EP0063287B1 - Dispositif de protection pour tuyaux - Google Patents

Dispositif de protection pour tuyaux Download PDF

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Publication number
EP0063287B1
EP0063287B1 EP82102816A EP82102816A EP0063287B1 EP 0063287 B1 EP0063287 B1 EP 0063287B1 EP 82102816 A EP82102816 A EP 82102816A EP 82102816 A EP82102816 A EP 82102816A EP 0063287 B1 EP0063287 B1 EP 0063287B1
Authority
EP
European Patent Office
Prior art keywords
means according
pipes
moisture
support
containers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82102816A
Other languages
German (de)
English (en)
Other versions
EP0063287A1 (fr
Inventor
Wilfried Dreyfuss
Thomas E. Remp
Kurt Müller
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19813114264 external-priority patent/DE3114264C2/de
Priority claimed from DE19813114368 external-priority patent/DE3114368C2/de
Application filed by Individual filed Critical Individual
Priority to AT82102816T priority Critical patent/ATE14045T1/de
Publication of EP0063287A1 publication Critical patent/EP0063287A1/fr
Application granted granted Critical
Publication of EP0063287B1 publication Critical patent/EP0063287B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D59/00—Plugs, sleeves, caps, or like rigid or semi-rigid elements for protecting parts of articles or for bundling articles, e.g. protectors for screw-threads, end caps for tubes or for bundling rod-shaped articles
    • B65D59/06—Caps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S138/00—Pipes and tubular conduits
    • Y10S138/06—Corrosion

Definitions

  • the invention relates to a protective device for pipes, the pipe ends of which are provided with a thread, according to the preamble of claim 1.
  • Pipes especially threaded oilfield pipes, are often exposed to various climatic conditions due to long transport routes and storage. As a result, they tend to rust on the inside.
  • the tubes are usually provided with protective caps at the ends to protect the threads.
  • closed protective caps and protective plugs are often used, which completely close the pipe on both sides. This in turn has the consequence that condensation forms with temperature fluctuations, which can increase the rust formation.
  • Chemical agents are known which have the property of absorbing moisture from the environment. Such agents are commonly called desiccants. It is also known to pack such desiccants in bags to protect the pipes and then to push these bags into the pipes, where they are stored just behind the pipe ends.
  • DE-U-1 812 073 and DE-U-1 820 105 show a sealing plug for the ends of steel pipes, which has a cavity open to the inside of the steel pipes, in which a drying agent for binding moisture is arranged.
  • a tape is known on which tablets are arranged in packaged form and which is provided with moisture indicators with a color display.
  • This tape has an adhesive layer on the side opposite the tablets and serves to keep closed cavities, for example containers for transporting sensitive measuring instruments, dry.
  • the present invention has for its object to provide a protective device for pipes so that corrosion, in particular rusting of the inner wall of the pipes is safely avoided and the previous, cumbersome, complex and expensive inspection can be dispensed with.
  • the design according to the invention makes it possible in a simple manner to introduce desiccants into pipes in such a way that reliable protection against moisture and thus against rust formation along the entire pipe is ensured.
  • the desiccant can be distributed in portions, filled into containers, along the inside of the tube with short, longer, even or uneven intervals. A continuous distribution along the inside of the pipe is also possible.
  • the handling and attachment of the device according to the invention is possible without essential aids and can also be done by auxiliary staff.
  • the thread protection device once screwed on can remain in the installed position due to the design according to the invention.
  • the inside of the pipe is checked by monitoring the moisture with the aid of a suitable moisture indicator.
  • reference numeral 2 denotes a pipe in which rust protection devices 4, 6, 8, 10 and 25 are arranged.
  • the rust protection device 4 according to FIG. Consists of a two-layer strip 12, in which cushions 14 are worked out, between which there are constrictions 16 and in which there is desiccant.
  • the rust protection device 6 according to FIG. 2 consists of a single-layer strip 18, on which cushions 20 are applied at certain intervals, for example by sewing, gluing or the like. Desiccant is again present in the pillows.
  • the rust protection device 8 according to FIG. 3 consists of bags 22 filled with desiccant, which are fastened at a distance from one another on a band or a cord 24, for example by tying or clipping.
  • the rust protection device 25 consists of a fleece strip 27 in which the desiccant is sewn in the form of tablets 29.
  • the cushions 14 and 20 and the bags 22 and the tablets 29 can also be arranged in an unevenly distributed manner apart from at regular intervals. It is also conceivable to arrange them from the pipe center to the pipe ends with increasing or decreasing distances (see FIG. 5).
  • the rust protection device 10 consists of a hose 26 filled with desiccant, the ends of which are closed.
  • a material that is permeable to moisture for example a fleece, is used as the material for the pillows, bags and the tube.
  • the rust protection devices 4, 6, 8, 10 and 25 are attached to the pipe ends.
  • the fastening takes place by means of the thread protection devices closing the pipe ends in the form of protective caps 30 or protective plugs 32, for example with the aid of hooks 34 arranged on the caps and eyelets 36 attached to the rust protection devices, cf. Fig. 5; Suitable clamping devices (not shown) can also be used.
  • FIG. 6 shows a tube 40 which has an external thread 42 at one end and an internal thread 44 at the other end.
  • a protective cap 46 is screwed onto the external thread and a protective plug 48 onto the internal thread.
  • the protective cap 46 has a jacket 52 provided with an internal thread 50 and a cup-shaped insert 54 with a bottom 56 which is connected to the jacket 52 via an annular web part 58 covering the tube edge. Grooves 60 are formed in the web part for attaching a tool.
  • the protective plug 48 is in the form of a cup-shaped insert with a jacket 62 and a bottom 64.
  • the jacket 62 has an external thread 65.
  • a moisture indicator device 68 or 70 is arranged in the bottom 56 of the protective cap and also in the bottom 64 of the protective plug. It is normally sufficient if such a moisture indicator is arranged in only one of the trays 56 and 64.
  • the moisture indicator device is a simple moisture indicator 71 which is arranged in the viewing window 72 of a threaded plug 74 which is screwed into the bottom of the protective device.
  • the moisture indicator is preferably arranged interchangeably.
  • the moisture indicator can also be an electrical moisture measuring device, to which a warning device can additionally be connected in order to indicate acoustically and, of course, optically that a certain moisture content has been reached.
  • the protective cap 46 and the protective plug 48 can, unlike in the drawing, also have bottoms which lie approximately in the plane of the web part 58 or the ring flanges 67.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Buffer Packaging (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
  • Packages (AREA)

Claims (12)

1. Dispositif de protection pour tuyaux (2), dont les extrémités (40) sont munies d'un filetage (42, 44), comprenant des dispositifs de protection filetés (30, 32. 46, 48), qui peuvent être vissés sur ou dans les extrémités (40) des tuyaux en vue de fermer de façon étanche à l'air les extrémités des tuyaux et qui comprennent un fond (56, 64) et une partie d'enveloppe (52, 62) munie d'un filetage (50, 65), et des enveloppes (14, 20, 22) contenant un agent de déshydratation pour assurer la fixation de l'humidité, qui peuvent être introduites dans les tuyaux (2), caractérisé par un support (12, 18, 24) pouvant être introduit dans les tuyaux et s'étendant sur la totalité de leur longueur, sur ou dans lequel sont disposés plusieurs enveloppes (14, 20, 22) laissant passer l'humidité, contenant l'agent de déshydratation, les unes derrière les autres, à des distances régulières, irrégulières ou variables, support qui peut être fixé aux deux extrémités (40) des tuyaux au moyen des dispositifs de protection filetés, ainsi qu'un dispositif indicateur d'humidité (68, 70) disposé dans le fond (56, 64) d'au moins un dispositif de protection fileté (30, 32, 46, 48).
2. Dispositif selon la revendication 1, caractérisé par le fait que les enveloppes sont consti- ' tuées par des sachets (22), des poches (14, 20) ou de petits paquets.
3. Dispositif selon la revendication 1 ou 2, caractérisé par le fait que le support est constitué par un ruban (24), une cordelette, une corde, un ruban (12, 18), une barre ou analogue.
4. Dispositif selon la revendication 2 ou 3, caractérisé par le fait que les sachets (22), les poches (14, 20) ou les petits paquets sont fixés au ruban (24), à la cordelette, à la corde, à la bande (12, 18) ou à la barre.
5. Dispositif selon la revendication 4, caractérisé par le fait que la fixation est réalisée par ligature, agrafage, collage, adhérence, couture, soudage.
6. Dispositif selon la revendication 1, caractérisé par le fait que le support est un ruban à deux couches ou une bande à couche unique (12), dans lequel sont réalisées des cavités (14) formant des enveloppes, séparées les unes des autres, en forme de poches, et remplies d'un agent de déshydratation.
7. Dispositif selon la revendication 1, caractérisé par le fait que le récipient (26) est un dispositif du type tuyau flexible lequel forme simultanément le support.
8. Dispositif selon la revendication 1, caractérisé par le fait que le support est une bande de feutre (27) dans laquelle l'agent de déshydratation est cousu sous forme de tablettes (29).
9. Dispositif selon l'une quelconque des revendications 1, 2, 4, 6 ou 8, caractérisé par le fait que les distances entre enveloppes (14, 20, 22) ou tablettes (29) vont en augmentant ou en diminuant depuis l'extrémité du support jusqu'au milieu de support, ou depuis les extrémités (40) des tuyaux jusqu'au milieu des tuyaux.
10. Dispositif selon la revendication 1, caractérisé par le fait que le dispositif indicateur d'humidité est un dispositif de mesure d'humidité et avertisseur d'humidité disposé de façon étanche à l'air et lisible de l'extérieur.
11. Dispositif selon la revendication 10, caractérisé par le fait que le dispositif de mesure d'humidité et avertisseur d'humidité (68, 70) est un indicateur d'humidité (71) à affichage coloré pour diverses plages d'humidité, disposé dans un bouchon fileté (74) à fenêtre d'inspection (72) qui est vissé dans le fond (56, 64) du dispositif de protection fileté (46, 48).
12. Dispositif selon la revendication 11, caractérisé par le fait que l'indicateur d'humidité (71) est disposé de façon interchangeable dans la fenêtre d'inspection (72) du bouchon fileté (74).
EP82102816A 1981-04-09 1982-04-02 Dispositif de protection pour tuyaux Expired EP0063287B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82102816T ATE14045T1 (de) 1981-04-09 1982-04-02 Schutzvorrichtung fuer rohre.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3114368 1981-04-09
DE19813114264 DE3114264C2 (de) 1981-04-09 1981-04-09 Rostschutzeinrichtung für die Innenfläche von Rohren unter Verwendung eines Trocknungsmittels
DE3114264 1981-04-09
DE19813114368 DE3114368C2 (de) 1981-04-09 1981-04-09 Schutzkappe bzw. Schutzstopfen für mit Gewinde versehene Enden von Rohren

Publications (2)

Publication Number Publication Date
EP0063287A1 EP0063287A1 (fr) 1982-10-27
EP0063287B1 true EP0063287B1 (fr) 1985-06-26

Family

ID=25792558

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82102816A Expired EP0063287B1 (fr) 1981-04-09 1982-04-02 Dispositif de protection pour tuyaux

Country Status (3)

Country Link
US (1) US4438783A (fr)
EP (1) EP0063287B1 (fr)
DE (1) DE3264397D1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5211206A (en) * 1989-07-07 1993-05-18 Cougar Tools Inc. Apparatus for securing written information to tubular goods
US5303743A (en) * 1991-05-08 1994-04-19 Vincent Larry W Thread protection system
US5352383A (en) * 1991-10-18 1994-10-04 Centrax International Corp. Corrosion inhibitor and sealable thread protector end cap for tubular goods
DE20103745U1 (de) * 2001-03-03 2002-07-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 80636 München Bauteil
US20080189869A1 (en) * 2007-02-08 2008-08-14 3M Innovative Properties Company Securing unit
US9915433B2 (en) * 2014-05-30 2018-03-13 Amtrol Licensing Inc. Moisture detecting air cap indicator for expansion tank failure

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1705837A (en) * 1928-04-30 1929-03-19 Rowan Colonel Glenn Thermostat-controlled alarm
US2737205A (en) * 1952-08-28 1956-03-06 Fullerton Mfg Company Means for protectively isolating internal pipe surfaces
US3052083A (en) * 1953-12-22 1962-09-04 Piquerez Ervin Waterproof watchcase with moisture indicator
US2716338A (en) * 1954-04-08 1955-08-30 Welford C Blinn Button type package humidity indicator
US2826222A (en) * 1954-10-29 1958-03-11 James W Case Preservative closure
US2977993A (en) * 1957-11-27 1961-04-04 Texas Pipe Line Company Non-metallic pipe end closure
US3085424A (en) * 1959-11-17 1963-04-16 Ansul Chemical Co Moisture indicator housing
DE1820105U (de) * 1960-05-13 1960-10-20 Luther Werke Luther & Jordan Korrosionsschutzorgan fuer lagernde stahlrohre.
US3115010A (en) * 1960-12-12 1963-12-24 Thiokol Chemical Corp Closure for container
US3246758A (en) * 1963-01-30 1966-04-19 Watsco Inc Hygrometric indicator for desiccants
FR1398104A (fr) * 1964-03-26 1965-05-07 Participations Et Procedes Ind éléments déshydratants et leur procédé de fabrication
US3260234A (en) * 1964-12-11 1966-07-12 Gen Dynamics Corp Desiccant tape
SE358383B (fr) * 1967-12-06 1973-07-30 Sandoz Ag
US4124116A (en) * 1977-02-15 1978-11-07 Mccabe Jr Edward G Liquid absorbing sectional pack

Also Published As

Publication number Publication date
US4438783A (en) 1984-03-27
DE3264397D1 (en) 1985-08-01
EP0063287A1 (fr) 1982-10-27

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