CN210860681U - System for be used for monitoring nonmetal pipeline and leak - Google Patents
System for be used for monitoring nonmetal pipeline and leak Download PDFInfo
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- CN210860681U CN210860681U CN201921414077.8U CN201921414077U CN210860681U CN 210860681 U CN210860681 U CN 210860681U CN 201921414077 U CN201921414077 U CN 201921414077U CN 210860681 U CN210860681 U CN 210860681U
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Abstract
The utility model relates to a pipeline leakage monitoring technology aims at providing a system for monitoring non-metallic pipeline leaks. The system comprises a resistance value detection module, an axial monitoring electrode and a circumferential monitoring electrode, wherein the axial monitoring electrode is axially arranged right below the outer side of the pipeline, and the circumferential monitoring electrode is arranged on the wall of the pipeline and can be contacted with a conveying medium; one end of the axial monitoring electrode is sequentially connected with the resistance value detection module and the annular monitoring electrode through a lead, and the annular monitoring electrode and a wiring terminal thereof are insulated from the axial monitoring electrode and the pipeline installation environment; the resistance value detection module is connected with the communication module through a signal wire, the communication module is connected with the leakage analysis module in a wired or wireless communication mode, and the leakage analysis module is used for judging whether pipeline leakage occurs according to the change of resistance monitoring data uploaded by the communication module. The utility model discloses the check out test set who adopts is simple, does not need complicated check out test set, and test method easily realizes, has reduced non-metallic pipeline leakage monitoring's cost.
Description
Technical Field
The utility model relates to a pipeline leakage monitoring technology, in particular to a system for be used for monitoring non-metallic pipeline and leak.
Background
The pipeline is the core facility for energy and water delivery, and is the life line vital to national economic development and human survival. With the adjustment of energy structures in China and the acceleration of urbanization processes, nonmetal pipelines are widely applied to national major projects, such as high-pressure jumper pipes in the fields of mudflats and shallow sea petroleum industry, gas conveying pipelines in urban gas pipe networks, cooling water circulating pipelines in nuclear power plants, and ideal substitutes for oil well water injection pipes and shallow sea medium-low pressure marine hoses. China has become the country with the largest non-metal pipeline yield and demand, and the application prospect is very wide.
The nonmetal pipeline has wide application occasions, complex and severe service environment and is easy to be subjected to external loads generated by terrain change and natural disasters. In actual use, resource waste and safety accidents caused by the leakage of the non-metal pipeline occur continuously. According to statistics, the water loss of the urban water supply network in China reaches 21.5 percent, and the water loss of some northern cities even reaches about 40 percent. Wherein the water loss caused by the leakage of the pipeline accounts for about 50 percent, which causes serious water resource waste. The non-metal pipeline for oil and gas transmission has high pressure and large caliber, and the leakage of the pipeline not only causes power waste and environmental pollution, but also threatens the life and property safety of people.
In order to solve the problems of resource waste and safety accidents caused by pipeline leakage, a pipeline leakage monitoring system needs to be built to monitor the leakage state of the pipeline in real time, find and eliminate hidden troubles of pipeline leakage as soon as possible, reduce the operation and maintenance cost of the pipeline, reduce the waste of resources, and improve the safety and the service life of the pipeline. The current pipeline leakage monitoring method mainly comprises the following steps: acoustic wave detection techniques and fiber optic detection techniques. The acoustic detection technology is used for monitoring and positioning leakage according to the propagation rule of acoustic waves in a medium. For a metal pressure pipeline, once the pipeline leaks, a medium flows out from a leakage point at a certain speed due to the action of the pressure difference between the inside and the outside of the pipeline to form jet flow, so that sound waves are generated at the leakage point. The method has been successfully applied to metal pipelines, but in non-metal pipelines, the attenuation speed of sound waves in non-metal (plastic) materials is high, the propagation distance is short, and the system construction cost is high. The method is greatly interfered by external noise, and more false alarms are generated, so that the acoustic wave detection technology cannot be applied to leakage of the non-metal pipeline. In the optical fiber detection technology, because optical fiber signals are difficult to decouple under the influence of temperature and strain factors, and optical fiber materials are easy to break and need special maintenance, the application of the optical fiber detection technology is limited. Therefore, an effective leakage monitoring technology is not available in the leakage monitoring of the non-metal pipeline.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is, overcome not enough among the prior art, provide a system for monitoring non-metallic pipe leakage.
In order to solve the technical problem, the utility model discloses a solution is:
the system for monitoring the leakage of the non-metal pipeline comprises a resistance value detection module; further comprising: the device comprises an axial monitoring electrode and a circumferential monitoring electrode, wherein the axial monitoring electrode is axially arranged right below the outer side of the pipeline, the circumferential monitoring electrode is arranged on the wall of the pipeline and can be contacted with a conveying medium, one end of the axial monitoring electrode is sequentially connected with a resistance value detection module and the circumferential monitoring electrode through a lead, and the circumferential monitoring electrode and a wiring terminal of the circumferential monitoring electrode are insulated from the axial monitoring electrode and the pipeline installation environment; the resistance value detection module is connected with the communication module through a signal wire, the communication module is connected with the leakage analysis module in a wired or wireless communication mode, and the leakage analysis module is used for judging whether pipeline leakage occurs according to the change of resistance monitoring data uploaded by the communication module. (the pipeline installation environment refers to the condition that the pipeline is laid in soil or other media, and insulation between the annular monitoring electrode and the terminal thereof and the soil or other media is ensured at the moment.)
As an improvement, the axial monitoring electrode is a strip electrode, a wire electrode or a plate electrode.
As an improvement, the axial monitoring electrode is fixed right below the outer side of the pipeline in an adhesive manner; or the axial monitoring electrode is directly laid right below the pipeline, and the distance between the axial monitoring electrode and the pipeline is not more than 0.5 m.
As an improvement, the annular monitoring electrode is arranged at any annular position with the axial distance from the wiring terminal of the axial monitoring electrode within the range of 0-50 cm.
As an improvement, the circumferential monitoring electrode is a strip electrode, a linear electrode, a plate electrode or a cylindrical electrode.
As an improvement, the annular monitoring electrode is fixed on the pipeline wall by any one of the following modes:
(1) fixing the annular monitoring electrode inside the bolt with the inner hole, and then sealing the inner hole; punching a hole in the wall of the pipeline, and installing a bolt into the hole;
(2) the annular monitoring electrode is embedded in the inner side of the pipeline wall and is communicated with an internal lead of the electric melting pipe fitting embedded with the resistance wire;
(3) the annular monitoring electrode is fixed on the inner side of the pipeline wall in a hot melting welding mode;
(4) the wall of the pipeline is perforated, an annular monitoring electrode is inserted into the inner side of the exposed pipeline wall through the hole, and the hole is sealed by melting plastic through a hot melting gun.
As an improvement, the system comprises a plurality of parallel subsystems, each subsystem comprises a group of axial monitoring electrodes, a group of annular monitoring electrodes, a resistance value detection module and a communication module, and the subsystems are respectively connected to the leakage analysis module through the communication modules; the axial monitoring electrodes in each subsystem are sequentially arranged end to end, and corresponding annular monitoring electrodes are arranged at any annular position within the range of 0-50 cm away from the axial distance of the wiring end of the axial monitoring electrode.
Based on the utility model discloses, can realize the monitoring of non-metallic pipeline leakage according to following method, include: the resistance value detection module detects the resistance value between the axial monitoring electrode and the annular monitoring electrode in real time and enables the resistance value data to be storedThe data is transmitted to a leakage analysis module through a communication module; the leakage analysis module receives the measured resistance value RmWith a predetermined characteristic value RsComparing; if R ism>RsThe pipeline system has no leakage; if R ism<RsLeakage exists in the pipeline system; if leakage exists, the leakage analysis module outputs a monitoring result and simultaneously gives out a warning to indicate that leakage exists.
The preset characteristic value RsThe value is determined in any one of the following ways:
(1) characteristic value RsIs the insulation resistance of the non-metal pipeline to be monitored;
(2) after the non-metal pipeline and the monitoring system are installed, measuring the resistance value of the monitoring system by using a high resistance meter, and taking 10% of the measured resistance as a characteristic value Rs；
(3) For the SDR11 PE100 gas pipeline with the wall thickness exceeding 10mm, a characteristic value R is takensIs 200 M.OMEGA..
Under the condition that a plurality of parallel subsystems are provided, the leakage analysis module sends out a warning to prompt that the corresponding subsystem leaks while outputting a monitoring result, so that a leakage point is confirmed to belong to a certain specific pipe section.
Description of implementation principle:
the surface material of the non-metal pipeline is an insulating material, when the pipeline does not leak, the axial monitoring electrode arranged along the axial direction of the pipeline and the annular monitoring electrode inserted into the pipeline are in an insulating state, and the resistance value measured by the resistance value detection module is very large and is usually more than 1000M omega. When the pipeline leaks, the leaked part of fluid flows to the axial monitoring electrode below the pipeline along the outer wall surface of the pipeline, and because fluid media such as water have conductivity, the fluid in the pipeline and the leaked fluid enable the axial monitoring electrode and the annular monitoring electrode to be conducted to form a loop, the resistance value measured by the resistance value detection module is obviously reduced, and the leakage of the media generated by the pipeline is monitored. The resistance value signal measured by the resistance value detection module is transmitted to the leakage analysis module through the communication module, and the leakage analysis module judges whether pipeline leakage occurs according to the change of the received resistance value.
Because the resistance value measured by the resistance value detection module can be obviously reduced when the pipeline leaks, in order to judge whether the pipeline leaks, a characteristic value R needs to be setsA resistance value R measured by the resistance value detection modulemAnd the characteristic value RsIn contrast, when the resistance value R ismGreater than the characteristic value RsWhen the pipeline is not leaked, the pipeline is considered to be not leaked; when the resistance value R ismLess than the characteristic value RsWhen a leak occurs in a pipe, the characteristic value R can be generally usedsThe insulation resistance of the nonmetal pipeline to be monitored can be set, or the insulation resistance can be measured by adopting a high resistance meter after the plastic pipeline and the monitoring system are installed, and 10 percent of the measured resistance is taken as a characteristic value RsFor SDR11 PE100 gas pipeline with wall thickness of 10mm, R can be takensIs 200 M.OMEGA..
In the utility model, the axial monitoring electrode is fixed on the outer wall surface of the pipeline in an adhesive way, and the electrode is arranged at the lowest side position of the outer wall surface of the pipeline; or when the axial monitoring electrode is directly laid along the pipeline, the electrode should be arranged right below the pipeline; after the installation is finished, good insulativity between the annular monitoring electrode and the annular monitoring electrode is ensured. Therefore, when the pipeline leaks at any position in the annular direction, the leaked part of fluid flows to the axial monitoring electrode below the pipeline along the outer wall surface of the pipeline, the axial monitoring electrode and the annular monitoring electrode are conducted to form a loop by the fluid leaked from the pipeline and the fluid in the pipeline, the resistance value measured by the detection circuit is obviously reduced, and the medium leakage generated by the pipeline is monitored.
The utility model discloses in, can constitute a subsystem with axial monitoring electrode, hoop monitoring electrode, resistance value detection module and communication module. Such subsystems may be arranged in plurality along the pipeline segment, each subsystem being responsible for pipeline leakage monitoring within its range of arrangement to accommodate the accuracy requirements of pipeline system leakage monitoring. The leakage analysis module can simultaneously receive monitoring data transmitted by a plurality of leakage monitoring subsystems, judge whether pipeline leakage occurs or not according to the received resistance value and judge which pipeline section the leakage point belongs to is covered by which leakage monitoring subsystem.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) sound wave and optical fiber detection technique in the past are difficult to be applied to the leakage monitoring of non-metallic pipe way, the utility model provides a fluid medium that produces in the non-metallic pipe way system can effectively be monitored to monitoring system based on resistance leaks, has solved the problem of non-metallic pipe way leakage monitoring difficulty.
(2) The utility model discloses a leakage monitoring system can arrange a plurality ofly along the pipeline segmentation according to pipeline monitoring precision demand, and each system is responsible for its pipeline leakage monitoring of arranging the within range, adapts to pipeline system leakage monitoring's precision demand.
(3) Compare in other leakage monitoring technique, the utility model discloses the check out test set who adopts is simple, does not need complicated check out test set, and test method easily realizes, has reduced non-metallic pipeline leakage monitoring's cost.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a flow chart for implementing a leak determination using the present invention;
fig. 3 is a schematic diagram of a leak test process in the embodiment.
Reference numerals: 1, a non-metal pipeline; 2, a circumferential monitoring electrode; 3 axial monitoring electrode; 4 a resistance value detection module; 5, a communication module; 6 a leak analysis module.
Detailed Description
What need explain at first, the utility model provides a leakage analysis module is a hardware product that has calculation function, and optional equipment includes singlechip, PLC module, computer etc. and its analysis calculation function is realized by embedded or the software function module of installing in equipment. The applicant believes that, after having read this application for patent, and having fully understood the principles and objects of the invention, it is fully possible for a person skilled in the art, in combination with the prior art, to utilize the software programming skills he grasps to implement the invention.
The accompanying drawings show various schematic diagrams of the non-metal pipeline monitoring system and method of the present invention. Wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of the respective components and the relative sizes and positional relationships therebetween shown in the drawings are merely exemplary.
The system for monitoring the leakage of the non-metallic pipeline is shown in figure 1 and comprises a resistance value detection module 4, an axial monitoring electrode 3 which is axially arranged right below the outer side of the non-metallic pipeline 1 and a circumferential monitoring electrode 2 which is arranged on the wall of the pipeline and can be contacted with a conveying medium, wherein one end of the axial monitoring electrode 3 is sequentially connected with the resistance value detection module 4 and the circumferential monitoring electrode 2 through a lead, and the circumferential monitoring electrode 2 and the axial monitoring electrode 3 are insulated from each other; the resistance value detection module 4 is connected with a communication module 5 through a signal wire, and the communication module is connected with a leakage analysis module 6 in a wired or wireless communication mode; and the leakage analysis module 6 is used for judging whether pipeline leakage occurs according to the change of the resistance monitoring data uploaded by the communication module 5.
The system can comprise a plurality of parallel subsystems, the subsystems can be arranged along the pipeline sections, and each system is responsible for pipeline leakage monitoring within the arrangement range of the subsystem so as to meet the precision requirement of pipeline system leakage monitoring. Each subsystem comprises a group of axial monitoring electrodes 3, a group of annular monitoring electrodes 2, a resistance value detection module 4 and a communication module 5, and the axial monitoring electrodes, the annular monitoring electrodes, the resistance value detection module 4 and the communication module 5 are respectively connected to a leakage analysis module 6 through the communication module 5; the axial monitoring electrodes 3 in each subsystem are sequentially arranged end to end, and corresponding annular monitoring electrodes 2 are arranged at any annular position within the range of 0-50 cm away from the axial distance of the wiring end of the axial monitoring electrode 3.
The axial monitoring electrode 3 can be a strip electrode, a linear electrode or a plate electrode and is fixed right below the outer side of the pipeline in an adhesive mode; or the axial monitoring electrode 3 is directly laid right below the pipeline, and the distance between the axial monitoring electrode and the pipeline is not more than 0.5 m. The annular monitoring electrode 2 can be a strip electrode, a linear electrode, a plate electrode or a cylindrical electrode and is arranged at any annular position with the axial distance from the wiring end of the axial monitoring electrode 3 within the range of 0-50 cm. The arrangement mode can be any one of the following modes: (1) the annular monitoring electrode 2 is fixed inside the bolt with the inner hole, and then the inner hole is sealed; punching a hole in the wall of the pipeline, and installing a bolt into the hole; (2) the annular monitoring electrode 2 is embedded in the inner side of the pipeline wall and is communicated with an internal lead of the electric melting pipe fitting embedded with the resistance wire; (3) the annular monitoring electrode 2 is fixed on the inner side of the pipeline wall in a hot melting welding mode; (4) the pipe wall is perforated, the annular monitoring electrode 2 is inserted through the hole until the inner side of the pipe wall is exposed, and then the hole is sealed by melting plastic with a hot melting gun.
The resistance value detection module 4 is connected with the two monitoring electrodes and measures the resistance value between the two monitoring electrodes. When the non-metal pipeline 1 leaks, the two monitoring electrodes are conducted by the leaked liquid medium to form a loop, and the resistance value measured by the resistance value detection module 4 is obviously reduced; the resistance value detection module 4 can select commercially available resistance measurement products (such as a multimeter or a high-impedance meter with the range of 5-10M omega), and can also package a simple resistance measurement circuit as the resistance value detection module 4; even the resistance measuring circuit and the communication module can be packaged in one hardware device together, so that the cost of hardware products is reduced, and the installation procedure is reduced.
Utilize the system realizes the monitoring of non-metallic pipe leakage, and its process includes: the resistance value detection module 4 detects the resistance value between the axial monitoring electrode 3 and the annular monitoring electrode 2 in real time, and transmits resistance value data to the leakage analysis module 6 through the communication module 5; the leakage analysis module 6 measures the received resistance value RmWith a predetermined characteristic value RsComparing; if R ism>RsThe pipeline system has no leakage; if R ism<RsLeakage exists in the pipeline system; the characteristic value R can be generally setsThe insulation resistance of the nonmetal pipeline to be monitored can be set, or the insulation resistance can be measured by adopting a high resistance meter after the plastic pipeline and the monitoring system are installed, and 10 percent of the measured resistance is taken as a characteristic value RsFor SDR11 PE100 gas pipeline with wall thickness of 10mm, R can be takensIs 200 M.OMEGA.. If leakage exists, the leakage analysis module 6 outputs a monitoring result and simultaneously gives out a warning to prompt storageIn the event of a leak. Under the condition that a plurality of parallel subsystems are provided, the leakage analysis module 6 sends out a warning to prompt that the corresponding subsystem leaks while outputting a monitoring result, so that a leakage point is confirmed to belong to a certain specific pipe section.
Fig. 1 illustrates the monitoring principle of the present invention. The surface material of the non-metal pipeline 1 is an insulating material, when the pipeline does not leak, the axial monitoring electrode 3 arranged along the axial direction of the pipeline and the annular monitoring electrode 2 inserted into the pipeline are in a non-conducting state, and the resistance value measured by the resistance value detection module 4 is very large and is usually more than 1000M omega. When the pipeline leaks, the leaked part of fluid flows to the axial monitoring electrode 3 below the pipeline along the outer wall surface of the pipeline, and because fluid media such as water have conductivity, the fluid in the pipeline and the leaked fluid enable the axial monitoring electrode 3 and the annular monitoring electrode 2 to be conducted to form a loop, the resistance value measured by the resistance value detection module 4 is obviously reduced to be below 10M omega, and therefore the medium leakage generated by the pipeline is monitored.
The resistance value signal measured by the resistance value detection module 4 is transmitted to the leakage analysis module 6 through the communication module 5, and the latter judges whether the pipeline leakage occurs according to the received resistance value.
Fig. 2 shows and utilizes the utility model discloses a leakage monitoring system realizes leakage analysis and handles flow chart, includes following steps:
(1) the leakage analysis module 6 receives the measured resistance value R transmitted by the communication module 5m；
(2) The leakage analysis module 6 will measure the resistance value RmAnd a characteristic value RsComparing;
(3) if R ism>RsIf the pipeline system has no leakage, the monitoring system displays that the pipeline runs normally and has no leakage, and the step (6) is directly carried out to output the monitoring result;
(4) if R ism<RsIndicating that a leakage exists in the pipeline system;
(5) if the system has a plurality of leakage monitoring and data transmission systems, the leakage analysis module 6 confirms which pipe section the leakage point belongs to which leakage monitoring and data transmission system covers;
(6) outputting a system monitoring result;
(7) and (4) returning to the step (1) to process the next measurement data.
The following embodiments are provided to illustrate the technical solutions of the present invention more clearly, and should not be construed as limiting the scope of the present invention. All of the measuring elements and material devices in the examples are available from published commercial sources.
The test pipeline is a DN110 high-density polyethylene pipeline, and the filling medium is water. The axial monitoring electrode 3 adopts a copper strip electrode, and the electrode is fixed at the lowest position of the outer wall surface of the non-metal pipeline 1 along the axial direction by adopting a pasting method. One is drilled at the position of the end part of the axial monitoring electrode 3 which rotates 180 degrees along the circular direction
The circumferential monitoring electrode 2 made of copper is inserted into the pipeline through the hole, so that the circumferential monitoring electrode 2 is in direct contact with fluid media in the pipeline, and the hole is sealed to prevent media leakage. The resistance value detection module 4 adopts a universal meter, is connected with the axial monitoring electrode 3 and the annular monitoring electrode 2 through leads, and measures the resistance value between the two monitoring electrodes.
The implementation case realizes monitoring according to the following steps:
(1) arranging a monitoring electrode and a universal meter according to the arrangement shown in figure 1, wherein the medium filled in the pipeline is water;
(2) when the pipeline does not leak, a universal meter (the maximum measuring resistance is 200M omega) is adopted to measure the resistance value between the axial monitoring electrode 3 and the annular monitoring electrode 2, the measuring result shows that the resistance value exceeds the measuring range and is recorded as R0；
(3) As shown in figure 3, a hole A is drilled on the pipeline at a position 100cm away from the annular monitoring electrode (the axial distance between the point A and the annular monitoring electrode), pipeline leakage is simulated, water leaked from the point A flows to the axial monitoring electrode 3 arranged at the lowest side of the pipeline along the outer wall surface of the pipeline, and the leaked water and the water in the pipeline are axially monitoredThe electrode 3 is connected with the annular monitoring electrode 2 to form a conducting loop; measuring the resistance value between the axial monitoring electrode 3 and the annular monitoring electrode 2 by adopting a universal meter, and recording the measurement result as RA；
(4) After the point A is measured, sealing the point A by using glue to eliminate leakage;
(5) similarly, drilling holes at points B and C respectively to generate water medium leakage and simulate pipeline leakage; the distance between the two points B, C and the resistance measured at the time of leakage were recorded as RBAnd RC；
(6) The resistance values when the pipe was not leaking and the distances of the A, B and C three leak simulation points and the measured resistance values when leaking were recorded as shown in Table 1; when leakage does not occur, the axial monitoring electrode 2 and the annular monitoring electrode 3 are in a disconnected state, and the resistance R is measured0Over range (>200M Ω); when leakage occurred, the resistance values measured at A, B and the three leakage simulation points C were 4.29 M.OMEGA., 3.06 M.OMEGA., and 2.14 M.OMEGA.
TABLE 1 distance of leakage simulation points and measured resistance value at the time of leakage
The test result of the simulated leakage experiment shows that after the pipeline leaks, the axial monitoring electrode 3 and the annular monitoring electrode 2 are connected together by the leaked aqueous medium to form a conduction loop, and the measured resistance value between the axial monitoring electrode 3 and the annular monitoring electrode 2 is obviously reduced; and the closer the leakage point is to the annular monitoring electrode, the smaller the measured resistance value is. Therefore, the utility model provides a pipeline leakage monitoring system and method can monitor the fluid medium leakage that non-metallic pipeline produced effectively, solve non-metallic pipeline leakage monitoring's a difficult problem.
Claims (7)
1. A system for monitoring leakage of a non-metallic pipeline comprises a resistance value detection module; it is characterized by also comprising: the device comprises an axial monitoring electrode and a circumferential monitoring electrode, wherein the axial monitoring electrode is axially arranged right below the outer side of the pipeline, the circumferential monitoring electrode is arranged on the wall of the pipeline and can be contacted with a conveying medium, one end of the axial monitoring electrode is sequentially connected with a resistance value detection module and the circumferential monitoring electrode through a lead, and the circumferential monitoring electrode and a wiring terminal of the circumferential monitoring electrode are insulated from the axial monitoring electrode and the pipeline installation environment; the resistance value detection module is connected with the communication module through a signal wire, the communication module is connected with the leakage analysis module in a wired or wireless communication mode, and the leakage analysis module is used for judging whether pipeline leakage occurs according to the change of resistance monitoring data uploaded by the communication module.
2. The system of claim 1, wherein the axial monitoring electrode is a strip electrode, a wire electrode, or a plate electrode.
3. The system of claim 1, wherein the axial monitoring electrode is adhesively secured directly beneath the outside of the pipe; or the axial monitoring electrode is directly laid right below the pipeline, and the distance between the axial monitoring electrode and the pipeline is not more than 0.5 m.
4. The system of claim 1, wherein the circumferential monitoring electrode is disposed at any circumferential position having an axial distance from a terminal of the axial monitoring electrode in the range of 0-50 cm.
5. The system of claim 1, wherein the circumferential monitoring electrode is a strip electrode, a wire electrode, a plate electrode, or a cylindrical electrode.
6. The system of claim 1, wherein the circumferential monitoring electrode is affixed to the pipeline wall by any one of:
(1) fixing the annular monitoring electrode inside the bolt with the inner hole, and then sealing the inner hole; punching a hole in the wall of the pipeline, and installing a bolt into the hole;
(2) the annular monitoring electrode is embedded in the inner side of the pipeline wall and is communicated with an internal lead of the electric melting pipe fitting embedded with the resistance wire;
(3) the annular monitoring electrode is fixed on the inner side of the pipeline wall in a hot melting welding mode;
(4) the wall of the pipeline is perforated, an annular monitoring electrode is inserted into the inner side of the exposed pipeline wall through the hole, and the hole is sealed by melting plastic through a hot melting gun.
7. The system according to claim 1, wherein the system comprises a plurality of parallel subsystems, each subsystem comprises a group of axial monitoring electrodes, a group of circumferential monitoring electrodes, a resistance value detection module and a communication module, and the subsystems are respectively connected to the leakage analysis module through the communication module; the axial monitoring electrodes in each subsystem are sequentially arranged end to end, and corresponding annular monitoring electrodes are arranged at any annular position within the range of 0-50 cm away from the axial distance of the wiring end of the axial monitoring electrode.
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| CN201921414077.8U CN210860681U (en) | 2019-08-28 | 2019-08-28 | System for be used for monitoring nonmetal pipeline and leak |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110578872A (en) * | 2019-08-28 | 2019-12-17 | 诸暨市逍遥管道科技有限公司 | A system and method for monitoring non-metallic pipeline leakage |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110578872A (en) * | 2019-08-28 | 2019-12-17 | 诸暨市逍遥管道科技有限公司 | A system and method for monitoring non-metallic pipeline leakage |
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