CN105699413A - Analog system which works in room temperature area and is used for thermodynamics exhaust system research - Google Patents
Analog system which works in room temperature area and is used for thermodynamics exhaust system research Download PDFInfo
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- CN105699413A CN105699413A CN201610104049.0A CN201610104049A CN105699413A CN 105699413 A CN105699413 A CN 105699413A CN 201610104049 A CN201610104049 A CN 201610104049A CN 105699413 A CN105699413 A CN 105699413A
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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 invention relates to an analog system which works in a room temperature area and is used for thermodynamics exhaust system research. A storage box is used for containing a propelling agent and provided with a propelling agent inputting pipeline and an exhaust pipeline; a heat exchange jet device is located in the storage box, and the dual functions of heat exchange and jetting are coupled; a heater is arranged on the outer side of the storage box and used for simulating heat leakage of the storage box; an air supplementing supercharging pipeline is used for supercharging the interior of the storage box; sensors are arranged on the storage box and the pipelines arranged on the storage box; a data acquisition instrument is connected with the sensors and used for acquiring data of the sensors and transmitting the data to a computer; the computer receives the data of the sensors and makes logic judgment, then a logic controller is used for sending an instruction to control valves on the pipelines and a circulating pump to be opened or closed, and automatic control meeting the thermodynamics exhaust rule requirement is achieved. The analog system works in the room temperature area, the system is simple in structure, safe and reliable, and the analog system can be effectively used for simulating the self-pressurization and the exhausting pressure control process after fluid is heated in a closed container and gas-liquid phase change happens to the fluid.
Description
Technical field
The present invention relates to a kind of analog systems for studying thermodynamics gas extraction system, especially relate to a kind of analog systems for thermodynamics gas extraction system research working in room temperature warm area。
Background technology
Cryogenic propellant is (such as liquid hydrogen LH2, liquid oxygen LO2, liquid methane LCH4Deng) in long-term storage process in-orbit, due to spatial environments leakage heat so that cryogenic propellant vaporization is thus causing pressure in storage tank to raise, when reaching tank designs pressure allowable value, it is necessary to discharge。Due to the inconspicuous separation of gas-liquid under microgravity, according to the method for regularly directly emptying, then will cause that big quantity of fluid is discharged outside case, and cause propellant mass to lose。Seek a kind of not only can effectively control storage tank pressure but also can, under the same conditions by the new technical means of cryogenic propellant minimization of loss, store for cryogenic propellant long-term actually important in-orbit。Thermodynamics gas extraction system (the ThermodynamicVentSystem proposed in the United States Patent (USP) that publication number is US5398515 by RockwellInternationnalCorporation, TVS) it is one of effective solution that disclosure satisfy that this requirement, it can realize an aerofluxus not discharge opeing under ground 1g gravity and space 0g gravity environment, the thermally stratified layer of liquid in storage tank can also be eliminated, under dual function, control storage tank pressure。But this patent is for LO2、LH2Etc. cryogen storage tank, it is achieved technical difficulty is big, safety requirements is high, involve great expense, be not suitable for the general character regular basis research of thermodynamics exhaust technique。Its storage tank is obturator, it is impossible to or be inconvenient to change internal heat assembly of elements or the configuration of parts is operated；It is not related to reflect in real time in storage tank the temperature measurement system of fluid thermal layering level in case and reflection liquid fill/remaining liquid level measuring system；Also lack and gas-liquid two-phase fluid thermodynamic state in storage tank is carried out the permissive condition of visual observation。Owing to there is huge temperature field between cryogen and atmospheric environment, the tank system thermal insulation of this patent controls not easily to realize；Work in the low-power consumption circulating pump technical difficulty under low temperature big。
Find do not have the cold-producing medium utilizing boiling temperature higher on ground as simulation working medium to provide device or the system of thermodynamics aerofluxus common technology research both at home and abroad through retrieval。The measuring of the medium heat mechanical change process that this device or system requirements can facilitate, realizes at low cost in storage tank is observed and the assessment of each component units service behaviour of thermodynamics aerofluxus, it is allowed to the device of inside is opened and replace, being configured to casing frequently。
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and a kind of simple in construction is provided, safe and reliable, cost is low, is prone to the analog systems for thermodynamics gas extraction system research working in room temperature warm area of disassembling, assembling and replacing。The analog systems of the present invention can be effectively used for realizing fluid be heated in hermetic container there is gas-liquid phase transition after from supercharging and aerofluxus pressure control process simulation。
The purpose of the present invention can be achieved through the following technical solutions:
A kind of analog systems for thermodynamics gas extraction system research working in room temperature warm area, including:
Storage tank: two ends, with the cylinder of ellipse head, are used for holding propellant, are provided with propellant intake line and gas exhaust piping, arranges valve on propellant intake line with gas exhaust piping；
Heat exchange injection apparatus: be positioned at inside storage tank, the inside of lower end and storage tank is connected as closed circuit by pipeline, closed circuit is provided with electromagnetic valve and circulating pump, upper end arranges outlet, outlet connects with the propellant output pipe stretched out outside storage tank, arranges electromagnetic valve on propellant output pipe；
Heater: be arranged on outside storage tank, is used for simulating storage tank leakage heat；
QI invigorating pressure piping: communicate with inside storage tank, is used for supercharging in storage tank；
Sensor: include inside monitoring storage tank, propellant intake line, propellant output pipe and gas exhaust piping upward pressure, flow, liquid level, the pressure transducer of temperature, flow transducer, differential pressure liquid level sensor and temperature sensor；
Data collecting instrument: be connected with sensor, gathers the data of sensor and is transferred to computer；
Computer: receive the data of sensor, and after making logical judgment, send order by logic controller and control the open and close of electromagnetic valve and circulating pump, it is achieved meet the Automated condtrol of thermodynamics aerofluxus disciplinarian request。
Described heat exchange injection apparatus includes three double pipe heat exchangers, liquor separator, mounting flange and ejector, three described double pipe heat exchangers include the interior pipe being arranged concentrically, intervalve and outer tube, described interior pipe, interlayer between described intervalve and outer tube connects with described liquor separator simultaneously, constitute a round trip heat exchanger channels of three double pipe heat exchangers, described another heat exchanger channels that the interlayer between interior pipe and intervalve is three double pipe heat exchangers, and the interlayer between described interior pipe and intervalve connects inlet tube and outlet, described mounting flange simultaneously with interior pipe, intervalve and outer tube are welded to connect, and mounting flange center offers the opening connected with internal tube, described ejector is arranged on outer tube outer wall, and and intervalve with outer tube between interlayer communicate。The interlayer silk of spiral winding disturbance vertically between described interior pipe and intervalve, and this disturbance silk is close to outer wall of inner tube, the silk of spiral winding disturbance vertically of the interlayer between described intervalve and outer tube, and this disturbance silk and is close to intervalve outer wall。Described disturbance silk is copper wire。By arranging disturbance silk, strengthen flow disturbance, improve heat exchanger efficiency。
Described liquor separator is the cavity body structure being made up of end face and bottom surface, the bottom surface of described liquor separator is connected with interior pipe, intervalve and outer tube simultaneously, the circular hole communicated with interior pipe is offered in the middle of the bottom surface of described liquor separator, offering weld access hole around circular hole, the interlayer between described weld access hole and intervalve with outer tube communicates。The end face of described liquor separator is the curve form of evagination, the energy loss that curve form produces when decreasing the interlayer that fluid enters between described three double pipe heat exchanger outer tubes and intervalve via described liquor separator。
Described ejector has some groups, often group ejector is positioned in a plane of outer tube outer wall, it be arranged in parallel between different group ejectors, often group ejector has 4, quadrant week tangential distribution is become along outer tube outer wall, described ejector is the L-shaped playpipe smoothly transitted, and arrival end vertical connection is on outer tube wall, and the port of export is parallel to outer tube circumference tangential direction。Described ejector is separated by 90 degree of tangentially fired fluids at outer tube circumferencial direction, and ejector achieves cryogenic propellant disturbance in storage tank, enhances the effect eliminating thermally stratified layer。Screw thread is offered, it is possible to realize on-demand non-homogeneous injection by whether being threaded into plug at the port of export of ejector, to adapt to the reality cryogenic propellant storage tank sun in-orbit to the situation of unlucky nonuniform heat flux inside the port of export of described ejector。In like manner, it is also possible to outside the port of export of ejector, offer screw thread, the nut of closing it is screwed into block ejector。
Described heat exchange injection apparatus achieves two fluids heat exchange and wherein stream of fluid injection return storage tank is coupled as the dual-use function of one。.
Described storage tank two ends respectively upper end end socket and lower end end socket, upper end end socket is connected with storage tank main body by adpting flange, realize opening wide and airtight of storage tank, when needs are installed, changed storage tank inside unit under test, can pass through to open adpting flange and remove upper end end socket to realize；Described mounting flange is fixed on the inside bottom of storage tank lower end end socket, and it is provided externally with circulation line at storage tank, this circulation line head end is connected on the end socket of lower end, and connects with storage tank inside, and this circulation line tail end is connected with internal tube by the opening on mounting flange。
By circulation line head end caudad direction, circulation line is sequentially set with electromagnetic valve, valve, filter, flow transducer, circulating pump, flow transducer and electromagnetic valve, throttling pipeline is drawn between circulating pump and flow transducer, and this throttling pipeline is connected with inlet tube, being provided with electromagnetic valve and choke valve on throttling pipeline, filter is used for preventing impurity from entering in effusion meter。
Described gas exhaust piping is sequentially set with valve, flow transducer and valve, described propellant output pipe is provided with electromagnetic valve, described QI invigorating pressure piping is provided with valve, described QI invigorating pressure piping is connected with nitrogen cylinder, described propellant intake line is provided with valve, and described pressure transducer connects by pipeline is directly internal with storage tank。
Described storage tank outer wall symmetry offers two observation windows, for observing the internal gas liquid two-phase flow rule of storage tank by high speed camera。
Being provided with three supporting legs with roller bottom described storage tank so that storage tank can be moved easily, three midlegs all have epoxy plate interlayer to reduce the storage tank leakage heat by supporting leg。
Described differential pressure liquid level sensor is arranged in storage tank outer bottom, for measuring the liquid level of storage tank, the gas phase pressure guiding pipe being connected with differential pressure liquid level sensor and liquid phase pressure guiding pipe are all arranged along storage tank internal face, not only reduce the impact of external environment leakage heat, decrease the impact for fluid flow fields in storage tank and temperature field。One plumbing bar is set in storage tank, plumbing bar is equidistantly provided with temperature sensor。Plumbing bar is thin epoxy bar, reduces plumbing bar self heat conduction for the impact of temperature field in storage tank。
Described heater is made up of the semi-open type heating watt of four power adjustable being close to storage tank outside wall surface, both can simulate storage tank and uniformly leak heat, it is also possible to the non-homogeneous leakage heat of simulation storage tank。
Compared with prior art, the present invention has the following advantages and beneficial effect:
1, the present invention have employed new heat exchange injection apparatus, fluid jet dual-use function of two fluids heat exchange with wherein one return storage tank is coupled as one, and heat exchange injection apparatus is independent device, employing Flange joint, conveniently install, dismantle and change。, heat exchanger used by heat exchange injection apparatus is three double pipe heat exchangers, improves heat exchange efficiency by increasing heat exchange area。By retaining fluid and the wall-type heat exchange discharged between fluid in storage tank, it is achieved retain the equalizing temperature of fluid；In heat exchange injection apparatus heat exchanger, runner spiral cloth thankss for your hospitality movable wire so that simple in construction, compact, heat exchange efficiency is high；Heat exchange injection apparatus adopts some groups of ejectors of quadrant week tangential distribution to spray, stirring effect is obvious, also can easily vary effective quantity and the distribution of injector head, realize on-demand non-homogeneous injection, to adapt to the reality cryogenic propellant storage tank sun in-orbit to the situation of unlucky nonuniform heat flux。Heat exchange injection apparatus simple in construction, heat exchange efficiency are high, jeting effect is obvious, can effectively eliminate the thermally stratified layer in cryogenic propellant storage tank, reach the purpose of assist control cryogenic propellant storage tank pressure, contribute to realizing the longer-term storage of cryogenic propellant。
2, in present system, all component for thermodynamics gas extraction system research all works under room temperature warm area, reduce the technology to equipment such as circulating pump, liquidometer, effusion meters and cost requirement, present system experimental safe is high, it is highly suitable under the prerequisite of safe and reliable and low cost, gropes and be disclosed for the basic general character rule of thermodynamics exhaust technique of gas-liquid phase transition fluid。
3, in present system, be provided with multiple include monitoring storage tank inside, propellant intake line, propellant output pipe and gas exhaust piping upward pressure, flow, liquid level, the pressure transducer of temperature, flow transducer, differential pressure liquid level sensor and temperature sensor, and data collecting instrument is connected with sensor, gather the data of sensor and be transferred to computer, computer receives the data of sensor, and after making logical judgment, send order by logic controller and control the open and close of electromagnetic valve and circulating pump, realize meeting the Automated condtrol of thermodynamics aerofluxus disciplinarian request。Therefore, present system is adopted and carry out thermodynamics gas extraction system research in an automated fashion。
Accompanying drawing explanation
Fig. 1 is the structural representation of analog systems of the present invention；
Fig. 2 is the concrete three dimensional structure schematic diagram in Fig. 1 in broken box I；
Fig. 3 is broken section structural representation in broken box II in Fig. 2；
Fig. 4 is the perspective view of heat exchange injection apparatus；
Fig. 5 is the sectional structure schematic diagram of heat exchange injection apparatus；
Fig. 6 is A-A face sectional structure schematic diagram in Fig. 4；
Fig. 7 is B-B face sectional structure schematic diagram in Fig. 4；
Fig. 8 is C place structure for amplifying schematic diagram in Fig. 5。
Number in the figure: 1 is storage tank, 2 is plumbing bar, 3 is heat exchange injection apparatus, 4 is differential pressure liquid level sensor, 5, 10, 13, 19 is electromagnetic valve, 6, 16, 18, 21 is stop valve, 29 is valve, 7 is filter, 8, 11, 17 is flow transducer, 9 is circulating pump, 12 is choke valve, 14 is heater, 15 is pressure transducer, 20 is QI invigorating pressure piping, 22 is computer, 23 is logic controller, 24 is data collecting instrument, 25 is interlayer, 26 is observation window, 27 is adpting flange, 28 is upper end end socket, 30 is mounting flange, 31 is three double pipe heat exchangers, 32 is liquor separator, 33 is ejector, 34 is weld access hole, 35 is interior pipe, 36 is intervalve, 37 is outer tube, 38 is outlet, 39 is disturbance silk, 40 is inlet tube。
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail。
Embodiment
A kind of analog systems for thermodynamics gas extraction system research working in room temperature warm area, as shown in FIG. 1 to 3, including storage tank 1, heat exchange injection apparatus 3, heater 14, QI invigorating pressure piping 20, data collecting instrument 24 and computer 22, wherein, storage tank 1 two ends are with the cylinder of ellipse head, for holding propellant, it is provided with propellant intake line and gas exhaust piping, propellant intake line with gas exhaust piping arrange valve；It is internal that heat exchange injection apparatus 3 is positioned at storage tank 1, the inside of lower end and storage tank 1 is connected as closed circuit by pipeline, closed circuit is provided with electromagnetic valve and circulating pump 9, upper end arranges outlet 38, outlet 38 connects with the propellant output pipe stretched out outside storage tank 1, arranges electromagnetic valve on propellant output pipe；Heater 14 is arranged on outside storage tank 1, is used for simulating storage tank 1 and leaks heat；QI invigorating pressure piping 20 is internal with storage tank 1 to communicate, and is used for supercharging in storage tank 1；Sensor include monitoring storage tank 1 inside, propellant intake line, propellant output pipe and gas exhaust piping upward pressure, flow, liquid level, the pressure transducer 15 of temperature, flow transducer 8,11,17, differential pressure liquid level sensor 4 and temperature sensor；Data collecting instrument 24 is connected with sensor, gathers the data of sensor and is transferred to computer 22；Computer 22 receives the data of sensor, and after making logical judgment, sends order by logic controller 23 and control the open and close of electromagnetic valve, valve and circulating pump 9, it is achieved meet the Automated condtrol of thermodynamics aerofluxus disciplinarian request。
The storage tank 1 of the present embodiment is diameter 450mm, high 790mm, wall thickness 3mm, two ends are with the cylinder of major and minor axis 2:1 ellipse head, storage tank 1 two ends respectively upper end end socket 28 and lower end end socket, upper end end socket 28 is connected with storage tank main body by adpting flange 27, it is achieved opening wide and airtight of storage tank 1, when needs are installed, changed storage tank inside unit under test, can pass through to open adpting flange 27 and remove upper end end socket to realize；Mounting flange 30 is fixed on the inside bottom of storage tank 1 lower end end socket, and it is provided externally with circulation line at storage tank 1, this circulation line head end is connected on the end socket of lower end, and connects with storage tank 1 inside, and this circulation line tail end connects by the opening on mounting flange 30 and interior pipe 35 are internal。
By circulation line head end caudad direction, circulation line is sequentially set with electromagnetic valve 5, stop valve 6, filter 7, flow transducer 8, circulating pump 9, flow transducer 11 and electromagnetic valve 13, throttling pipeline is drawn between circulating pump 9 and flow transducer 11, and this throttling pipeline is connected with inlet tube 40, throttling pipeline is provided with electromagnetic valve 10 and choke valve 12。
Gas exhaust piping is sequentially set with stop valve 16, flow transducer 17 and stop valve 18, propellant output pipe is provided with electromagnetic valve 19, QI invigorating pressure piping 20 is provided with stop valve 21, QI invigorating pressure piping 20 is connected with nitrogen cylinder, propellant intake line is provided with valve 29, and pressure transducer 15 connects by pipeline is directly internal with storage tank 1。What flow transducer 17 was measured is the flow rate of refrigerant gas being evaporated from storage tank, this effusion meter is only measuring the actual leakage heat stage use of storage tank, not using at this effusion meter of TVS active phase, now storage tank refrigerant gas is discharged by electromagnetic valve 19 place pipeline。
Storage tank 1 outer wall symmetry offers two observation windows 26, for observing the internal gas liquid two-phase flow rule of storage tank by high speed camera。Being provided with three supporting legs with roller bottom storage tank 1 so that storage tank 1 can be moved easily, the epoxy plate interlayer 25 that three midlegs all have thickness to be 50mm is warm by the leakage of supporting leg to reduce storage tank 1。
Differential pressure liquid level sensor 4 is arranged in storage tank 1 outer bottom, for measuring the liquid level of storage tank 1, the gas phase pressure guiding pipe being connected with differential pressure liquid level sensor 4 and liquid phase pressure guiding pipe are all arranged along storage tank 1 internal face, not only reduce the impact of external environment leakage heat, decrease the impact for fluid flow fields in storage tank 1 and temperature field。
One plumbing bar 2 is set in storage tank 1, plumbing bar 2 is equidistantly provided with temperature sensor。Plumbing bar 2 is the thin epoxy bar of diameter 5mm, and one end is threadedly secured to storage tank upper end end socket inside top, vertically hangs on inside storage tank, detachable, reduces plumbing bar self heat conduction for the impact of temperature field in storage tank 1。
Heater 14 is made up of the semi-open type heating watt of four power adjustable being close to storage tank 1 outside wall surface, and in the present embodiment, semi-open type heating watt peak power is 220W, both can simulate storage tank and uniformly leak heat, it is also possible to the non-homogeneous leakage heat of simulation storage tank。
As Figure 4-8, heat exchange injection apparatus 3 includes three double pipe heat exchangers 31, liquor separator 32, mounting flange 30 and ejector 33, three double pipe heat exchangers 31 include the external diameter respectively φ 14mm being arranged concentrically, the interior pipe 35 of φ 19mm and φ 24mm, intervalve 36 and outer tube 37, interior pipe 35, interlayer between intervalve 36 with outer tube 37 connects with liquor separator 32 simultaneously, constitute a round trip heat exchanger channels of three double pipe heat exchangers 31, interlayer between interior pipe 35 and intervalve 36 is another heat exchanger channels of three double pipe heat exchangers 31, and the interlayer between interior pipe 35 and intervalve 36 connects inlet tube 40 and outlet 38, with interior pipe 35 while of mounting flange 30, intervalve 36 and outer tube 37 are welded to connect, and mounting flange 30 center is offered and the internal opening connected of interior pipe 35, ejector 33 is arranged on outer tube 37 outer wall, and and intervalve 36 with outer tube 37 between interlayer communicate。The interlayer silk of spiral winding disturbance vertically 39 between interior pipe 35 and intervalve 36, and this disturbance silk 39 is close to interior pipe 35 outer wall, the silk of spiral winding disturbance vertically of the interlayer between intervalve 36 and outer tube 37 39, and this disturbance silk 39 and is close to intervalve 36 outer wall。Disturbance silk 39 is the copper wire of 1.5mm for diameter。By arranging disturbance silk 39, strengthen flow disturbance, improve heat exchanger efficiency。
Liquor separator 32 is the cavity body structure being made up of end face and bottom surface, the bottom surface of liquor separator 32 is connected with interior pipe 35, intervalve 36 and outer tube 37 simultaneously, the circular hole communicated with interior pipe 35 is offered in the middle of the bottom surface of liquor separator 32, offering weld access hole 34 around circular hole, the interlayer between weld access hole 34 and intervalve 36 with outer tube 37 communicates。The end face of liquor separator 32 is the curve form of evagination, the energy loss that curve form produces when decreasing the interlayer that fluid enters between described three double pipe heat exchanger outer tubes and intervalve via described liquor separator。
Ejector 33 has some groups, often group ejector 33 is positioned in a plane of outer tube 37 outer wall, it be arranged in parallel between different group ejectors 33, axial distance is 24mm, often group ejector 33 has 4, becomes quadrant week tangential distribution, ejector 33 to be the L-shaped playpipe smoothly transitted along outer tube 37 outer wall, arrival end vertical connection is on outer tube 37 sidewall, and the port of export is parallel to outer tube 37 circumference tangential direction。Ejector is separated by 90 degree of tangentially fired fluids at outer tube circumferencial direction, and ejector achieves cryogenic propellant disturbance in storage tank, enhances the effect eliminating thermally stratified layer。The port of export internal diameter of ejector is 2mm, inner side offers screw thread, on-demand non-homogeneous injection can be realized by whether being threaded into plug at the port of export of ejector, to adapt to the reality cryogenic propellant storage tank sun in-orbit to the situation of unlucky nonuniform heat flux。In like manner, it is also possible to outside the port of export of ejector, offer screw thread, the nut of closing it is screwed into block ejector。
Heat exchange injection apparatus 3 achieves two fluids heat exchange and wherein stream of fluid injection return storage tank 1 is coupled as the dual-use function of one。
The operation when analog systems of the present invention uses is as follows:
It is initially turned off valve 6,16,18,21,29 to be in closing, electromagnetic valve 5,10,13,19 is in closed mode, it is first turned on valve 29 and by charging mouth, R141b cold-producing medium working medium is added in storage tank 1, filling process reads real-time level in storage tank by differential pressure liquid level sensor 4, until storage tank liquid level reaches predetermined value, stop filling, close valve 29。Heater 14 is transferred to predetermined power, opening stop valve 16,18, after flow transducer 17 stable reading, the reading T of the thermometer before the record reading v of flow transducer 17, the reading P of pressure transducer 15 and pressure transducer 17 respectively。Through type (1) calculates the heat actually entering storage tank
Q=v. ρ. Δ h (1)
In formula, ρ is working medium density under pressure P, temperature T-shaped state, and Δ h is the working medium latent heat of vaporization under pressure P。
After obtaining the heat actually entering storage tank, close stop valve 16,18, carry out the pressure control procedure under thermodynamics gas extraction system (TVS) effect: constantly enter storage tank along with heat, the pressure in case gradually rises, when the pneumatic die cushion pressure P recorded by pressure transducer 15Pneumatic die cushionReach predetermined pressure and control the upper limit P of bandmaxTime, opens solenoid valve 5,13 and circulating pump 9 under logic controller 23 acts on, run ejector 33, circulating pump 9 extracts the liquid in storage tank or biphase gas and liquid flow, after it is pressed directly into ejector 33, ejection returns storage tank, stirs the liquid in storage tank with this, eliminates thermally stratified layer, reduce the pressure of storage tank, until the pressure of storage tank is reduced to press belt lower limit Pmin。In ejector 33 work process, as the saturation pressure P that storage tank liquid medium temperature is correspondingsatWhen reaching the lower limit of press belt, by logic controller 23 opens solenoid valve 10,19, run choke valve 12 and double pipe heat exchanger 31, the partially liq that circulating pump 9 is sent obtains supercool fluid by choke valve 12 cooling, and the liquid entering the cold end of double pipe heat exchanger 31 and the flowing of heat exchanger hot junction carries out heat exchange, after absorbing heat, own temperature raises and completely vaporizes, and discharges storage tank；The fluid in heat exchanger hot junction returns in storage tank after being then cooled and mixes with all the other liquid storages, and electromagnetic valve 10,19 cuts out with the cut out of electromagnetic valve 5,13 afterwards and circulating pump 9。Stress control week after date under completing an above-mentioned TVS effect, storage tank pressure restarts to raise, until again reaching press belt upper limit Pmax, enter the Stress control cycle under next TVS effect。So run continuously, just can realize the continuous periodically variable simulation of storage tank lengthy pressure under TVS effect。Process of the test can obtain liquid level in storage tank in real time by differential pressure liquid level sensor 4, pressure transducer 15, flow transducer 8,11, Gas Gap Pressure, pump discharge, throttling take out than etc. physical quantity, the temperature sensor by being arranged in before and after storage tank internal face, flow transducer, before and after choke valve, on exhaust ports and plumbing bar can obtain the thermally stratified layer situation in the temperature of relevant position and storage tank。It addition, process of the test can also utilize high speed camera pass through observation window 26 carry out the visual research of gas-liquid phase transition rule in storage tank。Test rear Open valve 6, it is possible to storage tank is remained working medium and discharges。
The above-mentioned description to embodiment is to be understood that for ease of those skilled in the art and use invention。These embodiments obviously easily can be made various amendment by person skilled in the art, and General Principle described herein is applied in other embodiments without through performing creative labour。Therefore, the invention is not restricted to above-described embodiment, those skilled in the art's announcement according to the present invention, the improvement made without departing from scope and amendment all should within protection scope of the present invention。
Claims (10)
1. the analog systems for thermodynamics gas extraction system research working in room temperature warm area, it is characterised in that including:
Storage tank (1): two ends, with the cylinder of ellipse head, are used for holding propellant, are provided with propellant intake line and gas exhaust piping, arranges valve on propellant intake line with gas exhaust piping；
Heat exchange injection apparatus (3): be positioned at storage tank (1) internal, the inside of lower end and storage tank (1) is connected as closed circuit by pipeline, closed circuit is provided with electromagnetic valve and circulating pump (9), upper end arranges outlet (38), outlet (38) connects with the propellant output pipe stretching out storage tank (1) outside, arranges electromagnetic valve on propellant output pipe；
Heater (14): be arranged on storage tank (1) outside, is used for simulating storage tank (1) leakage heat；
QI invigorating pressure piping (20): communicate with storage tank (1) inside, be used for storage tank (1) interior supercharging；
Sensor: include monitoring storage tank (1) inside, propellant intake line, propellant output pipe and gas exhaust piping upward pressure, flow, liquid level, the pressure transducer (15) of temperature, flow transducer (8,11,17), differential pressure liquid level sensor (4) and temperature sensor；
Data collecting instrument (24): be connected with sensor, gathers the data of sensor and is transferred to computer (22)；
Computer (22): receive the data of sensor, and after making logical judgment, send order by logic controller (23) and control the open and close of electromagnetic valve and circulating pump (9), it is achieved meet the Automated condtrol of thermodynamics aerofluxus disciplinarian request。
2. a kind of analog systems for thermodynamics gas extraction system research working in room temperature warm area according to claim 1, it is characterized in that, described heat exchange injection apparatus (3) includes three double pipe heat exchangers (31), liquor separator (32), mounting flange (30) and ejector (33)
Described three double pipe heat exchangers (31) include the interior pipe (35), intervalve (36) and the outer tube (37) that are arranged concentrically,
Interlayer between described interior pipe (35), described intervalve (36) and outer tube (37) connects with described liquor separator (32) simultaneously, constitute a round trip heat exchanger channels of three double pipe heat exchangers (31)
Another heat exchanger channels that interlayer is three double pipe heat exchangers (31) between described interior pipe (35) and intervalve (36), and the interlayer between described interior pipe (35) and intervalve (36) connects inlet tube (40) and outlet (38)
Described mounting flange (30) is welded to connect with interior pipe (35), intervalve (36) and outer tube (37) simultaneously, and mounting flange (30) center is offered and the internal opening connected of interior pipe (35)
Described ejector (33) is arranged on outer tube (37) outer wall, and and interlayer between intervalve (36) with outer tube (37) communicate。
3. a kind of analog systems for thermodynamics gas extraction system research working in room temperature warm area according to claim 2, it is characterized in that, described liquor separator (32) is the cavity body structure being made up of end face and bottom surface, the bottom surface of described liquor separator (32) simultaneously with interior pipe (35), intervalve (36) and outer tube (37) connect, the circular hole communicated with interior pipe (35) is offered in the middle of the bottom surface of described liquor separator (32), weld access hole (34) is offered around circular hole, interlayer between described weld access hole (34) and intervalve (36) with outer tube (37) communicates。
4. a kind of analog systems for thermodynamics gas extraction system research working in room temperature warm area according to claim 2, it is characterized in that, total some groups of described ejector (33), often organize ejector (33) and be positioned in a plane of outer tube (37) outer wall, it be arranged in parallel between different groups ejector (33), often organize ejector (33) and have 4, quadrant week tangential distribution is become along outer tube (37) outer wall, described ejector (33) is the L-shaped playpipe smoothly transitted, arrival end vertical connection is on outer tube (37) sidewall, the port of export is parallel to outer tube (37) circumference tangential direction。
5. a kind of analog systems for thermodynamics gas extraction system research working in room temperature warm area according to claim 2, it is characterized in that, described storage tank (1) two ends respectively upper end end socket (28) and lower end end socket, upper end end socket (28) is connected with storage tank main body by adpting flange (27), realize opening wide and airtight of storage tank (1), described mounting flange (30) is fixed on the inside bottom of storage tank (1) lower end end socket, and it is provided externally with circulation line at storage tank (1), this circulation line head end is connected on the end socket of lower end, and connect with storage tank (1) inside, this circulation line tail end connects by the opening on mounting flange (30) and interior pipe (35) are internal。
6. a kind of analog systems for thermodynamics gas extraction system research working in room temperature warm area according to claim 5, it is characterized in that, by circulation line head end caudad direction, circulation line is sequentially set with electromagnetic valve (5), valve (6), filter (7), flow transducer (8), circulating pump (9), flow transducer (11) and electromagnetic valve (13), throttling pipeline is drawn between circulating pump (9) and flow transducer (11), and this throttling pipeline is connected with inlet tube (40), throttling pipeline is provided with electromagnetic valve (10) and choke valve (12)。
7. a kind of analog systems for thermodynamics gas extraction system research working in room temperature warm area according to claim 1, it is characterized in that, described gas exhaust piping is sequentially set with stop valve (16), flow transducer (17) and stop valve (18), described propellant output pipe is provided with electromagnetic valve (19), described QI invigorating pressure piping (20) is provided with stop valve (21), described QI invigorating pressure piping (20) is connected with nitrogen cylinder, described propellant intake line is provided with valve (29), described pressure transducer (15) connects by pipeline is directly internal with storage tank (1)。
8. a kind of analog systems for thermodynamics gas extraction system research working in room temperature warm area according to claim 1, it is characterised in that described storage tank (1) outer wall offers observation window (26)。
9. a kind of analog systems for thermodynamics gas extraction system research working in room temperature warm area according to claim 1, it is characterized in that, described differential pressure liquid level sensor (4) is arranged in storage tank (1) outer bottom, for measuring the liquid level of storage tank (1), the gas phase pressure guiding pipe being connected with differential pressure liquid level sensor (4) and liquid phase pressure guiding pipe are all arranged along storage tank (1) internal face；One plumbing bar (2) is set in storage tank (1), plumbing bar (2) is equidistantly provided with temperature sensor。
10. a kind of analog systems for thermodynamics gas extraction system research working in room temperature warm area according to claim 1, it is characterized in that, described heater (14) is made up of the semi-open type heating watt of four power adjustable being close to storage tank (1) outside wall surface。
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| 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 |
| CN108163398A (en) * | 2018-01-12 | 2018-06-15 | 中国矿业大学 | A kind of efficiently controlling pressure cryogenic propellant storage tank with induction apparatus |
| CN108386708A (en) * | 2018-01-12 | 2018-08-10 | 中国矿业大学 | A kind of pressure control low-temperature storage tank with injection 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 |
| CN112550779A (en) * | 2020-11-27 | 2021-03-26 | 中国运载火箭技术研究院 | Ground integration test device and method for low-temperature propellant thermodynamic exhaust system |
| CN113963618A (en) * | 2021-09-09 | 2022-01-21 | 西北工业大学 | Extrusion type liquid rocket engine working process simulation device |
| CN113984826A (en) * | 2021-10-22 | 2022-01-28 | 西安交通大学 | Visual experimental device for observing fluid phase state in low-temperature bare-wall storage tank |
| CN114384197A (en) * | 2022-01-13 | 2022-04-22 | 西安交通大学 | Experimental apparatus is observed to no pump drive's thermodynamics exhaust system flow state |
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| 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 |
| CN108163398A (en) * | 2018-01-12 | 2018-06-15 | 中国矿业大学 | A kind of efficiently controlling pressure cryogenic propellant storage tank with induction apparatus |
| CN108386708A (en) * | 2018-01-12 | 2018-08-10 | 中国矿业大学 | A kind of pressure control low-temperature storage tank with injection apparatus |
| 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 |
| CN112550779A (en) * | 2020-11-27 | 2021-03-26 | 中国运载火箭技术研究院 | Ground integration test device and method for low-temperature propellant thermodynamic exhaust system |
| CN113963618A (en) * | 2021-09-09 | 2022-01-21 | 西北工业大学 | Extrusion type liquid rocket engine working process simulation device |
| CN113963618B (en) * | 2021-09-09 | 2024-02-02 | 西北工业大学 | Working process simulation device of extrusion type liquid rocket engine |
| CN113984826A (en) * | 2021-10-22 | 2022-01-28 | 西安交通大学 | Visual experimental device for observing fluid phase state in low-temperature bare-wall storage tank |
| CN114384197A (en) * | 2022-01-13 | 2022-04-22 | 西安交通大学 | Experimental apparatus is observed to no pump drive's thermodynamics exhaust system flow state |
| 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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