EP3290855B1 - Dispositif et procédé de nettoyage à haute pression de tuyaux d'un échangeur de chaleur - Google Patents

Dispositif et procédé de nettoyage à haute pression de tuyaux d'un échangeur de chaleur Download PDF

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Publication number
EP3290855B1
EP3290855B1 EP17187347.4A EP17187347A EP3290855B1 EP 3290855 B1 EP3290855 B1 EP 3290855B1 EP 17187347 A EP17187347 A EP 17187347A EP 3290855 B1 EP3290855 B1 EP 3290855B1
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EP
European Patent Office
Prior art keywords
tubes
guide
pressure
drive motor
hoses
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.)
Active
Application number
EP17187347.4A
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German (de)
English (en)
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EP3290855A1 (fr
Inventor
Jens Noack
Patrick Sterzenbach
Uwe Haag
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Buchen UmweltService GmbH
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Buchen UmweltService GmbH
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Publication date
Application filed by Buchen UmweltService GmbH filed Critical Buchen UmweltService GmbH
Priority to PL17187347T priority Critical patent/PL3290855T3/pl
Publication of EP3290855A1 publication Critical patent/EP3290855A1/fr
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Publication of EP3290855B1 publication Critical patent/EP3290855B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G1/00—Non-rotary, e.g. reciprocated, appliances
    • F28G1/16—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris
    • F28G1/163—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris from internal surfaces of heat exchange conduits
    • 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
    • F28G15/00—Details
    • F28G15/02—Supports for cleaning appliances, e.g. frames
    • 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
    • F28G15/00—Details
    • F28G15/04—Feeding and driving arrangements, e.g. power operation
    • 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
    • F28G15/00—Details
    • F28G15/08—Locating position of cleaning appliances within conduits

Definitions

  • the invention relates to an apparatus and a method for high-pressure cleaning of pipes of heat exchangers.
  • Heat exchangers are also referred to as tube bundle apparatus or heat exchangers. They have a large number of tubes arranged parallel to one another, which are arranged between an inlet region and in an outlet region.
  • cleaning devices are mounted on one of the areas, a cleaning nozzle, which is located at the free end of a lance, inserted into the pipe to be cleaned.
  • high-pressure water flows out of the nozzle.
  • the nozzle usually has several, mostly different nozzle openings. Some of them are directed forward, in working direction and others backwards, against the advancing direction of the lance.
  • the HD cleaning device for pipes of heat transfer for the simultaneous cleaning of at least three pipes known
  • the HD cleaning device has a connected to a drive motor reel, are wound on the HD hoses.
  • the drive motor has two operating states. In an operating state, namely when inserting the HD hoses in the tubes, the reel is freely rotatable. In the other operating state, namely when the cleaning is finished, the drive motor pulls the HD Hoses out of the pipes. The HD hoses are wound onto the reel
  • a high-pressure cleaning device for cleaning radioactively contaminated tube bundle is known.
  • a high-pressure hose is pushed, which carries at its front end a spray nozzle for the cleaning water.
  • a frame is provided in which two feed wheels, which receive the hose between them, are passable over the plane of the frame, this drive means are provided.
  • the device is intended for automatic operation, since the tube bundles to be cleaned are radioactively contaminated, the stay of a person near the cleaning device is hazardous to health.
  • the transport of the hose by means of the feed wheels is disadvantageous, soiling of the hose can cause the hose is not transported.
  • Peinemann, The Netherlands offers an inside bundle cleaner which has five parallel lances, each connected to HD hoses wound on a reel to which a drive motor is associated.
  • the lances are equipped with a nozzle at their free end.
  • the HD hoses each engages and engages under a revolving chain with guide means that takes each HD hose in the forward or reverse direction. In this way, the lances are moved into the pipes to be cleaned and also pulled out again accordingly.
  • the HD hoses are heavily stressed and worn by the chains.
  • a disadvantage of this device is also that it is a relatively large unit, which is usually built only once and then operated locally. It is not suitable as a mobile device to be transported to different locations.
  • a nozzle directly connected to an HD hose In the pipes to be cleaned, a part of the HD hose dips into the pipe. In a known manner, the propulsion is achieved by the jet propulsion. In each case, the jets exit the nozzles in each case towards the rear, jet jets directed counter to the working direction, which cause a recoil and, like a rocket, the nozzle drive forward. But this is also the HD hose located at the nozzle constantly pulled into a pipe. He is surrounded by the water of the backward nozzles and thereby wrapped and lubricated. The removed contaminants are moved substantially to the rear and not forward, so that no plug formation can occur at the front. Preferably, a part of the nozzle jets of a nozzle is directed forward to achieve cleaning effect there. The main part of the jets is directed to the rear, so that a total of a forward drive is obtained.
  • the cleaning device Due to the recoil principle can be dispensed with mechanical means of transport, such as chains. Since no lances are used, the cleaning device builds relatively short and is composed of fewer components than in the prior art.
  • the reel can be arranged in the vicinity of the heat exchanger to be cleaned, without the length of the lances here pretending a distance between the two.
  • the guide unit has guide tubes for the individual HD hoses.
  • the guide tubes have a lower end, which is dimensioned so that in particular the nozzle can not get into the guide tubes, preferably already a connection piece of the nozzle is so thick that it does not fit into the guide tube.
  • the guide tubes form a safety catch for the HD hoses or their nozzle.
  • the nozzle When the nozzle is withdrawn as far as possible, ie at the stop or just before the stop in a guide tube, it is still so far away from the mouths of the tubes and thus the plane, so they over the plane of arbitrary positions can be moved.
  • the guide tubes are sufficiently far inside to accommodate the HD tube with clearance.
  • the HD tube can also slide very well within the guide tubes, the inner surfaces are preferably lubricated.
  • the outer diameter of the HD hoses is matched to the clear inner diameter of the pipes so that an annular cross-sectional area remains free, the surface of which is at least as large as the surface of the clear inner cross-section of the HD hoses.
  • the HD hoses are identical.
  • identical nozzles are used.
  • the leadership unit has the task of positioning the flexible HD hoses on the one hand and on the other hand to align.
  • the guide tubes take care of being able to arrange the HD hoses equiaxially and in alignment with the individual tubes.
  • the distance of the guide tubes from each other can be varied, so that the guide unit can be adapted to different geometries of mirrors of heat exchangers.
  • At least one longitudinal guide preferably two lateral longitudinal guides are provided which have fastening means for their attachment to the heat exchanger, wherein the longitudinal guides are arranged transversely to the transverse guide and each have a guide carriage which carries the transverse guide, can also move in a second Direction, which is transverse to the first, take place. So all tubes of the mirror can be reached.
  • the HD hoses are arranged substantially in one row.
  • the guide tubes are arranged parallel to each other and in a plane.
  • the drive motor is rotatably connected via a gear with the reel.
  • this transmission is self-locking in Kraft Wegflußweg and / or it is additionally provided a brake that prevents rotation of the reel in an unwanted direction of rotation.
  • the drive motor drives the reel either in one direction or in the other direction. In the first operating state of the engine, this provides sufficient torque to the reel that the HD hoses can be pulled out of the pipes together in operation against the forward drive. In this case, the drive motor drives the reel in the winding direction. The drive motor can also drive the reel in the unwinding direction. Since the forward movement is achieved by the forward drive of the nozzles, the drive motor is not responsible for the retraction of the nozzles in the individual tubes. The retraction into the tubes is rather due to the recoil.
  • the engine specifies the speed at which the nozzles in the pipes progress.
  • the drive motor is operated in such a way that the HD hoses advance at a predetermined speed in the pipes.
  • the drive motor brakes the unwinding of the reel. He works against the forward drive. If the drive motor did not slow forward, the nozzles would travel through the tubes at a higher speed. Accordingly, the free speed at which a nozzle with an HP hose runs through a pipe is higher than the speed at which the drive motor allows the nozzle to advance in the pipe. Due to the drive motor working against the forward drive, the HD hoses remain under a certain tension. They deviate as little as possible from a stretched arrangement.
  • HD hose is still fed by the drive motor, which is in the 2nd operating state.
  • the HD hose in question is no longer under tension, rather it can bulge, for example on the reel. As a result, it is possible to detect a faulty operating state.
  • the pipe in question is then cleaned by other means.
  • the HD hoses run as straight as possible from the guide unit to the reel.
  • the HD hoses are tangential to the winding on the reel. If there is a deflection of the HD tubing between the guide unit and the reel, e.g. a 90 ° arc, it is advantageous to stiffen the bow, for example, there to provide a deflection roller. It should be avoided that when bow in the HD hoses bow significantly changes its shape.
  • the drive motor In a third operating state, the drive motor is stopped. Even if the nozzles work then, they can not continue to advance in the pipes. So it is stopped the tunneling.
  • the method is achieved by the method according to claim 7.
  • the respective nozzle is constantly flowed through with water.
  • the high-pressure water is thus normally not switched off during the cleaning of a heat exchanger. This avoids dead times caused by switching on and off.
  • the noise of the beam impinging on the mirror then changes characteristically when a guide tube is positioned above the mouth of a tube.
  • an operator is given a clear acoustic indication that is correctly positioned and the nozzle can now enter the pipe.
  • the invention is particularly suitable for heat exchangers whose tubes extend in the vertical direction. But it is also suitable for heat exchangers with extending in the other direction pipes, such as horizontally extending pipes.
  • the Figures 1 and 2 show in principle a heat exchanger 20.
  • the view goes to a plane 22 or mirror, from which pipes 24 of the heat exchanger 20 go out. They run downwards, in the z-direction.
  • the plane 22 lies in the xy plane.
  • the heat exchanger 20 is associated with an HD cleaning device. It has five parallel HD hoses 26, each carrying a nozzle 28 at one end. Such nozzles 28 are state of the art. How out FIG. 1 can be seen, the nozzle 28 is located just above the level 22. In this state, it can be moved over the individual tubes 24 and positioned as desired.
  • a guide unit 30 of the HD cleaning device has a total of five guide tubes 32, which are arranged parallel and in a plane 22, here specifically in the y-z plane. Other arrangements than in a plane 22 are possible, for example along a zigzag line.
  • the guide tubes 32 terminate in a lower end 34.
  • the guide tubes 32 each take a HD tube 26 with clearance and run it.
  • the nozzle 28 and / or a fitting of the nozzle to the HD tube 26 have such large dimensions that they do not fit into a guide tube 32.
  • the guide unit 30 has an adjusting device 36. It allows to adjust the spacing of the individual guide tubes 32. For this purpose, oblong holes and screws are provided, see FIG. 4 , Specifically, the distance is set in the y-direction.
  • the guide tubes 32 have tube axes which extend in the z-direction. They thus run in the same direction as the tubes 24.
  • transverse guide 38 is provided, it extends at least over the diameter of the mirror 22.
  • the guide unit 30 has a carriage, they can be moved by means of the carriage along the transverse guide 38 in the y direction.
  • the transverse guide 38 can be positioned as desired, in the exemplary embodiment, it is positioned parallel to the y-direction.
  • an angular adjustment 40 is provided. It is arranged between the carriage and the actual guide unit 30 and allows the actual guide unit 30 to pivot relative to the carriage about the z-direction as an axis, for example at an angle of ⁇ 15 °. In this way, if the transverse guide 38 is not, as in FIG. 2 aligned exactly parallel to the rows of tubes 24, they are aligned parallel to these rows of tubes.
  • two longitudinal guides 42 are provided, which are formed for example as rails, as well as the transverse guide 38.
  • the transverse guide 38 has at its ends guide carriage 44, with which it is guided in the two longitudinal guides 42 slidably.
  • the two longitudinal guides 42 extend in the exemplary embodiment parallel to the x-axis.
  • Transverse guide 38 and longitudinal guide 42 are in the xy plane. As FIG. 2 shows, the longitudinal guides 42 are outside the mirror 22. Overall, all the tubes 24 can be achieved via the transverse guide 38 and the longitudinal guide 42, possibly the angle adjustment 40.
  • the guide unit 30 are five guide means 46 for the HD hoses 26. These are essentially Teflon hoses in which the HD hoses 26 are guided. They extend all the way to a reel unit, which will be discussed in more detail below. It has a reel 48 on which the five HD hoses 26are wound up. There are also feed openings 49 for high pressure water at the other end of the HD hoses 26 are formed. As a result, high-pressure water supplied to the HP hoses 26 reaches the nozzles 28.
  • the reel 48 is rotatable about an axis which is parallel to the y-direction. It is rotationally driven by a drive motor 50.
  • This is a control device (not shown) associated with, which allows to switch the drive motor 50 in several operating states.
  • a first operating state of the drive motor 50 drives the reel 48 in the winding, ie in FIG. 1 in the counterclockwise direction, while the HD tube is transported in the guide means 46 in the positive x-direction and pulled away from the tubes 24.
  • the drive motor 50 supplies a sufficiently large torque to the reel 48, that the HD hoses 26 can be pulled out of the tubes 24 in total against the forward drive.
  • the drive motor 50 operates in the opposite direction, ie in the unwinding direction.
  • the reel 48 then outputs the HD hoses 26 with a controlled, predetermined by the speed of the drive motor 50 speed. It is this speed at which the nozzles 28 advance within the tubes 24.
  • the drive motor 50 has a braking effect on the forward movement of the nozzles 28. Without the braking effect, the nozzles 28 together with their HD hoses 26 would pass through the tubes 24 more quickly. They would not all get ahead at the same speed.
  • the HD hoses 26 are not conveyed by the drive motor 50. Their forward movement is done exclusively by the forward drive due to the backward jets. The forward movement of the nozzles 28 is supplied by the driving force to the nozzles 28 from the recoil and not from the drive motor 50. Typical feed rates are 2 m / s plus minus 50%.
  • Air motors are advantageous, especially in conjunction with an air-controlled brake.
  • the HD pipe heat transfer device is designed for the simultaneous cleaning of at least 3 pipes and comprises a) at least 3 HP hoses, b) a nozzle at each free first end of each HP hose, the nozzle having orifices which jets emit during operation jets, the jets produce predominantly recoil during operation and cause a forward drive of the HD hose, c) a guide unit having a guide tube for each HD hose, each with a guide tube one of the HD hoses each game d) a reel on which the HD tubes coming from the guide unit are wound and feed ports for high pressure water at each second end of each single HD hose, and e) a drive motor, which is rotatably connected to the reel and having a plurality of operating states, wherein in a first operating state, the drive motor supplies sufficient torque to the reel to pull the HD hoses against the forward drive of the tubes.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning In General (AREA)

Claims (9)

  1. Dispositif de nettoyage à haute pression pour tubes (24) d'échangeurs de chaleur pour le nettoyage simultané d'au moins trois tubes (24), le dispositif de nettoyage haute pression comportant
    - au moins trois tuyaux flexibles haute pression (26),
    - une buse (28) à chaque première extrémité libre de chaque tuyau haute pression (26), la buse (28) ayant des ouvertures de buse par lesquelles, en utilisation, des jets de buse sortent, les jets de buse produisant, en utilisation, principalement un recul et provoquant la propulsion avant du tuyau haute pression (26) et, en utilisation, les tuyaux haute pression (26) étant tirés dans les tubes (24) par la propulsion avant,
    - une unité de guidage (30) et
    - une bobine (48) sur laquelle sont enroulés les tuyaux haute pression (26) provenant de l'unité de guidage (30), des ouvertures d'alimentation en eau haute pression étant prévues à chaque seconde extrémité de chaque tuyau haute pression (26) individuel,
    caractérisé
    - en ce que l'unité de guidage (30) présente un tube de guidage (32) pour chaque tuyau haute pression, un tube de guidage (32) recevant respectivement un des tuyaux haute pression (26) avec jeu, les tubes de guidage (32) étant alignés parallèlement les uns aux autres et chaque tube de guidage (32) étant situé sur le même axe qu'un tube, un espace libre restant entre une extrémité inférieure de chaque tube de guidage (32) et une bouche du tube,
    - et en ce qu'il est prévu un moteur d'entraînement (50) qui est relié de manière rotative à la bobine (48) et qui présente plusieurs états de fonctionnement, le moteur d'entraînement fournissant un couple de rotation suffisant à la bobine (48) dans un premier état de fonctionnement de sorte que la bobine (48) tourne dans la direction d'enroulement et les tuyaux flexibles haute pression (26) sont tirés des tubes (24) pendant le fonctionnement contre la propulsion avant.
  2. Dispositif de nettoyage à haute pression selon la revendication 1, caractérisé en ce que, dans un deuxième état de fonctionnement, le moteur d'entraînement fait tourner la bobine (48) dans la direction de déroulement et détermine la vitesse à laquelle les tuyaux flexibles haute pression (26), qui sont tirés dans les tubes (24) pendant le fonctionnement en raison de propulsion avant, s'enfoncent dans les tubes (24) et les tuyaux flexibles haute pression (26) ne s'enfoncent pas dans les tubes (24) à une vitesse supérieure à celle déterminée par le moteur d'entraînement.
  3. Dispositif de nettoyage á haute pression selon l'une des revendications précédentes, caractérisé en ce que l'unité de guidage (30) présente un dispositif de réglage (36) pour régler la distance entre les différents tubes de guidage (32).
  4. Dispositif de nettoyage à haute pression selon l'une des revendications précédentes, caractérisé en ce qu'il comporte un guidage transversal (38) et en ce que l'unité de guidage (30) comporte un chariot déplaçable de manière réglable le long du guidage transversal (38).
  5. Dispositif de nettoyage à haute pression selon la revendication précédente, caractérisé en ce que l'unité de guidage (30) présente un déplacement angulaire (40) qui est disposé entre le chariot et le reste de l'unité de guidage (30) et permet un déplacement angulaire (40) des tubes de guidage (32) par rapport au sens longitudinal du guidage transversal (38).
  6. Dispositif de nettoyage à haute pression selon l'une des revendications 4 et 5, caractérisé en ce qu'il comprend au moins un guidage longitudinal (42) comportant des moyens de fixation pour sa fixation à l'échangeur de chaleur (20), s'étendant transversalement par rapport au guidage transversal (38) et comportant un chariot de guidage (44) portant le guidage transversal (38).
  7. Procédé de fonctionnement d'un dispositif de nettoyage à haute pression présentant les caractéristiques selon l'une des revendications 1-6, caractérisé en ce que de l'eau s'écoule en continu à travers les tuyaux haute pression (26), en ce que tiré par le moteur d'entraînement (50) et la bobine (48) les buses (28) sont situées sous les extrémités inférieures des tubes de guidage (32) et en dehors d'un tube (24), en ce que le unité de guidage (30) est déplacé jusqu'au positionnement des buses (28) sur des tubes (24) à nettoyer, en ce que le moteur de commande passe au deuxième mode de fonctionnement et ainsi les buses (28) et les tuyaux haute pression (26) qui se trouvent sur eux entrent dans les tubes (24) et nettoient les tubes (24).
  8. Procédé selon la revendication 7, caractérisé en ce que, après le nettoyage des tubes (24) dans lesquels les tuyau haute pression (26) sont immergés, le moteur d'entraînement (50) est amené dans le premier état de fonctionnement et les tuyaux haute pression (26) sont retirés des tubes (24) contre la propulsion avant.
  9. Procédé selon la revendication 7 ou 8, caractérisé en ce que, dans un 3ème état de fonctionnement, le moteur d'entraînement (50) arrête tout mouvement des buses (28) à l'intérieur des tubes (24), même lorsque de l'eau est fournie.
EP17187347.4A 2016-09-06 2017-08-22 Dispositif et procédé de nettoyage à haute pression de tuyaux d'un échangeur de chaleur Active EP3290855B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17187347T PL3290855T3 (pl) 2016-09-06 2017-08-22 Urządzenie i sposób dla wysokociśnieniowego czyszczenia rur wymienników ciepła

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016116605 2016-09-06

Publications (2)

Publication Number Publication Date
EP3290855A1 EP3290855A1 (fr) 2018-03-07
EP3290855B1 true EP3290855B1 (fr) 2019-07-17

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EP17187347.4A Active EP3290855B1 (fr) 2016-09-06 2017-08-22 Dispositif et procédé de nettoyage à haute pression de tuyaux d'un échangeur de chaleur

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Country Link
EP (1) EP3290855B1 (fr)
DK (1) DK3290855T3 (fr)
ES (1) ES2749798T3 (fr)
PL (1) PL3290855T3 (fr)

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Publication number Priority date Publication date Assignee Title
CN117339940B (zh) * 2023-10-08 2024-04-05 广东海川机器人有限公司 一种核电蒸汽发生器管壁清洗机器人及方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2807121B2 (de) 1978-02-20 1980-11-13 Richard Buchen Gmbh, 5000 Koeln Verfahren und Vorrichtung zur Hochdruck-Strömungsmittel-Reinigung von Strömungswegen in Rohren
DE3418835A1 (de) 1984-05-21 1985-11-21 Ernst Schmutz GmbH, 7858 Weil Vorrichtung zum reinigen radioaktiv kontaminierter rohrbuendel
JPS63294497A (ja) * 1987-05-26 1988-12-01 Kawasaki Heavy Ind Ltd チュ−ブ内への長尺体の挿入装置
NL9200799A (nl) * 1992-05-04 1993-12-01 Meino Jan Van Der Woude Verticale reinigingslansmachine.
DE29723349U1 (de) 1996-04-23 1998-12-03 Buchen Umweltservice GmbH, 50735 Köln Hochdruckreinigungsvorrichtung zur Reinigung von Rohren eines Wärmetauschers
WO2006021164A1 (fr) * 2004-08-20 2006-03-02 A. Monforts Textilmaschinen Gmbh & Co. Kg Échangeur de chaleur à tubes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3290855A1 (fr) 2018-03-07
ES2749798T3 (es) 2020-03-23
DK3290855T3 (da) 2019-10-07
PL3290855T3 (pl) 2020-03-31

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