305 results about "Ignition point" patented technology

The invention discloses a multi-element low-alloying high-speed extrusion flame-retardant magnesium alloy and a preparation method thereof. The alloy comprises the following components in percentage by mass: 0.5 to 2.0 percent of Al, 0.2 to 1.0 percent of Zn, 0.1 to 1.0 percent of Mn, 0.2 to 0.8 percent of Ca, 0.2 to 1.0 percent of heavy rare earth element Y, Er or Gd and the balance of Mg and inevitable impurities. Through the synergistic effect of non-rare earth elements Al, Zn, Mn and Ca and trace heavy rare earth elements, matching of low cost, good mechanical property and flame retardant property is realized. After the alloy is subjected to optimized bipolar homogenization heat treatment, the alloy can be subjected to extrusion production at the extrusion rate of 10-30 m / min. The room-temperature ultimate tensile strength is larger than or equal to 270 MPa, the yield strength is larger than or equal to 240 MPa, the ductility is larger than or equal to 12%, and the ignition point is larger than or equal to 850 DEG C. Important support is provided for propelling the magnesium alloy extrusion material to achieve equipment lightweight and low-carbon manufacturing in the fields of rail transit, aerospace and the like.

The invention provides a flame-retardant magnesium alloy with efficient forming diversification and a preparation method of the flame-retardant magnesium alloy. The flame-retardant magnesium alloy comprises the following components in percentage by mass: 4.0-10.0% of Al, 0.2-1.6% of Ca, 0.01-0.5% of Mn, 0.1-1.5% of RE, less than or equal to 0.05% of inevitable impurities and the balance of Mg, and the added RE is one or any combination of Ce, Sm, La and Sr. The preparation method comprises the following steps: smelting and casting, granulating and pulping, and performing pressure injection molding. According to the preparation method, diversified efficient forming of complex curved surfaces, thin-wall parts, special-shaped components and the like can be achieved through cooperative regulation and control of components, the process and the structure, and the obtained flame-retardant magnesium alloy is compact in structure, has the multi-level structural characteristics including a spherical primary solid phase, a fine solidification secondary phase and a grain boundary net-shaped eutectic phase and meanwhile has good flame retardance and mechanical performance; the ignition point is 750-1200 DEG C, the yield strength is 130-200 MPa, the tensile strength is 230-300 MPa, the ductility is 5-20%, and the aluminum alloy is suitable for industrial production.

The invention relates to the technical field of monitoring or controlling charging stations, in particular to a charging pile safety monitoring method and system, and the method comprises the following steps: 1, a monitoring stage; step 2, primary feedback; 3, a tracing analysis stage: determining a fire point and a fire reason; step 3.1, field condition extraction; step 3.2, fire point analysis: through the acquired on-site video data, based on image feature judgment, when the brightness L of a pixel in an image is greater than Lthresh and the color is within Crange, determining the region where the pixel is located as a suspected flame region F; according to the invention, data is collected in real time in an omnibearing manner through multiple sensors, and accurate and comprehensive monitoring and safety early warning are realized. By means of traceability analysis, fire points and reasons can be rapidly determined, and responsibilities can be defined. Primary feedback gives an alarm in time and assists in judgment, secondary feedback is specifically processed according to a traceability result, a double-feedback mechanism optimizes an emergency process, the user experience is improved, and the operation safety of the charging pile is comprehensively guaranteed.

The invention discloses a lithium ion battery energy storage cabinet with a fire extinguishing function and a use method, and relates to the technical field of new energy battery energy storage, the lithium ion battery energy storage cabinet comprises a cabinet body, and a plurality of battery cabins and independent fire extinguishing agent storage tanks are arranged in the cabinet body. Through a highly integrated'early warning-fire extinguishing-cooling 'triple active safety mechanism, extremely high safety and reliability are achieved, after the fire detection unit gives out an early warning, a fire extinguishing agent is sprayed to an ignition point through a fire extinguishing agent release pipeline and a nozzle, open fire is rapidly extinguished, then the integrated cooling system works, and the fire extinguishing effect is achieved. The high-temperature battery module is continuously cooled through the atomization nozzle, the problem that a lithium ion battery is extremely prone to reburning is efficiently solved, the supercapacitor serves as a standby power source, it is ensured that the whole fire extinguishing system can still obtain instant and reliable emergency power under the extreme condition that a main power source is interrupted, and then the fire risk and secondary damage are reduced; and a solid foundation is provided for large-scale safe application of energy storage of the lithium ion battery.

The invention provides a multi-unmanned aerial vehicle swarm collaborative fire extinguishing planning method for forest early fire, which comprises the following steps: step 1, constructing a multi-unmanned aerial vehicle fire point collaborative search method based on information driving, and enabling unmanned aerial vehicles to carry out fire point search on a possible fire area under the driving of temperature gradient change; 2, on the basis of the ignition point theory and the energy conservation criterion, the critical water flow needed by each fire point is calculated, and a fire extinguishing model is constructed to accurately calculate the fire extinguishing agent load needed by fire extinguishing; and 3, on the basis of the fire extinguishing agent load obtained through calculation, a multi-unmanned aerial vehicle group collaborative fire extinguishing model considering resource limitation is constructed in combination with an emergency bid invitation algorithm. According to the method, the task completion time can be effectively shortened, the response to the fire spreading dynamic characteristics and the efficient integration of the unmanned aerial vehicle resources are realized, the fire extinguishing task completion efficiency under the resource limitation condition is ensured, and the task efficiency and the fire suppression effect are improved.

The invention relates to a box-type transformer substation, in particular to a fireproof box-type transformer substation which comprises a box-type transformer substation body, a connecting frame, a plurality of connecting pipes, a negative-pressure dry powder box, a moving frame, a rotating spray head and the like. The connecting frame is connected to the upper side of the interior of the box-type transformer substation body, and the connecting pipes are evenly connected to the connecting frame at intervals; the upper side of the right part of the box transformer body is provided with a negative pressure dry powder box, the upper side of the interior of the box transformer body is slidably connected with a moving frame, and the moving frame is rotatably connected with two rotating nozzles. After detecting smoke, a detection plate controls a special-shaped motor, so that a moving frame and a rotary spray head move left and right, the moving frame is separated from a stop lever, a sealing plate is opened, dry powder in a negative-pressure dry powder box is sprayed out of the rotary spray head, and the rotary spray head can rotate through rotation of a missing gear, so that the spraying range of the dry powder is enlarged; and the rotary spray head is positioned right above a fire point through the positioning rod to extinguish fire, so that the fire can be extinguished more effectively and quickly, and the fire extinguishing efficiency is improved.

The invention discloses a compound for flue gas deoxidation and a flue gas deoxidation method, and relates to the technical field of flue gas treatment for preventing spontaneous combustion injection of residual coal in a goaf. The compound comprises coal semicoke and a composite metal oxide which are mixed, wherein the composite metal oxide comprises CoO and CuO in a mass ratio of 7: (2.5-3.5); the compound is combusted through a fixed bed, and flue gas generated by combustion is deoxidized; when the coal semicoke is used for catalytic combustion deoxidation, CoO and CuO in a certain proportion are added, so that the oxygen consumption rate is high, the CO generation amount and the CO concentration are low, the ignition point is reduced, and the comprehensive effect is good; the problem that the concentration of O2 and the concentration of CO in the flue gas are too high when the flue gas is injected into an underground goaf is solved.

The invention discloses a coal gangue-based solid fuel which comprises pulverized coal, coal gangue particles, a binder, a combustion improver and a sulfur-fixing agent. After the combustion improver prepared by the method disclosed by the invention is added into the solid fuel, the ignition point of the fuel can be obviously reduced, the flammability index of the fuel is improved, and the combustion performance of the solid fuel is greatly improved.

The invention relates to a high-pressure water mist fire extinguishing device connected with an unmanned aerial vehicle water spraying fire extinguishing device, which is particularly suitable for fire prevention and control in complex spaces such as parking lots. The device comprises an unmanned aerial vehicle body carrying a temperature detection camera and a high-pressure water mist fire extinguishing system, a detachable support is adopted to be connected with a high-pressure water mist spray head, and the spray head is connected with a ground high-pressure device through a multi-layer composite hose (resistant to pressure of 10-15 MPa and resistant to temperature of-40 DEG C to 260 DEG C). The temperature detection camera integrates pitching / horizontal double-axis adjustment and is matched with the fire alarm detection alarm to transmit fire scene data in real time, and the path planning module generates an obstacle avoidance flight path based on the position of an ignition point. A zoning fire extinguishing strategy is originally created, the parking lot is divided into a plurality of sub-areas to configure unmanned aerial vehicle clusters, and automatic identification and directional scheduling of fire sources are achieved. The three-dimensional maneuvering capability of the unmanned aerial vehicle is combined with the high-pressure water mist technology, the passing limitation of a traditional fire fighting truck is broken through, the fire extinguishing efficiency in narrow and small space is remarkably improved, the lightweight design (the weight of a hose is smaller than or equal to 0.8 kg / m) and the corrosion resistance characteristic (pH 2-12 environment adaptation) of the unmanned aerial vehicle are particularly matched with the complex working conditions of multiple obstacles and multiple electrical devices of a parking lot; and an efficient solution is provided for new risks such as new energy automobile charging fire.

The invention discloses a high-toughness flame-retardant magnesium alloy and an extrusion preparation method thereof, and belongs to the technical field of metal materials. The magnesium alloy comprises the following components in percentage by mass: 4.0-8.0% of Gd, 1.5-4.0% of Y, 0.3-0.8% of Zr, 0.1-0.5% of Ca, less than or equal to 0.05% of impurities and the balance of Mg. The preparation method comprises the following steps: after smelting and casting, carrying out multi-stage homogenization heat treatment on a cast ingot; then hot extrusion is conducted, and rapid cooling is conducted immediately at the speed larger than or equal to 50 DEG C / min after extrusion; then carrying out warm finishing deformation at the temperature of 200-350 DEG C; and finally, aging treatment is conducted. Through cooperation of component design and process regulation and control, the average grain size of the alloy is smaller than 5 microns, the room-temperature tensile strength is larger than or equal to 450 MPa, the ductility is larger than or equal to 5%, the ignition point is larger than or equal to 900 DEG C, and the problem that the strength, toughness and flame retardance of the magnesium alloy are difficult to consider is effectively solved.

The present application belongs to the technical field of forest fire research, and specifically discloses a forest fire simulation monitoring method and system. The method divides multiple forest fire simulation areas, determines the area where the ignition point is located as a target area; uses a UAV to carry a Fourier infrared spectrometer to collect spectral images in the target area; compares the spectral images with the spectral bands generated by the combustion of existing combustion products to determine the types of combustion products in the target area; based on the spectral images in the target area and the corresponding combustion product types, a flame spectral radiation model is constructed; multiple forest fire danger levels and the corresponding flame spectral radiation ranges of each forest fire danger level are set in advance, and the flame spectral radiation parameters output by the flame spectral radiation model are compared with all flame spectral radiation ranges to determine the forest fire danger level of the target area. By using the flame spectral radiation model, the present application realizes accurate detection and identification of forest fires.

The utility model discloses an underground garage lithium battery electric automobile fireproof device which comprises a material storage tank, fire extinguishing materials are contained in the material storage tank, an output pipe is connected to the outer side wall of the material storage tank, and a material pump is connected to the output pipe; the spraying pipe group is communicated with the discharging end of the material pump, the spraying pipe group is arranged above the parking space, the end part of the spraying pipe group is connected with a spraying table, and the spraying table is connected with a spraying head and a smoke temperature sensor; the folding film bag is annular and is arranged on the peripheral side of the vehicle, one end of the folding film bag is connected with a feeding pipe, the feeding pipe is connected and communicated with the discharging end of the material pump, the folding film bag is supported in an external material supply state and forms an isolation fence, and a fire extinguishing material sprayed by the spraying head is temporarily stored in the isolation fence and immerses an ignition point; the control console is fixed on one side of the material storage tank and is respectively in electric signal connection with the material pump and the smoke temperature sensor. The fire extinguishing device can avoid fire spreading, effectively extinguish fire and reduce property loss.

The invention discloses an intelligent vehicle fire prevention and control method and system and a storage medium, and belongs to the technical field of vehicle safety, and the method comprises the steps: obtaining a periodic thermodynamic diagram of a target area, receiving the thermodynamic diagram, converting the thermodynamic diagram into a temperature matrix, generating a fire signal of the target area according to the temperature matrix, and sending the fire signal to a server; cutting off a main power supply of the vehicle according to the fire signal, starting an independent power supply module to supply power, and generating an alarm signal corresponding to a fire behavior grade and a first fire extinguishing instruction for starting a fire extinguishing packet closest to an ignition point to extinguish fire for the first time; and if the alarm signal is still received within the preset time after the first fire extinguishing, a second fire extinguishing instruction is started for starting all the fire extinguishing bags around the ignition point to perform second fire extinguishing. According to the invention, information of a target area can be sensed in real time, fire behavior and danger can be found as soon as possible, and intelligent fire prevention and control can be realized through unified management of the main controller.

The invention relates to the technical field of energy processing, and provides a powder alternative fuel system, which comprises a crushing bin; a supporting part is arranged at the bottom of the crushing bin, a mounting frame is arranged on one side of the crushing bin, a crushing bin is arranged on the surface of the mounting frame, two sets of symmetrically-arranged crushing parts are arranged on the inner wall of the crushing bin, and a driving part matched with the crushing parts is arranged on one face of the crushing bin. According to the device, raw materials are thoroughly and homogeneously crushed into fine powder through combination of a double-roller type coarse crusher and a high-speed crusher, a heating pipe and a temperature control system are innovatively integrated in a crushing bin, online drying can be performed according to the humidity of the raw materials, and the fuel heat value is increased. The processed powder fuel is stably and directly conveyed to a combustor in an anti-blocking and anti-backfire mode through a spiral-rotary valve-wind power jet mechanical and pneumatic two-stage closed conveying chain, and full-process automatic and closed operation from raw materials to ignition points is achieved.

The utility model provides a fire suppression device, which comprises a detection unit, a processing unit and an execution unit, and is characterized in that the detection unit at least comprises an infrared temperature sensor, a camera module with a flame recognition function and a laser ranging module, the infrared temperature sensor and the camera module with the flame recognition function are used for detecting flames, the laser ranging module is used for determining an ignition point, and the detection unit sends a detected signal to the processing unit; the processing unit is used for processing the received signal, sending the signal to the laser ranging unit according to a processing result, and sending the signal to the execution unit; and the execution unit is used for receiving the signal and executing fire suppression on the ignition point. The fire suppression device is compact in structure, high in flame detection and positioning accuracy, fast in fire suppression response, low in maintenance cost and high in cost efficiency performance.

The utility model relates to a tunnel noise-reducing and flame-retardant pavement structure, which aims to solve the problems of high noise and poor flame-retardant property of the conventional tunnel pavement. The tunnel noise-reduction and flame-retardant pavement structure sequentially comprises an upper surface layer, a middle surface layer, a lower surface layer, a base layer, a subbase layer, a stress absorption layer and a tunnel inverted arch from top to bottom, thermal spraying type modified asphalt is adopted between the upper surface layer and the middle surface layer to serve as a first bonding layer, and thermal spraying type modified asphalt is adopted between the middle surface layer and the lower surface layer to serve as a second bonding layer. A broken stone sealing layer is adopted between the lower surface layer and the base layer as a third bonding layer; wherein the upper surface layer is made of a macroporous asphalt mixture doped with a flame retardant, the middle surface layer is made of an asphalt mixture of SBS modified asphalt, and the lower surface layer is made of a rubber asphalt mixture. According to the tunnel noise-reducing and flame-retardant pavement structure, the fire retardant is doped in the surface layer, the ignition point of the pavement is improved, and the pavement surface layer adopts the macroporous asphalt mixture, so that the driving noise of the pavement is reduced, and the influence on driving and pedestrians is reduced.

The carbon gasification high-temperature cracking furnace comprises a cracking furnace main body and a gasification furnace main body which are distributed in an up-down stacking mode, a feeding hopper is fixedly installed on the upper surface of the cracking furnace main body, and an ash discharging hopper is fixedly installed on the lower surface of the gasification furnace main body; first sealing plates are rotationally mounted in the lower end of the feeding hopper and the lower end of the cracking furnace main body, the first sealing plates are driven by an external control motor of the device, and a heater for igniting fuel is fixedly mounted on the inner wall of the cracking furnace main body. According to the carbon gasification high-temperature cracking furnace, fuel enters the gasification furnace and then is heated to the ignition point through a heater to be combusted, at the moment, sufficient oxygen is provided for the gasification furnace through a second gas supply pipe, meanwhile, a transmission lead screw in a lifting mechanism rotates, and a second connecting rod is driven to move through a connecting sliding block installed in a penetrating and threaded mode outside the transmission lead screw; and a second connecting rod is used for pushing a supporting plate to move upwards, so that burning flames are closer to the cracking furnace above, and the internal temperature of the cracking furnace is guaranteed.

The invention discloses a fire extinguishing system suitable for a current transformer, which comprises a water source supply module, a first compressed air foam generation module and a lift jet robot configured to be in a mechanical state capable of running, and the water source supply module is configured to supply water to the outside of the first compressed air foam generation module; the first compressed air foam generation module communicates with the elevating jet robot, and a jet path of the elevating jet robot forms a composite jet flow field in a three-dimensional space; the fire monitor assembly is communicated with the second compressed air foam generating module, and the third compressed air foam generating module is communicated with the spraying assembly. The device has the beneficial effects that high-pressure air foam is formed through the compressed air foam generation module, a composite jet flow field is formed through the spray pipe mechanism, oriented and efficient covering and fire suppression are achieved for a space three-dimensional fire source, and wrapping type fire extinguishing of a high-position ignition point of a visual angle blind area of personnel is achieved.

An oven valve provided with an ignition microswitch comprises a valve body, a valve rod, a valve cover, a driving piece, the ignition microswitch and a switch box, the valve cover is provided with a valve rod channel and two supporting columns, and each supporting column comprises an end plate arranged at the end, an end screw hole formed in the end and a body screw hole formed in the body; the switch box is provided with a rear opening and comprises fixed seat plates arranged at the two ends and terminal extending holes; the driving piece comprises a cylindrical part, an inverted-cone-frustum-shaped driving part and a major-arc-shaped hole. The valve rod comprises a circular part and a major-arc-shaped part. The major arc-shaped hole is fixed with the major arc-shaped part, the ignition microswitch is arranged in the switch box, the wiring terminal extends out of the terminal hole, the button extends out of the rear opening, and the screw penetrates through the connecting hole in the fixed seat plate and is screwed with the body screw hole; the driving part is matched with the button. The end plate is arranged, so that the contact area with the oven wall plate is increased, and shaking can be effectively prevented; the ignition microswitch is arranged on the supporting column, the space is fully utilized, and the structure is compact.

The utility model provides a solid acetic acid homogenizing fermentation drum which comprises a fermentation drum body, a feed port, a liquid inlet, a stainless steel pipe, a flange, a heating belt, an electric slip ring, a rack, a motor transmission system and a transmission shaft. Raw materials are conveyed through the left-side pipeline, wine and acetic bacteria are conveyed through the right-side pipeline, and mechanical conveying of the raw materials is achieved; a temperature control device is arranged, so that the temperature of vinegar grains in the fermentation drum can be monitored in real time to determine a fire point; a heating belt is wound on the drum body, and the drum body is wound through an electric slip ring and a heating belt connector, so that the entangling phenomenon can be avoided when the fermentation drum rotates forwards and backwards, and materials in the drum can be heated to reach a proper fermentation temperature; a rack is arranged below the rotary drum, transmission shafts are arranged on the periphery of the rack, and the fermentation rotary drum is positively and negatively rotated through rollers, so that the fermentation uniformity of vinegar grains in the rotary drum is ensured. According to the utility model, the problems of more required equipment and manpower and unstable acetic fermentation in the acetic fermentation stage are solved.

The invention relates to the technical field of fire extinguishing devices, in particular to a heptafluoropropane gas fire extinguishing device and a working method thereof. The fire extinguishing device comprises two gas storage tanks and a gas outlet assembly, heptafluoropropane gas is contained in one gas storage tank, inert gas is contained in the other gas storage tank, the gas outlet assembly comprises a shell, a main gas pipe, an auxiliary gas pipe and a lifting seat, one end of the main gas pipe extends out of the side wall of the shell, the other end of the main gas pipe is communicated with the first gas storage tank, and the auxiliary gas pipe is arranged on one side of the main gas pipe. The second air storage tank is communicated with a flow guide rod, the flow guide rod simultaneously penetrates through the main air pipe and the auxiliary air pipe, a first air outlet is formed in the corresponding position of the auxiliary air pipe, the auxiliary air pipe is rotationally connected with the flow guide rod, and the other end of the auxiliary air pipe is rotationally connected with the lifting seat. The two gas storage tanks are arranged, in the fire extinguishing process, heptafluoropropane gas serves as main fire extinguishing gas, then inert gas surrounds the heptafluoropropane gas to cover an ignition point, the instantaneous diffusion range during heptafluoropropane injection is narrowed, and the ignition point covering speed of the inert gas is increased.

The utility model relates to the field of aerial fog type fire extinguishers, in particular to a high-pressure aerial fog type fire extinguisher, which comprises a storage protection frame and a pressurizing fire extinguishing component for increasing gas, the pressurization fire extinguishing assembly comprises a power detector, an assembly connecting ring, an assembly connecting rod, a heat insulation protection layer, a buckle, a control switch, a working rod, a gas cylinder storage tank, a pressurizer, an assembly clamping ring, a limiting clamping sleeve, an atomizing nozzle, a hose positioning pipe and a release valve. A power detector is arranged at the front end part of the storage protection frame; according to the utility model, the fire extinguishing agent is atomized and sprayed out by utilizing high-pressure gas, the contact area with fire is increased by atomizing the fire extinguishing agent, the fire extinguishing efficiency is improved, and the damage to articles can be reduced because the fire extinguishing agent can quickly reduce the temperature of a fire source and cover a combustion area, so that compared with the traditional pneumatic extinguisher, the product has the advantages of high fire extinguishing speed and high fire extinguishing efficiency. And flammable substances around the ignition point are not ignited under the action of wind power.

The invention relates to the technical field of chemical enterprise hydrogen filling station safety protection equipment, and discloses a chemical enterprise hydrogen filling station safety management protection device which comprises a water tank, a lifting assembly, a driving assembly, a monitoring assembly and a water spraying assembly, the lifting assembly comprises a supporting cylinder, a supporting rod and a locking button, and the supporting cylinder is fixedly connected to the top of the water tank; after hydrogen leakage of a chemical enterprise occurs, large-area water mist can be increased through sound and light, leakage information can be directly transmitted, safety measures can be taken at the same time, the hydrogen ignition point can be reduced, the explosion limit can be reduced, electrostatic conduction can be increased, an initial fire can be effectively and rapidly extinguished, and the device is simple, low in energy consumption and high in practicability. The device is simple in structure and low in cost, can achieve early warning, disposal, ignition point reduction, explosion limit reduction, static electricity conduction increase and extinguish initial fire at the same time, is large in leakage disposal measure and efficient, and can extinguish initial fire generated by hydrogen leakage at the same time.

The present invention provides a micro-intelligent fire extinguishing control system and method, including: a micro-mobile fire extinguishing deformation body subsystem, which forms a micro-mobile fire extinguishing deformation body from fire extinguishing materials through a micro-deformable combined structure, and combines and deforms according to the pore shape at the fire point part to accurately deliver the fire extinguishing materials to the root part of the ignition point; a fire point root sensing and tracking subsystem, which monitors the local temperature distribution at the fire occurrence part through infrared sensing to track the root part of the fire point; a cloud-based rapid fire situation analysis and prediction subsystem, which rapidly analyzes the fire situation at the root part of the fire point and rapidly predicts the fire point spread trend part through a fire situation analysis and prediction cloud platform; a micro-intelligent fire extinguishing deformation control subsystem, which reads the fire situation analysis results at the root of the fire point and the cloud analysis results of the fire point spread trend, and intelligently controls the deformation and movement of the micro-mobile fire extinguishing deformation body to reach the root part of the fire point and the fire point spread trend part, triggers the micro-mobile fire extinguishing deformation body to accurately extinguish the fire, and blocks the fire point spread trend.

The utility model discloses an electric new energy vehicle fire extinguishing mechanism which comprises a battery bin, a bin cover is installed on the battery bin, a fire extinguishing agent storage tank is installed on the outer surface of the bin cover, and a pressure pump communicated with the fire extinguishing agent storage tank is installed in the bin cover. Through the connecting pipes and the sprayers which can be randomly arranged, the mutually matched installation work can be carried out according to the arrangement mode of the battery packs, so that the sprayers are aligned to the positions where thermal runaway is likely to happen, and then fire extinguishing work can be efficiently and quickly carried out on ignition points.

This invention provides an apparatus for oxygen-enriched roasting of lepidolite. The apparatus includes: a roasting furnace; a feed trough disposed on the roasting furnace, with a discharge trough at the bottom of the furnace, the outlet of which is sealed by a sealing plate; and a combustion assembly mounted on the roasting furnace for roasting the lepidolite. The apparatus for oxygen-enriched roasting of lepidolite provided by this invention prepares oxygen-enriched gas and fuel through an oxygen-enriched air preparation assembly, which then enters the roasting furnace for combustion. Because the fuel burns faster and more completely in an oxygen-enriched state, the emission of harmful gases is effectively reduced. The oxygen-enriched gas lowers the fuel's ignition point; under the same natural gas mass and flow rate, a higher oxygen content in the oxygen-enriched air results in a higher flame temperature, significantly improving the utilization rate of thermal energy.

The invention relates to the technical field of fire extinguishing, in particular to a remote jet fire extinguishing device for an unmanned aerial vehicle, comprising a positioning plate mounted at the lowermost part of the unmanned aerial vehicle, a stabilizing frame detachably mounted below the positioning plate, two groups of symmetrically arranged L-shaped plates slidably mounted in the middle of the stabilizing frame, and a U-shaped frame rotatably mounted between each group of L-shaped plates; compared with an existing device, when spraying fire extinguishing is conducted from the high altitude, the spray head is moved to be stably close to the ignition position, so that precise fire extinguishing is achieved, and the situation that the distance between the spray head and the ignition point is too long, the spray head conducts spraying fire extinguishing from the high altitude, and the fire extinguishing efficiency is poor due to the fact that fire extinguishing auxiliaries are prone to being dispersed is effectively avoided; through the arrangement of the powder box and the foam box, foam or powder fire extinguishing agents needed during fire extinguishing can be supplied, so that needed fire extinguishing auxiliaries are selected in a targeted mode according to fire behaviors in different scenes, and the usability of the whole device is wider during high-altitude fire extinguishing.

The utility model relates to an RTO (regenerative thermal oxidizer) for low-ignition-point waste gas treatment, a first heat accumulator layer and a second heat accumulator layer are arranged in a heat accumulation chamber of an RTO body, the first heat accumulator layer and the second heat accumulator layer are arranged at intervals in the longitudinal direction, and the second heat accumulator layer is arranged above the first heat accumulator layer; the air inlet end of the bypass air duct is communicated with the heat storage chamber and located above the first heat storage body layer, the bypass air duct is used for penetrating through the heat storage chamber of the RTO body and the hearth, and the bypass air duct at least crosses one second heat storage body layer. According to the RTO for low-ignition-point waste gas treatment, by arranging the bypass air duct, the overtemperature of the heat storage chamber caused by advanced oxidation of low-ignition-point component VOCs waste gas can be avoided, the spontaneous-combustion low-ignition-point component VOCs waste gas is bypassed and directly enters the hearth, self-sustaining combustion of the hearth is maintained, fuel consumption is reduced, energy consumption is reduced, and the energy consumption is reduced; and the exhaust overtemperature of the RTO outlet during exhaust can be effectively avoided, and the system stability is improved.

The application provides a slow cook-off safety evaluation method of explosive charge based on equivalent model test, comprising the following steps: S1, obtaining the thermodynamic parameters of the explosive charge; S2, determining the equivalent model test method and numerical simulation analysis; S3, slow cook-off numerical simulation analysis of the full-size warhead; S4, reaction grade estimation of the slow cook-off safety of the full-size warhead. The evaluation method of the application designs the model test under the slow cook-off condition of the warhead, combines the numerical simulation to obtain the equivalent wall thickness of the rear end cover of the explosive charge / shell wall thickness, the ignition point temperature and the reaction grade of the explosive charge obtained by the model test, can estimate the reaction grade of the full-size warhead under the slow cook-off condition, and judge the safety. All tests of the evaluation method of the application can be carried out under the laboratory conditions, compared with the full-size live ammunition test research method, has the advantages of low research cost, short cycle, high safety and the like.

The utility model belongs to the technical field of fire extinguishing devices, and particularly relates to a fire extinguishing hook which comprises a rod-shaped body, an inclined surface is arranged at the top end of the rod-shaped body, a pointed end is formed at the top end of the inclined surface, and a barb structure is arranged at the position, close to the top end, of the rod-shaped body. And the barb structure is bent towards one side far away from the tip. The fire extinguishing hook has the advantages of being simple in structure and convenient to use, can be used in cooperation with a fire extinguisher, removes sundry piles while extinguishing fire, assists in conveying a fire extinguishing agent into a small space, and effectively controls the safe distance between a person and the fire and the distance for separating a fire point from combustible materials. For unmovable fire points (such as narrow space and iron sheet wrapping space where the fire extinguishing agent cannot reach easily), the sharp head of the hook rod is accurately broken open, and the fire extinguishing agent is put.