CN206388564U - A kind of isolation middle-high voltage fireproof cable - Google Patents
A kind of isolation middle-high voltage fireproof cable Download PDFInfo
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- CN206388564U CN206388564U CN201720082620.3U CN201720082620U CN206388564U CN 206388564 U CN206388564 U CN 206388564U CN 201720082620 U CN201720082620 U CN 201720082620U CN 206388564 U CN206388564 U CN 206388564U
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Abstract
The utility model discloses a kind of isolation middle-high voltage fireproof cable, each wire includes the conductor being sequentially arranged from inside to outside, conductor shield, insulating barrier, insulation screen, sub-shield, multiple conducting wires are stranded, separation sleeve is coated on outside multiple conducting wires, inorganic mineral packing material, which is coated on outside separation sleeve, forms the cable core with circular cross-section, and lapping layer, flame retardant coating, restrictive coating are coated on outside cable core successively.By the isolation middle-high voltage fireproof cable of above-mentioned optimization design, reasonable in design, flameproof effect is good, cable core electric fields uniform is distributed, multilayer screen greatly improves shielding properties, and sub-shield can carry return cable in system jam, so as to ensure the reliability of power transmission.
Description
Technical field
The utility model is related to field of cable technology, more particularly to a kind of isolation middle-high voltage fireproof cable.
Background technology
Prior art midium voltage cable (voltage class 6/6kV~26/35kV) is typically insulated using crosslinked polyethylene (XLPE).
Cross-linking polyethylene materials Long-term service temperature is 90 DEG C, and softening transform is gradually started at a temperature of 200 DEG C.According to TICW 8-
2012《Rated voltage 6kV (Um=7.2kV) arrives 35kV (Um=40.5kV) extruded insulation fireproof power cable》Standard requirement, in
Press fire-resisting cable must 750 DEG C of flame temperature two blowtorch continuously for fire 90 minutes, cable can not short circuit；After off-test also
3.5U0 pressure tests, which need to be carried out, to be punctured.As can be seen here, insulated wire cores (single) of midium voltage cable or into outside cable core (three
Core) fire lagging need to be set to reduce the temperature that insulation (XLPE) is subject to.
Current technology mainly extrudes ceramics in the insulated wire cores (single) of midium voltage cable or into (three cores) outside cable core
SiClx rubber, Ceramic silicon rubber can sinter porcelain under certain flame temperature, to completely cut off flame temperature.But such a technology is deposited
In very big problem, mainly there are following three points：
1st, midium voltage cable external diameter is big, and Ceramic silicon rubber is not due to having any intensity when rubber extruding machine is extruded, extrusion is stranded very much
Difficulty, fireprotection layer thickness deviation is very big, is extremely difficult to surrounding thickness uniform and have the requirement of certain thickness (being not less than 10mm).
2nd, Ceramic silicon rubber is in sintering process, and intensity is very poor, adds torch flame and blows, and differs into porcelain effect.
3rd, Ceramic silicon rubber is not containing a certain amount of flammable carbon, hydrogen member in complete inorganic material, silicon rubber molecule
Element, during Ceramic silicon rubber sinters porcelain into, releases substantial amounts of heat, has certain destruction to make to the insulation being protected by it
With.
Thus, the middle pressure fire-resisting cable of prior art has a variety of weak points, and its fire resistance can not be accomplished
Stable, the surplus for leaving certain fire safety is even more a kind of luxurious what is said or talked about.
Utility model content
To solve technical problem present in background technology, the utility model proposes a kind of anti-thermoelectricity of isolation mesohigh
Cable.
The utility model proposes a kind of isolation middle-high voltage fireproof cable, including：Cable core, lapping layer, flame retardant coating, sheath
Layer
Cable core includes multiple conducting wires, separation sleeve, inorganic mineral packing material, and each wire is included positioned at center conductor, bag
The conductor shield that overlays on outside conductor, the insulating barrier being coated on outside conductor shield, the insulation being coated on outside insulating barrier
Screen layer, the sub-shield being coated on outside insulation screen, multiple conducting wires are stranded, and separation sleeve is coated on outside multiple conducting wires,
Inorganic mineral packing material, which is coated on outside separation sleeve, forms the cable core with circular cross-section；
Lapping layer is wrapped, and flame retardant coating is coated on outside lapping layer outside the cable core, and restrictive coating is coated on outside flame retardant coating
Portion.
Preferably, sub-shield puts up wrapped formation using steel band is overlapping.
Preferably, steel band is overlapping puts up rate >=15%.
Preferably, lapping layer is formed using aluminium-plastic tape is wrapped.
Preferably, the lapping direction of lapping layer and the direction of lay of multiple conducting wires are opposite.
In the utility model, the isolation middle-high voltage fireproof cable proposed, each wire includes from inside to outside cloth successively
The conductor put, conductor shield, insulating barrier, insulation screen, sub-shield, multiple conducting wires are stranded, and separation sleeve is coated on many
Outside wire, inorganic mineral packing material, which is coated on outside separation sleeve, forms the cable core with circular cross-section, lapping layer, fire resisting
Layer, restrictive coating are coated on outside cable core successively.By the isolation middle-high voltage fireproof cable of above-mentioned optimization design, structure design is closed
Reason, flameproof effect is good, and cable core electric fields uniform distribution, multilayer screen greatly improves shielding properties, and in system event occurs for sub-shield
Return cable can be carried during barrier, so as to ensure the reliability of power transmission.
Brief description of the drawings
Fig. 1 be the utility model proposes a kind of isolation middle-high voltage fireproof cable structural representation.
Embodiment
As shown in figure 1, Fig. 1 be the utility model proposes a kind of isolation middle-high voltage fireproof cable structural representation.
Reference picture 1, the utility model proposes a kind of isolation middle-high voltage fireproof cable, including：It is cable core, lapping layer 1, resistance to
Fire bed 2, restrictive coating 3
Cable core includes multiple conducting wires, separation sleeve 5, inorganic mineral packing material 6, and each wire includes being located at center conductor
41st, the conductor shield 42 outside conductor 41, the insulating barrier 43 being coated on outside conductor shield 42 are coated on, insulation is coated on
Insulation screen 44, the sub-shield 45 that is coated on outside insulation screen 44 outside layer 43, multiple conducting wires are stranded, separation sleeve
5 are coated on outside multiple conducting wires, and inorganic mineral packing material 6 is coated on the outside of separation sleeve 5 and forms the cable core with circular cross-section；
Lapping layer 1 is wrapped outside the cable core, and flame retardant coating 2 is coated on outside lapping layer 1, and restrictive coating 3 is coated on fire resisting
Outside layer 2.
In the present embodiment, the isolation middle-high voltage fireproof cable proposed, each wire includes from inside to outside cloth successively
The conductor put, conductor shield, insulating barrier, insulation screen, sub-shield, multiple conducting wires are stranded, and separation sleeve is coated on many
Outside wire, inorganic mineral packing material, which is coated on outside separation sleeve, forms the cable core with circular cross-section, lapping layer, fire resisting
Layer, restrictive coating are coated on outside cable core successively.By the isolation middle-high voltage fireproof cable of above-mentioned optimization design, structure design is closed
Reason, flameproof effect is good, and cable core electric fields uniform distribution, multilayer screen greatly improves shielding properties, and in system event occurs for sub-shield
Return cable can be carried during barrier, so as to ensure the reliability of power transmission.
In a specific embodiment, sub-shield 45 puts up wrapped formation using steel band is overlapping, and further, steel band is overlapping
Put up rate >=15%, it is ensured that shield effectiveness.
In other embodiments, lapping layer 1 is formed using aluminium-plastic tape is wrapped, is coordinated with sub-shield, real
Existing shield ranges are complementary, further improve shield effectiveness.
In other embodiments, the lapping direction of lapping layer 1 and the direction of lay of multiple conducting wires are on the contrary, work as cable
During by external force, it is ensured that cable core is not loose, so as to improve cable core structure stability.
It is described above, only the utility model preferably embodiment, but protection domain of the present utility model is not
This is confined to, any one skilled in the art is in the technical scope that the utility model is disclosed, according to this practicality
New technical scheme and its utility model design are subject to equivalent substitution or change, should all cover in protection model of the present utility model
Within enclosing.
Claims (5)
1. a kind of isolation middle-high voltage fireproof cable, it is characterised in that including：Cable core, lapping layer (1), flame retardant coating (2), sheath
Layer (3)
Cable core includes multiple conducting wires, separation sleeve (5), inorganic mineral packing material (6), and each wire includes being located at center conductor
(41), be coated on the outside conductor shield (42) of conductor (41), be coated on the outside insulating barrier (43) of conductor shield (42),
It is coated on the outside insulation screen (44) of insulating barrier (43), is coated on the outside sub-shield (45) of insulation screen (44),
Multiple conducting wires are stranded, and separation sleeve (5) is coated on outside multiple conducting wires, and inorganic mineral packing material (6) is coated on separation sleeve (5) outside
Portion forms the cable core with circular cross-section；
Lapping layer (1) is wrapped outside the cable core, and flame retardant coating (2) is coated on lapping layer (1) outside, and restrictive coating (3) is coated on
Flame retardant coating (2) is outside.
2. isolation middle-high voltage fireproof cable according to claim 1, it is characterised in that sub-shield (45) uses steel band
It is overlapping to put up wrapped formation.
3. isolation middle-high voltage fireproof cable according to claim 2, it is characterised in that steel band is overlapping put up rate >=
15%.
4. isolation middle-high voltage fireproof cable according to claim 1, it is characterised in that lapping layer (1) is answered using plastic-aluminum
Crossed belt is wrapped to be formed.
5. isolation middle-high voltage fireproof cable according to claim 1, it is characterised in that the lapping direction of lapping layer (1)
It is opposite with the direction of lay of multiple conducting wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720082620.3U CN206388564U (en) | 2017-01-22 | 2017-01-22 | A kind of isolation middle-high voltage fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720082620.3U CN206388564U (en) | 2017-01-22 | 2017-01-22 | A kind of isolation middle-high voltage fireproof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206388564U true CN206388564U (en) | 2017-08-08 |
Family
ID=59493773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720082620.3U Active CN206388564U (en) | 2017-01-22 | 2017-01-22 | A kind of isolation middle-high voltage fireproof cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN206388564U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109903926A (en) * | 2019-02-26 | 2019-06-18 | 湖北宝上电缆有限公司 | A kind of fire prevention midium voltage cable |
-
2017
- 2017-01-22 CN CN201720082620.3U patent/CN206388564U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109903926A (en) * | 2019-02-26 | 2019-06-18 | 湖北宝上电缆有限公司 | A kind of fire prevention midium voltage cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Isolation middle and high voltage fireproof cable Effective date of registration: 20190620 Granted publication date: 20170808 Pledgee: Merchants Bank Bengbu branch of Limited by Share Ltd Pledgor: Anhui cable fire protection Polytron Technologies Inc Registration number: 2019340000318 |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 233000 Anhui province Bengbu City Longxing Road No. 555 Patentee after: Gaoqiao Fire Protection Technology Co., Ltd Address before: 233000 Anhui province Huai Bengbu City Longxing Road No. 555 Patentee before: Anhui cable fire protection Polytron Technologies Inc |