CN206192857U - Can realize electrochemical corrosion testing arrangement under different dissolved oxygen content conditions - Google Patents
Can realize electrochemical corrosion testing arrangement under different dissolved oxygen content conditions Download PDFInfo
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- CN206192857U CN206192857U CN201621133800.1U CN201621133800U CN206192857U CN 206192857 U CN206192857 U CN 206192857U CN 201621133800 U CN201621133800 U CN 201621133800U CN 206192857 U CN206192857 U CN 206192857U
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- dissolved oxygen
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- oxygen
- oxygen content
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Abstract
The utility model provides a can realize electrochemical corrosion testing arrangement under different dissolved oxygen content conditions. The device is including electrochemistry workstation, beaker, nitrogen cylinder, oxygen cylinder, oxygen glass rotameter, nitrogen gas glass rotameter, gas outlet dish, dissolved oxygen measuring apparatu and digital signal controller. Oxygen cylinder and nitrogen cylinder are through providing oxygen and nitrogen gas for the testing liquid to reach the mesh that increases or reduce dissolved oxygen content. The dissolved oxygen content of testing liquid in the dissolved oxygen measuring apparatu real -time measurement beaker to transmit digital signal controller with the monitor signal, signal controller adjusts the glass rotameter and then the flow of control oxygen and nitrogen gas entering testing liquid through valve door controller's rotation. The gas outlet dish is used for smooth outflow oxygen and nitrogen gas. Dissolved oxygen content obtains accuracy, automatic control steadily in this method and the device assurance test solution, provides the precondition for making power consumption chemical approach measure the dissolved oxygen to corrosion of metals's influence.
Description
Technical field
Under the conditions of the utility model is related to a kind of corrosion tester, more particularly to one kind can realize different dissolved oxygen content
Electrochemical corrosion test device.
Background technology
At present, the known corrosion tester for being related to dissolved oxygen content is made up of nitrogen cylinder and beaker.By nitrogen cylinder
It is only capable of removing intrinsic dissolved oxygen in testing liquid, therefore dissolved oxygen content in solution is by solution initial dissolution oxygen content limit
System, measurement range is limited.And only by the outlet valve adjusting gas flow on nitrogen cylinder, outlet pressure is difficult to control to, leads
Cause to be likely to occur larger bubble in testing liquid, cause solution to be splashed to outside beaker when serious.Nitrogen flows out from single pipeline, gas
Bubble is risen in beaker surface process from bottom of the beaker, and the nitrogen amount absorbed by solution is limited, causes to waste.Cannot in process of the test
The dissolved oxygen content in Control experiment solution influences the accuracy of result of the test on stability number in real time.
Utility model content
It is molten in order to overcome electrochemical corrosion method of testing and device under the conditions of existing different dissolved oxygen content to exist
Solution oxygen content scope is small, the deficiency that gas flow is difficult to control to the aspect such as unstable with bubble, and the utility model provides a kind of energy
The electrochemical corrosion test device of different dissolved oxygen content condition is realized, the device can not only widen controllable dissolved oxygen content model
Enclose, and gas flow can be automatically adjusted, and bubble is flowed out in outlet fine uniform, there is provided reliable and stable electrochemical test
Test environment.
The utility model solves the technical scheme that its technical problem used：
Including electrochemical workstation, beaker, nitrogen cylinder, oxygen cylinder, oxygen glass rotameter, nitrogen glass rotors stream
Gauge, gas vent disk, dissolved oxygen sensing instrument and digital signal controller, oxygen cylinder, oxygen glass rotameter, gas go out
Mouth disk is sequentially communicated；Nitrogen cylinder, nitrogen glass rotameter, gas vent disk are sequentially communicated；Testing liquid is contained in beaker,
Gas vent disk is placed in beaker bottom, and beaker mouthful is sealed by beaker cover；Electrochemical workstation and working electrode, reference electrode and
Auxiliary electrode is connected, and working electrode, reference electrode and auxiliary electrode are stretched into beaker in testing liquid；Dissolved oxygen sensing instrument
One end connection probe, probe is extend into inside testing liquid, the other end connection digital signal controller of dissolved oxygen sensing instrument, number
Word signal controller is connected with valve positioner, valve positioner control oxygen glass rotameter and nitrogen glass rotors stream
The flow of gauge.
Described gas vent disk profile is discoid, and gas vent disk diameter is less than beaker internal diameter, gas vent disk point
Upper and lower two mutually isolated sheaf spaces, upper strata is connected with oxygen intake, and has multiple sizes less than the outlet of entrance；Lower floor and nitrogen
Gas entrance is connected, and nitrogen is excluded in outlet disk upper surface by some tiny vertical tubes.
The described gas vent face of trying to get to the heart of a matter is provided with sucker, and sucker suction is in beaker bottom.
Described beaker cover is drilled with multiple holes, and beaker cover passes through silica gel sealing hole edge.
Described digital signal controller is the microcomputer with programmable functions.
Method of testing of the present utility model comprises the steps：
Dissolved oxygen content numerical value needed for experiment is set in digital signal controller, the valve on oxygen cylinder and nitrogen cylinder is opened
Door；Dissolved oxygen sensing instrument reads the dissolved oxygen content in current test solution in process of the test, and number is transferred in electrical signal form
Word signal controller, if the dissolved oxygen content of measurement is less than preset value, oxygen glass is increased by control valve controller
Oxygen flow in glass spinner flowmeter, simultaneously closes off nitrogen valve, rises to dissolved oxygen in testing liquid dense needed for experiment
Degree；If the dissolved oxygen content of measurement is higher than preset value, nitrogen glass rotors flow is increased by control valve controller
Nitrogen flow in meter, simultaneously closes off oxygen valve, and dissolved oxygen drops to concentration needed for experiment in making testing liquid.
The utility model has the advantages of as follows：
1st, oxygen flow pipe and nitrogen flow pipe are introduced in beaker, by controlling the relative discharge of oxygen and nitrogen,
Change of the dissolved oxygen content in larger concentration range can be realized, to carry out dissolved oxygen content change grinding on material corrosion influence
Offer condition is provided.
2nd, introducing dissolved oxygen sensing instrument probe in beaker, the dissolved oxygen content in energy real-time monitoring testing liquid, and according to
The reading of measuring instrument, by digital signal controller and valve positioner feedback regulation nitrogen and oxygen flow.
3rd, beaker cover is drilled with multiple holes, for connecting three electrodes, gas inlet line and dissolved oxygen sensing instrument wire, and
Internal solution can be made to completely cut off air by silica gel sealing.
4th, nitrogen cylinder, oxygen cylinder be with gas vent disk after glass rotameter respectively by being connected, by Valve controlling
Device controls glass rotameter valve, can realize the stability contorting of gas outflow pressure, flow.
5th, gas vent disk has two entrances, and multiple outlet can divide entrance pipe uniform flow equally, burn gas
The different parts uniform and delicate ground outflow of cup bottom, dissolves in testing liquid, reduces the interference to test system.
Brief description of the drawings
Fig. 1 is the total schematic diagram of the utility model.
Fig. 2 is the top view of beaker cover in the utility model.
Fig. 3 is the operation principle schematic diagram of gas vent disk in the utility model.
Wherein down arrow represents gas access, and gas vent is represented to upward arrow, and filled arrows represent oxygen, hollow arrow
Head represents nitrogen.
Device is configured in figure：1st, electrochemical workstation；2nd, auxiliary electrode interface；3rd, working electrode interface；4th, reference electricity
Pole interface；5th, dissolved oxygen sensing instrument；6th, pop one's head in；7th, auxiliary electrode；8th, reference electrode；9th, working electrode；10th, gas vent disk；
11st, beaker；12nd, beaker cover；13rd, nitrogen glass rotameter；14th, oxygen glass rotameter；15th, flowmeter support；
16th, nitrogen inlet tube；17th, oxygen inlet tube；18th, nitrogen outlet pipe；19th, oxygen outlet pipe；20th, nitrogen cylinder；21st, oxygen cylinder；
22nd, digital signal controller；23rd, valve positioner；24th, working electrode jack；25th, auxiliary electrode jack；26th, reference electrode is inserted
Hole；27th, dissolved oxygen sensing instrument probe jack；28th, oxygen inlet tube jack；29th, nitrogen inlet tube jack；30th, sucker.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment is described in further detail to the utility model patent.
Embodiment
As shown in figure 1, including electrochemical workstation 1, beaker 11, nitrogen cylinder 20, oxygen cylinder 21, oxygen glass rotors flow
Meter 14, nitrogen glass rotameter 13, gas vent disk 10, dissolved oxygen sensing instrument 5 and digital signal controller 22, oxygen cylinder
21st, oxygen outlet pipe 19, oxygen glass rotameter 14, oxygen inlet tube 17, gas vent disk 10 are sequentially communicated；Nitrogen cylinder
20th, nitrogen outlet pipe 18, nitrogen glass rotameter 13, nitrogen inlet tube 16, gas vent disk 10 are sequentially communicated, oxygen glass
Glass spinner flowmeter 14, nitrogen glass rotameter 13 are fixed on flowmeter support；Testing liquid, gas are contained in beaker 11
Body outlet disk 10 is placed in the bottom of beaker 11, and beaker mouthful is sealed by beaker cover 12；Electrochemical workstation 1 passes through working electrode respectively
Interface 3, reference electrode interface 4, auxiliary electrode interface 2 are connected with working electrode 9, reference electrode 8 and platinized platinum auxiliary electrode 7,
Working electrode, reference electrode and auxiliary electrode are stretched into beaker in testing liquid；One end connection probe 6 of dissolved oxygen sensing instrument 5,
Probe 6 is extend into inside testing liquid, the other end connection digital signal controller 22 of dissolved oxygen sensing instrument 5, data signal control
Device processed 22 is connected with valve positioner 23, valve positioner control oxygen glass rotameter and nitrogen glass rotameter
Flow.
Wherein electrochemical workstation 1 is connected with working electrode 9, reference electrode 8 and platinized platinum auxiliary electrode 7, for measuring
Under given voltage or current signal, the electrochemical response parameter of working electrode, so as to judge the corrosion behavior rule of sample.Nitrogen
Gas cylinder 20 and oxygen cylinder 21 provide the gas source of stabilization for testing liquid, by the Valve control gas supply pressure on gas cylinder
On a relatively small maintenance level.Oxygen glass rotameter 14, the one side of nitrogen glass rotameter 13 are used
To measure oxygen and nitrogen flow, control, real-time regulation gas are on the other hand driven by valve positioner by regulating valve thereon
Body flow.Extend into probe inside testing liquid by dissolved oxygen sensing instrument 5, and dissolved oxygen is measured in real time by the sensor on probe
Content.Dissolved oxygen sensing instrument will include on panel dissolved oxygen content after measurement signal analysis, conversion, while by result of calculation
Digital signal controller 22 is transferred in electrical signal form.Digital signal controller is the miniature calculating with programmable functions
Machine, it is allowed to which user pre-enters setting value, and by setting value and the incoming numeric ratio of dissolved oxygen controller compared with then to valve control
Device processed sends instruction, and control valve is opened and closed and aperture.For valve is frequently turned on and off in avoiding process of the test, believe in numeral
The safe level deviation of dissolved oxygen is also provided with number controller, is maintained with the dissolved oxygen content ensured in solution relatively steady
It is fixed numerically.Gas vent disk 11 is plastic products, and operation principle is as shown in Figure 3.Profile is discoid, and diameter is slightly less than burning
Cup internal diameter, is divided to two mutually isolated up and down sheaf spaces, and upper strata is connected with oxygen intake, and has the less outlet of multiple sizes；Under
Layer is connected with nitrogen inlet, and nitrogen is excluded in outlet disk upper surface by some tiny vertical tubes.During experiment, disk is by following
In beaker bottom, nitrogen or oxygen uniform and delicate ground accelerate gas in testing liquid to sucker suction from upper surface outflow
Course of dissolution.
Process of the test of the present utility model is as follows：
As shown in figure 1, being respectively communicated with oxygen cylinder 21 → oxygen, 14 → gas vent of glass rotameter disk 10 and nitrogen
Gas cylinder 20 → nitrogen, 13 → gas vent of glass rotameter, 10 two pipelines of disk, make nitrogen inlet tube in connection procedure
16th, oxygen inlet tube 17 checks that path is airtight by nitrogen inlet tube jack 29, the oxygen inlet tube jack 28 in beaker cover 12
Whether property is good.By electrochemical measurement working electrode 9, reference electrode 8 and platinized platinum auxiliary electrode 7 through working electrode on beaker cover
Jack 24, reference electrode reference electrode plug 26, auxiliary electrode jack 25, and adjust three electrode relative positions, then by dissolved oxygen sensing instrument
Probe 6 passes through the dissolved oxygen sensing instrument probe jack 27 of beaker cover 12, with the edge of silica gel sealing beaker cover hole.Fallen in beaker 11
Enter testing liquid, will be together put into solution through all parts of beaker cover 12, gas vent disk 10 is fallen in beaker bottom,
Dissolved oxygen sensing instrument probe 6, working electrode 9, reference electrode 8 and platinized platinum auxiliary electrode 7 cover beaker cover in the middle part of beaker.
Dissolved oxygen content numerical value needed for experiment is set in digital signal controller, the valve on oxygen cylinder and nitrogen cylinder is opened.Tested
Dissolved oxygen sensing instrument reads the dissolved oxygen content in current test solution in journey, and Digital Signals are transferred in electrical signal form
Device, if the dissolved oxygen content of measurement is less than preset value, by control valve controller increase glass rotameter
Oxygen flow, simultaneously close off nitrogen valve, dissolved oxygen in testing liquid is risen to concentration needed for experiment；If the dissolving of measurement
Oxygen content is higher than preset value, then increase the nitrogen flow in glass rotameter by control valve controller, while
Oxygen valve is closed, dissolved oxygen drops to concentration needed for experiment in making testing liquid.
The dissolved oxygen content that the utility model is entered in the pilot flow control solution of testing liquid by nitrogen with oxygen.
Can be required according to corrosion test, set dissolved oxygen content in digital signal controller in advance.By dissolved oxygen sensing instrument, numeral letter
Dissolved oxygen content is equal to and presets numerical value in number controller and valve positioner joint feedback control beaker.Gas vent disk energy
Nitrogen is enough set to be flowed out with oxygen uniform and delicate.
Above with respect to specific descriptions of the present utility model, it is merely to illustrate the utility model and is not limited to this practicality newly
Technical scheme described by type embodiment.It will be understood by those within the art that, still the utility model can be entered
Row modification or equivalent, to reach identical technique effect.As long as satisfaction uses needs, all in protection model of the present utility model
In enclosing.
Claims (5)
1. a kind of electrochemical corrosion test device that can be realized under the conditions of different dissolved oxygen content, it is characterised in that including electrochemistry
It is work station, beaker, nitrogen cylinder, oxygen cylinder, oxygen glass rotameter, nitrogen glass rotameter, gas vent disk, molten
Solution oxygen measuring device and digital signal controller, oxygen cylinder, oxygen glass rotameter, gas vent disk are sequentially communicated；Nitrogen
Bottle, nitrogen glass rotameter, gas vent disk are sequentially communicated；Testing liquid is contained in beaker, gas vent disk is placed in burning
Cup bottom, beaker mouthful is sealed by beaker cover；Electrochemical workstation is connected with working electrode, reference electrode and auxiliary electrode,
Working electrode, reference electrode and auxiliary electrode are stretched into beaker in testing liquid；One end connection probe of dissolved oxygen sensing instrument, visits
Head is extend into inside testing liquid, the other end of dissolved oxygen sensing instrument connection digital signal controller, digital signal controller with
Valve positioner is connected, the flow of valve positioner control oxygen glass rotameter and nitrogen glass rotameter.
2. a kind of electrochemical corrosion test device that can be realized under the conditions of different dissolved oxygen content according to claim 1,
It is characterized in that described gas vent disk profile is discoid, gas vent disk diameter is less than beaker internal diameter, gas vent disk
It is divided to two mutually isolated up and down sheaf spaces, upper strata is connected with oxygen intake, and there are multiple sizes less than the outlet of entrance；Lower floor with
Nitrogen inlet is connected, and nitrogen is excluded in outlet disk upper surface by some tiny vertical tubes.
3. a kind of electrochemical corrosion test device that can be realized under the conditions of different dissolved oxygen content according to claim 1,
It is characterized in that the described gas vent face of trying to get to the heart of a matter is provided with sucker, sucker suction is in beaker bottom.
4. a kind of electrochemical corrosion test device that can be realized under the conditions of different dissolved oxygen content according to claim 1,
It is characterized in that described beaker cover is drilled with multiple holes, beaker cover passes through silica gel sealing hole edge.
5. a kind of electrochemical corrosion test device that can be realized under the conditions of different dissolved oxygen content according to claim 1,
It is characterized in that described digital signal controller is the microcomputer with programmable functions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621133800.1U CN206192857U (en) | 2016-10-19 | 2016-10-19 | Can realize electrochemical corrosion testing arrangement under different dissolved oxygen content conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621133800.1U CN206192857U (en) | 2016-10-19 | 2016-10-19 | Can realize electrochemical corrosion testing arrangement under different dissolved oxygen content conditions |
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| Publication Number | Publication Date |
|---|---|
| CN206192857U true CN206192857U (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621133800.1U Expired - Fee Related CN206192857U (en) | 2016-10-19 | 2016-10-19 | Can realize electrochemical corrosion testing arrangement under different dissolved oxygen content conditions |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106442306A (en) * | 2016-10-19 | 2017-02-22 | 辽宁石油化工大学 | Device and method capable of realizing electrochemical corrosion test under different dissolved oxygen content conditions |
| CN109283123A (en) * | 2018-10-25 | 2019-01-29 | 国网江西省电力有限公司电力科学研究院 | Soil accelerated corrosion tests device and experimental method |
| CN109900628A (en) * | 2019-02-20 | 2019-06-18 | 河海大学 | A kind of experimental provision and corrosion evaluation method of simulating ocean environment corrosion |
-
2016
- 2016-10-19 CN CN201621133800.1U patent/CN206192857U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106442306A (en) * | 2016-10-19 | 2017-02-22 | 辽宁石油化工大学 | Device and method capable of realizing electrochemical corrosion test under different dissolved oxygen content conditions |
| CN106442306B (en) * | 2016-10-19 | 2023-09-01 | 辽宁石油化工大学 | Electrochemical corrosion testing device and method capable of realizing different dissolved oxygen content conditions |
| CN109283123A (en) * | 2018-10-25 | 2019-01-29 | 国网江西省电力有限公司电力科学研究院 | Soil accelerated corrosion tests device and experimental method |
| CN109900628A (en) * | 2019-02-20 | 2019-06-18 | 河海大学 | A kind of experimental provision and corrosion evaluation method of simulating ocean environment corrosion |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170524 Termination date: 20171019 |