CN101270853A - Gas pipeline leakage remote detection device, method and system based on infrasonic wave - Google Patents
Gas pipeline leakage remote detection device, method and system based on infrasonic wave Download PDFInfo
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Abstract
The invention provides a remote detection device, a method and a system for the detection of the leakage of the natural gas pipeline, which are based on the infrasonic wave. The detection device comprises that an infrasonic wave sensor element which is mounted on the detecting natural gas pipeline detects the leakage infrasonic wave signal in the pipeline to produce the sensor data; a data processing element is coupled with the infrasonic wave sensor element to receive the sensor data, analyze the data, identify and process the leakage and produce the processing result data; a time sequence collection element is coupled with the data processing element to receive the synchronous time base signal and synchronize the time clock according to the synchronous time base signal; a communication interface element is coupled with the data processing element for the output of the sensor data and the processing result data; a display element is coupled with the data processing element for the display of the sensor data and the processing result data.
Description
Technical field
The invention relates to the natural gas line detection technique, is about the gas pipeline leakage detection technique specifically, especially about a kind of based on infrasonic gas pipeline leakage remote detection device, method and system.
Background technique
At present and the coming years, it is the peak period that China head builds apart from gas pipeline, estimate that newly-built length of pipeline will reach 1.2 ten thousand kilometers, build up import OAO Gazprom main line and branch line, the defeated pipeline in Qinghai rock gas east, transfering natural gas from the west to the east, transfering natural gas from the west to the east two wires and loyal military line, capital, Shan two wires interconnection and branch line.Formed in 2015: five horizontal strokes, two vertical, three stations, six storehouses, many sources of the gas of seven pipe networks, multi-user's air feed network.Yet gas pipeline leakage will cause serious consequences such as environmental pollution, combustion explosion, and will cause very big direct, indirect economic loss.
Relative ripe for the long-range leakage detection method of liquid conducting pipes such as crude oil, product oil and urban groundwater both at home and abroad at present, the off-line detecting technology application of natural gas leaking is more.And, be applicable to that the method and apparatus of gas pipeline leakage detection is demanded research urgently because of the distinctive strong compressibility of rock gas.
The Chinese invention patent application number is method and the device that has disclosed a kind of fluid-transporting tubing Leak testtion location in 9612100.1 the technological scheme, it utilizes with neuron network, pattern recognition the classification of pipeline operation conditions, wavelet transformation is suppressed influence of noise, gentlenesses such as dynamic calibration flowmeter error and foundation are applicable to are the waterpower heating power collective model of isothermal pipeline not, and the self study intellectuality is carried out accurate detection and location to the leakage of various pipelines.
The Chinese invention patent application number is that 99107241.3 technological scheme has disclosed a kind of fluid-transporting tubing leakage monitoring localization method and device, it is equipped with computer or smart instrumentation respectively at pipeline to be measured two ends, gather two ends flow and pressure signal, by transmission medium two ends are connected into the unified intelligent monitoring device of a cover, utilize pressure, changes in flow rate is calculated respectively, the differentiation radix of bringing in constant renewal in is differentiated leakage, with pipeline observed pressure ripple passing time is radix, with the actual measurement relation curve of pressure wave transmission speed and difference in flow leakage point is positioned.
The Chinese invention patent application number is that 200410019451.6 technological scheme has disclosed a kind of method that detects oil and gas pipeline leakage based on pressure signal, gather the pressure transmitter output value sequence under the non-stationary state, adopt batch method and recurrence facture to non-stationary signal conversion process in addition, steady pressure signal sequence with conversion adopts the Sequential Probability Ratio Test recurrence formula to calculate inspection parameter, when inspection parameter during, judge that then leakage has taken place pipeline greater than high alarm setting.
Prior art adopts the negative pressure sonic method to detect natural gas line, be easier to occur erroneous judgement, in order to solve the problem of erroneous judgement, the Chinese invention patent application number is that 200710097721.9 technological scheme has proposed a kind of conduit leakage detecting instrument based on dynamic low-frequency technology, dynamic pressure variable quantity to pipe leakage moment carries out dynamic response, improved testing precision, can distinguish and leak the sound wave signal.The disclosed content of above-mentioned patent is herein incorporated, with as prior art of the present invention.
The detection device of the prior art standard PC case that normally 19 inches 3U are high (is approximately 450mm * 132mm * 400mm), volume is bigger, and only has the execution function, does not have control, processing capacity, must link to each other with computer, come the control detection device by computer.
Summary of the invention
The object of the present invention is to provide a kind of based on infrasonic gas pipeline leakage remote detection device and system, overcome method the erroneous judgements that compressibility produced stronger such as existing suction wave and real-time model, solved the remote online identification problem of gas pipeline leakage because of rock gas has.
To achieve these goals, it is a kind of based on infrasonic gas pipeline leakage remote detection device that the embodiment of the invention provides, described device comprises: the infrasonic wave sensing unit, be installed on the natural gas line to be detected, leakage infrasonic wave signal in the pipeline is detected, generate sensing data; Data processing unit is coupled to described infrasonic wave sensing unit, receives sensing data, carries out data analysis and handles with leaking identification, generates the processing result data; The sequential collecting unit is coupled to described data processing unit, receives synchronous time-base signal, and according to described synchronous time-base signal synchronised clock; Communications interface unit is coupled to described data processing unit, is used to export described sensing data and processing result data; Display unit is coupled to described data processing unit, is used to show described sensing data and processing result data.
To achieve these goals, it is a kind of based on infrasonic gas pipeline leakage remote detecting system that the embodiment of the invention also provides, described system comprises: a plurality of based on infrasonic gas pipeline leakage remote detection device, described detection device receives acquisition, decompose acquisition and acquisition parameter is set, send sensing data and processing result data; Master station couples described detection device, sends acquisition, receives sensing data and processing result data that described detection device sends.
To achieve these goals, it is a kind of based on infrasonic gas pipeline leakage remote detecting method that the embodiment of the invention also provides, and described method comprises: the step that sends acquisition; Receive acquisition, decompose acquisition and the step of acquisition parameter is set; Receive synchronous time-base signal, and according to the step of synchronous time-base signal synchronised clock; Receive the infrasonic wave signal, the step of output sensing data; Receive sensing data, carry out data analysis and handle, the step that generates the processing result data and sensing data and processing result data are sent with leaking identification.
The beneficial effect of the embodiment of the invention is, by provided by the invention a kind of based on infrasonic gas pipeline leakage remote detection device and system, and the leakage of detection natural gas line that can be early stage, accurate and long-range.By linux embedded system and arm chip, can accelerate development rate, effectively reduce cost.Not only have the execution function, also have control and processing capacity, needn't come the control detection device by computer.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute limitation of the invention.In the accompanying drawings:
Fig. 1 is the infrasonic gas pipeline leakage remote detection device of a present invention module map;
Fig. 2 is another embodiment's of the infrasonic gas pipeline leakage remote detection device of the present invention module map;
Fig. 3 is another embodiment's of the infrasonic gas pipeline leakage remote detection device of the present invention module map;
Fig. 4 is another embodiment's of the infrasonic gas pipeline leakage remote detection device of the present invention module map;
Fig. 5 is another embodiment's of the infrasonic gas pipeline leakage remote detection device of the present invention module map;
Fig. 6 is another embodiment's of the infrasonic gas pipeline leakage remote detection device of the present invention module map;
Fig. 7 is the schematic representation of another embodiment's of the infrasonic gas pipeline leakage remote detection device of the present invention communications interface unit 107;
Fig. 8 is an embodiment's of the infrasonic gas pipeline leakage remote detecting system 800 of the present invention network topological diagram;
Fig. 9 is the front panel schematic representation of the infrasonic gas pipeline leakage remote detection device of the present invention;
Figure 10 is the rear board interface schematic representation of the infrasonic gas pipeline leakage remote detection device of the present invention;
Figure 11 is an embodiment's of the infrasonic gas pipeline leakage remote detecting method of the present invention flow chart;
Figure 12 is another embodiment's of the infrasonic gas pipeline leakage remote detecting method of the present invention flow chart.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer,, the present invention is described in further details below in conjunction with mode of execution and accompanying drawing.At this, exemplary embodiment of the present invention and explanation thereof are used to explain the present invention, but not as a limitation of the invention.
The embodiment of the invention provides a kind of infrasonic gas pipeline leakage remote detection device.The present invention is described in detail below in conjunction with accompanying drawing.
Fig. 1 is the infrasonic gas pipeline leakage remote detection device of a present invention module map, and as shown in Figure 1, gas pipeline leakage remote detection device 100 comprises:
Infrasonic wave sensing unit 101, be installed on the natural gas line to be detected, leakage infrasonic wave signal in the pipeline is detected, the characteristic spectra that detects is 0.5Hz-20Hz, in the present embodiment, infrasonic wave sensing unit 101 can comprise a frequency resonance sensor or a pressure transducer, detect the infrasonic wave analogue signal after, transfer analogue signal to digital signal by the accurate phase-locked analog-digital converter of 24bit, and digital signal is exported;
In the present embodiment, data processing unit 103 is based on the ARM926 framework, used the AT91SAM9263 device of Atmel company, and use selects for use ultra-large FPGA to realize collection, arrangement, correction, the buffer memory of data, make the core board of detection device small-sized, has only 115mm * 132mm (sandwich plate structure), infrasonic gas pipeline leakage remote detection device 100 volumes are effectively dwindled, and having alleviated weight, the volume of infrasonic in the present embodiment gas pipeline leakage remote detection device 100 is about 144mm * 144mm * 150mm.
In the present embodiment, sequential collecting unit 105 can be a GPS sequential collecting unit, and what select for use is the high sensitivity GPS parts, and sensitivity is near theoretical limit, and what core control was adopted is ARM9 nuclear.Main pulse during benchmark that the GPS parts send, error is less than 1 μ s, detection device 100 per seconds are received a pulse, because the GPS synchronous satellite is apart from 36000 kilometers of earth surfaces, are equidistant substantially tens test nodes on the petroleum pipeline with respect to thousands of kilometers.That is to say tens test nodes on the pipeline when synchronization receives the benchmark of GPS main pulse (absolute error is less than 1 μ s.Because gps signal is many stars integrated correction mechanism), use the clock starting point of the forward position sync detection device 100 of this pulse then simultaneously.
Infrasonic gas pipeline leakage remote detection device 100 of the present invention uses the Linux embedded OS, compares with Linux, and the VxWorks cost is higher and not open; Windows CE copyright royalty higher (hundreds of units are collected in the installation of each equipment) and not open; μ COS is owing to be a bare nucleus, and the whole robustness of implant system is bad, and the transplanting workload is huge, and overall performance is bad.Infrasonic gas pipeline leakage remote detection device 100 has been realized the miniaturization of autonomous device and equipment, has stronger software systems simultaneously, more software function, more economical equipment cost, development rate faster, bug still less.
Fig. 2 for another embodiment of the infrasonic gas pipeline leakage remote detection device of the present invention schematic representation, as shown in Figure 2, gas pipeline leakage remote detection device 200 also comprises a pair of torsion circle unit 111, two torsion circles unit 111 is coupled to infrasonic wave sensing unit 101 and data processing unit 103, be used to control described infrasonic wave sensing unit 101 and alternately gather sensing data, it is seamless to guarantee to gather signal, can make the frequency acquisition can be up to 32KHz, more general 1KHz acquisition system is enhanced, and makes little leak diagnostics become possibility.Remaining part and the part among Fig. 1 among Fig. 2 are similar, so do not repeat them here.
Fig. 3 is another embodiment's of the infrasonic gas pipeline leakage remote detection device of the present invention schematic representation, as shown in Figure 3, gas pipeline leakage remote detection device 300 also comprises a data buffer storage unit 113, data buffer storage unit 113 is coupled to described infrasonic wave sensing unit 101, sequential collecting unit 105 and data processing unit 103, receives sensing data that infrasonic wave sensing unit 101 the sends row cache of going forward side by side.It is that each frame data in the buffer memory add synchronous time-base signal that data buffer storage unit 113 also provides synchronous time-base signal according to sequential collecting unit 105.Remaining part and the part among Fig. 1 among Fig. 3 are similar, so do not repeat them here.
Fig. 4 is another embodiment's of the infrasonic gas pipeline leakage remote detection device of the present invention module map, as shown in Figure 4, gas pipeline leakage remote detection device 400 comprises: infrasonic wave sensing unit 101, data processing unit 103, sequential collecting unit 105, communications interface unit 107, display unit 109 and data storage element 115, in the present embodiment, data storage cell 115 is coupled to described data processing unit 103, is used to store sensing data and the processing result data that data processing unit 103 sends.Remaining part and the part among Fig. 1 among Fig. 4 are similar, so do not repeat them here.
Fig. 5 is another embodiment's of the infrasonic gas pipeline leakage remote detection device of the present invention module map, as shown in Figure 5, gas pipeline leakage remote detection device 500 also comprises a mutual control unit 117, is coupled to data processing unit 103, is used to be provided with acquisition.Because detection device 500 itself has operation system and processor, therefore every detection device all can be by mutual control unit 117 independent controls, as can independently carrying out Leak testtion, visualization display, acoustooptic alarm.Remaining part and the part among Fig. 1 among Fig. 5 are similar, so do not repeat them here.
Fig. 6 is another embodiment's of the infrasonic gas pipeline leakage remote detection device of the present invention module map, as shown in Figure 6, be different from gas pipeline leakage remote detection device 100 shown in Figure 1, comprise a plurality of sensing units in the gas pipeline leakage remote detection device 600, comprising infrasonic wave sensing unit 101, pressure sensitive unit 603, flow sensing unit 605, valve state sensing unit 607, pump state sensing unit 609, PID (automatic regulating valve) state sensing unit 611, each sensing unit is installed on the natural gas line to be detected, to the leakage infrasonic wave signal in the pipeline, the pipeline pressure data, the pipeline flow data, the valve status data, the pump status data detects, and generates sensing data; Data processing unit 103 couples with each sensing unit, receives sensing data, carries out data analysis and handles with leaking identification, generates the processing result data at last.Remaining part in the gas pipeline leakage remote detection device 600 is identical with detection device shown in Figure 1 100, so do not repeat them here.
Fig. 7 is the schematic representation of another embodiment's of the infrasonic gas pipeline leakage remote detection device of the present invention communications interface unit 107, as shown in Figure 7, communications interface unit 107 comprises NIM Network Interface Module 701, RS232 Interface Module 703 and USB interface 705 modules, and wherein NIM Network Interface Module 701 is used to connect network; RS232 Interface Module 703 is used for field computer mutual; USB interface 705 modules are used for field data and extract.
Fig. 8 is an embodiment's of the infrasonic gas pipeline leakage remote detecting system 800 of the present invention network topological diagram, as shown in Figure 8, gas pipeline leakage remote detecting system 800 comprises: a plurality of gas pipeline leakage remote detection detection devices 100, described detection device 100 receives acquisition, decompose acquisition and acquisition parameter is set, send sensing data and processing result data; Master station 801 couples all detection devices 100, sends acquisition, receives sensing data and processing result data that described detection device 100 sends.
Fig. 9 is the front panel schematic representation of the infrasonic gas pipeline leakage remote detection device of the present invention, as shown in Figure 9, gas pipeline leakage remote detection device 900 comprises a touch control type LCD display screen 901, be used to receive user's input command and show various information, comprise showing sensing data, data processed result etc.; Detection device 900 lower right corner have three quick bottons 903,905 and 907, can be endowed different shortcut functions as required, in the present embodiment, button 903 be used for cursor on move, button 905 is used for moving down of cursor, and button 907 is used to realize operations such as the affirmation of leakage alarm point and cancellation.
Figure 10 is the rear board interface schematic representation of the infrasonic gas pipeline leakage remote detection device of the present invention, and as shown in figure 10, gas pipeline leakage remote detection device 900 comprises: sensing unit interface 909 is used to connect sensing unit; Network interface 911 is used for detection device 900 is linked to each other with network; RS232 interface 913 is used for detection device 900 is connected with portable computer; USB interface 915 is used for extracting data from detection device 900; GPS interface 917 is used for detection device 900 is linked to each other with gps receiver; And safty device 919, switch 921 and power interface 923.
Figure 11 is an embodiment's of the infrasonic gas pipeline leakage remote detecting method of the present invention flow chart, and shown in Fig. 1 and 11, the gas pipeline leakage remote detecting method comprises the steps:
Step 1101, master station 801 connects all detection devices 100, and sends acquisition;
Step 1102, detection device 100 receives the acquisition that master station 801 sends, and decomposes acquisition and acquisition parameter is set;
Step 1103, sequential collecting unit 105 receives synchronous time-base signal, and according to the clock of synchronous time-base signal sync detection device 100;
Step 1104, infrasonic wave sensing unit 101 receives the infrasonic wave signal, the output sensing data;
Step 1105, data processing unit 103 receives sensing data, carries out data analysis and handles with leaking identification, generates the processing result data and sensing data and processing result data are sent to master station 801.
Figure 12 is another embodiment's of the infrasonic gas pipeline leakage remote detecting method of the present invention flow chart, and shown in Fig. 5 and 12, the gas pipeline leakage remote detecting method comprises the steps:
Compared with prior art, the invention has the beneficial effects as follows: but remote online detects the leakage of natural gas line, based on the ARM926-Linux embedded OS, gather in the ring synchronously at gps data, it is phase-locked to carry out 16 passage 24bit precisions, realized detecting zero phase-shift, the zero lag of data, made Location accuracy reach best and many heat transfer agents fusion the bests gas pipeline leakage point.Volume is little, in light weight, is convenient to install and secondary development.Have control and processing capacity, needn't come the control detection device by computer.
Above-described embodiment; purpose of the present invention, technological scheme and beneficial effect are further described; institute is understood that; the above only is the specific embodiment of the present invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. one kind based on infrasonic gas pipeline leakage remote detection device, it is characterized in that described device comprises:
The infrasonic wave sensing unit is installed on the natural gas line to be detected, and the leakage infrasonic wave signal in the pipeline is detected, and generates sensing data;
Data processing unit is coupled to described infrasonic wave sensing unit, receives sensing data, carries out data analysis and handles with leaking identification, generates the processing result data;
The sequential collecting unit is coupled to described data processing unit, receives synchronous time-base signal, and according to described synchronous time-base signal synchronised clock;
Communications interface unit is coupled to described data processing unit, is used to export described sensing data and processing result data;
Display unit is coupled to described data processing unit, is used to show described sensing data and processing result data.
2. as claimed in claim 1ly it is characterized in that based on infrasonic gas pipeline leakage remote detection device described device also comprises:
Two torsion circles unit is coupled to described infrasonic wave sensing unit, is used to control described infrasonic wave sensing unit and alternately gathers sensing data.
3. as claimed in claim 1ly it is characterized in that based on infrasonic gas pipeline leakage remote detection device described device also comprises:
Data buffer storage unit is coupled to described infrasonic wave sensing unit and sequential collecting unit, and sensing data is carried out buffer memory.
4. as claimed in claim 1ly it is characterized in that based on infrasonic gas pipeline leakage remote detection device described device also comprises:
Data storage cell is coupled to described data processing unit, is used to store described sensing data and processing result data.
5. as claimed in claim 1ly it is characterized in that based on infrasonic gas pipeline leakage remote detection device described device also comprises:
Mutual control unit is coupled to described data processing unit, is used to be provided with acquisition.
6. one kind based on infrasonic gas pipeline leakage remote detecting system, it is characterized in that described system comprises:
A plurality of detection devices as claimed in claim 1, described detection device receives acquisition, decomposes acquisition and acquisition parameter is set, and sends sensing data and processing result data;
Master station couples described detection device, sends acquisition, receives sensing data and processing result data that described detection device sends.
7. as claimed in claim 6ly it is characterized in that based on infrasonic gas pipeline leakage remote detecting system described detection device also comprises:
Two torsion circles unit is coupled to described infrasonic wave sensing unit, is used to control described infrasonic wave sensing unit and alternately gathers sensing data.
8. as claimed in claim 6ly it is characterized in that based on infrasonic gas pipeline leakage remote detecting system described detection device also comprises:
Data buffer storage unit is coupled to described infrasonic wave sensing unit and sequential collecting unit, and sensing data is carried out buffer memory.
9. as claimed in claim 6ly it is characterized in that based on infrasonic gas pipeline leakage remote detecting system described detection device also comprises:
Data storage cell is coupled to described data processing unit, is used to store described sensing data and processing result data.
10. as claimed in claim 6ly it is characterized in that based on infrasonic gas pipeline leakage remote detecting system described detection device also comprises:
Mutual control unit is coupled to described data processing unit, is used to be provided with acquisition.
11. one kind based on infrasonic gas pipeline leakage remote detecting method, it is characterized in that described gas pipeline leakage remote detecting method comprises:
Send the step of acquisition;
Receive acquisition, decompose acquisition and the step of acquisition parameter is set;
Receive synchronous time-base signal, and according to the step of synchronous time-base signal synchronised clock;
Receive the infrasonic wave signal, the step of output sensing data;
Receive sensing data, carry out data analysis and handle, the step that generates the processing result data and sensing data and processing result data are sent with leaking identification.
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