CN210271858U

CN210271858U - Anti-breaking flame-retardant cable

Info

Publication number: CN210271858U
Application number: CN201921279468.3U
Authority: CN
Inventors: 何建荣; 窦国祥; 何璐; 蒋祖良
Original assignee: Jiangsu Hongyun Cable Co ltd
Current assignee: Jiangsu Hongyun Cable Co ltd
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-04-07
Anticipated expiration: 2029-08-08

Abstract

The utility model belongs to the technical field of the cable, especially, for a prevent breaking flame retarded cable, including outer protective sheath, the inner wall of outer protective sheath is pegged graft and is had fire-retardant layer, the inside on fire-retardant layer is provided with the shielding layer, the inner wall of shielding layer is pegged graft and is had interior protective sheath, the inside of interior protective sheath is provided with the cable core protective sheath, the inside of cable core protective sheath is provided with the steel wire, the inner wall of cable core protective sheath is pegged graft and is had the water blocking layer, the inner wall of water blocking layer is pegged graft and is had the insulating layer, the inside. This prevent flame retarded cable that breaks through setting up six steel wires that are the annular array in the cable core protective sheath, when the cable received outside tensile force, very big some effort can be offset to the steel wire, and the effort that the cable core received reduces, has played the effect to the cable core protection of inside to the protectiveness of cable core has been strengthened, has avoided taking place the cable core fracture because of outside effort, has reached the effect that prevents to break.

Description

Anti-breaking flame-retardant cable

Technical Field

The utility model belongs to the technical field of the cable, concretely relates to prevent breaking flame retarded cable.

Background

Cables are generally rope-like cables made by stranding several or groups of conductors (at least two in each group), each group being insulated from each other 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 prior art has the following problems:

the stretch-proofing nature of cable that has now on the market is not enough, when being arranged in the great environment of some spans, often can lead to inside cable core to take place the fracture because of outside tensile force easily, and in addition, the bending resistance of current cable is not enough, in the use, causes buckling of cable easily under the external effort, and then influences the normal work of inside cable core, influences the life of cable.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a prevent breaking flame retarded cable has and prevents breaking and anti bending and the good characteristics of protectiveness.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a prevent breaking flame retarded cable, includes outer protective sheath, the inner wall of outer protective sheath is pegged graft and is had fire-retardant layer, the inside on fire-retardant layer is provided with the shielding layer, the inner wall of shielding layer is pegged graft and is had interior protective sheath, the inside of interior protective sheath is provided with the cable core protective sheath, the inside of cable core protective sheath is provided with the steel wire, the inner wall of cable core protective sheath is pegged graft and is had the water blocking layer, the inner wall of water blocking layer is pegged graft and is had the insulating layer, the inside of insulating layer is provided with the armor, the.

In order to improve the anti extrudability of cable, as the utility model relates to a prevent breaking flame retarded cable is preferred, the inside of interior protective sheath is provided with the elasticity protection strip, the quantity of elasticity protection strip is three, and is three the inside of protective sheath including the form setting of elasticity protection strip with annular array.

In order to prevent that the cable during operation from taking place the burning because of inside thermal resistance is too big, conduct the utility model relates to a prevent breaking fire-retardant cable is preferred, be provided with the clearance between interior protective sheath and the cable core protective sheath, be provided with fire-retardant filler in the clearance.

In order to prevent that the inside fault current of cable from taking place the burning, conduct the utility model relates to a prevent that stretch-breaking flame retarded cable is preferred, the inside of interior protective sheath is provided with the ground wire, the centre of a circle department of protective sheath is located in the ground wire.

In order to prevent that the cable from taking place the bending because of receiving external force, as the utility model relates to a prevent breaking fire-retardant cable is preferred, the surface of outer protective sheath is provided with the upper bracket, the surface of outer protective sheath is provided with the lower carriage, the upper bracket passes through screw and lower carriage fixed connection, the quantity of upper bracket and lower carriage is a plurality of, a plurality of upper bracket and lower carriage set up the surface at outer protective sheath with equidistant form.

In order to strengthen the tensile strength of cable, conduct the utility model relates to a prevent breaking flame retarded cable is preferred, the quantity of cable core protective sheath, water blocking layer, insulating layer, armor and cable core is three, and is three the inside of protective sheath including cable core protective sheath, water blocking layer, insulating layer, armor and cable core all set up with annular array's form.

In order to protect the inside cable core of cable, conduct the utility model relates to a prevent breaking fire retarded cable is preferred, the quantity of steel wire is eighteen, every the inside of cable core protective sheath all is provided with six steel wires, six the steel wire sets up the inside at the cable core protective sheath with the form of annular array.

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

1. the utility model discloses, through set up six steel wires that are annular array in the cable core protective sheath, when the cable received outside tensile force, very big partly effort can be offset to the steel wire, and at this moment, the effort that the cable core received reduces, has played the effect to the cable core protection of inside to carry the protectiveness that has strengthened the cable core, avoided taking place the cable core fracture because of outside effort, reached the effect that prevents to snap.

2. The utility model discloses, through the outside equidistant protective cradle that sets up of cable, when the cable receives outside effort, can play the effect of protection to the cable, prevent that the cable from taking place the bending and leading to inside cable core damage fracture even to strengthened the anti bending effect of cable, simultaneously, protective cradle simple structure, simple to operate.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a steel wire according to the present invention;

FIG. 3 is a schematic structural view of the bracket of the present invention;

FIG. 4 is an enlarged schematic view of the structure at A of FIG. 1 according to the present invention;

in the figure: 1. an outer protective sheath; 2. a flame retardant layer; 3. a shielding layer; 4. an inner protective sheath; 5. a cable core protective sleeve; 6. a steel wire; 7. a water resistant layer; 8. an insulating layer; 9. an armor layer; 10. a cable core; 11. an elastic protection strip; 12. a flame retardant filler; 13. a ground wire; 14. an upper bracket; 15. and a lower bracket.

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.

Example 1

Referring to fig. 1-4, the present invention provides the following technical solutions: the utility model provides a prevent breaking flame retarded cable, including outer protective sheath 1, the inner wall of outer protective sheath 1 is pegged graft and is had flame retardant coating 2, the inside of flame retardant coating 2 is provided with shielding layer 3, the inner wall of shielding layer 3 is pegged graft and is had interior protective sheath 4, the inside of interior protective sheath 4 is provided with cable core protective sheath 5, the inside of cable core protective sheath 5 is provided with steel wire 6, the inner wall of cable core protective sheath 5 is pegged graft and is had water blocking layer 7, the inner wall of water blocking layer 7 is pegged graft and is had insulating layer 8, the inside of insulating layer 8 is provided with armor 9, the inner.

In this embodiment: the flame retardant layer 2 is arranged to prevent burning caused by excessive thermal resistance inside the cable, the shielding layer 3 is arranged to prevent an external magnetic field from interfering with the operation of the cable core 10 inside the cable, the steel wire 6 is arranged inside the cable core protective sleeve 5 to prevent the cable core 10 from breaking caused by external acting force, the armor layer 9 is arranged on the outer surface of the cable core 10 to ensure that the cable core 10 is in good contact with the insulating layer 8, and the increase of the surface electric field intensity caused by the unsmooth surface of the cable core 10 is eliminated.

Specifically, the inner protection sleeve 4 is provided with three elastic protection strips 11, and the three elastic protection strips 11 are arranged in the inner protection sleeve 4 in an annular array manner.

In this embodiment: the three elastic protection strips 11 are arranged to form an annular array, so that the extrusion resistance of the cable is improved, and the internal cable core is protected.

Specifically, a gap is formed between the inner protective sleeve 4 and the cable core protective sleeve 5, and a flame-retardant filler 12 is arranged in the gap.

In this embodiment: the flame-retardant filler 12 is a PP foaming tape and has the characteristics of light specific gravity, good longitudinal tension, environmental protection and strong heat resistance.

Specifically, the inner protective sleeve 4 is provided with a ground wire 13 inside, and the ground wire 13 is located at the center of the inner protective sleeve 4.

In this embodiment: the cable is provided with a ground line 13, mainly for protecting the insulating layer 8 from breakdown due to the induced voltage when a large fault current passes through the cable core 10, and causing internal combustion.

Specifically, the outer surface of the outer protective sleeve 1 is provided with an upper support 14, the outer surface of the outer protective sleeve 1 is provided with a lower support 15, the upper support 14 is fixedly connected with the lower support 15 through screws, the number of the upper supports 14 and the number of the lower supports 15 are a plurality, and the plurality of upper supports 14 and the plurality of lower supports 15 are arranged on the outer surface of the outer protective sleeve 1 at equal intervals.

In this embodiment: the upper support 14 and the lower support 15 are arranged at equal intervals outside the outer protective sleeve 1, so that the stability of the cable can be enhanced, and the cable is prevented from being bent due to external force, and the inner cable core 10 is prevented from being damaged.

Specifically, the number of the cable core protective sleeve 5, the water blocking layer 7, the insulating layer 8, the armor layer 9 and the cable core 10 is three, and the three cable core protective sleeves 5, the water blocking layer 7, the insulating layer 8, the armor layer 9 and the cable core 10 are all arranged inside the inner protective sleeve 4 in an annular array mode.

In this embodiment: the cable core protective sleeve 5, the water-resistant layer 7, the insulating layer 8, the armor layer 9 and the cable core 10 form a complete cable, and the complete cable is in an annular array in the outer protective sleeve 1, so that the tensile resistance of the cable is enhanced.

Specifically, the number of the steel wires 6 is eighteen, six steel wires 6 are arranged inside each cable core protective sleeve 5, and the six steel wires 6 are arranged inside the cable core protective sleeve 5 in an annular array mode.

In this embodiment: the steel wires 6 are distributed in the cable core protective sleeve 5 in an annular array mode, the cable core 10 is well protected, when external stretching force is received, the steel wires 6 can offset a large part of acting force, and therefore the cable core 10 is prevented from being broken due to stress.

The utility model discloses a theory of operation and use flow: the utility model discloses in, the setting of fire-retardant layer 2 is in order to prevent that inside because of the too big burning that takes place of thermal resistance, the setting of shielding layer 3 is in order to prevent the inside cable core 10 work of external magnetic field interference cable, the effect that is provided with steel wire 6 in cable core protective sheath 5's inside prevents that cable core 10 from breaking because of receiving external acting force, armor 9 sets up the surface at cable core 10, for making cable core 10 and insulating layer 8 have good contact, eliminate the increase of the surface electric field intensity that arouses because cable core 10 surface is not smooth, outside equidistant upper bracket 14 and the lower carriage 15 of setting at outer protective sheath 1, can strengthen the stability of cable, prevent that the cable from taking place the bending because of receiving external force, lead to inside cable core 10 to damage.

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

1. The utility model provides a prevent flame retarded cable that breaks, includes outer protective sheath (1), its characterized in that: the cable is characterized in that a flame-retardant layer (2) is spliced on the inner wall of the outer protective sleeve (1), a shielding layer (3) is arranged inside the flame-retardant layer (2), an inner protective sleeve (4) is spliced on the inner wall of the shielding layer (3), a cable core protective sleeve (5) is arranged inside the inner protective sleeve (4), a steel wire (6) is arranged inside the cable core protective sleeve (5), a water-resistant layer (7) is spliced on the inner wall of the cable core protective sleeve (5), an insulating layer (8) is spliced on the inner wall of the water-resistant layer (7), an armor layer (9) is arranged inside the insulating layer (8), and a cable core (10) is spliced on the inner wall of the armor layer (9.

2. The anti-snapping flame-retardant cable according to claim 1, wherein: the inside of inner protective cover (4) is provided with elasticity protection strip (11), the quantity of elasticity protection strip (11) is three, three the inside of inner protective cover (4) is set up with annular array's form in elasticity protection strip (11).

3. The anti-snapping flame-retardant cable according to claim 1, wherein: a gap is arranged between the inner protective sleeve (4) and the cable core protective sleeve (5), and a flame-retardant filler (12) is arranged in the gap.

4. The anti-snapping flame-retardant cable according to claim 1, wherein: the inner protective sleeve (4) is internally provided with a ground wire (13), and the ground wire (13) is positioned at the circle center of the inner protective sleeve (4).

5. The anti-snapping flame-retardant cable according to claim 1, wherein: the surface of outer protective sheath (1) is provided with upper bracket (14), the surface of outer protective sheath (1) is provided with lower carriage (15), upper bracket (14) pass through screw and lower carriage (15) fixed connection, the quantity of upper bracket (14) and lower carriage (15) is a plurality of, a plurality of upper bracket (14) and lower carriage (15) set up the surface at outer protective sheath (1) with the form of equidistant range.

6. The anti-snapping flame-retardant cable according to claim 1, wherein: the cable core protective sheath (5), the water blocking layer (7), the insulating layer (8), the armor layer (9) and the cable core (10) are three in number, and the cable core protective sheath (5), the water blocking layer (7), the insulating layer (8), the armor layer (9) and the cable core (10) are all arranged inside the inner protective sheath (4) in an annular array mode.

7. The anti-snapping flame-retardant cable according to claim 1, wherein: the quantity of steel wire (6) is eighteen, every the inside of cable core protective sheath (5) all is provided with six steel wire (6), six the steel wire (6) set up the inside at cable core protective sheath (5) with the form of annular array.