Corrosion-resistant power cable

Abstract

The invention discloses a corrosion-resistant power cable, and belongs to the technical field of power cables, the corrosion-resistant power cable comprises a cable main body, the outer side of the cable main body is provided with a wrapping tape insulating layer, the outer side of the wrapping tape insulating layer is sequentially provided with an inner sheath and an outer sheath from inside to outside, and a metal protection layer is arranged between the inner sheath and the outer sheath. The metal protection layer comprises a metal sheath, a buffer waterproof layer and a butt joint end plate, the eight outer protection fastening modules which are connected end to end are arranged and matched with the metal protection layer to form a cable corrosion-resistant protection structure which is connected with the inner sheath wrapping the cable body from the outer side and clamps and fastens the outer sheath from the outer side; each area of the cable main body is effectively covered and protected, the metal sheath is shaped and reinforced from the two ends by the sixteen butt joint end plates, and the eight outer protection fastening modules are shaped and reinforced from the end parts by the butt joint shaping rings, so that the strength and the protection performance of the corrosion-resistant protection structure are improved.

Description

Technical Field

[0001] The invention relates to the technical field of power cables, and in particular to a corrosion-resistant power cable. Background Art

[0002] A shielding layer and an insulating layer are arranged on the outside of the core of the cross-linked polyethylene power cable. A metal protective layer is arranged on the outside of the insulating layer to block water and prevent corrosion. An outer sheath is arranged on the outside of the metal protective layer to strengthen protection and mark cable information. The metal protective layer is connected and wrapped on the outside of the core insulation layer in the form of a single-layer metal composite tape. The metal protective layer is completely composited with the insulation layer and the outer sheath from the middle position, and can only protect the cable core from the inner area of ​​the power cable. During the use of the power cable, a certain area of ​​the cable outer sheath is pulled, which may cause the metal protective layer to migrate from the area, affecting the structure and strength of the metal protective layer, thereby affecting the protective performance of the metal protective layer. At the same time, if the outer sheath of the cable is damaged, the metal protective layer in the composite area may be damaged. It is impossible to mark and constrain the damaged area of ​​the cable in time, so that the damaged area of ​​the cable outer sheath and the metal protective layer will expand during continued use, making it easier for the power cable to corrode from the damaged area, further affecting the safe use of the power cable. Summary of the invention

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides a corrosion-resistant power cable, which is provided with eight outer protection fastening modules connected end to end, and cooperates with the metal protective layer to form an inner sheath connected to and wrapped around the cable body from the outside, and at the same time clamps and fastens the outer sheath from the outside to effectively cover and protect various areas of the cable body. The metal sheath is shaped and reinforced from both ends by sixteen butt end plates, and the eight outer protection fastening modules are shaped and reinforced from the ends by butt shaping rings, so as to improve the strength and protective performance of the corrosion-resistant protective structure. When the outer sheath is damaged, the fastening plate and the tightening side plate move inward from the damaged area, and the movable fastening plate clamps the outer sheath inward to mark the damaged area, and effectively prevents the damaged area of ​​the outer sheath from continuing to expand, thereby improving the protective effect of the cable body, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a corrosion-resistant power cable, comprising a cable body, a tape insulation layer is provided on the outside of the cable body, an inner sheath and an outer sheath are provided on the outside of the tape insulation layer in sequence from the inside to the outside, a metal protective layer is provided between the inner sheath and the outer sheath, the metal protective layer comprises a metal sheath, a buffer waterproof layer and a butt end plate, the number of the butt end plates is several, the several butt end plates are symmetrical in pairs so as to be respectively positioned at the two ends of the metal sheath, the buffer waterproof layer is fixed on the outer side wall of the metal sheath, the several butt end plates support the inner sheath from the two ends of the inner sheath and are connected and wrapped by the metal sheath from the outside; eight outer protection fastening modules are provided on the outside of the metal protective layer, the outer protection fastening modules comprise an arc-shaped splicing splint, a tightening side plate and a fastening plate, the arc Three tightening side panels distributed along the arc edge of the arc-shaped splicing splint are fixed at both ends of the arc-shaped splicing splint, and the top ends of the two tightening side panels in a horizontal position are fixedly connected to the fastening plate, and the tightening side panels and the fastening plates are positioned between the corresponding two butt end panels through the arc-shaped splicing splint, and the tightening side panels are tightened to clamp and fasten the outer sheath from the outside of the outer sheath through the fastening plates; two combined constraint modules corresponding to the two ends of the outer sheath are provided on the outside of the metal protective layer, and the combined constraint modules include a constraint disk and a connecting block, and the number of the connecting blocks is several, and several of the connecting blocks are positioned on the inner side of the butt end panel through the constraint disk to align several of the tightening side panels, and the bottom end of the connecting block is fixedly connected to the top end of the corresponding tightening side panel to constrain the tightening side panel and the fastening plate to the outside of the outer sheath.

[0005] Preferably, the tape-wrapped insulating layer is fixedly connected to the outer side wall of the cable body, the inner sheath is fixedly connected to the outer side wall of the tape-wrapped insulating layer, and the metal sheath is fixedly connected to the outer side wall of the inner sheath.

[0006] Preferably, several of the butt end plates are respectively fixedly connected to the two ends of the metal sheath in a ring shape, and several of the butt end plates in the same plane are connected end to end, and the ends of the buffer waterproof layer are fixedly connected to the inner side walls of the corresponding butt end plates.

[0007] Preferably, a docking shaping ring is provided on the inner side of the docking end plate, and the docking shaping ring is fixedly connected to the inner side walls of several of the docking end plates. Both ends of the arc-shaped splicing clamp are provided with grooves corresponding to the docking shaping ring, and the docking shaping ring is snap-connected inside the corresponding groove.

[0008] Preferably, both ends of the arc-shaped splicing splint are fixedly connected to the inner walls of the corresponding docking end plates, the eight arc-shaped splicing splints are distributed in a ring shape on the outside of the buffer waterproof layer, the inner walls of the arc-shaped splicing splints are tightly attached to the outer walls of the buffer waterproof layer, and the adjacent sides of the eight fastening plates are fixedly connected.

[0009] Preferably, the inner side wall of the butt end plate is provided with three grooves corresponding to the tightening side plates, and the tightening side plates are snap-connected in the corresponding grooves.

[0010] Preferably, the outer sheath is located between the arc-shaped splicing clamp plate and the fastening plate, and the inner side wall of the outer sheath is fixedly connected to the outer side wall of the arc-shaped splicing clamp plate.

[0011] Preferably, the restraint disk is located outside several butt end plates in the same plane, the restraint disk is fixedly connected to the arc edge of the butt end plates, the connection block is fixedly connected inside the restraint disk, and the connection block is tightly attached to the inner wall of the butt end plates.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The present invention provides eight end-to-end outer protection fastening modules, which cooperate with the metal protective layer to form a cable corrosion-resistant protection structure that connects to the inner sheath wrapped around the cable body from the outside, and clamps and fastens the outer sheath from the outside. The cable body is regionally planned from the outside and the corresponding ranges of the cable body and the outer sheath are protected from both inside and outside. Multiple groups of cooperation can effectively cover and protect various areas of the cable body. The metal sheath is shaped and reinforced from both ends by sixteen butt-jointed end plates, and the eight outer protection fastening modules are shaped and reinforced from the ends by butt-jointed shaping rings, thereby improving the strength and Protective performance, two combined constraint modules are connected at the two end areas of the metal protective layer, and several connecting blocks are positioned on the inner side of the docking end plate through the constraint plate, which aligns and connects the corresponding tightened side plates, and can constrain the state of the tightening side plates and the fastening plates on the outside of the outer sheath. When the outer sheath is damaged, the fastening plates and the tightening side plates move inward from the damaged area, and the movable fastening plates clamp the outer sheath inward to mark the damaged area, and effectively prevent the damaged area of ​​the outer sheath from continuing to expand, thereby improving the protective effect on the cable body, improving the corrosion resistance of the power cable, and ensuring the safe use of the power cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution in the embodiment, the drawings in the embodiment are briefly introduced below.

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 It is a side view structural schematic diagram of the present invention;

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention from the side;

[0018] Figure 4 It is a schematic cross-sectional structure diagram of the present invention;

[0019] Figure 5 It is a schematic diagram of the partially separated structure of the present invention.

[0020] In the figure: 1. Cable body; 11. Tape insulation layer; 2. Inner sheath; 3. Outer sheath; 4. Metal protective layer; 41. Metal sheath; 42. Buffer waterproof layer; 43. Docking end plate; 431. Groove; 44. Docking shaping ring; 5. External protection fastening module; 51. Arc splicing splint; 511. Slot; 52. Tightening side plate; 53. Fastening plate; 6. Combined constraint module; 61. Constraint disk; 62. Connection block. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the technical solution in the embodiment of the present invention in conjunction with the accompanying drawings in the embodiment of the present invention. Figures 1 to 5 The detailed description of the structure will be clearly presented, and the structural contents mentioned in the following embodiments are all referenced to the drawings in the specification.

[0022] See also Figure 1 to Figure 5In an embodiment of the present invention, a corrosion-resistant power cable comprises a cable body 1, a tape insulation layer 11 is arranged on the outside of the cable body 1, an inner sheath 2 and an outer sheath 3 are arranged on the outside of the tape insulation layer 11 from the inside to the outside, a metal protective layer 4 is arranged between the inner sheath 2 and the outer sheath 3, the metal protective layer 4 comprises a metal sheath 41, a buffer waterproof layer 42 and a butt end plate 43, the number of butt end plates 43 is several, the several butt end plates 43 are symmetrical in pairs to be respectively positioned at the two ends of the metal sheath 41, the buffer waterproof layer 42 is fixed to the outer wall of the metal sheath 41, the several butt end plates 43 support the inner sheath 2 from the two ends of the inner sheath 2 and are connected and wrapped by the metal sheath 41 from the outside, eight outer protection fastening modules 5 are arranged on the outside of the metal protective layer 4, the outer protection fastening modules 5 comprise an arc splicing clamp 51, a tightening side plate 52 and a fastening plate 53, the arc splicing clamp 51 is provided with a plurality of outer protection fastening modules 5 ... Three tightening side panels 52 distributed along the arc edge of the arc-shaped splicing splint 51 are fixed at both ends of the connecting splint 51. The top ends of the two tightening side panels 52 in the horizontal position are fixedly connected to the fastening plates 53. The tightening side panels 52 and the fastening plates 53 are positioned between the corresponding two docking end panels 43 through the arc-shaped splicing splint 51. The tightening side panels 52 are tightened to clamp and fasten the outer sheath 3 from the outside of the outer sheath 3 through the fastening plates 53. Two combined constraint modules 6 corresponding to the two ends of the outer sheath 3 are provided on the outside of the metal protective layer 4. The combined constraint module 6 includes a constraint disk 61 and a connecting block 62. The number of the connecting blocks 62 is several. Several connecting blocks 62 are positioned on the inner side of the docking end plate 43 through the constraint disk 61 to align several tightening side panels 52. The bottom end of the connecting block 62 is fixedly connected to the top end of the corresponding tightening side panel 52 to constrain the tightening side panel 52 and the fastening plate 53 to be in a state outside the outer sheath 3.

[0023] The tape insulation layer 11 is fixedly connected to the outer wall of the cable body 1, and the inner sheath 2 is fixedly connected to the outer wall of the tape insulation layer 11, which effectively protects the cable body 1 from the outside of the cable body 1. A metal protective layer 4 is provided on the outside of the inner sheath 2, and the metal protective layer 4 is located between the inner sheath 2 and the outer sheath 3. The metal protective layer 4 serves to connect the inner sheath 2 and the outer sheath 3. The metal protective layer 4 is composed of a metal sheath 41, a buffer waterproof layer 42 and a butt end plate 43. The number of butt end plates 43 is several, and the butt end plates 43 are symmetrical in pairs. The butt end plates 43 are respectively annularly fixedly connected to the two ends of the metal sheath 41, and the butt end plates 43 in the same plane are connected end to end, and the butt end plates 43 are positioned and connected at the two ends of the metal sheath 41. The buffer waterproof layer 42 is fixed to the outer wall of the metal sheath 41, the end of the buffer waterproof layer 42 is fixedly connected to the inner wall of the corresponding docking end plate 43, and the metal sheath 41 is fixedly connected to the outer wall of the inner sheath 2, effectively composite metal protective layer 4 as a whole on the outer wall of the inner sheath 2. Several docking end plates 43 support the inner sheath 2 from both ends of the inner sheath 2, so that the metal sheath 41 is connected and wrapped around the inner sheath 2 from the outside, so as to effectively protect the inner sheath 2 from the outside through the metal protective layer 4.

[0024] Eight external protection fastening modules 5 are located between the metal protective layer 4 and the outer sheath 3. The external protection fastening modules 5 are composed of an arc-shaped splicing splint 51, a tightening side panel 52 and a fastening plate 53. Both ends of the arc-shaped splicing splint 51 are fixedly connected to the inner wall of the corresponding docking end panel 43. Both ends of the arc-shaped splicing splint 51 are fixed with three tightening side panels 52 distributed along the arc edge of the arc-shaped splicing splint 51. The top ends of the two tightening side panels 52 in a horizontal position are fixedly connected to the fastening plate 53, which effectively connects the external protection fastening module 5 in the inner area of ​​the metal protective layer 4. Eight arc-shaped splicing clamps 51 are distributed in an annular shape on the outside of the buffer waterproof layer 42, and the inner side wall of the arc-shaped splicing clamps 51 is close to the outer side wall of the buffer waterproof layer 42. The adjacent sides of the eight fastening plates 53 are fixedly connected, so that the eight outer protection fastening modules 5 are spliced ​​in an annular shape on the outside of the buffer waterproof layer 42. The eight combined outer protection fastening modules 5 cover and wrap the buffer waterproof layer 42 and the metal sheath 41 from the outside, which can effectively protect the buffer waterproof layer 42, the metal sheath 41 and the inner sheath 2 from the outside, and improve the protection performance of the cable body 1. The outer sheath 3 is located between the arc-shaped splicing clamps 51 and the fastening plates 53. The inner side wall of the outer sheath 3 is fixedly connected to the outer side wall of the arc-shaped splicing clamps 51. The tightening side plates 52 are tightened to allow the fastening plates 53 to be clamped on the outer side wall of the outer sheath 3 from above, achieving the effect of clamping and fastening the outer sheath 3 from the outside of the outer sheath 3, thereby effectively fastening and protecting the outer sheath 3 from the outside.

[0025] A docking shaping ring 44 is provided on the inner side of the docking end plate 43, and the docking shaping ring 44 is fixedly connected to the inner side walls of several docking end plates 43. Both ends of the arc-shaped splicing clamp plate 51 are provided with a slot 511 corresponding to the docking shaping ring 44, and the docking shaping ring 44 is snap-connected inside the corresponding slot 511. The docking shaping ring 44 connects the eight arc-shaped splicing clamp plates 51 from the ends of the arc-shaped splicing clamp plates 51, so that the docking end plate 43 is stably connected to the ends of the corresponding arc-shaped splicing clamp plates 51, which can play the role of reinforcing and shaping the eight external protection fastening modules 5, so that the eight external protection fastening modules 5 are kept in a specified state on the inner side of the metal protective layer 4. The inner wall of the butt end plate 43 is provided with three grooves 431 corresponding to the tightening side plates 52. The tightening side plates 52 are snap-fitted and connected inside the corresponding grooves 431, and the tightening side plates 52 are positioned in the designated area on the inner wall of the butt end plate 43, further improving the shaping effect of the eight outer protection fastening modules 5, while limiting the movement path of the tightening side plates 52, ensuring that the tightening side plates 52 maintain vertical movement. The eight end-to-end outer protection fastening modules 5 form a cylindrical structure and are connected to the outside of the metal protective layer 4. The eight outer protection fastening modules 5 and the metal protective layer 4 form a cable corrosion-resistant protective structure that is connected to the inner sheath 2 wrapped around the cable body 1 from the outside, and clamps and tightens the outer sheath 3 from the outside. The corrosion-resistant protective structure can perform regional planning on the cable body 1 from the outside, and protect the corresponding range of the cable body 1 and the outer sheath 3 from both the inside and the outside. Multiple groups of cooperation can effectively cover and protect various areas of the cable body 1. The metal sheath 41 is shaped and reinforced from both ends by sixteen butt end plates 43, and eight arc-shaped splicing clamps 51 are spliced ​​together in a ring shape, and are shaped and reinforced from the ends by butt shaping rings 44, so that the metal protective layer 4 and the outer protective fastening module 5 can be maintained on the outside of the cable body 1, avoiding deformation and migration of the metal protective layer 4 and the outer protective fastening module 5 due to the pulling of the outer sheath 3, thereby improving the strength and protective performance of the corrosion-resistant protective structure.

[0026] The combined constraint module 6 located outside the metal protective layer 4 corresponds to the two end areas of the outer sheath 3. The combined constraint module 6 is composed of a constraint disk 61 and a connection block 62. The constraint disk 61 is located outside a plurality of butt end plates 43 in the same plane. The constraint disk 61 is fixedly connected to the arc edge of the butt end plate 43. The connection block 62 is fixedly connected inside the constraint disk 61. The connection block 62 is close to the inner side wall of the butt end plate 43. There are several connection blocks 62. Several connection blocks 62 are positioned inside the butt end plate 43 and aligned with several tight side plates 52 from the outside. The bottom end of the connecting block 62 is fixedly connected to the top end of the corresponding tightening side panel 52, stably connecting the tightening side panel 52 and the connecting block 62. The connecting block 62 pulls the tightening side panel 52 to keep the tightening side panel 52 in a tightened state, so as to constrain the tightening side panel 52 and the fastening plate 53 on the outside of the outer sheath 3, so that the fastening plate 53 can be stably and tightly fixed on the outer wall of the outer sheath 3, so that the combined constraint module 6 can effectively constrain and protect the outer sheath 3. Two combined constraint modules 6 are connected to the two end areas of the metal protective layer 4, and a number of connection blocks 62 are aligned and connected to the corresponding tightened tightening side plates 52, constraining the tightening side plates 52 and the fastening plates 53 to be in a state outside the outer sheath 3. When the outer sheath 3 is damaged, the fastening plates 53 and the tightening side plates 52 move inward from the damaged area, and the movable fastening plates 53 clamp the outer sheath 3 inward to mark the damaged area, and effectively prevent the damaged area of ​​the outer sheath 3 from continuing to expand, thereby improving the protection effect of the cable body 1, improving the corrosion resistance of the power cable, and ensuring the safe use of the power cable.

[0027] The working principle of the present invention is as follows: eight end-to-end connected outer protection fastening modules 5 are connected to the outer side of the metal protective layer 4, and connected to the inner sheath 2 wrapped around the cable body 1 from the outside; the arc-shaped splicing clamps 51 and the fastening plates 53 clamp and fasten the outer sheath 3 from the outside; the metal sheath 41 is shaped and reinforced from both ends by sixteen docking end plates 43; the eight arc-shaped splicing clamps 51 are spliced ​​together in a ring shape, and are shaped and reinforced from the end by docking shaping rings 44, so that the metal protective layer 4 and the outer protection fastening module 5 can be maintained on the outer side of the cable body 1; two combined constraint modules 6 are connected to the two end areas of the metal protective layer 4; a number of connecting blocks 62 are aligned and connected to tighten the corresponding tightening side plates 52, so that the fastening plates 53 are maintained in the state of clamping the outer sheath 3; when the outer sheath 3 is damaged, the fastening plates 53 and the tightening side plates 52 move inward from the damaged area, the damaged area is marked by the fastening plates 53, and the damaged area of ​​the outer sheath 3 is prevented from continuing to expand, thereby ensuring the safe use of the power cable.

[0028] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A corrosion-resistant power cable, comprising a cable body (1), wherein a tape-wrapped insulating layer (11) is disposed on the outside of the cable body (1), and an inner sheath (2) and an outer sheath (3) are disposed on the outside of the tape-wrapped insulating layer (11) in sequence from the inside to the outside, wherein: A metal protective layer (4) is provided between the inner sheath (2) and the outer sheath (3), the metal protective layer (4) comprising a metal sheath (41), a buffer waterproof layer (42) and a butt end plate (43), the butt end plates (43) being of a plurality, the butt end plates (43) being symmetrical in pairs and respectively positioned at two ends of the metal sheath (41), the buffer waterproof layer (42) being fixed to the outer side wall of the metal sheath (41), the butt end plates (43) supporting the inner sheath (2) from two ends of the inner sheath (2) and being connected and wrapped by the metal sheath (41) from the outside of the inner sheath (2); Eight outer protection fastening modules (5) are arranged on the outside of the metal protective layer (4), and the outer protection fastening modules (5) include an arc-shaped splicing clamp (51), a tightening side plate (52) and a tightening plate (53). Three tightening side plates (52) distributed along the arc edge of the arc-shaped splicing clamp (51) are fixed at both ends of the arc-shaped splicing clamp (51), and the top ends of the two tightening side plates (52) in a horizontal position are fixedly connected to the tightening plate (53). The tightening side plates (52) and the tightening plates (53) are positioned between the corresponding two butt end plates (43) through the arc-shaped splicing clamp (51). The tightening side plates (52) are tightened to clamp and tighten the outer sheath (3) from the outside of the outer sheath (3) through the tightening plates (53); Two combined constraint modules (6) are provided on the outside of the metal protective layer (4), which correspond to the two ends of the outer sheath (3) respectively. The combined constraint module (6) includes a constraint disk (61) and a connecting block (62). The number of the connecting blocks (62) is several. The several connecting blocks (62) are positioned on the inner side of the docking end plate (43) through the constraint disk (61) to align with the several tightening side plates (52). The bottom end of the connecting block (62) is fixedly connected to the top end of the corresponding tightening side plate (52) to constrain the tightening side plate (52) and the fastening plate (53) to be in a state outside the outer sheath (3).

2. A corrosion-resistant power cable according to claim 1, characterized in that: The tape-wrapped insulating layer (11) is fixedly connected to the outer wall of the cable body (1), the inner sheath (2) is fixedly connected to the outer wall of the tape-wrapped insulating layer (11), and the metal sheath (41) is fixedly connected to the outer wall of the inner sheath (2).

3. The corrosion-resistant power cable according to claim 1, characterized in that: A plurality of the butt end plates (43) are respectively and annularly fixedly connected to the two ends of the metal sheath (41), and a plurality of the butt end plates (43) in the same plane are connected end to end, and the ends of the buffer waterproof layer (42) are fixedly connected to the inner side walls of the corresponding butt end plates (43).

4. The corrosion-resistant power cable according to claim 1, characterized in that: A butt-jointing shaping ring (44) is provided on the inner side of the butt-jointing end plate (43), and the butt-jointing shaping ring (44) is fixedly connected to the inner side walls of a plurality of the butt-jointing end plates (43). Both ends of the arc-shaped splicing clamping plate (51) are provided with a clamping groove (511) corresponding to the butt-jointing shaping ring (44), and the butt-jointing shaping ring (44) is clamped and connected inside the corresponding clamping groove (511).

5. The corrosion-resistant power cable according to claim 1, characterized in that: The two ends of the arc-shaped splicing splice plate (51) are fixedly connected to the inner side wall of the corresponding butt end plate (43), and the eight arc-shaped splicing splices (51) are distributed in a ring shape on the outside of the buffer waterproof layer (42). The inner side wall of the arc-shaped splicing splice plate (51) is tightly attached to the outer side wall of the buffer waterproof layer (42), and the adjacent side edges of the eight fastening plates (53) are fixedly connected.

6. The corrosion-resistant power cable according to claim 1, characterized in that: The inner side wall of the butt end plate (43) is provided with three grooves (431) corresponding to the tightening side plates (52), and the tightening side plates (52) are snap-fitted and connected inside the corresponding grooves (431).

7. The corrosion-resistant power cable according to claim 1, characterized in that: The outer sheath (3) is located between the arc-shaped splicing clamp plate (51) and the fastening plate (53), and the inner side wall of the outer sheath (3) is fixedly connected to the outer side wall of the arc-shaped splicing clamp plate (51).

8. The corrosion-resistant power cable according to claim 1, characterized in that: The restraining disk (61) is located outside a plurality of the butt end plates (43) on the same plane, the restraining disk (61) is fixedly connected to the arc edge of the butt end plate (43), the connecting block (62) is fixedly connected inside the restraining disk (61), and the connecting block (62) is closely attached to the inner wall of the butt end plate (43).

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