67 results about "Laser ignition" patented technology

The pulverized coal rotational flow stable combustion burner comprises a shell, a primary air pipe, a first swirler, a backflow cap and a laser generator assembly, a secondary air duct is defined between the primary air pipe and an air guide section, the first swirler is arranged in the secondary air duct, the backflow cap is arranged in the secondary air duct, and the laser generator assembly is arranged in the secondary air duct. The backflow cap is arranged in the combustion chamber and located at the outlet end of the primary air pipe. The laser generator assembly is used for emitting sheet-shaped laser beams into the combustion chamber so as to ignite pulverized coal in the combustion chamber. According to the invention, the size and the shape of the laser beam spot are adjusted, and the ignition efficiency and the stability in the pulverized coal combustion process are obviously improved by the aid of a cooling and combustion control strategy in which tertiary air and secondary air are matched; meanwhile, the laser power and mode can be flexibly switched, different coal quality and load working conditions can be adapted, the adaptability and combustion efficiency of the combustor are greatly improved, the service life of a hearth and related parts is prolonged, and the operation cost is reduced.

The present invention discloses a laser ignition device and a laser ignition control method. The laser ignition device includes: a control host; a laser emitting device electrically connected to the control host and, under control of the control host, emitting a laser toward a target to ignite the target; and a flame identification device electrically connected to the control host and configured to detect a flame and output a corresponding flame detection signal to the control host. The control host is configured to control the laser emitting device to emit or stop emitting the laser based on the flame detection signal. The present invention can solve the problem of high energy consumption in existing laser igniters.

The invention relates to a photothermal conversion material and application thereof, and belongs to the technical field of laser ignition. The photothermal conversion material comprises a composite material formed by loading gold particles on titanium carbide nanosheets and fluorinated alkyl bonded on the surface of the composite material. Gold particles are loaded on the titanium carbide nanosheets, the photothermal conversion performance of the titanium carbide nanosheets can be enhanced on the physical level, meanwhile, fluorinated alkyl silane is adopted for modifying the composite material, the photothermal conversion material can generate CFx free radicals under laser irradiation, oxygenolysis of the titanium carbide nanosheets is accelerated through a chemical reaction, and the photothermal conversion performance of the titanium carbide nanosheets is improved. A TiO2 hardened layer generated by the titanium carbide nanosheet under laser irradiation is broken through, the titanium carbide nanosheet is completely oxidized, energy release of the titanium carbide nanosheet is improved to the maximum extent, high-temperature pulses are instantly generated, and when the titanium carbide nanosheet is used for laser ignition, combustion of energetic materials can be rapidly triggered under low laser energy irradiation.

The present invention provides a laser ignition device for thermal combustion, comprising: a light generating assembly, a light transmission assembly, an ignition assembly, and a light blocking assembly. The light generating assembly includes a first light source configured to emit a first light beam, the first light beam being a laser. The light transmission assembly is configured to transmit the first light beam to the ignition assembly. The ignition assembly includes a light guiding assembly and an ignition nozzle located at the end of the light guiding assembly. The light guiding assembly is configured to guide the first light beam along a guiding direction and ejected through the ignition nozzle for ignition. The light blocking assembly is located on a side of the ignition nozzle away from the light guiding assembly in the guiding direction and is configured to block the entire first light beam ejected from the ignition nozzle. The laser ignition device utilizes laser-assisted ignition, which not only serves as an ignition device but also assists and stabilizes combustion.

The present invention provides a metal-ligand protected silver nanocluster and its preparation and application in remote laser ignition. The metal-ligand protected silver nanocluster of the present invention is composed of RS ‑ and [(TC4A)6(V9O 16 )] 11‑ binary mixed ligand protected Ag 14 nanoclusters, with the molecular formula {Ag 14 [(TC4A)6(V9O 16 )](RS)3}. The structure and composition of the silver nanoclusters synthesized by the present invention are clear and novel; the preparation steps are simple, the preparation conditions are mild, and the raw materials are easily available, having the potential for industrial production; the obtained silver nanoclusters have excellent photothermal conversion performance, have good photothermal conversion effect and rapid heating rate under the irradiation of 660 nm laser, and have potential application value in the field of laser remote ignition materials.

The invention provides a cigarette lighting device and method for realizing stable laser output, and relates to the technical field of semiconductor laser application, the cigarette lighting device comprises a laser, a lithium battery, a voltage boosting and stabilizing circuit, a constant current driving circuit, a timing control circuit, a first switch and a second switch; the input end of the boost voltage stabilizing circuit is connected with the lithium battery, the output end is connected with the input end of the constant-current driving circuit, and the output end of the constant-current driving circuit is connected with the laser; the output end of the timing control circuit is connected with the grounding end of the constant current driving circuit; the first switch is arranged between an enabling pin of the voltage boosting and stabilizing circuit and a power supply and is used for controlling the voltage boosting and stabilizing circuit to be switched on and switched off; the second switch is connected with the trigger end of the timing control circuit and used for triggering the timing control circuit to output signals. According to the cigarette lighting device and method, tobacco shreds can be lighted within two seconds, the power density is close to 1 W / mm, and the power density is far better than that of a traditional laser lighting scheme.

The utility model belongs to the field of laser devices, and discloses a containing device and laser ignition equipment. The containing device comprises a protection box body, a mounting platform, a laser transmitter and a laser control device. An accommodating cavity is formed in the protection box body; the installation platform is arranged in the containing cavity, a working support and a storage support are arranged on the upper end face of the installation platform, the installation platform and the bottom wall face of the containing cavity are arranged in a spaced mode, and a controller containing section is formed between the installation platform and the bottom wall face of the containing cavity; the laser emitter is selectively mounted on the working bracket or the storage bracket, and the laser emitter is used for emitting laser; and the laser control device is arranged in the controller accommodating section, is electrically connected with the laser transmitter and is used for controlling the laser transmitter to emit laser.

The invention relates to the technical field of gas turbine engines, and discloses a laser ignition device and a combustion chamber with the same. The laser ignition device comprises a laser mounting seat, a laser ignition device, a laser ignition device and a laser ignition device, wherein an igniter mounting hole and a protection assembly mounting hole are formed in the laser mounting seat; a lens body on the igniter assembly extends into the igniter mounting hole; the lens protection assembly comprises a shell and a valve, the shell is fixedly connected with the laser mounting base, an air leakage hole is formed in the shell in a penetrating mode, the valve is rotationally mounted in the shell, an extension part is connected to the valve, a shielding part is mounted at the end, away from the valve, of the extension part, and rotational flow blades are arranged on the valve in the axial direction of the shell. According to the laser ignition device, the lens protection assembly is arranged, the air flow in the combustion chamber is used for driving the valve to rotate, and automatic shielding and exposure of the lens body in the ignition state and the non-ignition state are achieved. The exposure time of the lens body under high-temperature airflow is effectively shortened, the lens body is prevented from being polluted, scraped and corroded, and the service life of the lens body is prolonged.

The utility model belongs to the field of laser devices, and discloses laser ignition equipment. Comprising a protection box body, a mounting platform, a laser transmitter and a laser control device. An accommodating cavity is formed in the protection box body; the installation platform is arranged in the containing cavity, a working support and a storage support are arranged on the upper end face of the installation platform, the installation platform and the bottom wall face of the containing cavity are arranged in a spaced mode, and a controller containing section is formed between the installation platform and the bottom wall face of the containing cavity; the laser emitter is selectively mounted on the working bracket or the storage bracket, and the laser emitter is used for emitting laser; and the laser control device is arranged in the controller accommodating section, is electrically connected with the laser transmitter and is used for controlling the laser transmitter to emit laser.

The present invention relates to a laser ignition system for a large-caliber artillery, which provides a linear laser beam shape, and the ignition system of the present invention evenly combusts a cylindrical large-caliber artillery propellant with a hollow center in an energy-efficient manner using a laser in longitudinal and radial directions.

The application belongs to the technical field of hydrogen storage metal material testing, and provides a hydrogen storage metal dust gas-solid two-phase combustion device, which comprises a testing system, an environment control system, a laser ignition system, a gas conveying system, a reaction product real-time collection system, a waste gas discharge and recovery system and a control console; the testing system is assembled and cooperated with a continuous testing mechanism to realize rapid and continuous testing; the environment control system adopts a temperature and humidity sensor to monitor the temperature and humidity in the testing cavity, adjusts the temperature and humidity of the testing cavity through a water mist pump, and the laser ignition system is used for completing the test ignition action; the gas conveying system supplies gas to the testing system to change the metal powder from a stacked state to a suspended state; the reaction product real-time collection system and the waste gas discharge and recovery system are used for collecting and discharging the reaction product; the hydrogen storage metal dust gas-solid two-phase combustion observation is completed through the cooperation of the systems; through rotating the continuous testing mechanism, the next testing cavity can be quickly rotated to the testing and observing position while emptying the previous testing cavity and restoring the environment parameters in the testing cavity, and the next test is continued, so that the continuity of the testing process is ensured and the testing efficiency is improved.

A laser ignition device includes a housing, a light-transmissive container and a laser-emitting unit. The light-transmissive container is located in the housing. The laser-emitting unit includes multiple lasers, where the multiple lasers are disposed between the housing and the light-transmissive container, and light emission directions of the multiple lasers are towards the light-transmissive container. A to-be-atomized raw material and a heat-absorbing material are disposed in the light-transmissive container, and the multiple lasers are configured to heat and atomize the to-be-atomized raw material; the heat-absorbing material is used for absorbing heat to increase the atomization degree of the to-be-atomized raw material.

The invention relates to a laser igniter for a combustion chamber, wherein the laser igniter has at least one optical component and is designed to focus a laser beam onto a focal point, wherein the at least one optical component is movably arranged in such a way that the focal point of the laser igniter can be changed in order to thereby increase the reliability of an ignition. The invention further relates to the use of the laser igniter for igniting a rocket engine, an internal combustion engine or an aircraft gas turbine; and to a method for operating a laser igniter having at least one optical component and for focusing a laser beam onto a focal point, comprising moving the at least one optical component in order to change the focal point.

This application discloses a tetrazine energetic material and its preparation method and application, which belongs to the field of laser detonation and ignition technology. The energetic material includes MC2H x N 10 O y crystal; M is selected from any one of Mn, Fe, Co, Cu, Zn, Cd, and Ni; when M is selected from any one of Mn, Fe, Co, Cu, Zn, and Cd, x=8, y=7; when M is Ni, x=10, y=8. The tetrazine energetic material, as a laser detonation ignition material, generally requires lower laser detonation ignition energy than previously reported compounds and overcomes the serious ClO4 ‑ Despite the shortcomings of ion contamination and high laser ignition threshold, it has important commercial application value in the field of laser initiation and ignition.

The invention provides method for igniting pressurized fuel, the method comprising placing fuel into a combustion chamber; mixing the fuel with supercritical carbon dioxide and oxidizer to create a mixture; and contacting the fuel-air mixture with a laser, whereby the laser is pointed to a first point within the chamber. Also provided is a laser ignitor for carbon dioxide combustors, the ignitor comprising: an elongated housing capable of varying in length, the housing having a first proximal end and a second distal end; a laser head in close spatial relationship to the proximal end, wherein the laser head generates a first laser beam; a seal at the distal end that is optically transparent to the laser beam and physically opaque to combustion contaminants; an algorithm for directing the first beam to a first point within a combustion chamber for a first period of time; and an algorithm for directing a second laser beam to a second point within the combustion chamber for a second period of time.

A device / system for firing a firearm round by igniting a specialized propellant in a specialized shell / casing / cartridge (hereinafter cartridge) with laser optics. The preferred embodiment and the system disclosed herein is intended for retrofitted use in a bolt action rifle, however, the principle may be applied to embodiments for pistols, shotguns and military munitions with minor changes to the laser's power, the focal lens for the cartridge and the laser ignitable propellant. The munitions cartridge design, its focal lens / window and column of charge constitute a critical element of this laser ignition device.

The utility model relates to the technical field of explosive laser ignition devices, and provides an explosive laser ignition device which comprises a protection seat, a first installation part and a second installation part are arranged at the top and the bottom of the protection seat respectively, the protection seat is further provided with a laser protection channel, and the laser protection channel is located between the first installation part and the second installation part. And the laser ignition piece is arranged on the first mounting part. By means of the technical scheme, the problem that in the prior art, even if the height of the incinerator is used, the situation that the laser ignition device is damaged by substances generated by explosion of explosives possibly cannot be avoided is solved.

This invention provides a cigarette lighting device that achieves stable laser output, relating to the field of semiconductor laser application technology. It includes a laser, a lithium battery, a boost regulator circuit, a constant current drive circuit, a timing control circuit, a first switch, and a second switch. The input terminal of the boost regulator circuit is connected to the lithium battery, and its output terminal is connected to the input terminal of the constant current drive circuit. The output terminal of the constant current drive circuit is connected to the laser. The output terminal of the timing control circuit is connected to the ground terminal of the constant current drive circuit. The first switch is located between the enable pin of the boost regulator circuit and the power supply, used to control the opening and closing of the boost regulator circuit. The second switch is connected to the trigger terminal of the timing control circuit, used to trigger the timing control circuit to output a signal. The cigarette lighting device provided by this invention can ignite tobacco within 2 seconds, with a power density approaching 1W / mm², far exceeding traditional laser ignition solutions.

Laser igniter for a combustion chamber, wherein the laser igniter has at least one optical component and is configured to focus a laser beam onto a focal point, wherein the at least one optical component is arranged to be movable such that the focal point of the laser igniter can be changed in order to increase the reliability of an ignition; use of the laser igniter for the ignition of a rocket engine, an internal combustion engine or an aircraft gas turbine; and method for operating a laser igniter with at least one optical component and for focusing a laser beam onto a focal point, comprising moving the at least one optical component to change the focal point.

The invention provides an aluminum-niobium alloy for high-purity niobium and a preparation method of the aluminum-niobium alloy. The preparation method comprises the following steps: (1) pretreating high-purity niobium oxide, high-purity aluminum particles and a slag former, and mixing to obtain a mixed material; and (2) putting the mixed material obtained in the step (1) into a crucible of a vacuum thermit furnace, carrying out vacuum thermit reaction after vacuumizing treatment, and cooling along with the furnace to obtain the aluminum-niobium alloy for high-purity niobium, the vacuum aluminothermic reaction comprises laser ignition and laser heat treatment which are carried out in sequence. According to the method, the ignition mode of the vacuum thermit reaction is optimized, external impurities introduced in a traditional ignition mode are reduced, external energy can be provided for a reaction system, the slag-liquid separation effect is improved, the high-quality high-grade aluminum-niobium alloy is prepared, and meanwhile a production scheme is provided for a high-quality precursor for high-purity niobium.

The invention discloses a substrate, a laser and a fixedly arranged positioning seat in the field of excitation devices. A connecting plate is arranged on the base plate in a sliding manner and is driven by a telescopic piece; an adjusting plate is arranged on the laser, and the adjusting plate can be rotationally and adjustably arranged on the connecting plate; a safety box is further arranged, the safety box is arranged below the positioning seat, and flowing cooling liquid is arranged in the safety box; wherein the telescopic piece drives the laser device to move, and intermittent firing on the cartridge case in the positioning seat is achieved; the movable laser device is designed, the position of the laser device is switched through the telescopic part, during use, the cartridge case is fixed in the positioning seat, the telescopic part is started to drive the laser device to make contact with the bottom of the cartridge case to conduct firing operation, removal of residual gunpowder in the cartridge case is completed, the bottom of the cartridge case communicates with the safety box in the period, and running water flows into the safety box during actual use; rapid fire extinguishing can be achieved, safety is improved, the propagation speed of explosion noise in the safety box in the process is reduced, and the function of reducing noise is achieved.

This invention relates to an observation device for the evolution of laser ignition reactions in energetic materials. The device comprises an upper metal cylinder, a lower metal cylinder, a first camera, a second camera, a first reflector, a second reflector, a laser igniter, and a hydraulic press. The upper metal cylinder has a first observation window and a first laser illumination window on its surface. The first reflector is located inside the first observation window, and the first camera is located outside the first observation window. A first transparent window is located at the bottom of the upper metal cylinder. The lower metal cylinder is identical to the upper metal cylinder. An experimental sample is placed between the first and second transparent windows. A hydraulic press is located below the lower metal cylinder. The laser igniter ignites the experimental sample outside the first and second laser illumination windows. This invention offers a simple experimental process, can acquire a large amount of ignition process data, and fully utilizes multi-factor coupling analysis to understand the hotspot propagation mechanism.

The invention discloses an integrated laser ignition system and relates to the technical field of laser ignition, the integrated laser ignition system comprises a laser igniter, Z-shaped plates are fixedly connected to the positions, close to the four corners, of the bottom of the laser igniter, first threaded holes are formed in the Z-shaped plates, and a supporting plate is arranged at the bottoms of the four Z-shaped plates jointly; second threaded holes are formed in the positions, close to the four corners, of an inner cavity of the supporting plate correspondingly, bolts are in threaded connection with the interiors of the first threaded holes correspondingly, and through mutual cooperation of a laser igniter, a micro motor, a lens, a first gear and other structures, the micro motor can drive a second bevel gear to rotate; the second bevel gear drives the second gear to rotate through the first bevel gear, the second gear drives the rotating disc to rotate through the first gear, the rotating disc drives the lenses to rotate, the four lenses on the rotating disc are four lenses of different specifications, and light rays transmitted by the laser transmitter through the lenses are different. And meanwhile, the rotating disc and the lens are convenient to disassemble.

The rotor blade titanium fire test device based on the laser ignition method comprises a laser device, a shell and a driving assembly, a cavity for containing a rotor blade is defined by the shell, and a transmission window is formed in the shell and used for receiving laser generated by the laser device so as to ignite the rotor blade; the driving assembly comprises a rotating shaft connected with the rotor blades and a motor driving the rotating shaft and is used for driving the rotor blades to rotate in the cavity. The invention further provides a rotor blade titanium fire test method. The device can truly simulate splashing of titanium fire high-temperature particles.

The invention belongs to the field of laser ignition and propulsion, and particularly relates to an ultrafast-response green pollution-free light-operated solid propellant and a preparation method thereof. Comprising the following components in percentage by mass: 10-15% of pentaamino tetrazole serving as a gas generating agent, 75-85% of a mixture of ammonium dinitramide and ammonium nitrate serving as an oxidizing agent, 2-4% of infrared dye serving as a light absorbing agent and 5% of a mixture of glycidyl azide polymer and phenolic resin serving as a binding agent. All the raw material components are fully mixed and then pressed through an oil press, and the propellant grain required by an experiment is prepared. The light-operated solid propellant prepared by the invention successfully realizes accurate light control, the ignition delay time is 5-55ms, and the flameout delay time is 5-13ms. Green and environment-friendly agents ADN and AN are selected as oxidants, compared with traditional toxic and harmful oxidants, the propellant does not generate a large number of solid particles and high-temperature gas, pollution to the environment and harm to human health are greatly reduced in the using process, and therefore the propellant has good application prospects.

A laser cigarette lighting device and a preparation method therefor. The laser cigarette lighting device comprises: a housing (10); a light-transmitting container (20), which is located inside the hou

The invention discloses a triazene bridged azole-based crystal as well as a preparation method and application thereof in energetic materials, and belongs to the field of energetic materials. The chemical formula of the crystal is Co < 2 > C < 8 > H < 16 > N < 28 > O < 2 > or Co < 2 > C < 10 > H < 20 > N < 28 > O < 2 >. The crystal has good stability and safety. After the material is physically mixed with commercial primary explosive lead azide, the laser initiation threshold value is reduced by 1500 times compared with that of single lead azide, and RDX can be successfully detonated; compared with a standard commercial laser ignition agent B / KNOs, the laser initiation threshold value is reduced by 250 times, and meanwhile the defects that the laser ignition agent B / KNOs is only a combustion reaction and the explosion performance is reduced are overcome. The method has great application value in the field of high-performance laser response energetic materials.

The invention relates to the technical field of industrial waste gas treatment safety equipment, discloses a laser direct ignition device for a release torch and a control method of the laser direct ignition device, and aims to solve the problems of low ignition reliability, dependence on auxiliary fuel and high maintenance cost in the prior art. High-temperature plasma fire cores are directly generated in flare gas flow through high-energy pulse laser, reliable ignition of main flare gas is achieved, and guiding flames and a fuel supply system matched with the guiding flames are thoroughly omitted; comprising a laser generator, a light beam transmission and focusing system, a lens protection and cooling system, a state monitoring unit and an intelligent control system, the laser generator is connected with the intelligent control system through a cable and provides an ignition energy source for the torch head. The light beam transmitting and focusing system is connected with the laser generator, ignition laser generated by the laser generator acts on a torch head to conduct torch gas laser ignition, and the lens protecting and cooling system is used for guaranteeing long-time stable operation of the laser generator and the light beam transmitting and focusing system.

The invention belongs to the technical field of hydrogen storage metal material testing, and provides a hydrogen storage metal dust gas-solid two-phase combustion device which comprises a testing system, an environment control system, a laser ignition system, a gas transmission system, a reaction product real-time collection system, an exhaust emission and recovery system and a regulation and control table. According to the testing system, a plurality of testing cavities and a continuous testing mechanism are assembled and matched to realize rapid and continuous testing; the environment control system adopts a temperature and humidity sensor to monitor the temperature and humidity in the test cavity, the temperature and humidity of the test cavity are adjusted through a water mist pump, and the laser ignition system is used for completing the test ignition action; the gas transmission system supplies gas to the test system to change the metal powder from a stacked state to a suspended state; the reaction product real-time collection system and the waste gas emission and recovery system are used for collecting and discharging reaction products; gas-solid two-phase combustion observation of hydrogen storage metal dust is completed through cooperation of all the systems, the other test cavity can be rapidly rotated to a test observation position while the previous test cavity is emptied and environmental parameters in the test cavity are recovered by rotating the continuous test mechanism, the next test is continued, and the test efficiency is greatly improved. Therefore, the continuity of the test process is ensured, and the test efficiency is improved.

The invention provides a system for automatically detecting combustion characteristics of solid fuel in a high-pressure environment. Comprising a combustion chamber, an automatic feeding device, an optical processing device, an ignition device, a pressure measuring device and a control device. The automatic feeding device is located at the bottom of the combustion chamber, and the optical measurement system composed of the high-speed camera and the spectrograph is arranged outside an observation window of the high-pressure cavity and monitors the combustion process in real time through the observation window. During operation, fuel to be detected only needs to be put into the charging hole of the rotary table of the automatic feeding device, the system can automatically supply gas into the combustion chamber, and accurate control over target pressure and atmosphere is achieved by adjusting the electromagnetic valve. And then, the laser ignition device ignites the fuel, and the optical measurement device synchronously collects combustion data. After one-time combustion diagnosis is completed, the automatic feeding device can send new fuel to an ignition position, and the system automatically enters the next-time combustion diagnosis process. The method has the advantages of being high in detection precision, easy and convenient to operate, high in universality and the like, meanwhile, machining obstacles are small, and the engineering application prospect is wide.