32 results about "Colored smoke" patented technology

The invention discloses a fan vortex-induced wake flow visualization test method and device based on an optical flow method theory, and the method comprises the steps: arranging at least three wireless smoke sprayers along the wall of a fan tower at different heights; acquiring colored smoke spraying images of the wireless smoke sprayers at different heights under various wind conditions by using image acquisition equipment, and synchronously acquiring unit state information at corresponding moments and elevation angle and focal length parameters of the image acquisition equipment; a vortex-induced wake flow visualization model is constructed; constructing a vortex-induced wake flow characteristic model based on an optical flow method; and utilizing the vortex-induced wake flow characteristic model to obtain the wake flow condition when the fan is subjected to vortex-induced. According to the method, colored smoke spraying images of wireless smoke sprayers at different heights under various wind conditions are obtained, a vortex-induced wake flow visual model is generated according to the images, the vortex-induced wake flow visual model is analyzed on the basis of an optical flow method, and a vortex-induced wake flow characteristic model is established, so that the wake flow condition during vortex excitation of the fan is conveniently obtained.

The utility model relates to the technical field of fire-fighting equipment detection, and discloses a gas tightness testing device for gas fire extinguishing equipment, which comprises a gas tightness detector and a supporting plate, the top end of the gas tightness detector is provided with a colored smoke generator, and the right end of the gas tightness detector is communicated with a guide pipe. According to the utility model, the colored smoke producer is arranged at the top end of the air tightness detector, so that colored smoke can be produced and injected into the fire extinguishing equipment body through pressurization of the guide pipe, and the leakage position is detected by observing the escape point of smoke, so that the leakage point can be quickly found; the situation that a detector cannot accurately judge leakage points of the fire extinguishing equipment body due to the refraction effect of water can be avoided, meanwhile, the fire extinguishing equipment body can be fixed through an adjusting lead screw, and therefore the detector does not need to steadily hold the fire extinguishing equipment body with hands; and the situation that a detector is possibly injured when pressurized gas injection is carried out on the fire extinguishing equipment body is avoided.

The application provides a simulation teaching device for wing stall phenomenon applied to the field of fluid mechanics teaching, which can assist students to more intuitively understand the air flow state of the wing surface by simulating the air flow phenomenon with or without a real object under normal flight state and the air flow phenomenon with or without a real object under stall state, and can intuitively observe the colored smoke flow state under the normal flight and stall state in the simulation without a real object, and can make the students further understand the difference between the air flow speed and direction under the two conditions by the different real object reflections made by the wind measuring piece under the normal air flow and the separated air flow in the simulation with a real object, so that the students can effectively understand the principle of the aircraft lift and the stall state through the simulation comparison of multiple groups of different conditions, and the teaching effect is greatly improved.

The invention is suitable for the technical field of tail gas treatment, and particularly relates to a tail gas dust falling and white smoke eliminating comprehensive deep treatment system which comprises a dust falling subsystem and a white smoke eliminating subsystem, the dust falling subsystem comprises a washing tower, and a tempering reactor is arranged at the bottom of an inner cavity of the washing tower; a special-shaped demister is arranged at the position, located above the tempering reactor, in the washing tower, a water collector is arranged above the special-shaped demister, a three-stage ridge demister is arranged above the water collector, the washing tower is connected with a white smoke elimination subsystem, and the white smoke elimination subsystem condenses, defogs and heats tail gas from the washing tower to eliminate the tail gas in the tail gas. The treated tail gas is discharged from the top of the washing tower. The device integrates the characteristics of a heating technology and a condensation technology, is slightly influenced and restricted by external conditions such as environment temperature and relative humidity, is wide in application range and relatively low in cost, and gives consideration to elimination of sensory pollution of colored smoke plume and guarantee of thermal lifting and diffusion effects of pollutants on the premise of guaranteeing a certain pollutant emission reduction effect.

The utility model discloses a quality detection instrument for a pressure vessel finished product. The quality detection instrument comprises a pressure vessel body, an air inlet, a movable frame and universal wheels, by arranging the air pump, the air outlet pipe, the smoke inlet pipe, the smoke generating mechanism and the winding mechanism, colored smoke is generated through the smoke generating mechanism, gas generated by the air pump is transmitted into the smoke generating mechanism through the air outlet pipe, and then the smoke generated by the smoke generating mechanism is transmitted into the pressure container body through the smoke inlet pipe. And then an operator observes whether smoke leaks on the surface of the pressure vessel body or not so as to complete sealing detection of the pressure vessel body, the mode is convenient to operate, the detection convenience of the operator is improved, and the problems that the detection process is slow and the working efficiency is influenced when some large vessels are detected, and water immersion is adopted for detection, so that the working efficiency is influenced are solved. And when a container with unqualified sealing performance is repaired subsequently, great difficulty is caused, and certain limitation is caused.

This utility model relates to the technical field of riot control ammunition, specifically a hand-thrown incendiary colored smoke grenade. It includes a casing containing several evenly distributed smoke column fixing chambers, each chamber containing a colored smoke column. The casing also contains propellant tablets that contact the colored smoke columns for ignition. A propellant strip for igniting the propellant tablets is also present within the casing. An ignition mechanism adjacent to the propellant strip is also provided on the casing. This ignition mechanism includes a delayed ignition tube for firing the propellant strip. The delayed ignition tube in the ignition mechanism can be precisely fired, igniting the propellant strip. The propellant strip then transfers the flame to black powder tablets made from a mixture of potassium nitrate, sulfur, and charcoal, ultimately igniting the colored smoke column. The entire ignition process is orderly and efficient, ensuring reliable ignition of the colored smoke grenade when needed. Smoke colors: red, yellow, green, and white. Having four smoke colors allows for the transmission of more signals on the battlefield.

The invention discloses a color smoke generating agent containing a nanometer material, and belongs to the technical field of pyrotechnic compositions, and the color smoke generating agent comprises the following components by weight: 25-40% of an oxidizing agent; 20%-30% of a reducing agent; 25%-40% of an organic dye; 2%-10% of a nanoscale functional additive; the nanoscale functional additive can be selected from one or a mixture of any two or more of nanoscale silicon dioxide (SiO2), nanoscale aluminum oxide (Al2O3) and nanoscale perlite powder. The invention is used for solving the problems of low smoke generation speed, small smoke column diameter and unsaturated smoke color of the existing colored smoke generation agent.

1. The name of this design product: Fireworks packaging box (colored smoke wall). 2. Purpose of this design product: a packaging box for fireworks. 3. The key design point of this design product lies in the combination of shape and pattern. 4. The picture or photo that best illustrates the design points: three-dimensional picture. 5. The rear view is the same as the main view, so the rear view is omitted; the left view is the same as the right view, so the left view is omitted; the bottom surface of the product of this design is a part that is not easy to see or cannot be seen when in use, so the top view is omitted.

The utility model discloses a wet desulfurization process surface type water-saving flue gas waste heat power generation system, which belongs to the technical field of energy conservation and environmental protection and comprises a desulfurization tower communicated with an inlet flue and an outlet flue. The raw flue gas heat removal system is arranged in the inlet flue and is used for obtaining heat of the high-temperature raw flue gas in the inlet flue and reducing the temperature of the high-temperature raw flue gas entering the desulfurization tower; the heat obtained from the raw flue gas heat extraction system is used for generating power for the screw machine power generation system; the flue gas condensation system comprises a low-temperature section heat exchanger fixedly connected to the outlet flue, the outlet flue is communicated with a flue gas channel in the low-temperature section heat exchanger, and the bottom end of the flue gas channel in the low-temperature section heat exchanger is communicated with a condensate water storage tank. The flue gas waste heat can be utilized for power generation, and flue gas heat energy is converted into electric energy to generate economic benefits; meanwhile, moisture in the flue gas at the outlet of the desulfurizing tower can be extracted, the problem of excessive water consumption of enterprises is solved, and the colored smoke plume phenomenon is reduced.

This invention provides an air explosion device, comprising an explosive body, which is a hollow cylinder with an explosion port at the top. Protruding rings are fixed to the inner walls of the top and bottom of the explosive body. A sliding shaft assembly is installed inside the explosive body, and a central shaft assembly is enclosed within the sliding shaft assembly. A tail plate is fixed to the top of the central shaft assembly, and the bottom of the central shaft assembly is fixed to the bottom of the explosive body. The explosive body, central shaft assembly, tail plate, and sliding shaft assembly together form an air chamber structure. Compared to existing technologies, the explosive body can store compressed air, which can be released instantaneously through the movement of the sliding shaft, generating an explosion sound and shock wave. It can be used as a bird deterrent, a salute cannon, a seismic air gun, a blockage clearer, a blasting device, a drum, or other products that use compressed air to generate an explosion sound or impact force. It is not only safe and environmentally friendly but also more effective. Colored paper, water, or colored smoke can also be added inside the explosive cylinder to enhance the effect.

The invention provides a smoke concentration estimation method based on long and short distance feature fusion, and the method comprises the steps: inputting a color smoke synthesis image into a content extraction module, and carrying out the coding through combining with a lightweight network, thereby obtaining the basic features of smoke; inputting the basic characteristics of the smoke into an information decoder for decoding to obtain smoke concentration graphs of different levels; processing the smoke concentration map of the current layer to obtain a smoke fine concentration map; performing reconstruction operation on the smoke fine concentration diagram, and fusing the smoke fine concentration diagram with the smoke fine concentration diagram to obtain a finally output credible concentration diagram; according to the method, the position of the smoke pixel is calculated from the color smoke monitoring image, the concentration is inferred, and a more reliable judgment clue is expected to be provided for early fire early warning, fire behavior prediction and even rough classification of comburent.

The utility model provides a low-temperature multi-effect seawater desalination vacuum leakage detection system. The system comprises a booster pump, a volatilization device and an extraction valve, the booster pump is sequentially connected with the pressurizing ejector and the pressurizing valve; the pressurizing ejector is externally connected with a volatilization device; the pressure increasing valve is connected with a plurality of effect body evaporators through vacuum connecting pipelines; the extraction valve is connected with the multiple effect body evaporators at the same time. The multiple effect body evaporators are each provided with an isolation partition valve. The volatilization device is filled with colored smoke. According to the low-temperature multi-effect seawater desalination vacuum leakage detection system provided by the invention, the system can be subjected to vacuum leakage detection treatment more conveniently, accurately and efficiently, leakage points can be quickly searched and eliminated in a temporary hot standby state of the seawater desalination system, and the situation that the system cannot be in a standby state due to long-time shutdown guide is avoided.

The invention relates to the technical field of down jacket performance detection, and provides a down jacket air permeability detection device and method.The down jacket air permeability detection device comprises a detection box, the interior of the detection box is divided into a first cavity and a second cavity, and a lofting assembly is arranged between the first cavity and the second cavity. Any one of the first cavity and the second cavity is filled with colored smoke, the other one of the first cavity and the second cavity is filled with air, and the internal air pressure of the first cavity and the internal air pressure of the second cavity are standard atmospheric pressure; the air permeability of the tested down jacket is evaluated by observing the color change of gas in the first cavity and the second cavity, the air permeability is in positive correlation with the color change degree of the gas in the two cavities, and the air pressure condition of the tested down jacket in actual wearing is truly simulated, so that the air permeability of the tested down jacket in actual wearing is accurately and truly reflected.

The application discloses an unmanned ship for offshore illegal ship monitoring and driving away, which comprises a fish-fin-like monitoring device on the top of the ship body, a tail smoke outlet, a main suction cup on the bottom of the ship body, a suction cup mechanical arm and a flexible net launching device; the front end face of the fish-fin-like monitoring device is provided with an infrared camera and a light emitter, and the rear end face is provided with a rearview camera; the tail smoke outlet can discharge colored smoke into the air; the suction cup mechanical arm comprises a mechanical arm and a suction cup impact device, the suction cup impact device can be adsorbed on the target ship body and drive the impact pin to impact the target ship body; and the flexible net launching device is used for launching the flexible net to the propeller of the target ship. Through the integration of the fish-fin-like monitoring device, the multi-dimensional interference system, the mechanical adsorption structure and the flexible net launching device, the application realizes the whole-process monitoring, step-by-step interference and forced stopping of the offshore illegal ship, and the unmanned ship has the characteristics of high mobility, strong adaptability and multi-functional integration, and can efficiently work under complex sea conditions.

1. Name of the product in this design: Colored Smoke Machine. 2. Purpose of this design: To create smoke columns and enhance stage effects. 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. 5. The bottom surface of this product is a part that is not easily seen or cannot be seen during use, so the bottom view is omitted.

The invention relates to the technical field of electronic cigarettes, in particular to a preparation method of colored smoke of an electronic cigarette and the electronic cigarette, the preparation method adopts a two-way independent atomization and microcapsule hydrophilic trigger color development scheme, and the preparation method sequentially comprises the four steps of basic smoke generation, coloring agent suspension atomization, aerial fog mixing and color development forming. The food-grade microcapsule pigment is combined with the moisture absorption characteristics of glycerol and propylene glycol, so that the surface of the smoke microdroplet is accurately colored; the corresponding electronic cigarette adopts a modular structure, is provided with an independent basic atomization unit and a coloring agent unit, and is matched with a coloring atomization module, a detachable shell and an oil injection structure, so that 0.1 mg-5mg controlled quantity, multi-color switching and convenient oil injection are realized; according to the invention, the pigment is only attached to the surface of the smoke droplet, is not dissolved in tobacco tar, has safety, color development stability, environmental friendliness and convenience in use, is suitable for entertainment type and social type electronic cigarette products, and has remarkable industrial application value and market prospect.

The invention discloses a smoke firework suitable for being set off at night, a plurality of launching outer barrels form a white flash barrel row and a colored smoke barrel row respectively, the white flash barrel row and the colored smoke barrel row which are arranged in parallel front and back form a set-off unit, and the smoke firework comprises at least one set-off unit; the model of smoke emitted after the inner cylinder lifts off and explodes is achieved; the height ratio M: N of the emitting outer cylinder of the white flash cylinder row to the emitting outer cylinder of the color smoke cylinder row is equal to (25-35) cm: (20-30) cm, and the time ratio X: Y of lead delay of a fire passing lead is equal to (68-72) S: (33-37) S; the charge ratio of the propellant powder A to the propellant powder B is (5-7) g: (3-5) g; the effect drug of the colored smoke tube smoke exhauster takes a colored smoke agent as a core, and the core is wrapped with an outer drug; and a specific white flash medicine and a color smoke medicine formula are matched. The smoke fireworks can accurately control the fire receiving combustion and explosion timing matching and the fire explosion point elevation matching of the white flash tube row and the colored smoke tube row, and can reliably realize the white flash lighting without influencing the smoke modeling of the colored smoke below, so that the smoke fireworks are suitable for being set off at night.

The utility model relates to a high-altitude throwing type smoke identification teaching aid which comprises a fuming consumable, the fuming consumable is provided with a teaching aid main body, the teaching aid main body is a square plate body, the teaching aid main body is provided with a first installation groove, a second installation groove and a third installation groove, a battery is installed in the first installation groove, the fuming consumable is installed in the second installation groove, and the third installation groove is provided with a third installation groove. An ignition device is mounted in the third mounting groove; the battery is provided with a wire, the other side of the wire is connected with an ignition device to form a loop, and the wire is further connected with a power switch in series. And an insulating patch is also arranged between the battery and the lead. According to the utility model, the teaching aid main body is used for loading the fuming consumables, after the unmanned aerial vehicle is thrown, the ignition device loop is connected to ignite the fuming consumables, and the fuming consumables generate colored smoke.

The invention discloses an energy storage battery module, and relates to the technical field of battery modules, the energy storage battery module comprises a main shell, and the top of the main shell is provided with a packaging cover. According to the energy storage battery module, an effective constant-temperature environment and safe operation guarantee can be provided, direct bursting or explosion caused by abnormity in the battery module is avoided, the safety and the high-voltage-resistant quality of the battery module are improved, and when abnormities occur in the battery module suddenly, the color smoke is sprayed from the side of the main shell, so that the safety of the battery module is improved. According to the battery module, the inside of the battery module is warned to a user in advance through the ejection and diffusion colored smoke bomb, the user is reminded in advance to escape from danger emergently, the abnormal change process of the battery module is delayed, the overall explosion-proof strength of the battery module is greatly improved, open fire and high temperature can be isolated, and the safety of the battery module is improved. The safety and the explosion-proof performance of the battery model are improved, the interior of the main shell is kept dry and not humid, and the situation that the battery cannot be used or is short-circuited due to damp is avoided.

The invention belongs to the technical field of hose flange leakage prevention, and particularly relates to a spiral hose with a leakage detection structure. The spiral hose comprises a spiral hose body and a flange plate, and the flange plate is sleeved with a warning gas storage assembly; the warning gas storage assembly comprises an upper annular cavity, a lower annular cavity, a connecting disc, a fixed plate, a driven plate, a gas inlet cavity, a gas storage cavity, a mist discharging cavity, a connecting rod, a driving plate, a gas storage bag and a corrugated pipe. When gas leaks, leaked corrosive gas enters an upper ring cavity, the gas firstly pushes a driving plate in a gas inlet cavity to move, and the driving plate extrudes a gas storage bag in a mist discharging cavity through a driven plate, so that colored smoke in the gas storage bag is discharged; at the moment, the worker can directly locate the gas leakage position at the gathering position of the spiral pipe body according to the position of the colored smoke, and meanwhile, nearby non-workers are warned to evacuate; along with the movement of the driving plate, negative pressure is formed in the gas storage cavity, and leaked gas in the gas inlet cavity is sucked into the gas storage cavity through pressure difference and stored.

The invention relates to a worm wheel blade surface film hole optimization structure and a detection tool and method thereof. The structure comprises a fixing seat and a blade body, an air inlet is formed in one side of the fixing seat, and a connecting tenon is arranged at the bottom of the fixing seat; one side of the blade main body is a concave pressure-bearing side surface, the other side of the blade main body is a convex back-pressure side surface, and a plurality of groups of air film holes are formed in the pressure-bearing side surface and face the tail edge of the blade main body; a cavity is formed in the blade main body, a plurality of supporting rib plates are arranged in the cavity to divide the cavity into a plurality of flow passing channels, each group of air film holes are correspondingly communicated with the flow passing channels, and each flow passing channel is communicated with the air inlet hole; blade top partition plates are fixedly arranged at the tops of the supporting rib plates. The detection tool comprises a turbine disc, a front fixing ring, a front baffle ring, a rear fixing ring, a rear baffle ring, a mounting shaft and the like, colored smoke is input into a main gas channel in the mounting shaft, the flowing state of gas on the surface of a blade is observed, and quality classification is conducted on products. The blade cooling efficiency is improved, and the service life is prolonged.

This invention belongs to the field of fire-fighting equipment technology, and provides a portable high-temperature early warning device and method, including a heat-conducting module, an activation reaction module, and an alarm module. The activation reaction module includes a trigger reaction area, a tube body, and a porous ceramic layer. The alarm module includes a color-developing area and a smoke-generating agent filling area. When the temperature of the monitored item, equipment, or facility reaches the temperature threshold of the early warning device, the hot melt adhesive melts, and reagents C and D undergo a chemical reaction to generate a large amount of gas. The generated gas causes the color-developing agent to change color, providing a color change warning. A specific sound is emitted when the airflow passes through the honeycomb tube, providing an audible warning. When the gas volume reaches a certain level, it breaks through the sealing membrane and carries the smoke-generating agent to the smoke outlet, forming a miniature colored smoke column, providing a smoke warning. This invention can provide high-temperature early warning for electrical equipment and facilities within a temperature range of 70-160℃, giving users sufficient time for hazard handling and emergency escape.

The invention relates to the technical field of workpiece quality inspection, and discloses a metal additive machining workpiece quality inspection device which comprises a quality inspection table, a left arc cover and a right arc cover are fixedly installed at the top of the quality inspection table, a supporting assembly is arranged between the left arc cover and the right arc cover, and a transferring assembly is rotationally connected to the outer side of the supporting assembly. A clamping assembly is arranged between the top end of the left arc cover and the top end of the right arc cover. The top of the left arc cover and the top of the right arc cover are fixedly provided with a detection assembly. If a gap is formed in the surface of the pipe fitting, when the laser scans through the gap in the rotating process of the pipe fitting, the linear laser is distorted and deformed; when a through hole is formed in the pipe fitting, colored smoke in the pipe fitting is sprayed out from the hole, and when the smoke penetrates through a laser irradiation path, a light band which is more convenient to observe appears through the Tyndall effect; therefore, when pores appear in the pipe fitting, obvious characteristics appear, and the purpose of stable and reliable detection results is achieved.

The utility model relates to a handheld firework signal emitter and a firework bomb. A handheld firework signal emitter comprises a handle and a firework shell imbedding cylinder, the handle and the firework shell imbedding cylinder are integrally connected, and a firework shell emission ignition control switch is arranged on the handle; the inner diameter of the firework shell placing barrel is matched with the outer diameter of the firework shell, a conducting strip a and a conducting strip b are arranged on the inner wall of the firework shell placing barrel at a certain interval, and the conducting strip a and the conducting strip b are electrically connected with the positive electrode and the negative electrode of a battery in the battery bin respectively and connected with an ignition control switch through wires. According to the firework bomb, a colored smoke firework bomb with a built-in electronic ignition head is used, and two connectors of a leading-out wire connected with the electronic ignition head are wound and fixed to the outer circumference of the firework bomb through conductive adhesive tape. And the annular electric conductor formed by the two conductive adhesive tapes is respectively and correspondingly contacted with the conductive sheet a and the conductive sheet b on the inner wall of the firework shell imbedding cylinder and forms effective electric connection with the conductive sheet a and the conductive sheet b.

A pneumatic smoke injection device for identifying an air leak in a tire includes a housing that has an air inlet which can be coupled to a supply hose of source of compressed air. An air hose is coupled to and extends away from the housing. The air hose has an air coupler that can be attached to a valve stem of a vehicle tire to direct to compressed air into the vehicle tire when the air coupler is attached to the valve stem. A smoke unit is integrated into the housing and the smoke unit produces a brightly colored smoke when the smoke unit is turned on. The smoke unit releases the brightly colored smoke into the air hose thereby facilitating an air leak in the vehicle tire be visually identified by the brightly colored smoke flowing outwardly from the air leak.

The invention discloses a demister for deacidifying colored smoke plumes, relates to the technical field of demisters, and solves the technical problems that the surface of a corrugated plate in the demister is possibly scaled to cause blockage and influence smoke circulation. Comprising a demister corrugated plate, and a plurality of beam frames are arranged on the upper surface and the lower surface of the demister corrugated plate; the scale cleaning mechanism is mounted at the top of the corrugated plate of the demister, is used for cleaning scale on the surface of the corrugated plate of the demister, and comprises a rectangular frame positioned above the corrugated plate of the demister; normal liquid removal work of the demister on flue gas is not affected, scaling attached to the surface of the corrugated plate of the demister can be scraped at any time, the trouble of manual regular maintenance is reduced, meanwhile, liquid drops on the surface of the corrugated plate of the demister can be gathered together and conveniently and rapidly drop, the position of the surface of the corrugated plate of the demister is vacated, and the demister is prevented from being damaged. The corrugated plate of the demister is convenient to contact with new flue gas to remove liquid, and the liquid removal efficiency of the liquid in the flue gas is improved.

This invention relates to an optimized structure for film cooling holes on the surface of a worm gear blade, along with its testing fixture and method. The structure includes a fixed base and a blade body. The fixed base has an air inlet on one side and a connecting tenon at the bottom. One side of the blade body is a concave pressure-bearing side, and the other side is a convex back-pressure side. Several sets of film cooling holes are formed on the pressure-bearing side, all facing the trailing edge of the blade body. The blade body has an internal cavity with several supporting ribs that divide the cavity into several flow channels. Each set of film cooling holes is connected to a corresponding flow channel, and each flow channel is connected to the air inlet. A blade tip baffle is fixedly installed on the top of the supporting ribs. The testing fixture of this invention includes components such as a turbine disk, a front fixing ring, a front retaining ring, a rear fixing ring, a rear retaining ring, and a mounting shaft. By inputting colored smoke into the main air passage on the mounting shaft, the flow state of the gas on the blade surface is observed, and the product is classified according to quality. This invention improves the blade cooling efficiency and service life.

The present invention proposes a smoke density estimation method by fusing long- and short-range features, the method comprising: inputting a color smoke composite image into a content extraction module and encoding it in combination with a lightweight network to obtain basic features of the smoke; inputting the basic features of the smoke into an information decoder for decoding to obtain smoke density maps of different levels; processing the smoke density map of the current layer to obtain a fine smoke density map; reconstructing the fine smoke density map and fusing it with the fine smoke density map to obtain a credible density map as the final output; the present invention calculates the position of smoke pixels from the color smoke monitoring image and infers the concentration, which is expected to provide more credible judgment clues for early fire warning, fire prediction and even rough classification of combustible materials.

The present invention relates to the technical field of environmental protection devices, and in particular to a device for eliminating colored plumes by electrostatic drive using space charge injection, comprising a mist generating chamber, a water droplet catching chamber, a variable frequency fan, a turbulent fan, a water droplet collecting net, an ion emitter and a water collecting pump; the mist generating chamber and the water droplet catching chamber are connected, the mist generating chamber is provided with a smoke inlet and an ambient air inlet, the variable frequency fan is installed in the ambient air inlet, and the fan blades of the turbulent fan are located in the mist generating chamber; the water droplet catching chamber is provided with multiple levels of the water droplet collecting net and the ion emitter; the water collecting pump is connected to the bottom of the mist generating chamber and the water droplet catching chamber respectively through pipelines. The device realizes the treatment of colored plumes at a relatively low initial investment and operating cost. The system to which the present invention relates does not have a large heat exchanger or heater, which can greatly reduce costs.

The invention discloses fire-fighting spraying water pipe water permeability detection equipment which comprises a detection box, conveying grooves are formed in the upper portions of the two sides of the detection box, an installation support is fixed to the middle of the left side of the detection box, the support is located below the conveying groove in the left side, and a water conveying valve is arranged in the middle of the top end of the detection box. Smoke with a coloring agent is used for detection, in a smoke generator, atomized oil is heated by an electric heating pipe to generate colored smoke, after the smoke is pumped into a water conveying pipeline, if a leakage point exists in the pipeline, the colored smoke can overflow from the leakage point, and compared with colorless and transparent water in traditional water injection detection, the colored smoke can be detected more clearly. The colored smoke can be found more easily.