CN105021765B - A kind of resistance flame device during solid propellant laser ignition experiment - Google Patents
A kind of resistance flame device during solid propellant laser ignition experiment Download PDFInfo
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- CN105021765B CN105021765B CN201510466110.1A CN201510466110A CN105021765B CN 105021765 B CN105021765 B CN 105021765B CN 201510466110 A CN201510466110 A CN 201510466110A CN 105021765 B CN105021765 B CN 105021765B
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Abstract
The invention discloses the resistance flame device during experiment of a kind of solid propellant laser ignition, go out light shield including laser lens, reflection cavity housing, the first laser mirror, the second laser mirror, mirror support, resistance flame cylinder and shrinkage type.Resistance flame cylinder includes two different cylinders of diameter, cylindrical member at one end and the first through hole that diameter is little are connected, the cylinder that the other end is big with diameter is connected, and the cylinder other end that diameter is big goes out light shield with shrinkage type and is connected, and the first laser mirror and the second laser mirror all adopt molybdenum reflecting mirror.Present invention additionally comprises two micrometer adjusting screws, two micrometer adjusting screw one end both pass through reflection cavity housing, prop up the free end of laser-bounce mirror support, and the angle of laser mirror is finely tuned.Same combustor both can have been done the laser ignition experiment of the solid propellant of the short length of flame by the present invention, it is also possible to do the Laser Experiments of the solid propellant of the high length of flame.
Description
Technical field
The invention belongs to solid propellant laser ignition field, resistance flame device when testing particularly to a kind of solid propellant laser ignition.
Background technology
nullOwing to laser is as radiation source in research solid propellant ignition combustibility，Because the energy of its output is high，And exposure time and output energy adjustable，Can independent of initial temperature、Pressure and gas group grade ambient parameter select energy density，Decrease the heat loss in experimentation and heterogeneous effect，Favorable repeatability，The advantages such as electromagnetism interference，Become the Novel ignition mode studying solid propellant both at home and abroad，But owing to carbon dioxide laser is black light，In order to when reducing test to light difficulty and limited the height of combustor by lab space and can not be heightened，When laser ignition is tested, the irradiation propellant flame height due to superlaser can be significantly high，When flame height is too high，Laser transmission eyeglass higher for price above flame can be burnt，The device of laser lens is not protected in existing frequently-used burning mostly，Such as Zhu Guoqiang proposes in " SFRJ ignition process research " literary composition，Combustor is positioned at propellant and is in the underface of laser lens，But this combustor cannot do the propellant fire experiment that flame height is higher.Gong Lunkun also refer to the device of a kind of laser ignition experiment in " the radiation igniting of fourth hydroxyl composite propellant " literary composition, and the laser lens of this covering device is also at the surface of propellant, also cannot carry out the propellant laser ignition experiment of the high length of flame.
Summary of the invention
It is an object of the invention to provide the resistance flame device during experiment of a kind of solid propellant laser ignition, solve the Flame of Solid Propellant too high problem burning out laser lens during laser ignition experiment.
The technical solution realizing the object of the invention is: the resistance flame device during experiment of a kind of solid propellant laser ignition, goes out light shield including laser lens, reflection cavity housing, the first laser mirror, the second laser mirror, mirror support, resistance flame cylinder and shrinkage type；Laser lens, first laser mirror, second laser mirror and mirror support are arranged in reflection cavity housing, reflection cavity case top is provided with stepped hole, bottom is provided with the first through hole, first through hole and stepped hole heteropleural, laser lens is fixed in described stepped hole, first laser mirror and the second laser mirror are separately fixed on two mirror supports, mirror support one end is hinged on reflection cavity inner walls, first laser mirror and the second laser mirror is parallel and heteropleural, laser lens is positioned in the input path of the first laser mirror, second laser mirror is positioned on the emitting light path of the first laser mirror, first through hole is positioned on the reflected light path of the second laser mirror；Resistance flame cylinder includes two different cylinders of diameter, and cylindrical member at one end and the first through hole that diameter is little are connected, and the cylinder that the other end is big with diameter is connected, and the cylinder other end that diameter is big goes out light shield with shrinkage type and is connected；The cylinder that diameter is little is provided with the second through hole, two different through holes of diameter it are provided with in the cylinder that diameter is big, wherein third through-hole diameter is less than the diameter of fourth hole, third through-hole and the second through hole communicate and diameter is identical, centered by third through-hole, being provided with a circle groove at the cylinder top that diameter is big, the outer wall of groove is provided with several steam vents.
Described first laser mirror and the second laser mirror all adopt molybdenum reflecting mirror.
Described shrinkage type goes out the outlet diameter diameter less than fourth hole of light shield.
Resistance flame device during the experiment of a kind of solid propellant laser ignition, also includes two micrometer adjusting screws, and two micrometer adjusting screw one end both pass through reflection cavity housing, prop up the free end of laser-bounce mirror support, and the angle of laser mirror is finely tuned.
Compared with prior art, it has the great advantage that (1) same combustor both can do the laser ignition experiment of the solid propellant of the short length of flame to the present invention, it is also possible to do the Laser Experiments of the solid propellant of the high length of flame.
(2) if flame height is too high, when stretching into the reflection cavity housing being positioned at resistance flame cylinder top, the laser lens that cost is high will not be burnt out, save experimental cost.
(3) simple in construction, cheap.
Accompanying drawing explanation
Fig. 1 is the population structure schematic diagram of the resistance flame device during solid propellant laser ignition experiment of the present invention.
Fig. 2 is the schematic three dimensional views of the resistance flame device during solid propellant laser ignition experiment of the present invention.
Fig. 3 is the resistance flame barrel structure schematic diagram of the resistance flame device during solid propellant laser ignition experiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
nullIn conjunction with Fig. 1 ~ Fig. 3，A kind of resistance flame device during solid propellant laser ignition experiment，Including laser lens 2、Reflection cavity housing、First laser mirror 5-1、Second laser mirror 5-2、Mirror support 6、Resistance flame cylinder 9 and shrinkage type go out light shield 10，Laser lens 2、First laser mirror 5-1、Second laser mirror 5-2 and mirror support 6 are arranged in reflection cavity housing，Reflection cavity case top is provided with stepped hole，Bottom is provided with the first through hole，First through hole and stepped hole heteropleural，Laser lens 2 is fixed in described stepped hole，First laser mirror 5-1 and the second laser mirror 5-2 is separately fixed on two mirror supports 6，Mirror support 6 one end is hinged on reflection cavity inner walls，First laser mirror 5-1 and the second laser mirror 5-2 is parallel and heteropleural，Laser lens 2 is positioned in the input path of the first laser mirror 5-1，Second laser mirror 5-2 is positioned on the emitting light path of the first laser mirror 5-1，First through hole is positioned on the reflected light path of the second laser mirror 5-2.Resistance flame cylinder 9 includes two different cylinders of diameter, and cylindrical member at one end and the first through hole that diameter is little are connected, and the cylinder that the other end is big with diameter is connected, and the cylinder other end that diameter is big goes out light shield 10 with shrinkage type and is connected.The cylinder that diameter is little is provided with the second through hole, two different through holes of diameter it are provided with in the cylinder that diameter is big, wherein third through-hole diameter is less than the diameter of fourth hole, third through-hole and the second through hole communicate and diameter is identical, centered by third through-hole, being provided with a circle groove at the cylinder top that diameter is big, the outer wall of groove is provided with several steam vents.
First laser mirror 5-1 and the second laser mirror 5-2 all adopts molybdenum reflecting mirror.
Also including two micrometer adjusting screws 4, two micrometer adjusting screw one end both pass through reflection cavity housing, prop up the free end of laser-bounce mirror support 6, and the angle of laser mirror is finely tuned.
Shrinkage type goes out the outlet diameter diameter less than fourth hole of light shield 10.
Embodiment 1
nullA kind of resistance flame device during solid propellant laser ignition experiment，Including laser lens 2、Reflection cavity housing、First laser mirror 5-1、Second laser mirror 5-2、Resistance flame cylinder 9 and shrinkage type go out light shield 10，First laser mirror 5-1、Second laser mirror 5-2 and mirror support 6 are arranged in reflection cavity housing，Reflection cavity housing is detachable，Reflection cavity case top is provided with stepped hole，Bottom is provided with the first through hole，First through hole and stepped hole heteropleural，Laser lens 2 is fixed in described stepped hole，Fixed by clamp nut，First laser mirror 5-1 and the second laser mirror 5-2 is separately fixed on two mirror supports 6，Mirror support 6 one end is hinged on reflection cavity inner walls by rotating shaft 8，Rotating shaft 8 is provided with torsion spring，First laser mirror 5-1 and the second laser mirror 5-2 is parallel and is positioned at two parallel sidewalls of reflection cavity housing，Laser lens 2 is positioned in the input path of the first laser mirror 5-1，Second laser mirror 5-2 is positioned on the emitting light path of the first laser mirror 5-1，First through hole is positioned on the reflected light path of the second laser mirror 5-2.Resistance flame cylinder 9 includes two different cylinders of diameter, and two cylinders are one-body molded, and cylindrical member at one end and the first through hole that diameter is little are connected by screw thread, and the cylinder that diameter is big is gone out light shield 10 again and is connected by screw thread with shrinkage type.The cylinder that diameter is little is provided with the second through hole, two different through holes of diameter it are provided with in the cylinder that diameter is big, wherein third through-hole diameter is less than the diameter of fourth hole, third through-hole and the second through hole communicate and diameter is identical, centered by third through-hole, being provided with a circle groove at the cylinder top that diameter is big, the outer wall of groove is circumferentially arranged with 4 steam vents.
First laser mirror 5-1 and the second laser mirror 5-2 all adopts molybdenum reflecting mirror.
Also including two micrometer adjusting screws 4, two micrometer adjusting screw 4 one end both pass through reflection cavity housing, and two micrometer adjusting screws 4 are respectively held against the free end of laser-bounce mirror support 6, it is achieved the fine setting to laser-bounce mirror angle.
Shrinkage type goes out the outlet diameter diameter less than fourth hole of light shield 10.
Work process is as follows:
By the most quasi-for the light-emitting window of laser instrument laser lens 2, laser is made to enter reflection cavity housing from laser lens 2, the angle of laser mirror 5 is constantly adjusted by micrometer adjusting screw 4, until laser can go out the underface injection of light shield 10 from shrinkage type, resistance flame device when being tested by solid propellant laser ignition puts into combustor, the position of fine setting combustor and angle, until laser can go out light shield 10 by shrinkage type is irradiated to solid propellant surface.When solid propellant flame in short-term, flame will not contact shrinkage type and go out light shield 10, when the flame height of solid propellant is higher, flame enter in resistance flame cylinder 9 even if can go out the light-emitting window of light shield 10 by shrinkage type, flame from pore to big space time flame can spread, reduce the height of flame, the groove at resistance flame cylinder 9 inwall top, flame there is the effect of gathering, the flame being diffused into this is discharged to resistance flame cylinder 9 outside by hindering the steam vent of flame cylinder 9, after resistance flame cylinder 9, flame height is still significantly high, flame can only enter reflection cavity housing by the second through hole, burn the second laser-bounce eyeglass 5-2, the price of this laser mirror is far below the price of laser lens 2, the cost changing laser mirror 5-2 is lower than the cost of directly replacing laser lens 2.
Same combustor both can have been done the laser ignition experiment of the solid propellant of the short length of flame by the present invention, it is also possible to do the Laser Experiments of the solid propellant of the high length of flame.If flame height is too high, when stretching into the reflection cavity housing being positioned at resistance flame cylinder top, the laser lens that cost is high will not be burnt out, save experimental cost.Simple in construction, cheap.
Claims (4)
1. a resistance flame device during solid propellant laser ignition experiment, it is characterised in that: include laser lens (2), reflection cavity housing, the first laser mirror (5-1), the second laser mirror (5-2), mirror support (6), resistance flame cylinder (9) and shrinkage type and go out light shield (10)；nullLaser lens (2)、First laser mirror (5-1)、Second laser mirror (5-2) and mirror support (6) are arranged in reflection cavity housing，Reflection cavity case top is provided with stepped hole，Bottom is provided with the first through hole，First through hole and stepped hole heteropleural，Laser lens (2) is fixed in described stepped hole，First laser mirror (5-1) and the second laser mirror (5-2) are separately fixed on two mirror supports (6)，Mirror support (6) one end is hinged on reflection cavity inner walls，First laser mirror (5-1) is parallel with the second laser mirror (5-2) and heteropleural，Laser lens (2) is positioned in the input path of the first laser mirror (5-1)，Second laser mirror (5-2) is positioned on the emitting light path of the first laser mirror (5-1)，First through hole is positioned on the reflected light path of the second laser mirror (5-2)；Resistance flame cylinder (9) includes two different cylinders of diameter, and cylindrical member at one end and the first through hole that diameter is little are connected, and the cylinder that the other end is big with diameter is connected, and the cylinder other end that diameter is big goes out light shield (10) with shrinkage type and is connected；The cylinder that diameter is little is provided with the second through hole, two different through holes of diameter it are provided with in the cylinder that diameter is big, wherein third through-hole diameter is less than the diameter of fourth hole, third through-hole and the second through hole communicate and diameter is identical, centered by third through-hole, being provided with a circle groove at the cylinder top that diameter is big, the outer wall of groove is provided with several steam vents.
2. resistance flame device during solid propellant laser ignition according to claim 1 experiment, it is characterised in that: described first laser mirror (5-1) and the second laser mirror (5-2) all adopt molybdenum reflecting mirror.
3. resistance flame device during solid propellant laser ignition according to claim 1 experiment, it is characterised in that: described shrinkage type goes out the outlet diameter diameter less than fourth hole of light shield (10).
4. resistance flame device during solid propellant laser ignition according to claim 1 experiment, it is characterized in that: also include two micrometer adjusting screws (4), two micrometer adjusting screw one end both pass through reflection cavity housing, prop up the free end of laser-bounce mirror support (6), the angle of laser mirror is finely tuned.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510466110.1A CN105021765B (en) | 2015-07-31 | 2015-07-31 | A kind of resistance flame device during solid propellant laser ignition experiment |
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| CN201510466110.1A CN105021765B (en) | 2015-07-31 | 2015-07-31 | A kind of resistance flame device during solid propellant laser ignition experiment |
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| CN105021765A CN105021765A (en) | 2015-11-04 |
| CN105021765B true CN105021765B (en) | 2016-07-06 |
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| CN106764727A (en) * | 2017-01-23 | 2017-05-31 | 中山米戈尔照明有限公司 | A kind of secondary reflection LED down lamp |
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| SU1603175A1 (en) * | 1988-06-02 | 1990-10-30 | Предприятие П/Я Р-6681 | Method of ingniting fuel gas |
| WO2008006638A1 (en) * | 2006-07-10 | 2008-01-17 | Robert Bosch Gmbh | A method for operating an ignition for a combustion engine |
| CN201174495Y (en) * | 2008-04-09 | 2008-12-31 | 北京航空航天大学 | Laser light generating apparatus |
| CN104181160A (en) * | 2014-08-25 | 2014-12-03 | 南京理工大学 | Signal acquisition device based on experiments of laser-induced ignition of solid propellants |
| 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 |
| CN204882484U (en) * | 2015-07-31 | 2015-12-16 | 南京理工大学 | Flame trap when experiment is igniteed to solid propellant laser |
-
2015
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1603175A1 (en) * | 1988-06-02 | 1990-10-30 | Предприятие П/Я Р-6681 | Method of ingniting fuel gas |
| WO2008006638A1 (en) * | 2006-07-10 | 2008-01-17 | Robert Bosch Gmbh | A method for operating an ignition for a combustion engine |
| CN201174495Y (en) * | 2008-04-09 | 2008-12-31 | 北京航空航天大学 | Laser light generating apparatus |
| CN104181160A (en) * | 2014-08-25 | 2014-12-03 | 南京理工大学 | Signal acquisition device based on experiments of laser-induced ignition of solid propellants |
| 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 |
| CN204882484U (en) * | 2015-07-31 | 2015-12-16 | 南京理工大学 | Flame trap when experiment is igniteed to solid propellant laser |
Non-Patent Citations (2)
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| Ignition of Laminated Composite Propellants Composed of Ammonium Perchlorate Single Crystal and Fuel-Binder Slab by Means of C02 Laser;T.SAITO et al.;《Combustion Science and Technology》;19771231;第15卷(第3-4期);第161-168页 * |
| 丁羟复合推进剂的辐射点火;巩伦昆等;《火炸药学报》;20120630;第35卷(第3期);第75-79页 * |
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Granted publication date: 20160706 Termination date: 20180731 |