EP1102956B1 - Method and installation for managing solid elements circulating in a heat exchanger for cleaning the latter - Google Patents

Method and installation for managing solid elements circulating in a heat exchanger for cleaning the latter 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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Prior art keywords
heat exchanger
pipe
management
solid cleaning
cleaning elements
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EP98941555A
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German (de)
French (fr)
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EP1102956A1 (en
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Philip Jackson
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E Beaudrey et Cie SA
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E Beaudrey et Cie SA
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    • 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.

Description

La présente invention concerne d'une manière générale les échangeurs de chaleur, et, par exemple, les échangeurs de chaleur tubulaires formant condenseurs, dont le nettoyage est assuré en continu par des éléments solides, en pratique en forme de boule et réalisés par exemple en caoutchouc mousse, mis systématiquement en circulation à cet effet dans l'un des flux concernés.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.

Dans leur principe, les dispositions correspondantes sont connues de longue date, notamment par les documents US-A-1 795 348 et DE-A- 23 14 329.In principle, the corresponding provisions are known from longstanding, in particular by documents US-A-1,795,348 and DE-A- 23 14 329.

La présente invention vise plus particulièrement la gestion des éléments solides de nettoyage ainsi mis en oeuvre.The present invention relates more particularly to the management of the elements cleaning solids thus used.

Suivant des dispositions qui peuvent par exemple être du type de celles décrites dans le brevet français déposé le 24 février 1994 sous le No 94 02109 et publié sous le No 2 716 530, cette gestion implique, fondamentalement, d'une part, pour éviter que, avec le flux qui les véhicule, les éléments solides de nettoyage en cause soient évacués à l'égout, l'interposition, sur la canalisation de sortie de l'échangeur de chaleur, de moyens d'interception propres à leur retenue, et, d'autre part, le recyclage, vers la canalisation d'entrée de l'échangeur de chaleur, des éléments solides de nettoyage ainsi retenus par ces moyens d'interception.According to provisions which can for example be of the type of those described in the French patent filed on February 24, 1994 under No 94 02109 and published under No 2 716 530, 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.

Mais, dans la pratique, il est également nécessaire de faire passer systématiquement les éléments solides de nettoyage à travers un dispositif de gestion propre, notamment, à en contrôler le nombre, à trier, et à éliminer, ceux dont les dimensions sont devenues, par usure, inférieures à celles requises, et à permettre, en conséquence, un réapprovisionnement de l'ensemble en éléments solides de nettoyage neufs.But, in practice, it is also necessary to pass systematically the solid elements of cleaning through a device of own management, in particular, to control the number, to sort and to eliminate, those whose dimensions have become, by wear, smaller than those required, and allow, consequently, a restocking of the whole in elements new cleaning solids.

Pour son bon fonctionnement, ce dispositif de gestion nécessite d'être traversé par un flux de débit donné. For its proper functioning, this management device needs to be crossed by a given flow flow.

II en résulte que, au détriment des coûts, ce dispositif de gestion doit, à ce jour, être systématiquement adapté à la capacité de l'installation traitée, en étant, notamment, dûment dimensionné en conséquence.As a result, at the expense of costs, this management system must, at this day, be systematically adapted to the capacity of the installation treated, in being, in particular, duly sized accordingly.

La présente invention a d'une manière générale pour objet une disposition permettant d'éviter cet inconvénient.The present invention generally relates to a provision to avoid this drawback.

De manière plus précise, elle a tout d'abord pour objet un procédé pour la gestion des éléments solides de nettoyage mis en circulation dans un échangeur de chaleur pour le nettoyage de celui-ci, selon la revendication 1.More specifically, it firstly relates to a process for the management of the solid cleaning elements circulated in a heat exchanger for cleaning thereof according to claim 1.

La présente invention a également pour objet une installation de gestion pour éléments solides de nettoyage circulant, dans un échangeur de chaleur pour le nettoyage de celui-ci, selon la revendication 2. 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.

Ainsi, suivant l'invention, le dispositif de gestion est épargné d'une partie du débit du flux de retour concerné, tout en voyant normalement défiler la totalité des éléments solides de nettoyage à gérer.Thus, according to the invention, 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.

Plus précisément, pour une installation donnée, le dispositif de concentration suivant l'invention permet avantageusement de recréer, systématiquement, à l'entrée du dispositif de gestion, des conditions de débit déterminées, qui correspondent à ses conditions normales de fonctionnement.More specifically, for a given installation, 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.

Ainsi, quelle que soit la capacité de l'installation à traiter, un dispositif de gestion standard peut avantageusement être mis en oeuvre, au bénéfice des coûts.Thus, whatever the capacity of the installation to be treated, a device for standard management can advantageously be implemented, for the benefit of costs.

En outre, en minimisant le débit à recycler sur la canalisation d'entrée de l'échangeur de chaleur, le dispositif de concentration suivant l'invention permet avantageusement de réduire en conséquence la puissance de la pompe normalement nécessaire pour assurer à contre-courant la circulation du flux de retour correspondant.In addition, by minimizing the flow rate to be recycled on the inlet pipe of the heat exchanger, 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.

Les caractéristiques et avantages de l'invention ressortiront d'ailleurs de la description qui va suivre, à titre d'exemple, en référence aux dessins schématiques annexés sur lesquels :

  • la figure 1 est un bloc diagramme d'une installation de gestion suivant l'invention ;
  • la figure 2 est, à échelle supérieure, une vue en coupe longitudinale du dispositif de concentration mis en oeuvre dans cette installation de gestion ;
  • la figure 3 est une autre vue en coupe longitudinale de ce dispositif de concentration, suivant la ligne III-III de la figure 2.
    • The characteristics and advantages of the invention will become apparent from the description which follows, by way of example, with reference to the appended schematic drawings in which:
  • FIG. 1 is a block diagram of a management installation according to the invention;
  • Figure 2 is, on a larger scale, a longitudinal sectional view of the concentration device used in this management installation;
  • FIG. 3 is another view in longitudinal section of this concentration device, along line III-III of FIG. 2.

    • Sur la figure 1 on a schématisé, sous la référence générale 10, un échangeur de chaleur, et, par exemple, un échangeur de chaleur formant condenseur, qui, tel que schématisé par les flèches F1, est traversé par un flux de fluide de refroidissement, en l'espèce de l'eau, à la faveur, d'une part, d'une canalisation d'entrée 11E, et, d'autre part, d'une canalisation de sortie 11S.In Figure 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.

    Un tel échangeur de chaleur 10 étant bien connu par lui-même, et ne relevant pas, en propre, de la présente invention, il ne sera pas décrit ici.Such a heat exchanger 10 being well known in itself, and does not not directly related to the present invention, it will not be described here.

    Il s'agit, en pratique, d'un échangeur de chaleur tubulaire, qui, par exemple, est du type de celui succinctement décrit dans le brevet français No 94 02109 mentionné ci-dessus.In practice, this is a tubular heat exchanger, which, by example, is of the type succinctly described in the French patent No 94 02109 mentioned above.

    Dans la forme de mise en oeuvre représentée, des moyens de filtration 12 sont interposés sur la canalisation d'entrée 11E, à la faveur d'une manchette 13.In the embodiment shown, filtration means 12 are interposed on the inlet pipe 11E, thanks to a cuff 13.

    Ces moyens de filtration 12, qui ne sont pas impératifs, ne relevant pas non plus de la présente invention, ils ne seront pas non plus décrits ici.These filtration means 12, which are not imperative, do not fall under neither of the present invention, they will not be described here either.

    Il s'agit par exemple de moyens de filtration du type de ceux décrits dans le brevet français déposé le 16 janvier 1987 sous le No 87 00430 et publié sous le No 2 609 644.These are, for example, filtration means of the type described in the French patent filed on January 16, 1987 under No. 87 00430 and published under No. 2 609 644.

    De manière connue en soi, également, des éléments solides de nettoyage 15 sont susceptibles d'être mis en circulation permanente dans l'échangeur de chaleur 10, pour le nettoyage en continu de celui-ci.In a manner known per se, also, solid elements of cleaning 15 are likely to be permanently circulated in the heat exchanger 10, for continuous cleaning thereof.

    Il s'agit, en pratique, de boules en caoutchouc mousse, dont le diamètre est légèrement supérieur à celui des tubes de l'échangeur de chaleur 10, et dont la densité, à l'état imprégné, est similaire à celle de l'eau.In practice, these are foam rubber balls, the diameter of which is slightly higher than that of the tubes of the heat exchanger 10, and whose density, in the impregnated state, is similar to that of water.

    Il convient d'assurer une gestion de ces éléments solides de nettoyage 15, c'est-à-dire non seulement d'en assurer une circulation effective dans l'échangeur de chaleur 10, mais également, d'en contrôler le nombre et les dimensions.These solid cleaning elements must be managed 15, that is to say not only to ensure its effective circulation in the heat exchanger 10, but also to control the number and the dimensions.

    De manière connue en soi, ces éléments solides de nettoyage 15 sont systématiquement injectés dans la canalisation d'entrée 11E, en aval des moyens de filtration 12, pour être entraínés par le flux entrant.In a manner known per se, 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.

    De manière connue en soi, également, on interpose, corollairement, sur la canalisation de sortie 11S, à la faveur d'une manchette 16, des moyens d'interception 17 propres à la retenue des éléments solides de nettoyage 15 en circulation, et, par une installation de gestion 18 détaillée ci-après, on recycle, vers la canalisation d'entrée 11E, les éléments solides de nettoyage 15 retenus par ces moyens d'interception 17.In a manner known per se, also, we interpose, as a corollary, on the outlet pipe 11S, by means of a sleeve 16, means interception 17 specific to the retention of solid cleaning elements 15 in circulation, and, by a management installation 18 detailed below, we recycle, towards the inlet pipe 11E, the solid cleaning elements 15 retained by these means of interception 17.

    Ne relevant pas, par eux-mêmes, de la présente invention, ces moyens d'interception 17 ne seront pas décrits en détail ici.Not pertaining, by themselves, to the present invention, these means interception 17 will not be described in detail here.

    Par exemple, il s'agit de moyens de filtration du type de ceux faisant l'objet du brevet français No 94 02109 mentionné ci-dessus.For example, these are filtration means of the type of those making the subject of French patent No 94 02109 mentioned above.

    Il suffira donc d'indiquer qu'ils comportent, d'une part, une roue 20, qui, fermant transversalement la manchette 16, présente, radialement, entre son axe et sa périphérie, un panneau filtrant 21, et qui, sous le contrôle de moyens de commande non représentés, est montée rotative autour de son axe, et, d'autre part, deux trompes 22A, 22R, qui, disposées chacune respectivement de part et d'autre de la roue 20, l'une en aval dans le sens du flux sortant par la canalisation de sortie 11S, l'autre en amont, sont établies en correspondance l'une avec l'autre, et sont l'une et l'autre tournées vers le panneau filtrant 21 de la roue 20.It will therefore suffice to indicate that they comprise, on the one hand, 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.

    De manière connue en soi, enfin, l'installation de gestion 18 comporte des moyens de circulation 24, qui sont propres à engendrer, localement, à travers les moyens d'interception 17, au droit des trompes 22A, 22R, une circulation à contre-courant, et qui comportent, eux-mêmes, pour ce faire, d'une part, une conduite d'arrivée 25A, établie entre la canalisation d'entrée 11E de l'échangeur de chaleur 10 et sa canalisation de sortie 11S, cette conduite d'arrivée 25A se raccordant plus précisément à la trompe 22A disposée en aval des moyens d'interception 17, et, d'autre part, une conduite de retour 25R, qui, raccordée, elle, à la trompe 22R située en amont des moyens d'interception 17, recycle vers la canalisation d'entrée 11E de l'échangeur de chaleur 10 un flux de retour contenant les éléments solides de nettoyage 15 retenus par ces moyens d'interception 17, et sur laquelle est disposé un dispositif de gestion 26 de ces éléments solides de nettoyage 15, en vue, notamment, d'un contrôle du nombre de ceux-ci, de l'élimination de ceux dont les dimensions ne sont plus suffisantes, et d'un réapprovisionnement en éléments solides de nettoyage 15 neufs.In a manner known per se, finally, 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.

    Ce dispositif de gestion 26 ne relevant pas de la présente invention, il ne sera pas décrit ici.This management device 26 does not fall under the present invention, it does not will not be described here.

    Suivant l'invention, on interpose, entre les moyens d'interception 17 et le dispositif de gestion 26, un dispositif de concentration 27 apte à relever la concentration du flux de retour correspondant en éléments solides de nettoyage 15.According to the invention, there is interposed between the interception means 17 and the management device 26, a concentration device 27 able to take up the concentration of the corresponding return flow in solid elements of cleaning 15.

    Autrement dit, sur la conduite de retour 25R des moyens de circulation 24 se trouve interposé, suivant l'invention, entre les moyens d'interception 17 et le dispositif de gestion 26, un dispositif de concentration 27 divisant le flux de retour correspondant en deux parties, à savoir, tel que schématisé par les flèches P1, P2 sur la figure 1, une partie P1, ou partie principale, qui contient normalement tous les éléments solides de nettoyage 15 en circulation, et qui est dirigée vers le dispositif de gestion 26, et une deuxième partie P2, ou partie dérivée, qui est normalement dépourvue de tout élément solide de nettoyage 15, et qui est écartée de ce dispositif de gestion 26.In other words, on the return line 25R of the means of circulation 24 is interposed, according to the invention, between the interception means 17 and the management device 26, 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.

    En pratique, la partie principale P1 correspond à une minorité du flux de retour traité, et la partie dérivée P2 à une majorité de celui-ci.In practice, the main part P1 corresponds to a minority of the flow of back processed, and the derivative part P2 to a majority of it.

    Autrement dit, la partie principale P1 est à relativement petit débit, et la partie dérivée P2 à relativement grand débit.In other words, the main part P1 is at relatively low speed, and the derivative part P2 at relatively high speed.

    Dans la forme de mise en oeuvre représentée, l'installation de gestion 18 comporte une conduite de recyclage 28 qui dirige la partie dérivée P2 du flux de retour sur la canalisation de sortie 11S de l'échangeur de chaleur 10.In the embodiment shown, 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.

    Plus précisément, dans cette forme de mise en oeuvre, cette conduite de recyclage 28 se raccorde à la conduite d'arrivée 25A.More precisely, in this form of implementation, this conduct of recycling 28 is connected to the supply line 25A.

    Plus précisément, encore, les moyens de circulation 24 comportant une pompe 30 sur cette conduite d'arrivée 25A, la conduite de recyclage 28 se raccorde à cette conduite d'arrivée 25A en amont de cette pompe 30.More precisely, again, 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.

    Dans la forme de mise en oeuvre représentée, il est prévu, sur la conduite de retour 25R, en amont du dispositif de concentration 27, une vanne 31, et il est prévu, successivement, en aval de ce dispositif de concentration 27, sur la conduite de recyclage 28, un clapet anti-retour 32 et un diaphragme 33.In the embodiment shown, provision is made, on the return line 25R, upstream of the concentration device 27, a valve 31, and provision is made, successively, downstream of this concentration device 27, on the recycling line 28, a non-return valve 32 and a diaphragm 33.

    De même, deux vannes 34, 35 sont prévues sur la conduite d'arrivée 25A, l'une en amont de la pompe 30, l'autre en aval de celle-ci, pour une isolation éventuelle de cette pompe 30, et, conjointement, cette conduite d'arrivée 25A est doublée, localement, par une conduite de dérivation 37, pour une mise hors circuit de la pompe 30 si désiré.Similarly, two 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.

    Préférentiellement, et tel que représenté, sur cette conduite de dérivation 37 intervient un clapet anti-retour 38.Preferably, and as shown, on this bypass pipe 37 operates a non-return valve 38.

    Outre la vanne 31, qui intervient en amont du dispositif de concentration 27, la conduite de retour 25R est contrôlée, dans la forme de mise en oeuvre représentée, par une vanne 39, qui intervient en aval du dispositif de gestion 26.In addition to the valve 31, which operates upstream of the concentration device 27, the return line 25R is checked, in the form of implementation represented by a valve 39, which operates downstream of the management device 26.

    Préférentiellement, et tel que représenté, la conduite de retour 25R dessert, dans la manchette 13, des tuyères 40, qui assurent l'injection, dans le flux entrant, des éléments solides de nettoyage 15 à remettre ou à mettre en circulation dans celui-ci, et qui, préférentiellement, sont orientées à contre-courant.Preferably, and as shown, 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.

    Dans la forme de mise en oeuvre représentée, une conduite d'évacuation 42, contrôlée par une vanne 43, relie la conduite de retour 25R à la canalisation de sortie 11S de l'échangeur de chaleur 10, en se raccordant à cette conduite de retour 25R entre la trompe 22R dont elle est issue et le dispositif de concentration 27, pour un éventuel retrait des éléments solides de nettoyage 15.In the embodiment shown, a discharge pipe 42, controlled by a valve 43, connects the return pipe 25R 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.

    De même, dans cette forme de mise en oeuvre, une conduite d'évacuation 44, contrôlée par une vanne 45, relie les moyens de filtration 12 à la canalisation de sortie 11S de l'échangeur de chaleur 10, pour une évacuation des débris retenus par ces moyens de filtration 12.Likewise, in this form of implementation, a pipe discharge 44, controlled by a valve 45, connects the filtration means 12 to the outlet pipe 11S of the heat exchanger 10, for evacuation debris retained by these filtration means 12.

    Enfin, le dispositif de concentration 27 suivant l'invention est, préférentiellement, et tel que représenté, un filtre comportant au moins une grille 46 à l'extrémité aval de laquelle intervient, comme schématisé sur les figures 2 et 3, une chambre à tourbillons 47.Finally, the concentration device 27 according to the invention 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.

    Une telle chambre à tourbillons 47 étant bien connue par elle-même, et ne relevant pas en propre de la présente invention, elle ne sera pas décrite ici.Such a vortex chamber 47 being well known in itself, and not directly pertaining to the present invention, it will not be described here.

    Dans la forme de mise en oeuvre représentée, le dispositif de concentration 27 comporte, en V, deux grilles 46, qui convergent l'une avec l'autre en direction de la chambre à tourbillons 47.In the embodiment shown, the device concentration 27 has, in V, two grids 46, which converge one with the other towards the vortex chamber 47.

    Ces grilles 46 sont par exemple constituées de barreaux 48 dont l'écartement est inférieur au diamètre des éléments solides de nettoyage 15.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.

    Préférentiellement, les grilles 46 sont fixes.Preferably, the grids 46 are fixed.

    Conjointement, et tel que schématisé en traits interrompus sur la figure 1, il est alors prévu une conduite de lavage 49, qui, contrôlée par une vanne 50, relie le refoulement de la pompe 30 à l'extrémité aval du dispositif de concentration 27, pour une circulation à contre-courant à travers les grilles 46 que comporte celui-ci.Jointly, and as shown schematically in broken lines in the figure 1, 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.

    En service, les éléments solides de nettoyage 15 traversent en continu l'échangeur de chaleur 10, et, retenus par les moyens d'interception 17 à la sortie de celui-ci, ils sont recyclés à son entrée après, successivement, leur passage dans le dispositif de concentration 27, qui les sépare de la plus grande partie du débit correspondant, et leur passage dans le dispositif de gestion 26, qui en assure le traitement.In use, 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.

    Grâce au dispositif de concentration 27, les conditions de débit à l'entrée du dispositif de gestion 26 sont bien déterminées, et elles correspondent aux conditions normales de fonctionnement de ce dispositif de gestion 26.Thanks to 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.

    Si désiré, la conduite d'évacuation 42 permet le retrait des éléments solides de nettoyage 15.If desired, the evacuation pipe 42 allows the removal of the elements cleaning solids 15.

    Préférentiellement, et tel que schématisé en traits interrompus sur la figure 1, il est alors interposé, sur cette conduite d'évacuation 42, un collecteur 52 propre au recueil de ces éléments solides de nettoyage 15, pour éviter que, échappant définitivement à l'installation de gestion 18, ceux-ci ne soient intempestivement évacués à l'égout.Preferably, and as shown in dashed lines on the Figure 1, 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.

    Claims (8)

    1. A method for the management of solid cleaning elements (15) placed in circulation in a heat exchanger (10) for cleaning it, of the kind in which, interception means (17) adapted to catch the solid cleaning elements (15) in circulation being inserted on the outlet duct (11S) of the heat exchanger (10), the solid cleaning elements (15) caught by the interception means (17) are recycled to the inlet duct (11E), by passing these solid cleaning elements (15) through a management device (26), there is placed between the interception means (17) and the management device (26) a concentration device (27) dividing the return flow into two parts (P1, P2), a first part (P1) containing all the solid cleaning elements and a second part (P2) being free of any solid cleaning element and being adapted to increase the concentration of a main part (P1) of the corresponding return flow in solid cleaning elements (15), the concentration device (27) being adapted to make the conditions of flow rate at the inlet of the management device (26) correspond to its normal conditions of operation, and according to which the diverted part (P2) of the return flow is directed to the outlet duct (11S) of the heat exchanger (10) by a delivery pipe (25A) provided between the inlet duct (11E) and outlet duct (11S).
    2. A management installation for solid cleaning elements (15) circulating in a heat exchanger (10) for cleaning it, of the kind comprising interception means (17) which are adapted to catch the solid cleaning elements (15) in circulation and which are inserted on the outlet duct (11S) of the heat exchanger (10), a return pipe (25R), which recycles a retum flow containing the solid cleaning elements (15) caught by the interception means (17) to the inlet duct (11E) of the heat exchanger (10), and on that return pipe (25R), a device (26) for management of these solid cleaning elements (15), a concentration device (27) being placed between the interception means (17) and the management device (26), on the retum pipe (25R), the concentration device (27) dividing the corresponding return flow into two parts (P1, P2), i.e. a first part (P1), or main part, which contains all the solid cleaning elements (15), and which is directed to the management device (26), and a second part (P2) or diverted part, which is normally free of any solid cleaning element (15), and which is separated from the management device (26), the return pipe (25R) belonging to circulation means (24) which are adapted to create, locally, across the interception means (17), a reverse circulation, a recycling pipe (28) directing the diverted part (P2) of the retum flow to the outlet duct (11S) of the heat exchanger (10), the circulation means (24) comprising a delivery pipe (25A) provided between the inlet duct (11E) of the heat exchanger (10) and its outlet duct (11S), the recycling pipe (28) being connected to this delivery pipe (25A).
    3. A management installation according to claim 2, characterized in that the circulation means (24) comprise a pump (30) on the delivery pipe (25A), the recycling pipe (28) being connected to the delivery pipe (25A) upstream of that pump.
    4. A management installation according to any one of claims 2 or 3, characterized in that the concentration device (27) is a filter comprising at least one grid (46) at the upstream end of which an eddy chamber (47) operates.
    5. A management installation according to claim 4, characterized in that the grid (46) is fixed.
    6. A management installation according to claims 3 and 5 taken together, characterized in that a washing pipe (49), controlled by a duct (50), directs the backflow of the pump (30) to the upstream extremity of the concentration device (27), for reverse circulation across the grid (46) that it comprises.
    7. A management installation according to any one of claims 4 to 6, characterized in that the concentration device (27) comprises two grids (46) in a V.
    8. A management installation according to any one of claims 2 to 7, characterized in that, an extraction pipe (42) being provided between the return pipe (25R) and the outlet duct (11S) of the heat exchanger (10), a collector (52) is provided on that extraction pipe (42).
    EP98941555A 1998-08-06 1998-08-06 Method and installation for managing solid elements circulating in a heat exchanger for cleaning the latter Expired - Lifetime EP1102956B1 (en)

    Applications Claiming Priority (1)

    Application Number Priority Date Filing Date Title
    PCT/FR1998/001756 WO2000008404A1 (en) 1998-08-06 1998-08-06 Method and installation for managing solid elements circulating in a heat exchanger for cleaning the latter

    Publications (2)

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

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP98941555A Expired - Lifetime EP1102956B1 (en) 1998-08-06 1998-08-06 Method and installation for managing solid elements circulating in a heat exchanger for cleaning the latter

    Country Status (4)

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    EP (1) EP1102956B1 (en)
    JP (1) JP4090199B2 (en)
    DE (1) DE19883011B4 (en)
    WO (1) WO2000008404A1 (en)

    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 (en) * 1979-11-06 1981-05-08 Taprogge Reinigungsanlagen Power-station condenser cleaning equipment - has hydro-cyclonic strainer-separator to keep cleaning balls from fibrous material
    KR860000855B1 (en) * 1980-06-30 1986-07-09 가부시기가이샤 히다찌 세이사꾸쇼 Cleaning apparatus for heat exchange tube
    FR2495028A1 (en) * 1980-12-01 1982-06-04 Alsthom Atlantique CLEANING ELEMENT AND CLEANING INSTALLATION USING THE SAME
    FR2609644B1 (en) 1987-01-16 1991-01-04 Beaudrey & Cie SELF-CLEANING FILTER TO INSERT ON A PRESSURE PIPE
    FR2634672B1 (en) * 1988-07-27 1990-11-09 Technos Cie IMPROVEMENTS ON DEVICES FOR REMOVING WASTE BALLS FROM TUBULAR BEAM CLEANING PLANTS
    DE4029196A1 (en) * 1990-09-14 1992-03-19 Taprogge Gmbh METHOD FOR MEASURING THE CLEANING EFFECTIVENESS OF SPONGE RUBBER BALLS IN HEAT EXCHANGERS, AND METHOD AND SYSTEM FOR INDIRECTLY MEASURING THE HEAT TRANSFER ON CONDENSER TUBES
    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 (en) * 1994-02-24 1996-07-12 Beaudrey & Cie Interception device for solid elements circulating in a heat exchanger for cleaning the latter.
    FR2766915B1 (en) * 1997-07-31 1999-10-08 Beaudrey & Cie METHOD FOR THE MANAGEMENT OF SOLID ELEMENTS CIRCULATED IN A HEAT EXCHANGER FOR CLEANING THE SAME, AND CORRESPONDING INSTALLATION

    Also Published As

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

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