• 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:
    1. A method of welding fixed pipe joints, in which welding is performed in several passes, each pass is carried out by several welding torches which are moved around the joint upwards and downwards when the welding torch is tilted, and each subsequent pass is performed in the opposite direction to the previous one. , distinguished by the fact that, in order to reduce the time spent on welding, when performing the second pass, welding is carried out with the same inclination of the welding torch as at. first pass.
    公开号:SU1109044A3
    申请号:SU782595498
    申请日:1978-03-31
    公开日:1984-08-15
    发明作者:Эдмон Минкиевич Андре；Пуарье Норбер
    申请人:Компани Франсэз Де Петроль (Фирма)；Этюд Петрольер Марин (Фирма)；
    IPC主号:
    专利说明:

    2. A device for carrying out the method according to claim I, comprising a faceplate, in the guides of which the carriages with welding torches with copier rollers are installed, which are supporting rollers
    and means for fixing the device on the pipe, characterized in that it is provided with three mounting rollers with power drives mounted on the faceplate and mounted to be rotatable in two mutually perpene; (creative directions.
    3. The device according to claim 2, characterized in that each carriage is provided with three pairs of rollers, which are mounted with the possibility of movement in guide plates, made in the form of two
    tracks, one of which is made on a larger one, and the other on a smaller radius of the faceplate, with two pairs of rollers placed on a track of a larger diameter, and a third of a pair on a track of a smaller diameter, the carriages are fitted with hinges perpendicular directions with brackets on which welding torches with copier rollers are placed.
    4. The device according to PP.2 and 3, which is equipped with a horizontal beam with rollers and jacks, while the rollers are mounted on it with the possibility of moving in a plane, perpendicular to the horizontal beam, by means of jacks.
    one
    The invention relates to welding, in particular, to methods for welding fixed pipe joints, preferably those having a chamfer, and can be used to make main pipelines, in particular for placement under water.
    A known method of welding fixed pipe joints, in which welding is performed in several passes, each pass is carried out by several welding torches that are moved around the joint to rise or from top to bottom when the welding torch is tilted, and each subsequent pass is performed in the direction opposite to the previous SP .
    The method is carried out by a device for welding of non-rotary joints of pipes containing a faceplate, into whose guides the carriages with welding torches with copier rollers, supporting rollers and means of fastening the device on the pipe 2 are installed.
    The disadvantage of this method is the large loss of time to perform welding, associated with the readjustment of equipment during the next pass.
    The purpose of the invention is to reduce the time spent on welding.
    In order to achieve this goal, according to the welding method, the pipe joints do not rotate, in which welding is performed in several passes, each passage is exposed to several welding torches that are moved around the joint upwards and downwards when the welding torch is tilted. opposite to the previous one, when performing the second pass, welding is carried out with the same inclination of the welding torch as in the first pass.
    In addition, the device for welding of non-rotating pipe joints, containing a faceplate, in the guides of which the carriages with welding torches with copier rollers are installed, which support rollers and means for fixing the device on the pipes, are equipped with three mounting rollers with power drives attached to the faceplate, and pivotally mounted in two mutually perpendicular directions.
    Each carriage is equipped with three pairs of rollers that are installed
    with the ability to move in the direction of the faceplate, made in the form of two tracks, one of which is made for more, and the other - for a smaller radius of the faceplate, with two pairs of rollers placed on the track of larger diameter, and a third of the pair on the track of smaller diameter, the carriages are hinged they can be rotated in two mutually perpendicular directions by the brackets on which the welding torches with copy rollers are placed. The device is also equipped with a horizontal beam with rollers and jacks, while the rollers are mounted on it with the ability to move in a plane perpendicular to the horizontal beam by means of jacks. Fig. 1 shows a device for carrying out the method, a general view in Fig. 2. 2 is a device with means of fastening the device on pipes, a side view of FIG. 3; a device, rear view; in fig. 4 - means of fastening. Device on pipes; FIGS. 5 and 6 are installation rollers at different points in their operation; FIG. 7 is a form of grooving edges for welding pipes with a wall thickness of less than 12 mm; in fig. 8 is the same as in FIG. 7 for thicknesses greater than 12 mm; Fig, 9 cutting with offset edges; in fig. 10 - welded butt pipe joints; Figs, And - scheme of the implementation of the method at the beginning of the welding from the bottom up; in fig. 12 - the same, from top to bottom; in fig. 13 - carriage with three pairs of rollers; in Fig., 14 section A-A in Fig, 13; in fig. 15, node I in FIG. one; FIG. 16 shows the fastening of the cam roller on the bracket of FIG. 17 - the same, side view; in fig. 18 -: mounting the device on a horizontal beam; Fig. 19 shows a welding arrangement. The device contains a faceplate 1, which has supporting means for supporting the welded pipes 2 and 3, the supporting means made in the form of supporting rollers 4 and 5, which rest on the pipe 2 and are placed behind the Zfig faceplate. 4) and the support roller 6 remaining on the pipe 3, the Roller 6, (FIG. 4) is mounted on the compensation lever 7 fixed on the faceplate 1 and provided with a hydraulic device for moving in the form of a power cylinder 8. The roller 6 is mounted on the axis 9, which is perpendicular to the plane of the faceplate 1 and can be driven manually or, if required, by any suitable drive means.
    The device also contains installation rollers 10, I, and 12 with power drives, which are mounted by turning two mutually perpendicular planes. Each roller is mounted on the bracket 13 and can rotate around the axis 14, the bracket 13 has the ability to rotate about the axes 15 and 16. The power drive of each of the installation rollers consists of power cylinders 17 and 18, the device contains means of fastening it on the pipes in the form of clamping force cylinders 19 and 20 associated with clamping levers 21 and 22 with rubber pads on the shoes 23 and 24. As can be seen from FIG. I, welding torches 25 -28 are located on two carriages 29 and 30, and burners 25 and 26 are located near from the ends of the carriage 29, while as the burners 27 and 28 are located near the ends of the carriage 30. According to FIG. 13 and 14, the carriages 29 and 30 have three carriers, each of which contains three pairs of rollers 31 and 32, the rollers 31 move along the guides 33 of the faceplate I, while the rollers 32 move along the guides 34, each knga 34 and 33 has the same plane of symmetry. The carriages 29 and 30 are driven by respectively 35.36 engines (Fig. 3). which are connected to corresponding gearboxes, sprockets (not shown) and chains 37 of which are driven. gear wheels 38 which engage with toothed racks 39 rigidly attached to carriages 29 and 30. To reduce gaps, rollers 31 and 32 can be mounted on a spring-shifting lever. The rollers 31 and 32 of each carrier device are arranged in such a way that they form a triangular design adapted to be used on the ends of the faceplate I (Fig. 13). Welding torches 25 - 28 (Fig. 1) have corresponding driving levers 40 set in motion.
    by means of power cylinders 41. FIG. 1 shows coils 42 with a weldable material for welding torches. Welding torches are equipped with copier rollers 43 and mounted on brackets in the form of levers 40 pivotally mounted with the possibility of rotation in two mutually perpendicular directions. Copy roller has the ability to rotate around the axes 44 and 45.
    The roller 43 (FIGS. 16 and 17) rotates around an axis 415 in a fork 47, rotated around a radial axis 44, which is perpendicular to the axis 46 and forms the means for automatically orienting the roller 43 so that its plane of symmetry moves to the central plane 48 of the groove and he leaned on the edges. The roller 43 is made of solid steel, has such a shape that it precisely moves along the groove, even if the bearing edges of the roller 43 are close to the outer surface of the pipe. The edges of the roller 43 are made at an angle of 45 and are inclined so that their bisectors are inclined at the points of contact with the edges at an angle of 45 to the central plane 48. This reduces the risk of the roller colliding with the protrusions of the weld in the separation. In addition, a V-shaped recess with a 133 ° angle in the center of the edges of the roller 43 prevents any 1 contact with a very close or accidentally excessively convex welding seam, or a seam that may have embossed protrusions.
    In order to avoid the accumulation of burrs from the weld on the roller 43, the plug 47, which is also made of solid steel, controls the side surface of the roller in the vicinity of a very small gap. The knife 49, cut at an angle of 135 and rigidly attached to the plug 47, passes into the V-shaped groove of the roller to prevent the flash of the welding seam from sticking to it. Plate I is placed on the beam 50 (Fig. 18) and installed so that its axis is parallel to the axis 51 of pipes 2 and 3, and, moreover, is located in a vertical plane. At the rear of the beam 50 there is a double bracket 52 made of LISTOST steel, the pipes of which serve to hold and stiffen the face plate. The beam has rollers
    53 with jacks 54 for moving them.
    Before welding, the edges of the pipe are machined for welding, and cutting is performed depending on the thickness of the pipes being welded. For pipes less than 12 mm thick, cutting 55 (Fig. 7) is satisfactory, the edges converging at an angle of 45 ° or less. For pipes with a thickness of 12 mm, the base of the cutting 55 (Fig. 8) may be inclined at an angle of 25 ° to the plane of convergence 48, the upper part 56 of which may be inclined at an angle of 5. It is also possible to weld pipes with an offset of about 2 or 3 mm (Fig 9), while the distance between the pipes is preferably zero, but may be in the order of 1 or even 2 mm, which is possible if one of the pipes was not completely straight cut or if the end of the pipe is not flat.
    Welding with a groove of this kind makes it possible to ensure the absence of defects of all the difficulties associated with penetration and welding bath mode. In addition, the lack of clearance reduces the weight of the deposited metal. The pipes are assembled on a bedding device consisting of a copper lining 57 and a clamp 58, between which an insulator 59 is placed, in the lining there are channels 60 for cooling and protective gas supplied through the opening 61.
    Then, welding is carried out as follows (Fig. 11).
    The first passage 62 is made when welding welding torches 25-28, each of which has an inclination t between approximately 15 and 30 to the normal 63, to the welding point in front of this normal passing through the central axis of the pipe, so as to perform welding to the left, The first pass is followed by the second pass 64 when lowering without changing the position of the welding torches, so as to perform the welding to the right. A second pass of 64 millimeters is performed in the presence of COg or argon.
    Welding can also begin when the torch moves from top to bottom (Fig. 12). The first pass 65 is performed by lowering the torch i with the inclination i of the axis of the order of 5 - I 0 to the normal 63, and the second pass 66 is the elevation with the same inclination of the torch axis and is welding to the right. The first welding to the left (regardless of the progress on the rise or lowering has the main advantage, which is to increase the preheating of the metal where the weld seams, and to increase the hardening rate of the weld pool. These results are even more noticeable when first pass: is a lift pass, such as passage 62. This contributes to the adaptation of any required protective gas device and, in particular, makes it possible to use pure COg. Weld is wide during welding and deep, and at the base of any type of cutting with or without a gap, complete melting occurs between the ends of the pipes. Therefore, a satisfactory weld can be made automatically without any need to change the angle of tilt of the welding means. onto the tube by means of rollers 4-6 and adjusting rollers 10-12, it is usually sufficient to force the device to rest on three rollers 4-6 in order to move the rollers IO and 1 to the plane of convergence or tubes, because the elasticity Tsilya power core structure 8, which pushes the roller 6 on the tube sufficient to rotate the device about a horizontal axis and until the rollers 10 are 1 does not enter into a breaker, with such engagement device is secured in this position. Power cylinders I can be actuated at full pressure and precisely set the faceplate 1 relative to the plane of the pipes, and, in addition, the rod driving roller 6 can be fixed to the appropriate gauge by stopping the flow of oil to the cylinder 8. This measure may be supplemented with any other mechanism of fastening. In addition, since the roller 6 can move freely on the upper part 48 of the pipe, its axis 9 can be secured with a mechanical brake 67. Once the axis of the welding torches is precisely set in the plane of convergence of the pipes defined by the engagement of the rollers 10-12 with the groove limited by cutting 55, the device is blocked by clamping ram cylinders 19 and 20 (Fig. 3), which are located on the back of faceplate I. The pressures created by the two cylinders 19 and 20 are balanced so as to avoid any gripping effect and Ani device completely immobile after the rollers 10 - 12 is returned to the inoperative position. When welding pipes, in order to ensure accurate tracking of the junction 68, an anti-roll roller 43 is included in the operation of the device, while this welding torches are kept in the center plane of the groove, despite the shape deviation. Therefore, as soon as the radial inclination x of the welding torches relative to the normal 63 is determined, the depth E of the groove is acceptable, the distance f between the tip of the welding torch and the outer surface of the pipe and the distance F from the end to the weld seam 69 are known, the length of the melted wire coming out of the tip will be kept constant. Such a welding process improves the quality of welding, heating by means of welding torches occurs more correctly, commensurate with all changes in the distance, the quality of welding is kept constant. The width of the roller 45 is determined so that the roller either moves during the first two strokes along a path halfway through the pipe thickness, or so that during the final passes it moves very close to the outer surface of the pipe. Obviously, any shift of the edges causes an automatic adjustment of the welding conditions by moving the axis 70 of the welding torches, while the welding torches are moving towards cutting the bottom pipe, so that boiling is better and therefore better melting. The advantage of the proposed method is that it provides
    the possibility of using available welding tools, since their quality and defects do not have any effect on the quality provided by the automatic direction,
    performed by the copier roller in the deposition and final passages in which the molten metal spreads and the two side surfaces of the groove melt to the same magnitude.
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    权利要求:
    Claims (4)
    [1]
    1. The method of welding fixed pipe joints, in which welding is performed in several passes, each pass is carried out by several welding torches, which move around the joint to rise and from top to bottom when the welding torch is tilted, each subsequent pass being performed in the direction opposite to the previous one, distinguishing and This is because, in order to reduce the time spent on welding, when performing the second pass, welding is carried out with the same inclination of the welding torch as in. first pass.
    >
    1 109044
    [2]
    2. A device for implementing the method according to π. I, comprising a faceplate, in the guides of which movable carriages are installed with welding torches with copy rollers, support rollers and means for fastening the device to the pipe, characterized in that it is equipped with three mounting rollers with power drives attached to the faceplate and installed with the possibility of rotation in two mutually perpendicular directions.
    [3]
    3. The device according to p. 2, characterized in that each carriage is equipped with three pairs of rollers that are mounted with the ability to move in the faceplate guides made in the form of two tracks, one of which is made on the larger and the other on the smaller radius of the faceplate, two pairs of rollers are placed on the track of larger diameter, and the third pair is on the track of smaller diameter, the carriages are equipped with pivotally mounted on them with the possibility of rotation in two mutually perpendicular directions brackets on which are welded nye burner follower rollers.
    [4]
    4. The device according to claims 2 and 3, characterized in that it is equipped with a horizontal beam with rollers and jacks, while the rollers are mounted on it with the ability to move in a plane perpendicular to the horizontal beam by means of jacks.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1109044A3|1984-08-15|Method of welding non-rotary butts of pipes and device for effecting same
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    US3084246A|1963-04-02|Process and apparatus for welding
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    US3974356A|1976-08-10|Multiple arc welding device and method
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    US2417594A|1947-03-18|Method of progressively electric resistance butt welding longitudinal seam edges of a tubular blank and apparatus therefor
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    JP2505965B2|1996-06-12|Welding method and apparatus for fixed piping
    CA1268968A|1990-05-15|Automatic tab plate welding apparatus
    SU1077730A1|1984-03-07|Apparatus for automatic welding of tee joints
    同族专利:
    公开号 | 公开日
    JPS53144437A|1978-12-15|
    AU519092B2|1981-11-05|
    NL180183B|1986-08-18|
    NO781104L|1978-10-03|
    ES468346A1|1978-12-01|
    AR219940A1|1980-09-30|
    NL180183C|1987-01-16|
    CA1093346A|1981-01-13|
    GB1588696A|1981-04-29|
    US4213555A|1980-07-22|
    BR7801964A|1978-09-26|
    NO157729B|1988-02-01|
    MX146601A|1982-07-14|
    SE441505B|1985-10-14|
    AU3491978A|1979-10-18|
    NO157729C|1988-05-11|
    DD135580A5|1979-05-16|
    FR2385486B1|1981-12-04|
    IT1094018B|1985-07-26|
    US4330074A|1982-05-18|
    JPH0117799B2|1989-04-03|
    DE2813920A1|1978-10-05|
    IT7821863D0|1978-03-31|
    DE2813920C2|1986-05-15|
    SE7803416L|1978-10-01|
    NL7803319A|1978-10-03|
    FR2385486A1|1978-10-27|
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    DE102012007563B3|2012-04-10|2013-05-29|Salzgitter Mannesmann Line Pipe Gmbh|Apparatus for joining the ends of steel pipes by orbital welding|
    CN103264209A|2013-04-26|2013-08-28|中国化学工程第三建设有限公司|Combine-welding method of stainless steel welded parts|
    CN103464961A|2013-10-08|2013-12-25|长沙星驰实业有限公司|Round ring seam welding clamp as well as bent head and straight pipe welding method|
    CN104801894B|2014-11-04|2017-03-29|国网江苏省电力公司经济技术研究院|For the welding gun position adjusting device of bus sealing of tube|
    GB2534382B|2015-01-21|2017-09-13|Acergy France SAS|Scanning bevels in preperation for welding|
    WO2016145485A1|2015-03-16|2016-09-22|Wayne Gregory Mitchell|Butt fusion welding of pipes in situ|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR7709824A|FR2385486B1|1977-03-31|1977-03-31|
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