CN208256354U - A kind of ceramic low smoke and zero halogen electric power ground connection coaxial cable that voltage rating is 8.7/15KV - Google Patents
A kind of ceramic low smoke and zero halogen electric power ground connection coaxial cable that voltage rating is 8.7/15KV Download PDFInfo
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- CN208256354U CN208256354U CN201820758775.9U CN201820758775U CN208256354U CN 208256354 U CN208256354 U CN 208256354U CN 201820758775 U CN201820758775 U CN 201820758775U CN 208256354 U CN208256354 U CN 208256354U
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- ceramic
- coaxial cable
- silicon rubber
- electric power
- low smoke
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Abstract
The utility model belongs to a kind of ceramic low smoke and zero halogen electric power ground connection coaxial cable that voltage rating is 8.7/15KV；Including inner conductor, the outside of inner conductor is successively arranged insulating layer, the first Ceramic silicon rubber flame retardant coating, outer conductor, the second Ceramic silicon rubber flame retardant coating, anti-lightning strike bed course and oversheath；Have the advantages that simple structure and reasonable design, facilitate construction, improve its electrical insulation properties, it is heat-resisting it is good, load capacity is strong, the power cable of non-fusible, resistant to chemical etching, high mechanical strength and effective protection 66/110KV, 127/220KV, 500KV and above.
Description
Technical field
The utility model belongs to electric power applied technical field, and in particular to the ceramics that a kind of voltage rating is 8.7/15KV
Change low smoke and zero halogen electric power ground connection coaxial cable.
Background technique
In recent years, with the rapid growth of Chinese national economy, especially rural area, urban distribution network, city capital construction facility and
Flourishing for real estate, has pushed directly on the development of power industry, therefore, has proposed to the ground connection performance of wire and cable higher
Requirement.Earth cable currently on the market generallys use polyvinyl chloride or general polyethylene；Outer conductor is done using single layer copper wire
Outer conductor；In the case of there is higher impulse overvoltage, crossing high induction voltage and fault overvoltage, especially lightning stroke voltage punching
It hits down, 66/110kV, 127/220KV, 500KV power cable can be operated normally and cause to seriously affect, electricity is even greatly decreased
Cable service life.
Utility model content
The purpose of this utility model is to provide a kind of ceramic low smoke and zero halogen electric power that voltage rating is 8.7/15KV use
It is grounded coaxial cable, to solve the problems mentioned in the above background technology.
To achieve the above object, the utility model provides the following technical solutions:
A kind of ceramic low smoke and zero halogen electric power ground connection coaxial cable that voltage rating is 8.7/15KV, the described coaxial electrical
Cable includes inner conductor, and the outside of inner conductor is successively arranged insulating layer, the first Ceramic silicon rubber flame retardant coating, outer conductor, the second pottery
Porcelain SiClx rubber flame retardant coating, anti-lightning strike bed course and oversheath.
Preferably, the material of the insulating layer is crosslinked polyethylene, and thickness is not less than 4.5mm.
Preferably, the material of the oversheath is ceramic polyolefin jacket material.
Preferably, the material of the inner conductor is copper free wire, and the cross-sectional area of inner conductor 1 is 50mm2~300mm2。
Preferably, the outer conductor is that the double-deck copper free wire winding is worked out, the cross-sectional area and inner conductor of outer conductor
Cross-sectional area it is identical.
Preferably, the anti-lightning strike bed course is the anti-lightning strike bed course of polyurethane.
Preferably, the first Ceramic silicon rubber flame retardant coating and the second Ceramic silicon rubber flame retardant coating are ceramic SiClx
Rubber flame retardant coating, Ceramic silicon rubber flame retardant coating are that two Ceramic silicon rubber fire resistant belts are entwined.
It should be noted that the utility model is cross interconnected suitable for 66/110KV, 127/220KV, 500KV high-tension cable
, for reduce cable metal sheath induced potential, reduce lightning wave or internal overvoltage to 66KV, 110KV~220KV
The harm of high-tension cable.The utility model is mainly used for 66/110KV, 127/220KV, 500KV cable run insulating sheath guarantor
The guard box of protection unit is connected with transposition case, cross interconnected case.The power frequency voltage rating 8.7/15KV of the utility model, transmission & distribution
Route (110kv~500KV) ground connection.The highest of the utility model allows operating temperature: 90 DEG C, (maximum duration does not surpass when short-circuit
Cross 5s) cable conductor maximum temperature be no more than 250 DEG C；Environment temperature should be not less than 0 DEG C when being laid with the utility model, this is practical new
The bending radius of type is not less than 20 times of the outside diameter of cable.
It is same according to the ceramic low smoke and zero halogen electric power ground connection that a kind of voltage rating made of above scheme is 8.7/15KV
Shaft cable can be mentioned effectively by the way that the insulating layer of crosslinked polyethylene material and the oversheath of ceramic polyolefin jacket material is arranged
High electrical insulation properties performance, and have it is heat-resisting it is good, load capacity is strong, non-fusible, resistant to chemical etching, the spy of high mechanical strength
Point, crosslinked polyethylene material can allow long-term operating temperature up to 90 DEG C, up to 250 DEG C when short-circuit；The insulation of crosslinked polyethylene
Performance is so that cable insulation polyethylene molecule by linearity molecular structure is changed into main body netted using chemically or physically
Molecular structure, i.e., thermoplastic polyethylene are changed into heat cured crosslinked polyethylene, to greatly improve its heat resistance and machine
Tool performance reduces its shrinkage, not re-melting after keeping its heated, and maintains excellent electric property, thus its
Heat-resisting, mechanical properties have good superiority；And it is nontoxic, do not pollute, do not stimulate skin and eyes that there is environmental-protection function.Pottery
Porcelain polyolefin jacket material has the characteristics that low smoke and zero halogen, heavy metal free, non-toxic and tasteless and meet RoHS standard requirements, because
It can be effectively isolated thermal-flame and invade line-internal with excellent electric isolution performance and fabulous oxygen barrier heat insulation
Evil, delays the decomposition of internal material, conductor is avoided to fuse in flame, guarantees route in case of fire unimpeded；For fire
In data transmission more times are provided, effectively prevent data to be lost, ensure transmission and the electrical equipment of information and electric power
With the safety of route.In addition, the first Ceramic silicon rubber flame retardant coating 3 and the second Ceramic silicon rubber flame retardant coating 5 are respectively two
Ceramic silicon rubber fire resistant belt is entwined, and specific two Ceramic silicon rubber fire resistant belts are divided into two layers and are wound, and two layers
It stacks together and collectively forms Ceramic silicon rubber flame retardant coating, generate 650 DEG C of high temperature or more of temperature or flame under high currents
Under the conditions of, above structure can be quickly generated complete ceramic-like shell, and bending strength is greater than up to 10MPa, dielectric strength
20kV/mm, volume resistivity are higher than 5 × 1013 Ω cm；It avoids conductor from fusing in flame, guarantees route in case of fire
It is unimpeded.In addition, outer conductor is worked out using the double-deck copper free wire winding, brass wire diameter can be made to reduce to increase softness
Degree facilitates copper wire and power cable metal sheath to weld.The utility model has simple structure and reasonable design, facilitates construction, mentions
Its high electrical insulation properties, it is heat-resisting it is good, load capacity is strong, non-fusible, resistant to chemical etching, high mechanical strength and effective protection 66/
The advantages of power cable of 110KV, 127/220KV, 500KV and above.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
In order to which the technical features, objects and effects to utility model are more clearly understood, Detailed description of the invention sheet is now compareed
The specific embodiment of utility model, identical label indicates identical component in the various figures.To make simplified form, in each figure
Part relevant to the utility model is only schematically shown, they do not represent its practical structures as product.
Referring to Fig. 1, the utility model is a kind of ceramic low smoke and zero halogen electric power that voltage rating is 8.7/15KV with connecing
Ground coaxial cable, the described coaxial cable include inner conductor 1, and the outside of inner conductor 1 is successively arranged insulating layer 2, the first ceramic
Silicon rubber flame retardant coating 3, outer conductor 4, the second Ceramic silicon rubber flame retardant coating 5, anti-lightning strike bed course 6 and oversheath 7.The insulation
The material of layer 2 is crosslinked polyethylene, and thickness is not less than 4.5mm.The material of the oversheath 7 is ceramic polyolefin jacket
Material.The material of the inner conductor 1 is copper free wire, and the cross-sectional area of inner conductor 1 is 50mm2~300mm2.The outer conductor 4 is
The double-deck copper free wire winding is worked out, and the cross-sectional area of outer conductor 4 is identical as the cross-sectional area of inner conductor 1.It is described anti-lightning strike
The material of bed course 6 is the anti-lightning strike bed course of polyurethane.The first Ceramic silicon rubber flame retardant coating 3 and the second Ceramic silicon rubber are resistance to
Fire bed 5 is Ceramic silicon rubber flame retardant coating, Ceramic silicon rubber flame retardant coating be two Ceramic silicon rubber fire resistant belts windings and
At.It should be noted that two Ceramic silicon rubber fire resistant belts are wound respectively, Ceramic silicon rubber fire resistant belt winding in inside is
Internal layer, Ceramic silicon rubber fire resistant belt winding in outside is outer layer, and two are laminated together that collectively form Ceramic silicon rubber resistance to
Fire bed.
The utility model can make the big section power cable of 35kV and 66/110kV, 127/220kv, 500kv and to power on
The power cable of pressure grade is preferably grounded, and is eliminated when lightning wave or internal overvoltage are flowed along cable core, cable metal
The higher impulse overvoltage of sheath；Or when system short-circuit fault current flows through cable core, the earth-free end of sheath will appear
Very high line-frequency induction overvoltage.During use, one end of the utility model is welded on 66KV~220KV cable gold
Belong on sheath, the other end connects on cross interconnected protective grounding case binding post.Lightning wave or internal overvoltage are imported ground connection to protect
Protection unit is to be effectively protected the power cable of 66/110kV, 220kv, 500kv voltage class.Protection power cable is normally transported
Row increases cable service life；It is good with electrical insulation properties, dielectric strength is high, anti-galvanic corrosion, it is heat-resisting, cold-resistant, ageing-resistant,
The advantages that fire-retardant, explosion-proof, good chemical stability, hydrophobicity and leakproofness.The utility model uses crosslinked polyethylene
The insulating layer 2 of material and the oversheath 7 of ceramic polyolefin jacket material, can significantly improve general polyethylene and polyvinyl chloride are exhausted
The performance of edge cable, polyvinyl chloride cable long-term operating temperature only has 70 DEG C, and cross-linked polyethylene insulated cable is long-term
Allow operating temperature up to 90 DEG C, up to 250 DEG C when short-circuit.Polyvinyl chloride is thermoplastic material, and mechanical performance is largely
The upper crystalline solid depending on polymer；Under the action of electrically and thermally, for especially cable in overcurrent or short trouble, temperature may
Raising makes internal generation softening transform, causes insulation performance to reduce, other insulation damages；And crosslinked polyethylene is to utilize chemistry side
Method or physical method make cable insulation polyethylene molecule be changed into main body network molecular structure, i.e. thermoplastic by linearity molecular structure
The polyethylene of property is changed into heat cured crosslinked polyethylene, to greatly improve its heat resistance and mechanical performance, reduces it
Shrinkage, not re-melting after keeping its heated, and maintain excellent electric property, so it is in heat-resisting, mechanical performance side
Face has good superiority；And it is nontoxic, do not pollute, do not stimulate skin and eyes that there is environmental-protection function.Ceramic polyolefin jacket
Material has the characteristics that low smoke and zero halogen, heavy metal free, non-toxic and tasteless and meet RoHS standard requirements, because it is with excellent
It is electrically isolated performance and fabulous oxygen barrier heat insulation, infringement of the thermal-flame to line-internal can be effectively isolated, delay inside
The decomposition of material, avoids conductor from fusing in flame, guarantees route in case of fire unimpeded；For the data transmission in fire
More times are provided, data is effectively prevent to be lost, ensure the transmission of information and electric power and the safety of electrical equipment and route；
Electrical insulation properties can be effectively improved by setting insulating layer 2 and oversheath 7 in summary, with heat-resisting good, load energy
The features such as power is strong, non-fusible, resistant to chemical etching, high mechanical strength；The material of oversheath 7 is ceramic polyolefin jacket material, tool
There is low smoke and zero halogen, heavy metal free, non-toxic and tasteless and the characteristics of meet RoHS standard requirements, because it is with excellent electric isolution
Performance and fabulous oxygen barrier heat insulation, can be effectively isolated infringement of the thermal-flame to line-internal, delay internal material
It decomposes, conductor is avoided to fuse in flame, guarantee route in case of fire unimpeded；In addition, the first Ceramic silicon rubber is resistance to
Fire bed 3 and the second Ceramic silicon rubber flame retardant coating 5 are respectively that two-layer ceramic SiClx rubber fire resistant belt is entwined, under high currents
It generates under 650 DEG C of high temperature or more of temperature or flame condition, complete ceramic-like shell can be quickly generated, bending strength is reachable
10MPa, dielectric strength are greater than 20kV/mm, and volume resistivity is higher than 5 × 1013 Ω cm；In the ceramic-like shell that high temperature generates
It does not crack, drip, in addition to also there is fabulous oxygen barrier heat insulation, can be effectively isolated with excellent electric isolution performance
Infringement of the thermal-flame to line-internal, delays the decomposition of internal material, conductor is avoided to fuse in flame, guarantees route in fire
It is unimpeded in the case of calamity.Outer conductor 4 is worked out using the double-deck copper free wire winding, and brass wire diameter can be made to reduce to increase
Pliability, to achieve the purpose that facilitate construction.In addition, the thickness of insulating layer 2 described in the utility model is not less than
4.5mm, 2 excircle of insulating layer wind double-layer ceramic SiClx rubber fire resistant belt, and oversheath is ceramic polyolefin jacket material；It is above-mentioned
Structure can make dielectric strength >=25kV/mm under room temperature, volume resistivity >=1.0 × 1014 Ω cm, have good hardness,
Wear-resisting, tear resistance, it is heat-resisting it is good, load capacity is strong, non-fusible, resistant to chemical etching, the excellent characteristics such as mechanical strength height.
In the description of the present invention, it should be understood that term " inside ", " top ", " front end " etc. instruction
Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model and simplification
Description, rather than the device or element of indication or suggestion meaning must have a particular orientation, constructed and grasped with specific orientation
Make, therefore should not be understood as limiting the present invention.It is in the description of the present invention, it should be noted that unless another
There is specific regulation and limit, term " being equipped with ", " installation ", " connected " etc. shall be understood in a broad sense, for example, it may be fixed connect
It connects, is integrally connected, may be a detachable connection；The connection being also possible to inside two elements；It can be directly connected,
Can indirectly connected through an intermediary, for the ordinary skill in the art, can understand as the case may be on
State the concrete meaning of term in the present invention.In addition, it should be understood that although this specification is retouched according to embodiment
State, every embodiment includes only a single technical solution, this narrating mode of specification be only be clear
Chu Qijian, the skilled in the art should refer to the specification as a whole, and the technical solutions in the embodiments can also be through suitable
Work as combination, forms other embodiments that can be understood by those skilled in the art.
Claims (7)
1. the ceramic low smoke and zero halogen electric power that a kind of voltage rating is 8.7/15KV is grounded coaxial cable, it is characterised in that: institute
Stating the coaxial cable includes inner conductor (1), and it is resistance to that the outside of inner conductor (1) is successively arranged insulating layer (2), the first Ceramic silicon rubber
Fire bed (3), outer conductor (4), the second Ceramic silicon rubber flame retardant coating (5), anti-lightning strike bed course (6) and oversheath (7).
2. the ceramic low smoke and zero halogen electric power ground connection that a kind of voltage rating according to claim 1 is 8.7/15KV is coaxial
Cable, it is characterised in that: the material of the insulating layer (2) is crosslinked polyethylene, and thickness is not less than 4.5mm.
3. the ceramic low smoke and zero halogen electric power ground connection that a kind of voltage rating according to claim 1 is 8.7/15KV is coaxial
Cable, it is characterised in that: the material of the oversheath (7) is ceramic polyolefin jacket material.
4. the ceramic low smoke and zero halogen electric power ground connection that a kind of voltage rating according to claim 1 is 8.7/15KV is coaxial
Cable, it is characterised in that: the material of the inner conductor (1) is copper free wire, and the cross-sectional area of inner conductor (1) is 50mm2~
300mm2。
5. the ceramic low smoke and zero halogen electric power ground connection that a kind of voltage rating according to claim 1 is 8.7/15KV is coaxial
Cable, it is characterised in that: the outer conductor (4) is that the double-deck copper free wire winding is worked out, the cross-sectional area of outer conductor (4) with
The cross-sectional area of inner conductor (1) is identical.
6. the ceramic low smoke and zero halogen electric power ground connection that a kind of voltage rating according to claim 1 is 8.7/15KV is coaxial
Cable, it is characterised in that: the anti-lightning strike bed course (6) is the anti-lightning strike bed course of polyurethane.
7. the ceramic low smoke and zero halogen electric power ground connection that a kind of voltage rating according to claim 1 is 8.7/15KV is coaxial
Cable, it is characterised in that: the first Ceramic silicon rubber flame retardant coating (3) and the second Ceramic silicon rubber flame retardant coating (5) are
Ceramic silicon rubber flame retardant coating, Ceramic silicon rubber flame retardant coating are that two Ceramic silicon rubber fire resistant belts are entwined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820758775.9U CN208256354U (en) | 2018-05-11 | 2018-05-11 | A kind of ceramic low smoke and zero halogen electric power ground connection coaxial cable that voltage rating is 8.7/15KV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820758775.9U CN208256354U (en) | 2018-05-11 | 2018-05-11 | A kind of ceramic low smoke and zero halogen electric power ground connection coaxial cable that voltage rating is 8.7/15KV |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208256354U true CN208256354U (en) | 2018-12-18 |
Family
ID=66480960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820758775.9U Active CN208256354U (en) | 2018-05-11 | 2018-05-11 | A kind of ceramic low smoke and zero halogen electric power ground connection coaxial cable that voltage rating is 8.7/15KV |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208256354U (en) |
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2018
- 2018-05-11 CN CN201820758775.9U patent/CN208256354U/en active Active
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