EP0631103B1 - Installation de nettoyage de tubes par circulation de boules spongieuses - Google Patents
Installation de nettoyage de tubes par circulation de boules spongieuses Download PDFInfo
- Publication number
- EP0631103B1 EP0631103B1 EP94401382A EP94401382A EP0631103B1 EP 0631103 B1 EP0631103 B1 EP 0631103B1 EP 94401382 A EP94401382 A EP 94401382A EP 94401382 A EP94401382 A EP 94401382A EP 0631103 B1 EP0631103 B1 EP 0631103B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- balls
- tank
- water
- valves
- valve
- 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
Links
- 238000004140 cleaning Methods 0.000 title claims description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 62
- 238000005470 impregnation Methods 0.000 claims description 18
- 238000009434 installation Methods 0.000 claims description 18
- 238000004891 communication Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 239000012528 membrane Substances 0.000 description 19
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000010926 purge Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 241001080024 Telles Species 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000021183 entrée Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
-
- 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
- This impregnation is to purge the air contained in the open cells of the structure spongy balls in order to give these balls a apparent density very close to that of water: if the air in the balls was not purged, the balls would be lighter than water and they would tend to float and clean only the upper part of the generally horizontal tubes of the condenser or the like.
- the impregnation of the balls is most often done manually by kneading the balls under water before their injection into the closed cleaning circuit including the tubes to be cleaned.
- a device for impregnating sponge balls intended for cleaning the tubes of a condenser or the like comprising an interposed reservoir between first and second associated valves respectively to a water intake pipe and to a water evacuation pipe, a fitting fitted with a third valve connecting the top of the tank to a source of new cleaning balls, a mesh grid too small to pass the balls arranged at inside the tank so as to reserve at the top of this one a room inaccessible to the balls, a pipe equipped with a fourth valve connecting said chamber to a evacuation and a device capable of generating a depression in this room, this generating device of vacuum being a vacuum pump.
- the invention relates generally to installations cleaning tubes above defined and more particularly, but not exclusively, the processes and water impregnation devices for cleaning balls used by these facilities.
- the device for impregnating sponge balls intended for cleaning the tubes of a condenser or the like comprises a reservoir interposed between a first and a second valves associated respectively with a pipe water intake and a water evacuation pipe, a fitting with a third valve connecting the top from the tank to a source of new cleaning balls, a mesh grid too small to let the balls arranged inside the tank so that reserve a room at the top of this room inaccessible to balls, a pipe fitted with a fourth valve connecting said chamber to an evacuation and a clean device to cause depression in this room, and it's essentially characterized in that the device vacuum generator consists of a cylinder piston with one of the two compartments separated by the piston communicates with the chamber in such a way that each piston goes back and forth successively generates an increase of a quantity well determined from the volume defined by the interior of the tank and through the spaces that communicate with this interior, when the above four serving valves of the tank are closed and then a cancellation of this increase.
- impregnation processes implementing the above devices they are characterized according to the invention by the following steps: the first two valves being closed and the other two open, we introduce in the tank a load of new balls through the third valve; then, the second and the third valves being closed and the other two open, we admit water in the tank until full in water; then, all of the four valves being closed, the piston is actuated in the direction which corresponds to an increase in the volume in communication with the inside of the tank, which subjects this volume to a depression by emptying at least partially the balls of air they contain, air that is collected in the upper chamber of the tank and the capacity that communicates with this room; after what the first and fourth valves are opened so that refill all the volumes considered with water, which impregnates the balls at least partially with water emptied of air and the piston or the like is actuated in the direction reverse of the previous one to put it back in its position initial, the cycle of the two steps defined above which operate the piston back and forth can be renewed one or more times.
- 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.
- FIGS 1 to 3 of these drawings show schematically a device, established in accordance with the invention, allowing water balls to be impregnated cleaning, this device being mounted in respectively three different operating phases.
- Figure 4 schematically shows an installation cleaning balls equipped with such a device.
- Figure 5 shows schematically, on the one hand, a preferred construction method proposed in accordance with the invention for the impregnation device and, on the other share, the preferred association of this device with other accessories known per se.
- the balls 1 to be impregnated with water are balls spongy rubber with open porosity.
- the device shown in Figures 1 to 3 includes a tank 2 served near its base by a water inlet pipe 3 fitted with a first valve 4 and, near its top, by a pipe water outlet 5 fitted with a second valve 6.
- the top of the tank 2 is connected, through a third valve 7, to a hopper 8 for receiving balls 1 new.
- tank 2 The upper portion of tank 2 is crossed by a horizontal grid 9 which delimits above it an enclosure 10.
- This enclosure is itself crossed by a vertical corridor delimited laterally by a grid cylindrical 11 connecting the hopper connection 8, fitted with valve 7 with the inside of the tank 2.
- the meshes of the mesh elements 9 and 11 are small enough that they cannot be crossed by balls 1 and large enough so that none only negligible pressure drop is suffered by water as it passes through these meshes.
- a float 12 constituted for example by a hollow ball filled with air, is arranged, in a structure light guide 13 constituted in particular by metal rods, just below the mouth bottom of the screened corridor 11 so that free this mouthpiece for its normal rest position illustrated in Figure 1 and instead close this mouthpiece for its high position shown on the Figures 2 and 3.
- This sealing prevents any rise of balls in lane 11 during the impregnation process in water, balls whose impregnation with water could then be compromised.
- Enclosure 10 is atmospheric or more precisely to an evacuation pipe, by a pipe 14 fitted with a fourth valve 15.
- a jack 17 comprising here a cylinder 18 and a piston 19 with rod 20 is put in communication with the tank 2 as follows: one A of the two chambers A and B, of cylinder 18, separated by the piston 19, is directly connected to the portion of the pipeline 14 which is located between the tank 2 and the valve 15.
- tank 2 is empty in this sense that it contains neither water nor ball, and the valves 4, 6 and 23 are closed.
- the higher level of the ball load as well introduced must not exceed, inside the tank 2, that of the base of the float 12.
- valve 4 is opened, which admits a new volume of water inside tank 2, volume which permeates the balls 1 at least partially emptied of their initial air.
- valve 15 is opened to expel the air from the circuit and make possible a full refill water capacities.
- the impregnation of the balls in water is incomplete if the cylinder capacity, i.e. the volume of air or water displaceable in chamber A when of each complete back-and-forth movement of the piston 19, is insufficient, relative to the volume of water with which one wishes to impregnate balls.
- the impregnation of these balls may require more than two successive cycles.
- the number of cycles required can be determined as follows.
- the pressure P is less than 0.2 bar so that the balls are sufficiently impregnated, that is to say that their apparent density is sufficiently close to that of the water.
- agitating means can be provided in or on hopper 8 to ensure that the balls descend by simple gravity into the airlock 26 upon opening the upper drawer 24, which opening can be controlled by closing the lower drawer 25.
- Figure 5 shows in its right part another construction of the above impregnating device described.
- the structure 13 for supporting and guiding the float 12 is here supported by a grid 16 which crosses the interior of tank 2 a little above the membrane 29.
- This grid 16 like grid 9, is arranged so that it cannot be crossed by the balls.
- the tubes 38 in question which form a bundle horizontal, are supplied with cold water from a line 39 and the heated water coming out of these tubes is evacuated through a pipe 40.
- This pipe 40 is equipped with a device to grids 41 for collecting the cleaning balls and the recycling piping 37 is itself fitted with a circulation pump 42, an airlock 43 used to collect the balls when we want to stop their circulation, then, at its downstream end, an injection nozzle 44 of the balls opening into the intake pipe 39.
- valve 4 allowing water to enter the device impregnator as well as the outlet pipe 5 of this device and that its loading hopper 8 associated with the corresponding valve 7.
- the impregnating device above is further associated with a sorter of balls of the type which is the subject of document US-A-4 974 662 as well as a ball counter like those currently known.
- the assembly thus formed ensures a fully automatic operation of the cleaning considered.
- the sorter covered by the above patent allows permanently remove used balls from the circuit, the diameter has become too small.
- the ball counter As for the ball counter, it measures continuously the number of balls remaining in circulation: when this number of balls becomes insufficient for ensure effective cleaning, i.e. when the number of missing balls reaches a preset threshold, said counter emits a signal indicating that a charge of new balls must be reinjected into the circuit cleaning.
- the impregnation device described above is sized according to the desired importance for this load of new balls and it allows to reinject this load in the circuit as soon as the counter gives it the signal.
- the ball counter mounted on the recycling 37 is designated by reference 45.
- Sorter 46 is mounted on the same pipe just downstream of counter 45.
- Worn balls whose diameter has become too large small are diverted by a line 47 towards a collector of worn balls 48 whose base, in the shape of a truncated cone or the like, communicates with a valve 49 for draining worn balls.
- the manifold 48 is connected to the pipe water inlet 3 above, fitted with valve 4.
- a grid 50 mounted in this collector prevents that the used balls can have access to this line 3.
- a gate valve 51 mounted on said pipe 3 makes it possible to fine-tune the selection made by sorter 46.
- the assembly is then ready to accomplish again following the above operations which automatically allow to evacuate a given load of used balls and to introduce an equivalent load of new balls after impregnate them with water.
- This device has significant advantages by compared to those previously known and in particular the following.
- This hopper can be significant, filling it into balls does not require only two or three interventions per year, which represents a significant labor saving by compared to current installations for which impregnation of the balls to be injected must be carried out manually several times a month.
- the possible automation of the whole of the installation allows the cleaning of the condenser or the like a high degree of safety since, with this installation, we are sure that the balls in circulation ensuring cleaning are at all times, on the one hand, in sufficient number, and on the other hand, in a low wear condition for which cleaning efficiency is high.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Cleaning In General (AREA)
- Cleaning By Liquid Or Steam (AREA)
Description
- si l'on appelle V le volume de la cylindrée du vérin et v le volume, à la pression atmosphérique, de l'air contenu dans les cellules de la charge de boules introduites dans le réservoir, on donne à V une valeur supérieure à 4v,
- le vérin est constitué par une pompe à membrane dont l'organe mobile constitue le fond du réservoir,
- la chambre haute intérieure au réservoir est traversée par un couloir vertical délimité latéralement par une grille, couloir prolongeant vers le bas le raccord du réservoir à la troisième vanne et un flotteur est disposé au-dessous de ce couloir de façon à empêcher les boules contenues dans le réservoir de remonter dans ledit couloir,
- le dispositif comprenant le réservoir, le vérin et les tuyauteries et vannes de desserte, est monté en dérivation sur la tuyauterie de recyclage des boules de nettoyage des tubes d'un condenseur ou analogue, tuyauterie qui s'étend de la sortie à l'entrée de ce condenseur,
- dans une installation selon l'alinéa précédent, le dispositif comprenant le réservoir, le vérin et les tuyauteries et vannes de desserte est associé à un compteur de boules et à un trieur de boules de façon telle que toute extraction, hors de l'installation, d'une charge de boules usées soit compensée par l'introduction dans cette installation d'une charge équivalente de boules neuves imprégnées d'eau, et le fonctionnement de l'ensemble est automatisé.
- une conduite de purge 22 raccordée à la base du réservoir 2 et équipée d'une vanne 23,
- entre la vanne 7 et la base de la trémie 8, deux mécanismes à tiroir 24 et 25 propres à délimiter entre eux, lorsqu'ils se trouvent en position de fermeture, un espace 26 de volume bien déterminé, ce qui peut servir au dosage précis des charges de boules introduites dans le réservoir 2,
- une poignée 27 terminant la tige de piston 20 du vérin 17 et permettant les manoeuvres de cette tige à la main.
- ici, le vérin est constitué par une pompe à membrane 28 et la membrane déformable 29 de cette pompe constitue elle-même le fond du réservoir 2,
- une chambre 30 disposée au-dessous de cette membrane 29 est mise à l'air libre en 31,
- la membrane 29 est reliée par une tige 32 qui traverse de manière étanche le fond de la chambre 30 à une seconde membrane souple 33 identique qui divise un boítier 34 inférieur en deux compartiments C et D susceptibles d'être reliés isolément et alternativement à une source d'air comprimé et à l'atmosphère, respectivement à travers deux raccords 35 et 36.
- fermeture des vannes 52, 6 et 15 et ouverture des vannes 49 et 7, ce qui évacue les boules usées recueillies dans le collecteur 48, à travers la vanne 49, en même temps que l'eau qui était contenue dans ledit collecteur 48 et dans le réservoir 2,
- fermeture du tiroir supérieur 24 et ouverture du tiroir inférieur 25, ce qui déverse dans le réservoir 2 la charge de boules contenues dans le sas 26, puis fermeture des vannes 7, 49 et du tiroir inférieur 25,
- ouverture des vannes 52 et 15 pour laisser le collecteur 48 et le réservoir 2 se remplir d'eau,
- fermeture des vannes 4 et 15, puis injection d'air comprimé dans la chambre C pour faire descendre la membrane 29 afin de créer un vide dans le réservoir 2 et d'extraire l'air des boules,
- ouverture de la vanne 4 pour admettre l'eau dans le réservoir 2 et imprégner ainsi d'eau les boules, puis ouverture de la vanne 15 pour évacuer l'air accumulé dans l'enceinte 10,
- injection d'air comprimé dans la chambre D et mise à l'air libre de la chambre C pour ramener la membrane 29 en sa position haute,
- répétition éventuelle au moins une fois du cycle d'imprégnation mettant en oeuvre le va-et-vient de la membrane 29,
- ouverture de la vanne 6 pour injecter les boules ainsi imprégnées d'eau dans le circuit 37,
- ouverture du tiroir supérieur 24 et actionnement de l'agitateur des boules contenues dans la trémie 8 pour remplir à nouveau de boules le sas 26.
Claims (7)
- Dispositif d'imprégnation des boules spongieuses destinées au nettoyage des tubes d'un condenseur ou analogue, comprenant un réservoir (2) interposé entre une première (4) et une seconde (6) vannes associées respectivement à une conduite d'admission en eau (3) et à une conduite d'évacuation d'eau (5), un raccord muni d'une troisième vanne (7) reliant le sommet du réservoir à une source (8) de boules neuves de nettoyage (1), une grille (9) à mailles trop petites pour laisser passer les boules disposée à l'intérieur du réservoir de façon à réserver en haut de celui-ci une chambre (10) inaccessible aux boules, une conduite équipée d'une quatrième vanne (15) reliant ladite chambre à une évacuation et un dispositif propre à engendrer une dépression dans cette chambre, caractérisé en ce que le dispositif générateur de dépression est constitué par un vérin à piston (17, 28) dont l'un des deux compartiments séparés par le piston (19,29) communique avec la chambre (10), de façon telle que chaque va-et-vient du piston engendre successivement une augmentation d'une quantité bien déterminée du volume défini par l'intérieur du réservoir et par les espaces qui communiquent avec cet intérieur, lorsque les quatre vannes ci-dessus de desserte du réservoir sont fermées, puis une annulation de cette augmentation.
- Dispositif selon la revendication 1, caractérisé en ce que le vérin est constitué par une pompe à membrane dont l'organe mobile (29) constitue le fond du réservoir (2).
- Dispositif selon l'une quelconque des revendications 1 et 2, caractérisé en ce que la chambre haute (10) intérieure au réservoir (2) est traversée par un couloir vertical délimité latéralement par une grille (11), couloir prolongeant vers le bas le raccord du réservoir à la troisième vanne (7) et en ce qu'un flotteur (12) est disposé au-dessous de ce couloir de façon à empêcher les boules contenues dans le réservoir de remonter dans ledit couloir.
- Installation de nettoyage des tubes d'un condenseur ou analogue à l'aide de boules, caractérisée en ce qu'elle comprend le dispositif selon l'une quelconque des revendications 1 à 3, comportant le réservoir (2), le vérin (17,29) et leurs tuyauteries et vannes de desserte, monté en dérivation sur la tuyauterie de recyclage (37) des boules, tuyauterie qui s'étend de la sortie à l'entrée du condenseur.
- Installation de nettoyage selon la revendication 4, caractérisée en ce que le dispositif comprenant le réservoir (2), le vérin (17,28) et leurs tuyauteries et vannes de desserte est associé à un compteur de boules (45) et à un trieur de boules (46) de façon telle que toute extraction, hors de l'installation, d'une charge de boules usées soit compensée par l'introduction dans cette installation d'une charge équivalente de boules neuves imprégnées d'eau, et en ce que le fonctionnement de l'ensemble est automatisé.
- Procédé d'imprégnation mettant en oeuvre le dispositif selon l'une quelconque des revendications 1 à 3, caractérisé par la suite des étapes suivantes : les deux premières vannes (4,6) étant fermées et les deux autres (7,15) ouvertes, on introduit dans le réservoir (2) une charge de boules neuves (1) à travers la troisième vanne (7) ; puis, la deuxième (6) et la troisième (7) vannes étant fermées et les deux autres (4,15) ouvertes, on admet de l'eau dans le réservoir jusqu'à son remplissage total en eau ; ensuite, l'ensemble des quatre vannes étant fermées, on actionne le piston (19,29) dans le sens qui correspond à une augmentation du volume en communication avec l'intérieur du réservoir, ce qui soumet ce volume à une dépression en vidant au moins partiellement les boules de l'air qu'elles contiennent, air qui est recueilli dans la chambre haute du réservoir et la capacité qui communique avec cette chambre ; après quoi l'on ouvre la première (4) et la quatrième vannes (15) de façon à remplir à nouveau d'eau l'ensemble des volumes considérés, ce qui imprègne d'eau les boules au moins partiellement vidées d'air et on actionne le piston ou analogue en sens inverse du précédent pour le replacer en sa position initiale, le cycle des deux étapes ci-dessus définies qui mettent en oeuvre un va-et-vient du piston pouvant être renouvelé une ou plusieurs fois.
- Procédé d'imprégnation selon la revendication 6, caractérisé en ce que, si l'on appelle V le volume de la cylindrée du vérin et v le volume, à la pression atmosphérique, de l'air contenu dans les cellules de la charge de boules introduites dans le réservoir, on donne à V une valeur supérieure à 4v.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9307547 | 1993-06-22 | ||
FR9307547A FR2706788B1 (fr) | 1993-06-22 | 1993-06-22 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0631103A2 EP0631103A2 (fr) | 1994-12-28 |
EP0631103A3 EP0631103A3 (fr) | 1995-08-09 |
EP0631103B1 true EP0631103B1 (fr) | 1998-05-06 |
Family
ID=9448407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94401382A Expired - Lifetime EP0631103B1 (fr) | 1993-06-22 | 1994-06-20 | Installation de nettoyage de tubes par circulation de boules spongieuses |
Country Status (9)
Country | Link |
---|---|
US (1) | US5482111A (fr) |
EP (1) | EP0631103B1 (fr) |
JP (1) | JP2911022B2 (fr) |
KR (1) | KR100246112B1 (fr) |
CA (1) | CA2126282C (fr) |
DE (1) | DE69410018T2 (fr) |
ES (1) | ES2115173T3 (fr) |
FR (1) | FR2706788B1 (fr) |
TW (1) | TW295256U (fr) |
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FR2825794A1 (fr) * | 2001-06-12 | 2002-12-13 | Beaudrey C S | Dispositif pour le mouillage d'elements de nettoyage pour echangeur de chaleur tubulaire, et echangeur de chaleur tubulaire equipe d'un tel dispositif |
EP1794534B1 (fr) * | 2004-07-16 | 2011-08-17 | Hydroactive Veloball International | Systeme et appareil pour le nettoyage non commande de systemes d'echange de chaleur tubulaires |
SG125150A1 (en) * | 2005-02-17 | 2006-09-29 | Hydroactive Veloball Internat | Device for cleaning tubes |
US7996946B1 (en) * | 2005-11-02 | 2011-08-16 | Bruce Riley | Cleaning projectile verification system |
SG171739A1 (en) | 2009-03-31 | 2011-07-28 | Hydroball Technics Holdings Pte Ltd | Cleaning system for cleaning tubing |
CN103090719B (zh) * | 2013-02-05 | 2014-10-29 | 倪永刚 | 一种水冷冷水机组管壳式冷凝器多功能胶球自动在线清洗装置一体机 |
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CN114111435A (zh) * | 2021-11-22 | 2022-03-01 | 神华国华寿光发电有限责任公司 | 胶球系统 |
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DE3316020C1 (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. |
US4569097A (en) * | 1983-11-23 | 1986-02-11 | Superior I.D. Tube Cleaners Incorporated | Tube cleaners |
JPS61128098A (ja) * | 1984-11-26 | 1986-06-16 | Toshiba Corp | 復水器冷却管洗浄用ボ−ルの含水方法 |
US4984629A (en) * | 1989-09-13 | 1991-01-15 | Water Services Of America, Inc. | Ball collector and filling apparatus for circulating ball cleaning system |
US5176204A (en) * | 1990-12-27 | 1993-01-05 | Balls-Technics Ltd. | Cleaning system for cleaning fluid-conducting tubing |
-
1993
- 1993-06-22 FR FR9307547A patent/FR2706788B1/fr not_active Expired - Fee Related
-
1994
- 1994-06-20 TW TW085200363U patent/TW295256U/zh unknown
- 1994-06-20 CA CA002126282A patent/CA2126282C/fr not_active Expired - Fee Related
- 1994-06-20 ES ES94401382T patent/ES2115173T3/es not_active Expired - Lifetime
- 1994-06-20 DE DE69410018T patent/DE69410018T2/de not_active Expired - Lifetime
- 1994-06-20 EP EP94401382A patent/EP0631103B1/fr not_active Expired - Lifetime
- 1994-06-20 US US08/262,530 patent/US5482111A/en not_active Expired - Lifetime
- 1994-06-21 JP JP6139174A patent/JP2911022B2/ja not_active Expired - Fee Related
- 1994-06-21 KR KR1019940014114A patent/KR100246112B1/ko not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101504263B (zh) * | 2009-03-04 | 2011-11-16 | 沈忠东 | 一种凝汽器胶球清洗装置 |
Also Published As
Publication number | Publication date |
---|---|
EP0631103A3 (fr) | 1995-08-09 |
JPH0755389A (ja) | 1995-03-03 |
DE69410018T2 (de) | 1998-12-17 |
ES2115173T3 (es) | 1998-06-16 |
DE69410018D1 (de) | 1998-06-10 |
US5482111A (en) | 1996-01-09 |
JP2911022B2 (ja) | 1999-06-23 |
TW295256U (en) | 1997-01-01 |
CA2126282A1 (fr) | 1994-12-23 |
KR950000232A (ko) | 1995-01-03 |
FR2706788B1 (fr) | 1995-08-25 |
EP0631103A2 (fr) | 1994-12-28 |
FR2706788A1 (fr) | 1994-12-30 |
CA2126282C (fr) | 2002-08-13 |
KR100246112B1 (ko) | 2000-04-01 |
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