CN106837769A - A kind of lead bismuth alloy airlift pump circulation ability experimental system and its experimental technique - Google Patents
A kind of lead bismuth alloy airlift pump circulation ability experimental system and its experimental technique Download PDFInfo
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- CN106837769A CN106837769A CN201710041306.5A CN201710041306A CN106837769A CN 106837769 A CN106837769 A CN 106837769A CN 201710041306 A CN201710041306 A CN 201710041306A CN 106837769 A CN106837769 A CN 106837769A
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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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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
A kind of lead bismuth alloy airlift pump circulation ability experimental system and experimental technique, the system includes the lead bismuth alloy storage fusing module being made up of lead bismuth alloy holding vessel, level probe, valve and the pipeline being connected in lead bismuth experimental loop, the gas module being made up of argon bottle, flowmeter, pressure gauge, valve and the pipeline being connected on lead bismuth alloy holding vessel and experimental section, the electromagnetic flowmeter demarcating module being made up of electromagnetic flowmeter, verification cylinder, level probe, valve, the experiment module being made up of air injection pipe, experimental section, measuring instrumentss；After fusing in holding vessel, by argon gas by lead bismuth alloy micro-indentation test loop, the lead bismuth alloy in loop passes sequentially through verification cylinder, descending branch, electromagnetic flowmeter, horizontal segment, experimental section, gas-liquid separation section to lead bismuth alloy, forms a closed cycle；Present invention also offers the experimental technique of the system；Present system can bear higher temperature operating mode and ensure lead bismuth alloy steady-cycle in stable state operation under big flow state, 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 domain of Accelerator driven, specifically
It is related to a kind of lead bismuth alloy airlift pump circulation ability experimental system and its experimental technique.
Background technology
(such as tungsten, lead bismuth are closed the high energy proton that accelerator-driven sub-critical system (ADS) accelerator accelerates with weight target nucleus
Gold) there is spallation reaction, the spallation reaction that proton causes can produce tens neutrons, and the neutron produced with spallation is in
Component drives subcritical system, subcritical system is maintained chain reaction to obtain energy and to utilize unnecessary neutron multiplication
Nuclear material and transmuting nuclear waste.In the subcritical system of Accelerator driven, the spallation target material of research is mainly solid tungsten at present
Particle and lead bismuth alloy, wherein, used as in the reactor of spallation target, lead bismuth alloy is also the cooling agent of reactor to lead bismuth alloy.
Lead bismuth alloy has a good thermal expansivity, therefore reactor with lead bismuth alloy as cooling agent has significant Natural Circulation energy
Power, this can improve security of the reactor under accident conditions.Meanwhile, in the ADS design phases, airlift pump is used for replacement machine
Tool pump drives circulating for lead bismuth alloy.But heavy metal is very deficient with the gas-liquid two-phase correlative study of gas, therefore, it is right
The research of lead bismuth alloy hot-working hydraulic characteristic is extremely important.
Lifting of the lead bismuth alloy in airlift pump in lead bismuth alloy airlift pump circulation experiment system, mainly research ADS systems
Circulation ability under effect, obtains the relation of lead bismuth alloy mass flow and volumetric flow of gas, and it is hollow to obtain experimental section
Steep the distribution of share.Require that gas is directly injected into experimental section in this experiment, experimental system running temperature is higher, it is necessary to test
System has the regulating power of complete heating, the system configuration of gas injection and stabilization.
Domestic and international existing lead bismuth alloy loop all concentrates on the research in terms of natural-circulation capacity, oxygen control and corrosion, and
The experimental loop for studying airlift pump circulation ability does not have also.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.
The content of the invention
The purpose of the present invention is directed to above-mentioned experimental provision and system does not apply to or be unsatisfactory for lead bismuth alloy bubble pump circulation
The research of ability, there is provided a kind of lead bismuth alloy airlift pump circulation ability experimental system and experimental technique, present system can
Under higher temperature operating mode and ensure stable operation under the Safety Injection and discharge state of bubble, while can accomplish simple and quick again
Regulating system parameter, can accurately obtain substantial amounts of lead bismuth flow, gas flow, temperature and void fraction etc. experiment ginseng
Number, can further investigate to the two-phase properties of flow of gas-heavy metal.
In order to achieve the above object, the present invention is adopted 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 on the first high pressure argon gas tank 8 and the downstream line of the second high pressure argon gas tank 9, heating type gas
Pressure sensor 601 in the downstream line of mass flowmenter 201, the first valve (401), at the downstream of pressure sensor 601
Two valves 402, the 3rd valve 403 and the 4th valve 404, the first valve (401), the second valve 402, the 3rd valve 403 and
Four valves 404 are connected in parallel, and respectively experimental loop provides the pressure in argon gas, measurement argon flow amount, monitoring gas piping, adjusts
The flow for flowing into position and regulation argon gas of section argon gas, the composition described above gas module of system, the module Main Function be to
Argon gas is provided in loop；
The experimental loop of lead bismuth by lead bismuth alloy store, fusing module, electromagnetic flowmeter demarcating module, gas discharge module and
Experiment root module and pipeline composition, the composition of each module are 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
Pin 702, the 5th valve 405, the 5th valve 405 in the bottom pipe of lead bismuth alloy holding vessel 3 pass through pipeline and lead bismuth
Experimental loop is connected, and constitutes lead bismuth alloy storage, the fusing module of system；Heater strip is wound with 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 the upstream of electromagnetic flowmeter 202, the 3rd level probe in verification cylinder 10
703rd, 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 respectively to measure lead bismuth alloy volume flow, the volume of measurement lead bismuth alloy, the liquid of monitoring lead bismuth alloy
Position, control lead bismuth alloy flow into the speed of holding vessel, have more than collectively constituted the electromagnetic flowmeter demarcating module of system, the module
Main Function be demarcate electromagnetic flowmeter；
Gas-liquid separation chamber 5, the verification cylinder 10 being connected 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 that the top of first gas nozzle 101 is installed；Second gas are sprayed
Mouth 102, the 4th differential pressure pickup 604 that the top of second gas nozzle 102 is installed；Third gas nozzle 102, third gas nozzle
The 3rd differential pressure pickup 603 that 103 tops are installed；The above sensor, gas nozzle and pipeline constitute the experimental section of system
Module；
The first valve 401 in gas module is connected with lead bismuth alloy holding vessel 3, and the top of lead bismuth alloy holding vessel 3 is installed
Pipeline and the 6th valve 406, collectively constitute lead bismuth alloy filling module with lead bismuth alloy storage, fusing module, gas module；
The downstream line of second valve 402 passes through in the loading test of first gas nozzle 101 section, the downstream tube of the 3rd valve 403
During road is by the loading test of second gas nozzle 102 section, the downstream line of the 4th valve 404 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 arranges three gas injection nozzles altogether, and first gas nozzle 101 is away from liquid
Identity distance is provided with a pressure guiding pipe, away from the first gas from being 3000m 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 body nozzle 101 top 1050mm, this two pressure guiding pipes are connected to by flange
The two ends of the 5th differential pressure pickup 605, arrange armoured thermocouple to monitor the temperature of lead bismuth alloy in pressure guiding pipe on two pressure guiding pipes
Degree, is provided with the armoured thermocouple in an insertion pipeline to survey on the position away from the outlet of first gas nozzle 101 bottom 50mm
The temperature of lead bismuth alloy in amount lead bismuth experimental loop；Second gas nozzle 102 is 2050mm away from liquid level distance, away from second gas spray
A pressure guiding pipe is installed on the position of the outlet of mouth 102 top 100mm, away from the outlet of second gas nozzle 102 top 1050mm's
Another pressure guiding pipe is installed, this two pressure guiding pipes are connected to the two ends of the 4th differential pressure pickup 604, two by flange on position
Arrange armoured thermocouple on root pressure guiding pipe to monitor the temperature of lead bismuth alloy in pressure guiding pipe, under the outlet of second gas nozzle 102
Armoured thermocouple in one insertion pipeline is installed on the position of portion 50mm to measure lead bismuth alloy in lead bismuth experimental loop
Temperature；Third gas nozzle 103 is 1100mm away from liquid level distance, on the position away from the outlet of third gas nozzle 103 top 100mm
A piece pressure guiding pipe is installed, another pressure guiding pipe is installed on the position away from the outlet of third gas nozzle 103 top 1050mm, this
Two pressure guiding pipes are connected to the two ends of the 3rd differential pressure pickup 603 by flange, and armoured thermocouple is arranged on two pressure guiding pipes
The temperature of lead bismuth alloy in monitoring pressure guiding pipe, is provided with an insertion pipeline on the position away from the outlet of nozzle 103 bottom 50mm
Armoured thermocouple measure the temperature of lead bismuth alloy in lead bismuth experimental loop；The all thermocouples and pressure arranged on experimental section
Sensor and differential pressure pickup are connected on signal processor by collection plate, constitute the measurement acquisition module of system.
Each module and pipe surface of the lead bismuth experimental loop are wound with heater strip, for starting during experiment to testing back
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 heat-insulation layer, and heat-insulation layer includes each module and pipe surface
Silicate aluminum board clad, be wrapped in the glass wool cloth outside silicate aluminum board clad, be pasted onto the aluminium-foil paper outside glass wool cloth；Institute
The average thickness for stating silicate aluminum board clad is more than 100mm.
The experimental technique of described lead bismuth alloy airlift pump circulation ability experimental system, is full of in the lead bismuth experimental loop
Argon gas is protected to lead bismuth alloy, prevents lead bismuth alloy and air contact and oxidation reaction occurs；
Before being filled with lead bismuth alloy in lead bismuth experimental loop, the heater strip on loop is powered, to lead bismuth alloy holding vessel 3
Interior lead bismuth alloy heating and melt it, and to experimental loop each section preheat；
When the lead bismuth alloy temperature in lead bismuth alloy holding vessel 3 reaches 200 DEG C, each section of temperature reaches 200 in loop
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
The 402, the 3rd valve 403 of door, the 4th valve 404 and the 6th valve 406, afterwards to injection argon gas in lead bismuth alloy holding vessel 3, by
Step improves pressure, lead bismuth alloy is progressively pressed into lead bismuth experimental loop；Until the 3rd level probe 703 detects signal,
The 5th valve 405 and the first valve 401 are closed, is stopped to being pressed into lead bismuth alloy in lead bismuth experimental loop, and stop being closed to lead bismuth
Injection gas in golden holding vessel 3；
When the airlift pump for carrying out the gas injection of first gas nozzle 101 is tested, the second valve 402 is opened, by adjusting the second valve
The aperture of door 402 adjusts the gas flow of injection experimentses section, and the 7th valve 407 is constantly in opening, the first valve
401st, the 6th valve 406, the 5th valve 405, the 3rd valve 403 and the 4th valve 404 are constantly in closed mode；
When the airlift pump for carrying out the gas injection of second gas nozzle 102 is tested, the 3rd valve 403 is opened, by adjusting the 3rd valve
The aperture of door 403 adjusts the gas flow of injection experimentses section, and the 7th valve 407 is constantly in opening, the first valve
401st, the 6th valve 406, the 5th valve 405, the second valve 402 and the 4th valve 404 are constantly in closed mode；
When the airlift pump for carrying out the gas injection of third gas nozzle 103 is tested, the 4th valve 404 is opened by adjusting the 4th valve
404 aperture adjusts the gas flow of injection experimentses section, and the 7th valve 407 is constantly in opening, the first valve 401,
6th valve 406, the 5th valve 405, the second valve 402 and the 3rd valve 403 are constantly in closed mode；
After opened after lead bismuth experimental loop steady-state operation 5 minutes measurement acquisition module start recording pressure, pressure difference, flow and
The experimental data of fluid temperature (F.T.)；
After experiment terminates, the 6th valve 406 is opened, the pressure in lead bismuth alloy holding vessel 3 is progressively decreased to
0.15MPa, closes the 7th valve 407, opens the 5th valve 405, lead bismuth alloy is slowly flowed back in lead bismuth alloy holding vessel 3；
When the first level probe 701 detects signal, the 5th valve 405 is closed, be then turned on the first valve 401, the second valve
402nd, the 3rd valve 403 and the 4th valve 404, to argon gas is filled with the experimental loop of lead bismuth and lead bismuth alloy holding vessel 3, to prevent
Lead bismuth alloy is aoxidized；When pressure reaches 0.3MPa, all valves are closed, close measurement acquisition module, cut off the electricity supply, experiment knot
Beam.
The lead bismuth alloy airlift pump circulation ability experimental system and experimental technique provided according to the present invention, it has work temperature
The characteristics of spending higher, gas injects adjustable flow and big adjustable range.On the system lead bismuth loop in all pipelines and module
Heater strip is disposed with, prevents lead bismuth from blocking loop after condensing, lead bismuth alloy is put back in holding vessel after the completion of experiment, improves system
Security；The system is mainly used in scientific research, for the design of ADS provides experiment and model supports.
Brief 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 embodiment
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 on the first high pressure argon gas tank 8 and the downstream line of the second high pressure argon gas tank 9
At pressure sensor 601, the downstream of pressure sensor 601 in flowmeter 201, the downstream line of thermal type gas quality flow meter 201
The first valve 401, the second valve 402, the 3rd valve 403 and the 4th valve 404 be connected in parallel, their effect be respectively for
Experimental loop provides the pressure in argon gas, measurement argon flow amount, monitoring gas piping, adjusts inflow position and the regulation argon of argon gas
The flow of gas, the composition described above gas module of system, the module Main Function is to providing argon gas in loop.Lead bismuth alloy is stored up
Deposit tank 3, the first level probe 701 on lead bismuth alloy holding vessel, the second level probe 702, installed in holding vessel bottom
The 5th valve 405, the 5th valve 405 on portion's pipeline are connected by pipeline with lead bismuth experimental loop, and the lead bismuth for constituting system is closed
Gold storage, fusing module；When lead bismuth alloy is injected to lead bismuth loop, by the heater strip wound on lead bismuth alloy holding vessel 3
Fusing lead bismuth alloy, treats that lead bismuth alloy temperature reaches 200 DEG C in lead bismuth alloy holding vessel 3, and each section of temperature reaches in lead bismuth loop
During to 200 DEG C, valve 401 and valve 405 are opened, valve 402, valve 403, valve 404 and valve 406 are closed, then to lead
Injection argon gas, steps up pressure in bismuth alloy holding vessel 3, lead bismuth alloy is progressively pressed into lead bismuth experimental loop.When
When three level probes 703 detect signal, valve 405 and valve 401 are closed, stop being closed to press-in lead bismuth in lead bismuth experimental loop
Gold, and stop injecting gas in lead bismuth alloy holding vessel 3.
Electromagnetic flowmeter 202, the 3rd level probe 703 verified in cylinder 10, verification cylinder of the upstream of electromagnetic flowmeter 202,
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 respectively to measure lead bismuth alloy volume flow, the volume of measurement lead bismuth alloy, the liquid level of monitoring lead bismuth alloy, control
Lead bismuth alloy processed flows into the speed of holding vessel, has more than collectively constituted the electromagnetic flowmeter demarcating module of system, the master of the module
Act on is to demarcate electromagnetic flowmeter.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
Argon gas is inside filled with, the 5th valve 405 is then opened, lead bismuth alloy is passed back into lead bismuth alloy holding vessel 3, now electromagnetic flowmeter
Voltage signal is produced 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
Treatment, obtains the corresponding relation of lead bismuth alloy volume flow and electromagnetic flowmeter voltage signal, completes the mark of electromagnetic flowmeter 202
It is fixed.
The downstream line of second valve 402 passes through in the loading test of first gas nozzle 101 section, the downstream tube of the 3rd valve 403
During road is by the loading test of second gas nozzle 102 section, the downstream line of the 4th valve 404 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
Injection argon gas, and then drive lead bismuth alloy to circulate.First gas nozzle 101, the top of first gas nozzle 101 install the
Five differential pressure pickups 605；Second gas nozzle 102, the 4th differential pressure pickup 604 that the top of second gas nozzle 102 is installed；The
Three gas nozzles 102, the 3rd differential pressure pickup 603 that the top of third gas nozzle 103 is installed；The above sensor and pipeline
The experiment root module of composition system.Gas-liquid separation chamber 5, the verification cylinder 10 being connected with gas-liquid separation chamber 5, verification cylinder 10 top passes 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 arranges three gas injection nozzles altogether, and first gas nozzle 101 is away from liquid
Identity distance is provided with a pressure guiding pipe, away from the first gas from being 3000m 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 body nozzle 101 top 1050mm, this two pressure guiding pipes are connected to by flange
The two ends of the 5th differential pressure pickup 605, arrange armoured thermocouple to monitor the temperature of lead bismuth alloy in pressure guiding pipe on two pressure guiding pipes
Degree, is provided with the armoured thermocouple in an insertion pipeline to survey on the position away from the outlet of first gas nozzle 101 bottom 50mm
The temperature of lead bismuth alloy in amount lead bismuth experimental loop；Second gas nozzle 102 is 2050mm away from liquid level distance, away from second gas spray
A pressure guiding pipe is installed on the position of the outlet of mouth 102 top 100mm, away from the outlet of second gas nozzle 102 top 1050mm's
Another pressure guiding pipe is installed, this two pressure guiding pipes are connected to the two ends of the 4th differential pressure pickup 604, two by flange on position
Arrange armoured thermocouple on root pressure guiding pipe to monitor the temperature of lead bismuth alloy in pressure guiding pipe, under the outlet of second gas nozzle 102
Armoured thermocouple in one insertion pipeline is installed on the position of portion 50mm to measure lead bismuth alloy in lead bismuth experimental loop
Temperature；Third gas nozzle 103 is 1100mm away from liquid level distance, on the position away from the outlet of third gas nozzle 103 top 100mm
A piece pressure guiding pipe is installed, another pressure guiding pipe is installed on the position away from the outlet of third gas nozzle 103 top 1050mm, this
Two pressure guiding pipes are connected to the two ends of the 3rd differential pressure pickup 603 by flange, and armoured thermocouple is arranged on two pressure guiding pipes
The temperature of lead bismuth alloy in monitoring pressure guiding pipe, is provided with an insertion pipeline on the position away from the outlet of nozzle 103 bottom 50mm
Armoured thermocouple measure the temperature of lead bismuth alloy in lead bismuth experimental loop；The all thermocouples and pressure arranged on experimental section
Sensor and differential pressure pickup are connected on signal processor by collection plate, and then experimental data is acquired.
Each module and pipe surface of lead bismuth experimental loop are wound with heater strip, for starting to enter experimental loop during experiment
Row preheating, experiment carries out thermal compensation when carrying out.Each module and pipe surface of lead bismuth experimental loop are coated with heat-insulation layer.Heat-insulation layer
Silicate aluminum board clad including being fixed on lead bismuth return surface with thin wire, is wrapped in the glass outside silicate aluminum board clad
Glass silk cloth, is pasted onto the aluminium-foil paper outside glass wool cloth.The average thickness of the silicate aluminum board clad is more than 100mm.
When the airlift pump for carrying out the gas injection of first gas nozzle 101 is tested, the second valve 402 is opened, by adjusting the second valve
The aperture of door 402 adjusts the gas flow of injection experimentses section, and the 7th valve 407 is constantly in opening, the first valve
401st, the 6th valve 406, the 5th valve 405, the 3rd valve 403 and the 4th valve 404 are constantly in closed mode.Gas injects
After experimental section, flowed up along experimental section, now ascent stage vapour-liquid hybrid density is less than descending branch, drive lead bismuth alloy in lead
Circulated in bismuth experimental loop, gas-liquid mixture is separated in gas-liquid separation chamber 5, gas discharges reality by the 7th valve 407
Loop is tested, lead bismuth alloy flows back to lead bismuth experimental loop by descending branch.By the 3rd differential pressure pickup 603, the 4th pressure difference sensing
The differential pressure pickup 605 of device 604 and the 5th measures 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 the gas injection of second gas nozzle 102
Pump experiment is similar with the airlift pump experimentation of the gas injection of third gas nozzle 103.Treat 5 points of lead bismuth experimental loop steady-state operation
The experimental data of measurement acquisition module start recording pressure, pressure difference, flow and fluid temperature (F.T.) is opened after clock.
After experiment terminates, the 6th valve 406 is opened, the pressure in lead bismuth alloy holding vessel 3 is progressively decreased to
0.15MPa, closes the 7th valve 407, opens the 5th valve 405, lead bismuth alloy is slowly flowed 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
402nd, the 3rd valve 403 and the 4th valve 404, to argon gas is filled with the experimental loop of lead bismuth and lead bismuth alloy holding vessel 3, to prevent
Lead bismuth alloy is aoxidized.When pressure reaches 0.3MPa, all valves are closed, close measurement acquisition module, cut off the electricity supply, 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), the 3rd valve (403) and the 4th valve (404), the first valve
Door (401), the second valve (402), the 3rd valve (403) and the 4th valve (404) are connected in parallel, and respectively experimental loop is provided
Pressure in argon gas, measurement argon flow amount, monitoring gas piping, the flow for flowing into position and regulation argon gas of regulation argon gas, with
On constitute the gas module of system, the module Main Function is to providing argon gas in loop；
The experimental loop of lead bismuth is stored by lead bismuth alloy, fusing module, electromagnetic flowmeter demarcating module, gas discharge module and experiment
Root module and pipeline are constituted, and 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
Probe (702), the 5th valve (405), the 5th valve (405) in lead bismuth alloy holding vessel (3) bottom pipe pass through
Pipeline is connected with lead bismuth experimental loop, constitutes lead bismuth alloy storage, the fusing module of system；Lead bismuth alloy holding vessel is twined on (3)
Heater strip is wound with, the heat melts lead bismuth alloy produced by heater strip；
Electromagnetic flowmeter (202), verification cylinder (10) of electromagnetic flowmeter (202) upstream, the 3rd liquid level in verification cylinder (10) is visited
Pin (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 of measurement lead bismuth alloy,
The speed that the liquid level of lead bismuth alloy, control lead bismuth alloy flow into holding vessel is monitored, the Electromagnetic Flow of system has more than been collectively constituted
Meter demarcating module, the Main Function of the module is to demarcate electromagnetic flowmeter；
Gas-liquid separation chamber (5), verification cylinder (10) being connected with gas-liquid separation chamber (5), verification cylinder (10) top is connected by pipeline
The 7th valve (407) collectively constitute system gas discharge module；First gas nozzle (101), first gas nozzle (101)
The 5th differential pressure pickup (605) that top is installed；Second gas nozzle (102), second gas nozzle (102) top install the
Four differential pressure pickups (604)；Third gas nozzle (102), the 3rd differential pressure pickup that third gas nozzle (103) top is installed
(603)；The above sensor, gas nozzle and pipeline constitute 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 6th valve (406), collectively constitute lead bismuth alloy and fill with lead bismuth alloy storage, fusing module, gas module
Module；
Second valve (402) downstream line passes through in first gas nozzle (101) loading test section, the 3rd valve (403) downstream
During pipeline is by 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 arranges three gas injection nozzles altogether, and first gas nozzle (101) is 3000m away from liquid level distance, away from
A pressure guiding pipe is installed on the position of first gas nozzle (101) outlet top 100mm, is gone out away from first gas nozzle (101)
Another pressure guiding pipe is installed on the position of mouth top 1050mm, this two pressure guiding pipes are connected to the 5th pressure difference sensing by flange
The two ends of device (605), arrange armoured thermocouple to monitor the temperature of lead bismuth alloy in pressure guiding pipe, away from the first gas on two pressure guiding pipes
The armoured thermocouple in an insertion pipeline is installed on the position of body nozzle (101) outlet bottom 50mm to measure the experiment of lead bismuth
The temperature of lead bismuth alloy in loop；Second gas nozzle (102) is 2050mm away from liquid level distance, away from second gas nozzle (102)
A pressure guiding pipe is installed on the position for exporting top 100mm, the position of top 1050mm is exported away from second gas nozzle (102)
On another pressure guiding pipe is installed, this two pressure guiding pipes are connected to the two ends of the 4th differential pressure pickup (604), two by flange
Arrange armoured thermocouple on pressure guiding pipe to monitor the temperature of lead bismuth alloy in pressure guiding pipe, under second gas nozzle (102) outlet
Armoured thermocouple in one insertion pipeline is installed on the position of portion 50mm to measure lead bismuth alloy in lead bismuth experimental loop
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)
Put and a pressure guiding pipe is installed, being provided with another on the position away from third gas nozzle (103) outlet top 1050mm draws
Pressure pipe, this two pressure guiding pipes are connected to the two ends of the 3rd differential pressure pickup (603) by flange, and armouring is arranged on two pressure guiding pipes
Thermocouple monitors the temperature of lead bismuth alloy in pressure guiding pipe, on the position away from nozzle (103) outlet bottom 50mm is provided with one
The armoured thermocouple in pipeline is inserted to measure the temperature of lead bismuth alloy in lead bismuth experimental loop；The all heat arranged on experimental section
Galvanic couple and pressure sensor and differential pressure pickup are connected on signal processor by collection plate, and the measurement for constituting system is adopted
Collection module.
3. lead bismuth alloy airlift pump circulation ability experimental system according to claim 1, it is characterised in that：The lead bismuth reality
Each module and pipe surface for testing loop are wound with heater strip, for start experiment when experimental loop is preheated, test into
Thermal compensation is carried out during 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 heat-insulation layer, and heat-insulation layer includes the silicate aluminum board clad of each module and pipe surface,
The glass wool cloth outside silicate aluminum board clad is wrapped in, the aluminium-foil paper outside glass wool cloth is pasted onto；The silicate aluminum board clad
Average thickness be more than 100mm.
5. the experimental technique of the lead bismuth alloy airlift pump circulation ability experimental system described in any one of Claims 1-4, its feature
It is：Lead bismuth alloy is protected full of argon gas in the lead bismuth experimental loop, prevents lead bismuth alloy from being sent out with air contact
Raw oxidation reaction；
Before being filled with lead bismuth alloy in lead bismuth experimental loop, the heater strip on loop is powered, in lead bismuth alloy holding vessel (3)
Lead bismuth alloy heating and melt it, and to experimental loop each section preheat；
When 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 loop
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), the 3rd valve (403), the 4th valve (404) and the 6th valve (406), give lead bismuth alloy holding vessel (3) afterwards
Interior injection argon gas, steps up pressure, lead bismuth alloy is progressively pressed into lead bismuth experimental loop；When the 3rd level probe
(703) when detecting signal, the 5th valve (405) and the first valve (401) are closed, stops being pressed into lead in lead bismuth experimental loop
Bismuth alloy, and stop to injection gas in lead bismuth alloy holding vessel (3)；
When the airlift pump for carrying out first gas nozzle (101) gas injection is tested, the second valve (402) is opened, by adjusting the second valve
The aperture of door (402) adjusts the gas flow of injection experimentses section, and the 7th valve (407) is constantly in opening, the first valve
Door (401), the 6th valve (406), the 5th valve (405), the 3rd valve (403) and the 4th valve (404) are constantly in closing
State；
When the airlift pump for carrying out second gas nozzle (102) gas injection is tested, the 3rd valve (403) is opened, by adjusting the 3rd valve
The aperture of door (403) adjusts the gas flow of injection experimentses section, and the 7th valve (407) is constantly in opening, 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 the airlift pump for carrying out third gas nozzle (103) gas injection is tested, the 4th valve (404) is opened by adjusting the 4th valve
(404) aperture adjusts the gas flow of injection experimentses section, and the 7th valve (407) is constantly in opening, the first valve
(401), the 6th valve (406), the 5th valve (405), the second valve (402) and the 3rd valve (403) are constantly in closing shape
State；
After opening measurement acquisition module start recording pressure, pressure difference, flow and fluid after lead bismuth experimental loop steady-state operation 5 minutes
The experimental data of temperature；
After experiment terminates, the 6th valve (406) is opened, the pressure in lead bismuth alloy holding vessel (3) is progressively decreased to
0.15MPa, closes the 7th valve (407), opens the 5th valve (405), lead bismuth alloy is slowly flowed back to lead bismuth alloy holding vessel
(3) in；When the first level probe (701) detects signal, the 5th valve (405) is closed, be then turned on the first valve
(401), the second valve (402), the 3rd valve (403) and the 4th valve (404), store to the experimental loop of lead bismuth and lead bismuth alloy
Argon gas is filled with tank (3), to prevent lead bismuth alloy from aoxidizing；When pressure reaches 0.3MPa, all valves are closed, close measurement and adopt
Collection module, cuts off the electricity supply, and 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 |
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