CN105699413B - Work in the simulation system for thermodynamics exhaust system research of room temperature warm area - Google Patents
Work in the simulation system for thermodynamics exhaust system research of room temperature warm area Download PDFInfo
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- CN105699413B CN105699413B CN201610104049.0A CN201610104049A CN105699413B CN 105699413 B CN105699413 B CN 105699413B CN 201610104049 A CN201610104049 A CN 201610104049A CN 105699413 B CN105699413 B CN 105699413B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
Abstract
The present invention relates to a kind of simulation systems for thermodynamics exhaust system research for working in room temperature warm area, wherein storage tank is used to hold propellant, it is provided with propellant intake line and gas exhaust piping, heat exchange injection apparatus is located inside storage tank, heat exchange and injection dual function are coupled, heater is arranged on the outside of storage tank, for simulating storage tank leakage heat, tonifying Qi pressure piping is used to be pressurized into storage tank, sensor is provided on the pipeline set on storage tank and storage tank, data collecting instrument is connect with sensor, it acquires the data of sensor and is transferred to computer, the data of computer receiving sensor, and after making logic judgment, the keying of valve and circulating pump on order control piper is sent by logic controller, realize the automation control for meeting thermodynamics exhaust disciplinarian request.The present invention is operated in room temperature warm area, and system structure simply, securely and reliably, can be effectively used for realizing certainly supercharging and exhaust pressure control process simulation of the fluid in closed container after heated generation gas-liquid phase transition.
Description
Technical field
The present invention relates to a kind of for studying the simulation system of thermodynamics exhaust system, room is worked in more particularly, to one kind
The simulation system for thermodynamics exhaust system research of warm area.
Background technology
Cryogenic propellant (such as liquid hydrogen LH2, liquid oxygen LO2, liquid methane LCH4Deng) in long-term in-orbit storage process, due to sky
Between environment leakage heat so that cryogenic propellant is vaporized so as to cause pressure rise in storage tank, when reaching tank designs pressure allowable value
When, it is necessary to it gives and discharges.Since gas-liquid unobvious detach under microgravity, according to the method being periodically directly vented, then will cause
Outside big quantity of fluid discharge case, propellant mass is caused to lose.Seek a kind of not only can effectively control storage tank pressure but also can be in phase
By the new technical means of cryogenic propellant minimization of loss under the conditions of, the long-term in-orbit storage of cryogenic propellant is actually weighed
It will.It is proposed in the United States Patent (USP) of Publication No. US5398515 by Rockwell Internationnal Corporation
Thermodynamics exhaust system (Thermodynamic Vent System, TVS) is the effective solution party that disclosure satisfy that this requirement
One of case, it can realize only exhaust not drain under ground 1g gravity and space 0g gravity environments, can also eliminate in storage tank
The thermally stratified layer of liquid controls storage tank pressure under double action.But the patent is for LO2、LH2Etc. cryogens storage tanks, it is real
Existing technical difficulty is big, safety requirements is high, involves great expense, and is not suitable for the general character regular basis research of thermodynamics exhaust technique.It is stored up
Case is obturator, can not either be inconvenient to replace internal heat assembly of elements or the configuration of component is operated；In case not
Relate to reflect in real time that the temperature measurement system of fluid thermally stratified layer level and reflection liquid fill/remaining liquid level are surveyed in storage tank
Amount system；Also lack the enabled condition that visual observation is carried out to gas-liquid two-phase fluid thermodynamic state in storage tank.Due to low temperature
There are huge thermal fields, the tank system thermal insulation control of the patent between fluid and atmospheric environment to be not easy to realize；It works under low temperature
Low-power consumption circulating pump technical difficulty it is big.
Find do not have provided on ground by the use of boiling temperature higher refrigerant as working medium is simulated both at home and abroad through retrieval
Thermodynamics is vented the device or system of common technology research.This device or system requirements can facilitate, are real at low cost
The measurement observation of medium heat mechanical change process in existing storage tank and the assessment of each composition cell operation performance of thermodynamics exhaust, permit
Perhaps babinet frequently open and replace, be configured inside device.
Invention content
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of simple in structure, safety
Reliably, the simulation system for thermodynamics exhaust system research for working in room temperature warm area that is at low cost, being easy to disassembling, assembling and replacing.This
The simulation system of invention can be effectively used for realizing fluid heated supercharging certainly and exhaust occurred after gas-liquid phase transition in closed container
Pressure control process simulation.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of simulation system for thermodynamics exhaust system research for working in room temperature warm area, including：
Storage tank：Both ends carry the cylinder of ellipse head, for holding propellant, are provided with propellant intake line
With gas exhaust piping, valve is set on propellant intake line and gas exhaust piping；
Exchange heat injection apparatus：Inside storage tank, the inside of lower end and storage tank is connected as circulation loop by pipeline, is following
Loop back path is equipped with solenoid valve and circulating pump, and upper end setting outlet, outlet is with stretching out the propellant efferent duct outside storage tank
Road connects, and solenoid valve is set on propellant output pipe；
Heater：It is arranged on the outside of storage tank, for simulating storage tank leakage heat；
Tonifying Qi pressure piping：It is communicated with inside storage tank, for being pressurized into storage tank；
Sensor：Including being pressed inside monitoring storage tank, on propellant intake line, propellant output pipe and gas exhaust piping
Power, flow, liquid level, the pressure sensor of temperature, flow sensor, differential pressure liquid level sensor and temperature sensor；
Data collecting instrument：It is connect with sensor, acquire the data of sensor and is transferred to computer；
Computer：The data of receiving sensor, and after making logic judgment, pass through logic controller and send order control electromagnetism
The automation control for meeting thermodynamics exhaust disciplinarian request is realized in the open and close of valve and circulating pump.
The heat exchange injection apparatus include three double pipe heat exchangers, dispenser, mounting flange and injector, described three
Double pipe heat exchanger includes the inner tube, intermediate tube and the outer tube that are arranged concentrically, between the inner tube, the intermediate tube and outer tube
Interlayer simultaneously connect with the dispenser, composition three double pipe heat exchangers a round trip heat exchanger channels, the inner tube
Interlayer between intermediate tube is another heat exchanger channels of three double pipe heat exchangers, and between the inner tube and intermediate tube
Interlayer connects inlet tube and outlet, the mounting flange are welded to connect, and Method for Installation simultaneously with inner tube, intermediate tube and outer tube
Blue center opens up the opening connected with internal tube, and the injector is mounted on outer tube outer wall, and with intermediate tube and outer tube
Between interlayer communicate.The interlayer silk of spiral winding disturbance in an axial direction between the inner tube and intermediate tube, and the disturbance silk is tight
Outer wall of inner tube, interlayer between the intermediate tube and outer tube silk of spiral winding disturbance in an axial direction are pasted, and during the disturbance silk is close to
Between pipe outer wall.The disturbance silk is copper wire.Silk is disturbed by setting, enhances flow disturbance, improves heat exchanger efficiency.
The dispenser is the cavity body structure being made of top surface and bottom surface, the bottom surface of the dispenser simultaneously with it is interior
Pipe, intermediate tube and outer tube connect, and the circular hole communicated with inner tube are offered among the bottom surface of the dispenser, around circular hole
Weld access hole is offered, the interlayer between the weld access hole and intermediate tube and outer tube communicates.The top surface of the dispenser
For the curve form of evagination, curve form reduce fluid via the dispenser enter the three double pipe heat exchangers outer tube with
The energy loss generated during interlayer between intermediate tube.
The injector shares several groups, and every group of injector is located in a plane of outer tube outer wall, difference group injection
It is arranged in parallel between device, every group of injector shares 4, and along outer tube outer wall into quadrant week tangential distribution, the injector is
The L-shaped playpipe to smoothly transit, for arrival end vertical connection on outer tube wall, the port of export is parallel to outer tube circumference tangential direction.
The injector is separated by 90 degree of tangentially fired fluids in outer tube circumferencial direction, and injector realizes cryogenic propellant in storage tank
Interior disturbance enhances the effect for eliminating thermally stratified layer.Offer screw thread on the inside of the port of export of the injector, can by
Whether the port of export of injector is threaded into plug to realize on-demand non-homogeneous injection, to adapt to practical in-orbit cryogenic propellant
The storage tank sun is to the situation of unlucky nonuniform heat flux.Similarly, screw thread can also be opened up on the outside of the port of export of injector, twisted
Enter the nut of closing to block injector.
The heat exchange injection apparatus realizes two fluids heat exchange and wherein stream of fluid injection will return to storage tank coupling
The dual function being integrated..
The storage tank both ends are respectively upper end head and lower end head, and upper end head passes through connecting flange and storage tank main body
Be connected, realize storage tank open wide and it is closed, can be by opening connection method when needing to install, replacing storage tank inside unit under test
Orchid simultaneously removes upper end head realization；The mounting flange is fixed on the inside bottom of storage tank lower end head, and outside storage tank
Equipped with circulation line, which is connected in lower end head, and with being connected inside storage tank, which leads to
The opening crossed on mounting flange is connected with internal tube.
By circulation line head end caudad direction, solenoid valve, valve, filter, stream are sequentially set on circulation line
Quantity sensor, circulating pump, flow sensor and solenoid valve draw throttling pipeline between circulating pump and flow sensor, and
The throttling pipeline is connected with inlet tube, on throttle pipe road be equipped with solenoid valve and throttle valve, filter for prevent impurity into
It becomes a mandarin in gauge.
Valve, flow sensor and valve, the propellant output pipe are sequentially set on the gas exhaust piping
Solenoid valve is equipped with, the tonifying Qi pressure piping is equipped with valve, and the tonifying Qi pressure piping is connect with nitrogen cylinder, described
Propellant intake line be equipped with valve, the pressure sensor by pipeline directly with storage tank inside connect.
The storage tank outer wall is symmetrically opened up there are two observation window, for observing gas-liquid two inside storage tank by high speed camera
Phase flowing law.
The storage tank bottom is set there are three the supporting leg with idler wheel so that storage tank can be moved easily, three branch midlegs
There is epoxy plate interlayer to reduce leakage heat of the storage tank by supporting leg.
The differential pressure liquid level sensor is arranged in storage tank outer bottom, for measuring the liquid level of storage tank, is passed with differential pressure liquid level
The gas phase pressure guiding pipe that sensor is connected is arranged with liquid phase pressure guiding pipe along storage tank internal face, not only reduces the shadow of external environment leakage heat
It rings, decreases the influence for fluid flow fields in storage tank and thermal field.One plumbing bar is set in storage tank, the equidistant cloth on plumbing bar
It is equipped with temperature sensor.Plumbing bar is thin epoxy bar, reduces influence of plumbing bar itself heat conduction for thermal field in storage tank.
The heater is made of the semi-open type heating watt for being close to four power adjustables of storage tank outside wall surface, both can be with mould
Intend storage tank and uniformly leak heat, the non-homogeneous leakage heat of storage tank can also be simulated.
Compared with prior art, the present invention has the following advantages and beneficial effects：
1st, new heat exchange injection apparatus is employed in the present invention, by two fluids heat exchange and the stream of wherein one return storage tank
Body injection dual function coupling is integrated, and the injection apparatus that exchanges heat is independent device, using flanged joint, facilitate installation,
Dismounting and replacement., the heat exchanger used in injection apparatus that exchanges heat is three double pipe heat exchangers, and heat exchange is improved by increasing heat exchange area
Efficiency.By retaining fluid in storage tank and discharging the wall-type heat exchange between fluid, the equalizing temperature for retaining fluid is realized；It changes
Runner spiral cloth has disturbance silk in thermal spray equipment heat exchanger so that simple in structure, compact, heat exchange efficiency is high；Heat exchange injection dress
It puts and is sprayed using several groups of injectors of quadrant week tangential distribution, stirring effect is apparent, can also easily vary injection
The effective quantity of head and distribution, to realize on-demand non-homogeneous injection, with adapt to the practical in-orbit cryogenic propellant storage tank sun to
The situation of unlucky nonuniform heat flux.Exchanging heat, injection apparatus is simple in structure, heat exchange efficiency is high, jeting effect is apparent, can be effective
The thermally stratified layer in cryogenic propellant storage tank is eliminated, achievees the purpose that auxiliary control cryogenic propellant storage tank pressure, helps to realize
The long-term storage of cryogenic propellant.
2nd, in present system, all components for thermodynamics exhaust system research all work under room temperature warm area, drop
Low technology and cost requirement to equipment such as circulating pump, liquid level gauge, flowmeters, present system experiment is safe, very
It is suitable under safe and reliable and inexpensive prerequisite, gropes and be disclosed for the thermodynamics exhaust of gas-liquid phase transition fluid
The basic general character rule of technology.
3rd, in present system, be provided with it is multiple including monitoring storage tank inside, propellant intake line, propellant efferent duct
Road and pressure, flow, liquid level, the pressure sensor of temperature, flow sensor, differential pressure liquid level sensor and temperature on gas exhaust piping
Sensor, and data collecting instrument is connect with sensor, is acquired the data of sensor and is transferred to computer, and computer, which receives, to be passed
The data of sensor, and after making logic judgment, pass through unlatching and pass that logic controller sends order control solenoid valve and circulating pump
It closes, realizes the automation control for meeting thermodynamics exhaust disciplinarian request.Therefore, it adopts in present system and carries out in an automated fashion
Thermodynamics exhaust system research.
Description of the drawings
Fig. 1 is the structure diagram of simulation system of the present invention；
Fig. 2 is the specific three dimensional structure diagram in dotted line frame I in Fig. 1；
Fig. 3 is broken section structure diagram in dotted line frame II in Fig. 2；
Fig. 4 is the dimensional structure diagram of heat exchange injection apparatus；
Fig. 5 is the schematic cross-sectional view of heat exchange injection apparatus；
Fig. 6 is A-A faces schematic cross-sectional view in Fig. 4；
Fig. 7 is B-B faces schematic cross-sectional view in Fig. 4；
Fig. 8 is enlarged structure schematic diagram at C in Fig. 5.
Figure label：1 is storage tank, and 2 be plumbing bar, and 3 be heat exchange injection apparatus, and 4 be differential pressure liquid level sensor, 5,10,13,19
For solenoid valve, 6,16,18,21 it is shut-off valve, 29 is valve, 7 be filter, and 8,11,17 be flow sensor, and 9 be circulating pump,
12 be throttle valve, and 14 be heater, and 15 be pressure sensor, and 20 be tonifying Qi pressure piping, and 22 be computer, and 23 be logic control
Device, 24 be data collecting instrument, and 25 be interlayer, and 26 be observation window, and 27 be connecting flange, and 28 be upper end head, and 30 be mounting flange,
31 be three double pipe heat exchangers, and 32 be dispenser, and 33 be injector, and 34 be weld access hole, and 35 be inner tube, and 36 be intermediate tube, 37
It is outlet for outer tube, 38,39 be disturbance silk, and 40 be inlet tube.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
A kind of simulation system for thermodynamics exhaust system research for working in room temperature warm area, as shown in FIG. 1 to 3,
Including storage tank 1, heat exchange injection apparatus 3, heater 14, tonifying Qi pressure piping 20, data collecting instrument 24 and computer 22, wherein,
1 both ends of storage tank carry the cylinder of ellipse head, for holding propellant, are provided with propellant intake line and exhaust pipe
Road sets valve on propellant intake line and gas exhaust piping；Heat exchange injection apparatus 3 is located inside storage tank 1, lower end and storage tank
1 inside is connected as circulation loop by pipeline, and solenoid valve and circulating pump 9, upper end setting outlet are equipped on circulation loop
38, outlet 38 is connected with stretching out the propellant output pipe outside storage tank 1, and solenoid valve is set on propellant output pipe；
Heater 14 is arranged on 1 outside of storage tank, leaks heat for simulating storage tank 1；It communicates, is used for inside tonifying Qi pressure piping 20 and storage tank 1
It is pressurized into storage tank 1；Sensor is included inside monitoring storage tank 1, propellant intake line, propellant output pipe and gas exhaust piping
Upper pressure, flow, liquid level, the pressure sensor 15 of temperature, flow sensor 8,11,17, differential pressure liquid level sensor 4 and temperature pass
Sensor；Data collecting instrument 24 is connect with sensor, is acquired the data of sensor and is transferred to computer 22；Computer 22, which receives, to be passed
The data of sensor, and after making logic judgment, pass through logic controller 23 and send order control solenoid valve, valve and circulating pump 9
It opens and closes, realizes the automation control for meeting thermodynamics exhaust disciplinarian request.
The storage tank 1 of the present embodiment is diameter 450mm, high 790mm, wall thickness 3mm, and both ends carry major and minor axis 2:1 ellipse head
Cylinder, 1 both ends of storage tank are respectively upper end head 28 and lower end head, and upper end head 28 passes through connecting flange 27 and storage tank master
Body is connected, realize storage tank 1 open wide and it is closed, when needing to install, replacing unit under test inside storage tank, can pass through and open connection
Flange 27 simultaneously removes upper end head realization；Mounting flange 30 is fixed on the inside bottom of 1 lower end head of storage tank, and outside storage tank 1
Portion is equipped with circulation line, which is connected in lower end head, and is connected with 1 inside of storage tank, the circulation line tail
End is connected by the opening on mounting flange 30 with 35 inside of inner tube.
By circulation line head end caudad direction, solenoid valve 5, shut-off valve 6, filter are sequentially set on circulation line
7th, flow sensor 8, circulating pump 9, flow sensor 11 and solenoid valve 13 are drawn between circulating pump 9 and flow sensor 11
Throttle pipeline, and the throttling pipeline is connected with inlet tube 40, and solenoid valve 10 and throttle valve 12 are equipped on throttle pipe road.
Shut-off valve 16, flow sensor 17 and shut-off valve 18 are sequentially set on gas exhaust piping, on propellant output pipe
Equipped with solenoid valve 19, tonifying Qi pressure piping 20 is equipped with shut-off valve 21, and tonifying Qi pressure piping 20 is connect with nitrogen cylinder, and propellant is defeated
Enter pipeline equipped with valve 29, pressure sensor 15 is directly connected by pipeline with 1 inside of storage tank.What flow sensor 17 measured
It is the flow rate of refrigerant gas being evaporated from storage tank, which is only measuring the hot stage use of the practical leakage of storage tank, making in TVS
With the stage, the flowmeter does not use, and storage tank refrigerant gas is discharged by 19 place pipeline of solenoid valve at this time.
1 outer wall of storage tank is symmetrically opened up there are two observation window 26, for observing gas-liquid two-phase inside storage tank by high speed camera
Flowing law.1 bottom of storage tank is set there are three the supporting leg with idler wheel so that storage tank 1 can be moved easily, and three branch midlegs have
Thickness is the epoxy plate interlayer 25 of 50mm to reduce leakage heat of the storage tank 1 by supporting leg.
Differential pressure liquid level sensor 4 is arranged in 1 outer bottom of storage tank, for measuring the liquid level of storage tank 1, with differential pressure liquid level sensor
4 connected gas phase pressure guiding pipes are arranged with liquid phase pressure guiding pipe along 1 internal face of storage tank, not only reduce the shadow of external environment leakage heat
It rings, decreases the influence for fluid flow fields and thermal field in storage tank 1.
One plumbing bar 2 of setting, temperature sensor is arranged in equal spacing on plumbing bar 2 in storage tank 1.Plumbing bar 2 is diameter 5mm's
Thin epoxy bar, one end is threadedly secured to storage tank upper end head inside top, hangs on inside storage tank vertically, detachably more
It changes, reduces influence of plumbing bar itself heat conduction for thermal field in storage tank 1.
Heater 14 is made of the semi-open type heating watt for being close to four power adjustables of 1 outside wall surface of storage tank, in the present embodiment,
Semi-open type heating watt peak power is 220W, can both simulate storage tank and uniformly leak heat, can also simulate the non-homogeneous leakage heat of storage tank.
As Figure 4-8, heat exchange injection apparatus 3 includes three double pipe heat exchangers 31, dispenser 32, mounting flange 30 and spray
Emitter 33, three double pipe heat exchangers 31 include the inner tube 35 that the outer diameter that is arranged concentrically is respectively φ 14mm, φ 19mm and φ 24mm,
Intermediate tube 36 and outer tube 37, the interlayer between inner tube 35, intermediate tube 36 and outer tube 37 connect simultaneously with dispenser 32, form three sets
One round trip heat exchanger channels of pipe heat exchanger 31, the interlayer between inner tube 35 and intermediate tube 36 are three double pipe heat exchangers 31
Another heat exchanger channels, and the interlayer between inner tube 35 and intermediate tube 36 connects inlet tube 40 and outlet 38, mounting flange 30
It is welded to connect simultaneously with inner tube 35, intermediate tube 36 and outer tube 37, and 30 center of mounting flange opens up what is connected with 35 inside of inner tube
Opening, injector 33 is mounted on 37 outer wall of outer tube, and the interlayer between intermediate tube 36 and outer tube 37 communicates.Inner tube 35 is in
Between the interlayer silk 39 of spiral winding disturbance in an axial direction between pipe 36, and the disturbance silk 39 is close to 35 outer wall of inner tube, intermediate tube 36 with
The interlayer silk 39 of spiral winding disturbance in an axial direction between outer tube 37, and the disturbance silk 39 is close to 36 outer wall of intermediate tube.Disturb silk 39
Copper wire for a diameter of 1.5mm.Silk 39 is disturbed by setting, enhances flow disturbance, improves heat exchanger efficiency.
Dispenser 32 is the cavity body structure being made of top surface and bottom surface, the bottom surface of dispenser 32 simultaneously with inner tube 35, intermediate
Pipe 36 and outer tube 37 connect, and the circular hole communicated with inner tube 35 is offered among the bottom surface of dispenser 32, is opened up around circular hole
There is weld access hole 34, the interlayer between weld access hole 34 and intermediate tube 36 and outer tube 37 communicates.The top surface of dispenser 32 is evagination
Curve form, curve form reduce fluid via the dispenser enter the three double pipe heat exchangers outer tube and intermediate tube
Between interlayer when the energy loss that generates.
Injector 33 shares several groups, and every group of injector 33 is located in a plane of 37 outer wall of outer tube, difference group injection
It is arranged in parallel between device 33, axial distance 24mm, every group of injector 33 shares 4, along 37 outer wall of outer tube into cutting in quadrant week
To distribution, injector 33 is the L-shaped playpipe to smoothly transit, and for arrival end vertical connection on 37 side wall of outer tube, the port of export is parallel
In 37 circumference tangential direction of outer tube.Injector is separated by 90 degree of tangentially fired fluids in outer tube circumferencial direction, and injector realizes
Disturbance of the cryogenic propellant in storage tank enhances the effect for eliminating thermally stratified layer.The port of export internal diameter of injector be 2mm, inside
Offer screw thread, can by realizing on-demand non-homogeneous injection whether the port of export of injector is threaded into plug, with
Adapt to situation of the practical in-orbit cryogenic propellant storage tank sun to unlucky nonuniform heat flux.It similarly, can also be in injector
The port of export on the outside of open up screw thread, be screwed into the nut of closing to block injector.
Heat exchange injection apparatus 3 realizes two fluids heat exchange and wherein stream of fluid injection return storage tank 1 is coupled as one
The dual function of body.
The operation when simulation system of the present invention uses is as follows：
It is initially turned off valve 6,16,18,21,29 to be in closing, solenoid valve 5,10,13,19 is in closed state, first
It opens valve 29 and is added in R141b refrigerants working medium in storage tank 1 by charging mouth, pass through differential pressure liquid level sensor in filling process
4 read real-time level in storage tank, and until storage tank liquid level reaches predetermined value, valve 29 is closed in stopping filling.Heater 14 is transferred to
Predetermined power, opening stop valve 16,18 after 17 stable reading of flow sensor, record the reading of flow sensor 17 respectively
V, the reading T of the thermometer before the reading P of pressure sensor 15 and pressure sensor 17.It is actually entered by formula (1) calculating
The heat of storage tank
Q=v. ρ Δs h (1)
ρ is density of the working medium under pressure P, temperature T-shaped state in formula, and △ h are the latent heat of vaporization of the working medium under pressure P.
After obtaining the heat for actually entering storage tank, shut-off valve 16,18 is closed, thermodynamics exhaust system (TVS) is carried out and acts on
Under pressure control procedure：As heat constantly enters storage tank, the pressure in case gradually rises, and is measured when by pressure sensor 15
Pneumatic die cushion pressure PPneumatic die cushionReach the upper limit P of predetermined pressure control bandmaxWhen, the opens solenoid valve 5,13 under the effect of logic controller 23
And circulating pump 9, injector 33 is run, circulating pump 9 extracts the liquid or biphase gas and liquid flow in storage tank, it is pressed directly into injector
It is sprayed after 33 and returns to storage tank, the liquid in storage tank is stirred with this, eliminate thermally stratified layer, the pressure of storage tank is reduced, until the pressure of storage tank
Power is reduced to pressure lower limit Pmin.In 33 course of work of injector, when the corresponding saturation pressure of storage tank liquid medium temperature
PsatWhen reaching the lower limit of press belt, by 23 opens solenoid valve 10,19 of logic controller, run throttle valve 12 and bushing type is changed
Hot device 31, the partially liq that circulating pump 9 is sent out obtained cold fluid by the cooling of throttle valve 12, and entered double pipe heat exchanger 31
Cold end and the liquid of heat exchanger hot junction flowing carry out heat exchange, and own temperature is increased and completely vaporized after absorbing heat, discharge storage
Case；And the fluid in heat exchanger hot junction is returned in storage tank after being then cooled and is mixed with remaining liquid storage, solenoid valve 10,19 is with electricity later
The closing of magnet valve 5,13 and circulating pump 9 and close.After the pressure controlling cycle under completing an above-mentioned TVS effect, storage tank pressure
Power restarts to increase, until reaching press belt upper limit P againmax, the pressure controlling cycle under being acted on into next TVS.Such as
This continuous operation can realize the simulation of the lower storage tank lengthy pressure continuous cycles variation of TVS effects.Pass through during experiment
Differential pressure liquid level sensor 4, pressure sensor 15, flow sensor 8,11 can obtain liquid level in storage tank, Gas Gap Pressure, pump in real time
Flow, throttling take out than etc. physical quantitys, by before and after being arranged in storage tank internal face, flow sensor, before and after throttle valve, exhaust ports
And the temperature sensor on plumbing bar can obtain the thermally stratified layer situation in the temperature and storage tank of corresponding position.In addition, experiment process
In can also using high speed camera pass through observation window 26 carry out storage tank in gas-liquid phase transition rule visual research.After the completion of experiment
Open valve 6 can discharge storage tank residue working medium.
The above description of the embodiments is intended to facilitate ordinary skill in the art to understand and use the invention.
Person skilled in the art obviously can easily make these embodiments various modifications, and described herein general
Principle is applied in other embodiment without having to go through creative labor.Therefore, the present invention is not limited to above-described embodiment, abilities
Field technique personnel announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be the present invention's
Within protection domain.
Claims (10)
1. a kind of simulation system for thermodynamics exhaust system research for working in room temperature warm area, which is characterized in that including：
Storage tank (1)：Both ends carry the cylinder of ellipse head, for holding propellant, are provided with propellant intake line
With gas exhaust piping, valve is set on propellant intake line and gas exhaust piping；
Exchange heat injection apparatus (3)：Internal positioned at storage tank (1), the inside of lower end and storage tank (1) is connected as being recycled back to by pipeline
Road is equipped with solenoid valve and circulating pump (9) on circulation loop, and upper end setting outlet (38), outlet (38) is with stretching out storage tank
(1) external propellant output pipe connection, solenoid valve is set on propellant output pipe；
Heater (14)：It is arranged on the outside of storage tank (1), for simulating storage tank (1) leakage heat；
Tonifying Qi pressure piping (20)：With being communicated inside storage tank (1), for being pressurized into storage tank (1)；
Sensor：Including pressure on monitoring storage tank (1) inside, propellant intake line, propellant output pipe and gas exhaust piping,
Flow, liquid level, the pressure sensor (15) of temperature, flow sensor (8,11,17), differential pressure liquid level sensor (4) and temperature pass
Sensor；
Data collecting instrument (24)：It is connect with sensor, acquire the data of sensor and is transferred to computer (22)；
Computer (22)：The data of receiving sensor, and after making logic judgment, pass through logic controller (23) and send order control
The automation control for meeting thermodynamics exhaust disciplinarian request is realized in the open and close of solenoid valve and circulating pump (9).
2. a kind of simulation system for thermodynamics exhaust system research for working in room temperature warm area according to claim 1
System, which is characterized in that the heat exchange injection apparatus (3) includes three double pipe heat exchangers (31), dispenser (32), mounting flange
(30) and injector (33),
Three double pipe heat exchangers (31) include the inner tube (35), intermediate tube (36) and the outer tube (37) that are arranged concentrically,
Interlayer between the inner tube (35), the intermediate tube (36) and outer tube (37) simultaneously with the dispenser (32)
Connection forms a round trip heat exchanger channels of three double pipe heat exchangers (31),
Interlayer between the inner tube (35) and intermediate tube (36) is another heat exchanger channels of three double pipe heat exchangers (31),
And the interlayer between the inner tube (35) and intermediate tube (36) connects inlet tube (40) and outlet (38),
It the mounting flange (30) while is welded to connect, and mounting flange with inner tube (35), intermediate tube (36) and outer tube (37)
(30) center opens up the opening with being connected inside inner tube (35),
The injector (33) is on outer tube (37) outer wall, and the interlayer phase between intermediate tube (36) and outer tube (37)
It is logical.
3. a kind of simulation system for thermodynamics exhaust system research for working in room temperature warm area according to claim 2
System, which is characterized in that the dispenser (32) is the cavity body structure being made of top surface and bottom surface, the dispenser (32)
Bottom surface is connect simultaneously with inner tube (35), intermediate tube (36) and outer tube (37), is offered among the bottom surface of the dispenser (32)
The circular hole communicated with inner tube (35) offers weld access hole (34), the weld access hole (34) and centre around circular hole
Pipe (36) is communicated with the interlayer between outer tube (37).
4. a kind of simulation system for thermodynamics exhaust system research for working in room temperature warm area according to claim 2
System, which is characterized in that the injector (33) is several groups shared, and every group of injector (33) is positioned at one of outer tube (37) outer wall
It in plane, is arranged in parallel between difference group injectors (33), every group of injector (33) shares 4, along outer tube (37) outer wall into four
Cyclotomy week tangential distribution, the injector (33) is the L-shaped playpipe to smoothly transit, and arrival end vertical connection is in outer tube (37)
On side wall, the port of export is parallel to outer tube (37) circumference tangential direction.
5. a kind of simulation system for thermodynamics exhaust system research for working in room temperature warm area according to claim 2
System, which is characterized in that described storage tank (1) both ends are respectively upper end head (28) and lower end head, and upper end head (28) passes through
Connecting flange (27) is connected with storage tank main body, realizes the unlimited and closed of storage tank (1), the mounting flange (30) is fixed on storage
The inside bottom of case (1) lower end head, and circulation line is equipped with outside storage tank (1), which is connected to lower end
On end socket, and with being connected inside storage tank (1), which passes through in the opening on mounting flange (30) and inner tube (35)
Portion connects.
6. a kind of simulation system for thermodynamics exhaust system research for working in room temperature warm area according to claim 5
System, which is characterized in that by circulation line head end caudad direction, solenoid valve (5), valve are sequentially set on circulation line
(6), filter (7), flow sensor (8), circulating pump (9), flow sensor (11) and solenoid valve (13), in circulating pump (9)
Throttling pipeline is drawn between flow sensor (11), and the throttling pipeline is connected with inlet tube (40), in throttling pipeline
It is equipped with solenoid valve (10) and throttle valve (12).
7. a kind of simulation system for thermodynamics exhaust system research for working in room temperature warm area according to claim 1
System, which is characterized in that shut-off valve (16), flow sensor (17) and shut-off valve are sequentially set on the gas exhaust piping
(18), the propellant output pipe is equipped with solenoid valve (19), and the tonifying Qi pressure piping (20) is equipped with shut-off valve
(21), the tonifying Qi pressure piping (20) is connect with nitrogen cylinder, and the propellant intake line is equipped with valve (29), institute
The pressure sensor (15) stated is by pipeline directly with being connected inside storage tank (1).
8. a kind of simulation system for thermodynamics exhaust system research for working in room temperature warm area according to claim 1
System, which is characterized in that described storage tank (1) outer wall offers observation window (26).
9. a kind of simulation system for thermodynamics exhaust system research for working in room temperature warm area according to claim 1
System, which is characterized in that the differential pressure liquid level sensor (4) is arranged in storage tank (1) outer bottom, for measuring the liquid of storage tank (1)
Position, the gas phase pressure guiding pipe being connected with differential pressure liquid level sensor (4) are arranged with liquid phase pressure guiding pipe along storage tank (1) internal face；It is storing up
One plumbing bar of setting (2), temperature sensor is arranged in equal spacing on plumbing bar (2) in case (1).
10. a kind of simulation system for thermodynamics exhaust system research for working in room temperature warm area according to claim 1
System, which is characterized in that the heater (14) is by being close to the semi-open type heating watts of four power adjustables of storage tank (1) outside wall surface
Composition.
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| CN108386708B (en) * | 2018-01-12 | 2020-09-25 | 中国矿业大学 | Pressure-control low-temperature storage tank with injection device |
| CN108150822A (en) * | 2018-01-12 | 2018-06-12 | 中国矿业大学 | A kind of low temperature liquid hydrogen storage tank with exhaust cold energy use |
| CN108163398B (en) * | 2018-01-12 | 2019-09-13 | 中国矿业大学 | A kind of efficiently controlling pressure cryogenic propellant storage tank with induction apparatus |
| CN109723962A (en) * | 2019-02-26 | 2019-05-07 | 重庆零壹空间航天科技有限公司 | Cryogenic propellant tank, long-term in-orbit integrated low temperature storage are for system and method |
| CN110282157A (en) * | 2019-06-29 | 2019-09-27 | 西安交通大学 | A kind of thermodynamics exhaust system using tangential centrifugal atomization |
| CN112550779B (en) * | 2020-11-27 | 2022-04-12 | 中国运载火箭技术研究院 | Ground integration test device and method for low-temperature propellant thermodynamic exhaust system |
| CN113963618B (en) * | 2021-09-09 | 2024-02-02 | 西北工业大学 | Working process simulation device of extrusion type liquid rocket engine |
| CN113984826B (en) * | 2021-10-22 | 2022-10-28 | 西安交通大学 | Visual experimental device for observing fluid phase state in low-temperature bare-wall storage tank |
| CN114384197B (en) * | 2022-01-13 | 2022-12-02 | 西安交通大学 | Experimental apparatus is observed to no pump drive's thermodynamics exhaust system flow state |
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