Method and device for assembling T-shaped weld joints of natural gas compressor pipeline of offshore platform

Abstract

The invention provides an assembly method and device suitable for a T-shaped welding seam of a natural gas compressor pipeline of an offshore platform, and the method comprises the steps that a main pipe fixing device and a branch pipe position adjusting device are split, arranged and stored, and the main pipe fixing device and the branch pipe position adjusting device are combined during use; the main pipe and the branch pipe are arranged on the main pipe fixing device and the branch pipe position adjusting device respectively to be fixed, the horizontal position and the vertical position of the branch pipe are adjusted by adjusting the branch pipe position adjusting device, and the branch pipe and the main pipe are subjected to weld joint assembly. The pipeline T-shaped welding seam assembling device has the beneficial effects that the pipeline T-shaped welding seam assembling device which has the multiple advantages of being high in universality, high in positioning precision, easy and convenient to operate, good in stability and the like is provided, and the problems that pipeline T-shaped assembling is poor in universality, low in positioning precision, complex in operation, insufficient in stability and the like are solved; and efficient and accurate assembly of pipelines with different pipe diameters is achieved, and then the welding quality and the working efficiency of T-shaped welding seams are improved.

Description

Technical Field

[0001] This invention relates to the field of natural gas compressor pipeline processing technology, and more specifically to a method and apparatus for assembling T-welds in natural gas compressor pipelines for offshore platforms. Background Technology

[0002] Traditional T-type pipeline assembly relies heavily on manual operation. In the confined environment of offshore oil platforms, workers must spend long hours using simple tools like rulers and plumb bobs, relying on their accumulated experience to meticulously position and adjust the main and branch pipes. The limited space on offshore platforms makes pipeline installation and routing far more complex than in open land environments. Pipeline assembly is highly susceptible to environmental and surrounding equipment influences, placing immense demands on worker skill and experience. Differences in operating techniques and judgment standards among workers lead to inconsistent assembly accuracy, making it difficult to guarantee stable welding quality and posing potential risks to the pipeline's safe operation later on. Furthermore, the diverse pipe diameters often require frequent changes to tooling to accommodate different diameters, significantly extending construction time and drastically increasing time costs. To better address the aforementioned issues, this invention provides a pipe T-weld assembly device with multiple advantages, including strong versatility, high positioning accuracy, simple operation, and good stability. This device solves the problems of poor versatility, low positioning accuracy, complex operation, and insufficient stability in existing pipe T-weld assembly technologies, enabling efficient and precise assembly of pipes of different diameters, thereby improving the welding quality and work efficiency of T-welds. Summary of the Invention

[0003] This invention overcomes the shortcomings of the prior art and provides a method and apparatus for assembling T-welds in natural gas compressor pipelines on offshore platforms.

[0004] A method for assembling T-type welds in natural gas compressor pipelines on offshore platforms includes: separating and storing the main pipe fixing device and the branch pipe position adjusting device; combining the main pipe fixing device and the branch pipe position adjusting device during use; fixing the main pipe and the branch pipe on the main pipe fixing device and the branch pipe position adjusting device respectively; adjusting the horizontal and vertical positions of the branch pipe by adjusting the branch pipe position adjusting device to assemble the branch pipe with the main pipe weld.

[0005] The T-weld assembly device for natural gas compressor pipelines on offshore platforms includes a main pipe fixing device and a branch pipe position adjusting device. The branch pipe position adjusting device is detachably installed on the main pipe fixing device, and the branch pipe position adjusting device is equipped with a branch pipe fixator.

[0006] The main pipe fixing device includes: a base, a fixed support rod, and a main pipe fixing block; there are two bases, which are symmetrically arranged on the left and right, and the two bases are connected by multiple fixed support rods. The main pipe fixing block is detachably mounted on the fixed support rod.

[0007] There are multiple main pipe fixing blocks, which are arranged in pairs on the same fixed support rod. Each main pipe fixing block includes a main pipe fixing part and a connecting part. The main pipe fixing part and the connecting part are fixedly connected. The main pipe fixing part is provided with a main pipe limiting groove, and the connecting part is provided with a first fixed through hole. The fixed support rod passes through the first fixed through hole for installation.

[0008] The branch pipe position adjustment device includes: a second fixing through hole is provided on the connecting part, and a fixing block connecting rod is provided in the second fixing through hole. The two oppositely arranged main pipe fixing blocks are fixedly connected by the fixing block connecting rod.

[0009] The branch pipe position adjustment device includes two horizontal adjustment devices and two vertical adjustment devices. The two horizontal adjustment devices are respectively set on the corresponding bases, and the two vertical adjustment devices are set on the moving parts of the corresponding horizontal adjustment devices. The moving parts of the vertical adjustment devices are equipped with branch pipe fixers.

[0010] The horizontal and vertical adjustment devices are telescopic motors. The housing of the horizontal adjustment device is provided with protrusions, which are slidably mounted on the groove of the base. The horizontal adjustment device and the base are fixedly connected by fasteners.

[0011] The branch pipe fixation device includes: a branch pipe fixation device connecting seat, a fixed support rod, and a branch pipe fixing block. The branch pipe fixation device connecting seat is fixedly mounted on the moving part of the corresponding vertical adjustment device. Two oppositely arranged branch pipe fixation device connecting seats are fixedly connected by the fixed support rod. The branch pipe fixing block is fixedly mounted on the fixed support rod, and the two branch pipe fixing blocks are arranged opposite each other.

[0012] The branch pipe fixing block is provided with a branch pipe limiting groove.

[0013] The beneficial effects of this invention are as follows: This application addresses the problems of the confined working environment of existing offshore oil platforms. It provides a pipe T-weld assembly device with multiple advantages, including strong versatility, high positioning accuracy, simple operation, and good stability. Compared with existing manual assembly, it solves the problems of poor versatility, low positioning accuracy, complex operation, and insufficient stability in existing pipe T-weld assembly technologies, achieving efficient and precise assembly of pipes of different diameters, thereby improving the welding quality and work efficiency of T-welds.

[0014] Based on this, this application utilizes a segmented device structure, making the overall device and the jointing method suitable for the confined working environment of offshore oil platforms. By disassembling the jointing device, the overall device avoids occupying too much space on the offshore platform. The device adopts a detachable structure, overcoming the difficulty of transporting main pipes on offshore platforms and eliminating the need for secondary hoisting operations, making it suitable for offshore platform applications. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the device; Figure 2 This is a top view of the device; Figure 3 This is a side view of the device; In the figure: 1. Main pipe fixing device; 101. Main pipe fixing block; 1011. Main pipe fixing part; 1012. Connecting part; 1013. First fixing through hole; 1014. Second fixing through hole; 102. Base; 103. Fixing support rod; 104. Fixing block connecting rod; 2. Branch pipe position adjusting device; 201. Horizontal adjusting device; 202. Vertical adjusting device; 3. Branch pipe fixer; 301. Branch pipe fixer connecting seat; 302. Branch pipe fixing block; 303. Connecting rod; 4. Fixing component. Detailed Implementation

[0016] Example The method for assembling T-type welds in natural gas compressor pipelines on offshore platforms includes: separating and storing the main pipe fixing device 1 and the branch pipe position adjusting device 2; combining the main pipe fixing device 1 and the branch pipe position adjusting device 2 during use; fixing the main pipe and the branch pipe on the main pipe fixing device 1 and the branch pipe position adjusting device 2 respectively; adjusting the horizontal and vertical positions of the branch pipe by adjusting the branch pipe position adjusting device 2; and assembling the branch pipe and the main pipe with welds.

[0017] This invention applies a method for assembling T-shaped welds in natural gas compressor pipelines on offshore platforms, employing a modular design for the main pipe fixing device 1 and the branch pipe position adjusting device 2. When not in use, the main pipe fixing device 1 and the branch pipe position adjusting device 2 are stored as components; when needed, they are assembled according to the specific requirements of the main pipe and branch pipe.

[0018] The T-type weld assembly device for natural gas compressor pipelines on offshore platforms includes a main pipe fixing device 1 and a branch pipe position adjusting device 2. The branch pipe position adjusting device 2 is detachably installed on the main pipe fixing device 1, and a branch pipe fixing device 3 is installed on the branch pipe position adjusting device 2.

[0019] The main pipe fixing device 1 includes: a base 102, a fixing support rod 103, and a main pipe fixing block 101; there are two bases 102, which are symmetrically arranged on the left and right sides, and the two bases 102 are connected by multiple fixing support rods 103. The main pipe fixing block 101 is detachably mounted on the fixing support rod 103.

[0020] There are multiple main pipe fixing blocks 101, which are arranged in pairs on the same fixed support rod 103. Each main pipe fixing block 101 includes a main pipe fixing part 1011 and a connecting part 1012. The main pipe fixing part 1011 and the connecting part 1012 are fixedly connected. The main pipe fixing part 1011 is provided with a main pipe limiting groove, and the connecting part 1012 is provided with a first fixed through hole 1013. The fixed support rod 103 is set through the first fixed through hole 1013.

[0021] The branch pipe position adjustment device 2 includes: a second fixing through hole 1014 is provided on the connecting part 1012, and a fixing block connecting rod 104 is provided in the second fixing through hole 1014. Two opposing main pipe fixing blocks 101 are fixedly connected by the fixing block connecting rod 104.

[0022] The branch pipe position adjustment device 2 includes two horizontal adjustment devices 201 and two vertical adjustment devices 202. The two horizontal adjustment devices 201 are respectively mounted on the corresponding base 102, and the two vertical adjustment devices 202 are mounted on the moving part of the corresponding horizontal adjustment device 201. The moving part of the vertical adjustment device 202 is provided with a branch pipe fixer 3.

[0023] The horizontal adjustment device 201 and the vertical adjustment device 202 are telescopic motors. The outer shell of the horizontal adjustment device 201 is provided with a protrusion. The protrusion of the outer shell of the horizontal adjustment device 201 is slidably set on the slide groove of the base 102. The horizontal adjustment device 201 and the base 102 are fixedly connected by the fastener 4.

[0024] The branch pipe fixation device 3 includes: a branch pipe fixation device connecting seat 301, a connecting rod 303, and a branch pipe fixing block 302. The branch pipe fixation device connecting seat 301 is fixedly mounted on the moving part of the corresponding vertical adjustment device 202. The two oppositely arranged branch pipe fixation device connecting seats 301 are fixedly connected by the connecting rod 303. The branch pipe fixing block 302 is fixedly mounted on the fixed support rod 103. The two branch pipe fixing blocks 302 are arranged opposite to each other.

[0025] The branch pipe fixing block 302 is provided with a branch pipe limiting groove.

[0026] The working principle of the device in this invention is as follows.

[0027] like Figure 1-3As shown. This device achieves the alignment of the main pipe and branch pipe through the cooperation of the main pipe fixing device 1 and the branch pipe position adjusting device 2.

[0028] The main pipe fixing device 1 uses the base 102 to bear the overall pressure. The two bases 102 are fixed by multiple fixed support rods 103 to form a complete base structure, which also supports the main pipe fixing block 101 and the branch pipe position adjustment device 2.

[0029] Furthermore, the main pipe fixing blocks 101 are arranged in pairs opposite each other, mounted on corresponding fixing support rods 103 to support the main pipe and limit its movement. To facilitate adjustment of the spacing between the main pipe fixing blocks 101, a second fixing through hole 1014 and a fixing block connecting rod 104 are also provided. The spacing between the two is further adjusted through the fixing block connecting rod 104, and the stress resistance is enhanced.

[0030] The branch pipe position adjustment device 2 uses a horizontal adjustment device 201 and a vertical adjustment device 202 to adjust the horizontal and vertical distances of the branch pipe, respectively. During installation, the outer shell of the horizontal adjustment device 201 is provided with a protrusion structure, which is embedded in the sliding groove of the base 102, allowing the two to slide relative to each other. During use, it is adjusted according to specific requirements and finally fixed by the fixing part 4.

[0031] In this embodiment, the branch pipe fixing connector 301 of the branch pipe fixing device 3 is nested on the moving part of the vertical adjustment device 202. In practice, it can be adjusted according to the situation, such as by using a connector for direct fixing. The branch pipe fixing block 302 is fixed to the branch pipe fixing connector 301 by the connecting rod 303. The connecting rod 303 can also effectively adjust the spacing of the branch pipe fixing blocks 302.

[0032] The specific operating steps for the T-weld assembly of natural gas compressor pipelines on offshore platforms include: S1. Assemble the main pipe fixing device 1 and the branch pipe position adjusting device 2 as needed; then set the main pipe of the corresponding size on the main pipe fixing device 1, and limit and fix it by the main pipe fixing block 101.

[0033] S2. Fix the branch pipe in the branch pipe fixing device 3; S3. Connect the main pipe fixing device 1 and the branch pipe position adjustment device 2. After initially adjusting the position between the main pipe and the branch pipe, use the operating instrument to control the horizontal adjustment device 201 and the vertical adjustment device 202 to fine-tune the position of the branch pipe. According to the pipeline assembly requirements, the horizontal position of the T-weld is determined by the horizontal adjustment device 201, and the lifting height is adjusted by the vertical adjustment device 202. The position information of the moving part of the vertical adjustment device 202 is fed back in real time by a high-precision displacement sensor to ensure that the end faces of the two pipelines reach the assembly position required by the design in the vertical direction, so that the error does not exceed ±0.3mm. S4. Use a weld inspection gauge to check the assembly of the pipes. If there are any deviations, make further adjustments based on the inspection data until the parameters meet the process requirements. S5. After the assembly inspection is qualified, perform tack welding.

[0034] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A method for assembling T-welds in natural gas compressor pipelines on offshore platforms, characterized in that: include: The main pipe fixing device and the branch pipe position adjustment device are set up and stored separately. When in use, the main pipe fixing device and the branch pipe position adjustment device are combined. The main pipe and the branch pipe are respectively fixed on the main pipe fixing device and the branch pipe position adjustment device. The horizontal and vertical positions of the branch pipe are adjusted by adjusting the branch pipe position adjustment device, so that the branch pipe and the main pipe are welded together.

2. An assembly device for T-type welded seams of natural gas compressor pipelines on offshore platforms, characterized in that: It includes a main pipe fixing device and a branch pipe position adjusting device. The branch pipe position adjusting device is detachably installed on the main pipe fixing device, and the branch pipe position adjusting device is equipped with a branch pipe fixator.

3. The T-weld assembly device for offshore platform natural gas compressor pipelines according to claim 2, characterized in that, The main pipe fixing device includes: a base, a fixed support rod, and a main pipe fixing block; there are two bases, which are symmetrically arranged on the left and right, and the two bases are connected by multiple fixed support rods. The main pipe fixing block is detachably mounted on the fixed support rod.

4. The T-weld assembly device for offshore platform natural gas compressor pipelines according to claim 3, characterized in that: There are multiple main pipe fixing blocks, which are arranged in pairs on the same fixed support rod. Each main pipe fixing block includes a main pipe fixing part and a connecting part. The main pipe fixing part and the connecting part are fixedly connected. The main pipe fixing part is provided with a main pipe limiting groove, and the connecting part is provided with a first fixed through hole. The fixed support rod passes through the first fixed through hole for installation.

5. The T-weld assembly device for offshore platform natural gas compressor pipelines according to claim 4, characterized in that, The branch pipe position adjustment device includes: a second fixing through hole is provided on the connecting part, and a fixing block connecting rod is provided in the second fixing through hole. The two oppositely arranged main pipe fixing blocks are fixedly connected by the fixing block connecting rod.

6. The T-weld assembly device for offshore platform natural gas compressor pipelines according to claim 5, characterized in that, The branch pipe position adjustment device includes two horizontal adjustment devices and two vertical adjustment devices. The two horizontal adjustment devices are respectively set on the corresponding bases, and the two vertical adjustment devices are set on the moving parts of the corresponding horizontal adjustment devices. The moving parts of the vertical adjustment devices are equipped with branch pipe fixers.

7. The T-weld assembly device for offshore platform natural gas compressor pipelines according to claim 6, characterized in that: The horizontal and vertical adjustment devices are telescopic motors. The housing of the horizontal adjustment device is provided with protrusions, which are slidably mounted on the groove of the base. The horizontal adjustment device and the base are fixedly connected by fasteners.

8. The T-weld assembly device for offshore platform natural gas compressor pipelines according to claim 6, characterized in that, The branch pipe fixation device includes: a branch pipe fixation device connecting seat, a connecting rod, and a branch pipe fixing block. The branch pipe fixation device connecting seat is fixedly mounted on the moving part of the corresponding vertical adjustment device. Two oppositely arranged branch pipe fixation device connecting seats are fixedly connected by the connecting rod. The branch pipe fixing block is fixedly mounted on the connecting rod, and the two branch pipe fixing blocks are arranged opposite each other.

9. The T-weld assembly device for offshore platform natural gas compressor pipelines according to claim 8, characterized in that: The branch pipe fixing block is provided with a branch pipe limiting groove.

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