CN216487390U - High bending property fire prevention mineral substance insulated cable - Google Patents

Abstract

The utility model discloses a high bending property fire prevention mineral substance insulated cable, including the phase line of the mutual transposition of stranded and be used for the inoxidizing coating of whole cladding stranded phase line, the cross-section of phase line is oval, and each phase line supports in proper order along circumference and presses in the outside at adjacent phase line. The utility model discloses a stranded phase line transposition is in the same place, and on the circumferencial direction, and each phase line is pressed in proper order in the outside of adjacent phase line the utility model discloses when taking place crooked, can produce the effort that matches on the diameter direction between the adjacent phase line, can avoid the phase line to encircle outward, prevent to cause the damage to the inoxidizing coating, great improvement is used the utility model discloses carry out the convenience of electric power construction.

Description

High bending property fire prevention mineral substance insulated cable

Technical Field

The utility model relates to an electric power cable technical field especially relates to a high bending property fire prevention mineral substance insulation cable.

Background

In order to ensure the safety of the cable in the power supply process, a multilayer protective layer is usually arranged outside the cable to prevent the occurrence of power utilization accidents, for example, the utility model with the publication number of CN212750429U discloses a flexible copper sheath inorganic mineral insulation fireproof cable, wherein an inorganic mineral insulation layer 1-1 and a shielding layer 1-2 are arranged outside a stranded wire core of the cable, a fireproof layer 1-3 and a rubber sheath 1-4 are arranged outside the stranded wire core, a cross-shaped bracket 1-5 is arranged in the middle of the stranded wire core to increase the stability of the stranded wire core, and when the cable with the structure is frequently bent in the actual construction process, the stranded wire core is easy to be dislocated, so that the stranded wire core is easy to be outwards arched, and the fireproof layer 1-3 and the rubber sheath 1-4 are easily broken.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to avoid prior art's weak point, provide a high bending property fire prevention mineral substance insulated cable to effectively solve the weak point that exists among the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a high bending property fire prevention mineral substance insulated cable, includes the looks line of stranded each other transposition and is used for the inoxidizing coating of whole cladding stranded looks line, the cross-section of looks line is oval, and each looks line supports in proper order along circumference and presses in the outside at adjacent looks line.

Furthermore, one side of the phase line is pressed against the outer side of the corresponding side of the adjacent phase line.

Furthermore, a supporting structure is arranged in the middle of the stranded phase lines.

Further, the support structure is in a long cylinder shape.

Furthermore, a first limiting part and a second limiting part which are matched with the two sides of the phase line are respectively arranged on the supporting structure.

Furthermore, last connecting portion that is used for fixed first locating part and second locating part that is provided with of bearing structure, be provided with respectively with first overlap joint portion and the second overlap joint portion of the both sides adaptation of phase line on the connecting portion.

Furthermore, the phase line comprises a conductor, and an insulating layer and a shielding layer are sequentially arranged on the outer side of the conductor.

Further, the insulating layer is an inorganic mineral insulating layer.

Furthermore, the protective layer comprises a first rubber layer, a fireproof layer and a second rubber layer which are arranged in sequence.

Further, the fireproof layer is a flexible mica tape.

The above technical scheme of the utility model following beneficial effect has: the utility model discloses a stranded phase line transposition is in the same place, and on the circumferencial direction, and each phase line is pressed in proper order in the outside of adjacent phase line the utility model discloses when taking place to bend, can produce corresponding effort on the diameter direction between the adjacent phase line, can avoid the phase line to encircle outward, prevent to cause the damage to the inoxidizing coating, great improvement is used the utility model discloses carry out the convenience of electric power construction.

Drawings

FIG. 1 is a schematic diagram of a prior art cable construction;

fig. 2 is a schematic structural diagram of a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a second embodiment of the present invention;

fig. 4 is a partially enlarged view of a portion a in fig. 3.

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 provided 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. 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.

As shown in fig. 2-4, the fireproof mineral insulated cable with high bending performance in this embodiment includes a plurality of phase lines 1 twisted together, the outer side of the plurality of phase lines 1 is integrally wrapped with a protective layer 2, specifically, the cross section of the phase line 1 is oval, and each phase line 1 is sequentially pressed against the outer side of the adjacent phase line 1 along the circumferential direction, in this embodiment, each phase line 1 is sequentially pressed along the circumferential direction, when the utility model discloses a bending occurs, a certain acting force can be generated between the adjacent two phase lines 1 in the radial direction to limit the outward arching of the phase line 1, so as to avoid damaging the protective layer 2, more specifically, the length direction of the cross section of the oval phase line 1 is not perpendicular to the diameter direction in which the cross section is located, that is, one side of each phase line 1 extends obliquely towards the outer side, one side of each phase line 1 is respectively pressed against the outer side of the adjacent phase line 1, the side applies a force to the outer side in the direction of the center, thereby avoiding outward arching.

In this embodiment, a supporting structure 3 is disposed in the middle of the multiple phase lines 1, specifically, the supporting structure 3 may be a long cylinder, the supporting structure 3 is located at the center of the multiple phase lines 1, a filling layer 12 is arranged between the supporting structure 3 and the phase line 1 and between the protective layer 2 and the phase line 1, the filling layer 12 has a supporting effect between the two cavity parts, under the action of the filling layer 12, the supporting structure 3 exerts an outward acting force on the phase line 1 at the central position of the multiple phase lines 1, and the protective layer 2 exerts an opposite acting force towards the central position, specifically, the filling layer 12 can be a tensile fiber bundle, in this embodiment, can set up the filling layer in long tube-shape bearing structure 3's inside, perhaps bearing structure 3 sets up to solid long column, increases the utility model discloses center department improves to phase line 1's supporting role the utility model discloses a stability.

In a preferred embodiment, as shown in fig. 3, a supporting structure 3 is provided with a first limiting member and a second limiting member, the first limiting member and the second limiting member are respectively adapted to two sides of the phase line 1, and apply a diametric force to two sides of the phase line 1, so as to further increase the stability of each phase line 1 and avoid the phase line 1 from arching, in this embodiment, a connecting portion 13 is provided on the supporting structure 3, the connecting portion 13 is used for fixing the first limiting member and the second limiting member, specifically, the connecting portion 13 passes through between two adjacent phase lines 1 and is clamped by the two phase lines 1, the first limiting member and the second limiting member are respectively a first overlapping portion 4 and a second overlapping portion 5 adapted to two sides of the phase line 1, the first overlapping portion 4 and the second overlapping portion 5 are respectively located at two sides of the connecting portion 13, the first overlapping portion 4 overlaps one side of the phase line 1, the second overlapping portion 5 overlaps the corresponding side of the adjacent phase line 1, more specifically, because oval cross-section's phase line 1 sets up along cross-sectional length direction slope, first overlap joint portion 4 is taken on one side in the 1 outside of phase line, and second overlap joint portion 5 is taken on one side of 1 inboard of phase line, under the effect of filling layer 12 for first overlap joint portion 4 and second overlap joint portion 5 respectively close laminating on phase line 1, and effort towards central direction is applyed to phase line 1's both sides respectively to first overlap joint portion 4 and second overlap joint portion 5 the utility model discloses when taking place to bend, the effectual 1 outer archs of phase line of avoiding.

Specifically, every share of phase line 1 all includes a conductor 6, and the outside of conductor 6 has set gradually insulating layer 7 and shielding layer 8, and more specifically, shielding layer 8 sets up in the outside of insulating layer 7, and insulating layer 7 can be inorganic mineral insulating layer 7, and shielding layer 8 is metallic shield 8.

Specifically, the protective layer 2 comprises a first rubber layer 9, a fireproof layer 10 and a second rubber layer 11, the fireproof layer 10 is located between the first rubber layer 9 and the second rubber layer 11, the first rubber layer 9 is located on the innermost side and is in contact with the filling layer 12, the first rubber layer 9 and the second rubber layer 11 have a good protection effect, and have a good fixing effect on the fireproof layer 10, and more specifically, the fireproof layer 10 can be a flexible mica tape.

The utility model discloses a theory of operation: the utility model discloses a stranded phase line 1 transposition is in the same place, and one side of each phase line 1 supports in proper order and presses in the outside that adjacent phase line 1 corresponds the side for every phase line 1 applys the inboard effort of orientation to adjacent phase line 1 in proper order, and circumference sets gradually the utility model discloses when taking place the bending, can effectually avoid 1 outer archs of phase line, prevent to cause the damage to inoxidizing coating 2, do benefit to and improve the efficiency of construction, holistic inoxidizing coating 2 in the outside has improved under the effect of flame retardant coating 10 the utility model discloses a fire behavior, insulating layer 7 in the 1 outside of single strand phase line are inorganic mineral insulating layer 7, do benefit to the insulating properties who improves between every phase line 1.

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 (10)

1. The utility model provides a high bending property fire prevention mineral substance insulated cable which characterized in that: the cross section of each phase line is oval, and each phase line is sequentially abutted against the outer side of the adjacent phase line along the circumferential direction.

2. A high bend performance fire-resistant mineral insulated cable according to claim 1, characterized in that: one side of the phase line is pressed against the outer side of the corresponding side of the adjacent phase line.

3. A high bend performance fire-resistant mineral insulated cable according to claim 2, characterized in that: and a supporting structure is arranged in the middle of the stranded phase lines.

4. A high bend performance fire-resistant mineral insulated cable according to claim 3, characterized in that: the support structure is in a long cylinder shape.

5. A high bend performance fire-resistant mineral insulated cable according to claim 3, characterized in that: and the supporting structure is respectively provided with a first limiting part and a second limiting part which are matched with the two sides of the phase line.

6. A high bend performance fire-resistant mineral insulated cable according to claim 5, characterized in that: the supporting structure is provided with a connecting portion used for fixing the first limiting part and the second limiting part, and the connecting portion is provided with a first overlapping portion and a second overlapping portion which are matched with the two sides of the phase line respectively.

7. A high bend performance fire-resistant mineral insulated cable according to claim 1, characterized in that: the phase line comprises a conductor, and an insulating layer and a shielding layer are sequentially arranged on the outer side of the conductor.

8. A high bend performance fire-resistant mineral insulated cable according to claim 7, characterized in that: the insulating layer is an inorganic mineral insulating layer.

9. A high bend performance fire-resistant mineral insulated cable according to claim 1, characterized in that: the protective layer comprises a first rubber layer, a fireproof layer and a second rubber layer which are arranged in sequence.

10. A high bend performance fire-resistant mineral insulated cable according to claim 9, characterized in that: the fireproof layer is a flexible mica tape.

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