36 results about "Flame structure" patented technology

The invention discloses a synchronous detection method for flow field and flame structures of a hydrocarbon fuel during supersonic combustion. The method employs pulsed schlieren for detection of the flow field structure of a supersonic combustion field and CH-PLIF for detection of the flame structure of the supersonic combustion field. Detection focal planes of the pulsed schlieren and CH-PLIF are respectively focused onto a same detection area in a supersonic combustion chamber and the pulsed schlieren and CH-PLIF are synchronously controlled through a pulse synchronous generator so as to realize synchronous detection of the flow field and flame structures during supersonic combustion of the hydrocarbon fuel. The CH-PLIF image of flame structure without background noise of the combustion chamber is superposed with the schlieren image of the flow field structure so as to obtain a synchronous superposition image of the flow field and flame structures of a same instant during supersonic combustion of the hydrocarbon fuel. According to the invention, an experimental detection method for synchronous acquisition of information about flow field and flame structures in a combustion field at a same instant is provided for research on the interaction mechanism of flowing and chemical reactions during supersonic combustion of hydrocarbon fuels.

The invention discloses a device for simplifying an internal combustion wave rotor experiment based on relative movement. The device comprises a gas inlet pipeline, a wave rotor channel, a connecting support, a sealing plate, a connector and other structures. Under the condition that the wave rotor channel is connected with a rotating shaft without the connecting support, the sealing plate is connected with the rotating shaft through the connector, the sealing plate rotates relative to the wave rotor channel, the wave rotor channel is in a static state, and the study on a wave rotor channel internal shock wave flame interaction mechanism and the non-steady flow and combustion process is conveniently conducted. The sealing plate is static, when the wave rotor channel is connected with the rotating shaft through the connecting support and rotates relative to the sealing plate, a specular reflection principle can be used for studying the change characteristics of a flame structure in the wave rotor channel under the action of a centrifugal force field through an observation window in the wave rotor channel.

A simulated flame structure comprises a bracket, a simulated flame element, a first magnetic element and a light-emitting element. The bracket is formed with a position limiting hole. The simulated flame element is restricted in the position limiting hole through a position limiting portion. The first magnetic element is disposed on the simulated flame element. The light-emitting element is disposed on the bracket and outputs light toward the simulated flame element. By magnetic attractive actions between the first magnetic element and a metal element in the position limiting hole, the simulated flame element may be suspended in the position limiting hole and naturally swing relatively to the bracket, thereby achieving visual effects of optimized flame combustion.

A toy or game apparatus that includes a base in the shape of a cupcake, a simulated flame structure movable between an exposed-to-view position and a hidden-to-view position within a simulated candle structure, a support structure mounted to the base with a top edge in contact with a bottom edge of the flame structure to support the flame structure in the exposed position, a reset structure having a slanted top surface to enable the flame structure to move to the support structure and have the top edge of the support structure engage the bottom edge of the flame structure, the candle structure being depressible for moving the support structure relative to the reset structure, and a spring for raising the flame structure and the support structure so that the flame structure is again exposed, is disclosed and described.

The invention relates to a device and a method for synchronously or selectively exciting and measuring flame CH groups and NO molecules, belonging to the technical field of combustion component visualization research. A laser, a focusing lens and a space calibration plate arranged at the central plane of a combustor are arranged in order, two ICMOS cameras on the same space focusing plate are arranged towards the combustor, are located at the sides of the combustor and have the same optical distance from the combustor, the cameras are provided with optical filters coaxially arranged and located at the same horizontal height, the pulse signal output end of a pulse signal generator is connected with the laser and the signal input ends of the cameras, and the signal output ends of the camerasare connected with the signal input end of the computer. The device and the method for synchronously or selectively exciting and measuring flame CH groups and NO molecules do not interfere with the flame structure of the combustion field of the combustor, the device is simple, the cost is saved, the synchronous measurement or selective measurement of CH groups and NO molecules in the combustion process is achieved, synchronous excitation or selective excitation of two groups is achieved, and therefore, the device and the method for synchronously or selectively exciting and measuring flame CHgroups and NO molecules have important significance for the combustion mechanism and the control of pollutant NO emission.

The invention discloses an experimental device for simulating an influence mechanism to flame structure flow field characteristics of bottom cross wind. The experimental device comprises a combustion box body, a wind tunnel system and a measurement and control system. The bottom of the combustion box body is provided with an open structure, and hollow stainless steel tubes are arranged every 10 cm on the open structure. One side face of the open structure is an observation window, and an operation opening is formed in the middle of the wall face corresponding to the observation window. The wind tunnel system is placed at the bottom of the air tunnel system and comprises a box body, a fan and a rectifying device. The length, the width and the height of the box body are the same as those of the combustion box body. The upper portion of the wind tunnel system is communicated with the bottom of the combustion box body, and the bottom of the wind tunnel system is close to the ground. The fan is placed at one end of the box body, and the other end of the box body is open. The rest two faces are closed by quartz heat insulation plates with the thickness being 8 mm. The experimental device is used for studying the occurrence regularity of internal fires and plume spreading rules in a limited space when the wind is placed at the bottom of a fire source, and a theoretical support is provided for developing related extinguishing methods and control measures.

The invention relates to the field of illuminating lamps, in particular to an attractive courtyard lamp structure with a flame shape. The courtyard lamp with the flame shape comprises a rod body and a lamp holder structure which is connected onto the upper end of the rod body, wherein the lamp holder structure is pivoted on a lamp circular truncated cone through a lampshade supporting rod and is fastened on the lamp circular truncated cone through a fastening structure, a lamp flange base is fixedly arranged at the lower end of the lamp circular truncated cone, a control circuit board is arranged in the lamp circular truncated cone, an illuminating lamp tube is arranged in the lamp holder on the lampshade supporting rod, an elliptical lampshade is arranged outside the illuminating lamp tube on the supporting rod, a plurality of flame-shaped steel sheets are symmetrically fixed outside the lampshade supporting rod, and a flame structure formed by the plurality of flame-shaped steel sheets encloses the elliptical lampshade. The courtyard lamp with the flame shape not only is practical, but also can be attractive for a long time and has better overall heat radiating performance.

The invention discloses a fan blade type turbulence fire extinguishing device, and relates to the technical field of fire disaster treatment devices. The fan blade type turbulence fire extinguishing device comprises an air box, connecting plates and partition plates. One side of each connecting plate is fixedly connected with the inner wall of the air box, and one sides of the partition plates are fixedly connected with one sides of the connecting plates. According to a fan blade type vortex flame device, baffles not only play a role in controlling gas circulation and flow velocity, but also play a role in sealing gas through a sliding mode, two to four kinds of gas can be filled for experiments according to the requirements of the experiments, the experiment diversity is increased, and multiple kinds of fire extinguishing gas can be subjected to comparative fire extinguishing performance experiments under the same condition. Three air inlet pipelines are closed, one ventilation pipeline is opened, fire extinguishing gas is introduced, the situation that a firefighter on site can only extinguish fire on one side due to terrain limitation when facing a fire disaster is simulated, guiding significance can be achieved on site fire extinguishing according to experimental data, the gas inlet speed and the air inlet size are dynamically changed, and observation of influences of gas flow velocity changes on characteristics such as a flame structure, a flow field and colors is completed.

The invention relates to a An electric fireplace with a flame curtain comprises a housing, a light source, a flame curtain with integral structure being disposed on the electric fireplace and in front of an electric fireplace flame generator, an imaging mechanism and a charcoal bed being disposed on the flame curtain, and a number of light-holding charcoal with a plurality of transparent surfaces being disposed on the charcoal bed. The essential effect of the present invention is to solve the problems of constant charcoal flame brightness, the lacking of reality and the bad charcoal flame simulation effect in conventional electric fireplaces. Meanwhile, the problems of constant charcoal flame shape, dull appearance and poor visual effect in conventional electric fireplace are solved as well. The present invention is of simple structure and easy assembly process, while the charcoal flame structure can be arbitrarily changed, the light-spots of the flame are sparkling intermittently with bright and shade, and the flame is of light-holding effect. The visual effect and the authenticity are both perfect.

The invention discloses an assembled turbulent flame extinguishing device, whichrelates to the technical field of fire extinguishing devices, and comprises an air box, a partition plate and an arc-shaped plate, wherein one side of the partition plate is fixedly connected with the inner wall of the air box, and one side of the partition plate is fixedly connected with one side of the arc-shaped plate. According to the assembled turbulent flame extinguishing device, the effect of controlling whether air in the air box circulates or not and controlling the flow speed is achieved through the rotating mode of the rotating drum, air entering is quantitatively controlled through the rotating drum, assistance is provided for providing more accurate fuel mass loss efficiency, and two kinds of air are filled into the air box through the vent holes for an experiment; the flow of air on the opposite side can be controlled at the same time only by rotating the rotating drum, the air flow can be controlled more accurately, errors are smaller, experimental data are more accurate, and the influence of air entering the turbulent flame flow field, the flame structure, the flame color and other typical characteristics can be observed while the rotating drum is rotated; a dynamic observation experiment is realized, and the fire extinguishing performance of the water mist and halogenated hydrocarbon fire extinguishing agent can be dynamically observed.

The invention discloses a preparation method and a production device of large-particle spherical glass, a gas-material co-spraying balling process is adopted, in the balling process of the glass, the glass does not make contact with other materials, the surface is smooth, and secondary treatment and cleaning are not needed. And the outlet of a high-temperature furnace adopts a trumpet-shaped flame structure, so that the static pressure of a high-temperature section is increased on the basis of ensuring the low-temperature kinetic energy of the frit, and the high-temperature separation of gas and solid glass balls is strengthened while the frit is fully heated. Oxygen-enriched combustion flames are adopted, so that the rigidity of the flames is improved, the atmosphere in the combustion process is ensured, and the color of the glass is stable. And a gas and furnace temperature linkage control technology is adopted, so that the product quality is ensured, and the production cost is reduced. A furnace body structure step-by-step heat preservation technology is adopted, so that the high temperature is not reduced, the low temperature is not increased, meanwhile, the cost is saved, and the production efficiency is improved. And the top cover is cooled by water, so that the service life of the equipment is fully prolonged while environmental protection is realized.

The invention discloses a forming mold and a preparation technology for a laminated solid propellant. The forming mold for the laminated solid propellant compacts ammonium perchlorate slices by usingthe cooperation of a groove mold with different specifications with a press mold, so the production efficiency of the prepared slices is improved. A vacuum box is vacuumized before curing, so a largeamount of air bubbles is effectively prevented from remaining in the adhesive layer of the propellant. The thickness of the adhesive layer is controlled by a height control plate; and when the laminated propellant is cured, a zigzag curing plate is used to prevent the propellant from sticking to the curing plate, so the problem of easy breakage during peeling of the propellant on the curing platebonded to the curing plate is solved. A gap between the adhesive layer and the ammonium perchlorate flakes after vacuumizing is eliminated by arranging a weight on the height control plate. The preparation technology can significantly improve the molding preparation efficiency of the solid propellant, and provides the laminated propellant with different specifications for the observation and research of the propellant flame structure; and the preparation technology has the advantages of simplicity in operation, high molding rate and time saving.

An ever-burning lamp with an inner flame and an outer flame, comprising a gas pipe fitting (1), an air regulating sleeve (2), a lamp body (3), a premixing chamber (4), a nozzle (5), and a flame stabilizing tube (8), The premixing chamber (4) is located on the upper part of the lamp body (3), the lower end of the chassis of the nozzle (5) is connected with the upper end of the lamp body (3), and the upper end thereof is connected with the flame stabilizing tube (8); the nozzle (5) The neck is provided with a plurality of primary spray holes (6), and its outlet is a secondary spray hole (7). With the above technical solution, the eternal light proposed by the present invention adds an inner flame structure, which is equivalent to setting a spare fire for the eternal light. When the outer flame of the eternal light is extinguished, the inner flame that has been burning will quickly ignite the outer flame, and the safety and reliability of the eternal light are further enhanced. .

The invention provides a supersonic combustion instantaneous flame structure high time-space resolution visualization system. The supersonic combustion instantaneous flame structure high time-space resolution visualization system comprises a laser unit, a supersonic combustion chamber and a data acquisition unit. The laser unit is used for generating laser, shaping the laser into a laser light sheet and then conducting the laser light sheet into the supersonic combustion chamber; the supersonic combustion chamber is provided with a laser incidence window and a data acquisition window, the laser light sheet is incident into the supersonic combustion chamber through the laser incidence window, hydrocarbon components generated in the combustion process are subjected to photolysis, CH photolysis fluorescence is generated, high-temporal-spatial-resolution imaging is conducted on the photolysis fluorescence through the ICCD camera, and high time-space resolution visualization of the supersonic combustion instantaneous flame structure is realized. A complex dye laser is not needed, wavelength tuning is not needed, and the laser is simple and portable in structure and convenient to maintain and use.