Deepwater optical cable flexible joint protection structure

Abstract

The utility model discloses a deepwater optical cable flexible joint protection structure, comprising a protection steel pipe (1) and a welding steel pipe (2), the protection steel pipe (1) wraps a flexible joint (3) through a crimping technology and is fixed, the welding steel pipe (2) is sleeved on the outer layer of the protection steel pipe (1), and an armor layer gap (4) is arranged between the welding steel pipe (2) and the protection steel pipe (1) at an interval. And the two ends of the welded steel pipe (2) are respectively welded and fixed with the armored steel wires at the two sides of the armored layer gap (4). The utility model provides a deepwater optical cable flexible joint protection structure which meets the laying and splicing requirements of an optical cable in a deep sea area.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of optical cable, specifically is a deepwater optical cable flexible joint protection structure. BACKGROUND

[0002] With the rapid development of economy, the exploration and development of deep sea area are more and more perfect, in order to ensure the convenience of exploration and development in deep sea area, offshore operation platform will be built in deep sea area, including offshore oil well platform, offshore natural gas platform, offshore wind turbine platform etc., in order to ensure the energy transmission of offshore operation platform and meet the operation conditions of offshore operation platform, the cable, optical cable, oil pipe and other connecting facilities will be connected between offshore operation platform and land.

[0003] But when laying connecting facilities in deep sea area, because of the complex seabed environment of deep sea area and the limitation of production equipment, single connecting facility is difficult to complete the whole laying requirement, so the connecting facility needs to be connected. At the same time, in the connecting facilities in deep sea area, high pressure environment of deep sea needs to be faced, and the conventional connecting structure cannot meet the pressure resistance requirement. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a deepwater optical cable flexible joint protection structure which meets the laying and connecting requirements of optical cable in deep sea area.

[0005] The utility model adopts the technical scheme that the utility model relates to a deepwater optical cable flexible joint protection structure, which comprises a protective steel pipe and a welded steel pipe, the protective steel pipe is wrapped around the flexible joint and fixed through a crimping process, the welded steel pipe is sleeved on the outer layer of the protective steel pipe, there is an armor layer gap between the welded steel pipe and the protective steel pipe, and the two ends of the welded steel pipe are welded and fixed with the armor steel wires on the two sides of the armor layer gap.

[0006] Compared with the prior art, the utility model has the advantages that at the connecting part of the optical cable, a flexible joint is used to connect the cores of two sections of optical cable, the flexible joint is first protected by the protective steel pipe, and then the connecting part is secondarily protected by the welded steel pipe, so that the connecting strength and pressure resistance of the connecting part are greatly improved, and the structure of the connecting part can also meet the laying conditions in deep sea area.

[0007] As an improvement of the utility model, the two ends of the protective steel pipe are fixed with the cores of the optical cable, and the middle section of the protective steel pipe remains tubular after crimping. Through the improvement, the installation and fixation of the protective steel pipe are realized, and the middle section of the protective steel pipe still remains tubular, which can better maintain the strength of the protective steel pipe and reduce the probability of pressure deformation, so that the protective steel pipe can avoid extruding the flexible joint and causing damage to the flexible joint.

[0008] As a kind of improvement of the utility model, the outer layer of the protective steel pipe is successively coated with connecting water-blocking tape and connecting inner sheath layer from inside to outside, the length of the connecting water-blocking tape is 2-3 times of the length of the protective steel pipe, the connecting water-blocking tape coats the end of the original water-blocking tape of the optical cable, and the two ends of the connecting inner sheath layer abut against the original inner sheath layer of the optical cable, through the improvement, the water-blocking performance and structural strength at the joint are ensured, and the connecting inner sheath layer and the original inner sheath layer are heated and fused by an infrared heating device.

[0009] As a kind of improvement of the utility model, the connecting water-blocking tape is wrapped in multiple layers, and the wrapping directions of the two connected layers of the connecting water-blocking tape are cross-shaped, through the improvement, the connecting water-blocking tape wrapped in multiple layers and cross-shaped can increase the difficulty of water seepage, thereby ensuring the water-blocking effect.

[0010] As a kind of improvement of the utility model, before the welding steel pipe and the armored steel wire are welded, the welding steel pipe and the armored layer are movably connected, through the improvement, seamless steel pipe can be used as the welding steel pipe, thereby improving the structural strength at the joint, if the metal sheath pipe is formed by using the steel sheet wrapping welding process, not only the structural strength is low, but also the welding position needs to be polished and processed, the process is complex, and the operation cycle is long.

[0011] As a kind of improvement of the utility model, the middle section of the welding steel pipe is provided with an embedded part embedded in the gap of the armored layer, and the two ends of the embedded part abut against the armored steel wires on both sides, through the improvement, the structural continuity of the armored layer can be ensured, thereby ensuring the structural strength of the armored layer.

[0012] As a kind of improvement of the utility model, the armored layer includes two layers of armored steel wires, the two layers of armored steel wires are inner armored steel wire and outer armored steel wire, at the gap of the armored layer, the outer armored steel wire is longer than the inner armored steel wire, and the outer armored steel wire is bent towards the inner armored steel wire in the length direction, through the improvement, a stable transition structure of the armored steel wire and the embedded part is formed, thereby ensuring the continuity of the structure, ensuring the structural strength, avoiding that the bending angle of the embedded part is too large, and affecting the structural strength of the welding steel pipe.

[0013] As a kind of improvement of the utility model, the twisting directions of the inner armored steel wire and the outer armored steel wire are cross-shaped, through the improvement, the stress yield of the armored layer is avoided, and the structural strength and stability of the armored layer are ensured.

[0014] As a kind of improvement of the utility model, the outer layer of the welding steel pipe is coated with a connecting outer sheath layer, the two ends of the connecting outer sheath layer abut against the original outer sheath layer, through the improvement, the outer structure protection and structural strength of the optical cable are realized, and the connecting outer sheath layer and the original outer sheath layer are heated and fused by an infrared heating device. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the whole sectional view structure schematic diagram of the utility model.

[0016] Figure 2 is the connecting group water belt around the connection structure schematic diagram of the utility model.

[0017] Figure 3 is the welding steel pipe before welding and placing structure schematic diagram of the utility model.

[0018] As shown in the figure: 1, the protection steel pipe, 2, the welding steel pipe, 2.1, the embedded part, 3, the soft joint, 4, the armor layer gap, 5, the core, 6, the connecting water blocking belt, 7, the connecting inner sheath layer, 8, the original water blocking belt, 9, the original inner sheath layer, 10, the inner layer armored steel wire, 11, the outer layer armored steel wire, 12, the connecting outer sheath layer, 13, the original outer sheath layer. DETAILED DESCRIPTION

[0019] The embodiment of the utility model is further described below in combination with the drawings.

[0020] As Figure 1 shown, a kind of deepwater optical cable soft joint protection structure, including protection steel pipe 1 and welding steel pipe 2, the protection steel pipe 1 is wrapped soft joint 3 by crimping process and is fixed, the welding steel pipe 2 is sleeved in the outer layer of protection steel pipe 1, the welding steel pipe 2 and protection steel pipe 1 between interval have armor layer gap 4, the both ends of the welding steel pipe 2 are welded fixed with the armored steel wire of the both sides of armor layer gap 4, the both ends of the protection steel pipe 1 are fixed with the core 5 of optical cable, the middle section of the protection steel pipe 1 keeps tubular after crimping.

[0021] As Figure 1 、 Figure 2 Shown, the outer layer of the protection steel pipe 1 is successively covered with connecting water blocking belt 6 and connecting inner sheath layer 7 from inside to outside, the length of the connecting water blocking belt 6 is 2-3 times the length of protection steel pipe 1, the connecting water blocking belt 6 covers the end of optical cable original water blocking belt 8, the both ends of the connecting inner sheath layer 7 are in contact with optical cable original inner sheath layer 9, the connecting water blocking belt 6 is wrapped with multiple layers, the wrapping direction of the two layers of the connecting water blocking belt 6 is cross set.

[0022] As Figure 1 、 Figure 3As shown, before the welding steel pipe 2 is welded with the armored steel wire, the welding steel pipe 2 is movably connected with the armored layer, a middle section of the welding steel pipe 2 is provided with an embedded part 2.1 embedded in the armored layer gap 4, two ends of the embedded part 2.1 are respectively abutted with the armored steel wires on two sides, when the welding steel pipe 2 is moved to cover the armored layer gap 4, a rolling device is used to reduce the pipe diameter of the welding steel pipe 2 on the armored layer gap 4, the armored layer comprises two layers of armored steel wires, the two layers of armored steel wires are an inner layer armored steel wire 10 and an outer layer armored steel wire 11, at the armored layer gap 4, the outer layer armored steel wire 11 is longer than the inner layer armored steel wire, and the length of the outer layer armored steel wire 11 longer than the inner layer armored steel wire 10 is bent towards the inner layer armored steel wire 10, and the twisting directions of the inner layer armored steel wire 10 and the outer layer armored steel wire 11 are crossly arranged.

[0023] When the soft joint 3 is installed, the crimping protection steel pipe 1 is installed, the water blocking tape 6 is wrapped and connected, and the inner sheath layer 7 is formed and connected, the inner layer armored steel wire 10 and the outer layer armored steel wire 11 are all warped outward to provide the processing space of the above process. Before the inner layer armored steel wire 10 and the outer layer armored steel wire 11 are warped outward, a section of the original outer sheath layer 13 is peeled off, and the welding steel pipe 2 is sleeved on the outer layer armored steel wire 11.

[0024] The welding steel pipe 2 is wrapped with a connecting outer sheath layer 12, and two ends of the connecting outer sheath layer 12 abut with the original outer sheath layer 13.

[0025] The connection of two ends of the connecting inner sheath layer 7 with the original inner sheath layer 9 of the optical cable and the connection of two ends of the connecting outer sheath layer 12 with the original outer sheath layer 13 are all connected by using an infrared heating device to heat and melt. The infrared heating device and the rolling device all belong to conventional devices.

[0026] Through the deep water optical cable soft joint protection structure, the connection strength of the optical cable connection part can be greatly improved, the water pressure resistance of the connection part in the deep sea area is ensured, and the use safety and stability of the optical cable are ensured.

[0027] The above only describes the best embodiment of the utility model, but cannot be understood as the limitation of the claims. The utility model is not limited to the above embodiment, and the specific structure can be changed. Any change within the protection scope of the independent claims of the utility model is within the protection scope of the utility model.

Claims

1. A deep water optical cable splice protector, characterized by: The application relates to a protective steel pipe (1) and a welded steel pipe (2), the protective steel pipe (1) is wrapped and fixed through a crimping process, the welded steel pipe (2) is sleeved on the outer layer of the protective steel pipe (1), and the welded steel pipe (2) is welded and fixed with the armored steel wires on both sides of the armored layer gap (4) at two ends of the welded steel pipe (2).

2. The protection structure of a soft joint of a deep water optical cable according to claim 1, characterized in that: The two ends of the protective steel pipe (1) are fixed with the core (5) of an optical cable, and the middle section of the protective steel pipe (1) remains tubular after crimping.

3. The protection structure of a soft joint of a deep water optical cable according to claim 2, characterized in that: The outer layer of the protective steel pipe (1) is wrapped with a connecting water-blocking tape (6) and a connecting inner sheath layer (7) from inside to outside, the length of the connecting water-blocking tape (6) is 2-3 times the length of the protective steel pipe (1), the connecting water-blocking tape (6) wraps the end of an original water-blocking tape (8) of the optical cable, and the two ends of the connecting inner sheath layer (7) abut against the original inner sheath layer (9) of the optical cable.

4. The protection structure of a soft joint of a deep water optical cable according to claim 3, characterized in that: The connecting water-blocking tape (6) is wrapped in multiple layers, and the wrapping directions of two connected connecting water-blocking tapes (6) are cross-shaped.

5. The protection structure of a soft joint of a deep water optical cable according to claim 1, wherein: Before the welded steel pipe (2) is welded with the armored steel wires, the welded steel pipe (2) is movably connected with the armored layer.

6. A deep water optical cable splice protector according to claim 5, wherein: The middle section of the welded steel pipe (2) is provided with an embedded part (2.1) embedded in the armored layer gap (4), and the two ends of the embedded part (2.1) abut against the armored steel wires on both sides.

7. A deep water optical cable splice protector according to claim 6, wherein: The armored layer comprises two layers of armored steel wires, the two layers of armored steel wires are an inner layer armored steel wire (10) and an outer layer armored steel wire (11), at the armored layer gap (4), the outer layer armored steel wire (11) is longer than the inner layer armored steel wire, and the outer layer armored steel wire (11) is bent in the direction of the inner layer armored steel wire (10) by a length longer than the inner layer armored steel wire (10).

8. A deep water optical cable splice protector according to claim 7, wherein: The twisting directions of the inner layer armored steel wire (10) and the outer layer armored steel wire (11) are cross-shaped.

9. The protection structure of a soft joint of a deep water optical cable according to claim 1, wherein: The outer layer of the welded steel pipe (2) is wrapped with a connecting outer sheath layer (12), and the two ends of the connecting outer sheath layer (12) abut against the original outer sheath layer (13).

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