CN107035974B - A kind of underground piping leakage inspector and its detection method - Google Patents
A kind of underground piping leakage inspector and its detection method Download PDFInfo
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- CN107035974B CN107035974B CN201710341213.4A CN201710341213A CN107035974B CN 107035974 B CN107035974 B CN 107035974B CN 201710341213 A CN201710341213 A CN 201710341213A CN 107035974 B CN107035974 B CN 107035974B
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- ultrasonic
- ultrasonic wave
- flow
- pipe fitting
- microcontroller
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The present invention provides a kind of underground piping leakage inspector and its detection method, which is made of the part such as ultrasonic flow-velocity meter A, ultrasonic transmitter and data processing module, ultrasonic receiver, ultrasonic flow-velocity meter B and pipeline.The upper and lower stream flow velocity and the difference of ultrasonic transmitter launch time and ultrasonic receiver receiving time measured by two ultrasonic flow-velocity meters, so that it may with conclude underground piping whether leak, and determine in leak the position at leak.The beneficial effects of the present invention are：The position of pipe leakage point can precisely be determined by not excavating ground, not only save labour cost, but also can keep the clean and tidy of urban environment.
Description
Technical field
The present invention relates to a kind of underground piping leakage inspector and its detection methods.
Background technology
Since reform and opening-up, with the continuous improvement of productivity level and the fast development of national economy, China has been enter into
In one Fast Urbanization stage, the water supply of buried underground, heat supply pipeline are crisscross, as fine as a spider's web, extend to each of city
Corner.Once there is seepy question, due to can't see infiltration on ground, so it is difficult to finding leaking area.But if cannot and
Shi Faxian pipe leakages, it will cause water resource and the significant wastage of thermal energy, therefore, to supplying water, heat supply pipeline is supervised in real time
Depending on it is a very important thing in urban construction to find and solve in time the seepy question that pipeline occurs.
In general, checking that pipe leakage is the rattle for by people directly going that pipeline is listened to transmit.Due to when checking from pipeline
Water flow vibration sound when the more than leak transmitted, the also rattle of the stream of people and wagon flow, so checking must be at night
The amount of flow of people and Che carry out when few.Furthermore, it would be desirable to search pipeline according to map, and used by special technical staff
Stethoscope intercepts water flow vibration sound on the surface of pipeline on the ground or directly.This method can only carry out at night, exist first
It is subject to certain restrictions on time, if seepy question occurs in daytime, waits until that night is detected again and will result in the great energy
The wasting of resources；Secondly, it can only be checked in a small range, not be suitable on a large scale leaking tap water and caliduct
Water detect and track inspection.
There is a kind of electronic leakage measuring instrument by sonic to can be used for pipe leakage detection, there are one host and two electronic ears for it, and electronic ear can
To receive underground sound wave (when the late into the night listens leakage, underground sound wave is mainly the grating of underground leak and soil), host can be analyzed
The acoustic characteristic, including waveform, amplitude, wavelength, frequency, phase etc. that electronic ear transmission comes, and with filtering and calculation function；
In actual use, construction brigade usually first uses leakage measuring instrument by sonic or human ear to find the maximum area of leak sound, then base area
Which root or the possible leak of which root pipeline determined, then the pipe ends are excavated for underground pipelines distribution map, by the two of electronic leakage measuring instrument by sonic
A electronic ear contact is at the both ends of pipeline, and then, the phase difference for the sound wave that host is sent according to two electronic ears passes through analysis
Wavelength, velocity of wave, you can calculate the leakage point on the pipeline；If however confuse a pipeline, also will appear this kind of phase difference,
Also, in the gradual search process and an extremely complicated bothersome process for determining leak sound source region.
The presence of leakage point can be measured by ultrasonic flow-velocity meter, method is the upper and lower stream installation two in pipeline
Ultrasonic flow-velocity meter, by the flow velocity that they are measured, when the difference of the flow velocity flowed above and below is sufficiently large it may be concluded that being flowed at two
Have at leak between speed meter, but can not conclude the specific location at leak.
Invention content
In view of the above-mentioned problems, the present invention provides a kind of underground piping leakage inspector, it by ultrasonic flow-velocity meter A,
The part such as ultrasonic transmitter and data processing module, ultrasonic receiver, ultrasonic flow-velocity meter B and pipeline forms.Ultrasonic wave
Current meter A and ultrasonic transmitter are mounted on data processing module on same pipe fitting, ultrasonic receiver and ultrasonic flow-velocity
It counts B to be mounted on another pipe fitting, pipeline is clipped between above-mentioned two pipe fittings, and according to water (flow) direction, their ordering is ultrasound
Current meter A, ultrasonic transmitter and data processing module, pipeline, ultrasonic receiver and ultrasonic flow-velocity meter B.
When carrying out pipe leakage detection, microcontroller acquires the stream of ultrasonic flow-velocity meter A and ultrasonic flow-velocity meter B respectively first
Fast VAAnd VB, work as VA＜ VBOr VA＞ VBBut VA-VBThink that leakage point is not present in pipeline when 2 δ of ＜；Work as VA＞ VB, and VA-VB≥2δ
Can be concluded that pipeline, there are leakage points；Microcontroller sends to ultrasonic transmitter and data processing module and instructs at this time, enables ultrasound
Wave transmitting probe emits ultrasonic wave, and records ultrasonic wave and start t at the time of transmittingA；Meanwhile waiting for the ultrasound of ultrasonic receiver
Wave receiving transducer receives ultrasonic wave；After ultrasonic wave receiving transducer receives ultrasonic wave, microcontroller records time of reception tB.With A,
B indicates that the position of ultrasonic wave transmitting probe and ultrasonic wave receiving transducer, L indicate that the distance between A, B, V indicate ultrasonic wave respectively
Spread speed in the electrodes, then distance of the ultrasonic wave transmitting probe at pipe leakage be
The beneficial effects of the present invention are：The position of pipe leakage point can precisely be determined by not excavating ground, both be saved
Labour cost, and the clean and tidy of urban environment can be kept.
Description of the drawings
Fig. 1 is underground piping leakage inspector outside drawing；Fig. 2 is the signal of underground piping leakage inspector internal structure
Figure.
Label declaration：
1 ultrasonic flow-velocity meter A, 2 ultrasonic transmitters and data processing module, 3 ultrasonic receivers, 4 ultrasonic flow-velocities
Count B, 5 pipelines, 6 conduit A, 7 conduit B, 8 ultrasonic wave transmitting probes, 9 ultrasonic wave receiving transducers
Specific implementation mode
As shown in Figure 1, underground piping leakage inspector is by ultrasonic flow-velocity meter A (1), ultrasonic transmitter and data
The part such as module (2), ultrasonic receiver (3), ultrasonic flow-velocity meter B (4) and pipeline (5) is managed to form.Ultrasonic flow-velocity meter A
(1) it is mounted on same pipe fitting with data processing module (2) with ultrasonic transmitter, ultrasonic receiver (3) and supersonic flow
Speed meter B (4) is mounted on another pipe fitting, and pipeline (5) is clipped between above-mentioned two pipe fittings, according to water (flow) direction their arrangement time
Sequence be ultrasonic flow-velocity meter A (1), ultrasonic transmitter and data processing module (2), pipeline (5), ultrasonic receiver (3) and
Ultrasonic flow-velocity meter B (4).
As shown in Fig. 2, ultrasonic transmitter and data processing module (2) include conduit A (6), ultrasonic wave transmitting probe
(8), data acquisition processing circuit, microcontroller and shell.Ultrasonic wave transmitting probe (8) is mounted on inside pipe fitting, conduit A (6)
It is stretched out outside pipe fitting by inside pipe fitting, sealing is fixed on pipe fitting, and will be outside ultrasonic wave transmitting probe (8) and remaining pipe fitting
The cage connection of part is got up；The conducting wire of ultrasonic wave transmitting probe (8) passes through conduit A (6) to connect with data acquisition processing circuit
It connects, the latter connect with microcontroller.
Ultrasonic receiver (3) include conduit B (7), ultrasonic wave receiving transducer (9), data acquisition processing circuit plate and
Shell；Ultrasonic wave receiving transducer (9) is mounted on inside pipe fitting, and conduit B (7) is stretched out by inside pipe fitting outside pipe fitting, and sealing is solid
It is scheduled on pipe fitting, and the cage connection of ultrasonic wave receiving transducer (9) and data acquisition process circuit board is got up；Ultrasonic wave receives
The conducting wire of probe (9) is connect across conduit B (7) with data acquisition processing circuit, and the latter passes through conducting wire and ultrasonic transmitter
It is connect with the microcontroller of data processing module (2).
Ultrasonic flow-velocity meter A (1) and ultrasonic flow-velocity meter B (4) pass through data line and ultrasonic transmitter and data processing
The microcontroller of module (2) connects, and microcontroller can acquire the digital signal of two current meters output by data line.
When carrying out pipe leakage detection, microcontroller first respectively acquisition ultrasonic flow-velocity meter A (1) and ultrasonic flow-velocity meter B
(4) flow velocity VAAnd VB；Since the measurement of flow velocity is normally present error, flow velocity measurement error is indicated with δ ＞ 0, then
WhereinWithV is indicated respectivelyAAnd VBActual value, | εA|≤δ, | εB|≤δ, therefore
Then
Therefore, work as VA＜ VBOr VA＞ VBBut VA-VBIt can not conclude that there are leakage points for pipeline when 2 δ of ＜；Only work as VA＞
VB, and VA-VB>=2 δ just can be concluded that pipeline, and there are leakage points；It is sent at this time to ultrasonic transmitter and data processing module (2)
Instruction enables ultrasonic wave transmitting probe (8) emit ultrasonic wave, and records ultrasonic wave and start t at the time of transmittingA；Meanwhile waiting for ultrasound
The ultrasonic wave receiving transducer (9) of wave receiver (3) receives ultrasonic wave；It is single after ultrasonic wave receiving transducer (9) receives ultrasonic wave
Piece machine records time of reception tB。
Indicate that the position of ultrasonic wave transmitting probe (8) and ultrasonic wave receiving transducer (9), C indicate pipe leakage respectively with A, B
The projected position being on straight line AB, L indicate that the distance between A, B, x indicate that the distance between A, C, V indicate ultrasonic wave in electricity
Spread speed in extremely, then
This just obtains the distance at ultrasonic wave transmitting probe (8) to pipe leakage.
Claims (2)
1. a kind of underground piping leakage inspector, it is characterised in that：Detection device is sent out by ultrasonic flow-velocity meter A (1), ultrasonic wave
Emitter is formed with data processing module (2), ultrasonic receiver (3), ultrasonic flow-velocity meter B (4) and pipeline (5)；Supersonic flow
Speed meter A (1) and ultrasonic transmitter are mounted on data processing module (2) on same pipe fitting, ultrasonic receiver (3) and ultrasound
Current meter B (4) is mounted on another pipe fitting, and pipeline (5) is clipped between above-mentioned two pipe fittings, according to their arrangement of water (flow) direction
Order is：Ultrasonic flow-velocity meter A (1), ultrasonic transmitter and data processing module (2), pipeline (5), ultrasonic receiver (3)
With ultrasonic flow-velocity meter B (4)；Ultrasonic transmitter and data processing module (2) include conduit A (6), ultrasonic wave transmitting probe
(8), data acquisition processing circuit, microcontroller and shell；Ultrasonic wave transmitting probe (8) is mounted on inside pipe fitting, conduit A (6)
It is stretched out outside pipe fitting by inside pipe fitting, sealing is fixed on pipe fitting, and by ultrasonic wave transmitting probe (8) and remaining pipe fitting exterior part
Cage connection get up；The conducting wire of ultrasonic wave transmitting probe (8) is connect across conduit A (6) with data acquisition processing circuit, after
Person connect with microcontroller；Ultrasonic receiver (3) includes conduit B (7), ultrasonic wave receiving transducer (9), data acquisition process electricity
Road plate and shell；Ultrasonic wave receiving transducer (9) is mounted on inside pipe fitting, and conduit B (7) is stretched out by inside pipe fitting outside pipe fitting,
Sealing is fixed on pipe fitting, and the cage connection of ultrasonic wave receiving transducer (9) and data acquisition process circuit board is got up；Ultrasound
The conducting wire of wave receiving transducer (9) is connect across conduit B (7) with data acquisition processing circuit, and the latter passes through conducting wire and ultrasonic wave
Transmitter is connect with the microcontroller of data processing module (2)；Ultrasonic flow-velocity meter A (1) and ultrasonic flow-velocity meter B (4) pass through number
It is connect with the microcontroller of data processing module (2) according to line and ultrasonic transmitter, microcontroller can acquire two by data line
The digital signal of current meter output.
2. the detection method of underground piping leakage inspector according to claim 1, it is characterised in that：It is indicated with δ ＞ 0
The measurement error of two current meters, carry out pipe leakage detection when, microcontroller first respectively acquisition ultrasonic flow-velocity meter A (1) and
The flow velocity V of ultrasonic flow-velocity meter B (4)AAnd VB, work as VA＜ VBOr VA＞ VBBut VA-VBConclude pipeline without leakage point when 2 δ of ＜；Work as VA
＞ VB, and VA-VB>=2 δ conclude pipeline, and there are leakage points；Microcontroller is sent out to ultrasonic transmitter and data processing module (2) at this time
Instruction is sent, ultrasonic wave transmitting probe (8) is enabled to emit ultrasonic wave, and records ultrasonic wave and starts t at the time of transmittingA；Meanwhile it waiting for super
The ultrasonic wave receiving transducer (9) of acoustic receiver (3) receives ultrasonic wave；After ultrasonic wave receiving transducer (9) receives ultrasonic wave,
Microcontroller records time of reception tB；The distance between ultrasonic wave transmitting probe (8) and ultrasonic wave receiving transducer (9), V are indicated with L
Indicate the spread speed of ultrasonic wave in the electrodes, then distance of the ultrasonic wave transmitting probe (8) at pipe leakage is
。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710341213.4A CN107035974B (en) | 2017-05-07 | 2017-05-07 | A kind of underground piping leakage inspector and its detection method |
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| CN201710341213.4A CN107035974B (en) | 2017-05-07 | 2017-05-07 | A kind of underground piping leakage inspector and its detection method |
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| CN107035974B true CN107035974B (en) | 2018-10-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109613936A (en) * | 2019-01-24 | 2019-04-12 | 深圳供电局有限公司 | Substation's contour extraction |
| CN111550676B (en) * | 2020-06-19 | 2022-02-25 | 陈方斌 | Water pipe water leakage detection device and method |
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| CN103292160A (en) * | 2013-06-27 | 2013-09-11 | 陕西师范大学 | Ultrasonic detection device and method for pipeline leakage |
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| CN103807607A (en) * | 2013-03-12 | 2014-05-21 | 任金恒 | Novel device and method for detecting leakage of fluids in pipelines |
| CN104329570A (en) * | 2014-10-14 | 2015-02-04 | 苏州德鲁森自动化系统有限公司 | Monitoring and control method of water supply pipe network |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2960772C (en) * | 2014-08-14 | 2022-02-22 | Soneter, Inc. | Methods and apparatus for fluid flow monitoring and leak detection |
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Patent Citations (8)
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| CN102853261A (en) * | 2011-06-27 | 2013-01-02 | 国际商业机器公司 | Method and device for determining leakage amount of fluid in conveying pipeline |
| CN103672413A (en) * | 2012-09-26 | 2014-03-26 | 哈尔滨市三和佳美科技发展有限公司 | Method for detecting leakage of inside of tap water pipeline by means of ultrasonic waves |
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| CN103216732A (en) * | 2013-03-25 | 2013-07-24 | 刘仁峰 | Real-time monitoring and positioning system for water leakage of pipe network |
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Effective date of registration: 20191118 Address after: 313000 1-C, building 1, No. 656, Qixing Road, high tech Zone, Wuxing District, Huzhou City, Zhejiang Province Patentee after: Huzhou xinbeilian Network Technology Co.,Ltd. Address before: 264670 Yantai high tech Development Zone, Shandong Province, No. 513 Patentee before: An Kai |
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Effective date of registration: 20191203 Address after: 362000 10th floor, moral education building, 138 Heping North Road, Goutou community, Meiling street, Jinjiang City, Quanzhou City, Fujian Province Patentee after: Fujian toread Environmental Engineering Co.,Ltd. Address before: 313000 1-C, building 1, No. 656, Qixing Road, high tech Zone, Wuxing District, Huzhou City, Zhejiang Province Patentee before: Huzhou xinbeilian Network Technology Co.,Ltd. |
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