178results about How to "Reduce fire damage" patented technology

The invention provides a system and a method for calculating a safety escape route of building fire hazards. The system comprises a fire detection subsystem, an index detection subsystem and a center analytical calculation subsystem. The fire detection subsystem is used for monitoring various areas of a building in real time in case of the fire hazards, and sending monitored fire hazard information to the center analytical calculation subsystem. The index detection subsystem is used for monitoring index parameters of the areas of the building in real time, and the index parameters include at least one or one combination of hazardous gas concentration, hazard number, protective measure condition and staff number. The monitored index parameters of the areas are sent to the center analytical calculation subsystem. The center analytical calculation subsystem is used for receiving information of the fire detection subsystem and the index detection subsystem, and calculating the safety escape route according to the received fire hazard information and the index parameters. By the aid of the system and the method for calculating the safety escape route of the building fire hazards, accuracy of firefighting and warning and speed of personnel evacuation are increased, and fire damage is reduced.

The invention relates to a vehicle fire linkage method based on a track traffic full-automatic driving system. The vehicle fire linkage method comprises the following step: by communicating a running train, a control center immediately obtains alarm information, confirms fire alarm information by virtue of CCTV and prevents a false alarm operation; in case of a fire, the control center performs a reasonable operation more immediately, quickly and efficiently by use of a fire linkage method, and therefore, the safety degree of track traffic operation is increased and the fire losses are reduced to the utmost extent; furthermore, the method has excellent practical application. The invention also discloses a vehicle fire linkage device based on the track traffic full-automatic driving system.

The invention discloses a coupling certainty and uncertainty analysis fire risk evaluation method. The method comprises steps that S1, risk factors are identified, and a fire risk evaluation system isestablished; S2, a fuzzy analytic hierarchy method is utilized to determine the index weight of each risk factor; S3, the fuzzy theory is utilized to combine with the confidence to calculate the firerisk of each single factor; S4, the evidence reasoning operator is utilized to synthesize the fire risk of each single factor; S5, an expected utility value is utilized to acquire the clear evaluation result; and S6, the sensitivity analysis method is utilized to verify feasibility of a model.

The invention discloses a fire-extinguishing scheduling method and system for fire-fighting robots of an electric tunnel. The scheduling method comprises the following steps: obtaining tunnel ambientcondition data, and adopting a transverse data fitting and longitudinal data fitting method to pre-judge a suspected fire source position and strength according to the tunnel ambient condition data; scheduling a video robot to be close to the suspected fire source position within a safety distance to judge a development stage of a fire behaviour; scheduling the surrounding fire-fighting robots ina unified mode according to the determined development stage of the fire behaviour and strength of the fire behaviour, and scheduling the fire-fighting robots to a fire behaviour site to perform fire-fighting fire-extinguishing treatment; and scheduling the fire-fighting robots which complete spray to withdraw from a fire source site, obtaining fire behaviour continuous monitoring data of the video robot in real time, and performing secondary fire-extinguishing treatment once after-combustion occurs. The fire-extinguishing scheduling method and system can realize automatic fire behaviour monitoring and fire extinguishing, guarantee safe operation of power equipment without staff on duty and human intervention, greatly reduce labor cost, and improve working safety of personnel.

The invention discloses a fireproof cable sleeve. The fireproof cable sleeve is composed of a cable bushing, a connection sleeve, a sealing plug and a broken cable alarming system. The cable bushing is composed of at least two sections of cable passing pipes which are connected through the connection sleeve. The connection sleeve is composed of a pipe wall and a baffle, the cable passing pipes are of a hollow tubular structure, the pipe wall is composed of an outer insulation wall and an inner hot melting wall, and the outer insulation wall and the inner hot melting wall are connected through rib plates to form a fireproof cavity. The broken cable alarming system is composed of a power source, a switch, a buzzer, an early warning wire and an adjusting resistor, and the early warning wire is embedded into the inner hot melting wall and surrounds the inner hot melting wall. On one hand, the cable ignition accident can be effectively eliminated in time and an alarm is given out in time, so that the risk that a cable triggers a fire is reduced greatly; on the other hand, the situation that after one cable breaks down and causes a fire, adjacent cables are damaged is effectively and completely eradicated, the fire damage is reduced greatly, the restoration cost needed after a disaster happens is saved largely, the restoration time spent after a disaster happens is shortened, and the efficiency for eliminating the fire accident is improved.

The invention relates to a ceramic fireproof fire-resistant silicon rubber wire and cable. The wire and cable comprise a plurality of conductors, each conductor is wrapped by a ceramic silicon rubber insulating layer in an extruding mode to form a wire core, multiple wire cores are wrapped by a wrapping tape layer to form a cable core, padding is arranged in the cable core, and a ceramic silicon rubber outer sheath is arranged outside the cable core. The ceramic fireproof fire-resistant silicon rubber wire and cable have characteristics batter than those of a common rubber cable and a flame retardant rubber cable and form a hard shell after being ablated by high-temperature flames to protect a burned article from being damaged, and the hard shell formed after ablation protects the wire and cable, so that unblocked electric power and communication are ensured, and precious time are won for personnel evacuation and rescue under the fire disaster condition.

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 provides a fire door with a fire extinguishing system, comprising a door frame, a scroll, a door panel, a power supply, a controller, a drive motor, a temperature sensor, a smoke sensor, a water delivery valve, a water pipe, a three-way solenoid valve, a four-way solenoid valve and Atomizing nozzle; the water delivery valve is fixed on the door frame, the water outlet of the water delivery valve is connected to one end of the water pipe, the water pipe is connected to the four-way solenoid valve at intervals and evenly laid inside the door panel, and the end of the last water pipe is connected to a three-way solenoid valve The atomizing nozzles are evenly distributed in pairs on the door panel. The nozzles of each pair of atomizing nozzles are in opposite directions and fixed on the front and rear surfaces of the door panel respectively. The nozzles of the atomizing nozzles are connected with the outside world. The other two connecting ports of the one-way solenoid valve or the three-way solenoid valve are respectively connected. The fire door provided with the fire extinguishing system of the present invention uses uniformly distributed atomizing nozzles to spray the fire, which is beneficial to the fire door to control the fire independently and reduce fire losses.

A multifunctional fire fighting truck with a pipe frame type truck body comprises an underpan, a truck head, the truck body, a fire water monitor, a fire foam tank, an engine, a booster pump and a foam pump, and is characterized in that the truck body comprises a rear pipe frame, a fire foam tank rack, a pipe frame communicating supporting pipe, pipe frame left and right supporting fixed transverse pipes and front and rear pipe frame externally connected water inlet pipes, wherein the rear pipe frame is fixed with the upward rear side of the underpan; the fire foam tank rack is fixed with the underpan; the front end of the pipe frame communicating supporting pipe is connected to the upper part of the left end of a front pipe frame while the rear end of the pipe frame communicating supporting pipe is connected to the upper part of the left end of the rear pipe frame; front ends of the pipe frame left and right supporting fixed transverse pipes are connected with the left end and the right end of the front pipe frame while rear ends of the pipe frame left and right supporting fixed transverse pipes are connected with the left end and the right end of the rear pipe frame; left ends of front and rear pipe frame externally connected water inlet pipes are connected with right ends of the front pipe frame and the rear pipe frame while right ends of the front and rear pipe frame externally connected water inlet pipes are fixed with a pipe frame right support; the fire foam tank is arranged on the fire foam tank rack; a fire foam guiding-out pipe opening and closing valve and a fire foam supply pipe are arranged on a fire foam guiding-out pipe; and the fire water monitor is connected between the front pipe frame and the rear pipe frame. Functions are expanded; the utilization rate of the truck body is high, the cost is low, and the dead weight is light; fire extinguishing modes are various; and fire extinguishing time is shortened.

The invention relates to a fire-fighting technology, and in particular relates a method and device for rapidly adjusting the water yield and effluent pressure of a hydraulic monitor of a fire engine. The existing fire-fighting technology has the following defects: the difficulty of management at the fire scene is serious; the speed for adjusting the water yield and effluent pressure of the hydraulic monitor is slow; and the extinguishing efficiency is low. The method in the invention is that: arranging a controller (11), a pressure sensor (5) arranged on the inlet and outlet of a fire-fighting water pump on the fire engine and a flow rate sensor (9); setting the control parameters of the controller (11); inputting the sensor signals in the controller; and regulating the size of a throttle of an engine automatically, and regulating the rotation speed of the motor and the pressure of the water pump outlet to reach the preset target. The device provided by the invention comprises the controller (11), the pressure sensor (8) of the water pump outlet, the pressure sensor (5) of the water pump inlet and a rotation speed sensor (6). The method and device for rapidly adjusting the water yield and effluent pressure of the hydraulic monitor of fire engine have the advantages that the fire-fighting working efficiency is improved, the extinguishing speed is improved, the fire disaster loss is reduced, and the operation is convenient and easy.

A glass block structure supported by a flexible phenolic resin framework is disclosed. The phenolic resin framework is bonded to the individual glass blocks with an adhesive substance that is placed so as to lie at or near the corners of the blocks. The phenolic resin that makes up the supporting framework may advantageously be formed in a pultrusion process wherein the resin is embedded with glass-like strands. Further heat-tolerance and adhesion may be obtained from the use of a high-heat tolerant putty applied between the phenolic resin and the glass blocks. The flexibility of the phenolic resin allows the block structure to be preassembled and then transported to an installation site as a single, ready-to-install unit.

A glass block structure supported by a flexible phenolic resin framework is disclosed. The phenolic resin framework is bonded to the individual glass blocks with an adhesive substance that is placed so as to lie at or near the corners of the blocks. The phenolic resin that makes up the supporting framework may advantageously be formed in a pultrusion process wherein the resin is embedded with glass-like strands. Further heat-tolerance and adhesion may be obtained from the use of a high-heat tolerant putty applied between the phenolic resin and the glass blocks. The flexibility of the phenolic resin allows the block structure to be preassembled and then transported to an installation site as a single, ready-to-install unit.

The invention discloses a metering injection type compressed air foam fire extinguishing system and a using method thereof. The metering injection type compressed air foam fire extinguishing system comprises a control and power supply part, a foam liquid supply part, a water supply part, an air supply part and a foam mixing chamber and injection part. The invention further discloses a using method of the fire extinguishing system, reasonable mixing of air, a foam stock solution and water is systematically controlled, jet fire extinguishing of a foam mixed solution is carried out under a control system, and protection and pigging design is added. By means of the metering injection type compressed air foam fire extinguishing system and the using method, the reliability of the fire extinguishing system is improved through reasonable system design, foam mixing is conducted through a positive pressure type technology, the problem that the spraying range is short is solved, the control system is optimized, and the later maintenance efficiency and quality are improved due to the fact that modular design is adopted for a mechanical part.

The invention provides a method for manufacturing an anti-flaming waterproof ventilated cushion, and relates to the technical field of manufacturing a composite material with functions of flame retardance, water prevention and ventilation. The method comprises the following steps of: firstly, carrying out mixing granulation on polypropylene H2800, metallocene polyethylene, Exxon Mobil elastomer PP6002, nano calcium carbonate, a coupling agent, a dispersing agent, a lubricating agent and chlorinated paraffin, so as to form a sheet material; secondly, heating and stretching the sheet material to manufacture a copolymerization microporous membrane; thirdly, thermally pressing polypropylene non-woven fabrics on the two surfaces of the copolymerization microporous membrane through a hot roll, so as to form a three-in-one semi-finished product; and finally, soaking the three-in-one semi-finished product in mixed impregnation liquid containing a fire retardant, a hydrophilic agent, and a silane coupling agent JS-D758, and drying through using a drying cylinder, so as to form the anti-flaming waterproof ventilated cushion. The anti-flaming waterproof ventilated cushion manufactured by using the method by the invention is applicable to a metal roof, a pitched roof, and one layer of protection film outside thermal-insulating cotton and rock wool. Due to the specific ventilation property of the anti-flaming waterproof ventilated cushion manufactured by using the method provided by the invention, water inside a building structure is rapidly discharged, so that the flame retardance can be shown in the case of fire, and the loss can be reduced.

The invention provides a flame retardant paper and a production method thereof. According to the method, 35-75 weight parts of aluminum silicate fibers and 5-4 weight parts of adhesives are used as the raw materials; the aluminum silicate fibers are removed dregs, then beaten for 5-30 minutes, mixed with the adhesives, poured into a defibering device with 800-3000rad for defibering, and subsequently made into papers by using a paper making forming device; and the papers are dried by vacuumizing to form paper sheets. The flame retardant packaging paper is produced by using aluminum silicate fiber compound papers instead of plant fibers and traditional flame retardants, is environment-friendly, and has good flame retardant effect, and the problems of using toxic substances, polluting environments, having poor flame retardant effect and the like during production of flame retardant packaging papers are avoided.

The invention discloses a flame-retardant antibacterial finishing method for cellulose carpets. The method comprises the following steps: adopting a flame-retardant antibacterial finishing agent compounded by taking organic phosphorous compounds and active amino organic lipid compounds as main components; uniformly laying a small-size carpet on a processing table and uniformly spraying the compounded finishing agent on the front of the small-size carpet; extruding water in the carpet through an extrusion device and appropriately adjusting the extrusion height of the extrusion device according to the thickness of the small-size carpet; primarily determining drying time according to the moistening degree of the small-size carpet absorbing the finishing agent and drying the small-size carpet at the temperature of between 100 and 120 DEG C for 2 to 10 minutes so as to ensure that the moisture-containing rate is between 4 and 10 percent; and allowing the finishing agent and cellulose fiber to be fully combined through 2 to 10 minutes of high-temperature baking at the temperature of between 90 and 140 DEG C so as to ensure that the moisture-containing rate after drying is not more than 10 percent. The method has the advantages of ensuring that the small-size carpet finished by the method still has flame-retardant, antibacterial and anti-mite function for a long time after washing and is safe and sanitary, effectively reducing fire loss, ensuring life and property safety and effectively reducing and eliminating mites.

The invention discloses a power system equipment state monitoring method. A monitoring device is installed on a power equipment line needing to be monitored, and the monitoring device transmits the information to the background through a wireless mode; the monitoring device includes a break circuit monitor, a GPS positioning module, a control circuit, a LoRa node device, a smoke sensor and a temperature sensor, whether the equipment can be monitored abnormally or not through the break circuit monitor, and the purpose of monitoring is achieved, the monitoring device can monitor the states of smoking and ignition inside the monitored power equipment through the smoke sensor, the fire disaster situation can be monitored in advance compared with a traditional external fire extinguishing systemsmoke alarm device, and the LoRa communication circuit has the characteristics of long distance, low power consumption, multi-node, low cost, stable transmission, and high anti-interference, so thatthe monitoring device is wide in application and simple in laying, the node devices can be randomly increased, the system capacity is large, and the application is wide.

The invention discloses an intelligent fire regulation and control method and system and intelligent equipment. The method comprises the steps that the thermal load of each area in a total fire area is monitored in real time, and a fire behavior schematic diagram is generated according to the thermal load of each area, wherein the fire behavior schematic diagram indicates the fire grades of each area; and a rescue worker scheduling scheme is generated in combination with rescue worker distribution information in the total fire area and the fire behavior schematic diagram, so that areas of different fire grades are matched with a corresponding number of rescue workers. According to the method, the severity level of a fire alarm is intelligently calculated through the thermal load, and the fire behavior schematic diagram is quickly generated; and based on the fire behavior schematic diagram and the rescue worker distribution information in the total fire area, the rescue worker scheduling scheme is quickly generated, and rescue workers can be scheduled timely and reasonably, so that a fire is quickly dealt with, the accident response speed and the accident processing efficiency are improved, and fire loss and casualties are reduced.

The invention relates to a vehicle fire safety intelligent fire extinguishing system and a vehicle. The fire extinguishing system comprises a fire early-warning device, an intelligent central controller, a fire extinguishing device, a communication module and a vehicle position positioning module, the fire early-warning device is used for obtaining fire possibility information in a vehicle, the intelligent central controller is used for receiving the fire possibility information and producing a fire extinguishing instruction according to fire signals when analyzing and obtaining the fire signals, the fire extinguishing device receives the fire extinguishing instruction and achieves start or stop for responding to the fire extinguishing instruction, the communication module is in communication connection with the intelligent central controller and used for sending vehicle information to a cloud server and feeding back a remote processing instruction of the cloud server to the intelligent central controller, and the vehicle position positioning module is used for sending the vehicle position to the cloud server through the communication module. Compared with the prior art, the vehicle fire safety intelligent fire extinguishing system has the advantages of being safe, timely, high in reliability and the like.

The invention discloses an intelligent fire-fighting rapid linkage method and a system for realizing the method. The method comprises steps that environment monitoring equipment transmits monitoring data to a monitoring system, the monitoring system analyzes the monitoring data, and transmits the alarm information to an on-site terminal after a fire is determined to happen; a field person obtainsa fire prompt through the field terminal and is in contact with the monitoring system, and the monitoring system plans a rescue route according to the field condition; the field personnel obtain the rescue route and arrive at the fire site according to the rescue route to rescue the fire. The system is advantaged in that a large number of monitoring devices are arranged on site, through software analysis, an alarm can be given out in the early stage of a fire, field personnel are contacted, and the optimal route is planned, so the field personnel can quickly arrive at a fire site to extinguishthe fire while conveniently obtaining fire-fighting materials, and fire loss is reduced as much as possible.

The open-air freight yard moves the fireproof scaffolding, and the fireproof scaffolding (26) is covered and fixed with a fireproof scaffolding cloth (16), and the roller triangular support (9) under the fireproof scaffolding (26) is equipped with a plurality of rollers (6), The mobile fire-proof scaffolding can be folded and placed aside for subsequent use at ordinary times, and when a fire breaks out, pull with manpower or with the remote control tractor (18), the scaffold traction rope (17) that is fastened at the left and right ends of the fireproof scaffold (26) ), to move the fire-proof scaffolding to the top of the stacked goods, and the burning flame ignites the dry powder bomb (31) to carry out double all-round coverage and sealed fire extinguishing. Goods can be isolated from the fresh air, so as to achieve the purpose of oxygen-blocking, flame retardant and fire extinguishing. The invention has wide application, and can prevent the goods from wind, sun, sun and rain at ordinary times; It is especially suitable for various open-air cargo yards, large-scale indoor storage, large-scale open-air oil tank bases, and dangerous goods storage for fire-fighting.

The invention relates to a novel fluorescent fire door. The novel fluorescent fire door comprises a fire door body, a groove is formed in the fire door body, anaccommodating cavity is formed in the side wall of the groove, a fluorescent component A is installed in the accommodating cavity, anda sealing film is arrangedat the position, corresponding to an entrance of the accommodating cavity, of the groove in a pasted mode; a piercing structure is arranged on the side, backing on the accommodating cavity, of the sealing film, the piercing structure is connected with the groove through a compression spring, the piercing structure is further provided with a temperature-sensitive limiting component, and the temperature-sensitive limiting component is used for limiting the position of the piercing structure within a set temperature range; and the groove is furtherinternally provided with a fluorescent component B, the fire door body is provided with a panel at a position corresponding to the groove, the panel has light transmittance, the panel and the fire door body are arranged in a sealed mode toinstall the fluorescent component B in the groove in a sealed mode, the fluorescent component A and the fluorescent component B both have fluidity, and the fluorescent component A and the fluorescent component B have a fluorescent effect after mixing. The fluorescent fire door does not need to depend on a power system, and the fluorescent indication effect can be achieved regardless of whether the power system at the fire site is intact or not.

The invention discloses an intelligent dense shelf, comprising a main box body and an auxiliary box body, the main box is arranged on the right side of the auxiliary box body, a main separation chamber and a main storage chamber are arranged in that main box body. The auxiliary box body is provided with an auxiliary object chamber and an auxiliary separation chamber, a separation motor is arrangedin the main separation chamber, the motor shaft of the separation motor is fixedly connected with a separation screw which is matched with the auxiliary separation chamber, smoke sensors are arrangedat the top ends of the inner cavity side walls of the main object chamber and the auxiliary object chamber, and the separation motor is respectively connected with all smoke sensors. As the smoke sensor sense the fire, the smoke sensor transmits information to the separation motor and the control valve respectively, and the separation motor drive the separation screw to rotate in the positive direction, so that the screw pushes the main box body and the sub box body to separate, thereby preventing the fire from spreading and causing great loss. At the same time, the control valve is opened, the sand in the sand storage box enters the spraying device through the sand feeding pipe, and finally sprays through the nozzle to cover the fire and extinguish the fire, so as to ensure that the fireis extinguished in the sprouting state to the maximum extent.

The invention discloses a high-pressure gas mist linkage automatic fire extinguishing system. A high-pressure water supply system comprises a water path connecting a water source, a filter, a first electric control valve and a water tank in sequence; a primary water supply pipeline is connected to the bottom of the water tank and connected with a secondary water supply pipeline through a pipeline provided with a high-pressure pump and a check valve; the secondary water supply pipeline provided with a pressure sensor is connected with a main pipeline of a flow sensor through a second electric control valve; a high-pressure nitrogen system comprises a gas path connecting a high-pressure gas source, a pressure regulating valve, a third electric control valve and a mass flow meter in sequence; the tail end of the gas path is connected with the main pipeline; a plurality of nozzles are connected to the tail end of the main pipeline through a plurality of branch pipes; a smoke sensor and a temperature sensor which are connected with an alarming device are mounted at the tail end of the main pipeline; and a drain valve and a liquidometer are mounted in the water tank. Large-particle-size water drops are prevented from being formed when fire extinguishing with high-pressure fine water mist is completed, secondary disasters to protected substances are reduced, and the environment pollution is avoided.

The invention discloses a power storage module of an energy storage system and an energy storage system. The power storage module comprises an independent shell and a battery pack; the independent shell is of a sealed structure and comprises a shell body and a door body; the shell body is provided with a containing cavity, and the door body is used for opening and closing a cavity opening of the containing cavity; and the battery pack is mounted in the containing cavity. According to the power storage module of the energy storage system, a sealing structure is formed through the independent shell, and the battery pack is installed in the independent shell, so that the containing cavity in the independent shell is completely isolated from the outside, and the situation that the energy storage system cannot work normally due to false fire alarms caused by wind and sand entering the containing cavity is avoided; meanwhile, the situation that thermal runaway of a single power storage module induces thermal runaway of other power storage modules of the energy storage system can be avoided, large fire disasters caused by fire chain reactions are avoided, and fire disaster losses and fire extinguishing difficulty are reduced.

A window with built-in vertical type rotary glass comprises a window body arranged on a wall, a motor and a controller. A moving opening is formed in the middle of the thick glass arranged in the middle of the window body, a movable glass block is arranged in the moving opening, and the top of the movable glass block is connected with the driving end of the motor through an upper rotating shaft; the controller comprises a metal outer shell, a metal inner shell, an input power line, an output power line, an n-shaped insulating plate and an input paraffin block, and an input conductive sheet connected to the input power line and an output conductive sheet connected to the output power line are vertically and oppositely arranged in the metal inner shell. By means of the window with the built-in vertical type rotary glass, automatic aeration cooling can be carried out in fires, fire losses can be conveniently lowered, and the window is simple in structure, high in practicability, low in cost and high in controllability.

A disclosed tube for high-voltage wires is prepared from the following raw materials in parts by weight: 25-50 parts of polyvinylchloride resin, 1-3 parts of polytetrafluoroethylene wax, 2-4 parts of N,N-diethylaniline, 3-6 parts of disodium methylenebisnaphthalenesulphonate, 2-5 parts of aluminium hydroxide, 3-7 parts of flint clay powder, 4-8 parts of calcium phosphate, 2-6 parts of polyethylene glycol fatty acid ester, 2-5 parts of cross-linking agent TAC, 4-7 parts of valerian oil, 5-9 parts of poly(brominated styrene), and 4-8 parts of stannic oxide. The provided tube for high-voltage wires is good in anti-creeping property, high in pressure-resistant strength, excellent heat resistance and high impact resistance.

The invention discloses a fire protection system for a valve side sleeve of an extra-high voltage converter transformer and a using method. The system comprises an oil collecting pit, a compressed airfoam generating device, a foam dry tube, a zoning valve and a compressed air foam spray system. The fire protection system adopts the independent oil collecting pi filled with pebble beds, effectively retrains the valve side sleeve, a valve side lifting base and transformer oil flow spread after an accident occurs, reduces a fire scale to the greatest extent, reduces fire loss, and protects safety of adjacent facilities and a valve hall. The compressed air foam spraying system adopts a spray tube without a spray head and a branch tube, and clings to a fireproof wall, so that damages, on a foam release device, of valve side sleeve explosion impact are reduced to the greatest extent, and safety reliability of the system is improved, and therefore, the technical problem of fire control of the valve side sleeve of the extra-high voltage converter transformer is completely solved, the fire protection system can be used for the extra-high voltage converter transformer, and also can be usedfor other converter transformers.

The invention discloses an automatic fire alarm device for an engine compartment fire of an excavator and an excavator. The device comprises a main control module installed in an engine compartment, atemperature sensor, a smoke sensor, a carbon monoxide sensor and a wireless communication module, wherein the temperature sensor, the smoke sensor, the carbon monoxide sensor and the wireless communication module are connected with the main control module; the temperature sensor is used for acquiring temperature information in the engine compartment; the smoke sensor is used for acquiring smoke concentration information in the engine compartment; the carbon monoxide sensor is used for acquiring concentration information of carbon monoxide in the engine compartment; and the main control moduleis used for judging whether an alarm condition is reached according to the temperature information, the smoke concentration information and the concentration information of the carbon monoxide and sending alarm information to a terminal of an owner and / or a server through the wireless communication module when the alarm condition is reached. According to the technical scheme, whether the alarm condition is reached is judged according to the real-time information of the temperature, the smoke concentration and the carbon monoxide, and the alarm information is sent to the owner and / or the server when the alarm condition is reached.