CN106835150B - A kind of cathodic protection system polarization potential measuring instrument and evaluation method - Google Patents
A kind of cathodic protection system polarization potential measuring instrument and evaluation method Download PDFInfo
- Publication number
- CN106835150B CN106835150B CN201710132474.5A CN201710132474A CN106835150B CN 106835150 B CN106835150 B CN 106835150B CN 201710132474 A CN201710132474 A CN 201710132474A CN 106835150 B CN106835150 B CN 106835150B
- Authority
- CN
- China
- Prior art keywords
- potential
- cathodic protection
- protection system
- measurement
- measuring instrument
- 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.)
- Active
Links
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
- C23F13/06—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
-
- 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
- C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
- C23F2213/30—Anodic or cathodic protection specially adapted for a specific object
- C23F2213/32—Pipes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Prevention Of Electric Corrosion (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The present invention relates to a kind of cathodic protection system polarization potential measuring instrument and evaluation methods, polarization potential measuring instrument is to combine current interrupter together with measuring instrumentss in the present invention, realize that cathodic protection current interrupts and measurement polarization potential measuring instrumentss start process of measurement simultaneously by a measurement start button, realize clock synchro measure, it is no longer rely on GPS signal and realizes that current interrupter is synchronous with the clock of measuring instrumentss, by the way that current interruptions module is added in cathodic protection system and protectorate pipe laying line loop, one pumping signal is provided, and it is measured by potential measurement logging modle and records test point A point current potential, by the pipeline current potential for recording cathodic protection system turn-off transient, eliminate the influence of IR drop, accurately obtain pipeline polarization potential value, to evaluate the validity of cathodic protection system.
Description
Technical field
The present invention relates to a kind of cathodic protection system measuring instrument and evaluation methods, and in particular to a kind of cathodic protection system
Polarization potential measuring instrument and evaluation method.
Background technique
Transport vehicle of the buried pipeline as oil gas, one of critical facility of ground surface works is connection upstream resource under
The tie for swimming user, since pipeline is embedded in underground for a long time, over time, due to extraneous soil characteristic and landform sedimentation etc.
Situations such as influence of factor, burn into perforation and leakage can occur for pipeline, serious economic loss can be brought to country, pipeline is rotten
Erosion not only will cause outside serious economic loss, it can also cause the leakage of harmful substance, pollute the environment, or even also
The disaster accident that can cause burst, jeopardizes personal safety.For conveying the long distance pipeline and collection transmission pipe network of natural gas, prevent outside pipeline
The use of rotten technology and construction quality are directly related to the safe operation and service life of pipeline.Due to Pipeline Crossing Program area landform
Complexity, soil property are multifarious, and buried steel pipeline needs to take different outer anti-corrosion measures.
Cathodic protection is a kind of guard method of control electrochemical metal corrosion, in the battery that cathodic protection system is constituted
In, oxidation reaction is concentrated on anode, to inhibit as cathode by the corrosion on protection metal.In buried steel
Common two kinds of cathode protecting process are sacrificial protection and impressed current cathodic protection method, anode loss protection in pipeline
Method is to be made of a kind of than being electrically connected by the metal or alloy of protection metal current potential more negativity with protected metal, is being electrolysed
In liquid, the anode of sacrifice is because relatively more active preferential dissolution, releases electric current for being polarized by protection metal, realize protection；It is additional
Current cathodic protection method is to force electron stream to be flowed to from soil by protection gold by external dc electric current and impressed current anode
Belong to, makes to be protected metal structure current potential lower than ambient enviroment, impressed current cathodic protection method is mainly for the protection of large size or is in
Metal structure in high soil resistivity soil, such as: long defeated buried pipeline, large tank group etc..
Currently, whether evaluation Buried steel pipelines cathodic protection system is effective, if corrosion-resisting function is played, it is main to use
The polarization potential of Buried steel pipelines is evaluated, and due to various resistance at electric resistance of soil and holiday, I R drops error sometimes
Up to hundreds of thousands of millivolts cause buried pipeline cathodic protection measurement current potential to be distorted completely, influence cathodic protection efficiency evaluation
Accuracy.
The measuring instrument of Buried steel pipelines cathodic protection system polarization potential, current China rely primarily on external instrument,
Import instrument is mainly made of two parts --- and current interrupter and potential measuring instrument, instrument is expensive than cumbersome, operation
Complexity is unfavorable for single carrying and measurement operation；And when being needed when current interrupter and potential measuring instrument measurement polarization potential
Clock is synchronous, and two components, which rely on, receives the realization synchronization of satellite GPS signal, and satellite-signal difference or interior often can not realize polarization
Potential measurement.
China has the Buried steel pipelines of hundreds of thousands kilometer to have cathodic protection system at present, measures cathodic protection system
Polarization potential is the work of a routine, and ordinary multimeter can not measure polarization potential, therefore is badly in need of wanting a kind of light, behaviour
Make the instrument that cathodic protection system polarization potential can be accurately measured under convenient, various ambient conditions.
Application publication number CN102337542A applies for publication date 2011.07.19, and entitled " buried metal pipeline cathode is protected
Protecting system detection method and device " invention, pass through the synchronous letter of GPS using the rectifier of buried metal pipeline cathode protection system
Number control current interrupter periodically turns on and off rectifier and provides pumping signal to buried pipe, utilizes synchronous GPS electricity
Pipe ground voltage is turned on and off between pressure measurement data record instrument measurement starting point and measurement point, while to the lock-in tube measured
Voltage carries out recording and displaying, to obtain the cathode protection condition of buried pipe.
Summary of the invention
It is an object of the present invention to disclose a kind of cathodic protection system polarization potential measuring instrument and evaluation method, in the present invention
Polarization potential measuring instrument is combined current interrupter with measuring instrumentss together, realizes yin by a measurement start button
Pole protective current interrupts and measurement polarization potential measuring instrumentss start process of measurement simultaneously, realizes clock synchro measure, no longer according to
It realizes that current interrupter is synchronous with the clock of measuring instrumentss by GPS signal, and passes through record cathodic protection system turn-off transient
Pipeline current potential eliminates the influence of IR drop, pipeline polarization potential value is accurately obtained, to evaluate the validity of cathodic protection system.
Realizing the technical solution of cathodic protection system polarization potential measuring instrument of the present invention and evaluation method is:
A kind of cathodic protection system polarization potential measuring instrument, the polarization potential measuring instrument inside are equipped with potential measurement and record
Module and current interruptions module, the potential measurement logging modle include potential measurement module, data recordin module and delay note
Module is recorded, the current interruptions module includes current interruptions switch, is equipped with chip, the core inside the polarization potential measuring instrument
Piece connects potential measurement module, data recordin module, delay logging modle, current interruptions switch control terminal, display module and control
Molding block, the chip interior are equipped with clock module, and the chip connects power supply, the potential measurement by measurement trigger switch
Module connects measurement port and reference potential port, and the data recordin module connects the interface of a connection computer, described to prolong
When logging modle connection delay record adjusting controller, the current interruptions switch ends are separately connected an interruptive port, institute
Display module connection display board is stated, the control module connects control button.
Further, the panel of the polarization potential measuring instrument is equipped with display board, measurement trigger switch and connection computer
Interface, the display board two sides and lower section are equipped with control button, are additionally provided with reference on the polarization potential measuring instrument panel
Current potential port, measurement port and two interruptive ports, the polarization potential measuring instrument front end face are equipped with delay record and adjust control
Device.
Further, the polarization potential measuring instrument is mounted in a rectangular box, and the cabinet front end face is equipped with and takes
Through-hole with handles with for installing delay record adjusting controller.
Two interruptive ports of a kind of cathodic protection system evaluation method, the polarization potential measuring instrument are connected by test pencil
Between cathodic protection system and protectorate buried pipeline, the electronics formed in cathodic protection system needs to survey by polarization potential
The circuit of protectorate buried pipeline is flowed to after amount instrument, the measurement port of the polarization potential measuring instrument meets test point A by test pencil,
The test point A is located among the circuit of cathodic protection system and protectorate buried pipeline, and test point A is close to protectorate pipe laying
The reference potential port of line, the polarization potential measuring instrument is inserted into soil, the specific steps are as follows:
1) after completing wiring, the measurement trigger switch of polarization potential measuring instrument is pressed, inside the polarization potential measuring instrument
Current interruptions module is run simultaneously with potential measurement logging modle.
2) the current interruptions module opened " logical " cathodic protection system and protectorate pipe laying line loop by N seconds, then
Periodic duty is carried out in the way of M seconds pass " disconnected " cathodic protection system and protectorate pipe laying line loop.
3) the potential measurement logging modle measurement data includes A when cathodic protection system is powered to protectorate buried pipeline
Point current potential (Von value), the current potential (Voff value) with 4 shutdown transient A point of cathodic protection system, by be delayed logging modle 15,
The current potential (Voff value) of A point can be measured after 60-70 milliseconds of delay after cathodic protection system power-off.
4) when not keys interrupt measures, the current potential of multiple groups A point will be recorded for a record period by every N+M seconds
Data, and record storage.
5) multiple groups A point potential data is recorded, pipe is evaluated by the current potential (Voff value) of cathodic protection system shutdown transient A point
Road polarization potential can accurately remove the influence of IR drop, accurately obtain pipeline polarization potential.
Further, the value of the N is 2, and the value of the M is 1.
Further, the potential measurement logging modle is measured by copper/saturated copper sulphate reference electrode and records test point A
Point current potential.
Detailed description of the invention
Fig. 1 is cathodic protection system polarization potential measuring instrument schematic diagram of the present invention；
Fig. 2 is the perspective view of cathodic protection system polarization potential measuring instrument of the present invention；
Fig. 3 is cathodic protection system evaluation method schematic diagram of the present invention；
Fig. 4 is the wiring diagram of cathodic protection system evaluation method of the present invention；
Fig. 5 is the datagram that cathodic protection system evaluation method of the present invention is measured.
The title that each component is marked in figure is as follows:
1, polarization potential measuring instrument；11, chip；111, clock module；12, potential measurement logging modle；13, potential measurement
Module；131, measurement port；132, reference potential port；14, data recordin module；141, the interface of computer is connected；15, it is delayed
Logging modle；151, delay record adjusting controller；16, current interruptions module；161, current interruptions switch；162, the middle broken ends of fractured bone
Mouthful；17, display module；171, display board；18, control module；181, control button；2, trigger switch is measured；3, cabinet；31,
Carry handle；32, through-hole；4, cathodic protection system；5, protectorate buried pipeline.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment: a kind of cathodic protection system polarization potential measuring instrument is equipped with current potential inside the polarization potential measuring instrument 1
Logging modle 12 and current interruptions module 16 are measured, the potential measurement logging modle 12 includes potential measurement module 13, data
Logging modle 14 and delay logging modle 15, the current interruptions module 16 include current interruptions switch 161, the polarization potential
Chip 11 is equipped with inside measuring instrument 1, the chip 11 connects potential measurement module 13, data recordin module 14, delay record mould
Block 15,161 control terminal of current interruptions switch, display module 17 and control module 18 are equipped with clock module inside the chip 11
111, the chip 11 connects power supply by measurement trigger switch 2, and the potential measurement module 13 connects measurement port 131 and ginseng
Current potential port 132 is examined, the data recordin module 14 connects the interface 141 of a connection computer, the delay logging modle 15
Connection delay record adjusting controller 151,161 both ends of current interruptions switch are separately connected an interruptive port 162, described
Display module 17 connects display board 171, and the control module 18 connects control button 181, by potential measurement logging modle 12 with
Current interruptions module 16 is integrated into an instrument, and user is facilitated to carry, potential measurement logging modle 12 and current interruptions module
16 share a chip 11, share a clock module 111 in chip 11, guarantee that the clock in two module operational process is same
Step does not need addition GPS receiver signaling module, so that instrument is lighter.
The panel of the polarization potential measuring instrument 1 is equipped with display board 171, measurement trigger switch 2 and connects connecing for computer
Mouth 141,171 two sides of display board and lower section are equipped with control button 181, also set on 1 panel of polarization potential measuring instrument
There are reference potential port 132, measurement port 131 and two interruptive ports 162,1 front end face of polarization potential measuring instrument is equipped with
Delay record adjusting controller 151.
The polarization potential measuring instrument 1 is mounted in a rectangular box 3, and 3 front end face of cabinet, which is equipped with, carries handle
31 record the through-hole 32 of adjusting controller with for installing to be delayed.
Two interruptive ports 162 of a kind of cathodic protection system evaluation method, the polarization potential measuring instrument 1 pass through test pencil
It is connected between cathodic protection system 4 and protectorate buried pipeline 5, the electronics formed in cathodic protection system 4 needs to pass through pole
The circuit of protectorate buried pipeline 5 is flowed to after change potential measuring instrument 1, the measurement port 131 of the polarization potential measuring instrument 1 passes through
Test pencil meets test point A, and the test point A is located among the circuit of cathodic protection system 4 and protectorate buried pipeline 5, test point A
Close to protectorate buried pipeline 5, the reference potential port 132 of the polarization potential measuring instrument 1 is inserted into soil, and specific steps are such as
Under:
1) after completing wiring, the measurement trigger switch 2 of polarization potential measuring instrument 1 is pressed, in the polarization potential measuring instrument 1
Portion's current interruptions module 16 is run simultaneously with potential measurement logging modle 12.
2) the current interruptions module 16 opened 5 circuit of " logical " cathodic protection system 4 and protectorate buried pipeline by N seconds,
Then periodic duty is carried out in the way of 5 circuit of " disconnected " cathodic protection system 4 and protectorate buried pipeline of M seconds pass.
3) 12 measurement data of potential measurement logging modle includes that cathodic protection system 4 is logical to protectorate buried pipeline 5
The current potential (Von value) of A point when electric, the current potential (Voff value) with 4 shutdown transient A point of cathodic protection system record mould by delay
Block 15 can measure the current potential (Voff value) of A point after cathodic protection system power-off after 60-70 milliseconds of delay.
4) when not keys interrupt measures, the current potential of multiple groups A point will be recorded for a record period by every N+M seconds
Data, and record storage.
5) multiple groups A point potential data is recorded, is evaluated by the current potential (Voff value) of 4 shutdown transient A point of cathodic protection system
Pipeline polarization potential can accurately remove the influence of IR drop, accurately obtain pipeline polarization potential: false when cathodic protection system 4 is powered
If protective current intensity is I, the current potential V of A point is by the polarization potential and system of pipeline and the electricity of the equivalent resistance R of soil and system
Flow the product composition of I, it may be assumed that the energization current potential (Von) of pipeline=pipeline polarization potential+IR；When cathodic protection system 4 disconnects wink
Between, the electric current in cathodic protection system 4 goes to zero, and the polarization potential of pipeline does not extend and (about 70 millis that disappear at any time again
Second), the current potential at this moment measuring A point is the polarization potential of pipeline, it may be assumed that and pipeline switch-off potential (Voff)=pipeline polarization potential+
IR=pipeline polarization potential+0 × R=pipeline polarization potential+0.
The value of the N is 2, and the value of the M is 1.
The potential measurement logging modle 13 is measured by copper/saturated copper sulphate reference electrode and records test point A point current potential.
The working principle of the present embodiment: by current interrupter together with potential measurement instrument combine, by sharing one piece
Chip 11 is controlled, clock module 111 is equipped with inside chip 11, guarantees in operational process, current interruptions module 16 and potential measurement
Module 12 is run simultaneously, so that GPS signal receiving module in two instruments of removal, guarantees that instrument is light and small convenient.
The invention has the benefit that
1) current interrupter used in cathodic protection system in buried pipeline and high-precision current potential measuring instrumentss will be evaluated
It is combined into a polarization potential measuring instrument, it is easy to carry.
2) the potential measurement logging modle in polarization potential measuring instrument and current interruptions module share a clock, guarantee fortune
Clock is synchronous during row, and removes GPS receiver module in two instruments, reduces the weight of instrument.
3) when evaluating cathodic protection system validity, polarization potential measuring instrument can recorde cathodic protection system and disconnect wink
Between pipeline current potential, by cathodic protection system disconnect moment pipeline current potential more can accurately reacting pipe polarization potential.
Claims (6)
1. a kind of cathodic protection system polarization potential measuring instrument, which is characterized in that be equipped with electricity inside the polarization potential measuring instrument
Position measurement logging modle and current interruptions module, the potential measurement logging modle includes potential measurement module, data record mould
Block and delay logging modle, the current interruptions module include current interruptions switch, are equipped with inside the polarization potential measuring instrument
Chip, the chip connection potential measurement module, delay logging modle, current interruptions switch control terminal, are shown data recordin module
Show that module and control module, the chip interior are equipped with clock module, the chip connects power supply, institute by measurement trigger switch
Potential measurement module connection measurement port and reference potential port are stated, the data recordin module connects connecing for a connection computer
Mouthful, the delay logging modle connection delay record adjusting controller, the current interruptions switch ends are separately connected in one
Interruptive port, the display module connect display board, and the control module connects control button.
2. cathodic protection system polarization potential measuring instrument according to claim 1, which is characterized in that the polarization potential measurement
The panel of instrument is equipped with display board, measurement trigger switch and the interface for connecting computer, and the display board two sides are equipped with lower section
Control button is additionally provided with reference potential port, measurement port and two interruptive ports, institute on the polarization potential measuring instrument panel
It states polarization potential measuring instrument front end face and is equipped with delay record adjusting controller.
3. cathodic protection system polarization potential measuring instrument according to claim 1, which is characterized in that the polarization potential measurement
Instrument is mounted in a rectangular box, and the cabinet front end face, which is equipped with, to be carried handle and be used to install delay record adjusting controller
Through-hole.
4. a kind of evaluation using cathodic protection system polarization potential measuring instrument as described in claim 1 to cathodic protection system
Method, which is characterized in that two interruptive ports of the polarization potential measuring instrument by test pencil be connected to cathodic protection system with
Between protectorate buried pipeline, the electronics formed in cathodic protection system needs protected by flowing to after polarization potential measuring instrument
The measurement port in the circuit of buried pipeline, the polarization potential measuring instrument meets test point A by test pencil, and the test point A is located at
Among the circuit of cathodic protection system and protectorate buried pipeline, test point A is close to protectorate buried pipeline, the polarization potential
In the reference potential port insertion soil of measuring instrument, the specific steps are as follows:
1) after completing wiring, the measurement trigger switch of polarization potential measuring instrument, the polarization potential measuring instrument internal current are pressed
Interrupt module is run simultaneously with potential measurement logging modle；
2) the current interruptions module opened " logical " cathodic protection system and protectorate pipe laying line loop by N seconds, then pressed M seconds
The mode of Zhong Guan " disconnected " cathodic protection system and protectorate pipe laying line loop carries out periodic duty；
3) the potential measurement logging modle measurement data includes A point when cathodic protection system is powered to protectorate buried pipeline
Current potential Von value, the current potential Voff value with cathodic protection system (4) shutdown transient A point can be by being delayed logging modle (15)
The current potential Voff value of A point is measured after cathodic protection system power-off after 60-70 milliseconds of delay；
4) when not keys interrupt measures, the current potential number of multiple groups A point will be recorded for a record period by every N+M seconds
According to, and record storage；
5) multiple groups A point potential data is recorded, pipeline polarization is evaluated by the current potential Voff value of cathodic protection system shutdown transient A point
Current potential can accurately remove the influence of IR drop, accurately obtain pipeline polarization potential.
5. the evaluation method of cathodic protection system according to claim 4, which is characterized in that the value of the N is 2, the M's
Value is 1.
6. the evaluation method of cathodic protection system according to claim 4, which is characterized in that the potential measurement logging modle
It is measured by copper/saturated copper sulphate reference electrode and records test point A point current potential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710132474.5A CN106835150B (en) | 2017-03-07 | 2017-03-07 | A kind of cathodic protection system polarization potential measuring instrument and evaluation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710132474.5A CN106835150B (en) | 2017-03-07 | 2017-03-07 | A kind of cathodic protection system polarization potential measuring instrument and evaluation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106835150A CN106835150A (en) | 2017-06-13 |
| CN106835150B true CN106835150B (en) | 2019-04-05 |
Family
ID=59137469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710132474.5A Active CN106835150B (en) | 2017-03-07 | 2017-03-07 | A kind of cathodic protection system polarization potential measuring instrument and evaluation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106835150B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306490B (en) * | 2017-07-26 | 2021-01-29 | 中国石油天然气股份有限公司 | Cathode protection testing device |
| CN110196452A (en) * | 2019-06-25 | 2019-09-03 | 北京城建勘测设计研究院有限责任公司 | Extraordinary great burying underground piping detection device |
| WO2021062403A1 (en) * | 2019-09-27 | 2021-04-01 | Borin F W | Automated cathodic protection measurement and communication system and method |
| CN111118502B (en) * | 2020-01-16 | 2023-03-21 | 西安热工研究院有限公司 | Small-caliber heat exchange tube cathode protection potential measuring device and using method |
| CN114150322B (en) * | 2020-09-07 | 2024-03-08 | 中国石油化工股份有限公司 | Portable auxiliary measuring device for measuring on-off electric potential of pipeline cathodic protection |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202063999U (en) * | 2011-03-16 | 2011-12-07 | 中国石油天然气股份有限公司 | Cathode protection switch-off potential detection device of buried pipeline |
| CN103147082A (en) * | 2013-03-25 | 2013-06-12 | 青岛雅合阴保工程技术有限公司 | Cathode protection device for controlling multiplexed output by utilizing polarization potential and operating method thereof |
| CN103866330A (en) * | 2014-03-12 | 2014-06-18 | 西安石油大学 | Cathodic protection site online monitoring and evaluating method |
| CN104651854A (en) * | 2015-02-13 | 2015-05-27 | 深圳市燃气集团股份有限公司 | Method and system for measuring switch-off potential of cathode protection system |
| CN205223356U (en) * | 2015-10-30 | 2016-05-11 | 河南汉威电子股份有限公司 | A monitoring devices for measuring buried pipeline cathodic protection current potential parameter |
| CN105780016A (en) * | 2016-04-26 | 2016-07-20 | 天津隆顺技术服务有限公司 | Cathode protection system for powerless insulation region |
| CN206580888U (en) * | 2017-03-07 | 2017-10-24 | 佛山市天然气高压管网有限公司 | A kind of cathodic protection system polarization potential measuring instrument |
-
2017
- 2017-03-07 CN CN201710132474.5A patent/CN106835150B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202063999U (en) * | 2011-03-16 | 2011-12-07 | 中国石油天然气股份有限公司 | Cathode protection switch-off potential detection device of buried pipeline |
| CN103147082A (en) * | 2013-03-25 | 2013-06-12 | 青岛雅合阴保工程技术有限公司 | Cathode protection device for controlling multiplexed output by utilizing polarization potential and operating method thereof |
| CN103866330A (en) * | 2014-03-12 | 2014-06-18 | 西安石油大学 | Cathodic protection site online monitoring and evaluating method |
| CN104651854A (en) * | 2015-02-13 | 2015-05-27 | 深圳市燃气集团股份有限公司 | Method and system for measuring switch-off potential of cathode protection system |
| CN205223356U (en) * | 2015-10-30 | 2016-05-11 | 河南汉威电子股份有限公司 | A monitoring devices for measuring buried pipeline cathodic protection current potential parameter |
| CN105780016A (en) * | 2016-04-26 | 2016-07-20 | 天津隆顺技术服务有限公司 | Cathode protection system for powerless insulation region |
| CN206580888U (en) * | 2017-03-07 | 2017-10-24 | 佛山市天然气高压管网有限公司 | A kind of cathodic protection system polarization potential measuring instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106835150A (en) | 2017-06-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106835150B (en) | A kind of cathodic protection system polarization potential measuring instrument and evaluation method | |
| CN102252168B (en) | Accurate positioning and detecting method and device for damages of underground metal pipeline anticorrosive coating | |
| CN105277787B (en) | Electric automobile insulation Resistance Fault prediction technique and system | |
| CN101545961B (en) | System and method for polarity testing of electronic transformer | |
| CN102337542A (en) | Detection method and apparatus for buried metal pipeline cathode protection system | |
| CN109797399A (en) | The measuring device and method of steel gas pipe underground polarization potential | |
| CN109487277A (en) | A kind of buried pipe erosion resistant coating and cathodic protection detection system | |
| CN103604992B (en) | The method and system of nuclear phase on-load school protection that Substation secondary circuit is wireless | |
| CN102520318B (en) | Fault recognition method for electric transmission line | |
| CN206580888U (en) | A kind of cathodic protection system polarization potential measuring instrument | |
| CN102590704A (en) | After-test simulation method for internal and external failure recognition of double-circuit transmission line region based on Bergeron model | |
| CN104651854A (en) | Method and system for measuring switch-off potential of cathode protection system | |
| CN102033207B (en) | Automatic test equipment of Motorola lithium battery BP protection board | |
| CN102081134A (en) | Method for locating disturbance source of electrical power system | |
| CN110066997B (en) | External corrosion AC/DC comprehensive detection method | |
| CN103592576A (en) | GIS-based anti-theft monitoring and positioning system for power cables and monitoring method | |
| CN206986284U (en) | A kind of buried pipeline monitoring system | |
| CN105974266A (en) | Fault positioning system and method for long distribution network line | |
| CN201527459U (en) | Tracker of grounding point of power overhead line | |
| CN202744633U (en) | Pipeline and station yard power failure potential effectiveness evaluating device | |
| CN209894665U (en) | Remote-transmission monitoring galvanic corrosion meter | |
| CN209652430U (en) | Cathodic protection conducting wire and the no-welding mounting device by protective | |
| CN106526412B (en) | A kind of method and apparatus suitable for photovoltaic field direct current cables Earth design | |
| CN110286083A (en) | Outer corrosion method for comprehensive detection | |
| CN219490168U (en) | Potential acquisition and measurement circuit of cathodic protection acquisition instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |