CN106011873A - Cathodic protection automatic monitoring system of petroleum storage tank - Google Patents
Cathodic protection automatic monitoring system of petroleum storage tank Download PDFInfo
- Publication number
- CN106011873A CN106011873A CN201610539241.2A CN201610539241A CN106011873A CN 106011873 A CN106011873 A CN 106011873A CN 201610539241 A CN201610539241 A CN 201610539241A CN 106011873 A CN106011873 A CN 106011873A
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- CN
- China
- Prior art keywords
- storage tank
- cathodic protection
- petroleum storage
- monitoring system
- automatic monitoring
- 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.)
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Classifications
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- 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
- C23F2213/10—Controlling or regulating 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
- 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
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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 provides a cathodic protection automatic monitoring system of a petroleum storage tank, belongs to the technical field of petroleum chemical engineering, and solves the problem of shortage of effective methods for accurately detecting a cathodic protection system of the petroleum storage tank in real time in the prior art. The cathodic protection automatic monitoring system of the petroleum storage tank comprises multiple auxiliary anodes, multiple reference electrodes, a voltmeter, a potentiostat, a control module and an upper computer; all the auxiliary anodes are electrically connected with a positive pole of the potentiostat; a tank body is electrically connected with a negative pole of the potentistat; each reference electrode is connected with the tank body through the voltmeter; the voltmeter is connected with the control module; and the control module is connected with the upper computer. The cathodic protection automatic monitoring system of the petroleum storage tank has such advantages as detection timeliness, accuracy and reliability.
Description
Technical field
The invention belongs to technical field of petrochemical industry, the negative electrode relating to a kind of petroleum storage tank is protected
Protect automatic monitoring system.
Background technology
Storage tank is that oil depot, harbour and petrochemical enterprise store liquid charging stock, intermediate products
One of visual plant, be requisite equipment for crude stockpile engineering.With
Developing rapidly of petrochemical industry, and the great demand that country is to the energy, China
Various places establish large number of steel storage tank.These storage tanks meet with during running use
By the etching problem from internal and external environment medium, thus the safe operation of storage tank is produced weight
The impact wanted.Along with being in full swing of crude stockpile engineering, the corrosion to storage tank equipment is prevented
Protect research and become one of industrial hot spot, and show important war to a certain extent especially
Slightly meaning.
Generally prevent the tank body being in soil environment rotten by the cathode protection method of impressed current
Erosion.Impressed current cathodic protection system mainly includes performance loop, and performance loop is whole
The operative body of impressed current cathodic protection system, it is the most working properly for whole protection
The key that system is properly functioning.
The detection of cathodic protection potential at present uses human at periodic intervals's monitoring, monitors week suitably
Phase is one month, monitors excessive cycle, it is difficult to ensure the effectiveness of cathodic protection, monitoring
Time is too short, and monitoring expense increases severely, and substantially increases the maintenance cost of pipeline.Artificial prison
The evaluation of result surveyed is main by rule of thumb, and its reasonability and accuracy exist the most not enough, and
And not in time, evaluation dangerous, difficult.
Summary of the invention
The present invention is directed to the problems referred to above that existing technology exists, it is provided that a kind of petroleum storage tank
Cathodic protection automatic monitoring system, the technical problem to be solved is: how
In real time, accurately the cathodic protection system of petroleum storage tank is detected.
The purpose of the present invention can be realized by following technical proposal: a kind of petroleum storage tank
Cathodic protection automatic monitoring system, petroleum storage tank has tank body, it is characterised in that described
Cathodic protection automatic checkout system includes some impressed current anodes, some reference electrodes, voltage
Table, potentiometer, control module and host computer, each impressed current anode all with the positive pole of potentiometer
Electrical connection, described tank body is connected with the negative electricity of potentiometer, each reference electrode and tank body it
Between connected by voltmeter, described voltmeter is connected with control module, described control module
It is connected with host computer.
The operation principle of native system is as follows: protective current is introduced soil from power supply by impressed current anode
After in earth, through soil flow into protected tank body, make tank surface carry out cathodic polarization with
Preventing electrochemical corrosion, electric current is flowed into power cathode by tank body again and forms a loop, this
Planting loop and define an electrolyzer, tank body is negative pole in the loop, is in reducing environment
In, and impressed current anode carries out oxidation reaction and is corroded；Reference electrode is to measure various electricity
As with reference to the electrode compared during electrode potential, by determined electrode and accurately known electrode electricity
The reference electrode of gesture numerical value constitutes battery, measures cell emf numerical value, so that it may calculate
The electrode potential of determined electrode, when reference electrode is by voltmeter and soil or water
When other metals connect, it is half corrosion cell that reference electrode becomes, and voltmeter is used for measuring
The current potential of buried tank body.
In the cathodic protection automatic monitoring system of above-mentioned a kind of petroleum storage tank, described auxiliary
The quantity of supporing yang pole is four, in the soil layer of the surrounding being uniformly arranged on tank body, and described ginseng
Arrange with impressed current anode one_to_one corresponding than electrode.Owing to tank body volume is relatively big, therefore
The soil layer of the surrounding of tank body arranges multiple impressed current anode and corresponding reference electrode can make
The electric current that cathodic protection is applied on tank body more uniformly, measure more accurate.
In the cathodic protection automatic monitoring system of above-mentioned a kind of petroleum storage tank, described ginseng
Container, copper electrode and the p-wire of cylindrical shape is included, equipped with sulfur in described container than electrode
Acid copper solution, described copper electrode upper end is fixed on container upper end and is connected with p-wire, institute
Stating p-wire and pass container upper end, described copper electrode lower end is provided with semipermeable membrane.
In the cathodic protection automatic monitoring system of above-mentioned a kind of petroleum storage tank, each reference
Electrode passes sequentially through the pipeline being embedded in soil layer and connects and form loop, on described pipeline
It is provided with two-way pump between adjacent two reference electrodes, described pipeline is marked with copper-bath.
By arranging pipeline and two-way pump, copper-bath can be controlled between four reference electrodes
Distribution, so can ensure that the concordance of copper-bath in all reference electrodes, increase
Add the flowing of copper-bath so that solution each several part is uniform, it is also possible to prevent semipermeable membrane
Blocking and the inaccurate problem of measurement that causes of the copper electrode surface upper dirt of bonding, when molten
When the amount of liquid is depleted to less, copper-bath can be pumped in a reference electrode,
Realize single measurement successively, so can increase service life.
In the cathodic protection automatic monitoring system of above-mentioned a kind of petroleum storage tank, described pipe
Filter it is additionally provided with on road.Miscellaneous by arrange that filter can filter in copper-bath
Matter, thus avoid semipermeable membrane blocking and the upper dirt of copper electrode surface bonding, make measurement more
Accurately.
In the cathodic protection automatic monitoring system of above-mentioned a kind of petroleum storage tank, described pipe
Register it is additionally provided with on road.Control solution temperature to be prevented from because during low temperature, copper sulfate is molten
Liquid freezes and has influence on the normal work of reference electrode.
In the cathodic protection automatic monitoring system of above-mentioned a kind of petroleum storage tank, described pipe
Being additionally provided with an arm elevated above the soil on road, the upper end of described arm has valve and liquid feeding
Mouthful.Can be beneficial to from the external world in reference electrode by arranging arm, filling opening and valve
Supplement copper-bath, it is to avoid have influence on the normal of reference electrode because copper-bath dries up
Work.
In the cathodic protection automatic monitoring system of above-mentioned a kind of petroleum storage tank, described control
Molding block includes AD Sampling Interface, controller, power supply, clock unit, the logic that powers on list
Unit, memory element and serial port unit, described AD uses Interface and Controler to connect, described
Clock unit respectively with power on logical block and control be connected, described in power on logical block also
Being connected with power supply and control power supply and power on to controller, described controller passes through described serial ports
Unit is connected with host computer.Can automatic tour inspection tank body incessantly by controller
The primary operating parameter of cathodic protection system, and automatic storage measurement result, pass through simultaneously
Host computer shows and printout in real time, can and alarm, it is simple to take measures, be
The important guarantee ensure that storage tank facility is properly functioning, eliminating safe hidden trouble.
Compared with prior art, advantages of the present invention is as follows:
1, native system can be real-time as the Main Means of monitoring tank cathodic protection state
Solve the etch state of storage tank, tank cathodic protection system operation situation information be provided at any time,
Pinpoint the problems in time or hidden danger.
2, this system can represent point cathode protection mainly by automatic tour inspection storage tank incessantly
Operational factor, has display, automatic storage measurement result and printout function in real time,
Can and alarm, it is simple to take measures, be to ensure that storage tank facility properly functioning, eliminate
The important guarantee of potential safety hazard.
Accompanying drawing explanation
Fig. 1 is that the vertical view of the cathodic protection automatic monitoring system of petroleum storage tank in embodiment is shown
It is intended to.
The cathodic protection automatic monitoring system circuit theory of petroleum storage tank in Fig. 2 the present embodiment
Schematic diagram.
Fig. 3 is the cathodic protection automatic monitoring system reference electricity of petroleum storage tank in the present embodiment
The connection diagram of pole.
The top view of Fig. 4 Fig. 3.
The control mould of the cathodic protection automatic monitoring system of petroleum storage tank in Fig. 5 the present embodiment
Block and the connection diagram of host computer.
In figure, 1 tank body；2 impressed current anodes；3 reference electrodes；4 voltmeters；5 current potentials
Instrument；6 control modules；7 host computers；8 containers；9 copper electrodes；10 p-wires；11
Semipermeable membrane；12 copper-baths；13 pipelines；14 two-way pumps；15 filters；16 adjust
Temperature device；17 arms；18 valves；19 filling openings；20AD Sampling Interface；21 control
Device；22 power supplys；23 clock units；24 power on logical block；25 memory element；26
Serial port unit.
Detailed description of the invention
The following is the specific embodiment of the present invention and combine accompanying drawing, the technical side to the present invention
Case is further described, but the present invention is not limited to these embodiments.
As shown in Figure 1 and Figure 2, the cathodic protection automatic monitoring system of this petroleum storage tank sets
Putting on petroleum storage tank, petroleum storage tank has tank body 1, and this cathodic protection detects system automatically
System include voltmeter 4, potentiometer 5, some impressed current anodes 2, some reference electrodes 3,
Control module 6 and host computer 7, each impressed current anode 2 all positive poles with potentiometer 5 are electrically connected
Connecing, described tank body 1 is connected with the negative electricity of potentiometer 5, each reference electrode 3 and tank body
Connecting voltmeter 4 between 1, voltmeter 4 is connected with control module 6, control module 6
It is connected with host computer 7.
In the present embodiment, impressed current anode 2, reference electrode 3 are four, impressed current anode 2
In the soil layer of the surrounding being uniformly arranged on tank body 1, reference electrode 3 and impressed current anode 2 one
One is correspondingly arranged.
As shown in Figure 3 and Figure 4, each reference electrode 3 passes sequentially through and is embedded in soil layer
Pipeline 13 series connection forms loop, and pipeline 13 is all provided with between adjacent two reference electrodes 3
There is two-way pump 14, pipeline 13 is marked with copper-bath 12, also sets on pipeline 13 in addition
There are filter 15, register 16.Filter 15 can filter copper-bath 12
Interior impurity, it is to avoid semipermeable membrane 11 blocking and the upper dirt of copper electrode 9 surface bonding, makes survey
It is more accurate to measure.
Register 16 can control solution temperature to prevent because of copper-bath during low temperature
12 freeze and have influence on the normal work of reference electrode 3.In order to prevent because of copper-bath
The 12 dry normal work having influence on reference electrode 3.
Being additionally provided with an arm 17 elevated above the soil on pipeline 13, the upper end of arm 17 has
Filling opening 19 and valve 18.
Specifically, each reference electrode 3 all includes the container 8 of cylindrical shape, copper electrode 9
With p-wire 10, equipped with copper-bath 12 in container 8, copper electrode 9 upper end and container
8 upper ends are connected with p-wire 10, and p-wire 10 passes container 8 upper end, copper electrode 9
Lower end is provided with semipermeable membrane 11 and immerses copper-bath 12.By arranging pipeline 13 He
Two-way pump 14, can control the distribution of copper-bath 12 between four reference electrodes 3,
So can ensure that the concordance of copper-bath 12 in all reference electrodes 3, increase sulfur
The flowing of acid copper solution 12 so that solution each several part is uniform, it is also possible to prevent semipermeable membrane
The inaccurate problem of measurement that the blocking of 11 and the upper dirt of copper electrode 9 surface bonding cause,
When the amount of solution is depleted to less, copper-bath 12 can be pumped into a reference
In electrode 3, it is achieved single measurement successively, so can increase service life.
As it is shown in figure 5, control module 6 include AD Sampling Interface 20, controller 21,
Power supply 22, clock unit 23, the logical block that powers on 24, memory element 25 and serial ports list
Unit 26, AD uses Interface and Controler 21 to connect, and clock unit 23 is patrolled with powering on respectively
Collecting unit 24 and control to connect, the logical block that powers on 24 is also connected with power supply 22 and controls
Power supply 22 powers on to controller 21, and controller 21 is by serial port unit 26 and host computer
7 connect.By controller 21 can incessantly automatically the negative electrode of tour inspection tank body 1 protect
The primary operating parameter of protecting system, and automatic storage measurement result, pass through host computer simultaneously
7 in real time display and printouts, can and alarm, it is simple to take measures, be to ensure that
The important guarantee that storage tank facility is properly functioning, eliminate safe hidden trouble.
Specific embodiment described herein is only to present invention spirit theory for example
Bright.Those skilled in the art can be to described specific embodiment
Make various amendment or supplement or use similar mode to substitute, but without departing from
The spirit of the present invention or surmount scope defined in appended claims.
Claims (8)
1. a cathodic protection automatic monitoring system for petroleum storage tank, petroleum storage tank has tank
Body (1), it is characterised in that described cathodic protection automatic checkout system includes some auxiliary
Anode (2), some reference electrodes (3), voltmeter (4), potentiometer (5), control
Module (6) and host computer (7), each impressed current anode (2) is all with potentiometer (5) just
Pole electrically connects, and described tank body (1) is connected with the negative electricity of potentiometer (5), each reference
It is connected by voltmeter (4) between electrode (3) with tank body (1), described voltmeter (4)
Being connected with control module (6), described control module (6) is connected with host computer (7).
The cathodic protection of a kind of petroleum storage tank the most according to claim 1 is monitored automatically
System, it is characterised in that the quantity of described impressed current anode (2) is four, is uniformly arranged
In the soil layer of the surrounding of tank body (1), described reference electrode (3) and impressed current anode (2)
One_to_one corresponding is arranged.
The cathodic protection of a kind of petroleum storage tank the most according to claim 1 and 2 is automatic
Monitoring system, it is characterised in that described reference electrode (3) include cylindrical shape container (8),
Copper electrode (9) and p-wire (10), equipped with copper-bath (12) in described container (8),
Described copper electrode (9) upper end is fixed on container (8) upper end and connects with p-wire (10)
Connecing, described p-wire (10) passes container (8) upper end, under described copper electrode (9)
End is provided with semipermeable membrane (11).
The cathodic protection of a kind of petroleum storage tank the most according to claim 1 and 2 is automatic
Monitoring system, it is characterised in that each reference electrode (3) passes sequentially through and is embedded in soil layer
Pipeline (13) connect and form loop, upper adjacent two references of described pipeline (13)
Being provided with two-way pump (14) between electrode (3), described pipeline is marked with copper sulfate in (13)
Solution (12).
The cathodic protection of a kind of petroleum storage tank the most according to claim 4 is monitored automatically
System, it is characterised in that be additionally provided with filter (15) on described pipeline (13).
The cathodic protection of a kind of petroleum storage tank the most according to claim 4 is monitored automatically
System, it is characterised in that be additionally provided with register (16) on described pipeline (13).
The cathodic protection of a kind of petroleum storage tank the most according to claim 4 is monitored automatically
System, it is characterised in that be additionally provided with an arm elevated above the soil on described pipeline (13)
(17), the upper end of described arm (17) has valve (18) and filling opening (19).
The cathodic protection of a kind of petroleum storage tank the most according to claim 1 and 2 is automatic
Monitoring system, it is characterised in that described control module (6) include AD Sampling Interface (20),
Controller (21), power supply (22), clock unit (23), the logical block that powers on (24),
Memory element (25) and serial port unit (26), described AD uses Interface and Controler (21)
Connecting, described clock unit (23) connects with the logical block that powers on (24) and control respectively
Connect, described in the logical block (24) that powers on also be connected with power supply (22) and control power supply (22)
Powering on to controller (21), described controller (21) is by described serial port unit (26)
It is connected with host computer (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610539241.2A CN106011873B (en) | 2016-07-06 | 2016-07-06 | A kind of cathodic protection automatic monitoring system of petroleum storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610539241.2A CN106011873B (en) | 2016-07-06 | 2016-07-06 | A kind of cathodic protection automatic monitoring system of petroleum storage tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106011873A true CN106011873A (en) | 2016-10-12 |
| CN106011873B CN106011873B (en) | 2019-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610539241.2A Active CN106011873B (en) | 2016-07-06 | 2016-07-06 | A kind of cathodic protection automatic monitoring system of petroleum storage tank |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111850570A (en) * | 2020-07-29 | 2020-10-30 | 山东京博石油化工有限公司 | Earthing liquefied hydrocarbon storage tank cathodic protection system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1122845A (en) * | 1994-11-09 | 1996-05-22 | 黄金炮 | Additional current cathode protection system on external bottom sheet of ground steel storage tank |
| CN102677068B (en) * | 2011-03-16 | 2014-11-19 | 中国石油天然气股份有限公司 | Power-off potential detecting device for cathode protection of buried pipeline |
| CN202903233U (en) * | 2012-07-04 | 2013-04-24 | 中国石油天然气股份有限公司 | System for automatically monitoring the parameters of a low temperature type buried oil and gas pipeline |
-
2016
- 2016-07-06 CN CN201610539241.2A patent/CN106011873B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111850570A (en) * | 2020-07-29 | 2020-10-30 | 山东京博石油化工有限公司 | Earthing liquefied hydrocarbon storage tank cathodic protection system |
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| Publication number | Publication date |
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| CN106011873B (en) | 2019-03-15 |
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