CN101752685A - Track shielding-type anti-corrosion high voltage-resistant earth bus - Google Patents
Track shielding-type anti-corrosion high voltage-resistant earth bus Download PDFInfo
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- CN101752685A CN101752685A CN201010121094A CN201010121094A CN101752685A CN 101752685 A CN101752685 A CN 101752685A CN 201010121094 A CN201010121094 A CN 201010121094A CN 201010121094 A CN201010121094 A CN 201010121094A CN 101752685 A CN101752685 A CN 101752685A
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- high voltage
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- earth bus
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Abstract
The invention relates to an earth bus, in particular to a track shielding-type anti-corrosion high voltage-resistant earth bus. The invention comprises a conductor and a thermal shrinkage high voltage insulated tape, wherein the thermal shrinkage high voltage insulated tape is distributed along the conductor axially, a semi-conductive shielding layer is arranged between the conductor and the thermal shrinkage high voltage insulated tape, the semi-conductive shielding layer is coated on the peripheral surface of the conductor, a fixed shell is arranged on the peripheral surface of the thermal shrinkage high voltage insulated tape, an insulating layer is arranged between the fixed shell and the thermal shrinkage high voltage insulated tape, and two insulating end caps are fixedly arranged on both ends of the fixed shell. By arranging the semi-conductive shielding layer between the conductor and the thermal shrinkage high voltage insulated tape, the high voltage-resistant earth bus can effectively prevent electromagnetic interference due to fault earthing and lightning protection, thereby improving safety of track traffic signal transmission and communication.
Description
Technical field
The present invention relates to a kind of earth bus, especially a kind of track shielding-type anti-corrosion high voltage-resistant earth bus belongs to the technical field of Rail Transit System ground connection.
Background technology
At present, during track traffic electric power equipment fault earthing and lightning protection ground connection, moment can produce the ground connection pulse high current on the earth bus; Described ground connection pulse high current can produce serious electromagnetic interference under high voltage, influence transmission of track traffic signal and communication security.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of track shielding-type anti-corrosion high voltage-resistant earth bus is provided, it is simple in structure, can suppress electromagnetic interference, and is safe and reliable.
According to technical scheme provided by the invention, described track shielding-type anti-corrosion high voltage-resistant earth bus comprises conductor and along the high insulating tape of the pyrocondensation of conductor axial distribution; Between the high insulating tape of described conductor and pyrocondensation semiconductive shielding layer is set, described semiconductive shielding layer is coated on the conductor outer peripheral face; The outer peripheral face of the high insulating tape of described pyrocondensation is provided with set casing, is provided with insulating barrier between the high insulating tape of described set casing and pyrocondensation; The two ends of described set casing are equipped with fixedly connected insulated end cover.
The high insulating tape of described pyrocondensation is provided with the insulation retainer ring; High insulating tape of described pyrocondensation and semiconductive shielding layer utilization insulation retainer ring and conductor are fastenedly connected.The lower end of the high insulating tape outer peripheral face of described pyrocondensation is provided with stop block, and described stop block is positioned at the bottom of set casing.Described set casing is provided with drip ring, and described drip ring is fixedlyed connected with set casing.Described conductor is copper pipe or copper bar.Described set casing is made by stainless steel material.Described semiconductive shielding layer is made by the silane cross-linked polyolefin material.Described semiconductive shielding layer is a zero potential corresponding to the current potential that contacts between the surface with the high insulating tape of pyrocondensation.
Advantage of the present invention: by between high insulating tape of pyrocondensation and conductor semiconductive shielding layer being set, the electromagnetic interference that produces in the time of can effectively suppressing fault earthing and lightning protection has improved the safety of transmission of track traffic signal and communication.Set casing adopts stainless steel material to make, and drip ring is set on set casing, has improved the anti-corrosion capability of earth bus, has prolonged the useful life of earth bus.Insulation retainer ring and stop block are set on the high insulating tape of pyrocondensation, guarantee earth bus safe and reliable in using.Conductor is copper pipe or copper bar, and in the time of can effectively reducing fault earthing and lightning protection, the ground connection pulse current that produces in the conductor flows through the impedance and the eddy current of conductor, at utmost reduces the ground connection residual voltage.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
The invention will be further described below in conjunction with concrete drawings and Examples.
As shown in Figure 1: the present invention includes conductor 1, semiconductive shielding layer 2, the high insulating tape 3 of pyrocondensation, insulated end cover 4, insulating barrier 5, insulation retainer ring 6, drip ring 7, set casing 8 and stop block 9.
As shown in Figure 1: described semiconductive shielding layer 2 is along on the conductor 1 axial length coating conductor 1, and semiconductive shielding layer 2 is made by the silane cross-linked polyolefin material, can effectively suppress conductor 1 to extraradial electromagnetic interference; Described conductor 1 is copper pipe or copper bar.The high insulating tape 3 of described pyrocondensation is coated on the semiconductive shielding layer 2; The high insulating tape 3 of described pyrocondensation utilizes insulation retainer ring 6 to be fastenedly connected with conductor 1 with semiconductive shielding layer 2, avoids semiconductive shielding layer 2, the high insulating tape 3 of pyrocondensation to move relative to conductor 1.The outer peripheral face of the high insulating tape 3 of described pyrocondensation is provided with set casing 8, and described set casing 8 adopts stainless steel materials to make, and set casing 8 is installed in when underground, can reduce corrosion and damage.3 of the high insulating tapes of set casing 8 and pyrocondensation are provided with insulating barrier 5, and described insulating barrier 5 is formed by the insulating material of filling.The high insulating tape 3 of described pyrocondensation constitutes main insulating layer with insulating barrier 5; The surface potential that semiconductive shielding layer 2 contacts with described main insulating layer is a zero potential.
The two ends of described set casing 8 are equipped with insulated end cover 4, and insulated end cover 4 is fixedlyed connected with set casing 8.Described stop block 9 is positioned at set casing 8 bottoms, and stop block 9 is used to bear the pressure of insulating barrier 5 materials; Avoid in the use, the material downslide because of insulating barrier 5 influences the use of whole earth bus.Be surrounded with fixedly connected drip ring 7 on the set casing 8, described drip ring 7 can block water be penetrated into the bottom of earth bus, can prolong the useful life of earth bus.
As shown in Figure 1: during use, earth bus connects other electric equipments corresponding to an end that is provided with stop block 9.According to the size of earth bus electric current, choose the sectional dimension of conductor 1; Conductor 1 adopts copper pipe or copper bar to make, and the eddy current that produces when flowing through conductor 1 by choosing the sectional dimension of conductor 1, effectively reducing farthest reduces the ground connection residual voltage.Choose the corresponding semiconductive shielding layer 2 and the insulation filling material of insulating barrier 5 according to the surge voltage grade, make the earth bus electric current that can withstand shocks.Semiconductive shielding layer 2 is made by silane cross-linked polyolefin; the current potential that contacts the surface between semiconductive shielding layer 2 and main insulating layer is a zero potential; can greatly decay when flowing through the ground connection pulse current in the conductor 1, the electromagnetic interference of generation can be protected transmission of track traffic signal and communication security.The high insulating tape 3 of described pyrocondensation forms high voltage bearing main insulating layer with insulating barrier 5, makes earth bus can bear higher voltage.Set casing 8 adopts stainless steel material to make, and can flow through the electromagnetic interference that big electric current produces by shielded conductor 1, and have anticorrosion ability preferably, can prolong the useful life of earth bus.Drip ring 7 on the set casing 8 can stop that the moisture content of surrounding soil enters the electric equipment of earth bus below, guarantees to connect the safety of electric equipment.Stop block 9 can prevent that the insulating material of insulating barrier 5 from gliding, and can further prolong the useful life of earth bus.
The present invention is simple in structure, compact, reasonable; Adopt stainless set casing and semiconductive shielding layer to obtain shielding-type anti-corrosion high voltage-resistant earth bus, just can suppress greatly under ground connection pulse high current that inner wire flows through, the high voltage, outwards the electromagnetic interference and the ground connection residual voltage of emission.
Basic mechanical design feature of the present invention and service condition:
1, operating voltage 20KV.
2,1 minute withstand voltage 30KV of power frequency.
3, lightning impulse voltage withstand voltage peak value 75KV (8/20 μ s).
4, shielding attenuation 60db.
Claims (8)
1. track shielding-type anti-corrosion high voltage-resistant earth bus comprises conductor (1) and along the high insulating tape of pyrocondensation (3) of conductor (1) axial distribution; It is characterized in that: between described conductor (1) and the high insulating tape of pyrocondensation (3) semiconductive shielding layer (2) is set, described semiconductive shielding layer (2) is coated on conductor (1) outer peripheral face; The outer peripheral face of the high insulating tape of described pyrocondensation (3) is provided with set casing (8), is provided with insulating barrier (5) between described set casing (8) and the high insulating tape of pyrocondensation (3); The two ends of described set casing (8) are equipped with fixedly connected insulated end cover (4).
2. track shielding-type anti-corrosion high voltage-resistant earth bus according to claim 1 is characterized in that: the high insulating tape of described pyrocondensation (3) is provided with insulation retainer ring (6); The high insulating tape of described pyrocondensation (3) utilizes insulation retainer ring (6) and conductor (1) to be fastenedly connected with semiconductive shielding layer (2).
3. track shielding-type anti-corrosion high voltage-resistant earth bus according to claim 1 is characterized in that: the lower end of the high insulating tape of described pyrocondensation (3) outer peripheral face is provided with stop block (9), and described stop block (9) is positioned at the bottom of set casing (8).
4. track shielding-type anti-corrosion high voltage-resistant earth bus according to claim 1 is characterized in that: described set casing (8) is provided with drip ring (7), and described drip ring (7) is fixedlyed connected with set casing (8).
5. track shielding-type anti-corrosion high voltage-resistant earth bus according to claim 1 is characterized in that: described conductor (1) is copper pipe or copper bar.
6. track shielding-type anti-corrosion high voltage-resistant earth bus according to claim 1 is characterized in that: described set casing (8) is made by stainless steel material.
7. track shielding-type anti-corrosion high voltage-resistant earth bus according to claim 1 is characterized in that: described semiconductive shielding layer (2) is made by the silane cross-linked polyolefin material.
8. track shielding-type anti-corrosion high voltage-resistant earth bus according to claim 1 is characterized in that: described semiconductive shielding layer (2) is a zero potential corresponding to the current potential that contacts between the surface with the high insulating tape of pyrocondensation (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010121094A CN101752685A (en) | 2010-02-04 | 2010-02-04 | Track shielding-type anti-corrosion high voltage-resistant earth bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010121094A CN101752685A (en) | 2010-02-04 | 2010-02-04 | Track shielding-type anti-corrosion high voltage-resistant earth bus |
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| Publication Number | Publication Date |
|---|---|
| CN101752685A true CN101752685A (en) | 2010-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010121094A Pending CN101752685A (en) | 2010-02-04 | 2010-02-04 | Track shielding-type anti-corrosion high voltage-resistant earth bus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186146A (en) * | 2015-09-10 | 2015-12-23 | 国网浙江省电力公司金华供电公司 | Acid-corrosion-preventing copper-coated steel ground rod and manufacturing method therefor |
-
2010
- 2010-02-04 CN CN201010121094A patent/CN101752685A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186146A (en) * | 2015-09-10 | 2015-12-23 | 国网浙江省电力公司金华供电公司 | Acid-corrosion-preventing copper-coated steel ground rod and manufacturing method therefor |
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Open date: 20100623 |