EP2372222B1 - Dispositif de guidage de liquides s'écoulant pendant le fonctionnement d'installations de biogaz, de stations d'épuration ou d'installations agricoles - Google Patents

Dispositif de guidage de liquides s'écoulant pendant le fonctionnement d'installations de biogaz, de stations d'épuration ou d'installations agricoles Download PDF

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Publication number
EP2372222B1
EP2372222B1 EP20100003350 EP10003350A EP2372222B1 EP 2372222 B1 EP2372222 B1 EP 2372222B1 EP 20100003350 EP20100003350 EP 20100003350 EP 10003350 A EP10003350 A EP 10003350A EP 2372222 B1 EP2372222 B1 EP 2372222B1
Authority
EP
European Patent Office
Prior art keywords
tube
fluid
protective hose
facilities
storage tank
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.)
Not-in-force
Application number
EP20100003350
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German (de)
English (en)
Other versions
EP2372222A1 (fr
Inventor
Christoph Martens
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.)
MT Energie GmbH
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MT Energie 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 MT Energie GmbH filed Critical MT Energie GmbH
Priority to EP20100003350 priority Critical patent/EP2372222B1/fr
Publication of EP2372222A1 publication Critical patent/EP2372222A1/fr
Application granted granted Critical
Publication of EP2372222B1 publication Critical patent/EP2372222B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/02—Pipe-line systems for gases or vapours
    • F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
    • 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 device for guiding occurring in the operation of biogas plants, sewage treatment plants or agricultural plants fluids.
  • underground pipelines that carry water polluting fluids leakage of the fluid into the surrounding soil and groundwater should be avoided if the piping leaks.
  • the transport of such water-polluting substances may be required, for example, in the operation of biogas plants. But even in sewage treatment plants or other agricultural facilities, the transport of such fluids may be required.
  • DE 1 475 842 A1 or DE 100 28 737 A1 has been proposed for other applications, to arrange for the pipeline two rigid tubes of different diameters, wherein the inner tube carries a fluid.
  • a space extending in the longitudinal direction of the tubes is then formed for discharging fluid emerging from the inner tube during a leakage.
  • pressure surges or changes in length caused for example by pulsating positive displacement or temperature changes, however, it comes to strong movements of the pressurized pipes within the ducts, especially in loosely laid pipe systems see eg EP-170293031 , Therefore, the inner conveyor tube and the outer jacket tube must be firmly connected to each other, for example by welding or bracing.
  • the tightness of the gap between the tubes must be ensured at all times even with relative movements of the tubes to each other. This is associated with a high design effort in the production and installation of pipelines. This in turn leads to significant costs.
  • a hose-in-hose assembly with two flexible hoses is known to agitate media between a watercraft and to ask for a mooring.
  • a flexible arrangement is not suitable for other applications, in particular for burial in the ground.
  • pipelines with multilayer pipe walls which consist at least partially of conductive material. By monitoring the conductivity, a leak can be detected.
  • this solution is structurally complex and costly.
  • the present invention seeks to provide a device of the type mentioned, with the structurally simple and cost-effective manner, the leakage of fluid in a leakage of a fluid-carrying tube is prevented.
  • the invention solves the problem by a device for guiding occurring during operation of biogas plants, sewage treatment plants or agricultural plants fluids comprising a rigid tube and at least one dense for the fluid, the tube at least over part of its length surrounding flexible protective tube, at least over a portion of the length of the tube forms a catchment space for fluid leaking out of the tube.
  • the pipe can be laid, for example, in the ground.
  • the fluid carried in the tube can be a liquid, in particular a water-polluting liquid that is not allowed to enter the groundwater.
  • This may be, for example, in the context of the operation of a biogas plant to be conveyed liquids such as sewage, liquid manure, viassiggärsubstrat, etc. It may also be in the context of operation act on a sewage treatment plant or other agricultural plant to be promoted liquids.
  • the fluids may be incurred in the context of operation of the respective system as an input product, as a starting product or as a waste product.
  • a rigid tube is provided, which is at least partially surrounded by a flexible protective tube.
  • the tube has a larger cross section than the tube in the unstretched state. Between the outer surface of the tube and the inner surface of the protective tube, a collecting space for leaking fluid from the tube is formed.
  • the collecting space is sealed from the environment, so that from the collecting space no fluid can get into the environment in an undesirable manner. Rather, at a leakage of the tube into the gap occurred fluid can be safely removed from this without the risk of contamination of the environment, eg. B. of the surrounding soil surrounding the pipe and thus the groundwater.
  • the protective tube completely surrounds the tube over at least part of its length, in particular substantially over its entire length.
  • the protective tube has a e.g. submerged part of the pipeline over its entire length, in order to prevent leakage of fluid in case of leakage into the ground completely.
  • several protective tubes to be arranged one behind the other, which form a plurality of shelters around the pipe.
  • the protective tube is flexible and can for example consist of an elastic plastic material. Due to its flexibility, it can safely compensate movements of the rigid pipeline, eg due to pressure surges or temperature changes, and without the risk of damaging the gap that is leak-tight for the fluid that has escaped. At the same time a high through the rigid tube Stability of the device ensured in particular when laying in the ground.
  • the rigid tube is fixed in the ground, for example.
  • the flexible hose attaches to the rigid tube so that it is fixed together with the rigid tube. A hose break or the like is safely avoided. Elaborate design measures, as in the prior art with two rigid pipes arranged one inside the other, are not required.
  • a contamination of the area surrounding the pipe in a pipe leakage is avoided in a structurally simple manner.
  • the manufacture and installation of the device is simple and fast and thus also inexpensive.
  • the fixing of the pipeline in the ground can be done in a conventional manner.
  • the line can be firmly enclosed by the soil, whereby the protective tube is pressed against the tube and fixed together with the line.
  • the protective tube can z. B. of natural or synthetic rubber or plastic.
  • the hose can be made pressure-resistant for the pressure prevailing in the pipeline via a fabric insert. However, this is not mandatory as it is normally not exposed to this pressure even in the event of a leak.
  • one or more spacers for example a drainage tube extending in the longitudinal direction of the tube, may be provided to ensure that the collection space is maintained, particularly in the case of a buried tube.
  • the protective tube can be connected to at least one of its ends, for example also with both ends, tightly with the outer surface of the tube. It is also possible that the protective tube with at least one of its ends, for example also with both ends, tightly connected to a flange or neck of the pipe.
  • the protective tube can be glued to at least one of its ends on the outer surface of the tube or the flange or neck of the tube.
  • the collecting space formed between the outer surface of the tube and the inside of the protective tube can be communicatively connected to a collecting container, such that fluid leaked from the tube in the event of leakage can flow out of the collecting space into the collecting container.
  • a discharge of the leaked in a leak fluid is made possible in a particularly simple manner.
  • a branch to the collecting container may be arranged, for example, at the lowest position of the pipeline. But it is also possible that the leaked fluid is pressed into the collecting container due to the pressure prevailing in the pipe, which at least partially prevails over the leakage in the collecting space formed by the protective tube around the pipe.
  • the collecting container may also be arranged at least partially above the pipeline and optionally above the ground.
  • the protective tube can furthermore be fastened with at least one of its ends to an opening of the collecting container.
  • the collecting space communicates with the interior of the collecting container so that leaked fluid escaping from the pipe can pass into the collecting container via the collecting space.
  • the opening may for example be provided with a flange or a nozzle to which the protective tube is attached. It is also possible that rigid tube into the collection container or through the collection container passes.
  • a protective hose can then be fastened with one of its ends in each case.
  • the protective tubes may for example be attached to the outer surface of the tube or to a nozzle or flange of the tube.
  • the attachment of the protective tube to the opening of the collecting container can in turn be realized for example by an adhesive bond, a welded connection, in particular plastic welding connection, or a crimp connection.
  • the protective tube may in particular be fastened to a wall bounding the opening of the collecting container.
  • the collecting space or enveloping space formed by the protective tube around the pipeline can be provided without further installations.
  • the hose lays close to the pipe when laid in the ground, but forms due to its larger cross-section in the longitudinal direction of the pipe wall extending wrinkles.
  • laterally penetrating fluid can then be removed in the longitudinal direction of the envelope space and collected, for example, in the collecting container.
  • an outflow fluid drainage tube can be arranged in the collecting space formed between the outer surface of the tube and the inside of the protective tube.
  • a drain pipe opening into the collecting tank may be arranged in the collecting space, via which fluid which has escaped from the pipe during a leakage can flow into the collecting tank.
  • a substantially dimensionally stable drainage pipe or a drainage aid is laid in the longitudinal direction of the pipeline in the collecting space. This can be advantageous, especially in the case of viscous media, for flowing out into a collecting container and thus for the timely detection of leaks.
  • the collecting container may be provided with a sight glass or one or more inspection openings. As a result, it can be visually checked in a particularly simple manner whether there is fluid in the collecting container, ie the tube has a leak. It can also be provided at least one sensor for detecting fluid leaked from the pipe in a leak. Such a sensor can be arranged, for example, in the collecting container.
  • the sensors may be optical sensors. However, other sensors are conceivable, e.g. Sensors that measure the pH value or sensors that measure the conductivity by means of a resistance measurement and then deduce leaked fluid. Such sensors are known per se. With such a sensor, early and automatic leak detection is possible without the need for an on-site visual inspection by an operator. The leakage can be detected very quickly.
  • the protective tube can be made of film webs, in particular plastic film webs, or fabric tarpaulins. Such a production is cost-effective and flexible, with the protective tube reliably fulfilling the requirements imposed on tightness and flexibility.
  • the invention also relates to a biogas plant, sewage treatment plant or agricultural plant, comprising at least one device according to the invention.
  • the pipe can be laid in such a system at least partially in the ground.
  • the tube is connected to the interior of a container, in particular a collecting container or fermentation container or storage container, the system.
  • the protective tube is fluid-tight on a wall of the container delimiting an opening for the tube is attached. The attachment can again be done by gluing, welding or crimping.
  • a device according to the invention is shown according to a first embodiment in a sectional view.
  • the device has a substantially rigid tube 10.
  • the tube 10 is in the example shown part of a biogas plant (not shown) and serves to convey water polluting Liquids, eg waste water, liquid manure or liquid fermentation substrate. It is partly laid in the ground 11. Over its entire length 11 laid in the ground and a small over the soil 11 projecting area, the tube 10 is surrounded over its entire circumference by a dense for the water-endangering liquid, in cross section larger flexible protective tube 12.
  • the protective tube can z. B. of a natural or synthetic rubber or a flexible plastic.
  • the protective tube 12 may for example be made of film webs or fabric tarpaulins. At its outside of the soil 11 arranged ends 13, 16 of the protective tube 12 is sealed to the outer surface of the tube 10, in the illustrated example via a circumferential adhesive, welding or crimping. In this way, between the outer wall of the tube 10 and the inner surface of the protective tube 12, a tight envelope space 14 for the medium is formed. This is in the FIGS. 4 and 5 enlarged shown in a perspective sectional view. In this case, the tube 10 is shown only partially with the protective tube 12.
  • a branch line 15 to a collecting container 17 is laterally provided on the protective tube 12 laterally.
  • the collection container 17 is arranged in the illustrated example in the soil 11, but projects beyond the latter at its top.
  • a sensor 18 for detecting liquid in the collecting container 17 is arranged in the illustrated example.
  • the sensor may be, for example, an optical sensor, a pH sensor, a conductivity sensor or another sensor.
  • the collecting container 17 may additionally or alternatively be provided on its upper side with a sight glass or lid (not shown) via which the fluid visually located in the collecting container by an operator can be detected.
  • the rigid tube 10 is laid in the soil in a conventional manner by it is firmly enclosed together with the flexible protective tube 12 from the ground. This effectively prevents vibrations, e.g. caused by pulsating positive displacement pumps, e.g. Eccentric screw or rotary lobe pumps. Due to its larger cross-section of the protective tube 12 forms in the longitudinal direction of the tube 10 extending folds on the pipe wall, so that the enveloping space 14 is initially at least partially reduced in size. If leakage now occurs in the wall of the tube 10, the liquid conveyed in the tube 10, due to the pressure prevailing in the tube 10, passes through the leakage into the enveloping space 14 formed by the protective tube 12.
  • the liquid Due to the pressure, the liquid dries Way in the envelope 14 and flows through the junction 15 into the sump 17. Leakage of the liquid in the surrounding the pipe 10 and the protective tube 12 soil 11 and thus possibly in the groundwater is excluded. The leaked fluid collects in the sump 17 and can be detected by the sensor 18. In this way, early knowledge of the leakage is obtained and further measures can be taken, e.g. a check of the pipeline 10 and / or an interruption of the conveyance of liquid through the pipe 10.
  • the sensor 18 may e.g. be connected to a control device arranged at a location separate from the plant. At such a control device, a plurality of pipelines arranged at different locations can be monitored. The expense associated with monitoring is thereby reduced.
  • a second embodiment of a device according to the invention is shown.
  • This embodiment is largely identical in construction and function to the embodiment according to Fig. 1 , Unlike the example below Fig. 1 the tube 10 follows in the embodiment Fig. 2 however, through the sump 17.
  • the protective tube 12 is fastened in this embodiment only with its one end 13 on the outer surface of the tube 10. With its other end 16 of the protective tube 12 is attached to a through the inlet opening 19 of the collecting container 17 guided in a fluid-tight jacket tube 21, for example, glued, welded or pinched.
  • a collecting space 14 for fluid emerging from the pipe 10 in the event of a leakage is again formed around the section of the pipe 10 laid directly in the ground.
  • This collecting space 14 communicates in this example via the inlet opening 19 directly to the interior of the collecting container 17, so that fluid from the collecting space 14 via the inlet opening 19 in turn reach the collecting container 17 and detected there by the sensor 18 in the manner described above and processed can be.
  • a branch line 15 is in the embodiment according to Fig. 2 not provided accordingly.
  • FIG. 3 Another embodiment of the invention is shown in Fig. 3 shown. Again, this embodiment is largely identical in construction and function to the embodiments of FIGS Figures 1 and 2 , In contrast to the embodiment according to Fig. 2 the collection container 17 at one of the wall 19 having the inlet opening opposite wall has an outlet opening 22.
  • the rigid tube 10 extends in this embodiment also through the reservoir 17 through, through the inlet opening 19 into the sump 17 and through the outlet opening 22 this out again. Since both the inlet opening 19 and the outlet opening 22 are in this embodiment in the ground 11, is with a through the outlet opening 22 fluid-tight guided duct 23, a second flexible protective tube 24 is connected to its one end 25, for example by an adhesive, welding or crimping connection.
  • the second protective tube 24 is identical in its design and function to the first protective tube 10. Again, the portion of the tube 10 coming from the outlet opening 22, laid in the ground 11, is completely surrounded by the second protective tube 24 over its entire area laid in the earth 11. Above the ground 11, the second protective tube 24 is fastened with its second end 26 close to the outer surface of the tube 10, for example by means of a glued, welded or crimped connection. In this way, the protective tube 24 forms around the running in the ground, coming out of the outlet opening 22 of the collecting container 17 section of the tube 10, a second collecting space 27 for emerging from the tube 10 fluid.
  • This second collecting space 27 in turn communicates via the outlet opening 22 directly with the interior of the collecting container 17, so that fluid from the second collecting space 27 via the outlet opening 22 in turn reach the collecting container 17 and detected there by the sensor 18 in the manner described above and processed can be.
  • a branch line 15 is according to also in the embodiment according to Fig. 3 not provided.
  • Fig. 6 another embodiment of the invention is shown.
  • This embodiment is again largely identical in construction and function to the embodiments of the FIGS. 1 to 3 .
  • the tube 10 is connected in this embodiment, however, with the interior 30 of a container 31 of a biogas plant, sewage treatment plant or agricultural plant, otherwise not shown.
  • the container 31 may be a collecting container of an agricultural plant or a fermentation or storage container of a biogas plant or the like.
  • the tube 10 is fluid-tight through an opening 32 in the wall 33 of the container 31 with one end 34 into the interior 30. Again, the tube 10 is at least partially laid in the soil 11.
  • the protective tube 12 surrounds the tube 10 over its entire area laid in the soil 11 and is attached with its end 16, which is led out of the soil 11, for example via an adhesive, welding or crimping on the outer surface of the tube 10 fluid-tight.
  • fermentation substrate can be guided from the outside into the interior space 30 of the container 31, in particular a fermentation or storage container, via the tube 10.
  • Fig. 7 a further embodiment of the invention is shown, which in terms of construction and function largely identical to the embodiment according to Fig. 6 is.
  • the container 31 is partially disposed in a pit within the soil 11 in this embodiment.
  • the tube 10 extends through the soil 11 through the opening 32 of the container wall 33 into the interior 30 of the container.
  • the opening 32 is also disposed within the soil 11.
  • the protective tube 12 is correspondingly fixed in a fluid-tight manner with its end 16 directly on the outside of the opening 32 for the tube 10 bounding container wall 33, for example glued or welded.
  • a fluid-tight collecting space 14 is formed for leakage fluid around the tube 10 around.
  • FIGS. 4 and 5 Embodiments shown are in all embodiments of the FIGS. 1 to 3 as well as 6 and 7 can be used.
  • Fig. 5 embodiment shown is largely identical to the in Fig. 4 shown embodiment.
  • a drain pipe 28 in the longitudinal direction of the tube 10 is arranged.
  • the substantially dimensionally stable drainage pipe 28 is in Fig. 5 also shown only in part.
  • the drain pipe 28 communicates in a manner not shown with the collecting container 17, optionally via the branch 15, and z. B. extend over part of the length of the tube 10.
  • the device according to the invention prevents the leakage of fluid from a pipe 10 in the event of leakage in both production and installation technology, which is structurally simpler and thus less expensive. At the same time, the device according to the invention allows early detection of the leakage.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Processing Of Solid Wastes (AREA)

Claims (15)

  1. Dispositif de guidage de liquides s'écoulant pendant le fonctionnement d'installations de biogaz, de stations d'épuration ou d'installations agricoles, comprenant un tube (10) rigide et au moins un tuyau de protection (12, 24) flexible étanche aux liquides et entourant le tube (10) au moins sur une partie de sa longueur, qui forme, au moins sur une partie de la longueur du tube (10), un espace récepteur (14, 27) pour du liquide sortant du tube (10) en cas de fuite, caractérisé en ce que le tube (10) est posé dans le sol (11) au moins par tronçons et en ce que le tuyau de protection (12, 24) flexible entoure sur toute sa longueur au moins la partie du tube (10) posée dans le sol, ou en ce que, dans la direction longitudinale du tube (10), sur toute la longueur posée dans le sol, plusieurs tuyaux de protection (12, 24) sont disposés les uns derrière les autres et forment plusieurs espaces récepteurs autour du tube (10).
  2. Dispositif selon la revendication 1, caractérisé en ce que le tuyau de protection (12, 24) est, au moins par une de ses extrémités (13, 16, 23, 26), raccordé de façon étanche à la surface extérieure du tube (10) ou à une bride ou une tubulure du tube (10).
  3. Dispositif selon la revendication 2, caractérisé en ce que le tuyau de protection (12, 24) est, au moins par une de ses extrémités (13, 16, 23, 26), collé sur la surface extérieure du tube (10) ou sur la bride ou la tubulure du tube (10).
  4. Dispositif selon la revendication 2, caractérisé en ce que le tuyau de protection (12, 24) est, au moins par une de ses extrémités (13, 16, 23, 26), soudé sur la surface extérieure du tube (10) ou sur la bride ou la tubulure du tube (10), en particulier avec un procédé de soudage de matières plastiques.
  5. Dispositif selon la revendication 2, caractérisé en ce que le tuyau de protection (12, 24) est, au moins par une de ses extrémités (13, 16, 23, 26), fixé de façon étanche par le biais d'un sertissage sur la surface extérieure du tube (10) ou sur la bride ou la tubulure du tube (10).
  6. Dispositif selon une des revendications précédentes, caractérisé en ce que l'espace récepteur (14, 27) est raccordé de façon communicante à un collecteur (17) de telle sorte que, en cas de fuite, le liquide quittant le tube (10) peut s'écouler dans le collecteur (17) à partir de l'espace récepteur (14, 27).
  7. Dispositif selon la revendication 6, caractérisé en ce que le tuyau de protection (12, 24) est, par au moins une de ses extrémités (13, 16, 23, 26), fixé sur une ouverture (19, 22) du collecteur (17).
  8. Dispositif selon une des revendications 6 ou 7, caractérisé en ce que le tube (10) pénètre dans le collecteur (17) ou traverse le collecteur (17).
  9. Dispositif selon la revendication 8, caractérisé en ce que respectivement un tuyau de protection (12, 24) flexible est fixé sur une ouverture d'entrée et/ou de sortie (19, 22) du collecteur (17) destinée au tube (10).
  10. Dispositif selon une des revendications précédentes, caractérisé en ce que, dans l'espace récepteur (14, 27), il est disposé un tube d'évacuation (28) par le biais duquel le liquide quittant le tube (10) en cas de fuite peut s'écouler.
  11. Dispositif selon une des revendications précédentes, caractérisé également par au moins un capteur (18) destiné à la détection de liquide quittant le tube en cas de fuite, en particulier par un capteur (18) disposé dans le collecteur (19).
  12. Dispositif selon une des revendications précédentes, caractérisé en ce que le tuyau de protection (12, 24) est fabriqué en bandes de feuilles, en particulier en bandes de feuilles en matière plastique ou en bâches textiles.
  13. Installation de biogaz, station d'épuration ou installation agricole, comprenant au moins un dispositif selon une des revendications précédentes.
  14. Installation de biogaz, station d'épuration ou installation agricole selon la revendication 13, caractérisée en ce que le tube (10) est raccordé à l'espace intérieur (30) d'une cuve (31), en particulier d'une cuve réceptrice ou d'une cuve de fermentation ou d'une cuve de stockage, de l'installation.
  15. Installation de biogaz, station d'épuration ou installation agricole selon la revendication 14, caractérisée en ce que le tuyau de protection (12, 24) est fixé de façon étanche aux liquides sur une paroi (33) de la cuve (31) délimitant une ouverture (32) destinée au tube (10).
EP20100003350 2010-03-29 2010-03-29 Dispositif de guidage de liquides s'écoulant pendant le fonctionnement d'installations de biogaz, de stations d'épuration ou d'installations agricoles Not-in-force EP2372222B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20100003350 EP2372222B1 (fr) 2010-03-29 2010-03-29 Dispositif de guidage de liquides s'écoulant pendant le fonctionnement d'installations de biogaz, de stations d'épuration ou d'installations agricoles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20100003350 EP2372222B1 (fr) 2010-03-29 2010-03-29 Dispositif de guidage de liquides s'écoulant pendant le fonctionnement d'installations de biogaz, de stations d'épuration ou d'installations agricoles

Publications (2)

Publication Number Publication Date
EP2372222A1 EP2372222A1 (fr) 2011-10-05
EP2372222B1 true EP2372222B1 (fr) 2014-02-26

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EP20100003350 Not-in-force EP2372222B1 (fr) 2010-03-29 2010-03-29 Dispositif de guidage de liquides s'écoulant pendant le fonctionnement d'installations de biogaz, de stations d'épuration ou d'installations agricoles

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Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1475842A1 (de) 1965-11-02 1969-03-13 Siemens Ag Einrichtung zur Leckueberwachung von Rohrleitungen
DE7605626U1 (de) 1976-02-25 1976-06-24 Clouth Gummiwerke Ag, 5000 Koeln Doppelwandiger schlauch
JPS5612530A (en) * 1979-07-12 1981-02-06 Hitachi Ltd Detecting system for sodium leakage
EP0207015A3 (fr) * 1985-06-18 1990-05-02 DITTA PACETTI ANTONIO di Silvano & Andrea Pacetti Collecteur ventilé pour réseau de distribution du gaz pour usage domestique ou autre
DE3717646A1 (de) * 1987-05-26 1988-12-15 Bauknecht Hausgeraete Vorrichtung zum schutz gegen wasserschaeden bei geschirrspuelmaschinen
US5553971A (en) * 1988-12-20 1996-09-10 Intelpro Corporation Double-containment underground piping system
DE10028737A1 (de) 2000-03-29 2001-10-18 Daume Regelarmaturen Gmbh Doppel-oder mehrwandiges Bauteil zur Verwendung in Rohrleitungssystemen
HU2592U (en) * 2003-04-07 2003-09-29 Laszlo Juhasz Conduit system for gaseous in walls
DE202005014799U1 (de) * 2005-09-19 2007-02-08 E.On Ruhrgas Ag Schutzrohr zur Montage an einer Ausblaseleitung
DE102007051722A1 (de) * 2007-10-27 2009-04-30 Ilja Dzampajev Vorrichtung zum Ableiten eines ausgetretenen Fluids

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