CN107490602A - A kind of damage real-time perception and early warning system for pressure vessel - Google Patents
A kind of damage real-time perception and early warning system for pressure vessel Download PDFInfo
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- CN107490602A CN107490602A CN201710625023.5A CN201710625023A CN107490602A CN 107490602 A CN107490602 A CN 107490602A CN 201710625023 A CN201710625023 A CN 201710625023A CN 107490602 A CN107490602 A CN 107490602A
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- signal
- pressure vessel
- early warning
- warning system
- time perception
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
Abstract
The present invention relates to a kind of damage real-time perception and early warning system for pressure vessel, including signal generating unit, signal excitation end, signal receiving end, matrix switch, signal display unit and computer, signal excitation end and signal receiving end include piezoelectric ceramics chip arrays；Signal generating unit produces the first electric signal, first electric signal is converted to pressure signal after matrix switch by signal excitation end, the pressure signal is received after pressure vessel by corresponding signal receiving end and the second electric signal after changing, signal display unit receives second electric signal by matrix switch, show and be sent to computer, computer realizes the status monitoring of pressure vessel according to second electric signal.Compared with prior art, the present invention solves the problems, such as pressure vessel damage real-time perception and early warning difficulty based on guided wave, can timely and effectively avoid pressure vessel that catastrophic failure occurs.
Description
Technical field
The present invention relates to one kind, more particularly, to a kind of damage real-time perception and early warning system for pressure vessel.
Background technology
Pressure vessel is widely used in production, life the larger special type of danger such as fire or be poisoned may to be caused to set
It is standby.It is in-service to cause extraordinary failure due to various problems be present in design, manufacture, installation and operation with pressure vessel, so as to
Cause sudden malicious event.Real-time perception and early warning to pressure vessel damage are capable of the healthy shape of monitoring pressure in real time container
State, for further shut down detection guidance is provided, the sexual behavior that effectively averts a calamity thus generation.However, to pressure vessel damage and defect
Conventional lossless detection technique (such as：Ray technology, magnetic detecting technique, EDDY CURRENT, ultrasonic technique, surface compound film technology etc.)
The real time on-line monitoring of pressure vessel can not be realized, and equipment needs to shut down detection, cost is high.Existing patent application
CN106710648A discloses a kind of nuclear power plant reactor pressure vessel irradiation damage monitoring method, when this method measures any first
Between point pressure container steel it is same monitoring position irradiation damage after nano-indentation hardness, then carry out off-line analysis calculating, from
And realize security evaluation.Although this method need not shut down detection, the collection of the nano-indentation hardness after damage divides with follow-up
It is all sufficiently complex to analyse calculation process, requirement of real time can not be met.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of real-time, full automatic
Damage real-time perception and early warning system for pressure vessel.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of damage real-time perception and early warning system for pressure vessel, including signal generating unit, signal excitation end,
Signal receiving end, matrix switch, signal display unit and computer, the signal excitation end and signal receiving end are symmetrically arranged in
The both ends of the pressure vessel, the signal generating unit are connected by matrix switch with signal excitation end, and the signal shows
Show that unit is connected by matrix switch with signal receiving end, the computer is connected with signal display unit, the signal excitation
End and signal receiving end include piezoelectric ceramics chip arrays；
Signal generating unit produces the first electric signal, and first electric signal is converted to after matrix switch by signal excitation end
Pressure signal, the pressure signal is received after pressure vessel by corresponding signal receiving end and the second electric signal after changing, signal
Display unit receives second electric signal by matrix switch, shows and is sent to computer, computer is according to described second
Electric signal realizes the status monitoring of pressure vessel.
The signal generating unit includes the arbitrary-function generator and power amplifier being connected, the power amplifier
It is connected with matrix switch.
The piezoelectric ceramics chip arrays include multiple piezoelectric ceramics pieces being placed equidistant in Surface Pressure Vessel.
The piezoelectric ceramics chip arrays along pressure vessel circumferentially.
The piezoelectric ceramics chip arrays cover the whole circular arc length of the pressure vessel or semicircle arc length.
The piezoelectric ceramics piece is pasted on Surface Pressure Vessel.
The piezoelectric ceramics chip arrays are connected by positive and negative lead wires with matrix switch, the positive and negative lead wires a diameter of 0.2
~1mm.
The a diameter of 0.5mm of positive and negative lead wires.
The signal display unit includes oscillograph.
The computer receive the second electric signal pass through Surface SP Tomography algorithm, elliptic imaging algorithm or time reversal calculate
Method is handled second electric signal, monitors whether damage be present, if so, then producing alarm, and damage is positioned
And imaging, if it is not, then continuing to the signal of next detection cycle.
Compared with prior art, the present invention has advantages below：
1) present invention realizes signal acquisition using piezoelectric ceramics chip arrays, because guided wave has long transmission distance, sensitivity
High series of advantages, damage real-time perception and early warning technology of the present invention based on guided wave can be found in pressure vessel in time
Damage, avoid pressure vessel that catastrophic failure occurs.
2) compared with conventional detection means, present system real-time, full automatic can gather leading in pressure vessel
Ripple signal, with reference to corresponding control software, algorithm and big data treatment technology, the on-line monitoring to pressure vessel damage is realized,
Cost is low, distance is remote, high sensitivity, has real-time perception and warning function.
3) present invention solves pressure vessel military service safety, can timely and effectively avoid pressure vessel from occurring calamitous broken
It is bad.
4) the positive and negative lead wires diameter of piezoelectric ceramics piece of the present invention is arranged to 0.5mm so that piezoelectric patches and lead junction
Solder joint it is as small as possible, improve reliability.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the damage monitoring design sketch of the present invention.
Embodiment
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.
As shown in figure 1, the present embodiment provides a kind of damage real-time perception and early warning system for pressure vessel, including letter
Number generating unit, signal excitation end, signal receiving end, matrix switch 3, signal display unit and computer 7, signal excitation end and
Signal receiving end is symmetrically arranged in the both ends of pressure vessel 2, and signal generating unit is connected by matrix switch 3 and signal excitation end
Connect, signal display unit is connected by matrix switch 3 with signal receiving end, and computer 7 is connected with signal display unit, and signal swashs
Originator and signal receiving end include piezoelectric ceramics chip arrays.
Signal generating unit includes the arbitrary-function generator 5 and power amplifier 6 being connected, power amplifier 6 and square
The connection of battle array switch 3.Signal caused by arbitrary-function generator 5 is 3.5 cycle sinusoidal signals or 5 cycle sinusoidals of Hanning window modulation
Signal.
Signal display unit includes oscillograph 4.
Power amplifier 6 and oscillograph 4 or the integrated module with identical function.
Piezoelectric ceramics chip arrays include multiple be placed equidistant in the piezoelectric ceramics piece 1 on the surface of pressure vessel 2.The present embodiment
In, piezoelectric ceramics chip arrays along pressure vessel circumferentially.Piezoelectric ceramics piece is in a unlimited number, arrangement spacing, size and center
Frequency-adjustable, piezoelectric ceramics piece can the whole circular arc of covering pressure container be long or semicircle arc length, and signal excitation-RX path is with regard to energy
Whole pressure vessel is enough covered, realizes that the damage of total head force container perceives.In the present embodiment, each piezoelectric ceramics chip arrays include
8 piezoelectric ceramics pieces.
The combination of piezoelectric ceramics piece 1 and pressure vessel 2 can be adhesive type, can also be non-adhesive type.Piezoelectric ceramics piece
Array is connected in the switch board of matrix switch by positive and negative lead wires, a diameter of 0.2~1mm of the positive and negative lead wires, this reality
It is preferably that 0.5mm piezoelectric ceramics piece and the solder joint of lead junction are as small as possible to apply example.The piezoelectric ceramics piece that the present embodiment uses
Thickness is 1mm, a diameter of 10mm, centre frequency 210KHz.
Matrix switch 3 can be arranged as required to port number, and in the present embodiment, matrix switch 3 is the switch of 2 × 64 passages,
Controlled by software, be automatically performed different groups pairs of signal acquisition, by two signals inputs, output bus switching channels and 64 letters
Number switching channels composition, the signal that 2 × 64 passages can be achieved mutually are swept.
It is above-mentioned to be for the damage real-time perception of pressure vessel and the operation principle of early warning system：Arbitrary-function generator 5
Electric signal is produced, is amplified through power amplifier 6, in the present embodiment, multiplication factor is 20 times, forms the first electric signal；This first
Electric signal is converted to pressure signal after matrix switch by signal excitation end；The pressure signal is after pressure vessel by corresponding letter
Second electric signal after number receiving terminal is received and changed, oscillograph 4 receive the second electric signal by matrix switch 3, show and transmit
To computer 7, computer 7 realizes the status monitoring of pressure vessel according to the second electric signal.Computer 7 is receiving the second telecommunications
Number the second electric signal is handled by Surface SP Tomography algorithm, elliptic imaging algorithm or time reversal algorithm, monitor whether to deposit
Damaging, if so, then producing alarm, and damage is being positioned and is imaged, as shown in Fig. 2 if it is not, then continuing to next inspection
Survey the signal in cycle.
The system is based on guided wave transmission principle, and the automatic of real-time online excites and received different piezoelectric ceramics piece groups pair,
And data are preserved, handled and are imaged.System is switched using Multi-channel matrix, it is possible to achieve multiple piezoelectric patches groups are to signal
Full-automatic collection, with reference to control software, realize real-time perception and the early warning of pressure vessel health status.
Preferred embodiment of the invention described in detail above.It should be appreciated that one of ordinary skill in the art without
Creative work can is needed to make many modifications and variations according to the design of the present invention.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 scheme, all should be in the protection domain being defined in the patent claims.
Claims (10)
1. a kind of damage real-time perception and early warning system for pressure vessel, it is characterised in that including signal generating unit, letter
Number excite end, signal receiving end, matrix switch, signal display unit and computer, the signal excitation end and signal receiving end
The both ends of the pressure vessel are symmetrically arranged in, the signal generating unit is connected by matrix switch with signal excitation end,
The signal display unit is connected by matrix switch with signal receiving end, and the computer is connected with signal display unit, institute
Stating signal excitation end and signal receiving end includes piezoelectric ceramics chip arrays；
Signal generating unit produces the first electric signal, and first electric signal is converted to pressure after matrix switch by signal excitation end
Signal, the pressure signal is received after pressure vessel by corresponding signal receiving end and the second electric signal after changing, signal are shown
Unit receives second electric signal by matrix switch, shows and is sent to computer, and computer is according to second telecommunications
Number realize the status monitoring of pressure vessel.
2. the damage real-time perception and early warning system according to claim 1 for pressure vessel, it is characterised in that described
Signal generating unit includes the arbitrary-function generator and power amplifier being connected, and the power amplifier connects with matrix switch
Connect.
3. the damage real-time perception and early warning system according to claim 1 for pressure vessel, it is characterised in that described
Piezoelectric ceramics chip arrays include multiple piezoelectric ceramics pieces being placed equidistant in Surface Pressure Vessel.
4. the damage real-time perception and early warning system according to claim 1 for pressure vessel, it is characterised in that described
Piezoelectric ceramics chip arrays along pressure vessel circumferentially.
5. the damage real-time perception and early warning system according to claim 4 for pressure vessel, it is characterised in that described
Piezoelectric ceramics chip arrays cover the whole circular arc length of the pressure vessel or semicircle arc length.
6. the damage real-time perception and early warning system according to claim 4 for pressure vessel, it is characterised in that described
Piezoelectric ceramics piece is pasted on Surface Pressure Vessel.
7. the damage real-time perception and early warning system according to claim 1 for pressure vessel, it is characterised in that described
Piezoelectric ceramics chip arrays are connected by positive and negative lead wires with matrix switch, a diameter of 0.2~1mm of the positive and negative lead wires.
8. the damage real-time perception and early warning system according to claim 7 for pressure vessel, it is characterised in that described
The a diameter of 0.5mm of positive and negative lead wires.
9. the damage real-time perception and early warning system according to claim 1 for pressure vessel, it is characterised in that described
Signal display unit includes oscillograph.
10. the damage real-time perception and early warning system according to claim 1 for pressure vessel, it is characterised in that institute
State computer and receive the second electric signal by Surface SP Tomography algorithm, elliptic imaging algorithm or time reversal algorithm to described
Two electric signals are handled, and monitor whether damage be present, if so, then producing alarm, and damage are positioned and are imaged, if
It is no, then continue to the signal of next detection cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710625023.5A CN107490602A (en) | 2017-07-27 | 2017-07-27 | A kind of damage real-time perception and early warning system for pressure vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710625023.5A CN107490602A (en) | 2017-07-27 | 2017-07-27 | A kind of damage real-time perception and early warning system for pressure vessel |
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| CN107490602A true CN107490602A (en) | 2017-12-19 |
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| CN201710625023.5A Pending CN107490602A (en) | 2017-07-27 | 2017-07-27 | A kind of damage real-time perception and early warning system for pressure vessel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490071A (en) * | 2018-03-16 | 2018-09-04 | 华东理工大学 | The on-line monitoring and real time health diagnostic method and equipment of a kind of pressure vessel damage |
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| CN106950282A (en) * | 2017-04-21 | 2017-07-14 | 华南理工大学 | A kind of fiber reinforced plastics rod defect inspection method and system based on longitudinal ultrasonic guided wave |
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2017
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| CN101839893A (en) * | 2010-05-10 | 2010-09-22 | 中国人民解放军理工大学 | Lamb wave virtual time reversal method with high spatial resolution |
| CN102393445A (en) * | 2011-10-24 | 2012-03-28 | 沈阳建筑大学 | Pipeline structure damage monitoring method based on piezoelectric ceramic sensor and guide wave analysis |
| CN104076095A (en) * | 2014-07-24 | 2014-10-01 | 大连理工大学 | Insulation layer debonding damage monitoring method based on ultrasonic guided waves |
| CN105651862A (en) * | 2016-01-26 | 2016-06-08 | 郑州大学 | Device and method for detecting damage to composite by aid of Lamb guide waves |
| CN106950282A (en) * | 2017-04-21 | 2017-07-14 | 华南理工大学 | A kind of fiber reinforced plastics rod defect inspection method and system based on longitudinal ultrasonic guided wave |
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| CN108490071A (en) * | 2018-03-16 | 2018-09-04 | 华东理工大学 | The on-line monitoring and real time health diagnostic method and equipment of a kind of pressure vessel damage |
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Application publication date: 20171219 |
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