[go: up one dir, main page]

EP1784602B1 - Collector line for leakage monitoring and leakage location - Google Patents

Collector line for leakage monitoring and leakage location Download PDF

Info

Publication number
EP1784602B1
EP1784602B1 EP06706652A EP06706652A EP1784602B1 EP 1784602 B1 EP1784602 B1 EP 1784602B1 EP 06706652 A EP06706652 A EP 06706652A EP 06706652 A EP06706652 A EP 06706652A EP 1784602 B1 EP1784602 B1 EP 1784602B1
Authority
EP
European Patent Office
Prior art keywords
electrically conductive
leakage
conductive layer
substance
collecting conduit
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 - Lifetime
Application number
EP06706652A
Other languages
German (de)
French (fr)
Other versions
EP1784602A1 (en
Inventor
Wolfgang Issel
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.)
Areva GmbH
Original Assignee
Areva NP 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 Areva NP GmbH filed Critical Areva NP GmbH
Publication of EP1784602A1 publication Critical patent/EP1784602A1/en
Application granted granted Critical
Publication of EP1784602B1 publication Critical patent/EP1784602B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F17D5/02—Preventing, monitoring, or locating loss
    • F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F17D5/02—Preventing, monitoring, or locating loss
    • F17D5/04—Preventing, monitoring, or locating loss by means of a signalling fluid enclosed in a double wall

Definitions

  • the invention relates to a manifold for leakage monitoring and leak detection on a system. Moreover, the invention relates to a device and a method for leakage monitoring and leak detection on a system in which such a manifold is used.
  • a manifold which consists of a support tube, which is provided on its outer surface with a permeable layer through which a leaking from a leakage in the plant, such as a pipeline, in the vicinity of the manifold and substance to diffuse can diffuse.
  • the support tube is impermeable to this substance and is provided with openings so that the substance can reach the interior of the manifold.
  • the material which has penetrated into the collecting line together with a carrier gas located in the collecting line is fed to a sensor likewise connected to the collecting line with a pump connected to the collecting line.
  • a known flow rate can from the time between switching on the pump and the arrival of the substance at the sensor, the place where the substance penetrates into the manifold and thus the leak location are determined at the plant part.
  • the carrier gas is therefore only at longer intervals or interrogation intervals, for example every 6 to 24 h, transported through the manifold, so that between the occurrence of a leak and its discovery in the most unfavorable Case can be a period of time, which is composed of the time interval between two consecutive measurements and the time required for the penetrated substance from the beginning of the pumping process to the arrival at the sensor.
  • a period of time of the order of many hours may be associated with considerable irreversible damage both to the system and to the environment, especially in the case of larger leaks.
  • the invention is based on the object to provide a manifold for leakage monitoring and leakage location, with the time without any additional installation effort between the occurrence of leakage and its detection or location can be reduced.
  • the invention is based on the object to provide a device for leakage monitoring and leak detection with such a manifold.
  • the invention is also based on the object to provide a method for leakage monitoring and leak detection, with the use of such a manifold, the time between leakage location and occurrence of the leakage is reduced.
  • the manifold includes an apertured support tube which is covered on its inner or outer surface by a layer at least one longitudinally of the support tube extending portion is permeable to a substance to be monitored, and having an extending in its longitudinal direction electrically conductive layer into which the substance can at least penetrate and whose ohmic resistance depends on the material penetrating into it.
  • the occurrence of a substance emerging in the event of a leakage can be monitored permanently by measuring the resistance of the electrically conductive, material-sensitive layer between two measuring points that are widely spaced from one another. In other words, there may be a permanent leak monitoring that is independent of the times when a pump connected to the manifold is turned on.
  • the electrically conductive layer consists of a filled with carbon black polymer material.
  • ethylene vinyl acetate EVA is suitable as the polymeric base material, which is permeable to a large number of substances as well as having sufficiently good electrical conductivity (low specific ohmic resistance) by admixing carbon black, preferably between 20 and 25% by weight. It has surprisingly been found that the addition of carbon black reduces the permeability at most to a reasonable extent.
  • the electrically conductive layer may completely cover the inner or outer surface of the support tube cover.
  • the electrically conductive layer can also be used to monitor the bus for mechanical destruction, such as breakage.
  • the electrically conductive layer is surrounded by an electrically insulating permeable layer that is permeable to the substance, with sufficient tightness of the manifold, a reduction in the permeation rate caused by the carbon black addition can be reduced since the electrically conductive permeable layer has only one thickness which is limited to the extent necessary for monitoring the electrical resistance or the electrical conductivity.
  • the electrically conductive permeable layer is electrically isolated from the environment, so that the manifold can be laid in the ground or in contact with electrically conductive parts of the plant.
  • the object according to the invention is in each case achieved with a device or a method having the features of the subclaims 8 and 9, respectively.
  • the time lapse between the occurrence of a leakage and the leakage location is reduced by using a resistance increase as a trigger signal for performing a leak detection measurement, in which a fluid carrier medium is pumped through the manifold and at a Sensor for one at leakage leakage is analyzed.
  • a leakage location is thus no longer exclusively at fixed time intervals but additionally or only if the occurrence of a leakage is detected by the resistance measurement.
  • Fig. 1 comprises a manifold 1, a support tube 2, for example made of PVC, which is provided with a plurality of radial openings 4.
  • a support tube 2 for example made of PVC, which is provided with a plurality of radial openings 4.
  • an electrically conductive layer 6 is arranged, which completely covers the support tube 2 and is permeable to a substance L to be detected.
  • the electrically conductive layer 6 is substance-sensitive, ie its (specific) electrical resistance is dependent on the presence of the substance L.
  • the electrically conductive layer 6 consists of a polymer material filled with electrically conductive particles, which is an electrically insulating polymeric base material to which conductive particles, in the example carbon black particles, are added to bring about an electrical conductivity.
  • the electrically conductive layer 6 is surrounded by an electrically non-conductive, also permeable to the substance layer 8, which preferably consists of the same polymeric base material.
  • a suitable polymeric base material for the electrically conductive layer 6 depends on the substance L emerging and to be detected in the event of a leakage. In principle, all polymeric base materials are suitable, through which the substance L to be detected can pass on the one hand and undergo a structural change, for example swelling, due to the material entering it in order thus to break bridges between the electrically conductive particles and those based on these bridges to deteriorate electrical conductivity of the mixed with the conductive particles polymeric material.
  • the amount of carbon black required in practice depends on the one hand on the polymeric base material and on the other hand on the length of the manifold, in order to achieve detectable electrical resistance values, for example in the range of a few M ⁇ , with low metrological outlay.
  • hydrocarbon compounds especially oils, gasoline, benzene
  • ethylene vinyl acetate EVA ethylene vinyl acetate EVA
  • the amount of carbon black in the electrically conductive layer 6 is in the embodiment between 20 and 25 wt.%.
  • the layer thicknesses of the layers 6 and 8 are 0.5 mm in each case.
  • the outer, electrically insulating permeable layer 8 is also surrounded by a non-illustrated in the figure permeable elastic protective braid, with which it is protected from mechanical damage.
  • the support tube 2 may also be provided on its inner surface with a coating which consists of a material which has only a low absorption capacity for the substance L, to a resulting at a large distance between the leakage location and the detection sensor by absorption in the support tube 2 signal attenuation largely to reduce.
  • This coating for example of Teflon PTFE, is applied to the inner surface before the radial openings are introduced into the support tube.
  • Fig. 2 is a single-layer structure with only one electrically conductive and permeable for the substance L layer 6 is provided so that layer 8 and layer 6 form a functional unit.
  • the electrically conductive layer 6 is a longitudinally extending band-shaped partial area of the permeable layer 8.
  • electrically conductive layer 6 and permeable layer 8 are arranged side by side on the support tube 2.
  • the layer 6 is permeable to the fabric.
  • the manifold 1 is suitable for installation in electrically insulating environment.
  • a band-shaped electrically conductive layer 6 is provided, which in embedded in the permeable layer 8 and electrically isolated therefrom by the environment to enable use in an electrically conductive environment.
  • a return conductor 9 is embedded in the layer 8, whose electrical resistance is not influenced by the substance L. This return conductor 9 is electrically connected at one end of the bus 1 with the layer 6 and allows the measurement of their resistance.
  • the return conductor 9 may be an embedded wire. Alternatively, it may also be formed by a band-shaped electrically conductive layer.
  • the manifold 1 is laid along a pipeline 10 between a pump 12 and a sensor 14 for the substance to be detected.
  • the electrical resistance of the electrically conductive layer 6 along a distance s is permanent, ie measured even when the pump 12 is not activated, ie when a located in the support tube 2 fluid support medium M rests.
  • a separate return conductor 18 is laid along the manifold 1 for this purpose.
  • a control signal 20 is generated in the control and evaluation device 16, with which the pump 12 in Operation is taken and a leakage location can be performed according to the known methods explained above.
  • a separate return conductor 18 or a return conductor 9 (shown in FIG. Fig. 4 ) is not required by, for example, a ground contact at the endpoint the distance, as shown in dashed lines in the figure is made.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

The collection pipe (1), to gather leakages and identify leak locations, has a carrier pipe (2) fitted with openings (4) with a layer covering (8) around the outer surface. The covering layer is permeable to the leakage material being monitored. The structure also includes an electrically conductive layer (6) penetrated at least partially by the leaking material, which alters its electrical resistance. The conductive layer is a polymer with a soot filling.

Description

Die Erfindung betrifft eine Sammelleitung zur Leckageüberwachung und Leckageortung an einer Anlage. Außerdem betrifft die Erfindung eine Einrichtung und ein Verfahren zur Leckageüberwachung und Leckageortung an einer Anlage, bei der eine solche Sammelleitung zum Einsatz kommt.The invention relates to a manifold for leakage monitoring and leak detection on a system. Moreover, the invention relates to a device and a method for leakage monitoring and leak detection on a system in which such a manifold is used.

Aus der EP 0 175 219 B1 ist eine Sammelleitung bekannt, die aus einem Trägerrohr besteht, das an seiner Außenoberfläche mit einer permeablen Schicht versehen ist, durch die ein aus einer Leckage in der Anlage, beispielsweise eine Pipeline, in die Umgebung der Sammelleitung austretender und zu detektierender Stoff diffundieren kann. Das Trägerrohr ist für diesen Stoff undurchlässig und ist mit Öffnungen versehen, so dass der Stoff in das Innere der Sammelleitung gelangen kann. Mit einem aus der DE 24 31 907 C3 bekannten Verfahren wird dann der Ort ermittelt, an dem der Stoff in die Sammelleitung eingedrungen ist. Dieser Ort entspricht der Stelle, an der der-Stoff aus dem überwachten Anlagenteil ausgetreten ist. Hierzu wird mit einer an die Sammelleitung angeschlossenen Pumpe der in die Sammelleitung eingedrungene Stoff gemeinsam mit einem in der Sammelleitung befindlichen Trägergas einem ebenfalls an die Sammelleitung angeschlossenen Sensor zugeleitet. Bei bekannter Strömungsgeschwindigkeit kann aus der Zeitspanne zwischen dem Einschalten der Pumpe und dem Eintreffen des Stoffes am Sensor der Ort, an dem der Stoff in die Sammelleitung eindringt und damit der Leckageort am Anlagenteil ermittelt werden.From the EP 0 175 219 B1 a manifold is known, which consists of a support tube, which is provided on its outer surface with a permeable layer through which a leaking from a leakage in the plant, such as a pipeline, in the vicinity of the manifold and substance to diffuse can diffuse. The support tube is impermeable to this substance and is provided with openings so that the substance can reach the interior of the manifold. With one from the DE 24 31 907 C3 known method is then determined the location at which the substance has penetrated into the manifold. This location corresponds to the point at which the substance has leaked out of the monitored part of the plant. For this purpose, the material which has penetrated into the collecting line together with a carrier gas located in the collecting line is fed to a sensor likewise connected to the collecting line with a pump connected to the collecting line. At a known flow rate can from the time between switching on the pump and the arrival of the substance at the sensor, the place where the substance penetrates into the manifold and thus the leak location are determined at the plant part.

Um mit dieser bekannten Leckageüberwachungs- und Leckageortungseinrichtung auch kleine Leckagen erfassen zu können, sind relativ lange Sammelzeiten erforderlich, die bis zu 24h betragen können. Nur dann ist in die Sammelleitung genügend von dem nachzuweisenden Stoff eingedrungen, um ihn auch in Anbetracht der unvermeidbaren Längsdiffusion und innerhalb der Sammelleitung stattfindenden Absorption über eine längere Strecke in einer zum Nachweis erforderlichen Konzentration zum Sensor transportieren können. Insbesondere bei langen Sammelleitungen, wie sie entlang von Pipelines verlegt sind, wird das Trägergas deshalb nur in größeren Zeitabständen oder Abfrage-Intervallen, beispielsweise alle 6 bis 24 h, durch die Sammelleitung transportiert, so dass zwischen dem Auftreten einer Leckage und deren Entdeckung im ungünstigsten Fall eine Zeitspanne verstreichen kann, die sich aus dem Zeitabstand zwischen zwei aufeinanderfolgenden Messungen und der Zeit, die der eingedrungene Stoff vom Beginn des Pumpvorganges bis zum Eintreffen am Sensor benötigt, zusammensetzt. Eine Zeitspanne in der Größenordnung von vielen Stunden kann aber insbesondere bei größeren Leckagen mit erheblichen irreversiblen Schäden sowohl an der Anlage als auch für die Umwelt verbunden sein.To be able to detect even small leaks with this known Leckageüberwachungs- and leakage location, are relatively long collection times required, which can be up to 24 hours. Only then enough of the substance to be detected has penetrated into the manifold so that it can be transported to the sensor over a longer distance in a concentration required for detection, also in view of the unavoidable longitudinal diffusion and absorption taking place within the collecting line. Especially with long manifolds, as they are laid along pipelines, the carrier gas is therefore only at longer intervals or interrogation intervals, for example every 6 to 24 h, transported through the manifold, so that between the occurrence of a leak and its discovery in the most unfavorable Case can be a period of time, which is composed of the time interval between two consecutive measurements and the time required for the penetrated substance from the beginning of the pumping process to the arrival at the sensor. However, a period of time of the order of many hours may be associated with considerable irreversible damage both to the system and to the environment, especially in the case of larger leaks.

Um die Ansprechgeschwindigkeit zu erhöhen, d. h. die Zeitspanne (Ansprechzeit) zwischen dem Auftreten einer Leckage und deren Nachweis oder Ortung zu verkürzen, ist es grundsätzlich möglich, alternativ oder ergänzend zu der bekannten Sammelleitung eine Einrichtung zur Leckageüberwachung einzusetzen, die systembedingt eine permanente Überwachung mit dadurch deutlich verringerter Ansprechzeit ermöglicht, wie sie beispielsweise in der WO 02/082036 A1 vorgeschlagen ist. Dort wird neben der Sammelleitung eine Lichtleitfaser verlegt, deren Übertragungseigenschaften vom Stoff beeinflusst werden, und die an eine optische Sende- und Empfangseinrichtung zur Messung der Laufzeit zurückgestreuten Lichtes optisch gekoppelt ist. Mit einer solchen Einrichtung können zwar größere Leckagen frühzeitig detektiert werden, jedoch ist aber damit ein erhöhter apparativer Aufwand verbunden. Darüber hinaus können die bekannten schnell ansprechenden Einrichtungen zur Leckageüberwachung nur zum Erkennen größerer Leckagen eingesetzt werden, da die mit der bekannten Sammelleitung erreichten Nachweisempfindlichkeiten mit solchen Einrichtungen nicht erzielt werden können. Somit ist es notwendig, zwei komplette Systeme vor Ort zu installieren. Dies ist mit einem erheblichen Kostenaufwand verknüpft.In order to increase the response speed, ie to shorten the time span (response time) between the occurrence of a leak and its detection or localization, it is fundamentally possible to use a device for leakage monitoring as an alternative or in addition to the known manifold, which systemically involves permanent monitoring significantly reduced response time, as for example in the WO 02/082036 A1 is proposed. There, an optical fiber is laid next to the bus, whose transmission properties are influenced by the substance, and which is optically coupled to an optical transmitting and receiving device for measuring the propagation time of the light back. With such a device, although larger leaks early be detected, but this is associated with increased equipment costs. In addition, the known fast-responding leak detection devices can only be used to detect larger leaks since the detection sensitivities achieved with the known bus can not be achieved with such devices. Thus, it is necessary to install two complete systems on site. This is associated with a significant cost.

Der Erfindung liegt nun die Aufgabe zu Grunde, eine Sammelleitung zur Leckageüberwachung und Leckageortung anzugeben, mit der ohne zusätzliche Installationsaufwand die Zeitspanne zwischen Auftreten einer Leckage und deren Nachweis oder Ortung verringert werden kann. Außerdem liegt der Erfindung die Aufgabe zu Grunde, eine Einrichtung zur Leckageüberwachung und Leckageortung mit einer solchen Sammelleitung abzugeben. Der Erfindung liegt auch die Aufgabe zu Grunde, ein Verfahren zur Leckageüberwachung und Leckageortung anzugeben, mit dem unter Verwendung einer solchen Sammelleitung die Zeitspanne zwischen Leckageortung und Auftreten der Leckage verringert ist.The invention is based on the object to provide a manifold for leakage monitoring and leakage location, with the time without any additional installation effort between the occurrence of leakage and its detection or location can be reduced. In addition, the invention is based on the object to provide a device for leakage monitoring and leak detection with such a manifold. The invention is also based on the object to provide a method for leakage monitoring and leak detection, with the use of such a manifold, the time between leakage location and occurrence of the leakage is reduced.

Die erstgenannte Aufgabe wird gemäß der Erfindung gelöst mit einer Sammelleitung mit den Merkmalen des Patentanspruches 1. Gemäß diesen Merkmalen enthält die Sammelleitung eine mit Öffnungen versehenes Trägerrohr, das an seiner Innen- oder Außenoberfläche von einer Schicht überdeckt ist, die zumindest auf einem sich in Längsrichtung des Trägerrohrs erstreckenden Teilbereich für einen zu überwachenden Stoff durchlässig ist, und das eine sich in seine Längsrichtung erstreckende elektrisch leitfähige Schicht aufweist, in die der Stoff zumindest eindringen kann und deren ohmscher Widerstand von dem in sie eindringenden Stoff abhängt. Mit einer solchen Sammelleitung kann das Auftreten eines bei einer Leckage austretenden Stoffes permanent durch eine Messung des Widerstandes der elektrisch leitfähigen, stoffsensitiven Schicht zwischen zwei räumlich weit voneinander entfernten Messstellen überwacht werden. Mit anderen Worten: Es kann eine permanente Leckageüberwachung erfolgen, die unabhängig von den Zeitpunkten ist, in denen eine an die Sammelleitung angeschlossene Pumpe eingeschaltet ist.The first object is achieved according to the invention with a manifold having the features of claim 1. According to these features, the manifold includes an apertured support tube which is covered on its inner or outer surface by a layer at least one longitudinally of the support tube extending portion is permeable to a substance to be monitored, and having an extending in its longitudinal direction electrically conductive layer into which the substance can at least penetrate and whose ohmic resistance depends on the material penetrating into it. With such a manifold For example, the occurrence of a substance emerging in the event of a leakage can be monitored permanently by measuring the resistance of the electrically conductive, material-sensitive layer between two measuring points that are widely spaced from one another. In other words, there may be a permanent leak monitoring that is independent of the times when a pump connected to the manifold is turned on.

In einer vorteilhaften Ausgestaltung der Erfindung besteht die elektrisch leitfähige Schicht aus einem mit Ruß gefüllten polymeren Werkstoff. Dies ermöglicht eine besonders kostengünstige Herstellung der elektrisch leitfähigen stoffsensitiven Schicht, da ein polymerer Werkstoff einerseits problemlos auf das Trägerrohr in einem Extrusionsverfahren aufgebracht werden kann und durch die Auffüllung mit Ruß auf eine besonders einfache Weise dessen elektrische Leitfähigkeit herbeigeführt werden kann, und da andererseits die elektrische Leitfähigkeit eines mit Ruß gefüllten Kunststoffes empfindlich von einer beim Eindringen des Stoffes stattfindenden Quellung und damit einhergehenden Zerstörung der Rußbrücken abhängt.In an advantageous embodiment of the invention, the electrically conductive layer consists of a filled with carbon black polymer material. This allows a particularly cost-effective production of the electrically conductive material-sensitive layer, as a polymeric material can be easily applied on the one hand on the support tube in an extrusion process and the filling with carbon black in a particularly simple manner its electrical conductivity can be brought about, and on the other hand, the electrical Conductivity of a plastic filled with soot sensitive depending on a swelling occurring during penetration of the substance and concomitant destruction of the carbon black bridges.

Als polymerer Grundwerkstoff ist insbesondere Ethylenvinylacetat EVA geeignet, das sowohl für eine Vielzahl von Stoffen permeabel ist, als auch durch Beimengung von Ruß, vorzugsweise zwischen 20 und 25 Gew.%, eine ausreichend gute elektrische Leitfähigkeit (geringen spezifischen ohmschen Widerstand) aufweist. Dabei hat sich überraschenderweise ergeben, dass die Beimengung von Ruß die Permeabilität allenfalls in einem vertretbaren Ausmaß verringert.In particular, ethylene vinyl acetate EVA is suitable as the polymeric base material, which is permeable to a large number of substances as well as having sufficiently good electrical conductivity (low specific ohmic resistance) by admixing carbon black, preferably between 20 and 25% by weight. It has surprisingly been found that the addition of carbon black reduces the permeability at most to a reasonable extent.

Wenn die elektrisch leitfähige Schicht permeabel ist, kann diese die Innen- oder Außenoberfläche des Trägerrohres vollständig überdecken. In dieser Ausgestaltung kann die elektrisch leitfähige Schicht auch benutzt werden, um die Sammelleitung auf mechanische Zerstörung, beispielsweise auf Bruch zu überwachen.If the electrically conductive layer is permeable, it may completely cover the inner or outer surface of the support tube cover. In this embodiment, the electrically conductive layer can also be used to monitor the bus for mechanical destruction, such as breakage.

Wenn die elektrisch leitfähige Schicht von einer elektrisch isolierenden permeablen Schicht, die für den Stoff durchlässig ist, umgeben ist, kann bei ausreichender Dichtigkeit der Sammelleitung eine durch die Rußbeimengung verursachte Verringerung der Permeationsgeschwindigkeit reduziert werden, da die elektrisch leitfähige permeable Schicht nur noch eine Dicke aufweisen muss, die auf das zur Überwachung des elektrischen Widerstandes bzw. der elektrischen Leitfähigkeit erforderliche Ausmaß begrenzt ist. Außerdem wird die elektrisch leitfähige permeable Schicht elektrisch von der Umgebung isoliert, so dass die Sammelleitung auch im Erdreich oder in Kontakt mit elektrisch leitfähigen Anlagenteilen verlegt werden kann.If the electrically conductive layer is surrounded by an electrically insulating permeable layer that is permeable to the substance, with sufficient tightness of the manifold, a reduction in the permeation rate caused by the carbon black addition can be reduced since the electrically conductive permeable layer has only one thickness which is limited to the extent necessary for monitoring the electrical resistance or the electrical conductivity. In addition, the electrically conductive permeable layer is electrically isolated from the environment, so that the manifold can be laid in the ground or in contact with electrically conductive parts of the plant.

Bezüglich der Einrichtung und des Verfahrens wird die Aufgabe gemäß der Erfindung jeweils gelöst mit einer Einrichtung bzw. einem Verfahren mit den Merkmalen der Unteransprüche 8 bzw. 9.With regard to the device and the method, the object according to the invention is in each case achieved with a device or a method having the features of the subclaims 8 and 9, respectively.

Durch eine Messung des elektrischen Widerstandes der elektrisch leitfähigen Schicht ist mit geringem apparativen und messtechnischen Aufwand eine permanente Leckägeüberwachung möglich.By measuring the electrical resistance of the electrically conductive layer, a permanent leakage monitoring is possible with low equipment and metrological effort.

Bei dem Verfahren nach Patentanspruch 9 wird die Zeitspanne zwischen dem Auftreten einer Leckage und der Leckageortung dadurch verringert, dass eine Widerstandserhöhung als Auslöse- oder Triggersignal für die Durchführung einer Messung zur Leckageortung verwendet wird, bei der ein fluides Trägermedium durch die Sammelleitung gepumpt und mit einem Sensor für einen bei der Leckage austretenden Stoff analysiert wird. Eine Leckageortung erfolgt somit nicht mehr ausschließlich in fest vorgegebenen Zeitabständen sondern zusätzlich oder nur dann, wenn durch die Widerstandsmessung das Auftreten einer Leckage detektiert wird.In the method according to claim 9, the time lapse between the occurrence of a leakage and the leakage location is reduced by using a resistance increase as a trigger signal for performing a leak detection measurement, in which a fluid carrier medium is pumped through the manifold and at a Sensor for one at leakage leakage is analyzed. A leakage location is thus no longer exclusively at fixed time intervals but additionally or only if the occurrence of a leakage is detected by the resistance measurement.

Zur weiteren Erläuterung der Erfindung wird auf die Ausführungsbeispiele der Erfindung verwiesen. Es zeigen:

Fig. 1-4
jeweils eine Sammelleitung gemäß der Erfindung in einem schematischen Querschnitt,
Fig. 5
eine Einrichtung gemäß der Erfindung ebenfalls in einer schematischen Prinzipdarstellung.
For further explanation of the invention reference is made to the embodiments of the invention. Show it:
Fig. 1-4
each a manifold according to the invention in a schematic cross section,
Fig. 5
a device according to the invention also in a schematic schematic diagram.

Gemäß Fig. 1 umfasst eine Sammelleitung 1 ein Trägerrohr 2, beispielsweise aus PVC, das mit einer Vielzahl von radialen Öffnungen 4 versehen ist. Auf dem Trägerrohr 2 ist eine elektrisch leitfähige Schicht 6 angeordnet, die das Trägerrohr 2 vollständig überdeckt und für einen nachzuweisenden Stoff L permeabel ist. Die elektrisch leitfähige Schicht 6 ist stoffsensitiv, d.h. ihr (spezifischer) elektrischer Widerstand ist von der Anwesenheit des Stoffes L abhängig.According to Fig. 1 comprises a manifold 1, a support tube 2, for example made of PVC, which is provided with a plurality of radial openings 4. On the support tube 2, an electrically conductive layer 6 is arranged, which completely covers the support tube 2 and is permeable to a substance L to be detected. The electrically conductive layer 6 is substance-sensitive, ie its (specific) electrical resistance is dependent on the presence of the substance L.

Die elektrisch leitfähige Schicht 6 besteht im Ausführungsbeispiel aus einem mit elektrisch leitfähigen Partikeln gefüllten polymeren Werkstoff, bei dem es sich um einen elektrisch isolierenden polymeren Grundwerkstoff handelt, dem zum Herbeiführen einer elektrischen Leitfähigkeit leitfähige Partikel, im Beispiel Rußpartikel, beigemengt sind. Die elektrisch leitfähige Schicht 6 ist umgeben von einer elektrisch nicht leitfähigen, für den Stoff ebenfalls permeablen Schicht 8, die vorzugsweise aus demselben polymeren Grundwerkstoff besteht.In the exemplary embodiment, the electrically conductive layer 6 consists of a polymer material filled with electrically conductive particles, which is an electrically insulating polymeric base material to which conductive particles, in the example carbon black particles, are added to bring about an electrical conductivity. The electrically conductive layer 6 is surrounded by an electrically non-conductive, also permeable to the substance layer 8, which preferably consists of the same polymeric base material.

Die Auswahl eines geeigneten polymeren Grundwerkstoffes für die elektrisch leitfähige Schicht 6 hängt von dem im Falle einer Leckage austretenden und nachzuweisenden Stoff L ab. Geeignet sind prinzipiell alle polymeren Grundwerkstoffe, durch die der nachzuweisende Stoff L einerseits hindurchtreten kann und die durch den in sie eintretenden Stoff eine Strukturänderung, beispielsweise eine Quellung, erfahren, um auf diese Weise Brücken zwischen den elektrisch leitfähigen Partikeln aufzubrechen und die auf diesen Brücken beruhende elektrische Leitfähigkeit des mit den leitfähigen Partikeln versetzten polymeren Werkstoffes zu verschlechtern.The selection of a suitable polymeric base material for the electrically conductive layer 6 depends on the substance L emerging and to be detected in the event of a leakage. In principle, all polymeric base materials are suitable, through which the substance L to be detected can pass on the one hand and undergo a structural change, for example swelling, due to the material entering it in order thus to break bridges between the electrically conductive particles and those based on these bridges to deteriorate electrical conductivity of the mixed with the conductive particles polymeric material.

Der in der Praxis erforderliche Rußanteil hängt einerseits ab vom polymeren Grundwerkstoff und andererseits ab von der Länge der Sammelleitung, um mit geringem messtechnischen Aufwand erfassbare elektrische Widerstandswerte beispielsweise im Bereich von einigen MΩ zu erzielen.The amount of carbon black required in practice depends on the one hand on the polymeric base material and on the other hand on the length of the manifold, in order to achieve detectable electrical resistance values, for example in the range of a few MΩ, with low metrological outlay.

Für den Nachweis von Kohlenwasserstoffverbindungen (insbesondere Öle, Benzin, Benzol) hat sich als polymerer Grundwerkstoff Ethylenvinylacetat EVA als besonders geeignet herausgestellt. Der Rußanteil in der elektrisch leitfähigen Schicht 6 beträgt im Ausführungsbeispiel zwischen 20 und 25 Gew.%.For the detection of hydrocarbon compounds (especially oils, gasoline, benzene) has turned out to be particularly suitable as a polymeric base material ethylene vinyl acetate EVA. The amount of carbon black in the electrically conductive layer 6 is in the embodiment between 20 and 25 wt.%.

Im Ausführungsbeispiel betragen die Schichtdicken der Schichten 6 bzw. 8 jeweils 0,5 mm.In the exemplary embodiment, the layer thicknesses of the layers 6 and 8 are 0.5 mm in each case.

Die äußere, elektrisch isolierende permeable Schicht 8 ist außerdem von einem in der Figur nicht dargestellten durchlässigen elastischen Schutzgeflecht umgeben, mit dem sie vor mechanischer Zerstörung geschützt ist.The outer, electrically insulating permeable layer 8 is also surrounded by a non-illustrated in the figure permeable elastic protective braid, with which it is protected from mechanical damage.

Das Trägerrohr 2 kann außerdem an seiner Innenoberfläche mit einer Beschichtung versehen sein, die aus einem Werkstoff besteht, der nur ein geringes Absorptionsvermögen für den Stoff L, um eine bei großem Abstand zwischen dem Leckageort und dem Nachweissensor durch Absorption im Trägerrohr 2 entstehende Signaldämpfung weitgehend zu reduzieren. Diese Beschichtung, beispielsweise aus Teflon PTFE, wird auf die Innenoberfläche aufgebracht, bevor die radialen Öffnungen in das Trägerrohr eingebracht werden.The support tube 2 may also be provided on its inner surface with a coating which consists of a material which has only a low absorption capacity for the substance L, to a resulting at a large distance between the leakage location and the detection sensor by absorption in the support tube 2 signal attenuation largely to reduce. This coating, for example of Teflon PTFE, is applied to the inner surface before the radial openings are introduced into the support tube.

Gemäß Fig. 2 ist ein einschichtiger Aufbau mit nur einer elektrisch leitfähigen und für den Stoff L permeablen Schicht 6 vorgesehen, so dass Schicht 8 und Schicht 6 eine funktionelle Einheit bilden.According to Fig. 2 is a single-layer structure with only one electrically conductive and permeable for the substance L layer 6 is provided so that layer 8 and layer 6 form a functional unit.

Grundsätzlich ist es auch nicht zwingend notwendig, dass die elektrisch leitfähige Schicht 6 bei Anwesenheit einer das Trägerrohr 2 vollständig umschließenden elektrisch isolierenden permeablen Schicht 8 dieses vollständig überdeckt Im Ausführungsbeispiel gemäß Fig. 3 ist die elektrisch leitfähige Schicht 6 ein sich in Längsrichtung erstreckendes, bandförmiges Teilgebiet der permeablen Schicht 8. Mit anderen Worten: Elektrisch leitfähige Schicht 6 und permeable Schicht 8 sind nebeneinander auf dem Trägerrohr 2 angeordnet. In diesem Ausführungsbeispiel ist es auch nicht zwingend erforderlich, dass die Schicht 6 für den Stoff permeabel ist.In principle, it is also not absolutely necessary for the electrically conductive layer 6 to be completely covered in the presence of an electrically insulating permeable layer 8 completely enclosing the support tube 2 Fig. 3 For example, the electrically conductive layer 6 is a longitudinally extending band-shaped partial area of the permeable layer 8. In other words, electrically conductive layer 6 and permeable layer 8 are arranged side by side on the support tube 2. In this embodiment, it is also not mandatory that the layer 6 is permeable to the fabric.

In den in Fig. 2 und 3 dargestellten Ausführungsformen eignet sich die Sammelleitung 1 zum Verlegen in elektrisch isolierender Umgebung.In the in FIGS. 2 and 3 illustrated embodiments, the manifold 1 is suitable for installation in electrically insulating environment.

Bei dem in Fig. 4 dargestellten Ausführungsbeispiel ist eine bandförmige elektrisch leitfähige Schicht 6 vorgesehen, die in der permeablen Schicht 8 eingelagert ist und durch diese von der Umgebung elektrisch isoliert ist, um eine Verwendung in elektrisch leitfähiger Umgebung zu ermöglichen. Außerdem ist in die Schicht 8 ein Rückleiter 9 eingelagert, dessen elektrischer Widerstand nicht durch den Stoff L beeinflusst ist. Dieser Rückleiter 9 ist an einem Ende der Sammelleitung 1 mit der Schicht 6 elektrisch verbunden und ermöglicht die Messung ihres Widerstandes. Bei dem Rückleiter 9 kann es sich, wie in der Fig. dargestellt, um einen eingelagerten Draht handeln. Alternativ hierzu kann er auch durch eine bandförmige elektrisch leitfähige Schicht gebildet sein.At the in Fig. 4 illustrated embodiment, a band-shaped electrically conductive layer 6 is provided, which in embedded in the permeable layer 8 and electrically isolated therefrom by the environment to enable use in an electrically conductive environment. In addition, a return conductor 9 is embedded in the layer 8, whose electrical resistance is not influenced by the substance L. This return conductor 9 is electrically connected at one end of the bus 1 with the layer 6 and allows the measurement of their resistance. As shown in the figure, the return conductor 9 may be an embedded wire. Alternatively, it may also be formed by a band-shaped electrically conductive layer.

Gemäß Fig. 5 ist die Sammelleitung 1 entlang einer Pipeline 10 zwischen einer Pumpe 12 und einem Sensor 14 für den nachzuweisenden Stoff verlegt. In einer Auswerte- und Steuereinrichtung 16 wird der elektrische Widerstand der elektrisch leitfähigen Schicht 6 entlang einer Strecke s permanent, d. h. auch dann gemessen, wenn die Pumpe 12 nicht aktiviert ist, d.h. wenn ein sich im Trägerrohr 2 befindliches fluides Trägermedium M ruht. Im Beispiel ist hierzu ein separater Rückleiter 18 entlang der Sammelleitung 1 verlegt. Übersteigt der Widerstand der elektrisch leitfähigen Schicht 6 infolge eines bei einer Leckage in die Umgebung der Sammelleitung 2 austretenden Stoffes L (gestrichelt veranschaulicht) einen vorgegebenen Grenzwert, so wird in der Steuer- und Auswerteeinrichtung 16 ein Steuersignal 20 generiert, mit dem die Pumpe 12 in Betrieb genommen wird und eine Leckageortung nach den eingangs erläuterten bekannten Verfahren durchgeführt werden kann.According to Fig. 5 For example, the manifold 1 is laid along a pipeline 10 between a pump 12 and a sensor 14 for the substance to be detected. In an evaluation and control device 16, the electrical resistance of the electrically conductive layer 6 along a distance s is permanent, ie measured even when the pump 12 is not activated, ie when a located in the support tube 2 fluid support medium M rests. In the example, a separate return conductor 18 is laid along the manifold 1 for this purpose. If the resistance of the electrically conductive layer 6 exceeds a predetermined limit value as a result of leakage L in the environment of the manifold 2 (illustrated by dashed lines), a control signal 20 is generated in the control and evaluation device 16, with which the pump 12 in Operation is taken and a leakage location can be performed according to the known methods explained above.

Abhängig vom Verlegeort der Sammelleitung kann es auch möglich sein, dass ein separater Rückleiter 18 oder ein in die Sammelleitung 1 integrierter Rückleiter 9 (Fig. 4) nicht erforderlich ist, indem beispielsweise ein Massekontakt am Endpunkt der Strecke, wie dies in der Figur gestrichelt veranschaulicht ist, hergestellt ist.Depending on the location of the collecting line, it may also be possible for a separate return conductor 18 or a return conductor 9 (shown in FIG. Fig. 4 ) is not required by, for example, a ground contact at the endpoint the distance, as shown in dashed lines in the figure is made.

Claims (9)

  1. Collecting conduit (1) for leakage monitoring and leakage locating on an installation, comprising a support pipe (2) which is provided with radial openings (4), is covered at its outer surface by a layer (8) permeable to a substance (L) to be monitored, at least on a segment extending in the longitudinal direction of the support pipe (2), and has an electrically conductive layer (6) which extends in its longitudinal direction and into which the substance (L) can at least penetrate and whose ohmic resistance depends on the substance penetrating into it.
  2. Collecting conduit (1) according to claim 1, in which the electrically conductive layer (6) is made of a polymer material filled with carbon black.
  3. Collecting conduit (1) according to claim 2, in which the polymer material provided is EVA filled with carbon black.
  4. Collecting conduit (1) according to claim 3, in which the concentration of the carbon black is between 20 and 25 percent by weight.
  5. Collecting conduit (1) according to one of the preceding claims, in which the electrically conductive layer (6) is arranged on the outer surface of the support pipe (2).
  6. Collecting conduit (1) according to claim 5, in which the electrically conductive layer (6) is surrounded by an electrically insulating layer (8) which covers the support pipe (2) and is permeable to the substance.
  7. Collecting conduit (1) according to one of the preceding claims, in which the electrically conductive layer (6) completely covers the outer surface of the support pipe (2) and is permeable to the substance (L).
  8. Apparatus for leakage monitoring and leakage locating at an installation, comprising a collecting conduit (1) according to one of the preceding claims and comprising a device (16) for detecting the electrical resistance of the electrically conductive layer (6).
  9. Method for leakage monitoring and locating, in which the electrical resistance of the electrically conductive layer (6) of a collecting conduit (1) laid along a section according to one of claims 1 to 7 is detected and an increase in resistance is used as tripping means for carrying out a measurement for leakage locating, during which a fluid carrier medium (M) is pumped through the collecting conduit and is analyzed by a sensor (14) for a substance (L) escaping during the leakage.
EP06706652A 2005-02-22 2006-02-04 Collector line for leakage monitoring and leakage location Expired - Lifetime EP1784602B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005007988A DE102005007988A1 (en) 2005-02-22 2005-02-22 Collection pipe for leakages, e.g. of hydrocarbon compounds, has a perforated carrier pipe with an electrically conductive layer and an outer covering layer
PCT/EP2006/000994 WO2006089629A1 (en) 2005-02-22 2006-02-04 Collector line for leakage monitoring and leakage location

Publications (2)

Publication Number Publication Date
EP1784602A1 EP1784602A1 (en) 2007-05-16
EP1784602B1 true EP1784602B1 (en) 2008-10-29

Family

ID=36087630

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06706652A Expired - Lifetime EP1784602B1 (en) 2005-02-22 2006-02-04 Collector line for leakage monitoring and leakage location

Country Status (7)

Country Link
US (1) US7802465B2 (en)
EP (1) EP1784602B1 (en)
AT (1) ATE412850T1 (en)
CA (1) CA2570274C (en)
DE (2) DE102005007988A1 (en)
RU (1) RU2333419C1 (en)
WO (1) WO2006089629A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9823184B1 (en) 2016-05-13 2017-11-21 General Electric Company Distributed gas detection system and method

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8032095B1 (en) 2005-03-03 2011-10-04 Marvell International Ltd. Method and apparatus for detecting carrier leakage in a wireless or similar system
US7770435B2 (en) 2006-09-01 2010-08-10 Areva Np Gmbh Pipeline having a collector line and method for leakage monitoring and leakage location
US7461541B2 (en) * 2006-09-27 2008-12-09 C.G.R.S., Inc Leak detection method for a primary containment system
US8104327B1 (en) * 2006-09-27 2012-01-31 C.G.R.S. Inc. Leak detection method for a primary containment system
DE102007005693B4 (en) 2007-02-06 2009-12-24 Areva Np Gmbh Method for producing a collecting line for detecting and locating a substance emerging in the vicinity of the collecting line in the event of a leak
DE102007060392A1 (en) 2007-12-14 2009-06-18 Krones Ag Rotary distributor with leakage detection
DE202010005100U1 (en) 2010-04-15 2010-07-15 Lincoln Gmbh Lubrication system and vehicle with a lubrication system
RU2599403C1 (en) * 2015-06-04 2016-10-10 Акционерное Общество "Атомэнергопроект" Device for detecting leakage in pipelines
CA3007129C (en) * 2015-12-04 2024-02-27 Instrumar Limited Apparatus and method of detecting breaches in pipelines
US20170350561A1 (en) * 2016-06-02 2017-12-07 C-Fer Technologies (1999) Inc. Leak detection backbone and flow barriers
CN106876811B (en) * 2017-04-12 2024-02-09 华霆（合肥）动力技术有限公司 Leakage detecting device and battery module leakage detecting system
RU188229U1 (en) * 2017-12-28 2019-04-03 Общество с ограниченной ответственностью "ЭнергоТэк" ELECTRIC CONDUCTING POLYMER PIPE CHANNEL CABLE FOR LAYING ELECTRICAL CABLE
GB2587985B (en) 2018-05-01 2023-03-15 Baker Hughes Holdings Llc Gas sensor system
US11199466B2 (en) * 2018-08-31 2021-12-14 Taiwan Semiconductor Manufacturing Company, Ltd. System and method for liquid leak detection
KR102170028B1 (en) * 2018-11-27 2020-10-26 한국원자력연구원 Sensor tube of humidity sensor and humidity sensor assembly using the same
CN112411678B (en) * 2020-11-04 2022-06-24 湖南力乐利环保科技有限公司 Sensing module for detecting leakage of tap water pipeline
CN112524496A (en) * 2020-11-23 2021-03-19 中国计量大学 Experimental device for improve system alarm precision is revealed to optic fibre temperature detection water pipe

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE579184C (en) * 1931-04-08 1933-06-22 Berthold Jenewein Dr Ing Moisture indicator for insulation
DE1084092B (en) * 1958-12-08 1960-06-23 Pleiger Maschf Paul Device for reporting leaks in pipelines laid in the ground, which contain harmful fluids, e.g. B. raw oil, lead
US3485085A (en) * 1968-04-23 1969-12-23 William M Hawkins Jr Leak detector
DE2431907C3 (en) 1974-07-03 1978-03-09 Wolfgang Dipl.-Phys. Dr.- Ing. 7500 Karlsruhe Issel Method and device for determining concentration profiles of liquid or gaseous substances along a route
DE2453215A1 (en) * 1974-11-09 1976-05-13 Issel Wolfgang Digital electrical system for signalling and location of leaks - consists of measuring cable with strips of conductive material which can absorb the leaked fluid
DE2725224A1 (en) * 1977-06-03 1978-12-14 Herbert Friedrich Ernst I Baum Leak monitor for long pipeline - has enclosing condenser strip with capacity altered by fault to initiate alarm
SU806987A1 (en) 1979-05-29 1981-02-23 Всесоюзный Научно-Исследовательскийи Проектно-Конструкторский Институтпо Трубопроводным Контейнерным Сис-Temam "Вниипитранспрогресс" Apparatus for locating leak in pipeline
DE8011887U1 (en) * 1980-04-30 1980-07-31 Kraftwerk Union Ag, 4330 Muelheim LEAK DETECTING DEVICE FOR PIPELINES AND PIPELINE CONNECTIONS
EP0175219B1 (en) * 1984-09-19 1988-05-11 Wolfgang Dr.-Ing. Issel Hollow line for determining the concentration profiles of liquid or gaseous substances
AT388430B (en) * 1987-05-06 1989-06-26 Scheuermann Herbert Dipl Ing DEVICE FOR DETECTING AND LOCATING LEAKS IN A PIPING LINE CARRYING A DAMP MEDIUM
SU1642190A1 (en) * 1988-11-10 1991-04-15 Вильнюсское Производственное Управление Газификации Method of identification of gas leak in underground gas lines
EP0591294B1 (en) * 1991-06-26 1995-03-08 Dipl.-Ing. Wrede & Niedecken Verwaltung GmbH Gas and/or liquid tubular duct
EP0533960B1 (en) * 1991-07-29 1994-10-12 Brandes, Bernd Device and procedure for detecting leaks in double walled pipelines for fluids
US5203202A (en) * 1992-02-25 1993-04-20 W. L. Gore & Associates, Inc. Apparatus for detecting leaks in circuits
DE4242806A1 (en) 1992-12-17 1994-06-23 Siemens Ag Sensor hose
DE4334550A1 (en) * 1993-10-11 1995-04-13 Bayer Ag Arrangement for detecting leaks in above-ground pipes
JPH07280690A (en) * 1994-04-13 1995-10-27 Mitsubishi Cable Ind Ltd Leakage detection system for low molecular weight organic liquids
ATE209779T1 (en) * 1996-03-26 2001-12-15 Framatome Anp Gmbh DEVICE AND METHOD FOR LEAK DETECTION
DE19643637A1 (en) * 1996-10-22 1998-04-23 Siemens Ag Leak detection device and method
US6967183B2 (en) * 1998-08-27 2005-11-22 Cabot Corporation Electrocatalyst powders, methods for producing powders and devices fabricated from same
DE10060853C1 (en) * 2000-12-06 2002-08-14 Framatome Anp Gmbh Sensor tube for determining a concentration profile
DE10116496A1 (en) * 2001-04-03 2002-10-17 Framatome Anp Gmbh Device and method for the detection and location of a substance escaping into the environment
US6865941B2 (en) * 2001-11-21 2005-03-15 Before-The-Event, Ltd. Liquid leak detector
RU2246706C2 (en) 2002-07-16 2005-02-20 Алтайский государственный университет Transducer for measuring static pressure in grainy layer
CA2416171A1 (en) 2003-01-13 2004-07-13 Pure Technologies Ltd. Pipeline monitoring system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9823184B1 (en) 2016-05-13 2017-11-21 General Electric Company Distributed gas detection system and method

Also Published As

Publication number Publication date
EP1784602A1 (en) 2007-05-16
CA2570274C (en) 2013-07-23
DE502006001934D1 (en) 2008-12-11
DE102005007988A1 (en) 2006-08-24
ATE412850T1 (en) 2008-11-15
US7802465B2 (en) 2010-09-28
US20070119238A1 (en) 2007-05-31
RU2006141248A (en) 2008-05-27
CA2570274A1 (en) 2006-08-31
WO2006089629A1 (en) 2006-08-31
RU2333419C1 (en) 2008-09-10

Similar Documents

Publication Publication Date Title
EP1784602B1 (en) Collector line for leakage monitoring and leakage location
DE2431907C3 (en) Method and device for determining concentration profiles of liquid or gaseous substances along a route
DE10336679B4 (en) Device for detecting leaks in fluid-carrying components
EP0890088B1 (en) Means and method for leakage detection
EP2596326B1 (en) Component for conducting or receiving a fluid, and method for testing the component
DE102008033947A1 (en) Method and device for leak testing structural waterproofing
EP0525593B1 (en) Sensing hose for monitoring a medium
WO2007006747A1 (en) Method for locating leaks in pipes
DE3620976C2 (en) Chemically resistant, liquid-tight covering for collecting rooms, containers or the like made of concrete
DE202018106981U1 (en) Arrangement comprising a pipeline and a device for monitoring thereof
DE3930530A1 (en) Leakage monitoring system for thermally-insulated pipeline - uses longitudinal monitoring wires embedded in insulation with monitoring of complex electrical resistance
EP2805042B1 (en) Device for detecting abrasive wear
DE4124640C2 (en) Piping system
DE3503391A1 (en) Method for the structural inspection and operation inspection of remote-heating lines, and a device
DE10036362C2 (en) Method and system for the detection and location of leaks in seals, in particular building seals
EP0511343B1 (en) Device for monitoring the fluidtightness of pipes and structures of thermoplastic material in the open and in the ground
EP0925490B1 (en) Device for detecting and locating leakage fluids in sealing systems
DE3232211C2 (en) Medium transport line
DE2453215A1 (en) Digital electrical system for signalling and location of leaks - consists of measuring cable with strips of conductive material which can absorb the leaked fluid
DE10103412B4 (en) Method for detecting leaks in at least one closed hollow body
EP0082172A1 (en) Method and device for continuously monitoring an installation containing a fluid
DE3336335C2 (en) Device for monitoring a container
DE3904577C2 (en) Fault locating device on jacketed pipes
EP4187238B1 (en) Arrangement and method for measuring moisture in buildings
DE19643637A1 (en) Leak detection device and method

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20070322

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20070727

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: AREVA NP GMBH

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 502006001934

Country of ref document: DE

Date of ref document: 20081211

Kind code of ref document: P

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20081029

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090209

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081029

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081029

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090330

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081029

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081029

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081029

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090228

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081029

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081029

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081029

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081029

BERE Be: lapsed

Owner name: AREVA NP G.M.B.H.

Effective date: 20090228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090129

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081029

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081029

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090228

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081029

26N No opposition filed

Effective date: 20090730

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20091030

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090302

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090204

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100228

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090130

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081029

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081029

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502006001934

Country of ref document: DE

Representative=s name: MOERTEL, ALFRED, DIPL.-PHYS. DR.RER.NAT., DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502006001934

Country of ref document: DE

Representative=s name: MEISSNER BOLTE & PARTNER GBR, DE

Effective date: 20131112

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006001934

Country of ref document: DE

Owner name: AREVA GMBH, DE

Free format text: FORMER OWNER: AREVA NP GMBH, 91052 ERLANGEN, DE

Effective date: 20131112

Ref country code: DE

Ref legal event code: R082

Ref document number: 502006001934

Country of ref document: DE

Representative=s name: MOERTEL, ALFRED, DIPL.-PHYS. DR.RER.NAT., DE

Effective date: 20131112

Ref country code: DE

Ref legal event code: R082

Ref document number: 502006001934

Country of ref document: DE

Representative=s name: MEISSNER BOLTE PATENTANWAELTE RECHTSANWAELTE P, DE

Effective date: 20131112

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502006001934

Country of ref document: DE

Representative=s name: MEISSNER BOLTE & PARTNER GBR, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 502006001934

Country of ref document: DE

Representative=s name: MEISSNER BOLTE PATENTANWAELTE RECHTSANWAELTE P, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502006001934

Country of ref document: DE

Representative=s name: MEISSNER BOLTE PATENTANWAELTE RECHTSANWAELTE P, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502006001934

Country of ref document: DE

Representative=s name: MEISSNER BOLTE PATENTANWAELTE RECHTSANWAELTE P, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006001934

Country of ref document: DE

Owner name: FRAMATOME GMBH, DE

Free format text: FORMER OWNER: AREVA GMBH, 91052 ERLANGEN, DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: HC

Owner name: AREVA GMBH; DE

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), CHANGE OF OWNER(S) NAME; FORMER OWNER NAME: AREVA NP GMBH

Effective date: 20190111

Ref country code: NL

Ref legal event code: PD

Owner name: FRAMATOME GMBH; DE

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), ASSIGNMENT; FORMER OWNER NAME: AREVA GMBH

Effective date: 20190111

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20190219

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20190219

Year of fee payment: 14

Ref country code: GB

Payment date: 20190221

Year of fee payment: 14

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20191212 AND 20191218

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502006001934

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502006001934

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20200301

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20200204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200901

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200204