CN217361201U

CN217361201U - High-temperature-resistant composite multi-core cable

Info

Publication number: CN217361201U
Application number: CN202220836676.4U
Authority: CN
Inventors: 常雷; 范振国
Original assignee: Hubei Power Cuiyu Cable Co ltd
Current assignee: Hubei Power Cuiyu Cable Co ltd
Priority date: 2022-04-12
Filing date: 2022-04-12
Publication date: 2022-09-02
Anticipated expiration: 2032-04-12

Abstract

The utility model discloses a high temperature resistant compound multicore cable belongs to information transmission technical field, including copper electricity core and set up in the cable protection cover of copper electricity core ring side, the quantity of copper electricity core and cable protection cover is six groups and is the setting of annular equidistance each other, multiunit the ring side cover of copper electricity core and cable protection cover is equipped with insulating protective sheath, insulating protective sheath is hexagon structure and outer loop side angle department is provided with the fillet, the outside cover of insulating protective sheath is equipped with the shrink layer, the outer loop side cover of shrink layer is equipped with the protective sheath, be provided with the filling layer between protective sheath and the shrink layer; the utility model can effectively protect the outside of the cable, and can effectively avoid the cable from being damaged when the cable is burnt by flame, thereby effectively protecting the copper core inside; meanwhile, the direct influence of external high temperature on the internal structure can be avoided, so that the high temperature resistance is further improved.

Description

High-temperature-resistant composite multi-core cable

Technical Field

The utility model relates to an information transmission technical field especially relates to a compound multicore cable of high temperature resistant.

Background

Typically a rope-like cable made up of several or groups of conductors (at least two in each group) twisted together, with the conductors of each group being insulated from one another and often twisted around a center, the entire outer surface being coated with a highly insulating coating. The cable has the characteristics of internal electrification and external insulation. The cable includes power cable, control cable, compensation cable, shielding cable, high-temperature cable, computer cable, signal cable, coaxial cable, fire-resistant cable, marine cable, mining cable, aluminum alloy cable and the like. They are composed of single or multi-strand wires and insulating layers, and are used for connecting circuits, electric appliances and the like.

When the existing high-temperature-resistant cable is actually used, the high-temperature-resistant performance of the existing high-temperature-resistant cable mainly depends on a high-temperature-resistant sheath, the main preparation components of the high-temperature-resistant sheath are chlorinated polyethylene, carbon black, kaolin and corresponding industrial reagents, and the high-temperature-resistant sheath prepared from the components has poor fireproof performance and unsatisfactory high-temperature-resistant performance.

Therefore, a high-temperature resistant composite multi-core cable is proposed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high temperature resistant compound multicore cable has solved the poor and unsatisfactory problem of high temperature resistance of high temperature resistant cable fire behavior among the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a high temperature resistant compound multicore cable, includes copper electricity core and sets up in the cable protection cover of copper electricity core ring side, the quantity of copper electricity core and cable protection cover is six groups and is the setting of annular equidistance each other, the multiunit the ring side cover of copper electricity core and cable protection cover is equipped with insulating protective sheath, insulating protective sheath is provided with the fillet for hexagon structure and outer loop side angle department, insulating protective sheath's outside cover is equipped with the shrink layer, the outer loop side cover on shrink layer is equipped with interior protective sheath, be provided with the fire prevention filling layer between interior protective sheath and the shrink layer, the fire prevention filling layer adopts dacron silk and sodium bicarbonate powder to mix and forms.

As an optimized proposal of the utility model, the cable protection sleeve adopts the polyvinyl chloride material, the insulating protective sleeve is formed by mica and asbestos fiber in a composite way.

As a preferred scheme of the utility model, the inner protective sleeve adopts fluoroplastic materials, and the thickness of the inner protective sleeve is 2-4 mm.

As a preferred scheme of the utility model, the outside cover of interior protective sheath is equipped with the internal shield layer, the internal shield layer adopts inorganic mica tape.

As a preferred scheme of the utility model, the outside cover on internal shield layer is equipped with outer insulating layer, outer insulating layer adopts the thermal-insulated silica gel material that thickness is 2-3 millimeters.

As an optimized proposal of the utility model, the outside cover of the outer heat insulation layer is provided with a framework layer, and the framework layer is formed by winding a plurality of steel wires with the diameter of 2-4 mm.

As an optimized scheme of the utility model, the outside cover of casing ply is equipped with the alumina filling layer, the outside cover of alumina filling layer is equipped with outer protective layer, outer protective layer adopts fire-resistant silicon rubber material.

The utility model discloses in:

according to the high-temperature-resistant composite multi-core cable, the outer protection layer and the alumina filling layer are arranged, so that the outer part of the cable can be effectively protected when the cable is used, and the cable can be effectively prevented from being damaged when the cable is burnt by flame, so that the inner copper core is effectively protected; the inner part of the cable can be protected by arranging the outer heat insulation layer, so that the direct influence of external high temperature on the inner structure is avoided, and the high temperature resistance is further improved; the inner shielding layer is arranged, so that the interior of the cable can be further protected; by arranging the inner protective sleeve and the insulating protective sleeve of the fluoroplastic and filling the polyester filaments and the sodium bicarbonate, when the fire is scorched from the outside, the fire can be extinguished through water and carbon dioxide decomposed by the sodium bicarbonate, and meanwhile, the temperature is reduced through the evaporation of the water, so that the fire-resistant and high-temperature-resistant performance is further improved; can cushion the volume expansion that decomposed sodium bicarbonate and the vapor that is heated and evaporates produced through setting up the shrink layer, protect inner structure.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. a copper cell; 2. a cable protective sheath; 3. an insulating protective sleeve; 4. a shrink layer; 5. an inner protective sleeve; 6. a fire-resistant filler layer; 7. an inner shield layer; 8. an outer insulating layer; 9. a framework layer; 10. an alumina fill layer; 11. and an outer protective layer.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Examples

Referring to fig. 1, the utility model provides a high temperature resistant composite multi-core cable, which comprises a copper cell 1 and a cable protection sleeve 2 arranged at the ring side of the copper cell 1, wherein the number of the copper cell 1 and the cable protection sleeve 2 is six groups and are arranged in an annular equidistant manner, the ring sides of the groups of the copper cell 1 and the cable protection sleeve 2 are sleeved with an insulating protection sleeve 3, the insulating protection sleeve 3 is in a hexagonal structure, the angle of the side edge of the outer ring is provided with a fillet, the outside of the insulating protection sleeve 3 is sleeved with a shrinkage layer 4, the outer ring side of the shrinkage layer 4 is sleeved with an inner protection sleeve 5, a fireproof filling layer 6 is arranged between the inner protection sleeve 5 and the shrinkage layer 4, the fireproof filling layer 6 is formed by mixing a polyester filament and sodium bicarbonate powder, the inner protection sleeve 5 and the insulating protection sleeve 3 which are provided with fluoroplastics and filled with the polyester filament and sodium bicarbonate powder, the water and the carbon dioxide that accessible sodium bicarbonate decomposed put out a fire, and the evaporation through water simultaneously cools down, further improves fire-resistant high temperature resistance.

Cable protection sleeve 2 adopts the polyvinyl chloride material, and insulating protective sheath 3 is that mica and asbestos fiber are compound to be formed, and interior protective sheath 5 adopts the fluoroplastics material, and the thickness of interior protective sheath 5 is 2-4 millimeters.

An inner shielding layer 7 is sleeved outside the inner protective sleeve 5, the inner shielding layer 7 is made of inorganic mica tapes, and the inner part of the cable can be further protected by arranging the inner shielding layer 7; the outer portion of the inner shielding layer 7 is sleeved with an outer heat insulation layer 8, and the outer heat insulation layer 8 is made of heat insulation silica gel with the thickness of 2-3 mm.

The outer portion of the outer heat insulation layer 8 is sleeved with a framework layer 9, the framework layer 9 is formed by winding a plurality of steel wires with the diameter of 2-4 mm, and the cables are supported and fixed through the framework layer 9.

The outside cover of casing ply 9 is equipped with alumina filling layer 10, and the outside cover of alumina filling layer 10 is equipped with outer protective layer 11, and outer protective layer 11 adopts fire-resistant silicon rubber material, when using, can effectively protect the outside of cable, when receiving the flame firing, can effectively avoid the cable to damage to carry out effectual protection to inside copper core.

The working principle is as follows: by arranging the outer protection layer 11 and the alumina filling layer 10, the outer part of the cable can be effectively protected when the cable is used, and the cable can be effectively prevented from being damaged when the cable is burnt by flame, so that the inner copper core is effectively protected; the inner part of the cable can be protected by arranging the outer heat insulation layer 8, so that the direct influence of external high temperature on the inner structure is avoided, and the high temperature resistance is further improved; the inner shielding layer 7 is arranged, so that the interior of the cable can be further protected; by arranging the inner protective sleeve 5 and the insulating protective sleeve 3 made of fluoroplastics and filling the polyester filaments and the sodium bicarbonate, when the fire is scorched from the outside, the fire can be extinguished through water and carbon dioxide decomposed by the sodium bicarbonate, and meanwhile, the temperature is reduced through evaporation of the water, so that the fire-resistant and high-temperature-resistant performances are further improved; by providing the shrinkage layer 4, the volume expansion of decomposed sodium bicarbonate and water vapor evaporated by heating can be buffered, and the internal structure can be protected.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, thereby enabling others skilled in the art to best understand the invention and its practical application. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-temperature resistant composite multi-core cable comprises a copper electric core (1) and a cable protective sleeve (2) arranged on the ring side of the copper electric core (1), it is characterized in that the number of the copper electric cores (1) and the cable protective sleeves (2) is six, the copper electric cores and the cable protective sleeves are arranged in an annular equidistant mode, the annular sides of a plurality of groups of the copper electric cores (1) and the cable protective sleeves (2) are sleeved with insulating protective sleeves (3), the insulating protective sleeve (3) is of a hexagonal structure, the corners of the side edge of the outer ring are provided with fillets, a shrinkage layer (4) is sleeved outside the insulating protective sleeve (3), an inner protective sleeve (5) is sleeved on the outer ring side of the shrinkage layer (4), a fireproof filling layer (6) is arranged between the inner protective sleeve (5) and the contraction layer (4), the fireproof filling layer (6) is formed by mixing polyester yarns and sodium bicarbonate powder.

2. The high-temperature-resistant composite multi-core cable as claimed in claim 1, wherein the cable protective sheath (2) is made of polyvinyl chloride.

3. The high-temperature-resistant composite multi-core cable according to claim 1, wherein the inner protective sheath (5) is made of fluoroplastic, and the thickness of the inner protective sheath (5) is 2-4 mm.

4. The high-temperature-resistant composite multi-core cable according to claim 1, wherein the inner protective sleeve (5) is externally sleeved with an inner shielding layer (7), and the inner shielding layer (7) is made of inorganic mica tape.

5. The high-temperature-resistant composite multicore cable of claim 4, wherein the outer shielding layer (7) is externally sleeved with an outer insulating layer (8), and the outer insulating layer (8) is made of a heat-insulating silica gel material with a thickness of 2-3 mm.

6. The high-temperature-resistant composite multi-core cable according to claim 5, wherein a framework layer (9) is sleeved outside the outer heat-insulating layer (8), and the framework layer (9) is formed by winding a plurality of steel wires with the diameter of 2-4 mm.

7. The high-temperature-resistant composite multi-core cable according to claim 6, wherein an alumina filling layer (10) is sleeved outside the framework layer (9), an outer protection layer (11) is sleeved outside the alumina filling layer (10), and the outer protection layer (11) is made of a fire-resistant silicon rubber material.