Anti-scouring solidified soil stirring device for offshore wind power foundation

Abstract

The utility model relates to the technical field of offshore wind power installation, in particular to an offshore wind power foundation anti-scouring solidified soil stirring device which comprises a stirring pool and a stirring assembly, the stirring pool is arranged on a transport ship and used for containing raw materials of solidified soil, and the stirring assembly is used for stirring the raw materials of the solidified soil; the stirring assembly comprises a bucket, a stirring shaft, stirring blades and a driving part; the bucket is used for being connected with an excavator, and a plurality of first circulation holes allowing slurry to penetrate through are formed in the bucket. The stirring blades are fixedly arranged on the stirring shaft, the stirring shaft and the stirring blades are arranged in the bucket, and the driving part is fixedly arranged on the outer wall of the bucket and used for driving the stirring shaft to rotate. According to the device, in the moving process of the stirring assembly in the stirring pool, the liquid mixture can penetrate through the first circulating holes in the bucket, and the stirring blades can further stir blocky soil in slurry, so that sufficient mixing of the soil and water is further promoted, and the mixing uniformity of solidified soil raw materials is improved.

Description

Technical Field

[0001] This application relates to the field of offshore wind power installation technology, and in particular to a mixing device for anti-erosion and solidification soil of offshore wind power foundation. Background Technology

[0002] Offshore wind power is a technology that uses offshore wind resources to generate electricity. The core of offshore wind power equipment is the offshore wind turbine. Before installation, an offshore wind turbine foundation (usually a steel pipe pile foundation) needs to be constructed at sea. The top of the steel pipe pile is equipped with a flange, and the steel pipe pile is fixedly connected to the wind turbine tower through the flange.

[0003] To reduce seawater erosion of the soil surrounding the steel pipe piles and improve their stability, it is necessary to fill the area around the piles with solidified soil to resist seawater erosion. Workers mix soil, water, solidifying agent, and cement into a liquid mixture on a transport ship; this mixture is then pumped to the perimeter of the steel pipe piles. After solidification and hardening, the solidified soil is formed to resist seawater erosion of the surrounding silt.

[0004] In existing technologies, workers transport the raw materials for solidified soil (soil, water, solidifying agent, and cement) to a mixing tank, where they use an excavator's bucket to mix the various materials. However, in actual production, the mixing frequency and amplitude of the bucket are limited, resulting in relatively uneven mixing of the raw materials and a large volume of solidified soil fill, which can easily lead to localized weak areas. Utility Model Content

[0005] In order to improve the uniformity of the mixing of solidified soil raw materials and improve the quality of solidified soil filling, this application provides a mixing device for solidified soil for offshore wind power foundation erosion prevention.

[0006] This application provides a mixing device for erosion-resistant and solidified soil for offshore wind power foundations, which adopts the following technical solution:

[0007] A mixing device for erosion-resistant and solidified soil of offshore wind power foundations includes a mixing tank and a mixing assembly. The mixing tank is located on a transport vessel and is used to hold raw materials for solidification. The mixing assembly is used to mix the raw materials for solidification. The mixing assembly includes a bucket, a mixing shaft, mixing blades, and a drive component. The bucket is used to connect to an excavator and has several first flow holes for mud to pass through. The mixing blades are fixed on the mixing shaft, and the mixing shaft and the mixing blades are located inside the bucket. The bucket has mounting holes for installing the mixing shaft, and the mixing shaft is rotatably connected to the bucket. The drive component is fixed on the outer peripheral wall of the bucket and is used to drive the mixing shaft to rotate.

[0008] By adopting the above technical solution, workers transfer soil, water, solidifying agent, and cement into the mixing tank. An excavator drives the mixing assembly to move within the tank, thoroughly mixing the various materials of the solidified soil into a liquid mixture. During the movement of the mixing assembly within the tank, the liquid mixture can pass through the first flow hole on the bucket, providing the mixing assembly with a stirring and turbulence effect on the various raw materials, further ensuring the uniformity of the solidified soil mixture. Once the bucket is filled with soil, the drive unit drives the mixing blades to rotate, further agitating the lumpy soil in the slurry to further promote thorough mixing of the soil and water, improving the uniformity of the solidified soil mixture.

[0009] Optionally, the mixing device further includes a turbulence-inducing component, which includes a gas delivery hose and a gas delivery steel pipe; one end of the gas delivery hose is connected to the gas delivery steel pipe, and the other end of the gas delivery hose is used to connect to an air pump; the gas delivery steel pipe is fixed to the outer peripheral wall of the bucket; and the turbulence-inducing component is used to deliver gas into the mixing tank.

[0010] By adopting the above technical solution, when the bucket is mixing various raw materials in the mixing tank, the turbulence component delivers gas into the mixing tank. This flowing gas turbulences the solid raw materials in the liquid mixture, dispersing them into the liquid mixture and further improving the uniformity of the mixture of various raw materials in the solidified soil. Simultaneously, for areas difficult for the bucket to reach, the gas delivered by the turbulence component has a turbulence effect on those areas, further improving the uniformity of the solidified soil raw material mixing.

[0011] Optionally, a plurality of the turbulence-disrupting components are provided, and the air outlets of the plurality of turbulence-disrupting components are arranged facing the outer periphery of the bucket.

[0012] By adopting the above technical solution and setting multiple turbulence components to increase the area of ​​the turbulence zone, the uniformity of the mixing of the solidified soil raw materials is further improved, thereby improving the quality of the solidified soil filling.

[0013] Optionally, the lower edge plate of the bucket is a flat plate, and when the lower edge plate is set horizontally, at least one of the turbulence components has an air outlet direction that is obliquely downward.

[0014] By adopting the above technical solution, the air outlet direction of the turbulence component is set obliquely downward, so that the gas can blow up the solid raw materials at the bottom of the mixing tank, thereby further improving the uniformity of the mixing of the solidified soil raw materials.

[0015] Optionally, the diameter of the gas conveying steel pipe decreases along the gas flow direction.

[0016] By adopting the above technical solution, the diameter of the gas conveying steel pipe is reduced, thereby increasing the gas outlet speed, improving the turbulence effect of the gas on various raw materials in the liquid mixture, and improving the uniformity of stirring and mixing of various raw materials.

[0017] Optionally, the stirring blades are provided with a plurality of second flow holes.

[0018] By adopting the above technical solution, the cutting effect of the mixing blade on the soil can be improved by starting a second flow hole on the mixing blade, so as to promote the full mixing of soil and water.

[0019] Optionally, along the length of the gas conveying steel pipe, the gas conveying steel pipe is provided with a number of vent holes spaced apart.

[0020] By adopting the above technical solution, the gas conveying steel pipe is provided with several vent holes at intervals to increase the turbulence range in the turbulence component, so as to further improve the uniformity of mixing of various raw materials.

[0021] Optionally, the diameter of the vent holes decreases along the gas flow direction.

[0022] By adopting the above technical solution, the diameter of the vent holes decreases along the gas flow direction to improve the uniformity of bubbles emerging from the vent holes, so that various raw materials are evenly distributed in the liquid mixture.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Workers transfer soil, water, solidifying agent, and cement into the mixing tank. The excavator drives the mixing assembly to move within the tank, thoroughly mixing the various materials of the solidified soil into a liquid mixture. During the movement of the mixing assembly within the tank, the liquid mixture can pass through the first flow hole on the bucket, providing the mixing assembly with a stirring and turbulence effect on the various raw materials, further ensuring the uniformity of the solidified soil mixture. After the bucket is filled with soil, the drive unit drives the mixing blades to rotate, further agitating the lumpy soil in the slurry to further promote thorough mixing of the soil and water, improving the uniformity of the solidified soil mixture.

[0025] 2. When the bucket is mixing various raw materials in the mixing tank, the turbulence component delivers gas into the mixing tank. This flowing gas turbulence disperses the solid materials in the liquid mixture, further improving the uniformity of the mixture. Simultaneously, for areas difficult for the bucket to reach, the gas delivered by the turbulence component has a turbulence effect, further enhancing the uniformity of the soil material mixing.

[0026] 3. The diameter of the gas conveying steel pipe decreases, which can increase the gas outlet speed, improve the turbulence effect of the gas on various raw materials in the liquid mixture, and improve the uniformity of stirring and mixing of various raw materials. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the offshore wind power foundation in Example 1.

[0028] Figure 2 This is a schematic diagram of the stirring device in Example 1.

[0029] Figure 3 This is a schematic diagram of the stirring assembly in Example 1.

[0030] Figure 4 This is a schematic diagram of the stirring assembly in Example 1.

[0031] Figure 5 This is a schematic diagram of the stirring assembly in Example 2.

[0032] Figure 6 This is a schematic diagram of the stirring assembly in Example 3.

[0033] Explanation of reference numerals in the attached drawings: 1. Steel pipe pile foundation; 2. Stabilized soil; 3. Transport ship; 4. Mixing tank; 5. Mixing assembly; 51. Bucket; 511. First flow hole; 52. Mixing shaft; 53. Mixing blades; 531. Second flow hole; 54. Drive component; 6. Turbulence assembly; 61. Gas delivery hose; 62. Gas delivery steel pipe; 621. Vent hole; 7. Excavator. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1 -6 provides further detailed information about this application.

[0035] Example 1

[0036] Reference Figure 1 After the construction of the offshore wind power foundation (steel pipe pile foundation 1) is completed, a layer of solidified soil 2 needs to be blown around the outer perimeter of the steel pipe pile foundation 1 to reduce the scouring of the surrounding silt by seawater and improve the stability of the steel pipe pile foundation 1. The thickness of the solidified soil 2 around the steel pipe pile foundation 1 should not be less than 0.8m. Within the scouring protection zone, the solidified soil 2 should be blown evenly, with an average thickness of about 0.5m above the seabed surface. The radius of the solidified soil 2 around the outer perimeter of the steel pipe pile foundation 1 is 18m.

[0037] The solidified soil 2 is produced in the mixing tank 4 on the transport ship 3. Workers first mix soil and water to form a slurry; then, a curing agent and cement are added to the slurry, and the curing agent, cement, and slurry are thoroughly mixed to form a liquid mixture; finally, the liquid mixture is pumped to the outer perimeter of the steel pipe pile foundation 1, where it solidifies and hardens to form the solidified soil 2. In this embodiment, the ratio of solidified soil 2 is cement:curing agent:soil:water = 136:16:589:736. The reason for first mixing soil and water to form a slurry, and then adding the curing agent and cement, is that soil is difficult to disperse in water, so it is necessary to first mix the soil and water to ensure the soil is evenly dispersed in the water.

[0038] Reference Figure 2 This application discloses a mixing device for erosion-resistant and solidified soil of offshore wind power foundations. The mixing device includes a mixing tank 4, a mixing component 5, and a turbulence-disrupting component 6. The mixing tank 4 is installed on a transport vessel 3 and is used to contain the raw material of the solidified soil 2. The mixing component 5 and the turbulence-disrupting component 6 are used to mix the raw material of the solidified soil 2.

[0039] Reference Figure 3 The mixing assembly 5 includes a bucket 51, a mixing shaft 52, mixing blades 53, and a drive component 54. The bucket 51 is connected to the excavator 7 and has several first flow holes 511 for mud to pass through. The mixing blades 53 are fixed to the mixing shaft 52, and the mixing shaft 52 and mixing blades 53 are disposed inside the bucket 51. The bucket 51 has mounting holes for the mixing shaft 52, and the mixing shaft 52 is rotatably connected to the bucket 51. The mixing blades 53 have several second flow holes 531. The drive component 54 is fixed to the outer peripheral wall of the bucket 51 and is used to drive the mixing shaft 52 to rotate. In this embodiment, the drive component 54 is a hydraulic motor that can operate underwater, and the hydraulic motor is connected to an external hydraulic pump.

[0040] Reference Figure 4 The turbulence-disrupting component 6 includes a gas delivery hose 61 and a gas delivery steel pipe 62; one end of the gas delivery hose 61 is connected to the gas delivery steel pipe 62, and the other end of the gas delivery hose 61 is used to connect to an air pump; the gas delivery steel pipe 62 is welded to the outer peripheral wall of the bucket 51; the turbulence-disrupting component 6 is used to deliver gas to the mixing tank 4.

[0041] Reference Figure 4In this embodiment, several turbulence components 6 are provided, and the air outlets of these components 6 are arranged facing the outer periphery of the bucket 51. The lower edge plate of the bucket 51 is a straight plate. When the lower edge plate is horizontally arranged, at least one turbulence component 6 has its air outlet direction angled downwards. By providing multiple turbulence components 6, the area of ​​the turbulence region is increased, further improving the uniformity of the mixing of the raw materials of the solidified soil 2. The downward angled air outlet direction of the turbulence components 6 facilitates the blowing of solidified raw materials at the bottom of the mixing tank 4 by the gas, thereby improving the uniformity of the distribution of various raw materials in the solidified soil 2 and improving the filling quality of the solidified soil 2.

[0042] The implementation principle of the erosion-resistant and solidified soil mixing device for offshore wind power foundations in this application embodiment is as follows:

[0043] Reference Figures 2 to 4 Workers transfer soil and water into the mixing tank 4. The excavator 7 drives the mixing component 5 to move within the mixing tank 4. The water can pass through the first flow hole 511 on the bucket 51 to provide the mixing component 5 with a mixing and turbulence effect on the soil, thereby improving the uniformity of soil distribution in the water. After the bucket 51 is filled with soil, the drive component 54 drives the mixing blades 53 to rotate. The mixing blades 53 further mix the lumpy soil in the slurry, thereby further promoting the thorough mixing of soil and water and improving the uniformity of the raw material mixture of the solidified soil 2.

[0044] Reference Figure 4 When the bucket 51 mixes various raw materials in the mixing tank 4, the turbulence component 6 supplies gas into the mixing tank 4, thereby using the flowing gas to turbulent the soil and disperse it into the liquid mixture. When the gas is introduced into the mixing tank 4, it forms bubbles and rises to the liquid surface. These bubbles generate strong eddies during their ascent, causing intense mixing, dispersion, and shearing of the liquid. This mixing method effectively eliminates agglomeration in the liquid, achieving a uniform distribution of soil in the water.

[0045] Reference Figure 4 Meanwhile, for areas that are difficult for the bucket 51 to reach, the gas delivered by the turbulence component 6 has a turbulence effect on the area to further solidify the uniformity of the soil 2 raw material mixing.

[0046] Example 2

[0047] The difference between Example 2 and Example 1 lies in the following:

[0048] Reference Figure 5 Referring to the figure, the diameter of the gas conveying steel pipe 62 decreases along the gas flow direction; thereby increasing the gas outlet speed, improving the turbulence effect of the gas on various raw materials in the liquid mixture, and improving the uniformity of stirring and mixing of various raw materials.

[0049] Example 3

[0050] The difference between Example 3 and Example 1 is as follows:

[0051] Reference Figure 6 Along the length of the gas conveying steel pipe 62, a plurality of vent holes 621 are spaced apart, with the diameter of the vent holes 621 decreasing progressively. The spaced vent holes 621 in the gas conveying steel pipe 62 increase the turbulence range in the turbulence component 6; the decreasing diameter of the vent holes 621 improves the uniformity of bubbles emanating from the vent holes 621, enhancing the uniformity of the turbulence of the bubbles on the various raw materials of the solidified soil 2, thus ensuring that the various solid raw materials are evenly distributed in the liquid.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A mixing device for erosion-resistant and solidified soil for offshore wind power foundations, characterized in that: The equipment includes a mixing tank (4) and a mixing assembly (5). The mixing tank (4) is mounted on a transport vessel (3) and is used to hold the raw material of the solidified soil (2). The mixing assembly (5) is used to mix the raw material of the solidified soil (2). The mixing assembly (5) includes a bucket (51), a mixing shaft (52), mixing blades (53), and a drive unit (54). The bucket (51) is used to connect to an excavator (7), and the bucket (51) has several openings for mud to pass through. A flow hole (511); the stirring blade (53) is fixed on the stirring shaft (52), the stirring shaft (52) and the stirring blade (53) are disposed inside the bucket (51), the bucket (51) is provided with a mounting hole for the stirring shaft (52) to be installed, the stirring shaft (52) and the bucket (51) are rotatably connected; the driving member (54) is fixed on the outer peripheral wall of the bucket (51), and the driving member (54) is used to drive the stirring shaft (52) to rotate.

2. The offshore wind power foundation erosion-resistant solidification soil mixing device according to claim 1, characterized in that: The stirring device also includes a turbulence component (6), which includes a gas delivery hose (61) and a gas delivery steel pipe (62); one end of the gas delivery hose (61) is connected to the gas delivery steel pipe (62), and the other end of the gas delivery hose (61) is used to connect to an air pump. The gas delivery steel pipe (62) is fixed on the outer peripheral wall of the bucket (51). The turbulence component (6) is used to deliver gas to the stirring tank (4).

3. The offshore wind power foundation erosion-resistant solidification soil mixing device according to claim 2, characterized in that: The turbulence component (6) is provided in a plurality of units, and the air outlets of the plurality of turbulence components (6) are arranged facing the outer periphery of the bucket (51).

4. The offshore wind power foundation erosion-resistant and solidified soil mixing device according to claim 3, characterized in that: The lower edge plate of the bucket (51) is a flat plate. When the lower edge plate is set horizontally, at least one of the turbulence components (6) has an air outlet direction that is obliquely downward.

5. The offshore wind power foundation erosion-resistant solidification soil mixing device according to claim 2, characterized in that: The diameter of the gas conveying steel pipe (62) decreases along the gas flow direction.

6. The offshore wind power foundation erosion-resistant and solidified soil mixing device according to claim 1, characterized in that: The stirring blade (53) has several second flow holes (531).

7. The offshore wind power foundation erosion-resistant and solidified soil mixing device according to claim 1, characterized in that: Along the length of the gas conveying steel pipe (62), the gas conveying steel pipe (62) is provided with a plurality of vent holes (621) spaced apart.

8. The offshore wind power foundation erosion-resistant solidification soil mixing device according to claim 7, characterized in that: Along the direction of gas flow, the diameter of the vent (621) decreases.

Images