CN209149857U - 500kV super-pressure blocks water the termite-proof crosslinked cable of protection against rodents - Google Patents
500kV super-pressure blocks water the termite-proof crosslinked cable of protection against rodents Download PDFInfo
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- CN209149857U CN209149857U CN201822124346.9U CN201822124346U CN209149857U CN 209149857 U CN209149857 U CN 209149857U CN 201822124346 U CN201822124346 U CN 201822124346U CN 209149857 U CN209149857 U CN 209149857U
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- against rodents
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Abstract
It blocks water the termite-proof crosslinked cable of protection against rodents the utility model discloses 500kV super-pressure, including milliken conductor, conductor shield, insulating layer, insulation screen, metal sheath layer and the termite-proof restrictive coating of protection against rodents, it is characterized by: the outside of the milliken conductor is successively arranged the special more imperial bands of semiconductive and semiconductive nylon bag band composite layer from inside to outside, conductor shield, insulating layer and insulation screen, it is successively arranged semiconductor waterstop from inside to outside and the expansion buffer band composite layer that blocks water in the outside of insulated wire cores, metal sheath layer, asphalt corrosion resistant layer, PVC sheath layer, the termite-proof restrictive coating of protection against rodents and graphite linings.The utility model is mainly used for mouse, ant is compared in the substation of dense region and the 500kV EHV transmission of urban distribution network, can prevent termite damage cable, ensure that the safe and reliable operation of cable.
Description
Technical field
The utility model relates to a kind of improvement of 500kV extra-high-tension cable, belong to ehv power transmission field, specifically
It is that a kind of 500kV super-pressure blocks water the termite-proof crosslinked cable of protection against rodents.
Background technique
Current 500kV extra-high-tension cable is mainly used for power plant networking lead-out wire and the access of Ultra-high Voltage Substations power grid
Line carries grid power transmission important task, once it breaks down, it will it causes electric grid large area to paralyse, production, life is caused serious
Damage, caused by economic loss can be very huge.It is hot that termite is mainly distributed on the torrid zone, Asia between 45 DEG C of north latitude to 45 DEG C of south latitude
Band area.In China, discovery has the provinces and cities of termite destruction cable mainly to have: Guangdong, Shanghai, Fujian, Taiwan, Jiangxi, Zhejiang, peace
The provinces such as emblem, Sichuan, Hunan, Hubei, Yunnan, Hainan and Guangxi Zhuang Autonomous Region etc..China In Guangdong Province is due to termite according to statistics
The 60~70% of cable fault sum are accounted for about to failure caused by cable harm.In order to guarantee the safe and reliable fortune of cable run
Row, in all areas for having termite activity, cable should all take termite-proof measure.
Summary of the invention
The purpose of this utility model is to provide a kind of substation and urban distribution networks for comparing dense region suitable for mouse, ant
500kV EHV transmission in, biggish pulling force and pressure can be born, the maximum operating temperature that cable long-term work allows is 90
DEG C, the maximum operating temperature for overload of meeting an urgent need is 130 DEG C, and the maximum temperature of (time≤5 second) is 250 DEG C when short-circuit, and structure is simple,
It can prevent termite damage cable, guarantee that the 500kV super-pressure of the safe and reliable operation of cable blocks water the termite-proof crosslinked cable of protection against rodents.
In order to reach the goals above, the technical scheme adopted by the utility model is the 500kV super-pressure blocks water, protection against rodents is anti-
Termite crosslinked cable, including milliken conductor, conductor shield, insulating layer, insulation screen, metal sheath layer and protection against rodents are termite-proof
Restrictive coating, it is characterised in that: the outside of the milliken conductor is successively arranged the special more imperial bands of semiconductive from inside to outside and partly leads
Electric nylon bag band composite layer, conductor shield, insulating layer and insulation screen, the conductor shield, insulating layer and insulation
The three-layer co-extruded setting of shielded layer constitutes insulated wire cores on the outside of the special more imperial bands of semiconductive and semiconductive nylon bag band composite layer；
It is successively arranged semiconductor waterstop from inside to outside and block water expansion buffer band composite layer, protective metal shell in the outside of insulated wire cores
The termite-proof restrictive coating of layer, asphalt corrosion resistant layer, PVC sheath layer, protection against rodents and graphite linings.
The milliken conductor is five milliken conductors or seven milliken conductors, the sectional area of milliken conductor is 800~
3000mm2, be pressed by five or seven fan-segmentation stock blocks be twisted into it is round constitute, between adjacent fan-segmentation stock block
Equipped with insulating paper.
The special more imperial bands of the semiconductive and semiconductive nylon bag band composite layer are by the special more tengential belts of one layer of semiconductive and two
Layer semiconductive nylon tape is constituted, the first special more tengential belts of wrapped one layer of semiconductive in the outside of the milliken conductor, further around double-baging half
Electroconductive nylon band.
The conductor shield is not peelable type peroxide crosslinking semiconductive shielding layer.
The insulating layer is peroxide crosslinked polyethylene insulating layer.
The insulation screen is peelable type peroxide crosslinking insulation screen.
The semiconductor waterstop and the expansion buffer band composite layer 6 that blocks water is blocked water by two layers of semiconductor waterstop and two layers
Expansion buffer band is constituted, the outside of the insulation screen 5 first around semiconductor waterstop of double-baging, further around double-bag block water it is swollen
Swollen buffer strip.
The metal sheath layer be extruded in semiconductor waterstop and block water expansion buffer with 3.3 on composite layer~
The lead sheath layer of 3.8mm thickness, or semiconductor waterstop and the expansion buffer that blocks water are welded on 2.9~3.3mm thickness on composite layer
Aluminium sheath layer, rolling is equipped with spiral lamination on the metal sheath layer.
The asphalt corrosion resistant layer is coated on the outside of metal sheath layer.
Described two layers one time co-extrusion of the termite-proof restrictive coating of PVC sheath layer and protection against rodents is coated on the outside of asphalt corrosion resistant layer.
The graphite linings are coated in the termite-proof restrictive coating outside of protection against rodents.
The utility model has the beneficial effects that: being mainly used for mouse, ant compares substation and the urban distribution network of dense region
500kV EHV transmission in, can be used in direct buried, tunnel or in pipeline, biggish pulling force and pressure, cable can be born
The maximum operating temperature that long-term work allows is 90 DEG C, and the maximum operating temperature for overload of meeting an urgent need is 130 DEG C, (time≤5 when short-circuit
Second) maximum temperature be 250 DEG C, structure is simple, can prevent termite damage cable, ensure that the safe and reliable operation of cable.
Detailed description of the invention
Fig. 1 is the structure section schematic cross-sectional view of the utility model.
In figure: 1, milliken conductor；2, the special more imperial bands of semiconductive and semiconductive nylon bag band composite layer；3, conductor shielding
Layer；4, insulating layer；5, insulation screen；6, semiconductor waterstop and the expansion buffer band composite layer that blocks water；7, metal sheath layer；8,
Asphalt corrosion resistant layer；9, PVC sheath layer；10, the termite-proof restrictive coating of protection against rodents；11, graphite linings.
Specific embodiment
The utility model is made referring to Fig.1.The 500kV super-pressure blocks water the termite-proof crosslinked cable of protection against rodents, including segmentation is led
Body 1, conductor shield 3, insulating layer 4, insulation screen 5, metal sheath layer 7 and the termite-proof restrictive coating 10 of protection against rodents, feature exists
In: the outside of the milliken conductor 1 is successively arranged the special more imperial bands of semiconductive from inside to outside and semiconductive nylon bag band is compound
Layer 2, conductor shield 3, insulating layer 4 and insulation screen 5, the conductor shield 3, insulating layer 4 and insulation screen 5 three
The setting of layer co-extrusion constitutes insulated wire cores in 2 outside of the special more imperial bands of semiconductive and semiconductive nylon bag band composite layer；In insulated wire
The outside of core is successively arranged semiconductor waterstop and block water expansion buffer band composite layer 6, metal sheath layer 7, pitch from inside to outside
The termite-proof restrictive coating 10 of erosion resistant coating 8, PVC sheath layer 9, protection against rodents and graphite linings 11.
The milliken conductor 1 is five milliken conductors or seven milliken conductors, the sectional area of milliken conductor 1 is 800~
3000mm2, be pressed by five or seven fan-segmentation stock blocks be twisted into it is round constitute, between adjacent fan-segmentation stock block
Equipped with insulating paper.Under normal conditions, the current-carrying capacity of conductor and the sectional area of conductor are directly proportional, and sectional area is bigger, and current-carrying capacity is bigger.
But in alternating current transmission, due to kelvin effect, conductor cross sectional area greatly to a certain extent when, such as 800mm2When, then increase
The current-carrying capacity that conductor cross sectional area can not obtain corresponding proportion is promoted, and therefore, milliken conductor 1 uses 5 or 7 fan-segmentation stocks
Block is twisted, and is separated between each fan-segmentation stock block by insulating paper, to expand the surface area of conductor, is improved conductor
Current-carrying capacity.
The special more imperial bands of the semiconductive and semiconductive nylon bag band composite layer 2 are by the special more tengential belts of one layer of semiconductive and two
Layer semiconductive nylon tape is constituted, the first special more tengential belts of wrapped one layer of semiconductive in the outside of the milliken conductor 1, further around double-baging half
Electroconductive nylon band.
The conductor shield 3 is not peelable type peroxide crosslinking semiconductive shielding layer, is that use is not peelable
Made of type peroxide crosslinking semiconductive shieldin material.
The insulating layer 4 is peroxide crosslinked polyethylene insulating layer, is made of using peroxide crosslinked polyethylene
's.
The insulation screen 5 is peelable type peroxide crosslinking insulation screen, is using peelable type peroxide
Made of compound cross linked insulation shielding material.
The semiconductor waterstop and the expansion buffer band composite layer 6 that blocks water is blocked water by two layers of semiconductor waterstop and two layers
Expansion buffer band is constituted, the outside of the insulation screen 5 first around semiconductor waterstop of double-baging, further around double-bag block water it is swollen
Swollen buffer strip, to play the role of cable longitudinal water-blocking.
The metal sheath layer 7 be extruded in semiconductor waterstop and block water expansion buffer with 3.3 on composite layer 6~
The lead sheath layer of 3.8mm thickness, or semiconductor waterstop and the expansion buffer that blocks water are welded on 2.9~3.3mm thickness on composite layer 6
Aluminium sheath layer, rolling is equipped with spiral lamination on the metal sheath layer 7, so as to cable bend, and plays cable radial water-resisting
Effect.
The asphalt corrosion resistant layer 8 is coated in 7 outside of metal sheath layer.
The PVC sheath layer 9 and the termite-proof 10 two layers one time co-extrusion of restrictive coating of protection against rodents are coated on outside asphalt corrosion resistant layer 8
Side.
The termite-proof restrictive coating 10 of the protection against rodents is repulsed the enemy made of the mixing of worm medicine being added in polyolefine material, this is existing
There is technology.
The graphite linings 11 are coated in termite-proof 10 outside of restrictive coating of protection against rodents.
Above-mentioned 500kV super-pressure blocks water the production method of the termite-proof crosslinked cable of protection against rodents, it is characterised in that:
(1), make milliken conductor 1: milliken conductor 1 uses five milliken conductors or seven milliken conductors, respectively by five or seven
A fan-segmentation stock block is constituted；When stock block production fan-segmentation stock block, on 91 disk frame winches, point four sections of progress fan-segmentation stocks
Block presses, and every section presses and presses wheel by left and right, upper and lower four groups and form, and the wheel fan angle of pressing when five milliken conductors is 72 °, and seven
The wheel fan angle of pressing of milliken conductor is 51 °；The fan-segmentation stock block made is twisted on having phase-adjusted disk winch
Synthesis is round, and the fan angle of fan-segmentation stock block just becomes 360 ° of circle, adjacent fan-segmentation stock both facing to the center of circle, after being twisted
Separated between block with insulating paper, fan-segmentation stock block presses be twisted into round conductor after, become cable core.
(2), the special more imperial bands of production semiconductive and semiconductive nylon bag band composite layer 2: first wrapped one layer outside cable core
The special more tengential belts of semiconductive, further around semiconductive nylon tape of double-baging, so that the special more imperial bands of semiconductive and semiconductive nylon bag be made
Band composite layer 2；Semiconductive nylon tape is made of the semiconductive compound of nylon base fiber double-sided coating uniform electrical characteristics, and is had
Good intensity and semiconduction energy, volume resistivity≤1 × 105Ω·cm。
(3), insulated wire cores are made in three-layer co-extruded conductor shield 3, insulating layer 4 and insulation screen 5: in import, Germany is special
5 three layers of enterprising column conductor shielded layer 3 of Le Site VCV production line, insulating layer 4 and insulation screen co-extrusion are coated on semiconductive
2 outside of special more imperial bands and semiconductive nylon bag band composite layer；Conductor shield 3 should be uniformly coated on 1 outside of milliken conductor
The much more special imperial bands of semiconductive and semiconductive nylon bag band composite layer 2 on, 3 surface of conductor shield answer it is smooth, without obvious twisted wire
Burr, material grain, is burnt or abrasive trace wedge angle；Any one place's thinnest point of insulating layer 4 should be not less than the 90% of nominal value, core shift
Degree≤8%；Insulation screen 5 should uniformly, and surface is answered smooth；Using German 8000 derivometer of SIKORA company X-RAY, to conductor
The thickness of 5 trilaminate material of shielded layer 3, insulating layer 4 and insulation screen, the degree of eccentricity carry out real-time measurement adjustment, to ensure that
Core shift degree≤8%.
(4), degassing: after the completion of insulated wire cores production, into deaeration chamber, parking 15 days in 70 DEG C of constant temperature deaeration chamber,
The gas for allowing insulating layer 4 to generate in cross-linking chemistry reaction process thoroughly releases.
(5), water blocking layer is made, i.e., wrapped semiconductor waterstop and blocks water expansion buffer with composite layer 6: in insulated wire cores
Outside is first around semiconductor waterstop of double-baging, further around the expansion buffer band that blocks water of double-baging, to play the work of cable longitudinal water-blocking
With twining package tape answers uniform, semiconductive cloth one side that should closely be coated in insulated wire cores, and adjacent two layers must be put up, and same layer is not
There must be overlapping that outer diameter is caused to increase.
(6), metal sheath layer 7 is made, cable radial water-resisting is played the role of:
When using aluminium sheath layer: aluminium sheath layer is welded on the outside of semiconductor waterstop and the expansion buffer band composite layer 6 that blocks water,
Aluminium sheath layer with a thickness of 2.9~3.3mm, and roll spiral lamination, so that cable can be bent, aluminium sheath layer is not low using purity
Aluminum or aluminum alloy in 99.50% is made；
When using lead sheath layer: melting continuous lead sheathing extruder in semiconductor waterstop and the expansion buffer band composite layer that blocks water using heat
6 outsides extrude lead sheath layer, and fusing furnace temperature is set as 380 DEG C, and heat preservation furnace temperature is set as 380 DEG C, defeated lead pipe temperature setting
It is 380 DEG C, area's temperature is set as 345 DEG C under fuselage, and area's temperature is set as 320 DEG C on fuselage, and area's temperature is set as 290 under die holder
DEG C, area's temperature is set as 295 DEG C on die holder, opens defeated lead valve after ten minutes when each regional temperature reaches set-point temperature, makes lead
Liquid stream enters fuselage, before extrusion output is not stable, does not open die orifice cooling water, and when unlatching need to be by lower water temperature to 40~60 DEG C, must
Want the cooling lead pipe of the spray head of Shi Keyong cooling trough, lead sheath layer with a thickness of 3.3~3.8mm, in the lead sheath layer extruded
Upper carry out embossing, so that cable can be bent.
(7), it makes asphalt corrosion resistant layer 8: using Electric heating, by asphalt melting, through three screw pump, pitch by molten
Change case and enter high-voltage tube, then control the pressure in high-voltage tube by quck-opening valve, full and uniform coating can be reached.
(8), PVC sheath layer 9 and the termite-proof restrictive coating 10 of protection against rodents are made: on 200+120 extruding machine, a co-extrusion PVC
Restrictive coating 9 and the termite-proof restrictive coating 10 of protection against rodents are coated on 8 outside of asphalt corrosion resistant layer, since PVC sheath layer 9 is made of PVC, material
Matter is harder, plays the role of protection against rodents.
(9), graphite linings 11 are made: graphite is uniformly coated in by graphite coater by protection against rodents using semiconductive graphite
Termite-proof 10 outside of restrictive coating, as the electrode of test shield layer proof voltage energy, graphite linings should be continuous, bright, uniform, resistance to
It wipes.
The utility model is mainly used for mouse, ant compare dense region substation and urban distribution network 500kV super-pressure it is defeated
In electricity, biggish pulling force and pressure can be born, the maximum operating temperature that cable long-term work allows is 90 DEG C, meets an urgent need overload most
Elevated operating temperature is 130 DEG C, and the maximum temperature of (time≤5 second) is 250 DEG C when short-circuit, can prevent termite damage cable, is guaranteed
The safe and reliable operation of cable.
Claims (8)
1.500kV super-pressure blocks water the termite-proof crosslinked cable of protection against rodents, including milliken conductor (1), conductor shield (3), insulating layer
(4), insulation screen (5), metal sheath layer (7) and the termite-proof restrictive coating of protection against rodents (10), it is characterised in that: the segmentation is led
The outside of body (1) is successively arranged the special more imperial bands of semiconductive and semiconductive nylon bag band composite layer (2), conductor shielding from inside to outside
Layer (3), insulating layer (4) and insulation screen (5), the conductor shield (3), insulating layer (4) and insulation screen (5) three
The setting of layer co-extrusion constitutes insulated wire cores on the outside of the special more imperial bands of semiconductive and semiconductive nylon bag band composite layer (2)；It is insulating
The outside of core is successively arranged semiconductor waterstop and block water expansion buffer band composite layer (6), metal sheath layer from inside to outside
(7), asphalt corrosion resistant layer (8), PVC sheath layer (9), the termite-proof restrictive coating of protection against rodents (10) and graphite linings (11).
The termite-proof crosslinked cable of protection against rodents 2. 500kV super-pressure according to claim 1 blocks water, it is characterised in that: described
Milliken conductor (1) is five milliken conductors or seven milliken conductors, and the sectional area of milliken conductor (1) is 800~3000mm2, it is by five
A or seven fan-segmentation stock blocks, which press, is twisted into round composition, and insulating paper is equipped between adjacent fan-segmentation stock block.
The termite-proof crosslinked cable of protection against rodents 3. 500kV super-pressure according to claim 1 blocks water, it is characterised in that: described
The special more imperial bands of semiconductive and semiconductive nylon bag band composite layer (2) are by the special more tengential belts of one layer of semiconductive and two layers of semiconductive nylon
Band is constituted, the first special more tengential belts of wrapped one layer of semiconductive in the outside of the milliken conductor (1), further around semiconductive nylon of double-baging
Band.
The termite-proof crosslinked cable of protection against rodents 4. 500kV super-pressure according to claim 1 blocks water, it is characterised in that: described
Semiconductor waterstop and block water expansion buffer band composite layer (6) by two layers of semiconductor waterstop and two layers block water expansion buffer band structure
At the outside of the insulation screen (5) is first around semiconductor waterstop of double-baging, further around the expansion buffer band that blocks water of double-baging.
The termite-proof crosslinked cable of protection against rodents 5. 500kV super-pressure according to claim 1 blocks water, it is characterised in that: described
Metal sheath layer (7) is to be extruded in semiconductor waterstop and the expansion buffer that blocks water with 3.3~3.8mm thickness on composite layer (6)
Lead sheath layer, or it is welded on semiconductor waterstop and aluminium shield of the expansion buffer that blocks water with 2.9~3.3mm thickness on composite layer (6)
Jacket layer, rolling is equipped with spiral lamination on the metal sheath layer (7).
The termite-proof crosslinked cable of protection against rodents 6. 500kV super-pressure according to claim 1 blocks water, it is characterised in that: described
Asphalt corrosion resistant layer (8) is coated on the outside of metal sheath layer (7).
The termite-proof crosslinked cable of protection against rodents 7. 500kV super-pressure according to claim 1 blocks water, it is characterised in that: described
PVC sheath layer (9) and termite-proof (10) the two layers one time co-extrusion of restrictive coating of protection against rodents are coated on the outside of asphalt corrosion resistant layer (8).
The termite-proof crosslinked cable of protection against rodents 8. 500kV super-pressure according to claim 1 blocks water, it is characterised in that: described
Graphite linings (11) are coated on the outside of the termite-proof restrictive coating of protection against rodents (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822124346.9U CN209149857U (en) | 2018-12-18 | 2018-12-18 | 500kV super-pressure blocks water the termite-proof crosslinked cable of protection against rodents |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822124346.9U CN209149857U (en) | 2018-12-18 | 2018-12-18 | 500kV super-pressure blocks water the termite-proof crosslinked cable of protection against rodents |
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| Publication Number | Publication Date |
|---|---|
| CN209149857U true CN209149857U (en) | 2019-07-23 |
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ID=67290281
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| CN201822124346.9U Active CN209149857U (en) | 2018-12-18 | 2018-12-18 | 500kV super-pressure blocks water the termite-proof crosslinked cable of protection against rodents |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114613532A (en) * | 2022-04-25 | 2022-06-10 | 远东电缆有限公司 | Oil-resistant cold-resistant flexible cable and preparation method and application thereof |
-
2018
- 2018-12-18 CN CN201822124346.9U patent/CN209149857U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114613532A (en) * | 2022-04-25 | 2022-06-10 | 远东电缆有限公司 | Oil-resistant cold-resistant flexible cable and preparation method and application thereof |
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