SU1327403A1 - Pipe-laying barge with pipe-welding set - Google Patents

Abstract

The invention relates to the welding of pipes and can be used in the construction of offshore pipelines, carried out by the method of continuous, lowering the pipeline from the pipe-laying barge. The invention makes it possible to increase the productivity of the pipe-welding complex, as well as to use a lower displacement barge for the construction of a trunker. The pipe-welding complex consists of kinematically interconnected welding lines of long sections of single pipes and a pipe-laying line. The single pipes 4-6 on the receiving rack 2 are cleaned with stripping machines 3 for the contact shoes of welding machines 11, 12 and moved according to the technological process along the live rolls 7-9. Here . they are welded into three-tube sections with resistance welding machines 11 and 12, the internal and external burrs are removed, and the receiving-transport device 15 is moved to the pipeline laying line. Next, they are welded-. are in continuous pipeline, control the joints with flaw detectors 14, isolate the joints at the posts 17 and with the help of nat residents 20 and the stinger of the pipe-laying barge opus-KaJOT to the bottom of the reservoir. Due to this, preliminary connection of individual pipes to three-pipe sections by butt-fusion welding is carried out. 5 e.p., f-ly, 4 ill. with SAE N3 "K1 4

Description

.one

The invention relates to the construction of pipelines, and more but to the construction of poddodnyh pipelines using pipe-laying barges.

The aim of the invention is to increase the productivity of the pipe-welding complex of the pipe-laying barge without increasing the size of the barge by using new pipeline installation lines based on using the flash butt welding method and pre-connecting individual pipes to three-pipe sections using the same welding method.

Fig. 1 shows a diagram of the pipe-welding complex of the pipe-laying barge and the units included in it (without a stinger); Fig. 2 shows a machine for butt welding by piping; in fig. 3 - outdoor unit of the welding machine in FIG. A - external reamer, I,

one

Pipe-laying barge 1 with a production line installed on it (see Fig, O for installation and welding of a pipeline contains a receiving rack 2 with cleaning machines 3 installed on both its sides, which are necessary for cleaning the surfaces of pipes 4-6 for contact pads of welding machines. Flow line contains the first roller conveyor 7 moving single pipes. Along the production line, the second roller table 8, located parallel to the first, and the third roller table 9, parallel to the first two. Communication between the roller tables 7-9 is performed using the first gruzhateley and obliquely disposed sloping 10

On the second line of the roller conveyors 8 there is a first, butt-welding machine for the pipes, consisting of the inner 11 and the outer 12 units. On the third line of the roller conveyors 9, a second machine for butt fusion welding of pipes is placed, consisting of an inner tube 11 and an outer 12 unit. Behind the outdoor units of welding machines along the process flow. On the second and third lines of the roller tables, external pickups 13 are located; On the third line, the roller tables 9, behind the external pick-up device 13, are located successively another after the other, on the distance of the pipe length two ultra

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flaw detector 14 for automatic quality control of welded joints,

First, second and third live rolls

ABOUT

on the side opposite to the receiving rack 2, they are interconnected to each other and to the pipeline laying line by the receiving-transport device 15, which is overheated by Q. Welded pipe sections. A third machine for butt welding, flashing of three-pipe sections into a pipeline string, consisting of in-line 11 and outer 12 units, is located on the pipeline laying line 16. Behind the internal assembly 11 of the third welding machine, at a distance of the pipes one after the other, there are two posts for isolating the joints 17

2Q three-pipe sections. Behind the outer aggregate 12 of the third welding machine, on one platform along the axis of the pipeline to be welded, moved by the hydraulic cylinder 19 relative to the deck of the barge, is installed an external grapple 13, an installation 14 for ultrasonic welded inspection is located along the line of stacking

30 joints, insulation post 17 welded, pipeline joints, tension 20 and stinger (not shown),

Yashyna for butt welding. Pipeline melting (see figure 2) consists of two units: an internal pipe 11 for centering and moving pipes during the welding process and an external 12 for supplying energy to the pipes to be welded. welding machine assembly strengthened. internal pick-up unit 21, the O-tube assembly 11 of the welding machine consists of a movable centering device. 22 and fixed centering 23 blocks located coaxially on the shaft 24. Along the perimeter of the centering blocks Dependent shoes 25 are located in their nests. The movement of the shoes from the center to the periphery occurs under the action of cones 26 moved by hydraulic cylinders 27. Inline pipe 22 the assembly t1 of the welding machine with respect to the shaft 24 — is produced by hydraulic cylinders 28. The hydraulic cylinders 27 and 28 are powered by a hydraulic station 29, which is integrated with the inner tube

Regatta 11. Through the hinge 30, the intrapipe unit 11 is connected to the telescopic jack 31, the opposite end of which through the hinge 32 is connected to a stand 33 fixedly mounted on the deck 34 of the pipe barge.

The outer welding unit 12 (see Fig. 3) consists of two half-rings 35 and 36, connected between themselves on the connector line by four hydraulic jacks 37. On each half-ring it is fixedly set to an even

ten

the end does not turn out to the right of the outer grabber 13, located on the second line of the roller table 8. Thereafter, the pipe with reloaders (not shown below) from the first roller table 7 is reloaded onto the second line of the roller table 8. Then the first line is fed to the first line {Roller 7. 5, which it moves to the right until its first end is to the left of the outdoor unit 12 of the first welding machine. Thereafter, pipe 5 is supplied by loaders.

Several (from 2 to 10) of the roller table 8 trusa to 5 installed

thirty

armored welding transformers 38, secondary and primary windings and which are connected in parallel. The current-carrying device 39 contains tires 40 20 and hydraulic cylinders (not shown) attached to the housings of the half-rings 35 and 36 of the outdoor unit 12. The lower half-ring 36 of the outdoor unit Egata welding machine mounted on the deck 34 pipe-laying barge.

External reamer 13 (see Fig. 4) consists of body 41, on which gears-guides 42 are mounted. Gears -shield 43 are mounted on new-gear x 42 directions. Two gear are mounted on face-plate gear 43 in diametrically opposite sides caliper 44. The toolholder 45 moves in the direction of the caliper 44 with a screw pair 46, at one end of which an asterisk 47 is mounted. On the body 41

grabber 13 in diametrically. . on the opposite sides, stops 48 are installed, which interact when the gear-faceplate 43 is rotated with an asterisk 47. The external reamer 13 is moved relative to the deck 34 across the axis of the pipes to be welded by a hydraulic cylinder 49.

35

40 45

Pipe-welding complex pipe-laying barge 1 works as follows.

 Pipes 4-6 on the receiving rack 2 are cleaned with the help of sweep machines 3, with contact electrocontact machine shoes. After stripping the pipe 4 with a crane

the crap 2 is fed to the first line of the roller table 7. The roll-up 7 pipe 4 moves to the right until its left

the end will not appear to the right of the outer grasses 13, located on the second line of the roller table 8. Thereafter, the pipe with reloaders (not shown) from the first roller of the roller tables 7 is reloaded to the second line of the roller tables 8. Then the first line 5 is fed to the first line {Rollers 7) it moves to the right until its first end is to the left of the outdoor unit 12 of the first welding machine. Thereafter, pipe 5 is supplied by loaders.

five

0

0

five

are cast in the outdoor unit 12 of the first welding machine so that the joint is located in the middle of the current supply device 39 (see figure 2). At the time of passage of the pipes to the welding position of the half-rings 35 and 36 of the outdoor unit 12, they are moved apart by hydraulic cylinders 37 and are located at a maximum distance from each other. After installing the pipes 4 and 5 to the welding position of the half-rings 35 and 36, the hydraulic cylinders 37 are joined together to form a ring around the pipes to be welded (see Fig. 3).

Then, with the help of the coret-shindra of the current-carrying device 39, the current-carrying tires 40 are pressed against the welded pipes 4 5. After this, with the help of the telescopic jack 31 inside-the pipe 1, the first welding machine 11 of the welding machine 4 and 5 is inserted into this way so that their joint is located between the movable 022 and the fixed 23 centering blocks (see .2). Then produce a hitch. The welded pipes 4 and 5 are centered by blocks 22 and 23 using clamping shoes 25. The moving shoes 25 and 25 are clamped by the cones 26 moving towards each other by means of clamping pipes 4 and 5. Then, welding pipes 4 and 5 To do this, current is supplied to the welding transformers 38. Thereafter, oil is supplied to the hydraulic cylinders 28 of the movable centering unit 22. As a result, the pipe 5, which is under voltage, begins to move; towards the pipe 4, which leads to the reflow process. After heating the melted ends of pipes 4 and 5 to a predetermined temperature, they are drained by a specified amount. As a result

five

those precipitates — pipes 4 and -5 — are welded together. After that, the two-tube 4-5 is freed from the current-carrying tires of the outdoor unit 12 and the clamping shoes of the in-line unit 11.

Then the two-tube 4-5 is fed to the right, with the live rolls 8 to the position of removal of the internal and external flash.

Zhets to the left of the outdoor unit 12 of the first welding machine located on the roller table 8..

After the two pipes 4-5 and the pipe 6 are brought to the indicated positions, the next operation is to feed the pipe 6 and the two pipes 4-5 using the loading cranes on the third line of the roller table 9. Then the pipe 6 and the two pipes the double pipe 4-5 stop in the second welding: gang 8 at a time when the seam is over the incisors of the internal grabber 21. The incisors of the internal grater-picker 21 are aligned in the same plane with the incisors of the external grater 13, then with the help of the hydraulic cylinder 49 the external grinder 13 is brought to weld joint killers 4-5, a bracket which is freely passing into the connector — the body 41 of the external grader 13 (see FIG. 4). After that, the drive is turned on.

internal incisor pick-ups and gear-faceplate 43 of the external grader. As a result, the teeth of the star- "three-tube 4-5-6 rejects 47 of the external reamer 13 ny joint is cut out, a single pipe pushes against the stops 48 and rotates one tooth, and the tool holders 45 in the calipers 44 with screw pairs 46 carry out supply of external incisor cutters to the center of the junction of pipes 4-5. The incisors of the internal grader 21 are fed from the center when a defect is detected in the welded

returns to the line of the first roller ha 7, and the double pipe returns to the second roller 8 for re-welding.

thirty

pa using gidpoI9 lindpov (not shown).

35

On line 16 of laying, a three-tube 4-5-6 joins with a previously welded pipeline thread at the technological position of the third electrical box of the machine. For this, the three-tube 4-5-6 is moved to the left until it touches the thread of the welded pipeline. After this, using the hydraulic cylinder 19, the platform 18 is set so that the joint is midway between the current-carrying shoes of the current-carrying device of the outdoor unit 12 of the third welding machine B same time in-line agre40

On the laying line 16, a three-tube 4-5-6 joins with a previously welded pipeline thread at the technological position of the third electric contact machine. For this, the three-tube 4-5-6 is moved to the left until it touches the thread of the welded pipeline. After that, using the hydraulic cylinder 19, the platform 18 is installed so that the joint is not in the middle between the current-carrying shoes of the current-carrying device of the outdoor unit 12 of the third welding machine. At the same time, the in-line aggregate As the gear-faceplate and the internal pick-up head are rotated, the rubbish formed during the welding process and part of the welded joint reinforcement are removed. Then the incisors are retracted from the joint due to the reverse rotation of the pinion gear and the hydraulic drive of the incisors of the internal grating arm. At the same time, the third welding machine 11, with the help of a telescopic hydraulic valve inside the welded pipework 31, is inserted inside the welder 11 of the welding machine to its original position. At the same time, the two-tube 4-5 roller table 8 moves to the right until its left end is to the right of the external grabber 13 installed on this line.

In the process of installation and welding of pipes 4, the hydraulic cylinder 19 is fed right 5 to roller table 7 by overloading in such a way that the cutters of the outlets of the rack 2 feed pipe 6 and the second grabber 13 to move to the right in the plane a three-tube junction 4-5-6 as long as its right end is not with a string of a pipeline.

water. Then, the butt welding of the pipes is carried out as described above. At the same time, three-tube pipe joints 4-5-6 are insulated at the isolation posts 17. After welding the joint, the platform 18, on which the outdoor welding unit 12 and the external re-stripper 13 are mounted, using 036

Zhets to the left of the outdoor unit 12 of the first welding machine located on the roller table 8..

After the two pipes 4–5 and the pipe 6 are brought to the indicated positions, the next operation is to feed the pipe 6 and the two pipes 4–5 with the help of loading cranes on the third line of the roller table 9. Then the pipe 6 and the two-pipe machine. Next is the process of welding and deburring. After welding the three-tube 4-5-6, it is moved to the right with the help of a roller table 9

to the position of control of the welded joint using automated ultrasonic flaw detectors. 14. The quality control of two welded joints occurs simultaneously.

Then the three-tube 4-5-6 is fed through the receiving-transport device 15 for only 16 stacks.

 three-tube 4-5-6 defective-buttress cut, single pipe

When a defect is found in the welded

"Three-tube 4-5-6 defective joint is cut, a single pipe

returns to the line of the first roller table 7, and the double pipe to the second roller table 8 for re-welding.

 "Three-tube 4-5-6 defective joint is cut, single pipe 30

35

40

On the laying line 16, a three-tube 4-5-6 joins with a previously welded pipeline thread at the technological position of the third electric contact machine. For this, the three-tube 4-5-6 is moved to the left until it touches the thread of the welded pipeline. After that, using the hydraulic cylinder 19, the platform 18 is installed so that the joint is not in the middle between the current-carrying shoes of the current-carrying device of the outdoor unit 12 of the third welding machine. At the same time, the in-line aggregate 11 of the third welding machine is introduced into the inside of the pipe to be welded

gat 11 of the third welding machine into the inside of the welded pipe

water. Then, the butt welding of the pipes is carried out as described above. At the same time, three-tube pipe joints 4-5-6 are insulated at insulation posts 17. After welding the joint, the platform 18, on which the outdoor welding unit 12 and the external reamer 13 are mounted, with the help of

15

Then, the external pick-up device P leads to the welded joint of the pipeline. At the same time, the in-line assembly 11 of the welding machine takes a measured step to the left using a telescopic hydraulic jack by an amount equal to the distance between the seam and the cutter plane of the internal grinder at the time of the end of welding. Thereafter, the outer and inner flash are removed. Then, the barge, with the help of the winches, makes a step equal to the length of the three-pipe section (approximately 36 m) and stops. At this position, ultrasonic inspection of flaw detection 14 and insulation of the welded joint of a three-pipe section A-5-6 with a string of pipeline is performed. During this time, the next three-pipe section is welded to the 20th pipeline line. After this, the baza takes the next step. The process then repeats.

Under adverse weather conditions, when the laying of the pipeline to the bottom of the reservoir is temporarily stopped, the process of manufacturing the three-pipe continues and they are stored on the deck in the forward part of the pipe-laying barge on the storage rack (see Fig. 1). When the pipe-laying work is resumed The three pipes go to the laying line 16 and are joined to the previously welded string of the pipeline.

The invention makes it possible to significantly increase the productivity of the pipe-welding complex of the pipe-laying barge through the use of contact welding machines, which can weld long sections of pipes in smaller areas and, therefore, use a barge of a smaller length as a means of transport. cheaper.

Claims (2)

Invention Formula 35 thirty 45 1. Pipe-laying barge with a pipe-welding complex, including kinematically connected welding lines for long sections of single pipes, containing receiving storage transport rack, parallel to each other and longitudinal axis of the barge, drive lines of roller tables with inclined slopes, welding devices for connections of individual pipes in sections, installation 15 - 20 27. 4038 . Units for testing annular joints in pipe sections, receiving-transport device and line 1 and pipeline with tensioner and stinger, installed along the longitudinal axis of the pipe-laying larch, containing a welding device, butt insulation posts and installation for testing annular joints in the pipeline thread between section m1t pipes, which differs from the fact that, in order to improve the performance of the pipe-welding complex, each welding device for connecting individual pipes in the section On the welding line of long sections Single pipes and pipeline laying lines are made in the form of a combined flash butt welding machine containing an internal unit with an internal reamer and an outdoor unit, the welding line of long sections of single pipes is equipped with devices for cleaning the surfaces of the ends of the pipes for contactors of the machine for butt welding by reflow, installed on both sides of the receiving accumulative transport rack, with a tricky grabber, located on the second and third drive roller conveyor lines, while for butt welding, palaping is also installed on the second and third drive ones. 35 lines of live rolls, and the open: gratuitous v shooters - after their for butt welding by reflow, the installation for c. Control of annular joints in The pipe sections are made in the form of two ultrasonic flaw detectors and are placed behind the outer tube; the third line of the roller conveyors successively one after another, the pipeline laying line is equipped with an external pickup installed after the flash butt welding machine, and a platform mounted for movement along the pipeline laying line, and the external pickup and outdoor aggregate of the custom melt welding machine -. They are mounted at the site, and the installation for testing annular joints in the pipeline between the sections is also made in the form of an ultrasonic flaw detector and is placed behind the external grabber. in front of the resident. thirty 45 05 2. Barge pop.1, characterized in that the flash welding machine contains an internal unit for centering and moving pipes during the welding process with an internal reamer mounted on it and an external unit that is detachable in diameter and contains an annular welding transformer with current leads, 10 washer with a plug, on the front surface of which at least two supports are mounted with feed mechanisms incisors, and a gear-plate drive 3 is mounted on the grader body. The barge according to claims 1 and 2, which means that the annular welding transformer is made detachable in the form of two half-cylinders, on the 15, with a grader body of which the surfaces are mounted equally on the deck of the barge with armored transformers possibly placed, connected in parallel along the primary and secondary windings, while the welding transformer is equipped with 20 reciprocating movement across the axis of the roller table. 6. The barge according to claim 5, characterized in that the feed mechanism for the incisors of the external grader is mounted in the form of a screw pair, the nut of which is fixed in the caliper, and the screw is installed with possible hydraulic cylinders, the bodies and rods of which are hinged in pairs, respectively. at the ends of semi-cylinders 6. The barge according to claim 5, characterized in that the feed mechanism for the incisors of the external grader is mounted in the form of a screw pair, the nut of which is fixed in the support and the screw is installed with an option. Barge on PP.1 and 2 ,. About 35% of the rotation, on the end surface, so that the mechanism for moving the internal assembly of the flash butt welding machine with an internal reamer mounted on it is complete in the form of a telescopic hydraulic cylinder, one end of which is fixed on the internal assembly ..ууПЗП713ЮКгз | 7 7 кч “. "7 . G ////// //// Ю5 // U, 1 f Snans I regatta from the side opposite to the fixing point of the internal breeder, and its other end is fixed on the deck of the barge. 5. Complex pop.1, different -. This is due to the fact that the outdoor take-up device is made in the form of a bracket. ring guides on which a gear-mounted -plate washer with a plug is installed, on the front surface of which at least two supports are mounted with feed mechanisms at the same time, the grappling hull is mounted on the deck of the barge with the cutters, and a gear-faceplate drive is mounted on the grappling hull, while the grappling hull is mounted on the deck of the barge with the at the same time, the grappling hull is mounted on the deck of the barge with the reciprocating movement across the axis of the roller table. 6. The barge according to claim 5, characterized in that the feed mechanism of the external incisor pickup tools is shaped as a screw pair, the nut of which is fixed in the caliper, and the screw is mounted rotatably on the face of the gear-face plate, one the end of the screw is equipped with an asterisk, which interacts during rotation of the gear-faceplate with stops, provided for 30 on the diametrically opposite sides of the outer grater body. Yy S if and about tpt / t.S .Jt