A vortex flow equalizing and drag reducing device for slurry pipeline transportation

Abstract

The application provides a vortex flow equalization and drag reduction device for slurry pipeline transportation, comprising: a vortex flow equalization and drag reduction pipe section rotatably connected with a slurry pipeline; a first rotary connection flange having one end connected with the slurry pipeline and the other end connected with one end of the vortex flow equalization and drag reduction pipe section; a second rotary connection flange having one end connected with the other end of the vortex flow equalization and drag reduction pipe section and the other end connected with the slurry pipeline; a rotating system fixed with the vortex flow equalization and drag reduction pipe section; an external gear type flange fixed on the slurry pipeline, connected with the first rotary flange and the slurry pipeline, and engaged with a shaft coupling of the rotating system for transmitting power generated by the rotating system; and a controller connected with the rotating system for adjusting operating parameters of the rotating system. The vortex flow equalization and drag reduction device solves the problems of high transportation resistance of high-concentration slurry in a pipeline and high energy loss of pumping, reduces energy consumption of slurry pipeline transportation and the risk of pipeline blockage of slurry transportation, and improves the production efficiency of dredging operations.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water conservancy engineering, in particular to a vortex flow uniformizing and drag reducing device for slurry pipeline transportation. BACKGROUND

[0002] In order to improve the water resource protection and the ecological quality of the environment in China, a large amount of dredging business needs to be carried out every year, such as excavation and maintenance dredging of harbor basin and waterway, construction of coastal industrial park, artificial island and tourist ecological resort, and dredging for maintaining reservoir capacity and safety. In recent years, the global annual dredging volume is as high as several billion cubic meters, and the total economic volume generated thereby reaches tens of billions of dollars.

[0003] Pipeline transportation of high-concentration slurry is a main transportation method of dredged material in dredging engineering. Looking at these dredging businesses, more than 90% of large-scale dredging engineering is excavated by cutter suction dredger or drag suction dredger, and then the dredged slurry is transported to the destination through the pipeline. The slurry pipeline transportation system is the main energy consumption part of the dredger. Taking the cutter suction dredger as an example, when long-distance transportation of slurry is needed, the energy consumption of the slurry pipeline transportation system can reach 80% of the total energy consumption of the cutter suction dredger, and the energy consumption of the slurry pipeline transportation system of a large cutter suction dredger can reach more than 85% of the total energy consumption. During the slurry transportation process, the sand particles are gradually stratified and deposited at the bottom of the pipeline due to their gravity, which increases the pipeline transportation resistance, and even causes pipe blockage and other problems, forcing the dredger to stop for pipe cleaning, which seriously restricts the production efficiency of dredging. Therefore, it is necessary to propose a corresponding slurry pipeline transportation drag reduction and efficiency improvement method to save energy consumption and improve transportation efficiency, which is the demand of the development of the dredging industry and has very important practical significance and market value.

[0004] There are mainly two kinds of existing pipeline transportation drag reduction technologies. One is to mix other media into the pipeline to form a lubricating layer, and the other is to change the pipe wall material to reduce the pipe wall roughness, so as to reduce the pipeline transportation resistance. However, these methods generally have high cost and limited drag reduction effect, and the existing technology and product can reduce the transportation resistance by about 10%, which has basically reached the upper limit.

[0005] A search of existing technical literature revealed a Chinese patent application (CN202310047758.X) entitled "A Cross-Array Jet-Type Aerated Slurry Transport Device." This patent includes: a liquid transport system and a gas transport system for forming a gas-liquid mixture; a jet system comprising a jet module, an injection module, and a slurry transport module. The jet module is connected to the end of the liquid transport system via a pressurization module to inject the gas-liquid mixture into the slurry transport module. The jet module has multiple diversion ring pipes, each connected to the pressurization module via a diversion straight pipe. Each diversion ring pipe has multiple outlets, with the outlets on adjacent diversion ring pipes staggered. This device uniformly reduces drag, minimizing friction between slurry particles and the pipe wall, reducing resistance loss, extending pipeline lifespan, and preventing slurry accumulation and blockage through jet impact, thus ensuring long-distance slurry transport. Its main drawbacks are: 1) The device involves multiple modules and components, which increases the complexity of system design and maintenance costs; 2) Using jet impact to avoid siltation and blockage may cause some disturbance to the surrounding environment, especially to the aquatic ecosystem; 3) In order to form a gas-liquid mixture and maintain jet impact, a considerable amount of gas and energy is required, which leads to high energy consumption and operating costs, and increases sludge transportation costs.

[0006] The Chinese patent application number is CN201110084475, and the patent title is: "A Method for Reducing Drag in Pipeline Transportation of Residual Sludge." This patent uses powdered insoluble solid particles such as talc or powdered boiler ash as drag-reducing agents for sludge pipeline transportation. These particles are added to the residual sludge to be transported to form a homogeneous mixture. The powdered particles in the drag-reducing agent are incorporated into the solid particles of the sludge, widening the particle size distribution of the residual sludge, reducing the collision and friction between sludge particles, and increasing the thickness of the viscous layer, thereby reducing the flow resistance during pipeline transportation of residual sludge. Its main shortcomings are: 1) It only reduces the internal friction of the sludge during transportation, without reducing the resistance between the sludge and the transportation pipe, resulting in limited drag-reduction effect; 2) It is only suitable for small-scale sludge transportation projects, and the economic benefits of drag reduction are limited.

[0007] The Chinese patent application number is CN202110608384.5, and the patent title is: "A Physical Drag Reduction Device and Method for Oil and Gas Pipelines." The core technology of this patent includes injection holes and a pressure stabilizing chamber. Injection holes are spaced along the drag-reducing pipe section, and the pressure stabilizing chamber is located outside the drag-reducing pipe section and connected to the injection holes. Through a bypass, fluid can be drawn from the main pipeline and then reinjected into the main pipeline via the pressure stabilizing chamber, thus converting turbulent flow into laminar flow to reduce resistance. Its main drawbacks are: 1) The device's actual conversion of turbulent flow into laminar flow may reduce fluid transport efficiency, especially under high flow and high pressure conditions, limiting the economic benefits of drag reduction; 2) The complexity of components such as the bypass and pressure stabilizing chamber leads to maintenance difficulties, requiring regular inspection and repair, increasing operating costs and downtime.

[0008] In view of this, the present invention is proposed. Summary of the Invention

[0009] To address the shortcomings of existing technologies, the purpose of this application is to provide a vortex flow equalization and drag reduction device for mud pipeline transportation, comprising:

[0010] The vortex flow equalization and drag reduction pipe section is rotatably connected to the mud pipeline to reduce the conveying resistance;

[0011] The first rotary connecting flange is connected at one end to the mud pipe and at the other end to one end of the vortex flow equalization and drag reduction pipe section.

[0012] The second rotary connecting flange is connected at one end to the other end of the vortex flow equalization and drag reduction pipe section, and at the other end to the mud pipe.

[0013] A rotating system, fixed to the vortex flow equalization and drag reduction pipe section, is used to provide power to the vortex flow equalization and drag reduction pipe section.

[0014] An external gear flange is fixed on the mud pipe, connects the first rotating flange to the mud pipe, and meshes with the coupling of the rotating system to transmit the power generated by the rotating system.

[0015] The controller, connected to the rotating system, is used to evaluate the drag reduction efficiency based on the conveying parameters of the mud in the pipe before and after drag reduction, and to adjust the operating parameters of the rotating system in real time based on the evaluation results.

[0016] Furthermore, the vortex flow equalization and drag reduction pipe section also includes guide vanes, which are disposed inside the vortex flow equalization and drag reduction pipe section and serve as guides for transmitting the vortex flow equalization effect.

[0017] Furthermore, the guide vanes are multiple and are evenly spirally distributed on the inner wall of the vortex flow equalization and drag reduction pipe section.

[0018] Furthermore, the number of guide vanes is 12.

[0019] Furthermore, the vortex flow equalization and drag reduction pipe section and the guide vane are integrally printed.

[0020] Furthermore, it also includes an external gear flange, which is disposed on the mud pipe and meshes with the rotating system to transmit the power generated by the rotating system.

[0021] Furthermore, the rotating system includes: a rotary motor and a coupling;

[0022] The rotary motor is connected to the controller to generate rotational power, and the controller controls the rotational speed of the rotary motor.

[0023] One end of the coupling is connected to the rotary motor, and the other end meshes with the external gear flange, which is used to directly transmit the rotational power generated by the rotary motor to the vortex flow equalization and drag reduction pipe section.

[0024] Furthermore, the first rotary connecting flange, the external gear flange, and the second rotary connecting flange have the same diameter;

[0025] The diameter of the vortex flow equalization and drag reduction pipe section is the same as the diameter of the mud pipe.

[0026] Furthermore, it also includes a signal line, disposed between the controller and the rotating system, for communicating between the controller and the rotating system.

[0027] Furthermore, both the first rotary connecting flange and the second rotary connecting flange adopt 360° cast iron turntable flange hinges;

[0028] The controller employs a high-precision rotation control and data acquisition system.

[0029] Compared with the prior art, this application has at least one of the following beneficial effects:

[0030] 1. This invention is based on the principle that the turbulent structure inside the pipe will develop towards laminar flow after collapsing under strong disturbance. The rotating system is used to make the vortex flow equalization and drag reduction pipe section rotate. The rotational power is transmitted to the mud inside the pipe through the guide vanes, which destroys the turbulent structure of the flow field inside the pipe and induces the homogenization of the mud flow field inside the pipe. This causes the mud transport at the outlet to develop towards laminar flow, thereby reducing the radial velocity gradient of the slurry inside the pipe and thus reducing the shear stress in the slurry, so as to reduce the resistance of the mud pipeline transport.

[0031] 2. This invention uses a vortex flow equalization and drag reduction method. This method innovatively addresses the issue by reducing the radial velocity gradient of the transported slurry. Through the flow equalization effect of high-speed rotation, it fundamentally reduces the transport resistance of the slurry, solving the problem of high transport resistance and high pumping energy loss of high-concentration slurry in pipelines. It can significantly reduce the energy consumption of slurry pipeline transportation, reduce the risk of pipe blockage during slurry transportation, and improve the production efficiency of dredging operations.

[0032] 3. The device of the present invention is integrated into one unit, easy to install and disassemble, can be repeatedly used in different areas to be treated, and is simple to operate and safe to work. Attached Figure Description

[0033] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0034] Figure 1 This is a schematic diagram of the structure of a vortex flow equalization and drag reduction device for mud pipeline transportation in one embodiment of this application.

[0035] In the diagram: 1. Vortex flow equalization and drag reduction pipe section; 101. Guide vane; 21. First rotary connection flange; 22. Second rotary connection flange; 23. External gear flange; 4. Rotation system; 41. Rotary motor; 42. Coupling; 5. Controller; 504. Signal line. Detailed Implementation

[0036] The present application will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present application, but do not limit the present application in any way. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application. These all fall within the protection scope of the present application.

[0037] This invention provides a vortex flow equalization and drag reduction device for mud pipeline transportation. Based on the leading mechanism that the turbulent structure inside the pipe will collapse and develop into laminar flow after strong disturbance, the rotating system 4 is used to make the vortex flow equalization and drag reduction pipe section 1 rotate. Then, the flow is transmitted to the mud inside the pipe through the guide vanes 101 of the vortex flow equalization and drag reduction pipe section 1, inducing the laminar flow field of the mud inside the pipe. Through the flow equalization effect of high-speed rotation, the radial velocity gradient of the mud is rapidly and significantly reduced, thereby reducing the mud transportation resistance from the root and effectively reducing the resistance loss of mud transportation.

[0038] Reference Figure 1 As shown, a vortex flow equalization and drag reduction device for mud pipeline transportation according to an embodiment of this application includes: a vortex flow equalization and drag reduction pipe section 1, a first rotary connecting flange 21, a second rotary connecting flange 22, an external gear flange 23, a rotary system 4, and a controller 5.

[0039] The vortex flow equalization and drag reduction pipe section 1 is rotatably connected to the mud pipeline to reduce conveying resistance. One end of the first rotary connecting flange 21 is connected to the external gear flange 23 fixed on the mud pipeline, and the other end is connected to one end of the vortex flow equalization and drag reduction pipe section 1. One end of the second rotary connecting flange 22 is connected to the other end of the vortex flow equalization and drag reduction pipe section 1, and the other end is connected to the mud pipeline. The rotating system 4 is fixed to the vortex flow equalization and drag reduction pipe section 1 to provide power to the vortex flow equalization and drag reduction pipe section 1. The external gear flange 23 is fixed on the mud pipeline, connects the first rotary flange to the mud pipeline, and meshes with the coupling of the rotating system to transmit the power generated by the rotating system. The controller 5 is connected to the rotating system 4 to evaluate the drag reduction efficiency based on the conveying parameters of the mud in the pipe before and after drag reduction, and adjusts the operating parameters of the rotating system 4 in real time based on the evaluation results.

[0040] This application involves installing a vortex flow equalization and drag reduction device during the mud pipeline transportation process. The rotating system 4 causes the vortex flow equalization and drag reduction pipe section 1 to rotate, and the rotational power is transmitted to the mud inside the pipe, causing a change in the radial velocity distribution of the mud inside the pipe. This induces the homogenization of the mud flow field inside the pipe, thereby reducing the radial velocity gradient of the slurry inside the pipe and thus reducing the shear stress in the slurry, thereby achieving the effect of reducing the resistance of the mud pipeline transportation.

[0041] Specifically, during the mud pipeline transportation process, a rotatable vortex flow equalization and drag reduction pipe section 1 is first installed on the mud pipeline. The two ends of the vortex flow equalization and drag reduction pipe section 1 are respectively sealed to the mud pipeline through a first rotary connecting flange 21, a second rotary connecting flange 22, and an external gear flange 23, so that the vortex flow equalization and drag reduction pipe section 1 can rotate relative to the mud pipeline. A rotating system 4 is set up to provide a power source for the vortex flow equalization and drag reduction pipe section 1, and a controller 5 is set up to connect to the rotating system 4. The drag reduction efficiency is evaluated based on the mud transportation parameters in the pipe before and after drag reduction, and the operating parameters of the rotating system 4 are adjusted in real time based on the evaluation results. This solves the problem of high transportation resistance and high pumping energy loss of high-concentration mud in the pipeline, which can significantly reduce the energy consumption of mud pipeline transportation, reduce the risk of pipe blockage in mud transportation, and improve the production efficiency of dredging operations.

[0042] In some possible embodiments, the vortex flow equalization and drag reduction pipe section 1 further includes a guide vane 101 disposed inside the vortex flow equalization and drag reduction pipe section 1, which serves as a guide for transmitting the vortex flow equalization effect.

[0043] Specifically, one end of the vortex flow equalization and drag reduction pipe section 1 is connected to the mud pipe through the first rotary connecting flange 21 and the external gear flange 23, and the other end is connected to the mud pipe through the second rotary connecting flange 22. The rotation system 4 makes the vortex flow equalization and drag reduction pipe section 1 rotate stably at the optimal speed. The guide vane 101 is set inside the vortex flow equalization and drag reduction pipe section 1 and is used as a guide to transmit the vortex flow equalization effect. The rotation system 4 makes the vortex flow equalization and drag reduction pipe section 1 rotate, and then transmits it to the mud in the pipe through the guide vane 101 inside the vortex flow equalization and drag reduction pipe section 1, inducing the laminar fluidization of the mud flow field in the pipe. Through the flow equalization effect of high-speed rotation, the radial velocity gradient of the mud is reduced rapidly and significantly, reducing the mud transport resistance from the root, thereby effectively reducing the resistance loss of mud transport.

[0044] In some possible embodiments, the guide vanes 101 are multiple and are evenly spirally distributed on the inner wall of the vortex flow equalization pipe section.

[0045] Specifically, there are 12 guide vanes 101. The 12 guide vanes 101 are evenly spirally distributed on the inner wall of the vortex flow equalization and drag reduction pipe section 1. The pitch is 600mm, the vane height is 30mm, and the vane spacing is 50mm.

[0046] In some possible embodiments, the vortex flow equalization and drag reduction pipe section 1 and the guide vane 101 are printed as a single unit.

[0047] Among them, the vortex flow equalization and drag reduction pipe section 1 is a 3D printed pipe, which is directly integrated by a 3D printer. The vortex flow equalization and drag reduction pipe section 1 is used for the transportation of dredging mud from rivers, lakes and reservoirs. Due to its unique internal structure, the vortex flow equalization and drag reduction pipe section 1 is a DN300mm pipe section with a length of 600mm, which is directly integrated by a 3D printer.

[0048] In some possible embodiments, an external gear flange 23 is also included, which is disposed on the mud pipe and engages with the coupling 42 of the rotating system 4 to transmit the power generated by the rotating system.

[0049] Specifically, one end of the vortex flow equalization and drag reduction pipe section 1 is connected to the mud pipe via a first rotary connecting flange 21 and an external gear flange 23, and the other end is connected to the mud pipe via a second rotary connecting flange 22. The external gear flange 23 is fixed on the mud pipe, and the other end is connected to the first rotary flange 21. The rotary motor 41 is fixed on the vortex flow equalization and drag reduction pipe section 1, and the coupling 42 meshes with the external gear disk of the external gear flange 23 to ensure that the rotational power generated by the rotary system 4 is transmitted while the mud pipe is fixed, so that the vortex flow equalization and drag reduction pipe section 1 rotates stably. Multiple guide vanes 101 are spirally and evenly arranged on the inner wall of the vortex flow equalization and drag reduction pipe section 1 as guides for transmitting the vortex flow equalization effect. The controller 5 is connected to the rotary system 4. The controller 5 evaluates the drag reduction efficiency based on the mud conveying parameters in the pipe before and after drag reduction, and adjusts the operating parameters of the rotary system 4 in real time based on the drag reduction efficiency evaluation results.

[0050] In some possible embodiments, the rotating system 4 includes a rotating motor 41 and a coupling 42; the rotating motor 41 is connected to a controller 5 to generate rotational power and the controller 5 controls the rotational speed of the rotating motor 41; one end of the coupling 42 is connected to the rotating motor 41, and the other end meshes with the external gear disk of the external gear flange 23, for transmitting the rotational power generated by the rotating motor 41 directly to the vortex flow equalization and drag reduction pipe section 1.

[0051] Specifically, the external gear flange 23 is fixed to one end of the mud pipe. One end of the coupling 42 of the rotating system 4 is fixed to the shaft of the rotary motor 41, and the other end is gear-shaped, meshing with the external gear disk of the external gear flange 23. The rotary motor 41 is fixed to the vortex flow equalization and drag reduction pipe section 1. When the mud pipe is fixed, the external gear flange 23 remains stationary. The rotational power generated by the rotary motor 41 can be directly transmitted to the vortex flow equalization and drag reduction pipe section 1 through the gear, enabling the vortex flow equalization and drag reduction pipe section 1 to rotate stably.

[0052] In some possible embodiments, the first rotary connecting flange 21, the external gear flange 23, and the second rotary connecting flange 22 have the same diameter. The diameter of the vortex flow equalization and drag reduction pipe section 1 is the same as the diameter of the mud pipe.

[0053] Specifically, the vortex flow equalization and drag reduction pipe section 1 is directly integrated and printed by a 3D printer. The diameter of the vortex flow equalization and drag reduction pipe section 1 is determined according to the diameter of the mud conveying pipeline in the actual project. The first rotary connecting flange 21, the external gear flange 23, and the second rotary connecting flange 22 are matched with it and have the same diameter.

[0054] In the above embodiments, the magnitude of the conveying resistance before and after drag reduction is obtained through the real-time parameters of the transport pump. The rate of reduction of conveying resistance is related to the mud concentration, conveying speed, mud particle size, rotation speed of the vortex flow equalization drag reduction pipe section 1, number of guide vanes 101, height and pitch. Based on the vortex flow equalization drag reduction device in the embodiments of the present invention, a relationship between the rate of reduction of mud pipeline conveying resistance and the above parameters can be established under the action of the vortex flow equalization drag reduction device.

[0055] ;

[0056] In the formula, For drag reduction ratio, This represents the drag loss value before passing through the vortex flow equalizer. This represents the drag loss value after passing through the vortex flow equalizer. The rotational speed of the vortex flow equalizer. C v The mud concentration, d 50 Median particle size of sediment ，V Where D is the flow velocity and D is the inner diameter of the mud conveying pipeline.

[0057] For conveying mud within a certain particle size range, when the drag reduction rate is less than the preset drag reduction rate range, the controller 5 adjusts the operating power of the rotary motor 41 in real time based on the pre-established relationship (1) and the measured mud concentration, mud particle size, and flow rate, so that the rotary system 4 always operates at a speed that can achieve the preset drag reduction rate, so as to achieve the preset drag reduction effect.

[0058] In some possible embodiments, a signal line 504 is also included, disposed between the controller 5 and the rotation system 4, for communicating between the controller 5 and the rotation system 4.

[0059] Specifically, the controller 5 is connected to the rotary motor 41 via signal line 504. The controller 5 evaluates the drag reduction efficiency based on the conveying parameters of the mud in the pipe before and after drag reduction, and adjusts the operating parameters of the rotary system 4 in real time based on the drag reduction efficiency evaluation results. The controller 5 outputs commands to control the rotation speed of the rotary motor 41 via signal line 504.

[0060] In some possible embodiments, both the first rotary connecting flange 21 and the second rotary connecting flange 22 adopt 360° cast iron turntable flange hinges; the controller 5 adopts a high-precision rotary control and data acquisition system.

[0061] Specifically, the vortex flow equalization and drag reduction pipe section 1 is made of 3D printed pipe, the first rotary connecting flange 21 and the second rotary connecting flange 22 are both made of 360° cast iron turntable flanges, and the controller 5 is made of a high-precision rotary control and data acquisition system. Those skilled in the art will understand that in other embodiments, these components may also be implemented in other ways, as long as they achieve the functions corresponding to those in this invention.

[0062] The device in this embodiment is used for conveying dredged mud from rivers, lakes, and reservoirs. The vortex flow equalization and drag reduction pipe section 1, due to its unique internal structure, is a DN300mm, 600mm long pipe section directly integrated and printed by a 3D printer. The rotary motor 41 is a rotary motor with a speed of up to 20r / s. Twelve guide vanes 101 are evenly spirally distributed around the inner wall of the vortex flow equalization and drag reduction pipe section 1, with a pitch of 600mm, a vane height of 30mm, and a vane spacing of 50mm. The first rotary connecting flange 21 and the second rotary connecting flange 22 are both DN300mm 360° rotating cast iron turntable flanges with hinges. The external gear flange 23 is a DN300mm cast iron flange with an external gear that matches the pipe diameter. The controller 5 is a high-precision control and data acquisition system consisting of 16 input channels and 4 output channels.

[0063] In one embodiment of the above-mentioned device operation, the device is connected to the mud pipeline, and the rotation speed of the rotary motor 41 is adjusted to 13 r / s by the controller 5. The mud enters the vortex flow equalization and drag reduction pipe section 1 under the action of the external pipeline pump. Under the action of the guide vanes 101, the mud flow field is homogenized, the radial velocity gradient of the mud is reduced, thereby reducing the shear stress in the mud and the resistance of mud transportation is greatly reduced. The homogenized mud continues to flow forward. The above-mentioned measurement data before and after drag reduction are transmitted to the controller 5 according to the parameters of the external pipeline pump. The controller 5 adjusts the rotation speed of the rotary motor 41 in real time according to the drag reduction situation to maintain the optimal drag reduction efficiency in real time.

[0064] This invention is based on the principle that the turbulent structure inside the pipe will develop towards laminar flow after collapsing under strong disturbance. The rotating system 4 is used to make the vortex flow equalization and drag reduction pipe section 1 rotate, and then the flow is transmitted to the mud inside the pipe through the guide vanes 101 of the mud flow equalization and drag reduction pipe section, inducing the laminar flow field of the mud inside the pipe. Through the flow equalization effect of high speed rotation, the radial velocity gradient of the mud is reduced rapidly and significantly, thereby reducing the mud transport resistance from the root and effectively reducing the resistance loss of mud transport.

[0065] This invention uses a vortex flow equalization and drag reduction method to solve the problems of high transport resistance and high pumping energy loss of high-concentration mud in pipelines. It can significantly reduce the energy consumption of mud pipeline transportation, reduce the risk of pipe blockage during mud transportation, and improve the production efficiency of dredging operations. The device of this invention is integrated, easy to install and disassemble, can be repeatedly used in different areas to be treated, and is simple to operate and safe to work.

[0066] The specific embodiments of this application have been described above. It should be understood that this application is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the substantive content of this application. The above-described preferred features can be used in any combination without conflict.

Claims

1. A vortex flow equalization and drag reduction device for mud pipeline transportation, characterized in that, include: The vortex flow equalization and drag reduction pipe section is rotatably connected to the mud pipeline to reduce the conveying resistance; The first rotary connecting flange is connected at one end to the mud pipe and at the other end to one end of the vortex flow equalization and drag reduction pipe section. The second rotary connecting flange is connected at one end to the other end of the vortex flow equalization and drag reduction pipe section, and at the other end to the mud pipe. A rotating system, fixed to the vortex flow equalization and drag reduction pipe section, is used to provide power to the vortex flow equalization and drag reduction pipe section. An external gear flange is mounted on the mud pipe, connecting the first rotary connection flange to the mud pipe, and meshing with the coupling of the rotary system to transmit the power generated by the rotary system. The controller, connected to the rotating system, is used to evaluate the drag reduction efficiency based on the conveying parameters of the mud in the pipe before and after drag reduction, and to adjust the operating parameters of the rotating system in real time based on the evaluation results. The vortex flow equalization and drag reduction pipe section also includes guide vanes, which are disposed inside the vortex flow equalization and drag reduction pipe section and are used as guides to transmit the vortex flow equalization effect. The guide vanes are multiple and are evenly spirally distributed on the inner wall of the vortex flow equalization and drag reduction pipe section. The vortex flow equalization and drag reduction device is established under its action. The relationship between the mud pipeline transport resistance reduction rate and the following parameters is as follows: ； In the formula, For drag reduction ratio, This represents the drag loss value before passing through the vortex flow equalizer. This represents the drag loss value after passing through the vortex flow equalizer. The rotational speed of the vortex flow equalizer. C v The mud concentration, d 50 Median particle size of sediment ，V For the conveying flow rate, D This refers to the inner diameter of the mud transport pipeline.

2. The vortex flow equalization and drag reduction device for mud pipeline transportation according to claim 1, characterized in that, The number of guide vanes is 12.

3. The vortex flow equalization and drag reduction device for mud pipeline transportation according to claim 2, characterized in that, The vortex flow equalization and drag reduction pipe section and the guide vane are printed as a single unit.

4. The vortex flow equalization and drag reduction device for mud pipeline transportation according to claim 1, characterized in that, The rotating system includes: a rotary motor and a coupling; The rotary motor is connected to the controller to generate rotational power, and the controller controls the rotational speed of the rotary motor. One end of the coupling is connected to the rotary motor, and the other end meshes with the external gear flange, which is used to directly transmit the rotational power generated by the rotary motor to the vortex flow equalization and drag reduction pipe section.

5. The vortex flow equalization and drag reduction device for mud pipeline transportation according to claim 4, characterized in that, The first rotary connecting flange, the external gear flange, and the second rotary connecting flange have the same diameter. The diameter of the vortex flow equalization and drag reduction pipe section is the same as the diameter of the mud pipe.

6. The vortex flow equalization and drag reduction device for mud pipeline transportation according to claim 1, characterized in that, It also includes a signal line, which is disposed between the controller and the rotating system, for communicating between the controller and the rotating system.

7. The vortex flow equalization and drag reduction device for mud pipeline transportation according to claim 1, characterized in that, Both the first rotary connecting flange and the second rotary connecting flange adopt 360° cast iron turntable flange hinges; The controller employs a high-precision rotation control and data acquisition system.

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