CN219626899U - Waterproof joint for aluminum wire shielding aluminum core cable - Google Patents
Waterproof joint for aluminum wire shielding aluminum core cable Download PDFInfo
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- CN219626899U CN219626899U CN202223287099.7U CN202223287099U CN219626899U CN 219626899 U CN219626899 U CN 219626899U CN 202223287099 U CN202223287099 U CN 202223287099U CN 219626899 U CN219626899 U CN 219626899U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The utility model discloses a waterproof joint for an aluminum wire shielding aluminum core cable, which comprises a joint connecting pipe, a silicon rubber main body and a semiconductive layer which are sequentially sleeved from inside to outside, wherein the outer sides of two ends of the joint aluminum wire shielding layer are respectively lapped with an inner waterproof glue mud layer, the other end of the inner waterproof glue mud layer, which is far away from the joint aluminum wire shielding layer, is used for being lapped on an outer sheath at the end part of the cable, the outer side of the waterproof insulating layer is respectively lapped with an outer waterproof glue mud layer, and the other end of the outer waterproof glue mud layer, which is far away from the waterproof insulating layer, is used for being lapped on the outer sheath at the end part of the cable; the waterproof joint for the aluminum wire shielding aluminum core cable does not need to use a crimping connecting pipe and a copper shell, and is more convenient to install.
Description
Technical Field
The utility model relates to the technical field of cable joints, in particular to a waterproof joint for an aluminum wire shielding aluminum core cable.
Background
In recent years, more and more 35kV industrial projects in China begin to use aluminum alloy cables, and particularly in the new energy power generation industry. The current joint conductor connection method mainly comprises surrounding pressure type and spot pressure type, and the waterproof mode mainly comprises a mode of mechanically locking a stainless steel cylinder and adopting lead skin welding for a copper shell.
Although the cost of the cable is greatly reduced, the failure rate of the 35kV joint is greatly increased. Based on the consensus of the current industry, the main reason is that the contact resistance at the connecting pipe is overlarge and then heats due to the fact that the connecting pipe and the crimping mode are not unified and standardized, so that potential safety hazards are brought. In severe cases, short-circuit explosion and even spontaneous combustion can be caused, so that the power transmission of the whole circuit is affected, and economic and even life and property losses are caused. The waterproof mode of mechanical locking may lead to structural degradation over time. The copper shell lead skin welding mode is not only difficult to install, but also can have the problems of trachoma, air holes and lead block falling.
Disclosure of Invention
The utility model aims to overcome the defects, and provides the waterproof joint for the aluminum wire shielding aluminum core cable, which is waterproof without a copper shell and is more convenient to install.
The utility model provides a waterproof joint for an aluminum wire shielding aluminum core cable, which comprises a joint connecting pipe, a silicon rubber main body and a semiconductive layer, wherein the joint connecting pipe, the silicon rubber main body and the semiconductive layer are sequentially sleeved from inside to outside, an inner waterproof cement layer is respectively lapped on the outer sides of two ends of the joint aluminum wire shielding layer, the other end of the inner waterproof cement layer, which is far away from the joint aluminum wire shielding layer, is used for being lapped on an outer sheath of the end part of the cable, an outer waterproof cement layer is respectively lapped on the outer side of the waterproof insulating layer, and the other end of the outer waterproof cement layer, which is far away from the waterproof insulating layer, is used for being lapped on the outer sheath of the end part of the cable.
Further, the waterproof glue coating also comprises a protective layer, wherein the protective layer is coated on the outer sides of the waterproof insulating layer and the two inner waterproof glue mud layers.
Further, the protective layer is formed by wrapping the PVC belt on the outer sides of the waterproof insulating layer and the two inner waterproof daub layers in a reciprocating manner for two times.
Further, the joint aluminum wire shielding layer is a shielding layer formed by wrapping a plurality of aluminum wires on the outer side of the semiconductive layer from two ends of the semiconductive layer respectively, the waterproof joint for the aluminum wire shielding aluminum core cable further comprises an aluminum wire connecting pipe, and the aluminum wire connecting pipe is in crimping connection with the end parts of the plurality of aluminum wires.
Further, the aluminum wire connector further comprises a copper mesh layer, wherein the copper mesh layer is coated on the outer side of the aluminum wire connector shielding layer, and the inner waterproof cement layer is lapped on the copper mesh layer.
Further, the copper mesh layer comprises 2-4 layers of copper mesh.
Further, the joint connecting pipe comprises a pipe body, an internal thread through hole and a screwing-off type bolt, wherein the internal thread through hole is formed on the pipe wall of the pipe body, and the screwing-off type bolt is in threaded connection with the internal thread through hole.
Further, one end of the twisting-off type bolt far away from the center of the pipe body and the internal thread through hole form a blind hole together, and the waterproof joint for the aluminum wire shielding aluminum core cable further comprises a metal repairing agent, wherein the metal repairing agent is filled in the blind hole.
Further, the inner waterproof cement layer has 4-6 layers of waterproof cement.
Further, the outer waterproof cement layer has 4-6 layers of waterproof cement.
The beneficial effects of the utility model are as follows: according to the waterproof connector for the aluminum wire shielding aluminum core cable, the pressing connection pipe is not needed, and the screwing-off type bolt connection pipe is used, so that unified connection standard is facilitated. Meanwhile, in the waterproof measure, the copper shell is not selected, waterproof treatment is carried out through the waterproof insulating tape and waterproof cement, so that the installation is better, more convenient and time-saving, and meanwhile, compared with the prior art that the aluminum wire ends in the aluminum wire shielding layer are connected onto the copper shell one by one, the aluminum wire end is integrally crimped by the connecting pipe, the installation is more convenient and faster, the connection is firmer, the copper net is wrapped outside the aluminum wire shielding layer, and the connection stability of the aluminum wire is improved.
Drawings
Fig. 1 is a schematic structural view of a waterproof joint for an aluminum wire-shielded aluminum core cable in an embodiment of the utility model;
fig. 2 is an enlarged partial view of a waterproof joint for an aluminum wire-shielded aluminum core cable in an embodiment of the utility model.
In the figure 1, a joint connecting pipe; 2. a metal repair agent; 3. an aluminum wire connecting pipe; 4. a semiconductive layer; 5. a joint aluminum wire shielding layer; 6. a copper mesh layer; 7. a waterproof insulating layer; 8. an inner waterproof cement layer; 9. a protective layer; 10. a silicone rubber body; 11. an outer waterproof cement layer; 12. a conductor; 13. an insulating layer; 14. an outer shielding layer; 15. an aluminum wire shielding layer; 16. an outer sheath.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Fig. 1 is a schematic structural view of a waterproof joint for an aluminum wire-shielded aluminum core cable in an embodiment of the utility model; fig. 2 is an enlarged partial view of a waterproof joint for an aluminum wire-shielded aluminum core cable in an embodiment of the utility model.
As shown in fig. 1 and 2, a waterproof joint for an aluminum wire-shielded aluminum core cable in this embodiment includes a joint connection pipe 1, a silicone rubber body 10, a semiconductive layer 4, a joint aluminum wire shielding layer 5, two inner waterproof cement layers 8, a waterproof insulating layer 7, and two outer waterproof cement layers 11.
The joint connection pipe 1 includes a pipe body, a plurality of female screw through holes, and a plurality of screw-off bolts. A plurality of internal thread through holes are formed on the pipe wall of the pipe body at intervals. The tube body is adapted to be sleeved over the conductors 12 at the ends of the two cables. The plurality of screw-off bolts are correspondingly and threadedly connected with the plurality of internal thread through holes respectively. The screw-off type bolt can be rotated to a certain degree to automatically break the screw cap and part of the stud. The conductors 12 of the two cables are respectively sleeved into the pipe body from the two ends of the pipe body, and when the screwing-off type bolt is rotated until the screwing-off type bolt is tightly pressed against the conductors 12 to a certain extent, the screwing-off type bolt is provided with a specific thin section, and the thin section is disconnected when exceeding a specific torsion. The section of the bolt and the internal thread through hole form a blind hole together. The blind holes are filled with a metal repairing agent 2. After the repairing agent is cured, polishing the surface of the metal repairing agent 2 to enable the outer surface of the repairing agent to be smooth and flush with the outer surface of the pipe body.
The silicone rubber body 10 is sleeved outside the joint connecting pipe 1 and the two cable end insulating layers 13, and two ends of the silicone rubber body are respectively overlapped on the outer shielding layers 14 of the two cable ends.
The semiconductive layer 4 is coated on the outside of the silicone rubber body 10 and the two cable end aluminum wire shielding layers 15. Specifically, the semiconductive layer 4 is formed by wrapping a semiconductive tape around the outside of the silicone rubber body 10 and the two cable end aluminum wire shielding layers 15.
The joint aluminum wire shielding layer 5 is formed by wrapping a plurality of aluminum wires on the outer side of the semiconductive layer 4 from two cable end aluminum wire shielding layers 15 respectively, and the ends of the plurality of aluminum wires are converged on one side of the semiconductive layer 4 and sleeved into the aluminum wire connecting pipe 3. The aluminum wire connecting pipe 3 is crimped to connect and fix the ends of a plurality of aluminum wires. Connect the aluminium silk through aluminium silk connecting pipe 3, compare in the past with aluminium silk tip one-to-one insert on the copper sheathing, construction is more convenient, and product performance is better.
The copper mesh layer 6 is coated on the outer side of the joint aluminum wire shielding layer 5, and two ends of the copper mesh layer are lapped on the aluminum wire shielding layers 15 at the end parts of the two cables. The copper mesh layer 6 is provided with 2-4 layers of copper meshes, and the 2-4 layers of copper meshes are sequentially laminated and coated on the outer sides of the joint aluminum wire shielding layer 5 and the cable end aluminum wire shielding layer 15 from inside to outside. In this embodiment, the copper mesh layer 6 is formed by reciprocally coating the copper mesh on the outer sides of the joint aluminum wire shielding layer 5 and the cable end aluminum wire shielding layer 15. Through setting up copper mesh layer 6 for the connection between the aluminium silk is more firm, reduces the resistance of aluminium silk shielding layer.
The inner waterproof adhesive cement layer is lapped on the outer sides of the copper mesh layer 6 and the outer protective layer 9 of the cable end, 4-6 layers of waterproof adhesive cement are arranged, the 4-6 layers of waterproof adhesive cement are lapped on the outer sides of the copper mesh layer 6 and the outer protective layer 9 of the cable end from inside to outside in sequence, and specifically, the inner waterproof adhesive cement is lapped and wrapped on the outer sides of the copper mesh layer 6 and the outer protective layer 9 of the cable end from inside to outside in sequence by the 4 layers of waterproof adhesive cement.
The waterproof insulating layer 7 is coated on the outer sides of the copper mesh layer 6 and the inner waterproof cement layer, and two ends of the waterproof insulating layer 7 are lapped on the outer jackets 16 of the two cable ends. The waterproof insulating layer 7 is formed by wrapping the outer sides of the copper mesh layer 6 and the inner waterproof cement layer by the waterproof insulating tape in a reciprocating manner for two to three times. In the present embodiment, the waterproof insulating layer 7 is formed by wrapping the waterproof insulating tape around the outer sides of the copper mesh layer 6 and the inner waterproof cement layer twice reciprocally.
The outer waterproof adhesive layer is provided with 4-6 layers of waterproof adhesive cement, and the 4-6 layers of waterproof adhesive cement are sequentially overlapped on the outer sides of the waterproof insulating layer 7, the inner waterproof adhesive cement layer 8 and the outer side of the outer protective layer 9 at the end part of the cable. Specifically, the outer waterproof cement is sequentially laminated and wrapped on the outer sides of the waterproof insulating layer 7 and the outer protective layer 9 of the cable end part from inside to outside by 4 layers of waterproof cement.
The protective layer 9 is a protective layer 9 formed by wrapping the waterproof insulating layer 7 and the outer sides of the two inner waterproof daub layers 8 by PVC belts in a reciprocating manner for two times.
The installation flow of the waterproof joint for the aluminum wire shielding aluminum core cable of the embodiment is as follows: the conductors 12 of the two cables to be connected are inserted into the two ends of the pipe body, and the twisting-off type bolt is rotated, so that the twisting-off type bolt abuts against the conductors 12 to a certain degree and the thin section of the bolt is broken. And filling the metal repairing agent 2 into a blind hole formed by the end face of the screwing-off type bolt and the internal thread through hole. After the metal repairing agent 2 is solidified, polishing is carried out on the metal repairing agent to prevent burrs of the metal repairing agent from causing scratch damage to subsequent parts. The silicone rubber body 10 is then sleeved on the outside of the tube body, and the two ends of the silicone rubber body 10 are lapped on the outer shielding layers 14 of the two cables. Next, the semiconductive tape was wrapped around the outside of the silicone rubber body 10, and both ends were overlapped on the aluminum wire shielding layers of the two cables. And wrapping the aluminum wires outside the semiconductive layer 4 from the aluminum wire shielding layers of the two cables to the middle part respectively, converging the end parts of the aluminum wires on one side of the semiconductive layer 4, sleeving the end parts of the aluminum wires into the two ends of the aluminum wire connecting pipe 3 respectively, and crimping to form the joint aluminum wire shielding layer 5. And then the copper mesh is wrapped outside the joint aluminum wire shielding layer 5 in a reciprocating manner, and two ends of the copper mesh are lapped on the aluminum wire shielding layers of the two cables. And 4 layers of waterproof cement are wrapped at two ends of the copper net to form an inner waterproof cement layer 8. The end of the inner waterproof cement layer 8 far away from the copper net is lapped on the outer protective sleeve of the end of the cable. And the waterproof insulating tape is wound outside the copper net in a reciprocating manner for two times, and two ends of the waterproof insulating tape are lapped on the outer protective sleeves of the two cable ends, so that the waterproof insulating layer 7 is formed. The two ends of the waterproof insulating layer 7 are wrapped with 4 layers of waterproof cement to form an outer waterproof cement layer 11. The end of the outer waterproof glue layer 11 far away from the waterproof insulating tape is lapped on the outer protective sleeve of the cable end. Finally, the PVC belt is wound and wrapped outside the waterproof insulating layer 7 in a reciprocating manner for two times, and two ends of the PVC belt are lapped on the outer jackets 16 of the two cables to form the protective layer 9.
In summary, the present utility model is a specific application example, and the protection scope of the present utility model is not limited, and the technical scheme of adopting equivalent substitution falls within the protection scope of the present utility model.
Claims (10)
1. The utility model provides a waterproof joint for aluminum wire shielding aluminum core cable, its characterized in that, including interior joint connecting pipe, silicone rubber main part, the semiconductive layer that cup joints in proper order outwards, connect aluminum wire shielding layer and waterproof insulating layer, connect the both ends outside of aluminum wire shielding layer to overlap joint respectively has interior waterproof daub layer, interior waterproof daub layer is kept away from the other end that connects aluminum wire shielding layer is used for the overlap joint on the oversheath of cable tip, the outside of waterproof insulating layer overlap joint respectively has outer waterproof daub layer, outer waterproof daub layer is kept away from the other end of waterproof insulating layer is used for the overlap joint on the oversheath of cable tip.
2. The waterproof joint for aluminum wire shielded aluminum core cables according to claim 1, further comprising a protective layer, wherein the protective layer is coated on the outer sides of the waterproof insulating layer and the two inner waterproof cement layers.
3. The waterproof joint for aluminum wire shielded aluminum core cables according to claim 2, wherein the protective layer is a protective layer formed by wrapping PVC tapes around the outer sides of the waterproof insulating layer and the two inner waterproof mastic layers twice in a reciprocating manner.
4. The waterproof joint for an aluminum wire-shielded aluminum core cable according to claim 1, wherein the joint aluminum wire shielding layer is a shielding layer formed by wrapping a plurality of aluminum wires around the outer side of the semiconductive layer from both ends of the semiconductive layer, respectively, and further comprises an aluminum wire connecting pipe crimped to the ends of the plurality of aluminum wires.
5. The waterproof joint for aluminum wire shielded aluminum core cables according to claim 1 or 4, further comprising a copper mesh layer, wherein the copper mesh layer is coated on the outer side of the joint aluminum wire shielding layer, and the inner waterproof cement layer is lapped on the copper mesh layer.
6. The waterproof joint for aluminum wire shielded aluminum core cables according to claim 5, wherein the copper mesh layer comprises 2-4 layers of copper mesh.
7. The waterproof joint for an aluminum wire shielded aluminum core cable according to claim 1, wherein the joint connection pipe comprises a pipe body, an internal thread through hole formed on a pipe wall of the pipe body, and a screw-off bolt screw-connected with the internal thread through hole.
8. The waterproof joint for aluminum wire shielded aluminum core cables according to claim 7, wherein one end of the screw-off bolt far away from the center of the pipe body and the internal thread through hole form a blind hole together, and the waterproof joint for aluminum wire shielded aluminum core cables further comprises a metal repairing agent filled in the blind hole.
9. The waterproof joint for an aluminum wire shielded aluminum core cable according to claim 1, wherein the inner waterproof cement layer has 4 to 6 layers of waterproof cement.
10. The waterproof joint for an aluminum wire shielded aluminum core cable according to claim 1, wherein the outer waterproof mastic layer has 4 to 6 layers of waterproof mastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223287099.7U CN219626899U (en) | 2022-12-08 | 2022-12-08 | Waterproof joint for aluminum wire shielding aluminum core cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223287099.7U CN219626899U (en) | 2022-12-08 | 2022-12-08 | Waterproof joint for aluminum wire shielding aluminum core cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219626899U true CN219626899U (en) | 2023-09-01 |
Family
ID=87774302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223287099.7U Active CN219626899U (en) | 2022-12-08 | 2022-12-08 | Waterproof joint for aluminum wire shielding aluminum core cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219626899U (en) |
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2022
- 2022-12-08 CN CN202223287099.7U patent/CN219626899U/en active Active
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