CN216084404U - Flame-retardant power cable - Google Patents
Flame-retardant power cable Download PDFInfo
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- CN216084404U CN216084404U CN202122454451.0U CN202122454451U CN216084404U CN 216084404 U CN216084404 U CN 216084404U CN 202122454451 U CN202122454451 U CN 202122454451U CN 216084404 U CN216084404 U CN 216084404U
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Abstract
The utility model provides a flame-retardant power cable, wherein each wire core is uniformly contained in a high-temperature-resistant filling layer. The high-temperature-resistant filling layer is internally provided with a toughness reinforcing yarn, and the shaping net is arranged on the high-temperature-resistant filling layer. The shaping net is contained in the heat insulation layer. The shielding belt is arranged on the heat insulation layer through sealing glue. The shielding belt is contained in the anti-oxidation layer and is connected with the anti-oxidation layer through the sealant. The anti-oxidation layer is internally provided with a plurality of water absorption bubbles and a plurality of oxidation bubbles, the water absorption bubbles and the oxidation bubbles are uniformly arranged in the anti-oxidation layer at intervals, water absorption powder is arranged in each water absorption bubble of the anti-oxidation layer, and oxidation powder is arranged in each oxidation bubble of the anti-oxidation layer. The anti-oxidation layer is contained in the insulating protective sleeve, and a plurality of wear-resistant strips are uniformly arranged in the insulating protective sleeve. The sinle silk includes a plurality of conductor wires, soft fire-retardant median and flame retardant coating from inside to outside in proper order. The surface layer of each conductive wire is provided with a flame retardant, and each conductive wire is twisted and contained in the soft flame-retardant isolation belt.
Description
Technical Field
The utility model relates to the field of cables, in particular to a flame-retardant power cable.
Background
A cable is a conductor made of one or more conductors insulated from each other and an outer insulating sheath that carries power or information from one location to another. The cable includes power cable, control cable, compensation cable, shielding cable, high-temperature cable, computer cable, signal cable, coaxial cable, fire-resistant cable, marine cable, mining cable, aluminum alloy cable and the like. They are made up of single or multiple wires and insulating layers to connect the requirements of circuits, appliances, etc., thus forming a family of dedicated devices for cable manufacturing. Such as extruder series, drawing machine series, stranding machine series, lapping machine series, etc. The manufacturing process of the electric wire and the electric cable and the development of special equipment are closely related and mutually promoted. The new process requirement promotes the generation and development of new special equipment; in turn, the development of new special equipment promotes the popularization and application of new processes. The power cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater.
However, with the development of the Chinese economy and the soaring of the power information industry, the application of the power cable permeates into various fields of life. However, the conventional power cable has weak high temperature resistance, so that the service life of the cable cannot be guaranteed, frequent maintenance and replacement of the cable are required, and the use cost of the cable is greatly increased.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a flame retardant power cable for solving the technical problem of poor high temperature resistance of the conventional power cable.
A flame-retardant power cable, which comprises from inside to outside in sequence: the cable comprises a plurality of cable cores, a high-temperature-resistant filling layer, a sizing net, a heat insulation layer, a shielding belt, an anti-oxidation layer and an insulating protective sleeve;
each wire core is uniformly accommodated in the high-temperature-resistant filling layer; the high-temperature-resistant filling layer is internally provided with toughness reinforcing yarns, and the sizing net is arranged on the high-temperature-resistant filling layer; the shaping net is accommodated in the heat insulation layer; the shielding belt is arranged on the heat insulation layer through sealing glue; the shielding belt is accommodated in the anti-oxidation layer and is connected with the anti-oxidation layer through a sealant; the anti-oxidation layer is internally provided with a plurality of water absorption bubbles and a plurality of oxidation bubbles, the water absorption bubbles and the oxidation bubbles are uniformly and separately arranged in the anti-oxidation layer, water absorption powder is arranged in each water absorption bubble of the anti-oxidation layer, and oxidation powder is arranged in each oxidation bubble of the anti-oxidation layer; the anti-oxidation layer is contained in the insulating protective sleeve, and a plurality of wear-resistant strips are uniformly arranged in the insulating protective sleeve;
the wire core sequentially comprises a plurality of conductive wires, a soft flame-retardant isolation belt and a fireproof layer from inside to outside; the surface layer of each conductive wire is provided with a flame retardant, and each conductive wire is twisted and contained in the soft flame-retardant isolation belt; the fire-proof layer is arranged on the surface layer of the soft flame-retardant isolation belt.
In one embodiment, the tenacity-enhancing yarn is an aramid yarn.
In one embodiment, the sizing net is a galvanized steel wire mesh grid.
In one embodiment, the high temperature resistant filling layer is fire-proof mud.
In one embodiment, the insulation layer is a mica insulation tape.
In one embodiment, the oxide powder is iron powder.
In one embodiment, the shielding tape is an aluminum foil tape.
In one embodiment, the wear resistant strips are wear resistant rubber strips.
In one embodiment, the oxidation prevention layer is a flame-retardant silica gel layer.
In one embodiment, the water-absorbing powder is water-absorbing resin powder
Above-mentioned fire-retardant power cable, insulating lag has played the effect insulating and protection to fire-retardant power cable, and in the oxidation prevention coating, the powder that absorbs water in each bubble that absorbs water can adsorb the steam that enters into fire-retardant power cable effectively, has avoided the emergence of short circuit problem. The oxidation powder in the oxidation bubble can effectively adsorb oxygen entering the flame-retardant power cable, so that the flame-retardant power cable is prevented from being oxidized and corroded. The shielding belt can shield interference of external electromagnetic waves to the flame-retardant power cable, the heat insulation layer can isolate external high temperature, and the high-temperature resistance and flame retardance of the flame-retardant power cable are improved. The shaping net performs shaping and protection effects on the high-temperature-resistant filling layer. The high-temperature-resistant filling layer effectively isolates the wire core, and the wire core is completely wrapped while the heat insulation and flame retardation are realized. The fireproof layer, the soft flame-retardant isolation belt and the flame retardant play a further role in protecting the electric conductor, and the high-temperature resistance and flame retardance of the flame-retardant power cable are further improved.
Drawings
FIG. 1 is a schematic structural view of a flame retardant power cable according to one embodiment;
fig. 2 is a schematic structural diagram of the wire core in the embodiment of fig. 1.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 1 and fig. 2 together, the present invention provides a flame-retardant power cable 10, wherein the flame-retardant power cable 10 includes, in order from inside to outside: the cable comprises a plurality of cable cores 100, a high-temperature-resistant filling layer 200, a shaping net 300, a heat insulation layer 400, a shielding tape 500, an anti-oxidation layer 600 and an insulating protective sleeve 700.
Each wire core 100 is uniformly accommodated in the high temperature resistant filling layer 200. In this embodiment, the refractory filler layer 200 is made of fire-proof mud. The fire-proof mud is a flexible flame-retardant material and has the characteristic of high fire resistance limit. In addition, the fireproof mud has good fire resistance, smoke blockage, oil resistance, water resistance and corrosion resistance. Toughness reinforcing yarns are arranged in the high-temperature-resistant filling layer 200, and the toughness reinforcing yarns increase the toughness and the structural stability of the high-temperature-resistant filling layer 200. In this example, the tenacity-enhancing yarn is an aramid yarn. The aramid yarn has the excellent performances of small density, high tensile modulus, high breaking strength, low breaking elongation and the like. The aramid yarn can maintain inherent stability, low shrinkage and low creep performance at higher temperature. In addition, the aramid yarn has high corrosion resistance, high insulation and strong chemical resistance.
The sizing net 300 is disposed on the high temperature-resistant filling layer 200, and is used for sizing and protecting the high temperature-resistant filling layer 200. In this embodiment, the sizing net 300 is a galvanized steel wire woven net. The zinc-coated wire mesh grid may increase the structural strength of the flame retardant power cable 10. The sizing net 300 is accommodated in the heat insulating layer 400. In this embodiment, the thermal insulation layer 400 is a mica thermal insulation tape. The mica heat-insulating tape is a high-performance mica insulating product and has excellent high-temperature resistance and combustion resistance. Specifically, the heat insulation layer 400 is a mica powder tape, and the mica powder tape has good flexibility in a normal state so as to ensure that the folding-resistant flame-retardant cable has good toughness.
In this embodiment, the oxidation preventing layer 600 is a flame retardant silicone layer. Specifically, a plurality of water absorption bubbles 601 and a plurality of oxidation bubbles 602 are formed in the oxidation preventing layer 600, each water absorption bubble 601 and each oxidation bubble 602 are uniformly and separately arranged in the oxidation preventing layer 600, and the oxidation preventing layer 600 is provided with water absorbing powder in each water absorption bubble 601, in this embodiment, the water absorbing powder is water absorbing resin powder. It should be noted that the absorbent powder does not fill the entire absorbent foam 601, because the absorbent powder will swell to some extent after absorbing water. The oxidation preventing layer 600 is provided with oxidation powder in each oxidation bubble 602. In this embodiment, the oxidized powder is iron powder. It should be noted that the oxide powder is not completely filled in the oxide bubbles 602, because the oxide powder absorbs water and then expands to some extent. The oxidation-preventing layer 600 is accommodated in the insulating sheath 700, and in this embodiment, the insulating sheath 700 is a cross-linked polyethylene sleeve having good comprehensive properties such as mechanical properties, environmental stress cracking resistance, chemical corrosion resistance, creep resistance, and electrical properties. A plurality of wear resistant strips 710 are uniformly arranged in the insulating protective cover 700 to further increase the structural strength and wear resistance of the insulating protective cover 700. In this embodiment, the wear resistant strips 710 are wear resistant rubber strips.
The core 100 includes a plurality of conductive wires 110, a soft flame-retardant isolation tape 120 and a fire-proof layer 130 from inside to outside in sequence. A flame retardant is disposed on the surface of each conductive wire 110, and each conductive wire 110 is twisted and contained in the soft flame retardant isolation tape 120. The fire-proof layer 130 is disposed on the surface layer of the soft fire-retardant isolation belt 120. In this embodiment, the soft flame retardant barrier tape 120 is a soft flame retardant rubber tape. The fire-proof layer 130 is fire-proof paint, and the fire-proof paint and the fire retardant disposed on the surface layer of each conductive wire 110 further increase the high-temperature resistance and fire-retardant performance of the soft fire-retardant isolation strip 120.
Above-mentioned fire-retardant power cable 10, insulating lag 700 has played the effect insulating and protection to fire-retardant power cable 10, and in oxidation-resistant coating 600, the powder that absorbs water in each bubble 601 that absorbs water can adsorb the steam that enters into fire-retardant power cable 10 effectively, has avoided the emergence of short circuit problem. The oxidation powder in the oxidation bubble 602 can effectively adsorb oxygen entering the flame-retardant power cable 10, thereby preventing the flame-retardant power cable 10 from being oxidized and corroded. The shielding tape 500 may shield interference of external electromagnetic waves to the flame-retardant power cable 10, and the thermal insulation layer 400 may isolate external high temperature, increasing the high temperature resistance and flame retardancy of the flame-retardant power cable 10. The sizing net 300 performs sizing and protection functions on the high temperature resistant filling layer 200. The high temperature-resistant filling layer 200 effectively isolates the wire core 100, and completely wraps the wire core 100 while insulating heat and retarding flame. The fire-proof layer 130, the soft fire-retardant isolation belt 120 and the fire retardant play a further role in protecting the conductive wire 110, and further improve the high-temperature resistance and fire-retardant performance of the fire-retardant power cable 10.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a fire-retardant power cable which characterized in that includes from inside to outside in proper order: the cable comprises a plurality of cable cores, a high-temperature-resistant filling layer, a sizing net, a heat insulation layer, a shielding belt, an anti-oxidation layer and an insulating protective sleeve;
each wire core is uniformly accommodated in the high-temperature-resistant filling layer; the high-temperature-resistant filling layer is internally provided with toughness reinforcing yarns, and the sizing net is arranged on the high-temperature-resistant filling layer; the shaping net is accommodated in the heat insulation layer; the shielding belt is arranged on the heat insulation layer through sealing glue; the shielding belt is accommodated in the anti-oxidation layer and is connected with the anti-oxidation layer through a sealant; the anti-oxidation layer is internally provided with a plurality of water absorption bubbles and a plurality of oxidation bubbles, the water absorption bubbles and the oxidation bubbles are uniformly and separately arranged in the anti-oxidation layer, water absorption powder is arranged in each water absorption bubble of the anti-oxidation layer, and oxidation powder is arranged in each oxidation bubble of the anti-oxidation layer; the anti-oxidation layer is contained in the insulating protective sleeve, and a plurality of wear-resistant strips are uniformly arranged in the insulating protective sleeve;
the wire core sequentially comprises a plurality of conductive wires, a soft flame-retardant isolation belt and a fireproof layer from inside to outside; the surface layer of each conductive wire is provided with a flame retardant, and each conductive wire is twisted and contained in the soft flame-retardant isolation belt; the fire-proof layer is arranged on the surface layer of the soft flame-retardant isolation belt.
2. The flame retardant power cable of claim 1 wherein the tenacity-enhancing yarn is an aramid yarn.
3. The flame retardant power cable of claim 1 wherein the sizing mesh is a zinc coated wire mesh grid.
4. The flame retardant power cable of claim 1 wherein the high temperature resistant filler layer is a fire clay.
5. The flame retardant power cable of claim 1 wherein the insulation layer is a mica insulation tape.
6. The flame retardant power cable of claim 1 wherein the oxidized powder is iron powder.
7. The flame retardant power cable of claim 1, wherein the shielding tape is aluminum foil tape.
8. The flame retardant power cable of claim 1 wherein the abrasion resistant strips are abrasion resistant rubber strips.
9. The flame retardant power cable of claim 1, wherein the oxidation resistant layer is a flame retardant silicone layer.
10. The flame-retardant power cable according to claim 1, wherein the water-absorbent powder is a water-absorbent resin powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122454451.0U CN216084404U (en) | 2021-10-12 | 2021-10-12 | Flame-retardant power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122454451.0U CN216084404U (en) | 2021-10-12 | 2021-10-12 | Flame-retardant power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216084404U true CN216084404U (en) | 2022-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122454451.0U Active CN216084404U (en) | 2021-10-12 | 2021-10-12 | Flame-retardant power cable |
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| CN (1) | CN216084404U (en) |
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2021
- 2021-10-12 CN CN202122454451.0U patent/CN216084404U/en active Active
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