CN202543330U - Potentiostat - Google Patents
Potentiostat Download PDFInfo
- Publication number
- CN202543330U CN202543330U CN2012200248959U CN201220024895U CN202543330U CN 202543330 U CN202543330 U CN 202543330U CN 2012200248959 U CN2012200248959 U CN 2012200248959U CN 201220024895 U CN201220024895 U CN 201220024895U CN 202543330 U CN202543330 U CN 202543330U
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Abstract
The utility model discloses a potentiostat. The potentiostat comprises a singlechip processing chip, an on/off control chip and a constant potential control chip, wherein the on/off control chip is used for receiving an on/off signal of the singlechip processing chip and controlling opening and closing of an on/off control switch according to an on/off signal; and the constant potential control chip is connected with a flexible anode through an anode cable via the on/off control switch, is connected with a buried pipeline through a cathode cable and is used for detecting whether the off-potential of the buried pipeline is consistent with a preset cathode protection potential in the off time period and adjusting the off-potential of the buried pipeline to the cathode protection potential under the condition that the off-potential is inconsistent with the cathode protection potential. According to the potentiostat, the influence of IR drop on the cathode protection of the flexible anode can be eliminated, so that the pipeline is positioned in a cathode protection range relative to the potential of a reference electrode.
Description
Technical field
The utility model relates to electronic applications, in particular to a kind of potentiostat.
Background technology
At present, flexible anode is in the pipeline of oil gas and the consumption sharp increase of a station galvanic protection, and the increase along with flexible anode is used also exposes some problems, mainly is that problem falls in the IR of flexible anode galvanic protection.
Because when measuring the above earth potential of buried metal facility (such as pipeline); Certain distance is always arranged between reference electrode and the metallic facility; Therefore have a resistance R, and the various electric currents in the earth that exists between 2 (mainly being the cloudy electric current of protecting) multiply each other, be IR and fall.Because error falls in the IR that in the measurement of protection potential, exists various electric currents and resistance to produce, and relates to electric current and mainly contains: measurement electric current, protective current, and the stray current that possibly exist, secondary current etc.; Relating to resistance has: soil is by way of resistance, the various resistance in holiday place and various impedances etc. under the exchange current effect.In the serious zone of stray current with in the western soil resistivity upper zone of China, owing to caused the error of buried metal facility above earth potential, so IR falls and often becomes the buried pipeline galvanic protection most thorny issue.
In addition, because flexible anode lays near the buried metal facility, can make that also the strength of electric field around it is very big, so the problem that IR falls is more outstanding.And, because flexible anode makes that along by the characteristic of protection pipelining flexible anode locality protection hop count is many, cause the anode way too much, strengthened the cost of existing conventional potentiostat.
To in the buried pipeline protection process of correlation technique, the problem that the IR that the flexible anode galvanic protection exists falls does not propose effective solution at present as yet at present.
The utility model content
In the buried pipeline protection process to correlation technique; The problem that the IR that the flexible anode galvanic protection exists falls; Do not propose effective solution as yet at present and propose the utility model; For this reason, the main purpose of the utility model is to provide the control method and the device of a kind of potentiostat, pipe-to-soil potential, to address the above problem.
To achieve these goals, an aspect according to the utility model provides a kind of potentiostat, and this potentiostat comprises: the micro-chip process chip; Make-and-break control switch; The break-make control chip is used to receive the make-and-break signal of micro-chip process chip, and according to the opening and closing of make-and-break signal control make-and-break control switch; The constant potential control chip; Be connected with flexible anode via make-and-break control switch through anode cable; Be connected with buried pipeline through cathode cable; Whether with preset cathodic protection potential consistent, and under switch-off potential and the inconsistent situation of cathodic protection potential if being used to detect the switch-off potential of buried pipeline in the power-off time section, the switch-off potential of buried pipeline is adjusted to cathodic protection potential; Wherein, the constant potential control chip obtains the power-off time section according to make-and-break signal, and the circuit loop of buried pipeline and flexible anode breaks off in the power-off time section.
Further, the constant potential control chip is connected with reference electrode through the reference electrode cable, and in the power-off time section, the constant potential control chip detects and obtains switch-off potential, and switch-off potential is the current potential of buried pipeline with respect to reference electrode.
Further, potentiostat also comprises: pattern is switched chip, is connected between constant potential control chip and the make-and-break control switch pipe-to-soil potential that is used to control constant potential control chip detection starting and adjusts buried pipeline.
Further, the time that the micro-chip process chip is sent make-and-break signal through control is set the opening time length and the shut length of make-and-break control switch, and shut length is the power-off time section.
To achieve these goals; According to the utility model on the other hand; A kind of control method of pipe-to-soil potential is provided, and this method comprises: under the situation that the make-and-break control switch on buried pipeline and the flexible anode loop breaks off, read the switch-off potential of buried pipeline; Whether detect the switch-off potential of buried pipeline in the power-off time section consistent with preset cathodic protection potential; And under switch-off potential and the inconsistent situation of cathodic protection potential; The switch-off potential of buried pipeline is adjusted to cathodic protection potential; Wherein, the power-off time section is the time span that the circuit loop of pipeline and flexible anode is in off-state.
Further, before the make-and-break control switch on buried pipeline and the flexible anode loop broke off, method also comprises: the micro-chip process chip was sent make-and-break signal; The break-make control chip receives make-and-break signal, and controls make-and-break control switch according to the cut-off signal in the make-and-break signal and break off.
Further; The constant potential control chip is connected with reference electrode through the reference electrode cable; In the power-off time section, buried pipeline is fed back to the constant potential control chip with respect to the current potential of reference electrode as switch-off potential, wherein; Detect the switch-off potential of buried pipeline in the power-off time section whether with preset consistent comprising of cathodic protection potential: judge switch-off potential whether with the cathodic protection potential unanimity of setting; Wherein, under the switch-off potential situation consistent, confirm that switch-off potential is in the cathode protecting state of setting with cathodic protection potential; Under switch-off potential and the inconsistent situation of cathodic protection potential, switch-off potential is adjusted to consistent with cathodic protection potential.
To achieve these goals; According to the utility model on the other hand, a kind of gear of pipe-to-soil potential is provided, this device comprises: read module; Be used under the situation that the make-and-break control switch on buried pipeline and the flexible anode loop breaks off, reading the switch-off potential of buried pipeline; Processing module; Whether be used to detect the switch-off potential of buried pipeline in the power-off time section consistent with preset cathodic protection potential; And under switch-off potential and the inconsistent situation of cathodic protection potential; The switch-off potential of buried pipeline is adjusted to cathodic protection potential, and wherein, the power-off time section is the time span that the circuit loop of pipeline and flexible anode is in off-state.
Further, device also comprises: control module is used for the break-make control chip and receives the make-and-break signal that is sent by the micro-chip process chip, and controls make-and-break control switch according to the cut-off signal in the make-and-break signal and break off.
Further; The constant potential control chip is connected with reference electrode through the reference electrode cable, and in the power-off time section, the constant potential control chip detects and obtains switch-off potential; Switch-off potential is the current potential of buried pipeline with respect to reference electrode; Wherein, processing module comprises: judge module is used to judge whether switch-off potential is consistent with the cathodic protection potential of setting; Confirm module, be used under the switch-off potential situation consistent that the affirmation switch-off potential is in the cathode protecting state of setting with cathodic protection potential; Adjusting module is used under switch-off potential and the inconsistent situation of cathodic protection potential, switch-off potential being adjusted to consistent with cathodic protection potential.
Through the utility model, adopt the micro-chip process chip; Make-and-break control switch; Make-and-break control switch; The break-make control chip is used to receive the make-and-break signal of micro-chip process chip, and according to the opening and closing of make-and-break signal control make-and-break control switch; The constant potential control chip; Be connected with flexible anode via make-and-break control switch through anode cable; Be connected with buried pipeline through cathode cable; Whether with preset cathodic protection potential consistent, and under switch-off potential and the inconsistent situation of cathodic protection potential if being used to detect the switch-off potential of buried pipeline in the power-off time section, the switch-off potential of buried pipeline is adjusted to cathodic protection potential; Wherein, The constant potential control chip obtains the power-off time section according to make-and-break signal; The circuit loop of buried pipeline and flexible anode breaks off in the power-off time section, has solved in the buried pipeline protection process of related art the problem that the IR that the flexible anode galvanic protection exists falls; And then realize that having eliminated IR falls the influence to the galvanic protection of flexible anode, makes pipeline be in the effect in the galvanic protection scope with respect to the current potential of reference electrode.
Description of drawings
Accompanying drawing described herein is used to provide the further understanding to the utility model, constitutes the application's a part, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 is the structural representation according to the potentiostat of the utility model embodiment;
Fig. 2 is the electrical block diagram according to the potentiostat of the utility model embodiment;
Fig. 3 is the schema according to the control method of the pipe-to-soil potential of the utility model embodiment;
Fig. 4 is the detail flowchart according to the control method of the pipe-to-soil potential of the utility model embodiment; And
Fig. 5 is the structural representation according to the gear of the pipe-to-soil potential of the utility model embodiment.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the utility model.
Fig. 1 is the structural representation according to the potentiostat of the utility model embodiment; Fig. 2 is the electrical block diagram according to the potentiostat of the utility model embodiment.
As shown in Figure 1, this potentiostat comprises: the micro-chip process chip; The break-make control chip is used to receive the make-and-break signal of micro-chip process chip, and according to the opening and closing of make-and-break signal control make-and-break control switch; The constant potential control chip; Be connected with flexible anode via make-and-break control switch through anode cable; Be connected with buried pipeline through cathode cable; Whether with preset cathodic protection potential consistent, and under switch-off potential and the inconsistent situation of cathodic protection potential if being used to detect the switch-off potential of buried pipeline in the power-off time section, the switch-off potential of buried pipeline is adjusted to cathodic protection potential; Wherein, the constant potential control chip obtains the power-off time section according to make-and-break signal, and the circuit loop of buried pipeline and flexible anode breaks off in the power-off time section.
The application's the foregoing description has increased make-and-break control switch between constant potential control chip and flexible anode; The make-and-break signal that this make-and-break control switch is sent by the micro-chip process chip is controlled; Promptly on the basis of conventional potentiostat function, increased permanent switch-off potential function; Making the current potential of buried pipeline can not produce under the situation that IR falls at one is able to adjust in the galvanic protection scope; Final realization has been eliminated IR and has been fallen the influence to the galvanic protection of flexible anode, makes pipeline be in the best galvanic protection scope with respect to the current potential of reference electrode.
In the application's the foregoing description, the constant potential control chip is connected with reference electrode through the reference electrode cable, and in the power-off time section, the constant potential control chip detects and obtains switch-off potential, and switch-off potential is the current potential of buried pipeline with respect to reference electrode.Concrete; Power-off time section among the application embodiment can be an of short duration power-off time, can be 3s usually, in this time period, comes the current potential of measuring channel with respect to reference electrode; And it is fed back to the constant potential control chip as feedback signal, realize adjustment accurately.
Potentiostat in the application's the foregoing description can also comprise: pattern is switched chip, is connected between constant potential control chip and the make-and-break control switch, is used to control whether detection starting and adjust the switch-off potential of buried pipeline of constant potential control chip.
Preferably, the time that the micro-chip process chip is sent make-and-break signal through control is set the opening time length and the shut length of make-and-break control switch, and shut length is the power-off time section.Concrete; Can know by Fig. 2; The micro-chip process chip is controlled the break-make control chip through sending make-and-break signal; Make the closed or disconnection of break-make control chip to begin to detect the current potential that does not have buried pipeline under the current conditions thereby when switch breaks off, start with make-and-break control switch, and within switch-off potential to the negative electrode protection domain according to the switch-off potential adjustment buried pipeline that obtains.
And, when the constant potential function breaks down,, need manual received current controlling valu at the potentiostat of routine though can jump to the continuous current function automatically.The application is through increasing data automatic recording, memory function; And can be through USB mouth output result; Make under the situation that the constant potential function breaks down; Instrument will be gone up the MV of potentiostat outward current in the week automatically as the current control value, get under the constant current mode and work, and realize the non-maintaining of equipment.
Fig. 3 is the schema according to the control method of the pipe-to-soil potential of the utility model embodiment; Fig. 4 is the detail flowchart according to the control method of the pipe-to-soil potential of the utility model embodiment.
This method as shown in Figure 3 comprises the steps:
Step S102, potentiostat shown in Figure 1 read the switch-off potential of buried pipeline under the situation that the make-and-break control switch on buried pipeline and the flexible anode loop breaks off.
Step S104; Whether the switch-off potential of potentiostat detection starting buried pipeline in the power-off time section shown in Figure 1 be consistent with preset cathodic protection potential; And under switch-off potential and the inconsistent situation of cathodic protection potential, the switch-off potential of buried pipeline is adjusted to cathodic protection potential.Wherein, the power-off time section is the time span that the circuit loop of pipeline and flexible anode is in off-state.
The application's the foregoing description has increased make-and-break control switch between constant potential control chip and flexible anode; The make-and-break signal that this make-and-break control switch is sent by the micro-chip process chip is controlled; Promptly on the basis of conventional potentiostat function, increased permanent switch-off potential function; Making the current potential of buried pipeline can not produce under the situation that IR falls at one is able to adjust in the galvanic protection scope; Final realization has been eliminated IR and has been fallen the influence to the galvanic protection of flexible anode, makes pipeline be in the best galvanic protection scope with respect to the current potential of reference electrode.
Concrete, the preset cathodic protection potential in the application's the foregoing description can be in the galvanic protection scope value, promptly cathodic protection potential can be-0.85V～-any value between the 1.5V.
In the application's the foregoing description, before the make-and-break control switch on buried pipeline and the flexible anode loop broke off, method can also comprise: the micro-chip process chip was sent make-and-break signal; The break-make control chip receives this make-and-break signal, and controls make-and-break control switch according to the cut-off signal in the make-and-break signal and break off.
In the application's the foregoing description; The constant potential control chip is connected with reference electrode through the reference electrode cable, and in the power-off time section, the constant potential control chip detects and obtains switch-off potential; Switch-off potential is the current potential of buried pipeline with respect to reference electrode; Wherein, whether the switch-off potential of detection buried pipeline in the power-off time section is in the galvanic protection scope can comprise: judge whether switch-off potential is consistent with preset cathodic protection potential, wherein; Under the switch-off potential situation consistent with cathodic protection potential, switch-off potential is in cathode protecting state; Under switch-off potential and the inconsistent situation of cathodic protection potential, switch-off potential is adjusted to consistent with cathodic protection potential.
Concrete; Can know in conjunction with Fig. 3 and 4; The application's the foregoing description has increased micro-chip control on/off electric work ability on the basis of conventional constant potential function, can be designed as to be respectively make-and-break control switch making time and turn-off time 12s and 3s (can other break-makes electricity durations be set according to practical situation), and in the power-off time that make-and-break control switch breaks off, measure the current potential of buried pipeline with respect to reference electrode; It is switch-off potential; Because this moment, electric current I was 0, so IR reduces to 0, falls the influence to the galvanic protection of flexible anode thereby eliminated IR.
In conjunction with Fig. 2 and shown in Figure 4, the application adopts singlechip control chip to control, when operating mode switches to the constant potential operating mode; And change-over switch is when being connected on the constant potential control chip; Make-and-break signal that singlechip control chip sends indication break-make control chip is controlled make-and-break control switch and is broken off, thereby begins to start the test of cutting off the power supply, and the switch-off potential of the buried pipeline that records is at this moment fed back to after the constant potential control chip as feedback signal; Value through with the cathodic protection potential of setting compares the pipe-to-soil potential that determines whether to adjust buried pipeline; If comparative result unanimity then do not need adjustment otherwise is adjusted into cathodic protection potential with switch-off potential, finally fall under the situation of influence eliminating IR; Pipeline is in the galvanic protection scope with respect to the current potential of reference electrode, realizes the function of permanent switch-off potential.
And compare with traditional distributed anode cathode protection technology far away; The maximum advantage of flexible anode galvanic protection is that current efficiency is high, and the electric current leakage is few, therefore; Actual power consumption amount during flexible anode work is very little; Can use sun-generated electric power fully, and in the process of circuit layout, take into full account requirements of saving energy.Make our potentiostat realize miniaturized, practiced thrift the equipment cost of potentiostat.
The permanent switch-off potential function that the application provides can realize the function of switch-off potential as constant controlling valu except the perseverance energising current potential of routine with the continuous current function, eliminate the influence that error falls in IR.But also fault continuous current function can be provided, make that under the situation that the constant potential function breaks down, instrument jumps to the continuous current function automatically, and the constant current value is in week in the past, the MV of the outward current of instrument record.Automatic measurement in addition exchanges the interfering voltage function, for the influence of 50HZ alternating-current, can realize measuring automatically the voltage of alternating current that it generates on pipeline.The record of service data, storage and output make potentiostat have the automatic data logging memory function, and can be through USB interface output.
Need to prove; Can in computer system, carry out in the step shown in the schema of accompanying drawing such as a set of computer-executable instructions; And; Though logical order has been shown in schema, in some cases, can have carried out step shown or that describe with the order that is different from here.
Fig. 5 is the structural representation according to the gear of the pipe-to-soil potential of the utility model embodiment.
As shown in Figure 5, the gear of this pipe-to-soil potential comprises: read module 10 is used under the situation that the make-and-break control switch on buried pipeline and the flexible anode loop breaks off, reading the switch-off potential of buried pipeline; Processing module 30; Whether be used to detect the switch-off potential of buried pipeline in the power-off time section consistent with preset cathodic protection potential; And under switch-off potential and the inconsistent situation of cathodic protection potential; The switch-off potential of buried pipeline is adjusted to cathodic protection potential, and wherein, the power-off time section is the time span that the circuit loop of pipeline and flexible anode is in off-state.
Preferably, the device in the application's the foregoing description can also comprise: control module 50 is used for the break-make control chip and receives the make-and-break signal that is sent by the micro-chip process chip, and controls make-and-break control switch according to the cut-off signal in the make-and-break signal and break off.
Preferably; The constant potential control chip is connected with reference electrode through the reference electrode cable in the application's the foregoing description; In the power-off time section, buried pipeline is fed back to the constant potential control chip with respect to the current potential of reference electrode as switch-off potential, wherein; Processing module can comprise: judge module 301 is used to judge whether switch-off potential is consistent with the cathodic protection potential of setting; Confirm module 302, be used under the switch-off potential situation consistent that switch-off potential is in the cathode protecting state of setting with cathodic protection potential; Adjusting module 303 is used under switch-off potential and the inconsistent situation of cathodic protection potential, switch-off potential being adjusted to consistent with cathodic protection potential.
From above description; Can find out; The utility model has been realized following technique effect: the application has developed the potentiostat with permanent switch-off potential output, automatic data logging store function, fault continuous current function and other general utility functionss to the problems referred to above that exist in the flexible anode galvanic protection; In addition, the application adopts sun power as the equipment energy, both can satisfy the needs in no alternating-current zone, also meets the target that national development utilizes green energy resource.Can give full play to the technical superiority of flexible anode after this equipment comes into operation, overcome the engineering deficiency that exists in its application, and the system of realization be non-maintaining.
Compare with traditional distributed anode cathode protection technology far away; The maximum advantage of flexible anode galvanic protection is that current efficiency is high; Electric current leakage is few, realizes the miniaturized of potentiostat in view of the above, and with sun power as power supply; Not only can effectively practice thrift the cost of potentiostat, also meet the strategy of national development green energy resource.
More than be merely the preferred embodiment of the utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (3)
1. a potentiostat is characterized in that, comprising:
The micro-chip process chip;
Make-and-break control switch;
The break-make control chip is used to receive the make-and-break signal of said micro-chip process chip, and controls the opening and closing of said make-and-break control switch according to said make-and-break signal;
The constant potential control chip; Be connected with flexible anode via said make-and-break control switch through anode cable; Whether be connected with buried pipeline through cathode cable, it is consistent with preset cathodic protection potential to be used to detect the switch-off potential of said buried pipeline in the power-off time section, and under said switch-off potential and the inconsistent situation of said cathodic protection potential; The switch-off potential of said buried pipeline is adjusted to said cathodic protection potential
Wherein, said constant potential control chip obtains the power-off time section according to said make-and-break signal, and the circuit loop of said buried pipeline and said flexible anode breaks off in said power-off time section.
2. potentiostat according to claim 1; It is characterized in that; Said constant potential control chip is connected with reference electrode through the reference electrode cable; In said power-off time section, said constant potential control chip detects and obtains said switch-off potential, and said switch-off potential is the current potential of said buried pipeline with respect to said reference electrode.
3. potentiostat according to claim 2 is characterized in that, said potentiostat also comprises:
Pattern is switched chip, is connected between said constant potential control chip and the said make-and-break control switch pipe-to-soil potential that is used to control said constant potential control chip detection starting and adjusts said buried pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200248959U CN202543330U (en) | 2012-01-18 | 2012-01-18 | Potentiostat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200248959U CN202543330U (en) | 2012-01-18 | 2012-01-18 | Potentiostat |
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| CN202543330U true CN202543330U (en) | 2012-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200248959U Expired - Lifetime CN202543330U (en) | 2012-01-18 | 2012-01-18 | Potentiostat |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397877A (en) * | 2013-08-13 | 2013-11-20 | 成都希能能源科技有限公司 | Position finder |
| CN104818487A (en) * | 2015-04-22 | 2015-08-05 | 中交四航工程研究院有限公司 | Discontinuous power supply switch power combined potentiostat |
| CN104947118A (en) * | 2015-06-17 | 2015-09-30 | 中国石油天然气股份有限公司 | Flexible anode breakpoint detecting method |
| CN109208009A (en) * | 2018-09-26 | 2019-01-15 | 江苏清源管道技术有限公司 | A kind of pipeline corrosion protection system of metro area |
-
2012
- 2012-01-18 CN CN2012200248959U patent/CN202543330U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397877A (en) * | 2013-08-13 | 2013-11-20 | 成都希能能源科技有限公司 | Position finder |
| CN103397877B (en) * | 2013-08-13 | 2016-08-10 | 成都希能能源科技有限公司 | A kind of position finder |
| CN104818487A (en) * | 2015-04-22 | 2015-08-05 | 中交四航工程研究院有限公司 | Discontinuous power supply switch power combined potentiostat |
| CN104947118A (en) * | 2015-06-17 | 2015-09-30 | 中国石油天然气股份有限公司 | Flexible anode breakpoint detecting method |
| CN104947118B (en) * | 2015-06-17 | 2017-12-01 | 中国石油天然气股份有限公司 | A kind of flexible anode breaking point detection method |
| CN109208009A (en) * | 2018-09-26 | 2019-01-15 | 江苏清源管道技术有限公司 | A kind of pipeline corrosion protection system of metro area |
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Granted publication date: 20121121 |