Abrasive suspension machining device for machining the interior of pipes or bores

Abstract

The invention relates to an abrasive suspension machining device for machining the interior of pipes or bores (2), having a high-pressure suspension supply device (30), at least one nozzle head (12) for discharging at least one high-pressure suspension jet (14), which is connected to the high-pressure suspension supply device (30) via a high-pressure line (16), and at least one drive device (20) for moving the nozzle head (12), which is arranged spaced apart from the nozzle head (12) and is coupled to the high-pressure line (16) for its movement in such a way that the nozzle head (12) can be moved in a bore (2) by movement of the high-pressure line (16). The invention also relates to a method for machining a pipe or a bore (2).

Description

[0001] Applicant: ANT Applied New Technologies AG

[0002] Title: Abrasive suspension processing device for

[0003] Internal machining of pipes or bores

[0004] Our reference: ANTP 3824 WO

[0005] Description

[0006]

[0001] The invention relates to an abrasive suspension processing device for internal processing of pipes or bores, in particular to remove deposits or blockages inside the pipes or bores or to create openings.

[0007] 5

[0002] When drilling for the extraction of fossil fuels such as oil or natural gas, the problem arises that these boreholes may be intentionally or unintentionally blocked. In particular, abandoned boreholes are blocked by inserted plugs. There are cases in which it is intentional to remove such plugs from the boreholes

[0008] 10 to remove again. Abrasive suspension machining systems are known for this purpose, in which abrasive suspension jets are applied via a nozzle head, with which the blockages inside the bore or pipe are removed. Such a device is known, for example, from WO 2015 / 124182 or WO 2018 / 215074 Al. The nozzle heads known from the prior art have a complex design with rotary and feed drives.

[0009]

[0003] It is an object of the invention to provide an improved abrasive suspension processing device and a corresponding method, which are robustly constructed and offer a large and reliable

[0010] 20 drilling and removal performance guaranteed with high operational reliability.

[0011] Patent Attorneys Hemmer Lindfeld Frese ANTP 3824 WO, 09 / 09 / 2025

[0004] This problem is solved by an abrasive suspension processing device with the features specified in claim 1 and a method with the features specified in claim 12. Preferred embodiments are described in the associated sub-

[0012] 5 claims, the following description and the attached figures.

[0013]

[0005] The abrasive suspension machining device according to the invention is designed for internal machining of pipes or bores, in particular for removing deposits and blockages or for creating openings (e.g., by sidetracking, window erosion, and / or slot erosion) in pipes or bores in the field of oil or natural gas production. The machining device has a high-pressure suspension supply unit which delivers a suspension consisting of a liquid and an added abrasive,

[0014] 15 provides high pressure. High pressure is understood to mean a pressure greater than 200 bar, preferably greater than 300 bar. The processing device also has at least one nozzle head for dispensing at least one high-pressure suspension jet. The nozzle head has at least one nozzle which dispenses a high-pressure suspension jet.

[0015] 20 forms and is preferably directed in a defined direction when the nozzle head is inserted into a pipe, in which material is to be removed. For example, the nozzle can be directed forward or angled forward to the feed axis to remove material located in front of the nozzle head, for example, to remove a blockage in the pipe by material removal. The removed material is flushed away by the fluid of the suspension and can be conveyed to the surface through the bore. The nozzle head is connected to the high-pressure suspension supply system via a high-pressure line, through which the high-pressure suspension is supplied to the

[0016] The suspension is fed to the nozzle head at 30 degrees. This allows the suspension to reach the nozzle head.

[0017] Patent attorneys Hemmer Lindfeld Frese ANTP 3824 WO, 09 / 09 / 2025 Example: supplied from above the Earth's surface or the sea surface.

[0018]

[0006] In order to be able to move the nozzle head in the bore or the tube, the machining device has at least one drive element

[0019] 5 direction, which is arranged at a distance from the nozzle head. That is, in contrast to the prior art, the drive for the nozzle head is not arranged directly on the nozzle head. According to the invention, the drive device is instead coupled to the high-pressure line, so that the high-pressure line is first driven by the drive device.

[0020] 10 is moved and the high-pressure line, through its movement, moves the nozzle head. This means the movement of the high-pressure line is transferred to the nozzle head. This can occur over a very long length, so the drive unit can preferably be located at the end of the pipe or borehole, i.e., above the sea surface or the earth's surface. This allows the components of the drive unit to be located outside the borehole or pipe, so that they can be made larger and are easily accessible during operation. This allows the nozzle head to be designed more simply overall, resulting in a more reliable machining process.

[0021] 20 directions are created.

[0022]

[0007] In a first embodiment, the drive unit can include a rotary drive for rotating the high-pressure line, that is, for rotating the high-pressure line about its longitudinal axis. The nozzle head is rotatably connected to the high-pressure line, so that the nozzle head rotates together with the high-pressure line. This allows the nozzle assembly located in the nozzle head to be rotated, thereby moving the high-pressure jets exiting the nozzle head by rotation. This enables material removal over a larger area. The rotary drive for rotating the high-pressure line

[0023] 30 can, for example, be designed so that an entire reel or winding device for the high-pressure line is rotated on the surface.

[0024] Patent attorneys Hemmer Lindfeld Frese ANTP 3824 WO, 09 / 09 / 2025. Alternatively, the rotary drive can engage the high-pressure line with suitable power transmission means, for example, frictionally and / or positively, in order to rotate it about its longitudinal axis.

[0025]

[0008] The rotary drive is preferably designed such that it raises the height

[0026] 5. The pressure line can be rotated, and thus the nozzle head can be rotated at a speed between 0 and 200 rpm. The rotational speed can preferably be further varied, for example by a suitable control device for the rotary drive. When the rotational speed is 0 rpm, the rotary drive is stopped and the nozzle head can be operated without rotation. According to a further preferred embodiment of the rotary drive, the rotational speed of the high-pressure line generated by it is between 0 and 100 rpm, and according to another possible embodiment, between 0 and 50 rpm. With such a slow rotational speed, a sufficient

[0027] 15% casual material removal in front of the nozzle head can be achieved.

[0028]

[0009] The rotary drive can be designed to effect a rotary movement or rotation in a first and / or opposite second direction of rotation, that is, a rotation clockwise or counterclockwise. The direction of rotation can be changed via the rotary drive.

[0029] 20, for example by appropriate adjustment via a suitable control device. Such a rotation means that the rotary drive rotates the high-pressure line multiple times by 360° in the same direction during operation, preferably constantly or continuously. Alternatively or additionally, the rotary drive can be designed to perform an oscillating rotary motion. In the oscillating rotary motion, the rotary drive alternately changes the direction of rotation, whereby the generated rotation of the high-pressure line is preferably less than 360° in each direction of rotation. Such an oscillating rotary motion can be advantageous, for example, to achieve material removal in just one

[0030] to realize a 30 nem circumferential section in the borehole, for example to form an opening in the pipe wall (e.g. for sidetracking,

[0031] Patent attorneys Hemmer Lindfeld Frese ANTP 3824 WO, 09 / 09 / 2025 (window erosion and / or slot erosion). The nozzle head can, particularly for this purpose, have at least one nozzle directed at least partially in a radial direction, i.e., a nozzle whose emission direction or main emission direction is angled to the longitudinal or rotational direction.

[0032] The rotary drive is directed along the axis, preferably at an angle greater than 0° and less than 90°. The rotary drive can be designed such that the rotation can be switched between constant rotation and oscillating rotary motion via a control device. Furthermore, the rotation or swivel angle for an oscillating motion can be controlled or regulated via the control device and, in particular, be adjustable. The control device can also be designed to adjust the angular range around the longitudinal axis of the bore or tube in which at least one nozzle of the nozzle head moves in an oscillating motion and to control the oscillating motion.

[0033] 15. The system is designed to control or regulate the movement of at least one nozzle so that it moves over a predetermined angular range. This allows the processing of the pipe to take place at a defined circumferential position or within a defined circumferential area.

[0034]

[0010] In another possible embodiment, the rotary drive of the

[0035] 20 art is designed such that, during an ongoing rotary movement, it can apply an additional torque of between 0.1 and 10 kNm, preferably between 0.1 and 5 kNm. This means that the rotary drive is designed to initially generate sufficient torque to move or rotate the high-pressure line with the nozzle head in the bore or pipe at the set rotational speed. In other words, the rotary drive generates a torque large enough to overcome the frictional forces occurring in the bore or pipe. To ensure reliable material removal via the high-pressure suspension jet, it is therefore necessary

[0036] 30 is also preferred to be able to apply an additional torque in the aforementioned size range.

[0037] Patent Attorneys Hemmer Lindfeld Frese ANTP 3824 WO, 09 / 09 / 2025

[0011] In a further embodiment, the drive device also has a feed drive, which is preferably provided in addition to the described rotary drive. The feed drive is for linearly moving the high-pressure line and thus the nozzle head

[0038] 5 fes designed. The feed drive primarily serves to insert the high-pressure line with the nozzle head located at its front end into a bore or pipe. For this purpose, the feed drive is designed to advance a very long high-pressure line, for example, over several hundred meters. Furthermore

[0039] Furthermore, the feed drive is designed so that, during operation of the nozzle head, it can advance it at a suitable feed rate, which is adapted to the removal capacity of the nozzle head, in order to be able to follow the ongoing material removal.

[0040]

[0012] The feed drive is advantageously designed for operating the nozzle head such that it can advance the high-pressure line at a speed between 0 and 500 mm / min, more preferably between 0 and 200 mm / min or between 0 and 100 mm / min. These are preferred feed speeds for operating the nozzle head.

[0041] 20 nozzle head, that is, during continuous material removal by at least one exiting high-pressure suspension jet. When inserting the nozzle head into the pipe or bore and when withdrawing it from the pipe or bore, other feed rates, in particular higher feed rates, can be selected. It is possible to stop the nozzle head during material removal, so that a feed rate of 0 mm / min is set, for example, to be able to process difficult-to-remove material with the high-pressure suspension jet over a longer period of time. With the feed stopped, the nozzle head can, for example, be rotated via the rotary end.

[0042] The drive was turned further at 30.

[0043] Patent Attorneys Hemmer Lindfeld Frese ANTP 3824 WO, 09 / 09 / 2025

[0013] The feed drive is further preferably designed for linear forward and backward movement of the high-pressure line, wherein a feed or restoring force is preferably in a range of a maximum of 40,000 to 50,000 N. This enables, on the one hand, the insertion of the high-pressure

[0044] 5. Insertion and withdrawal of the high-pressure line into the bore. However, moving the high-pressure line back and forth can also be advantageous during machining while the nozzle head is in operation, for example, to shift the focus of a nozzle arrangement in the nozzle head in a linear direction during material removal or to facilitate the flushing out of removed material during machining. Furthermore, the feed drive can be designed to enable a linear oscillating movement of the high-pressure line and the nozzle head. In a particular embodiment, this, in combination with a nozzle that is at least partially radially oriented, enables, as

[0045] 15. As described above, machining over a specific section in the longitudinal direction of the pipe, which can, for example, serve to form an opening in the pipe wall (e.g., for sidetracking, window erosion, and / or slot erosion). In a particular embodiment, a feed drive and a rotary drive can be incorporated.

[0046] 20, at least one of which is designed such that an oscillating rotary motion, as described above, is superimposed with an oscillating linear motion, as described previously. Together with at least one at least partially radially directed nozzle, a limited, defined section of the pipe wall can thus be processed, for example, to create an opening in it.

[0047]

[0014] The drive device preferably has a control device by which the described feed and rotary movements are controlled or regulated and adjusted in the desired manner.

[0048] 30 can, especially preferably based on captured sensor data.

[0049] Patent Attorneys Hemmer Lindfeld Frese ANTP 3824 WO, 09 / 09 / 2025

[0015] According to a further embodiment, the high-pressure suspension supply device comprises a high-pressure pump and a mixing device for adding abrasive material to a liquid or a carrier liquid. This mixing device can be located upstream or

[0050] 5. The mixing device should be arranged downstream of the high-pressure pump. This means that, with an upstream arrangement, a previously formed suspension is brought to the desired high pressure by the high-pressure pump. With a downstream arrangement of the mixing device, the liquid is first brought to the desired pressure level by the high-pressure pump.

[0051] 10 brought and then the abrasive is added to the high-pressure liquid, for example by passing the high-pressure liquid through a container containing the abrasive.

[0052]

[0016] As described, the high-pressure line can be very long to enable machining at great depths or over a long length of pipe. Thus, the high-pressure line can have a feed length greater than 20 meters, preferably greater than 200 meters, and more preferably greater than 500 meters.

[0053]

[0017] In a further preferred embodiment of the invention, the drive device has at least one sensor device or is equipped with

[0054] 20 connected to a sensor device. Such a sensor device could be located at a distance from the nozzle head in the area of ​​the drive unit, but also at another suitable location. Alternatively or additionally, a sensor device could also be arranged on or in the nozzle head to record measured values ​​directly at the nozzle head or in the working area of ​​at least one nozzle. Such measured values ​​could be, for example, pressure values, position or acceleration values ​​and / or structure-borne sound signals. One or more sensor devices make it possible, for example, to record process parameters, possibly digitize and evaluate them, in particular to evaluate them live. Furthermore, it is possible to

[0055] 30. Example: A control unit of the drive unit with which at least one sensor unit is connected to a signal. The sensor unit is

[0056] Patent attorneys Hemmer Lindfeld Frese ANTP 3824 WO, 09 / 09 / 2025, for example, are trained to detect a feed and / or restoring force through the tool engagement, a torque, a feed path and / or a rotation angle of the high-pressure line and, if necessary, to evaluate it in a suitable manner in order to control the removal or erosion process.

[0057] 5. to monitor and control or regulate. This data can be used to control or regulate the feed motion and the rotational movement via the described drive device. For example, a control device can be designed to change the direction of rotation, retract the nozzle head, or similar actions when a maximum torque is exceeded. By monitoring the feed force, it can also be determined, for example, that no desired material removal is achieved by the high-pressure suspension jet in front of the nozzle head and that the nozzle head is instead resting on the material to be removed. If such a condition is detected, the feed-

[0058] The feed force can be stopped at 15 N and the nozzle head can be retracted if necessary. The maximum feed force is, for example, 50,000 or 40,000 N. If such a feed force is exceeded, it can be concluded that the nozzle head is hitting the material being removed and appropriate measures can be taken.

[0059] 20 men can be initiated, such as stopping the feed or reversing the feed direction. Alternatively or additionally, a detected torque could also be considered. This is preferably done in a specially designed control unit, which controls the drive unit and is signal-connected to the sensor unit. The control unit can be designed to automate the described process steps or to display certain operating states to an operator, allowing the operator to then adjust the control of the drive unit as desired using suitable adjustment means on the control unit.

[0060] 30 ways can change. If the sensor device for detecting the feed movement and / or the rotary movement of the high-pressure line-

[0061] Patent attorneys Hemmer Lindfeld Frese ANTP 3824 WO, 09 / 09 / 2025 tung and / or of the nozzle head, the sensor device of the control unit, which controls the drives to generate the feed and / or rotary motion, can receive position signals relating to the linear position and / or angular position of the nozzle head.

[0062] 5 mounting points, on the basis of which the control unit controls or regulates the drives.

[0063]

[0018] In addition to the described processing device, the invention relates to a method for processing a pipe or bore using at least one high-pressure abrasive suspension jet. The method can preferably be carried out using the abrasive suspension processing device described above. It should be understood that the process sequences described above with reference to the processing device also represent preferred embodiments of the method according to the invention.

[0064] 15. In the inventive method, at least one high-pressure abrasive suspension jet is applied inside the pipe or bore from a nozzle head, in particular from at least one nozzle arranged in the nozzle head. During processing, the nozzle head is connected to the pipe or bore via a high-pressure line.

[0065] 20. The pipe or bore is moved. When dispensing the suspension jet, the high-pressure line is preferably moved or advanced linearly in the direction of extension of the pipe or bore. Alternatively or additionally, the high-pressure line can be rotated to rotate the nozzle head during the dispensing of the suspension jet, so that it can move over a larger area to remove material from a larger surface.

[0066]

[0019] The nozzle head can be designed to have at least one nozzle directed forward or partially forward, i.e., in the feed direction. Alternatively or additionally, nozzles can be arranged

[0067] 30 net be, which the suspension jet in relation to the feed direction-

[0068] Patent attorneys Hemmer Lindfeld Frese ANTP 3824 WO, 09 / 09 / 2025 tung or longitudinal axis of the tube at least partially directed radially outwards in order to be able to machine the wall of the bore. Furthermore, alternatively or additionally, rearward-facing nozzles, i.e., nozzles directed against the feed direction, could be used.

[0069] 5 may be provided, for example to assist in flushing away the debris.

[0070]

[0020] The invention is described below by way of example with reference to the accompanying figures. These show:

[0071] Figure 1 shows an application example for an abra according to the invention-

[0072] 10 siv-suspension processing device,

[0073] Figure 2 shows an abrasive suspension processing device according to the invention, and

[0074] Figure 3 schematically shows the formation of a window in a pipe wall using an abrasive suspension machining device.

[0075]

[0021] An abrasive suspension processing device can, for example, be used to process a deep-sea borehole, such as those used in oil production. Figure 1 schematically shows such an application example. In this example, a production pipe 2, which

[0076] 20, extending from the seabed 4 into the depths, opens a closure 6. To remove the material 6 or the closure 6 from the conveying pipe 2, an abrasive suspension processing device is used. This is deployed from a conveying platform 10 located above the water surface 8. Instead of a conveying platform

[0077] 25 10 Another base or platform, for example a ship, could also be used. The processing device according to the invention could also be used on land. The abrasive suspension processing device has a nozzle head 12, which at least

[0078] Patent attorneys Hemmer Lindfeld Frese ANTP 3824 WO, 09 / 09 / 2025, a nozzle, in the example shown here several nozzles, has from which high-pressure suspension jets 14 are emitted. In this example, the nozzles are directed such that the high-pressure suspension jets 14 are directed forward onto the material 6 to be removed.

[0079] 5 are directed. However, there could also be, for example, only one nozzle whose main jet direction is directed forward in the feed direction or at an angle to the feed direction, for example, completely or partially radially. The high-pressure suspension supply to the nozzle head 12 is provided by a high-pressure line 16 which extends from the conveying platform 10 to the nozzle head 12. A suspension supply device 30 is arranged on the conveying platform 10, as described in more detail below. In this example, the dispensed liquid and the removed material 6 are discharged via a return line 18. However, the discharge could also be direct.

[0080] 15 through the free space between the high pressure line 16 and the delivery pipe 2, as shown in Figure 2.

[0081]

[0022] Figure 2 schematically shows an example of an abrasive suspension processing device according to the invention. In the example shown in Figure 2, the nozzle head 12 also has radially and rearwardly directed

[0082] 20 nozzles are arranged so that high-pressure suspension jets 14 are directed in different directions. It is understood that different nozzle arrangements can be used depending on where in the pipe 2 material is to be removed. In the example shown in Figure 2, no return line 18 is shown. According to the invention, the nozzle head 12 is moved in the pipe 2 when the high-pressure suspension jets 14 are applied. For this purpose, a drive device 20 is arranged on a handling platform 10, for example the conveying platform 10, which serves to move the high-pressure line 16 linearly along its longitudinal axis X in a direction of movement 22.

[0083] to move 30 back. For this purpose, the drive unit 20 has a suitable feed drive, which, for example, is frictionally engaged with the

[0084] Patent attorneys Hemmer Lindfeld Frese ANTP 3824 WO, 09 / 09 / 2025 High-pressure line 16 can be coupled to its linear movement. The drive unit 20 also has a rotary drive, which is designed to rotate the high-pressure line 16 in a direction of rotation 24 about the longitudinal axis X. This can be achieved by a suitable rotary drive,

[0085] 5 which engages with the high-pressure line 16, for example, by force-locking and / or positive locking. The drive device 20 can be designed such that it causes an oscillating movement of the high-pressure line 16 and the nozzle head 12 connected to it in the linear direction of movement 22 and / or in the direction of rotation.

[0086] 10 An oscillating rotary movement in the direction of rotation 24 preferably takes place in a rotation angle of less than 360°.

[0087]

[0023] The nozzle head 12, which is connected to the high-pressure line 16, is also moved in the conveying tube 2 during processing via the feed and rotation of the high-pressure line 16. This means, for example, that it is advanced and simultaneously rotated, so that the high-pressure suspension jets 14 are moved over the material to be removed and a larger area can be processed. The movement is controlled by a control unit 26, which controls the drive unit 20. The drive unit 20 also includes a

[0088] 20 Sensor device 28 is arranged, which is signal-connected to the control device 26. The sensor device 28 detects the torque applied in the direction of rotation 24 and the feed force applied in the feed direction 22. If the applied feed force exceeds a predetermined limit, this may indicate that the nozzle head 12 is contacting the material 6 to be removed during the feed motion. The feed motion can then be stopped, and, for example, an attempt can be made to remove the material without further feed. If the torque exceeds a predetermined value, the control device can

[0089] 30 direction 26, for example, the direction of rotation can be changed, or the drive unit 20 can be controlled so that the nozzle head 12

[0090] Patent attorneys Hemmer Lindfeld Frese ANTP 3824 WO, 09 / 09 / 2025, initially move a short distance backwards. Other control variants are also possible based on such sensor signals. Additionally or alternatively, the feed length and the angle of rotation could also be detected by the sensor device 28. Alternatively or to

[0091] 5 In addition to the sensor device 28, a sensor device 29 could also be arranged on or in the nozzle head 12 to acquire measured values ​​at the nozzle head. These measured values ​​are preferably transmitted to the control device 26 via a suitable signal connection (not shown here), so that the control device 26 can control

[0092] 10 and / or control based on or taking into account the measured values ​​of the sensor device 29.

[0093]

[0024] The suspension is supplied to the high-pressure line 16 in the usual manner. For example, a high-pressure suspension supply device 30 can be connected to the end of the high-pressure line 16 that is opposite the nozzle head 12. A coupling or rotary feedthrough 32 can be arranged there, for example. The high-pressure suspension supply device 30 has a high-pressure pump 34, which pressurizes a suspension, for example, to a pressure of 200 bar to 300 bar or even higher.

[0094] 20 Upstream of the high-pressure pump 34 is a mixing device 36 in which a liquid stream 38 is mixed with an abrasive 40 to form a suspension. The liquid 38 can be water with or without additives, or any other suitable liquid.

[0095]

[0025] Figure 3 schematically shows how a recess or window 42 can be created in the wall of a pipe or conveying pipe 2 using an abrasive suspension processing device as described above. In this embodiment, the nozzle head 12 has at least one nozzle which is radially directed

[0096] 30 tet is, so that it has a main direction of radiation for a suspension jet

[0097] Patent attorneys Hemmer Lindfeld Frese ANTP 3824 WO, 09 / 09 / 2025 14, which is angled or, in this embodiment, essentially perpendicular to the longitudinal or rotational axis X. By superimposing an oscillating rotary movement 24 and an oscillating feed movement 22, the recess or window 42 can thus be formed in

[0098] 5. A defined angular or circumferential range with respect to the longitudinal axis X is formed in the wall of the conveying pipe 2. The oscillating feed movement 22 and the oscillating rotary or pivot movement 24 are controlled by the control unit 26, which actuates the corresponding drives for rotary movement 24 and feed movement 22 and receives signals from the sensor unit 28, which detects the linear position of the feed movement 22 and the pivot angle of the rotary movement 24. In addition, the control unit 26 can determine the angular position or circumferential position based on the signals from the sensor unit 28.

[0099] The position of window 42 is defined by the control unit 15, and the nozzle head 12 is controlled and regulated to form window 42 in the desired shape, size, and position. An optional sensor 29 in the nozzle head 12 allows for the direct acquisition of measured values, such as pressure values ​​or structure-borne sound signals. A sensor 29 on or in the nozzle head 12 could also be used, for example, to detect the position of the nozzle head 12, changes in position, and / or accelerations, or alternatively or additionally to acquire other measured values. Based on such measured values, the ablation or cutting process, for example, can be controlled.

[0100] 25

[0101] Patent attorneys Hemmer Lindfeld Frese ANTP 3824 WO, 09 / 09 / 2025 Reference list

[0102] 2 Conveyor pipe

[0103] 4 Seabed

[0104] 6. Closure, material

[0105] 5 8 Water surface

[0106] 10 Funding platform, support platform

[0107] 12 nozzles

[0108] 14 High-pressure suspension jet

[0109] 16 High-pressure line

[0110] 10 18 Return line

[0111] 20 Drive unit

[0112] 22 linear direction of movement, feed movement

[0113] 24 Direction of rotation, rotary movement

[0114] 26 Control unit

[0115] 15 28, 29 Sensor devices

[0116] 30 High-pressure suspension supply unit

[0117] 32 Rotary feedthrough

[0118] Patent attorneys Hemmer Lindfeld Frese ANTP 3824 WO, 09 / 09 / 2025 34 High-pressure pump

[0119] 36 Mixing device

[0120] 38 Liquid

[0121] 40 abrasives

[0122] 5 42 window, recess

[0123] X Longitudinal axis

[0124] Patent attorneys Hemmer Lindfeld Frese ANTP 3824 WO, 09 / 09 / 2025

Claims

Claims 1. Abrasive suspension machining device for internal machining of pipes or bores (2) with a high-pressure suspension supply device (30), 5 at least one nozzle head (12) for dispensing at least one high-pressure suspension jet (14), which is connected to the high-pressure suspension supply device (30) via a high-pressure line (16), and at least one drive device (20) for moving the nozzle 10 head (12), which is arranged at a distance from the nozzle head (12) and is coupled to the high pressure line (16) for its movement in such a way that the nozzle head (12) can be moved in a bore (2) by movement of the high pressure line (16).

2. Abrasive suspension processing device according to claim 1, at 15 which has a drive unit (20) comprising a rotary drive for rotating the high pressure line (16) and thus the nozzle head (12).

3. Abrasive suspension processing device according to claim 2, in which the rotary drive is designed such that it applies the high pressure 20 line (16) and thus rotates the nozzle head (12) at a rotational speed between 0 and 200 rpm, preferably between 0 and 100 rpm and further preferably between 0 and 50 rpm.

4. Abrasive suspension processing device according to claim 2 or 3, wherein the rotary drive is used for rotation in a first and / or 25 is designed for a second opposite direction of rotation (24) and / or for performing an oscillating rotary motion.

5. Abrasive suspension processing device according to one of claims 2 to 4, wherein the rotary drive is designed such that, patent attorneys Hemmer Lindfeld Frese ANTP 3824 WO, 09 / 09 / 2025 that it can apply an additional torque between 0.1 and 10, preferably between 0.1 and 5 kNm, during an already occurring rotational movement (24).

6. Abrasive suspension processing device according to one of the above 5 related claims, wherein the drive device (20) has a feed drive for linearly moving the high-pressure line (16) and thus the nozzle head (12).

7. Abrasive suspension processing device according to claim 6, in which the feed drive is designed such that it 10 High pressure line (16) moves at a speed between 0 and 500 mm / min, preferably between 0 and 200 mm / min and more preferably between 0 and 100 mm / min.

8. Abrasive suspension processing device according to claim 6 or 7, wherein the feed drive is for linear forward and reverse movement. 15 movement of the high pressure line (16) is designed, preferably with a force of maximum 40000 to 50000 N.

9. Abrasive suspension processing device according to claim 8, wherein the drive device (20) has a feed drive which is designed such that it drives the high-pressure line 20 (16) and the nozzle head (12) moved in a linear oscillating motion.

10. Abrasive suspension processing device according to one of the preceding claims, wherein the high-pressure suspension supply device (30) includes at least one high-pressure pump (34) and a mixing device (36) for adding abrasive material. 25 (40) in a liquid (38), wherein the mixing device (36) is arranged upstream or downstream of the high-pressure pump (34). Attorneys at Law Hemmer Lindfeld Frese ANTP 3824 WO, 09 / 09 / 2025 1. Abrasive suspension processing device according to one of the preceding claims, in which the nozzle head (12) has at least one nozzle whose main jet direction is at least partially radial to an axis of rotation (x) of the nozzle head (12). 5 tet is.

12. Abrasive suspension processing device according to one of the preceding claims, wherein the high pressure line (16) and a feed length greater than 20 m, preferably greater than 200 m and further preferably greater than 500 m. 10 13. Abrasive suspension processing device according to one of the preceding claims, wherein the drive device (20) has at least one sensor device (28) or is connected to a sensor device (28), wherein the sensor device (28) is configured to detect a feed force, a torque, a feed path and / or a rotation angle of the high-pressure line (16).

14. Method for machining a pipe or bore (2) using at least one high-pressure abrasive suspension jet (14), wherein the at least one high-pressure abrasive suspension jet 20 (14) is dispensed inside the pipe or bore (2) from a nozzle head (12) and the nozzle head (12) is moved in the pipe or bore (2) via a high pressure line (16) connected to the nozzle head (12).

15. Method according to claim 14, wherein the nozzle head (12) is via 25 the high-pressure line (16) is moved linearly in the direction of extension of the pipe or bore (2) and / or rotated. Attorneys at Law Hemmer Lindfeld Frese ANTP 3824 WO, 09 / 09 / 2025

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