CN210006492U - low-smoke halogen-free flame-retardant power cable - Google Patents
low-smoke halogen-free flame-retardant power cable Download PDFInfo
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- CN210006492U CN210006492U CN201921176714.2U CN201921176714U CN210006492U CN 210006492 U CN210006492 U CN 210006492U CN 201921176714 U CN201921176714 U CN 201921176714U CN 210006492 U CN210006492 U CN 210006492U
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- power cable
- protective layer
- cable
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Abstract
The utility model discloses a fire-retardant power cable of low smoke and zero halogen, concretely relates to power cable field, including the heart yearn, heart yearn outside fixedly connected with insulating layer, the heart yearn outside is provided with around the covering, it has the packing to fill around the inside packing of covering, be provided with fire-retardant layer around the covering outside, fire-retardant layer outside fixedly connected with inflation layer, inflation layer outside fixedly connected with waterproof layer, waterproof layer outside fixedly connected with protective layer, the inside fixedly connected with annular lug of protective layer, the protective layer outside is provided with the insulating layer the utility model discloses a pack at the protective layer intussuseption and be equipped with the fine rubber of butyl, can increase the tensile strength of cable, the inside a plurality of annular lugs that are provided with of protective layer, when the cable is crooked to the at utmost, annular lug can extrude each other and form fixed resistance, avoid the excessive bending of cable to.
Description
Technical Field
The utility model relates to a power cable technical field, more specifically say, the utility model relates to an kind low smoke and zero halogen flame retardant power cable.
Background
The power cable is a cable with a thick wire diameter, is three-core or four-core, the interphase insulation is thick, the outer side is protected by a protective layer, the power cable is used as a main line of a three-phase industrial power supply or a single-phase civil power supply for a power supply system, and the application of the power cable is more and more along with the development of the industry in China.
However, the power cables on the market still have more defects in practical use, such as easy mechanical damage of the cables in use, slight mechanical damage, failure caused by the mechanical damage, failure development after several months or even 1-2 years of use, mechanical damage mainly caused by external force damage caused by improper operation during installation, such as pulling of the cables due to excessive mechanical tension and damage of the cables due to excessive bending of the cables.
Therefore, it is necessary to invent low smoke zero halogen flame retardant power cable to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to overcome prior art's above-mentioned defect, the embodiment of the utility model provides kinds of low smoke and zero halogen fire-retardant power cable, through be filled with nitrile rubber in the protective layer intussuseption, can improve the tensile strength of cable, avoid causing the damage to the cable because the pulling force is too big when the installation cable, the protective layer is inside still to be provided with a plurality of annular lugs, when the cable is crooked to the at utmost, annular lug can extrude each other and form fixed resistance, avoid the cable overbending to cause the injury to its protective layer, protective layer bottom still is provided with the inflation layer in addition, the inflation layer can play fine cushioning effect when the inside thermal expansion of cable, thereby cause too big pressure to the protective layer and form the crackle when avoiding thermal expansion, can greatly reduced cable appearance mechanical damage's probability through mutually supporting of protective layer and inflation layer, thereby guarantee inside heart yearn normal work.
In order to achieve the purpose, the utility model provides a following technical scheme low smoke and zero halogen flame retardant power cable, including the heart yearn, heart yearn outside fixedly connected with insulating layer, the heart yearn outside is provided with around the covering, it has the filler strip to fill around the inside packing of covering, be provided with fire-retardant layer around the covering outside, fire-retardant layer outside fixedly connected with inflation layer, inflation layer outside fixedly connected with waterproof layer, waterproof layer outside fixedly connected with protective layer, the inside fixedly connected with annular lug of protective layer, the protective layer outside is provided with the insulating layer.
In preferred embodiments, the insulation layer is made of an asbestos material.
In preferred embodiments, the number of the annular projections is set to be plural, the plural annular projections are uniformly filled inside the protective layer, and the annular projections are made of an aluminum matrix composite.
In preferred embodiments, the protective layer filler is made of a nitrile rubber material.
In preferred embodiments, the bottom of the protective layer is fixedly connected with a plurality of bumps, the bumps are uniformly arranged on the bottom surface of the protective layer, the surface of the waterproof layer is provided with a plurality of grooves, the bumps are matched with the grooves, and the waterproof layer is made of polyacrylate material.
In preferred embodiments, the expansion layer is made of ethylene propylene diene monomer material.
In preferred embodiments, the flame retardant layer is internally filled with a halogen-free flame retardant.
In preferred embodiments, the insulating layer is made of a polyethylene material.
In preferred embodiments, the adhesive is filled between the protection layer and the waterproof layer, the adhesive is filled between the waterproof layer and the expansion layer, and the adhesive is filled between the expansion layer and the flame retardant layer.
The utility model discloses a technological effect and advantage:
1. the utility model discloses a packing at the protective layer and being equipped with butadiene acrylonitrile rubber, can improve the tensile strength of cable, avoid causing the damage to the cable because the pulling force is too big when installing the cable, the protective layer inside still is provided with a plurality of annular lugs, when the cable bends to the maximum extent, annular lug can extrude each other and form definite resistance, avoid the cable overbend to cause the injury to its protective layer, protective layer bottom still is provided with the inflation layer in addition, the inflation layer can play fine cushioning effect when the cable inside is heated the inflation, cause too big pressure to the protective layer when avoiding being heated the inflation and thus form the crackle, can greatly reduce the probability that the cable appears mechanical damage through the mutual cooperation of protective layer and inflation layer, thereby guarantee that inside heart yearn normally works;
2. through being provided with the waterproof layer bottom the protective layer, can avoid moisture and rainwater to enter into the cable when the crack appears on the cable surface inside, the cooperation of lug and recess not only can make protective layer and waterproof layer complex inseparabler but also can increase the surface area of waterproof layer, play better water-proof effects, avoid causing the normal use that corrodes the influence cable to inside heart yearn, the halogen-free fire retardant that the inside fire-retardant layer of cable was filled can guarantee can not produce harmful gas when burning, the inside filling strip of fire-retardant layer can protect the heart yearn can not wear and tear.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a left side sectional view of the present invention.
Fig. 3 is a schematic diagram of the waterproof layer structure of the present invention.
Fig. 4 is a sectional view of the protective layer of the present invention.
Fig. 5 is an overall appearance diagram of the present invention.
Fig. 6 is an enlarged view of the a-portion structure of the present invention.
The reference signs are: 1 heart yearn, 2 insulating layers, 3 around covering, 4 filling strips, 5 fire-retardant layers, 6 inflation layers, 7 waterproof layers, 8 protective layers, 9 annular lug, 10 insulating layer, 11 lugs, 12 recesses.
Detailed Description
The technical solution 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 , but not all embodiments.
According to kinds of low-smoke halogen-free flame-retardant power cables shown in fig. 1, 2, 4 and 5, the power cable comprises a core wire 1, an insulating layer 2 is fixedly connected to the outer side of the core wire 1, a wrapping layer 3 is arranged on the outer side of the core wire 1, filling strips 4 are filled in the wrapping layer 3, a flame-retardant layer 5 is arranged on the outer side of the wrapping layer 3, an expansion layer 6 is fixedly connected to the outer side of the flame-retardant layer 5, a waterproof layer 7 is fixedly connected to the outer side of the expansion layer 6, a protective layer 8 is fixedly connected to the outer side of the waterproof layer 7, an annular bump 9 is fixedly connected to;
the heat insulation layer 10 is made of asbestos material;
the number of the annular bumps 9 is multiple, the annular bumps 9 are uniformly filled in the protective layer 8, and the annular bumps 9 are made of an aluminum-based composite material;
the filler of the protective layer 8 is made of a butadiene-acrylonitrile rubber material;
the expansion layer 6 is made of ethylene propylene diene monomer;
the halogen-free flame retardant is filled in the flame-retardant layer 5;
adhesive is filled between the protective layer 8 and the waterproof layer 7, adhesive is filled between the waterproof layer 7 and the expansion layer 6, and adhesive is filled between the expansion layer 6 and the flame retardant layer 5;
the cable comprises a protective layer 8 arranged outside a cable, a plurality of annular bumps 9 are further arranged inside the protective layer 8, the annular bumps 9 are made of aluminum-based composite materials and are high in hardness, when the cable is bent to the maximum degree, the annular bumps 9 can be mutually extruded to form -shaped resistance, the protective layer 8 is prevented from being damaged by excessive bending of the cable, a heat insulation layer 10 is arranged on the outermost side of the cable, the temperature inside the cable can be guaranteed not to be too high, an expansion layer 6 is further arranged at the bottom of the protective layer 8, a ternary ethylene material filled inside the expansion layer 6 has good compressibility, the expansion layer 6 can play a good buffering role when the cable is heated to expand, excessive pressure on the protective layer 8 is prevented from being caused by excessive bending to form cracks, the probability of mechanical damage of the cable can be greatly reduced through mutual matching of the protective layer 8 and the expansion layer 6, and normal work of an inner core wire 1 is guaranteed.
According to the kinds of low-smoke halogen-free flame-retardant power cables shown in fig. 1, 2, 3 and 6, the bottom of the protective layer 8 is fixedly connected with a plurality of bumps 11, the plurality of bumps 11 are uniformly arranged on the bottom surface of the protective layer 8, the surface of the waterproof layer 7 is provided with a plurality of grooves 12, the bumps 11 are matched with the grooves 12, and the waterproof layer 7 is made of polyacrylate material;
the insulating layer 2 is made of polyethylene material;
the implementation mode is specifically as follows: through being provided with waterproof layer 7 in 8 bottoms of protective layer, can avoid moisture and rainwater to enter into inside the cable when the crack appears on the cable surface, the cooperation of lug 11 and recess 12 not only can make protective layer 8 and waterproof layer 7 complex inseparabler but also can increase waterproof layer 7's surface area, play better water-proof effects, avoid leading to the fact the normal use that corrodes the influence cable to inside heart yearn 1, the halogen-free fire retardant that cable inside flame retardant coating 5 was filled can play fine flame retardant efficiency, and also can not produce harmful gas when burning, the inside filling strip 4 of flame retardant coating 5 can be filled the gap between heart yearn 1, protection heart yearn 1 can not wear and tear.
The utility model discloses the theory of operation:
referring to the attached drawings 1, 2, 4 and 5 of the specification, the tensile strength of the cable can be improved by filling nitrile rubber in the protective layer 8, the plurality of annular bumps 9 are further arranged inside the protective layer 8, the annular bumps 9 are made of aluminum-based composite materials and have high hardness, when the cable is bent to the maximum degree, the annular bumps 9 can be mutually extruded to form -determined resistance, the heat insulation layer 10 is arranged on the outermost side of the cable, the internal temperature of the cable can be guaranteed not to be too high, in addition, the expansion layer 6 is further arranged at the bottom of the protective layer 8, the ternary ethylene material filled inside the expansion layer 6 has good compressibility, and cracks are prevented from being formed due to too high pressure on the protective layer 8 when the ternary ethylene material;
refer to description attached figure 1, 2, 3 and 6, through be provided with waterproof layer 7 in 8 bottoms of protective layer, can avoid moisture and rainwater to enter into the cable when the cable surface crack appears, the cooperation of lug 11 and recess 12 not only can make protective layer 8 and waterproof layer 7 complex inseparabler but also can increase waterproof layer 7's surface area, the halogen-free fire retardant that cable inside fire-retardant layer 5 was filled can play fine flame retardant efficiency, 5 inside filling strip 4 of fire-retardant layer can be filled the gap between heart yearn 1, protection heart yearn 1 can not wear and tear.
First, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood as meaning either mechanically or electrically connected, or communication between two elements, or directly connected, and "up," "down," "left," and "right" are used only to indicate relative positional relationships, and when the absolute position of the object to be described changes, the relative positional relationships may change;
secondly, in the drawings of the disclosed embodiment of the invention, only the structures related to the disclosed embodiment are related, other structures can refer to common design, and under the condition of no conflict, the disclosed embodiment can be combined with embodiment and different embodiments;
and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
- The utility model provides a fire-retardant power cable of kind of low smoke and zero halogen, including heart yearn (1), its characterized in that heart yearn (1) outside fixedly connected with insulating layer (2), heart yearn (1) outside is provided with around covering (3), it has filler strip (4) to fill around covering (3) inside, be provided with fire-retardant layer (5) around covering (3) outside, fire-retardant layer (5) outside fixedly connected with inflation layer (6), inflation layer (6) outside fixedly connected with waterproof layer (7), waterproof layer (7) outside fixedly connected with protective layer (8), the inside fixedly connected with annular convex block (9) of protective layer (8), the protective layer (8) outside is provided with insulating layer (10).
- 2. kinds of low smoke zero halogen flame retardant power cable according to claim 1, characterized in that the thermal insulation layer (10) is made of asbestos material.
- 3. kinds of low smoke zero halogen flame retardant power cable according to claim 1, characterized in that the number of the said annular projections (9) is set to be a plurality, a plurality of the said annular projections (9) are filled in the protection layer (8) evenly, the said annular projections (9) are made of aluminum matrix composite.
- 4. The kinds of low-smoke zero-halogen flame-retardant power cable according to claim 1, wherein the filler of the protective layer (8) is made of a nitrile rubber material.
- 5. kinds of low smoke zero halogen flame retardant power cable according to claim 1, characterized in that, the bottom of the protection layer (8) is fixedly connected with a plurality of projections (11), the projections (11) are evenly arranged on the bottom surface of the protection layer (8), the surface of the waterproof layer (7) is provided with a plurality of grooves (12), the projections (11) are matched with the grooves (12), and the waterproof layer (7) is made of polyacrylate material.
- 6. kinds of low smoke zero halogen flame retardant power cable according to claim 1, characterized in that, the expansion layer (6) is made of ethylene propylene diene monomer material.
- 7. The kinds of low-smoke zero-halogen flame-retardant power cables as claimed in claim 1, wherein the flame-retardant layer (5) is filled with a halogen-free flame retardant.
- 8. kinds of low smoke zero halogen flame retardant power cable according to claim 1, characterized in that, the insulation layer (2) is made of polyethylene material.
- 9. kinds of low smoke zero halogen flame retardant power cable according to claim 1, characterized in that, the adhesive is filled between the protection layer (8) and the waterproof layer (7), the adhesive is filled between the waterproof layer (7) and the expansion layer (6), and the adhesive is filled between the expansion layer (6) and the flame retardant layer (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921176714.2U CN210006492U (en) | 2019-07-25 | 2019-07-25 | low-smoke halogen-free flame-retardant power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921176714.2U CN210006492U (en) | 2019-07-25 | 2019-07-25 | low-smoke halogen-free flame-retardant power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210006492U true CN210006492U (en) | 2020-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921176714.2U Expired - Fee Related CN210006492U (en) | 2019-07-25 | 2019-07-25 | low-smoke halogen-free flame-retardant power cable |
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| Country | Link |
|---|---|
| CN (1) | CN210006492U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115547554A (en) * | 2022-10-31 | 2022-12-30 | 深圳市宏亚电子有限公司 | Special cable for underwater robot |
-
2019
- 2019-07-25 CN CN201921176714.2U patent/CN210006492U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115547554A (en) * | 2022-10-31 | 2022-12-30 | 深圳市宏亚电子有限公司 | Special cable for underwater robot |
| CN115547554B (en) * | 2022-10-31 | 2024-06-07 | 深圳市宏亚电子有限公司 | Special cable for underwater robot |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200131 |