CN205483964U - Duct flow formula developments galvanic corrosion test fixture device - Google Patents
Duct flow formula developments galvanic corrosion test fixture device Download PDFInfo
- Publication number
- CN205483964U CN205483964U CN201620290962.XU CN201620290962U CN205483964U CN 205483964 U CN205483964 U CN 205483964U CN 201620290962 U CN201620290962 U CN 201620290962U CN 205483964 U CN205483964 U CN 205483964U
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- Prior art keywords
- left end
- galvanic corrosion
- end cap
- insulation sleeve
- sleeve
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- Expired - Fee Related
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- 238000005260 corrosion Methods 0.000 title claims abstract description 52
- 230000007797 corrosion Effects 0.000 title claims abstract description 51
- 238000012360 testing method Methods 0.000 title claims abstract description 35
- 238000011161 development Methods 0.000 title abstract 2
- 230000018109 developmental process Effects 0.000 title abstract 2
- 238000009413 insulation Methods 0.000 claims description 40
- 239000002184 metal Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 238000000034 method Methods 0.000 abstract description 6
- 238000011160 research Methods 0.000 abstract description 4
- 239000011810 insulating material Substances 0.000 abstract 2
- 238000012545 processing Methods 0.000 abstract 2
- 238000005246 galvanizing Methods 0.000 description 7
- 230000003628 erosive effect Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000013535 sea water Substances 0.000 description 6
- 238000003556 assay Methods 0.000 description 5
- 238000009991 scouring Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 241000168254 Siro Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005479 sherardizing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Abstract
The utility model relates to a duct flow formula developments galvanic corrosion test fixture device, including left end lid, right -hand member lid, negative pole insulating sleeve, positive pole insulating sleeve and middle insulating cylinder, middle insulating cylinder is located between negative pole insulating sleeve and the positive pole insulating sleeve, left end lid and right -hand member lid adopt insulating material processing to form, respectively process one section screwed pipe in the outside of left end lid and right -hand member lid to the convenience is connected with outside pipeline, negative pole insulating sleeve and positive pole insulating sleeve adopt insulating material processing to form sleeve internally mounted tubulose sample. The utility model provides a test the fixture device of galvanic corrosion performance under corrosive medium flow state, can be according to the needs of research process, the adjusting device size, the galvanic corrosion that can carry out long -pending the same and the different area ratio of negative and positive pole -face tests, device easy operation, easy dismounting, the leakproofness is good, and the experimental result is reliable, the repeatability is strong.
Description
Technical field:
This utility model relates to a kind of assay device, it is specifically related to a kind of new fluid-guiding type galvanizing corrosion test grip device,, between any two kinds of metal materials, in solution medium, there is the experimental study of galvanic corrosion in especially a kind of dynamic galvanic corrosion test fixture device.
Background technology:
Metal current material is widely used in the offshore engineering structure field such as boats and ships, harbour, in harsh marine corrosion environment, in order to meet the intensity of component, rigidity and use requirement, generally requiring the different types of metal material of employing, this will cause the generation of galvanic corrosion.Galvanic corrosion, in addition to the corrosion that can make anode member accelerates the failure, also can be induced the generation of the even situation such as the spot corrosion of accelerated stress burn into, crevice corrosion, hydrogen embrittlement, not only result in heavy economic losses, even can produce personnel casualty accidents.The speed occurred for galvanic corrosion in accurate judgement system, scientific research personnel have developed different types of galvanic corrosion experimental provision.Galvanizing corrosion test great majority in existing laboratory use static sea water as corrosive medium, and this assay device is simple, it is easy to accomplish；But real Hai Huanjingzhonghaishui has certain flow velocity, fluidised form, much more serious than in static sea water of the extent of corrosion of material under the conditions of seawater scouring, static sea water the experimental data obtained is difficult to really reflect storeroom real galvanic corrosion tendency and degree；And, in the research process of galvanic corrosion, between material, the area ratio of (anode and cathode) is the key factor affecting galvanic corrosion, but a kind of can accurately determine that area ratio is to study the assay device of galvanic corrosion；Accordingly, it would be desirable to design a kind of galvanic corrosion can either simulated in dynamic solution environmental, can easily determine again the test fixture device of ratio of cathodic to anodic area.The test method simulating dynamic solution environmental in prior art has rotation to wash away, pipe flow washes away, injecting type washes away, such as patent of invention 201010603782.X " a kind of revolving type experiments device simulating inner-walls of duct erosion corrosion " uses pie or cylinder shaped test piece, the work surface of sample is towards differing, it is unfavorable for the transmission of Galvanic Current, it is impossible to simulation fluid is along the axial erosion corrosion behavior of inner-walls of duct well；Patent of invention 200720014413.0 " jetting type liquid-solid double-phase scouring corrosion assay device " and 200810249618.6 " multifunctional base injection type cavitation corrosion test devices " can accurately control to impact the flow velocity of liquid stream, can change the angle of attack washed away, simulation different pressures condition, but actual working conditions can not be simulated well, scouring intensity is bigger than practical situation, has a certain distance with the actual erosion corrosion condition of pump, pipeline.Patent of invention 201310248151.4 " pipe flow type inner wall erosion corrosion test device ", for the sherardizing steel performance of actual tubing is made evaluation, solve the problem that traditional fluid-guiding type erosion-corrosion experiment device construction cost is high, can preferably simulate the fluid axial erosion corrosion behavior along inner-walls of duct, but the installation of existing fluid-guiding type device sample, dismounting complexity, sample position is not easy to fix, system is unstable, being difficult to control to the area ratio between cathode and anode sample, extraneous factor interference is big.
Summary of the invention
This utility model is for the deficiencies in the prior art, it is proposed that a kind of fluid-guiding type dynamic galvanic corrosion test fixture device.The sample that traditional galvanizing corrosion test exists is installed, dismounting complexity, sample position is not fixed easily, extraneous factor interference is big, this utility model is under self-control flow-type tank Scouring Condition, the fluid-guiding type assay device that galvanic corrosion occurs between a kind of any two kinds of different metal materials is provided, break through the existing limitation that can only carry out galvanizing corrosion test in static sea water, it is achieved under the dynamic environmental conditions of seawater scouring, carry out the galvanic corrosion test between different materials.This device can carry out the identical galvanizing corrosion test with different area ratio of negative and positive area, it is also possible to the galvanic corrosion carrying out identical or different area ratio soaks zero-G test (coutroi velocity is 0 m/s).Ratio of cathodic to anodic area inaccuracy when improving conventional galvanizing corrosion test, manufacture the situation that working electrode is complicated and test is unstable.Test sample used is tubulose, is mounted directly, and without approved sample, device can directly be connected with galvanic corrosion measuring instrument with metal yin, yang electrode, reference electrode.This invention is simple to operate, convenient disassembly, good airproof performance, and application prospect is extensive.
Technical solutions of the utility model are: a kind of fluid-guiding type dynamic galvanic corrosion test fixture device, described device is cylindrical structure, including by left end cap, right end cap, cathode insulation sleeve, anodized insulation sleeve, five parts of intermediate insulation cylinder, each several part is connected and fixed by four fastening bolts；Cathode and anode insulating sleeve internally installed tubulose sample, cathode insulation sleeve, anodized insulation sleeve two ends by gasket seal respectively with left and right end cap and intermediate insulation cylinder compact siro spinning technology, respectively inlay a metal electrode can being in close contact with tubulose sample on cathode and anode insulating sleeve, draw wire on the top of metal electrode and be connected with galvanic corrosion measuring instrument respectively；Being machined with reference electrode installing hole on intermediate insulation cylinder, reference electrode can be zinc bar, two bolts and fixed plate are fixed on intermediate insulation cylinder, and realizes sealing by pad.
The work process of this grip device is as follows: place two tubulose samples in the through hole of cathode and anode insulating sleeve, apply pressure by four bolts to the left end cap and right end cap being emitted on both sides realize the clamping to two test sample and fix, finally install metal electrode and reference electrode, be connected with galvanic corrosion measuring instrument by wire；Left and right end cap is connected with outer pipeline, under the dynamic environment of media flow, carries out the galvanic corrosion testing experiment between different materials.
This utility model has the advantages that
1) can be according to the needs of research process, adjusting means size, it is possible to carry out the identical galvanizing corrosion test with different area ratio of anode and cathode area；Tubulose sample directly shapes according to dimensional requirement, and sample non-working surface, inside insulating sleeve, seals reliable, it is not necessary to extra closing and isolation；And reference electrode is fixed in the middle of two samples, can effectively ensure that the accuracy of test data；Additionally sample is connected with galvanic corrosion measuring instrument by metal electrode extraction wire, manufactures working electrode convenient and reliable；And due to the existence of intermediate insulation cylinder, easily two test sample can be fixed on a spacing keep constant accurately.
2) this utility model is simple to operate, convenient disassembly, good airproof performance, low cost, and result of the test is stable, and repeatability is strong, can be widely applied in experimental study.
Accompanying drawing explanation
Fig. 1 is that the master of this utility model grip device regards view in full section；
Fig. 2 is the left view of this utility model grip device；
Fig. 3 is that the master of this utility model grip device cathode insulation sleeve regards view in full section；
Fig. 4 is the top view of this utility model grip device intermediate insulation cylinder；
Fig. 5 is this utility model grip device intermediate insulation cylinder sectional view；
Fig. 6 is the top perspective view of this utility model grip device reference electrode fixed plate.
In figure: 1, gasket seal I；2, fastening bolt I；3, left end cap；4, metal electrode；5, cathode insulation sleeve；6, intermediate insulation cylinder；7, fastening bolt II；8, fixed plate；9, reference electrode；10, gasket seal II；11, anodized insulation sleeve；12, right end cap；13, wire；14, wire；15, sample one；16, sample two；17, reference electrode installing hole.
Detailed description of the invention:
The implementation process of this utility model grip device is described in detail in conjunction with accompanying drawing.As shown in figs 1 to 6, the main support of experiment device for couple corrosion is four fastening bolts I 2, and bolt is symmetrical, is fixed on the surrounding (Fig. 2) of device；It is shaped with screwed hole, to realize threaded (Fig. 3) with metal electrode above cathode insulation sleeve 5；Intermediate insulation cylinder 6 is oblate tubular (Fig. 4), and length intercepts with the requirement of style 2 16 spacing according to style 1；Being machined with reference electrode installing hole 17 in the middle part of insulating cylinder, as it is shown in figure 5, a height of 3mm of bottom shoulder hole, aperture is φ 5mm, can effectively ensure that the conduction of reference electrode 9 and electrolyte.
Fixture installation process: first left end cap 3 is placed on one end of four fastening bolts I 2；Left side is installed nut and is fixed, gasket seal I 1 is positioned over the groove at left end cap 3 edge, sample 1 is positioned in the through hole of cathode insulation sleeve 5, cathode insulation sleeve 5 edge is made to have one end of gasket seal I 1 steadily to contact with left end cap 3, the other end of cathode insulation sleeve 5 is close to intermediate insulation cylinder 6, and the two ends of contact are sealed by gasket seal I 1；In like manner anodized insulation sleeve 11 and right end cap 12 are installed, the nut at the two ends that then tight a bolt, the installation of major axes orientation can be completed.Metal electrode 4 is threadeded with yin, yang class B insulation sleeve, it is ensured that bottom and sample contacts reach conducting, and from metal electrode top extraction electrode wire 13；Reference electrode 9 is sealed by gasket seal II 10, it is fixed in the reference electrode installing hole 17 of intermediate insulation cylinder 6, first fastening bolt II 7 is installed and electrode fixed plate 8 is slightly fixed, tighten after extraction electrode wire 14 at reference electrode 9 top with fixed plate contact surface again, make wire 14 be in close contact with reference electrode 9 top.The screwed hole of reference electrode 9 fixed plate both sides, symmetrical (Fig. 6).
Finally by the conduction of circuit tester detection yin, yang electrode, outer pipeline just can be connected.Outer pipeline can use flow-type tank erosion corrosion test device, kinetic pump is placed in tank, it is connected with ventilating water pipe, by converter regulation flow velocity to meet experimental test requirement, flow velocity can be 0m/s～7m/s, and be monitored by effusion meter, after water flow stationary, connect and often organize galvanic couple to test sample；Pipeline can be sequentially connected with many sets specimen holder device (parallel sample), each device sample different passages by three electrode cable connecting multi-channel galvanic corrosion measuring instruments, test the current potential of each material, coupling potential and the numerical value of coupling electric current and carry out record, after test the most to be tested completes, take pictures, clean corrosion product and weigh.
Claims (2)
- null1. a fluid-guiding type dynamic galvanic corrosion test fixture device，Described grip device is cylindrical structure，It is characterized in that: include left end cap、Right end cap、Cathode insulation sleeve、Anodized insulation sleeve and intermediate insulation cylinder，Intermediate insulation cylinder is between cathode insulation sleeve and anodized insulation sleeve，Described left end cap and right end cap are insulant，One section of corrugated tubing it is respectively provided with in the outside of left end cap and right end cap，Described cathode insulation sleeve and anodized insulation sleeve are insulant，Sleeve inner installs tubulose sample，The left end of described cathode insulation sleeve is by gasket seal and fastening bolt and left end cap airtight connection，Its right-hand member is by described gasket seal and intermediate insulation cylinder airtight connection，The right-hand member of described anodized insulation sleeve is by described gasket seal and fastening bolt and right end cap airtight connection，Its left end is by described gasket seal and intermediate insulation cylinder airtight connection，Described cathode insulation sleeve and anodized insulation sleeve are respectively inlayed a metal electrode，The other end on metal electrode connects a wire.
- Fluid-guiding type dynamic galvanic corrosion test fixture device the most according to claim 1, it is characterized in that: on intermediate insulation cylinder, be machined with reference electrode installing hole, being provided with reference electrode on reference electrode installing hole, reference electrode is fixed on intermediate insulation cylinder by pad by two bolts and fixed plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620290962.XU CN205483964U (en) | 2016-04-07 | 2016-04-07 | Duct flow formula developments galvanic corrosion test fixture device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620290962.XU CN205483964U (en) | 2016-04-07 | 2016-04-07 | Duct flow formula developments galvanic corrosion test fixture device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205483964U true CN205483964U (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620290962.XU Expired - Fee Related CN205483964U (en) | 2016-04-07 | 2016-04-07 | Duct flow formula developments galvanic corrosion test fixture device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205483964U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525708A (en) * | 2016-12-06 | 2017-03-22 | 中国船舶重工集团公司第七二五研究所 | Chanel type dynamic medium electrochemical test apparatus and method |
| CN111141671A (en) * | 2020-01-21 | 2020-05-12 | 鞍钢股份有限公司 | Simulation test device and method for galvanic corrosion of composite steel bar coating and core material |
-
2016
- 2016-04-07 CN CN201620290962.XU patent/CN205483964U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525708A (en) * | 2016-12-06 | 2017-03-22 | 中国船舶重工集团公司第七二五研究所 | Chanel type dynamic medium electrochemical test apparatus and method |
| CN111141671A (en) * | 2020-01-21 | 2020-05-12 | 鞍钢股份有限公司 | Simulation test device and method for galvanic corrosion of composite steel bar coating and core material |
| CN111141671B (en) * | 2020-01-21 | 2022-11-18 | 鞍钢股份有限公司 | Simulation test device and method for galvanic corrosion of composite steel bar coating and core material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20170407 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |