Pipeline welding positioning device

Abstract

The invention provides a pipeline welding positioning device which comprises a mounting frame, two mounting rings are mounted on the mounting frame, adjusting blocks capable of sliding in the radial direction of the mounting rings are symmetrically distributed on each mounting ring, and the adjusting blocks can be fixed to the fixing positions of the mounting rings after the radial sliding amount of the adjusting blocks is adjusted through telescopic sliding devices. One side of the inner end of the adjusting block is a wedge-shaped cambered surface with a large outside and a small inside, and the other side of the inner end of the adjusting block is an equal-diameter cambered surface. The adjusting block and the telescopic sliding device are used for adjusting butt joint positioning of the two welded pipelines, the problem that the pipelines are prone to deviation during fixing during manual positioning is solved, the structure is simple and compact, positioning is accurate, and the welding efficiency is further improved.

Description

Technical Field

[0001] The present invention relates to the field of pipeline welding positioning, and in particular to a pipeline welding positioning device. Background Art

[0002] A natural gas pipeline refers to a pipeline that transports natural gas (including associated gas produced in oil fields) from the production site or treatment plant to the urban gas distribution center or industrial enterprise users, also known as a gas transmission pipeline. Using natural gas pipelines to transport natural gas is the only way to transport large amounts of natural gas on land. Among the total length of pipelines in the world, natural gas pipelines account for about half. Welding, also known as fusion welding, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure.

[0003] In the prior art, when welding natural gas pipelines, two pipelines need to be aligned for welding. In the prior art, the positions of the pipelines are usually adjusted manually to achieve welding. However, when fixing the position after manual adjustment, the pipelines will still be displaced due to the operation during fixation, which will affect the alignment effect and work efficiency.

[0004] Therefore, a pipeline welding positioning device that solves the above problems is needed. Summary of the Invention

[0005] The purpose of the present invention is to provide a pipeline welding positioning device that can improve welding efficiency.

[0006] The present invention is implemented as follows:

[0007] The present invention provides a pipeline welding positioning device, which is characterized in that it includes a mounting frame, two mounting rings are arranged on the mounting frame, and on each mounting ring, adjustment blocks that can slide radially along the mounting ring are symmetrically arranged. The adjustment blocks adjust their radial sliding amount through a telescopic sliding device and can be fixed at a fixed position on the mounting ring. One side of the inner end of the adjustment block is a wedge-shaped arc surface with a large outer diameter and a small inner diameter, and the other side is an equal-diameter arc surface.

[0008] According to the above technical solution, a correction sleeve is also arranged on the mounting frame, and the correction sleeve is connected to the mounting frame through an axial sliding adjustment mechanism.

[0009] According to the above technical solution, the telescopic sliding device includes an inner cylinder radially fixed on the mounting ring and an outer cylinder connected to the oil outlet of the inner cylinder. A piston rod is arranged in the inner cylinder, and the outer end of the piston rod is connected to the adjustment block. A solenoid valve is arranged on the connecting pipe between the oil inlet of the outer cylinder and the oil outlet of the inner cylinder. A piston is arranged in the outer cylinder, and the piston is connected to the end of the outer cylinder through an elastic member at the oil outlet end of the outer cylinder.

[0010] According to the above technical solution, the elastic member is a spring.

[0011] According to the above technical solution, the outer cylinder is fixed on the mounting ring or other positions.

[0012] According to the above technical solution, the axial sliding adjustment mechanism includes a threaded rod installed on the mounting frame and a correction sleeve bracket that is in screw-thread pair cooperation with the threaded rod through a lead screw, and the threaded rod is driven by a driving device.

[0013] According to the above technical solution, the correction sleeve bracket also slidably cooperates with a guide rod installed on the mounting frame.

[0014] According to the above technical solution, both sides of the inner hole of the correction sleeve are variable-diameter cross-sections with a larger outer diameter and a smaller inner diameter, and the middle part is an equal-diameter cross-section.

[0015] According to the above technical solution, at least three adjusting blocks are installed on each mounting ring, and they are evenly distributed on the mounting ring.

[0016] According to the above technical solution, the driving device is a stepping motor.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The present invention uses the adjusting block and the telescopic sliding device to adjust the butt joint positioning of the two welded pipes, solves the problem that the pipes are prone to deviation during manual positioning and fixing, not only has a simple and compact structure, but also has accurate positioning, and further improves the welding efficiency;

[0019] 2. By arranging the correction sleeve, the correction sleeve is slidably connected to the mounting frame through the axial sliding adjustment mechanism, which plays a role in guiding and positioning the welded pipes, and further improves the convenience of welding. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0021] Figure 1 It is the front view of a pipe welding positioning device provided by an embodiment of the present invention.

[0022] Figure 2 It is the structural schematic diagram of the adjusting block and the telescopic sliding device provided by an embodiment of the present invention. Detailed Embodiments

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Components of the embodiments of the present invention generally described and illustrated in the accompanying drawings herein can be arranged and designed in a variety of different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0025] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0026] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0027] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not mean that the components are required to be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0028] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0030] The features and performance of the present invention will be further described in detail below in conjunction with embodiments.

[0031] As Figure 1 , 2 shown, this embodiment provides a pipeline welding positioning device, including a mounting frame 1, on which two mounting rings 4 are arranged. On each mounting ring 4, 4 adjusting blocks 3 that can slide radially relative to the mounting ring are evenly distributed. The adjusting blocks 3 can adjust their radial sliding amount through a telescopic sliding device and can be fixed at a fixed position of the mounting ring 4. One side of the inner end of the adjusting block 3 is a wedge-shaped arc surface with a large outer diameter and a small inner diameter, and the other side is an equal-diameter arc surface, facilitating the insertion and welding of the pipeline body 2 to be welded.

[0032] In this embodiment, the telescopic sliding device includes an inner cylinder 10 fixedly arranged radially on the mounting ring 4 and an outer cylinder 6 connected to the oil outlet of the inner cylinder. A piston rod 11 is arranged in the inner cylinder 4, and the outer end of the piston rod 11 is connected to the adjusting block 3. A solenoid valve 9 is arranged on the connecting pipeline between the oil inlet of the outer cylinder 6 and the oil outlet of the inner cylinder 10. A piston 7 is arranged in the outer cylinder 10, and the piston 7 is connected to the end of the outer cylinder through an elastic member at the oil outlet end of the outer cylinder. Among them, the elastic member is a spring 8. In this embodiment, the outer cylinder 6 can be fixed on the mounting ring 4 or other positions, depending on the actual working conditions.

[0033] In this embodiment, in order to further improve the convenience of welding work, a correction sleeve 12 is also arranged on the mounting frame 1. The correction sleeve 12 is connected to the mounting frame through an axial sliding adjustment mechanism. The axial sliding adjustment mechanism includes a threaded rod 14 arranged on the mounting frame 1 and a correction sleeve bracket 16 that is in threaded engagement with the threaded rod 14 through a screw thread pair. The threaded rod 14 is driven by a driving device 15. Among them, the driving device 15 is a stepping motor. The correction sleeve bracket 16 also slidably cooperates with a guide rod 13 arranged on the mounting frame 1. The two sides of the inner hole of the correction sleeve 12 are respectively variable-diameter cross-sections with a large outer diameter and a small inner diameter, and the middle part is an equal-diameter cross-section.

[0034] In use, first insert the two pipe bodies 2 to be welded into the inside of the adjusting block 3. The inclined surfaces of the pipe bodies 2 and the adjusting block 3 come into contact and push the adjusting block 3 outwards, causing the adjusting block 3 to drive the piston rod 11 to move outwards. Then, it pushes the hydraulic oil 5 to move out through the solenoid valve 9 to the oil inlet of the outer cylinder, and further pushes the piston 7 in the outer cylinder 6 to move outwards against the elastic force of the spring 8, facilitating the insertion of the pipe body 2. At the initial position, the correction sleeve 12 is located on the right side. The connection part of the two pipe bodies 2 is inserted into the correction sleeve 12 to achieve guidance. Through the action of the correction sleeve 12 on the pipe body 2, alignment is achieved. Then, multiple solenoid valves 9 are simultaneously closed, cutting off the hydraulic oil 5, fixing the position of the piston rod 11, and thus fixing the position of the adjusting block 3, realizing the use of the adjusting block 3 to limit the position of the pipe body 2. Then, the stepping motor operates to drive the threaded rod to rotate, and the rotation of the threaded rod drives the correction sleeve to move leftwards, causing the correction sleeve to leave the connection part of the two pipe bodies, facilitating the next welding operation.

[0035] The beneficial effects of the present invention are as follows:

[0036] 1. The present invention uses an adjusting block and a telescopic sliding device to adjust the butt joint positioning of two welded pipes, solving the problem that the pipes are prone to deviation during manual positioning and fixation. It not only has a simple and compact structure, but also has accurate positioning, further improving the welding efficiency.

[0037] 2. By arranging a correction sleeve, the correction sleeve is slidably connected to the mounting frame through an axial sliding adjustment mechanism, playing a role in guiding and positioning the welded pipes, further improving the convenience of welding.

[0038] The above-described embodiments are some embodiments of the present invention, rather than all embodiments. The detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention claimed, but merely represents the selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

Claims

1. A pipe welding positioning device, characterized in that, it includes a mounting frame, on which two mounting rings are installed. On each mounting ring, adjusting blocks that can slide radially along the mounting ring are symmetrically arranged. The adjusting blocks adjust their radial sliding amount through a telescopic sliding device and can be fixed at fixed positions on the mounting ring. One side of the inner end of the adjusting block is a wedge-shaped arc surface with a larger outer diameter and a smaller inner diameter, and the other side is an equal-diameter arc surface.

2. The pipe welding positioning device according to claim 1, characterized in that, a correction sleeve is also arranged on the mounting frame, and the correction sleeve is connected to the mounting frame through an axial sliding adjustment mechanism.

3. The pipe welding positioning device according to claim 1 or 2, characterized in that, the telescopic sliding device includes an inner cylinder fixedly arranged radially on the mounting ring and an outer cylinder connected to the oil outlet of the inner cylinder. A piston rod is arranged in the inner cylinder, and the outer end of the piston rod is connected to the adjusting block. An electromagnetic valve is arranged on the connecting pipe between the oil inlet of the outer cylinder and the oil outlet of the inner cylinder. A piston is arranged in the outer cylinder, and the piston is connected to the end of the outer cylinder through an elastic member at the oil outlet end of the outer cylinder.

4. The pipe welding positioning device according to claim 3, characterized in that, the elastic member is a spring.

5. The pipe welding positioning device according to claim 3, characterized in that, the outer cylinder is fixed on the mounting ring or other positions.

6. The pipe welding positioning device according to claim 1 or 2, characterized in that, the axial sliding adjustment mechanism includes a threaded rod arranged on the mounting frame and a correction sleeve bracket that is in screw-threaded engagement with the threaded rod through a screw thread pair. The threaded rod is driven by a driving device.

7. The pipe welding positioning device according to claim 6, characterized in that, the correction sleeve bracket is also in sliding fit with a guide rod installed on the mounting frame.

8. The pipe welding positioning device according to claim 2, characterized in that, both sides of the inner hole of the correction sleeve are variable-diameter cross-sections with a larger outer diameter and a smaller inner diameter, and the middle part is an equal-diameter cross-section.

9. The pipe welding positioning device according to claim 1 or 2, characterized in that, at least 3 adjusting blocks are installed on each mounting ring, and they are evenly arranged on the mounting ring.

10. The pipe welding positioning device according to claim 6, characterized in that, the driving device is a stepping motor.

Images