CN108317403A - A kind of pipeline state inspection device - Google Patents
A kind of pipeline state inspection device Download PDFInfo
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- CN108317403A CN108317403A CN201810085652.8A CN201810085652A CN108317403A CN 108317403 A CN108317403 A CN 108317403A CN 201810085652 A CN201810085652 A CN 201810085652A CN 108317403 A CN108317403 A CN 108317403A
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- 238000001514 detection method Methods 0.000 abstract description 12
- 239000013078 crystal Substances 0.000 abstract description 9
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- 239000007788 liquid Substances 0.000 abstract description 3
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 4
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- 238000005096 rolling process Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
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- 239000000463 material Substances 0.000 description 2
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- 239000008400 supply water Substances 0.000 description 2
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- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a kind of pipeline state inspection devices,Using the spherical detectors with acoustical vibration resonant cavity,Circuit board is placed with inside detector,It is equipped with GPS/ Big Dipper time service modules,High precision timing crystal oscillator,Supersonic generator,Three axis accelerometer,The components such as angular speed meter and microphone,Detector transports the flowing of medium with liquid in pipe and moves,The sound vibration signal that pipe leakage generates generates oscillator signal by the acoustical vibration resonant cavity in detector,It is acquired by microphone and captures this oscillator signal,Realize the detection of pipe leakage,Utilize the three axis accelerometer and angular speed meter inside detector,Obtain detector displacement distance and leakage point position,The initial time service of system is carried out using GPS/ Big Dipper time service modules,Combined high precision crystal timing oscillator carries out time synchronization and then realizes ultrasonic wave positioning distance measuring using supersonic generator,Both detector displacement distance and leakage point position can be modified,Also the real-time tracking positioning of detector itself can be realized.
Description
Technical field
The invention belongs to pipeline inspection technology field, it is related to a kind of for long range, full pipeline, buried water supply line
State parameter detection device, specifically a kind of pipeline state inspection device in pipe.
Background technology
Underground pipe network is the infrastructure of modern city indispensability, life, property and living environment of the pipeline accident to people
Cause huge threat.Pipeline is influenced by conveying operating mode, geographical environment, climate change, construction and artificial destruction,
And with the increase of service life, phenomena such as weld cracking, corrosion failure can be gradually appeared, to form leakage or air bag.
Therefore, leakage or the timely of air bag are found with positioning with important the defects of the burn into crackle of pipeline and caused by defect
Realistic meaning.
Leak detection technology based on traditional negative pressure wave method and flow equilibrium method be able to detect that in two test points it
Between water supply pipe leakage point, however, be accurately positioned not yet fine solution for leakage point, and when between two test points
There are when multiple leakage points or air bag, above-mentioned detection technique just can not accurately recognize these leakage points or air bag.It is examined in view of tradition
Survey technology can only effectively be detected compared with gross leak, helpless for minor leakage, and the loss of the latter is very important, together
When traditional sensing techniques misrepresent deliberately that misinformation probability is larger, it is huge to the monitoring cost of long pipe line for a long time, it is difficult to effectively implement.Base
In detection method in the pipe of the technologies such as magnetic flux, vortex be the method for detecting pipeline for having high accuracy, by being equipped with lossless inspection
Measurement equipment and corresponding data sampling and processing and the intelligent pig of storage system are run in the duct, to tube body carry out by
Grade scanning, realizes pipeline defect detection.This method accuracy of detection is higher, the disadvantage is that needing replacing phase when detection different-diameter pipeline
The pipe detector of diameter is answered, testing cost is higher, and in addition this method equipment therefor volume is larger, and operation shows slightly inconvenient.
Pipeline will produce sound and vibration when leaking generation, therefore, the high-precision sensor of tradition is positioned over pipeline
It is interior, and allow its can the free movement in pipeline, more accurate testing result not only can be obtained, inspection can also be reduced
Survey expense realizes huge economic benefit, reduces loss.
In the prior art, patent CN201110402319.3, by an outer diameter 100mm, wall thickness 8mm aluminium ball shells
Sound transducer is placed to be rolled in oil pipeline to achieve the purpose that detect Pipeline Leak.However, city supply water pipeline
Interior hydraulic pressure is generally between 0.15MPa~0.35MPa, and much smaller than pressure in oil pipeline, the leakage noise generated is especially
Minute leakage noise intensity is weaker, therefore the design of the shell wall thickness of detector, shell structure and sensitive parameter selection will be right
The acquisition of leakage signal has great influence.In addition, city supply water pipeline bifurcated is more, in-pipeline detector must have in real time with
Track positioning function.
Invention content
In view of the deficiencies of the prior art, the present invention provides a kind of pipeline state inspection devices, using humorous with acoustical vibration
Shake the carrier of chamber, the acoustical vibration for utilizing the high-sensitivity vibration sensor detection pipeline internal leakage that carrier inside is carried to generate
Signal calculates carrier displacement distance and leakage point position using the acceleration transducer and angular-rate sensor of carrier inside,
It is realized to pipe with the time synchronization ultrasonic wave positioning distance measuring scheme that High Precision Crystal Oscillator is combined using the GPS/ big-dipper satellite times
The real-time positioning of carrier is detected in road.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of pipeline state inspection device, including spheroidal metal shell, the metal shell include mutually matched upper casing
Body and lower housing, the upper shell form acoustical vibration resonant cavity, the acoustical vibration using shell and shell inner cylinder space
There are four staircase structural model, the fixed main control board of upper layer installation of the staircase structural model, institutes respectively for resonant cavity side circumference
State the fixed collecting circuit board of lower layer's installation of staircase structural model.
Further, the lower housing bottom is equipped with battery case, and the battery case both sides are equipped with for installing fixed battery
The card hole of strip.
Further, the lower housing side is equipped with the seal groove for installing waterproof rubber ring.
Further, for the main control board including being main controller chip, the collecting circuit board includes that three axis accelerate
Spend meter, angular speed meter, magnetometer, microphone, pressure gauge and thermometer.
Further, the three axis accelerometer, angular speed meter, magnetometer are all connected with Master control chip.
Further, the microphone, pressure gauge and thermometer connect ADC moulds by a filtering and amplifying circuit respectively
Block, the ADC module connect master controller chip.
Further, the Master control chip connects supersonic generator.
Further, the Master control chip connects GPS/ Big Dipper time service modules.
Further, the Master control chip connects data storage card.
Beneficial effects of the present invention：Pipeline state inspection device provided by the invention is vibrated according to water supply line leakage noise
The time-frequency characteristics of data are placed with circuit board using the spherical detectors with acoustical vibration resonant cavity inside detector, carry
GPS/ Big Dippeves time service module, high precision timing crystal oscillator, supersonic generator, three axis accelerometer, angular speed meter and Mike
The components such as wind, detector transport the flowing of medium with liquid in pipe and move, and the sound vibration signal that pipe leakage generates passes through
Acoustical vibration resonant cavity in detector and generate oscillator signal, passing through microphone acquisition captures this oscillator signal, realizes pipeline
The detection of leakage obtains detector displacement distance and leakage point using the three axis accelerometer and angular speed meter inside detector
Position carries out ultrasonic pulse signal transmission by supersonic generator, and it is initial to carry out system using GPS/ Big Dipper time service modules
Time service, combined high precision crystal timing oscillator, realize time synchronization to carry out ultrasonic wave positioning distance measuring, both can to detector move away from
It is modified from leakage point position, can also realize the real-time tracking positioning of detector itself.
Description of the drawings
Present invention is further described in detail in the following with reference to the drawings and specific embodiments.
Fig. 1 is the structural schematic diagram of metal shell upper shell of the present invention.
Fig. 2 is the structural schematic diagram of metal shell lower housing of the present invention.
Fig. 3 is the system schematic of the present invention.
Fig. 4 is Master control chip work flow diagram of the present invention.
Fig. 5 is GPS/ Big Dippeves time service module work flow diagram of the present invention.
Fig. 6 is inventive pipeline state parameter collecting flowchart figure.
Fig. 7 is detector operating state information acquisition flow chart of the present invention.
Fig. 8 is supersonic generator work flow diagram of the present invention.
Fig. 9 is data storage card work flow diagram of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
As shown in Figs. 1-2, the present invention provides a kind of pipeline state inspection device, including spheroidal metal shell, outside metal
It is 65mm, wall thickness 1.5mm that shell material, which uses aluminium alloy, metal shell internal diameter,.
Metal shell is divided into upper and lower hemisphere and is designed, including mutually matched upper shell and lower housing, and upper shell utilizes
Shell and shell inner cylinder space form acoustical vibration resonant cavity 801, to minute leakage sound vibration signal in pipeline into
Row capture.Respectively there are four staircase structural model 802, staircase structural model 802 is used for fixing 801 side circumference of acoustical vibration resonant cavity
Detector carrier inside circuit board, the wherein fixed main control board of upper layer installation of staircase structural model 802, staircase structural model 802
The fixed collecting circuit board of lower layer's installation.Staircase structural model 802 is equipped with installation threaded hole 804, respectively by bolt to master control
Circuit board and collecting circuit board carry out installation fixation.
Lower housing bottom is equipped with battery case 901, for placing to the battery of main control board and collecting circuit board power supply.Electricity
Slot 901 both sides in pond are equipped with the card hole 904 for installing fixed battery strip.Lower housing side is equipped with for installing waterproof rubber ring
Seal groove 902.
Fixation is bolted between upper shell and lower housing, upper shell is equipped with the first fixing threaded hole 803, lower housing
It is equipped with the second fixing threaded hole 903.
Wherein, main control board includes for main controller chip 101, filtering and amplifying circuit 108, ADC module 109, data
Storage card 110, GPS/ Big Dippeves time service module 111 and supersonic generator 112, collecting circuit board include three axis accelerometer
102, angular speed meter 103, magnetometer 104, microphone 105, pressure gauge 106 and thermometer 107.
As shown in figure 3, three axis accelerometer 102 connects Master control chip 101, angular speed meter 103, magnetic by I2C buses
Power meter 104 connects Master control chip 101 by SPI interface, wherein three axis accelerometer 102 and magnetometer 104 select ST public
The LSM303DLHC cake cores of department, the chip can acquire acceleration and magnetic field strength date simultaneously, and angular speed meter 103 selects ST public
I3G4250D cake cores are taken charge of, which is MEMS type sensor.
Three axis accelerometer 102, angular speed meter 103 and magnetometer 104 distinguish the operation shape of acquisition testing device in the duct
State information and magnetic force state information, and be output to Master control chip 101, Master control chip 101 combine speed displacement integration method and
Number of revolutions writing-method realizes detector displacement distance and location information inside pipeline.
Wherein, speed displacement integration method obtains speed by being integrated to 3-axis acceleration, then is integrated to speed,
Displacement of the detector in pipeline can be obtained into line home position amendment to integrated value.The realization process of number of revolutions writing-method
To be detected respectively to the peak value of 3-axis acceleration information and angular velocity information, six peak values are always obtained, removal is most
Big value and minimum value carry out mean value computation to remaining four values, and it is the detector rolling in pipeline time that acquired results, which calculate,
Number averagely rolls the period, according to detector rolling circumference L peace according to the rolling number calculating in fixed time period internal detector
Average speed V=L/T in cycle T calculating cycle is rolled, according to the detector rolling number of turns total in pipeline, you can must detect
Device displacement distance in pipeline.
Microphone 105, pressure gauge 106 and thermometer 107 connect ADC module by a filtering and amplifying circuit 108 respectively
109, microphone 105, pressure gauge 106 and thermometer 107 distinguish acquisition testing device institute through tube noise, overpressure in place of pipeline
With the analog signal of temperature in pipe, and it is output to ADC module 109 after filtering and amplifying circuit 108 is amplified and is filtered,
ADC module 109 connects master controller chip 101 by serial ports/parallel port, moulds such as temperature in tube noise, overpressure and pipe
Quasi- signal is converted into digital signal, and master controller chip 101, master controller core are transferred to by digital interfaces such as serial ports or parallel ports
Piece 101 judges pipeline conditions, finds the leak point of pipeline according to temperature data in tube noise, overpressure and pipe.
Master control chip 101 uses high-performance 32-bit microprocessor, is responsible for the communication and control of each function module in detector
System, the acquisition and processing of data, detector in the process of running, Master control chip 101 needs parallel processing multiple tasks, packet
It includes from multiple sensor gathered datas, obtains real-time time, data storage etc. uses reality to improve the efficiency of parallel task
When operating system.
Master control chip 101 connects supersonic generator 112 by driving circuit, and control supersonic generator 112 emits
Ultrasonic pulse signal, driving circuit are made of triode switch and booster, are controlled and are switched by pwm signal, transmitting ultrasound
Wave pulse signal.Supersonic generator 112 detector line into the process with Fixed Time Interval preferred 2-5 seconds send out ultrasonic wave
Pulse signal receives ultrasonic pulse signal using ultrasonic receiver, ultrasonic wave transmitted by supersonic generator 112
The time point of pulse signal can preset, its value is known for ultrasonic receiver, and ultrasonic wave receives
For device with supersonic generator 112 by synchronous at the GPS/ Beidou navigation times, ultrasonic receiver and supersonic generator 112 are each
Time continued synchronization in operational process is realized from using with money High Precision Crystal Oscillator 113, is surpassed in conjunction with received by ultrasonic receiver
The time of 112 emitted ultrasonic pulse signal of sound wave pulse signal time and supersonic generator can be obtained the transmitting-receiving time
Difference, according to the spread speed of this time difference combination ultrasonic wave in water come the location information and velocity information of detector, in fact
The ultrasonic wave positioning function of existing detector, the detector displacement distance and position calculate Master control chip 101 are modified.
Master control chip 101 connects data storage card 110 by I/O interface, and data storage card 110 selects large capacity SD card,
It is preferred that 8GB, UHS Class1 or higher, minimum writing speed 10M/s.Master control chip 101 carries out certainly data storage card 110
Inspection and initialization, Master control chip 101 load FATFS file system, receive the data of each sensor continuous collecting, delayed
It deposits, caching divides into A, the areas B Liang Ge, after an area is write completely, automatically switches to another buffer area, the buffer area number that will be filled with
In the data storage card 110 of document form write-in according to this, the buffer area is then emptied.
Master control chip 101 connects GPS/ Big Dippeves time service module 111 by UART interface, realizes that detector connects with ultrasonic wave
Receive the time synchronization between device.Master control chip 101 obtains satellite clock from GPS/ Big Dippeves time service module 111, to detector and
Ultrasonic receiver is initialized into row clock.GPS/ Big Dippeves time service module 111 selects the SKG12DT Big Dipper single modes of SKYLAB companies
Satellite time transfer module, it is possible to provide be up to the time service precision of ± 15ns, and the high sensitivity of -165dBm, GPS/ Big Dipper time service moulds
Block 111 obtains satellite clock after the power is turned on, starts to export clock information after clock stable, Master control chip 101 obtains clock letter
Clock initialization is completed after breath, Master control chip 101 sends instruction and GPS/ Big Dippeves time service module 111 is arranged after initialization
It is standby mode to reduce power consumption.
As shown in figures 4-9, specific work process of the invention is as follows：
After the power is turned on, Master control chip loads real time operating system to detector first, then to three axis accelerometer, angular speed
Meter, magnetometer, microphone, pressure gauge, thermometer and data storage card carry out self-test.After self-test, start the GPS/ Big Dippeves
Time service module obtains satellite clock, is initialized into row clock to detector and ultrasonic receiver, utilizes the high-precision of same money homotype
Degree crystal oscillator ensures to keep stringent clock to synchronize between detector and ultrasonic receiver, so as to use same time shaft pair
Data carry out processing analysis.
Detector is in pipeline in operational process, three axis accelerometer, angular speed meter and magnetometer interval acquisition testing device
Running state information and magnetic force state information, Master control chip use speed displacement integration method and number of revolutions writing-method, meter
Detector displacement distance and location information inside pipeline are calculated, meanwhile, judge the real-time attitude of detector.Microphone continuous acquisition
Tube noise data are moved for judging pipeline conditions, and according to the detector that Master control chip calculates inside pipeline
Dynamic distance and location information determine temperature in the leak point of pipeline, pressure gauge and thermometer continuous acquisition pipeline overpressure and pipe
Degrees of data, to carry out auxiliary judgment to pipeline conditions.
When system clock is whole second T, according to the real-time attitude of detector, when detector centre face and horizontal interfacial angle are small
When 10 °, start supersonic generator, continuously emit 5 ultrasonic pulse signals, frequency 40KHz is divided into 2-5 seconds.It is super
Acoustic receiver receives ultrasonic pulse signal in T+ time Δts.Ultrasonic receiver arrangement interval is no more than 1 km, surpasses
The propagation rate of sound wave in water is about 1400m/s, therefore ultrasonic receiver receives the time difference Δ t of pulse and is less than 1s,
According to the air line distance of receiving time difference detector and ultrasonic receiver, the detector that Master control chip calculates is moved
Distance and position are modified.
Detector is in work process, and the lasting gathered data of each sensor is simultaneously sent to Master control chip, main control
After device is cached, caching divides into A, the areas B Liang Ge, after an area is write completely, automatically switches to another buffer area, will be filled with
Buffer area data with document form be written data storage card in, then empty the buffer area.Weight during data acquire
The multiple above operation.
Pipeline state inspection device provided by the invention is adopted according to the time-frequency characteristics of water supply line leakage noise vibration data
With the spherical detectors with acoustical vibration resonant cavity, it is placed with circuit board inside detector, is equipped with GPS/ Big Dipper time service moulds
The components such as block, high precision timing crystal oscillator, supersonic generator, three axis accelerometer, angular speed meter and microphone, detector with
Liquid in pipe transports the flowing of medium and moves, and the sound vibration signal that pipe leakage generates is by the acoustical vibration in detector
Resonant cavity and generate oscillator signal, by microphone acquire capture this oscillator signal, realize the detection of pipe leakage, utilize detection
Three axis accelerometer inside device and angular speed meter obtain detector displacement distance and leakage point position, are occurred by ultrasonic wave
Device carries out ultrasonic pulse signal transmission, and the initial time service of system, combined high precision timing are carried out using GPS/ Big Dipper time service modules
Crystal oscillator realizes that duration synchronizes, both can be to detector displacement distance and leakage point to carry out ultrasonic wave positioning distance measuring
It sets and is modified, can also realize the real-time tracking positioning of detector itself.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the present invention
In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.
Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples to close
Suitable mode combines.
Above content is only to structure of the invention example and explanation, affiliated those skilled in the art couple
Described specific embodiment does various modifications or additions or substitutes by a similar method, without departing from invention
Structure or beyond the scope defined by this claim, is within the scope of protection of the invention.
Claims (9)
1. a kind of pipeline state inspection device, it is characterised in that：Including spheroidal metal shell, the metal shell includes phase interworking
The upper shell and lower housing of conjunction, the upper shell form acoustical vibration resonant cavity (801) using shell and shell inner cylinder space,
There are four staircase structural model (802), the staircase structural models (802) respectively for acoustical vibration resonant cavity (801) side circumference
The fixed main control board of upper layer installation, the fixed collecting circuit board of lower layer's installation of the staircase structural model (802).
2. a kind of pipeline state inspection device according to claim 1, it is characterised in that：The lower housing bottom is equipped with battery
Slot (901), battery case (901) both sides are equipped with the card hole (904) for installing fixed battery strip.
3. a kind of pipeline state inspection device according to claim 1, it is characterised in that：The lower housing side is equipped with and is used for
The seal groove (902) of waterproof rubber ring is installed.
4. a kind of pipeline state inspection device according to claim 1, it is characterised in that：Based on the main control board includes
Controller chip (101), the collecting circuit board include three axis accelerometer (102), angular speed meter (103), magnetometer
(104), microphone (105), pressure gauge (106) and thermometer (107).
5. a kind of pipeline state inspection device according to claim 4, it is characterised in that：The three axis accelerometer (102),
Angular speed meter (103), magnetometer (104) are all connected with Master control chip (101).
6. a kind of pipeline state inspection device according to claim 4, it is characterised in that：The microphone (105), pressure gauge
(106) and thermometer (107) connects ADC module (109), the ADC module by a filtering and amplifying circuit (108) respectively
(109) connection master controller chip (101).
7. a kind of pipeline state inspection device according to claim 4, it is characterised in that：The Master control chip (101) is even
Connect supersonic generator (112).
8. a kind of pipeline state inspection device according to claim 4, it is characterised in that：The Master control chip (101) is even
Connect GPS/ Big Dippeves time service module (111).
9. a kind of pipeline state inspection device according to claim 4, it is characterised in that：The Master control chip (101) is even
Connect data storage card (110).
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| CN201810085652.8A CN108317403A (en) | 2018-01-29 | 2018-01-29 | A kind of pipeline state inspection device |
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| CN201810085652.8A CN108317403A (en) | 2018-01-29 | 2018-01-29 | A kind of pipeline state inspection device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109000786A (en) * | 2018-08-01 | 2018-12-14 | 安徽康能电气有限公司 | A kind of conductive intelligent linearly coupled monitoring device |
| CN109737310A (en) * | 2019-01-29 | 2019-05-10 | 陕西泰诺特检测技术有限公司 | A kind of electromagnetic testing system and method for being detected inside pipeline |
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