CN111071389B - Vortex-induced vibration suppression device and method capable of being rapidly assembled and disassembled - Google Patents
Vortex-induced vibration suppression device and method capable of being rapidly assembled and disassembled Download PDFInfo
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- CN111071389B CN111071389B CN201911226575.4A CN201911226575A CN111071389B CN 111071389 B CN111071389 B CN 111071389B CN 201911226575 A CN201911226575 A CN 201911226575A CN 111071389 B CN111071389 B CN 111071389B
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- armored cable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/56—Towing or pushing equipment
- B63B21/66—Equipment specially adapted for towing underwater objects or vessels, e.g. fairings for tow-cables
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Abstract
The invention discloses a vortex-induced vibration suppression device and method capable of being rapidly assembled and disassembled, and the device mainly comprises an automatic winding and unwinding storage winch and the like, wherein the automatic winding and unwinding storage winch is coaxially sleeved on an armored cable and axially moves, the automatic winding and unwinding storage winch is wound and stored with a diversion streamer, two tail ends of the diversion streamer are fixed on the armored cable through a hoop, a rope arranging rotating ring and a belt rope rotating ring are coaxially arranged on the automatic winding and unwinding storage winch, and the diversion streamer is guided, positioned, released and recovered through the rope arranging rotating ring and the belt rope rotating ring. The vortex-induced vibration suppression device comprehensively uses the vortex-induced vibration suppression effects of the flow guide ribbons and the spiral strakes, and can effectively suppress the vortex-induced vibration of the armored cable in water; the assembly and disassembly are rapid, and the use efficiency is high; the spiral angle and the thread pitch of the diversion streamer formed on the armored cable can be adjusted at any time, and the applicability is strong; the diversion streamer is covered on the armored cable for 360 degrees; the cylindrical structure is also suitable for marine risers, offshore platform jackets and other marine engineering and is used for inhibiting vortex-induced vibration.
Description
Technical Field
The invention relates to the field of ocean engineering, in particular to a vortex-induced vibration suppression device and method capable of being rapidly assembled and disassembled.
Background
The armored cable is a common connection mode between a ship and an underwater towed body, is used for transmitting underwater towed power and signals, and bears marine environmental loads such as wind, waves and currents in the working process. Under certain velocity of flow condition, when wave, ocean current flow through the armor cable, can produce the swirl of granting in turn at the armor cable rear, the swirl drops and can exert a periodic variation power to the armor cable for periodic vibration all takes place along rivers direction, perpendicular rivers direction in the armor cable, and vibration frequency is related to velocity of flow, armor cable diameter. Meanwhile, the vibration of the armored cable can also influence the flow field, so that the vortex is enhanced, and the resistance is increased. When the vortex shedding frequency is close to the natural frequency of the armored cable, the vibration of the armored cable is controlled by the vortex shedding process, and a lock-in phenomenon occurs, namely a vortex-induced vibration phenomenon which is a product of fluid-solid coupling. The occurrence of vortex-induced vibration can threaten the use safety of armored cables and underwater towed bodies, and can generate gradual fatigue damage, so that the potential use risk exists. In order to suppress the vortex-induced vibration of the armored cable, passive suppression measures such as a flow guide ribbon and a spiral strake are generally adopted and proved to be very effective. However, how to improve the existing measures and method and improve the effect of suppressing the vortex-induced vibration as much as possible is a technical task which needs to be accomplished urgently in the field.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a vortex-induced vibration suppression device and method capable of being assembled and disassembled quickly.
The purpose of the invention is achieved by the following technical scheme: the vortex-induced vibration suppression device capable of being rapidly assembled and disassembled mainly comprises an automatic winding and unwinding storage winch, an armored cable, a diversion streamer, a rope arranging turn, a belt rope turn and a clamp, wherein the automatic winding and unwinding storage winch is coaxially sleeved on the armored cable and axially moves, the automatic winding and unwinding storage winch is wound and stored with the diversion streamer, two ends of the diversion streamer are fixed on the armored cable through the clamp, the automatic winding and unwinding storage winch is coaxially provided with the rope arranging turn and the belt rope turn, and the diversion streamer is guided, positioned and released and recovered through the rope arranging turn and the belt rope turn.
The rope arranging rotating ring and the belt rope rotating ring synchronously and coaxially rotate around the armored cable, and the rope arranging rotating ring and the belt rope rotating ring are provided with small holes for allowing the diversion ribbons to pass through.
The rope arranging rotary ring and the rope belt rotary ring have bidirectional rotation and speed regulation capabilities.
The automatic winding and unwinding storage winch has bidirectional rotation and speed regulation capability.
The rope arranging rotating ring freely moves along the middle shaft of the automatic winding and unwinding storage winch, the rope outlet position and the rope inlet position are synchronously adjusted, and the moving speed is adjustable.
The diversion streamer is composed of a diversion streamer main rope and a plurality of streamer strips woven on the diversion streamer main rope in an arrangement mode, and the diversion streamer is specifically designed according to the size of an actual armored cable.
The main rope of the diversion streamer is made of a Kaffra material.
The ribbon strip is made of acrylic fiber.
The vortex-induced vibration suppression method capable of being assembled and disassembled quickly mainly comprises the following steps:
1) arranging a plurality of hoops at the water inlet end of the armored cable to fix the flow guide ribbons;
2) along with the release of the armored cable from top to bottom, the rope arranging rotating ring synchronously rotates anticlockwise (overlooking) to release the diversion streamer, and the rope outlet position is synchronously adjusted along the axial direction of the automatic winding and unwinding storage winch;
3) the belt rope rotating ring synchronously rotates anticlockwise (overlook) to drive the diversion streamer to tightly wind on the armored cable;
4) when the release length of the armored cable is reached, fixing the diversion streamer by using a plurality of clamps;
5) after the installation is finished, the underwater part of the armored cable is completely covered and is in a protected state;
6) when the armored cable is recycled, the clamp of the flow guide ribbon is firstly removed;
7) the rope arranging rotating ring and the belt rope rotating ring synchronously rotate clockwise (overlook), the rope arranging rotating ring continuously adjusts the rope entering position along the middle shaft of the automatic winding and unwinding storage winch, and the flow guide ribbon continuously removes the winding on the armored cable, transmits and stores the wind guide ribbon on the automatic winding and unwinding storage winch.
The invention has the beneficial effects that: the vortex-induced vibration suppression device comprehensively uses the vortex-induced vibration suppression effects of the flow guide ribbons and the spiral strakes, and can effectively suppress the vortex-induced vibration of the armored cable in water; the rapid loading and unloading, the use efficiency is high, when the device runs, the process is automatic and mechanized, and the automation degree is greatly improved; the spiral angle and the thread pitch of the diversion streamer formed on the armored cable can be adjusted at any time, and the applicability is strong; the diversion streamer covers the armored cable for 360 degrees, flexibly deals with different incoming flows and sea conditions, and can be widely applied to the armored cable; the method is not only suitable for armored cables, but also suitable for cylindrical structures in marine risers, marine platform jackets and other marine engineering to inhibit vortex-induced vibration.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of a flow-guiding streamer of the present invention.
Description of reference numerals: the automatic winding and unwinding storage winch 1, the armored cable 2, the flow guide ribbon 3, the rope arrangement rotating ring 4, the belt rope rotating ring 5, the hoop 6, the ribbon strip 7 and the flow guide ribbon main rope 8.
Detailed Description
The invention will be described in detail below with reference to the following drawings:
example (b): as shown in the attached drawings, the vortex-induced vibration suppression device capable of being rapidly assembled and disassembled mainly comprises an automatic winding and unwinding storage winch 1, an armored cable 2, a diversion streamer 3, a rope arrangement rotating ring 4, a belt rope rotating ring 5 and a hoop 6, wherein the automatic winding and unwinding storage winch 1 is coaxially sleeved on the armored cable 2 and axially moves, the automatic winding and unwinding storage winch 1 is wound and stored with the diversion streamer 3, the diversion streamer 3 is composed of a diversion streamer main rope 8 and a plurality of streamer strips 7 which are arranged and woven on the diversion streamer main rope 8, and the size of the diversion streamer 3 is specifically designed according to the size of the actual armored cable 2. The main rope 8 of the diversion streamer is made of Ka Fu La material. The ribbon strip 7 is made of acrylic fiber. Two ends of the diversion ribbon 3 are fixed on the armored cable 2 through a hoop 6, so that slippage and separation between the diversion ribbon 3 and the armored cable 2 are avoided. The automatic winding and unwinding storage winch 1 is coaxially provided with a rope arranging rotating ring 4 and a belt rope rotating ring 5, and the guide ribbon 3 is guided, positioned, released and recovered through the rope arranging rotating ring 4 and the belt rope rotating ring 5.
The rope arranging rotating ring 4 and the belt rope rotating ring 5 synchronously and coaxially rotate around the armored cable 2, and the rope arranging rotating ring 4 and the belt rope rotating ring 5 are both provided with small holes for allowing the diversion ribbons 3 to pass through. The rope arranging rotary ring 4 and the rope belt rotary ring 5 have bidirectional rotation and speed regulation capability. The automatic winding and unwinding storage winch 1 has bidirectional rotation and speed regulation capability. With sufficient storage capacity for the streamers 3. The rope arranging rotating ring 4 freely moves along the middle shaft of the automatic winding and unwinding storage winch 1, and the moving speed is adjustable when the rope discharging position (releasing) and the rope entering position (retracting) are synchronously adjusted. The rotating speeds of the automatic winding and unwinding storage winch 1, the rope arranging rotating ring 4 and the belt rope rotating ring 5 can be adjusted according to actual requirements, so that the releasing speed of the diversion ribbon 3 and the thread pitch of the diversion ribbon 3 wound on the armored cable 2 are adjusted.
The vortex-induced vibration suppression method capable of being assembled and disassembled quickly mainly comprises the following steps:
1) a plurality of hoops 6 (5) are arranged at the water inlet end of the armored cable 2 to fix the diversion ribbons 3;
2) along with the release of the armored cable 2 from top to bottom, the rope arranging rotating ring 4 synchronously rotates anticlockwise (overlooking) to release the diversion streamers 3, and the rope outlet position is synchronously adjusted along the axial direction of the automatic winding and unwinding storage winch 1;
3) the rope rotating ring 5 synchronously rotates anticlockwise (overlook) to drive the diversion streamer 3 to be tightly wound on the armored cable 2; through the synchronous linkage of the device, the functions of automatic winding (installation), automatic unwinding (disassembly), automatic release, automatic recovery, automatic storage and the like of the diversion ribbon 3 can be realized.
4) When the release length of the armored cable 2 is reached, fixing the diversion ribbons 3 by using a plurality of hoops 6 (5);
5) after the installation is finished, the underwater part of the armored cable 2 is completely covered and is in a protected state;
6) when the armored cable 2 is recovered, the clamp 6 of the diversion streamer 3 is firstly removed;
7) the rope arranging rotating ring 4 and the belt rope rotating ring 5 synchronously rotate clockwise (overlook), the rope arranging rotating ring 4 continuously adjusts the rope entering position along the central shaft of the automatic winding and unwinding storage winch 1, and the flow guide ribbon 3 continuously releases the winding on the armored cable 2, transmits and stores the wind guide ribbon on the automatic winding and unwinding storage winch 1.
According to the invention, the flow guide ribbons 3 are continuously and spirally wound on the armored cable 2, the flow guide ribbons 3 can also play a role in inhibiting vortex-induced vibration, and meanwhile, the spiral winding realizes the substitution and simulation of the spiral strake, so that the vortex-induced vibration inhibiting effect similar to that of the spiral strake is achieved. The during operation, 3 initial arrangements of water conservancy diversion ribbon are stored on automatic receive and release storage winch 1, and armor cable 2 is located the axis of automatic receive and release storage winch 1, and when armor cable 2 released under water, the rope of arranging turns 4, the synchronous rotation of band rope turns 5, and water conservancy diversion ribbon 3 is automatic on armor cable 2, closely spiral winding, and helix angle, pitch on armor cable 2 can be realized through the rotational speed of adjusting rope of arranging turns 4, band rope turns 5, and automatic receive and release storage winch 1 can rotate in good time, adjusts out rope length. The head end and the tail end of the armored cable 2 are provided with clamps 6 to fix the flow guide ribbons 3. When the armored cable 2 is recovered, the rope arranging rotating ring 4 and the belt rope rotating ring 5 reversely rotate, so that the automatic unwinding, recovery and storage of the diversion ribbons 3 are realized.
It should be understood that equivalent substitutions and changes to the technical solution and the inventive concept of the present invention should be made by those skilled in the art to the protection scope of the appended claims.
Claims (8)
1. A vortex-induced vibration suppression device capable of being rapidly assembled and disassembled is characterized in that: the automatic winding and unwinding device mainly comprises an automatic winding and unwinding storage winch (1), an armored cable (2), a diversion ribbon (3), a rope arranging rotating ring (4), a rope belt rotating ring (5) and a clamp (6), wherein the automatic winding and unwinding storage winch (1) is coaxially sleeved on the armored cable (2) and moves axially, the automatic winding and unwinding storage winch (1) winds and stores the diversion ribbon (3), two tail ends of the diversion ribbon (3) are fixed on the armored cable (2) through the clamp (6), the automatic winding and unwinding storage winch (1) is coaxially provided with the rope arranging rotating ring (4) and the rope belt rotating ring (5), and meanwhile, the diversion ribbon (3) is guided, positioned, released and recovered through the rope arranging rotating ring (4) and the rope belt rotating ring (5); the flow guide ribbon (3) is composed of a flow guide ribbon main rope (8) and a plurality of ribbon strips (7) woven on the flow guide ribbon main rope (8).
2. The rapidly detachable vortex induced vibration suppression device according to claim 1, characterized in that: the rope arranging rotating ring (4) and the belt rope rotating ring (5) synchronously and coaxially rotate around the armored cable (2), and the rope arranging rotating ring (4) and the belt rope rotating ring (5) are provided with small holes for allowing the diversion ribbons (3) to pass through.
3. The rapidly detachable vortex-induced vibration suppression device according to claim 1 or 2, characterized in that: the rope arranging rotating ring (4) and the rope-carrying rotating ring (5) have bidirectional rotation and speed regulation capability.
4. The rapidly detachable vortex induced vibration suppression device according to claim 1, characterized in that: the automatic winding and unwinding storage winch (1) has bidirectional rotation and speed regulation capability.
5. The rapidly detachable vortex induced vibration suppression device according to claim 1, characterized in that: the rope arranging rotating ring (4) freely moves along the middle shaft of the automatic winding and unwinding storage winch (1), the rope outlet position and the rope inlet position are synchronously adjusted, and the moving speed is adjustable.
6. The rapidly detachable vortex induced vibration suppression device according to claim 1, characterized in that: the main rope (8) of the diversion streamer is made of a Kaffla material.
7. The rapidly detachable vortex induced vibration suppression device according to claim 1, characterized in that: the ribbon strip (7) is made of acrylic fiber.
8. A vortex-induced vibration suppression method using the rapidly detachable vortex-induced vibration suppression apparatus according to claim 1, characterized in that: the method mainly comprises the following steps:
1) a plurality of hoops (6) are arranged at the water inlet end of the armored cable (2) to fix the flow guide ribbon (3);
2) along with the release of the armored cable (2) from top to bottom, the rope arranging rotating ring (4) synchronously rotates anticlockwise to release the flow guide ribbon (3), and the rope outlet position is synchronously adjusted along the axial direction of the automatic winding and unwinding storage winch (1);
3) the belt rope rotating ring (5) synchronously rotates anticlockwise to drive the diversion streamer (3) to be tightly wound on the armored cable (2);
4) when the release length of the armored cable (2) is reached, the diversion streamer (3) is fixed by a plurality of clamps (6);
5) after the installation is finished, the underwater part of the armored cable (2) is completely covered and is in a protected state;
6) when the armored cable (2) is recovered, the clamp (6) of the diversion streamer (3) is firstly removed;
7) the rope arranging rotating ring (4) and the belt rope rotating ring (5) synchronously rotate clockwise, the rope arranging rotating ring (4) is continuously adjusted into a rope position along the middle shaft of the automatic winding and unwinding storage winch (1), and the flow guide ribbon (3) is continuously removed from winding on the armored cable (2) and is conveyed and stored on the automatic winding and unwinding storage winch (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911226575.4A CN111071389B (en) | 2019-12-04 | 2019-12-04 | Vortex-induced vibration suppression device and method capable of being rapidly assembled and disassembled |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911226575.4A CN111071389B (en) | 2019-12-04 | 2019-12-04 | Vortex-induced vibration suppression device and method capable of being rapidly assembled and disassembled |
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| Publication Number | Publication Date |
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| CN111071389A CN111071389A (en) | 2020-04-28 |
| CN111071389B true CN111071389B (en) | 2021-05-14 |
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| CN111098978B (en) * | 2019-12-04 | 2021-05-14 | 中国船舶重工集团公司第七一五研究所 | Vortex-induced vibration suppression device and method capable of being rapidly assembled and disassembled |
| CN114455001B (en) * | 2021-12-20 | 2023-06-27 | 宜昌测试技术研究所 | Adhesive type flow guiding mechanism for towing rope |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56120842A (en) * | 1980-02-25 | 1981-09-22 | Mitsui Eng & Shipbuild Co Ltd | Vibration preventing device for underwater pipe |
| GB0112164D0 (en) * | 2001-05-18 | 2001-07-11 | Crp Group Ltd | Protection of underwater elongate members |
| CN101613994A (en) * | 2009-07-03 | 2009-12-30 | 江苏法尔胜新日制铁缆索有限公司 | Compound type wind, rain and vibration resistance stay cable |
| CN101975036A (en) * | 2010-07-29 | 2011-02-16 | 中国石油大学(华东) | Method for inhibiting vortex-induced vibration of novel deepwater drilling riser |
| CN102434546A (en) * | 2011-12-09 | 2012-05-02 | 中国船舶重工集团公司第七一五研究所 | Guide streamer |
| CN208028551U (en) * | 2018-04-18 | 2018-10-30 | 中国水产科学研究院东海水产研究所 | A kind of armoured cable water conservancy diversion nested structure and its handler |
| CN111098978B (en) * | 2019-12-04 | 2021-05-14 | 中国船舶重工集团公司第七一五研究所 | Vortex-induced vibration suppression device and method capable of being rapidly assembled and disassembled |
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