CN217740199U

CN217740199U - Cable with low-smoke halogen-free insulating cross-linked polyolefin sheath

Info

Publication number: CN217740199U
Application number: CN202221504072.6U
Authority: CN
Inventors: 李文岳
Original assignee: Qingdao Tianhang Cable Co ltd
Current assignee: Qingdao Tianhang Cable Co ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-11-04
Anticipated expiration: 2032-06-15

Abstract

The utility model relates to a cable equipment field, specifically speaking relates to a cable with insulating crosslinked polyolefin sheath of low smoke and zero halogen. It includes the cable, the cable includes three conductor at least, the first shielding layer of the equal fixedly connected with of three conductor outer wall, first shielding layer outer wall fixedly connected with insulating layer, the fire-retardant layer of fixedly connected with a plurality of in the insulating layer, the fire-retardant layer of a plurality of uses the centre of a circle department of conductor to arrange for the annular array, insulating layer outer wall fixedly connected with second shielding layer, the cable still includes the pitch layer, the cylinder structure of pitch layer for upper and lower intercommunication, three second shielding layer is inside the pitch layer, three second shielding layer uses pitch layer center department to arrange for the annular array, pitch in situ portion is equipped with the filling layer, pitch layer outer wall fixedly connected with steel band armor, steel band armor outer wall fixedly connected with polyethylene oversheath, if when having solved the conflagration, the cable burning can release a large amount of poisonous gas and smog, the circumstances of healthy and polluted environment.

Description

Cable with low-smoke halogen-free insulating cross-linked polyolefin sheath

Technical Field

The utility model relates to a cable equipment field, specifically speaking relates to a cable with insulating crosslinked polyolefin sheath of low smoke and zero halogen.

Background

A cable is an electric energy or signal transmission device, generally made of one or more mutually insulated conductors and an outer insulating protective layer, and is a wire for transmitting electric power or information from one place to another, and the cable includes a power cable, a control cable, a compensation cable, a shielding cable, a high-temperature cable, a computer cable, a signal cable, a coaxial cable, a fire-resistant cable, a marine cable, a mining cable, an 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.

Most of cable insulation materials used at present are made of halogen-containing materials, although halogen flame retardants have good flame retardant performance, since the halogen flame retardants contain a large amount of halogen elements, a large amount of smoke and toxic corrosive gases are generated during combustion, and if a fire disaster occurs, the cable combustion releases a large amount of toxic gases and smoke, so that the health is damaged and the environment is polluted.

SUMMERY OF THE UTILITY MODEL

The utility model provides a cable with insulating crosslinked polyolefin sheath of low smoke and zero halogen to the technical problem that the foretell cable with insulating crosslinked polyolefin sheath of low smoke and zero halogen existed.

In order to achieve the above purpose, the utility model discloses a technical scheme do, the utility model provides a cable with insulating crosslinked polyolefin sheath of low smoke and zero halogen, the power distribution cable comprises a cable, the cable includes three conductor, every at least the first shielding layer of the equal fixedly connected with of conductor outer wall, first shielding layer outer wall fixedly connected with insulating layer, the fire-retardant layer of fixedly connected with a plurality of in the insulating layer, a plurality of fire-retardant layer uses the centre of a circle department of conductor to arrange for the axle annular array, insulating layer outer wall fixedly connected with second shielding layer, the cable still includes the pitch layer, the cylinder structure of pitch layer intercommunication about for, every the second shielding layer is in pitch in situ portion, three the second shielding layer uses pitch layer center department to arrange for the axle annular array, pitch in situ portion is equipped with the filling layer, pitch layer outer wall fixedly connected with of pitch layer armoring, steel band outer wall fixedly connected with polyethylene oversheath.

The flame-retardant layer at least comprises a plurality of first flame-retardant plates, and the first flame-retardant plates are aluminum hydroxide materials.

As a further improvement of the technical scheme, a second flame-retardant plate is arranged on one side of the first flame-retardant plate, and the second flame-retardant plate is made of magnesium hydroxide materials.

As a further improvement of the technical scheme, an anti-oxygen layer is fixedly connected in the insulating layer, the anti-oxygen layer is of a cylindrical structure communicated with the upper part and the lower part, and the flame-retardant layer penetrates through the upper arm and the lower arm of the anti-oxygen layer.

As a further improvement of the technical scheme, a smoke suppression layer is attached to the inner side of the oxygen resistant layer, the flame retardant layer penetrates through the upper arm and the lower arm of the smoke suppression layer, and the smoke suppression layer is made of a copper compound material.

As a further improvement of the technical scheme, the outer wall of the second shielding layer is fixedly connected with a waterproof vacuum aluminum foil.

As a further improvement of the technical scheme, the center of the filling layer is fixedly provided with a tensile rib, and the tensile rib is positioned among the three vacuum aluminum foils.

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

1. in this cable with insulating crosslinked polyolefin sheath of low smoke and zero halogen, through insulating layer and fire-retardant layer and the oxygen resistant layer that sets up, when using, the heat resistance and the life of insulating layer can be improved on the oxygen resistant layer, if when the conflagration burning takes place, the intraformational aluminium hydroxide of fire-retardant, magnesium hydroxide can release the crystal water, absorb a large amount of heats, and meanwhile, dehydration can produce a large amount of steam, and it can dilute combustible gas to prevent the burning.

2. In this cable with insulating crosslinked polyolefin sheath of low smoke and zero halogen, through the smoke suppression layer and the vacuum aluminum foil that set up, when using, because there is aluminium hydroxide, magnesium hydrate in the fire-retardant layer to make the very easily moisture absorption of halogen-free flame retardant cable material, and vacuum aluminum foil is then better isolated the moisture, has prolonged the life of cable.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 2 is a schematic top view of a conductor according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of an embodiment of the present invention;

fig. 4 is a schematic structural view of a flame retardant layer according to an embodiment of the present invention.

The various reference numbers in the figures mean:

10. a cable;

20. a conductor; 21. a first shielding layer; 22. an insulating layer; 23. an oxygen-resistant layer; 24. a smoke suppression layer; 25. a flame retardant layer; 250. a first flame retardant sheet; 251. a second flame retardant sheet; 26. a second shielding layer; 27. vacuum aluminum foil; 28. tensile strength;

30. an asphalt layer; 31. a filling layer; 32. steel tape armoring; 33. a polyethylene outer sheath.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 the skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Embodiment, as shown in fig. 1-4, the utility model provides a cable with insulating crosslinked polyolefin sheath of low smoke and zero halogen, including cable 10, cable 10 includes three conductor 20 at least, the equal fixedly connected with first shielding layer 21 of every conductor 20 outer wall, its main purpose is just in order to shield conductor 20, first shielding layer 21 outer wall fixedly connected with insulating layer 22, its main purpose is just in order to make insulating layer 22 insulating, fixedly connected with a plurality of flame retardant layer 25 in insulating layer 22, a plurality of flame retardant layer 25 uses the centre of a circle department of conductor 20 to arrange for the collar form array, its main purpose is just in order to suppress cigarette and fire-retardant, insulating layer 22 outer wall fixedly connected with second shielding layer 26, its main purpose is just in order to shield insulating layer 22, cable 10 still includes asphalt layer 30, asphalt layer 30 is the cylinder structure of upper and lower intercommunication, every second shielding layer 26 is inside asphalt layer 30, three second shielding layer 26 uses the centre department of asphalt layer 30 to arrange for the collar form array, asphalt layer 30 is equipped with filling layer 31 inside, it is mainly used for making the external diameter of round to make the whole to do benefit to the outer wall of round cable and outer wall and outer sheath 32 fixed polyethylene sheath is the polyethylene steel tape 33, it increases the armor tape and uses the armor 33 to prevent to assault polyethylene tape to increase the polyethylene tape and to damage to the armor tape and use the armor tape to increase the armor tape.

The working process is as follows: the steel tape armor 32 installed in the polyethylene outer sheath 33 can prevent the conductor 20 in the cable 10 from being affected when touching hard objects, the halogen-free flame-retardant cable 10 material is easy to absorb moisture due to the flame-retardant layer 25, the vacuum aluminum foil 27 is installed on the outer side of the second shielding layer 26, moisture is better isolated, the service life of the cable 10 is prolonged, the whole cable 10 is improved in toughness under the action of the tensile rib 28, if a fire disaster occurs or the cable is in combustion, the flame-retardant layer 25 can block a channel of high polymer and external hot oxygen reaction, flame self-extinguishes, the residual carbon rate can be increased by the smoke suppression layer 24, and the smoke generation amount is reduced to achieve the smoke suppression effect.

In consideration of the necessity of flame retardancy, the flame-retardant layer 25 includes at least several first flame-retardant sheets 250, and the first flame-retardant sheets 250 are aluminum hydroxide materials.

Considering that a larger flame-retardant filling material is required to achieve the flame-retardant effect, one side of the first flame-retardant board 250 is provided with a second flame-retardant board 251, and the second flame-retardant board 251 is made of magnesium hydroxide.

In consideration of improving the heat-resistant life of the flame-retardant layer 25, an oxygen-resistant layer 23 is fixedly connected in the insulating layer 22, the oxygen-resistant layer 23 is of a vertically communicated cylindrical structure, and the flame-retardant layer 25 penetrates through the upper and lower arms of the oxygen-resistant layer 23.

In consideration of smoke suppression, a smoke suppression layer 24 is attached to the inner side of the oxygen resistant layer 23, a flame retardant layer 25 penetrates upper and lower arms of the smoke suppression layer 24, and the smoke suppression layer 24 is made of a copper compound material.

Considering that the first flame retardant plate 250 and the second flame retardant plate 251 easily absorb moisture, a vacuum aluminum foil 27 for waterproofing is fixedly attached to the outer wall of the second shield layer 26.

Considering that a large amount of inorganic materials deteriorate the mechanical properties of the cable 10, the center of the filling layer 31 is fixedly installed with the tensile rib 28, and the tensile rib 28 is located among the three vacuum aluminum foils 27.

The utility model discloses when specifically using, the steel band armor 32 of installation in polyethylene oversheath 33, make can not influence conductor 20 in the cable 10 when touchhing hard article, because there is aluminium hydroxide in the fire-retardant layer 25, magnesium hydroxide makes halogen-free flame retarded cable 10 material very easily absorb moisture, make vacuum aluminum foil 27 install in the second shielding layer 26 outside, then better isolated moisture, the life of cable 10 has been prolonged, under the effect of anti lacing wire 28, also make whole cable 10 improve toughness, if the conflagration takes place or be in when burning, aluminium hydroxide in the fire-retardant layer 25, magnesium hydroxide can release crystal water, absorb a large amount of heat, meanwhile, dehydration can produce big vapor, it can dilute combustible gas, thereby prevent the burning, in addition can form the one deck on the material surface and do not melt incombustible oxide crust, the passageway of high polymer with external thermal oxidation reaction has been blocked, final material fire-retardant, put out, and press down the copper compound in the smoke suppression layer 24 can make the carbon residue rate increase when burning, make the volume of giving out reduce and reach the effect of pressing down the cigarette.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only the preferred embodiments of the present invention, and is not intended to limit the present invention, and that there may be various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A cable with a low smoke zero halogen insulating cross-linked polyolefin sheath, comprising a cable (10), characterized in that: the cable (10) at least comprises three conductors (20), each conductor (20) outer wall is fixedly connected with a first shielding layer (21), the first shielding layer (21) outer wall is fixedly connected with an insulating layer (22), the insulating layer (22) is internally fixedly connected with a plurality of flame retardant layers (25) and a plurality of the flame retardant layers (25) are arranged in a ring-shaped array mode by using the circle centers of the conductors (20), the insulating layer (22) outer wall is fixedly connected with a second shielding layer (26), the cable (10) further comprises an asphalt layer (30), the asphalt layer (30) is of a cylindrical structure communicated from top to bottom, each second shielding layer (26) is arranged inside the asphalt layer (30) and is three in a ring-shaped array mode by using the center of the asphalt layer (30), a filling layer (31) is arranged inside the asphalt layer (30), an armor steel belt (32) is fixedly connected with the outer wall of the asphalt layer (30), and a polyethylene sheath (33) is fixedly connected with the outer wall of the armor belt (32).

2. The cable with low smoke, zero halogen, insulating, crosslinked polyolefin jacket according to claim 1, characterized in that: the flame-retardant layer (25) at least comprises a plurality of first flame-retardant plates (250), and the first flame-retardant plates (250) are aluminum hydroxide materials.

3. The cable with low smoke zero halogen insulated crosslinked polyolefin jacket according to claim 2, characterized in that: one side of the first flame-retardant plate (250) is provided with a second flame-retardant plate (251), and the second flame-retardant plate (251) is made of magnesium hydroxide material.

4. The cable with low smoke, zero halogen, insulating, crosslinked polyolefin jacket according to claim 1, characterized in that: fixedly connected with anti oxygen layer (23) in insulating layer (22), anti oxygen layer (23) are the cylinder structure of upper and lower intercommunication, fire-retardant layer (25) run through on anti oxygen layer (23) underarm.

5. The cable with low smoke zero halogen insulating crosslinked polyolefin sheath of claim 4, characterized in that: the inner side of the anti-oxygen layer (23) is attached with a smoke suppression layer (24), the flame retardant layer (25) penetrates through the upper and lower arms of the smoke suppression layer (24), and the smoke suppression layer (24) is made of a copper compound material.

6. The cable with low smoke zero halogen insulated crosslinked polyolefin jacket according to claim 1, characterized in that: and the outer wall of the second shielding layer (26) is fixedly connected with a waterproof vacuum aluminum foil (27).

7. The cable with low smoke zero halogen insulated cross-linked polyolefin sheath of claim 6, characterized in that: the central position of the filling layer (31) is fixedly provided with an anti-pulling rib (28), and the anti-pulling rib (28) is positioned in the middle of the vacuum aluminum foil (27).