CN208187683U - Supercritical carbon dioxide visualization measurement test-bed - Google Patents
Supercritical carbon dioxide visualization measurement test-bed Download PDFInfo
- Publication number
- CN208187683U CN208187683U CN201820614262.0U CN201820614262U CN208187683U CN 208187683 U CN208187683 U CN 208187683U CN 201820614262 U CN201820614262 U CN 201820614262U CN 208187683 U CN208187683 U CN 208187683U
- Authority
- CN
- China
- Prior art keywords
- carbon dioxide
- test
- section
- supercritical carbon
- test section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model proposes a kind of supercritical carbon dioxide visualization measurement test-beds, including fluid reservoir, filter, plunger pump, voltage-stablizer, mass flowmenter, preheating section, test section, plate heat exchanger, vacuum pump and cooling-water machine.Test section forms the dense cluster of 2 × 2 quadrate arrays by four stainless steel tubes, wherein a stainless steel tube middle section is made of transparent quartz glass tube.Outside side's chamber of test section is made of the quartz glass of four sides all-transparent.Sheet laser is injected into test section by the slit that the width opened up on the opaque baffle in test section two sides is 0.5mm, and high-speed camera is acquiring the flow field in test section with incident direction in 90 degree of direction.By the VELOCITY DISTRIBUTION in analysis visualization region, turbulent flow is calculated with the root mean square and average velocity of axes of lateral fluctuation velocity and hands over mixed coefficient, and then analyzes the mixed rule of the friendship between subchannel.
Description
Technical field
The utility model relates to nuclear reactor thermal-hydraulic field, particularly a kind of supercritical carbon dioxide visualizations
Measure rack.
Background technique
Carbon dioxide (CO2) there is preferable stability and nuclear physics property, the property with inert gas, nontoxic,
The characteristics such as rich reserves, naturally occurring, low in cost, it is considered to be the most energy transmission of application prospect and energy transformation working medium
One of.It is 7.38MPa or more, the shape that temperature is 30.98 DEG C or more that supercritical carbon dioxide, which refers to that carbon dioxide operates in pressure,
Phase transformation is not present in state at this time.At this moment carbon dioxide is not perfect gas, and sensitive to temperature and pressure, two at super critical point
Carbonoxide specific heat capacity increases considerably, and pipeline, workshop volume volume can be greatly reduced, and reduces power plant's cost.
Supercritical carbon dioxide can be used as the coolant of nuclear reactor, before the nuclear reactor being water-cooled occurs, quotient
Graphite is all used with nuclear reactor, carbon dioxide is as cooling working medium, with going deep into for high temperature nuclear reactor research, carbon dioxide
It is used in the advanced air cooled reactor of Britain (AGRs) as coolant, core exit temperature reaches 650 DEG C, and operation carbon dioxide has rich
Rich operating experience, provides heat source if it is supercritical carbon dioxide Brayton cycle at this time, and corresponding transformation efficiency can reach
To 50%, there is the competitiveness of highly significant.
It is that thermophysical property is (close using the greatest problem that supercritical carbon dioxide does coolant in terms of thermal-hydraulic
Degree, viscosity, specific heat capacity and thermal coefficient) acute variation near pseudo-critical temperature, it thus may cause heat transfer deterioration or flowing
The abnormal phenomenon such as unstability, existing research are simultaneously insufficient.Further, since nuclear reactor mostly uses greatly dense fuel rod
Beam arrangement, supercritical carbon dioxide can show the flow pulsation phenomenon of large scale in this geometry runner, logical in enhancer
While use is mixed up in turbulent flow friendship between road, flow resistance is further increased.The measurement of mixed coefficient is handed over to mostly use greatly turbulent flow at present
Hot-wire anemometer, chemical tracing, the measurement of subchannel temperature and the methods of laser-Doppler, but these methods are more or less all
Existing defects.For hot-wire anemometer when measuring the fluid velocity of subchannel, hot line probe stream field has certain interference, Er Qiere
Line is very easy to fracture.Charity and reliable acquisition method of the accuracy of chemistry tracer dependent on trace particle, existing rank
The measurement error of section is larger.The insertion meeting stream field of thermocouple has certain interference in subchannel thermometry.In addition, handing over mixed
Coefficient is influenced obviously by thermocouple measurement accuracy.Laser Doppler measuring method is a kind of non-contact measurement, and precision is high, without dry
It disturbs, but the flow velocity of certain point can only be measured, the mixed characteristic of flowing and friendship being unable to get in entire flow field.
Since the pressure of supercritical carbon dioxide is higher (7.4MPa or more), previous stream of supercritical carbon dioxide dynamic characteristic
Research uses stainless steel closing pipe line, using sides such as hot-wire anemometer, chemical tracing, subchannel measurement and laser-Dopplers
Method, but all there is above-mentioned limitation in these methods.It is visual that the utility model builds a set of supercritical carbon dioxide whole flow field flowing
Change test-bed, its friendship between dense cluster is studied using particle image velocimetry (PIV) and mixes characteristic, can not only be obtained more
Extensive test data, and substantially increase measurement accuracy.
This test-bed is with supercritical carbon dioxide Brayton cycle high/low temperature heat exchanger or Supercritical-Pressure Light Water Cooled Reactor reactor core
Research object to the flowing of supercritical carbon dioxide in dense cluster and hands over mixed phenomenon to test using particle image velocimetry
Measurement pays close attention to turbulent flow and hands over mixed coefficient and its changing rule with thermal parameter, and the friendship established under specified conditions mixes model, is
The Core Design of Advanced Nuclear Energy Systems and research and development provide effective test basis.
Utility model content
A kind of supercritical carbon dioxide visualization measurement test-bed, including fluid reservoir, filter, plunger pump, voltage-stablizer,
Mass flowmenter, preheating section, test section, plate heat exchanger, vacuum pump and cooling-water machine, it is characterised in that: vacuum pump and liquid storage
Tank top connection, liquid storage pot bottom are connected with filter, and the filter other end is connected with plunger pump；The outlet of plunger pump is divided into side
Two branches in road and main road, bypass are equipped with control valve and casing, and the other end of casing is connected with the side of fluid reservoir；On main road
It is sequentially arranged vacuum tank and nitrogen cylinder, the two is connected by stainless steel tube；Main road is connect with mass flowmenter, mass flowmenter with
Preheating section connection, preheating section are connected with test section；The outlet of test section is connected with plate heat exchanger, plate heat exchanger and counterbalance valve
Connection, counterbalance valve are connect with the fluid reservoir side；Water cooling unit is connect with casing and plate heat exchanger respectively.
Further, test section forms the dense cluster of 2 × 2 quadrate arrays by four stainless steel tubes, wherein a stainless steel
Pipe middle section is made of transparent quartz glass tube.
Further, outside side's chamber of test section is made of the quartz glass of four sides all-transparent.
Further, outside side's chamber two sides are provided with the slit that 2 width are 0.5mm.
Further, preheating section is an AC electric-heating system, effect be by fluid heat with obtain setting temperature and
Pressure.
Further, the diameter of four stainless steel tubes is 9.5mm, tube center distance 12.6mm, and test segment length is
600mm。
This test-bed can obtain the uninterrupted of supercritical carbon dioxide, speed in the different subchannels of dense cluster
Distribution and turbulent flow hand over mixed coefficient, while can change cluster pitch to study geometry to the shadow of flowing and the mixed characteristic of friendship
It rings, obtains the turbulent flow being all suitable in broad range and hand over mixed model, the regenerator of supercritical carbon dioxide Brayton cycle is designed
And Supercritical-Pressure Light Water Cooled Reactor fuel assembly Thermal Design is of great significance.
Detailed description of the invention
Fig. 1 is that the stream of supercritical carbon dioxide of the utility model moves-heat transfer rig；
Fig. 2 is 2 × 2 cluster visualization measurement cross sections.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.
Attached drawing 1 show stream of supercritical carbon dioxide it is dynamic-heat transfer rig, including vacuum pump, fluid reservoir, filter,
Plunger pump, casing, vacuum tank, nitrogen cylinder, mass flowmenter, preheating section, test section, plate heat exchanger, counterbalance valve and water cooling unit,
The stainless steel tube that each section is all made of that internal diameter is 12mm in addition to test section is welded to connect.Vacuum pump is connected with liquid storage upper end,
Effect is the gaseous impurity pumped in circuit, provides required vacuum environment before injecting carbon dioxide；Fluid reservoir is through filter
It is connected with plunger pump, the working fluid is divided into two branches of bypass and main road after boosting in plunger pump, bypass is directly connected to storage
Flow container, effect are main road flows needed for adjusting test；Main road is successively connected with mass flowmenter, preheating section and test section.
Test section outlet fluid enters plate heat exchanger entrance, after carbon dioxide is cooling in plate heat exchanger, then is depressured by counterbalance valve
Return to fluid reservoir.The plate heat exchanger on casing and main road in bypass is connected with cooling-water machine, be provided on main road vacuum tank and
Nitrogen cylinder, the pressure oscillation to regulating system.
Test section is made of four stainless steel tubes, wherein the centre of a stainless steel tube is made of transparent quartz glass tube,
Four stainless steel tubes constitute the dense cluster of 2 × 2 quadrate arrays；The diameter of four root canals is 9.5mm, and tube center distance is
12.6mm, test segment length are 600mm；Four root canals are trapped among center by a rectangular all-transparent quartz glass side chamber, and overcritical two
Carbonoxide flows in the channel that four root canals and quartz glass side's chamber are constituted；The two sides of transparency silica glass side's chamber are disposed with stainless
Steel shoe, baffle are respectively provided with the slit that width is 0.5mm.
Experimental bench system design pressure is 12MPa, maximum stream flow 600kg/h, heating power 30kW.Experiment process is such as
Under: the supercritical carbon dioxide in fluid reservoir enters plunger pump after being filtered, and enters developmental tube under plunger pump driving
Road.Wherein, a part of fluid flows back to fluid reservoir by bypassing, and the main function of this branch is the flow that control enters main road；It is surplus
Remaining fluid enters main road, flows into preheating section after first passing around mass flow meter measurement, reaches after absorbing the heat of AC electric-heating
To set temperature.Fluid enters test section after flowing out preheating section, this part is to pay close attention to object, needs to measure its temperature, pressure
Power and velocity field etc..Supercritical carbon dioxide rejects heat in plate heat exchanger cold first after test section outflow
But then water flows back to fluid reservoir after back pressure valve regulation, complete a circulation.Vacuum pump in figure is mainly used in absorption circuit
Gas, before injecting carbon dioxide provide a vacuum environment；Vacuum tank and nitrogen cylinder are used to maintain and adjust entire system
The pressure of system；The casing of the mainly cooling bypass of the effect of cooling-water machine and the plate heat exchanger of main road.
Test working medium is CO2, critical pressure 7.38MPa, critical-temperature is 31.3 DEG C.Working medium flows through 2 vertically upward
× 2 cluster test sections.Preheating section is heated using alternating current, obtains the different temperatures of test section entrance.Test section is not added
Heat, to eliminate the steering crossing current that flow channel cross-section is likely to occur.The armour that the inlet and outlet fluid temperature (F.T.) of test section is 1mm by outer diameter
Thermocouple measurement, inlet pressure and test section resistance is filled to be measured by high-precision Rosemount pressure, differential pressure pickup.With grain
The hollow glass ball that 5 μm of diameter is as trace particle, using the flow field of PIV measurement test section visualization portion, according to auto-correlation original
Reason, post-processes image using software, finally obtains the physical index that related turbulent flow hands over mixed coefficient.
Test process is a forced circulation, and stream of supercritical carbon dioxide is divided under the driving of plunger pump after filter
Two-way.Fluid reservoir is returned to by bypass all the way, another way enters preheating section after flowing through mass flowmenter.Preheating section is an alternating current
Heating system, effect are heated fluid to obtain the temperature and pressure of setting.After stream of supercritical carbon dioxide goes out preheating section
Into test section, flowing and the mixed characteristic of friendship are measured by PIV, and plate type heat exchanger is cooling later, enters fluid reservoir, completes one
A circulation.
Attached drawing 2 show PIV measuring system arrangement schematic diagram.When measuring the velocity field of see-through section using PIV, sheet laser
Stick gap is incident on parallel cluster direction.Sheet laser is 0.5mm by the width opened up on the opaque baffle in test section two sides
Slit be injected into test section, high-speed camera with incident direction in 90 degree direction acquire test section in flow field.It is logical
The VELOCITY DISTRIBUTION of analysis viewable area is crossed, turbulent flow is calculated with the root mean square and average velocity of axes of lateral fluctuation velocity and is handed over
Mixed coefficient, and then analyze the mixed rule of the friendship between subchannel.In addition, test intended designs two incoming positions.When laser beam A is from slit
When incident, the friendship that can obtain central subchannel and side wall subchannel mixes situation；When laser beam B is from slit incidence, can obtain
Friendship to side wall subchannel and silver coin channel mixes characteristic.In this way, can further compare subchannel type to the shadow for handing over mixed rule
It rings.The turbulent flow that this measurement method can obtain a certain plane to the maximum extent hands over mixed characteristic, breaches the limitation of spot measurement
Property.
The utility model has the following characteristics that (1) uses plunger pump to provide high pressure for system in structure, and maximum pressure can
Up to 20MPa, and conventional separator pump or metering pump is used to be extremely difficult to this stress level；(2) it is disposed with casing in bypass, bypassed
Heat caused by throttling can be taken away by casing and cooling-water machine, avoid this partial heat from entering fluid reservoir, influence system pressure；
(3) main road completely eliminates plunger pump and brings come systems stabilisation pressure by the way of the combination of vacuum tank, nitrogen cylinder and counterbalance valve
Influence to system pressure of pressure oscillation and supercritical carbon dioxide variable density；(4) test section is designed using all-transparent, more
The flow behavior of supercritical carbon dioxide easily between observation cluster；(5) two side arrangements of test section have a stainless steel shoe, on baffle
It is provided with the slit that width is 0.5mm, this design can accurately guarantee the incident width of laser light sheet and be incident in test section
Position.
Claims (6)
1. a kind of supercritical carbon dioxide visualization measurement test-bed, including fluid reservoir, filter, plunger pump, voltage-stablizer, matter
Measure flowmeter, preheating section, test section, plate heat exchanger, vacuum pump and cooling-water machine, it is characterised in that: vacuum pump and fluid reservoir
Top connection, the liquid storage pot bottom are connected with filter, and the filter other end is connected with plunger pump；The plunger pump
Outlet is divided into two branches of bypass and main road, and the bypass is equipped with control valve and casing, the other end of described sleeve pipe with it is described
The side of fluid reservoir is connected；Vacuum tank and nitrogen cylinder are sequentially arranged on the main road, the two is connected by stainless steel tube；The master
Road is connect with mass flowmenter, and the mass flowmenter is connect with preheating section, and the preheating section is connected with test section；The test
The outlet of section is connected with plate heat exchanger, and the plate heat exchanger is connect with counterbalance valve, the counterbalance valve and the fluid reservoir side
Face connection；Water cooling unit is connect with described sleeve pipe and the plate heat exchanger respectively.
2. a kind of supercritical carbon dioxide visualization measurement test-bed according to claim 1, it is characterised in that: described
Test section forms the dense cluster of 2 × 2 quadrate arrays by four stainless steel tubes, wherein a stainless steel tube middle section is by transparent
Quartz glass tube is constituted.
3. a kind of supercritical carbon dioxide visualization measurement test-bed according to claim 1, it is characterised in that: described
Outside side's chamber of test section is made of the quartz glass of four sides all-transparent.
4. a kind of supercritical carbon dioxide visualization measurement test-bed according to claim 3, it is characterised in that: described
Outside side chamber two sides are provided with the slit that 2 width are 0.5mm.
5. a kind of supercritical carbon dioxide visualization measurement test-bed according to claim 1, it is characterised in that: described
Preheating section is an AC electric-heating system, and effect is heated fluid to obtain the temperature and pressure of setting.
6. a kind of supercritical carbon dioxide visualization measurement test-bed according to claim 2, it is characterised in that: described
The diameter of four stainless steel tubes is 9.5mm, and tube center distance 12.6mm, test segment length is 600mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820614262.0U CN208187683U (en) | 2018-04-27 | 2018-04-27 | Supercritical carbon dioxide visualization measurement test-bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820614262.0U CN208187683U (en) | 2018-04-27 | 2018-04-27 | Supercritical carbon dioxide visualization measurement test-bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208187683U true CN208187683U (en) | 2018-12-04 |
Family
ID=64431154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820614262.0U Expired - Fee Related CN208187683U (en) | 2018-04-27 | 2018-04-27 | Supercritical carbon dioxide visualization measurement test-bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208187683U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855676A (en) * | 2018-12-07 | 2019-06-07 | 中国科学院力学研究所 | A kind of high parameter supercritical CO2The test macro and method of flowing and heat transfer characteristic |
| CN110044647A (en) * | 2019-04-23 | 2019-07-23 | 湖南文理学院 | A kind of supercritical carbon dioxide printed circuit board performance testing device of heat exchanger |
| CN110779951A (en) * | 2019-11-12 | 2020-02-11 | 南京理工大学 | Experimental system for supercritical water and carbon dioxide mixed working medium heat transfer |
| CN110926755A (en) * | 2019-12-03 | 2020-03-27 | 中国科学院近代物理研究所 | Visual test system |
| CN111754848A (en) * | 2020-08-18 | 2020-10-09 | 西安交通大学 | Experimental device and method for researching flow heat exchange characteristic of ultrahigh-temperature rare gas |
| CN112213355A (en) * | 2020-10-26 | 2021-01-12 | 大连理工大学 | Supercritical carbon dioxide visual flow heat transfer experiment system |
| CN114813830A (en) * | 2022-04-27 | 2022-07-29 | 四川大学 | Supercritical carbon dioxide thermal experimental device with closed loop and open loop and method |
| CN116013558A (en) * | 2023-01-17 | 2023-04-25 | 中国核动力研究设计院 | Dual super nuclear power system and nuclear energy utilization method |
-
2018
- 2018-04-27 CN CN201820614262.0U patent/CN208187683U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855676A (en) * | 2018-12-07 | 2019-06-07 | 中国科学院力学研究所 | A kind of high parameter supercritical CO2The test macro and method of flowing and heat transfer characteristic |
| CN110044647A (en) * | 2019-04-23 | 2019-07-23 | 湖南文理学院 | A kind of supercritical carbon dioxide printed circuit board performance testing device of heat exchanger |
| CN110779951A (en) * | 2019-11-12 | 2020-02-11 | 南京理工大学 | Experimental system for supercritical water and carbon dioxide mixed working medium heat transfer |
| CN110779951B (en) * | 2019-11-12 | 2022-04-22 | 南京理工大学 | Experimental system for supercritical water and carbon dioxide mixed working medium heat transfer |
| CN110926755A (en) * | 2019-12-03 | 2020-03-27 | 中国科学院近代物理研究所 | Visual test system |
| CN110926755B (en) * | 2019-12-03 | 2021-11-16 | 中国科学院近代物理研究所 | Visual test system |
| CN111754848A (en) * | 2020-08-18 | 2020-10-09 | 西安交通大学 | Experimental device and method for researching flow heat exchange characteristic of ultrahigh-temperature rare gas |
| CN111754848B (en) * | 2020-08-18 | 2021-11-09 | 西安交通大学 | Experimental device and method for researching flow heat exchange characteristic of ultrahigh-temperature rare gas |
| CN112213355A (en) * | 2020-10-26 | 2021-01-12 | 大连理工大学 | Supercritical carbon dioxide visual flow heat transfer experiment system |
| CN114813830A (en) * | 2022-04-27 | 2022-07-29 | 四川大学 | Supercritical carbon dioxide thermal experimental device with closed loop and open loop and method |
| CN116013558A (en) * | 2023-01-17 | 2023-04-25 | 中国核动力研究设计院 | Dual super nuclear power system and nuclear energy utilization method |
| CN116013558B (en) * | 2023-01-17 | 2024-04-05 | 中国核动力研究设计院 | Dual super nuclear power system and nuclear energy utilization method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208187683U (en) | Supercritical carbon dioxide visualization measurement test-bed | |
| CN103698102B (en) | A kind of interbank High Temperature High Pressure vehicle repair major flow pattern experimental provision and discrimination method | |
| CN105067661B (en) | Gas liquid exchanger heat transfer coefficient determining device | |
| CN107562155A (en) | A kind of liquid-cooled suit business device and its flow-measuring method | |
| CN104966536A (en) | High-temperature working medium heat exchange test system using heat conducting oil as hot fluid and test method | |
| CN102323293B (en) | Measuring device for heat conductivity coefficient and convective heat transfer coefficient of nanofluid | |
| CN104458204B (en) | Testing and measuring system for unstable-state flow heat transfer visualization research | |
| CN103592142A (en) | System for testing heat transfer and resistance characteristics of large-size generating equipment heat exchanger | |
| Lee et al. | An experimental investigation on turbulent flow mixing in a simulated 3× 3 dual-cooled annular fuel bundle using particle image velocimetry | |
| CN104316115A (en) | Method for measuring pipeline flow by use of pipeline pressure drop | |
| Xu et al. | Interfacial characteristics of steam jet condensation in subcooled water pipe flow–An experimental and numerical study | |
| CN107607580A (en) | Additional ultrasound-enhanced complicated micro lubricative pores array microchannel boiling heat transfer experiment system | |
| Liu et al. | Transient heat transfer for forced flow of helium gas along a horizontal plate with different widths | |
| CN103217454B (en) | Fiber bragg grating measurement method for cylindrical structure thermal diffusivity | |
| CN109524137A (en) | A kind of nuclear reactor engineering magnitude bilayer Bath Heat-Transfer characteristic test system and method | |
| Alvandifar et al. | Experimental study of partially metal foam wrapped tube bundles | |
| Pabbisetty et al. | Effect of blowing ratio on mist-assisted air film cooling of a flat plate: An experimental study | |
| CN112614602B (en) | Modeling experiment system and method for stirring characteristics of outlet impact jet flow of sodium-cooled fast reactor core | |
| CN105784257B (en) | A kind of minor diameter ball bed high-temperature helium pressure drop measuring device and method | |
| CN104368407B (en) | Multiaspect visualization flowing heating experimental device | |
| Christensen et al. | Measurement of heat transfer inside a channel using external infrared thermography | |
| CN105841917A (en) | Supersonic flow field total pressure measurement device and measurement method thereof | |
| CN205719474U (en) | Supercritical water narrow passage Natural Circulation experimental provision | |
| CN106680006B (en) | A kind of fission shell-and-tube exhaust-heat boiler experimental system and experimental method | |
| US20220208404A1 (en) | Experimental Facility and Method for Studying Jet Impact Characteristics at Core Outlet of Fast Reactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |