CN212272463U - Buoyancy tank structure and composite cylinder foundation assembly - Google Patents

Abstract

The utility model relates to a fan basis technical field, concretely relates to flotation tank structure and compound section of thick bamboo basis subassembly. The buoyancy tank structure is adapted to cooperate with a side compartment (21) of a composite barrel foundation (20), comprising: a buoyancy tank (10); the drainage component is arranged on the buoyancy tank (10) and used for draining the buoyancy tank (10) to enable the buoyancy tank structure to float upwards when the drainage component works; the water filling part is arranged on the buoyancy tank (10) so as to fill water into the buoyancy tank (10) to enable the buoyancy tank structure to sink when the water filling part works; wherein, when one of the water discharging component and the water filling component is in work, the other one of the water discharging component and the water filling component is not in work. The technical scheme of the utility model provide a part buoyancy through the flotation tank structure, the haulage of being convenient for has solved the single problem of transportation mode on a compound section of thick bamboo basis among the prior art effectively.

Description

Buoyancy tank structure and composite cylinder foundation assembly

Technical Field

The utility model relates to a fan basis technical field, concretely relates to flotation tank structure and compound section of thick bamboo basis subassembly.

Background

At present, a composite cylinder type foundation is a novel offshore wind turbine foundation type, the composite cylinder type foundation is provided with a top seal and a bottom opening, a honeycomb-shaped cabin dividing plate is arranged inside the composite cylinder type foundation, and the composite cylinder type foundation has the advantages of negative pressure sinking, convenience in leveling and the like.

Among the prior art, compound barrel type basis adopts "a section of thick bamboo back of the body ship" type to transport, and then improves the wet-drag stability of compound barrel type basis, "a section of thick bamboo back of the body ship" is the ship of customization, sets up the recess that holds a compound barrel base in the middle of the hull, and the hull both ends are equipped with the deck. Because the popularization and application of compound shell type basis at the offshore wind farm in many sea areas, and the resource that is applicable to the ship aircraft equipment of "a back of the body ship" is deficient, and offshore wind power project construction period is short in addition, and the single transportation mode on compound shell type basis can't satisfy the requirement gradually, so, need provide a novel transportation mode suitable for compound shell type basis now urgently, can increase the wet stability of dragging the process of compound shell type basis.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a buoyancy tank structure and a composite cylinder foundation assembly for solving the problem of single transportation mode of the composite cylinder foundation in the prior art.

In order to achieve the above object, the utility model provides a buoyancy tank structure is suitable for and cooperates with the side deck on compound section of thick bamboo basis, include: a buoyancy tank; the drainage component is arranged on the buoyancy tank and used for draining water to the buoyancy tank to enable the buoyancy tank structure to float when the buoyancy tank works; the water filling part is arranged on the buoyancy tank so as to fill water into the buoyancy tank to enable the buoyancy tank structure to sink when the buoyancy tank works; wherein, when one of the water discharging component and the water filling component is in work, the other one of the water discharging component and the water filling component is not in work.

Further, be equipped with into business turn over hole on the flotation tank, drainage component includes: the drainage pump is arranged in the buoyancy tank; and one end of the drainage pipeline is connected with the drainage pump, and the other end of the drainage pipeline penetrates out of the inlet and outlet hole.

Furthermore, the buoyancy tank structure also comprises a protection pad, and the protection pad wraps the top wall and the side wall of the buoyancy tank.

Furthermore, the inlet and outlet holes are arranged on the top wall of the floating box, at least part of the drainage pipeline is arranged in the protective pad, and/or the thickness of the protective pad is 0.5 m-1 m.

Further, the diameter of the inlet and outlet hole is 2-4 times of the diameter of the top exhaust hole of the composite cylinder base.

Further, the water filling part includes: the water filling pump is arranged on the outer wall of the buoyancy tank; one end of the water inlet pipeline is connected with the water filling pump, and the other end of the water inlet pipeline extends into the floating box from the inlet and outlet hole.

Further, the water filling pump is arranged on the bottom wall of the buoyancy tank.

Further, the depth of the buoyancy tank is 1.2-1.5 times of the depth of the composite cylinder foundation, and/or the buoyancy tank is of a fan-shaped structure, and/or a distance sensor is arranged at the top of the buoyancy tank.

The utility model also provides a compound section of thick bamboo basis subassembly, including compound section of thick bamboo basis and flotation tank structure, compound section of thick bamboo basis has a plurality of limit cabins, is equipped with the flotation tank structure in the at least part in a plurality of limit cabins, and the flotation tank structure is foretell flotation tank structure.

Further, a plurality of buoyancy tank structures are distributed in an annular array in the center of the composite cylinder foundation.

The utility model discloses technical scheme has following advantage: when the composite cylinder foundation is transported, the buoyancy tank is filled with water through the water filling part, so that the buoyancy tank structure sinks into the water, then the buoyancy tank is drained through the water draining part, so that the buoyancy tank structure floats upwards and enters into a side cabin of the composite cylinder foundation, a composite cylinder foundation assembly is formed, and the composite cylinder foundation assembly is dragged and transported to a sinking position in a wet dragging mode; and then the buoyancy tank is filled with water through the water filling part, so that the buoyancy tank structure sinks and is separated from the composite cylinder foundation, and further the transportation of the composite cylinder foundation is completed. The buoyancy is provided through the buoyancy tank structure, dragging is facilitated, and the problem that the transportation mode of the composite cylinder foundation in the prior art is single is effectively solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 shows a schematic perspective view of the buoyancy tank structure provided by the present invention in cooperation with a composite cylinder foundation;

FIG. 2 shows a schematic front view of the buoyancy tank structure of FIG. 1;

FIG. 3 shows a schematic top view of the buoyancy tank structure of FIG. 2;

FIG. 4 shows a schematic front view of a pad of the buoyancy tank structure of FIG. 1;

fig. 5 shows a schematic top view of the pad of fig. 4;

fig. 6 shows a perspective view of the composite cartridge base of fig. 1.

Description of reference numerals:

10. a buoyancy tank; 11. an inlet and outlet hole; 20. a composite barrel foundation; 21. a side compartment; 22. a top vent; 23. a side plate; 24. a top plate; 25. an inner deckboard; 30. a pad.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, the buoyancy tank structure of the present embodiment is adapted to cooperate with the side tank 21 of the composite tube foundation 20, and includes: a buoyancy tank 10, a drainage component and a water filling component; the drainage component is arranged on the buoyancy tank 10 to drain the buoyancy tank 10 to enable the buoyancy tank structure to float when the drainage component works; the water filling part is arranged on the buoyancy tank 10 so as to fill water into the buoyancy tank 10 to enable the buoyancy tank structure to sink when the water filling part works; wherein, when one of the water discharging component and the water filling component is in work, the other one of the water discharging component and the water filling component is not in work.

By applying the buoyancy tank structure of the embodiment, when the composite cylinder foundation is transported, the buoyancy tank 10 is filled with water through the water filling part, so that the buoyancy tank structure sinks into water, then the buoyancy tank 10 is drained through the drainage part, so that the buoyancy tank structure floats upwards and enters into a side cabin of the composite cylinder foundation, a composite cylinder foundation assembly is formed, and the composite cylinder foundation assembly is dragged and transported to a sinking position in a wet dragging mode; then the buoyancy tank 10 is filled with water through the water filling part, so that the buoyancy tank structure sinks and is separated from the composite cylinder foundation, and further the transportation of the composite cylinder foundation is completed. The buoyancy is provided through the buoyancy tank structure, dragging is facilitated, and the problem that the transportation mode of the composite cylinder foundation in the prior art is single is effectively solved.

In the present embodiment, as shown in fig. 2 and 3, the buoyancy tank 10 is provided with an inlet and outlet hole 11, and the drainage member includes: a drain pump and a drain pipeline, the drain pump being disposed in the buoyancy tank 10; one end of the drainage pipeline is connected with the drainage pump, and the other end of the drainage pipeline penetrates out of the inlet and outlet hole 11. The water in the floating box can be drained through the drainage pipeline by opening the drainage pump. The drainage component has simple structure, convenient use and low cost. The drain pump is provided on the inner bottom wall of the float chamber 10. As an alternative embodiment, the drain pump is provided on the inner side wall or the inner top wall of the pontoon, and the water inlet of the drain pump may need to be connected to a pipe, the end of which remote from the drain pump is submerged in the water.

In this embodiment, as shown in fig. 4 and 5, the buoyancy tank structure further includes a pad 30, the pad 30 wraps the top wall and the side wall of the buoyancy tank 10, and the pad 30 can absorb the collision capacity, so as to avoid the situation that the composite cylindrical foundation is bent and damaged due to direct collision between the buoyancy tank 10 and the top plate, the side plates, and the inner deck plate of the composite cylindrical foundation during wet towing transportation. Specifically, the thickness of the pad 30 is 0.5m to 1 m.

In this embodiment, access hole 11 is provided on the top wall of buoyancy tank 10, and at least part of the drain line is provided in pad 30. The other end of the drainage pipeline penetrates out of the protection pad, so that water can be conveniently drained. As an alternative embodiment, the access aperture 11 is provided in a side wall of the buoyancy tank 10.

In this embodiment, the water filling part includes: a water filling pump and a water inlet pipeline, wherein the water filling pump is arranged on the outer wall of the buoyancy tank 10; one end of the water inlet pipeline is connected with the water filling pump, and the other end of the water inlet pipeline extends into the floating box 10 from the inlet and outlet hole 11. The water outside the buoyancy tank 10 can be pumped into the buoyancy tank 10 through the water inlet pipeline by opening the water filling pump, and then the buoyancy tank 10 is filled with water, so that the buoyancy tank structure can sink. The water filling component has a simple structure and is convenient for filling the buoyancy tank with water. The water inlet pipeline and the water discharge pipeline share one inlet and outlet hole 11, so that the structure of the buoyancy tank is simplified. Of course, two inlet and outlet holes 11 can be arranged, one inlet and outlet hole 11 is matched with the water inlet pipeline, the other inlet and outlet hole 11 is matched with the drainage pipeline, at the moment, the two inlet and outlet holes 11 can be arranged on the top wall, the bottom wall or the side wall of the floating box, and when the inlet and outlet holes 11 are arranged on the bottom wall, the inlet and outlet holes 11 and the pipeline need to be sealed, so that the water leakage is prevented.

In this embodiment, the diameter of the inlet and outlet holes 11 is 2-4 times the diameter of the top exhaust hole 22 of the composite cylinder base 20, and a plurality of drainage pipelines and water inlet pipelines can be arranged to rapidly pump water inside and outside the buoyancy tank.

Specifically, the water filling pump is arranged on the bottom wall of the buoyancy tank 10, the buoyancy tank structure is placed into water, and the water filling pump is started to fill water. As an alternative, the water pump is arranged on the side wall or the top wall of the buoyancy tank, and the water inlet of the water pump needs to be connected with a pipeline which penetrates out of the bottom of the pad.

In this embodiment, the depth of buoyancy tank 10 is 1.2 ~ 1.5 times of the depth of compound section of thick bamboo basis 20, is convenient for set up the connection structure who is connected with the hawser on the curb plate of buoyancy tank, prevents that connection structure and side hold from taking place the condition of interfering. Other dimensions of buoyancy tank 10 are smaller than the dimensions of the side compartments of the composite barrel foundation.

In the present embodiment, the side compartments are fan-shaped structures, and the buoyancy tank 10 is fan-shaped, so that the shape of the buoyancy tank 10 is adapted to the shape of the side compartments.

In this embodiment, the top of the buoyancy tank 10 is provided with a distance sensor. Distance sensor sends the distance signal that detects between the top of flotation tank structure and the roof of compound section of thick bamboo basis 20 for the controller, and whether the controller control drain pump is closed, is 0 when the distance that detects between the top of flotation tank structure and the roof of compound section of thick bamboo basis 20, and the drain pump is closed to the controller, judges the top of flotation tank structure and the roof contact of compound section of thick bamboo basis 20 through distance sensor, and is more convenient.

The utility model also provides a compound section of thick bamboo basis subassembly, including compound section of thick bamboo basis 20 and flotation tank structure, compound section of thick bamboo basis 20 has a plurality of limit cabins 21, is equipped with the flotation tank structure in the at least part in a plurality of limit cabins 21, and the flotation tank structure is foretell flotation tank structure.

In this embodiment, a plurality of buoyancy tank structures are distributed in an annular array in the center of the composite cylinder foundation 20.

As shown in fig. 6, the composite cylinder foundation 20 includes a top plate 24, an annular side plate 23, and a plurality of inner partition plates 25, the top exhaust holes are disposed on the top plate 24, a cavity surrounded by the top plate 24 and the side plate 23 is divided into a middle compartment and six side compartments 21 by the plurality of inner partition plates 25, and the middle compartment is hexagonal. Of course, the number of the side compartments may be four, and the number of the side compartments is not limited thereto.

The method for transporting the composite cylinder foundation by using the buoyancy tank structure comprises the following steps:

step S10: filling the buoyancy tanks 10 with water through the water filling parts of the plurality of buoyancy tank structures so as to enable the buoyancy tank structures to sink into the water;

step S20: placing a plurality of buoyancy tank structures below the composite cylinder foundation 20;

step S30: the buoyancy tanks 10 are drained through the drainage parts of the buoyancy tank structures, and the buoyancy tank structures float upwards and enter the side cabins 21 of the corresponding composite cylinder bases 20 to form composite cylinder base assemblies;

step S40: wet dragging the composite cylinder base component to a sinking position;

step S50: the buoyancy tank 10 in the composite cylinder foundation assembly is filled with water by the water filling means, and the buoyancy tank structure sinks and disengages from the composite cylinder foundation 20.

When the composite cylinder foundation is transported, the buoyancy tank 10 is filled with water through the water filling part, so that the buoyancy tank structure sinks into the water, then the buoyancy tank 10 is drained through the water draining part, so that the buoyancy tank structure floats upwards and enters into a side cabin of the composite cylinder foundation, a composite cylinder foundation assembly is formed, and the composite cylinder foundation assembly is dragged and transported to a sinking position in a wet dragging mode; then the buoyancy tank 10 is filled with water through the water filling part, so that the buoyancy tank structure sinks and is separated from the composite cylinder foundation, and further the transportation of the composite cylinder foundation is completed. The buoyancy is provided through the buoyancy tank structure, dragging is facilitated, and the problem that the transportation mode of the composite cylinder foundation in the prior art is single is effectively solved.

If the composite drum base 20 is submerged closer to the dock, the buoyancy tank structure is submerged in the dock basin where it is loaded into the sidecar in step S10, which is a simpler process.

Since the size of the composite drum base is relatively large, in step S20, the composite drum base 20 is lifted above the plurality of buoyancy tank structures by the crane device and the top vent holes 22 of the composite drum base 20 are opened, thereby reducing the labor intensity of the transportation personnel. Specifically, the composite drum foundation 20 is hoisted from the dock into the dock basin by a crane apparatus. When the composite cylinder base 20 enters water, air in the composite cylinder base 20 is exhausted through the top exhaust hole 22, so that the top of the buoyancy tank structure is conveniently contacted with the top of the composite cylinder base.

In step S20, a plurality of pontoon structures are attached to the port fixture by cables such that each pontoon structure is positioned directly below its corresponding sidecar 21. Can fix the position of flotation tank structure like this, prevent that the flotation tank structure from taking place the condition of removing in pier harbor pond, guarantee the location accuracy.

The following steps are also included between step S20 and step S30: step S21: each buoyancy tank structure enters the side compartment 21 corresponding to the composite tube foundation 20 when the composite tube foundation is lowered to the bottom of the composite tube foundation and enters water, and the mooring rope is detached from the buoyancy tank structure.

The following steps are also included between step S21 and step S30: step S22: when the composite cylinder foundation 20 is placed to the crane equipment and is not stressed, the connecting device for connecting the composite cylinder foundation 20 and the crane equipment is detached, so that the connecting device is detached conveniently, and the detachment is more labor-saving.

In step S30, after the top of the buoyancy tank structure is in contact with the top plate of the composite cylinder foundation 20, the drainage of the buoyancy tank 10 is stopped. Set up distance sensor at the flotation tank structure, distance sensor will detect the distance signal between the roof of flotation tank structure and compound section of thick bamboo basis 20 and send for the controller, and whether controller control drain pump is closed, is 0 when the distance between the roof that detects the top of flotation tank structure and compound section of thick bamboo basis 20, and the drain pump is closed to the controller, judges the roof contact of the top of flotation tank structure and compound section of thick bamboo basis 20 through distance sensor, and is more convenient.

In step S40, the composite drum base assembly is wet towed to a submerged position by a tow vessel. Specifically, one end of the mooring rope is connected to the connecting structure on the outer wall of the composite cylinder foundation assembly, the other end of the mooring rope is connected to the tugboat, and the composite cylinder foundation assembly is wet supported to a sinking position through the tugboat. In particular, the connection structure is a connection hook.

In this embodiment, a plurality of buoyancy tank structures are distributed in an annular array in the center of the composite cylinder foundation 20. Specifically, there are six side compartments 21, three buoyancy tank structures, and three buoyancy tank structures are provided one side compartment 21 apart. Of course, six pontoon structures may be provided.

If the sinking position of the composite cylinder foundation 20 is far away from the wharf and the sinking position is a shallow water area, the draft of the on-site transport ship is large, the composite cylinder foundation cannot be berthed at the sinking position, and further the composite cylinder foundation cannot be dry-towed to the sinking position, the cost is considered that the composite cylinder foundation and the buoyancy tank structure can be dry-towed from the wharf to the deeper water area near the sinking position through the on-site transport ship, and then the composite cylinder foundation is wet-towed to the sinking position, specifically, the method further comprises the following steps before the step S10: in step S01, the composite tubular foundation 20 and the plurality of pontoon structures are dry-lifted from the dock to the wet-towing position by the vessel, and the composite tubular foundation 20 and the plurality of pontoon structures are suspended into the sea water by the crane apparatus on the vessel and the top vent 22 of the composite tubular foundation 20 is closed, so that draft of the composite tubular foundation is minimized. The ship is a field transportation ship, the length of the field transportation ship is more than 100 meters, and the length of the tugboat is about 10 m.

In step S10, the pontoon structure is submerged into the sea water at a wet tow location, wherein the water depth at the wet tow location is deeper than the water depth at the submerged location. And when the top of the buoyancy tank structure is lower than the bottom of the composite cylinder foundation, stopping filling water into the buoyancy tank.

In step S30, the plurality of pontoon structures are towed by the tug boat directly below their corresponding sidecars 21. The floating box structure is positioned through the tugboat, and the positioning is convenient. Specifically, three tugboats are connected with each pontoon structure through cables, and each pontoon structure is towed to a position right below the corresponding side tank 21 by the three tugboats and is fixed.

From the above description, there are two transportation methods of the composite drum foundation, and the specific operation process is as follows:

1. if the job site on compound barrel type basis is close with the pier distance, can choose for use compound barrel type basis wet dragging transportation mode from the cost, specifically do:

hoisting a plurality of buoyancy tank structures into a wharf harbor basin from a wharf through crane equipment, and then filling water into each buoyancy tank structure to enable the buoyancy tank structures to sink into the water;

hoisting the composite cylinder foundation above the plurality of buoyancy tank structures through crane equipment and opening the top exhaust holes 22 of the composite cylinder foundation 20;

connecting a plurality of pontoon structures to the port fixture by cables such that each pontoon structure is positioned directly below its corresponding sidecar 21;

slowly lowering the composite cylinder type foundation until the bottom of the composite cylinder type foundation 20 enters water, and at the moment, enabling each buoyancy tank structure to enter the corresponding side cabin 21, and detaching the mooring rope from the buoyancy tank structure.

Continuing to sink the composite cylindrical foundation until the crane equipment is not stressed, and removing a connecting device for connecting the composite cylindrical foundation and the crane equipment;

the buoyancy tanks 10 are drained through the drainage parts of the buoyancy tank structures, so that the buoyancy tank structures gradually float upwards and enter the side cabins 21 of the corresponding composite cylinder bases 20 to form composite cylinder base assemblies, and the drainage of the buoyancy tanks 10 is stopped until the tops of the buoyancy tank structures are in contact with the top plates of the composite cylinder bases 20;

after the composite cylinder foundation assembly is wet towed to a sinking position through a towing boat, closing the top exhaust hole of the composite cylinder foundation;

the buoyancy tank 10 in the composite cylinder foundation assembly is filled with water through the water filling member so that the buoyancy tank structure gradually sinks and separates from the composite cylinder foundation 20.

Continuing to fill water to the flotation tank structure and sinking until the top of flotation tank structure is less than compound barrel-type basis bottom, pull the flotation tank structure by the tug and shift out the below in the limit cabin on compound barrel-type basis, carry out the drainage through drainage component to flotation tank 10, make a plurality of flotation tank structures come up gradually, retrieve the flotation tank structure.

2. If the construction site of the composite cylindrical foundation is far away from the wharf and is a shallow water area, the site transport ship has large draught and cannot be anchored at the sinking position, and further the composite cylindrical foundation cannot be dry-towed and transported to the sinking position, wherein the sinking position is located at the construction site. Considering from the cost and needing to drag the composite cylinder type foundation to a deeper water area near a construction site through a site transportation ship, and then dragging the composite cylinder type foundation to a shallow water area through a composite cylinder type foundation, the method specifically comprises the following steps:

the composite cylinder foundation 20 and the plurality of buoyancy tank structures are supported from the wharf to a deeper water area close to the sinking position through a field transportation ship;

then, the composite cylinder foundation 20 and the plurality of buoyancy tank structures are hoisted into seawater from the on-site transport ship through crane equipment on the on-site transport ship, and the top exhaust hole 22 of the composite cylinder foundation 20 is closed, so that the draught of the composite cylinder foundation is minimum;

filling water into each buoyancy tank structure to enable the buoyancy tank structures to sink into the water, and dragging the buoyancy tank structures to be right below side cabins of the composite cylindrical foundation by using a tugboat when the tops of the buoyancy tank structures are lower than the bottom of the composite cylindrical foundation;

draining the buoyancy tanks 10 through the drainage parts of the buoyancy tank structures to enable the buoyancy tank structures to gradually float upwards and enter the side cabins 21 of the corresponding composite cylinder bases 20 to form composite cylinder base assemblies, stopping draining the buoyancy tanks 10 until the tops of the buoyancy tank structures are in contact with the top plates of the composite cylinder bases 20, and opening the top exhaust holes of the composite cylinder bases;

after the composite cylinder foundation assembly is wet towed to a sinking position through a towing boat, closing the top exhaust hole of the composite cylinder foundation;

the buoyancy tank 10 in the composite cylinder foundation assembly is filled with water through the water filling member so that the buoyancy tank structure gradually sinks and separates from the composite cylinder foundation 20.

Continuing to fill water to the flotation tank structure and sinking until the top of flotation tank structure is less than compound barrel-type basis bottom, pull the flotation tank structure by the tug and shift out the below in the limit cabin on compound barrel-type basis, carry out the drainage through drainage component to flotation tank 10, make a plurality of flotation tank structures come up gradually, retrieve the flotation tank structure.

Above-mentioned transportation mode on compound section of thick bamboo basis provides partly buoyancy through the flotation tank structure, and wet process operation of dragging improves conveying efficiency, transportation reliability, reduces energy consumption and cost for the popularization and application on compound section of thick bamboo type basis improves the stability of compound section of thick bamboo type basis wet in-process of dragging, but flotation tank structure reuse, economic nature is high.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (10)

1. A pontoon structure adapted to cooperate with a sidecar (21) of a composite drum foundation (20), comprising:

a buoyancy tank (10);

a drainage member provided on the buoyancy tank (10) to drain the buoyancy tank (10) to float the buoyancy tank structure when it is operated;

the water filling component is arranged on the buoyancy tank (10) and used for filling water into the buoyancy tank (10) to enable the buoyancy tank structure to sink when the buoyancy tank works;

wherein one of the water discharging part and the water filling part is in operation, and the other of the water discharging part and the water filling part is not in operation.

2. A buoyancy tank structure according to claim 1, wherein the buoyancy tank (10) is provided with an access hole (11), and the drainage member comprises:

a drain pump disposed in the float chamber (10);

and one end of the drainage pipeline is connected with the drainage pump, and the other end of the drainage pipeline penetrates out of the inlet and outlet hole (11).

3. The pontoon structure according to claim 2, further comprising a protective mat (30), the protective mat (30) wrapping the top and side walls of the pontoon (10).

4. A buoyancy tank structure according to claim 3, wherein the access hole (11) is provided in the top wall of the buoyancy tank (10), at least part of the drainage pipe is provided in the pad (30), and/or the pad (30) has a thickness of 0.5m to 1 m.

5. The pontoon structure according to claim 2, wherein the diameter of the access holes (11) is 2-4 times the diameter of the top exhaust holes (22) of the composite cylinder foundation (20).

6. The pontoon structure according to claim 2, wherein the water filling member comprises:

the water filling pump is arranged on the outer wall of the buoyancy tank (10);

and one end of the water inlet pipeline is connected with the water filling pump, and the other end of the water inlet pipeline extends into the floating box (10) from the inlet and outlet hole (11).

7. The pontoon structure according to claim 6, wherein the charge pump is arranged on the bottom wall of the pontoon (10).

8. The pontoon structure according to claim 1, wherein the depth of the pontoon (10) is 1.2-1.5 times the depth of the composite cylinder foundation (20), and/or wherein the pontoon (10) is of a fan-shaped structure, and/or wherein the top of the pontoon (10) is provided with a distance sensor.

9. A composite drum base assembly, comprising a composite drum base (20) and a pontoon structure, the composite drum base (20) having a plurality of side compartments (21), the pontoon structure being provided in at least some of the plurality of side compartments (21), the pontoon structure being as claimed in any one of claims 1 to 8.

10. The composite drum base assembly according to claim 9, wherein a plurality of said pontoon structures are distributed in an annular array in the center of the composite drum base (20).

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