A new type of BOP centralizing device

Abstract

The present invention discloses a novel BOP alignment device, which includes a rectangular beam, a fixed beam and a BOP alignment device frame. The fixed beam and the BOP alignment device frame are respectively fixed to both sides of the two rectangular beams by bolts. Fixed bases are respectively arranged on the two rectangular beams. A guiding device is connected to the BOP alignment device frame. One side in the middle of the BOP alignment device frame is connected with a hydraulic cylinder, and the hydraulic cylinder is installed in an oil cylinder fixing device and an oil cylinder fixed base. This BOP alignment device effectively prevents the BOP from tilting during the falling process, thereby damaging the hull structure and the BOP equipment itself.

Description

Technical Field

[0001] The present invention relates to a BOP straightening device for a semi-submersible platform, and specifically to a novel BOP straightening device. Background Art

[0002] When a semi-submersible offshore drilling platform places the BOP device, the BOP device is lowered from the main hull moonpool to the seabed. Since the semi-submersible platform sways left and right under the action of wind, waves and currents during operation, when lowering the BOP device, the BOP device will tilt due to the left and right swaying of the semi-submersible platform, resulting in an inclined lowering state. In severe cases, it may collide with the main hull during the lowering process, thus damaging the BOP or even the main hull structure. Therefore, it is necessary to design a novel BOP straightening device to ensure that the BOP drops in a vertical state when lowered and avoid collision with the main hull. Summary of the Invention

[0003] In order to solve the above problems, the present invention discloses a novel BOP straightening device.

[0004] The technical solution of the present invention is: a novel BOP straightening device, including a rectangular beam, a fixed beam and a BOP straightening device frame. The fixed beam and the BOP straightening device frame are respectively fixed on both sides of the two rectangular beams by bolts. Fixed bases are respectively arranged on the two rectangular beams (1). A guiding device is connected to the BOP straightening device frame. A hydraulic cylinder is connected to one side of the middle of the BOP straightening device frame, and the hydraulic cylinder is installed in the cylinder fixing device and the cylinder fixing base (7).

[0005] Further, the fixed base is of a rectangular structure. The top plate and the side plates of the fixed base are connected by welding. The bottom sealing plate of the fixed base is connected to the side plates by bolt b. A wear-resistant plate is fixed on the fixed base by bolt c. The fixed base is connected to the main hull by bolt a.

[0006] Further, the cylinder fixing device includes a semi-circular structure I and a semi-circular structure II. The middle between the semi-circular structure I and the semi-circular structure II is used to fix the hydraulic cylinder. A rubber pad is provided between the semi-circular structure I and the semi-circular structure II and is fixed by bolt e. Bolt d connects the semi-circular structure I to the main hull.

[0007] Further, the cylinder fixing base includes an ear plate, and a sleeve is welded on the ear plate, which is adapted to the hydraulic cylinder. The cylinder fixing base is connected to the main hull by bolt f.

[0008] Further, the guiding device includes a connecting ear plate. An axle pin fixing plate is arranged outside the connecting ear plate. The axle pin fixing plate and the connecting ear plate are connected to the hydraulic cylinder by an axle pin and are connected to the BOP straightening device frame. An axle pin limiting plate is also provided between the axle pin and the axle pin fixing plate. The axle pin fixing plate and the axle pin limiting plate are connected by bolt g.

[0009] Advantages of the present invention: The present BOP alignment device effectively prevents the BOP from tilting during the falling process, thereby preventing damage to the hull structure and the BOP equipment itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural diagram of the present invention;

[0011] Figure 2 is a schematic side view structural diagram of the present invention;

[0012] Figure 3 is a schematic structural diagram of the fixed base of the present invention;

[0013] Figures 4 - 5 is a schematic structural diagram of the oil cylinder fixed base and the oil cylinder fixing device of the present invention;

[0014] Figure 6 is a schematic structural diagram of the guiding device of the present invention;

[0015] Wherein: 1. rectangular beam, 2. fixed beam, 3. BOP alignment device frame, 3-1. connecting ear plate, 4. fixed base, 4-1. bolt a, 4-2. bolt b, 4-3. wear-resistant plate, 4-4. bolt c, 5. hydraulic cylinder, 6. oil cylinder fixing device, 6-1. bolt d, 6-2. bolt e, 6-3. rubber pad, 6-4. semi-circular structure I, 6-5. semi-circular structure II, 7. oil cylinder fixed base, 7-1. bolt f, 7-2. ear plate, 7-3. sleeve, 8. guiding device, 8-1. pin shaft fixing plate, 8-2. pin shaft limiting plate, 8-3. bolt g, 9. pin shaft. DETAILED DESCRIPTION OF THE INVENTION

[0016] In order to deepen the understanding of the present invention, the following describes in detail the specific embodiments of the present invention with reference to the drawings. The embodiments are only used to explain the present invention and do not limit the protection scope of the present invention.

[0017] As Figures 1 - 2 shown, a new type of BOP alignment device includes a rectangular beam 1, a fixed beam 2 and a BOP alignment device frame 3. The fixed beam 2 and the BOP alignment device frame 3 are respectively fixed on both sides of the two rectangular beams 1 by bolts. Fixed bases 4 are respectively arranged on the two rectangular beams 1. A guiding device 8 is connected to the BOP alignment device frame 3. One side of the middle of the BOP alignment device frame 3 is connected with a hydraulic cylinder 5, and the hydraulic cylinder 5 is installed in the oil cylinder fixing device 6 and the oil cylinder fixed base 7.

[0018] As Figure 3As shown, the fixed base 4 is of rectangular structure. The top plate and side plates of the fixed base 4 are connected by welding. The bottom sealing plate of the fixed base 4 is connected to the side plates by bolts b4-2. A wear-resistant plate 4-3 is fixed on the fixed base 4 by bolts c4-4. The wear-resistant plate is located inside the fixed base and is used to protect the fixed base (4) and extend its service life. The fixed base 4 is connected to the main hull by bolts a4-1.

[0019] As Figures 4 - 5 As shown, the oil cylinder fixing device 6 includes a semi-circular structure I6-4 and a semi-circular structure II6-5. The middle of the semi-circular structure I6-4 and the semi-circular structure II6-5 is used to fix the hydraulic cylinder 5. A rubber pad 6-3 is provided between the semi-circular structure I6-4 and the semi-circular structure II6-5 and is fixed by bolts e6-2. The bolt d6-1 connects the semi-circular structure I6-4 to the main hull.

[0020] The oil cylinder fixed base 7 includes an ear plate 7-2. A sleeve 7-3 is welded on the ear plate 7-2 to play a fixing role and is adapted to the hydraulic cylinder 5. The oil cylinder fixed base 7 is connected to the main hull by bolts f7-1.

[0021] As Figure 6 As shown, the guiding device 8 includes a connecting ear plate 3-1. An axle pin fixing plate 8-1 is provided outside the connecting ear plate 3-1. The axle pin fixing plate 8-1 and the connecting ear plate 3-1 are connected to the hydraulic cylinder 5 by an axle pin 9 and are connected to the BOP centering device frame 3. An axle pin limiting plate 8-2 is also provided between the axle pin 9 and the axle pin fixing plate 8-1. The axle pin fixing plate 8-1 and the axle pin limiting plate 8-2 are connected by bolts g8-3.

Claims

1. A new type of BOP alignment device, characterized in that: It includes a rectangular beam (1), a fixed beam (2) and a BOP alignment device frame (3). The fixed beam (2) and the BOP alignment device frame (3) are respectively fixed on both sides of the two rectangular beams (1) by bolts. Fixed bases (4) are respectively arranged on the two rectangular beams (1). A guiding device (8) is connected to the BOP alignment device frame (3). One side in the middle of the BOP alignment device frame (3) is connected with a hydraulic cylinder (5), and the hydraulic cylinder (5) is installed in an oil cylinder fixing device (6) and an oil cylinder fixed base (7).

2. The new type of BOP alignment device according to claim 1, characterized in that: The fixed base (4) is of a rectangular structure. The top plate and the side plates of the fixed base (4) are connected by welding. The bottom sealing plate of the fixed base (4) is connected to the side plates by bolts b (4-2). A wear-resistant plate (4-3) is fixed on the fixed base (4) by bolts c (4-4). The fixed base (4) is connected to the main hull by bolts a (4-1).

3. The new type of BOP alignment device according to claim 1, characterized in that: The oil cylinder fixing device (6) includes a semi-circular structure I (6-4) and a semi-circular structure II (6-5). The middle between the semi-circular structure I (6-4) and the semi-circular structure II (6-5) is used to fix the hydraulic cylinder (5). A rubber pad (6-3) is provided between the semi-circular structure I (6-4) and the semi-circular structure II (6-5) and is fixed by bolts e (6-2). Bolt d (6-1) connects the semi-circular structure I (6-4) to the main hull.

4. The new type of BOP alignment device according to claim 1, characterized in that: The oil cylinder fixed base (7) includes an ear plate (7-2). A sleeve (7-3) is welded on the ear plate (7-2) and is adapted to the hydraulic cylinder (5). The oil cylinder fixed base (7) is connected to the main hull by bolts f (7-1).

5. The new type of BOP alignment device according to claim 1, characterized in that: The guiding device (8) includes a connecting ear plate (3-1). An axle pin fixing plate (8-1) is arranged outside the connecting ear plate (3-1). The axle pin fixing plate (8-1) and the connecting ear plate (3-1) are connected to the hydraulic cylinder (5) by an axle pin (9) and are connected to the BOP alignment device frame (3). An axle pin limiting plate (8-2) is also provided between the axle pin (9) and the axle pin fixing plate (8-1). The axle pin fixing plate (8-1) and the axle pin limiting plate (8-2) are connected by bolts g (8-3).

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