cam.
  • a stop can also be provided below the distribution lines 13, 15, which is preferable if, in deviation from the arrangement of the pipes shown and the meandering guidance of the gases, hanging pipes or rows of pipes and walls are used.
  • Fig. 1 it is indicated in dashed lines that instead of the wall 10 and the bottom wall 1 funnel 50 can be provided, one funnel being assigned to two adjacent streets 11; any other design and arrangement of the funnels can be chosen.
  • a cam disk such as disk 20 or disk 28 works on the principle of a wedge, which is arranged on an endless rotating chain. It is therefore possible, instead of the individual cams or the cams common for a row of tubes, to choose an endless chain which carries a wedge, the oblique wedge surface, at a distance from the tubes or at a distance from the ends of the crossmember 27 according to FIGS. 6 and 7 is directed upwards against the pipes or against the traverse. When the chain rotates, the wedges on the upper chain run raise the tubes to return to their functional position on the lower chain run. In this embodiment, additional support elements are provided for the pipes or the crossbeams, on which these parts rest until the wedges cause the pipes or the crossbeams to be lifted again.
  • the lugs on the tubes 14a, 16a or on the ends 27a, 28a of the crossbeams can likewise have a corresponding wedge shape, like any other suitable traction means instead of the chain Can be used on which the wedges, which are preferably guided in profile rails, are attached.
  • the two side walls 5a, 5b of the waste heat boiler are lined with fin tubes 51 lying next to one another, which form a closed wall.
  • These fin tubes and the side walls 5a, 5b are penetrated by the collecting tubes 14, 16, for which purpose these are passed through a tube socket 52.
  • the ends 14a, 16a of the header pipes protruding from the side walls 5a, 5b carry a sleeve 53 which has an upwardly directed support rib 54.
  • This is pivotally connected via a pin 55 to a fork 56, which in turn is connected to the piston rod 57 of a suspended pneumatic cylinder-piston unit 58, which can be e.g. hanging on a traverse 60 or the like.
  • the two cylinder piston assemblies 58 on each side of the waste heat boiler, i.e. outside the side walls 5a, 5b of the boiler, are connected to one another via a common line 61, which leads to a valve 62, the inlet and outlet of which bear the reference numbers 63, 64.
  • This valve 62 determines the pressure conditions in the cylinder-piston unit 58 for raising or lowering the collecting pipes 14, 16 and the pipes 7, 8 hanging thereon and is controlled hydraulically, pneumatically or electrically via lines 65, 66. In this way, the manifold 14, 16 of each row of tubes from the tubes 7, 8 can be raised evenly and lowered equally.
  • a suitable traverse 68 has a plurality of layers of metallic or other types of plates 69 arranged one above the other. These receive a yoke 70, which is formed from a central section 71 and two jaws 72, 73.
  • the jaws on the legs 74, 75 of the yoke have a curvature on their mutually inclined concave upper side, which corresponds to the curvature of the circumference of the sleeve 53.
  • the height of the two jaws is offset in relation to the plates 69 and the cross member 68.
  • the jaw 73 has an average height a compared to the crossmember 68, while the jaw 72 has an average height b, which is recognizably greater than the height a.
  • the manifolds 14, 16 with the tubes 7, 8 hanging thereon are subject to the action of gravity when the cylinder piston units are depressurized, so that an abrupt lowering of the parts is brought about. If this lowering is to be accelerated further, the cylinder piston assemblies 58 are actuated via the Lines 83 acted upon with unpressurized counter line 61.
  • Cylinder-piston units 58 are relieved, one or more devices can be provided over the length of the rows of tubes from the tubes 7, 8, as is or are shown in FIGS. 12 and 13.
  • the fins 76 of the tubes 51 which line the wall 5a have a rib or fin 77 which is continuous over the length of the tubes 7, 8.
  • rib or fin 77 In F ig. 2, only one rib or fin 77 is shown for one row of tubes. Each tube row is associated with such a rib or fin.
  • this rib or fin carries the tube wall 5a adjacent pipe 7, 8 also has a over the length of this Rohres continuous rib or a fin 78.
  • the rib or fin 77 with its edges 77a, 77b encloses the edge 78a of the rib or fin 78, these edges slidingly abutting one another.
  • the rib or fin 78 carries cam-shaped projections 79 at their edge 78a, which have the wedge surfaces 80, at uniform longitudinal intervals.
  • the edge 77c of the rib or F Losse 77 transmits at the same distance as the projections 79 approaches 81 with wedge surfaces 82, in which the oblique wedge faces 80 slide the cam-shaped projection 79, when the row of tubes from the tubes 7, 8 to the manifold 14, 16 is raised or lowered in the direction of arrow K (FIG. 12).
  • the tubes 7, 8 are suddenly laterally offset parallel to themselves in the direction of the arrows L.
  • the tube wall 5b opposite the tube wall 5a (cf. FIG. 8) is designed correspondingly to the tube 7, 8 adjacent to this wall.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Cleaning In General (AREA)
  • Incineration Of Waste (AREA)
EP87109148A 1986-06-30 1987-06-25 Dispositif de nettoyage des surfaces intérieures ou extérieures de tubes d'échangeurs de chaleur, posés sur pied ou suspendus Expired EP0251213B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3621850 1986-06-30
DE19863621850 DE3621850A1 (de) 1986-06-30 1986-06-30 Verfahren und einrichtung zum reinigen der innen- oder aussenwand stehender oder haengender rohre von waermetauschern
DE19863632982 DE3632982A1 (de) 1986-06-30 1986-09-29 Einrichtung zum reinigen der innen- und aussenwand stehender oder haengender rohre
DE3632982 1986-09-29

Publications (2)

Publication Number Publication Date
EP0251213A1 true EP0251213A1 (fr) 1988-01-07
EP0251213B1 EP0251213B1 (fr) 1989-10-04

Family

ID=25845100

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87109148A Expired EP0251213B1 (fr) 1986-06-30 1987-06-25 Dispositif de nettoyage des surfaces intérieures ou extérieures de tubes d'échangeurs de chaleur, posés sur pied ou suspendus

Country Status (7)

Country Link
US (2) US4831969A (fr)
EP (1) EP0251213B1 (fr)
JP (1) JPH071158B2 (fr)
DE (2) DE3632982A1 (fr)
GE (1) GEP19981166B (fr)
RU (1) RU1814722C (fr)
UA (1) UA13033A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111069103A (zh) * 2019-12-11 2020-04-28 周静纯 一种模具孔旋转式清理机

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4121815C2 (de) * 1991-07-02 1993-11-11 Schmidt Sche Heissdampf Wärmetauscher
DE4241179C2 (de) * 1992-12-08 1999-05-06 Gutehoffnungshuette Man Flossenrohrwände von Wärmetauschern
DE4302109C2 (de) * 1993-01-27 1999-01-07 Gutehoffnungshuette Man Wärmetauscher mit rauchgasumströmten Rohrwänden und zugeordneter Reinigungsvorrichtung sowie Verfahren zur Reinigung der Rohrwände
DE19544225A1 (de) * 1995-11-28 1997-06-05 Asea Brown Boveri Reinigung des Wasser-Dampfkreislaufs in einem Zwangsdurchlauferzeuger
US7093649B2 (en) * 2004-02-10 2006-08-22 Peter Dawson Flat heat exchanger plate and bulk material heat exchanger using the same
DE102008022849A1 (de) 2008-05-08 2009-11-12 Ivankovic, Josip Verfahren zum Entfernen von Ablagerungen an bzw. in Anlagenbereichen bzw. Anlagenteilen, in denen es im laufenden Betrieb der Anlage zu Ablagerungen kommt, und Vorrichtungen zur Durchführung des Verfahrens
US8002902B2 (en) * 2008-05-15 2011-08-23 Krowech Robert J Boiler cleaning apparatus and method
GB0902221D0 (en) * 2009-02-11 2009-03-25 Edwards Ltd Pilot
US10605450B2 (en) * 2014-10-24 2020-03-31 Hrst, Inc. Tube spreading device and boiler cleaning system
WO2017190769A1 (fr) 2016-05-03 2017-11-09 Carrier Corporation Agencement d'échangeur de chaleur
US12270540B2 (en) 2017-12-11 2025-04-08 Precision Iceblast Corporation Deep cleaning alignment equipment
US11313632B2 (en) * 2017-12-11 2022-04-26 Precision Iceblast Corporation Deep cleaning alignment equipment
USD876189S1 (en) 2017-12-11 2020-02-25 Precision Iceblast Corporation Deep cleaning alignment tool

Citations (6)

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Publication number Priority date Publication date Assignee Title
CH154299A (de) * 1931-03-12 1932-04-30 Sulzer Ag Vorrichtung zum Reinigen der Rohre von Wärmeaustauschern, wie Verdampfern und Überhitzern.
GB732104A (en) * 1950-12-29 1955-06-22 Svenska Maskinverken Ab Improvements relating to the cleaning of heat-exchanger tubes
FR1373827A (fr) * 1963-08-22 1964-10-02 V Teplotekhnitcheski Nii E E D Dispositif de nettoyage de surfaces tubulaires de chauffe
GB1099742A (en) * 1966-01-28 1968-01-17 V Teplotekhnichesky I Im F E D A device for vibrational cleaning of tubular heating surfaces in heat-exchange plants from external contamination mainly of slag and ash
DE3121947A1 (de) * 1981-06-03 1982-12-30 Vereinigte Kesselwerke AG, 4000 Düsseldorf Ruettelvorrichtung und anordnung der ruettelvorrichtung an einem waermetauscher
US4497282A (en) * 1983-11-23 1985-02-05 Neundorfer, Inc. Apparatus for deslagging steam generator tubes

Family Cites Families (6)

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Publication number Priority date Publication date Assignee Title
US1501646A (en) * 1922-02-01 1924-07-15 Griscom Russell Co Evaporator coil
AT308405B (de) * 1970-07-21 1973-07-10 Babcock & Wilcox Ag Von Abgasen mit hohem Staubgehalt durchströmter Abhitzekessel, insbesondere für Röstöfen
US4018267A (en) * 1975-01-10 1977-04-19 Dorr-Oliver Incorporated Cleaning heat exchanger tubes
US3971343A (en) * 1975-03-31 1976-07-27 Deutsche Babcock & Wilcox Aktiengesellschaft Devices for the cleaning of heating surfaces
US3991343A (en) * 1976-01-07 1976-11-09 Henry Delpy Control circuit for progressively varying illumination intensity of lamps
GB2152204B (en) * 1983-12-30 1988-02-24 Smidth & Co As F L Heat exchanger

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH154299A (de) * 1931-03-12 1932-04-30 Sulzer Ag Vorrichtung zum Reinigen der Rohre von Wärmeaustauschern, wie Verdampfern und Überhitzern.
GB732104A (en) * 1950-12-29 1955-06-22 Svenska Maskinverken Ab Improvements relating to the cleaning of heat-exchanger tubes
FR1373827A (fr) * 1963-08-22 1964-10-02 V Teplotekhnitcheski Nii E E D Dispositif de nettoyage de surfaces tubulaires de chauffe
GB1099742A (en) * 1966-01-28 1968-01-17 V Teplotekhnichesky I Im F E D A device for vibrational cleaning of tubular heating surfaces in heat-exchange plants from external contamination mainly of slag and ash
DE3121947A1 (de) * 1981-06-03 1982-12-30 Vereinigte Kesselwerke AG, 4000 Düsseldorf Ruettelvorrichtung und anordnung der ruettelvorrichtung an einem waermetauscher
US4497282A (en) * 1983-11-23 1985-02-05 Neundorfer, Inc. Apparatus for deslagging steam generator tubes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 8, Nr. 83 (M-290)[1520], 17. April 1984; & JP-A-59 001 999 (MITSUBISHI JUKOGYO K.K.) 07-01-1984 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111069103A (zh) * 2019-12-11 2020-04-28 周静纯 一种模具孔旋转式清理机

Also Published As

Publication number Publication date
JPS6341797A (ja) 1988-02-23
JPH071158B2 (ja) 1995-01-11
EP0251213B1 (fr) 1989-10-04
DE3632982A1 (de) 1988-03-31
US4831969A (en) 1989-05-23
GEP19981166B (en) 1998-09-25
UA13033A (uk) 1997-02-28
DE3760695D1 (en) 1989-11-09
RU1814722C (ru) 1993-05-07
US4840145A (en) 1989-06-20

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