CN204129008U - Magnetostrictive guided-wave sensor and the heat exchanger tube defect detecting system containing sensor - Google Patents
Magnetostrictive guided-wave sensor and the heat exchanger tube defect detecting system containing sensor Download PDFInfo
- Publication number
- CN204129008U CN204129008U CN201420492407.6U CN201420492407U CN204129008U CN 204129008 U CN204129008 U CN 204129008U CN 201420492407 U CN201420492407 U CN 201420492407U CN 204129008 U CN204129008 U CN 204129008U
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- exchanger tube
- shell
- magnet
- plug
- 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
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The utility model discloses magnetostrictive guided-wave sensor and the heat exchanger tube defect detecting system containing sensor, sensor comprises shell, the lateral wall of shell is provided with the first annular wiring groove and the second annular wiring groove, drive coil and receiving coil is placed with respectively in first annular wiring groove and the second annular wiring groove, drive coil and receiving coil are solenoid coil, shell inner cavity is placed with exciting magnet respectively and receives magnet, exciting magnet and reception magnet are SmCo permanent magnet, one end of shell is connected with plug Connection Block, plug Connection Block be connected with excitation plug and receive plug.Detection system comprises sensor, power amplifier, signal generator, computing machine, A/D converter and filter amplifier.The utility model is by magnetostrictive effect, and directly go out longitudinal mode supersonic guide-wave at heat exchanger tube underexcitation, in whole testing process, sensor and heat exchanger tube are without the need to contacting, and improve detection efficiency and applicability.
Description
Technical field
The utility model belongs to field of ultrasonic nondestructive detection, particularly detection magnetostrictive guided-wave sensor and the heat exchanger tube defect detecting system containing sensor in heat exchanger tube.
Background technology
Heat exchanger tube is widely used in petrochemical industry, and usage quantity is just along with industry development sharply increases.Due to heat exchanger tube work under bad environment, under being often in the condition of high temperature, high pressure, its stress state is complicated, easily inefficacy is produced under stress reciprocation, and the accumulation of corrosion also very easily causes heat exchanger tube to produce inefficacy, thus there is great potential safety hazard, so the detection of exchange heat pipe is very necessary.In front, the detection method for heat exchanger tube mainly contains precursor in far field, local magnetic saturation EDDY CURRENT, the detection of interior rotation ultrasonic phase array and flux-leakage detection method.Above-mentioned detection method, the sensing range of its sensor is limited, and thus sensor has to pass through the tested region of heat exchanger tube, just can complete the detection of whole heat exchanger tube, and the moving process of probe makes detection efficiency on the low side, and device is comparatively complicated.On the other hand, require that heat exchanger tube cleans tested area inner wall, also have impact on the detection efficiency of said method.
Ultrasonic guided wave detecting has the advantage that can be realized long distance detection by single-point-excitation, is applied to heat exchanger tube and detects, can detect in testing process without the need to mobile probe to whole heat exchanger tube.A kind of wave detecting method is had now to be utilize magneto strictive sensor to encourage torsional wave pulse in the waveguide, by the mechanical couplings of guided wave cone with heat exchanger tube inwall, torsional wave pulse in waveguide is reached heat exchanger tube, in like manner receives torsional wave echo, complete the detection of exchange heat pipe.It is good that the method requires that heat exchanger tube inside surface and guided wave tapered joint touch, to realize good mechanical couplings, thus the surface requirements of heat exchanging inside pipe wall is higher, for the rough situation of heat exchanger tube inside surface, surface treatment is comparatively loaded down with trivial details, thus causes the inconvenience in practical operation.
In addition, a kind of technology is the detection method for heat exchanger tube in addition, by the Energy Coupling of electromagnetic field, based on magnetostrictive effect, encourages and receive torsional wave in heat exchanger tube, completes the detection of exchange heat pipe.The method requires conduction steel brush and heat exchanger tube contact internal walls well, to form DC loop in order to provide peripheral orientation polarization magnetic field, thus still needs to process pipe surface, can make troubles in practical operation.Above-mentioned two kinds of sensors all require good surface contact, and cleaning requirement is high; And be all utilize torsional wave to detect heat exchanger tube defect, and torsional wave is responsive to axial flaw, and insensitive for circumferential defect, thus has larger restriction to its detected object.
Utility model content
For above-mentioned defect, the purpose of this utility model there are provided detection magnetostrictive guided-wave sensor and the heat exchanger tube defect detecting system containing sensor in heat exchanger tube, cell winding part is placed in pipe when detecting by it, without the need to heat exchanger tube Mechanical Contact, can realize exchanging the efficient detection of heat pipe without the need to movable sensor in testing process; Use the exciting magnet of samarium-cobalt material and receive magnet and quiescent biasing magnetic field is provided, the longitudinal wave guide that mode is single can be motivated, be conducive to the detection and indentification of defect.
For achieving the above object, according to an aspect of the present utility model, provide the magnetostrictive guided-wave sensor for heat exchanger tube defects detection, comprise shell, described housing integration is cylindrical, the lateral wall of shell is provided with the first annular wiring groove and the second annular wiring groove, drive coil and receiving coil is placed with respectively in described first annular wiring groove and the second annular wiring groove, drive coil and receiving coil are solenoid coil, shell inner cavity is placed with exciting magnet respectively and receives magnet in the position corresponding to drive coil and receiving coil, described exciting magnet and reception magnet are SmCo permanent magnet, described exciting magnet and receive that magnet is all cylindrical and polarization axis is all parallel to the axis of shell, one end of shell is connected with plug Connection Block, plug Connection Block be connected with excitation plug and receive plug, excitation plug is connected with drive coil by excitation wire, receive plug to be connected with receiving coil by receiving wire, excitation plug and reception plug are installed in the side of plug Connection Block away from shell.
Preferably, described exciting magnet and receive between magnet and be provided with interfix part, interfix part be positioned at shell and its two ends respectively with exciting magnet with receive magnet and abut against.
Preferably, described shell is provided with end keeper away from one end of plug Connection Block, and one end of described end keeper is stretched in shell and abutted against with reception magnet.
Preferably, described plug Connection Block is extended with pylon near the side of shell, and described pylon stretches into enclosure and abuts against with exciting magnet, pylon is provided with and is convenient to excitation wire and receives the cable hole of wire through pylon.
Preferably, described plug Connection Block comprises casing and covers at box cover plate, and described excitation plug and reception plug are installed on cover plate.
Preferably, described shell, end keeper, middle part keeper and plug Connection Block are made by insulating material.
Preferably, described shell is provided with the cabling elongated slot be convenient to excitation wire and received conductor wiring, in described first annular wiring groove, the second annular wiring groove and cabling elongated slot, all embedding has epoxy resin.
Preferably, the length of described exciting magnet is more than the twice of the width of drive coil, and the length of described reception magnet is more than the twice of the width of receiving coil.
As another scheme of the present utility model, heat exchanger tube defect detecting system, comprises above-mentioned magnetostrictive guided-wave sensor, the excitation plug of described magnetostrictive guided-wave sensor is connected with power amplifier, described power amplifier is connected with signal generator, signal generator is connected with computing machine, computer control signal generator produces sinusoidal pulse current signal, current signal is input to drive coil after power amplifier amplifies, exciting magnet produces the static magnetic field along pipeline axial in heat exchanger tube, drive coil produces the alternating magnetic field along pipeline axial in heat exchanger tube, pass through magnetostrictive effect, thus directly produce the longitudinal mode supersonic guide-wave along heat exchanger tube Propagation at heat exchanger tube underexcitation, computing machine is connected with A/D converter, described A/D converter is connected with filter amplifier, described filter amplifier is connected with the reception plug of magnetostrictive guided-wave sensor, longitudinal mode supersonic guide-wave is after heat exchanger tube reflection, reflection echo, through receiving coil, by counter magnetostriction effect, causes the change of receiving coil induced voltage, produce electric signal, this electric signal is received by computing machine after amplifier and A/D converter after filtering and obtains signal waveforms.
In general, the above technical scheme conceived by the utility model compared with prior art, following beneficial effect can be obtained: the utility model provides axial static magnetic field by the exciting magnet placed in the enclosure and reception magnet, axial alternating magnetic field is provided by drive coil and receiving coil, axial alternating magnetic field and axially static bias magnetic field acting in conjunction, pass through magnetostrictive effect, directly go out longitudinal mode supersonic guide-wave at heat exchanger tube underexcitation, in whole testing process, sensor and heat exchanger tube are without the need to contacting, and improve detection efficiency and applicability.In addition, the utility model employs the samarium cobalt magnet of low conductivity, and the mode of the longitudinal mode supersonic guide-wave motivated is single, is conducive to the detection and indentification of defect.
Accompanying drawing explanation
Fig. 1 is the cut-open view of magnetostrictive guided-wave sensor of the present utility model;
Fig. 2 is the schematic diagram that heat exchanger tube defect detecting system of the present utility model carries out heat exchanger tube detection;
Fig. 3 is standard specimen pipe schematic diagram used in example;
Fig. 4 is the oscillogram using heat exchanger tube defect detecting system to detect gained signal on standard specimen pipe.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, for the magnetostrictive guided-wave sensor of heat exchanger tube defects detection, comprise shell 5, described shell 5 is overall cylindrical, the lateral wall of shell 5 is provided with the first annular wiring groove and the second annular wiring groove, be placed with drive coil 7 and receiving coil 11 respectively in described first annular wiring groove and the second annular wiring groove, described drive coil 7 and receiving coil 11 are solenoid coil.
Shell 5 inner chamber is placed with exciting magnet 6 respectively and receives magnet 10 in the position corresponding to drive coil 7 and receiving coil 11, described exciting magnet 6 and reception magnet 10 are SmCo permanent magnet.Described exciting magnet 6 and receive the axis that all cylindrical and polarization axis of magnet 10 is all parallel to shell 5.Preferably, the length of described exciting magnet 6 is more than the twice of the width of drive coil 7, the length of described reception magnet 10 is more than the twice of the width of receiving coil 11, arrange like this and can make drive coil 7 and receiving coil 11 respectively near exciting magnet 6 and the centre receiving magnet 10, therefore exciting magnet 6 is approximate horizontal with the part magnetic line of force in the external heat-exchanging pipe of the middle part of reception magnet 10, and the axial alternating magnetic field that the static magnetic field energy of axis of this part produces with drive coil 7 and receiving coil 11 well coordinates.
Described exciting magnet 6 and receive between magnet 10 and be provided with interfix part 9, interfix part 9 be positioned at shell 5 and its two ends respectively with exciting magnet 6 with receive magnet 10 and abut against.One end of shell 5 is connected with the plug Connection Block 4 for leaning with heat exchanger tube 14 mouth of pipe, plug Connection Block 4 is also resisted against on shell 5, the side that plug Connection Block 4 and shell 5 lean is heat exchanger tube binding face 22, during detection, heat exchanger tube binding face 22 is resisted against on the mouth of pipe of heat exchanger tube 14, be convenient to the location of sensor like this, and be convenient to calculate drive coil 7 and receiving coil 11 distance to heat exchanger tube 14 mouth of pipe.Preferably, described plug Connection Block 4 is extended with pylon 20 near the side of shell 5, and it is inner that described pylon 20 stretches into shell 5, and pylon 20 props up exciting magnet 6.Pylon 20 is provided with and is convenient to excitation wire and receives the cable hole 21 of wire through pylon 20.Described plug Connection Block 4 comprises casing 23 and covers at casing 23 upper cover plate 3, and described excitation plug 2 and reception plug 1 are installed on cover plate 3.Excitation plug 2 is connected with drive coil 7 by excitation wire, receives plug 1 and is connected with receiving coil 11 by receiving wire, encourages plug 2 and receive plug 1 to be installed in the side of plug Connection Block 4 away from shell 5.Preferably, cover plate 3 is arranged on the side of plug Connection Block 4 away from shell 5, and such design is convenient to excitation plug 2 and is received the installation of plug 1 and the cabling of excitation wire and reception wire.
Described shell 5 is provided with the cabling elongated slot be convenient to excitation wire and received conductor wiring, in described first annular wiring groove, the second annular wiring groove and cabling elongated slot, all embedding has epoxy resin 8.End keeper 12 and shell 5 are connected by screw, and plug Connection Block 4 and shell 5 are connected by screw, and casing 23 and cover plate 3 are connected by screw.Described shell 5 is provided with end keeper 12 away from one end of plug Connection Block 4, one end of described end keeper 12 is stretched in shell 5 and is abutted against with reception magnet 10, the other end of end keeper 12 and the end of shell 5 abut against, and shell 5 is closed by end keeper 12 and plug Connection Block 4 jointly.Described shell 5, interfix part 9, end keeper 12 and plug Connection Block 4 are made by insulating material.
Illustrate to use below in conjunction with Fig. 2 and carry out according to detection magnetostrictive guided-wave sensor exchange heat pipe 14 in heat exchanger tube of the present utility model the process detected.
With reference to Fig. 2, heat exchanger tube defect detecting system, comprise above-mentioned magnetostrictive guided-wave sensor, the excitation plug 2 of described magnetostrictive guided-wave sensor is connected with power amplifier 15, described power amplifier 15 is connected with signal generator 16, signal generator 16 is connected with computing machine 17, computing machine 17 is connected with A/D converter 18, described A/D converter 18 is connected with filter amplifier 19, and described filter amplifier 19 is connected with the reception plug 1 of magnetostrictive guided-wave sensor.
In the testing process of exchange heat pipe 14, the shell 5 of magnetostrictive guided-wave sensor puts into heat exchanger tube 14 inside, and the heat exchanger tube binding face 22 on plug Connection Block 4 is fitted with the mouth of pipe of heat exchanger tube 14.Computing machine 17 control signal generator 16 produces sinusoidal pulse current signal.Current signal, after power amplifier 15 amplifies, is input to drive coil 7.Exciting magnet 6 produces the static magnetic field along heat exchanger tube 14 axis in heat exchanger tube 14, and drive coil 7 produces axial alternating magnetic field in heat exchanger tube 14.Under the effect of axial static magnetic field and axial alternating magnetic field, by magnetostrictive effect, directly produce longitudinal mode supersonic guide-wave, along heat exchanger tube 14 Propagation at heat exchanger tube 14 underexcitation.Longitudinal mode supersonic guide-wave through heat exchanger tube 14 reflect after (if defectiveness, then there is reflection two ends of defect and heat exchanger tube 14, if there is no defect, then only have two end reflections of heat exchanger tube 14), reflection echo is when receiving coil 11, by counter magnetostriction effect, cause the change of receiving coil 11 induced voltage, produce electric signal; Electric signal, after filtering after amplifier 19 and A/D converter 18, enters computing machine 17, obtains signal waveforms, complete whole testing process.
Fig. 3 is an external diameter 25mm as standard specimen pipe, the schematic diagram of the heat exchanger tube 14 of internal diameter 20mm, and the pipe range of standard specimen pipe is L2=2.8m, has a translot defect in the position being about L1=1.4m apart from its left part.The long 12.5mm of translot defect, wide 1mm, dark 0.5mm, equivalent cross-sectional area loss is 3.7%.
Fig. 4 is ferromagnetic material uses when being SmCo heat exchanger tube defect detecting system on standard specimen pipe, detect the oscillogram of gained signal.In figure, represented by signal S1, the end echo S2 of standard specimen pipe represents, cutting flaw echo F1 represents.As can be seen from the figure, this sensor can motivate the single longitudinal wave guide of mode, and can detect translot defect, and accuracy of detection is good.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (9)
1. for the magnetostrictive guided-wave sensor of heat exchanger tube defects detection, it is characterized in that: comprise shell (5), described shell (5) is overall cylindrical, the lateral wall of shell (5) is provided with the first annular wiring groove and the second annular wiring groove, drive coil (7) and receiving coil (11) is placed with respectively in described first annular wiring groove and the second annular wiring groove, drive coil (7) and receiving coil (11) are solenoid coil, shell (5) inner chamber is placed with exciting magnet (6) respectively and receives magnet (10) in the position corresponding to drive coil (7) and receiving coil (11), described exciting magnet (6) and reception magnet (10) are SmCo permanent magnet, described exciting magnet (6) and receive that magnet (10) is all cylindrical and polarization axis is all parallel to the axis of shell (5), one end of shell (5) is connected with plug Connection Block (4), plug Connection Block (4) be connected with excitation plug (2) and receive plug (1), excitation plug (2) is connected with drive coil (7) by excitation wire, receive plug (1) to be connected with receiving coil (11) by receiving wire, excitation plug (2) and reception plug (1) are installed in the side of plug Connection Block (4) away from shell (5).
2. the magnetostrictive guided-wave sensor for heat exchanger tube defects detection according to claim 1, it is characterized in that: described exciting magnet (6) and receive between magnet (10) and be provided with interfix part (9), interfix part (9) be positioned at shell (5) and its two ends respectively with exciting magnet (6) with receive magnet (10) and abut against.
3. the magnetostrictive guided-wave sensor for heat exchanger tube defects detection according to claim 1, it is characterized in that: described shell (5) is provided with end keeper (12) away from one end of plug Connection Block (4), one end of described end keeper (12) is stretched in shell (5) and is abutted against with reception magnet (10).
4. the magnetostrictive guided-wave sensor for heat exchanger tube defects detection according to claim 1, it is characterized in that: described plug Connection Block (4) is extended with pylon (20) near the side of shell (5), described pylon (20) stretches into shell (5) inside and abuts against with exciting magnet (6), pylon (20) is provided with and is convenient to excitation wire and receives the cable hole (21) of wire through pylon (20).
5. the magnetostrictive guided-wave sensor for heat exchanger tube defects detection according to claim 1, it is characterized in that: described plug Connection Block (4) comprises casing (23) and covers at casing (23) upper cover plate (3), described excitation plug (2) and reception plug (1) are installed on cover plate (3).
6. the magnetostrictive guided-wave sensor for heat exchanger tube defects detection according to claim 1, is characterized in that: described shell (5), end keeper (12), middle part keeper (9) and plug Connection Block (4) are made by insulating material.
7. the magnetostrictive guided-wave sensor for heat exchanger tube defects detection according to claim 1, it is characterized in that: described shell (5) is provided with the cabling elongated slot be convenient to excitation wire and received conductor wiring, in described first annular wiring groove, the second annular wiring groove and cabling elongated slot, all embedding has epoxy resin (8).
8. the magnetostrictive guided-wave sensor for heat exchanger tube defects detection according to claim 1, it is characterized in that: the length of described exciting magnet (6) is more than the twice of the width of drive coil (7), the length of described reception magnet (10) is more than the twice of the width of receiving coil (11).
9. heat exchanger tube defect detecting system, is characterized in that: comprise the magnetostrictive guided-wave sensor described in arbitrary claim in claim 1 ~ 8;
The excitation plug (2) of described magnetostrictive guided-wave sensor is connected with power amplifier (15), described power amplifier (15) is connected with signal generator (16), signal generator (16) is connected with computing machine (17), computing machine (17) control signal generator (16) produces sinusoidal pulse current signal, current signal is input to drive coil (7) after power amplifier (15) amplifies, exciting magnet (6) produces the static magnetic field along pipeline axial in heat exchanger tube (14), drive coil (7) produces the alternating magnetic field along pipeline axial in heat exchanger tube (14), pass through magnetostrictive effect, thus directly produce the longitudinal mode supersonic guide-wave along heat exchanger tube (14) Propagation at heat exchanger tube (14) underexcitation,
Computing machine (17) is connected with A/D converter (18), described A/D converter (18) is connected with filter amplifier (19), described filter amplifier (19) is connected with the reception plug (1) of magnetostrictive guided-wave sensor, longitudinal mode supersonic guide-wave is after heat exchanger tube (14) reflection, reflection echo is when receiving coil (11), pass through counter magnetostriction effect, cause the change of receiving coil (11) induced voltage, produce electric signal, this electric signal is received by computing machine (17) after amplifier (19) and A/D converter (18) after filtering and obtains signal waveforms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420492407.6U CN204129008U (en) | 2014-08-28 | 2014-08-28 | Magnetostrictive guided-wave sensor and the heat exchanger tube defect detecting system containing sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420492407.6U CN204129008U (en) | 2014-08-28 | 2014-08-28 | Magnetostrictive guided-wave sensor and the heat exchanger tube defect detecting system containing sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204129008U true CN204129008U (en) | 2015-01-28 |
Family
ID=52385353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420492407.6U Expired - Fee Related CN204129008U (en) | 2014-08-28 | 2014-08-28 | Magnetostrictive guided-wave sensor and the heat exchanger tube defect detecting system containing sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204129008U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388217A (en) * | 2015-12-16 | 2016-03-09 | 杭州浙达精益机电技术股份有限公司 | Ultrasonic guided-wave energy transducer capable of being arranged in detection pipeline |
| CN106500738A (en) * | 2017-01-06 | 2017-03-15 | 天津恒立远大仪表股份有限公司 | Signal transducer with magnetic field bias |
| CN108225228A (en) * | 2018-04-13 | 2018-06-29 | 沈阳工业大学 | Detection electromagnetic ultrasonic thickness measuring transducer architecture in circular pipe |
| CN108508089A (en) * | 2018-04-13 | 2018-09-07 | 沈阳工业大学 | Electromagnetic supersonic flaw detecting transducer architecture is detected outside circular pipe |
| CN108692683A (en) * | 2018-04-13 | 2018-10-23 | 沈阳工业大学 | Electromagnetic ultrasonic thickness measuring transducer architecture is detected outside circular pipe |
| CN108760896A (en) * | 2018-04-13 | 2018-11-06 | 沈阳工业大学 | Electromagnetic supersonic flaw detecting transducer architecture is detected in circular pipe |
-
2014
- 2014-08-28 CN CN201420492407.6U patent/CN204129008U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388217A (en) * | 2015-12-16 | 2016-03-09 | 杭州浙达精益机电技术股份有限公司 | Ultrasonic guided-wave energy transducer capable of being arranged in detection pipeline |
| CN105388217B (en) * | 2015-12-16 | 2018-04-10 | 杭州浙达精益机电技术股份有限公司 | The ultrasonic guided wave transducer of detection pipeline can be built in |
| CN106500738A (en) * | 2017-01-06 | 2017-03-15 | 天津恒立远大仪表股份有限公司 | Signal transducer with magnetic field bias |
| CN108225228A (en) * | 2018-04-13 | 2018-06-29 | 沈阳工业大学 | Detection electromagnetic ultrasonic thickness measuring transducer architecture in circular pipe |
| CN108508089A (en) * | 2018-04-13 | 2018-09-07 | 沈阳工业大学 | Electromagnetic supersonic flaw detecting transducer architecture is detected outside circular pipe |
| CN108692683A (en) * | 2018-04-13 | 2018-10-23 | 沈阳工业大学 | Electromagnetic ultrasonic thickness measuring transducer architecture is detected outside circular pipe |
| CN108760896A (en) * | 2018-04-13 | 2018-11-06 | 沈阳工业大学 | Electromagnetic supersonic flaw detecting transducer architecture is detected in circular pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204129008U (en) | Magnetostrictive guided-wave sensor and the heat exchanger tube defect detecting system containing sensor | |
| CN104198580B (en) | Magnetostrictive guided-wave sensor and the heat exchanger tube defect detecting system that contains sensor | |
| CN104122330A (en) | Pipeline defect detection method and device based on electromagnetic ultrasonic longitudinal guided waves | |
| CN204008560U (en) | Defect inspection sensor and device based on electromagnetic acoustic longitudinal wave guide | |
| US10175202B2 (en) | Magnetostrictively induced guided wave sensor device | |
| CN103412049B (en) | A kind of high temperature steam injection defect of pipeline monitoring method | |
| CN112985647B (en) | Pipeline bending stress detection device | |
| CN102520057B (en) | Magnetostrictive guided-wave sensor for detection in heat exchange tube and detection method thereof | |
| CN202502074U (en) | Multimode fixer for ultrasonic guided wave detection sensor of pipeline | |
| CN104122329B (en) | Based on the detecting sensor of magnetic striction wave guide, detection system and application | |
| CN104833720A (en) | Method for single-coil electromagnetic resonance detection of metal pipeline damage | |
| CN205210021U (en) | Magnetic induced shrinkage or elongation guided wave detects sensor and detecting system based on open magnetic circuit | |
| CN202101974U (en) | Electromagnetic-acoustic transducer (EMAT) for detection of condenser stainless steel bellows | |
| CN107421474B (en) | Electromagnetic ultrasonic thickness measuring probe for measuring thickness of workpiece | |
| KR20140036430A (en) | Pipeline inspection apparatus and pipeline inspection system | |
| CN102520063B (en) | In-service testing and evaluating method and system of coiled tubing | |
| CN110152963A (en) | A kind of periodic permanent magnet iron formula omni-directional horizontal shear mode Electromagnetic Acoustic Transducer | |
| CN104076094A (en) | Ultrasonic transduction probe for exciting and receiving ultrasonic horizontal shear guide wave | |
| CN107132283B (en) | Longitudinal wave mode electromagnetic ultrasonic pipeline internal detection spiral guided wave transducer | |
| CN204008561U (en) | Guided wave sensor based on magnetostrictive effect | |
| CN108663432B (en) | Device for detecting tiny defects of pipeline and method for detecting centers and diameters of defects | |
| CN207908434U (en) | A kind of multifunctional combination probe for pipeline detection | |
| CN103712548B (en) | A kind of channel bend Pulsed eddy current testing device | |
| KR102358685B1 (en) | System for monitoring wall-thinning of pipe | |
| CN209624492U (en) | A kind of novel magnetic striction wave guide scanning sensor |
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: 20150128 Termination date: 20180828 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |