Floating type overturning system for steel pipe pile and using method of floating type overturning system

Abstract

The invention discloses a steel pipe pile floating type turnover system and a using method thereof.The system comprises a top device or a top device and a bottom device, it can be guaranteed that a steel pipe pile forms a closed structure in the hoisting process by arranging the top device or the top device and the bottom device, and the construction requirement of floating type turnover is met. According to the floating type overturning system for the steel pipe pile and the using method of the floating type overturning system, aiming at construction of a large wind power steel pipe pile hoisted only through a single hook, the large wind power steel pipe pile can be overturned through the buoyancy of the single pile, meanwhile, the system is also suitable for direct hoisting of a small steel pipe pile with the light weight, the overall structure is simple, operation is easy and convenient, and the working efficiency is high.

Description

Technical Field

[0001] The invention belongs to the technical field of offshore construction, and in particular relates to a steel pipe pile floating turnover system and a use method thereof. Background Art

[0002] The foundation piles of offshore wind power are generally transported horizontally to the wind turbine location, so there is a construction link of turning over and hoisting. At present, the turning over techniques of single pile foundation in the construction process of offshore wind power include: turning over and hoisting with two cranes, which requires two floating cranes for construction and is relatively costly; turning over with a turner, which is generally suitable for turning over small piles and requires a turner; if only a single hook is used for construction, the bottom of the pile needs to be placed on the seabed after lifting, and the pile can be turned over because the bottom is fixed due to the friction of the mud surface on the seabed. This method makes the pile below the water surface and subject to a large current load. As wind turbines continue to grow in size and enter the deep sea area, the increase in water depth increases the load of the current on the single pile, and there is also the possibility that the water is too deep and cannot touch the bottom. Summary of the invention

[0003] In order to solve the technical problems existing in the prior art, the object of the present invention is to provide a steel pipe pile floating flipping system and a method of using the same.

[0004] In order to achieve the above purpose and the above technical effect, the technical solution adopted by the present invention is:

[0005] A steel pipe pile floating flipping system comprises a top device or a top device and a bottom device. By arranging the top device or the top device and the bottom device, it is ensured that the steel pipe pile forms a closed structure during the hoisting process, thereby meeting the construction requirements of floating flipping.

[0006] Furthermore, the bottom device includes a cylinder, a baffle I, a bottom sealing plate, a support frame, a water inlet pipe and a baffle II. The baffle I and the bottom sealing plate are respectively fixed at both ends of the cylinder, one end of the water inlet pipe is connected and fixed to the baffle I, and the other end is fixed to the bottom sealing plate. The baffle II is fixed to the outside of the cylinder, and a track is provided inside the cylinder for placing the support frame.

[0007] Furthermore, the cylinder body is a cylindrical structure, the baffle I is a circular structure, and a remote control valve II is provided in the water inlet pipe for controlling the amount of water entering the steel pipe pile.

[0008] Furthermore, the support frame includes a loading plate, a pressure plate and a strut, the strut is connected to the loading plate and the pressure plate by bolts, a roller trolley is arranged on the periphery of the support frame, the roller trolley runs on a track, the strut passes through baffle I, a threaded rod is arranged on baffle I, and the threaded rod passes through the loading plate.

[0009] Furthermore, an airbag I is arranged outside the cylinder, an airbag II is arranged inside the cylinder, and an airbag III is arranged inside the support frame.

[0010] Furthermore, the airbag I and the airbag II are connected via a connecting tube.

[0011] Furthermore, the connecting pipe I passes through the baffle I and is connected to the airbag III, and a manual valve I is provided on the connecting pipe I.

[0012] Furthermore, the connecting pipe II passes through the baffle I and is connected to the airbag I, and the connecting pipe II is provided with a remote control valve I and a pressure gauge.

[0013] The present invention also discloses a method for using a steel pipe pile floating overturning system. For floating overturning and hoisting of heavy weight steel pipe piles, the method comprises the following steps:

[0014] 1) Lifting ears Ⅰ are set on both sides of the steel pipe pile. Wire rope Ⅰ is two annular wire rope loops, and wire rope Ⅱ is a single wire rope with a tail clamp connected to its bottom. Before construction, the stress conditions of each component are calculated in advance, and the appropriate wire rope length is selected to ensure a slight bottom tilt of the steel pipe pile after lifting;

[0015] 2) Install the bottom device:

[0016] Open remote control valve I and manual valve I; inflate airbags I, II and III so that the diameter of airbag I is close to the inner diameter of the bottom of the steel pipe pile; close remote control valve I and manual valve I;

[0017] Lift the bottom device and insert it into the bottom of the steel pipe pile, and adjust the position so that the baffle plate I is close to the bottom of the steel pipe pile;

[0018] Open manual valve Ⅰ and continue to pressurize, observe the pressure gauge on connecting pipe Ⅱ, and stop pressurizing when the preset pressure is reached, and close the valve;

[0019] 3) Install the top device:

[0020] Refer to the installation steps of the bottom device in step 2);

[0021] 4) Lift the steel pipe pile into the sea and slowly lower it. The buoyancy at the bottom of the steel pipe pile will loosen the wire rope and remove the tail sling.

[0022] 5) Open the remote control valve II to allow seawater to enter the steel pipe pile through the water inlet pipe, so that the steel pipe pile slowly stands upright. Control the opening of the remote control valve to control the speed at which water enters the steel pipe pile. In this process, the crane is lifted at the same time to speed up the turning speed of the steel pipe pile.

[0023] 6) Open the remote control valve I, slowly discharge the air in the air bag I, and take out the bottom device;

[0024] 7) After the steel pipe pile is hoisted into place, remove the top device in the same way.

[0025] The present invention also discloses a method for using a steel pipe pile floating overturning system. For the overturning and hoisting of a small weight steel pipe pile, the method comprises the following steps:

[0026] 1) Evenly distributed lifting ears II are set on the baffle I of the top device 1. At this time, the bottom sealing plate needs to increase the diameter to ensure the load on the airbag I during construction. Through calculation, the length of the airbag I is appropriately increased, and an anti-slip structure is set at the contact position between it and the steel pipe pile to ensure sufficient friction;

[0027] 2) Install the top device:

[0028] Open remote control valve I and manual valve I; inflate airbags I, II and III so that the diameter of airbag I 17 is close to the bottom inner diameter of the steel pipe pile 3; close remote control valve I and manual valve I;

[0029] Insert the top device into the top of the steel pipe pile and adjust the position so that the baffle plate I is close to the top of the steel pipe pile. At this time, the steel pipe pile is placed on the pile transport ship;

[0030] Open manual valve Ⅰ and continue to pressurize, observe the pressure gauge on connecting pipe Ⅱ, and stop pressurizing when the preset pressure is reached, and close the valve;

[0031] 3) Install wire ropes, slings and main hooks;

[0032] 4) Steel pipe pile turning over and hoisting, lift the steel pipe pile, and the lifting arm slowly rotates with the turning of the steel pipe pile until the steel pipe pile is completely vertical;

[0033] 5) After the steel pipe pile is hoisted into place, open the remote control valve I, and the air in the air bag I is slowly discharged. After the top device is separated from the steel pipe pile, take out the top device.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] The invention discloses a steel pipe pile floating turning system and a method of using the same. The system is aimed at the construction of large wind power steel pipe piles which are hoisted only by a single hook, so that the piles can be turned by utilizing the buoyancy of the single pile itself. The device is also suitable for direct hoisting of small steel pipe piles which are lighter in weight. The system has a simple overall structure, is easy to operate and has high working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of embodiment 1 of the present invention;

[0037] Figure 2 This is a front view of the top device of Example 1 of the present invention;

[0038] Figure 3This is a front view of the bottom device of Example 1 of the present invention;

[0039] Figure 4 A top view of the bottom device of Example 1 of the present invention;

[0040] Figure 5 This is a schematic structural diagram of a support frame according to Embodiment 1 of the present invention;

[0041] Figure 6 This is a schematic diagram of the structure of Example 2 of the present invention. DETAILED DESCRIPTION

[0042] The present invention is described in detail below so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0043] A brief summary of one or more aspects is given below to provide a basic understanding of these aspects. This summary is not an exhaustive overview of all conceived aspects, and is neither intended to identify the key or critical elements of all aspects nor to define the scope of any or all aspects. Its only purpose is to give some concepts of one or more aspects in a simplified form as a prelude to a more detailed description that will be given later.

[0044] like Figure 1-6 As shown, a steel pipe pile floating flipping system includes a top device 1 or a top device 1 and a bottom device 2. The top device 1 has a similar structure to the bottom device 2, and is mainly used to form a closed structure during the hoisting process of the steel pipe pile 3 with openings at both ends, so as to meet the construction requirements of floating flipping. The top device 1 can cooperate with the bottom device 2, or can be used alone, and the pressure and friction between the piles by the air bags on both sides are fixed to perform direct flip hoisting of light weight steel pipe piles.

[0045] The top assembly 1 includes a cylinder 4, a baffle Ⅰ5, a bottom sealing plate 6, and a support frame 7. The cylinder 4 is a cylindrical structure, and the bottom sealing plate 6 and the baffle Ⅰ5 are respectively fixed to the two ends of the cylinder 4 by bolts. The baffle Ⅰ5 is a circular structure, and rails 11 are arranged inside the cylinder 4, symmetrically arranged around, for placing the support frame 7.

[0046] The bottom device 2 includes a cylinder 4, a baffle plate Ⅰ5, a bottom sealing plate 6, a support frame 7, and a water inlet pipe 8. The cylinder 4 is a cylindrical structure, and the bottom sealing plate 6 and the baffle plate Ⅰ5 are fixed to both ends of the cylinder 4 by bolts. The baffle plate Ⅰ5 is a circular structure, the top of which can be slotted, and is used to match the baffle plate Ⅱ9 to adapt to the installation of the tail tongs 10. The baffle plate Ⅱ9 is fixed to the outside of the cylinder 4 by bolts. The cylinder 4 is provided with rails 11, which are symmetrically arranged around the four sides for placing the support frame 7.

[0047] The support frame 7 includes a loading plate 12, a pressing plate 13, and a support rod 14. The support rod 14 connects the loading plate 12 and the pressing plate 13 by bolts. A roller trolley 15 is provided on the periphery of the support frame 7, and the roller trolley 15 runs on the track 11. The support rod 14 passes through the baffle plate I5. The baffle plate I5 is provided with uniformly distributed threaded rods 51, and the threaded rods 51 pass through the loading plate 12.

[0048] One end of the water inlet pipe 8 is connected and fixed to the baffle Ⅰ5, and the other end is fixed to the bottom sealing plate 6. A remote control valve Ⅱ16 is provided in the water inlet pipe 8 to control the amount of water entering the steel pipe pile 3. The pressure plate 13 and the center of the airbag through which it passes are both opened.

[0049] The cylinder 4 is provided with an airbag I 17 on the outside, an airbag II 18 on the inside, and an airbag III 19 on the inside of the support frame 7. The cylinder 4 is provided with evenly distributed through holes, and the connecting pipe 22 passes through the through holes to connect the airbag I 17 and the airbag II 18. The connecting pipe I 20 passes through the baffle I 5 to connect with the airbag III 19, and the connecting pipe I 20 is provided with a manual valve I. The connecting pipe II 21 passes through the baffle I 5 to connect with the airbag I 17, and the connecting pipe II 21 is provided with a remote control valve I and a pressure gauge.

[0050] Compared with the bottom device 2, the top device 1 of the present invention does not have a water inlet pipe 8 in the middle, does not require holes in the internal structure and the airbag, and does not have a lifting port on the top.

[0051] The steel pipe pile floating flipping system disclosed in the present invention has two pressurizing modes:

[0052] The first method is to inflate the airbag III 19 to drive the support frame 7 to squeeze the airbag II 18 to achieve the purpose of pressurization;

[0053] The second method is to push the support frame 7 to apply pressure by manually tightening the nut on the threaded rod.

[0054] The above two methods can be selected according to the actual situation during the construction process.

[0055] The airbag Ⅰ17 can be selected in various forms according to the construction environment and safety requirements. It can be an integral annular airbag or a split airbag with one split airbag for each connecting pipe.

[0056] Example 1

[0057] For floating hoisting of heavy steel pipe piles:

[0058] 1) Lifting lugs Ⅰ31 are set on both sides of the steel pipe pile 3, the steel wire rope Ⅰ24 is two annular steel wire rope loops, and the steel wire rope Ⅱ25 is a single steel wire rope, and the bottom of the steel wire rope is connected to the tail clamp 10. Before construction, calculate the stress conditions of each component in advance, select the appropriate length of the steel wire rope, and ensure that the bottom of the steel pipe pile 3 is slightly tilted after lifting;

[0059] 2) Install the bottom device:

[0060] Open remote control valve I and manual valve I; inflate airbags I 17, II 18, and III 19 so that the diameter of airbag I 17 is close to the inner diameter of the bottom of the steel pipe pile 3; close remote control valve I and manual valve I;

[0061] The bottom device 2 is hoisted and inserted into the bottom of the steel pipe pile 3, and the position is adjusted so that the baffle I5 is close to the bottom of the steel pipe pile 3;

[0062] Open manual valve I and continue to pressurize, observe the pressure gauge on connecting pipe II 21, and when the preset pressure is reached, stop pressurizing and close the valve;

[0063] 3) Install the top device:

[0064] Refer to the installation steps of the bottom device 2 in step 2);

[0065] 4) Lift the steel pipe pile 3 into the sea and slowly lower it. The buoyancy at the bottom of the steel pipe pile 3 will loosen the wire rope and remove the tail sling.

[0066] 5) Open the remote control valve II to allow seawater to enter the steel pipe pile 3 through the water inlet pipe 8, so that the steel pipe pile 3 slowly stands upright. Control the opening of the remote control valve to control the speed at which water enters the steel pipe pile 3. In this process, the crane is lifted at the same time to speed up the turning speed of the steel pipe pile 3.

[0067] 6) Open the remote control valve I, the air in the air bag I 17 is slowly discharged, and the bottom device 2 is taken out;

[0068] 7) After the steel pipe pile 3 is hoisted into place, the top device 1 is taken out in the same way.

[0069] Example 2

[0070] For turning over and hoisting of small weight steel pipe piles:

[0071] 1) Evenly distributed lifting ears II 32 are set on the baffle I 5 of the top device 1. At this time, the bottom sealing plate 6 needs to increase the diameter to ensure the load on the airbag I 17 during construction. The length of the airbag I 17 can be appropriately increased through calculation, and anti-slip pads and other structures can be set at the contact position between it and the steel pipe pile 3 to ensure sufficient friction;

[0072] 2) Install the top device:

[0073] Open remote control valve I and manual valve I. Inflate airbags I 17, II 18, and III 19 so that the diameter of airbag I 17 is close to the inner diameter of the bottom of the steel pipe pile 3. Close remote control valve I and manual valve I;

[0074] The top device 1 is hoisted and inserted into the top of the steel pipe pile 3, and the position is adjusted so that the baffle Ⅰ5 is close to the top of the steel pipe pile 3. At this time, the steel pipe pile 3 is placed on the pile transport ship 26;

[0075] Open manual valve I and continue to pressurize, observe the pressure gauge on connecting pipe II 21, and when the preset pressure is reached, stop pressurizing and close the valve;

[0076] 3) Install the wire rope 27 and the sling, and hook the main hook 28;

[0077] 4) The steel pipe pile 3 is turned over and hoisted. The steel pipe pile 3 is lifted, and the lifting arm slowly rotates as the steel pipe pile 3 turns over until the steel pipe pile 3 is completely vertical;

[0078] 5) After the steel pipe pile 3 is hoisted in place, the remote control valve I is opened, and the gas in the air bag I 17 is slowly discharged. After the top device 1 is separated from the steel pipe pile 3, the top device 1 is taken out.

[0079] Parts or structures not specifically described in the present invention may adopt existing technologies or existing products and will not be described in detail here.

[0080] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A steel pipe pile floating flipping system, characterized in that: It comprises a top device or a top device and a bottom device. By setting the top device or the top device and the bottom device, it can be ensured that the steel pipe pile forms a closed structure during the hoisting process to meet the construction requirements of floating flipping.

2. A steel pipe pile floating flipping system according to claim 1, characterized in that: The bottom device includes a cylinder, a baffle I, a bottom sealing plate, a support frame, a water inlet pipe and a baffle II. The baffle I and the bottom sealing plate are respectively fixed at both ends of the cylinder, one end of the water inlet pipe is connected and fixed to the baffle I, and the other end is fixed to the bottom sealing plate. The baffle II is fixed to the outside of the cylinder, and a track is provided inside the cylinder for placing the support frame.

3. A steel pipe pile floating flipping system according to claim 2, characterized in that: The cylinder is a cylindrical structure, the baffle I is a circular structure, and a remote control valve II is arranged in the water inlet pipe for controlling the amount of water entering the steel pipe pile.

4. A steel pipe pile floating turnover system according to claim 2, characterized in that: The support frame includes a loading plate, a pressure plate and a strut, the strut is connected to the loading plate and the pressure plate by bolts, a roller trolley is arranged on the periphery of the support frame, the roller trolley runs on a track, the strut passes through baffle I, a threaded rod is arranged on baffle I, and the threaded rod passes through the loading plate.

5. The steel pipe pile floating flipping system according to claim 2, characterized in that: An airbag I is arranged outside the cylinder, an airbag II is arranged inside the cylinder, and an airbag III is arranged inside the support frame.

6. A steel pipe pile floating flipping system according to claim 5, characterized in that: The airbag I and the airbag II are connected via a connecting pipe.

7. The steel pipe pile floating flipping system according to claim 5, characterized in that: The connecting pipe I passes through the baffle plate I and is connected to the air bag III. A manual valve I is arranged on the connecting pipe I.

8. The steel pipe pile floating flipping system according to claim 5, characterized in that: The connecting pipe II passes through the baffle plate I and is connected to the air bag I. The connecting pipe II is provided with a remote control valve I and a pressure gauge.

9. A method for using a steel pipe pile floating flipping system according to any one of claims 1 to 8, characterized in that: For the floating turning over and hoisting of heavy weight steel pipe piles, the method of use comprises the following steps: 1) Lifting ears Ⅰ are set on both sides of the steel pipe pile. Wire rope Ⅰ is two annular wire rope loops, and wire rope Ⅱ is a single wire rope with a tail clamp connected to its bottom. Before construction, the stress conditions of each component are calculated in advance, and the appropriate wire rope length is selected to ensure a slight bottom tilt of the steel pipe pile after lifting; 2) Install the bottom device: Open remote control valve I and manual valve I; inflate airbags I, II and III so that the diameter of airbag I is close to the inner diameter of the bottom of the steel pipe pile; close remote control valve I and manual valve I; Lift the bottom device and insert it into the bottom of the steel pipe pile, and adjust the position so that the baffle plate I is close to the bottom of the steel pipe pile; Open manual valve Ⅰ and continue to pressurize, observe the pressure gauge on connecting pipe Ⅱ, and stop pressurizing when the preset pressure is reached, and close the valve; 3) Install the top device: Refer to the installation steps of the bottom device in step 2); 4) Lift the steel pipe pile into the sea and slowly lower it. The buoyancy at the bottom of the steel pipe pile will loosen the wire rope and remove the tail sling. 5) Open the remote control valve II to allow seawater to enter the steel pipe pile through the water inlet pipe, so that the steel pipe pile slowly stands upright. Control the opening of the remote control valve to control the speed at which water enters the steel pipe pile. In this process, the crane is lifted at the same time to speed up the turning speed of the steel pipe pile. 6) Open the remote control valve I, slowly discharge the air in the air bag I, and take out the bottom device; 7) After the steel pipe pile is hoisted into place, remove the top device in the same way.

10. A method for using a steel pipe pile floating flipping system according to any one of claims 1 to 8, characterized in that: For the turning and hoisting of small weight steel pipe piles, the method of use includes the following steps: 1) Evenly distributed lifting ears II are set on the baffle I of the top device 1. At this time, the bottom sealing plate needs to increase the diameter to ensure the load on the airbag I during construction. Through calculation, the length of the airbag I is appropriately increased, and an anti-slip structure is set at the contact position between it and the steel pipe pile to ensure sufficient friction; 2) Install the top device: Open remote control valve I and manual valve I; inflate airbags I, II and III so that the diameter of airbag I 17 is close to the bottom inner diameter of the steel pipe pile 3; close remote control valve I and manual valve I; Insert the top device into the top of the steel pipe pile and adjust the position so that the baffle plate I is close to the top of the steel pipe pile. At this time, the steel pipe pile is placed on the pile transport ship; Open manual valve Ⅰ and continue to pressurize, observe the pressure gauge on connecting pipe Ⅱ, and stop pressurizing when the preset pressure is reached, and close the valve; 3) Install wire ropes, slings and main hooks; 4) Steel pipe pile turning over and hoisting, lift the steel pipe pile, and the lifting arm slowly rotates with the turning of the steel pipe pile until the steel pipe pile is completely vertical; 5) After the steel pipe pile is hoisted into place, open the remote control valve I, and the air in the air bag I is slowly discharged. After the top device is separated from the steel pipe pile, take out the top device.

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