CN216647883U - Waterproof flame-retardant cable - Google Patents
Waterproof flame-retardant cable Download PDFInfo
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- CN216647883U CN216647883U CN202122544452.4U CN202122544452U CN216647883U CN 216647883 U CN216647883 U CN 216647883U CN 202122544452 U CN202122544452 U CN 202122544452U CN 216647883 U CN216647883 U CN 216647883U
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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
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Abstract
The utility model belongs to the technical field of cables, and particularly relates to a waterproof flame-retardant cable which comprises: the cable core is circular in section and comprises an insulating wire core, a waterproof layer and a filling layer; the waterproof layer is extruded and coated on the outer side of the insulated wire core, and the extrusion material is waterproof cable paste; the filling layer is filled among the plurality of insulating wire cores sleeved with the waterproof layer; the reinforcing layer comprises a glass fiber wrapping tape and a water blocking tape, and the water blocking tape is wrapped on the outer side of the cable core; the glass fiber wrapping tape is wrapped on the outer side of the water blocking tape; the outer sheath is extruded on the outer side of the reinforcing layer. In the structure, the waterproof cable paste with the waterproof performance is directly extruded and formed on the outer side of the insulated wire core, so that the waterproof cable paste is tightly attached to the insulated wire core, and the waterproof performance of the cable is greatly improved; the waterproof layer and the reinforcing layer are compounded, so that the waterproof performance of the cable is improved, and the flame retardant performance of the cable is synchronously improved.
Description
Technical Field
The utility model belongs to the technical field of cables, and particularly relates to a waterproof flame-retardant cable.
Background
A cable is a wire product used to transmit electric energy, information and perform electromagnetic energy conversion. The cable is used as a main carrier of power transmission, is widely applied to aspects of electrical equipment, lighting circuits, household appliances and the like, and the quality of the cable directly influences the engineering quality and the life and property safety of consumers.
The traditional cable in the current market has poor waterproof performance, and the service life of the cable is influenced after the cable is drenched or soaked in water. Most of waterproof cables in the market are waterproof cables which are mainly made of waterproof tape wrapped composite polyethylene sheath structures. The wrapping and attaching of the water blocking tape are not tight enough, a water flow channel is easy to form at the attaching position, water flows in the cable when the cable is partially damaged, and the waterproof effect is poor; meanwhile, the polyethylene material has poor combustion performance, and cannot meet the requirement of the market on flame retardance.
Therefore, in view of the above disadvantages, the present invention is urgently needed to provide a waterproof flame-retardant cable.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a waterproof flame-retardant cable, which aims to solve the problem of poor waterproof effect of the cable in the prior art.
The utility model provides a waterproof flame-retardant cable, which comprises: the cable core is circular in section and comprises an insulating wire core, a waterproof layer and a filling layer; the waterproof layer is extruded and wrapped on the outer side of the insulated wire core, and the extrusion material is waterproof cable paste; the filling layer is filled outside the plurality of insulated wire cores sleeved with the waterproof layer; the reinforcing layer comprises a glass fiber wrapping tape and a water blocking tape, and the water blocking tape is wrapped on the outer side of the cable core; the glass fiber wrapping tape is wrapped on the outer side of the water blocking tape; the outer sheath is extruded on the outer side of the reinforcing layer.
In the waterproof flame-retardant cable, it is further preferable that the insulated wire core includes a conductor and an insulating layer, and the insulating layer is wrapped outside the conductor.
In the waterproof flame-retardant cable, it is preferable that the insulating layer is a crosslinked polyethylene extruded layer.
In the waterproof flame-retardant cable, it is further preferable that the conductor includes a plurality of oxygen-free bare copper wires, and the plurality of oxygen-free bare copper wires are twisted with each other.
In the waterproof flame-retardant cable, it is further preferable that the insulated wire core is an insulated compact structure, and the roundness is at least 95%.
In the waterproof flame-retardant cable described above, it is further preferable that the filler layer is a glass fiber rope.
In the waterproof flame-retardant cable, it is further preferable that the outer sheath is a low-smoke halogen-free polyolefin extruded sheath.
In the waterproof flame-retardant cable, it is further preferable that the outer sheath has a wall thickness of 0.5 to 10 mm.
In the waterproof flame-retardant cable, it is further preferable that the number of the insulated wire cores is 2, 3, 4 or 5.
Compared with the prior art, the utility model has the following advantages:
the waterproof flame-retardant cable comprises a cable core, a reinforcing layer and an outer sheath, wherein the section of the cable core is circular and comprises an insulating wire core, a waterproof layer and a filling layer; the waterproof layer is extruded and wrapped on the outer side of the insulated wire core, and the extrusion material is waterproof cable paste; the filling layer is filled among the plurality of insulating wire cores sleeved with the waterproof layer; the reinforcing layer comprises a glass fiber wrapping tape and a water blocking tape, and the water blocking tape is wrapped on the outer side of the cable core; the glass fiber wrapping tape is wrapped on the outer side of the water blocking tape; the outer sheath is extruded on the outer side of the reinforcing layer. In the structure, the waterproof cable paste with the waterproof performance is directly extruded and formed on the outer side of the insulated wire core, so that the waterproof cable paste is tightly attached to the insulated wire core, the insulated wire core is prevented from being stained with water to influence the insulating performance of the cable, and the waterproof performance of the cable is greatly improved. Meanwhile, the reinforcing layer comprising the glass fiber wrapping tape and the water blocking tape is arranged and matched with the outer sheath for use, so that the flame retardant property of the cable is greatly improved. The composite structure not only improves the waterproof performance of the cable, but also synchronously improves the flame retardant performance of the cable.
In the embodiment, the conductor in the insulated wire core is formed by twisting a plurality of oxygen-free bare copper wires according to the twisting pitch, so that the roundness and the flexibility of the conductor are ensured.
In the utility model, the insulating layer of the insulating wire core is a crosslinked polyethylene extrusion layer, namely, the crosslinked polyethylene material is directly extruded and molded on the outer side of the conductor, so that the conductor and the insulating layer can be well attached without a gap, a runner cannot be formed, and the conductor is easy to peel; meanwhile, due to the structural property of the crosslinked polyethylene material, the crosslinked polyethylene material can be well attached to the waterproof cable paste extruded outside without gaps, and the waterproof performance is greatly improved.
According to the utility model, the glass fiber rope filling layer and the glass fiber wrapping tape are combined for use, so that the flame retardant property of the cable can be greatly enhanced. The waterproof performance of the cable can be greatly improved by combining the waterproof tape and the waterproof layer.
The outer sheath is a low-smoke halogen-free polyolefin extruded sheath, and the high-flame-retardant low-smoke halogen-free polyolefin has excellent flame retardant property and meets the flame retardant property of the cable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic sectional view of a waterproof and flame-retardant cable according to the present invention.
Description of the reference numerals:
1-outer sheath, 2-glass fiber wrapping tape, 3-water-blocking tape, 4-filling layer, 5-waterproof layer, 6-insulating layer and 7-conductor.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" 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 should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the terms in the present invention will be understood as specific cases to those of ordinary skill in the art.
As shown in fig. 1, the waterproof flame-retardant cable provided in this embodiment includes a cable core, a reinforcing layer, and an outer sheath 1, where the reinforcing layer is sleeved on an outer side of the cable core, and the outer sheath 1 is sleeved on an outer side of the reinforcing layer.
The section of the cable core is circular and comprises an insulating wire core, a waterproof layer 5 and a filling layer 4. Specifically, the insulated wire core comprises a conductor 7 and an insulating layer 6, wherein the conductor 7 comprises a plurality of oxygen-free bare copper wires which are mutually twisted according to a preset twisting pitch so as to ensure the roundness and the flexibility of the conductor 7; the insulating layer 6 is formed on the outer side of the conductor 7 in an extruding mode, so that bubbles and impurities which are invisible on the section of the insulating wire core are suitable for being well attached to the outer peripheral surface of the conductor 7, and a water guide channel is prevented from being formed between the conductor 7 and the insulating layer 6. The extrusion-molded insulating layer 6 enables the insulated wire core to be of an insulating and pressing structure, and preferably, the roundness tolerance of the insulated wire core is smaller than 0.1 mm.
In order to enable the insulated wire core to have waterproof performance, the waterproof layer 5 is wrapped outside the insulated wire core in an extruding mode, specifically, the waterproof layer 5 is made of waterproof cable paste and is suitable for being well attached to the peripheral face of the insulating layer 6, a water guide channel is prevented from being formed between the waterproof layer 5 and the insulating layer 6, the insulated wire core is prevented from being stained with water to affect the insulating performance of the cable, and therefore the waterproof performance of the cable is greatly improved.
Preferably, in order to ensure the insulating property and enhance the bonding effect of the waterproof layer 5 and the insulating layer 6, the insulating layer 6 is preferably a low-smoke halogen-free polyolefin extrusion sleeve and is made of a cross-linked polyethylene material by extrusion, the cross-linked polyethylene is obtained by cross-linking macromolecules of polyethylene under the action of high-energy rays (such as gamma rays, alpha rays, electronic rays and the like) or a cross-linking agent, and compared with polyethylene, the performance of the cross-linked polyethylene material obtained by cross-linking modification is greatly improved, so that the comprehensive properties of the polyethylene, such as mechanical property, environmental stress cracking resistance, chemical corrosion resistance, creep resistance, electrical property and the like, are remarkably improved, the temperature resistance grade is remarkably improved, and the requirement on the insulating property of the conductor 7 can be better met; meanwhile, the crosslinked polyethylene has the properties of net-shaped and body-shaped structures, so that the adhesiveness of the waterproof cable paste can be improved, and the waterproof cable paste can be better attached.
As shown in fig. 1, the filling layer 4 is filled outside the plurality of insulation wire cores extruded with the waterproof layer 5, and specifically, the filling layer 4 is a glass fiber rope, and the glass fiber rope is twisted with the plurality of insulation wire cores extruded with the waterproof layer 5. The glass fiber is a better flame-retardant material, is filled between the insulated wire cores, and can greatly enhance the flame-retardant performance of the cable.
As shown in fig. 1, the reinforcing layer is used for enhancing the waterproof property and the flame retardant property of the cable core, and specifically, the reinforcing layer includes a glass fiber tape 2 and a water blocking tape 3, wherein the water blocking tape 3 wraps the outer side of the cable core, and the glass fiber tape 2 wraps the outer side of the water blocking tape 3. The water blocking tape 3 is used for blocking water, is wound on the outer side of the cable core and is suitable for preventing water from penetrating through the water blocking tape 3 to enter the cable core. The glass fiber tape is made of glass fiber materials, and the glass fiber tape is wrapped on the outer side of the water blocking tape 3 and is suitable for increasing the flame retardant property of the cable by utilizing the property of the glass fiber materials. Preferably, when the water-blocking tape 3 and the glass fiber tape 2 are wrapped, the overlapping rate of the glass fiber tape 2 and the water-blocking tape 3 is at least 60%, that is, the overlapping area of two adjacent circles of water-blocking tapes 3 or the glass fiber tape 2 is at least 60%, so as to ensure the water-blocking and flame-retardant effects.
As shown in fig. 1, the outer sheath 1 is used for providing outer protection for the cable core and the reinforcing layer structure, and the outer sheath 1 is a low smoke zero halogen polyolefin extrusion sleeve, and is formed on the outer side of the reinforcing layer by extrusion coating of a low smoke zero halogen polyolefin material. During actual processing, an extrusion grinding tool with large extrusion force is adopted to directly extrude and wrap the low-smoke halogen-free polyolefin material outside the reinforcing layer so as to ensure that the gap between the outer sheath 1 and the reinforcing layer is tightly filled, thereby ensuring that the surface of the whole cable is smooth and round and the color and luster are basically consistent, and the section has no visible bubbles and impurities.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A waterproof flame-retardant cable, comprising:
The cable core is circular in section and comprises an insulating wire core, a waterproof layer and a filling layer; the waterproof layer is extruded and coated on the outer side of the insulated wire core, and the extrusion material is waterproof cable paste; the filling layer is filled among the plurality of insulating wire cores sleeved with the waterproof layer;
the reinforcing layer comprises a glass fiber wrapping tape and a water blocking tape, and the water blocking tape is wrapped on the outer side of the cable core; the glass fiber wrapping tape is wrapped on the outer side of the water blocking tape;
the outer sheath is extruded on the outer side of the reinforcing layer.
2. The waterproof and flame-retardant cable of claim 1, wherein the insulated wire core comprises a conductor and an insulating layer, and the insulating layer is extruded outside the conductor.
3. The waterproof flame retardant cable of claim 2 wherein the insulating layer is a cross-linked polyethylene extrusion layer.
4. The waterproof and flame retardant cable of claim 2 wherein the conductor comprises a plurality of oxygen free bare copper wires stranded about one another.
5. The waterproof flame retardant cable of claim 2 wherein the roundness tolerance of the insulated wire core is less than 0.1 mm.
6. The waterproof flame retardant cable of claim 1 wherein the filler layer is a fiberglass rope.
7. The waterproof flame-retardant cable according to claim 1, wherein the outer sheath is a low smoke zero halogen polyolefin extruded sheath.
8. The waterproof flame retardant cable of claim 7 wherein the outer jacket has a wall thickness of 0.5-10 mm.
9. The waterproof flame retardant cable of claim 1 wherein the number of insulated wire cores is 2, 3, 4 or 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122544452.4U CN216647883U (en) | 2021-10-21 | 2021-10-21 | Waterproof flame-retardant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122544452.4U CN216647883U (en) | 2021-10-21 | 2021-10-21 | Waterproof flame-retardant cable |
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| Publication Number | Publication Date |
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| CN216647883U true CN216647883U (en) | 2022-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122544452.4U Active CN216647883U (en) | 2021-10-21 | 2021-10-21 | Waterproof flame-retardant cable |
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| CN (1) | CN216647883U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115862940A (en) * | 2022-12-26 | 2023-03-28 | 江苏宝安电缆有限公司 | Dynamic longitudinal watertight cable and preparation process thereof |
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2021
- 2021-10-21 CN CN202122544452.4U patent/CN216647883U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115862940A (en) * | 2022-12-26 | 2023-03-28 | 江苏宝安电缆有限公司 | Dynamic longitudinal watertight cable and preparation process thereof |
| CN115862940B (en) * | 2022-12-26 | 2023-08-18 | 江苏宝安电缆有限公司 | Dynamic longitudinal watertight cable and preparation process thereof |
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