EP1102956B1 - Procede et installation pour la gestion des elements solides mis en circulation dans un echangeur de chaleur pour le nettoyage de celui-ci - Google Patents

Procede et installation pour la gestion des elements solides mis en circulation dans un echangeur de chaleur pour le nettoyage de celui-ci Download PDF

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Publication number
EP1102956B1
EP1102956B1 EP98941555A EP98941555A EP1102956B1 EP 1102956 B1 EP1102956 B1 EP 1102956B1 EP 98941555 A EP98941555 A EP 98941555A EP 98941555 A EP98941555 A EP 98941555A EP 1102956 B1 EP1102956 B1 EP 1102956B1
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EP
European Patent Office
Prior art keywords
heat exchanger
pipe
management
solid cleaning
cleaning elements
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
EP98941555A
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German (de)
English (en)
French (fr)
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EP1102956A1 (fr
Inventor
Philip Jackson
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.)
E Beaudrey et Cie SA
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E Beaudrey et Cie SA
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Publication date
Application filed by E Beaudrey et Cie SA filed Critical E Beaudrey et Cie SA
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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

Definitions

  • the present invention relates generally to exchangers heat, and, for example, tubular heat exchangers forming condensers, which are continuously cleaned by solid elements, in practice in the form of a ball and made for example of foam rubber, systematically put into circulation for this purpose in one of the flows concerned.
  • the present invention relates more particularly to the management of the elements cleaning solids thus used.
  • this management basically involves on the one hand, to avoid that, with the flow which carries them, the solid elements cleaning in question are evacuated to the sewer, the interposition, on the heat exchanger outlet pipe, interception means suitable for their retention, and, on the other hand, recycling, towards the pipeline inlet of the heat exchanger, solid cleaning elements as well retained by these means of interception.
  • this management device For its proper functioning, this management device needs to be crossed by a given flow flow.
  • this management system must, at this day, be systematically adapted to the capacity of the installation treated, in being, in particular, duly sized accordingly.
  • the present invention generally relates to a provision to avoid this drawback.
  • the present invention also relates to a management installation. for solid cleaning elements circulating in a heat exchanger for cleaning thereof, according to claim 2.
  • the management device is spared a part the flow rate of the return flow concerned, while normally seeing the all the solid cleaning elements to be managed.
  • the concentration according to the invention advantageously makes it possible to recreate, systematically, at the entry of the management system, debit conditions determined, which correspond to its normal operating conditions.
  • the concentration device according to the invention allows advantageously reduce the power of the pump accordingly normally necessary to counterflow the flow of corresponding return.
  • FIG. 1 there is shown schematically, under the general reference 10, a heat exchanger, and, for example, a heat exchanger forming condenser, which, as shown by the arrows F1, is crossed by a flow coolant, in this case water, on the one hand, a inlet pipe 11E, and, on the other hand, an outlet pipe 11S.
  • a flow coolant in this case water
  • this is a tubular heat exchanger, which, by example, is of the type succinctly described in the French patent No 94 02109 mentioned above.
  • filtration means 12 are interposed on the inlet pipe 11E, thanks to a cuff 13.
  • solid elements of cleaning 15 are likely to be permanently circulated in the heat exchanger 10, for continuous cleaning thereof.
  • these solid cleaning elements 15 are systematically injected into the inlet pipe 11E, downstream of the filtration means 12, to be driven by the incoming flow.
  • a wheel 20 which, transversely closing the cuff 16, present, radially, between its axis and its periphery, a filter panel 21, which, under the control of means not shown, is rotatably mounted around its axis, and, on the other hand, two tubes 22A, 22R, which, each arranged respectively on either side of the wheel 20, one downstream in the direction of the outgoing flow by the outlet pipe 11S, the other upstream, are established in correspondence with each other, and are both facing the filter panel 21 wheel 20.
  • the management installation 18 comprises circulation means 24, which are capable of generating, locally, to through the means of interception 17, at the right of the horns 22A, 22R, a circulation against the current, and which themselves, to do this, on the one hand, an inlet pipe 25A, established between the inlet pipe 11E of the heat exchanger 10 and its outlet pipe 11S, this inlet pipe 25A connecting more precisely to the horn 22A disposed downstream of the interception means 17, and, on the other hand, a pipe return 25R, which, connected to the 22R horn located upstream of interception means 17, recycles to the inlet pipe 11E of the heat exchanger 10 a return flow containing the solid elements of cleaning 15 retained by these interception means 17, and on which is disposed a device 26 for managing these solid cleaning elements 15, with a view, in particular, to controlling the number of these, eliminating those whose dimensions are no longer sufficient, and a replenishment in solid cleaning elements 15 new.
  • circulation means 24 are capable of generating, locally, to through the means of interception 17, at the right
  • This management device 26 does not fall under the present invention, it does not will not be described here.
  • a concentration device 27 able to take up the concentration of the corresponding return flow in solid elements of cleaning 15.
  • a concentration device 27 dividing the flow corresponding return in two parts, namely, as schematized by the arrows P1, P2 in FIG. 1, a part P1, or main part, which contains normally all the solid cleaning elements 15 in circulation, and which is directed to the management device 26, and a second part P2, or part derivative, which is normally devoid of any solid cleaning element 15, and which is excluded from this management device 26.
  • the main part P1 corresponds to a minority of the flow of back processed, and the derivative part P2 to a majority of it.
  • the main part P1 is at relatively low speed, and the derivative part P2 at relatively high speed.
  • the management installation 18 has a recycling line 28 which directs the derived part P2 of the flow back on the outlet pipe 11S of the heat exchanger 10.
  • this conduct of recycling 28 is connected to the supply line 25A.
  • the circulation means 24 comprising a pump 30 on this inlet pipe 25A
  • the recycling pipe 28 is connects to this inlet pipe 25A upstream of this pump 30.
  • valves 34, 35 are provided on the supply line 25A, one upstream of the pump 30, the other downstream of the latter, for a possible isolation of this pump 30, and, jointly, this pipe 25A inlet is doubled locally by a bypass line 37, for switching off the pump 30 if desired.
  • this bypass pipe 37 operates a non-return valve 38.
  • valve 39 which operates downstream of the management device 26.
  • the return line 25R dessert in the cuff 13, nozzles 40, which provide the injection, in the incoming flow, solid cleaning elements 15 to put back in or put in circulation in it, and which, preferably, are oriented against the current.
  • a discharge pipe 42 connected to the pipe outlet 11S of the heat exchanger 10, by connecting to this pipe return 25R between the horn 22R from which it originates and the device for concentration 27, for possible removal of the solid cleaning elements 15.
  • a pipe discharge 44 connected to the outlet pipe 11S of the heat exchanger 10, for evacuation debris retained by these filtration means 12.
  • the concentration device 27 is, preferably, and as shown, a filter comprising at least one grid 46 at the downstream end of which intervenes, as shown schematically on the Figures 2 and 3, a vortex chamber 47.
  • the device concentration 27 has, in V, two grids 46, which converge one with the other towards the vortex chamber 47.
  • These grids 46 are for example made up of bars 48 of which the spacing is less than the diameter of the solid cleaning elements 15.
  • the grids 46 are fixed.
  • a washing line 49 is then provided, which, controlled by a valve 50, connects the discharge of the pump 30 to the downstream end of the concentration 27, for circulation against the current through the grids 46 that this involves.
  • the solid cleaning elements 15 pass continuously the heat exchanger 10, and, retained by the interception means 17 at the leaving it, they are recycled upon entry after, successively, their passage in the concentration device 27, which separates them from the larger part of the corresponding flow, and their passage through the management device 26, who handles the processing.
  • the concentration device 27 the flow conditions at the inlet of the management device 26 are well determined, and they correspond to the normal operating conditions of this management system 26.
  • the evacuation pipe 42 allows the removal of the elements cleaning solids 15.
  • this discharge pipe 42 it is then interposed, on this discharge pipe 42, a collector 52 suitable for the collection of these solid cleaning elements 15, to avoid that, definitely escaping management facility 18, these are not untimely evacuated to the sewer.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Cleaning In General (AREA)
EP98941555A 1998-08-06 1998-08-06 Procede et installation pour la gestion des elements solides mis en circulation dans un echangeur de chaleur pour le nettoyage de celui-ci Expired - Lifetime EP1102956B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FR1998/001756 WO2000008404A1 (fr) 1998-08-06 1998-08-06 Procede et installation pour la gestion des elements solides mis en circulation dans un echangeur de chaleur pour le nettoyage de celui-ci

Publications (2)

Publication Number Publication Date
EP1102956A1 EP1102956A1 (fr) 2001-05-30
EP1102956B1 true EP1102956B1 (fr) 2002-11-13

Family

ID=9522945

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98941555A Expired - Lifetime EP1102956B1 (fr) 1998-08-06 1998-08-06 Procede et installation pour la gestion des elements solides mis en circulation dans un echangeur de chaleur pour le nettoyage de celui-ci

Country Status (4)

Country Link
EP (1) EP1102956B1 (https=)
JP (1) JP4090199B2 (https=)
DE (1) DE19883011B4 (https=)
WO (1) WO2000008404A1 (https=)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1795348A (en) 1927-03-30 1931-03-10 Westinghouse Electric & Mfg Co Condenser-cleaning system
FR2468868A1 (fr) * 1979-11-06 1981-05-08 Taprogge Reinigungsanlagen Installation de nettoyage des tubes d'un condenseur pour centrale productrice d'energie
KR860000855B1 (ko) * 1980-06-30 1986-07-09 가부시기가이샤 히다찌 세이사꾸쇼 열교환기 열전도 도관의 세정장치
FR2495028A1 (fr) * 1980-12-01 1982-06-04 Alsthom Atlantique Element de nettoyage et installation de nettoyage mettant en oeuvre cet element
FR2609644B1 (fr) 1987-01-16 1991-01-04 Beaudrey & Cie Filtre auto-nettoyant a inserer sur une conduite sous pression
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
DE4029196A1 (de) * 1990-09-14 1992-03-19 Taprogge Gmbh Verfahren zur messung der reinigungswirksamkeit von schwammgummikugeln in waermetauschern sowie verfahren und anlage zur indirekten messung des waermeuebergangs an kondensatorrohren
US5450895A (en) * 1993-11-18 1995-09-19 C.Q.M. Ltd. Apparatus for separating balls from fluid, particularly for systems using the balls for cleaning fluid-conducting tubing
FR2716530B1 (fr) 1994-02-24 1996-07-12 Beaudrey & Cie Dispositif d'interception pour éléments solides circulant dans un échangeur de chaleur pour le nettoyage de celui-ci.
FR2766915B1 (fr) * 1997-07-31 1999-10-08 Beaudrey & Cie Procede pour la gestion des elements solides mis en circulation dans un echangeur de chaleur pour le nettoyage de celui-ci, et installation correspondante

Also Published As

Publication number Publication date
WO2000008404A1 (fr) 2000-02-17
DE19883011B4 (de) 2008-11-27
JP2002522740A (ja) 2002-07-23
EP1102956A1 (fr) 2001-05-30
JP4090199B2 (ja) 2008-05-28
DE19883011T1 (de) 2001-07-12

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