CN108490071A - The on-line monitoring and real time health diagnostic method and equipment of a kind of pressure vessel damage - Google Patents
The on-line monitoring and real time health diagnostic method and equipment of a kind of pressure vessel damage Download PDFInfo
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- CN108490071A CN108490071A CN201810219448.0A CN201810219448A CN108490071A CN 108490071 A CN108490071 A CN 108490071A CN 201810219448 A CN201810219448 A CN 201810219448A CN 108490071 A CN108490071 A CN 108490071A
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- damage
- pressure vessel
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- open circles
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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
- G01N29/048—Marking the faulty objects
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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
- G01N2291/26—Scanned objects
- G01N2291/269—Various geometry objects
- G01N2291/2695—Bottles, containers
Abstract
The present invention relates to a kind of on-line monitoring of pressure vessel damage and real time health diagnostic method and equipment, pressure vessel is decomposed into open circles shell of column cylinder and hollow ball shape end socket by the method, carries out damage diagnosis positioning to the open circles shell of column cylinder and hollow ball shape end socket respectively based on coordinate transform and damage is shown；The equipment includes the first signal transducer being arranged on open circles shell of column cylinder, the second signal sensor, matrix switch, oscillograph, amplifier, function generator and the computer that are arranged on hollow ball shape end socket, computer is separately connected oscillograph and function generator, amplifier and function generator connects, matrix switch one end is separately connected the first signal transducer and second signal sensor, the other end is separately connected amplifier and oscillograph, and different excitation RX paths are realized by the automatic switchover of matrix switch.Compared with prior art, the present invention has many advantages, such as to realize that complete detection, online damage diagnosis position error are small.
Description
Technical field
The present invention relates to pressure vessel damage check field, on-line monitoring more particularly, to a kind of damage of pressure vessel and
Real time health diagnostic method and equipment.
Background technology
Pressure vessel is that the widely used larger special type of danger that may cause to fire or be poisoned etc. is set in production, life
It is standby.It is in-service with pressure vessel due to leading to extraordinary failure there are various problems in design, manufacture, installation and operation, to
Cause sudden malicious event.Guidance can be provided further to shut down detection to the positioning of pressure vessel damage, effectively avoided
Catastrophic failure occurs.It is reliable that traditional pressure vessel damage positioning method is based primarily upon Principle of Statistics and method of safety coefficients etc.
Property theory ensures the structural intergrity of pressure vessel.However during true military service, pressure vessel is by various natures, load
Environmental interaction acts on, this safety of being on active service to it proposes new challenge.On the one hand, material inherent shortcoming, manufacturing defect, dielectric corrosion
Etc. factors can all cause material product excessive deformation and fracture failure.On the other hand, the heat that is subject to during one's term of military service, light, electricity, high energy
Radiation, oxidation are all the inducements of pressure vessel failure, also bring potential threat to its structural intergrity.For in-service
Pressure vessel, environment, load effect during manufacture, storage, transport and use will generate visually not in inside configuration
Damage can be surveyed, this makes the significantly decline of structural-load-carrying capacity, easily cause stress container burst destroy and without giving warning in advance.
It can be that further shutdown inspection, repair etc. provide guidance to inservice pressure vessel on-line monitoring, reduce the warp that product rejection is brought
Ji loss.Existing patent application CN106710648A discloses a kind of nuclear power plant reactor pressure vessel irradiation damage monitoring method,
This method measure first random time press force container it is same monitoring position irradiation damage after nano-indentation hardness, then into
Row off-line analysis calculates, to realize security evaluation.Although this method need not shut down detection, the nano impress after damage is hard
The acquisition of degree and subsequent analysis calculation process are all sufficiently complex, cannot be satisfied requirement of real time, and cannot achieve damage reason location.Mesh
Before, the health monitoring of pressure vessel one kind labyrinth is concentrated mainly in conventional detection means, is more a lack of effective
On-line monitoring method and equipment cannot achieve on-line monitoring and damage reason location.Study new pressure vessel damage tuning on-line skill
Art and equipment will be expected to ensure great product military service safety, avoids major accident.
Invention content
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of pressure vessels to damage
On-line monitoring and real time health diagnostic method and equipment.
The purpose of the present invention can be achieved through the following technical solutions：
Pressure vessel is decomposed into sky by the on-line monitoring and real time health diagnostic method, this method of a kind of pressure vessel damage
Heart cylindrical section cylinder and hollow ball shape end socket, based on coordinate transform respectively to the open circles shell of column cylinder and hollow ball shape end socket
Carry out damage diagnosis positioning and damage display.
Further, using oval location algorithm or Surface SP Tomography algorithm to the open circles shell of column cylinder and hollow ball shape
End socket carries out damage diagnosis positioning respectively.
Further, it is fixed to the open circles shell of column cylinder damage using the oval location algorithm under cylindrical coordinate
Position carries out damage diagnosis positioning using the oval location algorithm under spherical coordinate system to hollow ball shape end socket.
The present invention also provides a kind of on-line monitorings and real time health diagnostic method for realizing pressure vessel damage as mentioned
Equipment, including the first signal transducer being arranged on open circles shell of column cylinder, be arranged on hollow ball shape end socket second
Signal transducer, matrix switch, oscillograph, amplifier, function generator and computer, the computer are separately connected oscillograph
And function generator, the amplifier and function generator connection, described matrix switch one end is separately connected the first sensing
Device and second signal sensor, the other end are separately connected amplifier and oscillograph, real by the automatic switchover of the matrix switch
Existing different excitation-RX paths；
Signal routing program, data-signal save routine and damage diagnosis finder are stored in the computer.
Further, first signal transducer and second signal sensor use piezoelectric ceramics unit or supersonic guide-wave
Sensor.
Further, first signal transducer is the Rectangular piezoelectric chip arrays formed by multiple piezoelectric patches, described
Binary signal sensor is the circular piezoelectric chip arrays formed by multiple piezoelectric patches.
Compared with prior art, the invention has the advantages that：
(1) pressure vessel is divided into two parts of cylindrical tube section and dome head section and carries out damage diagnosis respectively by the present invention
Positioning, covers entire pressure vessel, under the premise of guided wave conduction feature in simplifying pressure vessel, can conveniently realize entire
The online damage diagnosis positioning of pressure vessel, detection are comprehensive.
(2) present invention is coordinately transformed for different pressures container area (cylinder and end socket), is sat using cylindrical coordinates, ball
The transformational relation of mark and cartesian coordinate carries out coordinate conversion so that damage by conventional based on elliptical damage diagnosis localization method
Hinder health monitoring and damage reason location that location algorithm is more suitable for pressure vessel one kind labyrinth, improves positioning accuracy.
(3) different signal excitation-RX paths is respectively turned on by the present invention using Multi-channel matrix switch, is realized complete
Automatic signal excitation is received, preserves and is handled, and realizes the tuning on-line damaged to pressure vessel, online damage reason location error
Less than 10%.
(4) present invention can be used the supersonic guide-wave that piezoelectric ceramics piece can also be non-contacting empty coupling probe excitation and be used as letter
Number sensor has using improving damage diagnosis positioning accuracy.
Description of the drawings
Fig. 1 is the coordinate system and piezoelectric ceramics chip arrays that the present invention uses, wherein (1a) positions for pressure vessel cylindrical section
Coordinate system, (1b) are dome head section coordinate system, and (1c) is monitoring cylindrical section piezoelectric ceramics chip arrays, and (1d) is the spherical envelope of monitoring
Head section piezoelectric ceramics chip arrays；
Fig. 2 is oval location algorithm schematic diagram of the present invention, wherein (2a) is that excitation-defect-receiving sensor is closed
System, (2b) are oval criterion, and (2c) is oval localization method；
Fig. 3 is the cartesian coordinate system schematic diagram of oval location algorithm；
Fig. 4 is the cylindrical coordinates and spherical coordinates schematic diagram that the present invention uses, wherein (4a) is cylindrical coordinates, (4b) is spherical coordinates；
Fig. 5 is that the pressure vessel of the present invention damages tuning on-line device structure schematic diagram；
Fig. 6 is that pressure vessel damages tuning on-line result, wherein (6a) is cylindrical section positioning result, and (6b) is spherical seal
Head section positioning result.
Specific implementation mode
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to
Following embodiments.
The present invention realizes that a kind of on-line monitoring of pressure vessel damage and real time health diagnostic method, this method hold pressure
Device is decomposed into open circles shell of column cylinder and hollow ball shape end socket, is damaged respectively to open circles shell of column cylinder and hollow ball shape end socket
Wound diagnosis positioning and damage display.When carrying out damage diagnosis positioning, oval location algorithm can be utilized or pass through coordinate transform
Surface SP Tomography algorithm open circles shell of column cylinder and hollow ball shape end socket are executed respectively.
Damage diagnosis positioning is carried out using oval location algorithm in certain embodiments, and in order to further increase positioning accurate
Degree, is improved oval location algorithm, is damaged to open circles shell of column cylinder using the oval location algorithm under cylindrical coordinate
Wound diagnosis positioning carries out damage diagnosis positioning, the segmentation using the oval location algorithm under spherical coordinate system to hollow ball shape end socket
Formula damage diagnosis localization method positioning accuracy is high, solves Geometrical discontinuity construction damage positioning problem, process such as Fig. 1 institutes
Show.
As shown in Fig. 2, elliptic imaging method is one of most common damage imaging algorithm, in many previous studies
Application is arrived, this method is to determine defective locations based on scattering of wave phenomenon.The process employs transmitter-damage-sensors
Distance geometrical relationship and scattering wave propagation time (ToF).Relationship between time (ToF), wave velocity and distance can be
An ellipse is generated in plane.In figure, T, R respectively refer to excitation receiving sensor, and D represents defect.
As Figure 3-Figure 4, the elliptic equation under cartesian coordinate system is：
A (x in formula1,y1) and b (x2,y2) it is oval bifocal.
Consider an ellipse in periphery, cylindrical radius is constant R, under cylindrical coordinate, such as schemes (4a), two focuses
c(θ1,y1, R) and d (θ2,y2, R) the distance between be：
Transverse distance is：
In formula, cgIt is velocity of wave.
In this way, can determine that elliptical equation expression formula is under cylindrical coordinate：
Similarly, under the spherical coordinate system shown in figure (4b), the elliptic equation positioned at ball surface is：
In formula, DefFor focus e (θ1,r1) and f (θ2,r2The distance between)：
The equipment for being illustrated in figure 5 the on-line monitoring and real time health diagnostic method of realizing above-mentioned pressure vessel damage, packet
Include the first signal transducer 7 being arranged on open circles shell of column cylinder, the second signal being arranged on hollow ball shape end socket sensing
Device 8, matrix switch 5, oscillograph 2, amplifier 4, function generator 3 and computer 1, computer 1 are separately connected oscillograph 2 and letter
Number generator 3, the connection of 4 and function generator 3 of amplifier, 5 one end of matrix switch is separately connected the first signal transducer 7 and second
Signal transducer 8, the other end include resultant signal input terminal and resultant signal output end, and resultant signal input terminal connects amplifier 4, total to believe
Number output end connects oscillograph 2, and different excitation-RX paths are realized in the automatic switchover for passing through matrix switch 5.It is deposited in computer 1
Signal routing program, data-signal save routine and damage diagnosis finder are contained, full-automatic signal excitation is realized, connects
It receives, preserve and handles.
When matrix switch 5 damages diagnosis positioning online, the arbitrary connection between different sensors can be controlled, is controlled
Signal excitation-reception pattern between different sensors passes through Automatic Control difference excitation-receiving sensor of matrix switch
Path generates multiple signals, is preserved by computer, is then distinguished again by the algorithm of the segmentation damage diagnosis positioning in computer
Realize the damage imaging in cylinder and end socket.In the present embodiment, the channel number and data transmission rate of matrix switch 5 can be according to realities
Border needs to set, and is 2 × 64 channels in the present embodiment.
In certain embodiments, the first signal transducer 7 and second signal sensor 8 using piezoelectric ceramics unit or non-connect
The supersonic guide-wave sensor of tactile empty coupling probe excitation, the parameters such as frequency, assignment of institute's excitation signal can be according to specific monitorings pair
As adjustment.
In certain embodiments, the first signal transducer 7 is the Rectangular piezoelectric chip arrays formed by multiple embedment piezoelectric patches,
Second signal sensor 8 is the circular piezoelectric chip arrays formed by multiple embedment piezoelectric patches.In the present embodiment, outside pressure vessel
The a diameter of 300mm in portion, thickness 5mm, end socket are 1 with barrel lenght ratio:1 30CrMo, piezoelectric patches number used in cylindrical section are
18, single seal head section piezoelectric patches number is 9.
In the present embodiment, the damage inline diagnosis positioning step based on above equipment can be described as：
Step 1 is pasted onto pressure vessel cylindrical section and seal head section according to given piezoelectric ceramics piece sensor, and sensor exists
Cylindrical section is 18 chip arrays, and number is PZT-0 to PZT-17, forms rectangular array, is 9 chip arrays, number PZT-0 in end socket
To PZT-8, circular array is formed；
Step 2, start computer in signal routing program and data-signal save routine carry out it is full automatic excitation,
It receives, preserve guided wave signals；
Step 3, the damage started in computer diagnoses finder, judges whether to damage, and calls be applicable in respectively
It is sharp respectively according to ellipse positioning basic principle (as shown in Figure 2) in pressure vessel cylindrical section and the damage reason location algorithm of seal head section
With the transformational relation between cylindrical coordinates, spherical coordinates and cartesian coordinate system, oval positioning is realized, and show.
The damage diagnosis positioning of the pressure vessel cylindrical section and dome head section that are obtained in conjunction with the elliptic imaging algorithm in Fig. 2
As a result such as Fig. 6.As it can be seen that the on-line monitoring and real time health diagnostic method and equipment using the pressure vessel damage of the present invention can be with
Realize that the tuning on-line damaged to pressure vessel cylindrical section and soccer star's seal head section, positioning accuracy are good, it was confirmed that of the invention is effective
Property.And the pressure window that the method for the present invention and equipment are applicable in can be simple metal pressure vessel, can also be composite pressure
Container.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without
It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be in the protection domain being defined in the patent claims.
Claims (6)
1. a kind of on-line monitoring and real time health diagnostic method of pressure vessel damage, which is characterized in that this method holds pressure
Device is decomposed into open circles shell of column cylinder and hollow ball shape end socket, based on coordinate transform respectively to the open circles shell of column cylinder and sky
Heart dome head carries out damage diagnosis positioning and damage display.
2. the on-line monitoring and real time health diagnostic method of pressure vessel damage according to claim 1, which is characterized in that
The open circles shell of column cylinder and hollow ball shape end socket are damaged respectively using oval location algorithm or Surface SP Tomography algorithm
Diagnosis positioning.
3. the on-line monitoring and real time health diagnostic method of pressure vessel damage according to claim 1, which is characterized in that
Damage reason location is carried out to the open circles shell of column cylinder using the oval location algorithm under cylindrical coordinate, using under spherical coordinate system
Oval location algorithm carries out damage diagnosis positioning to hollow ball shape end socket.
4. a kind of on-line monitoring for realizing pressure vessel as described in claim 1 damage and real time health diagnostic method are set
It is standby, which is characterized in that including be arranged on open circles shell of column cylinder the first signal transducer, be arranged on hollow ball shape end socket
Second signal sensor, matrix switch, oscillograph, amplifier, function generator and computer, the computer is separately connected
Oscillograph and function generator, the amplifier and function generator connection, described matrix switch one end is separately connected the first letter
Number sensor and second signal sensor, the other end are separately connected amplifier and oscillograph, pass through the automatic of the matrix switch
Different excitation-RX paths are realized in switching；
Signal routing program, data-signal save routine and damage diagnosis finder are stored in the computer.
5. equipment according to claim 4, which is characterized in that first signal transducer and second signal sensor are adopted
With piezoelectric ceramics unit or supersonic guide-wave sensor.
6. equipment according to claim 4, which is characterized in that first signal transducer is to be formed by multiple piezoelectric patches
Rectangular piezoelectric chip arrays, the second signal sensor is the circular piezoelectric chip arrays formed by multiple piezoelectric patches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810219448.0A CN108490071B (en) | 2018-03-16 | 2018-03-16 | Method and equipment for online monitoring and real-time health diagnosis of damage of pressure vessel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810219448.0A CN108490071B (en) | 2018-03-16 | 2018-03-16 | Method and equipment for online monitoring and real-time health diagnosis of damage of pressure vessel |
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| Publication Number | Publication Date |
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| CN108490071A true CN108490071A (en) | 2018-09-04 |
| CN108490071B CN108490071B (en) | 2020-12-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113504299A (en) * | 2021-05-28 | 2021-10-15 | 哈尔滨工业大学（威海） | Time difference positioning-based damage identification method for underwater pressure-resistant spherical shell structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203037624U (en) * | 2012-12-25 | 2013-07-03 | 深圳市发利构件机械技术服务有限公司 | Pressure container detection system |
| CN107490602A (en) * | 2017-07-27 | 2017-12-19 | 华东理工大学 | A kind of damage real-time perception and early warning system for pressure vessel |
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2018
- 2018-03-16 CN CN201810219448.0A patent/CN108490071B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203037624U (en) * | 2012-12-25 | 2013-07-03 | 深圳市发利构件机械技术服务有限公司 | Pressure container detection system |
| CN107490602A (en) * | 2017-07-27 | 2017-12-19 | 华东理工大学 | A kind of damage real-time perception and early warning system for pressure vessel |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113504299A (en) * | 2021-05-28 | 2021-10-15 | 哈尔滨工业大学（威海） | Time difference positioning-based damage identification method for underwater pressure-resistant spherical shell structure |
| CN113504299B (en) * | 2021-05-28 | 2023-09-15 | 哈尔滨工业大学（威海） | Underwater pressure-resistant spherical shell structure damage identification method based on time difference positioning |
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