CN205901237U - Real -time protection device of cable sheath - Google Patents

Real -time protection device of cable sheath Download PDF

Info

Publication number
CN205901237U
CN205901237U CN201620880880.0U CN201620880880U CN205901237U CN 205901237 U CN205901237 U CN 205901237U CN 201620880880 U CN201620880880 U CN 201620880880U CN 205901237 U CN205901237 U CN 205901237U
Authority
CN
China
Prior art keywords
cable
ground wire
disconnector
hole
cable sheath
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.)
Active
Application number
CN201620880880.0U
Other languages
Chinese (zh)
Inventor
史宏杰
袁利军
王俊鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BAODING HELIDA CABLE ACCESSORIES Co Ltd
Original Assignee
BAODING HELIDA CABLE ACCESSORIES Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BAODING HELIDA CABLE ACCESSORIES Co Ltd filed Critical BAODING HELIDA CABLE ACCESSORIES Co Ltd
Priority to CN201620880880.0U priority Critical patent/CN205901237U/en
Application granted granted Critical
Publication of CN205901237U publication Critical patent/CN205901237U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a real -time protection device of cable sheath, weave the ground wire including cable sheath protector, disconnector, resin bracket and copper, cable sheath protector's high -voltage connection end is connected with cable termination's copper shield ground wire and steel armour ground wire respectively through the nut, cable sheath protector's earthing pole passes the screw hole threaded connection on shoulder hole and disconnector top, the ground wire was woven to copper one end pass through the nut with the ground connection metal screw rod fixed connection of disconnector bottom, the other end is connected with the tower grounding cross arm through the bolt that passes the through -hole. The utility model discloses when cable sheath protector took place the carbomorphism and punctures, the return circuit was cuted in the disconnector explosion, can not arouse electrically conductive generating heat and cable accident, the expansion of avoid accident to economic loss has been reduced.

Description

A kind of cable sheath real-time guard device
Technical field
This utility model is related 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 foundation sets 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 in permanent conduction state.If cable two ends copper shield and steel armour all connect Ground conducting, then form big loop current, makes transition joint on cable, cable and terminals heating, cause cable or centre, Terminals breakdown accident.Install cable protective layer protector (inside is equipped with a zinc oxide valve plate) in single-core cable end additional, it leads to Cross the copper shield ground wire of cable termination and steel armour ground wire is connected on cable of copper shield layer and steel armour, the copper shield of whole piece cable It is directly grounded with steel armour one end, the other end is grounded by cable protective layer protector again, cable protective layer protector rushes suffering from high pressure Transient switching when hitting, at ordinary times for cut-off state.
When cable protective layer protector occurs carbonization to puncture, its outward appearance is simultaneously unchanged, and inside is but because of the generation of loop current And conductive exothermal, ultimately result in high tension cable and cable termination breakdown accident, operating maintenance personnel cannot send out in whole process Process now and in time, have the accidents caused danger expanding.
Utility model content
Technical problem to be solved in the utility model be provide one kind can make maintainer find in time cable fault with Just prevent the cable sheath real-time guard device that fault spreads.
For solving above-mentioned technical problem, this utility model be the technical scheme is that
A kind of cable sheath real-time guard device, weaves ground including cable protective layer protector, disconnector, resin rack and copper Line;The high-voltage terminal of cable protective layer protector is connected with the copper shield ground wire of cable termination and steel armour ground wire respectively by nut Connect;The earthing pole of cable protective layer protector is threadeded through shoulder hole with the screwed hole on disconnector top;Described copper braiding ground One end of line is fixedly connected with the grounded metal screw rod of described disconnector bottom by nut, and the other end is by the spiral shell through through hole Bolt is connected with tower grounding cross-arm;The left end of described resin rack is provided with through hole, and right-hand member is provided with shoulder hole;Described shoulder hole with The earthing pole of cable protective layer protector is adapted;Described resin rack is by being bolted to tower grounding cross-arm through through hole On.
Above-mentioned protection device, the outside of described resin rack is provided with projection.
This utility model structure is simple, easy for installation, and when cable protective layer protector occurs carbonization to puncture, disconnector explodes Block loop, conductive exothermal and cable fault will not be caused, substantially, maintainer can find event to field failure sign in time simultaneously Hinder and keep in repair replacing part, expanding of Accident prevention, decrease economic loss.
Brief description
Fig. 1 is this utility model structural representation;
Fig. 2 is disconnector internal structure schematic diagram;
Fig. 3 is cable terminal structure schematic diagram.
The each label of in figure 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 Piece, 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, 4th, bolt, 5, copper braiding ground wire, 6, cable termination, 6-1, copper shield ground wire, 6-2, steel armour ground wire.
Specific embodiment
Below according to Fig. 1-3 and embodiment, this utility model 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 passes through the through hole of insulation crust 2-2 bottom to be connected to insulation crust 2-2 bottom;Metal Screw rod 2-1 top center is provided with sky booster groove 2-9, and empty booster 2-7 is arranged in sky booster groove 2-9, and empty booster 2-7 is provided with electricity Resistance piece 2-6, be provided with pad 2-8 between empty booster 2-7 and resistor disc 2-6, 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 adapted;Described resin rack 3 is fixed on shaft tower by the bolt 4 through through hole 3-1 and connects On ground cross-arm;The high-voltage terminal 1-1 of cable protective layer protector 1 passes through the nut copper shield ground wire 6-1 with cable termination 6 respectively It is connected with steel armour ground wire 6-2;The earthing pole 1-2 of cable protective layer protector 1 passes through the spiral shell of shoulder hole 3-2 and disconnector 2 top Pit 2-4 is threaded;Described copper weaves the grounded metal screw rod by nut and described disconnector 2 bottom for the one end of ground wire 5 2-1 is fixedly 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 raised 3-3, and raised role is to increase creep age distance.
Model bhq-9.0/600 of cable protective layer protector 1;Model rbt-100/600 of disconnector 2.
Cable protective layer protector 1 is as protection location using high energy heavy in section resistor disc, and overcoat conduct suppressed by silicone rubber External insulation, is provided with raised 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, ageing-resistant, non-maintaining the advantages of, and the line-frequency induction electricity in cable run metal sheath can be limited Stream, can reduce rapidly power-frequency overvoltage and the impulse overvoltage in cable run metal sheath.In cable run normal work shape During state, high tension cable sheath protector 1 is in high resistance state, blocks the line-frequency induction current loop in cable metal sheath;When Earth fault in cable run, and lightning surge or switching overvoltage lead to the very high power frequency of cable metal sheath appearance excessively 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 excessively electric Pressure or impulse overvoltage excess impact cable protective layer protector 1 and when so that cable protective layer protector 1 is punctured or burst, disconnector wink Between action, disconnect earth-return circuit it is ensured that cable sheath does not have circulation to pass through, simultaneously facilitate maintainer and find fault tieing up in time Repair replacing part.Heat-explosion type disconnector 2 is to produce electric arc in disconnector using the power frequency short circuit current flowing through, and ignites empty booster To reach disengaging purpose.
After cable protective layer protector 1 punch through damage, disconnector 2 is blown, and disconnector 2 lower copper braiding ground wire is sagging, whole Individual loop disconnects.This utility model can prevent the generation of loop current, stops fault spread, meanwhile, be easy to track walker and find, Change a whole set of protector in time.
The foregoing is only preferred embodiment of the present utility model, be not intended to limit other embodiment party of the present utility model Formula, all any equivalent modifications done within core technology of the present utility model, replacement etc., should be included in this utility model Protection domain within.

Claims (2)

1. a kind of cable sheath real-time guard device it is characterised in that: include cable protective layer protector (1), disconnector (2), tree Fat bracket (3) and copper braiding ground wire (5);
The high-voltage terminal (1-1) of cable protective layer protector (1) passes through the nut copper shield ground wire with cable termination (6) respectively (6-1) it is connected with steel armour ground wire (6-2);The earthing pole (1-2) of cable protective layer protector (1) passes through shoulder hole (3-2) and takes off Screwed hole (2-4) from device (2) top is threaded;
One end that described copper weaves ground wire (5) is fixing with the grounded metal screw rod (2-1) of described disconnector (2) bottom by nut Connect, the other end is connected with tower grounding cross-arm by the bolt (4) through through hole (3-1);
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 adapted;Described resin rack (3) is by the bolt through through hole (3-1) (4) it is fixed on tower grounding cross-arm.
2. a kind of cable sheath real-time guard device according to claim 1 it is characterised in that: described resin rack (3) Outside be provided with raised (3-3).
CN201620880880.0U 2016-08-15 2016-08-15 Real -time protection device of cable sheath Active CN205901237U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620880880.0U CN205901237U (en) 2016-08-15 2016-08-15 Real -time protection device of cable sheath

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620880880.0U CN205901237U (en) 2016-08-15 2016-08-15 Real -time protection device of cable sheath

Publications (1)

Publication Number Publication Date
CN205901237U true CN205901237U (en) 2017-01-18

Family

ID=57781521

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620880880.0U Active CN205901237U (en) 2016-08-15 2016-08-15 Real -time protection device of cable sheath

Country Status (1)

Country Link
CN (1) CN205901237U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106099819A (en) * 2016-08-15 2016-11-09 保定合力达电缆附件有限公司 A kind of cable sheath protection device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106099819A (en) * 2016-08-15 2016-11-09 保定合力达电缆附件有限公司 A kind of cable sheath protection device

Similar Documents

Publication Publication Date Title
CN202444178U (en) Electric locomotive interior network side cabinet
CN203386547U (en) Integrated fixed external series gap self-disengaging metal oxide lightning arrester insulators
CN207701299U (en) A kind of breakdown prevention type wind electricity blade lightning arrester
CN203250598U (en) Anti-thunder tension insulator
CN201307473Y (en) Lightning protector for 10 kV line
CN201608064U (en) 10kV multifunctional operating rod
CN204964657U (en) Test device suitable for research 10kV line gap ground connection form
CN205901237U (en) Real -time protection device of cable sheath
CN203659557U (en) Line type fixed clearance metal oxide arrester
CN2852338Y (en) Composite casing zinc oxide lightning arrester
CN208985796U (en) A kind of arrester that failure is visual
CN203260987U (en) High-voltage line lightning arrester
CN106099819A (en) A kind of cable sheath protection device
CN201498289U (en) 10 KV post lightning arrester
CN203481768U (en) Spherical fixed outer-gap lightning arrester for 10kV system insulating overhead line tension rod
CN206878312U (en) A kind of combined pin type arrester
CN202601858U (en) Lightning-proof gap type grounding device
CN207442184U (en) The fixation external series gap lightning arrester that a kind of low residual voltage, deterioration can be shown
CN207503744U (en) A kind of rear loading type arrester
CN208337122U (en) A kind of 10kV suspended insulated guide wire with the anti-lightning strike broken string of shielded layer
CN203289052U (en) External column-type voltage limiter for overhead line insulated conductor
CN205407116U (en) Insulating vaulting pole of wire that high voltage live operation was used
CN205004117U (en) Composite insulator
CN2456279Y (en) Zinc oxide lightning arrester for power lines
CN204464928U (en) Be applied to overhead route system and there is the wiring system moving freely function

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant