CN105243931A - Solid fuel combustion experimental device based on variable gravity condition - Google Patents
Solid fuel combustion experimental device based on variable gravity condition Download PDFInfo
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- CN105243931A CN105243931A CN201510751750.7A CN201510751750A CN105243931A CN 105243931 A CN105243931 A CN 105243931A CN 201510751750 A CN201510751750 A CN 201510751750A CN 105243931 A CN105243931 A CN 105243931A
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Abstract
The invention discloses a solid fuel combustion experimental device based on variable gravity conditions. The solid fuel combustion experimental device is characterized by comprising a variable gravity falling body device, an experimental cabin device and a deceleration recycling system, wherein the experimental cabin device comprises an ignition control system, a solid fuel combustion system and a data acquisition system; the variable gravity falling body device creates an variable gravity experimental environment for the solid fuel combustion system; the ignition control system ignites solid fuel so that the solid fuel can combust; the solid fuel combustion system provides experimental objects; and the data acquisition system obtains combustion temperature and image characteristic parameters of the solid fuel. The solid fuel combustion experimental device can provide variable gravitational field environments, and can provide an experimental platform for carrying out comprehensive and systematic study on the solid fuel combustion phenomenon observation and the like under different low-gravity environment conditions.
Description
Technical field
The present invention relates to low gravitation combustion experiment field, being specifically related to a kind of solid fuel ignition experimental provision based on becoming under gravity condition.
Background technology
The scientific experiment carried out under state of weightlessness contributes to exploring physics law better, the research of solid combustion test is in the past under Chang Chongli or microgravity environment condition mostly, microgravity border is provided by Microgravity Falling Tower, the research of the solid fuel ignition test become under gravity condition is seldom related to, becoming the experiment of gravity solid fuel ignition is under terrestrial gravitation acceleration condition, space is provided to become gravity environment, the experiment of simulated solid fuel burning situation to burning test.
Summary of the invention
The invention provides a kind of for studying the device becoming the test of gravity solid combustion, making up this vacancy.The fundamental purpose of experiment completes the research to solid fuel ignition test under change gravity condition on the ground.
For achieving the above object, the technical solution adopted in the present invention is:
For achieving the above object, the invention provides a kind of solid fuel ignition experimental provision based on becoming under gravity condition, described change gravity solid fuel ignition experimental provision is divided into 3 parts, namely becomes gravity drop system, Laboratory Module device and deceleration recovery system; Laboratory Module device comprises Iganition control system, solid fuel combustion system, data acquisition system (DAS);
Described change gravity drop system comprises balancing weight, PLC, adjustable frequency motor, Laboratory Module, fixed pulley and hang spring, by the axial organ of described balancing weight, adjustable frequency motor, fixed pulley and Laboratory Module by hang spring be connected formation one become gravity drop system;
Described balancing weight only does rectilinear motion between two fixing upright guide rails, and it is for the gravity in balance test cabin, and the acceleration that Laboratory Module is fallen is provided by motor; Described adjustable frequency motor, is fixed on architecture storey 31-32 rice position, access three-phase alternating current, and the control circuit of adjustable frequency motor is controlled the rotating speed of motor by controlling electric frequency device by PLC; Steering order, by programming setup control algorithm, is communicated to frequency converter by described PLC;
Described Laboratory Module comprises Iganition control system, solid fuel combustion system and data acquisition system (DAS); Its ingredient is columniform fuel flask and spherical nose cone, and wherein nose cone is balancing weight, and its effect is the center of gravity reducing Laboratory Module, makes center of gravity keep vertically, avoids the swing occurred in the process fallen in horizontal direction;
Described fuel flask comprises experimental substrate, polyfoam filling material, Digital Video, wireless receiver, PLC ignition controller, direct supply, ignition circuit, heating wire, combustion supporter, solid fuel, thermopair, background curtain wall, data acquisition unit; Wherein experimental substrate is the basis of fuel flask, is connected with nose cone by polyfoam, for carrying experimental provision, slows down the impulsive force in the moderating process of whereabouts; Described Digital Video is fixed by polyfoam filling material, makes Digital Video and solid fuel be positioned at sustained height, and in order to obtain clearly image, the distance of solid fuel and Digital Video camera lens is set as about 15cm; Described solid fuel is supported by combustion supporter, and heating wire is positioned at solid-fuelled below, and for heat solid fuel, described wireless receiver, PLC ignition controller, power supply, ignition circuit are in series and form wireless ignition control circuit; Described background curtain wall provides background to set off for Digital Video shooting, is also the installation foundation of thermopair simultaneously; The temperature value of flame is converted to electric signal and receives storage by data acquisition unit by described thermopair;
Described Iganition control system comprises wireless signal receiver, PLC ignition controller, power supply, ignition circuit and heating wire; Described Iganition control system, for receiving Remote ignition signal, lights solid fuel;
Described solid fuel combustion system comprises solid fuel, combustion supporter;
Described data acquisition system (DAS) comprises Digital Video, thermopair and data acquisition unit; Described thermopair is positioned at above solid fuel, and spaced set one is arranged, for detecting flame or the plume temperature of different parts; Described data acquisition unit receives the electric signal that thermopair produces, and is carried out the amplification of electric signal by the amplifying circuit of device interior, and record stores;
Described solid fuel combustion apparatus is the low gravitation level needed for gravitational compartment providing Laboratory Module by described change gravity drop system, lighting of solid is completed by described Iganition control system, by described solid combustion system, the experimental subjects of Germicidal efficacy is provided, is obtained temperature and the characteristics of image of flame by described data acquisition system (DAS).
Further, described Laboratory Module realizes becoming the object of gravity by becoming gravity installation.
Further, described change gravity installation changes the whereabouts acceleration of Laboratory Module by adjustable frequency motor.
Further, described adjustable frequency motor is by the setting of PLC to frequency converter.
Further, described Laboratory Module carries out IGNITION CONTROL by wireless telecommunications.
Further, described deceleration recovery system is steadily landed by deceleration shockproof control Laboratory Module.
Compared with prior art, beneficial effect of the present invention is embodied in:
1, can to realize Laboratory Module dropping process acceleration adjustable flexibly in the present invention, make in solid fuel ignition process, different set accekeration can be inputted test, the experimental result enriched and experimental data can be obtained under different accekeration, and possess the feature of performance required by space science experimental facilities, carry out experiment for utilizing change gravity environment in the space solid fuel ignition scientific experiment that I am excessively following and lay a good foundation;
2, the present invention can provide a kind of platform to solid fuel ignition phenomenon observation under low-gravity environment, be not limited to the research to solid-fuelled burning, can also to the research of the combustible burnings such as cable conductor, the combustion characteristic of cable conductor under exploration change gravity, to electronic circuit fireproof research under low-gravity environment etc.;
3, wireless portfire of the present invention, can be implemented in narrow space and carry out remote firing, to compare the method for manual firing, it is simple to operate, lighting of fuel can be realized fast and effectively, avoid may, to the touching of Experimental Establishment, avoiding irrelevant factor on the impact of experimental data in manual firing's process simultaneously;
4, data acquisition system (DAS) of the present invention can gather view data and the temperature data of experiment, different frequency temperature acquisition data can be obtained, realize different acquisition demand, simultaneously can experimentally object, adjustment member setting position obtains required experimental data.The variation of practical function.
Accompanying drawing explanation
Fig. 1 is change gravity drop experimental provision schematic diagram of the present invention;
Fig. 2 is Laboratory Module planimetric map of the present invention;
Fig. 3 a is fuel flask interior layout schematic diagram of the present invention;
Fig. 3 b is fuel flask internal placement vertical view of the present invention;
Fig. 4 is that schematic diagram arranged by thermopair of the present invention;
Fig. 5 is adjustable frequency motor speed change operating diagram of the present invention;
Fig. 6 is IGNITION CONTROL schematic diagram of the present invention;
Fig. 7 is the experiment flow figure of embodiment;
Fig. 8 exports the time dependent schematic diagram of data.
In accompanying drawing, the list of parts of each label representative is as follows:
1 is balancing weight; 2 is PLC; 3 is adjustable frequency motor; 4 is Laboratory Module; 5 is fixed pulley; 6 is hang spring; 7 is fuel flask; 8 is nose cone; 9 is experimental substrate; 10 is polyfoam filling material; 11 is Digital Video; 12 is wireless signal receiver; 13 is PLC ignition controller; 14 is direct supply; 15 is ignition circuit; 16 is heating wire; 17 is combustion supporter; 18 is solid fuel; 19 is thermopair; 20 is background curtain wall; 21 is data acquisition unit; 22 is deceleration recovery system.
Embodiment
Be further described of the present invention below in conjunction with drawings and Examples.
In the present embodiment, as shown in Figure 1, Figure 2, a kind of solid fuel ignition experimental provision based on becoming under gravity condition shown in Fig. 3 a, Fig. 3 b, comprise balancing weight 1, PLC 2, adjustable frequency motor 3, Laboratory Module 4, fixed pulley 5 and hang spring 6, the shaft coupling of balancing weight 1, adjustable frequency motor 3, fixed pulley 5. and Laboratory Module 4 to be cascaded composition kinematic system by hang spring 6.PLC 2 and adjustable frequency motor 3 become gravity drop system by wiring composition; Wireless signal receiver 12, PLC ignition control device 13, direct supply 14, ignition circuit 15 and heating wire 16 are connected to form an Iganition control system by wire; Digital Video 11, thermopair 19 and data acquisition unit 21 form data acquisition system (DAS), detect, record experimental data.Experimental substrate 9, polyfoam filling material 10, background curtain wall 20 are for fixing experimental provision; Combustion supporter 17 and solid fuel 18 formation of solid polycomplex combustion system.Experiment is landed and is terminated to be completed by deceleration recovery system 22.
In the present embodiment, as shown in Figure 1, this change gravity drop device is by this few part of balancing weight 1, PLC 2, adjustable frequency motor 3, Laboratory Module 4, fixed pulley 5 and hang spring 6, wherein balancing weight 2 can do upper and lower rectilinear motion between two upright guide rails, PLC 2, adjustable frequency motor 3 and fixed pulley 5 are fixed on and become on gravity experiment table, adjustable frequency motor is placed on architecture storey 31-32 rice position, and experimental provision is approximately 30.5m apart from floor level.Wherein PLC 2, needs the control algolithm of writing motor, external with frequency converter, carries out the reception and registration of instruction; Adjustable frequency motor 3 accesses three-phase alternating current, the frequency of electric current is controlled by frequency converter by PLC 2, the shaft coupling of adjustable frequency motor 3 is connected with hang spring 6, carry out the transmission of power, the about 100mm of wheel circle external diameter, the outer cause support that fixed pulley 5 is fixed on platform is fixed, and reduces the friction of lifting rope.Balancing weight 1 and adjustable frequency motor 3, fixed pulley 5 and Laboratory Module 4 are coupled together by lifting rope 6 in turn, forms a kinematic system.
As shown in Figure 2, this figure is the Laboratory Module floor map of the solid fuel ignition experimental provision based on becoming under gravity condition of the present invention, Laboratory Module 4 is made up of fuel flask 7 and nose cone 8, wherein fuel flask 7 is high 500mm, the cylindrical structural of external diameter 420mm is that the steel plate of 1mm forms for materials processing with thickness; Nose cone 8 for diameter be the spherical weights block of 420mm, it is characterized in that, reduce the impact of air resistance, increase the intensity in falling body experiment cabin 4 simultaneously, stablize center of gravity, can ensure the approximate maintenance vertical state of Laboratory Module 4 in dropping process, fuel flask 7 and nose cone 8 are fixed by stainless steel bolt, be convenient to dismounting repacking, use sealant tape sealing.
As shown in Figure 3 a and Figure 3 b shows, this figure is the fuel flask arrangenent diagram of the solid fuel ignition experimental provision based on becoming under gravity condition of the present invention; It is made up of Digital Video 11, wireless signal receiver 12, PLC ignition controller 13, direct supply 14, ignition circuit 15, heating wire 16, combustion supporter 17, solid fuel 18, thermopair 19, data acquisition unit 21, background curtain wall 20 and experimental substrate 9; The major equipment of experiment is all fixed on experimental substrate 9, substrate is the circular plank of diameter 400mm, be connected with nose cone 8 by polyfoam, adopt 12V lead accumulator 14 for the same power supply of experiment, power supply is between PLC and ignition circuit, and the equipment on experimental substrate 9 mainly contains Digital Video 11, wireless receiver 12, direct supply 14, ignition circuit 15, combustion supporter 17, background curtain wall 20 and data acquisition unit 21; Combustion supporter is positioned at the top of ignition circuit 15, ignition circuit 15 is positioned at substrate center about 50mm to the right, solid fuel 18 is supported by the combustion supporter 17 of diameter 1mm, alloy that is strong by heat resistance, low heat conductivity is made, and be fixed in firing circuit top, the below of solid fuel 18 is igniting heating wire 16, and solid fuel 18 is the inflammable solid of 10mm for diameter, easily distils; 3 diameters are used to be about the thermopair 19 of 0.5mm in experiment, be fixed on background curtain wall 20, flame temperature is measured, as shown in Figure 4, temperature data carries out collection by off-line type data acquisition unit 21 and stores deployment scenarios, and data acquisition unit 21 can gather No. 3 thermopair data simultaneously, sample frequency is set to 5HZ usually, can reach 25HZ, namely in the present embodiment, the sample frequency of data acquisition unit 21 is 5 to 25HZ, and resolution is 0.5 DEG C; Digital Video 11, solid fuel 18 are positioned at sustained height, and for obtaining image clearly, Digital Video 11 selects the video camera of 50 frames per second to carry out record to experimentation, and solid fuel 18 is set as 15cm to 17cm with the distance of Digital Video 11; Wherein Digital Video 11, wireless signal receiver 12, PLC ignition controller 13, power supply 14, ignition circuit 15, data acquisition unit 21 carry out filling supporting by polyfoam.
As shown in Figure 4, this figure is the layout Local map of solid fuel ignition temperature-detecting device thermopair 19, and the right side is left view, a left side is front view, wherein 3 thermopairs 19 equidistantly arrange and are positioned at directly over solid fuel 18, and spacing is 3mm, and nethermost thermopair 19 is apart from solid fuel 18 approximately 3mm.
As shown in Figure 5, this figure is the composition frame chart of adjustable frequency motor work, it is by PLC 2, frequency converter and motor 3 form, principle of work is: be entered into by the motor control program write in PLC 2, experiment starts rear PLC 2 and sends control signal, and frequency converter receives and changes corresponding power frequency, makes motor export corresponding rotating speed.
As shown in Figure 6, this figure is the composition frame chart of ignition process, and it is made up of the solenoid valve in wireless remote control device, wireless signal receiver 12, PLC ignition controller 13, ignition circuit 15, heating wire 16; Principle of work: wireless signal receiver 12, PLC ignition controller 13, power supply 14, ignition circuit 15 and heating wire 16 form Iganition control system, by receiving ground ignition signal, through wireless receiver 12, signal is communicated to PLC ignition controller 13, PLC ignition controller 13 receives and carries out control algorithm, control solenoid valve in ignition circuit 15, heating wire 5 is energized, and direct supply 14 is powered for heating wire 16.
As shown in Figure 7, this figure is the experiment flow figure of the embodiment of the present invention;
Performing step:
The early-stage preparations stage:
1, the installation of equipment is carried out according to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5;
2, by power supply 14 and ignition circuit 15, heating wire 16 forms series circuit, and the solenoid valve in ignition circuit 15 connects with PLC ignition controller 13, and PLC ignition controller 13 is connected with wireless signal receiver 12, composition wireless controller; Direct supply 14 is wireless receiver 12, PLC 13, data acquisition unit 21, ignition circuit 15 are powered; Adjustable frequency motor 3 accesses three-phase alternating current;
3. pair PLC 2 and PLC ignition controller 13 carry out programming and set control algolithm program;
Experimental phase:
1. open direct supply 14, start data acquisition unit 21;
2. manual unlocking Digital Video 11, brings into focus, sets recording 50 frame per second, Digital Video is aimed at solid fuel, make them be in same level height, fixed by polyfoam filling material 10, off-line record experimental phenomena;
3. telepilot sends ignition order, and after solid is lighted, heating wire 16 stops energising; After flameholding, start experiment
4. start PLC 2, PLC and send motor start-up order;
5., according at the Laboratory Module whereabouts accekeration that PLC 2 sets in advance, make Laboratory Module be in corresponding acceleration and fall, change Laboratory Module operating mode by amendment accekeration, also can set amplitude in advance to Laboratory Module operating conditions
6. experiment terminates, and stops adjustable frequency motor 3, by deceleration recovery system 22 recovery experiment cabin, realizes Laboratory Module and steadily land.Open Laboratory Module afterwards, close direct supply 14, close Digital Video 11 and close data acquisition unit 21;
Later processing stage:
1, the video of Digital Video record is carried out graphical analysis, obtain flame relevant feature parameters under different gravity condition, as flame forms and oscillation frequency feature etc.;
2, the temperature data in data acquisition unit is carried out analysis and obtain the time dependent relation of temperature, as shown in Figure 8, its gravity horizontal is 0.15 to schematic diagram, and wherein setting Laboratory Module whereabouts time instant was zero moment.
In experimentation, different accekeration can be inputted and test, under different accekeration, different experimental phenomenas and experimental data can be obtained.
It should be noted last that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted.Although with reference to embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, modify to technical scheme of the present invention or equivalent replacement, do not depart from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (6)
1., based on the solid fuel ignition experimental provision become under gravity condition, it is characterized in that, described change gravity solid fuel ignition experimental provision is divided into 3 parts, namely becomes gravity drop system, Laboratory Module device and deceleration recovery system; Laboratory Module device comprises Iganition control system, solid fuel combustion system, data acquisition system (DAS);
Described change gravity drop system comprises balancing weight (1), PLC (2), adjustable frequency motor (3), Laboratory Module (4), fixed pulley (5) and hang spring (6), by described balancing weight (1), adjustable frequency motor (3), fixed pulley (5) and Laboratory Module (4) by hang spring (6) be connected formation one become gravity drop system;
Described balancing weight (1) only does rectilinear motion between two fixing upright guide rails, and it is for the gravity of balance test cabin (4), and the acceleration that Laboratory Module is fallen is provided by motor; Described adjustable frequency motor (3), is fixed on architecture storey 31-32 rice position, access three-phase alternating current, and the control circuit of adjustable frequency motor is controlled the rotating speed of motor by controlling electric frequency device by PLC (2); Steering order, by programming setup control algorithm, is communicated to frequency converter by described PLC (2);
Described Laboratory Module (4) comprises Iganition control system, solid fuel combustion system and data acquisition system (DAS); Its ingredient is columniform fuel flask (7) and spherical nose cone (8), wherein nose cone (8) is balancing weight, its effect is the center of gravity reducing Laboratory Module, makes center of gravity keep vertically, avoids the swing occurred in the process fallen in horizontal direction;
Described fuel flask (7) comprises experimental substrate (9), polyfoam filling material (10), Digital Video (11), wireless receiver (12), PLC ignition controller (13), direct supply (14), ignition circuit (15), heating wire (16), combustion supporter (17), solid fuel (18), thermopair (19), background curtain wall (20), data acquisition unit (21); Wherein experimental substrate (9) is the basis of fuel flask (7), is connected with nose cone (8) by polyfoam, for carrying experimental provision, slows down the impulsive force in the moderating process of whereabouts; Described Digital Video (11) is fixed by polyfoam filling material (10), Digital Video (11) and solid fuel (18) is made to be positioned at sustained height, in order to obtain clearly image, solid fuel (18) is set as about 15cm with the distance of Digital Video (11) camera lens; Described solid fuel (18) is supported by combustion supporter (17), heating wire (16) is positioned at the below of solid fuel (18), for heat solid fuel (18), described wireless receiver (12), PLC ignition controller (13), direct supply (14), ignition circuit (15) are in series and form wireless ignition control circuit; Described background curtain wall (20) provides background to set off for Digital Video (11) shooting, is also the installation foundation of thermopair (19) simultaneously; The temperature value of flame is converted to electric signal and receives storage by data acquisition unit (21) by described thermopair (19);
Described Iganition control system comprises wireless signal receiver (12), PLC ignition controller (13), power supply (14), ignition circuit (15) and heating wire (16); Described Iganition control system, for receiving Remote ignition signal, lights solid fuel;
Described solid fuel combustion system comprises solid fuel (18), combustion supporter (17);
Described data acquisition system (DAS) comprises Digital Video (11), thermopair (19) and data acquisition unit (21); Described thermopair (19) is positioned at above solid fuel, and spaced set one is arranged, for detecting flame or the plume temperature of different parts; Described data acquisition unit (21) receives the electric signal that thermopair (19) produces, and is carried out the amplification of electric signal by the amplifying circuit of device interior, and record stores;
Described solid fuel combustion apparatus is the low gravitation level needed for gravitational compartment providing Laboratory Module by described change gravity drop system, lighting of solid is completed by described Iganition control system, by described solid combustion system, the experimental subjects of Germicidal efficacy is provided, is obtained temperature and the characteristics of image of flame by described data acquisition system (DAS).
2. the solid fuel ignition experimental provision based on becoming under gravity condition according to claim 1, is characterized in that, described Laboratory Module realizes becoming the object of gravity by becoming gravity installation.
3. the solid fuel ignition experimental provision based on becoming under gravity condition according to claim 1, is characterized in that, described change gravity installation changes the whereabouts acceleration of Laboratory Module by adjustable frequency motor.
4. the solid fuel ignition experimental provision based on becoming under gravity condition according to claim 1, it is characterized in that, described adjustable frequency motor is by the setting of PLC to frequency converter.
5. the solid fuel ignition experimental provision based on becoming under gravity condition according to claim 1, it is characterized in that, described Laboratory Module carries out IGNITION CONTROL by wireless telecommunications.
6. the solid fuel ignition experimental provision based on becoming under gravity condition according to claim 1, it is characterized in that, described deceleration recovery system is steadily landed by deceleration shockproof control Laboratory Module.
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| CN201510751750.7A CN105243931B (en) | 2015-11-06 | 2015-11-06 | A kind of solid fuel ignition experimental provision under the gravity condition based on change |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110389193A (en) * | 2019-07-15 | 2019-10-29 | 江西科技师范大学 | It simulates and stablizes the two of combustion adjuvant burning situation device |
| CN110723318A (en) * | 2019-10-18 | 2020-01-24 | 合肥工业大学 | Comprehensive experimental device for research on fire behavior and combustion characteristics under overweight environmental conditions |
| CN110758780A (en) * | 2019-09-27 | 2020-02-07 | 中国矿业大学 | Device and method for observing combustion of aerospace equipment in weightless state |
| CN111156104A (en) * | 2019-11-12 | 2020-05-15 | 湖南云顶智能科技有限公司 | Gravity tower falling test system and method for detonation engine |
| CN111398513A (en) * | 2020-04-02 | 2020-07-10 | 中国矿业大学 | Device and method for detecting single-particle combustion process with high image resolution |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110389193A (en) * | 2019-07-15 | 2019-10-29 | 江西科技师范大学 | It simulates and stablizes the two of combustion adjuvant burning situation device |
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| CN110758780B (en) * | 2019-09-27 | 2022-05-06 | 中国矿业大学 | Device and method for observing combustion of aerospace equipment in weightless state |
| CN110723318A (en) * | 2019-10-18 | 2020-01-24 | 合肥工业大学 | Comprehensive experimental device for research on fire behavior and combustion characteristics under overweight environmental conditions |
| CN110723318B (en) * | 2019-10-18 | 2023-03-07 | 合肥工业大学 | Comprehensive experimental device for research on fire behavior and combustion characteristics under overweight environmental conditions |
| CN111156104A (en) * | 2019-11-12 | 2020-05-15 | 湖南云顶智能科技有限公司 | Gravity tower falling test system and method for detonation engine |
| CN111398513A (en) * | 2020-04-02 | 2020-07-10 | 中国矿业大学 | Device and method for detecting single-particle combustion process with high image resolution |
| CN111398513B (en) * | 2020-04-02 | 2021-11-05 | 中国矿业大学 | Device and method for detecting single-particle combustion process with high image resolution |
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| CN105243931B (en) | 2017-09-29 |
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