CN207096062U - A kind of deaerating plant for corrosion test solution - Google Patents
A kind of deaerating plant for corrosion test solution Download PDFInfo
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- CN207096062U CN207096062U CN201720800641.4U CN201720800641U CN207096062U CN 207096062 U CN207096062 U CN 207096062U CN 201720800641 U CN201720800641 U CN 201720800641U CN 207096062 U CN207096062 U CN 207096062U
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- corrosion test
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Abstract
The utility model discloses a kind of deaerating plant for corrosion test solution, including High Purity Nitrogen gas cylinder, the High Purity Nitrogen gas cylinder divides two-way by the first triple valve, it is connected all the way with the vial equipped with corrosion test solution, another way is connected with the vial and corrosion test with closed container respectively by the second triple valve, and the corrosion test connects vavuum pump and vent gas treatment container with closed container respectively.The utility model is simple in construction, is easily assembled to, it is easy to operate, it is cheap, it can effectively remove the dissolved oxygen content in corrosion test solution, existing oxygen corrosion problem during current metal corrosion test is effectively avoided, improves the accuracy and validity of metal corrosion test evaluation.
Description
Technical field
The utility model belongs to metal erosion experimental technique field, more particularly to a kind of deoxygenation for corrosion test solution
Device.
Background technology
In oil gas field production, tubing and casing and delivery pipe are often due to CO2、H2S, the corrosion of elementary sulfur, stratum water etc. and make
Olefiant gas leakage accident, cause environmental pollution, personnel's injury and economic loss, the production run of serious threat oil gas field.
To ensure the safety in production of oil gas field, generally existed using laboratory corrosiontesting method evaluation tubing and casing, delivery pipe
Adaptability in oil gas field production status.However, the dissolved oxygen in corrosion test solution often leads to corrosion test result not
Accuracy.Oxygen is the part in air, is to cause metal parts that atmospheric corrosion and soil corrosion occurs in industrial production
Principal element.But the closed environment category oxygen-free environment of production of hydrocarbons, laboratory utilize corrosion tests evaluation metal material
During corrosion resistance, if the dissolved oxygen expeling not yet in effect in corrosion test solution, contribution of the dissolved oxygen to metal erosion are significantly larger than
Other corrosion factors (such as CO2And H2S), so as to causing corrosion test result very large deviation to be present.
At present, most laboratory by being passed through inert gas (such as nitrogen) into corrosion test solution to drive away in solution
Dissolved oxygen, but following both sides still be present：(1) deoxygenation is typically after corrosion test solution contacts with test button
Carry out, the oxygen corrosion for testing early stage is inevitable；(2) if oxidizable cation in oil gas field corrosive environment be present, corrosion
Cationic oxidation can be caused result invalid by experiment because of dissolved oxygen.
Utility model content
Technical problem to be solved in the utility model is to be directed to above-mentioned deficiency of the prior art, there is provided one kind is used for
The deaerating plant of corrosion test solution, dissolved oxygen that can thoroughly in Efficacy solution, avoid test button because of oxygen corrosion and
Cause result of the test deviation excessive or invalid.
The utility model uses following technical scheme：
A kind of deaerating plant for corrosion test solution, including High Purity Nitrogen gas cylinder, the High Purity Nitrogen gas cylinder pass through first
Triple valve divides two-way, is connected all the way with the vial equipped with corrosion test solution, another way by the second triple valve respectively with institute
State vial to be connected with corrosion test with closed container, the corrosion test is connected at vavuum pump and tail gas respectively with closed container
Manage container.
Further, pressure-reducing valve is disposed between the High Purity Nitrogen gas cylinder and first triple valve, first is screwed
Valve and the first deoxidation box, the deoxidier for reducing the oxygen content in source nitrogen is provided with the first deoxidation box.
Further, first triple valve is all the way connected by stop valve with the glass tube, in the glass tube
Porous ceramics is provided with, the stop valve is connected with the porous ceramics.
Further, water container is also associated with the vial, the water container passes through the second deoxidation box successively
Valve is screwed with second to be connected in the vial, the pipe end in the vial is higher than the position of the porous ceramics.
Further, it is provided with the 3rd between one article of branch road of second triple valve and the vial and screws valve, separately
One branch road is connected with the corrosion test with closed container, for control import corrosion test with the medium in closed container come
Source.
Further, the vent gas treatment container is successively by the 3rd deoxidation box, the 3rd triple valve and the corrosion test
Connected with closed container, drive away the air in the corrosion test container using the high pure nitrogen of deoxidation.
Further, the vavuum pump connects by pressure vacuum gauge, the 3rd triple valve and the corrosion test container successively
Connect.
Further, seal rubber plug is set with the vial, for ensuring the sealing of vial.
Further, the pressure of the High Purity Nitrogen gas cylinder 1 is not less than 5MPa, and nitrogen gas purity is not less than 99.99%.
Compared with prior art, the utility model at least has the advantages that：
The High Purity Nitrogen gas cylinder that the utility model is used for corrosion test solution deaerating plant divides two-way by the first triple valve, and one
Road is connected in the vial equipped with corrosion test solution, and another way divides two-way by the second triple valve, respectively with vial and
Corrosion test is connected with closed container, and corrosion test is connected at vavuum pump and tail gas respectively with closed container by the 3rd triple valve
Container is managed, nitrogen stream can be divided into two lines by the first triple valve, and a line enters etchant solution and carries out deoxygenation, and another line, which enters corrosion, to be tried
The air tested in container expeling corrosion test container, while the whereabouts to nitrogen stream can be effectively controlled, the second triple valve is used for controlling
The medium sources that system is imported in corrosion test container so that the corrosion test solution after deoxygenation is because of suction function importing corrosion test
In container, and held by caused poisonous or corrosivity tail gas during vent gas treatment container processing corrosion test, vent gas treatment
Device can be because depending on the gaseous species that are related in corrosion test, not influenceing the discharge of high pure nitrogen.
Further, powder deoxidier is placed in deoxidation box, the purpose is to the nitrogen progress in High Purity Nitrogen gas cylinder out
Preliminary deoxygenation, to reduce the oxygen content in source nitrogen.
Further, the porous ceramics of setting can be by the nitrogen dispersion in tubule in corrosion test solution, to improve
The contacting efficiency of nitrogen and corrosion test solution, porous ceramics can effective gas dispersion, porosity should be not less than 75%, hole chi
It is very little to should be less than 0.5mm.
Further, the pressure for the High Purity Nitrogen gas cylinder that the present apparatus uses is at least 5MPa, and nitrogen gas purity is at least
99.99%, deoxidation box can effectively remove the oxygen impurities in high pure nitrogen, and removal efficiency should reach more than 95%, wide mouth glass bottle
Capacity is not more than 10L, and seal rubber plug should be supporting with wide mouth glass bottle, ensures good sealing, and corrosion test solution answers root
Configured according to inorganic salts, in the presence of having organic matter not soluble in water, can be led because organic matter is adsorbed in wide mouth glass bottle bottle wall
The reduction of its concentration is caused, the volume of corrosion test solution is not more than the 75% of wide mouth glass bottle capacity.
Further, pressure vacuum gauge should be able to cover the limiting pressure range of vavuum pump, and can accurately show corrosion test
Pressure in container, the limiting pressure of vavuum pump reach≤0.06Pa, and the flow of high pure nitrogen should be able to be controlled in 50-200ml/
min。
In summary, the utility model is simple in construction, is easily assembled to, easy to operate, cheap, can effectively remove corruption
Dissolved oxygen content in corrosion test solution, existing oxygen corrosion problem during current metal corrosion test is effectively avoided, improved
The accuracy and validity of metal corrosion test evaluation.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is the schematic diagram of the device provided by the utility model for corrosion test solution deoxygenation.
Wherein：1. High Purity Nitrogen gas cylinder；2. pressure-reducing valve；3. first screws valve；4. the first deoxidation box；5. the first triple valve；6.
Stop valve；7. porous ceramics；8. second screws valve；9. the second deoxidation box；10. water container；11. seal rubber plug；12. glass
Bottle；13. corrosion test solution；14. the 3rd screws valve；15. the second triple valve；16. corrosion test closed container；17. the 3rd
Triple valve；18. the 3rd deoxidation box；19. vent gas treatment container；20. pressure vacuum gauge；21. vavuum pump.
Embodiment
In description of the present utility model, it is to be understood that the orientation of the instruction such as term " top ", " bottom ", " interior ", " outer "
Or position relationship is based on orientation shown in the drawings or position relationship, is for only for ease of description the utility model and simplification is retouched
State, rather than instruction or imply signified device or element there must be specific orientation, with specific azimuth configuration and operation,
Therefore it is not intended that to limitation of the present utility model.In addition, term " first ", " second " are only used for describing purpose, and can not
It is interpreted as indicating or implies relative importance or imply the quantity of the technical characteristic indicated by indicating.Thus, define " the
One ", one or more this feature can be expressed or be implicitly included to the feature of " second ".In description of the present utility model
In, unless otherwise indicated, " multiple " are meant that two or more.
The utility model provides a kind of deaerating plant for corrosion test solution, and high pure nitrogen is removed using deoxidation box
In oxygen impurities；Corrosion test solution and test button are directly contacted before avoiding deoxygenation and produce oxygen corrosion；Respectively to corrosion
After test chamber and corrosion test solution carry out deoxygenation, corrosion test solution is imported into corruption using the negative pressure in corrosion test container
Corrosion test container, and continue deoxygenation 1h, by the Control for Oxygen Content in corrosion test solution in below 1ppm.
Referring to Fig. 1, a kind of deaerating plant for corrosion test solution of the utility model includes High Purity Nitrogen gas cylinder 1, subtracted
Pressure valve 2, first screw valve 3, the first deoxidation box 4, the first triple valve 5, stop valve 6, porous ceramics 7, second screw valve 8, second
Deoxidation box 9, water container 10, seal rubber plug 11, vial 12, corrosion test solution the 13, the 3rd screw valve 14, the second triple valve
15th, corrosion test closed container 16, the 3rd triple valve 17, deoxidation box 18, vent gas treatment container 19, pressure vacuum gauge 20 and true
Empty pump 21, the specific requirement and effect of each part are as follows：
The High Purity Nitrogen gas cylinder 1 divides two-way by the first triple valve 5, is connected to the glass equipped with corrosion test solution 13 all the way
In glass bottle 12, another way is connected with the second triple valve 15, and second triple valve 15 divides two-way, respectively with the vial 12 and
Corrosion test closed container 16 connects, and is also associated with water container 10 in the vial 12, and the corrosion test is with closed
Container 16 connects vavuum pump 21 and vent gas treatment container 19 respectively by the 3rd triple valve 17.
Pressure-reducing valve 2 is disposed between the High Purity Nitrogen gas cylinder 1 and first triple valve 5, first screws valve 3 and
One deoxidation box 4, wherein, the High Purity Nitrogen gas cylinder 1 is the capital equipment of corrosion test solution deoxygenation, must ensure enough pressure and
Nitrogen gas purity, storage pressure is typically required in more than 5MPa, nitrogen gas purity is more than 99.99%；Put in the first deoxidation box 4
Powder deoxidier is put, the purpose is to carry out preliminary deoxygenation to the nitrogen in High Purity Nitrogen gas cylinder 1 out, to reduce the oxygen in source nitrogen
Content.
First triple valve 5 is connected by stop valve 6 with the glass tube 12 all the way, is set in the glass tube 12
There is porous ceramics 7, the stop valve 6 is connected with the porous ceramics 7, and corrosion test solution 13 is the object of deoxygenation, and solution is high
Degree must be higher than the porous ceramics 7, and the effect of the porous ceramics 7 is in corrosion test solution by the nitrogen dispersion in tubule
In, to improve the contacting efficiency of nitrogen and corrosion test solution.
The water container 10 screws valve 8 by the second deoxidation box 9 and second successively and is connected in the vial 12, institute
State the position that the pipe end in vial 12 is higher than the porous ceramics 7.
The effect of the water container 10 is how much to judge the sealing of vial 12 according to bubble in oxygen removal process；Institute
It is after the completion of working as deoxygenation to state the second effect for screwing valve 8, and the pouring in down a chimney into corrosion test solution of extraneous air can be prevented by closing it；
Powder deoxidier is placed in the second deoxidation box 9, the purpose is to after deoxygenation, reduce the second oxygen for screwing the both ends of valve 8
Concentration difference, anti-block penetrate into second and screw valve 8 and enter corrosion test solution.
The 3rd is provided between the one article of branch road and the vial 12 of second triple valve 15 and screws valve 14, described
Three screw valve 14 is closed all the time in oxygen removal process, and vacuum reaches to the end of deoxygenation and in corrosion test container 16
Opened again after it is required that, to cause the corrosion test solution 13 of deoxygenation because suction function is imported in corrosion test container 16, the two or three
Another branch road of port valve 15 is connected with corrosion test closed container 16, and corrosion test closed container 16 is imported for controlling
In medium sources.
The vent gas treatment container 19 is successively by the 3rd deoxidation box 18, the 3rd triple valve 17 and the corrosion test with close
Close container 16 to connect, the effect of the vent gas treatment container 19 is caused poisonous or corrosivity tail during processing corrosion test
Gas, when one end that the 3rd triple valve 17 and the 3rd deoxidation box 18 are connected is opened, driven away using the high pure nitrogen of deoxidation
Air in corrosion test container 16, untill the high pure nitrogen that corrosion test container 16 is all deoxidized is full of.
The effect of 3rd deoxidation box 18 is similar to the effect of the second deoxidation box 9, be anti-block the 3rd triple valve 17 of infiltration and
Into corrosion test solution.
The vavuum pump 21 connects by pressure vacuum gauge 20, the 3rd triple valve 17 with the corrosion test container 16 successively
Connecing, when pipeline is connected so that the vacuum in corrosion test container 16 reaches requirement, wherein, the limiting pressure of vavuum pump 21
It is required that≤0.06Pa.
Generally, one end that the second triple valve 15 and the first triple valve 5 are connected first is opened, to cause the height of deoxidation
Pure nitrogen gas enter corrosion test container 16 in drive away air therein after, the end is closed.
When the vacuum in corrosion test container 16 reaches requirement, then open the second triple valve 15 and the 3rd and screw valve 14
One end being connected so that the corrosion test solution 13 after deoxygenation is because in suction function importing corrosion test container 16.
Seal rubber plug 11 is set with the vial 12, for ensuring the sealing of vial.
The application method of device that the utility model is used for corrosion test solution deoxygenation is specially：
S1,4~8L corrosion tests solution 13 is placed in the vial 12 that capacity is 10L, utilizes seal rubber plug 11 will
Vial 12 seals, and ensures that porous ceramics 7 is immersed in the bottom of corrosion test solution 13；
S2, pressure-reducing valve 2, first are screwed into valve 3 are placed in open mode, screw valve 8 by second, stop valve 6 and the 3rd screws
Valve 14 is placed in off, and the first triple valve 5 is connected with the second triple valve 15, the 3rd triple valve 17 connects with the 3rd deoxidation box 18
It is logical, high pure nitrogen is passed through from High Purity Nitrogen gas cylinder 1, after the preliminary deoxidation of the first deoxidation box 4, through the first triple valve 5, the second threeway
Valve 15 enters corrosion test container 16, the air in corrosion test container 16 is driven away, through the 3rd triple valve 17, the 3rd deoxidation box
18th, discharged after vent gas treatment container 19, while cause the high pure nitrogen that deoxidation is full of in corrosion test container 16；
S3, by the triple valve 15 of pressure-reducing valve 2 and second is closed, the 3rd triple valve 17 connects with pressure gauge 20, open vavuum pump
21, the pressure in corrosion test container 16 is reached 0.1Pa；
S4, pressure-reducing valve 2, first are screwed to valve 3, stop valve 6, second valve 8 is screwed and is placed in open mode, valve is screwed by the 3rd
14th, the second triple valve 15, the 3rd triple valve 17 are placed in off, and the first triple valve 5 are connected with stop valve 6, then High Purity Nitrogen
High pure nitrogen in gas cylinder 1 enters after the 4 preliminary deoxygenation of the first deoxidation box through the first triple valve 5, stop valve 6 and porous ceramics 7
In corrosion test solution 13, produce largely scattered bubbles, drive away dissolved oxygen in corrosion test solution 13 through second screw valve 8,
Second deoxidation box 9 and water container 10 and discharge, it is 100ml/min to control high pure nitrogen flow, and the duration is because of corrosion test
The volume of solution 13 and it is different, at least ensure per the 1L solution deoxygenation times be 1h；
S5, pressure-reducing valve 2, first are screwed to valve 3, the first triple valve 5, stop valve 6, second valve 8 is screwed and is placed in off,
Screw valve 14 by the 3rd and be placed in open mode, by the second triple valve 15 with the 3rd screw valve 14 connect, the 3rd triple valve 17 and pressure
Power table 20 is connected, and corrosion test solution 13 is imported in corrosion test container 16 because of the negative pressure in corrosion test container 16；
S6, stop valve 6, second screw to valve the 8, the 3rd screws valve 14 and vavuum pump 21 is placed in off, by the one or three
Port valve 5 connects with the second triple valve 15, the second triple valve 15 connects with corrosion test container 16, the 3rd triple valve 17 and the 3rd is de-
Oxygen box 18 connects, and pressure-reducing valve 2, first are screwed into valve 3 is placed in open mode, continues to be passed through high pure nitrogen to corrosion test container 16
In corrosion test solution deoxygenation 1h after, the dissolved oxygen content in corrosion test solution is in below 1ppm.
Above content is only to illustrate technological thought of the present utility model, it is impossible to limits protection model of the present utility model with this
Enclose, it is every according to the utility model proposes technological thought, any change done on the basis of technical scheme, each fall within this reality
Within protection domain with new claims.
Claims (9)
1. a kind of deaerating plant for corrosion test solution, it is characterised in that including High Purity Nitrogen gas cylinder (1), the High Purity Nitrogen
Gas cylinder (1) divides two-way by the first triple valve (5), is connected all the way with the vial (12) equipped with corrosion test solution (13), separately
It is connected respectively with the vial (12) and corrosion test with closed container (16) by the second triple valve (15) all the way, the corruption
Corrosion test connects vavuum pump (21) and vent gas treatment container (19) respectively with closed container (16).
A kind of 2. deaerating plant for corrosion test solution according to claim 1, it is characterised in that the High Purity Nitrogen
Pressure-reducing valve (2) is disposed between gas cylinder (1) and first triple valve (5), first screws valve (3) and the first deoxidation box
(4) deoxidier for reducing the oxygen content in source nitrogen, is provided with the first deoxidation box (4).
3. a kind of deaerating plant for corrosion test solution according to claim 1, it is characterised in that the described 1st
Port valve (5) is connected by stop valve (6) with the vial (12) all the way, and porous ceramics is provided with the vial (12)
(7), the stop valve (6) is connected with the porous ceramics (7).
A kind of 4. deaerating plant for corrosion test solution according to claim 3, it is characterised in that the vial
(12) water container (10) is also associated with, the water container (10) screws valve by the second deoxidation box (9) and second successively
(8) it is connected in the vial (12), the pipe end in the vial (12) is higher than the position of the porous ceramics (7)
Put.
5. a kind of deaerating plant for corrosion test solution according to claim 1, it is characterised in that the described 2nd 3
The 3rd is provided between the one article of branch road and the vial (12) of port valve (15) and screws valve (14), another branch road and the corruption
Corrosion test is connected with closed container (16), for controlling the medium sources imported in corrosion test closed container (16).
6. a kind of deaerating plant for corrosion test solution according to claim 1, it is characterised in that at the tail gas
Container (19) is managed successively by the 3rd deoxidation box (18), the 3rd triple valve (17) with the corrosion test with closed container (16) to be connected
Connect, drive away the air in the corrosion test container (16) using the high pure nitrogen of deoxidation.
A kind of 7. deaerating plant for corrosion test solution according to claim 1, it is characterised in that the vavuum pump
(21) it is connected successively by pressure vacuum gauge (20), the 3rd triple valve (17) with the corrosion test container (16).
A kind of 8. deaerating plant for corrosion test solution according to claim 1, it is characterised in that the vial
(12) seal rubber plug (11) is set with, for ensuring the sealing of vial.
A kind of 9. deaerating plant for corrosion test solution according to claim 1, it is characterised in that the High Purity Nitrogen
The pressure of gas cylinder 1 is not less than 5MPa, and nitrogen gas purity is not less than 99.99%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720800641.4U CN207096062U (en) | 2017-07-04 | 2017-07-04 | A kind of deaerating plant for corrosion test solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720800641.4U CN207096062U (en) | 2017-07-04 | 2017-07-04 | A kind of deaerating plant for corrosion test solution |
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| Publication Number | Publication Date |
|---|---|
| CN207096062U true CN207096062U (en) | 2018-03-13 |
Family
ID=61555453
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| CN201720800641.4U Active CN207096062U (en) | 2017-07-04 | 2017-07-04 | A kind of deaerating plant for corrosion test solution |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680709A (en) * | 2018-06-12 | 2018-10-19 | 北京迪威尔石油天然气技术开发有限公司 | A kind of evaluating apparatus of oxygen scavenger performance |
| CN108828160A (en) * | 2018-09-05 | 2018-11-16 | 安科工程技术研究院（北京）有限公司 | Test the portable unit of corrosive gas and dissolved oxygen in oil gas pipeline |
| CN108872055A (en) * | 2018-08-01 | 2018-11-23 | 中国石油天然气集团有限公司 | A kind of pre- deoxygenation detection of corrosion test solution and chemicals dosing plant and method |
| CN108896474A (en) * | 2018-08-01 | 2018-11-27 | 中国石油天然气集团有限公司 | A kind of corrosion evaluating device and method of high temperature real-time monitoring dissolved oxygen concentration |
| CN109211759A (en) * | 2017-07-04 | 2019-01-15 | 中国石油天然气集团公司 | A kind of deaerating plant and its operating method for corrosion test solution |
| CN110542643A (en) * | 2018-06-06 | 2019-12-06 | 中昊清远(北京)科技有限公司 | Corrosion and aging test equipment for simulating marine multi-zone environment |
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2017
- 2017-07-04 CN CN201720800641.4U patent/CN207096062U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211759A (en) * | 2017-07-04 | 2019-01-15 | 中国石油天然气集团公司 | A kind of deaerating plant and its operating method for corrosion test solution |
| CN109211759B (en) * | 2017-07-04 | 2024-03-01 | 中国石油天然气集团公司 | Deoxidizing device for corrosion test solution and operation method thereof |
| CN110542643A (en) * | 2018-06-06 | 2019-12-06 | 中昊清远(北京)科技有限公司 | Corrosion and aging test equipment for simulating marine multi-zone environment |
| CN108680709A (en) * | 2018-06-12 | 2018-10-19 | 北京迪威尔石油天然气技术开发有限公司 | A kind of evaluating apparatus of oxygen scavenger performance |
| CN108872055A (en) * | 2018-08-01 | 2018-11-23 | 中国石油天然气集团有限公司 | A kind of pre- deoxygenation detection of corrosion test solution and chemicals dosing plant and method |
| CN108896474A (en) * | 2018-08-01 | 2018-11-27 | 中国石油天然气集团有限公司 | A kind of corrosion evaluating device and method of high temperature real-time monitoring dissolved oxygen concentration |
| CN108896474B (en) * | 2018-08-01 | 2023-07-25 | 中国石油天然气集团有限公司 | Corrosion evaluation device and method for monitoring concentration of dissolved oxygen at high temperature in real time |
| CN108828160A (en) * | 2018-09-05 | 2018-11-16 | 安科工程技术研究院（北京）有限公司 | Test the portable unit of corrosive gas and dissolved oxygen in oil gas pipeline |
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