CN113125126A - Fault positioning photoelectric/electric monitoring cable - Google Patents
Fault positioning photoelectric/electric monitoring cable Download PDFInfo
- Publication number
- CN113125126A CN113125126A CN202110552275.6A CN202110552275A CN113125126A CN 113125126 A CN113125126 A CN 113125126A CN 202110552275 A CN202110552275 A CN 202110552275A CN 113125126 A CN113125126 A CN 113125126A
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- optical
- cable
- monitoring
- electrical
- sealing head
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/025—Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Abstract
The invention provides a fault positioning optical/electrical monitoring cable which comprises a female insulation sealing head, an optical/electrical cable and a monitoring monument pre-buried near an optical cable joint box; a monitoring markstone matching steel pipe is embedded in the top of the monitoring markstone, and the lower end of the female insulating sealing head is clamped on the top of the monitoring markstone matching steel pipe through a sealing element; one end of the optical/electric cable is connected with the female insulation sealing head, and the other end of the optical/electric cable sequentially penetrates through the monitoring markstone matching steel pipe and the monitoring markstone and is connected with the upper optical cable and the lower optical cable of the optical cable joint box; the insulating sealing head also comprises a male insulating sealing head matched with the female insulating sealing head; the male insulating sealing head is connected with a testing optical/electric cable connected with a tester. The device need not to excavate, open the splice box can be through the accurate fault point of location of fault location photoelectricity monitoring cable, easy and simple to handle, safe and reliable.
Description
Technical Field
The invention belongs to the technical field of direct-buried optical cable fault detection, and particularly relates to a fault positioning optical/electrical monitoring cable.
Background
The long-distance direct-buried optical cable line has long communication distance, and the conditions that the lengths of the reserved optical cables at positions such as a road, a river, a bridge and a joint do not meet the specification exist in the processes of optical cable line construction, rush repair and drawing. If the maintenance team does not have a detailed ground length-road length-cable length comparison table, once an optical cable line fails, if a fault clue does not exist on the site ground surface, rush-repair personnel often difficultly and accurately position a fault point according to terminal test data and drawing given by a machine room, and most possibly have a large error with an actual fault point, and need to search nearby joint points, excavate a joint box, test, position and restore again; when the joint box is excavated and opened, the joint box is easy to damage, so that the loss of the original joint in the connection process is increased, the service is interrupted in serious cases, the stripping connection needs to be performed again, the duration of obstacles is greatly prolonged, the first-aid repair efficiency is influenced, and even the smooth communication is seriously influenced.
For effectively improving the line clearance ageing, combine the working reality, research and development a section need not to excavate, open the splice box, can pass through the accurate fault point of location of fault location photoelectricity monitoring cable, easy and simple to handle, quick effective, safe and reliable.
Therefore, the invention provides a fault positioning optical/electrical monitoring cable.
Disclosure of Invention
In order to solve the problems, the invention provides a fault positioning optical/electrical monitoring cable.
In order to achieve the above purpose, the present invention provides the following technical solutions.
A fault positioning optical/electrical monitoring cable comprises a female insulation sealing head, an optical/electrical cable and a monitoring monument pre-buried near an optical cable joint box;
a monitoring markstone matching steel pipe is embedded in the top of the monitoring markstone, and the lower end of the female insulating sealing head is clamped on the top of the monitoring markstone matching steel pipe through a sealing element;
one end of the optical/electric cable is connected with the female insulation sealing head, and the other end of the optical/electric cable sequentially penetrates through the monitoring markstone matching steel pipe and the monitoring markstone and is connected with the upper optical cable and the lower optical cable of the optical cable joint box;
the insulating sealing head also comprises a male insulating sealing head matched with the female insulating sealing head; the male insulating sealing head is connected with a testing optical/electric cable connected with a tester.
Preferably, the optical/electrical cable comprises a stranded root cable, a stranded root optical cable and a filled solid core wire, wherein the cables are respectively electrically connected with the reinforced cores of the upper optical cable and the lower optical cable in the optical cable joint box and the metal outer sheath; the optical cables in the optical/electric cables are respectively butted with the fiber cores of the upper optical cable pair and the lower optical cable pair; the top end of the female insulation sealing head is provided with a plurality of test terminals, and each test terminal is connected with one optical cable or electric cable of the optical/electric cable and carries out color spectrum position number marking.
Preferably, the female insulating sealing head is a plastic cup with a sealing cover; an insulating layer is arranged outside the optical/electric cable and is scattered in the plastic cup; and the plastic cup and the optical/electric cable are filled by a filling agent, and the filling agent is cable core ointment.
Preferably, the plastic cup and the optical/electrical cable are sealed by a heat-shrinkable sleeve, and the heat-shrinkable sleeve sequentially comprises an outer PE sheath, an aluminum tape, an oil paste layer, an inner PE sheath and a water-blocking tape.
Preferably, the sealing element is a tubular polyethylene heat shrinkable material, and the inner wall of the polyethylene heat shrinkable material is coated with a hot melt adhesive.
Preferably, the sealing element is a mixture of an adhesive, vulcanized rubber and a paste encapsulation.
Preferably, the system also comprises two water inlet monitoring modules; the water inlet monitoring module is fixedly arranged at the bottom of the optical cable joint box shell and is electrically connected with the two cables of the optical/electric cable.
Preferably, the top of the monitoring markstone matching steel pipe is in threaded fit with a monitoring markstone screw cap.
Preferably, the outer diameter of the copper conductor of the optical/electrical cable is not less than 0.7 mm; the outer diameter of the optical/electric cable is 12mm-15mm, and the outer diameter of the optical cable is 3mm-6 mm.
The invention has the beneficial effects that:
the device is simple, convenient and quick in fault point positioning, intensive, efficient and high in accuracy;
the device can be connected with the monitoring end in the monitoring monument only through the testing cable without excavating and opening the joint box, and can carry out bidirectional fault testing on two ends of the optical cable line, so that the position of a fault point can be accurately calculated, the error range is small, and the test and calculation results in two directions are comprehensively analyzed and compared, so that the specific position of the fault point is more accurately judged;
the device is used for fault testing comparatively nimble, declares the fault point simple and efficient, more convenient, accurate high efficiency, can significantly reduce the waste of unnecessary financial resources and manpower, shortens circuit and salvagees the time, promotes and salvages efficiency.
The invention is further described with reference to the following figures and examples.
Drawings
FIG. 1 is a schematic diagram of the overall structure and connection of a fault locating optical/electrical monitoring cable according to an embodiment of the present invention;
FIG. 2 is an assembly view of a female insulating sealing head of a fault locating optical/electrical monitoring cable in an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a test terminal of a fault locating optical/electrical monitoring cable in an embodiment of the invention;
fig. 4 is a schematic diagram of the overall structure and connection of the fault locating optical/electrical test cable in the embodiment of the present invention.
Reference numerals: 1. a female insulating seal head; 2. optical/electrical cables; 3. a sealing element; 4. an optical cable splice closure; 5. monitoring a steel pipe matched with the monument; 6. monitoring a monument; 7. monitoring a monument screw cap; 8. a water inlet monitoring module; 9. an insulating layer; 10. ointment for cable cores; 11. a water blocking tape; 12. an inner PE protective sleeve; 13. an ointment layer; 14. an aluminum strip; 15. an outer PE protective sleeve; 16. a male insulating seal head; 17. the test is with optical/electrical cables.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A fault locating optical/electrical monitoring cable, as shown in figures 2 and 4; the method comprises the following steps:
the monitoring cable comprises a female insulation sealing head 1, an optical/electric cable 2 and a sealing element 3, as shown in FIG. 2;
the test cable comprises a male insulating sealing head 16, a test light/cable 17 and test clips (blue, orange, green, brown, grey, white, red, yellow), as shown in fig. 4;
the optical/electric cable 2 comprises 6 stranded electric cables, 2 optical cables and filled solid core wires, one end of the optical/electric cable penetrates through the monitoring monument 6 and is connected with the female insulation sealing head 1; the lower end of the female insulating sealing head 1 is clamped at the top of a monitoring monument matching steel pipe 5 through a sealing element 3, and the monitoring monument matching steel pipe 5 is embedded at the top end of a monitoring monument 6;
the top end of the female insulation sealing head 1 is provided with a plurality of test terminals, each test terminal is connected with one optical cable or electric cable of the optical/electric cable 2, and the color spectrum position number is marked; the female insulating sealing head 1 is a plastic cup with a sealing cover, and the plastic cup and the optical/electric cable 2 are sealed through a heat-shrinkable sleeve; the outside of the optical/electric cable 2 is provided with an insulating layer 9; the plastic cup and the optical/electric cable 2 are filled with filling agent;
the other end of the optical/electric cable 2 is connected with an optical cable joint box 4, wherein the electric cable is respectively and electrically connected with the reinforced cores and the metal outer sheaths of the upper optical cable and the lower optical cable in the optical cable joint box 4; the optical cable in the optical/electric cable 2 is respectively butted with the fiber cores of the upper optical cable and the lower optical cable; specifically, the heat-shrinkable sleeve sequentially comprises an outer PE sheath 15, an aluminum tape 14, an oil paste layer 13, an inner PE sheath 12 and a water-blocking tape 11; the filling agent is cable core ointment 10, which is shown in figure 3 specifically;
two water inlet monitoring modules 8; the water inlet monitoring module is fixedly arranged at the bottom of the shell of the optical cable joint box 4 and is electrically connected with two cables of the optical/electric cable 2;
the sealing method can adopt heat shrinkage sealing or a combination of the two methods: (1) the sealing element is a tubular polyethylene heat-shrinkable material, and the inner wall of the polyethylene heat-shrinkable material is coated with hot melt adhesive; (2) the sealing element is a mixture of adhesive, vulcanized rubber and paste encapsulation and is sealed by mechanical means.
Preferably, 5 top screw-thread fit of supporting steel pipe of monitoring monument have monitoring monument spiral shell lid 7, and have following function: the internal components of the monitoring monument 6 and the monitoring monument 6 are poured into a whole and cannot generate displacement such as up-down displacement, left-right displacement, rotation and the like; fixing and protecting the female insulating sealing head 1 from mechanical damage; the monitoring monument 6 inner member and the block should adopt left threaded connection, only can open with the specialized tool.
In this embodiment, the outer diameter of the copper conductor of the optical/electrical cable 2 is not less than 0.7 mm; the outer diameter of the optical/electric cable 2 is 12mm-15mm, and the outer diameter of the optical cable is 3mm-6 mm; the number of the core wires is 8 (6 are cables, and 1 pair is 2-core optical cables); as shown in fig. 2;
in the female insulating sealing head 1, the core wires of the optical/electric cable 2 are scattered in the plastic cup and then are filled and sealed by a filling agent; the female insulating sealing head 1 needs to have 8 test terminals. And an optical/cable core line color spectrum position number mark is arranged beside the test terminal. The plastic cup and the optical/electric cable 2 are sealed by a heat-shrinkable sleeve; wherein, the cable: blue, orange, green, brown, gray, and white; optical cable: red and yellow as shown in FIG. 3;
when the cable is installed, the other end of the monitoring cable is stripped off the sheath, the insulating layer on the core wire is stripped off, and 8 conductors are exposed. The blue and orange colors are positioned at the 1 st and 2 nd cores of the test cable and are connected with the reinforced core in the optical cable joint box 4; the green and brown are positioned at the 3 rd and 4 th core positions, the other ends are respectively and electrically connected with the 2 continuous optical cable sheath metal layers, 1 and 3 are arranged up, and 2 and 4 are arranged down; the gray and white are positioned at the 5 th and 6 th core positions, and the other ends of the gray and white are respectively connected with a water inlet monitoring module 8 of the optical cable joint box and fixed in the optical cable joint box; the red and yellow are positioned at the 7 th and 8 th core positions, the other ends of the red and yellow are respectively butted with the last 1 fiber core in the optical cable joint box, the 7 is arranged upwards, and the 8 is arranged downwards; as shown in particular in fig. 1;
during testing, rush repair personnel can carry a test cable with one, as shown in fig. 4, one end of the test cable is connected with a monitoring cable male insulation sealing head 16, and one end of the test cable is provided with 6 cable core wire test clamps and 2 FC joints; when the positioning test is needed, only the FC joint is connected with the OTDR tester to realize the optical path test; when the electrical performance needs to be tested, the cable core wire test clamp is only required to be connected with an insulation resistance tester, so that the insulation resistance and voltage resistance strength test and the sealing performance monitoring of the optical cable joint box 4 are realized;
the testing process comprises the following steps:
such as LMeasuring、LGinseng radix (Panax ginseng C.A. Meyer)The total length of a certain optical cable line is 139km, the communication is interrupted, and the total length is tested by a computer room LMeasuringAt 100.678Km, according to the line data, there are 20 passing roads, 10 passing rivers, 10 passing bridges and 50 joints, each error is about 1200 monitoring monuments 6 with 10cm, each error of monitoring monuments 6 is about 15cm, then the error of 100Km is:
(20+10+10+50×10+1200×15)＝900cm+18000cm＝9m+180m＝189m；
calculating to deduce that the fault point is positioned between the monitoring markstones 6 of 50# -51#, and searching for the adjacent known fiber length L according to the previous optical cable first-aid repair experienceb(the last-time first-aid repair point location data) is taken as a reference point, and the distance L from the actual fault point is calculatedaLocation. The method is characterized in that a reference point is selected to be important, the closer to a fault point, the more accurate the judgment is, but the reference point is often determined according to the data of the position of the line rush-repair personnel at the last time, sometimes the reference point is far away from the fault point, sometimes the reference point is 5Km, and even sometimes the reference point is beyond 10Km, and analysis and judgment are needed. The uncertainty of the position of the reference point inevitably affects the accuracy of the fault point; by adopting the fault positioning optical/electrical monitoring cable, the bidirectional fault test can be carried out at the monitoring end of the No. 50 or No. 51 monitoring markstone 6, and the fault point can be positioned in the range of 1Km for searching, so that 0.678m of the optical cable line correspondingly passes through 0.2 passing roads, 0.1 passing river, 0.1 passing bridge and 0 joint, and the error of each position is about 10 cm; 6 monitor monument stones 6, every monitor monument stone 6 error is about 15cm, and 0.678m following error is exactly:
(0.2+0.1+0.1×10+6×15)＝4cm+90cm＝0.04m+0.9m＝0.94m；
the error value has little influence on the identification of the fault point, and the smaller the error value is, the smaller the workload is, and the more accurate the fault point positioning is.
TABLE 1LMeasuring、LGinseng radix (Panax ginseng C.A. Meyer)Different error comparison table
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A fault positioning optical/electrical monitoring cable is characterized by comprising a female insulation sealing head (1), an optical/electrical cable (2) and a monitoring monument (6) pre-buried near an optical cable joint box (4);
a monitoring markstone matched steel pipe (5) is embedded in the top of the monitoring markstone (6), and the lower end of the female insulating sealing head (1) is clamped on the top of the monitoring markstone matched steel pipe (5) through a sealing element (3);
one end of the optical/electrical cable (2) is connected with the female insulation sealing head (1), and the other end of the optical/electrical cable sequentially penetrates through the monitoring markstone matching steel pipe (5) and the monitoring markstone (6) and is connected to the upper optical cable and the lower optical cable of the optical cable joint box (4);
the insulation sealing device also comprises a male insulation sealing head (16) matched with the female insulation sealing head (1); the male insulating sealing head (16) is connected with a test light/cable (17) connected with a tester.
2. Fault localization optical/electrical monitoring cable according to claim 1, characterized in that the optical/electrical cable (2) comprises 6 stranded cables, 2 cables and a solid filled core, wherein the cables are electrically connected with the reinforcing cores of the upper and lower optical cables and the metallic outer sheaths, respectively, in the cable closure (4); the optical cables in the optical/electrical cables (2) are respectively butted with fiber cores of the upper optical cable pair and the lower optical cable pair; the top end of the female insulation sealing head (1) is provided with a plurality of test terminals, each test terminal is connected with one optical cable or electric cable of the optical/electric cable (2), and color spectrum position number marking is carried out.
3. Fault localization optical/electrical monitoring cable according to claim 1, characterized in that the female insulating sealing head (1) is a plastic cup with a sealing cover; an insulating layer (9) is arranged outside the optical/electrical cable (2) and dispersed in the plastic cup; the plastic cup and the optical/electric cable (2) are filled with a filling agent, and the filling agent is cable core ointment (10).
4. A fault-locating optical/electrical monitoring cable according to claim 3, characterized in that the plastic cup and the optical/electrical cable (2) are sealed by means of a heat-shrink sleeve, which in turn is an outer PE sheath (15), an aluminium strip (14), an ointment layer (13), an inner PE sheath (12) and a water-blocking strip (11).
5. Fault localization optical/electrical monitoring cable according to claim 1, characterized in that the sealing element (3) is a tubular polyethylene heat shrink material, the inner wall of which is coated with a hot melt adhesive.
6. Fault localization optical/electrical monitoring cable according to claim 1, characterized in that the sealing element (3) is a mixture of glue, vulcanized rubber and paste encapsulation.
7. Fault localization optical/electrical monitoring cable according to claim 2, characterized by further comprising two water ingress monitoring modules (8); the water inlet monitoring module (8) is fixedly arranged at the bottom of the shell of the optical cable joint box (4) and is electrically connected with the two cables of the optical/electric cable (2).
8. The fault positioning optical/electrical monitoring cable according to claim 1, wherein the top of the monitoring monument mating steel tube (5) is in threaded fit with a monitoring monument screw cap (7).
9. Fault localization optical/electrical monitoring cable according to claim 1, characterized in that the optical/electrical cable (2) and the optical/electrical cable for testing (17) have an outer diameter of copper conductor not less than 0.7 mm; the outer diameter of the optical/electric cable (2) is 12mm-15mm, and the outer diameter of the optical cable is 3mm-6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110552275.6A CN113125126A (en) | 2021-05-20 | 2021-05-20 | Fault positioning photoelectric/electric monitoring cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110552275.6A CN113125126A (en) | 2021-05-20 | 2021-05-20 | Fault positioning photoelectric/electric monitoring cable |
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| CN113125126A true CN113125126A (en) | 2021-07-16 |
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| CN202110552275.6A Pending CN113125126A (en) | 2021-05-20 | 2021-05-20 | Fault positioning photoelectric/electric monitoring cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323471A (en) * | 2021-11-29 | 2022-04-12 | 江苏通鼎宽带有限公司 | Optical cable joint box sealing monitoring assembly, monitoring system and monitoring method |
-
2021
- 2021-05-20 CN CN202110552275.6A patent/CN113125126A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114323471A (en) * | 2021-11-29 | 2022-04-12 | 江苏通鼎宽带有限公司 | Optical cable joint box sealing monitoring assembly, monitoring system and monitoring method |
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