CN207975487U - A kind of pipeline state inspection device - Google Patents

Abstract

The utility model 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

A kind of pipeline state inspection device

Technical field

The utility model belongs to pipeline inspection technology field, is related to a kind of for long range, full pipeline, buried feed pipe State parameter detection device in the pipe in road, specifically a kind of pipeline state inspection device.

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.

Utility model content

In view of the deficiencies of the prior art, the utility model provides a kind of pipeline state inspection device, shakes using with sound The carrier of dynamic resonance chamber, the sound that the high-sensitivity vibration sensor detection pipeline internal leakage carried using carrier inside is generated Vibration signal calculates carrier displacement distance and leakage point using the acceleration transducer and angular-rate sensor of carrier inside It sets, is realized pair 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 pipeline detection carrier.

The purpose of this utility model 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.

The beneficial effects of the utility model：Pipeline state inspection device provided by the utility model, leaks according to water supply line The time-frequency characteristics of noise and vibration data are placed with electricity using the spherical detectors with acoustical vibration resonant cavity inside detector Road plate is equipped with GPS/ Big Dippeves time service module, high precision timing crystal oscillator, supersonic generator, three axis accelerometer, angular speed meter And the components such as microphone, detector transport the flowing of medium with liquid in pipe and move, the acoustical vibration that pipe leakage generates Signal generates oscillator signal by the acoustical vibration resonant cavity in detector, is acquired by microphone and captures this oscillator signal, The detection for realizing pipe leakage obtains detector displacement distance using the three axis accelerometer and angular speed meter inside detector With leakage point position, ultrasonic pulse signal transmission is carried out by supersonic generator, is carried out using GPS/ Big Dipper time service modules The initial time service of system, combined high precision crystal timing oscillator, realization time synchronization, both can be to detections to carry out ultrasonic wave positioning distance measuring Device displacement distance and leakage point position are modified, and can also realize the real-time tracking positioning of detector itself.

Description of the drawings

The utility model is described in further detail in the following with reference to the drawings and specific embodiments.

Fig. 1 is the structural schematic diagram of the utility model metal shell upper shell.

Fig. 2 is the structural schematic diagram of the utility model metal shell lower housing.

Fig. 3 is the system schematic of the utility model.

Fig. 4 is the utility model Master control chip work flow diagram.

Fig. 5 is the utility model GPS/ Big Dipper time service module work flow diagrams.

Fig. 6 is the utility model pipeline conditions parameter acquisition flow chart.

Fig. 7 is the utility model detector operating state information acquisition flow chart.

Fig. 8 is the utility model supersonic generator work flow diagram.

Fig. 9 is the utility model data storage card work flow diagram.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts The all other embodiment obtained, shall fall within the protection scope of the present invention.

As shown in Figs. 1-2, the utility model provides a kind of pipeline state inspection device, including spheroidal metal shell, gold It is 65mm, wall thickness 1.5mm to belong to sheathing material to use 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, the specific work process of the utility model 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 utility model, it is special according to the time-frequency of water supply line leakage noise vibration data Sign, using the spherical detectors with acoustical vibration resonant cavity, circuit board is placed with inside detector, the GPS/ Big Dippeves is equipped with and awards When the components such as module, high precision timing crystal oscillator, supersonic generator, three axis accelerometer, angular speed meter and microphone, detection Device transports the flowing of medium with liquid in pipe and moves, and the sound vibration signal that pipe leakage generates is by the sound in detector Vibration resonance chamber and generate oscillator signal, by microphone acquire capture this oscillator signal, realize the detection of pipe leakage, utilize Three axis accelerometer inside detector and angular speed meter obtain detector displacement distance and leakage point position, pass through ultrasonic wave Generator carries out ultrasonic pulse signal transmission, and the initial time service of system, combined high precision are carried out using GPS/ Big Dipper time service modules Crystal timing oscillator realizes that duration synchronizes, both can be to detector displacement distance and leakage to carry out ultrasonic wave positioning distance measuring Point position is modified, and 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 in at least one of the utility model In embodiment or example.In the present specification, schematic expression of the above terms be not necessarily referring to identical embodiment or Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiments or example In can be combined in any suitable manner.

Above content is only to the utility model structure example and explanation, the technology people of affiliated the art Member makes various modifications or additions to the described embodiments or substitutes by a similar method, without departing from reality With novel structure or beyond the scope defined by this claim, all should belong to the protection range of the utility model.

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).