CN210925533U

CN210925533U - Inorganic mineral insulated flexible fireproof cable

Info

Publication number: CN210925533U
Application number: CN201922213460.3U
Authority: CN
Inventors: 王先锋
Original assignee: Xi'an Hualian Electrical Cable Co ltd
Current assignee: Xi'an Hualian Electrical Cable Co ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-07-03
Anticipated expiration: 2029-12-11

Abstract

The embodiment of the application discloses flexible fireproof cable of inorganic mineral insulation, including the outer jacket, the inside of outer jacket is provided with at a distance from the fire layer, the separation sleeve has been cup jointed to the inside on fire layer, the fixed cover in inside of separation sleeve has connect the conductor, the outside of conductor is equipped with the insulating layer. This flexible fireproof cable of inorganic mineral insulation, through the guard action of separation sleeve and insulating layer to the conductor, the fire prevention high temperature resistance performance of conductor has been improved, the outer jacket, separate the plasticity of fire layer, separation sleeve and insulating layer, play protective action such as anticorrosive waterproof isolation to the conductor under the bending property's that does not reduce the conductor prerequisite, the security performance of this cable has been improved, and the bending strength of this cable is little, the bend radius of cable has been increased, its convenience of laying installation has been improved.

Description

Inorganic mineral insulated flexible fireproof cable

Technical Field

The application relates to the technical field of electric cables, in particular to an inorganic mineral insulated flexible fireproof cable.

Background

At present, fireproof cables used in the market have two types of rigidity and flexibility, the two types of cables both use magnesium oxide as insulation, and the rigid fireproof cables are formed by wrapping copper pipes outside the rigid fireproof cables and then tightly pressing the copper pipes through a plurality of drawing procedures; the flexible fireproof cable is rolled into a spiral shape outside the rigid cable copper pipe. The rigid fireproof cable is a first-generation product, and the flexible fireproof cable is a second-generation product. The two cables are applied to the market for many years, but with the development of times and technological progress, the cable in the prior art cannot meet the requirement of the development of the modernization process, such as the multi-core long-length cables in places such as skyscrapers, tunnels, airports and the like are increasingly required, the fire resistance time of the cables is required to be long, and the cables cannot meet the modern requirement by the original old process for production.

The technique of product has the cable texture to cause the installation inconvenient firmly among the prior art, brings very big difficulty to the construction, in addition because the insulating layer in the cable that tradition got is sticis by magnesium oxide and forms, arouses the internal insulation fracture easily during the bending, consequently causes cable bend radius little, the difficult problem of laying, traditional outer copper product parcel is done in the sheath with the copper product, greatly increased the cable dead weight and cost, increased the cost of transportation simultaneously.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present application proposes an inorganic mineral insulated flexible fireproof cable to improve the above problems.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides an inorganic mineral insulation flexible fireproof cable, includes the outer jacket, the inside of outer jacket is provided with the fire layer that separates, the separation sleeve has been cup jointed to the inside on fire layer that separates, the fixed conductor that has cup jointed in inside of separation sleeve, the outside of conductor is equipped with the insulating layer.

Optionally, the conductor is made of copper, and the conductor is formed by twisting copper wires.

Optionally, the isolation sleeve is made of a cross-linked polyethylene material.

Optionally, the fire-proof layer is Mg (OH)₂Or Al (OH)₃The fire insulation layer is made of mineral materials, and wires consisting of isolation sleeves, insulation layers and conductors are sleeved inside the fire insulation layer.

Optionally, the outer jacket is made of a low-smoke halogen-free polyolefin material.

Optionally, the insulating layer is made by lapping compound mica tapes in an overlapping manner, the minimum number of layers wound by the compound mica tapes is six, the insulating layer covers the outer surface of the conductor, and the insulating layer is located inside the isolating sleeve.

The application provides a pair of inorganic mineral insulation flexible fireproof cable possesses following beneficial effect:

1. this flexible fireproof cable of inorganic mineral insulation, through the guard action of separation sleeve and insulating layer to the conductor, the fire prevention high temperature resistance performance of conductor has been improved, the outer jacket, separate the plasticity of fire layer, separation sleeve and insulating layer, play protective action such as anticorrosive waterproof isolation to the conductor under the bending property's that does not reduce the conductor prerequisite, the security performance of this cable has been improved, and the bending strength of this cable is little, the bend radius of cable has been increased, its convenience of laying installation has been improved.

2. This flexible fireproof cable of inorganic mineral insulation, make the outer jacket through using low smoke and zero halogen polyolefin material, be used for playing the guard action to this cable, this material has good anticorrosion characteristic, and because its low smoke performance, in production and use, especially when the conflagration breaing out its burning can not produce poisonous and harmful gas, the environmental protection security performance that has improved this cable has abandoned the mode that the tradition used the metal as the protective sheath, the production and the use cost of cable have been reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 shows a schematic structural diagram of an inorganic mineral insulated flexible fireproof cable according to an embodiment of the present application;

fig. 2 shows a top view of an inorganic mineral insulated flexible fireproof cable according to an embodiment of the present application.

In the figure: 1. an outer jacket; 2. a fire barrier layer; 3. an isolation sleeve; 4. an insulating layer; 5. a conductor.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1 to 2, the present invention provides a technical solution: the utility model provides an inorganic mineral insulating flexible fireproof cable, includes outer jacket 1, and outer jacket 1 adopts low smoke and zero halogen polyolefin material to make, and outer jacket 1 can not produce poisonous and harmful gas in production and use, is the friendly type product of the fire-retardant environment of zero halogen low smoke, has improved the feature of environmental protection of this cable, and outer jacket 1's inside is provided with separates fire layer 2, separates fire layer 2 and is Mg (OH)₂Or Al (OH)₃Mineral material, it has high temperature resistant to separate fire layer 2, the performance of fire prevention, effective protection separates 2 inside spacer sleeves 3 of fire layer, insulating layer 4 and conductor 5's security performance, separate fire layer 2's inside cup jointed by spacer sleeve 3, the wire rod that insulating layer 4 and conductor 5 are constituteed, separate fire layer 2's inside cup jointed spacer sleeve 3, spacer sleeve 3's material is crosslinked polyethylene material, spacer sleeve 3 has better water-proof effects, avoid spacer sleeve 3 to be located moisture erosion in the overcast tide environment for a long time, cause the condition of cable damage, spacer sleeve 3's inside fixed conductor 5 that has cup jointed, conductor 5's material is copper, conductor 5Form by the copper line transposition, the copper line quantity of 5 transposition of conductor specifically is decided according to the actual production operation requirement, conductor 5 has good bending characteristic, be favorable to laying of cable, conductor 5's outside is equipped with insulating layer 4, insulating layer 4 uses compound mica tape to overlap around the package preparation, compound mica tape has better insulating properties, the number of piles minimum of compound mica tape coiling is six layers, the multilayer coiling has improved the insulating properties of this insulating layer 4, insulating layer 4 covers conductor 5's surface, insulating layer 4 is located the inside of isolation sleeve 3.

In conclusion, when the inorganic mineral insulated flexible fireproof cable provided by the application is used, firstly, a plurality of strands of copper wires are twisted and wound to form a conductor 5, an insulating layer 4 is sleeved outside the conductor 5, then an isolating sleeve 3 is wrapped outside the insulating layer 4, secondly, a plurality of wires consisting of the isolating sleeve 3, the insulating layer 4 and the conductor 5 are sleeved inside a fire insulation layer 2 after being arranged, and finally, an outer protective layer 1 is sleeved outside the fire insulation layer 2.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. The utility model provides a flexible fireproof cable of inorganic mineral insulation, includes outer jacket (1), its characterized in that: the utility model discloses a fire protection shield, including outer jacket (1), the inside of outer jacket (1) is provided with separates fire layer (2), separate the inside on fire layer (2) and cup jointed isolation sleeve (3), the fixed cover in inside of isolation sleeve (3) has connect conductor (5), the outside of conductor (5) is equipped with insulating layer (4).

2. The inorganic mineral insulated flexible fireproof cable of claim 1, wherein: the conductor (5) is made of copper, and the conductor (5) is formed by twisting copper wires.

3. The inorganic mineral insulated flexible fireproof cable of claim 1, wherein: the isolation sleeve (3) is made of a cross-linked polyethylene material.

4. The inorganic mineral insulated flexible fireproof cable of claim 1, wherein: the fire-insulating layer (2) is Mg (OH)₂Or Al (OH)₃The fire insulation layer (2) is internally sleeved with a wire consisting of an isolation sleeve (3), an insulation layer (4) and a conductor (5).

5. The inorganic mineral insulated flexible fireproof cable of claim 1, wherein: the outer protective layer (1) is made of low-smoke halogen-free polyolefin materials.

6. The inorganic mineral insulated flexible fireproof cable of claim 1, wherein: insulating layer (4) use compound mica tape to overlap around the package preparation, the number of piles minimum value of compound mica tape coiling is six layers, the surface of insulating layer (4) cover conductor (5), insulating layer (4) are located the inside of isolation sleeve (3).