EP3123096B1 - Verfahren und vorrichtung zum reinigen von rohrbündeln - Google Patents

Verfahren und vorrichtung zum reinigen von rohrbündeln Download PDF

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Publication number
EP3123096B1
EP3123096B1 EP15713189.7A EP15713189A EP3123096B1 EP 3123096 B1 EP3123096 B1 EP 3123096B1 EP 15713189 A EP15713189 A EP 15713189A EP 3123096 B1 EP3123096 B1 EP 3123096B1
Authority
EP
European Patent Office
Prior art keywords
cleaning
pipe
pressure hose
cleaning device
control device
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
EP15713189.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3123096A1 (de
Inventor
Reinhard Eisermann
Bodo SKALETZ
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.)
LOBBE Industrieservice GmbH and Co KG
Original Assignee
LOBBE Industrieservice GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LOBBE Industrieservice GmbH and Co KG filed Critical LOBBE Industrieservice GmbH and Co KG
Priority to PL15713189T priority Critical patent/PL3123096T3/pl
Publication of EP3123096A1 publication Critical patent/EP3123096A1/de
Application granted granted Critical
Publication of EP3123096B1 publication Critical patent/EP3123096B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • B08B9/0325—Control mechanisms therefor
    • 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
    • B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
    • B08B9/0433—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes provided exclusively with fluid jets as cleaning tools
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/103—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of more than two coaxial conduits or modules of more than two coaxial 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
    • F28G15/003—Control arrangements
    • 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
    • F28G15/04—Feeding and driving arrangements, e.g. power operation
    • F28G15/06—Automatic reversing devices
    • 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 a method for cleaning tube bundles with ends open at the ends, in particular tube bundles of heat exchangers, air coolers or condensers, in which an at least one cleaning device having cleaning device positioned adjacent to the open ends of the tube bundle and then the at least one high pressure hose having a cleaning device of a control device successively arranged in alignment with the respective tube of the tube bundle and the cleaning device is inserted into the respective tube and pressurized with liquid under high pressure.
  • the invention relates to a device for cleaning tube bundles with open ends, in particular of tube bundles of heat exchangers, air coolers or capacitors according to the preamble of claim 8.
  • An apparatus according to the preamble of claim 8 is made US 6,681,839 known.
  • Tube bundles are used in a variety of applications, such as heat exchangers, condensers, air coolers, etc. in industrial applications. Depending on the heat transfer medium, it can not be avoided that the tubes of the tube bundles become clogged or crusted with soiling or the like over an extended period of use, which may result in individual tubes even completely failing. It is therefore necessary to clean the inside of the tubes of such tube bundles and possibly the mirror of the tube bundle from time to time.
  • a method for cleaning tube bundles is known.
  • This known device is used in particular to be able to clean radioactively contaminated tube bundles in a simple manner and essentially without manual work in their immediate vicinity.
  • a video camera and lamps are arranged in the known device on a cleaning trolley and it is a remotely located control unit with hand levers and provided with a monitor for the video camera, which controls the movements of the cleaning trolley and the high pressure hose.
  • the US Pat. No. 6,681,839 discloses a method for cleaning tube bundles with ends open at the ends, in particular the tube bundles of heat exchangers, air coolers or condensers, in which a cleaning device having at least one cleaning device positioned adjacent to the open ends of the tube bundle and then the at least one cleaning device having a high pressure hose from a control device arranged in succession in alignment with the respective tube of the tube bundle and the cleaning device is inserted into the respective tube and subjected to liquid under high pressure.
  • the US 6,681,839 discloses a method according to the preamble of claim 1.
  • the object of the invention is to improve a method and a device of the type described above so that a user-error-free reliable and fast cleaning takes place.
  • the invention provides that, during the insertion of the at least one cleaning device into the respective tube, the depth of insertion is measured and monitored by the control device.
  • the monitoring of the depth of insertion preferably includes continuous monitoring, measuring and / or checking the insertion depth in order to document the cleaning progress. It is also possible to additionally or exclusively record the maximum insertion depths achieved.
  • the term insertion means both the insertion of the high-pressure hose into the pipe and the passage of the high-pressure hose through the respective pipe.
  • An automated cleaning method in which the depth of insertion of the cleaning device is measured and monitored during each insertion process (possibly attempted) of the at least one cleaning device into the respective tube. If the control device determines that the cleaning device or the high-pressure hose could not at all or not be completely inserted into the respective pipe, then generates an error message, which may, for example, result in manual post-cleaning of the relevant pipe. Operating errors are largely excluded because of the control device each tube of the tube bundle is approached with the at least one cleaning device, a not complete cleaning of a tube is determined by determining the respective depth of insertion.
  • the respective insertion depth is stored in the control device or in a storage and documentation device connected to the control device and documented for the respective cleaning process.
  • the storage and documentation device can also be integrated in the control device.
  • the documentation preferably comprises the assignment of the respectively measured insertion depth to the relevant tube, e.g. to the pipe number or location of the pipe, e.g. is defined via corresponding X and Y coordinates. Further, the documentation preferably includes information as to whether each tube was approached and whether each tube could be partially or completely cleaned. By storing this data, the completeness of the cleaning is documented.
  • the cleaning result is documented for each pipe so that a three-dimensional contamination profile of the pipe bundle is created in connection with the insertion depths.
  • a contamination profile has the advantage that constructive weak points, e.g. a heat exchanger, can be derived so that specific structural changes can be made to the heat exchanger to reduce the pollution and the degree of contamination of a tube bundle in the future.
  • a cleaning device with several parallel cleaning devices is used, which are simultaneously inserted into adjacent tubes and whose depth of insertion is measured and monitored independently of each other.
  • the respective arrangement and insertion movement of the respective cleaning device is performed automatically or semi-automatically by the control device on the basis of stored geometry data of the tubes of the tube bundle.
  • the geometry data of the tubes are preferably understood to mean the location coordinates of the tubes.
  • the geometry data may also include pipe spacing and / or diameter and / or length of the pipes and / or number of pipes.
  • the cleaning process can be done fully automatically.
  • control commands are entered by the operator into the control device, preferably by means of a remote control.
  • the remote control can be connected via a cable or via radio to the controller.
  • the fully or semi-automatic cleaning of the tubes has the advantage that the Operator can stand away from the pipe bundle to be cleaned, heat exchangers, etc.
  • the operator can be outside the danger zone and thus does not come into contact with the pipe contaminants during the cleaning process.
  • a visual contact with the end face of the tube bundle is not required because the release for approaching the next position via the feedback of the servomotors for the hose drive. For example, then the command to continue and save the data can be given.
  • the geometric data of the tubes of the tube bundle is detected by manually starting the tubes with the at least one cleaning device.
  • the at least one cleaning device is then positioned by an operator by manual intervention in the control device successively on all tubes of the tube bundle without the cleaning device or the high-pressure hose is inserted into the tubes.
  • the high-pressure hose or the high-pressure hoses can also be inserted into the pipes during this initial shutdown and the cleaning process can be carried out immediately.
  • the geometric position of all the tubes of the tube bundle is detected and stored, so that the geometry data are stored for the subsequent cleaning process or the cleaning operations in the future.
  • Each subsequent cleaning process as such can then be carried out fully or semi-automatically on the basis of the geometric data thus acquired.
  • the insertion depth is preferably measured by a servomotor of a propulsion device for the high-pressure hose of a cleaning device.
  • a servomotor electric motors are understood that allow the control of the angular position of the motor shaft and the rotational speed and acceleration.
  • Servo motors usually have a sensor for determining the position of the motor shaft. The determined by the sensor rotational position of the motor shaft is transmitted to a control electronics, which is referred to as a servo controller.
  • the measurement of the insertion depth is determined by evaluation z. B. determines the number of revolutions of the drive shaft, taking into account the scope of a drive roller for the high-pressure hose.
  • the insertion depth can be determined in this way with high accuracy.
  • the torque of the servomotor during the insertion of the high pressure hose into the tube - continuously or discontinuously - measured and the torque data are stored together with the respective depth of insertion in the control device or in a connected to the control device storage and documentation device.
  • the torque values can be used to determine the degree of contamination of the relevant pipe.
  • the obstacle can not or can not be easily eliminated and the cleaning process should be stopped at this point, to the servo motor and / or at the front end the high-pressure hose arranged outlet nozzle should not be damaged.
  • the servomotor may be switched to a purging mode in which the hose tip is stopped for a predetermined time in front of the obstacle, the obstacle is sprayed with the pressurized cleaning fluid, and after the lapse of time, the high pressure hose is advanced further.
  • the obstacle may be washed away under certain circumstances, so that the cleaning process can be performed according to plan in this tube to the end.
  • the servomotor can also be switched immediately into the return in such cases, to drive out the high-pressure hose from the pipe.
  • control device or the storage and documentation device.
  • the slip of the propulsion device is monitored during the insertion of the high-pressure hose.
  • Slip is usually understood as the deviation of the velocities of mechanical elements in frictional contact.
  • the speed difference z. B. determined between two rollers.
  • the slip can be determined via the speed difference of these two rollers.
  • the advantage of slip monitoring is that an obstacle within the pipe can be detected in time.
  • the slip measurement can be used to correct the measured insertion depth. The accuracy of the determination of the depth of insertion is thereby improved.
  • the insertion depth can be measured by scanning marks applied to or in the high-pressure hose.
  • the cleaning device is attached to the tube bundle. Since the cleaning device preferably has a displacement device on which the cleaning device is arranged, the displacement device is fastened to the tube bundle.
  • the displacement device is fastened exclusively to the tube bundle, preferably on a flange of the tube bundle.
  • Such a flange is provided on the end face of a tube bundle to fasten a lid there. After removal of the lid of this flange can be used to fasten the displacement device.
  • This attachment has the advantage that it is possible to completely dispense with undercarriages or cleaning trolleys, which simplifies the installation of the cleaning device on the bundle to be cleaned.
  • the space required for the cleaning device is significantly lower than in the conventional cleaning equipment.
  • the alignment of the cleaning device with respect to the pipe bundle is determined and the determined data is stored in the control device and taken into account in the correction of the travel path of the cleaning device.
  • a mechanical adjustment of the displacement device can be omitted.
  • the orientation of the cleaning device preferably relates to the orientation of the displacement device with respect to the tube rows, d. H. the pipe lines or pipe columns, wherein a so-called angular offset can occur.
  • angular offset By taking into account the angular offset, the starting accuracy and thus the reliability of the cleaning device is further increased.
  • the invention also provides a device with the features of claim 8.
  • the propulsion device and / or the cleaning device is equipped with a measuring device for measuring the respective insertion depth of the cleaning device in the respective tube, wherein the measuring device is connected to the control device.
  • the device provides a displacement device which has at least one first frame element and at least one second frame element, wherein the first frame element and the second frame element are arranged perpendicular to one another. Furthermore, at least a arranged on the displacement device cleaning device is provided, which has at least one high pressure hose and at least one propulsion device, wherein the high pressure hose is inserted by means of the propulsion device into the tubes.
  • a cleaning device may have at least one cleaning device.
  • a cleaning device may have at least one propulsion device, wherein each propulsion device conveys a high-pressure hose.
  • a high-pressure hose is understood to mean a hose which can be exposed to a pressure of 25 bar to 3000 bar.
  • the high-pressure hose can be equipped with an outlet nozzle or a lance.
  • a lance is a piece of pipe at the front end of which an outlet nozzle is arranged or integrated.
  • a control device is provided, which is connected at least to the displacement device and to the propulsion device.
  • the cleaning device has a measuring device for measuring and monitoring the respective insertion depth Z of the high-pressure hose, wherein the measuring device is connected to the control device.
  • the control device has a storage and documentation device or is connected to a storage and documentation device in which at least the respectively measured insertion depth can be stored.
  • the displacement device has means for fastening to the tube bundle.
  • these means are designed so that the displacement device can be fastened exclusively to the tube bundle.
  • the displacement device requires no further racks or the like or a cleaning trolley on which the displacement device is mounted.
  • the displacement device and thus the entire cleaning device is thus compact and requires only a small footprint.
  • the device can be mounted in a short time on the tube bundle to be cleaned.
  • Another advantage of this embodiment is that the few components of the shifting device facilitate the transport of the entire device.
  • the position of the tube bundle or heat exchanger to be cleaned can be arbitrary.
  • the advantage of the displacement device is that it can be easily attached both to horizontal and to stationary tube bundles. The cleaning of the tube bundle is thus not dependent on the position of the tube bundle.
  • the so-called mirror image i. the recognizable at the end face of the tube bundle arrangement of the tubes, be different. It is possible that the tubes of the tube bundle are grouped together in which the tube spacings are e.g. may be different, as e.g. in split heat exchangers is the case.
  • the first frame element to have the means for fastening to the tube bundle and for the second frame element to be arranged movably on the first frame element along the first frame element.
  • the first frame member is thus fixedly secured to the tube bundle and only the second frame member is movable relative to the first frame member.
  • the cleaning device or the cleaning devices is / are arranged movably on the second frame element.
  • the propulsion device has at least one drive roller for propulsion of the high-pressure hose.
  • at least one pressure roller for pressing the high-pressure hose against the drive roller is preferably provided.
  • the propulsion device has a slip monitoring device of the drive roller.
  • This slip monitoring device is preferably connected to the control device, so that when a slip occurs, the propulsion device can be switched off to avoid damage to the propulsion device or the hose end.
  • the data supplied by the slip monitoring device can also improve the accuracy of the insertion depth.
  • the propulsion device has at least one servo motor which drives the drive roller.
  • the propulsion device may have a measuring device for measuring the torque of the servomotor.
  • the advantages of the torque measurement are explained in connection with the method according to the invention.
  • an outlet nozzle is preferably arranged.
  • the outlet nozzle may have one or more outlet openings.
  • the outlet nozzle may be arranged to be rotatable and driven, for example, by the cleaning fluid flowing through the high-pressure hose.
  • the storage and documentation device is preferably for storage, processing, processing and evaluation during operation of the Cleaning device resulting data and / or input data formed.
  • a plurality of parallel cleaning devices are provided with their own propulsion device, wherein each cleaning device and / or each propulsion device are equipped with its own measuring device.
  • the respective measuring device has measuring sensors and measuring marks cooperating therewith on a high-pressure hose.
  • a magnetic scanning, an ultrasonic scanning or even the measurement of resistive inductive or capacitive resistors or a visual inspection with a suitable camera into consideration.
  • eddy current sensors which can measure distances on metallic high-pressure hoses with extremely high resolution up to the nanometer range without contact and wear.
  • the high-frequency field lines of the sensors responsible for the measuring principle pass through non-metallic media unhindered. This property allows measurement under oil or water pressure or under heavy pollution. Housing parts and materials made of plastic can also be penetrated and underlying metal objects can be detected. Paints and films can be examined for layer thickness.
  • the respective measuring device has roller keys which are in contact with the surface of the high-pressure hose.
  • the depth of insertion of the respective high-pressure hose can then be determined on the basis of the number of revolutions of the roller keys.
  • the respective cleaning device may have a high-pressure hose with outlet nozzle.
  • the respective cleaning device can also have a high-pressure hose with a lance connected thereto and insertable into the respective pipe.
  • the frame members are preferably made of a rigid profile and may for example be equipped with racks on which the respective drive means can act to move the cleaning device.
  • a tube bundle 1 for example, a tube bundle heat exchanger is shown, wherein the frontal open end can be seen, ie a closure cover or the like. Is dismantled.
  • the lid is normally attached to a flange or flange portion 2 with mounting holes 3.
  • the tube bundle 1 has in the sense of FIG. 1 in the horizontal direction, a plurality of parallel tubes 4, of which only a few are indicated.
  • a cleaning device for automatic cleaning of the tubes 4 of the tube bundle 1, a cleaning device according to the invention is provided, which is designated generally by 5.
  • This device 5 has at least two frame elements, namely a horizontal frame member 6 and a vertical frame member 7. These frame members 6, 7 are thus arranged perpendicular to each other.
  • the horizontal frame member 6 can be moved in the direction of the double arrow 6a with a drive, not shown in the horizontal direction
  • the vertical frame member 7 can be moved with a drive, also not shown relative to the horizontal frame member 6 in the vertical direction in the direction of the double arrow 7a.
  • a reverse arrangement is possible.
  • the two frame elements 6, 7 can be arranged on a (not shown) cleaning trolley, which may have its own drive, but need not.
  • the two drive units of the two frame members 6 and 7 are connected to a control device 50, not shown, which makes it possible to move a support point 8 on the frame member 7 at any point of the end face of the tube bundle 1.
  • a support frame 9 is fixed, on which a cleaning device 20 is arranged.
  • the cleaning device 20 has a high pressure hose 11 and a propulsion device 10 for the high pressure hose 11.
  • This propulsion device 10 has, as in FIG. 2 is shown, a tubular tube guide 12 and at least one drive roller 32, not shown, for insertion of the tube 11 in a tube 4 of the tube bundle 1 or for pulling it out, ie for movement of the tube 11 in the direction of the double arrow 13.
  • the at least one drive roller, not shown 32 is connected to a drive, not shown, which in turn is in communication with the control device 50.
  • the cleaning device 20 of this embodiment has the illustrated high-pressure hose 11, which has a nozzle, not shown, at the front free end. On the rear side, the high pressure hose 11 is connected to a high pressure pump or the like.
  • a second or further cleaning device (s) 20 can also be provided on the support frame 9 at a distance, so that a corresponding positioning of the support frame 9 relative to the tube bundle 1 can simultaneously push a plurality of high-pressure hoses 11 into adjacent tubes 4.
  • the propulsion device 10 and / or the cleaning device 20, ie in the embodiment of the high-pressure hose 11, are equipped with a measuring device 40 for measuring the respective depth of insertion of the high-pressure hose 11 into the respective pipe 4.
  • a measuring device 40 for measuring the respective depth of insertion of the high-pressure hose 11 into the respective pipe 4.
  • two arranged at the input and output of the propulsion device 10 measuring sensors 14 are provided.
  • the high pressure hose 11 is according to Fig. 3 provided at constant intervals with markings 15, for example in the form of magnetic strips, which can be detected by the sensors 14.
  • the sensors 14 are in communication with the control device 50.
  • each high-pressure hose 11 is moved by a separate servo motor 30 and the measurement of the depth of insertion via the servo motor 30 as a measuring device 40 takes place.
  • the device 5 For cleaning a tube bundle 1, the device 5 is arranged on the front side of the open tube bundle 1, the further cleaning process is then fully automatic.
  • the geometry data of the tubes 4 of the tube bundle 1 are preferably stored in the control device 50, so that the control device 50 automatically positions the respective cleaning device 20 successively on the tubes 4 of the tube bundle 1.
  • the geometry data of the tubes 4 of the tube bundle 1 are not known, they can be recorded or recorded manually with the cleaning device 5.
  • each tube 4 of the tube bundle 1 with the at least one cleaning device 20 is scanned or scanned, such that the cleaning device 20, so e.g. the tip of the high pressure hose 11, located at the entrance of the respective pipe 4.
  • the cleaning device 20 so e.g. the tip of the high pressure hose 11, located at the entrance of the respective pipe 4.
  • all tube positions are detected and stored in the control device 50.
  • the geometry data thus acquired can then be used for the subsequent cleaning process or subsequent cleaning operations.
  • the respective cleaning device 20 or the high pressure hose 11 is then retracted from the associated propulsion device 10 in the respective tube 4 and water or the like.
  • the insertion depth for each tube 4 is measured and monitored by the control device 50. If no or only incomplete cleaning of a pipe 4 takes place, an error message or even a warning message can be output directly from the control device 50.
  • the respectively measured insertion depth of each tube 4 is stored in the control device 50 and documented for the respective cleaning process.
  • FIG. 4 a further embodiment of a cleaning device 5 is shown which has a displacement device 25 with a first frame member 60 and a second frame member 70.
  • the first frame member 60 has attachment means 62a, b, which are designed as tabs in the embodiment shown here. These fastening means 62 a, b are attached to the flange 2 of the tube bundle 1. For this purpose, the mounting holes 3 are used in the flange 2.
  • the second frame member 70 Perpendicular to the stationary mounted first frame member 60, the second frame member 70 is arranged, which is arranged by means of a drive means 72 along the first frame member 60 movable in the arrow direction. On the second frame member 70, a further drive means 74 is arranged, which is connected to a support member 9, on which a cleaning device 20 is arranged.
  • the cleaning device 20 comprises a propulsion device 10 for two hoses 11 and a measuring device 40.
  • a second cleaning device 20 may be arranged, which, like the first cleaning device 20 has a propulsion device 10 for two hoses 11 and a measuring device 40.
  • the second cleaning device 20 is shown in dashed lines.
  • the support frame 9 is arranged movable in the direction of the arrow along the second frame member 70.
  • the drive devices 72 and 74 and the propulsion device 10 and the measuring device 40 are connected to a control device 50, which has a storage and documentation device 52. Furthermore, a remote control 54 is provided, with which an operator can transmit commands to the control device 50.
  • the zero point in the tube 4c which serves as a reference tube in the present case, is located.
  • the tube 4c is located at the left end of the upper tube row and represents the starting point for the cleaning process. Starting from the tube 4c, the tubes 4 are driven in rows until all the tubes 4 have been cleaned. In principle, any tube 4 can be selected as the reference tube 4c.
  • This coordinate system and the pipe coordinates x and y lying in this coordinate system are stored in the control device 50 or the storage and documentation device 52.
  • This geometry data can be obtained from the manufacturer or operator of the tube bundle 1 and entered into the control device 50. It is also possible to manually remove the tubes 4 by means of the remote control 54 and to store the corresponding x, y data in the control device 50 or the storage and documentation device 52 and preferably at the same time perform the cleaning of the tubes 4.
  • the cleaning process can then be carried out, manually only the pipe 4c is started.
  • the process can then proceed fully automatically or semi-automatically, wherein, for example, the change from one row of tubes to the next row of tubes can be performed manually. Also storing e.g. the depth of insertion can be done manually with each tube by means of the remote control 54.
  • FIG. 5 is the first frame member 60 in the same way as in FIG. 4 attached to the flange 2.
  • the second frame member 70 is movably disposed on both frame members 60.
  • the orientation of the displacement device 25 to check the pipe assembly Before the cleaning process is carried out, the orientation of the displacement device 25 to check the pipe assembly.
  • the first frame element 60 can not be arranged parallel to the tube rows 82 on the flange 2, so that an angular offset ⁇ occurs.
  • This angular offset ⁇ between the parallel 80 to the first frame member 60 and the row of tubes 82 is determined and stored in the control device 50, so that in the process of the cleaning device 20 this angle offset ⁇ in the spatial coordinates x, y of the tubes 4 can be included and taken into account.
  • the cleaning device 20 For this purpose, manually with the cleaning device 20, e.g. approached the tube 4a and stored the position. Subsequently, the cleaning device 20 is moved in front of the tube 4b and this position also stored, from which then the angle ⁇ of the row of tubes 82 can be determined to parallels 80.
  • a propulsion device 10 for the high-pressure hose 11 is shown schematically, which has two drive rollers 32 and 34 which are connected to each other via a belt or chain drive 33.
  • the drive roller 32 is driven by a servo motor 30 which is connected to the control device 50.
  • pressure rollers 36 and 38 are provided, with which the high-pressure hose 11 is pressed onto the drive rollers 32 and 34, whereby slippage of the high-pressure hose 11 on the drive rollers 32, 34 is largely avoided.
  • the additional drive roller 34 and pressure roller 38 can be dispensed with if the high-pressure hose 11 and the drive rollers 32, 34 have surfaces with a corresponding roughness, so that slippage of the drive rollers 32, 34 does not take place.
  • a roller sensor 44 is arranged by means of a sensor holder 46, which is connected to a slip monitoring device 90. With the sensor 44, the rotational speed of the pressure roller 36 is detected. This slip monitor 90 is also connected to the servo motor 30 and the controller 50.
  • the high-pressure hose 11 encounters an obstacle inside the pipe 4 to be cleaned, the high-pressure hose 11 is braked and there is a risk that the drive roller 32 will continue to run anyway. Since the insertion depth is determined via the servomotor 30 and the servomotor 30 thus also forms the measuring device 40, this would lead to an error in determining the insertion depth. By means of the slip monitoring device 90, this problem can be detected so that the servomotor 30 is switched off immediately and any further running of the drive roller 32 can be included in the calculation of the insertion depth.
  • One of the pressure rollers 36, 38 may also be designed as a roller button when a high-pressure hose 11 is used with markings 15, as shown in the FIG. 3 is shown.
  • This pressure roller 36, 38 is in such an embodiment part of the measuring device 40 for measuring the insertion depth and is connected to the control device 50 or the storage and documentation device 52.
  • FIGS. 7 and 8 various obstacles in the form of encrustations 16, 16 a, 16 b are shown within the tubes 4. Under the respective tubes 4, a schematic diagram of the torque D as a function of the distance z is shown.
  • the torque D of the servo motor 30 is constant during insertion of the high-pressure hose 11 into the pipe 4 and increases abruptly when the outlet nozzle 18 arranged at the front end of the hose 11 encounters an obstacle in the form of encrustation 16.
  • the torque is preferably detected with a torque measuring device 39, which is arranged in or on the servomotor 30 (s. Fig. 6 ).
  • FIG. 8 another situation is shown in which two are less large Encrustations 16a, 16b are shown.
  • the torque of the servomotor 30 increases. If it is possible to dissolve this encrustation 16a, the advance of the high-pressure hose 11 can be continued, so that the torque of the servomotor 30 drops again until the high-pressure hose 11 with the nozzle 18 strikes the next obstacle in the form of the encrustation 16b.
  • An exemplary sequence of cleaning a tube bundle 1 can take place as follows: The individual frame elements 6, 7 and 60, 70 are delivered together with the cleaning device (s) 20 and the control device 50 and are assembled on site to form a cleaning device 5. First, the first frame member 6, 60 is mounted on the tube bundle 1, and then the second frame member 7, 70 is mounted on the first frame member 6, 60.
  • the advantage of the device is, inter alia, that the frame elements both on horizontally oriented tube bundles 1 and vertically aligned tube bundles 1 can be mounted.
  • the device 5 is much more flexible than is the case with pipe cleaning devices in the prior art, which are mounted for example on a carriage that must be moved in front of the pipe bundle to be cleaned 1, which is only possible in the case of horizontally arranged tube bundles 1.
  • the cleaning operation may be started after the input, whereby the cleaning operation starts at a reference pipe 4c which is started up manually.
  • a reference pipe 4c which is started up manually.
  • This can e.g. be the first tube 4 of the first row of a tube bundle 1.
  • the reference tube 4c may also be any tube 4 of the tube bundle 1. If there are no geometry data, the geometric data are determined locally by means of a manual startup of the tubes 4 and preferably also the tubes 4 are cleaned at the same time.
  • the cleaning device 20 moves in front of a pipe 4 which is closed with a stopper, the high-pressure hose 11 can not enter the pipe 4. It is this tube 4 then associated with appropriate information that the high-pressure hose 11 could not retract. These data are then stored in the storage and documentation device 52.
  • the high-pressure hose 11 can enter the pipe 4 to be cleaned, there are two possibilities. Either the tube can be fully inserted into the tube 4 to the opposite end. Then the cleaning can be carried out on schedule and this cleaning success is also documented by storing the pipe data and the maximum depth of insertion.
  • the cleaning time is shortened once again.
  • a method of the cleaning device 20 always takes place only when all high-pressure hoses 11 have left their struck pipes 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cleaning In General (AREA)
EP15713189.7A 2014-03-28 2015-03-27 Verfahren und vorrichtung zum reinigen von rohrbündeln Active EP3123096B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15713189T PL3123096T3 (pl) 2014-03-28 2015-03-27 Sposób i przyrząd do czyszczenia wiązek rurek

Applications Claiming Priority (2)

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DE102014104356.1A DE102014104356A1 (de) 2014-03-28 2014-03-28 Verfahren und Vorrichtung zum Reinigen von Rohrbündeln
PCT/EP2015/056734 WO2015144889A1 (de) 2014-03-28 2015-03-27 Verfahren und vorrichtung zum reinigen von rohrbündeln

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EP3123096B1 true EP3123096B1 (de) 2019-08-28

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EP (1) EP3123096B1 (pl)
CA (1) CA2941210C (pl)
DE (1) DE102014104356A1 (pl)
ES (1) ES2755362T3 (pl)
PL (1) PL3123096T3 (pl)
PT (1) PT3123096T (pl)
WO (1) WO2015144889A1 (pl)

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US11327511B2 (en) 2013-05-09 2022-05-10 Terydon, Inc. Indexer, indexer retrofit kit and method of use thereof
DE102015218114B4 (de) 2015-09-21 2018-10-18 Lobbe Industrieservice Gmbh & Co Kg Verfahren und Vorrichtung zum Reinigen von Rohrbündeln
US11460258B2 (en) 2015-10-16 2022-10-04 Peinemann Equipment B.V. System for cleaning an object such as a heat exchanger
CN105318139B (zh) * 2015-11-30 2018-01-26 成都九十度工业产品设计有限公司 一种石油输送管道
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WO2018004348A1 (en) * 2016-06-28 2018-01-04 Statoil Petroleum As Improvements relating to the maintenance of heat exchangers
CN106440928B (zh) * 2016-08-27 2018-12-18 华电电力科学研究院 间接空冷岛的冷却三角热交换器内部脏污及腐蚀程度监视清洗装置和优化运行方法
US11300981B2 (en) 2016-08-30 2022-04-12 Terydon, Inc. Rotary tool with smart indexer
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Also Published As

Publication number Publication date
PL3123096T3 (pl) 2020-03-31
DE102014104356A1 (de) 2015-10-01
ES2755362T3 (es) 2020-04-22
CA2941210A1 (en) 2015-10-01
US20170016687A1 (en) 2017-01-19
WO2015144889A1 (de) 2015-10-01
PT3123096T (pt) 2019-11-21
EP3123096A1 (de) 2017-02-01
CA2941210C (en) 2023-01-03
US10048027B2 (en) 2018-08-14

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