169 results about "Fire protection engineering" patented technology

The invention belongs to application of a reliability analysis technology to the technical field of fire engineering, and ensures that the using reliability of a fire fighting system is accurately analyzed and calculated. A fire fighting system reliability analysis and calculation method comprises the following steps of: establishing a fire fighting system reliability model and determining reliability units according to the working principle of the fire fighting system, forming a GO chart for establishing the fire fighting system according to the boundary of the fire fighting system and success criteria, and determining a fault judgment method for the reliability units of the fire fighting system according to task analysis of the system and fire code requirements; and substituting fault statistical data of the reliability units of the fire fighting system into a GO model of the fire fighting system to calculate corresponding reliability indexes of the fire fighting system, such as a fault rate, average maintenance time, availability and the like. By the method, the reliability of the fire fighting system can be objectively qualitatively evaluated or accurately quantitatively evaluated, and the method can be widely applied to reliability design, reliability manufacture, fault analysis and system evaluation of the fire fighting system.

The invention discloses a water-resistant magnesium oxysulfate fire-proof plate and a manufacturing method thereof and belongs to the field of fire-proof plate production. The fire-proof plate is prepared by adding active filler into slurry, mixing, hardening under a certain condition and demoulding, wherein modified magnesium oxysulfate is taken as a base material and medium-alkali glass fiber and non-woven fabrics and other materials are taken as a skeleton. Compared with the prior art, the fire-proof door core plate disclosed by the invention has no moisture absorption, higher durability than a conventional glass magnesium plate and smooth and beautiful appearance. The fire-proof plate can be applied to the field of building fire protection, especially fire protection engineering under a humid environment and has a good popularization and application value.

The invention relates to a rapid and efficient aerosol fire extinguishing agent and a preparation method thereof and belongs to the field of fire protection engineering. With the total mass of raw materials of the aerosol fire extinguishing agent being 100%, the aerosol fire extinguishing agent is prepared from, by mass, 60-80% of an antioxidant, 10-30% of a combustible agent, 0-15% of a modifier and 1-5% of an adhesive. The preparation method of the aerosol fire extinguishing agent includes the steps that firstly, the antioxidant, the combustible agent and the modifier are dried at 50-80 DEG C and then mixed evenly; then, the adhesive dissolved in ethyl alcohol or acetone is added, granulation is carried out with a screen after full and even mixing, and the granulated material is dried at 50-80 DEG C; then, the dried material is subjected to compression moulding forming with a mould, and the aerosol fire extinguishing agent is obtained. The aerosol fire extinguishing agent is easy to ignite, high in combustion speed, capable of generating a large amount of fire extinguishing matter within a short time, full and stable in combustion and high in fire extinguishing efficiency. According to the preparation method, the process is simple, the raw materials are easy to obtain, and the preparation cost is low.

The invention belongs to the technical field of polymer engineering materials and relates to magnesium carbonate modified halogen-free fire protection engineering plastic and a preparation method thereof. The engineering plastic comprises the following components in percentage by mass: 1 to 20 percent of nano magnesium carbonate, 1 to 15 percent of aids, 1 to 15 percent of synthetic resin and the balance of plastic. The nano magnesium carbonate is added into a fire resistant agent and the mechanical property of engineering plastic is not greatly influenced, and in addition, the added nano magnesium carbonate can also improve the rigidity and heat resistance of engineering plastic. A magnesium carbonate fire retardant is obtained by performing in-situ dispersion polymerization on the nano magnesium carbonate and alkyd resin. As the alkyd resin is compatible with nano magnesium carbonate, the dispersibility of nano magnesium carbonate in a polymer is improved and the alkyd resin is compatible with the synthetic resin.

The invention provides a detection alarm device for fire fighting hydraulic pressure, and belongs to the technical field of fire fighting engineering. The device comprises a plurality of groups of pressure sensors, pressure detection modules and pressure alarm control units; and signal output ends of the pressure sensors are connected with signal input ends of the pressure detection modules, communication ends of the pressure detection modules are connected with communication ends of the pressure alarm control units by two buses or wireless communication. The device can monitor the fire fighting hydraulic pressure in real time, and be connected to the prior urban fire control remote monitoring alarm system or building fire automatic alarm system for alarm by an alarm host. Fire fighting persons on duty can know pressures of monitoring points of the fire fighting water systems of all units in time, so that the normal operation of the fire fighting water systems is ensured, and the fire damage due to insufficient fire fighting water is avoided.

The invention relates to a fire protection engineering spraying fire extinguishing system and belongs to the technical field of fire protection engineering. A construction method comprises the following steps of S1, construction preparation; S2, installation of supports and hangers; S3, installation of trunk pipes; S4, installation of warning valves; S5, installation of vertical pipes; S6, installation of spraying layered trunk and branch pipes, fire hydrants and branch pipes; S7, installation of spray heads; S8, pipe flushing; and S9, pipe pressure testing. The construction method of the fireprotection engineering spraying fire extinguishing system has the effects that the fire protection engineering spraying fire extinguishing system is constructed safely and quickly; the engineering quality is safe and reliable; the construction period is greatly shortened; the fire protection engineering spraying fire extinguishing system achieves the important protection effect on buildings; andlife security of the citizens and national property security are effectively protected.

The invention relates to a fire extinguishing system and a construction method for fire protection engineering and relates to the technical field of fire protection engineering. The fire extinguishingsystem comprises an automatic water-spray fire extinguishing device and a smoke prevention and exhaust device. The smoke prevention and exhaust device comprises a smoke exhaust pipeline and a fire damper; a smoke passage and a valve are formed in a valve frame of the fire damper; and a driving part for driving the valve to rotate is installed on the valve frame. The driving part comprises a driving rod and a weight-adjusting water tank; a water guide pipe is installed on the weight-adjusting water tank; and an opening and closing valve controlled to be opened and closed by a slid-proof thermal expansion glass body is installed on the water pipe. Water enters the weight-adjusting water tank so that the weight-adjusting water tank slides down to drive the driving rod to rotate; the valve rotates along with the driving rod to close the smoke passage, thus a temperature fuse and a smoke sensor are replaced by the skid-proof thermal expansion glass body, so that the opening and closing ofthe fire damper can be implemented by a mechanical structure instead of an electric control structure, thereby preventing possible failure of an electric control part under a high-temperature condition, and thus the fire extinguishing system provided by the invention has the advantage of mechanically controlling the opening and closing so as to prevent failure of the fire damper.

The invention relates to a fire extinguisher, in particular to an automatic trigger type fire extinguisher. The automatic trigger type fire extinguisher comprises a film breaking device capable of breaking a sealing film. The film breaking device is a seal pressure-resistant film, or the film breaking device is a temperature-sensing piercing assembly, or the film breaking device is a temperature-sensing piercing assembly with a temperature control circuit, or the film breaking device is a plasma high-temperature discharging assembly, or the film breaking device is a comprehensive film breaking device comprising the seal pressure-resistant film, the temperature-sensing piercing assembly and the plasma high-temperature discharging assembly; combustion film breaking, film piercing and breaking and film breakdown and breaking of the sealing film can be triggered automatically, and therefore automatic fire extinguishing is achieved; and control over valve opening fire extinguishing at the voltage of 5 V below is achieved, and a control circuit with the voltage of 5 V below can be connected directly. By the adoption of the technical scheme, for the combustion point detection range, the application is wide, the structure is simple, the manufacturing and use cost is low, and the automatic trigger type fire extinguisher is suitable for fire protection engineering in multiple fields in the reality, and popularization is easy.

The invention discloses a CPVC pipeline for fire protection engineering, belonging to the technical field of CPVC pipelines. The CPVC pipeline is prepared from the following raw materials in parts by weight: 80-90 parts of CPVC resin, 16-18 parts of ceramic fibers, 7-10 parts of glass fibers, 10-12 parts of magnesium oxide, 5-7 parts of calcium oxide, 8-10 parts of calcium carbonate, 2-4 parts of chlorinated paraffin, 2-4 parts of tributyl phosphate, 2-3 parts of an ACR machining modifier, 4-6 parts of a CPE impact modifier, 0.5-1 part of a pigment, 1-2 parts of an antioxidant, 4-5 parts of a heat stabilizer and 0.05-0.5 part of an ultraviolet light absorber. The invention further discloses a preparation method of the CPVC pipeline for fire protection engineering. The CPVC pipeline has relatively good mechanical property and strong fire resistance and high-temperature resistance.

The invention relates to the technical field of intelligent fire protection, in particular to an intelligent monitoring method for monitoring the abnormal conditions of fire fighting engineering, which comprises the following steps of: 1, acquiring a dynamic data stream; 2, performing clustering analysis on existing historical empirical data by utilizing a principal component analysis (PCA) method, and establishing a multi-classifier model; 3, performing least square support vector machine algorithm LSSVM processing on the principal element data factor to obtain an optimal decision function equation; and 4, processing the acquired dynamic data streams by using different decision function equations of different principal element data factors to realize abnormal mode state identification inthe process. According to the method, the solving process of the model is greatly simplified, the training speed of the model is increased, and great help is provided for improving dynamic anomaly recognition in a fire-fighting project.

The invention discloses an intelligent fire-fighting robot with evacuation induction and voice recognition functions. The intelligent fire-fighting robot comprises a people number acquisition terminal, a processing module, a people statistics module, an evacuation storage database, an escape guide module, a voice acquisition module, a voice broadcast module, a fire monitoring module and a fire extinguishing execution module. With the people number acquisition terminal and the people statistics module, the estimated people escape number and the actual escape number at all outlet channels inn aplant or a fire-fighting engineering site can be determined; the people number escaped from all outlet channels is balanced and adjusted by combining the escape guide module, so that the stability ofthe number of evacuated people in each outlet channel is ensured, the induced evacuation is realized, casualties and treading events caused by panic escape of people in case of a fire are reduced; andvoice acquisition and recognition can be performed on a fire scene, so that the fire safety is greatly improved, and the efficiency of dredging people in the outlet channels is ensured to be improved.

The invention discloses a smoke discharge apparatus for fire engineering and an application method therefor, belonging to the technical field of fire fighting devices. The smoke discharge apparatus comprises a sprinkler pipe; the left and right side surfaces of the inner wall of the sprinkler pipe are fixedly connected to the left and right side surfaces of a support frame, respectively; a rotation mechanism is fixedly connected into the support frame; and the top end and bottom end of the rotation mechanism are fixedly connected to the lower surface of a transmission blade and the upper surface of a first gear, respectively. According to the smoke discharge apparatus for fire engineering and the application method therefor, by providing the transmission blade, a fourth gear and an exhaustblade, the smoke discharge apparatus has a smoke discharge function when fire occurs; and smoke can float upwards during combustion due to higher heat in condense smoke; and the smoke discharge apparatus can effectively discharge the condense smoke, so that people in the scene of fire is not easy to inhale more smoke inside, the possibility of harming a human body by introducing the smoke into arespiratory tract is lowered, and the safety of people is effectively guaranteed.

The invention discloses a fire hose cleaning device for firefighting engineering and an application method, and belongs to the technical field of firefighting. The fire hose cleaning device for the firefighting engineering comprises a shell. The inner wall of the shell is fixedly connected with the surface of a box body, a groove is formed in the reverse side of the shell, and the reverse side ofthe inner wall of the groove and the reverse side of the box body are fixedly connected with the obverse side of the same protective box. According to the fire hose cleaning device for the firefighting engineering and the application method, due to the fact that a motor, a rotating shaft, a hydraulic pressure pipe and a water storage box are arranged, a worm located on the top drives a second gearto rotate, a worm located at the bottom drives two first gears to move in the opposite directions, then brush rollers can be rotated in the opposite directions and clean the surface of a fire hose, meanwhile, the high pressure is formed in the hydraulic pressure pipe by a water pump, the fire hose is continuously washed, the fire hose can be kept clean, and the fire hose is kept slowly moving under the action of a second winding wheel. In this way, the fire hose can be wound as the fire hose is cleaned, the cleaning efficiency is guaranteed, and the labor intensity of a firefighter is greatlyreduced.

The invention relates to the technical field of fire engineering, in particular to a fire engineering pipeline water leakage detection method and device, equipment and a storage medium. The fire engineering pipeline water leakage detection method comprises the following steps that S10, water pressure data of a firefighting pipeline are obtained in real time, and the water pressure data of the firefighting pipeline is compared with a preset pressure reference value of the firefighting pipeline to obtain a corresponding water leakage comparison result; S20, if water leakage information is fed back from the water leakage comparison result, water leakage position information is obtained from the water leakage information; S30, according to the water leakage position information, a corresponding position in a preset BIM model of a firefighting pipe network is marked to obtain a water leakage pipe network BIM model; and S40, the pipe network attribute information is obtained from the water leakage pipe network BIM model, and a water leakage repair scheme is generated according to the pipe network attribute information. The fire engineering pipeline water leakage detection method has theeffect that the efficiency of water leakage detection of the building firefighting pipeline is improved.

The invention relates to a fire extinguishing system for fire-fighting engineering. The fire extinguishing system comprises water curtain walls which are arranged on the two sides of the vertical direction of a fire fighting access in the length direction of the fire fighting access correspondingly, wherein the interiors of the water curtain walls are hollow; water curtain devices are arranged inthe water curtain walls and comprise overflow boxes, water pumps and first water pipes; the overflow boxes are arranged above the interiors of the water curtain walls in the length direction of the fire fighting access; a first overflow opening communicated with the interior of the water curtain wall is formed in the upper end of the overflow box in the length direction of the overflow box; and the water pumps are arranged below the interiors of the water curtain walls and communicated with the overflow boxes through the first water pipes. The fire extinguishing system has the effects that thespreading speed of fire from the outside to the inside of the fire fighting access is reduced, and the escape time of escape personnel is prolonged.

The invention relates to a smoke exhaust system for fire-fighting engineering. The smoke exhaust system comprises a smoke detection unit, a temperature detection unit, a smoke exhaust unit, a sprayingunit, an image acquisition unit and a central control unit. By arranging a plurality of smoke detectors, temperature detectors, smoke exhaust pipelines and sprayers, a house is divided into a plurality of detection sites, different areas in the house can be independently protected by independently detecting the sites, the site is independently treated when open fire occurs at a certain site, meanwhile, the central control unit can flexibly adjust the rotating speed of exhaust fans and the water spraying amount of the sprayers according to the smoke concentration and temperature in the open fire site so as to carry out smoke exhausting and fire extinguishing respectively, when the fire behavior is too high, the peripheral exhaust fans and sprayers are started to carry out auxiliary smoke exhausting and auxiliary fire extinguishing, therefore, targeted smoke exhausting and fire extinguishing for different fire behaviors are completed, and the fire-fighting efficiency of the system is improved.

The invention belongs to the field of fire fighting, and particularly relates to a fire fighting cabinet. A fire fighting cabinet is one of necessary equipment in fire fighting engineering. Accordingto the fire fighting cabinet, the problems that a fixed fire extinguisher of a traditional fire fighting cabinet is not easy to take and store, then the use space cannot be adjusted according to stored objects, two different fire extinguishing agents cannot be sprayed, and water pipes cannot be rolled up automatically are solved; and the fire extinguishing agents in two liquid storage tanks are adjusted to be respectively sprayed or simultaneously sprayed by switching a switching rod, winding drums can be controlled to roll up the water pipes by adjusting the steering of a motor, then the fireextinguishers with different shapes can be clamped, the fire extinguishers are convenient to take and store, the fire extinguishers cannot be dumped, the use space of storage lattices can be adjusted, and thus the storage space can be utilized to the greatest extent.

The invention discloses fire hose cleaning equipment for fire-fighting engineering, and relates to the technical field of fire-fighting equipment. The fire hose cleaning equipment for fire-fighting engineering comprises a water conveying device, the water conveying device comprises a water pump, the rear side face of the water pump is fixedly connected with a water receiving pipe, and the lower end of the front side face of the water pump is rotationally connected with a drainage baffle through a spring shaft; a first connecting pipe is fixedly connected with the left side face of the water pump, and a threaded groove is formed in the left end of the outer side face of the first connecting pipe; a through opening is formed in the right side of the threaded groove in the lower surface of the first connecting pipe, and a first water passing pipe is fixedly connected with the through opening; and a hose is fixedly connected with the lower surface of the first water passing pipe. The problems that when existing fire hose cleaning equipment is used, a hose is flat after being taken down from a winding device, and only the two flat sides of the hose can be washed during cleaning, if thebent part is stained with dirt, then the bent part is difficult to clean, so that cleaning is insufficient, and the dirt removing effect is reduced can be solved.

The invention belongs to the technical field of fire escape, and particularly relates to a fire escape lifting mechanism for fire engineering. The fire escape lifting mechanism comprises lifting boxes, supporting rods, chains and chain wheels. When the escape device is used, people enter one lifting box by opening a corresponding escape door, and then the lifting box is driven to move downwards through gravity. After moving downwards to a position matched with a corresponding escape door on the next floor, the lifting box carrying people stops moving, and people enter the next floor by openingthe corresponding escape door from outside. According to the escape device, when people enter the next floor and encounter fire at a corresponding house door on the next floor, people can directly walk to the other side of a landing and continue to move downwards through another set of lifting box. Therefore, when escaping through the escape device, people can take the lifting boxes in a Z shapeto escape.

The invention relates to a smoke exhaust system for fire-fighting engineering. The smoke exhaust system comprises a smoke alarm, a main air pipe communicated with the interior of a building, an auxiliary air pipe communicated with the main air pipe, a bidirectional fan fixed in the main air pipe, a switching device and a controller, the smoke alarm is electrically connected with the controller, the controller is electrically connected with the bidirectional fan, the switching device comprises an air inlet plate vertically arranged in an auxiliary air pipe, a guide rod horizontally penetratingthrough the air inlet plate and in sliding fit with the air inlet plate, a sealing plate fixed to the end of the guide rod, a closed air bag arranged between the sealing plate and the air inlet plate,and an air pump fixed to the auxiliary air pipe and communicated with the closed air bag. The air pump is electrically connected with the controller. An air inlet is formed in the plate surface of the air inlet plate, and the two sides of the closed air bag are movably sealed with the inner side walls of the two sides, parallel to the length direction of the guide rod, of the main air pipe. The effects of smoke discharge, ventilation and air exchange are obtained, and the utilization rate of the air pipe is increased.

The invention relates to the technical field of building fire fighting engineering, in particular to an automatic water spraying system for building indoor fire protection. The system comprises a main water pipe arranged on the inner side of the top of a room body, wherein the room body is provided with a water supply assembly for supplying a water source to the main water pipe, the main water pipe is communicated with a water outlet pipe, a control mechanism used for controlling water circulation is arranged on the water outlet pipe, the end, away from the main water pipe, of the water outlet pipe communicates with a spraying gun through a connecting hose, the water outlet pipe is provided with a swing mechanism used for adjusting the spraying angle of the spraying gun, a smoke detector is arranged on the inner side of the top of the room body, the smoke detector is electrically connected with the control mechanism, and a camera is arranged in the room body. The automatic water spraying system has the effect of improving the fire extinguishing efficiency.

The invention discloses a fire monitor voice type intelligent fire extinguishing system for large-space fire engineering. The system comprises a voice acquisition module, a voice preprocessing module,a semantic conversion analysis module, a keyword extraction module, a parameter storage database, a positioning module, a processing module, a fire extinguishing execution module and a posture adjustment module. According to the system, voice information is acquired, and the acquired voice is processed and converted into a control instruction which can be recognized by a fire monitor, so that voice intelligent control over the fire monitor is realized, and the complexity degree of manual operation of the fire monitor by personnel is reduced; and the rotation angle, the elevation angle and thefire extinguishing of the fire monitor can be controlled according to the voice control instruction, so that voice operation is realized, and the risk of operating the fire monitor by the personnel on a fire scene is reduced. The system has the characteristics of being intelligent and simple in operation control, and can accurately carry out fire extinguishing treatment on the position of a firesource.

The invention relates to the technical field of fire-fighting facilities, and discloses a smoke control and exhaust device for fire engineering. The smoke control and exhaust device for fire engineering comprises a bottom plate, a steering assembly is fixedly mounted at the top of the bottom plate, a supporting plate is movably mounted at the top of the steering assembly, a motor assembly is fixedly mounted at the top of the supporting plate, a bevel gear is fixedly mounted outside the motor assembly, a transmission screw rod is fixedly installed in the bevel gear, a threaded cylinder is installed on the outer portion of the transmission screw rod in a threaded mode, a bearing seat is fixedly installed on the outer wall of the threaded cylinder, an exhaust fan is inserted into the bearing seat, a sliding block is fixedly installed on the side, away from the bearing seat, of the threaded cylinder, and a sliding rail plate is fixedly installed on the back face of the supporting plate. According to the smoke control and exhaust device for fire engineering, universal wheels are installed at the bottom of the bottom plate, so that the exhaust fan is convenient to transport and move, and when steering cannot be achieved through a cart rod due to environmental limitation, steering can be achieved by changing the supporting plate, the exhaust fan and other components through a steering assembly.

The invention discloses a fire-fighting engineering drawing generation method and system and a computer readable storage medium. The method comprises the steps: receiving confirmation instruction information of basic data of a target building; receiving pipeline selection instruction information; determining a pipeline type according to the pipeline selection instruction information; receiving parameter information and path information of the pipeline type; generating pipeline result information according to the parameter information and the path information; receiving position information andtypes of added components on the pipeline result information; generating fire-fighting engineering drawing result information according to the position information and the type of the component, anddisplaying the fire-fighting engineering drawing result information; therefore, the application deficiency of the BIM technology in the field of fire-fighting engineering design is filled up; meanwhile, the system is internally provided with rich data information such as material types, related parameters and construction processes for free selection of designers, and the working efficiency of thedesigners is effectively improved.

The invention discloses an installation device for fire-fighting engineering construction, belongs to the technical field of fire-fighting engineering, and solves the problems that when a fire-fighting pipe is installed, the fire-fighting pipe is easy to shake when placed on a traditional installation support, balance is difficult to master, the fire-fighting pipe tilts when installed carelessly,and re-detachment and re-installation are needed, so that time and labor are wasted, and the workload of construction personnel is increased. The installation device for fire-fighting engineering construction comprises a support, wherein the support comprises four supporting legs and transverse rods connected to the upper end and the lower end between the supporting legs; an operation table is arranged on the transverse rod at the upper end of the support; a fire-fighting pipe placement platform is installed on the transverse rod at the front side of the support through a lifting mechanism; and the lifting mechanism comprises a vertically-arranged rail and a moving assembly. The installation device for fire-fighting engineering construction is simple in structure, convenient to operate, time-saving and labor-saving, capable of reducing the manufacturing cost, and convenient to popularize and use.

The invention provides a CPVC pipe for fire protection engineering and a preparation method of the CPVC pipe. The CPVC pipe comprises a CPVC base pipe, an epoxy powder layer, an adhesive layer, a flame-retardant layer, a heat-resistant layer, an antioxidant layer, an antistatic layer, an anticorrosive layer and a protecting glue layer and a liner layer, wherein the epoxy powder layer, the adhesivelayer, the flame-retardant layer, the heat-resistant layer, the antioxidant layer, the antistatic layer, the anticorrosive layer and the protecting glue layer are sequentially arranged on the outer wall of the CPVC base pipe from inside to outside; the liner layer is arranged on the inner wall of the CPVC pipe; and the flame-retardant layer contains the following components in parts by weight: 30-40 parts of polyurethane resin, 25-35 parts of methyl methacrylate, 10-15 parts of butyl acrylate, 10-15 parts of acrylamide, 10-15 parts of polyvinyl alcohol, 10-15 parts of ammonium polyphosphate,15-25 parts of cellulose acetate, 1-5 parts of a defoaming agent, 1-5 parts of a silane coupling agent and 60-70 parts of deionized water. The CPVC pipe has excellent flame retardance, limited flame spreading property or low smoking performance, high corrosion resistance, good mechanical strength and excellent weather resistance and wear resistance.

The invention discloses a fire extinguishing device and a fire extinguishing method, and belongs to the technical field of fire engineering. The fire extinguishing device comprises a power supply module, a detection module, a delay module, a control module, an electric control valve and a fire extinguishing storage tank. After the power supply module supplies power to the detection module, the detection module detects the environment signal, and when the detected environment signal meets the fire extinguishing condition, the first input end and the first output end of the detection module areconnected, and at the moment, the first input end and the first output end of the delay module are powered on. Afterwards, the delay module starts timing, and after a duration threshold value is reached, the second input end and the second output end of the delay module are connected, and at the moment, the second input end and the first output end of the control module are powered on. Afterwards,the third input end and the third output end of the control module are connected, and the first output end and the fourth output end of the control module are connected, and at the moment, the electric control valve is powered on and automatically opened, so that fire is extinguished through media contained in the fire extinguishing storage tank, and automatic fire extinguishing is achieved.

The fire extinguishing device comprises a base, a lifting plate capable of ascending and descending is installed at the top of the base, an inner gear ring is fixed to the top of the lifting plate through a fixing rod, a plurality of spray heads capable of spraying water are installed on the outer wall of the inner gear ring, and the spray heads are annularly distributed; a powder spraying box used for containing flame-retardant powder is fixed to the top of the lifting plate through a supporting rod, and a powder spraying opening is formed in the outer wall, close to the inner gear ring, of the powder spraying box. The powder spraying device further comprises an inflation assembly used for inflating the powder spraying box. Through cooperation of structures and dual cooperation of water and flame-retardant powder, the fire extinguishing speed and efficiency can be further improved, after the fire extinguishing agent is mixed with water, the powder can form a pasty isolation layer on the surface of a comburent, the oxygen isolation effect can be further achieved, then the comburent can be effectively prevented from being reburnt, and the fire extinguishing effect is improved. And the hidden danger of secondary fire is avoided.

The invention discloses a multipurpose folding high altitude escape cabin and belongs to the fire engineering machinery. The multipurpose folding high altitude escape cabin is characterized by comprising a flexible overhanging device, a lifting device and a folding personnel riding device, wherein when the cabin is subjected to the action of gravity, the flexible overhanging device can stretch so as to send the escape cabin outdoors; a fireproof steel wire rope passes through the lifting device; being subjected to the action of gravity, two wheels D clinging to a wheel A move toward the middle, and two wheels C move toward the middle simultaneously through a 7-shaped transmission rod, so that the fireproof steel wire rope tightly clings to the wheel A, and escape or rescue personnel pulls a manual chain to move up and down on the fireproof steel wire rope so as to achieve a purpose of escape or rescue; and the outer side of the folding personnel riding device is as same as a balcony window of an exterior wall or a glass curtain wall material and the appearance is similar to exterior wall decoration and the device is tightly combined with the exterior wall, a fireproof door is arranged on the inner side of the device, and folding parts on two sides are made from fireproof material cloth, so that the closeness of the escape cabin is guaranteed and the life safety of personnel in the cabin is guaranteed.

The invention belongs to the technical field of fire-fighting alarm, particularly relates to an automatic fire alarm system for fire-fighting engineering, and provides the following scheme for solving the problems that a traditional fire alarm system cannot obtain detailed understanding of the condition of a fire area and cannot organize evacuation. The automatic fire alarm system includes a local monitoring module, an evacuation assisting module, an automatic alarm, a manual alarm, a fire exit door controller and a fire-fighting remote monitoring center, and the automatic alarm, wherein the manual alarm and the local monitoring module are all wirelessly connected with the fire-fighting remote monitoring center, and the evacuation assisting module is wirelessly connected with the fire-fighting remote monitoring center through the Internet. According to the system, the fire condition of each area can be monitored in real time through the temperature monitor and the smoke detector, information is processed, then an optimal escape route is formulated, and the fire-fighting remote monitoring center sends the escape route to on-site personnel through the intelligent terminal, so that evacuation management of the on-site personnel is greatly facilitated, and the evacuation efficiency is improved.