EP0246562B2 - Method and device for modifying the flow in a sewer - Google Patents

Method and device for modifying the flow in a sewer Download PDF

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Publication number
EP0246562B2
EP0246562B2 EP87107016A EP87107016A EP0246562B2 EP 0246562 B2 EP0246562 B2 EP 0246562B2 EP 87107016 A EP87107016 A EP 87107016A EP 87107016 A EP87107016 A EP 87107016A EP 0246562 B2 EP0246562 B2 EP 0246562B2
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EP
European Patent Office
Prior art keywords
water
rinsing
discharge pipe
jet
flow
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EP87107016A
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German (de)
French (fr)
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EP0246562B1 (en
EP0246562A3 (en
EP0246562A2 (en
Inventor
Heinz Fahrner
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Oskar Vollmar GmbH
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Oskar Vollmar GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B17/00—Methods preventing fouling
    • B08B17/02—Preventing deposition of fouling or of dust
    • 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

Definitions

  • the invention relates to a method for improving the flow of the drain pipe of a sewer pipe, a rain basin or the like. For discharging the waste water from it culvert arrangement and a system for carrying out this method.
  • Culvert arrangements sewer pipes, rain basins and the like.
  • wastewater sewer systems for communal wastewater also wastewater or rainwater or the like are connected downstream in order to connect this region, i.e. the region of the culvert arrangement, to a constantly filled with wastewater.
  • Such flow meters can measure the flow with good accuracy if the flow measuring point is completely filled with waste water.
  • the flow meter may be an electromagnetic flow meter, an ultrasonic flow meter, or any other flow meter sensing the flow rate.
  • These flow rate-dependent flow meters of which magnetic-inductive flow meters are used in wastewater technology, are arranged on a drain pipe of the culvert arrangement.
  • the flow of the drain pipe becomes relatively small in dry weather, it still remains completely filled in the area of the flow measuring point by the flow measuring point being so deep in the culvert arrangement that this is the case.
  • the flow velocities resulting from the low flow rates in the drain pipe permit the removal of dirt carried by the waste water, such as mud, sand or the like. This can adversely affect the measuring accuracy of the flow meter and can also have other adverse effects.
  • the flow meter can be used, for example, to determine flow rates for cost calculations or the like, and it is for this reason that exact flow measurement is necessary.
  • impurities such as sand, mud or the like deposited in the drain pipe of the culvert arrangement, but also knots, paper or other coarse impurities can be removed simply and inexpensively by flushing them away, both by converting them into a floating state in the flowing waste water , as well as by draining along the wall of the drain pipe.
  • the rinsing water also increases the current flow rate of the wastewater, at least locally.
  • a time switch or program control device automatically actuates the jet cleaning device, that is, switches the at least one rinse water jet on and off.
  • all rinse water jets can be switched on and off together, or that at least two rinse water jets can be switched on and off independently of one another by means of a corresponding plurality of shut-off valves.
  • the latter has the advantage that the rinsing water jets can also be used in sequence, i.e. can switch on and off without time overlap or with time overlap, which can often improve the cleaning effect or, if necessary, also save flushing water. For example, if the sewage pipe is only slightly contaminated, it can be cleaned by means of a single flushing water jet, and if it is heavily contaminated, several flushing water jets can be switched on and off.
  • the rinse water jet or jets are set at intervals of one or more hours each for a predetermined period of time, for example one minute, for cleaning the drain pipe, with these different rinse water jets also being timed in the case of several outlet openings for rinse water jets can be switched on and off staggered.
  • At least one outlet opening for rinsing water upstream of the flow measuring point can preferably be provided to arrange at least one outlet opening for rinsing water upstream of the flow measuring point, which makes it particularly easy to keep it clean.
  • at least one rinse water jet often expediently all rinse water jets in the case of multiple rinse water jets, is introduced into the drain pipe downstream of the flow measuring point, whereby one or these rinse water jets can preferably be directed towards the flow measuring point, that is to say in the opposite direction the direction of flow of the waste water. This enables particularly strong wastewater turbulence to be generated.
  • the outlet opening or openings for the rinsing water can be formed by a nozzle or nozzles or in some other way.
  • the outlet opening can often be expediently the outlet opening of a simple line pipe for rinsing water, which then forms a jet pipe as if it were provided with a nozzle on the outlet side, which is of course also possible.
  • the initial speed of the individual jet of flushing water can expediently be greater, preferably much greater than the flow rate of the waste water at the nominal value of the flow and the flushing water supply turned off.
  • the flushing water jet can expediently be a strong jet of high momentum.
  • the rinse water required for the jet cleaning device can in some cases not be wastewater, but groundwater, river water, drinking water or the like.
  • this can be sucked in by a suitable collection point, possibly even from the culvert arrangement, by means of a pump and pumped to the jet cleaning device.
  • the jet cleaning device By switching this pump on and off, the jet cleaning device can be put into operation and out of operation accordingly.
  • At least one valve can also be provided for opening and shutting off the flushing water line or lines of the jet cleaning device. If drinking water is used, the hydraulic pressure in the drinking water network is generally sufficient for the radiation of this drinking water into the drain pipe by means of the jet cleaning device, so that this jet cleaning device then only requires one or more shut-off valves for its switching on and off, which can be opened and shut off automatically.
  • the individual outlet opening of the jet cleaning device is designed as the outlet mouth of a separate jet pipe which is fixedly arranged on the drain pipe and which has or has no nozzle at its downstream end, or to provide several outlet openings on a mouthpiece of at least one rinsing water pipe which is fixed on the drain pipe.
  • the jet cleaning device has at least two outlet openings for rinsing water, since this allows greater effects to be achieved with smaller amounts of rinsing water than with just one jet. It is particularly expedient to provide that the jet direction of at least one outlet opening is directed obliquely to the longitudinal axis of the drain pipe so that this jet direction exerts a thrust on the waste water in the drain pipe in the direction of the flow rate of this waste water. In this way, the wastewater can be put into a swirl flow, which has a particularly intensive cleaning effect. However, it is also possible and often expedient to introduce at least one flushing water jet into the drain pipe parallel to the longitudinal direction of the drain pipe, preferably along the bottom of the drain pipe.
  • the or each outlet opening for the flushing water can expediently have a clear outlet cross section of 1 to 2 inches and the flushing water can be under a pressure of 3 to 10 bar in the line or lines leading to the outlet opening or openings.
  • the culvert arrangement 9 shown in FIG. 1 has a culvert forward shaft 11, a measuring and throttle shaft 12 and a culvert downstream shaft 13.
  • the culvert duct (culvert inlet structure) there is an upwardly open channel or channel 8, to which a drain pipe 10 receiving the waste water flowing therein connects, which is arranged in an upwardly open channel or channel 8 arranged in the downstream shaft 13 flows out, the or that leads to a further sewer pipe 14 '.
  • This culvert arrangement 9 is connected to a sewer pipe 14 of a sewage sewer system and is used to drain the sewage water to a further sewer system, which can lead, for example, to a sewage treatment plant, other rainwater retention or the like.
  • the minimum water level in the culvert arrangement 9 is indicated by the dotted line 15. There is no flow through him anymore.
  • the drain pipe 10 is flowed through by waste water in the direction of the arrow A, the flow rate of which is measured by means of a magnetic inductive flow meter 16, which measures the flow at the illustrated point of the drain pipe 10, where this is always completely filled with waste water, this point being located between two throttle valves 17, 18.
  • jet pipes 21, 22, 23 of a jet cleaning device 29 open into the drain pipe 10.
  • these jet pipes are straight, circular-cylindrical rigid pipes, the outlet openings for flushing water-forming outlet openings 24, 25, 26 are flush with the inner wall of the peripheral wall of the drain pipe 10, as can be seen particularly clearly for the outlet 25 in FIG. 2 sees which mouths do not protrude into the interior of the drain pipe 10 and thus do not form any flow obstacles in the drain pipe 10.
  • the jet pipes 21-23 are arranged obliquely to the longitudinal direction of the drain pipe in their area as shown so that the strong jets of water flowing out of them according to the arrows B exert such thrust or impulse on the waste water in the drain pipe 10, which in each case also in vectorial decomposition has a vectorial component VF directed in the direction of flow of the wastewater, so that the strong jets of flushing water push the wastewater in its direction of flow and are thus also driving jets for the wastewater which support its flow in the direction of flow (arrow A).
  • the jet pipe 22 opens at the deepest point in the drain pipe 10 and the two other jet pipes 21, 23 also open into the lower circumferential half of the drain pipe, but are seen from the lowest point of the drain pipe by about 30 to 45 ° in the circumferential direction of the round drainpipe 10 to the left and right as shown angularly offset and the outlet openings are also offset in the longitudinal direction of the drainpipe 10 as shown, so that the outlet opening 24 is still in the steep downward region 27 and the outlet opening 26 in the flat rising region 28 of the Drain pipe 10 is located.
  • the inclination of the jet direction B of the individual jet pipe 21, 22, 23 to the longitudinal axis of the relevant area of the drain pipe 10 is approximately 40 to 50 °. This angle can also be larger or smaller.
  • the jet directions of these jet pipes 21, 22, 23 can be directed approximately towards the longitudinal axis of the drain pipe 10 or often pass particularly cheaply at a distance from this longitudinal axis. It is particularly favorable if the water jets flowing out of these jet pipes 21, 22, 23 in the drain pipe generate a swirl flow towards the downstream end of the drain pipe, but other flow patterns can also be provided. It is essential that the flushing water jets in the drain pipe 10 cause the removal of sludge and other impurities accumulated in it in the flow direction A of the waste water 10.
  • rinsing water jets whirl up the relevant impurities from the bottom of the drain pipe and cause them to float in the wastewater that then sweeps them away, and sufficient rinsing of wastewater from the drain pipe is effected for this purpose even at low flow rates of the wastewater.
  • the rinse water jets can also coarser impurities such as branches or the like. wash away immediately.
  • the rinsing water jets can also generate strong turbulence which further promotes the cleaning of the drain pipe 10 and can also be “reflected” several times on the pipe wall and thus also deflected to the bottom of the drain pipe in the case of the jet directions shown. If necessary, you can also point at least one jet pipe directly to the bottom of the drain pipe.
  • the outlet openings 24, 25, 26 are arranged at the lowest and near the lowest region 20 of the drain pipe 10.
  • At least one jet pipe is arranged at a short distance from this flow measuring point in front of or behind it and is directed towards it.
  • At least one jet pipe can also be arranged on the upper circumferential half of the drain pipe 10 and then preferably its jet direction can be directed obliquely downward in the flow direction of the waste water, as is shown in broken lines as an example for a jet pipe 21 'in FIG. 2.
  • the jet pipes 21, 22, 23 are connected to a common pressurized water supply line 31.
  • a shut-off valve 32 is inserted into this feed line and can be opened and closed by an actuator 33. This is controlled by a timer or program control device 34 for opening and locking. E.g. it can be provided that the shut-off valve 32 is opened at intervals of one hour each for one minute to introduce rinsing water jets through the jet pipes 21, 22, 23 into the drain pipe 10.
  • An on-off switch 35 is interposed in the line to the actuator 33 and is always opened by an actuator 36 as long as the flow measuring device 16 feels that the flow is above a predetermined limit value above which there are no contaminants in the drain pipe, such as sand, mud or the like. As long as this limit of the flow is undershot, the switch 35 is closed and the drain pipe 10 is automatically briefly rinsed by means of the rinse water jets at the predetermined time intervals.
  • each jet pipe 21, 22, 23, can each have their own valve 32a, 32b, 32c, which can be opened and shut off by an actuator 33a, 33b, 33c,
  • one solenoid valve each can be assigned and these valves 32a, 32b and 32c can then also be opened and shut off at different times relative to one another by means of the time switch or program control device 34 ', which has separate outputs for independently actuating the actuators 33a, 33b and 33c .
  • These beam tubes can then also be opened and shut off at different times, for example in sequence, or in overlapping time intervals or in some other way at different times or, if desired, together.
  • the drain pipe 28 of the culvert arrangement 9 can optionally also extend from the pipe 14 to the pipe 14 '.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Cleaning In General (AREA)
  • Sink And Installation For Waste Water (AREA)

Description

Die Erfindung betrifft ein Verfahren zur Verbesserung des Durchflusses des Abflußrohres einer einem Kanalrohr, einem Regenbecken oder dergl. zum Abführen des Abwassers aus ihm dienenden Düker-Anordnung und eine Anlage zur Durchführung dieses Verfahrens.The invention relates to a method for improving the flow of the drain pipe of a sewer pipe, a rain basin or the like. For discharging the waste water from it culvert arrangement and a system for carrying out this method.

Düker-Anordnungen werden Kanalrohren, Regenbecken und dergl. von Abwasser-Kanalisationen für kommunale Abwässer, ebenfalls Abwasser bi Idendes Regenwasser oder dergl. nachgeschaltet, um an einem ständig mit Abwasser gefüllten Bereich des Abflußrohres der Düker-Anordnung die diesen Bereich, d. h. eine Durchflußmeßstelle durchströmende Abwassermenge/Zeit (= Durchfluß) mittels eines Durchflußmessers messen zu können, der die Fließgeschwindigkeit des die Durchflußmeßstelle durchströmenden Abwassers fühlt. Derartige Durchflußmesser können den Durchfluß mit guter Genauigkeit messen, sofern die Durchflußmeßstellevoll mit Abwasser gefüllt ist. Der Durchflußmesser kann ein magnetisch-induktiver Durchflußmesser, ein Ultraschall-Durchflußmesser oder ein sonstiger die FließgeschwindigkeitfühlenderDurchflußmessersein. Diese fließgeschwindigkeitsabhängigen Durchflußmesser, von denen in der Abwassertechnik insbesondere die magnetischinduktiven Durchflußmesser Anwendung finden, werden an einem Abflußrohr der Düker-Anordnung angeordnet.Culvert arrangements, sewer pipes, rain basins and the like. Of wastewater sewer systems for communal wastewater, also wastewater or rainwater or the like are connected downstream in order to connect this region, i.e. the region of the culvert arrangement, to a constantly filled with wastewater. H. to be able to measure a quantity of waste water / time flowing through a flow measuring point (= flow) by means of a flow meter, which senses the flow rate of the waste water flowing through the flow measuring point. Such flow meters can measure the flow with good accuracy if the flow measuring point is completely filled with waste water. The flow meter may be an electromagnetic flow meter, an ultrasonic flow meter, or any other flow meter sensing the flow rate. These flow rate-dependent flow meters, of which magnetic-inductive flow meters are used in wastewater technology, are arranged on a drain pipe of the culvert arrangement.

Wenn der Durchfluß des Abflußrohres bei Trockenwetter relativ klein wird, bleibt es dennoch im Bereich der Durchflußmeßstelle ständig voll gefüllt, indem die Durchflußmeßstelle in der Düker-Anordnung so tief liegt, daß dies der Fall ist. Bei geringen Durchflüssen besteht jedoch die Gefahr der Verschlammung und Verstopfung des Abflußrohres, weil die aus den niedrigen Durchflußmengen resultierenden Fließgeschwindigkeiten im Abflußrohr das Absetzen von vom Abwasser mitgeführtem Schmutz, wie Schlamm, Sand oder dergl., zulassen. Dies kann sich nachteilig auf die Meßgenauigkeit des Durchflußmessers auswirken und auch sonstige nachteilige Auswirkungen haben.If the flow of the drain pipe becomes relatively small in dry weather, it still remains completely filled in the area of the flow measuring point by the flow measuring point being so deep in the culvert arrangement that this is the case. At low flow rates, however, there is a risk of silting up and clogging of the drain pipe, because the flow velocities resulting from the low flow rates in the drain pipe permit the removal of dirt carried by the waste water, such as mud, sand or the like. This can adversely affect the measuring accuracy of the flow meter and can also have other adverse effects.

Der Durchflußmesser kann bspw. der Ermittlung von Abflußmengen für Kostenberechnungen oder dergl. dienen und es ist schon deshalb genaue Durchflußmessung notwenig.The flow meter can be used, for example, to determine flow rates for cost calculations or the like, and it is for this reason that exact flow measurement is necessary.

Bisher reinigte man solche Düker-Anordnungen mittels Saugwagen oder von Hand. Doch ist dies kostenaufwendig, zeitraubend und gibt keine Gewähr für möglichst guten Durchfluß des Abwassers durch das Abflußrohr der Düker-Anordnung.So far, such culvert arrangements have been cleaned by means of suction vehicles or by hand. However, this is costly, time-consuming and does not guarantee the best possible flow of the waste water through the drain pipe of the culvert arrangement.

Es ist deshalb Aufgabe der Erfindung, ein Verfahren der eingangs genannten Art zu schaffen, welches den Durchfluß eines Abflußrohres einer Düker-Anordnung in einer Abwasserkanalisation auf einfache, kostengünstige Weise zu verbessern ermöglicht.It is therefore an object of the invention to provide a method of the type mentioned at the outset which enables the flow through a drain pipe of a culvert arrangement in a sewerage system to be improved in a simple, inexpensive manner.

Diese Aufgabe wird erfindungsgemäß durch das Verfahren gemäß Anspruch 1 gelöst. Eine erfindungsgemäße Anlage Durchführung dieses Verfahrens ist in Anspruch 6 beschrieben.This object is achieved by the method according to claim 1. A system according to the invention performing this method is described in claim 6.

Es ist zwar durch die DE-C 362 026 bekannt, bei einem teilgefüllten Kanalisationsrohr den sich in ihm ablagernden organischen Schlamm mittels Druckwasserstrahlen, die aus in die Sohle des Kanalisationsrohres verschieden hoch eingesetzten Düsen ausströmen, aufzuwirbeln und so weiterzufördern, doch liegen bei Düker-Anordnungen andere Bedingungen vor, da hier das Abflußrohr im Durchflußmeßbereich voll gefüllt ist und sich in ihm insbesondere schwerere Verunreinigungen, wie Sand, Äste und dgl. ansammeln.It is known from DE-C 362 026 to whirl up and further convey the organic sludge which is deposited in it with a partially filled sewer pipe by means of pressurized water jets which flow out from nozzles inserted at different heights into the sewer pipe bottom, but there are culvert arrangements other conditions, since here the drain pipe is completely filled in the flow measuring area and heavier impurities such as sand, branches and the like accumulate in it.

Durch das erfindungsgemäße Verfahren lassen sich imAbflußrohrderDüker-Anordnung abgelagerte Verunreinigungen, wie Sand, Schlamm oder dgl., aber auch Aste, Papier oder sonstige gröbere Verunreinigungen einfach und kostengünstig entfernen, indem sie fortgespült werden, und zwar sowohl durch Überführen in einen Schwebezustand im strömenden Abwasser, wie auch durch Abführen entlang der Wandung des Abflußrohres. Auch wird durch das Spülwasser die momentane Fließgeschwindigkeit des Abwassers zumindest örtlich erhöht. Durch das erfindungsgemäße Verfahren läßt sich das Abflußrohr so sauber halten, daß sich auch nach langen Trockenwetterperioden noch genaue Durchflußmessungen ergeben.By means of the method according to the invention, impurities such as sand, mud or the like deposited in the drain pipe of the culvert arrangement, but also knots, paper or other coarse impurities can be removed simply and inexpensively by flushing them away, both by converting them into a floating state in the flowing waste water , as well as by draining along the wall of the drain pipe. The rinsing water also increases the current flow rate of the wastewater, at least locally. By means of the method according to the invention, the drain pipe can be kept so clean that accurate flow measurements can still be obtained even after long dry weather periods.

Es ist vorgesehen, daß eine Zeitschalt- oder Programmsteuereinrichtung selbsttätig die Strahlreinigungsvorrichtung betätigt, also den mindestens einen Spülwasserstrahl an- und abstellt. Im Falle mehrerer Austrittsöffnungen für Spülwasserstrahlen kann dabei vorgesehen sein, daß alle Spülwasserstrahlen jeweils gemeinsam an- und abgestellt werden können oder daß mindestens zwei Spülwasserstrahlen unabhängig voneinander mittels einer entsprechenden Mehrzahl von Absperrventilen an- und abgestellt werden können. Letzteres hat den Vorteil, daß man die Spülwasserstrahlen auch in Sequenz d.h. ohne zeitliche Überlappung oder unter zeitlicher Überlappung an- und abstellen kann, was oft die Reinigungswirkung noch verbessern läßt oder ggfs. auch Spülwasser einsparen läßt. Z. Bsp. kann bei nur schwacher Verschmutzung des Abwasserrohres dieses mittels eines einzigen Spülwasserstrahles gereinigt werden und bei stärkerer Verschmutzung können mehrere Spülwasserstrahlen an- und abgestellt werden.It is provided that a time switch or program control device automatically actuates the jet cleaning device, that is, switches the at least one rinse water jet on and off. In the case of several outlet openings for rinse water jets, it can be provided that all rinse water jets can be switched on and off together, or that at least two rinse water jets can be switched on and off independently of one another by means of a corresponding plurality of shut-off valves. The latter has the advantage that the rinsing water jets can also be used in sequence, i.e. can switch on and off without time overlap or with time overlap, which can often improve the cleaning effect or, if necessary, also save flushing water. For example, if the sewage pipe is only slightly contaminated, it can be cleaned by means of a single flushing water jet, and if it is heavily contaminated, several flushing water jets can be switched on and off.

Bspw. kann vorgesehen sein, daß der oder die Spülwasserstrahlen in Abständen von einer oder mehreren Stunden jeweils eine vorbestimmte Zeitdauer, bspw. eine Minute lang, zur Reinigung des Abflußrohres angestellt werden, wobei im Falle mehrerer Austrittsöffnungen für Spülwasserstrahlen diese unterschiedlichen Spülwasserstrahlen auch zeitlich zueinander versetzt an- und abgestellt werden können.E.g. It can be provided that the rinse water jet or jets are set at intervals of one or more hours each for a predetermined period of time, for example one minute, for cleaning the drain pipe, with these different rinse water jets also being timed in the case of several outlet openings for rinse water jets can be switched on and off staggered.

Bevorzugt kann vorgesehen sein, mindestens eine Austrittsöffnung für Spülwasser stromaufwärts vor der Durchflußmeßstelle anzuordnen, was deren Sauberhaltung besonders gut erreichen läßt. Jedoch kann in manchen Fällen auch vorgesehen sein, daß mindestens ein Spülwasserstrahl, oftzweckmäßig im Falle mehrere Spülwasserstrahlen alle Spülwasserstrahlen, stromabwärts der Durchflußmeßstelle in das Abflußrohr eingeleitet wird bzw. werden, wobei man diesen oder diese Spülwasserstrahlen vorzugsweise auf die Durchflußmeßstelle zu richten kann, also entgegen der Strömungsrichtung des Abwassers. Hierdurch lassen sich besonders starke Abwasserturbulenzen erzeugen.It can preferably be provided to arrange at least one outlet opening for rinsing water upstream of the flow measuring point, which makes it particularly easy to keep it clean. However, in some cases it can also be provided that at least one rinse water jet, often expediently all rinse water jets in the case of multiple rinse water jets, is introduced into the drain pipe downstream of the flow measuring point, whereby one or these rinse water jets can preferably be directed towards the flow measuring point, that is to say in the opposite direction the direction of flow of the waste water. This enables particularly strong wastewater turbulence to be generated.

Auch kann in vielen Fällen zweckmäßig vorgesehen sein, daß zur Ersparnis an Wasser für die Strahlreinigungsvorrichtung diese nur bei Trockenwetter oder besonders zweckmäßig nur dann in vorzugsweise regelmäßigen Zeitabständen eingeschaltet wird, wenn der vom Durchflußmesser gemessene Durchfluß unter einem vorbestimmten Wert (Grenzwert) liegt, welcher so vorgesehen ist, dass oberhalb ihm nicht die Gefahr von stärkeren Ablagerungen von Sand und Schlamm im Abflußrohr infolge der hohen Fließgeschwindigkeiten im Abflußrohr besteht.In many cases it can also be provided that, to save water for the jet cleaning device, this is only switched on in dry weather or particularly expediently, preferably at regular intervals, if the flow measured by the flow meter is below a predetermined value (limit value), which is so it is envisaged that there is no danger of greater deposits of sand and mud in the drain pipe due to the high flow velocities above it.

Die Austrittsöffnung bzw. -öffnungen für das Spülwasser kann bzw. können durch eine Düse bzw. Düsen oder auch auf andere Weise gebildet sein. Beispielsweise kann die Austrittsöffnung oft zweckmäßig die Austrittsöffnung eines einfachen Leitungsrohres für Spülwasser sein, das dann genauso ein Strahlrohr bildet, als wenn es austrittsseitig mit einer Düse versehen ist, was natürlich ebenfalls möglich ist. Die Anfangsgeschwindigkeit des einzelnen Spülwasserstrahis kann zweckmäßig größer, vorzugsweise viel größer sein als die Fließgeschwindigkeit des Abwassers beim Nennwert des Durchflusses und abgestellter Spülwasserzufuhr. Der Spülwasserstrahl kann zweckmäßig ein starker Strahl hohen Impulses sein. Das für die Strahlreinigungsvorrichtung benötigte Spülwasser kann in manchen Fällen kein Abwasser, sondern Grundwasser, Flußwasser, Trinkwasser oder dergl. sein. Im Falle von Abwasser kann dies von einer geeigneten Sammelstelle, ggfs. sogar aus der Düker-Anordnung mittels einer Pumpe angesaugt und zu der Strahlreinigungsvorrichtung gepumpt werden. Durch Ein- und Ausschalten dieser Pumpe kann entsprechend die Strahlreinigungsvorrichtung in Betrieb und außer Betrieb gesetzt werden. Es kann auch mindestens ein Ventil zum Öffnen und Absperren der Spülwasserleitung oder -leitungen der Strahlreinigungsvorrichtung vorgesehen sein. Wenn Trinkwasser verwendet wird, genügt im allgemeinen der hydraulische Druck im Trinkwassernetz für das Einstrahlen dieses Trinkwassers in das Abflußrohr mittels der Strahlreinigungsvorrichtung, so daß dann diese Strahlreinigungsvorrichtung zu ihrem Einschalten und Ausschalten nur ein oder mehrere Absperrventile benötigt, die selbsttätig geöffnet und abgesperrt werden können.The outlet opening or openings for the rinsing water can be formed by a nozzle or nozzles or in some other way. For example, the outlet opening can often be expediently the outlet opening of a simple line pipe for rinsing water, which then forms a jet pipe as if it were provided with a nozzle on the outlet side, which is of course also possible. The initial speed of the individual jet of flushing water can expediently be greater, preferably much greater than the flow rate of the waste water at the nominal value of the flow and the flushing water supply turned off. The flushing water jet can expediently be a strong jet of high momentum. The rinse water required for the jet cleaning device can in some cases not be wastewater, but groundwater, river water, drinking water or the like. In the case of waste water, this can be sucked in by a suitable collection point, possibly even from the culvert arrangement, by means of a pump and pumped to the jet cleaning device. By switching this pump on and off, the jet cleaning device can be put into operation and out of operation accordingly. At least one valve can also be provided for opening and shutting off the flushing water line or lines of the jet cleaning device. If drinking water is used, the hydraulic pressure in the drinking water network is generally sufficient for the radiation of this drinking water into the drain pipe by means of the jet cleaning device, so that this jet cleaning device then only requires one or more shut-off valves for its switching on and off, which can be opened and shut off automatically.

Es ist oft zweckmäßig, die einzelne Austrittsöffnung der Strahlreinigungsvorrichtung als Austrittsmündung eines gesonderten, am Abflußrohr fest angeordneten Strahlrohres auszubilden, das an seinem stromabwärtigen Ende eine Düse aufweist oder nicht, oder mehrere Austrittsöffnungen an einem Mundstück mindestens einer am Abflußrohr fest angeordneten Spülwasserleitung vorzusehen.It is often expedient to design the individual outlet opening of the jet cleaning device as the outlet mouth of a separate jet pipe which is fixedly arranged on the drain pipe and which has or has no nozzle at its downstream end, or to provide several outlet openings on a mouthpiece of at least one rinsing water pipe which is fixed on the drain pipe.

Bevorzugt kann vorgesehen sein, daß die Strahlreinigungsvorrichtung mindestens zwei Austrittsöffnungen für Spülwasser aufweist, da hierdurch mit geringeren Spülwassermengen größere Wirkungen als mit nur einem Strahl erzielbar sind. Besonders zweckmäßig ist es, vorzusehen, daß die Strahlrichtung mindestens einer Austrittsöffnung schräg zur Längsachse des Abflußrohres so gerichtet ist, daß diese Strahlrichtung auf das im Abflußrohr befindliche Abwasser Schub in Richtung der Fließgeschwindigkeit dieses Abwassers ausübt. Hierdurch läßt sich ggfs. das Abwasser in eine Drallströmung versetzen, die besonders intensiv reinigend wirkt. Es ist jedoch auch möglich und oft zweckmäßig, mindestens einen Spülwasserstrahl parallel zur Längsrichtung des Abflußrohres in dieses einzuleiten, vorzugsweise entlang dem Boden des Abflußrohres.It can preferably be provided that the jet cleaning device has at least two outlet openings for rinsing water, since this allows greater effects to be achieved with smaller amounts of rinsing water than with just one jet. It is particularly expedient to provide that the jet direction of at least one outlet opening is directed obliquely to the longitudinal axis of the drain pipe so that this jet direction exerts a thrust on the waste water in the drain pipe in the direction of the flow rate of this waste water. In this way, the wastewater can be put into a swirl flow, which has a particularly intensive cleaning effect. However, it is also possible and often expedient to introduce at least one flushing water jet into the drain pipe parallel to the longitudinal direction of the drain pipe, preferably along the bottom of the drain pipe.

Die oder jede Austrittsöffnung für das Spülwasser kann zweckmäßig einen lichten Austrittsquerschnitt von 1 bis 2 Zoll haben und das Spülwasser unter einem Druck von 3 bis 10 bar in der zu der oder den Austrittsöffnungen führenden Leitung bzw. Leitungen stehen.The or each outlet opening for the flushing water can expediently have a clear outlet cross section of 1 to 2 inches and the flushing water can be under a pressure of 3 to 10 bar in the line or lines leading to the outlet opening or openings.

In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt. Es zeigen:

  • Fig. 1 einen Längsschnitt durch drei Schächte einer Düker-Anordnung, deren Abflußrohr eine Strahlreinigungsvorrichtung gemäß einem Ausführungsbeispiel zugeordnet ist, die ein einziges Absperrventil aufweist,
  • Fig. 2 einen vergrößerten Ausschnitt aus dem Abflußrohr nach Fig. 1, welcher eine vorteilhafte Anordnung der Strahlrohre in näheren Einzelheiten zeigt, wobei jedoch in diese Strahlrohre gesonderte Absperrventile eingesetzt sind,
  • Fig. 3 einen Schnitt durch das Abflußrohr nach Fig. 2, gesehen entlang der Schnittlinie 3-3.
Exemplary embodiments of the invention are shown in the drawing. Show it:
  • 1 shows a longitudinal section through three shafts of a culvert arrangement, the discharge pipe of which is associated with a jet cleaning device according to one exemplary embodiment and which has a single shut-off valve,
  • 2 shows an enlarged section of the drain pipe according to FIG. 1, which shows an advantageous arrangement of the jet pipes in more detail, but separate shut-off valves are used in these jet pipes,
  • Fig. 3 shows a section through the drain pipe of FIG. 2, seen along the section line 3-3.

Die in Fig. 1 dargestellte Düker-Anordnung 9 weist einen Düker-Vorschacht 11, einen Meß- und Drosselschacht 12 und einen Düker-Nachschacht 13 auf. Im Düker-Vorschacht (Düker-Einlaufbauwerk) ist ein nach oben offener Kanal oder Gerinne 8 vorhanden, an den oder das ein das in ihm strömende Abwasser empfangendes Abflußrohr 10 anschließt, das in einen im Nachschacht 13 angeordneten, nach oben offenen Kanal oder Gerinne 8' ausmündet, der bzw. das zu einem weiterführenden Kanalrohr 14' führt. Diese Düker-Anordnung 9 ist an ein Kanalrohr 14 einer Abwasser-Kanalisation angeschlossen und dient dem Ableiten des Abwassers zu einerweiterführenden Kanalisation, die bspw. zu einer Kläranlage, einer sonstigen Regenrückhaltung oder dergl. führen kann.The culvert arrangement 9 shown in FIG. 1 has a culvert forward shaft 11, a measuring and throttle shaft 12 and a culvert downstream shaft 13. In the culvert duct (culvert inlet structure) there is an upwardly open channel or channel 8, to which a drain pipe 10 receiving the waste water flowing therein connects, which is arranged in an upwardly open channel or channel 8 arranged in the downstream shaft 13 flows out, the or that leads to a further sewer pipe 14 '. This culvert arrangement 9 is connected to a sewer pipe 14 of a sewage sewer system and is used to drain the sewage water to a further sewer system, which can lead, for example, to a sewage treatment plant, other rainwater retention or the like.

Das gesamte Abwasser durchströmt die Düker-Anordnung 9 und damit das Abflußrohr 10 in Richtung des Pfeiles A. Das im Vorschacht 11 befindliche Gerinne 8 führt verhältnismäßig steil nach unten und der im Meß- und Drosselschacht 12 und Nachschacht 13 befindliche Bereich 28 des Abflußrohres 10 und das Gerinne 8' führen mit relativ geringer Steigung schräg nach oben. Der minimale Wasserstand in der Düker-Anordnung 9 ist durch die punktierte Linie 15 angedeutet. Bei ihm findet gerade kein Durchfluß mehr statt. Wenn dieser unterste Wasserstand infolge Anstiegs des Wasserstandes im vorgeschalteten Regenbecken oder dergl. überschritten wird, wird das Abflußrohr 10 von Abwasser in Pfeilrichtung Adurchströmt, dessen Fließgeschwindigkeit mittels eines magnetischinduktiven Durchflußmessers 16 gemessen wird, der an der dargestellten Stelle des Abflußrohres 10 den Durchfluß mißt, wo dieses stets voll mit Abwasser gefüllt ist, wobei sich diese Stelle zwischen zwei Drosselschiebern 17, 18 befindet.The entire wastewater flows through the culvert arrangement 9 and thus the drain pipe 10 in the direction of arrow A. The channel 8 located in the forward shaft 11 leads relatively steeply downward and the area 28 of the drain pipe 10 and 13 located in the measuring and throttle shaft 12 and secondary shaft 13 the channel 8 'lead obliquely upwards with a relatively small slope. The minimum water level in the culvert arrangement 9 is indicated by the dotted line 15. There is no flow through him anymore. If this lowest water level is exceeded due to an increase in the water level in the upstream rain basin or the like, the drain pipe 10 is flowed through by waste water in the direction of the arrow A, the flow rate of which is measured by means of a magnetic inductive flow meter 16, which measures the flow at the illustrated point of the drain pipe 10, where this is always completely filled with waste water, this point being located between two throttle valves 17, 18.

Am und nahe am untersten ständig mit Abwasser voll gefüllten Längsbereich 20 des Abflußrohres 10 stromaufwärts des Drosselschiebers 17 und Durchflußmessers 16 münden drei Strahlrohre 21, 22, 23 einer Strahlreinigungsvorrichtung 29 gemäß einem Ausführungsbeispiel der Erfindung in das Abflußrohr 10. Wie besonders deutlich aus Fig. 2 und 3 zu ersehen ist, handelt es sich bei diesen Strahlrohren um gerade, kreiszylindrische starre Rohre, deren die Austrittsöffnungen für Spülwasser bildenden Austrittsmündungen 24, 25, 26 bundig mit der Innenwand der Umfangswandung des Abflußrohres 10 sind, wie man es besonders deutlich für die Mündung 25 in Fig. 2 sieht, welche Mündungen also nicht in den Innenraum des Abflußrohres 10 vorstehen und so keine Strömungshindernisse im Abflußrohr 10 bilden.At and near the bottom of the longitudinal region 20 of the drain pipe 10, which is constantly filled with waste water, upstream of the throttle slide 17 and flow meter 16, three jet pipes 21, 22, 23 of a jet cleaning device 29 according to an embodiment of the invention open into the drain pipe 10. As is particularly clear from FIG. 2 and 3 can be seen, these jet pipes are straight, circular-cylindrical rigid pipes, the outlet openings for flushing water-forming outlet openings 24, 25, 26 are flush with the inner wall of the peripheral wall of the drain pipe 10, as can be seen particularly clearly for the outlet 25 in FIG. 2 sees which mouths do not protrude into the interior of the drain pipe 10 and thus do not form any flow obstacles in the drain pipe 10.

Die Strahlrohre 21-23 sind schräg zur Längsrichtung des Abflußrohres in ihrem Bereich wie dargestellt geneigt so angeordnet, daß die aus ihnen gemäß den Pfeilen B ausströmenden starken Spülwasserstrahlen auf das im Abflußrohr 10 befindliche Abwasser solchen Schub oder Impuls ausuben, der in vektorieller Zerlegung jeweils auch eine in Fließrichtung des Abwassers gerichtete vektorielle Komponente VF aufweist, so daß die starken Spülwasserstrahlen auf das Abwasser Schub in dessen Fließrichtung ausüben und so auch Treibstrahlen für das Abwasser sind, die sein Strömen in der Fließrichtung (Pfeil A) unterstützen.The jet pipes 21-23 are arranged obliquely to the longitudinal direction of the drain pipe in their area as shown so that the strong jets of water flowing out of them according to the arrows B exert such thrust or impulse on the waste water in the drain pipe 10, which in each case also in vectorial decomposition has a vectorial component VF directed in the direction of flow of the wastewater, so that the strong jets of flushing water push the wastewater in its direction of flow and are thus also driving jets for the wastewater which support its flow in the direction of flow (arrow A).

Das Strahlrohr 22 mündet an der tiefsten Stelle in das Abflußrohr 10 ein und die beiden anderen Strahlrohre 21, 23 münden auch in die untere Umfangshälfte des Abflußrohres ein, sind jedoch von der tiefsten Stelle des Abflußrohres aus gesehen um ca. 30 bis 45° in Umfangsrichtung des runden Abflußrohres 10 nach links und rechts wie dargestellt winkelversetzt angeordnet und die Austrittsöffnungen sind auch in Längsrichtung des Abflußrohres 10 wie dargestellt zueinander versetzt, so daß die Austrittsöffnung 24 sich noch im steilen abwärts gerichteten Bereich 27 und die Austrittsöffnung 26 im flachen ansteigenden Bereich 28 des Abflußrohres 10 befindet.The jet pipe 22 opens at the deepest point in the drain pipe 10 and the two other jet pipes 21, 23 also open into the lower circumferential half of the drain pipe, but are seen from the lowest point of the drain pipe by about 30 to 45 ° in the circumferential direction of the round drainpipe 10 to the left and right as shown angularly offset and the outlet openings are also offset in the longitudinal direction of the drainpipe 10 as shown, so that the outlet opening 24 is still in the steep downward region 27 and the outlet opening 26 in the flat rising region 28 of the Drain pipe 10 is located.

Die Neigung der Strahlrichtung B des einzelnen Strahlrohres 21,22,23 zur Längsachse des betreffenden Bereiches des Abflußrohres 10 beträgt in diesem Ausführungsbeispiel ca. 40 bis 50°. Dieser Winkel kann auch größer oder kleiner sein. Die Strahlrichtungen dieser Strahlrohre 21, 22, 23 können auf die Längsachse des Abflußrohres 10 ungefähr zu gerichtet sein oder oft besonders günstig auch im Abstand an dieser Längsachse vorbeiführen Besonders günstig ist es, wenn die aus diesen Strahlrohren 21, 22, 23 ausströmenden Wasserstrahlen im Abflußrohr eine Drallströmung in Richtung auf das stromabwärtige Ende des Abflußrohres zu erzeugen, doch können auch andere Strömungsverläufe vorgesehen sein. Wesentlich ist, daß die Spülwasserstrahlen im Abflußrohr 10 die Abführung von in ihm angesammelten Schlamm und sonstigen Verunreinigungen in Fließrichtung A des Abwassers 10 bewirken. Hierzu genügt es, wenn diese Spülwasserstrahlen die betreffenden Verunreinigungen vom Boden des Abflußrohres aufwirbeln und zum Schweben im sie dann fortschwemmenden Abwasser bringen und durch die Spülwasserstrahlen wird auch bei niedrigen Fließgeschwindigkeiten des Abwassers hierfür ausreichenderAbfluß von Abwasser aus dem Abflußrohr bewirkt. Die Spülwasserstrahlen können auch gröbere Verunreinigungen, wie Äste oderdergl. direkt fortspülen. Die Spülwasserstrahlen können auch die Reinigung des Abflußrohres 10 noch weiter begünstigende starke Turbulenzen erzeugen und auch an der Rohrwandung mehrfach "reflektiert" werden und so auch im Falle der dargestellten Strahlrichtungen zum Boden des Abflußrohres umgelenkt werden. Man kann ggfs. auch mindestens ein Strahlrohr direkt auf den Boden des Abflußrohres richten.In this exemplary embodiment, the inclination of the jet direction B of the individual jet pipe 21, 22, 23 to the longitudinal axis of the relevant area of the drain pipe 10 is approximately 40 to 50 °. This angle can also be larger or smaller. The jet directions of these jet pipes 21, 22, 23 can be directed approximately towards the longitudinal axis of the drain pipe 10 or often pass particularly cheaply at a distance from this longitudinal axis. It is particularly favorable if the water jets flowing out of these jet pipes 21, 22, 23 in the drain pipe generate a swirl flow towards the downstream end of the drain pipe, but other flow patterns can also be provided. It is essential that the flushing water jets in the drain pipe 10 cause the removal of sludge and other impurities accumulated in it in the flow direction A of the waste water 10. For this it is sufficient if these rinsing water jets whirl up the relevant impurities from the bottom of the drain pipe and cause them to float in the wastewater that then sweeps them away, and sufficient rinsing of wastewater from the drain pipe is effected for this purpose even at low flow rates of the wastewater. The rinse water jets can also coarser impurities such as branches or the like. wash away immediately. The rinsing water jets can also generate strong turbulence which further promotes the cleaning of the drain pipe 10 and can also be “reflected” several times on the pipe wall and thus also deflected to the bottom of the drain pipe in the case of the jet directions shown. If necessary, you can also point at least one jet pipe directly to the bottom of the drain pipe.

Um das Abflußrohr 10 zu reinigen, genügen relativ kurze Spülzeiten von bspw. einer oder wenigen Minuten, ggfs. sogar von weniger als einer Minute. Nach jeder Spülzeit kann dann eine mehr oder weniger lange Zeit nicht gespült werden, bspw. eine Stunde oder mehrere Stunden oder auch noch länger. Auch braucht, wie erwähnt, nicht unbedingt auch bei Regenwetter gespült zu werden, da hier die Fließgeschwindigkeit im Abflußrohr 10 meist so groß ist, daß sich keine störenden Schlammmengen und andere Verunreinigungen in ihm ansammeln können In diesem Fall genügt es dann, das Spülen nur während Trockenwetterperioden vorzunehmen.In order to clean the drain pipe 10, relatively short rinsing times of, for example, one or a few minutes, possibly even less than a minute, are sufficient. After each rinsing time, a more or less long period of time cannot be rinsed, for example one hour or several hours or even longer. Also, as mentioned, does not necessarily have to be flushed even in rainy weather, since here the flow speed in the drain pipe 10 is usually so great that no disturbing amounts of sludge and other contaminants can accumulate in it. In this case, it is then sufficient to rinse only during To carry out dry weather periods.

In diesem Ausführungsbeispiel sind die Austrittsöffnungen 24, 25, 26 am niedrigsten und nahe dem niedrigsten Bereich 20 des Abflußrohres 10 angeordnet.In this exemplary embodiment, the outlet openings 24, 25, 26 are arranged at the lowest and near the lowest region 20 of the drain pipe 10.

Um die Durchflußmeßstelle 30 des Abflußrohres 10 besonders gut sauber zu halten, kann auch vorgesehen sein, daß mindestens ein Strahlrohr in geringem Abstand von dieser Durchflußmeßstelle vor oder hinter ihr angeordnet und auf sie zugerichtet ist.In order to keep the flow measuring point 30 of the drain pipe 10 particularly clean, it can also be provided that at least one jet pipe is arranged at a short distance from this flow measuring point in front of or behind it and is directed towards it.

Auch kann mindestens ein Strahlrohr an der oberen Umfangshälfte des Abflußrohres 10 angeordnet sein und dann vorzugsweise seine Strahlrichtung in Fließrichtung des Abwassers schräg nach unten gerichtet sein, wie es als Beispiel für ein Strahlrohr 21' in Fig. 2 strichpunktiert eingezeichnet ist.At least one jet pipe can also be arranged on the upper circumferential half of the drain pipe 10 and then preferably its jet direction can be directed obliquely downward in the flow direction of the waste water, as is shown in broken lines as an example for a jet pipe 21 'in FIG. 2.

Wenn eine besondere intensive Drallströmung durch das Spülwasser bewirkt werden soll, kann auch vorgesehen sein, daß mindestens ein Strahlrohr das Spülwasser so in das Abflußrohr 10 einstrahlt, daß die Einströmgeschwindigkeit des Spülwassers eine wesentliche Geschwindigkeitskomponente aufweist, die tangential zur Innenumfangswandung des Abflußrohres 10 gerichtet ist und eine andere Geschwindigkeitskomponente verläuft entlang einer Mantellinie des Abflußrohres vorzugsweise in Fließrichtung des Abwassers.If a particularly intensive swirl flow is to be brought about by the rinsing water, it can also be provided that at least one jet pipe jets the rinsing water into the drain pipe 10 in such a way that the inflow speed of the rinsing water has an essential speed component which is directed tangentially to the inner peripheral wall of the drain pipe 10 and another speed component runs along a surface line of the drain pipe, preferably in the flow direction of the waste water.

Auch kann es in manchen Fällen vorteilhaft sein, mindestens einen Spülwasserstrahl parallel zum Boden entlang diesem in das Abflußrohr einzustrahlen, wobei er vorzugsweise durch eine Breitschlitzdüse eingeleitet werden kann, so daß ein breiter Bodenbereich mit diesem Spülwasserstrahl beaufschlagt wird.It may also be advantageous in some cases to jet at least one jet of rinse water parallel to the floor along this into the drain pipe, it preferably being able to be introduced through a slot nozzle so that a wide area of the floor is exposed to this jet of rinse water.

In diesem Ausführungsbeispiel nach Fig. 1 sind die Strahlrohre 21, 22, 23 an eine gemeinsame Druckwasser-Zuleitung 31 angeschlossen. In diese Zuleitung ist ein Absperrventil 32 eingesetzt, das durch ein Stellglied 33 geöffnet und geschlossen werden kann. Dieses wird von einer Zeitschaltvorrichtung oder Programmsteuervorrichtung 34 zum Öffnen und Sperren angesteuert. Bspw. kann vorgesehen sein, daß das Absperrventil 32 in Abständen von einer Stunde jeweils eine Minute lang zum Einleiten von Spülwasserstrahlen durch die Strahlrohre 21, 22, 23 in das Abflußrohr 10 geöffnet wird.In this exemplary embodiment according to FIG. 1, the jet pipes 21, 22, 23 are connected to a common pressurized water supply line 31. A shut-off valve 32 is inserted into this feed line and can be opened and closed by an actuator 33. This is controlled by a timer or program control device 34 for opening and locking. E.g. it can be provided that the shut-off valve 32 is opened at intervals of one hour each for one minute to introduce rinsing water jets through the jet pipes 21, 22, 23 into the drain pipe 10.

In die Leitung zum Stellglied 33 ist ein Ein-AusSchalter 35 zwischengeschaltet, der durch ein Stellglied 36 immer dann geöffnet wird, solange das Durchflußmeßgerät 16 fühlt, daß der Durchfluß oberhalb eines vorbestimmten Grenzwertes liegt, oberhalb dem sich im Abflußrohr nicht in störendem Umfange Verunreinigungen, wie Sand, Schlamm oder dergl. absetzen können. Solange dieser Grenzwert des Durchflusses unterschritten ist, ist der Schalter 35 geschlossen und es findet in den vorbestimnten Zeitabständen jeweils selbsttätig kurzzeitiges Spülen des Abflußrohres 10 mittels der Spülwasserstrahlen statt.An on-off switch 35 is interposed in the line to the actuator 33 and is always opened by an actuator 36 as long as the flow measuring device 16 feels that the flow is above a predetermined limit value above which there are no contaminants in the drain pipe, such as sand, mud or the like. As long as this limit of the flow is undershot, the switch 35 is closed and the drain pipe 10 is automatically briefly rinsed by means of the rinse water jets at the predetermined time intervals.

Anstatt des gemeinsamen Ventiles 32 nach Fig. 1 können auch mindestens zwei der Strahlrohre 21, 22, 23 vorzugsweise jedem Strahlrohr 21, 22, 23 je ein eigenes durch ein Stellglied 33a, 33b, 33c zu öffnendes und abzusperrendes Ventil 32a, 32b, 32c, bspw. je ein Magnetventil zugeordnet sein und man kann dann diese Ventile 32a, 32b und 32c relativ zueinander auch zeitlich unterschiedlich öffnen und absperren mittels derZeitschalt- oder Programmsteuereinrichtung 34', die getrennte Ausgänge zum unabhängig voneinander möglichen Ansteuern der Stellglieder 33a, 33b und 33c aufweist. Es können dann diese Strahlrohre auch in zeitlichen Abständen, bspw. in Sequenz, oder in sich überlappenden Zeitabständen oder auf sonstige Weise zu unterschiedlichen Zeiten geöffnet und abgesperrt werden oder gewünschtenfalls auch gemeinsam.Instead of the common valve 32 according to FIG. 1, at least two of the jet pipes 21, 22, 23, preferably each jet pipe 21, 22, 23, can each have their own valve 32a, 32b, 32c, which can be opened and shut off by an actuator 33a, 33b, 33c, For example, one solenoid valve each can be assigned and these valves 32a, 32b and 32c can then also be opened and shut off at different times relative to one another by means of the time switch or program control device 34 ', which has separate outputs for independently actuating the actuators 33a, 33b and 33c . These beam tubes can then also be opened and shut off at different times, for example in sequence, or in overlapping time intervals or in some other way at different times or, if desired, together.

Das Abflußrohr 28 der Düker-Anordnung 9 kann sich ggfs. auch vom Rohr 14 bis zum Rohr 14' erstrecken.The drain pipe 28 of the culvert arrangement 9 can optionally also extend from the pipe 14 to the pipe 14 '.

Es gibt auch Düker-Anordnungen, deren niedrigster Bereich durch ein längeres horizontales Abflußrohrstück gebildet ist, wobei der Durchflußmesser an diesem horizontalen Rohrstück angeordnet sein kann. In diesem Fall ist es besonders zweckmäßig, die Strahlrohre oder mindestens ein Strahlrohrstromaufwärts dieses Durchflußmeßgerätes am oder nahe am stromaufwärtigen Beginn dieses horizontalen Rohrabschnittes anzuordnen.There are also culvert arrangements, the lowest area of which is formed by a longer horizontal drain pipe section, and the flow meter can be arranged on this horizontal pipe section. In this case, it is particularly expedient to arrange the jet pipes or at least one jet pipe upstream of this flow meter at or near the upstream start of this horizontal pipe section.

Claims (10)

1. A process for improving the flow of waste water through a discharge pipe of a siphon arrangement arranged downstream of a sewer pipe, rain tank or the like of a waste-water sewer system in order to carry off waste water from the sewer pipe, rain tank or the like, a flowmeter being associated with the discharge pipe in order to measure the quantity of waste waterflowing through it- /time, the area of the flow measuring point in the discharge pipe being constantly fully filled with water whose flow speed is sensed by the flowmeter for determining the flow, characterized in that rinsing water is intermittently automatically introduced, in at least one jet, within the interior-space area of the discharge pipe in order to wash away impurities which have collected therein, the introduction of the rinsing water into the discharge pipe being started and stopped in a time-programmed manner, and it being optional that
- the rinsing-water jet or at least one rinsing-water jet is/are introduced into the discharge pipe in such a direction that it or they exert a downstream-directed thrusting action onto the waste water located in the discharge pipe and/or
- the rinsing-water jet or at least one rinsing-water jet is introduced into the discharge pipe in such a manner that a swirling stream is produced and/or
- waste-water is used as rinsing water.
2. A process in accordance with Claim 1, characterized in that the rinsing-water jet or at least one rinsing-water jet, preferably all the rinsing-water jets, is/are introduced into the discharge pipe upstream of the flow measuring point, and/or in that the rinsing-water jet or at least one rinsing-water jet, preferably all the rinsing-water jets, is/are introduced into this discharge pipe at the lowest longitudinal-region and/or near the lowest longitudinal-region of the discharge pipe, and/or in that the rinsing-water jet or at least one rinsing-water jet, preferably all the rinsing-water jets, is/are introduced into the lower circumferential half of the discharge pipe, preferably in an upwardly inclined direction or directions, and/or in that at least two rinsing-water jets, preferably all the rinsing-water jets, are introduced into the discharge pipe angularly offset in relation to one another in the circumferential direction of the discharge pipe and/or offset in relation to one another in the longitudinal direction of the discharge pipe.
3. A process in accordance with Claim 1 or 2, characterized in that the rinsing-water jet or at least one rinsing-water jet is/are introduced into a downwards-running section of the discharge pipe, which section is located upstream of the lowest longitudinal-region of the discharge pipe.
4. A process in accordance with any one of the preceding Claims, characterized in that the introduction of the rinsing water into the discharge pipe is repeated periodically in a time programmed manner, and/or in that rinsing-water jets are, preferably without a chronological overlap, introduced into the discharge pipe chronologically staggered in relation to one another and at different places, and/or in that the time-programmed introduction of rinsing water into the discharge pipe only takes place so long as the flow through the discharge pipe measured by the flowmeter is below a predetermined value.
5. A process in accordance with any one of the preceding Claims, characterized in that drinking water, fresh water or ground water is used as rinsing water.
6. A plant for carrying out the process in accordance with one of the preceding Claims and having a siphon arrangement which has a discharge pipe (10) with which there is associated a flow meter (16), the area of the flow-measuring-point in the discharge pipe being constantly fully filled with waste-water, characterized in that a jet cleaning-device (29) is associated with the discharge pipe (10), this jet cleaning-device having at least one rinsing-water outlet-opening (24, 25, 26) serving to introduce rinsing water, in at least one rinsing-water jet, within the area of the discharge pipe which is constantly fully filled with waste water, in that this plant has a programme control device or time switch device (34; 34') for automatically opening and shutting off the supply of rinsing water to the outlet opening(s) (24, 25, 26), it being furthermore optionally foreseen that
- thejetdirection of at feast one rinsing-water outlet-opening (24, 25, 26) is such that by means of the rinsing-water jet which in each case is flowing out of the latter, a downstream-directed thrusting action can be exerted onto the waste water located in the discharge pipe (10), and/or
- thejetdirection of at least one rinsing-water outlet-opening (24, 25, 26) is such that by means of the rinsing-water jet which in each case is flowing out of this rinsing-water outlet-opening (24, 25, 26), a swirling stream can be produced in the discharge pipe (10), and/or
- the jet cleaning-device (29) has a waste-water pump for drawing in waste water and conveying this waste water as rinsing water to the not less than one jet pipe.
7. A plant in accordance with Claim 6, characterized in that the rinsing-waterjet or at least one rinsing-water jet can be introduced into the discharge pipe (10) by means of a jet pipe (21, 22, 23) which is securely arranged on the discharge pipe (10), and/or in that at least one rinsing-water outlet-opening is arranged in the lower half of the interior cross-section of the discharge pipe in question.
8. A plant in accordance with Claim 6 or 7, characterized in that the outlet opening or at least one rinsing-water outlet-opening, preferably all the outlet openings (24, 25, 26), is or are arranged upstream of the flow measuring point (30) in the discharge pipe (10), preferably at and/or near the lowest longitudinal-region (20) of the discharge pipe, and/or in that the rinsing-water outlet opening or at least one rinsing-water outlet opening, preferably all the outlet openings (24, 25, 26), is or are arranged on the wall of the discharge pipe, and/or in that the jet direction of the outlet-opening or of at least one rinsing-water outlet-opening, preferably of all the outlet openings (24, 25, 26), is or are arranged at an incline to the longitudinal direction of the discharge pipe (10), preferably in such a manner that a vectorial component (vF) of the jet direction (B) of at least one rinsing-water jet flowing out of the outlet opening is directed in the flow direction (A) of the waste water.
9. A plant in accordance with any one of Claims 6 to 8, characterized in that separate shutoff valves (32a, 32b, 32c) are associated with the feed lines (21, 22, 23) to at least two outlet rinsing-water outlet-openings (24, 25, 26), preferably at least two shutoff valves (32a, 32b, 32c) being opened and shut off, in a programmed manner, chronologically staggered in relation to one another.
10. A plant in accordance with any one of the preceding Claims, characterized in that at least one jet pipe is arranged downstream of the flow measuring point and its jet direction is preferably turned towards the flow measuring point.
EP87107016A 1986-05-23 1987-05-14 Method and device for modifying the flow in a sewer Expired - Lifetime EP0246562B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3617293 1986-05-23
DE3617293 1986-05-23

Publications (4)

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EP0246562A2 EP0246562A2 (en) 1987-11-25
EP0246562A3 EP0246562A3 (en) 1988-01-20
EP0246562B1 EP0246562B1 (en) 1990-12-27
EP0246562B2 true EP0246562B2 (en) 1994-08-10

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EP87107016A Expired - Lifetime EP0246562B2 (en) 1986-05-23 1987-05-14 Method and device for modifying the flow in a sewer

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DE (2) DE3767026D1 (en)

Families Citing this family (9)

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DE3743703C2 (en) * 1987-12-23 1997-10-23 Vollmar Oskar Gmbh Process for automatic cleaning of a drained sewage pipe
DE4429288C2 (en) * 1994-08-18 1997-09-11 Hans Dipl Ing Geiger Method and device for keeping stream and sewage culverts clean
FR2861762B1 (en) * 2003-11-04 2006-12-15 Ksb Sas METHOD OF CURING A PIPE AND MOTOR PUMP PARTICULARLY ADAPTED THEREFOR
RO123560B1 (en) * 2005-12-29 2013-09-30 Doru Cornel Sava Sewage installation
DE102006041482B3 (en) * 2006-09-02 2008-01-03 Jung Pumpen Gmbh Scouring method for a high-pressure pipeline (HPP) scours the HPP at intervals of time while detecting physical dimensions and proportions of sewage/waste water carried through the HPP
DE202013004552U1 (en) 2013-05-16 2013-06-24 Eberhard Wendt Dükeranlage
CN107847988B (en) * 2015-06-26 2021-06-08 迪泰克塔国际有限公司 Drain pipe cleaning device and method
JP2019518895A (en) * 2016-05-23 2019-07-04 ▲寧▼ 小▲イン▼Ｎｉｎｇ， Ｘｉａｏｙｉｎｇ Flow water accelerator
RU2770881C1 (en) * 2021-10-14 2022-04-25 Федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский государственный архитектурно-строительный университет" Air cushion regulation assembly in sections of the sewer network of the ducer type

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DE362026C (en) * 1922-10-19 Gewerkschaft Hausbach O Sewer pipe with pressurized water flush
DE296738C (en) * 1915-01-05 1917-02-27
FR1563231A (en) * 1968-02-29 1969-04-11
FR2278412A1 (en) * 1974-07-17 1976-02-13 Cama Michel Refuse chute cleaning system for multi-storey building - has water spray at top controlled from basement
SE416981B (en) * 1979-06-11 1981-02-16 Nils Gosta Ragnar Nilsson SET AND DEVICE FOR CLEANING OF DIVERS
DE2944733A1 (en) * 1979-11-06 1981-05-14 Fa. Oskar Vollmar, 7000 Stuttgart Metering system for water from rain basin - uses motor to set throttle controlling flow in outflow pipe

Also Published As

Publication number Publication date
EP0246562B1 (en) 1990-12-27
EP0246562A3 (en) 1988-01-20
DE3716204C2 (en) 1994-03-24
EP0246562A2 (en) 1987-11-25
DE3716204A1 (en) 1987-11-26
DE3767026D1 (en) 1991-02-07

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