CN102507428A - Condensed fluid corrosion simulation test device in automobile exhaust system - Google Patents
Condensed fluid corrosion simulation test device in automobile exhaust system Download PDFInfo
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Abstract
The invention discloses a condensed fluid corrosion simulation test device in an automobile exhaust system, belonging to the technical field of corrosion and protection. The device comprises a reaction atmosphere control executive system, a reaction system, a condensed fluid recovery system and a tail gas treatment system. The reaction atmosphere control executive system is connected with the reaction system through a connecting pipe, the reaction system mainly comprises an electric thermal furnace, a reaction chamber, a control rod and a sample stage, the reaction chamber is arranged in the electric thermal furnace, the control rod is inserted into the reaction chamber from the top part of the reaction chamber, the sample stage is connected with the lower part of the control rod, and a cooling water jacket is arranged at the outer side above the reaction chamber; the back side of the reaction system is sequentially connected with the condensed fluid recovery system and the tail gas treatment system through a connecting pipe. The condensed fluid corrosion simulation test device simulates the corrosion environment at the low temperature end of the automobile exhaust system, solves the integrated simulation problem of multi-factor circulating action in the environment of the automobile exhaust system and provides an in situ electrochemical test method of the condensed fluid corrosion during a circulation test.
Description
Technical field
The invention belongs to the corrosion and protection technical field, relate to the corrosion simulated of exhaust system, the corrosion simulated device of a kind of automobile exhaust system with material particularly is provided.
Background technology
In recent years, Domestic Automotive Industry obtains fast development.According to Development Research Center of the State Council's prediction, to the year two thousand twenty Chinese car market demand year increasing by 12.2 %, aggregate demand will reach 2,043 ten thousand.And each vehicle exhaust system is with the about 24kg of import stainless steel; Account for the automobile stainless steel and used the over half of total amount; By 5,000,000 sales volumes in 2004, about 120,000 tons of exhaust system with the stainless steel annual requirement, stainless steel is very tempting in the application prospect of Domestic Automotive Industry.
By with engine distance by near to order far away, the component parts of automobile exhaust system is followed successively by exhaust manifold, dummy pipe, flexible tubing, catalyst changer, centre pipe, main exhaust box and tip catheter.According to the difference of car type, what have also is provided with catalyst changer and secondary exhaust box in system.Current, answer lightweight, harsh requirement anti-corrosion and attractive in appearance, automobile exhaust system has been realized stainless steel basically with material.
Contain corrosive gass such as carbon monoxide, carbon dioxide, hydrocarbon, oxynitrides, oxygen sulfur compound in the waste gas that motor car engine is discharged.When vehicle telematic went, its maximum temperature can reach 900 ℃, even the temperature in jet pipe exit also between 100 ~ 300 ℃, this temperature environment has the high-temperature oxydation effect to exhaust system component; Closely go, especially the automobile start-stop stopping time, exhaust system temperature is lower, and particularly in the sound suppressor, condensation can take place steam-laden high-temp waste gas, condenses to form to contain NH
4 +, CO
3 2-, SO
4 2-, Cl
-With the organic acid corrosive liquids, exhaust system is produced the condensed fluid corrosive attack.Therefore, the condensed fluid corrosion failure under the off-gas oxidizing ringing and to fester be the principal mode of low-temperature end component failures such as exhaust system muffler.
Obviously, answer the demand for development of Hyundai Motor, the ability that exhaust system not only will possess resistance to high temperature oxidation with stainless steel also will have the performance of cold-resistant lime set corrosion.In order to be familiar with and to estimate the military service performance of exhaust system low-temperature end material therefor, must set up the test unit or the research method of suitable simulated exhaust system corrosion environment.Existing document has carried out the correlative study report according to exhaust system low-temperature end characteristics, for example: half infusion test method(s) of muffle furnace heat tracing, half immersion and heated oxide cyclic test method (NSC) etc.Though existing these methods can be reproduced the oxidation of exhaust system low-temperature end (like sound suppressor) inner cryogenic; Steam aggegation, state such as moistening; But only considered the thermal oxidation of waste gas; And do not introduce the effect of waste gas sent off from automobiles, the simultaneous oxidation test separates with the condensed fluid corrosion test to be carried out, inconvenient operation.In addition, existing method all still is unrealized the electrochemical in-situ monitoring of condensed fluid corrosion in the cyclic test process with understanding corrosion mechanism.
Summary of the invention
The simulation test device that the purpose of this invention is to provide a kind of automobile exhaust system condensed fluid corrosion; Solved the integrated problem of modelling of multifactor ringing in the automobile exhaust system environment, and the electrochemical in-situ method of testing of condensed fluid corrosion in the cyclic test process is provided.
The present invention is used for the corrosion simulated test unit of condensed fluid of automobile exhaust system, comprising: reaction atmosphere control executive system, reactive system, condensed fluid recovery system, exhaust treatment system.These systems link to each other through connecting pipe is airtight successively.
Above-mentioned reaction atmosphere control actuating unit comprises gas generating unit, preheating device, fluid drips feeder apparatus, liquid flowmeter, gas meter; The gas outlet on gas generating unit top is connected with gas meter through connecting pipe; Gas meter links to each other with porous flask side mouth through connecting pipe; The porous flask places electric jacket; The fluid drips feeder apparatus links to each other with liquid flowmeter through connecting pipe, is linked into jointly in the draft tube of reactive system then with after connecting pipe that another side openings of porous flask picks out is connected.Gas generating unit can be a gas generator or a plurality of gas generator, and the mixed gas of a kind of or its arbitrary proportion in the gases such as air, oxygen, sulphuric dioxide, carbon dioxide, nitrogen monoxide, chlorine, water vapor can be provided.Preheating device is made up of electric jacket and porous flask, for reacting gas shifts to an earlier date preheating, to guarantee to react the stable of internal ambience.Porous flask top links to each other with porous flask charging hopper; Yi Rong, the volatile pressed powder of heating can be dissolved in earlier in the liquid; Add in the porous flask of preheating through porous flask charging hopper then, liquid moment volatilization in the porous flask is discharged after importing gas mixings preheating, if additive and be not easy to volatilize; Perhaps low temperature volatilization effect is bad, then need cooperate the liquid Dropping feeder to experimentize.
Above-mentioned reactive system comprises electrothermal furnace, reaction chamber, sample bench, control lever, temperature sensor, draft tube and gas outlet, and reaction chamber places electrothermal furnace, and lid is arranged at reaction chamber top; Draft tube and the opening that provides temperature sensor and control lever to insert are arranged on the lid, and temperature sensor and control lever are linked in the reaction chamber through these openings, and the control lever bottom connects sample bench; The opening part of draft tube in reaction chamber connects the osculum nozzle; Reaction chamber top one side has gas outlet, so that gas is derived reaction chamber, the reaction chamber upper outer also has cooling jacket; Prevent that upper temp is too high, experiment is had a negative impact.Electrothermal furnace can be crucible furnace, tubular furnace or shaft furnace.Reaction chamber can be quartzy material, guarantees carrying out smoothly of suddenly cold and hot experiment, and the space of reaction chamber is bigger, and atmosphere is stable when guaranteeing experiment.Sample bench can be made by the corrosion-and high-temp-resistant material, like pottery, quartz material, can be ring-type, groove-like, sheet etc., and concrete shape is confirmed according to specimen shape, size and requirement of experiment.Sample bench generally can hang or carry a plurality of samples.The function of control lever is auxiliary installation sample, and can regulate the high and low position of sample through control lever, to reach some requirement of experiment.The function of temperature sensor is the temperature of check and correction reaction chamber, to guarantee accurate temperature controlling.The adding of osculum nozzle can make the fluid drips added-time be spray form together in company with gas and get into reaction chamber, and then in vaporization rapidly in reaction chamber, forms stable reaction atmosphere.The inlet of draft tube outlet and gas outlet places the top and the bottom of reaction chamber respectively in the reaction chamber; Can guarantee to discharge from gas outlet after reaction atmosphere can be full of the entire reaction chamber; Having avoided reacting gas not contact sample just overflows from gas outlet; The function of draft tube and gas outlet can be exchanged, and specifically confirms according to experiment condition.
Above-mentioned condensed fluid recovery system comprises reservoir, air intake opening, condensing reflux pipe, gas outlet; Air intake opening is communicated with the reaction chamber gas outlet is airtight through connecting pipe; The condensing reflux pipe is connected reservoir top, and the gas derivation after the gas outlet cooling coagulates reflow treatment is arranged at condensing reflux pipe top.The high-temperature gas of reaction chamber is discharged the back through connecting pipe and is got into the condensed fluid recovery system, and the steam when in connecting pipe, flowing in the high-temperature gas is partial condensation, flows into reservoir along pipeline, and uncondensed vapor is through the further cooling for reflux of condensing reflux pipe.The condensed fluid that reclaims can be done experimental analysis, perhaps does related experiment such as condensed fluid immersion.
Above-mentioned exhaust treatment system form differs, and generally is the device that can absorb harm gas solution in the tail gas is housed, and comprising: anti-suck device, draft tube, absorption bottle, back-off funnel, absorption liquid.Absorption liquid is housed in the absorption bottle, and back-off funnel top is connected on the draft tube, and the bottom is immersed and absorbed under the liquid level, depth-adjustment, and the anti-suck device is connected between condensed fluid recovery system gas outlet and the draft tube through connecting pipe.The waste gas of from the condensed fluid recovery system, discharging imports in the absorbent solution through connecting pipe, and the function of back-off infundibulate device is to increase the gas-liquid contact area, and the anti-suck device mainly is to prevent that the liquid suck-back from going in the condensed fluid, pollutes.Exhaust treatment system also can be that fuming cupboard or air bag are collected waste gas or other modes, no matter be which kind of form, pressure all can not be excessive, to guarantee the unimpeded and experiment safety of gas.
As improvement of the present invention, repack reactive system into reaction and electro-chemical test system.It mainly partly is made up of electric jacket and electrolytic cell.Electrolytic cell places electric jacket, and to provide experiment temperature required, the electrolytic cell lid is arranged at the electrolytic cell top; There is air intake opening in the electrolytic cell portion of covering, and draft tube is connected in the electrolytic cell through air intake opening, and sample and auxiliary electrode cover other opening through electrolytic cell and connect in the electrolytic cell; There is opening the electrolytic cell both sides; One side is an exhausr port, and exhausr port links to each other with the condensed fluid recovery system through connecting pipe, and temperature sensor and contrast electrode are contained in electrolytic cell opposite side opening part.Electrolytic cell can be quartzy material; Or by other high temperature resistant, anti-suddenly cold and hot material; The electrolytic cell part mainly is made up of the three-electrode electro Chemical test macro; Sample is a working electrode, and auxiliary electrode and contrast electrode are Pt, and three electrodes are connected to the outer electrochemical workstation of electrolytic cell through high temperature resistant material lead.Sample to be tested is with high temperature resistant silicon ketone material approved sample, and reacting gas is imported in the electrolytic cell by electrolytic cell top draft tube, and reacting gas and sample fully react the back derives from exhausr port.Experimental temperature is controlled by temperature sensor, lowers the temperature rapidly for making electrolytic cell, can after pyroprocessing, electrolytic cell be transferred in the water bath with thermostatic control, and is temperature required so that electro-chemical test to be provided.The required electrolytic solution of electro-chemical test is added by the electrolytic cell exhausr port, and is pourable during EOT.At exhausr port the condensing reflux pipe is installed during electro-chemical test, to reduce the influence of electrolytic solution evaporation to experiment.
So just realized the electrochemical in-situ test of reaction sample; Solve sample and will take out numerous and diverse operation of test repeatedly; Shortened experimental period; Prevented pollution and the scuffing of sample in operating process, the condensed fluid that electrolytic solution is collected by reaction provides, and has reproduced the corrosion environment of true exhaust system.
In sum, the present invention has following advantage:
1, the thermal oxidation and the condensed fluid corrosion experiment that integrate waste gas have solved the integrated problem of modelling of multifactor ringing in the automobile exhaust system environment, the corrosion environment that the adjusting through temperature can real simulation exhaust system low-temperature end.
2, introduce corrosion potential that the electro-chemical test system can in-situ test corrosion sample, impedance spectrum etc.; Shortened experimental period; Can realize the at-once monitor to the corrosion sample, the condensed fluid that use for electrochemical tests electrolytic solution is collected by reaction provides, and guarantees to reproduce the real corrosion environment of exhaust system.
3, realized feeding the corrosion environment of mixed gas simulated automotive tail gas, the global design of system has guaranteed the stable and accuracy control over temperature of atmosphere in the entire reaction course.
4, this simulation test device is simple to operate, can realize the analysis of experiments from single factor to multifactor impact.
Description of drawings
Fig. 1 is the system construction drawing of first embodiment of the simulation test device of automobile exhaust system condensed fluid of the present invention corrosion.Wherein, Reaction atmosphere control executive system comprises: gas generating unit 1, connecting pipe 2, gas meter 3, electric jacket 4, porous flask 5, porous flask charging hopper 6, fluid drips feeder apparatus 7, liquid flowmeter 8; Reactive system comprises: electrothermal furnace 9, reaction chamber 10, draft tube 11, osculum nozzle 12, gas outlet 13, sample bench 14, sample 15, control lever 16, temperature sensor 17, cooling jacket 18, reaction chamber lid 39; The condensed fluid recovery system comprises: reservoir 19, air intake opening 20, condensing reflux pipe 21, gas outlet 22, exhaust treatment system comprises: anti-suck device 23, absorption bottle 24, draft tube 25, back-off funnel 26, absorption liquid 27.
Fig. 2 is the system construction drawing of second embodiment of the simulation test device of automobile exhaust system condensed fluid of the present invention corrosion, and Fig. 3 is independent reaction and electro-chemical test system.Wherein, electrolytic cell partly comprises: air intake opening 29, electrolytic cell lid 30, contrast electrode 31, temperature sensor 32, electrolytic cell 33, sample 34, auxiliary electrode 36, exhausr port 37, condensing reflux pipe 38 also have CS 28, electric jacket 35 in addition.
Embodiment
Through embodiment the present invention is elaborated below.
Embodiment one
Referring to Fig. 1; The invention provides a kind of corrosion simulated device of condensed fluid of automobile exhaust system; Solved the integrated problem of modelling of multifactor ringing in the automobile exhaust system environment, and the electrochemical in-situ method of testing of condensed fluid corrosion in the cyclic test process is provided.Apparatus of the present invention mainly comprise: reaction atmosphere control executive system, reactive system, condensed fluid recovery system, exhaust treatment system.These systems are through the airtight successively connection of connecting pipe.
Above-mentioned reaction atmosphere control actuating unit comprises gas generating unit 1, preheating device, fluid drips feeder apparatus 7, liquid flowmeter 8, gas meter 3; The gas outlet on gas generating unit 1 top is connected with gas meter 3 through connecting pipe 2; Gas meter 3 links to each other with porous flask side mouth through connecting pipe; The porous flask places electric jacket 4; Fluid drips feeder apparatus 7 links to each other with liquid flowmeter 8 through connecting pipe, is linked into jointly in the draft tube 11 of reactive system then with after connecting pipe that porous flask 5 another side openings pick out is connected.Preheating device is made up of electric jacket 4 and porous flask 5, and porous flask 5 tops link to each other with porous flask charging hopper 6.Above-mentioned reactive system comprises electrothermal furnace 9, reaction chamber 10, sample bench 14, control lever 16, temperature sensor 17, draft tube 11 and gas outlet 13; Reaction chamber 10 places electrothermal furnace 9; Lid is arranged at reaction chamber 10 tops, and draft tube 11 and the opening that provides temperature sensor 17 and control lever 16 to insert are arranged on the lid, and temperature sensor 17 is linked in the reaction chamber 10 through these openings with control lever 16; Control lever 16 bottoms connect sample bench 14; The opening part of draft tube 11 in reaction chamber 10 connects osculum nozzle 12, and reaction chamber 10 tops one side has gas outlet 13, and reaction chamber 10 upper outer also have cooling jacket 18.Above-mentioned condensed fluid recovery system comprises reservoir 19, air intake opening 20, condensing reflux pipe 21, gas outlet 22; Air intake opening 20 is through connecting pipe and 13 airtight connections of reaction chamber gas outlet; Condensing reflux pipe 21 is connected reservoir 19 tops, and gas outlet 22 is arranged at condensing reflux pipe 21 tops.Above-mentioned exhaust treatment system comprises: anti-suck device 23, draft tube 25, absorption bottle 24, back-off funnel 26, absorption liquid 27.Absorption liquid 27 is housed in the absorption bottle 24, and back-off funnel 26 tops are connected on the draft tube 25, and the bottom is immersed and absorbed under the liquid level, depth-adjustment, and anti-suck device 23 is connected between condensed fluid recovery system gas outlet 22 and the draft tube 25 through connecting pipe.
In order to explore in the SCR system, because of the adding of urea to the stainless corrosion influence of motor vehicle exhaustion system, adopted apparatus of the present invention to make an experiment.Select for use existing heavy truck exhaust system to add urea system and use material 304 stainless steels to be experiment material, be provided with and add urea and do not add two groups of contrast experiments of urea.
Experiment is added the no urea dropping liquid of distilled water preparation, H in the control solution with ammonium sulfite and sulphurous acid
2O and SO
2The mole proportioning be certain value, and guarantee pH=3 ~ 5 through the condensed fluid of collecting behind the reaction chamber, come the corrosive environment of simulated exhaust system.On the basis of not adding the urea dropping liquid, add urea, making the solution content of urea is 1 ~ 3wt%, is to add urea dropping liquid composition.Condensed fluid adopts the preparation of AKsteel standard, regulates pH=3 ~ 5 with dilute sulfuric acid.
Experiment uses air as gas source; It is 30 ~ 120ml/min that adjustments of gas flowmeter 3 makes the flow velocity of gas, regulator solution flowmeter body 8, and the speed that control drips solution entering reaction chamber 10 is 5 ~ 15ml/h; Gas heats the back and mixes the back with dropping solution through osculum nozzle 12 entering reaction chambers 10 in 300 ℃ preheating device; The fine drop of ejection is vaporized rapidly under 400 ℃ high temperature action, forms the ambiance of the true gas outlet SCR of simulation system.
Sample is in 400 ℃ of reaction chambers 10 behind the oxidation 2h; Close gas and fluid supply, and open reaction chamber lid 39, take out sample 15 with control lever 16; Adopt the mode of partly soaking in the condensed fluid of preparation, to soak 30min (60 ~ 80 ℃ of waters bath with thermostatic control); So far be a circulation, during can carry out electro-chemical test, so circulation experiment is 50 times.
Embodiment two
Present embodiment and embodiment 1 are basic identical; Special feature is that reaction atmosphere is different and reactive system is repacked into the electrolytic cell is the reaction and the electro-chemical test system of main body; With the integrated problem of modelling of multifactor ringing in the realization automobile exhaust system environment, and the electrochemical in-situ method of testing that condensed fluid corrodes in the cyclic test process is provided.
Referring to Fig. 2, Fig. 3, gas generating unit 1 is made up of a plurality of gas generators, to realize single factor or multifactor gas effect simulation test.Reaction and electro-chemical test system mainly partly are made up of electric jacket 35 and electrolytic cell.Electrolytic cell 33 places electric jacket 35, and electrolytic cell lid 30 is arranged at electrolytic cell 33 tops, and electrolytic cell covers 30 tops has air intake opening 29; Draft tube 11 is connected in the electrolytic cell 33 through air intake opening 29; Sample 34 connects in the electrolytic cell 33 through other opening on the electrolytic cell lid 30 with auxiliary electrode 36, and there is opening electrolytic cell 33 both sides, and a side is an exhausr port 37; Exhausr port 37 links to each other with the condensed fluid recovery system through connecting pipe, and temperature sensor 32 is contained in electrolytic cell 33 opposite side opening parts with contrast electrode 31.Electrolytic cell 33 is made by quartzy material, and sample 34 is a working electrode in the formation of three-electrode electro Chemical test macro, and auxiliary electrode 36 is Pt with contrast electrode 31, and three electrodes are connected to the electrochemical workstation outside the electrolytic cell 33 through high temperature resistant material lead.
Vehicle exhaust is the mixed gas of carbon monoxide, carbon dioxide, hydrocarbon, oxynitrides, lead and oxygen sulfur compound etc.; Be the corrosion influence of one or more compositions in the research vehicle exhaust to the exhaust system material; As study the effect of sulphuric dioxide and carbon dioxide in the tail gas; Can control the flow of sulphuric dioxide and carbon dioxide through gas meter 3 respectively; Remaining gas is normally added, and water vapor can or directly drip distilled water through fluid drips feeder apparatus 7 through porous flask charging hopper 6 and realize, to form the reaction atmosphere of simulated automotive tail gas.
Sample to be tested with high temperature resistant silicon ketone material approved sample, is experimentized.Reacting gas is imported in the electrolytic cell 33 by electrolytic cell top draft tube 11, and reacting gas and sample 34 fully reaction back are derived from exhausr port 37.Sample to be tested 34 through 400 ℃ of high-temperature oxydation 2h after, closing control switch 28, and rapidly electrolytic cell 33 being shifted out from electric jacket 35, treat that temperature is reduced to room temperature after, electrolytic cell 33 is placed 60 ~ 80 ℃ of waters bath with thermostatic control.Exhausr port 37 place's connecting pipes are opened; The condensed fluid of getting a certain amount of collection adds the electrolytic cell 33 from exhausr port 37; Regulate three electrode positions, make it meet the electro-chemical test requirement, condensing reflux pipe 38 is installed at exhausr port 37; To reduce the influence of electrolytic solution evaporation, in the immersion test of 30min, sample is carried out the electrochemical in-situ test analysis then to experiment.Electro-chemical test is poured out condensed fluid after finishing from electrolytic cell 33, to guarantee carrying out smoothly of next circulation experiment.
Claims (4)
1. the analogue experiment installation of automobile exhaust system condensed fluid corrosion is characterized in that this device comprises: reaction atmosphere control executive system, and reactive system, the condensed fluid recovery system, exhaust treatment system, these systems link to each other through connecting pipe is airtight successively; Above-mentioned reaction atmosphere control executive system comprises gas generating unit (1), preheating device, fluid drips feeder apparatus (7), liquid flowmeter (8), gas meter (3); The gas outlet on gas generating unit (1) top is connected with gas meter (3) through connecting pipe (2); Gas meter (3) links to each other with porous flask (5) side mouth through connecting pipe; Porous flask (5) places electric jacket (4); Fluid drips feeder apparatus (7) links to each other with liquid flowmeter (8) through connecting pipe, is linked into jointly in the draft tube (11) of reactive system then with after connecting pipe that another side mouth of porous flask (5) picks out is connected; Preheating device is made up of electric jacket (4) and porous flask (5), and porous flask (5) top links to each other with porous flask charging hopper (6); Above-mentioned reactive system comprises electrothermal furnace (9), reaction chamber (10), sample bench (14), control lever (16), temperature sensor (17), draft tube (11) and gas outlet (13); Reaction chamber (10) places electrothermal furnace (9); Lid is arranged at reaction chamber (10) top; Draft tube (11) is arranged on the lid and temperature sensor (17) is provided and the opening of control lever (16) access; Temperature sensor (17) and control lever (16) are linked in the reaction chamber (10) through opening, and control lever (16) bottom connects sample bench (14), and the opening part of draft tube (11) in reaction chamber (10) connects osculum nozzle (12); Reaction chamber (10) top one side has gas outlet (13), and reaction chamber (10) upper outer also has cooling jacket (18); Above-mentioned condensed fluid recovery system comprises reservoir (19), air intake opening (20), condensing reflux pipe (21), gas outlet (22); Air intake opening (20) is through connecting pipe and airtight connection of reaction chamber gas outlet (13); Condensing reflux pipe (21) is connected reservoir (19) top, and gas outlet (22) is arranged at condensing reflux pipe (21) top; Above-mentioned exhaust treatment system comprises: anti-suck device (23), draft tube (25), absorption bottle (24), back-off funnel (26), absorption liquid (27); Absorption liquid (27) is housed in the absorption bottle (24); Back-off funnel (26) top is connected on the draft tube (25); The bottom is immersed and is absorbed under the liquid level, depth-adjustment, and anti-suck device (23) is connected between condensed fluid recovery system gas outlet (22) and the draft tube (25) through connecting pipe.
2. the analogue experiment installation that corrodes according to right 1 described automobile exhaust system condensed fluid; It is characterized in that; Gas generating unit (1) is made up of a plurality of gas generators, and reaction and electro-chemical test system mainly partly are made up of electric jacket (35) and electrolytic cell; Electrolytic cell (33) places electric jacket (35); Electrolytic cell lid (30) is arranged at electrolytic cell (33) top; Air intake opening (29) is arranged at electrolytic cell lid (30) top, and draft tube (11) is connected in the electrolytic cell (33) through air intake opening (29), and sample (34) and auxiliary electrode (36) are gone up other opening through electrolytic cell lid (30) and connected in the electrolytic cell (33); There is opening electrolytic cell (33) both sides; One side is exhausr port (37), and exhausr port (37) links to each other with the condensed fluid recovery system through connecting pipe, and temperature sensor (32) and contrast electrode (31) are contained in electrolytic cell (33) opposite side opening part; Electrolytic cell (33) is made by quartzy material; Sample in the formation of three-electrode electro Chemical test macro (34) is a working electrode; Auxiliary electrode (36) and contrast electrode (31) are Pt, and three electrodes are connected to the outer electrochemical workstation of electrolytic cell (33) through high temperature resistant material lead.
3. the analogue experiment installation of automobile exhaust system condensed fluid corrosion according to claim 1 and 2; It is characterized in that; Sample (34) is with high temperature resistant silicon ketone material approved sample; Reacting gas is imported in the electrolytic cell (33) by electrolytic cell top draft tube (11), and reacting gas and sample (34) are fully derived from exhausr port (37) the reaction back; Electrolytic cell (33) adopts the water bath with thermostatic control temperature control, at exhausr port (37) condensing reflux pipe (38) has been installed during electro-chemical test.
4. the analogue experiment installation of automobile exhaust system condensed fluid corrosion according to claim 1 and 2 is characterized in that porous flask (5) and reaction chamber (10) are quartzy material.
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