CN211788315U - Isolated form mineral insulation fireproof cable - Google Patents

Abstract

The utility model discloses an isolation type mineral insulation fireproof cable, which comprises an inner sleeve, wherein a circular groove is arranged inside the inner sleeve, the inner part of the circular groove is symmetrically provided with four mineral substance insulating sleeves, the inner parts of the four mineral substance insulating sleeves are all provided with a conductor groove, the fireproof layer is arranged on the utility model, the fireproof capacity of the whole cable can be improved, the arranged isolation groove can reduce certain transmission of external temperature and improve the high temperature resistance of the cable, the arranged arc-shaped pressure-resistant layer, can reduce the extrusion of the cable from the outside, and prevent the conditions of wire breakage and the like caused by the damage of the inner conductor, and the low-smoke halogen-free flame-retardant sheath is arranged, can reduce the toxic gas generated when the cable is fired or short-circuited and damaged, effectively solves the problem that the fire resistance of the common cable is relatively poor, the problems of short circuit or burnout and the like easily occur under the environment of high temperature and fire source for a long time.

Description

Isolated form mineral insulation fireproof cable

Technical Field

The utility model relates to a lead cable, in particular to isolated form mineral insulation fireproof cable belongs to cable technical field.

Background

A cable is made up of one or more mutually insulated conductors and an outer insulating layer, the conductors of each group being insulated from each other and twisted around a center, the whole being covered with a highly insulating covering and having characteristics of internal current conduction and external insulation.

At present, in order to prevent data loss of some equipment lines caused by burning out or short circuit of cables, fire-resistant outer sleeves are generally adopted to wrap the cables during cable production, the fire resistance of the common cables is not particularly remarkable, and the cables are often easily burnt out or short circuit occurs under the environment of high temperature and fire sources for a long time.

Disclosure of Invention

The utility model provides an isolated form mineral insulation fireproof cable, the effectual fire behavior who has solved general cable is relatively poor, appears the short circuit easily or is burnt out the scheduling problem under the environment that is in high temperature and burning things which may cause a fire disaster for a long time.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model relates to an isolated mineral insulation fireproof cable, which comprises an inner sleeve, wherein a circular groove is arranged inside the inner sleeve, four mineral insulation sleeves are symmetrically arranged inside the circular groove, a conductor groove is arranged inside each mineral insulation sleeve, a plurality of conductors are arranged inside each conductor groove, an aluminum alloy sleeve isolation layer is fixedly sleeved outside each mineral insulation sleeve, mineral fillers are filled inside the circular groove, a fireproof layer is fixedly sleeved outside the inner sleeve, an isolation groove is arranged on the surface of the fireproof layer, a plurality of arc-shaped compression layers are symmetrically arranged inside each isolation groove, one end of each arc-shaped compression layer, which is close to the top groove wall of each isolation groove, is fixedly connected with the top end of each isolation groove, and a waterproof layer is fixedly sleeved outside each mineral insulation layer, and the outer side of the waterproof layer is fixedly sleeved with an outer sleeve.

As an optimal technical scheme of the utility model, the fixed winding in the waterproof layer outside has the fire-retardant area of one deck glass silk, just the fire-retardant area of glass silk is the winding of half folding formula.

As an optimized technical scheme of the utility model, the material of mineral substance insulating cover is the auro mica tape, the material of mineral substance filler is magnesium oxide.

As an optimized technical scheme of the utility model, the overcoat is the fire-retardant sheath of low smoke and zero halogen of polyethylene material.

As an optimal technical scheme of the utility model, the flame retardant coating material is alkali-free glass fiber, the material of endotheca, arc compressive layer, waterproof layer is the silicon rubber material.

As an optimal technical scheme of the utility model, the conductor is the copper core sticiss circular transposition conductor.

The utility model discloses the beneficial effect who reaches is: the utility model discloses a flame retardant coating that sets up, can improve the holistic fire behavior of cable, isolation tank through setting up, certain transmission that can reduce external temperature improves the high temperature resistance ability of cable, through the arc compressive layer that sets up, can reduce the extrusion that the cable received from the outside etc., prevent that the impaired situations such as broken string appear in inner conductor, through the fire-retardant sheath of low smoke and zero halogen that sets up, can reduce the cable and catch fire or the produced toxic gas when the short circuit is impaired, the effectual fire behavior of having solved general cable is relatively poor, appear the short circuit easily or burnt out the scheduling problem under the environment that is in high temperature and burning source for a long time.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of the present invention at A in FIG. 1;

fig. 3 is a schematic view of the whole structure of the fire-proof layer of the present invention.

In the figure: 1. an inner sleeve; 2. a circular groove; 3. a mineral insulating sleeve; 4. a conductor slot; 5. a conductor; 6. an aluminum alloy jacket isolation layer; 7. a mineral filler; 8. a fire barrier layer; 9. an isolation trench; 10. an arc-shaped pressure-resistant layer; 11. a waterproof layer; 12. a jacket; 13. glass fiber flame retardant tape.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): as shown in fig. 1-3, the utility model relates to an isolated mineral insulation fireproof cable, which comprises an inner sleeve 1, wherein a circular groove 2 is arranged inside the inner sleeve 1, four mineral insulation sleeves 3 are symmetrically arranged inside the circular groove 2, a conductor groove 4 is arranged inside each of the four mineral insulation sleeves 3, a plurality of conductors 5 are arranged inside each of the four conductor grooves 4, an aluminum alloy sleeve isolation layer 6 is fixedly sleeved outside each of the mineral insulation sleeves 3, a mineral filler 7 is filled inside each of the circular grooves 2, a fireproof layer 8 is fixedly sleeved outside each of the inner sleeve 1, an isolation groove 9 is arranged on the surface of each of the fireproof layers 8, a plurality of arc-shaped pressure-resistant layers 10 are symmetrically arranged inside each of the isolation grooves 9, one end of each of the arc-shaped pressure-resistant layers 10 close to the top groove wall of the isolation groove 9 is fixedly connected with the top end of the isolation groove 9, a waterproof layer 11 is fixedly sleeved outside each of the mineral fireproof layer 8, an outer sleeve 12 is fixedly sleeved on the outer side of the waterproof layer 11.

A layer of glass fiber flame-retardant belt 13 is fixedly wound on the outer side of the waterproof layer 11, and the glass fiber flame-retardant belt 13 is wound in a half-lap mode, so that the flame-retardant capability of the cable is improved.

The mineral insulating sleeve 3 is made of a phlogopite tape, and the mineral filler 7 is made of magnesium oxide, so that the electric insulation property, the heat resistance and the corrosion resistance of the cable are improved.

The jacket 12 is a low-smoke halogen-free flame-retardant sheath made of polyethylene, and is used for insulating external heat and reducing the generation of harmful gases.

The fireproof layer 8 is made of alkali-free glass fiber, the inner sleeve 1, the arc-shaped anti-pressure layer 10 and the waterproof layer 11 are made of silicon rubber, and fireproof and waterproof capabilities of the cable are improved.

The conductors 5 are copper core compacted round stranded conductors, so that the conductive capacity is improved, and gaps among the conductors 5 are reduced.

Specifically, the utility model discloses during the use, because the mineral substance insulation cover 3 is the mica tape, because the mica tape belongs to a kind of iron, magnesium and potassium aluminosilicate's mineral substance, consequently, has stronger insulating ability, can prevent through the setting of mineral substance insulation cover 3 that the electric current on the conductor 5 from leaking outward, and because the material of mineral substance insulation cover 3 is the aurum mica tape, do not compound with crowded package insulating material and form, thereby can get rid of the production of charcoal grain, improve the stability of resistant electricity, because mineral substance filler 7 is magnesium oxide, because magnesium oxide is the inorganic non-metallic material of a performance excellence, have stronger electrical insulation, heat resistance and corrosion resistance, through the setting of mineral substance filler 7, can improve the holistic electrical insulation and the heat resistance of cable when increasing the corrosion resistance for the cable, because flame retardant coating 8 is alkali-free glass fiber, because alkali-free glass fiber has better heat resistance and incombustibility, through the setting of the fireproof layer 8, the whole fireproof capability of the cable can be further improved, and through the setting of the conductor groove 4, the contact surface of heat transmission can be reduced, so that the whole heat resistance of the cable can be improved again, the arc-shaped pressure-resistant layer 10 is arranged in an arc shape, the external extrusion and the like of the conductor 5 can be reduced, the disconnection of the conductor 5 can be prevented, the waterproof layer 11 is made of silicon rubber, the waterproof capability and the moisture resistance of the whole cable can be improved through the setting of the waterproof layer 11, water can be prevented from entering the cable, the outer sleeve 12 is a low-smoke halogen-free flame-retardant sheath made of polyethylene, the outer sleeve has the characteristics of not releasing halogen acid and self extinguishing, through the setting of the low-smoke halogen-free flame-retardant sheath, the toxic gas generated when the cable accidentally catches fire or is damaged due to short circuit can be reduced while the whole cable is improved, the problems that the fireproof capacity of a common cable is relatively poor, short circuit or burnout easily occurs in the environment of high temperature and fire sources for a long time and the like are effectively solved.

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

Claims (6)

1. An isolated mineral insulation fireproof cable is characterized by comprising an inner sleeve (1), wherein a circular groove (2) is formed in the inner sleeve (1), four mineral insulation sleeves (3) are symmetrically arranged in the circular groove (2), a conductor groove (4) is formed in each of the four mineral insulation sleeves (3), a plurality of conductors (5) are arranged in each of the four conductor grooves (4), an aluminum alloy sleeve isolation layer (6) is fixedly sleeved on the outer side of each of the mineral insulation sleeves (3), mineral fillers (7) are filled in each of the circular grooves (2), a fireproof layer (8) is fixedly sleeved on the outer side of the inner sleeve (1), an isolation groove (9) is formed in the surface of each of the fireproof layers (8), a plurality of arc-shaped pressure resistant layers (10) are symmetrically arranged in each of the isolation grooves (9), and one end of the arc-shaped anti-pressure layer (10) close to the top groove wall of the isolation groove (9) is fixedly connected with the top groove wall of the isolation groove (9), a waterproof layer (11) is fixedly sleeved on the outer side of the mineral fire-proof layer (8), and an outer sleeve (12) is fixedly sleeved on the outer side of the waterproof layer (11).

2. The isolated mineral insulated fireproof cable according to claim 1, wherein a layer of glass fiber flame retardant tape (13) is fixedly wound on the outer side of the waterproof layer (11), and the glass fiber flame retardant tape (13) is wound in a half-lap manner.

3. The isolated mineral insulated fireproof cable according to claim 1, wherein the mineral insulating sheath (3) is a phlogopite tape, and the mineral filler (7) is magnesium oxide.

4. An isolated mineral insulated fireproof cable according to claim 1, wherein the outer jacket (12) is a low smoke, zero halogen and flame retardant sheath of polyethylene.

5. The isolated mineral insulated fireproof cable of claim 1, wherein the fireproof layer (8) is made of alkali-free glass fiber, and the inner sleeve (1), the arc-shaped anti-pressure layer (10) and the waterproof layer (11) are made of silicon rubber.

6. An isolated mineral insulated fireproof cable according to claim 1, wherein the conductor (5) is a copper compacted round stranded conductor.

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