Vortex flow-equalizing and resistance-reducing device for slurry pipeline transportation

Abstract

The invention provides a vortex flow-equalizing and resistance-reducing device for slurry pipeline conveying. According to the vortex flow-equalizing and resistance-reducing device, a vortex flow-equalizing and resistance-reducing pipe section is rotationally connected with a slurry pipeline; one end of the first rotary connecting flange is connected with a slurry pipeline, and the other end is connected with one end of the vortex flow-equalizing resistance-reducing pipe section; one end of the second rotary connecting flange is connected with the other end of the vortex flow-equalizing and resistance-reducing pipe section, and the other end is connected with a slurry pipeline; the rotating system is fixed with the vortex flow-equalizing and resistance-reducing pipe section; the external gear type flange plate is fixed on the slurry pipeline, is connected with the first rotating flange and the slurry pipeline, is meshed with a coupler of a rotating system and is used for transmitting power generated by the rotating system; the controller is connected with the rotating system and used for adjusting operation parameters of the rotating system. The vortex flow equalizing and resistance reducing mode is used, the problems that the conveying resistance of high-concentration slurry in a pipeline is large, and the pumping energy loss is high are solved, the energy consumption of slurry pipeline conveying and the pipe blocking risk of slurry conveying are reduced, and the production efficiency of dredging operation is improved.

Description

Technical Field

[0001] The present application relates to the technical field of water conservancy engineering, and in particular to a vortex flow-averaging drag-reducing device for mud pipeline transportation. Background Art

[0003] Pipeline transportation of high-concentration mud is a major mode of transportation of dredged materials in dredging projects. Looking at these dredging operations, more than 90% of large-scale dredging projects are excavated by cutter suction dredgers or trailing suction dredgers, and then the dredged mud is transported to the destination through pipelines. The mud pipeline transportation system is the main energy-consuming part of the dredger. Taking the cutter suction dredger as an example, when the mud needs to be transported over a long distance, the energy consumption of the mud pipeline transportation system can usually reach 80% of the total energy consumed by the entire cutter suction dredger, and the energy consumption of the mud pipeline transportation system of a large cutter suction dredger can reach more than 85% of the total energy consumption. During the mud transportation process, the silt particles gradually deposit to the bottom of the pipeline in layers due to their gravity, resulting in increased pipeline transportation resistance. In severe cases, it may even cause problems such as pipe blockage, forcing the dredger to stop working for cleaning, which seriously restricts the production efficiency of dredging. Therefore, it is a demand for the development of the dredging industry to propose corresponding mud pipeline transportation resistance reduction and efficiency enhancement methods to save its energy consumption and improve transportation efficiency, which has very important practical significance and market value.

[0004] There are two main technologies for reducing the drag of pipeline transportation. One is to mix other media into the pipeline to form a lubricating layer, and the other is to change the material of the pipe wall to reduce the roughness of the pipe wall, thereby reducing the pipeline transportation resistance. However, these methods are generally costly and have limited drag reduction effects. Existing technologies and products can reduce the transportation resistance by about 10%, which has basically reached the upper limit.

[0005] After searching the prior art literature, it was found that the Chinese patent application number is: CN202310047758.X, and the patent name is: A cross-array jet aerated mud conveying device, which includes: a liquid conveying system, a gas conveying system, which is used to form a gas-liquid mixture; a jet system, which includes a jet module, an injection module and a mud conveying module, wherein the jet module is connected to the end of the liquid conveying system through a pressurizing module to inject the gas-liquid mixture into the mud conveying module through the injection module; the jet module is provided with a plurality of diversion ring pipes, which are all connected to the pressurizing module through a diversion straight pipe, and each of the diversion ring pipes is provided with a plurality of outlets, and the outlets on adjacent diversion ring pipes are staggered; the device evenly exerts a drag reduction effect, reduces the friction between sediment particles and the pipe wall, reduces resistance loss, extends the service life of the pipeline, and avoids the problem of sediment siltation and blockage through jet impact, thereby ensuring long-distance pipeline transportation of mud. Its main shortcomings are: 1) the device involves multiple modules and components, which increases the complexity of system design and maintenance costs; 2) the use of jet impact to avoid siltation and blockage may cause a certain degree of disturbance to the surrounding environment, especially adverse effects on aquatic ecosystems; 3) in order to form a gas-liquid mixture and maintain jet impact, a considerable amount of gas and energy is required, which will lead to higher energy consumption and operating costs, and increase sludge transportation costs.

[0006] The Chinese patent application number is: CN201110084475, and the patent name is: A drag reduction method for excess sludge pipeline transportation. The patent uses powdered insoluble solid particles such as talcum powder or powdered boiler ash as drag reducers for sludge pipeline transportation, and adds them to the excess sludge to be transported to form a uniform mixture, so that the powdered particles contained in the drag reducer are mixed between the sludge solid particles, broadening the particle size distribution of the solid particles in the excess sludge, reducing the mutual collision and friction between the sludge particles, and increasing the thickness of the viscous bottom layer, thereby reducing the flow resistance of the excess sludge pipeline transportation process. Its main shortcomings are: 1) It only reduces the friction inside the sludge during the sludge transportation process, but does not reduce the resistance between the sludge and the sludge pipe, and the drag reduction effect is limited; 2) It is only applicable to 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 name is: A physical drag reduction device and method for oil and gas pipelines. The core technologies of this patent include injection holes and pressure-stabilizing chambers. The injection holes are arranged at intervals along the drag reduction pipe section, and the pressure-stabilizing chamber is located outside the drag reduction pipe section and connected to the injection holes. Through the drainage bypass, the fluid can be extracted from the main pipeline and then re-injected into the main pipeline through the pressure-stabilizing chamber, so that the turbulent flow is converted into laminar flow to reduce resistance. Its main shortcomings are: 1) The device actually converts turbulent flow into laminar flow, which may reduce the efficiency of fluid transportation, especially in the case of high flow and high pressure, and the economic benefits of drag reduction are limited; 2) The complexity of components such as the drainage bypass and the pressure-stabilizing chamber makes maintenance difficult, requiring regular inspection and maintenance, increasing operating costs and downtime.

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

[0009] In view of the defects in the prior art, the purpose of the present application is to provide a vortex flow-averaging drag-reducing device for mud pipeline transportation, comprising:

[0010] The vortex flow-averaging and drag-reducing pipe section is rotatably connected to the mud pipeline to reduce the transportation resistance;

[0011] A first rotating connecting flange, one end of which is connected to the mud pipeline, and the other end of which is connected to one end of the vortex flow-balancing and drag-reducing pipe section;

[0012] A second rotating connecting flange, one end of which is connected to the other end of the vortex flow-balancing drag-reducing pipe section, and the other end of which is connected to the mud pipeline;

[0013] A rotating system, fixed to the vortex flow-balancing drag-reducing pipe section, and used to provide power for the vortex flow-balancing drag-reducing pipe section;

[0014] The external gear type flange is fixed on the mud pipeline, connects the first rotating flange with the mud pipeline, and meshes with the coupling of the rotating system to transmit the power generated by the rotating system;

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

[0016] Furthermore, the vortex flow balancing and drag reduction pipe section also includes a guide vane, which is arranged inside the vortex flow balancing and drag reduction pipe section and is used as a guide for transmitting the vortex flow balancing effect.

[0017] Furthermore, the guide vanes are multiple and evenly distributed in a spiral pattern on the inner wall of the vortex flow-balancing and drag-reducing pipe section.

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

[0019] Furthermore, the vortex flow-balancing drag-reducing pipe section and the guide vane can be printed and formed in one piece.

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

[0021] Further, the rotating system comprises: a rotating motor and a coupling;

[0022] The rotating motor is connected to the controller to generate rotating power, and the rotating speed of the rotating motor is controlled by the controller;

[0023] One end of the coupling is connected to the rotating motor, and the other end is meshed with the external gear flange, so as to directly transmit the rotating power generated by the rotating motor to the vortex flow-balancing and drag-reducing pipe section.

[0024] Furthermore, the first rotating connection flange, the external gear type flange, and the second rotating connection flange have the same diameter;

[0025] The diameter of the vortex flow-averaging reduction pipe section is the same as the diameter of the mud pipeline.

[0026] Furthermore, it also includes a signal line, which is arranged between the controller and the rotating system and is used to connect the controller and the rotating system for communication.

[0027] Furthermore, the first rotating connection flange and the second rotating connection flange both adopt 360° cast iron turntable flange joints;

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

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

[0030] 1. The present invention is based on the frontier mechanism that the turbulent structure in the pipe will develop towards laminar flow after collapsing under strong disturbance. The rotating system is used to rotate the vortex equalizing flow and drag reduction pipe section. The rotating power is transmitted to the mud in the pipe through the guide vane, destroying the turbulent structure of the flow field in the pipe, inducing the uniformity of the mud flow field in the pipe, and making the outlet mud transportation develop towards laminar flow, so as to reduce the radial flow velocity gradient of the slurry in the pipe, thereby reducing the shear stress in the slurry, so as to achieve the effect of reducing the resistance of the mud pipeline transportation.

[0031] 2. The present invention uses a vortex flow-averaging drag reduction method, which innovatively starts from the perspective of reducing the radial flow velocity gradient of the transported mud. Through the flow-averaging effect of high-speed rotation, the transportation resistance of the mud is reduced from the root, and the problems of high transportation resistance and high pumping energy loss of high-concentration mud in the pipeline are solved. It 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.

[0032] 3. The device of the present invention is integrated, easy to install and disassemble, can be used repeatedly in different areas to be treated, is simple to operate, and is safe to operate. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0034] Figure 1 It is a schematic structural diagram of a vortex flow-averaging drag-reducing device for mud pipeline transportation in one embodiment of the present application.

[0035] In the figure: 1. vortex flow-balancing drag-reducing pipe section; 101. guide vane; 21. first rotating connection flange; 22. second rotating connection flange; 23. external gear flange; 4. rotating system; 41. rotating motor; 42. coupling; 5. controller; 504. signal line. DETAILED DESCRIPTION

[0036] The present application is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present application, but do not limit the present application in any form. It should be noted that, for those of ordinary skill in the art, several variations and improvements can also be made without departing from the concept of the present application. These all belong to the protection scope of the present application.

[0037] The present invention provides a vortex flow balancing and drag reduction device for mud pipeline transportation. Based on the frontier mechanism that the turbulent structure in the pipe will develop towards laminar flow after collapsing under the action of strong disturbance, the rotation system 4 is used to rotate the vortex flow balancing and drag reduction pipe section 1, and then the rotation is transmitted to the mud in the pipe through the guide blades 101 of the vortex flow balancing and drag reduction pipe section 1, thereby inducing laminar flow of the mud flow field in the pipe. Through the flow balancing effect of high-speed rotation, the radial flow velocity gradient of the mud is quickly and significantly reduced, thereby reducing the transportation resistance of the mud from the root, thereby effectively reducing the resistance loss of mud transportation.

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

[0039] The vortex flow balancing and drag reduction pipe section 1 is rotatably connected to the mud pipeline for reducing the conveying resistance; one end of the first rotating 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 balancing and drag reduction pipe section 1; one end of the second rotating connecting flange 22 is connected to the other end of the vortex flow balancing 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 balancing and drag reduction pipe section 1 for providing power for the vortex flow balancing and drag reduction pipe section 1; the external gear flange 23 is fixed on the mud pipeline, connecting the first rotating flange and the mud pipeline, and meshing with the coupling of the rotating system for transmitting the power generated by the rotating system; the controller 5 is connected to the rotating system 4 for evaluating the drag reduction efficiency according to the conveying parameters of the mud in the pipe before and after the drag reduction, and adjusting the operating parameters of the rotating system 4 in real time according to the evaluation results.

[0040] The present application sets a vortex flow balancing and drag reduction device during the mud pipeline transportation process, utilizes the rotation system 4 to rotate the vortex flow balancing and drag reduction pipe section 1, and transmits the rotational power to the mud in the pipe, so that the radial flow velocity distribution of the mud in the pipe changes, and induces the mud flow field in the pipe to be uniformized, so as to reduce the radial flow velocity gradient of the slurry in the pipe, thereby reducing the shear stress in the slurry, so as to achieve the effect of reducing the mud pipeline transportation resistance.

[0041] Specifically, during the mud pipeline transportation process, a rotatable vortex flow balancing and drag reduction pipe section 1 is firstly arranged on the mud pipeline, and the two ends of the vortex flow balancing and drag reduction pipe section 1 are sealed and connected to the mud pipeline through a first rotating connection flange 21, a second rotating connection flange 22, and an external gear flange 23, respectively, so that the vortex flow balancing and drag reduction pipe section 1 can rotate relative to the mud pipeline. A rotating system 4 is arranged to provide a power source for the vortex flow balancing and drag reduction pipe section 1, and a controller 5 is arranged to be connected to the rotating system 4. The drag reduction efficiency is evaluated according to the transportation parameters of the mud in the pipe before and after the drag reduction, and the operating parameters of the rotating system 4 are adjusted in real time according to the evaluation results, which solves the problems of high transportation resistance and high pumping energy loss of high-concentration mud in the pipeline, 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 balancing and drag reduction pipe section 1 further includes a guide vane 101, which is arranged inside the vortex flow balancing and drag reduction pipe section 1 and is used as a guide for transmitting the vortex flow balancing effect.

[0043] Specifically, one end of the vortex flow balancing and drag reduction pipe section 1 is connected to the mud pipeline through the first rotating connection flange 21 and the external gear flange 23, and the other end is connected to the mud pipeline through the second rotating connection flange 22. The rotating system 4 enables the vortex flow balancing and drag reduction pipe section 1 to rotate stably at an optimal speed; the guide vane 101 is arranged inside the vortex flow balancing and drag reduction pipe section 1, and is used as a guide for transmitting the vortex flow balancing effect; the vortex flow balancing and drag reduction pipe section 1 is rotated by the rotating system 4, and then transmitted to the mud in the pipe through the guide vane 101 inside the vortex flow balancing and drag reduction pipe section 1, inducing laminarization of the mud flow field in the pipe, and through the flow balancing effect of high-speed rotation, the radial flow velocity gradient of the mud is quickly and significantly reduced, thereby reducing the mud transportation resistance from the root, thereby effectively reducing the resistance loss of mud transportation.

[0044] In some possible embodiments, there are multiple guide vanes 101 that are evenly distributed in a spiral pattern on the inner wall of the vortex flow balancing pipe section.

[0045] Specifically, the number of the guide blades 101 is 12, and the 12 guide blades 101 are evenly distributed in a spiral on the inner wall of the vortex flow-balancing drag-reducing pipe section 1, with a pitch of 600 mm, a blade height of 30 mm, and a blade spacing of 50 mm.

[0046] In some possible embodiments, the vortex flow balancing and drag reduction pipe section 1 and the guide vane 101 can be printed and formed in one piece.

[0047] Among them, the vortex equalizing flow drag reduction pipe section 1 adopts a 3D printed tube, which is directly integrated and printed by a 3D printer. The vortex equalizing flow drag reduction pipe section 1 is used for dredging mud transportation in rivers, lakes and reservoirs. Due to its unique internal configuration, the vortex equalizing flow drag reduction pipe section 1 is a DN300mm, 600mm long pipe section directly integrated and printed by a 3D printer.

[0048] In some possible embodiments, an external gear-type flange 23 is further included, which is disposed on the mud pipeline and meshes 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-equalizing drag-reducing pipe section 1 is connected to the mud pipeline through the first rotating connection flange 21 and the external gear-type flange 23, and the other end is connected to the mud pipeline through the second rotating connection flange 22. The external gear-type flange 23 is fixed on the mud pipeline, and the other end is connected to the first rotating flange 21. The rotating motor 41 is fixed on the vortex flow-equalizing drag-reducing pipe section 1, and the coupling 42 is meshed with the external gear plate of the external gear-type flange 23 to ensure that the rotating power generated by the rotating system 4 is transmitted when the mud pipeline is fixed, so that the vortex flow-equalizing drag-reducing pipe section 1 rotates stably; multiple guide blades 101 are spirally and evenly arranged on the inner wall of the vortex flow-equalizing drag-reducing pipe section 1 as guides for transmitting the vortex flow-equalizing effect; the controller 5 is connected to the rotating system 4, and the controller 5 evaluates the drag reduction efficiency according to the transportation parameters of the mud in the pipe before and after the drag reduction, and adjusts the operating parameters of the rotating system 4 in real time according to the drag reduction efficiency evaluation result.

[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 the controller 5 for generating rotating power, and the speed of the rotating motor 41 is controlled by the controller 5; one end of the coupling 42 is connected to the rotating motor 41, and the other end is engaged with the external gear plate of the external gear flange 23, so as to directly transmit the rotating power generated by the rotating motor 41 to the vortex flow equalizing drag reduction pipe section 1.

[0051] Specifically, the external gear-type flange 23 is fixed to one end of the mud pipeline, one end of the coupling 42 of the rotating system 4 is fixed to the rotating shaft of the rotating motor 41, and the other end is gear-shaped and meshes with the external gear plate of the external gear-type flange 23, and the rotating motor 41 is fixed to the vortex flow-balancing drag-reducing pipe section 1. When the mud pipeline is fixed, the external gear-type flange 23 is fixed, and the rotational power generated by the rotating motor 41 can be directly transmitted to the vortex flow-balancing drag-reducing pipe section 1 through the gear, so that the vortex flow-balancing drag-reducing pipe section 1 can rotate stably.

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

[0053] Specifically, the vortex flow-balancing drag-reducing pipe section 1 is directly integrated and printed by a 3D printer. The diameter of the vortex flow-balancing drag-reducing pipe section 1 is determined according to the diameter of the mud conveying pipeline in the actual project. The first rotating connecting flange 21, the external gear flange 23, and the second rotating connecting flange 22 match each other and have the same diameter.

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

[0055]

[0056] In the formula, Δh f is the drag reduction rate, h f is the resistance loss before passing through the vortex equalizer, h′ f is the resistance loss value after passing through the vortex equalizer, ω is the rotation speed of the vortex equalizer, C v is the mud concentration, d 50 is the median particle size of the sediment, V is the conveying flow rate, and D is the inner diameter of the mud conveying pipeline.

[0057] For the transported 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 rotating 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 rotating system 4 always runs 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 further included, which is arranged between the controller 5 and the rotating system 4 and is used to establish a communication connection between the controller 5 and the rotating system 4 .

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

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

[0061] Specifically, the vortex flow-averaging drag-reducing pipe section 1 adopts a 3D printed pipe, the first rotating connection flange 21 and the second rotating connection flange 22 both adopt 360° cast iron turntable flange joints, and the controller 5 adopts a high-precision rotation control and data acquisition system. It can be understood by those skilled in the art that in some other embodiments, these components can also be implemented in other forms as long as the corresponding functions in the present invention can be achieved.

[0062] The device in this embodiment is used for conveying dredged mud in rivers, lakes and reservoirs. The vortex flow-balancing drag-reducing pipe section 1 has a unique internal configuration and is directly integrated and printed by a 3D printer to form a DN300mm and 600mm long pipe section; the rotating motor 41 adopts a rotating motor 41 with a rotation speed of up to 20r / s, and 12 guide blades 101 are evenly spirally distributed on the inner wall of the vortex flow-balancing drag-reducing pipe section 1, with a pitch of 600mm, a blade height of 30mm, and a blade spacing of 50mm; the first rotating connecting flange 21 and the second rotating connecting flange 22 both adopt DN300mm 360° rotating cast iron turntable flange joints; the external gear flange 23 adopts a cast iron flange with an external gear of DN300mm matching the pipe diameter; the controller 5 adopts a high-precision control and data acquisition system consisting of 16 input channels and 4 output channels.

[0063] When the above-mentioned device is in operation, one implementation method is: connect the above-mentioned device to the mud pipeline, adjust the rotation speed of the rotating motor 41 to 13r / s through the controller 5, and 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 vane 101, the mud flow field is homogenized, and the radial flow velocity gradient of the mud is reduced, thereby reducing the shear stress in the slurry, and the resistance to mud transportation is greatly reduced. The homogenized mud continues to flow forward, and the measurement data before and after the 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 rotating motor 41 in real time according to the drag reduction situation to maintain the optimal drag reduction efficiency in real time.

[0064] The present invention is based on the frontier mechanism that the turbulent structure in the pipe will develop towards laminar flow after collapsing under the action of strong disturbance. The rotation system 4 is used to make the vortex flow-equalizing drag reduction pipe section 1 rotate, and then the rotation is transmitted to the mud in the pipe through the guide vanes 101 of the mud flow-equalizing drag reduction pipe section, thereby inducing the laminar flow of the mud in the pipe. Through the flow-equalizing effect of high-speed rotation, the radial flow velocity gradient of the mud is quickly and significantly reduced, thereby reducing the mud transportation resistance from the root, thereby effectively reducing the resistance loss of mud transportation.

[0065] The present invention uses a vortex flow-averaging drag reduction method to solve the problems of high transport resistance and high pumping energy loss of high-concentration mud in pipelines, 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. The device of the present invention is integrated and easy to install and disassemble, can be used repeatedly in different areas to be treated, is simple to operate, and is safe to operate.

[0066] The above describes the specific embodiments of the present application. It should be understood that the present application is not limited to the above specific embodiments, and those skilled in the art can make various modifications or variations within the scope of the claims, which does not affect the substantive content of the present application. The above preferred features can be used in any combination without conflicting with each other.

Claims

1. A vortex flow-averaging drag-reducing device for mud pipeline transportation, characterized in that: include: The vortex flow-averaging and drag-reducing pipe section is rotatably connected to the mud pipeline to reduce the transportation resistance; A first rotating connecting flange, one end of which is connected to the mud pipeline, and the other end of which is connected to one end of the vortex flow-balancing and drag-reducing pipe section; A second rotating connecting flange, one end of which is connected to the other end of the vortex flow-balancing drag-reducing pipe section, and the other end of which is connected to the mud pipeline; A rotating system, fixed to the vortex flow-balancing drag-reducing pipe section, and used to provide power for the vortex flow-balancing drag-reducing pipe section; The external gear type flange is fixed on the mud pipeline, connects the first rotating flange with the mud pipeline, and meshes with the coupling of the rotating system to transmit the power generated by the rotating system; The controller is connected to the rotating system and is used to evaluate the drag reduction efficiency according to the conveying parameters of the mud in the pipe before and after the drag reduction, and to adjust the operating parameters of the rotating system in real time according to the evaluation results.

2. A vortex flow-averaging drag-reducing device for mud pipeline transportation according to claim 1, characterized in that: The vortex flow balancing and drag reduction pipe section also includes a guide vane, which is arranged inside the vortex flow balancing and drag reduction pipe section and is used as a guide for transmitting the vortex flow balancing effect.

3. The vortex flow-averaging drag-reducing device for mud pipeline transportation according to claim 2 is characterized in that: The guide blades are multiple and evenly distributed on the inner wall of the vortex flow-balancing and drag-reducing pipe section in a spiral manner.

4. A vortex flow-averaging drag-reducing device for mud pipeline transportation according to claim 3, characterized in that: The number of the guide blades is 12.

5. The vortex flow-averaging drag-reducing device for mud pipeline transportation according to claim 2, characterized in that: The vortex flow-balancing drag-reducing pipe section and the guide vane can be printed and formed in one piece.

6. The vortex flow-averaging drag-reducing device for mud pipeline transportation according to claim 1, characterized in that: It also includes an external gear-type flange, which is arranged on the mud pipeline and meshes with the rotating system to transmit the power generated by the rotating system.

7. A vortex flow-averaging drag-reducing device for mud pipeline transportation according to claim 6, characterized in that: The rotating system comprises: a rotating motor and a coupling; The rotating motor is connected to a controller for generating rotating power, and the controller controls the rotating speed of the rotating motor; One end of the coupling is connected to the rotating motor, and the other end is meshed with the external gear flange, so as to directly transmit the rotating power generated by the rotating motor to the vortex flow-balancing and drag-reducing pipe section.

8. The vortex flow-averaging drag-reducing device for mud pipeline transportation according to claim 7, characterized in that: The first rotating connection flange, the external gear type flange, and the second rotating connection flange have the same diameters; The diameter of the vortex flow-averaging reduction pipe section is the same as the diameter of the mud pipeline.

9. The vortex flow-averaging drag-reducing device for mud pipeline transportation according to claim 1, characterized in that: It also includes a signal line, which is arranged between the controller and the rotating system and is used to connect the controller and the rotating system for communication.

10. The vortex flow-averaging drag-reducing device for mud pipeline transportation according to claim 1, characterized in that: The first rotating connection flange and the second rotating connection flange both adopt 360° cast iron turntable flange joints; The controller adopts a high-precision rotation control and data acquisition system.

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