DE4238738A1 - Detecting leaks in non metallic, partially filled tubes - involves applying a.c. current and detecting induced voltage with inductive transducer to detect leakage of electrically conductive fluids - Google Patents
Detecting leaks in non metallic, partially filled tubes - involves applying a.c. current and detecting induced voltage with inductive transducer to detect leakage of electrically conductive fluidsInfo
- Publication number
- DE4238738A1 DE4238738A1 DE19924238738 DE4238738A DE4238738A1 DE 4238738 A1 DE4238738 A1 DE 4238738A1 DE 19924238738 DE19924238738 DE 19924238738 DE 4238738 A DE4238738 A DE 4238738A DE 4238738 A1 DE4238738 A1 DE 4238738A1
- Authority
- DE
- Germany
- Prior art keywords
- pipe
- liquid
- current
- leaks
- electrically conductive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000001939 inductive effect Effects 0.000 title claims abstract 5
- 239000012530 fluid Substances 0.000 title 1
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000002351 wastewater Substances 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims abstract description 3
- 239000003792 electrolyte Substances 0.000 claims abstract 4
- 238000001514 detection method Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 230000001965 increasing effect Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 241000881711 Acipenser sturio Species 0.000 claims 1
- 239000000523 sample Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract 1
- 239000003673 groundwater Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000010755 BS 2869 Class G Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000010291 electrical method Methods 0.000 description 1
- 230000005288 electromagnetic effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/40—Investigating fluid-tightness of structures by using electric means, e.g. by observing electric discharges
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
Description
Die Überlegungen zur Erstellung von Meßapparaturen zum Zwecke der Ortung (Detektierung) von Undichtigkeiten in Abwasserkanälen oder Systemen sinnverwandter Funktion beruhen hier auf der direkten oder indirekten Beobachtung der Änderung eines eingespeisten elektrischen Stromes als Folge des Vorhandenseins von Leckstellen. Hierbei wird vorausgesetzt, daß die Füll- Flüssigkeiten elektrisch leitend sind und daß die Rohrleitungsmaterialien keine metallische Leitfähigkeit aufweisen.The considerations for the creation of measuring equipment for the purpose of Locating (detecting) leaks in sewers or Systems of related function are based here on the direct or indirect observation of the change in a fed electrical current as a result of the presence of leaks. It is assumed that the filling liquids are electrically conductive are and that the piping materials have no metallic conductivity exhibit.
Stets ist der eine Pol einer Spannungsquelle im Kontakt mit der Flüssigkeit, während der andere Pol an eine Fernerde geführt wird, die entweder an der Erdoberfläche oder in einem Kanalschacht innerhalb der Flüssigkeit installiert ist. Der zur Erkennung der Leckagen erforderliche Stromfluß kann derart über die Flüssigkeit die Leckstellen direkt passieren und über den quasi unendlichen Erdhalbraum den Gegenpol erreichen.One pole of a voltage source is always in contact with the Liquid, while the other pole is led to a remote end, the either on the surface of the earth or in a manhole inside the Liquid is installed. The one required to detect the leaks In this way, current can flow directly through the liquid through the leaks and reach the opposite pole via the quasi-infinite hemisphere.
Die Leckagen bedeuten für Abwasser-Rohrleitungen oberhalb des Grundwasserspiegels ein Absickern (Exfiltration) von Teilen des Abwassers und damit eine Kontaminationsgefahr für das Grundwasser, für Rohrleitungen innerhalb des Grundwassers ein Eindringen von Grundwasser in die Rohre (Infiltration) und damit oft eine unverträgliche Überlastung des Systems und auch der Kläranlagen.The leaks mean for sewage pipes above the Groundwater level a seepage (exfiltration) of parts of the Waste water and thus a risk of contamination for the groundwater, for pipelines within the groundwater an ingress of Groundwater in the pipes (infiltration) and thus often an incompatible Overloading the system and also the sewage treatment plants.
Der Stand der Technik zur Detektierung und Interpretation von Schad stellen in Rohrleitungen ist - soweit bekannt - nur außerhalb des hier vorgeschlagenen Teilbereiches der praktischen Physik definiert. Ver öffentlichungen über Detektierungen mit rein elektrischen Methoden sind nicht bekannt mit Ausnahme der Anmeldung Deutsches Patentamt, Offenlegungsschrift DE 40 10 622 A1 vom 10. 10. 1991, Klasse G 01 M 3140 (Anmelder RUDOLF RAMMNER).The state of the art for the detection and interpretation of harm As far as is known, placing in pipelines is only outside of here proposed sub-area of practical physics. Ver publications on detections using purely electrical methods are not known with the exception of the German Patent Office application, Publication DE 40 10 622 A1 of 10.10.1991, class G 01 M 3140 (applicant RUDOLF RAMMNER).
Detektierungen werden derzeitig diskutiert und teilweise auch ausgeführt mit Hilfe von Überdruck oder Unterdruck von in abgeschottete Rohrabschnitte eingepumpter Luft und mit Hilfe von Schallbeobachtungen von durch die Leckstellen mit Geräusch hindurchtretender Luft; durch chemische Messungen mit Gassensoren über den Rohren an der Erdoberfläche, nachdem in die Rohre Leitgase eingeführt wurden oder ohnehin detektierbare im Rohr vorhanden sind, die durch die Leckstellen austreten und derart an der Erdoberfläche zur Lokalisierung der Schäden dienen können; sodann werden Detektierungen großmaßstäblich mit fernsteuerbaren Fernseh-Kameras vorgenommen, jedoch in der Regel nur in wasserfreien Rohrabschnitten und nach deren Spülung sowie Außerbetriebsetzung.Detections are currently being discussed and some are being carried out with the help of overpressure or underpressure from foreclosed Pipe sections of pumped air and with the help of sound observations air passing through the leak with noise; by chemical measurements with gas sensors above the tubes at the Earth surface after leading gases have been introduced into the pipes or anyway detectable are present in the pipe due to the leaks emerge and so on the earth's surface to localize the damage can serve; then detections are scaled up with remotely controllable television cameras made, however, usually only in anhydrous pipe sections and after rinsing them as well Decommissioning.
Alle diese Verfahren haben Grenzen und oft beträchtliche Schwierigkeiten bei der Anwendung, so daß weitere Verfahren, die ebenso bei gewissen speziellen Bedingungen Schwierigkeiten der Anwendung aufweisen können, zur Ergänzung zweckdienlich sind. Die hier genannten Verfahren und Vorrichtungen haben auch Grenzen ihrer Anwendbarkeit, teilweise auch in Abhängigkeit der Bedingungen vor Ort. Sie können jedoch ohne die Notwendigkeit einer beiderseitigen dichten Verschließung des Rohrabschnittes und damit ohne eine Gefahr für das Personal wie bei einer Verwendung hoher Drucke in Einsatz genommen werden, abgesehen davon, daß hohe Drucke durchaus auch öfters Läsionen am Rohrkörper verursachen, die sonst erst nach Jahren oder überhaupt nicht auftreten würden. Sowohl Exfiltrationen als auch Infiltrationen lassen sich untersuchen.All of these methods have limitations and often considerable difficulties in use, so that further procedures that are also the same with certain difficult to use under special conditions can be useful as a supplement. The ones mentioned here Methods and devices also have limits on their applicability, partly also depending on the conditions on site. You can however without the need for a tight seal on both sides of the pipe section and thus without any danger to the personnel as in using high pressures, apart from the fact that high pressures often cause lesions on Cause pipe bodies that would otherwise take years or not at all would occur. Both exfiltration and infiltration can be done examine.
Mit den Verfahren, für die hier Schutzansprüche beantragt werden, wird ein nicht, ein partiell oder ein vollständig mit Flüssigkeit gefülltes Rohr kontinuierlich in Längsrichtung auf Leckstellen abgesucht, indem die Meßanordnung im Rohr entlanggezogen wird und hierbei die elektrischen Daten in Abhängigkeit des axialen Vorschubes und möglichst auch der Höhe über der Sohl-Linie registriert werden.With the procedures for which protection claims are requested here a not, a partially or completely filled pipe continuously searched for leaks in the longitudinal direction by the Measuring arrangement is pulled along in the tube and the electrical Data depending on the axial feed and if possible also the Height above the Sohl line.
Ein Fließen von elektrischen Strömen wird teilweise erst durch die Existenz von Leckstellen in den Rohrwandungen ermöglicht, teilweise werden ohnehin vorhandene Ströme quer durch die nicht unendlich gut isolierenden Rohrwandungsmaterialien (wie z. B. beim Beton) durch das Vorhandensein der hier infrage stehenden und zu ortenden Lecks modifiziert und damit für eine Leckortung und eine quantitative Leck beschreibung auswertbar gemacht.A flow of electrical currents is only partially caused by the Leakage in the pipe walls possible, in part anyway existing currents across the not infinitely good insulating pipe wall materials (such as concrete) through the Presence of the leaks in question and to be located modified and thus for a leak location and a quantitative leak description made evaluable.
Beim Gegenstand des ersten Hauptanspruches (Nr. 1) und der zuge hörigen Unteransprüche wird die Ablenkung der aus einem direkt die Flüssigkeit kontaktierenden Geber heraustretenden elektrischen Stromlinien mit Hilfe von elektromagnetisch beeinflußten Sensoren gemessen.In the subject of the first main claim (No. 1) and the Subordinate claims will be the distraction from one directly Electrical contacts coming out of liquid contacting sensors Streamlines with the help of electromagnetically influenced Sensors measured.
Die Ausbreitung von elektrischen Strömen aus der mehr oder weniger punktförmigen Quelle heraus in einen regulären geometrisch definierbaren räumlichen Körpers ist in der einschlägigen Literatur der theoretischen Elektrotechnik abgehandelt. Die elektromagnetische Fernwirkung für die Berechnung der induzierten Spannung in einer Spule aus der Mannigfaltigkeit aller vorhandenen elektrischen Stromlinien ergibt sich durch Integration der Lineamente nach dem BlOT-SAVARTschen (LAPLACEschen) Gesetz, so daß sich auch hierfür Literaturangaben erübrigen.The spread of electrical currents from the more or less point source into a regular geometrically definable spatial body is theoretical in the relevant literature Electrical engineering dealt with. The remote electromagnetic effect for the Calculation of the induced voltage in a coil from the Diversity of all existing electrical current lines results by integrating the linear elements according to the BlOT-SAVART law (LAPLACE law), so that literature references are also available for this spare.
Bei den weiteren beiden Hauptansprüchen samt zugehörigen Unteran sprüchen (Nr. 8 ff) wird zugelassen, daß die Rohrleitungen nicht gefüllt sind. Die Zuführung von Wasser über einen Schlauch ist eine approbierte Technik, wie sie selbst bei kleineren Rohrquerschnitten zu Reinigungs zwecken angewendet wird. Bei diesem der Leckage-Erfassung dienenden Vorgehen wird die kontaktierende Flüssigkeit mit einem Schlauch successive in Nähe vermuteter Leckstellen gebracht und hierbei das Augenmerk auf die Effekte einer Stromstärkeerhöhung gerichtet.For the other two main claims including the associated subordinate say (No. 8 ff) that the pipes are not filled are. The supply of water via a hose is an approved one Technology that can be used for cleaning even with smaller pipe cross-sections is used for purposes. This is used for leak detection The contacting liquid will proceed with a hose brought successively in the vicinity of suspected leaks and this Focus on the effects of increasing the current.
Claims (14)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19924238738 DE4238738A1 (en) | 1992-11-17 | 1992-11-17 | Detecting leaks in non metallic, partially filled tubes - involves applying a.c. current and detecting induced voltage with inductive transducer to detect leakage of electrically conductive fluids |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19924238738 DE4238738A1 (en) | 1992-11-17 | 1992-11-17 | Detecting leaks in non metallic, partially filled tubes - involves applying a.c. current and detecting induced voltage with inductive transducer to detect leakage of electrically conductive fluids |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4238738A1 true DE4238738A1 (en) | 1994-05-19 |
Family
ID=6473073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19924238738 Withdrawn DE4238738A1 (en) | 1992-11-17 | 1992-11-17 | Detecting leaks in non metallic, partially filled tubes - involves applying a.c. current and detecting induced voltage with inductive transducer to detect leakage of electrically conductive fluids |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE4238738A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4426872A1 (en) * | 1994-07-29 | 1996-02-08 | Seba Mess Ortungstech | Determining place and size of leakages in sewage and drainage lines and similar systems |
DE19955672A1 (en) * | 1999-08-31 | 2001-03-08 | Reinhard Steier | Locating leakages involves sensing pulses from measurement device to pipeline via electric cable, measurement head contact via leakage to earth connection to produce measurement potential |
ES2358822A1 (en) * | 2009-07-14 | 2011-05-16 | Fugated I+D, S.L. | Water leak detector. (Machine-translation by Google Translate, not legally binding) |
EP2748576A4 (en) * | 2012-02-16 | 2015-06-03 | Electro Scan Inc | System and method for collection, analysis and archiving of pipe defect data |
EP2746744A4 (en) * | 2011-09-30 | 2015-07-29 | Omron Tateisi Electronics Co | Detecting apparatus, detecting method, program, and recording medium |
-
1992
- 1992-11-17 DE DE19924238738 patent/DE4238738A1/en not_active Withdrawn
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4426872A1 (en) * | 1994-07-29 | 1996-02-08 | Seba Mess Ortungstech | Determining place and size of leakages in sewage and drainage lines and similar systems |
DE4426872C2 (en) * | 1994-07-29 | 1998-04-30 | Seba Mess Ortungstech | Method and device for determining the location and extent of leaks in sewers and the like |
DE19955672A1 (en) * | 1999-08-31 | 2001-03-08 | Reinhard Steier | Locating leakages involves sensing pulses from measurement device to pipeline via electric cable, measurement head contact via leakage to earth connection to produce measurement potential |
ES2358822A1 (en) * | 2009-07-14 | 2011-05-16 | Fugated I+D, S.L. | Water leak detector. (Machine-translation by Google Translate, not legally binding) |
EP2746744A4 (en) * | 2011-09-30 | 2015-07-29 | Omron Tateisi Electronics Co | Detecting apparatus, detecting method, program, and recording medium |
EP2748576A4 (en) * | 2012-02-16 | 2015-06-03 | Electro Scan Inc | System and method for collection, analysis and archiving of pipe defect data |
EP3462157A1 (en) * | 2012-02-16 | 2019-04-03 | Electro Scan, Inc. | System and method for collection, analysis and archiving of pipe defect data |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3977233A (en) | Process and apparatus for the determination of concentration profiles of liquid or gaseous substances | |
EP0533960B1 (en) | Device and procedure for detecting leaks in double walled pipelines for fluids | |
DE102005036508B4 (en) | Method and device for monitoring and detecting coating defects of a buried or water-laid pipeline | |
EP1075658B1 (en) | Method and device for detecting irregularities in the thickness of the walls of inaccessible metal pipes | |
DE102012017415A1 (en) | Method for monitoring efficacy of cathodic corrosion protection of system i.e. pipeline made from steel, involves determining changes of protection current directly or indirectly by measuring changes of pH-values of soil enclosing probe | |
DE4010622C2 (en) | Leakage detection and interpretation methods | |
EP2962091A1 (en) | Arrangement for determining the phase distribution in multiphase media having at least one highly conductive phase | |
EP1052492A1 (en) | Arrangement and system for detecting leaks | |
DE4238738A1 (en) | Detecting leaks in non metallic, partially filled tubes - involves applying a.c. current and detecting induced voltage with inductive transducer to detect leakage of electrically conductive fluids | |
CN108980636A (en) | Reserve underground leakage method of real-time | |
DE4219434A1 (en) | Detecting and interpreting leaks in non-metallic pipes with electrically conductive liquids, e.g. waste water, - evaluating variations in potential field in liquid as movable electrode approaches leakage point. | |
EP1391737A2 (en) | Apparatus for simultaneous feeding of electrical signals and measuring of potentials in probes | |
DE19612800A1 (en) | Leak location in empty non-metallic non-electrically conducting drain pipelines | |
CN109142429B (en) | Detection system and detection method for temperature rise characteristic of vertical grounding electrode | |
CN1375055A (en) | Method and measuring head for carrying out measurements in water supply systems | |
JP2004198385A (en) | Method of surveying oil contamination in soil | |
EP1387156B1 (en) | Method and device for determining the existences of leaks in blocking walls | |
DE4223752A1 (en) | Device for determining the impermeability condition of an insulation substructure in landfills | |
DE19610475C1 (en) | Device for locating leaks in pipes and in pipe connections esp. sewage, drain and waste water pipes | |
DE19638734A1 (en) | Device for the selective detection and location of leakage liquids on sealing systems | |
DE102010021992B4 (en) | A method of detecting damage to the enclosure of objects buried in soil and / or water and protected by cathodic corrosion protection | |
Wrasse et al. | Capacitive direct-imaging sensor for two-phase flow visualization | |
WO1983000226A1 (en) | Method and device for continuously monitoring an installation containing a fluid | |
RU2593419C1 (en) | Method for investigation of flat roof from soft insulating materials for accurate detection of defects of roof membrane (versions) | |
DE102004055167B3 (en) | Underground liquid gas tank insulation status test procedure measures rest potential to buried electrodes and currents to earthed auxiliary anode from tank and test plate |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8122 | Nonbinding interest in granting licenses declared | ||
8127 | New person/name/address of the applicant |
Owner name: RAMMNER, BERNHARD, 54292 TRIER, DE RAMMNER, BURKHA |
|
8127 | New person/name/address of the applicant |
Owner name: RAMMNER, BURKHARD, 21762 OTTERNDORF, DE |
|
8181 | Inventor (new situation) |
Free format text: RAMMNER, BERNHARD, 54292 TRIER, DE |
|
8141 | Disposal/no request for examination |