CN106764456A - A kind of natural gas line leakage administrative security systems - Google Patents
A kind of natural gas line leakage administrative security systems Download PDFInfo
- Publication number
- CN106764456A CN106764456A CN201611024068.9A CN201611024068A CN106764456A CN 106764456 A CN106764456 A CN 106764456A CN 201611024068 A CN201611024068 A CN 201611024068A CN 106764456 A CN106764456 A CN 106764456A
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- pipeline
- processing center
- analysis processing
- leakage
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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
Abstract
The invention discloses a kind of natural gas line leakage administrative security systems, data collecting system, data communication system, central analysis processing center；Quick pressure transmitter high, flowmeter and temperature sensor are electrically connected with MCU respectively, and quick pressure transmitter high is arranged in pipeline, and flowmeter one end is arranged in pipeline, and temperature sensor is provided with inside and outside pipeline；The data of collection are transferred to central analysis processing center by data collecting system by communication system, and central analysis processing center is analyzed to data message, calculates.The application installation cost is relatively low, it is only necessary to set data collecting system in the head and the tail of pipeline, the often place without pipeline again all sets sensor, it is ensured that inexpensive, big coverage rate；The application's can realize monitor in real time, once there is artificial destruction, can run through quick pressure transmitter high and determine leak time, while calculating leak point position rapidly according to the combination of quick pressure transmitter high, flowmeter and temperature sensor.
Description
Technical field
The present invention relates to natural gas line field, and in particular to a kind of natural gas line leakage administrative security systems.
Background technology
Natural gas is transported to the pipeline of urban gas center or Industry enterprise customer from exploitation ground or treatment plant, also known as defeated
Feed channel.Natural gas is conveyed using natural gas line, is the sole mode that land largely conveys natural gas.In the world, pipeline is total
In length, natural gas line accounts for half.
Existing gas pipeline is assembled by single cell by root.Modern collecting pipe and gas pipeline
It is to be formed by connecting through electric welding by steel pipe.Steel pipe has seamless pipe, spiral seam pipe, straight-seam pipes various, and it is 529 that seamless pipe is applied to caliber
Pipeline below millimeter, spiral seam pipe and straight-seam pipes are applied to large diameter pipeline.The pipe cross-sectional configuration of gathering line, it is complicated
Be undercoating-steel pipe-external insulation layer-insulation (cold insulation) layer；Simple then only steel pipe and external insulation layer, and inside coating
And insulation (cold insulation) layer adds determination again depending on gas transmission technique.
Existing pipeline feature：Gas pipeline system is a continuous closed conveying system；Make from conveying, being stored into user
With natural gas is in band pressure condition；Because the specific gravity of natural gas for conveying is small, hydrostatic head influence is much smaller than liquid, high during design
When difference is less than 200 meters, hydrostatic head is negligible, and circuit is hardly limited by longitudinal landform；In the absence of fluid pipeline water attack danger
Evil；Harmfulness is big during generation accident, involves scope extensively, and pipeline releases energy big once rupturing, and tear length is more long, discharge
Natural gas meets naked light, also easily leads to fire.
Existing Gas pipeline system can only be monitored early warning in specified location, because pipeline area coverage is wider, if
Suffer artificial destruction in pipeline middle part, it is impossible to which timely early warning is simultaneously repaired in time, can cause even more serious environmental pollution and danger.Together
Shi Ruguo can then cause relatively costly cannot popularize in Near Pipelines dense distribution sensor.
The content of the invention
Regarding to the issue above, the present invention is intended to provide a kind of inexpensive, big coverage rate, monitor in real time, being accurately positioned rapidly
Natural gas line leakage administrative security systems.
To realize the technical purpose, the solution of the present invention is：A kind of natural gas line leakage administrative security systems, bag
Include data collecting system, data communication system, central analysis processing center；
The data collecting system includes quick pressure transmitter high, flowmeter, temperature sensor, MCU, the quick pressure high
Power transmitter, flowmeter and temperature sensor are electrically connected with MCU respectively, and the quick pressure transmitter high is arranged in pipeline, institute
State flowmeter one end to be arranged in pipeline, temperature sensor is provided with inside and outside pipeline；
The communication system includes radio receiving transmitting module, communication line and wireless network module, and the communication line leads to
Cross electrical connection and access wire communication network and central analysis processing center and communicate and be connected, the radio receiving transmitting module and wireless network
Module is communicated with central analysis processing center by radio signal and is connected；
The data of collection are transferred to central analysis processing center by the data collecting system by communication system, it is described in
Centre analyzing and processing center is analyzed to data message, calculates, and specific workflow is as follows：
The first step, when there is artificial destruction, after piping failure, can suddenly form negative pressure fluctuation, while suction wave in pipeline
Can be along pipe transmmision, when the high quick pressure transmitter of pipeline both sides monitors the signal of suction wave, and pressure and changes in flow rate are super
Specified threshold values is crossed, then judges to leak, the data of collection are transferred to central analysis by data collecting system by communication system
Processing center；
Second step, using the propagation law of wavelet transformation analysis suction wave, with reference to the conversion such as the noise in pipeline, surge wave
Feature, excludes noise jamming；
3rd step, is analyzed by the physical parameter of the elastic and liquid of pipe wall, physical characteristic, processed, calculated
Negative pressure velocity of wave propagation, for the steel pipe of general conveying crude oil, negative pressure velocity of wave propagation is about 1000-1200m/s.
4th step, when being gone out by the Time Calculation for measuring the high quick pressure transmitter that the instantaneous suction wave for producing reaches both sides
Between it is poor, the spread speed of suction wave in time difference and pipeline is combined and calculates the position of leakage point；
5th step, by the changes in flow rate of flowmeter, temperature and leak time, calculates leakage rate；
6th step, central analysis processing center will determine that leak time, position and leakage rate feed back to the work of Near Pipelines
Make personnel, and at the leakage near sound, light alarm sent by broadcast and direction board point out.
Preferably, being additionally provided with magnetic valve in the pipeline, the magnetic valve is electrically connected with relay, the relay
Electrically connected with MCU.
Preferably, two ends are respectively arranged with infrared transmission module and infrared receiving module, infrared hair on the outside of the pipeline
Penetrate module corresponding with infrared receiving module, infrared receiving module is electrically connected with MCU.
Preferably, the pipeline outside is additionally provided with main Mike and noise reduction Mike, the main Mike and noise reduction Mike point
Do not electrically connected with MCU.
Beneficial effects of the present invention, the application installation cost is relatively low, it is only necessary to set data acquisition system in the head and the tail of pipeline
System, the often place without pipeline again all sets sensor, it is ensured that inexpensive, big coverage rate；The application's can realize in real time
Monitoring, once there is artificial destruction, can run through quick pressure transmitter high and determine leak time, while according to quick pressure high
The combination of transmitter, flowmeter and temperature sensor is rapid to calculate leak point position, and is sent by broadcast and direction board in time
Staff near sound, light alarm prompting, can realize quick response；Simultaneously can show in real time monitoring pipeline section pressure,
The data such as the curves such as flow and pressure, flow, maintain easily.
Specific embodiment
The present invention is described in further details with reference to specific embodiment.
Specific embodiment of the present invention is a kind of natural gas line leakage administrative security systems, including data adopt
Collecting system, data communication system, central analysis processing center；
The data collecting system includes quick pressure transmitter high, flowmeter, temperature sensor, MCU, the quick pressure high
Power transmitter, flowmeter and temperature sensor are electrically connected with MCU respectively, and the quick pressure transmitter high is arranged in pipeline, institute
State flowmeter one end to be arranged in pipeline, temperature sensor is provided with inside and outside pipeline；
The communication system includes radio receiving transmitting module, communication line and wireless network module, and the communication line leads to
Cross electrical connection and access wire communication network and central analysis processing center and communicate and be connected, the radio receiving transmitting module and wireless network
Module is communicated with central analysis processing center by radio signal and is connected；
The data of collection are transferred to central analysis processing center by the data collecting system by communication system, it is described in
Centre analyzing and processing center is analyzed to data message, calculates, and specific workflow is as follows：
The first step, when there is artificial destruction, after piping failure, can suddenly form negative pressure fluctuation, while suction wave in pipeline
Can be along pipe transmmision, when the high quick pressure transmitter of pipeline both sides monitors the signal of suction wave, and pressure and changes in flow rate are super
Specified threshold values is crossed, then judges to leak, the data of collection are transferred to central analysis by data collecting system by communication system
Processing center；
Second step, using the propagation law of wavelet transformation analysis suction wave, with reference to the conversion such as the noise in pipeline, surge wave
Feature, excludes noise jamming；
3rd step, is analyzed by the physical parameter of the elastic and liquid of pipe wall, physical characteristic, processed, calculated
Negative pressure velocity of wave propagation, for the steel pipe of general conveying crude oil, negative pressure velocity of wave propagation is about 1000-1200m/s.
4th step, when being gone out by the Time Calculation for measuring the high quick pressure transmitter that the instantaneous suction wave for producing reaches both sides
Between it is poor, the spread speed of suction wave in time difference and pipeline is combined and calculates the position of leakage point；
5th step, by the changes in flow rate of flowmeter, temperature and leak time, calculates leakage rate；
6th step, central analysis processing center will determine that leak time, position and leakage rate feed back to the work of Near Pipelines
Make personnel, and at the leakage near sound, light alarm sent by broadcast and direction board point out.Monitoring pipe can be in real time shown simultaneously
The data such as curve and pressure, flow such as pressure, the flow of section, maintain easily.
In order to improve security performance, facilitate connection or the closure of remote control pipeline, electricity is additionally provided with the pipeline
Magnet valve, the magnetic valve is electrically connected with relay, and the relay is electrically connected with MCU.When finding that leakage is extremely serious, can be with
By the long-range closed duct of Control magnetic valve, the environmental pollution that leakage is produced is reduced.
In order to realize giving warning in advance, two ends are respectively arranged with infrared transmission module and infrared receiving on the outside of the pipeline
Block, infrared transmission module is corresponding with infrared receiving module, and infrared receiving module is electrically connected with MCU.When infrared ray is for blocking,
Can with learnt that object near pipe surface, close object can be expelled by means such as early warning of blowing a whistle.
In order to further improve early warning effect, the pipeline outside is additionally provided with main Mike and noise reduction Mike, the main wheat
Gram and noise reduction Mike electrically connected with MCU respectively.Slot is produced when pipeline occurs trickle rupture, because air leakage is smaller, pressure becomes
Not substantially, quick pressure transmitter high is it is possible that judge by accident, and gas leakage now can produce the sharp air wave of low frequency, pass through for change
Main Mike can be collected into the change of air wave, and then quickly find leak case, while by noise reduction wheat background correction sound, entering
One step improves precision.
The natural gas line leakage administrative security systems of the application with negative pressure wave method as basic skills, using pipeline wink
States model, is positioned using flow alarm function, pressure, and flow+pressure comprehensive analysis alarm, positioning.Safe report greatly improved
Alert accuracy rate, while keeping sufficiently large security monitoring coverage rate at a lower cost.
When pipeline is leaked, due to the pressure difference inside and outside pipeline, make the abrupt pressure reduction of leak, the gas around leak
Body is supplemented due to the presence of pressure difference to leak, forms negative pressure fluctuation suddenly in pipeline.This suction wave is from leakage point to pipeline
Upper and lower end is propagated, and is decayed with index percent, is gradually smoothed down, and the situation of this suction wave and normal pressure fluctuation is absolutely not
Together, the forward position with steeper.The high quick pressure transmitter at two ends receives the negative pressure wave signal and collected system is collected and recorded.
Combination pressure and the variation characteristic of flow are carried out judging whether leakage occurs system what is produced during by measuring leakage is instantaneous
The spread speed of time difference and manifold pressure ripple that pressure wave reaches upper and lower end calculates the position of leakage point.In order to overcome
The interference of the factors such as duct noise, using noise, water in the propagation law and pipeline of wavelet transformation and correlation analysis suction wave
Hit the conversion feature such as ripple, and elasticity and the physical parameter of gas, physical characteristic with reference to pipe wall is analyzed, processes, counts
Calculate.For the steel pipe of general conveying natural gas, negative pressure velocity of wave propagation is about 1000-1200m/s.The application Gao Min
Pressure transmitter is more sensitive for accident release, is adapted to monitoring because of the leakage for artificially causing, but for slow corrosion
Seepage is not very sensitive.
Time difference, duct length, pressure propagation speed that the system is responded according to suction wave, set up basic mathematical theory
Model.System again according to because pipeline physical parameter, by factors such as the physicochemical property of defeated medium and temperature dampings to pressure wave
The attenuation change that transmission speed is caused, has carried out necessary compensation and amendment.
The above, only presently preferred embodiments of the present invention is not intended to limit the invention, every according to skill of the invention
Any trickle amendment, equivalent and improvement that art is substantially made to above example, should be included in technical solution of the present invention
Protection domain within.
Claims (4)
1. a kind of natural gas line leakage administrative security systems, it is characterised in that：Including data collecting system, data communication
System, central analysis processing center；
The data collecting system includes quick pressure transmitter high, flowmeter, temperature sensor, MCU, and the quick pressure high becomes
Device, flowmeter and temperature sensor is sent to be electrically connected with MCU respectively, the quick pressure transmitter high is arranged in pipeline, the stream
Gauge one end is arranged in pipeline, and temperature sensor is provided with inside and outside pipeline；
The communication system includes radio receiving transmitting module, communication line and wireless network module, and the communication line is by electricity
Connection accesses wire communication network and central analysis processing center and communicates and is connected, the radio receiving transmitting module and wireless network module
Communicated with central analysis processing center by radio signal and be connected；
The data of collection are transferred to central analysis processing center, the center point by the data collecting system by communication system
Analysis processing center is analyzed to data message, calculates, and specific workflow is as follows：
The first step, when there is artificial destruction, after piping failure, can suddenly form negative pressure fluctuation, while suction wave can edge in pipeline
Pipe transmmision, when the high quick pressure transmitter of pipeline both sides monitors the signal of suction wave, and pressure and changes in flow rate exceed volume
Determine threshold values, then judge to leak, the data of collection are transferred to central analysis and processed by data collecting system by communication system
Center；
Second step, using the propagation law of wavelet transformation analysis suction wave, converts special with reference to the noise in pipeline, surge wave etc.
Point, excludes noise jamming；
3rd step, is analyzed by the physical parameter of the elastic and liquid of pipe wall, physical characteristic, processes, calculates negative pressure
Velocity of wave propagation, for the steel pipe of general conveying crude oil, negative pressure velocity of wave propagation is about 1000-1200m/s.
4th step, the time is gone out by the Time Calculation for measuring the high quick pressure transmitter that the instantaneous suction wave for producing reaches both sides
Difference, the spread speed of suction wave in time difference and pipeline is combined the position for calculating leakage point；
5th step, by the changes in flow rate of flowmeter, temperature and leak time, calculates leakage rate；
6th step, central analysis processing center will determine that leak time, position and leakage rate feed back to the work people of Near Pipelines
Member, and at the leakage near sound, light alarm prompting are sent by broadcast and direction board.
2. natural gas line leakage administrative security systems according to claim 1, it is characterised in that：In the pipeline
Magnetic valve is additionally provided with, the magnetic valve is electrically connected with relay, and the relay is electrically connected with MCU.
3. natural gas line leakage administrative security systems according to claim 1, it is characterised in that：Outside the pipeline
Side two ends are respectively arranged with infrared transmission module and infrared receiving module, and infrared transmission module is corresponding with infrared receiving module,
Infrared receiving module is electrically connected with MCU.
4. natural gas line leakage administrative security systems according to claim 1, it is characterised in that：Outside the pipeline
Side is additionally provided with main Mike and noise reduction Mike, and the main Mike and noise reduction Mike electrically connect with MCU respectively.
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| CN201611024068.9A CN106764456B (en) | 2016-11-17 | 2016-11-17 | A kind of natural gas line leakage administrative security systems |
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|---|---|---|---|
| CN201611024068.9A CN106764456B (en) | 2016-11-17 | 2016-11-17 | A kind of natural gas line leakage administrative security systems |
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| CN106764456A true CN106764456A (en) | 2017-05-31 |
| CN106764456B CN106764456B (en) | 2019-04-19 |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975677A (en) * | 2017-11-24 | 2018-05-01 | 新疆润霖新能源技术有限公司 | Threshold limit values metering device and its application method |
| CN108224097A (en) * | 2018-01-30 | 2018-06-29 | 北京建筑大学 | A kind of gas pipeline leakage alarm system and detection method |
| CN108758353A (en) * | 2018-06-12 | 2018-11-06 | 青岛汇安谷科技发展有限公司 | Distribution type fiber-optic many reference amounts pipe leakage positioning alarm system and leakage locating method |
| CN108844694A (en) * | 2018-08-02 | 2018-11-20 | 兰州交通大学 | Air-tightness detection device and its detection method in a kind of movement of high-speed EMUs |
| CN110630910A (en) * | 2019-07-02 | 2019-12-31 | 安徽理工大学 | Urban underground gas pipeline monitoring system |
| CN111174104A (en) * | 2020-01-15 | 2020-05-19 | 深圳市华霆自动化工程有限公司 | LORA-based natural gas transmission remote monitoring system |
| CN111637368A (en) * | 2020-05-06 | 2020-09-08 | 安徽省天然气开发股份有限公司 | Natural gas pipeline management system |
| CN111771112A (en) * | 2017-11-20 | 2020-10-13 | Phyn有限责任公司 | Passive leak detection for building water supply |
| CN112611526A (en) * | 2020-11-02 | 2021-04-06 | 中国石油天然气股份有限公司规划总院 | Natural gas monitoring system with error correction mechanism |
| CN113236986A (en) * | 2021-06-30 | 2021-08-10 | 杭州艾科赛德电子科技有限公司 | Pipeline leakage monitoring system based on sonar detection |
| CN113944891A (en) * | 2021-11-05 | 2022-01-18 | 中国安全生产科学研究院 | Chemical device facility leakage detection and correction method |
| CN113958870A (en) * | 2021-11-12 | 2022-01-21 | 西安石油大学 | Monitoring device for safe transportation of natural gas |
| CN114087542A (en) * | 2021-11-23 | 2022-02-25 | 国家石油天然气管网集团有限公司华南分公司 | Pipeline leakage detection method, device and medium based on SCADA system |
| WO2023044819A1 (en) * | 2021-09-24 | 2023-03-30 | Abb Schweiz Ag | Method and apparatus for gas leak detection |
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| CN111771112A (en) * | 2017-11-20 | 2020-10-13 | Phyn有限责任公司 | Passive leak detection for building water supply |
| CN107975677A (en) * | 2017-11-24 | 2018-05-01 | 新疆润霖新能源技术有限公司 | Threshold limit values metering device and its application method |
| CN107975677B (en) * | 2017-11-24 | 2023-10-17 | 新疆润霖新能源技术有限公司 | Safety limit metering device and use method thereof |
| CN108224097A (en) * | 2018-01-30 | 2018-06-29 | 北京建筑大学 | A kind of gas pipeline leakage alarm system and detection method |
| CN108758353A (en) * | 2018-06-12 | 2018-11-06 | 青岛汇安谷科技发展有限公司 | Distribution type fiber-optic many reference amounts pipe leakage positioning alarm system and leakage locating method |
| CN108844694A (en) * | 2018-08-02 | 2018-11-20 | 兰州交通大学 | Air-tightness detection device and its detection method in a kind of movement of high-speed EMUs |
| CN108844694B (en) * | 2018-08-02 | 2020-04-14 | 兰州交通大学 | Air tightness detection device and detection method in motion of high-speed motor train unit |
| CN110630910A (en) * | 2019-07-02 | 2019-12-31 | 安徽理工大学 | Urban underground gas pipeline monitoring system |
| CN111174104A (en) * | 2020-01-15 | 2020-05-19 | 深圳市华霆自动化工程有限公司 | LORA-based natural gas transmission remote monitoring system |
| CN111637368A (en) * | 2020-05-06 | 2020-09-08 | 安徽省天然气开发股份有限公司 | Natural gas pipeline management system |
| CN112611526A (en) * | 2020-11-02 | 2021-04-06 | 中国石油天然气股份有限公司规划总院 | Natural gas monitoring system with error correction mechanism |
| CN113236986A (en) * | 2021-06-30 | 2021-08-10 | 杭州艾科赛德电子科技有限公司 | Pipeline leakage monitoring system based on sonar detection |
| CN113236986B (en) * | 2021-06-30 | 2022-10-28 | 杭州艾科赛德电子科技有限公司 | Pipeline leakage monitoring system based on sonar detection |
| WO2023044819A1 (en) * | 2021-09-24 | 2023-03-30 | Abb Schweiz Ag | Method and apparatus for gas leak detection |
| CN113944891A (en) * | 2021-11-05 | 2022-01-18 | 中国安全生产科学研究院 | Chemical device facility leakage detection and correction method |
| CN113958870A (en) * | 2021-11-12 | 2022-01-21 | 西安石油大学 | Monitoring device for safe transportation of natural gas |
| CN114087542A (en) * | 2021-11-23 | 2022-02-25 | 国家石油天然气管网集团有限公司华南分公司 | Pipeline leakage detection method, device and medium based on SCADA system |
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