300 results about "Flammable gas" patented technology

The present invention relates to a contact combustion gas sensor provided with a coil-exposed detection element for detecting flammable gas leakage, and a method for manufacturing the same, the contact combustion gas sensor being provided with a detection element (210) that reacts with contact gas and a compensation element (260) that does not react with contact gas, the detection element (210) comprising a coil wire (222) and a thermal block (240), the coil wire (222) has a coil shape, an exposed portion of the coil wire (222) that is in direct contact with the outside air performs a direct catalyst combustion reaction with gas in contact with the outside air, and the thermal block (240) is disposed inside the coil wire (222), and a portion of the thermal block (240) is coupled to the coil wire (222) to support the coil wire (222).

The utility model discloses a coal mine fire safety intelligent early warning control module, which belongs to the technical field of coal mine fire safety early warning and comprises a temperature monitoring unit, a gas monitoring unit, a dust monitoring unit, an underground looped network switch, a ground control device and an alarm device. The temperature-sensing optical fibers comprise a distributed temperature-sensing optical fiber host and distributed temperature-sensing optical fibers, and the distributed temperature-sensing optical fibers are laid in the transmission belt and the goaf and can monitor the temperatures of different areas in the mine in real time; the gas monitoring unit comprises a toxic gas monitoring subunit and an inflammable gas monitoring subunit, and can monitor the content of various gases in the mine; according to the coal mine dust monitoring system, the safety of coal mine operation is improved, the safety of workers and equipment is guaranteed, and smooth proceeding of coal mine production and operation is effectively promoted.

The present invention relates to a sulfone compound-based electrolyte and a secondary battery including the sulfone compound-based electrolyte. The secondary battery according to the present invention can suppress gas generation in high temperature or thermal runaway environments or generate non-flammable gas to reduce the risk of ignition or explosion.

The invention relates to the technical field of environmental bin power battery thermal runaway early warning, and discloses a power battery thermal runaway early warning method and system based on multiple physical fields, and the method comprises the steps: S1, collecting the smoke concentration, inflammable gas concentration and temperature of different positions in an environment; s2, respectively converting the collected smoke concentration, flammable gas and temperature into standard values; s3, calculating a smoke concentration predicted value, an inflammable gas concentration predicted value, a temperature predicted value and a temperature rise rate predicted value by using the smoke concentration standard value, the inflammable gas concentration standard value and the temperature standard value respectively; s4, determining an early warning level and the like according to the smoke concentration predicted value, the inflammable gas concentration predicted value, the temperature predicted value and the temperature rise rate predicted value by utilizing an early warning judgment rule; according to the power battery thermal runaway early warning method and system based on the multi-physical field, the power battery thermal runaway risk can be effectively reduced, and personnel safety and equipment safety in places such as an environment bin and a laboratory are guaranteed.

The invention provides a positive electrode active material and a preparation method thereof, a positive plate and a battery. An inner slow-release layer in the positive electrode active material coats at least part of the surface of a positive electrode active material main body, and an outer inhibition layer coats at least part of the surface of the inner slow-release layer; the inner slow-release layer comprises lithium carbonate and M metal oxide, and the outer inhibition layer comprises at least one of nitride, fluoride and oxide of inhibition elements; the inhibiting elements comprise at least two elements in VA, IVA family, IIIA family, IIA family and IVB family. The lithium carbonate in the inner slow-release layer can release non-flammable gas mainly containing CO2, the metal oxide can inhibit release of lattice oxygen in the positive electrode active material main body at high temperature, and the proportion of combustible gas is reduced. The lithium carbonate is provided with a temperature decomposition window, so that the release time of carbon dioxide pressure relief for the first time can be accurately controlled. And the outer inhibition layer can avoid the contact between the positive electrode active material main body and the electrolyte, so that the proportion of the combustible gas is further reduced.

An apparatus for producing glass includes: a recuperator heating a heat transfer medium through heat exchange with a combustion gas emitted from a glass melting furnace; a reactor causing a reverse shift reaction to progress by heating CO2 gas and H2 gas through heat exchange with the heat transfer medium heated by the recuperator and producing at least CO gas from the CO2 gas and the H2 gas; and a burner forming a flame inside the glass melting furnace by burning a flammable gas containing the CO gas produced by the reactor and a oxidizing gas.

The utility model discloses an explosion-proof electric chain hoist for a crane, which relates to the technical field of electric hoists and comprises an electric chain hoist main body used for assisting the crane in safely hoisting and carrying heavy objects, and an air supply cooling mechanism arranged at one end of the electric chain hoist main body. The explosion-proof electric chain hoist for the crane is used for conveying air to cool a main body of the electric chain hoist and isolating dust, inflammable gas and the like in the environment, and when the explosion-proof electric chain hoist for the crane works in the environment containing inflammable and explosive substances through the air supply cooling mechanism arranged at one end of the explosion-proof electric chain hoist, temperature control of equipment is particularly important. The cooling mechanism can help to maintain the motor and other key components within a safe working temperature range, the risk of fire or explosion caused by overheating is reduced, meanwhile, the equipment operates more stably at a proper temperature, faults can be reduced, and the efficiency and reliability of continuous operation are improved.

An electric component box that achieves both safety and cooling inside the electric component box is provided. An electric component box that is mounted in a heat pump unit and includes electric components inside includes an inner box and an outer box. The inner box accommodates a printed circuit board on which the electric components are mounted, and has a sealed structure. The outer box covers the inner box. In the electric component box, since the inflow of gas into the inner box is suppressed, for example, the contact of air containing a pollutant or flammable gas with electrodes of the electric components is also suppressed.

The utility model provides a battery monomer, a battery device and a power utilization device, the battery monomer comprises an electrode assembly, a shell, a pressure relief mechanism, a first insulating part and a filtering part, the shell forms a containing cavity with an opening, the electrode assembly is located in the containing cavity, and a cover body covers the opening; the first insulating part is connected to the surface, facing the electrode assembly, of the cover body, the first insulating part is provided with a first leading-out channel, and the containing cavity is communicated with the pressure relief mechanism through the first leading-out channel. The filter part is arranged on one side, facing the electrode assembly, of the cover body, is connected to the first insulating part and covers the opening of the first lead-out channel, and the filter screen of the filter part is provided with the high-temperature-resistant coating, so that when the battery monomer is subjected to thermal runaway, high-temperature discharged substances are discharged outwards; the solid particles of the high-temperature discharged substance can be filtered by the filtering piece and are not easy to be discharged out of the battery monomer, so that the high-temperature solid particles are not easy to ignite inflammable gas in the high-temperature discharged substance outside the battery monomer, and the reliability of the battery monomer is improved.

An apparatus to evacuate fluid is disclosed herein. The example apparatus includes a pipe to transport flammable gas, the pipe including a first valve fluidly coupled to a first region of the pipe and a second valve fluidly coupled to a second region of the pipe, a ball valve implemented along the pipe between the first region and the second region, and a valve evacuation system to compress the flammable gas from the ball valve and pump the compressed flammable gas to the first region via the first valve when the ball valve is in the closed position such that the flammable gas from the ball valve is not vented to atmosphere.

Device (1) for preventing flashback in a pipe carrying a flammable gas, more particularly a flame trap, wherein the device (1) has a housing (8), with at least one onward flow barrier (9) disposed therein, at least one gas non-return valve (10) disposed therein and at least one sintered body (11) disposed therein, wherein the device (1) comprises a sensor device (2), wherein the sensor device (2) captures and stores data such as the frequency and intensity of flashbacks.

The invention relates to the technical field of hot charcoal co-production furnaces, and provides a vertical hot charcoal co-production furnace based on agricultural and forestry waste, which is characterized in that a carbonization cavity is arranged in a furnace body, two discharge flashboards are arranged at a discharge port in a sliding manner, and the discharge flashboards are used for controlling charcoal to be discharged from the discharge port; one discharging gate plate can discharge charcoal from the carbonization cavity to the cooling area after sliding, and the other discharging gate plate can discharge the charcoal from the cooling area after sliding; according to the scheme, the cooling area is formed between the two sliding flashboards of the discharging port, when the flashboards are opened step by step to discharge charcoal, air can be prevented from entering the carbonization cavity to maintain an anaerobic environment, waste heat generated when the charcoal is cooled can be recycled, carbonization and cooling are conducted synchronously, efficiency is improved, and hot charcoal collaborative output is achieved; the furnace can also collect pyrolysis gas and separate wood gas (carbon monoxide, hydrogen, methane and the like) in the pyrolysis gas, the wood gas belongs to inflammable gas, and the gas is pressurized by a fan and then conveyed to heat-consuming equipment such as a boiler, a drying furnace and a heat-conducting oil furnace, so that hot carbon co-production is realized.

One variation of a system includes a set of electrode modules configured to install a battery storage container storing a set of battery cells, each electrode module configured to generate spark discharge at a pair of gapped electrodes to locally combust flammable gas accumulating proximal the electrode module during a fault event at a battery cell. This variation of the system also includes a discharge control module electrically coupled to the set of electrode modules via a set of ports and configured to: detect an ignition event within the battery storage container responsive to spark discharge at an electrode module in the set of electrode modules; set a frequency for spark discharge at the set of electrode modules in response to detection of the ignition event; and via the set of ports, trigger each electrode module to generate spark discharge at the frequency.

The utility model discloses a pipeline filtering structure of an inflammable gas safety conveyor, which comprises a filter arranged in a conveying pipe, the filter comprises a flow guide main plate, an adsorption paper sheet and a sealing cover, the flow guide main plate is provided with a plurality of flow guide bodies, the flow guide bodies are distributed on the flow guide main plate in a staggered manner, each flow guide body is provided with a flow guide head, and the adsorption paper sheet is arranged on the flow guide head. The directions of the flow guide heads are roughly the same, the adsorption paper piece covers the flow guide body and the flow guide main plate, and the sealing cover is movably arranged on the flow guide main plate covered with the adsorption paper piece. By means of the herringbone or V-shaped design of the flow guide bodies, air flow can enter from the tip end more smoothly, meanwhile, small-range eddy currents are formed on the flow guide bodies, large-mass particles and dust are filtered to a smooth interval through centrifugal force, impurities are further adsorbed through the adsorption paper pieces, and the dust removal efficiency is improved by adjusting the length of the bottom plate and the distribution density of the flow guide bodies. The airflow resistance and the filtering effect can be optimized, airflow smoothness is ensured, and the filtering performance is excellent.

This invention provides an electrolyte based on propylene carbonate, comprising propylene carbonate, triphenyl phosphate, and difluoroethylene carbonate, with a mass ratio of difluoroethylene carbonate:triphenyl phosphate:propylene carbonate = 4.5–6:0.1–1:15–21; the mass percentage of propylene carbonate in the electrolyte is not less than 10%. In this design, PC, TPP, and DFEC are combined to participate in the composition of the electrolyte. The three components work synergistically to weaken the heat generated by the oxygen release reaction at the positive electrode and the heat generated by side reactions, and to reduce the flammable gases generated during the reduction at the negative electrode. Therefore, the electrolyte provided by this design can effectively reduce the heat generated by the reaction and the heat of combustion in the secondary battery, which helps prevent thermal runaway and provides a certain flame-retardant effect during the operation of the secondary battery, thus improving the safety performance of the secondary battery.

The application relates to the field of mixed gas purification and discloses application of gaseous alkane in reducing the risk of combustion and explosion in the deoxidation process of oxygen-containing gas, which comprises: mixing the oxygen-containing gas with hydrogen in the presence of stabilizing gas to perform an oxidation reaction; wherein the stabilizing gas is gaseous alkane, and the oxygen-containing gas contains oxygen and optional other flammable gas. The method for deoxidizing the oxygen-containing light hydrocarbon by hydrogen provided by the application reduces the risk of combustion and explosion of the mixed gas by taking gaseous alkane as the stabilizing gas, adopts the hydrogen-catalyzed reaction to promote the reaction of oxygen in the mixed gas with hydrogen to generate water, achieves the purpose of deoxidation of the oxygen-containing gas, the reaction product is clean, the hydrogen-catalyzed reaction can effectively inhibit the occurrence of carbon deposition on the surface of the catalyst and the generation of carbon oxides, and the hydrogen-catalyzed reaction has strong bearing capacity for the fluctuation of the oxygen content of the raw material gas.

The present invention relates to a zeolite imidazolate framework open nanostructured functional flame retardant and a preparation method and application thereof, belonging to the technical field of advanced functional materials. The present invention provides a zeolite imidazolate framework open nanostructured functional flame retardant having a unique yolk-shell structure, the surface of which has a large number of mesopores and macropore structures added on the basis of the micropore structure of the zeolite imidazolate framework. The presence of a multi-level pore structure is beneficial to the adsorption of flammable gases and toxic and harmful gases during the combustion of polymer materials, and enhances the smoke suppression effect of the flame retardant. There is a good synergistic effect between the ferrocene grafted on the zeolite imidazolate framework and the zeolite imidazolate framework, which can enhance the flame retardant efficiency of the functional flame retardant and at the same time give it excellent ultraviolet absorption ability. In addition, the introduction of ferrocene can effectively improve the compatibility between the functional flame retardant and the polymer matrix, thereby enhancing the mechanical properties of the polymer.

A recreational vehicle having a kitchen area with a stove. The stove includes a stove top surface with an opening in the stove top surface. A burner assembly extends through the opening in the stove top surface. The burner assembly includes a flammable gas supply post and a sparker configured to ignite flammable gas exiting the flammable gas supply post. A gap area extends between a peripheral edge of the opening and an outer periphery of the burner assembly. A metal burner shield is positioned to cover the gap area, with the metal burner shield including a hole for accepting the at least one burner assembly through the hole. The metal burner shield prevents viewing of internal components of the stove through the gap area and reflects heat from the at least one burner assembly upward.

The invention relates to the field of intelligent alarm systems, in particular to an artificial intelligence alarm system based on a visual image sensor. According to the artificial intelligence alarm system based on the visual image sensor, when the combustible gas monitor in the gas inlet pipe monitors that the concentration of combustible gas exceeds the standard, the audible and visual alarm immediately gives an alarm to inform a worker to evacuate, and meanwhile, the powder conveying mechanism releases color developing fluorescent powder outwards through the gas outlet pipe; the visual image monitoring device intelligently recognizes the current direction source and diffusion direction of the combustible gas, evacuated workers are warned not to mistakenly enter the marked area, meanwhile, the spraying pipe continuously sprays spraying liquid into the mine hole, and the concentration of the combustible gas is reduced. According to the artificial intelligence alarm system based on the visual image sensor, the technical problem that a worker easily enters a combustible gas convergence area by mistake to cause a poisoning phenomenon due to the fact that the worker cannot observe the flow diffusion and convergence direction of combustible gas in the evacuation process is solved.

A two-component synergistic flame-retardant modified toughening epoxy adhesive and its preparation method are disclosed. The adhesive is divided into component A and component B, which are stored separately. When used, component A and component B are mixed at a mass ratio of 100:80-150 and cured by heating. By mass, component A comprises: a base epoxy resin, a biphenyl-type phenolic epoxy resin, and surface-modified silica. By mass, component B comprises: an anhydride curing agent, surface-modified silica, and anthracene methyl quaternary ammonium salt additive. The introduced biphenyl structure possesses both flame-retardant and char-forming properties; the anthracene methyl quaternary ammonium salt additive can catalyze char formation and release non-flammable gases during combustion. The synergistic effect of these two components significantly improves flame-retardant performance, meeting the high flame-retardant requirements of motor packaging; the rigid structure of the biphenyl-type phenolic epoxy resin can disperse stress under external forces, achieving toughening.

The utility model relates to the technical field of energy storage systems, in particular to a box body and cell explosion-proof valve combined structure and a battery pack, the box body and cell explosion-proof valve combined structure comprises a box body, a cover plate, a cell and a cell outer explosion-proof valve, the cover plate covers the box body, and the cell outer explosion-proof valve is arranged on the cover plate. According to the utility model, the structure of the upper box body is optimally designed, the explosion-proof valve is fixedly arranged at the top of the box body, the lower surface of the explosion-proof valve is over against the explosion-proof valve in the battery cell, and the battery cell is directly discharged to the top from the box body after the valve is opened, so that combustible gas is quickly and effectively discharged, and the flammable and combustible gas is prevented from being accumulated to cause deflagration; the safety risk is reduced. The explosion-proof valve can solve the technical problem that combustible gas at the top of the battery box still cannot be discharged after the explosion-proof valve is opened.

This invention discloses a control system for an intelligent inspection robot for stormwater and sewage pipelines, comprising a microcontroller unit, a multi-sensor module, an image acquisition module, a communication module, and a power module. Through multi-sensor collaborative perception and intelligent decision-making mechanisms, it integrates multi-dimensional data such as images, distance, and environmental data, and employs adaptive path planning and obstacle avoidance algorithms, making it suitable for autonomous inspection tasks in complex pipeline environments. The image acquisition module integrates a high-definition camera and a WiFi module; the distance detection unit combines ultrasonic and infrared ranging sensors to achieve complementary ranging and improve detection accuracy; the environmental monitoring unit uses gas sensors to detect the concentration of toxic and flammable gases such as ammonia and sulfides in the pipeline in real time, and automatically triggers an early warning when the concentration exceeds the standard. This effectively solves the problems of existing pipeline robots, such as single sensor detection methods, poor environmental adaptability, and insufficient intelligence, improving inspection efficiency and system reliability, and reducing manual maintenance costs.

1. The name of the design product: composite detector. 2. The use of the design product: the product is a composite detector installed in a battery pack or energy storage box, which is used to detect flammable gas, smoke and temperature data, and to release pressure when the battery pack or energy storage box is in thermal runaway. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

1. The name of the design product: gas detector (GTY-TA25S). 2. The use of the design product: the design product is used for detecting the concentration of flammable, toxic and harmful gases in the environment, judging the alarm state, and uploading the concentration and alarm signal to the flammable gas alarm controller to issue an alarm signal. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention discloses an LED explosion-proof projection lamp, which relates to the technical field of lamp illumination and comprises lower supports, a projection lamp shell arranged between the lower supports, a plurality of LED lamp wicks arranged on the front surface of the projection lamp shell, a plurality of bolt holes formed in the edge of the front surface of the projection lamp shell, a color-changing screen arranged on the front surface of the projection lamp shell, and a plurality of bolt holes formed in the edge of the color-changing screen. A protective shell is arranged on the outer side of the color-changing screen, a plurality of bolt holes are formed in the edge of the protective shell, the protective shell is a hollow frame, different transparent shielding materials can be selectively installed on the protective shell, a thickened sealing layer is arranged on the inner side wall of the protective shell, and the thickened sealing layer is located between the protective shell and the color-changing screen. According to the LED projection lamp, water seepage or inflammable gas is effectively prevented from entering the LED lamp wick, meanwhile, two layers of sealing protective substances of the protective shell and the color-changing screen block external gas from entering, and the overall explosion-proof performance of the LED projection lamp is higher.

The utility model relates to the technical field of combustible gas detector equipment, and discloses an anti-falling structure of a combustible gas detector, which comprises a combustible gas detector main body, a fastening bolt and a wall body, a mounting plate is fixedly mounted on the back of the combustible gas detector main body, the mounting plate is fixedly connected with the wall body through the fastening bolt, and the wall body is fixedly connected with the combustible gas detector main body. An anti-falling mechanism is arranged between the mounting plate and the wall body; the anti-falling mechanism comprises a rotating shaft and a clamping plate, a shaft hole is formed in the mounting plate, the rotating shaft movably penetrates through the shaft hole, and a torsional spring is fixedly connected between the outer wall of the rotating shaft and the inner wall of the shaft hole. The situation that the flammable gas detector falls off due to the fact that the bolts are loosened due to vibration generated by the house wall during decoration is avoided, and the stability of the flammable gas detector during installation and use is improved.

The present invention relates to the technical field of valve positioners, and in particular to a valve positioner with isolation and explosion-proof functions; the valve positioner comprises an outer shell, wherein a first chamber and a second chamber are provided inside the outer shell; a junction box is arranged inside the first chamber, and a wire pressing hole is provided at one end of the junction box away from the opening side, and an arc-shaped wiring board is provided on the wire pressing hole, and a wire inlet is opened in the first chamber, and a sealed wiring board is slidably connected to the inside of the junction box, and a plurality of guide holes corresponding to the arc-shaped wiring board are provided on the sealed wiring board; the wire pressing plate comprises an upper wire pressing plate and a lower wire pressing plate, and a semicircular wire pressing groove is provided on the side where the upper wire pressing plate and the lower wire pressing plate are close to each other; the valve positioner effectively solves the problem that during the installation process of the traditional valve positioner, the shell must be opened to expose the wiring terminal to complete the line connection, and flammable gas and dust are very likely to enter the shell and accumulate; the present invention is easy to install, effectively reduces the entry of dust or flammable and explosive gas into the interior of the device, thereby reducing the risk of explosion.

The utility model discloses a water-air intercooling fire-retardant air inlet system, which belongs to the technical field of vehicle engines, and comprises an air inlet communicating pipe, an air inlet fire-retardant gate and an intercooler which are connected in sequence, the air inlet communicating pipe is used for being connected with an air inlet main pipe, and the intercooler is used for being connected with an air inlet pipe of an air cylinder; the air inlet fire-retardant grid is arranged between the air outlet of the air inlet communicating pipe and the air inlet of the intercooler, the air inlet fire-retardant grid is in a long-strip rectangular plate shape, and the air inlet of the intercooler is a rectangular opening matched with the air inlet fire-retardant grid. The anti-explosion device has the advantages of being simple in structure, small in size and good in anti-explosion performance, flame in an air cylinder can be prevented from returning to the air inlet communicating pipe and entering the atmosphere by installing and fixing the air inlet fire-retardant grid between the air inlet communicating pipe and the intercooler, and inflammable gas in the working environment is prevented from being ignited; meanwhile, the internal space can be reasonably utilized, so that the overall structure is more compact; the air inlet temperature is reduced through the intercooler, and the performance of the engine is optimized.

The application aims to provide a kind of cyclohexanone preparation epsilon-caprolactone intrinsic safety explosion limit control method, the technical problem of chemical production intrinsic safety to be solved;Its technical scheme: one) cyclohexanone, benzaldehyde, metal porphyrin catalyst, solvent are added to high pressure reactor, at 0.5-4MPa, 50-70 DEG C reaction obtains gas-liquid mixed reaction liquid;Two) input the chemical name used before and after reaction in Aspen Plus chemical simulation software, and based on cyclohexanone, epsilon-caprolactone binary gas-liquid equilibrium selects NRTL property model, determines pure component and binary parameter, establishes cyclohexanone, epsilon-caprolactone reaction separation process, runs model and analyzes stream data;Three) according to each material in stream and its content, based on the explosion limit formula of le chatelier, the explosion limit of each stream mixed flammable gas is calculated;Through the explosion limit calculation result of each gas phase stream, the air feed amount is determined by comparison and feedback;Belongs to fine chemical technology field.