CN110411677A - A kind of valve leaks and cavitation monitoring device and monitoring method based on underwater sound signal - Google Patents
A kind of valve leaks and cavitation monitoring device and monitoring method based on underwater sound signal Download PDFInfo
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- CN110411677A CN110411677A CN201910701122.6A CN201910701122A CN110411677A CN 110411677 A CN110411677 A CN 110411677A CN 201910701122 A CN201910701122 A CN 201910701122A CN 110411677 A CN110411677 A CN 110411677A
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- 230000005236 sound signal Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000012806 monitoring device Methods 0.000 title claims abstract description 16
- 238000012544 monitoring process Methods 0.000 title abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000004458 analytical method Methods 0.000 claims abstract description 27
- 238000013500 data storage Methods 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 12
- 238000007726 management method Methods 0.000 claims abstract description 5
- 230000009191 jumping Effects 0.000 claims description 10
- 238000013461 design Methods 0.000 claims description 3
- 230000006870 function Effects 0.000 abstract description 12
- 230000002452 interceptive effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 210000003934 vacuole Anatomy 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 206010020843 Hyperthermia Diseases 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000003483 aging Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
- G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The present invention relates to a kind of valve leaks based on underwater sound signal and cavitation monitoring device and monitoring methods, hardware system in monitoring device includes several distributed parallel computing environments, each distributed parallel computing environment include before several valves for being connect with terminal water listen sensor, water listens sensor after valve opening sensor and valve, distributed parallel computing environment stores analysis platform with data respectively by interchanger and terminal is connect, software systems include the data storage analysis system being set in data storage analysis platform, it includes user management module that data, which store analysis system, WEB functional module, database module and background function module, WEB functional module is also provided in terminal.Pass through the functions such as system arrangement, parameter setting, collecting sensor signal, signal processing, comparing and upload, data storage, it realizes and the real-time, interactive of monitoring object and control, valves leakage can effectively be monitored and tiny signal that cavitation is issued, it is safe to ensure that valve uses.
Description
Technical field
The present invention relates to valve or pipe-line system equipment monitoring field, especially a kind of valve leaks based on underwater sound signal
With cavitation monitoring device and monitoring method.
Background technique
Valve is a kind of control list most commonly seen in Naval Architecture and Ocean Engineering and the various device of petrochemical field and pipeline
Member is able to achieve being connected to of fluid mechanism in pipeline, cutting by the opening and closing of valve and adjusting and changes the functions such as flow direction.But simultaneously
There is also the valves leakage occurred by reasons such as abrasion, corrosion and sealing element agings or leakages during the use of the valve
The phenomenon that, the leakage of general valve can intuitively be found out by valve exterior surface, but the interior leakage of valve is difficult effectively to monitor, and valve
If the interior leakage of door is found not in time and processing may result in serious accident (trandfer fluid is lost, cabin intakes etc.).
Furthermore valve in use, with the flowing of fluid and the variation of pressure, the somewhere inside fluid media (medium)
Pressure be less than saturated vapor pressure when, vacuole will be generated here；After fluid passes through valve, high compression ring is restored at vacuole
Border, vacuole will crumble and fall, and to rupture in generation, this phenomenon is referred to as cavitation.Cavitation will lead to the vibration of valve components with
And specific hydrodynamic noise is generated in fluid media (medium), localized hyperthermia's impacting with high pressure that furthermore cavitation is formed can be to valve interior surface
It causes cavitation corrosion to injure, influences the service life of valve.
The monitoring mode of traditional valves leakage and cavitation phenomenon is mainly artificial judgment, or using with infrared, super
The equipment of audio technology is checked.Currently, application of the acoustic emission in valve monitoring field is also gradually taken seriously, but existing
Technology be based primarily upon valves leakage it is larger when cause fluid jet excitation structure to vibrate this principle, by microphone monitoring because vibration
The variation of the raw airborne noise of movable property, and monitoring data will be further analyzed to judge the whether interior leakage of valve, this method
In the presence of being difficult to monitor minor leakage, the problems such as accidentally monitoring and defect are easy when valve generates cavitation phenomenon.
Summary of the invention
The applicant for the disadvantage in above-mentioned existing production technology, provide a kind of valve leaks based on underwater sound signal and
Cavitation monitoring device and monitoring method, the abnormal signal that the monitoring device generates minor leakage is highly sensitive, can apply
In the monitoring of valve minor leakage and cavitation condition, produced by matched monitoring method, when can be according to valves leakage and cavitation
Raw extraordinary noise judges the working condition of valve, liquid flowing state in adjustment system, avoid valve for a long time inside leakage or
It is run under cavitation condition, and the big system based on application scenarios carries out valve large number of in system while monitoring and dividing
Analysis, so that the long-time service for valve provides safeguard.
Technical solution used by monitoring device of the invention is as follows:
A kind of valve leaks and cavitation monitoring device based on underwater sound signal, including hardware system and software systems, it is described
Hardware system includes several distributed parallel computing environments, and each distributed parallel computing environment includes the valve that several connect with terminal
Preceding water listens water after sensor, valve opening sensor and valve to listen sensor, and each distributed parallel computing environment is commonly through interchanger point
Analysis platform is not stored with data and several terminals are connect；The software systems include being set to data storage analysis to put down
Data in platform store analysis system, and the data storage analysis system includes user management module, WEB functional module, data
Library module and background function module, the WEB functional module are also provided in terminal.
Its further technical solution is:
It is that piezoelectric type water listens sensor that water, which listens after sensor and valve that water listens sensor, before valve；
Database module includes database manipulation function, Data Sheet Design function and the data controlled by WEB functional module
Library backup and restoring function.
Technical solution used by monitoring method of the invention is as follows:
A kind of valve leaks and cavitation monitoring method based on underwater sound signal, the monitoring method the following steps are included:
Step 1: system configuration；
Step 2: parameter setting；
Step 3: collecting sensor signal；
Step 4: data processing；
Step 5: frequency domain data is uploaded and stores frequency domain data into database；
Step 6: judging whether frequency domain data transfinites value by data storage analysis system, if so, jumping to the 7th He simultaneously
Tenth step, if it is not, jumping to the 8th step；
Step 7: time domain data is uploaded and stores time domain data into database；
Whether step 8: by data storage analysis system, to judge frequency domain data variation tendency normal, if so, jumping to the
Nine steps, if it is not, then jumping to the 7th and the tenth step simultaneously；
Step 9: terminating this time to monitor；
Step 10: software systems give a warning prompt.
Its further technical solution is:
First step system configuration includes hardware system configuration and software systems configuration；
The content of third step collecting sensor signal is that water listens water after sensor, valve opening sensor and valve before valve
Listen the underwater sound signal of sensor；
The object of 4th step data processing is the underwater sound signal collected in third step by sensor.
Beneficial effects of the present invention are as follows:
The present invention monitors valve leakage and cavitation phenomenon by hydrophone sensing technology, has height quick minor anomaly
Perception；Apparatus of the present invention can be according to the type of required monitoring valve and the different setting monitoring policies and data of fluid media (medium)
Processing method pre-processes test data in test terminal, to remote terminal transmission frequency spectrum point within the appointed interval time
Data are analysed, and only record and hop time domain data when underwater sound signal occurs abnormal, there is wide applicability, and effectively
Reduce volume of transmitted data and amount of storage；The present invention carries out spectrum analysis, filtering, product to collection in worksite signal using test terminal
Equal correlation analyses are divided to calculate, it is micro- to valve internal according to the total grade of signal of the signal spectrum feature and frequency-division section after acquisition process
The abnormalities such as small leakage and cavitation carry out timely reliable monitoring and assessment, and upload remote terminal and carry out alarm and exception
Processing, while position and corresponding marine acoustics letter in grid figure where valve can be directly viewable in terminal
Number quickly positions and makes security response as a result, can precisely judge risk class, and package unit runs efficient stable, is
Maintenance valve safe working environment provides powerful guarantee.
Detailed description of the invention
Fig. 1 is hardware system schematic diagram of the invention；
Fig. 2 is software systems schematic diagram of the invention；
Fig. 3 is sensor of the invention schematic view of the mounting position；
Fig. 4 is systematic schematic diagram of the invention.
Wherein: 1, data store analysis platform；2, interchanger；3, distributed parallel computing environment；301, water listens sensor before valve；
302, valve opening sensor；303, water listens sensor after valve；4, terminal；5, data store analysis system；501, it uses
Family management module；502, WEB functional module；503, database module；504, background function module.
Specific embodiment
Specific embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in figures 1-4, the present invention includes hardware system and software systems, and hardware system includes that several distributions are adopted
Collecting system 3, water listens sensor 301, valve opening before the valve that each distributed parallel computing environment 3 is connect with terminal comprising several
Water listens sensor 303 after sensor 302 and valve, and each distributed parallel computing environment 3 divides with data storage respectively commonly through interchanger 2
It analyses platform 1 and several terminals 4 connects；Software systems include the data storage being set in data storage analysis platform 1
Analysis system 5, it includes user management module 501, WEB functional module 502,503 and of database module that data, which store analysis system 5,
Background function module 504, WEB functional module 502 are also provided in terminal 4.
It is that piezoelectric type water listens sensor, database module that water, which listens after sensor 301 and valve that water listens sensor 303, before each valve
503 include database manipulation function, Data Sheet Design function and the database backuping and restoring controlled by WEB functional module 502
Function.
Monitoring method of the invention the following steps are included:
Step 1: system configuration, including hardware system configuration and software systems configuration, this step will be determined using the present invention
Big system in need to carry out the valve object of key monitoring, be disposed about test terminal, In in the valve for needing key monitoring
Installing water before valve in valve front and rear pipes and valve respectively listens water after sensor 301, valve opening sensor 302 and valve to listen sensing
Device 303 adjusts matched software and hardware system, completes the connection of sensor and access network based on ethernet.
It is the temperature of fluid media (medium), close step 2: parameter setting, the latus rectum including valve and pipeline, pipe material and wall thickness
The parameters such as degree, the velocity of sound and dynamic viscosity also include the relevant sensitivity of sensor, operating temperature range, range, charge/voltage
The parameters such as amplification factor, sample frequency.
Step 3: collecting sensor signal, the content of collecting sensor signal is that water listens sensor 301, valve before valve
Water listens the underwater sound signal of sensor 303 after door jaw opening sensor 302 and valve.
Step 4: data processing, the object of data processing is the underwater sound signal collected in third step by sensor,
When medium starts flowing or valve generation internal leakage in pipe, i.e., is listened in each water and generate corresponding weak current letter in sensor
Number variation, current signal after charge amplifier amplifies, by data collector acquisition and input data processing system, in data
Current signal matches corresponding hydrodynamic noise sound pressure level in processing system, and the decibel value of acoustic pressure can by following formula come
Be converted to hydrodynamic noise grade:
Lp=20log10(p/p0) (1)
(1) in formula: Lp- hydrodynamic noise sound pressure level dB；
The hydrodynamic noise acoustic pressure pa that P- is measured；
P0Hydrodynamic noise acoustic pressure a reference value P0=10-6；
Hereafter, for all hydrophone signals, the hydrodynamic force of each measuring point can also be obtained by Fast Fourier Transform (FFT)
Noise line spectra, and third-octave is calculated in turn, the hydrodynamic noise grade in each frequency range is obtained, which is and frequency domain phase
The data of pass, the frequency range of data processing are 10~20kHz.
Step 5: frequency domain data is uploaded and stores frequency domain data into database.
Step 6: judge whether frequency domain data transfinites value by data storage analysis system 5, the data of remote terminal, which store, divides
Analysis system 5 compares and analyzes flow noise measured value and flow noise characteristic spectral line when leakage and cavitation occurs, and just special
Determine the limit value when measured value in frequency range is stablized with system to be compared, if when the total grade of the flow noise in special frequency channel and leakage
Characteristic spectral line height be overlapped, system will judge in conjunction with pipeline state in which (switch or aperture), if exceeding setting value
Then system gives a warning, and test terminal is required to upload time domain data (while jumping to the 7th and the tenth step), if being not above
Setting value then jumps to the 8th step, while even if being no more than limit value, system also may require that test terminal within the specific interval time
It is spare to upload the storage of frequency domain character data.
Step 7: time domain data is uploaded and stores time domain data into database.
Step 8: whether normal, if so, the 9th step is jumped to, if it is not, then jumping simultaneously if judging frequency domain data variation tendency
Go to the 7th and the tenth step.
Step 9: terminating this time to monitor.
Step 10: software systems give a warning prompt.
User can inquire the valve stream that data store in analysis system 5 in special time period by terminal 4 and make an uproar
Sound data, can also be with real time inspection field data.
Above description is explanation of the invention, is not intended to limit the invention, and limited range of the present invention is referring to right
It is required that within protection scope of the present invention, any type of modification can be made.
Claims (7)
1. a kind of valve leaks and cavitation monitoring device based on underwater sound signal, including hardware system and software systems, feature
Be: the hardware system includes several distributed parallel computing environments (3), and each distributed parallel computing environment (3) is comprising several
Water listens water after sensor (301), valve opening sensor (302) and valve to listen sensor (303) before a valve connecting with terminal, respectively
Distributed parallel computing environment (3) stores analysis platform (1) and several terminals with data respectively commonly through interchanger (2)
(4) it connects；
The software systems include data storage analysis system (5) being set in data storage analysis platform (1), the data
Storing analysis system (5) includes user management module (501), WEB functional module (502), database module (503) and backstage function
Energy module (504), the WEB functional module (502) are also provided in terminal (4).
2. a kind of valve leaks and cavitation monitoring device based on underwater sound signal as described in claim 1, it is characterised in that: each
It is that piezoelectric type water listens sensor that water, which listens after sensor (301) and valve that water listens sensor (303), before valve.
3. a kind of valve leaks and cavitation monitoring device based on underwater sound signal as described in claim 1, it is characterised in that: institute
Database module (503) is stated to include database manipulation function, Data Sheet Design function and controlled by WEB functional module (502)
Database backuping and restoring function.
4. using valve leaks and the method that is monitored of cavitation monitoring device described in claim 1 based on underwater sound signal,
It is characterized in that further comprising the steps of:
Step 1: system configuration；
Step 2: parameter setting；
Step 3: collecting sensor signal；
Step 4: data processing；
Step 5: frequency domain data is uploaded and stores frequency domain data into database；
Step 6: judging whether frequency domain data transfinites value by data storage analysis system, if so, jumping to the 7th and the tenth simultaneously
Step, if it is not, jumping to the 8th step；
Step 7: time domain data is uploaded and stores time domain data into database；
Step 8: whether normal, if so, jumping to the 9th if judging frequency domain data variation tendency by data storage analysis system
Step, if it is not, then jumping to the 7th and the tenth step simultaneously；
Step 9: terminating this time to monitor；
Step 10: software systems give a warning prompt.
5. the method that the valve leaks based on underwater sound signal and cavitation monitoring device are monitored as claimed in claim 4, special
Sign is: first step system configuration includes hardware system configuration and software systems configuration.
6. the method that the valve leaks based on underwater sound signal and cavitation monitoring device are monitored as claimed in claim 4, special
Sign is: the content of third step collecting sensor signal is that water listens sensor (301), valve opening sensor before valve
(302) and after valve water listens the underwater sound signal of sensor (303).
7. the method that the valve leaks based on underwater sound signal and cavitation monitoring device are monitored as claimed in claim 6, special
Sign is: the object of the 4th step data processing is the underwater sound signal collected in third step by sensor.
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| CN201910701122.6A CN110411677A (en) | 2019-07-31 | 2019-07-31 | A kind of valve leaks and cavitation monitoring device and monitoring method based on underwater sound signal |
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| CN201910701122.6A CN110411677A (en) | 2019-07-31 | 2019-07-31 | A kind of valve leaks and cavitation monitoring device and monitoring method based on underwater sound signal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111175041A (en) * | 2020-01-07 | 2020-05-19 | 华能国际电力股份有限公司玉环电厂 | Valve monitoring method and system |
| CN112460325A (en) * | 2020-11-23 | 2021-03-09 | 中国华能集团清洁能源技术研究院有限公司 | Valve sound wave monitoring system and method |
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|---|---|---|---|---|
| JPS59176643A (en) * | 1983-03-25 | 1984-10-06 | Mitsubishi Heavy Ind Ltd | Measuring device for fine leakage of valve |
| JPH01124739A (en) * | 1987-11-10 | 1989-05-17 | Toshiba Corp | Valve leak detector |
| JPH0259637A (en) * | 1988-08-25 | 1990-02-28 | Ishikawajima Harima Heavy Ind Co Ltd | Valve leakage monitoring method |
| WO2008142470A1 (en) * | 2007-05-18 | 2008-11-27 | Hambleden Consultant Group Lp | Electronic device used to detect and signal water leaks in hydraulic circuits installed in buildings |
| CN202126334U (en) * | 2011-05-27 | 2012-01-25 | 长沙理工大学 | Valve leakage detecting device |
| CN203500640U (en) * | 2013-08-29 | 2014-03-26 | 温州职业技术学院 | Distributed valve monitoring device |
| JP2017072448A (en) * | 2015-10-06 | 2017-04-13 | 株式会社東芝 | Valve sheet leak inspection device and valve sheet leak inspection method |
| CN106768689A (en) * | 2016-12-13 | 2017-05-31 | 广东省特种设备检测研究院茂名检测院 | A kind of valve leak wireless detecting system based on acoustic sensor |
-
2019
- 2019-07-31 CN CN201910701122.6A patent/CN110411677A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59176643A (en) * | 1983-03-25 | 1984-10-06 | Mitsubishi Heavy Ind Ltd | Measuring device for fine leakage of valve |
| JPH01124739A (en) * | 1987-11-10 | 1989-05-17 | Toshiba Corp | Valve leak detector |
| JPH0259637A (en) * | 1988-08-25 | 1990-02-28 | Ishikawajima Harima Heavy Ind Co Ltd | Valve leakage monitoring method |
| WO2008142470A1 (en) * | 2007-05-18 | 2008-11-27 | Hambleden Consultant Group Lp | Electronic device used to detect and signal water leaks in hydraulic circuits installed in buildings |
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| CN203500640U (en) * | 2013-08-29 | 2014-03-26 | 温州职业技术学院 | Distributed valve monitoring device |
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| CN106768689A (en) * | 2016-12-13 | 2017-05-31 | 广东省特种设备检测研究院茂名检测院 | A kind of valve leak wireless detecting system based on acoustic sensor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111175041A (en) * | 2020-01-07 | 2020-05-19 | 华能国际电力股份有限公司玉环电厂 | Valve monitoring method and system |
| CN111175041B (en) * | 2020-01-07 | 2021-11-19 | 华能国际电力股份有限公司玉环电厂 | Valve monitoring method and system |
| CN112460325A (en) * | 2020-11-23 | 2021-03-09 | 中国华能集团清洁能源技术研究院有限公司 | Valve sound wave monitoring system and method |
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