CN203324153U - Device for testing local erosion corrosion of multiphase flow jet flow - Google Patents
Device for testing local erosion corrosion of multiphase flow jet flow Download PDFInfo
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- CN203324153U CN203324153U CN2013201665107U CN201320166510U CN203324153U CN 203324153 U CN203324153 U CN 203324153U CN 2013201665107 U CN2013201665107 U CN 2013201665107U CN 201320166510 U CN201320166510 U CN 201320166510U CN 203324153 U CN203324153 U CN 203324153U
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Abstract
The utility model relates to a device for testing local erosion corrosion of a multiphase flow jet flow. The device comprises a pulp pump, a slurry tank, a stirrer, a pressure gauge, an electromagnetic flowmeter, a jet flow eroded pipe section, a thermocouple and a low temperature constant temperature circulator, and is characterized in that the stirrer is arranged above the slurry tank; the thermocouple is arranged in the slurry tank and is connected with the low temperature constant temperature circulator; the bottom end of the slurry tank is connected to the pulp pump by a feed pipe; a ball valve is arranged on the feed pipe; a first stop valve is arranged on an outlet pipeline of the pulp pump and divides the outlet pipeline of the pulp pump into two paths; and one path returns to the slurry tank after passing through a second stop valve, and the other path returns to the slurry tank after passing through the pressure gauge, the electromagnetic flowmeter and the jet flow eroded pipe section. The device has the advantages of small volume, simple structure, low manufacturing cost and good operability.
Description
Technical field
The utility model belongs to the erosion corrosion studying technological domain, particularly, relates to a kind of polyphasic flow jet and washes away the local corrosion proving installation.
Background technology
Erosion corrosion is that the metal caused due to the high speed relative motion between metal surface and corrosive fluids damages phenomenon, is that material is washed away and corrodes synergistic result, is the local corrosion that a kind of harmfulness is larger.Erosion corrosion extensively is present in all types of industries process, the equipment in moving fluid of being exposed to is as flow passage components of pipeline, pipe fitting, pump etc., capital is subjected to the destruction of erosion corrosion in various degree, especially, containing in the two-phase flow or polyphasic flow of solid phase particles, destroys even more serious.The polyphasic flow erosion corrosion is a very complicated process, is subject to the many factors impacts such as solid phase particles factor in hydrodynamic factor, material factor, two-phase fluid, liquid phase aspect factor, and these factor weave ins, affect material erosion corrosion performance.
Sherardizing steel performance for research material, optimal mode is to carry out experimental study under condition at the scene, yet the site test economic drain is large and be not easy to operation, and the researchist often relies on the data message that the erosion corrosion test of carrying out on testing machine in laboratory obtains material for this reason.Erosion corrosion testing machine commonly used comprises rotating electrode type testing machine, jet washout test machine, pipe stream circulation testing machine, Coriolis erosion testing machine etc. at present, and all kinds of testing machines have the relative merits of oneself, are suitable for the research of specific operating mode.The current all kinds of testing machines for erosion corrosion research and research method are mainly paid close attention to and are probed into the mechanism of action of the single-factor variables such as flow parameter, medium, material on impact and the erosion corrosion of erosion corrosion from whole angle.And erosion corrosion is a kind of local corrosion, the electrochemical characteristic of metal material is uneven distribution in part, the electro-chemical test means of current testing machine and employing all can only be obtained the Electrochemistry Information of whole sample surfaces as potentiodynamic method, linear polarization, electrochemical AC impedance spectrum etc., what provide is the data of statistical average, can't be distinguished the electrochemical signals of erosion corrosion sample regional area, and then shown certain limitation in the research of washing away local corrosion.
The utility model content
In order to solve the problem of above-mentioned existence, the purpose of this utility model is to develop a kind of polyphasic flow jet and washes away the local corrosion proving installation.
The purpose of this utility model is achieved through the following technical solutions:
A kind of polyphasic flow jet washes away the local corrosion proving installation, comprises that ore slurry pump, slurry tank, stirrer, tensimeter, electromagnetic flowmeter, pipe stream wash away pipeline section, jet washes away pipeline section, thermopair, cryogenic thermostat circulator; It is characterized in that: stirrer is established in the slurry tank top, establishes thermopair in slurry tank, and thermopair is connected with the cryogenic thermostat circulator, and the slurry tank bottom is connected to ore slurry pump by feed pipe, establishes ball valve on feed pipe; The ore slurry pump export pipeline is established the first stop valve, and the ore slurry pump export pipeline is divided into two-way after by the first stop valve, and slurry tank is returned in a road after the second stop valve, and slurry tank is returned in another road after tensimeter, electromagnetic flowmeter, jet wash away pipeline section.
Preferably, jet washes away pipeline section, comprises shower nozzle, jet chamber, jet specimen mounting, blind nut, rubber sheet gasket, clamp nut, the axis quadrature of the axis of shower nozzle and jet chamber, an end of shower nozzle is provided with internal thread, and the other end of shower nozzle is provided with external thread, and the jet chamber sidewall is provided with internal thread, and shower nozzle is connected with device incoming flow pipeline by internal thread, and shower nozzle is threaded with the jet chamber sidewall, shower nozzle male end external diameter is certain, and nozzle openings internal diameter size is chosen according to the test demand, the gauge length nut matches with the shower nozzle male end, and shower nozzle male end end face has the shower nozzle fluting, and the shower nozzle fluting is communicated with outside by the passage in the shower nozzle wall, and shower nozzle fluting, passage are for installing auxiliary electrode, and the passage hole is partly filled in silicon rubber, the jet chamber is provided with jet contrast electrode mounting pipe mounting hole, the jet reference electrode tube comprises the jet porosint, jet contrast electrode mounting pipe, the jet contrast electrode, jet contrast electrode nut, jet contrast electrode mounting pipe is fixed on the sidewall of jet chamber by screw thread, the jet contrast electrode, the jet porosint is fixed in jet electrode mounting pipe, the jet contrast electrode is fixed by jet contrast electrode nut, and jet contrast electrode, form space between the jet porosint, the medial surface of the end face of jet porosint and jet chamber is on same cambered surface, the space filling KCl solution formed between jet porosint and jet contrast electrode, jet specimen mounting top is that thin axle, bottom are the electrode holder, the electrode holder of jet specimen mounting and jet specimen mounting bonnet are fastening by two rear cover screws, the electrode holder of jet specimen mounting and jet specimen mounting bonnet are formed with for the cavity of jet working electrode is installed, the jet working electrode is regulated by spring and the specimen mounting below stainless steel screw line position of fixedly going forward side by side, and the jet working electrode can be selected single overall electrode or the wire beam electrode by materials processing one-tenth to be tested, in the jet specimen mounting, have perforate to be connected with outside, the blind nut middle part has perforate, bottom is provided with external thread, and the jet specimen mounting passes the perforate of rubber sheet gasket, blind nut and is fastened on blind nut by clamp nut, adopt clearance fit between jet specimen mounting top and blind nut perforate, the blind nut bottom is fastening by external thread and jet chamber.
Preferably, auxiliary electrode is platinum filament.
Preferably, the thin axle outside surface in jet specimen mounting top axially is evenly distributed with four grooves, and on the plane that wherein two are positioned at the jet working electrode surface place after installation, two other is positioned on the plane vertical with aforementioned plane.
Advantage of the present utility model and good effect are:
Utilize the utility model to connect the experimental test that electrochemical apparatus is carried out, can wash away local corrosion to polyphasic flow in conjunction with the CFD numerical simulation and be furtherd investigate, have a volume little, simple in structure, cost of manufacture is low, the characteristics of good operability.
The accompanying drawing explanation
The structural representation that Fig. 1 is the utility model proving installation;
Fig. 2 is that the jet in Fig. 1 washes away the pipeline section schematic diagram;
Fig. 3 is jet specimen mounting in Fig. 4 and the structural representation of associated components;
The structural representation that Fig. 4 is jet reference electrode tube in Fig. 4;
Wherein: 1, ore slurry pump, 2, slurry tank, 3, the cryogenic thermostat circulator, 4, thermopair, 5, stirrer, 6, tensimeter, 7, electromagnetic flowmeter, 9, jet washes away pipeline section, 901, shower nozzle, 902, auxiliary electrode, 903, the shower nozzle fluting, 904, the jet reference electrode tube, 9041, the jet porosint, 9042, jet contrast electrode mounting pipe, 9043, the jet contrast electrode, 9044, jet contrast electrode nut, 905, jet contrast electrode mounting pipe mounting hole, 906, the gauge length nut, 907, clamp nut, 908, blind nut, 909, rubber sheet gasket, 910, the jet chamber, 911, the jet specimen mounting, 912, jet specimen mounting bonnet, 913, spring, 914, rear cover screw, 915, the jet working electrode, 916, jet working electrode lead-in wire, 917, stainless steel screw, 10, ball valve, 11, the first stop valve, 12, the second stop valve.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the polyphasic flow jet washes away the local corrosion proving installation, comprises that ore slurry pump 1, slurry tank 2, stirrer 5, tensimeter 6, electromagnetic flowmeter 7, pipe stream wash away pipeline section 8, jet washes away pipeline section 9, thermopair 4, cryogenic thermostat circulator 3; Slurry tank 2 is used medium for the splendid attire test, and stirrer 5 is established in slurry tank 2 tops, for the medium in slurry tank 2, is stirred; Establish thermopair 4 in slurry tank 2, thermopair 4 is connected with cryogenic thermostat circulator 3, the temperature of thermopair 4 monitoring slurry tank 2 interior media, the medium temperature in the duty of the Numerical Control that cryogenic thermostat circulator 3 records according to thermopair 4 self and then adjusting slurry tank 2; Slurry tank 2 bottoms are connected to ore slurry pump 1 by feed pipe, establish ball valve 10 on feed pipe; Before test starts, ball valve 10 is in closed condition, and the medium in 5 pairs of slurry tanks of stirrer 2 stirs in advance, opens ball valve 10 during beginning to be tested; Ore slurry pump 1 export pipeline is established the first stop valve 11, for regulating test pipeline medium flow, thereby flow velocity is regulated; Ore slurry pump 1 export pipeline is divided into two-way after by the first stop valve 11, and slurry tank 2 is returned in a road after the second stop valve 12, another road through tensimeter 6, electromagnetic flowmeter 7, pipe stream wash away pipeline section 8, jet returns to slurry tank after washing away pipeline section 9; The second stop valve is for the auxiliary adjustment of flow; Tensimeter 6 is for detection of the pressure in pipeline, and Electromagnetic Flow 7 shows flow and the flow velocity of pipeline medium in real time, and jet washes away pipeline section and washes away the sign of local corrosion for carrying out jet under different medium, different in flow rate, the different angle of attack.
As shown in Figure 2, jet washes away pipeline section 9, comprises shower nozzle 901, jet chamber 910, jet specimen mounting 911, blind nut 908, rubber sheet gasket 909, clamp nut 907; The axis quadrature of the axis of shower nozzle 901 and jet chamber 910, one end of shower nozzle 901 is provided with internal thread, the other end of shower nozzle 901 is provided with external thread, jet chamber 909 sidewalls are provided with internal thread, shower nozzle 901 is connected with device incoming flow pipeline by internal thread, and shower nozzle 901 is connected with jet chamber 909 sidewall thread; Shower nozzle 901 male end external diameters are certain, and shower nozzle 901 perforate internal diameter sizes are chosen according to the test demand; Gauge length nut 906 matches with shower nozzle 901 male end, gauge length nut 905 can be controlled the screw-in amount of shower nozzle 901, can control by the adjusting amount of screwing into the position relationship of shower nozzle 901 outlets and 915 of jet working electrodes, gauge length nut 905 plays the effect be connected between reinforcing shower nozzle 901 and jet chamber 910 simultaneously; Shower nozzle 901 male end end faces have shower nozzle fluting 903, and shower nozzle fluting 903 is communicated with outside by the passage in shower nozzle 901 walls, and shower nozzle fluting 903, passage are for installing auxiliary electrode 902, and auxiliary electrode is platinum filament, and the passage hole is partly filled in silicon rubber.Jet chamber 909 is provided with jet contrast electrode mounting pipe mounting hole 905, for jet reference electrode tube 904 is installed.As shown in Figure 6, jet reference electrode tube 904 comprises jet porosint 9041, jet contrast electrode mounting pipe 9042, jet contrast electrode 9043, jet contrast electrode nut 9044, jet contrast electrode mounting pipe 9042 is fixed on the sidewall of jet chamber 910 by screw thread, jet contrast electrode 9043, jet porosint 9041 is fixed in jet electrode mounting pipe, jet contrast electrode 9043 is fixing by jet contrast electrode nut 9044, and jet contrast electrode 9043, form space between jet porosint 9041, the medial surface of the end face of jet porosint 9041 and jet chamber is on same cambered surface, the space formed between jet porosint 9041 and the jet contrast electrode 9043 certain density KCl solution of annotating.Jet specimen mounting 911 tops are that thin axle, bottom are the electrode holder, the electrode holder of jet specimen mounting 911 and jet specimen mounting bonnet 912 are fastening by two rear cover screws 914, the electrode holder of jet specimen mounting 911 and jet specimen mounting bonnet 912 are formed with for the cavity of jet working electrode 915 is installed, jet working electrode 915 is regulated by spring 913 and specimen mounting below stainless steel screw 917 line position of fixedly going forward side by side, and the jet working electrode can be selected single overall electrode or the wire beam electrode by materials processing one-tenth to be tested.In jet specimen mounting 911, there is perforate to be connected with outside, be convenient to draw jet working electrode lead-in wire 916.Blind nut 908 middle parts have perforate, bottom is provided with external thread, and jet specimen mounting 911 passes the perforate of rubber sheet gasket 909, blind nut 908 and is fastened on blind nut 908 by clamp nut 907.Adopt clearance fit between jet specimen mounting 911 tops and blind nut 908 perforates, jet specimen mounting 911 can drive jet working electrode 915 and rotate freely around the blind nut axis, electrode surface and shower nozzle 901 is adjusted to after the angle needed to screw clamp nut 907 and get final product.Blind nut 908 bottoms are fastening by external thread and jet chamber 910.The jet specimen mounting 911 thin axle outside surfaces in top axially are evenly distributed with four grooves, on the plane that wherein two are positioned at the jet working electrode 915 surperficial places after installation, two other is positioned on the plane vertical with aforementioned plane, article four, groove is in conjunction with the angular dimension of blind nut 908 upper ends, but the angle between indicator electrode workplace and shower nozzle.
According to the test needs, after this device connects the electro-chemical test instrument, carry out jet and wash away the local corrosion test.Wire beam electrode is connected with the microelectrode array testing tool, can records corrosion potential, distribution of current under different medium, different in flow rate, the different angle of attack, thereby know and wash away the distribution situation of local corrosion parameter at electrode surface., can connect electrochemical workstation and carry out open circuit potential, electrochemical impedance spectroscopy test using the single wire electrode of wire beam electrode as working electrode simultaneously, contribute to the erosion corrosion mechanism that distributes local.The CFD numerical simulation study is synchronizeed and is carried out with test, build geometric model, fluid be set and boundary parameter carries out numerical evaluation with reference to test structure and fluid parameter, the information correspondences such as the current potential that result of calculation is tested with wire beam electrode, electric current, the corresponding relation between the scouring information such as research corrosion condition and flow velocity, boundary shear stress.
Claims (4)
1. a polyphasic flow jet washes away the local corrosion proving installation, comprises that ore slurry pump, slurry tank, stirrer, tensimeter, electromagnetic flowmeter, jet wash away pipeline section, thermopair, cryogenic thermostat circulator; It is characterized in that: stirrer is established in the slurry tank top, establishes thermopair in slurry tank, and thermopair is connected with the cryogenic thermostat circulator, and the slurry tank bottom is connected to ore slurry pump by feed pipe, establishes ball valve on feed pipe; The ore slurry pump export pipeline is established the first stop valve, and the ore slurry pump export pipeline is divided into two-way after by the first stop valve, and slurry tank is returned in a road after the second stop valve, and slurry tank is returned in another road after tensimeter, electromagnetic flowmeter, jet wash away pipeline section.
2. polyphasic flow jet according to claim 1 washes away the local corrosion proving installation, and it is characterized in that: jet washes away pipeline section, comprises shower nozzle, jet chamber, jet specimen mounting, blind nut, rubber sheet gasket, clamp nut, the axis quadrature of the axis of shower nozzle and jet chamber, an end of shower nozzle is provided with internal thread, and the other end of shower nozzle is provided with external thread, and the jet chamber sidewall is provided with internal thread, and shower nozzle is connected with device incoming flow pipeline by internal thread, and shower nozzle is threaded with the jet chamber sidewall, shower nozzle male end external diameter is certain, and nozzle openings internal diameter size is chosen according to the test demand, the gauge length nut matches with the shower nozzle male end, and shower nozzle male end end face has the shower nozzle fluting, and the shower nozzle fluting is communicated with outside by the passage in the shower nozzle wall, and shower nozzle fluting, passage are for installing auxiliary electrode, and the passage hole is partly filled in silicon rubber, the jet chamber is provided with jet contrast electrode mounting pipe mounting hole, the jet reference electrode tube comprises the jet porosint, jet contrast electrode mounting pipe, the jet contrast electrode, jet contrast electrode nut, jet contrast electrode mounting pipe is fixed on the sidewall of jet chamber by screw thread, the jet contrast electrode, the jet porosint is fixed in jet electrode mounting pipe, the jet contrast electrode is fixed by jet contrast electrode nut, and jet contrast electrode, form space between the jet porosint, the medial surface of the end face of jet porosint and jet chamber is on same cambered surface, jet specimen mounting top is that thin axle, bottom are the electrode holder, the electrode holder of jet specimen mounting and jet specimen mounting bonnet are fastening by two rear cover screws, the electrode holder of jet specimen mounting and jet specimen mounting bonnet are formed with for the cavity of jet working electrode is installed, the jet working electrode is regulated by spring and the specimen mounting below stainless steel screw line position of fixedly going forward side by side, and the jet working electrode can be selected single overall electrode or the wire beam electrode by materials processing one-tenth to be tested, in the jet specimen mounting, have perforate to be connected with outside, the blind nut middle part has perforate, bottom is provided with external thread, and the jet specimen mounting passes the perforate of rubber sheet gasket, blind nut and is fastened on blind nut by clamp nut, adopt clearance fit between jet specimen mounting top and blind nut perforate, the blind nut bottom is fastening by external thread and jet chamber.
3. polyphasic flow jet according to claim 2 washes away the local corrosion proving installation, it is characterized in that: the thin axle outside surface in jet specimen mounting top axially is evenly distributed with four grooves, on the plane that wherein two are positioned at the jet working electrode surface place after installation, two other is positioned on the plane vertical with aforementioned plane.
4. wash away the local corrosion proving installation according to the described polyphasic flow jet of claim 2 or 3, it is characterized in that: auxiliary electrode is platinum filament.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201665107U CN203324153U (en) | 2013-04-03 | 2013-04-03 | Device for testing local erosion corrosion of multiphase flow jet flow |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201665107U CN203324153U (en) | 2013-04-03 | 2013-04-03 | Device for testing local erosion corrosion of multiphase flow jet flow |
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| CN203324153U true CN203324153U (en) | 2013-12-04 |
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| CN2013201665107U Expired - Fee Related CN203324153U (en) | 2013-04-03 | 2013-04-03 | Device for testing local erosion corrosion of multiphase flow jet flow |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107957393A (en) * | 2017-12-20 | 2018-04-24 | 西安建筑科技大学 | A kind of multiphase flow tube stream-jet erosion experimental rig and test method |
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2013
- 2013-04-03 CN CN2013201665107U patent/CN203324153U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107957393A (en) * | 2017-12-20 | 2018-04-24 | 西安建筑科技大学 | A kind of multiphase flow tube stream-jet erosion experimental rig and test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20140403 |