CN215600146U - Flame-retardant power line - Google Patents

Abstract

The utility model provides a flame-retardant power cord, comprising: the sheath, the inboard of sheath is provided with and separates the fire layer, and separates the inside on fire layer and be provided with fire-retardant stopping, the inside of fire-retardant stopping is provided with keeps apart the shell fragment, and keeps apart the middle part of shell fragment and set up to central closed region's inside is provided with the tensile cord, central closed region's the outside is provided with the isolation region, and the inside of isolation region is provided with the heat dissipation buffer hole, and the inboard in heat dissipation buffer hole is provided with the original line of sub-strand, the original line of sub-strand is including the first insulation layer on outer second insulating layer and inlayer. The utility model utilizes the partition connection structure of the isolating elastic sheet to facilitate the isolated distribution and installation of the single-stranded wires, thereby facilitating the increase of the mutual insulation performance and the heat dissipation effect, and utilizes the elastic functions of the heat dissipation holes, the triangular holes and the isolating elastic sheet to facilitate the heat dissipation in the isolating power line and the increase of the compression-resistant buffering effect on the outside, thereby effectively protecting the power line and prolonging the service life.

Description

Flame-retardant power line

Technical Field

The utility model relates to the technical field of manufacturing of flame-retardant power lines, in particular to a flame-retardant power line.

Background

The flame-retardant cable maintains the electrical property and the physical and chemical properties of a common cable, and has self-extinguishing property, namely, the flame-retardant cable is not easy to burn, or when the cable fires due to reasons or an external fire source ignites to fire, the cable does not continue to burn after the fire extinguishes, or the burning time is short (within 60 minutes), or the flame-retardant length is short; because the cost is lower, the flame is retarded and delayed to spread along the cable, so that the fire is not expanded; therefore, the cable is a cable variety widely adopted in fireproof cables; the cable is possibly burnt out and cannot run under the condition of fire, but the spread of fire can be prevented, and larger loss is avoided; the structure of the flame-retardant cable is basically the same as that of a common cable, and the difference is that the insulating layer, the sheath, the outer protective layer and auxiliary materials (wrapping and filling) of the flame-retardant cable are all or partially made of flame-retardant materials.

However, the stranded wires inside the existing flame-retardant power line are tightly attached, so that heat dissipation and insulation performance protection are not facilitated, and the internal flame-retardant material structure is tightly wrapped, so that the compression-resistant buffering performance is poor, and the cable is easily damaged by extrusion in the installation and wiring process.

SUMMERY OF THE UTILITY MODEL

For overcoming the defect that prior art exists, now provide a fire-retardant power cord to solve the inside split conductor of current fire-retardant power cord and closely laminate, be unfavorable for the heat dissipation and protect insulating properties, and inside fire-retardant material structure parcel is inseparable, leads to resistance to compression buffering performance relatively poor, receives the problem of extrusion damage easily in the installation wiring process.

To achieve the above object, there is provided a flame retardant power cord including:

the sheath, the inboard of sheath is provided with and separates the fire layer, and separates the inside on fire layer and be provided with fire-retardant stopping, the inside of fire-retardant stopping is provided with keeps apart the shell fragment, and keeps apart the middle part of shell fragment and set up to central closed region's inside is provided with the tensile cord, central closed region's the outside is provided with the isolation region, and the inside of isolation region is provided with the heat dissipation buffer hole, and the inboard in heat dissipation buffer hole is provided with the original line of sub-strand, the original line of sub-strand is including the first insulation layer on outer second insulating layer and inlayer.

Further, it has the fire retardant to coat between the inner wall of fire barrier layer outside and sheath, and the sheath sets up to low smoke and zero halogen polyolefin material to fire barrier layer inside fire-retardant stopping sets up to the magnesium hydrate granule, and fire barrier layer sets up to mineral rock wool material.

Furthermore, keep apart the shell fragment and set up to nickel plating copper sheet material, and single isolation shell fragment sets up to the arc structure to two adjacent arc copper sheets form four isolation regions and a center closed region after passing through welding end welded connection, and two isolation regions constitute triangular hole with the inner wall of sheath.

Furthermore, the adjacent outer ends of the isolation elastic sheets are provided with arc copper sheets for connection treatment, the arc copper sheets extend into the sheath, and the isolation elastic sheets are kept in elastic contact with each other.

Further, the second insulating layer sets up to the polytetrafluoroethylene material, and the inboard of second insulating layer is provided with the fine weaving layer of glass that the glass fiber material was made to the inboard of fine weaving layer of glass is provided with the winding layer of fire-retardant non-woven fabrics material.

Further, the first insulating layer is arranged on the inner side of the winding layer, the first insulating layer is made of mineral mica, and copper wires are arranged inside the first insulating layer.

The flame-retardant power line has the beneficial effects that the flame-retardant power line utilizes the partition connection structure of the isolating elastic sheet, single-stranded wires are conveniently isolated and distributed and installed, further, the mutual insulation performance and the heat dissipation effect are conveniently increased, the heat dissipation in the power line is conveniently isolated, the compression-resistant buffering effect on the outside is increased by utilizing the elastic functions of the heat dissipation holes, the triangular holes and the isolating elastic sheet, the power line is effectively protected, and the service life is prolonged.

Drawings

Fig. 1 is a schematic view of an internal layered structure of a flame-retardant power cord according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a single strand original wire three-dimensional structure according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of a transverse cross-sectional structure of a power line according to an embodiment of the utility model.

Fig. 4 is a schematic view of a connection structure of an isolation elastic sheet according to an embodiment of the utility model.

1. A sheath; 2. a fire barrier layer; 3. a single strand of original wire; 31. a copper wire; 32. a first insulating layer; 33. a winding layer; 34. weaving a glass fiber layer; 35. a second insulating layer; 4. resisting the pulling wire; 5. flame-retardant filler; 6. a heat dissipation buffer hole; 7. isolating the elastic sheet; 8. a triangular hole; 9. an isolation region; 10. welding the end; 11. a central enclosed region.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

Fig. 1 is a schematic view of an internal layered three-dimensional structure of a flame-retardant power cord according to an embodiment of the present invention, fig. 2 is a schematic view of a single strand original wire three-dimensional structure according to an embodiment of the present invention, fig. 3 is a schematic view of a transverse cross-sectional structure of a power cord according to an embodiment of the present invention, and fig. 4 is a schematic view of a connection structure of an isolation spring plate according to an embodiment of the present invention.

Referring to fig. 1 to 4, the present invention provides a flame-retardant power cord, including: sheath 1, fire barrier layer 2 and isolation shell fragment 7.

Specifically, the inboard of sheath 1 is provided with separates fire layer 2, and the inside that separates fire layer 2 is provided with fire-retardant stopping 5, the inside of fire-retardant stopping 5 is provided with keeps apart shell fragment 7, and the middle part of keeping apart shell fragment 7 sets up to central closed area 11, and the inside of central closed area 11 is provided with tensile cord 4, the outside of central closed area 11 is provided with isolation zone 9, and the inside of isolation zone 9 is provided with heat dissipation buffer hole 6, and the inboard of heat dissipation buffer hole 6 is provided with the original line of sub-strand 3, original line of sub-strand 3 is including the first insulation layer 32 of outer second insulation layer 35 and inlayer.

In the embodiment, the fire barrier layer 2 has effective fire-proof and flame-retardant effects on the plurality of single-stranded wires 3 inside; the tensile wire 4 has the function of enhancing the longitudinal tensile capacity of the power line; the second insulating layer 35 and the first insulating layer 32 play an insulating protection effect on the copper wire 31.

In this embodiment, the coating has the fire retardant between the outside of fire barrier 2 and the inner wall of sheath 1, and sheath 1 sets up to low smoke and zero halogen polyolefin material to fire barrier 2 inside fire-retardant stopping 5 sets up to the magnesium hydrate granule, and fire barrier 2 sets up to mineral rock wool material.

As a better implementation mode, the flame retardant is coated between the inner walls of the sheath 1 to increase the isolation flame-retardant effect, and the sheath 1 made of the low-smoke halogen-free polyolefin material prevents the outside from being ignited to generate toxic dense smoke; the flame-retardant filling material 5 made of the magnesium hydroxide particles increases the internal pressure-resistant friction force, and generates friction and creep to buffer when receiving pressure.

In this embodiment, keep apart shell fragment 7 and set up to nickel plating copper sheet material, and single shell fragment 7 that keeps apart sets up to the arc structure to two adjacent arc copper sheets form four isolation regions 9 and a center closed region 11 through welding end 10 welded connection back, and two isolation regions 9 and the inner wall of sheath 1 constitute triangle hole 8.

As a preferred embodiment, the isolation elastic sheet 7 made of nickel-plated copper sheet has good toughness; the four isolation zones 9 form an independent mounting for the single strand of the original wire 3.

In this embodiment, the adjacent outer ends of the isolation elastic pieces 7 are provided with arc copper sheets for connection, and the arc copper sheets extend into the sheath 1, and the isolation elastic pieces 7 are in elastic contact with each other.

As a better implementation mode, the arc copper sheets are arranged to connect and process the isolation elastic sheets 7, so that the material inside the sheath 1 cannot be damaged, and the isolation elastic sheets 7 are elastically connected to each other, so that the isolation elastic sheets have good auxiliary toughness, and the structural strength and the buffer performance inside the power line are further improved.

In this embodiment, the second insulating layer 35 is made of teflon, the glass fiber woven layer 34 made of glass fiber is disposed on the inner side of the second insulating layer 35, and the winding layer 33 made of flame-retardant non-woven fabric is disposed on the inner side of the glass fiber woven layer 34.

As a preferred embodiment, the polytetrafluoroethylene second insulating layer 35 and the glass fiber woven layer 34 made of glass fiber material make the single-strand original wire 3 have good insulating property and tensile elongation property, and the winding layer 33 made of flame-retardant non-woven fabric material makes the single-strand original wire 3 have the effect of preventing the internal ignition from continuing outwards.

In the present embodiment, the first insulating layer 32 is disposed inside the winding layer 33, and the first insulating layer 32 is disposed as a mineral mica material, and the copper wires 31 are disposed inside the first insulating layer 32.

In a preferred embodiment, the first insulation layer 32 made of mineral mica increases the first insulation performance and flame retardant performance of the copper wire 31.

The flame-retardant power line can effectively solve the problems that stranded wires in the conventional flame-retardant power line are tightly attached, so that heat dissipation and insulation performance protection are not facilitated, and the internal flame-retardant material structure is tightly wrapped, so that the compression-resistant buffering performance is poor, and the wires are easily damaged by extrusion in the installation and wiring process.

Claims (6)

1. A flame retardant power cord, comprising: sheath (1), the inboard of sheath (1) is provided with separates flame retardant coating (2), and separates the inside of flame retardant coating (2) and be provided with fire-retardant stopping (5), the inside of fire-retardant stopping (5) is provided with keeps apart shell fragment (7), and keeps apart the middle part of shell fragment (7) and set up to central closed zone (11) to the inside of central closed zone (11) is provided with anti acting as go-between (4), the outside of central closed zone (11) is provided with isolation region (9), and the inside of isolation region (9) is provided with heat dissipation buffer hole (6) to the inboard of heat dissipation buffer hole (6) is provided with single strand original line (3), single strand original line (3) are including second insulating layer (35) and the first insulating layer (32) of inlayer of outer layer.

2. The power cord of claim 1, wherein a flame retardant is coated between the outer side of the fire barrier (2) and the inner wall of the sheath (1), the sheath (1) is made of low smoke halogen-free polyolefin, the flame retardant filler (5) in the fire barrier (2) is made of magnesium hydroxide particles, and the fire barrier (2) is made of mineral rock wool.

3. The flame-retardant power cord according to claim 1, wherein the isolating spring (7) is made of nickel-plated copper sheets, the single isolating spring (7) is made of an arc-shaped structure, two adjacent arc-shaped copper sheets are welded and connected through welding ends (10) to form four isolation regions (9) and a central closed region (11), and the two isolation regions (9) and the inner wall of the sheath (1) form a triangular hole (8).

4. The flame-retardant power cord as claimed in claim 1, wherein the adjacent outer ends of the isolating spring pieces (7) are provided with arc copper sheets for connection, the arc copper sheets extend into the sheath (1), and the isolating spring pieces (7) are in elastic contact with each other.

5. The flame-retardant power cord according to claim 1, wherein the second insulating layer (35) is made of teflon, a glass fiber woven layer (34) made of glass fiber is arranged on the inner side of the second insulating layer (35), and a winding layer (33) made of flame-retardant non-woven fabric is arranged on the inner side of the glass fiber woven layer (34).

6. The flame retardant power cord according to claim 1, wherein the first insulating layer (32) is provided on the inner side of the winding layer (33), and the first insulating layer (32) is provided in a mineral mica material, and the first insulating layer (32) is internally provided with the copper wire (31).

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