CN207123475U - A kind of simulation test device of oxide skin dissolution to parent metal material - Google Patents
A kind of simulation test device of oxide skin dissolution to parent metal material Download PDFInfo
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- CN207123475U CN207123475U CN201720692246.9U CN201720692246U CN207123475U CN 207123475 U CN207123475 U CN 207123475U CN 201720692246 U CN201720692246 U CN 201720692246U CN 207123475 U CN207123475 U CN 207123475U
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- oxide skin
- overcoat
- skin sample
- hole
- sample
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Abstract
A kind of simulation test device the utility model discloses oxide skin dissolution to parent metal material, including test button, oxide skin sample, test button overcoat, oxide skin sample overcoat, zero resistance current measurement instrument, cleaning solution case, kinetic pump, top and bottom of the oxide skin sample overcoat respectively with oxide skin sample are connected, test button connects test button overcoat, test button overcoat passes through oxide skin sample overcoat, zero resistance current measurement instrument and oxide skin sample, test button connects, cleaning solution case is connected with oxide skin sample overcoat and kinetic pump, kinetic pump is connected with oxide skin sample overcoat.
Description
Technical field
The utility model belongs to oxide skin corrosion experiment field, and particularly a kind of oxide skin dissolution is to parent metal material
Simulation test device.
Background technology
After the superheater of station boiler runs to certain time, the steam side surfaces of different superheater heat exchange tube materials can be because
Pyrogenic steam oxidation effect produces oxide skin (mainly based on the oxide of iron), after oxide scale growth is to certain thickness, no
The heat transfer efficiency of heat exchanger tube is reduced by only, peeling can be also produced and block heat exchanger tube or set with harm such as steam carrying erosion steam turbines
The related hidden danger of standby security.In order to improve the thermal efficiency of superheater tube and eliminate the relevant issues brought of scale spallation,
Need to use chemical cleaning method descaling.In Chemical cleaning, the automatic polarizing system evaluation method of generally use is main
It is corrosion coupon, the methods of monitoring pipe and electrochemical measurement of three electrodes or bipolar electrode is set.These automatic polarizing system methods
The real-time uniform corrosion rate of cleaning process sample or the average corrosion rate of whole process are mainly monitored or evaluate, to local appearance
The local corrosion velocity magnitude of scale spallation or fracture site can not be monitored or evaluate.
Utility model content
The purpose of this utility model is to scale spallation that may be present or cracking position, during oxide skin dissolution
The local corrosion velocity magnitude of generation carries out whole measurement, provides a kind of simulated test of oxide skin dissolution to parent metal material
Apparatus and method.
In order to solve the above problems, the simulated test the utility model proposes a kind of oxide skin dissolution to parent metal material
Device.
Technical scheme is used by the utility model：
A kind of oxide skin dissolution is to the simulation test device of parent metal material, including test button, oxide skin sample, gold
Belong to sample overcoat, oxide skin sample overcoat, zero resistance current measurement instrument, thermometric electrode, cleaning solution case, temperature controller,
Kinetic pump, top and bottom of the oxide skin sample overcoat respectively with oxide skin sample are connected, at the top of oxide skin sample overcoat
Three through holes are provided with, oxide skin sample jacket bottom is provided with a through hole, and test button bottom connects test button overcoat,
Test button overcoat and thermometric electrode both pass through one of through hole of oxide skin sample overcoat and are fixedly connected with both, zero electricity
Resistance current measurement instrument is connected with oxide skin sample, test button, and temperature controller is connected with thermometric electrode, cleaning solution case,
Cleaning solution case is connected with last through hole and kinetic pump of oxide skin sample overcoat, kinetic pump and oxide skin sample overcoat
Bottom through-hole connects.Using oxide skin sample as experimental subjects, and oxide skin sample environmental sealing is entered using oxide skin sample
And the cleaning fluid tank by being attached thereto is cleaned, and it is used as corrosion material by inserting the test button inside oxide skin sample
Material plays corrosiveness, and then creates the phenomenon that selective oxidation skin is peeled off or ruptured, then zero by being connected with oxide skin sample
Corrosion current data in resistor current measuring instrument measurement cleaning process, determine corrosion rate.
Further, in addition to temperature controller and thermometric electrode, the thermometric electrode pass through oxide skin sample overcoat
One of through hole simultaneously is secured to connect, and temperature controller is connected with thermometric electrode, cleaning solution case.Surveyed by thermometric electrode
The temperature of cleaning fluid in corrosion process is measured, the temperature of cleaning fluid is controlled using temperature controller, it is ensured that be rotten in whole measurement process
Erosion liquid is in the temperature of relative constancy, it is ensured that the stabilization of corrosion process, improves the measurement accuracy of corrosion rate.
Further, in addition to fastener, top and bottom of the fastener respectively with oxide skin sample overcoat are connected,
Fastener tip is provided with three through holes and the through hole coordinates with three through holes set at the top of oxide skin sample overcoat.Tightly
Firmware ensures that oxide skin sample overcoat is securely fastened on the outside of oxide skin sample, and then ensures oxide skin sample and oxidation skin test
The sealing of both sample overcoat faying faces, it is ensured that cleaning fluid will not be revealed, and prevent the failure of an experiment.
Preferably, in addition to heatproof flexible pipe, last of the cleaning solution case and fastener, oxide skin sample overcoat
Through hole is connected by heatproof flexible pipe, and cleaning solution case is connected with force piece by heatproof flexible pipe, outside force piece and oxide skin sample
Set bottom through-hole is connected by heatproof flexible pipe.Because cleaning fluid absorbs heat heating in corrosion process, ensured using heatproof flexible pipe clear
Washing lotion will not leak because of pipeline, prevent the failure of an experiment.
Preferably, in addition to valve, the heatproof flexible pipe between the force piece and oxide skin sample jacket bottom through hole are set
It is equipped with valve.It by the time length of Valve controlling corrosion test, can at any time stop testing, be easy to calculate corrosion rate.
Preferably, in addition to locking nut, the locking nut coordinate with test button overcoat.By locking nut by gold
Category sample is fixed on fastener, it is ensured that because of the corrosion of test button the sealing of device will not be caused to leak, be avoided pacifying
Full hidden danger.
The utility model compared with the existing technology has advantages below and effect：
1st, scale spallation that may be present or cracking position occur the utility model during oxide skin dissolution
Local corrosion velocity magnitude carries out whole measurement.
2nd, the utility model is fabricated to oxide skin dissolution sample and galvanic corrosion electricity using actual superheater oxidation leather hose sample
Pole, carry out real-time measurement of the oxide skin dissolution process to metal erosion speed.
3rd, the utility model can select to make difference according to the superheater heat exchanger tube and oxide skin of different metal material species
The oxide skin dissolution sample and metal galvanic couple electrode of material, are surveyed to the metal local corrosion speed of oxide skin dissolution process
Amount.
4th, the utility model can be used for evaluation superheater cleaning formulation and technique dissolving oxide skin process, to scale spallation
Or local corrosion velocity magnitude caused by fracture site metallic matrix.
Brief description of the drawings
The accompanying drawing for forming the part of the application is used for providing further understanding to of the present utility model, of the present utility model
Schematic description and description is used to explain the utility model, does not form to improper restriction of the present utility model.
Fig. 1 is structural representation of the present utility model.
Label declaration：
Zero resistance current measurement instrument 1；Temperature controller 2；Cleaning solution case 3；
Bar-shaped metal corrosion coupon 4；Nut 5；Bar-shaped metallic insulator overcoat 6；
Tubulose oxide skin insulating materials overcoat 7；Thermometric electrode 8；Oxide skin dissolution sample 9；
Strengthen steel plate 10；Circulating pump 11；Valve 12.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining this
Utility model, it is not used to limit the utility model.
Embodiment 1：As shown in figure 1, a kind of oxide skin dissolution takes scene to the simulation test device of parent metal material
The superheater tube sample obtained manufactures tubulose oxide skin dissolution sample 9 and bar-shaped metal corrosion coupon 4, and the rod of process mating
Shape metallic insulator overcoat 6 and tubulose oxide skin insulating materials overcoat 7 are tight by upper and lower two panels reinforcement steel plate 10 with fastening screw
Gu in the outside of tubulose oxide skin insulating materials overcoat 7, tubulose oxygen is fastened on upper and lower two panels tubulose oxide skin insulating materials overcoat 7
Change the outside of skin dissolved samples 9, it is ensured that the sealing on the composition surface of oxide skin dissolution sample 9, will with the nut 5 of insulating coating accessory processing
Bar-shaped metal corrosion coupon 4 fastens, it is ensured that the sealing on the bar-shaped composition surface of metal corrosion coupon 4, tubulose is connected respectively with copper conductor
Oxide skin dissolution sample 9 and shape metal corrosion coupon 4 connect thermometric electricity with copper conductor respectively to zero resistance current measurement instrument 1
Heater and temperature controller 2 in pole 8 and cleaning solution case 3, with snap joint by heatproof flexible pipe respectively with circulating pump 11, clear
Dilution case 3, valve 12 are connected with the inlet and outlet of device.
In use, opening circulating pump 11, circulating pump 11 drives cleaning fluid flowing, by thermometric electrode measurement corrosion process
The temperature of cleaning fluid, the temperature of cleaning fluid is controlled using temperature controller, cleaned by the measurement of zero resistance current measurement instrument 1
Corrosion current data in journey.
Embodiment 2：
The present embodiment is substantially the same manner as Example 1, and distinctive points are：Thermometric electrode and temperature control are not used in embodiment 2
Device processed, tubulose oxide skin dissolution sample 9 and shape metal corrosion coupon 4 are connected respectively with copper conductor to zero resistance current measuring instrument
Device 1, heatproof flexible pipe is connected with circulating pump 11, cleaning solution case 3, valve 12 with the inlet and outlet of device respectively with snap joint.
Embodiment 3：
The present embodiment is substantially the same manner as Example 1, and distinctive points are：Strengthening steel slab 10 is not used in embodiment 3, but
Hole is threaded by the bottom boss of the tubulose oxide skin insulating materials overcoat 7 in upper and lower two panels, by screwed hole with it is double
The cooperation of header stud fastens two panels tubulose oxide skin insulating materials overcoat 7.
Embodiment 4：
The present embodiment is substantially the same manner as Example 1, and distinctive points are：Valve is not used in embodiment 4, will with snap joint
Heatproof flexible pipe is connected with circulating pump 11, cleaning solution case 3 with the inlet and outlet of device respectively.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc., guarantor of the present utility model should be included in
Within the scope of shield.
Claims (6)
1. a kind of oxide skin dissolution is to the simulation test device of parent metal material, it is characterised in that including test button, oxidation
Skin test sample, test button overcoat, oxide skin sample overcoat, zero resistance current measurement instrument, cleaning solution case, kinetic pump, it is described
Top and bottom of the oxide skin sample overcoat respectively with oxide skin sample are connected, and three are provided with the top of oxide skin sample overcoat and is led to
Hole, oxide skin sample jacket bottom are provided with a through hole, test button bottom connection test button overcoat, test button overcoat
Through oxide skin sample overcoat one of through hole and be secured to connect, zero resistance current measurement instrument with oxidation skin test
Sample, test button connection, cleaning solution case are connected with last through hole and kinetic pump of oxide skin sample overcoat, kinetic pump
It is connected with oxide skin sample jacket bottom through hole.
2. oxide skin dissolution according to claim 1 is to the simulation test device of parent metal material, it is characterised in that also
Including temperature controller and thermometric electrode, the thermometric electrode passes through one of through hole of oxide skin sample overcoat and consolidated with it
Fixed connection, temperature controller are connected with thermometric electrode, cleaning solution case.
3. oxide skin dissolution according to claim 2 is to the simulation test device of parent metal material, it is characterised in that also
Including fastener, top and bottom of the fastener respectively with oxide skin sample overcoat are connected, and fastener tip is provided with three
Individual through hole and the through hole and three through holes cooperation of setting at the top of oxide skin sample overcoat.
4. oxide skin dissolution according to claim 3 is to the simulation test device of parent metal material, it is characterised in that also
Including heatproof flexible pipe, the cleaning solution case passes through heatproof flexible pipe with fastener, last through hole of oxide skin sample overcoat
Connection, cleaning solution case are connected with force piece by heatproof flexible pipe, and force piece passes through resistance to oxide skin sample jacket bottom through hole
Warm flexible pipe connection.
5. oxide skin dissolution according to claim 4 is to the simulation test device of parent metal material, it is characterised in that also
Including valve, the heatproof flexible pipe between the force piece and oxide skin sample jacket bottom through hole is provided with valve.
6. oxide skin dissolution according to claim 4 is to the simulation test device of parent metal material, it is characterised in that also
Including locking nut, the locking nut coordinates with test button overcoat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720692246.9U CN207123475U (en) | 2017-06-14 | 2017-06-14 | A kind of simulation test device of oxide skin dissolution to parent metal material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720692246.9U CN207123475U (en) | 2017-06-14 | 2017-06-14 | A kind of simulation test device of oxide skin dissolution to parent metal material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207123475U true CN207123475U (en) | 2018-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720692246.9U Active CN207123475U (en) | 2017-06-14 | 2017-06-14 | A kind of simulation test device of oxide skin dissolution to parent metal material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228820A (en) * | 2017-06-14 | 2017-10-03 | 华电电力科学研究院 | Simulation test device and method of a kind of oxide skin dissolution to parent metal material |
-
2017
- 2017-06-14 CN CN201720692246.9U patent/CN207123475U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228820A (en) * | 2017-06-14 | 2017-10-03 | 华电电力科学研究院 | Simulation test device and method of a kind of oxide skin dissolution to parent metal material |
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