CN217955529U

CN217955529U - Flame-retardant PVC high-voltage cable

Info

Publication number: CN217955529U
Application number: CN202221827930.0U
Authority: CN
Inventors: 徐达秋
Original assignee: Wuxi Yongjia Cable Co ltd
Current assignee: Wuxi Yongjia Cable Co ltd
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2022-12-02
Anticipated expiration: 2032-07-15

Abstract

The utility model belongs to the technical field of the cable, especially, relate to a fire-retardant PVC high tension cable, to the condition that has the dislocation of the inside cable core of current high tension cable, this leads to high tension cable inner structure to be stable inadequately easily, in case the cable core dislocation is serious, the problem that probably influences the use of cable, the following scheme is proposed now, including the protective layer subassembly, the inside of protective layer subassembly is that the annular array is provided with three group's cable cores, three groups the both ends of cable core all are provided with the tip locking Assembly who is used for carrying out locking to three group's cable core tip, three groups be provided with the inside supporting component that the multiunit is used for supporting three group's cable cores between the cable core, the utility model discloses when using, can avoid the condition that the dislocation appears in the inside cable core of long-time use back high tension cable for high tension cable inner structure is comparatively stable, is favorable to long-term use of high tension cable, and is comparatively convenient.

Description

Flame-retardant PVC high-voltage cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a fire-retardant PVC high tension cable.

Background

With the rapid development of economic construction, high-voltage long-distance large-area cables are applied more and more widely, and the flame-retardant PVC high-voltage cable can keep the integrity of a circuit under the condition of fire, ensure the safe and normal operation of the functions of a key emergency system, and is widely applied to fire alarm systems, smoke detection systems, emergency lighting power systems and public broadcasting systems in buildings such as superstores, hospitals, office places, stations, airports, civil houses and the like abroad.

Traditional fire-retardant PVC high tension cable inside generally can set up multiunit cable core, and can set up between multiunit cable core and the outside protective layer and be used for fire-retardant filling layer, uses the back for a long time, can appear the condition of high tension cable inside cable core dislocation, and this leads to high tension cable inner structure to be stable inadequately easily, in case the cable core dislocation is serious, can influence the use of cable, therefore we propose a fire-retardant PVC high tension cable.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving and having the multiunit cable core and can set up between the external protective layer and be used for fire-retardant filling layer among the prior art, long-time the back of using, the condition of high tension cable internal cable core dislocation can appear, this just leads to high tension cable inner structure to be stable inadequately easily, in case the cable core dislocation is serious, can influence the shortcoming of the use of cable, and the fire-retardant PVC high tension cable who proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the flame-retardant PVC high-voltage cable comprises a protective layer assembly, wherein three groups of cable cores are arranged in the protective layer assembly in an annular array, the protective layer assembly comprises a fireproof layer and a heat insulation layer, the fireproof layer is used for preventing fire, and the heat insulation layer is arranged on the inner wall of the fireproof layer;

an environment-friendly fireproof resin layer for fire prevention is arranged between the protective layer assembly and the three groups of cable cores;

three groups the both ends of cable core all are provided with the tip locking Assembly who is used for locking three group cable core tip, three groups be provided with the inside supporting component that the multiunit is used for supporting three group cable cores between the cable core.

Preferably, the protective layer subassembly still includes wearing layer and shielding layer, the wearing layer cladding sets up in the outside of flame retardant coating, the shielding layer sets up on the inner wall of insulating layer.

Preferably, tip locking Assembly includes first triangular supports frame, the equal fixedly connected with solid fixed ring of three tip of first triangular supports frame, three groups gu fixed ring overlaps the outside of locating three groups of cable cores respectively.

Preferably, the internal support component comprises a second triangular support frame, three end parts of the second triangular support frame are fixedly connected with arc-shaped support blocks, and the arc-shaped support blocks are abutted to the outer parts of the three groups of cable cores respectively.

Preferably, the cable core comprises a cable copper core protective sleeve and a multi-strand cable copper core, and the cable copper core protective sleeve is arranged outside the multi-strand cable copper core in a wrapping mode.

Preferably, both ends opening part of protective layer subassembly all is provided with the shutoff board, the hole of dodging that three groups and cable core correspond is seted up to one side of shutoff board.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a first triangular supports frame, gu fixed ring, the design of second triangular supports frame and arc supporting shoe isotructure, utilize first triangular supports frame and three solid fixed rings of group to support and fix the tip of three cable cores of group, utilize second triangular supports frame and juvenile group arc supporting shoe, can support three cable cores of group, the condition that the dislocation appears in the inside cable core of high tension cable after having avoided long-time the use, make high tension cable inner structure comparatively stable, be favorable to high tension cable's long-term use, it is comparatively convenient.

Drawings

Fig. 1 is a schematic sectional structural view of an end portion of a flame retardant PVC high voltage cable according to the present invention;

fig. 2 is a schematic perspective view of a cable core in a flame retardant PVC high voltage cable according to the present invention;

fig. 3 is a schematic perspective view of an end locking assembly in a flame retardant PVC high voltage cable according to the present invention;

fig. 4 is a schematic perspective view of an internal support assembly in a flame retardant PVC high voltage cable according to the present invention;

fig. 5 is the utility model provides a three-dimensional structure schematic diagram of closure plate in fire-retardant PVC high tension cable.

In the figure: 1. a protective layer assembly; 101. a wear layer; 102. a fire barrier layer; 103. a thermal insulation layer; 104. a shielding layer; 2. a cable copper core protective sleeve; 3. a cable copper core; 4. an environment-friendly fireproof resin layer; 5. a first triangular support frame; 6. a fixing ring; 7. a second triangular support frame; 8. an arc-shaped supporting block; 9. a plugging plate; 10. avoiding the hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example one

Referring to fig. 1-5, the flame-retardant PVC high-voltage cable comprises a protective layer assembly 1, wherein three groups of cable cores are arranged in the protective layer assembly 1 in an annular array, the protective layer assembly 1 comprises a fireproof layer 102 for fire prevention and a heat insulation layer 103, and the heat insulation layer 103 is arranged on the inner wall of the fireproof layer 102;

the fireproof layer 102 is set to be a PVC (polyvinyl chloride) fireproof layer, and a smoke suppressant is added into the PVC fireproof layer, so that the fireproof layer 102 can meet the fireproof requirement;

the heat insulation layer 103 is made of a ceramic silicon rubber material, specifically, the heat insulation layer 103 is formed by extruding a ceramic silicon rubber material containing a double-25 vulcanizing agent by a copper pipe rubber extruder and coating the ceramic silicon rubber material on the outer surface of a metal sheath for forming, the ceramic material is formed at a high temperature of more than 350 ℃ in a crusting manner to form a hard protective layer, the formed ceramic material is in a honeycomb shape, when a fire breaks out, the formed ceramic silicon rubber can block flame outside the cable, and the heat insulation effect of the heat insulation layer 103 is obvious due to small holes in the honeycomb shape, so that the internal structure of the cable is protected in the fire, and the internal structure of the cable is prevented from being damaged due to the fire;

an environment-friendly fireproof resin layer 4 for fire prevention is arranged between the protective layer assembly 1 and the three groups of cable cores, wherein the environment-friendly fireproof resin layer 4 is made of polypropylene resin and is used for playing a certain fire prevention role;

the both ends of three cable cores of group all are provided with the tip locking Assembly who is used for locking three cable core tip of group, are provided with the inside supporting component that the multiunit is used for supporting three cable core of group between three cable core of group, utilize tip locking Assembly to support and fix the tip of three cable core of group, utilize the inside supporting component of multiunit to support three cable core of group.

Example two

1-5, improve on the basis of embodiment one: a flame-retardant PVC high-voltage cable comprises a protective layer component 1, wherein three groups of cable cores are arranged in the protective layer component 1 in an annular array, the protective layer component 1 comprises a fireproof layer 102 and a heat insulation layer 103 which are used for preventing fire, the heat insulation layer 103 is arranged on the inner wall of the fireproof layer 102, the protective layer component 1 further comprises a wear-resistant layer 101 and a shielding layer 104, the wear-resistant layer 101 is arranged outside the fireproof layer 102 in a wrapping mode, and the shielding layer 104 is arranged on the inner wall of the heat insulation layer 103;

wherein the wear resistant layer 101 is provided as polytetrafluoroethylene;

wherein shield layer 104 is provided as a semiconducting shield layer;

an environment-friendly fireproof resin layer 4 for fire prevention is arranged between the protective layer assembly 1 and the three groups of cable cores, wherein the environment-friendly fireproof resin layer 4 is polypropylene resin and is used for playing a certain fire prevention role;

the cable core comprises a cable copper core protective sleeve 2 and a multi-strand cable copper core 3, the cable copper core protective sleeve 2 is arranged outside the multi-strand cable copper core 3 in a wrapping mode, and the multi-strand cable copper core 3 can be protected by the cable copper core protective sleeve 2;

the two ends of the three groups of cable cores are respectively provided with an end part locking assembly used for locking the end parts of the three groups of cable cores, the end part locking assembly comprises a first triangular support frame 5, the three end parts of the first triangular support frame 5 are respectively and fixedly connected with fixing rings 6, the three groups of fixing rings 6 are respectively sleeved outside the three groups of cable cores, and the end parts of the three groups of cable cores can be supported and fixed by the three groups of fixing rings 6 in the end part locking assembly;

a plurality of groups of internal supporting components for supporting the three groups of cable cores are arranged among the three groups of cable cores, each internal supporting component comprises a second triangular supporting frame 7, three end parts of each second triangular supporting frame 7 are fixedly connected with arc-shaped supporting blocks 8, the three groups of arc-shaped supporting blocks 8 respectively abut against the outer parts of the three groups of cable cores, and the three groups of cable cores can be supported by the aid of the three groups of arc-shaped supporting blocks 8 in the plurality of groups of internal supporting components;

the opening parts at two ends of the protective layer assembly 1 are provided with plugging plates 9, three groups of avoiding holes 10 corresponding to the cable cores are formed in one side of each plugging plate 9, the plugging plates 9 are used for plugging the openings at two ends of the protective layer assembly 1, and the plugging plates 9 can be detached to connect high-voltage power.

The utility model discloses when specifically using, because protective layer subassembly 1 comprises wearing layer 101, flame retardant coating 102, insulating layer 103 and shielding layer 104, utilize wearing layer 101 can make high tension cable's wear resistance better, utilize flame retardant coating 102 can make high tension cable's fire behavior better, utilize insulating layer 103 can make high tension cable's heat-proof quality better, avoid the cable core inside high tension cable to appear unusual circumstances because of the higher temperature, utilize shielding layer 104 can make high tension cable's shielding property better;

then, the end part locking assembly is sleeved at the end parts of the three groups of cable cores, and the end parts of the three groups of cable cores can be supported and fixed by using three groups of fixing rings 6 in the end part locking assembly;

through the inside supporting component of multiunit that sets up between three cable cores of group, utilize three arc supporting shoes 8 of group in the inside supporting component of multiunit to support three cable cores of group, avoided long-time use back high tension cable inside cable core the condition of dislocation to appear for high tension cable inner structure is comparatively stable, and it is very convenient to use.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a fire-retardant PVC high tension cable, includes protective layer subassembly (1), the inside of protective layer subassembly (1) is the annular array and is provided with three cable cores of group, its characterized in that: the protective layer assembly (1) comprises a fireproof layer (102) for preventing fire and a heat insulation layer (103), wherein the heat insulation layer (103) is arranged on the inner wall of the fireproof layer (102);

an environment-friendly fireproof resin layer (4) for fire prevention is arranged between the protective layer assembly (1) and the three groups of cable cores;

2. The flame-retardant PVC high-voltage cable according to claim 1, characterized in that: the protective layer assembly (1) further comprises a wear-resistant layer (101) and a shielding layer (104), the wear-resistant layer (101) is coated on the outer portion of the fireproof layer (102), and the shielding layer (104) is arranged on the inner wall of the heat insulation layer (103).

3. The flame-retardant PVC high-voltage cable according to claim 1, characterized in that: tip locking Assembly includes first triangular supports frame (5), the solid fixed ring of the equal fixedly connected with of three tip (6) of first triangular supports frame (5), three groups gu fixed ring (6) overlap respectively locates the outside of three cable cores of group.

4. The flame-retardant PVC high-voltage cable according to claim 1, characterized in that: the inner supporting component comprises a second triangular supporting frame (7), three end parts of the second triangular supporting frame (7) are fixedly connected with arc-shaped supporting blocks (8), and the arc-shaped supporting blocks (8) are respectively abutted to the outer parts of the three groups of cable cores.

5. A flame retardant PVC high voltage cable according to any of claims 1-4, characterized in that: the cable core comprises a cable copper core protective sleeve (2) and a multi-strand cable copper core (3), wherein the cable copper core protective sleeve (2) is coated outside the multi-strand cable copper core (3).

6. The flame-retardant PVC high-voltage cable according to claim 1, characterized in that: protective layer subassembly (1) both ends opening part all is provided with shutoff board (9), three group dodge hole (10) that correspond with the cable core are seted up to one side of shutoff board (9).