47 results about "Laser ignition" patented technology

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 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 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.

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.

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.

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.

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.

This invention discloses an ignition system and method based on microwave energy conversion, including a directional microwave generator for generating and directionally emitting microwaves at a preset frequency. The operating frequency range is 2.45 GHz or 915 MHz, which are commonly used in industrial, scientific, and medical applications. Compared with laser ignition, which requires complex optical systems and expensive lasers, the microwave generator (such as a magnetron) and absorbing materials used in this system are mature and relatively low-cost industrial components. The overall system structure is simpler, and the manufacturing and maintenance costs are more advantageous, making it more suitable for large-scale commercial applications.

The present invention discloses a sealed laser ignition tube, comprising: an ignition tube housing, a lens assembly, and an O-ring; the lens assembly is mounted on the ignition tube housing and secured by laser welding; the O-ring is disposed in the gap between the lens assembly and the ignition tube housing; the lens assembly comprises a lens holder, a metallized self-focusing lens, and brazing material; the metallized self-focusing lens is brazed within the lens holder, and the lens holder is secured within the ignition tube housing by laser welding; the metallized self-focusing lens comprises an anti-reflection film, a selective reflection film, a metal film, and a self-focusing lens; the self-focusing lens has an anti-reflection film coated on its upper end surface, a selective reflection film coated on its lower end surface, and a metal film evaporated on its cylindrical end surface. The sealed laser ignition tube of the present invention has a simple structure, good sealing performance, and can maintain the structural integrity of the laser ignition tube before and after ignition.

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.

This disclosure provides a method and system for engine control. These methods and systems are used to dry engine cylinders in situ in response to engine flooding. In one example, a laser ignition device is sequentially operated in each engine cylinder while the cylinder is parked with its intake valve closed and exhaust valve open. Heat generated by the laser operation vaporizes liquid fuel in the cylinder, which then flows out of the cylinder through the open exhaust valve, thereby accelerating cylinder drying.

The rapid combustion device comprises a combustion bomb cover, a combustion bomb body, an air inlet / outlet, a laser ignition unit, a temperature measurement probe and a constant temperature unit, the combustion bomb cover and the combustion bomb body are detachably connected to form a sealed combustion cavity; a crucible support is arranged in the combustion cavity, the laser ignition unit is arranged above the crucible support, the temperature measurement probe is arranged in a temperature measurement heat storage layer of the combustion bomb body, and the temperature measurement heat storage layer absorbs heat generated by combustion of a sample in a crucible and conducts the heat to the temperature measurement probe to measure combustion heat and temperature rise; the air inlet and outlet is used for oxygenating the combustion cavity before a test and exhausting the combustion cavity after the test; a stirring assembly is further arranged in the combustion cavity, and the constant temperature unit is arranged on the outer side face of the combustion bomb body. Meanwhile, the utility model provides a multifunctional combustion analyzer which comprises a weighing mechanism, a mixed gas detection device, an analysis control system and a spectrum detection device, rapid measurement is realized.

The application discloses a hybrid rotary piston engine. A hollow rotating shaft is offset to the left of the center line of an eccentric cylinder by a certain distance, and a hollow body with a radio deep groove is arranged on the hollow rotating shaft. Two slide holes penetrating the rotating shaft and the deep groove of the hollow body are drilled on the deep grooves of the hollow body in the same plane. Four groups of slide holes are not cross-connected, and a slide rod with a spring in the middle is arranged in each slide hole. The size of a piston shutter is the same as that of the deep groove of the hollow body, and a roller is arranged on the piston shutter. Eight piston shutters are arranged in the deep groove of the hollow body, and protective plates are arranged on the two sides of the hollow body. Two gas pipes are arranged at the maximum radius of the eccentric cylinder, and the two gas pipes are connected with an exhaust pipe and a compressed air pipe through two four-way electromagnetic reversing valves. Two inclined fuel nozzles are arranged at the minimum radius of the eccentric cylinder, and a laser igniter is arranged beside the two inclined fuel nozzles. Two hot magnetic series motors are arranged to clamp a rotary piston engine in the middle, and a heat preservation shell is arranged to wrap the hybrid rotary piston engine and graphene powder.

The laser ignition device with the ignition state detection function comprises a clamping plate, a supporting rod and an adjusting mechanism, the adjusting mechanism is clamped to the supporting rod, an inserting rod is fixedly connected to the right side of the clamping plate, the clamping plate is inserted into the adjusting mechanism through the inserting rod, a fixing block is attached to an inner cavity of the clamping plate, and the fixing block is fixedly connected to the right side of the clamping plate. The upper side and the lower side of the fixing block are fixedly connected with connecting plates, the front sides of the two connecting plates are jointly and fixedly connected with a mounting plate, a swing mechanism is arranged on the left side of the mounting plate, and two limiting mechanisms are arranged on the rear side of the mounting plate; through mutual cooperation of the small motor, the arc-shaped sliding plate, the swing plate, the insertion block, a transmission rod, a screw rod, a hinge plate, a middle plate, a fitting plate, an arc-shaped toothed plate and the like, multi-directional pollution detection can be quickly performed on an optical window when laser path detection is needed, the detection range is widened, and the detection efficiency is improved. And the situation that stains appear on the surface of the optical window and are not detected is avoided.

The invention relates to the technical field of spaceflight, and discloses a carrier rocket propellant sinking method and system based on a solid-liquid rocket engine, the carrier rocket propellant sinking system comprises a main body assembly, the main body assembly comprises a main engine, a kerosene storage tank is arranged on one side of the main engine, and a liquid oxygen storage tank and a sinking engine combustion chamber are arranged on one side of the kerosene storage tank; and the air inlet is arranged on the liquid oxygen storage tank. The solid-liquid rocket engine has the beneficial effects that the oxygen air pillow of the liquid oxygen storage box is adopted as an oxidant of a combustion chamber of the bottom-sinking engine, the solid-liquid rocket engine is formed by matching with a polyethylene solid fuel grain or materials such as HTPB and PMMA which are commonly used for engine grains, and the fan-shaped vibration isolation plate is arranged in front of the grains to restrain the unstable combustion phenomenon; multiple times of starting are achieved through high-power laser ignition, compared with a traditional scheme, the higher specific impulse and propellant utilization rate are achieved, the negative weight is reduced, the efficient and light-weight requirements of the recoverable rocket are met, propellant management can be achieved in the low-gravity environment, and deceleration thrust can be provided during returning.

The present application relates to a kind of long process blast furnace ironmaking metallurgical production system and method using ammonia as coal powder carrier gas for tuyere detonation injection, belong to green metallurgical technical field.The system includes: coal powder storage and conveying unit: including crusher, coal powder bin, coal powder conveying pipeline and flow control valve, for crushing, storage and quantitative conveying coal powder;Ammonia supply unit: including ammonia storage tank, ammonia gas compressor, ammonia gas conveying pipeline and flow control valve;Mixing unit: respectively with the coal powder conveying pipeline and ammonia gas conveying pipeline connection, for mixing coal powder and ammonia according to preset ratio to form gas-powder mixture;Injection detonation device: gas-powder mixture in mixing unit is connected to the injection detonation device installed at the tuyere of blast furnace through injection pipeline, and the initiation assembly in injection detonation device is formed by the joint action of laser igniter and shock wave generator, and blast wave is formed, and blast furnace ironmaking process is carried out.The system mixes combustible gas and coal powder and injects, realizes the efficient combustion of hearth area using detonation combustion technology, improves the combustion efficiency and speed, reduces the dependence on coke, and reduces pollutant emissions.

A laser ignition system for igniting an ignition target includes a support structure, a laser assembly mounted to the support structure and configured to deliver a laser beam to the ignition target, and an inlet mounted to the support structure and configured to deliver a coolant to the laser ignition system.

The invention relates to the field of preparation of composite energetic materials, and particularly discloses a carbon dot-based photosensitive composite energetic micro-unit and a preparation method thereof. The composite energetic micro-unit takes carbon dots (CD) as a photosensitive material, a nano high explosive as an energetic component and a water-soluble polymer material / sodium alginate aqueous solution as a liquid-phase carrier, and the photosensitive material and the energetic component are dispersed into the liquid-phase carrier to prepare a precursor with flowability. And then, dropwise adding the precursor into an aqueous solution with an ion replacement material through a needle head in a manner of combining a sol-gel method and a ball dropping process, and carrying out ion replacement, pre-freezing and freeze-drying to obtain the photosensitive composite energetic micro-unit. The photosensitive composite energetic micro-unit prepared by the invention is uniform in component distribution, can be reliably ignited under multi-angle incident laser irradiation, is beneficial to improving the reliability of laser ignition high explosives, and has important practical application value in micro ignition and micro detonation.