A fixed support for comprehensive control of multi-degree-of-freedom displacement of pipelines

Abstract

This invention relates to a fixed support for comprehensively controlling the multi-degree-of-freedom displacement of a pipeline, comprising: a pipeline multi-degree-of-freedom displacement correction mechanism, a pipeline multi-degree-of-freedom displacement monitoring and control system, a pipeline fixing system, and an oil / gas pipeline. Along the radial direction of the pipeline, the oil / gas pipeline, the pipeline multi-degree-of-freedom displacement correction mechanism, and the pipeline fixing system are arranged coaxially and concentrically from the inside out. The pipeline multi-degree-of-freedom displacement correction mechanism corrects the position of the oil / gas pipeline through the extension and retraction of a hydraulic telescopic rod, thereby releasing pipeline stress. The pipeline fixing system secures the pipeline multi-degree-of-freedom displacement correction mechanism. The various modules of the pipeline multi-degree-of-freedom displacement monitoring and control system are respectively installed on the oil / gas pipeline and the pipeline fixing system, enabling real-time monitoring of the oil / gas pipeline and the pipeline fixing system, and control of the pipeline multi-degree-of-freedom displacement correction mechanism. Compared to existing technologies, this invention can accurately measure the displacement of the oil / gas pipeline, achieving correction of the axial, radial, and rotational displacements of the oil / gas pipeline, as well as detection of the displacement of the pipeline fixed support. It has advantages such as accurate measurement, timely correction, and verifiable data.

Description

Technical Field

[0001] This invention belongs to the field of pipeline transportation engineering technology, specifically, it relates to a fixed pier for comprehensively controlling the multi-degree-of-freedom displacement of pipelines. Background Technology

[0002] The temperature of the medium transported by buried oil and gas gathering and transportation pipelines is generally between 30 and 80℃. The temperature difference between the pipeline's construction and installation temperatures and its commissioning and operation temperatures can easily cause thermal expansion and generate thermal stress during commissioning and operation. To prevent the additional thermal stress from exceeding the allowable stress value and damaging connected pipe fittings and equipment, a suitable fixed pier must be designed to anchor the pipeline based on parameters such as temperature difference, pipe diameter, wall thickness, pressure, burial depth, and soil type, thus meeting the requirements for safe pipeline operation. Common fixed pier forms include rectangular, inverted T-shaped, single-well fixed piers, double-well fixed piers, wing-shaped, and bench-shaped piers. These fixed piers completely fix the pipeline, making it difficult to release stress caused by temperature changes, soil settlement, third-party interference, or other uncontrollable factors. This leads to stress concentration and pipeline deformation, increasing the load on pipeline welds and flanges within the station, and even causing anchor settlement and overturning problems, thus seriously endangering the normal operation of the pipeline and equipment. For example, at a long-distance pipeline station in Wenzhou, a large amount of waste soil and slag was piled up near the buried pipeline outside the station. Due to weather conditions, the waste soil and slag flowed above the pipeline, causing lateral and longitudinal compression on the buried pipeline outside the station. This resulted in stress concentration in the pipeline inside the station, which could not be released naturally, leading to situations such as displacement of some pipelines inside the station, slight arching and deformation of pipelines within the station, suspended valve supports, and tilting of vented pipelines. To solve these problems, there is an urgent need to design a fixed support that can comprehensively control the multi-degree-of-freedom displacement of the pipeline to achieve stress release. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this invention provides a fixed pier for comprehensive control of multi-degree-of-freedom displacement of pipelines. Using this fixed pier, the sinking of the fixed pier caused by uneven soil settlement, pipeline displacement and rotation caused by temperature changes, soil settlement and third-party factors can be monitored in real time. Then, based on the monitoring results, the multi-degree-of-freedom displacement of the pipeline can be automatically adjusted to achieve the purpose of pipeline stress release, thereby ensuring the safe operation of the pipeline.

[0004] To achieve the above objectives, the present invention adopts the following solution:

[0005] This invention relates to a fixed support for comprehensively controlling the multi-degree-of-freedom displacement of a pipeline, comprising: a pipeline multi-degree-of-freedom displacement correction mechanism, a pipeline multi-degree-of-freedom displacement monitoring and control system, a pipeline fixing system, and an oil / gas pipeline. Along the radial direction of the pipeline, the oil / gas pipeline, the pipeline multi-degree-of-freedom displacement correction mechanism, and the pipeline fixing system are arranged coaxially and concentrically from the inside out. The pipeline multi-degree-of-freedom displacement correction mechanism corrects the position of the oil / gas pipeline through the extension and retraction of a hydraulic telescopic rod, thereby releasing pipeline stress. The pipeline fixing system secures the pipeline multi-degree-of-freedom displacement correction mechanism. The various modules of the pipeline multi-degree-of-freedom displacement monitoring and control system are respectively installed on the oil / gas pipeline and the pipeline fixing system, enabling real-time monitoring of the oil / gas pipeline and the pipeline fixing system, and control of the pipeline multi-degree-of-freedom displacement correction mechanism.

[0006] Compared with the prior art, the present invention has the following beneficial effects:

[0007] (1) A fixed support for the integrated control of multi-degree-of-freedom displacement of the pipeline is installed on the oil and gas pipeline, which can monitor the settlement of the fixed support, pipeline displacement and rotation in real time. Based on the monitoring results, the device can adjust the pipeline displacement and rotation, thereby eliminating the damage that stress concentration may cause to the oil and gas pipeline;

[0008] (2) Each pipe straightening mechanism consists of 6 pipe straighteners, which are evenly distributed around the outer wall of the pipe in the circumferential direction to ensure that the pipe is subjected to uniform force and that there is no stress concentration caused by the straightening mechanism.

[0009] (3) Each set of pipe straighteners is composed of 3 hydraulic retractable outriggers hinged together. It has the advantages of light weight, small size, small motion inertia, fast response speed, long service life, infinite extension and retraction, and can realize displacement correction in various angles and directions.

[0010] (4) The pipeline displacement monitoring and control system is equipped with both pipeline displacement monitoring modules and fixed pier displacement monitoring modules, enabling accurate measurement and data storage for future reference of pipeline and fixed pier displacements. Simultaneously, it can transmit data back to the control center, achieving real-time monitoring, accurate determination of displacement causes, and timely handling to prevent serious pipeline safety accidents. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a fixed pier structure for comprehensive control of multi-degree-of-freedom displacement of pipelines.

[0012] Figure 2 This is a front view schematic diagram of a fixed pier structure for integrated control of multi-degree-of-freedom displacement of pipelines.

[0013] Figure 3 yes Figure 2 Axonometric drawing of the BB half section.

[0014] Figure 4yes Figure 2 Schematic diagram of the AA section.

[0015] Figure 5 yes Figure 2 View C diagram.

[0016] Figure 6 This is a flowchart illustrating the working principle of a fixed pier for comprehensive control of multi-degree-of-freedom displacement of pipelines.

[0017] Among them: 1. Pipeline multi-degree-of-freedom displacement correction mechanism, 101, corrector, 1011, hinge ball, 1012, hydraulic telescopic leg, 1013, support, 1014, pin, 102, pipe clamp, 103, bolt; 2. Pipeline multi-degree-of-freedom displacement monitoring and control system, 201, control module, 202, pipeline displacement monitoring module, 203, fixed pier displacement monitoring module; 3. Pipeline fixing system, 301, pipeline fixed pier, 302, correction mechanism cavity; 4. Oil and gas pipeline. Detailed Implementation

[0018] like Figures 1 to 6 As shown, the fixed support for comprehensively controlling the multi-degree-of-freedom displacement of a pipeline includes: a pipeline multi-degree-of-freedom displacement correction mechanism 1, a corrector 101 (hinged ball 1011, hydraulic telescopic leg 1012, support 1013), a pipe clamp 102, and a bolt 103; a pipeline multi-degree-of-freedom displacement monitoring and control system 2, a control module 201, a pipeline displacement monitoring module 202, and a fixed support displacement monitoring module 203; a pipeline fixing system 3, a fixed support 301, and a correction mechanism cavity 302; and an oil and gas pipeline 4. The pipeline multi-degree-of-freedom displacement correction mechanism 1 is coaxially installed with the oil and gas pipeline 4 to correct the displacement of the oil and gas pipeline 4; the pipeline fixing system 3 is coaxially installed with the oil and gas pipeline 4 to fix the pipeline multi-degree-of-freedom displacement correction mechanism 1; the various modules of the pipeline multi-degree-of-freedom displacement monitoring and control system 2 are respectively installed on the oil and gas pipeline 4 and the pipeline fixing system 3 to achieve real-time monitoring of the oil and gas pipeline 4 and the pipeline fixing system 3, and control of the pipeline multi-degree-of-freedom displacement correction mechanism 1.

[0019] There are two sets of pipeline multi-degree-of-freedom displacement correction mechanisms 1, located at both ends of the oil and gas pipeline 4. Each set of pipeline multi-degree-of-freedom displacement correction mechanisms 1 consists of 6 correctors 101, 1 pipe clamp 102, and 2 bolts 103. The pipe clamp 102 is located 150mm away from one end of the oil and gas pipeline 4, and the bolts 103 are located on both sides of the oil and gas pipeline 4. The 6 correctors 101 are welded to the pipe clamp 102 and are evenly distributed around the circumference of the oil and gas pipeline 4. Each corrector consists of one hinge ball 1011, three hydraulic telescopic legs 1012, and three supports 1013. The three supports 1013 are located at the three vertices of an equilateral triangle and are connected to the pipe clamp 102. The hydraulic telescopic legs 1012 are connected to the supports 1013 via a shaft pin 1014. The hinge ball 1011 is located directly above the center of the equilateral triangle formed by the three supports 1013. The three hydraulic telescopic legs 1012 are welded to the hinge ball 1011. The hinge ball 1011 is welded to the cavity 302 of the corrector mechanism to achieve multi-degree-of-freedom displacement correction of the oil and gas pipeline 4.

[0020] The control module 201 is located directly above the cavity 302 of the straightening mechanism. There are two sets of pipeline displacement monitoring modules 202, located at both ends of the oil and gas pipeline 4, with their outer sides aligned with the outer sides of the pipeline fixing pier 301. The fixing pier displacement monitoring modules 203 are located on both sides of the pipeline fixing pier 301, with one set located on one side of the pipeline fixing pier 301 at the junction of the pipeline fixing pier 301 and the cavity 302 of the straightening mechanism, and the other set symmetrically distributed.

[0021] The pipeline fixing block 301 is located on the original soil layer directly below the oil and gas pipeline 4. The straightening mechanism cavity 302 is coaxial with the oil and gas pipeline 4 and connected to the pipeline fixing block 301. This achieves the fixing effect on the pipeline multi-degree-of-freedom straightening mechanism 1.

[0022] Installation steps and working principle of a fixed pier for comprehensive control of multi-degree-of-freedom displacement of pipelines:

[0023] (1) There are two sets of pipeline multi-degree-of-freedom displacement correction mechanism 1, which are installed at both ends of the oil and gas pipeline 4. Each set of pipeline multi-degree-of-freedom displacement correction mechanism 1 consists of 6 correctors 101, 1 pipe clamp 102, and 2 bolts 103. The pipe clamp 102 is located 150mm away from one end of the oil and gas pipeline 4, and the bolts 103 are located on both sides of the oil and gas pipeline 4 to clamp the pipe clamp 102 to the oil and gas pipeline 4. The 6 correctors 101 are welded to the pipe clamp 102 and are evenly distributed around the circumference of the oil and gas pipeline 4. Each corrector consists of one hinge ball 1011, three hydraulic telescopic legs 1012, and three supports 1013. The three supports 1013 are located at the three vertices of an equilateral triangle and are connected to the pipe clamp 102 by welding. The hydraulic telescopic legs 1012 are connected to the supports 1013 by a pin 1014. The hinge ball 1011 is located directly above the center of the equilateral triangle formed by the three supports 1013. The three hydraulic telescopic legs 1012 are welded to the hinge ball 1011, and the hinge ball 1011 is welded to the cavity 302 of the corrector mechanism. This achieves multi-degree-of-freedom displacement correction of the oil and gas pipeline 4.

[0024] (2) The control module 201 is horizontally mounted above the straightening mechanism cavity 302 via bolts. There are two sets of pipeline displacement monitoring modules 202, horizontally mounted at both ends of the oil and gas pipeline 4 via bolts. There are two sets of fixed pier displacement monitoring modules 203, vertically mounted on both sides of the pipeline fixed pier 301 via bolts, located on one side of the pipeline fixed pier 301 at the junction of the pipeline fixed pier 301 and the straightening mechanism cavity 302. The control module 201 is connected to the pipeline displacement monitoring module 202 and the fixed pier displacement monitoring module 203 via control signal transmission cables. This enables displacement monitoring and data transmission of the oil and gas pipeline 4 and the pipeline fixed pier 301.

[0025] (3) The pipeline fixing block 301 is installed on the original soil layer directly below the oil and gas pipeline 4. The straightening mechanism cavity 302 is installed coaxially with the oil and gas pipeline 4 and is connected to the pipeline fixing block 301 by welding. This achieves the fixing effect on the pipeline multi-degree-of-freedom straightening mechanism 1.

[0026] (4) Working principle of the fixed pier for integrated control of multi-degree-of-freedom displacement of pipeline: After the installation of the fixed pier for integrated control of multi-degree-of-freedom displacement of pipeline is completed, the control module 201 will read the initial data from the pipeline displacement monitoring module 202 and the fixed pier displacement monitoring module 203 and store it as the original standard data. When the oil and gas pipeline 4 is in working state, the pipeline displacement monitoring system 2 monitors the position data of the oil and gas pipeline 4 and the pipeline fixed pier 301 in real time and transmits the data to the pipeline displacement control module 201. The pipeline displacement control module 201 will compare the data with the original standard data in real time. It will determine whether the oil and gas pipeline 4 has displacement and respond according to the magnitude of the displacement, controlling the multi-degree-of-freedom displacement correction mechanism 1 to adjust the oil and gas pipeline 4 to the initial state. For example, due to rainfall, the foundation of the pipeline fixing pier 301 may subside, causing displacement of the oil and gas pipeline 4. The pipeline displacement monitoring module 202 will immediately detect this displacement change and transmit the data signal to the control module 201. The control module 201 compares this data with the original standard data and finds a positive deviation in axial displacement of the oil and gas pipeline 4. The control module 201 then sends a command to the corrector 101, causing the upper hydraulic telescopic leg 1012 of the pipeline to shorten and the lower hydraulic telescopic leg 1012 to extend, thus offsetting the subsidence of the oil and gas pipeline 4 caused by the subsidence of the pipeline fixing pier 301 and restoring the oil and gas pipeline 4 to its initial state. When the displacement of the oil and gas pipeline 4 exceeds the safety margin, the control module 201 will transmit the location information and displacement data of the displaced oil and gas pipeline 4 back to the control center. The control center will respond according to the established plan, achieving effective management of the long-distance pipeline. At the same time, the control module 201 will also compare the data of the fixed pier displacement monitoring module 203 with the original standard data. When the displacement of the pipeline fixed pier 301 exceeds the installation margin, the control module 201 will transmit the position information and displacement data of the pipeline fixed pier 301 that has displaced back to the control center, so as to realize effective monitoring of the fixed pier 301.

Claims

1. A long distance pipeline displacement correction device comprising: The fixed pier for comprehensively controlling multi-degree-of-freedom displacement of a pipeline comprises a pipeline multi-degree-of-freedom displacement correction mechanism, a corrector, a hinge ball, a hydraulic telescopic leg, a support, a pipe clamp, a bolt, a pipeline displacement monitoring module, a fixed pier displacement monitoring module, a pipeline fixing system, a fixed pier and a correction mechanism lumen; an oil and gas pipeline; wherein the pipeline multi-degree-of-freedom displacement correction mechanism is coaxially installed with the oil and gas pipeline to correct the displacement of the oil and gas pipeline; the pipeline fixing system is coaxially installed with the oil and gas pipeline to fix the pipeline multi-degree-of-freedom displacement correction mechanism; the pipeline displacement monitoring module and the fixed pier displacement monitoring module are respectively installed on the oil and gas pipeline and the pipeline fixing system to monitor the oil and gas pipeline and the pipeline fixing system in real time and control the pipeline multi-degree-of-freedom displacement correction mechanism. The pipeline multi-degree-of-freedom displacement correction mechanism comprises two groups, which are located at two ends of the oil and gas pipeline; each group of the pipeline multi-degree-of-freedom displacement correction mechanism comprises six correctors, one pipe clamp and two bolts; the pipe clamp is located 150 mm away from one end of the oil and gas pipeline; the two bolts are located on both sides of the oil and gas pipeline; the six correctors are welded to the pipe clamp and are evenly distributed around the oil and gas pipeline; each corrector comprises one hinge ball, three hydraulic telescopic legs and three supports; the three supports are located at three vertices of an equilateral triangle and are connected to the pipe clamp; the hydraulic telescopic legs are connected to the supports through shaft pins; the hinge ball is located directly above the center of the equilateral triangle formed by the three supports; the three hydraulic telescopic legs are welded to the hinge ball; the hinge ball is welded to the correction mechanism lumen to correct the multi-degree-of-freedom displacement of the oil and gas pipeline.

2. The long convey pipe displacement correction device according to claim 1, characterized by: The control module is located directly above the correction mechanism lumen; the pipeline displacement monitoring module comprises two groups, which are located at two ends of the oil and gas pipeline and are aligned with the outside of the pipeline fixed pier; the fixed pier displacement monitoring module is located on both sides of the pipeline fixed pier and is located on one side of the pipeline fixed pier at the junction of the pipeline fixed pier and the correction mechanism lumen, and the other group is symmetrically distributed.

3. Long pipe displacement correction device according to claim 1 or 2, characterized in that: The pipeline fixed pier is located on the original soil layer directly below the oil and gas pipeline; the correction mechanism lumen is coaxial with the oil and gas pipeline and is connected to the pipeline fixed pier; the pipeline multi-degree-of-freedom correction mechanism is fixed.

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