CN212461238U

CN212461238U - Cross-linked polyethylene insulation low-smoke zero-halogen variable frequency power cable

Info

Publication number: CN212461238U
Application number: CN202021600488.9U
Authority: CN
Inventors: 张本寿; 昌加兵; 钱家贵; 张敏; 后学铸; 汪国明
Original assignee: ANHUI HANGTIAN CABLE GROUP CO LTD
Current assignee: ANHUI HANGTIAN CABLE GROUP CO LTD
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2021-02-02
Anticipated expiration: 2030-08-04

Abstract

The utility model provides a cross-linked polyethylene insulation low smoke and zero halogen frequency conversion power cable, including thread insulation core, zero line insulation core, around band, shielding layer, high strength filling layer and oversheath layer, be equipped with the filling layer around between band and thread insulation core and the zero line insulation core, be provided with the locating part in the filling layer, the one side and the zero line insulation core contact of locating part, the another side inlays and is equipped with the recess, and peel off the line cladding in this recess, the shielding layer cladding is in the outside around the band, and high strength filling layer and oversheath layer set gradually in the outside of shielding layer; the utility model provides a high-strength filling layer, which can greatly reduce the acting force in the cable body through two elastic sleeves when the cable is applied with the external acting force in the using process, thereby ensuring the service life of the whole body; in addition, the cable stripping work is convenient to carry out through the stripping line.

Description

Cross-linked polyethylene insulation low-smoke zero-halogen variable frequency power cable

Technical Field

The utility model relates to the technical field of cables, indicate a cross-linked polyethylene insulation low smoke and zero halogen frequency conversion power cable especially.

Background

The structure of the frequency conversion cable comprises three main line insulated wires and three zero line insulated wires, wherein an inner winding layer, a copper tape layer, an outer winding layer and an outer sheath layer are sequentially arranged outside the main line insulated wires and the zero line insulated wires to form a 3+3 wire core structure, so that the cable has stronger voltage impact resistance, can bear pulse voltage during high-speed frequent frequency conversion, and plays a good role in protecting frequency conversion electrical appliances. The frequency conversion technology is a technical revolution in the electromechanical field in recent years, the application of a frequency conversion speed regulation system is more and more popular, and correspondingly, higher requirements are also put forward on a frequency conversion cable so as to avoid interference in operation. However, the strength of the existing frequency conversion cable is poor, thereby affecting the service life.

Therefore, the utility model provides an insulating low smoke and zero halogen frequency conversion power cable of crosslinked polyethylene to solve the problem that the above-mentioned exists.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art's shortcoming, provide an insulating low smoke and zero halogen frequency conversion power cable of crosslinked polyethylene.

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides an insulating low smoke and zero halogen frequency conversion power cable of crosslinked polyethylene, includes three tangent thread insulation core each other, with two adjacent tangent zero line insulation core of thread insulation core, around band, shielding layer, high strength filling layer and oversheath layer, be equipped with the filling layer around between band and thread insulation core and the zero line insulation core, be provided with the locating part in the filling layer, the one side and the contact of zero line insulation core of locating part, the another side inlays and is equipped with the recess, peels off the line cladding in this recess, the shielding layer cladding is in the outside around the band, and high strength filling layer and oversheath layer set gradually in the outside of shielding layer.

As an optimal technical scheme, a plurality of packing of equipartition in the high strength packing layer, the packing includes two elastic sleeves and a strengthening rib, two the one end coincidence of elastic sleeve, the logical groove that cup joints the strengthening rib is seted up to the part of this coincidence, and connects through connecting the rope between two adjacent packing.

As a preferred technical scheme of the utility model, the thread insulation core includes thread insulating layer and thread conductor, the zero line insulation core includes zero line insulating layer and zero line conductor, thread insulating layer and zero line insulating layer all are made by crosslinked polyethylene insulating material.

As a preferred technical scheme of the utility model, the oversheath layer is made by fire-retardant polyolefin material.

As an optimized technical scheme, a plurality of archs of outside equipartition of oversheath layer scribble the temperature sensing dope layer in this arch.

As an optimal technical scheme, form around the package for the fire-retardant area of glass fiber overlaps around the band, should be around the band take the lid rate to be 25% -50%.

As an optimized technical scheme of the utility model, the shielding layer is that the density is not less than the shielding layer of 85% copper wire weaving form.

The utility model discloses the beneficial effect who reaches is:

1. the utility model provides a pair of insulating low smoke and zero halogen frequency conversion power cable of crosslinked polyethylene, through the high strength filling layer that sets up to a plurality of packing of equipartition in the high strength filling layer, when making the cable receive external effort at the in-process that uses, can be through the effort that this internal received of two elastic sleeve greatly reduced cables, thereby can guarantee holistic life.

2. The utility model provides a pair of insulating low smoke and zero halogen frequency conversion power cable of crosslinked polyethylene peels off the line through what set up, makes things convenient for going on of cable stripping work.

The present invention will be described in more detail with reference to the accompanying drawings and examples.

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 view of the overall structure of the present invention;

fig. 2 is a schematic view of a limiting member of the present invention;

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

reference numbers in the figures: 1. wrapping a tape; 2. a shielding layer; 3. a high-strength filler layer; 4. an outer jacket layer; 5. a filling layer; 6. a limiting member; 7. a groove; 8. stripping the wire; 9. an elastic sleeve; 10. reinforcing ribs; 11. connecting ropes; 12. a main line insulating layer; 13. a main line conductor; 14. a zero line insulating layer; 15. a neutral conductor; 16. and (4) protruding.

Detailed Description

The terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like in the specification indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" 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 "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. 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 fig. 1-3, the utility model provides a cross-linked polyethylene insulated low-smoke zero-halogen variable frequency power cable, including three tangent thread insulated wire cores, three zero line insulated wire cores tangent with two adjacent thread insulated wire cores, a wrapping tape 1, a shielding layer 2, a high-strength filling layer 3 and an outer sheath layer 4, a filling layer 5 is arranged between the wrapping tape 1 and the thread insulated wire cores and between the zero line insulated wire cores, and fillers are appropriately filled in the cabling, so that the appearance of the product is compact and round; a limiting piece 6 is arranged in the filling layer 5, one surface of the limiting piece 6 is in contact with the zero line insulation wire core, a groove 7 is embedded in the other surface of the limiting piece 6, and a stripping wire 8 is wrapped in the groove 7, so that the cable stripping work is facilitated; shielding layer 2 cladding is in the outside around band 1, and high strength filling layer 3 and oversheath layer 4 set gradually in the outside of shielding layer 2.

Further, a plurality of filling members of equipartition in the high strength filling layer 3, the filling member includes two elastic sleeves 9 and a strengthening rib 10, two the one end coincidence of elastic sleeve 9, the logical groove of cup jointing strengthening rib 10 is seted up to the part of this coincidence, and connects through connecting rope 11 between two adjacent filling members, and when the cable received external effort at the in-process that uses, can be through the effort that receives in two elastic sleeves 9 greatly reduced cable bodies to can guarantee holistic life.

Furthermore, the main line insulated wire core comprises a main line insulated layer 12 and a main line conductor 13, the zero line insulated wire core comprises a zero line insulated layer 14 and a zero line conductor 15, and the main line insulated layer 12 and the zero line insulated layer 14 are both made of cross-linked polyethylene insulated materials.

Furthermore, the outer sheath layer 4 is made of flame-retardant polyolefin material, so that the heat dissipation effect of the cable can be improved.

Furthermore, a plurality of bulges 16 are uniformly distributed outside the outer sheath layer 4, and a thermosensitive paint layer is coated on the bulges 16.

Further, the lapping tape 1 is formed by lapping and overlapping glass fiber flame retardant tapes, and the lapping rate of the lapping tape 1 is 25% -50%.

Further, the shielding layer 2 is a shielding layer in a copper wire weaving form with the density not lower than 85%.

The above embodiments are merely to describe the preferred embodiments of the present invention, and are not to limit the scope of the present invention, and various modifications and improvements made by the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.

The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.

Claims

1. The utility model provides an insulating low smoke and zero halogen frequency conversion power cable of crosslinked polyethylene, its characterized in that includes three tangent thread insulation core each other, with two adjacent tangent zero line insulation core of thread insulation core, around band (1), shielding layer (2), high strength filling layer (3) and oversheath layer (4), be equipped with filling layer (5) around band (1) and thread insulation core and zero line insulation core between, be provided with locating part (6) in filling layer (5), the one side and the contact of zero line insulation core of locating part (6), the another side inlays and is equipped with recess (7), peels off line (8) cladding in this recess (7), shielding layer (2) cladding is in the outside of band (1), and high strength filling layer (3) and oversheath layer (4) set gradually the outside at shielding layer (2).

2. The insulated low-smoke halogen-free variable-frequency power cable of crosslinked polyethylene according to claim 1, characterized in that a plurality of fillers are uniformly distributed in the high-strength filler layer (3), each filler comprises two elastic sleeves (9) and a reinforcing rib (10), one ends of the two elastic sleeves (9) are overlapped, a through groove for sleeving the reinforcing rib (10) is formed in the overlapped part, and the two adjacent fillers are connected through a connecting rope (11).

3. A cross-linked polyethylene insulated low-smoke zero-halogen frequency conversion power cable according to claim 1, characterized in that, the main line insulated wire core includes a main line insulated layer (12) and a main line conductor (13), the zero line insulated wire core includes a zero line insulated layer (14) and a zero line conductor (15), the main line insulated layer (12) and the zero line insulated layer (14) are both made of cross-linked polyethylene insulated material.

4. A cross-linked polyethylene insulated low smoke zero halogen frequency conversion power cable according to claim 1, characterized in that the outer sheath layer (4) is made of flame retardant polyolefin material.

5. The cross-linked polyethylene insulated low-smoke zero-halogen variable frequency power cable according to claim 1, characterized in that a plurality of bulges (16) are uniformly distributed outside the outer sheath layer (4), and a heat sensitive coating layer is coated on the bulges (16).

6. The cross-linked polyethylene insulated low-smoke halogen-free variable frequency power cable according to claim 1, characterized in that the wrapping tape (1) is formed by overlapping and wrapping glass fiber flame retardant tapes, and the covering rate of the wrapping tape (1) is 25% -50%.

7. The cross-linked polyethylene insulated low-smoke zero-halogen variable frequency power cable according to claim 1, characterized in that the shielding layer (2) is a shielding layer in the form of copper wire braid with density not less than 85%.