CN116906841A - Pipeline micro-leakage on-line monitoring method and monitoring system - Google Patents
Pipeline micro-leakage on-line monitoring method and monitoring system Download PDFInfo
- Publication number
- CN116906841A CN116906841A CN202311050016.9A CN202311050016A CN116906841A CN 116906841 A CN116906841 A CN 116906841A CN 202311050016 A CN202311050016 A CN 202311050016A CN 116906841 A CN116906841 A CN 116906841A
- Authority
- CN
- China
- Prior art keywords
- monitoring
- leakage
- ground potential
- pipeline
- micro
- 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
- 238000012544 monitoring process Methods 0.000 title claims abstract description 289
- 238000000034 method Methods 0.000 title claims abstract description 56
- 230000008859 change Effects 0.000 claims abstract description 74
- 230000008054 signal transmission Effects 0.000 claims abstract description 37
- 230000008569 process Effects 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 239000002131 composite material Substances 0.000 claims abstract description 12
- 238000009826 distribution Methods 0.000 claims description 17
- 238000013439 planning Methods 0.000 claims description 8
- 238000007726 management method Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 6
- 230000004807 localization Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 238000013507 mapping Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 56
- 238000012545 processing Methods 0.000 description 13
- 239000011241 protective layer Substances 0.000 description 11
- 238000004891 communication Methods 0.000 description 10
- 239000012530 fluid Substances 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000007405 data analysis Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000877 morphologic effect Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000002990 reinforced plastic Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000012800 visualization Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000003483 aging Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000007621 cluster analysis Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000013523 data management Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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)
- Pipeline Systems (AREA)
Abstract
The invention provides an on-line monitoring method and a monitoring system for pipeline micro-leakage, which solve the technical problem that the existing monitoring technology can not timely and effectively acquire the micro-damage state of an outer protection layer of a reinforced composite pipe with a steel skeleton. The method comprises the following steps: forming an electric signal transmission loop between the conveying pipeline and the ground by utilizing the continuous conductive medium layer of the conveying pipeline and combining a voltage source, and forming a potential monitoring reference through the electric signal transmission loop; forming a monitoring point position set on the extending path of the conductive medium layer, wherein the monitoring point position monitors the change of a pipe ground potential signal between the corresponding position of the conveying pipeline and the ground; and judging the micro leakage state of the conveying pipeline according to the change of the pipe ground potential signal fed back by the monitoring point position. The quantitative reference is reliable, the small change of the tube ground potential is effectively sensed, and effective and accurate tube ground potential change information is provided for judging the leakage position and the leakage trend. The monitoring control process is provided, so that the leakage condition of the pipeline can be effectively monitored and managed, and the operation safety and maintenance efficiency of the pipeline are improved.
Description
Technical Field
The invention relates to the technical field of monitoring, in particular to a pipeline micro-leakage online monitoring method and a monitoring system.
Background
The reinforced plastic composite pipe is used to form conveying pipeline for large amount of crude oil, industrial waste water, industrial waste gas and other fluid conveyed at normal temperature. Taking a steel skeleton reinforced plastic continuous composite pipe as an example, a composite layer structure of a crosslinked polyethylene layer (used for forming a conveying channel), a carbon steel skeleton layer (used for forming a rigid support of the conveying channel) and a polyethylene layer (used for forming toughness protection of the conveying channel) from inside to outside is adopted, and the phenomenon that the protective layer is damaged to different degrees to further cause fluid micro leakage can occur along with the ageing, corrosion, abrasion and other reasons of a pipeline, so that not only is the waste of fluid resources caused, but also the environment is polluted.
In the prior art, the leakage monitoring of the buried metal pipeline mainly comprises a direct measurement method, a negative pressure method, a flow balance method, an acoustic wave method and the like. However, these methods are limited by manpower inspection cost and sensor equipment installation cost, or limited by insufficient capacity of positioning a flow leakage zone, and cannot effectively solve the problems of sensing the micro-damage state of the steel skeleton reinforced composite pipe outer protective layer and positioning the leakage zone.
Disclosure of Invention
In view of the above problems, the embodiment of the invention provides an online monitoring method and system for pipeline micro-leakage, which solve the technical problem that the existing monitoring technology cannot timely and effectively acquire the micro-damage state of an outer protection layer of a reinforced composite pipe with a steel skeleton.
The pipeline micro-leakage on-line monitoring method provided by the embodiment of the invention comprises the following steps:
forming an electric signal transmission loop between the conveying pipeline and the ground by utilizing the continuous conductive medium layer of the conveying pipeline and combining a voltage source, and forming a potential monitoring reference through the electric signal transmission loop;
forming a monitoring point position set on the extending path of the conductive medium layer, wherein the monitoring point position monitors the change of a pipe ground potential signal between the corresponding position of the conveying pipeline and the ground;
and judging the micro leakage state of the conveying pipeline according to the change of the pipe ground potential signal fed back by the monitoring point position.
In an embodiment of the present invention, the forming an electrical signal transmission loop between the transmission pipeline and the ground by using the continuous conductive medium layer of the transmission pipeline in combination with the voltage source, and forming the potential monitoring reference through the electrical signal transmission loop includes:
planning the topological structure of the conveying pipelines in the area to determine conveying pipeline branches and/or local conveying pipeline networks for monitoring;
setting a direct-current voltage source for a conductive medium layer branch or a local conductive medium layer network to form an electric signal transmission loop;
and feeding back potential monitoring reference data in the electric signal transmission loop, and controlling and adjusting output parameters of the direct current voltage source.
In an embodiment of the present invention, forming a monitoring point set on an extension path of the conductive medium layer, monitoring a change of a pipe ground potential signal between a corresponding position of a conveying pipeline and the ground by using the monitoring point includes:
determining monitoring points according to the geographic distribution characteristics of the branch pipelines and/or the local pipeline network, and establishing type attributes among the monitoring points;
and continuously collecting the ground potential signal of the pipe at the monitoring point to feed back, and adjusting the collection control parameters under control.
In an embodiment of the present invention, the determining the micro leakage state of the conveying pipeline according to the change of the pipe ground potential signal fed back by the monitoring point location includes:
receiving the pipe ground potential data fed back by each monitoring point location to form a pipe ground potential change data sequence of each monitoring point location;
judging that peripheral leakage of the monitoring point occurs when the numerical variation of the adjacent pipe ground potential in the pipe ground potential variation data sequence accords with the leakage rule;
judging a leakage section according to a section positioning rule when judging that the monitoring point leakage occurs;
and judging the leakage trend according to the change trend of the ground potential in the inner pipe in the time sequence period of the adjacent monitoring points of the leakage occurrence monitoring points and the geographic distribution characteristics of the adjacent monitoring points.
In an embodiment of the present invention, the leakage rule includes:
threshold rule: setting a pipe ground potential jump threshold value, and judging that the monitoring point position leakage occurs when the change value of the continuously adjacent pipe ground potential exceeds or is lower than the threshold value;
rate of change rule: judging that leakage occurs when the monotonic change rate of the tube ground potential value exceeds a set threshold value;
statistical rules: and determining the deviation of the post-stage pipe ground potential value according to the mean value or the variance of the pre-stage pipe ground potential value, and determining that leakage occurs when the deviation reaches a set threshold value.
In an embodiment of the present invention, the interval positioning rule includes:
linear positioning rule: according to the fluctuation condition of the tube ground potential value in the tube ground potential change data sequence of the leakage occurrence monitoring point, establishing a fluctuation linear equation to calculate the approximate range of the leakage position corresponding to the tube ground potential fluctuation;
multi-point positioning rules: and calculating a specific interval of the leakage position by utilizing the pipe ground potential value of three or more monitoring points with the geographic position close to the leakage occurrence monitoring point according to the multipoint difference measurement principle.
Statistical localization rules: and forming a distance deviation judgment for mapping the later-stage pipe ground potential value according to the mean value or the variance of the earlier-stage pipe ground potential value of the leakage occurrence monitoring point, and calculating a leakage interval.
In an embodiment of the present invention, the method further includes:
forming storage and inquiry of a tube ground potential change data sequence of each monitoring point position, and forming multi-dimensional quantized data of a micro leakage state of a conveying pipeline;
forming a data display of the micro-leakage state according to the multi-dimensional quantized data of the specific micro-leakage state;
forming an alarm and a notification according to the multidimensional quantitative description data of the specific micro leakage state;
and forming a remote control and management for the direct-current voltage source and the monitoring point according to the multidimensional quantitative description data of the specific micro-leakage state.
The pipeline micro-leakage on-line monitoring system of the embodiment of the invention comprises:
the memory is used for storing program codes in the processing process of the pipeline micro leakage on-line monitoring method;
and a processor for executing the program code.
The pipeline micro-leakage on-line monitoring system of the embodiment of the invention comprises:
the reference forming device is used for forming an electric signal transmission loop between the conveying pipeline and the ground by utilizing the continuous conductive medium layer of the conveying pipeline and combining a voltage source, and forming a potential monitoring reference through the electric signal transmission loop;
the change acquisition device is used for forming a monitoring point position set on the extending path of the conductive medium layer, and monitoring the change of a pipe ground potential signal between the corresponding position of the conveying pipeline and the ground by the monitoring point position;
and the state judging device is used for judging the micro leakage state of the conveying pipeline according to the change of the pipe ground potential signal fed back by the monitoring point position.
The pipeline micro-leakage on-line monitoring system of the embodiment of the invention comprises:
the transmitter is used for outputting direct-current voltage to the conductive medium layer of the steel skeleton reinforced composite pipe forming the conveying pipeline in a controlled way, collecting potential monitoring reference data of an electric signal transmission loop formed between the conductive medium layer and the ground and feeding back the potential monitoring reference data to the monitoring platform;
the receiver is used for controllably collecting a pipe ground potential signal between the conductive medium layer and the ground at a monitoring point position of the conveying pipeline and feeding back the pipe ground potential signal to the monitoring platform;
and the monitoring platform is used for judging the micro leakage state according to the potential monitoring reference data and the pipe ground potential signal and forming monitoring control according to the judging result.
The on-line monitoring method and the monitoring system for the pipeline micro-leakage ensure the reliability of the quantized reference of the local pipeline ground potential change by utilizing the extension consistency of the supporting steel skeleton and the conveying pipeline. The monitoring point position is used for acquiring the tiny change of the ground potential of the pipe in the local range when the protective layer of the conveying pipeline is in tiny leakage, so that the leakage state is effectively perceived in real time, and effective and accurate pipe ground potential change information is provided for judging the leakage position and the leakage trend. The monitoring point position and the ground potential change data of the monitoring point position and the geographical information of the monitoring point position are fully applied to form a series of monitoring control processes such as real-time monitoring, high-precision leakage interval positioning, remote monitoring, automatic alarming and the like, so that the leakage condition of the pipeline can be effectively monitored and managed, and the operation safety and maintenance efficiency of the pipeline are improved.
Drawings
FIG. 1 is a flow chart of an on-line monitoring method for pipeline micro-leakage according to an embodiment of the invention.
Fig. 2 is a schematic diagram showing abrupt changes of a pipe ground potential signal when a protection layer is subjected to micro-leakage in an on-line monitoring method for pipeline micro-leakage according to an embodiment of the present invention.
Fig. 3 is a schematic diagram showing a change of a tube ground potential signal for locating a leakage section in an on-line monitoring method of a micro-leakage pipeline according to an embodiment of the invention.
FIG. 4 is a schematic diagram of an embodiment of an on-line monitoring system for pipeline micro-leakage.
FIG. 5 is a schematic diagram of an embodiment of an on-line monitoring system for micro-leakage of a pipeline.
FIG. 6 is a schematic diagram showing a pipeline micro-leakage on-line monitoring system according to an embodiment of the invention.
Detailed Description
The present invention will be further described with reference to the drawings and the detailed description below, in order to make the objects, technical solutions and advantages of the present invention more apparent. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention discloses an on-line monitoring method for pipeline micro leakage, which is shown in figure 1. In fig. 1, the present embodiment includes:
step 100: and forming an electric signal transmission loop between the conveying pipeline and the ground by utilizing the continuous conductive medium layer of the conveying pipeline and combining a voltage source, and forming a potential monitoring reference through the electric signal transmission loop.
The conductive medium layer mainly comprises a continuous steel skeleton in the conveying pipeline, a conductive bridging part for forming electric communication between the conveying pipelines through joint bridging treatment, and the like. The continuous conductive medium layer ensures a well insulated electrical conductor forming a uniform path along the extension of the transport conduit. The positive electrode and the negative electrode of the voltage source are matched between the conveying pipeline and the ground by utilizing the conductive medium layer to form an electric signal transmission loop. In the electric signal transmission loop, the conductive medium layer has determined potential values at the positions of each extending length of the transmission pipeline, and can be used as potential monitoring references for extending the positions of each length.
The direction of the extending path of the conductive medium layer is consistent with that of the conveying pipeline, the conductive medium layer along with the extending of the conveying pipeline can form a topological structure aiming at the conductive medium layer in the pipeline coverage area, and branches or local networks of different conductive medium layers can be formed. And then cooperates with the voltage source to form one or a plurality of potential monitoring references of the conductive medium layer branches or the local network, so as to form a point location monitoring foundation for one or a plurality of conveying pipelines or the local network of the conveying pipelines.
Step 200: and forming a monitoring point position set on the extending path of the conductive medium layer, wherein the monitoring point position monitors the change of the pipe ground potential signal between the corresponding position of the conveying pipeline and the ground.
A local network or a branch formed by facing the conductive medium layer is provided with a monitoring point position set, the monitoring point positions are arranged at selected positions of the branch of the conductive medium layer, and the intervals of the monitoring point positions meet the requirements of effective pipe ground potential signal acquisition of corresponding conveying pipelines.
The monitoring point is used for continuously collecting a pipe ground potential signal between the conductive medium layer at the set position and the ground by using the potential sensor. According to the potential monitoring standard, the change information of the pipe ground potential signal between the monitoring point and the ground when the protection layer of the conveying pipeline generates fluid micro leakage around the monitoring point can be obtained.
Step 300: and judging the micro leakage state of the conveying pipeline according to the change of the pipe ground potential signal fed back by the monitoring point position.
The data of the change of the pipe ground potential signal is fed back through the monitoring point position, and a wireless communication technology is preferable by a feedback path which can be adopted, and the wireless communication technology comprises but is not limited to WiFi, bluetooth, zigbee, loRaWAN, NB-IOT and the like.
And the data fed back by the monitoring point position form basic feedback data storage, judgment rule processing and judgment conclusion data sharing in the judgment process through storage resources, operation resources and network resources.
The on-line monitoring method for the pipeline micro-leakage is used for monitoring the state of the protection layer micro-leakage for the conveying pipeline with the supporting steel skeleton. And the reliability of the quantized reference of the local pipe ground potential change is ensured by utilizing the extension consistency of the supporting steel skeleton and the conveying pipeline and the topological structure optimization of the supporting steel skeleton branch circuit to form the potential monitoring reference related to the extension length in the whole extension range of the conveying pipeline. Through the extensive setting of monitoring point position and signal acquisition's real-time and sensitivity, obtain the tiny change of local in-range pipe ground potential when the pipeline protective layer appears tiny leakage, effectively real-time perception leakage state provides effective accurate pipe ground potential change information for leakage position, leakage trend judgement. The potential monitoring reference has high anti-interference performance in the process of collecting the tube ground potential signals, can effectively resist electromagnetic interference and environmental noise interference, and can effectively reduce the technical cost and ensure the service life and reliability of long-term operation in severe environments. The potential monitoring equipment and the voltage source are arranged to reform the conveying pipeline, so that the cost is low, the installation and maintenance of the system are relatively simple and convenient, and the maintenance cost and the workload are reduced.
Further, a series of monitoring control processes such as efficient data transmission, real-time monitoring, high-precision leakage interval positioning, remote monitoring, automatic alarming and the like can be formed by fully applying the pipe ground potential change data of the monitoring point positions and the geographical information of the monitoring point positions, so that the leakage condition of the pipeline can be effectively monitored and managed, and the operation safety and maintenance efficiency of the pipeline are improved.
In an embodiment of the present invention, monitoring data management, micro-leakage state determination and monitoring control are performed by using an internet of things cloud platform, which may include, but is not limited to:
and storing the monitoring data fed back in real time. The cloud platform of the Internet of things can be used for receiving real-time monitoring data from all parts and sensors in the system and storing and processing the real-time monitoring data. The data may include changes in various indicators of temperature, pressure, flow, etc.
Monitoring data analysis and processing. And carrying out real-time analysis on the received monitoring data by utilizing a data analysis and processing function of the cloud platform of the Internet of things. Including statistics of data, trend analysis, anomaly detection, etc., to provide further insight and judgment.
Data presentation and visualization. The cloud platform of the Internet of things displays the real-time monitoring data to the user in the form of charts, tables or other visualizations through an intuitive customized interface. The user can intuitively know the running condition of the system and the change trend of the key index.
Alarm and notification. Based on the analysis result of the monitoring data, the cloud platform of the Internet of things triggers an alarm and a notification according to preset conditions and a threshold value. When the system is abnormal or exceeds the set range, an alarm can be sent to the user in time and corresponding advice can be provided.
Remote control and management. Remote control and management of the monitoring system can be realized by utilizing the cloud platform of the Internet of things. The user can perform operations such as instruction issuing, parameter adjustment and the like through the platform so as to optimize the operation efficiency and performance of the system.
According to the pipeline micro-leakage online monitoring method, the internet of things cloud platform is utilized to provide the functions of storing, analyzing and displaying real-time monitoring data, so that a user can more conveniently check and manage various indexes of system operation, and corresponding measures can be taken in time. This helps to improve the stability, reliability and efficiency of the system and provides better management decision support for the user.
As shown in fig. 1, in an embodiment of the present invention, step 100 includes:
step 110: the topology of the transport pipes in the area is planned to determine the transport pipe branches and/or the local transport pipe network to be monitored.
The necessary planning of the transport pipelines in the oil and gas field production area comprises:
obtaining the geographic distribution and the communication state of the steel skeleton reinforced composite pipe;
forming electric connection adjustment of the branch of the conveying pipeline corresponding to the branch of the conductive medium layer according to the planning purpose;
and determining a local conductive medium layer network corresponding to the local conveying pipeline network according to the planning purpose.
Step 120: and setting a direct-current voltage source for the conductive medium layer branch or the local conductive medium layer network to form an electric signal transmission loop.
The direct current voltage sources are arranged for at least one conductive medium layer branch or one conductive medium layer network, and partial differences can exist in the output direct current voltage of each direct current voltage source according to the planning, so that the influence of the extension distance and the topological structure of the conductive medium layer branch or the conductive medium layer network in the electric signal transmission loop on the stability of the potential monitoring reference is overcome.
Step 130: and feeding back potential monitoring reference data in the electric signal transmission loop, and controlling and adjusting output parameters of the direct current voltage source.
The direct-current voltage source outputs direct-current voltage to the electric signal transmission loop. And meanwhile, voltage signals of the potential monitoring reference through the load in the loop are collected, the voltage signals are converted into corresponding potential monitoring reference data, the corresponding potential monitoring reference data are fed back to the upper data processing process, and the output parameters of the direct current voltage source are adjusted according to control data formed in the upper data processing process.
According to the on-line monitoring method for the micro leakage of the pipeline, disclosed by the embodiment of the invention, the potential monitoring of the micro leakage which occurs when the pipeline protection layer corresponding to the conveying pipeline is damaged is formed by utilizing the conductive medium layer corresponding to the conveying pipeline, so that the monitoring resource optimization for the micro leakage monitoring of the conveying pipeline of a specific type in an oil-gas field production area is facilitated, and the monitoring efficiency and the monitoring data correlation of a local monitoring area are improved. And meanwhile, the potential monitoring reference data feedback and the controlled adjustment are utilized to form the controlled adjustment of the potential monitoring reference of the whole monitoring process, so that the environmental signal interference of the monitoring process is overcome, and the adaptability of the monitoring process is improved.
As shown in fig. 1, in an embodiment of the present invention, step 200 includes:
step 210: and determining monitoring points according to the geographical distribution characteristics of the branch pipelines and/or the local pipeline network, and establishing type attributes among the monitoring points.
The geographical distribution characteristics include, but are not limited to, geographical information characteristics such as distribution height, distribution density, distribution spacing, and distribution range of the pipeline branches and/or the local pipeline network. The method also comprises morphological information characteristics such as bending angles, continuous bending quantity, bending distance and the like of the conveying pipeline route. The method comprises the steps of carrying out cluster analysis on monitoring points through geographic information features and morphological information features, and obtaining explicit and implicit correlation attributes among the monitoring points for dividing the types of the monitoring points. The monitoring point position selection dimension can be formed for the subsequent monitoring data analysis, and the data analysis level of the micro leakage state can be improved by utilizing different types of monitoring point position monitoring data.
Step 220: and continuously collecting the ground potential signal of the pipe at the monitoring point to feed back, and adjusting the collection control parameters under control.
And the monitoring point location continuously collects the pipe ground potential signal through the corresponding potential sensor, feeds back the pipe ground potential signal to the upper data processing process, and adjusts the strategy parameters continuously collected according to control data formed in the upper data processing process.
The pipeline micro-leakage on-line monitoring method provided by the embodiment of the invention utilizes the geographic distribution characteristics of the conveying pipeline to carry out targeted monitoring point position setting so as to optimize the number of the monitoring point positions, improve the monitoring efficiency and reduce the monitoring cost.
As shown in fig. 1, in an embodiment of the present invention, step 300 includes:
step 310: and receiving the pipe ground potential data fed back by each monitoring point location to form a pipe ground potential change data sequence of each monitoring point location.
Each monitoring point location converts and packages the real-time pipe ground potential signal into pipe ground potential data for active feedback in a set period. The tube ground potential data forms a tube ground potential change data sequence through time sequence, and orderly stores monitoring data are formed.
In one embodiment of the present invention, the platform computing resource is utilized to preprocess the tube ground potential variation data, and the variation difference of the tube ground potential is mainly stored in the tube ground potential variation data sequence. And the data processing efficiency is improved for the subsequent judging process.
Step 320: and judging that the peripheral leakage of the monitoring point position occurs when the numerical variation of the adjacent pipe ground potential in the pipe ground potential variation data sequence accords with the leakage rule.
Leakage rules include, but are not limited to:
threshold rule: setting a pipe ground potential jump threshold value, and judging that the monitoring point position leakage occurs when the change value of the continuously adjacent pipe ground potential exceeds or is lower than the threshold value;
the abrupt change of the tube ground potential signal when the protection layer is micro-leaked is shown in fig. 2. In the moment of micro leakage in fig. 2, a larger voltage jump can occur when the pipe ground potential of an adjacent monitoring point is influenced by leakage fluid, and the voltage jump can be obtained through monitoring. The change of the adjacent tube ground potential value includes, but is not limited to, increasing the jump, decreasing the jump, continuously jumping the adjacent tube ground potential value periodically, and the like, and each change can set the jump threshold.
Rate of change rule: judging that leakage occurs when the monotonic change rate of the tube ground potential value exceeds a set threshold value;
statistical rules: and determining the deviation of the post-stage pipe ground potential value according to the mean value or the variance of the pre-stage pipe ground potential value, and determining that leakage occurs when the deviation reaches a set threshold value.
Step 330: and judging a leakage section according to the section positioning rule when judging that the monitoring point leakage occurs.
Interval locating rules include, but are not limited to:
linear positioning rule: according to the fluctuation condition of the tube ground potential value in the tube ground potential change data sequence of the leakage occurrence monitoring point, establishing a fluctuation linear equation to calculate the approximate range of the leakage position corresponding to the tube ground potential fluctuation;
multi-point positioning rules: and calculating a specific interval of the leakage position by utilizing the pipe ground potential value of three or more monitoring points with the geographic position close to the leakage occurrence monitoring point according to the multipoint difference measurement principle.
In an embodiment of the present invention, the cluster attribute of the adjacent monitoring points should be uncorrelated, so as to represent the difference of the tube ground potential values caused by the difference of the geographical distribution characteristics of the adjacent monitoring points.
The variation of the tube ground potential signal for leak interval localization is shown in fig. 3. In fig. 3, micro-leakage may cause variations in the tube ground potential values of adjacent monitoring sites. The leakage interval is between the monitoring point with the largest voltage change and the monitoring point closest to the upstream of the voltage source direction.
Statistical localization rules: and forming a distance deviation judgment for mapping the later-stage pipe ground potential value according to the mean value or the variance of the earlier-stage pipe ground potential value of the leakage occurrence monitoring point, and calculating a leakage interval.
Step 340: and judging the leakage trend according to the change trend of the ground potential in the inner pipe in the time sequence period of the adjacent monitoring points of the leakage occurrence monitoring points and the geographic distribution characteristics of the adjacent monitoring points.
By using the period duration of the same time sequence as an analysis window, the leakage flow trend can be quantified by analyzing the change trend of the tube ground potential of the leakage occurrence monitoring point, and the leakage direction and the leakage rate can be quantified by combining the geographic distribution characteristics of the adjacent monitoring points.
The pipeline micro-leakage on-line monitoring method of the embodiment of the invention combines the time-sequence pipeline ground potential change data sequence and the geographic information to form continuous judgment of leakage confirmation, leakage positioning and leakage trend when the micro-leakage occurs in the protective layer, forms multi-dimensional quantitative description of specific micro-leakage state, and provides accurate decision basis for subsequent decision and linkage.
As shown in fig. 1, in an embodiment of the present invention, step 300 further includes:
step 350: and storing and inquiring the tube ground potential change data sequences of all the monitoring points to form multi-dimensional quantized data of the micro-leakage state of the conveying pipeline.
Through the judging process of the micro-leakage state in the embodiment, the comprehensive dynamic micro-leakage state judging process data and conclusion data of the outer protection layer of the conveying pipeline can be obtained by utilizing the storage resources and the computing resources of the cloud platform of the Internet of things, and the multi-dimensional quantitative data of the micro-leakage state can be formed by combining the monitoring data in the pipe ground potential change data sequence. The multidimensional quantized data is stored in order and can be retrieved, filtered and queried.
Step 360: and forming data display of the micro-leakage state according to the multi-dimensional quantized data of the specific micro-leakage state.
And displaying the comprehensive dynamic micro-leakage state and response data content of the outer protective layer of the conveying pipeline according to the requirement through a human-computer interaction interface.
Step 370: alarms and notifications are formed based on multi-dimensional quantitative descriptive data for specific micro-leak conditions.
And forming alarm levels and notification contents for an operation and maintenance system and operation and maintenance personnel by combining alarm strategies according to the judging process data and conclusion data of the comprehensive dynamic micro-leakage state of the outer protective layer of the conveying pipeline.
Step 380: and forming a remote control and management for the direct-current voltage source and the monitoring point according to the multidimensional quantitative description data of the specific micro-leakage state.
And forming control data of the direct-current voltage source and the monitoring point position equipment for adjusting equipment parameters according to the judging conclusion data of the comprehensive dynamic micro-leakage state of the protective layer outside the conveying pipeline, so that the monitoring data is suitable for the micro-leakage state judging requirement.
The on-line monitoring method for the pipeline micro-leakage, disclosed by the embodiment of the invention, improves the system linkage function of on-line monitoring by establishing the storage, display, alarm, notification and remote control functions associated with the pipeline ground potential signal change judging process, can effectively monitor and manage the pipeline leakage state, and improves the pipeline operation safety and maintenance efficiency.
The pipeline micro-leakage on-line monitoring system according to one embodiment of the invention comprises:
the memory is used for storing program codes in the processing process of the pipeline micro leakage online monitoring method in the embodiment;
and the processor is used for executing the program codes in the processing process of the pipeline micro leakage online monitoring method in the embodiment.
The processor may employ a DSP (Digital Signal Processor) digital signal processor, an FPGA (Field-Programmable Gate Array) Field programmable gate array, a MCU (Microcontroller Unit) system board, a SoC (system on a chip) system board, an PLC (Programmable Logic Controller) minimum system including I/O, or a computing resource of an internet of things cloud platform.
An embodiment of the pipeline micro-leakage on-line monitoring system is shown in fig. 4. In fig. 4, the present embodiment includes:
the reference forming device 10 is used for forming an electric signal transmission loop between the conveying pipeline and the ground by utilizing the continuous conductive medium layer of the conveying pipeline and combining a voltage source, and forming a potential monitoring reference through the electric signal transmission loop;
the change acquisition device 20 is used for forming a monitoring point position set on the extending path of the conductive medium layer, and monitoring the change of the pipe ground potential signal between the corresponding position of the conveying pipeline and the ground by the monitoring point position;
and the state judging device 30 is used for judging the micro leakage state of the conveying pipeline according to the change of the pipe ground potential signal fed back by the monitoring point position.
As shown in fig. 4, in an embodiment of the present invention, the reference forming apparatus 10 includes:
a loop planning module 11, configured to plan a topology structure of the transport pipeline in the area to determine a transport pipeline branch and/or a local transport pipeline network for monitoring;
the circuit establishment module 12 is configured to set a direct current voltage source for a conductive medium layer branch or a local conductive medium layer network to form an electrical signal transmission circuit;
the loop control module 13 is used for feeding back potential monitoring reference data in the electric signal transmission loop and controlling and adjusting output parameters of the direct current voltage source.
As shown in fig. 4, in an embodiment of the present invention, the change acquisition device 20 includes:
the point position planning module 21 is configured to determine monitoring points according to geographic distribution characteristics of the branch and/or local pipeline network, and establish type attributes between the monitoring points;
the point position control module 22 is used for continuously collecting the ground potential signal of the pipe at the monitoring point position for feedback and controlled adjustment of the collection control parameters.
As shown in fig. 4, in an embodiment of the present invention, the state determining device 30 includes:
the data structuring module 31 is configured to receive the tube ground potential data fed back by each monitoring point location to form a tube ground potential change data sequence of each monitoring point location;
a micro-leakage judging module 32, configured to judge that leakage occurs around the monitoring point when the value change of the adjacent pipe ground potential in the pipe ground potential change data sequence meets a leakage rule;
the interval judging module 33 is used for judging a leakage interval according to the positioning rule when judging that the monitoring point leakage occurs;
the trend determination module 34 is configured to determine the leakage trend according to the change trend of the ground potential in the inner pipe and the geographic distribution characteristics of the adjacent monitoring points of the leakage occurrence monitoring points.
As shown in fig. 4, in an embodiment of the present invention, the state determining device 30 further includes:
the data service module 35 is used for forming storage and inquiry of a pipe ground potential change data sequence of each monitoring point location, and forming multi-dimensional quantized data of the micro leakage state of the conveying pipeline;
a data presentation module 36 for forming a data presentation of the micro-leakage state based on the multi-dimensional quantized data for the specific micro-leakage state;
a data triggering module 37 for forming alarms and notifications based on multi-dimensional quantitative description data for a specific micro-leakage state;
the device control module 38 is configured to remotely control and manage the dc voltage source and the monitoring point according to the multi-dimensional quantitative description data of the specific micro-leakage state.
An embodiment of the pipeline micro-leakage on-line monitoring system is shown in fig. 5. In fig. 5, the present embodiment includes:
and the transmitter 01 is used for outputting direct-current voltage to the conductive medium layer of the steel skeleton reinforced composite pipe forming the conveying pipeline in a controlled way, collecting potential monitoring reference data of an electric signal transmission loop formed between the conductive medium layer and the ground and feeding back the potential monitoring reference data to the monitoring platform.
The transmitter provides a dc voltage output for establishing a potential monitoring reference. The conductive medium layer of the steel skeleton reinforced composite pipe is formed into an electric signal transmission loop in the ground through a direct-current voltage source, and the electric potential monitoring reference of the conveying pipeline is stable and reliable through controlling the output amplitude of the direct-current voltage.
And the receiver 02 is used for controllably collecting the pipe ground potential signal between the conductive medium layer and the ground at the monitoring point position of the conveying pipeline and feeding back to the monitoring platform.
The receiver provides a potential sensor for acquiring the ground potential of the pipe between the specific length position of the conveying pipeline and the ground. And acquiring the pipe ground potential data of different length positions of the conveying pipeline by using the layout of the receiver.
The monitoring platform 03 is used for judging the micro leakage state according to the potential monitoring reference data and the pipe ground potential signal, and forming monitoring control according to the judging result.
The monitoring platform utilizes the platform resources of the Internet of things, respectively establishes a data transmission link with the transmitter and the receiver, and receives potential monitoring reference data and pipe-to-ground potential data in real time. Triggering of monitoring service and controlling of transmitter and receiver are carried out through the micro leakage state judging result.
The pipeline micro-leakage on-line monitoring system provided by the embodiment of the invention monitors the state of the protection layer micro-leakage aiming at the conveying pipeline with the supporting steel skeleton. The transmitter and the receiver form a flexible measurement structure for potential change between any position on the pipeline and the ground. The monitoring platform is used for collecting and judging the ground potential change data of the parallel pipes at any position of the conveying pipeline in real time. Compared with the prior art, the method has the advantages of higher monitoring sensitivity, modularized design, data processing and analysis capability, high-efficiency data transmission, alarming function and the like, can better meet the requirement of micro-damage monitoring of the steel skeleton reinforced composite pipe outer protective layer for fluid transportation, and improves the accuracy and reliability of monitoring.
As shown in fig. 5, in an embodiment of the present invention, a transmitter 01 includes:
the transmitter processor is used for controlling the communication link to send potential monitoring reference data and receiving the control data to control the direct-current voltage source;
the direct-current voltage source is used for connecting the grounding anode with the conductive medium layer of the conveying pipeline, and an electric signal transmission loop is formed between the conveying pipeline and the ground;
a grounded anode for providing a high potential;
the potential sensor module is used for collecting a pipe ground potential signal of a transmitter position in the electric signal transmission loop;
the analog-to-digital conversion module is used for converting the pipe ground potential signal into potential monitoring reference data;
the communication module is used for establishing a communication link between the control and the monitoring platform and transmitting and receiving data;
and the solar power supply module is used for providing working power supply.
The pipeline micro-leakage on-line monitoring system provided by the embodiment of the invention provides a modularized structure of a transmitter. The modules are communicated and data transmitted through standardized interfaces, and can be flexibly combined and expanded to meet different monitoring requirements.
As shown in fig. 5, in an embodiment of the present invention, the receiver 02 includes:
the receiver processor is used for controlling the communication link to send the monitoring data of the ground potential of the pipe and receiving the control data acquisition process;
a reference electrode for providing a high potential;
the potential sensor module is used for connecting a reference electrode and a lead of a conductive medium layer of a conveying pipeline and collecting a pipe ground potential signal;
the analog-to-digital conversion module is used for converting the pipe ground potential signal into pipe ground potential monitoring data;
the communication module is used for establishing a communication link between the control and the monitoring platform and transmitting and receiving data;
and the solar power supply module is used for providing working power supply.
The pipeline micro-leakage on-line monitoring system provided by the embodiment of the invention provides a modularized structure of a receiver. The modules are communicated and data transmitted through standardized interfaces, and can be flexibly combined and expanded to meet different monitoring requirements. The high-sensitivity potential acquisition module is adopted, so that the underground pipeline-ground potential can be measured with high precision, a micro leakage source can be found in time, and the monitoring accuracy and reliability are improved.
An exemplary architecture of the present invention is shown in fig. 6. In fig. 6, when the outer protective layer of the conveying pipeline is not damaged, the direct-current voltage source, the grounding anode, the pipeline and the ground form a stable voltage in the electric signal transmission loop, and the potential monitoring reference is reliable. When the outer protective layer of the conveying pipeline is damaged and a leakage point appears, the grounding resistance of the pipe section at the position of the leakage point is instantaneously reduced due to fluid overflow, the total resistance value of the system is reduced, the current of the system is increased, and the ground potential of the pipe at each monitoring point is reduced. The pipe ground potential signal abrupt change acquired by the potential sensor module of the receiver closest to the pipe section at the position of the leakage point is larger.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (10)
1. An on-line monitoring method for micro leakage of a pipeline is characterized by comprising the following steps:
forming an electric signal transmission loop between the conveying pipeline and the ground by utilizing the continuous conductive medium layer of the conveying pipeline and combining a voltage source, and forming a potential monitoring reference through the electric signal transmission loop;
forming a monitoring point position set on the extending path of the conductive medium layer, wherein the monitoring point position monitors the change of a pipe ground potential signal between the corresponding position of the conveying pipeline and the ground;
and judging the micro leakage state of the conveying pipeline according to the change of the pipe ground potential signal fed back by the monitoring point position.
2. The method for on-line monitoring of micro-leakage of a pipeline according to claim 1, wherein the forming of the electric signal transmission loop between the pipeline and the ground by using the continuous conductive medium layer of the pipeline in combination with the voltage source, and the forming of the electric potential monitoring reference by the electric signal transmission loop comprises:
planning the topological structure of the conveying pipelines in the area to determine conveying pipeline branches and/or local conveying pipeline networks for monitoring;
setting a direct-current voltage source for a conductive medium layer branch or a local conductive medium layer network to form an electric signal transmission loop;
and feeding back potential monitoring reference data in the electric signal transmission loop, and controlling and adjusting output parameters of the direct current voltage source.
3. The method for on-line monitoring of micro-leakage of a pipeline according to claim 1, wherein forming a monitoring point set on an extension path of the conductive medium layer, monitoring a pipeline ground potential signal change between a corresponding position of the conveying pipeline and the ground at the monitoring point comprises:
determining monitoring points according to the geographic distribution characteristics of the branch pipelines and/or the local pipeline network, and establishing type attributes among the monitoring points;
and continuously collecting the ground potential signal of the pipe at the monitoring point to feed back, and adjusting the collection control parameters under control.
4. The method for on-line monitoring of micro-leakage of a pipeline according to claim 1, wherein the determining the micro-leakage state of the pipeline according to the change of the pipeline ground potential signal fed back by the monitoring point comprises:
receiving the pipe ground potential data fed back by each monitoring point location to form a pipe ground potential change data sequence of each monitoring point location;
judging that peripheral leakage of the monitoring point occurs when the numerical variation of the adjacent pipe ground potential in the pipe ground potential variation data sequence accords with the leakage rule;
judging a leakage section according to a section positioning rule when judging that the monitoring point leakage occurs;
and judging the leakage trend according to the change trend of the ground potential in the inner pipe in the time sequence period of the adjacent monitoring points of the leakage occurrence monitoring points and the geographic distribution characteristics of the adjacent monitoring points.
5. The on-line monitoring method of pipeline micro-leakage according to claim 4, wherein the leakage rule comprises:
threshold rule: setting a pipe ground potential jump threshold value, and judging that the monitoring point position leakage occurs when the change value of the continuously adjacent pipe ground potential exceeds or is lower than the threshold value;
rate of change rule: judging that leakage occurs when the monotonic change rate of the tube ground potential value exceeds a set threshold value;
statistical rules: and determining the deviation of the post-stage pipe ground potential value according to the mean value or the variance of the pre-stage pipe ground potential value, and determining that leakage occurs when the deviation reaches a set threshold value.
6. The method for on-line monitoring of pipeline micro-leakage according to claim 4, wherein the interval locating rule comprises:
linear positioning rule: according to the fluctuation condition of the tube ground potential value in the tube ground potential change data sequence of the leakage occurrence monitoring point, establishing a fluctuation linear equation to calculate the approximate range of the leakage position corresponding to the tube ground potential fluctuation;
multi-point positioning rules: and calculating a specific interval of the leakage position by utilizing the pipe ground potential value of three or more monitoring points with the geographic position close to the leakage occurrence monitoring point according to the multipoint difference measurement principle.
Statistical localization rules: and forming a distance deviation judgment for mapping the later-stage pipe ground potential value according to the mean value or the variance of the earlier-stage pipe ground potential value of the leakage occurrence monitoring point, and calculating a leakage interval.
7. The on-line monitoring method of pipeline micro-leakage of claim 4, further comprising:
forming storage and inquiry of a tube ground potential change data sequence of each monitoring point position, and forming multi-dimensional quantized data of a micro leakage state of a conveying pipeline;
forming a data display of the micro-leakage state according to the multi-dimensional quantized data of the specific micro-leakage state;
forming an alarm and a notification according to the multidimensional quantitative description data of the specific micro leakage state;
and forming a remote control and management for the direct-current voltage source and the monitoring point according to the multidimensional quantitative description data of the specific micro-leakage state.
8. An on-line monitoring system for micro-leakage of a pipeline, comprising:
a memory for storing program code during the process of the pipeline micro leakage on-line monitoring method according to any one of claims 1 to 7;
and a processor for executing the program code.
9. An on-line monitoring system for micro-leakage of a pipeline, comprising:
the reference forming device is used for forming an electric signal transmission loop between the conveying pipeline and the ground by utilizing the continuous conductive medium layer of the conveying pipeline and combining a voltage source, and forming a potential monitoring reference through the electric signal transmission loop;
the change acquisition device is used for forming a monitoring point position set on the extending path of the conductive medium layer, and monitoring the change of a pipe ground potential signal between the corresponding position of the conveying pipeline and the ground by the monitoring point position;
and the state judging device is used for judging the micro leakage state of the conveying pipeline according to the change of the pipe ground potential signal fed back by the monitoring point position.
10. An on-line monitoring system for micro-leakage of a pipeline, comprising:
the transmitter is used for outputting direct-current voltage to the conductive medium layer of the steel skeleton reinforced composite pipe forming the conveying pipeline in a controlled way, collecting potential monitoring reference data of an electric signal transmission loop formed between the conductive medium layer and the ground and feeding back the potential monitoring reference data to the monitoring platform;
the receiver is used for controllably collecting a pipe ground potential signal between the conductive medium layer and the ground at a monitoring point position of the conveying pipeline and feeding back the pipe ground potential signal to the monitoring platform;
and the monitoring platform is used for judging the micro leakage state according to the potential monitoring reference data and the pipe ground potential signal and forming monitoring control according to the judging result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311050016.9A CN116906841A (en) | 2023-08-21 | 2023-08-21 | Pipeline micro-leakage on-line monitoring method and monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311050016.9A CN116906841A (en) | 2023-08-21 | 2023-08-21 | Pipeline micro-leakage on-line monitoring method and monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116906841A true CN116906841A (en) | 2023-10-20 |
Family
ID=88351203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311050016.9A Pending CN116906841A (en) | 2023-08-21 | 2023-08-21 | Pipeline micro-leakage on-line monitoring method and monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116906841A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1731200A (en) * | 2005-07-29 | 2006-02-08 | 陶亮 | Electrical measurement method for safety theft prevention of oil/gas pipe line |
| CN104061443A (en) * | 2014-07-01 | 2014-09-24 | 北京昊科航科技有限责任公司 | Pipeline safety pre-warning and leakage monitoring alarm method |
| CN105695997A (en) * | 2016-03-08 | 2016-06-22 | 陈久会 | Safety protection method for underground metal pipeline |
| CN107859878A (en) * | 2017-11-14 | 2018-03-30 | 于岚 | A kind of monitoring system of long petroleum pipeline |
| CN113686772A (en) * | 2021-09-13 | 2021-11-23 | 国机传感科技有限公司 | Comprehensive external detection device for buried steel long oil and gas pipeline |
-
2023
- 2023-08-21 CN CN202311050016.9A patent/CN116906841A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1731200A (en) * | 2005-07-29 | 2006-02-08 | 陶亮 | Electrical measurement method for safety theft prevention of oil/gas pipe line |
| CN104061443A (en) * | 2014-07-01 | 2014-09-24 | 北京昊科航科技有限责任公司 | Pipeline safety pre-warning and leakage monitoring alarm method |
| CN105695997A (en) * | 2016-03-08 | 2016-06-22 | 陈久会 | Safety protection method for underground metal pipeline |
| CN107859878A (en) * | 2017-11-14 | 2018-03-30 | 于岚 | A kind of monitoring system of long petroleum pipeline |
| CN113686772A (en) * | 2021-09-13 | 2021-11-23 | 国机传感科技有限公司 | Comprehensive external detection device for buried steel long oil and gas pipeline |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112036610A (en) | Intelligent cable early warning platform and early warning method based on big data analysis | |
| CN116308965B (en) | Intelligent gas underground gas pipe network safety management method, internet of things system and device | |
| CN107764336A (en) | A kind of pumping station operation state real time on-line monitoring and fault diagnosis system and method | |
| CN112990288A (en) | Online monitoring and fault prediction system for large equipment | |
| CN116539128B (en) | Intelligent fuel gas ultrasonic metering instrument accuracy diagnosis method and Internet of things system | |
| CN103512619A (en) | System and method for intelligently monitoring state information of transformer | |
| CN111121874A (en) | Water quality monitoring and evaluating system and method for water source area | |
| CN111022932A (en) | Sensor point distribution system and method for water supply pipe network | |
| CN214407469U (en) | Underground water information monitoring system | |
| CN114250471B (en) | Cathode protection potential follow-up control system under oil gas intelligent pipeline architecture | |
| CN110985892A (en) | Water supply pipe network monitoring system and method | |
| CN208654146U (en) | A kind of water monitoring device and system | |
| CN105258765A (en) | Dam body hydrostatic level in situ automatic monitoring system and method | |
| CN104731079A (en) | Oil field data monitoring system and method | |
| CN103899357A (en) | System and method for real-time visual monitoring and early warning of mine floor water disasters | |
| CN112485503B (en) | Stray current measuring system and method based on big data processing | |
| CN116006908A (en) | Intelligent gas pipe network reliability monitoring method and Internet of things system | |
| KR102113951B1 (en) | IoT-based real-time wireless water pressure meter and waterworks management system comprising it | |
| CN110852458A (en) | City pipe network supervision method based on big data | |
| CN110570628A (en) | Power transmission line pole tower geological disaster monitoring, early warning and analyzing system and using method | |
| CN116906841A (en) | Pipeline micro-leakage on-line monitoring method and monitoring system | |
| CN113240240A (en) | Offshore oilfield group power system reliability assessment system and method thereof | |
| CN204906010U (en) | Transmission line dynamic monitoring early warning system | |
| CN212107899U (en) | Underground pipe network system based on electronic imaging technology monitoring | |
| CN1472363A (en) | Zone negative electrode protective intelligent monitoring systems |
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 |