CN107327713A - The ultrasound damage device and method of a kind of water supply line - Google Patents
The ultrasound damage device and method of a kind of water supply line Download PDFInfo
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- CN107327713A CN107327713A CN201710556818.5A CN201710556818A CN107327713A CN 107327713 A CN107327713 A CN 107327713A CN 201710556818 A CN201710556818 A CN 201710556818A CN 107327713 A CN107327713 A CN 107327713A
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- pipeline
- piezoelectric ceramic
- ceramic piece
- signal
- feedback wave
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
Abstract
The invention discloses the ultrasound damage device and method of a kind of water supply line：Including two piezoelectric ceramic pieces, one of piezoelectric ceramic piece connects oscillograph, another piezoelectric ceramic piece connection supersonic generator, supersonic generator connection PC；Every pipeline inner filling water；Every pipeline outer wall sets two piezoelectric ceramic pieces respectively, and a piezoelectric ceramic piece receives the excitation ultrasonic signal of supersonic generator, transmits to another piezoelectric ceramic piece, be transferred to oscillograph；The feedback wave signal received to oscillograph carries out data analysis, judges that the duct section between every group of piezoelectric ceramic piece has not damaged；Complete once to survey after damage, repeat above-mentioned, every pipeline is detected paragraph by paragraph, until the detection of every pipeline is completed, and the degree of injury between the different pipelines of com-parison and analysis.Error that the present invention compensate for the detection method that presently, there are is big, the low and most detection of precision is directed to the defect of the pipeline for having resulted in leakage.
Description
Technical field
It is that the ultrasound for being related to a kind of water supply line damages dress in particular the present invention relates to a kind of device and method
Put and method.
Background technology
In urban water supply and sewerage pipe network, pipeline is very important transfer of support equipment, but is due to that a variety of causes all can
Certain corrosion, erosion etc. is caused so as to cause the serious problems such as further mechanical breakdown and pipeline break leakage, not only can
Cause certain economic loss, and the danger of the catastrophic event such as potential blast.Therefore, the inspection revealed for pipe damage
Survey, for municipal water and wastewater engineering, or even petroleum industry, natural gas delivery industry etc. all have very great meaning.
So far, the leakage phenomenon of pipeline has caused the great attention of relevant departments and associated construction unit, and
There are many R＆D institutions that the research to pipe damage leak detection technology has been carried out, and part has been subjected to seriously
Damaged pipeline has installed the relevant device of corresponding detection damage leakage.These apparatus are to avoiding pipe damage
The further expansion of leakage accident serves highly important effect.So far, general monitoring method is mainly based upon pipe
Pressure, changes in flow rate, ultrasonic wave and the leakage field technology of road internal flow judges whether leakage accident.
The problem of still having at present is that still numerous studies are detected for having formed the pipeline of leakage, and is neglected
Depending on having had been subjected to corroding damaged, but still the potential danger aspect of leakage is not formed, and detection device detects pipeline
The transmitter-receiver device used is substantially to be installed around conduit ring-shaped, is wasted time and energy, cost is higher.In the detection, it is overall
Around the transmitter-receiver device of tube shaped, deposit interference between the signals and cover, it is impossible to accurately extract leakage
Signal, error is larger.
The content of the invention
The invention aims to overcome deficiency of the prior art, for having had resulted in the pipe damages such as erosion,
But not causing the pipeline of leakage yet, there is provided a kind of simple and effective, the ultrasound damage device of accurate detailed water supply line and side
Method, installs transmitting and receiving detection device using the new corresponding piezoelectric ceramic piece of single-point, uses ultrasound examination water supply network
Pipe damage health condition, the error of detection method that compensate for presently, there are is big, the low and most detection of precision is for having made
Into the defect of the pipeline of leakage.
The purpose of the present invention can be achieved through the following technical solutions.
A kind of ultrasound damage device of water supply line, is made up of device body, and described device body includes two piezoelectricity
Potsherd, one of piezoelectric ceramic piece is connected with oscillograph by signal wire, and another piezoelectric ceramic piece is connected by signal wire
Supersonic generator is connected to, the supersonic generator is connected with PC.
The purpose of the present invention can be also achieved through the following technical solutions.
A kind of ultrasound damage method of the water supply line based on described device, comprises the following steps：
Step one, water will be respectively filled with inside every pipeline；
Step 2, distinguishes single-point two piezoelectric ceramic pieces of setting, the company of every group of piezoelectric ceramic piece on every pipeline outer wall
Line is parallel with the axis of pipeline, and a piezoelectric ceramic piece receives the excitation ultrasonic signal of supersonic generator transmitting, through pipe
Road is transmitted to another piezoelectric ceramic piece, and oscillograph is transferred to by signal wire；
Step 3, the feedback wave signal received to oscillograph carries out Data Management Analysis, judges every group of piezoelectric ceramic piece
Between duct section have not damaged：If feedback wave signal magnitude is identical with pumping signal size, illustrate two piezoelectric ceramic pieces
Between duct section not damaged hole；If feedback wave signal illustrates the pipe between two piezoelectric ceramic pieces compared with pumping signal reduction
Road section has damage hole；
Step 4, completes once to survey after damage, repeated the above steps two and step 3, and every pipeline is detected paragraph by paragraph,
Until the detection of every pipeline is completed, and the degree of injury between the different pipelines of com-parison and analysis.
The spacing of every group of piezoelectric ceramic piece described in step 2 is 12cm, is divided successively from one end of pipeline to the other end
Section detection.
Described in step 2 encourage ultrasonic signal be sinusoidal signal, tranmitting frequency be 20kHz~100kHz, amplitude for ±
5v~± 10v.
The comparison principle of degree of injury described in step 4 between different pipelines：Identical excitation ultrasonic signal strength
Under, the feedback wave signal amplitude of integral conduit is maximum, and the feedback wave signal amplitude of the pipeline for the damage that suffered erosion substantially subtracts
It is small, and with the increase of erosion degree, feedback wave signal amplitude also increases accordingly, but not more than the feedback wave of integral conduit
Signal amplitude；Under different exciting ultrasonic signal strength, for integral conduit, excitation ultrasonic signal voltage magnitude reduces, instead
Feedback ripple signal amplitude is obviously reduced, and the pipeline for having corroded a little, and the same excitation ultrasonic signal voltage magnitude that presents subtracts
It is small, the rule that feedback wave signal amplitude reduces, and be that pipeline point corrosion pit is deeper, feedback wave signal maximum voltage amplitude increases on the contrary
Greatly.
Compared with prior art, the beneficial effect that technical scheme is brought is：
(1) two piezoelectric ceramic pieces are installed using single-point correspondence in the present invention, and unconventional annular is installed, efficiently letter
Just, it is easily controlled, and farthest accurate testing result, the potential danger at utmost avoiding existing due to leakage
Occur, be satisfied with the demand in current market, it is adaptable to various engineering fields；
(2) in the present invention, a piezoelectric ceramic piece receives the excitation ultrasonic signal of supersonic generator, is transmitted through pipeline
To another piezoelectric ceramic piece, oscillograph is transferred to, feedback wave signal is shown, it is main to enter material internal using when ultrasonic wave
It can reflect or scatter when running into defect, by the measurement and analysis to reflecting or projecting waveform, enter with incident waveform
Row com-parison and analysis, and then determine there is not damaged, and the degree of injury between relatively more different pipelines；
(3) present invention uses ultrasonic technology, and to pipeline, defect is tested and analyzed caused by burn into damage, crackle etc.；
The developing direction of ultrasonic detection technology is to be directed to specific site of deployment, is customized ultrasonic detecting equipment.
Brief description of the drawings
Fig. 1 is the operation principle schematic diagram of the present invention；
Fig. 2 is the arrangement top view of every group of piezoelectric ceramic piece in the present invention.
Reference:1 pipeline；2 piezoelectric ceramic pieces；3 supersonic generators；
4PC machines；5 oscillographs；6 damage holes.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Pipeline 1 suffers erosion equivalent damage defect, in the case where being not enough to cause leakage, is a kind of extremely serious potential
Danger, thus to the detection of the damage defect of pipeline 1 for the security of piped water supply it is very necessary.It is contemplated that maximum
The security performance of pipeline 1 is detected to limit in advance, potential danger is eliminated to greatest extent, so for the application of detection technique
For, research of the invention has more practical application and applies generality.So the pipe of present invention selection Injured level
Road 1 (damage hole depth is not less than tubing wall thickness), is target detection thing, carries out the device of ultrasound examination damage defect technology
And the research of method.
The present invention relates to a kind of ultrasound damage device of water supply line, it is made up of device body, as depicted in figs. 1 and 2,
Described device body includes two piezoelectric ceramic pieces 2, and one of piezoelectric ceramic piece 2 is connected with oscillograph 5 by signal wire, separately
One piezoelectric ceramic piece 2 is connected with supersonic generator 3 by signal wire, and the supersonic generator 3 is connected with PC 4.Make
Used time, two single-points of piezoelectric ceramic piece 2 are arranged on the outer wall of pipeline 1, the control transmitting excitation ultrasound of supersonic generator 3 of PC 4
Ripple signal, through piezoelectric ceramic piece 2 and pipeline 1, oscillograph 5 receives feedback wave signal, shown.
The ultrasound damage method of water supply line based on said apparatus, the present invention is using transmitting different frequency and different width
It is worth the ultrasonic testing signals of intensity, acts on some numbering pipelines 1 of Injured level, then received according to oscillograph 5
The feedback wave signal arrived, carries out corresponding Treatment Analysis, specifically includes following steps respectively：
Step one, water will be respectively filled with inside some pipelines 1, and the numbering such as A, B, C is carried out to pipeline 1.
Step 2, single-point is distinguished on the every outer wall of pipeline 1 and sets two piezoelectric ceramic pieces 2, every group of piezoelectric ceramic piece 2
Line is parallel with the axis of pipeline 1 where it, and one of piezoelectric ceramic piece 2 receives the excitation that supersonic generator 3 is launched
Ultrasonic signal, transmits to another piezoelectric ceramic piece 2 through pipeline 1, oscillograph 5 is transferred to by signal wire, show feedback
Ripple signal.Wherein, the spacing of every group of piezoelectric ceramic piece 2 is 12cm, and carrying out segmentation successively to the other end from one end of pipeline 1 examines
Survey.The excitation ultrasonic signal is sinusoidal signal, and tranmitting frequency is 20kHz~100kHz, and amplitude is ± 5v~± 10v.
Step 3, the 5 feedback wave signals received are connect to oscillograph and carry out Data Management Analysis, every group of piezoelectric ceramic piece is judged
Duct section between 2 has not damaged：If feedback wave signal magnitude and pumping signal size are essentially identical, illustrate two piezoelectricity potteries
Duct section not damaged hole 6 between ceramics 2；If feedback wave signal is substantially reduced compared with pumping signal, illustrate two piezoelectric ceramics
Duct section between piece 2 has damage hole 6.
Step 4, completes once to survey after damage, repeated the above steps two and step 3, and every pipeline 1 is detected paragraph by paragraph,
Until the detection of every pipeline 1 is completed, and the degree of injury situation between relatively more different pipelines 1：Identical excitation ultrasonic signal
Under intensity, the feedback wave signal amplitude of integral conduit 1 is maximum, and the feedback wave signal amplitude of the pipeline 1 for the damage that suffered erosion
It is obviously reduced, and with the increase of erosion degree, feedback wave signal amplitude also increases accordingly, but not more than integral conduit 1
Feedback wave signal amplitude.Under different exciting ultrasonic signal strength, for integral conduit 1, excitation ultrasonic signal voltage amplitude
Value reduces, and feedback wave signal amplitude is obviously reduced, and the pipeline 1 for having corroded a little, same that excitation ultrasonic signal is presented
Voltage magnitude reduces, the rule that feedback wave signal amplitude reduces, and is that the point corrosion pit of pipeline 1 is deeper, the maximum electricity of feedback wave signal
Pressure amplitude value slightly increases on the contrary.Further, since the emitting voltage amplitude of supersonic generator 3 is doubled, feedback wave signal is maximum
Voltage magnitude does not have equal proportion increase, illustrates that both have and obvious associate but be not linear correlation.
Embodiment one：
The ultrasound damage method of water supply line, comprises the following steps：
Step one, three DN150 ductile iron pipelines 1, respectively label A, B, C, and will be each filled with inside three pipelines 1 are taken
Running water.
Step 2, single-point sets two piezoelectric ceramic pieces 2 on tri- outer walls of pipeline 1 of A, B, C, every group of piezoelectric ceramic piece
Spacing is 12cm, and one of piezoelectric ceramic piece 2 receives the excitation ultrasonic signal that supersonic generator 3 is launched, excitation ultrasound
The tranmitting frequency of ripple signal is 20kHz, and amplitude is ± 5v, is transmitted through pipeline 1 to another piezoelectric ceramic piece 2, passes through signal wire
Oscillograph 5 is transferred to, feedback wave signal is shown.
Step 3, the feedback wave signal received to oscillograph 5 carries out Data Management Analysis, judges every group of piezoelectric ceramic piece
Duct section between 2 has not damaged.
Step 4, after completing once to survey and damaging, repeat the above steps two and step 3, respectively from the one end of pipeline 1 to the other end
Segmentation detection successively is carried out, until completing the detection of tri- pipelines of A, B, C, and compares the damage journey between tri- pipelines 1 of A, B, C
Degree situation.
Embodiment two：
The ultrasound damage method of water supply line, comprises the following steps：
Step one, three DN150 ductile iron pipelines 1, respectively label A, B, C, and will be each filled with inside three pipelines 1 are taken
Running water.
Step 2, single-point sets two piezoelectric ceramic pieces 2, every group of piezoelectric ceramic piece 2 on tri- outer walls of pipeline 1 of A, B, C
Spacing be 12cm, one of piezoelectric ceramic piece 2 receives the excitation ultrasonic signal that supersonic generator 3 is launched, and excitation is super
The tranmitting frequency of acoustic signals is 20kHz, and amplitude is ± 10v, is transmitted through pipeline 1 to another piezoelectric ceramic piece 2, passes through signal
Line is transferred to oscillograph 5, shows feedback wave signal.
Step 3, the feedback wave signal received to oscillograph 5 carries out Data Management Analysis, judges every group of piezoelectric ceramic piece
Duct section between 2 has not damaged.
Step 4, after completing once to survey and damaging, repeat the above steps two and step 3, respectively from the one end of pipeline 1 to the other end
Segmentation detection successively is carried out, until completing the detection of tri- pipelines of A, B, C, and compares the damage journey between tri- pipelines of A, B, C
Degree situation.
Embodiment three：
The ultrasound damage method of water supply line, comprises the following steps：
Step one, three DN150 ductile iron pipelines 1, respectively label A, B, C, and will be each filled with inside three pipelines 1 are taken
Running water.
Step 2, single-point sets two piezoelectric ceramic pieces 2 on tri- pipeline outer walls of A, B, C, every group of piezoelectric ceramic piece 2
Spacing is 12cm, and one of piezoelectric ceramic piece 2 receives the excitation ultrasonic signal that supersonic generator 3 is launched, excitation ultrasound
The tranmitting frequency of ripple signal is 100kHz, and amplitude is ± 5v, is transmitted through pipeline 1 to another piezoelectric ceramic piece 2, passes through signal wire
Oscillograph 5 is transferred to, feedback wave signal is shown.
Step 3, the feedback wave signal received to oscillograph 5 carries out Data Management Analysis, judges every group of piezoelectric ceramic piece
Duct section between 2 has not damaged.
Step 4, after completing once to survey and damaging, repeat the above steps two and step 3, respectively from the one end of pipeline 1 to the other end
Segmentation detection successively is carried out, until completing the detection of tri- pipelines of A, B, C, and compares the damage journey between tri- pipelines of A, B, C
Degree situation.
Example IV：
The ultrasound damage method of water supply line, comprises the following steps：
Step one, three DN150 ductile iron pipelines 1, respectively label A, B, C, and will be each filled with inside three pipelines 1 are taken
Running water.
Step 2, single-point sets two piezoelectric ceramic pieces 2, every group of piezoelectric ceramic piece 2 on tri- outer walls of pipeline 1 of A, B, C
Spacing be 12cm, one of piezoelectric ceramic piece 2 receives the excitation ultrasonic signal that supersonic generator 3 is launched, and excitation is super
The tranmitting frequency of acoustic signals is 100kHz, and amplitude is ± 10v, is transmitted through pipeline 1 to another piezoelectric ceramic piece 2, passes through letter
Number line is transferred to oscillograph 5, shows feedback wave signal.
Step 3, the feedback wave signal received to oscillograph 5 carries out Data Management Analysis, judges every group of piezoelectric ceramic piece
Duct section between 2 has not damaged.
Step 4, after completing once to survey and damaging, repeat the above steps two and step 3, respectively from the one end of pipeline 1 to the other end
Segmentation detection successively is carried out, until completing the detection of tri- pipelines of A, B, C, and compares the damage journey between tri- pipelines of A, B, C
Degree situation.
Embodiment five：
The ultrasound damage method of water supply line, comprises the following steps：
Step one, three DN150 ductile iron pipelines 1, respectively label A, B, C, and will be each filled with inside three pipelines 1 are taken
Running water.
Step 2, single-point sets two piezoelectric ceramic pieces 2, every group of piezoelectric ceramic piece 2 on tri- outer walls of pipeline 1 of A, B, C
Spacing be 12cm, one of piezoelectric ceramic piece 2 receives the excitation ultrasonic signal that supersonic generator 3 is launched, and excitation is super
The tranmitting frequency of acoustic signals is 50kHz, and amplitude is ± 7.5v, is transmitted through pipeline 1 to another piezoelectric ceramic piece 2, passes through letter
Number line is transferred to oscillograph 5, shows feedback wave signal.
Step 3, the feedback wave signal received to oscillograph 5 carries out Data Management Analysis, judges every group of piezoelectric ceramic piece
Duct section between 2 has not damaged.
Step 4, after completing once to survey and damaging, repeat the above steps two and step 3, respectively from the one end of pipeline 1 to the other end
Segmentation detection successively is carried out, until completing the detection of tri- pipelines of A, B, C, and compares the damage journey between tri- pipelines of A, B, C
Degree situation.
It can be seen that according to the testing result of above-described embodiment：Under identical excitation ultrasonic signal strength, integral conduit 1
Feedback wave signal amplitude is maximum, and the feedback wave signal amplitude of the pipeline 1 for the damage that suffered erosion is obviously reduced, and with erosion
The increase of degree, feedback wave signal amplitude also increases accordingly, but not more than the feedback wave signal amplitude of integral conduit 1.No
With under excitation ultrasonic signal strength, for integral conduit 1, excitation ultrasonic signal voltage magnitude reduces, feedback wave signal width
Value is obviously reduced, and the pipeline 1 for having corroded a little, and the same excitation ultrasonic signal voltage magnitude that presents reduces, feedback wave
The rule that signal amplitude reduces, and be that pipeline point corrosion pit is deeper, feedback wave signal maximum voltage amplitude slightly increases on the contrary.This
Outside, because the emitting voltage amplitude of supersonic generator 3 is doubled, feedback wave signal maximum voltage amplitude does not have equal proportion increasing
Plus, illustrate that both have and obvious associate but be not linear correlation.
Although the function and the course of work of the present invention are described above in conjunction with accompanying drawing, the invention is not limited in
Above-mentioned concrete function and the course of work, above-mentioned embodiment are only schematical, rather than restricted, ability
The those of ordinary skill in domain is not departing from present inventive concept and scope of the claimed protection situation under the enlightenment of the present invention
Under, many forms can also be made, these are belonged within the protection of the present invention.
Claims (5)
1. a kind of ultrasound damage device of water supply line, is made up of device body, it is characterised in that described device body includes
Two piezoelectric ceramic pieces (2), one of piezoelectric ceramic piece (2) is connected with oscillograph (5), another piezoelectricity pottery by signal wire
Ceramics (2) is connected with supersonic generator (3) by signal wire, and the supersonic generator (3) is connected with PC (4).
2. a kind of ultrasound damage method of the water supply line based on claim 1 described device, it is characterised in that including following
Step：
Step one, water will be respectively filled with inside every pipeline (1)；
Step 2, distinguishes single-point two piezoelectric ceramic pieces (2) of setting, every group of piezoelectric ceramic piece (2) on every pipeline (1) outer wall
Line it is parallel with the axis of pipeline (1), the excitation that piezoelectric ceramic piece (2) receives supersonic generator (3) transmitting surpasses
Acoustic signals, transmit to another piezoelectric ceramic piece (2) through pipeline (1), oscillograph (5) are transferred to by signal wire；
Step 3, the feedback wave signal received to oscillograph (5) carries out Data Management Analysis, judges every group of piezoelectric ceramic piece
(2) duct section between has not damaged：If feedback wave signal magnitude is identical with pumping signal size, illustrate two piezoelectric ceramics
Duct section not damaged hole (6) between piece (2)；If feedback wave signal illustrates two piezoelectric ceramic pieces compared with pumping signal reduction
(2) duct section between has damage hole (6)；
Step 4, completes once to survey after damage, repeat the above steps two and step 3, every pipeline (1) is detected paragraph by paragraph, directly
Degree of injury to the detection for completing every pipeline (1), and the different pipelines (1) of com-parison and analysis.
3. the ultrasound damage method of water supply line according to claim 2, it is characterised in that every group described in step 2
The spacing of piezoelectric ceramic piece (2) is 12cm, and carrying out segmentation successively to the other end from one end of pipeline (1) detects.
4. the ultrasound damage method of water supply line according to claim 2, it is characterised in that encouraged described in step 2
Ultrasonic signal is sinusoidal signal, and tranmitting frequency is 20kHz~100kHz, and amplitude is ± 5v~± 10v.
5. the ultrasound damage method of water supply line according to claim 2, it is characterised in that different described in step 4
The comparison principle of degree of injury between pipeline (1)：Under identical excitation ultrasonic signal strength, the feedback wave of integral conduit (1)
Signal amplitude is maximum, and the feedback wave signal amplitude of the pipeline (1) for the damage that suffered erosion is obviously reduced, and with erosion degree
Increase, feedback wave signal amplitude also increases accordingly, but not more than the feedback wave signal amplitude of integral conduit (1)；It is different
Under excitation ultrasonic signal strength, for integral conduit (1), excitation ultrasonic signal voltage magnitude reduces, feedback wave signal width
Value is obviously reduced, and the pipeline (1) for having corroded a little, and the same excitation ultrasonic signal voltage magnitude that presents reduces, feedback
The rule that ripple signal amplitude reduces, and be that pipeline point corrosion pit is deeper, feedback wave signal maximum voltage amplitude increases on the contrary.
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| CN201710556818.5A CN107327713A (en) | 2017-07-10 | 2017-07-10 | The ultrasound damage device and method of a kind of water supply line |
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| CN107958104A (en) * | 2017-11-08 | 2018-04-24 | 天津大学 | By open GIS and the management of database sharing water supply network and hydraulic model method |
| CN111322524A (en) * | 2020-03-02 | 2020-06-23 | 周红 | Safety detection method, device and detection equipment for drilling platform |
| GB2580176A (en) * | 2018-12-24 | 2020-07-15 | Edwards Ltd | Method and apparatus for leak point detection |
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| GB2580176A (en) * | 2018-12-24 | 2020-07-15 | Edwards Ltd | Method and apparatus for leak point detection |
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