EP2456567B1 - Vorrichtung zur ausgabe von flüssigkeitsstrahlen ohne drehkupplung - Google Patents

Vorrichtung zur ausgabe von flüssigkeitsstrahlen ohne drehkupplung Download PDF

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Publication number
EP2456567B1
EP2456567B1 EP10745314.4A EP10745314A EP2456567B1 EP 2456567 B1 EP2456567 B1 EP 2456567B1 EP 10745314 A EP10745314 A EP 10745314A EP 2456567 B1 EP2456567 B1 EP 2456567B1
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EP
European Patent Office
Prior art keywords
pipeline
pinion
fluid
anchoring means
axis
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EP10745314.4A
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English (en)
French (fr)
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EP2456567A1 (de
Inventor
Jacques Quintard
Frédéric Richard
Charles Truchot
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LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Publication of EP2456567A1 publication Critical patent/EP2456567A1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0421—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with rotating spray heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/14—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits
    • B05B15/652—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits whereby the jet can be oriented
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/003—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods using material which dissolves or changes phase after the treatment, e.g. ice, CO2
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
    • B24C3/04—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other stationary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0431—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with spray heads moved by robots or articulated arms, e.g. for applying liquid or other fluent material to three-dimensional [3D] surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing

Definitions

  • the invention relates to a device and a method for working by jets of cryogenic fluid, in particular liquid nitrogen, under high pressure, in particular surface treatment, pickling or scouring, of coated or uncoated materials, such as metals, concrete, wood, polymers, ceramics and plastics or any other type of material.
  • the surface treatment of coated or uncoated materials is essentially by sanding, by projection of ultra high pressure water (UHP), sander, jackhammer , at the shredder or by chemical means.
  • UHP ultra high pressure water
  • cryogenic jets under very high pressure are based on the use of cryogenic jets under very high pressure as proposed by the documents US Patent 7,310,955 and US Patent 7,316,363 .
  • one or more jets of liquid nitrogen are used at a pressure of 1000 to 4000 bar and at a cryogenic temperature of, for example, between -100 and -200 ° C., typically about -140 and -160 ° C., which are distributed by a rotating nozzle tool.
  • this nozzle holder tool is attached to the end of a cryogenic fluid supply line which supplies the tool with cryogenic fluid.
  • the pipe and the tool are then given a rotary movement about the axis of the pipe by a drive system with gears or belts driven by a motor.
  • the dynamic seal of the rotary system is usually provided by a rotating cylinder gasket, typically Tivar®, arranged around the pipe.
  • a rotating cylinder gasket typically Tivar®
  • this cylindrical joint is traversed longitudinally by a bronze piece and surrounded for a solid piece of stainless steel.
  • the document US Patent 4,369,850 describes a device provided with a nozzle for dispensing water under pressure arranged at the downstream end of a water pipe, itself arranged in a rotary cylindrical housing rotated by a motor via a transmission mechanism to strap and pulleys, in which the water pipe is flexible and bent so as to be able to distribute a jet of water in a circular path, so as to make holes in the ground, that is to say the earth or the like.
  • this device is not completely satisfactory because it does not make it possible to vary the surface impacted by the jet, at a given distance from the nozzle, which proves to be a significant disadvantage in certain applications, particularly in stripping or surface peeling, especially of concrete.
  • the problem to be solved is to propose a device for distributing cryogenic fluid, in particular liquid nitrogen, which is reliable, that is to say with which not only the problems related to the wear of the leaks do not exist, so as to overcome the aforementioned drawbacks and which also makes it possible to vary the surface treated by the or the jets of nitrogen at a given distance from the nozzle, especially when it is used in pickling or concrete peeling.
  • the invention also relates to the use of a device according to the invention for distributing, by means of one or more nozzles, a fluid in the form of one or more jets of fluid at a temperature below -140 ° C. and at a pressure of at least 1500 bar, preferably between 2000 and 5000 bar, to achieve, by means of at least one jet of pressurized fluid, a surface treatment, that is to say a stripping or a peeling of a material, in particular concrete.
  • the invention also relates to a method of pickling or peeling concrete by liquid nitrogen jet using a device for dispensing one or more jets of liquid nitrogen at a pressure of at least 1500 bar and at a temperature below -140 ° C, in particular a device according to the invention, comprising a supply line of liquid nitrogen supplying one or more liquid nitrogen distribution nozzles arranged at the downstream end of said pipeline, and a motor cooperating with the nitrogen supply line fluid via a rotary transmission shaft and a transmission mechanism, wherein the liquid nitrogen supply line comprises an upstream portion of first axis XX and a downstream portion of second axis YY, the first and second axes XX, YY forming between them an angle ⁇ of between 5 and 50 °, the downstream portion of second axis YY carrying the downstream end of the pipe with the one or more liquid nitrogen distribution nozzles, and the mechanism of transmission comprises moving means acting on said downstream portion of pipe to give it a determined movement, characterized in that the transmission mechanism comprises a pinion-
  • the method of the invention can be implemented manually, that is to say by an operator, or automatically or automatically, that is to say by a machine or a robot.
  • the Figure 1 illustrates the principle of a fluid jet distribution device, preferably a cryogenic temperature fluid, and high pressure according to the present invention.
  • This device comprises a fluid supply pipe 7, such as a stainless steel tube, supplying one or more fluid distribution nozzles arranged at the downstream end of said pipe 7.
  • the nozzles are carried by a door tool -buses 5.
  • the fluid to be dispensed is a fluid at cryogenic temperature and at high pressure, in particular liquid nitrogen at a pressure between 1000 and 4000 bar and a temperature between -140 and -200 ° C.
  • the fluid emanating from a source of fluid (not shown), such as a compressor, a tank, a heat exchanger, a feed line, a gas cylinder or the like, supplying the upstream end of the pipe 7 of fluid.
  • the fluid supply pipe 7 of the fluid distribution device cooperates with a motor 1 via a rotary transmission axis 2 and a transmission mechanism 4a, 4b, which will be detailed below.
  • the pipe 7 for supplying fluid comprises, in turn, an upstream portion 7a of first axis XX and a downstream portion 7b of second axis YY forming between them an angle ⁇ of between 5 and 50 °, typically between 10 and 40 ° preferably of the order of 20 to 30 °.
  • the downstream portion 7b carries the downstream end of the pipe 7 where are arranged the fluid distribution nozzle or nozzles, for example on a nozzle holder tool.
  • the transmission mechanism 4a, 4b comprises moving means acting on the downstream pipe portion 7b so as to give it a determined movement, of any nature whatsoever, in particular a rotational movement or rotation. oscillation.
  • rotation movement we will understand movement describing a circle, an ellipse, for example.
  • the choice of the design of room 4b will determine the type of movement chosen.
  • the motor 1 cooperating with the pipe 7 for supplying fluid via its rotary transmission axis 2 and the transmission mechanism 4a, 4b to which the transmission axis 2 transmits its rotational movement.
  • the engine is a pneumatic, electric, gasoline engine or any other type of engine.
  • the transmission mechanism 4a, 4b comprises a carrier pinion 4b rotatable about an axis of rotation located centrally of said carrier pinion 4b, and the cryogenic fluid supply pipe 7 being arranged in an ex-centered manner through said carrier pinion 4b.
  • the axis of the pipe 7 is the axis of the carrier pinion 4b are not confused.
  • the pipe 7 is thus arranged in a passage or orifice 10 formed through the body of the carrier pinion 4b, which passage is located within the disk that forms the pinion-carrier 4b, excluding the center of said disk.
  • the passage for the pipe 7 is located at least 1 mm from the center of the pinion, that is to say the axis of said pinion-carrier 4b.
  • a pinion drive means 4a such as a motor pinion or a belt, cooperates with the carrier pinion 4b so as to drive said pinion-carrier 4b in rotation. More specifically, the transmission shaft 2, driven by the motor 1, cooperates with the pinion drive means 4a, and the pinion drive means 4a itself engages with said pinion-carrier 4b so as to transmit , via the gear drive means 4a, the rotational movement of the transmission shaft 2 to the carrier pinion 4b and thus obtain a movement, preferably circular, of the fluid distribution nozzle or nozzles arranged at the downstream end of said pipe 7, that is to say arranged on the tool 5 nozzle holder used to distribute the jets 6 of high pressure fluid.
  • a gearbox 3 forming a protective housing and into which penetrates the transmission axis and which houses the transmission mechanism 4a, 4b.
  • the pinion 4b is held in place by a set of pads or by bearings of any type, for example with needles or balls, preferably balls.
  • the carrier pinion 4b is held by sprocket holding means 9 comprising one or more skids or bearings, in particular a ball bearing, as schematized in FIG. Figure 4 .
  • elements 9, such as pads, radial bearings or pins, are provided to maintain a good rotation of the carrier pinion 4b.
  • the carrier pinion 4b is grooved to accommodate the elements 9.
  • the carrier pinion 4b is not held on its axis.
  • the pinion 4b is held by devices 9 which are positioned on the pinion 4b at a distance R from the axis of rotation of the pinion 4b greater than the distance r between the axis of rotation and the orifice 10, as illustrated in FIG. Figure 3 .
  • the fluid supply pipe 7 cooperates with anchoring means 8, such as a gland, a flange, a slotted nut, an elastic cone, a rack-and-pinion system or any other suitable mechanical device, making it possible to maintain the pipe 7 in position relative to the rest of the jet distribution device, said anchoring means 8 being arranged on the pipe 7 upstream of the carrier pinion 4b, that is to say that the carrier pinion 4b is located between the anchoring means 8 and the end of the pipe 7 carrying the nozzle or nozzles.
  • anchoring means 8 such as a gland, a flange, a slotted nut, an elastic cone, a rack-and-pinion system or any other suitable mechanical device
  • the pipe 7 is, on the one hand, kept fixed or approximately fixed at and because of the anchoring means 8, and, on the other hand, has a downstream end 7b provided with the nozzles which is movable and describes a given movement, preferably circular, when the motor 1 drives the transmission axis 2, the motor pinion 4a connected to the axis 2, and the carrier pinion 4b, which itself causes the tube 7 in a determined path, in particular circular or the like.
  • the anchoring point 8 is a mechanical element making it possible to block or unblock the slippage of the pipe 7 through the device and finally through the passage 10.
  • the anchoring point thus makes it possible to set, for the time of the implementation of the method, the length Lo, therefore the diameter or the like of the circular or other trajectory described by the nozzle, knowing that the distance from the anchor point 8 to pinion 4b is fixed.
  • modifying the length Lo is particularly advantageous for varying the radius of the circular trajectory Ro described by the nozzle (s) for delivering high pressure fluid jets as illustrated in FIG. Figure 3 .
  • the mechanical element of the anchor point can be loosened easily by the user, for example by using a suitable tool, if he wants to adjust or adjust the length Lo.
  • the pipe 7 In the case where the pipe 7 is positioned on a displacement machine or on a robot, it may be difficult or impractical to slide the tube 7 inside the device. It is therefore useful for the pipe 7 to be divided into two parts connected by a very high pressure static coupling 7c positioned upstream of the anchoring point 8. This makes it easy to change this part of the tube between 7c and the nozzle holder tool 5, by a tube of suitable length to adjust Lo to the desired length, without having to move or modify the entire tube 7.
  • a stainless steel tube is preferably used as pipe 7, and of internal and external diameters as given in Table II below.
  • Table II a stainless steel tube is preferably used as pipe 7, and of internal and external diameters as given in Table II below.
  • the 14.8 mm diameter tube is too rigid to be effectively used. From there, typically, a high pressure stainless steel tube 316 (up to about 4000 bar) with an outside diameter of about 6.4 mm is used.
  • this tube In order to further flexibilise the tube, it is possible to give this tube a lyre or pigtail shape, as shown in FIG. figure 5 , or use a bellows system.
  • a ball bearing system or the like may advantageously be placed around the hose 7.
  • a device according to the invention comprising a stainless steel tube 6.4 mm external radius, supplied with liquid nitrogen at a temperature of -155 ° C and a pressure of 3500 bar, was tested without breaking in fatigue over 2,000,000 cycles at a very high speed of about 1100 rpm.
  • the tube will not be able to break by fatigue, whatever the number of cycles performed, and particularly greater than 2,000,000. The results obtained are therefore quite satisfactory. and the device works perfectly.
  • a nozzle holder equipped with two nozzles used with the system described in the document US Patent 7,316,363 gives the two nozzles concentric circular paths of different radii, as illustrated in Figure 6 , while the same nozzle holder equipped with the same two nozzles gives the nozzles circular trajectories of identical radii Ro but shifted, as shown schematically in FIG. Figure 7 .
  • Circles ( Figure 7 ) described by the jets of liquid nitrogen will have a larger diameter as the parameters Lo and ⁇ will have high values
  • the yield will then be more important because the surface described will be larger.
  • the device of the invention can be used for a manual application, as shown on the figure 8 , or automatic or robotic as shown on the figure 9 .
  • the figure 8 schematically an example of a manual tool comprising a pneumatic motor 1 with a handle 11 of a trigger 12 and a compressed air inlet pipe 13, while the figure 9 shows an example of an automatic tool, with an electric motor 1, mounted on a robot 14.
  • the automatic tool can also be used with a mobile device comprising one or more axes of displacement.
  • the device of the present invention is applicable in any operation or heat treatment process requiring the implementation of a rotation of fluid jets, in particular cryogenic fluids, such as surface treatment, pickling or peeling of a material, such as metals, concrete, stone, plastics, wood, ceramics ...

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Spray Control Apparatus (AREA)
  • Manipulator (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Claims (14)

  1. Vorrichtung zur Ausgabe eines oder mehrerer Fluidstrahlen (6), umfassend eine Rohrleitung (7) für die Zuleitung von Fluid, die eine oder mehrere Düsen (5) zur Ausgabe von Fluid versorgt, die am stromabwärtigen Ende der Rohrleitung (7) vorgesehen sind, und einen Motor (1), der mit der Rohrleitung (7) für die Zuleitung von Fluid mit Hilfe einer Drehgetriebeachse (2) und einem Getriebemechanismus (4a, 4b) zusammenwirkt, wobei
    - die Rohrleitung (7) für die Zuleitung von Fluid einen stromaufwärtigen Teil (7a) mit einer ersten Achse (XX) und einen stromabwärtigen Teil (7b) mit einer zweiten Achse (YY) umfasst, wobei die erste und zweite Achse (XX, YY) zwischen sich einen Winkel (α) zwischen 5 und 50° bilden,
    - der stromabwärtige Teil (7b) der zweiten Achse (YY) das stromabwärtige Ende der Rohrleitung (7) mit der oder den Düsen zur Ausgabe von Fluid trägt,
    und der Getriebemechanismus (4a, 4b) Bewegungsmittel umfasst, die auf den stromabwärtigen Teil (7b) der Rohrleitung einwirken, um ihm eine bestimmte Bewegung zu verleihen,
    dadurch gekennzeichnet, dass
    - der Getriebemechanismus (4a, 4b) ein Abtriebsritzel (4b) umfasst, das um eine Drehachse drehbeweglich ist, die sich in der Mitte des Abtriebsritzels (4b) befindet, wobei die Rohrleitung (7) für die Zuleitung von Fluid exzentrisch und frei durch das Abtriebsritzel (4b) hindurch vorgesehen ist, und ferner ein Ritzelantriebsmittel (4a), das mit dem Abtriebsritzel (4b) zusammenwirkt,
    - und dass die Rohrleitung für die Zuleitung von Fluid mit einem Verankerungsmittel (8) zusammenwirkt, das an der Rohrleitung stromaufwärts des Abtriebsritzels (4b) vorgesehen ist, wobei das Verankerungsmittel (8) das gesamte oder einen Teil eines Einstellsystems bildet zum Wählen oder Einstellen der Länge der Rohrleitung für die Zuleitung von Fluid, gemessen zwischen dem Verankerungsmittel (8) und dem stromabwärtigen Ende der Rohrleitung (7).
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Verankerungsmittel (8) dafür eingerichtet und angepasst ist, mit der Rohrleitung (7) verbunden oder von ihr gelöst zu werden, um die Rohrleitung (7) zu halten, wenn das Verankerungsmittel mit der Rohrleitung (7) verbunden ist, oder die Rohrleitung freizugeben, wenn das Verankerungsmittel von der Rohrleitung (7) gelöst ist, und so eine Einstellung der Länge der Rohrleitung (7) zu gestatten, wobei die Länge zwischen dem Verankerungsmittel (8) und dem stromabwärtigen Ende der Rohrleitung (7) gemessen wird.
  3. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die erste und zweite Achse (XX, YY) zwischen sich einen Winkel (α) bilden, der zwischen 10 und 40°, vorzugsweise in der Größenordnung von 20 bis 30° liegt.
  4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Getriebeachse (2) mit dem Ritzelantriebsmittel (4a) zusammenwirkt und das Ritzelantriebsmittel (4a) mit dem Abtriebsritzel (4b) zusammenwirkt, um über das Ritzelantriebsmittel (4a) die Drehbewegung der Getriebeachse (2) auf das Abtriebsritzel (4b) zu übertragen und so eine Kreisbewegung der Düsen zur Ausgabe von Fluid zu erhalten, die am stromabwärtigen Ende der Rohrleitung (7) angeordnet sind.
  5. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Getriebemechanismus (4a, 4b) in einem Getriebegehäuse (3) angeordnet ist, in dessen Inneres die Getriebeachse (2) eindringt.
  6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Abtriebsritzel (4b) durch Ritzelhaltemittel gehalten wird, die einen oder mehrere Gleitschuhe oder Lager umfassen, insbesondere ein Kugellager.
  7. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Rohrleitung (7) in einem Durchgang (10) angeordnet ist, der durch den Körper des Abtriebsritzels (4b) hindurch gebildet ist, wobei der Durchgang (10) im Inneren der Scheibe befindlich ist, die das Abtriebsritzel (4b) bildet, unter Ausschluss der Mitte der Scheibe.
  8. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass Halteelemente (9) vorgesehen sind, um das Abtriebsritzel (4b) zu halten, wobei die Halteelemente (9) an dem Ritzel (4b) in einem Abstand R von der Drehachse des Ritzels (4b) angeordnet sind, der größer ist als der Abstand r zwischen der Drehachse und der Öffnung (10).
  9. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Halteelemente (9) Gleitschuhe, Radiallager oder Zapfen sind, und/oder dadurch, dass die Ritzelantriebsmittel (4a) ein Ritzel oder ein Riemen sind.
  10. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Verankerungsmittel (8) eine Festspannvorrichtung umfasst, bevorzugt einen Flansch, eine Stopfbuchse, eine geschlitzte Nuss, einen Federkegel oder ein Ritzel-Zahnstangensystem.
  11. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Rohrleitung (7) ein Rohr aus rostfreiem Stahl ist, vorzugsweise ein flexibles Rohr.
  12. Verwendung einer Vorrichtung nach einem der vorhergehenden Ansprüche, um mit Hilfe einer oder mehrerer Düsen ein Fluid in Form eines oder mehrerer Fluidstrahlen mit einer Temperatur unter -140 °C und mit einem Druck von wenigstens 1 500 bar auszugeben, um mit Hilfe wenigstens eines unter Druck stehenden Fluidstrahls eine Oberflächenbehandlung, ein Abätzen oder ein Schälen eines Materials durchzuführen.
  13. Verfahren zum Abätzen oder Schälen von Beton durch Stickstoffstrahl unter Verwendung einer Vorrichtung zur Ausgabe eines oder mehrerer Strahlen (6) flüssigen Stickstoffs mit einem Druck von wenigstens 1 500 bar und mit einer Temperatur unter -140 °C, umfassend eine Rohrleitung (7) für die Zuleitung von flüssigem Stickstoff, die eine oder mehrere Düsen (5) zur Ausgabe von flüssigem Stickstoff versorgt, die am stromabwärtigen Ende der Rohrleitung (7) vorgesehen sind, und einen Motor (1), der mit der Rohrleitung (7) für die Zuleitung von flüssigem Stickstoff mit Hilfe einer Drehgetriebeachse (2) und einem Getriebemechanismus (4a, 4b) zusammenwirkt, wobei die Rohrleitung (7) für die Zuleitung von flüssigem Stickstoff einen stromaufwärtigen Teil (7a) mit einer ersten Achse (XX) und einen stromabwärtigen Teil (7b) mit einer zweiten Achse (YY) umfasst, wobei die erste und zweite Achse (XX, YY) zwischen sich einen Winkel (α) zwischen 5 und 50° bilden, wobei der stromabwärtige Teil (7b) mit der zweiten Achse (YY) das stromabwärtige Ende der Rohrleitung (7) mit der oder den Düsen zur Ausgabe von flüssigem Stickstoff trägt, und der Getriebemechanismus (4a, 4b) Bewegungsmittel umfasst, die auf den stromabwärtigen Teil (7b) der Rohrleitung einwirken, um ihm eine bestimmte Bewegung zu verleihen,
    dadurch gekennzeichnet, dass
    der Getriebemechanismus (4a, 4b) ein Abtriebsritzel (4b) umfasst, das um eine Drehachse drehbeweglich ist, die sich in der Mitte des Abtriebsritzels (4b) befindet, wobei die Rohrleitung (7) für die Zuleitung von flüssigem Stickstoff exzentrisch und frei durch das Abtriebsritzel (4b) hindurch vorgesehen ist, und ferner ein Ritzelantriebsmittel (4a), das mit dem Abtriebsritzel (4b) zusammenwirkt,
    und dass
    die Rohrleitung für die Zuleitung von Fluid mit einem Verankerungsmittel (8) zusammenwirkt, das an der Rohrleitung stromaufwärts des Abtriebsritzels (4b) angeordnet ist, wobei das Verankerungsmittel (8) das gesamte oder einen Teil eines Einstellsystems bildet, und dass die Länge der Rohrleitung für die Zuleitung von Fluid, gemessen zwischen dem Verankerungsmittel (8) und dem stromabwärtigen Ende der Rohrleitung (7), gewählt oder angepasst wird, indem auf das Einstellsystem eingewirkt wird.
  14. Verfahren nach Anspruch 13, dadurch gekennzeichnet, dass auf das Verankerungsmittel (8) des Einstellsystems eingewirkt wird, um es mit der Rohrleitung (7) zu verbinden bzw. von ihr zu lösen, um die Rohrleitung (7) zu halten bzw. die Rohrleitung freizugeben und so eine Einstellung der Länge der Rohrleitung (7) zu gestatten.
EP10745314.4A 2009-07-21 2010-06-24 Vorrichtung zur ausgabe von flüssigkeitsstrahlen ohne drehkupplung Active EP2456567B1 (de)

Applications Claiming Priority (2)

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FR0955058A FR2948301B1 (fr) 2009-07-21 2009-07-21 Dispositif de distribution de jets de fluide sans joint tournant
PCT/FR2010/051291 WO2011010030A1 (fr) 2009-07-21 2010-06-24 Dispositif de distribution de jets de fluide sans joint tournant

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EP2456567B1 true EP2456567B1 (de) 2015-10-14

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CN102470385A (zh) 2012-05-23
WO2011010030A1 (fr) 2011-01-27
RU2518960C2 (ru) 2014-06-10
US20120222708A1 (en) 2012-09-06
RU2012106028A (ru) 2013-08-27
FR2948301A1 (fr) 2011-01-28
FR2948301B1 (fr) 2013-01-11
JP2012533422A (ja) 2012-12-27
US9914142B2 (en) 2018-03-13
CN102470385B (zh) 2015-06-03
JP5738858B2 (ja) 2015-06-24
EP2456567A1 (de) 2012-05-30

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