A variable specification production device for vortex-induced vibration suppression structure

Abstract

The present invention discloses a variable-specification production device for a vortex-induced vibration suppression structure, comprising a fixed forming assembly, a rotary forming assembly, and a rotary transmission assembly. The rotary forming assembly is fixed within the rotary transmission assembly and is rotationally connected to the fixed forming assembly. A stripe forming block is fixed to the side of the rotary forming assembly away from the fixed forming assembly. The stripe forming block includes two stripe sub-blocks, which are relatively spaced apart. The angle between the two stripe sub-blocks is adjustable, and the spacing between the two stripe sub-blocks and the central extrusion hole of the fixed forming assembly is adjustable. The present invention can flexibly adjust the specifications of the spiral stripes (such as spacing, height, and width), while also having the function of automatically cleaning the stacked material, effectively ensuring the appearance quality and vibration suppression effect of the cable, and can efficiently handle shredded and dropped materials, thereby improving the overall efficiency and quality of production.

Description

Technical Field

[0001] The present invention relates to the technical field of communications, and in particular to a variable specification production device for a vortex-induced vibration suppression structure. Background Art

[0002] In the field of deep-sea oil and gas development and exploration, slender flexible risers are needed as "umbilical cords" to connect the sea surface and submarine facilities. The cost of the "umbilical cord" often exceeds 50% of the entire system, and it must be extremely reliable. Failure will have very serious consequences.

[0003] like Figure 15 As shown in the figure, when the ocean current and the underwater pipeline move relative to each other, alternating vortex shedding occurs on both sides of the pipeline, creating a periodic pulsating force on the structure's surface. Especially in the lateral direction perpendicular to the water flow, the periodic lift vibrations induced by vortex shedding are large in amplitude, easily leading to vortex-induced vibrations. If the vortex shedding frequency approaches the natural frequency of the cable, synchronization or locking will occur, significantly increasing the vibration. Vortex-induced vibration is a major cause of structural instability and fatigue failure in deep-sea risers and connecting "umbilicals."

[0004] In order to solve this problem, various research institutes, universities and enterprises have proposed various solutions. The principle is to add new structures to the cables to change the law of vortex-induced shedding and keep the cables stable. Common passive vortex-induced vibration suppression structures include Figure 16 As shown:

[0005] The present invention is a continuous processing and production device designed for structure a: spiral stripe structure.

[0006] Typically, there are three approaches to achieving a spiral stripe structure: 1. Injection molding, a segmented process; this provides high consistency but low production efficiency; 2. Prefabricated ribbed spiral strakes for two-in-one mounting; this results in an asymmetrical structure, limited vibration damping, and the ability to easily fall apart over time; 3. Polysulfide adhesive vulcanization and potting; this requires rigorous procedures, including adhesive preparation, blistering, and injection, and is prone to defective products. Polysulfide adhesive takes 1-5 hours to cure, resulting in lower production efficiency than injection molding, and is therefore generally not used. Summary of the Invention

[0007] In order to solve the problems mentioned in the above background technology, the present invention provides a variable specification production device for a vortex-induced vibration suppression structure.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A variable specification production device for a vortex-induced vibration suppression structure includes a fixed forming component, a rotary forming component, and a rotary transmission component. The rotary forming component is fixed inside the rotary transmission component, and the rotary forming component is rotatably connected to the fixed forming component.

[0010] A stripe forming block is fixed on one side of the rotary forming assembly away from the fixed forming assembly. The stripe forming block includes two stripe sub-blocks. The stripe sub-blocks are offset from each other, the angle between the two stripe sub-blocks is adjustable, and the distance between the two stripe sub-blocks and the middle extrusion hole of the fixed forming assembly is adjustable.

[0011] Preferably, a mounting groove is provided on the side of the rotary molding component away from the fixed molding component, a support block is fixed in the mounting groove, an adjusting rod is movably installed on the support block, an arc-shaped mounting strip is fixed at one end of the adjusting rod close to the middle extrusion hole, an arc-shaped mounting strip is provided on the arc-shaped mounting strip, and both striped sub-blocks are bolted to the arc-shaped mounting strip by rivets passing through the arc-shaped mounting opening.

[0012] Preferably, an adjusting screw is fixed to one end of the adjusting rod away from the arc-shaped mounting bar, a telescopic spring is sleeved on the outer side of the adjusting screw, and an adjusting nut is installed on the top end of the adjusting screw.

[0013] Preferably, a plurality of shearing assemblies are rotatably mounted on a side of the striped sub-block away from the rotary forming assembly near a mutually intersecting position, for shearing the accumulated materials generated during use.

[0014] Preferably, the shearing assembly comprises a rotating column, a shearing blade is fixed to the outside of the rotating column, and the shearing blades on the outside of adjacent rotating columns are staggered.

[0015] Preferably, a magnetic plug-in sleeve is rotatably mounted on the striped sub-block, the magnetic inner hexagonal plug-in sleeve is at the same height as the surface of the striped sub-block, a magnetic hexagonal pin is fixed on the rotating column, and the magnetic hexagonal pin matches the magnetic inner hexagonal plug-in sleeve.

[0016] Preferably, an installation cavity is provided inside the striped sub-block, the bottom end of the magnetic hexagonal socket extends into the installation cavity and is fixed with a first sprocket, a first gear is rotatably installed on the striped sub-block, the supporting shaft of the first gear extends into the installation cavity and is fixed with a second sprocket, and the outer sides of the first sprocket and the second sprocket are synchronously driven by a chain.

[0017] Preferably, a synchronous gear ring is rotatably mounted on a side of the rotary molding assembly away from the fixed molding assembly, and the plurality of first gears are all meshed with the synchronous gear ring.

[0018] Preferably, a power input shaft is rotatably mounted on the rotary transmission assembly, one end of the power input shaft extends to the interior of the rotary transmission assembly and is fixed with a second gear, the second gear is engaged with the synchronous gear ring, and the other end of the power input shaft extends to the outside of the rotary transmission assembly and is fixed with a power connection assembly.

[0019] Preferably, a suction port is provided on a side of the rotary transmission component away from the fixed forming component, and the suction port is provided with an external thread for connecting to a dust extraction pipe.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention extrudes the spiral stripes simultaneously with the sheath, achieving the basic requirements of continuity, high efficiency, and integration without shedding. The consistency of the spiral stripes is very high, and the production efficiency can reach at least 5 meters / minute, which is about 600 times higher. At the same time, the number of spiral stripes and the distance between spirals can be adjusted.

[0022] And it can realize three major adjustment functions of spiral stripes: height, width and number:

[0023] 1. Heightening: This means changing the height of the spiral stripes. The rotary molding area is equipped with an adjusting screw. After the entire assembly is completed, the compression of the telescopic spring can be changed by turning the adjusting nut, thereby changing the upper and lower positions of the stripe blocks to achieve the purpose of adjusting the height of the spiral stripes.

[0024] 2. Width change: This means changing the width of the spiral stripes. The two independent sub-blocks of the stripe block are bolted together by rivets, and the angle between the sub-blocks can be adjusted. The change in angle affects the width of the spiral stripes.

[0025] 3. Variable: This means changing the number of spiral stripes. Generally, the best vibration suppression effect is achieved when 3-5 spiral stripes are set up for vibration suppression cables, depending on the wire diameter. During setup, the stripe block mechanism can be completely removed to change the number of stripe forming blocks. Alternatively, the width limit can be reduced to a closed position using the variable width adjustment mechanism to achieve the desired effect.

[0026] The present invention can achieve flexible adjustment of the specifications of the spiral stripes (such as spacing, height, and width), and at the same time has the function of automatically cleaning the pile of materials, effectively ensuring the appearance quality and vibration suppression effect of the cable, and can efficiently handle the chopped and fallen materials, thereby improving the overall efficiency and quality of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a first perspective stereogram of the present invention;

[0029] Figure 2 It is the front view of the present invention;

[0030] Figure 3 is a second perspective stereogram of the present invention;

[0031] Figure 4 This is a schematic diagram of the internal structure of the rotary transmission assembly of the present invention;

[0032] Figure 5 This is an enlarged detail view of the rotational molding assembly of the present invention from a first perspective;

[0033] Figure 6 A second-angled detail view of the rotational molding assembly of the present invention;

[0034] Figure 7 This is an enlarged detail view of the stripe forming block of the present invention from the first perspective;

[0035] Figure 8 This is an enlarged detail view of the stripe forming block of the present invention from a second viewing angle;

[0036] Figure 9 This is an enlarged detail view of the stripe forming block of the present invention from a third perspective;

[0037] Figure 10 This is an enlarged detail view of the stripe forming block of the present invention from a fourth viewing angle;

[0038] Figure 11 This is an enlarged detail diagram of the stripe sub-block of the present invention;

[0039] Figure 12 for Figure 11 A magnified detail of position A;

[0040] Figure 13 is a cross-sectional view of a stripe sub-block of the present invention;

[0041] Figure 14 This is a schematic diagram of the cooperation relationship between the stripe sub-block and the shearing assembly of the present invention;

[0042] Figure 15 It is a schematic diagram of the alternating vortexes generated by underwater pipelines;

[0043] Figure 16 This is a common structure diagram for passive suppression of vortex-induced vibration;

[0044] In the figure: 1. Fixed molding assembly; 2. Rotary transmission assembly; 201. Suction port; 202. Power input shaft; 203. Power connection assembly; 204. Second gear; 3. Rotary molding assembly; 301. Synchronous gear ring; 302. Support block; 303. Adjusting rod; 304. Adjusting screw; 305. Adjusting nut; 306. Telescopic spring; 307. Arc-shaped mounting strip; 4. Striped sub-block; 401. Rotating column; 402. First gear; 403. Shear blade; 404. Magnetic hexagonal pin; 405. Magnetic hexagonal socket; 406. Second sprocket; 407. Chain; 408. First sprocket. DETAILED DESCRIPTION

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention. Example 1

[0046] Reference Figure 1-14 A variable specification production device for a vortex-induced vibration suppression structure includes a fixed molding component 1, a rotary molding component 3, and a rotary transmission component 2. The rotary molding component 3 is fixed inside the rotary transmission component 2, and the rotary molding component 3 is rotatably connected to the fixed molding component 1;

[0047] The main function of the fixed molding assembly 1 is to accumulate the molten extrudate and extrude the molten material into the desired shape by using the pressure difference;

[0048] In order to form spiral stripes, a stripe forming block is fixed on the side of the rotary forming component 3 away from the fixed forming component 1. The stripe forming block includes two stripe sub-blocks 4. The stripe sub-blocks 4 are offset from each other. The angle between the two stripe sub-blocks 4 is adjustable, and the distance between the two stripe sub-blocks 4 and the central extrusion hole of the fixed forming component 1 is adjustable.

[0049] When the extruded molten material flows between the two striping sub-blocks 4, prominent stripes are formed. A small variable-frequency motor or servo motor drives the rotary molding assembly 3 via a drive chain or synchronous belt, forming the desired spiral stripes. Adjusting the speed of the rotary drive motor and the extruder's pulling speed allows the spiral stripes' pitch to be adjusted. Example 2

[0050] Reference Figure 1-14 The difference between this embodiment and embodiment 1 is that a mounting groove is provided on the side of the rotary molding component 3 away from the fixed molding component 1, in which a support block 302 is fixed, and an adjusting rod 303 is movably mounted on the support block 302. An arc-shaped mounting bar 307 is fixed to the end of the adjusting rod 303 close to the middle extrusion hole, and an arc-shaped mounting opening is opened on the arc-shaped mounting bar 307. Both striped sub-blocks 4 are bolted to the arc-shaped mounting bar 307 through rivets passing through the arc-shaped mounting opening. An adjusting screw 304 is fixed to the end of the adjusting rod 303 away from the arc-shaped mounting bar 307, a telescopic spring 306 is sleeved on the outer side of the adjusting screw 304, and an adjusting nut 305 is mounted on the top of the adjusting screw 304.

[0051] By rotating the adjusting nut 305, the telescopic spring 306 can be compressed to change the compression amount of the telescopic spring, thereby changing the upper and lower positions of the stripe sub-block 4 on the arc-shaped mounting bar 307, thereby achieving the purpose of adjusting the height of the spiral stripes;

[0052] Since the two stripe sub-blocks 4 are bolted to the arc-shaped mounting strip 307 by rivets passing through the arc-shaped mounting opening, the relative positions of the two stripe sub-blocks 4 can be changed, thereby adjusting the angle between the stripe sub-blocks 4 and changing the width of the spiral stripes. Example 3

[0053] Reference Figure 1-14 The difference between this embodiment and embodiment 1 is that a plurality of shearing assemblies are rotatably mounted on a side of the stripe sub-block 4 away from the rotary forming assembly 3 near a mutually intersecting position, for shearing the accumulated materials generated during use. The shearing assemblies include a rotating column 401, and a shearing blade 403 is fixed to the outside of the rotating column 401. The shearing blades 403 on the outside of adjacent rotating columns 401 are staggered.

[0054] During the long extrusion process, the phenomenon of material pile-up will occur, that is, small waste materials will accumulate at the position where a pair of striped sub-blocks 4 are close to each other. The pile-up will randomly adhere to the spiral stripes, resulting in poor appearance of the extruded cable. The most fatal thing is that the spiral stripes are irregular, which reduces the vibration suppression effect.

[0055] The pile of materials will adhere to the surface of the striped sub-block 4 and the outside of the rotating column 401 and the shear blade 403. When the rotating column 401 rotates, the material wrapped around the outside of the rotating column 401 and the shear blade 403 will be torn into pieces and fall off, thereby achieving the purpose of automatically cleaning the pile of materials. Since the shear blades 403 are staggered, the pile of materials can be effectively broken up during the rotation process. Example 4

[0056] Reference Figure 1-14The difference between this embodiment and embodiment 3 is that a magnetic plug-in sleeve 405 is rotatably mounted on the striped sub-block 4. The magnetic inner hexagon plug-in sleeve 405 is at the same height as the surface of the striped sub-block 4. A magnetic hexagonal plug pin 404 is fixed on the rotating column 401. The magnetic hexagonal plug pin 404 and the magnetic inner hexagonal plug sleeve 405 match each other.

[0057] Since the surface height of the magnetic hexagonal socket 405 is the same as that of the striped sub-block 4, when the rotating column 401 is not installed in the hexagonal socket 405, the hexagonal socket 405 will not hinder the angle adjustment between the two striped sub-blocks 4. After adjusting to a suitable angle, the number of rotating columns 401 to be installed is selected according to actual conditions. The rotating column 401 is fixed by inserting the magnetic hexagonal pin 404 at one end thereof into the magnetic hexagonal socket 405. The magnetic connection makes assembly and disassembly more convenient. Example 5

[0058] Reference Figure 1-14 The difference between this embodiment and embodiment 4 is that a mounting cavity is provided inside the striped sub-block 4, the bottom end of the magnetic hexagonal socket 405 extends into the mounting cavity and is fixed with a first sprocket 408, a first gear 402 is rotatably mounted on the striped sub-block 4, the supporting shaft of the first gear 402 extends into the mounting cavity and is fixed with a second sprocket 406, the outer sides of the first sprocket 408 and the second sprocket 406 are synchronously driven by a chain 407, a synchronous gear ring 301 is rotatably mounted on the side of the rotary molding component 3 away from the fixed molding component 1, multiple first gears 402 are all engaged with the synchronous gear ring 301, a power input shaft 202 is rotatably mounted on the rotary transmission component 2, one end of the power input shaft 202 extends into the interior of the rotary transmission component 2 and is fixed with a second gear 204, the second gear 204 is engaged with the synchronous gear ring 301, and the other end of the power input shaft 202 extends to the outside of the rotary transmission component 2 and is fixed with a power connection component 203.

[0059] When the pile needs to be cleaned, the power connection assembly 203 is driven by the motor to rotate, thereby driving the second gear 204 to rotate. Since the second gear 204 is engaged with the synchronous gear ring 301, it can drive the synchronous gear ring 301 to rotate, and then drive the first gear 402 to rotate through the engagement. Then, through the transmission of the first sprocket 408, the second sprocket 406 and the chain 407, the multiple rotating columns 401 can be driven to rotate synchronously, thereby automatically cutting off the pile.

[0060] Among them, a suction port 201 is provided on the side of the rotating transmission component 2 away from the fixed forming component 1. The suction port 201 is provided with an external thread for connecting to a dust extraction pipe, chopping fallen materials and sucking them away through the suction port 201.

[0061] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to 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 the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0062] In the present invention, unless otherwise expressly specified or limited, terms such as "disposed," "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; they may refer to mechanical connections, direct connections, or indirect connections through an intermediate medium; they may refer to internal communication between two elements or interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0063] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by a person skilled in the art. The provision of power is also common knowledge in the art. The present invention is mainly used to protect mechanical devices, so the control method and circuit connection are not explained in detail in the present invention.

[0064] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A variable specification production device for a vortex-induced vibration suppression structure, comprising a fixed forming component (1), a rotary forming component (3) and a rotary transmission component (2), characterized in that: The rotary molding component (3) is fixed inside the rotary transmission component (2), and the rotary molding component (3) is rotationally connected to the fixed molding component (1); A stripe forming block is fixed on one side of the rotary forming component (3) away from the fixed forming component (1), the stripe forming block comprising two stripe sub-blocks (4), the stripe sub-blocks (4) intersecting each other, the angle between the two stripe sub-blocks (4) being adjustable, and the spacing between the two stripe sub-blocks (4) and the middle extrusion hole of the fixed forming component (1) being adjustable; The rotary molding component (3) is provided with a mounting groove on a side away from the fixed molding component (1), a support block (302) is fixed in the mounting groove, an adjustment rod (303) is movably mounted on the support block (302), an arc-shaped mounting strip (307) is fixed to one end of the adjustment rod (303) close to the middle extrusion hole, an arc-shaped mounting opening is provided on the arc-shaped mounting strip (307), and both striped sub-blocks (4) are bolted to the arc-shaped mounting strip (307) by rivets passing through the arc-shaped mounting opening; An adjusting screw (304) is fixed to one end of the adjusting rod (303) away from the arc-shaped mounting strip (307), a telescopic spring (306) is sleeved on the outer side of the adjusting screw (304), and an adjusting nut (305) is installed on the top end of the adjusting screw (304); A plurality of shearing assemblies are rotatably mounted on one side of the striped sub-block (4) away from the rotary forming assembly (3) and near mutually intersecting positions, and are used to shear the accumulated materials generated during use.

2. The variable specification production device of the vortex-induced vibration suppression structure according to claim 1 is characterized in that: The shearing assembly comprises a rotating column (401), a shearing blade (403) is fixed on the outside of the rotating column (401), and the shearing blades (403) on the outside of adjacent rotating columns (401) are arranged in a staggered manner.

3. The variable specification production device of the vortex-induced vibration suppression structure according to claim 2 is characterized in that: A magnetic hexagonal socket (405) is rotatably mounted on the striped sub-block (4), the magnetic hexagonal socket (405) having the same surface height as the striped sub-block (4), a magnetic hexagonal latch (404) is fixed on the rotating column (401), and the magnetic hexagonal latch (404) and the magnetic hexagonal socket (405) match each other.

4. The variable specification production device of the vortex-induced vibration suppression structure according to claim 3 is characterized in that: The striped sub-block (4) is provided with an installation cavity inside, the bottom end of the magnetic hexagonal socket (405) extends into the installation cavity and is fixed with a first sprocket (408), a first gear (402) is rotatably mounted on the striped sub-block (4), a supporting shaft of the first gear (402) extends into the installation cavity and is fixed with a second sprocket (406), and the first sprocket (408) and the outer sides of the second sprocket (406) are synchronously driven via a chain (407).

5. The variable specification production device of the vortex-induced vibration suppression structure according to claim 1 is characterized in that: A suction port (201) is provided on a side of the rotary transmission component (2) away from the fixed forming component (1), and the suction port (201) is provided with an external thread for connecting to a dust extraction pipe.

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