EP0679854A1 - Verbesserungen an Vorrichtungen zur Reinigung von Rohren mittels elastischer Kugeln - Google Patents

Verbesserungen an Vorrichtungen zur Reinigung von Rohren mittels elastischer Kugeln Download PDF

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Publication number
EP0679854A1
EP0679854A1 EP95400920A EP95400920A EP0679854A1 EP 0679854 A1 EP0679854 A1 EP 0679854A1 EP 95400920 A EP95400920 A EP 95400920A EP 95400920 A EP95400920 A EP 95400920A EP 0679854 A1 EP0679854 A1 EP 0679854A1
Authority
EP
European Patent Office
Prior art keywords
balls
sections
receptacle
new
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.)
Granted
Application number
EP95400920A
Other languages
English (en)
French (fr)
Other versions
EP0679854B1 (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 installations making it possible to clean the tubes of a heat exchanger or of a condenser by circulation of balls of spongy elastic material entrained by a stream of water inside these tubes, the diameter of these balls being slightly greater than the inside diameter of the tubes.
  • the balls in question wear out and must be replaced when their diameter has become too small for them to remain effective.
  • This replacement requires, on the one hand, the evacuation of the worn balls and, on the other hand, their replacement with new balls.
  • the worn balls can be removed all simultaneously as soon as it is estimated that the percentage of those used among all of those circulating is high enough for the entire load to be changed.
  • sorter for example of the type which has been the subject of patent FR-A-88 10128, 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 which should be injected into the circuit to complete the charge, the latter number being equal to that worn balls removed from the circuit.
  • This impregnation can be done by kneading the balls by hand under water or, which is preferable, by means of an impregnator, for example of the type which has been the subject of patent application FR-A-93 07547.
  • the cleaning systems of the different sections are then mounted in parallel with one another or in series one after the other.
  • the balls collected downstream of each section are directed to a recycling pump common to the different systems, which delivers them upstream of the sections.
  • the unique ball charge renewal system 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 recycling pump of the cleaning system of this section to the upstream of the section neighbor so that the balls pass successively through the different sections.
  • the single system for renewing the charge of balls is then placed on any one of the recycling sections.
  • the object of the invention is, above all, to remedy these various drawbacks by proposing, for cleaning all the tubes of an exchanger or condenser composed of several sections in parallel, an installation that is both very efficient and very economical. , comprising only some common features 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 inlet 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 main provisions, certain other provisions which are preferably used at the same time and which will be more explicitly discussed below.
  • Figure 1 of these drawings schematically shows a ball cleaning installation according to 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 similarly show in 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 cleaning installation.
  • the drawings considered relate generally to an installation for cleaning the tubes of a tubular condenser 1 comprising four identical sections mounted in parallel.
  • Each section is served by a pipeline 2 for cooling water inlet itself connected to a common upstream pipe 3 and by a pipe 4 for heated water outlet connected to a common downstream pipe 5.
  • a set of these different devices 6 to 10, which operates in regime with a given ball load, is assigned individually to each of the different sections of the condenser.
  • Said single means pooled essentially comprise a receptacle 11 capable of being supplied with new balls and connected to the four sections 6 by four pipes each equipped with a valve.
  • the pipes and valves in question are designated respectively by the references 12 and 13 and said pipes are respectively connected to the sections 6 at points 14, of these sections, located just upstream of the pumps 8.
  • the receptacle 11 in FIG. 1 is connected by four pipes 15 fitted with as many valves 16 to the four ball collectors 9 and, by a pipe 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 manifold 9 can be designed in the manner which has been shown diagrammatically in FIG. 2, that is to say comprises a housing 21 containing a strainer basket 22 equipped with a ball trapping valve 23, and the pipe 15 associated with this manifold 9 opens into the housing 21 upstream of the basket 22.
  • FIGS. 1 and 2 The typical installation thus shown diagrammatically in FIGS. 1 and 2 operates as follows, with regard to the renewal of the worn balls.
  • the discharge pressure of the pump 8 is always higher than atmospheric pressure, the water flows from the collector 9 through the pipe 15 to the receptacle 11 and its emptying through the tube 19 carries with it the used balls collected in the collector 9.
  • the receptacle 11 is filled with water, all the valves 13 and 16 being closed, the charge is introduced into this receptacle 11, through its upper opening, then cleared. new balls to inject and we impregnate this load of water, kneading it by hand underwater.
  • Such an operation of injecting new balls can be carried out successively for each of the sections of the condenser.
  • the impregnation of the new balls in water can be carried out using a mechanical device.
  • Such a device is advantageously one of those which have been described in the FRANCE patent application cited above and which implement at least one pumping cycle of 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 the section 6 and combined with a housing 25 containing a perforated partition 26 capable of being crossed by the water but not by the 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 the section 6 through a diaphragm 27 of adjustable section and a valve 28 (as for example described in the FRANCE patent cited above).
  • the implementation of the assembly constituted by these elements 24 to 28 differs from that of the collector 9 in that only the ones 15 are evacuated by the pipes circulating in the section 6, which are the most worn, that is, the diameter of which drops below a predetermined threshold value: these balls are collected in the housing 25 and the value of the minimum diameter considered as defining the wear threshold can be adjusted by adjusting the diaphragm opening 27.
  • FIGS. 4 and 5 Two variants of the overall diagram of FIG. 1 which can be envisaged in accordance with the invention are illustrated respectively in FIGS. 4 and 5.
  • This new variant differs from the embodiment of FIG. 1 in that the pipes 12 with their valves 13 are completely eliminated (which of course also suppresses a deletion of the portions of the vertical lines in FIG. 1 which correspond to the pipes 12 and are located above the line T).
  • conduit 17 is equipped with a pump circulation 30 capable of increasing the force of circulation of the water coming from the pipe 3 in the pipe 17, in the direction of the receptacle 11.
  • this pump is capable of delivering water at a pressure higher than that prevailing in the collectors 9.
  • the pipes 12 and 15 are relatively long (their length being shown diagrammatically by the space between the two parallel broken lines T which cut said pipes) and have the smallest possible diameter.
  • pipes can be used for these pipes whose internal diameter is very slightly larger than the diameter of new balls.
  • Such a vortex movement can be obtained by means of a tangential orientation of the admission of water into the housing as shown in FIG. 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 new ball injection device also has the great advantage of requiring a single reserve of new balls for the entire installation, which simplifies supply problems while improving safety.
  • the invention makes it possible to pool the single station, of the entire cleaning installation, which in all circumstances requires chronic external intervention, namely the reserve of new balls: there is no here necessary to ensure the supply of new balls only from a single tank and not more than a number of tanks equal to that of the "sections".
  • the installation does not have any of the drawbacks indicated above for the parallel or series mounting of the different sections: the cleaning circuits relating to the different sections remaining individualized and autonomous during their operation, it there is no risk of uneven distribution of the balls between the different sections; similarly, the occurrence of an incident on any one of said sections in no way results in the interruption of cleaning on the other sections.
  • the receptacle 11 can easily be installed far from the tubular bundle to be cleaned, in a place whose access is easier for operating personnel than said tubular bundle, since this receptacle can be connected to the sections 6 bypass via long pipes (12, 15) (their length can easily reach or even exceed a hundred meters), and whose internal diameter is relatively small and very little greater than the diameter of the balls: while, in current embodiments, the diameter of the pipes connecting the injection devices of new balls to the installations considered is of the order of 80 mm, the diameter in question is advantageously here of the order from 1.1 to 1.5 times only 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 wall thickness 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)
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
FR9405169 1994-04-28
FR9405169A FR2719243B1 (fr) 1994-04-28 1994-04-28 Perfectionnements aux installations de nettoyage de tubes par circulation de boules élastiques.

Publications (2)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1249678A1 (de) * 2001-04-13 2002-10-16 Beaudrey C S Verwaltungsvorrichtung für in einem Wärmetauscher zirkulierende Festkörper zur Reinigung
CN103769399A (zh) * 2014-01-10 2014-05-07 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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4227095B2 (ja) * 2002-05-30 2009-02-18 ハイドロボール テクニックス ホールディングズ ピーティイー リミテッド 改良型クリーニングシステム
WO2014046510A1 (ko) * 2012-09-20 2014-03-27 정우산기 주식회사 볼 재순환 장치
RS64621B1 (sr) * 2013-10-22 2023-10-31 Bechtel Energy Technologies & Solutions Inc Sistem za kracovanje i ispiranje izlaza koksnih peći za vreme pogona

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2541902A1 (de) * 1974-09-20 1976-04-01 Hitachi Ltd Rotationskollektor
DE3125546A1 (de) * 1980-06-30 1982-03-04 Hitachi, Ltd., Tokyo Verfahren und system zum reinigen der kuehlrohre eines waermetauschers
EP0353154A1 (de) * 1988-07-27 1990-01-31 Technos Et Compagnie Vorrichtung zum Abscheiden von abgeriebenen Reinigungskugeln aus Rohrbündeln

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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.
IL94289A (en) * 1990-05-04 1992-12-01 Balls Technics Ltd Cleaning system for cleaning fluid-conducting tubing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2541902A1 (de) * 1974-09-20 1976-04-01 Hitachi Ltd Rotationskollektor
DE3125546A1 (de) * 1980-06-30 1982-03-04 Hitachi, Ltd., Tokyo Verfahren und system zum reinigen der kuehlrohre eines waermetauschers
EP0353154A1 (de) * 1988-07-27 1990-01-31 Technos Et Compagnie Vorrichtung zum Abscheiden von abgeriebenen Reinigungskugeln aus Rohrbündeln
FR2634672A1 (fr) * 1988-07-27 1990-02-02 Technos Cie Perfectionnements aux dispositifs pour eliminer les boules usees des installations de nettoyage de faisceaux tubulaires

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1249678A1 (de) * 2001-04-13 2002-10-16 Beaudrey C S Verwaltungsvorrichtung für in einem Wärmetauscher zirkulierende Festkörper zur Reinigung
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
CN103769399A (zh) * 2014-01-10 2014-05-07 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
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

Also Published As

Publication number Publication date
JPH0849997A (ja) 1996-02-20
KR950031256A (ko) 1995-12-18
DE69501799D1 (de) 1998-04-23
FR2719243A1 (fr) 1995-11-03
EP0679854B1 (de) 1998-03-18
JP2922820B2 (ja) 1999-07-26
CA2147424A1 (en) 1995-10-29
ES2113717T3 (es) 1998-05-01
CA2147424C (en) 2004-06-29
FR2719243B1 (fr) 1996-07-05
US5518068A (en) 1996-05-21
KR100303690B1 (ko) 2001-11-22
DE69501799T2 (de) 1998-10-29
TW264407B (de) 1995-12-01

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