31 results about "Laser ignition" patented technology

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.

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.

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 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.

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 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 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 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.

This invention discloses a laser ignition method for a fluidized bed boiler, comprising: calculating the amount of ignition bed material, wherein the bed material includes bed material and fuel, wherein the fuel includes mineral fuel or non-mineral fuel, and the non-mineral fuel mainly includes at least one of biomass fuel and combustible municipal solid waste; guiding an indicator light for indicating the laser beam to a target area on the bed surface of the furnace, and defining the target area as the laser scanning area; laying multiple ignition layers in the furnace, wherein the multiple ignition layers include the bed material and the fuel; and after each ignition layer is laid, scanning the ignition layer in the laser scanning area with the laser beam. The above laser ignition method, without involving any modification to the boiler body, neither consumes additional fuel nor fails to meet the process requirements for heating large-volume bed material, achieving safe, reliable, and efficient laser ignition, combustion assistance, and stable combustion.

A system and method for igniting a coal-air-fuel mixture includes a burner (14) having a burner tube (100) and a first flow guide (118), the burner tube being operable to deliver a flowing fuel-air mixture to a furnace for combustion therein, the first flow guide disposed within the tube and operable to guide a first portion of the flowing fuel-air mixture to a specific location within the burner tube. The system also includes a laser igniter (17) within the burner tube (130), the laser igniter comprising a laser tube (110) and a laser source (150), the laser tube having a first end with a laser input and a second end with a light output, the laser source being operatively coupled to the laser input. The laser source includes a laser. The laser igniter guides photons from the light output to the location within the burner tube to ignite at least a portion of the first portion of the fuel.

The invention discloses a copper azide-based complex, a preparation method thereof and application of the copper azide-based complex in energetic materials, and belongs to the field of energetic materials. The chemical formula of the azide copper-based complex is Cu2C4H7N21. The invention further discloses a preparation method of the azide copper-based complex. The azide copper-based complex has good stability and safety at the same time. The laser sensitivity of the azide copper-based complex is enhanced by more than 7000 times compared with that of single lead azide, and hexogen can be successfully detonated; compared with a standard commercial laser ignition agent B / KNO3, the laser sensitivity is enhanced by more than 1000 times, and meanwhile, the defects that the standard commercial laser ignition agent B / KNO3 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 application discloses an open type solid fuel calorific value measuring device, which comprises a laser ignition unit for igniting solid fuel in a calorific value measuring cavity, the calorific value measuring cavity comprising an inner cylinder and an outer cylinder from inside to outside in sequence to provide a combustion chamber, a sample loading structure for feeding solid fuel into the combustion chamber of the calorific value measuring cavity, and a data processing unit for collecting temperature and oxygen flow data of solid fuel combustion and calculating the calorific value of the solid fuel. The application also discloses a measuring method, which comprises the following steps: feeding a solid fuel sample into the calorific value measuring cavity through a crucible; introducing oxygen to the upper surface of the crucible; irradiating a laser beam to the surface of the solid fuel for ignition; collecting the inlet air temperature, outlet air temperature, inner cylinder temperature, outer cylinder temperature, crucible tray temperature and oxygen flow data, and calculating the calorific value of the solid fuel. The device and method avoid the limitation of high pressure environment of an oxygen bomb and reduce the requirement for external environment, and the accuracy of calorific value measurement is relatively high.

The utility model relates to a laser ignition device, a laser guiding assembly and an internal combustion engine. The laser guiding assembly comprises a sleeve, a light guiding part and a field lens. The light guide piece is arranged in the sleeve in a penetrating mode. The field lens is installed on the sleeve and located in front of the light guide piece, and a plurality of annular light-emitting parts which are sequentially arranged in a nested mode from inside to outside are arranged on the light-emitting face of the field lens. During use, the light guide part transmits laser emitted by the laser device to the field lens, the laser is shaped by the field lens and is emitted outwards through the plurality of light emitting parts of the light emitting surface, and the laser emitted outwards is a plurality of annular light spots which are sequentially nested from inside to outside. Furthermore, when the multiple annular light spots hit the ignition positions of the combustion chamber, the overall area is large, and the number of the ignition positions is large. Therefore, the situation that materials in the cylinder are damaged due to the fact that the light spot energy density is too concentrated due to the small light spot area can be prevented, the ignition success rate can be increased due to the large ignition area, fuel can be fully combusted, and therefore the fuel utilization rate is increased, and emission of harmful substances is reduced.

The invention relates to the technical field of energetic materials, in particular to a composite energetic material with molecular perovskite DAP-4 growing on the surface of MXene in situ and a preparation method and application thereof.The preparation method includes the steps that triethylene diamine and ammonium perchlorate are sequentially added into MXene suspension liquid, and stirring is conducted to obtain an MXene precursor solution; and dropwise adding an HClO4 solution while stirring to obtain DAP-4-coated MXene composite particles, continuously stirring, carrying out suction filtration, washing, and drying to obtain the composite energetic material. By adopting the steps, DAP-4 crystals are crystallized and grown on the surface of the MXene sheet layer in situ, so that the laser energy absorption and heat conduction efficiency of the material can be improved, and the photothermal conversion efficiency of DAP-4 is remarkably improved, thereby effectively reducing the laser ignition threshold and shortening the ignition delay time. Meanwhile, the MXene can also enable the material to show higher energy release efficiency in the combustion process.

The utility model discloses a laser ignition oxygen bomb which aims to solve the problems that a laser head of an existing oxygen bomb is inconvenient to replace, poor in heat conductivity, poor in contact, insufficient in sealing performance and the like. The oxygen bomb mainly comprises an oxygen bomb cylinder cover, an oxygen bomb cylinder, an oxygenation mechanism and a laser ignition mechanism. The oxygen filling mechanism realizes uniform oxygen filling through symmetrical oxygen filling channels; and the laser ignition mechanism is connected through a screw, so that modularized replacement of the laser head is facilitated. The laser electrode is accurately matched with the insulation pad and matched with the spring to form secondary protection, so that stable contact is ensured; the glass column upper and lower pads and the laser outer cover outer pad form a three-level waterproof structure, and meanwhile, a heat conduction path is optimized. The crucible and the laser head are coaxially arranged, so that accurate ignition of a sample is ensured. According to the utility model, the laser head can be quickly replaced, the heat conduction and ignition reliability is improved, the sealing and waterproof effects are enhanced, the glass column is prevented from being polluted, a sample is combusted more sufficiently, the test result is more accurate, and the applicability and reliability of the oxygen bomb in experimental analysis and industrial production are improved.

1. Name of the product in this design: Portable multi-functional power bank. 2. Purpose of this design: To charge electronic devices and to have a laser ignition function. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

According to the small low-power semiconductor laser ignition device, an energy transfer structure of detonating cord-explosion-to-ignition assembly is adopted, compared with an optical fiber, the detonating cord is low in vulnerability and can better adapt to the severe working environment, and the working reliability of the laser ignition device under the extreme working condition is improved; the functions of wireless ignition, time sequence ignition and multi-point ignition are achieved through wireless communication, and the problem that most existing laser ignition systems can only achieve the single-point ignition function is solved. Besides, the laser ignition device also has the characteristics of self power supply, small size, difficulty in damage, multi-point control and sequential control, and can make up for the defects in the prior art, so that the laser ignition device can be applied in more scenes.

The application relates to the technical field of engine testing devices, in particular to a continuous laser gas igniter device suitable for a constant volume combustion bomb and an ignition testing method. A semiconductor continuous laser module adopts a semiconductor laser with a preset wave band, and outputs laser through a driving circuit receiving an instruction of a control module; an ignition target point module is composed of high-absorptivity high-temperature-resistant small balls with holes and a suspension wire; a magnetic attraction adjusting module realizes adjustable target point position through cooperation of strong magnets on the inner and outer sides of the constant volume combustion bomb; and a control module realizes time sequence control of multi-point ignition through a delay pulse synchronous trigger. The application has the advantages of strong anti-background interference ability, small space interference, low cost, easy realization of multi-point ignition, precise control of ignition time sequence and the like, can be adapted to various constant volume combustion bomb experimental devices such as spherical and square constant volume combustion bomb experimental devices, is suitable for ignition test of high ignition energy fuels such as ammonia and diesel oil, and provides reliable ignition technical support for engine combustion mechanism research and the like.