CN205845566U - Remotely monitoring and early warning Through ground wire - Google Patents
Remotely monitoring and early warning Through ground wire Download PDFInfo
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- CN205845566U CN205845566U CN201620569206.0U CN201620569206U CN205845566U CN 205845566 U CN205845566 U CN 205845566U CN 201620569206 U CN201620569206 U CN 201620569206U CN 205845566 U CN205845566 U CN 205845566U
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- ground wire
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Abstract
The utility model discloses a kind of remotely monitoring and early warning Through ground wire, it includes cable core and the metallic jacket being arranged at outside cable core, and described cable core is formed by some metallic conductors are the most stranded, is provided with monitoring sensor in cable core.Described monitoring sensor is piezoelectric transducer and Fibre Optical Sensor.Described piezoelectric transducer is positioned at the center of cable core, and metallic conductor is stranded in the periphery of this piezoelectric transducer；Described Fibre Optical Sensor is positioned at the periphery of cable core adjacent with metallic jacket inwall.Described piezoelectric transducer includes cable wire core, is adhesive with piezoelectric membrane on cable wire core, is coated with sheath and screen layer successively, is extruded with outer jacket on this screen layer outside described piezoelectric membrane.This utility model energy accurate measurements ground wire working condition, effectively prevents ground wire fracture damage, it is achieved that from ground wire post-rift report to the police to repair to take precautions against the conversion of early warning, be particularly well-suited to have in the railway combined shared wiring system of high reliability, high security requirement.
Description
Technical field
This utility model relates to the earth cable used in a kind of railway combined earthed system, and particularly relating to one can be remote
Range monitoring the Through ground wire of early warning.
Background technology
Railway run-through ground line system be by traction power supply return system along the line for track, power supply system, signaling system,
Communicate and other electronic informations, and bridge, platform, railway roadbed etc. need the device of ground connection to be connected by Through ground wire
Earthed system, form the isoelectric level body of a common ground system, it is to ensure railway operation safety, it is achieved train at a high speed,
Heavy duty, the key facility of signal of communication technology digital intelligent, be one of sophisticated technology product in technical field of rail traffic.
Railway run-through ground line is owing to ensure that full line wiring isoelectric level, and the potential difference between eliminating because of distinct device is drawn
The out-of-balance current risen, meets the requirement of giant ground system long-term good earth resistance value, it is achieved that to personnel and equipment
Effective protection.But under artificial and irresistible External Force Acting, it would still be possible to the disconnected of Through ground wire in grounding device can be caused
Split, if can not find in time and putting maintenance into practice can affect accurately controlling and information transmission letter of signal transmission system technical parameter
Number control reliability, leave hidden danger to the safety of high-speed railway.Find that Through ground wire Broken condition and running status are in time
Ensure basis and guarantee that the railway system is reliable, safe, connect especially with railway ballastless track, signaling system equipment complex
Ground, " four electricity " integrated extensively applying, the safety of earthed system is more and more important, and the effect of Through ground wire seems and more closes
Key.
But it is difficult to find after Through ground wire fracture, and after Through ground wire fracture, partial earthing point earth resistance can be caused
Bigger than normal, it is uneven that signal transmission system can produce earthing potential, and affects the accuracy of signal transmission system technical parameter, directly
Affect the safe operation of railway.Solving the Through ground wire the most frequently used technological means of broken string at present is in the copper hinge line of Through ground wire
Add the signal alarm line of one or two.Such as the national patent " high safety shield Through ground wire " of the applicant's application, patent
Number: 201120244011.6；Holding wire is reported to the police in the conduction state under normal circumstances, and display is normal, when Through ground wire is in external force
After the lower fracture of effect, its holding wire also can be in open-circuit condition, and warning device sends break alarm signal, but this alarming line is often
It is only capable of reflecting whether Through ground wire ruptures, it is impossible to determine breakpoint location." a kind of remotely monitoring break alarm is throughly for Chinese patent
Line ", the patent No.: the alarm unit in 201220385635.4 is then to be formed, when Through ground wire is subject to by two insulated single wires are stranded
During External Force Acting fracture, the mutual capacitance between two insulated single wires in this alarm unit changes, and monitoring device can root
Automatically calculate breakpoint location according to the mutual capacitance value of change and report to the police, facilitate the quickly location of maintainer and quickly repair
Again, whether this alarm unit with two insulated single wires can be distinguished and break, it is also possible to substantially determine the position of broken string.But
It is that the alarming line regardless of single covered wire or two covered wires all can only make warning reflection after Through ground wire ruptures, and can not
The real time status of monitoring Through ground wire, especially can not be monitored and controlled and cause Through ground wire major cause of failure pulling force big
Little variable condition.Along with the continuous speed-raising of railway, more and more higher to track stability, security requirement, it is possible to monitoring is the most pre-
Alert Through ground wire working condition is imperative.
Utility model content
For the above-mentioned deficiency existing for prior art, technical problem to be solved in the utility model is to provide a kind of energy
Accurate measurements ground wire working condition, effectively prevents the long-range monitoring and early warning Through ground wire of ground wire fracture damage.
In order to solve above-mentioned technical problem, long-range monitoring and early warning Through ground wire of the present utility model, including cable core and setting
Metallic jacket outside cable core, described cable core is formed by some metallic conductors are the most stranded, is provided with monitoring in cable core
Sensor.
In said structure, owing to being provided with monitoring sensor in cable core, monitoring sensor can pass through delicately in perception
The practical working situation of logical ground wire, when Through ground wire is become big by accidental mechanical effect or ground wire axial tensile force, diminishes, prison
These mechanical signals can be converted to signal of telecommunication transmission and to monitoring device and send early warning signal by control sensor, allow one in time
Intervene and process, becoming traditional break treat with afterwards into preventing in advance, thus it is safe and reliable to ensure that Through ground wire is in all the time
Working condition, effectively ensure train operation.Also due to be provided with monitoring sensor in cable core, this just can be according to passing through
The working environment of logical ground wire and work requirements, to operational factors such as the use temperature of Through ground wire, pressure, bending, STRESS VARIATION
Monitor in time, both can effectively prevent the generation of the damage accidents such as Through ground wire broken string, it is also possible to Through ground wire is run
State and working life carry out assessment accurately and timely, enable people to remove a hidden danger in time, it is to avoid the faults such as broken string occur.
Preferred implementation of the present utility model, described monitoring sensor is piezoelectric transducer and Fibre Optical Sensor.Described
Piezoelectric transducer is positioned at the center of cable core, and metallic conductor is stranded in the periphery of this piezoelectric transducer；Described Fibre Optical Sensor
It is positioned at the periphery of cable core adjacent with metallic jacket inwall.In this structure, piezoelectric transducer and Fibre Optical Sensor play the most excellent
Gesture, and performance complement, more can effectively prevent and avoid accident to occur.Piezoelectric transducer reflect in time Through ground wire bending,
Stretching and the change of compression stress, the Novel presentation of accurate perception Through ground wire；And Fibre Optical Sensor not only electromagnetism interference
Can be superior, corrosion-resistant susceptiveness is high, and can accurately measure stress relaxation, STRESS VARIATION and displacement and temperature multiple use operation
Parameter.
Preferred implementation of the present utility model, described piezoelectric transducer includes cable wire core, is adhesive with pressure on cable wire core
Conductive film, is coated with sheath and screen layer outside described piezoelectric membrane successively, is extruded with outer jacket on this screen layer.Stretching
The accident increase of power is Through ground wire major cause of failure, owing to the increase of unexpected axial tensile force is often that Through ground wire meets with
Be damaged major cause of failure, and the copper material hot strength with excellent conductive performance is relatively low, the steel in this structure
Cable core greatly strengthen the tension mechanical strength of Through ground wire, compensate for the deficiency that copper cable core mechanical strength is relatively weak, makes
Through ground wire has more preferable mechanical performance.Using piezoelectric membrane as the piezoelectric device of piezoelectric transducer, piezoelectric membrane is not only
Frivolous, soft, sensitivity is fabulous, and has the strongest mechanical tenacity, directly against be attached on steel wire will not to Through ground wire and
Bending and the wiring of wire-core impact, and are particularly adapted to the working environment of Through ground wire.
Further embodiment of the present utility model, described piezoelectric membrane is gluing on cable wire core by adhesive layer, piezoelectricity
Thin film is arranged along cable wire core length direction interval.The most spaced piezoelectric membrane can reflect different section throughly
The tension variation of line, and send early warning signal for different sections；When cable wire core is stretched compression or bending with Through ground wire,
The piezoelectric membrane adhered on cable wire core is produced corresponding electric charge by the effect of power, makes metataxis be converted to the signal of telecommunication and is transferred to
Monitoring device generation indication signal.
Preferred implementation of the present utility model, described cable wire core is individual wire or steel tendon；Described screen layer is plating
Stannum silk braid.Use steel wire or steel tendon that Through ground wire can be made both to have had fabulous tensile property, there is again good flexibility.
The shielding construction of tincopper fuse wire braided armor has the two-fold advantage that shield effectiveness is good, flexible.Screen layer outside piezoelectric membrane, energy
It is prevented effectively from the external electromagnetic field interference to piezoelectric signal, it is ensured that the acquisition accurately and reliably of piezoelectric signal.
This utility model preferred implementation, described Fibre Optical Sensor is sensing type Fibre Optical Sensor.Described fiber optics passes
Sensor is embedded in optical fiber landfill glue.Optical fiber in sensing type sensor has the transmission of the sensitivity to measured signal and signal concurrently and makees
With, " biography " and " sense " of signal is united two into one, is more applicable for the monitoring and warning of various parameters in Through ground wire.Fibre Optical Sensor
Device be embedded in optical fiber landfill glue can more accurately test metallic conductor and the stretching of metal outer jacket in Through ground wire, compression and
STRESS VARIATION caused by bending, it is possible to play much sooner, early warning effect accurately.
This utility model preferred implementation, described metallic jacket is copper alloy sheath, wraps on this metallic jacket
It is covered with corrosion resistant layer.Copper alloy sheath not only has good electric conductivity, and has preferable rotproofness and Local Adaptation.?
Metallic jacket is provided with corrosion resistant layer, can be effectively improved Through ground wire adaptability in various soil environments, has preferably
Corrosion resistant, environmental-protecting performance.
Accompanying drawing explanation
Monitoring and early warning Through ground wire long-range to this utility model with detailed description of the invention is made furtherly below in conjunction with the accompanying drawings
Bright.
Fig. 1 is the cross section structure schematic diagram of this utility model long-range monitoring and early warning a kind of detailed description of the invention of Through ground wire；
Fig. 2 is the piezoelectric transducer structure for amplifying schematic diagram in Fig. 1 illustrated embodiment；
Fig. 3 is the cross section structure signal of this utility model long-range monitoring and early warning another detailed description of the invention of Through ground wire
Figure；
Fig. 4 is the cross section structure signal of this utility model long-range monitoring and early warning another detailed description of the invention of Through ground wire
Figure；
Fig. 5 is the cross section structure signal of this utility model the 4th kind of detailed description of the invention of long-range monitoring and early warning Through ground wire
Figure；
Fig. 6 is the cross section structure signal of this utility model the 5th kind of detailed description of the invention of long-range monitoring and early warning Through ground wire
Figure；
In figure, 1 cable core, 2 metallic conductors, 3 piezoelectric transducers, 31 cable wire cores, 32 adhesive layers, 33 piezoelectricity
Outside thin film, 34 sheaths, 35 screen layers, 36 outer jackets, 4 Fibre Optical Sensors, 41 optical fiber landfill glue, 5 metals
Sheath, 6 corrosion resistant layer.
Detailed description of the invention
Long-range monitoring and early warning Through ground wire as shown in Figure 1, this Through ground wire includes 17 copper metallic conductors 2, gold
Belong to conductor 2 to be twisted by layer or concentric stranding is in forming cable core 1 together, cable core 1 is enclosed with metallic jacket 5, outside this metal
Sheath 5 is copper alloy sheath, and the material of copper alloy sheath is ormolu.Metallic jacket 5 is also wrapped on corrosion resistant layer 6,
The material of this corrosion resistant layer 6 is conductive plastics.
Piezoelectric transducer 3 and Fibre Optical Sensor 4 it is provided with, this piezoelectric transducer 3 and Fibre Optical Sensor 4 structure in cable core 1
Become monitoring sensor.The piezoelectric transducer 3 of monitoring sensor is positioned at the center of cable core 1, and metallic conductor 2 is the most stranded in piezoelectricity
The periphery of sensor 4；The Fibre Optical Sensor 4 of monitoring sensor be positioned at cable core 1 peripheral position and with the inwall of metallic jacket 5
Adjacent.Fibre Optical Sensor 4 is embedded in optical fiber landfill glue 41, and optical fiber landfill glue 41 is by the metallic conductor of Fibre Optical Sensor 4 periphery
2, metallic jacket 5 and Fibre Optical Sensor are connected and fixed on one.Fibre Optical Sensor 4 uses sensing type Fibre Optical Sensor, optical fiber
Sensor is along the axially consecutive layout of ground wire.Use condition according to Through ground wire and design requirement, can select different types of
Fibre Optical Sensor is with relevant parameters such as prison geodesic temperature, stress, displacements, to ensure the safe and reliable fortune of Through ground wire system
OK.
As in figure 2 it is shown, the piezoelectric transducer 3 in cable core 1 includes cable wire core 31, by adhesive layer 32 on cable wire core 31
It is pasted with piezoelectric membrane 33, is i.e. coated between piezoelectric membrane 33 and the cable wire core 31 of cable wire core 31 periphery and is provided with adhesive layer 32.
Piezoelectric membrane 33 is made up of copolymer polyvinylidene fluoride (PVDF) material, and it has the highest piezoelectric property and splendid soft
Pliable, cable wire core 31 both individual wire, it is also possible to being that some steel wires are stranded forms.Piezoelectric membrane 33 is along the length of cable wire core
Direction has been positioned apart from multi-disc piezoelectric membrane, with the stretching of the different ground wire section of monitoring, compress, the mechanical stress such as bending.Respectively
Sheet piezoelectric membrane all electrically connects with monitoring device, is externally provided with inner sheath 34 at piezoelectric membrane 33.Inner sheath 34 is provided with shielding
Layer 35, this screen layer 35 is formed by tinned copper wire braiding, is coated with outer jacket 36 on screen layer 35.Inner sheath 34 and outer jacket
36 all with polyethylene as material.
Long-range monitoring and early warning Through ground wire shown in Fig. 3, the cable core 1 of this Through ground wire includes 18 copper metals and leads
Body 2,18 metallic conductors 2 are the most stranded in the periphery of piezoelectric transducer 3 in the way of layer strand or concentric strand, piezoelectric transducer 3
Constitute monitoring sensor.The structure of piezoelectric transducer 3 is same as the previously described embodiments.It is coated with outside metal in the periphery of cable core 1 and protects
Set 5, this metallic jacket 5, with aluminium alloy as material, is coated with conductivity ceramics in the periphery of metallic jacket 5 and defines corrosion resistant
Layer 6.The structure of piezoelectric transducer 3 is identical with structure shown in Fig. 2 in above-described embodiment；Piezoelectric transducer 3 is positioned at the center of cable core 1
Position.
In an embodiment shown in fig. 4 in addition to the radical of the metallic conductor 2 of cable core 1 is unlike the embodiments above, other are equal
Identical.Stranded in the periphery of piezoelectric transducer 3 in this embodiment have 6 metallic conductors 2, and metallic conductor 2 is also with copper as material.
Long-range monitoring and early warning Through ground wire shown in Fig. 5, the monitoring sensor of this Through ground wire only includes a Fibre Optical Sensor
Device 4, cable core 1 includes 18 copper metallic conductors 2, and Fibre Optical Sensor 4 is positioned at the center of cable core 1,18 copper gold
Belonging to conductor 2 stranded in the periphery of Fibre Optical Sensor 4, Fibre Optical Sensor 4 is embedded in optical fiber landfill glue 41, and is filled by optical fiber
Together with glue 41 is mutually connected with the metallic conductor 2 of its periphery.Optical fiber landfill glue 41 is the commercially available glue such as silica gel, and Fibre Optical Sensor 4 is still
Use sensing type Fibre Optical Sensor.The copper metallic jacket of alloy 5 it is coated with, on metallic jacket 5 in the periphery of cable core 1
The corrosion resistant layer 6 being coated with conductivity ceramics and formed.
The radical of the metallic conductor 2 that the difference is that only cable core 1 of the embodiment shown in Fig. 6 and Fig. 5 embodiment,
In the present embodiment, by optical fiber landfill, glue 41 is stranded is fixed with 6 metallic conductors 2 in the periphery of Fibre Optical Sensor 4.
Claims (10)
1. a long-range monitoring and early warning Through ground wire, including cable core (1) be arranged at cable core (1) metallic jacket (5) outward, its
It is characterised by: described cable core (1) is formed by some metallic conductors (2) are the most stranded, this cable core (1) is provided with monitoring and passes
Sensor.
Long-range monitoring and early warning Through ground wire the most according to claim 1, it is characterised in that: described monitoring sensor is piezoelectricity
Sensor (3) and Fibre Optical Sensor (4).
Long-range monitoring and early warning Through ground wire the most according to claim 2, it is characterised in that: described piezoelectric transducer (3) position
In the center of cable core (1), metallic conductor (2) is stranded in the periphery of this piezoelectric transducer (3)；Described Fibre Optical Sensor (4)
It is positioned at the periphery of cable core (1) adjacent with metallic jacket (5) inwall.
Long-range monitoring and early warning Through ground wire the most according to claim 1, it is characterised in that: described monitoring sensor is piezoelectricity
Sensor (3), this piezoelectric transducer (3) is positioned at the center of described cable core (1).
5. according to the long-range monitoring and early warning Through ground wire described in claim 2,3 or 4, it is characterised in that: described piezoelectric transducer
(3) include cable wire core (31), cable wire core (31) is adhesive with piezoelectric membrane (33), wrap the most successively at described piezoelectric membrane (33)
It is covered with sheath (34) and screen layer (35), this screen layer (35) is extruded with outer jacket (36).
Long-range monitoring and early warning Through ground wire the most according to claim 5, it is characterised in that: described piezoelectric membrane (33) passes through
Adhesive layer (32) is gluing on cable wire core (31)；This piezoelectric membrane (33) is arranged along cable wire core (31) length direction interval.
Long-range monitoring and early warning Through ground wire the most according to claim 5, it is characterised in that: described cable wire core (31) is single
Steel wire or steel tendon；Described screen layer (35) is tincopper fuse wire braided armor.
8. according to the long-range monitoring and early warning Through ground wire described in Claims 2 or 3, it is characterised in that: described Fibre Optical Sensor (4)
For sensing type Fibre Optical Sensor.
Long-range monitoring and early warning Through ground wire the most according to claim 8, it is characterised in that: described infrared fibre-optic sensor (4)
It is embedded in optical fiber landfill glue (41).
Long-range monitoring and early warning Through ground wire the most according to claim 1, it is characterised in that: described metallic jacket (5) is
Copper alloy sheath, is coated with corrosion resistant layer (6) on this metallic jacket (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620569206.0U CN205845566U (en) | 2016-06-14 | 2016-06-14 | Remotely monitoring and early warning Through ground wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620569206.0U CN205845566U (en) | 2016-06-14 | 2016-06-14 | Remotely monitoring and early warning Through ground wire |
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| Publication Number | Publication Date |
|---|---|
| CN205845566U true CN205845566U (en) | 2016-12-28 |
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| CN201620569206.0U Active CN205845566U (en) | 2016-06-14 | 2016-06-14 | Remotely monitoring and early warning Through ground wire |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105895244A (en) * | 2016-06-14 | 2016-08-24 | 江苏东强股份有限公司 | Remote monitoring early-warning through ground wire |
| CN108589353A (en) * | 2018-04-08 | 2018-09-28 | 烽火通信科技股份有限公司 | A kind of Fibre Optical Sensor cable wire and its manufacturing method |
-
2016
- 2016-06-14 CN CN201620569206.0U patent/CN205845566U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105895244A (en) * | 2016-06-14 | 2016-08-24 | 江苏东强股份有限公司 | Remote monitoring early-warning through ground wire |
| CN105895244B (en) * | 2016-06-14 | 2018-08-07 | 江苏东强股份有限公司 | Remote monitoring early warning Through ground wire |
| CN108589353A (en) * | 2018-04-08 | 2018-09-28 | 烽火通信科技股份有限公司 | A kind of Fibre Optical Sensor cable wire and its manufacturing method |
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