CN108760881A - A kind of kelly bar detection method based on supersonic guide-wave - Google Patents
A kind of kelly bar detection method based on supersonic guide-wave Download PDFInfo
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- CN108760881A CN108760881A CN201810500012.9A CN201810500012A CN108760881A CN 108760881 A CN108760881 A CN 108760881A CN 201810500012 A CN201810500012 A CN 201810500012A CN 108760881 A CN108760881 A CN 108760881A
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- kelly bar
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/4409—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison
- G01N29/4427—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison with stored values, e.g. threshold values
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/48—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by amplitude comparison
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
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- Immunology (AREA)
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The kelly bar detection method based on supersonic guide-wave that the invention discloses a kind of, includes the following steps：The phase velocity and group velocity dispersion curve of kelly bar are calculated by the method for semi-analytic finite elemen；On dispersion curve in relatively straight range, selection excitation mode and driving frequency；Arrange that stimulus sensor, the other end arrange receiving sensor in one end of kelly bar；Signal generator generates the pulse signal of frequency centered on driving frequency and excites required mode and frequency ultrasound guided wave in kelly bar by power amplifier input stimulus sensor；Frequency ultrasound guided wave is propagated in kelly bar, is received by receiving sensor, and is delivered to oscillograph and is shown, the amplitude A of signal is obtainedt；Transmission coefficient is calculated, then by the transmission coefficient t of tested kelly bardWith the transmission coefficient t of lossless kelly bar0It is compared.The present invention can both detect specimen surface defect, and sample internal injury can also be detected and be assessed.
Description
Technical field
The present invention relates to a kind of detection methods of kelly bar, and in particular to a kind of kelly bar detection side based on supersonic guide-wave
Method.
Background technology
Kelly bar is one of the critical piece for forming drilling machine drill string, and major function is that the rotation of turntable is become entire drill string
With the rotation of drill bit, with broken formation.In drilling process, kelly bar plays to be transmitted torque and bears drill string total weight drilling tool
Effect, for a long time under the action of adverse circumstances and complex load, it is easy to the defects of burn into crackle occur.If examining not in time
It surveys, fracture accident may occur in underground, cause huge economic loss.Therefore, just seem particularly to the detection of kelly bar
It is necessary and urgent.
Currently, the detection method of kelly bar, the method for being mainly based upon ultrasonic bulk wave.Such as, dagger-axe seapeak is in document《Kelly bar
Whole detection》It has reported for work and kelly bar has been detected using the method for conventional ultrasound longitudinal wave.Ultrasound inspection based on bulk wave in this
Survey method after having detected a point, needs, along drilling rod, sensor to be moved to next using point-to-point detection mode
Point, inefficiency.In addition, since detection zone is small, it be easy to cause missing inspection.
Invention content
To solve the above problems, the present invention provides a kind of kelly bar detection method based on supersonic guide-wave, in kelly bar
In, the energy of guided wave can overcome the deficiency based on ultrasonic longitudinal wave method, both with drill with ferrule rod structure long range, fast propagation
Specimen surface defect can be detected, sample internal injury can also be detected and be assessed.
To achieve the above object, the technical solution that the present invention takes is：
A kind of kelly bar detection method based on supersonic guide-wave, includes the following steps：
S1. the physical parameter and geometric parameter according to kelly bar test specimen to be detected passes through the method for semi-analytic finite elemen, meter
Calculate the phase velocity and group velocity dispersion curve of kelly bar；
S2. according to the dispersion curve calculated in S1, on dispersion curve in relatively straight range, selection excitation mode
And driving frequency；
S3. it arranges stimulus sensor in one end of kelly bar test specimen to be detected, receiving sensor is arranged in the other end；
S4. signal generator generates the pulse signal of some cycles of frequency centered on driving frequency, is put by power
Big device is input to stimulus sensor, and required mode and frequency ultrasound guided wave are excited in kelly bar；The frequency ultrasound is led
Wave is propagated in kelly bar test specimen to be detected, and is received by receiving sensor；
S5. the signal received is delivered to oscillograph and shown by receiving sensor, obtains the amplitude A of signalt；Then
Utilize formula Td=At/A0Calculate transmission coefficient, wherein TdIndicate the transmission coefficient for being tested kelly bar, AtThe width of receiving end signal
Value, A0Indicate the amplitude of pumping signal；
S6. by the transmission coefficient t of tested kelly bardWith the transmission coefficient t of lossless kelly bar0It is compared, if Td=T0Then
Zero defect inside kelly bar；If Td<T0, then existing defects inside kelly bar.
Preferably, using the transmission coefficient of supersonic guide-wave, detection and evaluation to kelly bar internal flaw are realized.
Preferably, according to the wave structure of selected excitation point, suitable sensor is selected, is encouraged in drill with ferrule rod structure
Supersonic guide-wave.
In above-mentioned steps S1, since kelly bar endoporus is round, outer surface is rectangular, and the method for being difficult to adopt parsing goes to solve
The dispersion curve of drill with ferrule rod structure, and it is a kind of effectively dispersion curve method for solving to use semi analytic-finite element, therefore can
The phase velocity and group velocity dispersion curve of kelly bar are calculated in the method by semi-analytic finite elemen.
In above-mentioned steps S2, in phase velocity and group velocity dispersion curve in straight segment limit, the mode of excitation is selected
And frequency；The guided wave modal frequency dispersion of straight segment limit is smaller, is suitble to detect over long distances.
In above-mentioned steps S3, according to the wave structure of selected excitation point, suitable sensor is selected, in kelly bar knot
Supersonic guide-wave is encouraged in structure.
In said program, according to the phase velocity and group velocity dispersion curve of kelly bar, the guided wave modal for selecting frequency dispersion small is made
For pumping signal, supersonic guide-wave is motivated in kelly bar, by the transmission coefficient t of tested kelly bardIt is saturating with lossless kelly bar
Penetrate coefficient T0It is compared, realizes the detection to kelly bar.Relative to the point-to-point longitudinal wave supersonic detection method of tradition, based on super
The kelly bar detection method of guided Waves has many advantages, such as that efficient, detection speed is fast, testing cost is low, accuracy in detection is high.
Description of the drawings
Fig. 1 is the structural schematic diagram of kelly bar detection device of the embodiment of the present invention based on supersonic guide-wave.
Fig. 2 is kelly bar dispersion curve schematic diagram.
Specific implementation mode
In order to make objects and advantages of the present invention be more clearly understood, the present invention is carried out with reference to embodiments further
It is described in detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit this hair
It is bright.
As described in Figure 1, the kelly bar detection device based on supersonic guide-wave that the present invention provides a kind of, including signal generator
1, power amplifier 2, receiving sensor 6 and oscillograph 9；The signal generator 1 for generate required excitation mode with
Frequency is amplified by power amplifier 2, is coupled in kelly bar 3 by stimulus sensor 4, is generated in kelly bar 3 super
Guided Waves wave packet 5 is received sensor 6 and is received, the signal received passes through amplifier when supersonic guide-wave travels to receiving terminal
After 8 amplifications, it is sent to oscillograph 9 and carries out display and subsequent processing.Wherein, in Fig. 1,7 be the cross section of kelly bar.
The kelly bar detection method based on supersonic guide-wave that the present invention also provides a kind of, includes the following steps：
S1. the physical parameter and geometric parameter according to kelly bar test specimen to be detected passes through the method for semi-analytic finite elemen, meter
Calculate the phase velocity and group velocity dispersion curve (as shown in Figure 2) of kelly bar；
S2. according to the dispersion curve calculated in S1, on dispersion curve in relatively straight range, selection excitation mode
And driving frequency；
S3. it arranges stimulus sensor in one end of kelly bar test specimen to be detected, receiving sensor is arranged in the other end；
S4. signal generator generates the pulse signal of some cycles of frequency centered on driving frequency, is put by power
Big device is input to stimulus sensor, and required mode and frequency ultrasound guided wave are excited in kelly bar；The frequency ultrasound is led
Wave encounters defect when being propagated in kelly bar test specimen to be detected and will produce reflection and scattering, is passed when being transmitted to receiving terminal by receiving
Sensor receives；
S5. the signal received is delivered to oscillograph and shown by receiving sensor, obtains the amplitude A of signalt；Then
Utilize formula Td=At/A0Calculate transmission coefficient, wherein TdIndicate the transmission coefficient for being tested kelly bar, AtThe width of receiving end signal
Value, A0Indicate the amplitude of pumping signal；
S6. by the transmission coefficient t of tested kelly bardWith the transmission coefficient t of lossless kelly bar0It is compared, if Td=T0Then
Zero defect inside kelly bar；If Td<T0, then existing defects inside kelly bar.
Phase velocity and group velocity dispersion curve of the present invention according to kelly bar, the guided wave modal for selecting frequency dispersion small is as excitation
Signal motivates supersonic guide-wave in kelly bar, by the transmission coefficient of the transmission coefficient t d and lossless kelly bar of tested kelly bar
T0 is compared, and realizes the detection to kelly bar.Relative to the point-to-point longitudinal wave supersonic detection method of tradition, it is based on supersonic guide-wave
Kelly bar detection method, have many advantages, such as that efficient, detection speed is fast, testing cost is low, accuracy in detection is high.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, it can also make several improvements and retouch, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (3)
1. a kind of kelly bar detection method based on supersonic guide-wave, which is characterized in that include the following steps：
S1. the physical parameter and geometric parameter according to kelly bar test specimen to be detected are calculated by the method for semi-analytic finite elemen
The phase velocity and group velocity dispersion curve of kelly bar；
S2. according to the dispersion curve calculated in S1, on dispersion curve in relatively straight range, selection encourages mode and swashs
Encourage frequency；
S3. it arranges stimulus sensor in one end of kelly bar test specimen to be detected, receiving sensor is arranged in the other end；
S4. signal generator generates the pulse signal of some cycles of frequency centered on driving frequency, passes through power amplifier
It is input to stimulus sensor, required mode and frequency ultrasound guided wave are excited in kelly bar；The frequency ultrasound guided wave exists
It propagates in kelly bar test specimen to be detected, is received by receiving sensor；
S5. the signal received is delivered to oscillograph and shown by receiving sensor, obtains the amplitude A of signalt；Then it utilizes
Formula Td=At/A0Calculate transmission coefficient, wherein TdIndicate the transmission coefficient for being tested kelly bar, AtThe amplitude of receiving end signal, A0
Indicate the amplitude of pumping signal；
S6. by the transmission coefficient t of tested kelly bardWith the transmission coefficient t of lossless kelly bar0It is compared, if Td=T0Then drill with ferrule
Zero defect inside bar；If Td<T0, then existing defects inside kelly bar.
2. a kind of kelly bar detection method based on supersonic guide-wave according to claim 1, which is characterized in that utilize ultrasound
The transmission coefficient of guided wave realizes detection and evaluation to kelly bar internal flaw.
3. a kind of kelly bar detection method based on supersonic guide-wave according to claim 1, which is characterized in that according to selected
The wave structure of the excitation point taken, selects suitable sensor, supersonic guide-wave is encouraged in drill with ferrule rod structure.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109579751A (en) * | 2018-11-30 | 2019-04-05 | 西安科技大学 | A kind of detection method and device of the shield machine cutter abrasion amount based on sound emission |
| CN110319947A (en) * | 2019-08-09 | 2019-10-11 | 大连理工大学 | Based on etc. temperature buoyancy effect profiled-cross-section structure temperature monitoring method |
| CN110530983A (en) * | 2019-09-20 | 2019-12-03 | 济源职业技术学院 | Ultrasonic wave detecting system and method for oil drilling tools sucker rod |
| CN110658261A (en) * | 2019-10-10 | 2020-01-07 | 天津科技大学 | Structural health monitoring frequency selection method based on ultrasonic guided waves |
| CN110887898A (en) * | 2019-12-06 | 2020-03-17 | 西安科技大学 | Square tube detection method and device based on ultrasonic guided waves |
| CN113804134A (en) * | 2021-09-22 | 2021-12-17 | 北京航空航天大学 | Radial maximum corrosion depth detection method and system for cylindrical structural component |
| CN115560890A (en) * | 2022-10-11 | 2023-01-03 | 北京工业大学 | Steel strand prestress identification method based on ultrasonic guided wave energy leakage ratio |
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2018
- 2018-05-23 CN CN201810500012.9A patent/CN108760881A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109579751A (en) * | 2018-11-30 | 2019-04-05 | 西安科技大学 | A kind of detection method and device of the shield machine cutter abrasion amount based on sound emission |
| CN110319947A (en) * | 2019-08-09 | 2019-10-11 | 大连理工大学 | Based on etc. temperature buoyancy effect profiled-cross-section structure temperature monitoring method |
| CN110530983A (en) * | 2019-09-20 | 2019-12-03 | 济源职业技术学院 | Ultrasonic wave detecting system and method for oil drilling tools sucker rod |
| CN110658261A (en) * | 2019-10-10 | 2020-01-07 | 天津科技大学 | Structural health monitoring frequency selection method based on ultrasonic guided waves |
| CN110887898A (en) * | 2019-12-06 | 2020-03-17 | 西安科技大学 | Square tube detection method and device based on ultrasonic guided waves |
| CN113804134A (en) * | 2021-09-22 | 2021-12-17 | 北京航空航天大学 | Radial maximum corrosion depth detection method and system for cylindrical structural component |
| CN113804134B (en) * | 2021-09-22 | 2022-09-16 | 北京航空航天大学 | Anchor radial maximum corrosion depth detection method and system based on high-frequency dispersive ultrasonic guided waves |
| CN115560890A (en) * | 2022-10-11 | 2023-01-03 | 北京工业大学 | Steel strand prestress identification method based on ultrasonic guided wave energy leakage ratio |
| CN115560890B (en) * | 2022-10-11 | 2024-01-09 | 北京工业大学 | Steel strand prestress identification method based on ultrasonic guide wave energy leakage ratio |
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