Engineering seamless treatment device for weld joints in corrosion-resistant continuous pipe

Abstract

The utility model belongs to the technical field of production and processing of coiled tubing, and particularly relates to a seamless treatment device for welding seam engineering in a corrosion-resistant coiled tubing. An engineering seamless treatment device for weld joints in a corrosion-resistant continuous pipe comprises a mounting base, a plurality of lifting racks are linearly arranged on the upper portion of the mounting base, extrusion roller mounting racks and extrusion rollers are symmetrically arranged in the lifting racks, the extrusion rollers are used for conveying the continuous pipe, and a hot extrusion mechanism is arranged in the continuous pipe; the hot extrusion mechanism comprises hot extrusion balls, steel wire ropes and ceramic section strings, one ends of the steel wire ropes are fixed with the hot extrusion balls, the other ends of the steel wire ropes penetrate through the ceramic section strings and then are fixed with the welding rack, and thermal induction coils are arranged on the outer sides of the ceramic section strings. The hot extrusion mechanism is arranged in the continuous pipe, the inner surface of the continuous pipe is subjected to hot extrusion while local heating is carried out on the inner surface of the continuous pipe, internal defects of the continuous pipe are removed in a hot extrusion and hot drawing combined mode, seamless longitudinal weld engineering of the continuous inner surface of the continuous pipe is achieved, and the quality of the continuous pipe is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of continuous oil pipe production and processing, and particularly relates to a seamless processing device for welding seam engineering inside a corrosion-resistant continuous pipe. Background Art

[0002] The corrosion-resistant alloy continuous oil pipes currently developed mainly use laser welding for longitudinal welds. Continuous laser welding of several thousand meters requires high laser power, which is easy to produce welding spatter and welding ablation on the inner surface of the continuous pipe, forming welding defects; the height of the weld inside the laser-welded continuous pipe is relatively low, and the scraper and other equipment will not be able to scrape it cleanly during the process of treating the inner surface. There is currently no method to eliminate the gap between the weld rib and the inner surface of the continuous pipe, so that the inner surface of the continuous pipe can achieve the purpose of online engineering seamlessness. At the same time, during the injection of carbon dioxide mixed phase, corrosion is easy to occur at the weld and welding defect positions on the inner surface; but due to the long length of the continuous pipe, how to remove the metal debris inside the pipe in time during the treatment process has always been a problem for the continuous pipe manufacturing companies. At present, there is no equipment that can perform online treatment on the inner surface of the continuous pipe to improve the surface finish of the pipe. Utility Model Content

[0003] In view of the above problems, the purpose of the utility model is to provide a corrosion-resistant continuous pipe internal weld engineering seamless processing device, by arranging a hot extrusion mechanism in the continuous pipe, the inner surface of the continuous pipe is locally heated and the inner surface is hot extruded at the same time, and the internal defects of the continuous pipe are removed by combining hot extrusion and hot drawing. The gap between the laser welding ribs on the inner surface of the corrosion-resistant continuous oil pipe and the inner surface of the pipe can be continuously removed, and the defects such as spatter and ablation of the laser welding of the continuous pipe can be eliminated, so as to realize the seamlessness of the longitudinal weld engineering of the continuous inner surface of the continuous pipe and improve the quality of the continuous pipe.

[0004] The technical solution of the utility model is: a seamless processing device for the inner weld of a corrosion-resistant continuous pipe, comprising a mounting base, a plurality of lifting frames are linearly arranged on the upper part of the mounting base, the lifting frames are concave, and squeezing roller mounting frames are symmetrically arranged inside the lifting frames, squeezing rollers are mounted on the squeezing roller mounting frames, and the squeezing rollers are used to transport the continuous pipe, a hot extrusion mechanism is arranged inside the continuous pipe, the hot extrusion mechanism comprises a hot extrusion ball, a steel wire rope and a ceramic segment string, one end of the steel wire rope is fixed to the hot extrusion ball, and the other end is fixed to the welding frame after passing through the ceramic segment string, a thermal induction coil is arranged on the outer side of the ceramic segment string, and the outer diameter of the hot extrusion ball is greater than the inner diameter of the continuous pipe by 0.2 mm.

[0005] Extrusion servo motors are respectively arranged on the outer sides of the inner concave of the lifting frame, and an extrusion roller electric rod is arranged at the output end of the extrusion servo motor, and the extrusion roller electric rod is fixedly connected to the extrusion roller rotating shaft.

[0006] A lifting servo motor is provided at the bottom of the lifting frame, an output end of the lifting servo motor is fixedly connected to the lifting frame, and a mounting seat of the lifting servo motor is fixedly connected to the top of the mounting base.

[0007] The hot extrusion ball is provided with a through hole, and the connecting end of the steel wire rope and the hot extrusion ball is provided with a steel wire rope clip.

[0008] The ceramic segment string comprises a small ball connection end connected in sequence, a plurality of first ceramic concave dies and first ceramic convex dies that match each other, a plurality of second ceramic concave dies and second ceramic convex dies that match each other, and an end seal.

[0009] The ball connecting end includes a connecting end body, a connecting end center hole is provided in the center of the connecting end body, a connecting end groove is provided on the side of the connecting end body close to the hot extruded ball, the connecting end groove is annular, and an arc surface is provided on the side of the connecting end groove close to the connecting end center hole, and the arc surface matches the spherical surface of the hot extruded ball.

[0010] The first ceramic die and the second ceramic die have the same structure, and include a ceramic die body. A ceramic die center hole is provided at the center of the ceramic die body, and connecting grooves are provided at both ends of the ceramic die body.

[0011] The outer wall of the second ceramic die is also provided with a die wire groove.

[0012] The first ceramic convex mold and the second ceramic convex mold have the same structure, and include a ceramic convex mold body. A ceramic convex mold center hole is provided at the center of the ceramic convex mold body, and connecting convex grooves are respectively provided at both ends of the ceramic convex mold body.

[0013] The outer wall of the second ceramic convex mold is also provided with a convex mold line groove.

[0014] The technical effects of the utility model are as follows: 1. The utility model sets a hot extrusion mechanism inside the continuous pipe, and hot extrudes the inner surface of the continuous pipe while locally heating the inner surface of the continuous pipe. The internal defects of the continuous pipe are removed by combining hot extrusion and hot drawing. The gap between the laser welding ribs and the inner surface of the corrosion-resistant continuous oil pipe can be continuously removed, and the defects such as spatter and ablation of the laser welding of the continuous pipe can be eliminated. The longitudinal weld engineering of the continuous inner surface of the continuous pipe is seamless, and the quality of the continuous pipe is improved. 2. The utility model ensures that the pipe is uniformly stressed during the hot extrusion of the inner surface of the continuous pipe by hot extrusion balls, further improves the roundness of the continuous pipe, and ensures the connection between the continuous pipe and the downhole tool. 3. The utility model adopts a ceramic node string installed on the outside of the wire rope, and the high-frequency induction coil is wound on the outer surface of the ceramic node string. While the inner surface of the continuous pipe is heated by online induction, the ceramic node string effectively prevents the internal wire rope from being heated and melted when the high-temperature induction coil is heated.

[0015] The following is a further description with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a structural stereoscopic schematic diagram of a seamless processing device for welding seam inside a corrosion-resistant continuous pipe.

[0017] Figure 2 The utility model is a structural top view of a seamless processing device for welding seam inside a corrosion-resistant continuous pipe.

[0018] Figure 3 The utility model is a structural side view of a seamless processing device for welding seam inside a corrosion-resistant continuous pipe.

[0019] Figure 4 It is a structural schematic diagram of the hot extrusion mechanism of the utility model.

[0020] Figure 5 It is a structural schematic diagram of the ceramic node string of the utility model.

[0021] Figure 6 It is a structural schematic diagram of the small ball connecting end of the utility model.

[0022] Figure 7 It is a structural schematic diagram of the first ceramic concave mold of the utility model.

[0023] Figure 8 It is a structural schematic diagram of the first ceramic punch of the utility model.

[0024] Fig. 9 It is a structural schematic diagram of the second ceramic concave mold of the utility model.

[0025] Fig.10 It is a structural schematic diagram of the second ceramic punch of the utility model.

[0026] Figure markings: 1-mounting base; 2-lifting frame; 3-extrusion roller mounting frame; 4-extrusion roller; 5-continuous tube; 6-extrusion servo motor; 7-extrusion roller electric rod; 8-lifting servo motor; 9-hot extrusion mechanism; 91-hot extrusion ball; 92-thermal induction coil; 93-wire rope; 94-through hole; 95-wire rope clip; 10-ball connecting end; 11-first ceramic die; 12-first ceramic punch; 13-second ceramic die; 14-second ceramic punch; 15-end seal; 101-connecting end body; 102-arc surface; 103-connecting end center hole; 104-connecting end groove; 111-ceramic die body; 112-connecting groove; 113-ceramic die center hole; 114-die wire groove; 121-ceramic punch body; 122-connecting convex groove; 123-ceramic punch center hole; 124-punch wire groove. DETAILED DESCRIPTION Example 1

[0027] like Figure 1 to Figure 10 As shown, a seamless processing device for the inner weld of a corrosion-resistant coiled pipe comprises a mounting base 1, a plurality of lifting frames 2 are arranged linearly on the upper part of the mounting base 1, the lifting frames 2 are concave, and squeeze roller mounting frames 3 are symmetrically arranged inside the lifting frames 2, squeeze roller mounting frames 3 are mounted on the squeeze roller mounting frames 3, and the squeeze rollers 4 are used to transport the coiled pipe 5, a hot extrusion mechanism 9 is arranged inside the coiled pipe 5, the hot extrusion mechanism 9 comprises a hot extrusion ball 91, a steel wire rope 93 and a ceramic segment string, one end of the steel wire rope 93 is fixed to the hot extrusion ball 91, and the other end passes through the ceramic segment string and is fixed to the welding frame, a thermal induction coil 92 is arranged on the outer side of the ceramic segment string, and the outer diameter of the hot extrusion ball 91 is larger than the inner diameter of the coiled pipe 5 by 0.2 mm.

[0028] The mounting base 1 of the utility model is mainly used to fix the whole equipment, the main function of the squeezing roller 4 is to transmit the coiled tube 5, and the outer part of the steel wire rope 93 is covered with a ceramic segment string; the ceramic segment string is mainly used to shield the electromagnetic induction of the heat induction coil 92, and protect the inner steel wire rope 92 while the heat induction coil 92 passes the current to induction heat the inner surface of the coiled tube 5; the hot extrusion ball 91 mainly performs hot extrusion on the inner surface of the coiled tube 5 to eliminate the internal defects of the coiled tube 5. When the coiled tube 5 passes, the inside of the coiled tube 5 is subjected to heat extrusion resistance, resulting in uneven force on the coiled tube 5 at this position. The external squeezing roller 4 transmits the coiled tube 5, and on the basis of ensuring that the tube is uniformly stressed, the coiled tube 5 is extruded in the line, and the roundness of the coiled tube is further increased. The hot extrusion ball 91 inside the coiled tube 5 is close to the inner surface of the coiled tube 5, and the hot extrusion ball 91 is at the same horizontal position as the inner diameter of the coiled tube 5 and the squeezing roller 4, so as to achieve stable induction heating of the inner surface of the coiled tube 5. Example 2

[0029] On the basis of Example 1, in this embodiment, preferably, an extrusion servo motor 6 is respectively provided on the outer side of the inner concave shape of the lifting frame 2, and an extrusion roller electric rod 7 is provided at the output end of the extrusion servo motor 6, and the extrusion roller electric rod 7 is fixedly connected to the rotating shaft of the extrusion roller 4.

[0030] The utility model discloses that an extrusion servo motor 6 is provided on the outer side of the inner concave shape of the lifting frame 2, and an extrusion roller electric rod 7 is provided at the output end of the extrusion servo motor 6. The extrusion roller electric rod 7 is fixedly connected to the rotating shaft of the extrusion roller 4. The extrusion servo motor 6 controls the lateral movement of the extrusion roller 4 through the extrusion roller electric rod 7, and adjusts the distance between the extrusion rollers 7 according to the external size of the continuous tube to ensure that the centers of the continuous tubes of the lifting frame 2 are located on the same horizontal line. Example 3

[0031] On the basis of Example 1 or Example 2, in this embodiment, preferably, a lifting servo motor 8 is provided at the bottom of the lifting frame 2, the output end of the lifting servo motor 8 is fixedly connected to the lifting frame 2, and the mounting seat of the lifting servo motor 8 is fixedly connected to the top of the mounting base 1.

[0032] A lifting servo motor 8 is provided at the bottom of the lifting frame 2 of the utility model, the output end of the lifting servo motor 8 is fixedly connected to the lifting frame 2, the mounting seat of the lifting servo motor 8 is fixedly connected to the top of the mounting base 1, and the lifting servo motor 8 controls the lifting frame 2 so that the lifting frame 2 is located in the same horizontal plane, ensuring that the outer surface of the continuous pipe is evenly stressed. Example 4

[0033] On the basis of Example 1 or Example 3, in this embodiment, preferably, the hot extruded ball 91 is provided with a through hole 94 , and the connecting end of the steel wire rope 93 and the hot extruded ball 91 is provided with a steel wire rope clip 95 .

[0034] In the present invention, a wire rope clip 95 is provided at the connection end between the wire rope 93 and the hot extrusion ball 91 , and the hot extrusion ball 91 is fixed by the wire rope clip 95 . Example 5

[0035] Based on Example 1 or Example 4, in this embodiment, preferably, the ceramic node string includes a small ball connecting end 10 connected in sequence, a plurality of first ceramic dies 11 and first ceramic convex dies 12 that match each other, a plurality of second ceramic dies 13 and second ceramic convex dies 14 that match each other, and an end seal 15.

[0036] The ceramic segment string of the utility model comprises a small ball connecting end 10 connected in sequence, a plurality of first ceramic concave dies 11 and first ceramic convex dies 12 that match each other, a plurality of second ceramic concave dies 13 and second ceramic convex dies 14 that match each other, and an end seal 15. The ceramic segment string is mainly used to shield electromagnetic induction, and protect the internal steel wire rope 93 while the external thermal induction coil 92 induction heats the inner surface of the coiled tube by electric current. The main purpose of the segment string design is to resist the brittle fracture of the integrated ceramic due to the deformation of the coiled tube during the flexible transmission process of the coiled tube. Example 6

[0037] On the basis of Example 1 or Example 5, in this embodiment, preferably, the ball connecting end 10 includes a connecting end body 101, a connecting end center hole 103 is provided at the center of the connecting end body 101, a connecting end groove 104 is provided on the side of the connecting end body 101 close to the hot extruded ball 91, the connecting end groove 104 is annular, and a curved surface 102 is provided on the side of the connecting end groove 104 close to the connecting end center hole 103, and the curved surface 102 matches the spherical surface of the hot extruded ball 91.

[0038] The connecting end body 101 of the utility model is provided with a connecting end groove 104 on the side close to the hot extruded ball 91. The connecting end groove 104 is annular. The connecting end groove 104 is provided with an arc surface 102 on the side close to the connecting end center hole 103. The arc surface 102 matches the spherical surface of the hot extruded ball 91 to ensure that the hot extruded ball 91 and the ball connecting end 10 are firmly connected under the action of the wire rope 93. Example 7

[0039] On the basis of Example 1 or Example 6, in this embodiment, preferably, the first ceramic die 11 and the second ceramic die 13 have the same structure, including a ceramic die body 111, a ceramic die center hole 113 is provided at the center of the ceramic die body 111, and connecting grooves 112 are respectively provided at both ends of the ceramic die body 111.

[0040] The first ceramic die 11 and the second ceramic die 13 of the utility model have the same structure, including a ceramic die body 111, a ceramic die center hole 113 is provided at the center of the ceramic die body 111, and connecting grooves 112 are provided at both ends of the ceramic die body 111 for cooperating with the first ceramic punch 12 and the second ceramic punch 14 to form a ceramic node string. Example 8

[0041] On the basis of Example 1 or Example 7, in this embodiment, preferably, the outer wall of the second ceramic die 13 is further provided with a die wire groove 114 .

[0042] The outer wall of the second ceramic die 13 of the utility model is also provided with a die wire groove 114 for installing the outer connecting section of the thermal induction coil 92 . Example 9

[0043] On the basis of Example 1 or Example 8, in this embodiment, preferably, the first ceramic punch 12 and the second ceramic punch 14 have the same structure, including a ceramic punch body 121, a ceramic punch center hole 123 is provided at the center of the ceramic punch body 121, and connecting grooves 122 are respectively provided at both ends of the ceramic punch body 121.

[0044] The first ceramic punch 12 and the second ceramic punch 14 of the utility model have the same structure, including a ceramic punch body 121, a ceramic punch center hole 123 is provided at the center of the ceramic punch body 121, and connecting grooves 122 are respectively provided at both ends of the ceramic punch body 121 for cooperating with the first ceramic die 11 and the second ceramic die 13 to form a ceramic node string. Example 10

[0045] On the basis of Example 1 or Example 9, in this embodiment, preferably, the outer wall of the second ceramic punch 14 is further provided with a punch line groove 124 .

[0046] The outer wall of the second ceramic punch 14 of the utility model is also provided with a punch wire groove 124 for installing the outer connecting section of the thermal induction coil 92.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A seamless processing device for the weld seam inside a corrosion-resistant continuous pipe, characterized in that: The invention comprises a mounting base (1), wherein a plurality of lifting frames (2) are arranged linearly on the upper part of the mounting base (1), wherein the lifting frames (2) are concave in shape, and a squeezing roller mounting frame (3) is symmetrically arranged inside the lifting frames (2), wherein a squeezing roller (4) is mounted on the squeezing roller mounting frame (3), and wherein the squeezing roller (4) is used to transport a continuous pipe (5), wherein a hot extrusion mechanism (9) is arranged inside the continuous pipe (5), wherein the hot extrusion mechanism (9) comprises a hot extrusion ball (91), a steel wire rope (93) and a ceramic segment string, wherein one end of the steel wire rope (93) is fixed to the hot extrusion ball (91), and the other end of the steel wire rope (93) is fixed to the welding frame after passing through the ceramic segment string, and a thermal induction coil (92) is arranged outside the ceramic segment string, and the outer diameter of the hot extrusion ball (91) is 0.2 mm larger than the inner diameter of the continuous pipe (5).

2. According to claim 1, a corrosion-resistant continuous pipe internal weld engineering seamless processing device is characterized by: Extrusion servo motors (6) are respectively provided on the outer sides of the inner concave of the lifting frame (2), and an extrusion roller electric rod (7) is provided at the output end of the extrusion servo motor (6), and the extrusion roller electric rod (7) is fixedly connected to the rotating shaft of the extrusion roller (4).

3. The device for seamless processing of the weld seam in a corrosion-resistant continuous pipe according to claim 1, characterized in that: A lifting servo motor (8) is provided at the bottom of the lifting frame (2); an output end of the lifting servo motor (8) is fixedly connected to the lifting frame (2); and a mounting seat of the lifting servo motor (8) is fixedly connected to the top of the mounting base (1).

4. The device for seamless processing of the weld seam in a corrosion-resistant continuous pipe according to claim 1, characterized in that: The hot extrusion ball (91) is provided with a through hole (94), and the connecting end of the steel wire rope (93) and the hot extrusion ball (91) is provided with a steel wire rope clip (95).

5. The device for seamless processing of the weld seam in a corrosion-resistant continuous pipe according to claim 1, characterized in that: The ceramic segment string comprises a small ball connection end (10) connected in sequence, a plurality of mutually matching first ceramic concave dies (11) and first ceramic convex dies (12), a plurality of mutually matching second ceramic concave dies (13) and second ceramic convex dies (14), and an end seal (15).

6. The device for seamless processing of the weld seam in a corrosion-resistant continuous pipe according to claim 5, characterized in that: The ball connecting end (10) comprises a connecting end body (101), a connecting end center hole (103) is provided at the center of the connecting end body (101), a connecting end groove (104) is provided on the side of the connecting end body (101) close to the hot extruded ball (91), the connecting end groove (104) is annular, and a curved surface (102) is provided on the side of the connecting end groove (104) close to the connecting end center hole (103), and the curved surface (102) matches the spherical surface of the hot extruded ball (91).

7. The device for seamless processing of weld seam in corrosion-resistant continuous pipe according to claim 5, characterized in that: The first ceramic die (11) and the second ceramic die (13) have the same structure, comprising a ceramic die body (111), a ceramic die center hole (113) being provided at the center of the ceramic die body (111), and connecting grooves (112) being provided at both ends of the ceramic die body (111).

8. The device for seamless processing of the weld seam in a corrosion-resistant continuous pipe according to claim 7, characterized in that: The outer wall of the second ceramic die (13) is also provided with a die line groove (114).

9. The device for seamless processing of weld seam in corrosion-resistant continuous pipe according to claim 5, characterized in that: The first ceramic convex mold (12) and the second ceramic convex mold (14) have the same structure, comprising a ceramic convex mold body (121), a ceramic convex mold center hole (123) being provided at the center of the ceramic convex mold body (121), and connecting convex grooves (122) being provided at both ends of the ceramic convex mold body (121).

10. The corrosion-resistant continuous pipe internal weld seamless processing device according to claim 9, characterized in that: The outer wall of the second ceramic convex mold (14) is also provided with a convex mold line groove (124).

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