CN106837769B - A kind of lead bismuth alloy airlift pump circulation ability experimental system and its experimental method - Google Patents
A kind of lead bismuth alloy airlift pump circulation ability experimental system and its experimental method Download PDFInfo
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- CN106837769B CN106837769B CN201710041306.5A CN201710041306A CN106837769B CN 106837769 B CN106837769 B CN 106837769B CN 201710041306 A CN201710041306 A CN 201710041306A CN 106837769 B CN106837769 B CN 106837769B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
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Abstract
A kind of lead bismuth alloy airlift pump circulation ability experimental system and experimental method, the system includes the lead bismuth alloy storage fusing module being made of lead bismuth alloy holding vessel, level probe, valve and the pipeline that is connected in lead bismuth experimental loop, the gas module being made of argon bottle, flowmeter, pressure gauge, valve and the pipeline that is connected on lead bismuth alloy holding vessel and experimental section, the electromagnetic flowmeter demarcating module being made of electromagnetic flowmeter, verification cylinder, level probe, valve, the experiment module being made of air injection pipe, experimental section, measuring instrumentss；After lead bismuth alloy melts in holding vessel, by argon gas by lead bismuth alloy micro-indentation test circuit, the lead bismuth alloy in circuit passes sequentially through verification cylinder, descending branch, electromagnetic flowmeter, horizontal segment, experimental section, gas-liquid separation section, forms a closed cycle；The present invention also provides the experimental methods of the system；Present system can bear higher temperature operating mode and ensure that lead bismuth alloy steady-cycle in stable state under big flow state is run, while can accomplish simple and efficient regulating system parameter again.
Description
Technical field
The invention belongs to the subcritical reactor thermal-hydraulic replication experiment studying technological domains of Accelerator driven, specifically
It is related to a kind of lead bismuth alloy airlift pump circulation ability experimental system and its experimental method.
Background technology
(such as tungsten, lead bismuth close the high energy proton that accelerator-driven sub-critical system (ADS) accelerator accelerates with weight target nucleus
Gold) spallation reaction occurs, spallation reaction can generate tens neutrons caused by a proton, use the neutron that spallation generates in
Component drives subcritical system, so that subcritical system is maintained chain reaction to obtain energy and to utilize extra neutron multiplication
Nuclear material and transmuting nuclear waste.In the subcritical system of Accelerator driven, the spallation target material studied at present is mainly solid tungsten
Particle and lead bismuth alloy, wherein for lead bismuth alloy as in the reactor of spallation target, lead bismuth alloy is also the coolant of reactor.
Lead bismuth alloy has good thermal expansivity, therefore has significant Natural Circulation energy by the reactor of coolant of lead bismuth alloy
Power, this can improve safety of the reactor under accident conditions.Meanwhile in the ADS design phases, airlift pump is used for replacement machine
Tool pump driving lead bismuth alloy circulates.But the gas-liquid two-phase correlative study of heavy metal and gas is very deficient, it is therefore, right
The research of lead bismuth alloy hot-working hydraulic characteristic is extremely important.
Lead bismuth alloy airlift pump circulation experiment system, promotion of the lead bismuth alloy in airlift pump mainly in research ADS systems
Circulation ability under effect obtains the relationship of lead bismuth alloy mass flow and volumetric flow of gas, and it is hollow to obtain experimental section
Steep the distribution of share.Gas is required to be directly injected into experimental section in this experiment, experimental system running temperature is higher, needs to test
Regulating power of the system with complete heating, the system configuration of gas injection and stabilization.
Domestic and international existing lead bismuth alloy circuit all concentrates on the research in terms of natural-circulation capacity, oxygen control and corrosion, and
Study the experimental loop of airlift pump circulation ability not yet.Chinese patent application CN201310285049.1 discloses a kind of lead bismuth
Alloy natural convection loop system, the system mainly have studied lead bismuth alloy natural-circulation capacity caused by the temperature difference.
Invention content
The purpose of the present invention is be directed to above-mentioned experimental provision and system to be not suitable for or be unsatisfactory for lead bismuth alloy bubble pump circulation
The research of ability, provides a kind of lead bismuth alloy airlift pump circulation ability experimental system and experimental method, present system can
Under higher temperature operating mode and ensure bubble Safety Injection and discharge state under stable operation, while can accomplish again simple and quick
Regulating system parameter, can accurately obtain the experiments such as a large amount of lead bismuth flow, gas flow, temperature and void fraction ginseng
Number, can further investigate the two-phase properties of flow of gas-heavy metal.
In order to achieve the above object, the present invention adopts the following technical scheme that：
A kind of lead bismuth alloy airlift pump circulation ability experimental system, including the first high pressure argon gas tank 8, the second high pressure argon gas tank
9, the thermal type gas quality flow meter 201 in 9 downstream line of the first high pressure argon gas tank 8 and the second high pressure argon gas tank, heating type gas
Pressure sensor 601 in 201 downstream line of mass flowmenter, the first valve (401) at 601 downstream of pressure sensor,
Two valves 402, third valve 403 and the 4th valve 404, the first valve (401), the second valve 402, third valve 403 and
Four valves 404 are connected in parallel, and respectively experimental loop provides argon gas, measures the pressure in argon flow amount, monitoring gas piping, adjusts
Save flowing into position and adjusting the flow of argon gas, the composition described above gas module of system for argon gas, the module main function be to
Argon gas is provided in circuit；
The experimental loop of lead bismuth by lead bismuth alloy store, fusing module, electromagnetic flowmeter demarcating module, gas be discharged module and
It tests root module and pipeline composition, the composition of each module is as follows：
Lead bismuth alloy holding vessel 3, the first level probe 701 on lead bismuth alloy holding vessel 3 and the second liquid level are visited
Needle 702, the 5th valve 405 being mounted in 3 bottom pipe of lead bismuth alloy holding vessel, the 5th valve 405 pass through pipeline and lead bismuth
Experimental loop is connected to, and forms lead bismuth alloy storage, the fusing module of system；It is wound with heater strip on lead bismuth alloy holding vessel 3, is led to
Cross the heat melts lead bismuth alloy of heater strip generation；
Electromagnetic flowmeter 202, the verification cylinder 10 of 202 upstream of electromagnetic flowmeter verify the third level probe in cylinder 10
703, the 4th level probe 704, the 5th level probe 705, the 6th level probe 706, the 7th level probe 707, the 5th valve
405, their effect is to measure lead bismuth alloy volume flow, the volume for measuring lead bismuth alloy, the liquid for monitoring lead bismuth alloy respectively
Position, control lead bismuth alloy flow into the speed of holding vessel, have collectively constituted the electromagnetic flowmeter demarcating module of system, the module above
Main function be calibration electromagnetic flowmeter；
Gas-liquid separation chamber 5, the verification cylinder 10 being connect with gas-liquid separation chamber, the 7th valve that verification cylinder top is connected by pipeline
Door 407 collectively constitutes the gas discharge module of system；
First gas nozzle 101, the 5th differential pressure pickup 605 of 101 top of first gas nozzle installation；Second gas is sprayed
Mouth 102, the 4th differential pressure pickup 604 of 102 top of second gas nozzle installation；Third gas nozzle 102, third gas nozzle
The third differential pressure pickup 603 of 103 tops installation；Sensor, gas nozzle and pipeline described above form the experimental section of system
Module；
The first valve 401 in gas module is connected with lead bismuth alloy holding vessel 3, the installation of 3 top of lead bismuth alloy holding vessel
Pipeline and the 6th valve 406 and lead bismuth alloy storage, fusing module, gas module collectively constitute lead bismuth alloy filling mould
Block；
Second valve, 402 downstream line is by 101 loading test section of first gas nozzle, 403 downstream tube of third valve
Road is by the way that in 102 loading test section of second gas nozzle, 404 downstream line of the 4th valve is inserted by third gas nozzle 103
In experimental section, gas injection module is collectively constituted with gas module above.
The experiment root module overall length 3550mm, experimental section arrange three gas injection nozzles altogether, and first gas nozzle 101 is away from liquid
Identity distance is equipped with a pressure guiding pipe, away from first from for 3000mm on the position away from the outlet of first gas nozzle 101 top 100mm
Another pressure guiding pipe is installed on the position of the outlet of gas nozzle 101 top 1050mm, this two pressure guiding pipes pass through flanged joint
To the both ends of the 5th differential pressure pickup 605, arrangement armoured thermocouple monitors lead bismuth alloy in pressure guiding pipe on two pressure guiding pipes
Temperature, exporting installation on the position of lower part 50mm away from first gas nozzle 101, there are one the armoured thermocouples being inserted into pipeline to come
Measure the temperature of lead bismuth alloy in lead bismuth experimental loop；Second gas nozzle 102 is 2050mm away from liquid level distance, away from second gas
A pressure guiding pipe is installed on the position of the outlet of nozzle 102 top 100mm, top 1050mm is exported away from second gas nozzle 102
Position on another pressure guiding pipe is installed, this two pressure guiding pipes by flanged joint to the both ends of the 4th differential pressure pickup 604,
Armoured thermocouple is arranged on two pressure guiding pipes to monitor the temperature of lead bismuth alloy in pressure guiding pipe, is exported away from second gas nozzle 102
There are one the armoured thermocouples being inserted into pipeline to measure lead bismuth alloy in lead bismuth experimental loop for installation on the position of lower part 50mm
Temperature；Third gas nozzle 103 is 1100mm away from liquid level distance, and the position of top 100mm is exported away from third gas nozzle 103
On a pressure guiding pipe is installed, away from third gas nozzle 103 export top 1050mm position on another pressure guiding pipe is installed,
This two pressure guiding pipes arrange armoured thermocouple by flanged joint to the both ends of third differential pressure pickup 603 on two pressure guiding pipes
The temperature of lead bismuth alloy in pressure guiding pipe is monitored, exporting installation on the position of lower part 50mm away from nozzle 103, there are one be inserted into pipeline
Interior armoured thermocouple measures the temperature of lead bismuth alloy in lead bismuth experimental loop；All thermocouples and pressure arranged on experimental section
Force snesor and differential pressure pickup are connected to by collection plate on signal processor, and the measurement acquisition module of system is formed.
Each module and pipe surface of the lead bismuth experimental loop are wound with heater strip, to testing back when for starting experiment
Road is preheated, and experiment carries out thermal compensation when carrying out.
Each module and pipe surface of lead bismuth experimental loop are coated with insulating layer, and insulating layer includes each module and pipe surface
Silicate aluminum board clad, the glass wool cloth being wrapped in outside silicate aluminum board clad, the aluminium-foil paper being pasted onto outside glass wool cloth；Institute
The average thickness for stating silicate aluminum board clad is more than 100mm.
The experimental method of the lead bismuth alloy airlift pump circulation ability experimental system, is full of in the lead bismuth experimental loop
Argon gas protects lead bismuth alloy, prevents lead bismuth alloy from being contacted with air and oxidation reaction occurs；
Before being filled with lead bismuth alloy in lead bismuth experimental loop, the heater strip on circuit is powered, to lead bismuth alloy holding vessel 3
Interior lead bismuth alloy heating and make its fusing, and to experimental loop each section preheat；
Until the lead bismuth alloy temperature in lead bismuth alloy holding vessel 3 reaches 200 DEG C, each section of temperature reaches 200 in circuit
DEG C when start, to lead bismuth alloy is injected in lead bismuth experimental loop, to open the first valve 401 and the 5th valve 405, close the second valve
Door 402, third valve 403, the 4th valve 404 and the 6th valve 406 are given inject argon gas in lead bismuth alloy holding vessel 3 later, by
Step improves pressure, lead bismuth alloy is gradually pressed into lead bismuth experimental loop；Until third level probe 703 detects signal,
The 5th valve 405 and the first valve 401 are closed, stops being pressed into lead bismuth alloy into lead bismuth experimental loop, and stops closing to lead bismuth
Gas is injected in golden holding vessel 3；
When carrying out the airlift pump experiment of 101 gas injection of first gas nozzle, the second valve 402 is opened, by adjusting the second valve
The aperture of door 402 adjusts the gas flow of injection experiments section, and the 7th valve 407 is constantly in open state, the first valve
401, the 6th valve 406, the 5th valve 405, third valve 403 and the 4th valve 404 are constantly in closed state；
When carrying out the airlift pump experiment of 102 gas injection of second gas nozzle, third valve 403 is opened, by adjusting third valve
The aperture of door 403 adjusts the gas flow of injection experiments section, and the 7th valve 407 is constantly in open state, the first valve
401, the 6th valve 406, the 5th valve 405, the second valve 402 and the 4th valve 404 are constantly in closed state；
When carrying out the airlift pump experiment of 103 gas injection of third gas nozzle, the 4th valve 404 is opened by adjusting the 4th valve
404 aperture adjusts the gas flow of injection experiments section, and the 7th valve 407 is constantly in open state, the first valve 401,
6th valve 406, the 5th valve 405, the second valve 402 and third valve 403 are constantly in closed state；
Wait for lead bismuth experimental loop steady-state operation open after five minutes measure acquisition module start recording pressure, pressure difference, flow and
The experimental data of fluid temperature (F.T.)；
After experiment, open the 6th valve 406, by the pressure in lead bismuth alloy holding vessel 3 gradually reduce to
0.15MPa closes the 7th valve 407, opens the 5th valve 405, lead bismuth alloy is made slowly to flow back in lead bismuth alloy holding vessel 3；
When the first level probe 701 detects signal, the 5th valve 405 is closed, the first valve 401, the second valve are then turned on
402, third valve 403 and the 4th valve 404, to argon gas is filled in the experimental loop of lead bismuth and lead bismuth alloy holding vessel 3, to prevent
Lead bismuth alloy aoxidizes；When pressure reaches 0.3MPa, all valves are closed, closes and measures acquisition module, cut off the power, experiment knot
Beam.
According to lead bismuth alloy airlift pump circulation ability experimental system provided by the invention and experimental method, with work temperature
Degree is higher, the gas injection feature that flow is adjustable and adjustable range is big.On the system lead bismuth circuit in all pipelines and module
It is disposed with heater strip, blocks circuit after preventing lead bismuth from condensing, lead bismuth alloy is put back in holding vessel after the completion of experiment, improves system
Safety；The system is mainly used in scientific research, and experiment and model supports are provided for the design of ADS.
Description of the drawings
Fig. 1 is the system diagram of experimental system of the present invention.
Fig. 2 is experimental section gas nozzle and differential pressure pickup layout drawing.
Specific implementation mode
The present invention is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, the present invention is a kind of lead bismuth alloy airlift pump circulation ability experimental system, including the first high pressure argon gas
Tank 8, the second high pressure argon gas tank 9, the thermal type gas quality in 9 downstream line of the first high pressure argon gas tank 8 and the second high pressure argon gas tank
Flowmeter 201, the pressure sensor 601 in 201 downstream line of thermal type gas quality flow meter, at 601 downstream of pressure sensor
The first valve 401, the second valve 402, third valve 403 and the 4th valve 404 be connected in parallel, their effect be respectively for
Experimental loop provides argon gas, measures the pressure in argon flow amount, monitoring gas piping, adjusts inflow position and the adjusting argon of argon gas
The flow of gas, the composition described above gas module of system, the module main function are to providing argon gas in circuit.Lead bismuth alloy stores up
Tank 3, the first level probe 701 on lead bismuth alloy holding vessel are deposited, the second level probe 702 is mounted on holding vessel bottom
The 5th valve 405, the 5th valve 405 on portion's pipeline are connected to by pipeline with lead bismuth experimental loop, and the lead bismuth for forming system closes
Gold storage, fusing module；When injecting lead bismuth alloy to lead bismuth circuit, pass through the heater strip wound on lead bismuth alloy holding vessel 3
Lead bismuth alloy is melted, waits in lead bismuth alloy holding vessel 3 that lead bismuth alloy temperature reaches 200 DEG C, each section of temperature reaches in lead bismuth circuit
When to 200 DEG C, valve 401 and valve 405 are opened, closes valve 402, valve 403, valve 404 and valve 406, then gives lead
Argon gas is injected in bismuth alloy holding vessel 3, is stepped up pressure, lead bismuth alloy is gradually pressed into lead bismuth experimental loop.Until
When three level probes 703 detect signal, valve 405 and valve 401 are closed, stops being pressed into the conjunction of lead bismuth into lead bismuth experimental loop
Gold, and stop injecting gas into lead bismuth alloy holding vessel 3.
Electromagnetic flowmeter 202,202 upstream of electromagnetic flowmeter verification cylinder 10, verification cylinder in third level probe 703,
4th level probe 704, the 5th level probe 705, the 6th level probe 706, the 7th level probe 707, the 5th valve 405,
Their effect is to measure lead bismuth alloy volume flow, the volume for measuring lead bismuth alloy, the liquid level for monitoring lead bismuth alloy, control respectively
Lead bismuth alloy processed flows into the speed of holding vessel, has collectively constituted the electromagnetic flowmeter demarcating module of system, the master of the module above
It is calibration electromagnetic flowmeter to act on.When demarcating electromagnetic flowmeter 202, the 6th valve 406 is opened, by lead bismuth alloy holding vessel 3
Interior pressure is decreased to 0.15MPa, closes the 7th valve 407, opens the 4th valve 404, to gas-liquid separation chamber 5 and verification cylinder 10
It is inside filled with argon gas, then opens the 5th valve 405, lead bismuth alloy passes back into lead bismuth alloy holding vessel 3, at this time electromagnetic flowmeter
Voltage signal is generated on 202, by the data collecting module collected signal, by verify the 4th level probe 704 in cylinder 10,
5th level probe 705, the 6th level probe 706 and the 7th level probe 707 measure the volume flow of lead bismuth alloy, by rear
Processing obtains the correspondence of lead bismuth alloy volume flow and electromagnetic flowmeter voltage signal, completes the mark of electromagnetic flowmeter 202
It is fixed.
Second valve, 402 downstream line is by 101 loading test section of first gas nozzle, 403 downstream tube of third valve
Road is by the way that in 102 loading test section of second gas nozzle, 404 downstream line of the 4th valve is inserted by third gas nozzle 103
In experimental section, gas injection module is collectively constituted with gas module above, the main function of the module is to give lead bismuth experimental loop
Argon gas is injected, and then lead bismuth alloy is driven to circulate.First gas nozzle 101, the of the installation of 101 top of first gas nozzle
Five differential pressure pickups 605；Second gas nozzle 102, the 4th differential pressure pickup 604 of 102 top of second gas nozzle installation；The
Three gas nozzles 102, the third differential pressure pickup 603 of 103 top of third gas nozzle installation；Sensor and pipeline described above
The experiment root module of composition system.Gas-liquid separation chamber 5, the verification cylinder 10 being connect with gas-liquid separation chamber 5,10 top of verification cylinder pass through
The 7th connected valve 407 of pipeline collectively constitutes the gas discharge module of system.
The experiment root module overall length 3550mm, experimental section arrange three gas injection nozzles altogether, and first gas nozzle 101 is away from liquid
Identity distance is equipped with a pressure guiding pipe, away from first from for 3000mm on the position away from the outlet of first gas nozzle 101 top 100mm
Another pressure guiding pipe is installed on the position of the outlet of gas nozzle 101 top 1050mm, this two pressure guiding pipes pass through flanged joint
To the both ends of the 5th differential pressure pickup 605, arrangement armoured thermocouple monitors lead bismuth alloy in pressure guiding pipe on two pressure guiding pipes
Temperature, exporting installation on the position of lower part 50mm away from first gas nozzle 101, there are one the armoured thermocouples being inserted into pipeline to come
Measure the temperature of lead bismuth alloy in lead bismuth experimental loop；Second gas nozzle 102 is 2050mm away from liquid level distance, away from second gas
A pressure guiding pipe is installed on the position of the outlet of nozzle 102 top 100mm, top 1050mm is exported away from second gas nozzle 102
Position on another pressure guiding pipe is installed, this two pressure guiding pipes by flanged joint to the both ends of the 4th differential pressure pickup 604,
Armoured thermocouple is arranged on two pressure guiding pipes to monitor the temperature of lead bismuth alloy in pressure guiding pipe, is exported away from second gas nozzle 102
There are one the armoured thermocouples being inserted into pipeline to measure lead bismuth alloy in lead bismuth experimental loop for installation on the position of lower part 50mm
Temperature；Third gas nozzle 103 is 1100mm away from liquid level distance, and the position of top 100mm is exported away from third gas nozzle 103
On a pressure guiding pipe is installed, away from third gas nozzle 103 export top 1050mm position on another pressure guiding pipe is installed,
This two pressure guiding pipes arrange armoured thermocouple by flanged joint to the both ends of third differential pressure pickup 603 on two pressure guiding pipes
The temperature of lead bismuth alloy in pressure guiding pipe is monitored, exporting installation on the position of lower part 50mm away from nozzle 103, there are one be inserted into pipeline
Interior armoured thermocouple measures the temperature of lead bismuth alloy in lead bismuth experimental loop；All thermocouples and pressure arranged on experimental section
Force snesor and differential pressure pickup are connected to by collection plate on signal processor, and then are acquired to experimental data.
Each module and pipe surface of lead bismuth experimental loop are wound with heater strip, for start experiment when to experimental loop into
Row preheating, experiment carry out thermal compensation when carrying out.Each module and pipe surface of lead bismuth experimental loop are coated with insulating layer.Insulating layer
Include the silicate aluminum board clad that lead bismuth return surface is fixed on thin wire, the glass being wrapped in outside silicate aluminum board clad
Glass silk cloth, the aluminium-foil paper being pasted onto outside glass wool cloth.The average thickness of the silicate aluminum board clad is more than 100mm.
When carrying out the airlift pump experiment of 101 gas injection of first gas nozzle, the second valve 402 is opened, by adjusting the second valve
The aperture of door 402 adjusts the gas flow of injection experiments section, and the 7th valve 407 is constantly in open state, the first valve
401, the 6th valve 406, the 5th valve 405, third valve 403 and the 4th valve 404 are constantly in closed state.Gas injects
It after experimental section, is flowed up along experimental section, ascent stage vapour-liquid hybrid density is less than descending branch at this time, and driving lead bismuth alloy is in lead
It is circulated in bismuth experimental loop, reality is discharged by the 7th valve 407 in gas-liquid mixture separation, gas in gas-liquid separation chamber 5
Circuit is tested, lead bismuth alloy flows back to lead bismuth experimental loop by descending branch.Pass through third differential pressure pickup 603, the 4th pressure difference sensing
Device 604 and the 5th differential pressure pickup 605 measure each section of pressure difference, and the body of argon gas is measured by thermal type gas quality flow meter 201
Product flow, the volume flow of lead bismuth alloy is measured by electromagnetic flowmeter 202.Carry out the bubble of 102 gas injection of second gas nozzle
Pump experiment is similar with the airlift pump experimentation of 103 gas injection of third gas nozzle.Wait for that lead bismuth experimental loop steady-state operation 5 divides
It is opened after clock and measures acquisition module start recording pressure, the experimental data of pressure difference, flow and fluid temperature (F.T.).
After experiment, open the 6th valve 406, by the pressure in lead bismuth alloy holding vessel 3 gradually reduce to
0.15MPa closes the 7th valve 407, opens the 5th valve 405, lead bismuth alloy is made slowly to flow back in lead bismuth alloy holding vessel 3.
When the first level probe 701 detects signal, the 5th valve 405 is closed.It is then turned on the first valve 401, the second valve
402, third valve 403 and the 4th valve 404, to argon gas is filled in the experimental loop of lead bismuth and lead bismuth alloy holding vessel 3, to prevent
Lead bismuth alloy aoxidizes.When pressure reaches 0.3MPa, all valves are closed, closes and measures acquisition module, cut off the power, experiment knot
Beam.
Claims (5)
1. a kind of lead bismuth alloy airlift pump circulation ability experimental system, it is characterised in that：Including the first high pressure argon gas tank (8),
Two high pressure argon gas tanks (9), the thermal type gas quality on the first high pressure argon gas tank (8) and second high pressure argon gas tank (9) downstream line
Flowmeter (201), the pressure sensor (601) in thermal type gas quality flow meter (201) downstream line, pressure sensor
(601) the first valve (401) at downstream, the second valve (402), third valve (403) and the 4th valve (404), the first valve
Door (401), the second valve (402), third valve (403) and the 4th valve (404) are connected in parallel, and respectively experimental loop provides
Argon gas measures argon flow amount, monitors the pressure in gas piping, adjusts the flow for flowing into position and adjusting argon gas of argon gas, with
On constitute the gas module of system, which is to providing argon gas in circuit；
The experimental loop of lead bismuth is stored by lead bismuth alloy, melts module, electromagnetic flowmeter demarcating module, and module and experiment is discharged in gas
Root module and pipeline composition, the composition of each module are as follows：
Lead bismuth alloy holding vessel (3), the first level probe (701) being mounted on lead bismuth alloy holding vessel (3) and the second liquid level
Probe (702), the 5th valve (405) being mounted in lead bismuth alloy holding vessel (3) bottom pipe, the 5th valve (405) pass through
Pipeline is connected to lead bismuth experimental loop, forms lead bismuth alloy storage, the fusing module of system；Lead bismuth alloy holding vessel twines on (3)
It is wound with heater strip, the heat melts lead bismuth alloy generated by heater strip；
Electromagnetic flowmeter (202), the verification cylinder (10) of electromagnetic flowmeter (202) upstream, the third liquid level verified in cylinder (10) are visited
Needle (703), the 4th level probe (704), the 5th level probe (705), the 6th level probe (706), the 7th level probe
(707), the 5th valve (405), their effect be respectively measure lead bismuth alloy volume flow, the volume for measuring lead bismuth alloy,
The liquid level of lead bismuth alloy, the speed of control lead bismuth alloy inflow holding vessel are monitored, has collectively constituted the Electromagnetic Flow of system above
Demarcating module is counted, the main function of the module is calibration electromagnetic flowmeter；
Gas-liquid separation chamber (5), the verification cylinder (10) being connect with gas-liquid separation chamber (5), verification cylinder (10) top are connected by pipeline
The 7th valve (407) collectively constitute system gas discharge module；First gas nozzle (101), first gas nozzle (101)
5th differential pressure pickup (605) of top installation；Second gas nozzle (102), the of the installation of second gas nozzle (102) top
Four differential pressure pickups (604)；Third gas nozzle (102), the third differential pressure pickup of third gas nozzle (103) top installation
(603)；Sensor, gas nozzle and pipeline described above form the experiment root module of system；
The first valve (401) in gas module is connected with lead bismuth alloy holding vessel (3), lead bismuth alloy holding vessel (3) top peace
The pipeline of dress and the storage of the 6th valve (406) and lead bismuth alloy, fusing module, gas module collectively constitute lead bismuth alloy filling
Module；
Second valve (402) downstream line is by first gas nozzle (101) loading test section, third valve (403) downstream
Pipeline is by the way that in second gas nozzle (102) loading test section, the 4th valve (404) downstream line passes through third gas nozzle
(103) in loading test section, gas injection module is collectively constituted with gas module above.
2. lead bismuth alloy airlift pump circulation ability experimental system according to claim 1, it is characterised in that：The experimental section
Module overall length 3550mm, experimental section arrange that three gas injection nozzles, first gas nozzle (101) are 3000mm away from liquid level distance altogether,
It is exported away from first gas nozzle (101) and a pressure guiding pipe is installed on the position of top 100mm, away from first gas nozzle (101)
It exports and another pressure guiding pipe is installed on the position of top 1050mm, this two pressure guiding pipes are passed by flanged joint to the 5th pressure difference
The both ends of sensor (605), arrangement armoured thermocouple monitors the temperature of lead bismuth alloy in pressure guiding pipe on two pressure guiding pipes, away from first
There are one the armoured thermocouples being inserted into pipeline to measure lead bismuth reality for installation on the position of gas nozzle (101) outlet lower part 50mm
Test the temperature of lead bismuth alloy in circuit；Second gas nozzle (102) is 2050mm away from liquid level distance, away from second gas nozzle
(102) pressure guiding pipe is installed on the position of outlet top 100mm, top 1050mm is exported away from second gas nozzle (102)
Position on another pressure guiding pipe is installed, this two pressure guiding pipes pass through flanged joint to the two of the 4th differential pressure pickup (604)
It holds, armoured thermocouple is arranged on two pressure guiding pipes to monitor the temperature of lead bismuth alloy in pressure guiding pipe, away from second gas nozzle (102)
Exporting installation on the position of lower part 50mm, there are one the armoured thermocouples being inserted into pipeline to measure lead bismuth in lead bismuth experimental loop
The temperature of alloy；Third gas nozzle (103) is 1100mm away from liquid level distance, and top is exported away from third gas nozzle (103)
A piece pressure guiding pipe is installed on the position of 100mm, exports away from third gas nozzle (103) and is equipped on the position of top 1050mm
Another pressure guiding pipe, this two pressure guiding pipes are by flanged joint to the both ends of third differential pressure pickup (603), on two pressure guiding pipes
Armoured thermocouple is arranged to monitor the temperature of lead bismuth alloy in pressure guiding pipe, exports away from nozzle (103) and pacifies on the position of lower part 50mm
There are one the armoured thermocouples being inserted into pipeline for dress to measure the temperature of lead bismuth alloy in lead bismuth experimental loop；It is arranged on experimental section
All thermocouples and pressure sensor and differential pressure pickup be connected on signal processor by collection plate, form system
Measurement acquisition module.
3. lead bismuth alloy airlift pump circulation ability experimental system according to claim 1, it is characterised in that：The lead bismuth is real
Each module and pipe surface for testing circuit are wound with heater strip, for start experiment when experimental loop is preheated, test into
Thermal compensation is carried out when row.
4. lead bismuth alloy airlift pump circulation ability experimental system according to claim 1, it is characterised in that：Lead bismuth is tested back
Each module and pipe surface on road are coated with insulating layer, and insulating layer includes the silicate aluminum board clad of each module and pipe surface,
The glass wool cloth being wrapped in outside silicate aluminum board clad, the aluminium-foil paper being pasted onto outside glass wool cloth；The silicate aluminum board clad
Average thickness be more than 100mm.
5. the experimental method of Claims 1-4 any one of them lead bismuth alloy airlift pump circulation ability experimental system, feature
It is：Lead bismuth alloy is protected full of argon gas in the lead bismuth experimental loop, prevents lead bismuth alloy from contacting and sending out with air
Raw oxidation reaction；
Before being filled with lead bismuth alloy in lead bismuth experimental loop, the heater strip on circuit is powered, in lead bismuth alloy holding vessel (3)
Lead bismuth alloy heating and make its fusing, and to experimental loop each section preheat；
Until the lead bismuth alloy temperature in lead bismuth alloy holding vessel (3) reaches 200 DEG C, each section of temperature reaches 200 DEG C in circuit
When start, to lead bismuth alloy is injected in lead bismuth experimental loop, to open the first valve (401) and the 5th valve (405), closing second
Valve (402), third valve (403), the 4th valve (404) and the 6th valve (406) give lead bismuth alloy holding vessel (3) later
Interior injection argon gas, steps up pressure, lead bismuth alloy is gradually pressed into lead bismuth experimental loop；Until third level probe
(703) when detecting signal, the 5th valve (405) and the first valve (401) is closed, stops being pressed into lead into lead bismuth experimental loop
Bismuth alloy, and stop injecting gas into lead bismuth alloy holding vessel (3)；
When carrying out the airlift pump experiment of first gas nozzle (101) gas injection, the second valve (402) is opened, by adjusting the second valve
The aperture of door (402) adjusts the gas flow of injection experiments section, and the 7th valve (407) is constantly in open state, the first valve
Door (401), the 6th valve (406), the 5th valve (405), third valve (403) and the 4th valve (404) are constantly in closing
State；
When carrying out the airlift pump experiment of second gas nozzle (102) gas injection, third valve (403) is opened, by adjusting third valve
The aperture of door (403) adjusts the gas flow of injection experiments section, and the 7th valve (407) is constantly in open state, the first valve
Door (401), the 6th valve (406), the 5th valve (405), the second valve (402) and the 4th valve (404) are constantly in closing
State；
When carrying out the airlift pump experiment of third gas nozzle (103) gas injection, the 4th valve (404) is opened by adjusting the 4th valve
(404) aperture adjusts the gas flow of injection experiments section, and the 7th valve (407) is constantly in open state, the first valve
(401), the 6th valve (406), the 5th valve (405), the second valve (402) and third valve (403) are constantly in closing shape
State；
It waits for that lead bismuth experimental loop steady-state operation is opened after five minutes and measures acquisition module start recording pressure, pressure difference, flow and fluid
The experimental data of temperature；
After experiment, open the 6th valve (406), by the pressure in lead bismuth alloy holding vessel (3) gradually reduce to
0.15MPa closes the 7th valve (407), opens the 5th valve (405), lead bismuth alloy is made slowly to flow back to lead bismuth alloy holding vessel
(3) in；When the first level probe (701) detects signal, the 5th valve (405) is closed, the first valve is then turned on
(401), the second valve (402), third valve (403) and the 4th valve (404) are stored to the experimental loop of lead bismuth and lead bismuth alloy
It is filled with argon gas in tank (3), to prevent lead bismuth alloy from aoxidizing；When pressure reaches 0.3MPa, all valves are closed, closes to measure and adopt
Collect module, cuts off the power, experiment terminates.
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| CN110931142A (en) * | 2019-12-11 | 2020-03-27 | 西安交通大学 | Liquid lead bismuth alloy-inert gas two-phase flow vacuole share measuring device and method based on differential pressure method |
| CN113289968B (en) * | 2021-04-07 | 2022-04-12 | 岭东核电有限公司 | Spent fuel assembly treatment equipment and method |
| CN113447631A (en) * | 2021-06-21 | 2021-09-28 | 西安交通大学 | Stainless steel oxidation experimental device and method under trace oxygen partial pressure |
| CN113670979A (en) * | 2021-08-31 | 2021-11-19 | 西安交通大学 | Experimental system and method for researching flow heat transfer characteristics of lead-bismuth alloy under ocean conditions |
| CN114047113A (en) * | 2021-11-12 | 2022-02-15 | 哈尔滨工业大学 | Natural circulation experiment system and experiment method for lead-bismuth alloy |
| CN113984145A (en) * | 2021-11-26 | 2022-01-28 | 华北电力大学 | Calibration platform for liquid lead-bismuth electromagnetic flowmeter and calibration method thereof |
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