69 results about "Flammable liquid" patented technology

The utility model provides a platform for testing spreading performance of fire extinguishing foam. The platform comprises a test box body with an upper opening, a heating assembly and a test assembly, the test box body comprises a visual loading container and a hollow support located at the bottom of the visual loading container, and the visual loading container is used for loading target combustible liquid; the heating assembly comprises a heating plate, the heating plate is arranged between the bottom of the visible loading container and the hollow support, and the heating plate is used for heating the target combustible liquid in the visible loading container; a foam spray head is further arranged above the visible loading container; and the test assembly is used for recording corresponding data in the foam spreading performance test. The utility model aims to provide a spreadability test platform for different types of fuel oil surfaces and fire extinguishing foam spreadability tests for high-temperature fuel oil surfaces and different types of high-temperature fuel oil combustion surfaces, so as to improve the authenticity of simulating petrochemical fire scenes.

The invention discloses a fire extinguishing method for a low-boiling-point flammable liquid storage tank. Fire control and cooling: applying high-stability compressed air foam to quickly control the fire of the low-boiling-point flammable liquid aiming at the fire of the low-boiling-point flammable liquid storage tank, and covering the surface of the low-boiling-point flammable liquid to form a foam blanket, so that the liquid is gradually cooled until the boiling point of the low-boiling-point flammable liquid is lower than the boiling point of the low-boiling-point flammable liquid; only oil steam and residual flames on the surface of the foam blanket remain; fire extinguishing: quickly spraying and releasing a dry powder extinguishing agent aiming at low-boiling-point flammable liquid oil steam residual flames on the surface of the foam blanket, and completely extinguishing the oil steam residual flames on the surface of the foam blanket by utilizing the excellent chemical inhibition fire extinguishing performance of the dry powder extinguishing agent; and after the fire of the low-boiling-point flammable liquid storage tank is completely extinguished, high-stability compressed air foam is continuously applied, a foam blanket is formed on the surface of the low-boiling-point flammable liquid, the low-boiling-point flammable liquid is continuously cooled, and reburning is effectively prevented. The fire extinguishing method is very efficient for extinguishing a low-boiling-point flammable liquid fire source.

An electrical system includes a battery pack with a battery cell. The battery cell includes a housing having at least one side defining a chamber, an electrode assembly disposed within the chamber, and an insulating assembly disposed within the chamber between the electrode assembly and at least one side of the housing. The insulating assembly includes a heat-absorbing material enclosed by a plastic cover. A non-flammable liquid is stored within the heat-absorbing material. The plastic cover is configured to shrink when a temperature of the plastic cover exceeds a threshold temperature, thereby releasing the non-flammable liquid from the heat-absorbing material into the chamber to reduce heat flow from outside the housing to the electrode assembly.

A pump for non-flammable liquids has an improved mounting for the motor which facilitates the relatively quick and easy removal of the motor from the pump. The pump has a main body which is hollow and cylindrical. A motor housing is connected to the main body by threads at a first end and has a removable end cap on its second end. The electric motor is located in said motor housing and secured when the end cap is on the motor housing. An electronics housing has a battery adapter plate, a switch, and a discharge port, and encloses wires and electronics such that the motor pumps the liquid from the end cap, through the motor housing and the main body, and out of the discharge port when the switch is turned on.

A flame mitigation device for flammable liquid containers includes a cylindrical body with vertical fine mesh screens in the air chamber and horizontal fine mesh screens in the fluid chamber. The air chamber and fluid chamber are separated so fluid and air do not mix or interfere with each other whilst fluid is being poured from the bottle, through the flame mitigation device. When attached to a flammable liquid container, the device provides improved fluid flow and prevents flame propagation, ensuring safe storage and handling of flammable liquids.

A method of safely mixing a hydrocarbon with an oxidant is provided. The hydrocarbon and oxidant are saturated with a non-flammable liquid in pre-mix zones that are flooded with the non-flammable liquid and fluidly connected to a common mixing zone that is partially flooded with the non-flammable liquid. The saturated hydrocarbon and oxidant combine within the common mixing zone forming bubbles of a homogeneous gas mixture of hydrocarbon and oxidant, preferably in a ratio of hydrocarbon to oxidant that is outside of the flammability limit, that can exit the non-flammable liquid into a headspace where it can be retrieved for use in an oxidative reaction process such as oxidative dehydrogenation.

The invention relates to the technical field of civil fuels, in particular to a civil ether-based fuel which is formed by mixing C5 and dimethyl ether. The content of the C5 is 10-30% by weight, the content of the dimethyl ether is 70-90% by weight, the C5 adopted by the civil ether-based fuel is a low-pressure flammable liquid and can still be stored in a common low-pressure steel drum after being mixed with the dimethyl ether, a high-pressure container is not needed, and the leakage and explosion risks are reduced; and during combustion, 'air-light hydrocarbon mixed gas' generated by a special gas generator is saturated gas, is easy to mix with air and is not easy to gather together, so that the occurrence of emergency accidents such as explosion or poisoning and the like is reduced.

A firefighting foam concentrate that is free or substantially free of fluorosurfactants is disclosed. The firefighting foam concentrate comprises water and from 25% to 38% by weight of a surfactant blend comprising at least one selected cationic quaternary ammonium compound, at least one selected alkyl amine oxide nonionic surfactant, and at least one selected alkyl sulfate anionic surfactant. Each selected surfactant has an average alkyl or alkylene carbon chain length of 8-10 carbon atoms. The firefighting foam concentrate may be combined with other firefighting foam components to form a firefighting foam composition. Also disclosed is a method of fighting a fire comprising aerating the firefighting foam composition containing the surfactant blend to form a firefighting foam that is applied to a fire or the surface of a volatile flammable liquid.

The utility model relates to the technical field of dies, in particular to a metal combined die for an assembly type prefabricated fire dike. Comprising linear dies and at least eight linear dies, the four right-angle dies and the at least eight linear dies are spliced to form a square combined die, the four right-angle dies are located at the four corners of the square combined die respectively, and at least one linear die is spliced to each of the two ends of each right-angle die. And gaps are respectively formed in the periphery of the square combined die. The square fire dike is reasonable and compact in structure and convenient to use, the four right-angle type molds and the at least eight linear type molds are formed in a reverse mold mode and spliced into the square fire dike after being disassembled, flammable liquid can be prevented from diffusing all around when leakage occurs, fire spreading during fire is limited, and therefore the influence range of the fire is reduced, and the service life of the fire dike is prolonged. The device has the advantages of being safe, reliable and good in stability, operation is convenient, working efficiency is greatly improved, and production cost is reduced.

The invention belongs to the technical field of intrinsic safety of a gas-liquid phase mixing process, and particularly relates to a gas atomizing and mixing device. The device comprises a main pipeline, a first working part and a second working part. The first working part comprises a porous material membrane tube, and the porous material membrane tube comprises a membrane tube base body and an inner hole penetrating through the membrane tube base body in the axial direction of the porous material membrane tube. The second working part is arranged in the main pipeline, is of a Venturi tube type structure, and comprises a feeding section, a reducing section and an expanding section which are connected in sequence. The device can effectively atomize the combustible liquid and effectively vaporize atomized combustible liquid drops, and can remarkably reduce the burning and explosion risk caused by poor atomization and vaporization of the combustible liquid and non-uniform mixing of combustible steam and oxidizing gas in chemical production.

The utility model belongs to the technical field of rubber pipes, and particularly relates to a flame-retardant rubber pipe which comprises a base, a sliding groove is formed in the base, two worm wheels are rotationally installed in the sliding groove, clamping rods are installed in the sliding groove and located on the two sides of the worm wheels in a sliding mode, threaded rods are fixedly installed at the two ends of the worm wheels, and the screwing directions of threads on the two threaded rods are opposite. When the whole device is used, the inner rubber layer, the framework layer, the protective layer and the flame-retardant layer can be clamped, so that the inner rubber layer, the framework layer, the protective layer and the flame-retardant layer cannot shake during use, the stability during use is guaranteed, and it is guaranteed that flammable liquid in the device cannot leak to the outside to cause combustion; meanwhile, multiple groups of inner rubber layers, framework layers, protective layers and flame-retardant layers can be fixed and limited, the application range of the device is enlarged, it is ensured that the position of the device is fixed firmly, and it is ensured that flammable liquid in the device cannot leak to the outside to cause combustion.

Provided is a technology of preventing an increase in size of a treatment plant, which may be caused when a safety clearance for the prevention of spread of a fire is set, and restraining an increase in designed fire-extinguishing water usage. A treatment plant for handling a flammable liquid includes: an equipment placement region in which a plurality of equipments configured to handle the flammable fluid are placed, the equipment placement region being divided into four or more firewater supply sections. A plurality of fire-extinguishing water supply facilities are provided to the firewater supply sections, respectively, the fire-extinguishing water supply facilities each being capable of, when a fire occurs in the firewater supply sections, simultaneously supplying fire-extinguishing water to a fire-occurrence section and an adjacent section.

A safety cabinet includes an enclosure and at least one door to selectively seal the enclosure. The safety cabinet can be used to store, for example, flammable liquids, flammable waste, corrosive agents, pesticides, or combustible waste. The safety cabinet includes a heat-actuated damper including a body, a valve plate, and a pivot assembly. The valve plate is disposed within a passageway of the body such that the valve plate is movable between an open position and a closed position. The pivot assembly includes a biasing system adapted to bias the valve plate to the closed position and a fusible link interconnected between the body and the biasing system to limit movement of the valve plate from the open position to the closed position. The fusible link is configured to melt at a predetermined temperature, thereby allowing the biasing system to move the valve plate to the closed position.

The utility model provides an inflammable liquid combustion test system and a triethyl aluminum combustion test system. The inflammable liquid combustion test system comprises a first inert gas storage tank, a three-way pipeline and a second inert gas storage tank, the first inert gas storage tank is communicated with the inflammable liquid storage tank through a pressurizing pipeline, and a control valve is arranged on the pressurizing pipeline; a first branch of the three-way pipeline is communicated with the flammable liquid storage tank, a second branch of the three-way pipeline is communicated with the combustion disc, and flammable liquid in the flammable liquid storage tank is guided into the combustion disc through the first branch and the second branch; the second inert gas storage tank is connected with a third branch of the three-way pipeline; each branch of the three-way pipeline is provided with a valve assembly. According to the utility model, residual flammable liquid in the pipeline can be guided into the combustion disc by using inert gas pressure, so that test equipment is prevented from being damaged by combustion of the residual liquid in the pipeline, and the safety risk of a combustion test is greatly reduced.

The positive pressure multi-dose combined foam fire extinguishing system comprises a foam proportioning device, a mixed gas supply device, a gas-liquid mixer and a foam releasing device; a mixed liquid flow meter is connected with the inlet of a liquid flow regulating valve through a pipeline, the liquid flow regulating valve is connected with one inlet of the gas-liquid mixer, and the other inlet of the gas-liquid mixer is connected with the mixed gas supply device; the mixed gas supply device provides air mixed gas of chemical extinguishing agent, and the mixed gas supply device controls the proportion of the mixed gas injected into the foam mixed liquid according to the size of the foam mixed liquid flow meter; the gas-liquid mixer fully mixes the foam mixed liquid with the mixed gas to foam, and forms fire extinguishing foam with physical and chemical inhibition functions, which is delivered to the foam releasing device through a pipeline. The scheme combines the fire control and cooling and temperature reduction performance of compressed air foam on low-boiling-point flammable liquid fire and the advantages of chemical gas foam on oil vapor afterfire fire extinguishing, and is fast and efficient.

The utility model relates to a combustible liquid automobile loading safety protection facility which comprises symmetrically-arranged door-shaped main beams, an auxiliary beam provided with a track and arranged between the door-shaped main beams, a sliding block arranged on the auxiliary beam in a sliding mode, a safety rope arranged at the lower end of the sliding block, a safety lock arranged at the end of the safety rope and comprises a lock body, and a plurality of grooves are formed in the side wall of the lock body. A groove is formed in the door-shaped main beam, a lock column is hinged into the groove, the free end of the lock column is connected with an angle hook through a spring, an upper loading platform with a personnel protection device is placed between the door-shaped main beams, a limiter is arranged on the personnel protection device and comprises a base, a limiting column is arranged on the base, and an inserting hole matched with a lock body is formed between the limiting column and the base in a penetrating mode. A plurality of hook holes matched with the angle hooks are formed in the periphery of the base. According to the utility model, the working efficiency is greatly improved, more comprehensive and reliable protection is provided for operators, the working risk is reduced, and the working safety standard is improved.

The application relates to the technical field of heat-sensitive materials, and discloses a film-coated heat-sensitive material and a preparation method thereof. The application is characterized by the following steps: preparing a base material, cutting the base material into a required shape and size, coating a heat-sensitive dye, uniformly spraying the heat-sensitive dye on the base material, drying the base material coated with the heat-sensitive dye, preparing a finished product, cutting the dried base material into a required final product shape and size, and obtaining the film-coated heat-sensitive material. The modified polyurethane and boron element in the phosphorus-containing flame retardant have good flame-retardant effects. In the combustion process, the phosphorus element in the phosphorus-containing flame retardant decomposes into a non-flammable liquid film of phosphoric acid, further generates metaphosphoric acid and poly-metaphosphoric acid, these substances form a protective layer on the material surface, isolate oxygen and high temperature, and have the flame-retardant effect. The quaternary ammonium salt in the quaternary ammonium chain extender has good antibacterial effect.

The present invention provides an innovative mitten for people working outside handling chemicals, solvents, or dirty materials in liquid form. The main body of the mitten comprises two layers including an outer layer made of polyester microfibers and an inner layer made of rubberized material, such as a polyurethane foam. The polyurethane foam has a mixture of open and closed cells, creating a waterproof membrane. The microfiber material in the outer layer of the mitten has a moisture wicking rubberized material adhered to the inside keeping water, oil, conditioner, wax, detailers, tire shines and any other non-flammable liquids off your hands.

Procedures and equipment for carrying out tests on the drainage of flammable liquids are provided.A device for performing tests of the drainage of flammable liquids on a test object comprises a backbone configured to receive a coupon; a first wall structure configured to engage with the backbone to form a first chamber; a second wall structure configured to engage with the backbone to form a second chamber opposite the first chamber; a nozzle device configured to spray a liquid into the first chamber and onto the test object; a vacuum device configured to create a pressure differential between the first and second chambers; a leg securing the backbone to a base; and a vibrating platform configured to apply an excitation input to the test object.

The utility model relates to the field of liquid taking devices, in particular to an automatic gas protection liquid taking flow path system for flammable liquid and a liquid taking device, which comprises a gas source, the gas source is connected into an inlet of a pressure reducing valve through a gas pipe, an outlet of the pressure reducing valve is connected with a pressure sensor, and the pressure sensor is connected with an inlet of an electromagnetic valve I; an outlet of the electromagnetic valve I is connected with an inlet of the electromagnetic valve II, a normally-open end of the electromagnetic valve II is connected with the damping pipe I, a normally-closed end of the electromagnetic valve II is connected with the damping pipe II, two outlets of the damping pipe I and the damping pipe II are connected with two ends of the tee joint respectively, and the last end of the tee joint is connected with the air outlet pipe; the input end of the infusion pump is connected with the common end of the selector valve, the output end of the infusion pump is provided with a liquid outlet pipe, the selector valve is provided with a plurality of channels, and each channel is connected with a liquid storage tank; and the oxygen sensor extends into the liquid taking container. According to the utility model, the liquid taking range is large in span, and after high-flow gas purging, small-flow protective gas is continuously used for continuous protection in and after the liquid taking process, so that the continuous safety and reliability of the whole process are ensured.

This invention relates to a system and method for testing the atomization and ignition of flammable liquids upon impact with a hot surface, belonging to the field of combustion characteristic testing technology. It overcomes the limitations of existing testing equipment in exploring critical atomization conditions and the impact of atomization degree on combustion efficiency, while also solving the problem of difficult visualization of combustion flames. The solution is as follows: the testing system includes a droplet generation component for generating single droplets with controllable particle size, and a droplet atomization and ignition component for atomization upon impact with a hot surface and subsequent ignition. The droplet generation component includes an injection pump, an adapter valve, and a coaxial needle. The droplet atomization and ignition component includes a base, a guide rod, a clamping arm, and a pneumatic ignition component. The control system is electrically connected via data cables to a control switch, injection pump, heating controller, high-speed camera, and computer at the gas cylinder outlet. Data collected using the testing system and method provided by this invention provides a basis for studying droplet atomization characteristics and combustion mechanisms.

The utility model relates to the technical field of food machinery, and discloses a barbecue machine liquid sauce automatic dripping mechanism which comprises a collecting pipe, a branch pipe and a sauce pump used for conveying liquid sauce to the collecting pipe, the branch pipe comprises a non-return pipe, a flow dividing pipe and a dripping pipe which are sequentially communicated from top to bottom, a non-return piece is arranged at the position of the non-return pipe, and the dripping pipe is connected with the flow dividing pipe. And when the dripping and sprinkling of the liquid sauce are stopped, the liquid sauce is kept in the branch pipe under the action of atmospheric pressure. According to the scheme, dripping is carried out through the dripping pipe, the detonation risk of atomization caused by spraying of flammable liquid sauce is avoided, and detonation accidents cannot be caused; meanwhile, the non-return pipe and the collecting pipe are controlled to be disconnected in time through the non-return piece, the cleaning problem caused by waste and disordered dripping is avoided, the pipe emptying phenomenon caused by liquid backflow is avoided, oil, sauce, water and the like can be dripped in time when spraying is conducted again, and the requirement for timely and accurate dripping is met.

A method of fighting a fire, the method includes aerating a firefighting foam composition to form an aerated firefighting foam; administering the aerated firefighting foam to a fire or applying the aerated firefighting foam to a surface of a volatile flammable liquid; wherein the firefighting foam composition includes a surfactant component comprising an anionic surfactant, a zwitterionic surfactant, optionally a nonionic surfactant, or a mixture of any two or more thereof; an aliphatic alcohol-based component comprising at least two compounds selected from C8-C14-aliphatic alcohols and ethoxylates of C10-C14-aliphatic alcohols having an average of no more than about 6 ethylene oxide units; and at least about 30 wt. % water.

A method of fighting a fire includes aerating a firefighting foam composition to form an areated firefighting foam; administering the aerated firefighting foam to a fire or applying the aerated firefighting foam to a surface of a volatile flammable liquid; wherein: the firefighting foam composition includes a sugar component comprising at least about 50 wt. % of a monosaccharide, sugar alcohol, or a mixture of any two or more thereof; a surfactant component comprising an anionic surfactant and a zwitterionic surfactant; and a suspension agent comprising microfibrillated cellulose.

The utility model relates to the technical field of static electricity eliminators, and discloses a flammable liquid pipeline static electricity eliminator which comprises a static electricity eliminator body, a connecting block fixedly installed on the side wall of the static electricity eliminator body and a connecting assembly arranged on the side wall of the static electricity eliminator body. The connecting assembly comprises a connecting mechanism installed on the side wall of the static electricity eliminator body, an auxiliary mechanism is installed on the side wall of the static electricity eliminator body and located on the left side of the connecting mechanism, the connecting mechanism comprises a stabilizing block, and the stabilizing block is fixedly installed on the side wall of the static electricity eliminator body. The static electricity eliminator solves the problems that when an existing static electricity eliminator is used, the position of the static electricity eliminator needs to be fixed through bolts, due to the fact that the internal space of a pipeline is limited, the installation process is tedious, and a large amount of time needs to be consumed in the process.

The present invention discloses a pretreatment method for waste mixed with aqueous liquid and flammable liquid, comprising the following steps: S1: According to the standard test method of ASTM D5058-90 waste water compatibility screening analysis, perform the compatibility test of aqueous liquid, flammable liquid waste and amphiphilic adsorption carrier in advance; S2: Put the flammable liquid waste and amphiphilic adsorption carrier into the pretreatment center for pretreatment; S3: According to the feeding amount in step S2, add the same amount of aqueous liquid waste and stir well; S4: Supplement the amphiphilic adsorption carrier, take samples after sufficient stirring, and test according to the standard test method of ASTM D4982 waste potential flammability screening analysis until the samples are not flammable, then stop adding the amphiphilic adsorption carrier; S5: Convey the formed waste to the incineration system through a conveying device. The method adopted by the present invention can fundamentally change the current situation of incineration disposal of flammable liquid hazardous waste with high solid content adsorbed, and has good popularization value and market prospect.

The invention relates to the technical field of fire extinguishing agents, in particular to an environment-friendly aqueous film-forming foam fire extinguishing agent and a preparation method and application thereof. The aqueous film-forming foam extinguishing agent is prepared from the following raw materials: a compound bio-based surfactant, compound bio-based polyol and a foam-stabilizing and anti-reburning nano-composite agent. According to the environment-friendly aqueous film-forming foam extinguishing agent disclosed by the invention, the easily biodegradable compound bio-based surfactant is used as a core component, and the freezing resistance, the antibacterial property and the environmental protection property are synergistically enhanced by utilizing the compound bio-based polyol; a foam-stabilizing anti-reburning nano-composite agent compounded based on layered iron-aluminum-magnesium trimetal hydroxide, nano magnesium aluminum silicate and hydrophobic nano silicon dioxide aerogel is introduced, the reburning resistance is remarkably improved through multiple mechanisms of physical foam stabilization, heat insulation and chemical flame retardance, all the raw materials are non-toxic and environmentally friendly, and the cost is low. The problem of pollution of a traditional fluorocarbon surfactant and the problems that a bio-based surfactant is poor in film-forming property and poor in burning resistance are solved, and the surfactant is suitable for fighting fire disasters caused by non-water-soluble combustible liquid.

The application relates to the technical field of barrier material testing, and discloses a barrier explosion material testing system which comprises a gas distribution mechanism, a dust spraying mechanism, an ignition mechanism, a first stage, a second stage, a third stage and a data acquisition mechanism; the gas distribution mechanism is connected with the first stage and the third stage; the first stage is also used for placing accumulated dust; the dust spraying mechanism is connected with the first stage and the third stage respectively and is used for injecting flammable liquid, combustible dust cloud or aerosol into the first stage and the third stage; the ignition mechanism is used for igniting combustible gas, flammable liquid, combustible dust cloud, aerosol or accumulated dust in the first stage; a barrier explosion material layer is arranged in the second stage; the data acquisition mechanism is connected with the first stage and the third stage respectively and is used for acquiring image, pressure and temperature data in the first stage and the third stage; and the application is convenient for evaluating the efficiency of the barrier explosion material layer.