CN204735907U - Centralizer in hydraulic pressure - Google Patents
Centralizer in hydraulic pressure Download PDFInfo
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- CN204735907U CN204735907U CN201520386142.6U CN201520386142U CN204735907U CN 204735907 U CN204735907 U CN 204735907U CN 201520386142 U CN201520386142 U CN 201520386142U CN 204735907 U CN204735907 U CN 204735907U
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Abstract
The utility model relates to a pipeline construction equipment provides a centralizer in hydraulic pressure. The centralizer in hydraulic pressure that provides is including preceding guard shield (10), back guard shield (17), tension mechanism I (4), tension mechanism II (9), main shaft (15), supporting wheel and control system, tension mechanism I (4), tension mechanism's II (9) structure is the same, and tension mechanism I (4) connecting rod (13) are the platelike structure of cylinder for both ends, the both ends of connecting rod (13) respectively with the tight hydro -cylinder that rises, ejector pin (49) are articulated is connected, centralizer in hydraulic pressure still be provided with actuating mechanism (6), with think the hydro -cylinder provide the oil circuit of hydraulic oil, with think hydraulic motor provide hydraulic oil the oil circuit and with thinking that the oil circuit that tension mechanism I, tension mechanism II provided hydraulic oil all sets up in the main shaft. The utility model provides circularity and axiality behind the pipeline group butt weld have been guaranteed to the high operating efficiency of pipeline group butt weld.
Description
Technical field
The utility model relates to pipeline construction equipment, is specifically related to centralizer in a kind of hydraulic pressure.
Background technology
Internal clamp is used for two pipelines counterpart before welding, in prior art, existing pipeline forms a team welding method as shown in Figure 1, first pipeline I (1) is supported smooth, again by the mouth of pipe group pair of the mouth of pipe of pipeline II (2) and pipeline I (1), the support of continuous adjustment pipeline II (2), until two pipeline cylindrical axial straightness deviations are minimum.Then the unfitness of butt joint of circumferentially inspection group's line up cylindrical, at the bottom of as high in A point, B point, then force down A point with fixture or rise B point with jack, vice versa.When A point, B point are highly basically identical, after eliminating unfitness of butt joint, mouth of pipe A point, B means of spot welds are integrated with bonding (3), the circumference along group line up carries out this operation successively every a segment distance.Then in the interval of adjacent bonding (3), carry out bottoming welding with welding rod line up, weld seam enough connects after the mouth of pipe can not throw off, and is opened by bonding weld mill, take off bonding, carry out bottoming welding again to the bonding place mouth of pipe with abrasive machine.After the bottoming of mouth of pipe circumference has been welded, then carry out weld seam filling with gas shielded arc welding or submerged-arc welding.
Because backing welding uses welding rod welding, so the mouth of pipe needs to cut out a wider bevel groove, otherwise welding rod can not be stretched bottom weld seam.But roomy weld seam is when the later stage fills welding, wlding can be wasted, reduce welding efficiency.
Utility model content
The utility model adopts following technical scheme for completing above-mentioned purpose:
Centralizer in a kind of hydraulic pressure, in described hydraulic pressure, centralizer includes front protection cover, rear shield, tension mechanism I, tension mechanism II, main shaft, support wheel and control system; The structure of described tension mechanism I, tension mechanism II is identical, and described tension mechanism I has the multiple push rods be uniformly distributed along the circumference, and described push rod is connected with the block that rises; Be provided with the turgor cylinder and connecting rod that drive push rod knee-action; Described connecting rod is two ends is cylindrical platy structure, and cylindrical axes normal described in two ends is in the axis of connecting rod; Described push rod, turgor cylinder all has the arc groove with the cylinder engagement on connecting rod; The two ends of described connecting rod lay respectively in the groove on push rod, turgor cylinder, and are compressed by pressure ring, and the two ends of described connecting rod are articulated and connected with turgor cylinder, push rod respectively; In described hydraulic pressure, centralizer is also provided with driving mechanism, and described driving mechanism includes driving wheel, drives wheel seat, oil cylinder and the hydraulic motor in order to drive driving wheel to rotate; Described driving wheel seat and described main shaft connect firmly; Described driving wheel by drive wheel carrier and described driving wheel seat hinged; The oil cylinder swung up and down for driving driving wheel is hinged on described driving wheel seat, piston rod and the described driving wheel carrier of described oil cylinder are articulated and connected, form swinging up and down of the extension and contraction control driving wheel by controlling cylinder piston rod, thus make driving wheel upwards swing the structure be pressed on inner-walls of duct, and the oil cylinder described in forming coordinates the structure jointly coordinating and realize the interior movement of centralizer in pipeline with described hydraulic motor and described support wheel; With think oil cylinder provide the oil circuit of hydraulic oil, with think hydraulic motor the oil circuit of hydraulic oil is provided and with thinking tension mechanism I, tension mechanism II provides the oil circuit of hydraulic oil to be all arranged in main shaft; The oil circuit that described main shaft has all is connected with control system, and described control system is hydraulic control system, and described hydraulic control system is arranged on the rear end of main shaft.
Be provided with hood between described front protection cover, rear shield, described hood is nested with on described main shaft, and its two ends connect firmly with front protection cover, rear shield respectively.
The magnetic valve that described hydraulic control system includes oil path block and flows in order to hydraulic control oil; Described oil path block and the rear distribution plate be fixed on main shaft connect firmly, in described oil path block, the oil-in of oil circuit one end, oil-out are connected with Hydraulic Station, the other end of oil circuit is connected with the oil circuit in main shaft, by the oil circuit in main shaft for tension mechanism and driving mechanism provide hydraulic oil; The described magnetic valve flowed in order to hydraulic control oil is polylith, be arranged on the both sides of oil path block respectively, magnetic valve is moved by the switching electric control spool carrying electromagnet, and then hydraulic control oil produces the different flow directions, makes the tension mechanism of centralizer in hydraulic pressure, driving mechanism executing agency realizes various action.
Described tension mechanism I is for being positioned at two covers that need dock and arrange before and after pipeline I.
Described tension mechanism II is for being positioned at two covers that need dock and arrange before and after pipeline II.
Described turgor cylinder includes piston, cylinder barrel, cylinder bottom and cylinder cap; Described piston is nested with on described main shaft, and relative main is fixed; Described cylinder barrel, cylinder bottom and cylinder cap connect as one and can move axially along main shaft in the stroke range of hydraulic cylinder.
Centralizer in a kind of hydraulic pressure that the utility model proposes, the connecting rod of tension mechanism adopts two ends to be cylindrical rod-like structure, what decrease hydraulic cylinder moves axially distance, amplify more multiple when changing hydraulic cylinder axial thrust into radial rising power simultaneously, add the calibration result to pipeline circularity, reduce hydraulic cylinder works pressure simultaneously; The structure adopting driving wheel to coordinate with support wheel, facilitates equipment to move in pipeline; In hydraulic pressure, the everything of centralizer all adopts hydraulic-driven, all hydraulic pipeline is hidden in main shaft inside simultaneously, centralized Control is carried out by the hydraulic control of equipment rear end, there is stable action, powerful, saving space, assemble easy feature, by being nested with tension mechanism I on same main shaft, tension mechanism II guarantee group to pipeline axiality, and adjusts by the circularity of boots to pipeline that rises of tension mechanism; Eliminate in a large number pipeline, the mouth of pipe are adjusted, the step of centering and workload, very large bevel angle is not needed during application automatic welding, bottoming welding can once complete, substantially increase the operating efficiency of tube group butt welding, reduce personnel labor intensity, decrease the waste of weld interval and wlding, the circularity after tube group butt welding and axiality requirement can be ensured again simultaneously; Main shaft and described hood are coaxially arranged, and substantially increase the structural rigidity of equipment, produce larger malformation, ensure that the axiality of pipe string when avoiding equipment to work.
Accompanying drawing explanation
Fig. 1 is that in prior art, existing pipeline is formed a team the structural representation of welding method.
Fig. 2 is structural representation of the present utility model.
Fig. 3 is the structural representation of control system in the utility model.
Fig. 4, Fig. 5 are the structural representation of driving mechanism in the utility model.
Fig. 6 is the structural representation of tension mechanism I in the utility model.
Fig. 7 is the assembling schematic diagram of tension mechanism I in the utility model.
Fig. 8 is the force analysis figure of connecting rod in the utility model.
Fig. 9 utilizes the utility model to carry out the right structural representation of pipeline welding group.
In figure: 1, pipeline I, 2, pipeline II, 3, bonding, 4, turgor cylinder I, 5, hood, 6, driving mechanism, 7, turgor cylinder II, 8, brass mechanism 9, tension mechanism I, 10, front protection cover, 11, support wheel, 12, front distribution plate, 13, connecting rod, 14, middle distribution plate, 15, main shaft, 16, rear distribution plate, 17, rear shield, 18, control system, 19, tension mechanism II, 21, back leakage connection, 22, fuel inlet fitting, 23, automatically controlled joint, 24, magnetic valve, 25, oil path block, 26, sealing ring, 27, control box far away, 28, conversion electric power, 29, plug, 30, driving wheel, 31, driven sprocket, 32, bearing pin I, 33, chain, 34, drive sprocket II, 35, drive sprocket I, 36, drive sprocket, 37, hydraulic motor, 38, drive tire, 39, key, 40, drive wheel seat, 41, pin shaft II, 42, pin shaft III, 43, oil cylinder, 44, drive wheel carrier, 45, cylinder bottom, 46, cylinder barrel, 47, piston, 48, cylinder cap, 49, push rod, 51, connecting rod, 52, pressure ring.
Detailed description of the invention
With specific embodiment, the utility model is illustrated by reference to the accompanying drawings:
As shown in Figure 1, centralizer in a kind of hydraulic pressure, in described hydraulic pressure, centralizer includes front protection cover 10, rear shield 17, tension mechanism I 4, tension mechanism II 9, main shaft 15, support wheel and control system; Internal clamp is use commonplace pipeline construction equipment at present, and the agent structure of the utility model internal clamp adopts existing internal clamp structure; Composition graphs 6, Fig. 7, the structure of described tension mechanism I 4, tension mechanism II 9 is identical, described tension mechanism I 4 is for being positioned at two covers that need dock and arrange before and after pipeline I 1, described tension mechanism II 7 is for being positioned at two covers that need dock and arrange before and after pipeline II 2, and described tension mechanism I 4, described tension mechanism II 7 are all nested with on described main shaft 15; Be provided with brass mechanism 8, this embodiment between tension mechanism described in two covers, described brass mechanism adopts existing mature structure in prior art, does not do too much explanation at this; Described brass mechanism 8 is circumferential multiple, and described brass mechanism 8 is connected with tension mechanism I 4 respectively; Described tension mechanism I 4 has the multiple push rods 49 be uniformly distributed along the circumference, and described push rod 49 is connected with the block that rises; Be provided with the turgor cylinder and connecting rod 13 that drive push rod 19 knee-action; Described turgor cylinder includes piston 47, cylinder barrel 46, cylinder bottom 45 and cylinder cap 48; Described piston 17 is nested with on described main shaft 15, and relative main is fixed; Described cylinder barrel 46, cylinder bottom 45 and cylinder cap 48 connect as one and can move axially along main shaft in the stroke range of hydraulic cylinder; Described connecting rod 13 for two ends be cylindrical platy structure, and cylindrical axes normal described in two ends is in the axis of connecting rod; Described push rod 49, turgor cylinder all has the arc groove with the cylinder engagement on connecting rod 13; The two ends of described connecting rod 13 lay respectively in the groove on push rod 49, turgor cylinder, and are compressed by pressure ring 52, and the two ends of described connecting rod 13 are articulated and connected with turgor cylinder, push rod 49 respectively; Front distribution plate 12 is fixing with being threaded with main shaft 15, the square opening of circumference uniform distribution and push rod 49 equal number, formed objects on distribution plate 12, makes push rod 49 can only along this square opening at the square upward sliding perpendicular to main shaft; By the direction of hydraulic control cylinder oil circuit into and out of oil, can the moving direction of application cylider cover 48; The connecting rod 13 that moves axially through of cylinder cap 48 is converted into moving radially of push rod 49, realizes propping up and withdrawal action of push rod 49; Composition graphs 4, Fig. 5, in described hydraulic pressure, centralizer is also provided with driving mechanism 6, and described driving mechanism 6 includes driving wheel 30, drives wheel seat 40, oil cylinder 43 and the hydraulic motor 37 in order to drive driving wheel to rotate; Described driving wheel seat 40 is installed as one after being coordinated with main shaft 15 by drive tire 38; Described drive tire 38 and described driving wheel seat 40 binding, make drive tire 38 can not move axially and rotation with driving wheel seat 40; Described driving wheel seat 40 is hinged with the driving wheel carrier 44 installing driving wheel; Driving wheel 30 described in correspondence is provided with the oil cylinder 43 driving it to swing up and down; The bottom of described oil cylinder 42 is hinged on described driving wheel seat 40 by bearing pin I 41; The piston rod of described oil cylinder 43 is hinged with driving wheel carrier 44, namely controls swinging up and down of driving wheel 30 by controlling the flexible of oil cylinder 43; Driving wheel 30 described in correspondence is provided with drive driving wheel to rotate thus drive the drive mechanism that Hydraulic Internal Line-up Clamp advances at pipe interior or retreats, and described drive mechanism includes hydraulic motor 37, drive sprocket 36, drive sprocket I 35, drive sprocket II 34 and driven sprocket 31; Described drive sprocket 36 is connected with hydraulic motor 37; Described driven sprocket 31 connects firmly with described driving wheel 30; The driving force of hydraulic motor 37 passes to driven sprocket 31 by two pitch chain bars 33, drive sprocket 36, drive sprocket I 35 and drive sprocket II 34, drives driving wheel 30 to rotate, thus drives Hydraulic Internal Line-up Clamp advance at pipe interior or retreat; With think oil cylinder provide the oil circuit of hydraulic oil, with think hydraulic motor the oil circuit of hydraulic oil is provided and with thinking tension mechanism I, tension mechanism II provides the oil circuit of hydraulic oil to be all arranged in main shaft; The oil circuit that described main shaft 15 has all is connected with control system 18, and described control system 18 is hydraulic control system, and described hydraulic control system is arranged on the rear end of main shaft 15.
Be provided with hood 5 between described front protection cover 10, rear shield 17, described hood 5 is nested with on described main shaft 15, and its two ends connect firmly with front protection cover 10, rear shield 17 respectively.
As shown in Figure 3, the magnetic valve that described hydraulic control system includes oil path block and flows in order to hydraulic control oil; Described oil path block 25 is fixing with being threaded with the rear distribution plate 16 be fixed on main shaft, in described oil path block 25, the oil-in of oil circuit one end, oil-out are connected with the hydraulic hose of Hydraulic Station respectively by fuel inlet fitting 22, back leakage connection 21, described fuel inlet fitting 22, back leakage connection 21 all adopt the quick connector of convenient plug, the hydraulic hose length connecting Hydraulic Station is longer, so that equipment has certain moving range; Being connected with the oil circuit in main shaft 15 of the oil circuit other end in described oil path block 25, and seal with sealing ring 26, by the oil circuit in main shaft 15 for tension mechanism and driving mechanism provide hydraulic oil; The described magnetic valve 24 flowed in order to hydraulic control oil is polylith, be arranged on the both sides of oil path block 25 respectively, magnetic valve 24 is moved by the switching electric control spool carrying electromagnet, and then hydraulic control oil produces the different flow directions, makes the tension mechanism of centralizer in hydraulic pressure, driving mechanism executing agency realizes various action; The control circuit of magnetic valve 25 all accesses in pluggable automatically controlled joint 23, utilizes plug 29 and conversion electric power 28 pairs of solenoid valve, with control box 27 far away, different magnetic valves is carried out to the control of switching electricity; Control cables length is longer, and the hand-held control box far away of handled easily personnel stands in equipment nearby to carry out operating and observes; The 220V AC power of working site is converted to the 24V direct current needed for magnetic valve by switching power supply 28, and automatically controlled joint 23 adopts bayonet type quick connector, and when equipment does not work, fluid pressure line and control cables can easily be pulled down, convenient keeping.
As shown in Figure 9, when carrying out pipeline welding and forming a team, first hydraulic centralizing device is inserted in pipeline II 2, makes group line up be in the centre position of hydraulic centralizing device 3, by tension mechanism II 7 rising, stretching pipeline II 2 inwall; Many rows of tension mechanism II 7 boots that rise are propped up in pipeline II 2 simultaneously, the axiality of pipeline II 2 and equipment; Because the power of propping up of tension mechanism is very large, it is large that support is carried out in position less for the group line up place diameter of pipeline II 2 by hydraulic centralizing device, and due to stretching action, the position simultaneously organizing line up place diameter larger can diminish, and namely carries out school circle to group line up place; Simultaneously because hydraulic centralizing device is provided with tension mechanism II 7 after two rows, prop up and automatically make equipment axis and pipeline theory dead in line, guarantee axiality afterwards; Secondly pipeline I 1 is inserted in the front end of hydraulic centralizing device, after group line up contacts with the mouth of pipe of pipeline II 2, the tension mechanism I 4 of hydraulic centralizing device is propped up, hydraulic centralizing device is utilized directly to carry out school circle to the group line up of pipeline I 1, eliminate the misalignment of the mouth of pipe, ensure that pipeline I 1 is coaxial with pipeline II 2 simultaneously; The brass mechanism 8 be simultaneously connected with tension mechanism I 4 together props up with front tightening piece, be attached on the inwall of group line up, automatic welding line up now can be directly adopted to carry out bottoming, fill welding, after having welded, tension mechanism I 4, rear tension mechanism II 7 are regained, hydraulic centralizing device is exited pipeline;
Hydraulic centralizing device is when pipe interior, sometimes need to move, when hydraulic centralizing device is not grouping operation, driving wheel 30 is risen and pushes down inner-walls of duct, utilize hydraulic motor 37, chain, sprocket wheel etc. to make driving wheel 30 produce forward and backward motion, drive hydraulic centralizing device advance at pipe interior or retreat; When equipment is grouping operation, driving wheel 30 can be put down, not contact with tube wall, not affect the group of equipment to operation.
As shown in Figure 8, when carrying out tube group butt welding, the force analysis of connecting rod 13 is as follows: the external force of P suffered by connecting rod 13, its horizontal component N equals the horizontal thrust of cylinder cap 48 pairs of connecting rods 13, and its vertical component F equals the radial support force of push rod, because F=N/tag (α), when connecting rod 51 props up angle [alpha] less (5 ° ~ 8 °), known F=(11 ~ 7) N, namely when connecting rod 51 prop up angle [alpha] less time, cylinder thrust can be amplified 7 ~ 11 times by this structure.Can produce with less hydraulic pressure and very large prop up power, equipment of being convenient to adjusts pipeline circularity; Due to Hydraulic Internal Line-up Clamp work time, connecting rod 13 itself is stressed very large, and it is maximum that this shape of connecting rod 13 can ensure under limited appearance and size, make material, can improve connecting rod interior state, prevents connecting rod to be destroyed; Pressure ring 52 only just can be stressed when push rod 49 is regained, and only need gravity and the frictional force of bearing push rod itself, what therefore pressure ring 52 designed is small-sized, two semicircle forks are only needed to push down connecting rod 13, the space saved can increase the size of connecting rod, push rod and cylinder cap, improves the intensity of major part.
The contrast of welding method: from above-mentioned brief introduction, when employing has the hydraulic centralizing device of school circle function to carry out pipe string operation, eliminate in a large number pipeline, the mouth of pipe are adjusted, the step of centering and workload, very large bevel angle is not needed during application automatic welding, bottoming welding can once complete, substantially increase the operating efficiency of tube group butt welding, reduce personnel labor intensity, decrease the waste of weld interval and wlding, the circularity after tube group butt welding and axiality requirement can be ensured again simultaneously.
Claims (5)
1. a centralizer in hydraulic pressure, in described hydraulic pressure, centralizer includes front protection cover (10), rear shield (17), tension mechanism I (4), tension mechanism II (9), main shaft (15), support wheel and control system; The structure of described tension mechanism I (4), tension mechanism II (9) is identical, and described tension mechanism I (4) has the multiple push rods (49) be uniformly distributed along the circumference, and (49) are connected with the block that rises with described push rod; Be provided with the turgor cylinder and connecting rod (13) that drive push rod (19) knee-action; It is characterized in that: described connecting rod (13) for two ends be cylindrical platy structure, and cylindrical axes normal described in two ends is in the axis of connecting rod; Described push rod (49), turgor cylinder all has the arc groove with the cylinder engagement on connecting rod (13); The two ends of described connecting rod (13) lay respectively in the groove on push rod (49), turgor cylinder, and are compressed by pressure ring (52), and the two ends of described connecting rod (13) are articulated and connected with turgor cylinder, push rod (49) respectively; In described hydraulic pressure, centralizer is also provided with driving mechanism (6), and described driving mechanism (6) includes driving wheel (30), drives wheel seat (40), oil cylinder (43) and the hydraulic motor (37) in order to drive driving wheel to rotate; Described driving wheel seat (40) and described main shaft (15) connect firmly; Described driving wheel (30) is by driving wheel carrier (44) and described driving wheel seat (40) hinged; The oil cylinder (43) swung up and down for driving driving wheel (30) is hinged on described driving wheel seat (40), piston rod and the described driving wheel carrier (44) of described oil cylinder (43) are articulated and connected, form swinging up and down of the extension and contraction control driving wheel by controlling cylinder piston rod, thus make driving wheel upwards swing the structure be pressed on inner-walls of duct, and the oil cylinder described in forming coordinates the structure jointly coordinating and realize the interior movement of centralizer in pipeline with described hydraulic motor and described support wheel (11); With think oil cylinder provide the oil circuit of hydraulic oil, with think hydraulic motor the oil circuit of hydraulic oil is provided and with thinking tension mechanism I, tension mechanism II provides the oil circuit of hydraulic oil to be all arranged in main shaft; The oil circuit that described main shaft (15) has all is connected with control system (18), and described control system (18) is hydraulic control system, and described hydraulic control system is arranged on the rear end of main shaft (15).
2. centralizer in hydraulic pressure according to claim 1, it is characterized in that: between described front protection cover (10), rear shield (17), be provided with hood (5), described hood (5) is nested with on described main shaft (15), and its two ends connect firmly with front protection cover (10), rear shield (17) respectively.
3. centralizer in hydraulic pressure according to claim 1, is characterized in that: the magnetic valve (24) that described hydraulic control system includes oil path block (25) and flows in order to hydraulic control oil; Described oil path block (25) and the rear distribution plate (16) be fixed on main shaft connect firmly, and oil-in, the oil-out of the interior oil circuit one end of described oil path block (25) are connected with Hydraulic Station, and the other end of oil circuit is connected with the oil circuit in main shaft; The described magnetic valve (24) flowed in order to hydraulic control oil is polylith, is arranged on the both sides of oil path block (25) respectively.
4. centralizer in hydraulic pressure according to claim 1, is characterized in that: described tension mechanism I (4) is for being positioned at two covers that need dock and arrange before and after pipeline I.
5. centralizer in hydraulic pressure according to claim 1, is characterized in that: described tension mechanism II (7) is for being positioned at two covers that need dock and arrange before and after pipeline II.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520386142.6U CN204735907U (en) | 2015-06-08 | 2015-06-08 | Centralizer in hydraulic pressure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520386142.6U CN204735907U (en) | 2015-06-08 | 2015-06-08 | Centralizer in hydraulic pressure |
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| CN204735907U true CN204735907U (en) | 2015-11-04 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108568626A (en) * | 2018-06-26 | 2018-09-25 | 四川艾普耐斯油气工程服务有限公司 | A kind of novel pipeline internal clamp |
| CN108612926A (en) * | 2018-06-28 | 2018-10-02 | 永胜机械工业（昆山）有限公司 | A kind of automatic contra-aperture device of cylinder nozzle oil pressure |
| CN109759771A (en) * | 2019-01-30 | 2019-05-17 | 北京石油化工学院 | A kind of inner bearing type Large diameter pipe end docking hydraulic synchronization correction centralizer |
| CN111660054A (en) * | 2020-06-16 | 2020-09-15 | 焦彪彪 | Large pipe butt-joint positioner |
| CN111735837A (en) * | 2020-06-22 | 2020-10-02 | 中国辐射防护研究院 | X-ray backscatter detection device for inspecting defects in pipeline |
| CN112719774A (en) * | 2021-01-15 | 2021-04-30 | 中国水电四局(酒泉)新能源装备有限公司 | Auxiliary device for welding cylinder sections of offshore wind power generation tower |
| CN113547185A (en) * | 2021-09-17 | 2021-10-26 | 陇东学院 | Self-adaptive coaxial transverse seam electric welding device and method in long pipe |
| RU2761926C1 (en) * | 2021-03-22 | 2021-12-14 | Акционерное общество "Пермский завод "Машиностроитель" | Internal clamp for assembly and welding of annular seams with the formation of the reverse side of the seam |
-
2015
- 2015-06-08 CN CN201520386142.6U patent/CN204735907U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108568626A (en) * | 2018-06-26 | 2018-09-25 | 四川艾普耐斯油气工程服务有限公司 | A kind of novel pipeline internal clamp |
| CN108612926A (en) * | 2018-06-28 | 2018-10-02 | 永胜机械工业（昆山）有限公司 | A kind of automatic contra-aperture device of cylinder nozzle oil pressure |
| CN109759771A (en) * | 2019-01-30 | 2019-05-17 | 北京石油化工学院 | A kind of inner bearing type Large diameter pipe end docking hydraulic synchronization correction centralizer |
| CN111660054A (en) * | 2020-06-16 | 2020-09-15 | 焦彪彪 | Large pipe butt-joint positioner |
| CN111660054B (en) * | 2020-06-16 | 2021-12-10 | 焦彪彪 | Large pipe butt-joint positioner |
| CN111735837A (en) * | 2020-06-22 | 2020-10-02 | 中国辐射防护研究院 | X-ray backscatter detection device for inspecting defects in pipeline |
| CN112719774A (en) * | 2021-01-15 | 2021-04-30 | 中国水电四局(酒泉)新能源装备有限公司 | Auxiliary device for welding cylinder sections of offshore wind power generation tower |
| RU2761926C1 (en) * | 2021-03-22 | 2021-12-14 | Акционерное общество "Пермский завод "Машиностроитель" | Internal clamp for assembly and welding of annular seams with the formation of the reverse side of the seam |
| CN113547185A (en) * | 2021-09-17 | 2021-10-26 | 陇东学院 | Self-adaptive coaxial transverse seam electric welding device and method in long pipe |
| CN113547185B (en) * | 2021-09-17 | 2022-02-15 | 陇东学院 | Self-adaptive coaxial transverse seam electric welding device and method in long pipe |
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