EP0679854B1 - Vorrichtung zur Reinigung von Rohren mittels elastischer Kugeln - Google Patents

Vorrichtung zur Reinigung von Rohren mittels elastischer Kugeln Download PDF

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Publication number
EP0679854B1
EP0679854B1 EP95400920A EP95400920A EP0679854B1 EP 0679854 B1 EP0679854 B1 EP 0679854B1 EP 95400920 A EP95400920 A EP 95400920A EP 95400920 A EP95400920 A EP 95400920A EP 0679854 B1 EP0679854 B1 EP 0679854B1
Authority
EP
European Patent Office
Prior art keywords
balls
receptacle
cleaning
sections
installation according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95400920A
Other languages
English (en)
French (fr)
Other versions
EP0679854A1 (de
Inventor
Roger Ricard
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.)
Technos et Cie
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Technos et Cie
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Filing date
Publication date
Application filed by Technos et Cie filed Critical Technos et Cie
Publication of EP0679854A1 publication Critical patent/EP0679854A1/de
Application granted granted Critical
Publication of EP0679854B1 publication Critical patent/EP0679854B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G1/00—Non-rotary, e.g. reciprocated, appliances
    • F28G1/12—Fluid-propelled scrapers, bullets, or like solid bodies
    • 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
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
    • B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
    • B08B9/0552—Spherically shaped pigs

Definitions

  • the invention relates to an installation of the type described in the preamble of claim 1.
  • Such an installation is known, for example, from document DE-A-25 41 902.
  • the balls in question wear out and must be replace when their diameter has become too small to keep them effective.
  • This replacement requires, on the one hand, evacuation worn balls and, on the other hand, their replacement by new balls.
  • Worn balls can be removed all simultaneously as soon as it is estimated that the percentage of those that are worn out among all of those that are high enough to be suitable for change the whole load.
  • sorter for example of the type of that which was the subject of document EP-A-0 353 154 which sorter can be associated with a ball counter counting the number of balls remaining in circulation and thus indicating the number of new balls that it is appropriate inject into the circuit to complete the charge, last number being equal to that of the worn balls removed from the circuit.
  • This impregnation can be done by kneading the balls by hand underwater or, preferably, at using an impregnator, for example of the type having been the subject of application EP-A-0 631 103.
  • the cleaning systems of the different sections are then mounted in parallel with each other others or in series following each other.
  • the balls collected downstream of each section are directed to a common recycling pump different systems, which drives them upstream sections.
  • the unique charge renewal system of balls is then placed on the section of the circuit recycling of balls common to the different systems.
  • the balls collected downstream of a given section are sent by the pump to recycle the cleaning system from this section to upstream of the neighboring section so that the balls successively run through the different sections.
  • the unique ball charge renewal system is then placed on any of the sections of recycling.
  • the invention aims, above all, to remedy these various disadvantages in proposing, for the cleaning of all the tubes of a compound exchanger or condenser of several sections in parallel, an installation at the both very efficient and very economical, comprising only some devices in common for all sections.
  • the installations according to the invention intended for cleaning the tubes of an assembly composed of n sections in parallel, n being an integer greater than 1, also include, for each of these sections, a section of branched piping. comprising an upstream ball recovery device mounted on the outlet of the section in question, a drive pump, a ball collector and a ball reinjection device mounted at the entrance of said section, and they are essentially characterized in that that they comprise a single device for injecting new balls mounted so as to serve each of the n sections alternately.
  • the invention includes, apart from these arrangements main, certain other provisions which preferably used at the same time and which will be more explicitly question below.
  • FIG. 1 shows schematically a ball cleaning installation in accordance with the invention.
  • FIGS 2 and 3 schematically show in more detail two embodiments of one of the devices included in this installation.
  • Figures 4 and 5 show similarly to the Figure 1 two variants according to the invention of a part of the cleaning installation.
  • FIGS 6 and 7 schematically show advantageous embodiments and in accordance with the invention of two of the devices included in the installation of cleaning.
  • Each section is served by a pipeline 2 cooling water inlet itself connected to a common upstream pipe 3 and by a pipe 4 of heated water outlet connected to a common downstream pipe 5.
  • a set of these different devices 6 to 10, which works in regime with a given ball load, is assigned individually to each of the different sections of the condenser.
  • Said unique means pooled include essentially a receptacle 11 suitable for being supplied in new balls and connected to the four sections 6 by four pipes, each equipped with a valve.
  • the receptacle 11 of Figure 1 is connected by four pipes 15 equipped with as many valves 16 to the four ball collectors 9 and, by a duct 17 fitted with a valve 18, to the upstream pipe 3, and it is itself connected to a drain pipe 19 fitted with a valve 20.
  • the collector 9 can be designed in the way that has been shown diagrammatically in the figure 2, that is to say comprises a housing 21 containing a basket strainer 22 fitted with a ball trapping valve 23, and the pipe 15 associated with this manifold 9 opens in the housing 21 upstream of the basket 22.
  • valve 23 As long as valve 23 is open and valve 16 associated with line 15 is closed, the balls circulating in section 6 cross without hindrance the collector 9.
  • receptacle 11 To inject a load of new balls, we fills receptacle 11 with water, all valves 13 and 16 being closed, this receptacle 11 is introduced into through its upper opening, then cleared, the load new balls to inject and we impregnate this charge of water, kneading it by hand underwater.
  • the pressure in the latter leads, connected to the upstream line 3, always being greater than the pressure in the suction pipe of pump 8, the water flows from the conduit 17, through the receptacle 11 and line 12, up to the section 6 concerned, bringing with it the new balls to be injected.
  • Such an operation of injecting new balls can be performed successively for each of sections of the condenser.
  • the impregnation of the balls water can be carried out using a device mechanical.
  • Such a device is advantageously one of those which have been described in the cited FRANCE patent application above and which implement at least one cycle of pumping a piston pump or the like.
  • each new ball collector can be associated with or replaced by a ball sorter 24 ( Figure 3) itself mounted on section 6 and combined with a housing 25 containing a perforated partition 26 capable to be crossed by water but not by balls, the inner portion of this housing, located upstream of the partition 26 being connected to the corresponding pipe 15 and its downstream portion being connected to section 6 through a diaphragm 27 of adjustable section and a valve 28 (as for example described in the patent FRANCE cited above).
  • the implementation of the assembly constituted by these elements 24 to 28 differs from that of collector 9 in that that only those evacuated by line 15 are those, balls in circulation in section 6, which are the more worn, i.e. with a diameter below a predetermined threshold value: these balls are collected in the case 25 and the value of the diameter minimum considered as defining the wear threshold can be adjusted by adjusting the aperture of the diaphragm 27.
  • FIGS. 4 and 5 Two variants of the overall diagram of the figure 1 which can be envisaged in accordance with the invention are illustrated respectively in FIGS. 4 and 5.
  • conduit 17 is equipped with a pump circulation 30 likely to increase the strength of circulation of water from line 3 in the conduit 17, in the direction of receptacle 11.
  • this pump is capable of delivering water at a pressure higher than that prevailing in the collectors 9.
  • the used balls are evacuated as before, the valve 18 then being closed and the pump 30, out of service.
  • This variant is particularly interesting since it allows to remove all the pipes 12 and their valves 13.
  • lines 12 and 15 are relatively long (their length being schematized by the space between the two lines interrupted parallels T which cut said pipes) and have the smallest possible diameter.
  • Such a vortex movement can be obtained through a tangential orientation of the admission of the water in the case as shown on the figure 6.
  • This advantage is particularly appreciable when the device for injecting new balls is associated with a more or less automatic water impregnator.
  • the pooling of the injection device new balls also has the great advantage of require only one reserve of new balls for the whole of installation, which simplifies problems while improving security.
  • the invention makes it possible to put in common the single station, of the whole installation cleaning, which in all circumstances requires a chronic external intervention, namely the reserve of new balls: it is not necessary here to take care to supply of new balls only from one tank and not more than a number of tanks equal to that of "sections".
  • the installation does not have any of the above drawbacks for parallel or serial mounting of different sections: the relative cleaning circuits to the different sections remaining individualized and autonomous during their operation, there is no risk of uneven distribution of the balls between the different sections; similarly, the occurrence of a incident on any of the said sections does not no interruption of cleaning on others sections.
  • the receptacle 11 can easily be installed far from the tube bundle to be cleaned, in a place with more access easy for operating personnel that said beam tubular, since this receptacle can be connected to 6 sections of bypass via pipelines (12, 15) long (their length can easily reach or even exceed one hundred meters), and of which the inside diameter is relatively small and very little greater than the diameter of the balls: whereas, in the current achievements, the diameter of the pipes connecting the new ball injection devices to the installations considered is around 80 mm, the diameter in question is advantageously here of the order only 1.1 to 1.5 times the diameter of the balls, which is generally between 18 and 40 mm; in particular, for a diameter of the balls of the order of 19 mm, the outside diameter of the pipes considered can be equal to 25.4 mm (one inch) only for a thickness of wall of the order of 2 mm.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Cleaning In General (AREA)

Claims (9)

  1. Einrichtung zum Reinigen der Rohre einer Vorrichtung (1), wie zum Beispiel eines Austauschers oder Kondensators, bestehend aus n parallelen Abschnitten, wobei n eine ganze Zahl größer als 1 ist, durch Zirkulieren von Kugeln in einem Wasserfluß im Inneren dieser Rohre, für jeden dieser Abschnitte bestehend aus einem Umgehungsrohrschuß (6), der eine Auffangvorrichtung für Kugeln (7) oberhalb des Auslasses (4) des betreffenden Abschnittes, eine Strahlpumpe (8), eine Sammelvorrichtung für die Kugeln (9) und eine Vorrichtung zur Wiedereinführung der Kugeln (10) aufweist, die am Einlaß (2) des betreffenden Abschnittes montiert ist, dadurch gekennzeichnet, daß sie eine einzige Vorrichtung zur Einführung von neuen Kugeln (11) aufweist, die so angebracht ist, daß sie wechselweise jeden der n Rohrschüsse (6) bedient.
  2. Reinigungsrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Vorrichtung zur Einführung von neuen Kugeln einen einzigen Behälter für neue Kugeln (11) aufweist, der mit Hilfe von n Rohren (12; 15) mit den n Rohrschüssen (6) verbunden ist, und die jeweils mit n Ventilen (13;16) versehen sind.
  3. Reinigungsrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Behälter (11) mit Hilfe einer Leitung (17), die mit einem Ventil (18) versehen ist, mit einer Quelle von unter Druck stehendem Wasser verbunden ist.
  4. Reinigungsrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Behälter (11) mit Hilfe einer Leitung (17), die mit einem Ventil (18) und einer Pumpe (30) versehen ist, mit der Wasserleitung (3) oberhalb der zu reinigenden Rohrvorrichtung verbunden ist.
  5. Reinigungseinrichtung nach einem der Ansprüche 3 und 4, dadurch gekennzeichnet, daß der Behälter (11) im allgemeinen eine sich um eine Achse drehende Form aufweist und daß die Leitung (17) tangential in diesen Behälter mündet.
  6. Reinigungseinrichtung nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß der Behälter (11) mit einer Vorrichtung verbunden ist, mit der die neuen Kugeln, die er aufnimmt, mit Wasser getränkt werden können.
  7. Reinigungseinrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß sie femer eine einzige Vorrichtung (11,29) zur Entnahme von abgenutzten Kugeln aufweist, die so angebracht ist, daß sie mit Hilfe der n Rohre (15), die mit n Ventilen (16) versehen sind, wechselweise mit jedem der n Rohrschüsse verbunden ist.
  8. Reinigungseinrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die n Rohre (15), die mit n Ventilen (16) verbunden sind, an zwei Vorrichtungen zur Entnahme von abgenutzten Kugeln und zur Einführung von neuen Kugeln angeschlossen sind und zu diesem Zweck wechselweise in beide Richtungen für jeweils diese beiden Funktionen verwendet werden können.
  9. Reinigungseinrichtung nach einem der Ansprüche 2 bis 8, dadurch gekennzeichnet, daß die n Rohre (12,15), die mindestens die Vorrichtung zur Einführung von neuen Kugeln mit den n Umgehungsrohrschüssen (6) verbindet, Innendurchmesser haben, die etwas größer als die Durchmesser der Kugeln sind.
EP95400920A 1994-04-28 1995-04-25 Vorrichtung zur Reinigung von Rohren mittels elastischer Kugeln Expired - Lifetime EP0679854B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9405169A FR2719243B1 (fr) 1994-04-28 1994-04-28 Perfectionnements aux installations de nettoyage de tubes par circulation de boules élastiques.
FR9405169 1994-04-28

Publications (2)

Publication Number Publication Date
EP0679854A1 EP0679854A1 (de) 1995-11-02
EP0679854B1 true EP0679854B1 (de) 1998-03-18

Family

ID=9462631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95400920A Expired - Lifetime EP0679854B1 (de) 1994-04-28 1995-04-25 Vorrichtung zur Reinigung von Rohren mittels elastischer Kugeln

Country Status (9)

Country Link
US (1) US5518068A (de)
EP (1) EP0679854B1 (de)
JP (1) JP2922820B2 (de)
KR (1) KR100303690B1 (de)
CA (1) CA2147424C (de)
DE (1) DE69501799T2 (de)
ES (1) ES2113717T3 (de)
FR (1) FR2719243B1 (de)
TW (1) TW264407B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2823560A1 (fr) * 2001-04-13 2002-10-18 Beaudrey C S Installation de gestion des elements solides mis en circulation dans un echangeur de chaleur pour le nettoyage de celui-ci comprenant un trieur et trieur pour une telle installation de gestion
US7036564B2 (en) * 2002-05-30 2006-05-02 Hydroball Technics Holdings Pte Ltd. Cleaning system
US9835393B2 (en) * 2012-09-20 2017-12-05 Jeongwoo Industrial Machine Co., Ltd. Apparatus for circulating balls for cleaning a pipe line
HUE063447T2 (hu) * 2013-10-22 2024-01-28 Bechtel Energy Tech & Solutions Inc Rendszer kokszmentesítéshez és leválásához a kokszolókemencék kijárataiban
CN103769399B (zh) * 2014-01-10 2016-01-20 甘肃富民生态农业科技有限公司 螺旋管壁的清洗装置及其清洗方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5135809A (ja) * 1974-09-20 1976-03-26 Hitachi Ltd Kaitenshikihoshusochi
JPS5714193A (en) * 1980-06-30 1982-01-25 Hitachi Ltd Distributing and controlling method of cleaning balls
DE3316022C1 (de) * 1983-03-17 1984-08-30 Taprogge GmbH, 4000 Düsseldorf Verfahren und Anordnung zur UEberwachung der Betriebsfaehigkeit einer Einrichtung fuer die Reinigung der Roehren einer Kraftwerkskondensatoranlage o.dgl.
FR2634672B1 (fr) * 1988-07-27 1990-11-09 Technos Cie Perfectionnements aux dispositifs pour eliminer les boules usees des installations de nettoyage de faisceaux tubulaires
IL94289A (en) * 1990-05-04 1992-12-01 Balls Technics Ltd Cleaning system for cleaning fluid-conducting tubing

Also Published As

Publication number Publication date
ES2113717T3 (es) 1998-05-01
KR950031256A (ko) 1995-12-18
JPH0849997A (ja) 1996-02-20
US5518068A (en) 1996-05-21
JP2922820B2 (ja) 1999-07-26
DE69501799T2 (de) 1998-10-29
KR100303690B1 (ko) 2001-11-22
FR2719243B1 (fr) 1996-07-05
CA2147424C (en) 2004-06-29
CA2147424A1 (en) 1995-10-29
DE69501799D1 (de) 1998-04-23
FR2719243A1 (fr) 1995-11-03
EP0679854A1 (de) 1995-11-02
TW264407B (de) 1995-12-01

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