Mixed jet fire-fighting device and mixing method thereof

The invention discloses a mixed jet fire-fighting device and a mixing method thereof, and the device comprises a shell which is a cylindrical shell with two open ends; the spraying assembly is arranged in the shell and comprises a nozzle which is arranged at the front end of the shell and surrounds the inner wall of the shell; the powder conveying assembly comprises a material conveying pipeline extending into the shell from the rear end of the shell, and the outlet end of the material conveying pipeline is arranged behind the nozzle; the fan is fixedly arranged at the rear end of the shell and is arranged behind the outlet end of the material conveying pipeline; after fire extinguishing agent powder is blown away through the fan, the fire extinguishing agent powder can be rapidly mixed with water mist sprayed by the nozzle arranged in front, a gas pressure storage tank is omitted through the axial flow fan, the feeding assembly and the storage bin, the effects of sustainable spraying and ...

Automatic control method of turbofan cannon fire extinguishing system

The invention discloses an automatic control method of a turbofan cannon fire extinguishing system, which comprises the following steps: a turbofan cannon control unit presets a fire extinguishing control mode, and when a fire occurs in a transformer substation, the turbofan cannon control unit monitors fire position information and sends a control instruction to a local control unit; the local control unit receives the control instruction and sends the working state information of the turbofan cannon to the turbofan cannon control unit; the local control unit drives the turbofan cannon fire extinguishing device to execute corresponding actions according to the control instruction and controls the turbofan cannon fire extinguishing device to move to a fire source target angle position; and after the turbofan cannon fire extinguishing device is in place, the turbofan cannon fire extinguishing device extinguishes fire according to the fire extinguishing control mode. According to the invention ...

Automatic fire extinguishing method of spray jet synergistic fire extinguishing device

The invention discloses an automatic fire extinguishing method of a spray jet synergistic fire extinguishing device, and belongs to the technical field of fire fighting. Comprising the following steps: S1, fire detection; s2, fire behavior analysis; s3, sorting fire points; s4, the detection equipment outputs fire information; s5, searching fire for the second time; and S6, fire extinguishing through cooperation of gun fog. When a transformer fire accident occurs in an unattended transformer substation, the image processing host identifies multi-fire-point combustion and sorts the fire extinguishing priorities of the multiple fire points, the optimal fire extinguishing injection method can be formulated according to the fire scene, and the fire extinguishing efficiency is improved.

Method for preparing nylon powder by employing DMF

The present invention discloses a preparation method of nylon powder by making use of DMF. The method is that nylon resin is dissolved in the N-dimethylformamide (DMF) solvent, so as to prepare the nylon powder by high temperature, pressure keeping, cooling and drying, the high temperature is controlled at 145DEG C to 290DEG C, the pressure is 0.7 to 1.5MPa; the preparation method of the nylon powder which is provided by the present invention has simple equipment, the preparation process is easy to be operated, the purchase of the solvent is convenient, and the solvent can be recovered and utilized, the particle size of the obtained nylon powder product can be modulated, the granule is spherical approximately, the powder liquidity is good, and the specific surface area is large. The obtained various nylon powders according to the present invention can be used as the nucleating agents of polymer, coating powder of electrostatic spraying technology, powder for magnetic materials and so on ...

Flame obstacle avoidance system for turbofan monitor fire truck

The invention relates to a flame obstacle avoidance system for a turbofan cannon fire truck. Comprising a fire fighting truck, a flame recognition mechanism, a flame positioning system, a fire extinguishing mechanism and an automatic driving system. The fire fighting truck comprises a truck body which is provided with wheels and a water tank. The wheels are provided with brakes; the fire fighting truck is provided with an automatic driving system which is used for controlling the fire fighting truck to reach a preset fire extinguishing position along a preset route. The flame recognition mechanism collects images in front of the fire fighting truck in the running process, judges whether flames exist in front of the fire fighting truck or not according to the collected image information, and triggers the flame positioning system to be started when judging that the flames exist. The flame positioning system analyzes the position of the flame on the route according to the image sent by the ...

Inorganic anti-bacterium mildewproof additive, preparation method and application thereof

The invention discloses an inorganic anti-bacterium mildewproof additive, a preparation method and application thereof. The additive is mineral powder containing Ag element and long chain alkyl ammonium salts, and is characterized in that the mineral powder is turface or vermiculite power, and, by weight percentage, comprises 1.5 to 7.0 percent of the Ag element in the mineral powder, and 5 to 30 percent of the long chain alkyl ammonium salts in the mineral powder. The preparation method comprises the following steps: carrying out sodium treatment on the mineral powder; adsorbing Ag ions among laminations of the mineral powder; introducing the long chain alkyl ammonium salts into the laminations of the mineral power carrying Ag; carrying out organic intercalation treatment on the turface or the vermiculite carrying Ag by amphipathy performance of the long chain alkyl ammonium salts. Compared with inorganic antibacterial agents carrying Ag independently and supported by the long chain alkyl ...

Turbofan cannon head control verification device

The invention discloses a turbofan cannon head control verification device which comprises a turbofan cannon control unit, a local control unit and a turbofan cannon body, the turbofan cannon control unit is in communication connection with the local control unit, and the local control unit is connected with the turbofan cannon body through a communication line and a signal hard wiring line; the turbofan cannon control unit is used for sending an instruction for controlling operation of a turbofan cannon and monitoring turbofan cannon information; the local control unit is used for executing the instruction sent by the turbofan cannon control unit, controlling the turbofan cannon to make corresponding actions and uploading turbofan cannon information to the turbofan cannon control unit; the turbofan cannon body executes corresponding actions through the cannon head, and the actions comprise horizontal rotation and vertical rotation. A set of automatic control device is formed through the ...

Method for preparing nylon powder by employing DMF

Crystal form of KYb (MoO4) 2 and preparation method and application thereof

The invention provides a crystal form of KYb (MoO4) 2 as well as a preparation method and application thereof, and belongs to the field of heat insulation and demagnetization refrigeration materials. The crystal form of the KYb (MoO4) 2 has the advantages of good heat insulation, demagnetization and refrigeration performance, good stability, high density and the like, and most importantly, mK-level ultra-low-temperature refrigeration can be realized.