CN211907006U - Copper core crosslinked polyethylene insulated cold-resistant flame-retardant flexible cable - Google Patents
Copper core crosslinked polyethylene insulated cold-resistant flame-retardant flexible cable Download PDFInfo
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- CN211907006U CN211907006U CN201922467837.8U CN201922467837U CN211907006U CN 211907006 U CN211907006 U CN 211907006U CN 201922467837 U CN201922467837 U CN 201922467837U CN 211907006 U CN211907006 U CN 211907006U
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Abstract
The utility model discloses a copper core crosslinked polyethylene insulated cold-resistant flame-retardant flexible cable, which comprises a polyurethane elastic filler, wherein three slotted holes are formed on the polyurethane elastic filler at equal intervals along the edge, and an insulated wire core is correspondingly arranged in each slotted hole; filling a heat-insulating cotton felt in a gap between the slot hole and the insulated wire core; the polyurethane elastic filler is characterized in that a first flame-retardant composite belt is extruded outside the polyurethane elastic filler, a non-hygroscopic cold-resistant wrapping belt is wrapped outside the flame-retardant composite belt, a cross-linked polyolefin inner sheath is extruded outside the non-hygroscopic cold-resistant wrapping belt, a braided metal shielding reinforcing layer is arranged outside the cross-linked polyolefin inner sheath, a second flame-retardant composite belt is wrapped outside the braided metal shielding reinforcing layer, and a polyurethane outer sheath is extruded outside the second flame-retardant composite belt. The utility model has the advantages of good cold resistance, this rubber still has tensile strength height simultaneously, and is fire-resistant, corrosion-resistant, serious safety problems such as sclerosis, fracture, embrittlement can not appear for the cable can use in cold areas.
Description
Technical Field
The utility model relates to a cable field, concretely relates to fire-retardant flexible cable of insulating cold-resistant type of copper core crosslinked polyethylene.
Background
As the footprint of human exploration extends around the world, the application of electricity also extends to every corner of the world, and there is little natural concern about cold and high-cold zones.
The power cable is erected in the open air under the normal condition, is greatly influenced by the natural environment, especially the power cable erected in the open air in a severe cold area with the temperature of 20 ℃ below zero in winter is not enough in the cold resistance of an external insulating layer and a sheath layer, and the problems of cracking, aging and the like easily occur, so that the service life of the matched power cable is far shorter than the expected service life, the power cable is frequently maintained or replaced, the use cost of a user is increased on the one hand, the power supply quality is reduced on the other hand, and the biggest problem is the potential safety hazard.
At present, most cables are only suitable for in the narrower normal atmospheric temperature ring of a temperature range, in the severe safety problems such as sclerosis, fracture, embrittlement can appear in severe cold district, and direct can influence the fire resistance of cable, and the fire resistance effect is relatively poor, and in the cable working process, meet open flame and will burn or the high nature of self temperature, cause its current-carrying capacity to reduce, will no longer be applicable to in the severe cold environment, and this will be a very big difficult problem to the power supply in severe cold district.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the copper core crosslinked polyethylene insulated cold-resistant flame-retardant flexible cable is provided.
The technical scheme is as follows: in order to achieve the purpose, the utility model provides a copper core crosslinked polyethylene insulated cold-resistant flame-retardant flexible cable, which comprises a polyurethane elastic filling body, wherein three slotted holes are arranged on the polyurethane elastic filling body at equal intervals along the edge, and an insulated wire core is correspondingly arranged in each slotted hole; filling a heat-insulating cotton felt in a gap between the slot hole and the insulated wire core; the polyurethane elastic filler is characterized in that a first flame-retardant composite belt is extruded outside the polyurethane elastic filler, a non-hygroscopic cold-resistant wrapping belt is wrapped outside the flame-retardant composite belt, a cross-linked polyolefin inner sheath is extruded outside the non-hygroscopic cold-resistant wrapping belt, a braided metal shielding reinforcing layer is arranged outside the cross-linked polyolefin inner sheath, a second flame-retardant composite belt is wrapped outside the braided metal shielding reinforcing layer, and a polyurethane outer sheath is extruded outside the second flame-retardant composite belt.
Furthermore, the first flame-retardant composite belt and the second flame-retardant composite belt are both formed by compounding middle heat-insulating cotton, glass fiber belts compounded on the upper surface and the lower surface of the middle heat-insulating cotton through adhesives and aluminum silicate fiber belts.
Further, the braided metal shielding reinforcing layer is composed of a plurality of steel wires and a braided belt for braiding the steel wires together.
Furthermore, the braided belt is formed by warp and weft weaving of glass fibers and basalt fibers.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the conductor adopts a category 5 tinned soft conductor, so that the finished product is soft and bendable, the requirement of laying and bending is met, and meanwhile, the corrosion resistance of the cable can be improved by tinning the conductor;
2. the cable has cold resistance from inside to outside by adopting the non-hygroscopic cold-resistant wrapping tape from the filling of the non-hygroscopic cold-resistant wrapping tape, the outermost layer of the wire core and the non-hygroscopic cold-resistant wrapping tape from the inner sheath;
3. the polyester film isolation layer is adopted, so that the cable has the excellent characteristics of high strength, impact resistance, environmental aging resistance, prestress crack, corrosion resistance, low temperature resistance, easiness in welding, simplicity and convenience in construction, strict sealing and no leakage, light volume weight, high strength, heat insulation, sound insulation, flame retardance, cold resistance, corrosion resistance, no water absorption, simplicity and convenience in construction and the like, and in addition, the polyurethane material is adaptive to the temperature of +120 ℃ to-196 ℃, so that the communication signal transmission of the cable is interrupted due to icing in ice and snow weather, and irrecoverable economic loss is caused;
4. the non-magnetic metal band is adopted, so that the fire resistance and the external impact resistance of the cable are enhanced; the best shielding protective layer can prevent the cable from interfering other cables and can also prevent the external magnetic field from interfering the cable;
5. the rubber insulating layer is adopted, so that the cable has high elasticity, low permeability to gas, moisture and water, high chemical stability and electrical performance, and particularly the high elasticity of the rubber enables the cable to have excellent bending performance;
6. adopt cold-resistant polyolefin inner sheath and cold-resistant rubber oversheath for the cable has good cold-resistant performance, is applicable to the use of continuous persistence under the low temperature condition, and this rubber still has tensile strength height simultaneously, and advantages such as fire-resistant, corrosion-resistant can not appear hardening, fracture, serious safety problems such as embrittlement, makes the cable can use in cold areas.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a polyurethane elastic filler;
fig. 3 is a schematic structural view of the flame retardant composite 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. 1-2, the utility model provides a copper core crosslinked polyethylene insulated cold-resistant flame-retardant flexible cable, which comprises a polyurethane elastic filler 1, wherein three slotted holes 2 are arranged on the polyurethane elastic filler at equal intervals along the edge, and an insulated wire core is correspondingly arranged in each slotted hole; the insulated wire core is composed of a copper conductor 3 and a crosslinked polyethylene insulating layer 4 extruded outside the copper conductor; the gap between the slot hole and the insulated wire core is filled with the heat insulation cotton felt 5, so that the insulation structure has the advantages of high heat insulation rate, wind resistance, rain and snow resistance, ageing resistance, flame resistance, strong water dripping property, dust resistance, moisture resistance, acid and alkali resistance, and provides a buffer capacity for resisting extrusion for the insulated wire core; the first flame-retardant composite belt 6 is extruded outside the polyurethane elastic filling body, and the non-hygroscopic cold-resistant belt 7 is wrapped outside the first flame-retardant composite belt, so that the cable has low permeability to gas, moisture and water, and the cold resistance of the cable is improved; the cross-linked polyolefin inner sheath 8 is extruded outside the non-hygroscopic cold-resistant wrapping tape, the braided metal shielding reinforcing layer is arranged outside the cross-linked polyolefin inner sheath and consists of a plurality of steel wires 9 and a braided tape 10 which is formed by braiding the plurality of steel wires together, and the braided tape is formed by warp and weft braiding glass fibers and basalt fibers, so that the fire resistance and the flame retardance of the cable and the external impact resistance are enhanced, and the best shielding protective layer can prevent the cable from interfering other cables and the external magnetic field from interfering the cable; the second flame-retardant composite belt 11 is wrapped outside the woven metal shielding reinforcing layer, the polyurethane outer sheath 12 is extruded outside the second flame-retardant composite belt, an inner and outer cold-resistant structure is formed by the second flame-retardant composite belt and the polyurethane elastic filler, the cable has good cold resistance, is suitable for continuous use under a low-temperature condition, is low in density, soft in texture, excellent in wear resistance, excellent in bending resistance, good in oil resistance and the like, and can not cause serious safety problems such as hardening, cracking, embrittlement and the like, so that the cable can be used in cold regions.
As shown in figure 3, the flame-retardant composite belts are formed by compounding middle heat-insulating cotton 13, glass fiber belts 14 and aluminum silicate fiber belts 15 which are compounded on the upper surface and the lower surface of the middle heat-insulating cotton through adhesives, so that the cold resistance of the cable is improved, and the flame-retardant and fire-resistant performance of the cable is also improved.
The utility model discloses the concrete application way is many, and the above-mentioned only is the preferred embodiment of the utility model, should point out, to ordinary skilled person in this technical field, under the prerequisite that does not deviate from the utility model discloses the principle, can also make a plurality of improvements, and these improvements also should be regarded as the utility model discloses a scope of protection.
Claims (5)
1. The utility model provides a fire-retardant flexible cable of copper core crosslinked polyethylene insulation cold-resistant type which characterized in that: the cable comprises a polyurethane elastic filling body, wherein three slotted holes are formed in the polyurethane elastic filling body at equal intervals along the edge, and an insulating wire core is correspondingly arranged in each slotted hole; filling a heat-insulating cotton felt in a gap between the slot hole and the insulated wire core; the polyurethane elastic filler is characterized in that a first flame-retardant composite belt is extruded outside the polyurethane elastic filler, a non-hygroscopic cold-resistant wrapping belt is wrapped outside the first flame-retardant composite belt, a cross-linked polyolefin inner sheath is extruded outside the non-hygroscopic cold-resistant wrapping belt, a braided metal shielding reinforcing layer is arranged outside the cross-linked polyolefin inner sheath, a second flame-retardant composite belt is wrapped outside the braided metal shielding reinforcing layer, and a polyurethane outer sheath is extruded outside the second flame-retardant composite belt.
2. The copper core crosslinked polyethylene insulated cold-resistant flame-retardant flexible cable according to claim 1, characterized in that: the insulated wire core is composed of a copper conductor and a crosslinked polyethylene insulated layer extruded outside the copper conductor.
3. The copper core crosslinked polyethylene insulated cold-resistant flame-retardant flexible cable according to claim 1, characterized in that: the first flame-retardant composite belt and the second flame-retardant composite belt are both formed by compounding middle heat-insulating cotton, glass fiber belts compounded on the upper surface and the lower surface of the middle heat-insulating cotton through adhesives and aluminum silicate fiber belts.
4. The copper core crosslinked polyethylene insulated cold-resistant flame-retardant flexible cable according to claim 1, characterized in that: the braided metal shielding reinforcing layer is composed of a plurality of steel wires and a braided belt for braiding the steel wires together.
5. The copper core crosslinked polyethylene insulated cold-resistant flame-retardant flexible cable according to claim 4, characterized in that: the braided belt is formed by warp and weft weaving of glass fibers and basalt fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922467837.8U CN211907006U (en) | 2019-12-31 | 2019-12-31 | Copper core crosslinked polyethylene insulated cold-resistant flame-retardant flexible cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922467837.8U CN211907006U (en) | 2019-12-31 | 2019-12-31 | Copper core crosslinked polyethylene insulated cold-resistant flame-retardant flexible cable |
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| Publication Number | Publication Date |
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| CN211907006U true CN211907006U (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922467837.8U Active CN211907006U (en) | 2019-12-31 | 2019-12-31 | Copper core crosslinked polyethylene insulated cold-resistant flame-retardant flexible cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112927848A (en) * | 2021-01-25 | 2021-06-08 | 郭智昊 | Copper clad aluminum conductor low-smoke halogen-free A-class flame-retardant power cable |
-
2019
- 2019-12-31 CN CN201922467837.8U patent/CN211907006U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112927848A (en) * | 2021-01-25 | 2021-06-08 | 郭智昊 | Copper clad aluminum conductor low-smoke halogen-free A-class flame-retardant power cable |
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