CN103454186A - Experiment system for measuring migration and sedimentation of granular corrosion products in pipeline - Google Patents
Experiment system for measuring migration and sedimentation of granular corrosion products in pipeline Download PDFInfo
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- CN103454186A CN103454186A CN2013103973840A CN201310397384A CN103454186A CN 103454186 A CN103454186 A CN 103454186A CN 2013103973840 A CN2013103973840 A CN 2013103973840A CN 201310397384 A CN201310397384 A CN 201310397384A CN 103454186 A CN103454186 A CN 103454186A
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Abstract
The invention belongs to the technical field of multiphase flow measurement and particularly relates to an experiment system for measuring migration and sedimentation of granular corrosion products in a pipeline. The experiment system is characterized in that a blending device is arranged in a water tank, and the pipeline is arranged on the bottom of the water tank, is sequentially connected with a first valve, a transition section, a gate valve, a first experiment section, a turbine meter, a pressure gauge, a second experiment section, a third experiment section, a fourth experiment section and a second valve and is connected back to the water tank. The system has multiple controllable variables including the flow speed, the grain diameter, the grain concentration, the pH value and different channel structures and surface materials, can be used for researching the migration and the sedimentation of grains in a solid phase and a liquid phase and particularly researching the turbulent motion, the turbulent sedimentation and the like of specific grains on the surfaces of a specific flow field and a specific material and can realize relatively comprehensive and meticulous real-time dynamic observation and measurement to the movement of the grains through partially-visual experiment tube sections; meanwhile, the system is convenient to operate and has detachability.
Description
Technical field
The invention belongs to the multiphase flow measurement technical field, particularly a kind of graininess corrosion product moves and the experimental system of sedimentation measurement in pipeline.
Background technology
Nuclear power plant, in long-time running, just can produce the graininess corrosion product in a circuit system, and the accumulation of this type of corrosion product is very unfavorable to operation in a large number, affects fuel element and steam generator and conducts heat, and has increased the resistance to flow of cooling medium.The more important thing is, in reactor core, flow or the corrosion product of deposition is subject to neutron irradiation and forms the corrosion product of activation, the corrosion product of these activation is deposited on the outer equipment surface of reactor core, has produced radioactive contamination, has greatly improved the radiation intensity around equipment after the shutdown.These graininess corrosion products are not only one of important source item of nuclear power plant's one loop radiation, and its migratory behaviour also to ionic forms (
60co) corrosion product produces material impact.Therefore, the motion of research graininess corrosion product has important science and actual value with the deposition behavioral trait, simultaneously, can be graininess corrosion product migratory behaviour in nuclear power station one loop and provides fundamental basis.
To reaching the outer particle deposition measurement of pipe and corresponding structural design and processing technology in the specialty metal pipe, experimental system has been proposed to requirements at the higher level.At present, there is the experimental measurement system of the graininess corrosion product migration deposition under many influence factors, also do not have open.
Summary of the invention
The present invention seeks in order to overcome the deficiency of above-mentioned technology and materials limitations, provide a kind of graininess corrosion product to move in pipeline and the experimental system of sedimentation measurement.
The technical solution used in the present invention is:
Arrange and mix device in water tank, the bottom of water tank arranges pipeline, be connected successively, and take back water tank with the first valve, transition section, pump, gate valve, the first test section, turbo flow meter, tensimeter, the second test section, the 3rd test section, the 4th test section, the second valve successively.
The feeding device that described water tank is comprised of screen cloth and precision balance is reinforced, and acidometer is set; Described the first test section, the second test section and the 4th each segmentation of test section are weighed by precision balance respectively, and measure roughness by step instrument.
Described the first test section is straight length, and internal layer and skin are stainless steel-304 pipe, and centre is packed layer.
Described the second test section is straight length, and the 3rd test section is bend loss, and two parts form the U-shaped pipe; The Inco nickel that the inner layer material of the second test section is step-by-step arrangement-690, the outer diaphragm seal that coats, outermost layer is stainless steel-304 pipe; The Inco nickel that the inner layer material of the 3rd test section is step-by-step arrangement-690, skin is stainless steel-304 pipe, and is provided with packed layer between internal layer and skin.
The material of described water tank is organic glass, and at the water tank wall, rule is set, and surrounding installs fair water fin additional.
The innermost layer of described the 4th test section is support stick, and outside coats diaphragm seal, the zirconium-4 alloy pipe that outermost layer is step-by-step arrangement; The 4th test section is fixed on back up pad, and back up pad has five discharge orifices that are evenly arranged and four pilot holes.
Described the first test section, the second test section, the 3rd test section, each segmentation quality of the 4th test section all are less than 100g.
Described lift of pump is 10m.
The measuring accuracy of described turbo flow meter is 0.01.
The measuring accuracy of described acidometer is 0.01.
Beneficial effect of the present invention is:
This system is a set of comprehensive system, can be used for the research of particle migration, deposition in the solid-liquid two-phase, comprise that specific particle is in researchs such as the turbulent motion of specific flow field and material surface, turbulent flow depositions, can also by part visualized experiment pipeline section to movement of particles realize more comprehensively, finer realtime dynamic observation and measurement.This system controllable variable is many, comprises flow velocity, grain diameter, granule density, pH value, different channel architecture and surfacing; This system is different from other system and is that it has realized the measurement of to the specialty metal pipeline graininess corrosion product in interior stream, outflow situation migration deposition, simultaneously easy to operate and possess detachability.
The accompanying drawing explanation
Fig. 1 is the experimental system figure that the particle erosion product moves and deposits in pipeline;
The transversal profile view that Fig. 2 (a) is the first test section, the second test section, the 3rd test section;
The longitudinal section view that Fig. 2 (b) is the first test section, the second test section;
The cross section view that Fig. 3 (a) is the 3rd test section;
The longitudinal section view that Fig. 3 (b) is the 3rd test section.
Number in the figure:
1-screen cloth, 2-precision balance, 3-acidometer, 4-water tank, 5-mix device, 6-the first valve, 7-transition section, 8-pump, 9-gate valve, 10-the first test section, 11-turbo flow meter, 12-tensimeter, 13-the second test section, 14-the 3rd test section, 15-the 4th test section, 16-the second valve, 17-step instrument; 18-internal layer, 19-packed layer, 20-skin; 21-support stick, 22-packed layer, 23-skin.
Embodiment
The invention provides that a kind of graininess corrosion product moves in pipeline and the experimental system of sedimentation measurement, below in conjunction with accompanying drawing and instantiation, the invention will be further described.
As shown in Figure 1, device 5 is mixed in the interior setting of water tank 4, the bottom of water tank 4 arranges pipeline, be connected successively, and take back water tank 4 with the first valve 6, transition section 7, pump 8, gate valve 9, the first test section 10, turbo flow meter 11, tensimeter 12, the second test section 13, the 3rd test section 14, the 4th test section 15, the second valve 16 successively.
Obtain the particle size range of expectation by the screen cloth 1 of specific order number, and with precision balance 2(precision be ten thousand/) it is weighed, the experiment for the treatment of of known particle diameter and quality is placed in water tank 4 with particle, and experimental water is distilled water, and the water tank material is organic glass; Mix device 5 and be placed in water tank 4 tops, it mixes the bar high water tank height 2/3rds that submerges, and stirs pole length adjustable, and the water tank surrounding installs fair water fin additional.The second test section 13, the 3rd test section 14, the 4th test section 15 both can be linked in sequence, and can also only connect wherein arbitrary test section.The ph value of measuring in water tank 4 with acidometer 3, by the tube wall roughness of step instrument 17 each test sections of measurement.
Described water tank 4 walls are ruler fixedly, and volume is 500 * 500 * 1700mm.
Described the first test section 10 is straight length, and length is 600mm, and internal layer 18 and outer 20 is stainless steel-304 pipe, and intermediate filling layer 19 is sealed Cellophane.
Described the second test section 13 is straight length, and the 3rd test section 14 is bend loss, and two parts form the U-shaped pipe, and the radius of bend loss is divided into 102.43mm, 129.86mm and 157.29mm three types; Inco nickel-690 pipe that the internal layer 18 of the second test section 13 is step-by-step arrangement, packed layer 19 is sealed Cellophane, outer 20 is stainless steel-304 pipe; Inco nickel-690 pipe that the internal layer 18 of the 3rd test section 14 is step-by-step arrangement, outer 20 is stainless steel-304 pipe, and is provided with packed layer 19 between internal layer 18 and outer 20.Wherein, Inco nickel-690 pipe external diameter 19.05mm, wall thickness 1.09mm
The innermost layer of described the 4th test section 15 is support stick 21, and outside coats the diaphragm seal as packed layer 22, the zirconium-4 alloy pipe that skin 23 is step-by-step arrangement; The 4th test section 15 is fixed on back up pad, and back up pad has five discharge orifices that are evenly arranged and four pilot holes.This test section is visible segments.
The quality of each test section segmentation all is less than 100g.
The lift of pump 8 is 10m.
The measuring accuracy of turbo flow meter 11 is 0.01.
The graininess corrosion product moves in pipeline and the operational scheme of sedimentation experiment system comprises three phases:
First stage: the liquid level of adjustment definite water tank 4, open the first valve 6, start pump 8, whether the observation experiment system is stable in operational process, observes whether drainage is arranged; If, without drainage and the stable water pump 8 that stops, closing the first valve 6, ducted water is passed through to default discharge orifice emptying, again the scale liquid position height.
Subordinate phase: close the first valve 6, the particle of determining particle size range and quality is positioned in water tank 4, add certain density LiOH in water tank, stir bar and stretch under liquid level correct position and start and mix device 5, observe and whether definite particle distributes and mix in water tank.In water tank, blend sample is carried out the PH test, and record data, after particle mixes; first open the first valve 6, restart pump 8, observe the opening degree of the gate valve 9 of turbo flow meter 11 readings regulating loop; determine suitable flow, system starts circular flow.
Phase III: confirm experimental system stable after and reach the requirement of working time, stop pump 8 work, close the first valve 6 and the second valve 16, open default discharge orifice, treat that in pipeline, water is emptying, by each test section dismounting, take out test material, each segmentation of label is done to dry the processing, and to each sectional-weighing, record data.
The flow working medium that related particle moves and deposits in pipeline is distilled water, to eliminate the impact of impurity on particle deposition in water.
By the equal segmentation markers sequence number of each test section as: 1,2,3 ... before experiment, above-mentioned material is cleaned and obtains corresponding quality in freeze-day with constant temperature is m
b1, m
b2, m
b3after experiment finishes, reappose in thermostatic drying chamber, the quality that records test material is m
d1, m
d2, m
d3record difference DELTA m between the two
1=m
b1-m
d2, Δ m
2=m
b2-m
d2, Δ m
3=m
b3-m
d3......
Even oxidation must be carried out in the test material surface.PH value is regulated by the LiOH of 0.1mol/L, and the pH value adjustable extent of recirculated water is 7-10.5, by acidometer 3, is measured, and precision is 0.01.
Claims (10)
1. a graininess corrosion product moves and the experimental system of sedimentation measurement in pipeline, it is characterized in that, arrange and mix device (5) in water tank (4), the bottom of water tank (4) arranges pipeline, be connected successively with the first valve (6), transition section (7), pump (8), gate valve (9), the first test section (10), turbo flow meter (11), tensimeter (12), the second test section (13), the 3rd test section (14), the 4th test section (15), the second valve (16) successively, and take back water tank (4).
2. a kind of graininess corrosion product according to claim 1 moves and the experimental system of sedimentation measurement in pipeline, it is characterized in that, the feeding device that described water tank (4) is comprised of screen cloth (1) and precision balance (2) is reinforced, and acidometer (3) is set; Described the first test section (10), the second test section (13) and the 4th test section (15) are weighed by precision balance (2) respectively, and measure roughness by step instrument (17).
3. a kind of graininess corrosion product according to claim 1 moves and the experimental system of sedimentation measurement in pipeline, it is characterized in that, described the first test section (10) is straight length, and internal layer and skin are stainless steel-304 pipe, and centre is packed layer.
4. a kind of graininess corrosion product according to claim 1 moves and the experimental system of sedimentation measurement in pipeline, it is characterized in that, described the second test section (13) is straight length, and the 3rd test section (14) is bend loss, and two parts form the U-shaped pipe; The Inco nickel-690 that the inner layer material of the second test section (13) is step-by-step arrangement, the outer diaphragm seal that coats, outermost layer is stainless steel-304 pipe; The Inco nickel-690 that the inner layer material of the 3rd test section (14) is step-by-step arrangement, skin is stainless steel-304 pipe, and is provided with packed layer between internal layer and skin.
5. a kind of graininess corrosion product according to claim 1 moves and the experimental system of sedimentation measurement in pipeline, it is characterized in that, the material of described water tank (4) is organic glass, and at the water tank wall, rule is set, and surrounding installs fair water fin additional.
6. a kind of graininess corrosion product according to claim 1 moves and the experimental system of sedimentation measurement in pipeline, it is characterized in that, the innermost layer of described the 4th test section (15) is support stick, and outside coats diaphragm seal, the zirconium-4 alloy pipe that outermost layer is step-by-step arrangement; The 4th test section (15) is fixed on back up pad, and back up pad has five discharge orifices that are evenly arranged and four pilot holes.
7. a kind of graininess corrosion product according to claim 1 moves and the experimental system of sedimentation measurement in pipeline, it is characterized in that, the quality of described the first test section (10), the second test section (13), the 3rd test section (14), the 4th test section (15) all is less than 100g.
8. a kind of graininess corrosion product according to claim 1 moves and the experimental system of sedimentation measurement in pipeline, it is characterized in that, the lift of described pump (8) is 10m.
9. a kind of graininess corrosion product according to claim 1 moves and the experimental system of sedimentation measurement in pipeline, it is characterized in that, the measuring accuracy of described turbo flow meter (11) is 0.01.
10. a kind of graininess corrosion product according to claim 2 moves and the experimental system of sedimentation measurement in pipeline, it is characterized in that, the measuring accuracy of described acidometer (3) is 0.01.
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Cited By (8)
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| CN103983480A (en) * | 2014-05-23 | 2014-08-13 | 黄河水利委员会黄河水利科学研究院 | Moveable device for monitoring content of sand of runoff silt distributed in different spaces |
| CN104409118A (en) * | 2014-10-23 | 2015-03-11 | 华北电力大学 | Thermal hydraulic experimental system and method for study on corrosion product deposit of fusion reactor |
| 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 |
| CN106324191A (en) * | 2016-08-05 | 2017-01-11 | 中国海洋石油总公司 | Submarine pipeline scaling dynamic monitoring experimental device and application method thereof |
| CN110006798A (en) * | 2019-03-25 | 2019-07-12 | 中海石油(中国)有限公司深圳分公司 | The experimental provision and method of Cutting movement deposition are returned out in simulation deep water surface layer drilling well |
| CN111537429A (en) * | 2020-05-21 | 2020-08-14 | 中国石油化工股份有限公司 | Shale gas well shaft dynamic corrosion rate simulation measurement device and method |
| CN111551467A (en) * | 2020-06-19 | 2020-08-18 | 南京工业大学 | Method for measuring and calculating scouring pollution amount of deposited particles |
| CN114184509A (en) * | 2021-12-01 | 2022-03-15 | 国网安徽省电力有限公司电力科学研究院 | Experimental system for testing association rule of particle concentration and surface damage |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103983480A (en) * | 2014-05-23 | 2014-08-13 | 黄河水利委员会黄河水利科学研究院 | Moveable device for monitoring content of sand of runoff silt distributed in different spaces |
| CN103983480B (en) * | 2014-05-23 | 2016-11-16 | 黄河水利委员会黄河水利科学研究院 | A kind of packaged type runoff and sediment different spaces distribution silt content monitoring device |
| CN104409118A (en) * | 2014-10-23 | 2015-03-11 | 华北电力大学 | Thermal hydraulic experimental system and method for study on corrosion product deposit of fusion reactor |
| 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 |
| CN106324191A (en) * | 2016-08-05 | 2017-01-11 | 中国海洋石油总公司 | Submarine pipeline scaling dynamic monitoring experimental device and application method thereof |
| CN110006798A (en) * | 2019-03-25 | 2019-07-12 | 中海石油(中国)有限公司深圳分公司 | The experimental provision and method of Cutting movement deposition are returned out in simulation deep water surface layer drilling well |
| CN111537429A (en) * | 2020-05-21 | 2020-08-14 | 中国石油化工股份有限公司 | Shale gas well shaft dynamic corrosion rate simulation measurement device and method |
| CN111551467A (en) * | 2020-06-19 | 2020-08-18 | 南京工业大学 | Method for measuring and calculating scouring pollution amount of deposited particles |
| CN114184509A (en) * | 2021-12-01 | 2022-03-15 | 国网安徽省电力有限公司电力科学研究院 | Experimental system for testing association rule of particle concentration and surface damage |
| CN114184509B (en) * | 2021-12-01 | 2023-10-20 | 国网安徽省电力有限公司电力科学研究院 | Experimental system for testing association rule of particle concentration and surface damage |
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