CN106813108A - A kind of leakage locating method based on speed difference - Google Patents
A kind of leakage locating method based on speed difference Download PDFInfo
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- CN106813108A CN106813108A CN201710034525.0A CN201710034525A CN106813108A CN 106813108 A CN106813108 A CN 106813108A CN 201710034525 A CN201710034525 A CN 201710034525A CN 106813108 A CN106813108 A CN 106813108A
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- leakage
- speed difference
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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)
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- General Engineering & Computer Science (AREA)
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Abstract
本发明公开了一种基于速度差的泄漏定位方法，包括以下步骤：建立待测管段基于速度差的泄漏定位公式；在待测管道一端以及中间某点安装声波传感器并采集信号；明确泄漏点至两个传感器之间的运行参数，根据参数分别计算泄漏点至传感器之间管段的声速；将传感器采集的声波信号进行处理得到声波信号到达两个传感器的时间差；将声速与时间差代入基于速度差的泄漏定位公式，求解进而对泄漏点进行定位。本发明通过基于速度差的泄漏定位方法，能够解决传感器只能在管道两侧安装的现状，且成本低、安全性高，对油气管道适用性强。
The invention discloses a leakage location method based on speed difference, which comprises the following steps: establishing a leakage location formula based on the speed difference of the pipe section to be measured; According to the operating parameters between the two sensors, the sound velocity from the leak point to the pipe section between the sensors is calculated respectively; the acoustic wave signal collected by the sensor is processed to obtain the time difference between the sound wave signal reaching the two sensors; the sound velocity and time difference are substituted into the speed difference-based Leak location formula, solve and then locate the leak point. The present invention can solve the current situation that sensors can only be installed on both sides of the pipeline through the leakage location method based on the speed difference, and has low cost, high safety and strong applicability to oil and gas pipelines.
Description
Technical field
The invention belongs to oil-gas pipeline sonic method leakage monitoring technical field, more particularly to a kind of leakage based on speed difference
Localization method.
Background technology
Can apply to the leakage monitoring method of oil-gas pipeline at present has many kinds, wherein, sonic method and traditional quality
Balancing method, negative pressure wave method, transient model method etc. are compared to be had many advantages, such as：Sensitivity is high, positioning precision is high, rate of false alarm is low, inspection
The survey time is short, strong adaptability；What is measured is the faint dynamic pressure variable quantity in pipeline fluid, absolute with pipeline performance pressure
Value is unrelated；Response frequency is wider, and detection range is wider etc..
In for the research of oil-gas pipeline sonic method leakage detection and localization technology, research at present mostly concentrates on sensor
Installed in pipe ends, the solution of the time difference that the velocity of sound and sound wave reach pipe ends is calculated, and the accurate fixed of leakage is realized with this
Position.What the raising of improvement and time difference precision that domestic and foreign scholars are also directed to acoustic wave propagation velocity more was studied.According to
Investigation, the patent of the gas oil pipe leakage localization method based on technology of acoustic wave is related to outside Current Domestic mainly to be had：
United States Patent (USP) US6389881 discloses a kind of pipeline real time leak detection means and method based on sound wave technology.
The technology is filtered treatment to signal using dynamic pressure in sensor collection tube using pattern match filtering technique, excludes
Noise, reduces interference, improves positioning precision；
Chinese patent 200810223454.X is disclosed and a kind of carried out pipeline using dynamic pressure and static pressure data and let out
Leak the method and device of monitoring.The method is respectively mounted a set of dynamic pressure transducer and static pressure sensing at pipeline first and last end
Device, sound wave signals in measurement pipe, sound wave signals extract leakage signal after being processed through data acquisition device, and are beaten using gps system
Upper time tag, carries out leakage positioning；
Chinese patent 201510020155.6 discloses a kind of gas oil pipe leakage localization method based on magnitudes of acoustic waves.Should
Method carries out leakage detection and location using low-frequency range magnitudes of acoustic waves is obtained after wavelet analysis is processed, and establishes leakage sound
A kind of propagation model of the ripple in oil-gas pipeline medium, it is proposed that leakage locating method for not considering the velocity of sound and time difference.
Existing patent shorter mention be based on speed difference leakage locating method, to leakage positioning realization be more according to
Arranged in pipe ends by sensor, and then pick up leakage signal.It is embodied in：Sensor is arranged on pipe ends, while
Leakage acoustic signals are propagated to pipe ends to be needed to position leakage using the method for calculating the time difference, and the response time is long,
Scale of investment is big, and security is low, and this all reduces the feasibility and applicability of sonic method popularization.
The content of the invention
To solve the deficiency that prior art is present, the present invention provides a kind of leakage locating method based on speed difference, and it is kept away
The problem of pipe ends is exempted from sensor must to be arranged on, while it to pipe leakage when positioning, the response time becomes
Short, investment is reduced, and security is improved, and increases the feasibility and applicability of sonic method.
In order to realize above-mentioned functions, present invention employs following technical scheme：
A kind of leakage locating method based on speed difference, comprises the following steps：
Step one：Set up the leakage ranging formula that pipeline section to be measured is based on speed difference；
Step 2：Sonic sensor is installed and signal is gathered in pipe under test one end and middle certain point；
Step 3：Leakage point to the operational factor between two sensors is specified, leakage point is calculated extremely according to parameter respectively
The velocity of sound of pipeline section between sensor；
Step 4：The acoustic signals that sensor is gathered process and obtains acoustic signals two times of sensor of arrival
Difference；
Step 5 and step 6：The velocity of sound and time difference are substituted into the leakage ranging formula based on speed difference, is solved and then right
Leakage point is positioned.
Further, in step 3, by velocity of sound c (m/s) computing formulaUnderstand, operational factor includes kv
Volume adiabatic exponent；Z compressibility factors；T temperature, K；R gas constants, kJ/ (kgK), wherein temperature can be by installed in pipelines
On temperature sensor measure, kvAnd z values ask for can be according to real gas temperature adiabatic exponent and the meter of volume adiabatic exponent
Calculation method is obtained, and the pressure used in calculating process can be measured by pressure sensor.
Further, in step one, the leakage ranging formula based on speed difference is：
Wherein, distance is L, the velocity of sound in pipeline section between leakage point and a sensor closer to the distance between two sensors
It is c1；The velocity of sound is c in pipeline section between leakage point and another distant sensor2, and between sound wave two sensors of arrival
Time difference be Δ t.
Further, there is certain distance between two sensors.
Further, the time difference that sound wave reaches between two sensors is that sound wave reaches sensor farther out and relatively near sensing
The difference of the time of device.
The beneficial effects of the invention are as follows：Method is simple, easy to operate, solves the necessary two ends arrangement of sensor at this stage
Problem.The leakage locating method based on speed difference that the present invention is provided, the leakage of speed difference is based on by the pipeline section to be measured set up
Ranging formula, can position to pipe leakage, and low cost, safe, to oil-gas pipeline strong applicability.
Brief description of the drawings
The step of Fig. 1 is leakage locating method of the present invention based on speed difference schematic diagram；
Fig. 2 is the principle schematic of leakage locating method of the present invention based on speed difference.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment is further described to application principle of the invention.
As shown in figure 1, the leakage locating method based on speed difference that the present invention is provided, comprises the following steps：
Step one S101：Set up the leakage ranging formula that pipeline section to be measured is based on speed difference；
Step 2 S102：Sonic sensor is installed and signal is gathered in pipe under test one end and middle certain point；
Step 3 S103：Leakage point to the operational factor between two sensors is specified, by velocity of sound c (m/s) computing formulaUnderstand, operational factor includes kvVolume adiabatic exponent；Z compressibility factors；T temperature, K；R gas constants, kJ/
(kgK), wherein temperature can be measured by the temperature sensor on pipeline, kvAnd z values ask for can be according to actual gas
The computational methods of temperature adiabatic exponent and volume adiabatic exponent are obtained, and the pressure used in calculating process can be passed by pressure
Sensor is measured, and calculates the velocity of sound of leakage point to pipeline section between sensor respectively according to parameter；
Step 4 S104：The acoustic signals that sensor is gathered are processed and are calculated sound wave using cross-correlation method and is believed
Number reach two time differences of sensor；Here, the time difference that sound wave reaches between two sensors is sound wave reaching compared with teletransmission
The difference of the time of sensor and nearlyer sensor；
Step 5 S105 and step 6 S106：The velocity of sound and time difference are substituted into the leakage ranging formula based on speed difference, is entered
And leakage is positioned.
As shown in Fig. 2 the leakage locating method based on speed difference that the present invention is provided, idiographic flow is：
Leakage point occurs at ducts upstream point, and two sensors 1 and 2 are arranged on leakage point downstream, two sensors 1
It is L with the distance between 2, two sensors 1 and the velocity of sound between 2 and leakage point are respectively c1And c2, sound wave road to two sensings
The time difference of device 1 and 2 is Δ t, then can be according to leakage ranging formula：Can solve and obtain leakage point
Position.
Although above-mentioned be described with reference to accompanying drawing to specific embodiment of the invention, not to present invention protection model
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need the various modifications made by paying creative work or deformation still within protection scope of the present invention.
Claims (5)
1. a kind of leakage locating method based on speed difference, it is characterised in that comprise the following steps：
Step one：Set up the leakage ranging formula that pipeline section to be measured is based on speed difference；
Step 2：Sonic sensor is installed and signal is gathered in pipe under test one end and middle certain point；
Step 3：Leakage point to the operational factor between two sensors is specified, leakage point to sensing is calculated respectively according to parameter
The velocity of sound of pipeline section between device；
Step 4：The acoustic signals that sensor is gathered process and obtains acoustic signals two time differences of sensor of arrival；
Step 5 and step 6：The velocity of sound and time difference are substituted into the leakage ranging formula based on speed difference, is solved and then to leakage
Point is positioned.
2. the leakage locating method of speed difference is based on as claimed in claim 1, it is characterised in that in step 3, by velocity of sound c
(m/s) computing formulaUnderstand, operational factor includes kvVolume adiabatic exponent；Z compressibility factors；T temperature, K；R gases
Constant, wherein kJ/ (kgK), temperature can be measured by the temperature sensor on pipeline, kvAnd z values ask for can be according to
Factually the computational methods of border gas temperature adiabatic exponent and volume adiabatic exponent are obtained, and the pressure used in calculating process can lead to
Over-pressed force snesor is measured.
3. the leakage locating method of speed difference is based on as claimed in claim 1, it is characterised in that in step one, based on speed
Spending poor leakage ranging formula is：
Wherein, distance is L between two sensors, and the velocity of sound is c in pipeline section between leakage point and a sensor closer to the distance1；
The velocity of sound is c in pipeline section between leakage point and another distant sensor2, and sound wave reach two sensors between when
Between difference be Δ t.
4. the leakage locating method of speed difference is based on as claimed in claim 3, it is characterised in that had between two sensors
Certain distance.
5. the leakage locating method of speed difference is based on as claimed in claim 3, it is characterised in that sound wave reaches two sensors
Between time difference the difference of time of sensor and nearlyer sensor farther out is reached for sound wave.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710034525.0A CN106813108A (en) | 2017-01-18 | 2017-01-18 | A kind of leakage locating method based on speed difference |
| AU2017393649A AU2017393649B2 (en) | 2017-01-18 | 2017-11-01 | Leakage positioning method based on speed difference |
| PCT/CN2017/108920 WO2018133494A1 (en) | 2017-01-18 | 2017-11-01 | Method of locating leak based on speed difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710034525.0A CN106813108A (en) | 2017-01-18 | 2017-01-18 | A kind of leakage locating method based on speed difference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106813108A true CN106813108A (en) | 2017-06-09 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710034525.0A Pending CN106813108A (en) | 2017-01-18 | 2017-01-18 | A kind of leakage locating method based on speed difference |
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| Country | Link |
|---|---|
| CN (1) | CN106813108A (en) |
| AU (1) | AU2017393649B2 (en) |
| WO (1) | WO2018133494A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218512A (en) * | 2017-07-31 | 2017-09-29 | 西安科技大学 | A mining liquid carbon dioxide delivery device and its leakage monitoring method |
| WO2018133494A1 (en) * | 2017-01-18 | 2018-07-26 | 中国石油大学(华东) | Method of locating leak based on speed difference |
| CN108758354A (en) * | 2018-05-03 | 2018-11-06 | 太原理工大学 | Heat supply pipeline leak detection system and method based on infrasound and reference point |
| CN110131594A (en) * | 2019-05-20 | 2019-08-16 | 辽宁石油化工大学 | A Leak Location Method Based on Ultrasonic Wave Velocity Variation |
| CN114110441A (en) * | 2021-12-02 | 2022-03-01 | 西南石油大学 | Gas transmission trunk valve chamber combustible gas detector arrangement method |
| CN114811453A (en) * | 2022-04-20 | 2022-07-29 | 安徽理工大学 | Pipeline leakage sound wave positioning method based on delay summation |
| CN116592290A (en) * | 2023-04-24 | 2023-08-15 | 国家石油天然气管网集团有限公司 | A pipeline leak detection method, system, storage medium and electronic equipment |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021026645A1 (en) * | 2019-08-12 | 2021-02-18 | Hifi Engineering Inc. | Method of detecting a leak in a fluid conduit |
| US11519812B2 (en) | 2019-09-12 | 2022-12-06 | Flow International Corporation | Acoustic emissions monitoring of high pressure systems |
| US12051316B2 (en) | 2019-12-18 | 2024-07-30 | Hypertherm, Inc. | Liquid jet cutting head sensor systems and methods |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11201812A (en) * | 1998-01-08 | 1999-07-30 | Mitsui Eng & Shipbuild Co Ltd | Sound velocity measurement method in fluid piping |
| CN1712920A (en) * | 2005-07-18 | 2005-12-28 | 天津大学 | Method for detecting oil and gas pipeline leakage by adding dynamic micro-pressure signal |
| WO2013116087A1 (en) * | 2012-02-02 | 2013-08-08 | Massachusetts Institute Of Technology | In-pipe mobile cross-correlation-based system for leak detection |
| CN104595729A (en) * | 2015-01-15 | 2015-05-06 | 中国石油大学(华东) | Oil and gas pipeline leakage positioning method based on sound wave amplitude |
| CN105135216A (en) * | 2015-07-30 | 2015-12-09 | 云南大红山管道有限公司 | Method for locating leakage position of ore pulp conveying pipe |
| CN105953080A (en) * | 2016-07-18 | 2016-09-21 | 中国石油大学(华东) | Sound wave leakage positioning method based on same-side sensor arrangement |
| CN106195648A (en) * | 2016-07-18 | 2016-12-07 | 中国石油大学(华东) | A kind of experimental test procedures of reducer pipe equivalence pipe range |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS516083A (en) * | 1974-07-03 | 1976-01-19 | Nippon Kokan Kk | Ryutaino morekenchisochi |
| JPS62297741A (en) * | 1986-06-17 | 1987-12-24 | Kensaku Imaichi | Detecting method for leaking place of conduit system fluid |
| US5548530A (en) * | 1995-04-24 | 1996-08-20 | Baumoel; Joseph | High-precision leak detector and locator |
| IT1399026B1 (en) * | 2009-09-29 | 2013-04-05 | Eni Spa | SYSTEM AND METHOD FOR THE CONTINUOUS DETECTION OF IMPACTS ON CONDUCT FOR THE TRANSPORT OF FLUIDS, PARTICULARLY SUITABLE FOR SUBMARINE PIPES |
| CN103672415B (en) * | 2013-12-06 | 2016-01-27 | 中国石油大学(华东) | Based on the gas pipe leakage detection of non-intervention type sensor and navigation system and method |
| CN105782729A (en) * | 2016-05-10 | 2016-07-20 | 肖香福 | Automatic leak detection device for fuel gas pipeline |
| CN106813108A (en) * | 2017-01-18 | 2017-06-09 | 中国石油大学(华东) | A kind of leakage locating method based on speed difference |
-
2017
- 2017-01-18 CN CN201710034525.0A patent/CN106813108A/en active Pending
- 2017-11-01 WO PCT/CN2017/108920 patent/WO2018133494A1/en not_active Ceased
- 2017-11-01 AU AU2017393649A patent/AU2017393649B2/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11201812A (en) * | 1998-01-08 | 1999-07-30 | Mitsui Eng & Shipbuild Co Ltd | Sound velocity measurement method in fluid piping |
| CN1712920A (en) * | 2005-07-18 | 2005-12-28 | 天津大学 | Method for detecting oil and gas pipeline leakage by adding dynamic micro-pressure signal |
| WO2013116087A1 (en) * | 2012-02-02 | 2013-08-08 | Massachusetts Institute Of Technology | In-pipe mobile cross-correlation-based system for leak detection |
| CN104595729A (en) * | 2015-01-15 | 2015-05-06 | 中国石油大学(华东) | Oil and gas pipeline leakage positioning method based on sound wave amplitude |
| CN105135216A (en) * | 2015-07-30 | 2015-12-09 | 云南大红山管道有限公司 | Method for locating leakage position of ore pulp conveying pipe |
| CN105953080A (en) * | 2016-07-18 | 2016-09-21 | 中国石油大学(华东) | Sound wave leakage positioning method based on same-side sensor arrangement |
| CN106195648A (en) * | 2016-07-18 | 2016-12-07 | 中国石油大学(华东) | A kind of experimental test procedures of reducer pipe equivalence pipe range |
Non-Patent Citations (2)
| Title |
|---|
| 刘翠伟等: "基于音波法的输气管道泄漏检测与定位", 《化工学报》 * |
| 赵方生: "基于音波的输气管道泄漏检测及定位试验研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018133494A1 (en) * | 2017-01-18 | 2018-07-26 | 中国石油大学(华东) | Method of locating leak based on speed difference |
| CN107218512A (en) * | 2017-07-31 | 2017-09-29 | 西安科技大学 | A mining liquid carbon dioxide delivery device and its leakage monitoring method |
| CN108758354A (en) * | 2018-05-03 | 2018-11-06 | 太原理工大学 | Heat supply pipeline leak detection system and method based on infrasound and reference point |
| CN108758354B (en) * | 2018-05-03 | 2023-09-12 | 太原理工大学 | Heating pipeline leakage detection system and method based on infrasound waves and reference points |
| CN110131594A (en) * | 2019-05-20 | 2019-08-16 | 辽宁石油化工大学 | A Leak Location Method Based on Ultrasonic Wave Velocity Variation |
| CN114110441A (en) * | 2021-12-02 | 2022-03-01 | 西南石油大学 | Gas transmission trunk valve chamber combustible gas detector arrangement method |
| CN114110441B (en) * | 2021-12-02 | 2023-09-15 | 西南石油大学 | A method of arranging combustible gas detectors in valve chambers of gas transmission trunk lines |
| CN114811453A (en) * | 2022-04-20 | 2022-07-29 | 安徽理工大学 | Pipeline leakage sound wave positioning method based on delay summation |
| CN116592290A (en) * | 2023-04-24 | 2023-08-15 | 国家石油天然气管网集团有限公司 | A pipeline leak detection method, system, storage medium and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018133494A1 (en) | 2018-07-26 |
| AU2017393649A1 (en) | 2018-11-22 |
| AU2017393649B2 (en) | 2020-07-09 |
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