Tensioner support for offshore pipe laying operation

Abstract

The invention discloses a tensioner support for offshore pipe laying operation, and belongs to the technical field of ocean engineering.The support comprises a door-shaped plane support, the tensioner support is detachably connected to the door-shaped plane support so that a tensioner can be overhead, a guide arc plate is detachably connected to the door-shaped plane support, the guide arc plate is located at a pipe cable inlet of the tensioner, and the guide arc plate is detachably connected to the door-shaped plane support. Therefore, the pipe cable is guided and limited. The device is simple in structure and low in prefabrication cost, the safety and reliability of offshore flexible pipe cable laying construction can be improved, the economic cost and time cost of offshore construction are effectively saved, and construction operation related personnel can conveniently adjust the laid flexible pipe cable beside the tensioner.

Description

Technical Field

[0001] The invention belongs to the technical field of marine engineering, and in particular relates to a tensioner bracket for offshore pipe laying operations. Background Art

[0002] At present, in the field of marine engineering, the underwater laying of flexible pipes and cables is roughly divided into horizontal laying and vertical laying. Vertical laying is currently mainly used in deep water areas, while the laying of flexible pipes and cables in shallow water generally uses the horizontal laying mode.

[0003] The biggest feature of the horizontal laying mode is that the flexible pipe cable has a relatively long travel on the deck, which requires a larger deck space and has certain requirements on the size of the engineering vessel. Especially when laying some flexible pipe cables in relatively deep water, it is necessary to install floats and counterweights on the pipe cable body to adjust the posture of the pipe cable in the water, which requires a certain space on the deck for installation.

[0004] In the traditional horizontal laying mode, the tensioner is usually placed directly on the deck or slightly elevated on the deck. After the flexible pipe cable comes out of the tensioner, it enters the water directly from the launching bridge on the side or stern. This makes it difficult to install floats and counterweights on the flexible pipe cable on the deck, requiring the assistance of a crane, and there is a risk of overbending.

[0005] Therefore, it is urgent to design a tensioner bracket for offshore pipe laying operations to solve the above-mentioned problems of high risk and low efficiency in horizontal laying of flexible pipes and cables. Summary of the invention

[0006] In order to solve the technical problems of high risk and low efficiency in horizontal laying of flexible pipes and cables mentioned in the background technology, a tensioner bracket for offshore pipe laying operations is provided to solve the above problems.

[0007] To achieve the above-mentioned purpose, the specific technical solution of a tensioner bracket for offshore pipe laying operations of the present invention is as follows: A tensioner bracket for offshore pipe laying operations comprises a gate-shaped plane bracket, to which a tensioner bracket is detachably connected, so that the tensioner is suspended, and a guide arc plate is detachably connected to the gate-shaped plane bracket, the guide arc plate is located at the pipe and cable entrance of the tensioner, so as to guide and limit the pipe and cable.

[0008] Furthermore, a support connecting frame is provided on the top of the gate-shaped plane bracket for installation of the tensioner bracket, and one side of the support connecting frame is raised for installation of the guide arc plate.

[0009] Furthermore, a first corridor for personnel movement is provided around the supporting connection frame.

[0010] Furthermore, the bottom of the tensioner bracket is screwed to the support connecting frame.

[0011] Furthermore, the tensioner bracket is provided with a slope so that the pipe and cable outlet of the tensioner is higher than the pipe and cable inlet of the tensioner.

[0012] Furthermore, a second corridor is provided on the tensioner bracket, and the second corridor is arranged in a U shape around the tensioner bracket. The second corridor matches the first corridor so that the first corridor is connected to the second corridor.

[0013] Furthermore, an operating platform for personnel operation is provided at one end of the tensioner bracket away from the pipe and cable inlet of the tensioner, and the operating platform is connected to the second corridor through a second ladder.

[0014] Furthermore, the guide arc plate is screwed to the protrusion of the support connecting frame.

[0015] Furthermore, the guide arc plate protrudes away from the tensioner bracket direction of the bracket to form an arc surface.

[0016] Furthermore, the guide arc plate gradually becomes smaller towards the direction approaching the tensioner.

[0017] The offshore pipe-laying tensioner bracket of the present invention has the following advantages: the present invention has a simple structure, low prefabrication cost, can improve the safety and reliability of offshore flexible pipe and cable laying construction, effectively save the economic cost and time cost of offshore construction, and facilitate construction-related personnel to adjust the flexible pipes and cables being laid next to the tensioner, thereby saving deck space, improving the construction efficiency of a single voyage of the engineering vessel, and improving the smoothness of the flexible pipe and cable laying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the normal working state of the tensioner bracket for offshore pipe laying operation of the present invention; Figure 2 It is a schematic diagram of the end of the cable of the tensioner support for offshore pipe laying operation of the present invention entering the water; Figure 3 It is a schematic diagram of the door-shaped plane support structure of the present invention.

[0019] Figure 4 It is a schematic diagram of the tensioner bracket structure of the present invention; Figure 5 It is a schematic diagram of the guide arc plate structure of the present invention.

[0020] Description of the markings in the figure: 1. Door-type plane bracket; 101. Support connecting frame; 102. First corridor; 103. First ladder; 2. Tensioner bracket; 201. Slope; 202. Second corridor; 203. Operating platform; 204. Second ladder; 3. Guide arc plate; 4. Tensioner; 5. Launch bridge; 6. Winch. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0022] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0023] Please refer to the attached Figure 1 To Attachment Figure 5 The present invention is described as a tensioner bracket for offshore pipelay operations.

[0024] In the traditional horizontal laying mode, the tensioner 4 is generally placed directly on the deck or slightly elevated on the deck. After the flexible pipe and cable come out of the tensioner 4, they are directly entered into the water from the launching bridge 5 at the side or stern. This makes it difficult to install floats and counterweights on the flexible pipe and cable on the deck, requiring the assistance of a crane, and there is a risk of overbending.

[0025] Therefore, the present invention provides a tensioner bracket for offshore pipe laying operations, such as Figure 1 As shown, it includes a door-shaped plane bracket 1, to which a tensioner bracket 2 is detachably connected, so that the tensioner 4 is suspended, and a guide arc plate 3 is detachably connected to the door-shaped plane bracket 1. The guide arc plate 3 is located at the pipe and cable entrance of the tensioner 4 to guide and limit the pipe and cable.

[0026] In this embodiment, the door-shaped planar bracket 1 is located at the lower position of the overall device.

[0027] Specifically, when laying flexible pipes and cables at sea, the pipes and cables are introduced into the pipe and cable inlet of the erected tensioner 4 through the guide arc plate 3. After the pipes and cables come out of the pipe and cable outlet of the tensioner 4, the pipes and cables are erected so that the positions of the pipes and cables match those of the water-entering bridge 5. Personnel can install floats and counterweights on the erected pipes and cables, thereby improving the efficiency of the horizontal laying of flexible pipes and cables and reducing the operational risks.

[0028] like Figure 3As shown, a support connecting frame 101 is provided on the top of the gate-type plane bracket 1 for installation of the tensioner bracket 2. One side of the support connecting frame 101 is raised for installation of the guide arc plate 3. The gate-type plane bracket 1 is a frame structure. The space below the support connecting frame 101 can be used to place a winch 6 for initial traction of the flexible pipe cable and traction of the end into the water. At the same time, other equipment and structures required for construction can be placed, thereby improving the space utilization rate of the deck and the efficiency of single voyage construction.

[0029] Preferably, a first corridor 102 for personnel movement is provided around the supporting connecting frame 101 , and a first ladder 103 is fixedly connected to the door-shaped plane bracket 1 for personnel to move to the first corridor 102 .

[0030] Preferably, the bottom of the tensioner bracket 2 is threadedly connected to the support connecting frame 101 to facilitate installation, disassembly and transportation.

[0031] like Figure 4 As shown, the tensioner bracket 2 is provided with a slope 201 so that the pipe cable outlet of the tensioner 4 is higher than the pipe cable inlet of the tensioner 4 .

[0032] A second corridor 202 is provided on the tensioner bracket 2. The second corridor 202 is arranged in a U shape around the tensioner bracket 2. The second corridor 202 matches the first corridor 102 so that the first corridor 102 is connected to the second corridor 202, providing construction personnel with space for auxiliary adjustments around the tensioner 4.

[0033] An operating platform 203 for personnel operation is provided at one end of the tensioner bracket 2 away from the cable entrance of the tensioner 4. The operating platform 203 is connected to the second corridor 202 through a second ladder 204, which is used for personnel to move to the operating platform 203 and then install floats and counterweights on the operating platform 203.

[0034] Preferably, the guide arc plate 3 is connected to the protruding thread of the support connecting frame 101 to facilitate installation, disassembly and transportation.

[0035] like Figure 5 As shown, the guide arc plate 3 is raised away from the tensioner bracket 2 of the bracket to form an arc surface to support the pipe cable.

[0036] Preferably, the guide arc plate 3 gradually becomes smaller towards the tensioner 4 to facilitate the guidance of the pipe and cable.

[0037] The working principle of the present invention is as follows: firstly, the door-shaped plane bracket 1 is arranged at the designated position of the main deck of the engineering ship, and then the tensioner bracket 2 is hoisted to the designated interface on the support connecting frame 101 for assembly, and then the guide arc plate 3 is installed at the designated interface position on the support connecting frame 101, and finally the tensioner 4 for laying the pipe cable is hoisted to the designated interface position on the upper surface of the tensioner bracket 2, and is assembled and fastened with bolts. In the laying operation stage, as shown in FIG. Figure 1 As shown, the winch 6 under the tensioner bracket 2 pulls the flexible cable out of the cable drum, and is hoisted to the guide arc plate 3 by the crane and enters the tensioner 4 clamping rail for clamping. After the tensioner 4 is clamped, the cable laying can begin. When the end of the cable leaves the drum, as shown in FIG. Figure 2 As shown, the winch 6 wire rope pulls the end of the umbilical cable in the reverse direction upward through the diverting pulley on the deck surface, and then the clamping guide rail of the tensioner 4 is opened, and the final entry of the umbilical cable into the water is completed by slowly releasing the winch 6 wire rope.

[0038] The present invention has a simple structure and low prefabrication cost, can improve the safety and reliability of offshore flexible pipe and cable laying construction, effectively save the economic cost and time cost of offshore construction, and is convenient for construction personnel to adjust the flexible pipes and cables being laid next to the tensioner 4, thereby saving deck space, improving the construction efficiency of the engineering ship in a single voyage, and improving the smoothness of the flexible pipe and cable laying process.

[0039] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A tensioner bracket for offshore pipe laying operations, characterized in that: It comprises a door-shaped plane bracket, to which a tensioner bracket is detachably connected, so that the tensioner is suspended; a guide arc plate is detachably connected to the door-shaped plane bracket, and the guide arc plate is located at the pipe and cable entrance of the tensioner to guide and limit the pipe and cable.

2. The offshore pipe-laying tensioner bracket according to claim 1, characterized in that: A support connecting frame is provided on the top of the gate-shaped plane bracket for installation of the tensioner bracket, and one side of the support connecting frame is raised for installation of the guide arc plate.

3. The offshore pipe-laying tensioner bracket according to claim 2, characterized in that: A first corridor for personnel activities is arranged around the supporting connection frame.

4. The offshore pipe-laying tensioner bracket according to claim 3, characterized in that: The bottom of the tensioner bracket is screwed to the support connecting frame.

5. The offshore pipe-laying tensioner bracket according to claim 3, characterized in that: The tensioner bracket is provided with a slope surface so that the pipe and cable outlet of the tensioner is higher than the pipe and cable inlet of the tensioner.

6. The offshore pipe-laying tensioner bracket according to claim 5, characterized in that: A second corridor is provided on the tensioner bracket. The second corridor is arranged in a U shape around the tensioner bracket. The second corridor matches the first corridor so that the first corridor is connected to the second corridor.

7. The offshore pipe-laying tensioner bracket according to claim 6, characterized in that: An operating platform for personnel operation is arranged at one end of the tensioner bracket away from the pipe and cable entrance of the tensioner, and the operating platform is connected with the second corridor through a second ladder.

8. The offshore pipe-laying tensioner bracket according to claim 2, characterized in that: The guide arc plate is screwed to the protrusion of the support connecting frame.

9. The offshore pipe-laying tensioner bracket according to claim 8, characterized in that: The guide arc plate protrudes away from the tensioner bracket direction of the bracket to form an arc surface.

10. The offshore pipe-laying tensioner bracket according to claim 9, characterized in that: The guide arc plate gradually becomes smaller towards the tensioner.

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