CN104535292B - Cryogenic liquid cavitation experimental device - Google Patents
Cryogenic liquid cavitation experimental device Download PDFInfo
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- CN104535292B CN104535292B CN201510004702.1A CN201510004702A CN104535292B CN 104535292 B CN104535292 B CN 104535292B CN 201510004702 A CN201510004702 A CN 201510004702A CN 104535292 B CN104535292 B CN 104535292B
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Abstract
The invention belongs to the technical fields of fluid machinery engineering, cryogenic engineering and aerospace engineering and relates to cavitation experimental devices, in particular to a cryogenic liquid cavitation experimental device. The cryogenic liquid cavitation experimental device comprises a testing segment part, a pressure-regulating tank part and an auxiliary device part. Different from a traditional cavitation experimental device, the cryogenic liquid cavitation experimental device is characterized in that pressure and temperature adjustment is performed on the experimented cryogenic liquid through pressure control, and flowing adjustment is performed through pressure difference between a supply tank part and a collection tank part. The device can achieve synchronous collection of images, pressure data, temperature data and flow data of a cryogenic liquid cavitation flow field, and is good in experiment effect and high in safety; in addition, experiment equipment is easy and portable, convenient to disassemble and carry, small in occupied space and capable of saving experiment area.
Description
Technical field
A kind of the present invention relates to cavitation experimental provision, more particularly to cryogenic liquid cavitation experimental provision.Belong to fluid machinery
Engineering, cryogenic engineering and space technology field.
Background technology
When the liquid internal local pressure of uniform temperature is reduced to hold-up vapour pressure, vaporization phenomenon can be produced, together
When the gas that is dissolved in liquid can also separate out, form steam bubble (also known as cavity, hole), when steam bubble with liquid flow movement to pressure compared with
After where height, the steam regelation in bubble, steam bubble are crumbled and fall.Cavity Emergence and Development, the process for crumbling and fall in this liquid stream,
And resulting series of physical and chemical change process are referred to as cavitation.Cavitation is frequently can lead under machine efficiency
The problems such as dropping and cause vibration, noise and material surface to destroy, can make machine cisco unity malfunction when serious.
Under normal circumstances, standard atmosphere pressure low boiling point can be with the element or compound and their mixture of 120K
Referred to as cryogenic fluid, common cryogenic liquid have liquid helium, liquid hydrogen, liquid oxygen, liquid nitrogen, liquefied natural gas etc..Due to cryogenic liquid
Special material property, its cavitation and this complicated physical and chemical process of cavitating flows are always the research heat of association area
Point.Under normal temperature and pressure, easily absorbing heat after cryogenic liquid and air contact phase transformation makes the water vapour in container surroundings air freeze,
Vessel surface is covered in, this brings many difficult problems to the cavitation experimentation of cryogenic liquid.
On the basis of traditional cavitation experimental provision, improved cryogenic liquid cavitation experimental provision needs annular water hole etc. big
Type equipment, needs a high-power cryopump to realize liquid circulation, and the equipment of experiment and other auxiliary device are more, can only often adopt
Cryogenic liquid heat absorption phase transformation is prevented with the mode of parcel heat-barrier material.There is following some deficiency in such experimental facilitiess：1st, account for
Ground area is big, and input cost is more, and operation and maintenance is costly；2nd, experimental facilitiess and construction are complicated, need to such as carry out other types reality
Test, it has not been convenient to change test section, and be difficult to change flow media；3rd, heat-insulated difference, is not easily achieved visual inspection, affects cavitation reality
Effect 4, experimental provision dynamic regulation ability is tested, and it is immovable；5th, poor stability, once there is experimental provision rupture, it is low
Geothermal liquid is gushed out, and easily experimenter is damaged；6th, during use, cryogenic liquid consumption is big, causes more resources
Waste and noise, waste pollution.
The content of the invention
The invention aims to overcome the defect of prior art, the Cavitation flows of Different hypothermia liquid are carried out in scientific research
It is dynamic to show and information of flow collection, there is provided a kind of cryogenic liquid cavitation experimental provision.
The present invention is achieved through the following technical solutions.
A kind of cryogenic liquid cavitation experimental provision, overall point of quinquepartite：Charging-tank part, test section part, collecting tank
Partly, compensator part, auxiliary equipment part.
Charging-tank part is used for storing and providing cryogenic liquid, and the pressure and temperature of cryogenic liquid can be adjusted；Bag
Include charging-tank outer housing, charging-tank inner bag, charging-tank vacuum interface, filter connector, filter, charging-tank sealing ring, charging-tank
Sensor interface, charging-tank pressurizing valve, charging-tank relief valve, the horizontal liquidometer of charging-tank, charging-tank longitudinal direction liquidometer, connection are closed
System：Support is welded with charging-tank outer housing, and supply tank bracket is bolted with leg of test rig, charging-tank is fixed on
On leg of test rig；Charging-tank outer housing bottom is provided with charging-tank vacuum interface, and charging-tank vacuum interface passes through pipeline and second
Vacuum pump connects, and in experimentation, the second vacuum pump persistently takes out pressure, it is ensured that be defined between charging-tank outer housing and charging-tank inner bag true
Dummy status (2-5Pa)；Cover on upper end to realize being tightly connected by ring flange outside charging-tank inner bag and charging-tank, charging-tank inner bag hangs
Hang over inside charging-tank outer housing；Charging-tank inner bag top is provided with pressurization mouth, pressure modulating opening and charging-tank sensor interface, charging-tank
Inner bag bottom is provided with test section water inlet, and charging-tank inner bag is internally provided with the horizontal liquidometer of charging-tank and charging-tank longitudinal direction liquid
Position meter；Charging-tank inner bag pressurization mouth passes through pipeline and is connected from pressure and low-temperature liquid Dewar, cryogenic liquid can be injected charging-tank
Interior, after charging liquid at low-temperature is finished, charging-tank inner bag pressurization mouth is connected with the first high pressure nitrogen steel cylinder by pipeline, is set on pipeline
There are charging-tank pressurizing valve and charging-tank relief valve, for improving the pressure in charging-tank inner bag, and ensure that pressure is not high in inner bag
In 2 atmospheric pressure, inner bag and the rupture of Visualization section is prevented；Charging-tank inner bag pressure modulating opening is adjusted with compensator first by pipeline
Pressure mouth connection, pipeline is provided with charging-tank pressure regulator valve, for reducing the pressure in charging-tank inner bag；Charging-tank longitudinal direction liquidometer is used
In measure experimental provision horizontal positioned when charging-tank inner bag in liquid volume, the horizontal liquidometer of charging-tank be used for measure experiment dress
Putting after turn over clockwise and turning 90 degrees, when vertically placing in charging-tank inner bag liquid volume, in order to experimental implementation；Charging-tank inner bag
Pressure and temperature sensor is provided with inside, for measuring the pressure and temperature of cryogenic liquid in tank, sensor lead is passed from charging-tank
Sensor interface is drawn；The test section water inlet of charging-tank inner bag is connected with filter by filter connector, and filter passes through method
Orchid is connected with turbine flowmeter, prevents impurity from entering turbine flowmeter and Visualization section；It is close equipped with charging-tank on filter
Seal.
Collecting tank part flows through the cryogenic liquid of test section part for storage, and the pressure and temperature of cryogenic liquid can be entered
Row is adjusted；Connect including collecting tank outer housing, collecting tank inner bag, collecting tank vacuum interface, collecting tank sealing ring, collecting tank sensor
Mouth, collecting tank pressurizing valve, collecting tank relief valve, the horizontal liquidometer of collecting tank, collecting tank longitudinal direction liquidometer, annexation：Collect
Support being welded with tank outer housing, tank bracket being collected and is bolted with leg of test rig, collecting tank is fixed on into experiment dress
Put on support；Collecting tank outer housing bottom is provided with collecting tank vacuum interface, and collecting tank vacuum interface passes through pipeline and the second vacuum pump
Connection, in experimentation, the second vacuum pump persistently takes out pressure, it is ensured that be defined between collecting tank outer housing and collecting tank inner bag vacuum state
(2-5Pa)；Cover on upper end to realize being tightly connected by ring flange outside collecting tank inner bag and collecting tank, collecting tank inner bag is suspended on receipts
Inside collection tank outer housing；Collecting tank inner bag top is provided with pressurization mouth, pressure modulating opening and collecting tank sensor interface, under collecting tank inner bag
Portion is provided with test section outlet, and collecting tank inner bag is internally provided with the horizontal liquidometer of collecting tank and collecting tank longitudinal direction liquidometer；
Collecting tank inner bag pressurization mouth is connected with the second high pressure nitrogen steel cylinder by pipeline, and pipeline is provided with collecting tank pressurizing valve and collecting tank
Relief valve, for improving the pressure in collecting tank inner bag, and ensures that pressure is not higher than 2 atmospheric pressure in inner bag, prevent inner bag and
Visualization section ruptures；Collecting tank inner bag pressure modulating opening is connected with the second pressure modulating opening of compensator by pipeline, and pipeline is provided with receipts
Collection tank pressure regulator valve, for reducing the pressure in collecting tank inner bag；Collecting tank longitudinal direction liquidometer is put for measuring experimental provision level
When putting in collecting tank inner bag liquid volume, the horizontal liquidometer of collecting tank is used for measuring after experimental provision turns over clockwise and turn 90 degrees,
When vertically placing in collecting tank inner bag liquid volume, in order to experimental implementation；Pressure and temperature biography is provided with collecting tank inner bag
Sensor, for measuring the pressure and temperature of cryogenic liquid in tank, sensor lead is drawn from collecting tank sensor interface；Collecting tank
The test section outlet of inner bag is connected with pilot control valve by flange；Install at the test section outlet pipeline of collecting tank inner bag
There is collecting tank sealing ring.
Volume of the volume of the collecting tank inner bag more than the charging-tank inner bag.
Test section part is used on or off experiment, carries out visual inspection and experimental data collection；Including turbine flow
Gauge, corrugated tube, Visualization section outer housing, test section vacuum interface, pilot control valve, Visualization section, visualization examination
Test a section inlet sensor installing hole, Visualization section aditus laryngis sensor mounting hole, test section vacuum chamber, annexation：Turbine
Effusion meter, Visualization section and pilot control valve are sequentially connected by pipeline, and Visualization section is replaceable so as to carrying out which
The cavitation experiment of his geometry；Visualization section periphery is provided with Visualization section outer housing, Visualization section outer housing
Visualization section is played a supportive role, Visualization section outer housing is secured by bolts in test section support；Visualization
Four transparent observing windows are furnished with section outer housing, for testing visual observation, Visualization section outer housing front end and corrugated tube
It is connected by screw, corrugated tube is used for adapting to thermal deformation caused by pipeline internal-external temperature difference, Visualization section outer housing surrounding dividing plate
Between be evenly equipped with rubber seal, using screw seal, form test section between Visualization section outer housing and Visualization section
Vacuum chamber, offers test section vacuum interface, and test section vacuum interface is connected with the second vacuum pump by pipeline, in experimentation
Second vacuum pump persistently takes out pressure, it is ensured that be defined between Visualization section outer housing and Visualization section vacuum state (2-5Pa)；
Visualization section inlet sensor installing hole is provided with below Visualization section and Visualization section aditus laryngis sensor is installed
Hole, for installing pressure and temperature sensor, by sensor acquisition Visualization section entrance non-cavitating region and visualization
The information of flow of test section aditus laryngis cavitation generation area.
Preferably, the Visualization section throat height h is the 0.01- that Visualization section goes out (enter) open height H
0.08。
In the Visualization section and Visualization section outer housing, transparent observing window adopts transparent material；
The Visualization section adopts quartz glass；On the Visualization section outer housing, transparent observing window is using tree
Fat glass；
Compensator part is used for quickly reducing charging-tank inner bag and the pressure in collecting tank inner bag；Including collecting tank pressure regulation
Valve, breather valve, vacuum pump control valve, compensator, charging-tank pressure regulator valve, annexation：Offer the first tune on compensator respectively
Press mouth, the second pressure modulating opening, take out pressure mouth and blow vent, the first pressure modulating opening of compensator is connected with charging-tank inner bag pressure modulating opening by pipeline
Connect, pipeline is provided with charging-tank pressure regulator valve；The second pressure modulating opening of compensator is connected with collecting tank inner bag pressure modulating opening by pipeline, pipeline
It is provided with collecting tank pressure regulator valve；Compensator is taken out pressure mouth and is connected with the first vacuum pump by pipeline, and pipeline is provided with vacuum pump control
Valve, the first vacuum pump are used for reducing the pressure in compensator；Compensator blow vent passes through pipeline and atmosphere, and pipeline is provided with
Pressure regulation pressure inside the tank can be reverted to an atmospheric pressure by breather valve, compensator blow vent, while can be used for emptying experimental provision
Interior cryogenic liquid.
Annexation：Charging-tank part and collecting tank part are secured by bolts in leg of test rig, Visualization
Section outer housing bolt is fixed on test section support, and test section support is secured by bolts in leg of test rig, leg of test rig
Ensure that experimental provision is in horizontality, swivel bearing can realize the integral-rotation of experimental provision, realized by alignment pin real
Experiment device entirety dextrorotation turn 90 degrees；Turbine flowmeter is connected to test section part by flange, flows into for measurement in real time
The flow of the cryogenic liquid of Visualization section；Cold light source is provided with by Visualization section outer housing, for Visualization Duan Zhao
It is bright, and as few as possible cause heat radiation, light source controller to be used for controlling light source opening and closing and adjust the intensity of light source；Visualization
High-speed camera is provided with by section outer housing, for shooting the cavitation image in Visualization section；In charging-tank inner bag and collecting tank
In gallbladder, at Visualization section inlet sensor installing hole and Visualization section aditus laryngis sensor mounting hole, pressure is mounted on
Force transducer and temperature sensor, for the pressure and temperature in measurement apparatus and in Visualization section；Data collecting instrument is used
In the data of collection pressure transducer, temperature sensor and turbine flowmeter；Computer is used for controlling high-speed camera and data
The pressure of cavitation image and relevant position in Acquisition Instrument synchronous acquisition Visualization section, temperature and data on flows, and will figure
Picture and data are stored.
The test section water inlet of charging-tank inner bag is connected by pipeline with turbine flowmeter；Pilot control valve by pipeline with
The test section outlet connection of collecting tank inner bag；Charging-tank vacuum interface, collecting tank vacuum interface and test section vacuum interface are equal
It is connected with the second vacuum pump by pipeline, before cryogenic liquid adds experimental provision, the second vacuum pump persistently takes out pressure, it is ensured that corresponding positions
Quasi- vacuum state (2-5Pa) is set to, in process of the test, will also ensure that relevant position is defined vacuum state, experimental provision is without vacuum chamber
The position for wrapping up and having cryogenic liquid to flow, is wrapped up using heat-barrier material, to prevent cryogenic liquid heat absorption vaporization.
Specific work process is as follows：
Ensure before experiment that all valves are in closed mode, the second vacuum pumping pressure of operation by charging-tank outer housing, receive
Pressure in collection tank outer housing and in Visualization section outer housing is reduced to 2-5Pa, and continuous service takes out pressure；Disconnect the first high pressure nitrogen
Steel cylinder and the connection of charging-tank pressurizing valve, will be connected with charging-tank pressurizing valve from pressure and low-temperature liquid Dewar, open controlling test
Valve, collecting tank pressure regulator valve and breather valve, open charging-tank pressurizing valve, open Dewar valve, and the cryogenic liquid in Dewar will be certainly
Pressure charging system drives lower inflow experimental provision, initially enters charging-tank inner bag, then flows into through Visualization section part and receives
Collection tank inner bag, after charging liquid at low-temperature is finished, closes Dewar valve, charging-tank pressurizing valve, collecting tank pressure regulator valve and breather valve；It is disconnected
Open from pressure and low-temperature liquid Dewar and be connected with charging-tank pressurizing valve, by the first high pressure nitrogen steel cylinder and the company of charging-tank pressurizing valve
Connect；Vacuum pump control valve is opened, the first vacuum pump is run, the pressure in compensator is reduced to into 2-5Pa, close vacuum pump control
Valve, stops the first vacuum pump；By swivel bearing rotation test device, cryogenic liquid is made in charging-tank inner bag and collecting tank inner bag
Between flow back and forth, make the temperature of whole device reach unanimity, experimental provision be placed in into horizontality then, it is solid by alignment pin
It is fixed；Tank pressure regulator valve is turned supply on, the pressure in charging-tank inner bag is reduced rapidly, the cryogenic liquid in collecting tank inner bag is made in pressure reduction
With lower inflow charging-tank inner bag, when the cryogenic liquid in collecting tank inner bag has flowed soon, pilot control valve is closed, close charging-tank
Pressure regulator valve, is full of cryogenic liquid in need to ensureing the pipeline of Visualization section and test section part；Through aforesaid operations, compensator
Interior pressure can be raised, and using the same manner, open vacuum pump control valve, run the first vacuum pump, by the pressure in compensator
2-5Pa is reduced to, vacuum pump control valve is closed, stops the first vacuum pump；If opening the first high pressure nitrogen cylinder valve, turn supply on
Tank pressurizing valve, in charging-tank inner bag, the pressure of cryogenic liquid drastically can be raised, and temperature can also be increased；If turning supply on tank tune
Pressure valve, in charging-tank inner bag, the pressure of cryogenic liquid can be drastically reduced, and temperature can also be decreased；Therefore can be according to experiment need
Ask, adjust the pressure and temperature of cryogenic liquid in charging-tank inner bag, corresponding control valve is closed in regulation after finishing, opened and collected
Tank pressure regulator valve, reduces the pressure in collecting tank inner bag, forms pressure reduction, be then shut off collecting tank pressure regulation before and after making pilot control valve
Valve；Light-source controller controls cold light source is opened, and adjusts the position and angle for adjusting high-speed camera to suitable sources intensity,
The cryogenic liquid in Visualization section can clearly be photographed；Pilot control valve is opened, experiment starts immediately, in charging-tank
Cryogenic liquid in gallbladder will flow to collecting tank inner bag through test section part, cryogenic liquid flow velocity at the Visualization section aditus laryngis
Reach highest, reduced pressure, when the reduced pressure saturated vapor pressure of cryogenic liquid at such a temperature, cryogenic liquid is in visualization
There is cavitation phenomenon at test section aditus laryngis and aditus laryngis downstream, in cryogenic liquid flowing and cavitation processes, turbine flowmeter will be surveyed
Amount cryogenic liquid inlet flow rate, the pressure transducer and temperature sensor at Visualization section inlet sensor installing hole will be surveyed
The pressure and temperature of amount Visualization section porch cryogenic liquid, the pressure at Visualization section aditus laryngis sensor mounting hole
Sensor and temperature sensor will measure the pressure and temperature of cavitation zone at Visualization section aditus laryngis, in charging-tank inner bag
Pressure transducer and temperature sensor will measure the change of pressure and temperature in charging-tank inner bag, and the pressure in collecting tank inner bag is passed
Sensor and temperature sensor will be the data for measuring the change of pressure and temperature in collecting tank inner bag, all the sensors and effusion meter equal
Gathered and be stored in computer by data collecting instrument, high-speed camera will shoot cavitation zone at Visualization section aditus laryngis
Image, is then store in computer, and all measurement data and the picture for shooting are synchro measure；Test control in experimentation
Pressure differential before and after valve processed is gradually reduced, and cryogenic liquid flow velocity is gradually lowered, and cavitation phenomenon can close test after stopping occurring
Control valve, and suspend data acquisition, thus complete an experimental observation；
The valve of the second high pressure nitrogen steel cylinder after the completion of experimental observation, is opened, collecting tank pressurizing valve is opened, will be collected
Pressure rise in tank inner bag, closes collecting tank pressurizing valve, closes the valve of the second high pressure nitrogen steel cylinder；Turn supply on tank pressure regulation
Valve, by the reduced pressure in charging-tank inner bag, makes the pressure in charging-tank inner bag less than the pressure in collecting tank inner bag；Open examination
Control valve is tested, the cryogenic liquid in collecting tank inner bag will flow back to charging-tank inner bag, when the cryogenic liquid in collecting tank inner bag flows soon
When complete, pilot control valve is closed；The pressure and temperature of cryogenic liquid in charging-tank inner bag is readjusted by the way, again
The pressure of cryogenic liquid in collecting tank inner bag is adjusted, the experiment condition of setting is reached；Open pilot control valve, you can carry out new one
Secondary experimental observation.
Have cryogenic liquid vaporizer loss in experimentation unavoidably, if the amount of cryogenic liquid is not enough to complete once to test,
Cryogenic liquid is filled using above-mentioned the same manner into device then.
Experimental provision can be turn 90 degrees by axle center dextrorotation of swivel bearing, then fill experiment by positioning finger setting
Put in vertical state；Observation to cryogenic liquid cavitation phenomenon is completed using same way.
After the completion of experiment, the second vacuum pump is closed, disconnect the second vacuum pump and connect with charging-tank vacuum interface, collecting tank vacuum
The connection of mouth and test section vacuum interface, connects charging-tank inner bag, collecting tank inner bag and Visualization Duan Junyu surrounding airs
Touch, the heat absorption vaporization of cryogenic liquid in Acceleration study device；Open pilot control valve, collecting tank pressure regulator valve, charging-tank pressure regulator valve
With vacuum pump control valve, the first vacuum pump is run, the gas in device device can be detached, all emptying is until cryogenic liquid
Only, after cryogenic liquid emptying, stop the first vacuum pump, close all valves, thus complete experiment.
Carried out by flange between other service pipes and connected.Visualization section is also connected for flange with pipeline, dismounting
It is convenient, test section used by this being unloaded when other cavitation test sections experiments are carried out, other test sections are installed again.
Beneficial effect
1st, a kind of cryogenic liquid cavitation experimental provision of the invention, different from traditional cavitation experimental facilitiess, experimental facilitiess
Simply, light, easy to disassemble and carrying takes up room little, saves practice ground.
2nd, a kind of cryogenic liquid cavitation experimental provision of the invention, using vacuum heat-insulation, effectively anti-leak-stopping heat is surveyed to cavitation
The impact of amount, can apply different types of test section, can easily change Different hypothermia liquid, test section and cavitation zone can be entered
The synchro measure of row pressure, temperature and image.
3rd, a kind of cryogenic liquid cavitation experimental provision of the invention, it need not connect cryopump and realize that liquid flows, and
It is the flowing for realizing cryogenic liquid by pressure controlled mode, the adjustment of pressure and temperature can be carried out to cryogenic liquid, dynamic
Regulating power is strong, experiment condition broad covered area.
4th, a kind of cryogenic liquid cavitation experimental provision of the invention, needed for experiment, equipment structure is simple, and component is few, maintenance side
Just, the construction of experimental provision and maintenance cost are low；Device entirety energy consumption is low, and needed for experiment, the Low Temperature Liquid scale of construction is few, and liquid can be multiple
Reuse, economize on resources, reduce discharge.
5th, a kind of cryogenic liquid cavitation experimental provision of the invention, with double-deck insulation blocking and decompression protection, can be effective
Caused by preventing experimental provision rupture and leaking, cryogenic liquid is gushed out, the safety of effective protection experimenter.
Description of the drawings
Fig. 1 is cryogenic liquid cavitation experimental provision schematic diagram；
Fig. 2 is charging-tank partial interior schematic diagram；
Fig. 3 is collecting tank partial interior schematic diagram；
Fig. 4 is test section part schematic front view；
Fig. 5 is test section partial 3-D schematic diagram；
Fig. 6 is Visualization intrasegmental part schematic diagram；
Fig. 7 is Visualization section scale diagrams；
Fig. 8 is compensator part schematic front view；
Fig. 9 is compensator partial 3-D schematic diagram.
Wherein, 1 first high pressure nitrogen steel cylinder, 2 charging-tank outer housings, 3 filters, 4 turbine flowmeters, 5 realities
Experiment device support, 6 corrugated tubes, 7 Visualization section outer housings, 8 test section supports, 9 cold light sources, 10 light source controls
Device, 11 test section vacuum interfaces, 12 swivel bearings, 13 pilot control valves, 14 collecting tank outer housings, 15 second high pressure
Nitrogen cylinder, 16 collecting tank relief valves, 17 collecting tank pressurizing valves, 18 data collecting instruments, 19 computers, 20 high speeds
Video camera, 21 collecting tank pressure regulator valves, 22 first vacuum pumps, 23 breather valve, 24 vacuum pump control valves, 25 pressure regulation
Tank, 26 charging-tank pressure regulator valves, 27 charging-tank pressurizing valves, 28 charging-tank relief valves.
201 charging-tank inner bags, 202 charging-tank vacuum interfaces, 203 filter connectors, the sealing of 204 charging-tanks
Circle, 205 charging-tank sensor interfaces, the horizontal liquidometer of 206 charging-tanks, 207 charging-tanks longitudinal direction liquidometer.
1401 collecting tank inner bags, 1402 collecting tank vacuum interfaces, 1403 collecting tanks longitudinal direction liquidometer, 1404 are received
The horizontal liquidometer of collection tank, 1405 collecting tank sensor interfaces, 1406 collecting tank sealing rings.
701 Visualization sections, 702 Visualization section inlet sensor installing holes, 703 Visualization sections
Aditus laryngis sensor mounting hole, 704 test section vacuum chambers.
Specific embodiment
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of cryogenic liquid cavitation experimental provision, overall point of quinquepartite：Charging-tank part, test section part, collecting tank
Partly, compensator part, auxiliary equipment part.
Charging-tank part, as shown in Fig. 2 for storing and providing cryogenic liquid, can be to the pressure and temperature of cryogenic liquid
It is adjusted；Including charging-tank outer housing 2, charging-tank inner bag 201, charging-tank vacuum interface 202, filter connector 203, filter
3rd, charging-tank sealing ring 204, charging-tank sensor interface 205, charging-tank pressurizing valve 27, charging-tank relief valve 28, charging-tank are horizontal
To liquidometer 206, charging-tank longitudinal direction liquidometer 207, annexation：3 supports, charging-tank is welded with charging-tank outer housing 2
Frame is bolted with leg of test rig 5, and charging-tank is fixed on leg of test rig 5；It is equipped with charging-tank outer housing 2
Charging-tank sealing ring 204,2 bottom of charging-tank outer housing are provided with charging-tank vacuum interface 202, and charging-tank vacuum interface 202 is by pipe
Road is connected with the second vacuum pump, and in experimentation, the second vacuum pump persistently takes out pressure, it is ensured that charging-tank outer housing 2 and charging-tank inner bag
Be defined between 201 vacuum state (2-5Pa)；Charging-tank inner bag 201 is realized sealing by ring flange in upper end with charging-tank outer housing 2
Connection, charging-tank inner bag 201 are suspended on inside charging-tank outer housing 2；201 top of charging-tank inner bag is provided with pressurization mouth, pressure modulating opening
With charging-tank sensor interface 205,201 bottom of charging-tank inner bag is provided with test section water inlet, sets inside charging-tank inner bag 201
It is equipped with the horizontal liquidometer 206 of charging-tank and charging-tank longitudinal direction liquidometer 207；The pressurization mouth of charging-tank inner bag 201 is by pipeline and certainly
Pressure and low-temperature liquid Dewar connects, and can inject cryogenic liquid in charging-tank, after charging liquid at low-temperature is finished, charging-tank inner bag
201 pressurization mouths are connected with the first high pressure nitrogen steel cylinder 1 by pipeline, and pipeline is provided with charging-tank pressurizing valve 27 and charging-tank pressure release
Valve 28, for improving the pressure in 201 in charging-tank inner bag, and ensures that pressure is not higher than 2 atmospheric pressure in inner bag, prevents inner bag
And Visualization section 701 ruptures；201 pressure modulating opening of charging-tank inner bag is connected with 25 first pressure modulating opening of compensator by pipeline, pipe
Road is provided with charging-tank pressure regulator valve 26, for reducing the pressure in charging-tank inner bag 201；Charging-tank longitudinal direction liquidometer 207 is used for
During measurement experimental provision horizontal positioned in charging-tank inner bag 201 liquid volume, the horizontal liquidometer 206 of charging-tank is used for measuring reality
Experiment device is turned over after turning 90 degrees clockwise, when vertically placing in charging-tank inner bag 201 liquid volume, in order to experimental implementation；For
Answer in tank inner bag 201 and be provided with pressure and temperature sensor, for measuring the pressure and temperature of cryogenic liquid in tank, sensor lead
Draw from charging-tank sensor interface 205；The test section water inlet of charging-tank inner bag 201 is by filter connector 203 and filtration
Device 3 connects, and filter 3 is connected with turbine flowmeter 4 by flange, prevents impurity from entering turbine flowmeter 4 and Visualization
Section 701；Charging-tank sealing ring 204 is housed on filter 3.
Collecting tank part, as shown in figure 3, the cryogenic liquid of test section part is flowed through for storage, can be to cryogenic liquid
Pressure and temperature is adjusted；Including collecting tank outer housing 14, collecting tank inner bag 1401, collecting tank vacuum interface 1402, collecting tank
Sealing ring 1406, collecting tank sensor interface 1405, collecting tank pressurizing valve 17, the horizontal liquid level of collecting tank relief valve 16, collecting tank
Meter 1404, collecting tank longitudinal direction liquidometer 1403, annexation：Be welded with 3 supports on collecting tank outer housing 14, collect tank bracket with
Leg of test rig 5 is bolted, and collecting tank is fixed on leg of test rig 5；Equipped with receipts on collecting tank outer housing 14
Collection tank sealing ring 1406,14 bottom of collecting tank outer housing is provided with collecting tank vacuum interface 1402, and collecting tank vacuum interface 1402 passes through
Pipeline is connected with the second vacuum pump, and in experimentation, the second vacuum pump persistently takes out pressure, it is ensured that in collecting tank outer housing 14 and collecting tank
Be defined between gallbladder 1401 vacuum state (2-5Pa)；Collecting tank inner bag 1401 passes through ring flange reality with collecting tank outer housing 14 in upper end
Now it is tightly connected, collecting tank inner bag 1401 is suspended on inside collecting tank outer housing 14；1401 top of collecting tank inner bag is provided with pressurization
Mouth, pressure modulating opening and collecting tank sensor interface 1405,1401 bottom of collecting tank inner bag is provided with test section outlet, in collecting tank
Gallbladder 1401 is internally provided with the horizontal liquidometer 1404 of collecting tank and collecting tank longitudinal direction liquidometer 1403；Collecting tank inner bag 1401 pressurizes
Mouth is connected with the second high pressure nitrogen steel cylinder 15 by pipeline, and pipeline is provided with collecting tank pressurizing valve 17 and collecting tank relief valve 16,
For improving the pressure in 1401 in collecting tank inner bag, and ensure that pressure is not higher than 2 atmospheric pressure in inner bag, prevent inner bag and can
Rupture depending on changing test section 701；1401 pressure modulating opening of collecting tank inner bag is connected with 25 second pressure modulating opening of compensator by pipeline, on pipeline
Collecting tank pressure regulator valve 21 is provided with, for reducing the pressure in collecting tank inner bag 1401；Collecting tank longitudinal direction liquidometer 1403 is used for surveying
During amount experimental provision horizontal positioned in collecting tank inner bag 1401 liquid volume, the horizontal liquidometer 1404 of collecting tank is used for measuring reality
Experiment device is turned over after turning 90 degrees clockwise, when vertically placing in collecting tank inner bag 1401 liquid volume, in order to experimental implementation；Receive
Pressure and temperature sensor is provided with collection tank inner bag 1401, for measuring the pressure and temperature of cryogenic liquid in tank, sensor draws
Line is drawn from collecting tank sensor interface 1405；The test section outlet of collecting tank inner bag 1401 passes through flange and pilot control valve
13 connections.Collecting tank sealing ring 1406 is installed at the test section outlet pipeline of collecting tank inner bag 1401.
Volume of the volume of the collecting tank inner bag 1401 more than the charging-tank inner bag 201.
Test section part, as shown in Figure 4, Figure 5, Figure 6 and Figure 7, on or off experiment, carry out visual inspection and
Experimental data is gathered；Including turbine flowmeter 4, corrugated tube 6, Visualization section outer housing 7, test section vacuum interface 11, test
Control valve 13, Visualization section 701, Visualization section inlet sensor installing hole 702, Visualization section aditus laryngis sensing
Device installing hole 703, test section vacuum chamber 704, annexation：Turbine flowmeter 4, Visualization section 701 and pilot control valve
13 are sequentially connected by pipeline, and the replaceable cavitation so as to carry out other geometries of Visualization section 701 is tested；Visualization
701 periphery of test section is provided with Visualization section outer housing 7, and Visualization section outer housing 7 is to 701 supports of Visualization section
Effect, Visualization section outer housing 7 are secured by bolts in test section support 8；Four are furnished with Visualization section outer housing 7 thoroughly
Bright watch window, for testing visual observation, 7 front end of Visualization section outer housing is connected by screw with corrugated tube 6, ripple
Pipe 6 is used for adapting to thermal deformation caused by pipeline internal-external temperature difference, is evenly equipped with rubber seal between 7 surrounding dividing plate of Visualization section outer housing
Circle, is sealed using screw, forms test section vacuum chamber 704, open between Visualization section outer housing 7 and Visualization section 701
Test section vacuum interface 11 is provided with, test section vacuum interface 11 is connected with the second vacuum pump by pipeline, second in experimentation
Vacuum pump persistently takes out pressure, it is ensured that be defined between Visualization section outer housing 7 and Visualization section 701 vacuum state (2-5Pa)；
Visualization section inlet sensor installing hole 702 and Visualization section aditus laryngis sensing is provided with below Visualization section 701
Device installing hole 703, for installing pressure and temperature sensor, by sensor acquisition Visualization section entrance non-cavitating region
And the information of flow of Visualization section aditus laryngis cavitation generation area.
701 throat height h of the Visualization section is that Visualization section 701 goes out (enter) the 0.04 of open height H.
The Visualization section 701 adopts quartz glass；On the Visualization section outer housing 7, transparent observing window is adopted
Use plexiglas；
Compensator part, as shown in Figure 8 and Figure 9, reduces in charging-tank inner bag 201 and collecting tank inner bag 1401 for quick
Pressure；Including collecting tank pressure regulator valve 21, breather valve 23, vacuum pump control valve 24, compensator 25, charging-tank pressure regulator valve 26, connect
Connect relation：Offer the first pressure modulating opening, the second pressure modulating opening on compensator 25 respectively, take out pressure mouth and blow vent, compensator 25 first
Pressure modulating opening is connected with 201 pressure modulating opening of charging-tank inner bag by pipeline, and pipeline is provided with charging-tank pressure regulator valve 26；Compensator 25 second
Pressure modulating opening is connected with 1401 pressure modulating opening of collecting tank inner bag by pipeline, and pipeline is provided with collecting tank pressure regulator valve 21；Compensator 25 is taken out
Pressure mouth is connected with the first vacuum pump 22 by pipeline, and pipeline is provided with vacuum pump control valve 24, and the first vacuum pump 22 is used for reducing
Pressure in compensator 25；25 blow vent of compensator passes through pipeline and atmosphere, and pipeline is provided with breather valve 23, compensator 25
Pressure regulation pressure inside the tank can be reverted to an atmospheric pressure by blow vent, while can be used for emptying the cryogenic liquid in experimental provision.
Auxiliary equipment part, as shown in figure 1, being supported to experimental provision and rotating, and enters to Visualization section 701
Row observation synchronous recording experimental image and flow field data, including：Turbine flowmeter 4, leg of test rig 5, test section support 8,
Cold light source 9, light source controller 10, swivel bearing 12, data collecting instrument 18, computer 19, high-speed camera 20, pressure sensing
Device, temperature sensor, the second vacuum pump, annexation：Charging-tank part and collecting tank part are secured by bolts in experiment dress
Support 5 is put, 7 bolt of Visualization section outer housing is fixed on test section support 8, and test section support 8 is secured by bolts in experiment
Appliance stand 5, leg of test rig 5 ensure that experimental provision is in horizontality, and swivel bearing 12 is capable of achieving the whole of experimental provision
Body rotates, and realizes that experimental provision entirety dextrorotation turn 90 degrees by alignment pin；Turbine flowmeter 4 is connected to test by flange
Section part, flows into the flow of the cryogenic liquid of Visualization section 701 for measurement in real time；Set by Visualization section outer housing 7
There is cold light source 9, illuminate for Visualization section, and cause heat radiation, light source controller 10 as few as possible is used for controlling light
Source is opened and closed and adjusts the intensity of light source；High-speed camera 20 is provided with by Visualization section outer housing 7, for shooting Visualization section
Cavitation image in 701；In charging-tank inner bag 201 and collecting tank inner bag 1401, Visualization section inlet sensor installing hole
702 and Visualization section aditus laryngis sensor mounting hole 703 at, be mounted on pressure transducer and temperature sensor, for surveying
Pressure and temperature in amount device and in Visualization section 701；Data collecting instrument 18 is used for gathering pressure transducer, temperature biography
The data of sensor and turbine flowmeter 4；Computer 19 is used for controlling high-speed camera 20 and 18 synchronous acquisition of data collecting instrument can
Depending on changing pressure, temperature and the data on flows of the cavitation image in test section 701 and relevant position, and image and data are deposited
Storage.
The test section water inlet of charging-tank inner bag 201 is connected by pipeline with turbine flowmeter 4；Pilot control valve 13 passes through
Pipeline is connected with the test section outlet of collecting tank inner bag 1401；Charging-tank vacuum interface 202,1402 and of collecting tank vacuum interface
Test section vacuum interface 11 is connected with the second vacuum pump by pipeline, before cryogenic liquid adds experimental provision, the second vacuum pump
Persistently take out pressure, it is ensured that relevant position is defined vacuum state (2-5Pa), in process of the test, will also ensure that relevant position is defined vacuum shape
The position that cryogenic liquid flows is wrapped up and had to state, experimental provision without vacuum chamber, is wrapped up using heat-barrier material, low to prevent
Geothermal liquid heat absorption vaporization.
Specific work process is as follows：
Ensure before testing that all valves are in closed mode, the second vacuum pumping pressure is run by charging-tank outer housing 2 interior, receipts
Pressure in collection tank outer housing 14 and in Visualization section outer housing 7 is reduced to 2-5Pa, and continuous service takes out pressure；Disconnect the first high pressure
Nitrogen cylinder 1 and the connection of charging-tank pressurizing valve 27, will be connected with charging-tank pressurizing valve 27 from pressure and low-temperature liquid Dewar, be opened
Pilot control valve 13, collecting tank pressure regulator valve 21 and breather valve 23, open charging-tank pressurizing valve 27, open Dewar valve, in Dewar
Cryogenic liquid will flow into experimental provision in the case where driving from pressure charging system, initially enter charging-tank inner bag 201, then through visual
Change test section part and flow into collecting tank inner bag 1401, after charging liquid at low-temperature is finished, close Dewar valve, charging-tank pressurizing valve
27th, collecting tank pressure regulator valve 21 and breather valve 23；Disconnection is connected from pressure and low-temperature liquid Dewar with charging-tank pressurizing valve 27, by first
The connection of high pressure nitrogen steel cylinder 1 and charging-tank pressurizing valve 27；Vacuum pump control valve 24 is opened, the first vacuum pump 22 is run, will be adjusted
Pressure in pressure tank 25 is reduced to 2-5Pa, closes vacuum pump control valve 24, stops the first vacuum pump 22；Revolved by swivel bearing 12
Turn experimental provision, make cryogenic liquid be flowed between charging-tank inner bag 201 and collecting tank inner bag 1401 back and forth, make whole device
Temperature reaches unanimity, and experimental provision is placed in horizontality then, is fixed by alignment pin；Tank pressure regulator valve 26 is turned supply on, is supplied
The pressure in tank inner bag 201 is answered to reduce rapidly, the cryogenic liquid in collecting tank inner bag 1401 flows into charging-tank under differential pressure action
Inner bag 201, when the cryogenic liquid in collecting tank inner bag 1401 has flowed soon, closes pilot control valve 13, closes charging-tank pressure regulation
Valve 26, is full of cryogenic liquid in need to ensureing the pipeline of Visualization section 701 and test section part；Through aforesaid operations, pressure regulation
Pressure in tank 25 can be raised, and using the same manner, open vacuum pump control valve 24, run the first vacuum pump 22, by compensator
Pressure in 25 is reduced to 2-5Pa, closes vacuum pump control valve 24, stops the first vacuum pump 22；If opening the first high pressure nitrogen steel
Bottle valve, turns supply on tank pressurizing valve 27, and in charging-tank inner bag 201, the pressure of cryogenic liquid drastically can be raised, and temperature also can be with
Rising；If turning supply on tank pressure regulator valve 26, in charging-tank inner bag 201, the pressure of cryogenic liquid can be drastically reduced, and temperature also can
Decrease；Therefore the pressure and temperature of cryogenic liquid in charging-tank inner bag 201 can be adjusted, adjusted according to experiment demand
Corresponding control valve is closed after finishing, collecting tank pressure regulator valve 21 is opened, and is reduced the pressure in collecting tank inner bag 1401, is controlled test
Pressure reduction is formed before and after valve processed 13, is then shut off collecting tank pressure regulator valve 21；The control cold light source 9 of light source controller 10 is opened, and is adjusted
To suitable sources intensity, position and the angle of high-speed camera 20 is adjusted so as to clearly can photograph in Visualization section 701
Cryogenic liquid；Pilot control valve 13 is opened, experiment starts immediately, the cryogenic liquid in charging-tank inner bag 201 will be through test
Section part flows to collecting tank inner bag 1401, and cryogenic liquid flow velocity at 701 aditus laryngis of Visualization section reaches highest, pressure drop
It is low, when the reduced pressure saturated vapor pressure of cryogenic liquid at such a temperature, cryogenic liquid in 701 aditus laryngis of Visualization section and
There is cavitation phenomenon at aditus laryngis downstream, in cryogenic liquid flowing and cavitation processes, turbine flowmeter 4 will measurement cryogenic liquid
Stream flow, the pressure transducer and temperature sensor at Visualization section inlet sensor installing hole 702 will measure visualization
The pressure and temperature of 701 porch cryogenic liquid of test section, the pressure at Visualization section aditus laryngis sensor mounting hole 703 are passed
Sensor and temperature sensor will measure the pressure and temperature of cavitation zone at 701 aditus laryngis of Visualization section, charging-tank inner bag 201
Interior pressure transducer and temperature sensor will measure the change of pressure and temperature in charging-tank inner bag 201, collecting tank inner bag
Pressure transducer and temperature sensor in 1401 will measure the change of pressure and temperature in collecting tank inner bag 1401, all sensings
The data of device and effusion meter are gathered and are stored in computer 19 by data collecting instrument 18, and high-speed camera 20 will shoot visual
Change the image of cavitation zone at 701 aditus laryngis of test section, be then store in computer 19, the picture of all measurement data and shooting
It is synchro measure；Pressure differential in experimentation before and after pilot control valve 13 is gradually reduced, and cryogenic liquid flow velocity is gradually lowered,
Cavitation phenomenon can close pilot control valve 13 after stopping occurring, and suspend data acquisition, thus complete an experimental observation；
The valve of the second high pressure nitrogen steel cylinder after the completion of experimental observation, is opened, collecting tank pressurizing valve 17 is opened, will be received
Pressure rise in collection tank inner bag 1401, closes collecting tank pressurizing valve 17, closes the valve of the second high pressure nitrogen steel cylinder；Open and supply
Tank pressure regulator valve 26 is answered, and by the reduced pressure in charging-tank inner bag 201, the pressure in charging-tank inner bag 201 is made less than in collecting tank
Pressure in gallbladder 1401；Pilot control valve 13 is opened, the cryogenic liquid in collecting tank inner bag 1401 will flow back to charging-tank inner bag
201, when the cryogenic liquid in collecting tank inner bag 1401 has flowed soon, close pilot control valve 13；Again adjust by the way
In section charging-tank inner bag 201, the pressure and temperature of cryogenic liquid, readjusts the pressure of cryogenic liquid in collecting tank inner bag 1401,
Reach the experiment condition of setting；Open pilot control valve 13, you can carry out new experimental observation once.
Have cryogenic liquid vaporizer loss in experimentation unavoidably, if the amount of cryogenic liquid is not enough to complete once to test,
Cryogenic liquid is filled using above-mentioned the same manner into device then.
Experimental provision can be turn 90 degrees by axle center dextrorotation of swivel bearing 12, then make experiment by positioning finger setting
Device is in vertical state；Observation to cryogenic liquid cavitation phenomenon is completed using same way.
After the completion of experiment, the second vacuum pump is closed, disconnect the second vacuum pump true with charging-tank vacuum interface 202, collecting tank
The connection of null interface 1402 and test section vacuum interface 11, makes charging-tank inner bag 201, collecting tank inner bag 1401 and Visualization
Section 701 is contacted with surrounding air, the heat absorption vaporization of cryogenic liquid in Acceleration study device；Open pilot control valve 13, collect
Tank pressure regulator valve 21, charging-tank pressure regulator valve 26 and vacuum pump control valve 24, run the first vacuum pump 22, can take out the gas in device
From device, till cryogenic liquid is all emptied, after cryogenic liquid emptying, stop the first vacuum pump 22, close all valves,
Thus complete experiment.
Carried out by flange between other service pipes and connected.Visualization section 701 is also connected for flange with pipeline, is torn open
Unload conveniently, test section used by this is unloaded when other cavitation test sections experiments are carried out and other test sections are installed again.
Claims (6)
1. a kind of cryogenic liquid cavitation experimental provision, it is characterised in that：Overall point of quinquepartite：Charging-tank part, test section portion
Point, collecting tank part, compensator part, auxiliary equipment part；
Charging-tank part includes that charging-tank outer housing (2), charging-tank inner bag (201), charging-tank vacuum interface (202), filter connect
Head (203), filter (3), charging-tank sealing ring (204), charging-tank sensor interface (205), charging-tank pressurizing valve (27), confession
Answer tank relief valve (28), the horizontal liquidometer of charging-tank (206), charging-tank longitudinal direction liquidometer (207), annexation：Outside charging-tank
Support is welded with cover (2), and supply tank bracket is bolted with leg of test rig (5), and charging-tank is fixed on experiment
On appliance stand (5)；Charging-tank outer housing (2) bottom is provided with charging-tank vacuum interface (202), and charging-tank vacuum interface (202) leads to
Piping is connected with the second vacuum pump；Charging-tank inner bag (201) is realized sealing by ring flange in upper end with charging-tank outer housing (2)
Connection, it is internal that charging-tank inner bag (201) is suspended on charging-tank outer housing (2)；Charging-tank inner bag (201) top be provided with pressurization mouth,
Pressure modulating opening and charging-tank sensor interface (205), charging-tank inner bag (201) bottom is provided with test section water inlet, in charging-tank
Gallbladder (201) is internally provided with the horizontal liquidometer of charging-tank (206) and charging-tank longitudinal direction liquidometer (207)；Charging-tank inner bag (201)
Pressurization mouth passes through pipeline and is connected from pressure and low-temperature liquid Dewar, after charging liquid at low-temperature is finished, charging-tank inner bag (201) pressurization
Mouth is connected with the first high pressure nitrogen steel cylinder 1 by pipeline, and pipeline is provided with charging-tank pressurizing valve (27) and charging-tank relief valve
(28)；Charging-tank inner bag (201) pressure modulating opening is connected with (25) first pressure modulating opening of compensator by pipeline, and pipeline is provided with charging-tank
Pressure regulator valve (26)；Pressure and temperature sensor is provided with charging-tank inner bag (201), sensor lead is from charging-tank sensor interface
(205) draw；The test section water inlet of charging-tank inner bag (201) is connected with filter (3) by filter connector (203), mistake
Filter (3) is connected with turbine flowmeter (4) by flange, prevents impurity from entering turbine flowmeter (4) and Visualization section
(701)；Charging-tank sealing ring (204) is housed on filter (3)；
Collecting tank part includes collecting tank outer housing (14), collecting tank inner bag (1401), collecting tank vacuum interface (1402), collecting tank
Sealing ring (1406), collecting tank sensor interface (1405), collecting tank pressurizing valve (17), collecting tank relief valve (16), collecting tank
Horizontal liquidometer (1404), collecting tank longitudinal direction liquidometer (1403), annexation：Collecting tank outer housing is welded with support on (14),
Collect tank bracket to be bolted with leg of test rig (5), collecting tank is fixed on leg of test rig (5)；Collect
Tank outer housing (14) bottom is provided with collecting tank vacuum interface (1402), and collecting tank vacuum interface (1402) passes through pipeline and the second vacuum
Pump connects；Collecting tank inner bag (1401) is realized being tightly connected by ring flange in upper end with collecting tank outer housing (14), in collecting tank
It is internal that gallbladder (1401) is suspended on collecting tank outer housing (14)；Collecting tank inner bag (1401) top is provided with pressurization mouth, pressure modulating opening and receipts
Collection tank sensor interface (1405), collecting tank inner bag (1401) bottom is provided with test section outlet, collecting tank inner bag (1401)
It is internally provided with the horizontal liquidometer of collecting tank (1404) and collecting tank longitudinal direction liquidometer (1403)；Collecting tank inner bag (1401) pressurizes
Mouth is connected with the second high pressure nitrogen steel cylinder (15) by pipeline, and pipeline is provided with collecting tank pressurizing valve (17) and collecting tank relief valve
(16)；Collecting tank inner bag (1401) pressure modulating opening is connected with (25) second pressure modulating opening of compensator by pipeline, and pipeline is provided with collection
Tank pressure regulator valve (21), for reducing the pressure in collecting tank inner bag (1401)；Pressure and temperature are provided with collecting tank inner bag (1401)
Degree sensor, sensor lead are drawn from collecting tank sensor interface (1405)；The test section water outlet of collecting tank inner bag (1401)
Mouth is connected with pilot control valve (13) by flange；Collection is installed at the test section outlet pipeline of collecting tank inner bag (1401)
Tank sealing ring (1406)；
Test section part includes turbine flowmeter (4), corrugated tube (6), Visualization section outer housing (7), test section vacuum interface
(11), pilot control valve (13), Visualization section (701), Visualization section inlet sensor installing hole (702), visual
Change test section aditus laryngis sensor mounting hole (703), test section vacuum chamber (704), annexation：Turbine flowmeter (4), visualization
Test section (701) is sequentially connected by pipeline with pilot control valve (13)；Visualization section (701) periphery is provided with visualization
Test section outer housing (7)；Four transparent observing windows are furnished with Visualization section outer housing (7), before Visualization section outer housing (7)
End is connected by screw with corrugated tube (6), is evenly equipped with rubber seal between Visualization section outer housing (7) surrounding dividing plate, is adopted
Screw is sealed, and forms test section vacuum chamber (704), open up between Visualization section outer housing (7) and Visualization section (701)
There is test section vacuum interface (11), test section vacuum interface (11) is connected with the second vacuum pump by pipeline；Visualization section
(701) Visualization section inlet sensor installing hole (702) and Visualization section aditus laryngis sensor mounting hole is provided with below
(703), for installing pressure and temperature sensor；
Compensator part includes collecting tank pressure regulator valve (21), breather valve (23), vacuum pump control valve (24), compensator (25), confession
Answer tank pressure regulator valve (26), annexation：Offered on compensator (25) respectively the first pressure modulating opening, the second pressure modulating opening, take out pressure mouth and
Blow vent；Compensator (25) is taken out pressure mouth and is connected with the first vacuum pump (22) by pipeline, and pipeline is provided with vacuum pump control valve
(24), the first vacuum pump (22) is used for reducing the pressure in compensator (25)；Compensator (25) blow vent passes through pipeline and air
Connection, pipeline are provided with breather valve (23), and pressure regulation pressure inside the tank can be reverted to an atmospheric pressure by compensator (25) blow vent, together
When can be used for empty experimental provision in cryogenic liquid；
Auxiliary equipment part includes：Leg of test rig (5), test section support (8), cold light source (9), light source controller (10),
Swivel bearing (12), data collecting instrument (18), computer (19), high-speed camera (20), pressure transducer, temperature sensor,
Second vacuum pump, annexation：Visualization section outer housing (7) bolt is fixed on test section support (8), test section support (8)
Leg of test rig (5) is secured by bolts in, leg of test rig (5) ensures that experimental provision is in horizontality, will rotation
The axis of bearing (12) is installed perpendicular to the axis of Visualization section (701), to realize experiment dress by swivel bearing (12)
The integral-rotation put, makes cryogenic liquid be flowed between charging-tank inner bag (201) and collecting tank inner bag (1401) back and forth, makes whole
The temperature of device reaches unanimity, and realizes the positioning of experimental provision by alignment pin；Cold light is provided with by Visualization section outer housing (7)
Source (9), light source controller (10) are used for controlling light source opening and closing and adjust the intensity of light source；It is provided with by Visualization section outer housing (7)
High-speed camera (20)；Data collecting instrument (18) is used for gathering the number of pressure transducer, temperature sensor and turbine flowmeter (4)
According to；Computer (19) is used for controlling high-speed camera (20) and data collecting instrument (18) synchronous acquisition Visualization section (701)
The pressure of interior cavitation image and relevant position, temperature and data on flows, and image and data are stored；
Before cryogenic liquid adds experimental provision, the second vacuum pump persistently takes out pressure, it is ensured that relevant position is defined vacuum state, tests
To also ensure in journey that relevant position is defined vacuum state, experimental provision wraps up and have the position that cryogenic liquid flows without vacuum chamber,
Wrapped up using heat-barrier material, to prevent cryogenic liquid heat absorption vaporization.
2. a kind of cryogenic liquid cavitation experimental provision as claimed in claim 1, it is characterised in that：The collecting tank inner bag
(1401) volume of the volume more than charging-tank inner bag (201).
3. a kind of cryogenic liquid cavitation experimental provision as claimed in claim 1, it is characterised in that：The Visualization section
(701) throat height h is the 0.01-0.08 of Visualization section (701) outlet and entrance height H.
4. a kind of cryogenic liquid cavitation experimental provision as claimed in claim 1, it is characterised in that：The Visualization section
And transparent observing window adopts transparent material on Visualization section outer housing (7) (701).
5. a kind of cryogenic liquid cavitation experimental provision as claimed in claim 1, it is characterised in that：The Visualization section
(701) adopt quartz glass；On Visualization section outer housing (7), transparent observing window adopts plexiglas.
6. a kind of cryogenic liquid cavitation experimental provision as claimed in claim 1, it is characterised in that：The Visualization section
(701) it is replaceable.
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| CN201510004702.1A CN104535292B (en) | 2015-01-06 | 2015-01-06 | Cryogenic liquid cavitation experimental device |
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| CN201510004702.1A CN104535292B (en) | 2015-01-06 | 2015-01-06 | Cryogenic liquid cavitation experimental device |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6070333A (en) * | 1983-09-28 | 1985-04-22 | Hitachi Ltd | Cavitation erosion testing apparatus |
| RU2256895C1 (en) * | 2003-10-27 | 2005-07-20 | Институт проблем транспорта энергоресурсов | Method for determining concentration of liquid cavitation cores |
| CN103278308B (en) * | 2013-04-23 | 2015-04-15 | 浙江大学 | Visualization experiment device for deep cryogenic two-phase countercurrent process |
| CN103728193A (en) * | 2013-12-20 | 2014-04-16 | 浙江大学 | Visual minitype fluid cavitation testing device |
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