CN203164158U - Damage detection device for steel tube - Google Patents
Damage detection device for steel tube Download PDFInfo
- Publication number
- CN203164158U CN203164158U CN 201320125039 CN201320125039U CN203164158U CN 203164158 U CN203164158 U CN 203164158U CN 201320125039 CN201320125039 CN 201320125039 CN 201320125039 U CN201320125039 U CN 201320125039U CN 203164158 U CN203164158 U CN 203164158U
- Authority
- CN
- China
- Prior art keywords
- circuit
- detection device
- damage detection
- probe
- steel pipe
- 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 discloses a damage detection device for a steel tube. Various defects such as layering and cracks are generated inside or outside the steel tube in the producing and processing processes of the steel tube. A popular nondestructive testing method at present is ultrasonic flaw detection. The damage detection device comprises a probe (1), wherein the probe is connected with a flaw detector (2) through a lead; the flaw detector comprises a shell (3); a programmable logic control device (4) is arranged inside the shell, and respectively connected with a single chip (5), a photoelectric coupling circuit (6), an analogue-digital converter (7) and a memory (8); the single chip is connected with a display circuit (17), a key control circuit (18), an alarm device (19) and a USB (universal serial bus) communication interface (14); the photoelectric coupling circuit is connected with an ultrasonic sensor exciting circuit (9); and the ultrasonic sensor exciting circuit is connected with the probe. The damage detection device of the steel tube is used for detecting the defects of the steel tube.
Description
Technical field:
The utility model relates to a kind of steel pipe damage detection device.
Background technology:
Steel pipe is in the process of producing and processing, and its inner or outside meeting produces various defectives such as layering, crackle.Detect at present steel pipe whether damaged method all might cause damage to steel pipe.
Summary of the invention:
The purpose of this utility model provides a kind of steel pipe damage detection device.
Above-mentioned purpose realizes by following technical scheme:
A kind of steel pipe damage detection device, its composition comprises: probe, described probe is connected with defectoscope by lead, described defectoscope comprises housing, in the described housing programmable logic controller (PLC) spare is installed, described programmable logic controller (PLC) spare is connected with single-chip microcomputer, photoelectricity coupled circuit, analog to digital converter, data-carrier store respectively, and described photoelectricity coupled circuit is connected with the ultrasonic sensor exciting circuit, and described ultrasonic sensor exciting circuit is connected with described probe.
Described steel pipe damage detection device; the described defectoscope limiter protection circuit interior with being installed in described housing is connected; described limiter protection circuit is connected with variable gain amplifier; described variable gain amplifier is connected with filtering circuit; described filtering circuit is connected with detecting circuit, and described detecting circuit is connected with described analog to digital converter.
Described steel pipe damage detection device, described single-chip microcomputer respectively with the communication interface circuit, be installed in the display screen on the described housing, the control button that is installed on the described housing is connected.
Beneficial effect:
The utility model it can under the prerequisite of the inner structure of not damaging detected object, detect, utilize the powerful logical process function of CPLD in conjunction with the core of single-chip microcomputer as system, realize ultra-sonic defect detector, improved the reliability of system; Select low cost single chip and programmable logic controller (PLC) spare CPLD at main control chip, improved the dirigibility of system development.
The utility model ultrasonic sensor exciting circuit is under the effect of burst pulse control signal, and generation encourages the high-voltage pulse signal of ultrasonic probe and realizes hyperacoustic emission.In actual ultrasonic inspection, generally high pressure (a few hectovolt) burst pulse is added to the two ends of probe piezoelectric chip, cause the periodicity mechanically deform of piezoelectric chip, thereby form ultrasonic pulse.Voltage is more high, and the efficient that electric energy is converted to acoustic energy is just more high.
Description of drawings:
Accompanying drawing 1 is structural representation of the present utility model.
Accompanying drawing 2 is structural representations of defectoscope in the accompanying drawing 1.
Embodiment:
Embodiment 1:
A kind of steel pipe damage detection device, its composition comprises: probe 1, described probe is connected with defectoscope 2 by lead, described defectoscope comprises housing 3, programmable logic controller (PLC) spare 4 is installed in the described housing, described programmable logic controller (PLC) spare respectively with single-chip microcomputer 5, photoelectricity coupled circuit 6, analog to digital converter 7, storer 8 connects, described single-chip microcomputer and display circuit 17, key control circuit 18, warning device 19, USB communication interface 14 connects, described photoelectricity coupled circuit is connected with ultrasonic sensor exciting circuit 9, and described ultrasonic sensor exciting circuit is connected with described probe.
Embodiment 2:
According to embodiment 1 described steel pipe damage detection device; the described defectoscope limiter protection circuit 10 interior with being installed in described housing is connected; described limiter protection circuit is connected with variable gain amplifier 11; described variable gain amplifier is connected with filtering circuit 12; described filtering circuit is connected with detecting circuit 13, and described detecting circuit is connected with described analog to digital converter.
Embodiment 3:
According to embodiment 1 or 2 described steel pipe damage detection devices, described display circuit is connected with display screen 15 on being installed in described housing, and described key control circuit is connected with control button 16 on being installed in described housing.
Described steel pipe damage detection device, described warning device comprises light emitting diode and loudspeaker.
Embodiment 4:
Above-mentioned steel pipe damage detection device, described ultrasonic sensor exciting circuit is under the effect of burst pulse control signal, generation encourages the high-voltage pulse signal of ultrasonic probe and realizes hyperacoustic emission.In actual ultrasonic inspection, generally high pressure (a few hectovolt) burst pulse is added to the two ends of probe piezoelectric chip, cause the periodicity mechanically deform of piezoelectric chip, thereby form ultrasonic pulse.Voltage is more high, and the efficient that electric energy is converted to acoustic energy is just more high, native system adopts be 400V the concrete ultrasonic exciting circuit of high-pressure modular as shown in Figure 3.
Embodiment 5:
Above-mentioned steel pipe damage detection device, described limiter protection circuit are because probe is transceiver, and probe excitation high pressure will be input to receiving cable.If can not carry out amplitude limit to this signal, will damage the receiving cable circuit component, and make receiving cable a period of time after driving pulse can not normally receive flaw indication, thereby cause the nearly surface inspection erroneous judgement of steel pipe.Native system adopts limiter protection circuit in parallel, be single probe owing to what adopt in the design of system, and the amplitude of emission voltage in order to protect the safety of variable gain amplifier device work, must adopt amplitude limiter circuit up to several hectovolts.Circuit as shown in the figure, diode D3 and D4 carry out amplitude limit to forward and the big pulse signal of negative sense respectively, have protected receiving cable, have improved the reaction sensitivity of receiving cable subsequent conditioning circuit.Because ultrasonic signal frequencies is higher, this requires diode D3 and D4 to have higher reaction velocity and bears about 400V reverse voltage, as shown in Figure 4.
Wherein the capacitor C significant feature is every directly, has selected 0.01 in the design for use
Ceramic condenser.
Embodiment 6:
Above-mentioned steel pipe damage detection device, described variable gain amplifier is because ultrasonic probe receives the signal amplitude of returning very faint (general tens millivolts), for signal being amplified in the suitable range of capture card, need amplifying or decay signal.For signal amplitude is carried out quantitative assessment, at first require the output voltage of amplifier and input voltage linear.For changing value that can measuring amplitude, before the signal that receives enters amplifier, earlier through calibrated attenuator, in order to signal amplitude is quantitatively regulated, be used for the unlike signal amplitude relatively.
Formed by attenuator, gain control interface and gain amplifier three parts.Signal amplifies by deciding gain amplifier after the attenuator decay again.The precision of attenuator is ± 2%.The ultrasonic echo signal is at the 0.2V only of amplitude when amplifying, and contains a large amount of noises, and signal to noise ratio (snr) is lower, is difficult to pick out flaw echo and Bottom echo from waveform.Amplitude through band-pass filter and AD603 amplified signal has about 2V, and signal to noise ratio (S/N ratio) is greatly improved, and can pick out the waveform of flaw echo more clearly.When AD603 output terminal VOUT and feedback end FDBK connect feedback resistance, Gain (dB)=40
+ 20; This moment gain margin be 0dB ~+40dB, by regulating variable resistor enlargement factor is become 10 times among the design.
Embodiment 7:
Above-mentioned steel pipe damage detection device, described filtering circuit is in echoed signal, the frequency of useful signal is the natural frequency of ultrasonic probe, but the noise signal that in receiving signal, has had various frequency contents, therefore before signal is carried out analog to digital conversion, need to adopt wave filter that the clutter in the signal is carried out filtering.Wave filter is that a kind of signal that allows to have particular frequency range passes through, and the equipment of other all signals of decaying.A desirable wave filter all frequencies in its passband have a desirable gain, the gain of all frequencies beyond its passband is zero, therefore be widely used in the desired frequency part of extraction from sophisticated signal, and filter not desired frequency part.We utilize integrated transporting discharging MAX4104 to constitute second order voltage controlled voltage source bandwidth-limited circuit in the design, in order to the noise of introducing in the signal amplification process is controlled.
Embodiment 8:
Above-mentioned steel pipe damage detection device, described detecting circuit just need carry out demodulation to echoed signal in order to obtain the detection information of object to be detected.Mainly be to need which amplitude modulation information in defectoscope, so need to adopt amplitude demodulation.Amplitude demodulation is exactly to receive the high-frequency signal of modulating from amplitude to restore modulation signal.Detecting circuit commonly used is a lot, adopts diode peak envelop detection circuit here.
Embodiment 9:
Above-mentioned steel pipe damage detection device, the AT89C51 that described single-chip microcomputer adopts is the flash memory of a 4K of including byte programmable and erasable, 8 single-chip microcomputers of 128 byte RAM, low-voltage, high-performance CMOS structure.Adopt ANTIEL high density nonvolatile memory manufacturing technology to make, compatible mutually with MCS-51 instruction set and the output pin of industrial standard.Because multi-functional 8 bit CPUs and flash memory are combined in the single chip, AT89C51 is a kind of efficient microcontroller, for a lot of embedded control systems provide a kind of dirigibility high and cheap scheme.
Claims (4)
1. steel pipe damage detection device, its composition comprises: probe, it is characterized in that: described probe is connected with defectoscope by lead, described defectoscope comprises housing, in the described housing programmable logic controller (PLC) spare is installed, described programmable logic controller (PLC) spare respectively with single-chip microcomputer, the photoelectricity coupled circuit, analog to digital converter, storer connects, described single-chip microcomputer and display circuit, key control circuit, warning device, the USB communication interface connects, described photoelectricity coupled circuit is connected with the ultrasonic sensor exciting circuit, and described ultrasonic sensor exciting circuit is connected with described probe.
2. steel pipe damage detection device according to claim 1; it is characterized in that: the described defectoscope limiter protection circuit interior with being installed in described housing is connected; described limiter protection circuit is connected with variable gain amplifier; described variable gain amplifier is connected with filtering circuit; described filtering circuit is connected with detecting circuit, and described detecting circuit is connected with described analog to digital converter.
3. steel pipe damage detection device according to claim 1 and 2 is characterized in that: described display circuit is connected with display screen on being installed in described housing, and described key control circuit is connected with control button on being installed in described housing.
4. steel pipe damage detection device according to claim 1 and 2, it is characterized in that: described warning device comprises light emitting diode and loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320125039 CN203164158U (en) | 2013-03-19 | 2013-03-19 | Damage detection device for steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320125039 CN203164158U (en) | 2013-03-19 | 2013-03-19 | Damage detection device for steel tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203164158U true CN203164158U (en) | 2013-08-28 |
Family
ID=49025335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320125039 Expired - Fee Related CN203164158U (en) | 2013-03-19 | 2013-03-19 | Damage detection device for steel tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203164158U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259310A (en) * | 2015-10-22 | 2016-01-20 | 中航卓越锻造（无锡）有限公司 | Flaw detection device for annular forging |
| CN109738521A (en) * | 2019-01-21 | 2019-05-10 | 浙江工业大学 | A kind of hand-held automatically exciting damage check instrument for structure flaw detection |
| CN109738522A (en) * | 2019-01-21 | 2019-05-10 | 浙江工业大学 | A kind of handheld electromagnetic absorption damage check instrument for steel building flaw detection |
-
2013
- 2013-03-19 CN CN 201320125039 patent/CN203164158U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259310A (en) * | 2015-10-22 | 2016-01-20 | 中航卓越锻造（无锡）有限公司 | Flaw detection device for annular forging |
| CN109738521A (en) * | 2019-01-21 | 2019-05-10 | 浙江工业大学 | A kind of hand-held automatically exciting damage check instrument for structure flaw detection |
| CN109738522A (en) * | 2019-01-21 | 2019-05-10 | 浙江工业大学 | A kind of handheld electromagnetic absorption damage check instrument for steel building flaw detection |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103486960B (en) | A kind of ultrasound wave, eddy current and EMAT integration nondestructive thickness measuring instrument and method thereof | |
| CN203164158U (en) | Damage detection device for steel tube | |
| CN106353681B (en) | Automobile motor and speed changer sensor detection equipment | |
| CN107576384A (en) | On-line monitoring system and method for cracks L amb wave of hoisting equipment | |
| CN103475343A (en) | Low-power-consumption processing method for anti-interference, amplification and shaping of weak signals | |
| CN202814927U (en) | Ultrasonic nondestructive flaw detector | |
| CN104267056A (en) | X-ray fluorescence tester for testing heavy metal pollution of soil | |
| CN202453327U (en) | Ultrasonic wall detector | |
| CN105466682B (en) | A kind of Pneumatic braking system performance testing device and test method | |
| CN201724882U (en) | Double-channel high-low frequency ultrasonic decay signals detection device | |
| CN105973997A (en) | Ultrasonic transceiver | |
| CN104614106B (en) | High-speed railway rail stress detection device | |
| CN203894410U (en) | Infrared type obstacle detection device | |
| CN106680369B (en) | Ultrasonic mud-water interface measuring device and method | |
| CN206411064U (en) | A kind of high-precision stress wave signal collecting device | |
| CN102323609A (en) | Four-element parallel tellurium-zinc-cadmium nuclear radiation detector device | |
| CN108535356A (en) | A kind of gas concentration ultrasonic testing system | |
| CN210834776U (en) | Ultrasonic flaw detector | |
| CN105629059A (en) | Signal detection method | |
| CN103487631B (en) | Modulation-demodulation type current sensor | |
| CN203951445U (en) | Preamplifier | |
| CN206161595U (en) | Detect insulator internal defect's ultrasonic device | |
| CN203838249U (en) | Nondestructive detection device used for measuring dielectric properties of tomatoes | |
| CN106770660A (en) | A kind of high-precision stress wave signal acquisition method and equipment | |
| CN204255887U (en) | For the X-fluorescence tester of testing soil heavy metal pollution |
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: 20130828 Termination date: 20150319 |
|
| EXPY | Termination of patent right or utility model |