Detachable ice piton preventing device

Abstract

The utility model discloses a detachable anti-ice piton device which comprises a main body annularly wrapping a jacket pile leg, the main body is in a shape formed by connecting two circular truncated cones in a bottom face connection mode, a through hole is vertically formed in the main body, and a protection pipe is arranged in the through hole in a penetrating mode. First perforated pinch plates are vertically arranged on the side walls of the main body on the two sides of the protective pipe along the wall surface, and second perforated pinch plates are detachably connected to the first perforated pinch plates. On the basis that the offshore platform pile leg is protected from being affected by ice damage, the installation process of the vertical pipe is simplified, construction efficiency is improved, and practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of offshore oil engineering technology, especially to a detachable anti-ice cone device. BACKGROUND

[0002] In winter, the Bohai Sea area faces the challenge of large-area sea ice, which poses a serious threat to the jacket of the offshore oil production platform. Although the traditional integrated anti-ice cone can alleviate ice damage to a certain extent, its structure limits flexibility and efficiency when additional risers are needed. Therefore, an innovative detachable anti-ice cone is developed to better meet the complex needs of modern offshore oilfield development. SUMMARY

[0003] The utility model discloses in order to solve the above technical problem, provide a detachable anti-ice cone device. When the rear-mounted riser is needed on the offshore oil platform pile leg, the anti-ice cone device not only can avoid cutting and damaging the original pile leg anti-ice cone of the platform jacket, but also can realize the anti-ice cone protection effect of the additional riser.

[0004] The utility model discloses the following technical scheme is adopted to be realized.

[0005] A detachable anti-ice cone device, comprising a main body wrapped around the pile leg of the jacket, the main body is connected in the shape of two circular truncated cone with the bottom surface connected, a through hole is formed vertically in the main body, and a protective tube is arranged in the through hole; first perforated buckles are arranged vertically on the side walls of the main body on both sides of the protective tube; and second perforated buckles are detachably connected to the first perforated buckles.

[0006] In view of the special needs of Bohai oilfield development, the above technical scheme not only provides effective ice damage protection, but also improves the adaptability and flexibility of offshore oil platforms for riser addition through innovative design. The successful implementation of this design will greatly improve the development efficiency and safety level of offshore oilfields in cold environments.

[0007] Further, the two ends of the protective tube pass out of the main body, and the height of the protective tube is less than the overall height of the detachable anti-ice cone device.

[0008] Further, a rubber pad is attached to the inside of the protective tube.

[0009] Further, the two first perforated buckles are bent and connected to form auxiliary edges above and below the protective tube.

[0010] Further, the first perforated buckles and the second perforated buckles are provided with matching connection holes, and a connecting bolt penetrates through the corresponding connection holes to connect the first perforated buckles and the second perforated buckles.

[0011] Further, a plurality of reinforcing rib plates are arranged on the outer side of the first perforated buckling plate and the inner side of the second perforated buckling plate, and the reinforcing rib plates are arranged on both sides of the connecting bolt.

[0012] Further, the reinforcing rib plates are symmetrical to the whole device cone top and are uniformly distributed upward and downward, and the reinforcing rib plates are symmetrical to the pipe center line and are uniformly distributed leftward and rightward.

[0013] Further, the height of the reinforcing rib plate is flush with the height of the buckling plate, and the distance between the two reinforcing rib plates is greater than the size of the connecting bolt.

[0014] The application has the following beneficial effects.

[0015] The ice cone device is prefabricated on land, the size and the positioning of the reserved riser part can be more accurately controlled, the influence of complex conditions on the construction accuracy under the offshore environment is avoided, and therefore the overall quality and reliability of the ice cone device are ensured. The ice cone device adopts a bolt detachable mode, the modularity and flexible replacement of the ice cone are realized, and great convenience is provided for the later offshore installation of the riser. The riser installation process is simplified, the construction efficiency is improved, and the error and risk caused by complex construction are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the utility model;

[0017] Figure 2 is Figure 1 an enlarged view of A part in figure

[0018] Among them, 1. main body;2. first perforated buckling plate;21. auxiliary edge;3. second perforated buckling plate;4. connecting bolt;5. reinforcing rib plate;6. pipe guard. DETAILED DESCRIPTION

[0019] The present patent application is further described below in combination with embodiments.

[0020] As Figures 1-2 shown, a detachable ice cone device comprises a main body 1, a first perforated buckling plate 2, a second perforated buckling plate 3, a connecting bolt 4, a reinforcing rib plate 5 and a pipe guard 6.

[0021] The main body 1 is annularly wrapped and fixed on the guide pipe support pile leg, specifically, the main body 1 is in the shape of two circular truncated cones connected in a way that the bottom surfaces are connected, the maximum outer diameter of the main body 1 forms the cone top position of the ice cone device, and the upper and lower parts of the ice cone device are designed symmetrically along the cone top position. The cone top position is flush with the reference sea level, the winter sea ice flows and contacts the cone top of the ice cone, so that extrusion force is generated, the floating ice is damaged, and the protection of the platform guide pipe support is realized.

[0022] A through hole is formed in the main body 1, the extension direction of the through hole is consistent with the platform pile leg direction, a protection pipe 6 is arranged in the through hole, the upper end and the lower end of the protection pipe 6 pass through the through hole, and the protection pipe 6 is fixed on the main body 1. The overall height of the protection pipe 6 is less than the overall height of the detachable ice protection cone, the inner diameter of the protection pipe 6 is greater than the outer diameter size of the reserved riser, and a rubber pad is attached to the inner side of the protection pipe 6, so as to protect the rear-mounted riser from being knocked.

[0023] The first perforated buckling plate 2 is fixed on the main body 1 on the two sides of the protection pipe 6, the first perforated buckling plate 2 is arranged vertically along the wall surface on the side wall of the main body 1, and the two first perforated buckling plates 2 are bent and connected to form an auxiliary edge 21 above and below the protection pipe 6. The auxiliary edge 21 cooperates with the protection pipe 6 to ensure the setting direction of the riser and can assist in supporting the riser.

[0024] The second perforated buckling plate 3 is movably connected to the inner side of the two first perforated buckling plates 2. Specifically, the second perforated buckling plate 3 is arranged in parallel with the first perforated buckling plate 2, the positions of the holes arranged on the first perforated buckling plate 2 and the second perforated buckling plate 3 correspond to each other, and the connecting bolt 4 is arranged in the corresponding holes, so as to realize detachable connection of the first perforated buckling plate 2 and the second perforated buckling plate 3. When the offshore platform rear-mounted riser is mounted, the second perforated buckling plate 3 is removed by the connecting bolt 4, the riser is installed on the jacket through the protection pipe 6, and then the second perforated buckling plate 3 is reconnected and fixed with the first perforated buckling plate 2, so as to complete the installation of the rear-mounted riser and the protection of the riser.

[0025] The main body 1, the first perforated buckling plate 2 and the second perforated buckling plate 3 of the application all have the functions of ice breaking and ice resistance. In actual use, the floating ice continuously extrudes the main body and the detachable part of the ice protection cone device in winter. Considering that the detachable part is only fixedly connected with the main body by the bolt, the long-time collision of the floating ice will damage the overall strength. In order to reduce the fatigue strength of the detachable part, the reinforcing rib plates 5 are arranged on the first perforated buckling plate 2 and the inner side of the second perforated buckling plate 3. Specifically, a plurality of reinforcing rib plates 5 are arranged on the outer side of the first perforated buckling plate 2 and the inner side of the second perforated buckling plate 3. The reinforcing rib plates 5 are symmetrical to the top of the whole device and are uniformly distributed upward and downward. At the same time, the reinforcing rib plates 5 are symmetrical to the center line of the protection pipe 6 and are uniformly distributed left and right. The height of the reinforcing rib plate 5 is flush with the height of the buckling plate, and the distance between the two reinforcing rib plates 5 is greater than the size of the connecting bolt 4, so as to ensure that the first perforated buckling plate 2 and the second perforated buckling plate 3 can be connected and fixed by the connecting bolt 4. The connecting bolt 4 and the reinforcing rib plate 5 jointly fix the main body 1, the first perforated buckling plate 2 and the second perforated buckling plate 3 as a whole, so as to achieve the functions of protecting the jacket pile leg and the riser from ice breaking and ice resistance.

[0026] The application is prefabricated on land as a whole, through prefabricated design, the size of the detachable part can be more accurately controlled, the positioning and precision of the riser part are reserved, and the influence of complex conditions under the offshore environment on the construction precision is avoided. Meanwhile, the environment is more stable when prefabricated on land, and the overall quality and reliability of the ice cone can be guaranteed.

[0027] The detachable ice cone of the application is modularly designed, in the offshore construction process, only the bolts need to be disassembled, the removal of the second perforated buckling plate 3 can be completed, the overall construction efficiency is high, the construction period is short, the construction risk coefficient is low, in addition, the second perforated buckling plate 3 is modularly designed and installed, which is also convenient for flexible replacement in the later period, and the convenience of the post-installed riser is greatly increased.

[0028] The embodiments of the specific embodiment are preferred embodiments of the utility model, and do not limit the protection scope of the utility model, so that: equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. A detachable ice-pick device, characterized by: The utility model relates to a detachable anti-icing cone device, which comprises a main body (1) wrapped around the legs of a jacket pile in a ring shape, the main body (1) is connected in a shape of two circular truncated cones with the bottom surfaces connected, a through hole is vertically formed in the main body (1), a protective pipe (6) is arranged in the through hole, first perforated buckling plates (2) are vertically arranged on the side walls of the main body (1) on both sides of the protective pipe (6) along the wall surfaces, and second perforated buckling plates (3) are detachably connected to the first perforated buckling plates (2).

2. A detachable ice pick guard device according to claim 1, characterized in that: Both ends of the protective pipe (6) pass out of the main body (1), and the height of the protective pipe (6) is less than the height of the whole detachable anti-icing cone device.

3. The detachable ice pick guard of claim 1, wherein: Rubber pads are attached to the inner side of the protective pipe (6).

4. The detachable ice-protection device of claim 1, wherein: The two first perforated buckling plates (2) are bent and connected to form auxiliary edges (21) above and below the protective pipe (6).

5. The detachable ice-protection device of claim 1, wherein: The first perforated buckling plates (2) and the second perforated buckling plates (3) are provided with matched connecting holes, and connecting bolts (4) pass through the corresponding connecting holes to connect the first perforated buckling plates (2) and the second perforated buckling plates (3).

6. The detachable ice-protection device of claim 1, wherein: A plurality of reinforcing rib plates (5) are arranged on the outer side of the first perforated buckling plates (2) and the inner side of the second perforated buckling plates (3), and the reinforcing rib plates (5) are arranged on both sides of the connecting bolts (4).

7. A detachable ice pick guard device according to claim 6, wherein: The reinforcing rib plates (5) are symmetrically arranged on the whole device, are uniformly distributed upwards and downwards, and are symmetrically arranged on the center line of the protective pipe (6) and are uniformly distributed leftward and rightward.

8. The detachable ice pick guard of claim 6, wherein: The height of the reinforcing rib plates (5) is flush with the height of the buckling plates, and the distance between the two reinforcing rib plates (5) is greater than the size of the connecting bolts (4).

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