CN207052345U - A kind of expanding type is taken shelter from the thunder downlead - Google Patents

A kind of expanding type is taken shelter from the thunder downlead Download PDF

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Publication number
CN207052345U
CN207052345U CN201721039124.6U CN201721039124U CN207052345U CN 207052345 U CN207052345 U CN 207052345U CN 201721039124 U CN201721039124 U CN 201721039124U CN 207052345 U CN207052345 U CN 207052345U
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China
Prior art keywords
downlead
layer
thunder
expanding type
insulation
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CN201721039124.6U
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Chinese (zh)
Inventor
刘淑芳
许仁杰
陈守娥
李井阳
吴玉飞
李启
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TEBIAN ELECTRIC SHANDONG LUNENG TAISHAN CABLE CO Ltd
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TEBIAN ELECTRIC SHANDONG LUNENG TAISHAN CABLE CO Ltd
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Priority to CN201721039124.6U priority Critical patent/CN207052345U/en
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Abstract

The utility model is a kind of lightning-arrest downlead of expanding type, for the connection lightning rod of lightning-protection system and the expanding type concentric conductor high-tension cable of earth terminal, hollow expansion tube is followed successively by from inside to outside, concentric conductor, conductor shield, high pressure resistant insulation layer, insulation screen, metal screen layer, lapping layer and outer jacket, hollow expansion tube is the hollow circular-tube that polythene material extrudes, inwall sets some strengthening rib strips, the cross sectional shape of strengthening rib strip is circular or triangle, it is evenly distributed, its smooth in appearance, inside is in flower pattern, support force is strong, compared with solid support pipe, it is low with production cost, it is in light weight, cost of transportation is low, good heat dissipation, the advantages that laying installation facilitates, it is easy for construction etc..It is more suitable for the narrow and small or inconvenient place using common metal downlead, a termination lightning rod, other end is earth terminal, and anti-corona discharge during thunderbolt, current-carrying capacity is big, and aerial drainage speed is fast, and insulating properties are good, and the effect of safe insulation protection can be provided to critical facility.

Description

A kind of expanding type is taken shelter from the thunder downlead
Technical field
A kind of construction of cable is the utility model is related to, more particularly to a kind of expanding type is taken shelter from the thunder downlead, for lightning-protection system Connection lightning rod and earth terminal expanding type concentric conductor high-tension cable.
Background technology
Require that outside lightning protection protective system is by arrester, downlead, grounding terminals device group according to IEC62305 standards Into traditional lightning arrester does not take into full account the electric insulation distance between downlead and remaining metallic conductor, exists serious Potential safety hazard, substituted later by universal high-voltage isulation single-core cable, and conventional high-pressure insulation single-core cable, conductor diameter Small, anti-corona discharge ability, insulation can not suppress water tree production, be subjected to heavy current impact for a long time and easily form electric tree, so as to Cause downlead breakdown.Using the lightning-arrest downlead of expanding type, aerial drainage speed is fast, and anti-corona ability is strong, and insulating properties are good, suppresses Water tree produces, and effectively improves product service life.Magnetic interference is reduced, flexible for installation, use occasion is unrestricted, easy for construction Deng.
Utility model content
In order to solve the above-mentioned technical problem, the utility model is a kind of lightning-arrest downlead of expanding type, and technical scheme is:It is a kind of Expanding type is taken shelter from the thunder downlead, is followed successively by hollow expansion tube from inside to outside(1), concentric conductor(2), conductor shield(3), it is high pressure resistant Insulating barrier(4), insulation screen(5), metal screen layer(6), lapping layer(7)And outer jacket(8), hollow expansion tube(1)Outside by Some circular annealing copper wires dredge that copper strips is overlapping wrapped to be used as concentric conductor around adding(2), concentric conductor(2)Extrude conductor shielding outside Layer(3), conductor shield(3)Extrude high pressure resistant insulation layer outside(4), high pressure resistant insulation layer(4)Extrude insulation screen outside(5), Insulation screen(5)It is outer to dredge around some circular annealed copper silks as metal screen layer(6), metal screen layer(6)It is outer wrapped High fire-retardance band is as lapping layer(7), lapping layer(7)Fire-retardant uvioresistant semiconductive outer jacket is extruded outside(8), it is described hollow expanding Pipe(1)The hollow circular-tube extruded for polythene material, its inwall set some strengthening rib strips, the section shape of its strengthening rib strip Shape is circular or triangle, is evenly distributed.
Further, the concentric conductor(2)In hollow expansion tube(1)Outer dredge adds around some high purity oxygen free copper single lines Copper strips is overlapping close wrapped to be formed.
Further, the conductor shield(3)It is to extrude crosslinking by cross-linking type semiconductive inner shield material to form.
Further, the high pressure resistant insulation layer(4)Crosslinking is extruded using water resistant tree cross-linked type polyethylene Insulation Material to form.
Further, the insulation screen(5)Crosslinking is extruded using peelable type semiconductive external shield material to form.
Further, the metal screen layer(6)Using more circular annealed copper silks it is equidistant uniformly dredge around into.
Further, it is characterised in that the lapping layer(7)Wrapped formed using high fire-retardance band is overlapping.
Further, the outer jacket(8)Extruded and formed using semiconductive pvc sheathing compound.
The beneficial effects of the utility model are:Using the lightning-arrest downlead of expanding type, hollow expansion tube squeezes for polythene material The hollow circular-tube formed is made, its inwall sets some strengthening rib strips, and the cross sectional shape of its strengthening rib strip is circular or triangle, It is evenly distributed, its smooth in appearance, inside is in flower pattern, and support force is strong, compared with solid support pipe, has production cost low, again The advantages that amount is light, cost of transportation is low, good heat dissipation, laying installation facilitate;Be advantageous to cable radiating, increase using the utility model Conductor diameter, improves anti-corona ability and current-carrying capacity, and aerial drainage speed is fast, anti-corona ability is strong, and insulating properties are good, suppresses water Tree production, effectively improves product service life;Magnetic interference is reduced again, and flexible for installation, use occasion is unrestricted, easy for construction Deng.The narrow and small or inconvenient place using common metal downlead is more suitable for, a termination lightning rod, other end is ground connection End, anti-corona discharge during thunderbolt, current-carrying capacity is big, and aerial drainage speed is fast, and insulating properties are good, and critical facility can be given to provide safe insulation and protected The effect of shield.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
As shown in figure 1, hollow expansion tube 1, concentric conductor 2, conductor shield 3, high pressure resistant insulation layer 4, insulation screen 5, metal screen layer 6, lapping layer 7, outer jacket 8.
Embodiment
As shown in figure 1, the utility model be a kind of expanding type take shelter from the thunder downlead, be followed successively by from inside to outside hollow expansion tube 1, Concentric conductor 2, conductor shield 3, high pressure resistant insulation layer 4, insulation screen 5, metal screen layer 6, lapping layer 7 and outer jacket 8, Hollow expansion tube 1 it is outer by some circular copper wires of annealing dredge around add copper strips it is overlapping it is wrapped be used as concentric conductor 2, dredge around lead with one heart Body 2 increases conductor diameter compared with compacted stranded conductor, reduces kelvin effect, increases and be effectively conducted sectional area, increases The current-carrying capacity of cable, improve the discharge capacity of downlead;Concentric conductor 2 is dredged high-purity around some outside hollow expansion tube 1 Degree oxygen-free copper single line adds copper strips is overlapping close wrapped to form;Extrude conductor shield 3 outside concentric conductor 2, conductor shield 3 be by Cross-linking type semiconductive inner shield material extrudes crosslinking and formed, and high pressure resistant insulation layer 4, high pressure resistant insulation layer are extruded outside conductor shield 3 4 use water resistant tree-shaped cross-linking polyethylene materials, suppress the insulated water tree generation during use, effectively improve product and use the longevity Life.Insulation screen 5 is extruded outside high pressure resistant insulation layer 4, is dredged outside insulation screen 5 around some circular annealed copper silks as gold Belong to screen layer 6, semiconductive shielding layer 3 and metal screen layer 6, reduce magnetic field induction of the discharge current to surrounding, to building Other equipment electromagnetic interference is not present, securely and reliably.Using more annealed copper silks as metal screen layer 6, preferably For the high current taken shelter from the thunder after conduction thunderbolt in downlead in induced-current caused by insulation shielding surface, brass wire shielding section is big, lets out Flow velocity degree is faster.Metal screen layer 6 is uniformly dredged around into lapping layer 7 is using high using more circular annealed copper silks are equidistant Inhibiting tape is overlapping wrapped to be formed.Fire-retardant uvioresistant semiconductive outer jacket 8 is extruded outside lapping layer 7, outer jacket uses fire-retardant anti-purple Outside line semiconductive material, it is possible to prevente effectively from outer jacket surface produces corona discharge, improve circuit secure safety;Fire-retardant anti-purple Uv damage caused by outside material makes cable have good fire resistance and effectively keeps out sunshine irradiation, is improved outer The service life of sheath.Hollow expansion tube 1 is that polythene material is extruded and formed, and be hollow circular-tube, smooth in appearance, the setting of its inwall Some strengthening rib strips, are evenly distributed, and the cross sectional shape of its strengthening rib strip is circular or triangle, and support force is strong, and solid Support tube is compared, and has the advantages that production cost is low, in light weight, cost of transportation is low, good heat dissipation, laying installation are convenient.
The beneficial effects of the utility model are:Using the lightning-arrest downlead of expanding type, hollow expansion tube squeezes for polythene material The hollow circular-tube formed is made, its inwall sets some strengthening rib strips, and the cross sectional shape of its strengthening rib strip is circular or triangle, It is evenly distributed, its smooth in appearance, inside is in flower pattern, and support force is strong, compared with solid support pipe, has production cost low, again The advantages that amount is light, cost of transportation is low, good heat dissipation, laying installation facilitate;The utility model is advantageous to cable radiating, increases and leads External footpath, anti-corona ability and current-carrying capacity are improved, aerial drainage speed is fast, and anti-corona ability is strong, and insulating properties are good, suppresses water tree life Production, effectively improves product service life;Magnetic interference is reduced again, and flexible for installation, use occasion is unrestricted, easy for construction etc.. It is more suitable for the narrow and small or inconvenient place using common metal downlead, a termination lightning rod, other end is earth terminal, thunder Anti- corona discharge when hitting, current-carrying capacity is big, and aerial drainage speed is fast, and insulating properties are good, and safe insulation protection can be provided to critical facility Effect.
It is to be also not limited to the example above, this skill to limitation of the present utility model, the utility model that described above, which is not, The variations, modifications, additions or substitutions that the technical staff in art field is made in essential scope of the present utility model, it should also belong to The scope of protection of the utility model.

Claims (8)

  1. The downlead 1. a kind of expanding type is taken shelter from the thunder, is followed successively by hollow expansion tube from inside to outside(1), concentric conductor(2), conductor shield (3), high pressure resistant insulation layer(4), insulation screen(5), metal screen layer(6), lapping layer(7)And outer jacket(8), it is hollow expanding Pipe(1)Dredge that copper strips is overlapping wrapped to be used as concentric conductor around adding by some circular copper wires of annealing outside(2), concentric conductor(2)It is outer to squeeze Conductor shield processed(3), conductor shield(3)Extrude high pressure resistant insulation layer outside(4), high pressure resistant insulation layer(4)Extrude insulation outside Screen layer(5), insulation screen(5)It is outer to dredge around some circular annealed copper silks as metal screen layer(6), metal screen layer (6)Outer wrapped high fire-retardance band is as lapping layer(7), lapping layer(7)Fire-retardant uvioresistant semiconductive outer jacket is extruded outside(8), its It is characterised by, the hollow expansion tube(1)The hollow circular-tube extruded for polythene material, its inwall set some reinforcements Bar, the cross sectional shape of its strengthening rib strip is circular or triangle, is evenly distributed.
  2. The downlead 2. a kind of expanding type as claimed in claim 1 is taken shelter from the thunder, it is characterised in that the concentric conductor(2)Hollow Expansion tube(1)Outer dredge adds copper strips is overlapping close wrapped to form around some high purity oxygen free copper single lines.
  3. The downlead 3. a kind of expanding type as claimed in claim 2 is taken shelter from the thunder, it is characterised in that the conductor shield(3)Be by Cross-linking type semiconductive inner shield material extrudes crosslinking and formed.
  4. The downlead 4. a kind of expanding type as claimed in claim 3 is taken shelter from the thunder, it is characterised in that the high pressure resistant insulation layer(4)Adopt Crosslinking is extruded with water resistant tree cross-linked type polyethylene Insulation Material to form.
  5. The downlead 5. a kind of expanding type as claimed in claim 4 is taken shelter from the thunder, it is characterised in that the insulation screen(5)Using Peelable type semiconductive external shield material extrudes crosslinking and formed.
  6. The downlead 6. a kind of expanding type as claimed in claim 5 is taken shelter from the thunder, it is characterised in that the metal screen layer(6)Using More circular annealed copper silks it is equidistant uniformly dredge around into.
  7. The downlead 7. a kind of expanding type as described in any one in claim 1-6 is taken shelter from the thunder, it is characterised in that the lapping layer (7)Wrapped formed using high fire-retardance band is overlapping.
  8. The downlead 8. a kind of expanding type as claimed in claim 7 is taken shelter from the thunder, it is characterised in that the outer jacket(8)Using partly leading Electric pvc sheathing compound, which extrudes, to be formed.
CN201721039124.6U 2017-08-18 2017-08-18 A kind of expanding type is taken shelter from the thunder downlead Active CN207052345U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721039124.6U CN207052345U (en) 2017-08-18 2017-08-18 A kind of expanding type is taken shelter from the thunder downlead

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721039124.6U CN207052345U (en) 2017-08-18 2017-08-18 A kind of expanding type is taken shelter from the thunder downlead

Publications (1)

Publication Number Publication Date
CN207052345U true CN207052345U (en) 2018-02-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108539585A (en) * 2018-07-03 2018-09-14 安徽三六五办公科技有限公司 A kind of lightening protection installation with illuminator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108539585A (en) * 2018-07-03 2018-09-14 安徽三六五办公科技有限公司 A kind of lightening protection installation with illuminator

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