CN211427884U

CN211427884U - Embossing metal sheath mineral insulation fireproof cable

Info

Publication number: CN211427884U
Application number: CN201922365065.7U
Authority: CN
Inventors: 邢风华; 邢国辉; 邢宁辉; 乔硕; 刘存凯; 张义勇
Original assignee: Zhuhai Wire And Cable Co ltd
Current assignee: Zhuhai Wire And Cable Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-09-04
Anticipated expiration: 2029-12-25

Abstract

The embodiment of the utility model discloses embossing metal sheath mineral insulation fireproof cable, including the transposition copper conductor, the quantity of transposition copper conductor is one or more, every the outside parcel inorganic insulating material of transposition copper conductor, all inorganic insulating material's outside parcel has the copper sheath, the inside of copper sheath is provided with the inorganic fiber filler, the embodiment of the utility model discloses through adopting at all inorganic insulating material's outside parcel copper sheath, accessible copper sheath realizes the inside protection of cable, on the one hand, can play better fire behaviour, and on the other hand also can prevent that the cable is damaged.

Description

Embossing metal sheath mineral insulation fireproof cable

Technical Field

The embodiment of the utility model provides a relate to cable technical field, concretely relates to embossing metal sheath mineral insulation fireproof cable.

Background

Mineral insulation fireproof cable among the prior art adopts the protective sheath to protect on the surface, and its flame retardant efficiency is relatively poor, and easy damage.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides an embossing metal sheath mineral insulation fireproof cable to solve among the prior art mineral insulation fireproof cable's the relatively poor and easy damaged problem of flame retardant efficiency.

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

according to the embodiment of the utility model provides an embossing metal sheath mineral insulation fireproof cable, including the transposition copper conductor, the quantity of transposition copper conductor is one or more, every inorganic insulating material is wrapped up in the outside of transposition copper conductor, all inorganic insulating material's outside parcel has the copper sheath, the inside of copper sheath is provided with the inorganic fiber filler.

Furthermore, the outer side of the copper sheath is provided with a protective sleeve, and the number of layers of the protective sleeve is two or more than two.

Further, the stranded copper conductors include a first stranded copper conductor and a second stranded copper conductor, wherein the second stranded copper conductor is disposed between the first stranded copper conductors.

Further, the diameter of the second stranded copper conductor is smaller than the diameter of the first stranded copper conductor.

Further, the diameter of the second stranded copper conductor is 0.3-0.4 times the diameter of the first stranded copper conductor.

Further, the protective sheath is low smoke and zero halogen protective sheath.

Further, steel belt aluminum armor is arranged between the protective sleeves.

Further, the number of the first twisted copper conductors is plural.

Further, still include the isolation layer, the isolation layer sets up in copper sheath with between the protective sheath.

The embodiment of the utility model provides a have following advantage:

the embodiment of the utility model provides a through wrapping up the copper sheath in all inorganic insulating material's the outside, accessible copper sheath realizes the inside protection of cable, on the one hand, can play better fire behaviour, and on the other hand also can prevent that the cable is damaged.

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 schematic diagram illustrating the construction of an embossed metal-sheathed mineral-insulated fireproof cable according to an exemplary embodiment;

in the figure: 10. stranding a copper conductor; 11. a first twisted copper conductor; 12. a second stranded copper conductor; 20. an inorganic insulating material; 30. an inorganic fiber filler; 40. a copper sheath; 50. an isolation layer; 60. and (6) a protective sleeve.

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.

According to the embodiment of the utility model provides a line metal sheath mineral insulation fireproof cable, as shown in fig. 1, including stranded copper conductor 10, the quantity of stranded copper conductor 10 is one or more, every inorganic insulating material 20, all is wrapped up in the outside of stranded copper conductor 10 the outside parcel of inorganic insulating material 20 has copper sheath 40, the inside of copper sheath 40 is provided with inorganic fiber filler 30.

Through wrapping up copper sheathing 40 in the outside of all inorganic insulating material 20, accessible copper sheathing 40 realizes the inside protection to the cable, on the one hand, can play better fire behaviour, and on the other hand, also can prevent the cable damage.

In some optional embodiments, the protective sleeve 60 is disposed on the outer side of the copper sheath 40, and the number of the protective sleeve 60 is two or more.

The number of layers of the protective sleeve 60 is two or more than two, so that on one hand, a good protective effect can be achieved, and on the other hand, a flame retardant effect can be achieved.

In some optional embodiments, the stranded copper conductor 10 comprises a first stranded copper conductor 11 and a second stranded copper conductor 12, wherein the second stranded copper conductor 12 is disposed between the first stranded copper conductors 11, the diameter of the second stranded copper conductor 12 is smaller than the diameter of the first stranded copper conductor 11, and the diameter of the second stranded copper conductor 12 is 0.3-0.4 times the diameter of the first stranded copper conductor 11.

By arranging the stranded copper conductors 10 in two and the diameter of the second stranded copper conductor 12 is 0.3-0.4 times the diameter of the first stranded copper conductor 11, the gap between the first stranded copper conductors 11 can be fully utilized, so that the current-carrying capacity of the cable is enhanced.

In some alternative embodiments, the protective sheath 60 is a low smoke zero halogen protective sheath or a PVC protective sheath. By adopting the low-smoke halogen-free protective sleeve or the PVC protective sleeve, the flame retardant property of the cable can be enhanced.

In alternative embodiments, steel tape aluminum armor is disposed between the protective sleeves 60.

By placing steel tape aluminum armor between the two protective jacketing 60, the flame retardant performance of the cable can be further enhanced.

In some alternative embodiments, the number of the first twisted copper conductors 11 is multiple, the number of the first twisted copper conductors 11 in fig. 1 is 4, and the second twisted copper conductors 12 are disposed at the gaps formed between the multiple first twisted copper conductors 11.

In some alternative embodiments, an isolation layer 50 is further included, the isolation layer 50 being disposed between the copper sheath 40 and the protective sheath 60. By providing the isolation layer 50, the conductors inside the cable can be protected.

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

1. The mineral insulation fireproof cable with the embossed metal sheath is characterized by comprising one or more stranded copper conductors, wherein the outer side of each stranded copper conductor is wrapped with an inorganic insulating material, the outer sides of all the inorganic insulating materials are wrapped with copper sheaths, and inorganic fiber fillers are arranged in the copper sheaths;

the outer side of the copper sheath is provided with a protective sleeve, and the number of the protective sleeve layers is two or more than two; the stranded copper conductors include a first stranded copper conductor and a second stranded copper conductor, wherein the second stranded copper conductor is disposed between the first stranded copper conductors.

2. The embossed metal-sheathed mineral-insulated fireproof cable according to claim 1, wherein the diameter of the second stranded copper conductor is smaller than the diameter of the first stranded copper conductor.

3. The embossed metal-sheathed mineral-insulated fireproof cable according to claim 2, wherein the diameter of the second stranded copper conductor is 0.3 to 0.4 times the diameter of the first stranded copper conductor.

4. The embossed metal-sheathed mineral-insulated fireproof cable according to claim 1, wherein the protective sheath is a low smoke zero halogen protective sheath.

5. The embossed metal-sheathed mineral-insulated fireproof cable of claim 1, wherein steel-tape aluminum armor is provided between the protective sheaths.

6. The embossed metal-sheathed mineral-insulated fireproof cable according to claim 1, wherein the number of the first twisted copper conductors is plural.

7. The embossed metal-sheathed mineral-insulated fireproof cable of claim 1, further comprising an insulating layer disposed between the copper sheath and the protective sheath.