EP0634229B1 - Procédé, assemblage et dispositif pour le nettoyage et revêtement interne d'une tuyauterie - Google Patents

Procédé, assemblage et dispositif pour le nettoyage et revêtement interne d'une tuyauterie Download PDF

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Publication number
EP0634229B1
EP0634229B1 EP94810410A EP94810410A EP0634229B1 EP 0634229 B1 EP0634229 B1 EP 0634229B1 EP 94810410 A EP94810410 A EP 94810410A EP 94810410 A EP94810410 A EP 94810410A EP 0634229 B1 EP0634229 B1 EP 0634229B1
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EP
European Patent Office
Prior art keywords
pipe
fluid
mixture
liquid
abrasive
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.)
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EP94810410A
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German (de)
English (en)
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EP0634229A1 (fr
Inventor
Hans-Peter Kurtz
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Promotec AG
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Promotec AG
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    • 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
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B08B9/0323—Arrangements specially designed for simultaneous and parallel cleaning of a plurality of conduits
    • 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
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B08B9/0326—Using pulsations
    • 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
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B08B9/0328—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid by purging the pipe with a gas or a mixture of gas and liquid
    • 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
    • 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
    • B08B9/057—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 being entrained discrete elements, e.g. balls, grinding elements, brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
    • B24C3/325—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for internal surfaces, e.g. of tubes
    • B24C3/327—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks for internal surfaces, e.g. of tubes by an axially-moving flow of abrasive particles without passing a blast gun, impeller or the like along the internal surface

Definitions

  • the present invention relates to a method and a device for Interior cleaning and renovation of pipes, especially installed ones Pipelines, by means of a fluid and a jet or Abrasive.
  • Such treatment of pipes is in principle from GB-A-1 236 205 known (see preamble of claims 1 and 18).
  • a disadvantage with the method described above is that Abrasive at the end of the lines at high speed exit. In order to create a large amount of dust prevent the abrasive in a separate Dedusting system, also because the harmful effects of dust, especially of Quartz dust, is known.
  • Another disadvantage of the process according to DE-A-3 235 506 is that the cleaning effect in generally gets worse the longer the pipeline is. This is due to the fact that the grains of sand after one certain route less and less often to the pipe walls bounce and also their impulse directed at the pipe walls presumably decreases.
  • a characteristic of the known Sandblasting is also that at the Cleaning a branched piping system Abrasives are always added to the smaller pipe diameter and must be eliminated in the case of the larger pipe diameter, because in the opposite case there would be a risk of constipation. This procedure inevitably shows that the Main pipes of larger diameter several times and excessively to be cleaned, causing undesirable pipe bends Material removal can come.
  • the invention aims at a cleaning method and a To propose cleaning composition by the beginning mentioned disadvantages can be largely avoided.
  • the procedure should be easier to use than that known methods.
  • a device for Implementation of the process in a simple and inexpensive manner Be acquisition.
  • the beneficial effect of the liquid additive can be explained with the fact that the liquid quasi as "Braking agent" for the abrasive grains works and therefore one allows more gentle cleaning of pipes.
  • the cleaning effect can be increased by a larger one
  • the proportion of abrasive grains with a larger diameter is increased will.
  • the tubes in any Direction, as well as sector resp. cleaned in sections can be. This means that "defined" pipe sections can be cleaned with a similar diameter and thus a uniform cleaning effect is achieved. This is the risk of undesired material removal or Pipe penetration largely eliminated.
  • Another advantage The inventive method is that, in contrast to known prior art no more dedusting system is because no dust is generated.
  • the procedure can be used Cleaning of pipes of any kind can be applied especially of installed pipes for liquids or Gases, their cleaning with other methods because of bad Accessibility is difficult.
  • Liquid and gas can also be used for pipes in which flammable media is transported will.
  • the procedure is suitable due to the gentle Cleaning especially for pipes made of softer or sensitive materials, such as copper or plastic pipes.
  • the process compared to the known Dry processes also have the advantage of being cleaned Pipes no longer need to be dried beforehand.
  • the abrasive, the liquid and the gaseous fluid are advantageously applied under approximately the same pressure, which is between 2.0265 and 12.159 x10 5 Pa (2 and 12 bar), preferably between 4.053 and 8.106 x10 5 Pa (4 and 8 bar).
  • the abrasive can be accelerated to a speed at which it causes the desired abrasive effect.
  • the effect depends essentially on the type and possibly the composition of the abrasive, the amount of liquid and the speed of the abrasive.
  • an air compressor can be used to generate an excess pressure.
  • the high pressure water required can be branched off directly from a high pressure water connection.
  • the abrasive, the liquid and the gaseous fluid can also be conveyed through the pipe by applying an overpressure and / or a vacuum.
  • the pressure is expediently applied intermittently. This can increase the abrasive effect of the abrasive will.
  • the pressure is advantageously set so that the Mixture of abrasive, liquid and gaseous Fluid pulsates in the tube. This also has an improvement the grinding effect. It is appropriate that Direction of the mixture during the cleaning process to reverse at least once. This also allows the pipe to Places to be cleaned in a certain direction lie in a blind spot. In contrast, can the drying process mentioned in the introduction the direction of rotation not be reversed because when cleaning in the direction of Block the pipes from larger to smaller diameters.
  • the abrasive used and / or the Liquid circulated and used several times. Thereby may the disposal costs incurred for a Contaminated abrasive / liquid mixture low being held.
  • the coating is advantageously done by Suction of a resin plug using a vacuum.
  • the other connection points only need can be closed without having to do this like when coating is the case by means of an overprint, for the rest Line system can also be set an overpressure should. If this was not the case with the latter procedure, the resin plug would become uncontrolled in Spread the pipe system.
  • a device for performing the method has one Container for holding an abrasive, one a Dosing device or a mixing tube having a dosing valve, which connects the container to a pipe to be cleaned, and at least one feed line and / or Connection point on the container and / or on the mixing tube Feed in at least one gaseous and one liquid Fluids, and means for generating a super and / or Vacuum to the abrasive with the liquid and the swirl and accelerate gaseous fluid.
  • This Device is inexpensive and only requires a small one Space requirements.
  • a separator is expediently provided, which via a first, a pump line with the Supply lines, respectively. Connection points for the liquid Fluid, and via a second valve-provided line communicates with the pressure vessel. This has the Advantage that the liquid fluid used and Abrasive can be used several times.
  • a suitable cleaning composition for Internal cleaning of pipes, especially of installed ones Piping includes 1 volume of abrasive, 1 to 12 Parts by volume, preferably 3 to 7 parts by volume of a liquid and 80 to 3000 parts by volume, preferably 600 to 1,200 Parts by volume of a gaseous fluid (at normal pressure), where the mixture of abrasive, liquid and gaseous fluid by applying an overpressure and / or a vacuum a pipe to be cleaned is sent.
  • This composition is particularly effective and allows gentle cleaning of Pipes. By cleaning with this wet or damp The mixture is neither predrying nor vacuuming at the end of the pipe required. The mixture filling the pipe ensures uniform all-round cleaning without the risk of Penetration of pipe bends. Damage is also caused by static charges avoided.
  • the liquid fluid water and the gaseous one are advantageous Fluid air. It is also advantageous if the abrasive is a mixture of different grain sizes. It has namely shown that the cleaning effect is the better, ever is larger than the grain diameter. A mix of different Grain sizes has the advantage of having a good cleaning effect can be achieved with little risk of constipation. In this Context should not go unmentioned that use of grain sizes of e.g. 6 mm in the conventional and dry cleaning methods mentioned at the beginning would be unthinkable, since such grain sizes inevitably damage the would lead pipes.
  • an inhibitor and / or to the mixture
  • Add cleaning additives It can also be a Binders are added so that a paste is formed, that can be pushed through the pipes.
  • a device 11 for performing the inventive 1 has a pressure vessel 13 for Inclusion of an abrasive 15, lines 17, 19, 20 for Supply of a liquid and a gaseous fluid in the Pressure vessel 13 and in a mixing tube 21 which the Pressure vessel 13 and a pipe 23 to be cleaned connects, as well as pressure medium, e.g. an air compressor 25, for generation an overpressure.
  • the cleaning effect in the deposits having tube 23 is achieved in that a Abrasive 15 and a liquid fluid with the gaseous Fluid swirls, accelerates and is sent through tube 23 becomes. It goes without saying that the gaseous and the liquid fluid is at approximately the same pressure need to prevent the two fluids used to displace each other.
  • line 17 the gaseous fluid, and through the lines 19, 20 the liquid fluid supplied.
  • the liquid fluid e.g. Water from a high pressure water connection is already under pressure and can be shut off by valve 27.
  • a Pressure reducer 29 allows the setting of a certain one Pressure.
  • a portion of the liquid Fluids, usually water, are fed into the mixing tube 21, the rest is through line 20 in the lower part of the Container 13 passed.
  • the water led into the container 13 has the purpose of wetting the abrasive, so that it from the container 13 can be rinsed.
  • line 20 can another high pressure pump (not shown) is provided be.
  • the line 17 through which a compressed gas in the Usually air that is supplied is at the outlet of the container 13 the mixing tube 21 connected.
  • the line 17 has a Shut-off valve 16 and a pressure regulator 18.
  • the Abrasive 15 can by an adjustable valve 32 or a flap can be passed into the mixing tube 21. Will that Valve 32 opened, so arises in pressure vessel 13 practically instantaneously the same pressure as in the mixing tube 21 a.
  • Fig.2 shows a typical installation for cleaning an over pipeline system 31 extending over several floors of an apartment building.
  • the device of Fig.2 differs from that of Fig.1 essentially only in that means are provided to the abrasive and to use the water used several times.
  • the presentation is therefore, as far as possible and expedient, the same reference numbers are used in FIG. 2 as in FIG. 1.
  • a separator 33 e.g. a Cyclone separator, provided, in which the from the Pipe system 31 with emerging cleaning composition the contaminants.
  • the separator 33 stands via a valve 35 or a slide with the pressure container 13 in connection. Through the valve 35, the remote Abrasive can be drained back into the pressure vessel 13.
  • a line 37 also allows the excess water of the To pass separator 33 into a water tank 39.
  • the Water tank 39 mainly has a storage function, can however be used as a further separator. From Water tank 39 can the water via a line 41 and a Pump 43 can be fed back into lines 19, 20.
  • a drain valve 45 on the bottom, which Can serve cleaning purposes or the supply of water.
  • the piping system 31 to be cleaned has a large number of water connection points 47, which are located on different Floors.
  • the piping various Floors are interconnected by a main line 49 connected.
  • the cleaning device 11 ' is by means of Flow lines 22 and return lines 51 to the Water connection points 47 connected.
  • the supply lines 22 serve to supply the cleaning composition, and the return lines 51 of the return of the Cleaning composition in the container 33. It has proven to be Proven to be useful at adjacent water connection points 47 alternately flow lines 22 and return lines 51 to be connected. This has the advantage that Pipe system 31 can be cleaned in sections.
  • a distributor battery 53 intended. There are a large number of this distributor battery 53 of supply lines 22, advantageously in blocks, can be connected.
  • a connection battery (not shown) to which the return lines are provided 51 can be connected in blocks. With this design you can the supply lines 22 and return lines 51 each quickly either on the separator 33 or on the distributor battery 53 be connected. This allows the running direction of the Quickly turn the cleaning composition over by turning the Connection flanges can be changed.
  • the pre and Return lines 22, 51 point to their respective Shut-off valves 55 on the water connection-side ends.
  • the cleaning process can be used as follows: In the pressure vessel 13, an abrasive such as quartz sand is filled with water in a suitable ratio.
  • the output side of the mixing tube 21 is connected to a pressure jet hose or flow line 22 and the line pipe 23 to be cleaned or inserted into the line pipe.
  • the pressure e.g. about 5,573 x10 5 Pa or 5 bar
  • the pressure e.g. about 5,573 x10 5 Pa or 5 bar
  • compressed air e.g. 4,053 x10 5 Pa or 4 bar
  • the mixture is carried away and hurled through the conduit.
  • At the end of the line it can exit directly in a separator container to recover the blasting media. Suction at the end of the line is not necessary.
  • the conveying direction can then be switched on or off reversed several times to make blind spots, e.g. Pipe fittings, to reach in both directions, because a jamming of the Sandes at the transition to smaller pipe cross sections through the Water as a means of transport is avoided.
  • blind spots e.g. Pipe fittings
  • shut-off valves 55 For cleaning, two adjacent shut-off valves 55 are now opened and the pipe section between the two water connections is first appropriately rinsed with water (approx. 50 l / min, 5.5729 - 6.0795 x 10 5 Pa or 5 - 6 bar).
  • the next step is to convey the abrasive with compressed air and water through the pipe section to be cleaned. Approx. 8 - 10 Nm 3 (normal cubic meters) of air are blown into the mixing tube 21 under a pressure of approximately 6.0795 - 8.106 x10 5 Pa (6 to 8 bar) per minute. About 3 liters of water per minute (5.5729 - 8.103 x10 5 Pa or 5.5 to 8 bar) are added to the abrasive in the pressure vessel 13 via line 20.
  • high pressure water (30 to 80 l / min; 5.5729 - 8.103 x10 5 Pa or 5.5 to 8 bar) is added to the abrasive / water / air mixture.
  • the abrasive / water mixture is advantageously accelerated to a speed of approximately 1 to 10 m / s by the compressed air.
  • the air used flows through the pipe at a speed between approximately 30 and 100 m / s. In a specific case (pipe 3/8 "to 5/4") speeds of approx. 3 m / s for the abrasive and the liquid, and approx. 60 m / s for the air were calculated.
  • a particularly efficient cleaning effect can be achieved be when a pulsating in the supply lines 22 or vibrating flow.
  • This "pulsation" can achieved by varying the air pressure and / or water pressure will.
  • this pulsation can also be caused by the Pump 43 are amplified.
  • the pump 43 can e.g. a compressed air powered Water high pressure pump.
  • the cleaning of the Pipe section with the abrasive takes about 5 minutes.
  • the supply and return lines 22 and 51 exchanged, i.e. the flow lines 22 are on the separator 33 and the return lines 51 connected to the valve manifold 53, so the direction of the cleaning composition is just the opposite.
  • the process described above is repeated for all pipe sections until the whole pipe system 31 is cleaned.
  • the Flow line or delivery hose with a special Nozzle head and inserted into the pipes.
  • the nozzle outlet openings are advantageously to the rear (with regard to the direction of conveyance), which is all-round Centrifuging the mixture under pressure against the pipe walls and at the same time promotes the forward movement of the hose.
  • the Mixing ratio water / abrasive can be the pipe diameter and the degree of incrustation from "wet blasting" to "Wet rays" can be adjusted so that an optimal and gentle interior cleaning is achieved.
  • the rinse water can be a Passivation agent can be added, which is the preparation of Flash rust on the bare metal inner surfaces during prevent the drying process.
  • a suitable alkaline passivating agent is e.g. the product 31.00 the Company CM, CH-5612 Villmergen.
  • the rinse water can also be heated to speed up the subsequent drying process.
  • the piping system After rinsing / passivation, the piping system preferably dried with preheated air and the lines are warmed up to a temperature of 20 to 40 ° C.
  • the Heated air can come from an air manifold at the same time all water connections are distributed and the air outlet through the line 49 take place.
  • the drying process takes approx. 30 up to 60 minutes.
  • the required amount of a synthetic resin preferably an epoxy resin
  • each pipe section approximately 80 g per running meter of a 1/2 "pipe
  • the water connection is installed, blown into the pipes by means of compressed air.
  • the pressure and the amount of air must be adapted to the pipe diameter and the viscosity of the resin (eg overpressure coating: 2,533 x10 5 Pa or 2.5 bar, 5 to 8 Nm 3 , pipe diameter: 3 / 8 "to 5/4").
  • the setting of the pressure can be done beforehand without resin.
  • a second coating method is one on the whole Piping system calculated amount of synthetic resin at the most distant water connection and by means of the Blow compressed air to the nearest, closer water connection.
  • the Arrival of the synthetic resin at the next water connection can e.g. through a plugged on the water connection transparent tube can be observed. Once the resin appears, the same is blown back and to the next one Water connection promoted.
  • a third and very simple coating method is by means of a vacuum pump to suck the coating material.
  • the negative pressure is applied to the main line or sucked and the corresponding amount of resin with each water connection Open a valve entered.
  • the advantage of this method consists in the fact that there are no plugs on blind lines etc. can form and no blockages occur. This The method can be advantageous, particularly in the case of ring lines many water connections and outlets can be used.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Cleaning In General (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Detergent Compositions (AREA)

Claims (21)

  1. Procédé pour assainir des tuyaux d'un système de canalisations comportant une multiplicité de points de branchement, selon lequel, pour l'élimination de dépôts, un produit abrasif est humidifié avec un fluide liquide et le mélange liquide/produit abrasif est mis en tourbillon et accéléré au moyen d'un fluide gazeux et est véhiculé à travers le système de canalisations à nettoyer, caractérisé en ce que le système de canalisations est tout d'abord rempli de liquide, en ce que le produit abrasif humidifié est ensuite soutiré ou refoulé, sous dosage, dans un tuyau mélangeur (21), où un supplément de liquide est amené dans le mélange, et en ce qu'ainsi le système de canalisations rempli de liquide est nettoyé par secteurs ou par tronçons respectifs, chaque fois entre deux points de branchement.
  2. Procédé selon la revendication 1, caractérisé en ce que le mélange produit abrasif/liquide est acheminé à une vitesse d'environ 1 m/s à 10 m/s à travers le tuyau ou les tuyaux.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le produit abrasif, le fluide liquide et le fluide gazeux sont injectés sous une pression approximativement identique, qui se situe entre 2,0265 et 12,159 x 105 Pa (2 et 12 bars), de préférence entre 4,053 et 8,106 x 105 Pa (4 et 8 bars).
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que la pression est appliquée de façon intermittente.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que la pression est réglée de telle sorte que le mélange constitué de produit abrasif, du fluide liquide et du fluide gazeux produise des pulsations dans le tuyau.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que le sens de circulation du mélange est inversé au moins une fois pendant le processus de nettoyage.
  7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que le produit abrasif, le fluide liquide et le fluide gazeux sont véhiculés à travers le tuyau par application d'une surpression et/ou d'une dépression.
  8. Procédé selon l'une des revendications 1 à 7, caractérisé en ce que le produit abrasif mis en oeuvre et/ou le liquide sont entraínés en circuit et sont utilisés plusieurs fois.
  9. Procédé selon l'une des revendications 1 à 8, caractérisé en ce que le tuyau nettoyé est séché par soufflage et est ensuite revêtu d'une couche de matière plastique.
  10. Procédé selon l'une des revendications 1 à 9, caractérisé en ce que l'application de la couche de revêtement se fait par aspiration, au moyen d'une dépression, d'un précurseur de résine synthétique.
  11. Procédé selon l'une des revendications 1 à 10, caractérisé en ce que le tuyau nettoyé est pourvu d'une seconde couche de matière plastique, après que la première couche a été polymérisée, au moins déjà en partie.
  12. Procédé selon l'une des revendications 1 à 11, caractérisé en ce que le mélange abrasif se compose de
    1 partie en volume de produit abrasif,
    1 à 12 parties en volume, de préférence 3 à 7 parties en volume, d'un fluide liquide et
    80 à 3000 parties en volume, de préférence 600 à 1200 parties en volume, d'un fluide gazeux (à la pression normale),
    le mélange de produit abrasif, de fluide liquide et de fluide gazeux étant envoyé à travers un tuyau à nettoyer par application d'une surpression et/ou d'une dépression.
  13. Procédé selon la revendication 12, caractérisé en ce que le fluide liquide est de l'eau et le fluide gazeux est de l'air.
  14. Procédé selon l'une des revendications 12 ou 13, caractérisé en ce que le mélange peut présenter une granulométrie allant jusqu'à 10 mm environ, de préférence jusqu'à 6 mm environ.
  15. Procédé selon l'une des revendications 12 à 14, caractérisé en ce qu'un liant est ajouté au mélange.
  16. Procédé selon l'une des revendications 1 à 15, caractérisé en ce que des conduits d'aller (22) et des conduits de retour (51) sont respectivement raccordés en alternance à des points de branchement d'eau voisins (47) du système de canalisations (31) et en ce qu'un nettoyage du tronçon de tuyau situé entre deux points de branchement voisins est chaque fois réalisé. (10/dernier paragraphe et .....)
  17. Procédé selon l'une des revendications 1 à 16, caractérisé en ce que les conduits d'aller (22), d'une part, et les conduits de retour (51), d'autre part, sont raccordés en un bloc au dispositif de nettoyage et en ce que le sens de circulation de la composition de nettoyage est inversé par interversion en bloc des conduits d'aller (22) et des conduits de retour (51). (9/2e paragraphe)
  18. Dispositif pour l'assainissement de tuyaux, comportant un récipient (13) destiné à recevoir un produit abrasif, un tuyau mélangeur (21) qui est relié au récipient (13), au travers d'un moyen d'arrêt réalisé sous la forme d'un appareil de dosage ou d'une vanne de dosage (32), et qui peut être raccordé à au moins un tuyau à nettoyer, une pompe (43), au moins un conduit d'alimentation (20) prévu sur le récipient (13) pour y introduire un fluide liquide, un conduit d'alimentation (17) prévu sur le tuyau mélangeur pour y introduire un fluide gazeux et des moyens d'établissement d'une pression, reliés à ce conduit d'alimentation (17), pour accélérer le fluide gazeux, caractérisé par un autre conduit d'alimentation (19) Prévu sur le tuyau mélangeur (21) pour y introduire un fluide liquide, le tuyau à nettoyer faisant partie d'un système de canalisations comportant une multiplicité de points de branchement.
  19. Dispositif selon la revendication 18, caractérisé en ce qu'un séparateur (33) ainsi que des conduits d'aller (22) et des conduits de retour (51) sont prévus, les conduits d'aller (22) servant à amener la composition de nettoyage aux points de branchement d'eau (47) et les conduits de retour (51) servant à ramener la composition de nettoyage des points de branchement d'eau (47) dans le séparateur (33).
  20. Dispositif selon la revendication 19, caractérisé en ce que le séparateur (33) est relié, par l'intermédiaire d'un premier conduit (41) comportant une pompe (43), aux conduits (19) et/ou (20) pour le fluide liquide et, par l'intermédiaire d'un second conduit comportant une vanne (35), au récipient (13), et en ce que les conduits de retour sont reliés au séparateur (33) et les conduits d'aller (22), au tuyau mélangeur.
  21. Dispositif selon la revendication 19 ou 20, caractérisé par une prise multiple de distribution (53) sur le tuyau mélangeur (21) et une prise multiple de raccordement sur le séparateur (33), auxquelles les conduits d'aller (22) et les conduits de retour (51) peuvent être raccordés de façon interchangeable.
EP94810410A 1993-07-12 1994-07-12 Procédé, assemblage et dispositif pour le nettoyage et revêtement interne d'une tuyauterie Expired - Lifetime EP0634229B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2079/93 1993-07-12
CH207993 1993-07-12

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EP0634229A1 EP0634229A1 (fr) 1995-01-18
EP0634229B1 true EP0634229B1 (fr) 1998-10-07

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EP (1) EP0634229B1 (fr)
AT (1) ATE171886T1 (fr)
DE (1) DE59407036D1 (fr)

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US6857436B2 (en) 1997-06-23 2005-02-22 Princeton Trade & Technology, Inc. Method of cleaning passageways using a mixed phase flow of a gas and a liquid
US6945257B2 (en) 1997-06-23 2005-09-20 Princeton Trade & Technology Method for cleaning hollow tubing and fibers
WO2005099918A1 (fr) * 2004-04-16 2005-10-27 Normand Lauzon Procede et appareil de nettoyage
US7862660B2 (en) 2007-01-12 2011-01-04 Princeton Trade & Technology, Inc. Device and method for fluid dynamics cleaning of constrained spaces
US8696823B1 (en) * 2002-08-28 2014-04-15 Pipe Restoration Technologies, Llc Methods and systems for abrasive cleaning and barrier coating/sealing of pipes
US9492853B2 (en) 2008-09-30 2016-11-15 Olympus Corporation Method for composition for cleaning tubular systems employing moving three-phase lines

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DE19701010A1 (de) * 1997-01-14 1998-07-16 Josef Stoeckl Verfahren zur Sanierung der Innenwände festverlegter Rohrleitungen
DE19781876D2 (de) * 1997-06-20 1999-09-09 Gevi Verfahren zur Sanierung von Rohrleitungen mittels Trockeneis
US6027572A (en) 1997-06-23 2000-02-22 Princeton Trade And Technologt, Inc Cleaning method for removing biofilm and debris from lines and tubing
JP3855213B2 (ja) * 1997-08-25 2006-12-06 日本ペイント株式会社 分散方法及び分散機
DE19745642C5 (de) * 1997-10-15 2004-12-02 Michael Schaaf Verfahren zur Sanierung von zur Wasserführung bestimmten inkrustierten Rohrleitungen durch Reinigung und Beschichtung
NO307453B1 (no) 1998-06-29 2000-04-10 Intel Sampling As Fremgangsmõte og anordning for behandling i form av fjerning eller põføring av belegg põ innvendige flater i et lukket fluidsystem
EP0987085A1 (fr) * 1998-08-21 2000-03-22 Elsen Rohrsanierung Gesellschaft zur Entwicklung und Anwendung von Systemen für Umwelt- und Sanierungstechniken mbH Procédé de nettoyage de conduites
FI108995B (fi) 1998-11-18 2002-05-15 Taifun Engineering Oy Ltd Menetelmä ja laitteisto teollisuusputkistojen puhdistamiseksi
DE19909377C2 (de) * 1999-03-04 2002-03-21 Kurt Hoerger Verfahren und Vorrichtung zum Schneiden und Abtragen von Hindernissen und Ablagerungen in nichtbegehbaren und begehbaren Rohren oder Kanälen
US6739956B2 (en) * 2001-10-30 2004-05-25 Valiant Corporation Apparatus for cleaning engine block passages
US7858149B2 (en) 2002-08-28 2010-12-28 Pipe Restoration Technologies, Llc Methods and systems for coating and sealing inside piping systems
US9611973B2 (en) 2002-08-28 2017-04-04 Pipe Restoration Technologies, Llc Process for coating the interior surface of water service lines
US8399813B2 (en) 2002-08-28 2013-03-19 Pipe Restoration Technologies, Llc Portable heating apparatus for heating interior piping systems
US7160574B1 (en) 2002-08-28 2007-01-09 Pipe Restoration Technologies, Llc Barrier coating corrosion control methods and systems for interior piping systems
US8524320B1 (en) 2002-08-28 2013-09-03 Pipe Restoration Technologies, Llc Process for coating the interior surface of water service lines
US6739950B1 (en) 2002-12-09 2004-05-25 Joerg Kruse Pipe renovating system and method
WO2004078373A1 (fr) * 2003-01-13 2004-09-16 The Boeing Company Dispositif de recueil et de recuperation de pastilles de mousse et son procede de mise en oeuvre
US7348039B2 (en) 2005-12-21 2008-03-25 Jak Aklian Method of making a newly installed plumbing system renewable
EP1872877B1 (fr) 2006-06-29 2010-07-28 Fluidor Equipment B.V. Procédé et appareil de nettoyage de tuyaux
CA2674439C (fr) * 2007-01-04 2016-06-07 Pipe Restoration Technologies, Llc Procedes et systemes servant a revetir et a adapter de facon etanche des systemes de tuyauterie interieure
US8402637B2 (en) 2008-11-04 2013-03-26 Chief Automotive Technologies, Inc. Vehicle fixture with alignment target
DE102010013167A1 (de) * 2010-03-27 2011-09-29 Hammann Gmbh Verfahren und Vorrichtung zur Entfernung von Ablagerungen und/oder Biofilmen in Wasser- oder Produktleitungen oder Rohrleitungssystemen
EP2674228B8 (fr) 2012-06-11 2014-09-17 Hammann GmbH Procédé de retrait de dépôts et/ou de biofilms dans une conduite par le biais d'une impulsion de pression modulée
HU229851B1 (en) * 2013-04-16 2014-10-28 Duna Kut Kft Method and device for cleaning the inner surface of pipelines
EP2815816B1 (fr) 2013-06-20 2017-08-02 Hammann GmbH Procédé d'optimisation du nettoyage de conduites ou d'installations traversées par du liquide
US20150165495A1 (en) * 2013-12-16 2015-06-18 Terrell H. Yon, III Abrasive cleaning of inner cooled generator coils
DE102017119610A1 (de) * 2017-08-26 2019-03-21 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Vorrichtung zur Erzeugung einer Folge von Strahlabschnitten eines diskontinuierlichen, modifizierten Flüssigkeitsstrahls
DE102020122674A1 (de) * 2020-08-31 2022-03-03 HOGATRON Deutschland GmbH Verfahren und Vorrichtung zur Reinigung von Getränkeleitungen einer Schankanlage
IT202200009122A1 (it) * 2022-05-04 2023-11-04 Co In Service S R L Apparato per il trattamento di una tubazione

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Cited By (8)

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US6857436B2 (en) 1997-06-23 2005-02-22 Princeton Trade & Technology, Inc. Method of cleaning passageways using a mixed phase flow of a gas and a liquid
US6945257B2 (en) 1997-06-23 2005-09-20 Princeton Trade & Technology Method for cleaning hollow tubing and fibers
US7367346B2 (en) 1997-06-23 2008-05-06 Princeton Trade & Technology, Inc. Method for cleaning hollow tubing and fibers
US8696823B1 (en) * 2002-08-28 2014-04-15 Pipe Restoration Technologies, Llc Methods and systems for abrasive cleaning and barrier coating/sealing of pipes
WO2005099918A1 (fr) * 2004-04-16 2005-10-27 Normand Lauzon Procede et appareil de nettoyage
AU2005232788B2 (en) * 2004-04-16 2010-09-16 Normand Lauzon Cleaning method and apparatus
US7862660B2 (en) 2007-01-12 2011-01-04 Princeton Trade & Technology, Inc. Device and method for fluid dynamics cleaning of constrained spaces
US9492853B2 (en) 2008-09-30 2016-11-15 Olympus Corporation Method for composition for cleaning tubular systems employing moving three-phase lines

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EP0634229A1 (fr) 1995-01-18
DE59407036D1 (de) 1998-11-12
ATE171886T1 (de) 1998-10-15

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