CN210403300U - Corrosion-resistant tensile fireproof power cable - Google Patents
Corrosion-resistant tensile fireproof power cable Download PDFInfo
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- CN210403300U CN210403300U CN201921597777.5U CN201921597777U CN210403300U CN 210403300 U CN210403300 U CN 210403300U CN 201921597777 U CN201921597777 U CN 201921597777U CN 210403300 U CN210403300 U CN 210403300U
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Abstract
The utility model discloses a corrosion-resistant tensile fireproof power cable, which comprises a cable core, wherein the cable core is formed by stranding a plurality of insulation wire cores; the cable comprises a cable core, a cable core gap, a low-smoke halogen-free flame-retardant polyolefin inner sheath, a fireproof composite PP wrapping belt, a low-smoke halogen-free flame-retardant polyolefin inner sheath, a polyester flame-retardant non-woven fabric, a glass fiber fireproof belt and a basalt fiber fireproof belt, wherein the cable core gap is filled with an aging-resistant PP filling rope, the fireproof composite PP wrapping belt is wrapped outside the fireproof composite PP wrapping belt, the polyester flame-retardant non-woven fabric, the glass fiber fireproof belt and the basalt fiber fireproof belt are sequentially wrapped outside the low-smoke halogen-free flame-retardant polyolefin inner sheath, a metal armor layer is. The utility model discloses an intensity, ageing-resistant, chemical corrosion resistance, fire-retardant, fire behavior are all the optimum for this cable has gained further improvement in fireproof cable, is fit for the demand in market.
Description
Technical Field
The utility model relates to a wire and cable field, concretely relates to corrosion-resistant tensile fire prevention power cable.
Background
With the continuous development of economy and the continuous improvement of living standard of people in China, the consumption concept and the consumption standard of people are greatly changed and improved. Under the trigger, the fireproof cable industry is rapidly developed, and from the two years of market scale development, the fireproof cable industry is rapidly developing.
The fire-proof cable, which is a generic term of wire and cable with fire-proof performance in a broad sense, refers to a type of wire and cable that can directly or indirectly reduce the loss of fire under the condition of fire, and is generally classified into fire-retardant wire and cable and fire-proof wire and cable, and is fire-retardant, and when the cable is burned under the specified test condition and the fire source is removed, the flame spreads on the cable sample but does not exceed the specified range, and the cable extinguishes itself, i.e. the capability of preventing or delaying the occurrence or spread of the flame. In modern society, people rely on fire and are harmed by fire, so that the fire safety of buildings and materials, including comprehensive wiring systems, is a concern. External fires can damage the integrated wiring system causing transmission interruptions. Meanwhile, the comprehensive wiring system can generate more or less harmful gas and smoke in the flame and can also help the fire to gradually spread to other floors or other rooms.
The cable core is formed by many insulation core transposition in the cable, nevertheless must produce the gap between the stranding in-process insulation core, if need not fill the gap with the material, can lead to the cable core unstability, causes the cable core too much to buckle in the use, and the cable sheath material must imbed in the middle of the cable core, influences the life of cable core. Therefore, when the cable is extruded into the sheath, the cable filling rope is usually adopted to fill the cable core gap, so that the roundness of the cable is ensured, meanwhile, the sheath materials used in the extrusion process of the cable sheath are reduced, and the production cost of the cable is reduced; in the prior art, the cable filling rope is mainly formed by twisting a PP rope, has good flexibility, but is easy to react with a cable sheath, oxygen and the like to cause aging. When the cable works, the cable core generates heat due to resistance, so that the temperature of the PP cable filling rope rises, and the aging of the PP cable filling rope is further accelerated;
the cable wrapping tape is a part of the cable, is divided into a non-woven fabric wrapping tape, a plain non-woven fabric wrapping tape, a light non-woven fabric wrapping tape, a thin non-woven fabric wrapping tape and the like, is white in color, and is suitable for power cables, special cables, communication cables, coaxial cables, audio stage cables, optical cables and the like; at present, the present wrapping tape for cable material is not high in tensile strength, poor in corrosion resistance, low in fireproof and waterproof performance, inconvenient to use and not beneficial to popularization and use.
And the existing cable has poor strength, elasticity, fire resistance, aging resistance, high temperature resistance and strong corrosion resistance, so that the service life of the cable is short.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the corrosion-resistant tensile fireproof power cable is provided.
In order to achieve the purpose, the utility model provides a corrosion-resistant tensile fireproof power cable, which comprises a cable core, wherein the cable core is formed by twisting a plurality of insulating wire cores; the cable comprises a cable core, a cable core gap, a fireproof composite PP wrapping tape, a low-smoke halogen-free flame-retardant polyolefin inner sheath, a polyester flame-retardant non-woven fabric, a glass fiber fireproof tape and a second basalt fiber fireproof tape, wherein the cable core gap is filled with an aging-resistant PP filling rope and then wrapped with the fireproof composite PP wrapping tape, the fireproof composite PP wrapping tape is extruded outside the fireproof composite PP wrapping tape, the low-smoke halogen-free flame-retardant polyolefin inner sheath is wrapped with the polyester flame-retardant non-woven fabric, the glass fiber fireproof tape and the second basalt fiber fireproof tape in sequence, a metal armor layer is woven outside the second basalt fiber fireproof tape.
Preferably, the insulated wire core is composed of a graphene superconductor, a crosslinked polyethylene insulating layer extruded outside the graphene superconductor, a semi-conductive shielding layer wrapped outside the crosslinked polyethylene insulating layer, and a first basalt fiber fireproof belt wrapped outside the semi-conductive shielding layer.
Preferably, the aging-resistant pp filling rope comprises a pp rope, a steel wire reinforcing layer is woven outside the pp rope, a rock wool felt is wrapped outside the steel wire reinforcing layer, and a fluorine-silicon modified polyacrylic acid coating is coated outside the rock wool felt.
Preferably, the fireproof composite pp lapping tape comprises a pp tape base body, and a polyester film heat insulation layer and a flame-retardant glass fiber tape are sequentially bonded on the upper surface of the pp tape base body through organic silica gel.
Preferably, the basalt fiber fireproof belt adopts an overlapping wrapping structure, and the overlapping rate is not less than 75%.
Preferably, the thickness of the low-smoke halogen-free flame-retardant polyolefin inner sheath is 3.0mm, and the thickness of the thinnest point is 2.1 mm.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the anti-aging PP filling rope is used for filling, wherein the steel wire reinforcing layer enhances the filling strength, the rock wool felt has good non-inflammability, the melting point is more than 1000 ℃, the rock wool felt is heat-insulated and fireproof, the fluorine-silicon modified polyacrylic acid coating is used as an anti-corrosion flame-retardant layer, the anti-aging capability of the cable filling rope is improved by utilizing the chemical corrosion resistance of the anti-aging flame-retardant layer, and meanwhile, the fluorine-silicon modified polyacrylic acid coating has good flame-retardant performance, so that the cable filling rope also has flame-retardant capability, and the cable core has flame-retardant; thereby making the cable more tensile;
2. the fireproof composite pp wrapping tape is used as a wrapping layer, not only plays a role in tightening a cable, but also has excellent chemical stability, corrosion resistance, sealing property and ageing resistance;
3. the inner sheath made of the low-smoke halogen-free flame-retardant polyolefin flame retardant material ensures that the cable has the advantages of no halogen, low smoke generation, high flame retardance, high elongation at break and good cracking resistance;
4. the three-layer fireproof structure of the polyester flame-retardant non-woven fabric, the glass fiber fireproof belt and the basalt fiber fireproof belt is adopted, so that the fireproof performance of the cable is improved by at least 10 times;
5. the basalt fiber fireproof belts are adopted outside the wire core and the cable core, so that the cable has the characteristics of non-combustion, high temperature resistance (1100 ℃), compact structure, no irritation and the like, can be well protected from a hot fire point and a spark area, and can thoroughly prevent combustion or isolate combustion;
6. the coating is coated with an expansion type fireproof coating, and the coating expands and foams when being heated to form a compact and uniform fireproof heat-insulating layer, so that the fireproof heat-insulating effect is obvious; meanwhile, the coating has excellent physical and chemical properties, and is fast to dry, moisture-resistant, acid-base resistant and water-resistant; the cable has the functions of heat insulation and fire prevention, and the normal operation of the cable is ensured;
7. the outermost layer adopts the hot-dip plastic electric plastic-coated pipe, and the power supply reliability can be greatly improved by virtue of the advantages of high strength, aging resistance, corrosion resistance, long service life and the like, the circuit is protected to be complete, and the cable is prevented from being damaged by external force, so that the service life of the cable is prolonged.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of an aging resistant pp filler rope;
fig. 3 is a schematic structural view of the fireproof composite pp wrapping tape.
Detailed Description
The present invention will be further clarified by the following description with reference to the attached drawings and specific examples, which should be understood as being merely illustrative of the present invention and not limiting the scope of the present invention, and modifications of various equivalent forms of the present invention by those skilled in the art after reading the present invention, all fall within the scope defined by the appended claims of the present application.
As shown in fig. 1, the utility model provides a corrosion-resistant tensile fireproof power cable, which comprises a cable core, wherein the cable core is formed by twisting a plurality of insulated wire cores; the insulated wire core is composed of a graphene superconductor 1, a cross-linked polyethylene insulating layer 2 extruded outside the graphene superconductor, a semi-conductive shielding layer 3 wrapped outside the cross-linked polyethylene insulating layer and a first basalt fiber fireproof belt 4 wrapped outside the semi-conductive shielding layer, so that the cable has the characteristics of non-combustion, high temperature resistance (1100 ℃), compact structure, no irritation and the like, can be well protected from being far away from a hot fire point and a spark area, and can thoroughly prevent combustion or isolate combustion;
the cable is characterized in that a gap of the cable core is filled with an aging-resistant pp filling rope 5 and then is wrapped with a fireproof composite pp wrapping tape 6, a low-smoke halogen-free flame-retardant polyolefin flame-retardant inner sheath 7 is extruded outside the fireproof composite pp wrapping tape, a polyester flame-retardant non-woven fabric 8, a glass fiber fireproof tape 9 and a second basalt fiber fireproof tape 10 are sequentially wrapped outside the low-smoke halogen-free flame-retardant polyolefin flame-retardant inner sheath, an overlapping wrapping structure is adopted, and the overlapping rate is not less than 75%; the metal armor layer 11 is woven outside the second basalt fiber fireproof belt, the outer surface of the metal armor layer is coated with an intumescent fireproof coating to form a fireproof layer 12, and then the fireproof layer is sleeved with a hot-dip plastic electric plastic-coated pipe 13, so that the cable has the advantages of ageing resistance, corrosion resistance, simplicity and convenience in connection and excellent waterproof performance;
as shown in fig. 2, the aging-resistant pp filling rope comprises a pp rope 14, a steel wire reinforcing layer 15 is woven outside the pp rope, a rock wool felt 16 is wrapped outside the steel wire reinforcing layer, and a fluorine-silicon modified polyacrylic acid coating 17 is coated outside the rock wool felt; the strength of the filling is enhanced by the steel wire reinforcing layer, the rock wool felt has good incombustibility, the melting point is above 1000 ℃, the rock wool felt is heat-insulated and fireproof, the fluorine-silicon modified polyacrylic acid coating is used as an anti-corrosion flame-retardant layer, the chemical corrosion resistance of the anti-aging capability of the cable filling rope is improved, and meanwhile, the fluorine-silicon modified polyacrylic acid coating has good flame-retardant performance, so that the cable filling rope also has flame-retardant capability, and the cable core has flame-retardant capability;
as shown in fig. 3, the fireproof composite pp lapping tape comprises a pp tape substrate 18, a polyester film heat insulation layer 19 and a flame-retardant glass fiber tape 20 are sequentially bonded on the upper surface of the pp tape substrate through organic silica gel, and the pp tape substrate of the fireproof composite pp lapping tape faces towards the inner side of a cable; this fire-retardant non-woven fabrics of dacron has intensity height, elasticity is good, the heat resistance is good, the wearability is good, the light fastness is good, it is corrosion-resistant, glass fiber fire prevention fire-retardant cloth has fire proofness good, high temperature resistant, corrosion resisting property is strong, make the cable adopt non-woven fabrics than current cable after the complex, the performance of flame retardant material such as glass fiber is superior 20 times, make in the cable of the same kind, the intensity of this product, ageing-resistant, chemical corrosion resistance, fire-retardant, fire behavior is all the optimum, make this cable gain further improvement in fire prevention cable, be fit for the demand in market.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the principle of the present invention, and these should also be considered as belonging to the protection scope of the present invention.
Claims (6)
1. The corrosion-resistant tensile fireproof power cable comprises a cable core, wherein the cable core is formed by stranding a plurality of insulating wire cores; the fireproof composite PP wrapping tape is wrapped at the gap of the cable core after the anti-aging PP filling rope is filled, a low-smoke halogen-free flame-retardant polyolefin inner sheath is extruded outside the fireproof composite PP wrapping tape, a polyester flame-retardant non-woven fabric, a glass fiber fireproof tape and a second basalt fiber fireproof tape are sequentially wrapped outside the low-smoke halogen-free flame-retardant polyolefin inner sheath, a metal armor layer is woven outside the second basalt fiber fireproof tape, and a hot-dip plastic electric power plastic-coated pipe is sleeved after an expansion type fireproof coating is coated on the outer surface of the metal armor layer to form a fireproof layer.
2. The corrosion-resistant, tensile, and fire-resistant power cable of claim 1, wherein: the insulating wire core is composed of a graphene superconductor, a cross-linked polyethylene insulating layer extruded outside the graphene superconductor, a semi-conductive shielding layer wrapped outside the cross-linked polyethylene insulating layer, and a first basalt fiber fireproof belt wrapped outside the semi-conductive shielding layer.
3. The corrosion-resistant, tensile, and fire-resistant power cable of claim 1, wherein: the anti-aging pp filling rope comprises a pp rope, a steel wire reinforcing layer is woven outside the pp rope, a rock wool felt is wrapped outside the steel wire reinforcing layer, and a fluorine-silicon modified polyacrylic acid coating is coated outside the rock wool felt.
4. The corrosion-resistant, tensile, and fire-resistant power cable of claim 1, wherein: the fireproof composite pp lapping tape comprises a pp tape base body, and a polyester film heat insulation layer and a flame-retardant glass fiber tape are sequentially bonded on the upper surface of the pp tape base body through organic silica gel.
5. The corrosion-resistant, tensile, and fire-resistant power cable of claim 1, wherein: the basalt fiber fireproof belt adopts an overlapping wrapping structure, and the overlapping rate is not less than 75%.
6. The corrosion-resistant, tensile, and fire-resistant power cable of claim 1, wherein: the thickness of the low-smoke halogen-free flame-retardant polyolefin inner sheath is 3.0mm, and the thickness of the thinnest point is 2.1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921597777.5U CN210403300U (en) | 2019-09-25 | 2019-09-25 | Corrosion-resistant tensile fireproof power cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921597777.5U CN210403300U (en) | 2019-09-25 | 2019-09-25 | Corrosion-resistant tensile fireproof power cable |
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| CN210403300U true CN210403300U (en) | 2020-04-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112635117A (en) * | 2020-12-08 | 2021-04-09 | 建业电缆集团有限公司 | Novel fire-blocking wrapping tape for manufacturing fire-blocking layer of fireproof cable and preparation method |
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2019
- 2019-09-25 CN CN201921597777.5U patent/CN210403300U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112635117A (en) * | 2020-12-08 | 2021-04-09 | 建业电缆集团有限公司 | Novel fire-blocking wrapping tape for manufacturing fire-blocking layer of fireproof cable and preparation method |
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