83results about How to "Guaranteed fire extinguishing performance" patented technology

The invention discloses a superfine dry powder cold aerosol automatic fire-extinguishing system which comprises a fire extinguisher, a driving gas delivery conduit, spraying devices and a control device, wherein the fire extinguisher comprises a gas storage device, a control valve assembly and a connecting pipeline, and the gas storage device is connected to the input end of the driving gas delivery conduit through the control valve and the connecting pipeline; a control valve assembly is controlled to open and close by the control device; the spraying devices are distributed in the protected area according to the engineering requirements; each spraying device is provided with a powder storage tank; the powder storage tank is connected to the output end of the driving gas delivery conduit through a first control valve; the powder storage tank is provided with a spraying outlet which is provided with a second control valve; and the first and second control valves are controlled to open or close in a pneumatic or electric mode. Compared with the prior art, the fire-extinguishing system of the invention has the advantages of simple structure, favorable fire extinguishing effect, low engineering investment and low maintenance expense.

The invention discloses a method for controlling the particle size distribution and content of an ABC powder extinguishing agent, which comprises the following steps of: (1) firstly, crushing diammonium phosphate with an LF concealed and stepped super micro mill and controlling the 'particle size distribution' of the diammonium phosphate; secondly, controlling the 'particle size distribution' of other materials in 0.125 millimeter, 0.063 millimeter and 0.040 millimeter sieves and an underpan; and finally, controlling the 'particle size distribution' and 'content' of the product. The ABC powder extinguishing agent prepared by the method can effectively extinguish class A, B and C fires and electric equipment fires, has a class A, B, C fire extinguishing efficiency which is 1 to 3 times of that of the prior ABC powder extinguishing agent, saves raw material cost, improves extinguishing efficiency and can match products made in advanced countries across the world in performance.

The invention discloses an indoor dry powder intelligent fire extinguishing system which comprises a fixed frame, wherein the fixed frame is fixedly arranged indoors; a lifting motor is arranged on the fixed frame, and the output end of the lifting motor is connected with a lifting gear by a gear transmission pair; the lifting gear is connected with a lifting screw rod which is supported in the fixed frame by a bearing; a lifting frame which is matched with threads of the lifting screw rod is sheathed on the lifting screw rod, and a rotary disc which is controlled by a rotary motor is arranged on the lower end of the lifting frame; an infrared thermometer, an infrared distancer and a telescopic nozzle are arranged on the rotary disc, wherein the telescopic nozzle is communicated with a dry powder container through a pipeline, and the dry powder container is communicated with a high-pressure nitrogen storage tank; a first electromagnetic valve which is controlled by a PLC (Programmable Logic Controller) is arranged between the telescopic nozzle and the dry powder container; and the lifting motor, the rotary motor, the infrared thermometer, the infrared distancer, the telescopic nozzle and the first electromagnetic valve are uniformly controlled by the PLC.

The invention discloses a movable fire extinguishing device and relates to the technical field of fire extinguishing equipment. The movable fire extinguishing device comprises a base; a tank body is fixedly connected to the top of the base; a water tank is fixedly connected to the bottom of the inner wall of the tank body; a water injection funnel is arranged on the top of the tank body in a penetrating mode, and the bottom of the water injection funnel communicates with the water tank; a water pump is fixedly connected to the bottom of the inner wall of the water tank; a sliding frame is fixedly connected to the bottom of the inner wall of the tank body, and an electric motor is also fixedly connected to the bottom of the inner wall of the tank body; a screw shaft is fixedly connected toan output shaft of the electric motor; and a moving plate is in threaded connection with the surface of the screw shaft. The movable fire extinguishing device integrates the three movable fire extinguishing ways of cooling fire extinguishing, air isolating fire extinguishing and burning substance blockade fire extinguishing, and the fire extinguishing ways are complete; and the movable fire extinguishing device has the functions of automatic control and all-round fire extinguishing and is quite easy and convenient to use, powerful in fire extinguishing capacity, convenient to move and quite flexible in usage.

The invention discloses a fire-extinguishing system special for a wind driven generator cabin. The system comprises a gas fire-extinguishing system, a wind driven generator cabin tuyere emergency closing system and an information and control system; the gas fire-extinguishing system comprises a fire-fighting nozzle and a temperature controlled fire-extinguishing agent heat preservation storage device; the wind driven generator cabin tuyere emergency closing system comprises a filling device, a soft capsule communicated with the filling device through a filling pipeline and a control device for controlling opening and closing of the filling device; and the information and control system comprises a wind driven generator cabin field controller and a remote after-sale service system. The system integrates fire detection, automatic start, automatic release, information acquisition and feedback, has an automatic constant temperature function, is accurate and quick in response, low in false alarm rate, convenient to arrange and reliable in structure, completely does not depend on power for starting, can effectively adapt to the severe working environment of a wind driven generator unit, and can quickly realize automatic fire extinguishment and reduce the loss to minimum once a fire happens in the generator cabin.

The invention discloses a warehouse capable of automatic fire suppression. The warehouse capable of automatic fire suppression comprises a plurality of base plates, a film, a sand layer and a support, wherein the base plate is provided with a plurality of through holes, the film is covered on the base plate, the sand layer is placed above the film and the support is used for supporting the base plate. The warehouse disclosed by the invention uses sand as the tool for fire suppression, and is simple in structure, high in sensitivity, accurate in location, reliable in fire suppression effect, strong in practicability, high in flexibility and very broad in application prospect.

The invention discloses a safety fireproof cooling wiring conduit. The safety fireproof cooling wiring conduit is characterized by comprising conduits a, a conduit b and a connecting plug, wherein the connecting plug is connected with the conduits a and the conduit b; each of the conduits a and the conduit b comprises a conduit body and a protective cooling layer; each protective cooling layer is arranged on an outer ring of each conduit body; a plurality of wiring fireproof boxes are also connected between the conduits a when the conduits a are connected in parallel; each wiring fireproof box comprises a nitrogen tank and an air faucet; each air faucet is connected with the corresponding nitrogen tank; and an electromagnetic valve for controlling each air faucet to be closed is also arranged on each nitrogen tank. The safety fireproof cooling wiring conduit is simple in structure; and heat generated in the electrifying process of an electric wire in the wiring conduit can be emitted, so that the damage to the electric wire caused by heat accumulation and a fire caused by the heat accumulation are avoided. A blackdamp is generated in the overall conduit in the fire, so that the fire is prevented from spreading to the outside of the conduit; and a relatively big fire is further prevented.

The invention relates to the technical field of the fire protection projects, and provides an indoor fire protection system for solving the problem that the timeliness of fire fighting is lowered. According to the technical scheme, indoor architecture comprises a roof, containing holes are formed concavely in the roof, a fire-proofing comprises a fire protection water pipe and a plurality of fireprotection sprinklers which communicates with the fire protection water pipe and are arranged in the containing holes, a coating ejection plate is coated on the ejection plate to close a thermal melting and thermal conducting layers of the containing holes, the fire protection sprinklers are thermal melting sprinklers, thermal melting materials of the fire protection sprinklers are connected withthermal conducting members which are connected with the thermal melting and thermal conducting layers, and the connecting positions of the thermal conducting members and the thermal melting and thermal conducting layers are arranged on the port parts of the containing holes. By thermal conducting of the thermal conducting members through the cooperation of the thermal melting and thermal conducting layers, temperature of a fire place is subjected to be more quickly conveyed to the port parts of the containing holes of the fire protection sprinklers which are connected with the thermal conducting members so that water sprinkling and the fire fighting can be conducted, the characteristic that the fire protection sprinklers have a large spray range is fully used, the fire protection sprinklers which are inside a certain range of the fire place can be subjected to be quickly started, and the timeliness of the fire fighting is subjected to be greater.

The embodiment of the invention discloses a fire extinguishing protection power distribution cabinet. The cabinet comprises a cabinet body, a power distribution cabinet main board is fixed on a mounting plate; the power distribution cabinet main board is provided with a first connecting plug. A supporting plate is arranged opposite to the mounting plate; a mounting cavity is formed between the supporting plate and the mounting plate; a sliding groove mechanism is arranged between the supporting plate and the mounting plate; a sliding seat is arranged in the sliding groove mechanism; a mountingbox is arranged on the sliding seat; a door opening-closing mechanism is arranged at a front end of the mounting box; a protective main board is arranged in the mounting box, a second connecting plugis arranged on the protective main board; the supporting plate is further provided with an air bag and a driving mechanism, inert gas is stored in the air bag, the air bag abuts against a rear end ofthe mounting box and is connected with a first control valve through a first air supply pipe, the first control valve is connected with a sand blasting device, the sand blasting device is fixed to anouter wall of the mounting box and faces the power distribution cabinet main board, and the driving mechanism is in transmission connection with the rear end of the mounting box. Inert gas can be sprayed outwards through the air bag, sand can be sprayed outwards through the sand spraying device, fire extinguishing is achieved, and the fire extinguishing speed and effect are improved.

The invention discloses a fire extinguishing device for high-voltage equipment. The fire extinguishing device comprises a high-voltage switch cabinet body, an adjustment fan group, a fan blade controldevice and injection heads, wherein a cooling plate group comprises a cooling frame, an electric fan support plate and an electric fan, the fan blade control device comprises a driving support, a temperature sensing device support seat and a temperature sensing device, the temperature sensing device comprises a temperature sensing tank, a top rod, a piston and a heat preservation layer, two fireextinguishing tanks are arranged above the high-voltage switch cabinet body and in a fire extinguishing device placement cavity, and the injection heads are connected with lower ends of the fire extinguishing tank. The fire extinguishing device placement cavity is formed in an upper end of the high-voltage switch cabinet, the fire extinguishing tank can be used for injecting CO2 into the high-voltage switch cabinet body when a fire is generated to achieve automatic fire extinguishing, and the fire extinguishing device is relatively safe; and the adjustment fan group can be closed under controlof the fan blade control device, oxygen containing content of the high-voltage switch cabinet is reduced, and combustion is effectively suppressed.

The invention relates to a battery component for new energy vehicles. The battery component comprises a shell, a plurality of cells placed in the shell, division elements arranged in the shell for dividing the hollow cavity into a plurality of sub-cavities, a battery upper cover, a heat dissipation component and a control circuit board, wherein the plurality of sub-cavities are horizontally arranged in rows, longitudinally arranged in columns or longitudinally arranged in rows; the battery component further comprises a liner located in each sub-cavity; the electric cores are correspondingly arranged in the liners; accommodation spaces communicating with one another are formed in the division elements; the battery component further comprises a fire extinguishing agent fills the accommodation spaces; the heat dissipation component comprises cooling fins and heat conduction elements; and the control circuit board separates the upper surfaces of the heat conduction elements from the lower surfaces of the cooling fins. The battery component provided by the invention can comprehensively protect each electric core and increase the maximum usage amount of the fire extinguishing agent, and meanwhile, the electric cores are reasonably distributed to reduce the volume of the battery component. In addition, the electric cores and the control circuit board can be cooled in time, thereby greatly improving the safety level of the vehicles.

The invention belongs to the field of fire-fighting fire extinguishing apparatus and especially relates to a parallel composite tank for fire extinguishing of large-scale equipment. The parallel composite tank comprises at least two powder storage tanks, which are for storing, atomizing and mixing dry powder and are in a same horizontal line; an upper air inlet and a lower air inlet are arranged on the top and the bottom of each powder storage tank; a pressure sensor for detecting pressure in each tank is arranged on the top of each powder storage tank; an atomizing device for loosening and atomizing the dry powder is arranged in each powder storage tank; the lower air inlet is connected with the atomizing device; a powder outlet is arranged on a side wall of each powder storage tank; and powder outlets of the at least two powder storage tanks are connected with a dry powder pipeline centralized controller through a connecting pipe. According to the invention, a plurality of powder storage tanks are connected through the dry powder pipeline controller, so as to start different numbers of powder storage tanks, according to fire behavior, to guarantee the amount of dry powder needed by fire extinguishing.

The invention discloses a fire source positioning and fire extinguishing control method for a fire-fighting robot. Two thermal imaging module cameras are mounted at the top of the fire-fighting robot at equal height, a water gun is mounted on one side of the fire-fighting robot, and one thermal imaging module camera is mounted on the water gun. According to the method, fire source identification is carried out based on the pixel points, and compared with image identification or target detection, a fire source identification speed is higher; after a fire source is identified, fire source coarse positioning is performed according to the thermal imaging module cameras on the top of the fire-fighting robot, and then fire source accurate positioning is performed according to the thermal imaging module camera on the water gun, so that the accuracy of fire source positioning is ensured; and finally, after the fire source is accurately positioned, the fire source is adjusted to be in the middle lower position in a corresponding thermal imaging image of the water gun by considering an actual water spraying path of the water gun, so that the actual fire extinguishing effect is guaranteed.

A composite fire extinguishing bomb and a method of using the same are disclosed. The composite fire extinguishing bomb includes: a first accommodating cavity used for accommodating a dry powder extinguishing agent; a second accommodating cavity used for accommodating a water-based extinguishing agent and isolated from the first accommodating cavity; and a control mechanism connected with first accommodating cavity and the second accommodating cavity, and configured to open the first and second accommodating cavities one after another to spray the extinguishing agent towards the fire. By beinginstructed to spray the dry powder extinguishing agent and the water-based extinguishing agent to the fire in sequence, the composite fire extinguishing bomb solves the problems that an existing extinguishing bomb has a poor extinguishing capability and cannot meet a high extinguishing requirement.

The invention relates to the field of fire extinguishing materials, in particular to a gel fire extinguishing material, a fire extinguishing material and a blocking agent. The gel fire extinguishing material is prepared from a water glass compound which accounts for 13-20% of the mass of the gel fire extinguishing material, a coagulant which accounts for 3-15% of the mass of the gel fire extinguishing material, a flocculant which accounts for 2-3% of the mass of the gel fire extinguishing material, and the balance of a blending agent. The fire extinguishing material can be stably spliced on basal bodies such as a coal mine, is difficult to fall off and fracture, and generates no harmful gas in the process of fire extinguishing.

The invention discloses a louver control system of a wind power generation unit. The system is characterized by comprising a louver controller, a louver driving device and a louver, wherein the louver driving device is connected with the louver which is arranged at a ventilation opening of a cabin, the louver controller is connected with the louver driving device, and the louver controller is connected with an alarming signal of an automatic fire extinguishing system of a fan, and is also connected with a signal of a temperature sensor in the cabin. The system has the advantages that after a fire is determined by the automatic fire extinguishing system, the louver control system can timely control the closing of the louver at the ventilation opening of the cabin, and a sealed environment is formed in the cabin, so the fire is favorably extinguished; on the premise of no fire and normal running of the power generation unit, the louver control system can control the opening or closing of the louver at the ventilation opening of the cabin at certain temperature value according to the temperature which is obtained by the temperature sensor in the cabin, so the temperature is automatically adjusted.

The invention provides a power cable trench fire prevention device. The power cable trench fire prevention device is arranged in a cable trench. The power cable trench fire prevention device comprisesa plurality of brackets arranged at the bottom of the cable trench and used for accommodating cable joints. Each bracket is of a U-shaped structure with an upward opening. A sand storage box is arranged in the position, over each bracket, of the top of the cable trench. The sand storage boxes store fine dry sand. A sand outlet pipe extends vertically downwards from the bottom of each sand storagebox. The bottom of each sand outlet pipe is provided with a sand outlet located above the top opening of the corresponding bracket. A sealing cap is arranged at each sand outlet. One end of each sealing cap is hinged to the corresponding sand outlet pipe. The other end of each sealing cap and the corresponding sand outlet pipe are provided with a matched lock ring. A temperature sensing cable memory alloy wire used for tightening the lock rings and being capable of being fused at high temperature are wound around the lock rings. The power cable trench fire prevention device has the beneficialeffects of being simple in structure, good in fire extinguishing effect, low in cost, capable of maintaining the fire extinguishing effect for a long time and free of limitation of the effective time, saving the cost and facilitating management.

The invention provides a diesel locomotive medium-pressure pump set type water mist automatic fire extinguishing method and system. The interior of a diesel locomotive is divided into a plurality of fire extinguishing areas; each area is provided with a plurality of water mist spray nozzles, and a water supply unit supplies fire fighting water within the pressure range of 1.2-1.8 MPa; a diesel locomotive-mounted accumulator supplies electricity to the water supply unit; and certain amount of water mist additives which can form a water film and an emulsion layer on the surface of liquid fuel are added in the fire fighting water. According to the automatic fire extinguishing method and system, the medium-pressure water mist fire extinguishing technology is adopted, the water mist droplet size is controlled to be mainly concentrated within the range of 150-300 [mu]m, the momentum and penetration force of mist droplets are improved, and the fire extinguishing efficiency is guaranteed; the accumulator at the bottom of the diesel locomotive is directly utilized to supply the electricity, so that the fire extinguishing method and system are not affected by power failure inside the diesel locomotive; and the water mist additives with the quick covering and efficient emulsification effects are adopted, the oil surface can be cooled, fuel evaporation is inhibited, and the water film and the emulsion layer can be quickly formed on the oil surface, so that the fuel is isolated from air, fire extinguishing is achieved, and reburning is prevented.

The invention belongs to the firefighting field, and particularly relates to a dry powder injection system and a fire fighting truck. The dry powder injection system comprises a dry powder fluidization tank, a high-pressure gas source, a dry powder injection device and a blowing-assisting device, wherein the high-pressure gas source can communicate with the dry powder fluidization tank in a pressure-adjustable mode; the dry powder injection device communicates with the dry powder fluidization tank for injecting dry powder gas flow subjected to fluidization treatment; and the blowing-assistingdevice can guide blowing-assisting gas flow with set pressure to the dry powder injection device, so that set injection pressure which meets the requirements of the dry powder injection device is met.Based on the technical scheme, the embodiment of the invention at least can solve the problem that blowing-feeding pressure of jacking a dry powder fire extinguishing system of the fire fighting truck is insufficient.

The invention belongs to the field of dry powder extinguishing agents, and relates to an ammonium phosphate salt dry powder extinguishing agent and a preparation method thereof. The ammonium phosphate salt dry powder extinguishing agent is prepared from the following raw materials in parts by weight: 70 to 75 parts of ammonium dihydrogen phosphate; 15 to 20 parts of ammonium sulfate; 1 to 5 parts of white carbon black; 1 to 3 parts of silicone oil; 1 to 3 parts of water; and 1 to 20 parts of filler. The particle size D90 of 50-60% of ammonium dihydrogen phosphate is 10-15 [mu]m, the particle size D90 of the remaining ammonium dihydrogen phosphate is 80-100 [mu]m, and the particle size D90 of ammonium sulfate is 80-100 [mu]m. The dry powder extinguishing agent has excellent fire extinguishing performance, the overall bulk density of the extinguishing agent can be increased easily, and the situation that a fire extinguisher and a fire extinguishing system are difficult to fill can be effectively avoided.

The invention discloses a green biological inhibition fire preventing and extinguishing material which comprises, by weight, 60-100 parts of water, 8-20 parts of aloe extracts, 10-20 parts of basic reagents and 10-20 parts of prepared reagents. The basic reagents include acetone, potassium iodide, potassium bromide, potassium peroxodisulfate and N-isopropylacrylamide, and the prepared reagents include sodium bicarbonate, polydimethylsiloxane, anhydrous sodium sulfite and acrylic acid. A pH (potential of hydrogen) of the biological inhibition fire preventing and extinguishing material is 7-7.3.The invention further discloses a preparation method of the biological inhibition fire preventing and extinguishing material. The method includes the steps: uniformly mixing the aloe extracts and water; sequentially adding the basic reagents and the prepared reagents; adjusting pH and standing. Penetrability and diffusivity of the biological inhibition fire preventing and extinguishing material are improved, fire extinguishing performance is enhanced, and the material is green and environmentally friendly. According to the method, raw materials are uniformly mixed step by step to prepare thebiological inhibition fire preventing and extinguishing material, and the fire extinguishing performance of the material is further enhanced.

A powder drive type fire extinguishing cannon comprises a powder containing box, a cannon pipe and a main pressure source; the main pressure source pressurizes a cannon pipe from the cannon tail of the cannon pipe, the powder containing box is fixed to the peripheral face of the cannon pipe, the powder containing box comprises an auxiliary pressurizing pipe, a box body, a flow control plate and a steering engine, the auxiliary pressurizing pipe is communicated with the top of the box body, the box body is communicated with the cannon pipe, the connecting position of the box body and the cannon pipe is a flow combining fork, the flow control plate partitions a channel for communicating the box body with the cannon pipe, and the steering engine controls the flow control plate. Powder fire extinguishing agents can be continuously sprayed out, and the beneficial effects of being small in recoil and small in weight are achieved.

The invention discloses an automatic fire extinguishing system for a server. A PCB is provided with a smoke sensor, a fan module comprises a plurality of groups of fans, a plurality of storage tanks are formed in a closed space defined by a shell, an enclosure and an inner ring, and a fire extinguishing material is arranged in the storage tanks; a blowing opening is formed in one side of a rotating disc, a blowing pipe is arranged outside the rotating shaft in a sleeving mode, a plurality of communicating pipes are connected to the blowing pipe in a penetrating mode, and the other ends of thecommunicating pipes are communicated with the storage tanks. According to the automatic fire extinguishing system, the smoke sensor is arranged at an air outlet of the case, the fire extinguishing material is in the storage tanks, when the smoke sensor detects that smoke in the system is generated, the signal is transmitted to the BMC, the BMC controls the electromagnetic valve on the communicating pipe to be opened after receiving the smoke sensor signal, the fire extinguishing material is dispersed inside the system under the action of the air flow through the blowing opening, the fire extinguishing requirement is met, further spreading of fire is avoided, and further loss of personnel and property is avoided.

The invention discloses a perfluorohexanone fire extinguishing device. The perfluorohexanone fire extinguishing device comprises a base and supporting legs arranged on the two sides of the lower end of the base, rolling wheels are arranged at the lower ends of the supporting legs, a storage tank used for storing perfluorohexanone is arranged above the base, a supporting assembly used for supporting the storage tank is arranged at the upper end of the base, a pressure adjusting assembly used for adjusting the internal pressure of the storage tank is arranged on the storage tank, the pressure adjusting assembly adjusts the internal pressure of the storage tank so as to ensure that perfluorohexone has enough injection power, meanwhile, the problem that the pressure of perfluorohexone is large due to the external temperature is solved, and a discharging port is formed in the lower right side of the storage tank. The perfluorohexanone fire extinguishing device is designed for the defects of an existing device, and the perfluorohexanone is adopted for extinguishing a fire, so that damage to electronic equipment is reduced while the fire extinguishing effect is improved; and the position can be adjusted according to needs, fire extinguishing can be conducted on different positions conveniently, position adjusting pieces are arranged, the spraying position and angle can be adjusted, and fire extinguishing is more accurate.

The invention discloses a fire extinguishing robot for a valve hall and a valve hall fire extinguishing system. The fire extinguishing robot for the valve hall comprises a fire extinguishing robot body and a cable storage mechanism, wherein the fire extinguishing robot body is preset in the valve hall and comprises a walking mechanism, a fire extinguishing gun, a communication mechanism and a control mechanism; the cable storage mechanism comprises a base, a rotating table which is driven and rotationally arranged on the base in the horizontal direction, and a cable automatic reel and / or a fire extinguishing agent pipe automatic reel arranged on the rotating table; the cable automatic reel and / or the fire extinguishing agent pipe automatic reel are / is connected with the fire extinguishingrobot body; and the fire extinguishing agent pipe automatic reel is driven to automatically store a water pipe, and / or the cable automatic reel is driven to automatically store a cable. By the cable storage mechanism matched with the fire extinguishing robot body, the problems can be effectively solved that in the prior art, a fire extinguishing agent of a fire extinguishing robot is insufficientin supply, the fire extinguishing capacity of the fire extinguishing robot is insufficient, and the valve hall fire extinguishing requirement cannot be met.

The invention provides a connection type temperature control cell coating inhibition ball for forest and grassland fire prevention and a use method, and is suitable for forest or grassland fire prevention and extinguishment. The connection type temperature control cell coating inhibition ball comprises flame-retardant pellets and aramid fibers, each flame-retardant pellet is composed of a coating shell and an internal inhibition liquid, the coating shell comprises a phase-change material and a reinforcement material, the phase-change material and the reinforcement material can be converted into a liquid state from a solid state within a certain temperature range after being melted, mixed and formed, the inhibition liquid sealed in the interior is released, and the inhibition liquid is generally a 20% calcium chloride solution. The aramid fibers are high-temperature-resistant, high-strength, superfine and flexible special fibers. According to a device, the flame-retardant pellets and the aramid fibers are combined, the rolling area of the flame-retardant pellets is purposefully limited through the traction effect of the aramid fibers, the inhibition balls are more concentrated in the throwing process, the influence of the throwing terrain on the effect of the flame-retardant pellets is reduced, and therefore the utilization rate of the inhibition balls is increased, and the flame-retardant effect is more efficiently achieved.

The invention discloses an emergency closing device for an air inlet of a cabin of a wind-driven generator. The emergency closing device comprises a filling device, soft bags and a control device, wherein the soft bags are communicated with the filling device through filling pipelines; the control device is used for controlling the filling device to open and close; and the soft bags are respectively arranged at each air vent in the cabin of the wind-driven generator and at ventilating gaps between the cabin of the wind-driven generator and other parts. The soft bags which can be filled are arranged on the emergency closing device provided by the invention, so that the purpose of closing all the air vents and the ventilating gaps can be achieved by swelling the soft bags by filling mediums into the soft bags communicated with the filling device through the filling device when a fire disaster happens in the cabin of the wind-driven generator; the interior of the cabin of the wind-driven generator is kept under a convection-free closing state, the fire-extinguishing concentration of a fire-extinguishing agent in the cabin is ensured and the dipping time of re-burning is avoided, so that a fire-extinguishing effect in a total flooding fire-extinguishing protection mode is ensured; without changing a structure of the cabin of the wind-driven generator, the emergency closing device has a high closing speed and an excellent closing effect; after the emergency closing device is used, the emergency closing device is convenient to recover or exchange; and the emergency closing device has the advantages of simple structure, simpleness in design and manufacturing, convenience in mounting and low manufacturing cost.