CN202442998U - Acoustic emission detecting instrument without connecting wires - Google Patents
Acoustic emission detecting instrument without connecting wires Download PDFInfo
- Publication number
- CN202442998U CN202442998U CN2012200096458U CN201220009645U CN202442998U CN 202442998 U CN202442998 U CN 202442998U CN 2012200096458 U CN2012200096458 U CN 2012200096458U CN 201220009645 U CN201220009645 U CN 201220009645U CN 202442998 U CN202442998 U CN 202442998U
- Authority
- CN
- China
- Prior art keywords
- sensor
- calibrate
- acoustic emission
- detector
- storage tank
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model relates to an acoustic emission detecting instrument without connecting wires. In a ferromagnetic housing with good magnetic conduction performance, an acoustic emission sensor, a signal acquisition and processing unit, a power supply unit and a transmission unit are sequentially connected, and the external connecting wires are not required, so that the problems of signal interference, equipment failure and the like caused by the external connecting wires can be overcome. The sensor is in close contact with a wall plate of an oil storage tank under the double actions of elastic force of a spring and attraction power of a magnet and a good coupling effect can be achieved. An adjustable triangular support can overcome the impacts of gravity of the detecting instrument, support the detecting instrument to be stabilized at the set height, enable the detecting instrument to be positioned in the same plane and reduce the positioning error of the acoustic emission detecting instrument against corrosion leakage detection of the tank bottom of the oil storage tank.
Description
Technical field
The utility model relates to a kind of the cannot-harm-detection device that is used to detect vertical steel storage tank bottom corrosion seepage situation, especially a kind of acoustic emission detector of exempting from line-connection type.
Background technology
The base plate of vertical steel storage tank directly contacts with storage medium with tank base, and the installation site is hidden, so the corrosion condition of storage tank base plate is difficult for being detected, difficulty and the workload of implementing detection are also relatively large.Tradition storage tank base plate lossless detection method has infiltration detection, magnetic detection, Magnetic Flux Leakage Inspecting, EDDY CURRENT, ultrasound examination etc., and these methods all need be soared, cleaned the storage, and can't under the oil storage state, the corrosion situation to storage tank detect.Acoustic emission can overcome the shortcoming of traditional storage tank lossless detection method; A series of complicated processes such as it need not pass through and soar, cleaning; Just can realize the corrosion situation of detection storage tank real-time; Be a kind of online, efficient and economic lossless detection method, have boundless application prospect.
At present; The acoustic emission instrument is divided into two kinds of fundamental types substantially; Be single channel acoustic emission detector and multiple channel acousto emissive source positioning analysis system, content sees " Dynamic Non-Destruction Measurement and application thereof (second edition) " that Beijing Science Press 2010 publishes, Zhang Junzhe is outstanding for details.The single channel acoustic emission detector is made up of calibrate AE sensor and signal acquisition module, and signal acquisition module comprises prime amplifier, wave filter, main amplifier and A/D converter etc.Be fixed on calibrate AE sensor on the storage tank wallboard with the magnetic deck during detection, couple together calibrate AE sensor and acquisition module with signal wire then, carry out online detection.The hyperchannel acoustic emission detection system is to make integrated circuit board to signals collecting and processing module to be installed in the detector main frame, and main frame links to each other with computing machine, and the polylith integrated circuit board can be installed, and expands to many passages; Computing machine installation and measuring analytic system software carries out real-time analysis to the data of gathering.During detection; Computing machine and detector main frame are placed near the Electrical Safety of storage tank, the smooth place of physical features; Be fixed on calibrate AE sensor on the storage tank wallboard with the magnetic deck; Each calibrate AE sensor all is connected on the corresponding sense channel through signal wire, detects then and analyzes.
No matter being to use the single channel detector still is the multi-channel detection system, all there is the situation of outer signal line, signal wire is exposed and receives the interference of neighbourhood noise easily, causes the acquired signal distortion; And signal wire is relatively fragile, is exposed to the outside and damages easily, influences detector and normally uses; Compare with the single channel detector, the needed signal wire of multi-channel detection system is longer, and the work of when detecting, arranging and removing the take-up cable is very numerous and diverse, occurs the cable communication failure sometimes and influences the continuation of detected activity.
Summary of the invention
In order to overcome that still there is the outer signal line in the single channel acoustic emission detector and the problem brought; A kind of line-connection type acoustic emission detector of exempting from of the utility model design; This detector adopts the integration design, exempts the outside line of instrument, uses Radio Transmission Technology to carry out data transmission.
The utility model solves the technical scheme that its technical matters adopted: a kind of acoustic emission detector; In the good shell of magnetic shield performance, calibrate AE sensor, signals collecting are installed in detector inside with processing unit, power supply unit and transmission unit, need not aerial lug; It is characterized in that: calibrate AE sensor is installed in the detector front end; Under the double action of spring force and magnetic pull, closely contact with the storage tank wallboard, reach good coupling effect; The adjustable type tripod can be adjusted the setting height(from bottom) of calibrate AE sensor, makes all calibrate AE sensor places at grade, can also keep the coupling of calibrate AE sensor and storage tank wallboard good, plays the effect of stable detection appearance; The detector shell uses phenoplast to make, with weight reduction, reduce cost.Detector is made up of calibrate AE sensor unit, signals collecting and processing unit, power supply unit, wireless transmission unit four parts.The calibrate AE sensor unit is positioned at the front end of detector, and perforate can make calibrate AE sensor expose in the middle of the front-end protection lid, is inlaid with magnet on every side; Calibrate AE sensor is placed in the deck, and deck links to each other with separation layer through spring, and the calibrate AE sensor deck is fixed on the separation layer of housing with spring; Calibrate AE sensor embeds deck after inserting good plug, passes the middle circular hole of front-end protection lid and contacts with the storage tank wallboard, because the elastic force effect of spring; Surface of contact can highlight; Under the double action of spring force and magnetic pull, calibrate AE sensor closely contacts with the storage tank wallboard, reaches good coupling effect.Detector front-end protection lid can take off, and is convenient to change calibrate AE sensor.The separation layer back is signals collecting and processing unit, power supply unit and wireless transmission unit successively, and the thin metal layer that one deck is made by ferrimagnet is lining in inner surface of outer cover, avoids magnetic field of magnets to influence these unit operate as normal, plays the effect of magnetic shielding.Signals collecting and processing unit are made up of prime amplifier module, filter module, main amplifier module, waveform acquisition and data memory module; Power supply unit is made up of one group of rechargeable battery; The detector rear end is a wireless transmission unit, adopts between technology of infrared transmission and the computing machine and carries out synchronization timing and data transmission.Influence the degree of coupling of calibrate AE sensor and storage tank wallboard in order to eliminate the detector self gravitation; Use the adjustable type tripod to support detector; Detector is fixed on the adjustable type tripod through sleeve, is carved with scale on the centre strut of adjustable type tripod, setting height(from bottom) that can clear and definite calibrate AE sensor; Calibrate AE sensor is closely contacted with the storage tank wallboard; Adjustment calibrate AE sensor height that again can be quantitative makes all calibrate AE sensors be in same plane, and stablizes motionless.
The beneficial effect of the utility model is that the design of exempting from line-connection type is integrated in one calibrate AE sensor and signals collecting and processing unit, signal interference and the instrument failure problem of avoiding aerial lug to bring; The design of adjustable type tripod can be adjusted the setting height(from bottom) of calibrate AE sensor, makes all calibrate AE sensor places at grade, and it is good to keep being coupled between calibrate AE sensor and the storage tank wallboard, plays the effect of stable support.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is the detector agent structure synoptic diagram of the utility model.
Fig. 2 is the detector scheme of installation of the utility model.
Fig. 3 is the data transmission procedure synoptic diagram of the utility model.
Fig. 4 is the application example synoptic diagram of the utility model.
Embodiment
In Fig. 1, the front-end protection lid 3 that is inlaid with magnet 2 links to each other with housing 6 with thread forms, and housing 6 is divided into cup and back chamber by separation layer 7.Calibrate AE sensor unit 21 is positioned at the cup of housing 6, is made up of calibrate AE sensor 1, deck 17 and spring 18.Be nested on the deck 17 after calibrate AE sensor 1 is inserted good plug 5, deck 17 links to each other with spring 18, is fixed on the separation layer 7.Have circular holes in the middle of the front-end protection lid 3, can fixed sound emission sensor 1, also can take off front-end protection lid 3, change calibrate AE sensor 1.Inside surface in chamber, housing 6 back is lined with the very thin magnetic masking layer of one deck 13; It is made by ferrimagnet; Signals collecting and processing unit 22, power supply unit 23 and wireless transmission unit 24 to being positioned at chamber, housing 6 back play magnetic screening action, avoid these unit operate as normal of influence of magnetic field.Signal wire 4 sees through separation layer 7 and links to each other with processing unit 22 with signals collecting, and this unit is made up of prime amplifier module 8, filter module 9, main amplifier module 10, waveform acquisition and data memory module 11; Power supply unit 23 is made up of 3 rechargeable batteries 12, through 20 pairs of each module for power supply of front of power lead; Wireless transmission unit 24 is made up of infrared transmission interface 15 and infrared butt joint window 16; Infrared transmission interface 15 is installed in housing 6 backmost; Infrared butt joint window 16 is inlayed and is installed in the rear end over cap 14, and rear end over cap 14 and housing 6 link to each other with thread forms.
At Fig. 2 (a) with (b), detector is cylindrical, and sleeve 25 firmly is stuck on the sleeve draw-in groove 19 on the detector, uses screw to link to each other with the pillar 26 of band scale, and connecting portion can rotate flexibly, is convenient to adjust the angle of detector.Adjustable type tripod 28 is positioned on the ground, and detector is had calibrate AE sensor 1 one ends towards the storage tank direction, after adjustment pillar 26 makes detector be in the height of requirement, and tighten the screws knob 27.So just can all be fixed on sustained height to each detector of participating in detected activity, guarantee that calibrate AE sensor is in same plane; In addition, can also prevent that calibrate AE sensor 1 is contacted with the storage tank wallboard is not tight because of detector self gravitation influence, keep good coupling between the two.
In Fig. 3 (a); Acoustic emission detector is placed on 29 li in data transmission case; The infrared butt joint window 16 of each detector aligns with the infrared window 30 that docks on data transmission case 29 lids, and there is a USB interface 31 on data transmission case 29 lid right sides, are used to connect computing machine.In Fig. 3 (b); Data transmission case 29 is connected with computing machine 33 through usb data line 32; Can synchronous clock, the geocoding of all detectors, the time that starts and stop to detect etc. be set downwards through computing machine 33, also can upwards be transferred to computing machine 33 to the Wave data that each detector collects.
In Fig. 4, enumerated out the distribution situation of 6 detectors.Begin counterclockwise from passing in and out oily short tube 34; Around evenly distributing in 36 1 weeks of storage tank wallboard; Confirm the installation site of detector, according to from 1# to 6# number consecutively, the annex of as far as possible avoiding storage tank is as passing in and out oily short tube 34, manhole 37 etc.; Detector lies in a horizontal plane on the oil storage tank foundation 35, and front end is close to storage tank wallboard 36 through couplant.The testing staff need write down the corresponding relation of knowing detector geocoding and installation site numbering.
Claims (5)
1. acoustic emission detector; In the good shell of magnetic shield performance, calibrate AE sensor, signals collecting are installed in detector inside with processing unit, power supply unit and transmission unit, need not aerial lug; It is characterized in that: calibrate AE sensor is installed in the detector front end; Under the double action of spring force and magnetic pull, closely contact with the storage tank wallboard, reach good coupling effect; The adjustable type tripod can be adjusted the setting height(from bottom) of calibrate AE sensor, makes all calibrate AE sensor places at grade, can also keep the coupling of calibrate AE sensor and storage tank wallboard good, plays the effect of stable detection appearance.
2. acoustic emission detector according to claim 1; It is characterized in that: the calibrate AE sensor deck is fixed on the separation layer of housing with spring; Calibrate AE sensor embeds deck after inserting good plug; Pass the middle circular hole of front-end protection lid and contact with the storage tank wallboard, because the elastic force effect of spring, surface of contact can highlight.
3. acoustic emission detector according to claim 1 is characterized in that: have the circular hole that calibrate AE sensor is passed in the middle of the front-end protection lid, be inlaid with magnet on every side.
4. acoustic emission detector according to claim 1 is characterized in that: the detector shell uses phenoplast to make, with weight reduction, reduce cost; The detector inner surface of outer cover is lined with the very thin metal level that one deck uses ferrimagnet to make, and inner components and parts is played the effect of magnetic shielding.
5. acoustic emission detector according to claim 1 is characterized in that: detector is fixed on the adjustable type tripod through sleeve, is carved with scale on the centre strut of adjustable type tripod, setting height(from bottom) that can clear and definite calibrate AE sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200096458U CN202442998U (en) | 2012-01-10 | 2012-01-10 | Acoustic emission detecting instrument without connecting wires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200096458U CN202442998U (en) | 2012-01-10 | 2012-01-10 | Acoustic emission detecting instrument without connecting wires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202442998U true CN202442998U (en) | 2012-09-19 |
Family
ID=46824442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200096458U Expired - Fee Related CN202442998U (en) | 2012-01-10 | 2012-01-10 | Acoustic emission detecting instrument without connecting wires |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202442998U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565195A (en) * | 2012-01-10 | 2012-07-11 | 税爱社 | Connection-free type acoustic emission detector |
| CN103412054A (en) * | 2013-07-26 | 2013-11-27 | 中国矿业大学 | Sensor fixing test rack for coal rock uniaxial compression acoustic emission test and use method |
| CN103926316A (en) * | 2014-04-23 | 2014-07-16 | 北京中铁通电务技术开发有限公司 | External locking device flaw detector |
| CN104792878A (en) * | 2014-01-17 | 2015-07-22 | 中国特种设备检测研究院 | Detection device |
| CN104803008A (en) * | 2015-04-27 | 2015-07-29 | 中国直升机设计研究所 | Rotor wing rotating signal collecting device for helicopter model |
-
2012
- 2012-01-10 CN CN2012200096458U patent/CN202442998U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565195A (en) * | 2012-01-10 | 2012-07-11 | 税爱社 | Connection-free type acoustic emission detector |
| CN102565195B (en) * | 2012-01-10 | 2013-12-18 | 税爱社 | Connection-free type acoustic emission detector |
| CN103412054A (en) * | 2013-07-26 | 2013-11-27 | 中国矿业大学 | Sensor fixing test rack for coal rock uniaxial compression acoustic emission test and use method |
| CN103412054B (en) * | 2013-07-26 | 2015-11-04 | 中国矿业大学 | Sensor fixing test rack for coal rock uniaxial compression acoustic emission test and use method |
| CN104792878A (en) * | 2014-01-17 | 2015-07-22 | 中国特种设备检测研究院 | Detection device |
| CN104792878B (en) * | 2014-01-17 | 2017-12-19 | 中国特种设备检测研究院 | Detection means |
| CN103926316A (en) * | 2014-04-23 | 2014-07-16 | 北京中铁通电务技术开发有限公司 | External locking device flaw detector |
| CN103926316B (en) * | 2014-04-23 | 2017-03-08 | 北京中铁通电务技术开发有限公司 | A kind of external locking device crack detector |
| CN104803008A (en) * | 2015-04-27 | 2015-07-29 | 中国直升机设计研究所 | Rotor wing rotating signal collecting device for helicopter model |
| CN104803008B (en) * | 2015-04-27 | 2018-02-23 | 中国直升机设计研究所 | A kind of helicopter model rotor wing rotation signal pickup assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202442998U (en) | Acoustic emission detecting instrument without connecting wires | |
| JP2019519750A (en) | Near-seafloor hydrate exploration system | |
| CN205982517U (en) | Wireless power cable fault appearance of fixing a point | |
| CN104848900B (en) | Array-type ocean acoustical signal measurement system | |
| CN203490359U (en) | Portable transformer station noise imaging positioning detecting device | |
| CN107817531B (en) | Pipeline instrument receiver coil structure, signal processing method and pipeline instrument receiver | |
| CN201673176U (en) | Sensor fixing device | |
| CN203037774U (en) | Noise source positioner for transformer and electric reactor | |
| CN107271022A (en) | A kind of transformer vibration noise Integrated Measurement System | |
| CN203722761U (en) | System supporting automatic tool tests of set top box | |
| CN103336266A (en) | Portable transformer substation noise imaging positioning detection device | |
| CN202075374U (en) | Sleeve end shield discharging ultrasonic detection device | |
| CN102565195B (en) | Connection-free type acoustic emission detector | |
| CN107402063B (en) | Capturing device for collecting vibration signals of transplanting machine and method for capturing signals of capturing device | |
| CN102944299B (en) | Sound-proof shield capable of regulating noise detection | |
| CN201622354U (en) | Three-direction low-frequency electric digital seismogragh | |
| CN107064997A (en) | Earth-quake predictor based on Extremely Low Frequency Electromagnetic method | |
| CN204142685U (en) | A kind of insulator damage check instrument | |
| CN105606200A (en) | Three-axial vibration sensor structure | |
| CN208999360U (en) | A kind of device using electric signal testing air permeable paper performance | |
| CN209746132U (en) | Satellite navigation testing arrangement | |
| CN208109242U (en) | A kind of fixed device of load sensor | |
| CN209117809U (en) | Wedge-shaped superfrequency partial discharge sensor | |
| CN207395893U (en) | A kind of ambient noise and ambient vibration detection device | |
| CN205404701U (en) | Buzzer automatic testing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20150110 |
|
| EXPY | Termination of patent right or utility model |