EP0104520A2 - Méthode et dispositif pour nettoyer et contrôler la surface interne d'une conduite - Google Patents

Méthode et dispositif pour nettoyer et contrôler la surface interne d'une conduite Download PDF

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Publication number
EP0104520A2
EP0104520A2 EP83108923A EP83108923A EP0104520A2 EP 0104520 A2 EP0104520 A2 EP 0104520A2 EP 83108923 A EP83108923 A EP 83108923A EP 83108923 A EP83108923 A EP 83108923A EP 0104520 A2 EP0104520 A2 EP 0104520A2
Authority
EP
European Patent Office
Prior art keywords
pipe
plugs
compression chamber
tube
compression
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.)
Withdrawn
Application number
EP83108923A
Other languages
German (de)
English (en)
Other versions
EP0104520A3 (fr
Inventor
Willi Wolff
Eberhardt Bader
Winfried Knichelmann
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.)
Nukem GmbH
Original Assignee
Nukem GmbH
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 Nukem GmbH filed Critical Nukem GmbH
Publication of EP0104520A2 publication Critical patent/EP0104520A2/fr
Publication of EP0104520A3 publication Critical patent/EP0104520A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
    • 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
    • B08B9/0553—Cylindrically shaped pigs

Definitions

  • the invention relates to a method for automatically cleaning and checking pipes with the aid of plugs made of compressible material, in particular made of felt or foam, and a device for carrying out the method.
  • the degree of contamination of the plugs allows conclusions to be drawn about the cleanliness of the inner tube surfaces.
  • the difficulty of this method is that rags or plugs have to be laboriously inserted manually into the pipe to be treated. Since this procedure partly depends on the degree of soiling. Repeated several times on a pipe, this process is very cumbersome and time consuming.
  • the treatment of an inner pipe surface of a 30 m long pipe can take up to an hour.
  • Another disadvantage is the exposure of the operating personnel to solvent vapors and the constant contact with detergents.
  • the inside of the pipe is treated by blasting with abrasive agents. This method is also complex, associated with health risks and, in many cases, moreover cannot be used or can only be used to a limited extent.
  • the present invention was therefore based on the specification to provide a method for automatically cleaning and checking the inner surface of pipes with the aid of plugs made of compressible material, in particular made of felt or foam, and an associated device for carrying out the method, with which an automatic , quick and safe treatment of the inner tube wall is possible for the operating personnel.
  • the object was achieved in that the plugs are first soaked with a cleaning, rinsing or lubricant, the plugs then in a compression chamber by pressing with one or more Press punches are compressed to such an extent that the diameter of the plugs has an undersize of a few tenths of a millimeter compared to the inside diameter of the pipe to be treated, the pipe is positioned in front of an opening in the compression chamber, and then the compressed plugs, which have a common longitudinal axis with the positioned pipe, are inserted into the pipe from the compression chamber, which is still in the compression position of the press ram, with the plugs intensively treating the inner wall of the pipe as it passes through the expansion of the compressible plug material and inspected after leaving the pipe and, depending on the inspection findings, about a signal if necessary further plugs are inserted into the pipe.
  • the method according to the invention is based on the knowledge that compressible stopper material, brought to an undersize in relation to the inside diameter of the tube by pressing, can be conveniently and quickly inserted into a tube, which relaxes in the tube, that is, according to the material properties, such as those used for felt or certain types of foam is typical, expands in the tube.
  • the resulting intimate contact of the now widened plug soaked with cleaning agent ensures intensive and gentle treatment of the inner pipe surface. In this way, forceful insertion of the stopper, e.g. avoided with mechanical aids, thus preventing pipe damage, and inserting the stopper into the pipe in a surprisingly quick manner, in fractions of a second.
  • plugs are compressed one after the other by horizontal pre-compression and vertical final compression.
  • a largely arbitrary plug start geometry can be adapted to the inner pipe geometry.
  • the plugs are introduced into a cleaning, rinsing or lubricant circuit which is passed through the compression chamber and the pipe. Furthermore, it has proven to be particularly advantageous if, depending on the inspection findings given, the stopper is automatically inserted into the tube via a triggered signal or the inspected tube is automatically removed and a tube to be cleaned or checked is fed to the mouth of the compression chamber .
  • the method according to the invention is advantageously carried out in a device in which a feed for plugs, which is provided with a shower for cleaning, rinsing or lubricating agents, is connected to a compression chamber, and the compression chamber comprises a press die, press ram, a transport means feed and a Contains mouth for receiving the tube.
  • Plugs roll out of a plug magazine (1) (see Fig. I) in which there is a supply of cylindrical plugs (11), for example made of felt, whose diameter is larger than the inside diameter of the pipe (9) to be treated ( 11) over an inclined plane (30) onto a sieve bar (26) and are pushed on it by means of a cyclically operating slide (29) under a shower (2) in the direction of a compression chamber (3).
  • the shower (2) sprinkles the plugs (11) with washing, rinsing or solvent, which is fed from a storage container (24) via a pump (25). Excess detergent drips through the sieve bar (26) into a trough (31), from where it is returned to the storage container (24).
  • the moistened stoppers (11) are pushed further and fall or roll into a press die (5) of the compression chamber (3).
  • the plug (11) is correspondingly. formed channel (32) pressed and compressed into a cylinder (34) with an undersize of a few tenths of a millimeter relative to the pipe (9) to be treated.
  • the stamp collar (33) simultaneously seals the compression chamber (3) from the outside. Excess detergent released during compaction can drain through the pipe (9) to be treated.
  • This tube (9) is inserted into a mouth (8) provided with sealing elements (7), which has a correspondingly shaped tube inlet geometry and is located on the compression chamber (3).
  • the compressed plug (34) and the tube (9) have a common axis (22).
  • a transport medium for example compressed air
  • the compressed plug (34) along the channel (32) is properly inserted into the pipe (9) to be treated and driven through.
  • the compressed plug (34) expands according to the inside diameter of the pipe (9) and treats the inside wall of the pipe intensely when it is passed through by intimate contact.
  • the compressed air plug is triggered manually, advantageously via a signal transmitter (16) or automatically. After passing through the pipe (9), the plug is inspected for contamination and examined. Visual and other control methods known per se can be used. Depending on the inspection findings, further plugs (11) can be driven through the pipe (9) via the signal transmitter (16). The operation is therefore unproblematic and harmless.
  • the tube (9) is inserted into the mouth (8) by means of a controllable supply and discharge device (12) which is provided with a magazine (13) for untreated tubes and with a magazine (10) for treated tubes ) introduced.
  • cube-shaped or columnar material As a starting material for the plugs, cube-shaped or columnar material (see Fig. II), e.g. Cubes (18) made of polypropylene can be used. It is particularly favorable if the compression chamber (3) contains horizontally working rams (14) and a vertically working ram (15). It is also advantageous if the press die (5), the press ram (4, 14, 15) and the mouth (8) are interchangeably arranged, since the changeover times are sometimes reduced when changing over to other pipe dimensions. _
  • the compressed stopper (34) is introduced into a detergent circuit (17).
  • the detergent flow is passed alternately through the compression chamber (3) or behind it into the channel (32) between a correspondingly dimensioned through valve (19) and the mouth (8) through the pipe (9).
  • the detergent is sucked from a detergent storage tank (28) by a pump (27) and passed through the pipe (9) to be cleaned via a two-way valve (20).
  • the seal (7) prevents detergent from escaping.
  • the compression chamber (3) is loaded with a stopper (11). Then the previously closed valve (19) and a further previously also closed three-way valve (21) are opened and after a short delay the valve (20) is closed.
  • curved pipes can also be cleaned and checked in many cases.
  • suitable cleaning agents also allows the treatment of calcified pipes, since the plug insertion method according to the invention, in conjunction with the plug expansion in the pipe to be treated, leads to particularly intensive lime removal.
  • Pipes with an angular cross-sectional profile can also be cleaned and inspected in the manner according to the invention.
  • plugs made of foam have proven themselves well, while felt plugs are outstandingly suitable for the treatment according to the invention of already relatively clean pipes because of their special contact pressure when "rising” from the compressed, ie compressed, state.
  • the compression chamber (3) and its components can be made of metal or plastic, e.g. Teflon.
  • Treatment agent alcohol

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
EP83108923A 1982-09-28 1983-09-09 Méthode et dispositif pour nettoyer et contrôler la surface interne d'une conduite Withdrawn EP0104520A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3235785 1982-09-28
DE3235785 1982-09-28

Publications (2)

Publication Number Publication Date
EP0104520A2 true EP0104520A2 (fr) 1984-04-04
EP0104520A3 EP0104520A3 (fr) 1988-01-13

Family

ID=6174305

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83108923A Withdrawn EP0104520A3 (fr) 1982-09-28 1983-09-09 Méthode et dispositif pour nettoyer et contrôler la surface interne d'une conduite

Country Status (3)

Country Link
EP (1) EP0104520A3 (fr)
JP (1) JPS59136182A (fr)
ZA (1) ZA837035B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0580314A1 (fr) * 1992-07-24 1994-01-26 Matsui Manufacturing Co., Ltd. Procédé et dispositif de nettoyage de l'intérieur d'un tube
EP0581616A1 (fr) * 1992-07-31 1994-02-02 Petroleo Brasileiro S.A. - Petrobras Méthode d'enlèvement de liquide dans des systèmes de tubes, utilisant un tampon cylindrique mouvant

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3531813A (en) * 1968-09-17 1970-10-06 Combustion Eng Tube cleaning pellet gun
US3631555A (en) * 1970-03-09 1972-01-04 Combustion Eng Tube-cleaning pellet gun
JPS5714193A (en) * 1980-06-30 1982-01-25 Hitachi Ltd Distributing and controlling method of cleaning balls

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0580314A1 (fr) * 1992-07-24 1994-01-26 Matsui Manufacturing Co., Ltd. Procédé et dispositif de nettoyage de l'intérieur d'un tube
EP0581616A1 (fr) * 1992-07-31 1994-02-02 Petroleo Brasileiro S.A. - Petrobras Méthode d'enlèvement de liquide dans des systèmes de tubes, utilisant un tampon cylindrique mouvant

Also Published As

Publication number Publication date
ZA837035B (en) 1984-05-30
JPS59136182A (ja) 1984-08-04
EP0104520A3 (fr) 1988-01-13

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Inventor name: WOLFF, WILLI

Inventor name: KNICHELMANN, WINFRIED

Inventor name: BADER, EBERHARDT