CN2457597Y - Pipe flow type liquid/solid double phase flow flushing corrosion test device - Google Patents
Pipe flow type liquid/solid double phase flow flushing corrosion test device Download PDFInfo
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- CN2457597Y CN2457597Y CN 00253528 CN00253528U CN2457597Y CN 2457597 Y CN2457597 Y CN 2457597Y CN 00253528 CN00253528 CN 00253528 CN 00253528 U CN00253528 U CN 00253528U CN 2457597 Y CN2457597 Y CN 2457597Y
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- 239000007788 liquid Substances 0.000 title claims abstract description 25
- 238000005260 corrosion Methods 0.000 title claims abstract description 23
- 230000007797 corrosion Effects 0.000 title claims abstract description 23
- 239000007787 solid Substances 0.000 title claims abstract description 10
- 238000012360 testing method Methods 0.000 title abstract description 4
- 238000011010 flushing procedure Methods 0.000 title abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000000840 electrochemical analysis Methods 0.000 claims abstract description 9
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000002474 experimental method Methods 0.000 claims description 12
- 238000009991 scouring Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 5
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 9
- 230000003628 erosive effect Effects 0.000 description 12
- 238000011160 research Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 229920002313 fluoropolymer Polymers 0.000 description 2
- 101100202502 Caenorhabditis elegans scd-2 gene Proteins 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000001458 anti-acid effect Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
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Abstract
The utility model relates to a pipe flow type liquid/solid double phase flow flushing corrosion test device. The lower side of a liquid storing tank of a built-in refrigerating device is connected with a liquid feeding pump through a pipeline; the connecting position is provided with a liquid discharging valve; the other end of the liquid feeding pump is divided into two branches; one branch is connected with the liquid storing tank, and the other branch is connected with a sample segment; the other end of the sample segment is also divided into two branches respectively connected with the liquid storing tank; a water storing tank for cleaning is connected with a water feeding pump, an electromagnetic valve and a liquid storing tank pipeline in turn; the sample segment is connected with an electrochemical test device; the light output to the electrochemical test device by a laser speedometer and the sample segment crosses the position relation of the liquid passing through the sample segment. The utility model can measure the distribution of the local flow rate and flow state of the fluid under the high flow rate condition.
Description
The utility model relates to the research of erosion corrosion, specifically a kind of fluid-guiding type liquid-solid double-phase scouring corrosion experiment apparatus.
Pipe flushing corrosion is of common occurrence in engineering reality, and pipe flow experiment is a kind of experimental technique of simulating the conduit component working condition preferably, and its experimental result has very high practical value.The fluid-guiding type device is convenient to control the flow rate of fluid fluidised form, good fluid mechanic model is arranged, in conjunction with hydrodynamic parameters such as Reynolds number, shear stress etc., can set forth the erosion corrosion mechanism of material well, the conventional erosion corrosion rule of pipe stream device energy research material under certain flow rate, the expense height can not be studied near the influence of the motion feature of the particle distribution of fluid in-situ velocity fluidised form and the tube wall to material erosion corrosion rule.In engineering reality, local flow-disturbing such as unexpected expansion, sudden contraction, boss, groove, bend pipes etc. often are the most serious positions of erosion corrosion, erosion corrosion under the flow-disturbing condition should become the emphasis of research undoubtedly, under the flow-disturbing condition, the mean flow rate of above-mentioned reflection macro property can't characterize local fluid mechanics condition, reflection is local, obtaining of the especially near wall place of the instantaneous flow rate of microcosmic fluidised form has calculating usually and measures two kinds of methods, wherein measuring method is mainly used noncontact modes such as optics at present, comprise laser Dppler veloicty measurement (LDV or LDA, Laser-Doppler-Velocimeter or Anemometry) and particle image velocity measuring technique (PIV, Particle Image Veklocimetry).PIV just grew up in recent years, and had obtained develop rapidly at nearly 1～2 year, was developing direction in the future, but still had many problems to exist.LDV be find laser doppler from Yeh and Cummins1964 since, through the development in twenty or thirty year with improve, in fluid mechanics research, be used widely, the LDV technology is applied to the research of erosion corrosion, also only German at present Heitz one family, they had once set up a cover fluid-guiding type equipment, and utilization LDV has tested the flow pattern mutable site, Gu the velocity flow pattern of single phase liquid flow and liquid/two-phase flow, based on low speed (＜0.884m/s) measurement result, propose the importance of the velocity disturbance degree of vertical tube wall, but lacked the test result under the conditions of high flow rate.
The purpose of this utility model provide a kind of can be under conditions of high flow rate, the distribution of research (measurements) fluid in-situ velocity fluidised form and near the motion feature of the particle of tube wall are to the fluid-guiding type liquid-solid double-phase scouring corrosion experiment apparatus of the influence of material erosion corrosion rule.
The purpose of this utility model is achieved in that reaching the laser velocimeter that cooperates with light path device, signal processor and data processor by hopper, hopper, the pump that has frequency converter, sample section, electro-chemical test device forms, wherein:
The hopper of built-in cooling device below is connected with solution feed pump by pipeline, establishes a tapping valve in its junction, and the solution feed pump other end divides two branch roads, and to hopper, another branch road is to the sample section through standby people's wage adjustment flow valve for branch road; Divide two-way again at the sample section other end, wherein one the tunnel use solenoid valve, flowmeter to hopper through exitting successively, to hopper, wherein solenoid valve and flowmeter both sides are established a water valve respectively through water valve on another road;
Described cleaning is connected with solenoid valve, the hopper pipeline that the loading hopper pipeline links to each other with make-up pump successively with hopper, the sample section is electrically connected with the electro-chemical test device, and the light of described laser velocimeter and sample Duan Weiqi output crosses the position relation by the liquid of sample section;
Sample in the described sample section is designed to unexpected expansion type, and before expanding suddenly, the sample section is provided with the smooth section of an abundance; Sectional type arranges that promptly sample is a plurality of rings that insulate to each other; In the pipeline below the sample section, plug a heating jacket that links to each other with temperature controller; Described hopper is provided with a tensimeter and two solenoid valves, and one of them uses solenoid valve for pressurization, and another uses solenoid valve for discharging water.
The utlity model has following advantage:
The utility model can be studied near the motion feature of the particle distribution of fluid in-situ velocity fluidised form and the tube wall under conditions of high flow rate, can effectively simulate the erosion corrosion behavior under the flow-disturbing condition, and can provide two-dimentional velocity field under the flow-disturbing condition and other kinetic parameter, thereby can further investigate of the influence of fluid mechanics factor to erosion corrosion.In addition, this device can be realized dynamic electrochemical measurement, thereby is convenient to study erosion corrosion mechanism, and its temperature also can be controlled preferably; Stepless speed regulation has guaranteed the good control of flow velocity and the safe operation of each flow passage components; Further, the utility model is furnished with the qi of chong channel ascending adversely pressue device, can prevent the generation of steam bubble in the experimentation, is convenient to eliminate the influence of cavitation erosion, and experimental result proves that this device is stable, and the gained experimental result is reliable.
Fig. 1 is the utility model structural representation.
Be described in further detail below in conjunction with the course of work of accompanying drawing the utility model structure.As shown in Figure 1, reach the laser velocimeter that cooperates with light path device 9, signal processor and data processor by hopper 1, hopper 4, the pump 5 that has frequency converter, sample section 8, electro-chemical test device and form, wherein:
Hopper 1 below of built-in cooling device 2 is connected with solution feed pump 5 by pipeline, establishes a tapping valve 3 in its junction, and solution feed pump 5 other ends divide two branch roads, and to hopper 1, another branch road is to sample section 8 through standby people's wage adjustment flow valve for branch road; Divide two-way again at sample section 8 other ends, wherein one the tunnel use solenoid valve, flowmeter 10 to hopper 1 through exitting successively, to hopper 1, wherein solenoid valve and flowmeter 10 both sides are established a water valve respectively through water valve on another road; Described cleaning is connected with solenoid valve, hopper 1 pipeline that the loading hopper pipeline links to each other with make-up pump 6 successively with hopper 1, sample section 8 is electrically connected with the electro-chemical test device, and described laser velocimeter and sample section 8 are crossed the position relation of the liquid by sample section 8 for the light of its output;
Sample in the described sample section 8 is designed to unexpected expansion type, and before expanding suddenly, sample section 8 is provided with the smooth section 12 of an abundance; Sectional type arranges that promptly sample is a plurality of rings 13 that insulate to each other; In the pipeline below the sample section 8, plug a heating jacket that links to each other with temperature controller 7;
Described hopper 1 is provided with a tensimeter 11 and two solenoid valves, and one of them uses solenoid valve for pressurization, and another uses solenoid valve for discharging water.
The employing of the utility model pipeline is withstand voltage, antiacid, the borosilicate glass tube of caustic corrosion performance, and described laser velocimeter adopts SCD-2 type two-dimensional laser Doppler range rate measurement; Described cooling device 7 is a coil arrangement, reaches cooling effect by the heat interchange between tap water and medium;
Consider the media environment that the experiment condition of intending carrying out is low sand cut mostly, corrosivity is stronger, therefore, described pump adopts the fluoroplastic pump of the lining teflon that corrosion stability is fabulous, wearing quality is a bit weaker, in addition, the teflon temperature tolerance is also fine, and this is a main cause of finally selecting the fluoroplastic pump for use.
Electro-chemical test adopts dual mode, and the one, adopt sandwiched type structure, three rings adjacent one another are are as three-electrode system, and the research electrode is in the centre, and upper and lower two rings are made reference and auxiliary electrode respectively; Another kind is the design that Postlethwaite adopts, and studies show that, the second way is more near the conventional electrolysis pond, but first kind of mode more easily carried out the weightless test under the externally-applied potential condition.
Consider that conventional granulates such as silica sand, emergy density are a lot of greatly than water, the utility model adds sand grains again after liquid stream adds circulation line and gets into smooth; The utility model is provided with two electromagnetic release valves at higher position, position, two places, tries one's best the gas emptying when being intended to topping up or in the solution cyclic process.
The main operating process of the utility model is as follows:
With solution feed pump 5 liquid in the hopper 1 is extracted out, delivered to sample section 8, regulate flow velocity with frequency converter, beat liquid in the sample section 8 with the light of laser velocimeter,, be in the light principle reflective according to particle in the liquid measured flow velocity; Simultaneously, by flowmeter 10 (closing another branch road manual water valve),, measure the valve of closing the flowmeter branch road behind the flow velocity, open another branch road manual water valve, liquid is sent into hopper 1 to hopper 1 from the liquid of sample section 8.In addition, can auxiliary adjustment feed flow flow from solution feed pump 5 through artificial liquid adjusting valve, common people worker's liquid adjusting valve is as standby; Water in the hopper 4 is used for cleaning, and extracts out through make-up pump 6 when needing, and delivers to hopper 1.
Hopper 4 also can be used for for other liquid storage.
The laser velocimeter that described light path device 9, signal processor and data processor cooperate is a prior art.
Claims (4)
1. fluid-guiding type liquid-solid double-phase scouring corrosion experiment apparatus, it is characterized in that reaching the laser velocimeter that cooperates with light path device (9), signal processor and data processor by hopper (1), hopper (4), the pump (5) that has frequency converter, sample section (8), electro-chemical test device forms, wherein:
Hopper (1) below of built-in cooling device (2) is connected with solution feed pump (5) by pipeline, establish a tapping valve (3) in its junction, solution feed pump (5) other end divides two branch roads, and to hopper (1), another branch road is to sample section (8) through standby people's wage adjustment flow valve for branch road; Divide two-way again at sample section (8) other end, wherein one the tunnel use solenoid valve, flowmeter (10) to hopper (1) through exitting successively, to hopper (1), wherein solenoid valve and flowmeter (10) both sides are established a water valve respectively through water valve on another road;
Described cleaning is connected with solenoid valve, hopper (1) pipeline that the loading hopper pipeline links to each other with make-up pump (6) successively with hopper (1), sample section (8) is electrically connected with the electro-chemical test device, and described laser velocimeter and sample section (8) are crossed the position relation of the liquid by sample section (8) for the light of its output.
2. according to the described fluid-guiding type liquid-solid double-phase scouring corrosion experiment apparatus of claim 1, it is characterized in that: the sample in the described sample section (8) is designed to unexpected expansion type, and before expanding suddenly, sample section (8) is provided with the smooth section (12) of an abundance; Sectional type arranges that promptly sample is a plurality of rings (13) that insulate to each other.
3. according to the described fluid-guiding type liquid-solid double-phase scouring corrosion experiment apparatus of claim 1, it is characterized in that: in the pipeline of sample section (8) below, plug a heating jacket that links to each other with temperature controller (7).
4. according to the described fluid-guiding type liquid-solid double-phase scouring corrosion experiment apparatus of claim 1, it is characterized in that: described hopper (1) is provided with a tensimeter (11) and two solenoid valves, and one of them uses solenoid valve for pressurization, and another uses solenoid valve for discharging water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00253528 CN2457597Y (en) | 2000-12-21 | 2000-12-21 | Pipe flow type liquid/solid double phase flow flushing corrosion test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00253528 CN2457597Y (en) | 2000-12-21 | 2000-12-21 | Pipe flow type liquid/solid double phase flow flushing corrosion test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2457597Y true CN2457597Y (en) | 2001-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00253528 Expired - Fee Related CN2457597Y (en) | 2000-12-21 | 2000-12-21 | Pipe flow type liquid/solid double phase flow flushing corrosion test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2457597Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101923042A (en) * | 2010-07-08 | 2010-12-22 | 中国船舶重工集团公司第七二五研究所 | Test method for simulating couple corrosion in seawater scouring environment |
| CN101413860B (en) * | 2008-11-21 | 2011-01-19 | 北京科技大学 | High-temperature high-flow rate erosion experiment device |
| CN101975744A (en) * | 2010-09-14 | 2011-02-16 | 苏州有色金属研究院有限公司 | Erosion corrosion test device of seawater piping system metal member |
| CN103234894A (en) * | 2013-04-03 | 2013-08-07 | 中国石油大学(华东) | Multiphase flow erosion local corrosion testing apparatus |
| CN105403478A (en) * | 2015-12-03 | 2016-03-16 | 东方电气集团东方汽轮机有限公司 | Solid-liquid-containing multi-phase flow washout test system and test method |
| CN108827871A (en) * | 2018-08-17 | 2018-11-16 | 河海大学 | Silt surface shearing stress determines method in a kind of tubular type soil erosion experimental rig |
-
2000
- 2000-12-21 CN CN 00253528 patent/CN2457597Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413860B (en) * | 2008-11-21 | 2011-01-19 | 北京科技大学 | High-temperature high-flow rate erosion experiment device |
| CN101923042A (en) * | 2010-07-08 | 2010-12-22 | 中国船舶重工集团公司第七二五研究所 | Test method for simulating couple corrosion in seawater scouring environment |
| CN101923042B (en) * | 2010-07-08 | 2012-09-05 | 中国船舶重工集团公司第七二五研究所 | Test method for simulating couple corrosion in seawater scouring environment |
| CN101975744A (en) * | 2010-09-14 | 2011-02-16 | 苏州有色金属研究院有限公司 | Erosion corrosion test device of seawater piping system metal member |
| CN103234894A (en) * | 2013-04-03 | 2013-08-07 | 中国石油大学(华东) | Multiphase flow erosion local corrosion testing apparatus |
| CN103234894B (en) * | 2013-04-03 | 2015-01-21 | 中国石油大学(华东) | Multiphase flow erosion local corrosion testing apparatus |
| CN105403478A (en) * | 2015-12-03 | 2016-03-16 | 东方电气集团东方汽轮机有限公司 | Solid-liquid-containing multi-phase flow washout test system and test method |
| CN108827871A (en) * | 2018-08-17 | 2018-11-16 | 河海大学 | Silt surface shearing stress determines method in a kind of tubular type soil erosion experimental rig |
| CN108827871B (en) * | 2018-08-17 | 2020-11-10 | 河海大学 | Method for determining shear stress of sediment surface in tubular sediment erosion test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |