CN212161361U - Middle cladding flame-retardant low-voltage cable - Google Patents

Abstract

The utility model discloses a fire-retardant low tension cable of well tundishes, including the inside well tundishes inner core of cable main part and cable main part, the shielding layer is installed in the outside of well tundishes inner core, the wrinkle aluminium sheath is installed in the outside of shielding layer, and installs supporting mechanism between wrinkle aluminium sheath and the shielding layer, the outside surface mounting of wrinkle aluminium sheath has the fire-retardant oversheath of steamed low cigarette of nothing, and supporting mechanism includes inoxidizing coating and supporting component, and the inoxidizing coating is installed on the outside surface of shielding layer, and supporting component installs in inoxidizing coating and wrinkle aluminium sheath clearance department. The utility model discloses a be provided with a series of structures for when this fire-retardant low tension cable of intermediate coating can realize flame retardant efficiency, the surface carries out triangle-shaped setting, is applicable to a plurality of installation environment of low tension cable, has functions such as resistance to compression, wear-resisting loss prevention, increase heat radiating area, and improves the radiating efficiency, the actual installation and the use of being convenient for.

Description

Middle cladding flame-retardant low-voltage cable

Technical Field

The utility model relates to a low tension cable technical field specifically is a fire-retardant low tension cable of well intermediate coat.

Background

A cable is a conductor coated with an insulating layer, a protective layer, a shield layer, and the like for transmitting power, signal current, and signal voltage. The low-voltage cable line can be divided into a high-voltage cable and a low-voltage cable according to voltage, and compared with a low-voltage overhead line and a low-voltage overhead insulated line, the low-voltage cable line is difficult to lay and maintain due to higher manufacturing cost, but is widely applied to a low-voltage power distribution system due to the characteristics of reliable operation, no pole standing, no ground occupation, no influence on the sight, less influence from the outside and the like.

In the installation of actual low tension cable, there are multiple actual mounting means, if directly bury ground, lay in the cable pit, lay along the wall, lay in the cable tunnel etc., directly bury ground cable, its self is constantly under the state of being extrudeed by soil, and its whole compressive capacity of general low tension cable is relatively poor, along with burying increase of degree of depth, it flattens or even folds the cable very easily, for protecting the cable, still need to put into the cable inside the protection pipeline and protect during actual construction, construction and use cost have been increased, and general low tension cable, under the circumstances that resistance is invariable, the electric current is great, produce a large amount of heats easily promptly, under the relatively poor circumstances of low tension cable self heat dispersion, the life of cable is shortened very easily.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fire-retardant low tension cable of well cladding to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a fire-retardant low tension cable of well cladding, includes the inside well inner core of package of cable main part and cable main part, the shielding layer is installed in the outside of well package inner core, the wrinkle aluminium sheath is installed in the outside of shielding layer, and installs supporting mechanism between wrinkle aluminium sheath and the shielding layer, the outside surface mounting of wrinkle aluminium sheath has the fire-retardant oversheath of steamed low cigarette of nothing.

Preferably, the supporting mechanism comprises a protective layer and a supporting member, the protective layer is arranged on the outer side surface of the shielding layer, and the supporting member is arranged at the gap between the protective layer and the corrugated aluminum sheath.

Preferably, the support component comprises a support sheet and a support block, the support sheet is mounted on the outer side surface of the protective layer, the support block is mounted at the top end of the support sheet, the top end surface of the support block is an arc-shaped surface, and the support layer is filled around the support sheet.

Preferably, the inner side surface of the corrugated aluminum sheath is provided with a heat transfer layer.

Preferably, the surface of the inner side of the protective layer is provided with a heat conduction ring, the surface of the heat conduction ring is provided with a heat conduction sheet, and the tail end of the heat conduction sheet extends to the surface of the heat transfer layer through the support sheet.

Preferably, the outer surface of the halogen-free low-smoke flame-retardant outer sheath is provided with an outer sheath, and the outer sheath is distributed in a triangular strip shape.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this fire-retardant low tension cable of intermediate lamella, through the outer jacket, wholly be triangle strip mechanism, can be when installing on the wall, reduce area of contact, certain wear effect has indirectly, avoid the direct injury of external component to this cable, and when burying at soil, can be with the help of the great characteristic of triangle surface area, multiplicable area of contact with soil, improve the stability of burying, and when subsequent heat dissipation, multiplicable actual heat radiating area, through supporting mechanism, can form sufficient supporting effect between shielding layer and wrinkle aluminium sheath, under service behavior such as burying, can avoid external pressure to extrude whole cable, cause bad phenomenon such as pressure break to take place, and with the help of there being no steamed low cigarette fire-retardant outer jacket, can be under the condition that meets with the naked light, avoid the intensity of a fire to spread, and then reach fire-retardant cable's effect.

2. This fire-retardant low tension cable of intermediate coat, through the inoxidizing coating, for harder plastic material makes and forms, can form certain supporting effect, the centering package inner core cup joints and wraps up the protection, and pass through the backing sheet, support wrinkle aluminium sheath with the help of the resistance to compression effect of material self, and can tentatively offset the moment when the atress, through strutting the piece, when its surface area is great, can directly increase the area of contact between backing sheet and the wrinkle aluminium sheath, when can be convenient for external force transmission, avoid stress concentration phenomenon to cause the destruction.

3. This fire-retardant low tension cable of well intermediate ladle layer through the heat conduction circle, and inside has the less and good wire component of heat conductivity of density, is in inside the inoxidizing coating, can with shielding layer direct contact, the heat that the package inner core produced in the transmission to use with the conducting strip combines, can carry out directional guide with the heat, carry for the heat transfer layer, and through the outward diffusion of wrinkle aluminium sheath with the heat, reach the purpose that improves the radiating efficiency of cooling.

Drawings

FIG. 1 is a schematic sectional view of the overall structure of the present invention;

fig. 2 is a schematic view of the supporting mechanism of the present invention.

In the figure: 1. an outer jacket; 2. a middle package inner core; 3. a shielding layer; 4. a support layer; 5. a protective layer; 6. a corrugated aluminum sheath; 7. a support sheet; 8. a halogen-free low-smoke flame-retardant outer sheath; 9. a heat transfer layer; 10. a heat conductive sheet; 11. a heat conducting ring; 12. and (5) supporting blocks.

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 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.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" 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," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or 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.

As shown in fig. 1 and fig. 2, the middle-wrapped flame-retardant low-voltage cable in the embodiment includes a cable main body and a middle-wrapped inner core 2 inside the cable main body, a conductor such as a copper core and the like which mainly and directly conveys current is arranged inside the middle-wrapped inner core 2, a shielding layer 3 is arranged outside the middle-wrapped inner core 2, and performs insulation shielding on the current conveyed by the middle-wrapped inner core 2, and has good insulating performance, a corrugated aluminum sheath 6 is arranged outside the shielding layer 3, and is an aluminum foil type component which has good thermal conductivity and can perform actual fireproof and flame-retardant protection effects on the middle-wrapped inner core 2, a supporting mechanism is arranged between the corrugated aluminum sheath 6 and the shielding layer 3, and has certain hardness while supporting and protecting the corrugated aluminum sheath 6, so as to prevent external pressure from excessively extruding the shielding layer 3 downwards, and a halogen-free flame-retardant low-smoke outer sheath 8 is arranged on, the cable is made of halogen-free low-smoke materials, is an external protection component of the whole cable main body, and can avoid fire spreading under the condition of encountering open fire, thereby achieving the effect of flame-retardant cables.

Specifically, the supporting mechanism includes inoxidizing coating 5 and supporting component, and inoxidizing coating 5 is installed on the outside surface of shielding layer 3, for light and the higher plastic material of hardness makes and forms, can cup joint and wrap up the protection to center package inner core 2, and supporting component installs in inoxidizing coating 5 and 6 clearance departments of wrinkle aluminium sheath, supports between inoxidizing coating 5 and the wrinkle aluminium sheath 6 to the transmission pressure effect.

Further, the supporting part comprises supporting sheets 7 and supporting blocks 12, at least four supporting sheets 7 are arranged on the outer side surface of the protective layer 5 and are made of sheet materials with high hardness, the corrugated aluminum sheath 6 can be supported, the supporting blocks 12 are arranged on the top end of the supporting sheets 7, the top end surfaces of the supporting blocks 12 are arc-shaped surfaces, the contact area between the supporting sheets 7 and the corrugated aluminum sheath 6 can be directly increased while the surface area is large, external force transmission can be facilitated, damage caused by stress concentration is avoided, the supporting layers 4 are filled around the supporting sheets 7, epoxy resin filling materials can be selected, gaps around the supporting sheets 7 are filled, and the supporting sheets 7 are fixedly installed and have a certain compression-resistant supporting effect.

Further, the inner side surface of the corrugated aluminum sheath 6 is provided with a heat transfer layer 9 which is made of metal wires with good flexibility and has good heat dissipation or heat conduction function.

Further, the inboard surface mounting of inoxidizing coating 5 has heat conduction circle 11, there is the wire part that density is less and the heat conductivity is good in heat conduction circle 11 inside, it is less with well package inner core 2 interval, can absorb the heat that well package inner core 2 produced, and transmit for heat conduction circle 11 through the heat transfer, the surface mounting of heat conduction circle 11 has conducting strip 10, and the end of conducting strip 10 extends to heat transfer layer 9 surface through backing sheet 7, can carry out directional guide with the heat, carry for heat transfer layer 9, and spread the heat outward through wrinkle aluminium sheath 6, reach the mesh that improves the radiating efficiency of cooling.

Furthermore, the outer surface of the halogen-free low-smoke flame-retardant outer sheath 8 is uniformly provided with the outer sheath 1, the outer sheath 1 is arranged in a triangular strip shape and extends along the axial direction of the middle-package inner core 2, and is influenced by the triangular structure, so that the contact area can be reduced when the cable is arranged on a wall, the halogen-free low-smoke flame-retardant outer sheath 8 can not be directly damaged when the cable is pulled, a certain wear-resisting effect is indirectly achieved, the cable is prevented from being directly damaged by external components, the contact area with the soil can be increased by means of the characteristic of larger triangular surface area when the cable is buried in the soil, the burying stability is improved, and the actual heat dissipation area can be increased during subsequent heat dissipation.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. The utility model provides a fire-retardant low tension cable of well cladding, includes cable main part and the inside well package inner core (2) of cable main part, its characterized in that: shielding layer (3) are installed in the outside of well package inner core (2), wrinkle aluminum sheath (6) are installed in the outside of shielding layer (3), and install supporting mechanism between wrinkle aluminum sheath (6) and shielding layer (3), the outside surface mounting of wrinkle aluminum sheath (6) has halogen-free low fire-retardant oversheath of cigarette (8).

2. The middle cladding flame-retardant low-voltage cable according to claim 1, characterized in that: the supporting mechanism comprises a protective layer (5) and a supporting component, the protective layer (5) is arranged on the outer side surface of the shielding layer (3), and the supporting component is arranged at the gap between the protective layer (5) and the corrugated aluminum sheath (6).

3. The middle cladding flame-retardant low-voltage cable according to claim 2, characterized in that: the supporting part comprises a supporting sheet (7) and a supporting block (12), the supporting sheet (7) is installed on the surface of the outer side of the protective layer (5), the supporting block (12) is installed on the top end of the supporting sheet (7), the surface of the top end of the supporting block (12) is an arc-shaped surface, and the supporting sheet (4) is filled around the supporting sheet (7).

4. The middle cladding flame-retardant low-voltage cable according to claim 1, characterized in that: the inner side surface of the corrugated aluminum sheath (6) is provided with a heat transfer layer (9).

5. The middle cladding flame-retardant low-voltage cable according to claim 2, characterized in that: the heat transfer layer is characterized in that a heat conduction ring (11) is arranged on the surface of the inner side of the protective layer (5), a heat conduction sheet (10) is arranged on the surface of the heat conduction ring (11), and the tail end of the heat conduction sheet (10) extends to the surface of the heat transfer layer (9) through a support sheet (7).

6. The middle cladding flame-retardant low-voltage cable according to claim 1, characterized in that: the outer side surface mounting of halogen-free low smoke flame retardant oversheath (8) has outer jacket (1), and outer jacket (1) is the triangle strip and lays.

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