CN102507421B - Atmospheric-pressure closed multi-interface corrosion experimental device as well as manufacturing and using method thereof - Google Patents
Atmospheric-pressure closed multi-interface corrosion experimental device as well as manufacturing and using method thereof Download PDFInfo
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- CN102507421B CN102507421B CN2011103181626A CN201110318162A CN102507421B CN 102507421 B CN102507421 B CN 102507421B CN 2011103181626 A CN2011103181626 A CN 2011103181626A CN 201110318162 A CN201110318162 A CN 201110318162A CN 102507421 B CN102507421 B CN 102507421B
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Abstract
The invention relates to a device for testing the corrosion resistance of a material and a manufacturing method of the device and a using method of the device, and particularly relates to an atmospheric-pressure closed multi-interface corrosion experimental device and a manufacturing method of the experimental device and a using method of the experimental device. The device comprises an open glass reactor and an open glass reactor cover, and is characterized in that: the open glass reactor cover is a stainless steel plate or a polytetrafluoroethylene plate, the stainless steel plate or the polytetrafluoroethylene plate is provided with an opening according to the experiment requirements, the size and position of the opening can be designed according to the experiment requirement. The atmospheric-pressure closed multi-interface corrosion experimental device is good in gas tightness, is simple in manufacturing, is low in cost, is convenient in assembling and disassembling as well as use, and is suitable for the research of corrosion behavior, law and mechanism under an atmospheric-pressure air inflation condition such as the CO2 corrosion research and H2S corrosion research of an oil gas system device and is suitable for the corrosion inhibition performance evaluation of a corrosion inhibitor and the like; and moreover, the atmospheric-pressure closed multi-interface corrosion test device can perform simulation test for a long time, the working pressure is the atmospheric pressure, the using temperature can reach 80 DEG C.
Description
Technical field
The present invention relates to a kind of device and production and preparation method thereof of decay resistance of test material, especially a kind of atmospheric closed multi-interface corrosion test device and production and preparation method thereof.
Background technology
Corrosion failure form the most common in the oil and gas industry equipment course of work is CO
2Corrosion and H
2The S corrosion, carry out CO under normal pressure
2And H
2The corrosion simulated experiment of S is the important means of corrosion regularity, mechanism and the corrosion inhibiter performance evaluation of Knowing material.For fear of gas leakage, as airborne O
2The system of bleeding,, on the impact of experimental result, have impermeability good to experimental simulation device, loading and unloading and the requirement such as easy to use.This class experiment main employing weight-loss method and electrochemical process are united the method for use at present, and general weight-loss method adopts three samples; Electrochemical process adopts three-electrode system, adds the pH electrode interface, air intake opening, and gas outlet, the condenser pipe interface, thermometer boss etc., therefore, its experimental simulation device need to possess 7 or 8 interfaces, and the size of each interface needs to change with requirement of experiment.Being used at present this Quasi-experiment study device commonly used has two classes, and a class is 4 mouthfuls or the glass flask of 5 mouthfuls with working standard ground, there is no the place of other opening except 4 mouthfuls or 5 mouthfuls; Another kind of is 4 mouthfuls or the opening reactor of 5 mouthfuls with working standard ground, by the opening reactor cap with ground with the opening reactor of ground, forms, and the steel plate by strap clamp makes opening reactor and opening reactor cap fix and seal.The common ground of this two classes experimental provision is that interface is few, interface size and location comparison are fixed, be difficult to meet the experiment demand, and in order to reach experiment purpose, each interface need to be taken into account 1-2 kind function, when each interface is carried out the function switching, air easily enters experimental system, thereby affect experimental result, the final research conclusion of leading to errors property, and the use of this class device is extremely inconvenient.The shortcomings such as seen, also there is inconvenient operation in opening reactor commonly used at present, and sealing effectiveness is not good.Need a kind of impermeability good for this reason, make simple and cost low, atmospheric closed corrosion experimental device of loading and unloading and many interfaces easy to use and production and preparation method thereof, meet the needs of real work with this.
Summary of the invention
The object of the invention is to propose a kind of atmospheric closed multi-interface corrosion test device and production and preparation method thereof, its impermeability of this atmospheric closed multi-interface corrosion test device is good, manufacturing is simple and cost is low, loading and unloading and easy to use, be applicable to the corrosion behavior under the normal pressure venting condition, rule and mechanism research, as the CO of petroleum system equipment
2Corrosion research and H
2The S corrosion research, and the corrosion inhibition evaluation of corrosion inhibiter etc., in addition, atmospheric closed multi-interface corrosion test device of the present invention can carry out simulated experiment for a long time, and working pressure is normal pressure, and serviceability temperature can reach 80 ℃.
The technical solution adopted in the present invention is:
Atmospheric closed multi-interface corrosion test device, comprise opening glass reactor and opening glass reactor lid, it is characterized in that: opening glass reactor lid is corrosion resistant plate or polyfluortetraethylene plate, need to be in corrosion resistant plate or polyfluortetraethylene plate upper shed according to experiment, the size of opening and position need to be arranged according to experiment.The decay resistance of corrosion resistant plate or polyfluortetraethylene plate is better.
Described atmospheric closed multi-interface corrosion test device, the opening that the opening glass reactor covers be respectively as the contrast electrode interface, work sample and hang the shared interface of sample, the auxiliary electrode interface, the pH electrode interface, air intake opening, condenser pipe interface and thermometer boss; Work sample, contrast electrode and auxiliary electrode form galvanochemistry three electrode measurement systems, are connected with the respective electrode of outside electrochemical testing device respectively, and the corrosion behavior of work sample is measured; In order to reduce the impact of solution resistance on electrochemical measurement, contrast electrode is near the work sample.
Described atmospheric closed multi-interface corrosion test device, the opening glass reactor covers opening size and is complementary with the externally threaded size with the aligning uniaxial compression pipe fitting of built-in lasso, the size that the opening glass reactor covers each assembly is complementary with the hole internal diameter size of aligning uniaxial compression pipe fitting with built-in lasso, with the insertion that facilitates each assembly that the opening glass reactor covers with extract, and guarantee the impermeability of each interface to prevent that gas leakage or air from entering system; With the aligning uniaxial compression pipe fitting of built-in lasso by tapped hexagon cover, built-in lasso and be with externally threaded pipeline adapter to form, hexagon cover with the pipeline adapter in have measure-alike through hole, each assembly that the opening glass reactor is covered is inserted in the tapped hexagon lid of aligning uniaxial compression pipe fitting, be inserted in the built-in lasso of aligning uniaxial compression pipe fitting on each assembly, with each assembly Inserting Tube line adapter, screw the tapped hexagon lid of aligning uniaxial compression pipe fitting, make each assembly fix and seal; External thread place at the pipeline adapter of the uniaxial compression of the aligning with the built-in lasso pipe fitting of different size is wrapped with the polytetrafluoro band, with the sealing that guarantees that aligning uniaxial compression pipe fitting and opening glass reactor cover.
Described atmospheric closed multi-interface corrosion test device, opening glass reactor are the flat cylindrical structural of heavy wall, and thick and flat flange is arranged on its mouthful, along flange, semi-circular recesses are arranged, and place flexible silicon resin O shape circle in groove and seal; Opening glass reactor lid is stainless steel plectane or the teflon plectane that is complementary with the opening glass reactor.
Described atmospheric closed multi-interface corrosion test device, opening glass reactor and opening glass reactor lid are fixed by geometrical clamp, and geometrical clamp is comprised of two clips in up and down, and its size ratio open glass reactor external diameter is slightly large.
Described atmospheric closed multi-interface corrosion test device, on the circumference of two clips up and down of geometrical clamp, flange is arranged, on lower clip, screw rod and butterfly nut are arranged, be enclosed within opening glass reactor flange bottom, the C type breach of upper slice clip is placed on corrosion resistant plate or polyfluortetraethylene plate; Screw rod is movably riveted under geometrical clamp on the sheet clip, makes screw rod to move in the C of geometrical clamp upper slice clip type breach, facilitates the installation and removal of geometrical clamp upper slice clip.
Described atmospheric closed multi-interface corrosion test device, the screw rod under the flange on the clip circumference of two of up and down of the flange on opening glass reactor mouth and geometrical clamp, geometrical clamp on the sheet clip is all identical with quantity and the distribution situation of the C type breach on butterfly nut and geometrical clamp upper slice clip; The part of butterfly nut is placed in the opening glass reactor and covers, and butterfly nut is evenly exerted oneself, and tightens butterfly nut, the screw rod of two clips up and down by geometrical clamp and butterfly nut make the opening glass reactor and opening glass reactor lid fixing.
Described atmospheric closed multi-interface corrosion test device, opening glass reactor cover the diameter opening slightly larger than work sample; And fill in the first rubber stopper that size is mated on this opening, work sample and suspension sample are fixed, and opening glass reactor lid is sealed; The opening glass reactor adopts condenser pipe to carry out condensation to the test medium in it, to reduce the volatilization of medium; Beat the hole identical with the gas outlet tube diameter on the second rubber stopper with condenser pipe top dimension coupling, insert gas outlet tube, enter the alkali liquor absorption bottle from the gas of discharging in the opening glass reactor by condenser pipe inner tube and gas outlet tube, by after the alkali liquor absorption in the alkali liquor absorption bottle by the discharging of tail gas escape pipe.
Its manufacture method of described atmospheric closed multi-interface corrosion test device, is characterized in that comprising the steps:
The first step, opening glass reactor lid is cut out plate:, according to the shape and structure of opening glass reactor, determine the corrosion resistant plate or the polyfluortetraethylene plate that are complementary with it and cover as the opening glass reactor;
Second step, opening glass reactor cover gab: cover the be complementary uniaxial compression of the aligning with the built-in lasso pipe fitting of hole internal diameter size of the dimensional configurations that covers each assembly according to the opening glass reactor at the opening glass reactor, the externally threaded size that the opening glass reactor covers opening size and aligning uniaxial compression pipe fitting is complementary; Then, need to determine aperture position according to experiment, and cover the position that marks respectively opening at the opening glass reactor, then adopt the hole making drill opening; And the opening that the opening glass reactor covers is respectively as the contrast electrode interface, work sample and hang the shared interface of sample, auxiliary electrode interface, pH electrode interface, air intake opening, condenser pipe interface and thermometer boss; Wherein, work sample, contrast electrode and auxiliary electrode form galvanochemistry three electrode measurement systems, are connected with the respective electrode of outside electrochemical testing device respectively, and the corrosion behavior of work sample is measured; In addition, in order to reduce the impact of solution resistance on electrochemical measurement, contrast electrode is near the work sample; In addition, the diameter of the shared interface of work sample and suspension sample is slightly larger than the diameter of work sample, and with atresia first rubber stopper of size coupling, clogs;
The 3rd step, aligning uniaxial compression pipe fitting sealing: the external thread place at the pipeline adapter of the uniaxial compression of the aligning with the built-in lasso pipe fitting of different size is wrapped with the polytetrafluoro band, and be arranged on the opening glass reactor and cover, guarantee the sealing that aligning uniaxial compression pipe fitting and opening glass reactor cover.
Its using method of described atmospheric closed multi-interface corrosion test device, is characterized in that comprising the steps:
The first step, put into test medium and seal test device: test medium is put into the flat columniform opening glass reactor of heavy wall, lower clip of geometrical clamp is enclosed within the flange of the flat columniform opening glass reactor of heavy wall, puts into flexible silicon resin O shape circle in the groove of flange; Decontrol a mouthful glass reactor lid on the flat columniform opening glass reactor of heavy wall, the upper slice clip with C type breach is placed on the opening glass reactor covers; Mobile screw and butterfly nut, be stuck in the C type breach of a clip screw rod, and the part of butterfly nut is placed in the opening glass reactor and covers; Butterfly nut is evenly exerted oneself, tighten butterfly nut, screw rod and butterfly nut are fixed sheet clip, the flat columniform opening glass reactor of heavy wall, opening glass reactor lid and geometrical clamp upper slice clip under geometrical clamp, and flexible silicon resin O shape encloses the air seal effect;
Second step, install and each assembly that the sealed open glass reactor covers: each assembly that the opening glass reactor is covered is inserted in the tapped hexagon lid of aligning uniaxial compression pipe fitting, be inserted in the built-in lasso of aligning uniaxial compression pipe fitting on each assembly, with each assembly Inserting Tube line adapter, screw the tapped hexagon lid of aligning uniaxial compression pipe fitting, make each assembly fix and seal;
The 3rd step, experiment exhaust emissions: beat the hole identical with the gas outlet tube diameter on the second rubber stopper with condenser pipe top dimension coupling, insert gas outlet tube, the second rubber stopper is inserted the condenser pipe top, enter the alkali liquor absorption bottle from the gas of discharging in the opening glass reactor by condenser pipe and gas outlet tube, by after the alkali liquor absorption in the alkali liquor absorption bottle by the discharging of tail gas escape pipe;
In the 4th step, the experimental provision airtight test: open condensate water, when temperature that thermometer shows,, with after experimental temperature is identical, open the gas cylinder main valve of experimental gas, whether adjusting gas flow, have bubble to emerge in inspection alkali liquor absorption bottle; , if there is bubble to emerge, illustrate that the impermeability of whole experimental provision is fine; If do not have bubble to emerge, in the illustrative experiment device, partial portion gas leakage, need to investigate one by one to system unit, guarantees sealing;
The 5th step, experimental solutions pH value adjusting: the oxygen that dissolves in experimental solutions by emptying after, the pH value by pH electrode regulating experimental solutions reaches requirement of experiment;
The 6th step, work sample wire sealing: the first rubber stopper that takes off atresia, make a call to a diameter with card punch than the slightly little aperture of work sample diameter of wire on the first rubber stopper, make work sample wire pass aperture, the elasticity by the first rubber stopper seals work sample wire;
The 7th step, work sample and the sealing of suspension sample: put into the suspension sample after weighing, insert the first rubber stopper that is plugged with the work sample, by the elasticity of the first rubber stopper, the opening glass reactor is covered and seals;
In the 8th step, test: work sample, contrast electrode and auxiliary electrode form galvanochemistry three electrode measurement systems, be connected with the respective electrode of outside electrochemical testing device respectively, thereby the corrosion behavior of work sample is measured; In order to reduce the impact of solution resistance on electrochemical measurement, contrast electrode is near the work sample.
Like this in when work, atmospheric closed multi-interface corrosion test device of the present invention and production and preparation method thereof, its device impermeability is good, make simple and cost low, loading and unloading and easy to use; In addition, due to H
2S has toxicity, so using atmospheric closed multi-interface corrosion test device of the present invention to contain H
2During the corrosion experiment of S gas, in order to reduce contacting of experimenter and harmful gas, atmospheric closed multi-interface corrosion test device of the present utility model preferably is placed in fuming cupboard, the H in experimental gas
2S concentration also had better not surpass 100ppm.
The present invention compared with prior art has following advantage and good effect:
The object of the invention is to propose a kind of atmospheric closed multi-interface corrosion test device and production and preparation method thereof, its impermeability of this atmospheric closed multi-interface corrosion test device is good, manufacturing is simple and cost is low, loading and unloading and easy to use, be applicable to the corrosion behavior under the normal pressure venting condition, rule and mechanism research, as the CO of petroleum system equipment
2Corrosion research and H
2The S corrosion research, and the corrosion inhibition evaluation of corrosion inhibiter etc., in addition, atmospheric closed multi-interface corrosion test device of the present invention can carry out simulated experiment for a long time, and working pressure is normal pressure, and serviceability temperature can reach 80 ℃.
Description of drawings
Fig. 1 is atmospheric closed multi-interface corrosion test device structural representation of the present invention;
Fig. 2 is atmospheric closed multi-interface corrosion test device opening reactor cap vertical view of the present invention;
Fig. 3 is atmospheric closed multi-interface corrosion test device aligning uniaxial compression pipe fitting front elevation of the present invention.
wherein, 1 is the opening glass reactor, 2 is lower clip, 3 is upper slice clip, 4 are opening glass reactor lid, 5 is flexible silicon resin O type circle, 6 is butterfly nut, 7 is screw rod, 8 is aligning uniaxial compression pipe fitting, 9 is the pH electrode, 10 is air intake opening, 11 is the first rubber stopper, 12 are the work sample, 13 for hanging sample, 14 is condenser pipe, 15 is gas outlet tube, 16 is the alkali liquor absorption bottle, 17 is the tail gas escape pipe, 18 is thermometer, 19 is auxiliary electrode, 20 is contrast electrode, 21 are the hexagon lid, 22 is the pipeline adapter, 23 is the second rubber stopper, 24 are work sample wire.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail,
Embodiment 1
As shown in Figure 1 to Figure 3, a kind of atmospheric closed multi-interface corrosion test device, comprise opening glass reactor 1 and opening glass reactor lid 4, it is characterized in that: opening glass reactor lid 4 is corrosion resistant plate, need to be in the corrosion resistant plate upper shed according to experiment, the size of opening and position according to the experiment need to arrange, the decay resistance of corrosion resistant plate is better; Opening on opening glass reactor lid 4 is respectively as the interface of contrast electrode 20, work sample 12 and hang the shared interface of sample 13, the interface of auxiliary electrode 19, the interface of pH electrode 9, air intake opening 10, the interface of the interface of condenser pipe 14 and thermometer 18; Work sample 12, contrast electrode 20 and auxiliary electrode 19 form galvanochemistry three electrode measurement systems, are connected with the respective electrode of outside electrochemical testing device respectively, and the corrosion behavior of work sample 12 is measured; In order to reduce the impact of solution resistance on electrochemical measurement, contrast electrode 20 is near work sample 12; Opening glass reactor lid 4 upper shed sizes are complementary with the external thread size of aligning uniaxial compression pipe fitting 8 with built-in lasso, on opening glass reactor lid 4, the size of each assembly is complementary with the hole internal diameter size of aligning uniaxial compression pipe fitting 8 with built-in lasso, to facilitate the opening glass reactor cover the insertion of each assembly on 4 and extract, and guarantee the impermeability of each interface to prevent that gas leakage or air from entering system; With the aligning uniaxial compression pipe fitting 8 of built-in lasso by tapped hexagon lid 21, built-in lasso be with externally threaded pipeline adapter 22 to form, have measure-alike through hole on hexagon lid 21 with in pipeline adapter 22, each assembly on opening glass reactor lid 4 is inserted in the tapped hexagon lid 21 of aligning uniaxial compression pipe fitting 8, be inserted in the built-in lasso of aligning uniaxial compression pipe fitting 8 on each assembly, with each assembly Inserting Tube line adapter 22, screw the tapped hexagon lid 21 of aligning uniaxial compression pipe fitting 8, make each assembly fix and seal; External thread place at the pipeline adapter 22 of the uniaxial compression of the aligning with the built-in lasso pipe fitting 8 of different size is wrapped with the polytetrafluoro band, to guarantee 8 of aligning uniaxial compression pipes and opening glass reactor, covers 4 sealing; Opening glass reactor 1 is the flat cylindrical structural of heavy wall, and thick and flat flange is arranged on its mouthful, along flange, semi-circular recesses is arranged, and places flexible silicon resin O shape circle 5 in groove and seals; Opening glass reactor lid 4 is the stainless steel plectane that is complementary with opening glass reactor 1; Opening glass reactor 1 and opening glass reactor lid 4 are fixed by geometrical clamp, and geometrical clamp is comprised of two clips in up and down, and its size ratio open glass reactor 1 external diameter is slightly large; On the circumference of two clips up and down of geometrical clamp, flange is arranged, screw rod 7 and butterfly nut 6 are arranged on lower clip 2, be enclosed within opening glass reactor 1 flange bottom, the C type breach of upper slice clip 3 is placed on corrosion resistant plate; Screw rod 7 under flange on the circumference of the flange on 1 mouthful of opening glass reactor and two clips in geometrical clamp up and down, geometrical clamp on sheet clip 2 is all identical with quantity and the distribution situation of the C type breach on butterfly nut 6 and geometrical clamp upper slice clip 3, namely be three, and be and be uniformly distributed; Screw rod 7 is movably riveted under geometrical clamp on sheet clip 2, makes screw rod 7 to move in the C of geometrical clamp upper slice clip 3 type breach, facilitates the installation and removal of geometrical clamp upper slice clip; The part of butterfly nut 6 is placed on opening glass reactor lid 4, and butterfly nut 6 is evenly exerted oneself, and tightens butterfly nut 6, the screw rod 7 of two clips up and down by geometrical clamp and butterfly nut 6 make opening glass reactor 1 and opening glass reactor lid 4 fixing; On opening glass reactor lid 4, the diameter opening slightly larger than work sample 12 arranged; Fill in the first rubber stopper 11 of size coupling on this opening, fixing to work sample 12 and suspension sample 13, and opening glass reactor lid 4 is sealed; Opening glass reactor 1 adopts condenser pipe 14 to carry out condensation to the test medium in it, to reduce the volatilization of medium; Fill in the second rubber stopper 23 that is communicated with gas outlet tube 15 at the top of condenser pipe 14, inner tube and gas outlet tube 15 from the gas of opening glass reactor 1 interior discharge by condenser pipe 14 enter alkali liquor absorption bottle 16, by after the alkali liquor absorption in alkali liquor absorption bottle 16 by 17 dischargings of tail gas escape pipe.
Its manufacture method of described atmospheric closed multi-interface corrosion test device, is characterized in that comprising the steps:
The first step, opening glass reactor lid is cut out plate:, according to the shape and structure of opening glass reactor 1, determine the stainless steel plectane that is complementary with it and cover 4 as the opening glass reactor;
Second step, opening glass reactor cover gab: on opening glass reactor lid 4 according to opening glass reactor lid 4 on the be complementary uniaxial compression of the aligning with the built-in lasso pipe fitting 8 of hole internal diameter size of the dimensional configurations of each assembly, the externally threaded size of opening glass reactor lid 4 upper shed sizes and aligning uniaxial compression pipe fitting 8 is complementary; Then, according to experiment, need to determine aperture position, and mark respectively the position of opening on opening glass reactor lid 4, then adopt the hole making drill opening; And the opening on opening glass reactor lid 4 is respectively as contrast electrode 20 interfaces, work sample 12 and hang the shared interface of sample 13, auxiliary electrode 19 interfaces, pH electrode 9 interfaces, air intake opening 10, condenser pipe 14 interfaces and thermometer 18 interfaces; Wherein, work sample 12, contrast electrode 20 and auxiliary electrode 19 form galvanochemistry three electrode measurement systems, are connected with the respective electrode of outside electrochemical testing device respectively, and the corrosion behavior of work sample 12 is measured; In addition, in order to reduce the impact of solution resistance on electrochemical measurement, contrast electrode 20 is near work sample 12; In addition, the diameter of the shared interface of work sample 12 and suspension sample 13 is slightly larger than the diameter of work sample 12, and with atresia first rubber stopper 11 of size coupling, clogs;
The 3rd step, aligning uniaxial compression pipe fitting sealing: the external thread place at the pipeline adapter 22 of the uniaxial compression of the aligning with the built-in lasso pipe fitting 8 of different size is wrapped with the polytetrafluoro band, and be arranged on opening glass reactor lid 4, guarantee that aligning uniaxial compression pipe fitting 8 and opening glass reactor cover 4 sealing.
Its using method of described atmospheric closed multi-interface corrosion test device, is characterized in that comprising the steps:
The first step, put into test medium and seal test device: test medium is put into the flat columniform opening glass reactor 1 of heavy wall, lower clip 2 of geometrical clamp is enclosed within the flange of the flat columniform opening glass reactor 1 of heavy wall, puts into flexible silicon resin O shape circle 5 in the groove of flange; Decontrol a mouthful glass reactor lid 4 on the flat columniform opening glass reactor 1 of heavy wall, the upper slice clip 3 with C type breach is placed on opening glass reactor lid 4; Mobile screw 7 and butterfly nut 6, be stuck in the C type breach of a clip 3 screw rod 7, and the part of butterfly nut 6 is placed on opening glass reactor lid 4; Butterfly nut 6 is evenly exerted oneself, tighten butterfly nut 6, screw rod 7 and butterfly nut 6 are fixing with sheet clip 2, the flat columniform opening glass reactor 1 of heavy wall, opening glass reactor lid 4 and geometrical clamp upper slice clip 3 under geometrical clamp, and flexible silicon resin O shape circle 5 plays the air seal effect;
Second step, each assembly that installation and sealed open glass reactor cover: the tapped hexagon lid 21 that each assembly on opening glass reactor lid 4 is inserted in aligning uniaxial compression pipe fitting 8, be inserted in the built-in lasso of aligning uniaxial compression pipe fitting 8 on each assembly, with each assembly Inserting Tube line adapter 22, screw the tapped hexagon lid 21 of aligning uniaxial compression pipe fitting 8, make each assembly fix and seal;
The 3rd step, experiment exhaust emissions: beat the hole identical with gas outlet tube 15 diameters on the second rubber stopper 23 with condenser pipe 14 top dimension couplings, insert gas outlet tube 15, the second rubber stopper 23 is inserted condenser pipe 14 tops, enter alkali liquor absorption bottle 16 from the gas of opening glass reactor 1 interior discharge by condenser pipe 14 and gas outlet tube 15, discharged by tail gas escape pipe 17 after the alkali liquor absorption in alkali liquor absorption bottle 16;
In the 4th step, the experimental provision airtight test: open condensate water, when temperature that thermometer 18 shows,, with after experimental temperature is identical, open the gas cylinder main valve of experimental gas, whether adjusting gas flow, have bubble to emerge in inspection alkali liquor absorption bottle 16; , if there is bubble to emerge, illustrate that the impermeability of whole experimental provision is fine; If do not have bubble to emerge, in the illustrative experiment device, partial portion gas leakage, need to investigate one by one to system unit, guarantees sealing;
In the 5th step, experimental solutions pH value is regulated: the oxygen that dissolves in experimental solutions by emptying after, the pH value by pH electrode 9 adjusting experimental solutions reaches requirement of experiment;
The 6th step, work sample wire sealing: the first rubber stopper 11 that takes off atresia, make a call to a diameter with card punch than the slightly little aperture of work sample wire 24 diameters on the first rubber stopper 11, make work sample wire 24 pass aperture, the elasticity by the first rubber stopper 11 seals work sample wire 24;
The 7th step, work sample and the sealing of suspension sample: put into the suspension sample 13 after weighing, insert the first rubber stopper 11 that is plugged with work sample 12, by the elasticity of the first rubber stopper 11, the opening glass reactor is covered 4 and seal;
In the 8th step, test: work sample 12, contrast electrode 20 and auxiliary electrode 19 form galvanochemistry three electrode measurement systems, be connected with the respective electrode of outside electrochemical testing device respectively, thereby the corrosion behavior of work sample is measured; In order to reduce the impact of solution resistance on electrochemical measurement, contrast electrode 20 is near work sample 12.
With embodiment 1, difference is that opening glass reactor lid 4 is the teflon plectane; In the first step of described its manufacture method of atmospheric closed multi-interface corrosion test device, opening glass reactor lid is cut out in plate:, according to the shape and structure of opening glass reactor 1, determine the teflon plectane that is complementary with it and cover 4 as the opening glass reactor;
Like this in when work, atmospheric closed multi-interface corrosion test device of the present invention and production and preparation method thereof, its device impermeability is good, make simple and cost low, loading and unloading and easy to use; In addition, due to H
2S has toxicity, so using atmospheric closed multi-interface corrosion test device of the present invention to contain H
2During the corrosion experiment of S gas, in order to reduce contacting of experimenter and harmful gas, atmospheric closed multi-interface corrosion test device of the present utility model preferably is placed in fuming cupboard, the H in experimental gas
2S concentration also had better not surpass 100ppm.
The present invention compared with prior art has following advantage and good effect:
The object of the invention is to propose a kind of atmospheric closed multi-interface corrosion test device and production and preparation method thereof, its impermeability of this atmospheric closed multi-interface corrosion test device is good, manufacturing is simple and cost is low, loading and unloading and easy to use, be applicable to the corrosion behavior under the normal pressure venting condition, rule and mechanism research, as the CO of petroleum system equipment
2Corrosion research and H
2The S corrosion research, and the corrosion inhibition evaluation of corrosion inhibiter etc., in addition, atmospheric closed multi-interface corrosion test device of the present invention can carry out simulated experiment for a long time, and working pressure is normal pressure, and serviceability temperature can reach 80 ℃.
Obviously, the above embodiment of the present invention is only for example of the present invention clearly is described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here can't give all embodiments exhaustive.Everyly belong to the row that apparent variation that technical scheme of the present invention extends out or change still are in protection scope of the present invention.
Claims (3)
1. atmospheric closed multi-interface corrosion test device, comprise opening glass reactor (1) and opening glass reactor lid (4), it is characterized in that: opening glass reactor lid (4) is corrosion resistant plate or polyfluortetraethylene plate, need to be in corrosion resistant plate or polyfluortetraethylene plate upper shed according to experiment, the size of opening and position need opening on arrange openings glass reactor lid (4) respectively as the interface of contrast electrode (20) according to experiment, the shared interface of work sample (12) and suspension sample (13), the interface of auxiliary electrode (19), the interface of pH electrode (9), air intake opening (10), the interface of the interface of condenser pipe (14) and thermometer (18), work sample (12), contrast electrode (20) and auxiliary electrode (19) form galvanochemistry three electrode measurement systems, are connected with the respective electrode of outside electrochemical testing device respectively, and the corrosion behavior of work sample (12) is measured, in order to reduce the impact of solution resistance on electrochemical measurement, contrast electrode (20) is near work sample (12), opening glass reactor lid (4) upper shed size is complementary with the externally threaded size of aligning uniaxial compression pipe fitting (8) with built-in lasso, the size of upper each assembly of opening glass reactor lid (4) is complementary with the hole internal diameter size of the aligning uniaxial compression pipe fitting (8) with built-in lasso, to facilitate the opening glass reactor cover the insertion of each assembly on (4) and extract, and guarantee the impermeability of each interface to prevent that gas leakage or air from entering system, aligning uniaxial compression pipe fitting (8) with built-in lasso covers (21) by tapped hexagon, built-in lasso and be with externally threaded pipeline adapter (22) to form, hexagon lid (21) upward and in pipeline adapter (22) has measure-alike through hole, each assembly on opening glass reactor lid (4) is inserted in the tapped hexagon lid (21) of aligning uniaxial compression pipe fitting (8), be inserted in the built-in lasso of aligning uniaxial compression pipe fitting (8) on each assembly, with each assembly Inserting Tube line adapter (22), screw the tapped hexagon lid (21) of aligning uniaxial compression pipe fitting (8), make each assembly fix and seal, external thread place at the pipeline adapter (22) of the uniaxial compression of the aligning with the built-in lasso pipe fitting (8) of different size is wrapped with the polytetrafluoro band, to guarantee the sealing of aligning uniaxial compression pipe fitting (8) and opening glass reactor lid (4), opening glass reactor (1) is the flat cylindrical structural of heavy wall, and thick and flat flange is arranged on its mouthful, along flange, semi-circular recesses is arranged, and places flexible silicon resin O shape circle (5) in groove and seals, opening glass reactor lid (4) is stainless steel plectane or the teflon plectane that is complementary with opening glass reactor (1), opening glass reactor (1) and opening glass reactor lid (4) are fixed by geometrical clamp, and geometrical clamp is comprised of two clips in up and down, and its size ratio open glass reactor (1) external diameter is slightly large, on the circumference of two clips up and down of geometrical clamp, flange is arranged, screw rod (7) and butterfly nut (6) are arranged on lower clip (2), be enclosed within opening glass reactor (1) flange bottom, the C type breach of upper slice clip (3) is placed on corrosion resistant plate or polyfluortetraethylene plate, screw rod (7) is movably riveted under geometrical clamp on sheet clip (2), makes screw rod (7) to move in the C type breach of geometrical clamp upper slice clip (3), to facilitate the installation and removal of geometrical clamp upper slice clip (3), screw rod (7) under flange on the circumference of two clips in the flange on opening glass reactor (1) mouth and geometrical clamp up and down, geometrical clamp on sheet clip (2) is all identical with quantity and the distribution situation of the C type breach on butterfly nut (6) and geometrical clamp upper slice clip (3), the part of butterfly nut (6) is placed on opening glass reactor lid (4), to butterfly nut (6) evenly firmly, tighten butterfly nut (6), the screw rod of two clips up and down (7) by geometrical clamp and butterfly nut (6) make opening glass reactor (1) and opening glass reactor lid (4) fixing.
2. the manufacture method of atmospheric closed multi-interface corrosion test device according to claim 1, is characterized in that comprising the steps:
The first step, opening glass reactor lid is cut out plate:, according to the shape and structure of opening glass reactor (1), determine the corrosion resistant plate or the polyfluortetraethylene plate that are complementary with it and cover (4) as the opening glass reactor;
Second step, opening glass reactor cover gab: at the be complementary uniaxial compression of the aligning with the built-in lasso pipe fitting (8) of hole internal diameter size of the upper dimensional configurations according to upper each assembly of opening glass reactor lid (4) of opening glass reactor lid (4), the externally threaded size of opening glass reactor lid (4) upper shed size and aligning uniaxial compression pipe fitting (8) is complementary; Then, according to experiment, need to determine aperture position, and mark respectively the position of opening on opening glass reactor lid (4), then adopt the hole making drill opening; And, opening on opening glass reactor lid (4) is respectively as contrast electrode (20) interface, the shared interface of work sample (12) and suspension sample (13), auxiliary electrode (19) interface, pH electrode (9) interface, air intake opening (10), condenser pipe (14) interface and thermometer (18) interface; Wherein, work sample (12), contrast electrode (20) and auxiliary electrode (19) form galvanochemistry three electrode measurement systems, are connected with the respective electrode of outside electrochemical testing device respectively, and the corrosion behavior of work sample (12) is measured; In addition, in order to reduce the impact of solution resistance on electrochemical measurement, contrast electrode (20) is near work sample (12); In addition, the diameter of the shared interface of work sample (12) and suspension sample (13) is slightly larger than the diameter of work sample (12), and with atresia first rubber stopper (11) of size coupling, clogs;
The 3rd step, aligning uniaxial compression pipe fitting sealing: the external thread place at the pipeline adapter (22) of the uniaxial compression of the aligning with the built-in lasso pipe fitting (8) of different size is wrapped with the polytetrafluoro band, and be arranged on opening glass reactor lid (4), guarantee the sealing that aligning uniaxial compression pipe fitting (8) and opening glass reactor cover (4).
3. the using method of atmospheric closed multi-interface corrosion test device according to claim 1, is characterized in that comprising the steps:
The first step, put into test medium and seal test device: test medium is put into the flat columniform opening glass reactor of heavy wall (1), the lower clip (2) of geometrical clamp is enclosed within the flange of the flat columniform opening glass reactor of heavy wall (1), puts into flexible silicon resin O shape circle (5) in the groove of flange; At the upper mouthful glass reactor lid (4) of decontroling of the flat columniform opening glass reactor of heavy wall (1), the upper slice clip (3) with C type breach is placed on opening glass reactor lid (4); Mobile screw (7) and butterfly nut (6), be stuck in the C type breach of a clip (3) screw rod (7), and the part of butterfly nut (6) is placed on opening glass reactor lid (4); To butterfly nut (6) evenly firmly, tighten butterfly nut (6), screw rod (7) and butterfly nut (6) are fixing with sheet clip (2), the flat columniform opening glass reactor of heavy wall (1), opening glass reactor lid (4) and geometrical clamp upper slice clip (3) under geometrical clamp, and flexible silicon resin O shape circle (5) plays the air seal effect;
Second step, each assembly that installation and sealed open glass reactor cover: the tapped hexagon lid (21) that each assembly on opening glass reactor lid (4) is inserted in aligning uniaxial compression pipe fitting (8), be inserted in the built-in lasso of aligning uniaxial compression pipe fitting (8) on each assembly, with each assembly Inserting Tube line adapter (22), screw the tapped hexagon lid (21) of aligning uniaxial compression pipe fitting (8), make each assembly fix and seal;
The 3rd step, experiment exhaust emissions: at the second rubber stopper (23) with condenser pipe (14) top dimension coupling, upward beat the hole identical with gas outlet tube (15) diameter, insert gas outlet tube (15), the second rubber stopper (23) is inserted condenser pipe (14) top, enter alkali liquor absorption bottle (16) from the interior gas of discharging of opening glass reactor (1) by condenser pipe (14) and gas outlet tube (15), discharged by tail gas escape pipe (17) after the alkali liquor absorption in alkali liquor absorption bottle (16);
In the 4th step, the experimental provision airtight test: open condensate water, when temperature that thermometer (18) shows,, with after experimental temperature is identical, open the gas cylinder main valve of experimental gas, whether adjusting gas flow, have bubble to emerge in inspection alkali liquor absorption bottle (16); , if there is bubble to emerge, illustrate that the impermeability of whole experimental provision is fine; If do not have bubble to emerge, in the illustrative experiment device, partial portion gas leakage, need to investigate one by one to system unit, guarantees sealing;
In the 5th step, experimental solutions pH value is regulated: the oxygen that dissolves in experimental solutions by emptying after, the pH value by pH electrode (9) adjusting experimental solutions reaches requirement of experiment;
The 6th step, work sample wire sealing: the first rubber stopper (11) that takes off atresia, upward make a call to a diameter than the slightly little aperture of work sample wire (24) diameter with card punch at the first rubber stopper (11), make work sample wire (24) pass aperture, the elasticity by the first rubber stopper (11) seals work sample wire (24);
The 7th step, work sample and the sealing of suspension sample: put into the suspension sample (13) after weighing, insert the first rubber stopper (11) that is plugged with work sample (12), by the elasticity of the first rubber stopper (11), the opening glass reactor is covered (4) and seal;
The 8th step, test: work sample (12), contrast electrode (20) and auxiliary electrode (19) form galvanochemistry three electrode measurement systems, be connected with the respective electrode of outside electrochemical testing device respectively, thereby the corrosion behavior of work sample (12) is measured; In order to reduce the impact of solution resistance on electrochemical measurement, contrast electrode (20) is near work sample (12).
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| CN103868811A (en) * | 2014-03-13 | 2014-06-18 | 上海海隆石油钻具有限公司 | Hydrogen sulfide concentration control device for sulfide stress corrosion uniaxial tensile test |
| CN105510218A (en) * | 2015-12-29 | 2016-04-20 | 中国石油化工股份有限公司 | Solution-ionic-concentration-controlling experimental device and method |
| CN107782662A (en) * | 2017-10-19 | 2018-03-09 | 中石化炼化工程（集团）股份有限公司 | The method of cathode protection testing probe, device and evaluation metal cathodic protection effect in the seawater |
| CN107764729B (en) * | 2017-11-25 | 2023-11-17 | 江苏容大材料腐蚀检验有限公司 | Hydrogen induced cracking experimental device |
| CN111650118A (en) * | 2020-07-10 | 2020-09-11 | 中国民航大学 | Electrochemical corrosion system for evaluating local corrosion performance of aircraft structure and working method |
| CN111855557A (en) * | 2020-07-20 | 2020-10-30 | 广东省微生物研究所（广东省微生物分析检测中心） | Gas single-factor corrosion in-situ contrast experiment device and method in composite corrosion factors |
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