CN215262177U - Cable traction tube monitoring system based on pressure measurement optical fiber feedback - Google Patents
Cable traction tube monitoring system based on pressure measurement optical fiber feedback Download PDFInfo
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- CN215262177U CN215262177U CN202121671958.5U CN202121671958U CN215262177U CN 215262177 U CN215262177 U CN 215262177U CN 202121671958 U CN202121671958 U CN 202121671958U CN 215262177 U CN215262177 U CN 215262177U
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Abstract
The utility model relates to a cable traction tube monitoring system based on pressure measurement optical fiber feedback, which comprises a cable working well, wherein the cable working well is vertically excavated on both sides of a road, and a composite tube is communicated between the cable working wells; the composite pipe is of a sleeve structure and comprises an mpp power cable protection pipe, the CPVC power pipe is sleeved on the periphery of the mpp power cable protection pipe through uniformly distributed connection supporting sleeves, supporting gaps are uniformly distributed between the mpp power cable protection pipe and the CPVC power pipe, a pressure measuring optical fiber cluster is arranged in each supporting gap and consists of a plurality of pressure measuring optical fibers, the pressure measuring optical fibers are uniformly distributed in the supporting gaps, and a power cable and a reference optical fiber are installed in the mpp power cable protection pipe; and an exchanger is installed in the cable working well. The utility model has the advantages of simple and compact overall structure, adopt the optical fiber layer of distributing on MPP tubular product wall to the switch in the well is connected to the cluster mode, carries out real-time supervision through cluster optical fiber optical power attenuation degree to the degree that the tubular product received road surface load extrusion, deformation.
Description
Technical Field
The utility model belongs to the technical field of power equipment, a cable traction tube monitoring system based on pressure measurement optical fiber feedback is related to.
Background
The power pipeline passes through roads, factories and other areas which cannot be directly excavated on the road surface and needs to pass through in a non-excavation traction pipe mode; however, although the trenchless pipe (MPP pipe) has strong toughness, it may be extruded and deformed after a period of time under the action of heavy ground load and soil pressure, and when the extrusion degree and the deformation degree are serious to a certain degree, the cable cannot be passed through the pipe, that is, the passage underground passage is discarded. Due to the uncertainty of the defect development process, the defect development degree cannot be monitored, so that the pipe is often found to be deformed and cannot be used when the pipe is penetrated, and the design and construction efficiency is greatly reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cable traction tube monitoring system based on pressure measurement optical fiber feedback can solve the problem that can't in time discover tubular product deformation.
According to the utility model provides a technical scheme: a cable traction pipe monitoring system based on pressure measurement optical fiber feedback comprises cable working wells, wherein the cable working wells are vertically excavated on two sides of a road, and composite pipes are communicated among the cable working wells; the composite pipe is of a sleeve structure and comprises an mpp power cable protection pipe, the CPVC power pipe is sleeved on the periphery of the mpp power cable protection pipe through uniformly distributed connection supporting sleeves, supporting gaps are uniformly distributed between the mpp power cable protection pipe and the CPVC power pipe, a pressure measuring optical fiber cluster is arranged in each supporting gap and consists of a plurality of pressure measuring optical fibers, the pressure measuring optical fibers are uniformly distributed in the supporting gaps, and a power cable and a reference optical fiber are installed in the mpp power cable protection pipe; and a switch is installed in the cable working well, and the two ends of the pressure measuring optical fiber cluster and the reference optical fiber are connected with the light intensity transceiver.
As a further improvement, the switch is connected with the power inner net through an optical cable.
As a further improvement, the composite pipe is positioned below the road surface.
As the utility model discloses a further improvement, installation cable traction tube monitoring system in the electric power intranet, cable traction tube monitoring system installs respectively on the computer of department, construction department, tube hole database office is examined in the fortune.
As a further improvement of the utility model, the inner core is a single mode fiber core in the pressure measuring fiber, and the diameter of the single mode fiber core is 8 mu m ~10 mu m.
As a further improvement of the utility model, the number of the pressure measuring optical fibers is at least 20.
As a further improvement, the switch is hung on the inner wall of the cable working well, and the power supply of the switch adopts the mode of 'induction power taking + battery'.
As the utility model discloses a further improvement, light intensity transceiver includes laser generator and light power detection device, and during laser generator and light power detection device were the cable work well of both sides respectively, pressure measurement optic fibre one end was connected to the laser generator transmitting terminal, and light power detection device receiving terminal is connected to the pressure measurement optic fibre other end.
As a further improvement, the optical power detector is an optical power meter.
The positive progress effect of this application lies in:
the utility model has the advantages of simple and compact integral structure, adopt the fiber layer of distributing on MPP tubular product wall, with the cluster mode, connect the switch of going into the well, receive road surface load extrusion, the degree of deformation to the tubular product through the optical power attenuation degree of cluster light carries out real-time supervision, carry out real-time transmission with data through fibre channel simultaneously, to gathering end feedback system, according to the experience after the operation, the optical power attenuation degree of cluster light exceeds 30% and needs the early warning, it carries out off-load and reinforcement to exceed 70% urgent to take measures. Meanwhile, a power supply of the exchanger adopts a mode of 'induction power taking + battery', namely a three-phase cable is arranged in an unbalanced way in the running process of the cable to generate a three-phase alternating electromagnetic field in space, an induction voltage is induced by a coil to form an alternating power supply, and the alternating power supply can supply power to the battery after being rectified; the power loss to the running power cable is basically negligible due to the small power loss. The system for monitoring the health state of the trenchless cable traction tube hole based on the cluster optical fiber feedback can serve as a preliminary platform for block load planning, early-stage investment of design units and intelligent cable channel construction in the future.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a cross-sectional view a-a of fig. 1.
FIG. 3 is a schematic view of the bending point of the pressure sensing fiber.
Fig. 4 is a flow chart of the cable pull tube monitoring system.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances for purposes of describing the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover such processes, methods, systems, articles, or apparatus that comprise a list of steps or elements, are not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such processes, methods, articles, or apparatus.
Fig. 1 to 4 include a composite pipe 1, a pressure measuring optical fiber 2, a cable work well 3, a switch 4, a power cable 5, a laser generator 6, an optical power detection device 7, a reference optical fiber 8, an electric power intranet 9, a pipe hole database 10, a transportation and inspection department 11, a construction department 12, and the like.
As shown in fig. 1-2, the utility model relates to a cable traction tube monitoring system based on pressure measurement optical fiber feedback, including cable work well 3, the vertical excavation in road both sides of cable work well 3 communicates compound pipe 1 between the cable work well 3. The composite pipe 1 is located below a road surface, the composite pipe 1 is of a sleeve structure and comprises an mpp power cable protection pipe 1-1, the CPVC power pipe 1-2 is sleeved on the periphery of the mpp power cable protection pipe 1-1 through uniformly distributed connection supporting sleeves, supporting gaps are uniformly distributed between the mpp power cable protection pipe 1-1 and the CPVC power pipe 1-2, pressure measuring optical fiber clusters are arranged in the supporting gaps and comprise a plurality of pressure measuring optical fibers 2, the pressure measuring optical fibers 2 are uniformly distributed in the supporting gaps, and a power cable 5 and a reference optical fiber 8 are installed in the mpp power cable protection pipe 1-1. An exchanger 4 is arranged in the cable working well 3, and two ends of the pressure measuring optical fiber cluster and the reference optical fiber 8 are connected with a light intensity transceiver.
The inner core in the pressure measuring optical fiber 2 is a single-mode optical fiber core, and the diameter of the single-mode optical fiber core is 8-10 mu m. The core is surrounded by a glass envelope, commonly referred to as a cladding, of lower refractive index than the core, which keeps the light rays within the core. Further on the outside is a thin plastic outer jacket, i.e. a coating, for protecting the cladding. The optical fibers are typically bundled and protected by an outer jacket. The core is usually a double-walled concentric cylinder of small cross-sectional area made of silica glass, which is brittle and easily broken, and therefore requires the addition of a protective layer.
As shown in fig. 3, the pressure measuring optical fiber 2 is provided with a bending point, and the pressure measuring optical fiber 2 at the bending point is in a fiber microbending state, that is, the optical power of the pressure measuring optical fiber 2 at the bending point is still in a normal numerical range, but enters a failure numerical range after being deformed by a little.
The pressure measuring optical fiber 2 at the bending point adopts annular bending.
The pressure measuring optical fibers 2 are arranged in the supporting gap through the connecting pieces, the number of the pressure measuring optical fibers is at least 20, and bending points are distributed at different positions of the composite pipe 1, so that the detection range and accuracy can be improved. The connecting piece can be an adhesive tape or the like.
The light intensity receiving and sending device comprises a laser generator 6 and a light power detection device 7, the laser generator 6 and the light power detection device 7 are respectively arranged in the cable working wells 3 on two sides, the transmitting end of the laser generator 6 is connected with the pressure measuring optical fiber 2 and one end of the reference optical fiber 8, and the other ends of the pressure measuring optical fiber 2 and the reference optical fiber 8 are connected with the receiving end of the light power detection device 7. The output end of the optical power detection device 7 is connected with the input end of the switch 4.
The optical power detection means 7 is an optical power meter.
The switch 4 is suspended on the inner wall of the cable working well 3, and meanwhile, a power supply of the switch 4 adopts a mode of 'induction power taking + battery' — three-phase alternating electromagnetic field is generated in space by the unbalanced arrangement of three-phase cables in the running process of the cables, induction voltage is induced by coils to form an alternating power supply, and the alternating power supply can supply power to the battery after rectification; the power loss to the running power cable is basically negligible due to the small power loss.
In order to facilitate remote management, the light intensity transceiver is connected with the switch 4, and the switch 4 is connected with the power intranet 9 through an optical cable.
A cable traction tube monitoring system is installed in an electric power intranet 9, as shown in fig. 4, the cable traction tube monitoring system is respectively installed on computers of a pipe hole database 10, a transportation inspection department 11 and a construction department 12 office, the cable traction tube monitoring system can monitor the condition of a pressure measuring optical fiber 2 in real time through a switch 4, when the optical power detection device 7 detects that the numerical value of a pressure measuring optical fiber cluster is lower than the numerical value of a reference optical fiber 8 by 50%, the transportation inspection department 11 is notified to give an early warning, when the numerical value is lower than 30%, the construction department 12 is notified to take measures to carry out unloading and reinforcement, and a notification record is recorded into the computer of the pipe hole database 10.
The cable traction pipe monitoring system based on pressure measurement optical fiber feedback can serve as a preliminary platform for block load planning, early-stage investment of design units and intelligent cable channel construction in the future.
The utility model aims to improve the defects, thereby providing the utility model; relate to a non-excavation cable traction tube hole health status real-time monitoring system based on cluster optic fibre feedback, belong to power equipment technical field. The MPP/CPVC pipe comprises an MPP/CPVC pipe with a cluster strain optical fiber layer, a light intensity transceiver and a tip feedback system. The MPP/CPVC pipe with the cluster strain optical fiber layer comprises an MPP pipe, a CPVC pipe for protection, a cluster strain optical fiber layer and a reference optical fiber layer, and the light intensity transceiver comprises a laser transmitter, a light power monitoring device, a network switch, a rechargeable battery system and a power-taking CT charging device.
The utility model has the advantages of simple structure, compact, adopt the optical fiber layer of meeting an emergency that distributes on the MPP tubular product wall, the load that utilizes the local microbend of the optic fibre of meeting an emergency along tubular product longitudinal distribution to the light power carries out on-line monitoring, turn into light intensity information with pressure information, and with the switch in the signal connection access well, receive road surface load extrusion to tubular product through relative light power (with reference optic fibre for referring to the light power), the degree of deformation carries out real-time supervision, carry out real-time transmission through fibre channel with data simultaneously, to the tip feedback system of collection, experience after according to the operation, the optical power attenuation degree of cluster optic fibre exceeds 50% and needs the early warning, it carries out off-load and reinforcement to need promptly to take measures to exceed 70%. The information can be transmitted to a resource library for operation, inspection, construction and management and control through an electric power intranet, and relevant decision and data acquisition are carried out. Meanwhile, a power supply of the exchanger adopts a mode of 'induction power taking + battery', namely a three-phase cable is arranged in an unbalanced way in the running process of the cable to generate a three-phase alternating electromagnetic field in space, an induction voltage is induced by a coil to form an alternating power supply, and the alternating power supply can supply power to the battery after being rectified; the power loss to the running power cable is basically negligible due to the small power loss. The system for monitoring the health state of the trenchless cable traction tube hole based on the cluster optical fiber feedback can serve as a preliminary platform for block load planning, early-stage investment of design units and intelligent cable channel construction in the future.
The working process of the utility model is as follows:
and (2) digging cable working wells 3 at two sides of an area where the road surface cannot be directly dug, drilling inclined access holes at a horizontal angle of 15 degrees on the inner wall of one side, close to the road surface, of the cable working well 3 by adopting professional installing and passing equipment, drilling horizontal installation holes after reaching a certain depth, and drilling the cable working wells 3 at the other side of the road surface at an angle of 15 degrees after penetrating through the area. Therefore, the two ends of the composite pipe 1 are 15 degrees, and the middle part is horizontally arranged.
When the ground load above the composite tube 1 and the soil pressure act, extrusion and deformation may occur after a period of time, and when the extrusion degree and the deformation degree are serious to a certain degree, the composite tube 1 deforms, and the pressure measuring optical fiber 2 is bent and damaged by the deformation amount which exceeds the bearable supporting gap, so that the optical power value of the pressure measuring optical fiber cluster is reduced.
The ground load and the soil pressure reflect the pressure on the wall of the pipe, so that the optical power of the pressure measuring optical fiber cluster is relayed through the switch 4 and fed back to the centralized control center, the computing unit can directly obtain the optical power attenuation degree of the pressure measuring optical fiber cluster, and the health state of the pipe can be obtained after the information is transmitted to the cloud end through the optical fiber channel. Through the transmitted information, the light power attenuation degree of the pressure measuring optical fiber cluster exceeds 50%, early warning is needed, and when the light power attenuation degree exceeds 70%, a construction department 12 is informed to take measures for unloading and reinforcing.
The exchanger 4 carries out real-time supervision through pressure measurement optical fiber cluster luminous power attenuation degree to the degree that tubular product received road surface load extrusion, deformation, carries out real-time transmission with data through fibre channel simultaneously to a collection tip feedback system to judge tubular product health status according to the online condition of light off-line, in time disappear scarcely.
It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (9)
1. A cable traction pipe monitoring system based on pressure measurement optical fiber feedback is characterized by comprising cable working wells (3), wherein the cable working wells (3) are vertically excavated on two sides of a road, and composite pipes (1) are communicated between the cable working wells (3); the composite pipe (1) is of a sleeve structure and comprises an mpp power cable protection pipe (1-1), the periphery of the mpp power cable protection pipe (1-1) is sleeved with a CPVC power pipe (1-2) through uniformly distributed connection supports, supporting gaps are uniformly distributed between the mpp power cable protection pipe (1-1) and the CPVC power pipe (1-2), pressure measuring optical fiber clusters are arranged in the supporting gaps and consist of a plurality of pressure measuring optical fibers (2), the pressure measuring optical fibers (2) are uniformly distributed in the supporting gaps, and a power cable (5) and a reference optical fiber (8) are arranged in the mpp power cable protection pipe (1-1); an exchanger (4) is arranged in the cable working well (3), and both ends of the pressure measuring optical fiber cluster and the reference optical fiber (8) are connected with a light intensity transceiver.
2. The pressure measurement optical fiber feedback-based cable traction tube monitoring system according to claim 1, wherein the switch (4) is connected to the power intranet (9) through an optical cable.
3. The pressure measurement optical fiber feedback-based cable traction tube monitoring system according to claim 1, wherein the composite tube (1) is located below a road surface.
4. The cable traction tube monitoring system based on pressure measuring optical fiber feedback as claimed in claim 1, wherein the cable traction tube monitoring system is installed in the power intranet (9), and the cable traction tube monitoring system is respectively installed on computers of an operation and inspection department (11), a construction department (12) and a tube hole database (10) office.
5. The cable traction tube monitoring system based on pressure measurement optical fiber feedback as claimed in claim 1, wherein the inner core in the pressure measurement optical fiber (2) is a single mode optical fiber core, and the diameter of the single mode optical fiber core is 8 μm to 10 μm.
6. The cable pulling tube monitoring system based on pressure measurement optical fiber feedback as claimed in claim 1, wherein the number of the pressure measurement optical fibers (2) is at least 20.
7. The cable traction tube monitoring system based on pressure measurement optical fiber feedback as claimed in claim 1, wherein the switch (4) is suspended on the inner wall of the cable working well (3), and the power supply of the switch (4) adopts a mode of 'induction power taking + battery'.
8. The cable traction tube monitoring system based on pressure measuring optical fiber feedback as claimed in claim 1, wherein the light intensity transceiver comprises a laser generator (6) and an optical power detection device (7), the laser generator (6) and the optical power detection device (7) are respectively arranged in the cable working wells (3) at two sides, the transmitting end of the laser generator (6) is connected with one end of the pressure measuring optical fiber (2), and the other end of the pressure measuring optical fiber (2) is connected with the receiving end of the optical power detection device (7).
9. The pressure measurement optical fiber feedback-based cable pulling tube monitoring system according to claim 8, wherein the optical power detection device (7) is an optical power meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121671958.5U CN215262177U (en) | 2021-07-21 | 2021-07-21 | Cable traction tube monitoring system based on pressure measurement optical fiber feedback |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121671958.5U CN215262177U (en) | 2021-07-21 | 2021-07-21 | Cable traction tube monitoring system based on pressure measurement optical fiber feedback |
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| CN215262177U true CN215262177U (en) | 2021-12-21 |
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| CN202121671958.5U Active CN215262177U (en) | 2021-07-21 | 2021-07-21 | Cable traction tube monitoring system based on pressure measurement optical fiber feedback |
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- 2021-07-21 CN CN202121671958.5U patent/CN215262177U/en active Active
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