CN205643107U - Analogue means of earthing pole stray current to burying ground corrosion of metals - Google Patents
Analogue means of earthing pole stray current to burying ground corrosion of metals Download PDFInfo
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- CN205643107U CN205643107U CN201620243178.3U CN201620243178U CN205643107U CN 205643107 U CN205643107 U CN 205643107U CN 201620243178 U CN201620243178 U CN 201620243178U CN 205643107 U CN205643107 U CN 205643107U
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- 238000005260 corrosion Methods 0.000 title claims abstract description 64
- 230000007797 corrosion Effects 0.000 title claims abstract description 63
- 239000002184 metal Substances 0.000 title claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 26
- 150000002739 metals Chemical class 0.000 title abstract 3
- 238000012360 testing method Methods 0.000 claims description 31
- 230000005540 biological transmission Effects 0.000 claims description 14
- 239000004020 conductor Substances 0.000 claims description 8
- 229920005479 Lucite® Polymers 0.000 claims description 3
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 3
- 238000004088 simulation Methods 0.000 description 17
- 239000002689 soil Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 238000011160 research Methods 0.000 description 9
- 238000003556 assay Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 230000003628 erosive effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910000365 copper sulfate Inorganic materials 0.000 description 2
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical group [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000011532 electronic conductor Substances 0.000 description 2
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000010416 ion conductor Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000007935 neutral effect Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model discloses an analogue means of earthing pole stray current to burying ground corrosion of metals, analogue means of earthing pole stray current to burying ground corrosion of metals, including auxiliary circuit electrode, miniature equal proportion earthing pole model, the auxiliary circuit electrode be the cavity cylinder, miniature equal proportion earthing pole model is the tourus, miniature equal proportion earthing pole model sets up in the centre of a circle of auxiliary circuit electrode department, miniature equal proportion earthing pole model connection is connected to another utmost point of power supply to power supply's an utmost point, auxiliary circuit electrode.
Description
Technical field
This utility model relates to metal erosion protection field, is specifically related to a kind of earthing pole stray electrical current to the analog of corrosion of buried metal and analogy method thereof.
Background technology
Along with actual demands such as the expansion of China's power system scale, the increase of transmitted power, the growth of transmission distance, the networking between asynchronous electrical network and power transmissions, extra-high voltage direct-current transmission is made to be widely used.The extra-high voltage DC transmission system of China all uses bipolar two ends neutral grounding mode, for the bipolar method of operation after putting into serial production, uses monopolar operation when fault, maintenance.When using the one pole the earth method of operation to run, the backward channel as operating current, the big electric current of thousands of peace levels are flowed through earthing pole by direct current grounding pole.Bipolar operation actually can the one pole the earth operation system of independent operating be formed by two, and during operation, the two poles of the earth sense of current in ground is contrary, and when bipolar current is equal, the electric current in earth-return is zero.But the electric current allowing the 1% of no more than rated current when bipolar operation flows through from earthing pole as out-of-balance current.When electric current flows in ground, resistance effect due to soil, can form the earth electric field of certain gradient in ground, the such as grounding net of transformer substation of the metal structure in field, electric power line pole tower grounding body, armouring buried cable, oil and gas pipeline etc. will be affected by earth electric field and electrochemical corrosion is occurred.Owing to buried material is generally metal material, it it is electronic conductor, and soil is the ion conductor of multiple salt composition, when electric energy is changed between electronic conductor and ion conductor, two-phase interface will necessarily occur redox reaction, the operating current to realize the transfer of electricity, when the most either one pole the earth runs, or out-of-balance current during bipolar operation, the pole that electric current flows out all will be as anode generation electrochemical corrosion.This corrosion can accelerate the destruction of buried metal material, is greatly shortened the service life of buried metal material, the safe operation of the buried structures of serious threat.
For a long time, scientific research personnel is to explore the corrosion and protection measure to buried metal of the DC earthing electrode current, needs to be grasped on-the-spot corrosion data and safeguard procedures contrast effect.To this end, scientific research personnel generally requires carries out correlation test near earthing pole location.But grounding electrode electric current is affected by current conversion station method of operation, it is chronically at variable condition, scientific research personnel can not keep for a long time and uninterruptedly measure the correlation test data such as electric current, voltage, waveform, frequency at earthing pole, and as observed obvious metal erosion phenomenon, the longest.And for some corrosion parameters, especially for the research of anti-corrosion measure, need to carry out the contrast test of early stage at laboratory.Existing corrosion simulation test device is by being in the realization of the positive and negative electrode loop at two ends in square soil box to the simulation of stray electrical current, it is impossible to the practical situation that accurate simulation grounding electrode electric current dissipates from polar ring surrounding from inside to outside.There is no any open source literature at present and describe the analog DC earthing pole stray electrical current assay device to corrosion of buried metal.For solving this problem, research and develop a kind of analog DC earthing pole stray electrical current assay device to corrosion of buried metal, the true corrosive environment of analog DC earthing pole, associated erosion and protection test can be completed at laboratory or experimental station, contrast test effect, thus explore corrosion mechanism and means of defence, it is problem the most anxious to be resolved.
Utility model content
This utility model provides a kind of analog DC earthing pole stray electrical current to the assay device of corrosion of buried metal and analogy method thereof, the function of equivalence stray current corrosion environment under the conditions of analog DC earthing pole imbalance stray electrical current and monopolar operation can be realized, have that analog DC earthing pole corrosive environment similarity is high, simple to operate, automaticity advantages of higher.
This utility model is achieved through the following technical solutions:
The earthing pole stray electrical current analog to corrosion of buried metal, including subsidiary loop electrode, miniature equal proportion earthing pole model, it is characterized in that: described subsidiary loop electrode is hollow cylindrical body, miniature equal proportion earthing pole model is torus, miniature equal proportion earthing pole model is arranged on the circle centre position of subsidiary loop electrode, miniature equal proportion earthing pole model is connected to a pole of power supply, and subsidiary loop electrode is connected to another pole of power supply.
The design principle of said structure is: in this utility model, is arranged on by soil in the hollow cavity of subsidiary loop electrode, then by miniature equal proportion earthing pole model, is arranged in soil according to above-mentioned requirements, then on this basis, arranges and bury corrosion sample to be studied underground.
Existing corrosion simulation test device is by being in the realization of the positive and negative electrode loop at two ends in square soil box to the simulation of stray electrical current, it is impossible to the practical situation that accurate simulation grounding electrode electric current dissipates from polar ring surrounding from inside to outside.There is no any open source literature at present and describe the analog DC earthing pole stray electrical current assay device to corrosion of buried metal.For solving this problem, this utility model has researched and developed a kind of analog DC earthing pole stray electrical current assay device to corrosion of buried metal, using the conductor of hollow cylindrical body as subsidiary loop electrode, use torus as miniature equal proportion earthing pole model, the practical situation that energy accurate simulation grounding electrode electric current dissipates from polar ring surrounding from inside to outside, the function of equivalent stray current corrosion environment under the conditions of can realizing analog DC earthing pole imbalance stray electrical current and monopolar operation, there is analog DC earthing pole corrosive environment similarity high, simple to operate, automaticity advantages of higher.Associated erosion and protection test can be completed at laboratory or experimental station.
Described power supply is waveform generator and the waveform amplifier of output non-linear wave power supply.Non-linear wave can include square wave or sinusoidal wave or cosine wave or sawtooth waveforms or shear wave etc., i.e. gets rid of straight wave so that native system can study the impact on corrosive environment of the different wave power supply.Different voltage, electric current, waveform, rate-adaptive pacemaker are set according to test demand, provide power supply support for whole corrosion testing district.The power supply of the corrosion current supply circuit of prior art is generally direct-current switch power supply, the power supply of output is straight wave, in research corrosive environment, the change impact on corrosion coupon of voltage, the grade of electric current, corrosive environment, does not include the impact of waveform in corrosion research.In existing corrosion simulation test device patent, the simulation to stray electrical current is all to be realized by DC source, and corrosion is had an impact by only electric current, voltage.And by earthing pole field test, find that near location, pole, between soil, voltage waveform is in esse, corrosion is had an impact by the shapes and sizes of waveform, so introducing waveform in corrosion simulation test device, there is no any open source literature at present and describing the corrosion testing apparatus of analog DC earthing pole stray electrical current waveform.
Preferably, also including control system, control system also includes the data transmission remote control device that the control device that the signal transmitting device that information collecting device is connected is connected with information collecting device is connected with information collecting device with information collecting device；
Data transmission remote control device be wireless data transmission based on 4G or WIFI far control unit, described waveform generator and waveform amplifier are that whole corrosion testing district provides power supply support, and arrange different voltage, electric current, waveform, rate-adaptive pacemaker according to test demand.Controlling device is that PLC controls device, and described signal transmitting device is used for accepting electric current, voltage signal, and processes this signal and feed back, and described information collecting device gathers voltage, current signal by signal transmitting device, and transmits a signal to control device.
Also including that the second voltmeter, second voltmeter the two poles of the earth are connected on miniature equal proportion earthing pole model, subsidiary loop electrode, the voltage data outfan of the second voltmeter is connected to signal transmitting device；
Also including ammeter, ammeter is connected between miniature equal proportion earthing pole model and power supply, and the current data outfan of ammeter is connected to signal transmitting device；Also including reference electrode, reference electrode is arranged between subsidiary loop electrode, miniature equal proportion earthing pole model, and reference electrode is the lucite cylinder being internally provided with copper-bath.This reference electrode is copper sulfate reference electrode, reference electrode and the first voltmeter with the use of, measure corrosion testing district Potential distribution.
Voltmeter, ammeter can be transferred to signal converter by terminal block.
Described miniature equal proportion earthing pole model is the torus of metallic conductor.
Described subsidiary loop electrode is the cylinder of metallic conductor.
Based on the earthing pole stray electrical current analogy method to the analog of corrosion of buried metal, comprise the following steps:
Power supply output step: the data that control device collects according to instruction and the information collecting device of data transmission remote control device control waveform generator and the electric current of waveform amplifier, voltage, waveform, frequency parameter；
Above-mentioned steps utilizes waveform generator and waveform amplifier to realize the electric current to out-put supply, voltage, waveform, the setting of frequency, and the output of conventional power source is DC source.
Set up stray electrical current environment: miniature equal proportion earthing pole model and subsidiary loop electrode receive waveform generator and the power supply of waveform amplifier output, the anode and cathode terminals that miniature equal proportion earthing pole model and subsidiary loop electrode export as corrosion stray electrical current, it is provided that stray electrical current environment；
Current potential extraction step: according to reference electrode and the first voltmeter, extracting the current potential in corrosion testing district, this step can use prior art, not repeat them here.
This utility model is compared with prior art, have such advantages as and beneficial effect: the function of equivalence stray current corrosion environment under the conditions of analog DC earthing pole imbalance stray electrical current and monopolar operation can be realized, have that analog DC earthing pole corrosive environment similarity is high, simple to operate, automaticity advantages of higher.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by this utility model embodiment, constitutes the part of the application, is not intended that the restriction to this utility model embodiment.In the accompanying drawings:
Fig. 1 is schematic layout pattern of the present utility model.
The parts title of labelling and correspondence in accompanying drawing:
1, data transmission remote control device；2, information collecting device；3, signal transmitting device；4, device is controlled；5, waveform generator and waveform amplifier；6, terminal block；7, ammeter；8, subsidiary loop electrode；9, reference electrode；101, the first voltmeter；102, the second voltmeter；11, miniature equal proportion earthing pole model.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, exemplary embodiment of the present utility model and explanation thereof are only used for explaining this utility model, are not intended as restriction of the present utility model.
Embodiment
As shown in Figure 1, the earthing pole stray electrical current analog to corrosion of buried metal, including subsidiary loop electrode 8, miniature equal proportion earthing pole model 11, it is characterized in that: described subsidiary loop electrode is hollow cylindrical body, miniature equal proportion earthing pole model 11 is torus, miniature equal proportion earthing pole model 11 is arranged on the circle centre position of subsidiary loop electrode, and miniature equal proportion earthing pole model is connected to a pole of power supply, and subsidiary loop electrode is connected to another pole of power supply.
The design principle of said structure is: in this utility model, soil is arranged in the hollow cavity of subsidiary loop electrode, then by miniature equal proportion earthing pole model 11, is arranged in soil according to above-mentioned requirements, again on this basis, arrange and bury corrosion sample to be studied underground.
Existing corrosion simulation test device is by being in the realization of the positive and negative electrode loop at two ends in square soil box to the simulation of stray electrical current, it is impossible to the practical situation that accurate simulation grounding electrode electric current dissipates from polar ring surrounding from inside to outside.There is no any open source literature at present and describe the analog DC earthing pole stray electrical current assay device to corrosion of buried metal.For solving this problem, this utility model has researched and developed a kind of analog DC earthing pole stray electrical current assay device to corrosion of buried metal, using the conductor of hollow cylindrical body as subsidiary loop electrode, use torus as miniature equal proportion earthing pole model, the practical situation that energy accurate simulation grounding electrode electric current dissipates from polar ring surrounding from inside to outside, the function of equivalent stray current corrosion environment under the conditions of can realizing analog DC earthing pole imbalance stray electrical current and monopolar operation, there is analog DC earthing pole corrosive environment similarity high, simple to operate, automaticity advantages of higher.Associated erosion and protection test can be completed at laboratory or experimental station.
Described power supply is waveform generator and the waveform amplifier 5 of output non-linear wave power supply.Non-linear wave can include square wave or sinusoidal wave or cosine wave or sawtooth waveforms or shear wave etc., i.e. gets rid of straight wave so that native system can study the impact on corrosive environment of the different wave power supply.Different voltage, electric current, waveform, rate-adaptive pacemaker are set according to test demand, provide power supply support for whole corrosion testing district.The power supply of the corrosion current supply circuit of prior art is generally direct-current switch power supply, the power supply of output is straight wave, in research corrosive environment, the change impact on corrosion coupon of voltage, the grade of electric current, corrosive environment, does not include the impact of waveform in corrosion research.In existing corrosion simulation test device patent, the simulation to stray electrical current is all to be realized by DC source, and corrosion is had an impact by only electric current, voltage.And by earthing pole field test, find that near location, pole, between soil, voltage waveform is in esse, corrosion is had an impact by the shapes and sizes of waveform, so introducing waveform in corrosion simulation test device, there is no any open source literature at present and describing the corrosion testing apparatus of analog DC earthing pole stray electrical current waveform.
Preferably, also including control system, control system also includes the data transmission remote control device 1 that the control device 4 that the signal transmitting device 3 that information collecting device 2 is connected is connected with information collecting device 2 is connected with information collecting device with information collecting device 2；
Data transmission remote control device be wireless data transmission based on 4G or WIFI far control unit, described waveform generator and waveform amplifier are that whole corrosion testing district provides power supply support, and arrange different voltage, electric current, waveform, rate-adaptive pacemaker according to test demand.Controlling device is that PLC controls device, and described signal transmitting device is used for accepting electric current, voltage signal, and processes this signal and feed back, and described information collecting device gathers voltage, current signal by signal transmitting device, and transmits a signal to control device.
Also including that the second voltmeter 102, second voltmeter the two poles of the earth are connected on miniature equal proportion earthing pole model, subsidiary loop electrode, the voltage data outfan of the second voltmeter 102 is connected to signal transmitting device 3；
Also including that ammeter 7, ammeter 7 are connected between miniature equal proportion earthing pole model and power supply, the current data outfan of ammeter 7 is connected to signal transmitting device 3；
Second voltmeter, ammeter can be transferred to signal converter by terminal block 6.
Also including that reference electrode 9, reference electrode 9 are arranged between subsidiary loop electrode 8, miniature equal proportion earthing pole model 11, reference electrode 9 is the lucite cylinder being internally provided with copper-bath.This reference electrode is copper sulfate reference electrode, with the first voltmeter 101 with the use of, measure corrosion testing district Potential distribution.
Described miniature equal proportion earthing pole model is the torus of metallic conductor.Described subsidiary loop electrode is the cylinder of metallic conductor.
Based on the earthing pole stray electrical current analogy method to the analog of corrosion of buried metal, comprise the following steps:
Power supply output step: the data that control device collects according to instruction and the information collecting device of data transmission remote control device control waveform generator and the electric current of waveform amplifier, voltage, waveform, frequency parameter；
Above-mentioned steps utilizes waveform generator and waveform amplifier to realize the electric current to out-put supply, voltage, waveform, the setting of frequency, and the output of conventional power source is DC source.
Set up stray electrical current environment: miniature equal proportion earthing pole model and subsidiary loop electrode receive waveform generator and the power supply of waveform amplifier output, the anode and cathode terminals that miniature equal proportion earthing pole model and subsidiary loop electrode export as corrosion stray electrical current, it is provided that stray electrical current environment；
Current potential extraction step: according to reference electrode and the first voltmeter, extracting the current potential in corrosion testing district, this step can use prior art, not repeat them here.
Above-described detailed description of the invention; the purpose of this utility model, technical scheme and beneficial effect are further described; it is it should be understood that; the foregoing is only detailed description of the invention of the present utility model; it is not used to limit protection domain of the present utility model; all within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. done, within should be included in protection domain of the present utility model.
Claims (6)
1. the earthing pole stray electrical current analog to corrosion of buried metal, including subsidiary loop electrode (8), miniature equal proportion earthing pole model (11), it is characterized in that: described subsidiary loop electrode is hollow cylindrical body, miniature equal proportion earthing pole model (11) is torus, miniature equal proportion earthing pole model (11) is arranged on the circle centre position of subsidiary loop electrode, miniature equal proportion earthing pole model is connected to a pole of power supply, and subsidiary loop electrode (8) is connected to another pole of power supply.
2. according to the analog to corrosion of buried metal of the earthing pole stray electrical current described in claim 1, it is characterized in that: described power supply is waveform generator and the waveform amplifier (5) of output non-linear wave power supply.
3. according to the analog to corrosion of buried metal of the earthing pole stray electrical current described in claim 1, it is characterized in that: also include data transmission remote control device (1) that the control device (4) that the signal transmitting device (3) that information collecting device (2) is connected is connected with information collecting device (2) is connected with information collecting device (2) with information collecting device (2)；
Also including that the second voltmeter (102), second voltmeter the two poles of the earth are connected on miniature equal proportion earthing pole model, subsidiary loop electrode, the voltage data outfan of the second voltmeter (102) is connected to signal transmitting device (3)；
Also including that ammeter (7), ammeter (7) are connected between miniature equal proportion earthing pole model and power supply, the current data outfan of ammeter (7) is connected to signal transmitting device (3).
4. according to the analog to corrosion of buried metal of the earthing pole stray electrical current described in claim 3, it is characterized in that: also include reference electrode (9), reference electrode (9) is arranged between subsidiary loop electrode (8), miniature equal proportion earthing pole model (11), reference electrode (9) is the lucite cylinder being internally provided with copper-bath, reference electrode and the first voltmeter (101) are with the use of measuring corrosion testing district Potential distribution, and voltage data outfan is connected to signal transmitting device (3).
5., according to the analog to corrosion of buried metal of the earthing pole stray electrical current described in claim 1, it is characterized in that: miniature equal proportion earthing pole model is the torus of metallic conductor.
6., according to the analog to corrosion of buried metal of the earthing pole stray electrical current described in claim 1, it is characterized in that: described subsidiary loop electrode is the cylinder of metallic conductor.
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| CN201620243178.3U CN205643107U (en) | 2016-03-28 | 2016-03-28 | Analogue means of earthing pole stray current to burying ground corrosion of metals |
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| CN201620243178.3U CN205643107U (en) | 2016-03-28 | 2016-03-28 | Analogue means of earthing pole stray current to burying ground corrosion of metals |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842144A (en) * | 2016-03-28 | 2016-08-10 | 国网四川省电力公司电力科学研究院 | Simulation apparatus of buried metal corrosion due to ground pole stray current and simulation method thereof |
| CN107784967A (en) * | 2017-10-30 | 2018-03-09 | 南京中电熊猫平板显示科技有限公司 | The detection means and its detection method of display apparatus |
-
2016
- 2016-03-28 CN CN201620243178.3U patent/CN205643107U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842144A (en) * | 2016-03-28 | 2016-08-10 | 国网四川省电力公司电力科学研究院 | Simulation apparatus of buried metal corrosion due to ground pole stray current and simulation method thereof |
| CN105842144B (en) * | 2016-03-28 | 2018-12-25 | 国网四川省电力公司电力科学研究院 | Simulator and its analogy method of the earthing pole stray electrical current to corrosion of buried metal |
| CN107784967A (en) * | 2017-10-30 | 2018-03-09 | 南京中电熊猫平板显示科技有限公司 | The detection means and its detection method of display apparatus |
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