CN212209004U - High-practicability fireproof cable - Google Patents

Abstract

The utility model discloses a high practicality fireproof cable, concretely relates to ink jet numbering machine technical field, including the sinle silk, the outer surface winding of sinle silk has the flame retardant coating, the fixed insulating layer that is equipped with in the outside of flame retardant coating, the quantity of sinle silk sets up to three, and is three the sinle silk is the annular setting, and three the outer fixed surface of sinle silk is equipped with the inner sheath, the outer fixed surface of inner sheath is equipped with around the band, be equipped with the oversheath around the outer fixed surface of band. This fireproof cable's three sinle silk is the annular setting, and the fixed surface of three sinle silk is equipped with the inner sheath, the fixed surface of inner sheath is equipped with around the band, be equipped with the oversheath around the fixed surface of band, the inner sheath all sets up to fire-retardant polyvinyl chloride sheath with the oversheath, and the structure flexibility of whole cable is good, and fire behavior is stronger, and safety and stability is high, and the practicality is better, does benefit to popularization and application.

Description

High-practicability fireproof cable

Technical Field

The utility model relates to the technical field of cables, concretely relates to high practicality fireproof cable.

Background

The cable is usually a cable similar to a rope formed by twisting a plurality of or a plurality of groups of wires, each group of wires are mutually insulated and are usually twisted around a center, the whole cable is wrapped with a highly-insulated covering layer, the cable has the characteristics of internal electrification and external insulation, and along with the continuous improvement of the social security protection guarantee and system safety requirements, through the wide propaganda, promotion and cooperation of governments, industries and enterprises, a special cable product with high performance, high efficiency and safety is bound to be widely applied to various industry systems like developed countries in the west;

the fireproof cable belongs to one of special cables, is a general name of the wire cable with fireproof performance, and is integrally made of inorganic materials, so that the whole fireproof cable is not burnt or delayed to burn and is subjected to fire burning. The safe and reliable operation of the cable can be ensured.

The prior art has the following defects: fireproof cable among the prior art's structural flexibility is relatively poor, and safety and stability is not high, leads to fireproof cable's practicality relatively poor, is unfavorable for popularizing and applying.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a high practicality fireproof cable aims at solving the fireproof cable among the prior art's the structure flexibility relatively poor, and safety and stability nature is not high, and the practicality that leads to fireproof cable is relatively poor, is unfavorable for the problem of popularization and application.

In order to achieve the above object, the present invention provides the following technical solutions:

according to the utility model discloses a first aspect, a high practicality fireproof cable, including the sinle silk, the surface winding of sinle silk has the flame retardant coating, the fixed insulating layer that is equipped with in the outside of flame retardant coating, the quantity of sinle silk sets up to three, it is three the sinle silk is the annular setting, and is three the fixed surface of sinle silk is equipped with the inner sheath, the fixed surface of inner sheath is equipped with around the band, be equipped with the oversheath around the fixed surface of band.

Further, the wire core is set to be an oxygen-free pure copper compact conductor or a single solid copper conductor, and the insulating layer is set to be a cross-linked polyvinyl chloride insulating layer.

Further, the fire-resistant layer is a fire-resistant mica tape, and the thickness of the fire-resistant layer is set to be 0.11 +/-0.02 mm.

Further, filling parts 7 are arranged between the outer parts of the three wire cores and the inner sheath, and the filling parts 7 are arranged into polypropylene grid belts.

Further, the inner sheath and the outer sheath are both made of flame-retardant polyvinyl chloride sheaths, and the thickness of the inner sheath and the outer sheath is 0.41-0.58 mm.

Further, the wrapping tape is a low halogen-free flame retardant tape, and the thickness of the wrapping tape is 0.32-0.45 mm.

Further, the lateral wall equidistance of oversheath distributes and is equipped with a plurality of ribs protrudingly, and the bellied cross section of a plurality of ribs is semicircular.

Furthermore, the end part of the outer sheath is fixedly provided with an end sleeve, and the inner side wall of the end sleeve is provided with a plurality of caulking grooves matched with the rib protruding structures.

Further, the end sleeve is arranged to be in a structure that the copper strip longitudinally wraps a welding embossing.

The utility model has the advantages of as follows:

1. this outer surface rich package of fireproof cable's sinle silk has the flame retardant coating, the fixed insulating layer that is equipped with in the outside of flame retardant coating, and simultaneously, the sinle silk sets up to three, three sinle silk is the annular setting, and the outer fixed surface of three sinle silk is equipped with the inner sheath, the outer fixed surface of inner sheath is equipped with around the area, be equipped with the oversheath around the surface of area, the inner sheath all sets up to fire-retardant polyvinyl chloride sheath with the oversheath, it is better fire-retardant to have, prolong the effect of burning, can improve the fire behavior of whole cable, the simultaneous structure is flexible good, easily prolong, the practicality is high, set up to low halogen-free fire-retardant area around the area, it is better fire-retardant to have, prolong the effect of burning, the structure flexibility of whole cable is good, fire behavior is.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a front view provided by the present invention;

fig. 2 is a schematic structural diagram of the inner conductor according to the present invention;

fig. 3 is a cross-sectional view provided by the present invention;

fig. 4 is a perspective view of the end cap provided by the present invention;

in the figure: 1. a wire core; 2. an inner sheath; 3. wrapping a tape; 4. an outer sheath; 5. the ribs are convex; 6. end sleeves; 7. a filling section; 8. a refractory layer; 9. an insulating layer; 10. and (4) caulking grooves.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. 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 the attached drawings 1-4 in the specification, the high-practicability fireproof cable comprises a wire core 1, a fireproof layer 8 wraps the outer surface of the wire core 1, an insulating layer 9 is fixedly arranged on the outer side of the fireproof layer 8, the number of the wire cores 1 is three, the wire cores 1 are arranged in an annular mode, the number of the wire cores 1 is three, an inner sheath 2 is fixedly arranged on the outer surface of the wire cores 1, a winding tape 3 is fixedly arranged on the outer surface of the inner sheath 2, and an outer sheath 4 is fixedly arranged on the outer surface of the winding tape 3.

Furthermore, the wire core 1 is an oxygen-free pure copper compact conductor or a single solid copper conductor, the insulating layer 9 is a cross-linked polyvinyl chloride insulating layer, the cable conductor is formed by twisting a plurality of wires, an air gap is easily formed between the cable conductor and the insulating layer, the surface of the cable conductor is not smooth, and an electric field can be concentrated, and a shielding layer made of a semi-conductive material is added on the surface of the cable conductor, is equipotential with the shielded conductor and is in good contact with the insulating layer, so that partial discharge between the cable conductor and the insulating layer is avoided, and the cable conductor mainly plays a role in shielding the electric field.

Furthermore, the fire-resistant layer 8 is a fire-resistant mica tape, the thickness of the fire-resistant mica tape is set to be 0.11 +/-0.02 mm, and the fire-resistant mica tape is used as a main insulating fire-resistant layer of the cable and plays a critical role in the safe use of the cable.

Further, it is three be provided with packing portion 7 between the outside of sinle silk 1 and the inner sheath 2, and packing portion 7 sets to polypropylene net area, is used for the inner sheath 2 three be used for guaranteeing to keep relatively fixed between the three sinle silk 1 structure between the sinle silk 1, guarantee the sufficient degree of 2 inner structure of inner sheath simultaneously, guarantee the stability of structure.

Furthermore, the inner sheath 2 and the outer sheath 4 are both set to be flame-retardant polyvinyl chloride sheaths, the thickness is set to be 0.41-0.58mm, the flame-retardant polyvinyl chloride cable has better flame-retardant and flame-retardant effects, the fireproof performance of the whole cable can be improved, and meanwhile, the cable is good in structural flexibility, easy to extend and high in practicability.

Furthermore, the wrapping tape 3 is a low halogen-free flame retardant tape, has good flame retardant and flame retardant effects, and has a thickness of 0.32-0.45 mm.

Further, the lateral wall equidistance of oversheath 4 distributes and is equipped with a plurality of ribs protruding 5, and the transversal semicircular in shape of a plurality of ribs protruding 5, guarantees that the installation of whole cable is fixed, and the practicality is better.

Further, the end portion of the outer sheath 4 is fixedly provided with an end sleeve 6, the inner side wall of the end sleeve 6 is provided with a plurality of caulking grooves 10 matched with the rib protrusions 5 in structure, and stability of a fixing structure between the end sleeve 6 and the whole cable is guaranteed.

Furthermore, the end sleeve 6 is arranged to be of a copper strip longitudinally wrapped welding embossing structure, and the flexible structure is good.

The implementation scenario is specifically as follows: when the utility model is used, the outer surface of the wire core 1 is wrapped by the fire-resistant layer 8, the outer side of the fire-resistant layer 8 is fixedly provided with the insulating layer 9, the wire core 1 is set to be oxygen-free pure copper to press tightly the conductor or a single solid copper conductor, the fire-resistant layer 8 is a fire-resistant mica tape, the thickness is set to be 0.11 +/-0.02 mm, the fire-resistant mica tape is used as the main insulating fire-resistant layer of the cable, which plays a critical role in the safe use of the cable, the insulating layer 9 is set to be a cross-linked polyvinyl chloride insulating layer, the cable conductor is formed by twisting stranded wires, an air gap is easy to form between the cable conductor and the insulating layer, the surface of the conductor is not smooth, the electric field concentration can be caused, a layer of a shielding layer of a semi-conductive material is added on the surface of the conductor, the shielding layer is equipotential with the, the three wire cores 1 are arranged in an annular shape, the inner sheath 2 is fixedly arranged on the outer surface of each wire core 1, the wrapping tape 3 is fixedly arranged on the outer surface of each inner sheath 2, the outer sheath 4 is fixedly arranged on the outer surface of each wrapping tape 3, the inner sheath 2 and the outer sheath 4 are both arranged to be flame-retardant polyvinyl chloride sheaths, the thickness is 0.41-0.58mm, the cable has good flame-retardant and flame-retardant effects, the fireproof performance of the whole cable can be improved, meanwhile, the cable is good in structural flexibility, easy to prolong and high in practicability, the wrapping tapes 3 are arranged to be low-halogen-free flame-retardant tapes, the cable has good flame-retardant and flame-retardant effects, the thickness is 0.32-0.45mm, the whole cable is good in structural flexibility, high in fireproof performance, high in safety and stability, good;

the working principle is as follows: referring to the attached drawings 1-4 of the specification, the outer surface of each wire core 1 is wrapped with a flame retardant coating 8, an insulating layer 9 is fixedly arranged on the outer side of each flame retardant coating 8, meanwhile, each wire core 1 is arranged to be three, each three wire core 1 is arranged in an annular mode, an inner sheath 2 is fixedly arranged on the outer surface of each three wire core 1, an outer wrapping tape 3 is fixedly arranged on the outer surface of each inner sheath 2, an outer sheath 4 is fixedly arranged on the outer surface of each wrapping tape 3, each inner sheath 2 and each outer sheath 4 are respectively arranged to be flame-retardant polyvinyl chloride sheaths, the flame-retardant cable has good flame-retardant effect, the flame-retardant performance of the whole cable can be improved, meanwhile, the structure flexibility is good, the flexibility is easy to prolong, the practicability is high, the flame-retardant tapes are arranged to be low in halogen-free mode around the wrapping tapes 3, the flame-retardant effect is.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (6)

1. A high-practicability fireproof cable comprises a wire core (1), wherein a fireproof layer (8) is wound on the outer surface of the wire core (1), an insulating layer (9) is fixedly arranged on the outer side of the fireproof layer (8), the number of the wire cores (1) is three, the three wire cores (1) are annularly arranged and are three, an inner sheath (2) is fixedly arranged on the outer surface of the wire core (1), a winding tape (3) is fixedly arranged on the outer surface of the inner sheath (2), an outer sheath (4) is fixedly arranged on the outer surface of the winding tape (3), the high-practicability fireproof cable is characterized in that the wire cores (1) are arranged to be oxygen-free pure copper compact conductors or single solid copper conductors, the insulating layer (9) is arranged to be a crosslinked polyvinyl chloride insulating layer, the fireproof layer (8) is a fireproof mica tape, the thickness is set to be 0.11 +/-0.02 mm, and filling parts (7) are arranged between the outer part of the wire cores (, and the filling part (7) is provided as a polypropylene mesh tape.

2. The high utility fire-resistant cable of claim 1, wherein: the inner sheath (2) and the outer sheath (4) are both made of flame-retardant polyvinyl chloride sheaths, and the thickness of the flame-retardant polyvinyl chloride sheaths is 0.41-0.58 mm.

3. The high utility fire-resistant cable of claim 1, wherein: the wrapping tape (3) is a low halogen-free flame-retardant tape, and the thickness of the wrapping tape is 0.32-0.45 mm.

4. The high utility fire-resistant cable of claim 1, wherein: the lateral wall equidistance of oversheath (4) distributes and is equipped with a plurality of ribs protruding (5), and the cross section semicircular in shape of a plurality of ribs protruding (5).

5. The high utility fire-resistant cable of claim 1, wherein: the end part of the outer sheath (4) is fixedly provided with an end sleeve (6), and the inner side wall of the end sleeve (6) is provided with a plurality of caulking grooves (10) which are matched with the structures of the rib protrusions (5).

6. The high utility fire-resistant cable of claim 5, wherein: the end sleeve (6) is of a copper strip longitudinally wrapped welding embossing structure.

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