Ground potential measurement and early warning system for cathode protection pipe of long-distance transportation buried pipeline

Abstract

The utility model belongs to the technical field of data monitoring, and provides a long-distance transmission buried pipeline cathode protection pipe ground potential measurement early warning system, which comprises a monitoring center and a data signal acquisition end, and the monitoring center and the data signal acquisition end carry out data real-time transmission through a wireless transmission cloud platform. The data signal acquisition end comprises a wireless potential acquisition instrument and a wireless data acquisition instrument, a plurality of strong current cathode protection stations and a plurality of potential test piles are arranged on the whole pipeline, the wireless potential acquisition instruments are arranged on the potential test piles, and potential test cables of the wireless potential acquisition instruments extend into the ground through the potential test piles and are welded on the buried pipeline; the wireless data acquisition instrument is connected with a constant potential rectifier unit in the strong current cathode protection station to acquire operation parameters; according to the utility model, the on-line monitoring of the whole pipeline ground potential of the long-distance transportation buried pipeline is realized, the manual measurement error and the hysteresis of manual measurement are reduced, the manual measurement cost and the daily maintenance cost are saved, and the safety risk of manual measurement is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to data monitoring technical field relates to the monitoring of pipeline cathodic protection, and specifically relates to a long distance conveying buried pipeline cathodic protection pipe ground potential measurement early warning system. BACKGROUND

[0002] At present, many mines use long distance conveying buried pipelines, for example, the total length of the Jianshan iron ore concentrate conveying pipeline is 102.2km, which crosses Taiyuan and Gujiao cities, Loufan county, eighteen townships and fifty-four natural villages, passes through three riverside parks, crosses the second reservoir of the Fenhe River, and has a complex terrain environment along the way. The buried section is about 82.5km, the crossing section is about 2km, and the tunnel section is about 17km. The whole line adopts an external corrosion layer and a forced current cathodic protection combined protection, three forced current cathodic protection stations are arranged at 26km, 69km and 92.5km, and the tunnel section and the overhead section are not protected. The sectional protection uses an insulating short pipe for electrical insulation. The forced current cathodic protection system protects the pipeline by outputting current from a constant potential instrument, so as to ensure that the pipeline is at a negative potential. The daily point inspection of the constant potential instrument station of the system is performed by manual work three times a day, and the pipe ground potential is measured by manual work once a month. Once the constant potential instrument appears abnormal or stops, it cannot be found and disposed in time, and the abnormal value of the pipe ground potential cannot be found in time, so that the buried pipeline may appear protection interruption or over-protection and under-protection, and further cause abnormal corrosion of the pipeline which cannot be found in time, thereby threatening the normal operation of the pipeline.

[0003] Due to the long pipeline conveying distance and the complex external environment factors of the whole line, and the fact that the whole line is a mountain road, the pipe ground potential is measured by manual work, the time interval is long, the measurement of some positions is inconvenient, there are personnel safety risk factors, and the measurement of the potential by manual work uses a portable reference electrode, so that the human measurement error is large, and whether the cathodic protection system is normal and whether the external corrosion of the pipeline is in the normal protection range cannot be analyzed in time and accurately. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a long distance conveying buried pipeline cathodic protection pipe ground potential measurement early warning system, which uses a reference electrode buried in the moist soil near the pipeline for comparison, measures the pipe-to-ground potential by a wireless potential acquisition instrument, and transmits the measurement data to a master control upper computer and each mobile terminal in real time, so as to realize real-time monitoring of the pipe ground potential, find hidden problems in time and process them in time, ensure that the concentrate pipeline cathodic protection system operates normally, and the pipeline is always in the normal protection range.

[0005] The utility model adopts the technical scheme to realize the above-mentioned purpose:

[0006] The utility model relates an early warning system of long distance delivery buried pipeline cathode protection pipe ground potential measurement, including monitoring center and data signal collection end, monitoring center and data signal collection end carry out data real -time transmission through wireless transmission cloud platform, data signal collection end includes wireless potential collection appearance and wireless data collection appearance, and the pipeline whole line sets up a plurality of strong current cathode protection station and a plurality of potential test piles, sets up wireless potential collection appearance on each potential test pile, sets up a long -term reference electrode in the vicinity of the pipeline at each potential test pile, and the long -term reference electrode passes through electrode cable lead and connects the wireless potential collection appearance of potential test pile, and the potential test cable of wireless potential collection appearance passes through potential test pile and is welded on buried pipeline in the ground.

[0007] Further, the monitoring center includes a monitoring computer and a mobile terminal, and the monitoring computer and the mobile terminal acquire the data of the wireless potential collection appearance and the operating parameters of the constant potential instrument set through a cloud platform wireless gateway.

[0008] Further, the long-term reference electrode has the same buried depth as the pipeline.

[0009] Further, the strong current cathode protection station is further provided with a camera group for monitoring whether the constant potential instrument set is working normally.

[0010] The utility model has the advantages of:

[0011] The utility model realizes the online monitoring of the ground potential of the long distance delivery buried pipeline, reduces the human measurement error and the hysteresis of manual measurement, and can find and treat problems in time when the ground potential or the data of the constant potential instrument set is abnormal, so that the pipeline cathode protection system is kept in normal operation, and the pipeline is continuously protected.

[0012] The utility model saves the cost of manual measurement and the daily maintenance cost.

[0013] The utility model reduces the safety risk of manual measurement, avoids the entry of idle and miscellaneous personnel into the pipeline along the line, and effectively ensures the safety of the secret facilities and environment along the way. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the structure schematic diagram of the data network transmission early warning part of the utility model;

[0015] Figure 2 is the structure schematic diagram of the potential collection part in the utility model;

[0016] Figure 3 is the hardware parameter table of the wireless data collection appearance in the embodiment of the utility model;

[0017] Figure 4The hardware parameter table of the wireless potential acquisition instrument in the embodiment of the utility model;

[0018] Fig. 1, monitoring center; 11, monitoring computer; 12, mobile terminal; 2, data signal acquisition end; 21, wireless potential acquisition instrument; 22, wireless data acquisition instrument; 3, wireless transmission cloud platform; 4, pipeline; 5, potential test pile; 6, long-acting reference electrode; 7, electrode cable lead; 8, potential test cable; 9, constant potential instrument set. DETAILED DESCRIPTION

[0019] The utility model will be further described below in combination with the drawings and embodiments: EMBODIMENT

[0020] Taking the long-distance iron concentrate conveying pipeline of the company's iron mine as an example, the total length of the concentrate pipeline is 102.2 km.

[0021] The long-distance conveying buried pipeline cathodic protection pipeline ground potential measurement early warning system comprises a monitoring center 1 and a data signal acquisition end 2, and the monitoring center and the data signal acquisition end transmit data in real time through a wireless transmission cloud platform 3, as shown in Figure 1 、 2 .

[0022] The data signal acquisition end 2 comprises a wireless potential acquisition instrument 21 and a wireless data acquisition instrument 22, and the pipeline 4 is provided with three strong current cathodic protection stations and 98 potential test piles throughout the line, as shown in Figure 1 、 2 , a wireless potential acquisition instrument 21 is arranged on each potential test pile 5, a long-acting reference electrode 6 is buried near the buried pipeline 4 at each potential test pile 5, the buried depth of the long-acting reference electrode 6 is the same as the buried depth of the pipeline 4, the long-acting reference electrode 6 is connected to the wireless potential acquisition instrument 21 of the potential test pile 5 through the electrode cable lead 7, and the potential test cable 8 of the wireless potential acquisition instrument 21 is welded on the buried pipeline 4 by extending into the ground through the potential test pile 5; the electrode cable lead 7 and the potential test cable 8 are connected to the potential acquisition module of the wireless potential acquisition instrument 21; the strong current cathodic protection station comprises a constant potential instrument set 9, the wireless data acquisition instrument 22 is installed in the strong current cathodic protection monitoring station, is powered by commercial power, is connected with the constant potential instrument set 9, acquires the operating parameters of the constant potential instrument set 9, transmits the data processed through the built-in program to the monitoring computer of the monitoring center and the related mobile terminal, and displays an alarm when the data is abnormal; a camera group is also installed in the strong current cathodic protection monitoring station to monitor whether the constant potential instrument set works normally.

[0023] The wireless data acquisition instrument 22 has strong anti-interference capability and can directly read data and transmit the data to the wireless transmission cloud platform 3, and the specific parameters of the wireless data acquisition instrument 22 used in the embodiment are shown in the Figure 3 table.

[0024] The radio potential acquisition instrument 21 is built-in with a data transmission module, an acquisition module and an anti-low-temperature battery pack. The pipe ground potential collected by the acquisition module is transmitted to the data transmission module. The data transmission module processes the data by built-in program. The processed data is transmitted to the monitoring computer of the monitoring center and the related mobile terminal. When the data is abnormal, an alarm is displayed. The anti-low-temperature battery pack is built-in with two sets of voltage rising and falling systems and a timer module. The 5V voltage supplies power to the data transmission module, and the 12V voltage supplies power to the acquisition module. The timer starts each power supply system at intervals.

[0025] The radio potential acquisition instrument used in the embodiment has high collection accuracy and low power consumption. The instrument is powered by a battery and can be used in a low-temperature environment. The specific hardware parameters are shown in the table. Figure 4

[0026] The monitoring center 1 includes a monitoring computer 11 and a mobile terminal 12. The monitoring computer 11 and the mobile terminal 12 acquire the radio potential acquisition instrument data 21 and the operating parameters of the constant potential instrument set 9 connected with the radio data acquisition instrument 22 through the cloud platform wireless gateway 31 of the wireless transmission cloud platform 3. The monitoring computer 11 acquires the potential data of each monitoring point and the state of the constant potential instrument set 9 from the wireless transmission cloud platform 3, long-term saves in the database, displays the potential data change curve of the monitoring point, and analyzes. Once it is found that the potential exceeds the range or the state of the constant potential instrument set 9 is abnormal, an alarm is immediately displayed.

[0027] The system functions mainly include:

[0028] (1) Real-time reading of data uploaded from the monitoring node and writing into the local hard disk for long-term saving; processing, maintaining, abnormal alarm and change analysis of the data.

[0029] (2) Real-time and intuitive observation of the change of the potential of the monitoring point.

[0030] (3) Automatic generation of the change trend of the potential acquisition instrument in the specified time period, historical event statistics, and the required curve and chart for all the detected data.

[0031] (4) Analysis of the detected data, detailed display of the location of the fault point and printing of the report.

[0032] (5) The alarm limit value can be set according to the actual needs. The monitoring point reaching the early warning value and the over-limit value can be acousto-optically alarmed to display the specific location of the alarm point and record the case, realize the query of the history, and the early warning value and the alarm value of the monitoring point can be modified online, and the fault and alarm event of the sensor can be diagnosed and displayed online.

[0033] ​(6) When new equipment is included in the detection range, only the corresponding new equipment access is added, and the original system is not affected.

[0034] (7) Real-time monitoring and control data of the system equipment can be collected and converged, and the real-time running data information is uploaded to the monitoring center through network communication to accept the control operation instructions of the monitoring center and complete the target operation. The system also has an online remote parameter setting management function.

[0035] (8) The system supports network browsing and mobile phone functions, and the software operation is simple and easy to maintain. Non-professionals can configure and modify the system after slight training.

Claims

1. A long distance buried pipeline cathodic protection pipe ground potential measurement early warning system, characterized in that: The monitoring center and the data signal acquisition end are connected through a wireless transmission cloud platform for real-time data transmission; the data signal acquisition end comprises a wireless potential acquisition instrument and a wireless data acquisition instrument; a plurality of strong current cathode protection stations and a plurality of potential test piles are arranged along the pipeline; the wireless potential acquisition instrument is arranged on each potential test pile; a long-term reference electrode is arranged near the pipeline at each potential test pile; the long-term reference electrode is connected to the wireless potential acquisition instrument of the potential test pile through an electrode cable; the potential test cable of the wireless potential acquisition instrument is connected to the underground pipeline through the potential test pile.

2. The long distance buried pipeline cathodic protection pipe ground potential measurement early warning system according to claim 1, characterized in that: The monitoring center comprises a monitoring computer and a mobile terminal; the monitoring computer and the mobile terminal acquire the data of the wireless potential acquisition instrument and the operating parameters of the constant potential instrument through a cloud platform wireless gateway.

3. The long distance buried pipeline cathodic protection pipe ground potential measurement early warning system according to claim 1, characterized in that: The long-term reference electrode has the same buried depth as the pipeline.

4. The long distance buried pipeline cathodic protection pipe ground potential measurement early warning system according to claim 1, characterized in that: A camera group is further arranged in the strong current cathode protection station for monitoring the operating state of the constant potential instrument.

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