CN215770670U - Halogen-free low-smoke flame-retardant power cable with cross-linked polyethylene insulating polyolefin sheath - Google Patents
Halogen-free low-smoke flame-retardant power cable with cross-linked polyethylene insulating polyolefin sheath Download PDFInfo
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- CN215770670U CN215770670U CN202121762647.XU CN202121762647U CN215770670U CN 215770670 U CN215770670 U CN 215770670U CN 202121762647 U CN202121762647 U CN 202121762647U CN 215770670 U CN215770670 U CN 215770670U
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Abstract
The utility model discloses a cross-linked polyethylene insulated polyolefin sheath halogen-free low-smoke flame-retardant power cable which comprises a main body component and a low-smoke flame-retardant component, wherein the main body component comprises a circular groove fixing plate body, a supporting rod, a first cross-linked polyethylene insulating layer, a flame-retardant layer and a copper conductor. The second crosslinked polyethylene insulating layer is made of polyethylene; the performance of the PE modified by crosslinking can be greatly improved, the comprehensive performances of the PE, 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, the heat resistance temperature of the PE can be improved to more than 100 ℃ from 70 ℃, the polyolefin resin layer is made of polyolefin resin, and the polyolefin resin can be completely combusted in the air to generate only CO2 and H2O without generating atmospheric pollutants, so that the cable can be subjected to flame retardance, and meanwhile, the aim of preventing harmful gas from being generated during combustion of the cable can be fulfilled.
Description
Technical Field
The utility model relates to the technical field of power cables, in particular to a cross-linked polyethylene insulated polyolefin sheath halogen-free low-smoke flame-retardant power cable.
Background
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 transmission lines under river-crossing seawater;
in the power line, the proportion of the cable is gradually increasing; power cables are cable products used in the trunk lines of power systems to transmit and distribute high-power electrical energy;
when the existing power cable is used, if the existing power cable meets an extreme environment suddenly, the cable is easy to self-ignite, and a large amount of smoke and harmful substances are generated during self-ignition.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a cross-linked polyethylene insulated polyolefin sheath halogen-free low-smoke flame-retardant power cable to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: the halogen-free low-smoke flame-retardant power cable with the cross-linked polyethylene insulating polyolefin sheath comprises a main body component and a low-smoke flame-retardant component, wherein the main body component comprises a circular groove fixing plate body, a supporting rod, a first cross-linked polyethylene insulating layer, a flame-retardant layer and a copper conductor;
a low-smoke flame-retardant component is arranged outside the main body component;
the low-smoke flame-retardant component comprises a halogen-free low-smoke flame-retardant protective sleeve, a second cross-linked polyethylene insulating layer, a polyolefin resin layer and a rubber anti-seismic layer;
the inner side wall of the halogen-free low-smoke flame-retardant protective sleeve is bonded to the outer side wall of the second crosslinked polyethylene insulating layer, and the inner side wall of the second crosslinked polyethylene insulating layer is bonded to the outer side wall of the polyolefin resin layer.
Preferably: the material that the inside wall of polyolefin resin layer bonds in the material of the lateral wall polyolefin resin layer of rubber antidetonation layer is polyolefin resin, and complete combustion only produces CO and HO in the air, does not produce atmospheric pollutants.
Preferably: four through-holes have been seted up to the mutual symmetry of front surface of circular recess fixed plate body, the inside wall laminating of through-hole in the lateral wall of first crosslinked polyethylene insulating layer, the front surface of circular recess fixed plate body runs through there is the bracing piece, through the setting of through-hole, conveniently carries on spacingly to first crosslinked polyethylene insulating layer.
Preferably: the outer side wall of the circular groove fixing plate body is symmetrically bonded with the flame-retardant shock absorbing layer, and the circular groove fixing plate body is arranged to further prevent the copper conductor from being bent and damaged.
Preferably: the outer side wall of the copper conductor is bonded with a flame-retardant layer, the outer side wall of the flame-retardant layer is bonded with the inner side wall of the first crosslinked polyethylene insulating layer, the flame-retardant layer is made of flame-retardant rubber, and the flame-retardant rubber is rubber with flame retardancy and flame retardance; the flame-retardant polymer is used in combination with the flammable rubber to improve the flame retardancy, increase the crosslinking density of the vulcanized rubber, and also improve the flame resistance.
Preferably: the lateral wall on fire-retardant layer of moving away to avoid possible earthquakes bonds and has woven shielding layer, four spouts have been seted up to woven shielding layer's inside wall symmetry each other, the inside wall sliding connection of spout has rubber slide, rubber slide's lower surface bond in the lateral wall of circular recess fixed plate body slides in the spout through rubber slide to supplementary circular recess fixed plate body removes the change.
Preferably: the inside wall bonding of rubber antidetonation layer has the armor, through the setting of armor for the inside injury not of protection cable.
Preferably: the waterproof layer is bonded on the outer side wall of the braided shielding layer, the outer side wall of the waterproof layer is bonded on the inner side wall of the armor layer, epoxy resin with waterproof performance is coated on the waterproof layer through the waterproof layer, the waterproof layer can be effectively cooled, the service life is prolonged, and meanwhile the phenomenon of water leakage during water cooling work can be effectively prevented.
Compared with the prior art, the utility model has the beneficial effects that:
the second crosslinked polyethylene insulating layer is made of polyethylene; the performance of the PE modified by crosslinking can be greatly improved, the comprehensive performances of the PE, 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, the heat resistance temperature of the PE can be improved to more than 100 ℃ from 70 ℃, the polyolefin resin layer is made of polyolefin resin, and the polyolefin resin can be completely combusted in the air to generate only CO2 and H2O without generating atmospheric pollutants, so that the cable can be subjected to flame retardance, and meanwhile, the aim of preventing harmful gas from being generated during combustion of the cable can be fulfilled.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the area A of FIG. 1 according to the present invention;
FIG. 3 is an enlarged view of the area B of FIG. 1 according to the present invention;
FIG. 4 is a schematic perspective side view of the present invention;
FIG. 5 is a schematic perspective view of the present invention;
FIG. 6 is a schematic side-view expanded structure of the present invention.
In the figure: 1. a body assembly; 101. the plate body is fixed by the circular groove; 102. a support bar; 103. a first crosslinked polyethylene insulating layer; 104. a flame retardant layer; 105. a copper conductor; 2. a low smoke flame retardant component; 201. a halogen-free low-smoke flame-retardant protective sleeve; 202. a second crosslinked polyethylene insulating layer; 203. a polyolefin resin layer; 204. a rubber anti-seismic layer; 3. a through hole; 4. weaving a shielding layer; 5. a waterproof layer; 6. a chute; 7. a rubber slider; 8. an armor layer; 9. a flame-retardant shock-absorbing layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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 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.
Examples
Referring to fig. 1-6, the present invention provides a technical solution: the halogen-free low-smoke flame-retardant power cable with the cross-linked polyethylene insulating polyolefin sheath comprises a main body component 1 and a low-smoke flame-retardant component 2, wherein the main body component 1 comprises a circular groove fixing plate body 101, a supporting rod 102, a first cross-linked polyethylene insulating layer 103, a flame-retardant layer 104 and a copper conductor 105;
the exterior of the main body component 1 is provided with a low-smoke flame-retardant component 2;
the low-smoke flame-retardant component 2 comprises a halogen-free low-smoke flame-retardant protective sleeve 201, a second cross-linked polyethylene insulating layer 202, a polyolefin resin layer 203 and a rubber anti-seismic layer 204;
the inner side wall of the halogen-free low-smoke flame-retardant protective sleeve 201 is bonded to the outer side wall of the second crosslinked polyethylene insulating layer 202, and the inner side wall of the second crosslinked polyethylene insulating layer 202 is bonded to the outer side wall of the polyolefin resin layer 203.
In this embodiment, specifically: the inside wall of polyolefin resin layer 203 bonds in the lateral wall of rubber antidetonation layer 204, and the material of polyolefin resin layer 203 is polyolefin resin, and complete combustion only generates CO2 and H2O in the air, does not generate atmospheric pollutants, and wherein the setting of rubber antidetonation layer 204, the surface of rubber antidetonation layer 204 are equipped with circular lug to reach antidetonation effect, the safety of protection cable.
In this embodiment, specifically: four through-holes 3 have been seted up to the mutual symmetry of front surface of circular recess fixed plate body 101, and the inside wall laminating of through-hole 3 in the lateral wall of first crosslinked polyethylene insulating layer 103, and the front surface of circular recess fixed plate body 101 runs through there is bracing piece 102, through the setting of through-hole 3, conveniently carries on spacingly to first crosslinked polyethylene insulating layer 103, and wherein the setting of bracing piece 102 for protection copper conductor 105 prevents copper conductor 105 damage of buckling.
In this embodiment, specifically: the outer side walls of the circular groove fixing plate body 101 are symmetrically adhered with flame-retardant shock-absorbing layers 9, and the circular groove fixing plate body 101 is used for further preventing the copper conductor 105 from being bent and damaged, wherein the flame-retardant shock-absorbing layers 9 are made of flame-retardant silica gel, are made of alumina hydrate, calcium carbonate, carbon black and platinum compounds serving as flame retardants, and can be configured into flame-retardant silica gel; the single-component room temperature curing organosilicon sealant is an elastomer after curing; neutral curing, no corrosion to most metals; the heat-resistant and heat-resistant cable has excellent cold and heat alternation resistance, aging resistance and electrical insulation performance; the adhesive layer has excellent moisture-proof, shock-proof, corona-resistant and electric leakage-resistant performances.
In this embodiment, specifically: the outer side wall of the copper conductor 105 is bonded with a flame-retardant layer 104, the outer side wall of the flame-retardant layer 104 is bonded with the inner side wall of the first crosslinked polyethylene insulating layer 103, the flame-retardant layer 104 is made of flame-retardant rubber, and the flame-retardant rubber is rubber with flame retardancy and flame retardance; the flame-retardant polymer is used together with the flammable rubber to improve the flame retardance; increasing the crosslink density of the vulcanizate also increases flame resistance.
In this embodiment, specifically: the lateral wall of fire-retardant shock absorber layer 9 bonds and has woven shielding layer 4, four spouts 6 have been seted up to the mutual symmetry of inside wall of woven shielding layer 4, the inside wall sliding connection of spout 6 has rubber slider 7, rubber slider 7's lower surface bonds in the lateral wall of circular recess fixed plate body 101, slide in spout 6 through rubber slider 7, thereby supplementary circular recess fixed plate body 101 removes the change, wherein the material of woven shielding layer 4 is red copper, be for reducing the influence of outer electromagnetic field to power or communication line.
In this embodiment, specifically: the armor layer 8 is bonded to the inner side wall of the rubber anti-seismic layer 204, and the inner side wall of the rubber anti-seismic layer is arranged through the armor layer 8 and used for protecting the inside of the cable from being damaged.
In this embodiment, specifically: the waterproof layer 5 is bonded on the outer side wall of the braided shielding layer 4, the outer side wall of the waterproof layer 5 is bonded on the inner side wall of the armor layer 8, epoxy resin with waterproof performance is coated on the waterproof layer 5 through the waterproof layer 5, so that the waterproof effect is effectively reduced, the service life is prolonged, and meanwhile, the water leakage phenomenon during water cooling work can be effectively prevented.
In this embodiment, specifically: the first cross-linked polyethylene insulating layer 103 and the second cross-linked polyethylene insulating layer 202 are made of polyethylene; the performance of the PE modified by crosslinking can be greatly improved, the comprehensive performances of the PE, 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, the heat resistance temperature of the PE can be improved from 70 ℃ to more than 100 ℃, and the application field of the PE is greatly expanded.
The working principle or the structural principle, when in use and burning is generated outside, the first crosslinked polyethylene insulating layer 103 and the second crosslinked polyethylene insulating layer 202 are made of polyethylene; the performance of the PE subjected to crosslinking modification can be greatly improved, the comprehensive performances of the PE, 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, the heat resistance temperature of the PE can be improved from 70 ℃ to more than 100 ℃, and flame retardance is facilitated, wherein the polyolefin resin layer 203 is made of polyolefin resin, and can be completely combusted in the air to generate only CO2 and H2O without generating atmospheric pollutants, the rubber anti-seismic layer 204 is arranged, and the outer surface of the rubber anti-seismic layer 204 is provided with a round bump, so that an anti-seismic effect is achieved, the safety of a cable is protected, and the flame-retardant shock-absorbing layer 9 is made of flame-retardant silica gel, is made of aluminum oxide hydrate, calcium carbonate, carbon black and a platinum compound serving as a flame retardant and can be configured into the flame-retardant silica gel; the single-component room temperature curing organosilicon sealant is an elastomer after curing; neutral curing, no corrosion to most metals; the heat-resistant and heat-resistant cable has excellent cold and heat alternation resistance, aging resistance and electrical insulation performance; the glue film has excellent dampproofing, antidetonation, corona resistance, anti electric leakage performance, slides in spout 6 through rubber slider 7 to supplementary circular recess mounting plate body 101 removes the change, and wherein the material of weaving shielding layer 4 is red copper, is for reducing the influence of external electromagnetic field to power or communication line.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The halogen-free low-smoke flame-retardant power cable with the cross-linked polyethylene insulating polyolefin sheath comprises a main body component (1) and a low-smoke flame-retardant component (2), and is characterized in that: the main body component (1) comprises a circular groove fixing plate body (101), a support rod (102), a first crosslinked polyethylene insulating layer (103), a flame-retardant layer (104) and a copper conductor (105);
a low-smoke flame-retardant component (2) is arranged outside the main body component (1);
the low-smoke flame-retardant component (2) comprises a halogen-free low-smoke flame-retardant protective sleeve (201), a second cross-linked polyethylene insulating layer (202), a polyolefin resin layer (203) and a rubber anti-seismic layer (204);
the inner side wall of the halogen-free low-smoke flame-retardant protective sleeve (201) is bonded to the outer side wall of the second crosslinked polyethylene insulating layer (202), and the inner side wall of the second crosslinked polyethylene insulating layer (202) is bonded to the outer side wall of the polyolefin resin layer (203).
2. The cross-linked polyethylene insulated polyolefin sheath halogen-free low-smoke flame-retardant power cable according to claim 1, characterized in that: the inner side wall of the polyolefin resin layer (203) is bonded to the outer side wall of the rubber anti-vibration layer (204).
3. The cross-linked polyethylene insulated polyolefin sheath halogen-free low-smoke flame-retardant power cable according to claim 1, characterized in that: four through holes (3) are symmetrically formed in the front surface of the circular groove fixing plate body (101), the inner side wall of each through hole (3) is attached to the outer side wall of the corresponding first crosslinked polyethylene insulating layer (103), and a supporting rod (102) penetrates through the front surface of the circular groove fixing plate body (101).
4. The cross-linked polyethylene insulated polyolefin sheath halogen-free low-smoke flame-retardant power cable according to claim 1, characterized in that: the outer side walls of the circular groove fixing plate body (101) are symmetrically bonded with flame-retardant shock-absorbing layers (9).
5. The cross-linked polyethylene insulated polyolefin sheath halogen-free low-smoke flame-retardant power cable according to claim 1, characterized in that: and a flame-retardant layer (104) is bonded on the outer side wall of the copper conductor (105), and the outer side wall of the flame-retardant layer (104) is bonded on the inner side wall of the first crosslinked polyethylene insulating layer (103).
6. The cross-linked polyethylene insulated polyolefin sheath halogen-free low-smoke flame-retardant power cable according to claim 4, characterized in that: the lateral wall of fire-retardant shock absorber layer (9) bonds and has woven shielding layer (4), four spout (6) have been seted up to the mutual symmetry of inside wall of woven shielding layer (4), the inside wall sliding connection of spout (6) has rubber slider (7), the lower surface of rubber slider (7) bond in the lateral wall of circular recess fixed plate body (101).
7. The cross-linked polyethylene insulated polyolefin sheath halogen-free low-smoke flame-retardant power cable according to claim 1, characterized in that: and an armor layer (8) is bonded on the inner side wall of the rubber anti-seismic layer (204).
8. The cross-linked polyethylene insulated polyolefin sheath halogen-free low-smoke flame-retardant power cable according to claim 6, characterized in that: the outer side wall of the braided shielding layer (4) is bonded with a waterproof layer (5), and the outer side wall of the waterproof layer (5) is bonded with the inner side wall of the armor layer (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121762647.XU CN215770670U (en) | 2021-07-30 | 2021-07-30 | Halogen-free low-smoke flame-retardant power cable with cross-linked polyethylene insulating polyolefin sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121762647.XU CN215770670U (en) | 2021-07-30 | 2021-07-30 | Halogen-free low-smoke flame-retardant power cable with cross-linked polyethylene insulating polyolefin sheath |
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| CN215770670U true CN215770670U (en) | 2022-02-08 |
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| CN202121762647.XU Active CN215770670U (en) | 2021-07-30 | 2021-07-30 | Halogen-free low-smoke flame-retardant power cable with cross-linked polyethylene insulating polyolefin sheath |
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