CN206670827U - A kind of compound Metro Cable on-line monitoring system of optical fiber - Google Patents
A kind of compound Metro Cable on-line monitoring system of optical fiber Download PDFInfo
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- CN206670827U CN206670827U CN201720458036.3U CN201720458036U CN206670827U CN 206670827 U CN206670827 U CN 206670827U CN 201720458036 U CN201720458036 U CN 201720458036U CN 206670827 U CN206670827 U CN 206670827U
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Abstract
It the utility model is related to a kind of compound Metro Cable on-line monitoring system of optical fiber; including single-core cable, the No.1 optical fiber being arranged on outside single-core cable epidermis and No. two optical fiber while the photoelectric conversion device that is connected with No.1 optical fiber and No. two optical fiber; and the computer system being connected with photoelectric conversion device; at least two tubules are provided with outside single-core cable epidermis; with single-core cable center symmetric setting; No.1 optical fiber and No. two optical fiber are individually positioned in tubule, and tubule is installed in the protective case of single-core cable.Single-core cable is laid using triangle manner, and No.1 optical fiber, No. two optical fiber realize the function that a set of detecting system monitors a plurality of Metro Cable by being bent in cable head-end and end with certain radius of curvature.The temperature measuring and stress for realizing Metro Cable each point detect, and improve the uniformity coefficient and accuracy of measurement temperature and stress.The service life of optical fiber is improved simultaneously.Foundation is realized to offers such as Metro Cable fault detect, burglar alarms.
Description
Technical field
The utility model belongs to field of cables, is related to a kind of compound Metro Cable on-line monitoring system of optical fiber.
Background technology
At this stage, subway is because its reliability is high, carrying capacity is strong, it is all to transport substantial amounts of crowd etc. in the very short time
More advantages just develop rapidly, and because subway operates in underground completely, how over the ground the illumination of train driving and platform is required for electricity consumption,
Iron system is stable, reliably power supply, and the very first time determines that abort situation overhaul with regard to aobvious when supply line breaks down
Obtain particularly important.During subway power supply, mainly using 35kV, 10kV ac cable.Above-mentioned cable is mainly placed in cable
Ditch or using direct buried, its most immediate cause to break down in the process of running is that insulation reduces and breakdown, and is caused
The factor of insulation breakdown mainly has：External force damage, running overload, ambient temperature effect and cogging problem, electricity from the point of view of summarizing
The reason for cable breaks down mainly is influenceed by external force and temperature,
At this stage, Cable fault examination is mainly temperature detection and burglar alarm.It is widely used in temperature detection
Technology has thermocouple temperature measurement and optical fiber temperature-measurement.The principle of thermocouple temperature measurement be thermocouple resistance can with the change of temperature and
Change, is converted to electric signal, and measure with this by the signal of temperature.Thermocouple temperature measurement is simple in construction, cheap, technology
Maturation, but because thermocouple can only carry out point type thermometric, the on-line monitoring of trip temperature can not be entered to whole piece cable run, so tool
There is certain limitation.Optical fiber have cost it is cheap, not by electromagnetic interference, small in volume, measurement accuracy is high, is easy to lay
The advantages that, distributed optical fiber temperature measurement technology achieves that the circuit of logarithm kilometer carries out long term monitoring, existing rank using an optical fiber
Section optical fiber temperature-measurement cable rests on laboratory stage more, and practical application is less.Existing optical fiber temperature-measurement cable is mainly to cable
Joint is detected, and by fibre optic installations in Exterior cable.It is primarily present problems with：
(1) Metro Cable temperature raises main stand under load flow effect, and current-carrying capacity rise can cause the temperature rise of cable many places,
Thermometric only is carried out to cable connector part and potential safety hazard be present；
(2) Metro Cable laying environment is complicated, and fibre optic installations easily cause to damage in Exterior cable to optical fiber physical arrangement；
(3) Metro Cable laying groove has a plurality of cable more, and fibre optic installations can be by other in Exterior cable measured temperature
Cable temperature rise influences；
(4) Metro Cable bends, then measurement accuracy can be caused to decline；
(5) thermometric, anti-theft alarm function can not be realized simultaneously.
Therefore, it is necessary to which a kind of new technical scheme solves the above problems.
Utility model content
In order to solve the above-mentioned technical problem, the utility model proposes a kind of compound Metro Cable on-line monitoring system of optical fiber
And monitoring method.
A kind of compound Metro Cable on-line monitoring system of optical fiber, it is characterised in that including single-core cable, be arranged on single electricity
No.1 optical fiber and No. two optical fiber outside cable epidermis while the photoelectric conversion device being connected with No.1 optical fiber and No. two optical fiber, with
And the computer system being connected with photoelectric conversion device, at least two tubules are provided with outside the single-core cable epidermis, with list
Core cable center is symmetrical arranged, and No.1 optical fiber and No. two optical fiber are individually positioned in tubule, and tubule is installed on the guarantor of single-core cable
In sheath.
In a kind of above-mentioned compound Metro Cable on-line monitoring system of optical fiber, described photoelectric conversion device is installed on described
The initial segment of single-core cable, including：No.1 optical-electrical converter, No. two opto-electronic conversions and alarm, described No.1 opto-electronic conversion
Device is connected with described No.1 optical fiber, can be launched optical signal and be received the scattered light signal of setting, and described No. two photoelectricity turn
Parallel operation is connected with No. two described optical fiber, can be launched optical signal and be received the scattered light signal of setting；Described No.1 photoelectricity
Converter electrically connects with described alarm, realizes that cable temperature rise is alarmed by the way that electric signal is delivered into described alarm；Institute
The No.1 optical-electrical converter stated is electrically connected with No. two described optical-electrical converters, and temperature information can be delivered to No. two described light
Electric transducer；No. two described optical-electrical converters electrically connect with described alarm, by the way that electric signal to be delivered to described report
Alert device realizes that cable stress is alarmed.
In a kind of above-mentioned compound Metro Cable on-line monitoring system of optical fiber, described single-core cable takes triangle to lay
Mode, single-core cable include：Core, internal shield, megohmite insulant, external shielding layer, protective case, corrosion-resistant coating；Core material is
Copper cash or aluminum steel；Described megohmite insulant is surrounded on outside described core and described internal shield；Described internal shield
The core surface is surrounded on, with the core equipotential, prevents from that local put occurs between the core and the megohmite insulant
Electricity；The external shielding layer is surrounded on megohmite insulant surface, prevents from producing shelf depreciation between megohmite insulant and protective case, described
Protective case is surrounded on external shielding layer surface；At least two tubules are installed on inside protective case, and the thickness of protective case is more than tubule
Diameter, No.1 optical fiber, No. two optical fiber are respectively placed in inside two tubules.
In a kind of above-mentioned compound Metro Cable on-line monitoring system of optical fiber, described No.1 optical fiber and No. two described light
Fine length may not exceed 40 kms, surveys every section of single-core cable length and must not exceed 10 kms, in described single-core cable end,
Described No.1 optical fiber is bent with No. two described optical fiber with five to six centimetres of radius of curvature, and passes through next single
Tubule on cable.The on-line monitoring of the single-core cable described in 4 can be realized simultaneously.
Therefore, the utility model has the following advantages that：The temperature measuring and stress for realizing Metro Cable each point detect, and adopt
External interference is eliminated with built-in fiber, optical fiber is installed on inside Metro Cable, improves the uniform of measurement temperature and stress
Degree and accuracy.The service life of optical fiber is improved simultaneously.Metro Cable fault detect, burglar alarm, tunnel smog are visited
Offer is provided and realizes foundation.
Brief description of the drawings
Fig. 1 is external structure schematic diagram of the present utility model.
Fig. 2 is sectional view of the present utility model.
Fig. 3 is system of laying sectional view of the present utility model.
Fig. 4 is fibre optic installations schematic diagram of the present utility model.
Fig. 5 is that the utility model arranges tunnel schematic diagram.
Embodiment
Understand for the ease of those of ordinary skill in the art and implement the utility model, below in conjunction with the accompanying drawings and embodiment pair
The utility model is described in further detail, it will be appreciated that implementation example described herein is merely to illustrate and explained this
Utility model, it is not used to limit the utility model.
See Fig. 1, a kind of compound Metro Cable on-line monitoring system of optical fiber provided by the utility model, including single-core cable
1st, 2, No. two optical fiber 3, photoelectric conversion devices 4 of No.1 optical fiber.Described photoelectric conversion device 4 is installed on the single-core cable 1
The initial segment, including：5, No. two optical-electrical converters 6 of No.1 optical-electrical converter and alarm 7, described No.1 optical-electrical converter 5 with
Described No.1 optical fiber 2 connects, and can launch optical signal and receive the scattered light signal of setting, described No. two optical-electrical converters
6 are connected with No. two described optical fiber 3, can launch optical signal and receive the scattered light signal of setting.Described No.1 photoelectricity turns
Parallel operation 5 electrically connects with described alarm 7, realizes that cable temperature rise is alarmed by the way that electric signal is delivered into described alarm 7；Institute
The No.1 optical-electrical converter 5 stated is electrically connected with No. two described optical-electrical converters 6, and temperature information can be delivered to described No. two
Optical-electrical converter.No. two described optical-electrical converters 6 electrically connect with described alarm 7, described by the way that electric signal is delivered to
Alarm 7 realize cable stress alarm.
See Fig. 2, described single-core cable 1 includes using triangle system of laying, described single-core cable 1：Line
Core 11, internal shield 12, megohmite insulant 13, external shielding layer 14, protective case 15, corrosion-resistant coating 16, tubule 8.Described core 11
Material is copper cash or aluminum steel, and electric conductivity is good.The described material of megohmite insulant 13 is crosslinked polyethylene, and insulating properties are good,
It is surrounded on outside described core 11 and described internal shield 12.Described internal shield 12 is made up of semi-conducting material, ring
The surface of core 11 is around in, with the equipotential of core 11, prevents from occurring between the core 11 and the megohmite insulant 13
Shelf depreciation.The external shielding layer 14 is made up of semi-conducting material, is surrounded on the surface of megohmite insulant 13, is prevented megohmite insulant
Shelf depreciation is produced between 13 and protective case 15, described protective case 15 uses not halogen crosslinked polyethylene fire proofing.Institute
The tubule 8 stated is installed on inside described sheath 15, and described 2, No. two optical fiber 3 of No.1 optical fiber are positioned in described tubule 8
Portion.
See Fig. 3, described single-core cable 1 is using triangle system of laying, the single-core cable center described in three
It is wired to equilateral triangle.And three described single-core cable epidermises are brought into close contact.
See Fig. 4, to ensure measurement accuracy, described No.1 optical fiber 2 may not exceed 40 with No. two described length of optical fiber 3
Km, survey every section of length of single-core cable 1 and must not exceed 10 kms, in the described end of single-core cable 1, described No.1 optical fiber
2 are bent with No. two described optical fiber 3 with five to six centimetres of radius of curvature, and are passed through thin on next single-core cable 1
Pipe 8.The on-line monitoring of the single-core cable 1 described in 4 can be realized simultaneously.See Fig. 5, described smoke alarm 9 is every certain
Distance is installed at the top of cable tunnel, and specific mounting distance need to determine according to actual conditions.
When in use, the temperature measuring and stress for realizing Metro Cable each point detect the present embodiment, using built-in fiber
Eliminate external interference, optical fiber be installed on inside Metro Cable, improve the uniformity coefficient of measurement temperature and stress with it is accurate
Property.The service life of optical fiber is improved simultaneously.Realization is provided to Metro Cable fault detect, burglar alarm, tunnel smog detection
Foundation.
Although this specification more used single-core cable 1,2, No. two optical fiber 3 of No.1 optical fiber, photoelectric conversion device 4,
The terms such as No.1 optical-electrical converter 5, No. two optical-electrical converters 6, alarm 7, smoke alarms, but be not precluded from using other arts
The possibility of language.Using these terms just for the sake of more easily describing essence of the present utility model, it is construed as appointing
A kind of what additional limitation is all disagreed with the utility model spirit.
It should be appreciated that the part that this specification does not elaborate belongs to prior art.
It should be appreciated that the above-mentioned description for preferred embodiment is more detailed, therefore can not be considered to this
The limitation of utility model patent protection domain, one of ordinary skill in the art are not departing under enlightenment of the present utility model
Under the ambit that the utility model claims are protected, replacement or deformation can also be made, is each fallen within of the present utility model
Within protection domain, the scope of the present utility model that is claimed should be determined by the appended claims.
Claims (4)
1. a kind of compound Metro Cable on-line monitoring system of optical fiber, it is characterised in that including single-core cable, be arranged on single-core cable
No.1 optical fiber and No. two optical fiber outside epidermis while the photoelectric conversion device being connected with No.1 optical fiber and No. two optical fiber, and
The computer system being connected with photoelectric conversion device, at least two tubules is provided with outside the single-core cable epidermis, with single
Cable center is symmetrical arranged, and No.1 optical fiber and No. two optical fiber are individually positioned in tubule, and tubule is installed on the protection of single-core cable
In set.
A kind of 2. compound Metro Cable on-line monitoring system of optical fiber according to claim 1, it is characterised in that：Described light
Electrical switching device is installed on the initial segment of the single-core cable, including：No.1 optical-electrical converter, No. two opto-electronic conversions and alarm
Device, described No.1 optical-electrical converter are connected with described No.1 optical fiber, can be launched optical signal and be received the scattering light of setting
Signal, described No. two optical-electrical converters are connected with No. two described optical fiber, can be launched optical signal and be received the scattering of setting
Optical signal；Described No.1 optical-electrical converter electrically connects with described alarm, by the way that electric signal to be delivered to described alarm
Device realizes that cable temperature rise is alarmed；Described No.1 optical-electrical converter electrically connects with No. two described optical-electrical converters, can be by temperature
Information conveyance is to No. two described optical-electrical converters；No. two described optical-electrical converters electrically connect with described alarm, pass through
Electric signal is delivered to described alarm and realizes that cable stress is alarmed.
A kind of 3. compound Metro Cable on-line monitoring system of optical fiber according to claim 1, it is characterised in that described list
Core cable takes triangle system of laying, and single-core cable includes：Core, internal shield, megohmite insulant, external shielding layer, protective case,
Corrosion-resistant coating；Core material is copper cash or aluminum steel；Described megohmite insulant is surrounded on described core and described internal shield
It is outside；Described internal shield is surrounded on the core surface, with the core equipotential, prevents the core and the insulation
Shelf depreciation occurs between material；The external shielding layer is surrounded on megohmite insulant surface, prevents between megohmite insulant and protective case
Shelf depreciation is produced, described protective case is surrounded on external shielding layer surface；At least two tubules are installed on inside protective case, protection
The thickness of set is more than the diameter of tubule, and No.1 optical fiber, No. two optical fiber are respectively placed in inside two tubules.
A kind of 4. compound Metro Cable on-line monitoring system of optical fiber according to claim 3, it is characterised in that：Described one
Number optical fiber may not exceed 40 kms with No. two described fiber lengths, surveys every section of single-core cable length and must not exceed 10 kms,
In described single-core cable end, described No.1 optical fiber is carried out with No. two described optical fiber with five to six centimetres of radius of curvature
Bending, and the tubule on next single-core cable is passed through, the on-line monitoring of the single-core cable described in 4 can be realized simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720458036.3U CN206670827U (en) | 2017-04-26 | 2017-04-26 | A kind of compound Metro Cable on-line monitoring system of optical fiber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720458036.3U CN206670827U (en) | 2017-04-26 | 2017-04-26 | A kind of compound Metro Cable on-line monitoring system of optical fiber |
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| CN206670827U true CN206670827U (en) | 2017-11-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106959173A (en) * | 2017-04-26 | 2017-07-18 | 武汉大学 | A kind of optical fiber is combined Metro Cable on-line monitoring system and monitoring method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106959173A (en) * | 2017-04-26 | 2017-07-18 | 武汉大学 | A kind of optical fiber is combined Metro Cable on-line monitoring system and monitoring method |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211022 Address after: No. R29, area A7, 5th floor, ovu chuangkexing south station, phase I business center, No. 16 yezhihu West Road, Hongshan District, Wuhan City, Hubei Province, 430000 (chuangkexing incubator) Patentee after: Wuhan Luojia Tongchuang Technology Co.,Ltd. Address before: 430074 pioneering building in Wuhan University Science and Technology Park, Donghu Development Zone, Wuhan City, Hubei Province Patentee before: Assets Management Investment Management Co., Ltd. of Wuhan University Effective date of registration: 20211022 Address after: 430074 pioneering building in Wuhan University Science and Technology Park, Donghu Development Zone, Wuhan City, Hubei Province Patentee after: Assets Management Investment Management Co., Ltd. of Wuhan University Address before: 430072 Hubei Province, Wuhan city Wuchang District of Wuhan University Luojiashan Patentee before: WUHAN University |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211130 Address after: 230601 floor 3, Hefei Wuda Research Institute, building B, No. 11, Yanglin Road, high tech Zone, Hefei, Anhui Province Patentee after: Hefei Luojia Innovation Research Institute Co.,Ltd. Address before: No. R29, area A7, 5th floor, ovu chuangkexing south station, phase I business center, No. 16 yezhihu West Road, Hongshan District, Wuhan City, Hubei Province, 430000 (chuangkexing incubator) Patentee before: Wuhan Luojia Tongchuang Technology Co.,Ltd. |