Submarine cable joint device suitable for three-core submarine cable

Abstract

The utility model relates to the technical field of submarine cables, in particular to a submarine cable joint device suitable for a three-core submarine cable. The utility model discloses a submarine cable joint device suitable for a three-core submarine cable, comprising a housing, two ends of the housing are detachably provided with armored fixing devices, each armored fixing device comprises a cylinder, one end of the cylinder facing the housing is buckled with a gland, and one side of the cylinder close to the gland is sleeved with a holding member. And a mounting gap is formed between the gland and the cylinder body. The submarine cable joint device suitable for the three-core submarine cable can carry out secondary adjustment on an armored steel wire.

Description

Technical Field

[0001] The utility model relates to the technical field of submarine cables, in particular to a submarine cable joint device suitable for three-core submarine cables. Background Art

[0002] In recent years, with the accelerated development of my country's marine economy, coastal islands and deep-sea energy, the demand for submarine cables has soared. The use of submarine cable junction boxes can better ensure the smooth operation of submarine cable transmission systems and is one of the most important devices in the construction of submarine cable projects.

[0003] When a submarine cable breaks in the sea, a prefabricated joint must be used to connect the broken submarine cable together, and a rigid joint box is placed on the outside. However, the existing rigid joint box has a relatively simple structure for fixing the steel wire inside, which can easily cause the steel wire to loosen, causing adverse effects on the actual engineering fixing effect, and has a single function and cannot achieve the function of secondary adjustment of the armored steel wire.

[0004] Therefore, those skilled in the art are committed to developing a submarine cable joint device suitable for a three-core submarine cable that can perform secondary adjustment on the armored steel wire. Utility Model Content

[0005] In view of the above-mentioned defects of the prior art, the utility model discloses a submarine cable joint device suitable for three-core submarine cables, and the technical problem to be solved is to provide a submarine cable joint device suitable for three-core submarine cables which can perform secondary adjustment on the armored steel wire.

[0006] To achieve the above-mentioned purpose, the utility model provides a submarine cable joint device suitable for a three-core submarine cable, comprising a shell, and armor fixing devices are detachably installed at both ends of the shell, and the armor fixing device comprises a cylinder, and a pressure cover is buckled at one end of the cylinder facing the shell, and a clamping member is sleeved on one side of the cylinder close to the pressure cover, and an installation gap is provided between the pressure cover and the cylinder.

[0007] The installation principle of the utility model is as follows: compared with the prior art, the utility model has a special design for the structure of fixing the armored steel wire, the gland is used to compress the armored steel wire, and the clamp is used to perform secondary reinforcement and clamping on the armored steel wire, and it can also be adjusted. When making a joint, the armored steel wire is passed through the armor fixing device, and the armored steel wire is folded back at its inner end. The gland is first used to compress the steel wire, which can prevent the steel wire from sliding and better fix the steel wire; then the clamp is used, which can be a wire clamp, to clamp and adjust the steel wire, which can adjust the deficiencies in the clamping operation and further clamp the steel wire.

[0008] Preferably, the middle part of the gland is a through hole for passing the submarine cable, the end of the cylinder is provided with a screw hole, the gland is provided with a mounting hole corresponding to the screw hole, and screws are installed in the mounting hole and the screw hole to fix the armored steel wire.

[0009] Preferably, the clamping member is a clamping hoop, which is an annular member provided with an opening and is fastened with screws.

[0010] Preferably, an end of the cylinder away from the shell is connected to an anti-bending device, and the outer portion of the anti-bending device is tapered, which can not only reduce the amount of material used but also avoid damage to the submarine cable.

[0011] Preferably, an installation step is provided at one end of the cylinder away from the shell, and a stepped hole matching the installation step is provided on the inner side of the anti-bending device. The tail of the armor fixing device, i.e., the tail of the cylinder, adopts a stepped design, which can not only save materials and reduce production costs, but also make it more convenient and quick to wrap the waterproof tape during the installation process, thereby improving installation efficiency.

[0012] Preferably, first flanges are provided at both ends of the shell, and a second flange corresponding to the first flange is provided on the outer side of the cylinder, and the first flange and the second flange are connected and fixed by screws.

[0013] Preferably, the shell is a split structure split along the axial direction, and preferably a half structure can be used, so that the bottom of the shell can be installed first, and the upper part of the shell can be installed after the armored steel wire is fixed, which is convenient for operation and improves installation efficiency. The shell can be made of 316L stainless steel, and its outer surface is coated with a layer of polypyrrole film, which has good anti-microbial adhesion performance and excellent anti-corrosion performance in the marine environment, and is suitable for the harsh marine environment.

[0014] Preferably, the shell is provided with a lifting ring and a glue injection hole, and the shell is injected with glue through each of the glue injection holes, and then the through hole is blocked to prevent glue leakage. At the same time, the sealing performance of the three-core submarine cable joint device is further improved by the glue injection treatment and the sealing blocking treatment, so that the submarine cable joint device of the three-core submarine cable can be used at a deeper seabed.

[0015] The utility model also provides a connection method applicable to a three-core submarine cable, using the submarine cable connection device applicable to a three-core submarine cable as described above, comprising the following steps:

[0016] 1) Before installing the middle joint, heat and straighten the two ends of the submarine cable to be connected, and process each layer of the submarine cable end to make the size of each layer of the submarine cable within the required range. The size range here can be processed according to the conventional processing and will not be repeated here;

[0017] 2) After processing the ends of the submarine cable, insert the anti-bending device, armor fixing device, clamp and gland at both ends respectively, pass the armor steel wire through the armor fixing device, and fold the armor steel wire back at the inner end thereof, then use the gland to compress the armor steel wire, and then use the clamp to perform secondary adjustment and clamping on the armor steel wire;

[0018] 3) hoisting the lower half of the shell to below the corresponding position of the submarine cable, moving the armor fixing device to the corresponding position, making the armor fixing device and the flange of the shell fit and fasten, and then hoisting the upper half of the shell to above the submarine cable, so that it is fixedly connected with the lower half;

[0019] 4) Put the anti-bending device onto the tail of the armor fixing device and fix it with bolts.

[0020] The beneficial effects of the utility model are:

[0021] By setting up the armor fixing device, the steel wire is first compressed by the gland, and then the clamp is used for secondary adjustment and clamping, which greatly reduces the probability of the steel wire loosening and ensures the stability of the steel wire connection. The armor fixing device of the utility model adopts an integrated design, which is easy to install and saves installation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the external structure and explosion structure of a specific implementation method of the submarine cable joint device of the utility model;

[0023] Figure 2 This is an assembly structure diagram of the armor fixing device of the submarine cable joint device of the utility model;

[0024] Figure 3 It is an exploded structural diagram of the armor fixing device of the submarine cable joint device of the utility model;

[0025] Figure 4 It is a schematic diagram of the structure of the cylinder of the armor fixing device of the utility model at different angles;

[0026] Figure 5 It is a structural schematic diagram of the anti-bending device of the armor fixing device of the utility model.

[0027] In the above drawings: 1, shell; 11, first flange; 2, armor fixing device; 21, cylinder; 211, installation step; 212, second flange; 22, gland; 23, clamping piece; 3, anti-bending device; 31, stepped hole. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific manner, and therefore cannot be understood as a limitation on the present invention. The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] like Figures 1 to 3 As shown, the utility model provides a submarine cable joint device suitable for a three-core submarine cable, including a shell 1, and armor fixing devices 2 are detachably installed at both ends of the shell 1, and the armor fixing device 2 includes a cylinder 21. Specifically, a first flange 11 is provided at both ends of the shell 1, and a second flange 212 corresponding to the first flange 11 is provided on the outer side of the cylinder 21, and the first flange 11 and the second flange 212 are fixed after being connected by screws (the hole on the first flange 11 is not shown in the figure). At the same time, a pressure cap 22 is buckled at one end of the cylinder 21 facing the shell 1, and a mounting gap is provided between the pressure cap 22 and the cylinder 21 for passing the armor steel wire. The middle part of the pressure cap 22 is a through hole, and the through hole is used to pass the submarine cable. A screw hole is provided at the end of the cylinder 21, and a mounting hole corresponding to the screw hole is provided on the pressure cap 22. Screws are installed in the mounting hole and the screw hole to fix the armor steel wire. A clamping member 23 is also sleeved on one side of the cylinder 21 near the gland 22. In this embodiment, the clamping member 23 is a clamping hoop, which is a ring-shaped member with an opening and is fastened with screws. In addition, an anti-bending device 3 is connected to the end of the cylinder 21 away from the shell 1. The outer portion of the anti-bending device 3 is conical, which can not only reduce the amount of material used, but also prevent the submarine cable from being bent and damaged.

[0030] Furthermore, the shell 1 is a split structure that can be split along the axial direction, and preferably a half structure can be adopted, so that the bottom of the shell 1 can be installed first, and the upper part of the shell 1 can be installed after the armored steel wire is fixed, which is convenient for operation and improves installation efficiency. The shell 1 can be made of 316L stainless steel, and its outer surface is coated with a layer of polypyrrole film, which has good anti-microbial adhesion performance and excellent anti-corrosion performance in the marine environment, and is suitable for the harsh marine environment. The shell 1 is also provided with a lifting ring and a glue injection hole, and the inside of the shell 1 is injected with glue through each glue injection hole, and the through hole is blocked afterwards to prevent glue leakage. At the same time, the sealing performance of the three-core submarine cable joint device is further improved by the glue injection treatment and the sealing and blocking treatment, so that the submarine cable joint device of the three-core submarine cable can be used at a deeper seabed.

[0031] The installation principle of the utility model is as follows: compared with the prior art, the utility model has a special design for the structure of fixing the armored steel wire, the pressure cap 22 is used to compress the armored steel wire once, and the clamping piece 23 is used to reinforce and compress the armored steel wire twice, and it can also be adjusted. When making a joint, the armored steel wire is passed through the armor fixing device 2, and the armored steel wire is folded back at its inner end. First, the pressure cap 22 is used to compress the steel wire, which can prevent the steel wire from sliding and better fix the steel wire; then the clamping piece 23 is used, which can be a steel wire clamp, to clamp and adjust the steel wire, which can adjust the deficiencies in the clamping operation and further clamp the steel wire.

[0032] In the above embodiment, by providing the armor fixing device 2, the steel wire is first compressed by the gland 22, and then the clamp is used for secondary adjustment and clamping, which greatly reduces the probability of the steel wire loosening and ensures the stability of the steel wire connection. The armor fixing device 2 of the utility model adopts an integrated design, which is easy to install and saves installation time.

[0033] like Figure 4 and Figure 5 As shown, an installation step 211 is provided at one end of the cylinder 21 away from the housing 1, and a stepped hole 31 matching the installation step 211 is provided on the inner side of the anti-bending device 3. The tail of the armor fixing device 2, i.e., the tail of the cylinder 21, adopts a stepped design, which can not only save materials and reduce production costs, but also make it more convenient and quick to wrap the waterproof tape during the installation process, thereby improving the installation efficiency.

[0034] The utility model also provides a connection method applicable to a three-core submarine cable, using the above submarine cable connection device applicable to a three-core submarine cable, comprising the following steps:

[0035] 1) Before installing the middle joint, heat and straighten the two ends of the submarine cable to be connected, and process each layer of the submarine cable end to make the size of each layer of the submarine cable within the required range. The size range here can be processed according to the conventional processing and will not be repeated here;

[0036] 2) After processing the ends of the submarine cable, insert the anti-bending device 3, the armor fixing device 2, the clamp and the gland 22 at both ends respectively, pass the armor steel wire through the armor fixing device 2, and fold the armor steel wire back at the inner end thereof, and then use the gland 22 to compress the armor steel wire, and then use the clamp to perform secondary adjustment and clamping on the armor steel wire;

[0037] 3) The lower half of the shell 1 is hoisted below the corresponding position of the submarine cable, and the armor fixing device 2 is moved to the corresponding position so that the flange of the armor fixing device 2 and the shell 1 are attached and fastened, and then the upper half of the shell 1 is hoisted above the submarine cable so that it is fixedly connected with the lower half;

[0038] 4) Slide the anti-bending device 3 onto the tail of the armor fixing device 2 and fix it with bolts.

[0039] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A submarine cable connector device suitable for a three-core submarine cable, characterized in that: The invention comprises a shell (1), wherein armor fixing devices (2) are detachably mounted at both ends of the shell (1), wherein the armor fixing device (2) comprises a cylinder (21), wherein a pressure cover (22) is buckled on one end of the cylinder (21) facing the shell (1), and a clamping member (23) is sleeved on one side of the cylinder (21) close to the pressure cover (22), and an installation gap is provided between the pressure cover (22) and the cylinder (21).

2. The submarine cable connector device for a three-core submarine cable according to claim 1, characterized in that: The middle part of the gland (22) is a through hole, the end of the cylinder (21) is provided with a screw hole, and the gland (22) is provided with a mounting hole corresponding to the screw hole.

3. The submarine cable connector device for a three-core submarine cable according to claim 1, characterized in that: The clamping member (23) is a clamping hoop.

4. The submarine cable connector device for a three-core submarine cable according to claim 1, characterized in that: An end of the cylinder (21) away from the shell (1) is connected to an anti-bending device (3).

5. The submarine cable connector device for a three-core submarine cable according to claim 4, characterized in that: An end of the cylinder (21) away from the shell (1) is provided with a mounting step (211), and an inner side of the anti-bending device (3) is provided with a stepped hole (31) matching the mounting step (211).

6. The submarine cable connector device for a three-core submarine cable according to claim 1, characterized in that: The two ends of the shell (1) are provided with first flanges (11), and the outer side of the cylinder (21) is provided with a second flange (212) corresponding to the first flange (11).

7. The submarine cable connector device for a three-core submarine cable according to claim 1, characterized in that: The housing (1) is a split structure that can be split along the axial direction.

8. The submarine cable connector device for a three-core submarine cable according to claim 1, characterized in that: The shell (1) is provided with a hanging ring and a glue injection hole.

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