12results about How to "Prevent deflagration" patented technology

The invention discloses a control method, device and equipment for a gas device and a medium, the method comprises the steps that a heating signal is responded, a smoke exhaust fan is controlled to operate at a high gear within first preset time, the gears of the smoke exhaust fan comprise the low gear and the high gear, and the types of the heating signal comprise the low-gear heating signal and the high-gear heating signal; after the first preset time is up, the smoke exhaust fan is controlled to operate at a low gear, and meanwhile the ignition needle is controlled to start preheating; after the ignition needle reaches the preset temperature, the gas valve is controlled to operate at a low gear; and if it is detected that ignition succeeds, gear switching of a gas valve and a smoke exhaust fan is controlled based on the type of the heating signal. According to the technical scheme provided by the embodiment of the invention, the effects of preventing ignition deflagration and enabling fuel gas to be fully combusted can be achieved.

The utility model discloses a kind of boiler combustion pressure early warning devices, it is related to pressure early warning device technical field, including shell and display screen;Shell: top surface is hinged with shell cover, the front side of shell cover is fixed with display screen, the left and right sides of shell are evenly provided with heat dissipation hole, processor is fixed in the inside of shell, the bottom surface of shell is equipped with adjusting unit, the inside of adjusting unit is respectively installed with multispectral flame detector and pressure sensor;Wherein, it further includes controller, the boiler combustion pressure early warning device, flexible telescopic positioning of detector is realized by adjustable winding shaft structure, adapt to different monitoring needs;Protective unit is used to protect sensor cable, ensure stable operation under harsh environment in combination with heat dissipation hole and dust screen;Integrated pressure and flame double monitoring function, data are analyzed by processor and are linked with audible and visual alarm, wireless transmission module, realize local and remote double early warning.

This utility model discloses a dual-source multi-combustion system, comprising: a boiler, wherein an exhaust gas burner, a pulverized coal silo burner, and at least two air-coal burners are provided; a plurality of main combustion coal mills are connected to one or more air-coal burners; a plurality of pulverized coal storage mills are connected to the remaining air-coal burners in the boiler; a gas drying system is connected to the main combustion coal mills and the pulverized coal storage mills respectively, for drying and conveying the coal ground in the main combustion coal mills and the pulverized coal storage mills to form primary air-coal mixture; a plurality of fine powder separators are used to separate the primary air-coal mixture to form pulverized coal and exhaust gas; a plurality of exhaust gas fans are used to collect exhaust gas, and the outlets of the exhaust gas fans are connected to the exhaust gas burner and the pulverized coal storage mill respectively; a plurality of pulverized coal silos are used to collect the pulverized coal generated in the fine powder separators; a hot medium conveying system is used to convey the pulverized coal in the pulverized coal silos to the pulverized coal silo burners, and the gas drying system is also connected to the hot medium conveying system to preheat the pulverized coal conveyed to the pulverized coal silo burners.

The invention discloses a waste lithium battery black powder crushing and sorting device and a recovery process in the technical field of waste lithium battery black powder recovery, and the waste lithium battery black powder crushing and sorting device comprises a feeding unit, an electrode material dissociation unit and a sorting and enriching unit which are sequentially arranged along the material flow direction, comprising an active material collection system, a metal current collector separation system and an electrode active material purification system, and inert gas protection and temperature monitoring are introduced in the core link of crushing and dissociation, so that the risk of combustion explosion is eradicated fundamentally, the chemical stability of an electrode material is guaranteed, and the service life of the electrode material is prolonged. Secondly, shearing and crushing are adopted to optimize the dissociation effect, pneumatic separation, eddy current and magnetic separation multi-stage and precise separation technologies are combined, a returned material crushing closed circuit is innovatively introduced, the black powder collection rate and the separation purity and total recovery rate of copper and aluminum metal are greatly improved, and finally, the recovery rate of the copper and aluminum metal is increased. All the units are integrated into a continuous automatic system, and maximum utilization of resources is achieved.

The invention relates to the technical field of high-low voltage power distribution cabinets, in particular to a high-low voltage power distribution cabinet with a protection structure, which comprises a cabinet body, a cabinet door is rotatably mounted on the front side surface of the cabinet body, an inner frame is fixedly connected to the front inner wall of the inner cavity of the cabinet body, the side surface of the cabinet door is in contact with the side surface of the inner frame, and a closed groove is formed in the side surface of the cabinet body. A closed groove is formed in the top of the cabinet body, the closed groove penetrates through heat dissipation holes in the side face of the cabinet body, a nitrogen discharging mechanism is installed at the top of the cabinet body, and a sealing mechanism used for sealing the heat dissipation holes is installed at the top of the cabinet body. Therefore, the air in the dead angle area in the cabinet body is stirred, the air enters the flowing air flow to be pumped away, the more uniform air pumping effect is achieved, the effect of reducing the oxygen content in the cabinet body is achieved, the fire behavior in the cabinet is inhibited or extinguished in time, and fire expansion is avoided.

The invention provides an oil supply and return fuel oil system for a main combustion chamber ignition performance test and an adjusting method, and belongs to the technical field of aero-engine tests, the oil supply and return fuel oil system comprises an oil storage tank, a fuel oil degassing device, a fuel oil pump, a plurality of flow meters with different measuring ranges, an electric heater, a gas-heat heat exchanger, an electromagnetic three-way valve, an adjustable throttling device and a plurality of adjusting valves, an inlet of the fuel pump is connected with the oil storage tank through the fuel degassing device, one path of an outlet of the fuel pump is connected to an oil return opening of the oil storage tank through the oil return adjusting valve, and the other path of the outlet of the fuel pump is connected to the flow meters with different measuring ranges through the oil supply adjusting valve, the back ends of the plurality of flowmeters with different measuring ranges are gathered and then are respectively connected with a normal-temperature flow path, a low-temperature pipeline and a heating flow path which are respectively formed by a normal-temperature test valve, a low-temperature test valve and a heating test valve which are arranged in parallel, the three flow paths are connected to a first port of an electromagnetic three-way valve, and a second port of the electromagnetic three-way valve is connected to a test piece; and the third port is connected to an oil return port of the oil storage tank through an adjustable throttling device.

This invention belongs to the field of aero-engines and discloses an explosion-proof igniter for aero-engines. It includes: an integrated housing, an upper ball seat, a lower ball seat, a hollow ball head, a baffle plate, a starting nozzle, and an ignition electrode. The integrated housing is cylindrical, with a blind hole on its lower end face, the bottom of which is spherical. The outer wall of the housing has external threads. A starting nozzle connector, an ignition electrode connector, and an oxygen supply pipe connector are respectively located on the upper side of the integrated housing. A starting nozzle and an ignition electrode are installed in the starting nozzle connector and the ignition electrode connector, respectively, and these connectors are connected to the bottom of the blind hole. The oxygen supply pipe connector connects to an oxygen supply line. The upper ball seat is cylindrical, with internal threads on its upper inner wall, and is connected to the integrated housing via these threads. The lower inner wall of the upper ball seat and the inner wall of the lower ball seat form a spherical surface that mates with the hollow ball head. An air intake groove is provided on the side wall of the upper ball seat. The baffle plate is welded inside the upper ball seat and located below the air intake groove.

The application relates to a vacuum rapid-congealing continuous furnace safety door which comprises a door frame arranged at the bottom of a continuous furnace, a maintenance opening arranged at the bottom of the continuous furnace and located in the door frame, a rectangular frame arranged at the front end of the door frame, a door body hinged to one side of the door frame, a plurality of pressing devices arranged on the rectangular frame and used for pressing the door body on the rectangular frame, and an observation window arranged on the door body. The safety door structure provides a preset rapid channel for the bottom of the furnace body. When extreme working conditions such as molten crucible liquid leakage or cooling system water leakage occur, the bottom safety door can be quickly opened to drain water.

The nonmetal pipeline welding device comprises a shell, inserting holes are formed in the two ends of the shell, a welding assembly is arranged in the middle of the shell, the outer walls of the two ends of the welding assembly are connected with the inner wall of the shell through connecting blocks, a cover plate is arranged on the upper portion of the shell, and an air cavity is formed in the bottom of the shell and communicates with the interior of the shell through an air guide pipe. A water inlet valve and a water outlet valve are arranged at the bottom of the side wall of the shell, the water inlet valve is communicated with the water outlet valve through a cooling pipe arranged in the shell, an air outlet of the air guide pipe faces the cooling pipe, and an exhaust pipe is arranged at the upper end of the side wall of the shell. The protective gas is injected into the shell through the gas guide pipe through the gas cavity so as to prevent combustible gas in the shell from burning, and circulating cooling water is injected into the cooling pipe so as to reduce the temperature in the shell and prevent the combustible gas in the shell from burning, so that the risk of explosion generated in the welding process of the non-metal pipe fitting is avoided, and the welding quality of the non-metal pipe fitting is improved. And the welding safety of the non-metal pipe fitting is improved.

The utility model discloses an energy -conserving high -efficient gas stove device, including the gas chamber of receiving fuel gas in the stove body and the infrared line honeycomb combustor of being located on the gas chamber, and the premixing device of being connected with the air and fuel gas of gas chamber according to the proportion mixing, and the gas pipe line of being equipped with between the gas outlet of premixing device and gas chamber. Premixing device includes fan, and the air inlet of fan's air port is equipped with venturi, and venturi is equipped with air inlet and fuel gas inlet pipe, and fuel gas inlet pipe is equipped with proportional valve. The utility model has realized the accurate control of firepower size in the industrial food processing and preparation, has improved the thermal efficiency, and saves energy simultaneously.

The utility model relates to waste and old lithium battery recycling technical field, concretely relates to a waste and old lithium battery continuous crushing system, including hopper, hopper bottom setting feed cavity, setting feeding device on feed cavity, setting negative pressure air port on the inner wall of feed cavity below feeding device, and negative pressure air port is connected with negative pressure fan through negative pressure pipeline, and the secondary pulverizer is connected in proper order with the tearing crusher below feed cavity, and the first positive pressure air port is set up on the secondary pulverizer, and the first positive pressure air port is connected with the first positive pressure nitrogen gas fan through the first positive pressure pipeline, the second positive pressure air port is set up on the tearing crusher, and the second positive pressure air port is connected with the second positive pressure nitrogen gas fan through the second positive pressure pipeline, the utility model discloses can prevent waste and old lithium battery broken tail gas to be sent to the atmosphere, reduces the pollution, avoids the production of deflagration in the system operation process, and the system safety is high, and the next batch waste and old lithium battery is broken without waiting for a batch waste and old lithium battery to break down, and the system can not be interrupted and runs, and the work efficiency is high.

The application provides a direct ignition method and device of a hydrogen-doped / pure hydrogen gas turbine, an electronic equipment and a storage medium. The method comprises the following steps: air is introduced into a premixing nozzle channel and a combustion chamber of the gas turbine, hydrogen-doped / pure hydrogen fuel is output from a corresponding duty nozzle of the gas turbine, the hydrogen-doped / pure hydrogen fuel is ignited to generate a duty flame at the duty nozzle, the hydrogen-doped / pure hydrogen fuel is output from the premixing nozzle, the hydrogen-doped / pure hydrogen fuel is mixed with air in the premixing nozzle channel and then enters the combustion chamber, and the mixture of the hydrogen-doped / pure hydrogen fuel and the air in the combustion chamber is ignited by the duty flame. Thus, by introducing air into the combustion chamber first, igniting the mixture introduced into the combustion chamber after the stable duty flame is formed in the combustion chamber by the duty flame, the backfire and deflagration of the hydrogen-doped / pure hydrogen fuel in the premixing nozzle channel can be effectively avoided, the ignition cost of the existing dual-fuel mode of the gas turbine is reduced, and the safety of the fuel ignition of the gas turbine is improved.