CN111912906A - Sound source positioning method for storage tank flaw detection based on acoustic holography technology - Google Patents
Sound source positioning method for storage tank flaw detection based on acoustic holography technology Download PDFInfo
- Publication number
- CN111912906A CN111912906A CN201910400331.7A CN201910400331A CN111912906A CN 111912906 A CN111912906 A CN 111912906A CN 201910400331 A CN201910400331 A CN 201910400331A CN 111912906 A CN111912906 A CN 111912906A
- Authority
- CN
- China
- Prior art keywords
- acoustic emission
- acoustic
- storage tank
- sound source
- emission signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001093 holography Methods 0.000 title claims abstract description 23
- 238000005516 engineering process Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 title claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000002474 experimental method Methods 0.000 claims abstract description 13
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 5
- 230000004807 localization Effects 0.000 claims description 6
- 230000005284 excitation Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims 4
- 238000013480 data collection Methods 0.000 claims 1
- 238000010223 real-time analysis Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 238000004088 simulation Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/14—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
- G01N29/2437—Piezoelectric probes
Abstract
The invention provides a sound source positioning method for storage tank flaw detection based on an acoustic holography technology. The device comprises a sensor module, an acoustic emission acquisition module, a columnar iron barrel for simulating a port storage tank and upper computer positioning software. The sensor module adopts a piezoelectric sensor R15a, and can directly acquire an acoustic emission signal. The method comprises the steps of setting up an experiment, placing sensors on an iron bucket in different arrangement modes, connecting a plurality of channels of piezoelectric sensors with a signal processing module, conducting a lead breaking experiment near the sensors, enabling acoustic emission signals to reach a bus controller through the signal processing module, transmitting the acoustic emission signals to a CPU (central processing unit) mainboard through a PLE (programmable logic element) bus, obtaining and displaying the acoustic emission signals through AEwin, guiding acoustic emission signal data into sound source positioning software based on an acoustic holography technology, and positioning the position of an acoustic emission source to determine the state of a storage tank.
Description
Technical Field
The invention relates to the field of acoustic emission signal acquisition and petrochemical industry, in particular to a sound source positioning method for storage tank flaw detection based on an acoustic holography technology.
Background
With the development of national economy of China, the demand of people on petroleum is increasing day by day, and the application of petroleum storage tanks is also increasing gradually. The medium in the large storage tank has the characteristics of flammability, explosiveness and the like, so that the storage tank becomes a great hazard source. The port and wharf can be generally used as a gathering place of the storage tank and constructed along rivers or adjacent seas, so that once an accident occurs, on one hand, the ecological pollution problem can be caused, and on the other hand, the property and safety problem of people can be threatened. In recent years, the storage tank leakage problem causes great economic loss to enterprises.
As the use time of the port storage tank facility is increased, the corrosion degree of the storage tank is increased, accidents are easy to cause, and therefore, the outside of the operating atmospheric storage tank is required to be macroscopically inspected at least once every 5 years. The acoustic emission detection technology is used for detection and analysis, so that time can be saved, and cost can be reduced. The acoustic emission detection technology is an effective means for detecting and evaluating the safety of the storage tank, and is approved in all countries in the world. When the acoustic emission signal of the storage tank is obtained, the existing method is a passive ultrasonic method, namely, an excitation is given to obtain the waveform of the acoustic emission signal and the flaw detection position is analyzed. The invention adopts an active ultrasonic signal acquisition method.
The near-field acoustic holography technology is a sound source positioning identification technology based on acoustic radiation. The technology not only can realize the identification and positioning of the sound source, but also can predict the radiation characteristics of the sound source in the sound field. Therefore, the near-field acoustic holography technology can be applied to the research of the storage tank flaw detection system aiming at the characteristics of the damaged sound source of the port storage tank. The invention uses the self-developed sound source positioning software based on the acoustic holography to carry out flaw detection positioning.
Disclosure of Invention
The invention provides a sound source positioning method for flaw detection of a storage tank based on an acoustic holography technology, aiming at overcoming the defects of the prior art, wherein a piezoelectric sensor R15a is adopted to directly acquire an acoustic emission signal, and then sound source positioning software based on the acoustic holography technology is used for positioning the position of a sound source to determine the state of the storage tank.
The invention provides a sound source positioning method for storage tank flaw detection based on an acoustic holography technology.
The sensor module adopts a piezoelectric sensor R15a, and is mainly used for acquiring an acoustic emission signal of the internal rupture of the storage tank, so that the problem of the breakage and leakage of the storage tank can be acquired in advance.
The data acquisition unit of the acoustic emission acquisition module mainly comprises 32 acquisition channels, each acquisition channel is based on a DSP data processor, and 7 channels are selected for acoustic emission acquisition according to actual conditions. Its external interface mainly includes RS232/485, USB interface, digital I/O port and output port. A PCLE bus with high performance is provided.
The simulation iron barrel is a columnar iron barrel with the height of 0.3m and the radius of 0.15m, and is used for simulating a port storage tank to perform experiments. And the multi-channel sensors are arranged on the experimental iron barrel in different placement modes.
The upper computer positioning software is independently developed sound source positioning software based on an acoustic holography technology, and can determine the damage condition of the storage tank by positioning the position of a sound source.
The invention has the following advantages:
1. when the acoustic emission signal of the storage tank is obtained, the active ultrasonic signal obtaining method is adopted, namely the acoustic emission signal is directly obtained without excitation. The invention utilizes the piezoelectric sensor R15a to directly acquire acoustic emission signals.
2. The statistical optimal cylindrical surface near-field acoustic holography technology is applied to the storage tank flaw detection positioning research for the first time. The invention adopts the independently developed sound source positioning software based on the cylindrical surface near-field acoustic holography technology to carry out sound source positioning on the storage tank.
3. The acoustic emission acquisition system is based on an all-weather acoustic emission acquisition system, and the system can directly use AEwin software to display waveforms without using external plug-ins and without being influenced by external environment.
4. The piezoelectric sensor R15a has high sensitivity, good stability, consistency and reliability.
Drawings
FIG. 1 experimental construction diagram of storage tank
FIG. 2 is a diagram of an acoustic emission signal acquisition process
FIG. 3 sound source localization diagram
Detailed Description
To facilitate understanding of the present invention, reference will now be made to the accompanying drawings.
As shown in figure 1, the system is a storage tank experiment building diagram, and mainly comprises a sensor 1, an acoustic emission acquisition module 2, an iron barrel 3 for simulating a port storage tank and upper computer positioning software 4.
Step 1: before the experiment, simulation is carried out for a plurality of times under the same conditions as the parameters of the iron drum, and simulation debugging with different numerical values is carried out on simulation parameters such as the frequency range of a reconstruction source, the range of a reconstruction radius, the distance between a holographic surface and a reconstruction surface, the number value of holographic measuring points and the like so as to obtain the optimal positioning simulation effect, thereby establishing and perfecting the positioning software of the upper computer.
Step 2: the experiment is set up as shown in fig. 1, and a columnar iron bucket with the experimental device height of 0.3m and the radius of 0.15m is filled with oil to simulate a port storage tank filled with industrial oil. Place multichannel sensor on experiment iron ladle with different arrangement, need paint the couplant before placing, use the sticky tape again to fix the sensor to the iron ladle.
And step 3: the acoustic emission acquisition module is connected with the multi-channel sensor and the upper computer. The number of the acquisition channels is selected according to actual conditions, and 7 channels are selected for acoustic emission signal acquisition in the experiment. The overall data acquisition process mainly includes, as shown in fig. 2: the multi-channel sensor is connected with the signal processing module through the plurality of acquisition channels to acquire data, transmits acquired signals to the CPU mainboard through the bus controller and the PLE bus, acquires and displays a sound emission signal data diagram through AEwin, and then performs sound source positioning by using upper computer positioning software.
And 4, step 4: the method comprises the steps of setting up an experiment to carry out sound source positioning, carrying out lead breaking experiments on different placing modes of a sensor after the experiment is set up, comparing experimental data to obtain a better sensor placing mode, obtaining effective experimental data, and leading the effective experimental data into upper computer positioning software, so that a sound source positioning result in the lead breaking experiments is obtained. The sound source localization diagram is shown in fig. 3.
The invention relates to a sound source positioning method for flaw detection of a storage tank based on an acoustic holography technology, which comprises the steps of directly acquiring an acoustic emission signal by using a piezoelectric sensor, acquiring the acoustic emission signal by using an acoustic emission acquisition module, acquiring and displaying the acquired acoustic emission signal through AEwin software, and importing acoustic emission signal data into sound source positioning software based on the acoustic holography technology to position a sound source and judge the damage condition of the storage tank.
Claims (5)
1. A sound source positioning method for storage tank flaw detection based on an acoustic holography technology is characterized in that: the experimental module of setting up includes sensor module 1, acoustic emission collection module 2, be used for simulating the column iron ladle 3 and the host computer location software 4 of harbour storage tank, sensor module 1, what adopt is piezoelectric sensor R15a, mainly acquire the inside cracked acoustic emission signal that takes place of storage tank, acoustic emission collection module 2 is mainly the acoustic emission signal who is used for gathering the storage tank, host computer location software 4 is mainly used for fixing a position the acoustic emission source position, judge the storage tank situation.
2. The acoustic source localization method for tank inspection based on acoustic holography as claimed in claim 1, wherein: when the acoustic emission signal of the storage tank is obtained, the active ultrasonic signal obtaining method is adopted, namely the acoustic emission signal is directly obtained without excitation, and the acoustic emission signal is directly obtained by utilizing the piezoelectric sensor R15 a.
3. The acoustic source localization method for tank inspection based on acoustic holography as claimed in claim 1, wherein: the acoustic emission collection module that the experiment was adopted is all-weather acoustic emission collection system, and its data collection station mainly has 32 collection channels, and every collection channel all is based on DSP data processor, selects collection channel number according to actual conditions, and its external interface mainly includes RS232/485, USB interface, digital IO mouth, delivery outlet etc. possesses high performance's PCLE bus, can acquire the acoustic emission signal, real-time analysis acoustic emission signal waveform.
4. The acoustic source localization method for tank inspection based on acoustic holography as claimed in claim 1, wherein: the acoustic emission signal acquisition process comprises: the multi-channel sensor is connected with the signal processing module through a plurality of channels to acquire data, the acquired signals are transmitted to the CPU mainboard through the bus controller and the PLE bus, acoustic emission signals are acquired and displayed through AEwin, and then the acoustic emission signal data are guided into positioning software based on an acoustic holography technology to perform sound source positioning.
5. The acoustic source localization method for tank inspection based on acoustic holography as claimed in claim 1, wherein: and the upper computer sound source positioning software which is independently researched and developed and based on the cylindrical surface near-field acoustic holography technology is adopted to carry out sound source positioning so as to find out the damage problem of the storage tank in time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910400331.7A CN111912906A (en) | 2019-05-10 | 2019-05-10 | Sound source positioning method for storage tank flaw detection based on acoustic holography technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910400331.7A CN111912906A (en) | 2019-05-10 | 2019-05-10 | Sound source positioning method for storage tank flaw detection based on acoustic holography technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111912906A true CN111912906A (en) | 2020-11-10 |
Family
ID=73242975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910400331.7A Pending CN111912906A (en) | 2019-05-10 | 2019-05-10 | Sound source positioning method for storage tank flaw detection based on acoustic holography technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111912906A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5231866A (en) * | 1991-05-28 | 1993-08-03 | Dnv Industrial Services, Inc. | Acoustic leak detection system |
| US20090070048A1 (en) * | 2004-07-15 | 2009-03-12 | Stothers Ian Mcgregor | Acoustic structural integrity monitoring system and method |
| CN103323533A (en) * | 2013-05-15 | 2013-09-25 | 天津科技大学 | System and method for detecting plant diseases based on near field acoustic holography technology |
| CN103759812A (en) * | 2013-12-25 | 2014-04-30 | 广西科技大学 | Method for detecting non-stationary acoustic sources based on near-field acoustical holography technology |
| CN108629081A (en) * | 2018-04-02 | 2018-10-09 | 西安交通大学 | Surface Reconstruction of Sound Field method is equipped based on statistically optimal near-field acoustical holography used shell |
| CN109406637A (en) * | 2018-11-05 | 2019-03-01 | 中国计量大学 | A kind of experimental provision for horizontal tank corrosion leakage Acoustic Emission location |
| CN210322907U (en) * | 2019-05-10 | 2020-04-14 | 天津科技大学 | Acoustic emission signal acquisition system for flaw detection of storage tank |
-
2019
- 2019-05-10 CN CN201910400331.7A patent/CN111912906A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5231866A (en) * | 1991-05-28 | 1993-08-03 | Dnv Industrial Services, Inc. | Acoustic leak detection system |
| US20090070048A1 (en) * | 2004-07-15 | 2009-03-12 | Stothers Ian Mcgregor | Acoustic structural integrity monitoring system and method |
| CN103323533A (en) * | 2013-05-15 | 2013-09-25 | 天津科技大学 | System and method for detecting plant diseases based on near field acoustic holography technology |
| CN103759812A (en) * | 2013-12-25 | 2014-04-30 | 广西科技大学 | Method for detecting non-stationary acoustic sources based on near-field acoustical holography technology |
| CN108629081A (en) * | 2018-04-02 | 2018-10-09 | 西安交通大学 | Surface Reconstruction of Sound Field method is equipped based on statistically optimal near-field acoustical holography used shell |
| CN109406637A (en) * | 2018-11-05 | 2019-03-01 | 中国计量大学 | A kind of experimental provision for horizontal tank corrosion leakage Acoustic Emission location |
| CN210322907U (en) * | 2019-05-10 | 2020-04-14 | 天津科技大学 | Acoustic emission signal acquisition system for flaw detection of storage tank |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102706963B (en) | Stress wave nondestructive detection device for ancient tree/ancient building timber structure inner decay | |
| CN104965023B (en) | Multi-modal guided wave industrial pipeline diagnostic method | |
| CN103760243A (en) | Microcrack nondestructive detecting device and method | |
| CA1252555A (en) | Pressure vessel testing | |
| CN103728374B (en) | Underground engineering wall rock disaster non-drilled ultrasound wave can't harm method of real-time | |
| CN102944581B (en) | Method for monitoring structural damage of conduit offshore platform | |
| CN102901560A (en) | Safe comprehensive monitoring system for structure of offshore jacket platform | |
| CN106323385A (en) | Online detection of storage tank, assessment method and device | |
| CN105698012A (en) | Pipe flaw guided circumferential wave nondestructive testing method based on transverse-wave straight probes | |
| CN104391039A (en) | Storage tank bottom plate corrosion noncontact ultrasonic detection method based on dynamic wavelet fingerprint technology | |
| CN201262625Y (en) | Armored rope computer flaw detector | |
| CN103604868A (en) | Corrugated pipe grouting quality detection device and method based on synthetic aperture and information entropy | |
| CN210322907U (en) | Acoustic emission signal acquisition system for flaw detection of storage tank | |
| CN202159039U (en) | Ultrasonic guided wave detecting system of bottom board of oil storage tank | |
| CN109030497B (en) | Concrete structure crack automatic monitoring system | |
| CN203849178U (en) | Nondestructive detection system for grouting compactibility of pre-stressed duct of bridge | |
| CN101539540A (en) | Ultrasonic guided wave testing method of corrosion of partially implanted pole body of steel pipe pole | |
| CN203745428U (en) | Micro-crack nondestructive testing device | |
| CN202994735U (en) | Ultrasonic guided-wave detection system | |
| CN114942436A (en) | Tunnel lining disease identification method and system based on geological radar and deep learning | |
| CN101819182B (en) | Method for reconstructing defect shape in non-uniform medium | |
| CN202033157U (en) | Portable leak detector for leaked oil gas on base plate of oil tank | |
| CN206161053U (en) | Online test detection of storage tank and evaluation device | |
| CN111912906A (en) | Sound source positioning method for storage tank flaw detection based on acoustic holography technology | |
| CN108645914A (en) | CNG gas storage well sleeves detecting system and the comprehensive probe of CNG gas storage well sleeves detection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |