CN100399019C - Intelligent on-line detection system for corrosion and leakage of underground pipeline - Google Patents

Intelligent on-line detection system for corrosion and leakage of underground pipeline Download PDF

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Publication number
CN100399019C
CN100399019C CNB2004100679108A CN200410067910A CN100399019C CN 100399019 C CN100399019 C CN 100399019C CN B2004100679108 A CNB2004100679108 A CN B2004100679108A CN 200410067910 A CN200410067910 A CN 200410067910A CN 100399019 C CN100399019 C CN 100399019C
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data acquisition
pipeline
acoustic emission
intelligent
information
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CNB2004100679108A
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Chinese (zh)
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CN1603814A (en
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王汝笠
孔繁金
傅艳红
张志伟
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上海奥达光电子科技有限公司
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Abstract

The present invention relates to an intelligent on-line detection system for corrosion and leakage of an underground pipeline, which is composed of an intelligent wired detection device, an intelligent wireless detection device, a wired data acquisition device, a wireless data acquisition device, a data acquisition bus, a power supply cable, a network, an information center, a database and user terminals. Intelligent detection devices are arranged on the surface of the pipeline with a certain distance for acquiring acoustic emission signals sent by the pipeline and classifying and grading the working conditions of the pipeline, and then the acoustic emission signals are transmitted to the information center through the data acquisition devices and the network. After the information center integrates the generating time of the acoustic emission signals sent by the intelligent detection devices and the information of processing results, the positions generating the acoustic emission signals in the pipeline are positioned, and then all the information is stored in the database. Simultaneously, the information center also sends instructions and united real time clock correction signals through the network. The user terminals can call the desired pipeline information from the database through the network and demonstrate or print and output on the respective display.

Description

Underground pipeline corrosion and leakage intelligent on-line detection system
Technical field
The present invention relates to the pipeline Dynamic Non-Destruction Measurement, relate to the data acquisition and the information processing technology again, relate to wireless again or cable communicating technology, particularly a kind of underground pipeline corrosion and leakage intelligent on-line detection system.
Background technology
The modern metropolitan cities underground pipeline in length and breadth.Development along with urban construction, the external force that high-rise building, overpass, subterranean tunnel, the construction of underground traffic are subjected to underground pipeline constantly changes, add the aging of pipeline itself, therefore, because the underground pipeline corrosion is frequent day by day with the accident that leakage causes.May 2 calendar year 2001, disclosed application number was 00135740.9 Chinese patent application " pipeline protection leak detecting device and method ", employing is with emitting antenna and accept antenna and all be fixed on method in the duct wall, use electromagnetic wave radiation in pipeline, utilize pipe crack, hole and pipeline configuration feature to the principle of reflection of electromagnetic wave detect pipeline damaged, break, operation situations such as leakage, pipeline configuration feature.And for example, on Dec 20th, 2000, disclosed application number was that 98810578.0 Chinese patent application " eddy current pipeline inspection device and method " has been introduced a kind of pipeline inspection device of advancing in pipeline, comprising: the device that is used for producing eddy current magnetism in pipeline; And the device that is used to detect the resultant magnetic field after passing through pipeline configuration, these devices can utilize hawser to be dragged by pipeline.Any defective of pipeline just can be located and detect to the azimuth information of amplitude by detecting magnetic field and phase information and the device that moves in pipeline.These inventions must be installed specific equipment at pipe interior, because these equipment occupy certain space, so on the one hand the fluid in the pipeline has been increased resistance, changed the Flow Field Distribution in the pipeline, testing result is exerted an influence, on the other hand, be not enough to hold the pipeline of particular device for internal diameter size, these inventions just can't be used.For another example, on October 20th, 1999, disclosed application number was 97198060.8 Chinese patent application " system of inspection pipeline ", introduce a kind of particularly system of removable or deformable layer in the pipe adapter between the tube part of pipeline that is used for checking, comprise an x-ray source, to the detector means of X ray or to the photographic film of X ray sensitivity, be used for received radiation and be placed in tube wall or described pipeline with respect to described radiogenic opposite side.In underground pipeline, the application of this invention is restricted for buried.
Intelligent online Non-Destructive Testing of the present invention is based on the acoustic emission under external force of tested pipeline.Acoustic emission is the new technology of modern widely day by day Non-Destructive Testing of a kind of application and structured material research.Its principle is: the material internal of primary structure member can discharge the plastic strain energy in damage defect germinating, expansion process.Strain energy is outwards propagated expansion with the stress wave form, and this phenomenon promptly is called acoustic emission phenomenon.Acoustic emission is exactly to adopt highly sensitive calibrate AE sensor to be installed on the sensor array that the primary structure member surface forms some, accept and gather the acoustic emission signal that comes from fault in material in real time, by location, identification, judgement and analysis, and then material damage defective, component strength, life-span etc. are made analyze and research these acoustic emission signals.For the periodic inspection at the equipment of using, the acoustic emission examination method can shorten the off-time of check or not need stopping production.Compare with other conventional lossless detection methods, the advantage of acoustic emission detection method is tangible.
Summary of the invention
The object of the present invention is to provide a kind of underground pipeline corrosion and leak intelligent on-line detection system.
The technical solution used in the present invention is that this underground corrosive pipeline has line detector, intelligent radio pick-up unit, cable data harvester, data acquisition device, data acquisition bus and service cable, network (LAN (Local Area Network), wide area network), information center, database and user terminal to form with the leakage intelligent on-line detection system by intelligence.Every a determining deviation intelligence being installed on the surface of pipeline has line detector, is used to gather the acoustic emission signal that pipeline sends, and the operating mode of pipeline is classified and defined the level.Then, intelligence has line detector by data acquisition bus and service cable the moment and the result that acoustic emission signal produces to be sent to the cable data harvester, simultaneously, intelligence has line detector to receive instruction and the real-time clock calibrating signal that the cable data harvester is sent by data acquisition bus and service cable.In addition, intelligence has line detector also to obtain the energy by data acquisition bus and service cable.Be not easy to lay the occasion of data acquisition bus and service cable at some, can the intelligent radio pick-up unit be installed to detect the operation conditions of pipeline at the outer wall of pipeline, the intelligent radio pick-up unit is sent to the data acquisition device in the mode of radio communication with the moment and the result that acoustic emission signal produces, and accepts instruction and real-time clock calibrating signal from the data acquisition device.The energy of intelligent radio pick-up unit both can obtain from the electrical network of locality, also can adopt the sun-generated electric power power supply.The cable data harvester receives intelligence to be had after the information that line detector sends or after the data acquisition device receives the information that the intelligent radio pick-up unit sends, sends information center to by network.Information center positions the place that produces acoustic emission signal in the pipeline after combining the information of moment that acoustic emission signal that each intelligent detection device sends produces and result, deposits all information in database then.Simultaneously, cable data harvester and data acquisition device also obtain instruction and unified real-time clock calibrating signal by network from information center.User terminal can be by network from the required duct size information of data base call, and demonstration or printout on display separately.
The present invention has following beneficial effect:
1. can detect the dynamic friendshipization of pipeline in real time, accurately locate underground pipeline corrosion and leakage point, and the type of defective is made the hazard rating assessment, be beneficial to functional department and in time take counter-measure, reduce the loss.
2. all information are by computer networking, remote transmission, and the terminal user can consult the corrosive pipeline in the regional extent and the multidate information of leakage by database, for investigation, decision-making provide foundation.
3. provide the digitizing evaluation measures for related personnel such as the design, construction, maintenance, management of examination underground pipeline and functional department.
4. according to the transport property of pipeline to acoustic emission signal, can keep at a certain distance away an intelligent detection device is installed, to compare quantities less with other detection techniques, and expense is lower, and can onlinely detect convenient management.
5. for backwoodsman pipeline, only need to adopt the intelligent radio pick-up unit, dual-mode antenna is installed, and adopt the sun-generated electric power power supply, just can carry out online detection.
6. the present invention also can be used for online detections such as bridge, tunnel, skyscraper, pressure vessel, aerospace appts, hoisting device, tank car, basin, cement components except the ruuning situation that can be used for online detection underground pipeline, and is of many uses.
Description of drawings
Fig. 1 is underground pipeline corrosion of the present invention and leakage intelligent on-line detection system synoptic diagram.
Fig. 2 has the theory diagram of line detector for intelligence among the present invention.
Fig. 3 is the theory diagram of intelligent radio pick-up unit among the present invention.
Fig. 4 is the theory diagram of cable data harvester among the present invention.
Fig. 5 is the theory diagram of data acquisition device among the present invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the invention is elaborated.
See also Fig. 1, said underground pipeline corrosion has line detector 1, intelligent radio pick-up unit 2, cable data harvester 3, data acquisition device 4, data acquisition bus and service cable 6, network 7 (LAN (Local Area Network), wide area network), information center 8, database 9 and user terminal 10 to form with the leakage intelligent on-line detection system by intelligence.Every a determining deviation intelligence being installed on the surface of pipeline 5 has line detector 1, is used to gather the acoustic emission signal that pipeline 5 sends, and the operating mode of pipeline 5 is classified and defined the level.Then, intelligence has line detector 1 by data acquisition bus and service cable 6 moment and the result that acoustic emission signal produces to be sent to cable data harvester 3, simultaneously, intelligence has line detector 1 to receive instruction and the real-time clock calibrating signal that cable data harvester 3 is sent by data acquisition bus and service cable 6.In addition, intelligence has line detector 1 also to obtain the energy by data acquisition bus and service cable 6.Be not easy to lay the occasion of data acquisition bus and service cable 6 at some, can intelligent radio pick-up unit 2 be installed to detect the operation conditions of pipeline at the outer wall of pipeline 5, intelligent radio pick-up unit 2 is sent to data acquisition device 4 in the mode of radio communication with the moment and the result that acoustic emission signal produces, and accepts instruction and real-time clock calibrating signal from data acquisition device 4.The energy of intelligent radio pick-up unit 2 both can obtain from the electrical network of locality, also can adopt the sun-generated electric power power supply.Cable data harvester 3 receives intelligence to be had after the information that line detector 1 sends or after data acquisition device 4 receives the information that intelligent radio pick-up unit 2 sends, sends information center 8 to by network 7.Information center 8 positions the place that produces acoustic emission signal in the pipeline after combining the information of moment that acoustic emission signal that each intelligent detection device sends produces and result, deposits all information in database 9 then.Simultaneously, cable data harvester 3 and data acquisition device 4 also obtain instruction and unified real-time clock calibrating signal by network 7 from information center 8.User terminal 10 can call required duct size information from database 9 by network 7, and demonstration or printout on display separately.
See also Fig. 2, the acoustic emission signal that said intelligence has line detector 1 to send by oneself calibrate AE sensor 101 receiving pipelines 5, convert digital signal to through analog to digital conversion 102, after digital filtering and spectrum analysis 103 processing, send into CPU (central processing unit) 104 again and carry out pattern-recognition, operating mode classification and damage deciding grade and level.The moment and result that CPU (central processing unit) 104 produces acoustic emission signal on the one hand deposit storer 105 in, in order to checking, by data acquisition bus interface 106 time and the result that acoustic emission signal produces are sent on the other hand.The real-time clock calibrating signal that CPU (central processing unit) 104 also receives instruction and clock 107 is calibrated by data acquisition bus interface 106.Intelligence has line detector 1 to obtain the required energy by power supply 108.
See also Fig. 3, the acoustic emission signal that said intelligent radio pick-up unit 2 sends by oneself calibrate AE sensor 201 receiving pipelines 5, convert digital signal to through analog to digital conversion 202, after digital filtering and spectrum analysis 203 processing, send into CPU (central processing unit) 204 again and carry out pattern-recognition, operating mode classification and damage deciding grade and level.The moment and result that CPU (central processing unit) 204 produces acoustic emission signal on the one hand deposit storer 205 in, in order to checking, by wireless receiving and dispatching 206 time and the result that acoustic emission signal produces are sent on the other hand.CPU (central processing unit) 204, also the real-time clock calibrating signal that receives instruction and clock 207 is calibrated by wireless receiving and dispatching 206.Intelligent radio pick-up unit 2 obtains the required energy by power supply 208.
See also Fig. 4, the moment and processing result information that the acoustic emission signal that the CPU (central processing unit) 302 of said cable data harvester 3 has line detector 1 to send by data acquisition bus interface 301 each intelligence of reception produces, information deposits storer 303 on the one hand, in order to checking, send to information center 8 by network interface 304 on the other hand, and receive instruction that information center 8 sends and the real-time clock calibrating signal that clock 305 is calibrated.Simultaneously, CPU (central processing unit) 302 also has line detector 1 to send instruction and real-time clock calibrating signal by data acquisition bus interface 301 to each intelligence.The cable data harvester 3 required energy are provided by power supply 306.
See also Fig. 5, the moment and processing result information that the acoustic emission signal that the CPU (central processing unit) 402 of said data acquisition device 4 is sent by wireless receiving and dispatching 401 each intelligent radio pick-up unit 2 of reception produces, information deposits storer 403 on the one hand, in order to checking, send to information center 8 by network interface 404 on the other hand, and receive instruction that information center 8 sends and the real-time clock calibrating signal that clock 405 is calibrated.Simultaneously, CPU (central processing unit) 402 also sends instruction and real-time clock calibrating signal by wireless receiving and dispatching 401 to each intelligent radio pick-up unit 2.The data acquisition device 4 required energy are provided by power supply 406.

Claims (5)

1. a underground pipeline corrodes and the leakage intelligent on-line detection system, has line detector (1), intelligent radio pick-up unit (2), cable data harvester (3), data acquisition device (4), data acquisition bus and service cable (6), network (7), information center (8), database (9) and user terminal (10) to form by intelligence; It is characterized in that every a determining deviation intelligence being installed on the surface of pipeline (5) has line detector (1), is used to gather the acoustic emission signal that pipeline (5) sends, and the operating mode of pipeline (5) is classified and defined the level; Then, intelligence has line detector (1) by data acquisition bus and service cable (6) moment and the result that acoustic emission signal produces to be sent to cable data harvester (3), simultaneously, intelligence has line detector (1) to receive instruction and the real-time clock calibrating signal that cable data harvester (3) is sent by data acquisition bus and service cable (6); In addition, intelligence has line detector (1) also to obtain the energy by data acquisition bus and service cable (6); Be not easy to lay the occasion of data acquisition bus and service cable (6) at some, can intelligent radio pick-up unit (2) be installed to detect the operation conditions of pipeline at the outer wall of pipeline (5), intelligent radio pick-up unit (2) is sent to data acquisition device (4) in the mode of radio communication with the moment and the result that acoustic emission signal produces, and accepts instruction and real-time clock calibrating signal from data acquisition device (4); The energy of intelligent radio pick-up unit (2) both can obtain from the electrical network of locality, also can adopt the sun-generated electric power power supply; Cable data harvester (3) receives intelligence to be had after the information that line detector (1) sends or after data acquisition device (4) receives the information that intelligent radio pick-up unit (2) sends, sends information center (8) to by network (7); Information center (8) positions the place that produces acoustic emission signal in the pipeline after combining the moment and processing result information that acoustic emission signal that each intelligent detection device sends produces, and then all information is deposited in database (9); Simultaneously, cable data harvester (3) and data acquisition device (4) also obtain instruction and unified real-time clock calibrating signal by network (7) from information center (8); User terminal (10) can call required duct size information from database (9) by network (7), and demonstration or printout on display separately.
2. underground pipeline corrosion as claimed in claim 1 and leakage intelligent on-line detection system, it is characterized in that, the acoustic emission signal that said intelligence has line detector (1) to send by oneself calibrate AE sensor (101) receiving pipeline (5), convert digital signal to through analog to digital conversion (102), after digital filtering and spectrum analysis (103) processing, send into CPU (central processing unit) (104) again and carry out pattern-recognition, operating mode classification and damage deciding grade and level; CPU (central processing unit) (104) deposits the moment and the result that acoustic emission signal produces in storer (105) on the one hand, in order to checking, by data acquisition bus interface (106) time and the result that acoustic emission signal produces is sent on the other hand; The real-time clock calibrating signal that CPU (central processing unit) (104) also receives instruction and clock (107) is calibrated by data acquisition bus interface (106); Intelligence has line detector (1) to obtain the required energy by power supply (108).
3. underground pipeline corrosion as claimed in claim 1 and leakage intelligent on-line detection system, it is characterized in that, the acoustic emission signal that said intelligent radio pick-up unit (2) sends by oneself calibrate AE sensor (201) receiving pipeline (5), convert digital signal to through analog to digital conversion (202), after digital filtering and spectrum analysis (203) processing, send into CPU (central processing unit) (204) again and carry out pattern-recognition, operating mode classification and damage deciding grade and level; CPU (central processing unit) (204) deposits the moment and the result that acoustic emission signal produces in storer (205) on the one hand, in order to checking, by wireless receiving and dispatching (206) time and the result that acoustic emission signal produces is sent on the other hand; The real-time clock calibrating signal that CPU (central processing unit) (204) also receives instruction and clock (207) is calibrated by wireless receiving and dispatching (206); Intelligent radio pick-up unit (2) obtains the required energy by power supply (208).
4. underground pipeline corrosion as claimed in claim 1 and leakage intelligent on-line detection system, it is characterized in that, the CPU (central processing unit) (302) of said cable data harvester (3) receives the moment and the processing result information that each intelligence has acoustic emission signal that line detector (1) sends to produce by data acquisition bus interface (301), information deposits storer (303) on the one hand, in order to checking, send to information center (8) by network interface (304) on the other hand, and receive instruction that information center (8) sends and the real-time clock calibrating signal that clock (305) is calibrated; Simultaneously, CPU (central processing unit) (302) also has line detector (1) to send instruction and real-time clock calibrating signal by data acquisition bus interface (301) to each intelligence; The required energy of cable data harvester (3) is provided by power supply (306).
5. underground pipeline corrosion as claimed in claim 1 and leakage intelligent on-line detection system, it is characterized in that, the CPU (central processing unit) (402) of said data acquisition device (4) receives the moment and the processing result information that acoustic emission signal that each intelligent radio pick-up unit (2) sends produces by wireless receiving and dispatching (401), information deposits storer (403) on the one hand, in order to checking, send to information center (8) by network interface (404) on the other hand, and receive instruction that information center (8) sends and the real-time clock calibrating signal that clock (405) is calibrated; Simultaneously, CPU (central processing unit) (402) also sends instruction and real-time clock calibrating signal by wireless receiving and dispatching (401) to each intelligent radio pick-up unit (2); The required energy of data acquisition device (4) is provided by power supply (406).
CNB2004100679108A 2004-11-05 2004-11-05 Intelligent on-line detection system for corrosion and leakage of underground pipeline CN100399019C (en)

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