Pipe sinking device

Abstract

The utility model belongs to the technical field of immersed tubes, and discloses an immersed tube device, two ends of an immersed tube are provided with water inlet valves, the immersed tube device comprises a hoisting mechanism and a built-in buoy, the hoisting mechanism comprises a plurality of hangers and cranes, the hangers are arranged on the immersed tube, the hangers and the cranes are arranged in a one-to-one correspondence mode, the cranes are located on two banks and / or the water surface, and the built-in buoy is arranged in the immersed tube. The built-in float bowls are arranged in the immersed tube, each built-in float bowl comprises a plurality of float bowls and connecting pieces, the connecting pieces are detachably connected between every two adjacent float bowls, each float bowl is in a hollow cylindrical shape, and each float bowl is provided with a water inlet valve and an exhaust valve. According to the immersed tube device, a plurality of hangers are welded on the surface of an immersed tube, and cranes in one-to-one correspondence with the hangers are arranged on the two banks and the water surface to provide hanging force for the immersed tube; the built-in buoy is placed in the immersed tube, the immersed tube is sunk into the foundation trench by means of buoyancy of the built-in buoy and a crane with small lifting force, the number of sinking procedures is small, the construction period is shortened, and the influence on shipping economy is small.

Description

Technical Field

[0001] The utility model relates to the technical field of immersed tubes, in particular to an immersed tube device. Background Art

[0002] In areas where crane ship resources are limited, a hundred-ton crane ship is unable to reach the site due to the limitation of the ship's box, making it difficult to sink a nearly thousand-ton cross-river pipeline into the foundation trench as a whole.

[0003] At present, the submerged tube is usually sunk by using a submerged tube device with an external buoy. This device sinks the tube with the help of a combination of airbags and steel buoys. The airbags need to be removed during the tube sinking process, and the removal of the airbags cannot be synchronized due to the influence of the number of motor boats and personnel. They can only be removed one by one, which takes a long time. The waterway needs to be closed for 2-3 days, which has a certain impact on the local shipping economy.

[0004] Therefore, it is urgent to design a immersed tube device to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a pipe sinking device to solve the technical problem that it takes a long time to sink a pipe when a crane vessel is limited and the pipe sinking device with an external buoy is used.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The immersed tube device has water inlet valves at both ends of the immersed tube, including:

[0008] A hoisting mechanism, comprising a hoisting hook and a hoist, wherein a plurality of the hoists are provided, and the plurality of the hoists are provided on the immersed tube, and the hoists are provided in a one-to-one correspondence with the hoists, and the hoists are located on both banks and / or on the water surface; and

[0009] The built-in float is arranged inside the float. The built-in float includes a float and a connecting piece. There are several floats. The connecting piece is detachably connected between two adjacent floats. The float is in the shape of a hollow cylinder. A water inlet valve and an exhaust valve are arranged on the float.

[0010] Preferably, both ends of the buoy are provided with ear seats, and the connecting piece comprises:

[0011] A chain, wherein the chain comprises a chain ring, wherein a plurality of chain rings are provided, and the plurality of chain rings are sequentially interlocked and connected, and the chain rings located at both ends of the chain are connected to the corresponding ear seats.

[0012] Preferably, the connecting piece further comprises:

[0013] A shackle is provided with one or two shackles, and the shackle is selectively provided on one end or both ends of the chain and connected to the ear seat.

[0014] Preferably, the connecting piece further comprises:

[0015] A swivel is selectively arranged between adjacent chain rings.

[0016] Preferably, two swivels are provided on each chain, and the two swivels are respectively close to two ends of the chain.

[0017] Preferably, the ear seat is located at the center of the end surface of the buoy.

[0018] Preferably, the air inlet valve and the air exhaust valve are both arranged at the same end of the buoy.

[0019] Preferably, at least two of the hanging weights are located on the peripheral side of the end of the submerged tube, and the remaining hanging weights are arranged on the peripheral side of the buoy at intervals along the axial direction of the buoy.

[0020] The beneficial effects of the utility model are as follows: a plurality of lifting weights are welded on the surface of the submerged tube, and cranes corresponding to the lifting weights are arranged on both banks and on the water surface to provide lifting force for the submerged tube; built-in buoys are placed inside the submerged tube, and connecting pieces between two adjacent buoys connect the buoys in series, and the submerged tube is sunk into the base trench by means of the buoyancy of the built-in buoys and the crane with low lifting force.

[0021] During the process of sinking the pipe, first, put the pipe into the water, and the pipe floats on the water surface by the buoyancy of the buoy. Then, open the water inlet valves at both ends of the pipe, fill the pipe with water, and the pipe gradually sinks from floating on the water surface to being fully filled with water. After being fully filled with water, the pipe is balanced in the water by the lifting force. At this time, release the lifting handle and lower the pipe into the base trench. Finally, when the pipe sinks into place, cut off the sealing doors on both sides of the pipe with a rope saw, and the diver sinks and enters the pipe. Open the water inlet valve and exhaust valve of the buoy, and pull the pipe out of the pipe by the winch after the buoy is in a microgravity state underwater. In summary, compared with the external buoy, the internal buoy can complete the construction of the pipe sinking within 8 hours, with fewer sinking procedures, and the channel closure can be lifted within 12 hours, with little impact on the shipping economy. In addition, the contact surface between the buoy and the pipe is large, and the force is linear, which will not damage the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the immersed tube device provided by the embodiment of the utility model;

[0023] Figure 2 It is a front view of a buoy provided by an embodiment of the utility model;

[0024] Figure 3 It is a side view of a buoy provided by an embodiment of the utility model;

[0025] Figure 4 It is a schematic diagram of the structure of the connecting piece provided in an embodiment of the utility model.

[0026] In the figure:

[0027] 1. Lifting mechanism; 11. Lifting code; 12. Crane;

[0028] 2. Float; 21. Water inlet valve; 22. Exhaust valve;

[0029] 3. Connecting piece; 31. Ear seat; 32. Chain link; 33. Shackle; 34. Swivel. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0034] At present, the submerged tube is usually sunk by using a submerged tube device with an external buoy. This device sinks the tube with the help of a combination of airbags and steel buoys. The airbags need to be removed during the tube sinking process, and the removal of the airbags cannot be synchronized due to the influence of the number of motor boats and personnel. They can only be removed one by one, which takes a long time. The waterway needs to be closed for 2-3 days, which has a certain impact on the local shipping economy.

[0035] In order to solve the above problems, combined Figure 1-Figure 4 As shown, this embodiment provides a submerged tube device, and water inlet valves are arranged at both ends of the submerged tube. The submerged tube device includes a lifting mechanism 1 and a built-in buoy. The lifting mechanism 1 includes a lifting code 11 and a crane 12. There are multiple lifting codes 11, and multiple lifting codes 11 are arranged on the submerged tube. The lifting codes 11 and the crane 12 are arranged in a one-to-one correspondence. The crane 12 is located on both banks and / or on the water surface. The built-in buoy is arranged inside the submerged tube. The built-in buoy includes a buoy 2 and a connecting piece 3. There are several buoys 2. The connecting piece 3 is detachably connected between two adjacent buoys 2. The buoy 2 is in a hollow cylindrical shape. The buoy 2 is provided with a water inlet valve 21 and an exhaust valve 22.

[0036] It can be understood that a plurality of lifting weights 11 are welded on the surface of the submerged tube, and cranes 12 corresponding to the lifting weights 11 are arranged on both banks and on the water surface to provide lifting force for the submerged tube; built-in buoys are placed inside the submerged tube, and the connecting pieces 3 between two adjacent buoys 2 connect the buoys 2 in series, and the submerged tube is sunk into the base trench by means of the buoyancy of the built-in buoys and the crane 12 with low lifting force.

[0037] Among them, the cylindrical buoy 2 is arranged in the submerged tube, and the circumferential side of the buoy 2 is in contact with the submerged tube. The contact surface is large, and the force applied to the submerged tube is linear. Compared with the traditional external buoy 2, there is no need to weld the hanging code 11 and the limiting steel structure on the outer wall of the submerged tube, which converts the point force into linear force, and has higher stability and safety.

[0038] like Figure 2 As shown, ear seats 31 are provided at both ends of the buoy 2. The ear seat 31 has two oppositely arranged side plates. An ear plate is fixedly connected between the two side plates. Ear holes are provided on the ear plates. The side plates and the ear plates are connected to the end faces of the buoy 2 by welding. The welding is strong and not easy to loosen.

[0039] Preferably, if Figure 3 As shown, the ear seat 31 is located at the center of the end face of the buoy 2. The traction force of the connecting member 3 extends along the axial direction of the buoy 2, which is convenient for the buoy 2 to be pulled out of the self-sinking tube by the connecting member 3 and the winch. In addition, the air inlet valve and the exhaust valve 22 are both arranged at the same end of the buoy 2, which is convenient for divers to open the air inlet valve and the exhaust valve 22, and the removal is convenient and time-saving.

[0040] like Figure 1 As shown, at least two hanging weights 11 are located at the peripheral side of the end of the submerged tube, and the remaining hanging weights 11 are arranged at intervals on the peripheral side of the buoy 2 along the axial direction of the buoy 2. Preferably, six hanging weights 11 are provided in this embodiment, two of the six hanging weights 11 are respectively located at the two ends of the submerged tube, and the remaining four hanging weights 11 are arranged in the middle of the submerged tube. Correspondingly, two of the six cranes 12 are respectively located on both banks, and the remaining four cranes 12 are arranged on the water surface. The cranes 12 are connected to the hanging weights 11 in the vertical direction through the suspension cables to provide a lifting force for the submerged tube, so as to cooperate with the buoy 2 to realize the sinking operation of the submerged tube.

[0041] In other embodiments, the number of the hanging brackets 11 and the hanging machines 12 may be four, five, seven or eight, etc., which may be set according to actual conditions, and this embodiment does not make any specific limitation to this.

[0042] It should be noted that the crane 12 of this embodiment is a jib-mounted cargo ship installed on the water surface and a shore crawler crane installed on both banks.

[0043] like Figure 4 As shown, the connector 3 of this embodiment includes a chain, a shackle 33 and a swivel 34. The chain includes a chain link 32, and a plurality of chain links 32 are provided. The plurality of chain links 32 are sequentially linked, and the chain links 32 at both ends of the chain are connected to the corresponding ear seats 31. One or two shackles 33 are provided, and the shackles 33 are selectively provided at one end or both ends of the chain and connected to the ear seats 31. The swivel 34 is selectively provided between adjacent chain links 32.

[0044] Specifically, two swivels 34 are provided in this embodiment, and the two swivels 34 are respectively arranged on the chain rings 32 at both ends of the chain. The swivels 34 have high load-bearing capacity and wear resistance, can withstand the traction between adjacent buoys 2, and realize the rotational connection between the chain and the buoy 2, thereby eliminating the torsional force between the two. Two shackles 33 are provided, and the two shackles 33 are respectively connected to the two swivels 34 and connected to the ear holes of the ear seat 31, so as to facilitate the disassembly of the divers to take out the buoys 2 in the submerged tube one by one.

[0045] This embodiment takes an immersed tube with a length of 438 meters, a diameter of 2620 mm, a wall thickness of 28 mm, and a deadweight of 784 tons as an example. The axial direction of the immersed tube is arranged in a "V" shape.

[0046] Now combined Figure 1-Figure 4 The immersed tube process is further described in detail:

[0047] First, the submerged tube is put into the water. The submerged tube floats on the water surface due to the buoyancy of the float 2. At this time, the submerged tube lies flat on the horizontal surface, that is, the submerged tube is in a "V" shape when viewed from directly above the water surface.

[0048] Then, open the water inlet valves at both ends of the immersed tube to fill the interior of the immersed tube with water. The immersed tube gradually sinks into the water from floating freely on the water surface. After being filled with water, the immersed tube is balanced in the water by the lifting force. At this time, release the lifting handle to rotate the immersed tube as a whole by 90 degrees, that is, the middle part of the immersed tube is lower than the two ends of the immersed tube.

[0049] Next, lower the immersed pipe into the foundation trench;

[0050] Finally, when the submerged tube sinks into place, the sealing doors on both sides of the submerged tube are cut off with a rope saw, and the diver sinks and enters the submerged tube, opens the water inlet valve 21 and the exhaust valve 22 of the buoy 2, and makes the buoy 2 in a microgravity state underwater, and then the submerged tube is pulled out by the winch.

[0051] In summary, the internal buoys can complete the submerged tube sinking construction within 8 hours, with fewer sinking procedures, and the channel closure can be lifted within 12 hours, with little impact on the shipping economy.

[0052] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. Immersed tube device, with water inlet valves at both ends of the immersed tube, characterized in that: include: A hoisting mechanism (1) comprises a hoisting bracket (11) and a hoist (12), wherein a plurality of the hoisting brackets (11) are provided, and the plurality of the hoisting brackets (11) are provided on the immersed tube, and the hoisting brackets (11) and the hoist (12) are provided in a one-to-one correspondence, and the hoist (12) is located on both banks and / or on the water surface; and A built-in float (2) is arranged inside the float (2), the built-in float (2) comprises a float (2) and a connecting piece (3), the float (2) is provided with a plurality of floats, the connecting piece (3) is detachably connected between two adjacent floats (2), the float (2) is in the shape of a hollow cylinder, and the float (2) is provided with a water inlet valve (21) and an exhaust valve (22).

2. The immersed tube device according to claim 1, characterized in that: Ear seats (31) are provided at both ends of the buoy (2), and the connecting member (3) comprises: A chain, the chain comprising a chain ring (32), a plurality of the chain rings (32) being provided, the plurality of chain rings (32) being sequentially interlocked, and the chain rings (32) located at both ends of the chain being connected to the corresponding ear seats (31).

3. The immersed tube device according to claim 2, characterized in that: The connecting member (3) further comprises: A shackle (33), wherein one or two shackles (33) are provided, and the shackles (33) are selectively provided on one end or both ends of the chain and connected to the ear seat (31).

4. The immersed tube device according to claim 2, characterized in that: The connecting member (3) further comprises: A swivel (34), wherein the swivel (34) is selectively arranged between adjacent chain rings (32).

5. The immersed tube device according to claim 4, characterized in that: Two rotating rings (34) are arranged on each chain, and the two rotating rings (34) are respectively close to two ends of the chain.

6. The immersed tube device according to claim 2, characterized in that: The ear seat (31) is located at the center of the end surface of the buoy (2).

7. The immersed tube device according to any one of claims 1 to 6, characterized in that: The water inlet valve (21) and the exhaust valve (22) are both arranged at the same end of the buoy (2).

8. The immersed tube device according to any one of claims 1 to 6, characterized in that: At least two of the hanging weights (11) are located on the peripheral side of the end of the immersed tube, and the remaining hanging weights (11) are arranged at intervals on the peripheral side of the buoy (2) along the axial direction of the buoy (2).

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