CN110042399A - A kind of cathode protection device - Google Patents

A kind of cathode protection device Download PDF

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Publication number
CN110042399A
CN110042399A CN201910404959.4A CN201910404959A CN110042399A CN 110042399 A CN110042399 A CN 110042399A CN 201910404959 A CN201910404959 A CN 201910404959A CN 110042399 A CN110042399 A CN 110042399A
Authority
CN
China
Prior art keywords
module
detection unit
protection device
potentiometric detection
cathode protection
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
Application number
CN201910404959.4A
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Chinese (zh)
Inventor
朱国政
韩红东
陈辉
蔡艳丽
叶丽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Mechanical and Electrical Design Institute
Original Assignee
Chongqing Mechanical and Electrical Design Institute
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 Chongqing Mechanical and Electrical Design Institute filed Critical Chongqing Mechanical and Electrical Design Institute
Priority to CN201910404959.4A priority Critical patent/CN110042399A/en
Publication of CN110042399A publication Critical patent/CN110042399A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23FNON-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
    • C23F13/00Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/06Constructional parts, or assemblies of cathodic-protection apparatus
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23FNON-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
    • C23F13/00Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/06Constructional parts, or assemblies of cathodic-protection apparatus
    • C23F13/08Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
    • C23F13/22Monitoring arrangements therefor
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23FNON-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
    • C23F2213/00Aspects of inhibiting corrosion of metals by anodic or cathodic protection
    • C23F2213/10Controlling or regulating parameters
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23FNON-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
    • C23F2213/00Aspects of inhibiting corrosion of metals by anodic or cathodic protection
    • C23F2213/30Anodic or cathodic protection specially adapted for a specific object
    • C23F2213/32Pipes

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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

The invention discloses a kind of cathode protection devices, are related to cathode protection technology field, and the protective device includes shell, potentiometric detection unit, terminals and power module;The shell is cylindrical, and the potentiometric detection unit, terminals and power module are arranged in the shell, and the potentiometric detection unit is connected to the terminals by coaxial cable, and the potentiometric detection unit is additionally coupled to antenna;The potentiometric detection unit includes processor, communication module, GPS module, sampling module and storage unit, and the processor is respectively with communication module, and GPS module, sampling module connects with storage unit;Protective device of the invention can be realized to the monitoring of the fixed point location of the protected device of pipeline, while can be realized the detection to pipeline point monitoring parameters at times.

Description

A kind of cathode protection device
Technical field
The present invention relates to cathode protection technology field, especially a kind of cathode protection device.
Background technique
Cathodic protection is to ensure the important means of oil-gas pipeline safety operation, and switch-off potential is to judge whether pipeline reaches The important parameter of protection.Oil-gas pipeline cathode protection technology develops comparative maturity, in actual operation, protecting effect at present Quality depend on correct maintenance to system.
Regular personal monitoring's mode is substantially used for the detection of oil gas pipe cathode protection parameter both at home and abroad at present, Directly cathode protecting parameter is measured by digital multimeter.
The scheme of existing cathodic protection has the following disadvantages:
Measuring point distribution is remote, quantity is more, obtains associated cathode Protection parameters using artificial periodic detection, expends a large amount of people Power and time, and the supplemental characteristic obtained is inaccurate;
Cathode protecting parameter is affected by factors such as rainfall, surrounding mediums, traditional detection method reality unable to monitor When data be difficult to really reflect pipeline situation;
Same type monitoring system cost is high on the market, monitoring data are unstable, are difficult to accurate judgement cathodic protection equipment Operating condition at present.
Summary of the invention
In view of the above drawbacks of the prior art, it is an object of the invention to provide a kind of cathode protection device, realizations pair Pipeline etc. is by the on-line checking of protective conservation status.
An object of the present invention is that technical solution in this way is realized, a kind of cathode protection device, the protection Device includes shell, potentiometric detection unit, terminals and power module;
The shell is cylindrical, and the potentiometric detection unit, terminals and power module are arranged in the shell, The potentiometric detection unit is connected to the terminals by coaxial cable, and the potentiometric detection unit is additionally coupled to antenna;
The potentiometric detection unit includes processor, communication module, GPS module, sampling module and storage unit, the place Device is managed respectively with communication module, and GPS module, sampling module connects with storage unit;
The communication module is used for the data that detect potentiometric detection unit by antenna transmission to server, described GPS module is used to position the position of cathode protection device, and the sampling module is for being spaced preset time to the specified ginseng of pipeline Number is detected, id information and sampling module institute collected specified parameter of the memory module for storage protection device;
The terminals include relay, and the potentiometric detection unit is connected to the relay, institute by coaxial cable The output node for stating relay is respectively connected to pipeline, sacrificial anode, reference electrode and test film;
Potentiometric detection unit is additionally coupled to the power module, and the power module is connected to external photovoltaic panel, described Power module is used to power for entire protective device.
Optionally, the specified parameter includes energization current potential, switch-off potential, open-circuit voltage, protective current, natural potential.
Optionally, the power module includes energy-storage battery, and the potentiometric detection unit also includes battery voltage detection mould Block, the battery voltage sensing module are used to detect the output voltage of the energy-storage battery.
Optionally, the quantity of the relay is at least 4, wherein the normally opened input node of four relays is respectively connected to Potentiometric detection unit;
Two normally opened node output nodes of the first relay are respectively connected to reference electrode and test film;
Two normally opened node output nodes of the second relay are respectively connected to pipeline and reference electrode;
Two normally opened node output nodes of third relay are respectively connected to sacrificial electrode and reference electrode;
Two normally opened node output nodes of the 4th relay are respectively connected to sacrificial electrode and pipeline.
Optionally, the potentiometric detection unit also includes calibration module, and the processor is connected with the calibration module, institute Calibration module is stated for each specifying the processor after detection cycle that the calibration module is called to carry out the sampling unit Calibration.
Optionally, the cathode protection device further includes lid, the potentiometric detection unit, terminals and power module collection At in fixation plate, one end of the fixation plate is fixed on the lid, and the lid is used to carry out lid conjunction with shell, described The wiring of cathode protection device is picked out from shell far from one end of the lid, and leading-out terminal of the shell far from the lid is also set It is equipped with waterproof closure.
Optionally, the lid carries out lid conjunction with the shell by way of screw thread, also twines on the screw thread of the lid It is wound with waterproof coating.
Optionally, the fixation plate is at triangular prism shaped, and the potentiometric detection unit, terminals and power module are respectively set On three faces of triangular prism.
Optionally, the id information of protective device is the factory sequence number of protective device.
By adopting the above-described technical solution, the present invention has the advantage that: protective device of the invention can be realized Fixed point location monitoring to the protected device of pipeline, while can be realized the inspection to pipeline point monitoring parameters at times It surveys, while can be realized using the technical solution of energy-storage battery by the ability that automatically supplies of protective device, while structure of the invention is tight It gathers, it is easy for installation, also improve the efficiency of later period working service.
Other advantages, target and feature of the invention will be illustrated in the following description to a certain extent, and And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke To be instructed from the practice of the present invention.
Detailed description of the invention
Detailed description of the invention of the invention is as follows:
Fig. 1 is cathode protection device structural schematic diagram of the present invention;
Fig. 2 is the annexation figure of potentiometric detection unit and terminals of the present invention;
Fig. 3 is that cathode protection device of the present invention dismantles structural schematic diagram.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
Embodiment, as shown in Figure 1, the embodiment of the present invention provides a kind of cathode protection device, the protective device includes shell Body 1, potentiometric detection unit 2, terminals 3 and power module 9;
The shell is cylindrical, and the potentiometric detection unit 2, terminals 3 and power module 9 are arranged at the shell Interior, the potentiometric detection unit 2 is connected to the terminals 3 by coaxial cable, and the potentiometric detection unit 2 is additionally coupled to day Line 4, the antenna receive the data interactions such as acquisition instructions for the information transmission between cathode protection device and server.
The potentiometric detection unit includes processor, communication module, GPS module, sampling module and storage unit, the place Device is managed respectively with communication module, and GPS module, sampling module connects with storage unit;
The data that the communication module is used to detect potentiometric detection unit pass through antenna transmission to server, wherein leading to Letter module can select GPRS module or 3G communication module, since cathode protection device data volume collected is relatively fewer, Therefore above-mentioned module can be selected to achieve the purpose that reduce cost.
The GPS module is used to position the position of cathode protection device.
The sampling module detects the specified parameter of pipeline for being spaced preset time, and the memory module is used for The collected specified parameter of id information and sampling module institute of storage protection device, in the present embodiment, the id information of protective device For the factory sequence number of protective device.
The terminals include relay, and the potentiometric detection unit is connected to the relay, institute by coaxial cable The output node for stating relay is respectively connected to pipeline, sacrificial anode, reference electrode and test film.
Potentiometric detection unit is additionally coupled to the power module, and the power module is connected to external photovoltaic panel 10, institute Power module is stated for powering for entire protective device, entire protective device disengaging alternating current can be realized using photovoltaic panel power supply Constraint, so that whole device has universal applicability, while photovoltaic panel can also realize energy-saving and environment-friendly technology effect Fruit.
Optionally, the specified parameter includes energization current potential, switch-off potential, open-circuit voltage, protective current, natural potential.
Optionally, the power module includes energy-storage battery, and the potentiometric detection unit also includes battery voltage detection mould Block, the battery voltage sensing module are used to detect the output voltage of the energy-storage battery.
Optionally, the quantity of the relay is at least 4, as shown in Fig. 2, the wherein normally opened input node of four relays It is respectively connected to potentiometric detection unit;
Two normally opened node output nodes of the first relay are respectively connected to reference electrode 6 and test film 7;
Two normally opened node output nodes of the second relay are respectively connected to pipeline 8 and reference electrode 6;
Two normally opened node output nodes of third relay are respectively connected to sacrificial electrode 5 and reference electrode 6;
Two normally opened node output nodes of the 4th relay are respectively connected to sacrificial electrode 5 and pipeline 8;
In the present embodiment, processor realizes the division to first the-the four relay of relay by controlling signal respectively Control is so that acquisition module can collect energization current potential, switch-off potential, open-circuit voltage, protective current, naturally electricity respectively The acquisition of position, while the period of acquisition can be controlled, such as acquire once electrification current potential at interval of a hour, every Two hours acquire a protective current, in other words every one and a half hours according to energization current potential, switch-off potential, open-circuit voltage, Protective current, natural potential carry out an acquisition order, also or by triggering manually carry out acquisition etc. at once at current time.
Optionally, the potentiometric detection unit also includes calibration module, and the processor is connected with the calibration module, institute Calibration module is stated for each specifying the processor after detection cycle that the calibration module is called to carry out the sampling unit Calibration.
Optionally, as shown in figure 3, the cathode protection device further includes lid 11, the potentiometric detection unit 2, wiring End 3 and power module 9 are integrated in fixation plate 12, and one end of the fixation plate 12 is fixed on the lid 11, the lid 11 for carrying out lid conjunction with shell 1, and the wiring of the cathode protection device is picked out from shell far from one end of the lid, shell Body is additionally provided with waterproof far from the leading-out terminal of the lid and blocks.
Optionally, the lid carries out lid conjunction with the shell by way of screw thread, also twines on the screw thread of the lid It is wound with waterproof coating.
Optionally, the fixation plate is at triangular prism shaped, and the potentiometric detection unit, terminals and power module are respectively set On three faces of triangular prism.
It is illustrated in figure 3 cathode protection device and dismantles structural schematic diagram, it, can be from shell after lid is screwed out from shell Directly extract out, consequently facilitating the later period safeguards protective device, it, will be entire affixed in order to ensure installation is stable and gravity balance Plate 12 is arranged to triangular prism shaped, and gravity is being evenly distributed as much as possible onto three faces, while triangular prism structure can also to protect Protection unit is more compact, improves space utilization rate.
It is to need first to disassemble wiring everywhere needing to extract out protective device internal structure, removes waterproof later It blocks, protective device is then being screwed out into shell from by lid.
In the present embodiment, it is coated with one layer of anti-decaying paint in entire shell and lid Shanghai, to play waterproof and prevent Rotten effect, between 80-100cm, on the one hand diameter can guarantee to protect the length of entire shell between 20cm-35cm Device can stablize installation, while be also convenient for later maintenance discovery.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more, The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, to the greatest extent Invention is explained in detail referring to above-described embodiment for pipe, it should be understood by those ordinary skilled in the art that: still It can be with modifications or equivalent substitutions are made to specific embodiments of the invention, and without departing from any of spirit and scope of the invention Modification or equivalent replacement, should all cover within the scope of the claims of the present invention.

Claims (9)

1. a kind of cathode protection device, which is characterized in that the protective device include shell, potentiometric detection unit, terminals and Power module;
The shell is cylindrical, and the potentiometric detection unit, terminals and power module are arranged in the shell, described Potentiometric detection unit is connected to the terminals by coaxial cable, and the potentiometric detection unit is additionally coupled to antenna;
The potentiometric detection unit includes processor, communication module, GPS module, sampling module and storage unit, the processor Respectively with communication module, GPS module, sampling module connects with storage unit;
The data that the communication module is used to detect potentiometric detection unit are by antenna transmission to server, the GPS mould Block is used to position the position of cathode protection device, and the sampling module is used to be spaced preset time and carries out to the specified parameter of pipeline Detection, id information and sampling module institute collected specified parameter of the memory module for storage protection device;
The terminals include relay, and the potentiometric detection unit is connected to the relay by coaxial cable, it is described after The output node of electric appliance is respectively connected to pipeline, sacrificial anode, reference electrode and test film;
Potentiometric detection unit is additionally coupled to the power module, and the power module is connected to external photovoltaic panel, the power supply Module is used to power for entire protective device.
2. a kind of cathode protection device according to claim 1, which is characterized in that the specified parameter includes the electricity that is powered Position, switch-off potential, open-circuit voltage, protective current, natural potential.
3. a kind of cathode protection device according to claim 1, which is characterized in that the power module includes energy storage electricity Pond, the potentiometric detection unit also includes battery voltage sensing module, and the battery voltage sensing module is for detecting the storage The output voltage of energy battery.
4. a kind of cathode protection device according to claim 2, which is characterized in that the quantity of the relay is at least 4, Wherein the normally opened input node of four relays is respectively connected to potentiometric detection unit;
Two normally opened node output nodes of the first relay are respectively connected to reference electrode and test film;
Two normally opened node output nodes of the second relay are respectively connected to pipeline and reference electrode;
Two normally opened node output nodes of third relay are respectively connected to sacrificial electrode and reference electrode;
Two normally opened node output nodes of the 4th relay are respectively connected to sacrificial electrode and pipeline.
5. a kind of cathode protection device according to claim 1, which is characterized in that the potentiometric detection unit also includes school Quasi-mode block, the processor are connected with the calibration module, and the calibration module is for the place after each specified detection cycle Reason device calls the calibration module to calibrate the sampling unit.
6. a kind of cathode protection device according to claim 1, which is characterized in that the cathode protection device further includes lid Body, the potentiometric detection unit, terminals and power module are integrated in fixation plate, and one end of the fixation plate is fixed in described On lid, the lid is used to carry out lid conjunction with shell, and the wiring of the cathode protection device is from shell far from the lid One end pick out, shell far from the leading-out terminal of the lid be additionally provided with waterproof block.
7. a kind of cathode protection device according to claim 6, which is characterized in that the lid by way of screw thread with The shell carries out lid conjunction, is also wound with waterproof coating on the screw thread of the lid.
8. a kind of cathode protection device according to claim 6, which is characterized in that the fixation plate is at triangular prism shaped, institute Potentiometric detection unit is stated, terminals and power module are separately positioned on three faces of triangular prism.
9. a kind of cathode protection device according to claim 1, which is characterized in that the id information of protective device is protection dress The factory sequence number set.
CN201910404959.4A 2019-05-16 2019-05-16 A kind of cathode protection device Pending CN110042399A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201910404959.4A CN110042399A (en) 2019-05-16 2019-05-16 A kind of cathode protection device

Publications (1)

Publication Number Publication Date
CN110042399A true CN110042399A (en) 2019-07-23

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110499513A (en) * 2019-09-30 2019-11-26 苏州港华燃气有限公司 Integral type cathodic protection potential measuring device and measuring method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008110625A1 (en) * 2007-03-15 2008-09-18 Caen Rfid S.R.L. Apparatus for measuring sacrificial anode wear
CN103985243A (en) * 2014-05-30 2014-08-13 王辉 Cathode protective potential monitoring system for buried metal pipeline
CN104928686A (en) * 2015-05-08 2015-09-23 中国石油化工股份有限公司 Acquisition system of cathode protection data of buried pipeline
CN205576286U (en) * 2016-03-09 2016-09-14 高乐 Cathode protection device
CN106191873A (en) * 2016-08-19 2016-12-07 中国石油化工股份有限公司 A kind of oil and gas pipes cathodic protection intelligent detection device and method of work thereof
CN207567347U (en) * 2017-10-16 2018-07-03 吴天钢 A kind of metal equipment protective device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008110625A1 (en) * 2007-03-15 2008-09-18 Caen Rfid S.R.L. Apparatus for measuring sacrificial anode wear
CN103985243A (en) * 2014-05-30 2014-08-13 王辉 Cathode protective potential monitoring system for buried metal pipeline
CN104928686A (en) * 2015-05-08 2015-09-23 中国石油化工股份有限公司 Acquisition system of cathode protection data of buried pipeline
CN205576286U (en) * 2016-03-09 2016-09-14 高乐 Cathode protection device
CN106191873A (en) * 2016-08-19 2016-12-07 中国石油化工股份有限公司 A kind of oil and gas pipes cathodic protection intelligent detection device and method of work thereof
CN207567347U (en) * 2017-10-16 2018-07-03 吴天钢 A kind of metal equipment protective device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110499513A (en) * 2019-09-30 2019-11-26 苏州港华燃气有限公司 Integral type cathodic protection potential measuring device and measuring method
CN110499513B (en) * 2019-09-30 2024-03-12 苏州港华燃气有限公司 Integrated cathode protection potential measuring device and measuring method

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Inventor after: Zhu Guozheng

Inventor after: Han Hongdong

Inventor after: Chen Hui

Inventor after: Cai Yanli

Inventor after: Ye Li

Inventor before: Zhu Guozheng

Inventor before: Han Hongdong

Inventor before: Chen Hui

Inventor before: Cai Yanli

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Application publication date: 20190723

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