A mobile in-pipe detector pulling test system and a test method thereof

Abstract

The present application belongs to the technical field of oil and gas pipeline internal detection, and discloses a mobile pipeline internal detector pulling test system and test method. The system is highly integrated with a pulling power assembly, a folding support assembly, a modular test pipeline, a hoisting mechanism and a control system on a heavy truck to form a complete mobile laboratory. The folding support assembly can be quickly unfolded to form a long-distance rigid support track. The test pipeline is spliced through quick connection clamps. The control system realizes remote control and real-time data transmission through a 5G / 4G network. The present application realizes a fundamental change from "detector seeking test equipment" to "test equipment seeking detector", has the advantages of quick deployment, flexibility, low cost, accurate testing, intelligent remote control and the like, effectively solves the problems of slow response, high cost and poor flexibility of traditional fixed pulling test devices, and is particularly suitable for pipeline on-site quick detection and verification requirements.

Description

Technical Field

[0001] This invention belongs to the field of oil and gas pipeline internal inspection technology, and specifically relates to a mobile pipeline internal detector pull test system and its test method. Background Technology

[0002] Pipelines play a crucial role in the long-distance transportation of oil and natural gas. However, due to the long-term high pressure, complex geological conditions, and harsh external environment, pipelines are susceptible to various defects such as corrosion from the transported medium, stress, construction damage, and natural disasters. These defects include corrosion pits, cracks, and deformation. Pipeline in-situ inspection technology, as an important in-service inspection method, can promptly detect pipeline defects, providing a basis for pipeline maintenance and repair, and is crucial for ensuring pipeline integrity. Before being officially put into use, pipeline in-situ detectors need to undergo tensile testing to verify and calibrate their performance, thus testing their ability to identify and calibrate man-made defects.

[0003] Currently, mainstream tensile testing equipment both domestically and internationally is permanently installed in a fixed location at a specific site (such as a detector commissioning center or maintenance base). It typically includes a dedicated testing pipeline, drive system, control system, and data acquisition unit. The system is completely fixed and cannot be moved; the detector inside the pipeline must be transported to this testing site for testing. However, the ultra-high-definition magnetic flux leakage (MFLC) testing equipment is a precision instrument. Long-distance transportation inevitably leads to damage to its electronic components due to bumps and vibrations. In practical applications, different pipeline projects may be located in different regions. If a fixed tensile testing device is used, each relocation requires significant manpower, resources, and time for disassembly, transportation, and reinstallation and commissioning of the equipment, impacting work efficiency, increasing costs, and resulting in lengthy deployment times. Therefore, the traditional fixed-base model cannot meet the rapid and dispersed response requirements for emergency testing and post-repair verification of pipelines.

[0004] In summary, there is an urgent need for a mobile pipeline detector traction test system and test method that is highly mobile and can quickly reach detector manufacturing sites, maintenance bases, pipeline inspection and construction sites, etc., and can quickly perform performance testing, verification and calibration on them. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a mobile pipeline in-situ detector traction test system and its test method, thereby achieving "mobile service" where "test equipment finds the detector" rather than "detector finds the test equipment," thus promoting the development of pipeline in-situ detector testing and evaluation technology towards on-site, precise, and efficient methods, which is of great significance for ensuring the safe operation of pipelines.

[0006] To achieve the above objectives, the present invention provides the following technical solution: First, this invention provides a mobile pipeline in-situ detector pull test system, including... Heavy-duty truck, operator's cab, traction powertrain, test piping assembly, folding support assembly, and lifting mechanism; The heavy-duty truck serves as the mobile load-bearing platform of the system. Its chassis has a hydraulic leveling function. The operating cab and traction power assembly are fixed at the front of the vehicle body. The test pipeline assembly and folding bracket assembly are stored at the rear of the vehicle body. The hoisting mechanism is located at the rear of the vehicle body. The operating room integrates a control system and a data acquisition and transmission module. The control system is used to control the traction power assembly to provide traction power, pull the detector in the pipeline to a preset speed and slide it towards the vehicle body in the test pipeline, and collect data through the data acquisition and transmission module to realize remote data interaction. The test pipeline assembly includes multiple test pipe sections, which are modular test pipelines, including standard pipe sections and prefabricated defective pipe sections. The defective pipe sections are used to simulate pipeline defects and to calibrate and determine the traction test data of the detectors inside the pipeline. The test pipe assembly and the folding bracket assembly have an unassembled state and an assembled state. In the unassembled state, the test pipe assembly and the folding bracket assembly are kept in a folded state and stored at the rear of the vehicle body. In the assembled state, the folding bracket assembly is hoisted and connected to the rear of the vehicle by a hoisting mechanism to form an unfolded state. In the unfolded state, it extends along the rear of the vehicle and is supported on the ground to form a support rail. The first end of the support rail is rigidly connected to the rear of the heavy truck body. Multiple sets of test pipe sections are coaxially connected and fixed on the support rail of the folding bracket assembly.

[0007] Further details: The folding bracket assembly includes a bracket base, a V-shaped support seat, a connecting plate, and support legs; Multiple sets of the bracket bases are connected to form a rigid rail by the connecting plate. One end of the assembled rigid rail is connected to the body of the heavy truck. The disassembled sets of the bracket bases are stacked on the vehicle body from bottom to top. The number of bracket bases is set according to the length of the test pipe. The V-shaped support is fixed on the bracket base and is used to support the test pipe and limit its movement. Each set of bracket bases shall be provided with at least one set of V-shaped support. The support legs are located below the support base and extend to support the ground in the assembled state. Each set of support bases has at least one set of support legs below it.

[0008] Further configuration: The test pipeline assembly also includes a positioning base and a quick-connect clamp, wherein the positioning base is fixedly connected to the support base, and the test pipe sections are connected by quick-connect clamps.

[0009] Further configuration: The traction power assembly includes a winch, a traction rope, and a guide wheel. The winch is a motor-driven winch. The traction rope is evenly wound around the drum of the winch. The guide wheel is a lifting guide wheel used to adjust the direction of the traction rope.

[0010] Further configuration: The hoisting mechanism is located at the rear of the heavy truck and is used to hoist and complete the laying and dismantling of the test pipe section, as well as the unfolding and stacking of the folding bracket assembly, and to accurately hoist the internal detector to the starting port of the pipeline and remove the detector from the end port of the pipeline after the pulling is completed.

[0011] Further configuration: The control system includes an equipment operation control module, a status monitoring module, and a data management module; The equipment operation control module sets test parameters, issues commands, processes all input signals, and outputs control signals to the traction power assembly through the main control computer to realize automatic traction and start / stop. The status monitoring module can display the real-time operating status of the entire system and the detectors inside the pipeline within the test pipeline, including traction force, traction distance, and real-time speed, to prevent overload, overspeed, and overtravel. The data acquisition and transmission module communicates with the remote technical service center via a 5G or 4G network to enable remote setting of test parameters, remote start and monitoring of the test process, and real-time transmission and collaborative diagnosis of test data.

[0012] Secondly, the present invention provides a test method for the above-mentioned mobile pipeline internal detector pull test system, the test method comprising the following steps: Mobile transport: Driving a heavy truck equipped with the system to the work site; On-site deployment: Activate the heavy-duty truck's hydraulic automatic leveling system to level the vehicle body; Frame assembly: Operate the hoisting mechanism to unfold the folding frame assembly to form a support track; Pipeline installation: Hoist and splice the test pipe section onto the support rail; Equipment installation: Insert the in-pipe detector into the inlet of the test pipe section and connect it to the traction rope of the traction power assembly; Remote testing: The test is started via a remote connection. The traction power assembly moves the detector inside the traction pipeline within the test pipe section, and the test data is collected and transmitted through the data acquisition and transmission module. Data analysis: The control system automatically generates test reports containing traction force-displacement curves, signal response analysis, and defect identification results for data calibration and judgment; System recovery: After the test is completed and deemed qualified, the connecting bolts on the test pipe section and the folding bracket assembly are manually removed, and the hoisting mechanism is operated to recover the test pipe section and the folding bracket assembly.

[0013] Further configuration: In the remote testing step, the operator sets the test parameters and issues a start command at the remote technical service center. After receiving the command, the control system automatically controls the traction power assembly to complete the traction test according to the set parameters and transmits the "tension-speed-displacement" curve and detector signal data back in real time.

[0014] Compared with the prior art, the present invention has the following advantages: 1. This invention integrates all the equipment required for testing onto a heavy-duty truck, forming a highly integrated mobile pipeline detector testing system. The system adopts a standard integrated modular design, integrating four major functional modules—foldable bracket, self-contained hoisting equipment, multi-specification pipeline storage, and remote intelligent control—on a single vehicle platform, forming a "mobile laboratory" with complete mobility. This fundamentally overturns the traditional fixed mode of "detectors searching for testing equipment," completely eliminating dependence on fixed testing sites and becoming a "mobile guardian" to ensure the safe operation of pipelines.

[0015] 2. The testing system of this invention has complete mobility and can quickly reach any required location such as pipeline stations, valve chambers, and emergency repair sites, reducing the traditional deployment waiting time of several weeks or even months to several hours, greatly improving the response speed, meeting the urgent needs of sudden detection and rapid verification, significantly reducing time costs, and saving the high transportation and insurance costs of detectors traveling to and from fixed test sites, reducing on-site manpower mobilization and external equipment rental costs, and significantly reducing testing costs.

[0016] 3. When the test system of the present invention is deployed on site, the foldable support assembly is quickly unfolded by the hoisting mechanism, and the modular test pipe sections are assembled by quick connecting clamps, which realizes the rapid construction and recovery of the test system, and the work efficiency is multiplied. Furthermore, it can reduce the dependence on highly skilled operators on site through remote intelligent control, and realize the sharing and efficient utilization of back-end expert resources.

[0017] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the overall system for the vehicle-mounted pipeline in-situ detector pull test of the present invention is shown; Figure 2 A schematic diagram of the piping assembly of the present invention is shown; Figure 3 A schematic diagram of the system's operating state according to the present invention is shown; Figure 4 A schematic diagram of the unfolded state of the folding bracket assembly of the present invention is shown; Figure 5 A schematic diagram of the test tube section fixing of the present invention is shown; Figure 6 A schematic diagram of the foldable bracket assembly of the present invention in its stowed state is shown. Figure 7 A flowchart of the test method of the present invention is shown.

[0020] In the diagram: 1. Heavy truck; 2. Operator's cab; 3. Control system; 4. Data acquisition and transmission module; 5. Traction power assembly; 51. Winch; 52. Traction rope; 53. Guide wheel; 6. Test pipeline assembly; 61. Positioning base; 62. Test pipe section; 63. Connecting clamp; 7. Folding bracket assembly; 71. Bracket base; 72. V-shaped support seat; 73. Connecting plate; 74. Support leg; 75. Pipe clamp; 8. Lifting mechanism. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0023] First, the present invention provides a mobile pipeline detector traction test system, which integrates all the equipment required for the test (power, traction, hoisting, support, control, data acquisition and transmission, etc.) into a vehicle-mounted design on a heavy truck, thereby enabling the rapid and flexible transfer of the test system.

[0024] like Figure 1 As shown, the system mainly includes a heavy truck 1 and an operator's cab 2, a control system 3, a data acquisition and transmission module 4, a traction power assembly 5, a test pipeline assembly 6, a folding bracket assembly 7, and a lifting mechanism 8, all mounted on the heavy truck 1. The chassis of the heavy truck 1 has a hydraulic automatic leveling function. The traction power assembly 5 is used to provide traction power. The test pipeline assembly 6 is used to store modular test pipelines. The folding bracket assembly 7 has a retracted state and an unfolded state. The lifting mechanism 8 is used to lift the test pipelines and the folding bracket assembly 7. In this embodiment, the heavy-duty truck 1 serves as the mobile carrier platform of the system. It is a heavy-duty semi-trailer with strong load-bearing capacity and stable chassis to meet the system's movement and transportation needs. It includes the truck head and the truck body. The truck body space can accommodate the reasonable arrangement of test equipment, pipelines, and tools. It not only transports all equipment but also provides an installation foundation for other modules. The front end is equipped with the operating cab 2 and the traction power assembly 5. The rear end is equipped with the test pipeline assembly 6, the folding bracket assembly 7, and the hoisting mechanism 8. The chassis of the truck body has a hydraulic automatic leveling function, which can achieve precise leveling within a large span range, providing a horizontal benchmark for precision testing and eliminating test errors caused by uneven foundations. In this embodiment, the hoisting mechanism 8 is a hydraulic folding arm crane and a hydraulic control module. Its boom working range can completely cover the entire length of the test pipeline assembly 6 and the fully unfolded folding support assembly 7. It is used to complete all hoisting operations such as unfolding and folding the folding support, laying and dismantling the test pipeline, as well as accurately hoisting the internal detector to the starting port of the pipeline and taking the detector out from the end port of the pipeline after the pulling is completed.

[0025] like Figure 2 As shown, the test pipeline assembly 6 includes a positioning base 61, a test pipe section 62, and a quick-connect clamp 63. The positioning base 61 is fixedly connected to the support base. The test pipe section 62 is designed as a modular test pipeline, and multiple test pipe sections 62 are connected by quick-connect clamps 63. In this embodiment, the test pipeline assembly 6 is located at the rear of the heavy truck 1. Considering the limited space on the vehicle, the test pipe section 62 is designed as a modular pipe section with a short length and key features, including standard pipe sections and pipe sections with artificially prefabricated defects. The length of a single pipe section is usually between 1 and 3 meters, and standardized connection interfaces are machined at both ends. The standard pipe section is used to form the main body of the test pipeline, and the defective pipe section has standard artificial defects prefabricated at specific locations on its pipe wall for calibrating and verifying the performance of the detector. These defects simulate common damage that may occur in oil and gas pipelines during use, including but not limited to corrosion pits, mechanical dents, axial / circumferential cracks, and abnormal circumferential welds. The size, shape, and depth of all defects are precisely machined according to relevant standards or industry consensus to ensure the accuracy, repeatability, and comparability of the test results. In this embodiment, the positioning base 61 is a frame structure with mounting holes at both ends and the middle for connection with the support base. It is firmly fixed by high-strength bolts. Its surface is provided with multiple positioning grooves arranged regularly along the length direction. The positioning grooves are preferably V-shaped or arc-shaped grooves that fit the outer wall of the test tube section 62. They are used to fasten the test tube section 62 to the positioning base 61. According to the actual testing needs, the mobile laboratory can be equipped with and carry tube sections of a specific size before departure. When it is necessary to splice the tube sections, they can be quickly connected by using the standardized interfaces at both ends with quick-connect clamps 63. During installation, they can be quickly hoisted, spliced, and fixed on the folding support assembly 7 by the hoisting mechanism 8.

[0026] like Figure 3 As shown, the traction power assembly 5 includes a winch 51, a traction rope 52, and a guide wheel 53. The winch 51 is a motor-driven winch, and the guide wheel 53 is a liftable guide wheel used to adjust the direction of the traction rope 52. In this embodiment, the winch 51 is a motor-integrated winch, whose drive motor is integrated inside the drum or arranged coaxially and compactly. It can drive the drum to rotate forward, reverse, and stop. By winding and unwinding the traction rope 52, it provides a stable pulling force to drive the detector to move in the pipeline. In this embodiment, the traction rope 52 is a high-strength, non-extension galvanized steel wire rope. One end of the rope is fixed to the drum of the winch 51, and the other end is guided to the test pipe through the guide wheel 53 and finally connected to the detector inside the pipe to be tested. The traction force is transmitted to the detector inside the pipe and serves as a carrier for the tension sensor, providing real-time, high-precision force and displacement signals to the control system 3. In this embodiment, the guide wheel 53 is used to dynamically adjust the height and angle of the exit point of the traction rope 52. During operation, the position and height of the guide wheel 53 are adjusted manually or electrically to ensure that the lead-out direction of the traction rope 52 is strictly parallel or coaxial with the central axis of the test tube section 62 laid on the folding bracket assembly 7.

[0027] like Figure 3 As shown, the folding bracket assembly 7 includes a bracket base 71, a V-shaped support base 72, a connecting plate 73, multiple sets of support legs 74, and a pipe clamp 75. The multiple sets of bracket bases 71 are detachably connected to each other through the connecting plate 73. In this embodiment, during transportation, multiple sets of support bases 71 in the folded state are stacked on the truck bed. When it is necessary to unfold and assemble, the connecting plate 73 is placed at the end joint of the support base 71. High-strength bolts are used to pass through the pre-drilled holes on the connecting plate 73 and the support base 71 to fasten the multiple sets of independent support bases 71 into a whole, forming a continuous rigid support track that extends along the rear of the vehicle and supports the ground with a length of up to 30-40m. The first end of the rigid support track is connected to the truck bed of the heavy truck 1 by high-strength bolts to ensure that it has sufficient strength and rigidity to support the long-distance pipeline and resist deformation.

[0028] like Figure 4 The diagram shows the unfolded state of the folding bracket assembly 7. Multiple sets of support legs 74 are located below the bracket base 71 and extend to support the ground when in use. In this embodiment, after the support base 71 is unfolded and put into use, multiple sets of support legs 74 are evenly distributed under the unfolded support base 71 by bolts or hinges. Each set of support legs 74 is a telescopic structure, which can be telescopically extended by hydraulic cylinders, electric push rods or mechanical screws. When in use, the support legs 74 are in the extended state and supported on the ground. During the test, the support legs 74 will bear most of the weight from the pipeline and the reaction force during the test, which can effectively reduce the load on the truck suspension system.

[0029] like Figure 5 As shown, the V-shaped support seat 72 is set on the bracket base 71 to support and fix the test pipe section 62. The pipe clamp 75 works with the V-shaped support seat 72 to fix the spliced ​​test pipe section 62 on the bracket base 71. In this embodiment, the V-shaped support base 72 is fixedly installed on the upper surface of the unfolded folding bracket 71 and is evenly distributed along the length direction. The top of the support base 72 is provided with a V-shaped or arc-shaped groove to adapt to the outer diameter of the test pipe section 62 to be supported. The pipe clamp 75 is specifically used to quickly fix the spliced ​​pipe to be tested onto the bracket base 71. It is evenly distributed on the bracket body and works in conjunction with the V-shaped support base 72 to prevent the pipe from rolling or shifting during the test, ensuring alignment accuracy and experimental safety.

[0030] like Figure 6 The image shown is a diagram of the folded bracket assembly 7 in its collapsed state. In this embodiment, when not in use, multiple sets of bracket bases 71 are stacked on the carriage and connected and fixed by connecting bolts, and the support legs 74 are completely retracted above the bracket body, without occupying extra space.

[0031] like Figure 1 As shown, the control room 2 integrates a control system 3 and a data acquisition and transmission module 4. The data acquisition and transmission module 4 communicates with the remote technical service center based on a 5G or 4G network to realize remote setting of test parameters, remote start and monitoring of the test process, and real-time transmission and collaborative diagnosis of test data. In this embodiment, the control room 2 is a sealed, soundproof, and temperature-controlled cabin that provides operators with a comfortable and quiet working environment. It integrates a human-machine interface, a main control computer, communication equipment, etc., and serves as the physical carrier of the control system 3 and the data acquisition and transmission module 4 to achieve remote and intelligent operation. The control system 3 is used to control the operation of the traction power assembly 5 and mainly plays the roles of equipment operation control, status monitoring, and data management. It also realizes remote data interaction through the data acquisition and transmission module 4. Specifically, the equipment operation control is achieved by setting test parameters and issuing commands through the main control computer, processing all input signals, and outputting control signals to the traction power assembly 5 to realize automatic traction and start / stop. Operators only need to set the parameters to complete the entire test process with one click, which greatly reduces the intensity of manual operation and human error and improves test efficiency. The status monitoring can display the operating status of the entire system and the detector in the test pipeline in real time, including traction force, traction distance, real-time speed, etc., to prevent overload, overspeed, and overtravel. The data management records and stores test parameters and process data. The data acquisition and transmission module 4 is responsible for receiving and processing multi-channel data from the tension sensor, speed sensor, and detector itself.

[0032] Secondly, the present invention provides a test method for the above-mentioned mobile pipeline internal detector pull test system: like Figure 7 As shown, the test method for the mobile pipeline in-situ detector pull test system also includes the following steps: S1. Motor transport: Driving a heavy truck 1 equipped with the testing system to the work site; S2. On-site deployment: Activate the hydraulic automatic leveling system of the heavy truck to level the vehicle body; S3. Bracket Assembly: Operate the hoisting mechanism 8 to unfold the folding bracket assembly 7 to form a support track; S4. Pipeline installation: Hoist and splice the test pipe section 62 onto the support rail; S5. Equipment installation: Insert the pipeline detector into the inlet of the test pipe section 62 and connect it to the traction rope 52 of the traction power assembly 5; S6. Remote test: The test is started via remote connection. The traction power assembly 5 pulls the detector in the pipeline to move within the test pipe section 62. At the same time, the test data is collected and transmitted through the data acquisition and transmission module 4. S7. Data Analysis: The control system automatically generates test reports containing traction force-displacement curves, signal response analysis, and defect identification results for data calibration and judgment. S8. System Recovery: After the test is completed and deemed qualified, manually remove the connecting bolts on the test pipe section and the folding bracket assembly 7, and manually remove the connecting bolts on the test pipe section 62 and the folding bracket assembly 7, and operate the hoisting mechanism 8 to recover the test pipe section 62 and the folding bracket assembly 7.

[0033] In step S6, the operator sets the test parameters and issues a start command at the remote technical service center. After receiving the command, the control system 3 automatically controls the traction power assembly 5 to complete the traction test according to the set parameters and transmits the "tension-speed-displacement" curve and detector signal data back in real time.

[0034] In accordance with the above-mentioned test methods, this embodiment uses a φ323mm internal magnetic flux leakage detector to perform performance testing and verification.

[0035] S1. Mobile Transportation: The operator drives an integrated heavy-duty truck system to a natural gas pipeline company's operating station. The total weight of the vehicle does not exceed the road weight limit, the folding bracket 71 is in the retracted state, the lifting mechanism 8 boom is retracted and secured, and all equipment is locked to the truck, complying with road traffic safety regulations.

[0036] S2. On-site deployment: S21. Vehicle Positioning: The vehicle is parked at the pre-selected location; S22. Vehicle leveling: Activate the heavy-duty truck's hydraulic automatic leveling system to level the vehicle body.

[0037] S3. Frame assembly: On-site support personnel unfold the frame base 71 by controlling the hoisting mechanism 8. The frame sections are connected by connecting plates 73 and extend towards the rear of the vehicle, eventually forming a rigid support track with a length of 40 meters. Each frame section is stably supported on the ground by support legs 74.

[0038] S4. Piping Installation: S41. The operator operates the remote control of the hoisting mechanism 8 to rotate the boom to the test pipe assembly 6. According to the requirements of this test plan, the operator sequentially hoists out a standard straight pipe section with an inner diameter of 323 mm and three pipe sections with artificial defects (defect types include: corrosion pits with a wall thickness of 20%, pits with an OD of 5%, and a machining mark). S42. The boom precisely places the pipe section onto the V-shaped support seat 72 of the folding bracket 71. The pipe sections are connected by quick-connect clamps 63. The operator only needs to insert the sealing ring, align the flange, and then tighten the bolts on the clamp with a hydraulic torque wrench. The connection time for a single point does not exceed 5 minutes. S43. The pipeline sequence is as follows: inlet straight pipe section (10 meters) → corrosion pit pipe section (5 meters) → straight pipe section (5 meters) → pitted pipe section (5 meters) → straight pipe section (5 meters) → grooved pipe section (5 meters) → outlet straight pipe section (5 meters).

[0039] S5. Equipment Installation: S51. After the pipeline splicing is completed, the operator operates the hoisting mechanism 8 and uses a special sling to smoothly lift the φ323mm magnetic flux leakage detector and send the detector into the inlet end of the test pipeline until it is completely inside the pipeline. S52. Reliably connect the end of the traction rope 52 of the winch 51 to the traction head of the detector through the guide wheel 53; S53. Connect the detector's own signal cable to the interface box of the data acquisition and transmission module 4.

[0040] S6. Remote Testing: S61. System Power-On: Start the onboard diesel generator to supply power to the entire system; S62. Network Connection: After the system is powered on, the remote communication gateway automatically connects to the 5G network and establishes a secure VPN tunnel with the technical service center located thousands of miles away; S63. Remote Session Startup: The operator located in the technical center logs into the system through a dedicated client software on a computer. After security authentication, the operator interface displays the live feed from the high-definition camera in the control room 2. S64. Remote Setup and Startup: After the remote operator checks that the system status is normal, they set the test parameters in the software: traction speed: 1.0 m / s, test stroke: 45 meters (slightly longer than the total pipe length to ensure complete passage), data sampling rate: 1000Hz. After setting, the operator clicks the "Start" button in the software. S65. Data Synchronization Acquisition and Remote Transmission: The start command is sent to the local PLC via the network. The PLC controls the frequency converter to drive the winch 51 to run at the set speed. The tension sensor and displacement sensor collect traction force and stroke data in real time. The data acquisition unit synchronously receives these data and the raw signal output by the magnetic flux leakage detector; While all data is cached locally, it is transmitted in real time and continuously to the server at the remote technology center via a high-speed 5G network.

[0041] S7. Data Analysis: After the test is completed, the system will automatically stop, a prompt will pop up on the remote operator interface, the data will be automatically packaged and sent back to the central server, and the control system 3 will automatically generate a preliminary test report containing force-displacement curves, signal response analysis, and defect identification results for data calibration and judgment.

[0042] S8. System Recovery: After the test is deemed qualified, the operator notifies the on-site personnel that the test is over. The on-site personnel operate the hoisting mechanism 8 and tools to reverse the steps of S5, S4 and S3, disassemble the pipe connection, hoist the pipe section back to the storage area, hoist out the detector, and finally retract the support base 71.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mobile pipeline in-situ detector tensile testing system, characterized in that, Includes a heavy truck (1), an operator's cab (2), a traction powertrain (5), a test pipeline assembly (6), a folding support assembly (7), and a lifting mechanism (8); The heavy truck (1) serves as the mobile carrier platform of the system. Its chassis has a hydraulic leveling function. The operating room (2) and the traction power assembly (5) are fixed at the front end of the vehicle body. The test pipeline assembly (6) and the folding bracket assembly (7) are stored at the rear end of the vehicle body. The hoisting mechanism (8) is located at the rear end of the vehicle body. The operating room (2) integrates a control system (3) and a data acquisition and transmission module (4). The control system (3) is used to control the traction power assembly (5) to provide traction power, pull the detector in the pipeline to a preset speed and slide it towards the rear of the vehicle body in the test pipeline, and collect data through the data acquisition and transmission module (4) to realize remote data interaction. The test pipeline assembly (6) includes multiple test pipe sections (62). The test pipe section (62) is a modular test pipeline, including standard pipe sections and defective pipe sections with artificial prefabrication. The defective pipe sections are used to simulate pipeline defects and to calibrate and determine the traction test data of the detector inside the pipeline. The test pipe assembly (6) and the folding bracket assembly (7) have an unassembled state and an assembled state. In the unassembled state, the test pipe assembly (6) and the folding bracket assembly (7) are kept in a folded state and stored at the rear of the vehicle body. In the assembled state, the folding bracket assembly (7) is hoisted and connected to the unfolded state by the hoisting mechanism (8). In the unfolded state, it extends along the rear of the vehicle and is supported on the ground to form a support rail. The first end of the support rail is rigidly connected to the rear of the heavy truck (1). Multiple sets of test pipe sections (62) are coaxially connected and fixed on the support rail of the folding bracket assembly (7).

2. The mobile pipeline in-situ detector tensile testing system according to claim 1, characterized in that, The folding bracket assembly (7) includes a bracket base (71), a V-shaped support seat (72), a connecting plate (73), and a support leg (74). Multiple sets of the bracket bases (71) are connected to form a rigid track through the connecting plate (73). One end of the assembled rigid track is connected to the body of the heavy truck (1). Multiple sets of the bracket bases (71) after disassembly are stacked on the vehicle body from bottom to top. The number of bracket bases (71) is set according to the length of the test pipe. The V-shaped support (72) is fixed on the bracket base (71) to support the test pipe and limit its movement. Each bracket base (71) is provided with at least one set of V-shaped support (72). The support leg (74) is located below the bracket base (71) and extends to support the ground in the assembled state. Each bracket base (71) has at least one set of support legs (74) below it.

3. The mobile pipeline internal detector tensile testing system according to claim 2, characterized in that, The folding support assembly (7) also includes pipe clamps (75), which are U-shaped and supported by steel round rods. Both ends are connected to the two sides of the V-shaped support seat (72) by screws. They are used to fix the spliced ​​test pipe on the folding support assembly (7) to prevent the test pipe from moving axially during the traction test. The number of pipe clamps (75) is the same as that of the V-shaped support seat (72).

4. The mobile pipeline internal detector tensile testing system according to claim 1, characterized in that, The test pipeline assembly (6) also includes a positioning base (61) and a quick-connect clamp (63), wherein the positioning base (61) is fixedly connected to the support base (71), and the test pipe sections (62) are coaxially connected through the quick-connect clamp (63).

5. The mobile pipeline internal detector tensile testing system according to claim 1, characterized in that, The traction power assembly (5) includes a winch (51), a traction rope (52), and a guide wheel (53). The winch (51) is a motor-driven winch. The traction rope (52) is evenly wound on the drum of the winch. The guide wheel (53) can be raised and lowered along the sliding grooves on both sides to adjust the lead-out direction of the traction rope (52).

6. The mobile pipeline internal detector pull test system according to claim 1, characterized in that, The control system (3) includes an equipment operation control module, a status monitoring module, and a data management module; The equipment operation control module sets test parameters, issues commands, processes all input signals, and outputs control signals to the traction power assembly through the main control computer to realize automatic traction and start / stop. The status monitoring module can display the real-time operating status of the entire system and the detectors inside the pipeline within the test pipeline, including traction force, traction distance, and real-time speed, to prevent overload, overspeed, and overtravel.

7. The mobile pipeline internal detector tensile testing system according to claim 1, characterized in that, The data acquisition and transmission module (4) communicates with the remote technical service center based on the 5G / 4G network to realize the remote setting of test parameters, the remote start and monitoring of the test process, and the real-time transmission and collaborative diagnosis of test data.

8. The mobile pipeline internal detector tensile testing system according to claim 1, characterized in that, The hoisting mechanism (8) is located at the rear of the heavy truck (1) and is used to hoist and complete the laying and dismantling of the test pipe section (62), as well as the unfolding and stacking of the folding bracket assembly (7), and to hoist the internal detector to the starting port of the pipeline and remove the detector from the end port of the pipeline after the pulling is completed.

9. A test method for a mobile pipeline internal detector pull test system as described in any one of claims 1-8, characterized in that, Includes the following steps: Motor transport: Arrive at the work site by driving a heavy truck (1) equipped with the system; On-site deployment: Start the hydraulic automatic leveling system of the heavy truck (1) to level the vehicle body; Bracket assembly: Operate the hoisting mechanism (8) to unfold the folding bracket assembly (7) to form a support track; Pipeline installation: hoist and splice the test pipe section (62) onto the support rail; Equipment installation: Insert the in-pipe detector into the inlet of the test pipe section (62) and connect it to the traction rope (52) of the traction power assembly (5); Remote testing: The test is started via remote connection. The traction power assembly (5) pulls the detector inside the pipeline to move within the test pipe section (62), and at the same time, the test data is collected and transmitted through the data acquisition and transmission module (4). Data analysis: The control system (3) automatically generates a test report containing traction force-displacement curves, signal response analysis, and defect identification results for data calibration and judgment; System recovery: After the test is completed and qualified, the connecting bolts on the test pipe section (62) and the folding bracket assembly (7) are manually removed, and the hoisting mechanism (8) is operated to recover the test pipe section (62) and the folding bracket assembly (7).

10. The method for conducting a tensile test on a mobile pipeline internal detector according to claim 9, characterized in that, In the remote testing step, the operator sets the test parameters and issues a start command at the remote technical service center. After receiving the command, the control system (3) automatically controls the traction power assembly (5) to complete the traction test according to the set parameters and transmits the detection curve and detector signal data back in real time.

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