CN101126739B - Welding tube soldering seam quality detection and defected welding tube automatic elimination control system - Google Patents
Welding tube soldering seam quality detection and defected welding tube automatic elimination control system Download PDFInfo
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- CN101126739B CN101126739B CN2007101128375A CN200710112837A CN101126739B CN 101126739 B CN101126739 B CN 101126739B CN 2007101128375 A CN2007101128375 A CN 2007101128375A CN 200710112837 A CN200710112837 A CN 200710112837A CN 101126739 B CN101126739 B CN 101126739B
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- 230000008030 elimination Effects 0.000 title claims abstract description 11
- 238000003379 elimination reaction Methods 0.000 title claims abstract description 11
- 238000001514 detection method Methods 0.000 title abstract description 17
- 238000003466 welding Methods 0.000 title description 4
- 238000005476 soldering Methods 0.000 title 1
- 230000002950 deficient Effects 0.000 claims description 15
- 238000005070 sampling Methods 0.000 claims description 11
- 239000000284 extract Substances 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 5
- 238000002955 isolation Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 4
- 230000003750 conditioning effect Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Abstract
The utility model relates to a weld quality detection and automatic defects reject/control system for welded pipes, which comprising an eddy current sensor, a zero potential compensator, an amplifier, a single-chip microprocessor control circuit, a defect signal processing circuit, a photoelectric isolation circuit and a relay drive circuit. The eddy current sensor is connected with the zero potential compensator, and the zero potential compensator is connected with the amplifier, which is connected with the defect signal processing circuit. The defect signal processing circuit is connected with the single-chip microprocessor control circuit, and the single-chip microprocessor control circuit is connected with the photoelectric isolation circuit, with which the relay drive circuit is connected. The weld quality defect signal, detected by the eddy current, is transmitted to a single-chip microprocessor AT89C52 after being converted into low level, and the single-chip microprocessor AT89C52 generates interrupts and sends an instruction to carry out elimination treatment to the welded pipe. The detection system in the utility model can eliminate simple, repeated and heavy hand labor; has the advantages of high sensitivity, resolution, accuracy and fast detection.
Description
Technical field
The present invention relates to a kind of welded tube weldquality and detect and defective welded tube automatic elimination control system, use the control system that eddy current sensor, phase-sensitive detector (PSD), relay, single chip computer AT 89C52 and some peripheral chip circuit realize that the welded tube weldquality detects and the defective welded tube is rejected automatically specifically.
Background technology
Welded tube is widely used in fields such as industry, agricultural, national defence, and is bringing into play in these fields and important effect.In welded tube was produced, because welded tube need bear various hydrodynamic pressures, whether qualified weldquality became check welding tube quality important indicator.Along with the continuous expansion of the range of application of welded still pipe, also more and more higher to the requirement of its quality, present industrial welding tube quality lossless detection method has Ultrasonic Detection, ray detection, infiltration detection, magnetic to detect and EDDY CURRENT.Eddy Current Nondestructive Testing is compared its unique advantage with additive method: compares with ray detection with Ultrasonic Detection, do not need couplant, but non-cpntact measurement; Compare with the infiltration detection, need not clean test specimen, can realize detecting robotization; Compare with the magnetic detection, all effective to magnetic material and nonmagnetic substance, and free from environmental pollution, simple to operate.Along with welded tube production need progressively realize full automation, develop a kind of system that can be online with automatic rejecting defective welded tube with original system, replace manually carrying out the rejecting work of defective welded tube, liberate, develop the productivity, improve rejecting quality and efficient and become inevitable development trend.
Summary of the invention
At above-mentioned deficiency, the invention provides and a kind ofly replace simple, repetition, heavy hand labor, and the welded tube weldquality that can increase substantially efficient detects and defective welded tube automatic elimination control system.
The present invention is achieved by the following technical solutions:
A kind of welded tube weldquality detects and rejects defective welded tube automatic elimination control system automatically, and it is made up of eddy current sensor, zero potential compensator, amplifier, single chip machine controlling circuit, flaw indication treatment circuit, photoelectric isolating circuit, relay drive circuit.Eddy current sensor connects the zero potential compensator, the zero potential compensator links to each other with amplifier, connects the flaw indication treatment circuit behind the amplifier, and the flaw indication treatment circuit connects single chip machine controlling circuit, connect photoelectric isolating circuit behind the single chip machine controlling circuit, photoelectric isolating circuit is succeeded electrical apparatus driving circuit.The flaw indication treatment circuit comprises phase shifter, low-frequency amplifier, low-pass filter, phase-sensitive detector (PSD), amplitude discriminator, sampling hold circuit.Low-frequency amplifier is connected with low-pass filter, and phase-sensitive detector (PSD) connects phase shifter and low-pass filter, connects amplitude discriminator behind the low-pass filter, connects sampling hold circuit behind the amplitude discriminator.Single chip machine controlling circuit comprises single chip computer AT 89C52, analogue-to-digital converters, digital-analog convertor.Analogue-to-digital converters, digital-analog convertor meet single-chip microcomputer AT89C52.Amplifier connects the low-frequency amplifier and the phase-sensitive detector (PSD) of flaw indication treatment circuit, sampling hold circuit in the flaw indication treatment circuit, phase shifter connect analogue-to-digital converters and the digital-analog convertor in the single chip machine controlling circuit respectively, the input end of photoelectric isolating circuit meets the P1.0 of single-chip microcomputer AT89C52, can connect the motor of rejecting the defective welded tube behind the relay drive circuit.
The detection signal that the probe of eddy current sensor produces must compensate earlier owing to there is zero potential, then enters amplifier.The difference that phase-sensitive detector (PSD) and low-pass filter utilize phase place and frequency extracts flaw indication from carrier signal and numerous undesired signal.The waveform of flaw indication by regularization of amplitude discriminator after, deliver to analogue-to-digital converters in the single chip machine controlling circuit through sampling hold circuit, handle by single chip computer AT 89C52 after being converted into digital signal, single chip computer AT 89C52 utilizes the amplitude of the flaw indication that obtains from amplitude discriminator as feedback information, the control phase shifter carries out Phase Tracking, makes phase-sensitive detector (PSD) go out work in optimum phase.
Through EDDY CURRENT to the weldquality flaw indication after conditioning, become low level and be transported to single chip computer AT 89C52, single chip computer AT 89C52 produces interruption, send instruction, this welded tube is rejected processing, the time-delay that motor is connected is realized by the timer function of single-chip microcomputer.In the circuit of rejecting signal output, be connected to photoelectric isolating circuit, prevented that effectively on-the-spot electromagnetic interference (EMI) or power-frequency voltage from moving back in the system.Relay drive circuit has used a solid-state relay, does not therefore have spark and occur when connecting, and can not cause interference to the normal operation of single-chip microcomputer.
A kind of welded tube weldquality provided by the invention detects and rejects automatically that defective welded tube automatic elimination control system can replace simply, repetition, heavy hand labor, has detection sensitivity, degree of detection height, and detection speed is advantage accurately.
Description of drawings
Fig. 1 is the structured flowchart that a kind of welded tube weldquality detected and rejected automatically defective welded tube automatic elimination control system;
Fig. 2 is the structured flowchart of flaw indication treatment circuit;
Fig. 3 is the structured flowchart of single chip machine controlling circuit;
Fig. 4 is the circuit theory diagrams of phase-sensitive detector (PSD);
Fig. 5 is the schematic diagram of photoelectric isolating circuit and relay drive circuit.
Wherein, 1, eddy current sensor 2, zero potential compensator, 3, amplifier, 4, the flaw indication treatment circuit, 5, single chip machine controlling circuit, 6, photoelectric isolating circuit, 7, relay drive circuit.
Embodiment
Among Fig. 1, Fig. 2, Fig. 3, eddy current sensor 1 connects zero potential compensator 2, zero potential compensator 2 links to each other with amplifier 3, connect flaw indication treatment circuit 4 behind the amplifier 3, flaw indication treatment circuit 4 connects single chip machine controlling circuit 5, connect photoelectric isolating circuit 6 behind the single chip machine controlling circuit 5, photoelectric isolating circuit 6 is succeeded electrical apparatus driving circuit 7.Flaw indication treatment circuit 4 comprises phase shifter, low-frequency amplifier, low-pass filter, phase-sensitive detector (PSD), amplitude discriminator, sampling hold circuit.Low-frequency amplifier is connected with low-pass filter, and phase-sensitive detector (PSD) connects phase shifter and low-pass filter, connects amplitude discriminator behind the low-pass filter, connects sampling hold circuit behind the amplitude discriminator.Single chip machine controlling circuit 5 comprises single chip computer AT 89C52, analogue-to-digital converters, digital-analog convertor.Analogue-to-digital converters, digital-analog convertor meet single-chip microcomputer AT89C52.Amplifier 3 connects the low-frequency amplifier and the phase-sensitive detector (PSD) of flaw indication treatment circuit 4, sampling hold circuit in the flaw indication treatment circuit 4, phase shifter connect analogue-to-digital converters and the digital-analog convertor in the single chip machine controlling circuit 5 respectively, the input end of photoelectric isolating circuit 6 meets the P1.0 of single-chip microcomputer AT89C52, can connect the motor of rejecting the defective welded tube behind the relay drive circuit 7.
Fig. 4 is the circuit theory diagrams of phase-sensitive detector (PSD), and phase-sensitive detector (PSD) adds low-pass filter by non-kind of thread elements and constitutes.Differentiate the signal phase that various defectives cause with phase-sensitive detector (PSD), regulate the phase shifter phase place, phase-sensitive detector (PSD) is passed through by flaw indication, weaken the signal that other factors cause.
Fig. 5 is the schematic diagram of photoelectric isolating circuit and relay drive circuit, and relay drive circuit has used a solid-state relay, does not therefore have spark and occur when connecting, and can not cause interference to the normal operation of single-chip microcomputer.
The detection signal that the probe of eddy current sensor 1 produces must compensate through zero potential compensator 2 earlier owing to there is zero potential, then enters amplifier 3.The difference that phase-sensitive detector (PSD) and low-pass filter utilize phase place and frequency extracts flaw indication from carrier signal and numerous undesired signal.The waveform of flaw indication by regularization of amplitude discriminator after, deliver to analogue-to-digital converters in the single chip machine controlling circuit 5 through sampling hold circuit, handle by single chip computer AT 89C52 after being converted into digital signal, single chip computer AT 89C52 utilizes the amplitude of the flaw indication that obtains from amplitude discriminator as feedback information, the control phase shifter carries out Phase Tracking, makes phase-sensitive detector (PSD) go out work in optimum phase.Through EDDY CURRENT to the weldquality flaw indication after conditioning, become low level and be transported to single chip computer AT 89C52, single chip computer AT 89C52 produces interruption, sends instruction, and this welded tube is rejected processing.
Claims (3)
1. a welded tube weldquality detects and defective welded tube automatic elimination control system, it is by eddy current sensor, the zero potential compensator, amplifier, the flaw indication treatment circuit, single chip machine controlling circuit, photoelectric isolating circuit, relay drive circuit is formed, it is characterized in that: eddy current sensor connects the zero potential compensator, the zero potential compensator links to each other with amplifier, the signal that the eddy current sensor probe produces enters amplifier after the zero potential compensator compensates, connect the flaw indication treatment circuit behind the amplifier, the difference that phase-sensitive detector (PSD) in the flaw indication treatment circuit and low-pass filter utilize phase place and frequency extracts flaw indication from carrier signal and numerous undesired signal, again by after regularization of amplitude discriminator, through sampling hold circuit flaw indication is treated to low level and delivers to single-chip microcomputer, the flaw indication treatment circuit connects single chip machine controlling circuit, connect photoelectric isolating circuit behind the single chip machine controlling circuit, photoelectric isolating circuit is succeeded electrical apparatus driving circuit.
2. a kind of welded tube weldquality according to claim 1 detects and defective welded tube automatic elimination control system, it is characterized in that: described flaw indication treatment circuit comprises phase shifter, low-frequency amplifier, low-pass filter, phase-sensitive detector (PSD), amplitude discriminator, sampling hold circuit, low-frequency amplifier is connected with low-pass filter, phase-sensitive detector (PSD) connects phase shifter and low-pass filter, connect amplitude discriminator behind the low-pass filter, connect sampling hold circuit behind the amplitude discriminator.
3. a kind of welded tube weldquality according to claim 1 detects and defective welded tube automatic elimination control system, it is characterized in that: single chip machine controlling circuit comprises single chip computer AT 89C52, analogue-to-digital converters, digital analog converter, and analog-digital converter, digital analog converter meet single-chip microcomputer AT89C52.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101128375A CN101126739B (en) | 2007-09-10 | 2007-09-10 | Welding tube soldering seam quality detection and defected welding tube automatic elimination control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101128375A CN101126739B (en) | 2007-09-10 | 2007-09-10 | Welding tube soldering seam quality detection and defected welding tube automatic elimination control system |
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| Publication Number | Publication Date |
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| CN101126739A CN101126739A (en) | 2008-02-20 |
| CN101126739B true CN101126739B (en) | 2010-09-08 |
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| CN2007101128375A Expired - Fee Related CN101126739B (en) | 2007-09-10 | 2007-09-10 | Welding tube soldering seam quality detection and defected welding tube automatic elimination control system |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103115958B (en) * | 2012-12-13 | 2015-04-08 | 中国铁道科学研究院金属及化学研究所 | Method and device for detecting welded joint defects of dissimilar steel flash welding |
| CN113042929B (en) * | 2021-03-31 | 2022-10-18 | 天津一重电气自动化有限公司 | Welding seam detector circuit system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4287474A (en) * | 1979-02-12 | 1981-09-01 | Fastritsky Viktor S | Method and apparatus for non-destructive quality testing of spot welds |
| US4337431A (en) * | 1978-03-13 | 1982-06-29 | United Kingdom Atomic Energy Authority | Eddy current test apparatus for annular welds |
| CN1109170A (en) * | 1993-11-22 | 1995-09-27 | Abb管理有限公司 | Method of testing weld seams using an eddy-current technique |
| DE19726513A1 (en) * | 1997-06-23 | 1999-01-28 | Siemens Ag | Eddy current testing device esp. for testing weld seam |
| CN2425362Y (en) * | 2000-04-07 | 2001-03-28 | 徐章遂 | Flaw magnetic-leakage detector |
| CN2437447Y (en) * | 2000-05-25 | 2001-07-04 | 曾维尔 | Non-contact automatic tracking adjusting device for welding |
| CN201166651Y (en) * | 2007-09-10 | 2008-12-17 | 于复生 | Control system for detecting solder tube weld joint quality and automatically rejecting defect solder tube |
-
2007
- 2007-09-10 CN CN2007101128375A patent/CN101126739B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4337431A (en) * | 1978-03-13 | 1982-06-29 | United Kingdom Atomic Energy Authority | Eddy current test apparatus for annular welds |
| US4287474A (en) * | 1979-02-12 | 1981-09-01 | Fastritsky Viktor S | Method and apparatus for non-destructive quality testing of spot welds |
| CN1109170A (en) * | 1993-11-22 | 1995-09-27 | Abb管理有限公司 | Method of testing weld seams using an eddy-current technique |
| DE19726513A1 (en) * | 1997-06-23 | 1999-01-28 | Siemens Ag | Eddy current testing device esp. for testing weld seam |
| CN2425362Y (en) * | 2000-04-07 | 2001-03-28 | 徐章遂 | Flaw magnetic-leakage detector |
| CN2437447Y (en) * | 2000-05-25 | 2001-07-04 | 曾维尔 | Non-contact automatic tracking adjusting device for welding |
| CN201166651Y (en) * | 2007-09-10 | 2008-12-17 | 于复生 | Control system for detecting solder tube weld joint quality and automatically rejecting defect solder tube |
Non-Patent Citations (2)
| Title |
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| 刘凯等.最新实用在线高频焊管涡流探伤技术.焊管19 1.1996,19(1),33-35,40. * |
| 吴红杰等.四柱式焊缝跟踪涡流传感器及其应用.北京航空航天大学学报27 5.2001,27(5),600-603. * |
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Owner name: JI'NAN GOLDPHOTOS INSTRUMENT CO., LTD. Free format text: FORMER OWNER: YU FUSHENG Effective date: 20120316 |
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Effective date of registration: 20120316 Address after: Room 2, apartment 1015, future city, industrial South Road, hi tech Zone, Shandong, Ji'nan, 250101 Patentee after: Ji'nan Guang Guang Photoelectric Instrument Co., Ltd. Address before: 250014 Heping Road, Lixia District, Shandong, Ji'nan, China, No. 47 Patentee before: Yu Fusheng |
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Owner name: RUGAO NANHAI WATER TREATMENT AGENT CO., LTD. Free format text: FORMER OWNER: JI'NAN GOLDPHOTOS INSTRUMENT CO., LTD. Effective date: 20130812 |
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Effective date of registration: 20130812 Address after: 226571, Jiangsu Province, Nantong City, Rugao Province East Chen Chen, East Chen community neighborhood committee 25 groups Patentee after: Rugao Nanhai water treatment agent Co., Ltd. Address before: Room 2, apartment 1015, future city, industrial South Road, hi tech Zone, Shandong, Ji'nan, 250101 Patentee before: Ji'nan Guang Guang Photoelectric Instrument Co., Ltd. |
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