77 results about "Spontaneous combustion" patented technology

The utility model relates to mechanical engineering technical field field discloses a fireproof cable bridge, including base, the inner wall of base is equipped with two installation grooves, the inner wall of two installation grooves is provided with temperature sensing element, the outer wall of temperature sensing element is fixedly connected with baffle, the inner wall of base is equipped with two storage tank, the outer wall of base is equipped with a plurality of fixed slots, the outer wall of base is installed for the connecting device of connection. In the utility model, when the fire needs to be extinguished and fire -retardant, after temperature sensing element senses high temperature, internal thermal expansion liquid expands rapidly and breaks its outer wall, makes baffle fall down and slides out of storage tank along installation groove, makes the fire -retardant material in the groove slide into base and cover cable. If the cable is spontaneous combustion, the fire -retardant material insulates oxygen and extinguishes the fire, forms the protective layer when the outside is on fire and protects the cable, and the structure is simple and reliable, relies on thermal expansion physical principle and mechanical structure linkage, reduces the failure risk.

This utility model provides an automatic dispensing device for lighters or matches via barcode scanning, belonging to the field of intelligent devices. It includes a rear compartment with a bar slot for storing items. A material-dispensing rod is located at the outlet of the bar slot. One end of the rod is connected to the spindle of a servo motor, and the other end is equipped with a sensor detection plate. A material-dispensing piece is positioned on the rod corresponding to the outlet of the bar slot. A channel allowing the material-dispensing piece to pass through is provided at a limiting baffle. A discharge port is located between the limiting baffle and the bar slot. This device is primarily designed for the automatic dispensing of lighters or matches. It uses an iron casing to effectively prevent damage from external forces and to prevent fires caused by ignition sources. It has fireproofing properties to avoid fires caused by spontaneous combustion. The internal motor drives the material-dispensing rod and piece to rotate via barcode scanning, removing the lighter or matchbox from its designated bar slot. Each scan drives the motor to rotate once, dispensing one lighter at a time. The device has a simple structure and good reliability and stability.

The present application provides a kind of inner slag discharging device and its slag discharging method, it includes high wear-resistant obturator, drill bit drill rod device, venturi water and drill slag dry-wet separator, the drill bit drill rod device is located in high wear-resistant obturator, drill slag dry-wet separator is connected with drill bit drill rod device by venturi water.The flow direction of drill slag can be changed by changing the running direction of slag discharging medium, so as to reduce the scouring, soaking and friction of slag discharging medium and drill slag on the hole wall, which is beneficial to the formation of drilling hole;It can achieve the purpose of point coring by achieving "falling and discharging simultaneously";Drilling cuttings can be well collected, which is beneficial to the civilized production of construction site and prevents dirtiness and disorder;If inert gas is used for slag discharging during construction, it can also achieve the purpose of inhibiting spontaneous combustion of coal seam.Through the above technical scheme analysis, the device is theoretically feasible and the operation is reliable, which provides good drilling quality for casing, greatly improves the success rate of drilling and casing and the extraction effect.

This invention relates to the technical field of plastic recycling, and more particularly to a centralized processing device for polyethylene waste, comprising side plates, a first connecting plate, a first hydraulic telescopic cylinder, a second connecting plate, limiting rods, an extrusion assembly, and a drive assembly; several side plates are connected to a support block; a first connecting plate is disposed above the support block; a first hydraulic telescopic cylinder is fixedly connected to the first connecting plate; the telescopic end of the first hydraulic telescopic cylinder is fixedly connected to the second connecting plate; several limiting rods are fixedly connected to the second connecting plate; under the limiting action of the limiting rods, four through holes are formed inside the film block package. After inserting a PE tube into the through holes, the heat in the film block package can diffuse to the inside of the PE tube, and then diffuse from the inside of the PE tube to the external environment, avoiding heat accumulation and spontaneous combustion. At the same time, the limiting rods are also used to fix the middle of the film block package, preventing the film block package from shifting during the opening of the side plates, thereby avoiding affecting the gripping and positioning operation of the robotic arm.

This invention relates to the field of open-pit mine safety and disaster prevention technology, and discloses a method for the coordinated prevention and control of spontaneous combustion and instability of open-pit mine slopes based on solid waste spraying and drone inspection. The method involves preparing a solid waste-based fire-resistant and reinforcing slurry with both fireproofing and reinforcement functions using fly ash as the main solid waste. After spraying the slurry across the entire target slope, an initial digital twin benchmark model containing three-dimensional morphology and temperature field is constructed. Data is collected through periodic fully automated drone inspections to identify temperature anomaly zones and newly formed cracks, and a temperature-crack field distribution map is generated. Targeted reinforcement spraying is applied to anomaly areas, and the treatment effect is quantitatively verified. Based on the crack evolution law, high-frequency regeneration areas are identified, a risk index is calculated, and a graded coordinated early warning system for spontaneous combustion and instability is implemented. This method achieves the resource utilization of industrial solid waste, significantly reduces prevention and control costs, and simultaneously enables precise monitoring, targeted treatment, and coordinated early warning of two types of disasters on open-pit mine slopes, improving the systematic and intelligent level of mine safety management.

This invention relates to the fields of automated robot technology and coal yard safety management technology in thermal power plants, and particularly to a coal yard debris cleaning device based on an automated robot. The device includes a sensing module that collects and fuses data to output a comprehensive data stream. A twin module dynamically constructs and updates a dynamic digital twin through coupled discrete element method and computational fluid dynamics simulation. A risk prediction module uses a graph neural network surrogate model and Monte Carlo simulation to generate a spontaneous combustion probability spatial distribution map as dynamic risk information. A decision-making module integrates dynamic risk information and robot state to generate a set of candidate joint action strategies. A control module verifies the strategies through parallel simulation and performs multi-objective arbitration based on dynamic risk information to select the optimal control law and decouple it into low-level control commands. A feedback module executes commands and collects actual data, feeding it back to the twin module to correct the dynamic digital twin and to the control module to optimize decision weights.

This invention belongs to the field of powder metallurgy technology, specifically relating to a high-hardness, low-expansion, and low-oxidation cemented carbide and its preparation method. Doping is achieved through liquid mixing-evaporation crystallization, with precise control of the dopant element content achieved by coordinating temperature and pH control of the crystallization mother liquor. Furthermore, ball milling is eliminated, allowing the incorporated cobalt and chromium to undergo intermolecular mixing, which not only improves doping efficiency but also reduces impurities introduced by ball milling, ensuring the cemented carbide's low expansion coefficient and low oxidation increment. The powder is stored and mixed in a nitrogen atmosphere and at low temperature, reducing the probability of spontaneous combustion and ensuring production safety. Reduction carbonization using a nitrogen and hydrogen mixture not only promotes rapid one-step carbonization but also, by increasing the nitrogen flow rate, promptly removes the water vapor generated during reduction, reducing the risk of powder growth and ensuring the hardness of the cemented carbide.

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.

This utility model relates to the field of lithium battery technology, and provides a battery housing including a support base and side beams. The side beams are disposed around the edge of the support base to form an accommodating space for installing battery cell modules within the support base. Both the support base and the side beams have internal cooling channels for coolant flow, and the support base and / or the side beams are provided with inlets and outlets, both of which communicate with the cooling channels to form a circulating flow path for coolant. This utility model, by integrating cooling channels into both the side beams and the support base, reduces thermal management costs and effectively prevents thermal runaway. Furthermore, the circulation of coolant in this circulating flow path significantly improves the safety protection level of the battery pack, enhances the overall vehicle safety factor, and greatly reduces the probability of spontaneous combustion of the battery pack due to external force damage in the event of a car accident, thus protecting the personal safety of passengers.

This application relates to the field of fire early warning technology, and in particular to an intelligent fire early warning method and device for student dormitories. The method includes: collecting smoke concentration data, gas concentration data, flame signal data, and human movement status data; determining whether human movement exists based on the human movement status data; if no human movement exists, performing a fire risk assessment based on comparisons between smoke concentration data and preset smoke thresholds, comparisons between gas concentration data and preset gas thresholds, and whether the flame signal data is non-zero; if human movement exists, performing a fire risk assessment based on comparisons between flame signal data and preset flame thresholds, and whether the flame signal data is continuously rising. Therefore, this method is applicable to situations involving spontaneous combustion or electrical fires in student dormitories, avoiding false alarms caused by student activities, proactively identifying when students ignite other substances with candles or lighters, and avoiding false alarms due to dust or smog caused by heavy fog or dormitory cleaning.

This invention belongs to the technical field of blast furnace pulverized coal injection equipment, particularly the safety injection component for high-volatile bituminous coal and the blast furnace pulverized coal injection equipment and its usage method. Addressing the problems of low combustion rate, substandard pulverized coal particle size, and susceptibility to moisture absorption during pulverized coal storage, this component features an insulation sleeve on the outer wall of the injection pipe, preheating the pulverized coal with blast furnace exhaust gas to reduce heating energy consumption and promote rapid ignition. A spiral plate inside the injection pipe enhances the mixing of pulverized coal and nitrogen, and an electric push rod at the top controls a bending plate to adjust the pulverized coal injection angle, strengthening airflow disturbance and increasing the contact area between pulverized coal and oxygen. The blast furnace pulverized coal injection equipment includes a grinding cylinder and a storage box. The grinding cylinder has a multi-stage grinding structure, with a rotating shaft driving a grinding wheel to perform primary and secondary grinding of the pulverized coal, ensuring uniform particle size. The storage box utilizes exhaust gas heat to dry the pulverized coal and suppress spontaneous combustion. By optimizing the preheating, grinding, injection, and storage processes, the equipment improves the pulverized coal combustion rate and utilization rate, ensuring production safety.

The utility model discloses a special bridge for a dust area, which is characterized in that two inclined plates of a bridge cover plate are inverted V-shaped, a spring is arranged in the bridge cover plate, two ends of the spring are connected with the inclined plates, L-shaped plates are arranged at the bottom ends of the inclined plates, the L-shaped plates are bent towards the inner side of the bridge cover plate to form a groove structure, an extension plate is arranged at the top of the side wall of a bridge groove box, and a hanging plate is arranged at one end of the extension plate. The included angle between the hanging plate and the extension plate is 100-140 degrees, and the hanging plate is arranged in the groove structure in a penetrating mode. The spring is arranged in each section of the bridge cover plate, the groove structure is clamped by the hanging plate, and under the tension action of the spring, the connection tightness between the bridge cover plate and the bridge groove box is enhanced, tight closing of the bridge groove box is ensured, and dust invasion is prevented; the sandwich structure can effectively protect the internal cable from being damaged by external high temperature, the flame-retardant characteristic of the sandwich structure reduces the risk of spontaneous combustion caused by dust accumulation, and the safety and stability of the bridge in a dust environment are improved.

The present application belongs to the technical field of mine fire and gas prevention and control, and particularly provides a method for precisely regulating and controlling deep flow field in goaf, wherein nitrogen injection pipelines and gas extraction pipelines are respectively laid along air intake roadway and air return roadway; a plurality of nitrogen injection branches are assembled on the nitrogen injection pipelines, and positive pressure remote control valves are assembled on the nitrogen injection branches; the ends of the positive pressure remote control valves are all provided with nitrogen injection pipes extending into coal body; the nitrogen injection branches and extraction branches are numbered; the control pipelines of the buried remote control valves are arranged at a position far away from the collapsed goaf, so as to solve the problem of deformation or line interruption of the control pipelines caused by the collapse of the goaf; under the condition of spontaneous combustion and gas collaborative prevention and control, the deep flow field in the goaf is precisely regulated and controlled, nitrogen injection and gas extraction in the deep goaf are effectively carried out, the possibility of spontaneous combustion in the deep goaf is reduced, and the safety of the working face is ensured.

This invention belongs to the field of energy storage battery technology, and in particular, it is a lead-carbon energy storage battery that adopts an integrated self-locking and reinforcing rib synergistic expansion suppression structure. It solves the problems of unstable packaging shell assembly, poor heat dissipation, and easy expansion and spontaneous combustion of the battery body. The battery includes a packaging shell and an internal battery body. The packaging shell has a T-shaped groove on its side. The assembly and overall reinforcement are achieved by inserting I-shaped ribs into the T-shaped grooves of adjacent shells. The shell is composed of a frame and a side wall mechanism. The side wall mechanism includes a reinforcing rib grid, a partition plate with honeycomb holes, and a protective rib. The honeycomb holes are filled with heat-absorbing material. Heat dissipation holes are formed between the partition plate and the protective rib. Spiral rib II is provided inside, which communicates with the through holes on the frame to enhance heat dissipation. The cover plate is fixed to the transverse rod inside the shell by a plug plate with a hook at the bottom. An air bladder is also provided inside the shell. When the battery expands, it squeezes the air bladder, which drives the transverse rod to move down and press the cover plate.

This application discloses a combustion method and system for rapid load adjustment in a circulating fluidized bed boiler, relating to the field of power system technology. Fine pulverized fuel is transported via recirculated flue gas to a fine pulverized fuel supply pipe nested within a secondary air duct. The secondary air in the secondary air duct entrains the fine pulverized fuel into the dilute phase zone of the furnace. The pulverized coal is transported within the inert environment created by the recirculated flue gas, effectively isolating oxygen and reducing the risk of spontaneous combustion or deflagration that may occur due to volatile matter release and accumulation of pulverized coal in confined spaces such as the fine pulverized fuel supply pipe. This solution adjusts the load of the circulating fluidized bed boiler by regulating the fine pulverized fuel in the dilute phase zone. Compared to related technologies that rely on changing the main fuel and air volume in the dense phase zone to adjust the load of the circulating fluidized bed boiler, this method offers rapid response and significantly improves the flexibility of the circulating fluidized bed boiler and the grid peak-shaving capability.

An explosion-proof cyclone filter device relates to the field of waste gas treatment technology in monocrystalline silicon production. It includes: an inner cylinder; an outer cylinder fitted around the outer periphery of the inner cylinder, forming a sealed cooling chamber between them; a cooling water pipe installed within the cooling chamber and spirally coiled around the outer wall of the inner cylinder; and an air inlet pipe sealed and connected to the inner cylinder. The cooling water pipe extends from both ends of the outer cylinder, facilitating the introduction of cooling water. This rapidly reduces the temperature of the inner cylinder and red phosphorus dust to below the auto-ignition point of red phosphorus (260°C), thus eliminating the risk of spontaneous combustion of the red phosphorus dust due to high temperatures. Simultaneously, by introducing gas, the cooled red phosphorus dust in the inner cylinder undergoes an oxidation reaction with the gas, thereby achieving the harmless treatment of the red phosphorus dust. The combination of cooling and oxidation effectively prevents explosions during cleaning, thus avoiding damage to the cyclone filter and personal safety hazards to on-site personnel, and preventing fire accidents.

The utility model discloses a kind of high-temperature-resistant conductive foam, including foam body, its foam body outer wall is equipped with heat insulation sleeve, the heat insulation sleeve outer wall is equipped with fire-retardant sleeve, the fire-retardant sleeve outer wall is equipped with conductive cloth, the utility model relates to conductive foam technical field;The high-temperature-resistant conductive foam, by tearing off release film and movable foam body is adhered to the position on the top of workpiece by the adhesion of adhesive layer, and by the mutual cooperation of fire-retardant sleeve and heat insulation sleeve under work, so that foam body has good high temperature resistance and avoids the occurrence of spontaneous combustion, under the cooperation of heat dissipation bar and heat dissipation port, heat inside foam body can be emitted outward, with good heat dissipation effect, by the mutual cooperation of reinforcing rib and connecting seat under work, so that foam body has good strength, when being pressed or receiving external impact, can prevent the problem of deformation damage of whole.

This invention discloses a thermal failure protection method, device, equipment, and storage medium, belonging to the field of new energy vehicle technology. The invention acquires the real-time current of the vehicle's high-voltage circuit; determines whether the vehicle has a thermal failure risk based on the real-time current of the high-voltage circuit; if the vehicle has a thermal failure risk, determines a target thermal failure protection strategy based on the real-time current of the high-voltage circuit; and performs thermal failure protection on the vehicle according to the target thermal failure protection strategy. This method can achieve corresponding thermal failure protection for different high-voltage circuits, providing more comprehensive protection for the high-voltage circuit, improving the high-voltage safety performance of the product, further preventing spontaneous combustion of electric vehicles, and ensuring the personal and property safety of users.

This invention discloses a deposition apparatus and system for preparing phosphorus-carbon composite anode materials, relating to the field of lithium battery material technology. Specifically, it includes: a reactor body, a transition chamber, and first and second sealing assemblies; the reactor body and transition chamber are fixedly and sealed together, and each sealing assembly is equipped with a high-temperature valve. The transition chamber is filled with phosphorus-capturing active material. The supporting system includes a high-temperature roller kiln with preheating, high-temperature, and cooling temperature zones. This invention effectively solves the risks of white phosphorus leakage and spontaneous combustion during high-temperature deposition through the rigid seal between the reactor body and the transition chamber, and the physical adsorption and chemical passivation of active copper powder within the transition chamber. This apparatus and system achieve stable kilogram-level production in a single batch, increasing capacity by more than 100 times, reducing unit production costs by more than 60%, and controlling product consistency deviation within 5%, aiming to meet the large-scale mass production needs of power batteries for high-capacity, high-stability anode materials.

This application provides a flight device, comprising: a fuselage; and an energy storage component disposed outside the fuselage, the energy storage component including a connecting mechanism and a battery, the connecting mechanism being mounted on the fuselage; the connecting mechanism having a locked state and an unlocked state, the connecting mechanism being configured to switch between the locked state and the unlocked state, in the locked state the connecting mechanism being connected to the battery, and in the unlocked state the connecting mechanism being disengaged from the battery, thereby detaching the battery from the fuselage. With this configuration, in emergency situations such as battery spontaneous combustion, the connecting mechanism can switch to the unlocked state. Since both the connecting mechanism and the battery are located outside the fuselage, the interior of the fuselage can be effectively isolated from fire sources, while the battery can be quickly jettisoned.

This invention provides an intelligent prediction method and system for village fire spread paths, relating to the fields of fire science and computer physics simulation technology. The invention acquires three-dimensional spatial topological data and meteorological parameters of the village; through a street-valley and chimney effect coupled simulation module, combined with alleyway aspect ratio, slope, and wall roughness, it quantifies the wind field variation vector and spontaneous suction air volume under narrow terrain; through a multi-source fire leap-forward extrapolation module, it constructs a dynamic model covering fire generation, micro-topographic lift correction flight, and physical constraints of triggering conditions, extrapolating the coordinates of secondary fire jump points and filtering false fire alarms; through a radiation feedback and dynamic prediction module, it calculates the superposition of heat radiation from multiple reflections within the building angle to assess the risk of premature spontaneous combustion, and performs adaptive path replanning based on the monitoring logic of meteorological deflection and building collapse abrupt changes. This invention objectively recreates the discontinuous fire spread process at the microscale, improving the timeliness of prevention and rescue decisions.

This application discloses a pre-sulfurization treatment method for a hydrogenation catalyst, relating to the field of catalyst pre-sulfurization technology. The method involves adding a hydrogenation catalyst, a sulfiding agent (a), a dispersant, and a modified composite wetting agent to a sulfidation furnace for pre-wetting under a nitrogen atmosphere; then, hydrogen is introduced to replace the nitrogen, sulfiding agent (b) is added, and the temperature is raised for deep sulfidation; after sulfidation, nitrogen is introduced to replace the hydrogen, followed by segmented passivation, and the catalyst is cooled and discharged to obtain the pre-sulfurized hydrogenation catalyst. The modified composite wetting agent is composed of isocyanate silane-grafted modified polyethylene glycol monomethyl ether and hydroxyl-branched star-shaped polyether, which can improve the wetting effect of the sulfiding agent, thereby improving the sulfidation effect. The segmented passivation process enhances the passivation performance of the catalyst, avoiding the oxidation and heat generation problems that are common in catalysts. This method solves the problems of poor sulfidation uniformity, easy catalyst damage, and spontaneous combustion in existing technologies, improving the sulfidation rate and stability of the catalyst, and enabling safe long-term storage of the pre-sulfurized catalyst.

The invention discloses an on-line monitoring method for an ignition symptom of an easy-spontaneous-combustion multi-coal-seam goaf, and belongs to the technical field of coal mine safety monitoring. According to the method, multi-coal-seam stratified gas and temperature data are synchronously collected through photoacoustic spectrometry and infrared temperature measurement, and data transmission is awakened in a time-sharing mode through an underground low-power-consumption ad hoc network; a solid-gas-heat multi-field coupling seepage model is combined with a Lagrange particle tracking and physical information neural network, a gas migration path is reduced, and extrinsic abnormal data of interlayer gas blow-by and ventilation interference is eliminated; fusing oxidation kinetic parameters through a space-time attention Transformer network, and introducing dynamic causal discovery and time sequence comparative learning to suppress pseudo-correlation interference, so as to realize advanced identification and positioning of an ignition symptom; and uploading the result to a ground terminal. The method can reduce the false alarm rate, and improves the early-stage monitoring accuracy and reliability of spontaneous combustion of the multi-coal-seam goaf.

The utility model relates to new energy automobile whole car control field, concretely relates to a kind of heat management framework of life water tank of range-extender new energy motor home, including expansion water tank, coolant driving component, heat source component, life water tank and heat dissipation component, the expansion water tank and the heat source component be connected by water pipe, the heat source component and coolant driving component be connected by water pipe, the coolant driving component and the life water tank be connected by water pipe, the heat dissipation component is installed on the pipeline between the heat source component and the life water tank, solve the existing thawing slow of additional life water tank at present stage, electric safety hazard is prone to spontaneous combustion, the problem that the pipeline equipment of increase occupies life storehouse space reduces comfort and increases original vehicle power consumption burden, increases the cost of using car.

The present application relates to lignite drying technical field, propose a kind of vertical double-channel drying pipeline device and control method, the device includes vertically arranged drying pipeline shell, inside partition plate separates its into top intercommunicating uplink channel and downlink channel;Uplink channel bottom connects vertically extending pipeline, downlink channel bottom connects arc flow guide pipeline.The method is based on the principle of pressure difference inversion: obtain pipeline pressure difference by detection unit, utilize pre-calibrated pressure difference-flow relationship model to invert gas flow, and calculate material flow in combination with feeding frequency, and then real-time obtained gas-solid ratio;Control system generates multilevel control instruction according to gas-solid ratio, outlet moisture and pressure difference signal, carries out closed-loop regulation to fan and feeding device.The vertically arranged drying pipeline shell of the present application can avoid lignite accumulation, solve the problem of pipe accumulated coal powder spontaneous combustion in production process.

The utility model discloses a kind of processor control cabinets for preventing fire spread, including control cabinet body, the control cabinet body rear panel is equipped with the heat dissipation frame of multiple heat dissipation holes, the rear of the control cabinet body is equipped with the closure assembly that can close heat dissipation frame.The utility model has the characteristics that when encountering the spontaneous combustion accident of control cabinet body due to poor heat dissipation, fire can be quickly and effectively handled, prevent causing greater safety accident, and can be widely applied in metallurgical safety technical field.

The utility model discloses a current transformer with line protection, including current transformer body, the bottom of current transformer body and the top of base plate are in contact, the top inside of positioning stand is installed to the base plate, the front end of base plate is installed with mounting panel, the utility model discloses in the use process, place the line inside line spacing cavity, and the outer wall of line is wrapped through filling balloon, make filling balloon and flame -retardant layer all with the top outer wall of line and contact through the lower pressure connecting plate, adopt this kind of mode, can comb and limit wire, and then be convenient for the maintenance of later period, when the line spontaneous combustion, because the flame -retardant layer is in contact on the top outer wall of line, like this first through the flame -retardant layer and carry out flame -retardant, if the spontaneous combustion source is bigger, then will cause damage to the bottom of flame -retardant layer and filling balloon, filling the flame -retardant particle of filling balloon inside will further flame -retardant.

This utility model discloses an over-temperature alarm device for a stenter, including a stenter body. The upper surface of the stenter body is fixedly connected to a ventilation duct. A movable plate is installed inside the ventilation duct, and a high-temperature probe is fixedly installed on the side of the movable plate. The side of the movable plate is rotatably connected to a rotating shaft. One end of the rotating shaft is fixedly connected to a connecting wire. The outer side of the rotating shaft is fixedly connected to a fan blade and a cleaning plate. A telescopic plate is installed inside the movable plate, and a roller is installed at one end of the telescopic plate. The outer side of the ventilation duct is fixedly connected to an auxiliary exhaust duct. This utility model utilizes the inclined setting of the temperature measuring section, using gravity to move the movable plate and the high-temperature probe, detecting and alarming the temperature at different locations within the temperature measuring section. The air flowing inside the ventilation duct drives the fan blade to rotate, and simultaneously causes the cleaning plate to rotate, removing fiber lint adhering to the inner wall of the ventilation duct, reducing the risk of spontaneous combustion of the fiber lint.

This utility model relates to a fire-resistant storage device for oily waste bleaching clay, comprising a storage tank connected to the discharge pipe of at least one filter, a spraying assembly for spraying atomized water onto the oily waste bleaching clay inside the storage tank, an inflation assembly for filling the storage tank with inert gas, a detection assembly for detecting the storage environment inside the storage tank, and a controller for controlling the spraying of atomized water and the filling of inert gas. This utility model uses the detection assembly to detect the temperature, smoke, and oxygen content inside the storage tank containing the oily waste bleaching clay. Based on the detection results, nitrogen is injected into the storage tank using the inflation assembly to reduce the oxygen content. The spraying assembly sprays atomized water onto the oily waste bleaching clay inside the storage tank. These two methods work together to reduce water consumption and also reduce the risk of spontaneous combustion of the oily waste bleaching clay, thus improving storage safety.

The application is a kind of coal mine spontaneous combustion multi-parameter monitoring system and method, relating to the technical field of coal mine safety monitoring, comprising: gas sound coupling and hardware isolation module; low frequency band sound wave excitation module; acoustic echo receiving and front end conditioning module; TDR pure logic ranging and fault qualitative module. In the application, a special integrated forged tee cavity is used in combination with a high molecular sound-transparent isolation film structure, which not only realizes the physical isolation of flammable and explosive gases such as gas, toxic and harmful gases in the pipeline, but also ensures that the sound transmission rate and sound energy loss meet the preset requirements, meeting the stringent requirements of intrinsic safety and explosion prevention in coal mine underground, eliminating safety hazards caused by gas leakage, and not affecting the normal coupling transmission of sound waves.