CN115404918A

CN115404918A - Offshore wind power negative pressure barrel anti-scouring and levelness adjusting device and operation method thereof

Info

Publication number: CN115404918A
Application number: CN202210943166.1A
Authority: CN
Inventors: 施兴华; 刘博�; 张婧
Original assignee: Jiangsu University of Science and Technology
Current assignee: Jiangsu University of Science and Technology
Priority date: 2022-08-08
Filing date: 2022-08-08
Publication date: 2022-11-29
Anticipated expiration: 2042-08-08
Also published as: CN115404918B

Abstract

The invention discloses an offshore wind power negative pressure barrel anti-scouring and levelness adjusting device which comprises a negative pressure barrel, wherein the negative pressure barrel is internally divided into 7 compartments, the 7 compartments comprise 6 fan-shaped compartments and a circular compartment, and each compartment is provided with a butt joint hole for butt joint and air extraction with an air extraction pump; the side wall of the external sleeve barrel is provided with a plurality of round small holes, round flat plates are arranged in the fan-shaped cabin sections of the negative pressure barrel, the peripheries of the plates are connected with hydraulic rods through rotating rods, and a cross brace is arranged between the hydraulic rods and a rear support frame; sand with the same gradation is filled between the external sleeve barrel and the negative pressure barrel, and after the external sleeve barrel is sunk, the lateral load and the scour are resisted, and the lateral frictional resistance of the pile can be enhanced and the bearing capacity of the pile is improved due to the plurality of small holes on the external sleeve barrel; when the barrel top levelness of the round flat plate in the cabin after the barrel is sunk does not meet the requirement, hydraulic pressure can be carried out on the hydraulic device through the round flat plate, namely the inclination of the negative pressure barrel is adjusted through the interaction of the round flat plate and the soil body, and the device can detect in real time in the using process.

Description

Offshore wind power negative pressure barrel anti-scouring and levelness adjusting device and operation method thereof

Technical Field

The invention relates to the technical field of underwater gliders, in particular to an anti-scouring and levelness adjusting device for an offshore wind power negative pressure barrel and an operation method of the anti-scouring and levelness adjusting device.

Background

Offshore wind energy resources are rich, the development of offshore wind turbines is greatly supported, and the negative pressure barrel foundation is widely used in offshore engineering at home and abroad.

The negative pressure barrel foundation can be prefabricated on land in advance and then towed to an installation sea area, the foundation does not need to be piled, the construction speed is high, and the window period of offshore construction operation is effectively utilized.

When the negative pressure barrel foundation is installed, air is pumped to sink, so that the sinking control requirement on the barrel body is higher. In the negative pressure sinking process, water pressure difference is generated inside and outside the barrel to cause soil body seepage, but the overlarge seepage can cause the soil body in the barrel to liquefy or flow, so that the structure is inclined. In some sea areas, the negative pressure barrel is greatly influenced by water flow scouring, and the structure inclination is possible.

In a certain coastal sea area, after the negative pressure barrel of the offshore wind turbine is sunk, the levelness deviation of the top of the negative pressure barrel does not conform to the pile top levelness allowable deviation due to the influence of water flow washing and errors in the construction process, and the pile top levelness allowable deviation cannot be reached by adopting a plurality of remedial measures, so that the suction barrel foundation always bears larger eccentric load, and finally two offshore wind turbines collapse in the sea area to cause serious loss.

Disclosure of Invention

The purpose of the invention is as follows: aiming at the problems, the invention aims to provide an anti-scouring and levelness adjusting device for a negative pressure barrel of offshore wind power, which solves the problems of water flow scouring, inclination of the negative pressure barrel in the construction process and the like and avoids the secondary occurrence of collapse accidents. And provides its operation method.

The technical scheme is as follows: the utility model provides an offshore wind power negative pressure bucket scour prevention and levelness adjusting device, including the negative pressure bucket, the slope detection mechanism that sinks, prevent rivers scouring mechanism, levelness guiding mechanism, a control system, a tower section of thick bamboo, butt joint pipe, the slope detection mechanism that sinks installs in negative pressure bucket inside and divides its inside into a plurality of independent bays, the whole of both constitutions is arranged in prevents inside rivers scouring mechanism, the coaxial setting of three, tower section of thick bamboo closing cap three top and fixed, control system installs on a tower section of thick bamboo, the outer wall of negative pressure bucket is fixed with prevent rivers scouring mechanism, be equipped with a levelness guiding mechanism in every bay inside the negative pressure bucket respectively, every levelness guiding mechanism is connected with slope detection mechanism that sinks respectively, every bay is furnished with a butt joint pipe, butt joint pipe is worn to establish to install on a tower section of thick bamboo perpendicularly at an interval and is led to corresponding bay, every butt joint pipe is connected the aspiration pump respectively, the pump, slope detection mechanism that sinks, levelness guiding mechanism is connected with control system signal respectively.

The device can prevent the negative pressure barrel from inclining in the sinking process, and improves the construction precision; the negative pressure barrel can resist lateral load when being washed by water flow after sinking, so that the harm of water flow washing is reduced; when the levelness of the top of the barrel does not meet the requirement after the negative pressure barrel is inclined, the problem can be solved by an effective method for correction.

The sinking inclination detection mechanism comprises a support assembly, a rectangular cabin separation plate, a circular cabin separation plate, a cross brace, a trapezoidal table and a soil body displacement detection piece, wherein the circular cabin separation plate is arranged in the middle of the negative pressure barrel, the bottom end of the circular cabin separation plate is coaxially fixed with the negative pressure barrel, the middle of the negative pressure barrel is divided into a circular independent cabin separation, six rectangular cabin separation plates are arranged between the circular cabin separation plate and the negative pressure barrel at intervals, an annular wall between the circular cabin separation plate and the negative pressure barrel is equally divided into six fan-shaped independent cabin separation, two side edges of the rectangular cabin separation plate are respectively fixed with the outer wall of the circular cabin separation plate and the inner wall of the negative pressure barrel, a support assembly is arranged in each cabin separation, the support assembly is of a hexagonal cylindrical structure formed by sequentially welding six rectangular steel plates, the outer peripheral wall of the support assembly is respectively fixed with the outer wall of the rectangular cabin separation plate, the outer wall of the circular cabin separation plate and the inner wall of the negative pressure barrel, the upper portion, facing the inner side of each rectangular steel plate is provided with a trapezoidal table, the soil body displacement detection piece is arranged on the trapezoidal table through the cross brace, and the horizontal degree adjustment mechanism is arranged in the support assembly and is sequentially connected with the six trapezoidal tables.

Further, soil body displacement detection spare includes laser emitter, laser receiver, install respectively on one of them of inserted sheet and serve, the stull is fixed in trapezoidal platform, be equipped with the recess on it, install a plurality of fixture blocks one through a plurality of last locking spring intervals on one of them medial surface of recess, install a plurality of fixture blocks two through a plurality of lower locking spring intervals on another medial surface, the relative both sides of inserted sheet correspond respectively and are equipped with a plurality of breachs, the inserted sheet inserts in the recess and through fixture block one, two joints of fixture blocks are on the stull, laser emitter, laser receiver respectively with control system signal connection.

Further, the water current scouring prevention mechanism comprises an external sleeve barrel, side partition plates, a lower rib plate, a negative pressure barrel is coaxially arranged in the external sleeve barrel, a hollow area is arranged between the negative pressure barrel and the external sleeve barrel, the outer wall of the negative pressure barrel and the inner wall of the external sleeve barrel are fixed through the side partition plates arranged at a plurality of intervals, the lower rib plate is of an annular structure, the cross section of the lower rib plate is an isosceles right triangle, the bottom edge of the internal sleeve barrel of the external sleeve barrel is provided with a circle of 45-degree inclined bulges, the inclined edge of the lower rib plate is fixed with the bottom of the external sleeve barrel, the two right-angle edges are respectively fixed with the bottom edges of the side partition plates, the outer wall of the negative pressure barrel is fixed, a plurality of holes are distributed at intervals on the outer peripheral surface of the external sleeve barrel, and a mixture of sand and gravel which are the same as the external sleeve barrel is filled in the hollow area.

The filler in the holes and the hollow areas is sand which is obtained through engineering geological exploration and has the same grading with the surrounding soil body, and a certain amount of stones are used for ensuring the effective filling of the sand, so that the sand is prevented from flowing out of the holes.

Preferably, the distance between the negative pressure barrel and the outer sleeve barrel is 0.5-0.55 m.

Further, levelness guiding mechanism includes the circle flat board, the dwang, axis of rotation one, axis of rotation two, the connecting rod, the hydraulic stem, the support frame, the circle flat board sets up in the upper portion of negative pressure bucket and is close to a tower section of thick bamboo, the circumference interval of circle flat board is equipped with a plurality of dwangs, the one end of dwang is passed through axis of rotation one and is articulated with the dull and stereotyped outer peripheral face of circle, the other end passes through two articulated connecting rods that have respectively of axis of rotation, every connecting rod is connected with a hydraulic stem respectively, every hydraulic stem is installed on the slope detection mechanism that sinks through a support frame respectively, hydraulic stem and control system signal connection.

Preferably, the levelness adjusting mechanism further comprises a direction limiter and buffer rubber, the direction limiter comprises two limiting blocks, the rotating rod and the connecting rod are arranged on the upper side of the end portion of the rotating rod in a relatively parallel mode at intervals, the buffer rubber is fixed on the upper side of the end portion, corresponding to the connecting rod, of the connecting rod, and the side faces of the two limiting blocks are abutted to the buffer rubber respectively.

The direction limiter is a device for limiting the rotating rod to rotate upwards, the limiting block is a trilateral block structure consisting of two right-angle sides and a section of circular arc, and when the rotating rod tends to rotate upwards, the welded direction limiter can extrude the buffer rubber attached to the upper surface of the connecting rod, so that the rotating rod cannot rotate upwards; in order to enable the round flat plate to move downwards better when the round flat plate is subjected to hydraulic pressure of the hydraulic rod, the rotating rod can be rotated downwards by a small angle and then the direction limiter is welded.

An operation method of the offshore wind power negative pressure barrel anti-scouring and levelness adjusting device comprises the following steps:

the method comprises the following steps: the suction pump is used for sucking air from each compartment through the butt joint pipe, so that negative pressure is formed in the negative pressure barrel, the negative pressure barrel starts to be constructed and sinks, the sinking inclination detection mechanism starts to detect, the control system calculates the average value of the displacement of the soil body in the fan-shaped compartment from the barrel top through the feedback information of the sinking inclination detection mechanism, and then the displacement of the whole negative pressure barrel in the sinking process is adjusted through the difference value of the displacement of each compartment from the barrel top, so that the negative pressure barrel meets the requirement in the sinking process, and the inclination in the sinking process is prevented;

step two: after sinking, when the negative pressure barrel is washed by water flow, the pile side friction force at the periphery of the negative pressure barrel is increased through the water flow washing-proof mechanism, the horizontal bearing capacity of the negative pressure barrel is improved, meanwhile, the water flow washing-proof mechanism offsets partial wave force of the water flow, sand outside the device can flow into the water flow washing-proof mechanism under the washing of the water flow, the self weight is kept, and the negative pressure barrel cannot be washed away by the water flow;

step three: after the negative pressure barrel reaches the designated position, when the levelness of the barrel top is found not to meet the requirement, the control system sends an instruction to the levelness adjusting mechanism, the levelness adjusting mechanism on the corresponding compartment receives the instruction to extrude the filler in the negative pressure barrel, the levelness of the negative pressure barrel top is adjusted within an error allowable range through an acting force and a reacting force, and the eccentric load borne by the negative pressure barrel base is eliminated.

Has the beneficial effects that: compared with the prior art, the invention has the advantages that:

1. can avoid the negative pressure bucket to take place to incline at the in-process that sinks, guarantee to sink in-process barrel displacement and can not appear great deviation, improve the precision of work progress.

2. After the negative pressure barrel is sunk, the side load and the overturning moment generated by scouring of water flow and the like can be resisted, sand around the barrel is reinforced, and the negative pressure barrel is prevented from inclining due to scouring of the water flow.

3. If the negative pressure barrel inclines, the design requirements can not be met on the levelness, the hydraulic device is used for downwards pressing and adjusting the displacement of the circular flat plate in the sector bulkhead, so that the levelness of the top end of the barrel can meet the requirements, and the problems existing in the construction and use processes are fully considered.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a top view of the internal structure of the present invention;

FIG. 3 is a schematic view of the connection structure of the trapezoidal stage;

FIG. 4 is a schematic view of the installation structure of the soil displacement detecting member;

figure 5 shows the arrangement of the soil displacement sensing members in each compartment;

FIG. 6 is a flow chart of the detection of the sinking process of the soil displacement detection member;

FIG. 7 is a schematic view of an external keg connection;

FIG. 8 is a schematic view of a levelness adjustment mechanism;

FIG. 9 is a schematic view showing a structure in which a direction limiter and a cushion rubber are dispersed;

FIG. 10 is a schematic view of the structure of the direction limiter abutting against the cushion rubber;

fig. 11 is an exploded view of the present invention.

Detailed Description

The present invention will be further illustrated with reference to the following figures and specific examples, which are to be understood as merely illustrative and not restrictive of the scope of the invention.

The invention discloses an offshore wind power negative pressure barrel anti-scouring and levelness adjusting device which comprises a sinking inclination detecting mechanism 1, a water flow scouring preventing mechanism 2, a levelness adjusting mechanism 3, a control system 4, a tower 5 and a butt joint pipe 6 as shown in figures 1 and 11. The butt joint pipe 6 is a device for performing butt joint with an air suction pump when the offshore wind turbine operates and sinks to suck air. The control system 4 is located inside the tower 5. The sinking inclination detection mechanism 1 is arranged in the negative pressure barrel 1-1 and divides the interior of the negative pressure barrel 1-1 into a plurality of independent compartments, the whole formed by the three is arranged in the water flow scouring prevention mechanism 2, the three are coaxially arranged, the tower barrel 5 covers the three and is fixed, the outer wall of the negative pressure barrel 1-1 is fixed with the water flow scouring prevention mechanism 2, each compartment in the negative pressure barrel 1-1 is respectively provided with a levelness adjusting mechanism 3, each levelness adjusting mechanism 3 is respectively connected with the sinking inclination detection mechanism 1, each compartment is matched with a butt joint pipe 6, the butt joint pipes 6 are vertically arranged on the tower barrel 5 in a penetrating way at intervals and lead to the corresponding compartments, each butt joint pipe 6 is respectively connected with an air suction pump, and the air suction pump, the sinking inclination detection mechanism 1 and the levelness adjusting mechanism 3 are respectively in signal connection with the control system 4.

As shown in fig. 2 and 3, the sinking inclination detecting mechanism 1 comprises a supporting component 1-2, a rectangular compartment plate 1-3, a circular compartment plate 1-4, a cross brace 1-5, a trapezoidal platform 1-6 and a soil displacement detecting component 1-7, wherein the circular compartment plate 1-4 is arranged in the middle of a negative pressure barrel 1-1, the bottom end of the circular compartment plate is coaxially fixed with the negative pressure barrel 1-1, the middle of the negative pressure barrel 1-1 is divided into a circular independent compartment, six rectangular compartment plates 1-3 are arranged between the circular compartment plate 1-4 and the negative pressure barrel 1-1 at intervals, an annular wall body between the two is equally divided into six fan-shaped independent compartments, two side edges of a rectangular compartment plate 1-3 are respectively fixed with the outer wall of a round compartment plate 1-4 and the inner wall of a negative pressure barrel 1-1, a supporting component 1-2 is arranged in each compartment, the supporting components 1-2 are six rectangular steel plates which are welded with each other and arranged in a hexagon shape, the supporting components are welded with the top surface of the negative pressure barrel 1-1 and are welded with the side surface of the negative pressure barrel 1-1, the side surface of the rectangular side partition plate 1-3 and the side surface of the round side partition plate 1-4, a trapezoidal table 1-6 is welded on each rectangular steel plate of the supporting components 1-2, a cross brace 1-5 is welded on each trapezoidal table 1-6, and a soil body displacement detection piece 1-7 is installed on each cross brace 1-5 through an elastic locking device.

As shown in figure 4, the soil body displacement detection part 1-7 comprises a laser transmitter 1-7-3 and a laser receiver 1-7-4 which are respectively arranged on one end of an inserting sheet, a cross brace 1-5 is fixed in a trapezoidal table 1-6 and is provided with a groove, a plurality of first clamping blocks are arranged on one inner side surface of the groove at intervals through a plurality of upper locking springs 1-7-1, a plurality of second clamping blocks are arranged on the other inner side surface of the groove at intervals through a plurality of lower locking springs 1-7-2, a plurality of notches are respectively and correspondingly arranged on two opposite sides of the inserting sheet, the inserting sheet is inserted into the groove and is clamped on the cross brace 1-5 through the first clamping blocks and the second clamping blocks, and the laser transmitter 1-7-3 and the laser receiver 1-7-4 are respectively in signal connection with a control system 4. The raised part in the cross brace 1-5 can move up and down through an upper locking spring 1-7-1 and a lower locking spring 1-7-2, a concave part corresponding to the soil body displacement detection part 1-7 is arranged on the soil body displacement detection part 1-7, and a laser transmitter 1-7-3 and a laser receiver 1-7-4 are arranged at the top end of the soil body displacement detection part 1-7. The working mode is as follows: the soil body displacement detection piece 1-7 is installed on the transverse support 1-5, the circular protruding part can be jacked open when the soil body displacement detection piece slides inwards, the upper locking spring 1-7-1 and the lower locking spring 1-7-2 can pop out the protruding part after installation is completed, the soil body displacement detection piece 1-7 can be locked on one side of the square protrusion, and data can be recorded through the laser transmitter 1-7-3 and the laser receiver 1-7-4 at the front end of the soil body displacement detection piece 1-7 when the soil body displacement detection piece sinks.

As shown in fig. 5 and 6, the soil displacement detecting members 1 to 7 are connected to the control system 4, six sector bays are denoted as a, b, c, d, e, and f, and specific reference numerals are respectively given to the sector bays and the soil displacement detecting members 1 to 7 in the sector bays in the control system: the concrete labels of the soil body displacement detection parts 1-7 in the fan-shaped compartment a are 1-7-a1, 1-7-a2, 1-7-a3, 1-7-a4, 1-7-a5 and 1-7-a6; the concrete labels of the soil body displacement detection parts 1-7 in the fan-shaped compartment b are 1-7-b1, 1-7-b2, 1-7-b3, 1-7-b4, 1-7-b5 and 1-7-b6; the concrete labels of the soil body displacement detection parts 1-7 in the fan-shaped compartment c are 1-7-c1, 1-7-c2, 1-7-c3, 1-7-c4, 1-7-c5 and 1-7-c6; the concrete labels of the soil body displacement detection parts 1-7 in the fan-shaped compartment d are 1-7-d1, 1-7-d2, 1-7-d3, 1-7-d4, 1-7-d5 and 1-7-d6; the concrete labels of the soil displacement detection parts 1-7 in the fan-shaped compartment e are 1-7-e1, 1-7-e2, 1-7-e3, 1-7-e4, 1-7-e5 and 1-7-e6; the concrete labels of the soil displacement detection parts 1-7 in the fan-shaped compartment f are 1-7-f1, 1-7-f2, 1-7-f3, 1-7-f4, 1-7-f5 and 1-7-f6; . The working mode is as follows: when the offshore wind turbine sinks, the offshore wind turbine is connected with the air pump through the butt joint pipes 6 in the six fan-shaped compartments, negative pressure is formed in the negative pressure barrel 1-1 through air extraction, the control system 4 firstly measures the displacement of the soil displacement detection pieces 1-7 in each fan-shaped compartment respectively, for example, in the fan-shaped compartment a, the measured displacement of each soil displacement detection piece in the compartment is 1-7-a1, 1-7-a2, 1-7-a3, 1-7-a4, 1-7-a5 and 1-7-a6, the average value of the displacement of the soil in the fan-shaped compartment from the top of the barrel is calculated through the control system 4, similarly, the average value of the displacement of the soil body in the bays b, c, d, e and f from the top of the barrel can be obtained and recorded in the control system 4, namely 1-7-b, 1-7-c, 1-7-d, 1-7-e and 1-7-f, the control system 4 can measure the average value of the displacement of the soil body in each bay from the top of the barrel at variable time in the sinking process and compare whether the recorded six displacement average values have larger difference or not, and if the results are consistent after comparison, the negative pressure barrel 1-1 in the sinking process is proved to have no inclination; if the comparison result shows that the difference is larger, the negative pressure is adjusted by the air pump butted with the butt joint pipe 4 in each corresponding compartment to control the descending speed and the displacement, and the control system 4 ensures that the whole negative pressure barrel cannot incline in the descending process through the real-time detection of the soil displacement detection pieces 1 to 7 in the descending process.

The water flow scouring prevention mechanism 2 comprises an outer sleeve barrel 2-1, side partition plates 2-2 and a lower ribbed plate 2-4, wherein a negative pressure barrel 1-1 is coaxially arranged in the outer sleeve barrel 2-1, a hollow area 2-3 is arranged between the outer wall of the negative pressure barrel 1-1 and the inner wall of the outer sleeve barrel 2-1 are fixed through a plurality of side partition plates 2-2 arranged at intervals, the lower ribbed plate 2-4 is of an annular structure, the section of the lower ribbed plate is an isosceles right triangle, a circle of 45-degree inclined bulges are arranged on the bottom edge of the inner barrel of the outer sleeve barrel 2-1, the inclined edge of the lower ribbed plate 2-4 is fixed with the bottom of the outer sleeve barrel 2-1, two right-angle edges are respectively fixed with the bottom edges of the side partition plates 2-2 and the outer wall of the negative pressure barrel 1-1, a plurality of holes are distributed on the outer peripheral surface of the outer sleeve barrel 2-1 at intervals, and a mixture of sand and crushed stone which are matched with the outer level of the outer sleeve barrel is filled in the hollow area 2-3.

With reference to fig. 1 and 2, the negative pressure barrel 1-1 is divided into 7 compartments by the rectangular side partition plate 1-3 and the circular side partition plate 1-4, including 6 sectorial compartments and 1 circular compartment. An external sleeve barrel 2-1 is arranged at a position which is 0.5-0.55 m away from the outside of the negative pressure barrel 1-1 in the circumferential direction, the structure of the external sleeve barrel 2-1 is that the upper end is open, the bottom is closed, and a plurality of round small holes are arranged on the side wall.

Referring to fig. 2 and 7, the side face of the outer sleeve 2-1 is connected with the side face of the negative pressure barrel 1-1 through a side partition plate 2-2 in a welding mode, the bottom of the outer sleeve 2-1 is welded with the bevel edge of the lower rib plate 2-4, one end of the right-angle edge of the lower rib plate 2-4 is welded on the side partition plate 2-2, the other end of the right-angle edge of the lower rib plate is welded on the negative pressure barrel 1-1, the area between the outer sleeve 2-1 and the negative pressure barrel 1-1 is called a blank area 2-3, and the blank area 2-3 is filled with sand with the same grading. The bottom is made into 45-degree inclined connection, so that the resistance of the negative pressure barrel 1-1 in the mud entering process can be reduced, the speed of the negative pressure barrel in the mud entering process is improved, and the influence of the external sleeve barrel 2-1 on the mud entering of the negative pressure barrel 1-1 is reduced. The working principle is as follows: the side surface of the outer sleeve barrel 2-1 is provided with a plurality of holes, the blank area 2-3 is filled with gravels with the same grading, when the negative pressure barrel 1-1 starts to be washed by water flow, the gravels of the holes and the blank area 2-3 resist the washing of the water flow, and the lateral load bearing capacity is improved; sand around the outer sleeve 2-1 can enter between the side walls through the side holes to reinforce the sand around the barrel and the soil body; the holes on the outer sleeve barrel 2-1 increase the friction between the soil and the barrel body, and improve the lateral frictional resistance between the barrel and the surrounding soil body.

As shown in figure 8, the levelness adjusting mechanism 3 comprises a circular flat plate 3-1, a rotating rod 3-2, a rotating shaft I3-3, a rotating shaft II 3-4, a connecting rod 3-5, a hydraulic rod 3-6, a supporting frame 3-7, a direction limiter 3-2-1 and buffer rubber 3-2-2, wherein the circular flat plate 3-1 is connected with the rotating rod 3-2 through the rotating shaft I3-3, the rotating rod 3-2 is connected with the connecting rod 3-5 through the rotating shaft II 3-4, the connecting rod 3-5 is welded to the top end of the hydraulic rod 3-6, the hydraulic rod 3-6 is sleeved on the supporting frame 3-7 and is welded, and the supporting frame 3-7 is directly welded to the trapezoidal table 1-6.

As shown in figures 9 and 10, a direction limiter 3-2-1 is welded on the rotating rod 3-2 near the top end of the negative pressure barrel 1-1, the direction limiter 3-2-1 prevents the rotating rod from rotating upwards, and gives an initial downward angle to the rotating rod 3-2-1, so that the round flat plate 3-1 can move downwards more easily, and a buffer rubber 3-2-2 is attached to the position where the direction limiter 3-2-1 is connected with the connecting rod 3-5, so that the direction limiter 3-2-1 is protected, and excessive extrusion is avoided. The working mode is as follows: after the negative pressure barrel 1-1 is settled, a level gauge is used for measuring the levelness of the pile top, if the levelness meets the requirement, a soil body displacement detection part 1-7 measures the displacement and records data in a control system 4, if the levelness measured by the level gauge does not meet the requirement, the control system 4 controls the hydraulic pressure of hydraulic rods 3-6 in each fan-shaped compartment, a connecting rod 3-5 is pushed, a rotating rod 3-2 rotates downwards around a rotating shaft two 3-4, a round flat plate 3-1 at the rotating shaft one 3-3 starts to press the soil body downwards, the inclination of the negative pressure barrel is adjusted through the interaction force of the round flat plate 3-1 and the soil body, so that the levelness meets the requirement, the soil body displacement detection part 1-7 measures the displacement of the top of the soil body data barrel, the data at the moment are recorded in the control system 4, then the soil body displacement detection part 1-7 detects the displacement of the soil body to the top of the barrel in real time and compares the displacement with the data recorded in the control system 4, if deviation occurs, the hydraulic rods 3-6 are timely controlled by the control system 4, so that the hydraulic rods are not subjected to be subjected to overlarge eccentric load, and the fan collapse occurs.

The operation method of the offshore wind power negative pressure barrel anti-scouring and levelness adjusting device comprises the following steps:

the method comprises the following steps: when the negative pressure barrel begins to construct and sink, the soil body displacement detection part begins to detect, the control system firstly calculates the average displacement value of the soil body in the fan-shaped compartment from the barrel top through the soil body displacement detection part, and then adjusts the displacement of the whole negative pressure barrel in the sinking process through the difference value of the displacement of the six fan-shaped compartments from the barrel top, so that the negative pressure barrel meets the requirements in the sinking process, and the inclination in the sinking process is prevented.

Step two: after sinking, pack the grit that the exploration engineering geology obtained and soil layer gradation is the same between outside sleeve and the negative pressure bucket, when the negative pressure bucket received washing away of rivers, the outside sleeve of porous hole has increased the peripheral stake side friction power of bucket on the one hand, improve the horizontal bearing capacity of bucket, the outside sleeve of porous hole on the other hand can rely on the hole to offset the partial wave power of rivers, the grit of blank space also can reduce washing away of rivers to the bucket, when rivers were washed away by the bucket, partial grit of sleeve outside can get into blank space through the hole, make the grit around the negative pressure bucket remain a certain amount all the time, can not washed away by rivers

Step three: after subsiding, when the levelness of discovery bucket top is unsatisfied to require, implement hydraulic pressure instruction to hydraulic means through control center, the hydraulic stem promotes the connecting rod and removes to the horizontal direction, and the dwang passes through the axis of rotation and rotates, and the round flat board can move down, adjusts bucket top levelness through effort and the reaction force between soil and the round flat board in the error allowance range, avoids negative pressure bucket basis to receive great eccentric load.

The negative pressure barrel can be prevented from inclining in the sedimentation process, and the sedimentation accuracy in the construction process and the safety in the construction process are improved; after the negative pressure barrel 1-1 is sunk, the external sleeve barrel 2-1 can resist lateral load by improving the pile side friction between the sand and the external sleeve barrel 2-1 and the connection between the reinforced soil and the sand between the external sleeve barrel 2-1, so that the scouring resistance to water flow is improved; when the levelness of the negative pressure barrel 1-1 does not meet the requirement after the horizontal degree adjusting mechanism 3 is settled, the vertical displacement of the negative pressure barrel 1-1 can be adjusted in a small range through the interaction of the round flat plate 3-1 and the soil body, so that the inclination is prevented. The invention can avoid the negative pressure barrel from inclining in the construction and use processes of the negative pressure barrel and reduce the occurrence of offshore wind power accidents.

The soil body displacement detection part compares the displacement of each sector bulkhead through the control system in the sinking process of the negative pressure barrel, and when the displacement of the soil body from the barrel top has certain displacement difference in the sector bulkhead, the descending speed and the displacement of the negative pressure barrel are controlled by adjusting the negative pressure of the air suction pump on the butt joint pipe; the outer sleeve can resist lateral load through the structure of the outer sleeve; when the levelness of the top of the negative pressure barrel after the settlement is finished is not met by measuring the levelness of the top of the negative pressure barrel through the level gauge, the levelness of the negative pressure barrel is adjusted by controlling different acting forces of the hydraulic rods in the fan-shaped compartments through the control system so that the negative pressure barrel meets the requirement, the control system records the displacement of the current soil body of the soil body displacement detection piece from the top of the barrel, and when the displacement of the soil body displacement detection piece from the top of the barrel is changed compared with the previously recorded data, the control system timely adjusts the levelness through the hydraulic rods.

Claims

1. The utility model provides an offshore wind power negative pressure bucket scour prevention and levelness adjusting device which characterized in that: the device comprises a negative pressure barrel (1-1), a sinking inclination detection mechanism (1), a current scouring prevention mechanism (2), a levelness adjusting mechanism (3), a control system (4), a tower barrel (5) and a butt joint pipe (6), wherein the sinking inclination detection mechanism (1) is installed inside the negative pressure barrel (1-1) and divides the inside of the negative pressure barrel into a plurality of independent compartments, the whole body formed by the negative pressure barrel and the independent compartments is arranged inside the current scouring prevention mechanism (2), the three parts are coaxially arranged, the tower barrel (5) covers the three parts and is fixed, the control system (4) is installed on the tower barrel (5), the outer wall of the negative pressure barrel (1-1) is fixed with the current scouring prevention mechanism (2), each compartment inside the negative pressure barrel (1-1) is internally provided with one levelness adjusting mechanism (3), each levelness adjusting mechanism (3) is respectively connected with the sinking inclination detection mechanism (1), each compartment is matched with one butt joint pipe (6), the butt joint pipe (6) is vertically arranged on the tower barrel (5) in a penetrating mode at intervals and is communicated with the corresponding compartment, each butt joint pipe (6) is respectively connected with an extraction pump, the extraction mechanism, the level inclination detection mechanism (1) and the control mechanism (4) is respectively connected with the sinking inclination adjustment mechanism (4).

2. The offshore wind power negative pressure bucket anti-scouring and levelness adjusting device of claim 1, characterized in that: the sinking inclination detection mechanism (1) comprises a support component (1-2), a rectangular compartment plate (1-3), a circular compartment plate (1-4), a cross brace (1-5), a trapezoidal platform (1-6) and a soil body displacement detection piece (1-7), wherein the circular compartment plate (1-4) is arranged in the middle of a negative pressure barrel (1-1), the bottom end of the circular compartment plate is coaxially fixed with the negative pressure barrel (1-1), the middle of the negative pressure barrel (1-1) is divided into a circular independent compartment, six rectangular compartment plates (1-3) are arranged between the circular compartment plate (1-4) and the negative pressure barrel (1-1) at intervals, an annular wall body between the two is equally divided into six fan-shaped independent compartments, two side edges of a rectangular compartment plate (1-3) are respectively fixed with the outer wall of a round compartment plate (1-4) and the inner wall of a negative pressure barrel (1-1), a supporting component (1-2) is arranged in each compartment, the supporting components (1-2) are of a hexagonal tubular structure formed by sequentially welding six rectangular steel plates, the peripheral walls of the hexagonal tubular structure are respectively fixed with the outer wall of the rectangular compartment plate (1-3), the outer wall of the round compartment plate (1-4) and the inner wall of the negative pressure barrel (1-1), the upper part of the inner side of each rectangular steel plate is provided with a trapezoidal table (1-6), and a soil body displacement detection part (1-7) is arranged on the trapezoidal table (1-6) through a transverse support (1-5) ) And the levelness adjusting mechanism (3) is arranged in the supporting component (1-2) and is sequentially connected with the six trapezoidal tables (1-6).

3. The offshore wind power negative pressure barrel anti-scouring and levelness adjusting device of claim 2, characterized in that: the soil body displacement detection part (1-7) comprises a laser emitter (1-7-3) and a laser receiver (1-7-4) which are respectively installed at one end of an inserting sheet, a cross brace (1-5) is fixed in a trapezoidal table (1-6), a groove is formed in the cross brace, a plurality of first clamping blocks are installed on one inner side surface of the groove at intervals through a plurality of upper locking springs (1-7-1), a plurality of second clamping blocks are installed on the other inner side surface of the groove at intervals through a plurality of lower locking springs (1-7-2), a plurality of notches are correspondingly formed in two opposite sides of the inserting sheet respectively, the inserting sheet is inserted into the groove and is clamped on the cross brace (1-5) through the first clamping blocks and the second clamping blocks, and the laser emitter (1-7-3) and the laser receiver (1-7-4) are respectively in signal connection with a control system (4).

4. The offshore wind power negative pressure barrel anti-scouring and levelness adjusting device of claim 1, characterized in that: the water flow scouring prevention mechanism (2) comprises an outer sleeve barrel (2-1), side partition plates (2-2) and a lower rib plate (2-4), a negative pressure barrel (1-1) is coaxially arranged in the outer sleeve barrel (2-1), a hollow area (2-3) is arranged between the outer wall of the negative pressure barrel (1-1) and the inner wall of the outer sleeve barrel (2-1) through a plurality of side partition plates (2-2) which are arranged at intervals, the lower rib plate (2-4) is of an annular structure, the cross section of the lower rib plate is of an isosceles right triangle, a circle of 45-degree inclined bulge is arranged on the bottom edge of an inner barrel of the outer sleeve barrel (2-1), the inclined edge of the lower rib plate (2-4) is fixed with the bottom of the outer sleeve barrel (2-1), two right-angle edges are respectively fixed with the bottom edges of the side partition plates (2-2) and the outer wall of the negative pressure barrel (1-1), a plurality of holes are distributed on the outer peripheral surface of the outer sleeve barrel (2-1) at intervals, and a mixture of sand and gravel which are the same as the outer level of the outer barrel is filled in the hollow area (2-3).

5. The offshore wind power negative pressure bucket anti-scouring and levelness adjusting device of claim 4, characterized in that: the distance between the negative pressure barrel (1-1) and the outer sleeve barrel (2-1) is 0.5-0.55 m.

6. The offshore wind power negative pressure bucket anti-scouring and levelness adjusting device of claim 1, characterized in that: the levelness adjusting mechanism (3) comprises a circular flat plate (3-1), rotating rods (3-2), a first rotating shaft (3-3), a second rotating shaft (3-4), connecting rods (3-5), hydraulic rods (3-6) and supporting frames (3-7), the circular flat plate (3-1) is arranged on the upper portion of the negative pressure barrel (1-1) and is close to the tower barrel (5), a plurality of rotating rods (3-2) are arranged at intervals in the circumferential direction of the circular flat plate (3-1), one end of each rotating rod (3-2) is hinged to the outer circumferential surface of the circular flat plate (3-1) through the first rotating shaft (3-3), the other end of each rotating rod is hinged to one connecting rod (3-5) through the second rotating shaft (3-4), each connecting rod (3-5) is connected with one hydraulic rod (3-6), each hydraulic rod (3-6) is installed on the sinking inclination detecting mechanism (1) through one supporting frame (3-7), and the hydraulic rods (3-6) are in signal connection with a control system (4).

7. The offshore wind power negative pressure barrel anti-scouring and levelness adjusting device of claim 6, characterized in that: the levelness adjusting mechanism (3) further comprises a direction limiter (3-2-1) and buffer rubber (3-2-2), the direction limiter (3-2-1) comprises two limiting blocks, the connecting part of the rotating rod (3-2) and the connecting rod (3-5) is arranged on the upper side of the end part of the rotating rod (3-2) in a relatively parallel mode at intervals, the buffer rubber (3-2-2) is fixed on the upper side of the corresponding end part of the connecting rod (3-5), and the side faces of the two limiting blocks are abutted to the buffer rubber (3-2-2) respectively.

8. An operation method of the offshore wind power negative pressure bucket anti-scouring and levelness adjusting device according to any one of claims 1 to 7 is characterized by comprising the following steps: