CN216487434U - Medium-voltage high-strength multiple waterproof cable for urban rail transit - Google Patents
Medium-voltage high-strength multiple waterproof cable for urban rail transit Download PDFInfo
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- CN216487434U CN216487434U CN202122256366.3U CN202122256366U CN216487434U CN 216487434 U CN216487434 U CN 216487434U CN 202122256366 U CN202122256366 U CN 202122256366U CN 216487434 U CN216487434 U CN 216487434U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The utility model provides a medium-voltage high-strength multiple waterproof cable for urban rail transit. The cable sequentially comprises a conductor, a water-blocking tape wrapping layer, a first shielding layer, an insulating layer, a second shielding layer, a semi-conductive tape wrapping layer, a woven shielding layer, a high-flame-retardant tape wrapping layer, a composite waterproof layer, an armor layer, a wax-coated fiber yarn weaving layer, a double-sided water-blocking tape wrapping layer and an outer sheath from inside to outside; the first shielding layer, the insulating layer and the second shielding layer are formed in an extrusion wrapping mode; the composite waterproof layer is formed by compounding a longitudinally-wrapped aluminum-plastic composite belt and an extruded halogen-free low-smoke flame-retardant polyolefin oxygen-insulating layer; the wax-coated fiber yarn braided layer is a waterproof protective layer which is formed by braiding wax-coated high-strength fiber yarns outside the armor layer. The utility model has good flame retardance and waterproof effect, enhances the strength of armor, has anti-ultraviolet components and effectively ensures that the cable does not crack in the sun.
Description
Technical Field
The utility model relates to a cable, in particular to a medium-voltage high-strength multi-waterproof cable for urban rail transit, and belongs to the technical field of cables for connecting electrical equipment.
Background
With the continuous progress of human civilization, urban rail transit is rapidly developed, and cables are indispensable articles for urban construction. The cable may be classified into a power cable, a communication cable, a control cable, etc. according to its use, and is often installed in the air or under the ground or under the water for telecommunication or power transmission. With the rapid development of the power industry, the data communication industry, the urban rail transit industry and the like, the requirements of various industries on cables are higher and higher, and the cable is particularly used for urban rail transit cables. The underground is generally more moist, can have a lot of groundwater, lays the cable in the underground and requires more to waterproof, if the waterproof nature of cable is poor or cable sheath harms the damage easily, inside water has got into the cable, can lead to forming the water branch in the insulation, and the continuous oxidation of water branch causes the destruction to insulating, has shortened the life-span of cable so greatly.
SUMMERY OF THE UTILITY MODEL
The utility model provides a medium-voltage high-strength multiple waterproof cable for urban rail transit, aiming at meeting the operation environment of subways.
In order to achieve the technical purpose, the utility model provides a medium-voltage high-strength multiple waterproof cable for urban rail transit, which is a single-core cable and is characterized in that: the cable sequentially comprises a conductor, a water-blocking tape wrapping layer, a first shielding layer, an insulating layer, a second shielding layer, a semi-conductive tape wrapping layer, a woven shielding layer, a high-flame-retardant tape wrapping layer, a composite waterproof layer, an armor layer, a wax-coated fiber yarn weaving layer, a double-sided water-blocking tape wrapping layer and an outer sheath from inside to outside; the conductor is formed by regularly twisting the 2 nd copper conductor, the water-blocking tape wrapping layer is a water-blocking layer formed by wrapping a water-blocking tape outside the conductor, and the first shielding layer, the insulating layer and the second shielding layer are formed in an extruding and wrapping mode; the semi-conductive tape wrapping layer is formed by wrapping a semi-conductive tape outside the second shielding layer, the braided shielding layer is woven by metal wires, the high-flame-retardant tape wrapping layer is a flame-retardant layer formed by wrapping a high-flame-retardant tape outside the braided shielding layer, and the composite waterproof layer is a waterproof layer formed by compounding a longitudinally-wrapped aluminum-plastic composite tape and an extruded halogen-free low-smoke flame-retardant polyolefin oxygen-insulating layer; the wax-coated fiber yarn braided layer is a waterproof protective layer which is formed by braiding wax-coated high-strength fiber yarns outside the armor layer; the double-sided water-blocking tape wrapping layer is a waterproof layer formed by wrapping a double-sided water-blocking tape.
The utility model has the following excellent technical scheme: the conductor is of a round conductor structure formed by twisting special-shaped monofilaments.
The utility model has the following excellent technical scheme: the water-blocking tape wrapping layer and the semi-conductive tape wrapping layer are formed by wrapping a semi-conductive water-blocking tape; the high flame-retardant belt is formed by winding a high flame-retardant glass fiber belt.
The utility model has the following excellent technical scheme: the first shielding layer and the second shielding layer are both extruded by adopting a semiconductive cross-linked polyethylene material.
The utility model has the following excellent technical scheme: the insulating layer is made of cross-linked polyethylene insulating material by extrusion.
The utility model has the following excellent technical scheme: the braided shielding layer is formed by weaving copper wires.
The utility model has the following excellent technical scheme: the composite waterproof layer is formed by longitudinally wrapping an aluminum-plastic composite belt and then extruding and wrapping a halogen-free low-smoke flame-retardant polyolefin material outside the longitudinally wrapped aluminum-plastic composite belt.
The utility model has the following excellent technical scheme: the armor layer is armored by a single-layer brass band.
The utility model has the following excellent technical scheme: the wax-coated fiber yarn braided layer is formed by braiding wax-coated polyamide 66 fiber yarns or wax-coated polyamide 6 fiber yarns.
The utility model has the advantages that: the outer sheath is formed by extruding and wrapping halogen-free low-smoke high-flame-retardant polyolefin anti-ultraviolet hydrocarbon sheath materials.
The wrapping tape and the extrusion material such as a semiconductive crosslinked polyethylene material, a halogen-free low-smoke flame-retardant polyolefin material and a halogen-free low-smoke high-flame-retardant polyolefin ultraviolet-resistant hydrocarbon sheath material are all the existing materials sold in the market.
The utility model has the following beneficial effects:
(1) the shielding of the utility model adopts copper wires to weave shielding, thus improving the shielding efficiency, reducing the damage to the cable and overcoming the difficult problem of reinjection damage to the insulation shielding in the copper wire shielding process of the existing medium-voltage cable;
(2) the utility model adopts a multiple water-blocking form, wherein the first heavy water-blocking is formed by wrapping a water-blocking tape on each layer of structure such as a conductor, insulation, armor and the like; the second water-blocking adopts a longitudinal-wrapped aluminum-plastic composite belt and an extruded halogen-free low-smoke flame-retardant polyolefin bonding water-blocking layer, and the third water-blocking layer adopts a high-strength fiber yarn coated with wax to form a water-blocking layer; through three-layer water blocking, the environment of underground ponding and water storage is satisfied at first, and secondly the effectual infiltration that prevents the moisture has promoted the waterproof ability of cable.
(3) The utility model adopts the oxygen barrier material with the oxygen index of more than or equal to 45 percent as the main flame-retardant layer and adopts the high-flame-retardant glass fiber tape as the auxiliary flame-retardant material to jointly form the flame-retardant layer, so that the limited guarantee that the cable can not delay the flame under the flame condition can improve the flame-retardant capability,
(4) the armor of the utility model adopts a single-layer thickened metal belt, the outside of the armor adopts the high-strength fiber yarn which is coated with wax to weave a protective layer, and the surface of the high-strength fiber yarn is coated with wax to form a waterproof layer, so that the high-strength fiber yarn braided layer has a waterproof function, and the strength and the distortion resistance of the cable are effectively improved.
(5) The sheath of the utility model has the function of ultraviolet resistance at the same time, so as to meet the environmental requirements of subways.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Reference numbers in the figures: 1 a conductor; 2 a semi-conductive tape; 3, shielding a conductor; 4, insulating; 5, insulating and shielding; 6 a semi-conductive tape; 7 weaving a shielding layer; 8 high flame-retardant glass fiber tape; 9 waterproof composite layer; 10 a metal armor layer; 11 high-strength wax-coated fiber filaments; 12 double-sided water-blocking tape; 13 outer sheath.
Detailed Description
The utility model is further illustrated by the following figures and examples. Fig. 1 is a drawing of an embodiment, which is drawn in a simplified manner only for the purpose of clearly and concisely illustrating an embodiment of the present invention. The following claims presented in the drawings are specific to embodiments of the utility model and are not intended to limit the scope of the claimed invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the products of the present invention are conventionally placed in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the equipment or elements 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," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
The embodiment provides a medium-voltage high-strength multiple waterproof cable for urban rail transit, which is a single-core waterproof cable and comprises a conductor 1, a water-blocking tape wrapping layer 2, a first shielding layer 3, an insulating layer 4, a second shielding layer 5, a semi-conductive tape wrapping layer 6, a braided shielding layer 7, a high-flame-retardant tape wrapping layer 8, a composite waterproof layer 9, an armor layer 10, a wax-coated fiber braid layer 11, a double-sided water-blocking tape wrapping layer 12 and an outer sheath 13 in sequence from inside to outside as shown in fig. 1; the conductor 1 is a round conductor structure formed by twisting special-shaped monofilaments, and the conductor monofilaments are 2 nd copper conductors.
The forming process of each protective layer of the medium-voltage high-strength multiple waterproof cable for urban rail transit in the embodiment is as follows: the method comprises the steps of forming a water-blocking tape wrapping layer 2 by winding a semi-conductive water-blocking tape outside a conductor 1, extruding a semi-conductive crosslinked polyethylene material outside the water-blocking tape wrapping layer 2 to form a first shielding layer 3, extruding a crosslinked polyethylene insulating material on the first shielding layer 3 to form an insulating layer 4, extruding a semi-conductive crosslinked polyethylene material outside the insulating layer 4 to form a second shielding layer 5, winding the semi-conductive water-blocking tape outside the second shielding layer 5 to form a semi-conductive tape wrapping layer 6, weaving copper wires on the semi-conductive tape wrapping layer 6 to form a woven shielding layer 7, winding a high-flame-retardant glass fiber tape outside the woven shielding layer 7 to form a high-flame-retardant tape layer 8, longitudinally wrapping the high-flame-retardant tape around the aluminum-plastic wrapping layer 8 by adopting an aluminum-plastic composite tape, extruding a composite waterproof layer 9 formed by a halogen-free low-smoke flame-retardant polyolefin material outside the aluminum-plastic composite tape wrapping layer longitudinally, and forming an armor layer 10 by adopting a single-layer brass strip, then, the waxed polyamide 66 fiber or the waxed polyamide 6 fiber is adopted to be woven outside the armor layer 10 to form a waterproof protective layer, namely, a waxed fiber woven layer 11, a double-sided water-blocking tape wrapping layer 12 is formed by wrapping the waxed fiber woven layer 11 through a double-sided water-blocking tape, and finally, the double-sided water-blocking tape wrapping layer 12 is wrapped by a halogen-free low-smoke high-flame-retardant polyolefin anti-ultraviolet hydrocarbon sheath material to form an outer sheath 13.
The cable conductor core is round and compact, and the flame-retardant belting layer, the oxygen-isolating layer and the sheath are made of high flame-retardant materials, so that the cable has good flame retardance. The cable is not easy to burn under the flame condition, so that the safety factor and the service life of the cable are increased; the longitudinal-wrapped aluminum-plastic composite belt and the extruded halogen-free low-smoke flame-retardant polyolefin oxygen-barrier layer form a composite waterproof layer, so that the water is effectively prevented from being immersed; the armor layer is woven by high-strength wax-coated fiber yarns, so that the strength of the armor is enhanced, and the waterproof function is increased. The sheath material has anti-ultraviolet components, and the cable is effectively prevented from cracking in the sun.
Although particular embodiments of the utility model have been described and illustrated in detail, it is to be understood that equivalent changes and modifications may be made to the above embodiments in light of the above teachings, and that the resulting functional uses may be such that they are within the scope of the present invention as defined by the appended claims.
Claims (10)
1. The utility model provides a multiple waterproof cable of medium-voltage high strength for urban rail transit, is single core cable, its characterized in that: the cable sequentially comprises a conductor (1), a water-blocking tape wrapping layer (2), a first shielding layer (3), an insulating layer (4), a second shielding layer (5), a semi-conductive tape wrapping layer (6), a braided shielding layer (7), a high-flame-retardant tape wrapping layer (8), a composite waterproof layer (9), an armor layer (10), a wax-coated fiber wire braided layer (11), a double-sided water-blocking tape wrapping layer (12) and an outer sheath (13) from inside to outside; the conductor (1) is formed by regularly twisting the 2 nd copper conductor, the water-blocking tape wrapping layer (2) is a water-blocking layer formed by wrapping a water-blocking tape outside the conductor (1), and the first shielding layer (3), the insulating layer (4) and the second shielding layer (5) are formed in a squeezing wrapping mode; the semi-conductive tape wrapping layer (6) is formed by wrapping a semi-conductive tape outside the second shielding layer (5), the woven shielding layer (7) is woven by metal wires, the high-flame-retardant tape wrapping layer (8) is a flame-retardant layer formed by wrapping a high-flame-retardant tape outside the woven shielding layer (7), and the composite waterproof layer (9) is a waterproof layer formed by compounding a longitudinally-wrapped aluminum-plastic composite tape and an extruded halogen-free low-smoke flame-retardant polyolefin oxygen-insulating layer; the wax-coated fiber yarn braided layer (11) is a waterproof protective layer formed by braiding wax-coated high-strength fiber yarns outside the armor layer (10); the double-sided water-blocking tape wrapping layer (12) is a waterproof layer formed by wrapping double-sided water-blocking tapes.
2. The medium-voltage high-strength multiple waterproof cable for urban rail transit according to claim 1, characterized in that: the conductor (1) is of a round conductor structure formed by twisting special-shaped monofilaments.
3. The medium-voltage high-strength multiple waterproof cable for urban rail transit according to claim 1, characterized in that: the water-blocking tape wrapping layer (2) and the semi-conductive tape wrapping layer (6) are formed by wrapping a semi-conductive water-blocking tape; the high flame-retardant belt (8) is formed by winding a high flame-retardant glass fiber belt.
4. The medium-voltage high-strength multiple waterproof cable for urban rail transit according to claim 1, characterized in that: the first shielding layer (3) and the second shielding layer (5) are both extruded by adopting a semiconductive cross-linked polyethylene material.
5. The medium-voltage high-strength multiple waterproof cable for urban rail transit according to claim 1, characterized in that: the insulating layer (4) is formed by extruding a cross-linked polyethylene insulating material.
6. The medium-voltage high-strength multiple waterproof cable for urban rail transit according to claim 1, characterized in that: the braided shielding layer (7) is formed by weaving copper wires.
7. The medium-voltage high-strength multiple waterproof cable for urban rail transit according to claim 1, characterized in that: the composite waterproof layer (9) is a composite layer formed by longitudinally wrapping an aluminum-plastic composite belt and then extruding and wrapping a halogen-free low-smoke flame-retardant polyolefin material outside the longitudinally wrapped layer of the aluminum-plastic composite belt.
8. The medium-voltage high-strength multiple waterproof cable for urban rail transit according to claim 1, characterized in that: the armor layer (10) is armored by a single-layer brass strip.
9. The medium-voltage high-strength multiple waterproof cable for urban rail transit according to claim 1, characterized in that: the wax-coated fiber yarn braided layer (11) is formed by braiding wax-coated polyamide 66 fiber yarns or wax-coated polyamide 6 fiber yarns.
10. The medium-voltage high-strength multiple waterproof cable for urban rail transit according to claim 1, characterized in that: the outer sheath (13) is formed by extruding and wrapping halogen-free low-smoke high-flame-retardant polyolefin anti-ultraviolet hydrocarbon sheath materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122256366.3U CN216487434U (en) | 2021-09-16 | 2021-09-16 | Medium-voltage high-strength multiple waterproof cable for urban rail transit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122256366.3U CN216487434U (en) | 2021-09-16 | 2021-09-16 | Medium-voltage high-strength multiple waterproof cable for urban rail transit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216487434U true CN216487434U (en) | 2022-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122256366.3U Active CN216487434U (en) | 2021-09-16 | 2021-09-16 | Medium-voltage high-strength multiple waterproof cable for urban rail transit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216487434U (en) |
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2021
- 2021-09-16 CN CN202122256366.3U patent/CN216487434U/en active Active
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