CN211404122U

CN211404122U - High temperature resistant medium voltage cable of high-efficient fire prevention

Info

Publication number: CN211404122U
Application number: CN201922462576.0U
Authority: CN
Inventors: 尹灵; 张映光
Original assignee: SHENZHEN CHENGTIANTAI CABLE INDUSTRIAL DEVELOPMENT CO LTD
Current assignee: SHENZHEN CHENGTIANTAI CABLE INDUSTRIAL DEVELOPMENT CO LTD
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-01
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to the technical field of cables, in particular to a high-temperature-resistant medium-voltage cable with strong fire prevention effect, which comprises a storage core, wherein a fire-resistant mica tape layer is sleeved outside the storage core, a separation strip is arranged between the fire-resistant mica tape layer and the storage core, a limiting belt is arranged on the inner annular surface of the fire-resistant mica tape layer and the outer annular surface of the storage core, a lead is arranged on the surface of the limiting belt, a through hole is arranged on the surface of the storage core, and oxygen-separation fire-resistant filling layers are filled in the storage core and the fire-resistant mica tape layer; the beneficial effects are that: the utility model provides a high temperature resistant medium voltage cable of high-efficient fire prevention passes through fire-resistant mica tape layer and keeps apart wire and outside inoxidizing coating, and separates the space division between storage core and the fire-resistant mica tape layer through the parting bead for single independent the placing of wire, and the wire outside parcel has the oxygen fire prevention filling layer that separates, promotes the high temperature resistant and the fire behavior of wire, and has avoided single wire then fast even to fire wire on every side.

Description

High temperature resistant medium voltage cable of high-efficient fire prevention

Technical Field

The utility model relates to a relevant technical field of cable specifically is a high temperature resistant medium voltage cable of high-efficient fire prevention.

Background

The cable is generally a cable similar to a rope formed by twisting a plurality of or a plurality of groups of leads (at least two leads in each group), each group of leads are mutually insulated and are usually twisted around a center, a highly-insulated covering layer is wrapped outside the whole cable, the cable has the characteristics of internal electrification and external insulation, and the cable is used as an important carrier for power transmission and is widely used in various industries;

in the prior art, in some high-temperature environments, the cable sheath is easy to age, the surface of the traditional cable is easy to rub and damage, the existing cable has some problems, cannot be forged at high temperature and does not have the fireproof effect, and the cable is easy to be seriously damaged when high temperature or open fire occurs, so that the service life and the use safety of the cable are influenced; therefore, the utility model provides a high temperature resistant medium voltage cable of high-efficient fire prevention is used for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an imitate fire prevention high temperature resistant medium voltage cable by force to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high temperature resistant medium voltage cable of high efficiency fire prevention, includes the storage core, the outside cover of storage core is equipped with fire-resistant mica tape layer, be provided with the branch parting bead between fire-resistant mica tape layer and the storage core, and all be provided with the spacing area on the inner anchor ring of fire-resistant mica tape layer and the outer anchor ring of storage core, the surface of spacing area is provided with the wire, and the through-hole has been seted up on the surface of storage core, and the inside on storage core and fire-resistant mica tape layer all is filled has oxygen-insulated fire prevention filling layer, and the outside cover on fire-resistant mica tape layer is equipped with insulating band layer, the outside cover on insulating band layer is equipped with high temperature resistant layer, the outside cover on high temperature resistant layer is equipped with outer jacket layer, be.

Preferably, the storage core is of a pentagonal tubular structure, the refractory mica tape layer is of a circular tube structure, the five separation strips are located on the bent edges of the storage core, and the five separation strips are distributed correspondingly to the five bent edges of the storage core respectively.

Preferably, the group of limiting belts on the outer annular surface of the storage core and the group of limiting belts on the inner annular surface of the fire-resistant mica tape layer clamp the lead together, and the limiting belts are arranged between every two adjacent separation strips.

Preferably, the through holes are of a round hole structure, two groups of through holes are formed in each side plate of the storage core, and the through holes are communicated with the oxygen-isolating fireproof filling layer between the storage core and the fireproof mica tape layer.

Preferably, insulating band layer, high temperature resistant layer and overcoat layer all are the pipe structure, and wear-resisting sand grip is semi-circular strip structure, and wear-resisting sand grip is provided with a plurality ofly, and the equidistance equidimension such as a plurality of wear-resisting sand grips arranges along the outer anchor ring face of overcoat layer and distributes.

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

1. the utility model provides a high temperature resistant medium voltage cable of high-efficient fire prevention keeps apart wire and external protection layer through fire-resistant mica tape layer, and cuts apart the space between storage core and the fire-resistant mica tape layer through the parting bead for single independent placing of wire, and the wire outside parcel has the fire prevention filling layer of oxygen separation, promotes the high temperature resistant and the fire behavior of wire, and has avoided single wire then fast continuous combustion surrounding wire;

2. the utility model provides an add on the outer anchor ring of the outer jacket layer of high temperature resistant medium voltage cable of high efficiency fire prevention and establish wear-resisting sand grip, the outstanding setting of wear-resisting sand grip, the body of not only being convenient for forms the gap between the line and the wall body and is convenient for the heat dissipation, and reduces the wearing and tearing on outer jacket layer surface.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged schematic view of a structure in fig. 1.

In the figure: the fireproof insulation material comprises a material storage core 1, a fireproof mica tape layer 2, a separation strip 3, a limiting band 4, a lead 5, a through hole 6, an oxygen-isolation fireproof filling layer 7, an insulation belting layer 8, a high-temperature-resistant layer 9, an outer sleeve layer 10 and a wear-resistant convex strip 11.

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.

Referring to fig. 1 to 2, the present invention provides a technical solution: a high-temperature-resistant medium-voltage cable with strong fire resistance comprises a storage core 1, wherein a fire-resistant mica tape layer 2 is sleeved on the outer side of the storage core 1, separation strips 3 are bonded between the fire-resistant mica tape layer 2 and the storage core 1, the storage core 1 is of a pentagonal tubular structure, the fire-resistant mica tape layer 2 is of a circular tube structure, the separation strips 3 are positioned on bent edges of the storage core 1, five separation strips 3 are arranged, and the five separation strips 3 are respectively distributed corresponding to the five bent edges of the storage core 1; limiting belts 4 are bonded on the inner ring surface of the refractory mica tape layer 2 and the outer ring surface of the storage core 1, a group of limiting belts 4 on the outer ring surface of the storage core 1 and a group of limiting belts 4 on the inner ring surface of the refractory mica tape layer 2 clamp a lead 5 together, the limiting belts 4 are arranged between two adjacent separating strips 3, and the lead 5 is bonded on the surfaces of the limiting belts 4; the surface of the storage core 1 is provided with through holes 6, oxygen-isolating fireproof filling layers 7 are filled in the storage core 1 and the fireproof mica tape layer 2, the through holes 6 are in a circular hole-shaped structure, two groups of through holes 6 are arranged on each side plate of the storage core 1, and the through holes 6 are communicated with the oxygen-isolating fireproof filling layers 7 between the storage core 1 and the fireproof mica tape layer 2; the storage core 1 and the fireproof mica tape layer 2 are matched with five separation strips 3 to isolate six cavities, wherein an oxygen-insulating fireproof filling layer 7 filled in the wall body at the center is bulk materials into five cavities at the periphery through holes 6 to realize material intercommunication and material supplement of fillers, a lead 5 is independently placed in the cavities at the periphery, the lead 5 is clamped and limited by two limiting belts 4, the outer side of the lead 5 is wrapped by the oxygen-insulating fireproof filling layer 7, and the situation that the single lead 5 is quickly connected with and burns the peripheral lead 5 after being burnt is avoided;

the outer side of the fireproof mica tape layer 2 is sleeved with an insulating belting layer 8, the outer side of the insulating belting layer 8 is sleeved with a high-temperature-resistant layer 9, the outer side of the high-temperature-resistant layer 9 is sleeved with an outer sleeve layer 10, a wear-resistant raised line 11 is bonded on the outer ring surface of the outer sleeve layer 10, the insulating belting layer 8, the high-temperature-resistant layer 9 and the outer sleeve layer 10 are all in a circular tube-shaped structure, the wear-resistant raised line 11 is in a semicircular strip-shaped structure, the wear-resistant raised lines 11 are provided with a plurality of wear-resistant raised lines 11, and; the insulating belting layer 8, the high temperature resistant layer 9 and the outer sleeve layer 10 are sleeved by an inner ring and an outer ring to protect the internal structure; the wear-resistant convex strips 11 protrude out of the outer ring surface of the outer sleeve layer 10, so that gaps are formed between the wire body and the wall body to facilitate heat dissipation, and abrasion on the surface of the outer sleeve layer 10 is reduced.

The working principle is as follows: during actual work, the storage core 1 and the fireproof mica tape layer 2 are matched with five separation strips 3 to separate six cavities, wherein an oxygen-separation fireproof filling layer 7 filled in the wall body at the center distributes materials into five cavities at the periphery through holes 6, so that the material intercommunication and material supplement of the fillers are realized, a lead 5 is independently placed in the cavities at the periphery, the lead 5 is clamped and limited by two limiting belts 4, the outer side of the lead 5 is wrapped by the oxygen-separation fireproof filling layer 7, and the situation that the peripheral lead 5 is quickly connected and burnt after a single lead 5 is burnt is avoided; the insulating belting layer 8, the high temperature resistant layer 9 and the outer sleeve layer 10 are sleeved by an inner ring and an outer ring to protect the internal structure; the wear-resistant convex strips 11 protrude out of the outer ring surface of the outer sleeve layer 10, so that gaps are formed between the wire body and the wall body to facilitate heat dissipation, and abrasion on the surface of the outer sleeve layer 10 is reduced.

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

1. The utility model provides a high temperature resistant medium voltage cable of high-efficient fire prevention, includes storage core (1), its characterized in that: a fireproof mica tape layer (2) is sleeved on the outer side of the storage core (1), a separation strip (3) is arranged between the fireproof mica tape layer (2) and the storage core (1), and the inner ring surface of the fireproof mica tape layer (2) and the outer ring surface of the storage core (1) are both provided with a spacing belt (4), the surface of the limiting belt (4) is provided with a lead (5), the surface of the storage core (1) is provided with a through hole (6), the interiors of the storage core (1) and the fireproof mica tape layer (2) are both filled with an oxygen-isolating fireproof filling layer (7), the outer side of the fireproof mica tape layer (2) is sleeved with an insulating belting layer (8), a high temperature resistant layer (9) is sleeved on the outer side of the insulating belting layer (8), an outer sleeve layer (10) is sleeved on the outer side of the high temperature resistant layer (9), and the outer ring surface of the outer sleeve layer (10) is provided with a wear-resistant convex strip (11).

2. The high-efficiency fireproof high-temperature-resistant medium-voltage cable according to claim 1, wherein: the storage core (1) is of a pentagonal tubular structure, the refractory mica tape layer (2) is of a circular tube structure, the five separation strips (3) are located on the bent edges of the storage core (1), and the five separation strips (3) are distributed correspondingly to the five bent edges of the storage core (1).

3. The high-efficiency fireproof high-temperature-resistant medium-voltage cable according to claim 1, wherein: the lead wire is characterized in that a group of limiting belts (4) on the outer annular surface of the storage core (1) and a group of limiting belts (4) on the inner annular surface of the fireproof mica tape layer (2) clamp the lead wire (5) together, and the limiting belts (4) are arranged between every two adjacent separating strips (3).

4. The high-efficiency fireproof high-temperature-resistant medium-voltage cable according to claim 1, wherein: the through holes (6) are of a round hole structure, two groups of through holes (6) are formed in each side plate of the storage core (1), and the through holes (6) are communicated with the oxygen-isolating fireproof filling layer (7) between the storage core (1) and the fireproof mica tape layer (2).

5. The high-efficiency fireproof high-temperature-resistant medium-voltage cable according to claim 1, wherein: insulating band layer (8), high temperature resistant layer (9) and overcoat layer (10) all are the pipe structure, and wear-resisting sand grip (11) are semi-circular strip structure, and wear-resisting sand grip (11) are provided with a plurality ofly, and a plurality of wear-resisting sand grips (11) equidistance equidimension are arranged along the outer anchor ring face of overcoat layer (10) and are distributed.