Floating laying method of cylindrical component

Abstract

The invention provides a floating laying method for a cylindrical component, which comprises the following steps of: loading the cylindrical component onto a semi-submersible barge, and installing a buoyancy device on the inner side of the cylindrical component; after the semi-submersible barge dives until the bottom surface of the buoyancy device is in contact with the liquid level, an air inlet and outlet pipe of the buoyancy device is opened; and when the cylindrical component sinks to the preset water depth, the stable cavity is inflated through the air inlet and outlet pipe till the buoyancy device can float in water, and then the air inlet and outlet pipe is closed. Then the buoyancy device is adjusted to be coaxially arranged with the cylindrical component; the stable cavity is inflated for the second time through the air inlet and outlet pipe until the buoyancy of the buoyancy device is enough to drive the cylindrical component to float and hover in water, the cylindrical component is automatically separated from the semi-submersible barge, and then the cylindrical component can be dragged out of the dock to the laying position in a wet mode. And after the gas filled in the stabilizing cavity is discharged, the cylindrical component begins to settle. And after the perpendicularity of the cylindrical component is adjusted, the cylindrical component is finally settled to a water bottom foundation bed.

Description

Technical Field

[0001] The present application belongs to the technical field of component transportation and installation technology, and more specifically, to a floating deployment method for a cylindrical component. Background Art

[0002] As an important structure, cylindrical components are widely used in submarine pipeline laying, offshore platform infrastructure construction, underwater tunnel construction and other aspects. Due to the generally large volume and deadweight of cylindrical components, the traditional method of transporting cylindrical components mainly relies on large-scale lifting facilities for lifting operations. Although this method can meet the needs of transportation to a certain extent, these facilities are not only expensive to rent and use, but also in some remote or deep-sea areas, the accessibility and operability of large floating cranes are limited, further increasing the complexity and cost of transportation. During the sinking process, cylindrical components are also easily affected by wind and waves, resulting in position displacement. Traditional sinking methods make it difficult to achieve precise control of the sinking position of cylindrical components, which not only leads to inaccurate sinking positions, but may also have an adverse effect on subsequent installation operations and the stability of the entire structure. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a floating deployment method for cylindrical components to solve the technical problem of the difficulty in transporting and installing cylindrical components in the prior art.

[0004] To achieve the above purpose, the technical solution adopted in this application is:

[0005] A floating deployment method for a cylindrical component is provided, comprising the following steps:

[0006] Loading the cylindrical component onto a semi-submersible barge; installing a buoyancy device inside the cylindrical component, the buoyancy device comprising a buoyancy chamber and a stabilization chamber, the buoyancy device being used to provide buoyancy so that the cylindrical component can float in the water;

[0007] After the semi-submersible barge dives until the bottom surface of the buoyancy device contacts the liquid surface, the inlet and outlet pipes of the buoyancy device are opened to allow water to enter the stabilization chamber of the buoyancy device;

[0008] When the cylindrical component sinks to a preset water depth, air is inflated into the stabilizing chamber through the inlet and outlet pipes, and when the buoyancy device floats up, the inlet and outlet pipes are closed; the buoyancy device includes an axial limit assembly and a radial support assembly arranged at both axial ends, and the axial limit assembly and the radial support assembly are used to adjust the buoyancy device to be coaxially arranged with the cylindrical component;

[0009] Secondary inflation of air into the stabilizing chamber through the air inlet and outlet pipes until the buoyancy device drives the cylindrical component to float and suspend in the water and automatically separate from the semi-submersible barge;

[0010] Towing the cylindrical component to a deployment position and connecting it to the buoyancy device via a lifting device;

[0011] Open the inlet and outlet pipes, and after the cylindrical component is sunk to a preset distance between its bottom surface and the bottom bed, close the inlet and outlet pipes; adjust the verticality of the cylindrical component by adjusting the water level in the stabilizing chamber;

[0012] The air inlet and outlet pipes are opened to allow the cylindrical component to sink to the bottom of the water bed; when the buoyancy of the buoyancy device is less than its gravity, the connection between the buoyancy device and the cylindrical component is released, and the buoyancy device is lifted out of the cylindrical component by a lifting device.

[0013] As a further improvement of the above technical solution:

[0014] Optionally, the cylindrical member sinks to a preset distance between its bottom surface and the underwater base bed of not less than 1 m.

[0015] Optionally, the buoyancy device comprises a plurality of partitions, which divide the stabilization chamber into a plurality of mutually independent sub-cavities arranged along a circumferential direction, and the verticality of the buoyancy device is adjusted by adjusting the water level in the sub-cavities.

[0016] Optionally, the buoyancy device includes a float, the buoyancy chamber and the stabilization chamber are both arranged in the float, and an inlet and outlet are provided at the bottom of the stabilization chamber.

[0017] Optionally, the axial limiting assembly is arranged at the lower end of the buoyancy device, and the axial limiting assembly includes a first driving member, a limiting member and a first guide member, the first driving member is installed on the floating body, the limiting member is drivingly connected to the first driving member, the first driving member is used to drive the limiting member to contact the cylindrical member so that the buoyancy device is axially limited relative to the cylindrical member; the first guide member has a first guide groove extending in the radial direction of the cylindrical member, and the limiting member is slidably connected in the first guide groove.

[0018] Optionally, the radial support assembly is arranged at the upper end of the buoyancy device, and the radial support assembly includes a second driving member, a supporting member and a second guide member, the second driving member is installed on the floating body, the supporting member is drivingly connected to the second driving member, and the second driving member is used to drive the supporting member to bear against the inner wall of the cylindrical component; the second guide member is connected to the floating body, the second guide member has a second guide groove extending in the radial direction of the cylindrical component, and the supporting member is slidably connected in the second guide groove.

[0019] The beneficial effects of the floating deployment method of the cylindrical component provided by the present application are:

[0020] The floating deployment method of the cylindrical component of the present application comprises the following steps: firstly, the cylindrical component is loaded onto a semi-submersible barge, and a buoyancy device is installed on the inner side of the cylindrical component. The buoyancy device comprises a buoyancy chamber and a stabilization chamber, which provide buoyancy for the buoyancy device, so that the cylindrical component can float in the water, and is convenient for pulling the cylindrical component to float and transport in the water. The semi-submersible barge starts to dive, and after the bottom surface of the buoyancy device contacts the liquid surface, the inlet and outlet pipes of the buoyancy device are opened, so that water begins to enter the stabilization chamber of the buoyancy device, thereby increasing the stability of the buoyancy device. When the cylindrical component sinks to a preset water depth, air is inflated into the stabilization chamber through the inlet and outlet pipes, thereby increasing the buoyancy of the buoyancy device. When the buoyancy device has a certain buoyancy and floats freely in the water, the inlet and outlet pipes are closed to maintain the buoyancy. The buoyancy device comprises an axial limit assembly and a radial support assembly arranged at both ends of the axial direction, and the axial limit assembly and the radial support assembly are used to adjust the coaxial arrangement of the buoyancy device and the cylindrical component to prevent the buoyancy device from being tilted and stuck in the cylindrical component. The stabilizing chamber is inflated for the second time through the air inlet and air outlet pipes until the buoyancy of the buoyancy device is sufficient to drive the cylindrical component to float and suspend in the water, and automatically separate from the semi-submersible barge, and the cylindrical component can be wet-towed out of the dock to the deployment position. After the cylindrical component is towed to the deployment position, it is connected to the buoyancy device through the lifting equipment. The air inlet and air outlet pipes are opened to discharge the gas filled in the stabilizing chamber, reduce the buoyancy of the buoyancy device, and thus cause the cylindrical component to begin to sink. When the cylindrical component sinks to a preset distance between its bottom surface and the bottom bed, the air inlet and air outlet pipes are closed to ensure that the cylindrical component is suspended at the current settlement height. On this basis, by adjusting the water level in the stabilizing chamber, the level of the buoyancy device is adjusted, that is, the verticality of the cylindrical component is adjusted to ensure the vertical sinking accuracy of the cylindrical component. After adjusting the verticality of the cylindrical component, the air inlet and air outlet pipes are opened again to allow the cylindrical component to sink to the bottom bed, completing the sinking and deployment of the cylindrical component. As the air inlet and outlet pipes continue to exhaust, when the buoyancy of the buoyancy device is less than its weight, the connection between the buoyancy device and the cylindrical component is released, and then the buoyancy device is lifted out of the cylindrical component by lifting equipment to achieve the reuse of the buoyancy device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A structural schematic diagram of step 1 of the floating deployment method of a cylindrical component provided in this application;

[0023] Figure 2A structural schematic diagram of step 2 of the floating deployment method of a cylindrical component provided in this application;

[0024] Figure 3 A structural schematic diagram of step three of the floating deployment method of a cylindrical component provided in this application;

[0025] Figure 4 A structural schematic diagram of step 4 of the floating deployment method of a cylindrical component provided in this application;

[0026] Figure 5 A structural schematic diagram of step five of the floating deployment method of a cylindrical component provided in this application;

[0027] Figure 6 A structural schematic diagram of step six of the floating deployment method of a cylindrical component provided in this application;

[0028] Figure 7 This is a structural schematic diagram of step seven of the floating deployment method for a cylindrical component provided in this application.

[0029] Among them, the reference numerals in the figure are:

[0030] 1. Cylindrical components; 2. Semi-submersible barges;

[0031] 3. Buoyancy device; 4. Lifting equipment. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present invention, 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.

[0037] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of the present invention.

[0038] In the following description, suffixes such as "module", "component", "assembly" or "unit" are used only to facilitate the description of the present invention and have no specific meanings. Therefore, they can be used in combination.

[0039] The present invention will be further described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0040] The present application provides a floating deployment method for a cylindrical component, comprising the following steps:

[0041] like Figure 1As shown, the cylindrical component 1 is first loaded onto the semi-submersible barge 2, and a buoyancy device 3 is installed inside the cylindrical component 1. The buoyancy device 3 includes a buoyancy chamber and a stabilization chamber to provide buoyancy for the buoyancy device 3, so that the cylindrical component 1 can float in the water, which is convenient for towing the cylindrical component 1 for floating transportation in the water.

[0042] like Figure 2 As shown, the semi-submersible barge 2 begins to dive, and after the bottom surface of the buoyancy device 3 contacts the liquid surface, the air inlet and outlet pipes of the buoyancy device 3 are opened, so that water begins to enter the stabilization chamber of the buoyancy device 3, thereby increasing the stability of the buoyancy device 3.

[0043] When the cylindrical member 1 sinks to a preset water depth, air is inflated into the stabilizing chamber through the air inlet and air outlet pipes, thereby increasing the buoyancy of the buoyancy device 3. When the buoyancy device 3 has a certain buoyancy and floats freely in the water, the air inlet and air outlet pipes are closed to maintain the buoyancy. The buoyancy device 3 includes an axial limit assembly and a radial support assembly arranged at both ends of the axial direction. The axial limit assembly and the radial support assembly are used to adjust the buoyancy device 3 to be coaxial with the cylindrical member 1 to prevent the buoyancy device 3 from being tilted and stuck in the cylindrical member 1.

[0044] like Figure 3 As shown, the stabilizing chamber is inflated for the second time through the air inlet and outlet pipes until the buoyancy of the buoyancy device 3 is sufficient to drive the cylindrical component 1 to float and suspend in the water, and automatically separate from the semi-submersible barge 2, so that the cylindrical component 1 can be wet-towed out of the dock to the deployment position.

[0045] like Figure 4 As shown, after the cylindrical component 1 is towed to the deployment position, it is connected to the buoyancy device 3 through the lifting equipment 4.

[0046] like Figure 5 As shown, the air inlet and outlet pipes are opened to discharge the gas filled in the stabilizing chamber, reduce the buoyancy of the buoyancy device 3, and thus the cylindrical component 1 begins to sink. When the cylindrical component 1 sinks to a preset distance between its bottom surface and the bottom bed, the air inlet and outlet pipes are closed to ensure that the cylindrical component 1 is suspended at the current sinking height. On this basis, by adjusting the water level in the stabilizing chamber, the level of the buoyancy device 3 is adjusted, that is, the verticality of the cylindrical component 1 is adjusted to ensure the vertical sinking accuracy of the cylindrical component 1.

[0047] like Figure 6 As shown, after adjusting the verticality of the cylindrical component 1, the air inlet and outlet pipes are opened to allow the cylindrical component 1 to sink to the bottom of the water bed, thus completing the sinking and placement of the cylindrical component 1. Figure 7 As shown, with the continuous exhaust of the inlet and exhaust pipes, when the buoyancy of the buoyancy device 3 is less than its gravity, the connection between the buoyancy device 3 and the cylindrical component 1 is released, and then the buoyancy device 3 is lifted out of the cylindrical component 1 by the lifting equipment 4 to achieve the reuse of the buoyancy device 3.

[0048] like Figure 5 As shown, in a specific embodiment of the present application, the cylindrical component 1 sinks to a preset distance between its bottom surface and the underwater base bed of not less than 1 m, so as to avoid the cylindrical component 1 directly contacting the underwater base bed before being accurately positioned, thereby causing excessive resistance to the position adjustment of the cylindrical component 1.

[0049] In a specific embodiment of the present application, the buoyancy device 3 includes a plurality of partitions, which divide the stabilization chamber into a plurality of independent sub-cavities arranged along the circumferential direction. By controlling the water level in each sub-cavity respectively, the horizontality or verticality of the buoyancy device 3 can be adjusted, thereby driving the cylindrical component 1 to adjust its verticality.

[0050] In a specific embodiment of the present application, the buoyancy device 3 includes a float, and the buoyancy chamber and the stabilization chamber are both arranged in the float. The buoyancy chamber is used to provide basic buoyancy for the buoyancy device 3. An inlet and outlet are arranged at the bottom of the stabilization chamber, through which water is inletted into or out of the stabilization chamber.

[0051] In a specific embodiment of the present application, an axial limit assembly is disposed at the lower end of the buoyancy device 3, and the axial limit assembly includes a first driving member, a limit member and a first guide member, the first driving member is mounted on the float, the limit member is drivingly connected to the first driving member, and the first driving member is used to drive the limit member to contact the cylindrical member so as to axially limit the buoyancy device 3 relative to the cylindrical member. The first driving member can specifically be a hydraulic / pneumatic cylinder, an electric push rod, etc. The first guide member has a first guide groove extending in the radial direction of the cylindrical member 1, and the first guide groove provides an accurate moving path for the limit member. The limit member 22 can be slidably connected in the first guide groove to ensure the accuracy of the moving path of the limit member 22.

[0052] In a specific embodiment of the present application, a slot and flanges are provided on the inner wall of the cylindrical member 1. The first driving member is used to drive the limiting member to extend into the slot, and the axial limiting of the buoyancy device 3 relative to the cylindrical member is achieved through the cooperation of the flange and the limiting member. At the same time, the buoyancy of the buoyancy device is also transmitted to the cylindrical member 1 through the limiting member and the flange. When the first driving member drives the limiting member to exit the slot, the axial limiting of the buoyancy device 3 and the cylindrical member 1 is released.

[0053] In a specific embodiment of the present application, the radial support assembly is arranged at the upper end of the buoyancy device 3, and the radial support assembly includes a second driving member, a supporting member, and a second guiding member. The second driving member is installed on the floating body, and the supporting member is drivingly connected to the second driving member. The second driving member is used to drive the supporting member to support the inner wall of the cylindrical member; the second driving member can be a hydraulic / pneumatic cylinder, an electric push rod, etc. The second guiding member is connected to the floating body, and the second guiding member has a second guiding groove extending in the radial direction of the cylindrical member 1, and the second guiding groove provides an accurate moving path for the supporting member 32. The supporting member 32 can be slidably connected to the second guiding groove to ensure the accuracy of the moving path of the supporting member 32.

[0054] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A floating deployment method for a cylindrical component, characterized in that: The steps include: The cylindrical component (1) is loaded onto a semi-submersible barge (2); a buoyancy device (3) is installed inside the cylindrical component (1), wherein the buoyancy device (3) comprises a buoyancy chamber and a stabilization chamber, and the buoyancy device (3) is used to provide buoyancy so that the cylindrical component (1) can float in the water; After the semi-submersible barge (2) dives until the bottom surface of the buoyancy device (3) contacts the liquid surface, the air inlet and outlet pipes of the buoyancy device (3) are opened to allow water to enter the stabilization chamber of the buoyancy device (3); When the cylindrical component (1) sinks to a preset water depth, air is inflated into the stabilizing chamber through the air inlet and outlet pipes, and when the buoyancy device (3) floats up, the air inlet and outlet pipes are closed; the buoyancy device (3) comprises an axial limit assembly and a radial support assembly arranged at both axial ends, and the axial limit assembly and the radial support assembly are used to adjust the buoyancy device (3) to be coaxially arranged with the cylindrical component (1); Secondary inflation of air into the stabilizing chamber through the air inlet and outlet pipes until the buoyancy device (3) drives the cylindrical component (1) to float and suspend in the water and automatically separate from the semi-submersible barge (2); Towing the cylindrical component (1) to a deployment position and connecting it to the buoyancy device (3) via a lifting device (4); Opening the air inlet and outlet pipes, allowing the cylindrical component (1) to sink to a preset distance between its bottom surface and the bottom bed, and then closing the air inlet and outlet pipes; adjusting the verticality of the cylindrical component (1) by adjusting the water level in the stabilizing chamber; The air inlet and outlet pipes are opened to allow the cylindrical component (1) to sink to the bottom of the water; when the buoyancy of the buoyancy device (3) is less than its weight, the connection between the buoyancy device (3) and the cylindrical component (1) is released, and the buoyancy device (3) is lifted out of the cylindrical component (1) by means of a lifting device (4).

2. The floating deployment method of a cylindrical member according to claim 1, characterized in that: The cylindrical component (1) sinks until the preset distance between its bottom surface and the water bottom bed is not less than 1 m.

3. The floating deployment method of a cylindrical member according to claim 1, characterized in that: The buoyancy device (3) comprises a plurality of partitions, wherein the partitions divide the stabilization chamber into a plurality of mutually independent sub-cavities arranged along a circumferential direction, and the verticality of the buoyancy device (3) is adjusted by adjusting the water level in the sub-cavities.

4. The floating deployment method of a cylindrical member according to claim 1, characterized in that: The buoyancy device (3) comprises a floating body, the buoyancy chamber and the stabilization chamber are both arranged in the floating body, and an inlet and outlet are arranged at the bottom of the stabilization chamber.

5. The floating deployment method of a cylindrical member according to claim 4, characterized in that: The axial limiting assembly is arranged at the lower end of the buoyancy device (3), and the axial limiting assembly includes a first driving member, a limiting member and a first guiding member. The first driving member is installed on the floating body, and the limiting member is drivingly connected to the first driving member. The first driving member is used to drive the limiting member to contact the cylindrical member so that the buoyancy device (3) is axially limited relative to the cylindrical member; the first guiding member has a first guiding groove extending in the radial direction of the cylindrical member (1), and the limiting member can be slidably connected in the first guiding groove.

6. The floating deployment method of a cylindrical member according to claim 4, characterized in that: The radial support assembly is arranged at the upper end of the buoyancy device (3), and the radial support assembly includes a second driving member, a supporting member and a second guiding member, the second driving member is installed on the floating body, the supporting member is drivingly connected to the second driving member, and the second driving member is used to drive the supporting member to support the inner wall of the cylindrical member; the second guiding member is connected to the floating body, and the second guiding member has a second guiding groove extending in the radial direction of the cylindrical member (1), and the supporting member is slidably connected in the second guiding groove.

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