A method for processing the end of an optoelectronic composite submarine cable using a traction net sleeve to pass through a J-shaped tube

Abstract

The invention relates to the technical field of submarine cable end processing, and specifically discloses a method for processing the end of an optoelectronic composite submarine cable by using a traction net sleeve to pass through a J-shaped tube, comprising the following steps: S1: pre-processing the end of the optoelectronic composite submarine cable; S2: installing a PE cap and injecting glue on the end of the optoelectronic composite submarine cable; S3: inserting the end of the optoelectronic composite submarine cable into the traction net sleeve; the invention improves the solidification time, water-proof, impact-resistant, extrusion-resistant and bending-resistant properties of the submarine cable end by improving the glue injection method, so that the end of the submarine cable can be solidified in a short time and has the same bending performance as the submarine cable body, and is impermeable when the end is facing extrusion, impact and bending, and has low requirements on operators, and the stability of various properties is high after the glue is confirmed, and the operation safety is high when the ends of three-core cables are processed simultaneously.

Description

Technical Field

[0001] The invention belongs to the technical field of submarine cable end processing, and in particular relates to an end processing method of an optoelectronic composite submarine cable using a traction net sleeve passing through a J-shaped tube. Background Art

[0002] Optical-electric composite submarine cables are important communication equipment laid on the seabed to establish connections between countries, between islands and inland areas, between oil platforms and inland areas, and cross-sea military facilities. With the increasing demand for energy in my country, the development of marine oil and gas and offshore wind power has also increased rapidly;

[0003] When laying the optoelectronic composite submarine cable, especially when passing through the J-tube platform, a traction net and a detwister need to be installed at the end of the submarine cable to fix the traction wire rope. Before installing the traction net at the end of the submarine cable, the end of the submarine cable needs to be processed so that the end of the submarine cable is impermeable under the squeeze of the traction net, and when passing through the curved part of the J-tube, it can withstand impact and be impermeable, and has a certain flexibility like the submarine cable body. Due to the influence of the sea tide when passing through the J-tube, it is safer to complete the treatment of the submarine cable end within 1-2 hours;

[0004] The end of the submarine cable is currently treated with lead sealing, which has high requirements on the operators and is time-consuming. During the process of inserting the J-tube, if the impact force is too large, it is easy to cause the lead seal to be damaged and water to leak. Summary of the invention

[0005] The object of the present invention is to provide a method for processing the end of an optoelectronic composite submarine cable using a traction net sleeve through a J-tube, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A method for processing the end of an optoelectronic composite submarine cable using a traction net sleeve through a J-shaped tube, comprising:

[0008] The following steps are involved:

[0009] S1: Pretreatment of the end of the optoelectronic composite submarine cable;

[0010] S2: Install PE cap at the end of the optical-electric composite submarine cable and inject glue;

[0011] S3: The end of the optoelectronic composite submarine cable is put into the traction net.

[0012] Preferably, the step S1 includes:

[0013] S1.1: Use scissors and utility knife to remove the outer PP rope at the end of the submarine cable;

[0014] S1.2: Use wire cutters and grinders to cut off the armor wires at the ends of the submarine cable;

[0015] S1.3: Use scissors and utility knife to remove the inner sheath PP rope and rubber-coated tape at the end of the submarine cable;

[0016] S1.4: After taking out the optical cable, use a utility knife to cut off the filler strip at the end of the submarine cable;

[0017] S1.5: Use a hand hoist and sling to separate the three-core cable cores at the end of the submarine cable and fix them with wooden blocks;

[0018] S1.6: Use a utility knife and pliers to strip off the PE outer sheath of the single-core cable core at the end of the submarine cable;

[0019] S1.7: Use a blowtorch, stearic acid, kerosene and a machine cloth to clean the asphalt on the lead sheath of the single-core cable core at the end of the submarine cable and remove the PE outer sheath;

[0020] S1.8: Use anhydrous ethanol and a dust-free cloth to clean the end conductor, inner and outer shielding, insulation and lead sheath of the single-core cable core at the end of the submarine cable.

[0021] Preferably, the step S2 includes:

[0022] S2.1: Use waterproof self-adhesive tape to radially raise the lead sheath of the single-core cable core at the end of the submarine cable after the PE outer sheath is stripped off;

[0023] S2.2: Mix and squeeze the AB two-component adhesive on the inner and outer shielding and insulation positions of the single-core cable end face of the submarine cable end, and apply it evenly with a brush;

[0024] S2.3: Use scissors and a utility knife to make two holes on the upper end of the PE cap, a vent hole and an observation hole, and a glue injection hole on the lower end;

[0025] S2.4: Put the PE sealing cap onto the high end of the lead sheath waterproof self-adhesive tape pad of the single-core cable core at the end of the submarine cable;

[0026] S2.5: Use waterproof self-adhesive tape to wrap the tail end of the PE sealing cap around the lead sheath waterproof self-adhesive tape of the single-core cable core at the end of the submarine cable for 3 layers of sealing, and then use PVC tape to strengthen the sealing;

[0027] S2.6: The exhaust holes and observation holes are heightened with waterproof self-adhesive tape;

[0028] S2.7: Mix the AB two-component adhesive and inject it into the PE sealing cap sleeve from the injection hole at the bottom until the adhesive is injected to the elevated part of the waterproof self-adhesive tape around the exhaust hole and the observation hole.

[0029] Preferably, the step S3 includes:

[0030] S3.1: The three-core cable cores are treated in the same way. After solidification for 20 minutes, the three-core cable cores are tightened with a tightening belt, and then wrapped with two layers of semi-overlapping rubberized cloth tape together with the waterproof optical cable. The rubberized cloth tape is then fixed with glass fiber tape. The head of the traction net is cushioned with some machine cleaning cloth, and finally the traction net is put into place.

[0031] S3.2: After the traction net is put on, three iron wires are evenly tied within a length of 200mm from the tail to the head.

[0032] Preferably, the coagulation time in step S3.1 is 20 minutes.

[0033] Preferably, in step S3.1, the iron wire is bundled within a length of 200 mm from the tail to the head of the traction net.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] The present invention improves the solidification time, water-proof, impact-resistant, extrusion-resistant and bending-resistant properties of the submarine cable end by improving the glue injection method. The invention can solidify in a short time and has the same bending performance as the submarine cable body. The end is waterproof when facing extrusion, impact and bending, and has low requirements for operators. After the glue is confirmed, the stability of various properties is high. When the three-core cable ends are processed simultaneously, the operation safety is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a flow chart of the present invention;

[0037] Figure 2 A side view of a submarine cable of the present invention having a PE cap installed;

[0038] Figure 3 This is a schematic diagram of the internal structure of a submarine cable installed with a PE cap according to the present invention;

[0039] Figure 4 It is a schematic diagram of the installation of the traction net sleeve of the present invention.

[0040] In the figure: 1. PE outer sheath; 2. Lead sheath; 3. Waterproof self-adhesive tape and PVC tape; 4. PE sealing cap; 5. Drainage hole and observation hole; 6. Waterproof self-adhesive tape with high end; 7. AB two-component adhesive; 8. Glue injection hole; 9. Waterproof self-adhesive tape pad high end; 10. Submarine cable body; 11. Traction net; 12. Iron wire; DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Example:

[0043] See also Figure 1-Figure 4 As shown, a method for processing the end of an optoelectronic composite submarine cable using a traction net sleeve through a J-shaped tube comprises the following steps:

[0044] S1: Pretreatment of the end of the optoelectronic composite submarine cable;

[0045] S1.1: Use scissors and utility knife to strip the outer PP rope of the cable end (a certain distance);

[0046] S1.2: Use wire cutters and grinders to cut off the armor wires at the end of the submarine cable (at a certain distance);

[0047] S1.3: Use scissors and utility knife to remove the inner sheath PP rope and rubber-coated tape at the end of the submarine cable (at a certain distance);

[0048] S1.4: After taking out the optical cable, use a utility knife to cut off the filler strip at the end of the submarine cable (at a certain distance);

[0049] S1.5: Use a hand-operated hoist and sling to separate the three-core cable cores at the end of the submarine cable (after a certain angle) and fix them with a wooden block;

[0050] S1.6: Use a utility knife and pliers to strip off the PE outer sheath of the single-core cable core (a certain distance) at the end of the submarine cable;

[0051] S1.7: Use a blowtorch, stearic acid, kerosene and a machine cloth to clean the end of the submarine cable, remove the PE outer sheath of the single-core cable core, and apply asphalt to the lead sheath;

[0052] S1.8: Use anhydrous ethanol and a dust-free cloth to clean the end conductor, inner and outer shielding, insulation and lead sheath of the single-core cable core at the end of the submarine cable;

[0053] The submarine cable 10 includes a core, a lead sheath 2 located on the inside and a PE outer sheath located on the outside. A PE cap 4 is installed at one end of the submarine cable body 10. A waterproof self-adhesive tape and a PVC tape 3 are also arranged between the submarine cable 10 and the PE cap 4. A drainage hole and an observation hole 5 are respectively opened on one side of the PE cap 4, and a glue injection hole 8 is opened on the other side of the PE cap 4. A waterproof self-adhesive tape plus high end 6 is arranged at the outer end of the PE cap 4, and an AB two-component adhesive 7 is arranged inside the PE cap 4. A waterproof self-adhesive tape pad high end 9 is arranged at the outer end of the submarine cable 10, and the waterproof self-adhesive tape pad high end 9 is located on the inner side of the PE cap 4. A traction net 11 is arranged at one end of the submarine cable 10, and an iron wire 12 is arranged at the outer end of the traction net 11.

[0054] S2: Install PE cap at the end of the optical-electric composite submarine cable and inject glue;

[0055] S2.1: Use waterproof self-adhesive tape to remove the PE outer sheath of the single-core cable core at the end of the submarine cable and radially raise the lead sheath at a certain distance from the end face (a certain distance);

[0056] S2.2: Mix and squeeze the AB two-component adhesive onto the inner and outer shielding and insulation parts of the single-core cable end face at the end of the submarine cable, and apply it evenly with a brush;

[0057] S2.3: Use scissors and a utility knife to make two holes on the upper end of the PE cap, a vent hole and an observation hole, and a glue injection hole on the lower end;

[0058] S2.4: Put the PE sealing cap onto the high end of the lead sheath waterproof self-adhesive tape pad of the single-core cable core at the end of the submarine cable;

[0059] S2.5: Use waterproof self-adhesive tape to wrap the tail end of the PE sealing cap around the lead sheath waterproof self-adhesive tape of the single-core cable core at the end of the submarine cable for 3 layers of sealing, and then use PVC tape to strengthen the sealing;

[0060] S2.6: The vent hole and observation hole are raised with waterproof self-adhesive tape to form a high end of the waterproof self-adhesive tape to prevent the glue from shrinking during solidification;

[0061] S2.7: Mix the AB two-component adhesive and inject it into the PE sealing cap sleeve from the glue injection hole at the bottom until the adhesive is injected to the elevated part of the waterproof self-adhesive tape around the vent hole and the observation hole;

[0062] S3: The end of the optoelectronic composite submarine cable is put into the traction net;

[0063] S3.1: The three-core cable cores are treated in the same way. After solidification for 20 minutes, the three-core cable cores are tightened with a tightening belt, and then wrapped with two layers of semi-overlapping rubberized cloth tape together with the waterproof optical cable. The rubberized cloth tape is then fixed with glass fiber tape. The head of the traction net is cushioned with some machine cleaning cloth, and finally the traction net is put into place.

[0064] S3.2: After the traction net is put on, three iron wires are evenly tied within a length of 200mm from the tail to the head to distribute the traction force on the armored steel wires and reduce the lateral pressure of the armored steel wires when the submarine cable head is stripped.

[0065] The present invention improves the solidification time, water-proof, impact-resistant, extrusion-resistant and bending-resistant properties of the submarine cable end by improving the glue injection method. The invention can solidify in a short time and has the same bending performance as the submarine cable body. The end is waterproof when facing extrusion, impact and bending, and has low requirements for operators. After the glue is confirmed, the stability of various properties is high. When the three-core cable ends are processed simultaneously, the operation safety is high.

[0066] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for processing the end of an optoelectronic composite submarine cable using a traction net sleeve through a J-shaped tube, characterized in that: The following steps are involved: S1: Pretreatment of the end of the optoelectronic composite submarine cable; S2: Install PE cap at the end of the optical-electric composite submarine cable and inject glue; S3: The end of the optoelectronic composite submarine cable is put into the traction net.

2. The end processing method of an optoelectronic composite submarine cable using a traction net sleeve through a J-shaped tube according to claim 1 is characterized in that: The step S1 includes: S1.1: Use scissors and utility knife to remove the outer PP rope at the end of the submarine cable; S1.2: Use wire cutters and grinders to cut off the armor wires at the ends of the submarine cable; S1.3: Use scissors and utility knife to remove the inner sheath PP rope and rubber-coated tape at the end of the submarine cable; S1.4: After taking out the optical cable, use a utility knife to cut off the filler strip at the end of the submarine cable; S1.5: Use a hand hoist and sling to separate the three-core cable cores at the end of the submarine cable and fix them with wooden blocks; S1.6: Use a utility knife and pliers to strip off the PE outer sheath of the single-core cable core at the end of the submarine cable; S1.7: Use a blowtorch, stearic acid, kerosene and a machine cloth to clean the asphalt on the lead sheath of the single-core cable core at the end of the submarine cable and remove the PE outer sheath; S1.8: Use anhydrous ethanol and a dust-free cloth to clean the end conductor, inner and outer shielding, insulation and lead sheath of the single-core cable core at the end of the submarine cable.

3. The end processing method of an optoelectronic composite submarine cable using a traction net sleeve through a J-shaped tube according to claim 1 is characterized in that: The step S2 includes: S2.1: Use waterproof self-adhesive tape to radially raise the lead sheath of the single-core cable core at the end of the submarine cable after the PE outer sheath is stripped off; S2.2: Mix and squeeze the AB two-component adhesive onto the inner and outer shielding and insulation positions of the single-core cable end face at the end of the submarine cable, and apply it evenly with a brush; S2.3: Use scissors and a utility knife to make two holes on the upper end of the PE cap, a vent hole and an observation hole, and a glue injection hole on the lower end; S2.4: Put the PE sealing cap onto the high end of the lead sheath waterproof self-adhesive tape pad of the single-core cable core at the end of the submarine cable; S2.5: Use waterproof self-adhesive tape to wrap the tail end of the PE sealing cap around the lead sheath waterproof self-adhesive tape of the single-core cable core at the end of the submarine cable for 3 layers of sealing, and then use PVC tape to strengthen the sealing; S2.6: The exhaust holes and observation holes are heightened with waterproof self-adhesive tape; S2.7: Mix the AB two-component adhesive and inject it into the PE sealing cap sleeve from the injection hole at the bottom until the adhesive is injected to the elevated part of the waterproof self-adhesive tape around the exhaust hole and the observation hole.

4. The end processing method of an optoelectronic composite submarine cable using a traction net sleeve through a J-shaped tube according to claim 1 is characterized in that: The step S3 includes: S3.1: The three-core cable cores are treated in the same way. After solidification for 20 minutes, the three-core cable cores are tightened with a tightening tape, and then wrapped with two layers of semi-overlapping rubberized tape together with the waterproof optical cable. The rubberized tape is then fixed with glass fiber tape. The head of the traction net is cushioned with some machine-wiping cloth, and finally the traction net is put in. S3.2: After the traction net is put on, three iron wires are evenly tied within a length of 200mm from the tail to the head.

5. The end processing method of an optoelectronic composite submarine cable using a traction net sleeve through a J-shaped tube according to claim 4 is characterized in that: The coagulation time in step S3.1 is 20 minutes.

6. The end processing method of an optoelectronic composite submarine cable using a traction net sleeve through a J-shaped tube according to claim 4 is characterized in that: In the step S3.1, the iron wire is bundled within a length of 200 mm from the tail to the head of the traction net.

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