CN105004507A - Rod cluster channel flow visualization experiment system - Google Patents
Rod cluster channel flow visualization experiment system Download PDFInfo
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- CN105004507A CN105004507A CN201510381950.8A CN201510381950A CN105004507A CN 105004507 A CN105004507 A CN 105004507A CN 201510381950 A CN201510381950 A CN 201510381950A CN 105004507 A CN105004507 A CN 105004507A
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Abstract
The invention provides a rod cluster channel flow visualization experiment system. The experiment system comprises four parts: a water loop, a tracer branch, a rod beam channel and a data collection system. The main devices in the water loop comprise a circulating water tank, a centrifugal pump, a flowmeter, a thermometer and a pressure gage. The tracer branch mainly comprises a tracer storage box, an injection pump, an adjusting valve and a tracer injection syringe needle. The rod beam channel mainly comprises a channel body, a visual rod beam, a positioning screen work and an exhaust valve. The data collection system mainly comprises a computer, a data collection plate and a camera. The system is simple and compact, the price is low, visual observation is convenient, and the research condition scope is wide.
Description
Technical field
The present invention relates to a kind of experimental system, particularly relate to a kind of cluster channel flow experimental system visualizing, the technical field related to comprises fluid mechanics, reactor thermal-hydraulics.
Background technology
In nuclear energy engineering industry, cluster passage is the basic runner form of reactor core.To the grasp of cluster channel flow characteristic, contribute to realizing core flow and better distribute, reduce the hot localised points temperature of reactor core, thus promote the security feature of reactor, therefore domestic and international many scholars have made large quantifier elimination to this.Traditional experiment research is pressure drop diagnostic method, namely by the pressure drop in Measurement channel, carrys out the drag characteristic in analysis channel, thus studies flow characteristics.But this method by the bulk parameter recorded, and then can only be deduced the liquid form in cluster, the micro flow characteristic in runner directly can not be obtained, such as fluidised form, whirlpool, velocity flow profile etc.But these micro-parameters have vital effect for the design of reactor core, in order to the research that becomes more meticulous to cluster flow characteristics, researchers have employed PIV technology or LDV technology is studied the flow field in rod bundle channel.As (Hydraulic benchmark data for PWR mixing vane grid) such as Conner have employed PIV technology when studying the rod bundle channel of band grid spacer, the velocity distribution in runner is measured.Also use visual research method in this article, but together with fine trace particle is blended directly in recirculated water in test by author, the motion state of trace particle cannot be observed intuitively, need the reconstruct being realized velocity field by special algorithm.Experiment that Sang Yong Han etc. (Measurements of the flow characteristics of the lateral flow in the 6 × 6rod bundles with TandemArrangement Vanes) have employed LDV technology just when studying band 6 × 6 cluster passage crossing current.Because this technology is poor near wall degree of accuracy, therefore author have employed the model that equal proportion is amplified in testing, instead of according to the experiment that physical size is carried out, experimental result is directly perceived not.No matter be PIV or LDV, be all by the velocity field distribution obtained in runner, flowing in runner is analyzed, and need through comparatively complex technology process, can not observe the mixed process in runner intuitively.And these two kinds of experimental techniques depend on expensive experimental facilities, research cost is high.Therefore being necessary to design a kind of experimental system visualizing for simulating cluster channel flow, realizing, cheapness, intuitively visual research convenient to flow characteristics in rod bundle channel.
Summary of the invention
The object of the invention is to provide one simply compact, cheap, visual inspection is convenient, the cluster channel flow experimental system visualizing that research condition range is wide.
The object of the present invention is achieved like this: comprise water loop, data acquisition system (DAS), cluster passage and tracer agent branch road, described water loop comprises successively with the cyclic water tank that pipeline connects, centrifugal pump, first valve, second valve and flowmeter, the pipeline of flowmeter end is also provided with thermometer and tensimeter, the 3rd valve is provided with on pipeline between first valve and the second valve and between cyclic water tank, in cyclic water tank, cycle fluid is housed, described data acquisition system (DAS) comprises computer, video camera and the data acquisition board be connected with computer, described cluster passage comprises channel body, be arranged on the flange of channel body two ends, the grid spacer being arranged on the visual cluster in channel body and being arranged on visual cluster, the upper of channel body is also provided with vent valve, described tracer agent branch road comprises the tracer agent water tank be connected successively, injection pump, 4th valve and tracer agent syringe needle, described thermometer, tensimeter is all connected with data acquisition board with flowmeter, the pipeline of flowmeter end is connected with the inlet end of channel body, the endpiece of channel body is connected with cyclic water tank by pipeline, described tracer agent syringe needle injects channel body and visually to restrain in the space formed.
The present invention also comprises some architectural features like this:
1. described in, the refractive index of the refractive index of the material of visual cluster and the material of cycle fluid is less than 5%, and the two ends metal bar of described visual cluster clogs, and is full of water in described visual cluster.
2. described in, the material of channel body is organic glass.
Compared with prior art, the invention has the beneficial effects as follows: the method for visualizing that 1) present invention employs tracer agent, can intuitive and convenient cluster channel flow characteristic be studied; (2) adopt the cluster material two ends metal material beyond the Great Wall with cycle fluid refractive index close, namely can distort by removal of images, can structural strength be increased again, ensure that cluster is directly spent; (3) adopt injection pump to inject tracer agent, can control accurately to inject flow, contribute to the research that becomes more meticulous; (4) structure is simple, cheap, easily processes.
Accompanying drawing explanation
Fig. 1 is system architecture schematic diagram of the present invention;
Fig. 2 is cluster access diagram of the present invention;
Fig. 3 is data acquisition system (DAS) schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail.
Composition graphs 1, the present invention includes water loop, tracer agent branch road, cluster passage and data acquisition system (DAS) four parts.Major equipment in flow system comprises cyclic water tank 1, centrifugal pump 2, first valve 3, the 3rd valve 4, second valve 5, flowmeter 6, thermometer 7 and tensimeter 8, circulate in order to realize the single-phase of working medium, by regulating the first valve 3, the aperture of the 3rd valve 4, second valve 5 can regulating loop flow.Tracer agent branch road mainly comprises tracer agent water tank 9, injection pump 10, regulates the 4th valve 11, tracer agent syringe needle, in order to provide the tracer agent of suitable flow.Cluster passage mainly comprises channel body 13, visual cluster 14, grid spacer 15, vent valve 16, in order to the flowing in mock-up reactor cluster passage.Acquisition system part mainly comprises computer 17, data acquisition board 18 and video camera 19, in order to record experimental image and correlation parameter.During experiment by each several part according to structure shown in figure by each several part with connecting, got final product the installation of cost apparatus.During experiment, loop is full of water, utilizes vent valve 16 to be discharged by the air in loop; In loop, working medium circulates under the driving of centrifugal pump 2, carrys out regulating loop flow by regulating the aperture of three valves 3,4,5.Flow working medium enters cluster passage successively after flowmeter 6, thermometer 7, tensimeter 8.The tracer agent stored in tracer agent storage box 9 injects cluster passage via syringe needle under the driving of injection pump 10, is regulated inject flow by control valve 11.Utilize video camera 19 to take institute's observation position, and store shooting image with computer 19.
Composition graphs 2, in the present invention, visual cluster is made up of body 13, visual cluster 14 and grid spacer 15.The wall of experiment body 13 forms by organic glass is bonding, contributes to visual inspection; Body two ends are closed by ring flange, the convenient disassembly of body, are beneficial to the adjustment of cluster structure in body.Visual cluster 14 adopts the hollow pipe made with the material of cycle fluid refractive index close, can prevent the distortion of taking image; Pipe ends metal bar 20 clogs, to strengthen the intensity of cluster.Channel body adds man-hour, first processes runner body and visual cluster respectively according to the size of simulated cluster passage; Recycling grid spacer is fixing according to corresponding form arrangement by cluster; Then visual cluster is put into runner body from body two ends, then body two end flanges is installed, the processing of cluster passage can be completed.
Composition graphs 3, in the present invention, the data that flowmeter 6, thermometer 7, tensimeter 8 gather are recorded by data acquisition board 18, are stored to computer 17; Meanwhile, the image that video camera 19 is taken also carries out record by computer 17, so that further data analysis.
Cluster in cluster passage of the present invention adopts the material with working medium refractive index close, difference not higher than 5%, can not draw when take through cluster because of working medium and cluster intensity and directly spend.Beam passage two ends adopt the mode of flangeseal, not only can effectively prevent from leaking, also help the dismounting of cluster passage, facilitate the adjustment of cluster structure in passage.Tracer agent is injected by injection pump, can accurately control the flow injecting tracer agent, to adapt to corresponding operating mode by by-pass valve control.
Claims (3)
1. cluster channel flow experimental system visualizing, it is characterized in that: comprise water loop, data acquisition system (DAS), cluster passage and tracer agent branch road, described water loop comprises successively with the cyclic water tank that pipeline connects, centrifugal pump, first valve, second valve and flowmeter, the pipeline of flowmeter end is also provided with thermometer and tensimeter, the 3rd valve is provided with on pipeline between first valve and the second valve and between cyclic water tank, in cyclic water tank, cycle fluid is housed, described data acquisition system (DAS) comprises computer, video camera and the data acquisition board be connected with computer, described cluster passage comprises channel body, be arranged on the flange of channel body two ends, the grid spacer being arranged on the visual cluster in channel body and being arranged on visual cluster, the upper of channel body is also provided with vent valve, described tracer agent branch road comprises the tracer agent water tank be connected successively, injection pump, 4th valve and tracer agent syringe needle, described thermometer, tensimeter is all connected with data acquisition board with flowmeter, the pipeline of flowmeter end is connected with the inlet end of channel body, the endpiece of channel body is connected with cyclic water tank by pipeline, described tracer agent syringe needle injects channel body and visually to restrain in the space formed.
2. a kind of cluster passages experimental system visualizing according to claim 1, it is characterized in that: the refractive index of material of described visual cluster and the refractive index of the material of cycle fluid are less than 5%, the two ends metal bar of described visual cluster clogs, and is full of water in described visual cluster.
3. a kind of cluster passages experimental system visualizing according to claim 1 and 2, is characterized in that: the material of described channel body is organic glass.
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Cited By (10)
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| CN105869685A (en) * | 2016-04-06 | 2016-08-17 | 哈尔滨工程大学 | Thermal hydraulic experiment device and method for simulating nuclear reactor neutron reactivity feedback process |
| CN106653115A (en) * | 2017-01-09 | 2017-05-10 | 中国核动力研究设计院 | Rod bundle channel pressure difference measurement assembly under movement condition |
| CN107452430A (en) * | 2017-09-01 | 2017-12-08 | 哈尔滨工程大学 | A kind of telescopic cluster passage multiple physical field Visual Ontology design |
| CN107578831A (en) * | 2017-07-28 | 2018-01-12 | 上海交通大学 | A kind of flow-field visualized measuring system of transverse direction based on compensation of refractive index and method |
| CN109215810A (en) * | 2018-09-17 | 2019-01-15 | 中国核动力研究设计院 | A kind of accurate experiment acquisition methods of spacer grid of fuel assembly coefficient of partial resistance |
| CN110567678A (en) * | 2019-08-30 | 2019-12-13 | 中国船舶工业集团公司第七0八研究所 | beam device for testing hydrodynamic performance of propeller |
| CN110729060A (en) * | 2019-10-24 | 2020-01-24 | 中国核动力研究设计院 | Visual experimental device and method for flow traces in rod bundle channel under motion condition |
| CN112504660A (en) * | 2020-11-17 | 2021-03-16 | 哈尔滨工程大学 | Visual valve flow field-pressure pulsation coupling measurement experiment system |
| CN113140339A (en) * | 2021-03-10 | 2021-07-20 | 复旦大学 | Loop device for testing hydraulic performance of fast neutron reactor fuel assembly |
| CN113327696A (en) * | 2021-06-08 | 2021-08-31 | 中山大学 | Experimental method for measuring rod bundle channel equivalent mixing coefficient |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869685A (en) * | 2016-04-06 | 2016-08-17 | 哈尔滨工程大学 | Thermal hydraulic experiment device and method for simulating nuclear reactor neutron reactivity feedback process |
| CN106653115A (en) * | 2017-01-09 | 2017-05-10 | 中国核动力研究设计院 | Rod bundle channel pressure difference measurement assembly under movement condition |
| CN106653115B (en) * | 2017-01-09 | 2018-01-02 | 中国核动力研究设计院 | A kind of cluster passage differential pressure measurement component under moving condition |
| CN107578831A (en) * | 2017-07-28 | 2018-01-12 | 上海交通大学 | A kind of flow-field visualized measuring system of transverse direction based on compensation of refractive index and method |
| CN107452430A (en) * | 2017-09-01 | 2017-12-08 | 哈尔滨工程大学 | A kind of telescopic cluster passage multiple physical field Visual Ontology design |
| CN109215810A (en) * | 2018-09-17 | 2019-01-15 | 中国核动力研究设计院 | A kind of accurate experiment acquisition methods of spacer grid of fuel assembly coefficient of partial resistance |
| CN110567678A (en) * | 2019-08-30 | 2019-12-13 | 中国船舶工业集团公司第七0八研究所 | beam device for testing hydrodynamic performance of propeller |
| CN110567678B (en) * | 2019-08-30 | 2021-06-15 | 中国船舶工业集团公司第七0八研究所 | Beam device for testing hydrodynamic performance of propeller |
| CN110729060A (en) * | 2019-10-24 | 2020-01-24 | 中国核动力研究设计院 | Visual experimental device and method for flow traces in rod bundle channel under motion condition |
| CN112504660A (en) * | 2020-11-17 | 2021-03-16 | 哈尔滨工程大学 | Visual valve flow field-pressure pulsation coupling measurement experiment system |
| CN113140339A (en) * | 2021-03-10 | 2021-07-20 | 复旦大学 | Loop device for testing hydraulic performance of fast neutron reactor fuel assembly |
| CN113327696A (en) * | 2021-06-08 | 2021-08-31 | 中山大学 | Experimental method for measuring rod bundle channel equivalent mixing coefficient |
| CN113327696B (en) * | 2021-06-08 | 2024-03-15 | 中山大学 | Experimental method for measuring equivalent mixing coefficient of rod bundle channel |
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