CN107101682A - A kind of detecting system of ultrasound examination quantity of gas leakage - Google Patents
A kind of detecting system of ultrasound examination quantity of gas leakage Download PDFInfo
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- CN107101682A CN107101682A CN201710370273.9A CN201710370273A CN107101682A CN 107101682 A CN107101682 A CN 107101682A CN 201710370273 A CN201710370273 A CN 201710370273A CN 107101682 A CN107101682 A CN 107101682A
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- module
- leakage
- microprocessor
- gas leakage
- gas
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/666—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters by detecting noise and sounds generated by the flowing fluid
-
- 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
Abstract
The present invention relates to a kind of detecting system of ultrasound examination quantity of gas leakage, ultrasonic probe is electrically connected with ultrasonic detection device, ultrasonic probe is uniformly embedded in duct wall, the ultrasonic detection device includes pre-amplification circuit, bandwidth-limited circuit, sinusoidal signal peak-detector circuit and microprocessor, pre-amplification circuit is electrically connected with by bandwidth-limited circuit and sinusoidal signal peak-detector circuit, sinusoidal signal peak-detector circuit is electrically connected with microprocessor, microprocessor also respectively with locating module, pipe electromagnetic valve and communication module are electrically connected with, ultrasonic detection device will be sent to microprocessor after the gas leakage ultrasonic signal transacting collected, microprocessor draws a circle to approve gas leak position by locating module, the open and-shut mode of microprocessor control pipeline magnetic valve, microprocessor is electrical with base station by communication module.Beneficial effect of the present invention：Detect that accuracy is high, can accurately find leakage point position, estimate the leakage rate of leakage gas.
Description
Technical field
The present invention relates to a kind of detecting system for detecting quantity of gas leakage, more particularly to a kind of leakage of ultrasound examination gas
The detecting system of amount.
Background technology
Pipeline is the important tool for conveying gas, because gas in pipelines pressure ratio is larger, is easily managed over time
The aging in road, if pipeline is located on the downside of road foundation, easily there is crack and breakage in the vibrations passed through with automobile, pipeline,
Because mostly conveying is gas flammable or with certain toxicity in pipeline, very big potential safety hazard can be caused after leakage；And
The detecting system of traditional gas leakage rate, detection accuracy is low, it is impossible to be accurately positioned leak position, and can not be according to leakage
Amount closes pipeline in time, major safety problems easily occurs.
The content of the invention
The technical problems to be solved by the invention are：A kind of detecting system of ultrasound examination quantity of gas leakage, is solved
The detecting system of traditional gas leakage rate, detection accuracy is low, it is impossible to be accurately positioned leak position, and can not be according to leakage
The problem of amount is closed pipeline in time.
The present invention for solution it is set forth above the problem of the technical scheme that is used be：
A kind of detecting system of ultrasound examination quantity of gas leakage, including ultrasonic probe 1, ultrasonic detection device 2, positioning mould
Block 7, pipe electromagnetic valve 8 and communication module 9, ultrasonic probe 1 are electrically connected with ultrasonic detection device 2, and the ultrasonic wave is visited
First 1 is uniformly embedded in duct wall, and the ultrasonic detection device 2 includes pre-amplification circuit 3, bandwidth-limited circuit 4, sine
Signal peak detecting circuit 5 and microprocessor 6, pre-amplification circuit 3 pass through bandwidth-limited circuit 4 and sinusoidal signal peak detection
Circuit 5 is electrically connected with, and sinusoidal signal peak-detector circuit 5 is electrically connected with microprocessor 6, microprocessor 6 also respectively with positioning
Module 7, pipe electromagnetic valve 8 and communication module 9 are electrically connected with, and ultrasonic detection device 2 is by the gas leakage ultrasonic collected
Microprocessor 6 is sent to after signal transacting, microprocessor 6 draws a circle to approve gas leak position by locating module 7, and microprocessor 6 is controlled
The open and-shut mode of tubing giving sufficient strength magnetic valve 8, microprocessor 6 is electrical by communication module 9 and base station 10.
The detecting system of described ultrasound examination quantity of gas leakage also includes clock and reseting module 11 and sound and light alarm
Device 12, and clock is electrically connected with microprocessor 6 respectively with reseting module 11 and audible-visual annunciator 12, clock and reseting module 11
For setting certain time interval, then control by microprocessor 6 open and-shut mode of audible-visual annunciator 12, and clock and reset
Module 11 is additionally operable to determine gas leakage time elapse, can set intervals and be alarmed, cause maintainer's
It is vigilant, while and clock is additionally operable to measure gas leakage time elapse, the leakage rate for calculating gas leakage with reseting module.
Described microprocessor 6 also has the function of estimation leakage gas flow value, and by the leakage gas flow value
Base station 10 is sent to by communication module 9, using the time elapse t1 and t2 of measurement, the flowing of setting gas and ultrasonic propagation road
Angle between line P is θ, and sets the distances of two adjacent ultrasonic probes as L, and gas flow rate v=（L/2cosθ）
(（1/T1）-（1/T2）), then leakage gas flow value is Q=kvS, and wherein S accumulates for gas transmission pipeline plane of structure.
Described microprocessor 6 is MSP430F2132 type microprocessors, with disposal ability is strong, arithmetic speed is fast, ultralow
In power consumption, piece the characteristics of the development environment of aboundresources and convenience and high-efficiency.
The bandpass range of described bandwidth-limited circuit 4 is 36.2-44.2kHz, is drawn by experiment, in this bandpass range
Interior gas leakage ultrasonic energy is all that than larger, and leakage sound and background noise energy differences are also maximum, Ke Yizeng
The sensitivity of adding system.
Described pre-amplification circuit 3 is the operational amplifier of AD620 types three, low cost, high-precision meter amplifier, gain
Scope is 1 to 10000.
The strength range for the leakage ultrasonic wave that described sonic probe 1 is detected is 38-42kHz, and this scope gas leakage surpasses
Acoustic wave energy is than larger, and leakage sound and background noise energy differences are also maximum, can increase the sensitivity of system.
The software section of described microprocessor 6 is included with lower module：System initialization module, leak detection module, let out
Locating module, leakage rate estimation block and pipe electromagnetic valve control module are leaked, system initialization module is gathered for configuration data
The setting of card, setting store path and parameter, the initialization of finishing device；Leak detection module is used to whether detect gas leakage
In the presence of；The position that locating module is used to determine leakage module is leaked, and location information is sent to base station, breakdown lorry is instructed or sets
Standby arrival；Leakage rate estimation block is used for the leakage rate for estimating gas, and is let out in quantity of gas leakage beyond the gas set
During leakage quantity minimum, out code is sent to pipe electromagnetic valve control module.
The software section of described microprocessor 6 also includes clock and reseting module, alarm module, clock and reseting module
For setting certain time interval, then send and instruct to alarm module, control the opening and closing of audible-visual annunciator 12.
The beneficial effects of the present invention are：1st, detection accuracy is greatly improved, and can more accurately find leakage point
Particular location, while it is estimated that the leakage rate of leakage gas, is easy to Quick overhaul.2nd, ultrasound examination quantity of gas leakage
Detecting system also includes clock and reseting module and audible-visual annunciator, and clock and reseting module and audible-visual annunciator respectively with it is micro-
Processor is electrically connected with, and clock is used to set certain time interval with reseting module, then controls acousto-optic report by microprocessor
The open and-shut mode of alert device, and clock is additionally operable to determine gas leakage time elapse with reseting module, can set between certain time
Every being alarmed, cause maintainer's vigilant, while and clock be additionally operable to determine gas leakage time elapse with reseting module,
Leakage rate for calculating gas leakage.3rd, microprocessor also has the function of estimation leakage gas flow value, and is let out described
Dew gas flow values are sent to base station by communication module, using the time elapse t1 and t2 of measurement, and setting gas flows and super
Angle between Acoustic Wave Propagation route P is θ, and sets the distances of two adjacent ultrasonic probes as L, and gas flow rate v=
（L/2cosθ）(（1/T1）-（1/T2）), then leakage gas flow value is Q=kvS, and wherein S accumulates for gas transmission pipeline plane of structure.4、
Microprocessor is MSP430F2132 type microprocessors, and with disposal ability is strong, arithmetic speed fast, in super low-power consumption, piece, resource is rich
The characteristics of development environment of rich and convenience and high-efficiency.5th, the bandpass range of bandwidth-limited circuit is 36.2-44.2kHz, passes through experiment
Draw, the gas leakage ultrasonic energy in this bandpass range is all and leakage sound and background noise energy than larger
Difference is also maximum, can increase the sensitivity of system.6th, pre-amplification circuit is the operational amplifier of AD620 types three, low cost, height
Precision instrument amplifier, gain ranging is 1 to 10000.7th, the strength range of the leakage ultrasonic wave of sonic probe detection is 38-
42kHz, this scope gas leakage ultrasonic energy is than larger, and leakage sound and background noise energy differences are also maximum, can be with
The sensitivity of increase system.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Ultrasonic detection device structured flowchart in Fig. 2 Fig. 1.
Wherein, 1- ultrasonic probes, 2- ultrasonic detection devices, 3- pre-amplification circuits, 4- bandwidth-limited circuits, 5- be just
String signal peak-detector circuit, 6- microprocessors, 7- locating modules, 8- pipe electromagnetic valves, 9- communication modules, 10- base stations, 11-
Clock and reseting module, 12- audible-visual annunciators.
Embodiment
Embodiments of the invention are further illustrated below in conjunction with the accompanying drawings.
Reference picture 1-2, a kind of detecting system of ultrasound examination quantity of gas leakage described in present embodiment, including
Ultrasonic probe 1, ultrasonic detection device 2, locating module 7, pipe electromagnetic valve 8 and communication module 9, ultrasonic probe 1 is with surpassing
Acoustic detector 2 is electrically connected with, and the ultrasonic probe 1 is uniformly embedded in duct wall, and the ultrasonic detection device 2 is wrapped
Include pre-amplification circuit 3, bandwidth-limited circuit 4, sinusoidal signal peak-detector circuit 5 and microprocessor 6, pre-amplification circuit 3
It is electrically connected with by bandwidth-limited circuit 4 with sinusoidal signal peak-detector circuit 5, sinusoidal signal peak-detector circuit 5 and Wei Chu
Reason device 6 is electrically connected with, and microprocessor 6 is also electrically connected with locating module 7, pipe electromagnetic valve 8 and communication module 9 respectively, ultrasound
Ripple detection means 2 will be sent to microprocessor 6 after the gas leakage ultrasonic signal transacting collected, it is fixed that microprocessor 6 passes through
The position delineation gas of module 7 leak position, the open and-shut mode of the control pipeline magnetic valve 8 of microprocessor 6, microprocessor 6 passes through communication
Module 9 and base station 10 are electrical.
The detecting system of described ultrasound examination quantity of gas leakage also includes clock and reseting module 11 and sound and light alarm
Device 12, and clock is electrically connected with microprocessor 6 respectively with reseting module 11 and audible-visual annunciator 12, clock and reseting module 11
For setting certain time interval, then control by microprocessor 6 open and-shut mode of audible-visual annunciator 12, and clock and reset
Module 11 is additionally operable to determine gas leakage time elapse, can set intervals and be alarmed, cause maintainer's
It is vigilant, while and clock is additionally operable to measure gas leakage time elapse, the leakage rate for calculating gas leakage with reseting module.
Described microprocessor 6 also has the function of estimation leakage gas flow value, and by the leakage gas flow value
Base station 10 is sent to by communication module 9, using the time elapse t1 and t2 of measurement, the flowing of setting gas and ultrasonic propagation road
Angle between line P is θ, and sets the distances of two adjacent ultrasonic probes as L, and gas flow rate v=（L/2cosθ）
(（1/T1）-（1/T2）), then leakage gas flow value is Q=kvS, and wherein S accumulates for gas transmission pipeline plane of structure.
Described microprocessor 6 is MSP430F2132 type microprocessors, with disposal ability is strong, arithmetic speed is fast, ultralow
In power consumption, piece the characteristics of the development environment of aboundresources and convenience and high-efficiency.
The bandpass range of described bandwidth-limited circuit 4 is 39kHz, is drawn by experiment, letting out in this bandpass range
Gas leakage body ultrasonic energy is all that than larger, and leakage sound and background noise energy differences are also maximum, can increase system
Sensitivity.
Described pre-amplification circuit 3 is the operational amplifier of AD620 types three, low cost, high-precision meter amplifier, gain
Scope is to 10000.
The strength range for the leakage ultrasonic wave that described sonic probe 1 is detected is 40kHz, this scope gas leakage ultrasonic wave
Energy ratio is larger, and leakage sound and background noise energy differences are also maximum, can increase the sensitivity of system.
The software section of described microprocessor 6 is included with lower module：System initialization module, leak detection module, let out
Locating module, leakage rate estimation block and pipe electromagnetic valve control module are leaked, system initialization module is gathered for configuration data
The setting of card, setting store path and parameter, the initialization of finishing device；Leak detection module is used to whether detect gas leakage
In the presence of；The position that locating module is used to determine leakage module is leaked, and location information is sent to base station, breakdown lorry is instructed or sets
Standby arrival；Leakage rate estimation block is used for the leakage rate for estimating gas, and is let out in quantity of gas leakage beyond the gas set
During leakage quantity minimum, out code is sent to pipe electromagnetic valve control module.
The software section of described microprocessor 6 also includes clock and reseting module, alarm module, clock and reseting module
For setting certain time interval, then send and instruct to alarm module, control the opening and closing of audible-visual annunciator 12.
The beneficial effect of present embodiment is：1st, detection accuracy is greatly improved, and can more accurately be found
The particular location of leakage point, while it is estimated that the leakage rate of leakage gas, is easy to Quick overhaul.2nd, ultrasound examination gas
The detecting system of leakage rate also includes clock and reseting module and audible-visual annunciator, and clock and reseting module and audible-visual annunciator
It is electrically connected with respectively with microprocessor, clock is used to set certain time interval with reseting module, then passes through microprocessor control
The open and-shut mode of audible-visual annunciator processed, and clock is additionally operable to measure gas leakage time elapse with reseting module, can set one
Fix time to be spaced and alarmed, cause maintainer's vigilant, while and clock is additionally operable to measure gas leakage with reseting module
Time elapse, the leakage rate for calculating gas leakage.3rd, microprocessor also has the function of estimation leakage gas flow value, and
The leakage gas flow value is sent to base station by communication module, using the time elapse t1 and t2 of measurement, gas is set
It is θ to flow the angle between ultrasonic propagation route P, and sets the distances of two adjacent ultrasonic probes as L, and gas
Flow velocity v=（L/2cosθ）(（1/T1）-（1/T2）), then leakage gas flow value is Q=kvS, and wherein S is that gas transmission pipeline is horizontal
Area.4th, microprocessor is MSP430F2132 type microprocessors, with disposal ability is strong, arithmetic speed is fast, super low-power consumption, piece
The characteristics of development environment of interior aboundresources and convenience and high-efficiency.5th, the bandpass range of bandwidth-limited circuit is 36.2-44.2kHz,
Drawn by experiment, the gas leakage ultrasonic energy in this bandpass range is all and leakage sound and background than larger
Noise energy difference is also maximum, can increase the sensitivity of system.6th, pre-amplification circuit is the operational amplifier of AD620 types three,
Low cost, high-precision meter amplifier, gain ranging are 1 to 10000.7th, the intensity model of the leakage ultrasonic wave of sonic probe detection
Enclose for 38-42kHz, this scope gas leakage ultrasonic energy is than larger, and leakage sound and background noise energy differences are also most
Greatly, the sensitivity of system can be increased.
The specific embodiment of the present invention is not construed as limiting the invention, every similar structure and change using the present invention
Change, within the scope of the present invention.
Claims (9)
1. a kind of detecting system of ultrasound examination quantity of gas leakage, it is characterised in that：Including ultrasonic probe（1）, ultrasonic wave
Detection means（2）, locating module（7）, pipe electromagnetic valve（8）And communication module（9）, ultrasonic probe（1）With ultrasound examination
Device（2）It is electrically connected with, the ultrasonic probe（1）Uniformly it is embedded in duct wall, the ultrasonic detection device（2）Including
Pre-amplification circuit（3）, bandwidth-limited circuit（4）, sinusoidal signal peak-detector circuit（5）And microprocessor（6）, preposition amplification
Circuit（3）Pass through bandwidth-limited circuit（4）With sinusoidal signal peak-detector circuit（5）It is electrically connected with, sinusoidal signal peak detection
Circuit（5）With microprocessor（6）It is electrically connected with, microprocessor（6）Also respectively with locating module（7）, pipe electromagnetic valve（8）With it is logical
Interrogate module（9）It is electrically connected with, ultrasonic detection device（2）It is micro- by being sent to after the gas leakage ultrasonic signal transacting collected
Processor（6）, microprocessor（6）Pass through locating module（7）Draw a circle to approve gas leak position, microprocessor（6）Control pipeline electromagnetism
Valve（8）Open and-shut mode, microprocessor（6）Pass through communication module（9）With base station（10）Electrically.
2. a kind of detecting system of ultrasound examination quantity of gas leakage as claimed in claim 1, it is characterised in that：Described is super
The detecting system of sonic detection quantity of gas leakage also includes clock and reseting module（11）And audible-visual annunciator（12）, and clock with
Reseting module（11）And audible-visual annunciator（12）Respectively with microprocessor（6）It is electrically connected with, clock and reseting module（11）For
Certain time interval is set, then passes through microprocessor（6）Control audible-visual annunciator（12）Open and-shut mode, and clock and reset
Module（11）It is additionally operable to determine gas leakage time elapse.
3. a kind of detecting system of ultrasound examination quantity of gas leakage as claimed in claim 1, it is characterised in that：Described is micro-
Processor（6）Also there is the function of estimation leakage gas flow value, and the leakage gas flow value is passed through into communication module（9）
It is sent to base station（10）.
4. a kind of detecting system of ultrasound examination quantity of gas leakage as claimed in claim 1, it is characterised in that：Described is micro-
Processor（6）For MSP430F2132 type microprocessors.
5. a kind of detecting system of ultrasound examination quantity of gas leakage as claimed in claim 1, it is characterised in that：Described band
Bandpass filter circuit（4）Bandpass range be 36.2-44.2kHz.
6. a kind of detecting system of ultrasound examination quantity of gas leakage as claimed in claim 1, it is characterised in that：Before described
Put amplifying circuit（3）For the operational amplifier of AD620 types three.
7. a kind of detecting system of ultrasound examination quantity of gas leakage as described in any one of claim 1-6, its feature
It is：Described sonic probe（1）The strength range of the leakage ultrasonic wave of detection is 38-42kHz.
8. a kind of detecting system of ultrasound examination quantity of gas leakage as claimed in claim 7, it is characterised in that：Described is micro-
Processor（6）Software section include with lower module：System initialization module, leak detection module, leakage locating module, leakage
Estimation block and pipe electromagnetic valve control module are measured, system initialization module is used for configuration data capture card, setting store path
With the setting of parameter, the initialization of finishing device；Leak detection module is used to detect that gas leakage whether there is；Leak positioning mould
Block is used for the position for determining leakage module, and sends location information to base station, instructs the arrival of breakdown lorry or equipment；Leakage rate
Estimation block is used for the leakage rate for estimating gas, and when quantity of gas leakage exceeds the quantity of gas leakage minimum set, to
Pipe electromagnetic valve control module sends out code.
9. a kind of detecting system of ultrasound examination quantity of gas leakage as claimed in claim 8, it is characterised in that：Described is micro-
Processor（6）Software section also include clock and reseting module, alarm module, clock is used to set certain with reseting module
Time interval, then sends to alarm module and instructs, control audible-visual annunciator（12）Opening and closing.
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| CN201710370273.9A CN107101682A (en) | 2017-05-23 | 2017-05-23 | A kind of detecting system of ultrasound examination quantity of gas leakage |
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| CN201710370273.9A CN107101682A (en) | 2017-05-23 | 2017-05-23 | A kind of detecting system of ultrasound examination quantity of gas leakage |
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| CN201710370273.9A Pending CN107101682A (en) | 2017-05-23 | 2017-05-23 | A kind of detecting system of ultrasound examination quantity of gas leakage |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444653A (en) * | 2018-03-09 | 2018-08-24 | 北京理工大学 | A kind of face formation ultrasonic gas leak point positioning detection device and method |
| CN110906994A (en) * | 2019-12-27 | 2020-03-24 | 苏州东剑智能科技有限公司 | Ultrasonic water meter and intelligent water leakage detection method thereof |
| CN110932841A (en) * | 2019-11-27 | 2020-03-27 | 北京智慧云测信息技术有限公司 | System and method for searching optimal acquisition position of electromagnetic side information |
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| CN103424230A (en) * | 2012-08-22 | 2013-12-04 | 上海理工大学 | Ultrasonic-based valve leakage wireless detection device and method |
| CN205719438U (en) * | 2016-04-29 | 2016-11-23 | 国家电网公司 | A kind of ultrasound wave air tightness detection system based on multisensor |
| CN106352243A (en) * | 2016-10-20 | 2017-01-25 | 山东科技大学 | Gas transmission pipeline leakage detection system based on acoustic method |
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Patent Citations (5)
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| CN202419144U (en) * | 2011-12-30 | 2012-09-05 | 淮阴工学院 | Virtual instrument-based underground steam pipeline leakage detection device |
| CN103424230A (en) * | 2012-08-22 | 2013-12-04 | 上海理工大学 | Ultrasonic-based valve leakage wireless detection device and method |
| CN102967419A (en) * | 2012-11-12 | 2013-03-13 | 北京理工大学 | Linear array type ultrasonic leak detection device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108444653A (en) * | 2018-03-09 | 2018-08-24 | 北京理工大学 | A kind of face formation ultrasonic gas leak point positioning detection device and method |
| CN108444653B (en) * | 2018-03-09 | 2019-11-12 | 北京理工大学 | A kind of face formation ultrasonic gas leak point positioning detection device and method |
| CN110932841A (en) * | 2019-11-27 | 2020-03-27 | 北京智慧云测信息技术有限公司 | System and method for searching optimal acquisition position of electromagnetic side information |
| CN110906994A (en) * | 2019-12-27 | 2020-03-24 | 苏州东剑智能科技有限公司 | Ultrasonic water meter and intelligent water leakage detection method thereof |
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