CN104217547A - Directly-buried pipeline safety prewarning system - Google Patents
Directly-buried pipeline safety prewarning system Download PDFInfo
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- CN104217547A CN104217547A CN201410399721.4A CN201410399721A CN104217547A CN 104217547 A CN104217547 A CN 104217547A CN 201410399721 A CN201410399721 A CN 201410399721A CN 104217547 A CN104217547 A CN 104217547A
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Abstract
The invention provides a directly-buried pipeline safety prewarning system and is applied to the technical field of pipeline safety monitoring. The directly-buried pipeline safety prewarning system comprises an optical fiber, an optical time domain reflectometer, an alarm and a control processor, the optical fiber is laid along a directly-buried pipeline and laid in a set area around the directly-buried pipeline, the optical time domain reflectometer is used for sending testing optical signals to the optical fiber, detecting whether the optical fiber breaks or not and positioning an optical fiber breaking point, the alarm is connected with the control processor, and the control processor is used for acquiring detecting result about whether the optical fiber breaks or not and positioning result of the optical fiber breaking point through the optical time domain reflectometer, determining that damage risk exists in the directly-buried pipeline, controlling the alarm to alarm and determining specific position where the damage risk exists in the directly-buried pipeline when the optical fiber breaks. By the directly-buried pipeline safety prewarning system, whether destructive external force exists around the directly-buried pipeline can be predicted sensitively so as to give an alarm to timely stop the destructive external force, probability that the directly-buried pipeline is damaged by the external force is lowered effectively, and safety of the directly-buried pipeline is guaranteed.
Description
Technical field
The present invention relates to pipe-line safety monitoring technology field, particularly, relate to a kind of direct-burried pipeline safety pre-warning system.
Background technology
In recent years, Transfomer Substation Reconstruction and various urban construction are being carried out in nationwide, and due to the propelling of urbanization and 10kV line cord, communication cable and water, electricity, warm, oil, gas transformation increasing year by year, its path increases year by year.But because the phenomenons such as marking pile subsides lack, stealing, barbarous construction often occur, increase the probability of direct-buried cable, optical cable and the damage of various Management of Pipeline Mechanical Equipment.
Taking cable as example, consult the relevant account data of net Dongming County, Shandong electric company of state by on-site investigation and case, the various faults of power cable that occur between Dongming County 35～10kV high voltage power cable June 1 year June in 2010 have been carried out to survey, wherein cable quality defect 1.4%, cable termination fault 19.5%, outside destroy account for 79.1% of total number of accident, and cable machinery damage is the main cause that causes cable fault.
Existing management is only to strengthen management by codes such as specification direct-burried construction reference, marking pile maintenance, line inspections, but be difficult to ensure direct-buried cable, optical cable, the construction of water power caliduct is very qualified, marking pile is perfectly safe, track walker keeps a close safeguard for 24 hours, around without wild without quite construction and cross-operation, operating personnel zero slip up, without accident generations such as thefts.
Summary of the invention
The fundamental purpose of the embodiment of the present invention is to provide a kind of direct-burried pipeline safety pre-warning system, and this system kind can find that bad risk of direct-buried pipe line loss resistance external force continuation in time destroy in time, is conducive to ensure the safety of direct-burried pipeline, reduces unnecessary loss.
To achieve these goals, the embodiment of the present invention provides a kind of direct-burried pipeline safety pre-warning system, comprising:
Optical fiber, along direct-buried pipe wire routing, and is laid in described direct-burried pipeline setting regions around;
Whether optical time domain reflectometer, connects described optical fiber, for sending test light signal to described optical fiber, detect described optical fiber and rupture, and fibercuts point is positioned;
Alarm, connects control processor;
Control processor, connect described optical time domain reflectometer, for obtaining described optical time domain reflectometer, whether described optical fiber be there is to the testing result of fracture and the positioning result to fibercuts point, in the time there is fracture in optical fiber, determine that described direct-burried pipeline exists damage risk, control described alarm and report to the police, and determine that according to the positioning result of fibercuts point described direct-burried pipeline exists the particular location that damages risk.
By means of technique scheme, the present invention will be laid in around direct-burried pipeline by the optical fiber that external force easily fractures, determine the crack conditions of optical fiber by optical time domain reflectometer, can predict delicately and around direct-burried pipeline, whether have the destructive external force that may damage direct-burried pipeline, stop in time this destructive external force to continue to occur thereby give the alarm, effectively reduce the probability of external force mechanical injuries direct-burried pipeline, ensured the safety of direct-burried pipeline.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is direct-burried pipeline safety pre-warning system structural representation provided by the invention;
Fig. 2 is the direct-burried pipeline safety pre-warning system structural representation that the embodiment of the present invention one provides;
Fig. 3 (a), 3 (b) are respectively optical fiber system of laying schematic top plan view and the diagrammatic cross-sections that the embodiment of the present invention one provides;
Fig. 4 (a), 4 (b) are respectively optical fiber system of laying schematic top plan view and the diagrammatic cross-sections that the embodiment of the present invention two provides;
Fig. 5 (a), 5 (b) are respectively optical fiber system of laying schematic top plan view and the diagrammatic cross-sections that the embodiment of the present invention three provides;
Fig. 6 (a), 6 (b) are respectively optical fiber system of laying schematic top plan view and the diagrammatic cross-sections that the embodiment of the present invention four provides;
Fig. 7 (a), 7 (b) are respectively optical fiber system of laying schematic top plan view and the diagrammatic cross-sections that the embodiment of the present invention five provides;
Fig. 8 (a), 8 (b) are respectively optical fiber system of laying schematic top plan view and the diagrammatic cross-sections that the embodiment of the present invention six provides;
Fig. 9 (a), 9 (b) are respectively optical fiber system of laying schematic top plan view and the diagrammatic cross-sections that the embodiment of the present invention seven provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The invention provides a kind of direct-burried pipeline safety pre-warning system, as shown in Figure 1, this system comprises: optical fiber 1, optical time domain reflectometer 2, alarm 4 and control processor 3.Below each device and annexation thereof are specifically introduced:
Optical fiber 1, along direct-buried pipe wire routing, and is laid in described direct-burried pipeline setting regions around.
Because direct-burried pipeline is generally all very long, as direct-buried cable reaches km magnitude, so the present invention should adopt transmission range to reach the optical fiber of suitable magnitude level, for example, the present invention can be, but not limited to adopt the optical fiber of the models such as 50/125 μ m, 100/140 μ m, 62.5/125 μ m, 200 μ m.
Although existing much along the technology of cable laying optical fiber in prior art, mostly the optical fiber in these technology is the characteristic for detection of cable self, as temperature, strain etc., therefore needs to be tightly snugly laid in around cable.Optical fiber in the present invention is not the characteristic for detection of direct-burried pipeline, but for detection of whether there is the destructive external force that may damage direct-burried pipeline near direct-burried pipeline, the mechanicalness external force that for example construction causes, because optical fiber has the feature of as easy as rolling off a log fracture under external force, therefore in the time laying optical fiber near of direct-burried pipeline, can rely on optical fiber to detect delicately the existence of this destructive external force, determine that direct-burried pipeline exists damage risk, thus early warning in time.
In order to reach the object that can prevent in time external force and continue to avoid damaging direct-burried pipeline in the time detecting that this destructive external force exists, just need the laying mode of reasonable design optical fiber 1 around direct-burried pipeline, for example, optical fiber 1 can not be too near apart from direct-burried pipeline, detect that this destructive external force also has little time while existence to report to the police otherwise may work as, direct-burried pipeline is just damaged, in addition, optical fiber 1 can not be too far away apart from direct-burried pipeline, otherwise be easy to cause to compared with distant location, cause dangerous external force to report to the police can to direct-burried pipeline yet, cause early warning system confidence level to decline.
Preferably, the present invention can be according to construction experience in the past, near direct-burried pipeline, set a rational regional extent, optical fiber 1 is arranged in the regional extent of this setting, to reach the object that can prevent in time external force and continue to avoid damaging direct-burried pipeline in the time detecting that this destructive external force exists.
When concrete enforcement is of the present invention, can be one along the optical fiber of same direct-buried pipe wire routing, also can be many, no matter number of fibers is how many, as long as there is optical fiber to occur fracture, judge that direct-burried pipeline exists damage risk.But consider from the angle that reduces costs, is easy to construction, be easy to detect, preferably, for same direct-burried pipeline, adopt an optical fiber to lay.
Optical time domain reflectometer 2, connects optical fiber 1, and for sending test light signal to optical fiber 1, whether detection fiber 1 ruptures, and fibercuts point is positioned.
Optical time domain reflectometer (OTDR, Optical Time Domain Reflectometer) be conventional test instrumentation in Construction of Optical Cable Line, maintenance and monitoring, fine status and malfunction that can detection fiber circuit, the accurately position of positioning optical waveguides breakaway poing, bending, fusion point position to fibre circuit also can be differentiated well.The present invention has utilized fine status that optical time domain reflectometer can detection fiber circuit and the accurate function of positioning optical waveguides breakaway poing just.
After fibercuts, use optical fiber to carry out welding to breakaway poing if will continue again, because the optical time domain reflectometer that the present invention adopts can be differentiated optical fiber fusion welding point, therefore the optical fiber after welding can not have influence on the follow-up use of system.
Alarm 4, connects control processor 3.
When concrete enforcement, the present invention can be, but not limited to adopt audible-visual annunciator or hummer.
Control processor 3, connect optical time domain reflectometer 2 and alarm 4, for obtaining optical time domain reflectometer 2, whether optical fiber 1 be there is to the testing result of fracture and the positioning result to fibercuts point, in the time there is fracture in optical fiber 1, determine that direct-burried pipeline exists damage risk, control alarm 4 and report to the police, and determine that according to the positioning result of fibercuts point direct-burried pipeline exists the particular location that damages risk.
In the present invention, control processor 3 is mainly that the testing result based on optical time domain reflectometer 2 judges whether direct-burried pipeline has destructive external force to exist around, concrete, if it is intact along the optical fiber 1 of direct-buried pipe wire routing that the testing result of optical time domain reflectometer 2 shows, control processor 3 judges that direct-burried pipeline does not around exist it is had and damages dangerous destructive external force, if showing, the testing result of optical time domain reflectometer 2 ruptures along the optical fiber 1 of direct-buried pipe wire routing, control processor 3 judges that the existence around of direct-burried pipeline has and damages dangerous destructive external force it, and optical time domain reflectometer 2 has reflected the particular location of this destructive external force to the positioning result of fibercuts point, in this case, control processor 3 will be controlled alarm 4 and report to the police, to notify in time related personnel to prevent in time this destructive external force, to ensure the safety of direct-burried pipeline.
Consider direct-burried pipeline generally lay distance all very long, related territorial scope is wider, for make alarm function can be prevention more in time likely damage the external force of direct-burried pipeline, the present invention in the specific implementation, can multiple alarms 4 be set along direct-burried line distribution, in the time that control processor 3 determines that direct-burried pipeline exists damage risk, command range direct-burried pipeline exists and damages the nearest alarm 4 of the particular location of risk (also alarm 4) nearest apart from fibercuts point particular location and report to the police, to notify in time field staff to stop this destructive external force, in order to avoid damage direct-burried pipeline.
When concrete enforcement, the control processor 3 in the present invention can be, but not limited to adopt AT89S52 type chip microcontroller; In addition, between control processor 3 and alarm 4, can be that radio communication is connected, control processor 3 is reported to the police by wireless communication signals control alarm 4.
There is for making relevant staff can accurately understand direct-burried pipeline the particular location that damages risk, thereby take better to stop loss measure, the present invention can also make control processor 3 connect a display, to show that by map direct-burried pipeline exists the particular location that damages risk.
When concrete enforcement, the present invention can be, but not limited to liquid crystal display.
In the present invention, it is direct-buried cable, optical cable, aqueduct, oil pipeline or gas pipe line that direct-burried pipeline can be, but not limited to.
In a kind of preferred embodiment, in the time being applied to direct-buried cable, control processor in the present invention can also exist the more specific location information of damaging risk to be uploaded to transformer station's communication manager direct-buried cable, be uploaded to scheduling master station by transformer station's integrated system passage again, so that the management and running department of direct-buried cable understands risk information in time, notify relevant staff to arrive the on-the-spot this destructive external force of preventing, also make to stop loss in time work and obtain higher level, the more support of wide region.
Embodiment mono-
The present embodiment provides a kind of direct-buried cable safety pre-warning system, and as shown in Figure 2, this system comprises: control processor 23, optical time domain reflectometer 22, multiple audible-visual annunciator 24, liquid crystal display 25, optical fiber 21; Wherein, optical fiber 21 is laid in direct-buried cable near zone, optical time domain reflectometer 22 is connected to the end of optical fiber 21, multiple audible-visual annunciators 24 distribute and are installed in the area along the line of direct-buried cable, and control processor 23 connects respectively optical time domain reflectometer 22, liquid crystal display 25 and each audible-visual annunciator 24; Between control processor 23 and audible-visual annunciator 24 for radio communication is connected.In addition, the control processor 23 in the present embodiment also connects transformer station's communication manager by RS-485 bus.
The direct-buried cable safety pre-warning system that the present embodiment provides, whether its specific works principle is as follows: optical time domain reflectometer 22 sends test light signal to optical fiber 21, rupture, and fibercuts point is positioned with detection fiber 21, whether control processor 23 Real-time Obtaining optical time domain reflectometers 22 there is the testing result of fracture and the positioning result to fibercuts point to optical fiber 21, in the time that testing result shows that fracture occurs optical fiber 21, control processor 23 judges that direct-buried cable exists damage risk, determine the particular location that occurs this damage risk according to the positioning result of fibercuts point, to the nearest alarm transmitted signal of the particular location apart from this damage risk, simultaneously, the information of the particular location of this damage risk is sent to liquid crystal display 25, and the information of the particular location of this damage risk is uploaded to transformer station's communication manager, the audible-visual annunciator 24 that receives signal transfers duty to and reports to the police from holding state, liquid crystal display 25 shows this particular location with ground diagram form, transformer station's communication manager is uploaded to cable scheduling master station by the more specific location information of this damage risk by transformer station's integrated system passage again.
If Fig. 3 (a) is the schematic top plan view of the concrete system of laying of optical fiber in the present embodiment, Fig. 3 (b) is the M-M diagrammatic cross-section of Fig. 3 (a), in the present embodiment, the concrete system of laying of optical fiber is: optical fiber 1# starts from one end of direct-buried cable along its axis parallel lay-up, turn back and continue along its axis parallel lay-up until get back to starting point to its other end, optical fiber 1# is divided into two sections on the whole, these two sections parallel and be laid in symmetrically the both sides of direct-buried cable, in same level, level is at a distance of 0.3 meter, apart from 0.2 meter, ground, with the surface level at direct-buried cable place at a distance of 0.6 meter.
Embodiment bis-
The direct-buried cable safety pre-warning system that the present embodiment and embodiment mono-provide is basically identical, difference is, in the present embodiment, the system of laying of optical fiber is as shown in Fig. 4 (a)-4 (b), Fig. 4 (a) is schematic top plan view, Fig. 4 (b) is the M-M diagrammatic cross-section of Fig. 4 (a), optical fiber 1# and optical fiber 2# all start from one end of direct-buried cable along its axis parallel lay-up, turn back and continue along its axis parallel lay-up until get back to starting point to its other end, optical fiber 1# and optical fiber 2# are all divided into two sections, parallel and be laid in symmetrically the both sides of direct-buried cable, wherein, two sections of optical fiber 1# in same level, level is at a distance of 0.5 meter, apart from 0.2 meter, ground, with the surface level at direct-buried cable place at a distance of 0.6 meter, two sections of optical fiber 2# on another surface level, level is at a distance of 0.3 meter, apart from 0.6 meter, ground, with the surface level at direct-buried cable place at a distance of 0.2 meter.
Embodiment tri-
The direct-buried cable safety pre-warning system that the present embodiment and embodiment mono-provide is basically identical, difference is, in the present embodiment, the system of laying of optical fiber is as shown in Fig. 5 (a)-5 (b), Fig. 5 (a) is schematic top plan view, Fig. 5 (b) is the M-M diagrammatic cross-section of Fig. 5 (a), optical fiber 1# starts to be sinuous formula and lays until the other end from one end of direct-buried cable, whole piece optical fiber is on the surface level apart from 0.2 meter, ground, with the surface level at direct-buried cable place at a distance of 0.6 meter, and it is parallel with direct-buried cable that optical fiber 1# is line A and the line B (in figure shown in dotted line) of the formula bending part that wriggles, and be symmetrically distributed in the both sides of direct-buried cable, line A and line B level are at a distance of 0.3 meter.
Embodiment tetra-
The direct-buried cable safety pre-warning system that the present embodiment and embodiment mono-provide is basically identical, difference is, in the present embodiment, the system of laying of optical fiber is as shown in Fig. 6 (a)-6 (b), Fig. 6 (a) is schematic top plan view, Fig. 6 (b) is the M-M diagrammatic cross-section of Fig. 6 (a), optical fiber 1# starts to be sinuous formula and lays until the other end from one end of direct-buried cable, whole piece optical fiber 1# is on the surface level apart from 0.2 meter, ground, with the surface level at direct-buried cable place at a distance of 0.6 meter, and it is parallel with direct-buried cable that optical fiber 1# is line A and the line B (in figure shown in dotted line) of the formula bending part that wriggles, and be symmetrically distributed in the both sides of direct-buried cable, line A and line B level are at a distance of 0.5 meter, optical fiber 2# starts to be sinuous formula and lays until the other end from one end of direct-buried cable, whole piece optical fiber 2# is on the surface level apart from 0.6 meter, ground, with the surface level at direct-buried cable place at a distance of 0.2 meter, and it is parallel with direct-buried cable that optical fiber 2# is line C and the line D (in figure shown in dotted line) of the formula bending part that wriggles, and be symmetrically distributed in the both sides of direct-buried cable, line C and line D level are at a distance of 0.3 meter.
Embodiment five
The direct-buried cable safety pre-warning system that the present embodiment and embodiment mono-provide is basically identical, difference is, in the present embodiment, the system of laying of optical fiber is as shown in Fig. 7 (a)-7 (b), Fig. 7 (a) is schematic top plan view, Fig. 7 (b) is the M-M diagrammatic cross-section of Fig. 7 (a), optical fiber 1# and optical fiber 2# all start to be sinuous formula and lay until the other end from one end of direct-buried cable, can find out from sectional view 7 (b), optical fiber 1# and optical fiber 2# are all taking the axis of direct-buried cable as axle center, be cambered surface around direct-buried cable, and the cambered surface that optical fiber 1# is and the axis of direct-buried cable are at a distance of 0.5 meter, the cambered surface that optical fiber 2# is and the axis of direct-buried cable are at a distance of 0.3 meter.
Embodiment six
The direct-buried cable safety pre-warning system that the present embodiment and embodiment mono-provide is basically identical, difference is, in the present embodiment, the system of laying of optical fiber is as shown in Fig. 8 (a)-8 (b), Fig. 8 (a) is schematic top plan view, Fig. 8 (b) is the M-M diagrammatic cross-section of Fig. 8 (a), optical fiber 1# and optical fiber 2# all start to be sinuous formula and lay until the other end from one end of direct-buried cable, can find out from sectional view 8 (b), optical fiber 1# is taking the axis of direct-buried cable as axle center, be cambered surface around direct-buried cable, and the cambered surface that optical fiber 1# is and the axis of direct-buried cable are at a distance of 0.3 meter, whole piece optical fiber 2# is on the surface level apart from 1.0 meters, ground, with the surface level at direct-buried cable place at a distance of 0.2 meter, and it is parallel with direct-buried cable that optical fiber 2# is line E and the line F (in figure shown in dotted line) of the formula bending part that wriggles, and be symmetrically distributed in the both sides of direct-buried cable, line E and line F level are at a distance of 0.3 meter.
Embodiment seven
The direct-buried cable safety pre-warning system that the present embodiment and embodiment mono-provide is basically identical, difference is, in the present embodiment, the system of laying of optical fiber is as shown in Fig. 9 (a)-9 (b), Fig. 9 (a) is schematic top plan view, Fig. 9 (b) is the M-M diagrammatic cross-section of Fig. 9 (a), optical fiber 1# and optical fiber 2# all start to be sinuous formula and lay until the other end from one end of direct-buried cable, can find out from sectional view 9 (b), optical fiber 1# and optical fiber 2# orthogonal thereto inclined-plane setting, and the axis of optical fiber inclined-plane that 1# is and optical fiber inclined-plane that 2# is and direct-buried cable is at a distance of 0.3 meter.
The present invention takes full advantage of optical fiber and is subject to external force easy fracture, long transmission distance, speed is fast, anti-electromagnetic interference capability is strong, corrosion-resistant, constructability is safeguarded, system of laying is flexible, the features such as cost is low, optical fiber is laid in around direct-burried pipeline, determine the crack conditions of optical fiber by optical time domain reflectometer, can predict delicately and around direct-burried pipeline, whether have the destructive external force that may damage direct-burried pipeline, stop in time this destructive external force to continue to occur thereby give the alarm, effectively reduce the probability of external force mechanical injuries direct-burried pipeline, ensure the safety of direct-burried pipeline, avoid pipeline to damage the unnecessary loss causing.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiments of the invention; the protection domain being not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. a direct-burried pipeline safety pre-warning system, is characterized in that, comprising:
Optical fiber, along direct-buried pipe wire routing, and is laid in described direct-burried pipeline setting regions around;
Whether optical time domain reflectometer, connects described optical fiber, for sending test light signal to described optical fiber, detect described optical fiber and rupture, and fibercuts point is positioned;
Alarm, connects control processor;
Control processor, connect described optical time domain reflectometer, for obtaining described optical time domain reflectometer, whether described optical fiber be there is to the testing result of fracture and the positioning result to fibercuts point, in the time there is fracture in optical fiber, determine that described direct-burried pipeline exists damage risk, control described alarm and report to the police, and determine that according to the positioning result of fibercuts point described direct-burried pipeline exists the particular location that damages risk.
2. direct-burried pipeline safety pre-warning system according to claim 1, is characterized in that, described alarm quantity is multiple, and distributes that to be installed in described direct-burried pipeline along the line;
Described control processor is also for determining that described direct-burried pipeline exists while damaging risk, and direct-burried pipeline exists the nearest alarm of particular location that damages risk to report to the police described in command range.
3. direct-burried pipeline safety pre-warning system according to claim 1, is characterized in that, also comprises: display, connects described control processor; ?
Described control processor is also for existing the particular location that damages risk to be sent to described display described direct-burried pipeline;
There is for show described direct-burried pipeline by map the particular location that damages risk in described display.
4. direct-burried pipeline safety pre-warning system according to claim 1, is characterized in that, described optical fiber parallel lay-up is in described direct-burried pipeline setting regions around.
5. direct-burried pipeline safety pre-warning system according to claim 1, is characterized in that, described optical fiber wriggles and is laid in described direct-burried pipeline setting regions around.
6. direct-burried pipeline safety pre-warning system according to claim 1, is characterized in that, described optical fiber integrally is in same level.
7. direct-burried pipeline safety pre-warning system according to claim 1, is characterized in that, described fiber distribution is on different surface levels.
8. according to the arbitrary described direct-burried pipeline safety pre-warning system of claim 1-7, it is characterized in that, described direct-burried pipeline is direct-buried cable.
9. direct-burried pipeline safety pre-warning system according to claim 8, is characterized in that, described control processor also damages risk more specific location information for described direct-burried pipeline is existed is uploaded to transformer station's communication manager and scheduling master station.
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Application publication date: 20141217 |