Water plane adjusting device, barrel type foundation and barrel type foundation sinking installation method

Abstract

The invention discloses a waterplane adjusting device, a barrel type foundation and a barrel type foundation sinking installation method.The waterplane adjusting device is used for the barrel type foundation, the barrel type foundation comprises a base and a tower column vertically arranged on the base, and the waterplane adjusting device comprises an adjusting ring; the average density of the adjusting ring is lower than the density of water, a ring hole is formed in the adjusting ring, the adjusting ring can be movably arranged on the tower column in a sleeving mode through the ring hole, an air bag is further arranged on the inner side of the adjusting ring, the air bag is connected with an air valve, and after the air bag is inflated through the air valve, the air bag abuts against the tower column. And the adjusting ring and the tower column are relatively fixed through friction force. According to the technical scheme, the sinking installation stability of the barrel type foundation can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power generation, and in particular to a waterplane regulating device, a barrel foundation and a method for sinking and installing the barrel foundation. Background Art

[0002] Wind energy resources are clean and renewable energy. Wind power generation is one of the power generation methods in the new energy field with mature technology, the best scale development conditions and commercial development prospects. As wind power technology matures, the capacity of single units continues to increase, and the cost of power generation is greatly reduced, offshore wind power has become a new field of wind power development with great potential, showing broad development prospects.

[0003] The cylindrical foundation of offshore wind power is a basic structure used for offshore wind turbines. It is usually composed of a large cylindrical structure, including a base at the bottom and a tower column at the top. It is installed on the seabed to provide stable support for the towering wind turbines and to reduce the various loads on the wind turbines.

[0004] When installing a barrel foundation at sea, its verticality, plane position and other parameters must be controlled extremely accurately. The offshore construction environment is complex and greatly affected by factors such as wind and waves. Even a small installation deviation may have a significant impact on the subsequent stress performance of the entire foundation. For example, if the verticality deviation is too large, eccentric stress will occur when bearing the horizontal force of the ocean, which may cause the barrel foundation to capsize. Summary of the invention

[0005] The main purpose of the present invention is to propose a barrel foundation, aiming to improve the stability of the barrel foundation sinking and installation.

[0006] To achieve the above object, the waterplane adjustment device proposed in the present invention is used for a barrel foundation, wherein the barrel foundation comprises a base and a tower column vertically arranged on the base, and is characterized in that it comprises:

[0007] An adjusting ring, wherein the average density of the adjusting ring is lower than the density of water, a ring hole is provided inside the adjusting ring, and the adjusting ring can be movably mounted on the tower column through the ring hole, an air bag is also provided on the inner side of the adjusting ring, and the air bag is connected to an air valve, when the air bag is inflated through the air valve, the air bag abuts against the tower column, so that the adjusting ring and the tower column are relatively fixed through friction.

[0008] Optionally, the waterplane adjustment device also includes a plurality of slide rails, which are installed on the tower column and arranged at intervals along the circumference of the tower column and extend in the up and down directions. A plurality of sliders are provided on the inner side of the adjustment ring corresponding to the plurality of slide rails, and the adjustment ring is slidably installed on the tower column through the sliders and the slide rails.

[0009] Optionally, the adjustment ring includes a plurality of installation segments, each of the installation segments is curved in an arc shape, and the plurality of installation segments are connected end to end to form a ring-shaped adjustment ring, and any two adjacent installation segments can be detachably installed together.

[0010] Optionally, each of the slide rails is detachably mounted on the tower column by means of threaded fasteners.

[0011] Optionally, each of the installation segments is made of metal, and a sealed cavity is provided inside each of the installation segments.

[0012] Optionally, there are three installation segments, and an airbag is provided on the inner side of each installation segment.

[0013] Optionally, the number of the slide rails is at least twice the number of the mounting segments, and each of the mounting segments can be slidably mounted on two of the slide rails.

[0014] The present invention also proposes a cylindrical foundation, including a cylindrical foundation body and a waterplane adjustment device as described above, wherein the cylindrical foundation body includes a base and a tower column, wherein the tower column is vertically arranged on the base, and the adjustment ring can be movably mounted on the tower column.

[0015] The present invention also provides a method for sinking and installing a profile foundation, comprising the following steps:

[0016] Step 1: Provide a waterplane adjustment device, the waterplane adjustment device comprising an adjustment ring and a plurality of slide rails, arrange the plurality of slide rails on the tower column of the cylindrical foundation body, so that the plurality of slide rails are distributed at intervals along the circumference of the tower column and extend in the up-down direction, and the adjustment ring is sleeved on the tower column and slidably mounted on the slide rails;

[0017] Step 2: transporting the barrel foundation and the waterplane adjustment device to an installation point by means of an installation vessel;

[0018] Step 3: The barrel foundation is sunk and installed. The barrel foundation slowly sinks. When the adjustment ring contacts the water surface, it floats on the water surface, that is, the adjustment ring moves upward relative to the barrel foundation.

[0019] Step 4: When the stability of the barrel foundation is poor during the sinking process, fix the adjustment ring to the barrel foundation body through the fixing device, and then continue the sinking installation.

[0020] Optionally, after step 4, the following steps are further included:

[0021] Step 5: cancel the fixation of the adjusting ring by the fixing device, and remove the adjusting ring from the slide rail, so that the adjusting ring can be reused for the uninstalled barrel foundation.

[0022] Optionally, after step 6: further comprising the following steps:

[0023] Step 7: Disassemble the slide rail from the tower column so that the slide rail can be reused for the uninstalled barrel foundation.

[0024] The technical solution of the present invention is to set an adjustment ring with an average density lower than the density of water. The adjustment ring can be sleeved on the tower column part of the cylindrical foundation body through the internal ring hole, and an air bag is also provided on the inner side of the adjustment ring. The air bag is connected to an air valve. When the air bag is inflated through the air valve, the air bag will abut against the tower column, so that the adjustment ring and the tower column are relatively fixed through friction. In this way, before the installation of the cylindrical foundation body, the adjusting ring falls to the lowest end of the tower column due to gravity. When the cylindrical foundation body is sunk and installed, the base first contacts the water surface, and then as the cylindrical foundation body sinks, the tower column and the adjusting ring contact the water surface. Before the tower column sinks below the water surface, the adjusting ring will float on the water surface because the density of the adjusting ring is lower than the density of water. When the installation stability is not enough, the air bag can be inflated. The air bag will abut against the tower column due to expansion, so that the adjusting ring and the tower column are relatively fixed through friction, thereby increasing the waterline area of ​​the cylindrical foundation body and making the cylindrical foundation have better stability. As the cylindrical foundation sinks and becomes more stable, the air bag can be deflated and inflated to control the fixed position of the adjusting ring in the cylindrical foundation, so that the cylindrical foundation can sink stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention 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 only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 It is a structural schematic diagram of an embodiment of a waterplane regulating device of the present invention;

[0027] Figure 2 for Figure 1 Exploded view of the middle adjustment ring;

[0028] Figure 3 for Figure 1 Schematic diagram of the structure in which the mid-waterline surface adjustment device is installed on the cylindrical foundation body;

[0029] Figure 4 for Figure 3 A schematic diagram of the structure in which the middle adjustment ring slides to the lower end of the slide rail;

[0030] Figure 5 for Figure 3A schematic diagram of the structure in which the middle adjustment ring slides to the upper end of the slide rail;

[0031] Figure 6 for Figure 1 A schematic diagram of the structure of the mounting buckle and the slide rail;

[0032] Figure 7 for Figure 6 The enlarged view of point A in the middle;

[0033] Figure 8 The present invention is a flow chart of an embodiment of a method for sinking and installing a barrel foundation.

[0034] Description of the reference numerals: 10, water plane adjustment device; 11, adjustment ring; 111, installation segment; 112, slider; 12, slide rail; 121, guide groove; 13, air bag; 20, cylindrical base body; 21, base; 22, tower column; 30, fixing structure; 40, installation buckle

[0035] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] The present invention provides a waterplane regulating device for a cylindrical foundation body. The cylindrical foundation body comprises a base and a tower column vertically arranged on the base.

[0040] In the embodiment of the present invention, Figures 1 to 7 As shown, the waterplane regulating device 10 includes an adjusting ring 11, the average density of the adjusting ring 11 is lower than the density of water, a ring hole is provided inside the adjusting ring 11, and the adjusting ring 11 can be movably mounted on the tower column 22 through the ring hole, and an air bag 13 is also provided on the inner side of the adjusting ring 11, and the air bag 13 is connected to an air valve. When the air bag 13 is inflated through the air valve, the air bag 13 abuts against the tower column 22, so that the adjusting ring 11 and the tower column 22 are relatively fixed through friction.

[0041] Specifically, before the cylindrical foundation body 20 is sunk and installed, the adjusting ring 11 will slide to the bottom position of the tower column 22 due to gravity. During the process of sinking and installing the cylindrical foundation body 20 and sinking it below the water surface, the adjusting ring 11 will float on the water surface because its average density is lower than the density of water. That is, the adjusting ring 11 will move upward relative to the tower column 22 after contacting the water surface. The air bag 13 can be inflated through the air valve to make the air bag 13 abut against the tower column 22, so that the adjusting ring 11 and the tower column 22 are relatively fixed through friction, thereby increasing the waterline area of ​​the cylindrical foundation body 20 and allowing the cylindrical foundation to sink stably.

[0042] The technical solution of the present invention is to set an adjustment ring 11 with an average density lower than the density of water. The adjustment ring 11 can be sleeved on the tower column 22 part of the cylindrical base body 20 through the internal ring hole, and an air bag 13 is also provided on the inner side of the adjustment ring 11. The air bag 13 is connected to an air valve. When the air bag 13 is inflated through the air valve, the air bag 13 will abut against the tower column 22, so that the adjustment ring 11 and the tower column 22 are relatively fixed through friction. In this way, before the installation of the cylindrical foundation body 20, the adjusting ring 11 falls to the lowest position of the tower column 22 due to gravity. When the cylindrical foundation body 20 is sunk and installed, the base 21 first contacts the water surface, and then as the cylindrical foundation body 20 sinks, the tower column 22 and the adjusting ring 11 contact the water surface. Before the tower column 22 sinks below the water surface, because the density of the adjusting ring 11 is lower than the density of water, the adjusting ring 11 will float on the water surface. When the installation stability is not enough, the air bag 13 can be inflated. The air bag 13 will abut against the tower column 22 due to expansion, so that the adjusting ring 11 and the tower column 22 are relatively fixed through friction, thereby increasing the waterline area of ​​the cylindrical foundation body 20, so that the cylindrical foundation has better stability. As the cylindrical foundation sinks and becomes more stable, the air bag 13 can be deflated and inflated to control the fixed position of the adjusting ring 11 in the cylindrical foundation, so that the cylindrical foundation can sink stably.

[0043] In some embodiments, the waterplane adjustment device 10 further includes a plurality of slide rails 12, which are installed on the tower column 22 and arranged at intervals along the circumference of the tower column 22, and extend in the up-down direction, so as to ensure that the support force received by the adjustment ring 11 in all directions is more uniform, and a plurality of sliders 112 are provided on the inner side of the adjustment ring 11 corresponding to the plurality of slide rails 12, and the adjustment ring 11 is slidably installed on the tower column 22 through the sliders 112 and the slide rails 12. Specifically, the plurality of slide rails 12 are arranged at intervals along the circumference of the tower column 22, so that the adjustment ring 11 is stably installed, and when the cylindrical foundation is sunk and installed, the movement of the adjustment ring 11 on the tower column 22 is more stable, and each slide rail 12 extends up and down, playing a guiding role, so that the adjustment ring 11 can only move up and down relative to the tower column 22 when it moves, and the adjustment ring 11 is prevented from rotating relative to the cylindrical foundation body 20 during the movement, so that the movement of the adjustment ring 11 is more stable and smooth.

[0044] In some embodiments, the adjustment ring 11 includes a plurality of installation segments 111, each installation segment 111 is curved in an arc shape, and the plurality of installation segments 111 are connected end to end to form a ring-shaped adjustment ring 11, and any two adjacent installation segments 111 are detachably installed together. Specifically, if the adjustment ring 11 is an integrated type, the volume and weight are relatively large, so the transportation and installation are difficult. The split and detachable adjustment ring 11 is more convenient to transport after disassembly, and each installation segment 111 can be transported to the construction site for assembly, which greatly reduces the difficulty of transportation and installation.

[0045] In some embodiments, each slide rail 12 is detachably mounted on the tower column 22 by means of threaded fasteners. Specifically, after the installation of the barrel foundation is completed, the adjustment ring 11 and the slide rail 12 can be disassembled, recycled, and installed on other barrel foundation bodies 20 to be installed, thereby reducing costs.

[0046] In some embodiments, each installation segment 111 is made of metal, and a sealed cavity is provided inside each installation segment 111. Specifically, when the material of the installation segment 111 is metal, the adjustment ring 11 has high strength and corrosion resistance, can adapt to the harsh conditions of the marine environment, and the sealed cavity can ensure that the installation segment 111 has high buoyancy. Further, the material of the installation segment 111 can be steel or aluminum alloy. When the material of the installation segment 111 is steel, the adjustment ring 11 has high strength, and when it is subjected to the impact of seawater, it can ensure the structural stability of the waterline surface adjustment device. When the material of the installation segment 111 is aluminum alloy, the weight of the adjustment ring 11 is lighter, and the buoyancy is greater, and when the sinking installation work is performed, the installation state of the barrel foundation can be guaranteed to be stable. In addition, the material of the installation segment 111 and the size of the cavity can be set in a targeted manner according to different models of barrel foundation bodies 20 and different installation environments. In addition, in other embodiments, the material of the installation segment 111 is light wood or carbon fiber composite material.

[0047] In some embodiments, the number of the mounting segments 111 is three, and an air bag 13 is provided inside each mounting segment 111. Specifically, when the number of the mounting segments 111 is three, the convenience of installation is ensured, and the stability of the structure is ensured, and an air bag 13 is provided inside each mounting segment 111, so that each mounting segment 111 can be independently fixed to the tower column 22, thereby improving the reliability of the entire adjustment ring 11.

[0048] In some embodiments, the number of the slide rails 12 is at least twice the number of the mounting segments 111, and each mounting segment 111 can be slidably mounted on two slide rails 12. Specifically, each mounting segment 111 can be slidably mounted on two slide rails 12, and compared with a design in which one mounting segment 111 corresponds to one slide rail 12, such a structure is more stable and can effectively prevent the adjustment ring 11 from tilting or shaking during the sliding process.

[0049] In some embodiments, an inflating device and a deflation device are provided in the cavity of the installation segment 111, and the air valve of the airbag 13 is located on a side close to the installation segment 111 and is connected to the inflating device and the deflation device. In this way, the inflating device and the deflation device are installed by using the cavity in the installation segment 111, and the installation segment 111 can protect the inflating device and the deflation device to prevent the inflating device and the deflation device from being corroded by seawater, and there is no need to set up additional installation space and installation structure for installing the inflating device and the deflation device outside, so that the structure of the barrel foundation is simpler.

[0050] In some embodiments, the tower column 22 is provided with a plurality of slide rail mounting structures, which are spaced apart along the circumference of the tower column 22, and each slide rail mounting structure includes a plurality of mounting buckles 40 arranged up and down, and a slot is provided at the outer end of the mounting buckle 40, in which the slide rail 12 is mounted and fixed to the mounting buckle 40 by a threaded fastener. Specifically, such a plurality of slide rail mounting structures are spaced apart along the circumference of the tower column 22, corresponding to the distribution of the slide rail 12, providing a stable mounting position for the slide rail 12, and the slide rail 12 can be securely fixed to the mounting buckle 40 by the threaded fastener, and the slide rail 12 can be removed from the buckle by only removing the threaded fastener, so that the installation and removal of the slide rail 12 are relatively convenient. Furthermore, the mounting buckle 40 is welded and fixed to the tower column 22.

[0051] In some embodiments, the slide rail 12 is a dovetail groove rail, and a slider 112 corresponding to the dovetail groove rail is provided on the inner side of each installation segment 111, and the installation segment 111 is installed in the guide groove 121 of the dovetail groove rail through the slider 112, and the guide groove 121 runs through the upper end of the dovetail groove rail. Specifically, a slider 112 corresponding to the dovetail groove rail is provided on the inner side of each installation segment 111. The shape and size of the slider 112 match the dovetail groove rail, so that the installation segment 111 can slide stably on the rail. In addition, the slider 112 can be inserted into the guide groove 121 from the upper end of the dovetail groove rail, which facilitates the installation of the adjustment ring 11. When disassembly is required, the installation segment 111 can also be taken out from the upper end of the guide groove 121, which improves the convenience of installation and disassembly of the adjustment ring 11.

[0052] In some embodiments, the adjustment ring 11 includes a fixing structure 30, and the fixing structure 30 includes a plurality of first mounting plates and a plurality of second mounting plates. The first mounting plate is fixed to the head end of each mounting segment 111, and the second mounting plate is fixed to the tail end. The positions of the first mounting plate and the second mounting plate match each other. When the multiple mounting segments 111 are connected head to tail in a ring shape, each first mounting plate is stacked together with a corresponding second mounting plate, and a plurality of threaded fasteners fix the corresponding stacked first mounting plates and second mounting plates to fix any two adjacent mounting segments 111. Specifically, this fixing method is firm and reliable, and is easy to install and disassemble. When preparing to install a barrel foundation at the bottom, the multiple mounting segments 111 can be conveniently installed together through the fixing structure 30 to form a complete adjustment ring 11, and after the barrel foundation is installed at the bottom, the threaded fasteners can be conveniently loosened to disassemble the adjustment ring 11.

[0053] The present invention also proposes a barrel foundation, such as Figures 1 to 7 As shown, the cylindrical foundation includes a cylindrical foundation body 20 and a waterplane adjustment device 10. The specific structure of the waterplane adjustment device 10 refers to the above embodiment. Since the present cylindrical foundation adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the cylindrical foundation body 20 includes a base 21 and a tower column 22 vertically arranged on the base 21. When in use, the adjustment ring 11 can be movably mounted on the tower column 22, and the air bag 13 can be inflated through the air valve, so that the adjustment ring 11 and the tower column 22 are relatively fixed.

[0054] The invention provides a barrel foundation sinking and installation method.

[0055] like Figure 8 As shown, the barrel foundation installation method includes the following steps:

[0056] S10: Provide a waterplane adjustment device 10, the waterplane adjustment device 10 comprising an adjustment ring 11 and a plurality of slide rails 12, the plurality of slide rails 12 are arranged on a tower column 22 of a cylindrical foundation body 20, so that the plurality of slide rails 12 are distributed at intervals along the circumference of the tower column 22 and extend in the up-down direction, the adjustment ring 11 is sleeved on the tower column 22 and slidably mounted on the slide rails 12;

[0057] S20: transporting the barrel foundation and the waterplane adjustment device 10 to the installation point by means of an installation vessel;

[0058] S30: The barrel foundation is sunk and installed. The barrel foundation slowly sinks. When the adjusting ring 11 contacts the water surface, it floats on the water surface, that is, the adjusting ring 11 moves upward relative to the barrel foundation.

[0059] S40: When the stability of the barrel foundation is poor during the sinking process, the adjusting ring is fixed to the barrel foundation body by a fixing device, and then the sinking installation is continued.

[0060] In some embodiments, after the barrel foundation is sunk to the bottom, the following steps are included:

[0061] S50: cancel the fixing of the adjusting ring 11 by the fixing device, and remove the adjusting ring 11 from the slide rail 12, so that the adjusting ring 11 can be reused for the unmounted barrel foundation.

[0062] In some embodiments, after the adjusting ring 11 is removed from the slide rail 12, the following steps are further included:

[0063] S60: Disassemble the slide rail 12 from the tower column 22 so that the slide rail 12 can be reused for the uninstalled barrel foundation.

[0064] In some embodiments, the fixing device includes a plurality of air bags 13, the plurality of air bags 13 are distributed on the inner side of the adjusting ring 11, each air bag 13 is provided with an air valve, each air valve is connected to an inflation device and a deflation device, and S40 includes the following steps:

[0065] When the adjusting ring 11 moves to the uppermost end of the slide rail 12 , the inflating device inflates the airbag 13 through the air valve, so that the airbag 13 expands until it abuts against the tower column 22 .

[0066] Specifically, compared with setting a fixing pin structure on the adjusting ring 11 to pass through the tower column 22 to fix the adjusting ring 11 to the tower column 22, the inflating device is set to inflate the airbag 13, and the adjusting ring 11 and the tower column 22 are fixed by friction, avoiding the need to set an additional jack structure for matching the fixing pin on the tower column 22, and reducing the molding and processing steps of the tower column 22. In addition, the airbag 13 can be deflated by the deflation device, thereby eliminating the fixation of the adjusting ring 11 to the tower column 22, and the fixing and removal of the adjusting ring 11 are more convenient.

[0067] In addition, in other embodiments, the fixing device includes a plurality of fixing pins and a driving member distributed on the inner side of the adjustment ring 11, and a socket is provided for each fixing pin corresponding to the outer periphery of the tower column 22. When the adjustment ring 11 moves to the uppermost end of the slide rail 12, the driving member drives the fixing pin to be inserted into the socket to limit the relative movement between the adjustment ring 11 and the tower column 22.

[0068] In some embodiments, the cylindrical foundation is provided with a sensor and an electronic control device. The sensor, the inflation device and the deflation device are all connected to the electronic control device. The sensor is used to detect the relative position of the cylindrical foundation and the water surface. When the sensor detects that the tower column 22 is about to sink below the water surface, the electronic control device directly triggers the inflation device to charge the airbag 13. Compared with manual inflation, the inflation device responds faster and inflates the airbag 13 more quickly.

[0069] In some embodiments, the airbag 13 is not provided, and a limiting structure is provided at the periphery of the upper end of the tower column 22. When the adjusting ring 11 moves to the upper end of the tower column 22, the adjusting ring 11 abuts against the lower end of the limiting structure.

[0070] It is worth noting that the cylindrical foundation sinking and installation method proposed in the present invention is also applicable to assembling the cylindrical foundation body 20 and the wind turbine tower together for installation.

[0071] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A waterplane adjustment device for a barrel foundation, the barrel foundation comprising a base and a tower column vertically arranged on the base, characterized in that: include: An adjusting ring, wherein the average density of the adjusting ring is lower than the density of water, a ring hole is provided inside the adjusting ring, and the adjusting ring can be movably mounted on the tower column through the ring hole, an air bag is also provided on the inner side of the adjusting ring, and the air bag is connected to an air valve, when the air bag is inflated through the air valve, the air bag abuts against the tower column, so that the adjusting ring and the tower column are relatively fixed through friction.

2. The waterplane adjustment device according to claim 1, characterized in that: The waterplane adjustment device also includes a plurality of slide rails, which are installed on the tower column and arranged at intervals along the circumference of the tower column and extend in the up-down direction. A plurality of sliders are provided on the inner side of the adjustment ring corresponding to the plurality of slide rails, and the adjustment ring is slidably installed on the tower column through the sliders and the slide rails.

3. The waterplane adjustment device according to claim 2, characterized in that: The adjusting ring comprises a plurality of installation segments, each of which is curved in an arc shape, and the plurality of installation segments are connected end to end to form a ring-shaped adjusting ring, and any two adjacent installation segments can be detachably installed together; And / or, each of the slide rails is detachably mounted on the tower column via a threaded fastener.

4. The waterplane adjustment device according to claim 3, characterized in that: The material of each installation segment is metal, and a sealed cavity is provided inside each installation segment.

5. The waterplane adjustment device according to claim 3, characterized in that: The number of the installation sections is three, and an airbag is arranged on the inner side of each installation section.

6. The waterplane adjustment device according to claim 2, characterized in that: The number of the slide rails is at least twice the number of the mounting segments, and each mounting segment can be slidably mounted on two of the slide rails.

7. A cylindrical foundation, comprising a cylindrical foundation body and a waterplane adjustment device according to any one of claims 1 to 6, characterized in that: The cylindrical basic body comprises a base and a tower column, wherein the tower column is vertically arranged on the base, and the adjusting ring is movably sleeved on the tower column.

8. A method for sinking and installing a barrel foundation, characterized in that: The following steps are involved: Provided is a waterplane adjustment device, comprising an adjustment ring and a plurality of slide rails, the plurality of slide rails being arranged on a tower column of a cylindrical foundation body, so that the plurality of slide rails are distributed at intervals along the circumference of the tower column and extend in the up-down direction, the adjustment ring being sleeved on the tower column and slidably mounted on the slide rails; Transporting the barrel foundation and the waterplane adjustment device to an installation point by means of an installation vessel; The cylindrical foundation is sunk and installed so that the cylindrical foundation slowly sinks. When the adjusting ring contacts the water surface, it floats on the water surface, that is, the adjusting ring moves upward relative to the cylindrical foundation body; When the stability of the barrel foundation is poor during the sinking process, the adjusting ring is fixed to the barrel foundation body by a fixing device, and then the sinking installation is continued.

9. The barrel foundation sinking and installation method according to claim 8, characterized in that: After the barrel foundation sinks to the bottom, the following steps are included: The fixing of the adjusting ring by the fixing device is cancelled, and the adjusting ring is disassembled from the slide rail, so that the adjusting ring can be reused for the uninstalled barrel foundation.

10. The barrel foundation sinking and installation method according to claim 9, characterized in that: After the adjusting ring is removed from the slide rail, the method further comprises the following steps: The slide rail is disassembled from the tower column so that the slide rail can be reused for the uninstalled barrel foundation.

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