CN108470601A - A kind of cable with monitoring line - Google Patents
A kind of cable with monitoring line Download PDFInfo
- Publication number
- CN108470601A CN108470601A CN201810503538.2A CN201810503538A CN108470601A CN 108470601 A CN108470601 A CN 108470601A CN 201810503538 A CN201810503538 A CN 201810503538A CN 108470601 A CN108470601 A CN 108470601A
- Authority
- CN
- China
- Prior art keywords
- monitoring
- cable
- monitoring line
- insulating layer
- conductor
- 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.)
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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
- H01B7/17—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
- H01B7/02—Disposition of insulation
- H01B7/0258—Disposition of insulation comprising one or more longitudinal lapped layers of insulation
-
- 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
- H01B7/322—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks comprising humidity sensing means
Abstract
The invention discloses a kind of cables with monitoring line, inside cable there is one or more the monitoring line group (8) in identical or different position is arranged, monitoring line group (8) includes two or more monitoring lines, monitoring line include conductor (9) and monitoring insulating materials (10), monitor insulating materials (10) conductor (9) outside；Monitoring insulating materials (10) plays insulating effect in normal state, and insulating effect is lost after monitoring insulating materials (10) meets water；Or monitoring line group (8) include conductor (9) and have it is multiple monitoring slots (12) monitoring insulating layers (13), monitor insulating layer (13) conductor (9) outside；The present invention inside cable by adding monitoring line, the quality condition of cable can be monitored, purposeful repair investigation can be carried out according to the data of the monitoring line feedback of cable simultaneously, the maintenance cost for reducing circuit avoids just carrying out replacement cable when cable transmission signal quality declines or circuit breaks down.
Description
Technical field
The present invention relates to a kind of cable, specifically a kind of cable with monitoring line belongs to technical field of cable.
Background technology
Since the worm plague of rats, the multidisciplinary crossed construction of project, amblent air temperature variation etc. some transient causes, cable are easy to
By extraneous mechanical damage, the especially outermost layer sheath of cable is easy to by environmental damage.After cable laying, with the passing of time day
Long, the moisture in air and soil immerses inside cable, corrodes armouring and shielded layer, and shielding properties and the machinery for reducing cable are anti-
Performance is protected, the service life of cable is seriously affected.Generally within the cable life period, when the decline of cable transmission signal quality or line
When road is broken down, relevant departments can just take measures to replace cable.
Therefore, it is necessary to be detected to cable fault.Patent document if application publication number is CN107884685A discloses
A kind of method for searching the damage of high-tension cable external insulation unobvious, includes the following steps：1. will be damaged exhausted outside cable ends
Edge peel off, expose shielded layer copper sheet, by cable ends with insulant prop with keep at a distance；2. by cable outer surface every one
Segment distance is wound with soft copper litzendraht wire and is grounded together with cable testing bridge；3. high voltage direct current generator output is terminated at cable one
The shielded layer at end；4. call through test power supply applies DC experiment voltage to cable shield, when microampere meter instruction has mutation,
It should stop continuing to boost and reducing test voltage until when microampere meter instruction is stablized, keep this voltage value；5. along cable surface
Spray；It 6. when microampere meter instruction has significant change, should stop spraying immediately, slowly increase test voltage observation microampere meter instruction
Whether continue to increase, impaired loci can be primarily determined in this area if continuing to increase.Although this method can be quickly found out height
The damage location of voltage cable.But detection mode is very complicated, needs special equipment, cannot achieve real-time detection, Bu Nengji
When obtain damage information.
Invention content
The object of the present invention is to provide a kind of cable with monitoring line, realization is monitored cable, finds electricity in time
Cable damages.
In order to reach above-mentioned technical purpose, a kind of technical solution of the invention is：
There is one or more to be arranged in identical or different position for a kind of cable with monitoring line, the cable inside
Line group is monitored, the monitoring line group includes two or more monitoring lines, and the monitoring line includes that conductor and the first monitoring are exhausted
Edge layer, the first monitoring insulating layer is outside conductor；The first monitoring insulating layer plays insulating effect in normal state, when
Insulation resistance declines or loses insulating effect after first monitoring insulating layer meets water.
According to the resistance calculations fault point of monitoring line, monitoring insulating layer insulation resistance after meeting water declines, and passes through the method
It monitors whether cable intakes, while the water inlet fault point of cable can be calculated according to the conductor DC resistance of monitoring line group, to
Realize the monitoring to cable fault point.
Insulating layer insulation resistance decline or two conductors (any two conductor) short circuit after meeting water are monitored, the method will be passed through
It monitors whether cable intakes, the water inlet fault point of cable can be equally calculated according to the conductor DC resistance of monitoring line.
Preferably, the monitoring line group has two monitoring lines, two monitoring line pair twists are together.Preferably, institute
Stating has the second monitoring insulating layer outside monitoring line group, the second monitoring insulating layer plays insulating effect in normal state, when
Insulation resistance declines or loses insulating effect after second monitoring insulating layer meets water.
First monitoring insulating layer, the second monitoring insulating layer play insulating effect in normal state, when the first monitoring insulation
Insulation resistance declines or loses insulating effect after layer, the second monitoring insulating layer chance water, preferably, the first monitoring insulation
Layer, the second monitoring insulating layer are formed by insulating paper, and insulating paper is outside conductor.
To effectively prevent monitoring line to meet water oxygen, the conductor is tinned copper conductor.
To make monitoring line group not had an impact to cable other performance, such as the bending property of cable, the monitoring line group
It is wrapped in inside cable using helical structure.
Line group is monitored to be arranged inside cable, specifically, such as the monitoring line group is arranged between oversheath and armor,
Or the monitoring line group is arranged between cable core, or be arranged simultaneously between oversheath and armor and cable core.By in electricity
Monitoring line group is respectively set in different levels inside cable, can judge the damage of cable according to the test data of monitoring line group in this way
Bad degree.
After cable is damaged into water, the insulation resistance for monitoring line declines, and insulation resistance is available exhausted between monitoring line group
Both threads data measured of the edge ohmmeter in any one end of monitoring line group.It can judge cable according to insulation resistance situation of change
Damage flooded condition.
Line pair is monitored for paper insulation, line is monitored when cable is intake to insulation resistance decline or short circuit.For not short-circuit
Monitoring line, may be used high-voltage breakdown mode will monitor line group puncture short, can measure respectively cable ends monitoring line group
Short-circuit resistance calculate fault point.
Another technical solution is：
There is one or more to be arranged in identical or different position for a kind of cable with monitoring line, the cable inside
Monitoring line group, the monitoring line group includes two or more monitoring lines, and the monitoring line includes conductor and monitor insulating layer,
The monitoring insulating layer is outside conductor；Multiple monitoring slots are provided on the monitoring insulating layer, the multiple monitoring slot interval is set
It sets.
Setting monitoring slot in interval on insulating layer is monitored, insulation resistance drastically declines after monitoring line group and meeting water, it can be determined that
Whether cable damages water inlet.
Preferably, the monitoring line of the monitoring line group is twisted together by a constant pitch spiral.Equally, the conductor is
Tinned copper conductor.
The present invention can monitor the quality feelings of cable by the way that addition monitors line (between such as cable core and outside armouring) inside cable
Condition (especially degree of impairment), while purposeful repair investigation can be carried out according to the data of the monitoring line feedback of cable, it reduces
The maintenance cost of circuit avoids just carrying out replacement cable when cable transmission signal quality declines or circuit breaks down.
Description of the drawings
Fig. 1 is the schematic diagram with monitoring line cable.
Fig. 2 is a kind of monitoring line sectional view.
Fig. 3 is another monitoring line schematic diagram.
Fig. 4 is another monitoring line sectional view.
Specific implementation mode
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Embodiment 1
As shown in Figure 1, a kind of cable (aluminium sheath railway digital signal cable) with monitoring line, including insulated wire cores 1,
Yarn 2 is pricked for polyester outside insulated wire cores 1, is cable core band 3 outside multiple cores.It is followed successively by aluminium sheath 4, liner layer outside cable core band 3
5, armor 6 (such as steel-tape armouring), oversheath 7.
There are two monitoring line groups 8, monitoring line group 8 to be wrapped in inside cable using helical structure for tool inside the cable.Tool
Body, monitoring line group 8 is separately positioned between oversheath 7 and armor 6 (armor 6 is outer with armouring gap spiral winding),
And between cable core.The quantity present invention of monitoring line group 8 does not limit, and the different layers or same layer in cable can be arranged
Different location.
The monitoring line group 8 includes two or more monitoring lines, and in the present embodiment, the monitoring line group 8 includes two
A monitoring line, as shown in Fig. 2, the monitoring line, which includes conductor 9 and first, monitors insulating layer 10, conductor 9 is tinned copper conductor, is had
Effect prevents monitoring line from meeting water oxygen, and the first monitoring insulating layer 10 is outside conductor 9.The first monitoring insulating layer 10 is normal
Insulating effect is played under state, insulation resistance declines or lose insulating effect after the first monitoring insulating layer 10 meets water.First prison
It surveys the insulation resistance after meeting water of insulating layer 10 to decline, monitors whether cable intakes by the method, while can be according to monitoring line
9 D.C. resistance of conductor of group 8 calculates the water inlet fault point of cable, to realize the monitoring to cable fault point.First monitoring is exhausted
Edge layer 10 is using " playing insulating effect in normal state, insulation resistance declines or lose insulating effect after meeting water " one kind
Material, in the present embodiment, the first monitoring insulating layer 10 is formed by insulating paper, and insulating paper is outside conductor 9.
Two monitoring lines of the monitoring line group 8, two monitoring line pair twists together, have the second prison outside two monitoring lines
Survey insulating layer 11.Second monitoring insulating layer 11 uses " plays insulating effect, insulation resistance declines after meeting water in normal state
Or lose insulating effect " a kind of material, in the present embodiment, the second monitoring insulating layer 11 is formed by insulating paper, and insulating paper is wrapped
It is monitored outside line at two.After meeting water, water enters monitoring line by the second monitoring insulating layer 11, at this point, the first monitoring of monitoring line
The insulation resistance after meeting water of insulating layer 10 declines or 9 short circuit of conductor of two monitoring lines, whether will monitor cable by the method
Water inlet can equally calculate the water inlet fault point of cable according to 9 D.C. resistance of conductor of monitoring line.
Two monitoring line groups 8 are separately positioned between oversheath 7 and armor 6 (with armouring gap spiral outside armor 6
Winding) and cable core between, in this way, can determine whether the damaged condition of cable by the test data of two monitoring line groups 8.According to
This principle, cable is interior in different level setting monitoring line groups 8, passes through the test data for monitoring line group 8, it can be determined that cable has
Which level body damages.
Embodiment 2
With embodiment 1, difference lies in：The monitoring line group 8 includes two or more monitoring lines, and monitoring line is by certain
Pitch spiral twists together, and the monitoring line includes conductor 9 and monitoring insulating layer 13, and the monitoring insulating layer 13 is in conductor 9
Outside.The conductor 9 is tinned copper conductor, and monitoring insulating layer 13 squeezes out cladding using polythene material.The monitoring insulating layer 13
On be provided with multiple monitoring slots 12, the setting of the multiple interval of monitoring slot 12.The depth of monitoring slot 12 exposes conductor 9.
Due to setting monitoring slot 12 on monitoring insulating layer 13, insulation resistance drastically declines after monitoring line group 8 meets water, can be with
Judge whether cable damages water inlet.
Above-described embodiment is not limit the invention in any way, every to be obtained by the way of equivalent substitution or equivalent transformation
Technical solution all fall in protection scope of the present invention.
Claims (13)
1. a kind of cable with monitoring line, it is characterised in that：Have one or more settings identical inside the cable or
The monitoring line group (8) of different location, the monitoring line group (8) include two or more monitoring lines, and the monitoring line includes
Conductor (9) and first monitoring insulating layer (10), it is described first monitoring insulating layer (10) conductor (9) outside；First monitoring is exhausted
Edge layer (10) plays insulating effect in normal state, and insulation resistance declines or loses after the first monitoring insulating layer (10) meets water
Insulating effect.
2. a kind of cable with monitoring line according to claim 1, it is characterised in that：The monitoring line group (8) has
Two monitoring lines, two monitoring line pair twists are together.
3. a kind of cable with monitoring line according to claim 1, it is characterised in that：The monitoring line group (8) has outside
There is the second monitoring insulating layer (11), the second monitoring insulating layer (11) plays insulating effect in normal state, when the second prison
It surveys insulation resistance after insulating layer (11) meets water and declines or lose insulating effect.
4. a kind of cable with monitoring line according to claim 3, it is characterised in that：The second monitoring insulating layer
(11) it is formed by insulating paper.
5. a kind of cable with monitoring line according to claim 1, it is characterised in that：The first monitoring insulating layer
(10) it is formed by insulating paper.
6. a kind of cable with monitoring line according to claim 1,2,3,4 or 5, it is characterised in that：The monitoring line
Group (8) is wrapped in using helical structure inside cable.
7. a kind of cable with monitoring line according to claim 1,2,3,4 or 5, it is characterised in that：The monitoring line
Group (8) is arranged between oversheath (7) and armor (6).
8. a kind of cable with monitoring line according to claim 1,2,3,4 or 5, it is characterised in that：The monitoring line
Group (8) is arranged between cable core.
9. a kind of cable with monitoring line according to claim 1,2,3,4 or 5, it is characterised in that：The monitoring line
Group (8) is two, and one is arranged between cable core, another is arranged between oversheath (7) and armor (6).
10. a kind of cable with monitoring line according to claim 1,2,3,4 or 5, it is characterised in that：The conductor
(9) it is tinned copper conductor.
11. a kind of cable with monitoring line, it is characterised in that：Have one or more settings identical inside the cable or
The monitoring line group (8) of different location, the monitoring line group (8) include two or more monitoring lines, and the monitoring line includes
Conductor (9) and monitoring insulating layer (13), the monitoring insulating layer (13) conductor (9) outside；It is set on the monitoring insulating layer (13)
It is equipped with multiple monitoring slots (12), the setting of the multiple monitoring slot (12) interval.
12. a kind of cable with monitoring line according to claim 11, it is characterised in that：The monitoring line group (8)
Monitoring line is twisted together by a constant pitch spiral.
13. a kind of cable with monitoring line according to claim 11, it is characterised in that：The conductor (9) is tin plating
Copper conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810503538.2A CN108470601B (en) | 2018-05-23 | 2018-05-23 | Cable with monitoring line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810503538.2A CN108470601B (en) | 2018-05-23 | 2018-05-23 | Cable with monitoring line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108470601A true CN108470601A (en) | 2018-08-31 |
| CN108470601B CN108470601B (en) | 2022-02-01 |
Family
ID=63261427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810503538.2A Active CN108470601B (en) | 2018-05-23 | 2018-05-23 | Cable with monitoring line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108470601B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111880053A (en) * | 2020-06-30 | 2020-11-03 | 江苏中利集团股份有限公司 | Test method for simulating dielectric strength attenuation and pressure resistance of long-term running cable |
| CN113281624A (en) * | 2021-05-24 | 2021-08-20 | 中铁电气化勘测设计研究院有限公司 | Urban rail transit direct-current armored cable insulation online monitoring system and method |
| CN113708106A (en) * | 2021-08-30 | 2021-11-26 | 深圳市恩联线缆有限公司 | Waterproof electronic wire harness |
| CN115840160A (en) * | 2023-02-14 | 2023-03-24 | 知鱼智联科技股份有限公司 | Active intelligent monitoring system and method for street lamp leakage in park |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111880053A (en) * | 2020-06-30 | 2020-11-03 | 江苏中利集团股份有限公司 | Test method for simulating dielectric strength attenuation and pressure resistance of long-term running cable |
| CN111880053B (en) * | 2020-06-30 | 2023-03-24 | 江苏中利集团股份有限公司 | Test method for simulating dielectric strength attenuation and pressure resistance of long-term running cable |
| CN113281624A (en) * | 2021-05-24 | 2021-08-20 | 中铁电气化勘测设计研究院有限公司 | Urban rail transit direct-current armored cable insulation online monitoring system and method |
| CN113708106A (en) * | 2021-08-30 | 2021-11-26 | 深圳市恩联线缆有限公司 | Waterproof electronic wire harness |
| CN115840160A (en) * | 2023-02-14 | 2023-03-24 | 知鱼智联科技股份有限公司 | Active intelligent monitoring system and method for street lamp leakage in park |
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| CN108470601B (en) | 2022-02-01 |
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