Pipe damage condition simulation test device for deepwater underwater production system

Abstract

The application relates to the technical field of oil and gas pipeline transportation, in particular to a pipeline damage working condition simulation test device for a deepwater underwater production system. The device comprises a water conveying mechanism for conveying liquid to a box body; a first simulation mechanism comprising a first pipeline and a leakage control assembly, the leakage control assembly being arranged on the box body and connected with the first pipeline; a second simulation mechanism comprising a second pipeline and a driving piece, the driving piece being arranged on the second pipeline to drive the liquid in the box body to flow in the box body and the second pipeline; a third simulation mechanism comprising a third pipeline and a detection piece, the detection piece being used for detecting damage information of the third pipeline and temperature information of the liquid; and a gas conveying mechanism in communication with the first pipeline and the third pipeline to convey gas into the first pipeline and the third pipeline. Through linkage of the mechanisms, the composite working conditions of the liquid environment, liquid circulation, gas leakage and pipeline damage can be simulated simultaneously, and the accuracy of test data of the simulation test device is improved.

Description

Technical Field

[0001] This application relates to the field of oil and gas pipeline transportation technology, and in particular to a pipeline damage condition simulation test device for deep-water subsea production systems. Background Technology

[0002] Subsea production systems are core facilities for offshore oil and gas development, primarily used for the collection, processing, and transportation of oil and gas from the seabed. Pipelines, as key components connecting subsea production systems to land-based or offshore platforms, bear the responsibility of transporting oil and gas under high pressure and high temperature. These pipelines are subjected to complex environmental conditions such as high pressure, corrosion, and ocean currents over long periods, making them prone to leaks or structural damage.

[0003] In related technologies, a static water tank is set up, simulating an oil and gas pipeline being placed inside, thus forming an experimental platform simulating a pipeline located on the seabed. Specifically, the pipeline is placed at the bottom of the water tank, and defects are pre-fabricated on the pipeline through mechanical processing. Then, the pipeline leakage condition is simulated in the static water tank, and the leaking gas is detected to determine the location and amount of the leak.

[0004] However, static water tanks cannot simulate ocean conditions, affecting the accuracy of the experimental platform's test results. Summary of the Invention

[0005] This application provides a pipeline damage simulation testing device for deep-sea underwater production systems, which can solve the problem that static water tanks in the prior art cannot simulate marine conditions, thus affecting the accuracy of the test results of the experimental platform.

[0006] This application provides a pipeline damage simulation testing device for deep-sea submersible production systems, comprising:

[0007] Box;

[0008] Water delivery mechanism, connected to the tank, is used to deliver liquid to the tank;

[0009] The first simulation mechanism includes a first pipeline and a leakage control component. Part of the first pipeline is installed inside the housing, and the leakage control component is installed on the housing. The leakage control component is connected to the first pipeline to control the gas leakage flow rate of the first pipeline.

[0010] The second simulation mechanism includes a second pipeline and a driving component. The inlet and outlet of the second pipeline are connected to the opposite sides of the tank, respectively. The driving component is installed on the second pipeline to drive the liquid in the tank to circulate within the tank and the second pipeline.

[0011] The third simulation mechanism includes a third pipeline and a detection device. Part of the third pipeline is installed inside the chamber, and the detection device is used to detect damage information of the third pipeline and temperature information of the liquid.

[0012] The gas delivery mechanism is connected to the first pipeline and the third pipeline respectively to deliver gas into the first pipeline and the third pipeline.

[0013] In the above-mentioned pipeline damage simulation test device for deep-sea underwater production systems, the first simulation mechanism may optionally include a connecting pipe and a leaking pipe. The first pipeline is provided with a leaking hole. One end of the connecting pipe is connected to the leaking hole, and the other end of the connecting pipe is connected to the leak control component. One end of the leaking pipe is connected to the leak control component, and one end of the leaking pipe is located inside the box.

[0014] The leakage control component is configured to control the gas flow rate from the first conduit to the leakage pipe.

[0015] In the aforementioned pipeline damage simulation test device for deep-sea underwater production systems, optionally, multiple air outlets with different diameters are provided at the other end of the connecting pipe. The first simulation mechanism also includes multiple connecting hoses with different diameters and multiple leakage control components, with one end of the connecting hose corresponding to the air outlet and the other end of the connecting hose corresponding to the leakage control component.

[0016] In the aforementioned pipeline damage simulation test device for deep-sea underwater production systems, the leakage control component optionally includes a solenoid valve, a gas flow meter, and a needle valve assembly connected together. The other end of the connecting pipe is connected to the solenoid valve, and one end of the leakage pipe is connected to the needle valve assembly. The solenoid valve is used to control the opening and closing of the leaking gas from the first pipeline to the leakage pipe. The needle valve assembly is used to control the flow rate of the leaking gas in the leakage pipe, and the gas flow meter is used to detect the flow rate of the leaking gas.

[0017] In the above-mentioned pipeline damage simulation test device for deep-sea underwater production systems, the first pipeline may include a first pipe section and a second pipe section. The first pipe section is disposed inside the box along the width direction of the box, and the second pipe section is disposed on the box. One end of the second pipe section is located on one side of the box in the width direction and is connected to one end of the first pipe section. The other end of the second pipe section is located on the other side of the box in the width direction and is connected to the other end of the first pipe section. A leakage hole is disposed on the first pipe section.

[0018] The gas transmission mechanism is connected to the second pipe section. The first simulation mechanism also includes a first pump body, which is installed on the second pipe section. The first pump body is used to control the flow of gas in the first and second pipe sections. A heat exchanger and a temperature detection device are installed on the first pipe. The temperature detection device detects the temperature of the first pipe, and the heat exchanger is used to control the temperature of the gas medium in the first pipe.

[0019] Optionally, in the above-mentioned pipeline damage simulation test device for deep-sea underwater production systems, the second simulation mechanism further includes two flow-generating irregular cylinders. Each of the two flow-generating irregular cylinders is provided with a flow channel for liquid flow. One end of the second pipeline is connected to the box through one of the flow-generating irregular cylinders, and the other end of the second pipeline is connected to the box through the other flow-generating irregular cylinder. The cross-sectional dimensions of the flow-generating irregular cylinders uniformly impact the second pipeline in the direction from the end of the second pipeline toward the box.

[0020] In the above-mentioned pipeline damage simulation test device for deep-sea underwater production systems, the third pipeline may optionally include a third pipe section and a fourth pipe section. The third pipe section is installed inside the box along the width direction of the box, and the fourth pipe section is installed on the box. One end of the fourth pipe section is located on one side of the box in the width direction and is connected to one end of the third pipe section. The other end of the fourth pipe section is located on the other side of the box in the width direction and is connected to the other end of the third pipe section. The test piece is installed on the third pipe section.

[0021] The gas transmission mechanism is connected to the fourth pipe section. The third simulation mechanism also includes a second pump body, which is installed on the fourth pipe section. The second pump body is used to control the flow of fluid medium in the third and fourth pipe sections.

[0022] In the aforementioned pipeline damage simulation test device for deep-sea underwater production systems, the gas transmission mechanism may optionally include a gas storage tank, a gas transmission pipeline, and a gas compressor. The gas storage tank is located on one side of the housing, and the gas compressor is connected to the gas storage tank through the gas transmission pipeline. A communication mechanism is provided between the gas storage tank and the first and third pipelines to enable the gas storage tank to be connected to the first and third pipelines.

[0023] In the above-mentioned pipeline damage simulation test device for deep-sea underwater production systems, the connecting mechanism may optionally include a tee fitting, a first vent pipe and a second vent pipe. The tee fitting has an air inlet, a first air outlet and a second air outlet. The air outlet of the air storage tank is connected to the air inlet of the tee fitting. The first air outlet is connected to the first pipeline through the first vent pipe, and the second air outlet is connected to the third pipeline through the second vent pipe.

[0024] The first vent pipe is equipped with a first pressure regulating valve for adjusting the gas pressure.

[0025] The second vent pipe is equipped with a second pressure regulating valve for adjusting gas pressure.

[0026] Optionally, the above-mentioned pipeline damage simulation test device for deep-sea underwater production systems may also include a control console and a frame. Both the housing and the control console are mounted on the frame, and the control console is connected to the leakage control components, the drive components, the water supply mechanism, and the gas supply mechanism, respectively.

[0027] This application provides a pipeline damage simulation testing device for deep-sea underwater production systems. The enclosure provides a unified installation and working space for each simulation mechanism, ensuring stable liquid storage and preventing liquid spillage, thus providing a basic environmental support for underwater pipeline operation simulation. The water delivery mechanism can flexibly control the injection volume and liquid level within the enclosure, improving the device's adaptability to different operating conditions. The first pipeline, acting as a gas leakage carrier, combined with the liquid environment within the enclosure, can simulate gas leakage scenarios in underwater pipelines, closely resembling actual engineering conditions. The leakage control components can precisely adjust the leakage equivalent, enabling the simulation of different leakage conditions and providing diverse test conditions for verifying leakage detection technologies and leakage mitigation solutions.

[0028] Furthermore, the second pipeline forms a circulation channel with the housing, and combined with the power output of the drive unit, it can simulate the flow state of fluids around the pipeline (such as river or seawater flow) and the impact effect on the second pipeline. The third pipeline, as a damage detection carrier, can simulate the damage state of the pipeline under gas transportation conditions. The detection device collects damage information in real time, which can directly verify the sensitivity and accuracy of damage detection technology, and provide experimental data support for pipeline damage early warning and maintenance scheme optimization.

[0029] It should be noted that through the linkage of various institutions, it is possible to simultaneously simulate marine current generation environment, liquid circulation, gas circulation, gas-liquid mixed medium circulation, gas leakage, pipeline damage, and composite working conditions under different temperatures and pressures. This covers a variety of key working conditions in actual pipeline operation, solves the problem of the single function of traditional simulation devices, improves the comprehensiveness of test data, and reduces the cost and risk of pipeline engineering testing. Attached Figure Description

[0030] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0031] Figure 1 A schematic diagram of a scenario for the pipeline damage simulation test device for deep-water underwater production systems provided in this application;

[0032] Figure 2 A partially enlarged view of the pipeline damage simulation test device for deep-water subsea production systems provided in this application;

[0033] Figure 3 A schematic diagram of the structure of the tee fitting for the pipeline damage simulation test device for deep-water underwater production systems provided in this application;

[0034] Figure 4 This is a schematic diagram of the gas delivery mechanism of the pipeline damage simulation test device for deep-sea underwater production systems provided in this application.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100. Box body;

[0037] 200. First simulation mechanism; 210. First pipeline; 211. First pipe section; 212. Second pipe section; 220. Leakage control assembly; 221. Solenoid valve; 222. Gas flow meter; 223. Needle valve assembly; 230. Connecting pipe; 231. Gas outlet; 240. First pump body;

[0038] 300. Second simulation mechanism; 310. Second pipeline; 320. Drive component; 330. Flow-generating irregular cylinder;

[0039] 400. Third simulation mechanism; 410. Third pipeline; 411. Third pipeline section; 412. Fourth pipeline section; 420. Second pump body;

[0040] 500. Gas transmission mechanism; 510. Gas storage tank; 520. Gas compressor; 530. Connecting mechanism; 531. Three-way valve; 532. First pressure regulating valve; 533. Second pressure regulating valve;

[0041] 610. Console; 620. Frame.

[0042] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0043] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0044] A simulated oil and gas pipeline is placed inside a static water tank, thus creating an experimental platform that simulates a pipeline located on the seabed. Specifically, the pipeline is placed at the bottom of the tank, and defects are pre-fabricated on the pipeline through machining. This simulates a pipeline leak in the static water tank, and the leaking gas is detected to determine the location and amount of the leak. However, the static water tank cannot simulate marine conditions, affecting the accuracy of the experimental platform's detection results.

[0045] In view of this, this application provides a pipeline damage simulation testing device for deep-sea underwater production systems. The enclosure provides a unified installation and working space for each simulation mechanism, ensuring stable liquid storage and preventing liquid spillage, thus providing basic environmental support for underwater pipeline operation simulation. The water delivery mechanism can flexibly control the injection volume and liquid level in the enclosure, improving the device's adaptability to different operating conditions. The first pipeline, acting as a gas leakage carrier, combined with the liquid environment within the enclosure, can simulate gas leakage scenarios in underwater pipelines, closely resembling actual engineering conditions. The leakage control components can precisely adjust the leakage equivalent, enabling the simulation of different leakage conditions and providing diverse test conditions for the verification of leakage detection technologies and leakage mitigation solutions.

[0046] The following description, in conjunction with the accompanying drawings, describes the pipeline damage simulation test device for deep-sea underwater production systems provided in this application.

[0047] Reference Figure 1 and Figure 4 This application provides a pipeline damage simulation test device for deep-water underwater production systems. The pipeline damage simulation test device for deep-water underwater production systems includes a housing 100, a water conveying mechanism, a first simulation mechanism 200, a second simulation mechanism 300, a third simulation mechanism 400, and a gas conveying mechanism 500.

[0048] The water delivery mechanism is connected to the housing 100 and is used to deliver liquid into the housing 100. The housing 100 is the basic supporting component of the device and provides liquid storage space. One end of the water delivery mechanism is connected to an external liquid source, and the other end is connected to the housing 100. The water delivery mechanism delivers liquid into the housing 100 to fill and replenish the liquid inside the housing 100, providing a basic environment for the second simulation mechanism 300.

[0049] The first simulation mechanism 200 includes a first pipeline 210 and a leakage control component 220. A portion of the first pipeline 210 is housed within a housing 100, and the leakage control component 220 is mounted on the housing 100. The leakage control component 220 is connected to the first pipeline 210 to control the gas leakage flow rate of the first pipeline 210. The first pipeline 210 is partially located inside the housing for contact with liquids and partially located outside the housing 100 for transporting gas. The first pipeline 210 can receive gas supplied by the gas delivery mechanism 500, serving as a carrier for gas leakage. The leakage control component 220 can adjust the gas leakage flow rate of the first pipeline 210 to simulate different levels of pipeline gas leakage conditions. The gas medium within the first pipeline 210 circulates under the action of an external driving force, and the temperature of the gas medium within the first pipeline 210 is controlled to better simulate the simulated operating conditions of the first pipeline 210 in a marine environment.

[0050] The second simulation mechanism 300 includes a second pipe 310 and a drive unit 320. The inlet and outlet of the second pipe 310 are respectively connected to the opposite sides of the tank 100. The drive unit 320 is disposed on the second pipe 310 to drive the liquid in the tank 100 to circulate within the tank 100 and the second pipe 310. The drive unit 320 provides power to drive the liquid in the tank 100 to circulate along the path from the tank 100 to the second pipe 310 and back to the tank 100, thereby simulating the conditions of seawater flow in the ocean and the impact of seawater flow on the second pipe 310.

[0051] The third simulation mechanism 400 includes a third pipeline 410 and a detection element. Part of the third pipeline 410 is housed within the enclosure 100. The detection element is used to detect damage information in the third pipeline 410. The third pipeline 410 can receive gas delivered by the gas delivery mechanism 500, serving as a carrier for simulating pipeline damage. Real-time detection of damage information in the third pipeline 410 (such as damage location, damage extent, and gas / liquid leakage) provides data support for pipeline damage assessment.

[0052] Understandably, by artificially creating damage conditions using the third pipeline 410, placing the third pipeline 410 in the box 100, and using the flow of water, the third pipeline 410 is tested for leakage or damage under the impact of the water flow. The test device detects the damage to the third pipeline 410, thereby simulating the operation of the third pipeline 410 with different damage in the ocean under marine conditions, and using the test device for detection.

[0053] The gas delivery mechanism 500 is connected to the first pipeline 210 and the third pipeline 410 respectively to deliver gas into the first pipeline 210 and the third pipeline 410. The gas delivery mechanism 500 can deliver gas into the first pipeline 210 and the third pipeline 410, perform the action of delivering gas into the first pipeline 210 and the third pipeline 410, and control the pressure, flow rate, start and stop of gas delivery.

[0054] Specifically, the water supply mechanism is activated to deliver liquid into the tank 100 until the liquid reaches a preset level, covering the first pipe 210 and the third pipe 410 sections within the tank, providing an environment for simulating underwater pipeline conditions. Then, the drive unit 320 of the second simulation mechanism 300 is activated. Under the power of the drive unit, the liquid in the tank 100 flows into the second pipe 310 through the inlet and then flows back to the tank 100 through the outlet, forming a liquid circulation that simulates the water flow environment in actual pipeline conditions.

[0055] Furthermore, the gas delivery mechanism 500 is activated to deliver gas at a preset pressure and flow rate into the first pipeline 210 and the third pipeline 410. Simultaneously, the leakage control component 220 of the first simulation mechanism 200 is adjusted to control the gas leakage flow rate in the first pipeline 210, simulating different levels of gas leakage conditions, such as minor, moderate, and severe leaks. This facilitates the determination of the leakage location and condition in the first pipeline 210 based on these different leakage conditions. During gas delivery, the detection element of the third simulation mechanism 400 is activated. Since the third pipeline 410 contains a liquid medium, the detection element performs real-time monitoring of the third pipeline 410, collecting and analyzing damage information (such as damage location, damage type, and damage degree) under the impact of water flow. This simulates and detects pipeline damage conditions and provides real-time monitoring of the location and amount of liquid medium leakage after damage to the third pipeline 410.

[0056] The pipeline damage simulation test device for deep-sea underwater production systems provided in this application embodiment provides a unified installation and working space for each simulation mechanism in the housing 100, ensuring stable liquid storage and preventing liquid spillage, thus providing basic environmental support for underwater pipeline operation simulation. The water delivery mechanism can flexibly control the injection volume and liquid level in the housing 100, improving the device's adaptability to operating conditions. The first pipeline 210, as a gas leakage carrier, combined with the liquid environment inside the housing 100, can simulate gas leakage scenarios in underwater pipelines, closely resembling actual engineering conditions. The leakage control component 220 can precisely adjust the leakage flow rate to simulate different leakage levels, providing diverse test conditions for verifying leakage detection technologies and leakage mitigation solutions.

[0057] Furthermore, the second pipeline 310 forms a circulation channel with the housing 100. Combined with the power output of the drive component 320, it can simulate the flow state of fluids around the pipeline (such as river or seawater flow) and the impact effect on the second pipeline. The third pipeline 410 serves as a damage detection carrier, simulating the damage state of the pipeline under gas transportation conditions. The detection component collects damage information in real time, which can directly verify the sensitivity and accuracy of the damage detection technology, providing experimental data support for pipeline damage early warning and maintenance scheme optimization.

[0058] It should be noted that through the linkage of various institutions, it is possible to simultaneously simulate marine current generation environment, liquid circulation, gas circulation, gas-liquid mixed medium circulation, gas leakage, pipeline damage, and composite working conditions under different temperatures and pressures. This covers a variety of key working conditions in actual pipeline operation, solves the problem of the single function of traditional simulation devices, improves the comprehensiveness of test data, and reduces the cost and risk of pipeline engineering testing.

[0059] Reference Figure 1 and Figure 2In some embodiments, the first simulation mechanism 200 further includes a connecting pipe 230 and a leak pipe. The first pipe 210 is provided with a leak hole. One end of the connecting pipe 230 is connected to the leak hole, and the other end of the connecting pipe 230 is connected to a leak control component 220. One end of the leak pipe is connected to the leak control component 220, and one end of the leak pipe is located inside the housing 100. The leak control component 220 is configured to control the gas flow rate from the first pipe 210 to the leak pipe.

[0060] Understandably, in addition to the original gas delivery function, the process adds the action of allowing gas in the first pipeline 210 to flow out through a channel to the connecting pipe 230, providing an initial outlet path for gas leaks. The two ends of the connecting pipe 230 are connected to the leak hole of the first pipeline 210 and the leak control component 220, respectively, ensuring that the leaked gas flows to the leak control component 220 along a preset path. The leak pipe enables the terminal discharge function of the leaked gas, allowing the regulated leaked gas to directly contact the liquid inside the housing 100, simulating a real underwater pipeline leak scenario.

[0061] Specifically, the gas delivery mechanism 500 delivers gas at a preset pressure and flow rate into the first pipeline 210. The gas flows stably within the first pipeline 210, providing a gas source for subsequent leak simulations. The gas in the first pipeline 210 flows out through a leak hole in the pipe wall and enters the connecting pipe 230. At this time, the connecting pipe 230 acts as an intermediate channel, directing the gas exiting from the leak hole to the leak control component 220, preventing the gas from directly diffusing into the liquid inside the housing 100, and ensuring that the leak path is controllable. The leak control component 220 adjusts its internal control components (such as the opening of the throttle valve, the position of the valve core, etc.) according to the simulation requirements (such as simulating micro-leakage, moderate leakage, or severe leakage) to precisely control the gas flow rate flowing into the connecting pipe 230, and selects the leakage amount that meets the test conditions.

[0062] Furthermore, the gas, after being regulated by the leakage control component 220, flows into the housing 100 through the leakage pipe connected to it. Since the other end of the leakage pipe is located inside the housing 100 (and the housing 100 has been filled with liquid by the water supply mechanism), the gas is discharged from the end of the leakage pipe into the liquid, forming bubbles, dissolving or diffusing, etc., completely simulating the real physical process of gas leakage in underwater pipelines.

[0063] With the above settings, the initial location of the leak can be precisely controlled, improving the controllability of the leak location. The regulated leaked gas is directly discharged into the liquid within the chamber 100, rather than directly into the air, completely replicating the real-world condition of gas leaking into the liquid environment from an underwater pipeline, thus improving the realism of the simulation results. A complete leak simulation chain is constructed, including the gas delivery mechanism, the first pipeline, the leak hole, the connecting pipe, the control components, the leak pipe, and the liquid environment (chamber), achieving full-process controllability from gas supply to the actual leak phenomenon, solving the problems of ambiguous leak paths and low flow control accuracy in traditional simulation devices.

[0064] Furthermore, by adjusting the combination of leak holes (diameter and location), connecting pipes 230, leak pipes (end type and depth), and control components (flow parameters), diverse pipeline leakage conditions with different leak locations, different leak types (such as direct leakage on the pipeline), different leakage amounts, and different underwater depths can be simulated. This provides more comprehensive and realistic test conditions for the verification of leak detection technology and leak control solutions, and enhances the reference value of test data.

[0065] Reference Figure 1 and Figure 2 In some embodiments, the other end of the connecting pipe 230 is provided with multiple air outlets 231, the multiple air outlets 231 having different diameters. The first simulation mechanism 200 also includes multiple connecting hoses with different diameters and multiple leakage control components 220. One end of the connecting hose is provided corresponding to the air outlet 231, and the other end of the connecting hose is provided corresponding to the leakage control component 220.

[0066] Understandably, by diverting gas to corresponding connecting hoses through outlets 231 of different diameters, gas diversion and initial flow rate grading are achieved. Due to the different outlet diameters, the initial gas flow rates output from different outlets 231 differ under the same inlet pressure, providing a basic flow gradient for subsequent precise control. Multiple leakage control components 220 independently regulate the gas flow rate delivered by their respective connecting hoses, achieving independent multi-path gas flow rate control. Each leakage control component 220 can have its control parameters set independently according to experimental requirements, without interference, while simultaneously covering control needs across different flow ranges.

[0067] Specifically, the gas delivery mechanism 500 delivers gas at a preset pressure to the first pipeline 210, and the gas flows into the connecting pipe 230 through the leakage hole of the first pipeline 210. The gas entering the connecting pipe 230 flows along the pipe body to the other end, and is diverted through multiple outlets 231 with different diameters. Due to the difference in outlet diameters, under the same inlet pressure, the initial gas flow rate of the outlet with a larger diameter is greater, and the initial flow rate of the outlet with a smaller diameter is smaller, forming a multi-gradient initial flow rate. The gas flowing out of each outlet 231 is delivered through a corresponding connecting hose with a matching diameter. The flexible structure of the connecting hose can flexibly bypass other components inside the housing 100 (such as the second pipeline 310 and the third pipeline 410), ensuring that the gas is stably conducted to the corresponding leakage control component 220. At the same time, the connecting hoses of different diameters can fine-tune the initial flow rate through their own flow resistance (such as the smaller diameter hose further reducing the fluctuation of small flow gas), improving the flow stability before entering the leakage control component 220.

[0068] Each leakage control component 220, after receiving the gas delivered by its corresponding connecting hose, independently adjusts its own control components according to the experimental conditions (such as simultaneously simulating "micro-leakage, moderate leakage, and severe leakage"). For gas with a low initial flow rate, the small-range control component can precisely adjust to the micro-leakage flow rate. For gas with a high initial flow rate, the large-range control component can adjust to the moderate or severe leakage flow rate, achieving synchronous and independent control of multiple leakage flow rates. The gas at different flow rates after being controlled by each leakage control component 220 is discharged into the liquid inside the chamber 100 through its corresponding leakage pipe, simultaneously simulating various leakage scenarios with different flow rates and locations (or different depths), forming a more realistic complex operating condition where multiple leakage points coexist in actual engineering.

[0069] By using the above settings, different initial flow rates of gas can be split within the same connecting pipe 230 through the difference in the diameter of the outlet 231, simplifying the device structure and reducing the hardware cost of multi-condition simulation. Matching connecting hoses of different diameters with the corresponding outlet 231 diameters can reduce pressure fluctuations during gas transmission through flow resistance matching, improving the stability of the gas flow entering the leakage control component 220 and ensuring precise control.

[0070] Furthermore, it enables simultaneous simulation of multiple leakage conditions. Overcoming the limitation of existing single control components that can only simulate one type of leakage flow, multiple leakage control components 220 can be independently controlled to simultaneously simulate various conditions such as micro-leakage, moderate leakage, and severe leakage. It can even simulate flow rate changes at different times from the same leak point (by dynamically adjusting the parameters of different components), more closely resembling the complex scenarios of "multiple leak points coexisting" or "dynamically changing leakage" in actual pipelines. It also improves flow rate control accuracy. Each leakage control component 220 can adapt its range according to the initial flow range of the corresponding gas path, avoiding the problem of insufficient accuracy for small flow rates due to an excessively large range of a single component, or the inability to control large flow rates due to an excessively small range, thus achieving high-precision control across the entire flow range.

[0071] It should be noted that in some embodiments, the diameter of the air outlet of the connecting pipe 230 and the diameter of the corresponding connecting hose are set to 2mm, 4mm and 6mm. By connecting the leakage control component 220 through connecting hoses of different diameters, it is possible to simultaneously simulate multiple leakage scenarios with different flow rates and different locations (or different depths), forming a more realistic complex working condition where multiple leakage points coexist in actual engineering.

[0072] Subsequently, the gas flowing through the leakage control component 220 passes through the exhaust hose, the exhaust port of which is located at the bottom of the housing, causing the gas in the first pipeline to leak from the leak hole and enter the connecting pipe 230. From the different outlets 231 of the connecting pipe 230, the gas enters the leakage control component 220, and from the leakage control component 220, it enters the exhaust hose and is discharged into the housing through the exhaust port of the exhaust hose. Thus, by using the position of the exhaust hose and the equivalent amount of leaked gas, the leakage condition of the oil and gas pipeline is simulated.

[0073] Reference Figure 2 In some embodiments, the leakage control component 220 includes a solenoid valve 221, a gas flow meter 222, and a needle valve assembly 223 connected together. The other end of the connecting pipe 230 is connected to the solenoid valve 221, and one end of the leakage pipe is connected to the needle valve assembly 223. The solenoid valve 221 is used to control the opening and closing of the leaked gas from the first pipeline 210 to the leakage pipe. The needle valve assembly 223 is used to control the flow rate of the leaked gas in the leakage pipe. The gas flow meter 222 is used to detect the flow rate of the leaked gas.

[0074] Understandably, after receiving an electrical signal, the solenoid valve 221 quickly switches between on and off states. When on, it allows gas to flow from the connecting pipe 230 to subsequent components; when off, it cuts off the gas path, achieving precise control of gas flow on / off. This fast response meets the on / off requirements of dynamic leakage scenarios. The gas flow meter 222 senses the gas flow state, converting the flow signal into readable data. It supports monitoring and recording real-time leakage and cumulative leakage, enabling real-time flow monitoring and feedback. This provides data for the flow regulation of the needle valve assembly 223, forming a closed-loop control. The needle valve assembly 223 changes the valve core opening by rotating the valve stem, adjusting the gas flow cross-sectional area and thus changing the gas velocity and flow rate. This achieves continuous and fine flow regulation, precisely controlling the flow to a preset value based on the real-time flow data fed back by the gas flow meter 222, ensuring the stability of the leakage flow.

[0075] Specifically, the gas delivery mechanism 500 delivers gas at a preset pressure to the first pipeline 210. The gas flows through the leak hole, connecting pipe 230, and connecting hose to the leak control component 220. At this time, the solenoid valve 221 receives a conduction signal, the valve core opens, the gas path is opened, and the gas initially flows through the solenoid valve 221 and enters the gas flow meter 222. The gas flow meter 222 detects the initial gas flow rate in real time and feeds the data back to the control system. The control system judges the difference between the initial flow rate and the target value based on the preset leak flow rate target value. If the initial flow rate is too large or too small, it sends an adjustment command to the needle valve assembly 223 to fine-tune the valve core opening, change the gas path flow cross-sectional area, and gradually bring the flow rate closer to the target value.

[0076] In this process, as the needle valve assembly 223 is adjusted, the gas flow meter 222 continuously feeds back real-time flow data. The control system continuously fine-tunes the needle valve assembly 223 based on the data deviation until the flow rate stabilizes at the preset target value. During this process, if it is necessary to pause the leakage simulation, the solenoid valve 221 can receive a shut-off signal to quickly cut off the gas path and stop the gas flow to the leak pipe. For the multiple leakage control components 220 of the first simulation mechanism 200, the solenoid valves 221 of different components can control the opening and closing of the corresponding gas paths, the gas flow meters 222 detect the flow rate of each path, and the needle valve assembly 223 adjusts the flow rate of each path to different target values. Finally, the gas adjusted by each component is discharged into the liquid inside the chamber 100 through the corresponding leak pipe, simultaneously simulating multiple leakage conditions.

[0077] With the above configuration, coupled with the leakage control component 220 equipped with closed-loop control capability, the first simulation mechanism 200 can not only achieve synchronous leakage along multiple paths, but also ensure accurate and stable leakage flow rate for each path, solving the problem of low flow rate accuracy in traditional multi-condition simulation. Furthermore, it can simulate more complex dynamic leakage conditions (such as leakage flow rate gradually increasing from micro-leakage to severe leakage, or intermittent leakage). Through the dynamic on / off switching of the solenoid valve 221 and the real-time adjustment of the needle valve assembly 223, it reproduces the dynamic changes in actual pipeline leakage, providing more realistic test conditions for testing the dynamic response capability of leakage detection equipment, further enhancing the engineering application value of the device.

[0078] Reference Figure 1 and Figure 2 In some embodiments, the first pipe 210 includes a first pipe segment 211 and a second pipe segment 212. The first pipe segment 211 is disposed inside the housing 100 along the width direction of the housing 100, and the second pipe segment 212 is disposed on the housing 100. One end of the second pipe segment 212 is located on one side of the housing 100 in the width direction and communicates with one end of the first pipe segment 211. The other end of the second pipe segment 212 is located on the other side of the housing 100 in the width direction and communicates with the other end of the first pipe segment 211. A leakage hole is disposed on the first pipe segment 211. The gas delivery mechanism 500 is connected to the second pipe section 212. The first simulation mechanism 200 also includes a first pump body 240, which is installed on the second pipe section 212. The first pump body 240 is used to control the flow of gas in the first pipe section 211 and the second pipe section 212. A heat exchanger and a temperature detection device are installed on the first pipe 210. The temperature detection device detects the temperature of the first pipe 210, and the heat exchanger is used to control the temperature of the gas medium in the first pipe 210.

[0079] Specifically, the gas delivery mechanism 500 is activated, supplying gas at a preset pressure and flow rate to the second pipe section 212. The gas flows into the second pipe section 212, initially filling it. Simultaneously, the first pump 240 is activated, using power output to push the gas in the second pipe section 212 towards one end of the first pipe section 211, allowing the gas to gradually enter the first pipe section 211, completing the gas filling and initial pressure establishment of the closed-loop structure of the first pipe 210. The first pump 240 continues to operate, adjusting its output power according to simulation requirements to control the gas to form a stable circulation within the first pipe section 211 and the second pipe section 212. The gas flows from one end of the first pipe section 211 to the other (along the width of the housing). Gas that does not leak through the leak hole flows from the other end of the first pipe section 211 into the other end of the second pipe section 212, and is then pushed back to the first pipe section 211 by the first pump 240, forming a closed-loop flow from the second pipe section 212 to the first pipe section 211 and back to the second pipe section 212. During this process, the gas pressure in the first pipe section 211 is maintained at a preset value, providing a stable pressure basis for the gas to be discharged from the leakage hole.

[0080] It should be noted that the detection device can also obtain a signal to determine whether the gas is flowing between the first pipe section 211 and the second pipe section 212 during gas leak detection, thereby determining the flow of gas between the first pipe section 211 and the second pipe section 212.

[0081] Furthermore, the gas in the first pipe section 211 flows out through the leak hole on the pipe body and enters the connecting pipe 230. The connecting pipe 230 diverts the gas to multiple gas outlets 231, which are then delivered to each leakage control component 220 via corresponding connecting hoses. The solenoid valve 221 receives a signal to open the gas path, the gas flow meter 222 detects the real-time flow and provides feedback, and the needle valve assembly 223 finely adjusts the flow based on the feedback data. Finally, the regulated gas is discharged into the liquid inside the housing 100 through the leak pipe, realizing the leakage simulation. At the same time, the first pump body 240 continuously maintains the gas circulation in the first pipe section 210 to compensate for the pressure loss caused by the leakage and ensure a stable leakage flow. If it is necessary to adjust the leakage simulation parameters (such as increasing the leakage flow), the output power of the first pump body 240 can be increased to increase the gas velocity and pressure in the first pipe section 211, thereby increasing the initial gas flow rate discharged from the leak hole, and then fine-tuning can be performed in conjunction with the leakage control component 220. When the simulation ends, the gas supply mechanism 500 stops supplying gas, the first pump body 240 stops working, and the solenoid valve 221 closes the gas path, completing the entire process.

[0082] With the above setup, the first pipe section 211 is arranged inside the box along the width of the box 100. Multiple leakage holes can be set in the transverse area of ​​the box 100 to simulate the condition of multiple leakage points in the transverse pipeline, solving the problem of the limited simulation scenario of local leakage in traditional single pipe sections. The first pipe section 211 is located in the liquid inside the box 100, so that the gas discharged from the leakage holes directly contacts the liquid, realizing a realistic underwater pipeline leakage environment and avoiding simulation distortion caused by the pipe section's position deviating from the liquid, thus improving the realism of the test. The stable control of gas flow parameters by the first pump body 240, combined with the real-time feedback of the gas flow meter 222, can ensure that the deviation of leakage flow rate is small under the same test conditions, significantly improving the accuracy of test data and providing more accurate test basis for leakage detection technology verification and pipeline safety assessment.

[0083] Reference Figure 1 In some embodiments, the second simulation mechanism 300 further includes two flow-generating irregular cylinders 330, each of which is provided with a flow channel for liquid flow. One end of the second pipe 310 is connected to the box 100 through one of the flow-generating irregular cylinders 330, and the other end of the second pipe 310 is connected to the box 100 through the other flow-generating irregular cylinder 330. The cross-sectional dimensions of the flow-generating irregular cylinder 330 are uniformly impacted in the direction from the end of the second pipe 310 toward the box 100.

[0084] Specifically, the drive unit 320 of the second simulation mechanism 300 is activated, and the drive unit 320 outputs power to act on the liquid in the second pipe 310, forming a directional flow trend. At this time, under the action of suction and pressure difference of the drive unit 320, the liquid in the box 100 flows to the flow channel of one of the flow-generating irregular cylinders 330. The cross-sectional size of one of the flow-generating irregular cylinders 330 gradually increases from the end of the second pipe 310 to the box 100. After the liquid enters the flow channel from the large cross-section end (box 100 side), the flow space gradually contracts, the flow velocity increases slowly, and the guiding effect of the flow channel prevents the liquid from generating vortices. Finally, it enters one end of the second pipe 310 in a stable flow state, completing the transition and introduction of the liquid from the box to the second pipe 310.

[0085] Afterwards, the liquid flows to the other end of the second pipe 310 and enters the flow channel of another flow-generating irregular cylinder 330. This other flow-generating irregular cylinder 330 has the same structure as the first one, with its cross-sectional dimensions gradually increasing from the end of the second pipe 310 to the tank 100. After the liquid enters the flow channel from the small cross-section end of the second pipe 310, the flow space gradually expands, the flow velocity gradually decreases, and residual minor disturbances are further eliminated. Finally, it is guided back to the tank 100 from the large cross-section end with a stable flow state close to the liquid velocity inside the tank 100, completing the transition and return flow of the liquid from the second pipe 310 to the tank 100, thus simulating real water flow conditions. Furthermore, the flow rate is adjusted by the drive component 320, and the inlet flow of the water in the pool is controlled by the flow-generating irregular cylinder 330 to flush the third pipe 410, creating an impact effect and underwater noise effect on the third pipe 410.

[0086] With the above settings, the liquid inside the chamber 100 maintains a stable flow, preventing turbulence from disrupting the diffusion trajectory of bubbles exiting the leak hole in the first pipe section 211, ensuring accurate leakage flow detection, and preventing turbulence from impacting the third pipe 410 and affecting damage detection accuracy. The flow-generating shaped cylinder 330 transports the liquid from the chamber 100 to the second pipe 310, allowing the liquid to circulate within both the chamber 100 and the second pipe 310. This creates a water flow condition within the chamber 100, simulating the impact of gas leakage in the first pipe 210 and the damage to the third pipe 410 under simulated water flow conditions, ensuring the accuracy of the detection results.

[0087] Reference Figure 1In some embodiments, the third pipeline 410 includes a third pipe section 411 and a fourth pipe section 412. The third pipe section 411 is disposed within the housing 100 along the width direction of the housing 100, and the fourth pipe section 412 is disposed on the housing 100. One end of the fourth pipe section 412 is located on one side of the housing 100 in the width direction and communicates with one end of the third pipe section 411. The other end of the fourth pipe section 412 is located on the other side of the housing 100 in the width direction and communicates with the other end of the third pipe section 411. A detection element is disposed on the third pipe section 411. The gas delivery mechanism 500 is connected to the fourth pipe section 412. The third simulation mechanism 400 also includes a second pump body 420, which is disposed on the fourth pipe section 412 and is used to control the flow of the fluid medium within the third pipe section 411 and the fourth pipe section 412.

[0088] Specifically, the gas delivery mechanism 500 is connected to the fourth pipe section 412, and the detection component is installed in the preset position of the third pipe section 411 and is ready for debugging. At this time, the second pump body 420 is in standby mode, the third pipe 410 is under normal pressure, and the housing 100 has been injected with liquid by the water delivery mechanism (covering the third pipe section 411 to simulate an underwater pipeline environment), laying the foundation for subsequent gas flow and damage detection. The gas delivery mechanism 500 is started, delivering gas with a preset pressure and purity to the fourth pipe section 412 according to the simulation requirements. At the same time, the second pump body 420 is started, and the output power of the second pump body 420 acts on the gas in the fourth pipe section 412, pushing the gas to flow along the path from the fourth pipe section 412 to the third pipe section 411 and back to the fourth pipe section 412, forming a closed gas circuit cycle.

[0089] It should be noted that the circulating medium in the third pipe section 411 and the fourth pipe section 412 can be a liquid, a gas, or a gas-liquid mixture. In this application, the medium flowing in the third pipe section 411 and the fourth pipe section 412 is a gas-liquid mixture, thereby simulating the actual working conditions of an oil and gas transmission pipeline.

[0090] Furthermore, when the gas flows stably within the third pipe section 411, the detection device begins real-time monitoring of damage information in the third pipe section 411. Different sizes of damage (such as drilling or grooving) are pre-set in the third pipe section 411. The second pump body 420 maintains stable gas parameters, and the detection device compares the detection data under different damage states to verify the sensitivity of the detection technology. The second pump body 420 adjusts the gas flow rate and pressure, and the detection device monitors the signal changes of the same damage under different flow conditions, providing extreme condition data support for pipeline operation and maintenance.

[0091] With the above setup, the third pipe section 411 is located in the liquid within the housing 100, replicating the operating environment of actual underwater pipelines (such as subsea gas-liquid pipelines and underwater oil-gas pipelines), and can also simulate the impact of water pressure on pipe damage. The fourth pipe section 412 is installed on the housing 100 to prevent liquid corrosion of the gas delivery mechanism and the second pump body 420, ensuring long-term stable operation of the equipment. Damage detection of the third simulation mechanism 400 needs to be coordinated with leakage simulation of the first simulation mechanism 200 and liquid flow simulation of the second simulation mechanism 300 (such as simulating a composite condition of "underwater pipeline with both leakage and damage"). The stable gas path maintained by the second pump body 420 ensures that damage detection of the third pipe section 411 is not affected by leaked gas (such as bubble interference) from the first simulation mechanism or liquid flow (such as flow velocity fluctuations) from the second simulation mechanism. At the same time, the width direction of the third pipe section 411 is arranged parallel to the first pipe section 211 to avoid mutual interference between pipes and achieve synchronous simulation of multiple operating conditions.

[0092] It should be noted that, in some embodiments, the detection element includes a microstructure sensing fiber optic cable, which is laid on the first conduit 210 and the third conduit 410. A distributed fiber optic DAS system is used to collect defect data on the leakage of the first conduit 210, and a Brillouin separation analysis system is used to collect data on the defects of the third conduit 410.

[0093] Reference Figure 1 and Figure 4 In some embodiments, the gas delivery mechanism 500 includes a gas storage tank 510, a gas delivery pipeline, and a gas compressor 520. The gas storage tank 510 is located on one side of the housing 100. The gas compressor 520 is connected to the gas storage tank 510 through the gas delivery pipeline. A communication mechanism 530 is provided between the gas storage tank 510 and the first pipeline 210 and the third pipeline 410 to enable the gas storage tank 510 to be connected to the first pipeline 210 and the third pipeline 410.

[0094] Specifically, the gas compressor 520 is started, and the target gas pressure is set according to the operating requirements of the first simulation mechanism 200 and the third simulation mechanism 400. The gas compressor 520 draws in air from the outside, compresses it to increase the gas pressure to the preset value, and then stably delivers it to the gas storage tank 510 through the gas pipeline. The gas storage tank 510 receives and temporarily stores the compressed gas, while its internal pressure sensor monitors the pressure inside the tank in real time. When the pressure reaches the preset value, a feedback signal is sent to the gas compressor 520, and the compressor switches to pressure-maintaining mode to prevent the gas storage tank from over-pressurizing or under-pressurizing.

[0095] Next, gas is supplied to the first pipeline 210. The valve connecting the connecting mechanism 530 to the first pipeline 210 is opened, and the compressed gas in the gas storage tank 510 enters the second pipeline section 212 through the valve. Simultaneously, the first pump 240 starts, pushing the gas to the first pipeline section 211, providing a stable gas source for the leak outlet. During this process, the connecting mechanism 530 can fine-tune the gas flow rate by adjusting the valve opening to match the power parameters of the first pump 240, avoiding sudden changes in gas flow rate. Gas is then supplied to the third pipeline 410. The valve connecting the connecting mechanism 530 to the third pipeline 410 is opened, and the compressed gas in the gas storage tank 510 enters the fourth pipeline section 412 through the valve. The second pump 420 starts, pushing the gas to circulate between the third pipeline section 411 and the fourth pipeline section 412. If the first and third pipelines require gas at different pressures, the connecting mechanism 530 can adjust the pressure of the two gas lines separately through the built-in pressure regulating valve to meet differentiated needs.

[0096] Through the above settings, the gas storage tank 510 can temporarily store compressed gas and maintain stable pressure. Combined with the pressure-holding and gas-replenishing functions of the gas compressor, this ensures minimal fluctuations in output gas pressure. Simultaneously, the valves and pressure regulating valves of the connecting mechanism 530 can precisely control flow rate and pressure, preventing sudden changes in flow rate during gas path switching. The gas delivery mechanism 500 serves as the common gas source for the first simulation mechanism 200 and the third simulation mechanism 400. Its stable gas supply and differentiated adjustment capabilities ensure that the two mechanisms can operate synchronously or independently, such as performing leakage simulation or damage detection separately, or simultaneously performing composite operating condition simulations.

[0097] It should be noted that in some embodiments, the gas storage tank 510 is connected to a pressure reducing valve via a gas delivery hose. The pressure reducing valve is located at the inlet of the gas storage tank 510, and a gas ball valve is installed at the outlet of the gas storage tank 510. A three-way connector 531 is connected via the gas delivery hose, and a gas filter is installed on the three-way connector 531 to filter the gas. Then, the gas is sent into the first pipeline 210 using a first pressure regulating valve 532. A first pressure gauge is installed on the first pipeline 210 to detect the gas pressure inside. The gas is then sent into the third pipeline 410 using a second pressure regulating valve 533. A second pressure gauge is installed on the third pipeline 410 to detect the gas pressure inside.

[0098] Reference Figure 1 and Figure 3In some embodiments, the connecting mechanism 530 includes a three-way connector 531, a first vent pipe, and a second vent pipe. The three-way connector 531 has an inlet, a first outlet, and a second outlet. The outlet 231 of the gas storage tank 510 is connected to the inlet of the three-way connector 531. The first outlet is connected to the first pipeline 210 via the first vent pipe, and the second outlet is connected to the third pipeline 410 via the second vent pipe. A first pressure regulating valve 532 for adjusting gas pressure is provided on the first vent pipe. A second pressure regulating valve 533 for adjusting gas pressure is provided on the second vent pipe.

[0099] Specifically, by connecting the gas storage tank 510 to the air inlet of the three-way fitting 531, gas can enter the three-way fitting 531 and be divided into two branches. The first outlet is connected to the first pipeline 210 through the first vent pipe, thereby allowing compressed gas to be introduced into the first pipeline 210. The second outlet is connected to the third pipeline 410 through the second vent pipe. Furthermore, under the action of the first pressure regulating valve 532 and the second pressure regulating valve 533, the gas pressure and gas flow rate in the first pipeline 210 and the third pipeline 410 are controlled, avoiding sudden changes in flow rate during gas path switching.

[0100] Reference Figure 1 In some embodiments, the system also includes a console 610 and a frame 620. Both the housing 100 and the console 610 are mounted on the frame 620. The console 610 is connected to the leakage control component 220, the drive component 320, the water supply mechanism, and the gas supply mechanism 500, respectively.

[0101] Through the above configuration, the frame 620 integrates all components via a pre-defined interface, fixing the relative positions of the housing and the control console 610. Simultaneously, installation space can be reserved on the side or bottom of the frame 620 for gas and water supply mechanisms, avoiding wasted space due to dispersed placement. The frame 620 provides a stable installation foundation for the control console 610 and all mechanisms, ensuring stable control signal transmission. The control console 610, through centralized control, fully utilizes the space advantages of the integrated frame, making the entire device a structurally stable, precisely controlled, and easily operable integrated test platform. Compared to traditional distributed devices, it can be widely used in scenarios such as pipeline leak detection, damage assessment, and maintenance scheme verification. Furthermore, the control console 610 can perform on / off, adjustment, and emergency stop controls, and can record various data during the experimental process.

[0102] It should be noted that the water supply mechanism includes a water supply hose and a drain hose. The water supply pipe enters the tank 100 from the top of the tank 100, and the drain hose can discharge the liquid in the tank 100. Thus, the liquid can be discharged into or out of the tank 100 through the water supply hose and the drain hose, and the discharge of liquid can be carried out simultaneously, thereby simulating water flow conditions and ensuring the accuracy of the simulation data.

[0103] Specifically, a first temperature sensor is installed on the first pipe 210, and a second temperature sensor is installed on the third pipe 410. Furthermore, heat exchange tubes are installed on both the first pipe 210 and the third pipe 410, and these heat exchange tubes are connected to a hot water tank. A circulation pump is installed inside the hot water tank. Through operation and control, the medium (oil or water) inside the hot water tank is heated. The medium then circulates through the pump within the tank 100, through the heat exchange tubes, and through the first and second temperature sensors. The real-time temperatures of the first pipe 210 and the third pipe 410 can be obtained, thereby adjusting the specific temperatures within the first pipe 210 and the third pipe 410.

[0104] It should be noted that in other embodiments, multiple leakage holes are provided on the gas transmission pipeline, and a leakage control release mechanism is provided at the location of each leakage hole. The opening and closing of the leakage holes are then controlled by the leakage control release mechanism. The leakage control release mechanism includes a drive rod and a sealing plate. The drive rod is connected to the sealing plate. External force controls the drive rod to move vertically, causing the sealing plate to move downwards until it is in contact with the pipeline, sealing the leakage hole and preventing gas leakage. When the drive rod moves upwards, the sealing plate moves upwards and separates from the pipeline, opening the leakage hole and allowing gas to leak from the pipeline. A detection element monitors the location and amount of the leak in real time.

[0105] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A device for simulating and testing pipeline damage conditions in deep-water subsea production systems, characterized in that, include: Box (100); A water delivery mechanism is connected to the housing (100) and is used to deliver liquid to the housing (100); The first simulation device (200) includes a first pipeline (210) and a leakage control component (220). A portion of the first pipeline (210) is disposed within the housing (100), and the leakage control component (220) is disposed on the housing (100). The leakage control component (220) is connected to the first pipeline (210) to control the gas leakage flow rate of the first pipeline (210). The second simulation mechanism (300) includes a second pipeline (310) and a drive unit (320). The inlet and outlet of the second pipeline (310) are respectively connected to the opposite sides of the tank (100). The drive unit (320) is disposed on the second pipeline (310) to drive the liquid in the tank (100) to circulate within the tank (100) and the second pipeline (310). The third simulation mechanism (400) includes a third pipeline (410) and a detection element. Part of the third pipeline (410) is disposed inside the housing (100). The detection element is used to detect damage information of the third pipeline (410) and temperature information of the liquid. A gas delivery mechanism (500) is connected to the first pipeline (210) and the third pipeline (410) respectively to deliver gas into the first pipeline (210) and the third pipeline (410).

2. The pipeline damage simulation and testing device for deep-water submersible production systems according to claim 1, characterized in that, The first simulation mechanism (200) further includes a connecting pipe (230) and a leakage pipe. The first pipeline (210) is provided with a leakage hole. One end of the connecting pipe (230) is connected to the leakage hole, and the other end of the connecting pipe (230) is connected to the leakage control component (220). One end of the leakage pipe is connected to the leakage control component (220), and one end of the leakage pipe is located inside the housing (100). The leakage control component (220) is configured to control the gas flow rate from the first conduit (210) to the leakage pipe.

3. The pipeline damage simulation test device for deep-water submersible production systems according to claim 2, characterized in that, The other end of the connecting pipe (230) is provided with multiple air outlets (231), and the multiple air outlets (231) have different diameters. The first simulation mechanism (200) also includes multiple connecting hoses with different diameters and multiple leakage control components (220). One end of the connecting hose is provided corresponding to the air outlet (231), and the other end of the connecting hose is provided corresponding to the leakage control component (220).

4. The pipeline damage simulation and testing device for deep-water underwater production systems according to claim 3, characterized in that, The leakage control assembly (220) includes a solenoid valve (221), a gas flow meter (222), and a needle valve assembly (223) connected together. The other end of the connecting pipe (230) is connected to the solenoid valve (221), and one end of the leakage pipe is connected to the needle valve assembly (223). The solenoid valve (221) is used to control the opening and closing of the leaked gas from the first pipeline (210) to the leakage pipe. The needle valve assembly (223) is used to control the flow rate of the leaked gas in the leakage pipe. The gas flow meter (222) is used to detect the flow rate of the leaked gas.

5. The pipeline damage simulation and testing device for deep-water submersible production systems according to claim 2, characterized in that, The first pipeline (210) includes a first pipe section (211) and a second pipe section (212). The first pipe section (211) is disposed inside the box (100) along the width direction of the box (100). The second pipe section (212) is disposed on the box (100). One end of the second pipe section (212) is located on one side of the box (100) in the width direction and communicates with one end of the first pipe section (211). The other end of the second pipe section (212) is located on the other side of the box (100) in the width direction and communicates with the other end of the first pipe section (211). The leakage hole is disposed on the first pipe section (211). The gas delivery mechanism (500) is connected to the second pipe section (212). The first simulation mechanism (200) also includes a first pump body (240). The first pump body (240) is disposed on the second pipe section (212). The first pump body (240) is used to control the flow of gas in the first pipe section (211) and the second pipe section (212). A heat exchanger and a temperature detection device are disposed on the first pipe (210). The temperature detection device detects the temperature of the first pipe (210). The heat exchanger is used to control the temperature of the gas medium in the first pipe (210).

6. The pipeline damage simulation and testing device for deep-water submersible production systems according to claim 1, characterized in that, The second simulation mechanism (300) also includes two flow-generating irregular cylinders (330), each of which is provided with a flow channel for liquid flow. One end of the second pipe (310) is connected to the box (100) through one of the flow-generating irregular cylinders (330), and the other end of the second pipe (310) is connected to the box (100) through the other flow-generating irregular cylinder (330). The cross-sectional dimensions of the flow-generating irregular cylinder (330) uniformly impact the second pipe (310) in the direction from the end of the second pipe (310) toward the box (100).

7. The pipeline damage simulation and testing device for deep-water submersible production systems according to claim 1, characterized in that, The third pipeline (410) includes a third pipe section (411) and a fourth pipe section (412). The third pipe section (411) is disposed inside the box (100) along the width direction of the box (100). The fourth pipe section (412) is disposed on the box (100). One end of the fourth pipe section (412) is located on one side of the box (100) in the width direction and is connected to one end of the third pipe section (411). The other end of the fourth pipe section (412) is located on the other side of the box (100) in the width direction and is connected to the other end of the third pipe section (411). The detection element is disposed on the third pipe section (411). The gas delivery mechanism (500) is connected to the fourth pipe section (412). The third simulation mechanism (400) also includes a second pump body (420), which is disposed on the fourth pipe section (412). The second pump body (420) is used to control the flow of fluid medium in the third pipe section (411) and the fourth pipe section (412).

8. The pipeline damage simulation and testing device for deep-water submersible production systems according to claim 1, characterized in that, The gas delivery mechanism (500) includes a gas storage tank (510), a gas delivery pipeline, and a gas compressor (520). The gas storage tank (510) is located on one side of the housing (100). The gas compressor (520) is connected to the gas storage tank (510) through the gas delivery pipeline. A communication mechanism (530) is provided between the gas storage tank (510) and the first pipeline (210) and the third pipeline (410) to enable the gas storage tank (510) to be connected to the first pipeline (210) and the third pipeline (410).

9. The pipeline damage simulation and testing device for deep-water submersible production systems according to claim 8, characterized in that, The connecting mechanism (530) includes a three-way connector (531), a first vent pipe and a second vent pipe. The three-way connector (531) has an air inlet, a first air outlet and a second air outlet. The air outlet of the gas storage tank (510) is connected to the air inlet of the three-way connector (531). The first air outlet is connected to the first pipeline (210) through the first vent pipe. The second air outlet is connected to the third pipeline (410) through the second vent pipe. The first vent pipe is equipped with a first pressure regulating valve (532) for adjusting the gas pressure. The second vent pipe is equipped with a second pressure regulating valve (533) for adjusting the gas pressure.

10. The pipeline damage simulation and testing device for deep-water submersible production systems according to claim 1, characterized in that, It also includes a console (610) and a frame (620), the housing (100) and the console (610) are both mounted on the frame (620), and the console (610) is connected to the leakage control component (220), the drive component (320), the water supply mechanism and the gas supply mechanism (500) respectively.

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