CN105403478A - Solid-liquid-containing multi-phase flow washout test system and test method - Google Patents
Solid-liquid-containing multi-phase flow washout test system and test method Download PDFInfo
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- CN105403478A CN105403478A CN201510876948.8A CN201510876948A CN105403478A CN 105403478 A CN105403478 A CN 105403478A CN 201510876948 A CN201510876948 A CN 201510876948A CN 105403478 A CN105403478 A CN 105403478A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals
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Abstract
The invention discloses a solid-liquid-containing multi-phase flow washout test system. The washout test system comprises a container, a fluid path, a brake, at least one connector and a speed-regulation and measurement unit, wherein the container is used for containing a solid-liquid-containing multi-phase flow fluid medium, the fluid path is communicated with the container, the brake is used for controlling the flow and flow velocity of the fluid medium from the container to the fluid path, the connectors are located on the fluid path and used for being connected to at least one sample tube, provided by the test system, of the fluid medium, and the speed-regulation and measurement unit is used for adjusting the flow velocity of the fluid medium passing through the sample tubes through the fluid path and measuring the flow velocity. The washout test system can simulate practical washout working conditions of a pipeline. The invention further discloses a method for conducting washout tests by means of the solid-liquid-containing multi-phase flow washout test system.
Description
Technical field
The present invention relates to multiphase flow erosion experimental technique, be specifically related to the washout test system of the polyphasic flow containing solid-liquid and utilize this system to carry out the method tested.
Background technology
Two classes can be divided into: single-phase flow, polyphasic flow to the erosion test study general of pipe interior fluid.Single-phase flow wash-out is that the single-phase corrosive fluids flowed by pipe interior causes, and carries out comparatively early to its research, and comparatively multi-phase flow erosion research is simple.Multi-phase flow erosion relates to vapour, liquid, the wherein at least proportioning of two-phase complex dielectrics and the composition such as solid, and its process is more complicated, also common in the industry, the closest with engineering actual association, but research work is still not deep enough.
Such as, engineering produces the actual Cooling Tubes of Condenser related to, its material should be selected according to dissimilar, the different brackets of water quality, also needs to consider the many factors such as the corrosion stability of material and economic feasibility simultaneously, thus provides abundant guarantee for the safety of condenser, economical operation.Cooling tube is the most important part of condenser, and in weight, it accounts for 1/8 ~ 1/4 of whole condenser, and cost accounts for 1/4 ~ 1/2.Safe reliability and the economy of condenser depend on cooling tube to a great extent.Correctly selecting the material of cooling tube, its quality of rational evaluation, is the most important prerequisite ensureing condenser safety, the most basic measure, because of but the link of Condenser Design most critical.
The central issue of cooling tube selection is the decay resistance of tubing.The decay resistance of different metal material, had both depended on the characteristic of material itself, had also depended on the external conditions such as cooling water quality, as the kind, concentration, temperature, sand cut, flow velocity etc. of medium.Therefore, cooling water quality is the basic foundation of Tube Material Selection For Cooling Tubes In Condenser.Under given cooling water quality condition, having the decay resistance that appropriateness is excellent, is the main target that cooling tube selection is pursued.According to China power industry standard DL712 " fuel-burning power plant condenser tube selection directive/guide " regulation, there is not heavy corrosion and the leakage of tubing in cooling tube, serviceable life should more than 20 years.For Nuclear Power Station Condensers cooling tube, serviceable life should more than 30 years.So after correct selected cooling tube description of materials trade mark specification, work out the rational technical conditions of tubing, strict inspection procedure, the quality acceptance standard of science, be also very important, these all belong to the scope of cooling tube selection.
Suspension in chilled water and sand cut are the key factor of cooling tube corrosion failure really, should as the important evidence of cooling tube selection.When analyzing suspension and sand cut in chilled water to the affecting of selection, except its content of consideration, should also be noted that its particle diameter and shape facility.The flow velocity of cooling tube inner cooling water has a significant impact condenser heat transfer property, and the height of this flow velocity is also the key factor determining cooling tubing decay resistance.Cooling tube inner cooling water flow velocity often with cooling water quality side by side as the foundation of cooling tube selection.The phenomenon that accelerates the failure that material produces under the synergy of abrasion and corrosion double factor, i.e. erosion corrosion.During because of solid suspension containing sandstone and so in corrosive medium, inner surface of tube is also subject to abrasive action while being corroded, i.e. the erosion corrosion of solid particle.
At present, to pipe corrosion aspect only based on the consideration of the static immersing corrosion test of material, electrochemical corrosion test, pitting test result, in conjunction with actual condition, carry out simulated scouring experiment, data when flowing i.e. solid phase stream mutually containing solid particle especially in media as well do not have substantially, particularly, such as cooling tube should do the long-time tubing tested by the need more than 20 years this kind of serviceable life.
For this reason, expect to seek a kind of technical scheme, at least to alleviate the problems referred to above.
Summary of the invention
On the one hand, the technical problem to be solved in the present invention is, provides a kind of and can simulate the actual washout test system of washing away the polyphasic flow containing solid-liquid of operating mode of pipeline.
On the other hand, the technical problem to be solved in the present invention is, provides a kind of method utilizing the pilot system provided on the one hand to carry out washout test.
For solving problem on the one hand, the present invention proposes following technical scheme.
Containing a washout test system for the polyphasic flow of solid-liquid, comprising:
Container, for the fluid media (medium) of splendid attire containing the polyphasic flow of solid-liquid;
Fluid path, is communicated to described container;
Detent, for controlling described fluid media (medium) from described container to the flowing of described fluid path and flowing velocity;
At least one connector, it is positioned at described fluid path, and this connector is provided at least one sample pipe of described fluid media (medium) by described pilot system for being connected to; And
Speed governing measuring unit, the speed flowed for regulating the described fluid media (medium) flowing through described sample pipe through described fluid path also measures this speed.
Described speed governing measuring unit comprise be one another in series flowmeter, the first valve and and described flowmeter, the first valve parallel connection the second valve.
Also comprise:
Heating unit, for heating the described fluid media (medium) in described pilot system;
Temperature sensor, is positioned at described fluid path place, for measuring the temperature of fluid media (medium) described in described fluid path; And
Control module, be connected to described heating unit and described temperature sensor, for by the temperature measured by described temperature sensor be used for representing that the information setting test temperature compares, and control when the temperature measured by described temperature sensor is equal to or greater than described setting test temperature described heating unit stop heating.
Also comprise: stirrer, for stirring the described fluid media (medium) in described container.
Also comprise the bypass fluid path of the extraction of the outlet from described detent being serially connected with bypass valve.
Described fluid path is communicated with described container closed loop.
Described detent is water pump.
Described first valve is stop valve, and described second valve is the valve of adjustable aperture;
Described sample pipe is the straight length directly intercepted from product to be checked.
For solving problem on the other hand, the present invention proposes following technical scheme.
Utilize the washout test system of the polyphasic flow containing solid-liquid of said structure to carry out a method for washout test, it comprises the steps:
The fluid media (medium) of the polyphasic flow containing solid-liquid configured by test given requirements is placed in container;
Described sample pipe is connected with connector;
Close the second valve and detent, and the fluid media (medium) in container is stirred;
Open detent, the first valve, regulate the second valve, after reaching the required flow of test, close the first valve;
After reaching setting test period, close the second valve and detent;
Take off described sample pipe, and it is weighed, surface topography observation, Comprehensive Assessment.
The present invention has following Advantageous Effects.
The present invention by by test given requirements fluid medium, and coordinates detent rationally to recruit fluid media (medium) flow velocity according to different tests scheme by speed governing measuring unit, realizes simulation pipeline and washes away operating mode as straight length is actual.After having tested, by reduction or the specimen surface morphology analysis of sample pipe weight, to exemplar as pipe carries out Comprehensive Assessment.It is to the evaluation of inner-walls of duct science more.
The present invention can analyze in liquid phase stream (as water) containing the impact of the content of solid phase particles (as sand) on the selection of pipeline and different batches quality, solid phase particles particle diameter and shape facility can also be taken into account, simultaneously the flow velocity of fluid medium and temperature can control.Such as, can realize copper pipe, austenitic stainless steel steel pipe, two phase stainless steel steel pipe and the selection of titanium pipe and the evaluation of quality.
Accompanying drawing explanation
Fig. 1 schematically shows a kind of embodiment of the present invention.
Fig. 2 schematically shows another kind of embodiment of the present invention.
Fig. 3 schematically shows a kind of embodiment of sample pipe of the present invention parallel connection.
Fig. 4 schematically shows a kind of embodiment of sample chamber parallel connection of the present invention.
Embodiment
For can technical characteristic of the present invention and effect be described in detail, and can realize according to the content of this instructions, below in conjunction with accompanying drawing, embodiments of the present invention be further illustrated.
Fig. 1 illustrates the embodiment of the washout test system of a kind of polyphasic flow containing solid-liquid in numerous embodiment of the present invention.Container 1, detent 2, fluid path 3, connector 31 and speed governing measuring unit 4 should be comprised containing the washout test system of the polyphasic flow of solid-liquid.From container 1 to connector 31, tandem brake 2, speed governing measuring unit 4 successively on fluid path 3.
Container 1 can adopt but be not limited to rectangular structure, and top can have opening.Container 1 is for the fluid media (medium) of splendid attire containing the polyphasic flow of solid-liquid.This fluid media (medium) can by the configuration of test given requirements, and the fluid working substance under simulation sample pipe A actual condition, also can adopt the fluid working substance under sample pipe A actual condition.
Fluid path 3 is communicated to container 1.Such as, fluid path 3 is connected by pipeline and is formed.The end of fluid path 3 forms escape orifice 32.
In the embodiment that Fig. 1 presents, detent 2 adopts water pump.Detent 2 is for control flow check body medium from the flowing of container 1 to fluid path 3 and flowing velocity, and fluid media (medium) is finally from escape orifice 32 effluent fluid path 3.
Connector 31 is positioned at fluid path 3, and connector 31 is provided at least one sample pipe A of fluid media (medium) by pilot system of the present invention for being connected to.One end interface of connector 31 is communicated with speed governing measuring unit 4, and its other end interface is communicated with escape orifice 32, and the quantity of its each end interface is one or more.
If when connector 31 is connected with multiple sample pipe A, the plurality of sample pipe A is in series better.The multiple sample pipe A being connected to connector 31 can be identical samples, and to increase sample size, data can be added up, and this is desired by engineering Application Research; Also can be different samples, data have comparability; Can be the combination of multiple same sample and multiple various sample in addition.
Be appreciated that above-mentioned multiple sample pipe A can also be connected in parallel in connector 31, property presents the structure of two sample pipe A1, A2 parallel connections as schematically shown in Figure 3, or connection in series-parallel array mode is connected to connector 31.
Connector 31 also can be multiple, and concrete quantity requires to determine according to actual tests.
Sample pipe A can be but be not limited to the straight length of directly intercepting from product to be checked.
Speed governing measuring unit 4 for regulate through fluid path 3 flow through sample pipe A fluid media (medium) flowing speed and measure this speed.
In many situations, be model engineering actual conditions, the ordinary test time is all very long, and as 200h-1000h, in the fluid path, in this case, flowmeter easily damages in usual flowmeter series connection, causes test to have to stop.For this reason, the present invention schematically proposes a kind of embodiment of speed governing measuring unit 4, and this speed governing measuring unit 4 comprises flowmeter 42, first valve 41 that is one another in series and and the second valve 43 of flowmeter 42, first valve 41 parallel connection.Being separated by flowmeter of this kind of speed governing measuring unit 4, only open this flowmeter 42 when needs detect flow by the first valve 41, to avoid, flowmeter series connection is as easy as rolling off a log in the fluid path causes it to damage and the problem of termination test, and then saves experimentation cost.
In certain embodiments, the first valve 41 is stop valve, and the second valve 43 is that the valve of adjustable aperture is better, such as butterfly valve.
In certain embodiments, pilot system of the present invention also comprises heating unit 6, temperature sensor (not shown) and control module 5, and during to realize testing, the temperature of fluid medium carries out regulating, controlling.
The fluid media (medium) that heating unit 6 is placed in container 1, for the intrasystem fluid media (medium) of heat test, such as, heats by heating unit 6.
Temperature sensor is positioned at fluid path 3 place, for measuring the temperature of fluid media (medium) in fluid path 3.
Control module 5 is connected to heating unit 6 and temperature sensor, for by the temperature measured by temperature sensor be used for representing that the information setting test temperature compares, and when the temperature measured by temperature sensor be equal to or greater than setting test temperature control heating unit 5 stop heating.Or control module 5 controls heating unit 5 heated fluid medium when the temperature measured by temperature sensor is less than setting test temperature.
In certain embodiments, pilot system of the present invention also comprises stirrer 8.Stirrer 8 under the driving of drive motor for the fluid media (medium) in stirred vessel 1, to make containing solid phase stream (as sand grains) and liquid phase stream (as water) Homogeneous phase mixing.
In certain embodiments, pilot system of the present invention also comprises the bypass fluid path 7 of the extraction of the outlet from detent 2 being serially connected with bypass valve 71.
In certain embodiments, fluid path 3 is communicated with container 1 closed loop, and to realize cyclic test, the outlet 72 in bypass fluid path 7 is communicated with better with container 1.
Fig. 2 schematically shows another kind of embodiment of the present invention.The embodiment difference that the present embodiment and Fig. 1 present is, the present embodiment is provided with sample chamber 9, sample chamber 9 is communicated with respectively with two interfaces of connector 31, during test, sample pipe A is filled in sample chamber 9 and the port making its two ends respectively with the two ends orifice of connector 31.
The sample pipe A filling in sample chamber 9 can be multiple, and it is one another in series.
Sample chamber 9 also can be multiple, and they can be connected and/or be connected to connector 31 after parallel connection, and property presents the structure of two sample chambers 91,92 parallel connection as schematically shown in Figure 4.
But, connector 31 also only can provide at least one interface in one end, during construction, by the port of one end of sample pipe A and the orifice of this connector 31, the port of the other end of sample pipe A forms escape orifice 32 of the present invention, under this structure, can think, when not connecting sample pipe A, connector 31, escape orifice 32 are formed at fluid path 3 same position, and after connecting sample pipe A, the length being equivalent to convection cell path 3 increases, escape orifice 32 position there occurs change, and then forms new escape orifice on sample pipe A.
Said sample pipe A is connected with adopting the such as removably such as flange, socket joint between connector 31, but does not get rid of sample pipe A and be connected, as being welded to connect with adopting other modes between connector 31.
According to the opposing party, the present invention proposes a kind of method utilizing the washout test system of the polyphasic flow containing solid-liquid of said structure to carry out washout test, and it comprises the steps:
The fluid media (medium) of the polyphasic flow containing solid-liquid configured by test given requirements is placed in container 1;
Sample pipe A is connected with connector 31;
Close the first valve 41, second valve 43 and detent 2, and the fluid media (medium) in container 1 is stirred;
Open detent 2, first valve 41, regulate the second valve 43, after reaching the required flow of test, close the first valve 41;
After reaching setting test period, close detent 2 and the second valve 43;
Take off sample pipe A, and it is weighed, surface topography observation, Comprehensive Assessment.
With more specifically embodiment, pilot system of the present invention and method are described in further detail below.
Embodiment one: for copper pipe and stainless steel cooling pipe selection, the experimental procedure of being undertaken by pilot system of the present invention is as follows:
(1) configure simulated seawater solution, add NaCl, KCl, MgCl2 etc., make solution chlorinity reach 15 ‰, with 0.1mol/LNaOH solution adjustment PH to 8.0; Add silicon carbide abrasive, the particle diameter of abrasive material and content are respectively 0.01mm and 0.2 ‰; Sea water solution good for aforementioned arrangements is loaded container 1.
(2) be that the copper pipe of 50mm and stainless-steel tube sample are connected to connector 31 by the specimen length cut, if contrast weld pipe, experimentally object, can reasonable Arrangement position while welding.
(3) close the first valve 41, second valve 43 and detent 2, and open stirrer 8 fluid media (medium) in container 1 is stirred.If in the embodiment comprising bypass fluid path 7, also need to close bypass valve 71.
(4) open detent 2, first valve 41, regulate the second valve 43, after reaching the required flow of test, close the first valve 41, flow control is at 0.8 ton/minute.If in the embodiment comprising bypass fluid path 7, also need the bypass valve 71 of closing before to open.
(5) open heating arrangement 6, heat up to fluid media (medium) in container 1, temperature controls at 80 DEG C.
(6), after reaching setting test period, detent 2 and the second valve 43 is closed.
(7) copper pipe and stainless-steel tube are weighed, surface topography observation, carry out data analysis and Comprehensive Assessment.
Embodiment two: to evaluate the thin-wall titanium welding pipe quality of two batches, the experimental procedure of being undertaken by pilot system of the present invention is as follows:
(1) configure simulated seawater solution, add NaCl, KCl, MgCl2 etc., make solution chlorinity reach 15 ‰, with 0.1mol/LNaOH solution adjustment PH to 8.0; Add silicon carbide abrasive, the particle diameter of abrasive material and content are: 0.01mm, 0.2 ‰; 0.10mm, 0.2 ‰; 0.20mm, 0.2 ‰; Sea water solution good for aforementioned arrangements is loaded container 1.
(2) be that the titanium pipe sample of 80mm is connected to connector 31 by the specimen length cut, for thin walled welds pipe, experimentally object, can reasonable Arrangement position while welding.
(3) close the first valve 41, second valve 43 and detent 2, and open stirrer 8 fluid media (medium) in container 1 is stirred.If in the embodiment comprising bypass fluid path 7, also need to close bypass valve 71.
(4) open detent 2, first valve 41, regulate the second valve 43, after reaching the required flow of test, close the first valve 41, flow control is at 1.0 tons/minute.If in the embodiment comprising bypass fluid path 7, also need the bypass valve 71 of closing before to open.
(5) keep room temperature, temperature controls at 25 DEG C.
(6), after reaching setting test period, detent 2 and the second valve 43 is closed.
(7) thin-wall titanium welding pipe is weighed, surface topography observation, carry out data analysis and Comprehensive Assessment.
Embodiment three: granular material Slurry Pipeline Transportation, taking out sandpipe quality by evaluation riverbed is example, and the experimental procedure of carrying out with the present invention is as follows:
(1) configure thin mud solution, control mud viscosity is 15 ± 0.5S; Add silicon carbide abrasive, particle diameter and the content of abrasive material correspond to: 0.10mm, 0.3 ‰;
(2) sandpipe of taking out intercepted directly is connected with connector 31;
(3) close bypass valve 71, first valve 41, second valve 43 and detent 2, open stirrer 8;
(4) open bypass valve 71, second valve 43, first valve 41, after reaching the required flow of experiment, close the second valve 43, flow control is at 2.0 tons/minute;
(5) keep room temperature, temperature controls at 25 DEG C;
(6) treat that experiment proceeds to setting-up time, complete experiment; Close detent 2 and the first valve 41;
(7) mud is replaced by pure water, open system, detergent line, with anti-clogging;
(8) this is taken out that sandpipe is weighed, surface topography observation, carry out data analysis and Comprehensive Assessment.
Embodiment four: this embodiment and embodiment three difference are, in step (1), particle diameter and the content of abrasive material correspond to: 0.20mm, 0.2 ‰.In addition, other are all identical with embodiment three.
Embodiment five: this embodiment and embodiment three difference are, in step (1), particle diameter and the content of abrasive material correspond to: 0.30mm, 0.1 ‰.In addition, other are all identical with embodiment three.
But, although it should be pointed out that above-mentioned is only that example is described in detail pilot system of the present invention and method with seawater and mud, can not understand and be only limitted to this, such as, other liquid phases such as lubricating oil can also be adopted to carry out washout test with reference to above-mentioned.
It should be noted that, each the concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any applicable mode.Different each concrete technical characteristic described in embodiment, in reconcilable situation, also can be combined by any applicable mode each other.In order to avoid unnecessary repetition, the present invention is no longer described various possible array mode.
Above with reference to embodiment to invention has been detailed description, be illustrative and not restrictive, in the change do not departed under general plotting of the present invention and amendment, all within protection scope of the present invention.
Claims (10)
1., containing a washout test system for the polyphasic flow of solid-liquid, it is characterized in that, comprising:
Container, for the fluid media (medium) of splendid attire containing the polyphasic flow of solid-liquid;
Fluid path, is communicated to described container;
Detent, for controlling described fluid media (medium) from described container to the flowing of described fluid path and flowing velocity;
At least one connector, it is positioned at described fluid path, and this connector is provided at least one sample pipe of described fluid media (medium) by described pilot system for being connected to; And
Speed governing measuring unit, the speed flowed for regulating the described fluid media (medium) flowing through described sample pipe through described fluid path also measures this speed.
2. the washout test system of the polyphasic flow containing solid-liquid according to claim 1, is characterized in that, described speed governing measuring unit comprise be one another in series flowmeter, the first valve and and described flowmeter, the first valve parallel connection the second valve.
3. the washout test system of the polyphasic flow containing solid-liquid according to claim 1, is characterized in that, also comprise:
Heating unit, for heating the described fluid media (medium) in described pilot system;
Temperature sensor, is positioned at described fluid path place, for measuring the temperature of fluid media (medium) described in described fluid path; And
Control module, be connected to described heating unit and described temperature sensor, for by the temperature measured by described temperature sensor be used for representing that the information setting test temperature compares, and control when the temperature measured by described temperature sensor is equal to or greater than described setting test temperature described heating unit stop heating.
4. the washout test system of the polyphasic flow containing solid-liquid according to claim 1, is characterized in that, also comprise: stirrer, for stirring the described fluid media (medium) in described container.
5. the washout test system of the polyphasic flow containing solid-liquid according to claim 1, is characterized in that, also comprises the bypass fluid path of the extraction of the outlet from described detent being serially connected with bypass valve.
6. the washout test system of the polyphasic flow containing solid-liquid according to claim 1, it is characterized in that, described fluid path is communicated with described container closed loop.
7. the washout test system of the polyphasic flow containing solid-liquid according to any one of claim 1 to 6, it is characterized in that, described detent is water pump.
8. the washout test system of the polyphasic flow containing solid-liquid according to any one of claim 1 to 6, it is characterized in that, described first valve is stop valve, and described second valve is the valve of adjustable aperture.
9. the washout test system of the polyphasic flow containing solid-liquid according to any one of claim 1 to 6, is characterized in that, described sample pipe is the straight length directly intercepted from product to be checked.
10. utilize the washout test system of the polyphasic flow containing solid-liquid described in any one of the claims 1 to 9 to carry out a method for washout test, it is characterized in that, comprise the steps:
The fluid media (medium) of the polyphasic flow containing solid-liquid configured by test given requirements is placed in container;
Described sample pipe is connected with connector;
Close the second valve and detent, and the fluid media (medium) in container is stirred;
Open detent, the first valve, regulate the second valve, after reaching the required flow of test, close the first valve;
After reaching setting test period, close the second valve and detent;
Take off described sample pipe, and it is weighed, surface topography observation, Comprehensive Assessment.
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Cited By (5)
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| CN105842097A (en) * | 2016-03-24 | 2016-08-10 | 西南石油大学 | High-temperature high-pressure tubular-flow erosion corrosion experiment device |
| CN106248570A (en) * | 2016-07-08 | 2016-12-21 | 西南石油大学 | A kind of High Temperature High Pressure multiphase flow dynamic and visual loop corrosion tester and method |
| CN106990010A (en) * | 2017-05-11 | 2017-07-28 | 中国民航大学 | Liquid erosion test device in a kind of many reference amounts regulation and control pipeline |
| CN110567829A (en) * | 2019-09-05 | 2019-12-13 | 首钢集团有限公司 | Pipeline type experimental device for simulating seawater erosion corrosion |
| CN113984639A (en) * | 2021-10-29 | 2022-01-28 | 中船黄埔文冲船舶有限公司 | Pipe flow type corrosion test device |
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| CN106990010A (en) * | 2017-05-11 | 2017-07-28 | 中国民航大学 | Liquid erosion test device in a kind of many reference amounts regulation and control pipeline |
| CN110567829A (en) * | 2019-09-05 | 2019-12-13 | 首钢集团有限公司 | Pipeline type experimental device for simulating seawater erosion corrosion |
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