415 results about "Open fire" patented technology

The invention provides a combustible gas leakage protection system, which is characterized in that a control module of the combustible gas leakage protection system judges whether the concentration of combustible gas is lower than a first concentration threshold value or not when receiving concentration information detected by a concentration detection module, and generates a first control instruction when the concentration of the combustible gas is not lower than the first concentration threshold value. The control module further generates a second control instruction when the combustible gas concentration is not lower than a second concentration threshold value and the flame detection module detects that no open fire exists, and generates a third control instruction when the combustible gas concentration is not lower than the second concentration threshold value and the open fire exists. And the protection module executes different protection actions according to different control instructions of the control module. According to the application, the response scheme is divided into three grades, and corresponding protection strategies are implemented according to the detection signals of different grades, so that the response sensitivity and accuracy when the combustible gas leaks can be remarkably improved.

The invention provides a shallow coal seam hidden fire source full-field monitoring and early warning method and system, and belongs to the technical field of coal spontaneous combustion fire monitoring and early warning, and the method comprises the steps: S1, obtaining thermal infrared image and visible light image data; s2, eliminating redundant thermal imaging frames and fuzzy thermal imaging frames; s3, obtaining a preliminary surface temperature field distribution map; s4, an open fire source and a suspicious area are distinguished, and positions are marked; s5, acquiring surface temperature gradient distribution and indication gas concentration data of the suspicious area, and acquiring surface temperature data and underground temperature data of the verification point, indication gas data escaping from the detection hole and radioactive radon content data; s6, establishing identification indexes of the dark fire source; s7, establishing a dark fire source grading risk standard; and S8, outputting an early warning result. According to the method, full-time, full-field and three-dimensional monitoring is realized, the accuracy and the reliability are improved, intelligent graded early warning and decision support are realized, and the environmental adaptability and the automation level are enhanced.

The invention belongs to the technical field of unmanned aerial vehicle group control, and relates to a control method of a fire extinguishing unmanned aerial vehicle group. According to the method, a dynamic fire scene thermodynamic diagram, meteorological data and a fire scene terrain model are collected, and fire scene spreading core kinetic parameters are extracted to calculate a dynamic buffer area; and then predicting meteorological data of a buffer area, generating a combustible flammability index grid map, carrying out weighted fusion on a downsampling result of the dynamic fire scene thermodynamic diagram and the two, and constructing a dynamic fire danger intensity field in a prediction period, thereby solving the problem that multi-dimensional heterogeneous data cannot be effectively integrated in the prior art, and realizing accurate prediction of the dynamic evolution trend of the fire. Meanwhile, state data of the unmanned aerial vehicle group are collected in real time, open fire areas are divided in combination with a fire danger intensity field, reachability of the unmanned aerial vehicles is evaluated, the unmanned aerial vehicle group capable of being dispatched for the second time is screened, traditional strategy defects are overcome, resource allocation is optimized, timely intervention in key areas is ensured, and the overall fire fighting effect is improved.

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

The invention discloses a flame-retardant functional diaphragm and a preparation method thereof, and relates to the technical field of lithium batteries. The flame-retardant functional diaphragm comprises a diaphragm base material and a flame-retardant ceramic coating arranged on one side of the diaphragm base material, the flame-retardant ceramic coating is obtained by coating and drying flame-retardant ceramic slurry, and the thickness of the flame-retardant ceramic coating is 1-20 microns; the flame-retardant ceramic slurry comprises the following raw materials in parts by mass: 20-55 parts of inorganic particles, 5-30 parts of a phosphorus-based flame retardant, 5-30 parts of a nitrogen-based flame retardant, 100 parts of a solvent, 0.1-1 part of a dispersing agent, 0.2-1 part of a thickening agent, 1-3 parts of a binder and 0.1-0.5 part of a wetting agent. The high-phosphorus and high-nitrogen flame retardants are introduced and compounded into a ceramic coating system, so that the problems of rapid carbonization and fragmentation after ignition of the ceramic diaphragm are solved, and meanwhile, the effects of ignition without open fire after ignition and self-extinguishing after being away from the fire can be achieved.

The invention relates to the technical field of material compositing, and discloses a polyurethane composite insulation board with a good flame retardant effect, which comprises the steps of fireproof surface layer pretreatment, flame retardant core layer preparation, reinforced substrate layer treatment, lamination molding and post-treatment, by designing a unique three-layer composite structure and adopting a multi-component synergistic flame retardant system, the flame retardant effect is good, and the flame retardant effect is good. The heat insulation board can form a multi-stage flame-retardant barrier when encountering high temperature and open fire, the flame spreading speed is slowed down, the overall fireproof safety of the material is improved, and the durability and stability of the flame-retardant effect are enhanced through the synergistic effect of all the functional layers; through surface modification treatment on the functional reinforcing phase, the interface bonding force between the functional reinforcing phase and a polyurethane matrix is improved, so that the flame retardant and the reinforcing phase are uniformly dispersed in the matrix, and the performance defect caused by agglomeration is avoided, thereby enhancing the mechanical strength and structural integrity of the material while keeping excellent thermal insulation performance.

The utility model relates to a spinning box cleaning device which comprises a cleaning device body and a recovery device, one end of the cleaning device body is communicated with an assembly chamber connector at the lower end of a spinning box, and the other end of the cleaning device body is communicated with a cleaning liquid supply device. The cleaning device body is used for leading cleaning liquid in the cleaning liquid supply device into a spinning branch pipe in a spinning box through an assembly chamber connector, one end of the recycling device is connected with a metering pump base at the upper end of the spinning box, and the other end of the recycling device is communicated with a cleaning liquid recycling box. The metering pump base is communicated with the assembly chamber connector through a spinning branch pipe, and the recycling device is used for recycling cleaning liquid in the spinning box into the cleaning liquid recycling box. Glued spinning raw materials in the pipeline are dissolved through the cleaning liquid and then cleaned, and compared with the mode that the pipeline is cleaned through open fire calcination in the prior art, the pipeline cleaning device is safer, more efficient, more convenient to operate and lower in cost, and the service life of equipment is longer.

The invention belongs to the technical field of energy storage equipment, particularly relates to a combined type energy storage cabinet and an energy storage system, and aims to solve the problems that in an existing technical scheme, only a ventilation mode is adopted for heat dissipation, a battery is difficult to stably cool, and a related fire extinguishing device is not arranged in the energy storage cabinet, so that fire is difficult to extinguish in time when the battery is on fire. According to the scheme, the energy storage cabinet comprises an energy storage cabinet body, and two door plates are symmetrically hinged to one side of an opening of the energy storage cabinet body; the plurality of partition plates are arranged in the energy storage cabinet body at equal intervals; according to the technical scheme, a plurality of batteries can be cooled in a dispersed heat exchange mode, so that the batteries can operate stably, open fire can be extinguished in time when the batteries are overheated and are on fire, and therefore, in the actual use process of the technical scheme, the battery cooling device can be used for cooling the batteries, and the service life of the batteries is prolonged. The method has good stability and reliability.

The utility model provides a smoke exhaust flow guide cover, a battery and electric equipment, and relates to the technical field of battery safety. The smoke exhaust flow guide cover comprises a cover plate, a first cover body and a second cover body. Wherein the cover plate is used for being connected with a battery pack in a sealing manner, and an anti-explosion valve port for accommodating the anti-explosion valve is formed in the cover plate; the first cover bodies are connected with the cover plate and correspond to the anti-explosion valve ports one to one, first smoke outlets are formed in the first cover bodies, and the first smoke outlets and the anti-explosion valve ports are arranged in a staggered mode; the second cover body is arranged on the side, connected with the first cover body, of the cover plate and covers the first cover body, a second smoke exhaust port is formed in the second cover body, and the second smoke exhaust port and the first smoke exhaust port are arranged in a staggered mode. By using the smoke exhaust guide cover in the battery, when the battery is in thermal runaway, the exhaust direction of smoke is changed, the exhaust distance is prolonged, the resistance is increased, and the flowing speed and temperature of the smoke are reduced, so that the smoke is not easy to generate open fire with other combustibles after being exhausted, and the damage to personnel and property is reduced.

The invention relates to the technical field of forest fire emergency disposal, in particular to a helicopter-borne forest fire automatic identifying, positioning and extinguishing method and system. The method comprises the following steps: identifying infrared suspected fire points according to meteorological conditions and a space-time weight matrix; analyzing the probability of the open fire and the smoke by using the spectral response difference of the open fire and the smoke in different wavebands; generating a high-confidence three-dimensional fire point list based on a D-S evidence theory in combination with the infrared suspected fire point, the open fire and smoke probability, the combustion intensity and the live wire intensity; constructing a multi-objective optimization model, and solving a to-be-extinguished line and a region priority list in combination with the multi-objective optimization model, fire scene topographic feature parameters, fire line spreading features and the high-confidence three-dimensional fire point list; and generating or adjusting a flight route and a fire extinguishing instruction through a model prediction control framework based on a delivery window, the high-confidence three-dimensional fire point list and the to-be-extinguished line and area priority list.

The invention discloses a brazing welding device and a brazing welding method, and the brazing welding device comprises a welding seat, a pressing piece and an induction heater. A copper terminal is placed on the welding seat; the pressing piece comprises a first pressing part used for pressing the copper terminal on the welding seat and a second pressing part used for pressing the aluminum wire on the copper terminal; the induction heater utilizes induction current to heat, only the brazing filler metal is melted in the brazing process, and the brazing filler metal is fully diffused with the aluminum wire and the copper terminal to form firm metallurgical bonding. According to the brazing welding device, induction welding is used for replacing a traditional flame welding mode, no open fire exists in the whole welding process, the risk of fire disasters is reduced, and meanwhile the vision or skin of operators cannot be injured; meanwhile, only brazing filler metal is melted in the induction welding process, the first welding piece and the second welding piece are both kept in a solid state, and the welding difficulty is reduced; the induction welding has the advantages of high heating speed, high efficiency and the like, the welding time can be shortened, the production efficiency is improved, and the production cost is reduced.

The invention provides an intelligent electric energy metering box capable of being remotely regulated and controlled, and relates to the technical field of electric energy metering, the intelligent electric energy metering box comprises an embedded assembly, a box body and a fence mechanism, a mounting cavity is formed in the embedded assembly, the box body is embedded in the mounting cavity, the side edge of the box body is attached to the inner wall of the mounting cavity, the embedded assembly is used for being embedded in a wall, and the fence mechanism is arranged in the box body. The front end of the embedded assembly is provided with a fence mechanism, the fence mechanism is connected with the top area of the embedded assembly, and the fence mechanism is used for shielding and covering the front end area of the box body. When overheating or even open fire occurs in the box body, the inner box body can be remotely controlled to move, an approximately closed structure is formed in the inner side space, and the box body can be prevented from being damaged. And finally, oxygen input is blocked through the sealing effect, the fire extinguishing purpose is achieved, the protection effect can be provided for the internal smoke sensor in the process, meanwhile, external rainwater and dust can be prevented from entering the box body, and the protection effect on internal power equipment is enhanced.

The invention discloses lithium ion energy storage battery over-temperature protection and multi-dimensional safety management and control integrated equipment, and belongs to the technical field of battery over-temperature protection. And the multiple sets of buffering mechanisms are arranged, and the multiple sets of buffering mechanisms are all arranged in the protection outer box. According to the lithium ion energy storage battery over-temperature protection and multi-dimensional safety management and control integrated equipment, through the use of the high-temperature pressure relief mechanism, when the battery is in thermal runaway and the internal pressure is suddenly increased, a pure mechanical pressure relief sealing structure is burst open, the response speed is far higher than that of an electric control system needing to be recognized by a sensor, and a high-pressure jet flow generates negative pressure when passing through a throat; the fire extinguishing dry powder is automatically sucked out from the dry powder cavity, no external instruction or power is needed in the process, seamless connection of pressure relief, namely fire extinguishing is achieved, the dry powder is violently mixed with the high-temperature jet flow in the pressure relief channel, a large amount of heat can be instantly absorbed, the temperature of the jet flow can be reduced, open fire can be directly extinguished, and fire is effectively prevented from spreading in the box.

The invention provides a camera-assisted BMS decision-making fire-fighting method, device and equipment and a medium, and the method comprises the steps: collecting a visible light image and an infrared thermal image of a battery module, and obtaining the operation data of the battery module; performing visual feature extraction on the visible light image to obtain visual features, and determining a hot spot state according to the infrared thermal image; when the visual features of the battery module are abnormal, the hot spot state is open fire out-of-control spreading and the operation data exceed a preset threshold value, performing space-time alignment processing on the visual features, the hot spot state and the operation data to obtain a space-time alignment multi-source fusion sequence; and inputting the space-time alignment multi-source fusion sequence into a pre-trained multi-modal fire risk assessment neural network model, and outputting a fire risk level. According to the method, space-time alignment and cross-modal interaction can be carried out on the visual features and BMS electrical parameters, the problem of false alarm and missing alarm caused by the fact that a single sensing dimension is prone to interference is effectively solved, and the accuracy and robustness of risk judgment are improved.

The utility model provides a fire-fighting device and energy storage equipment, the fire-fighting device is applied to a battery cell of the energy storage equipment, the fire-fighting device comprises a fire-fighting main body and a thermosensitive wire group, and the fire-fighting main body is used for spraying a fire extinguishing agent to the battery cell; the thermosensitive wire set comprises a thermosensitive agent, a containing sleeve and a fireproof sleeve, the thermosensitive agent is located in the containing sleeve, the containing sleeve is connected with the fire-fighting main body, the fireproof sleeve is arranged on the containing sleeve in a sleeving mode, and the fireproof sleeve wraps the end, away from the fire-fighting main body, of the containing sleeve; wherein a heat reduction layer is arranged between the fireproof sleeve and the accommodating sleeve, and the heat reduction layer is configured to reduce heat transferred to the thermosensitive medicament, so that the temperature of the thermosensitive medicament is below the ignition temperature before the battery cell generates open fire. The above arrangement can improve the problem that the thermosensitive lead of the fire-fighting device is ignited in advance.

The invention discloses a fire risk assessment method, device and equipment and a storage medium, and relates to the technical field of data processing, and the fire risk assessment method comprises the steps: collecting an environment image of a to-be-monitored region through a camera disposed in a preset region; performing target detection on the environment image to obtain entity information in the environment image; comparing the entity information with a preset fire hazard feature to obtain a comparison result; determining a fire hazard existing in the to-be-monitored area based on the comparison result; and determining a fire risk assessment result according to the fire hazard. According to the method, the entity information in the environment image is compared with the fire hazard characteristics, so that the fire risk assessment result is obtained, and compared with an existing mode of determining whether a fire exists or not through temperature identification and open fire identification, early warning can be carried out in time before the fire occurs, and the fire early warning efficiency is improved.

The utility model relates to the technical field of insulation board, and disclose a double -faced composite fireproof renewable insulation board, including the board body, the board body is sequentially provided with the heat preservation layer from inside to outside. The double -faced composite fireproof renewable insulation board, when the high temperature or open fire appears outside, the first fireproof layer and the second fireproof layer of both sides give priority to play the fire -resistant barrier effect, rely on material high -temperature -resistant, non -combustion characteristics, block flame spread and high -temperature transmission, the heat insulation layer in the middle, with the help of the closed bubble structure evenly distributed inside, reduce air convection and heat conduction, realize heat barrier, maintain the temperature difference of both sides of the board body to reach the heat preservation effect, the reinforcing layer is connected closely with the heat preservation layer and the second fireproof layer through epoxy resin adhesive, both strengthen the bonding strength of each layer, prevent interlayer peeling, and improve the overall structural stability of the board body, avoid its deformation, cracking when stressed or temperature changes.

The invention provides a restaurant exhaust air recovery type kitchen ventilation system and method based on air volume self-adaption. The system comprises a restaurant ventilation subsystem, a kitchen non-open fire area ventilation subsystem and an air path switching controller. A restaurant main exhaust pipe of the restaurant exhaust fan is connected with a restaurant first exhaust branch pipe and a restaurant second exhaust branch pipe, the restaurant first exhaust branch pipe is communicated into a public walkway of a kitchen non-open fire area, a second air valve is arranged on the restaurant first exhaust branch pipe, the restaurant second exhaust branch pipe is communicated to the outside, and a third air valve is arranged on the restaurant second exhaust branch pipe; the kitchen non-open-fire area fresh air fan and the kitchen non-open-fire area indoor fresh air pipe are communicated with the kitchen non-open-fire area, a first air valve is arranged on the kitchen non-open-fire area indoor fresh air pipe, and the first air valve, the second air valve, the third air valve and the restaurant fresh air fan are all connected with the air path switching controller. The invention relates to the technical field of building ventilation and air conditioning, and can solve the problems of energy waste and uneconomical system operation in the prior art.

The invention relates to the technical field of coal drying, in particular to central pipe heating coal upgrading and drying equipment. The coal dryer comprises a cylinder, the two ends of the cylinder are connected with a front-end extension pipe and a rear-end extension pipe respectively, a drying cavity is formed in the cylinder, a heating structure is arranged in the drying cavity, the section of the heating structure is circular, the heating structure is of a circulating pipeline structure, and low-temperature airflow is introduced into a pipeline and used for achieving non-contact low-temperature drying operation on coal. A drying mode of circulating airflow between the central pipeline and the 18 seamless steel pipes is adopted, so that a heat source is not in direct contact with coal, no open fire is generated in the whole process, and the hidden danger of explosion caused by contact between coal dust and the open fire is eliminated fundamentally; and meanwhile, the problems of local overheating, coal property change and the like caused by direct contact in traditional high-temperature drying are solved, and the safety of the drying process is improved.

The invention discloses a smog gas sample generation and storage device for testing an underground coal mine smog sensor, the smog gas sample generation and storage device comprises a storage cylinder, a smog adjusting unit and a smog generation unit, the smog adjusting unit is arranged in the storage cylinder, and the smog adjusting unit is composed of a movable adjusting piston and an adjusting structure; the adjusting piston is arranged in an inner cavity of the storage barrel, the adjusting structure is used for adjusting the position of the adjusting piston, pre-storage and quantitative taking of a smoke sample can be achieved through cooperation of the storage barrel and the adjusting piston, and therefore the underground open fire danger is avoided; meanwhile, the adjusting piston is finely controlled by the control assembly, so that the smoke is stably output at a constant speed, and the accuracy of the calibration concentration is ensured; and the anti-deposition assembly is automatically started when the smoke is output through the linkage driving assembly, so that the smoke particles are effectively prevented from settling at the bottom of the storage cylinder, and the uniformity and stability of the concentration of the gas sample are ensured.

The invention discloses a vehicle-mounted flame-retardant optical cable and a preparation method thereof, and belongs to the technical field of optical communication, the vehicle-mounted flame-retardant optical cable comprises an optical unit and at least one reinforcer, the surface of the reinforcer is coated with a flame-retardant coating, and the flame-retardant coating at least comprises ammonium octamolybdate and a smoke suppressant; and the outer sheath wraps the periphery of the stranded structure of the plurality of reinforcing members and the optical unit. According to the vehicle-mounted flame-retardant optical cable, a compact carbon layer structure is formed through ammonium octamolybdate under high temperature and open fire, the reinforcer is prevented from making contact with external air, fire is prevented from spreading along the reinforcer, and the flame-retardant effect is achieved; meanwhile, the smoke suppressant can restrain the smoke generation amount, looseness of the compact carbon layer structure caused by smoke is avoided, and secondary combustion caused by falling of the compact carbon layer is avoided. According to the vehicle-mounted flame-retardant optical cable provided by the invention, the reinforcer in the optical cable is replaced by the flame-retardant structure, so that the situation that the optical cable is continuously burnt and damaged along the reinforcer is avoided, and the burning of the vehicle-mounted flame-retardant optical cable is slowed down.

The application discloses an indoor fire source loading method for simulating real fire in an underground tunnel, S1: processing a test rock block in the shape of a cuboid; S2: selecting rock blocks as bases and placing the test rock block above the two bases with a distance between the two bases, so as to form a structure similar to a "pin" character; S3: setting a heating groove in the space between the two bases and the bottom surface of the test rock block; S4: spraying fireproof materials at the intersection gap between the bottom of the left and right side walls of the test rock block and the two bases, and at the intersection gap between the bottom of the front and back wall surfaces of the test rock block and the heating groove; S5: placing combustion materials in the heating groove and performing open fire source damage loading; and S6: extinguishing the open fire source and performing post-processing on the test rock block. The method can effectively realize single-side open fire loading on the rock block in a laboratory scale, is closer to the actual situation that the single-side wall of surrounding rock is affected by fire, and is more reasonable and intuitive for simulating and studying rock open fire damage in real fire in an underground tunnel.

The utility model discloses an explosion suppression type hot start fire extinguishing device which comprises a shell, an aerosol generating agent and a thermal initiator, the aerosol generating agent is filled in the shell, one end of the thermal initiator is connected to the central position of the aerosol generating agent, and the other end of the thermal initiator is arranged along the inner wall of the shell. And the ignition cartridge bag is connected to the central position of the aerosol generating agent in the shell and is connected with the thermal initiator. And the thermal initiator is a thermosensitive wire. The thermal initiator is arranged in the shell, so that the dangerous situation that a traditional thermal initiator is exposed outside the device and is mistakenly started in the processes of manufacturing, transportation, installation and the like is avoided; more importantly, the phenomenon of combustion explosion caused by open fire generated by the device when the device is applied to a combustible gas storage cabinet or a battery box or other scenes where explosive environments are prone to being generated is avoided.

The utility model discloses a temperature sensing fire source detector which comprises a temperature sensing structure used for detecting environment temperature and a pressure storage structure used for storing high-pressure gas, the temperature sensing structure is arranged on a trigger assembly, and a puncture assembly is arranged between the trigger assembly and the pressure storage structure. The trigger assembly moves in the trigger direction to drive the puncture assembly to puncture the pressure storage structure so as to release high-pressure gas into the gas outlet channel. The pressure storage structure is arranged for storing the high-pressure inert gas, when the environment temperature is too high, the temperature sensing structure deforms and does not limit the triggering assembly any more, the triggering assembly moves in the triggering direction and drives the puncture assembly to get close to the pressure storage structure and puncture the pressure storage structure, and the high-pressure inert gas is released to the gas outlet channel to be sprayed out; and the gas enters an external pressure trigger switch or a fire extinguishing system trigger pipeline to drive the starting of the whole fire extinguishing system, so that the quick response is realized, the smoke interference is avoided, the fire does not need to be fired on site, and the fire extinguishing efficiency is improved.

The application discloses a fireproof cable with a stepped temperature reduction structure and belongs to the technical field of cables. The fireproof cable comprises a protective layer, a plurality of cable cores are wrapped in the protective layer, an inner filling cavity is arranged between the protective layer and the cable cores, the inner filling cavity is filled with inner flame-retardant filling, the cable core comprises a lead core, the lead core is wrapped with insulating rubber on the outside, and the lead core is further wrapped with a high-temperature-resistant rubber layer on the outside. The lead core is protected through the cooperation of the flame-retardant insulating sleeve, the outer flame-retardant filling, the shielding layer, the inner flame-retardant filling and the steel wire. The flame is blocked layer by layer through the above manner, the flame retardance of the fireproof cable is greatly increased, the reliability of the cable is improved, and the cable can still perform power transmission when being burned by open fire.

The negative pressure fire insulation accident oil collecting device with the oil blocking function is used for being arranged on the side of a movable transformer and comprises a modular oil tank, and an oil inlet is formed in the top of the modular oil tank; the oil baffle plate is mounted at the oil inlet, and the plate surface of the oil baffle plate is arranged towards the mobile transformer; the fire insulation interlayer is fixed in the modularized oil tank and divides an inner cavity of the modularized oil tank into an upper-layer fire insulation cavity and a lower-layer oil storage cavity; the negative pressure mechanism communicates with the oil storage cavity and is used for forming negative pressure in the oil storage cavity and diluting oxygen in the oil tank, the requirement for rapid deployment of the mobile transformer substation is met through the design of the modular oil tank, and the problems that a traditional civil engineering oil pool cannot move and is long in period are solved. The oil baffle plate effectively blocks and guides splashed high-temperature oil liquid, so that the problem that fire behavior is expanded due to the fact that the oil liquid spreads everywhere during an accident is solved; the fire insulation interlayer allows oil to pass through but can isolate open fire outside, and the risk of secondary combustion or explosion caused by the fact that flames flow into the oil storage cavity along with oil is reduced.

The application discloses a linkage type air purification system control method, which is suitable for general control or regulation systems, functional units of the systems, and monitoring or testing device technology fields of the systems or units. The method in the specification is used for cascading a fresh air system and a fire control system in a building, combining the two on the basis of respective functions, and realizing fire control and prevention of the building to which the two belong under the management of a general control device. The method can effectively locate a fire position, and take measures to avoid fire spreading to other rooms in a fire lasting process. The method can also discharge smoke generated by combustion to the outside on the basis of the determined fire position, which is beneficial to assisting personnel at the fire site to escape. The method in the specification can consider smoke spreading and open fire spreading respectively to formulate linkage strategies beneficial to user escape, and can avoid increasing fire loss.

The invention provides an anti-spilling flow guide device of electric energy storage equipment. The anti-spilling flow guide device comprises a shell and a flow guide device, wherein an inner cavity is formed in the shell for accommodating the secondary battery, and the shell is provided with an exhaust port for communicating the inner cavity with the outside of the shell; the fluid director is arranged in the inner cavity of the shell, at least one part of the fluid director and the shell are arranged in a spaced mode, a fluid director channel extending towards the exhaust port is formed between the fluid director and the inner side wall of the shell, and the fluid director is provided with at least one fluid director blade arranged on one side corresponding to the positive electrode of the secondary battery; the guide vane is provided with an oblique angle for guiding flame or high-temperature gas generated by the secondary battery into the guide channel, so that the flame or the high-temperature gas is guided to the exhaust port and then discharged out of the shell; according to the invention, flames and high-temperature gas generated by thermal runaway of the secondary battery can be guided to the exhaust port, so that further damage caused by open fire is avoided.

The utility model relates to the technical field of cable manufacturing, and discloses a double-layer co-extrusion sheath cable which comprises a conductor, a conductor shielding layer, a crosslinked polyethylene insulating layer, an insulation shielding layer, a semi-conductive water-blocking tape, a soft round copper wire, a soft pure copper tape, a non-conductive water-blocking tape and a CPP tape from inside to outside. According to the double-layer co-extrusion sheath cable, the inner sheath layer and the outer sheath layer are arranged, the inner sheath layer is made of the flame-retardant PVC material with the oxygen index larger than or equal to 32%, a carbonization layer can be rapidly formed under the condition of high temperature or open fire, oxygen is effectively isolated, flame-retardant gas is released, and flame is prevented from spreading towards the interior of the cable, and the outer sheath layer is made of the high-hardness MDPE material. Although the flame retardance is general, the flame diffusion speed can be slowed down, and through the synergistic effect with the inner layer PVC, the overall flame retardant grade of the cable reaches the V-0 grade (UL 94 standard), the high-flame-retardant scene requirement is met, and the flame retardant property is further remarkably improved.