EP3020876B1 - Device for cleaning a perforated well pipe - Google Patents

Device for cleaning a perforated well pipe Download PDF

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Publication number
EP3020876B1
EP3020876B1 EP15194626.6A EP15194626A EP3020876B1 EP 3020876 B1 EP3020876 B1 EP 3020876B1 EP 15194626 A EP15194626 A EP 15194626A EP 3020876 B1 EP3020876 B1 EP 3020876B1
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EP
European Patent Office
Prior art keywords
outlet
sealing means
well pipe
wall
engagement
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EP15194626.6A
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German (de)
French (fr)
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EP3020876A1 (en
Inventor
Christoph Bartsch
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Anita Bartsch Pumpen- und Wassertechnik Ek
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Bartsch Pumpen- und Wassertechnik
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Priority to PL15194626T priority Critical patent/PL3020876T3/en
Publication of EP3020876A1 publication Critical patent/EP3020876A1/en
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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
    • E03B3/06—Methods or installations for obtaining or collecting drinking water or tap water from underground
    • E03B3/08—Obtaining and confining water by means of wells
    • E03B3/15—Keeping wells in good condition, e.g. by cleaning, repairing, regenerating; Maintaining or enlarging the capacity of wells or water-bearing layers

Definitions

  • the invention relates to a device for cleaning a perforated well pipe, and preferably also a surrounding the well pipe bed, especially in a deep well according to the preamble of claim 1
  • a device for cleaning a perforated well pipe, and preferably also a surrounding the well pipe bed, especially in a deep well according to the preamble of claim 1
  • Such a device is also referred to as a regenerator and used to the filter slots in the well pipe and the well surrounding gravel bed from iron deposits and / or manganese deposits and / or other deposits to free, so that the water flow is ensured.
  • the device is introduced into the well pipe before it starts its operation.
  • the device is suspended on a hawser, which is unwound during the introduction of the device into the well pipe from a roll on a crane or a rack and preferably consists of a wire rope or a chain, wherein during operation within the well pipe, the device continues is connected to the hawser and is pulled out after completion of the operation with the hawser again from the well pipe.
  • a generic Regenerier Meeting is by the EP-A-0548768 apparently. It is an object of the present invention to provide a device of the type mentioned, with which the cleaning of a perforated well pipe can be accomplished in a simple and effective way.
  • a device for cleaning a perforated well pipe and preferably also a surrounding the well pipe bed, especially in a deep well, with a pump, with a, preferably elongated and / or tubular body, the at least one inlet through which the pump sucks liquid, and has at least a first outlet and a second outlet, the first and second outlets being provided for dispensing the liquid pumped by the pump, comprising at least a first sealant and a second sealant, the first and second sealants at Body are mounted and optionally in sealing engagement with or disengageable from an inner wall of the well pipe and the second sealant below the first sealant spaced therefrom, with a formed between the first and second sealing means and a portion of the outside of the Body limited first compartment, in which the first outlet opens, while the second outlet above the first sealant and thus located above and outside the first compartment, and with an opening and closing device, which is formed in a first operating state, the first outlet keep open and close the second outlet and to close the first outlet in
  • a special feature of the device according to the invention is in particular that it can be switched between a first operating state "circulating and regenerating” and a second operating state “pumping" and thus combines these two functions, so that these two functions are performed with one and the same device.
  • the device preferably comprises at least one third sealing means attached to the body, which is selectively arranged in sealing engagement with or disengageable from the inner wall of the well tube and spaced below the second sealing means, wherein between the second and third sealing means, a second compartment bounded by a portion of the outside of the body is formed, with which the inlet communicates.
  • this embodiment is particularly advantageous to perform the circulation and regeneration only in each case for a limited section within the well pipe in a particularly intensive and thus effective manner.
  • this embodiment has the further advantage that in addition to the first and second sealing means using the third sealant even better locking of the device is made possible within the well pipe.
  • the sealing means are each provided in a body substantially enclosing arrangement in the manner of a sleeve, which results in a particularly effective sealing effect on the one hand and on the other a particularly good locking effect.
  • spacers are mounted on the body, which protrude from the body and at the free end of each a sealing means is arranged.
  • the spacers are preferably designed as a flange-like ring substantially enclosing the body.
  • the spacers should be releasably attached to the body, so that optionally spacers of different dimensions depending on the opening cross-section or diameter of the well pipe can be used.
  • At least one sealing means in sealing engagement with the inner wall of the well pipe can be brought only with a predetermined force, when exceeding the sealing means acting on suction or pressure force, at least partially and / or temporarily, releasing the engagement of the sealant with the inner wall of the well pipe causes.
  • a kind of emergency function can be realized to prevent inadvertent displacement of the device within the well pipe due to high suction or pressure forces.
  • the sealing means expediently have an inflatable body.
  • the actuating element for the first operating state "circulating and regenerating" is moved to its first position and for the second operating state "pumping" in its second position.
  • the actuating element of a, preferably hydraulic or pneumatic or electric, drive means is movable.
  • the first outlet is arranged on at least one outer side of the body
  • the actuating element has at least one arranged on at least one outer side of the body, preferably sleeve-shaped, portion which is formed and arranged so that it is in the first Position of the actuating element is located at a distance from the first outlet and thus releases the first outlet and in the second position of the actuating element covers the first outlet and thus closes.
  • the second outlet is arranged at the top of the body.
  • the actuating element is preferably designed so that it closes in its first position with its upper side the second outlet and is in its second position at a distance from the second outlet.
  • the pump is disposed substantially within the body.
  • a liquid line for introducing liquid, in particular cleaning liquid is provided in a region between the outside of the body and the inner wall of the well pipe, wherein these Liquid line preferably ends in a region adjacent to the third sealant.
  • the body has substantially the shape of an elongate tube.
  • a control device which is designed to open the first outlet in the first operating state, close the second outlet and bring the first and second sealing means into sealing engagement with the inner wall of the well pipe and in the second operating state the first Close outlet to open the second outlet and bring the first sealant into engagement with the inner wall of the well pipe and the second sealant disengaged from the inner wall of the well pipe.
  • control device is designed to bring the third sealing means into engagement with the inner wall of the well pipe both in the first operating state and in the second operating state.
  • control device may further be configured to alternatively bring the third sealing means out of engagement with the inner wall of the well pipe in the first operating state in order to act in this way the circulation and regeneration operation to the bottom or sump of the well pipe to let.
  • control device is preferably designed to put the pump out of operation in the event of a change between the first operating state and the second operating state, wherein in particular the control device is designed to put the pump out of operation before leaving the one operating state and only after full achievement the other operating state again to put into operation.
  • control means comprises a switch, upon actuation of which the sealing means are brought into sealing engagement with the inner wall of the pipe only with the aforesaid predetermined force.
  • a switch acts as a kind of emergency switch operated by the operator when the device within the well pipe is in danger of being subjected to excessive suction or pressure forces and thereby unintentionally moving within the well pipe.
  • the regenerator shown in the figures comprises a pump 4 and a body 6, which has substantially the shape of an elongated tube and the lower part of the pump 4 receives or forms.
  • the said lower part of the body 6 is provided in the illustrated embodiment with a so-called.
  • the pump 4 is equipped with a submersible motor, not shown, which drives a pump mechanism, also not shown.
  • the body 6 is formed as a hollow body and thus contains a cavity into which the pump 4 pumps the sucked through the inlet 8 liquid.
  • the housing of the body 6 is executed in the illustrated embodiment as so-called. Stage housing.
  • the body 6 has a first outlet 10, through which, in the opened state, the liquid pumped by the pump 4 into the cavity of the body can escape. Due to the depicted rectangular shape, the first outlet 10 may also be referred to as a window, wherein a plurality of windows distributed over the circumference may be provided, which together form the first outlet 10.
  • the body 6 is provided with a second outlet 12, which is formed in the illustrated embodiment at the upper end of the body 6 and preferably designed as a pressure connection to which a pressure-resistant hose is connectable.
  • the aforementioned cavity formed inside the body 6 extends from the pump 4 past the first outlet 10 to the second outlet 12 so that the liquid delivered by the pump 4 through the inlet 8 into the cavity of the body 6 is also selectively displaceable second outlet 12 can be discharged.
  • a first sealing means 14 is provided on the body 6 between the first outlet 10 and the second outlet 12, a second sealing means 16 between the inlet 8 and the first outlet 10 and a third sealing means 20 in the region of the inlet 8 arranged.
  • the sealing means 14, 16, 20 are each arranged in the manner of a cuff enclosing the body 6 and each have an inflatable, annular sealing pad, not shown in detail in the figures, which in the inflated state is in substantially fixed contact with the inner wall 2a of FIG Well pipe 2 ( Fig. 2 ) and thus is in sealing engagement with this and is in the relaxed state out of engagement with the inner wall 2a of the well pipe 2, thus detached from this and is open and at a distance therefrom.
  • annular spacer for the sealing means 14, 16, 20, an annular spacer, not shown in detail in the figures, can be provided, which is attached to the body 6 surrounding it and at the free end of which a sealing means is arranged.
  • spacers are available with different radial extent, whereby an adaptation to well pipes with different widths or different diameters is possible.
  • pump mechanism to provide an individual inflation and Loosening of the respective sealant is allowed independently of the other sealants.
  • a first compartment or chamber 18 is formed which extends inwardly from a portion of the outer side 6a of the body 6 and outwardly from the inner wall 2a of the well pipe 2 (FIG. Fig. 2 ) is limited. Since the first outlet 10 lies between the first and second sealing means 14, 16, it thus flows into the first chamber 18. Below the first chamber 18, a second compartment or a second compartment 22 is formed between the second and third sealing means 16, 20 which is also bounded inwardly by the outer side 6a of the body 6 and outwardly by the inner wall 2a of the well pipe 2. Since the inlet 8 for the pump 4 is formed at the level of the third sealant 20, the inlet 8 communicates with the second chamber 22.
  • an actuating element 24 is provided, which between an in Fig. 1a shown first position and one in Fig. 1b shown second position in the longitudinal direction of the body 6 is movable.
  • a, preferably hydraulic or pneumatic or electric, drive means 26 is provided, which is arranged in the illustrated embodiment within the actuating element 24 and on the one hand acts on the actuating element 24 and on the other hand in a manner not shown on the body 6 is supported.
  • the drive means 26 is formed telescopically for the movement of the actuating element 24 and is located in the first position of the actuating element 24 according to Fig. 1a in the extended state and in the second position of the actuating element 24 according to FIG Fig.
  • the actuating element 24 is provided at its lower end with a sleeve-shaped portion 24a which surrounds the outer side 6a of the body 6 and is designed and arranged such that, in the first position of the actuating element 24a according to FIG Fig. 1a is located above the first outlet 10 and thus the first outlet 10 releases and in the second position of the actuating element 24 according to Fig. 1b covers the first outlet 10 and thus closes.
  • the actuator 24 has a closed upper end 24b with which it closes the upper second outlet 12 in its first position, such as Fig. 1a can be seen, and is in its second position at a distance from the second outlet 12, and this opens by how Fig. 1b can be seen.
  • a so-called hose package 28 indicated that on the one hand in the figures not shown in detail compressed air lines for supplying the sealing means 14, 16, 20 with compressed air and on the other hand also in the figures not shown in detail fluid conduit for introducing liquid, in particular Cleaning liquid, in a region between the outer side 6a of the body 6 and the inner wall 2a of the well pipe 2 (FIG. Fig. 2 ), wherein in the illustrated embodiment, the liquid line terminates in a region adjacent to the inlet 8 and the third sealant 20.
  • the hose assembly 28 also contains a sampling line also not shown in the figures, which may be formed as the previously mentioned liquid line as a hose or pipe and serves for testing purposes from the well pipe 2 liquid to give, in addition to the cleaning liquid well water and impurities contains; In particular, the addition of cleaning fluid is increased or decreased depending on the test result.
  • a sampling line also not shown in the figures, which may be formed as the previously mentioned liquid line as a hose or pipe and serves for testing purposes from the well pipe 2 liquid to give, in addition to the cleaning liquid well water and impurities contains; In particular, the addition of cleaning fluid is increased or decreased depending on the test result.
  • a control device which controls the sealing means 14, 16, 20 and the actuator 24 so that in the first operating state "circulating and regenerating" the actuator 24 in its first position according to Fig. 1a is moved to open the first outlet 10 and to close the second outlet 12, and All three sealing means 14, 16, 20 are brought by application of compressed air into engagement with the inner wall 2a of the well pipe 2 and in the second operating state "pumping" the actuator 24 in its second position according to Fig. 1b is moved to close the first outlet 10 and open the second outlet 12, and the first sealing means 14 in engagement with the inner wall 2a of the well pipe 2 and the second sealing means 16 is disengaged from the inner wall 2a of the well pipe 2 and thus of this is solved.
  • the regenerating device shown in the figures is suspended with the upper end of its housing adjacent to the second outlet 12 on a hawser, not shown in the figures, during the introduction of the Regenerier mars in the well pipe 2 from a roll on a crane, not shown, or corresponding frame is unwound and preferably consists of a wire rope or a chain.
  • a regeneration liquid is first passed through the hose assembly 28 in the inlet 8. From the inlet 8, the regeneration liquid is pumped by means of the pump 4 into the interior of the body 6 and from there to the top, which is in Fig. 2a indicated by the arrow 30. This liquid then exits the open first outlet 10 in the region of the upper chamber 18 and, due to the pressure of the pump 4, passes through the perforated inner wall 2a of the well pipe 2 into the area surrounding the well pipe 2, which is usually a gravel bed , Subsequently, the liquid, whose course in Fig.
  • the middle second sealant 16 is disengaged from the inner wall 2a of the well pipe 2 and thus released and opened therefrom, while the actuator 24 is moved to its second position to close the first outlet 10 and the second outlet 12 to open.
  • the regeneration liquid located in the vicinity of the well pipe 2 can be pumped out of an area which is located at the level of the two chambers 18, 22 and whose vertical height corresponds to the sum of the vertical heights of the two chambers 18, 22.
  • the pump 4 is preferably controlled by the controller so that it is already set before leaving the one operating state out of service and only after complete reaching the other operating state is put back into operation.
  • a switch is connected to the control device, the actuation of which causes the force or the pressure with which the engagement of a sealing means 14, 16 or 20 with the inner wall 2a of the well pipe 2 to be effected to be predetermined Value does not exceed or in the event that already applied to a higher force or a higher pressure is reduced to the predetermined value.
  • This predetermined value is to be such that when it exceeds a suction or pressure force acting on the sealing means 14, 16, 20, caused by the pumping of the cleaning liquid, a, at least partial and / or temporary, release of the sealant 14, 16, 20th caused by the inner wall 2a of the well pipe 2.
  • such a switch acts as a kind of emergency switch, which is operated by the operator when the regenerator within the well pipe 2 runs the risk that it is subjected to excessive suction or pressure forces from the liquid and thereby unintentionally within the well pipe. 2 sets in motion.
  • all the sealing means 14, 16, 20 should be controlled in accordance with the operation of such a switch at the same time.
  • the regenerating device still hangs on the aforementioned hawser, which after completion of each method described above by the said corresponding measure off or wound. After completion of the entire operation, the regenerator is then completely pulled out of the well pipe 2 using the hawser again.
  • actuators of the Regenerier marers can be optionally pneumatically depending on the design and / or hydraulically and / or electrically and / or electromagnetically and / or electronically operate and control.
  • the mentioned control device is designed for fully automatic operation.
  • a programmable logic controller can be used, which can be used both in manual mode and in automatic mode.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Pipeline Systems (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Reinigen eines perforierten Brunnenrohres, und vorzugsweise auch einer das Brunnenrohr umgebenden Schüttung, insbesondere in einem Tiefbrunnen gemäss dem Oberbegriff von Anspruch 1 Eine solche Vorrichtung wird auch als Regeneriergerät bezeichnet und dazu verwendet, die Filterschlitze im Brunnenrohr und das den Brunnen umgebende Kiesbett von Eisenablagerungen und/oder Manganablagerungen und/oder sonstigen Ablagerungen zu befreien, sodass der Wasserzufluss gewährleistet bleibt. Hierzu wird die Vorrichtung in das Brunnenrohr eingebracht, bevor sie ihren Betrieb aufnimmt. Gewöhnlich wird dabei die Vorrichtung an einer Trosse aufgehängt, die während des Einbringens der Vorrichtung in das Brunnenrohr von einer Rolle an einem Kran oder einem Gestell abgewickelt wird und bevorzugt aus einem Drahtseil oder einer Kette besteht, wobei während des Betriebes innerhalb des Brunnenrohres die Vorrichtung weiterhin mit der Trosse verbunden ist und nach Beendigung des Betriebes mithilfe der Trosse wieder aus dem Brunnenrohr herausgezogen wird. Ein gattungsgemässes Regeneriergerät wird durch die EP-A-0548768 offenbar. Es ist Aufgabe der vorliegenden Erfindung, eine Vorrichtung der eingangs genannten Art vorzuschlagen, mit der sich die Reinigung eines perforierten Brunnenrohres in einfacher und zugleich effektiver Weise bewerkstelligen lässt. Gelöst wird diese Aufgabe mit einer Vorrichtung zum Reinigen eines perforierten Brunnenrohres, und vorzugsweise auch einer das Brunnenrohr umgebenden Schüttung, insbesondere in einem Tiefbrunnen, mit einer Pumpe, mit einem, vorzugsweise länglichen und/oder rohrförmigen, Körper, der mindestens einen Einlass, durch den die Pumpe Flüssigkeit ansaugt, sowie mindestens einen ersten Auslass und einen zweiten Auslass aufweist, wobei die ersten und zweiten Auslässe zur Ausgabe der von der Pumpe gepumpten Flüssigkeit vorgesehen sind, mit mindestens einem ersten Dichtmittel und einem zweiten Dichtmittel, wobei die ersten und zweiten Dichtmittel am Körper angebracht und wahlweise in dichtenden Eingriff mit oder außer Eingriff von einer Innenwandung des Brunnenrohres bringbar sind und das zweite Dichtmittel unterhalb des ersten Dichtmittels von diesem beabstandet angeordnet ist, mit einem zwischen den ersten und zweiten Dichtmitteln gebildeten und von einem Abschnitt der Außenseite des Körpers begrenzten ersten Abteil, in den der erste Auslass mündet, während der zweite Auslass oberhalb des ersten Dichtmittels und somit oberhalb und außerhalb des ersten Abteils angeordnet ist, und mit einer Öffnungs- und Schließeinrichtung, die ausgebildet ist, in einem ersten Betriebszustand den ersten Auslass offen zu halten und den zweiten Auslass zu verschließen und in einem zweiten Betriebszustand den ersten Auslass zu verschließen und den zweiten Auslass offen zu halten.The invention relates to a device for cleaning a perforated well pipe, and preferably also a surrounding the well pipe bed, especially in a deep well according to the preamble of claim 1 Such a device is also referred to as a regenerator and used to the filter slots in the well pipe and the well surrounding gravel bed from iron deposits and / or manganese deposits and / or other deposits to free, so that the water flow is ensured. For this purpose, the device is introduced into the well pipe before it starts its operation. Usually, the device is suspended on a hawser, which is unwound during the introduction of the device into the well pipe from a roll on a crane or a rack and preferably consists of a wire rope or a chain, wherein during operation within the well pipe, the device continues is connected to the hawser and is pulled out after completion of the operation with the hawser again from the well pipe. A generic Regeneriergerät is by the EP-A-0548768 apparently. It is an object of the present invention to provide a device of the type mentioned, with which the cleaning of a perforated well pipe can be accomplished in a simple and effective way. This object is achieved with a device for cleaning a perforated well pipe, and preferably also a surrounding the well pipe bed, especially in a deep well, with a pump, with a, preferably elongated and / or tubular body, the at least one inlet through which the pump sucks liquid, and has at least a first outlet and a second outlet, the first and second outlets being provided for dispensing the liquid pumped by the pump, comprising at least a first sealant and a second sealant, the first and second sealants at Body are mounted and optionally in sealing engagement with or disengageable from an inner wall of the well pipe and the second sealant below the first sealant spaced therefrom, with a formed between the first and second sealing means and a portion of the outside of the Body limited first compartment, in which the first outlet opens, while the second outlet above the first sealant and thus located above and outside the first compartment, and with an opening and closing device, which is formed in a first operating state, the first outlet keep open and close the second outlet and to close the first outlet in a second operating state and to keep the second outlet open.

Eine Besonderheit der erfindungsgemäßen Vorrichtung besteht insbesondere darin, dass sie zwischen einem ersten Betriebszustand "Umwälzen und Regenieren" und einem zweiten Betriebszustand "Abpumpen" umschaltbar ist und somit diese beiden Funktionen in sich vereint, sodass diese beiden Funktionen mit einer und derselben Vorrichtung durchgeführt werden.A special feature of the device according to the invention is in particular that it can be switched between a first operating state "circulating and regenerating" and a second operating state "pumping" and thus combines these two functions, so that these two functions are performed with one and the same device.

Bevorzugte Ausführungen und Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen angegeben.Preferred embodiments and further developments of the invention are specified in the dependent claims.

So weist bevorzugt die Vorrichtung mindestens ein am Körper angebrachtes drittes Dichtmittel auf, das wahlweise in dichtenden Eingriff mit oder außer Eingriff von der Innenwandung des Brunnenrohres bringbar und unterhalb des zweiten Dichtmittels von diesen beabstandet angeordnet ist, wobei zwischen den zweiten und dritten Dichtmitteln ein von einem Abschnitt der Außenseite des Körpers begrenztes zweites Abteil gebildet wird, mit dem der Einlass kommuniziert. Sofern der Umwälz- und Regenerierbetrieb nicht bis zum Boden oder Sumpf des Brunnenrohres wirken soll, ist diese Ausführung besonders vorteilhaft, um den Umwälz- und Regenerierbetrieb nur jeweils für einen begrenzten Abschnitt innerhalb des Brunnenrohres in besonders intensiver und somit effektiver Weise durchzuführen. Außerdem hat diese Ausführung den weiteren Vorteil, dass zusätzlich zu den ersten und zweiten Dichtmitteln mithilfe des dritten Dichtmittels eine noch bessere Arretierung der Vorrichtung innerhalb des Brunnenrohres ermöglicht wird.Thus, the device preferably comprises at least one third sealing means attached to the body, which is selectively arranged in sealing engagement with or disengageable from the inner wall of the well tube and spaced below the second sealing means, wherein between the second and third sealing means, a second compartment bounded by a portion of the outside of the body is formed, with which the inlet communicates. If the circulation and regeneration operation should not act to the bottom or bottom of the well pipe, this embodiment is particularly advantageous to perform the circulation and regeneration only in each case for a limited section within the well pipe in a particularly intensive and thus effective manner. In addition, this embodiment has the further advantage that in addition to the first and second sealing means using the third sealant even better locking of the device is made possible within the well pipe.

Vorzugsweise sind die Dichtmittel jeweils in einer den Körper im Wesentlichen umschließenden Anordnung nach Art einer Manschette vorgesehen, wodurch sich zum einen eine besonders effektive Dichtwirkung und zum anderen eine besonders gute Arretierwirkung ergibt.Preferably, the sealing means are each provided in a body substantially enclosing arrangement in the manner of a sleeve, which results in a particularly effective sealing effect on the one hand and on the other a particularly good locking effect.

Vorzugsweise sind am Körper Abstandshalter angebracht, die vom Körper vorspringen und an dessen freiem Ende jeweils ein Dichtmittel angeordnet ist. Bevorzugt sind die Abstandshalter als den Körper im Wesentlichen umschließender flanschartiger Ring ausgebildet. Des Weiteren sollten die Abstandshalter am Körper lösbar angebracht sein, sodass wahlweise Abstandshalter unterschiedlicher Ausdehnung in Abhängigkeit vom Öffnungsquerschnitt bzw. Durchmesser des Brunnenrohres verwendbar sind.Preferably, spacers are mounted on the body, which protrude from the body and at the free end of each a sealing means is arranged. The spacers are preferably designed as a flange-like ring substantially enclosing the body. Furthermore, the spacers should be releasably attached to the body, so that optionally spacers of different dimensions depending on the opening cross-section or diameter of the well pipe can be used.

Bei einer weiteren bevorzugten Ausführung ist mindestens ein Dichtmittel in dichtenden Eingriff mit der Innenwandung des Brunnenrohres nur mit einer vorbestimmten Kraft bringbar, bei deren Überschreiten eine das Dichtmittel beaufschlagende Saug- oder Druckkraft ein, zumindest teilweises und/oder temporäres, Lösen des Eingriffes des Dichtmittels mit der Innenwandung des Brunnenrohres bewirkt. Mit dieser Ausführung lässt sich eine Art Notfallfunktion realisieren, um ein unbeabsichtigtes Verschieben der Vorrichtung innerhalb des Brunnenrohres aufgrund zu hoher Saug- oder Druckkräfte zu verhindern.In a further preferred embodiment, at least one sealing means in sealing engagement with the inner wall of the well pipe can be brought only with a predetermined force, when exceeding the sealing means acting on suction or pressure force, at least partially and / or temporarily, releasing the engagement of the sealant with the inner wall of the well pipe causes. With this embodiment, a kind of emergency function can be realized to prevent inadvertent displacement of the device within the well pipe due to high suction or pressure forces.

Zweckmäßigerweise weisen die Dichtmittel einen aufblasbaren Körper auf.The sealing means expediently have an inflatable body.

Bei einer weiteren bevorzugten Ausführung weist die Öffnungs- und Schließeinrichtung ein innerhalb des Körpers zwischen einer ersten Stellung und einer zweiten Stellung beweglich angeordnetes Betätigungselement auf und ist die Anordnung der ersten und zweiten Auslässe zueinander so getroffen und das Betätigungselement so ausgebildet, dass das Betätigungselement in der ersten Stellung den ersten Auslass offen hält und den zweiten Auslass verschließt und in einer zweiten Stellung den ersten Auslass verschließt und den zweiten Auslass offen hält. Dabei wird das Betätigungselement für den ersten Betriebszustand "Umwälzen und Regenerieren" in seine erste Stellung und für den zweiten Betriebszustand "Abpumpen" in seine zweite Stellung verbracht. Zweckmäßigerweise ist das Betätigungselement von einer, vorzugsweise hydraulischen oder pneumatischen oder elektrischen, Antriebseinrichtung bewegbar.In a further preferred embodiment, the opening and closing means on a movably disposed within the body between a first position and a second position actuating element and the arrangement of the first and second outlets to each other made so and the actuating element is formed so that the actuating element in the first position keeps the first outlet open and closes the second outlet and in a second position closes the first outlet and keeps the second outlet open. In this case, the actuating element for the first operating state "circulating and regenerating" is moved to its first position and for the second operating state "pumping" in its second position. Conveniently, the actuating element of a, preferably hydraulic or pneumatic or electric, drive means is movable.

Bei einer weiteren bevorzugten Ausführung ist der erste Auslass an mindestens einer Außenseite des Körpers angeordnet, weist das Betätigungselement mindestens einen an mindestens einer Außenseite des Körpers angeordneten, bevorzugt hülsenförmig ausgebildeten, Abschnitt auf, der so ausgebildet und angeordnet ist, dass er sich in der ersten Stellung des Betätigungselementes in einem Abstand vom ersten Auslass befindet und somit den ersten Auslass freigibt und in der zweiten Stellung des Betätigungselementes den ersten Auslass bedeckt und somit verschließt.In a further preferred embodiment, the first outlet is arranged on at least one outer side of the body, the actuating element has at least one arranged on at least one outer side of the body, preferably sleeve-shaped, portion which is formed and arranged so that it is in the first Position of the actuating element is located at a distance from the first outlet and thus releases the first outlet and in the second position of the actuating element covers the first outlet and thus closes.

Bevorzugt ist der zweite Auslass an der Oberseite des Körpers angeordnet.Preferably, the second outlet is arranged at the top of the body.

Des Weiteren ist das Betätigungselement bevorzugt so ausgebildet, dass es in seiner ersten Stellung mit seiner Oberseite den zweiten Auslass verschließt und sich in seiner zweiten Stellung in einem Abstand vom zweiten Auslass befindet.Furthermore, the actuating element is preferably designed so that it closes in its first position with its upper side the second outlet and is in its second position at a distance from the second outlet.

Vorzugsweise ist die Pumpe im Wesentlichen innerhalb des Körpers angeordnet.Preferably, the pump is disposed substantially within the body.

Zweckmäßigerweise ist eine Flüssigkeitsleitung zum Einbringen von Flüssigkeit, insbesondere Reinigungsflüssigkeit, in einen Bereich zwischen Außenseite des Körpers und Innenwandung des Brunnenrohres vorgesehen, wobei diese Flüssigkeitsleitung bevorzugt in einem Bereich benachbart zum dritten Dichtmittel endet.Appropriately, a liquid line for introducing liquid, in particular cleaning liquid, is provided in a region between the outside of the body and the inner wall of the well pipe, wherein these Liquid line preferably ends in a region adjacent to the third sealant.

Bevorzugt weist der Körper im Wesentlichen die Form eines länglichen Rohres auf.Preferably, the body has substantially the shape of an elongate tube.

Bei einer weiteren bevorzugten Ausführung ist eine Steuerungseinrichtung vorgesehen, die ausgebildet ist, im ersten Betriebszustand den ersten Auslass zu öffnen, den zweiten Auslass zu verschließen und die ersten und zweiten Dichtmittel in dichtenden Eingriff mit der Innenwandung des Brunnenrohres zu bringen und im zweiten Betriebszustand den ersten Auslass zu verschließen, den zweiten Auslass zu öffnen und das erste Dichtmittel in Eingriff mit der Innenwandung des Brunnenrohres und das zweite Dichtmittel außer Eingriff von der Innenwandung des Brunnenrohres zu bringen.In a further preferred embodiment, a control device is provided, which is designed to open the first outlet in the first operating state, close the second outlet and bring the first and second sealing means into sealing engagement with the inner wall of the well pipe and in the second operating state the first Close outlet to open the second outlet and bring the first sealant into engagement with the inner wall of the well pipe and the second sealant disengaged from the inner wall of the well pipe.

Vorzugsweise ist des Weiteren die Steuerungseinrichtung so ausgebildet, sowohl im ersten Betriebszustand als auch im zweiten Betriebszustand das dritte Dichtmittel in Eingriff mit der Innenwandung des Brunnenrohres zu bringen. Bei einer Modifikation dieser Weiterbildung kann die Steuerungseinrichtung des Weiteren so ausgebildet sein, im ersten Betriebszustand wahlweise alternativ das dritte Dichtmittel außer Eingriff von der Innenwandung des Brunnenrohres zu bringen, um auf diese Weise den Umwälz- und Regenerierbetrieb bis zum Boden oder Sumpf des Brunnenrohres wirken zu lassen.Preferably, furthermore, the control device is designed to bring the third sealing means into engagement with the inner wall of the well pipe both in the first operating state and in the second operating state. In a modification of this development, the control device may further be configured to alternatively bring the third sealing means out of engagement with the inner wall of the well pipe in the first operating state in order to act in this way the circulation and regeneration operation to the bottom or sump of the well pipe to let.

Des Weiteren ist bevorzugt die Steuerungseinrichtung ausgebildet, bei einem Wechsel zwischen dem ersten Betriebszustand und dem zweiten Betriebszustand die Pumpe außer Betrieb zu setzen, wobei insbesondere die Steuerungseinrichtung ausgebildet ist, die Pumpe bereits vor Verlassen des einen Betriebszustandes außer Betrieb zu setzen und erst nach vollständigem Erreichen des anderen Betriebszustandes wieder in Betrieb zu setzen. Auf diese Weise werden besonders effektiv eventuelle Fehlfunktionen vermieden und reibungslose Übergänge zwischen den verschiedenen Betriebszuständen gewährleistet. Bevorzugt weist die Steuerungseinrichtung einen Schalter auf, bei dessen Betätigung die Dichtmittel in dichtenden Eingriff mit der Innenwandung des Rohres nur mit der zuvor erwähnten vorbestimmten Kraft gebracht werden. Ein solcher Schalter wirkt als eine Art Notfallschalter, der vom Bediener betätigt wird, wenn die Vorrichtung innerhalb des Brunnenrohres Gefahr läuft, dass sie mit zu hohen Saug- oder Druckkräften beaufschlagt wird und sich dadurch in unbeabsichtigter Weise innerhalb des Brunnenrohres in Bewegung setzt.Furthermore, the control device is preferably designed to put the pump out of operation in the event of a change between the first operating state and the second operating state, wherein in particular the control device is designed to put the pump out of operation before leaving the one operating state and only after full achievement the other operating state again to put into operation. In this way, possible malfunctions are avoided particularly effectively and smooth transitions between the different operating states are ensured. Preferably, the control means comprises a switch, upon actuation of which the sealing means are brought into sealing engagement with the inner wall of the pipe only with the aforesaid predetermined force. Such a switch acts as a kind of emergency switch operated by the operator when the device within the well pipe is in danger of being subjected to excessive suction or pressure forces and thereby unintentionally moving within the well pipe.

Nachfolgend wird ein bevorzugtes Ausführungsbeispiel der Erfindung anhand der beiliegenden Zeichnungen näher erläutert. Es zeigen:

Fig. 1
schematisch einen Längsschnitt durch ein Regeneriergerät gemäß einem bevorzugten Ausführungsbeispiel der Erfindung in einem ersten Betriebszustand "Umwälzen und Regenerieren" (a) und in einem zweiten Betriebszustand "Abpumpen" (b); und
Fig. 2
schematisch einen Längsschnitt durch einen Brunnenrohrabschnitt und das darin eingesetzte Regeneriergerät von Fig. 1 mit Darstellung der Flussverläufe im ersten Betriebszustand "Umwälzen und Regenerieren" (a) und im zweiten Betriebszustand "Abpumpen" (b).
Hereinafter, a preferred embodiment of the invention will be explained in more detail with reference to the accompanying drawings. Show it:
Fig. 1
schematically a longitudinal section through a regenerator according to a preferred embodiment of the invention in a first operating state "circulating and regenerating" (a) and in a second operating state "pumping"(b); and
Fig. 2
schematically a longitudinal section through a well pipe section and the regenerator used therein Fig. 1 with representation of the flow curves in the first operating state "circulation and regeneration" (a) and in the second operating state "drainage" (b).

Das in den Figuren dargestellte Regeneriergerät gemäß einem bevorzugten Ausführungsbeispiel weist eine Pumpe 4 und einen Körper 6 auf, der im Wesentlichen die Form eines länglichen Rohres hat und dessen unterer Teil die Pumpe 4 aufnimmt oder bildet. Der besagte untere Teil des Körpers 6 ist im dargestellten Ausführungsbeispiel mit einem sog. Sauggehäuse 7 versehen, das einen Einlass 8 enthält, durch den die Pumpe 4 Flüssigkeit von außen ansaugt. Hierzu ist die Pumpe 4 mit einem nicht dargestellten Unterwassermotor ausgerüstet, der einen ebenfalls nicht dargestellten Pumpenmechanismus antreibt. Der Körper 6 ist als Hohlkörper ausgebildet und enthält somit einen Hohlraum, in den die Pumpe 4 die durch den Einlass 8 angesaugte Flüssigkeit pumpt. Das Gehäuse des Körpers 6 ist im dargestellten Ausführungsbeispiel als sog. Stufengehäuse ausgeführt.The regenerator shown in the figures according to a preferred embodiment comprises a pump 4 and a body 6, which has substantially the shape of an elongated tube and the lower part of the pump 4 receives or forms. The said lower part of the body 6 is provided in the illustrated embodiment with a so-called. Suction housing 7, which contains an inlet 8 through which the pump 4 sucks liquid from the outside. For this purpose, the pump 4 is equipped with a submersible motor, not shown, which drives a pump mechanism, also not shown. The body 6 is formed as a hollow body and thus contains a cavity into which the pump 4 pumps the sucked through the inlet 8 liquid. The housing of the body 6 is executed in the illustrated embodiment as so-called. Stage housing.

Oberhalb der Pumpe 4 und des Einlasses 8 weist der Körper 6 einen ersten Auslass 10 auf, durch den im geöffneten Zustand die von der Pumpe 4 in den Hohlraum des Körpers gepumpte Flüssigkeit austreten kann. Aufgrund der abgebildeten Rechteckform kann der erste Auslass 10 auch als Fenster bezeichnet werden, wobei über den Umfang verteilt mehrere Fenster vorgesehen sein können, die gemeinsam den ersten Auslass 10 bilden. Oberhalb des ersten Auslasses 10 ist der Körper 6 mit einem zweiten Auslass 12 versehen, der im dargestellten Ausführungsbeispiel am oberen Ende des Körpers 6 ausgebildet und bevorzugt als Druckanschluss ausgeführt ist, an dem ein druckfester Schlauch anschließbar ist. Der zuvor angesprochene, im Inneren des Körpers 6 ausgebildete Hohlraum erstreckt sich von der Pumpe 4 am ersten Auslass 10 vorbei bis zum zweiten Auslass 12, sodass die von der Pumpe 4 durch den Einlass 8 in den Hohlraum des Körpers 6 geförderte Flüssigkeit wahlweise auch durch den zweiten Auslass 12 abgegeben werden kann.Above the pump 4 and the inlet 8, the body 6 has a first outlet 10, through which, in the opened state, the liquid pumped by the pump 4 into the cavity of the body can escape. Due to the depicted rectangular shape, the first outlet 10 may also be referred to as a window, wherein a plurality of windows distributed over the circumference may be provided, which together form the first outlet 10. Above the first outlet 10, the body 6 is provided with a second outlet 12, which is formed in the illustrated embodiment at the upper end of the body 6 and preferably designed as a pressure connection to which a pressure-resistant hose is connectable. The aforementioned cavity formed inside the body 6 extends from the pump 4 past the first outlet 10 to the second outlet 12 so that the liquid delivered by the pump 4 through the inlet 8 into the cavity of the body 6 is also selectively displaceable second outlet 12 can be discharged.

Wie die Figuren des Weiteren erkennen lassen, ist am Körper 6 zwischen dem ersten Auslass 10 und dem zweiten Auslass 12 ein erstes Dichtmittel 14, zwischen dem Einlass 8 und dem ersten Auslass 10 ein zweites Dichtmittel 16 und im Bereich des Einlasses 8 ein drittes Dichtmittel 20 angeordnet. Die Dichtmittel 14, 16, 20 sind jeweils nach Art einer den Körper 6 umschließenden Manschette angeordnet und weisen jeweils ein in den Figuren im Einzelnen nicht dargestelltes, aufblasbares, ringförmiges Dichtkissen auf, das im aufgeblasenen Zustand in im Wesentlichen fester Anlage an der Innenwandung 2a des Brunnenrohres 2 (Fig. 2) anliegt und sich somit in dichtenden Eingriff mit dieser befindet und sich im entspannten Zustand außer Eingriff mit der Innenwandung 2a des Brunnenrohres 2 befindet, somit von dieser gelöst und geöffnet ist und in einem Abstand von dieser liegt. Bevorzugt kann für die Dichtmittel 14, 16, 20 ein in den Figuren im Einzelnen nicht erkennbar dargestellter ringförmiger Abstandshalter vorgesehen sein, der den Körper 6 umgebend an diesem angebracht ist und an dessen freiem Ende ein Dichtmittel angeordnet ist. Bevorzugt sind Abstandshalter mit unterschiedlicher radialer Ausdehnung verfügbar, wodurch eine Anpassung an Brunnenrohre mit unterschiedlicher Breite bzw. unterschiedlichem Durchmesser möglich ist. Zum Aufblasen ist ein entsprechender, in den Figuren nicht dargestellter Pumpmechanismus vorzusehen, der ein individuelles Aufblasen und Lösen des jeweiligen Dichtmittels unabhängig von den anderen Dichtmitteln erlaubt.As the figures further show, a first sealing means 14 is provided on the body 6 between the first outlet 10 and the second outlet 12, a second sealing means 16 between the inlet 8 and the first outlet 10 and a third sealing means 20 in the region of the inlet 8 arranged. The sealing means 14, 16, 20 are each arranged in the manner of a cuff enclosing the body 6 and each have an inflatable, annular sealing pad, not shown in detail in the figures, which in the inflated state is in substantially fixed contact with the inner wall 2a of FIG Well pipe 2 ( Fig. 2 ) and thus is in sealing engagement with this and is in the relaxed state out of engagement with the inner wall 2a of the well pipe 2, thus detached from this and is open and at a distance therefrom. Preferably, for the sealing means 14, 16, 20, an annular spacer, not shown in detail in the figures, can be provided, which is attached to the body 6 surrounding it and at the free end of which a sealing means is arranged. Preferably spacers are available with different radial extent, whereby an adaptation to well pipes with different widths or different diameters is possible. To inflate a corresponding, not shown in the figures pump mechanism to provide an individual inflation and Loosening of the respective sealant is allowed independently of the other sealants.

Wie Fig. 1a erkennen lässt, wird zwischen den ersten und zweiten Dichtmitteln 14, 16 ein erstes Abteil bzw. eine erste Kammer 18 gebildet, das nach innen von einem Abschnitt der Außenseite 6a des Körpers 6 und nach außen von der Innenwandung 2a des Brunnenrohres 2 (Fig. 2) begrenzt wird. Da der erste Auslass 10 zwischen den ersten und zweiten Dichtmitteln 14, 16 liegt, mündet er somit in die erste Kammer 18. Unterhalb der ersten Kammer 18 wird zwischen den zweiten und dritten Dichtmitteln 16, 20 ein zweites Abteil bzw. eine zweite Kammer 22 gebildet, das ebenfalls nach innen von der Außenseite 6a des Körpers 6 und nach außen von der Innenwandung 2a des Brunnenrohres 2 begrenzt wird. Da der Einlass 8 für die Pumpe 4 auf der Höhe des dritten Dichtmittels 20 ausgebildet ist, kommuniziert der Einlass 8 mit der zweiten Kammer 22.As Fig. 1a between the first and second sealing means 14, 16, a first compartment or chamber 18 is formed which extends inwardly from a portion of the outer side 6a of the body 6 and outwardly from the inner wall 2a of the well pipe 2 (FIG. Fig. 2 ) is limited. Since the first outlet 10 lies between the first and second sealing means 14, 16, it thus flows into the first chamber 18. Below the first chamber 18, a second compartment or a second compartment 22 is formed between the second and third sealing means 16, 20 which is also bounded inwardly by the outer side 6a of the body 6 and outwardly by the inner wall 2a of the well pipe 2. Since the inlet 8 for the pump 4 is formed at the level of the third sealant 20, the inlet 8 communicates with the second chamber 22.

Zum Schließen und Öffnen der beiden Auslässe 10, 12 ist ein Betätigungselement 24 vorgesehen, das zwischen einer in Fig. 1a gezeigten ersten Stellung und einer in Fig. 1b gezeigten zweiten Stellung in Längsrichtung des Körpers 6 bewegbar ist. Hierzu ist eine, vorzugsweise hydraulische oder pneumatische oder elektrische, Antriebseinrichtung 26 vorgesehen, die im dargestellten Ausführungsbeispiel innerhalb des Betätigungselementes 24 angeordnet ist und einerseits am Betätigungselement 24 angreift und sich andererseits in nicht näher dargestellter Weise am Körper 6 abstützt. Im dargestellten Ausführungsbeispiel ist die Antriebseinrichtung 26 für die Bewegung des Betätigungselementes 24 teleskopisch ausgebildet und befindet sich in der ersten Stellung des Betätigungselementes 24 gemäß Fig. 1a im ausgefahrenen Zustand und in der zweiten Stellung des Betätigungselementes 24 gemäß Fig. 1b im eingefahrenen Zustand. Die Anordnung der beiden Auslässe 10, 12 zueinander ist so getroffen und das Betätigungselement 24 so ausgebildet, dass das Betätigungselement 24 in der ersten Stellung gemäß Fig. 1a den ersten Auslass 10 offen hält und den zweiten Auslass 12 verschließt und in der zweiten Stellung gemäß Fig. 1b den ersten Auslass 10 verschließt und den zweiten Auslass 12 offen hält.For closing and opening the two outlets 10, 12, an actuating element 24 is provided, which between an in Fig. 1a shown first position and one in Fig. 1b shown second position in the longitudinal direction of the body 6 is movable. For this purpose, a, preferably hydraulic or pneumatic or electric, drive means 26 is provided, which is arranged in the illustrated embodiment within the actuating element 24 and on the one hand acts on the actuating element 24 and on the other hand in a manner not shown on the body 6 is supported. In the illustrated embodiment, the drive means 26 is formed telescopically for the movement of the actuating element 24 and is located in the first position of the actuating element 24 according to Fig. 1a in the extended state and in the second position of the actuating element 24 according to FIG Fig. 1b in retracted state. The arrangement of the two outlets 10, 12 to each other is made so and the actuating element 24 is formed so that the actuating element 24 in the first position according to Fig. 1a holds the first outlet 10 open and closes the second outlet 12 and in the second position according to FIG Fig. 1b closes the first outlet 10 and keeps the second outlet 12 open.

Wie die Figuren des Weiteren erkennen lassen, ist das Betätigungselement 24 an seinem unteren Ende mit einem hülsenförmigen Abschnitt 24a versehen, der die Außenseite 6a des Körpers 6 umgibt und so ausgebildet und angeordnet ist, dass er sich in der ersten Stellung des Betätigungselementes 24a gemäß Fig. 1a oberhalb des ersten Auslasses 10 befindet und somit den ersten Auslass 10 freigibt und in der zweiten Stellung des Betätigungselementes 24 gemäß Fig. 1b den ersten Auslass 10 bedeckt und somit verschließt. Des Weiteren weist im dargestellten Ausführungsbeispiel das Betätigungselement 24 ein geschlossenes oberes Ende 24b auf, mit dem es in seiner ersten Stellung den oberen zweiten Auslass 12 verschließt, wie Fig. 1a zu entnehmen ist, und sich in seiner zweiten Stellung in einem Abstand vom zweiten Auslass 12 befindet, und diesen dadurch öffnet, wie Fig. 1b zu entnehmen ist.As can be further seen from the figures, the actuating element 24 is provided at its lower end with a sleeve-shaped portion 24a which surrounds the outer side 6a of the body 6 and is designed and arranged such that, in the first position of the actuating element 24a according to FIG Fig. 1a is located above the first outlet 10 and thus the first outlet 10 releases and in the second position of the actuating element 24 according to Fig. 1b covers the first outlet 10 and thus closes. Furthermore, in the illustrated embodiment, the actuator 24 has a closed upper end 24b with which it closes the upper second outlet 12 in its first position, such as Fig. 1a can be seen, and is in its second position at a distance from the second outlet 12, and this opens by how Fig. 1b can be seen.

Des Weiteren ist in Fig. 1 ein sog. Schlauchpaket 28 angedeutet, das zum einen in den Figuren nicht im Einzelnen erkennbar dargestellte Druckluftleitungen zur Versorgung der Dichtmittel 14, 16, 20 mit Druckluft und zum anderen eine ebenfalls in den Figuren im Einzelnen nicht erkennbar dargestellte Flüssigkeitsleitung zum Einbringen von Flüssigkeit, insbesondere Reinigungsflüssigkeit, in einen Bereich zwischen der Außenseite 6a des Körpers 6 und der Innenwandung 2a des Brunnenrohres 2 (Fig. 2) umfasst, wobei im dargestellten Ausführungsbeispiel die Flüssigkeitsleitung in einem Bereich benachbart zum Einlass 8 und zum dritten Dichtmittel 20 endet. Ferner enthält das Schlauchpaket 28 noch eine in den Figuren ebenfalls nicht erkennbar dargestellte Probenentnahmeleitung, die wie die zuvor erwähnte Flüssigkeitsleitung als Schlauch oder Rohr ausgebildet sein kann und dazu dient, zu Prüfzwecken aus dem Brunnenrohr 2 Flüssigkeit abzugeben, die neben der Reinigungsflüssigkeit auch Brunnenwasser sowie Verunreinigungen enthält; insbesondere wird in Abhängigkeit vom Prüfungsergebnis die Zugabe von Reinigungsflüssigkeit erhöht oder auch verringert.Furthermore, in Fig. 1 a so-called hose package 28 indicated that on the one hand in the figures not shown in detail compressed air lines for supplying the sealing means 14, 16, 20 with compressed air and on the other hand also in the figures not shown in detail fluid conduit for introducing liquid, in particular Cleaning liquid, in a region between the outer side 6a of the body 6 and the inner wall 2a of the well pipe 2 (FIG. Fig. 2 ), wherein in the illustrated embodiment, the liquid line terminates in a region adjacent to the inlet 8 and the third sealant 20. Further, the hose assembly 28 also contains a sampling line also not shown in the figures, which may be formed as the previously mentioned liquid line as a hose or pipe and serves for testing purposes from the well pipe 2 liquid to give, in addition to the cleaning liquid well water and impurities contains; In particular, the addition of cleaning fluid is increased or decreased depending on the test result.

Schließlich ist eine in den Figuren nicht dargestellte Steuerungseinrichtung vorgesehen, die die Dichtmittel 14, 16, 20 und das Betätigungselement 24 so steuert, dass im ersten Betriebszustand "Umwälzen und Regenerieren" das Betätigungselement 24 in seine erste Stellung gemäß Fig. 1a bewegt wird, um den ersten Auslass 10 zu öffnen und den zweiten Auslass 12 zu verschließen, und alle drei Dichtmittel 14, 16, 20 durch Beaufschlagung mit Druckluft in Eingriff mit der Innenwandung 2a des Brunnenrohres 2 gebracht werden und im zweiten Betriebszustand "Abpumpen" das Betätigungselement 24 in seine zweite Stellung gemäß Fig. 1b bewegt wird, um den ersten Auslass 10 zu verschließen und den zweiten Auslass 12 zu öffnen, und das erste Dichtmittel 14 in Eingriff mit der Innenwandung 2a des Brunnenrohres 2 und das zweite Dichtmittel 16 außer Eingriff von der Innenwandung 2a des Brunnenrohres 2 gebracht und somit von dieser gelöst wird.Finally, a control device, not shown in the figures is provided, which controls the sealing means 14, 16, 20 and the actuator 24 so that in the first operating state "circulating and regenerating" the actuator 24 in its first position according to Fig. 1a is moved to open the first outlet 10 and to close the second outlet 12, and All three sealing means 14, 16, 20 are brought by application of compressed air into engagement with the inner wall 2a of the well pipe 2 and in the second operating state "pumping" the actuator 24 in its second position according to Fig. 1b is moved to close the first outlet 10 and open the second outlet 12, and the first sealing means 14 in engagement with the inner wall 2a of the well pipe 2 and the second sealing means 16 is disengaged from the inner wall 2a of the well pipe 2 and thus of this is solved.

Das in den Figuren dargestellte Regeneriergerät ist mit dem oberen Ende seines Gehäuses benachbart zum zweiten Auslass 12 an einer in den Figuren nicht gezeigten Trosse aufgehängt, die während des Einbringens des Regeneriergerätes in das Brunnenrohr 2 von einer Rolle an einem ebenfalls nicht dargestellten Kran oder entsprechenden Gestell abgewickelt wird und bevorzugt aus einem Drahtseil oder einer Kette besteht.The regenerating device shown in the figures is suspended with the upper end of its housing adjacent to the second outlet 12 on a hawser, not shown in the figures, during the introduction of the Regeneriergerätes in the well pipe 2 from a roll on a crane, not shown, or corresponding frame is unwound and preferably consists of a wire rope or a chain.

Im ersten Betriebszustand, in dem das Regeneriergerät nicht nur in Fig. 1a, sondern auch in Fig. 2a dargestellt ist, wird zunächst eine Regenerierflüssigkeit über das Schlauchpaket 28 in den Einlass 8 geleitet. Vom Einlass 8 wird die Regenerierflüssigkeit mithilfe der Pumpe 4 in das Innere des Körpers 6 und von dort nach oben gepumpt, was in Fig. 2a durch den Pfeil 30 angedeutet ist. Diese Flüssigkeit tritt dann aus dem geöffneten ersten Auslass 10 im Bereich der oberen Kammer 18 aus und gelangt aufgrund des Druckes der Pumpe 4 durch die perforierte Innenwandung 2a des Brunnenrohres 2 in den das Brunnenrohr 2 umgebenden Bereich, bei dem es sich gewöhnlich um ein Kiesbett handelt. Anschließend tritt die Flüssigkeit, deren Verlauf in Fig. 2a schematisch anhand von Pfeilen 32 angedeutet ist, von außen wieder durch die perforierte Innenwandung 2a in das Brunnenrohr 2 ein und gelangt dort in die untere zweite Kammer 22, wo sie dann durch den Einlass 8 von der Pumpe 4 angesogen und wieder in das Innere des Körpers 2 und dort nach oben in Richtung des Pfeils 30 gepumpt wird. Somit wird die Regenerierflüssigkeit einer Umwälzung in Richtung der in Fig. 2a gezeigten Pfeile 30, 32 unterworfen. Befindet sich dabei genügend Regenerierflüssigkeit im Umwälzprozess, wird die Zufuhr neuer Regenerierflüssigkeit durch das Schlauchpaket 28 eingestellt.In the first operating state, in which the regenerator not only in Fig. 1a but also in Fig. 2a is shown, a regeneration liquid is first passed through the hose assembly 28 in the inlet 8. From the inlet 8, the regeneration liquid is pumped by means of the pump 4 into the interior of the body 6 and from there to the top, which is in Fig. 2a indicated by the arrow 30. This liquid then exits the open first outlet 10 in the region of the upper chamber 18 and, due to the pressure of the pump 4, passes through the perforated inner wall 2a of the well pipe 2 into the area surrounding the well pipe 2, which is usually a gravel bed , Subsequently, the liquid, whose course in Fig. 2a schematically indicated by arrows 32, from the outside again through the perforated inner wall 2a in the well pipe 2 and enters there into the lower second chamber 22, where it is then sucked through the inlet 8 of the pump 4 and back into the interior of the body 2 and is pumped up there in the direction of arrow 30. Thus, the regeneration liquid of a circulation in the direction of Fig. 2a shown arrows 30, 32 subjected. If there is sufficient regeneration liquid in the circulation process, the supply of new regeneration liquid through the hose package 28 is set.

Während gemäß der Darstellung von Fig. 2a der Umwälzvorgang nur auf die beiden Kammern 18, 22 (Fig. 1a) beschränkt ist, welche sich nur über einen vertikalen Abschnitt des Brunnenrohres 2 erstrecken, ist es im ersten Betriebszustand "Umwälzen und Regenerieren" alternativ auch denkbar, das untere dritte Dichtmittel 20 außer Eingriff von der Innenwandung 2a des Brunnenrohres 2 zu bringen und somit von diesem zu lösen. Dies hat zur Folge, dass der Umwälzprozess auch Abschnitte des Brunnenrohres unterhalb der dritten Dichtung 20 erfasst und gegebenenfalls sogar bis zum Boden bzw. Sumpf des Brunnenrohres reicht.While according to the presentation of Fig. 2a the circulation process only to the two chambers 18, 22 ( Fig. 1a ) is limited, which extend only over a vertical portion of the well pipe 2, it is also conceivable in the first operating state "circulating and regenerating" to bring the lower third sealant 20 disengaged from the inner wall 2a of the well pipe 2 and thus of this to solve. This has the consequence that the recirculation process also covers sections of the well pipe below the third seal 20 and optionally even extends to the bottom or sump of the well pipe.

Für den zweiten Betriebszustand "Abpumpen", in dem das Regeneriergerät nicht nur in Fig. 1b, sondern auch in Fig. 2b gezeigt ist, wird das mittlere zweite Dichtmittel 16 außer Eingriff von der Innenwandung 2a des Brunnenrohres 2 gebracht und somit von dieser gelöst und geöffnet, während das Betätigungselement 24 in seine zweite Stellung verbracht wird, um den ersten Auslass 10 zu schließen und den zweiten Auslass 12 zu öffnen. Dadurch kann die in der Umgebung des Brunnenrohres 2 befindliche Regenerierflüssigkeit aus einem Bereich abgepumpt werden, der sich auf Höhe der beiden Kammer 18, 22 befindet und dessen vertikale Höhe der Summe der vertikalen Höhen der beiden Kammern 18, 22 entspricht. Aus diesem Bereich wird mithilfe der Saugwirkung der Pumpe 4 die Flüssigkeit in Richtung auf das untere dritte Dichtmittel 20, das sich ja noch in Eingriff mit der Innenwandung 2a des Brunnenrohres 2 befindet, gezogen und durch den Einlass 8 (Fig. 1) angesaugt, was in Fig. 2b anhand der Pfeile 34 schematisch angedeutet ist. Die durch den Einlass 8 gezogene Flüssigkeit wird von der Pumpe 4 in das Innere des Körpers 6 und dort gemäß dem in Fig. 2b dargestellten Pfeil 30 nach oben bis zum zweiten Auslass 12 gepumpt, wo sie dann das Regeneriergerät und somit auch das Brunnenrohr 2 verlässt.For the second operating state "pumping out", in which the regenerator not only in Fig. 1b but also in Fig. 2b 4, the middle second sealant 16 is disengaged from the inner wall 2a of the well pipe 2 and thus released and opened therefrom, while the actuator 24 is moved to its second position to close the first outlet 10 and the second outlet 12 to open. As a result, the regeneration liquid located in the vicinity of the well pipe 2 can be pumped out of an area which is located at the level of the two chambers 18, 22 and whose vertical height corresponds to the sum of the vertical heights of the two chambers 18, 22. From this area, by means of the suction effect of the pump 4, the liquid is drawn in the direction of the lower third sealing means 20, which is still in engagement with the inner wall 2a of the well pipe 2, and through the inlet 8 (FIG. Fig. 1 sucked what was in Fig. 2b indicated schematically by arrows 34. The liquid drawn through the inlet 8 is conveyed by the pump 4 into the interior of the body 6 and there according to the in FIG Fig. 2b shown arrow 30 pumped up to the second outlet 12, where it then leaves the regenerator and thus also the well pipe 2.

Bei einem Wechsel zwischen den beiden Betriebszuständen wird die Pumpe 4 von der Steuerungseinrichtung bevorzugt so gesteuert, dass sie bereits vor Verlassen des einen Betriebszustandes außer Betrieb gesetzt und erst nach vollständigem Erreichen des anderen Betriebszustandes wieder in Betrieb gesetzt wird.In a change between the two operating conditions, the pump 4 is preferably controlled by the controller so that it is already set before leaving the one operating state out of service and only after complete reaching the other operating state is put back into operation.

Des Weiteren ist an die Steuerungseinrichtung ein ebenfalls in den Figuren nicht dargestellter Schalter angeschlossen, dessen Betätigung dazu führt, dass die Kraft oder der Druck, womit der Eingriff eines Dichtmittels 14, 16 oder 20 mit der Innenwandung 2a des Brunnenrohrs 2 bewirkt wird, einen vorbestimmten Wert nicht übersteigt oder für den Fall, dass bereits eine höhere Kraft bzw. ein höherer Druck anliegt, auf den vorbestimmten Wert reduziert wird. Dieser vorbestimmte Wert ist so zu bemessen, dass bei dessen Überschreiten eine das Dichtmittel 14, 16, 20 beaufschlagende Saug- oder Druckkraft, verursacht durch das Pumpen der Reinigungsflüssigkeit, ein, zumindest teilweises und/oder temporäres, Lösen des Dichtmittels 14, 16, 20 von der Innenwandung 2a des Brunnenrohres 2 bewirkt. Somit wirkt ein solcher Schalter als eine Art Notfallschalter, der vom Bediener betätigt wird, wenn das Regeneriergerät innerhalb des Brunnenrohres 2 Gefahr läuft, dass es mit zu hohen Saug- oder Druckkräften seitens der Flüssigkeit beaufschlagt wird und sich dadurch in unbeabsichtigter Weise innerhalb des Brunnenrohres 2 in Bewegung setzt. Vorzugsweise sollen mit Betätigung eines solchen Schalters gleichzeitig sämtliche Dichtmittel 14, 16, 20 entsprechend gesteuert werden.Furthermore, a switch, likewise not shown in the figures, is connected to the control device, the actuation of which causes the force or the pressure with which the engagement of a sealing means 14, 16 or 20 with the inner wall 2a of the well pipe 2 to be effected to be predetermined Value does not exceed or in the event that already applied to a higher force or a higher pressure is reduced to the predetermined value. This predetermined value is to be such that when it exceeds a suction or pressure force acting on the sealing means 14, 16, 20, caused by the pumping of the cleaning liquid, a, at least partial and / or temporary, release of the sealant 14, 16, 20th caused by the inner wall 2a of the well pipe 2. Thus, such a switch acts as a kind of emergency switch, which is operated by the operator when the regenerator within the well pipe 2 runs the risk that it is subjected to excessive suction or pressure forces from the liquid and thereby unintentionally within the well pipe. 2 sets in motion. Preferably, all the sealing means 14, 16, 20 should be controlled in accordance with the operation of such a switch at the same time.

Ist der zuvor beschriebene zweistufige Prozess abgeschlossen, werden alle Dichtmittel 14, 16, 20 entlastet und somit außer Eingriff von der Innenwandung 2a des Brunnenrohres 2 gebracht und das Regeneriergerät innerhalb des Brunnenrohres 2 um ein entsprechendes Maß verschoben, welches bevorzugt der Summe der vertikalen Höhen der beiden Kammern 18, 22 entspricht. Dieser Vorgang wiederholt sich, bis der zu behandelnde Bereich innerhalb des Brunnenrohres 2 oder das Brunnenrohr 2 über die gesamte Länge abgearbeitet ist.If the two-stage process described above is completed, all sealing means 14, 16, 20 are relieved and thus brought out of engagement with the inner wall 2a of the well pipe 2 and the regenerator within the well pipe 2 shifted by a corresponding amount, which preferably the sum of the vertical heights of two chambers 18, 22 corresponds. This process is repeated until the area to be treated within the well pipe 2 or the well pipe 2 is processed over the entire length.

Dabei hängt das Regeneriergerät weiterhin an der zuvor erwähnten Trosse, welche nach Abschluss eines jeden zuvor beschriebenen Verfahrens um das erwähnte entsprechende Maß ab- oder aufgewickelt wird. Nach Beendigung des gesamten Betriebes wird dann das Regeneriergerät mithilfe der Trosse wieder vollständig aus dem Brunnenrohr 2 herausgezogen.In this case, the regenerating device still hangs on the aforementioned hawser, which after completion of each method described above by the said corresponding measure off or wound. After completion of the entire operation, the regenerator is then completely pulled out of the well pipe 2 using the hawser again.

Die Funktionen und hierfür vorgesehene, in den Figuren nicht dargestellte Stellglieder des Regeneriergerätes lassen sich wahlweise je nach Ausführung pneumatisch und/oder hydraulisch und/oder elektrisch und/oder elektromagnetisch und/oder elektronisch bedienen und steuern. Bevorzugt ist die erwähnte Steuerungseinrichtung für einen vollautomatischen Betrieb ausgelegt. Hierfür kann vorzugsweise eine speicherprogrammierbare Steuerung verwendet werden, die sowohl im Handbetrieb als auch im Automatikbetrieb genutzt werden kann.The functions and provided for this purpose, not shown in the figures actuators of the Regeneriergerätes can be optionally pneumatically depending on the design and / or hydraulically and / or electrically and / or electromagnetically and / or electronically operate and control. Preferably, the mentioned control device is designed for fully automatic operation. For this purpose, preferably a programmable logic controller can be used, which can be used both in manual mode and in automatic mode.

Claims (17)

  1. Device for cleaning a perforated well pipe (2), and preferably also a discharge surrounding the well pipe, in particular in a deep well,
    comprising a pump (4),
    comprising a preferably elongated and/or tubular body (6), which comprises at least one inlet (8) through which the pump (4) suctions fluid, and at least one first outlet (10) and a second outlet (12), wherein the first and second outlets (10, 12) are provided for the output of fluid pumped by the pump (4),
    comprising at least one first sealing means (14) and one second sealing means (16), wherein the first and second sealing means (14, 16) are attached to the body (6), wherein the second sealing means (16) is arranged underneath the first sealing means (14) at a distance from the latter, with a first compartment (18) formed between the first and second sealing means (14, 16) and delimited by a section of the outside (6a) of the body (6), into which compartment the first outlet (10) leads, whereas the second outlet (12) is arranged above the first sealing means (14) and thus above and outside the first compartment (18), characterised in that the sealing means (14, 16) can be moved optionally into sealing engagement with or disengaged from an inner wall (2a) of the well pipe (2), and in that the device comprises an opening and closing device, which is designed to keep the first outlet (10) open in a first operating mode and to close the second outlet (12) and in a second operating mode to close the first outlet (10) and keep the second outlet (12) open.
  2. Device according to claim 1,
    comprising at least one third sealing means (20) attached to the body (6), which can be brought optionally into sealing engagement with or disengaged from the inner wall (2a) of the well pipe (2) and is arranged underneath the second sealing means (16) at a distance from the latter, and with a second compartment (22) formed between the second and third sealing means (16, 20) and delimited by a section of the outside of the body (6), with which compartment the inlet (8) communicates.
  3. Device according to claim 1 or 2, in which at least one of the sealing means (14, 16, 20) is provided in an arrangement essentially surrounding the body (6) in the form of a cuff.
  4. Device according to at least one of the preceding claims, comprising at least one spacer attached to the body (6) and projecting from the body (6), at the free end of which spacer a sealing means is arranged.
  5. Device according to claims 3 and 4, in which the spacer is designed as a flange-like ring essentially surrounding the body (6).
  6. Device according to claim 4 or 5, in which the spacer is attached releasably to the body (6) so that it is possible optionally to use spacers with different expansions depending on the opening cross-section of the well pipe.
  7. Device according to at least one of the preceding claims, in which at least one of the sealing means (14, 16, 20) can be moved into sealing engagement with the inner wall of the well pipe (2) only with predetermined force, and if the latter is exceeded a suction or compression force loading the sealing means causes the at least partial and/or temporary release of the engagement of the sealing means with the inner wall of the well pipe (2).
  8. Device according to at least one of the preceding claims, in which at least one of the sealing means (14, 16, 20) comprises an inflatable body (6).
  9. Device according to at least one of the preceding claims, in which the opening and closing device comprises an activating element (24) arranged movably inside the body (6) between a first position and a second position and the arrangement of the first and second outlets (10, 12) relative to one another is such and the activating element (24) is designed so that in the first position the activating element (24) holds the first outlet (10) open and closes the second outlet (12) and in a second position closes the first outlet (10) and keeps the second outlet (12) open.
  10. Device according to at least one of the preceding claims, in which the first outlet (10) is arranged on at least one external side (6a) of the body (6), the activating element (24) comprises at least one preferably sleeve-like section (24a) arranged on at least one external side of the body (6), which section is designed and arranged so that it is located in the first position of the activating element (24) at a distance from the first outlet (10) and thus releases the first outlet (10) and in the second position of the activating element (24) covers the first outlet (10) and thus closes it.
  11. Device according to at least one of the preceding claims, in which the second outlet (12) is arranged on the upper side of the body (6).
  12. Device according to claim 9 and 11, in which the activating element (24) is designed so that in its first position it closes the second outlet (12) with its upper side (24b) and in its second position it is located at a distance from the second outlet (12).
  13. Device according to at least one of the preceding claims comprising a control device, which in the first operating mode is designed to open the first outlet (10), to close the second outlet (12) and move the first and second sealing means (14, 16) into sealing engagement with the inner wall (2a) of the well pipe (2), and in the second operating mode to close the first outlet (10), to open the second outlet (12) and to move the first sealing means (14) into engagement with the inner wall (2a) of the well pipe (2) and to move the second sealing means (16) out of engagement with the inner wall (2a) of the well pipe (2).
  14. Device according to claims 2 and 13, in which the control device is designed, both in the first operating mode and in the second operating mode, to move the third sealing means (20) into engagement with the inner wall (2a) of the well pipe (2).
  15. Device according to claim 14, in which the control device is designed in the first operating mode alternatively to move the third sealing means (20) out of engagement with the inner wall of the well pipe (2).
  16. Device according to at least one of claims 13 to 15, in which the control device is designed, when changing between the first operating mode and the second operating mode, to disable the pump (4), wherein in particular the control device is designed to disable the pump (4) before leaving one operating mode and only switch it on after completely reaching the other operating mode.
  17. Device according to at least one of claims 13 to 16 and according to claim 7, in which the control device has a switch, which when activated moves the at least one sealing means (14, 16, 20) into sealing engagement with the inner wall (2a) of the well pipe (2) only with predetermined force.
EP15194626.6A 2014-11-14 2015-11-13 Device for cleaning a perforated well pipe Active EP3020876B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15194626T PL3020876T3 (en) 2014-11-14 2015-11-13 Device for cleaning a perforated well pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202014008990.6U DE202014008990U1 (en) 2014-11-14 2014-11-14 Device for cleaning a perforated well pipe

Publications (2)

Publication Number Publication Date
EP3020876A1 EP3020876A1 (en) 2016-05-18
EP3020876B1 true EP3020876B1 (en) 2017-08-02

Family

ID=54544993

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15194626.6A Active EP3020876B1 (en) 2014-11-14 2015-11-13 Device for cleaning a perforated well pipe

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Country Link
EP (1) EP3020876B1 (en)
DE (1) DE202014008990U1 (en)
DK (1) DK3020876T3 (en)
PL (1) PL3020876T3 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2288233A (en) * 1940-11-08 1942-06-30 Artesian Well & Equipment Co I Apparatus for increasing the flow of water in artesian wells
DE4204991A1 (en) * 1991-12-24 1993-07-01 Ieg Ind Engineering Gmbh METHOD AND DEVICE FOR INFLUENCING LIQUID IN THE GROUND
DE4335164A1 (en) * 1993-10-15 1995-04-20 Ieg Ind Engineering Gmbh Device for influencing liquid in the ground

Non-Patent Citations (1)

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

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Publication number Publication date
DK3020876T3 (en) 2017-11-13
DE202014008990U1 (en) 2016-02-16
PL3020876T3 (en) 2018-03-30
EP3020876A1 (en) 2016-05-18

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