208 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 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 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 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.

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 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 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.

The invention discloses a movable air film cooling device and method for a rail transit tunnel, the device comprises a movable support walking and moving in the tunnel, the movable support comprises a mounting cross beam located at the top, a fire source recognition device is arranged at the lower end of the mounting cross beam, and a jet fan is arranged at the upper end of the mounting cross beam; an air film induction air opening is formed in a jet opening of the jet fan. The method comprises the following steps: receiving a fire alarm signal, and starting position identification; collecting core parameters of a fire source; controlling the moving bracket to move, and adjusting the distance between the moving bracket and the ignition point; starting a jet fan to form a cooling air film; performing temperature monitoring; and based on temperature monitoring, the frequency of the jet fan is adjusted until the fire alarm signal is relieved. The device is compact in structure, rapid in response, accurate in cooling and suitable for the rail transit tunnel, and the structural safety of the tunnel concrete structure under fire high-temperature smoke is remarkably improved.

The utility model discloses an efficient sparking plug shell, which relates to the technical field of sparking plug shells, and comprises a shell, an electrode piece, a sealing mechanism and an extrusion mechanism, the electrode piece is arranged at the bottom end of the shell, the sealing mechanism is arranged on the outer wall of the shell, the extrusion mechanism is arranged on the outer wall of the shell, and the extrusion mechanism is used for meshing after the shell is installed. The electrode piece comprises a plurality of ground electrodes which are arranged at the bottom end of the shell in an annular array mode. According to the utility model, through the plurality of ground electrodes in the electrode piece, the spark plug has a plurality of ignition points during working, so that the ignition efficiency is ensured, and meanwhile, through the cooperation of the extrusion mechanism and the sealing mechanism, the sealing performance during the installation of the spark plug is improved, and gas leakage and looseness in the spark plug are prevented; therefore, the ignition efficiency of the spark plug is improved.

The utility model discloses a ship fire extinguishing control system and a ship. The fire extinguishing system comprises a fire extinguishing robot, the control system further comprises a fire monitoring sensor, a main controller and a wireless communication module. The fire extinguishing robot comprises a robot controller and an airborne communication module; the fire monitoring sensor is arranged at a ship fire monitoring point and used for monitoring fire information, and the output end of the fire monitoring sensor is connected to the main controller; the main controller is connected to an airborne communication module of the fire extinguishing robot through a wireless communication module, and the airborne communication module is connected with a robot controller; and the robot controller drives the fire extinguishing robot to extinguish fire based on a control signal sent by the main controller. The ship fire extinguishing robot has the advantages that fire extinguishing control is carried out on fire points of a ship through the fire extinguishing robot, and the automation degree of ship fire extinguishing is improved.

The utility model provides a heat insulation door panel suitable for a fireproof door, which comprises a door panel structure, the door panel structure comprises a door panel body, a mounting groove is arranged in the door panel body, a connecting hole is arranged on one side of the inner wall of the mounting groove, a connecting pipe is arranged on the outer wall of the door panel body, the connecting pipe is connected with the connecting hole, and the connecting pipe is connected with the door panel body. A positioning flange is arranged at the top of the connecting pipe, and supporting strips are arranged on the two sides of the inner wall of the mounting groove. Water can be guided into the mounting groove through the connecting pipe, then the water pressure in the mounting groove is increased, and the sealing ring is ejected out, so that the sealing ring is separated from the water tank, and then the water is directly discharged through the water tank, so that the water can extinguish fire with an ignition point on one side of the heat insulation door panel of the fireproof door; the flame blocking time of the fireproof door heat insulation door panel is prolonged, the flame grilling time and temperature of the fireproof door heat insulation door panel are reduced, and the flame blocking time of the fireproof door heat insulation door panel is prolonged.

This invention relates to the field of civil defense shelter design. It discloses a civil defense basement with a self-ignition isolation structure for new energy vehicles, aiming to solve the problem of easy fire spread when new energy vehicles spontaneously combust in civil defense basements. It includes an inner frame, a first linear drive mechanism, a second linear drive mechanism, a telescopic isolation canopy, and a flame sensor. The first linear drive mechanism is located in the inner frame, and the second linear drive mechanism is located in the movable part of the first linear drive mechanism. The telescopic isolation canopy is deployed by the second linear drive mechanism. The flame sensor is located in the inner frame and is signal-connected to the two linear drive mechanisms. It can identify the ignition point and trigger the drive mechanisms, causing the telescopic isolation canopy to move to the ignition point and deploy. This structure can accurately isolate spontaneously combusting vehicles, reduce the fire spread range, improve the impact of fire on surrounding vehicles and the basement structure, and enhance the safety of parking new energy vehicles in civil defense basements.

The invention relates to a method for operating an internal combustion engine of a motor vehicle, in which the internal combustion engine has at least one combustion chamber and an intake tract through which air can flow, by means of which the air flowing through the intake stroke can be introduced into the combustion chamber. The internal combustion engine is operated in a first operating mode (step S1), in which a fuel is injected directly into the combustion chamber at a first pressure and a mixture comprising the injected fuel and air is ignited in the combustion chamber by means of spark ignition.Depending on whether it is determined that the temperature of the air in the intake tract exceeds a threshold value and / or that the quality of the fuel falls below a limit value and / or that at least one irregular combustion has taken place in the combustion chamber in the first operating mode, the internal combustion engine is operated in a second operating mode (step S3).

The precombustion chamber device comprises a device body, an injection cavity is formed in the device body, a partition plate is arranged in the injection cavity and divides the injection cavity into a first cavity body and a second cavity body, a first injection hole communicating with the first cavity body and the second cavity body is formed in the partition plate, and a second injection hole communicating with the first cavity body and the second cavity body is formed in the partition plate; the device body is provided with a second spraying hole communicating with the second cavity and leading to the outside of the device body. The sparking plug is arranged on the device main body, the sparking plug is provided with an ignition end used for ignition, and the ignition end of the sparking plug is located in the first cavity; the methanol sprayer is arranged on the device main body, the methanol sprayer is provided with a spraying end for spraying methanol, and the spraying end of the methanol sprayer leads to the first chamber. According to the pre-combustion chamber device, the speed of the formed jet flow can be increased, so that the penetrating power of the jet flow is enhanced, a plurality of ignition points can be stably formed in the main combustion chamber of the methanol engine, and the lean combustion limit can be further expanded.

The application provides a deep network-based MSWI process ignition point temperature control method, which comprises the following steps: taking a key manipulated variable as an input and an ignition point temperature as an output, establishing an ignition point temperature controlled model by using a linear regression decision tree with interpretability, and simulating and predicting the ignition point temperature in an actual combustion system; calculating an error between a predicted value of the ignition point temperature and a set value, taking the error and an error change as inputs, using an LSTM controller to extract time sequence characteristics of the error information, and outputting a corrected feeding speed, so that the ignition point temperature output by the model can track the set value; meanwhile, each gate weight and a bias parameter of the LSTM controller are adaptively updated by introducing Lyapunov stability constraints, so that stable calculation of a control increment of the feeding speed is realized at each sampling time. The method can ensure stable adjustment of the ignition point temperature without an accurate system model.

This invention discloses a method and system for detecting fires in power tunnels based on matrix infrared thermometry. The method includes: real-time acquisition of the temperature, ambient temperature, and flame temperature at each point on the matrix thermometry detection surface of the power tunnel; initial determination of the presence of ignition points or potential ignition points in the detection area based on temperature difference and unit time temperature rise rules, and determination of the location and area of ​​the ignition points or potential ignition points; secondary confirmation of the initially determined ignition points or potential ignition points based on adjacent matrix thermometry comparison rules in the direction of movement and fire detection rules; if the secondary confirmation result is correct, determining the spray direction and spray volume of extinguishing agent based on the location and area of ​​the ignition point or potential ignition point, and extinguishing the fire; otherwise, continuing detection. This invention uses a matrix infrared thermometry sensor and, through optimized temperature measurement and detection algorithms, achieves more accurate fire detection in power tunnels.

The application discloses a high-ignition-point high-thermal-conductivity mineral insulating oil and a preparation method thereof, and belongs to the technical field of insulating oil preparation, and is used for solving the technical problem that the ignition point and the thermal conductivity of the mineral insulating oil in the prior art need to be further improved, and specifically comprises the following raw material components in parts by weight: 80-90 parts of modified mineral base oil and 5-6 parts of an insulating thermal conductor, in the application, a flame-retardant modifier is first synthesized, then free radical initiation is adopted to graft glycidyl methacrylate and the flame-retardant modifier to liquid paraffin to prepare modified mineral base oil containing an epoxy group; subsequently, modified nitrogenized modified graphene oxide is prepared by using the prepared modified nitrogenized modified graphene oxide, modified graphene is obtained, the modified graphene and epoxidized soybean oil are crosslinked under catalysis of triethylamine to generate modified soybean oil, and an insulating thermal conductor is prepared by introducing a perfluoro group, and finally, the modified mineral insulating oil is synthesized by reacting the components at high temperature.

The invention discloses a safety protection type power distribution cabinet, relates to the technical field of power distribution cabinets, and provides the following scheme that the safety protection type power distribution cabinet comprises a cabinet body, a fan moving up and down is connected to one side in the cabinet body, a sliding cylinder is installed on one side in the cabinet body, a piston block is slidably connected to the interior of the sliding cylinder, and a communicated whistle is installed on the side wall of the bottom of the sliding cylinder; a plurality of guide wheels are installed on the fixed frame, a pull rope is wound on the guide wheels, a sliding plate moving up and down is connected to the cabinet body, a fire extinguishing tank is installed on the sliding plate, and a first memory spring and a second memory spring are connected to the cross rod; the fan is driven to move up and down, blowing to a high-temperature area is facilitated, high temperature is transmitted to the first memory spring in the area, the abutting block extends out, the sliding plate impacts the extending abutting block, so that a sound is made, when a fire occurs, the second memory spring pushes the push block to limit movement of the sliding plate, the sliding plate is aligned with an ignition point, and when the fire occurs, the pull rope is burnt out; and the piston block moves downwards to blow to the whistle.