• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    patent abstract: "device for connecting the ends of steel pipes by orbital welding". a device for joining the ends of already aligned and welded pipe joints, especially steel, by orbital welding, with welding joint formed by the pipe ends and tools movable orbitally around the welding joint for welding and testing the welding seam. The device then consists of firmly lockable guide base plates seated on the pipe ends on both sides of the respective pipe ends in the weld point region, whose guide base plates centrally have a radially opening circular recess for housing of the tubes to be welded in the recess, with clamping elements fixedly attached to the side of the guide base plates opposite the solder joint for locking the guide base plates to the pipe ends as well as with a frame for housing the tooling tools. weld and test arranged rotary mounted on the inner sides facing the weld joint between the guide base plates and centrally pivotable around 360 ° of the pipe ends.
    公开号:BR112014024890B1
    申请号:R112014024890-7
    申请日:2013-03-26
    公开日:2018-08-14
    发明作者:Kocks Hans-Jürgen；Winkels Jörn；Keitel Steffen；Neubert Jan；Rude Sebastian
    申请人:Salzgitter Mannesmann Line Pipe Gmbh；
    IPC主号:
    专利说明:

    (54) Title: DEVICE FOR THE CONNECTION OF STEEL PIPE EXTREMITIES THROUGH ORBITAL WELDING (51) lnt.CI .: B23K 37/053; B23K 2/31; B23K 9/028; B23K 26/28 (30) Unionist Priority: 10/04/2012 DE 10 2012 007 563.4 (73) Holder (s): SALZGITTER MANNESMANN LINE PIPE GMBH (72) Inventor (s): HANS-JÜRGEN KOCKS; JÕRN WINKELS; STEFFEN KEITEL; JAN NEUBERT; SEBASTIAN RUDE (85) National Phase Start Date: 10/06/2014
    1/10
    Descriptive Report of the Invention Patent for DEVICE FOR CONNECTION OF STEEL TUBE EXTREMITIES THROUGH ORBITAL WELDING.
    [001] The present invention relates to a device for connecting the ends of steel tubes by means of orbital welding according to the preamble of claim 1.
    [002] The invention relates, in particular, to the welding of tubes, which can have, for example, wall thicknesses from 2 to 20 mm and diameter from 60 to 1600 mm, and which are joined together by means of different processes welding, such as laser beam welding, arc laser welding in hybrid technique or arc welding, for tubular ducts. Tubes are understood to mean both round circular tubes as well as hollow profiles with different cross sections.
    [003] Tube welding in orbital technique is generally known, for example, from DE 103 34 446 A1. There, an orbital welding device for connecting two pipe ends is described, which is seated on a first pipe end and with it locked and the second pipe end is brought to the welding position in front of the first pipe end. . By means of two 180 ° offset welding heads, which in turn are pivotable around an axis, a 360 ° round weld seam can be made. It is therefore disadvantageous that two soldering heads are needed to weld the tube at the complete periphery. [004] Another orbital welding device is known from WO 2005/056230 A1, in which a combination of protective metal gas welding and laser welding is employed. This so-called hybrid laser-MSG welding is characterized by the fact that the arc and the laser beam are arranged at a defined mutual distance and a possibility of puncturing the
    2/10 larger gap compared to a smaller laser beam welding process. The device comprises a guide ring, which is alignable with the tubular end of a first tube. Alignment occurs by a plurality of fixing screws arranged along the periphery of the guide ring, by means of which the distance of the guide ring from the pipe surface is precisely adjustable. The guide ring is used to guide a movable orbital car on it, which can accommodate other components next to the weld head for monitoring the process and checking the weld seam. With the device described, tubes are welded in the mobile application for pipes using the orbital welding technique.
    [005] The disadvantage in this device is the expensive construction with closed guide rings around the pipe and the expensive alignment and centering of the pipe ends. Precisely centering with larger pipe diameters is very expensive and requires additional centering installations on the device with correspondingly high holding forces, to implement a geometrically stable weld joint during welding. With this, a very heavy and locally flexible device is used with only a lot of expense.
    [006] It is still expensive to carry out the welding process, in which the pipe ends must be inserted into the device and centered, and then the welded pipe must be moved out of the container along the length.
    [007] In summary, it can be seen that, due to the state of the art at the moment, there is no industrially applicable orbital guide system, which is optimally up to the requirements regarding the quality and economy of orbital welding.
    [008] The purpose of the invention is to indicate a device for joining the ends of steel tubes by means of orbital welding,
    3/10 that overcomes the disadvantages described, that is, it can be produced at low cost, with flexible application and with little time.
    [009] This objective is achieved, from the preamble, in combination with the characteristics of claim 1. Other advantageous executions are an integral part of sub-claims.
    [0010] The teaching of the invention comprises a device for joining the ends of tubes already aligned and welded in joint seam, especially of steel, by means of orbital welding, with a weld joint formed by the ends of tube and tools orbitally displaced in weld joint for welding and testing the weld seam, characterized by the fact that the device consists of guide base plates firmly lockable and settable on the pipe ends on both sides at the respective pipe ends in the point region weldments, the guide base plates having a circular recess centrally with a radial opening for central housing of the tubes to be welded in the recess, with clamping elements fixedly connected on the side of the guide base plates opposite the weld joint for locking the guide base plates with the pipe ends as well as a frame for housing the welding and test arranged mounted rotating on the inner sides facing the weld joint between the guide base plates and centrally pivotable at least 360 ° around the pipe ends. [0011] For welding, the device is simply seated with the guide base plates symmetrically to the weld joint with a radial distance over the pipe ends and locked with the pipe ends with the clamping elements fixedly connected in both sides to the guide base plates. Therefore, the diameter of the circular recess in the guide base plates is greater than
    4/10 than the diameter of the pipe ends to be housed. Thus, the device can also be used advantageously for welding different pipe diameters. The tube to be welded is then located in a circular recess of the guide base plates, and the radial distance between the guide base plate and the tube is so adjusted that the pivotable frame, rotating between the base plates of guide, with tool housings for welding and testing tools extends centrally around the longitudinal axis of the pipe to be welded.
    [0012] The device according to the invention remedies the disadvantages of orbital welding devices known, on the one hand, for a very simple and therefore low cost structure; on the other hand, due to the fact that this device is used advantageously for tubes already aligned, that is, centered and welded in adhesion seam.
    [0013] By decoupling the centering and adherence of the tube ends from the orbital welding itself, the construction is clearly simplified in structure and can be used in a more flexible way, that is, detached from the site.
    [0014] With the proposed device, moreover, it can be welded with only one welding head to 360 ° peripheral seam.
    [0015] For the joining of the tubes, laser beam welding can be advantageously used. For this, a beam generated by a laser beam source is guided by a light-conducting fiber to an optics fixed to the displacement car. The optics form the laser beam and send it to the joint of both tubes. For this purpose, advantageously, an angled optics is used, with the collimation of the laser beam being 150 mm and the focus 200 mm. Additionally, still, a so-called LWM sensor (“laser-weldingmonitor” is applied to optics, which serves to detect the following
    5/10 quantities:
    - emitted plasma light,
    - laser radiation reflected back
    - laser power reflected in the beam divider.
    [0016] The reason for using an angled optics lies in the reduction of the work area by the light-conducting fiber. This has a large radius of curvature and would greatly amplify the work area required for circulation. By using an angled optics, it is possible to move and connect the light-conducting fiber towards the longitudinal axis of the tube. The forward movement of the optics takes place through two advance axes for a precise positioning of the process in the Y direction (along the tube axis) and Z (in the radial direction to the tube surface), which are advantageously executed as spindle gear spherical circular.
    [0017] For a detection of the weld joint, especially edge and slit displacement, in another advantageous embodiment of the invention, the linear trace generated by a linear laser is detected across the joint by a camera. The values thus registered are used for sewing programming. The laser line is detected by camera software and influences the height and lateral adjustment of the optics through a position calculation. Following the welding process, the camera is used for topography of the seam. Attention is then paid to excess sewing height and open weld failures. The camera and the linear laser, as well as the optics, are arranged centrally between the two pivoting arches on the displacement carriage and are guided with circular movement around the tube.
    [0018] For the evaluation of interior welding failures, two ultrasound test heads are guided following the welding head around the tube. Each of the soldering heads is arranged
    6/10 on each side of the weld seam. The welding heads themselves are arranged rotatable like cylinders and work, advantageously, without coupling means. They are arranged at a distance to the joint adjustable by axes and kept in contact with the tube by elastic fixation. For different pipe diameters, however, height adjustment by axes is also possible. As optics and camera, the ultrasound test heads are arranged centrally between both inner plates and are moved together with them around the tube.
    [0019] The equipment is controlled by an external control, by which the laser equipment and the device technique can be activated. It also detects and processes all camera data from the ultrasound test heads and the LWM sensor found in the optics. The software runs the program in a precise and initialized way.
    [0020] In addition to the tools required for the welding process itself, other tools or components necessary for the welding process can be driven through the displacement cars, assisting the welding process or required for subsequent manufacturing steps. They can be, for example, a seam tracking system or measuring means for quality control without destroying the weld seam by lifting the seam or detecting faults. By means of a system preceding the welding process, the seam joint can be detected and the subsequent welding process adjusted in its position.
    [0021] By means of, for example, optical systems, it is also possible to test the quality of the weld seam.
    [0022] Figure 1 illustrates the basic structure of the device according to the invention. It consists of the two guide base plates 2
    7/10 in the form of a circular ring, which are provided with a radial opening, so that they can rest on the tubes 1, 1 'to be joined. The diameter of the inner circular ring is greater than the diameter of the tubes 1, 1 'to be welded, in order to be able to carry out, through the radial clearance, an exact adjustment for a centralized circulation of the welding and test tools. For fixing the device at the ends of the tubes 1, 1 'to the outer sides of the guide base plates 2 opposite the solder joint, clamping elements 3 are arranged, with which the two guide base plates 2 are locked with one end tube each by clamping elements 3.
    [0023] On the inner sides, facing the weld joint, of the guide base plates 2, a pivoting arc 4, 4 'in the form of a circular ring is guided rotatingly mounted, also provided with a radial opening, so that it can execute a circular movement along the guide base plates 2 around the tubes 1, 1 '. The pivot arches 4, 4 'are rigidly joined together, using tool housings 5, 5', for a pivot frame, and in the tool housings 5, 5 'all technical junction components can be mounted and test.
    [0024] Figure 2 shows in schematic section, the annular guide of the pivot arch or pivot frame. The guide base plate 2 in the form of a circular ring is seated on the pipe 1 and locked with the pipe 1 with the clamping element 3. Due to the radial clearance between the outside diameter of the pipe 1 and the diameter of the inner circular ring of the base plate guide 2, an exact centralized adjustment of the device can take place with respect to the longitudinal axis of the tube 1. To enable a circular movement of the pivot arch 4, 4 ', it is advantageously guided, orbitally pivotable, by a guide rail 6 in the form circular ring, arranged respectively between the guide base plates 2 and the pivot arches 4, 4 '.
    8/10
    The guide rails 6 are arranged on the pivot arches 4, 4 'and are guided respectively by guide rollers 7 arranged on the outer and inner surface of the guide rails 6, which in turn are joined with the guide base plates 2 .
    [0025] For driving the circular movement of the pivot frame, according to the invention, on both sides respectively (not shown here) between pivot arch 4, 4 'and guide base plate 2 a toothed crown and a drive motor. The two toothed crowns are attached to the pivot arches 4, 4 'and follow the circular movement. The motors are connected with the guide base plates 2 and transmit the rotation movement by pinions to the toothed crowns.
    [0026] Between the motor and the pinion, in another advantageous embodiment of the invention, there is a transmission consisting of a planetary gear and a pivot wheel. It is responsible for starting and ending the rotational movement as continuously as possible.
    [0027] Figure 3 shows, in a schematic view, the device seated on the pipe ends on a longitudinal axis of pipe with welding and test tools mounted, in tool housings 5, 5 'arranged between the pivot arches 4, 4 '. For the best representation, in this view only the rear pivot arc 4 and the welding and testing tools fixed there by the tool housings 5, 5 'are not shown here.
    [0028] In the pivot arc 4 there is a laser welding installation 8 that can be moved on several axes, consisting of a welding head 9 and displacement installations for radial high adjustment 10 and for positioning in the longitudinal direction of the tube 11, with which the laser beam 12 can be exactly aligned with the weld joint of the tubes 1, 1 'to be joined.
    9/10 [0029] For programming the required seam geometry and, thus, for laser control (eg positioning, power), the weld joint geometry, especially edge and slot displacement, is detected by a camera 14 across the weld joint by means of a linear trace (not shown here) produced by means of a linear laser 13.
    [0030] The values thus registered are used for sewing programming. The laser line is detected by a camera software and influences by a position calculation the height and lateral adjustment of the optics of the welding head 9. Linear laser 13 and camera 14 are provided for exact positioning of a displacement installation 15 for height and angle adjustment.
    [0031] For evaluation of errors in the weld seam directly after welding, two ultrasonic test heads 16 are so arranged in another tool housing (not shown) that test the weld seam on both sides. The ultrasound test heads 16 are rotatable and, by means of other displacement installations 17, 18, can be adjusted radially in height and in the longitudinal direction of the tube with respect to the weld seam to be tested. The ultrasound test heads 16 are preferably suitable for testing without coupling means.
    REFERENCE LIST
    1, 1 'tubes guide base plates clamping elements
    4, 4 'pivot arches tool housing of weld head
    5 'tool housing of test tools guide rails
    10/10 guide rollers laser welding installation welding head displacement installation for radial height adjustment displacement installation for positioning in the longitudinal direction of the tube laser beam linear laser camera height and angle displacement ultrasonic test heads installation of displacement for adjustment in radial height displacement installation for positioning in longitudinal direction of the tube
    1/2
    权利要求:
    Claims (10)
    [1]
    1. Device for joining the ends of tubes (1, 1 ') already aligned and welded in joint seam, especially steel, by means of orbital welding, with a weld joint formed by the ends of the tube and tools orbitally displaced around of the weld joint for welding and testing the weld seam, characterized by the fact that the device consists of guide base plates (2) firmly lockable and settable on the pipe ends on both sides at the respective pipe ends in the region from the weld point, the guide base plates (2) having a circular recess centrally with a radial opening for the central housing of the tubes (1, 1 ') to be welded in the recess, with clamping elements (3) fixedly connected on the side of the guide base plates (2) opposite the solder joint for locking the guide base plates (2) with the pipe ends as well as with a frame for housing the welding and test tools di rotationally mounted on the inner sides facing the weld joint between the guide base plates (2) and centrally pivotable at least 360 ° around the pipe ends.
    [2]
    2. Device according to claim 1, characterized by the fact that the frame consists of pivot arches (4, 4 ') and tool housings (5, 5') joining the pivot arches (4, 4 ') welding and testing tools.
    [3]
    Device according to claims 1 and 2, characterized by the fact that between the guide base plates (2) and the pivot arches (4, 4 ') a guide rail (6) in the form is arranged respectively circular ring, on which the pivot arches (4, 4 ') are mounted pivotable orbitally around the tube (1, 1').
    [4]
    4. Device according to claim 3, featuring Petition 870180054289, of 06/25/2018, p. 4/9
    2/2 due to the fact that the pivot arches (4, 4 ') are mounted by guide rollers (7) on the guide rails (6).
    [5]
    Device according to any one of claims 1 to 4, characterized in that as welding tools are mounted in the tool housings (5, 5 ') welding heads (9) operating by laser, protective gas and / or hybrids.
    [6]
    Device according to any one of claims 1 to 5, characterized by the fact that as a test tool, a system for testing weld seam without destruction is mounted.
    [7]
    7. Device according to claim 6, characterized by the fact that the system for testing weld seam without destruction is an ultrasound test facility.
    [8]
    8. Device according to claim 7, characterized in that the ultrasound test installation comprises at least two ultrasound test heads (16), which are settable on the pipe ends on both sides of the weld seam .
    [9]
    Device according to any one of claims 1 to 8, characterized by the fact that in addition to the welding and testing tools, other tools are arranged in the tool housings.
    [10]
    10. Device according to claim 9, characterized in that the other tools are one or more additional weld heads, a seam geometry detection system and / or a seam tracking system.
    Petition 870180054289, of 06/25/2018, p. 5/9
    1/2
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    法律状态:
    2018-04-10| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]|
    2018-07-03| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2018-08-14| B16A| Patent or certificate of addition of invention granted|
    优先权:
    申请号 | 申请日 | 专利标题
    DE102012007563.4|2012-04-10|
    DE102012007563A|DE102012007563B3|2012-04-10|2012-04-10|Apparatus for joining the ends of steel pipes by orbital welding|
    PCT/DE2013/000179|WO2013152752A1|2012-04-10|2013-03-26|Device for connecting the ends of pipes made of steel by means of an orbital welding process|
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