Low-smoke halogen-free fireproof polyolefin flame-retardant nylon sheath copper core wire
The high compressive strength of copper core wires extends their service life and provides a guarantee of stable operation during fires.
Patent Information
- Application Number
- CN202423090711.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-13
AI Technical Summary
Existing copper core wires have weak compressive strength and short service life.
The support structure employs arc-shaped support strips, connecting blocks, and support blocks, combined with ceramic mica composite strips and low-smoke halogen-free flame-retardant polyolefin materials, to form a multi-layer structure to improve compressive strength and fire resistance.
It improves the compressive strength of copper core wires, extends their service life, ensures stable operation in flames, reduces flame spread rate, provides self-extinguishing protection upon removal of flame, and has a high safety factor.
Smart Images
Figure CN223612131U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of electric wires, in particular to a low-smoke halogen-free fire-resistant polyolefin flame-retardant nylon sheath copper core electric wire. BACKGROUND
[0002] At present, most of the electric wire cables for fixed wiring of power devices with a rated voltage of 450 / 750 V and below on the market, whether single-core electric wire or two-core or three-core sheathed wire, only adopts a layer of polyolefin material as the insulation layer, the polyolefin insulation material is a thermoplastic material, the dielectric loss and dielectric constant are relatively large, the compression resistance is relatively weak, and the service life is relatively short.
[0003] According to the related technology in the above, the applicant believes that the compression resistance of the current copper core electric wire still has room for improvement. CONTENT OF THE UTILITY MODEL
[0004] In order to improve the compression resistance of the copper core electric wire and prolong the service life of the copper core electric wire, the application provides a low-smoke halogen-free fire-resistant polyolefin flame-retardant nylon sheath copper core electric wire.
[0005] The application provides a low-smoke halogen-free fire-resistant polyolefin flame-retardant nylon sheath copper core electric wire which adopts the following technical scheme:
[0006] A low-smoke halogen-free fire-resistant polyolefin flame-retardant nylon sheath copper core electric wire, comprising a copper conductor, a fireproof layer, an insulation layer and a sheath layer, wherein the sheath layer is provided with a support structure, the support structure comprises support strips, connecting blocks and support blocks, the support strips are arranged in the sheath layer in an arc shape and are circumferentially spaced apart, the upper apex of each support strip is fixed to the outer side in the sheath layer, the connecting blocks are fixed between adjacent support strips, the support blocks are fixed on the connecting blocks, the side walls of the support blocks are concave in an arc shape, and one side of each support block is fixed to the outer side in the sheath layer.
[0007] By adopting the above technical scheme, the arc-shaped support strips improve the anti-deformation performance of the copper core electric wire when it is subjected to extrusion, the connecting blocks improve the structural strength of the adjacent support strips, and the arc-shaped side walls of the support blocks can also provide a deformation space, thereby improving the compression resistance of the copper core electric wire as a whole and prolonging the service life of the copper core electric wire.
[0008] Preferably, the outer side wall of each support strip is in contact with the outer side in the sheath layer in a plurality of connected triangular shapes.
[0009] By adopting the above technical scheme, the plurality of connected triangular shapes on the support strips improve the deformation capacity of the contact between the support strips and the outer side in the sheath layer, which is conducive to dispersing the extrusion force received.
[0010] Preferably, the support structure further comprises deformation blocks, the deformation blocks are semicircular and symmetrically arranged in the support strips, the vertices of the symmetric deformation blocks are fixedly connected with each other, and the opposite side walls of the deformation blocks are fixed to the inner side walls of the support strips and the outer side walls of the insulation layers respectively; the deformation blocks corresponding to the triangles connected to the support strips are in the same adaptive shape.
[0011] By adopting the above technical scheme, the symmetric deformation blocks in the support strips improve the structural strength of the support strips.
[0012] Preferably, the side walls of the connecting blocks are matched with the shapes of the side walls of the two adjacent support strips.
[0013] Preferably, the fireproof layer is a ceramic mica composite tape.
[0014] By adopting the above technical scheme, the outer layer of the copper conductor is tightly wound around the high-density ceramic mica composite tape, and a double-layer fireproof layer structure is adopted, so that the stable operation of the circuit can be ensured in the event of a fire, that is, the power supply can be continued for more than 90 minutes under a 950℃ flame, thereby providing great protection for escape, evacuation and rescue.
[0015] Preferably, the insulation layer is a low-smoke halogen-free flame-retardant polyolefin.
[0016] By adopting the above technical scheme, the low-smoke halogen-free flame-retardant polyolefin is extruded, the material is environmentally friendly and halogen-free, only a small amount of white smoke and water vapor is generated during combustion, and the material has the characteristics of flame retardation, can effectively slow down the flame spread rate, and self-extinguish after leaving the fire, so that the safety factor is high.
[0017] Preferably, the sheath layer is a flame-retardant nylon.
[0018] By adopting the above technical scheme, the outermost sheath layer is made of high-quality flame-retardant nylon material, the nylon has excellent wear resistance, chemical resistance, oil resistance, gasoline resistance and self-lubricity, is stable and reliable, is not easy to damage, is easy to pipe, facilitates wire pipe construction, prevents wire damage, improves construction efficiency and construction quality, and effectively reduces the hidden short-circuit accident hazard.
[0019] In summary, the present application has at least one of the following beneficial technical effects:
[0020] The arc-shaped support strips improve the anti-deformation performance of the copper core wire when the copper core wire is subjected to extrusion, the connecting blocks improve the structural strength of the adjacent support strips, and the arc-shaped side walls of the support blocks can also provide deformation space, thereby improving the pressure resistance of the copper core wire as a whole and prolonging the service life of the copper core wire.
[0021] The triangles connected to the support strips improve the deformation ability of the contact between the support strips and the outer side of the sheath layer, which is beneficial to dispersing the extrusion force received.
[0022] The symmetrical deformation blocks in the support strips improve the structural strength of the support strips. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 is a sectional structure schematic diagram of the embodiment of the present application.
[0024] Reference signs: 1, copper conductor; 2, fireproof layer; 3, insulation layer; 4, sheath layer; 5, support structure; 51, support strip; 52, deformation block; 53, connecting block; 54, support block. DETAILED DESCRIPTION
[0025] The present application will be further described in detail below with reference to the accompanying drawings.
[0026] The embodiment of the present application discloses a low-smoke halogen-free fire-resistant polyolefin flame-retardant nylon sheath copper core wire, referring to Figure 1 , comprising a copper conductor 1, a fireproof layer 2, an insulation layer 3 and a sheath layer 4.
[0027] Referring to Figure 1 , the fireproof layer 2 is a ceramic mica composite tape; the copper conductor 1 is tightly wound with a high-density ceramic mica composite tape on the outer layer, and a double-layer fireproof layer 2 structure is adopted, which can ensure the stable operation of the circuit in the event of a fire, that is, the power supply can be continued for more than 90 minutes under a 950℃ flame, thereby providing great protection for escape, evacuation and rescue.
[0028] Referring to Figure 1 , the insulation layer 3 is low-smoke halogen-free flame-retardant polyolefin; the low-smoke halogen-free flame-retardant polyolefin is extruded; the material is environmentally friendly and halogen-free, only a small amount of white smoke and water vapor are generated during combustion, and the material has the characteristics of flame retardation, can effectively slow down the flame spread rate, self-extinguish after leaving the fire, and has a high safety factor.
[0029] Referring to Figure 1 , the sheath layer 4 is flame-retardant nylon; the outermost sheath layer 4 is made of high-quality flame-retardant nylon material; the nylon has excellent wear resistance, chemical resistance, oil resistance, gasoline resistance and self-lubricity, is stable and reliable, is not easy to damage, is easy to pipe, is convenient for wire pipe construction, prevents wire damage, improves construction efficiency and construction quality, and effectively reduces the hidden short-circuit accident hazard.
[0030] Referring to Figure 1 , the sheath layer 4 is provided with a support structure 5, and the support structure 5 comprises a support strip 51; the support strip 51 is arranged in the sheath layer 4 in an arc shape and is arranged in a circumferential direction at intervals; the outer side wall of the upper vertex of the support strip 51 is in the form of a plurality of connected triangles; the upper vertex of the support strip 51 in the form of a plurality of connected triangles is fixed to the outer side in the sheath layer 4; the deformation ability of the contact part between the support strip 51 and the outer side in the sheath layer 4 is improved by the plurality of connected triangles on the support strip 51, and the received extrusion force is dispersed.
[0031] Referring to Figure 1 The support structure 5 further comprises deformation blocks 52, which are semicircular and symmetrically arranged in the support strips 51, the vertices of the symmetric deformation blocks 52 are fixedly connected to each other, and the opposite side walls of the deformation blocks 52 are fixed to the inner side wall of the support strip 51 and the outer side wall of the insulation layer 3 respectively; the deformation blocks 52 corresponding to the triangles on the support strip 51 are of the same adaptive shape; the symmetric deformation blocks 52 arranged in the support strip 51 improve the structural strength of the support strip 51.
[0032] The support structure 5 further comprises connecting blocks 53 and support blocks 54, the connecting blocks 53 are fixed between the adjacent support strips 51, and the side walls of the connecting blocks 53 are matched with the side walls of the two adjacent support strips 51 in shape; the support blocks 54 are fixed on the connecting blocks 53, and the two side walls of the support blocks 54 are in the form of inwardly recessed arcs, one side of the support block 54 is fixed to the outer side in the sheath layer 4, the connecting blocks 53 improve the structural strength of the adjacent support strips 51, and the arc-shaped side walls of the support blocks 54 can also provide deformation space, thereby improving the compression resistance of the copper core wire as a whole.
[0033] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.
Claims
1. A low smoke, zero halogen, fire rated, polyolefin jacketed, flame retardant nylon, copper core electrical wire, characterized in that: The application relates to a copper conductor (1), a fireproof layer (2), an insulation layer (3) and a sheath layer (4); the sheath layer (4) is internally provided with a supporting structure (5), the supporting structure (5) comprises supporting strips (51), connecting blocks (53) and supporting blocks (54), the supporting strips (51) are arranged in an arc shape and in a circumferential interval in the sheath layer (4) and the upper vertex of the supporting strips (51) is fixed to the outer side in the sheath layer (4), the connecting blocks (53) are fixed between the adjacent supporting strips (51), the supporting blocks (54) are fixed on the connecting blocks (53) and the two side walls of the supporting blocks (54) are in an inwardly recessed arc shape, and one side of the supporting blocks (54) is fixed to the outer side in the sheath layer (4).
2. A low smoke zero halogen fire resistant type polyolefin flame retardant nylon jacketed copper conductor wire as claimed in claim 1, wherein: The outer side wall of the supporting strip (51) is in contact with the outer side in the sheath layer (4) in a plurality of connected triangular shapes.
3. A low smoke zero halogen fire resistant type polyolefin flame retardant nylon jacketed copper conductor wire as claimed in claim 2, wherein: The supporting structure (5) further comprises deformation blocks (52), the deformation blocks (52) are in a semicircular shape and are symmetrically arranged in the supporting strips (51), the vertexes of the symmetric deformation blocks (52) are fixed to each other, the side walls of the deformation blocks (52) are respectively fixed to the inner side wall of the supporting strip (51) and the outer side wall of the insulation layer (3), and the deformation blocks (52) corresponding to the plurality of connected triangular shapes of the supporting strip (51) are in the same adaptive shape.
4. The low smoke zero halogen, fire resistant, polyolefin jacketed, flame retardant nylon sheathed copper conductor electrical wire of claim 1, wherein: The side wall of the connecting block (53) is matched with the side wall shape of the two adjacent supporting strips (51).
5. A low smoke zero halogen, fire resistant, polyolefin jacketed, flame retardant nylon sheathed copper conductor electrical wire according to claim 1, characterized in that: The fireproof layer (2) is a ceramic mica composite tape.
6. A low smoke zero halogen fire resistant type polyolefin flame retardant nylon jacketed copper conductor electrical wire according to claim 1, characterized in that: The insulation layer (3) is low-smoke halogen-free flame-retardant polyolefin.
7. A low smoke zero halogen, fire resistant, polyolefin jacketed, flame retardant nylon sheathed copper conductor electrical wire according to claim 1, characterized in that: The sheath layer (4) is flame-retardant nylon.