WO2009019717A1 - Système de protection cathodique intelligent (icap) - Google Patents

Système de protection cathodique intelligent (icap) Download PDF

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Publication number
WO2009019717A1
WO2009019717A1 PCT/IN2008/000154 IN2008000154W WO2009019717A1 WO 2009019717 A1 WO2009019717 A1 WO 2009019717A1 IN 2008000154 W IN2008000154 W IN 2008000154W WO 2009019717 A1 WO2009019717 A1 WO 2009019717A1
Authority
WO
WIPO (PCT)
Prior art keywords
icap
itu
cathodic protection
microcontroller
protection system
Prior art date
Application number
PCT/IN2008/000154
Other languages
English (en)
Inventor
Bala G Reddy
Original Assignee
Icsa India Limited
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Icsa India Limited filed Critical Icsa India Limited
Publication of WO2009019717A1 publication Critical patent/WO2009019717A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/04—Controlling or regulating desired parameters
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
    • C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
    • C23F13/22—Monitoring arrangements therefor

Definitions

  • ICAP INTELLIGENT CATHODIC PROTECTION SYSTEM
  • the present invention relates to intelligent cathodic protection system (icap) for continuously monitoring several test stations and notifying the status of the pipelines to soil potentials (PSP).
  • icap intelligent cathodic protection system
  • Effective corrosion control can extend the life of pipelines.
  • the increased risk of pipeline failure far outweighs the costs associated with installing, monitoring and maintaining corrosion control systems like iCAP system. Preventing pipeline deteriorations and failures, saves money, preserves the environment and protect public safety.
  • the pipeline is being used for transporting of Oil, Gas, and Water and other substances.
  • the pipelines pass through many states and some times many countries are called cross country pipelines. Taking regular measurements on a cross country pipeline by conventional manual methods are not possible.
  • the pipelines are protected from corrosion by sending continuous current to counter act the corrosion current. Taking of regular measurements at established test stations are imperative to know the corrosion threats. Otherwise, corrosion will eat away the pipe and industry incurs huge loss due to several devastations. Therefore, real time monitoring and notification of corrosion threats is necessary for improving productivity and safety.
  • the conventional measuring stations/points would be established as per the design norms across the cross country pipeline.
  • the pipeline is being buried around 2 to 5 m in the soil.
  • the conventional measurements are taken with respect to surface reference points of half cells.
  • the distance between the pipeline and reference point is around 2 to 5 m. Therefore, the external IR drop/stray current will influence the conventional measurements.
  • the conventional measurements are erroneous and not reliable.
  • the conventional measurements are expensive and time consuming. It will not notify the corrosion threat continuously. As a result, the pipelines fail and consequences are very high. It leads to devastations like loss of life, contamination of environment, damage of property.
  • iCAP intelligent cathodic protection
  • the iCAP (intelligent cathodic protection) system (Figure 1) is an intelligent embedded real time and field compatible system, which improves the efficiency of conventional CP (cathodic protection).
  • the system is having several significant features. It detects and notifies in real time the pilferages/Tamperings/third party damages, improves the life and safety of pipeline, and maintains statutory requirements. It is an economically viable system.
  • the iCAP system automatically acquires data from various test lead points, transformer rectifier units and other stations spread over along the pipeline.
  • the real time notifications include the rate of corrosion, aonormalities due to pilferages, and any deviation from statutory requirements. It has in-built powerful integrated data transmission facilities to support various modes of transmissions. It has in-built security facilities to tackle various unforeseen problems.
  • an intelligent cathodic protection system for continuously monitoring several test stations and notifying the status of the pipelines to soil potentials (PSP) comprising of: ITU-TR modules ITU-Midpoint ITU-TLP
  • the ITU-TR module is interfaced to the based station via GSM network and comprises of
  • An intelligent cathodic protection system for continuously monitoring several test stations and notifying the status of the pipelines to soil potentials
  • PSP PIC18f452 which is a 40-pin DIP microcontroller from Microchip;
  • An intelligent cathodic protection system as described above wherein the Battery Pack of midpoint ITU comprises of four number of Lithium Thyonil Chloride batteries of Ultracell of 3.6 volts 38AH battery which are used to make Power whole unit.
  • An intelligent cathodic protection system as described above, wherein, two series combination of these batteries as claimed in claim 3 are put in parallel to achieve 7.2volts, 38x2AH and 3.6volts, 38x2AH wherein the 3.6 volts is used for powering up the microcontroller, isolator and the driver for the I-modem while 7.2 volts is used for charging the modem battery.
  • An intelligent cathodic protection system as described above, wherein the ISOLATOR is a DPDT relay used for isolation of the input and the microcontroller and whenever the data has to be read this relay is made on momentarily and once the data is acquired this relay is made off.
  • An intelligent cathodic protection system as described above, wherein the microcontroller's analog channel is protected from sudden raise of input signal through an appropriate zener diode.
  • An intelligent cathodic protection system as described above, wherein the reference electrodes is of borin -Stelth-Cu-CuSo 4 having a diameter of 3.81mm and length 152mm.
  • An intelligent cathodic protection system as described above, wherein the system architecture of the base station utilizes a standard multi-tier architecture including a central database for the storage and management of all meter readings, load profile, and meter configuration data and an application tier, which provides processing power to accomplish, automated, scheduled, and ad-hoc requests from the client tier
  • the Mid-point ITU was interfaced to the base station through GSM network. It also interfaced to the reference electrodes and pipeline.
  • Figure 3 shows the block diagram. The description of each block is as follows:
  • PIC18f452 is a 40-pin DIP microcontroller from Microchip.
  • the operating frequency of this device is DC-40 MHz.
  • the maximum speed is 10 MIPS.
  • the microcontroller is operated at 20 MHz.
  • BATTERY PACK Four number of Lithium Thyonil Chloride batteries of Ultracell of 3.6 volts 38AH battery are used to make Power whole unit ( Figure 3). Two series combination of these batteries are put in parallel to achieve 7.2volts, 38x2AH and 3.6volts, 38x2AH. The 3.6 volts is used to power up the microcontroller, isolator and the driver for the 1-modem while 7.2 volts is used to charge the modem battery. The life of the battery will be more than five years. It is a one of the innovations for achieving such as long duration
  • ISOLATOR This is a DPDT relay used for isolation of the input and the microcontroller. So whenever the data has to be read this relay is made on momentarily and once the data is acquired this relay is made off.
  • the I-Modem is comprises of general purpose GSM mobile and microcontroller of PIC18f452.
  • the I-Modem will be taking care of data transmission. It is also some times called as a modem.
  • the main advantage of using this modem over other commercially available modem is having unique features like excellent power management schemes and high SIGNAL sensitivity.
  • This modem is made ON using the driver which is controlled by the 18 j series controller which is a main controller for this unit. Only during transmission of data's this will be powered and rest of the time this unit is made completely OFF.
  • the modem battery is charged for every 24 hours for 3 minutes duration only. As the modem battery is lithium its charge lasts for a long duration if the phone is made off since it has a negligible self discharge. Also the transient currents are very less compared to the commercially available GMS modems.
  • the max232 level shifter is being used for debugging purposes.
  • the mobile protocol F-BUS is directly coupled to the 18f series controller since both operate on the same voltage levels. INDICATORS
  • the indicators are only used for testing purpose and while the unit is in USE mode these indicators are removed.
  • TR- ITU modules It is one of the modules of iCAP system. It is same as above mentioned TR- ITU modules except it does not have current reading feature and the contactor.
  • the permanent reference electrodes are interfaced to the pipeline and ITUs as shown in block diagram of Figure 1. It is installed under the soil at around 3 m down. It facilitates to read the pipe to soil potentials.
  • the features are as follows:
  • Base Station The base station Software runs on any standard IBM PC or compatible computer for standalone applications and also run on network environment to support data collection, validation and data analysis.
  • Software Environment Application: Microsoft Visual Basic 6.0
  • the System Architecture shall utilize a standard multi-tier architecture. This architecture included the following tiers.
  • a central database for the storage and management of all meter readings, load profile, and meter configuration data.
  • An application tier which provides processing power to accomplish, automated, scheduled, and ad-hoc requests from the client tier.
  • the system provides an integrated security system which allows administrators to create users and grant those users permission to retrieve/use the required data in the form of different types of reports. Users who are not administrators shall not be given any menu option for security or other administrative functions.
  • the system provides the following security features:
  • Access to the system must be authorized by and authenticated by individual login ID and password.
  • the system will capture logs of user activities and user logins.
  • the system will protect the integrity and confidentiality of the data by allowing authorized user access only.
  • the system has the ability to log all access to the system.
  • Data collection Capabilities The system includes data collection functions necessary to read meter interval data and store that data in the central database. Versions: The system provided fully versioned data system that tracks and maintains both corrections, and changes.
  • the over all Project is divided into 3 modules like:
  • A) Terminal Module :
  • Terminal form is designed for the collection and transfer of information from / to each unit.
  • Terminal form is connected to an external device (GSM modem) through the serial port.
  • GSM modem GSM modem
  • the main objective of the application is to send the specified instructions to the Remote Unit through SMS and to display the received messages in an understandable format to the user and to save the same into database for future reference and for the generation of various printable reports as well as graphs.
  • the application interacts with the Base Station Device (SIM inserted into GSM modem) through Serial port, which internally communicates with the Remote Unit fixed at the other end.
  • the Base Station Device and the Remote unit communicate with each other through GSM technology.
  • the base station software gives the alarm as well as sends SMS to officials.
  • Off PSP form The base station will acquire the data as per the set intervals. It will analyse as per the inbuilt routines. However, it would also display in decimal and graphical format B) Masters Module:
  • Circle details form is designed to get the information to which circle code, circle name and contact persons to that particular circle.
  • Division details form is designed to get the information of division information and under which circle the division comes.
  • Conventional database form :
  • Sub-Division details form is designed to get the information of sub-division information and under which division the sub-division comes.
  • Section details form is designed to get the information of section information and under which sub-division the section comes.
  • Sub-Station details- form is designed to get the information of sub-station information and under which section the sub-station comes.
  • the purpose of the form is to generate the all hierarchical structure details.
  • Master data report The purpose of the form to detailed view of different type of tampers occurred and restored by tamper wise, date wise and interruption conditions.
  • the iCAP system improves the life and safety of pipeline by notifying the behavior of all test stations in real time. It facilitates to better planning and execution of pipeline maintenance schedules etc.
  • iCAP system will reduce the problems and saves money and time. It helps in quantifying the pipeline safety and enhances the life of the pipeline. The big losses due to pipeline tampering/ pilferages/third party activities would be minimized with iCAP system.
  • the iCAP system applications can be extended beyond the pipelines also. e.g. corrosion monitoring & control of storage tanks, underground vessels, pontoons, foundation re-bars etc.
  • I/O ports (ports A, B, C. D, E).
  • port A is a 7-bit wide
  • port B, port C, port D are 8-bit wide
  • port E is a 3 -bit wide. All are bi-directional ports.
  • TimerO module 8-bit/l 6-bit timer/counter with
  • Timer 1 module 16-bit timer/counter
  • Timer2 module 8-bit timer/counter with 8-bit period register (time-base for PWM)
  • Timer3 module 16-bit timer/counter
  • MSSP Master Synchronous Serial Port
  • PLVD Programmable Low Voltage Detection
  • BOR Brown-out Reset
  • POR Power-on Reset
  • PWRT Power-up Timer
  • ICD In-Circuit Debug
  • the pin configuration of the microcontroller are as follows a) RAO/ANO Analog I/P to read voltage. b) RA 1 /ANl Analog I/P to read battery voltage. c) RA2/AN2 Analog I/P to read current. d) RBO Pulse per second I/P from the GPS engine. e) RBl GPS (TX) data I/P. f) RB5 I/P to Analog reference regulator. g) RC7 GSM modem TX. h) RC6 GSM modem RX. i) RDl Driver of Relay Kl. j) RD7 Driver of Relay K2.
  • Picl8f45j 10 is a nano watt microcontroller from Microchip. This is a 40 pin DIP package. It is operated at 20 MHz. some of the characteristics of this microcontroller are,
  • CCP Capture/Compare/PWM
  • ECCP Enhanced Capture/Compare/PWM
  • MSSP Synchronous Serial Port
  • Dual analog comparators with input multiplexing It has 5 ports(A,B,C,D,E) and 3 timers.
  • Operating voltage range 2.0V to 3.6V It has the program memory of 16384 bytes.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Prevention Of Electric Corrosion (AREA)

Abstract

L'invention porte sur un système de protection cathodique intelligent (icap) pour surveiller en continu plusieurs stations de test et notifier l'état des potentiels canalisation/sol (PSP) comprenant : des modules ITU-TR, un point médian ITU, ITU-TLP, des cellules de Référence Permanente, une station de base dans laquelle le module ITU-TR est interfacé à la station de base par l'intermédiaire d'un réseau GSM et qui comprend a) un microcontrôleur ayant un PIC 18F452 de Microchip pour le traitement complet de l'unité ; b) une alimentation à découpage (SMPS) de 230 volts avec 2,5 ampères pour alimenter la batterie de 6 volts. I OAH ; c) un régulateur CI de 3,3 volts pour fournir une tension constante au microcontrôleur et autres périphériques ; d) un relais de 5 volts pour l'isolation du détecteur et de l'unité pour obtenir une impédance élevée ; e) un modem GSM ; f) un moteur GPS ; g) un contacteur.
PCT/IN2008/000154 2007-08-07 2008-03-17 Système de protection cathodique intelligent (icap) WO2009019717A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN1743CH2007 2007-08-07
IN1743/CHENNAI/2007 2007-08-07

Publications (1)

Publication Number Publication Date
WO2009019717A1 true WO2009019717A1 (fr) 2009-02-12

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2666885A1 (fr) * 2012-05-23 2013-11-27 Weilekes Elektronik GmbH Dispositif de protection contre la corrosion
WO2015195858A1 (fr) * 2014-06-18 2015-12-23 Sensus Spectrum Llc Système de gestion de protection cathodique
US9550247B2 (en) 2013-07-18 2017-01-24 Aps Materials, Inc. Double coupon reference cell and methods of making same
CN112981417A (zh) * 2021-02-18 2021-06-18 呼和浩特中燃城市燃气发展有限公司 燃气管道阴极保护测试自动监控系统
WO2022037964A1 (fr) * 2020-08-21 2022-02-24 Dehn Se + Co Kg Unité de délimitation, système de canalisation et procédé pour faire fonctionner un système de canalisation

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6107811A (en) * 1998-02-12 2000-08-22 Cc Technologies Laboratories, Inc. Coupon monitor for cathodic protection system
EP1152235A1 (fr) * 2000-05-04 2001-11-07 Ionpro N.V. Système pour mesurer continuellement dans le temps et dans l'espace l'état de corrosion de structures métalliques enterrées
DE10021994A1 (de) * 2000-05-05 2001-11-08 Ruhrgas Ag Verfahren zur Bestimmung des Rohr/Bodenpotentials an kathodisch geschützten Rohrleitungen
US20010047247A1 (en) * 2000-03-24 2001-11-29 Flatt David William Pipeline mapping and interrupter therefor
WO2003079717A2 (fr) * 2002-03-15 2003-09-25 Qualcomm, Incorporated Procede et appareil de telemesure sans fil utilisant des reseaux ad-hoc
EP1728895A1 (fr) * 2005-06-02 2006-12-06 E.ON Ruhrgas AG Méthode de surveillance pour détecter l'approche d'un corps conductive au pipe-line pour fluides cathodiquement protégée

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6107811A (en) * 1998-02-12 2000-08-22 Cc Technologies Laboratories, Inc. Coupon monitor for cathodic protection system
US20010047247A1 (en) * 2000-03-24 2001-11-29 Flatt David William Pipeline mapping and interrupter therefor
EP1152235A1 (fr) * 2000-05-04 2001-11-07 Ionpro N.V. Système pour mesurer continuellement dans le temps et dans l'espace l'état de corrosion de structures métalliques enterrées
DE10021994A1 (de) * 2000-05-05 2001-11-08 Ruhrgas Ag Verfahren zur Bestimmung des Rohr/Bodenpotentials an kathodisch geschützten Rohrleitungen
WO2003079717A2 (fr) * 2002-03-15 2003-09-25 Qualcomm, Incorporated Procede et appareil de telemesure sans fil utilisant des reseaux ad-hoc
EP1728895A1 (fr) * 2005-06-02 2006-12-06 E.ON Ruhrgas AG Méthode de surveillance pour détecter l'approche d'un corps conductive au pipe-line pour fluides cathodiquement protégée

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2666885A1 (fr) * 2012-05-23 2013-11-27 Weilekes Elektronik GmbH Dispositif de protection contre la corrosion
US9550247B2 (en) 2013-07-18 2017-01-24 Aps Materials, Inc. Double coupon reference cell and methods of making same
US10648088B2 (en) 2013-07-18 2020-05-12 Aps Materials, Inc. Double coupon reference cell and methods of making same
WO2015195858A1 (fr) * 2014-06-18 2015-12-23 Sensus Spectrum Llc Système de gestion de protection cathodique
CN106460198A (zh) * 2014-06-18 2017-02-22 胜赛斯思百克特姆公司 阴极保护管理系统
US10760165B2 (en) 2014-06-18 2020-09-01 Sensus Spectrum Llc Cathodic protection management system
CN106460198B (zh) * 2014-06-18 2020-10-13 胜赛斯思百克特姆公司 阴极保护管理系统
WO2022037964A1 (fr) * 2020-08-21 2022-02-24 Dehn Se + Co Kg Unité de délimitation, système de canalisation et procédé pour faire fonctionner un système de canalisation
CN112981417A (zh) * 2021-02-18 2021-06-18 呼和浩特中燃城市燃气发展有限公司 燃气管道阴极保护测试自动监控系统

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