EP2815816B1 - Procédé d'optimisation du nettoyage de conduites ou d'installations traversées par du liquide - Google Patents

Procédé d'optimisation du nettoyage de conduites ou d'installations traversées par du liquide Download PDF

Info

Publication number
EP2815816B1
EP2815816B1 EP13003149.5A EP13003149A EP2815816B1 EP 2815816 B1 EP2815816 B1 EP 2815816B1 EP 13003149 A EP13003149 A EP 13003149A EP 2815816 B1 EP2815816 B1 EP 2815816B1
Authority
EP
European Patent Office
Prior art keywords
pressure
pulse
flushing
sequence
phase
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.)
Active
Application number
EP13003149.5A
Other languages
German (de)
English (en)
Other versions
EP2815816A1 (fr
Inventor
Hans-Gerd Dipl.-Ing. Hammann
Norbert Dr. Klein
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.)
Hammann GmbH
Original Assignee
Hammann 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 Hammann GmbH filed Critical Hammann GmbH
Priority to EP13003149.5A priority Critical patent/EP2815816B1/fr
Publication of EP2815816A1 publication Critical patent/EP2815816A1/fr
Application granted granted Critical
Publication of EP2815816B1 publication Critical patent/EP2815816B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B08B9/0326—Using pulsations

Definitions

  • the present invention relates to a method for optimizing the cleaning of liquid-flow lines or systems along a flushing path.
  • Methods and apparatus for flushing and cleaning of pipelines, especially drinking water pipes by pressurizing the pipeline with pressure pulses or mixtures of water and gas bubbles have long been known.
  • German PS 67368 describes a method for removing solid sludge precipitates from pipelines by introducing a stream of non-condensing gases.
  • accelerated cleaning of piping is achieved by pressurizing non-condensing gases such as air or the like. driving through the pipe. In this case, a strong turbulence of the mixture of water and gas bubbles is desired in order to achieve a strong rubbing effect.
  • the cleaning takes place via a pulsating compressed air supply into the rinsing liquid, wherein the pressure surges of the rinsing liquid take place either simultaneously or alternately with the pressure surges of the compressed air.
  • the DE 350 29 69 A1 describes a process for cleaning pipelines by means of simultaneously introduced pulses of a liquid and a gas, which pulses mix into total pulses, which intermittently enforce the pipeline.
  • the pulse of the liquid or the pulse of the gas is decomposed into a plurality of individual pulses, whereby the effect of the cleaning is to be increased.
  • For loosening, loosening and flushing of stuck in the pipeline solids occurs the introduction of water and air in the form of rectangular, successive pulses, with the water and the air mix together and prevail as a total pulses the pipe to its open end ,
  • the impulses of the air consist of several individual impulses of the same distances, the same amplitude and the same length.
  • an abrasive agent is additionally used in which it is passed through a pipe to be cleaned with at least one liquid and one gaseous fluid (cf. EP 06 34 229 A1 ).
  • a similar procedure is also in the US 2005/0137104 A1 described.
  • the inventive method optimizes the cleaning of liquid-flow lines or systems along a flushing path by the pressure differences at the feed and Ausspeisestelle be minimized.
  • the pipes are piping, such as water pipes or spurs Water supply systems.
  • Such lines may for example be part of the water supply network of a domestic installation or the public supply network.
  • the method according to the invention is also applicable to lines and systems of the beverage industry, food industry or pharmaceutical industry as well as sections of waste water pressure lines.
  • the method is also suitable for the purification of complex installations, which have liquid-flow line sections, such as a heat exchanger device, pump or air mixer.
  • the measurement and detection of the pressure curves at the beginning of the flushing section and at the end of the flushing section are preferably carried out via pressure sensors. It can also be distributed along the flushing several pressure sensors. According to the invention, it has now been found that an optimization of the cleaning of lines or systems through which liquid flows can be effected by passing several sequences with pulses into the line or system, wherein a pause phase is introduced between the sequences in the pulse phase.
  • sequence pulse count n ⁇ pulse duration DIM + pulse interval INT .
  • the number of pulses (n) corresponds to the number of pulses in the sequence
  • the pulse duration (DIM) of the duration of a pulse in the sequence and the pulse interval (INT) to the time interval between two pulses and at the end of a sequence to the beginning of the subsequent Next sequence
  • a pause phase (P) is introduced, in which there is the pressure reduction and partial filling in the flushing path.
  • the height of the individual parameters essentially depends on the line geometry and the topography.
  • the method according to the invention makes it possible to carry out the adaptation required for the optimization on the basis of the determined and transmitted measured values quickly and efficiently.
  • the number of pulses (n) > 1.
  • the number of pulses (n) has, for example, a value between 1 and 3, preferably between 2 and 5.
  • the pressure curve can be varied to the end of the purge path and thus optimized.
  • a further adaptation can take place via the volume flow of the rinsing liquid or the gas pressure at the control unit.
  • the volume flow of the rinsing liquid can be controlled via the inflow rate of the water as a function of the throttling of the shut-off valve before the air feed and the pipe network pressure.
  • the length of the individual parameters also depends on the line topography.
  • the length of the pause phase (P) between two sequences in a system with nominal diameters of 50 to 75 m is between 30 seconds and 50 seconds.
  • the pause phase (P) is at least 30 seconds long. In certain piping systems, pause lengths of more than 50 seconds may also be required.
  • the duration (t) of a single sequence is between 35 and 80 seconds, preferably more than 30 seconds.
  • the duration (t) is between 50 and 90 seconds, preferably more than 70 seconds.
  • the pulse duration for maintaining the pressure at the end of the flushing for example, between 1 and 10 seconds.
  • a pulse duration in such a system is between 4 and 8 seconds, more preferably between 2 and 4 seconds.
  • the pulse interval in the pilot plant is preferably between 2 and 18 seconds, more preferably between 10 and 13 seconds.
  • the liquid pressure in the line or plant before the flushing path is preferably set in the pilot plant between 3 and 7 bar, preferably at 6 bar. The exact numerical values in practice may vary depending on the length and type of flushing distance and deviate from these values. It is preferred that the fluid pressure in the line or system is adjusted before the flushing section below the mains rest or operating pressure. The pulse duration and the pulse interval should be kept as low as possible.
  • the exact height of the parameters to be set depends on the line to be cleaned, in particular the line internal diameter, the length of the flushing path, the number of branches and the geometry of the line system.
  • the partial emptying of the previously filled line section described in the run-in phase follows after the rest phase in which the flushing section is filled with liquid or becomes.
  • the partial emptying in the run-in phase is carried out by introducing a gas or a gas mixture in the line section, whereby the water is displaced due to the volume expansion of the gas.
  • By running back of liquid in the sole of the line section remains at the feed in particular a residual amount of liquid.
  • a residual amount of liquid Preferably, about 10 to 35% of the liquid remain in the flushing section. It is essential that the line must not "run dry" to ensure the desired cleaning success, in particular the maintenance of the pressure curve at the end of the flushing path.
  • the liquid-filled line section may be the existing pipe network of a drinking water line. This provides the required hydration. Alternatively, an external introduction of liquid is possible.
  • the device preferably also comprises a device for regulating the volume flow of the liquid to be introduced into the line or system. This may be, for example, a slide or a valve. The control of the volume flow of the water allows faster block formation of water blocks as well as absorption and transmission of energy.
  • the pressures are recorded via the pressure sensors at the entry point and at the end of the flushing section.
  • a relatively high resolution of the pressure peaks is possible.
  • a fast feedback takes place so that the difference between the corresponding pressure peaks is kept as low as possible.
  • the inventive method ensures a high reproducibility of the results.
  • the immediate feedback to reduce the pressure difference in the pressure sensors allows consistently high cleaning performance.
  • the transmission of the data of the individual pressure sensors to the evaluation unit and the subsequent adaptation of the parameters according to the invention takes place automatically.
  • an assignment table is preferably provided with which, for example, the pulse duration, the pulse interval, the fluid pressure in the line or system, the pulse number and the length of the pause phase are detected and adjusted directly on the basis of the determined pressure values.
  • a detection over the entire flushing path by installing appropriate pressure sensors is possible, about Hydrants or other connections.
  • a recording of the pressure curve or the pressure peaks at the beginning and at the end of the flushing path takes place.
  • such a device comprises means for detecting the pump pressure or the pipe network pressure, the gas pressure at the feed point and the volume flow of the inflowing liquid.
  • a plurality of pressure sensors may be arranged along the flushing path in order to detect the pressure profile almost completely.
  • the pressure sensors can either be mounted directly on a standpipe or an additionally installed T-piece. They measure the pressure profile at the feed point for the gas or gas mixture and at the exit point for the air and water blocks.
  • the data is detected at a distance of about 0.1 seconds.
  • the data is then transferred to an evaluation unit.
  • the data transmission can be wired or wireless.
  • the pressure values recorded via the pressure sensors form the basis for the regulation and control unit, which adapts the individual parameters described above so that the pressure difference at the pressure sensor at the end of the flushing path to the pressure sensor at the entry point at the beginning of the flushing path is as low as possible.
  • said line or investment parameters can be stored in a storage unit in the control and control unit.
  • predefined values for the pulse duration, the pulse interval, the fluid pressure in the line or system, the pulse number and the length of the pause phase can be stored as a function of the line geometry and the length of the purging path.
  • the pressure curves in the individual phases, the rest phase, the retraction phase and the pulse phase were measured.
  • the pipe section In the rest phase, the pipe section is completely filled with water, the flow rate is 0.3 or 0.5 m / s. Gas is supplied with 5 bar air pressure in the line. Volume flow and water pressure are constant.
  • the partial flushing of the flushing section takes place by means of pulsed compressed air. The exact length of the retraction phase depends on the length of the rinse lines.
  • Fig. 1A The results of the pilot plant with DN80 are in Fig. 1A shown.
  • the pressure curves are shown on two sensors: at the beginning of the rinse line (thin line) and at the end of the rinse line (thick line), with impulse cleaning not optimized. It can be clearly seen how it comes to a pressure drop to the end of the flushing distance at the last pressure sensor. The pressure peaks almost completely flat at the exit point of the flushing section.
  • a pressure difference of slightly more than 3 bar was determined with water rinsing (without air) and a flow velocity of 3.7 m / s.
  • the pressure at the exit during the break-in period was for a short time more than 80% of the maximum pressure at the entry point during the impulse phase, but not even 20% of the maximum pressure at the entry point was reached.
  • the cleaning process could be optimized. This was accompanied by the lowest possible pressure loss between the pressure sensor at the beginning of the flushing section and the pressure sensor at the end of the flushing section. It turned out that in particular the pause phase between two sequences for the printer stop at the end of the flushing plays an essential role. In the pause phase it comes to pressure reduction in the flushing and to the backflow of water in the pipe for the likewise required partial emptying. The liquid residue collected in the run-in phase in the line is required for the next sequence.
  • Fig. 1B The results of the optimized method are in Fig. 1B shown. It is clearly recognizable how the pressure at the end of the flushing line (thick line) is maintained in comparison to the pressure curve at the beginning of the flushing line (thin line) ( Fig. 1 A) , The difference of the pressure peaks at the end of the flushing path compared to the pressure at the beginning of the flushing path is kept as low as possible.
  • a sequence consists in the example shown of three individual pulses, which can be seen in the diagram as three pulse peaks.
  • the length of a pulse defines the pulse duration (DIM).
  • the distance between the end of a pulse and the beginning of the subsequent pulse in the sequence defines the pulse interval (INT).
  • the pause between two sequences defines the pause phase (P).
  • An additional change in the throttling of the water supply through a shut-off valve can lead to a further improvement of the cleaning performance.
  • the gas pressure is adjusted so that the static pressure of the pipeline network is not exceeded.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)

Claims (7)

  1. Procédé d'optimisation du nettoyage de conduites ou d'installations traversées par un liquide le long d'une section de rinçage, dans lequel, au début de la section de rinçage, au point d'alimentation, la conduite au moins partiellement remplie de liquide est soumise par impulsions à un gaz ou un mélange de gaz, caractérisé par :
    - une phase de repos initiale, dans laquelle la section de rinçage est remplie de liquide,
    - une phase de démarrage, dans laquelle la section de rinçage est partiellement vidée par introduction d'un gaz ou d'un mélange de gaz dans le tronçon de conduite,
    - une phase d'impulsions, dans laquelle la section de rinçage est soumise au gaz ou au mélange de gaz en plusieurs séquences d'au moins deux impulsions, une séquence étant composée comme suit : séquence = nombre d ′ impulsions n × durée d ′ impulsion DIM + intervalle d ′ impulsions INT ,
    Figure imgb0007
     le nombre d'impulsions (n) correspondant au nombre des impulsions dans la séquence, la durée d'impulsion (DIM) à la durée d'une impulsion dans la séquence et l'intervalle d'impulsions (INT) à la distance temporelle entre deux impulsions et une phase de pause (P) étant introduite à la fin d'une séquence jusqu'au début de la séquence suivante, dans laquelle il se produit une diminution de pression et un remplissage partiel dans la section de rinçage.
  2. Procédé selon la revendication 1, caractérisé en ce que la durée (t) d'une séquence est définie comme suit : t = n x (DIM + INT) + P.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la longueur de la phase de pause (P) entre deux séquences est déterminée et réglée en fonction de la topographie de la conduite.
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que les courbes de pression au début et à la fin de la section de rinçage sont déterminées et que la différence des pics de pression est maintenue aussi faible que possible par adaptation d'un ou plusieurs des paramètres suivants : nombre d'impulsions (n), durée d'impulsion (DIM), intervalle d'impulsions (INT), phase de pause (P).
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que le vidage partiel de la conduite ou de l'installation est effectué jusqu'à ce qu'il reste environ 10 % à 35 % de liquide dans la section de rinçage.
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que les valeurs de pression déterminées par les capteurs de pression sont transmises à une unité d'évaluation, de sorte qu'une adaptation des paramètres, sélectionnés dans le groupe composé de : nombre d'impulsions (n), durée d'impulsion (DIM), intervalle d'impulsions (INT), longueur de la phase de pause (P), pression de liquide dans la conduite ou l'installation, peut avoir lieu sur cette base pour maintenir aussi faible que possible la différence des pics de pression, une nouvelle adaptation de ces paramètres ayant lieu par une rétroaction en cas de modification des paramètres de la conduite.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que la pression de liquide dans la conduite ou l'installation avant la section de rinçage est réglée au-dessous de la pression du réseau au repos, respectivement de la pression de service.
EP13003149.5A 2013-06-20 2013-06-20 Procédé d'optimisation du nettoyage de conduites ou d'installations traversées par du liquide Active EP2815816B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13003149.5A EP2815816B1 (fr) 2013-06-20 2013-06-20 Procédé d'optimisation du nettoyage de conduites ou d'installations traversées par du liquide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13003149.5A EP2815816B1 (fr) 2013-06-20 2013-06-20 Procédé d'optimisation du nettoyage de conduites ou d'installations traversées par du liquide

Publications (2)

Publication Number Publication Date
EP2815816A1 EP2815816A1 (fr) 2014-12-24
EP2815816B1 true EP2815816B1 (fr) 2017-08-02

Family

ID=48745588

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13003149.5A Active EP2815816B1 (fr) 2013-06-20 2013-06-20 Procédé d'optimisation du nettoyage de conduites ou d'installations traversées par du liquide

Country Status (1)

Country Link
EP (1) EP2815816B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023057157A1 (fr) 2021-11-29 2023-04-13 Hammann Engineering Gmbh Procédé et dispositif de nettoyage intégré dans le processus de conduites ou de systèmes d'installations techniques au moyen d'impulsions de gaz comprimé modulatrices

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109186319A (zh) * 2018-10-11 2019-01-11 华电能源股份有限公司佳木斯热电厂 一种水气脉冲清洗设备及清洗方法
EP3782742A1 (fr) 2019-08-23 2021-02-24 wattec GmbH Dispositif de nettoyage et procédé de nettoyage

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE673368C (de) 1935-09-14 1939-03-21 Friedrich Von Heinrich Dr Ing Vorrichtung zum Trocknen von bedruckten Papierbogen, insbesondere Kupferdrucken
DE3502969A1 (de) 1985-01-30 1986-07-31 Alfred Dr.-Ing. 7500 Karlsruhe Kuch Verfahren und vorrichtung zur reinigung einer rohrleitung
CH668924A5 (de) 1986-07-28 1989-02-15 Fischer Ag Georg Einrichtung zur spuelung und reinigung einer rohrleitung.
FR2602571B1 (fr) 1986-08-06 1989-02-03 Assainissement Rationnel Pompa Procede de nettoyage d'une conduite notamment d'un reseau de distribution d'eau potable et systeme pour la mise en oeuvre de ce procede
DE59407036D1 (de) 1993-07-12 1998-11-12 Promotec Ag Verfahren, Zusammensetzung und Vorrichtung zur Innenreinigung und Beschichtung von Rohrleitungen
DE4438939C2 (de) 1994-10-31 1997-02-13 Kanal Sanierung Halle Gmbh Verfahren und Einrichtung zum Reinigen von Trinkwasserleitungen und zum Spülen von Trinkwasserleitungsnetzen
US6027572A (en) 1997-06-23 2000-02-22 Princeton Trade And Technologt, Inc Cleaning method for removing biofilm and debris from lines and tubing
DE10204737B4 (de) 2002-02-06 2010-01-07 Eam-Wasserversorgung Gmbh Vorrichtung zum Spülen und Reinigen einer Rohrleitung, insbesondere einer Trinkwasserleitung
JP3947769B2 (ja) 2002-09-19 2007-07-25 株式会社Ｄｅｔｏ 配管洗浄装置
US7375065B2 (en) 2003-12-22 2008-05-20 Gage Products Company Method and composition for cleaning a fluid delivery system
GB0408651D0 (en) 2004-04-16 2004-05-19 Lauzon Normand Cleaning method and system for use with piping systems
DE102008048710A1 (de) 2008-09-24 2010-03-25 Hammann Wasser-Kommunal Ingenieurgesellschaft für kommunale Dienstleistungen mbH Verfahren und Vorrichtung zur Entfernung von Biofilmen und Ablagerungen aus Tränkwassersystemen für Tierhaltungen
DE102008056522A1 (de) 2008-11-08 2010-05-12 Hammann Wasser-Kommunal Ingenieurgesellschaft für kommunale Dienstleistungen mbH Stationäre Vorrichtung und Verfahren zur Reinigung von Rohrleitungen in Gebäuden während Stagnationszeiten
DE102008056623B3 (de) 2008-11-10 2010-02-11 Autoliv Development Ab Aufpralldetektionssystem mit kalibrierbarer Entscheidungslogik
GB0916887D0 (en) * 2009-09-28 2009-11-11 Wellmack Resources Ltd Improved blockage apparatus and method
DE102010013167A1 (de) 2010-03-27 2011-09-29 Hammann Gmbh Verfahren und Vorrichtung zur Entfernung von Ablagerungen und/oder Biofilmen in Wasser- oder Produktleitungen oder Rohrleitungssystemen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023057157A1 (fr) 2021-11-29 2023-04-13 Hammann Engineering Gmbh Procédé et dispositif de nettoyage intégré dans le processus de conduites ou de systèmes d'installations techniques au moyen d'impulsions de gaz comprimé modulatrices
EP4186602A1 (fr) 2021-11-29 2023-05-31 Hammann Engineering GmbH Procédé et dispositif de nettoyage intégré au procédé des conduites ou des systèmes des installations techniques au moyen des impulsions de gaz comprimé modulant

Also Published As

Publication number Publication date
EP2815816A1 (fr) 2014-12-24

Similar Documents

Publication Publication Date Title
DE102009009938B4 (de) Vorrichtung und Verfahren zur Reinigung von Trinkwasserleitungen oder Abwasserleitungen in Fahrzeugen, insbesondere Flugzeugen, Schienenfahrzeugen oder Wasserfahrzeugen
WO1986004530A1 (fr) Procede et dispositif pour nettoyer une tuyauterie
EP2815816B1 (fr) Procédé d'optimisation du nettoyage de conduites ou d'installations traversées par du liquide
DE4438939C2 (de) Verfahren und Einrichtung zum Reinigen von Trinkwasserleitungen und zum Spülen von Trinkwasserleitungsnetzen
CH668924A5 (de) Einrichtung zur spuelung und reinigung einer rohrleitung.
DE3528648A1 (de) Verfahren und einrichtung zur spuelung und reinigung einer rohrleitung
EP0260649B1 (fr) Méthode pour le nettoyage intérieur de systèmes de tubes ramifiés et/ou d'ensembles, ainsi que dispositif pour la réalisation de cette méthode
EP2674228B1 (fr) Procédé de retrait de dépôts et/ou de biofilms dans une conduite par le biais d'une impulsion de pression modulée
DE202010018297U1 (de) Vorrichtung zum hydrodynamischen Beseitigen von Störstellen im Inneren von Rohrleitungen, insbesondere zur Sanierung und Reinigung von wasserführenden Rohrleitungen im häuslichen und industriellen Bereich
DE102010013167A1 (de) Verfahren und Vorrichtung zur Entfernung von Ablagerungen und/oder Biofilmen in Wasser- oder Produktleitungen oder Rohrleitungssystemen
DE4408841C2 (de) Verfahren zur Reinigung von Abfüllanlagen
DE3713427C1 (en) Method for cleaning service water systems or heating installations and device for carrying out the method
DE102008056522A1 (de) Stationäre Vorrichtung und Verfahren zur Reinigung von Rohrleitungen in Gebäuden während Stagnationszeiten
DE102005008603B4 (de) Einrichtung zur segmentweisen Reinigung von Rohrsystemen in Trinkwasserversorgungsanlagen
DE102008056523A1 (de) Verfahren zur Entfernung von Ablagerungen und/oder Biofilmen aus Produkt- oder Prozessleitungen und anderen fluidführenden Bestandteilen industrieller Anlagen
EP4186602B1 (fr) Procédé et dispositif de nettoyage des conduites ou des systèmes au moyen des impulsions de gaz comprimé modulant
EP0840828A1 (fr) Procede d'evacuation des eaux usees
EP0037950A1 (fr) Procédé et appareil pour maintenir automatiquement une pression constante
DE4119947A1 (de) Verfahren und einrichtung zur beseitigung von ablagerungen in wasserleitungen
DE3447827A1 (de) Rohrreinigungsgeraet mit anschlagbolzen im duesenkopf zur beseitigung von harten inkrustierungen in leitungen
DE3427705C2 (fr)
CH717427B1 (de) Verfahren und Vorrichtung zum Reinigen von Rohrleitungssystemen.
DE602004005554T2 (de) Reinigungsmethode einer Kanalisation
DE102006041482B3 (de) Verfahren zum Spülen einer Druckrohrleitung und Abwasserfördervorrichtung
DE10160371B4 (de) Verfahren und Vorrichtung zur Reinigung von Rohrleitungen

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: 20140220

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

17Q First examination report despatched

Effective date: 20160128

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20170222

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): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 913878

Country of ref document: AT

Kind code of ref document: T

Effective date: 20170815

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502013007886

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

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

Ref country code: HR

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: 20170802

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: 20170802

Ref country code: NO

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: 20171102

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: 20170802

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: 20170802

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

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: 20170802

Ref country code: RS

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: 20170802

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: 20170802

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: 20171103

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: 20170802

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: 20171102

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: 20171202

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

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: 20170802

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: 20170802

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: 20170802

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502013007886

Country of ref document: DE

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

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: 20170802

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: 20170802

Ref country code: SM

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: 20170802

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: 20170802

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

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 6

26N No opposition filed

Effective date: 20180503

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

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: 20170802

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

Ref country code: MT

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: 20170802

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20180630

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

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: 20180620

Ref country code: MC

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: 20170802

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: 20180630

Ref country code: IE

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

Effective date: 20180620

Ref country code: LI

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

Effective date: 20180630

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: 20180630

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 913878

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180620

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: 20180620

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: 20170802

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

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: 20170802

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; INVALID AB INITIO

Effective date: 20130620

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: 20170802

Ref country code: MK

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

Effective date: 20170802

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

Ref country code: AL

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: 20170802

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

Ref country code: NL

Payment date: 20220621

Year of fee payment: 10

Ref country code: GB

Payment date: 20220623

Year of fee payment: 10

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

Ref country code: FR

Payment date: 20220621

Year of fee payment: 10

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230515

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20230701

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

Effective date: 20230620

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: 20230701

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

Ref country code: GB

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

Effective date: 20230620

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: 20230630

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

Ref country code: DE

Payment date: 20240626

Year of fee payment: 12