CN206772789U - A kind of indoor acceleration test apparatus for simulating soil correction test - Google Patents
A kind of indoor acceleration test apparatus for simulating soil correction test Download PDFInfo
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- CN206772789U CN206772789U CN201720521000.5U CN201720521000U CN206772789U CN 206772789 U CN206772789 U CN 206772789U CN 201720521000 U CN201720521000 U CN 201720521000U CN 206772789 U CN206772789 U CN 206772789U
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Abstract
A kind of indoor acceleration test apparatus for simulating soil correction test, belong to technical field of measurement and test, for determining the corrosion rate of material and coating under different soils environment, its technical scheme is, the experimental rig forms the physicochemical property regulating system for including chamber, soil and soil,, it is necessary to which the sample for doing corrosion resistance test is embedded in the soil in chamber in chamber, the executing agency of the physicochemical property regulating system is connected the soil with chamber.The factor that physicochemical property regulating system of the present utility model can influence piping material and coating corrosion speed according to test requirements document on the temperature of selected soil, humidity, oxygen content, pH value, stray electrical current etc. carries out closed-loop control, realize the accurate simulation of the buried environment of pipeline, the reliability of testing efficiency and test result is substantially increased, the accurate evaluation for sample decay resistance provides advantage.
Description
Technical field
It the utility model is related to one kind and can quickly determine transportation pipe and its coating and corrode under different soils environment
The experimental rig of speed, belongs to technical field of measurement and test.
Background technology
With the increase of country's conveying oil-gas pipeline length, buried environment becomes increasingly complex, and there is an urgent need to a kind of quick survey
Determine the experimental rig of material and the coating corrosion rate under different soils environment, to determine the design thickness of material, application scheme,
And various coatings are evaluated.Soil is the mixed system that gas, liquid, solid three-phase material is formed, each in soil to being embedded in
The corrosion of class material is sufficiently complex, and different soil has different physicochemical characteristics, includes the resistivity of soil, aqueous
Amount, gas permeability, acid-base value, the content of organic matter, pipe to soil potential etc., these chemical factors all directly or indirectly affect corrosion speed
Rate.
The resistance to soil corrosion evaluation method used at present has following several：
1）Comprehensive evaluation：First the relevant factor subitem of soil is made an appraisal, and provides evaluation number, each index is added up
Get up, the corrosivity of soil is evaluated according to evaluation number sum, and then evaluation is to the corrosivity of material, its major defect,
Evaluation index is indirect indexes, and directly the corrosion resistance of material can not be evaluated.In addition, this method is to different soils physics and chemistry
The standard of property marking crosses idealization, has significant limitation.
2）Method of polarization curve：Polarization curve may determine that the characteristic and rate-determining steps of electrode reaction, and its major defect has：Soil
Electrochemical reaction in earth may be more than a pair, sometimes the Tafel areas of polarization curve and unobvious, and extrapolation can cause larger
Error；Material can only be measured in itself, it is impossible to measure corrosion phenomenon of the material under different soils environment, there is limitation
Property.
3）Linear resistance technology：Frequently with polarization resistance Rp technologies in soil corrosion research, it is certainly rotten in polarization curve
Obtained from erosion current potential nearby makees linear approximation, its major defect has：Carry out that during linear approximation certain theoretical error can be brought；
Consideration is limited, it is impossible to simulates the corrosion to material under different soil, has limitation.
In summary, existing corrosion-resistant evaluation method has some limitations, and how quickly and accurately to determine pipe
The corrosion rate of wire material and coating under different soils environment, and then the decay resistance of material and coating is made and accurately commented
Valency, it has also become problem urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is the drawback for prior art, there is provided a kind of interior for simulating soil correction test
Acceleration test apparatus, quickly to determine the corrosion rate of material and coating under different soils environment.
Problem described in the utility model is realized with following technical proposals：
A kind of indoor acceleration test apparatus for simulating soil correction test, composition include chamber, soil and soil
Physicochemical property regulating system, the soil is in chamber, it is necessary to which the sample for doing corrosion resistance test is embedded in chamber
In soil, the executing agency of the physicochemical property regulating system is connected with chamber.
The indoor acceleration test apparatus of above-mentioned simulation soil correction test, the physicochemical property regulating system include oxygen content
With humidity control apparatus, the oxygen content includes measurement of oxygen content probe, humidity-measuring probe, oxygen content with humidity control apparatus
It is equal with humidity integrated controller, air compressor machine, liquid case, centrifugal pump and shower nozzle, the measurement of oxygen content probe and humidity-measuring probe
It is inserted in the soil in chamber, their signal output termination oxygen content input different from humidity integrated controller, institute
State the exhaust duct of air compressor machine to be connected with the through hole for inlaying air brick of chamber bottom, the shower nozzle is arranged on inside chamber
Top, the feed tube of the centrifugal pump connect liquid case, and discharging tube connects shower nozzle, the control termination oxygen content of air compressor machine and centrifugal pump with it is wet
Spend the different output ends of integrated controller.
The indoor acceleration test apparatus of above-mentioned simulation soil correction test, the physicochemical property regulating system are closed including temperature
Ring control device, the temperature closed-loop control device includes temperature scaling factor device, temperature probe and resistance type heater, described
Temperature probe is inserted in soil, the input of its temperature signal output end jointing temp closed loop controller；The resistance type heater
It is connected in the side wall of chamber and by cable with the output end of temperature scaling factor device.
The indoor acceleration test apparatus of above-mentioned simulation soil correction test, the physicochemical property regulating system include alternating current
Pressure control device, the ac voltage control device include alternating current voltage controller and two electrodes, and two electrodes are embedded in examination
It is located at the both sides of sample in soil in tryoff and respectively, each electrode is defeated by one of wire and alternating current voltage controller
Go out pole connection.
The indoor acceleration test apparatus of above-mentioned simulation soil correction test, the temperature probe, measurement of oxygen content are popped one's head in, are wet
The depth for spending measuring probe insertion soil is identical with sample length of embedment.
The indoor acceleration test apparatus of above-mentioned simulation soil correction test, the shower nozzle set multiple, and they are along soil
Surface is uniformly distributed.
Physicochemical property regulating system of the present utility model can contain according to test requirements document to the temperature, humidity, oxygen of selecting soil
Amount, pH value, stray electrical current etc. can influence piping material and the factor of coating corrosion speed carries out closed-loop control, realize that pipeline buries
The accurate simulation of ground environment, the reliability of testing efficiency and test result is substantially increased, be the accurate of sample decay resistance
Evaluation provides advantage.
Brief description of the drawings
The utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is structural representation of the present utility model.
Marked in figure as follows：1st, temperature scaling factor device, 2, alternating current voltage controller, 3, air compressor machine, 4, air brick, 5,
Oxygen content and humidity integrated controller, 6, liquid case, 7, centrifugal pump, 8, measurement of oxygen content probe, 9, humidity-measuring probe, 10, survey
Temperature probe, 11, electrode, 12, resistance type heater, 13, shower nozzle, 14, chamber, 15, soil.
Embodiment
Referring to Fig. 1, the utility model mainly includes chamber 14, soil 15 and physicochemical property regulating system, wherein, physics and chemistry
Characteristic regulating system includes the temperature closed loop control being made up of temperature scaling factor device 1, temperature probe 10 and resistance type heater 12
Device processed, the ac voltage control device being made up of alternating current voltage controller 2 and two electrodes 11, and by air compressor machine 3, thoroughly
Gas brick 4, oxygen content and humidity integrated controller 5, liquid case 6, centrifugal pump 7, measurement of oxygen content probe 8, humidity-measuring probe 9 and spray
First 13 oxygen contents formed and humidity control apparatus.
Temperature probe 10 is inserted in soil, measures the temperature of soil, and temperature signal is passed into temperature by wire and closed
Ring controller 1, temperature scaling factor device 1 compare temperature signal with preset value, and control resistance type heater 12 to soil
Heated, realize the closed-loop control to temperature.
Electrode 11 is embedded in soil, is connected by wire with alternating current voltage controller 2, and alternating current voltage controller 2 will
Default voltage output realizes the control to voltage on two electrodes 11.
Measurement of oxygen content probe 8 is inserted in soil, and signal is passed into oxygen content and humidity integrated controller by wire
5, oxygen content, by the comparison with preset value, controls the operation of air compressor machine 3, air compressor machine 3 passes through pipe fitting with humidity integrated controller 5
Air is input in the soil in chamber 14 with air brick 4, realizes the closed-loop control to oxygen content.Humidity-measuring probe 9
It is inserted in soil, measures the humidity in soil, signal is passed to by oxygen content and humidity integrated controller 5 by wire, oxygen contains
Amount by the comparison with preset value, controls the operation of centrifugal pump 7 with humidity integrated controller 5, and centrifugal pump 7 is by liquid from liquid case 6
Middle extraction, then be sprayed onto by shower nozzle 13 on soil, realize the closed-loop control to humidity.
Liquid in liquid case 6 can adjust pH value and ion concentration by addition acid, alkali, salt, realize the control to solution
System.
The course of work of the present utility model is as follows：
Soil is selected according to experiment purpose first, soil is placed in chamber, it is determined that the pH value of experiment, will be deployed
Liquid pour into liquid case；Experimental temperature is determined, temperature is set in temperature scaling factor device 1；It is determined that the exchange that experiment is estimated
Piezoelectric voltage, it is input to alternating current voltage controller 2；Oxygen content and humidity are determined, is input in oxygen content and humidity controller 5,
After whole installation, sample is placed in soil, temperature probe 10, measurement of oxygen content probe 8, humidity-measuring probe 9 are inserted
It is identical with sample length of embedment to enter the depth of soil, is then tested.
Embodiment of the present utility model is as follows：
Embodiment 1
Laterite soil is chosen, is placed in chamber, it is determined that the pH value of experiment is 8, liquid is modulated to plan using NaOH
Basicity, liquid is poured into liquid case 6, reacted for Acceleration study, it is 40 DEG C to determine experimental temperature, and temperature is set in into temperature and closed
In ring controller 1, it is determined that the alternating current voltage that experiment is expected is 150V, numerical value is input in alternating current voltage controller 2, really
Determine oxygen content be 15%, humidity 20%RH, be input in oxygen content and humidity controller 5, after whole installation, sample put
Put in soil, temperature probe 10, measurement of oxygen content probe 8, humidity-measuring probe 9 insert the depth of soil and sample is embedded to deeply
Spend identical, then tested.Temperature probe 10 measures the temperature of soil, and signal is passed into temperature scaling factor by wire
Device 1, temperature scaling factor device 1 compare signal with preset value, and control resistance type heater 12 to be heated, and realize to temperature
The closed-loop control of degree.Electrode 11 is embedded in soil, is connected by wire with alternating current voltage controller 2, alternating current voltage control
Device 2 realizes the control to voltage by default voltage output to electrode 11.Wherein measurement of oxygen content probe 8 will by wire
Signal passes to oxygen content and humidity integrated controller 5, oxygen content and humidity integrated controller 5 by the comparison with preset value,
The operation of air compressor machine 3 is controlled, air is connected by air compressor machine 3 by pipe fitting with air brick 4 is input to air in the soil of chamber 14
In earth, reach the closed-loop control to oxygen content.Humidity-measuring probe 9 is inserted in soil, is measured the humidity in soil, is passed through wire
Signal is passed into oxygen content and humidity integrated controller 5, oxygen content and humidity integrated controller 5 pass through the ratio with preset value
Compared with the operation of control centrifugal pump 7, centrifugal pump 7 extracts liquid out out of liquid case 6, enters shower nozzle 13 by pipe fitting, reaches to humidity
Closed-loop control.
Embodiment 2
Brown soil is chosen, is placed in chamber, it is determined that the pH value of experiment is 6, liquid is modulated into plan using HCl uses
Acidity, liquid is poured into liquid case 6, for Acceleration study react, determine experimental temperature be 50 DEG C, temperature is set in temperature closed loop
In controller 1, it is determined that the alternating current voltage that experiment is expected is 200V, numerical value is input in alternating current voltage controller 2, it is determined that
Oxygen content is 20%, humidity 30%RH, is input to oxygen content with humidity controller 5, after whole installation, sample is placed
In soil, temperature probe 10, measurement of oxygen content probe 8, humidity-measuring probe 9 insert the depth and sample length of embedment of soil
It is identical, then tested.Temperature probe 10 measures the temperature of soil, and signal is passed into temperature scaling factor device by wire
1, temperature scaling factor device 1 compares signal with preset value, and controls resistance type heater 12 to be heated, and realizes to temperature
Closed-loop control.Electrode 11 is embedded in soil, is connected by wire with alternating current voltage controller 2, alternating current voltage controller 2
By in default voltage output to electrode 11, the control to voltage is realized.Wherein measurement of oxygen content probe 8 by wire by signal
Oxygen content and humidity integrated controller 5 are passed to, oxygen content passes through the comparison with preset value, control with humidity integrated controller 5
The operation of air compressor machine 3, air is connected by air compressor machine 3 by pipe fitting with air brick 4 is input to air in the soil of chamber 14,
Reach the closed-loop control to oxygen content.Humidity-measuring probe 9 is inserted in soil, measures the humidity in soil, will be believed by wire
Oxygen content and humidity integrated controller 5 number are passed to, oxygen content passes through the comparison with preset value, control with humidity integrated controller 5
Liquid is extracted out, enters shower nozzle 13 by pipe fitting, reach and humidity is closed by the operation of centrifugal pump 7 processed, centrifugal pump 7 out of liquid case 6
Ring controls.
Claims (5)
1. a kind of indoor acceleration test apparatus for simulating soil correction test, it is characterized in that, composition includes chamber（14）, soil
Earth（15）And soil（15）Physicochemical property regulating system, the soil（15）Mounted in chamber（14）It is interior, it is necessary to do corrosion-resistant
Property test sample be embedded in chamber（14）In soil（15）In, the executing agency of the physicochemical property regulating system and experiment
Case（14）Connection；
The physicochemical property regulating system includes oxygen content and humidity control apparatus, and the oxygen content includes with humidity control apparatus
Measurement of oxygen content is popped one's head in（8）, humidity-measuring probe（9）, oxygen content and humidity integrated controller（5）, air compressor machine（3）, liquid case
（6）, centrifugal pump（7）And shower nozzle（13）, the measurement of oxygen content probe（8）And humidity-measuring probe（9）It is inserted in chamber
（14）In soil（15）In, their signal output termination oxygen content and humidity integrated controller（5）Different inputs, institute
State air compressor machine（3）Exhaust duct and chamber（14）Inlay air brick in bottom（4）Through hole connection, the shower nozzle（13）Peace
Mounted in chamber（14）Inner upper, the centrifugal pump（7）Feed tube connect liquid case（6）, discharging tube connects shower nozzle（13）, air compressor machine
（3）And centrifugal pump（7）Control termination oxygen content and humidity integrated controller（5）Different output ends.
2. a kind of indoor acceleration test apparatus for simulating soil correction test according to claim 1, it is characterized in that, it is described
Physicochemical property regulating system includes temperature closed-loop control device, and the temperature closed-loop control device includes temperature scaling factor device
（1）, temperature probe（10）And resistance type heater（12）, the temperature probe（10）It is inserted in soil（15）In, its temperature signal
Output end jointing temp closed loop controller（1）Input；The resistance type heater（12）Installed in chamber（14）Side wall
Go up and pass through cable and temperature scaling factor device（1）Output end connection.
3. a kind of indoor acceleration test apparatus for simulating soil correction test according to claim 2, it is characterized in that, it is described
Physicochemical property regulating system includes ac voltage control device, and the ac voltage control device includes alternating current voltage controller
（2）With two electrodes（11）, two electrodes（11）It is embedded in chamber（14）In soil（15）In and respectively be located at sample two
Side, each electrode（11）Pass through wire and alternating current voltage controller（2）An output stage connection.
4. a kind of indoor acceleration test apparatus for simulating soil correction test according to claim 3, it is characterized in that, it is described
Temperature probe（10）, measurement of oxygen content probe（8）, humidity-measuring probe（9）Insert soil（15）The embedment of depth and sample it is deep
Spend identical.
5. a kind of indoor acceleration test apparatus for simulating soil correction test according to claim 4, it is characterized in that, it is described
Shower nozzle（13）Set multiple, they are along soil（15）Surface be uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720521000.5U CN206772789U (en) | 2017-05-11 | 2017-05-11 | A kind of indoor acceleration test apparatus for simulating soil correction test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720521000.5U CN206772789U (en) | 2017-05-11 | 2017-05-11 | A kind of indoor acceleration test apparatus for simulating soil correction test |
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| Publication Number | Publication Date |
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| CN206772789U true CN206772789U (en) | 2017-12-19 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187324A (en) * | 2018-09-18 | 2019-01-11 | 广东电网有限责任公司 | Underground concrete structure steel corrodes Nondestructive method |
| 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 |
| CN109406376A (en) * | 2018-11-08 | 2019-03-01 | 国网浙江象山县供电有限公司 | The adaptive cable ageing test apparatus of temperature and humidity |
| CN109444032A (en) * | 2018-11-08 | 2019-03-08 | 国网浙江象山县供电有限公司 | Intelligent monitoring device for power cable corrosion monitoring |
| CN117554277A (en) * | 2024-01-11 | 2024-02-13 | 北京工业大学 | External corrosion acceleration test device considering internal pressure of buried water supply pipeline |
-
2017
- 2017-05-11 CN CN201720521000.5U patent/CN206772789U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187324A (en) * | 2018-09-18 | 2019-01-11 | 广东电网有限责任公司 | Underground concrete structure steel corrodes Nondestructive method |
| 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 |
| CN109406376A (en) * | 2018-11-08 | 2019-03-01 | 国网浙江象山县供电有限公司 | The adaptive cable ageing test apparatus of temperature and humidity |
| CN109444032A (en) * | 2018-11-08 | 2019-03-08 | 国网浙江象山县供电有限公司 | Intelligent monitoring device for power cable corrosion monitoring |
| CN109406376B (en) * | 2018-11-08 | 2023-12-12 | 国网浙江象山县供电有限公司 | Humiture self-adaptation cable ageing test device |
| CN109444032B (en) * | 2018-11-08 | 2023-12-26 | 国网浙江象山县供电有限公司 | Intelligent monitoring device for power cable corrosion monitoring |
| CN117554277A (en) * | 2024-01-11 | 2024-02-13 | 北京工业大学 | External corrosion acceleration test device considering internal pressure of buried water supply pipeline |
| CN117554277B (en) * | 2024-01-11 | 2024-03-29 | 北京工业大学 | External corrosion acceleration test device considering internal pressure of buried water supply pipeline |
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