CN217362547U - Sea and land cable crossover sub subassembly - Google Patents
Sea and land cable crossover sub subassembly Download PDFInfo
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- CN217362547U CN217362547U CN202221342834.7U CN202221342834U CN217362547U CN 217362547 U CN217362547 U CN 217362547U CN 202221342834 U CN202221342834 U CN 202221342834U CN 217362547 U CN217362547 U CN 217362547U
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- 238000007789 sealing Methods 0.000 claims abstract description 76
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
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- 238000000034 method Methods 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 3
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- 239000011425 bamboo Substances 0.000 claims 3
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- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 239000002131 composite material Substances 0.000 description 1
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- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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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 application discloses a sea-land cable adapter assembly, wherein a wire core connecting end comprises a stress cone and a lead sealing sheath; the end parts of the land cable core and the sea cable core are electrically connected through a stress cone, and the lead sealing sheath is sleeved at the joint of the land cable core and the sea cable core and is in pressing contact with the stress cone, the end part of the land cable core and the end part of the sea cable core; the wire core connecting end between the land cable wire core and the sea cable wire core is arranged in the sealed cylinder body; the inside of the sealing cylinder body is sealed. The utility model discloses a sea and land cable crossover sub subassembly can save operating time to can guarantee long-term stable running state.
Description
Technical Field
The utility model relates to a sea and land cable crossover sub subassembly belongs to the transmission of electricity equipment field.
Background
Submarine cables have become an indispensable motivator to meet the demand for faster and better communication and increasingly tense power supply in coastal cities. During the landing process of the submarine cable, a complete power system is formed by connecting the submarine cable with the land cable. The connection between the sea cable and the land cable needs to be performed through a sea-land cable crossover joint. Current sea and land cable crossover sub when adopting the mode protection stress cone of prefabricated copper shell with the encapsulating, because of the copper shell can not tightly paste on the stress cone, in order to prevent that the copper shell from receiving pressure deformation, need carry out the encapsulating and fill the processing in the copper shell, need glue just can carry out follow-up operation after solidifying, the comparison time-wasting. And the form of encapsulating and filling is along with the cable operation in-process temperature constantly changes, and inside expands with heat and contracts with cold of wrapping the tape and can appear that the pitch component of waterproof glue can permeate cable stress cone inside, causes certain risk to the long-term safe and stable operation of cable.
SUMMERY OF THE UTILITY MODEL
The utility model provides a sea and land cable crossover sub subassembly can save operating time to can guarantee long-term stable running state.
The technical scheme adopted by the utility model is that the sea-land cable adapter assembly comprises a sealing cylinder body, a sea cable end, a land cable end and a plurality of cable core connecting ends, wherein the sealing cylinder body is a hollow cylinder, the end part of the sea cable end is provided with a plurality of sea cable cores protruding out of the sea cable end, and the end part of the land cable end is provided with a plurality of land cable cores protruding out of the land cable end; the submarine cable wire core and the terrestrial cable wire core are electrically connected and fixed through the wire core connecting end; the wire core connecting end comprises a stress cone and a lead sealing sheath; the end parts of the land cable core and the sea cable core are electrically connected through a stress cone, and the lead sealing sheath is sleeved at the joint of the land cable core and the sea cable core and is in pressing contact with the stress cone, the end part of the land cable core and the end part of the sea cable core; the wire core connecting end between the land cable wire core and the sea cable wire core is arranged in the sealed cylinder body; the inside of the sealing cylinder body is sealed.
Preferably, in the above sea-land cable adapter assembly, sleeve flanges are respectively arranged at two ends of the sealing cylinder, a land cable flange and a sea cable flange are respectively arranged at openings at two ends of the sealing cylinder, and the land cable flange and the sea cable flange are respectively fixedly connected with the sleeve flanges at two ends of the sealing cylinder; the land cable flange plate and the submarine cable flange plate respectively seal two ends of the sealing cylinder body, the end head of the land cable penetrates through the land cable flange plate and is fixedly sealed with the land cable flange plate, and the end head of the submarine cable penetrates through the submarine cable flange plate and is fixedly sealed with the submarine cable flange plate.
Preferably, the sea-land cable adapter assembly is provided with a plurality of glue pouring holes in the sealing cylinder body, and the sealing cylinder body is filled with sealing glue.
Preferably, in the above sea-land cable adapter assembly, a land cable clamp assembly is arranged between the land cable end and the land cable flange; the land cable clamp assembly comprises an internal threaded barrel, a clamp seat and a seal; the inner threaded cylinder is arranged in the middle of the land cable flange plate, the end of the land cable penetrates through the inner threaded cylinder, and the sealing element is arranged between the outer wall of the end of the land cable and the inner wall of the inner threaded cylinder; the clamp seat is sleeved on the end head of the land cable and the internal thread cylinder and is in threaded connection with the internal thread cylinder, and the clamp seat extrudes the sealing element and pushes the sealing element to be in pressing contact with the end head of the land cable and the internal thread cylinder.
Preferably, in the above sea-land cable adapter assembly, the land cable end is sleeved with a land cable clamp, the land cable clamp is a cylinder formed by butting two half cylinders, the half cylinders of the land cable clamp are provided with connecting lugs, and the two half cylinders of the land cable clamp are fixedly connected through the connecting lugs and are tightly pressed and fixed with the surface of the land cable end; one end of the land cable clamp is fixedly connected with the clamp seat.
Preferably, a sea cable fixing part is arranged between the sea cable end and the sea cable flange of the sea and land cable adapter assembly; the submarine cable fixing piece comprises a submarine cable clamp and a clamp seat II; the submarine cable clamp is a cylinder formed by butting two half cylinders, the half cylinders of the submarine cable clamp are provided with connecting lugs, and the two half cylinders of the submarine cable clamp are fixedly connected through the connecting lugs and are tightly pressed and fixed with the surface of the end head of the submarine cable; the second clamp seat is fixedly arranged in the middle of the submarine cable flange plate, and one end of the submarine cable clamp is fixedly connected with the second clamp seat.
Preferably, in the above sea-land cable adapter assembly, the end of the sea cable comprises a steel wire armor wound in the sea cable; the middle part of the submarine cable flange plate is provided with a second internal thread cylinder, the end of the submarine cable penetrates through the second internal thread cylinder, and a steel wire armor fixing piece for fixing steel wire armor is arranged between the end of the submarine cable and the second internal thread cylinder; the steel wire armored fixing piece comprises a gland, an outer sleeve and an inner sleeve; the internal threaded cylinder II is fixedly arranged in the middle of the submarine cable flange plate, the outer sleeve is annular and is sleeved in the internal threaded cylinder II, and the outer sleeve is fixedly connected with the internal threaded cylinder II through bolts; the end of the submarine cable penetrates through the outer sleeve, the inner sleeve is sleeved on the end of the submarine cable and inserted into the outer sleeve, and the inner sleeve and the outer sleeve slide relatively; the end part of the steel wire armor is arranged between the inner sleeve and the outer sleeve and is fixed with the outer sleeve through the inner sleeve in an extruding way; the gland is arranged in the sealing cylinder body and fixedly connected with the end part of the outer sleeve through a bolt, and the gland is contacted with the end part of the inner sleeve and pushes the inner sleeve to extrude the steel wire armor.
Preferably, in the sea-land cable adapter assembly, the end of the outer sleeve is fixedly provided with a threaded ring, and the clamp seat II is in threaded connection with the threaded ring.
Preferably, in the above sea-land cable adapter assembly, the outer surface of the inner sleeve is conical, the conical bottom end face faces the inside of the sealing cylinder, the pressing cover contacts with the conical bottom end face of the inner sleeve, and the inner surface of the outer sleeve is matched with the outer surface of the inner sleeve in shape.
Preferably, in the above sea and land cable adapter assembly, the lead sealing sheath is sequentially wrapped with the shielding layer, the insulating layer and the heat shrink tube.
The application has the advantages that:
in the technical scheme of this application, adopt the lead sealing sheath to carry out the parcel and the protection of stress cone. Lead can be tightly pasted on the stress cone by the lead sealing treatment on site, glue pouring treatment is not needed to be carried out on the connection of the wire cores, and a large amount of operation time can be saved aiming at the connection operation of a plurality of wire cores. And lead sealing sheath that the lead sealing was handled hugs closely the stress cone surface, need not to pour into waterproof glue in the operation process that the sinle silk is connected, even the cable operation in-process temperature constantly changes, does not have the pitch composition infiltration of waterproof glue to the inside condition of cable stress cone yet, can guarantee the long-term safe and stable operation of cable.
Drawings
FIG. 1 is a schematic structural diagram of the present application;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is an enlarged view of FIG. 1 at B;
fig. 4 is an enlarged view of fig. 1 at C.
Detailed Description
The technical features of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.
As shown in the figures, the utility model relates to a sea-land cable adapter assembly, which comprises a sealing cylinder 3, a sea cable end 1, a land cable end 2 and a plurality of cable core connecting ends, wherein the sealing cylinder 3 is a hollow cylinder, the end part of the sea cable end 1 is provided with a plurality of sea cable core 1-1 protruding out of the sea cable end 1, and the end part of the land cable end 2 is provided with a plurality of land cable core 2-1 protruding out of the land cable end 2; the submarine cable core 1-1 and the terrestrial cable core 2-1 are electrically connected and fixed through a core connecting end; the wire core connecting end comprises a stress cone 5 and a lead sealing sheath 6; the end parts of the land cable core 2-1 and the sea cable core 1-1 are electrically connected through a stress cone 5, and the lead sealing sheath 6 is sleeved at the joint of the land cable core 2-1 and the sea cable core 1-1 and is in pressing contact with the stress cone 5, the end part of the land cable core 2-1 and the end part of the sea cable core 1-1; the wire core connecting end between the land cable wire core 2-1 and the sea cable wire core 1-1 is arranged in the sealing cylinder 3; the sealing cylinder 3 is internally sealed.
In the technical scheme of this application, adopt lead seal sheath 6 to carry out the parcel and the protection of stress cone 5. Lead can be tightly pasted on the stress cone by the lead sealing treatment on site, glue pouring treatment is not needed to be carried out on the connection of the wire cores, and a large amount of operation time can be saved aiming at the connection operation of a plurality of wire cores. And lead sealing sheath 6 that the lead sealing was handled hugs closely the stress cone surface, need not to pour into waterproof glue in the operation process of sinle silk connection, even the cable operation in-process temperature constantly changes, does not have the pitch composition infiltration of waterproof glue to the inside condition of cable stress cone yet, can guarantee the long-term safe and stable operation of cable.
In this embodiment, two ends of the sealing cylinder 3 are respectively sealed by the submarine cable flange plate 4-2 and the land cable flange plate 4-1, and are glue-filled and waterproof after sealing, so that the drying inside the lead sealing sheath 6 can be effectively ensured, the water entering inside the lead sealing sheath 6 is prevented, and the long-term safe and stable operation of the cable is ensured.
A land cable clamp assembly is arranged between the land cable end 2 and the land cable flange 4-1; the land cable clamp assembly comprises an internal threaded barrel 8, a clamp seat 9 and a seal 10; the inner threaded cylinder 8 is arranged in the middle of the land cable flange plate 4-1, the land cable end 2 penetrates through the inner threaded cylinder 8, and the sealing element 10 is arranged between the outer wall of the land cable end 2 and the inner wall of the inner threaded cylinder 8; the clamp seat 9 is sleeved on the land cable end head 2 and the internal thread cylinder 8 and is in threaded connection with the internal thread cylinder 8, and the clamp seat 9 extrudes the sealing element 10 and pushes the sealing element 10 to be in pressing contact with the land cable end head 2 and the internal thread cylinder 8.
In this embodiment, the seal 10 is pushed and pressed by the clamp base 9. The sealing element 10 can cling to the outer surface of the land cable end 2 and the inner surface of the internal thread cylinder 8, so that the land cable end 2 and the internal thread cylinder 8 are sealed, connection between the land cable end 2 and the land cable flange plate 4-1 is guaranteed to be sealed, the structure is simple, and a good long-term sealing effect is achieved.
The land cable end 2 is sleeved with a land cable clamp 11, the land cable clamp 11 is a cylinder formed by butting two half cylinders, the half cylinders of the land cable clamp 11 are provided with connecting lugs, and the two half cylinders of the land cable clamp 11 are fixedly connected through the connecting lugs and are tightly pressed and fixed with the surface of the land cable end 2; one end of the land cable clamp 11 is fixedly connected with the clamp seat 9.
The land cable end 2 is provided with the land cable clamp 11, the land cable end 2 is fixed in an auxiliary mode through connection of the land cable clamp 11 and the clamp seat 9, when the land cable end 2 is pulled, connection between the land cable core 2-1 and the sea cable core 1-1 can be prevented from being influenced by external force, and therefore reliability of sea-land cable connection is guaranteed.
A submarine cable fixing piece is arranged between the submarine cable end 1 and the submarine cable flange plate 4-2; the submarine cable fixing piece comprises a submarine cable clamp 17 and a clamp seat II 13; the submarine cable clamp 17 is a cylinder formed by butting two half cylinders, the half cylinders of the submarine cable clamp 17 are provided with connecting lugs, and the two half cylinders of the submarine cable clamp 17 are fixedly connected through the connecting lugs and are tightly pressed and fixed with the surface of the submarine cable end 1; the second clamp seat 13 is fixedly arranged in the middle of the submarine cable flange plate 4-2, and one end of the submarine cable clamp 17 is fixedly connected with the second clamp seat 13. The end part of the outer sleeve 15 is fixedly provided with a threaded ring 18, and the second clamp seat 13 is in threaded connection with the threaded ring 18.
In this embodiment, the submarine cable end 1 is fixedly connected with the submarine cable flange plate 4-2 through the submarine cable fixing piece, so that when the submarine cable end 1 is under tension, the submarine cable core 1-1 and the terrestrial cable core 2-1 can be prevented from being influenced by external force, and the reliability of submarine and terrestrial cable connection is ensured.
The submarine cable end 1 comprises steel wire armors 1-2 wound in a submarine cable; the middle part of the submarine cable flange plate 4-2 is provided with a second internal threaded cylinder 12, the end 1 of the submarine cable penetrates through the second internal threaded cylinder 12, and a steel wire armor fixing piece for fixing the steel wire armor 1-2 is arranged between the end 1 of the submarine cable and the second internal threaded cylinder 12; the steel wire armored fixing piece comprises a gland 14, an outer sleeve 15 and an inner sleeve 16; the second internal threaded cylinder 12 is fixedly arranged in the middle of the submarine cable flange plate 4-2, the outer sleeve 15 is annular and is sleeved in the second internal threaded cylinder 12, and the outer sleeve 15 is fixedly connected with the second internal threaded cylinder 12 through bolts; the submarine cable end 1 penetrates through the outer sleeve 15, the inner sleeve 16 is sleeved on the submarine cable end 1 and inserted into the outer sleeve 15, and the inner sleeve 16 and the outer sleeve 15 slide relatively; the end part of the steel wire armor 1-2 is arranged between the inner sleeve 16 and the outer sleeve 15 and is fixed with the outer sleeve 15 through the inner sleeve 16 in an extruding way; the gland 14 is arranged in the sealing cylinder 3, the gland 14 is fixedly connected with the end part of the outer sleeve 15 through a bolt, and the gland 14 is contacted with the end part of the inner sleeve 16 and pushes the inner sleeve 16 to extrude the steel wire armor 1-2.
In this embodiment, the inner sleeve 16 is pressed by the pressing cover 14, so that the inner sleeve 16 and the outer sleeve 15 press the steel wire armoring 1-2, and the steel wire armoring 1-2 is fixed, and further the submarine cable end 1 and the sealing cylinder 3 are fixed, thereby preventing the connection between the terrestrial cable core 2-1 and the submarine cable core 1-1 from being damaged due to the relative displacement of the submarine cable end 1 and the sealing cylinder 3.
The outer surface of the inner sleeve 16 is conical, the conical bottom end face faces the inside of the sealing cylinder 3, the press cover 14 is in contact with the conical bottom end face of the inner sleeve 16, and the inner surface of the outer sleeve 15 is matched with the outer surface of the inner sleeve 16 in shape.
In this embodiment, the surface of the steel wire armor 1-2 extruded by the inner sleeve 16 is set to be conical, which is beneficial to applying extrusion pressure on the steel wire armor 1-2 by the inner sleeve 16 and the outer sleeve 15 and ensuring the fixing effect of the steel wire armor 1-2.
The lead sealing sheath 6 is sequentially wrapped with a shielding layer, an insulating layer and a heat-shrinkable tube. The lead sealing sheath 6 is protected, so that the insulation and sealing performance of the joint between the land cable core 2-1 and the sea cable core 1-1 are ensured, and the long-term safe and stable operation of the cable is ensured.
The environment and the application effect of the sea-land cable adapter assembly suitable for application are described in the following by the actual environment of the south China Huarun 1# offshore wind farm.
The site of the No. 1 Huarun offshore wind farm is located in the eastern sea area of the No. Huarun Xian county of Zhejiang province, the offshore distance of the center point of the site is about 26km, and the water depth is about 19-26 m. The field area is approximately parallelogram, the longest east-west is about 14km, the widest south-north is about 5km, the planned area is about 63.7km2, and the planned installed capacity is 400 MW. A220 kV offshore booster station is newly built in the project, a 2-turn 3X 500mm2 220kV alternating current submarine cable is used for sending out and landing, and a land transferring cable is connected to a land centralized control center. In this project, sea-land cable transition joints are used for electrical and mechanical connection of sea cables and land cables at the landing site side. The submarine cable is a three-core crosslinked polyethylene insulated split-phase lead sheath metal armored submarine photoelectric composite cable 3 × 500127/220kV SM 2 × 48C; the land cable is 220kV land cable ZA-YJQ 03-Z1X 630127/220 kV.
In the meteorological conditions of the using environment of the sea-land cable crossover sub assembly, the average temperature of many years is 17.8 ℃, the highest temperature is 33.7 ℃, the lowest temperature is-3.6 ℃, the average air pressure is 1005.9 hectopascal, and the average precipitation is 1280.4 millimeters. In the engineering, the sea-land cable conversion connection position is in a sea-land cable conversion well, and due to the fact that the sea-land cable conversion connection position is close to the sea and under the influence of subtropical monsoon climate, the air humidity is high, the air corrosion is strong, and the protection requirement on the sea-land cable conversion joint is high.
In this engineering, use the technical scheme of the sea and land cable crossover sub subassembly of this application to carry out the conversion connection of sea and land cable, in the work progress, effectual construction speed that has improved to after a period of time's application, the operation is steady, and the fault rate is zero, predicts the operation that can guarantee safety and stability in 30 years' life cycle.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should also understand that the changes, modifications, additions or substitutions made within the scope of the present invention should belong to the protection scope of the present invention.
Claims (10)
1. A sea-land cable adapter assembly comprises a sealing cylinder body (3), a sea cable end (1), a land cable end (2) and a plurality of cable core connecting ends, wherein the sealing cylinder body (3) is a hollow cylinder, the end part of the sea cable end (1) is provided with a plurality of sea cable core (1-1) protruding out of the sea cable end (1), and the end part of the land cable end (2) is provided with a plurality of land cable core (2-1) protruding out of the land cable end (2); the submarine cable core (1-1) and the terrestrial cable core (2-1) are electrically connected and fixed through a core connecting end; the method is characterized in that: the wire core connecting end comprises a stress cone (5) and a lead sealing sheath (6); the end parts of the land cable core (2-1) and the sea cable core (1-1) are electrically connected through a stress cone (5), and the lead sealing sheath (6) is sleeved at the joint of the land cable core (2-1) and the sea cable core (1-1) and is in pressing contact with the stress cone (5), the end part of the land cable core (2-1) and the end part of the sea cable core (1-1); the wire core connecting end between the land cable wire core (2-1) and the sea cable wire core (1-1) is arranged in the sealing cylinder body (3); the interior of the sealing cylinder body (3) is sealed.
2. A sea-land cable transition joint assembly according to claim 1, wherein: sleeve flanges (7) are respectively arranged at two ends of the sealing cylinder body (3), a land cable flange (4-1) and a submarine cable flange (4-2) are respectively arranged at openings at two ends of the sealing cylinder body (3), and the land cable flange (4-1) and the submarine cable flange (4-2) are respectively fixedly connected with the sleeve flanges (7) at two ends of the sealing cylinder body (3); the land cable flange plate (4-1) and the submarine cable flange plate (4-2) are respectively sealed at two ends of the sealing cylinder body (3), the land cable end (2) penetrates through the land cable flange plate (4-1) and is fixedly sealed with the land cable flange plate (4-1), and the submarine cable end (1) penetrates through the submarine cable flange plate (4-2) and is fixedly sealed with the submarine cable flange plate (4-2).
3. A sea-land cable transition joint assembly according to claim 2, wherein: the sealing barrel (3) is provided with a plurality of glue pouring holes (3-6), and the sealing barrel (3) is filled with sealing glue.
4. A sea-land cable transition joint assembly according to claim 2, wherein: a land cable clamp assembly is arranged between the land cable end (2) and the land cable flange plate (4-1); the land cable clamp assembly comprises an internal threaded barrel (8), a clamp seat (9) and a sealing element (10); the inner threaded cylinder (8) is arranged in the middle of the land cable flange plate (4-1), the land cable end head (2) penetrates through the inner threaded cylinder (8), and the sealing element (10) is arranged between the outer wall of the land cable end head (2) and the inner wall of the inner threaded cylinder (8); the anchor clamps seat (9) cup joint on land cable end (2), inside screw thread section of thick bamboo (8) and with inside screw thread section of thick bamboo (8) threaded connection, anchor clamps seat (9) extrusion sealing member (10) and promote sealing member (10) and land cable end (2), inside screw thread section of thick bamboo (8) sticis the contact.
5. A sea-land cable transition joint assembly according to claim 4, wherein: the land cable end (2) is sleeved with a land cable clamp (11), the land cable clamp (11) is a cylinder formed by butting two half cylinders, connecting lugs are arranged on the half cylinders of the land cable clamp (11), and the two half cylinders of the land cable clamp (11) are fixedly connected through the connecting lugs and are tightly pressed and fixed with the surface of the land cable end (2); one end of the land cable clamp (11) is fixedly connected with the clamp seat (9).
6. A sea-land cable transition joint assembly according to claim 2, wherein: a submarine cable fixing piece is arranged between the submarine cable end (1) and the submarine cable flange plate (4-2); the submarine cable fixing piece comprises a submarine cable clamp (17) and a clamp seat II (13); the submarine cable clamp (17) is a cylinder formed by butting two half cylinders, the half cylinders of the submarine cable clamp (17) are provided with connecting lugs, and the two half cylinders of the submarine cable clamp (17) are fixedly connected through the connecting lugs and are tightly pressed and fixed with the surface of the submarine cable end (1); and the second clamp seat (13) is fixedly arranged in the middle of the submarine cable flange plate (4-2), and one end of the submarine cable clamp (17) is fixedly connected with the second clamp seat (13).
7. A sea-land cable transition joint assembly according to claim 6, wherein: the submarine cable end (1) comprises a steel wire armor (1-2) wound in a submarine cable; a second internal thread cylinder (12) is arranged in the middle of the submarine cable flange plate (4-2), a submarine cable end (1) penetrates through the second internal thread cylinder (12), and a steel wire armor fixing piece for fixing the steel wire armor (1-2) is arranged between the submarine cable end (1) and the second internal thread cylinder (12); the steel wire armored fixing piece comprises a gland (14), an outer sleeve (15) and an inner sleeve (16); the second internal threaded cylinder (12) is fixedly arranged in the middle of the submarine cable flange plate (4-2), the outer sleeve (15) is annular and is sleeved in the second internal threaded cylinder (12), and the outer sleeve (15) is fixedly connected with the second internal threaded cylinder (12) through bolts; the submarine cable end (1) penetrates through the outer sleeve (15), the inner sleeve (16) is sleeved on the submarine cable end (1) and inserted into the outer sleeve (15), and the inner sleeve (16) and the outer sleeve (15) slide relatively; the end part of the steel wire armor (1-2) is arranged between the inner sleeve (16) and the outer sleeve (15) and is fixed with the outer sleeve (15) through the inner sleeve (16) in an extruding way; the pressing cover (14) is arranged in the sealing cylinder body (3), the pressing cover (14) is fixedly connected with the end part of the outer sleeve (15) through a bolt, and the pressing cover (14) is in contact with the end part of the inner sleeve (16) and pushes the inner sleeve (16) to extrude the steel wire armor (1-2).
8. A sea-land cable transition joint assembly according to claim 7, wherein: the end part of the outer sleeve (15) is fixedly provided with a threaded ring (18), and the second clamp seat (13) is in threaded connection with the threaded ring (18).
9. A sea-land cable transition joint assembly according to claim 7, wherein: the outer surface of the inner sleeve (16) is conical, the conical bottom end face faces the inside of the sealing cylinder body (3), the pressing cover (14) is in contact with the conical bottom end face of the inner sleeve (16), and the inner surface of the outer sleeve (15) and the outer surface of the inner sleeve (16) are arranged in a shape matching mode.
10. A sea-land cable transition joint assembly according to claim 1, wherein: the lead sealing sheath (6) is sequentially wrapped with a shielding layer, an insulating layer and a heat-shrinkable tube.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221342834.7U CN217362547U (en) | 2022-05-31 | 2022-05-31 | Sea and land cable crossover sub subassembly |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221342834.7U CN217362547U (en) | 2022-05-31 | 2022-05-31 | Sea and land cable crossover sub subassembly |
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| CN217362547U true CN217362547U (en) | 2022-09-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119482189A (en) * | 2025-01-09 | 2025-02-18 | 中国电建集团西北勘测设计研究院有限公司 | Marine light Fu Jishu submarine cable laying method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119482189A (en) * | 2025-01-09 | 2025-02-18 | 中国电建集团西北勘测设计研究院有限公司 | Marine light Fu Jishu submarine cable laying method |
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