62 results about "Fire propagation" patented technology

The invention relates to a fire-fighting robot for a transformer substation. The fire-fighting robot comprises a routing-inspection robot, a gas detection device, an infrared temperature measurement device, a fire extinguishing device and a main control computer, wherein the routing-inspection robot is arranged in the transformer substation, a routing-inspection route is painted at the ground of a working space of the routing-inspection robot, and a plurality of radio frequency cards for positioning are mounted at ground key points. The fire-fighting robot has the beneficial effects that the automatic routing inspection can be carried out based on routing-inspection route marks and a navigation device; the gas detection device is utilized for monitoring the characteristic gas concentration of an early-stage fire disaster in a production place of the transformer substation in real time and pre-warning the concentration overrun condition in a grading manner; the infrared temperature measurement device is utilized for collecting infrared temperature images of production devices, and pre-warning over-temperature conditions of the devices in a grading manner and positioning fault points; the fire extinguishing device is utilized for rapidly extinguishing the sudden fire, controlling the fire propagation in an initial stage and earning time for the rescue operation. Therefore, the precaution and the fighting of the early-stage fire disaster are strengthened, and the fire safety situation of the transformer substation is effectively improved.

The invention discloses a simulation test platform of a transformer fire propagation behavior. The simulation test platform comprises an anti-explosion isolation room, a heating device, an ignition device, a data collection system and a fire extinguishing device; the anti-explosion isolation room comprises a bottom plate, an isolation wall and a top cover; a boss is arranged on the bottom plate; the isolation wall is arranged on the bottom plate to form a test space with an opened top end; the boss is located in the test space; the top cover is detachably connected to the top of the isolationwall to seal the test space, and a to-be-detected transformer is arranged on the boss; the heating device is arranged at a place, below the to-be-detected transformer, on the bottom plate; the ignition device is arranged at an inner wall of the isolation wall, and an ignition end extends to a region above the boss; the data collection system comprises multiple monitors arranged in the anti-explosion room and a PC computer out of the anti-explosion isolation room; each monitor is connected to the PC computer; the fire extinguishing device is arranged on the isolation wall to accurately acquirea temperature change rule; the different to-be-detected transformers can be repeatedly simulated, and the test cost can be reduced.

The invention relates to a multifunctional fire test furnace system device which comprises a heating furnace body, a fuel system, an electronic ignition and control system, a combustion control system, an air supply system, a smoke exhaust system, a smoke characteristic test system, a temperature field and radiant heat flux test system, a furnace chamber and flue pressure test system, a pump-type water-spraying fire extinguishing system, an experiment image acquisition system and a loading device. The fire test furnace can carry out multi-angle experiment simulation on building structure system conditions under the high-temperature fire effect, and can study ignition characteristics, fire propagation characteristics and combustion rules of a building structure system as well as smoke flow characteristics, propagation rules and influencing characteristics and rules of the technique of smoke prevention and evacuation on fire propagation; and the research result can provide reliable theoretical analysis, experimental basis and scientific reference for fire protection performance design of various building structures and building systems.

The invention relates to an antidrip flame-retardant PVC-U (unplasticized polyvinyl chloride) pipe and a preparation method thereof. The PVC-U pipe is prepared from the following raw materials in parts by weight: 100 parts of polyvinyl chloride resin, 1-20 parts of intumescent flame retardant, 0.5-6 parts of impact modifier, 0.5-6 parts of heat stabilizer, 0.5-3 parts of processing assistant, 0.5-4 parts of lubricant, 0.01-5 parts of pigment and 1-40 parts of calcium carbonate. The flame propagation grade of the pipe is lower than or equal to 25, and the fuming grade is lower than or equal to 70, so the flame propagation grade and fuming grade are obviously enhanced as compared with the existing flame-retardant PVC-U pipe. The properties of the pipe conform to the requirements in GB/T10002.1 or GB/T5836.1. After the intumescent flame retardant is used in the PVC-U pipe, various properties conform to the standard requirements, and the PVC-U pipe is suitable for laying drain lines and conduits.

The invention discloses an embedded lamp with a lamp body mounted in a fire-proof cover, the fire-proof cover is composed of a metal layer envelopping a fire-proof heat insulation layer or coated with the fire-proof heat insulation layer, the fire-proof cover can prevent fire propagation from the lamp body to circumambience, and the fire-proof heat insulation layer would not make a temperature of an outer surface of the fire-proof cover be excessive high so as to result burning of some tinder around the fire-proof cover, a cover wall of the fire-proof cover is provided with a heat dispersion opening mounted with an expanded type fire-proof sheet, a heat dispersion hole is arranged at a position of the expanded type fire-proof sheet corresponding to the heat dispersion opening and/or the heat dispersion hole is arranged between an edge of the expanded type fire-proof sheet and an edge of the heat dispersion opening, so that the lamp can performing heat dispersion normally at a common condition, when encountering a fire, the heat dispersion opening can be automatically closed by rapid expansion of the expanded type fire-proof sheet, the fire-proof cover completely insulates the lamp from outside tinder, thereby preventing the tinder propagation from the lamp to outside.

The invention discloses premixed polyether polyol, polyisocyanurate foam, as well as a raw material composition and a preparation method of the polyisocyanurate foam. The premixed polyether polyol provided by the invention is prepared from the following components: polyether polyol A, polyester polyol A, a foam stabilizer, a trimer catalyzer, a foaming agent, water and a fire retardant; the foaming agent is a fluorinated hydrocarbon foaming agent; the fluorinated hydrocarbon foaming agent is 1,1,1,3,3-pentafluoropropane and/or 1,1,1,3,3-pentafluorobutane. Under the condition of not using an HCFC-141b foaming agent, the polyisocyanurate foam provided by the invention can reach the standards that the fire propagation index is less than or equal to 25 and the smoke increase index is less than or equal to 450, so that the polyisocyanurate foam provided by the invention meets the demands on inflaming retarding of thermal insulation materials used for high-rise buildings and corridors in National Fire Council Life Safety Act of America.

The invention discloses an anti-electrostatic flame-retardant PA (polyamide) color master batch. The anti-electrostatic flame-retardant PA color master batch is prepared from the following raw materials in parts by weight: 50 to 70 parts of PA, 25 to 40 parts of inorganic pigment, 20 to 30 parts of fiber, 4 to 6 parts of composite anti-electrostatic agent, 3 to 5 parts of composite dispersant, 6 to 8 parts of magnesium hydroxide flame-retardant agent, and 1 to 2 parts of compatilizer. The anti-electrostatic flame-retardant PA color master batch has the advantages that the cost is low, the preparation technology is simple, and the anti-electrostatic property and flame-retardant property are excellent; when the anti-electrostatic flame-retardant PA color master batch is used for coloring thePA product, the fire risk of the PA product is reduced, the safety hidden hazards are reduced, and the fire propagation speed is effectively inhibited when a fire accident occurs, so as to provide the valuable time for fire extinguishing, and protect the property safety and body safety of people.

A double-layer high-shielding bundle coaxial cable belongs to the technical field of bundle coaxial cables. The double-layer high-shielding bundle coaxial cable comprises a cable body and a pluralityof flame-retardant cutting devices which are arranged on the cable body. The cable body comprises a plurality of sub-conductors, sub-shielding layers which are arranged outside each of the sub-conductors, a total shielding layer which is arranged outside the sub-conductors, a fireproof layer which is arranged outside the total shielding layer, and a protecting layer which is arranged outside the fireproof layer. The flame-retardant cutting device comprises a housing, a cutter which is arranged in the housing, an elastic member which is arranged at back part of the cutter, and a fusing member which is connected with the cutter and the inside wall of the housing. The edge of the cutter faces the cable body and is separated from the cable body by a certain distance. Two sides of the flame-retardant cutting device are provided with positioning devices. The positioning device comprises a spacing ring, an annular sliding trough which is arranged on the outside surface of the spacing ring, asliding ring which slidably sleeves the annular sliding trough, and a fixed member which is connected with the sliding ring. The double-layer high-shielding bundle coaxial cable has advantages of protecting the cable system, preventing fire propagation, and reducing loss.

The invention relates to a thermal runaway protection system for a battery pack, which comprises a closed battery pack box body and a plurality of battery modules positioned in the battery pack box body, and is characterized in that a plurality of closed and mutually independent combustion chambers are arranged in the battery pack box body, the number of the combustion chambers is the same as thatof the battery modules, and each battery module is positioned in one combustion chamber. Combustion of the battery module can be controlled within a certain range, and harm to people or objects due to heat transfer or fire propagation is avoided. Meanwhile, explosion can be avoided; harmful gas generated by combustion can be purified, and pollution to the environment is reduced.

The invention relates to technical field of building fire protection, and discloses an energy-saving aluminum alloy fire window. The energy-saving aluminum alloy fire window comprises a window frame,the window frame comprises four frames, a sash is hinged to one of the vertical frames, a plurality of separating plates are fixed in the frames and divide the inner part of the frames into a plurality of cavities, the cavities are provided with fire-fighting assemblies, the fire-fighting assemblies comprise shells fixed to the separating plates, the shells are piled with carbonate powder, liquidbags loaded with concentrated acid solutions are fixed to the top walls of the shells, expansion blocks made from thermal expansion materials are fixed to the inner side walls of the shells, spikes for piercing the liquid bags are fixed to the sides, facing the liquid bags, of the expansion blocks, and air outlet pipes communicating with indoor air further communicate with the tops of the shells.According to the scheme, when the fire window suffers heat, the spikes pierce the liquid bags, concentrated acid in the liquid bags reacts with the carbonate in the shells to generate carbon dioxide,the carbon dioxide enters indoor along the air outlet pipes, thus the oxygen concentration indoor is lowered, and the purposes of fire propagation containment even flame putting out are achieved.

The invention provides an environment-friendly fireproof emulsion paint for an exterior wall. The environment-friendly fireproof emulsion paint for the exterior wall comprises chlorine resin, ammonium polyphosphate, diethylenetriamine pentaacetic acid, melamine, sodium nitrilo triacetate, monoammonium phosphate, a pure acrylic emulsion, a preservative, an inorganic packing, an organic fire retardant, expanded graphite and a foaming agent. The environment-friendly fireproof emulsion paint has the advantages that the burning characteristics of the material can be changed; the fire propagation is delayed; the fire resistance is improved; and combustion can also be blocked within a certain period of time.

The invention relates to a fire propagation reason analysis system. The fire propagation reason analysis system comprises a hardware part and a software part, wherein the software part comprises an event-reason logic relation module and a GUI online analysis module. The software part is built by using a GUI in a MATLAB, the event-reason logic relation module is used for building the correspondingrelations between basic events and fire propagation reasons, and the building process comprises the specific steps that according to a fire case database, the basic events happening in a fire are found out one by one and induced into a basic event database; the fire propagation reasons are found out one by one, and a fire propagation reason database is built; the logic relations between the basicevents and the fire propagation reasons are built by using a statistical induction method. The GUI online analysis module comprises a basic event selecting unit, an output unit for outputting the firepropagation reasons corresponding to an event, and an induction analysis unit used for inducing the fire propagation reasons corresponding to the selected basic event. The system can be used for quickly analyzing the reasons for a fire, the system is simple and convenient to use, and time and labor are saved.

The invention discloses phase-change intumescent flame-retarded multi-component alkyd resin transparent finish paint and a preparation method thereof. The finish paint comprises a component A and a component B with the mass ratio being 1:(0.8-1.2), wherein the component A is formed by performing vacuum grinding on alkyd resin, nanometer cellulose phosphate, a polyoxyethylene ether oleate antidusting agent, an organic silicon defoamer, hydroxyl silicone oil, amino silicon oil, a zinc isoocatanoate drying catalyst, a modified polydimethyl polysiloxane flatting agent, aliphatic alcohol phosphate,starch phosphate phase-change fireproof slurry, a dispersing agent, turpentine and a xylene solvent; the component B comprises 1,6-hexamethylene diisocyanate curing agent and an acetone diluent. Thefinish paint not only is applicable to nature color finishing of wooden furniture and home decoration, but also can absorb most of heat to inhibit flame at the preliminary stage of fire, effectively prevent internal materials from being invaded by the fire, effectively isolates flame, prevents fire propagation, and reduces the occurrence rate of fire.

The invention discloses a hot-melting alloy constraining type isolating mechanism based on inertia, and belongs to the technical field of fuse safety mechanisms. The isolating mechanism comprises a body and a rotor, wherein a rotor hole is formed in the center of the body, and the rotor is coaxially embedded into the rotor hole in a sleeved mode and can rotate relative to the body; the rotor and the body are provided with corresponding holes used for containing a hot-melting alloy pin puller, an inertia safety part, a fire propagation part and a detonation propagation part; the isolating mechanism achieves a large isolating relieving rotation angle by optimizing the hole position relation, and through arrangement of a multi-stage safety mechanism, the isolating mechanism in a safe state and a due-out state can be locked at the corresponding positions. According to the hot-melting alloy constraining type isolating mechanism based on the inertia, on one hand, the part arranging mode of the isolating mechanism is optimized, the space size of the isolating mechanism is decreased, and the applicability of the isolating mechanism is improved; on the other hand, the safety of the isolating mechanism can be effectively improved through two-stage safety in the safe state, detonation sequence alignment can be effectively guaranteed through two-stage locking in the due-out state, and therefore the detonation efficiency is greatly improved.

A hybrid framed curtain wall panel is used to prevent inter-floor fire propagation from both the interior and exterior, featuring the combined use of three different infill materials for three different functions. The first infill is a continuous exterior fire-resistant thin pane for providing an aesthetic element and for preventing exterior inter-floor fire propagation. The second infill is a small band of fire-resistant material, such as mineral wool panel infill, located at the slab edge for preventing interior inter-floor fire propagation. The third infill is a structural infill, such as composite foam panel infill, to provide a light-weight material with excellent thermal insulation value.

The invention relates to a fire emergency equipment control method, device and system and a storage medium. The method comprises the steps of: when a fire signal is received, obtaining area information of a fire area; determining a fire propagation direction according to the area information of the fire area; determining an evacuation priority of each non-fire area according to the fire propagation direction; and switching the states of fire emergency devices in each non-fire areas into an emergency state in sequence according to a preset time interval and sequences of the evacuation priorities. Through analyzing the area information of the fire area to determine the fire propagation direction, the evacuation priority each non-fire area is determined. The emergency devices in each non-firearea are controlled to be switch to the emergency state according to the sequences of the evacuation priorities, and the persons in each non-fire area are guided in sequence to carry out evacuation,so that chaotic situation and person congestion are avoided, and the person evacuation efficiency is improved.

The invention discloses an inertia-based electromagnetic constrained isolation mechanism, and belongs to the technical field of fuse safety mechanisms. The isolation mechanism comprises a body provided with a rotor hole in the centre, and a rotor coaxially nested in the rotor hole and capable of rotating relative to the body, wherein corresponding holes for accommodating an electromagnetic pin puller, an inertia safety component, a fire propagation component and an explosion propagation component are formed in the rotor and the body; and the isolation mechanism has a large isolation termination rotation angle through optimization for the position relationship of the holes, and the isolation mechanism in a safe state and an arming state can be locked at corresponding positions through the arrangement of a multi-stage safety mechanism. According to the isolation mechanism disclosed by the invention, through the abovementioned arrangement, on one hand, the component arrangement form of the isolation mechanism is optimized, the spatial dimensions of the isolation mechanism are reduced, and the applicability of the isolation mechanism is improved; and on the other hand, the safety of the isolation mechanism can be effectively improved through two-stage safety in the safe state, and the alignment of a detonation sequence can be effectively ensured through two-stage locking in the arming state, so that the detonation efficiency is greatly increased.

The invention relates to a high-dropping-point flame-retardant steel wire rope lubricating grease composition, which is characterized by comprising the following components by weight: 70-90 parts of polyurea lubricating grease; 1-5 parts by weight of an adhesive; 1-5 parts by weight of a flame retardant; 0.1-1 part by weight of an anti-wear agent; 0.3-1.0 part by weight of an antioxidant; and 0.1-0.5 part by weight of an antirust agent, wherein the sum of the components is 100 wt%, the flame retardant is one or more of alkyl phosphate, such as tributyl phosphate, tris(2-ethylhexyl) phosphate,tris(2-chloroethyl) phosphate and tris(2,3-dichloropropyl) phosphate. The steel wire rope lubricating grease with high dropping point and flame retardancy is high in dropping point, low in high-temperature oil separation and capable of self-extinguishing lubricating grease, and even if the lubricating grease is on fire, fire propagation can be prevented within a few seconds, so that a steel wire rope is effectively lubricated, and the effect of prolonging the service life is achieved.

The invention discloses a forest fire danger state monitoring and analyzing system and method based on artificial intelligence, and belongs to the technical field of artificial intelligence. The method comprises the following steps: constructing a forest wind prediction model, predicting the wind speed and the wind direction of forest wind through the forest wind prediction model, dividing a forest into checkerboards according to the detection range of forest fire monitoring equipment, calculating the forest combustion-supporting substance content of a single checkerboard according to the vegetation distribution of the forest, and establishing a forest fire spreading speed calculation model. Different checkerboards are simulated as fire outbreak points, the fire spreading process is simulated, and a forest fire key monitoring area is found; predicting the wind power data of the forest through a time sequence prediction algorithm, and guaranteeing the specific reference value of the fire propagation simulation data; a forest fire spreading speed calculation model is established, forest fire simulation is further achieved, the key point of forest fire detection is found through forest fire simulation, manpower and material resources are saved, and fire hazard key areas are effectively checked.

The invention provides an outdoor safety type ammeter system. The outdoor safety type ammeter system includes a casing and a case cover which is hinged with the casing, wherein an accommodation chamber is concavely arranged in the casing; and an ammeter is arranged in the accommodation chamber. The outdoor safety type ammeter system also includes a temperature breaker and an extinguishing device, wherein the temperature breaker is connected with a zero line and a fire line; and the zero line and the fire line sleeve the extinguishing device. In the outdoor safety type ammeter system, when the temperature in the casing becomes higher, the temperature breaker automatically turns off the circuit to prevent spontaneous combustion of lead because of over high temperature. When the zero line and the fire line is on fire, the extinguishing device can quickly extinguish the flame to avoid fire propagation.

The invention discloses a spatial modeling analysis device and method of combustible materials. The device comprises a storage module (3), a decomposition module (2), a modeling module (4), a space division module (5), a statistics module (7) and a display module (8), wherein the storage module (3) prestores the weight and the combustion characteristic parameters of all combustible materials in a space used for containing the combustible materials; the decomposition module (2) divides the space into a plurality of subspaces; the modeling module (4) carries out three-dimensional modeling on each subspace; the space division module (5) further divides each subspace subjected to the three-dimensional modeling into a plurality of space units; the statistics module (7) calculates the heat and the toxic smoke amount, which are released in each second, of the combustible materials and the sustained combustion time of the combustible materials in each space unit and whole space; and the display module (8) displays the sustained combustion time, the released heat, the toxic smoke amount and the temperature of the combustible materials. The heat and the toxic smoke amount, which are released when the combustible materials are burnt, a change situation of surrounding space temperature along with time and a fire propagation situation can be scientifically and precisely predicted.

A battery pack includes a plurality of battery modules arranged along at least one direction, a resistor connected to an abnormal battery module that operates abnormally among the battery modules to absorb energy, an event detector provided to detect the abnormal battery module, a switch to connect or disconnect each of the battery modules to/from the resistor to selectively form a closed circuit, and a controller to receive information from the event detector and control the switch to form a current path between the abnormal battery module and the resistor.