WO2018030919A1 - Procédé de détermination d'un emplacement de fuite dans un conduit et procédé de mise en œuvre - Google Patents
Procédé de détermination d'un emplacement de fuite dans un conduit et procédé de mise en œuvre Download PDFInfo
- Publication number
- WO2018030919A1 WO2018030919A1 PCT/RU2017/050066 RU2017050066W WO2018030919A1 WO 2018030919 A1 WO2018030919 A1 WO 2018030919A1 RU 2017050066 W RU2017050066 W RU 2017050066W WO 2018030919 A1 WO2018030919 A1 WO 2018030919A1
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- WO
- WIPO (PCT)
- Prior art keywords
- acoustic
- pipeline
- signal
- leak
- sensors
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 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
Definitions
- the group of inventions relates to a method and apparatus for determining the location of a leak of liquid or gas in pipelines and is intended to determine the coordinates of a leak in hard-to-reach places of a pipeline, for example, gas pipelines and oil pipelines.
- a known method for detecting the location of a leak disclosed in US 5058419 A, publ. 10/22/19991.
- the method consists in receiving sound by the first sensor installed on the pipeline, receiving a signal by the second sensor installed on the same pipeline at a distance from the first, performing mathematical processing of the signals, calculating the delay time of the signal from the leak, determining the distance to the leak from the first and second sensors .
- This correlation method has several disadvantages. To calculate the distance to the leak, it is necessary to know the value of the velocity of the group velocity of sound in the pipeline with the liquid. In this patent, this speed is determined by calculation, which can lead to significant errors in determining the distance to the leak. With an error in determining the speed of 5%, the error in determining the distance in a pipeline with a length of 1000 m can reach ⁇ 5 0 m, which is not acceptable for earthworks in urban conditions.
- the closest analogue of the claimed group of the invention is a method and device for determining the location of a leak in a pipeline, disclosed in RU 22498020 C2, publ. 04/10/2005.
- the method disclosed in the closest analogue consists in receiving noise signals by the first and second acoustic sensors, converting these acoustic signals into electrical ones, filtering and sampling the electrical signals and determining the leak location by the delay time of the noise leak signals, while the acoustic sensors are installed side by side, one on the pipeline, the second next to the pipeline in the environment, the first sensor is shielded from noise in the environment, the second sensor is shielded from noise in the pipeline.
- an artificial noise signal is excited in the pipeline and in its environment, a noise signal propagating through the pipeline by the first acoustic sensor is received, a noise signal propagating through the environment by the second acoustic sensor, electrical signals of the first and second acoustic sensors after filtering and sampling, they are subjected to inter-spectral processing, according to the data on the real and imaginary parts of the mutual spectrum, the value of R H and the calculated value of the propagation velocity of acoustic waves in the medium find the propagation velocity group waves in the pipeline, in the presence of a leak signal, perform the inter-spectral processing of the filtered, discretized leak signals converted to electrical signals received by the first and second acoustic sensors, the delay time of the noise leak signals received by the first and second acoustic sensors, determine data on the real and imaginary parts of the mutual spectrum of noise leak signals, after which the leak location is determined taking into account the propagation velocity of acoustic waves in the medium and the velocity
- the device for determining a leak in a pipeline contains first and second receiving paths, each of which contains series-connected first and second acoustic sensors, respectively, an amplifier, a filter, an analog-to-digital converter, the first acoustic sensor having acoustic contact with piping and is acoustically shielded from acoustic waves in the environment of the conduit, and a second acoustic is acoustically shielded from acoustic waves propagating through the pipeline, a mutual spectrum analyzer is introduced into the device, the first and second inputs of which are connected to the outputs of the analog-to-digital converters of the first and second receiving paths, respectively, a unit for calculating the distance and propagation velocity of group waves in the pipeline and an indicator, a memory unit is also introduced the propagation velocities of group waves in the pipeline and in the surrounding medium, the input of which is connected to the second output, and the output to the second input of the block computing states
- the objective of the claimed group of inventions is to develop a method and device for determining the location of a leak in the pipeline, ensuring the accuracy of determining the location of a leak in the pipeline.
- the technical result of the claimed group of inventions is to increase the accuracy and reliability of determining the location of a leak in the pipeline.
- the specified technical result is achieved due to the fact that the method of determining the place of a leak in the pipeline includes the following steps:
- the forced excitation of acoustic vibrations in the pipeline is carried out at a predetermined distance from the means for generating acoustic signals to the first acoustic sensor, and the average group velocity of sound propagation of the acoustic signal is determined based on the travel time the acoustic signal from the means for generating acoustic signals to the first acoustic sensor, which is the receiver of the acoustic signal from the means for creating acoustic signals to determine the speed of sound.
- the acoustic waves are forcedly excited in the pipeline at a predetermined distance from the acoustic signal generating means to the first acoustic sensor, and the average group velocity of sound propagation of the acoustic signal is determined based on the acoustic signal propagation time between the first and second acoustic sensors, with the first and second acoustic sensors are correlation and receivers of the acoustic signal from the means for creating acoustic signals for determining the speed of sound.
- Forced acoustic vibrations in the pipeline are carried out at an unknown distance from the acoustic signal generating means to the first acoustic sensor, and the average group velocity of sound propagation of the acoustic signal is determined based on the acoustic signal propagation time between the first and second acoustic sensors, while the first and second acoustic sensors are correlation and receivers of the acoustic signal from the means for creating acoustic signals for I determine the speed of sound.
- Forced excitation of acoustic vibrations in the pipeline is carried out using an acoustic pulse generator connected to means for generating acoustic signals by mechanical shock on the surface of the pipeline.
- Forced excitation of acoustic vibrations in the pipeline is carried out using an acoustic pulse generator connected to means for generating acoustic signals by creating an acoustic signal by a piezo emitter and transmitting the signal through a waveguide to the surface of the pipeline.
- the device for determining the location of the leak in the pipeline for the implementation of the above method contains an acoustic pulse generator, first and second receiving paths, each of which contains an acoustic sensor, amplifier, filter, signal transmission means, signal receiving means and an analog-to-digital converter (ADC) connected to the processing unit to which the indicator is connected, while the acoustic generator pulse signals connected to the means of generating acoustic signals installed on the pipeline and creating acoustic vibrations in the pipeline, while the first and second acoustic sensors located on the pipeline are spaced apart by a predetermined the distance along its length is acoustically connected by means of a pipeline with a means of creating acoustic signals.
- ADC analog-to-digital converter
- a mechanical percussion device driven by a solenoid As a means of creating acoustic signals, a mechanical percussion device driven by a solenoid is used.
- a piezoelectric emitter acoustically connected to the pipeline is used as a means of creating acoustic signals.
- the means for creating acoustic signals is located in one housing with the first acoustic sensor.
- Means for transmitting and receiving a signal are made as a radio transmitter and receiver of a radio signal.
- Means of signal transmission and reception are made in the form of a wired connection.
- the acoustic pulse generator is provided with a pulse time synchronization means connected to the processing unit.
- Means for synchronizing the time of the pulse connected to the processing unit using wired communication.
- Means for synchronizing the time of the pulse connected to the processing unit via a radio channel.
- FIG. 1 Block diagram of the device
- the device for determining the location of the leak in the pipeline for implementation contains a generator (10) of acoustic pulse signals, the first and second receiving paths, each of which contains a series-connected acoustic sensor (1, 2), amplifier (3), filter (4), means ( 5) signal transmission, signal receiving means (6) and an analog-to-digital converter (7) connected to the processing unit (8) to which the indicator (9) is connected, while the generator (10) of acoustic pulse signals is connected to the means (1) 1) create acoustic si channels installed on the pipeline and creating acoustic vibrations in the pipeline, while the first (1) and second (2) acoustic sensors located on the pipeline are spaced a predetermined distance along its length, are acoustically connected by means of the pipeline to the means (1 1) of creating acoustic signals.
- a mechanical shock device is used driven by a solenoid.
- a piezoelectric emitter acoustically connected to the pipeline is used.
- the acoustic signal generating means (1 1) is located in the same housing as the first (1) acoustic sensor.
- Means of transmission (5) and reception (6) of the signal are made as a radio transmitter and receiver of the radio signal.
- Means of transmission (5) and reception (6) of the signal are made in the form of a wired connection.
- the generator (10) of acoustic pulse signals is equipped with means for synchronizing the time of the pulse connected to the processing unit.
- Means for synchronizing the time of the pulse connected to the processing unit using wired communication.
- Means for synchronizing the time of the pulse connected to the processing unit via a radio channel.
- means (1 1) for generating an acoustic signal, first (1) and second (2) acoustic sensors are fixed along the length of the pipeline, while means (1 1) for creating an acoustic signal are fixed to the pipeline at a predetermined distance mn (up to 1 km) from the first (1) - near acoustic sensor, and the first (1) and second (2) acoustic sensors are also fixed on the pipeline at a given distance n 2 (up to 1 km).
- the acoustic pulse generator (10) is connected to the acoustic signal generating means (11) made in the form of a mechanical shock device or a piezoelectric emitter.
- the generator (10) of acoustic pulse signals generates a voltage or current pulse, which is supplied to the means (1 1) for creating an acoustic signal and after converting the signal into it, means (11) for creating an acoustic signal are acoustically connected to the pipeline.
- the generator (10) of acoustic pulse signals contains means for synchronizing the time of the pulse, which records the start time of the creation of the acoustic signal and transfers it to the processing unit (8).
- the acoustic signal generating means (11) acoustically creates an acoustic signal in the pipeline, which, propagating through the pipeline, is detected by the first acoustic sensor (1), amplified in the amplifier (3), filtered by the filter (4), and transmitted using the signal transmission means (5) to the signal receiving means (6), the ADC is digitized (7), and enters the processing unit (8).
- the average group velocity (Vrp) of the signal propagation is calculated based on the delay time of the acoustic signal propagation between the sensors (t2) and the known distance between the sensors (h2) according to the formula:
- Vrp h2 ⁇ t2
- the forced excitation of acoustic vibrations in the pipeline is stopped, while the first (1) and second (2) acoustic sensors detect acoustic continuous signals from a leak, the received signals are amplified in an amplifier (3), filtered by a filter (4), and using transmission means of the signal (5) are transmitted to the signal receiving means (6), the ADCs are digitized (7), and fed to the processing unit (8).
- the processing unit (8) correlation processing of the processed continuous signals is carried out, with the detection of signals from the leak. Based on the correlation processing, the delay time of the signal from the leak to the first (1) and second (2) acoustic sensors is determined. Based on the delay time of the signal from the leak to the first (1) and second (2) acoustic sensors and the average group speed, the processing unit calculates the distance to the leak from one of the sensors. The calculated data are displayed on the indicator (9).
- the use of two acoustic sensors (1, 2) located at a given distance from each other along the length of the pipeline and means (1 1) for creating an acoustic signal located at a given distance from the first (1) - near acoustic sensor allows to increase the accuracy and reliability of determining the location finding leaks in the pipeline, due to the location of the means (1 1) for creating an acoustic signal from the first (1) - nearest acoustic sensor at a greater distance than in the closest analogue, since in the closest
- the source of generating acoustic vibrations can be installed no more than 10 m from the acoustic sensor, since the acoustic signal in the soil decays quickly and it is difficult to accurately determine the average group velocity of the signal, therefore, the proposed group EFFECT: invention makes it possible to more accurately determine the average group velocity of a signal, therefore, to increase the accuracy and reliability of determining the location of a leak in a pipeline.
- acoustic signal generating means (11) are fixed along the pipe length
- the first (1) and second (2) acoustic sensors while acoustic signal generating means (11) are fixed to the pipeline at an unknown distance mn ( up to 1 km) from the first (1) - near acoustic sensor, and the first (1) and second (2) acoustic sensors are also fixed on the pipeline at a given distance n 2 (up to 1 km).
- the operation of the device is carried out similarly to the first embodiment of the invention, for except that the average group signal propagation speed is determined based on the acoustic signal transit time between the first (1) and second (2) acoustic sensors, and the acoustic pulse generator (10) does not include a pulse time synchronization means.
- the proposed group of the invention improves the accuracy and reliability of determining the location of a leak in the pipeline.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
Ce groupe d'inventions concerne un procédé et un dispositif pour déterminer l'emplacement d'une fuite de liquide ou de gaz dans des conduits, et a pour but de déterminer les coordonnées de la fuite dans les endroits difficilement accessibles de conduits, comme des gazoducs ou des oléoducs. Le résultat technique de ce groupe d'inventions consiste en une meilleure précision et fiabilité de détermination de l'emplacement de la fuite dans le conduit. Le procédé de détermination d'un emplacement de fuite dans un conduit comprend les étapes suivantes: excitation forcée d'oscillations acoustiques dans le conduit sur lequel sont fixés deux capteurs disposés à une distance donnée l'un de l'autre sur la longueur du tube; réception de signaux d'impulsions acoustiques par les premier et second capteurs acoustiques avec fixation du temps d'arrivée des signaux d'impulsions acoustiques sur le premier capteur acoustique plus proche, puis sur le second capteur acoustique; détermination de la vitesse de groupe moyenne du son de propagation du signal acoustique dans le conduit en fonction des données de passage des signaux d'impulsions acoustiques depuis le moyen de génération de signaux acoustiques au moins jusqu'à un capteur acoustique; réception du signal acoustique depuis la fuite par les premier et second capteurs acoustiques avec traitement du signal reçu et détermination du temps de retard d'arrivée du signal sur les capteurs depuis la fuite; détermination de la distance jusqu'à la fuite dans le conduit depuis l'un des capteurs en fonction du temps de retard d'arrivée du signal sur les capteurs depuis la fuite et la vitesse de groupe moyenne du son dans le conduit qui ont été déterminés.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2016132866A RU2620023C1 (ru) | 2016-08-09 | 2016-08-09 | Способ определения места течи в трубопроводе и устройство для его осуществления |
| RU2016132866 | 2016-08-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2018030919A1 true WO2018030919A1 (fr) | 2018-02-15 |
Family
ID=58881204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/RU2017/050066 Ceased WO2018030919A1 (fr) | 2016-08-09 | 2017-08-01 | Procédé de détermination d'un emplacement de fuite dans un conduit et procédé de mise en œuvre |
Country Status (2)
| Country | Link |
|---|---|
| RU (1) | RU2620023C1 (fr) |
| WO (1) | WO2018030919A1 (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857699A (zh) * | 2021-01-03 | 2021-05-28 | 陕西理工大学 | 一种声矢量传感器的长输油气管道泄漏检测和定位方法 |
| CN116242555A (zh) * | 2023-03-13 | 2023-06-09 | 爱德森（厦门）电子有限公司 | 一种无线式声脉冲管道快速检漏传感器装置及其检测方法 |
| US20240053220A1 (en) * | 2021-01-08 | 2024-02-15 | Daikin Industries, Ltd. | Defect location estimation system, method of estimating defect location, and non-transitory storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2249802C2 (ru) * | 2002-01-25 | 2005-04-10 | Федеральное государственное унитарное предприятие "Центральный научно-исследовательский институт "Морфизприбор" | Способ определения места течи в трубопроводе и устройство для его реализации |
| WO2011130366A2 (fr) * | 2010-04-15 | 2011-10-20 | Acoustic Systems, Inc. | Système intégré de détection de fuites acoustiques utilisant des capteurs intrusifs et non intrusifs |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4083229B2 (en) * | 1976-09-28 | 1984-09-11 | Method and apparatus for detecting and locating fluid leaks | |
| SU1715212A3 (ru) * | 1989-07-22 | 1992-02-23 | Astafev Vladimir A | Способ вы влени и определени местоположени утечки в трубопроводах |
| EP0552044B1 (fr) * | 1992-01-16 | 1996-10-09 | Kabushiki Kaisha Toshiba | Procédé et appareil de détection de la position d'un site anormal d'une conduite enterrée |
| US7328618B2 (en) * | 2005-06-21 | 2008-02-12 | National Research Council Of Canada | Non-destructive testing of pipes |
| US7810378B2 (en) * | 2007-06-21 | 2010-10-12 | National Research Council Of Canada | Monitoring of leakage in wastewater force mains and other pipes carrying fluid under pressure |
| CA2766850C (fr) * | 2010-06-16 | 2020-08-11 | Mueller International, Llc | Dispositifs, systemes et procedes de surveillance d'infrastructure |
| GB2519142B (en) * | 2013-10-11 | 2016-09-28 | Univ Manchester | Signal processing system and method |
| US10560764B2 (en) * | 2014-05-30 | 2020-02-11 | Aquarius Spectrum Ltd. | System, method, and apparatus for synchronizing sensors for signal detection |
-
2016
- 2016-08-09 RU RU2016132866A patent/RU2620023C1/ru active
-
2017
- 2017-08-01 WO PCT/RU2017/050066 patent/WO2018030919A1/fr not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2249802C2 (ru) * | 2002-01-25 | 2005-04-10 | Федеральное государственное унитарное предприятие "Центральный научно-исследовательский институт "Морфизприбор" | Способ определения места течи в трубопроводе и устройство для его реализации |
| WO2011130366A2 (fr) * | 2010-04-15 | 2011-10-20 | Acoustic Systems, Inc. | Système intégré de détection de fuites acoustiques utilisant des capteurs intrusifs et non intrusifs |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857699A (zh) * | 2021-01-03 | 2021-05-28 | 陕西理工大学 | 一种声矢量传感器的长输油气管道泄漏检测和定位方法 |
| CN112857699B (zh) * | 2021-01-03 | 2023-09-29 | 西安金时利和自动化工程有限公司 | 一种声矢量传感器的长输油气管道泄漏检测和定位方法 |
| US20240053220A1 (en) * | 2021-01-08 | 2024-02-15 | Daikin Industries, Ltd. | Defect location estimation system, method of estimating defect location, and non-transitory storage medium |
| CN116242555A (zh) * | 2023-03-13 | 2023-06-09 | 爱德森（厦门）电子有限公司 | 一种无线式声脉冲管道快速检漏传感器装置及其检测方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2620023C1 (ru) | 2017-05-22 |
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