A three-dimensional flexible rectifier

Abstract

The present application relates to a three-dimensional flexible flow-rectifying device, comprising: a fixing mechanism comprising a water-permeable hollow skeleton, and the hollow skeleton is in the shape of a teardrop; a follower mechanism, the follower mechanism being connected to the end of the fixing mechanism, and the follower mechanism and the fixing mechanism are integrally formed into a long teardrop-shaped structure, the follower mechanism comprising a plurality of flexible wire bundles, the front ends of which are fixed to the hollow skeleton, and the ends of which are free ends. The plurality of flexible wire bundles of the follower mechanism twist with the flow in a turbulent field, and the shear dynamic stiffness of the flexible wire bundles provides a restraining reaction force and damping to dissipate pulsating energy, thereby breaking up vortices in different directions to achieve the purpose of flow rectification. This is different from a fixed curved plate guide plate flow-rectifying structure, is more efficient, and effectively ensures the fluid's passability and the stability of the flow field.

Description

Technical Field

[0001] The present application relates to the technical field of underwater fluid dynamics experiments, and in particular to a three-dimensional flexible rectifier. Background Art

[0002] Circulating water tunnels are common test platforms for ocean vehicles both domestically and internationally. Research on fluid dynamic acoustics relies on these systems worldwide. They are primarily used for testing propeller and structural models of ocean vehicles. They can measure propeller noise and dynamic forces in the flow field, as well as the hydrodynamic noise of the structure in the flow field. They are essential test equipment for studying the mechanisms of propeller and hydrodynamic noise in ocean vehicles.

[0003] A stable test section flow field during the operation of a circulating water tunnel is the foundation and prerequisite for conducting hydrodynamic tests. High-speed fluid flow in a circulating water tunnel creates a strong impact when passing through a bend, causing severe flow separation near the wall and generating vortices at the bend corner.

[0004] On the one hand, the formation of vortices can block upstream flow, occupying the original flow space and affecting the stable flow velocity characteristics. On the other hand, the continuous transmission of large-scale vortices downstream can cause significant flow unevenness and flow field instability in three-dimensional space. In addition, unstable operation characteristics can also cause strong vibration and noise.

[0005] The flow field of the fluid flowing through the circulating water tunnel test section must maintain high stability and extremely low turbulence, and the measurement of pressure pulsation and noise must also minimize environmental impact. Therefore, the vortex of flow instability caused by locations such as bends becomes a significant factor affecting the operation and testing of the entire circulating water tunnel.

[0006] In the related technology, the commonly used rectification method at home and abroad is to add arc-shaped guide plates at the corners of the curve (such as Figure 1 The goal is to improve flow field stability by using guide plates to separate the cavity and reduce turbulence. However, the unevenness and instability of the flow field are more pronounced in three dimensions. Two-dimensional guide plates are primarily arranged in concentric arcs along the radial direction of the pipe bend, providing a one-dimensional rectifying effect only in the radial direction of the bend and having no effect in other directions.

[0007] Existing circulating water tunnel straightening devices usually use arc-shaped curved plates as guide plates to suppress turbulence. The guide plates are welded and installed inside the water tunnel bend using multiple pieces arranged in parallel to reduce flow field instabilities such as flow separation caused by the bend.

[0008] This fixed bend lacks the ability to adjust to different operating conditions, and its ability to stabilize the flow field is limited under extreme conditions. Guide plates are installed radially parallel to the pipe bend, offering limited adjustment only in the radial direction. Rigid guide plates exhibit virtually no deformation and are unable to pulsate with the three-dimensional turbulent flow field, dissipating vortex energy.

[0009] Furthermore, most deflectors are fixed and cannot be adjusted to accommodate varying flow rates. This limits their ability to regulate the flow field, and their flow straightening capabilities have reached a bottleneck. More importantly, rigid deflectors cannot adapt to the flow field, preventing them from utilizing the reaction force provided by their dynamic stiffness and the energy dissipation provided by damping to suppress turbulence.

[0010] Although simulation calculations of two-dimensional flexible guide plates have been conducted in other pipeline studies, there is no rectification structure that can efficiently rectify the flow as the operating conditions of the water tunnel change, while effectively reducing the non-uniformity of the three-dimensional flow field. Summary of the Invention

[0011] An embodiment of the present application provides a three-dimensional flexible rectifying device to solve the problem in related technologies that a rigid guide plate cannot move with the flow field and cannot utilize the reaction force provided by the dynamic stiffness of the guide plate and the energy dissipation provided by the damping to suppress turbulence.

[0012] A first aspect of an embodiment of the present application provides a three-dimensional flexible rectifying device, comprising:

[0013] A fixing mechanism, the fixing mechanism comprising a water-permeable hollow frame, and the hollow frame has a teardrop-shaped structure;

[0014] A follower mechanism, the follower mechanism being connected to the end of the fixing mechanism, and the follower mechanism and the fixing mechanism being in a long teardrop-shaped structure as a whole;

[0015] The follow-up mechanism includes a plurality of flexible wire harnesses, the front ends of the flexible wire harnesses are fixed on the hollow frame, and the ends of the flexible wire harnesses are free ends.

[0016] In some embodiments: the hollow skeleton includes a plurality of coaxially arranged rigid rings with gradually increasing diameters, and two adjacent rigid rings are spaced apart and connected to each other by a plurality of rigid longitudinal ribs.

[0017] In some embodiments: the fixing mechanism further includes a plurality of hooks connected to the hollow skeleton to fix the hollow skeleton in the curved waterway.

[0018] In some embodiments, the plurality of flexible wire harnesses are distributed on the hollow skeleton from inside to outside, and the length of the flexible wire harnesses located inside the hollow skeleton is greater than the length of the flexible wire harnesses located outside the hollow skeleton.

[0019] In some embodiments: the cross-section of the flexible harness is a circular structure, the front end of the flexible harness is a teardrop shape, and the end of the flexible harness is a cone shape.

[0020] In some embodiments, the flexible harness is a cylindrical shell structure with closed ends and a hollow middle, and the gravity of the flexible harness is equal to the buoyancy of the flexible harness in the liquid.

[0021] In some embodiments, the flexible harness is made of a multi-layer composite polymer material or a polymer material with embedded steel mesh.

[0022] A second aspect of the embodiments of the present application provides a circulating water tunnel, comprising:

[0023] A circulating water channel, wherein the circulating water channel comprises a plurality of straight test water channels and a plurality of curved water channels, wherein the plurality of straight test water channels and the plurality of curved water channels are connected end to end to form an annular channel;

[0024] Each of the curved water channels is provided with a three-dimensional flexible rectifying device as described in any of the above embodiments.

[0025] In some embodiments, the inner diameter of the curved waterway is D, and the fixing mechanism of the three-dimensional flexible rectifying device is fixed upstream of the curved waterway and at a distance of 1D-2D from the curved position of the curved waterway;

[0026] The fixing mechanism is coaxially fixed in the curved water channel, and the ratio of the outer diameter of the fixing mechanism to the inner diameter of the curved water channel is 1 / 3-1 / 2.

[0027] In some embodiments: the inner diameter of the curved water channel is D, and the ratio of the length of the flexible wire harness of the three-dimensional flexible fairing device to the inner diameter of the curved water channel is 7-10;

[0028] The end of the flexible harness is located downstream of the curved waterway and is 5D-9D away from the curved position of the curved waterway.

[0029] The beneficial effects of the technical solution provided by this application include:

[0030] The present invention provides a three-dimensional flexible rectifying device for a circulating water tunnel. The device comprises a fixing mechanism comprising a water-permeable hollow skeleton with a teardrop-shaped structure whose cross-sectional dimensions gradually increase from the upstream side to the downstream side; and a follower mechanism comprising a plurality of flexible wire harnesses, the front ends of which are fixed to the hollow skeleton and the rear ends of which are free. The follower mechanism is connected to a circulating water tunnel requiring rectification via the fixing mechanism, rectifying the turbulent flow generated within the tunnel and reducing flow field instability and unevenness.

[0031] Therefore, the three-dimensional flexible flow-rectifying device for a circulating water tunnel disclosed in this application is comprised of a fixed mechanism and a follower mechanism. The fixed mechanism comprises a water-permeable hollow skeleton, with a teardrop-shaped structure whose cross-sectional dimensions gradually increase from the upstream side to the downstream side. The skeleton's streamlined upstream side and overall hollow structure significantly reduce the obstruction caused by the flow-rectifying device. The hollow skeleton facilitates the placement of the follower mechanism's flexible wiring harnesses within the curved waterway without disrupting the normal flow of water.

[0032] The flexible wire bundles of the follower mechanism twist with the flow in the turbulent field, and the shear dynamic stiffness of the flexible wire bundles provides a restraining reaction force and damping to dissipate the pulsating energy, thereby breaking up the vortices in different directions to achieve the purpose of rectification. This is different from the fixed curved plate type guide plate rectification structure and is more efficient. Compared with the fixed curved plate type guide plate, the rectification device of the present application is more adaptable, and the flexible wire bundles have a three-dimensional adjustment function, which can effectively improve the rectification efficiency. The present application has a low blocking effect on the flow field. The rectification device of the present application has a simple structure, and the frontal surface adopts a streamlined structure, which effectively guarantees the passability of the fluid and the stability of the flow field. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0034] Figure 1 Schematic diagram of the arrangement of arc-shaped guide plates in a circulating water tunnel in the background technology;

[0035] Figure 2 This is a schematic structural diagram of a three-dimensional flexible rectifying device according to an embodiment of the present application;

[0036] Figure 3 This is a structural stereogram of the hollow skeleton of an embodiment of the present application;

[0037] Figure 4This is a structural front view of the hollow skeleton of an embodiment of the present application;

[0038] Figure 5 A top view of the structure of the hollow skeleton according to an embodiment of the present application;

[0039] Figure 6 This is a structural stereogram of a flexible wiring harness according to an embodiment of the present application;

[0040] Figure 7 This is a schematic diagram of the arrangement of a three-dimensional flexible rectifying device in a curved waterway according to an embodiment of the present application;

[0041] Figure 8 This is a schematic diagram of the connection of the hollow skeleton in a curved waterway according to an embodiment of the present application.

[0042] Reference numerals:

[0043] 1. Hollow frame; 2. Flexible wire harness; 3. Hook; 4. Curved waterway; 11. Rigid ring; 12. Rigid longitudinal reinforcement. DETAILED DESCRIPTION

[0044] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0045] The embodiment of the present application provides a three-dimensional flexible rectifying device, which can solve the problem in the related art that the rigid guide plate cannot move in the flow field and cannot use the reaction force provided by the dynamic stiffness of the guide plate and the energy dissipation provided by the damping to suppress turbulence.

[0046] See also Figure 2 As shown, the first aspect of the embodiment of the present application provides a three-dimensional flexible rectifying device, comprising:

[0047] The fixing mechanism comprises a water-permeable hollow frame 1, with a teardrop-shaped cross-section that gradually increases in size from the upstream side to the downstream side. The streamlined upstream side of the hollow frame 1, with its overall hollow structure, significantly reduces the obstruction caused by the rectifying device. The hollow frame 1 facilitates the placement of the flexible wire harnesses 2 of the follower mechanism within the curved waterway 4 without affecting the normal flow of water.

[0048] The follower mechanism is connected to the end of the fixed mechanism, and the follower mechanism and the fixed mechanism form a long teardrop-shaped structure, effectively reducing the flow resistance of the rectifier. The follower mechanism includes several flexible wire harnesses 2, the front ends of which are fixed to the hollow frame 1 and the ends of which are free ends. The flexible wire harnesses 2 twist with the flow in the turbulent field, and the shear dynamic stiffness of the flexible wire harnesses 2 provides a restraining reaction force and damping to dissipate pulsating energy, thereby breaking up vortices in different directions to achieve the purpose of rectification. This is different from the fixed curved plate guide plate rectification structure and is more efficient.

[0049] The three-dimensional flexible flow-rectifying device for a circulating water tunnel in the present embodiment consists of a fixed mechanism and a follower mechanism. The fixed mechanism comprises a water-permeable hollow skeleton 1, whose cross-sectional dimensions gradually increase from the upstream side to the downstream side. The streamlined upstream side of the skeleton 1 is an overall hollow structure, significantly reducing the obstruction caused by the flow-rectifying device. The skeleton 1 facilitates the placement of the follower mechanism's flexible wire harnesses 2 within a curved waterway 4 without disrupting the normal flow of water.

[0050] The flexible wire harnesses 2 of the follower mechanism twist with the flow in the turbulent field, and the shear dynamic stiffness of the flexible wire harnesses 2 provides a restraining reaction force and damping to dissipate the pulsating energy, thereby breaking up the vortices in different directions to achieve the purpose of rectification. This is different from the fixed curved plate type guide plate rectification structure and is more efficient. Compared with the fixed curved plate type guide plate, the rectification device of the present application is more adaptable, and the flexible wire harnesses 2 have a three-dimensional adjustment function, which can effectively improve the rectification efficiency. The present application has a low blocking effect on the flow field. The rectification device of the present application has a simple structure, and the frontal surface adopts a streamlined structure, which effectively guarantees the fluid passability and the stability of the flow field.

[0051] The three-dimensional flexible rectification device for a circulating water tunnel in the embodiment of the present application adopts a flexible harness 2 for rectification. By selecting the shear stiffness of the flexible harness 2, the flexible harness 2 can not only deform with the velocity distribution and pressure distribution of the flow field (the shear stiffness cannot be too large), but also provide a deformation reaction force to counteract the unevenness of the fluid pressure (the shear stiffness cannot be too small). At the same time, the flexible harness 2 damps and consumes the pressure pulsation energy transmitted by the flow field, so that the velocity and pressure distribution in the flow field tend to be uniform, thereby realizing the three-dimensional rectification of the water tunnel bend flow field.

[0052] In some optional embodiments: see 2 to Figure 4 As shown, an embodiment of the present application provides a three-dimensional flexible rectifier device, wherein the hollow skeleton 1 of the three-dimensional flexible rectifier device includes a plurality of rigid circular rings 11 coaxially arranged and with gradually increasing diameters, and two adjacent rigid circular rings 11 are spaced apart and connected to each other by a plurality of rigid longitudinal ribs 12.

[0053] Multiple rigid circular rings 11 and multiple rigid longitudinal ribs 12 are interconnected to form a hollow, meshed, teardrop-shaped structure. The hollow skeleton 1 provides flow diversion and water permeability, reducing resistance to water flow. The securing mechanism also includes four hooks 3 connected to the hollow skeleton 1 to secure it within the curved waterway 4. The hollow skeleton 1 faces the incoming flow, with the flexible wiring harness 2 floating downstream. The hooks 3 remain locked during water circulation. When the rectifier needs to be replaced after drainage, the locks on the hooks 3 are unlocked to facilitate removal, replacement, or adjustment of the rectifier.

[0054] In some optional embodiments: see 2 to Figure 6 As shown, an embodiment of the present application provides a three-dimensional flexible rectifier device, in which multiple flexible wire harnesses 2 are distributed in sequence from the inside to the outside on the hollow skeleton 1, and the length of the flexible wire harness 2 located on the inside of the hollow skeleton 1 is greater than the length of the flexible wire harness 2 located on the outside of the hollow skeleton 1.

[0055] Flexible harness 2 has a circular cross-section, a teardrop-shaped front end, and a conical end. It is a cylindrical shell structure with closed ends and a hollow center. The weight of flexible harness 2 is equal to the buoyancy of flexible harness 2 in the liquid. Flexible harness 2 is made of a multi-layer composite polymer material or a polymer material with embedded steel mesh.

[0056] Each flexible wire harness 2 is a hollow shell. The design of the cross-sectional diameter of the internal cavity of the flexible wire harness 2 makes the buoyancy of the flexible wire harness 2 in water equal to its weight, thereby ensuring that the flexible wire harness 2 floats in a horizontal straight line in still water and a uniform flow field. The entire follower mechanism is also in a horizontal straight line shape, preventing the flexible wire harness 2 from sinking or floating and increasing the flow resistance.

[0057] Each flexible harness 2 is evenly distributed on the hollow frame 1. The central main body cross-section of the flexible harness 2 is a hollow cylinder. The front end (front end) of the flexible harness 2 is streamlined—a teardrop shape—and the tail is conical. This combination minimizes the flow resistance of each flexible harness 2. Furthermore, the multiple flexible harnesses 2 are distributed on the hollow frame 1 in a pattern of being longer in the middle and shorter around the perimeter. This gives the entire follower mechanism the same teardrop-shaped shape as each flexible harness 2: a cylindrical center and a conical tail, further reducing the flow resistance of the entire harness.

[0058] Each flexible harness 2 is a hollow shell. The diameter of its main body—the central cylindrical shell—is (T+2d), where d is the shell thickness and T is the diameter of the hollow cavity. T is designed according to the following formula to equalize gravity and buoyancy, ensuring that the flexible harness 2 maintains a horizontal, straight line in still water and a uniform flow field, preventing the flexible harness 2 from falling and increasing flow resistance.

[0059]

[0060] Where ρ1 is the shell material density of flexible harness 2, and ρ2 is the water density (ρ1>ρ2). Flexible harness 2 can be made of a composite material, such as a multilayer composite polymer or a polymer material embedded with steel mesh, to optimize the bending stiffness of flexible harness 2, increase damping, and improve rectification efficiency. In this case, ρ1 is the equivalent density.

[0061] The entire follower mechanism and each flexible harness 2 therein twist and deform in the flow field as the incoming flow velocity and pressure change, reducing the flow field non-uniformity and instability from all directions, breaking up the vortex structures in different directions, reducing the unsteady characteristics of the flow field, consuming the original three-dimensionally distributed vortex energy, and prompting the water flow to reduce turbulence as quickly as possible at the bend position and flow smoothly and evenly along the flow direction.

[0062] See also Figure 7 and Figure 8 As shown in the figure, the second aspect of the embodiment of the present application provides a circulating water tunnel, including:

[0063] The circulating waterway comprises a plurality of linear test waterways and a plurality of curved waterways 4, which are connected end-to-end to form a circular channel. Each curved waterway 4 is provided with a three-dimensional flexible flow straightening device as described in any of the above embodiments. The curved waterway 4 has an inner diameter D, and the fixing mechanism of the three-dimensional flexible flow straightening device is fixed upstream of the curved waterway 4 at a distance of 1D-2D from the bend of the curved waterway 4.

[0064] The fixing mechanism is coaxially fixed within the curved waterway 4. The ratio of the outer diameter of the fixing mechanism's hollow frame 1 to the inner diameter of the curved waterway 4 is 1 / 3-1 / 2. The inner diameter of the curved waterway 4 is D. The ratio of the length of the flexible harness 2 of the three-dimensional flexible rectifier to the inner diameter of the curved waterway 4 is 7-10. The end of the flexible harness 2 is located downstream of the curved waterway 4 and is 5D-9D away from the bend of the curved waterway 4.

[0065] This application comprehensively considers the internal structural characteristics of the circulating water tunnel and the influence of the curved waterway 4 on the flow field. This led to the adoption of a rectifier that combines a fixed mechanism with a follower mechanism. The number and length of the flexible harnesses 2 of the follower mechanism are adjustable. Compared to conventional guide plates, the rectifier in this application primarily adjusts unstable incoming flow through a follower mechanism that moves with the flow field.

[0066] The follower mechanism can enter the vortex structure generated upstream of the curved waterway 4, fundamentally breaking up the large-scale unstable flow characteristics. The refined small-scale vortex structure moves with the flexible wire bundle 2, and its energy is further consumed through the swing of the flexible wire bundle 2, thereby gradually forming a smoother uniform flow along the flow direction.

[0067] Flow separation at the four corners of the curved water channel during water circulation in the circulating water tunnel can have a significant negative impact on the turbulence and flow field stability required in the linear test channel. On the one hand, the unstable flow field structure significantly affects the measurement of parameters such as pressure, velocity, and noise in the linear test channel, resulting in less reliable test results. On the other hand, the flow characteristics caused by the corners of the circulating water tunnel vary under different operating conditions, and the different incoming flow characteristics also cause different non-uniform characteristics downstream.

[0068] The rectifying device used in this application completely breaks up and consumes the turbulent instability characteristics in the flow field in three dimensions, thereby improving the uniformity of the flow field and reducing the turbulence, which can ensure the implementation of the hydrodynamic test of the circulating water tunnel. The rectifying device adopts a combination of a hollow skeleton 1 of a metal structure and a flexible harness 2 of a composite material, which is also conducive to reducing the weight of the structure, ensuring the flexibility of the follower mechanism, and reducing the flow field resistance. In addition, the entire rectifying device and the frontal surface of the flexible harness 2 therein adopt a streamlined design, which is more conducive to reducing the resistance caused by the impact of the incoming flow, thereby further reducing the flow resistance.

[0069] In summary, the rectifier and circulating water tunnel are easy to process, easy to install and position, and have a wide range of adaptability. They can be designed specifically for the specific operating conditions of the circulating water tunnel to reduce flow field instability, improve flow field uniformity, and reduce turbulence, thereby providing a highly uniform flow field for the test section.

[0070] How it works

[0071] The present invention provides a three-dimensional flexible rectifying device for a circulating water tunnel. The device comprises a fixing mechanism comprising a water-permeable hollow skeleton 1, a teardrop-shaped structure with a cross-sectional dimension gradually increasing from the upstream side to the downstream side; and a follower mechanism comprising a plurality of flexible wire harnesses 2, the front ends of which are fixed to the hollow skeleton 1 and the rear ends of which are free. The follower mechanism is connected to a circulating water tunnel requiring rectification via the fixing mechanism, rectifying the turbulent flow generated within the tunnel and reducing flow field instability and unevenness.

[0072] Therefore, the three-dimensional flexible flow-rectifying device for a circulating water tunnel disclosed in this application is comprised of a fixed mechanism and a follower mechanism. The fixed mechanism comprises a water-permeable hollow skeleton 1, with a teardrop-shaped structure whose cross-sectional dimensions gradually increase from the upstream side to the downstream side. The streamlined upstream side of the hollow skeleton 1, with its overall hollow structure, significantly reduces the obstruction caused by the flow-rectifying device. Without affecting the normal flow of water, the hollow skeleton 1 facilitates the placement of the follower mechanism's multiple flexible wire harnesses 2 within the curved waterway 4.

[0073] The flexible wire harnesses 2 of the follower mechanism twist with the flow in the turbulent field, and the shear dynamic stiffness of the flexible wire harnesses 2 provides a restraining reaction force and damping to dissipate the pulsating energy, thereby breaking up the vortices in different directions to achieve the purpose of rectification. This is different from the fixed curved plate type guide plate rectification structure and is more efficient. Compared with the fixed curved plate type guide plate, the rectification device of the present application is more adaptable, and the flexible wire harnesses 2 have a three-dimensional adjustment function, which can effectively improve the rectification efficiency. The present application has a low blocking effect on the flow field. The rectification device of the present application has a simple structure, and the frontal surface adopts a streamlined structure, which effectively guarantees the fluid passability and the stability of the flow field.

[0074] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0075] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0076] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A three-dimensional flexible rectifier, characterized in that: include: A fixing mechanism, the fixing mechanism comprising a water-permeable hollow frame (1), wherein the hollow frame (1) is in a water drop-shaped structure; A follower mechanism, the follower mechanism being connected to the end of the fixing mechanism, and the follower mechanism and the fixing mechanism being in a long teardrop-shaped structure as a whole; The follower mechanism comprises a plurality of flexible wire harnesses (2), the front ends of the flexible wire harnesses (2) are fixed on the hollow frame (1), and the ends of the flexible wire harnesses (2) are free ends.

2. A three-dimensional flexible rectifying device according to claim 1, characterized in that: The hollow skeleton (1) comprises a plurality of coaxially arranged rigid rings (11) with gradually increasing diameters, and two adjacent rigid rings (11) are spaced apart and connected to each other via a plurality of rigid longitudinal ribs (12).

3. A three-dimensional flexible rectifying device according to claim 1 or 2, characterized in that: The fixing mechanism further comprises a plurality of hooks (3) connected to the hollow frame (1) to fix the hollow frame (1) in the curved waterway (4).

4. The three-dimensional flexible rectifying device according to claim 1, characterized in that: The plurality of flexible wire harnesses (2) are sequentially distributed on the hollow frame (1) from the inside to the outside, and the length of the flexible wire harnesses (2) located inside the hollow frame (1) is greater than the length of the flexible wire harnesses (2) located outside the hollow frame (1).

5. A three-dimensional flexible rectifying device according to claim 1 or 4, characterized in that: The cross section of the flexible wire harness (2) is a circular structure, the front end of the flexible wire harness (2) is in a teardrop shape, and the end of the flexible wire harness (2) is in a cone shape.

6. A three-dimensional flexible rectifying device according to claim 1 or 4, characterized in that: The flexible wire harness (2) is a cylindrical shell structure with closed ends and a hollow middle. The gravity of the flexible wire harness (2) is equal to the buoyancy of the flexible wire harness (2) in the liquid.

7. A three-dimensional flexible rectifying device according to claim 1 or 4, characterized in that: The flexible wire harness (2) is made of a multi-layer composite polymer material or a polymer material with embedded steel mesh.

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