Underwater bearing head device

Abstract

The utility model discloses an underwater bearing head device which comprises a bearing head arranged at one end of an umbilical cable in a sleeved mode, and a bending reinforcing piece is arranged on the outer side of the umbilical cable and the outer side of one end of the bearing head. The end, away from the bent reinforcing piece, of the bearing head is connected with a connecting pipe, and the spare end of the connecting pipe is provided with a tail end connecting piece. A through hole is formed in the bearing head, fixing glue is filled between the middle of the through hole and the umbilical cable, and waterproof glue is filled between the two ends of the through hole and the umbilical cable. According to the utility model, an integrated structure is adopted, seawater is prevented from seeping into the umbilical cable through a gap of the bearing head, the vulcanized glue is poured between the bearing head and the umbilical cable outer sheath, and the epoxy resin glue is poured between the bearing head and the umbilical cable armor, so that the umbilical cable adapts to a high-pressure environment in a deepwater environment, and waterproof failure is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the field of cable accessories, in particular to an underwater bearing head device. Background Art

[0002] As a key component of the underwater control system, the umbilical cable system is the "nerve and lifeline" connecting the surface platform facilities and the underwater production system. With the continuous advancement of deep-sea exploration, umbilical cables are also developing towards great water depths, ultra-deep water depths and even full sea depths. Therefore, higher waterproof capabilities and greater working load requirements are placed on the accessories of ultra-deep umbilical cables. Existing bearing heads are generally not suitable for working environments at great water depths. This is because in deep-water environments with very high water pressures, the waterproof measures in the internal connection gaps of the bearing heads are very easy to fail, resulting in seawater infiltration. The deep seawater will corrode the internal structure of the bearing head, the outer sheaths of each unit of the umbilical cable, and the armor layer of the umbilical cable, resulting in a reduction in the installation working load of the bearing head and the umbilical cable. Utility Model Content

[0003] In order to solve the problem that the existing bearing head cannot meet the waterproof requirement in a deep water environment, the utility model provides an underwater bearing head device.

[0004] The utility model is realized by adopting the following technical solutions.

[0005] An underwater bearing head device comprises a bearing head sleeved on one end of an umbilical cable, wherein a bending reinforcement is provided on the outer side of the umbilical cable and one end of the bearing head; the end of the bearing head away from the bending reinforcement is connected to a connecting pipe, and the remaining end of the connecting pipe is provided with a tail end connecting piece; a through hole is opened in the bearing head, and fixing glue is filled between the middle of the through hole and the umbilical cable, and waterproof glue is filled between the two ends of the through hole and the umbilical cable.

[0006] Furthermore, the through hole comprises a first circular hole segment, a conical hole segment and a second circular hole segment which are connected in sequence, and the inner diameter of the first circular hole segment matches the outer diameter of the umbilical cable and is smaller than the inner diameter of the second circular hole segment.

[0007] Furthermore, the first circular hole section is sleeved on the outside of the outer sheath of the umbilical cable, and the inner wall of the load-bearing head of the first circular hole section away from the conical hole section is recessed to form a glue injection cavity, and the glue injection cavity is filled with a first waterproof glue to form a first waterproof glue section; the conical hole section is sleeved on the outside of the umbilical cable armor, and the space between the conical hole section and the umbilical cable is filled with a fixing glue to form a fixing glue section; the second circular hole section is sleeved on the outside of the inner sheath of the umbilical cable, and the space between the second circular hole section and the umbilical cable is filled with a second waterproof glue to form a second waterproof glue section.

[0008] Furthermore, the cavity wall of the glue injection cavity is wavy.

[0009] Furthermore, both end surfaces of the load-bearing head are respectively connected to a first baffle and a second baffle for sealing the waterproof glue.

[0010] Furthermore, a convex ring structure is formed on the outer wall of the load-bearing head, and the ends of the bending reinforcement member and the connecting pipe respectively abut against the two side surfaces of the convex ring structure and are fixed to the load-bearing head.

[0011] Furthermore, the surface of the outer sheath of the umbilical cable on the inner side of the first circular hole section and the surface of the inner sheath of the umbilical cable on the inner side of the second circular hole section are both polished and roughened.

[0012] The utility model obtains the following beneficial effects.

[0013] 1. The load-bearing head of the utility model adopts an integrated structure to prevent seawater from penetrating into the umbilical cable through the gap of the load-bearing head. At the same time, a glue pouring design is adopted to pour vulcanized glue between the load-bearing head and the outer sheath of the umbilical cable. After curing, it can meet the waterproof requirements under the extreme working conditions of 2000 meters underwater;

[0014] 2. The utility model injects epoxy resin glue between the load-bearing head and the umbilical cable armor to fix the load-bearing head and the umbilical cable armor into one piece. The breaking strength of the load-bearing head is as high as 160kN, so it can adapt to the high-pressure environment in deep water environment and effectively avoid waterproof failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a structural schematic diagram intended to embody the load-bearing head of the utility model.

[0017] Among them, 1. load-bearing head; 2. bending reinforcement; 3. connecting pipe; 4. tail end connecting piece; 5. umbilical cable; 6. first circular hole section; 7. conical hole section; 8. second circular hole section; 9. glue injection cavity; 10. first waterproof glue section; 11. fixed glue section; 12. second waterproof glue section; 13. first baffle; 14. second baffle. DETAILED DESCRIPTION

[0018] The technical solution of the utility model will be clearly and completely described below through specific implementation methods.

[0019] like Figure 1 As shown, an underwater bearing head device includes a bearing head 1, a bending reinforcement 2, a connecting pipe 3 and a tail end connecting piece 4.

[0020] The bearing head 1 is sleeved on the end of the umbilical cable 5, the bending reinforcement 2 is sleeved on the outside of the umbilical cable 5 and one end of the bending reinforcement 2 is connected to one end of the bearing head 1, and the other end of the bearing head 1 is connected to the connecting pipe 3, and the empty end of the connecting pipe 3 is provided with a tail end connector 4.

[0021] The load-bearing head 1 is provided with a through hole, the middle of the through hole and the umbilical cable 5 are filled with fixing glue, and the ends of the through hole and the umbilical cable 5 are filled with waterproof glue. Figure 2 As shown, the through hole is composed of a first circular hole segment 6, a conical hole segment 7, and a second circular hole segment 8. The inner diameter of the first circular hole segment 6 matches the outer diameter of the umbilical cable 5, and the inner diameter of the second circular hole segment 8 is larger than the inner diameter of the first circular hole segment 6. The two ends of the conical hole segment 7 are respectively connected to one end of the first circular hole segment 6 and one end of the second circular hole segment 8, that is, the first circular hole segment 6 and the second circular hole segment 8 with different diameters are connected through the conical hole segment 7. The first circular hole segment 6 is sleeved on the outer side of the outer sheath of the umbilical cable 5, and a glue injection cavity 9 is provided at the other end of the first circular hole segment 6. The glue injection cavity 9 is filled with a first waterproof glue 10. The conical hole segment 7 is sleeved on the outer side of the armor of the umbilical cable 5, and the conical hole segment 7 is filled with a fixing glue 11. The second circular hole segment 8 is sleeved on the outer side of the inner sheath of the umbilical cable 5, and the second circular hole segment 8 is filled with a second waterproof glue 12.

[0022] Among them, the outer side of the injection cavity 9 is wavy. The wavy structure can increase the surface area of ​​the outer side of the injection cavity 9, thereby increasing the adhesion between the first waterproof glue 10 and the inner surface of the injection cavity 9. Moreover, after the first waterproof glue 10 is cured, the wavy structure can form a snap-fit ​​structure to prevent the first waterproof glue 10 from sliding inward due to the external water pressure and causing waterproof failure. The outer sheath surface of the umbilical cable 5 inside the first circular hole section 6 is polished and roughened, thereby increasing the adhesion between the first waterproof glue 10 and the outer sheath of the umbilical cable 5 and ensuring its waterproof effect.

[0023] A first baffle 13 is provided at one end of the bearing head 1. The first baffle 13 is sleeved on the outside of the outer sheath of the umbilical cable 5 and is fixed to the end face of one end of the bearing head 1 by bolts. A second baffle 14 is provided at the other end of the bearing head 1. The second baffle 14 is sleeved on the outside of the inner sheath of the umbilical cable 5 and is fixed to the end face of the other end of the bearing head 1 by bolts. The two end faces of the bearing head 1 are sealed and fixed by two baffles, which can provide a certain protection for the internal waterproof glue and prevent the external water pressure from directly acting on the waterproof glue.

[0024] In this embodiment, the first waterproof glue 10 and the second waterproof glue 12 are made of vulcanized glue to achieve a good deep water waterproof effect. The fixing glue 11 is made of epoxy resin glue, which can solidify the bearing head 1 and the armor of the umbilical cable 5 into one after curing, thereby greatly increasing the strength of the entire bearing head device structure.

[0025] One end of the bending reinforcement 2 and one end of the bearing head 1 are provided with corresponding screw holes, and one end of the bending reinforcement 2 is sleeved on the outside of one end of the bearing head 1 and is fixed by bolts. One end of the connecting pipe 3 and the other end of the bearing head 1 are provided with corresponding screw holes, and one end of the connecting pipe 3 is sleeved on the outside of the other end of the bearing head 1 and is fixed by bolts. The outer side of the bearing head 1 is provided with a convex ring structure protruding from the side of the bearing head 1. When installed, one end of the bending reinforcement 2 and one end of the connecting pipe 3 abut against the side surfaces of the convex ring structure on both sides. The outer diameters of the bending reinforcement 2, the connecting pipe 3 and the convex ring structure are equal, so that in the installed state, the outer side surface of the bearing head device is an integrated plane structure.

[0026] When the underwater bearing head device of the utility model is used, the end of the umbilical cable 5 is firstly stripped to expose the internal armor. After the armor is processed, the bearing head 1 is set on the outside of the umbilical cable 5 and one end of the conical hole section 7 is basically level with the armor stripping part. At this time, epoxy resin glue is poured into the conical hole section 7 until the liquid level of the epoxy resin glue reaches the other end of the conical hole section 7. The pouring is stopped, and the epoxy resin glue is waited for 12 hours to completely solidify, and the excess armor exposed above the epoxy resin glue is cut off. The first circular hole section 6 and the second circular hole section 8 of the bearing head 1 are cleaned, and the surface of the outer sheath and the inner sheath of the umbilical cable 5 are roughened, and then the vulcanized glue is poured into the glue injection cavity 9 of the first circular hole section 6 and the second circular hole section 8. After waiting for 12 hours for the vulcanized glue to completely solidify, the first baffle 13 and the second baffle 14 are installed, and finally the bending reinforcement 2, the connecting pipe 3 and the tail end connector 4 are installed.

[0027] The load-bearing head of the utility model adopts an integrated structure to prevent seawater from penetrating into the umbilical cable through the gap of the load-bearing head. At the same time, a glue-injection design is adopted to inject vulcanized glue between the load-bearing head and the outer sheath of the umbilical cable. After curing, it can meet the waterproof requirements under the extreme working conditions of 2000 meters underwater. The utility model injects epoxy resin glue between the load-bearing head and the umbilical cable armor to fix the load-bearing head and the umbilical cable armor to form a whole. The breaking strength of the load-bearing head is as high as 160kN, so as to adapt to the high-pressure environment in deep water environment and effectively avoid waterproof failure.

[0028] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have been fully recorded in the technical requirements.

Claims

1. An underwater bearing head device, characterized in that: The invention comprises a bearing head (1) sleeved on one end of an umbilical cable (5), a bending reinforcement member (2) being provided on the outer sides of the umbilical cable (5) and one end of the bearing head (1); an end of the bearing head (1) away from the bending reinforcement member (2) is connected to a connecting pipe (3), and a tail end connecting member (4) is provided at the free end of the connecting pipe (3); a through hole is provided in the bearing head (1), a fixing glue is filled between the middle of the through hole and the umbilical cable (5), and a waterproof glue is filled between the two ends of the through hole and the umbilical cable (5).

2. An underwater bearing head device according to claim 1, characterized in that: The through hole comprises a first circular hole section (6), a conical hole section (7) and a second circular hole section (8) which are connected in sequence, and the inner diameter of the first circular hole section (6) matches the outer diameter of the umbilical cable (5) and is smaller than the inner diameter of the second circular hole section (8).

3. An underwater bearing head device according to claim 2, characterized in that: The first circular hole section (6) is sleeved on the outside of the outer sheath of the umbilical cable (5), and the inner wall of the bearing head of the first circular hole section (6) away from the conical hole section (7) is recessed to form a glue injection cavity (9), and the glue injection cavity (9) is filled with a first waterproof glue to form a first waterproof glue section (10); the conical hole section (7) is sleeved on the outside of the armor of the umbilical cable (5), and a fixing glue is filled between the conical hole section (7) and the umbilical cable (5) to form a fixing glue section (11); the second circular hole section (8) is sleeved on the outside of the inner sheath of the umbilical cable (5), and a second waterproof glue is filled between the second circular hole section (8) and the umbilical cable (5) to form a second waterproof glue section (12).

4. An underwater bearing head device according to claim 3, characterized in that: The cavity wall of the glue injection cavity (9) is wavy.

5. The underwater bearing head device according to claim 1, characterized in that: The two end surfaces of the load-bearing head (1) are respectively connected to a first baffle (13) and a second baffle (14) for sealing the waterproof glue.

6. The underwater bearing head device according to claim 1, characterized in that: A convex ring structure is formed on the outer wall of the bearing head (1), and the ends of the bending reinforcement member (2) and the connecting pipe (3) respectively abut against the two side surfaces of the convex ring structure and are fixed to the bearing head (1).

7. An underwater bearing head device according to claim 2, characterized in that: The outer sheath surface of the umbilical cable (5) inside the first circular hole section (6) and the inner sheath surface of the umbilical cable (5) inside the second circular hole section (8) are both polished and roughened.

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