EP0063287A1 - Protection device for pipes - Google Patents

Protection device for pipes Download PDF

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Publication number
EP0063287A1
EP0063287A1 EP82102816A EP82102816A EP0063287A1 EP 0063287 A1 EP0063287 A1 EP 0063287A1 EP 82102816 A EP82102816 A EP 82102816A EP 82102816 A EP82102816 A EP 82102816A EP 0063287 A1 EP0063287 A1 EP 0063287A1
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EP
European Patent Office
Prior art keywords
moisture
protection device
pipes
threaded
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.)
Granted
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EP82102816A
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German (de)
French (fr)
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EP0063287B1 (en
Inventor
Wilfried Dreyfuss
Thomas E. Remp
Kurt Müller
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Individual
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Individual
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Publication date
Priority claimed from DE19813114368 external-priority patent/DE3114368C2/en
Priority claimed from DE19813114264 external-priority patent/DE3114264C2/en
Application filed by Individual filed Critical Individual
Priority to AT82102816T priority Critical patent/ATE14045T1/en
Publication of EP0063287A1 publication Critical patent/EP0063287A1/en
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Publication of EP0063287B1 publication Critical patent/EP0063287B1/en
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    • 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 are provided with a thread.
  • 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 dispense such desiccants into bags to protect the tubes pack. and then push these bags into the tubes, where they are stored just behind the tube ends.
  • the present invention is therefore based on the object of designing a protective device in such a way that corrosion, in particular rusting of the inner wall of the tubes is reliably avoided and, furthermore, the previous, cumbersome, complex and expensive inspection can be avoided.
  • 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 distribution of the desiccant can in portions, filled in 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 protective device (protective cap and protective plug) once screwed on can remain in the installed position.
  • the inside of the pipe is checked by monitoring the moisture with the aid of a suitable moisture indicator.
  • a measuring and warning device can also be installed, which emits an optical or acoustic warning signal when a predetermined moisture level is reached.
  • the inventive design eliminates the complex and therefore expensive removal of the protective device for the purpose of inspecting the inside of the pipe; With the help of the built-in moisture indicator, it can be immediately recognized whether or not there is a degree of moisture in the interior of the pipe that allows rusting.
  • 1 to 5 of the drawing show different embodiments of the protective device according to the invention and their arrangement in a tube.
  • FIG. 6 shows a device designed according to the invention for displaying the moisture in a tube.
  • reference numeral 2 denotes a tube in which rust protection devices 4, 6, 8, 10 and 25 are arranged.
  • the rust protection device 4 according to FIG. 1 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 Sew on, stick on 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 drying agent 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 (cf. FIG. 5).
  • the rust-proofing device 1 0 in FIG. 4 is a Aeus filled with desiccant tube 26 whose ends 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 preferably attached to the pipe ends (not shown).
  • the attachment can take place, for example, on the protective caps 3o or protective plugs 32 which usually close the pipe ends, for example with the aid of hooks 34 arranged on the caps and on the anti-rust device attached eyelets 36, cf. Fig. 5; Suitable clamping devices (not shown) can also be used.
  • Fig. 6 shows a tube 40 , which carries 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 6o are formed in the web part for attaching a tool.
  • the protective plug 10 is designed 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.

Abstract

Um die Innenfläche von insbesondere mit Gewinde versehenen Rohren, deren Gewinde-Rohrenden zum luftdichten Abschluß mit einer Gewindeschutzvorrichtung versehen sind, gegen Rostbildung zu schutzen, ist ein in die Rohre einbringbarer Träger, beispielsweise in Form eines Streifens, vorgesehen, an dem mehrere Behältnisse beabstandet hintereinander angeordnet sind. Die Behältnisse sind mit Trockenmittel gefüllt und bestehen aus feuchtigkeitsdurchlässigem Material. Der Träger wird vorzugsweise an den beiden Rohrenden befestigt. Im Boden der Gewindeschutzvorrichtung ist eine Feuchtigkeitsanzeigeeinrichtung angeordnet.In order to protect the inner surface of, in particular, threaded pipes, the threaded pipe ends of which are provided with a thread protection device for airtight closure, a support can be inserted into the pipes, for example in the form of a strip, on which several containers are spaced one behind the other are arranged. The containers are filled with desiccant and are made of moisture-permeable material. The carrier is preferably attached to the two pipe ends. A moisture display device is arranged in the bottom of the thread protection device.

Description

Die Erfindung betrifft eine Schutzvorrichtung für Rohre, deren Rohrenden mit einem Gewinde versehen sind.The invention relates to a protective device for pipes, the pipe ends are provided with a thread.

Rohre, insbesondere mit Gewinde versehene Ölfeldrohre, werden häufig durch lange Transportwege und Lagerung verschiedenen klimatischen Bedingungen ausgesetzt. Sie neigen infolgedessen vor allem an der Innenseite zur Rostbildung. Die Rohre werden üblicherweise an den Enden mit Schutzkappen versehen, um die Gewinde zu schützen. Um ferner zu verhindern, daß Fremdkörper oder Regenwasser in das Innere der Rohre gelangt, werden häufig geschlossene Schutzkappen und Schutzstopfen verwendet, die das Rohr vollständig an beiden Seiten verschließen. Dies wiederum hat zur Folge, daß sich bei Temperaturschwankungen Schwitzwasser bildet, das die Rostbildung verstärken kann. Es sind chemische Mittel bekannt, die die Eigenschaft haben, Feuchtigkeit aus der Umgebung aufzunehmen. Solche Mittel werden allgemein Trockenmittel genannt. Es ist auch bekannt, zum Schutz der Rohre solche Trockenmittel in Beutel abzupacken.und diese Beutel dann in die Rohre zu schieben, wo sie kurz hinter den Rohrenden lagern. Es hat sich nun gezeigt, daß diese bekannten Schutzeinrichtungen nicht ausreichen, die Rohre vor Rostbildung zu schützen. Es hat sich nämlich gezeigt, daß in Rohren, insbesondere größerer Länge, die Feuchtigkeit von dem Trockenmittel nur aus der näheren Umgebung der Beutel aufgenommen wird, und daß die weiter innen liegenden Innenrohrflächen rosten. Ferner ist es notwendig, die Rohre von Zeit zu Zeit zu inspizieren. Hierzu werden bisher in recht umständlicher, zeitraubender und teurer Art und Weise jeweils die Schutzkappen und Schutzstopfen abgeschraubt bzw. abgenommen; das Rohrinnere wird dann optisch überprüft.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. To further prevent foreign bodies or rainwater from getting inside the pipes, 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 dispense such desiccants into bags to protect the tubes pack. and then push these bags into the tubes, where they are stored just behind the tube ends. It has now been shown that these known protective devices are not sufficient to protect the pipes from rusting. It has been shown that in tubes, in particular of greater length, the moisture is only absorbed by the desiccant from the vicinity of the bag, and that the inner tube surfaces lying inward rust. It is also necessary to inspect the pipes from time to time. For this purpose, the protective caps and protective plugs have so far been unscrewed or removed in a rather cumbersome, time-consuming and expensive manner; the inside of the pipe is then checked visually.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Schutzeinrichtung so auszubilden, daß eine Korrosion, insbesondere ein Rosten der Innenwandung der Rohre sicher vermieden ist und ferner die bisherige, umständliche, aufwendige und teure Inspektion vermieden werden kann.The present invention is therefore based on the object of designing a protective device in such a way that corrosion, in particular rusting of the inner wall of the tubes is reliably avoided and, furthermore, the previous, cumbersome, complex and expensive inspection can be avoided.

Diese Aufgabe wird durch die im Kennzeichen des Anspruchs 1 angegebene Ausbildung gelöst.This object is achieved by the training specified in the characterizing part of claim 1.

Durch die erfindungsgemäße Ausbildung ist es auf einfache Weise möglich, Trockenmittel definiert in Rohre so einzubringen, daß ein sicherer Schutz gegen Feuchtigkeit und damit gegen Rostbildung entlang des ganzen Rohres gewährleistet ist. Die Verteilung des Trockenmittels kann portionsweise, abgefüllt in Behältnisse, entlang des Rohrinneren mit kurzen, längeren, gleichmäßigen oder ungleichmäßigen Abständen erfolgen. Eine kontinuierliche Verteilung entlang des Rohrinneren ist auch möglich. Die Handhabung und Anbringung der erfindungsgemäßen Einrichtung ist ohne wesentliche Hilfsmittel möglich und kann auch von Hilfskräften erfolgen.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 distribution of the desiccant can in portions, filled in 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.

Durch die erfindungsgemäße Ausbildung kann die einmal aufgeschraubte Schutzvorrichtung (Schutzkappe und Schutzstopfen) in der Einbaulage verbleiben. Die Kontrolle des Rohrinneren erfolgt durch Überwachung der Feuchtigkeit mit Hilfe einer geeigneten Feuchtigkeitsanzeigeeinrichtung. Eine Meß- und Warneinrichtung kann ebenfalls eingebaut sein, die bei Erreichen eines vorbestimmten Feuchtigkeitsgrades ein optisches oder akustisches Warnsignal abgibt. Durch die erfindungsgemäße Ausbildung entfällt das aufwendige und damit teure Abnehmen der Schutzvorrichtung zwecks Inspektion des Rohrinneren; mit Hilfe der eingebauten Feuchtigkeitsanzeigeeinrichtung kann sofort erkannt werden, ob im Rohrinneren ein die Rostbildung zulassender Feuchtigkeitsgrad herrscht oder nicht.Due to the inventive design, the protective device (protective cap and protective plug) once screwed on can remain in the installed position. The inside of the pipe is checked by monitoring the moisture with the aid of a suitable moisture indicator. A measuring and warning device can also be installed, which emits an optical or acoustic warning signal when a predetermined moisture level is reached. The inventive design eliminates the complex and therefore expensive removal of the protective device for the purpose of inspecting the inside of the pipe; With the help of the built-in moisture indicator, it can be immediately recognized whether or not there is a degree of moisture in the interior of the pipe that allows rusting.

Zweckmäßige und vorteilhafte Weiterbildungen der erfindungsgemäßen Lösung sind in den Unteransprüchen gekennzeichnet.Appropriate and advantageous developments of the solution according to the invention are characterized in the subclaims.

Zweckmäßige und einfach herzustellende Behältnisse und Träger sowie deren Verbindung sind in den Ansprüchen 3 bis 6 angegeben.Appropriate and easy to manufacture containers and carriers and their connection are specified in claims 3 to 6.

Die Weiterbildungen nach den Ansprüchen 7, 8 und 10 geben besonders vorteilhaft herstellbare und einsetzbare erfindungsgemäße Einrichtungen wieder.The further developments according to claims 7, 8 and 1 0 give particularly advantageous to produce and which can be used according to the invention means again.

Zweckmäßige und vorteilhafte Feuchtigkeitsanzeigeeinrichtungen sind in den Unteransprüchen 13 und 14 angegeben. Diese Anzeigeeinrichtungen sind preiswert in der Herstellung, einfach zu installieren und geben den Feuchtigkeitsgehalt mit ausreichender Genauigkeit an.Appropriate and advantageous moisture indicating devices are specified in the subclaims 13 and 14. These display devices are inexpensive to manufacture, easy to install and indicate the moisture content with sufficient accuracy.

Die Erfindung soll nun anhand der beigefügten Zeichnung, in der einige Ausführungsbeispiele dargestellt sind, näher erläutert werden.The invention will now be explained in more detail with reference to the accompanying drawing, in which some exemplary embodiments are shown.

, Die Fig. 1 bis 5 der Zeichnung zeigen verschiedene Austührungsformen der erfindungsgemäßen Schutzvorrichtung und deren Anordnung in einem Rohr.1 to 5 of the drawing show different embodiments of the protective device according to the invention and their arrangement in a tube.

Die Fig. 6 zeigt eine erfindungsgemäß ausgebildete Einrichtung zur Anzeige der Feuchtigkeit in einem Rohr.6 shows a device designed according to the invention for displaying the moisture in a tube.

In den Fig. 1 bis 5 ist mit dem Bezugszeichen 2 ein Rohr bezeichnet, in dem Rostschutzeinrichtungen 4, 6, 8, 1o und 25 angeordnet sind. Die Rostschutzeinrichtung 4 nach Fig. 1 besteht aus einem zweilagigen Streifen 12, in dem Kissen 14 ausgearbeitet sind, zwischen denen sich Einschnürungen 16 befinden und in denen sich Trockenmittel befindet.1 to 5, reference numeral 2 denotes a tube in which rust protection devices 4, 6, 8, 10 and 25 are arranged. The rust protection device 4 according to FIG. 1 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.

Die Rostschutzeinrichtung 6 nach Fig. 2 besteht aus einem einlagigen Streifen 18, auf dem Kissen 2o in bestimmten Abständen aufgebracht sind, beispielsweise durch Annähen, Aufkleben oder dergleichen. In den Kissen ist wiederum Trockenmittel vorhanden .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 Sew on, stick on or the like. Desiccant is again present in the pillows.

Die Rostschutzeinrichtung 8 nach Fig. 3 besteht aus mit Trockenmittel gefüllten Beuteln 22, die mit Abstand zueinander an einem Band oder einer Kordel 24 befestigt sind, beispielsweise durch Festbinden oder Anklammern.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.

Die Rostschutzeinrichtung 25 nach Fig. 5 besteht aus einem Vliesstreifen 27, in dem das Trockenmittel in Form von Tabletten 29 eingenäht ist.The rust protection device 25 according to FIG. 5 consists of a fleece strip 27 in which the drying agent is sewn in the form of tablets 29.

Die Kissen 14 und 2o und die Beutel 22 sowie die Tabletten 29 können außer in gleichmäßigen Abständen auch ungleichmäßig verteilt angeordnet sein. Es ist auch denkbar, sie von der Rohrmitte zu den Rohrenden hin mit zu-oder abnehmenden Abständen (vgl. Fig. 5) anzuordnen.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 (cf. FIG. 5).

Die Rostschutzeinrichtung 10 nach Fig. 4 besteht äus einem mit Trockenmittel gefüllten Schlauch 26, dessen Enden verschlossen sind.The rust-proofing device 1 0 in FIG. 4 is a Aeus filled with desiccant tube 26 whose ends are closed.

Als Material für die Kissen, Beutel und den Schlauch dient ein für Feuchtigkeit durchlässiges Material, beispielsweise ein Vlies.A material that is permeable to moisture, for example a fleece, is used as the material for the pillows, bags and the tube.

Die Rostschutzeinrichtungen 4, 6, 8, 1o und 25 sind vorzugsweise an den Rohrenden befestigt (nicht dargestellt). Die Befestigung kann beispielsweise an den üblicherweise die Rohrenden verschließenden Schutzkappen 3o oder Schutzstopfen 32 erfolgen, beispielsweise mit Hilfe von an den Kappen angeordneten Haken 34 und an den Rostschutzeinrichtungen angebrachten Ösen 36 , vgl. Fig. 5; auch geeignete Klemmeinrichtungen (nicht dargestellt) können eingesetzt werden.The rust protection devices 4, 6, 8, 10 and 25 are preferably attached to the pipe ends (not shown). The attachment can take place, for example, on the protective caps 3o or protective plugs 32 which usually close the pipe ends, for example with the aid of hooks 34 arranged on the caps and on the anti-rust device attached eyelets 36, cf. Fig. 5; Suitable clamping devices (not shown) can also be used.

Bei Rohren größeren Durchmessers ist es zweckmäßig, mehrere der Rostschutzeinrichtungen 4, 6, 8, 10 oder 25 in den Rohren nebeneinander anzuordnen.In the case of pipes of larger diameter, it is expedient to arrange several of the rust protection devices 4, 6, 8, 10 or 25 next to one another in the pipes.

Die Fig. 6 zeigt ein Rohr 40, das an einem Ende ein Außengewinde 42 und am anderen Ende ein Innengewinde 44 trägt. Auf das Außengewinde ist eine Schutzkappe 46 und auf das Innengewinde ein Schutzstopfen 48 geschraubt.Fig. 6 shows a tube 40 , which carries 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.

Die Schutzkappe 46 weist einen mit einem Innengewinde 5o versehenen Mantel 52 und einen becherförmigen Einsatz 54 mit einem Boden 56 auf, der mit dem Mantel 52 über einen den Rohrrand überdeckenden, ringförmigen Stegteil 58 verbunden ist. Im Stegteil sind Nuten 6o ausgebildet zum Ansetzen eines Werkzeugs.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 6o are formed in the web part for attaching a tool.

Der Schutzstopfen 1o ist in Form eines becherförmigen Einsatzes ausgebildet mit einem Mantel 62 und einem Boden 64. Der Mantel 62 weist ein Außengewinde 65 auf. Ein Ringflansch 67, in dem Nuten 66 zum Ansetzen eines Werkzeugs ausgebildet sind, überdeckt den Rohrrand.The protective plug 10 is designed in the form of a cup-shaped insert with a jacket 62 and a bottom 64. The jacket 62 has an external thread 65. An annular flange 67, in which grooves 66 are formed for attaching a tool, covers the pipe edge.

Im Boden 56 der Schutzkappe und auch im Boden 64 des Schutzstopfens ist jeweils eine Feuchtigkeitsanzeigeeinrichtung 68 bzw. 7o angeordnet. Es ist normalerweise ausreichend, wenn nur in einem der Böden 56 und 64 eine solche Feuchtigkeitsanzeigeeinrichtung angeordnet ist.In the bottom 56 of the protective cap and also in the bottom 64 of the protective plug, a moisture indicator device 68 or 70 is arranged. It is normally sufficient if such a moisture indicator is arranged in only one of the trays 56 and 64.

Die Feuchtigkeitsanzeigeeinrichtung ist in der Zeichnung ein einfacher Feuchtigkeitsindikator 71, der im Sichtfenster 72 eines Gewindestopfens 74 angeordnet ist, der in den Boden der Schutzvorrichtung eingeschraubt ist. Der Feuchtigkeitsindikator ist vorzugsweise austauschbar angeordnet.In the drawing, 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.

Die Feuchtigkeitsanzeige kann auch ein elektrisches Feuchtigkeitsmeßgerät sein, an das zusätzlich noch eine Warneinrichtung angeschlossen sein kann, um das Erreichen eines bestimmten Feuchtigkeitsgehaltes akustisch und natürlich auch optisch anzuzeigen.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.

Die Schutzkappe 46 und der Schutzstopfen 48 können anders als in der Zeichnung dargestellt auch Böden aufweisen, die in etwa in der Ebene des Stegteiles 58 bzw. der Ringflansche 67 liegen.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.

Claims (14)

1. Schutzvorrichtung für Rohre, deren Rohrenden mit einem Gewinde versehen sind, gekennzeichnet durch die Kombination aus einer Gewindeschutzvorrichtung (46, 48), die auf oder in die Rohrenden (4o) auf- oder einschraubbar ist zum luftdichten Abschluß der Rohrenden und die einen Boden (56, 64) und ein mit einem Gewinde (50, 65) versehenes Mantelteil (52, 62) aufweist, einer in den Rohren angeordneten Rostschutzeinrichtung (4, 6, 8, 10, 25) sowie einer im Boden der Gewindeschutzvorrichtung angebrachten Feuchtigkeitsanzeigeeinrichtung (68, 7o).1. Protection device for pipes, the pipe ends are provided with a thread, characterized by the combination of a thread protection device (46, 48), which can be screwed onto or into the pipe ends (4o) for airtight closure of the pipe ends and the one bottom (56, 64) and a threaded part (50, 65) provided jacket part (52, 62), a rust protection device (4, 6, 8, 1 0 , 25) arranged in the tubes and a moisture indicator device mounted in the bottom of the thread protection device (68, 7o). 2. Schutzvorrichtung, insbesondere für die Innenfläche von Rohren, unter Verwendung eines Trockenmittels, das in feuchtigkeitsdurchlässigen Behältnissen verpackt ist,nach Anspr.1, dadurch gekennzeichnet, daß mehrere Behältnisse (14, 20, 22) hintereinander, in gleichmäßigen, unregelmäßigen oder sich ändernden Abständen an oder in einem in die Rohre einbringbaren Träger (12, 18, 24) angeordnet sind.2. Protection device, in particular for the inner surface of pipes, using a desiccant which is packaged in moisture-permeable containers, according to Anspr.1, characterized in that several containers (14, 2 0 , 22) one behind the other, in uniform, irregular or themselves changing distances are arranged on or in a support (12, 18, 24) that can be inserted into the tubes. 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Behältnisse Beutel, Kissen oder Päckchen sind.3. Apparatus according to claim 2, characterized in that the containers are bags, pillows or packets. 4. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Träger ein Band, eine Kordel, eine Schnur, ein Streifen, ein Stab oder dergleichen ist.4. The device according to claim 2, characterized in that the carrier is a ribbon, a cord, a cord, a strip, a rod or the like. 5. Vorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Beutel (22) oder Kissen (14, 20) oder Päckchen am Band, an der Kordel, an der Schnur, am Streifen oder an dem Stab befestigt sind.5. Apparatus according to claim 2 or 3, characterized in that the bags (22) or pillows (14, 2 0 ) or parcels are attached to the tape, on the cord, on the cord, on the strip or on the rod. 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Befestigung durch Anbinden, Anklammern, Ankleben, Anheften, Annähen, Anschweißen erfolgt.6. The device according to claim 5, characterized in that the attachment is carried out by tying, clipping, gluing, tacking, sewing, welding. 7. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß in einem zweilagigen Band oder zweilagigen Streifen kissenartige,.mit Trockenmittel gefüllte, beabstandete Hohlräume ausgebildet sind.7. Device according to one of the preceding claims, characterized in that pillow-like, filled with drying agent, spaced cavities are formed in a two-layer band or two-layer strips. 8. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß das Behältnis (26) eine schlauchartige Einrichtung ist, die gleichzeitig Träger ist.8. The device according to claim 2, characterized in that the container (26) is a hose-like device which is also a carrier. 9. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Träger an den beiden Enden der Rohre befestigt ist.9. Device according to one of the preceding claims, characterized in that the carrier is attached to the two ends of the tubes. 10. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Trockenmittel in Form von Tabletten in einen Vliesstreifen eingenäht ist.1 0 . Device according to one of the preceding claims, characterized in that the drying agent is sewn in the form of tablets in a non-woven strip. 11. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Abstände zwischen aufeinanderfolgenden Behältnissen oder Tabletten von dem Trägerende bis zur Trägermitte bzw. von den Rohrenden bis zur Rohrmitte zu- oder abnehmen.11. Device according to one of the preceding claims, characterized in that the distances between successive containers or tablets from the support end to the support center or from the tube ends to the tube center increase or decrease. 12. Schutzvorrichtung für Rohre zum Auf- oder Einschrauben auf bzw. in mit einem Gewinde versehene Rohrenden, mit einem mit einem Gewinde versehenen Mantelteil und mit einem Boden nach Anspruch 1, dadurch qekennzeichnet, daß im Boden wenigstens einer Schutzvorrichtung (8, 10) eine von außen ablesbare Feuchtigkeitsmeß- und Feuchtigkeitswarneinrichtung luftdicht angeordnet ist.12. Protection device for pipes for screwing or screwing onto or into threaded pipe ends, with a threaded jacket part and with a bottom according to claim 1, characterized in that at least one protective device (8, 1 0 ) in the bottom an externally readable moisture measuring and moisture warning device is arranged airtight. 13. Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, daß die Feuchtigkeitsanzeigeeinrichtung ein Feuchtigkeitsindikator mit Farbanzeige für verschiedene Feuchtigkeitsbereiche ist, der in einem Gewindestopfen mit Sichtfenster angeordnet ist, welcher in den Boden der Schutzvorrichtung eingeschraubt ist.13. The apparatus according to claim 12, characterized in that the moisture display device is a moisture indicator with color display for different moisture ranges, which is arranged in a threaded plug with a window, which is screwed into the bottom of the protective device. 14. Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, daß der Feuchtigkeitsindikator auswechselbar im Sichtfenster des Gewindestopfens angeordnet ist.14. The apparatus according to claim 13, characterized in that the moisture indicator is interchangeably arranged in the viewing window of the threaded plug.
EP82102816A 1981-04-09 1982-04-02 Protection device for pipes Expired EP0063287B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82102816T ATE14045T1 (en) 1981-04-09 1982-04-02 PROTECTION DEVICE FOR PIPES.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3114264 1981-04-09
DE3114368 1981-04-09
DE19813114368 DE3114368C2 (en) 1981-04-09 1981-04-09 Protective cap or protective plug for threaded ends of pipes
DE19813114264 DE3114264C2 (en) 1981-04-09 1981-04-09 Rust protection device for the inner surface of pipes using a desiccant

Publications (2)

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

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EP82102816A Expired EP0063287B1 (en) 1981-04-09 1982-04-02 Protection device for pipes

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US (1) US4438783A (en)
EP (1) EP0063287B1 (en)
DE (1) DE3264397D1 (en)

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US5352383A (en) * 1991-10-18 1994-10-04 Centrax International Corp. Corrosion inhibitor and sealable thread protector end cap for tubular goods
DE20103745U1 (en) * 2001-03-03 2002-07-04 Fraunhofer Ges Forschung component
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

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Also Published As

Publication number Publication date
EP0063287B1 (en) 1985-06-26
US4438783A (en) 1984-03-27
DE3264397D1 (en) 1985-08-01

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