CN212113254U

CN212113254U - Long-life fire-resistant cable that contracts that blocks water

Info

Publication number: CN212113254U
Application number: CN202020964022.0U
Authority: CN
Inventors: 唐波; 田亚飞; 程洪建; 杨子仪; 曹昕; 郭秋霞; 刘少新
Original assignee: Guangdong Zhongbao Cable Co ltd
Current assignee: Guangdong Zhongbao Cable Co ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2020-12-08
Anticipated expiration: 2030-05-29

Abstract

The utility model discloses a fire-resistant tightening cable of long-life block water, it includes a plurality of cable cores, the cable core includes the conductor that is formed by many dysmorphism monofilaments sticising the transposition, wraps the flame retardant coating outside the conductor and wraps the fire-resistant insulation layer outside the flame retardant coating, the fire-resistant insulation layer includes inner insulation layer and outer insulating layer, inner insulation layer adopts cross-linked polyethylene insulating material to extrude the package in the surface of flame retardant coating, outer insulating layer adopts cross-linked polyolefin insulating material to extrude the package in the surface of inner insulation layer; filling bodies are filled among gaps of the cable cores; the cable core is coated with a belting layer, a water-blocking belting layer and an outer sheath layer in sequence. High life fire-resistant tightening cable that blocks water, its compact structure possesses excellent fire-resistant, the performance of blocking water to the cost is lower.

Description

Long-life fire-resistant cable that contracts that blocks water

Technical Field

The utility model relates to the technical field of cables, concretely relates to high life blocks water fire-resistant cable that contracts.

Background

The cable is an important carrier for transmitting and distributing electric energy in the power line, and the improvement of the safety performance of the power line is an important direction for the development of cable technology and products. Particularly, with the rapid development of economy, public building structures are increasingly complex, civil buildings are increasingly high-rise, the performance of the cable in fire has important influence on the life and property safety of people, the design service life of the residential structure is not less than 50 years, but the service life of the general cable is not more than 30 years due to the limitation of high polymer materials such as insulation, sheaths and the like, and the maintenance and replacement cost is high, so that the development of the long-life water-blocking fire-resistant compact cable is particularly necessary.

SUMMERY OF THE UTILITY MODEL

To the problem, the utility model aims to provide a high life blocks water fire-resistant contraction cable, its compact structure possesses excellent fire-resistant, the performance of blocking water to the cost is lower.

In order to achieve the purpose, the utility model provides a fire-resistant tightening cable that blocks water of high life, it includes a plurality of cable cores, the cable core includes the conductor that is formed by many dysmorphism monofilaments sticising the transposition, winds the flame retardant coating outside the conductor and winds the flame retardant insulation layer outside the flame retardant coating, the flame retardant insulation layer includes inner insulation layer and outer insulation layer, inner insulation layer adopts crosslinked polyethylene insulating material to extrude the package in the surface of flame retardant coating, outer insulation layer adopts crosslinked polyolefin insulating material to extrude the package in the surface of inner insulation layer; filling bodies are filled among gaps of the cable cores; the cable core is coated with a belting layer, a water-blocking belting layer and an outer sheath layer in sequence.

Further, the fire-resistant layer is formed by overlapping and wrapping a plurality of layers of double-faced mica tapes.

Furthermore, the filling body is filled in gaps of the cable core by adopting extruded ceramic mud.

Furthermore, the wrapping tape layer is formed by wrapping a halogen-free low-smoke flame-retardant wrapping tape.

Furthermore, the water-blocking layer is formed by longitudinally wrapping an aluminum-plastic composite tape.

Furthermore, the water-blocking belting layer is formed by lapping and overlapping water-blocking tapes.

Furthermore, the outer sheath layer is made of flame-retardant polyethylene sheath materials and is extruded outside the water-blocking belting layer.

The utility model provides a fire-resistant cable that contracts that blocks water of high life compares in prior art, has following technological effect:

the conductor of the cable core is formed by tightly pressing and twisting a plurality of special-shaped monofilaments, so that the outer diameter of the conductor can be effectively reduced, the outer diameter of the cable is reduced, materials of all layers of the cable are saved, and the manufacturing cost of the cable is reduced; meanwhile, the fire-resistant insulating layer is designed to be of an inner-outer combined structure, and the inner insulating layer is made of a cross-linked polyethylene insulating material and is wrapped on the outer surface of the fire-resistant layer in an extruding mode, so that the cable is ensured to have a good electrical insulating function; the outer insulating layer is extruded and coated on the outer surface of the inner insulating layer by adopting a cross-linked polyolefin insulating material, so that the cable is ensured to have good flame retardant, wear-resistant and anti-cracking properties, and the service life of the cable is prolonged; in addition, the gaps of the cable cores are filled with filling bodies through design; the outside cladding of cable core has multinomial structures such as band layer, water-blocking layer, the band layer that blocks water and oversheath layer in proper order, both can play excellent radial moisture-proof effect that blocks water, can also prevent the electric field that the cable body produced to outside electromagnetic signal's interference, this cable has performance collection in the advantage characteristics of an organic whole such as high life, fire-resistant, block water, contract.

Drawings

Fig. 1 is a schematic structural view of a long-life water-blocking fire-resistant compact cable according to an embodiment of the present invention.

The cable comprises a cable core 1, a cable core 11, a conductor 12, a fire-resistant layer 13, a fire-resistant insulating layer 131, an inner insulating layer 132, an outer insulating layer 2, a filling body 3, a belting layer 4, a water-blocking layer 5, a water-blocking belting layer 6 and an outer sheath layer.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

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 efforts belong to the protection scope of the present invention.

As shown in fig. 1, the embodiment of the utility model provides a fire-resistant tightening cable that blocks water of high life, it includes a plurality of cable cores 1, cable core 1 includes conductor 11 that is formed by many special-shaped monofilaments sticising the transposition, around the flame retardant coating 12 outside conductor 11 and around the flame retardant coating 13 outside flame retardant coating 12, flame retardant coating 13 includes inner insulation layer 131 and outer insulation layer 132, inner insulation layer 131 adopts cross-linked polyethylene insulating material to extrude the package in the surface of flame retardant coating 12, outer insulation layer 132 adopts cross-linked polyolefin insulating material to extrude the package in the surface of inner insulation layer 131; the gaps of the cable cores 1 are filled with filling bodies 2; the outer part of the cable core 1 is sequentially coated with a belting layer 3, a water-blocking layer 4, a water-blocking belting layer 53 and an outer sheath layer 6;

the conductor 11 of the cable core 1 is formed by pressing and twisting a plurality of special-shaped monofilaments, so that the outer diameter of the conductor 11 can be effectively reduced, the outer diameter of the cable is reduced, materials of all layers of the cable are saved, and the manufacturing cost of the cable is reduced; meanwhile, the fire-resistant insulating layer 13 is designed to adopt an inner-outer combined structure, and the inner insulating layer 131 is extruded and coated on the outer surface of the fire-resistant layer 12 by adopting a cross-linked polyethylene insulating material, so that the cable is ensured to have a good electrical insulating function; the outer insulating layer 132 is extruded and coated on the outer surface of the inner insulating layer 131 by adopting a cross-linked polyolefin insulating material, so that the cable is ensured to have good flame retardant, wear-resistant and anti-cracking properties, and meanwhile, the service life of the cable is prolonged; in addition, the gaps of the cable cores 1 are filled with filling bodies 2 by design; the outside of cable core 1 cladding has multinomial structures such as band layer 3, water blocking layer 4, water blocking band layer 53 and oversheath layer 6 in proper order, both can play excellent radial moisture-proof effect that blocks water, can also prevent the interference of the electric field that the cable body produced to outside electromagnetic signal, and this cable has performance collection in the advantage characteristics of an organic whole such as high life, fire-resistant, block water, contract.

In the embodiment of the present invention, the number of the cable cores 1 is 5.

Further, the fire-resistant layer 12 is formed by overlapping and wrapping a plurality of layers of double-sided mica tapes, and the overlapping rate is not less than 30%, so that the cable has a good fire-resistant function. The thickness of the fire-resistant layer 12 is 0.14mm, and the mica tape is a double-sided synthetic mica tape.

Further, the filling body 2 is filled in the gap of the cable core 1 by adopting extruded ceramic mud.

Further, the wrapping tape layer 3 is formed by wrapping a halogen-free low-smoke flame-retardant wrapping tape.

Further, the water-blocking layer 4 is formed by longitudinally lapping an aluminum-plastic composite belt, and the covering rate of the aluminum-plastic composite belt is not less than 25%.

Further, the water blocking belting layer 53 is formed by lapping and overlapping water blocking tapes, and the covering rate of the water blocking tapes is not lower than 30%.

Further, the outer sheath layer 6 is made of flame-retardant polyethylene sheath material and is extruded outside the water-blocking wrapping tape layer 53. By design, the outer sheath layer 6 is formed by extruding and wrapping flame-retardant polyethylene sheath materials, has good flame-retardant performance, and can ensure that the cable has certain mechanical damage resistance and flame-retardant performance.

To sum up, the long-life water-blocking fire-resistant tightening cable of the utility model is formed by tightly pressing and twisting a plurality of special-shaped monofilaments through designing the conductor 11 of the cable core 1, so that the outer diameter of the conductor 11 can be effectively reduced, the outer diameter of the cable is reduced, materials of each layer of the cable are saved, and the manufacturing cost of the cable is reduced; meanwhile, the fire-resistant insulating layer 13 is designed to adopt an inner-outer combined structure, and the inner insulating layer 131 is extruded and coated on the outer surface of the fire-resistant layer 12 by adopting a cross-linked polyethylene insulating material, so that the cable is ensured to have a good electrical insulating function; the outer insulating layer 132 is extruded and coated on the outer surface of the inner insulating layer 131 by adopting a cross-linked polyolefin insulating material, so that the cable is ensured to have good flame retardant, wear-resistant and anti-cracking properties, and meanwhile, the service life of the cable is prolonged; in addition, the gaps of the cable cores 1 are filled with filling bodies 2 by design; the outside of cable core 1 cladding has multinomial structures such as band layer 3, water blocking layer 4, water blocking band layer 53 and oversheath layer 6 in proper order, both can play excellent radial moisture-proof effect that blocks water, can also prevent the interference of the electric field that the cable body produced to outside electromagnetic signal, and this cable has performance collection in the advantage characteristics of an organic whole such as high life, fire-resistant, block water, contract.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a fire-resistant tightening cable that blocks water of high life which characterized in that includes a plurality of cable cores, the cable core includes by many dysmorphism monofilament sticiss the conductor that the transposition formed, around the flame retardant coating outside the conductor and around the flame retardant insulation outside the flame retardant coating, the flame retardant insulation includes inner insulation and outer insulating layer, inner insulation adopts cross-linked polyethylene insulating material to crowd in the surface of flame retardant coating, outer insulating layer adopts cross-linked polyolefin insulating material to crowd in the surface of inner insulating layer; filling bodies are filled among gaps of the cable cores; the cable core is coated with a belting layer, a water-blocking belting layer and an outer sheath layer in sequence.

2. The long-life water-blocking fire-resistant shrink cable of claim 1, wherein the fire-resistant layer is formed by overlapping and wrapping multiple layers of double-sided mica tapes.

3. The long-life water-blocking fire-resistant compression cable of claim 1, wherein the filler is filled in the gaps of the core with an extruded ceramic paste.

4. The long-life water-blocking fire-resistant compact cable of claim 1, wherein the tape layer is wrapped with a halogen-free low-smoke flame-retardant wrapping tape.

5. The long-life fire-resistant compact water-blocking cable of claim 1, wherein the water-blocking layer is longitudinally wrapped with an aluminum-plastic composite tape.

6. The long-life water-blocking fire-resistant compact cable of claim 1, wherein the water-blocking tape layer is formed by lapping and covering water-blocking tapes.

7. The long-life water-blocking fire-resistant compact cable of claim 1, wherein said outer jacket layer is made of flame-retardant polyethylene jacket material extruded on the outside of said water-blocking tape layer.