105 results about "Smoke screen" patented technology

The invention provides a manufacturing technique of a wash-resistant and flame-retardant blended fabric. The technique comprises the following steps of: 1) preparing a cotton fiber flame-retardant coating adhesive; 2) coating the coating adhesive obtained in the step 1) on the cotton fiber and carrying out heat setting to the cotton fiber so as to obtain a flame-retardant cotton fiber; 3) preparing a glass fiber flame-retardant coating adhesive; 4) directly coating the coating adhesive obtained in the step 3) on the glass fiber and carrying heat setting on the coating adhesive so as to obtaina flame-retardant glass fiber; and 5) blending one of the flame-retardant cotton fiber obtained in the step 2) and a carbon fiber or the flame-retardant glass fiber obtained in the step 4) and one ofa flame-retardant polyester fiber or a flame-retardant nylon fiber so as to obtain the product of the invention. The manufacturing technique of the wash-resistant and flame-retardant blended fabric, provided by the invention, has the advantages of simple process, low cost, good product permeability, softness as well as good wash resistance and flame retardation. The manufacturing technique of thewash-resistant and flame-retardant blended fabric, provided by the invention, is mainly used for manufacturing products like smoke screens, fire-proof insulated curtains, bedspreads, flame-retardant furniture and the like.

The invention provides a smoke screen environment simulating device which comprises a walking mechanism, a box body and a control system. The inner portion of the box body is an enclosed space, protection glass is installed on the front wall and the back wall of the box body respectively, a lighting lamp is installed at the top of the box body, a smoke outlet is arranged above the right wall of the box body, a smoke extraction fan and a filter plate are installed on the smoke outlet, an air inlet is arranged below the right wall of the box body, an air suction fan and an air inlet cover plate are installed on the air inlet, stirring fans are installed on the left wall and the right wall of the box body, a smoke agent putting port is arranged below the left wall of the box body, and a side cover plate is installed on the smoke agent putting port. An electronic balance is installed at the position of the bottom of the inner portion of the box body close to the side cover plate, a smoke agent box is placed on the electronic balance, an ignition head is arranged above the smoke agent box and fixed in the box body through a support, and the walking mechanism, the smoke extraction fan, the air suction fan, the stirring fans and the ignition head are controlled through the control system. The smoke screen environment simulating device can move in a linear mode, ignites a smoke agent automatically to generate smoke screen environment which is stirred evenly, and can estimate smoke concentration.

The invention discloses a system and method for projection by using firework smoke as a screen. The system comprises a projecting device system, a firework smoke screen and light beams, wherein the projecting device system is used for projecting optical image information; the firework smoke screen is used for reflecting images; and the light beams are used for shooting to the firework smoke screen. The method comprises the following steps of: operating and controlling light beam image information projected to the firework smoke screen by the projecting device system installed on the ground through using a projection method, and forming single or continuous moving image or pattern or word pictures after reflecting the images by using the firework smoke screen, wherein the firework smoke screen is formed from single or a plurality of smoke clouds generated during transmitting or jetting at least one independent firework combination to airspaces with the same height for setting off in the air or on the ground or stage or water surface. The invention has no limitation on natural conditions; and the generated images are clear, have the advantages of association of activity and inertia, interaction of flames and the images and multilayer stereoscopic autokinetic effect, and can meet demands and art aesthetic enjoyment of audiences.

The invention discloses a measuring system and method for a shadowing effect of a smoke screen on laser. The measuring system comprises at least two laser transmitters, and a laser receiver which is used for receiving laser transmitted by the laser transmitters and for detecting an energy density value of the laser. The measuring system also comprises an industrial control computer which is connected with the laser receiver and is used for collecting the energy density value of the laser; the industrial control computer is used for processing data of the collected energy density value of the laser and acquiring a change rule with time of the transmittance through the smoke screen of the laser transmitted by the laser transmitters; according to the measuring method, the transmittance through the smoke screen of the laser is measured by the measuring system, and the transmittance through the smoke screen of more than two paths can be simultaneously measured. A plurality of laser transmitters are adopted for transmitting the laser, the laser irradiates at a plurality of positions on the smoke screen released at one time, and the transmittance through the smoke screen of the laser at the plurality of positions on the smoke screen can be measured, therefore, the confidence of a measurement result is effectively improved, and the measurement cost is saved.

The invention discloses a fire-proof and oil smoke clarifier for removing fire hazard in the oil smoke duct of the kitchen and cleaning the oil smoke duct. The water pump presses the water of the tank in the water burner cap of water spray smoke duct, and the water burner cap sprays water to the oil smoke screen, the oil soot in the oil smoke is separated from the gas by intercepting with oil smoke screen when the oil smoke which is sucked to the oil smoke duct by the air extractor enters the water spray duct, and the oil soot on the oil smoke screen and water flow from the discharging port of the water spray duct to the discharging pipe to the water tank under the terrestrial gravity when the oil smoke screen is sprayed by the water spray cap. The fire star on the cooking stove is sucked to the oil smoke duck by the air extractor and is extinguished by the water sprayed by water spray cap, and the big fire star is intercepted by the oil smoke screen of the spray water smoke duck and is extinguished by the water.

The present invention is a radio-controlled (RC) model aircraft system with laser tag capabilities. A transmitter and receiver are each installed in at least two separate RC aircrafts. The transmitter on one aircraft emits an infrared light beam to the receiver on the other aircraft(s) that changes the infrared signal to a first servo to move an arm, which releases a model aircraft door behind which there are ribbons. The ribbons escape from the aircraft wings to show a hit. An optional second servo operate a smoke screen and eject a pilot to simulate actual combat. The system may also include audio and lighting effects to simulate firing and hit sequences with accompanying theatrical, physical effects including release of smoke and ribbons, and ejection of the pilot that realistically simulates air combat.

The invention belongs to the technical field of infrared stealth, in particular to an infrared smoke screen generation device. The infrared smoke screen generation device comprises a particle tank (3) for storing smoke screen particles (4), a control valve (5), a conveying pipe (6) and a nozzle (9), wherein the particle tank (3) is connected with the conveying pipe (6) through the control valve (5); the nozzle (9) is mounted at the tail end of the conveying pipe (6); the air pressure in the particle tank (3) is greater than the external ambient pressure; after the control valve (5) is opened, the smoke screen particles (4) in the particle tank (3) are output due to the air pressure difference, and reach the nozzle (9) through the conveying pipe (6); and the smoke screen particles (4) are sprayed out by the nozzle (9) to form an infrared smoke screen. The infrared smoke screen generation device realizes an acceleration and centrifugal diffusion technology of the smoke screen particles, and can adjust the pressure in the particle tank and the flow speed of air in an acceleration and rotation increasing system to control the particle flow of a smoke screen cloud cluster, the forming speed of the smoke screen cloud cluster, the smoke screen density and the like.

The invention relates to a method for simultaneously measuring smoke screen attenuation rate and radiation intensity. The method is characterized in that when a smoke screen is not released, the environment radiation intensity and the atmosphere attenuation coefficient can be measured by blackbodies and infrared detectors; and when the smoke screen is released, the smoke screen attenuation rate for shielding the blackbodies and the infrared radiation intensity are simultaneously measured based on the environment radiation intensity and the atmosphere attenuation coefficient. According to the method, the multi-point smoke screen attenuation rate and radiation intensity can be measured through the arrangement of a plurality of infrared detectors.

The invention provides a testing method used for evaluating the visible light smoke screen shadowing effect and belongs to the technical field of modern smoke screens. The method is used for detecting whether a smoke screen forms effective shadowing and detecting smoke screen duration, smoke screen effective size and other efficacy parameters. A marker post serves as a background reference. A marker post spectrum image penetrating through the smoke screen is collected by means of an acousto-optic turnable filter (AOTF) spectrum imaging instrument; a data processing terminal conducts weighted synthesizing on the collected spectrum image to obtain a true color image based on human eye thresholds, and the true color image is compared with a non-smoke-screen-shadowing true color image collected before smoke screen releasing to evaluate whether the smoke screen forms effective shadowing or not; according to the formula in the description, the size of the smoke screen is measured; the smoke screen formation time is measured according to the whole shooting process of the spectrum imaging instrument. Compared with the prior art, the method has the advantages of being simple in calculation, easy to operate, capable of saving time and labor and high in efficiency.

The invention relates to the technical field of tail gas treatment, in particular to a chemical equipment tail gas treatment device. The chemical equipment tail gas treatment device is characterized in that a transverse partition plate is arranged in the middle of the inside of a shell, a water delivery mechanism is fixed to the middle upper end of the shell, the inside of the shell is sequentially divided into a tail gas filter chamber, a tail gas dust removal chamber and a tail gas demisting chamber from bottom to top by the transverse partition plate and the water delivery mechanism, harmful pollutants in tail gas can be removed by the tail gas filter chamber by means of multistage filtering, dust in the tail gas can be efficiently removed by the tail gas dust removal chamber by the aidof formed smoke curtains and multistage water curtains, and the tail gas can be efficiently demisted by the tail gas demisting chamber by the aid of a simple demisting mechanism. The chemical equipment tail gas treatment device has the advantages that the chemical equipment tail gas treatment device is long in flue gas retention time in procedures for carrying out adsorption reaction on harmful substances in the tail gas, and fillers are difficult to harden; flue gas dust removal procedures can be thoroughly carried out, excellent synergistic effects can be realized, the chemical equipment tail gas treatment device is simple in structure, the demisting mechanism is convenient to dehydrate and long in service time, and the locations of travel wheels are convenient to fix.

The invention relates to a movable multifunctional window body used for a smoke screen test box. The movable multifunctional window body comprises a base cylindrical shell, two seal washers, two fastening rings, two round end caps and two compression rings, wherein the base cylindrical shell is in a cylindrical shape, and the two ends thereof are provided with external threads; the two seal washers are respectively sleeved on the external threads at the two ends of the base cylindrical shell; each fastening ring is provided with inner threads with two different diameters along the axial direction, and the inner threads with the larger diameter is matched and connected with the external threads of the base cylindrical shell; a flat surface is arranged at one side of each round end cap, and a convex ring is arranged at the other side of each round end cap; the convex ring is provided with external threads which are matched and connected with the inner threads with the smaller diameter in the fastening ring; the middle of each round end cap is provided with concentric holes with different diameters, wherein a first concentric hole with the smaller diameter is positioned at the middle of the convex ring of the each round end cap, and a second concentric hole with the larger diameter is positioned at the middle of the flat surface of the each round end cap and is provided with inner threads; and the compression rings are provided with external threads which are respectively matched and connected with the inner threads of the concentric hole with the larger diameter on each round end cap.

According to a real-time optical smoke screen rendering method based on the physical process provided by the embodiment of the invention, in the process of rendering smoke by utilizing an illuminationsmoke model and an infrared smoke model, a density grid, a temperature grid and a brightness grid are obtained through calculation according to the influence of factors such as background radiation,an external light source and the transmittance of the smoke on smoke rendering; meanwhile, a spontaneous radiation model is introduced into the infrared model, the transparency and brightness of smokeare calculated based on a density grid, a temperature grid and a brightness grid meter, and mixed rendering is conducted on pixels in the sight line direction of the current position of a previous time frame based on the brightness and transparency of rays; and the visual authenticity and the illumination accuracy of smoke rendering are improved while the efficiency is considered.

The invention discloses a device and a method for measuring infrared transmittance of an infrared interference smoke screen in vacuum. The device for measuring the infrared transmittance comprises a vacuum tank, a vacuum smoke formation chamber, a pipeline, a vacuum pump, a filter and a glass fiber filter membrane, wherein the vacuum smoke formation chamber is fixedly arranged on the surface of the outside of the vacuum tank, the vacuum smoke formation chamber is communicated with the vacuum tank, and the glass fiber filter membrane is arranged at the joint between the vacuum smoke formation chamber and the vacuum tank; the vacuum tank and the vacuum pump are connected through the pipeline, and the filter is arranged at the joint between the pipeline and the vacuum pump; the vacuum pump is used for adjusting the vacuum degree in the vacuum tank; an ignition device is arranged in the vacuum smoke formation chamber and used for igniting an infrared interference smoke screen producing agent to generate the infrared interference smoke screen. The device and the method for measuring the infrared transmittance can be used for testing the infrared transmittance of the infrared interference smoke screen in the specific granularity interval.

An interference performance clamping plate type cascading test device for a smoke screen comprises clamping plate sets, fixing rack sets and supporting plate sets. The clamping plate sets are vertically arranged and fastened by the fixing rack sets in a front-back mode, and the clamping plate sets and the fixing rack sets are installed on the supporting plate sets. Each fixing rack set is in a right-angle long strip shape, and one side of each fixing rack set is provided with a trapezoid annular hole. Sample clamping plat sets with different thicknesses are fixed conveniently through screws. After being detached into the clamping plate sets, the fixing rack sets and the supporting plate sets at ordinary times, the testing device is convenient to carry to a test field. A test method includes the steps that after the test device is assembled, a photoelectric signal emitter is erected on one side frame, and a receiver is erected on the other side frame; when infrared, millimeter-wave and electromagnetic signals emitted by the emitter penetrate the clamping plate sets on the same layer or multiple layers, the receiver on the other side face can measure the change of intensity of the signals quantitatively; the change, generated before and after the signals penetrate a tested sample plate, of the intensity of the infrared, millimeter-wave and the electromagnetic signals emitted by the emitter are compared, and interference performance of a smoke screen material can be assessed quantitatively.

A mixture and method of creating the mixture includes mixing hexachloroethane, stannous oxide, and aluminum together. The mixture may be loaded into at least one canister. The mixture may be combusted to create a smoke screen. The loading of the mixture into the at least one canister may include pressurized loading at loading pressures in the range of approximately 2300 psi to 3600 psi. The hexachloroethane may include approximately 30-40 parts by weight of the mixture and have a particle size of approximately less than 850 μm. The stannous oxide may include approximately 55-65 parts by weight of the mixture and have a particle size of approximately less than 150 μm. The aluminum may include approximately 5-10 parts by weight of the mixture and have a particle size of approximately less than 45 μm. The mixture is devoid of zinc chloride.

The invention relates to a new application of carbon black in the optoelectronic countermeasure smoke screen, a fuming method and devices for realizing the method. The fuming method comprises the following step of preparing a smoke agent, canning and igniting, wherein the smoke agent is driven by a compressed gas to form a smoke screen, the prepared smoke agent is one-component carbon black, compressed air is filled during canning, a valve is used for ignition to replace a firing device, and the smoke-forming agent is driven by compressed air so that the agent is not heated, aerosol is formed and discharged in the air and an interference smoke screen is formed, and carbon black is perferably selected from ultrafine carbon black powder. The fuming devices contain a flow adjusting valve, a nozzle, a bottom ring, a guide tube, a guide tube plug seat, a powder-absorbing tube, a barrel, a machine head, a pressure gauge, a thimble, a carrying handle, a safety pin and a pressing handle. By adopting the fuming method and the fuming devices, visible light signals, laser signals and middle and far infrared signals can be effectively interfered; the formula does not contain a lot of dangerous chemicals and toxic substances and the smoke-forming components are greatly increased, thus energy can be saved and the environment can be protected; and the problem that the ignition times are different at different temperatures can be avoided and fuming can be stopped at any time according to needs.

An air suspension smoke screen particle sampling device comprises a sampling pipe, a fixing strap and a triangular support. The sampling pipe is composed of a pipe body, a filter screen head and a sealing gasket. The sampling pipe is fastened to the triangular support through the fixing strap. A cavity is formed in the pipe body. A pipe opening in one end is connected with the filter screen head. A pipe opening in the other end is connected to a sampling pump through a hose. The filter screen head is composed of a filter screen and a filter screen supporting gasket. The filter screen is in the shape of a fine crossed gridding, and the filter screen head and the pipe body are fixed together through two screws. The middle of a combined portion is sealed through the sealing gasket. According to an air suspension smoke screen particle sampling method, the suspension smoke screen particle sampling device is placed in a super-atmosphere suspended particle system, the tail of the sampling pipe and a vacuum pump are connected through a connecting pipe, after the vacuum pump is started, air flow carrying smoke particles will enter the inner cavity of the pipe body by means of suction force of the vacuum pump, air and tiny particles will penetrate through the filter screen, the smoke particles will be attached to the filter screen, and smoke screen particle samples are obtained.

The invention discloses a novel environment-friendly combustion type smoke agent based on a polyurethane porous material, and belongs to the technical field of smoke agents used for electromagnetic shielding. Polyol and isocyanate are used as raw materials to prepare the polyurethane porous material by adopting an all-water foaming technology, the polyurethane porous material is compounded with magnesium powder, aluminum powder, polytetrafluoroethylene, phthalic anhydride and the like according to a certain proportion, and the obtained mixture is pressed into a medicine column to obtain the combustion type smoke screen agent with the press-fitting density of about 1.15 g/cm<3>. Compared with a traditional smoke screen agent, the smoke screen agent has the advantages of being easy to ignite, large in smoke yield, long in duration time and small in pollution, the electromagnetic shielding efficiency in the X wave band can reach 30 dB, the infrared transmittance is close to 0%, and the good electromagnetic shielding effect is achieved.

The invention relates to the technical field of special vehicle safety protection, in particular to a dispelling antiriot vehicle used by public security, armed police, regimental police and armies. The dispelling antiriot vehicle comprises a chassis, a carriage and a storage battery. A barrel is arranged on the top of the carriage, and a cover plate is arranged on the barrel and is connected with a turning arm. The turning arm is connected to the top of the carriage through a cover plate oil cylinder. The carriage is bullet-proof and is provided with a hydraulic control assembly, a hydraulic lifting table and a dispelling device. A hydraulic rotary motor is connected between the hydraulic lifting table and the dispelling device. A hydraulic motor, a power generator, a storage cabinet and a louver are installed in the carriage. A protective railing, a push shovel and a warning lamp are installed on the chassis. The carriage has bullet-proof and antiriot functions so that the dispelling device can be used for dispelling by means of spontoon electric shock, tear bomb throwing or smoke bomb throwing, high-pressure water cannon ejecting and intense sound and intense light devices according to violent incidents. Surrounding people can hide in the bulletproof carriage when being hurt and are prevented from being hurt more seriously.

The invention discloses a particle size distribution measuring device and method for infrared interference smoke screen in vacuum. The device comprises a vacuum tank, a pipeline, a vacuum pump and a multi-layer filter membrane serial piece; the vacuum tank and the vacuum pump are connected through the pipeline; the multi-layer filter membrane serial piece is arranged at the junction of the pipeline and the vacuum pump; the vacuum pump is used for adjusting the vacuum degree in the vacuum tank; the multi-layer filter membrane serial piece comprises multiple layers of glass fiber filter membranes, and is used for collecting smoke particles; the multiple layers of glass fiber filter membranes are arranged from large to small according to pore diameters in sequence; an igniting device is arranged at the upper portion of the vacuum tank, and is used for igniting an infrared interference smoke screen smoke agent, and therefore smoke is generated. According to the particle size distribution measuring device and method for infrared interference smoke screen in vacuum, the measurement error is reduced, and the measurement accuracy is improved.

The invention discloses a smoke screen interference efficiency obtaining method. The method comprises the steps: obtaining a first infrared image of a test scene in a smokeless screen environment anda second infrared image of the test scene in a smokeless screen environment; generating a first target array based on the first infrared image and generating a second target array based on the secondinfrared image; and generating a calculation model based on the first infrared image, the second infrared image, the first target array and the second target array, and calculating the effective shielding area of the smoke screen to obtain the smoke screen interference efficiency. According to the invention, a computer image processing mode is applied to external field smoke screen interference efficiency evaluation; the calculation model of the smoke screen interference efficiency based on the infrared image is established, accurate evaluation of an external field test target is achieved, andthe method has the advantages of being high in smoke screen interference efficiency evaluation precision, simple and easy to operate, objective, real and comprehensive in smoke screen interference efficiency evaluation and the like.

The invention provides a smoke screen generation system. The smoke screen generation system comprises a smoke generator device; the smoke generator device comprises a smoke generator box body, a box body air inlet is formed in the smoke generator box body, a control panel is embedded in the smoke generator box body, and at least one button is arranged on the control panel; a power device, an injection device, a fuel system, a power source, an electric control module and other components are further contained in the smoke generator box body; and the smoke screen generation system can further comprise an atomized oil system and/or a material agent conveying device and the like so as to supply smoke agent materials to the injection device. The smoke screen generation system is compact in structure and allows portable use.

The invention discloses a horizontal and vertical air supply combined fire escape system capable of realizing a collision effect in a breathing zone and an air supply tunnel. The horizontal and vertical air supply combined fire escape system comprises static-pressure tanks, air supply pipes and smoke screens; the static-pressure tanks are arranged in the wall of the tunnel and are connected with the air supply pipes; first nozzles are arranged at lower ends of the static-pressure tanks, and second nozzles are arranged on side surfaces, which are close to the tunnel, of the static-pressure tanks; each first nozzle discharges air in the horizontal direction, and each second nozzle discharges air in the vertical downward direction; the vertical smoke screens are fixed to side walls, which are close to one side of the tunnel, of the second nozzles; lower edges of the static-pressure tanks are flush with upper edges of the smoke screens, and upper edges of the first nozzles are flush with lower edges of the second nozzles; and the air supply speed of each first nozzle is 0.3m/s, and the air supply speed of each second nozzle is 0.7m/s. The horizontal and vertical air supply combined fire escape system has the advantages that jet flows sprayed by each two corresponding nozzles are collided with each other in the breathing zone for escape personnel, so that a fire escape channel which penetrates the integral tunnel can be formed; and the tunnel excavation volume is obviously reduced, and only the static-pressure tanks need to be arranged at corners of the tunnel.

A smoke screen generator in which the field of view is shut off instantaneously (short time) by emitting smoke without requiring any heater or an accumulator and a sound for intimidation can be generated, in which spreading performance of smoke screen can be enhanced by the number of smoke ejection openings and the angle of smoke ejecting direction, and in which a required quantity of smoke can be emitted in a short time in a limited space. The smoke screen generator comprises an igniter, a smoke emitting agent being fired by the igniter to emit smoke, and a combustion chamber for containing the smoke emitting agent provided with an opening for ejecting gas smoke generated through combustion of the smoke emitting agent to the outside, wherein a member for holding the pressure of gas smoke is provided at the smoke ejection opening.