CN220933809U

CN220933809U - Low-smoke halogen-free fireproof cable

Info

Publication number: CN220933809U
Application number: CN202322436141.5U
Authority: CN
Inventors: 杨小力; 李昌兵; 杨小凡
Original assignee: Shenzhen Youxian Cable Co ltd
Current assignee: Shenzhen Youxian Cable Co ltd
Priority date: 2023-09-08
Filing date: 2023-09-08
Publication date: 2024-05-10
Anticipated expiration: 2033-09-08

Abstract

The utility model relates to the technical field of cables, in particular to a low-smoke halogen-free fireproof cable which comprises a low-smoke halogen-free polyolefin sheath and a silicone rubber insulating sleeve, wherein an isolation mechanism is arranged on the outer wall of the silicone rubber insulating sleeve and comprises an insulating isolation ring, the inner wall of the insulating isolation ring is attached to the silicone rubber insulating sleeve, the inner wall of the insulating isolation ring is movably connected with an isolation strip, the outer wall of the isolation strip is fixedly connected with an isolation pad, and the inner wall of the isolation pad is abutted against an inorganic filler. The inside has mineral substance to separate oxygen layer to extrude inside oxygen, makes inside have very little, avoids having oxygen combustion-supporting, and inside inorganic filler protects the copper core conductor to isolating strip and the isolation pad on the insulating isolation circle separate the copper core conductor, inside still has inorganic filler to protect and extrude, makes inside air reduce to minimum, with this fire behavior that improves inside.

Description

Low-smoke halogen-free fireproof cable

Technical Field

The utility model relates to the technical field of cables, in particular to a low-smoke halogen-free fireproof cable.

Background

As is known, fire-resistant halogen-free low-smoke cables for transmitting electric energy, information and wire products for electromagnetic energy conversion comprise one or more insulated wire cores, and their respective coatings, overall protective layers and outer protective layers.

For example, the low smoke zero halogen fireproof cable with the authorized bulletin number of 'CN 214860648U', although solving the problem that the existing low smoke zero halogen fireproof cable is not good in cooling effect and the deformation resistance of most fireproof zero halogen low smoke cables is not good, the plurality of threaded holes are intersected with the cavity, one ends of the plurality of first heat conducting rings are respectively provided with the telescopic pipes, the plurality of second heat conducting rings are respectively provided with the other cavities, one ends of the plurality of second heat conducting rings are respectively provided with the other threaded holes, the threaded connection is provided with bolts, the plurality of threaded holes are intersected with the cavities, the heat conducting rings can be considered to be carried out, oxygen can be contained in the cavity inside the heat conducting rings, combustion supporting of fire and internal materials can be accelerated, and the internal fireproof performance is reduced.

Disclosure of utility model

The utility model aims to solve the problem that the internal fireproof performance is reduced because oxygen is contained in an internal cavity of a heat conducting ring of the existing low-smoke halogen-free fireproof cable and the combustion supporting of fire and internal materials is accelerated.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a low smoke and zero halogen fireproof cable, includes low smoke and zero halogen polyolefin sheath and silicone rubber insulation cover, the outer wall of silicone rubber insulation cover is equipped with isolation mechanism, isolation mechanism includes insulating isolation circle, insulating isolation circle's inner wall is laminated mutually with the silicone rubber insulation cover, insulating isolation circle's inner wall and isolation strip swing joint, isolation strip's outer wall and isolation pad fixed connection, isolation pad's inner wall offsets tightly with inorganic filler.

Preferably, the outer wall of the insulating isolation ring is fixedly connected with the first rubber block, the outer wall of the first rubber block is fixedly connected with the first semicircular ring, the outer wall of the first semicircular ring is abutted against the second semicircular ring, and the outer wall of the second semicircular ring is fixedly connected with the second rubber block.

Preferably, the inner wall of the low-smoke halogen-free polyolefin sheath is jointed with the tinned copper mesh, and the outer wall of the tinned copper mesh is jointed with the PE inner sheath.

Preferably, the inner wall of the PE inner sheath is attached to the silver foil paper shielding layer, and the inner wall of the silver foil paper shielding layer is attached to the mineral oxygen-isolating layer.

Preferably, the inner wall of the silicon rubber insulating sleeve is attached to the mineral insulation.

Preferably, the mineral insulated inner wall is bonded to the copper core conductor.

The low-smoke halogen-free fireproof cable provided by the utility model has the beneficial effects that: the inside has mineral substance to separate oxygen layer to extrude inside oxygen, makes inside have very little, avoids having oxygen combustion-supporting, and inside inorganic filler protects the copper core conductor to isolating strip and the isolation pad on the insulating isolation circle separate the copper core conductor, inside still has inorganic filler to protect and extrude, makes inside air reduce to minimum, with this fire behavior that improves inside.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional elevation view of the structure of FIG. 1;

FIG. 3 is an enlarged schematic view of the insulating spacer ring of FIG. 1;

Fig. 4 is an enlarged schematic view of the structure at a in fig. 2.

In the figure: 1. a low smoke zero halogen polyolefin sheath, 2, a silicon rubber insulating sleeve, 3, an isolating mechanism, 301, an insulating isolation ring, 302, isolation strips, 303, an isolation pad, 304, an inorganic filler, 4, a first rubber block, 5, a first semicircle ring, 6, a second semicircle ring, 7, a second rubber block, 8, a tinned copper mesh braid, 9, a PE inner sheath, 10, a silver foil paper shielding layer, 11, a mineral substance oxygen-isolation layer, 12, mineral substance insulation, 13 and a copper core conductor.

Detailed Description

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.

Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a low smoke and zero halogen fireproof cable, including low smoke and zero halogen polyolefin sheath 1 and silicone rubber insulation cover 2, the outer wall of silicone rubber insulation cover 2 is equipped with isolation mechanism 3, separate copper core conductor 13 through the spacer 302 and the isolation pad 303 on insulating spacer 301, inside still has inorganic filler 304 to protect and extrude, realize the isolation to inside copper core conductor 13, avoid producing the direct danger of conflagration, isolation mechanism 3 includes insulating spacer 301, the inner wall of insulating spacer 301 is laminated with silicone rubber insulation cover 2 mutually, the inner wall and the spacer 302 swing joint of insulating spacer 301, the outer wall and the isolation pad 303 fixed connection of spacer 302, the inner wall and the inorganic filler 304 of isolation pad 303 offset tightly;

The mineral substance oxygen-isolating layer 11 is used for extruding internal oxygen, so that the internal oxygen is extremely small, combustion supporting of oxygen is avoided, the copper core conductor 13 is protected by the internal inorganic filler 304, the copper core conductor 13 is isolated by the isolating strips 302 and the isolating pads 303 on the insulating isolating ring 301, the internal air is minimized by the protection and extrusion of the internal inorganic filler 304, and the internal fireproof performance is improved.

Referring to fig. 1, 2 and 4, the outer wall of the insulating spacer 301 is fixedly connected with the first rubber block 4, the outer wall of the first rubber block 4 is fixedly connected with the first semicircular ring 5, the outer wall of the first semicircular ring 5 abuts against the second semicircular ring 6, and the outer wall of the second semicircular ring 6 is fixedly connected with the second rubber block 7.

Referring to fig. 1 and 2, the inner wall of the low smoke zero halogen polyolefin sheath 1 is attached to the tinned copper mesh braid 8, the outer wall of the P tinned copper mesh braid 8 is attached to the PE inner sheath 9, the inner wall of the PE inner sheath 9 is attached to the silver foil paper shielding layer 10, and the inner wall of the silver foil paper shielding layer 10 is slidably connected with the mineral oxygen-isolating layer 11.

Referring to fig. 1 and 2, the inner wall of the pe inner sheath 9 is bonded to the silver foil paper shielding layer 10, the inner wall of the silver foil paper shielding layer 10 is bonded to the mineral oxygen-insulating layer 11, the inner wall of the silicone rubber insulating sleeve 2 is bonded to the mineral insulation 12, and the inner wall of the mineral insulation 12 is bonded to the copper core conductor 13.

Working principle:

The polyolefin material is used through the outside material of the low smoke zero halogen polyolefin sheath 1, the harmful smoke that has the burning and produce is very little, inside also has silver foil paper shielding layer 10 to shield the outside, avoid using and receive outside interference, its inside has mineral substance to separate oxygen layer 11 to extrude inside oxygen, make inside existence very little, avoid having oxygen combustion-supporting, inside inorganic filler 304 protects copper core conductor 13, avoid receiving outside pressure and receive the destruction, the barrier rib 302 on the insulating spacer 301 is in the active state with the connection of barrier rib 303, make things convenient for inside copper core conductor 13 to take out, and insulating spacer 301 and barrier rib 302 also can protect, first semicircle ring 5 on the first rubber piece 4 and second semicircle ring 6 on the second rubber piece 7 support inside, buffer protection is carried out inside, shape and normal use of copper core conductor 13 are maintained.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a low smoke and zero halogen fireproof cable, includes low smoke and zero halogen polyolefin sheath (1) and silicone rubber insulation cover (2), its characterized in that: the outer wall of the silicon rubber insulating sleeve (2) is provided with an insulating mechanism (3), the insulating mechanism (3) comprises an insulating isolation ring (301), the inner wall of the insulating isolation ring (301) is attached to the silicon rubber insulating sleeve (2), the inner wall of the insulating isolation ring (301) is movably connected with an isolation strip (302), the outer wall of the isolation strip (302) is fixedly connected with an isolation pad (303), and the inner wall of the isolation pad (303) is abutted against an inorganic filler (304).

2. A low smoke zero halogen fire cable according to claim 1, wherein: the outer wall of insulating spacer ring (301) and first rubber piece (4) fixed connection, the outer wall and the first semicircle ring (5) fixed connection of first rubber piece (4), the outer wall and the second semicircle ring (6) of first semicircle ring (5) offset tightly, the outer wall and the second rubber piece (7) fixed connection of second semicircle ring (6).

3. A low smoke zero halogen fire cable according to claim 1, wherein: the inner wall of the low-smoke halogen-free polyolefin sheath (1) is attached to the tinned copper mesh (8), and the outer wall of the tinned copper mesh (8) is attached to the PE inner sheath (9).

4. A low smoke zero halogen fire cable according to claim 3, wherein: the inner wall of the PE inner sheath (9) is attached to the silver foil paper shielding layer (10), and the inner wall of the silver foil paper shielding layer (10) is attached to the mineral substance oxygen-isolating layer (11).

5. A low smoke zero halogen fire cable according to claim 1, wherein: the inner wall of the silicon rubber insulating sleeve (2) is attached to the mineral insulation (12).

6. A low smoke zero halogen fire cable as defined in claim 5 wherein: the inner wall of the mineral insulation (12) is attached to the copper core conductor (13).