CN213716548U - Longitudinal water-blocking conductor for watertight cable and gluing equipment thereof - Google Patents
Longitudinal water-blocking conductor for watertight cable and gluing equipment thereof Download PDFInfo
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- CN213716548U CN213716548U CN202022635038.XU CN202022635038U CN213716548U CN 213716548 U CN213716548 U CN 213716548U CN 202022635038 U CN202022635038 U CN 202022635038U CN 213716548 U CN213716548 U CN 213716548U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model provides a longitudinal water-blocking conductor for watertight cable which characterized in that: comprises a central monofilament, an outer layer monofilament and water-blocking glue; the cross section of a longitudinal water-blocking conductor is taken as a reference, the longitudinal water-blocking conductor, a central monofilament and outer layer monofilaments are all round, the diameter of the central monofilament is smaller than that of the outer layer monofilaments, the central monofilament is located at the central position of the water-blocking conductor, the outer layer monofilaments are centrally symmetric and mutually closely and uniformly distributed in the circumferential direction of the central monofilament, water-blocking glue is filled in gaps between the central monofilament and the outer layer monofilaments and gaps between the outer layer monofilaments, and the water-blocking glue tightly wraps the central monofilaments; and taking the longitudinal section of the longitudinal water-blocking conductor as a reference, and continuously filling the water-blocking glue in gaps between the central monofilament and the outer layer monofilaments and gaps between the outer layer monofilaments.
Description
Technical Field
The utility model relates to an underwater cable field, in particular to watertight type cable is with vertical conductor that blocks water and rubber coating equipment thereof.
Background
The watertight cable is a high watertight and winding-resistant multi-core comprehensive cable suitable for the fields of ships, offshore oil platforms, deep sea resource detection and the like, is also suitable for leading wires of various submersible motors, and is responsible for connecting submersible pumps and various underwater working electrical appliances from underwater to overwater power supplies. With the progress of science and technology, people continuously go deep into ocean exploration, and the demand on watertight cables is greater and greater.
The watertight type cable may be classified into a transverse watertight type cable and a longitudinal watertight type cable according to a sealing manner. The longitudinal watertight cable is generally used in a watertight penetration part, and when the sheath is damaged, the flowing speed of water entering the cable is delayed by virtue of the cable sheath and the sealing filler inside the cable, so that the reliability of equipment is improved.
However, whether the longitudinal watertight cable can work normally under water is critical to the watertightness of the conductor, i.e. the water-blocking performance. When the existing longitudinal water-blocking conductor is manufactured, 7 monofilaments (1 monofilament and 6 monofilaments all around) with the same diameter are normally stranded (as shown in figure 1), and water-blocking yarns or water-blocking ointment are used for filling during stranding. The water-blocking ointment is mostly a bi-component material, is difficult to process, is easy to crosslink at a die opening, and needs to be cleaned, so that the continuity of the filling effect of the water-blocking ointment is poor, the hundred percent filling cannot be guaranteed, the filling between monofilaments is discontinuous, and the processable length of the water-blocking conductor is influenced.
Therefore, how to obtain a longitudinal water-blocking conductor with better water-blocking performance for a watertight cable is the research subject of the utility model.
Disclosure of Invention
The utility model provides a watertight type cable is with vertical conductor that blocks water and rubber coating equipment thereof, its purpose is to solve the current vertical conductor that blocks water and glue the problem that the performance of blocking water that the packing discontinuity leads to is limited.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a longitudinal water-blocking conductor for watertight cable which characterized in that: comprises a central monofilament, a plurality of outer layer monofilaments and water-blocking glue;
the cross section of the longitudinal water-blocking conductor is circular, and the cross sections of the central monofilament and the outer layer monofilament are also circular; the diameter of the central monofilament is smaller than that of the outer layer monofilaments, the central monofilament is located at the central position of the water-blocking conductor, and the outer layer monofilaments are distributed in central symmetry in the circumferential direction of the central monofilament and are tightly attached to each other; meanwhile, each outer layer monofilament is in clearance fit with the central monofilament;
wherein, the gaps between the central monofilament and each outer layer monofilament are filled with water-blocking glue to form that the water-blocking glue tightly coats the central monofilament; gaps among the outer layer monofilaments are filled with water-blocking glue;
and observing from the longitudinal section of the longitudinal water-blocking conductor, the water-blocking glue is continuously filled in the gaps between the central monofilament and the outer layer monofilaments and the gaps between the outer layer monofilaments.
The utility model provides a rubber coating equipment of longitudinal water-blocking conductor for watertight type cable which characterized in that:
gluing the periphery of the central monofilament of the longitudinal water-blocking conductor and gluing gaps among the outer layer monofilaments;
the gluing equipment comprises a rubber cylinder, a heating ring and a first die;
the packing element is a bottle-shaped structure which is transversely placed, a wire core inlet is formed in the bottom of the bottle-shaped structure, a heating ring is arranged on the periphery of the bottle body of the bottle-shaped structure, a first mold used for determining the outer diameter of a product is arranged at the bottle neck of the bottle-shaped structure, a glue injection port is further formed in the packing element and is arranged on the side portion of the bottle-shaped structure and between the heating ring and the first mold.
1. In the scheme, the central monofilament and the outer layer monofilament are both copper monofilaments.
2. In the above scheme, the cross section of the longitudinal water-blocking conductor is taken as a reference, and the number of the outer layer monofilaments is 6.
And 3, in the scheme, the water-blocking conductor gluing device further comprises a second die which is defined to move from front to back when the water-blocking conductor is glued, and the second die is located behind the first die and used for removing redundant glue and burrs on the surface of a product.
The related explanation of the utility model is as follows:
1. the technical scheme is that the diameter of a central monofilament is reduced by 0.05 mm-0.1 mm, the diameter of an outer layer monofilament is increased by 0.05 mm-0.1 mm, the outer diameter of the central monofilament is coated with water-blocking glue, the outer diameter of the central monofilament is consistent with that of the outer layer monofilament, and the central monofilament and the outer layer monofilament are normally twisted to meet the requirement of invariable resistance.
2. In the technical scheme, the water-resistant adhesive is a single-component insulating water-resistant adhesive, is white and viscous, becomes a fluid when heated to 170-180 ℃, is cured when encountering water in the air after being extruded, has no substance separated out in the curing process, becomes a thermosetting material after being cured, and has the temperature resistance level of 150 ℃.
3. In the above scheme, when the rubber coating equipment used, put into the glue that blocks water that has melted from the injecting glue mouth and make it be full of gluey bucket, the sinle silk got into from the sinle silk import, stretches out from first mould.
4. In the scheme, two dies can be used, and the water blocking conductor is defined to move from front to back when being coated with glue;
the first die and the second die are arranged in tandem, wherein the first die on the front side is used for determining the outer diameter of a product, and the second die on the rear side is used for removing redundant sizing materials and burrs on the surface of the product.
5. In the above scheme, the processing technology of the longitudinal water-blocking conductor comprises the following steps:
firstly, wire drawing: drawing copper monofilaments of two specifications (namely a central monofilament and an outer layer monofilament, wherein the diameter of the central monofilament is smaller than that of the outer layer monofilament) by adopting drawing equipment;
gluing the central monofilament: selecting a wire drawing die with the diameter equal to that of the outer layer monofilament, and enabling the central monofilament to pass through the gluing equipment, so that a layer of water-blocking glue is coated on the outer layer of the central monofilament, and the outer diameter of the coated water-blocking glue is consistent with the diameter of the outer layer monofilament;
thirdly, stranding: the central monofilament coated with the water-blocking glue and 6 outer layer monofilaments are subjected to normal pressing and stranding by adopting single stranding equipment, so that the water-blocking glue is tightly filled in gaps between the central monofilament and each outer layer monofilament to obtain a primary processed conductor;
fourthly, gluing the conductor: and selecting a die which is 0.1 mm-0.2 mm larger than the outer diameter of the conductor to be initially processed, and enabling the conductor to pass through the gluing equipment again to enable the water blocking glue to fill gaps among the monofilaments on the outer layer of the conductor, so as to obtain the longitudinal water blocking conductor.
The method using wire drawing and single twisting equipment is the prior art and is not described herein.
6. The utility model discloses an adjustment conductor structure (reduce central monofilament, increase outer monofilament) and two-step method rubber coating (central monofilament rubber coating + primary processing conductor rubber coating), can obviously improve small cross-section conductor rubber coating stability and production length (can reach infinitely long theoretically), can make the glue that blocks water vertically be the state of filling in succession at the conductor, make follow-up product watertight cable length prolong to more than 10km within by current 1~2km, the use of the watertight terminal box that has significantly reduced, watertight stability has been improved. Meanwhile, the water-blocking glue has excellent adhesive force and water-blocking property, so that gaps between conductors can be tightly filled, and the water-blocking glue can reach more than 10MPa (1000 m water depth) by testing according to a water-tight experimental method of GJB 1916, and is far higher than the conventional 3.5-5 MPa, so that the water-tight capacity of the wire is greatly improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a prior art longitudinal water-blocking conductor;
FIG. 2 is a schematic cross-sectional view of the longitudinal water-blocking conductor of the present invention;
figure 3 is the utility model discloses vertical conductor rubber coating equipment schematic diagram that blocks water.
In the above drawings: 1. a central monofilament; 2. outer layer monofilaments; 3. water-blocking glue; 4. a rubber cylinder; 41. a wire core inlet; 42. a glue injection port; 5. heating a ring; 6. a first mold; 7. and a second mold.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
example (b): longitudinal water-blocking conductor for watertight cable
As shown in fig. 2, a longitudinal water-blocking conductor for a watertight cable comprises a central monofilament 1, a plurality of outer monofilaments 2 and a water-blocking glue 3;
the cross section of the longitudinal water-blocking conductor is circular, and the cross sections of the central monofilament 1 and the outer layer monofilament 2 are also circular; the diameter of the central monofilament 1 is smaller than that of the outer layer monofilament 2, the central monofilament 1 is located at the central position of the water blocking conductor, and the outer layer monofilaments 2 are distributed in central symmetry in the circumferential direction of the central monofilament 1 and are tightly attached to each other; meanwhile, each outer layer monofilament 2 is in clearance fit with the central monofilament 1;
wherein, the gap between the central monofilament 1 and each outer layer monofilament 2 is filled with a water-blocking glue 3, so that the central monofilament 1 is tightly coated by the water-blocking glue 3; gaps among the outer layer monofilaments 2 are filled with water-blocking glue 3;
and when viewed from the longitudinal section of the longitudinal water-blocking conductor, the water-blocking glue 3 is continuously filled in the gaps between the central monofilament 1 and the outer layer monofilaments 2 and the gaps between the outer layer monofilaments 2.
The central monofilament 1 and the outer layer monofilament 2 are both copper monofilaments.
The outer layer of monofilaments 2 has 6 filaments, referred to the cross-section of the longitudinal water-blocking conductor.
Example (b): gluing equipment for longitudinal water-blocking conductor for watertight cable
As shown in fig. 3, a gluing device for a longitudinal water-blocking conductor for a watertight cable is used for gluing the periphery of a central monofilament 1 of the longitudinal water-blocking conductor and gluing gaps among outer layer monofilaments 2;
the gluing equipment comprises a rubber cylinder 4, a heating ring 5 and a first mould 6;
the packing element 4 is a bottle-shaped structure which is transversely placed, a wire core inlet 41 is arranged at the bottom of the bottle-shaped structure, a heating ring 5 is arranged around the bottle body of the bottle-shaped structure, a first mold 6 for determining the outer diameter of a product is arranged at the bottle neck of the bottle-shaped structure, a glue injection port 42 is further arranged on the packing element 4, and the glue injection port 42 is arranged at the side part of the bottle-shaped structure and is positioned between the heating ring 5 and the first mold 6.
The water-blocking conductor glue-applying device further comprises a second mold 7, wherein the second mold 7 is defined to move from front to back when the water-blocking conductor is applied with glue, and the second mold 7 is located behind the first mold 6 and used for removing redundant glue and burrs on the surface of a product.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (5)
1. The utility model provides a longitudinal water-blocking conductor for watertight cable which characterized in that: comprises a central monofilament (1), a plurality of outer layer monofilaments (2) and a water-blocking glue (3);
the cross section of the longitudinal water-blocking conductor is circular, and the cross sections of the central monofilament (1) and the outer layer monofilament (2) are also circular; the diameter of the central monofilament (1) is smaller than that of the outer layer monofilaments (2), the central monofilament (1) is positioned at the central position of the water-blocking conductor, and the outer layer monofilaments (2) are centrally and symmetrically distributed in the circumferential direction of the central monofilament (1) and are tightly attached to each other; meanwhile, each outer layer monofilament (2) is in clearance fit with the central monofilament (1);
wherein, the gaps between the central monofilament (1) and each outer layer monofilament (2) are filled with water-blocking glue (3), so that the central monofilament (1) is tightly coated by the water-blocking glue (3); gaps among the outer layer monofilaments (2) are filled with water-blocking glue (3);
and when viewed from the longitudinal section of the longitudinal water-blocking conductor, the water-blocking glue (3) is continuously filled in the gaps between the central monofilament (1) and the outer layer monofilaments (2) and the gaps between the outer layer monofilaments (2).
2. The longitudinal water-blocking conductor for watertight cables according to claim 1, wherein: the central monofilament (1) and the outer layer monofilament (2) are both copper monofilaments.
3. The longitudinal water-blocking conductor for watertight cables according to claim 1, wherein: and 6 outer layer monofilaments (2) are taken as reference cross sections of the longitudinal water-blocking conductors.
4. The utility model provides a rubber coating equipment of longitudinal water-blocking conductor for watertight type cable which characterized in that:
-gluing the periphery of the central monofilament (1) of a longitudinal water-blocking conductor according to claim 1, and the gaps between the outer monofilaments (2);
the gluing equipment comprises a rubber cylinder (4), a heating ring (5) and a first die (6);
packing element (4) is the bottle column structure of horizontal placing, the bottom of bottle column structure is equipped with sinle silk import (41), body a week of bottle column structure is equipped with heating ring (5), the bottleneck department of bottle column structure is equipped with one and is used for confirming first mould (6) of product external diameter, packing element (4) still is equipped with a injecting glue mouth (42), injecting glue mouth (42) are located the lateral part of bottle column structure just is located between heating ring (5) and first mould (6).
5. The apparatus for coating a watertight-type cable with a longitudinal water-blocking conductor according to claim 4, wherein: the water-blocking conductor gluing machine further comprises a second mould (7) which is defined to move from front to back when the water-blocking conductor is glued, and the second mould (7) is located behind the first mould (6) and used for removing redundant glue and burrs on the surface of a product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022635038.XU CN213716548U (en) | 2020-11-13 | 2020-11-13 | Longitudinal water-blocking conductor for watertight cable and gluing equipment thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022635038.XU CN213716548U (en) | 2020-11-13 | 2020-11-13 | Longitudinal water-blocking conductor for watertight cable and gluing equipment thereof |
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| CN213716548U true CN213716548U (en) | 2021-07-16 |
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| CN202022635038.XU Active CN213716548U (en) | 2020-11-13 | 2020-11-13 | Longitudinal water-blocking conductor for watertight cable and gluing equipment thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114864184A (en) * | 2022-03-31 | 2022-08-05 | 宁波东方电缆股份有限公司 | Manufacturing equipment and method of deep-sea water-blocking conductor |
| CN117153495A (en) * | 2023-10-20 | 2023-12-01 | 江苏亨通高压海缆有限公司 | Submarine cable water-blocking adhesive coating equipment |
-
2020
- 2020-11-13 CN CN202022635038.XU patent/CN213716548U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114864184A (en) * | 2022-03-31 | 2022-08-05 | 宁波东方电缆股份有限公司 | Manufacturing equipment and method of deep-sea water-blocking conductor |
| CN114864184B (en) * | 2022-03-31 | 2024-04-16 | 宁波东方电缆股份有限公司 | Manufacturing method of deep sea water-blocking conductor |
| CN117153495A (en) * | 2023-10-20 | 2023-12-01 | 江苏亨通高压海缆有限公司 | Submarine cable water-blocking adhesive coating equipment |
| CN117153495B (en) * | 2023-10-20 | 2024-02-09 | 江苏亨通高压海缆有限公司 | Submarine cable water-blocking adhesive coating equipment |
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