Dredging pipeline air-entrapping vibration rheological resistance reduction integrated equipment and application method

Abstract

The invention discloses dredging pipeline air-entrapping vibration rheological resistance reduction integrated equipment which comprises an air generation assembly, an air-entrapping resistance reduction assembly and a vibration resistance reduction assembly. The gas generation assembly is communicated with the gas adding and resistance reducing assembly and the vibration and resistance reducing assembly, the gas adding and resistance reducing assembly and the vibration and resistance reducing assembly are both communicated with a dredging pipeline, and the vibration and resistance reducing assembly is located on the upstream of the gas adding and resistance reducing assembly; wherein the dredging pipeline is communicated through the air-entrapping resistance-reducing assembly and the vibration resistance-reducing assembly, so that the synergistic resistance-reducing function of air-entrapping resistance-reducing and vibration rheological resistance-reducing on the dredging pipeline is realized. The gas generation assembly comprises an air compressor, and the output end of the air compressor communicates with a gas conveying pipeline. According to the dredging pipeline air-entrapping vibration rheological resistance reduction integrated equipment and the application method, the existing defects are overcome, air-entrapping and vibration rheological resistance reduction are fused, dual utilization of air is achieved, and the overall resistance reduction efficiency and the system integration degree are improved.

Description

Technical Field

[0001] This invention relates to an integrated device and application method for aeration, vibration, rheology and drag reduction of dredged pipelines. Background Technology

[0002] In dredging projects, when transporting high-concentration slurry through pipelines, the pipeline resistance for solid-liquid two-phase flow is much higher than that for single-phase flow, resulting in high pumping energy consumption, easy pipeline blockage, and limited transport distance.

[0003] Pipeline drag reduction methods generally include: ① adding polymer or lubricant to reduce frictional resistance through the interaction of polymer molecules with turbulence; ② adding fibrous materials to reduce drag by suppressing turbulent pulsation; ③ adding fine-particle sludge to change the fluid particle distribution and reduce viscosity; ④ adding gas to form a bubble layer or surface film, lubricating the pipe wall and reducing frictional resistance; ⑤ vibration-rheological drag reduction to change the rheological properties of slurry by mechanical vibration or flow-induced vibration, thereby reducing its shear viscosity and internal friction.

[0004] These technologies each have their own advantages and disadvantages depending on the specific transportation needs and operating conditions. Among them, gas injection drag reduction technology injects gas into the fluid to form a gas-liquid mixture. This technology not only significantly reduces fluid resistance but also helps suspend solid particles, preventing sedimentation and thus keeping the pipeline unobstructed. In existing patents and technologies, vibration is applied to pump devices or pipeline systems to improve fluid flow stability, but this is mostly targeted at specific scenarios such as large pumping stations.

[0005] However, existing aeration and vibration rheological drag reduction technologies are often implemented independently, resulting in complex equipment, inconvenient operation, and a lack of integrated design, making it impossible to achieve synergistic optimization of the two mechanisms. For example, in patents for pneumatic conveying slurry, although a bubble surface film is introduced for drag reduction, it is not combined with a vibration mechanism. Similarly, while modular aeration devices are modular, they do not integrate vibration rheological functionality. These shortcomings lead to limited drag reduction effects and an inability to adapt to dredging needs under varying operating conditions.

[0006] Therefore, in response to the above problems, a device and application method for integrated gas-filled vibration rheology drag reduction in dredging pipelines are proposed. Summary of the Invention

[0007] The purpose of this invention is to overcome the existing defects and provide an integrated equipment and application method for gas filling and vibration rheological drag reduction in dredging pipelines. It combines gas filling and vibration rheological drag reduction to achieve dual utilization of gas, improve overall drag reduction efficiency and system integration.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an integrated device for dredging pipeline gas filling, vibration rheology and drag reduction, comprising a gas generating component, a gas filling and drag reduction component and a vibration drag reduction component; The gas generating component is connected to the gas filling and drag reduction component and the vibration drag reduction component respectively. Both the gas filling and drag reduction component and the vibration drag reduction component are connected to the dredging pipeline. The vibration drag reduction component is located upstream of the gas filling and drag reduction component. Among them, the dredging pipeline is connected by the gas-filling drag reduction component and the vibration drag reduction component to achieve the synergistic drag reduction function of gas-filling drag reduction and vibration rheological drag reduction of the dredging pipeline.

[0009] Preferably, the gas generating component includes an air compressor, the output end of which is connected to a gas delivery pipeline; the gas delivery pipeline is connected to the gas supply drag reduction component and the vibration drag reduction component respectively.

[0010] Preferably, the vibration damping component includes a vibration generator, the vibration plate of which is connected to the outer wall of the dredging pipe; the vibration generator is connected to the gas supply pipe through a vibration gas supply pipe; and a second electric ball valve is installed on the vibration gas supply pipe.

[0011] Preferably, the gas supply and drag reduction assembly includes an upstream gas pipeline, a midstream gas pipeline, and a downstream gas pipeline; one end of the gas pipeline away from the air compressor is connected in parallel to the upstream gas pipeline, the midstream gas pipeline, and the downstream gas pipeline; the other end of the upstream gas pipeline is connected to the upper sidewall of the dredging pipeline; the other end of the midstream gas pipeline is connected to the middle section of the dredging pipeline; and the other end of the downstream gas pipeline is connected to the lower sidewall of the dredging pipeline. A fourth electric ball valve is installed on the upstream gas pipeline; a fifth electric ball valve is installed on the midstream gas pipeline; and a sixth electric ball valve is installed on the downstream gas pipeline.

[0012] Preferably, a first electric ball valve and a third electric ball valve are respectively installed on the gas transmission pipeline, and the vibrating gas transmission pipeline is located between the first electric ball valve and the third electric ball valve.

[0013] Preferably, a first pressure gauge and a second pressure gauge are respectively installed at both ends of the dredging pipeline.

[0014] Preferably, it also includes a PLC controller, which is communicatively connected to the gas generating component, the gas filling and drag reduction component, and the vibration drag reduction component.

[0015] An application method for an integrated aerodynamic drag reduction device for dredging pipelines includes the following steps: Step 1: Equipment installation; Install the integrated equipment on the long straight section of the dredged pipeline to capture the area of ​​greatest resistance; ensure that the distance between the first and second pressure gauges is fixed, and input the L value into the PLC controller; fix the vibrating plate tightly to the dredged pipeline wall with bolts to ensure that there is no leakage between the gas pipeline and each other; connect the PLC controller to the air compressor and each electric ball valve, and calibrate all sensors; L is the distance between the first and second pressure gauges; Step two, initialization and monitoring; The air compressor is started, and the initial mode is low gas input. The first and second pressure gauges monitor P1 and P2 in real time. The PLC controller calculates the resistance coefficient f. The mud density ρ and flow velocity v are obtained through additional sensors. The PLC controller self-checks all valves and vibrators to ensure there are no faults. Step 3: Calculation of drag coefficient and selection of mode; Calculation formula Threshold control mode based on f-value: If f≤f low This indicates low resistance and low intensity mode: most valves are closed, only a small amount of gas is added or low-frequency vibration occurs.

[0016] If f low <f≤f medium This indicates medium resistance and uses a single mode: prioritize gas injection to reduce drag, open the third and fifth electric ball valves, inject gas at a volume ratio of 5%-10% to form a uniform bubble layer; or use vibration rheology to reduce drag, open the second and fourth electric ball valves, and set the vibration frequency to 30-50Hz, optimized for high-viscosity mud.

[0017] If f>f medium This indicates high resistance and employs a combined mode: gas diversion is achieved through regulation via a second and third electric ball valve, while simultaneously driving the vibration generator and injecting bubbles, increasing the total gas volume to the maximum to achieve a synergistic effect. Step 4, Gas delivery control; The PLC controller uses a PID algorithm to adjust the air compressor speed and the opening degree of each electric ball valve to achieve precise control of the gas flow rate Q. The PLC controller dynamically adjusts the resistance coefficient threshold f based on the dredged pipeline. low and f medium； When the pipeline length exceeds 1 km, the threshold is reduced by 20% (e.g., f). low From 0.03 to 0.024, f mediumThe pressure is reduced from 0.05 to 0.04 to adapt to the impact of resistance accumulation during long-distance transportation; the PLC controller integrates a PID (proportional-integral-derivative) algorithm, which precisely controls the gas flow rate Q by adjusting the air compressor speed and the opening of each electric ball valve in real time, ensuring the stability of the drag reduction effect under varying operating conditions.

[0018] Step 5: Run optimization and stop; Continuously monitor changes in resistance; if f decreases steadily, gradually reduce gas input to save energy.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: The integrated equipment and application method for gas filling and vibration rheological drag reduction in dredged pipelines improves efficiency and reduces energy consumption by setting up a gas generating component, a gas filling and drag reduction component, a vibration drag reduction component, and a PLC controller. Through the synergistic optimization of gas filling and vibration rheological drag reduction, the drag reduction efficiency is improved, the conveying distance is extended and the pumping power requirement is reduced, significantly improving the efficiency of dredging projects and reducing operating costs.

[0020] Enhanced intelligent adaptability and safety: Integrated real-time pressure monitoring and segmented valve control enable adaptive mode switching to meet varying operating conditions; multiple sensors and emergency mechanisms ensure system stability, achieving synergistic optimization of gas injection drag reduction and vibration rheological drag reduction, improving delivery efficiency, reducing energy consumption, and adapting to varying operating conditions. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is an isometric drawing of the integrated aeration, vibration, rheology, and drag reduction equipment for dredging pipelines according to the present invention. Figure 2 This is a front view of the integrated aeration, vibration, rheology, and drag reduction device for dredging pipelines according to the present invention. Figure 3 This is a partial detail of the integrated aeration, vibration, rheology, and drag reduction device for dredging pipelines according to the present invention. Figure 4 This is a partial top view of the integrated aeration, vibration, rheology, and drag reduction device for dredging pipelines according to the present invention.

[0022] In the diagram: 1. Dredging pipeline; 2. First pressure gauge; 3. Second pressure gauge; 4. Gas pipeline; 5. Air compressor; 6. Vibration generator; 7. Vibrating plate; 8. First electric ball valve; 9. Second electric ball valve; 10. Third electric ball valve; 11. Fourth electric ball valve; 12. Fifth electric ball valve; 13. Sixth electric ball valve. Detailed Implementation

[0023] 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, and 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.

[0024] like Figure 1-4 As shown, an integrated device for aeration and vibration-rheological drag reduction in a dredged pipeline includes a gas generating component, an aeration drag reduction component, and a vibration drag reduction component. The gas generating component is connected to both the aeration drag reduction component and the vibration drag reduction component, both of which are connected to the dredged pipeline 1. The vibration drag reduction component is located upstream of the aeration drag reduction component. The connection between the aeration drag reduction component and the vibration drag reduction component in the dredged pipeline 1 achieves a synergistic drag reduction function through aeration drag reduction and vibration-rheological drag reduction. A first pressure gauge 2 and a second pressure gauge 3 are respectively installed at both ends of the dredged pipeline 1.

[0025] Specifically, dredging pipeline 1 is the main conveying channel for slurry transportation. Its diameter is designed according to project requirements (e.g., 300-1000mm), and it is made of wear-resistant steel with a smooth inner wall. There are air filling holes and pressure gauge installation holes on the upper, middle, and lower parts of the pipeline.

[0026] Specifically, the first pressure gauge 2 and the second pressure gauge 3 are installed upstream and downstream of the dredging pipeline 1, respectively, at a fixed distance L, to monitor the slurry pressures P1 and P2 within the pipeline in real time. The pressure gauges employ high-precision digital sensors with a measurement range of 0-2 MPa, an accuracy of ±0.1%, and a response time of <1 second. Data is transmitted to the control system via wireless 4G or wired connection.

[0027] Specifically, the gas generating component includes an air compressor 5, the output end of which is connected to a gas supply pipe 4; the gas supply pipe 4 is connected to a gas filling and drag reduction component and a vibration drag reduction component.

[0028] Specifically, air compressor 5 serves as the gas source, providing compressed air with an output pressure of 0.2-1.0 MPa and an adjustable flow rate of 0-50 m³ / h. 3 / h. Connected to downstream components via gas pipeline 4, it supports variable frequency control (VFD) to regulate gas output.

[0029] Specifically, the vibration damping component includes a vibration generator 6, the vibration plate 6 of which is connected to the outer wall of the dredging pipe 1; the vibration generator 6 is connected to the gas supply pipe 4 through the vibration gas supply pipe; and a second electric ball valve 9 is installed on the vibration gas supply pipe.

[0030] Specifically, the vibration generator 6 and the vibrating plate 7: The vibration generator 6 is pneumatic, using compressed air as a power source to drive the vibrating plate 7 to generate mechanical vibration. The vibrating plate 7 is installed on the wall of the dredging pipe 1, is made of stainless steel, and has an adjustable vibration frequency of 10-100Hz and an amplitude of 0.5-5mm. Vibration changes the rheological properties of the mud, reducing its shear viscosity.

[0031] Specifically, the gas refueling and drag reduction assembly includes an upstream gas pipeline, a midstream gas pipeline, and a downstream gas pipeline; the end of the gas pipeline 4 furthest from the air compressor 5 is connected in parallel to the upstream, midstream, and downstream gas pipelines, and the other end of the upstream gas pipeline is connected to the upper side wall of the dredging pipeline 1; the other end of the midstream gas pipeline is connected to the middle part of the dredging pipeline 1; the other end of the downstream gas pipeline is connected to the lower side wall of the dredging pipeline 1; a fourth electric ball valve 11 is installed on the upstream gas pipeline; a fifth electric ball valve 12 is installed on the midstream gas pipeline; and a sixth electric ball valve 13 is installed on the downstream gas pipeline.

[0032] Specifically, a first electric ball valve 8 and a third electric ball valve 10 are respectively installed on the gas transmission pipeline 4, and the vibrating gas transmission pipeline is located between the first electric ball valve 8 and the third electric ball valve 10.

[0033] Specifically, the first electric ball valve 8 is installed at the outlet of the air compressor 5 to control the total gas input.

[0034] Specifically, the second electric ball valve 9 and the third electric ball valve 10 split the gas, one path leading to the vibration generator 6 (vibration rheological path) and the other path leading to the gas nozzle (gas filling path); the splitting ratio can be dynamically adjusted by the control system.

[0035] Specifically, the fourth electric ball valve 11, the fifth electric ball valve 12, and the sixth electric ball valve 13 are located at the upper, middle, and lower positions of the gas filling path, respectively, for fine adjustment and segmented control of the gas flow rate in the filling path. The fourth electric ball valve 11 is located upstream of the gas filling path; the fifth electric ball valve 12 is located midstream of the gas filling path; and the sixth electric ball valve 13 is located downstream of the gas filling path. These valves are equipped with flow sensor feedback to achieve closed-loop control, ensuring uniform gas flow and segmented optimization in the gas filling path. All electric ball valves use electric actuators, support remote control, have an adjustable opening degree of 0-100%, a response time of <5s, and are made of stainless steel for corrosion resistance.

[0036] Specifically, the gas filling port and the vibration unit are arranged sequentially along the pipeline axis, with the vibration unit located upstream and the gas filling port downstream. This arrangement forms a synergistic drag reduction process of "vibration first, then gas filling".

[0037] Specifically, when compressed air is diverted to the vibration generator 6 via the second electric ball valve 9, the vibration unit first generates periodic disturbances on the pipe wall and in the mud fluid, disrupting the spatial network structure inside the mud, changing the rheological properties of the mud, and reducing its shear viscosity and internal friction. This stage mainly achieves the "pre-rheological" regulation of the fluid.

[0038] Subsequently, another portion of compressed air is injected downstream of the pipeline through the third electric ball valve 10 and the air nozzle. The air bubbles are more easily distributed evenly in the slurry that has been broken and loosened by vibration, forming a lubricating air film layer, which significantly improves the air filling efficiency and drag reduction effect.

[0039] It also includes a PLC controller, which communicates with the gas generating assembly, the gas filling and drag reduction assembly, and the vibration drag reduction assembly. It receives pressure gauge data and calculates the drag coefficient f, using the following formula: ) Where D is the pipe diameter, ρ is the mud density, v is the flow velocity, and L is the pressure gauge spacing, the system automatically adjusts the drag reduction mode and gas volume according to preset thresholds. The system can also be connected to an electromagnetic flowmeter to monitor the mud flow velocity v, and a density sensor to obtain ρ in real time. For the segmented valves along the gas dispensing path, the system can independently control the opening of each valve to achieve gradient gas dispensing. The equipment is integrated into the dredged pipeline section, featuring a modular design for easy installation and maintenance. The gas path supports splitting: part of the gas drives the vibration generator 6, while the rest is directly injected into the pipeline to form bubbles.

[0040] Low-concentration mud transportation scenarios In this embodiment, the integrated equipment is used for low-concentration slurry transportation. The diameter of the dredging pipe 1 is designed according to engineering requirements, and the distance between the first pressure gauge 2 and the second pressure gauge 3 is fixed. Initial monitoring shows that the resistance coefficient is in the medium range. The PLC controller automatically selects a single gas injection and drag reduction mode: opening the first electric ball valve 8 and the third electric ball valve 10, and performing fine control through the segmented valves fourth electric ball valve 11, fifth electric ball valve 12, and sixth electric ball valve 13. Specifically, the fourth electric ball valve 11 (upstream) has a larger opening to introduce the main gas flow and ensure that the initial gas enters the gas injection path evenly; the fifth electric ball valve 12 (midstream) has a moderate opening to stabilize the gas distribution and prevent local bubble accumulation; the sixth electric ball valve 13 (downstream) has a smaller opening to optimize the final injection and achieve uniform gas film coverage of the inner wall of the pipe. The gas volume ratio is controlled within a suitable range, and the output pressure and flow rate of the air compressor 5 are adjusted according to demand. The vibration generator 6 is kept off to avoid unnecessary energy consumption.

[0041] After operation, pipeline resistance decreased significantly, and conveying efficiency improved. Simultaneously, the PLC controller uses a PID algorithm to monitor pressure changes in real time and periodically adjust valve openings to ensure stable resistance reduction.

[0042] High-concentration mud transportation scenarios In this embodiment, the equipment is designed for transporting high-concentration slurry. The pipe diameter is designed according to engineering requirements, and the pressure gauge spacing is fixed. The initial resistance coefficient exceeds the high resistance threshold. The system switches to combined mode: the first electric ball valve 8 is opened, and gas is split through the second electric ball valve 9 and the third electric ball valve 10 (partially used for the vibration rheological path, and partially used for the aeration path). The vibration generator 6 drives the vibrating plate 7, with the frequency and amplitude set according to requirements to reduce slurry viscosity and optimize energy efficiency through pulse vibration mode. In the aeration path, the fourth electric ball valve 11 has a large opening (high flow rate upstream to ensure rapid gas diffusion); the fifth electric ball valve 12 has a moderate opening (fine-tuning distribution in the midstream to maintain bubble stability); and the sixth electric ball valve 13 has a small opening (optimized injection downstream to prevent bubble escape). The gas volume ratio is adjusted according to requirements, and the compressor pressure and total flow rate are adapted to the operating conditions.

[0043] The results show that the overall drag reduction effect is significant, energy consumption is reduced, and it is suitable for long-distance pipeline transportation. Monitoring shows that the drag coefficient is significantly reduced, the flow velocity is increased, and the mud deposition rate is reduced. The control system dynamically adjusts the diversion ratio according to real-time density changes, further improving the drag reduction synergistic effect.

[0044] An application method for an integrated aerodynamic drag reduction device for dredging pipelines includes the following steps: Step 1: Equipment installation; The integrated device is installed on the long straight section of the dredged pipeline 1 to capture the area of ​​greatest resistance; the distance between the first pressure gauge 2 and the second pressure gauge 3 is fixed, and the L value is input into the PLC controller; the vibrating plate 7 is fixed tightly to the wall of the dredged pipeline 1 with bolts to ensure that there is no leakage when the air supply pipeline 4 is connected to each pipeline; the PLC controller is connected to the air compressor 5 and each electric ball valve for communication, and the sensors are calibrated. L is the distance between the first pressure gauge 2 and the second pressure gauge 3; Step two, initialization and monitoring; Start the air compressor 5. The initial mode is low gas input. The first pressure gauge 2 and the second pressure gauge 3 monitor P1 and P2 in real time. The PLC controller calculates the resistance coefficient f. The mud density ρ and flow velocity v are obtained through additional sensors. The PLC controller performs a self-check on the valves and vibrator to ensure there are no faults. Step 3: Calculation of drag coefficient and selection of mode; Calculation formula Threshold control mode based on f-value: If f≤f lowThis indicates low resistance and low intensity mode: most valves are closed, only a small amount of gas is added or low-frequency vibration occurs.

[0045] If f low <f≤f medium This indicates medium resistance and uses a single mode: prioritize gas injection to reduce drag, open the third electric ball valve 10 and the fifth electric ball valve 12, inject gas at a volume ratio of 5%-10% to form a uniform bubble layer; or use vibration rheology to reduce drag, open the second electric ball valve 9 and the fourth electric ball valve 11, with a vibration frequency of 30-50Hz, optimized for high-viscosity mud.

[0046] If f>fmedium, it indicates high resistance. A combined mode is adopted: gas is split and regulated by the second electric ball valve 9 and the third electric ball valve 10, while simultaneously driving the vibration generator 6 and injecting bubbles, increasing the total gas volume to the maximum to achieve a synergistic effect. threshold f low and f medium It can be preset or dynamically optimized based on mud concentration (e.g., increase by 20% when >20%), particle size (fine particles are given priority for air addition) and pipeline length (the threshold is reduced when >1km), and uses machine learning algorithms to adapt based on historical data; Machine learning adaptive algorithms The system collects historical operational data including parameters such as slurry concentration, flow rate, pressure fluctuation, gas flow rate, and drag reduction rate. Through multi-dimensional data modeling, a functional relationship between gas injection and drag reduction effect is established. The control system employs machine learning algorithms based on Gradient Boosting Tree (GBDT) or Long Short-Term Memory (LSTM) networks to perform pattern recognition and parameter prediction for different operating conditions (such as high concentration, fine particles, and long-distance pipelines), achieving control over the threshold f. flow and f medium The algorithm employs adaptive optimization. For example, when it detects that the pipeline length exceeds 1 km or the mud concentration exceeds a set threshold (such as 20%), the algorithm automatically adjusts the target value of the gas filling valve opening to achieve a more uniform gas distribution and the best effect of reducing resistance.

[0047] PID Precision Control Algorithm The control system uses a PID algorithm to adjust the speed of the air compressor 5 and the opening of the third electric ball valve 10 in real time to achieve precise control of the gas flow rate Q. The PID controller dynamically calculates the adjustment amount u(t) = Kpe(t) + Ki∫e(t)dt + Kdde(t) / dt based on the deviation e(t) = Qset−Qreal between the set flow target Qset and the real-time measured value Qreal. When the system detects fluctuations in gas pressure or flow rate, the controller immediately adjusts the air compressor frequency and valve opening to keep the gas injection in a stable state, thereby ensuring a continuous and consistent drag reduction effect.

[0048] Step 4, Gas delivery control; The PLC controller uses a PID algorithm to adjust the speed of the air compressor 5 and the opening degree of each electric ball valve to achieve precise control of the gas flow rate Q. The PLC controller dynamically adjusts the resistance coefficient threshold f based on the dredged pipeline 1. low and f medium； When the pipeline length exceeds 1 km, the threshold is reduced by 20%, for example, f. low From 0.03 to 0.024, f medium The value was reduced from 0.05 to 0.04 to accommodate the impact of resistance accumulation during long-distance transportation; the PLC controller integrates a PID proportional-integral-derivative algorithm, which precisely controls the gas flow rate Q by adjusting the air compressor speed 5 and the opening degree of each electric ball valve in real time, ensuring the stability of the drag reduction effect under varying operating conditions.

[0049] Step 5: Run optimization and stop; Continuously monitor changes in resistance; if f decreases steadily, gradually reduce gas input to save energy.

[0050] This integrated equipment and application method for gas-filling, vibration-rheological drag reduction in dredged pipelines improves efficiency and reduces energy consumption by setting up a gas generation component, a gas-filling drag reduction component, a vibration drag reduction component, and a PLC controller. Through the synergistic optimization of gas filling and vibration-rheological drag reduction, drag reduction efficiency is improved, the conveying distance is extended, and the pumping power requirement is reduced, significantly improving the efficiency of dredging projects and reducing operating costs.

[0051] Enhanced intelligent adaptability and safety: Integrated real-time pressure monitoring and segmented valve control enable adaptive mode switching to meet varying operating conditions; multiple sensors and emergency mechanisms ensure system stability, achieving synergistic optimization of gas injection drag reduction and vibration rheological drag reduction, improving delivery efficiency, reducing energy consumption, and adapting to varying operating conditions.

[0052] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated device for dredging pipelines, incorporating aeration, vibration, rheology, and drag reduction, characterized in that: This includes a gas generating assembly, a gas filling and drag reduction assembly, and a vibration drag reduction assembly; The gas generating component is connected to the gas filling and drag reduction component and the vibration drag reduction component respectively. The gas filling and drag reduction component and the vibration drag reduction component are both connected to the dredging pipe (1). The vibration drag reduction component is located upstream of the gas filling and drag reduction component. Among them, the dredging pipeline (1) is connected by the gas-filling drag reduction component and the vibration drag reduction component to achieve the synergistic drag reduction function of gas-filling drag reduction and vibration rheological drag reduction of the dredging pipeline (1).

2. The integrated equipment for dredging pipeline aeration, vibration, rheology, and drag reduction according to claim 1, characterized in that, The gas generating assembly includes an air compressor (5), the output end of which is connected to a gas delivery pipeline (4); the gas delivery pipeline (4) is connected to the gas supply drag reduction assembly and the vibration drag reduction assembly respectively.

3. The integrated equipment for dredging pipeline aeration, vibration, rheology, and drag reduction according to claim 2, characterized in that, The vibration damping assembly includes a vibration generator (6), the vibration plate (6) of the vibration generator (6) is connected to the outer wall of the dredging pipe (1); the vibration generator (6) is connected to the gas transmission pipe (4) through the vibration gas transmission pipe; a second electric ball valve (9) is provided on the vibration gas transmission pipe.

4. The integrated equipment for dredging pipeline aeration, vibration, rheology, and drag reduction according to claim 2, characterized in that, The gas supply and drag reduction assembly includes an upstream gas pipeline, a midstream gas pipeline, and a downstream gas pipeline; one end of the gas pipeline (4) away from the air compressor (5) is connected in parallel to the upstream gas pipeline, the midstream gas pipeline, and the downstream gas pipeline, and the other end of the upstream gas pipeline is connected to the upper side wall of the dredging pipeline (1); the other end of the midstream gas pipeline is connected to the middle part of the dredging pipeline (1); and the other end of the downstream gas pipeline is connected to the lower side wall of the dredging pipeline (1). A fourth electric ball valve (11) is installed on the upstream gas transmission pipeline; a fifth electric ball valve (12) is installed on the midstream gas transmission pipeline; and a sixth electric ball valve (13) is installed on the downstream gas transmission pipeline.

5. The integrated equipment for dredging pipeline aeration, vibration, rheology, and drag reduction according to claim 3, characterized in that, The gas transmission pipeline (4) is equipped with a first electric ball valve (8) and a third electric ball valve (10), and the vibrating gas transmission pipeline is located between the first electric ball valve (8) and the third electric ball valve (10).

6. The integrated equipment for dredging pipeline aeration, vibration, rheology, and drag reduction according to claim 1, characterized in that, The dredging pipe (1) is equipped with a first pressure gauge (2) and a second pressure gauge (3) at both ends.

7. The integrated equipment for dredging pipeline aeration, vibration, rheology, and drag reduction according to claim 1, characterized in that, It also includes a PLC controller, which is communicatively connected to the gas generating component, the gas filling and drag reduction component, and the vibration drag reduction component.

8. A method for applying the integrated aeration, vibration, rheology, and drag reduction equipment for dredging pipelines as described in claim 1, characterized in that, Includes the following steps: Step 1: Equipment installation; Install the integrated device on the long straight section of the dredged pipe (1) to capture the area of ​​maximum resistance; ensure that the distance between the first pressure gauge (2) and the second pressure gauge (3) is fixed, and input the L value into the PLC controller; fix the vibrating plate (7) tightly to the wall of the dredged pipe (1) with bolts to ensure that there is no leakage when the gas pipeline (4) is connected to each pipeline; connect the PLC controller to the air compressor (5) and each electric ball valve, and calibrate all sensors; L is the distance between the first pressure gauge (2) and the second pressure gauge (3); Step two, initialization and monitoring; Start the air compressor (5), the initial mode is low gas input, the first pressure gauge (2) and the second pressure gauge (3) monitor P1 and P2 in real time, the PLC controller calculates the resistance coefficient f; the mud density ρ and flow velocity v are obtained through additional sensors, the PLC controller self-checks all valves and vibrators to ensure no faults; Step 3: Calculation of drag coefficient and selection of mode; Calculation formula Threshold control mode based on f-value: If f≤f low This indicates low resistance and low intensity mode: most valves are closed, only a small amount of gas is added or low-frequency vibration is used. If f low <f≤f medium , indicating medium resistance, adopting a single mode: prioritize gas addition to reduce drag, open the third electric ball valve (10) and the fifth electric ball valve (12), inject gas volume ratio of 5%-10% to form a uniform bubble layer; Or, use vibration rheological drag reduction, open the second electric ball valve (9) and the fourth electric ball valve (11), with a vibration frequency of 30-50Hz, optimized for high-viscosity mud; If f>f medium , indicating high resistance, adopting a combined mode: gas diversion, regulated by the second electric ball valve (9) and the third electric ball valve (10), while simultaneously driving the vibration generator (6) and injecting bubbles, increasing the total gas volume to the maximum, achieving a synergistic effect; Step 4, Gas delivery control; The PLC controller uses a PID algorithm to adjust the speed of the air compressor (5) and the opening degree of each electric ball valve to achieve precise control of the gas flow rate Q; The PLC controller dynamically adjusts the resistance coefficient threshold f based on the dredged pipeline (1). low and f medium； When the pipeline length exceeds 1 km, the threshold is reduced by 20% (e.g., f). low From 0.03 to 0.024, f medium The value was reduced from 0.05 to 0.04 to adapt to the effect of resistance accumulation in long-distance transportation; the PLC controller integrates the PID (proportional-integral-derivative) algorithm, and precisely controls the gas flow rate Q by adjusting the speed of the air compressor (5) and the opening degree of each electric ball valve in real time, so as to ensure the stability of the drag reduction effect under different working conditions; Step 5: Run optimization and stop; Continuously monitor changes in resistance; if f decreases steadily, gradually reduce gas input to save energy.

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