CN110379552A - Earth leakage protective system can be carried out to cable - Google Patents
Earth leakage protective system can be carried out to cable Download PDFInfo
- Publication number
- CN110379552A CN110379552A CN201810329793.XA CN201810329793A CN110379552A CN 110379552 A CN110379552 A CN 110379552A CN 201810329793 A CN201810329793 A CN 201810329793A CN 110379552 A CN110379552 A CN 110379552A
- Authority
- CN
- China
- Prior art keywords
- cable
- protective layer
- detection module
- cable body
- module
- 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.)
- Withdrawn
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1875—Multi-layer sheaths
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/2806—Protection against damage caused by corrosion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/32—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks
- H01B7/328—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks comprising violation sensing means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses can carry out earth leakage protective system to cable, it is arranged including cable body in ground end, it further include being provided with protective layer on the outside of the cable body, there is gap between the cable body and protective layer, the protective layer carries out protection partition by isolation board every 1km, described isolation board one end is connect with protective layer inner wall, the other end is connect with cable body outer wall, different alarm module and detection module are provided in the protective layer of each partition, the signal that control centre's receiving alarm module is sent, real-time monitoring is carried out to cable operating condition, and after receiving the alarm signal of alarm module, the transmission of electricity of cable body is disconnected.The various detection modules and alarm module being arranged in gap among cable body and protective layer, timely cable situation can be detected, and the data that will test are sent to control centre in real time, and the staff of control centre is allowed to understand the working condition of every section of cable.
Description
Technical field
The present invention relates to a kind of leakage protection systems, and in particular to can carry out earth leakage protective system to cable.
Background technique
Overhead transmission line powered operation failure rate is relatively high, operation and maintenance cost is higher, reliability is low, general in present city
And underground power cable power supply.But underground power cable insulating layer is when there is leak current fault by destruction, with conventional side
Method is difficult to judge drain conditions and position, need to be detected using special detection device.Earth detector is usually with measurement cable
The method of ground resistance, although this method is scientific, detection accuracy is high, needs professional to operate, and cumbersome.
Summary of the invention
It is difficult the technical problem to be solved by the present invention is to detect faulty section after the cable leakage of mother's ground end, and cost
Higher, cable can't carry out effective earth leakage protective after electric leakage, and it is an object of that present invention to provide can leak to cable
The system of electric protection, solves the problem above-mentioned.
The present invention is achieved through the following technical solutions:
Earth leakage protective system can be carried out to cable, including cable body is arranged in ground end, further includes the cable sheet
External side is provided with protective layer, has gap between the cable body and protective layer, the protective layer passes through isolation board every 1km
Protection partition is carried out, described isolation board one end is connect with protective layer inner wall, and the other end is connect with cable body outer wall, each partition
Protective layer in be provided with different alarm module and detection module, the signal that control centre's receiving alarm module is sent, to electricity
Cable operating condition carries out real-time monitoring, and after receiving the alarm signal of alarm module, and the transmission of electricity of cable body is disconnected.Electricity
In gap among cable ontology and protective layer be arranged various detection modules and alarm module, can timely to cable situation into
Row detection, and the data that will test are sent to control centre in real time, and the staff of control centre is allowed to understand the work of every section of cable
Make situation, separated by the protection for the isolation board being arranged in protective layer, can clearly judge specifically which section protection in this way
Layer goes wrong, by control centre, can quick monitoring problem section, deal in time.And the double shielding used
Structure installs one layer of protective layer additional on the outside of original cable body, cable can be allowed to operate for a long time in ground end, from mechanical wear
Destruction.It is provided with trigger control circuit in the detection module, normally opened relay and trigger winding are provided in the circuit,
After cable leakage, electric current enters in detection module, and electric current triggers trigger winding, and trigger winding is acted normally opened relay
Device closure carries out data transmission in the communication component allowed in current lead-through to detection module.
Further, the detection module includes current detection module and communication transmission module, the current detection module
Whether there is electric current in detector gap, is sent a command in alarm module after detecting electric current by communication transmission module.In electricity
After the rupture of cable ontology, can detecte by current detection module has electric current into gap, will be triggered by communication transmission module afterwards
Instruction send, prompt cable leaked electricity.And can by the isolation board of setting, be apparent from be any section every
It goes wrong from plate.
Further, the alarm module will test data and be sent to control after the instruction for receiving detection module transmission
In center processed.Alarm module just starts after the instruction for being connected to detection module, has in the gap of protective layer and cable body at this time
Electric current passes through, it is possible to and it can puncture protective layer and cause to leak electricity, be sent alarm to control centre by alarm module at this time, Ke Yirang
Control centre understands the drain conditions of cable, handles it.
Further, the isolation board uses rubber material.The effect of isolation board is first is that in order to separate protective layer, conveniently
It determines that the cut cable for generation of being out of order causes to leak electricity second is that preventing cable body from puncturing protective layer after cable leakage, breaks
Bad whole cable.
Further, the protective layer inner wall, cable body outer wall and isolation board outer surface are coated with wire enamel, described
The polyester-imide that wire enamel uses is material.It is that can adapt to because of its mechanical strength with higher using wire enamel
Bending deformation when being laid with, and there is good heat resistance, impact resistance, oil resistivity, it can be ruptured in cable body
Effective protection protective layer is not breakdown afterwards, and using polyester-imide as main material, allowing for polyester-imide is enameled wire
F grades of materials in paint, heat resisting temperature can be up to 155 DEG C, and when coping with the extreme geothermal environment of ground end or rupture, moment is produced
When raw thermal energy, there is good effect.
Compared with prior art, the present invention having the following advantages and benefits:
1, the present invention can carry out earth leakage protective system to cable, operating condition that can in real time to ground end bottom cable
It is monitored with security situation；
2, the present invention can carry out earth leakage protective system to cable, sprayed, can be carried out effectively insulation protection,
Protect protective layer not breakdown.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is schematic structural view of the invention.
Fig. 2 is cross-sectional view schematic diagram of the present invention.
Label and corresponding parts title in attached drawing:
1- cable body, 2- protective layer, 21- alarm module, 22- detection module, 3- isolation board.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment
As shown in Figure 1, 2, the present invention can carry out earth leakage protective system to cable, including cable body 1 is arranged on ground
Bottom further includes being provided with protective layer 2 on the outside of the cable body 1, has gap between the cable body 1 and protective layer 2, described
Protective layer 2 carries out protection partition by isolation board 3 every 1km, and described 3 one end of isolation board is connect with 2 inner wall of protective layer, the other end
It is connect with 1 outer wall of cable body, different alarm module 21 and detection module 22 is provided in the protective layer 2 of each partition, controlled
The signal that center receiving alarm module 21 processed is sent carries out real-time monitoring to cable operating condition, and is receiving alarm module
After 21 alarm signal, the transmission of electricity of cable body 1 is disconnected.It is arranged in cable body 1 and the gap among protective layer 2 various
Detection module 22 and alarm module 21 can timely detect cable situation, and the data that will test are sent in real time
Control centre allows the staff of control centre to understand the working condition of every section of cable, passes through the isolation being arranged in protective layer
The protection of plate separates, and can clearly judge specifically which section protective layer goes wrong in this way, can be quick by control centre
Monitoring problem section, deal in time.And the double-layered protecting structure used installs one layer additional on the outside of original cable body
Protective layer can allow cable to operate for a long time in ground end, from the destruction of mechanical wear.
The detection module 22 includes current detection module and communication transmission module, the current detection module detector gap
Inside whether there is electric current, is sent a command in alarm module 21 after detecting electric current by communication transmission module.In cable body
After rupture, can detecte by current detection module has electric current into gap, passes through communication transmission module afterwards for the instruction of triggering
It sends, cable is prompted to leak electricity.And can be by the isolation board of setting, being apparent from is that the isolation board of which section goes out
Existing problem.
The alarm module 21 will test data and be sent to control centre after the instruction for receiving the transmission of detection module 22
It is interior.Alarm module just starts after the instruction for being connected to detection module, has electric current logical in the gap of protective layer and cable body at this time
It crosses, it is possible to protective layer can be punctured and cause to leak electricity, sent alarm to control centre by alarm module at this time, can be allowed in control
The heart understands the drain conditions of cable, handles it.
The isolation board 3 uses rubber material.The effect of isolation board conveniently determines event first is that in order to separate protective layer
The cut cable that barrier occurs causes to leak electricity second is that preventing cable body from puncturing protective layer after cable leakage, destroys whole electricity
Cable.2 inner wall of protective layer, 1 outer wall of cable body and 3 outer surface of isolation board are coated with wire enamel, and the wire enamel is adopted
Polyester-imide is material.It is that can adapt to when being laid with because of its mechanical strength with higher using wire enamel
Bending deformation, and have good heat resistance, impact resistance, oil resistivity, can cable body rupture after effective protection
Protective layer is not breakdown, and using polyester-imide as main material, allowing for polyester-imide is F grades of materials in wire enamel
Material, heat resisting temperature can be up to 155 DEG C, the thermal energy that moment generates when coping with the extreme geothermal environment of ground end or rupture
When, there is good effect.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (3)
1. earth leakage protective system can be carried out to cable, including cable body (1) is arranged in ground end, further includes the cable sheet
It is provided with protective layer (2) on the outside of body (1), there is gap between the cable body (1) and protective layer (2), the protective layer (2) is every
Carry out protection partition by isolation board (3) every 1km, described isolation board (3) one end is connect with protective layer (2) inner wall, the other end and
The connection of cable body (1) outer wall, the protective layer (2) of each partition is interior to be provided with different alarm module (21) and detection module
(22), the signal that control centre's receiving alarm module (21) is sent carries out real-time monitoring to cable operating condition, and is receiving
After the alarm signal of alarm module (21), the transmission of electricity of cable body (1) is disconnected, which is characterized in that the detection module (22)
Inside be provided with trigger control circuit, normally opened relay and trigger winding be provided in the circuit, after cable leakage, electric current into
Enter in detection module (22), electric current triggers trigger winding, and normally opened relay is closed by trigger winding movement, and electric current is allowed to lead
Carry out data transmission in the communication component passed in detection module (22), the detection module (22) includes current detection module
And communication transmission module, whether there is electric current in the current detection module detector gap, is passed after detecting electric current by communication
Defeated module is sent a command in alarm module (21), and protective layer (2) inner wall, cable body (1) outer wall and isolation board (3) are outside
Surface is coated with wire enamel, and the polyester-imide that the wire enamel uses is material.
2. according to claim 1 can carry out earth leakage protective system to cable, which is characterized in that the alarm module
(21) after the instruction for receiving detection module (22) transmission, data is will test and be sent in control centre.
3. according to claim 1 can carry out earth leakage protective system to cable, which is characterized in that the isolation board
(3) rubber material is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810329793.XA CN110379552A (en) | 2018-04-13 | 2018-04-13 | Earth leakage protective system can be carried out to cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810329793.XA CN110379552A (en) | 2018-04-13 | 2018-04-13 | Earth leakage protective system can be carried out to cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110379552A true CN110379552A (en) | 2019-10-25 |
Family
ID=68243274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810329793.XA Withdrawn CN110379552A (en) | 2018-04-13 | 2018-04-13 | Earth leakage protective system can be carried out to cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110379552A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594074A (en) * | 2018-04-28 | 2018-09-28 | 三电电缆股份有限公司 | A kind of cable automatic double surface gluer |
-
2018
- 2018-04-13 CN CN201810329793.XA patent/CN110379552A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594074A (en) * | 2018-04-28 | 2018-09-28 | 三电电缆股份有限公司 | A kind of cable automatic double surface gluer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191025 |
|
| WW01 | Invention patent application withdrawn after publication |