CN115425510A - Pyrotechnical laser ignited by compressed air - Google Patents
Pyrotechnical laser ignited by compressed air Download PDFInfo
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- CN115425510A CN115425510A CN202211382275.7A CN202211382275A CN115425510A CN 115425510 A CN115425510 A CN 115425510A CN 202211382275 A CN202211382275 A CN 202211382275A CN 115425510 A CN115425510 A CN 115425510A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/0915—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light
- H01S3/092—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light of flash lamp
- H01S3/093—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light of flash lamp focusing or directing the excitation energy into the active medium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q13/00—Igniters not otherwise provided for
- F23Q13/02—Igniters not otherwise provided for using gas burners, e.g. gas pokers
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Abstract
The invention provides a compressed air ignition firework laser, which belongs to the field of firework lasers and comprises a light-gathering cavity, wherein a quartz protection tube is assembled inside the light-gathering cavity, a gain medium is assembled inside the quartz protection tube, a radiation hole positioned on the front side of the gain medium is arranged outside the light-gathering cavity, a combustion chamber is also arranged inside the light-gathering cavity, pyrotechnic compositions are filled inside the light-gathering cavity, an air compression mechanism communicated with the combustion chamber is arranged on one side of the light-gathering cavity, the gain medium is an Nd: YAG laser rod, the doping concentration of the Nd: YAG laser rod is 1.1%, and the composition ratio of the pyrotechnic compositions is Zr: KClO 4 =57, air compression mechanism is including the cylinder, and the one end of cylinder is provided with the gas port that is linked together with the combustion chamber, and the inside of cylinder is equipped with the piston, and it can realize, when getting rid of external energy constraint, has promoted energy conversion efficiency, has and need not external power supply, and the response speed is fast, and combustion efficiency is high, advantages such as luminous efficacy height.
Description
Technical Field
The present disclosure relates to pyrotechnic lasers, and more particularly to pyrotechnic lasers for compressed air ignition.
Background
The solid laser is most researched and mature in technology, mainly comprises a laser gain medium, a pumping source and a resonant cavity, and has the principle that under the action of strong light radiation of the pumping source, particles in the laser gain medium transition from a lower energy level to an upper energy level to form population inversion, transition back to the lower energy level within a short time to generate light with a certain wavelength, and the light oscillates and strengthens in the resonant cavity back and forth to finally generate laser output;
the pumping source of the mainstream solid laser is generally a laser diode, a Xe lamp, an LED and the like, is supplied with energy by electricity, has a complex structure depending on external energy sources, has poor stability, large volume and weight and poor portability, and compared with the mainstream pumping source, the firework pumping source has the advantages of high energy density (about 4 kilojoules/gram), self-sufficient energy, small environmental dependence, low cost, light weight, convenient carrying, flexible structure and simple and convenient processing and assembly;
the firework laser device is a laser device which utilizes flash light generated when certain pyrotechnic compositions are burnt as a pumping source to generate laser, an electric ignition body is placed in the pyrotechnic compositions, then the electric ignition body is started, and the pyrotechnic compositions connected with the ignition body are ignited in an electric ignition mode;
the current heating resistance wire is used for ignition, an external power supply is needed, the current heating resistance wire is easily bound by an external energy source, part of pyrotechnic composition contacting with the resistance wire is combusted firstly, and the residual pyrotechnic composition is ignited by heat transfer, so that the combustion efficiency is low, and the response speed is low. The pyrotechnic composition is fixed on the resistance wire in a solid state, the burning light of the pyrotechnic composition on the inner layer can be shielded and absorbed by the pyrotechnic composition on the outer layer, the luminous efficiency is low, and the energy conversion efficiency is low.
Disclosure of Invention
One technical problem to be solved by the present disclosure is: the traditional electric ignition firework laser uses a current heating resistance wire for ignition, needs an external power supply, is easily bound by an external energy source, burns part of firework powder contacted with the resistance wire firstly, ignites the rest of firework powder by heat transfer, and has low combustion efficiency and slow response speed. The pyrotechnic composition is fixed on the resistance wire in a solid state, the burning light of the pyrotechnic composition on the inner layer can be shielded and absorbed by the pyrotechnic composition on the outer layer, the luminous efficiency is low, and the energy conversion efficiency is low.
For solving above-mentioned technical problem, this disclosed embodiment provides compressed air ignition's firework laser instrument, including the spotlight chamber, the inside assembly in spotlight chamber has the gain medium, and the perforation is placed to the outside of spotlight chamber is established, and the inside in spotlight chamber still is provided with the combustion chamber, and its inside is filled with the pyrotechnic composition, and one side in spotlight chamber is provided with the air compression mechanism who is linked together with the combustion chamber.
In some embodiments, the air compression mechanism comprises a cylinder, an air port communicated with the combustion chamber is arranged at one end of the cylinder, a piston is assembled in the cylinder, a pull rod extending to the outside of the cylinder is fixedly connected to one end, far away from the air port, of the piston, and a large spring sleeved on the outside of the pull rod is arranged between the piston and the inner wall of one side of the cylinder.
In some embodiments, the outer side of the cylinder is rotatably connected with a large gear, a push rod is installed at the edge position of the upper portion of the large gear, a meshed rack is further connected to the outer side of the cylinder in a sliding mode, one end, located outside the cylinder, of the meshed rack and the pull rod is connected through a connecting piece, the large gear and the meshed rack are connected through a differential assembly, the differential assembly comprises a middle gear and a small gear, the middle gear is rotatably connected to the cylinder, the meshed rack and the middle gear are connected in a meshed mode, the small gear is fixedly connected to the upper side of the middle gear, and the large gear is connected with the small gear in a meshed mode.
In some embodiments, the light-gathering cavity is further fixedly connected with a protective shell positioned on the outer sides of the cylinder, the rodent bar, the middle gear, the pinion and the large gear, a clearance groove arranged in an arc shape is formed in the protective shell, and one end, far away from the large gear, of the push rod extends to the outer side of the protective shell through the clearance groove.
In some embodiments, two ends of the combustion chamber are fixedly connected with two blowing heads respectively, the two blowing heads are respectively a first blowing part and a second blowing part, the first blowing part is connected with the air port of the cylinder, the second blowing part is connected with the air port of the cylinder through a communicating pipe, and a plurality of vent holes which are spirally arranged are formed in the first blowing part and the second blowing part.
In some embodiments, the upper side of the protective housing is further fixedly connected with a locking assembly matched with the push rod, the locking assembly comprises a vertical frame which is fixedly connected to the upper side of the protective housing and vertically arranged, the upper part of the vertical frame is rotatably connected with a rotating rocker, one end of the rotating rocker is fixedly connected with a spoon-shaped locking piece which is positioned on the upper side of the locking end of the clearance groove, and the spoon-shaped locking piece is provided with a round hole-shaped locking hole;
one end of the rotating rocker far away from the spoon-shaped locking piece is fixedly connected with a pressing plate, and a small spring is arranged between the pressing plate and the protective shell.
Through the technical scheme, the smoke and fire pump laser ignited by compressed air is designed according to the first law of thermodynamics and the characteristics of the adiabatic process, the constraint of external energy sources is eliminated, and meanwhile, the energy conversion efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic side view of the FIG. 1 embodiment of the present invention;
FIG. 3 is a schematic view of a partial structure of the present invention;
FIG. 4 is a schematic view of the present invention in partial cutaway configuration;
FIG. 5 is a side view in partial cross-section of the present invention;
FIG. 6 is a schematic view of a partially cut-away configuration of the air compression mechanism of the present invention;
fig. 7 is an enlarged view of the invention at a in fig. 1.
Description of the reference numerals:
1. a light-gathering cavity; 2. a quartz protection tube; 3. a gain medium; 4. releasing the holes; 5. a combustion chamber; 6. a cylinder; 7. a piston; 8. a pull rod; 9. a large spring; 10. a connecting member; 11. meshing the rack; 12. a middle gear; 13. a pinion gear; 14. a bull gear; 15. a push rod; 16. a first blowing section; 17. a second air blowing section; 18. a vent hole; 19. a communicating pipe; 20. a protective housing; 21. a clearance groove; 22. erecting a frame; 23. rotating the rocker; 24. a pressing plate; 25. a spoon-shaped locking member; 26. a small spring.
Detailed Description
Embodiments of the present disclosure are described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the disclosure, but are not intended to limit the scope of the disclosure, which may be embodied in many different forms and are not limited to the specific embodiments disclosed herein, but include all technical solutions falling within the scope of the claims.
These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of the components and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not restrictive, unless specifically stated otherwise.
It is noted that in the description of the present disclosure, unless otherwise indicated, "plurality" means greater than or equal to two; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicate an orientation or positional relationship merely to facilitate the description of the disclosure and to simplify the description, and do not indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operated in a particular orientation, and therefore should not be construed as limiting the disclosure. When the absolute position of the object being described changes, then the relative positional relationship may also change accordingly.
Moreover, the use of "first," "second," and similar terms in this disclosure are not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. "vertical" is not strictly vertical, but is within the tolerance of the error. "parallel" is not strictly parallel but within the tolerance of the error. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered.
It should also be noted that, in the description of the present disclosure, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood as appropriate to one of ordinary skill in the art. When a particular device is described as being between a first device and a second device, intervening devices may or may not be present between the particular device and the first device or the second device.
All terms used in the present disclosure have the same meaning as understood by one of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
Example (b):
referring to fig. 1-7, the pyrotechnical laser for compressed air ignition comprises a light-gathering cavity 1, wherein the light-gathering cavity 1 is approximately of an elliptic cylinder hollow structure and can be of other similar structures, the material is preferably polytetrafluoroethylene, a quartz protection tube 2 which is horizontally arranged is arranged in the light-gathering cavity 1, the quartz protection tube is made of quartz because the quartz tube can resist high temperature of about 1250 ℃, and can be made into a required shape because the quartz tube becomes soft and sticky at the temperature of over 1800 ℃, and on the other hand, because the quartz tube is made of special-grade crystal stone, the purity is high, harmful impurities are few, the quality can be guaranteed for diffusion, alloy preparation and the like, and therefore, a quartz tube is often adopted for closed tube diffusion.
The gain medium 3 is assembled inside the quartz protection tube 2, and the gain medium 3 can be fixed through the quartz protection tube 2 by installing the gain medium 3 inside the quartz protection tube 2;
the gain medium 3 is preferably an Nd, YAG laser rod, can also be ruby, carbon dioxide and the like, can realize the population inversion and amplify light, and determines the material of the output laser wavelength, wherein, the doping concentration of the Nd, YAG laser rod is 1.1%, the diameter is 8mm, the length is 100mm, the outer side of the light-gathering cavity 1 is provided with a radiation hole 4 positioned at the front side of the gain medium 3, when the gain medium 3 generates laser, the laser can be emitted through the radiation hole 4;
referring specifically to the following table, the compressed air ignition glow was explored and compared to the case of the highest energy conversion reported in the open:
| |
|
Test 3 | Comparative example 1 | Comparative example 2 | |
| Dosage (g) | 0.01 | 0.05 | 0.2 | 0.85 | 0.1 |
| Laser energy (mJ) | 93 | 530 | 2480 | 5500 | 702 |
| Output laser energy per unit mass (J/g) | 9.3 | 10.6 | 12.4 | 6.5 | 7.0 |
Note: based on safety considerations, no large dose test was performed
The light-gathering cavity 1 is also internally provided with a combustion chamber 5, the combustion chamber 5 is made of transparent quartz stone, pyrotechnic composition is filled in the combustion chamber 5, and when the pyrotechnic composition is ignited, pumping light is emitted to excite the Nd: YAG gain medium 3 to generate laser.
Referring to fig. 2-6, in order to better ignite the pyrotechnic composition, an air compression mechanism is disposed on one side of the light-focusing chamber 1 and communicated with the combustion chamber 5, at this time, the pyrotechnic composition inside the combustion chamber 5 is ignited by compressed air, compressed air is used for ignition, the whole compressed air inside the combustion chamber 5 is heated up instantaneously, almost all the pyrotechnic composition is ignited at the same time, the instantaneous combustion efficiency is high, at the same time, turbulence is generated in the combustion chamber 5 during the compression process, the pyrotechnic composition is driven by the turbulence to suspend in the combustion chamber 5 in a dispersed manner, the combustion light is shielded and absorbed little, and the light-emitting efficiency is high, so that the energy conversion efficiency of the pyrotechnic laser for compressed air ignition is high, and the energy conversion efficiency of the pyrotechnic laser for compressed air ignition is higher compared with that of the pyrotechnic composition for electric heating ignition, in this process, the turbulence drives the pyrotechnic composition to suspend in a dispersed manner, and ignites the pyrotechnic composition at all the positions simultaneously by the compressed and heated air, so that all the pyrotechnic composition inside the combustion chamber 5 can be completely combusted in a shorter time, the combustion efficiency and the light-emitting efficiency are improved, and the energy conversion efficiency is higher.
According to the first law of thermodynamics and the characteristics of the adiabatic process (dQ = 0), it can be shown that in the course of adiabatic equilibrium, TV γ-1 Constant, PVW γ = constant;
the method comprises the following steps: t is a unit of 2 =T 1 （V 1 /V 2 ） Y-1
P 2 =P 1 （V 1 /V 2 ） Y
Wherein, Y: adiabatic index air Y =1.41；
When the air temperature T 1 =298k =25 ℃, compression ratio: 5,T 2 =576K=303℃
Compared with electric ignition, the electric spark plug has the following advantages:
compression ignition is completed instantly, and response speed is high;
the temperature distribution is uniform, the contact surface with the medicament is large, and all medicaments are almost ignited at the same time;
thirdly, the combustion efficiency is further improved in a closed, high-temperature and high-pressure combustion environment;
an external power supply is not needed, and energy constraint is eliminated;
and fifthly, the dispersed and suspended medicament has high luminous efficiency.
Specifically, please refer to fig. 5-6, which will be described in detail herein for a specific structure of an air compression mechanism, the air compression mechanism includes a cylinder 6, one end of the cylinder 6 is provided with an air port communicated with the combustion chamber 5, and the cylinder 6 is preferably located outside the light-gathering cavity 1, a piston 7 is assembled inside the cylinder 6, one end of the piston 7 away from the air port is fixedly connected with a pull rod 8 extending to the outside of the cylinder 6, a large spring 9 is sleeved outside the pull rod 8 and inside the cylinder 6, one end of the large spring 9 abuts against the piston 7, a large spring 9 sleeved outside the pull rod 8 is disposed between the piston 7 and the inner wall of one side of the cylinder 6, at this time, when ignition of the pyrotechnic composition is required, the pull rod 8 is pulled, the pull rod 8 drives the piston 7 to move in a direction away from the combustion chamber 5, when the piston 7 moves, the large spring 9 is squeezed to deform the combustion chamber, energy is stored, when the limit of the pull rod 8 is contacted, the large spring 9 instantly releases kinetic energy, the piston 7 moves in a direction close to instantly, the gas is blown into the combustion chamber 5, the combustion chamber, and the combustion air is heated to generate a turbulent flow, thereby increasing the combustion temperature of the combustion chamber 5.
After multiple experiments, when the firework pump laser ignited by compressed air works, the piston 7 is pushed by the large spring 9 to rapidly compress the air in the cylinder 6 and the combustion chamber 5, and when the compression ratio is greater than 4 and the compression time is less than 50ms, the compressed air in the combustion chamber can rise temperature to ignite pyrotechnic compositions and emit pump light to excite Nd, YAG gain medium to generate laser;
wherein the preferred component ratio of the pyrotechnic composition is Zr to KClO 4 =57, its ignition is about 400 ℃, and the pyrotechnic composition of this ratio combustion effect is better, and ignition efficiency is faster.
Referring to fig. 3-4 and fig. 6, in order to better drive the drawing rod 8 to move, the outer side of the cylinder 6 is rotatably connected with a large gear 14, a push rod 15 is installed at the edge position of the upper portion of the large gear 14, the large gear 14 can be rotated by pushing the push rod 15, the outer side of the cylinder 6 is also slidably connected with a rack engaging bar 11, the rack engaging bar 11 and the end of the drawing rod 8, which is located outside the cylinder 6, are connected through a connecting piece 10, when the rack engaging bar 11 moves, the drawing rod 8 can be driven to move through the connecting piece 10, meanwhile, the large gear 14 and the rack engaging bar 11 are connected through a differential assembly, so that the rack engaging bar 11 can be driven to move to a larger extent by rotating the large gear 14 to a smaller extent, thereby reducing the action amplitude of the user when the user is ignited.
Specifically, the differential assembly comprises a middle gear 12 and a pinion 13, wherein the middle gear 12 is rotatably connected to the cylinder 6, a meshing rack 11 is meshed with the middle gear 12, the pinion 13 is fixedly connected to the upper side of the middle gear 12, a large gear 14 is meshed with the pinion 13, the small gear 13 is driven to rotate together when the large gear 14 rotates, the small gear 13 drives the middle gear 12 to rotate together when the small gear 13 rotates, the middle gear 12 drives the meshing rack 11 to linearly move, and the drawing rod 8 is adjusted;
meanwhile, referring to fig. 5, in order to avoid collision among the pinion 13, the bull 14 and the rack 11, the pinion 13 and the bull 14 are located on the upper side of the rack 11, so that direct contact among the pinion 13, the bull 14 and the rack 11 is reduced.
Referring to fig. 1-4, in order to enclose the middle gear 12, the pinion gear 13, and the bull gear 14, isolate the direct contact between the user and the rodent, and avoid the pinching of the rodent on the user, the light-gathering chamber 1 is further fixedly connected with a protective housing 20 located outside the cylinder 6, the rodent bar 11, the middle gear 12, the pinion gear 13, and the bull gear 14, the protective housing 20 is provided with an arc-shaped clearance groove 21, one end of the push rod 15 away from the bull gear 14 extends to the outside of the protective housing 20 through the clearance groove 21, at this time, the direct contact between the middle gear 12, the pinion gear 13, the bull gear 14, and the user can be isolated through the protective housing 20, the pinching of the rodent on the user is avoided, and the aesthetic property of the protective housing can be improved.
Further, as shown in fig. 1-4, in order to enable the interior of the combustion chamber 5 to form the opposite air flow and to better blow the pyrotechnic composition inside the combustion chamber 5, two ends of the combustion chamber 5 are respectively and fixedly connected with two blowheads (here, the number of blowheads may be plural and are uniformly arranged on the periphery of the combustion chamber 5), the two blowheads are respectively a first blowhead 16 and a second blowhead 17, the first blowhead 16 is connected with the air port of the cylinder 6, the second blowhead 17 is connected with the air port of the cylinder 6 through a communicating pipe 19, the communicating pipe 19 penetrates through the protective housing 20, at this time, the air inside the cylinder 6 simultaneously blows towards the interior of the combustion chamber 5 through the two blowheads, the air entering the interior of the combustion chamber 5 can form the opposite air flow, and blow the pyrotechnic composition inside the combustion chamber 5, so that the pyrotechnic composition scattering effect is better.
Specifically, a plurality of irregularly arranged vent holes 18 are formed in the first blowing part 16 and the second blowing part 17, and when gas flows into the combustion chamber 5 through the vent holes 18, turbulent airflow, i.e. turbulent flow, is formed;
meanwhile, in order to further enhance the blowing effect of the airflow on the pyrotechnic composition inside the combustion chamber 5, the ventilation holes 18 are preferably spiral wind holes, and in this case, a plurality of airflows discharged through the ventilation holes 18 can form a spiral airflow, and the pyrotechnic composition can be blown better by the spiral airflow.
Referring to fig. 1-2 and 7, in some use cases, the push rod 15 cannot be reset and released in time after being pushed and started, and the push rod 15 needs to be positioned for a period of time, so that a user does not need to continuously and manually push the push rod 15, and a locking assembly matched with the push rod 15 is fixedly connected to the upper side of the protective housing 20;
the initial position of the push rod 15 in the clearance groove 21 is the starting end of the clearance groove 21, the push rod 15 is pushed and then positioned at the locking end in the clearance groove 21, and when the push rod 15 is positioned at the locking end of the clearance groove 21, the push rod 15 can be locked through the locking assembly;
specifically, the locking assembly comprises a vertical frame 22 which is fixedly connected to the upper side of the protective shell 20 and vertically arranged, the upper part of the vertical frame 22 is rotatably connected with a rotating warped plate 23, one end of the rotating warped plate 23 is fixedly connected with a spoon-shaped locking piece 25 positioned on the upper side of the locking end of the clearance groove 21, a circular-hole-shaped locking hole is formed in the spoon-shaped locking piece 25, and when the push rod 15 is positioned at the locking end of the clearance groove 21, the push rod 15 can be installed in the locking hole of the spoon-shaped locking piece 25, so that the push rod 15 can be positioned;
moreover, one end of the rotating rocker 23, which is far away from the spoon-shaped locking element 25, is fixedly connected with a pressing plate 24, the spoon-shaped locking element 25 can be driven to move towards the direction far away from the protective shell 20 by pressing the pressing plate 24, so that the push rod 15 is separated from the spoon-shaped locking element 25, and the push rod 15 can be automatically reset under the elastic action of the large spring 9;
meanwhile, in order to enable the pivoting lever 23 to automatically have a larger angle, an end of the pressing plate 24, which is away from the pivoting lever 23, is inclined in a direction away from the protective housing 20, so that a distance between the pressing plate 24 and the protective housing 20 is increased, and thus, a larger movement space is provided.
And, in order to prevent the drop-off phenomenon that appears between push rod 15 and the spoon-shaped locking piece 25, be provided with little spring 26 between pressing board 24 and the protecting sheathing 20, can extrude little spring 26 when pressing board 24 is pressed downwards, let it carry out the deformation energy storage, after pressing board 24 was loosened, little spring 26 can push pressing board 24 and reset, make pressing board 24 drive spoon-shaped locking piece 25 and continue to move downwards.
When the push rod 15 rotates to the contact of the locking end of the clearance groove 21 and the pressing plate 24, in order to be able to automatically jack up the spoon-shaped locking element 25 towards the upper side and move the spoon-shaped locking element 25 to the upper side of the push rod 15 without manual operation of a user, the spoon-shaped locking element 25 is preferably of a hemispherical structure, the transverse cross-sectional dimension of the spoon-shaped locking element is gradually reduced from top to bottom, a locking hole is formed in the middle position of the spoon-shaped locking element 25, at this time, when the push rod 15 contacts, the horizontal thrust can be converted into a longitudinal thrust through the shape of the spoon-shaped locking element 25, the spoon-shaped locking element 25 is driven to move towards the upper side, and thus, the automatic locking of the spoon-shaped locking element 25 to the push rod 15 is realized.
When in use: a user holds the protective shell 20 with a hand, pushes the push rod 15, enables the push rod 15 to move along the direction of the clearance groove 21, when the push rod 15 moves, the large gear 14 can be driven to rotate, when the large gear 14 rotates, kinetic energy can be transmitted to the rodent 11 through the small gear 13 and the medium gear 12, the rodent 11 can linearly move, when the rodent 11 moves, the pull rod 8 and the piston 7 can be driven to move towards the direction away from the combustion chamber 5, when the piston 7 moves, the large spring 9 can be extruded, extruded and deformed, energy storage can be carried out, until the push rod 15 contacts with the spoon-shaped locking piece 25, the spoon-shaped locking piece 25 is pushed upwards through the push rod 15, at the moment, the spoon-shaped locking piece 25 can extrude the small spring 26 through the rotating warped plate 23 and the pressing plate 24, the deformation energy storage can be carried out, when the push rod 15 overlaps with the locking hole of the spoon-shaped locking piece 25, the spoon-shaped locking piece 25 can move downwards under the elastic force of the small spring 26, and the push rod 15 can be inserted into the locking hole for locking;
then, the pressing plate 24 is pressed, the pressing plate 24 drives the spoon-shaped locking piece 25 to move upwards through rotating the rocker 23 until the spoon-shaped locking piece 25 is separated from the push rod 15, the limitation of the spoon-shaped locking piece 25 on the push rod 15 can be cancelled, after the limitation of the push rod 15 is cancelled, the large spring 9 can instantly release kinetic energy to drive the piston 7 to instantly move towards the direction close to an air port, gas is blown into the combustion chamber 5, turbulence is generated in the combustion chamber 5, air in the combustion chamber 5 is instantly compressed and heated, the temperature of the air is increased, all pyrotechnic compositions are ignited almost simultaneously, instant combustion efficiency is high, turbulence is generated in the combustion chamber 5 during the compression process, turbulence drives the pyrotechnic compositions to be dispersedly suspended in the combustion chamber 5, combustion light is shielded and absorbed little, and the luminous efficiency is high, therefore, the energy conversion efficiency of the pyrotechnic laser ignited by compressed air is high, the pyrotechnic laser ignited is higher than that of an electrically-ignited pyrotechnic laser, in the process, the pyrotechnic laser is driven by turbulence to dispersedly suspend the pyrotechnic compositions, and simultaneously ignites the energy of the pyrotechnic laser at all positions, and the combustion efficiency of the pyrotechnic laser is higher than that of an electrically-ignited pyrotechnic laser, and the combustion chamber 5 is higher than that of a combustion efficiency is higher;
in conclusion, according to the first law of thermodynamics and the characteristics of the adiabatic process, the smoke-fire pump laser ignited by compressed air is designed, the constraint of external energy sources is eliminated, and meanwhile, the energy conversion efficiency is improved.
Thus far, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. Those skilled in the art can now fully appreciate how to implement the teachings disclosed herein, in view of the foregoing description.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict.
Claims (9)
1. Compressed air fired pyrotechnic laser characterized by comprising: the light gathering cavity comprises a light gathering cavity (1), wherein a quartz protection tube (2) is assembled inside the light gathering cavity (1), a gain medium (3) is assembled inside the quartz protection tube (2), a light releasing hole (4) located on the front side of the gain medium (3) is formed in the outer side of the light gathering cavity (1), a combustion chamber (5) is further arranged inside the light gathering cavity (1), pyrotechnic compositions are filled in the combustion chamber (5), and an air compression mechanism communicated with the combustion chamber (5) is arranged on one side of the light gathering cavity (1).
2. A compressed air-ignited pyrotechnic laser according to claim 1, characterized in that the gain medium (3) is a Nd: YAG laser rod with a doping concentration of 1.1%.
3. The compressed air-ignited pyrotechnical laser as claimed in claim 1, wherein said pyrotechnic charge comprises Zr to KClO 4 =57:43。
4. The compressed air ignited pyrotechnical laser according to claim 1, wherein the air compression mechanism comprises a cylinder (6), one end of the cylinder (6) is provided with an air port communicated with the combustion chamber (5), a piston (7) is assembled inside the cylinder (6), one end of the piston (7) far away from the air port is fixedly connected with a pull rod (8) extending to the outside of the cylinder (6), and a large spring (9) sleeved outside the pull rod (8) is arranged between the piston (7) and the inner wall of one side of the cylinder (6).
5. The compressed air-ignited pyrotechnical laser according to claim 4, wherein the outside of the cylinder (6) is rotatably connected with a gearwheel (14), a push rod (15) is mounted at the edge position of the upper part of the gearwheel (14), the outside of the cylinder (6) is further connected with a rack (11) in a sliding manner, the rack (11) and the pull rod (8) are connected with each other through a connecting piece (10) at one end outside the cylinder (6), and the gearwheel (14) and the rack (11) are connected with each other through a differential assembly.
6. A compressed air-ignited pyrotechnic laser as claimed in claim 5 wherein said differential assembly comprises a central gear (12) and a pinion (13), said central gear (12) being rotatably connected to the cylinder (6) and said rack (11) and central gear (12) being in meshing engagement, said pinion (13) being fixedly connected to the upper side of the central gear (12) and said bull gear (14) and pinion (13) being in meshing engagement.
7. The compressed air ignited pyrotechnical laser according to claim 6, wherein the light collecting cavity (1) is further fixedly connected with a protective housing (20) which is positioned outside the cylinder (6), the rodent (11), the middle gear (12), the pinion (13) and the bull gear (14), the protective housing (20) is provided with a clearance groove (21) which is arranged in an arc shape, and one end of the push rod (15) far away from the bull gear (14) extends to the outside of the protective housing (20) through the clearance groove (21).
8. The pyrotechnical laser ignited by compressed air according to claim 7, wherein two blowing heads are fixedly connected to two ends of the combustion chamber (5), the two blowing heads are respectively a first blowing part (16) and a second blowing part (17), the first blowing part (16) is connected with a gas port of the cylinder (6), the second blowing part (17) is connected with a gas port of the cylinder (6) through a communicating pipe (19), a plurality of vent holes (18) which are spirally arranged are formed in the first blowing part (16) and the second blowing part (17), and the communicating pipe (19) penetrates through the protective housing (20).
9. The compressed air ignited pyrotechnical laser according to claim 7, wherein the upper side of the protective housing (20) is further fixedly connected with a locking assembly adapted to the push rod (15), the locking assembly comprises a vertical stand (22) which is fixedly connected to the upper side of the protective housing (20) and vertically arranged, the upper part of the vertical stand (22) is rotatably connected with a rotating rocker (23), one end of the rotating rocker (23) is fixedly connected with a spoon-shaped locking piece (25) which is positioned on the upper side of the locking end of the clearance groove (21), and the spoon-shaped locking piece (25) is provided with a circular hole-shaped locking hole;
one end of the rotary rocker (23) far away from the spoon-shaped locking piece (25) is fixedly connected with a pressing plate (24), and a small spring (26) is arranged between the pressing plate (24) and the protective shell (20).
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