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EP1213055A1 - Nozzle for high pressure injection drill system and high pressure injection drill tool - Google Patents

Nozzle for high pressure injection drill system and high pressure injection drill tool Download PDF

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Publication number
EP1213055A1
EP1213055A1 EP01128905A EP01128905A EP1213055A1 EP 1213055 A1 EP1213055 A1 EP 1213055A1 EP 01128905 A EP01128905 A EP 01128905A EP 01128905 A EP01128905 A EP 01128905A EP 1213055 A1 EP1213055 A1 EP 1213055A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
injection nozzle
injection
fluid
fluid channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01128905A
Other languages
German (de)
French (fr)
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EP1213055B1 (en
Inventor
Günter Fennel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Boart Longyear GmbH and Co KG
Original Assignee
Boart Longyear GmbH and Co KG Hartmetallwerkzeugfabrik
Boart HWF GmbH and Co KG Hartmetallwerkzeugfabrik
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Publication date
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Publication of EP1213055A1 publication Critical patent/EP1213055A1/en
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Publication of EP1213055B1 publication Critical patent/EP1213055B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3402—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to avoid or to reduce turbulencies, e.g. comprising fluid flow straightening means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/0078—Nozzles used in boreholes

Definitions

  • the invention relates to an injection nozzle for high-pressure injection drilling systems according to the preamble of claim 1 and a high-pressure injection drilling tool with such an injection nozzle according to the preamble of Claim 11.
  • the known injection nozzles that are used for such systems have a fluid channel with a round inner cross section. To be as possible large blocks of concrete have been tried with little success, by extending the injection nozzles or extending through them extending fluid channel to bundle the injection jet to larger diameters to reach.
  • a high pressure injection nozzle is therefore proposed in DE 199 22 820 A1, in which a blocking element in the form of a cross directly in the nozzle body is arranged before the fluid exits the nozzle.
  • the nozzle has a narrow feed channel that extends in the direction of flow of the fluid over a Entry section into a nozzle space expanded in a funnel shape.
  • In one yourself then increase the inside diameter of the nozzle Exit section is then arranged the locking element.
  • the shape of the fluid hits the locking element and at high speed is slowed down and divided.
  • a satisfactory bundling of the Fluid jet does not take place. Rather, the fluid jet loses energy and Exit speed and therefore length.
  • the invention is therefore concerned with the problem of an injection nozzle for High pressure injection drilling systems or a high pressure injection drilling tool to create concrete blocks with the largest possible diameter to create.
  • the non-circular internal cross-sectional shape of the fluid channel of the invention newly developed injection nozzle brakes the resulting vertebrae within the Nozzle and thus bundles the injection jet over the entire length of the nozzle to the outlet, so that a calm, uniform jet without turbulence Leaves nozzle that remains sharp over a long length. This allows significantly larger concrete block diameters can be achieved and it must fewer holes are drilled to the same concrete platform area cover. The construction times and construction costs are reduced considerably.
  • Injection nozzles whose inner cross section into the fluid channel are particularly effective protruding guiding profiles, since these the resulting vertebrae brake particularly well.
  • Preferred designs are therefore injection nozzles in the fluid channel protruding wings or wedge-like guide profiles that at contiguous arrangement a star-shaped inner cross section of the Fluid channel result.
  • the vortex braking and bundling effect is particularly great when the guide profiles are rib-shaped and preferably over the entire length of the nozzle extend.
  • nozzle insert which is inserted into and with the nozzle body for example by screwing, soldering or gluing. Manufacturing the nozzle insert from hard metal extends its service life and thus reduces any set-up times for a change.
  • the high-pressure injection drilling tool shown in Fig. 1 consists of a Drill pipe 1 through which a fluid line 2 extends. front panel a drill bit 3 is arranged on the drill pipe 1. In the direction of fluid flow 4 in front of the drill bit 3 there are injection nozzles 5 with a nozzle body 6, in which a nozzle insert 7 is inserted.
  • the nozzle insert 7 is shown in more detail in FIGS. 4 and 5. Through the nozzle insert 7 extends a fluid channel 8 which - as can be seen in FIGS. 2 to 4 is - a non-circular over the entire length L of the fluid channel 8 constant Has internal cross section.
  • Fig. 6 shows various non-circular inner cross-sectional shapes, all of which in the fluid jet during the deflection from the fluid line 2 into the fluid channel 8 brake the resulting vortices and thereby concentrate the fluid jet.
  • the guide profiles 9 are wedge-shaped and arranged close together so that there is a star-shaped inner cross section results.
  • the guide profiles 9 form trains 10 and fields 9 '. at the embodiment according to FIGS. 6f and 2 to 5 are the guide profiles wing-like and protrude far into the interior of the fluid channel 8.
  • the Eddy braking effect and the associated bundling of the fluid jet is particularly pronounced in this embodiment.
  • the number of guiding profiles is limits. Even a single guiding profile already has a positive effect. embodiments with three or four guide profiles, however, lead to a special one good bundling of the fluid jet.
  • the injection nozzle preferably has one Inlet section 11, which is connected upstream of the fluid channel 8. This creates a smooth transition of the cross-sectional constriction from the fluid line 2 in the fluid channel 8. This narrowing of the cross section of the Inlet section 11, viewed from the inside of the nozzle, is convexly rounded.
  • the guide profiles 9 can also, as indicated by dashed lines in FIG. 5, already start in the inlet section 11, which already prevents in this area will cause an undesirable swirl or swirl to form in the fluid.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Soil Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Nozzles (AREA)

Abstract

Injection nozzle for high-pressure injection drilling systems comprises a nozzle body and a fluid channel (8) for the injection fluid having a non-round internal cross-section and extending through the nozzle body in a longitudinal direction. An Independent claim is also included for a high-pressure injection drilling tool comprising the above injection nozzle. Preferred Features: Rib-shaped guide profiles (9) protrude into the fluid channel. The guide profiles extend in the longitudinal direction of the nozzle, preferably over the entire length of the nozzle. The injection nozzle has a star-shaped internal cross-section.

Description

Die Erfindung betrifft eine Injektionsdüse für Hochdruckinjektionsbohrsysteme nach dem Oberbegriff des Anspruchs 1 sowie ein Hochdruckinjektionsbohrwerkzeug mit einer derartigen Injektionsdüse nach dem Oberbegriff des Anspruchs 11.The invention relates to an injection nozzle for high-pressure injection drilling systems according to the preamble of claim 1 and a high-pressure injection drilling tool with such an injection nozzle according to the preamble of Claim 11.

Mit den bekannten Hochdruckinjektionsbohrsystemen wird nach dem Abbohren eines Bohrstrangs in bis zu 30 Metern Tiefe mit über 400 bar Druck Zementschlämme ins Erdreich injiziert, um vor dem Baugrubenaushub eine wasserdichte Betonplattform zu erstellen. Dazu wird durch die Fluidleitung eines Hochdruckinjektionsbohrwerkzeuges das Fluid, nämlich die Zementschlämme, hinabgepumpt und über zumindest eine mit der Fluidleitung verbundene Injektionsdüse über das sich drehende Hochdruckinjektionsbohrwerkzeug kreisförmig um dieses herumgespritzt, so daß ein kreisförmiger Betonblock entsteht. Die zu erstellende Betonplattform wird durch viele aneinandergereihte Betonblöcke gebildet, die sich gegenseitig teilweise überschneiden. Je größer der Durchmesser der einzelnen Betonblöcke ist, umso weniger Bohrungen müssen niedergebracht werden, um die gewünschte Betonplattformgröße zu erhalten.With the known high-pressure injection drilling systems, after drilling a drill string in a depth of up to 30 meters with over 400 bar pressure cement slurry injected into the ground to provide a watertight one before excavation Create concrete platform. For this purpose, a High pressure injection drilling tool the fluid, namely the cement slurry, pumped down and via at least one injection nozzle connected to the fluid line circular over the rotating high pressure injection drilling tool sprayed around this so that a circular concrete block is formed. The too Creating concrete platform is through many strung together concrete blocks formed, which partially overlap each other. The larger the diameter of the individual concrete blocks, the fewer holes need to be drilled be brought down to get the desired concrete platform size.

Die bekannten Injektionsdüsen, die für derartige Systeme eingesetzt werden, weisen einen Fluidkanal mit einem runden Innenquerschnitt auf. Um möglichst große Betonblöcke zu erhalten, hat man bereits ohne großen Erfolg versucht, durch Verlängerung der Injektionsdüsen bzw. des sich durch diese hindurch erstreckenden Fluidkanals den Injektionsstrahl zu bündeln, um größere Durchmesser zu erreichen. The known injection nozzles that are used for such systems, have a fluid channel with a round inner cross section. To be as possible large blocks of concrete have been tried with little success, by extending the injection nozzles or extending through them extending fluid channel to bundle the injection jet to larger diameters to reach.

Es hat sich gezeigt, daß bei den herkömmlichen Injektionsdüsen in dem zu injizierenden Fluid durch dessen annähernd rechtwinklige Umleitung aus der Fluidleitung des Bohrgestänges in den Fluidkanal der Injektionsdüse Wirbel entstehen, durch die der Injektionsstrahl bei Verlassen der Injektionsdüse frühzeitig aufsprüht und an Wirkung verliert, so daß sich nur geringe Betonblockdurchmesser ergeben.It has been shown that in the conventional injection nozzles in the injecting fluid by diverting it from the Fluid line of the drill pipe in the fluid channel of the injection nozzle vortex arise through which the injection jet early when leaving the injection nozzle sprayed on and loses effect, so that only small concrete block diameter result.

In der DE 199 22 820 A1 wird daher eine Hochdruckinjektionsdüse vorgeschlagen, bei der im Düsenkörper ein Sperrelement in Form eines Kreuzes unmittelbar vor dem Austritt des Fluids aus der Düse angeordnet ist. Die Düse hat einen schmalen Zufuhrkanal, der sich in Flußrichtung des Fluids über einen Eintrittsabschnitt in einen Düsenraum trichterförmig erweitert. In einem sich daran anschließenden, den Innendurchmesser der Düse noch weiter vergrößernden Austrittsabschnitt ist dann das Sperrelement angeordnet. Bei dieser Düsenform trifft das Fluid mit hoher Geschwindigkeit auf das Sperrelement und wird dadurch abgebremst und aufgeteilt. Eine befriedigende Bündelung des Fluidstrahls findet nicht statt. Vielmehr verliert der Fluidstrahl an Energie und Austrittgeschwindigkeit und somit an Länge.A high pressure injection nozzle is therefore proposed in DE 199 22 820 A1, in which a blocking element in the form of a cross directly in the nozzle body is arranged before the fluid exits the nozzle. The nozzle has a narrow feed channel that extends in the direction of flow of the fluid over a Entry section into a nozzle space expanded in a funnel shape. In one yourself then increase the inside diameter of the nozzle Exit section is then arranged the locking element. At this The shape of the fluid hits the locking element and at high speed is slowed down and divided. A satisfactory bundling of the Fluid jet does not take place. Rather, the fluid jet loses energy and Exit speed and therefore length.

Die Erfindung befaßt sich daher mit dem Problem, eine Injektionsdüse für Hochdruckinjektionsbohrsysteme bzw. ein Hochdruckinjektionsbohrwerkzeug zu schaffen, das es ermöglicht, Betonblöcke mit möglichst großem Durchmesser zu erstellen. The invention is therefore concerned with the problem of an injection nozzle for High pressure injection drilling systems or a high pressure injection drilling tool to create concrete blocks with the largest possible diameter to create.

Erfindungsgemäß wird dieses Problem durch eine Injektionsdüse mit den Merkmalen des Anspruchs 1 bzw. ein Hochdruckinjektionsbohrwerkzeug mit den Merkmalen des Anspruchs 11 gelöst.According to the invention, this problem is solved by an injection nozzle with the Features of claim 1 and a high pressure injection drilling tool solved the features of claim 11.

Durch die Ausbildung des Fluidkanals im Düsenkörper mit einem gleichbleibenden unrunden Innenquerschnitt über die gesamte Fluidkanallänge wird ein wesentlich länger gebündelter Injektionsstrahl ausgebildet, wodurch Betonblöcke größeren Durchmessers erhältlich sind.By forming the fluid channel in the nozzle body with a constant non-circular inner cross section over the entire length of the fluid channel injection beam formed for a much longer time, resulting in concrete blocks larger diameter are available.

Die erfindungsgemäße unrunde Innenquerschnittsform des Fluidkanals der neuentwickelten Injektionsdüse bremst die entstandenen Wirbel innerhalb der Düse ab und bündelt so den Injektionsstrahl über die gesamte Düsenlänge bis zum Austritt, so daß ein ruhiger gleichmäßiger Strahl ohne Verwirbelungen die Düse verläßt, der noch über eine große Länge scharf bleibt. Dadurch können deutlich größere Betonblockdurchmesser erzielt werden und es müssen weniger Bohrungen eingebracht werden, um die gleiche Betonplattformfläche abzudecken. Die Bauzeiten und Baukosten verringern sich damit erheblich.The non-circular internal cross-sectional shape of the fluid channel of the invention newly developed injection nozzle brakes the resulting vertebrae within the Nozzle and thus bundles the injection jet over the entire length of the nozzle to the outlet, so that a calm, uniform jet without turbulence Leaves nozzle that remains sharp over a long length. This allows significantly larger concrete block diameters can be achieved and it must fewer holes are drilled to the same concrete platform area cover. The construction times and construction costs are reduced considerably.

Besonders wirksam sind Injektionsdüsen, deren Innenquerschnitt in den Fluidkanal hineinragende Leitprofile aufweist, da diese die entstandenen Wirbel besonders gut bremsen. Bevorzugte Bauformen sind daher Injektionsdüsen mit in den Fluidkanal hereinragenden Flügeln oder keilartigen Leitprofilen, die bei aneinandergrenzender Anordnung einen sternförmigen Innenquerschnitt des Fluidkanals ergeben. Injection nozzles whose inner cross section into the fluid channel are particularly effective protruding guiding profiles, since these the resulting vertebrae brake particularly well. Preferred designs are therefore injection nozzles in the fluid channel protruding wings or wedge-like guide profiles that at contiguous arrangement a star-shaped inner cross section of the Fluid channel result.

Die Wirbelbrems- und Bündelungswirkung ist besonders groß, wenn die Leitprofile rippenförmig sind und sich vorzugsweise über die gesamte Düsenlänge erstrecken.The vortex braking and bundling effect is particularly great when the guide profiles are rib-shaped and preferably over the entire length of the nozzle extend.

Da die Wandungen des Fluidkanals durch die Zementschlämme einem hohen Verschleiß ausgesetzt sind, ist es vorteilhaft, den Fluidkanal in einem separaten Düseneinsatz auszubilden, der in den Düsenkörper eingesetzt und mit diesem beispielsweise durch Verschrauben, Verlöten oder Verkleben verbunden ist. Eine Fertigung des Düseneinsatzes aus Hartmetall verlängert dessen Standzeit und vermindert so eventuelle Rüstzeiten für einen Wechsel.Because the walls of the fluid channel through the cement slurry have a high Exposed to wear, it is advantageous to separate the fluid channel Train nozzle insert, which is inserted into and with the nozzle body for example by screwing, soldering or gluing. Manufacturing the nozzle insert from hard metal extends its service life and thus reduces any set-up times for a change.

Weitere Vorteile und Einzelheiten ergeben sich aus den Unteransprüchen und in den Zeichnungen dargestellten Ausführungsbeispielen der Erfindung, die im folgenden beschrieben werden; es zeigen:

Fig. 1
ein Hochdruckinjektionsbohrwerkzeug, teilweise im Schnitt,
Fig. 2
eine dreidimensionale Ansicht eines erfindungsgemäßen Düseneinsatzes für eine Injektionsdüse,
Fig. 3
einen Längsschnitt durch den Düseneinsatz aus Fig. 1, in einem Düsenkörper eingesetzt,
Fig. 4
einen Längsschnitt durch den Düseneinsatz aus Fig. 1 in zweidimensionaler Darstellung,
Fig. 5
eine Ansicht aus Richtung V auf den Gegenstand in Fig. 4 und
Fig. 6 a - f
verschiedene Innenquerschnittsformen des Fluidkanals.
Further advantages and details emerge from the subclaims and exemplary embodiments of the invention illustrated in the drawings, which are described below; show it:
Fig. 1
a high pressure injection drilling tool, partly in section,
Fig. 2
2 shows a three-dimensional view of a nozzle insert according to the invention for an injection nozzle,
Fig. 3
2 shows a longitudinal section through the nozzle insert from FIG. 1, inserted in a nozzle body,
Fig. 4
2 shows a longitudinal section through the nozzle insert from FIG. 1 in a two-dimensional representation,
Fig. 5
a view from direction V of the object in Fig. 4 and
6 a - f
different internal cross-sectional shapes of the fluid channel.

Das in Fig. 1. dargestellte Hochdruckinjektionsbohrwerkzeug besteht aus einem Bohrgestänge 1, durch das sich eine Fluidleitung 2 hindurch erstreckt. Frontseitig an dem Bohrgestänge 1 ist eine Bohrkrone 3 angeordnet. In Fluidflußrichtung 4 vor der Bohrkrone 3 befinden sich Injektionsdüsen 5 mit einem Düsenkörper 6, in den ein Düseneinsatz 7 eingesetzt ist.The high-pressure injection drilling tool shown in Fig. 1 consists of a Drill pipe 1 through which a fluid line 2 extends. front panel a drill bit 3 is arranged on the drill pipe 1. In the direction of fluid flow 4 in front of the drill bit 3 there are injection nozzles 5 with a nozzle body 6, in which a nozzle insert 7 is inserted.

Der Düseneinsatz 7 ist in den Fig. 4 und 5 näher dargestellt. Durch den Düseneinsatz 7 erstreckt sich ein Fluidkanal 8, der - wie in den Fig. 2 bis 4 zu erkennen ist - einen unrunden über die gesamte Länge L des Fluidkanals 8 gleichbleibenden Innenquerschnitt aufweist.The nozzle insert 7 is shown in more detail in FIGS. 4 and 5. Through the nozzle insert 7 extends a fluid channel 8 which - as can be seen in FIGS. 2 to 4 is - a non-circular over the entire length L of the fluid channel 8 constant Has internal cross section.

Fig. 6 zeigt verschiedene unrunde Innenquerschnittsformen, die sämtlich die in dem Fluidstrahl bei der Umlenkung aus der Fluidleitung 2 in den Fluidkanal 8 entstehenden Wirbel bremsen und den Fluidstrahl dadurch bündeln.Fig. 6 shows various non-circular inner cross-sectional shapes, all of which in the fluid jet during the deflection from the fluid line 2 into the fluid channel 8 brake the resulting vortices and thereby concentrate the fluid jet.

Besonders starke Bündelungseffekte ergeben sich, wenn der Fluidkanal wie bei den Ausführungsformen der Fig. 6d bis 6f in ihn hineinragende Leitprofile 9 aufweist. Bei der Ausführungsform gemäß Fig. 6d sind die Leitprofile 9 keilförmig und dicht an dicht angeordnet, so daß sich ein sternförmiger Innenquerschnitt ergibt. In Fig. 6e bilden die Leitprofile 9 Züge 10 und Felder 9' aus. Bei der Ausführungsform gemäß Fig. 6f und Fig. 2 bis 5 sind die Leitprofile flügelartig und ragen weit in das Innere des Fluidkanals 8 hinein. Die Wirbelbremswirkung und die damit verbundene Bündelung des Fluidstrahls ist bei dieser Ausführungsform besonders ausgeprägt. Die Zahl der Leitprofile ist schränkt. Auch ein einziges Leitprofil erzielt bereits eine positive Wirkung. Ausführungsformen mit drei oder vier Leitprofilen führen aber zu einer besonders guten Bündelungen des Fluidstrahls.Particularly strong bundling effects result when the fluid channel as in the embodiments of FIGS. 6d to 6f guide profiles 9 projecting into it having. In the embodiment according to FIG. 6d, the guide profiles 9 are wedge-shaped and arranged close together so that there is a star-shaped inner cross section results. In Fig. 6e, the guide profiles 9 form trains 10 and fields 9 '. at the embodiment according to FIGS. 6f and 2 to 5 are the guide profiles wing-like and protrude far into the interior of the fluid channel 8. The Eddy braking effect and the associated bundling of the fluid jet is particularly pronounced in this embodiment. The number of guiding profiles is limits. Even a single guiding profile already has a positive effect. embodiments with three or four guide profiles, however, lead to a special one good bundling of the fluid jet.

Wie in den Figuren 3 bis 5 dargestellt, weist die Injektionsdüse bevorzugt einen Einlaufabschnitt 11 auf, der dem Fluidkanal 8 vorgeschaltet ist. Dieser schafft einen weichen Übergang der Querschnittsverengung von der Fluidleitung 2 in den Fluidkanal 8. Energetisch günstig ist diese Querschnittsverengung des Einlaufabschnitts 11 vom Düseninneren aus betrachtet konvex gerundet ausgebildet. Die Leitprofile 9 können auch wie in Fig. 5 gestrichelt angedeutet bereits im Einlaufabschnitt 11 beginnen, wodurch schon in diesem Bereich verhindert wird, daß sich ein unerwünschter Drall oder Verwirbelungen im Fluid ausbilden.As shown in Figures 3 to 5, the injection nozzle preferably has one Inlet section 11, which is connected upstream of the fluid channel 8. This creates a smooth transition of the cross-sectional constriction from the fluid line 2 in the fluid channel 8. This narrowing of the cross section of the Inlet section 11, viewed from the inside of the nozzle, is convexly rounded. The guide profiles 9 can also, as indicated by dashed lines in FIG. 5, already start in the inlet section 11, which already prevents in this area will cause an undesirable swirl or swirl to form in the fluid.

Claims (11)

Injektionsdüse für Hochdruckinjektionsbohrsysteme mit einem Düsenkörper (6) und einem sich durch diesen in Längsrichtung hindurch erstreckenden Fluidkanal (8) für das zu injizierende Fluid, dadurch gekennzeichnet, daß der Fluidkanal (8) über seine gesamte Länge (L) einen einheitlichen, unrunden Innenquerschnitt aufweist.Injection nozzle for high-pressure injection drilling systems with a nozzle body (6) and a fluid channel (8) extending through it in the longitudinal direction for the fluid to be injected, characterized in that the fluid channel (8) has a uniform, non-circular internal cross section over its entire length (L) , Injektionsdüse nach Anspruch 1, gekennzeichnet durch in den Fluidkanal hineinragende, sich in Längsrichtung der Düse (5) erstreckende Leitprofile (9).Injection nozzle according to Claim 1, characterized by guide profiles (9) which project into the fluid channel and extend in the longitudinal direction of the nozzle (5). Injektionsdüse nach Anspruch 2, dadurch gekennzeichnet, daß sich die Leitprofile (9) zumindest im wesentlichen über die gesamte Düsenlänge erstrecken.Injection nozzle according to claim 2, characterized in that the guide profiles (9) extend at least substantially over the entire length of the nozzle. Injektionsdüse nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Leitprofile (9) rippenförmig sind. Injection nozzle according to claim 2 or 3, characterized in that the guide profiles (9) are rib-shaped. Injektionsdüse nach einem der Ansprüche 2 bis 4, gekennzeichnet durch einen sternförmigen Innenquerschnitt.Injection nozzle according to one of claims 2 to 4, characterized by a star-shaped inner cross section. Injektionsdüse nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß die Leitprofile (9) in dem Fluidkanal Züge (10) und Felder (9') ausbilden.Injection nozzle according to one of claims 2 to 5, characterized in that the guide profiles (9) form trains (10) and fields (9 ') in the fluid channel. Injektionsdüse nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß dem Fluidkanal (8) ein Einlaufabschnitt (11) mit in Fluidflußrichtung (4) sich verengendem Querschnitt vorgeschaltet ist.Injection nozzle according to one of claims 1 to 6, characterized in that the fluid channel (8) is preceded by an inlet section (11) with a cross section narrowing in the direction of fluid flow (4). Injektionsdüse nach Anspruch 7, dadurch gekennzeichnet, daß die Querschnittsverengung des Einlaufabschnitts (11) konvex gerundet ausgebildet ist.Injection nozzle according to claim 7, characterized in that the cross-sectional constriction of the inlet section (11) is convexly rounded. Injektionsdüse nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Fluidkanal (8) in einem in den Düsenkörper (6) eingesetzten Düseneinsatz (7) ausgebildet ist.Injection nozzle according to one of claims 1 to 8, characterized in that the fluid channel (8) is formed in a nozzle insert (7) inserted into the nozzle body (6). Injektionsdüse nach Anspruch 9, dadurch gekennzeichnet, daß der Düseneinsatz (7) aus Hartmetall besteht.Injection nozzle according to claim 9, characterized in that the nozzle insert (7) consists of hard metal. Hochdruckinjektionsbohrwerkzeug mit einem Bohrgestänge (1), einer frontseitig an diesem angeordneten Bohrkrone (3), einer sich durch das Bohrgestänge (1) erstreckenden Fluidleitung (2) und zumindest einer in Fluidflußrichtung (4) vor der Bohrkrone (3) angeordneten, an die Fluidleitung (2) angeschlossenen Injektionsdüse (5), deren Längsachse sich im Winkel zu der Längsachse des Bohrgestänges (1) erstreckt, dadurch gekennzeichnet, daß die Injektionsdüse (5) nach einem der Ansprüche 1 bis 10 ausgebildet ist.High-pressure injection drilling tool with a drill pipe (1), a drill bit (3) arranged on the front of the drill pipe, a fluid line (2) extending through the drill pipe (1) and at least one in the fluid flow direction (4) in front of the drill bit (3) to the fluid line (2) connected injection nozzle (5), the longitudinal axis of which extends at an angle to the longitudinal axis of the drill pipe (1), characterized in that the injection nozzle (5) is designed according to one of Claims 1 to 10.
EP01128905A 2000-12-06 2001-12-05 Nozzle for high pressure injection drill system and high pressure injection drill tool Expired - Lifetime EP1213055B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20020783U DE20020783U1 (en) 2000-12-06 2000-12-06 Injection nozzle for high pressure injection drilling systems and high pressure injection drilling tool
DE20020783U 2000-12-06

Publications (2)

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EP1213055A1 true EP1213055A1 (en) 2002-06-12
EP1213055B1 EP1213055B1 (en) 2007-06-13

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EP01128905A Expired - Lifetime EP1213055B1 (en) 2000-12-06 2001-12-05 Nozzle for high pressure injection drill system and high pressure injection drill tool

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EP (1) EP1213055B1 (en)
AT (1) ATE364450T1 (en)
DE (2) DE20020783U1 (en)
ES (1) ES2287066T3 (en)

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US4703814A (en) * 1986-01-16 1987-11-03 Hughes Tool Company - Usa Earth boring bit having a replaceable, threaded nozzle with wrench socket
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US4494618A (en) * 1982-09-30 1985-01-22 Strata Bit Corporation Drill bit with self cleaning nozzle
US4687066A (en) * 1986-01-15 1987-08-18 Varel Manufacturing Company Rock bit circulation nozzle
US4703814A (en) * 1986-01-16 1987-11-03 Hughes Tool Company - Usa Earth boring bit having a replaceable, threaded nozzle with wrench socket
US5256004A (en) * 1990-07-31 1993-10-26 Fondazioni Speciali, S.R.L. Method of forming consolidated earth columns by injection and the relevant plant and column
EP0565411A1 (en) * 1992-04-06 1993-10-13 Sondages Injections Forages "S.I.F." Entreprise Bachy Method for making an underground watertight screen and the screen so produced
DE19922820A1 (en) 1999-05-19 2000-12-07 Innovations Gmbh As High-pressure injection nozzle, to produce or enhance foundation or to prepare bore hole; has blocking element arranged in nozzle chamber, to remove or disrupt peripheral part of flow

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Publication number Priority date Publication date Assignee Title
US10351893B2 (en) 2015-10-05 2019-07-16 GeneWeave Biosciences, Inc. Reagent cartridge for detection of cells
EP3359291B1 (en) * 2015-10-05 2020-01-15 Roche Diagnostics GmbH Reagent cartridge for detection of cells

Also Published As

Publication number Publication date
ES2287066T3 (en) 2007-12-16
EP1213055B1 (en) 2007-06-13
DE50112623D1 (en) 2007-07-26
DE20020783U1 (en) 2002-05-02
ATE364450T1 (en) 2007-07-15

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