123results about How to "Easy to extinguish" patented technology

A contact device includes a pair of fixed contactors fixed to one side of an insulation container with a predetermined space therebetween and having a columnar shape with a tip end contact surface protruding at lease inside the insulation container, and a movable contactor disposed to be capable of contacting with and separating from the pair of fixed contactors. Surfaces of the pair of fixed contactors facing the movable contactor are formed of annular peripheral walls having a concave part at a center thereof. An annular arc is formed between the annular peripheral wall and the movable contactor when the contact device is in an open state.

The invention discloses a multi-gap self-swelling strong-air-current longitudinal blow-out arc anti-thunder protecting device which comprises a longitudinal blow-out arc device arranged at an insulator string earthing terminal through a grounding side connecting hardware fitting, a grounding side electrode arranged on the longitudinal blow-out arc device, and a guide line side electrode arranged on an off-contact guide line. A protecting gap formed by the grounding side electrode and the guide line side electrode is parallel to an insulator string. The longitudinal blow-out arc device comprises an arc extinguishing device body and arc extinguishing tubes. The arc extinguishing device body is provided with a plurality of through holes for placing the arc extinguishing tubes. An angle formed by two arc extinguishing tubes which are arranged in the arc extinguishing device body is 90 degrees, and end portions of the two arc extinguishing tubes are in contact with each other. Each arc extinguishing tube is in a spiral shape. The grounding side electrode is connected with a first arc extinguishing tube through a guide line, and the grounding side connecting hardware fitting is connected with a last arc extinguishing tube through a guide line. The device is simple in structure, low in manufacture cost, safe and reliable, effectively reduces the power system transmission line thunderstrike tripping rate and the accident rate, and improves the stability of a power system.

The invention discloses a pulverized fuel ash-cement foam material for controlling the spontaneous combustion of coal and a preparation method of the pulverized fuel ash-cement foam material. The pulverized fuel ash-cement foam material is prepared from the following components by weight: 10-40 % of sulfoaluminate superfine cement, 10-40 % of pulverized fuel ash, 0.5-0.9 % of carboxymethyl cellulose, 0.1-0.6 % of sodium fluoride, 0.2-0.6 % of melamine, 0.1-0.4 % of aluminum sulfate, 0.3-0.6 % of lauryl sodium sulfate, 0.4-0.6 % of sodium dodecyl benzene sulfonate, 0.5-0.8 % of saponin and the balance of water. The foam material is high in expansion rate of foam, long in stabilizing time, low in rate of water loss, good in plugging performance, and very suitable for extinguishment underground a coal mine. The pulverized fuel ash-cement foam material has the advantages of being low in cost, good in plugging performance, high in strength, simple to construct and the like.

The invention discloses a multifunctional power distribution cabinet for a communication base station. The cabinet comprises a cabinet body, and a partition plate is arranged in the cabinet body. Thespace between the upper end face of the partition plate and the cabinet body is filled with a fire extinguishing agent. An installation cylinder is inserted into the partition plate, a sliding block is connected into the installation cylinder in a sealing and sliding mode, and a linkage mechanism is arranged on the sliding block. A plurality of ventilation openings are symmetrically formed in thecabinet body, and a plurality of closing mechanisms corresponding to the ventilation openings are arranged on the cabinet body. A rotating shaft is installed in each ventilation opening through a torsional spring, and a fan is arranged on each rotating shaft. According to the invention, external energy input is not needed, the fans are driven to rotate periodically by gasification and liquefactionof evaporated liquid, so that hot air in the cabinet body is exhausted intermittently, external cold air is sucked in intermittently, the flowing speed of the air in the cabinet body is increased, the cooling and heat dissipation effects are obvious, and energy conservation and environmental protection are achieved. Meanwhile, when a fire occurs in the cabinet body, the fire can be extinguished in time, and spreading of the fire is avoided.

A printed material (5) has a transparent base member (51), a first image layer (52) formed on the base member, an intermediate layer (53) formed on the first image layer, and a second image layer (54) formed on the intermediate layer. The intermediate layer has a lower white background layer (531) positioned above the first image layer, a light blocking layer (532) positioned above the lower white background layer, and an upper white background layer (533) positioned above the light blocking layer. In the printed material, a thickness of the light blocking layer is uneven in conformity with undulation of the first image layer, and therefore a surface of the intermediate layer which is in contact with the second image layer is flat. With this structure, it is possible to prevent or suppress the undulation of the first image layer from appearing in the second image layer.

A fault interrupter and load break switch includes a trip assembly configured to automatically open a transformer circuit electrically coupled to stationary contacts of the switch upon the occurrence of a fault condition. The fault condition causes a Curie metal element electrically coupled to at least one of the stationary contacts to release a magnetic latch. The release causes a trip rotor of the trip assembly to rotate a rotor assembly. This rotation causes ends of a movable contact of the rotor assembly to electrically disengage the stationary contacts, thereby opening the circuit. The switch also includes a handle for manually opening and closing the electrical circuit in fault and non-fault conditions. Actuation of the handle coupled to the rotor assembly via a spring-loaded rotor causes the movable contact ends to selectively engage or disengage the stationary contacts.

[Object] To provide a polycarbonate resin composition that is thin but has high flame retardancy and surface hardness for which a hard coating layer is not required, causes less gas generation in molding, has excellent heat resistance, preservation stability, and recyclability, and does not contain bromine and phosphate flame retardants, and to provide a molded product thereof.[Solving Means] A polycarbonate resin composition includes, as a main resin material, an aromatic polycarbonate resin occupying 85 to 95 mass % of the main resin material and having a weight-average molecular weight of 37000 to 55000 in polystyrene equivalent molecular weight, and a polystyrene resin occupying 15 to 5 mass % of the main resin material and containing no rubber component. A resin component other than the above may be contained resulting from recycled materials as long as the characteristics of the resin composition are not impaired. A polyfluoroolefin resin, an organic sulfonate flame retardant, and a silicon flame retardant are added to the resin material. The aromatic polycarbonate resin composition is molded into a predetermined shape.

A fault interrupter and load break switch includes a trip assembly configured to automatically open a transformer circuit electrically coupled to stationary contacts of the switch upon the occurrence of a fault condition. The fault condition causes a Curie metal element electrically coupled to at least one of the stationary contacts to release a magnetic latch. The release causes a trip rotor of the trip assembly to rotate a rotor assembly. This rotation causes ends of a movable contact of the rotor assembly to electrically disengage the stationary contacts, thereby opening the circuit. The switch also includes a handle for manually opening and closing the electrical circuit in fault and non-fault conditions. Actuation of the handle coupled to the rotor assembly via a spring-loaded rotor causes the movable contact ends to selectively engage or disengage the stationary contacts.

There are provided silicon single crystal, silicon wafer, and epitaxial wafer having a sufficient gettering effect suitable for a large-scale integrated device. The silicon single crystal which is suitable for an epitaxial wafer is grown with nitrogen doping at a concentration of 1x1013 atoms / cm3 or more, or with nitrogen doping at a concentration of 1x1012 atoms / cm3 and carbon doping at a concentration of 0.1x1016-5x1016 atoms / cm3 and / or boron doping at a concentration of 1x1017 atoms / cm3 or more. The silicon wafer is produced by slicing from the silicon single crystal, and an epitaxial layer is grown on a surface of the silicon wafer to produce the epitaxial wafer. The present invention provides an epitaxial wafer for a large-scale integrated device having no defects in a device-active region and having an excellent gettering effect without performance of an extrinsic or intrinsic gettering treatment, which is a factor for increasing the number of production steps and production costs.

There are provided silicon single crystal, silicon wafer, and epitaxial wafer having a sufficient gettering effect suitable for a large-scale integrated device. The silicon single crystal which is suitable for an epitaxial wafer is grown with nitrogen doping at a concentration of 1x1013 atoms / cm3 or more, or with nitrogen doping at a concentration of 1x1012 atoms / cm3 and carbon doping at a concentration of 0.1x1016-5x1016 atoms / cm3 and / or boron doping at a concentration of 1x1017 atoms / cm3 or more. The silicon wafer is produced by slicing from the silicon single crystal, and an epitaxial layer is grown on a surface of the silicon wafer to produce the epitaxial wafer. The present invention provides an epitaxial wafer for a large-scale integrated device having no defects in a device-active region and having an excellent gettering effect without performance of an extrinsic or intrinsic gettering treatment, which is a factor for increasing the number of production steps and production costs.

A fault interrupter and load break switch includes a trip assembly configured to automatically open a transformer circuit electrically coupled to stationary contacts of the switch upon the occurrence of a fault condition. The fault condition causes a Curie metal element electrically coupled to at least one of the stationary contacts to release a magnetic latch. The release causes a trip rotor of the trip assembly to rotate a rotor assembly. This rotation causes ends of a movable contact of the rotor assembly to electrically disengage the stationary contacts, thereby opening the circuit. The switch also includes a handle for manually opening and closing the electrical circuit in fault and non-fault conditions. Actuation of the handle coupled to the rotor assembly via a spring-loaded rotor causes the movable contact ends to selectively engage or disengage the stationary contacts.

A fault interrupter and load break switch includes a trip assembly configured to automatically open a transformer circuit electrically coupled to stationary contacts of the switch upon the occurrence of a fault condition. The fault condition causes a Curie metal element electrically coupled to at least one of the stationary contacts to release a magnetic latch. The release causes a trip rotor of the trip assembly to rotate a rotor assembly. This rotation causes ends of a movable contact of the rotor assembly to electrically disengage the stationary contacts, thereby opening the circuit. The switch also includes a handle for manually opening and closing the electrical circuit in fault and non-fault conditions. Actuation of the handle coupled to the rotor assembly via a spring-loaded rotor causes the movable contact ends to selectively engage or disengage the stationary contacts.

A fault interrupter and load break switch includes a trip assembly configured to automatically open a transformer circuit electrically coupled to stationary contacts of the switch upon the occurrence of a fault condition. The fault condition causes a Curie metal element electrically coupled to at least one of the stationary contacts to release a magnetic latch. The release causes a trip rotor of the trip assembly to rotate a rotor assembly. This rotation causes ends of a movable contact of the rotor assembly to electrically disengage the stationary contacts, thereby opening the circuit. The switch also includes a handle for manually opening and closing the electrical circuit in fault and non-fault conditions. Actuation of the handle coupled to the rotor assembly via a spring-loaded rotor causes the movable contact ends to selectively engage or disengage the stationary contacts.

A fault interrupter and load break switch includes a trip assembly configured to automatically open a transformer circuit electrically coupled to stationary contacts of the switch upon the occurrence of a fault condition. The fault condition causes a Curie metal element electrically coupled to at least one of the stationary contacts to release a magnetic latch. The release causes a trip rotor of the trip assembly to rotate a rotor assembly. This rotation causes ends of a movable contact of the rotor assembly to electrically disengage the stationary contacts, thereby opening the circuit. The switch also includes a handle for manually opening and closing the electrical circuit in fault and non-fault conditions. Actuation of the handle coupled to the rotor assembly via a spring-loaded rotor causes the movable contact ends to selectively engage or disengage the stationary contacts.

A bipolar pulsed power supply is provided in which, while effectively restricting the rise in current at the time of arcing which directly leads to the generation of splashes and particles, the occurrence of overvoltage at the time of polarity reversal is prevented. The power supply has a bridge circuit constituted by switching elements SW1 through SW4 connected to positive and negative DC outputs from a DC power supply source. The operation of the switching elements is controlled to output in a bipolar pulsed mode at a predetermined frequency to a pair of electrodes which come into contact with a plasma. There is provided an output-characteristics-switching circuit which switches the output such that, when outputting to the electrodes, the output to the electrodes has initially constant-voltage characteristics and subsequent output to the electrodes has constant-current characteristics.

The invention belongs to the field of environment sanitation facilities, and particularly relates to a water collecting type inflaming retarding garbage can. The water collecting type inflaming retarding garbage can comprises a base, the upper end of the base is fixedly connected with a can body, a can cover is rotatably connected into the can body, a water storage cavity is formed in the base, anannular water collecting groove is formed in the upper end of the base, and communicates with the water storage cavity through multiple water conveying channels, multiple water sucking pipes are arranged on the side wall of the can body in a penetrating manner, the input ends of the water suction pipes are attached to the bottom face of the water storage cavity, the output ends of the water suction pipes are arranged on the inner side wall of the can body, multiple Z-shaped air exhaust channels are formed in the inner side wall of the can body, two ends of the Z-shaped air exhaust channels are arranged on the inner and outer side walls of the can body, an annular cavity is formed in the inner side wall of the can body, a piston ring is in sliding seal connection into the annular cavity, and the interior of seal space formed by the lower side wall of the piston ring and the annular cavity is filled with evaporation liquid. Collected rainwater is used for achieving fire extinguishing ofthe garbage can, and the garbage can is energy-saving, environment-friendly, high in speed and capable of avoiding large danger.

To improve the way in which a fuel cell is installed, especially in the case of fuel cells on board electric traction vehicles, the oxygen needed for supplying the fuel cell is produced in situ by separating the nitrogen from the ambient air continuously, without a change of state. Thus, an electric power pack comprises a stack of electrochemical cell elements each possessing a cathode and an anode, in electrochemical coupling relationship with an electrolyte, and an electrical output circuit suitable for connecting the cathode and the anode through a load, a device for delivering fuel to the anode and an on-board oxygen generator based on a separator, for separating the oxygen and nitrogen of the ambient air without a change of state, in order to supply the cathode of said cell elements. According to a preferred embodiment, the separator is of the nitrogen pressure swing adsorption type. In one embodiment, the separator is supplied with compressed air by a first compressor and the oxygen delivered at its output is compressed further in order to supply the fuel cell. The whole assembly makes it possible to achieve an improved performance compromise for vehicle applications in which great autonomy is required.

A fault interrupter and load break switch includes a trip assembly configured to automatically open a transformer circuit electrically coupled to stationary contacts of the switch upon the occurrence of a fault condition. The fault condition causes a Curie metal element electrically coupled to at least one of the stationary contacts to release a magnetic latch. The release causes a trip rotor of the trip assembly to rotate a rotor assembly. This rotation causes ends of a movable contact of the rotor assembly to electrically disengage the stationary contacts, thereby opening the circuit. The switch also includes a handle for manually opening and closing the electrical circuit in fault and non-fault conditions. Actuation of the handle coupled to the rotor assembly via a spring-loaded rotor causes the movable contact ends to selectively engage or disengage the stationary contacts.

Disclosed is a secondary air offset whirl pulverized coal burner for a W flame boiler. The problems of high NOx discharge amount, high fly ash combustible matter content, slag-bonding to water walls of front and back walls of a lower combustion chamber and high temperature corrosion of the W flame boiler which is provided with an existing whirl pulverized coal burner on an arch are solved. A circular ring inner secondary air stop block in the circumferential direction is added in inner secondary air on a dividing cylinder of primary air and inner secondary air of the whirl pulverized coal burner; the angle of the circular ring inner secondary air stop block in the circumferential direction is 180 degrees; a circular ring outer secondary air stop block in the circumferential direction is added in outer secondary air on a dividing cylinder of the inner secondary air and the outer secondary air; the angle of the circular ring outer secondary air stop block in the circumferential direction is 180 degrees; the boundary line in the diameter direction of the circular ring inner secondary air stop block and the circular ring outer secondary air stop block is parallel to the front and back walls of the boiler; the circular ring inner secondary air stop block and the circular ring outer secondary air stop block are mounted on one side close to the center of a combustion chamber. The secondary air offset whirl pulverized coal burner is used for the W flame boiler.

The invention relates to a fire extinguishing shrapnel for urban high-rise buildings, applied to multiple-launching fire extinguishing bombs for high-rise buildings, belonging to the technical field of firefighting. The fire extinguishing shrapnel for high-rise buildings comprises a fuse, an outer shell component, a bullet, a central booster and a missile wing device, wherein the outer shell comprises a fuse seat, a connection piece, an outer shell and a rear seal cover; the bullet comprises a bullet shell body, a bottom plate, a central tube, an upper cover and a push plate; the central booster comprises a central detonating fuse; and the missile wing device comprises a brake parachute which is fixed in the missile wing device by a piston; the bottom plate is a hollow cylinder, the innerside of the bottom plate is provided with screw threads, and the upper surface of the bottom plate is provided with block slots; the outer shell is milled with a window in circumferential direction. The fire extinguishing shrapnel for high-rise buildings provided by the invention has the advantages of simple structure, large load capacity, being launched by a multi-barrel mortar or a low-altitudedefense skynet launch system, high fire accuracy, being capable of extinguishing fire on the building walls or in the buildings, and being beneficial to suppressing local fire intensity, extinguishing all kinds of fire, and saving people and property in the fire timely.

The invention relates to the technical field of fire control and extinguishment and specifically relates to a novel high-efficiency general type compound foam fire extinguishing agent. The novel high-efficiency general type compound foam fire extinguishing agent is prepared from the preparation raw materials in parts by weight: 20 to 30 parts of a foaming agent, 1 to 5 parts of a stabilizer, 20 to30 parts of a thickening agent, 0.5 to 3 parts of a fluorocarbon surface active agent, 2 to 8 parts of urea, 10 to 20 parts of an antifreeze agent, 2 to 8 parts of a cosolvent and 0.5 to 5 parts of an aid.

The invention relates to a switch cabinet with high fireproof performance, and belongs to the technical field of electrical equipment. A partition net and a cover plate are arranged on the top of theswitch cabinet body. The two ends of the cover plate are provided with connecting rods through downward vertical extending. The top of the side plate is provided with a second through hole opposite tothe lower part of the partition net. The bottom of the side plate is provided with a first through hole. A first baffle plate is correspondingly arranged at the position of the connecting rods relative to the first through hole. A second baffle plate is arranged at that second position of the connecting rod relative to the second through hole. An air bag is arranged between the partition net andthe cover plate. Sodium carbonate power is arranged in that air bag, When the interior of the switch cabinet is on fire, the fire source burns and explodes the air bag, the sodium carbonate powder inthe air bag extinguishes the fire and the cover plate moves downward accordingly so that the first baffle plate seals the first through hole and the second baffle plate seals the second through hole,the internal and external air is isolated, the fire source is enabled to be extinguished, the internal fire source can be extinguished without opening the cabinet door and the fire prevention performance of the switch cabinet is increased.

The invention relates to a high-efficiency antiflaming polycarbonate composition compounded by phosphazene compound. The antiflaming polycarbonate composition is prepared from polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), (aldehyde group-phenoxy)-cyclotriphosphazene series compound, antioxidant and anti-drip agent of fluoride by melting and compounding above-mentioned materials in certain proportion.

The invention discloses an electric extinguishing device including a frame and an extinguishing box body arranged on the frame. The bottom of the extinguishing box body is provided with a medicine liquid storage tank, the interior of the medicine liquid storage tank is provided with a pump, the upper of the medicine liquid storage tank is provided with a mixing water pipe, the water inlet end of the mixed water pipe is matched with the water outlet of the water pipe of a fire hydrant, and the water outlet of the pump is connected into the mixing water pipe by a medicine liquid conveying pipe;the extinguishing box body is internally provided with a wind-up roller, the wind-up roller is located at one end of the outlet of the mixing water pipe, an auxiliary water pipe is arranged on the wind-up roller in a surrounded way, the auxiliary water pipe is connected with the mixing water pipe, and the side wall of the extinguishing box body is provided with a through hole using for the auxiliary in and out; a battery and a controller are arranged inside the extinguishing box body, and the side wall of the extinguishing box body is provided with a switch, a display screen and a charging interface. The electric extinguishing device has the advantage of quickly extinguishing a fire when cooperating with the fire hydrant.

The invention relates to a preparation method of a safe and energy-saving liquid fuel. The liquid fuel comprises the following components in parts by weight: 1000 parts of methanol, 0.5-2.5 parts of acetone, 1-6 parts of ethanol, 0.1-3 parts of camphor, 0.01-0.125 part of ferrocene, 0.002-0.003 part of potassium permanganate, 0.1-5 parts of white sugar, 0.1-3 parts of sodium chloride, 5-10 parts of solvent and 250-430 parts of water. Compared with the traditional liquid fuel, the liquid fuel obtained by the preparation method of the invention is smokeless, tasteless, non-toxic, and dirtless, and has high thermal efficiency and low use-cost; the liquid fuel is free from influence of the operating temperature in use and has no requirements in pressure; and the liquid fuel has high safety factor because fire resulting from the leakage is easy to put out when leakage occurs.