33results about How to "Reduce the power of the explosion" patented technology

The invention provides a functional heat insulation device for a lithium battery, comprising a functional material which is a material having a fire extinguishing function and a heat absorption and cooling function, and the functional heat insulation device is fixedly mounted on a side surface of a lithium ion cell. Compared with the existing insulation cotton technology, the device can more effectively prevent the heat transfer phenomenon between lithium ion cells, reduce the energy produced by lithium battery deflagration, and avoid the occurrence of lithium ion battery ignition, thus effectively reducing the chain reaction caused by lithium ion battery ignition or explosion, and improving the safety performance of a lithium ion battery to a large extent.

The invention provides a high-power class-3 coal mine permissible water-gel explosive. The explosive is prepared from the following substances in parts by weight: 25-32 parts of an ammonium nitrate solution having the concentration of 72%-82%, 35-40 parts of a methylamine nitrate solution having the concentration of 83%-86%, 9-15 parts of solid ammonium nitrate, 8-12 parts of sodium nitrate, 0.8-1.5 parts of a gelatinizing agent, 0.1-0.3 part of a cross-linking agent, 2-4 parts of a sensitizer and 5-10 parts of a flame inhibitor, as well as 0.02-0.04 part of a high-performance flame inhibitor. The production method of the explosive comprises the following steps: firstly, preparing the methylamine nitrate solution and the ammonium nitrate solution, then orderly adding the methylamine nitrate solution, the ammonium nitrate solution, the solid ammonium nitrate, the sodium nitrate, the gelatinizing agent, the flame inhibitor, the sensitizer and on the like to a mixing tank, and adjusting the density to the range of 1.05-1.15g / cm<3> and controlling the pH value within the range of 5.0-5.8 after mixing evenly; next, adding the cross-linking agent, thereby obtaining the high-power class-3 coal mine permissible water-gel explosive. The production method of the high-power class-3 coal mine permissible water-gel explosive has the advantages of simple production process and low production cost; the explosive is stable in performance, the coal mine gas safety is high, the explosive capacity is big, and the blasting operation effect is improved.

The embodiment of the invention provides a color agent for fireworks and crackers and a preparation method of the color agent, wherein the color agent does not contain metal powder, and a combustibleagent is composed of azotetrazolebiguanide and 5-aminotetrazolenitrate. According to the embodiment of the invention, the azotetrazolebiguanide and 5-aminotetrazolenitrate are compounded to replace metal powder used in the prior art, so that the explosion power of fireworks and crackers is reasonably reduced, the safety is improved, and gas is mainly generated after the azotetrazolebiguanide and 5-aminotetrazolenitrate are combusted, so that generation of solid residues is reduced and environment protection is enhanced; what is more, the azotetrazolebiguanide and 5-aminotetrazolenitrate are compounded to replace metal powder, and the overall combustion heat of the medicament can be controlled within a specific range, so that the color purity of the medicament after combustion is improved,and the ornamental effect is improved.

The present invention discloses explosive black powder that is used for fireworks. The black powder contains the following components with the following weight portions: 40 to 75 portions of potassium perchlorate, 0 to 35 portions of potassium nitrate, 1 to 5 portions of potassium dichromate, 5 to 15 portions of sulfur, 5 to 25 portions of charcoal, 0.5 to 2 portions of carbon black, and 5 to 20 portions of potassium terephthalic acid or potassium acid phthalate. The explosive black powder is made of the components according to the ratio. No metal material or toxic substances are used. The explosive black powder has the advantages of low mechanical sensitivity, excellent stability, large explosive scale, excellent explosive sound, black medicine, easily prepared raw materials and relatively low cost. Thus the explosive black powder is the ideal explosive black powder.

The invention provides a cluster type forest fire extinguishing bomb with the characteristics of multiple fuzes and self-deceleration, comprising several cluster type forest fire extinguishing bomb monomers; Superfine dry powder fire extinguishing agent, paper cartridge case, ignition fuze, rotating shaft, eccentric spoiler; the detonating agent is tightly fixed in the center of the cluster forest fire extinguishing bomb through the paper agent case, and the superfine dry powder fire extinguishing agent is filled in the paper cartridge case and the single center of the cluster forest fire extinguishing bomb. Between the paper cartridges, 12 ignition fuzes are evenly distributed on the paper cartridges and are fixedly connected to the detonating cartridges. The rotating shaft is fixed on the outer top of the paper cartridge, and the eccentric spoiler is fixed on the rotating shaft and is folded and attached to the paper. The surface of the shell can be freely rotated with the rotating shaft, and the eccentric spoiler can be opened by the wind. The invention has the characteristics of strong maneuverability, fast response, wide coverage, high hit accuracy and high safety, realizes rapid and efficient forest canopy fire, and can also be flexibly used for confined space fire.

The embodiments of the present invention provide a color agent for fireworks and firecrackers and a preparation method thereof. The color agent for fireworks and firecrackers does not contain metal powder, wherein the combustible agent is composed of azotetrazolium biguanide and 5-aminotetrazole nitrate. The color agent for fireworks and firecrackers provided by the embodiment of the present invention replaces the metal powder used in the prior art by compounding azotetrazolium diguanidine and 5-aminotetrazole nitrate, which not only reasonably reduces the explosive power of fireworks and firecrackers, but also improves safety. properties, and the combustion of azotetrazolium diguanide and 5-aminotetrazole nitrate is mainly gas, which reduces the generation of solid residues and improves environmental protection. More importantly, the use of azotetrazolium diguanidine and The 5-aminotetrazole nitrate compound replaces the metal powder, which can control the overall combustion heat of the agent within a specific range, thereby improving the color purity of the agent after burning and improving the ornamental effect.

The invention discloses a separated type base structure for an aircraft spraying robot. A support oil cylinder, an electric motor, a turntable, balls, a support plate and a spraying robot body mounting seat are arranged in a matched manner, so that a spraying robot body can be made to rotate along with the turntable and can be changed in up-down height; a clamping arm and a clamping column are arranged in a matched manner, so that a left bottom plate and a right bottom plate can be connected or separated conveniently; the left bottom plate and the right bottom plate can move conveniently by arranged wheels; a protective box, baffles, all protective pipes, all sealing pipe sleeves, an inner protective cover, a gas delivery pipe and an exhaust pipe are arranged in a matched manner, devices needing to be isolated from dust generated during the spraying work can be protected effectively through the made inert gas environment, and potential hazards of combustion and explosion can be eliminated; and anti-explosion sealing layers are arranged, and the anti-explosion sealing layers play a role in sealing and have the effect of reducing the brisance. The separated type base structure has the good isolating and protective effects on a connecting socket, the generation of combustion and explosion accidents is avoided, and moving and mounting are convenient.

The invention relates to an emergency disposal box and an emergency disposal device for an aircraft cabin, comprising a box body and a box cover, the box cover is connected by a plurality of hinges, and the box cover is locked with the box body by a plurality of locks, and the locks It is a stainless steel spring lock. Both the box body and the box cover are composed of a three-layer structure, and the outer layer is a heat-insulating layer, the middle layer is a heat-insulating energy-absorbing layer, and the inner layer is a high-temperature resistant layer. A first observation window and a second observation window are provided, first handles are respectively provided on the left end surface and the right end surface of the box body, and a second handle is provided at the center of the upper surface of the box cover, and the upper surface of the box cover is located on the second handle. Both sides of the hand are respectively provided with an exhaust port and a water injection port. The invention has the beneficial effects of providing an emergency disposal box and an emergency disposal device for aircraft cabins that are light in structure, convenient in operation, safe and reliable.

The invention discloses a transformer fire protection device used in a chemical industrial park, which comprises a flat ground, a foundation pit is opened on the upper end surface of the flat ground, a protective steel box is placed in the flat ground and below the foundation pit, and the protective steel box is placed below the foundation pit. The upper end surface of the steel box is movably provided with a movable seat, and a transformer assembly is fixedly installed on the movable seat, and four sets of sheaths are symmetrically and fixedly installed on the bottom of the protective steel box, and guide columns are movably installed in the sheath and the The upper end of the guide column is welded to the movable seat, and a cylinder is erected at the middle position of the bottom of the protective steel box. The transformer fire protection device used in the chemical industrial park according to the present invention drives the movable seat to descend through the power of the cylinder, enters the protective steel box, and transfers the transformer on the ground downward to the protective steel box, and at the same time, the cover is automatically closed. Close and seal the transformer, prevent the spread of fire and prevent explosion due to fire, applicable to different working conditions, and bring better prospects for use.

The invention relates to the technology of nitrogen-fine water mist explosion suppression, in particular to an intelligent nitrogen-fine water mist system for lowering implosion damage and subsequentcombustion of a naval ship. The intelligent nitrogen-fine water mist system includes a water tank, a water pump, a base, a high-pressure nitrogen bottle set, a control valve, an intelligent control table, a cabin, a water-mist concentration monitor, a nitrogen concentration monitor, an acceleration sensor, a two-phase flow nozzle a and a two-phase flow nozzle b, wherein the water-mist concentration monitor, the nitrogen concentration monitor, the acceleration sensor, the two-phase flow nozzle a and the two-phase flow nozzle b are arranged on the cabin, the two-phase flow nozzle a and the two-phase flow nozzle b are connected to the water pump through a water pipe, the water pump is connected to the water tank through a water pipe and fixed to the base, the two-phase flow nozzle a and the two-phase flow nozzle b are connected to the control valve through an air pipe, the control valve is connected to the high-pressure nitrogen bottle set through an air pipe, the water pump, the controlvalve, the water-mist concentration monitor, and the nitrogen concentration monitor and the acceleration sensor are connected to the intelligent control table through wires.

The invention discloses an acting part of a water-based fire extinguishing bomb. The acting part comprises a detonating device and a bomb body device, wherein the detonating device comprises an impact head and a head screw; an explosive jar, an electric igniting head, an external ignition line, a secondary induction coil, an igniting control printed board and an insulation mechanism are arranged in the head screw; the secondary induction coil, the igniting control printed board and the electric igniting head are connected to achieve an electric detonating manner; the bomb body device comprises a central fixing tube, a micro-explosion throwing and spreading device, and a housing of which the two ends are provided with openings; the micro-explosion throwing and spreading device comprises an inner ignition line, a limiting hose and an explosive tube; the micro-explosion throwing and spreading device is positioned in the central fixing tube; one end of the central fixing tube is fixed to the opening of a front blocking cover through a pressing screw while the other end of the central fixing tube extends into the housing. According to the acting part of the water-based fire extinguishing bomb, the micro-explosion throwing and spreading structure is adopted, so that broken pieces can fly within a short distance after explosion, and the safety can be improved; an impacting and electric detonating manner is achieved in the detonating device, so that all launched fire extinguishing bombs can be detonated and exploded; the insulation mechanism is arranged and can greatly improve the safety of the fire extinguishing bombs during a storage process.

The invention relates to nitrogen-water mist explosion suppression technology, in particular to an intelligent nitrogen-water mist system for reducing ship implosion damage and subsequent combustion, including a water tank, a water pump, a base, a high-pressure nitrogen cylinder group, a control valve, an intelligent Console, cabin, water mist concentration monitor, nitrogen concentration monitor, acceleration sensor, two-phase flow nozzle a and two-phase flow nozzle b, water mist concentration monitor, nitrogen concentration monitor, acceleration sensor, two-phase flow nozzle a The two-phase flow nozzle b is installed on the cabin, the two-phase flow nozzle a and the two-phase flow nozzle b are connected to the water pump through the water pipe, the water pump is connected to the water tank through the water pipe, the water pump is fixed on the base, the two-phase flow nozzle a and the two-phase flow Nozzle b is connected to the control valve through the air pipe, the control valve is connected to the high-pressure nitrogen cylinder group through the air pipe, and the water pump, control valve, water mist concentration monitor, nitrogen concentration monitor and acceleration sensor are connected to the intelligent console through wires.

The invention belongs to the technical field of gasifiers and particularly discloses a thin-walled high-strength crop straw gasifier which comprises a furnace body, a furnace grate, a feeding hole anda gas outlet; the furnace grate is arranged in the furnace body, is used for piling crop straws and divides the interior of the furnace body into two portions; the feeding hole is formed in the upperside of the furnace body and is used for putting the crop straws in the furnace body; and the gas outlet is formed in the upper side of the furnace body and on the right side of the feeding hole andis used for exhausting combustible gas after gasification. For the thin-walled high-strength crop straw gasifier provided by the invention, the using performance of the gasifier can be improved.

The hinge structure comprises two hinge parts which are hinged to each other, the two hinge parts are used for being fixed to respective corresponding target bodies, at least one hinge part is provided with a corresponding energy absorption buffering assembly, the energy absorption buffering assembly comprises a fixed part and a sliding part, and the fixed part is provided with a sliding part. The fixed part is fixed relative to the position of the corresponding target body, and the sliding part is connected with the corresponding hinge part and is in damping sliding fit with the fixed part, so that the hinge part corresponding to the sliding part is fixed to the corresponding target body; when the case explodes, the sliding part can slide for a preset distance relative to the fixed part, so that a certain gap is formed between the target bodies corresponding to the two hinge parts; wherein the target bodies corresponding to the two hinge parts are a case wall and a door body respectively. According to the hinge structure, due to the existence of the energy absorption buffering assembly, a gap can be formed between the door body and the case wall during explosion, pressure is released, and the situation that the door body flies to hurt people is effectively avoided.

The invention provides an explosion-proof device for an industrial powder explosive production line, which includes an explosion-proof box, a cooling conveyor, a discharge conveyor and a liquid cooler. The explosion-proof box is fixed on the outside of the cooling conveyor and the discharge conveyor. There is a through hole at the upper end, and a material inlet is fixedly connected in the through hole. The lower end of the material inlet is connected to the cooling conveyor. The front end of the cooling conveyor is fixedly connected to a motor box, and a motor is fixedly connected to the motor box. The transmission output of the motor The end is fixedly connected with a screw conveying rod, and the outer side of the screw conveying rod is fixedly connected with a spiral conveying leaf. The invention has the function of explosion-proof and explosion-proof, and can effectively prevent machine fragments from splashing and damaging the human body when the explosion-proof machine cannot be fully vented. It can effectively buffer the impact of the explosion and prevent the explosion from igniting, and when one of the sections explodes, the explosion range can be controlled within this section to prevent the explosion from causing chain explosions.

The invention discloses an ultralow-temperature liquid hydrogen storage pressure vessel interlayer space vacuumizing method and device. The vacuumizing method adopts a wire drawing material reducing vacuumizing method and comprises the following steps that: (1), a metal wire is preset: in the manufacturing stage of the ultralow-temperature liquid hydrogen storage pressure vessel, an ultra-long metal wire with a certain volume and weight is put in an interlayer space of the ultralow-temperature liquid hydrogen storage pressure vessel in advance, meanwhile, a micro-perforated hole is formed in the tank wall of an outer container of the ultralow-temperature liquid hydrogen storage pressure container, one end of the metal wire penetrates through the micro-perforated hole from the interior of the interlayer space and then extends out of the tank wall of the outer container, and the metal wire and the micro-perforated hole are in interference sealing fit through wiredrawing; and (2), wire drawing and material reducing are conducted, specifically, the metal wires are pulled from the outside, the metal wires preset in the interlayer space are gradually drawn out in a wire drawing mode, and after wire drawing and material reducing are conducted, the micro-perforated holes where the metal wires penetrate are sealed from the outside through a surfacing method. The vacuum pumping efficiency can be improved, the vacuum pumping energy consumption is reduced, and the vacuum degree of the interlayer space of the ultralow-temperature liquid hydrogen storage pressure container is improved.

The invention provides a lithium battery safety protection device using a liquid-containing heat-insulation board, the lithium battery safety protection device comprises a porous heat-insulation board, the porous heat-insulation board contains a liquid fire extinguishing agent, the porous heat insulation board is externally provided with a leakage-proof outer package, the leakage-proof outer package is closed by a sealing member, and the porous heat-insulating plate and the leakage-proof outer package are fixedly mounted on the side of a lithium ion battery. The present invention also providesa lithium ion battery pack having the lithium battery safety protection device using the liquid-containing heat-insulation board. Compared with the prior art, the lithium battery safety protection device can effectively prevent the heat transfer phenomenon among single lithium batteries, reduces energy generated by the explosion of the lithium battery, and avoids the ignition of the lithium ion battery, thereby effectively reducing chain reaction produced by the ignition or explosion of the lithium ion battery, and greatly improving the safety performance of the lithium ion battery.