CN213635484U - Based on fire-retardant lightning protection cable of low smoke and zero halogen - Google Patents

Abstract

The utility model provides a based on fire-retardant lightning protection cable of low smoke and zero halogen belongs to cable technical field to in solving current fire-retardant lightning protection cable based on low smoke and zero halogen, its structural function is single, lacks reasonable cable and cuts off fire-retardant subassembly, when the cable burns, can't block the burning way, leads to the cable impaired seriously, causes huge economic loss's problem, including the wire, the wire is stranded into the rope form by the copper wire, and the wire cyst has the insulating layer. The utility model discloses in because hinder the closed loop and be the loop configuration, and hinder the intra-annular anchor ring and be equipped with edges and corners, two are hindered to be connected through three gasbags between the closed loop, and three gasbags are the annular array mode and distribute, and the gasbag intussuseption is filled with the sealed glue of elastomer fire prevention of thermal energy, and when electric wire burning or thunderbolt, the heat of its production can let the gasbag inflation break, makes the sealed glue of elastomer fire prevention of inside release, provides flame retardant efficiency.

Description

Based on fire-retardant lightning protection cable of low smoke and zero halogen

Technical Field

The utility model belongs to the technical field of the cable, more specifically say, in particular to based on fire-retardant lightning protection cable of low smoke and zero halogen.

Background

In industrial and mining enterprises and energy transportation departments, power cables with alternating current rated voltage of 0.6/1KV or below are often used to realize the functions of cable conduction and supply. As is well known, the traditional power cable is composed of a wire core and an insulating sheath layer wrapped on the outer layer of the wire core, the cable is low in flame retardant property, secondary damage to personal and property safety is caused by a large amount of smoke and toxic gas generated in combustion, and property loss and even fire disasters are caused by lightning stroke easily in thunderstorm weather. Therefore, how to make cable cables capable of avoiding these adverse effects and improving the performance of lightning protection becomes a problem of concern in the cable technology industry today.

As in application No.: the utility model of CN201320529675.6 discloses a low-smoke halogen-free flame-retardant lightning protection cable, which comprises a low-smoke halogen-free polyolefin sheath layer, a low-smoke halogen-free wrapping layer, a copper stranded wire, a crosslinked polyethylene insulating layer, a low-smoke halogen-free filler and a stainless steel band lightning protection layer; wherein the outer parcel of copper strands has the one deck crosslinked polyethylene insulating layer, and it has low smoke and zero halogen filler still to fill outside crosslinked polyethylene insulating layer to use low smoke and zero halogen to wrap up low smoke and zero halogen filler, low smoke and zero halogen is equipped with one deck stainless steel band lightning protection layer around the covering skin, still is equipped with one deck low smoke and zero halogen polyolefin restrictive coating outside the stainless steel band lightning protection layer.

Based on the retrieval of above-mentioned patent to and combine the equipment discovery among the prior art, among the fire-retardant lightning protection cable of current low smoke and zero halogen, its structural function is single, lacks reasonable cable and cuts off fire-retardant subassembly, when the cable burning, can't block the burning way, leads to the cable impaired seriously, causes huge economic loss.

Therefore, in view of the above, research and improvement are performed on the existing structure and defects, and a low-smoke halogen-free flame-retardant lightning protection cable is provided, so as to achieve the purpose of higher practical value.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a based on fire-retardant lightning protection cable of low smoke and zero halogen to solve current based on fire-retardant lightning protection cable of low smoke and zero halogen, its structural function is single, lacks reasonable cable and cuts off fire-retardant subassembly, when the cable burning, can't block the burning way, leads to the cable impaired seriously, causes huge economic loss's problem.

The utility model discloses based on fire-retardant lightning protection cable's of low smoke and zero halogen purpose and efficiency, by following concrete technical means reach:

a low-smoke halogen-free flame-retardant lightning protection cable comprises a wire, wherein the wire is twisted by copper wires into a rope shape and is encapsulated with an insulating layer; a halogen-free wrapping layer is encapsulated on the periphery of the lead; a polypropylene filler is arranged between the halogen-free wrapping layer and the insulating layer; the halogen-free wrapping layer encapsulates an outer sheath; the halogen-free wrapping layer is provided with a sleeve, and the sleeve is sleeved on the outer peripheral surface of the polypropylene filler; two mounting rings are sleeved on the sleeve; two blocking rings are arranged between the two mounting rings, are sleeved on the outer peripheral surface of the sleeve, and are fixedly connected with the halogen-free wrapping layer in an embedding mode.

Further, the sleeve pipe includes solid fixed ring and pin, the sleeve pipe is the cylindricality and leads to the chamber structure, and the sleeve pipe is made for light incombustible aluminum alloy material, sleeve pipe both ends fixed mounting has solid fixed ring, and all is equipped with three pins on the solid fixed ring.

Furthermore, the mounting ring comprises an extension spring and mounting holes, the mounting ring is of an annular structure, three mounting holes are formed in the mounting ring, the mounting holes are matched with the pins, the two mounting rings are distributed in a symmetrical mode, the extension springs are fixedly mounted on the inner side of the mounting ring, the extension springs are distributed in an annular array mode, and the end portions of the extension springs are fixedly connected with the blocking ring.

Furthermore, the two mounting rings are matched with the fixing rings, the pins penetrate through the mounting holes, and the fixing rings are fixedly connected with the mounting rings through the pins.

Furthermore, the blocking ring comprises edges and air bags, the blocking ring is of an annular structure, the edges are arranged on the inner ring surface of the blocking ring, the two blocking rings are connected through the three air bags, the three air bags are distributed in an annular array mode, and the air bags are filled with thermal-expansion elastomer fireproof sealant.

Compared with the prior art, the utility model discloses following beneficial effect has:

because the collar is the loop configuration, and seted up three mounting holes on the collar, and mounting hole and pin phase-match, two collars are the symmetric mode and distribute, and the relative inboard fixed mounting of collar has extension spring, extension spring is the annular array mode and distributes, and extension spring tip and the fixed connection of blocking the ring, wherein the sleeve pipe segmentation is installed in the cable, the collar is convenient with the sleeve pipe installation, and when receiving lightning impulse, through extension spring's elastic action, the pulling blocks the ring and makes halogen-free around the covering fracture, lose the burning way, thereby avoid the cable impaired in a large number.

Because the closed ring is of an annular structure, the edge angle is arranged on the inner ring surface of the closed ring, the two closed rings are connected through three air bags, the three air bags are distributed in an annular array mode, the elastic body fireproof sealant with thermal expansion is filled in the air bags, when an electric wire is burnt or struck by lightning, the heat generated by the elastic body fireproof sealant can enable the air bags to expand and break, the elastic body fireproof sealant inside the air bags is released, and the flame-retardant effect is provided.

Drawings

Fig. 1 is a schematic axial view of the present invention.

Fig. 2 is a schematic view of the structure of fig. 1 with the outer sheath removed.

Fig. 3 is a schematic structural view of fig. 2 after the halogen-free wrapping layer is removed.

Fig. 4 is a schematic diagram of the structure of the sleeve, the mounting ring and the blocking ring according to the present invention.

Fig. 5 is a schematic view of the structure of fig. 4 with the sleeve removed.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a wire; 2. a halogen-free wrapping layer; 3. a polypropylene filler; 4. an insulating layer; 5. an outer sheath; 6. a sleeve; 601. a fixing ring; 602. a pin; 7. a mounting ring; 701. an extension spring; 702. mounting holes; 8. a blocking loop; 801. edges and corners; 802. an air bag.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like 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 "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 5:

the utility model provides a low-smoke halogen-free flame-retardant lightning protection cable, which comprises a lead 1, wherein the lead 1 is twisted into a rope shape by copper wires, and the lead 1 is encapsulated with an insulating layer 4; a halogen-free wrapping layer 2 is encapsulated on the periphery of the lead 1; a polypropylene filler 3 is arranged between the halogen-free wrapping layer 2 and the insulating layer 4; the halogen-free wrapping layer 2 is encapsulated with an outer sheath 5; the halogen-free wrapping layer 2 is provided with a sleeve 6, and the sleeve 6 is sleeved on the outer peripheral surface of the polypropylene filler 3; the sleeve 6 comprises a fixing ring 601 and pins 602, the sleeve 6 is of a cylindrical through cavity structure, the sleeve 6 is made of light and non-combustible aluminum alloy materials, the fixing rings 601 are fixedly installed at two ends of the sleeve 6, and the three pins 602 are arranged on the fixing rings 601; the sleeve 6 is sleeved with two mounting rings 7; the two mounting rings 7 are matched with the fixing ring 601, the pin 602 penetrates through the mounting hole 702, and the fixing ring 601 is fixedly connected with the mounting ring 7 through the pin 602; two closed loops 8 are arranged between the two mounting rings 7, the two closed loops 8 are sleeved on the outer peripheral surface of the sleeve 6, and the closed loops 8 are fixedly connected with the halogen-free wrapping layer 2 in an embedded mode.

Wherein, the collar 7 includes extension spring 701 and mounting hole 702, the collar 7 is the loop configuration, and seted up three mounting hole 702 on the collar 7, and mounting hole 702 and pin 602 phase-match, two department collars 7 are the symmetric mode and distribute, and the relative inboard fixed mounting of collar 7 has extension spring 701, extension spring 701 is the annular array mode and distributes, and extension spring 701 tip and 8 fixed connection of the ring that blocks, wherein 6 segmentation installations of sleeve pipe are in the cable, the collar 7 is convenient with 6 installations of sleeve pipe, and when receiving the lightning impulse, through extension spring 701's elastic reaction, the pulling blocks that closed ring 8 makes halogen-free around covering 2 fracture, lose the burning way, thereby avoid a large amount of impaired cables.

Wherein, it includes edges and corners 801 and gasbag 802 to hinder closed ring 8, hinders closed ring 8 and is the loop configuration, and hinders the interior anchor ring of closed ring 8 and be equipped with edges and corners 801, is connected through three gasbags 802 between two department hinders closed ring 8, and three gasbag 802 are the annular array mode and distribute, and gasbag 802 intussuseption is filled with the sealed glue of elastomer fire prevention of thermal expansion, and when electric wire burning or thunderbolt, the heat that its produced can let gasbag 802 inflation rupture, makes inside sealed glue of elastomer fire prevention release, provides fire-retardant effect.

The specific use mode and function of the embodiment are as follows:

in the utility model, during the use, the collar 7 is the loop configuration, and three mounting holes 702 have been seted up on the collar 7, and mounting holes 702 and pin 602 phase-match, two collar 7 are the distribution of symmetry mode, and the relative inboard fixed mounting of collar 7 has extension spring 701, extension spring 701 is the distribution of annular array mode, and extension spring 701 tip and the ring 8 fixed connection that blocks, wherein sleeve pipe 6 segmentation is installed in the cable, the collar 7 is convenient with sleeve pipe 6 installation, and when receiving the lightning impulse, through the elastic action of extension spring 701, the pulling blocks ring 8 and makes halogen-free around covering 2 fracture, lose the burning way, thereby avoid the cable to be impaired in a large number;

in addition, the blocking ring 8 is of an annular structure, the inner annular surface of the blocking ring 8 is provided with a corner 801, the two blocking rings 8 are connected through three air bags 802, the three air bags 802 are distributed in an annular array mode, the air bags 802 are filled with thermal expansion elastomer fireproof sealant, when an electric wire is burnt or struck by lightning, the generated heat can enable the air bags 802 to expand and break, the elastomer fireproof sealant inside the electric wire can be released, and the flame retardant effect is provided.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (5)

1. A flame-retardant lightning protection cable based on low smoke and zero halogen is characterized in that: the cable comprises a lead (1), wherein the lead (1) is stranded by copper wires into a rope shape, and an insulating layer (4) is encapsulated in the lead (1); a halogen-free wrapping layer (2) is encapsulated on the periphery of the lead (1); a polypropylene filler (3) is arranged between the halogen-free wrapping layer (2) and the insulating layer (4); the halogen-free wrapping layer (2) is encapsulated with an outer sheath (5); the halogen-free wrapping layer (2) is provided with a sleeve (6), and the sleeve (6) is sleeved on the peripheral surface of the polypropylene filler (3); the sleeve (6) is sleeved with two mounting rings (7); two closed loops (8) are arranged between the two mounting rings (7), the two closed loops (8) are sleeved on the outer peripheral surface of the sleeve (6), and the closed loops (8) are fixedly connected with the halogen-free wrapping layer (2) in an embedded mode.

2. The low-smoke halogen-free flame-retardant lightning protection cable according to claim 1, wherein: sleeve pipe (6) are including solid fixed ring (601) and pin (602), sleeve pipe (6) are the cylindricality and lead to the chamber structure, and sleeve pipe (6) are made for light incombustible aluminum alloy material, sleeve pipe (6) both ends fixed mounting has solid fixed ring (601), and all is equipped with three on the solid fixed ring (601) and locates pin (602).

3. The low-smoke halogen-free flame-retardant lightning protection cable according to claim 1, wherein: installing ring (7) include extension spring (701) and mounting hole (702), installing ring (7) are loop configuration, and have seted up three mounting hole (702) on installing ring (7) to mounting hole (702) and pin (602) phase-match, two installing ring (7) are the symmetric mode and distribute, and the relative inboard fixed mounting of installing ring (7) has extension spring (701), extension spring (701) are the annular array mode and distribute, and extension spring (701) tip with hinder closed loop (8) fixed connection.

4. The low-smoke halogen-free flame-retardant lightning protection cable according to claim 1, wherein: the two mounting rings (7) are matched with the fixing ring (601), the pin (602) penetrates through the mounting hole (702), and the fixing ring (601) is fixedly connected with the mounting ring (7) through the pin (602).

5. The low-smoke halogen-free flame-retardant lightning protection cable according to claim 1, wherein: hinder closed loop (8) including edges and corners (801) and gasbag (802), hinder closed loop (8) and be the loop configuration, and hinder closed loop (8) inner ring face and be equipped with edges and corners (801), two are said to hinder and be connected through three gasbag (802) between the closed loop (8), and three gasbag (802) are the annular array mode and distribute, gasbag (802) intussuseption is filled with the sealed glue of elastomer fire prevention of thermal expansion.

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