EP1529889B1 - Reinigungsmethode einer Kanalisation - Google Patents

Reinigungsmethode einer Kanalisation Download PDF

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Publication number
EP1529889B1
EP1529889B1 EP04292393A EP04292393A EP1529889B1 EP 1529889 B1 EP1529889 B1 EP 1529889B1 EP 04292393 A EP04292393 A EP 04292393A EP 04292393 A EP04292393 A EP 04292393A EP 1529889 B1 EP1529889 B1 EP 1529889B1
Authority
EP
European Patent Office
Prior art keywords
pump
volume
seconds
line
motor
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
EP04292393A
Other languages
English (en)
French (fr)
Other versions
EP1529889A1 (de
Inventor
Jacques Berthon
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.)
KSB SAS
Original Assignee
KSB SAS
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Filing date
Publication date
Application filed by KSB SAS filed Critical KSB SAS
Publication of EP1529889A1 publication Critical patent/EP1529889A1/de
Application granted granted Critical
Publication of EP1529889B1 publication Critical patent/EP1529889B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F9/00—Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing

Definitions

  • Effluents from urban communities or industrial sites are transferred to treatment plants by large diameter collectors.
  • Sewer discharges are not clear water, but water loaded with various particles of varying sizes (fecal, leaching, oily etc.).
  • the flow is gravitarily from the effluent source to the treatment plant by collectors installed with a predefined slope during civil engineering.
  • the rules of the art require that the flow rate be greater than 0.6 m / sec.
  • the water velocity is kept higher than 0.6 m / sec by calculating the flow of the lifting pumps, taking into account the various head losses and the diameter of the pipe. connecting the station to the general collector. In this case, when the lift pumps are operating, the water velocity is sufficient so that there are no deposits in the pipeline.
  • the flow velocity in the street collector is not constant and can be much lower than the speed necessary to cause the deposits.
  • flushing systems are installed upstream of the sections of collectors with a low slope.
  • the principle is to store a large reserve of water and release it sharply into the collector. This "water plug” fills the section of the piping increasing punctually the pressure and the speed of water above 0.6 m / sec. and leads in its passage any deposits.
  • the device "Flush" although very effective does not modulate the cleaning flow.
  • An alternative is to start a high flow lift pump to provide a sharp flow.
  • the invention is directed to a process for cleaning a pipeline that is more efficient than the previous methods, in particular allowing a better modulation of the cleaning flow of the pipe and which is suitable as a cleaning fluid for the effluents themselves.
  • the method of cleaning a pipe is defined in claim 1.
  • a third volume of liquid under pressure Preferably after the end of the discharge of the second volume is repressed, less than 10 seconds and preferably less than 5 seconds after the end of this delivery of the second volume, in the pipe by the pump a third volume of liquid under pressure, at a rate and for a duration such that liquid occupies a whole cross section of the pipe.
  • the discharge pressure may be in particular between 1 and 2 bar.
  • the liquid may be water, effluents, an aqueous suspension.
  • a particularly effective effect of waves is created in the channel.
  • the first discharge sends into the pipe a first volume of water or plug having a sufficient water speed to scan the deposits.
  • a depression is created upstream of the first plug which amplifies the action of the next plug by suction effect.
  • the pressure drop in the pipe is measured and if it is greater than a given value, the second discharge is carried out and preferably the third discharge. It is possible to measure the pressure drop, in particular by the motor's phi cosine. If, therefore, the first refoulement has been sufficiently effective, the following can be dispensed with.
  • the cleaning can be well modulated according to the condition of the pipe.
  • the invention also relates to a pump unit comprising an AC motor intended to drive a pump at a given speed, and characterized in that the motor is powered by means of a frequency converter and, preferably, the motor operates, at the given speed, at a point, of the magnetic induction curve of the motor as a function of the effective intensity of the supply current, away from saturation.
  • a motor driving a pump of a motor-pump unit is made to work at the magnetic saturation so that if the frequency of its supply current is increased, the torque corresponding to this increase in power will not be available.
  • a motor is used which is not saturated and therefore oversized but which makes it possible to obtain this increase in speed and power almost instantaneously by varying the frequency of the supply current.
  • the engine has a great dynamic so that in less than 10 seconds and especially in less than 5 seconds, the pump of the pump set can give a considerable increase in flow as is necessary to form the plugs according to the invention.
  • the frequency converter be integrated with the manufacturing pump.
  • FIG. 1 is a diagram of an installation for cleaning a pipeline by a method according to the invention.
  • FIG. 2 represents in FIG. 2a the characteristic curve of a pump and in FIG. 2b in a corresponding manner, the variation of the induction of the motor which drives the pump according to the intensity of the supply current.
  • another pump unit comprising a pump 5, a motor 6, a frequency converter 7, and an analysis circuit 8 including the cosine phi engine, all being powered by a line 9 AC power supply connected to the network.
  • the pump unit 5 to 8 is placed in a pit 10 filled with effluents E. Its discharge pipe 11 opens into a branch 12 whose other end opens into the collector C.
  • the pump unit 5 to 8 has the characteristics illustrated in FIGS. 2a and 2b.
  • Figure 2a shows the pump pressure in ordinate as a function of the abscissa flow (the pressure being the total head).
  • the characteristic curve is the curve I.
  • the curve II At 50 Hz, there is the curve II.
  • the nominal flow rate at 50 Hz is Q1 nom.50Hz.
  • Q2 name At 100 Hz, it goes to the value indicated on the curve by Q2 name.
  • 100 Hz the corresponding pressures being respectively H (50 Hz) and H (100 Hz). Since the power of the pump is proportional to the cube of speed or frequency, a considerable plug can be obtained. And this is possible as shown in Figure 2b because, while at the flow Q1 name.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Cleaning In General (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Sewage (AREA)
  • Pipeline Systems (AREA)

Claims (6)

  1. Reinigungsverfahren für eine Kanalisation durch Förderung eines ersten Flüssigkeitsvolumens unter Druck durch eine Zweigleitung mit Hilfe einer Pumpe mit einer derartigen Durchflussmenge und während einer derartigen Dauer, dass die Flüssigkeit einen ganzen Abschnitt der Kanalisation belegt, wobei man die Abflussleitung der Pumpe in die Zweigleitung einmünden lässt und man die Förderung des ersten Volumens unterbricht, dadurch gekennzeichnet, dass man weniger als 10 und vorzugsweise weniger als 5 Sekunden nach dem Ende der Förderung des ersten Volumens ein zweites Volumen an Flüssigkeit unter Druck mit einer derartigen Durchflussmenge und während einer derartigen Dauer fördert, dass die Flüssigkeit einen ganzen geraden Abschnitt der Kanalisation belegt, so dass eine Welle entsteht.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass man weniger als 10 und vorzugsweise weniger als 5 Sekunden nach dem Ende der Förderung des zweiten Volumens mittels der Pumpe ein drittes Flüssigkeitsvolumen unter Druck mit einer derartigen Durchflussmenge und während einer derartigen Dauer in die Kanalisation fördert, dass die Flüssigkeit einen ganzen geraden Abschnitt der Kanalisation belegt.
  3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass man bei der ersten Förderung den Druckverlust in der Kanalisation misst und wenn dieser oberhalb eines vorgegebenen Wertes liegt, zur nächsten Förderung übergeht.
  4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass man als Pumpe eine Motorpumpengruppe nutzt, die einen Wechselstrommotor (6) umfasst, der dazu bestimmt ist, eine Pumpe (5) mit einer gegebenen Geschwindigkeit anzutreiben, wobei der Motor (6) durch einen Frequenzwandler versorgt wird.
  5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass der Wandler (7) in die Motorpumpengruppe integriert ist.
  6. Verfahren nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass man den Motor (6) mit gegebener Geschwindigkeit an einem Punkt der magnetischen Induktionskurve des Motors (6) in Abhängigkeit vom effektiven Motorstrom funktionieren lässt, der von der Sättigung entfernt ist.
EP04292393A 2003-11-04 2004-10-08 Reinigungsmethode einer Kanalisation Expired - Lifetime EP1529889B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0312924A FR2861762B1 (fr) 2003-11-04 2003-11-04 Procede de curage d'une canalisation et groupe motopompe particulierement adapte a ce procede
FR0312924 2003-11-04

Publications (2)

Publication Number Publication Date
EP1529889A1 EP1529889A1 (de) 2005-05-11
EP1529889B1 true EP1529889B1 (de) 2007-03-28

Family

ID=34429880

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04292393A Expired - Lifetime EP1529889B1 (de) 2003-11-04 2004-10-08 Reinigungsmethode einer Kanalisation

Country Status (7)

Country Link
EP (1) EP1529889B1 (de)
AT (1) ATE358217T1 (de)
DE (1) DE602004005554T2 (de)
DK (1) DK1529889T3 (de)
ES (1) ES2280015T3 (de)
FR (1) FR2861762B1 (de)
PT (1) PT1529889E (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107847988B (zh) * 2015-06-26 2021-06-08 迪泰克塔国际有限公司 排水管清洁装置和清洁方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0246562B2 (de) * 1986-05-23 1994-08-10 Oskar Vollmar GmbH Verfahren und Anlage zur Verbesserung des Durchflusses eines Abflussrohres
ATE348224T1 (de) * 1999-11-04 2007-01-15 Josef Ringhofer Verfahren und vorrichtung zum periodischen durchspülen einer abwasser-rohrleitung
DE10041021A1 (de) * 2000-08-22 2002-03-07 Emilia Steinicke Verfahren zur Reinigung eines Kanals

Also Published As

Publication number Publication date
DE602004005554D1 (de) 2007-05-10
EP1529889A1 (de) 2005-05-11
DE602004005554T2 (de) 2007-12-13
DK1529889T3 (da) 2007-08-13
FR2861762A1 (fr) 2005-05-06
ES2280015T3 (es) 2007-09-01
PT1529889E (pt) 2007-06-21
ATE358217T1 (de) 2007-04-15
FR2861762B1 (fr) 2006-12-15

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