CN106099819A - A kind of cable sheath protection device - Google Patents
A kind of cable sheath protection device Download PDFInfo
- Publication number
- CN106099819A CN106099819A CN201610668028.1A CN201610668028A CN106099819A CN 106099819 A CN106099819 A CN 106099819A CN 201610668028 A CN201610668028 A CN 201610668028A CN 106099819 A CN106099819 A CN 106099819A
- Authority
- CN
- China
- Prior art keywords
- cable
- protective layer
- ground wire
- disconnector
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/22—Arrangements of earthing wires suspended between mastheads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
- H02H7/228—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices for covered wires or cables
Abstract
The invention discloses a kind of cable sheath protection device, weave ground wire including cable protective layer protector, disconnector, resin rack and copper；The high-voltage terminal of cable protective layer protector is connected with copper shield ground wire and the steel armour ground wire of cable termination respectively by nut；The earthing pole of cable protective layer protector is threadeded through shoulder hole with the screwed hole on disconnector top；One end of described copper braiding ground wire is connected by nut is fixing with the grounded metal screw rod of described disconnector bottom, and the other end is by being connected through the bolt of through hole with tower grounding cross-arm.The present invention is when cable protective layer protector generation carbonization punctures, and loop is blocked in disconnector blast, will not cause conductive exothermal and cable fault, expanding of Accident prevention, thus decreases economic loss.
Description
Technical field
The present invention relates to field of cable technology, particularly a kind of cable sheath protection device.
Background technology
Electric railway traction net 27.5kV cable and national grid 35kV single-core cable, being in operation can be to cable copper screen
Cover layer and steel armour produces impacting with high pressure, and then single-core cable and cable termination are caused damage.Cable protective layer protector is according to setting
Meter parameter has bears the limit, and when bearing excess impact (switching overvoltage, lightning strike induction voltage etc.), cable sheath is protected
Device bursts or carbonization punctures, and cable protective layer protector is permanent conduction state.If cable two ends copper shield and steel armour all connect
Ground conducting, then form big loop current, makes the transition joint on cable, cable and terminals heating, cause cable or centre,
Terminals breakdown accident.Installing cable protective layer protector (internal equipped with a zinc oxide valve plate) additional at single-core cable end, it leads to
Copper shield ground wire and the steel armour ground wire of crossing cable termination are connected on cable of copper shield layer and steel armour, the copper shield of whole piece cable
Being directly grounded with steel armour one end, the other end passes through cable protective layer protector ground connection again, and cable protective layer protector rushes suffering high pressure
Transient switching when hitting, is cut-off state at ordinary times.
When cable protective layer protector generation carbonization punctures, its outward appearance is the most unchanged, internal but because of the generation of loop current
And conductive exothermal, ultimately result in high tension cable and cable termination breakdown accident, during whole, operating maintenance personnel cannot send out
Now and in time process, have the accidents caused danger expanded.
Summary of the invention
The technical problem to be solved is to provide one can make maintainer find cable fault in time to prevent
The cable sheath protection device that only fault spreads.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is:
A kind of cable sheath protection device, weaves ground wire including cable protective layer protector, disconnector, resin rack and copper；
The high-voltage terminal of cable protective layer protector is connected with copper shield ground wire and the steel armour ground wire of cable termination respectively by nut；
The earthing pole of cable protective layer protector is threadeded through shoulder hole with the screwed hole on disconnector top；Described copper braiding ground wire
One end is connected by the grounded metal screw rod of nut and described disconnector bottom is fixing, the other end by through through hole bolt and
Tower grounding cross-arm is connected；The left end of described resin rack is provided with through hole, and right-hand member is provided with shoulder hole；Described shoulder hole and cable
The earthing pole of sheath protector is suitable；Described resin rack is by being bolted on tower grounding cross-arm through through hole.
Above-mentioned protection device, the outside of described resin rack is provided with projection.
Present configuration is simple, easy for installation, and when cable protective layer protector generation carbonization punctures, disconnector blast is blocked
Loop, will not cause conductive exothermal and cable fault, and field failure sign is obvious simultaneously, and maintainer can find that fault is also in time
Parts, expanding of Accident prevention are changed in maintenance, decrease economic loss.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Fig. 2 is disconnector internal structure schematic diagram；
Fig. 3 is cable terminal structure schematic diagram.
In figure, each label is expressed as, and 1, cable protective layer protector, 1-1, high-voltage terminal, 1-2, earthing pole, 2, de-
From device, 2-1, metal screw, 2-2, insulation crust, 2-3 disconnector cavity, 2-4, screwed hole, 2-5, metal spring, 2-6, resistance
Sheet, 2-7, empty booster, 2-8, pad, 2-9, empty booster groove, 3, resin rack, 3-1, through hole, 3-2, shoulder hole, 3-3, projection,
4, bolt, 5, copper braiding ground wire, 6, cable termination, 6-1, copper shield ground wire, 6-2, steel armour ground wire.
Detailed description of the invention
Below according to Fig. 1-3 and embodiment, the present invention is illustrated.
The present embodiment includes cable protective layer protector 1, disconnector 2, resin rack 3 and copper braiding ground wire 5；
The insulation crust 2-2 top of disconnector 2 is provided with tool female screwed hole 2-4, the insulation crust 2-of disconnector 2
2 bottoms are provided with through hole, and metal screw 2-1 is connected to insulation crust 2-2 bottom through the through hole of insulation crust 2-2 bottom；Metal
Center, screw rod 2-1 top is provided with sky booster groove 2-9, empty booster 2-7 and is arranged in sky booster groove 2-9, and empty booster 2-7 is provided with electricity
Resistance sheet 2-6, be provided with between empty booster 2-7 and resistor disc 2-6 pad 2-8, metal spring 2-5 be arranged on screwed hole 2-4 bottom with
Between resistor disc 2-6.
The left end of described resin rack 3 is provided with through hole 3-1, and right-hand member is provided with shoulder hole 3-2；Described shoulder hole 3-2 and cable
The earthing pole 1-2 of sheath protector 1 is suitable；Described resin rack 3 connects by being fixed on shaft tower through the bolt 4 of through hole 3-1
On ground cross-arm；The high-voltage terminal 1-1 of cable protective layer protector 1 by nut respectively with the copper shield ground wire 6-1 of cable termination 6
It is connected with steel armour ground wire 6-2；The earthing pole 1-2 of cable protective layer protector 1 is through the spiral shell of shoulder hole 3-2 with disconnector 2 top
Pit 2-4 is threaded；The one end of described copper braiding ground wire 5 the grounded metal screw rod by nut with described disconnector 2 bottom
2-1 is fixing to be connected, and the other end is connected with tower grounding cross-arm by the bolt 4 through through hole 3-1.
The outside of described resin rack 3 is provided with protruding 3-3, and convex role is to increase creep age distance.
The model of cable protective layer protector 1 is BHQ-9.0/600；The model of disconnector 2 is RBT-100/600.
Cable protective layer protector 1 is to use high energy heavy in section resistor disc as protected location, silicone rubber compacting overcoat conduct
External insulation, is provided with protruding 3-3 outside silicone rubber compacting overcoat.Cable protective layer protector 1 has that impact resistance is strong, protection feature
Good, smooth and beautiful appearance, anti-soil, the advantage such as ageing-resistant, non-maintaining, and the line-frequency induction electricity in cable run metal sheath can be limited
Stream, can reduce rapidly the power-frequency overvoltage in cable run metal sheath and impulse overvoltage.Normally work shape at cable run
During state, high tension cable sheath protector 1, in high resistance state, blocks the line-frequency induction current loop in cable metal sheath；When
Cable run occurs earth fault, lightning surge or switching overvoltage causing cable metal sheath to occur, and the highest power frequency is the most electric
When pressure or impulse overvoltage, high tension cable sheath protector 1 presents low resistance conduction state, makes dash current through cable sheath
Protector 1 spews out into rapidly the earth, plays the effect of protection protective coverings of cable insulation, and disconnector does not act on；When power frequency is the most electric
Pressure or impulse overvoltage excess impact cable protective layer protector 1 and when making cable protective layer protector 1 puncture or burst, disconnector wink
Between action, disconnect earth-return circuit, it is ensured that cable sheath does not has circulation to pass through, and simultaneously facilitates maintainer and finds fault and tie up in time
Repair replacing parts.Heat-explosion type disconnector 2 is to utilize the power frequency short circuit current flow through to produce electric arc in disconnector, ignites empty booster
Reach to depart from purpose.
When, after cable protective layer protector 1 punch through damage, disconnector 2 is blown, disconnector 2 lower copper braiding ground wire is sagging, whole
Individual loop disconnects.The present invention can prevent the generation of loop current, stops fault spread, simultaneously, it is simple to track walker finds, in time
Change a whole set of protector.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit other embodiments of the present invention, all
Any equivalent modifications of being done within the core technology of the present invention, replacement etc., should be included within the scope of the present invention.
Claims (2)
1. a cable sheath protection device, it is characterised in that: include cable protective layer protector (1), disconnector (2), resin torr
Frame (3) and copper braiding ground wire (5)；
The high-voltage terminal (1-1) of cable protective layer protector (1) by nut respectively with the copper shield ground wire of cable termination (6)
(6-1) it is connected with steel armour ground wire (6-2)；The earthing pole (1-2) of cable protective layer protector (1) is through shoulder hole (3-2) and takes off
Screwed hole (2-4) from device (2) top is threaded；
One end of described copper braiding ground wire (5) is fixed by the grounded metal screw rod (2-1) of nut with described disconnector (2) bottom
Connecting, the other end is by being connected through the bolt of through hole (3-1) (4) with tower grounding cross-arm；
The left end of described resin rack (3) is provided with through hole (3-1), and right-hand member is provided with shoulder hole (3-2)；Described shoulder hole (3-2) with
The earthing pole (1-2) of cable protective layer protector (1) is suitable；Described resin rack (3) is by the bolt through through hole (3-1)
(4) it is fixed on tower grounding cross-arm.
A kind of cable sheath protection device the most according to claim 1, it is characterised in that: outside described resin rack (3)
Side is provided with projection (3-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610668028.1A CN106099819A (en) | 2016-08-15 | 2016-08-15 | A kind of cable sheath protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610668028.1A CN106099819A (en) | 2016-08-15 | 2016-08-15 | A kind of cable sheath protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106099819A true CN106099819A (en) | 2016-11-09 |
Family
ID=57456686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610668028.1A Pending CN106099819A (en) | 2016-08-15 | 2016-08-15 | A kind of cable sheath protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106099819A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113612202A (en) * | 2021-05-31 | 2021-11-05 | 中国电力科学研究院有限公司 | Method and system for selecting high-voltage cable sheath protector |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2842713Y (en) * | 2005-09-09 | 2006-11-29 | 陈根林 | The carriage mechanism of built-in disconnector |
| CN201336195Y (en) * | 2008-12-23 | 2009-10-28 | 武汉雷泰新能源有限公司 | High-voltage power cable sheath protector |
| CN104091660A (en) * | 2014-06-12 | 2014-10-08 | 宜兴华源电工设备有限公司 | Lightning protection explosion-proof composite post type insulator with disengaging apparatus |
| CN204290193U (en) * | 2014-12-27 | 2015-04-22 | 中国西电电气股份有限公司 | A kind of electric cable protector |
| CN204517391U (en) * | 2015-03-30 | 2015-07-29 | 温州伊新电气有限公司 | A kind of faulty indication protector |
| CN205901237U (en) * | 2016-08-15 | 2017-01-18 | 保定合力达电缆附件有限公司 | Real -time protection device of cable sheath |
-
2016
- 2016-08-15 CN CN201610668028.1A patent/CN106099819A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2842713Y (en) * | 2005-09-09 | 2006-11-29 | 陈根林 | The carriage mechanism of built-in disconnector |
| CN201336195Y (en) * | 2008-12-23 | 2009-10-28 | 武汉雷泰新能源有限公司 | High-voltage power cable sheath protector |
| CN104091660A (en) * | 2014-06-12 | 2014-10-08 | 宜兴华源电工设备有限公司 | Lightning protection explosion-proof composite post type insulator with disengaging apparatus |
| CN204290193U (en) * | 2014-12-27 | 2015-04-22 | 中国西电电气股份有限公司 | A kind of electric cable protector |
| CN204517391U (en) * | 2015-03-30 | 2015-07-29 | 温州伊新电气有限公司 | A kind of faulty indication protector |
| CN205901237U (en) * | 2016-08-15 | 2017-01-18 | 保定合力达电缆附件有限公司 | Real -time protection device of cable sheath |
Non-Patent Citations (1)
| Title |
|---|
| 《牵引变电所运行检修作业》编委会: "《牵引变电所运行检修作业》", 31 October 2014, 中国铁道出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113612202A (en) * | 2021-05-31 | 2021-11-05 | 中国电力科学研究院有限公司 | Method and system for selecting high-voltage cable sheath protector |
| CN113612202B (en) * | 2021-05-31 | 2023-10-03 | 中国电力科学研究院有限公司 | Method and system for selecting high-voltage cable sheath protector |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161109 |