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CN-121654129-B - High-stability offshore wind power foundation

CN121654129BCN 121654129 BCN121654129 BCN 121654129BCN-121654129-B

Abstract

The invention relates to the technical field of offshore wind power foundations and discloses a high-stability offshore wind power foundation, which comprises a pile foundation, wherein a protection insertion cylinder is circumferentially arranged on the outer side of the pile foundation, the peripheral side edge of the top surface of the protection insertion cylinder horizontally extends outwards to form a horizontally extending skirt plate, a plurality of rubber air bags are arranged below the horizontally extending skirt plate, an expansion mechanism is arranged on the rubber air bags, a monitoring mechanism is arranged on the outer side of the protection insertion cylinder, an annular transition bin is rotatably arranged on the outer side of the circumference of the protection insertion cylinder, a turbulence mechanism and an adjusting mechanism are arranged on the annular transition bin, and a plurality of electromagnetic current meters are arranged on the outer side of the pile foundation through a mounting frame. Through vortex mechanism cooperation adjustment mechanism to carrying out accurate effective vortex to the incoming flow, prevent the horseshoe vortex to form, improve the stability of whole pile foundation, simultaneously, through setting up expandable rubber gasbag, can fill the washing hole after its inflation, realize washing hole and take safeguard measures automatically after the early warning, further improve the stability of whole pile foundation.

Inventors

  • LI YANCANG
  • WANG XIANGLI
  • Chen Moyu
  • WU PINGCHUAN
  • ZHANG GAOQING
  • GUO QINGLIN
  • QIAO WEITAO
  • WEN ZICHEN

Assignees

  • 河北工程大学

Dates

Publication Date
20260508
Application Date
20251217

Claims (8)

  1. 1. A high stability offshore wind power foundation comprising: Pile foundation (1) buried on the seabed, the outside of the pile foundation is circularly provided with a protection insertion cylinder (15) for being inserted into the seabed, the peripheral side edge of the top surface of the protection insertion cylinder (15) horizontally extends outwards to form a horizontally extending apron board, a plurality of rubber air bags (31) are circumferentially and equidistantly arranged below the horizontally extending apron board, the rubber air bags (31) are provided with expansion mechanisms, and after sediment below the horizontally extending apron board is flushed by seawater to form a flushing pit, the corresponding rubber air bags (31) are expanded and filled in the flushing pit through the expansion mechanisms; The outer side of the protective insertion cylinder (15) is provided with a monitoring mechanism matched with the expansion mechanism to work; the annular transition bin (4) is rotatably arranged on the circumferential outer side of the protective insertion cylinder (15), a turbulence mechanism is arranged on the annular transition bin (4), and an adjusting mechanism for adjusting the angle of the annular transition bin (4) is arranged on the annular transition bin; The electromagnetic current meters (3) are used for monitoring the current direction and are arranged on the outer side of the pile foundation (1) through the mounting frames (2), and the angle of the annular transition bin (4) is adjusted through the adjusting mechanism after the electromagnetic current meters (3) monitor the current direction; the protection insert cylinder (15) is rotationally connected with a rotation connecting bin (16) through a bearing (22) on the circumferential outer side, an annular mounting plate (17) is fixed on the circumferential outer side of the annular transition bin (4), the annular transition bin (4) is sleeved on the rotation connecting bin (16) and is fixedly connected with the rotation connecting bin (16) through the annular mounting plate (17) through bolts, the adjusting mechanism comprises a driven annular gear (9) fixed on the outer side of the pile foundation (1), an adjusting motor (14) fixed on the inner side wall of the annular transition bin (4) and a driving gear (8) fixed with an output shaft of the adjusting motor (14), and the driving gear (8) is meshed with the driven annular gear (9); The vortex mechanism comprises a plurality of even equidistant rings which are arranged on a diversion bin (6) on the circumferential outside of an annular transition bin (4), the diversion bin (6) is communicated with the inside of the annular transition bin (4) through a through hole, a plurality of rubber buffer tubes (13) which are inflated by filling water are communicated with the two sides of the diversion bin (6), a second infusion tube (12) is communicated with the inner side wall of the annular transition bin (4), a second control valve is arranged on the second infusion tube (12), a plurality of second pressure sensors which are used for monitoring the internal water pressure of the diversion bin are fixed on the diversion bin (6), the quantity of the diversion bin (6) is at least 6 and is distributed in an annular even equidistant manner, a plurality of rubber buffer tubes (13) on the same side are distributed evenly in a rectangular array, the connection angle of the rubber buffer tubes (13) and the diversion bin (6) is not vertical, so that the rubber buffer tubes (13) are inflated and then incline, a plurality of adjacent two diversion bins (6) are distributed in a cross manner on opposite sides, a plurality of the rubber buffer tubes (13) are distributed on the side, and the jet flow (42) is distributed on the most outside of the diversion bin (6) in an equal distance, and the jet flow is fixed on the sea level.
  2. 2. The high-stability offshore wind power foundation according to claim 1, wherein the rubber buffer tube (13) is communicated with the diversion bin (6) through a connecting component, the rubber buffer tube (13) is provided with an opening at one end and is closed at the other end, the connecting component comprises a built-in tube (18) fixed on the diversion bin (6), the diversion bin (6) is provided with diversion holes communicated with the rubber buffer tube (13), the diversion holes are formed in the built-in tube (18), the outer side of the built-in tube (18) is in threaded connection with a first fixing ring (19), the inner peripheral wall of the first fixing ring (19) is fixedly provided with a first extrusion ring (21), the inner peripheral wall of the first extrusion ring (21) is in a corresponding inclined plane with the outer peripheral wall of the built-in tube (18) so as to extrude the rubber buffer tube (13), and the opening end of the rubber buffer tube (13) is adhered to the built-in tube (18) through a powerful glue ring, and a plurality of first fastening bolts (20) penetrating the rubber buffer tube (13) to the inner side and the first fastening bolts.
  3. 3. The high-stability offshore wind power foundation according to claim 1 or 2, wherein the rubber air bag (31) is adhered below the horizontally-extending apron board through strong glue, a plurality of bolts penetrating above the horizontally-extending apron board are fixed on the top surface of the rubber air bag (31), nuts are screwed on the bolts, the nuts are abutted against the horizontally-extending apron board after screwing, the rubber air bag (31) is fixed, the expansion mechanism comprises a third infusion tube (32) penetrating through the horizontally-extending apron board and communicated with the rubber air bag (31), and a third control valve arranged on the third infusion tube (32), and a third pressure sensor for monitoring water pressure in the rubber air bag (31) is arranged on the rubber air bag (31).
  4. 4. The high-stability offshore wind power foundation according to claim 3, wherein the monitoring mechanism comprises an annular monitoring bin (5), monitoring pieces and a monitoring opening assembly, the annular monitoring bin (5) is fixed on the outer side of the protection insertion cylinder (15) and forms a closed space with the protection insertion cylinder (15), a plurality of partition plates are arranged in the annular monitoring bin, the annular monitoring bin (5) is divided into a plurality of monitoring single bins which respectively correspond to the plurality of rubber air bags (31), and the monitoring pieces and the monitoring opening assembly are arranged in each monitoring single bin.
  5. 5. The offshore wind power foundation with high stability according to claim 4, wherein the monitoring piece is a buoyancy sensor (33), the buoyancy sensor is vertically fixed in a monitoring single bin, a monitoring hole communicated with the outside is formed in the monitoring single bin, the monitoring opening assembly comprises a cylindrical metal bin (35) which is fixed on the inner wall of an annular monitoring bin (5) and is provided with two ends, a movable rod (38) with one end penetrating out of the monitoring hole is transversely penetrated in the monitoring opening assembly, a plugging plate (36) is vertically fixed at the penetrating end of the movable rod (38), an annular sealing ring (37) which is annularly arranged outside the movable rod (38) is fixed on the plugging plate (36), the outer peripheral wall of the annular sealing ring (37) is an inclined plane capable of being inserted into the monitoring hole, a limiting ring (39) and a stop ring (40) are respectively fixed on the outer peripheral wall of the movable rod (38), a tension spring (41) sleeved outside the movable rod (38) is arranged between the limiting ring (39) and the stop ring (40), and a vacuum control valve (34) is arranged in the monitoring single bin.
  6. 6. The high-stability offshore wind power foundation according to claim 1, wherein a fixed plugging mechanism is arranged between the protective insertion barrel (15) and the pile foundation (1), the fixed plugging mechanism comprises a butt joint assembly and a plugging assembly, the butt joint assembly comprises a butt joint frame (23) fixed on the outer peripheral side of the pile foundation (1) and a fixed frame (25) fixed on the inner peripheral side of the protective insertion barrel (15), and a plurality of positioning blocks (24) vertically inserted into the butt joint frame (23) and butted with the fixed frame are fixed below the fixed frame (25).
  7. 7. The high-stability offshore wind power foundation according to claim 6, wherein the plugging component comprises two second extrusion rings (26) fixed above the inner peripheral side of the protective insertion cylinder (15), the two second extrusion rings (26) are distributed up and down, one sides of the two second extrusion rings (26) opposite to each other are inclined planes, one side of the two second extrusion rings (26) opposite to each other is provided with a second fixing ring (27) fixed on the inner peripheral side of the protective insertion cylinder (15) through a second fastening bolt (28), opposite sides of the two second fixing rings (27) are inclined planes corresponding to the second extrusion rings (26) respectively, an annular rubber inner cushion (29) is arranged in the protective insertion cylinder (15), the upper side and the lower side of the annular rubber inner cushion (29) are respectively arranged in gaps between the upper second fixing ring (27) and the second extrusion rings (26), the upper side and the lower side of the annular rubber inner cushion (29) are respectively adhered to the upper side and the lower side of the second extrusion rings (26) through strong glue, an annular rubber inner cushion (30) is integrally formed between the two annular rubber inner cushion (29), the annular rubber inner cushion (30) and the annular rubber inner cushion (30) are integrally formed, the protection is inserted and is equipped with on section of thick bamboo (15) intercommunication and is used for filling up first transfer line (10) of annular rubber inner pad (29) and protection that forms between the section of thick bamboo (15) inserted, be equipped with first control valve on first transfer line (10), be fixed with on the protection is inserted section of thick bamboo (15) and be used for monitoring annular rubber inner pad (29) and protection and insert the first pressure sensor of section of thick bamboo (15) in forming the space internal water pressure.
  8. 8. The high-stability offshore wind power foundation according to claim 1, wherein the horizontally-extending apron board is fixedly provided with annular skirt platforms (7), the peripheral side edges of the top surfaces of the annular skirt platforms (7) are inwards concave towards the central axis of the annular skirt platforms to form a buffer slope, the lower parts of the annular transition bins (4) are outwards-extending buffer slopes, and the electromagnetic current meters (3) are at least three in number and are uniformly distributed in an annular mode at equal intervals.

Description

High-stability offshore wind power foundation Technical Field The invention relates to the technical field of offshore wind power foundations, in particular to a high-stability offshore wind power foundation. Background At present, an offshore wind turbine foundation in an offshore wind power project is mainly a large-diameter single pile foundation, however, due to the influence of wave current, a local scouring phenomenon can occur around the offshore wind power single pile foundation, water current can form horseshoe vortex back surface on the upstream surface of the foundation after meeting and blocking, karman vortex is formed, meanwhile, flow lines on two sides of the foundation can shrink, the shearing stress of the water current to a bottom bed can be increased by changing local flow state, so that the foundation is locally formed into a scouring pit, the bearing capacity of a pile foundation is reduced, the foundation is possibly unstable, and scouring protection is an important content of the offshore wind power project. For the scouring protection problem of the single pile foundation, various solutions have been proposed, and the solutions are mainly divided into active protection and passive protection, wherein the active protection comprises measures such as guard ring protection and solidified soil protection, and the passive protection comprises measures such as stone throwing protection and bionic aquatic weed protection (as shown in fig. 1 and 2). The Chinese patent CN 118461676B discloses a scour prevention device for an offshore wind power foundation, during construction, a protection body of an annular structure is sleeved on the outer side of the offshore wind power foundation, so that direct scour of sea water or sediment to the offshore wind power foundation is avoided, the design of the annular structure of the protection body is more convenient for sea water to flow through an arc-shaped outer surface, and the impact force of water flow on the protection body is reduced. The solidified soil protection needs to be mixed with chemical curing agents (such as cement or polymer), the construction must be carried out under dry conditions, the failure risk is increased in a marine humid environment, the construction cost is high, meanwhile, seawater erosion and tidal flushing easily lead to cracking or peeling of a cured layer, the maintenance cost is increased, stone is easily scattered or unevenly settled to form a protection gap when the water flow is strong in the stone throwing protection, the bionic aquatic weed protection depends on the principle of water flow deceleration, but in practice, the influence of the change of the ocean current direction is large, the material needs to be designed with anti-corrosion (such as a polyethylene coating), the cost is high, the material is easily adhered to or physically damaged by marine organisms, and the material needs to be cleaned every 2-3 years. The application provides a high-stability offshore wind power foundation to solve the problems, because the running of seawater flow can form horseshoe vortex so as to scour the seabed, empty the seabed and influence the stability of a pile foundation, the protection measures can only slow down scour, can not inhibit vortex causes, and can not timely warn and take inhibition measures after a scour pit is formed. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a high-stability offshore wind power foundation, which is used for accurately and effectively disturbing incoming flow through a turbulence mechanism matched with an adjusting mechanism, preventing horseshoe vortex from forming and improving the stability of the whole pile foundation, and simultaneously, through a detection mechanism matched with an expandable rubber air bag, when the detection mechanism detects that sediment is washed away, the corresponding rubber air bag is expanded through the expansion mechanism to fill a flushing pit, so that sediment is prevented from being flushed away by ocean current, early warning of the flushing pit is realized, and protective measures are taken after the early warning, so that the stability of the whole pile foundation is improved. The invention provides a high-stability offshore wind power foundation, which comprises a pile foundation buried on a seabed, wherein a protective insertion cylinder for inserting the seabed is circumferentially arranged on the outer side of the foundation, the peripheral side edge of the top surface of the protective insertion cylinder horizontally extends outwards to form a horizontally extending apron board, a plurality of rubber air bags are circumferentially arranged below the horizontally extending apron board at equal intervals, and an expansion mechanism is arranged on each rubber air bag and is used for expanding and filling a flushing pit through the expansion mechanism corresponding to each rubber air bag after sedime