Process flange for folding offshore wind power single pile foundation

Abstract

The utility model relates to a process flange for folding an offshore wind power single pile foundation. The process flange comprises a flange top plate, an annular track, an inner supporting annular plate and a flange bottom plate, the flange top plate and the flange bottom plate are correspondingly arranged up and down; the inner support ring plate is correspondingly and fixedly connected between the inner circumferences of the flange top plate and the flange bottom plate; the annular track is correspondingly and fixedly connected between the outer circumferences of the flange top plate and the flange bottom plate; auxiliary holes which are uniformly distributed in the circumferential direction are formed in the surface of the flange top plate; bolt holes which are evenly distributed in the circumferential direction are formed in the surface of the flange bottom plate. According to the utility model, the construction operations such as sand blasting, coating and welding can be conveniently carried out on the flange at the top of the pile section, the secondary repair of paint at the section of the steel pipe pile can be effectively avoided, the processing efficiency of steel pile production can be greatly improved, and the processing cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of processing and manufacturing single piles of offshore wind turbine foundations, in particular to a process flange used for closing offshore wind turbine single pile foundations. Background Art

[0002] The single pile of offshore wind turbine foundation is usually composed of large-diameter steel pipes, which is currently the most widely used wind turbine foundation. The advantages of steel pipe pile foundation are that it does not require seabed preparation and is easy to install. The processing and manufacturing technology of domestic steel pipe piles is very mature, but due to the different equipment capabilities and processing technologies of different manufacturers, the processing efficiency varies. In order to shorten the processing and manufacturing cycle of pipe piles, many manufacturers have proposed innovative processes and supporting construction tools in the processing and manufacturing. The construction tools can well cooperate with the actual on-site production and can greatly reduce the cost of using machinery and labor costs.

[0003] In the process of making thousand-ton steel pipe piles, they are generally divided into 3 to 4 sections according to their weight and length. After the sections are assembled and welded in the workshop, they are sandblasted and painted, and then assembled. If the process flanges are not used in the sandblasting and assembly process, the section pipe section rotates directly on the roller frame, which will inevitably lead to the inability to paint the rotating contact area of ​​the roller frame, or the contact area between the section and the roller frame roller during the assembly will damage the paint on the surface of the steel pile, resulting in waste of paint materials and reduced processing efficiency. Summary of the invention

[0004] In view of the above problems, the purpose of the utility model is to provide a process flange for closing the offshore wind power single pile foundation, which can greatly improve the processing efficiency of steel pipe piles, shorten the processing cycle of steel pipe piles, reduce the waste of coating materials, and reduce the processing cost of steel pipe piles.

[0005] The technical solution adopted by the utility model is as follows:

[0006] The utility model proposes a process flange for closing an offshore wind power single pile foundation, comprising a flange top plate, an annular track, an inner support ring plate and a flange bottom plate; the flange top plate and the flange bottom plate are arranged correspondingly up and down; the inner support ring plate is fixedly connected between the inner circumference of the flange top plate and the flange bottom plate; the annular track is fixedly connected between the outer circumference of the flange top plate and the flange bottom plate; the surface of the flange top plate is provided with circumferentially uniformly distributed process holes; the surface of the flange bottom plate is provided with circumferentially uniformly distributed bolt holes.

[0007] Furthermore, reinforcing ribs are evenly distributed circumferentially between the flange top plate and the flange bottom plate; the upper part, lower part, outer side and inner side of the reinforcing ribs are respectively welded and fixed to the flange top plate, flange bottom plate, annular track and inner support ring plate.

[0008] Furthermore, the upper surface of the flange top plate is evenly distributed with lifting ears in the circumferential direction.

[0009] Furthermore, annular track stops are provided on both sides of the outer circumference of the annular track.

[0010] Furthermore, the outer diameter of the flange top plate is the same as the outer diameter of the steel pile top flange, and the inner diameter is slightly smaller than the inner diameter of the pile top flange.

[0011] Furthermore, the width of the annular track is slightly larger than the width of the roller of the roller frame. The annular track is placed on the roller of the roller frame and rotates with the roller. The rotation center line of the annular track is the center line of the steel pile.

[0012] Furthermore, the process hole is an arc-shaped hole.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model first uses a crane and a sling to assemble the process flange on one end of the pile top flange of the steel pipe pile segment, and uses bolts and nuts to install and fix it; then one end of the segmented process flange is placed on the roller of the roller frame, and the rotation of the roller drives the process flange to rotate, thereby driving the steel pipe pile segment to rotate. The proposal and use of the process flange avoids direct contact between the roller and the outer surface of the steel pipe pile segment, resulting in damage to the parent material on the surface of the steel pipe pile body; the steel pipe pile top flange segment can directly complete all the paint coating operations, which well solves the problems of segmented sandblasting and discontinuous coating, avoids secondary repair of segmented paint, and improves the coating efficiency of single pile segments and entire piles.

[0015] 2. The utility model can significantly improve the processing efficiency of steel pipe piles, shorten the processing cycle of steel pipe piles, reduce the waste of coating materials, and reduce the processing cost of steel pipe piles.

[0016] Based on the above effects, the utility model can be widely promoted in the field of manufacturing and processing steel pipe piles for offshore wind turbine foundations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of the main structure;

[0019] Figure 3 for Figure 1 Schematic diagram of the side structure.

[0020] Among them, the figure markings are: 1-flange top plate; 2-annular track; 3-inner support ring plate; 4-process hole; 5-flange bottom plate; 6-bolt hole; 7-reinforcement rib plate; 8-annular track stopper; 9-lifting ear. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] It should be noted that, in the description of the present utility model, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not mean that the device or element must have a specific orientation, be constructed and operated in a specific orientation.

[0023] See attached Figure 1-3 , a specific structure of an embodiment of a process flange for closing an offshore wind power single pile foundation proposed by the utility model is given. The process flange includes a flange top plate 1, an annular track 2, an inner support ring plate 3, a flange bottom plate 5, a reinforcing rib plate 7, an annular track stopper 8 and a lifting lug 9. Among them, the flange top plate 1 and the flange bottom plate 5 are arranged correspondingly up and down, and both are annular plate structures; the inner support ring plate 3 is correspondingly welded between the inner circumference of the flange top plate 1 and the flange bottom plate 5; the annular track 2 is correspondingly welded between the outer circumference of the flange top plate 1 and the flange bottom plate 5; the diameter of the inner support ring plate 3 is the same as the inner diameter of the flange top plate 1 and the flange bottom plate 5; the width of the inner support ring plate 3 is consistent with the width of the annular track 2.

[0024] In this embodiment, the surface of the flange top plate 1 is provided with six circumferentially evenly distributed circular arc-shaped process holes 4. The size of the process holes 4 should be appropriate, and sufficient space should be provided so that construction personnel can assemble and disassemble bolts or nuts through the arc-shaped process holes 4; the surface of the flange bottom plate 5 is provided with twenty-four circumferentially evenly distributed bolt holes 6. The hole diameter, center distance, and spacing between adjacent bolt holes of the bolt holes 6 are consistent with the bolt hole parameters of the steel pile top flange. This process flange is connected to the pile top flange through twenty-four sets of bolts and nuts, and after the bolts and nuts are installed, they should be pre-tightened to a sufficient torque to prevent loosening; a rubber gasket is added between the process flange and the pile top flange to prevent collision and damage to the pile top flange during assembly and disassembly.

[0025] Six reinforcing ribs 7 are evenly distributed circumferentially between the flange top plate 1 and the flange bottom plate 5; the upper part, lower part, outer side and inner side of the reinforcing ribs 7 are respectively welded and fixed to the flange top plate 1, the flange bottom plate 5, the annular track 2 and the inner support ring plate 3. According to the weight of the steel pile segment, the size and number of the reinforcing ribs 7 can be flexibly adjusted, and transverse and longitudinal ribs can be added when necessary to ensure the overall strength of the process flange so that the process flange will not be deformed or fall off when it is rotated and used, thereby causing safety and quality accidents.

[0026] In this embodiment, six lifting ears 9 are welded evenly distributed on the upper end surface of the flange top plate 1, which are used to hang buckles and slings and disassemble and assemble the process flange. The number and angle of the lifting ears 9 can be flexibly adjusted according to the needs of assembly, disassembly and transportation of the process flange.

[0027] In this embodiment, annular track stops 8 are provided on both sides of the outer circumference of the annular track 2 to prevent the rollers from being eccentric or displaced during rotation, thereby preventing the steel piles from sliding off in sections.

[0028] The outer diameters of the flange top plate 1 and the flange bottom plate 5 are the same as the outer diameters of the steel pile top flange, and the inner diameters are slightly smaller than the inner diameter of the pile top flange.

[0029] The width of the annular track 2 is slightly larger than the width of the roller of the roller frame. The annular track 2 is placed on the roller of the roller frame and rotates with the roller. The rotation center line of the annular track is the center line of the steel pile. According to the requirements of the welding and coating process, the rotation speed of the roller of the roller frame is adjusted, and then the rotation speed of the process flange and the steel pile is adjusted. When the roller of the roller frame rotates to drive the steel pile to rotate, the annular track 2 should be cleaned in advance, and the flatness and roundness of the annular track 2 should be checked.

[0030] To prevent the process flange from being damaged during use, all welds of the process flange should be subject to visual and nondestructive inspection after production is completed; to prevent damage to the process flange and steel pipe piles, the twenty-four sets of bolts and nuts connecting the process flange and the pile top flange must meet the strength requirements and should be subject to visual and nondestructive inspections regularly; to reduce rust on the process flange and extend its service life, the process flange should be sandblasted and painted for corrosion protection; to prevent deformation of the process flange due to stress during use, the process flange should be modeled and strength verification calculations should be performed.

[0031] The working principle of the utility model is: first, use a crane and a sling to assemble the process flange on one end of the pile top flange of the steel pipe pile segment, and use twenty-four sets of bolts and nuts to install and fix it. A rubber pad needs to be added between the process flange and the pile top flange, and then place one end of the process flange of the steel pipe pile segment on the roller of the roller frame, clean and check the state of the process flange track, and the power roller of the roller frame rotates to drive the process flange to rotate, and then drives the steel pipe pile segment to rotate. The proposal and use of the utility model avoids direct contact between the roller and the outer surface of the steel pipe pile segment pipe section, resulting in damage to the parent material on the surface of the steel pipe pile body; the steel pipe pile top flange segment can directly complete all paint coating operations, which well solves the problems of segment sandblasting and discontinuous coating, avoids secondary repair of segment paint, and improves the coating efficiency of single pile segments and entire piles.

[0032] The utility model can greatly improve the processing efficiency of steel pipe piles, shorten the processing cycle of steel pipe piles, reduce the waste of coating materials, and reduce the processing cost of steel pipe piles.

[0033] Matters not described in detail in this utility model are known technologies.

[0034] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A process flange for closing an offshore wind power monopile foundation, characterized in that: The process flange comprises a flange top plate, an annular track, an inner support ring plate and a flange bottom plate; the flange top plate and the flange bottom plate are arranged correspondingly up and down; The inner support ring plate is fixedly connected between the inner circumference of the flange top plate and the flange bottom plate; the annular track is fixedly connected between the outer circumference of the flange top plate and the flange bottom plate; the surface of the flange top plate is provided with circumferentially evenly distributed process holes; the surface of the flange bottom plate is provided with circumferentially evenly distributed bolt holes.

2. A process flange for closing an offshore wind power monopile foundation according to claim 1, characterized in that: Reinforcement ribs are evenly distributed circumferentially between the flange top plate and the flange bottom plate; the upper part, lower part, outer side and inner side of the reinforcement ribs are respectively welded and fixed to the flange top plate, the flange bottom plate, the annular track and the inner support ring plate.

3. A process flange for closing an offshore wind power monopile foundation according to claim 1, characterized in that: The upper surface of the flange top plate is evenly distributed with lifting ears in the circumferential direction.

4. A process flange for closing an offshore wind power monopile foundation according to claim 1, characterized in that: Annular track stops are arranged on both sides of the outer circumference of the annular track.

5. The process flange for closing an offshore wind power monopile foundation according to claim 1 is characterized in that: The outer diameter of the flange top plate is the same as the outer diameter of the steel pile top flange, and the inner diameter is slightly smaller than the inner diameter of the pile top flange.

6. The process flange for closing an offshore wind power monopile foundation according to claim 1, characterized in that: The width of the annular track is slightly larger than the width of the roller of the roller frame. The annular track is placed on the roller of the roller frame and rotates with the roller. The rotation center line of the annular track is the center line of the steel pile.

7. The process flange for closing an offshore wind power monopile foundation according to claim 1, characterized in that: The process hole is an arc-shaped hole.

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