CN103513002A - Device for ignition and combustion of primary boron product with high energy density laser - Google Patents
Device for ignition and combustion of primary boron product with high energy density laser Download PDFInfo
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- CN103513002A CN103513002A CN201310419854.9A CN201310419854A CN103513002A CN 103513002 A CN103513002 A CN 103513002A CN 201310419854 A CN201310419854 A CN 201310419854A CN 103513002 A CN103513002 A CN 103513002A
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Abstract
The invention relates to an ignition and combustion testing device, and aims to provide a device for ignition and combustion of a primary boron product with high energy density laser. The device comprises an ignition module, an atmosphere control module, a combustion diagnostic module, and a data recording module, wherein the ignition module comprises a high energy density laser device and a transparent ignition combustion tube, a laser tube is fixed on a base via a laser tube support frame, the transparent ignition combustion tube is arranged on an iron stand, and a sample bracket is arranged in the center of the transparent ignition combustion tube. The device provided by the invention can rapidly heat a primary boron product sample to a temperature above the boiling point of boron oxide in several milliseconds, which is far better than the conventional electric heating ignition manner, and can realize rapid ignition and complete combustion of the primary boron product. The laser device has low electric power, and can be used after being supplied with 220V family electricity, resulting in good generality. The laser heating range is centralized, and the energy utilization efficiency is high.
Description
Technical field
The present invention relates to a kind of ignition test unit, particularly the device of boron product ignition.
Background technology
Boron has high quality calorific value and volume calorific value, consisting of propellant specific impulse products of combustion good dispersion, also can significantly reduce nozzle throat two-phase flow loss, be considered to the filler of a kind of high-quality in propellant.Boron-based fuel-rich is in burning process once, due to environment oxygen deprivation, temperature is lower, fully ignition, the primary combustion product that contains a large amount of boron particles enters afterburning chamber from gas generation chamber, carry out blending with air and complete burning, and discharge large calorimetric, the superior energy of boron-based fuel-rich mainly carries out secondary combustion in afterburning chamber to be given full play of.So study the ignition of a boron product, guarantee its smooth ignition burning in afterburning chamber, realize efficient burning and high-energy and discharge, extremely important to the integral combustion of Boron-Based Fuel-Rich Propellant.
Because a large amount of boron particles surface comprising in a boron product is wrapped in one deck boron oxide shell, its boiling point is up to 2320K, in laboratory, be difficult to reach rapidly the igniting that high temperature like this is realized a boron product, seriously restricted the experimental study of a boron product ignition characteristic.Therefore how to realize quick, a sufficient ignition and combustion of boron product and seem particularly important.An existing boron product portfire is difficult to realize this goal.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes the deficiencies in the prior art, and a kind of device of realizing the ignition of a boron product with high-energy-density laser is provided.
For technical solution problem, solution of the present invention is:
A kind of device of realizing the ignition of a boron product with high-energy-density laser is provided, comprises for placing the sample holder of boron product; This device is comprised of ignition module, atmosphere adjustment module, combustion diagnosis module and data recordin module, and wherein, ignition module comprises high energy density laser and transparent igniting flame tube; It is the laser via that is filled with inert protective gas that high energy density laser has the laser tube ，Qi hollow part of a hollow tubular, in the wall of laser tube tubular structure, is provided with cooling water pipeline; Laser tube is fixed on base by laser tube bracing frame, and protecting sheathing is connected to base by laser tube cover in the inner; Laser tube transmitting terminal is positioned at a side of laser tube, and relevant position is provided with the through hole by laser on protecting sheathing; Transparent igniting flame tube is placed on iron stand, and described sample holder is located at transparent igniting flame tube center, and sample holder and laser tube transmitting terminal are oppositely arranged, and are provided for the through hole by laser on the tube wall of between;
Described atmosphere adjustment module comprises gas cabinet, electronic flow controller and the flowrate control valve connecting successively by pipeline; Flowrate control valve joins by one end of pipeline and transparent igniting flame tube, and the other end of transparent igniting flame tube is uncovered shape;
Described combustion diagnosis module comprises high-speed camera, fiber spectrometer, thermal infrared imager and physics EmS; Described data recordin module comprises computing machine, and computing machine is connected to laser tube, high-speed camera, fiber spectrometer, thermal infrared imager, physics EmS and electronic flow controller by signal wire respectively.
In the present invention, the center line of described laser tube and transparent igniting flame tube is and intersects vertically, and between laser tube and laser tube transmitting terminal, is provided with one and is the reflective mirror of 45 ° of angles with laser tube center line.
In the present invention, have jacket structuredly in the wall of the tubular structure of described laser tube, this is jacket structured is cooling water pipeline.Cooling water system is to control the temperature of laser tube.
Protecting sheathing is resistant to elevated temperatures black shell, infringement device and experimenter being caused for the laser offset that prevents from causing due to laser failure.Gas flow control valve, can carry out gas flow control and gas and switch.The circuit of laser instrument, high-speed camera, thermal infrared imager, light spectrometer can synchronously be triggered or be stopped by computing machine or physical switch.Laser power can carry out fine adjustment by computing machine, and can in experimentation, realize the linear change of laser power.
With respect to prior art, beneficial effect of the present invention is:
1. can heat rapidly a boron product sample, make sample be warmed up to rapidly 2320K(boron oxide boiling point in several milliseconds) more than, be much better than traditional electrical thermal ignition mode, can realize the rapid-ignition of a boron product and fully burning.
2. laser instrument electric power low (generally only several hectowatts), access 220V household electricity can be used, and versatility is good.In LASER HEATING range set, energy utilization efficiency is high, tests a required boron product sample size few.
3. can be by computer control fine adjustment laser power, and can in experimentation, realize the linear change of laser power, for experimenter provides abundanter ignition schemes.
4. boron product sample ignition in pipeline, steady air current, is not subject to extraneous factor and disturbs, and pipeline employing transparent material, can realize the accessible observation of high-speed camera, thermal infrared imager, light spectrometer.
5. can be by computer control, the ambiance during to a boron product sample combustion is carried out kind easily and is switched and flow control.
6. can carry out Real-time Collection and survey record to the reaction process of boron product sample ignition, surface temperature, emission spectrum, for the analysis of a boron product ignition characteristic provides the experimental basis of multi-angle.
7. realize the synchronize triggering of igniting with observation assembly, guaranteed the completeness and efficiency that observation data gathers.
8. realized the computer integrated control of laser power setting, the setting of experiment atmosphere, igniting and the start and stop of observation assembly, experimental data collection and record, for experimental implementation provides very big facility.
9. this device is laser configurations protecting sheathing, can prevent the injury that laser offset that equipment failure causes may cause experimenter and device.In addition, be also provided with physics EmS, when causing danger, can cut off rapidly installation's power source.Device integral body has higher security.
Accompanying drawing explanation
Fig. 1 realizes the installation drawing of boron product ignition with high-energy-density laser.
Fig. 2 is high energy density laser assembly assumption diagram;
Fig. 3 is the vertical view of product in Fig. 1;
Fig. 4 is transparent igniting combustion pipe assembly assumption diagram.
In figure, each Reference numeral is: 1 cooling water pipeline; 2 laser vias; 3 laser tubes; 4 laser tube bracing frames; 5 Laser emission ends; 6 bases; 7 protecting sheathings; 8 gas cabinets; 9 electronic flow controllers; 10 flowrate control valves; 11 transparent igniting flame tubes; 12 sample holders; 13 iron stands; 14 computing machines; 15 high energy density lasers; 16 transparent igniting combustion pipes; 17 high-speed cameras; 18 fiber spectrometers; 19 thermal infrared imagers; 20 physics EmSes.
Embodiment
The present invention utilizes high energy density laser to heat a boron product sample in transparent igniting combustion pipe, sample is heated up rapidly, realize rapid-ignition and fully burning, by multiple instrument and equipment, the ignition process of sample is observed, measured and analyzes, and each significant components in device is carried out to computer integrated control.
Below in conjunction with accompanying drawing and example, patent of the present invention is further illustrated.
As shown in Figure 1, the device of realizing the ignition of a boron product with high-energy-density laser is comprised of ignition module, atmosphere adjustment module, combustion diagnosis module and data recordin module, wherein, ignition module comprises high energy density laser 15 and transparent igniting flame tube 11; It is laser via that high energy density laser 15 has the laser tube 3 ，Qi hollow parts of a hollow tubular, is filled with inert protective gas in path.2, in the wall of laser tube 3 tubular structures, have jacket structuredly, this is jacket structured is cooling water pipeline 1.Laser tube 3 is fixed on base 6 by laser tube bracing frame 4, and protecting sheathing 7 is connected to base 6 and laser tube 3 is covered in the inner; Laser tube transmitting terminal 5 is positioned at a side of laser tube 3, and relevant position is provided with the through hole by laser on protecting sheathing 7; Transparent igniting flame tube 11 is placed on iron stand 13, and sample holder 12 is located in transparent igniting flame tube 11, and sample holder 12 is oppositely arranged with laser tube transmitting terminal 5, and is provided for the through hole by laser on the tube wall of between; The center line of laser tube 3 and transparent igniting flame tube 11 is and intersects vertically, and between laser tube 3 and laser tube transmitting terminal 5, is provided with one and is the reflective mirror of 45 ° of angles with laser tube 3 center lines.
Described atmosphere adjustment module comprises gas cabinet 8, electronic flow controller 9 and the flowrate control valve 10 connecting successively by pipeline; Flowrate control valve 10 joins by pipeline and transparent igniting flame tube 11 one end, and the other end of transparent igniting flame tube 11 is uncovered shape;
Described combustion diagnosis module comprises high-speed camera 17, fiber spectrometer 18, thermal infrared imager 19 and physics EmS 20; Described data recordin module comprises computing machine 14, and computing machine 14 is connected to laser tube 3, high-speed camera 17, fiber spectrometer 18, thermal infrared imager 19, physics EmS 20 and electronic flow controller 9 by signal wire respectively.
The present invention adopts high-energy-density laser to light a fire, and laser power is several hectowatts only generally, far below traditional sparking mode, in access 220V household electricity, can use.In the present invention, high-energy-density refers to be enough at short notice (referring generally within 1 second) is heated to the boiling point of 2320K(boron oxide by boron product) more than energy density; Accordingly, high energy density laser refers to and a boron product can be heated to the boiling point of 2320K(boron oxide) above laser instrument.Due to the laser temperature higher (more than 2320K) that laser instrument produces, need to be laser configurations cooling water system, as shown in Figure 2.
Sample ignition in transparent igniting combustion pipe 16 in the present invention, as shown in Figure 4, circular tube structure makes air-flow uniform and stable, is not subject to external interference.And pipeline adopts transparent material, be convenient to equipment observation.
As shown in Figure 1, after device connects, laser power supply, flow control signal, high-speed camera signal, fiber spectrometer signal, thermal infrared imager signal be access computing machine in parallel all, realizes computer integrated control.
During experiment, first a boron product sample is filled into sample holder 12, rear unlatching cooling water pipeline 1, makes chilled water be full of whole pipeline.Before experiment, the gas cylinder in gas cabinet 8 be should open in advance, and gaseous species and the flow of expectation in the control software in computing machine 14, set.After the steady air current in transparent igniting flame tube 11, by the sequence check switch in computing machine 14, connect circuit, laser will penetrate from laser tube transmitting terminal 4, light a boron product sample on sample holder 11.
During experiment, high-speed camera 17, fiber spectrometer 18 and thermal infrared imager 19 are to be controlled by computing machine 14, synchronize to trigger with high energy density laser 15.In ignition process, high-speed camera 17, fiber spectrometer 18 and thermal infrared imager 19 can carry out Real-Time Monitoring to sample, and data transfer to computing machine is shown, experimenter can arrive by computing machine Real Time Observation the situation of sample ignition.Embedded data logging program in computing machine 14, the data that experimenter can utilize this program to obtain high-speed camera 17, fiber spectrometer 18 and thermal infrared imager 19 observations are preserved and subsequent analysis.
When in case of emergency, experimenter can cut off by urgent 20 switches of physics the power supply of laser instrument 3.
Claims (3)
1. with high-energy-density laser, realize the device of boron product ignition, comprise for placing the sample holder of boron product; It is characterized in that, this device is comprised of ignition module, atmosphere adjustment module, combustion diagnosis module and data recordin module, wherein,
Ignition module comprises high energy density laser and transparent igniting flame tube; It is the laser via that is filled with inert protective gas that high energy density laser has the laser tube ，Qi hollow part of a hollow tubular, in the wall of laser tube tubular structure, is provided with cooling water pipeline; Laser tube is fixed on base by laser tube bracing frame, and protecting sheathing is connected to base by laser tube cover in the inner; Laser tube transmitting terminal is positioned at a side of laser tube, and relevant position is provided with the through hole by laser on protecting sheathing; Transparent igniting flame tube is placed on iron stand, and described sample holder is located at transparent igniting flame tube center, and sample holder and laser tube transmitting terminal are oppositely arranged, and are provided for the through hole by laser on the tube wall of between;
Described atmosphere adjustment module comprises gas cabinet, electronic flow controller and the flowrate control valve connecting successively by pipeline; Flowrate control valve joins by one end of pipeline and transparent igniting flame tube, and the other end of transparent igniting flame tube is uncovered shape;
Described combustion diagnosis module comprises high-speed camera, fiber spectrometer, thermal infrared imager and physics EmS; Described data recordin module comprises computing machine, and computing machine is connected to laser tube, high-speed camera, fiber spectrometer, thermal infrared imager, physics EmS and electronic flow controller by signal wire respectively.
2. device according to claim 1, is characterized in that, the center line of described laser tube and transparent igniting flame tube is and intersects vertically, and between laser tube and laser tube transmitting terminal, is provided with one and is the reflective mirror of 45 ° of angles with laser tube center line.
3. device according to claim 1, is characterized in that, has jacket structuredly in the wall of the tubular structure of described laser tube, and this is jacket structured is cooling water pipeline.
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Cited By (8)
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| CN104330519A (en) * | 2014-10-30 | 2015-02-04 | 西北工业大学 | Particle airflow suspension laser ignition experiment device |
| CN104596768A (en) * | 2015-01-13 | 2015-05-06 | 浙江大学 | Device for testing ignition combustion characteristics and propulsive performance of solid fuel micro-thruster |
| CN110454685A (en) * | 2019-08-28 | 2019-11-15 | 河南理工大学 | The infrared test system of flame temperature is fried in a kind of pipeline premix gas explosion |
| CN112443858A (en) * | 2020-11-02 | 2021-03-05 | 南京理工大学 | Distributed light ignition method and device for boron |
| CN113567611A (en) * | 2021-07-19 | 2021-10-29 | 中自环保科技股份有限公司 | Evaluation device and evaluation method of LNT catalyst |
| CN114544704A (en) * | 2022-02-24 | 2022-05-27 | 中国工程物理研究院化工材料研究所 | Mesoscale high heat flux irradiation ignition test system and method |
| CN114687890A (en) * | 2022-04-26 | 2022-07-01 | 常州大学 | High-efficient laser ignition solid fuel combustion device |
| CN114705803A (en) * | 2022-05-13 | 2022-07-05 | 常州大学 | Experimental device capable of safely and continuously igniting and burning |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330519A (en) * | 2014-10-30 | 2015-02-04 | 西北工业大学 | Particle airflow suspension laser ignition experiment device |
| CN104596768A (en) * | 2015-01-13 | 2015-05-06 | 浙江大学 | Device for testing ignition combustion characteristics and propulsive performance of solid fuel micro-thruster |
| CN104596768B (en) * | 2015-01-13 | 2017-04-12 | 浙江大学 | Device for testing ignition combustion characteristics and propulsive performance of solid fuel micro-thruster |
| CN110454685A (en) * | 2019-08-28 | 2019-11-15 | 河南理工大学 | The infrared test system of flame temperature is fried in a kind of pipeline premix gas explosion |
| CN110454685B (en) * | 2019-08-28 | 2021-03-02 | 河南理工大学 | Infrared test system for temperature of explosion flame of premixed gas in pipeline |
| CN112443858B (en) * | 2020-11-02 | 2022-11-04 | 南京理工大学 | Distributed light ignition method and device for boron |
| CN112443858A (en) * | 2020-11-02 | 2021-03-05 | 南京理工大学 | Distributed light ignition method and device for boron |
| CN113567611A (en) * | 2021-07-19 | 2021-10-29 | 中自环保科技股份有限公司 | Evaluation device and evaluation method of LNT catalyst |
| CN113567611B (en) * | 2021-07-19 | 2023-05-09 | 中自环保科技股份有限公司 | Evaluation device and evaluation method for LNT catalyst |
| CN114544704A (en) * | 2022-02-24 | 2022-05-27 | 中国工程物理研究院化工材料研究所 | Mesoscale high heat flux irradiation ignition test system and method |
| CN114544704B (en) * | 2022-02-24 | 2023-09-19 | 中国工程物理研究院化工材料研究所 | Mesoscale high-heat flux irradiation ignition test system and method |
| CN114687890A (en) * | 2022-04-26 | 2022-07-01 | 常州大学 | High-efficient laser ignition solid fuel combustion device |
| CN114687890B (en) * | 2022-04-26 | 2023-10-27 | 常州大学 | High-efficient laser ignition solid fuel burner |
| CN114705803A (en) * | 2022-05-13 | 2022-07-05 | 常州大学 | Experimental device capable of safely and continuously igniting and burning |
| CN114705803B (en) * | 2022-05-13 | 2023-08-22 | 常州大学 | Experimental device capable of safely and continuously igniting and burning |
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