31 results about "Active fire protection" patented technology

The active fire prevention system comprises a fire extinguishing module, a side span emergency module and a middle span emergency module, the fire extinguishing module comprises a plurality of fire pools fixed to the top of a bridge tower, and a water supply main pipe connected with the bottom of the fire extinguishing module is laid in the extending direction of the main cable and fixed to the top of the main cable; spraying branch pipes and temperature sensing automatic closing type sprayers are arranged on the water supply main pipe at intervals. The side span emergency module comprises a first emergency water storage tank and a first pressurizing water pump which are fixed in a stiffening beam and are communicated with a side span water supply main pipe through a first emergency connecting pipe, and the mid-span emergency module comprises a second emergency water storage tank and two second pressurizing water pumps which are fixed in the middle of a mid-span stiffening beam; and the two second emergency connecting pipes are respectively communicated with water supply main pipes on two sides of the midspan. Real-time fireproof protection of the main cable is achieved through the fire extinguishing module, the temperature rise of the main cable is directly prevented from exceeding the critical temperature, the risk of structural failure is avoided, the emergency module continuously provides a water source and pressure when the water source is insufficient, and the fire extinguishing duration is prolonged.

The invention belongs to the technical field of energy storage battery safety fire fighting, and particularly relates to an energy storage battery active safety fire fighting system with aerogel, which comprises a sensing layer, a transmission layer, a platform layer and an execution layer, the sensing layer collects operation and environment data of the energy storage battery, and the transmission layer transmits the data to the platform layer; the platform layer comprises three modules: a data preprocessing module processes received data; the risk identification module evaluates the preprocessed data in real time according to a preset strategy by using two active identification algorithms to obtain a risk evaluation result; the fire-fighting strategy making module determines an optimal fire-fighting strategy accordingly; and the execution layer receives the strategy and carries out control and aerogel fire extinguishing operation on the energy storage battery. The problem that in the prior art, an energy storage battery lacks an effective technical means in the field of active fire fighting can be solved.

The invention discloses a passive self-sensing active fire prevention method, system, equipment and medium for a power distribution pipe gallery and a cabinet, and belongs to the technical field of power system safety protection, and the method comprises the steps: monitoring an electromagnetic characteristic spectrum and an arc spectrum of a power distribution facility through a passive electromagnetic sensing network, and positioning and grading an early fire risk; the ignition time is predicted based on a dynamic heat model, and arrangement is optimized in combination with the suitability data of the perfluorohexanone microcapsules; and the self-powered integrated module triggers shock waves at key time to induce the microcapsules to cooperatively rupture to release the fire extinguishing agent. According to the invention, active fire prevention of passive accurate early warning and autonomous fire extinguishing is realized, and the response speed and reliability are obviously improved.

The invention discloses a perfluorohexanone microencapsulation-based passive self-sensing active fire protection device, and relates to the technical field of fire safety, the perfluorohexanone microencapsulation-based passive self-sensing active fire protection device comprises a storage bracket and a cross beam, the cross beam is fixedly connected with the storage bracket, and the arrangement direction of the cross beam is parallel to the long axis direction of the storage bracket; the mounting piece comprises a mounting plate and a buckle fixedly connected with the mounting plate, and the buckle is connected with the edge of the cross beam in a clamped mode; and the pressing piece comprises a connecting rope connected with the buckle and a pressing sleeve connected with the end part of the connecting rope. The connecting rope is connected with the connecting part, a maintainer pushes the pressing sleeve to move in the direction close to the mounting plate, the pressing sleeve moves to pull the connecting rope to move, the connecting rope moves to drive the side wall of the buckle to be bent inwards, and therefore fixation between the buckle and the cross beam is relieved, and the maintainer can conveniently complete dismounting of the mounting plate; therefore, maintenance personnel can replace the perfluorohexanone patch conveniently.

The invention discloses a heat preservation curtain wall structure applied to a building, and relates to the technical field of building curtain wall structures, the heat preservation curtain wall structure comprises a curtain plate assembly, the curtain plate assembly comprises a curtain plate main body, a fireproof part is embedded in the outer surface of the curtain plate main body, a guide groove is formed in the curtain plate main body, and a communicating pipe is fixedly connected to the curtain plate main body; a butt joint cylinder is fixedly connected to one side of the curtain plate body and arranged at one end of a communicating pipe in a sleeving mode, one end of the communicating pipe penetrates through the curtain plate body and communicates with the fireproof part, and a limiting hole is formed in the surface of the communicating pipe; and the mounting assembly comprises a mounting seat, an air cavity is formed in the mounting seat, a butt joint pipe is rotationally connected to the mounting seat, and one end of the butt joint pipe communicates with the air cavity. Active fire prevention can be performed through the curtain plate assembly under cooperation of the mounting assembly, upward flames can be actively hindered after a building is on fire, fire spreading can be actively intervened when a fire occurs, and the probability of causing large accidents is reduced.

The application relates to the technical field of cross-linked polyethylene power cables, and discloses a polyethylene flame-retardant power cable, which is characterized in that a flame-retardant structure layer is arranged between a cable core insulating layer and a cable armor layer, the structure layer is composed of equally-spaced separation ring assemblies and ceramic fillers filled between the separation ring assemblies, an outer part is uniformly wound with a ceramicized adhesive tape layer, the separation ring assemblies contain expanded fillers, the expanded fillers are driven to expand and push the inner thrust plates to slide when on fire, and the ceramic fillers are bidirectionally extruded: the ceramic fillers are dynamically filled in the gaps generated due to the collapse of the cable core insulating layer, and the internal fire passage is blocked; the ceramic fillers push the ceramicized adhesive tape layer in a softened state to embed into the armor layer pores, mechanical anchoring is formed, and interlayer peeling caused by solidification shrinkage is prevented. The application changes the cable from a passive fire resistance into an active fire prevention system with self-adaptive plugging and anchoring capacity, and significantly improves the structural integrity and flame-retardant reliability of the cable in a real fire.

This invention discloses a fire-resistant, flame-retardant, and highly weather-resistant integrated marine furniture system, comprising a three-layer architecture: a basic layer, an intelligent layer, and an application layer. The basic layer consists of prefabricated functional units and quick-connect interfaces for rapid installation. The intelligent layer includes an intelligent fire prevention unit and an adaptive environment unit. The intelligent fire prevention unit automatically triggers targeted aerosol fire suppression based on dual-condition logic using temperature and smoke sensors and safety control nodes deployed in key locations, enabling early autonomous fire suppression. The adaptive environment unit learns user habits through sensors and, upon user confirmation, solidifies "context-operation" rules, achieving personalized automatic environmental adjustment. The application layer provides various interactive terminals. This system represents an upgrade from passive alarm to active fire prevention, and from manual operation to intelligent adaptation, significantly improving the safety and comfort of ship cabins.

The invention relates to the technical field of heat-insulation fireproof materials, and discloses an active fireproof temperature-resistant heat-insulation flexible cloth and a preparation method thereof.The active fireproof temperature-resistant heat-insulation flexible cloth comprises a surface layer, a middle layer and a bottom layer which are arranged in a stacked mode, the surface layer and the bottom layer are both silicon-aluminum fiber cloth, the middle layer is aramid fiber cloth, and the bottom layer is silicon-aluminum fiber cloth. The upper surface and the lower surface of the middle layer are both coated with flame-retardant coatings, and the flame-retardant coatings comprise magnesium hydroxide, ammonium polyphosphate, magnesium silicate, silicon dioxide hollow microspheres, silicon nitride and a binder. The coating can quickly react to generate a ceramic phase to actively isolate heat transfer and open fire impact when encountering high-temperature flames, and the temperature resistance and heat insulation performance are good.

The application discloses a special fiber cloth-based modular military thermal insulation boot and a manufacturing method thereof, and belongs to the technical field of individual protection equipment. The thermal insulation boot comprises a composite function sole module, a core passive heat insulation inner container module, a boot body framework and integrated outer cover module and an optional active heating and control module. The core innovation lies in that high-silicon fiber cloth is used as the inner container core heat insulation material, and the extreme passive thermal insulation and active fire prevention are realized; the sole is integrated with a retractable anti-skid steel nail mechanism, which can be instantaneously switched between normal and ice surface / steep slope environments; a moisture management channel is designed between the inner container and the boot body, and a small fan ventilation system is integrated, so that the problem of dampness is solved; the inner container is pre-buried with an electrical connection interface, and the active heating module can be plugged and connected. The application has the advantages of passive thermal insulation, full-terrain anti-skid, active fire prevention, intelligent temperature control and easy maintenance through the modular design, and is suitable for military operations in extremely cold, slippery and potentially high-temperature environments, and effectively improves the survival ability and combat effectiveness of soldiers.

This invention belongs to the field of air separation technology and discloses a filtration, ventilation, and oxygen-enriched air supply system and method for underground engineering projects. The system includes a filter absorber and an air separation device. Gas first passes through the filter absorber and then enters the air separation device. The filter absorber is used to filter toxic gases. The air separation device includes an adsorption separation module that separates nitrogen and oxygen from the input gas. The oxygen separated by the adsorption separation module is delivered to personnel or equipment requiring oxygen through a first output pipeline. The separated nitrogen is delivered to equipment requiring nitrogen through a second output pipeline. The adsorption separation module includes an adsorption tower. Gas enters the adsorption tower, and after pressurization, nitrogen-enriched air is discharged from the top of the adsorption tower. After depressurization, oxygen-enriched air is discharged from the bottom of the adsorption tower. This solution can reduce the air supply volume and the risk of toxic contamination in engineering projects. It can achieve active fire prevention and increase the oxygen content in the air, improving personnel comfort.

The utility model relates to the technical field of decorative plates, and discloses a special sound-insulation heat-insulation fireproof decorative plate for a special site, which comprises an edge covering frame, a back side fixing layer arranged at the rear part in the edge covering frame, a sound-insulation layer arranged in front of the back side fixing layer in the edge covering frame, and a surface layer arranged in front of the sound-insulation layer in the edge covering frame, a plurality of fireproof components are uniformly arranged in front of the surface layer. According to the sound-insulation, heat-insulation and fireproof decorative plate special for the special site, breakthrough improvement is achieved in structural design and functional application. The active fireproof assembly designed on the surface layer greatly improves the initiative and safety of the board to deal with fire, and can quickly release a fire extinguishing agent at the initial stage of the fire to actively stop fire spreading. Due to the innovative design, the decorative plate becomes a novel decorative material with an active protection function, not only can cope with fire disasters, but also can remarkably improve the safety of sites, and is particularly suitable for special occasions such as machine rooms, laboratories and the like with extremely high fireproof requirements.

The invention relates to the technical field of parking garages, and discloses a fireproof design method for a mechanical three-dimensional parking garage, which is suitable for urban high-density parking areas containing new energy vehicles. The method comprises the following core steps: determining a first-grade fire resistance grade, and constructing a specific fire heating curve containing thermal runaway, continuous combustion and attenuation stages in combination with a new energy vehicle spontaneous combustion experiment and FDS simulation; the critical temperature method is used for calculating the temperature rise of the component, and the bearing force method is used for introducing local high-temperature correction; hierarchical fireproof protection (steel structure multi-layer coating, equipment partition isolation and active fireproof linkage) is designed; and strengthening a fireproof structure and making a full-period maintenance plan. The method breaks through the limitation of the traditional design, covers the checking calculation of key components, greatly improves the structural safety and system reliability in the fire, and is high in operability and wide in adaptability.

The invention relates to a current collector containing a heat-sensitive flame-retardant microcapsule coating, a preparation method of the current collector and application of the current collector in a lithium battery, firstly, a heat-sensitive flame-retardant microcapsule wrapped with a fire extinguishing agent core material is prepared and mixed in conductive slurry, and the current collector is coated with the heat-sensitive flame-retardant microcapsule; after the current collector coated with the heat-sensitive flame-retardant microcapsule coating is further prepared into a lithium battery, an active fireproof function can be realized, and when the temperature of the battery exceeds a set threshold value, a fire extinguishing agent is automatically released, so that millisecond-level active protection is realized; the fire extinguishing unit is integrated on the current collector in situ, so that the purpose of efficiently inhibiting thermal runaway is achieved.

The present application relates to a kind of active and passive integrated fireproof insulation board and its preparation method, including n passive fireproof layer and n or n+1 active fireproof layer;Passive fireproof layer and active fireproof layer are integrated;Passive fireproof layer includes inorganic fiber felt and aerogel;Aerogel is obtained by curing adhesive aerogel stock solution, stock solution includes: 1000-4000 parts of silica sol by mass, silicate 50-150 parts, phosphate binder 10-50 parts, quicklime 5-20 parts, titanium white 5-50 parts, calcium stearate 10-50 parts, hydrophobic modifier 5-50 parts, acid-base regulator 5-50 parts and solvent 1000-4000 parts;Active fireproof layer is at least one of inorganic fireproof board material with heat decomposition active energy consumption, such as gypsum fireproof board.The present application solves the problems such as high organic content, poor flame retardance, high hygroscopicity and significant decline in thermal insulation performance and safety after use in existing fireproof insulation board.

The application discloses a novel active fireproof distribution box in the technical field of distribution boxes, which comprises a box body, and circular shafts are fixedly installed at the back of both sides of the inner cavity of the box body. The high-pressure cavity, electromagnetic valve, circular air bag and first thorn needle are arranged. When a fire breaks out inside the box body, dense smoke will be continuously generated inside the box body. At this time, the two smoke sensors can sense the generation of the dense smoke and send a signal to the controller. The controller will control the electromagnetic valve to open. At this time, the high-pressure gas in the high-pressure cavity can enter the inside of the bottom cavity. Under the action of the air pressure, the moving plate can drive the first thorn needle to move downward. Finally, the bottom end of the first thorn needle can puncture the circular air bag, so that the circular air bag is burst open. At this time, the dry powder in the circular air bag can be scattered downward, so that the effect of extinguishing the fire source inside the box body can be achieved, and the active fireproof purpose is effectively achieved.

The invention discloses a fireproof device of a power battery and a use method thereof, and the fireproof device comprises a box body which is detachably connected with a cover plate; the passive fire extinguishing assembly is arranged on the inner side of the box body so as to convey a fire extinguishing agent when the battery is on fire; the active fire prevention assembly and the passive fire extinguishing assembly are arranged side by side so as to actively release a fire suppression gas to a battery; the shuttle valve is arranged at the output end of the passive fire extinguishing assembly, and the input end of the shuttle valve communicates with the active fire extinguishing assembly; by arranging the passive fire extinguishing assembly, the active fireproof assembly, the shuttle valve and the controller, the device can convey a combustion-supporting gas into the power battery box when no fire occurs, so that the combustion-supporting oxygen concentration is reduced, the occurrence probability of the fire in the power battery box is reduced, meanwhile, a fire extinguishing agent can be input in time to extinguish the fire when the fire occurs, and the fire extinguishing efficiency is improved. In addition, a sealing structure is arranged at the heat dissipation holes, so that the influence on electric parts inside the box body when a fire occurs on the periphery of the box body is avoided.

The invention relates to the technical field of wind power generation equipment, and discloses a fireproof cabin based on offshore wind power generation, which comprises a cabin shell, a fireproof separation mechanism, a ventilation mechanism and an air supply mechanism. The interior of the cabin is divided into a plurality of independent fireproof subareas by arranging the fireproof separation mechanism, so that fire is prevented from spreading in the cabin, the fire is controlled in a local area, and the situation that an initial small fire is developed into a whole-cabin catastrophic fire is avoided; the ventilation mechanism and the air supply mechanism convey air into the cabin together and exhaust the air through the air outlet pipe, and a positive pressure environment higher than the external environment air pressure is formed and maintained in the cabin. The positive pressure design can effectively prevent an external fire source from invading the cabin; as the positive pressure airflow can prevent external smoke and flame from entering, and meanwhile, oxygen flowing inwards is reduced, and internal fire diffusion is restrained. The active fire prevention capacity of the cabin can be improved, and the cabin is suitable for the offshore remote environment and the occasion where external rescue is difficult to arrive quickly.

This invention discloses a multifunctional coating, its preparation method, and its application, belonging to the technical field of bridge protection materials. This invention utilizes a micro-nano composite structure of MOF and molybdenum disulfide grown in a graded manner on the surface of a thin sheet material, synergistically with fluorosilicone resin to prepare an anti-icing coating. The anti-icing coating prepared using this method exhibits excellent anti-icing performance, achieving ultra-low ice adhesion. Furthermore, molybdenum disulfide has high photothermal conversion efficiency; in cloudy conditions, it converts ultraviolet light into heat energy, increasing the surface temperature and significantly delaying the icing initiation time. This invention also provides a multifunctional coating that achieves integrated fireproofing and ice-repelling through a gradient structure design of "aerogel felt - sealing layer - anti-icing layer," exhibiting high durability in extreme environments and a long service life, providing long-term protection. Specifically, the aerogel felt can insulate against flames up to 1100℃, and the anti-icing functional layer maintains low ice adhesion strength, simultaneously achieving efficient ice repellency and active fireproofing and heat insulation.

The invention provides a fireproof material. The fireproof material is composed of a eutectic solvent and a flame-retardant filler dispersed in the eutectic solvent, the eutectic solvent is used as a continuous phase matrix and a charring agent of the material; wherein the eutecticevaporate solvent is composed of a hydrogen bond acceptor and a hydrogen bond donor, the eutecticevaporate solvent can be decomposed to form a compact carbon layer at a high temperature, so that the active fireproof effect is achieved, and the invention relates to the technical field of new materials and fireproof safety. When the selected eutectic solvent system is heated, a hydrogen bond network of the eutectic solvent system is disintegrated, the components can be subjected to a series of chemical reactions such as decomposition, crosslinking and cyclization, a compact, stable and porous carbon layer is generated in situ, and the carbon layer serves as a physical barrier, so that the fireproof performance of the fireproof material is improved. And heat and oxygen can be effectively prevented from being transferred to the inside, so that an integrated efficient flame-retardant effect from inside to outside, which is not possessed by a traditional physical blending material, is realized.

A fire protection device for battery pack in a vehicle is disclosed the device comprising: a plurality of sensor modules coupled to a battery management system (BMS), and is configured to detect at least one condition associated with the battery pack; a control unit coupled to the plurality of the sensor modules; and at least one fire suppressor coupled to the control unit, wherein the control unit is configured to receive at least one input from the plurality of sensor modules, the input indicating the at least one condition associated with the battery pack analyse input value associated with the condition to determine if the input value condition is beyond a threshold value; activate the fire suppressor based on determination that the input value is beyond the threshold value; and send feedback of fire suppression to the BMS.

This invention provides a method and system for pre-analyzing the impact of public figures' statements based on multi-agent intelligence. The method includes: first, a social background generation module retrieves background information and related social issues of the public figure in parallel, constructing a semantic environment that closely resembles reality. Then, the core multi-agent discussion module is activated, driving multiple agents to conduct multiple rounds of simulated discussions. This process is not simple text analysis, but a dynamic simulation of the clash of viewpoints, the evolution of positions, and the fermentation of public opinion in real society. Finally, the consequence analysis module outputs a structured, multi-dimensional risk report based on the simulation results. This transforms an invisible, future public opinion risk into a quantifiable and analyzable "sandbox simulation" result through technological means, achieving a fundamental shift from "passive firefighting" to "proactive fire prevention." Its technological superiority is unmatched by existing post-event negative situation analysis tools.

The semi-active fireproof aluminum alloy column comprises a stand column, an inner cavity of the stand column is divided into an upper water storage cavity and a lower water storage cavity through a partition plate, an upper water supplementing tank with an opening in the upper portion is arranged in the upper water storage cavity, and an outer side water storage area is formed between the upper water supplementing tank and the upper water storage cavity; a water mist spraying device connected with the bottom of the upper water supplementing tank is arranged on the outer wall of the stand column; the bottom of the upper water supplementing tank communicates with the lower water storage cavity through a water supplementing pipe, and the top of the lower water storage cavity communicates with the upper water storage cavity through a breather pipe. According to the semi-active fireproof aluminum alloy column, a pure mechanical structure is adopted, power supply or complex control is not needed, the reliability is high, and maintenance is easy and convenient.

The invention discloses a thermal management intelligent early warning cable based on a high-flame-retardant composite phase change material and a preparation method, the cable comprises a cable core, the cable core comprises a plurality of conductor units and a plurality of special temperature sensing optical cables, gaps of the cable core are filled with the high-flame-retardant composite phase change material, and an outer sheath is extruded outside the cable core. According to the invention, the embedded distributed high-temperature-resistant sensing optical fiber is utilized to realize real-time sensing and accurate positioning of abnormal temperature of the cable, meanwhile, polyethylene wax / EVA is utilized as a matrix, and a high-flame-retardant composite phase-change material which is compounded with expandable graphite, ammonium polyphosphate and other components is utilized for filling, so that rapid absorption and slow release of instantaneous thermal shock are realized, and the thermal shock resistance of the cable is greatly improved. And an active fireproof barrier is constructed by virtue of the intrinsic high-flame-retardant characteristic, so that multiple problems of fault early warning lag, out-of-control heat accumulation and self-flammability of the material are synchronously solved, and early intelligent intervention and active suppression of cable fire risks are realized.

The application discloses a fireproof device of a power battery and a use method thereof, and relates to the technical field of power batteries, which comprises a box body, a cover plate detachably connected to the box body, a passive fire extinguishing assembly arranged on the inner side of the box body to deliver fire extinguishing agent when the battery catches fire, an active fireproof assembly arranged side by side with the passive fire extinguishing assembly to actively release fire-retardant gas to the battery, and a shuttle valve arranged at the output end of the passive fire extinguishing assembly and connected in communication with the active fireproof assembly. The application is provided with the passive fire extinguishing assembly, the active fireproof assembly, the shuttle valve and a controller. When there is no fire, the device can deliver fire-retardant gas into the power battery box to reduce the oxygen concentration and the probability of fire in the power battery box. When a fire occurs, the device can timely input fire extinguishing agent to extinguish the fire. In addition, a sealing structure is arranged at the heat dissipation hole to avoid affecting the electrical devices inside the box body when a fire occurs around the box body.

The invention discloses a power distribution pipe gallery and cabinet passive self-sensing active fireproof detection method and system based on perfluorohexanone microencapsulation, and belongs to the technical field of electrical fireproof detection, and the method comprises the steps: collecting three-phase current harmonic waves, and converting the three-phase current harmonic waves into magnetic field intensity; establishing a multi-mode resonance model to identify an overall breathing mode frequency, an interlayer dislocation mode frequency and a liquid nucleus shaking mode frequency, and comprehensively outputting a structure state label; the natural fracture type of each position point is pre-judged according to the structure state label; constructing a graph structure model to iteratively simulate the cascade process of heat conduction and node fracture, and outputting a fracture space-time sequence; analyzing a spatial expansion mode and a natural fracture type time evolution trend based on the fracture space-time sequence, determining a coping strategy and an early warning level, and extracting a fault position, a phase and an early warning moment; and comprehensively judging fracture and fire extinguishing success by comparing a judgment standard. Through passive self-sensing detection, microcapsule structure state fine determination, cascade fracture space-time prediction and graded early warning closed loop verification are realized.

The present invention belongs to the field of coal mine safety and relates to a method for active fire prevention by combined gas-liquid two-phase injection coupled inerting before mining of thick coal seams. The method comprises the following steps: injecting an inhibitor solution, nitrogen and carbon dioxide composite inert gas into the coal body in sequence before mining at the working face, thereby effectively isolating the coal body from oxygen, forming a dual protection of gas-liquid two-phase coupled inerting, and effectively inhibiting or delaying the oxidation and spontaneous combustion of loose coal bodies in goafs and coal pillar areas, thereby achieving the purpose of proactively and actively preventing spontaneous combustion of coal in goafs, and providing an important technical means and approach for effectively solving the problem of comprehensive fire prevention and extinguishing during the initial mining and caving of fully-mechanized caving working faces in extra-thick coal seams.

The application discloses a kind of building thermal insulation curtain wall structures, relate to building curtain wall structure technical field, including curtain board assembly, including curtain board main body, the outer surface of curtain board main body is embedded with fireproof part, the guide groove is opened in curtain board main body, the communicating pipe is fixedly connected in curtain board main body, the butt joint barrel is fixedly connected in the side of curtain board main body, and it is set in one end of communicating pipe, the communicating pipe one end is passed through curtain board main body and is communicated with fireproof part, limit hole is opened in the surface of communicating pipe;And, installation component, including mounting seat, air cavity is opened in the mounting seat, butt joint pipe is rotatably connected on the mounting seat, and one end thereof is communicated with air cavity.The application can be actively prevented fire by the cooperation of curtain board assembly in installation component, when building is on fire, the fire that can be actively hindered to up and down, can actively intervene when fire occurs Fire spread, reduce the probability of causing large accident.

The invention relates to the technical field of cross-linked polyethylene power cables, and discloses a polyethylene flame-retardant power cable which is characterized in that a flame-retardant structural layer is arranged between a cable core insulating layer and a cable armor layer, and the structural layer is composed of separation ring assemblies arranged at equal intervals and ceramic filler filled between the separation ring assemblies. A ceramic adhesive tape layer is uniformly wound outside the cable core, expansion filler is contained in the separation ring assembly, the expansion filler is heated to expand to drive an internal pushing plate to slide in a fire disaster, and the ceramic filler is extruded in two directions to dynamically fill a gap generated by collapse of the cable core insulating layer inwards to block an internal fire behavior channel; and the ceramic adhesive tape layer in a softened state is pushed outwards to be embedded into pores of the armor layer, so that mechanical anchoring is formed, and interlayer stripping during curing shrinkage is prevented. The cable is converted from passive fire resistance into an active fire prevention system with self-adaptive plugging and anchoring capabilities; and the structural integrity and the flame-retardant reliability of the cable in a real fire disaster are obviously improved.

This invention discloses a gas-solid two-phase coupled active fire prevention and explosion suppression device and method for highway tunnels, relating to the field of highway tunnel fire prevention and explosion suppression technology. The device includes a monitoring structure, an explosion suppression structure, and a control system. The monitoring structure is used to detect pressure and flames within the highway tunnel and is electrically connected to the control system. The explosion suppression structure includes a gas generator and a powder storage tank. The gas generator is electrically connected to the control system and connected to the powder storage tank. The gas generator generates inert gas, and the powder storage tank stores powdered explosion suppressant. The powder storage tank is connected to a nozzle, which extends into the highway tunnel. This invention can actively control vehicle combustion and explosion hazards in highway tunnels in stages, solving problems such as passive explosion suppression, unsatisfactory suppression effects, and high risks existing in the prior art.