CN113154269A - Pipeline liquid leakage monitoring, alarming and positioning system and method - Google Patents
Pipeline liquid leakage monitoring, alarming and positioning system and method Download PDFInfo
- Publication number
- CN113154269A CN113154269A CN202110293549.4A CN202110293549A CN113154269A CN 113154269 A CN113154269 A CN 113154269A CN 202110293549 A CN202110293549 A CN 202110293549A CN 113154269 A CN113154269 A CN 113154269A
- Authority
- CN
- China
- Prior art keywords
- liquid leakage
- leakage
- liquid
- pipeline
- remote monitoring
- 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.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 205
- 238000012544 monitoring process Methods 0.000 title claims abstract description 90
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 46
- 238000012545 processing Methods 0.000 claims description 18
- 238000010219 correlation analysis Methods 0.000 claims description 4
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- 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 invention relates to a pipeline liquid leakage monitoring, alarming and positioning system and a method, wherein the system comprises a leakage monitoring system, a leakage positioning system, a wireless communication module and a remote monitoring end, wherein a flowmeter arranged at the joint of pipe sections monitors the flow rate of liquid at the joint of the pipe sections, when the remote monitoring end judges that the flow rate difference of the liquid at the joint of two adjacent pipe sections is greater than or equal to a flow rate difference threshold value, the leakage pipe section is determined, the leakage positioning system is controlled to move to the position of the leakage pipe section to receive liquid leakage sound waves and convert the liquid leakage sound waves into liquid leakage sound wave digital electric signals, and finally, a liquid leakage point is positioned according to the liquid leakage sound wave digital electric signals, and an alarm is sent out at the same time. The invention utilizes a wireless transmission mode to remotely monitor the liquid conveying condition of the pipeline in real time, discover liquid leakage in time, accurately position a liquid leakage point, and simultaneously send out an alarm signal to remind maintenance personnel to overhaul the pipeline, thereby reducing the loss caused by liquid leakage.
Description
Technical Field
The invention relates to the technical field of pipeline liquid monitoring, in particular to a pipeline liquid leakage monitoring, positioning and alarming system and method.
Background
Pipeline transportation is one of five major transportation industries of railway, highway, aviation, water transportation and driving. When a pipeline is used for conveying liquid, the pipeline can be aged, bent, leaked or leaked to different degrees, in the prior art, the pipeline is usually detected or maintained by adopting a method of manual periodic detection, but sudden and unpredictable pipeline leakage cannot be solved, so that liquid loss and economic loss are caused.
Disclosure of Invention
The invention aims to provide a system and a method for monitoring, alarming and positioning pipeline liquid leakage so as to timely and accurately monitor, alarm and position the pipeline liquid leakage.
In order to achieve the purpose, the invention provides the following scheme:
a pipeline liquid leakage monitoring alarm positioning system, the system comprising: the system comprises a leakage monitoring system, a leakage positioning system, a wireless communication module and a remote monitoring end;
the leak monitoring system includes a plurality of flow meters; the plurality of flow meters are respectively arranged at the joints of the plurality of pipe sections in a one-to-one correspondence manner; the leakage positioning system is arranged on the outer wall of the pipeline and can move along the outer wall of the pipeline;
the signal output ends of the plurality of flowmeters are connected with the remote monitoring end through the wireless communication module, and the plurality of flowmeters are used for monitoring the flow of liquid at the joints of the plurality of pipe sections and transmitting the monitored flow of the liquid at the joints of the plurality of pipe sections to the remote monitoring end;
the remote monitoring end is connected with the leakage positioning system through the wireless communication module, and is used for determining a leakage pipe section when the flow difference of liquid at the joint of two adjacent pipe sections is greater than or equal to a flow difference threshold value, and sending a moving instruction to the leakage positioning system through the wireless communication module to control the leakage positioning system to move to the position of the leakage pipe section;
the leakage positioning system is used for receiving liquid leakage sound waves at the position of a leakage pipe section, converting the liquid leakage sound waves into liquid leakage sound wave digital electric signals and transmitting the liquid leakage sound wave digital electric signals to the remote monitoring end through the wireless communication module;
the remote monitoring end is also used for positioning a liquid leakage point according to the liquid leakage sound wave digital electric signal and sending an alarm.
Optionally, the leak localization system includes: a first leak locator and a second leak locator;
the first leakage positioning device is arranged on the outer wall of one end of the pipeline, and the second leakage positioning device is arranged on the outer wall of the other end of the pipeline;
the first leakage positioning device and the second leakage positioning device are respectively connected with the remote monitoring end through the wireless communication module;
the first leakage positioning device is used for moving to one end of the leakage pipe section under the control of the remote monitoring end according to a moving instruction, receiving liquid leakage sound waves, obtaining first liquid leakage sound waves, converting the first liquid leakage sound waves into first liquid leakage sound wave digital electric signals, and transmitting the first liquid leakage sound wave digital electric signals to the remote monitoring end through a wireless communication module;
the second leakage positioning device is used for moving to the other end of the leakage pipe section under the control of the remote monitoring end according to a moving instruction, receiving liquid leakage sound waves, obtaining second liquid leakage sound waves, converting the second liquid leakage sound waves into second liquid leakage sound wave digital electric signals, and transmitting the second liquid leakage sound wave digital electric signals to the remote monitoring end through the wireless communication module.
Optionally, the first leak locator includes: the system comprises an infrasonic wave sensor, a main control chip, a data processing unit and a driving device;
the infrasonic wave sensor and the main control chip are both arranged on the driving device;
the main control chip is connected with the remote monitoring terminal through the wireless communication module and is used for receiving a movement instruction sent by the remote monitoring terminal;
the driving device is connected with the main control chip and used for moving to one end of the leakage pipe section according to the movement instruction received by the main control chip;
the infrasonic wave sensor is connected with the data processing unit and used for receiving the liquid leakage sound waves, obtaining first liquid leakage sound waves and transmitting the first liquid leakage sound waves to the data processing unit;
the data processing unit is connected with the remote monitoring end through the wireless communication module and used for converting the first liquid leakage sound wave into a first liquid leakage sound wave digital electric signal and transmitting the first liquid leakage sound wave digital electric signal to the remote monitoring end through the wireless communication module.
Optionally, the first leak locator further comprises: a GPS unit;
the GPS unit is connected with the data processing unit and is used for providing standard time signals for the data processing unit;
the GPS unit is further used for sending the position of the first leakage positioning device to the remote monitoring end through the wireless communication system.
Optionally, the wireless communication module is an LoRa communication module or a Zigbee communication module.
Optionally, the remote monitoring terminal is a computer, a tablet or a mobile phone.
A method for monitoring, alarming and positioning pipeline liquid leakage is applied to a system for monitoring, alarming and positioning pipeline liquid leakage, and comprises the following steps:
acquiring the flow of liquid at the joint of the plurality of pipe sections;
acquiring the flow difference of liquid at the joint of two adjacent pipe sections, and judging whether the flow difference of the liquid at the joint of the two adjacent pipe sections is greater than or equal to a flow difference threshold value or not;
if the flow difference of the liquid at the joint of the two adjacent pipe sections is greater than or equal to the flow difference threshold value, determining the pipe section between the joints of the two adjacent pipe sections with the flow difference greater than or equal to the flow difference threshold value as a leakage pipe section;
controlling a leak locator system to move to a location of the leaking pipe section;
obtaining a liquid leakage acoustic digital electrical signal at the location of the leaking pipe section;
and positioning the liquid leakage point according to the liquid leakage sound wave digital electric signal and giving an alarm.
Optionally, the obtaining of the liquid leakage acoustic wave digital electrical signal at the position of the leaking pipe section specifically includes:
a first secondary acoustic wave sensor in the leakage positioning system receives liquid leakage acoustic waves to obtain first liquid leakage acoustic waves, and a second secondary acoustic wave sensor in the leakage positioning system receives the liquid leakage acoustic waves to obtain second liquid leakage acoustic waves;
and converting the first liquid leakage acoustic wave into a first liquid leakage acoustic wave digital electric signal, and converting the second liquid leakage acoustic wave into a second liquid leakage acoustic wave digital electric signal.
Optionally, the positioning of the liquid leakage point according to the liquid leakage acoustic wave digital electrical signal specifically includes:
determining the time difference between the first liquid leakage acoustic wave digital electric signal and the second liquid leakage acoustic wave digital electric signal according to the first liquid leakage acoustic wave digital electric signal and the second liquid leakage acoustic wave digital electric signal by using a cross-correlation analysis method, and determining an infrasonic sensor with earlier liquid leakage ultrasonic wave receiving time as a reference infrasonic sensor;
utilizing a formula based on the time difference and the distance between the first and second sub-acoustic wave sensors
Determining the distance between the reference infrasonic wave sensor and a liquid leakage point; wherein, L is the distance between the reference infrasonic wave sensor and the liquid leakage point, L' is the distance between the first infrasonic wave sensor and the second infrasonic wave sensor, v is the propagation velocity of infrasonic waves generated by pipeline leakage, and delta t is the time difference;
and obtaining the position of the liquid leakage point according to the distance and the position of the reference infrasonic wave sensor.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a system and a method for monitoring, alarming and positioning liquid leakage of a pipeline, wherein a flowmeter arranged at a joint of pipe sections monitors the flow of liquid at the joint of the pipe sections, when a remote monitoring end judges that the flow difference of the liquid at the joint of two adjacent pipe sections is greater than or equal to a flow difference threshold value, the leaking pipe section is determined, the leakage positioning system is controlled to move to the position of the leaking pipe section to receive liquid leakage sound waves and convert the liquid leakage sound waves into liquid leakage sound wave digital electric signals, finally, a liquid leakage point is positioned according to the liquid leakage sound wave digital electric signals, and meanwhile, an alarm is sent out. The invention remotely monitors the liquid conveying condition of the pipeline in real time in a wireless transmission mode, finds liquid leakage in time, accurately positions the liquid leakage point, sends out an alarm signal at the same time, reminds maintenance personnel to overhaul the pipeline and reduces the loss caused by liquid leakage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a simplified structural diagram of a piping fluid leakage monitoring alarm positioning system provided by the present invention;
FIG. 2 is a flow chart of a method for monitoring, alarming and positioning leakage of pipeline fluid according to the present invention;
description of the symbols: 1-flowmeter, 2-first acoustic sensor, 3-second acoustic sensor, 4-leakage pipe section.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a system and a method for monitoring, alarming and positioning pipeline liquid leakage so as to timely and accurately monitor, alarm and position the pipeline liquid leakage.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
A system for monitoring, alarming and positioning leakage of liquid in a pipeline, as shown in fig. 1, the system comprising: the system comprises a leakage monitoring system, a leakage positioning system, a wireless communication module and a remote monitoring terminal.
The leak monitoring system comprises a plurality of flow meters 1. The plurality of flowmeters 1 are respectively arranged at the plurality of pipe section joints in one-to-one correspondence. The leak locator system is disposed on and movable along the outer wall of the pipe.
The signal output ends of the flowmeters 1 are connected with the remote monitoring end through the wireless communication module, the flowmeters 1 are used for monitoring the flow of liquid at the joints of the pipe sections, and the monitored flow of the liquid at the joints of the pipe sections is transmitted to the remote monitoring end.
The remote monitoring end is connected with the leakage positioning system through the wireless communication module, and is used for determining the leakage pipe section 4 when the flow difference of liquid at the joint of two adjacent pipe sections is larger than or equal to the flow difference threshold value, and sending a moving instruction to the leakage positioning system through the wireless communication module to control the leakage positioning system to move to the position of the leakage pipe section 4.
The leakage positioning system is used for receiving the liquid leakage sound waves at the position of the leakage pipe section 4, converting the liquid leakage sound waves into liquid leakage sound wave digital electric signals and transmitting the liquid leakage sound wave digital electric signals to the remote monitoring end through the wireless communication module.
The remote monitoring terminal is also used for positioning a liquid leakage point (such as a point S in figure 1) according to the liquid leakage sound wave digital electric signal and sending an alarm.
Wherein, leak positioning system includes: a first leak locator and a second leak locator. The first leakage positioning device is arranged on the outer wall of one end of the pipeline, and the second leakage positioning device is arranged on the outer wall of the other end of the pipeline. The first leakage positioning device and the second leakage positioning device are respectively connected with the remote monitoring end through the wireless communication module.
The first leakage positioning device is used for moving to one end of the leakage pipe section 4 under the control of the remote monitoring end according to the moving instruction, receiving the liquid leakage sound wave, obtaining a first liquid leakage sound wave, converting the first liquid leakage sound wave into a first liquid leakage sound wave digital electric signal, and transmitting the first liquid leakage sound wave digital electric signal to the remote monitoring end through the wireless communication module.
The second leakage positioning device is used for moving to the other end of the leakage pipe section 4 under the control of the remote monitoring end according to the moving instruction, receiving the liquid leakage sound wave, obtaining a second liquid leakage sound wave, converting the second liquid leakage sound wave into a second liquid leakage sound wave digital electric signal, and transmitting the second liquid leakage sound wave digital electric signal to the remote monitoring end through the wireless communication module.
The first leak locator includes: the system comprises an infrasonic wave sensor, a main control chip, a data processing unit and a driving device.
The infrasonic wave sensor and the main control chip are both arranged on the driving device.
The main control chip is connected with the remote monitoring end through the wireless communication module and used for receiving a moving instruction sent by the remote monitoring end.
The driving device is connected with the main control chip and is used for moving to one end of the leakage pipe section 4 according to the movement instruction received by the main control chip.
The infrasonic wave sensor is connected with the data processing unit and used for receiving the liquid leakage sound waves, obtaining first liquid leakage sound waves and transmitting the first liquid leakage sound waves to the data processing unit.
The data processing unit is connected with the remote monitoring end through the wireless communication module and used for converting the first liquid leakage sound waves into first liquid leakage sound wave digital electric signals and transmitting the first liquid leakage sound wave digital electric signals to the remote monitoring end through the wireless communication module.
The first leak locator further includes: and a GPS unit. The GPS unit is connected with the data processing unit and is used for providing standard time signals for the data processing unit. The GPS unit is also used for transmitting the position of the first leakage positioning device to the remote monitoring end through the wireless communication system.
The second leak locator has the same composition as the first leak locator.
The working principle of the first leakage positioning device and the second leakage positioning device is as follows: when a pipeline leaks, pressure difference is generated between the inside and the outside of the pipeline, so that vortex is formed at the leakage point, and sound waves are formed. Leakage continues after it occurs, and the resulting acoustic signal is a continuous signal, typically having a broad frequency spectrum, that contains rich information about the pipe leakage, such as the location, strength, etc. of the leak. Elastic waves excited by the pipeline leakage point are transmitted to the secondary ultrasonic sensor through the medium, the leakage of the pipeline can be determined by comparing the elastic waves with data stored in a database when the medium is normally conveyed, and meanwhile, the specific position of the leakage point is calculated by using the time difference calibrated by the GPS.
Preferably, the wireless communication module is a LoRa communication module or a Zigbee communication module.
Preferably, the remote monitoring terminal is a computer, a tablet or a mobile phone.
The invention also provides a method for monitoring, alarming and positioning the liquid leakage of the pipeline, which is applied to a system for monitoring, alarming and positioning the liquid leakage of the pipeline as shown in figure 2, and the method comprises the following steps:
s101, obtaining the flow of liquid at the joint of the plurality of pipe sections.
S102, obtaining the flow difference of the liquid at the joint of the two adjacent pipe sections, and judging whether the flow difference of the liquid at the joint of the two adjacent pipe sections is larger than or equal to a flow difference threshold value.
S103, if the flow difference of the liquid at the joint of the two adjacent pipe sections is greater than or equal to the flow difference threshold value, determining the pipe section between the two adjacent pipe section joints with the flow difference greater than or equal to the flow difference threshold value as the leakage pipe section 4.
And S104, controlling the leakage positioning system to move to the position of the leakage pipe section 4.
S105, acquiring the liquid leakage acoustic wave digital electric signal at the position of the leakage pipe section 4, specifically comprising:
the first sub-acoustic wave sensor 2 (located at point a in fig. 1) in the leak locating system receives the liquid leak acoustic wave to obtain a first liquid leak acoustic wave, while the second sub-acoustic wave sensor 3 (located at point B in fig. 1) in the leak locating system receives the liquid leak acoustic wave to obtain a second liquid leak acoustic wave.
The first liquid leakage acoustic wave is converted into a first liquid leakage acoustic wave digital electrical signal, and the second liquid leakage acoustic wave is converted into a second liquid leakage acoustic wave digital electrical signal.
S106, positioning a liquid leakage point according to the liquid leakage sound wave digital electric signal, and giving an alarm, and specifically comprises the following steps:
and determining the time difference between the first liquid leakage acoustic wave digital electric signal and the second liquid leakage acoustic wave digital electric signal by using a cross-correlation analysis method according to the first liquid leakage acoustic wave digital electric signal and the second liquid leakage acoustic wave digital electric signal, and determining the infrasonic sensor which receives the liquid leakage ultrasonic wave earlier as a reference infrasonic sensor (for example, a second infrasonic sensor 3 positioned at a point B in the graph 1).
According to the time difference and the distance between the first secondary acoustic wave sensor 2 and the second secondary acoustic wave sensor 3, using a formula
And determining the distance between the reference infrasonic wave sensor and the liquid leakage point. Wherein, L is the distance between the reference infrasonic wave sensor and the liquid leakage point, L' is the distance between the first infrasonic wave sensor 2 and the second infrasonic wave sensor 3, v is the propagation velocity of infrasonic waves generated by pipeline leakage, and Δ t is the time difference.
And obtaining the position of the liquid leakage point according to the distance and the position of the reference infrasonic wave sensor.
The cross-correlation analysis is an important method for describing signal characteristics in a time domain, and the time difference between two signals can be obtained by performing correlation operation on the waveforms of two leakage sound signals with similar characters received by two sensors.
The invention utilizes the two infrasonic wave sensors to position the liquid leakage points, the two infrasonic wave sensors are positioned at the two ends of the pipeline when not working, when the leakage is possible, the pipeline is detected by going to the two ends of the pipeline section which is possible to leak, and the quantity of the infrasonic wave sensors is reduced while the detection result of the leakage points is not influenced.
The invention utilizes a wireless transmission mode to remotely monitor the liquid conveying condition of the pipeline in real time, can find liquid leakage in time and accurately position a liquid leakage point, and simultaneously sends out an alarm signal to remind maintenance personnel to overhaul the pipeline, thereby reducing the loss caused by liquid leakage.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (9)
1. A system for monitoring, alarming and positioning liquid leakage of a pipeline, the system comprising: the system comprises a leakage monitoring system, a leakage positioning system, a wireless communication module and a remote monitoring end;
the leak monitoring system includes a plurality of flow meters; the plurality of flow meters are respectively arranged at the joints of the plurality of pipe sections in a one-to-one correspondence manner; the leakage positioning system is arranged on the outer wall of the pipeline and can move along the outer wall of the pipeline;
the signal output ends of the plurality of flowmeters are connected with the remote monitoring end through the wireless communication module, and the plurality of flowmeters are used for monitoring the flow of liquid at the joints of the plurality of pipe sections and transmitting the monitored flow of the liquid at the joints of the plurality of pipe sections to the remote monitoring end;
the remote monitoring end is connected with the leakage positioning system through the wireless communication module, and is used for determining a leakage pipe section when the flow difference of liquid at the joint of two adjacent pipe sections is greater than or equal to a flow difference threshold value, and sending a moving instruction to the leakage positioning system through the wireless communication module to control the leakage positioning system to move to the position of the leakage pipe section;
the leakage positioning system is used for receiving liquid leakage sound waves at the position of a leakage pipe section, converting the liquid leakage sound waves into liquid leakage sound wave digital electric signals and transmitting the liquid leakage sound wave digital electric signals to the remote monitoring end through the wireless communication module;
the remote monitoring end is also used for positioning a liquid leakage point according to the liquid leakage sound wave digital electric signal and sending an alarm.
2. The pipeline liquid leakage monitoring, alarm and location system of claim 1, wherein the leakage location system comprises: a first leak locator and a second leak locator;
the first leakage positioning device is arranged on the outer wall of one end of the pipeline, and the second leakage positioning device is arranged on the outer wall of the other end of the pipeline;
the first leakage positioning device and the second leakage positioning device are respectively connected with the remote monitoring end through the wireless communication module;
the first leakage positioning device is used for moving to one end of the leakage pipe section under the control of the remote monitoring end according to a moving instruction, receiving liquid leakage sound waves, obtaining first liquid leakage sound waves, converting the first liquid leakage sound waves into first liquid leakage sound wave digital electric signals, and transmitting the first liquid leakage sound wave digital electric signals to the remote monitoring end through a wireless communication module;
the second leakage positioning device is used for moving to the other end of the leakage pipe section under the control of the remote monitoring end according to a moving instruction, receiving liquid leakage sound waves, obtaining second liquid leakage sound waves, converting the second liquid leakage sound waves into second liquid leakage sound wave digital electric signals, and transmitting the second liquid leakage sound wave digital electric signals to the remote monitoring end through the wireless communication module.
3. The pipeline liquid leakage monitoring, alarm and locating system of claim 2, wherein said first leakage locating means comprises: the system comprises an infrasonic wave sensor, a main control chip, a data processing unit and a driving device;
the infrasonic wave sensor and the main control chip are both arranged on the driving device,
the main control chip is connected with the remote monitoring terminal through the wireless communication module and is used for receiving a movement instruction sent by the remote monitoring terminal;
the driving device is connected with the main control chip and used for moving to one end of the leakage pipe section according to the movement instruction received by the main control chip;
the infrasonic wave sensor is connected with the data processing unit and used for receiving the liquid leakage sound waves, obtaining first liquid leakage sound waves and transmitting the first liquid leakage sound waves to the data processing unit;
the data processing unit is connected with the remote monitoring end through the wireless communication module and used for converting the first liquid leakage sound wave into a first liquid leakage sound wave digital electric signal and transmitting the first liquid leakage sound wave digital electric signal to the remote monitoring end through the wireless communication module.
4. The pipe liquid leakage monitoring, alarm and locating system of claim 3, wherein said first leakage locating means further comprises: a GPS unit;
the GPS unit is connected with the data processing unit and is used for providing standard time signals for the data processing unit;
the GPS unit is further used for sending the position of the first leakage positioning device to the remote monitoring end through the wireless communication system.
5. The pipe liquid leakage monitoring, alarming and positioning system of claim 1, wherein the wireless communication module is a LoRa communication module or a Zigbee communication module.
6. The system for monitoring, alarming and positioning pipeline liquid leakage according to claim 1, wherein the remote monitoring end is a computer, a tablet or a mobile phone.
7. A method for monitoring, alarming and positioning pipeline liquid leakage is applied to the system for monitoring, alarming and positioning pipeline liquid leakage according to any one of claims 1-6, and comprises the following steps:
acquiring the flow of liquid at the joint of the plurality of pipe sections;
acquiring the flow difference of liquid at the joint of two adjacent pipe sections, and judging whether the flow difference of the liquid at the joint of the two adjacent pipe sections is greater than or equal to a flow difference threshold value or not;
if the flow difference of the liquid at the joint of the two adjacent pipe sections is greater than or equal to the flow difference threshold value, determining the pipe section between the joints of the two adjacent pipe sections with the flow difference greater than or equal to the flow difference threshold value as a leakage pipe section;
controlling a leak locator system to move to a location of the leaking pipe section;
obtaining a liquid leakage acoustic digital electrical signal at the location of the leaking pipe section;
and positioning the liquid leakage point according to the liquid leakage sound wave digital electric signal and giving an alarm.
8. The method for monitoring, alarming and positioning the liquid leakage of the pipeline according to claim 7, wherein the obtaining of the acoustic digital electrical signal of the liquid leakage at the position of the leaking pipe section specifically comprises:
a first secondary acoustic wave sensor in the leakage positioning system receives liquid leakage acoustic waves to obtain first liquid leakage acoustic waves, and a second secondary acoustic wave sensor in the leakage positioning system receives the liquid leakage acoustic waves to obtain second liquid leakage acoustic waves;
and converting the first liquid leakage acoustic wave into a first liquid leakage acoustic wave digital electric signal, and converting the second liquid leakage acoustic wave into a second liquid leakage acoustic wave digital electric signal.
9. The method for monitoring, alarming and positioning the liquid leakage of the pipeline according to claim 8, wherein the positioning of the liquid leakage point according to the liquid leakage acoustic wave digital electric signal specifically comprises:
determining the time difference between the first liquid leakage acoustic wave digital electric signal and the second liquid leakage acoustic wave digital electric signal according to the first liquid leakage acoustic wave digital electric signal and the second liquid leakage acoustic wave digital electric signal by using a cross-correlation analysis method, and determining an infrasonic sensor with earlier liquid leakage ultrasonic wave receiving time as a reference infrasonic sensor;
utilizing a formula based on the time difference and the distance between the first and second sub-acoustic wave sensors
Determining the distance between the reference infrasonic wave sensor and a liquid leakage point; wherein, L is the distance between the reference infrasonic wave sensor and the liquid leakage point, L' is the distance between the first infrasonic wave sensor and the second infrasonic wave sensor, v is the propagation velocity of infrasonic waves generated by pipeline leakage, and delta t is the time difference;
and obtaining the position of the liquid leakage point according to the distance and the position of the reference infrasonic wave sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110293549.4A CN113154269A (en) | 2021-03-18 | 2021-03-18 | Pipeline liquid leakage monitoring, alarming and positioning system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110293549.4A CN113154269A (en) | 2021-03-18 | 2021-03-18 | Pipeline liquid leakage monitoring, alarming and positioning system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113154269A true CN113154269A (en) | 2021-07-23 |
Family
ID=76888102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110293549.4A Pending CN113154269A (en) | 2021-03-18 | 2021-03-18 | Pipeline liquid leakage monitoring, alarming and positioning system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113154269A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438359A (en) * | 2013-08-06 | 2013-12-11 | 毛振刚 | Oil pipeline leakage detection and positioning system |
| CN103939749A (en) * | 2014-04-28 | 2014-07-23 | 东北大学 | Oil pipeline network leakage intelligent self-adaptation monitoring system and method based on big data |
| CN105042339A (en) * | 2015-06-03 | 2015-11-11 | 中国石化销售有限公司华东分公司 | Leakage rate estimation system and method for product oil pipelines based on zero dimension |
| CN105156905A (en) * | 2015-07-09 | 2015-12-16 | 南京声宏毅霆网络科技有限公司 | Leakage monitoring system, method and device for pipeline and server |
| CN107940246A (en) * | 2017-03-15 | 2018-04-20 | 吉林省百瑞生科技发展有限公司 | A kind of fluid line source of leaks monitoring and positioning system and method |
| CN110748738A (en) * | 2019-11-29 | 2020-02-04 | 河南理工大学 | Novel shallow buried underground leakage-proof pipeline and working method thereof |
| CN110925605A (en) * | 2019-12-12 | 2020-03-27 | 上海邦芯物联网科技有限公司 | Intelligent alarm system and method for leakage of underground water pipe |
| CN111022938A (en) * | 2019-12-12 | 2020-04-17 | 上海邦芯物联网科技有限公司 | System for accurately positioning water leakage point of underground water pipe |
| CN112413414A (en) * | 2020-12-11 | 2021-02-26 | 大连海心信息工程有限公司 | Comprehensive detection method for leakage of heat supply pipe network |
-
2021
- 2021-03-18 CN CN202110293549.4A patent/CN113154269A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438359A (en) * | 2013-08-06 | 2013-12-11 | 毛振刚 | Oil pipeline leakage detection and positioning system |
| CN103939749A (en) * | 2014-04-28 | 2014-07-23 | 东北大学 | Oil pipeline network leakage intelligent self-adaptation monitoring system and method based on big data |
| CN105042339A (en) * | 2015-06-03 | 2015-11-11 | 中国石化销售有限公司华东分公司 | Leakage rate estimation system and method for product oil pipelines based on zero dimension |
| CN105156905A (en) * | 2015-07-09 | 2015-12-16 | 南京声宏毅霆网络科技有限公司 | Leakage monitoring system, method and device for pipeline and server |
| CN107940246A (en) * | 2017-03-15 | 2018-04-20 | 吉林省百瑞生科技发展有限公司 | A kind of fluid line source of leaks monitoring and positioning system and method |
| CN110748738A (en) * | 2019-11-29 | 2020-02-04 | 河南理工大学 | Novel shallow buried underground leakage-proof pipeline and working method thereof |
| CN110925605A (en) * | 2019-12-12 | 2020-03-27 | 上海邦芯物联网科技有限公司 | Intelligent alarm system and method for leakage of underground water pipe |
| CN111022938A (en) * | 2019-12-12 | 2020-04-17 | 上海邦芯物联网科技有限公司 | System for accurately positioning water leakage point of underground water pipe |
| CN112413414A (en) * | 2020-12-11 | 2021-02-26 | 大连海心信息工程有限公司 | Comprehensive detection method for leakage of heat supply pipe network |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108036201B (en) | A kind of Leak Detection in Oil Pipeline Using method based on negative pressure wave method and traffic trends method | |
| CN112483908A (en) | Pipeline monitoring system and monitoring method based on sound waves | |
| KR101454288B1 (en) | System for detecting leakage of service water tube | |
| CN108758354B (en) | Heat supply pipeline leakage detection system and method based on infrasonic wave and reference point | |
| CN203147291U (en) | System capable of monitoring pipeline leakage by means of infrasonic waves, flow balance and negative pressure waves | |
| KR101888188B1 (en) | Ultrasonic water meter with freeze protection function, leak detecting system including the ultrasonic water meter and leaking point edtecting method usinf the system | |
| US10078069B2 (en) | Device for detecting change in underground medium | |
| CN109373189B (en) | Device and method for measuring blocking position of concrete pump pipe | |
| CN101273257B (en) | Pressure transmitter with acoustic pressure sensor | |
| CN101392869A (en) | Safety alarm and leakage alarm method for pipe | |
| KR101965690B1 (en) | A monitoring system of water supply pipeline | |
| CN113236985A (en) | Fluid pipeline leakage online monitoring and positioning device and control method thereof | |
| CN113154269A (en) | Pipeline liquid leakage monitoring, alarming and positioning system and method | |
| CN105091990A (en) | Anhydrous test method for ultrasonic flowmeter | |
| CN209558048U (en) | A kind of pipeline leakage positioning system based on distributed infrasonic sensor | |
| KR102478882B1 (en) | Leak detection system and method based on intelligent smart metering | |
| CN114923136A (en) | Multi-array pipeline leakage positioning method and device | |
| CN109798451B (en) | Method for determining leakage position of oil gas gathering and transportation pipeline | |
| Awawdeh et al. | Wireless sensing of flow-induced vibrations for pipeline integrity monitoring | |
| CN210860681U (en) | System for be used for monitoring nonmetal pipeline and leak | |
| CN207703304U (en) | A kind of water-level detecting device based on ultrasonic probe array | |
| CN202852430U (en) | Oil and gas pipeline leak detection system based on flow equilibrium and low frequency wave technology | |
| CN105547414A (en) | Gas pipeline monitoring system and monitoring method thereof | |
| CN111398626A (en) | Liquid flow rate monitoring method for railway | |
| CN112432061A (en) | Pipeline leakage monitoring method and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210723 |
|
| RJ01 | Rejection of invention patent application after publication |