CN216311389U - Halogen-free low-smoke flame-retardant polyolefin insulation and sheath fire-resistant power cable - Google Patents
Halogen-free low-smoke flame-retardant polyolefin insulation and sheath fire-resistant power cable Download PDFInfo
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- CN216311389U CN216311389U CN202121855923.7U CN202121855923U CN216311389U CN 216311389 U CN216311389 U CN 216311389U CN 202121855923 U CN202121855923 U CN 202121855923U CN 216311389 U CN216311389 U CN 216311389U
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Abstract
The utility model provides a halogen-free low-smoke flame-retardant polyolefin insulation and sheath fire-resistant power cable which comprises an insulation wire core, a protection reinforcing plate, a wrapping layer and an outer sheath, wherein the insulation wire core is positioned in a wire core installation cavity which is separated by a partition plate in the protection reinforcing plate, an arc convex edge and an arc concave edge are arranged at intervals outside the protection reinforcing plate, pressure-resistant grooves are formed in two ends of the arc convex edge, a pressure-resistant ball is embedded in the pressure-resistant grooves and is tangent to the wrapping layer, a plurality of elastic rubber blocks are arranged between the two pressure-resistant grooves, an elastic cavity is formed in the middle of each elastic rubber block, each elastic ball is embedded in the elastic cavity and is tangent to the wrapping layer, flame-retardant filler is filled between each arc concave edge and the wrapping layer, the outer sheath is arranged on the periphery of the wrapping layer and consists of an outer sheath, an inner sheath and a reinforcing strip, the outer sheath and the inner sheath are correspondingly clamped, and the outer side wall of the inner protection layer is provided with a trapezoidal buffer groove for the movement of the reinforcing strip.
Description
Technical Field
The utility model relates to the technical field of electric wires and cables, in particular to a halogen-free low-smoke flame-retardant polyolefin insulation and sheath flame-retardant power cable.
Background
Cable is a generic term for optical cables, electrical cables, and the like. The cable has many applications, is mainly used for controlling installation, connecting equipment, transmitting power and other multiple functions, is a common and indispensable object in daily life, and needs to be installed carefully because the cable is electrified.
The traditional cable has poor abrasion resistance and extrusion resistance, and the use of the cable is influenced; in addition, the cable has poor fire resistance, and in case of fire, the cable generates a large amount of smoke and toxic corrosive gas, which hinders the development of fire fighting work.
Therefore, the utility model provides a halogen-free low-smoke flame-retardant polyolefin insulation and sheath fire-resistant power cable to solve the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a halogen-free low-smoke flame-retardant polyolefin insulation and sheath fire-resistant power cable.
In order to solve the technical problems, the utility model provides the following technical scheme: a halogen-free low-smoke flame-retardant polyolefin insulation and sheath fire-resistant power cable comprises an insulation wire core, a protection reinforcing plate, a wrapping layer and an outer sheath, wherein the insulation wire core is positioned in a wire core installation cavity separated by a partition plate in the protection reinforcing plate, so that the insulation wire core has an excellent protection effect on the insulation wire core, and the insulation wire core is prevented from being broken under the conditions of pulling and trampling of the cable; the protection reinforcing plate is characterized in that an arc-shaped convex edge and an arc-shaped concave edge are arranged outside the protection reinforcing plate at intervals, pressure-resistant grooves are formed in two ends of the arc-shaped convex edge, pressure-resistant balls are embedded in the pressure-resistant grooves and are tangent to the belting layer, a plurality of elastic rubber blocks are arranged between the two pressure-resistant grooves, an elastic cavity is formed in the middle of each elastic rubber block, and each elastic ball is embedded in the elastic cavity and is tangent to the belting layer, so that good extrusion resistance is achieved, and the compression resistance of the cable is improved; the cable is characterized in that flame-retardant filler is filled between the arc-shaped concave edge and the belting layer, an outer sheath is arranged on the periphery of the belting layer and consists of an outer sheath, an inner sheath and reinforcing strips, the outer sheath and the inner sheath are correspondingly clamped, a trapezoidal buffer groove for the movement of the reinforcing strips is formed in the outer side wall of the inner sheath, and the reinforcing strips and the trapezoidal buffer groove play a role in buffering when the cable is extruded.
As a preferred technical solution of the present invention, the insulated wire core includes a conductor, and a fire-resistant layer and an insulating layer are sequentially coated outside the conductor.
As a preferable technical scheme of the utility model, the compression-resistant ball is internally provided with the extension spring, so that the elastic extension amount of the compression-resistant ball is increased.
As a preferable technical scheme, inner grooves and inner bulges are arranged on the inner side wall of the outer protection layer at intervals, outer bulges and outer grooves are arranged on the outer side wall of the inner protection layer at positions corresponding to the inner grooves and the inner bulges, and the trapezoidal buffer groove is formed in the middle of the inner bulges, so that a reinforcing bar can be well installed, and the wear resistance and the extrusion resistance of the cable are enhanced.
As a preferable technical scheme of the utility model, the insulating layer is made of halogen-free low-smoke flame-retardant cross-linked polyolefin insulating material, does not generate corrosive harmful gas during combustion, has extremely low smoke generation amount, and can control the disasters and losses caused by cable fire accidents to the minimum, namely, solve the so-called 'secondary disasters' caused by cable combustion.
As a preferable technical scheme, the fire-resistant layer is made of mica tapes and has good fire resistance.
As a preferred technical scheme of the utility model, the outer sheath is made of halogen-free low-smoke flame-retardant polyolefin sheath material, does not generate corrosive harmful gas during combustion, has extremely small smoke quantity, can control the disasters and the losses caused by cable fire accidents to the minimum, and solves the so-called 'secondary disasters' caused by cable combustion.
The utility model has the following beneficial effects: according to the halogen-free low-smoke flame-retardant polyolefin insulation and sheath fire-resistant power cable, the arranged compression-resistant balls, the elastic rubber blocks, the elastic balls, the reinforcing strips and the trapezoidal buffer grooves play a role in buffering when the cable is extruded, so that the cable cores can be effectively prevented from being broken and the like when being bent and extruded, and the compression resistance of the cable can be improved; through the protection reinforcing plate who sets up again, can bear the outside impact pressure of flame retarded cable body, protect the insulated wire heart yearn of the inside sinle silk installation intracavity of protection reinforcing plate, avoid it because of the pressure fracture, be favorable to improving the life of cable.
The utility model will be explained in more detail below with reference to the drawings and examples.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.
In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a protective reinforcing plate structure according to the present invention;
FIG. 3 is a schematic view of the outer sheath of the present invention;
FIG. 4 is an enlarged view of a in FIG. 2;
reference numbers in the figures: 1. a protective reinforcing plate; 2. a belting layer; 3. an outer sheath; 4. a partition plate; 5. a wire core installation cavity; 6. a pressure-resistant groove; 7. a compression ball; 8. an elastic rubber block; 9. an elastic cavity; 10. an elastic ball; 11. flame-retardant filler; 12. an outer jacket; 13. an inner protective layer; 14. a reinforcing strip; 15. a trapezoidal buffer tank; 16. a conductor; 17. a refractory layer; 18. an insulating layer.
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 in describing and simplifying the description, but do not indicate or imply that the referred device or element 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, such as "connected," which may be fixedly connected, 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 meanings 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. 1-4, the halogen-free low-smoke flame-retardant polyolefin insulation and sheath fire-resistant power cable provided by the utility model comprises an insulation wire core, a protection reinforcing plate 1, a belting layer 2 and an outer sheath 3, wherein the insulation wire core is positioned in a wire core installation cavity 5 separated by a partition plate 4 in the protection reinforcing plate 1, so that the insulation wire core has an excellent protection effect on the insulation wire core, and the insulation wire core is prevented from being broken under the conditions of pulling and trampling of the cable; the protection reinforcing plate comprises a protection reinforcing plate 1 and is characterized in that arc-shaped convex edges and arc-shaped concave edges are arranged at intervals outside the protection reinforcing plate 1, pressure-resistant grooves 6 are formed in two ends of each arc-shaped convex edge, pressure-resistant balls 7 are embedded in the pressure-resistant grooves 6 and are tangent to a belting layer 2, a plurality of elastic rubber blocks 8 are arranged between the two pressure-resistant grooves 6, elastic cavities 9 are formed in the middle parts of the elastic rubber blocks 8, and elastic balls 10 are embedded in the elastic cavities 9 and are tangent to the belting layer 2, so that good extrusion resistance is achieved, and the compression resistance of cables is improved; the cable is characterized in that flame-retardant filler 11 is filled between the arc-shaped concave edge and the belting layer 2, an outer sheath 3 is arranged on the periphery of the belting layer 2, the outer sheath 3 consists of an outer sheath 12, an inner sheath 13 and reinforcing strips 14, the outer sheath 12 and the inner sheath 13 are correspondingly clamped, trapezoidal buffer grooves 15 for the reinforcing strips 14 to move are formed in the outer side wall of the inner sheath 13, and the reinforcing strips 14 and the trapezoidal buffer grooves 15 play a role in buffering when the cable is extruded.
Further, the insulated wire core comprises a conductor 16, and a fire-resistant layer 17 and an insulating layer 18 are sequentially coated outside the conductor 16.
Furthermore, a telescopic spring 19 is arranged in the pressure-resisting ball 7, so that the elastic expansion amount of the pressure-resisting ball 7 is increased.
Furthermore, the inside wall interval of outer jacket 12 is equipped with inner groovy and interior arch, the corresponding inner groovy of the lateral wall of inner sheath 13 and interior bellied position department are equipped with outer arch and outer recess, including trapezoidal buffer slot 15 is seted up, bellied centre, installation reinforcing bar 14 that can be fine, the stand wear and tear of reinforcing cable, resistant extrusion performance.
Furthermore, the insulating layer 18 is made of halogen-free low-smoke flame-retardant cross-linked polyolefin insulating material, so that corrosive harmful gas is not generated during combustion, the smoke quantity is extremely small, and the disasters and the losses caused by cable fire accidents can be controlled to the minimum, namely the so-called 'secondary disasters' caused by cable combustion are solved.
Furthermore, the fire-resistant layer 17 is made of mica tapes, and has good fire resistance.
Furthermore, the outer sheath 3 is made of halogen-free low-smoke flame-retardant polyolefin sheath material, does not generate corrosive harmful gas during combustion, has extremely low smoke generation amount, and can control the disasters and losses caused by cable fire accidents to the minimum, namely, the so-called 'secondary disasters' caused by cable combustion are solved.
The above examples are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
Claims (7)
1. A halogen-free low-smoke flame-retardant polyolefin insulation and sheath fire-resistant power cable is characterized by comprising an insulation wire core, a protection reinforcing plate (1), a wrapping layer (2) and an outer sheath (3), wherein the insulation wire core is positioned in a wire core installation cavity (5) separated by a partition plate (4) in the protection reinforcing plate (1), an arc convex edge and an arc concave edge are arranged at the outer interval of the protection reinforcing plate (1), pressure-resistant grooves (6) are formed at the two ends of the arc convex edge, pressure-resistant balls (7) are embedded in the pressure-resistant grooves (6) and tangent to the wrapping layer (2), a plurality of elastic rubber blocks (8) are arranged between the pressure-resistant grooves (6), an elastic cavity (9) is formed in the middle of each elastic rubber block (8), each elastic ball (10) is embedded in the corresponding elastic cavity (9) and tangent to the wrapping layer (2), and flame-retardant filler (11) is filled between each arc concave edge and the wrapping layer (2), the periphery of belting layer (2) sets up oversheath (3), oversheath (3) comprise outer jacket (12), interior sheath (13) and reinforcing bar (14), outer jacket (12) and interior sheath (13) correspond the joint, and offer on the lateral wall of interior sheath (13) and supply trapezoidal dashpot (15) that reinforcing bar (14) moved.
2. The halogen-free low-smoke flame-retardant polyolefin insulation and sheath fire-resistant power cable according to claim 1, wherein the insulation core comprises a conductor (16), and a fire-resistant layer (17) and an insulation layer (18) are sequentially coated outside the conductor (16).
3. The halogen-free low-smoke flame-retardant polyolefin insulation and sheath fire-resistant power cable according to claim 1, characterized in that a telescopic spring (19) is installed in the compression-resistant ball (7).
4. The halogen-free low-smoke flame-retardant polyolefin insulation and sheath fire-resistant power cable according to claim 1, characterized in that inner grooves and inner protrusions are arranged at intervals on the inner side wall of the outer sheath (12), outer protrusions and outer grooves are arranged at positions, corresponding to the inner grooves and the inner protrusions, on the outer side wall of the inner sheath (13), and the trapezoidal buffer groove (15) is formed in the middle of the inner protrusions.
5. The halogen-free low-smoke flame-retardant polyolefin insulation and sheath fire-resistant power cable according to claim 2, characterized in that the insulation layer (18) is made of halogen-free low-smoke flame-retardant cross-linked polyolefin insulation material.
6. The halogen-free low-smoke flame-retardant polyolefin insulation and sheath fire-resistant power cable according to claim 2, wherein the fire-resistant layer (17) is made of mica tape.
7. The halogen-free low-smoke flame-retardant polyolefin insulation and sheath fire-resistant power cable according to claim 1, characterized in that the outer sheath (3) is made of a halogen-free low-smoke flame-retardant polyolefin sheath material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121855923.7U CN216311389U (en) | 2021-08-10 | 2021-08-10 | Halogen-free low-smoke flame-retardant polyolefin insulation and sheath fire-resistant power cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121855923.7U CN216311389U (en) | 2021-08-10 | 2021-08-10 | Halogen-free low-smoke flame-retardant polyolefin insulation and sheath fire-resistant power cable |
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| CN216311389U true CN216311389U (en) | 2022-04-15 |
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| CN202121855923.7U Active CN216311389U (en) | 2021-08-10 | 2021-08-10 | Halogen-free low-smoke flame-retardant polyolefin insulation and sheath fire-resistant power cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117524572A (en) * | 2024-01-05 | 2024-02-06 | 四川新东方电缆集团有限公司 | Flame-retardant fireproof aluminum alloy cable |
-
2021
- 2021-08-10 CN CN202121855923.7U patent/CN216311389U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117524572A (en) * | 2024-01-05 | 2024-02-06 | 四川新东方电缆集团有限公司 | Flame-retardant fireproof aluminum alloy cable |
| CN117524572B (en) * | 2024-01-05 | 2024-03-19 | 四川新东方电缆集团有限公司 | Flame-retardant fireproof aluminum alloy cable |
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