231 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 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.

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.

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.

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 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 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.

The invention discloses an industrial and commercial energy storage battery system thermal runaway monitoring processing method and device, and belongs to the technical field of energy storage batteries. The method comprises the following steps: acquiring thermal runaway monitoring parameters of the energy storage battery system in real time, wherein the thermal runaway monitoring parameters comprise the temperature, the temperature rise rate, the voltage drop rate, the internal resistance rise rate, the combustible gas concentration, the combustible gas concentration rise rate and the air pressure rise rate; when the thermal runaway monitoring parameter meets a first-level judgment threshold value requirement, triggering a first-level early warning measure; and within a set time after the first-stage early warning measure is triggered, if the thermal runaway monitoring parameter meets a second-stage judgment threshold value requirement, triggering a second-stage early warning measure, otherwise, releasing the first-stage early warning measure. According to the method, the thermal runaway risk of the energy storage battery can be moderately responded in time.

The utility model provides an anti-leakage large-capacity storage tank for safe production of toluene, which comprises a bottom frame, side frames and storage tanks, the storage tanks are fixedly connected above a plurality of fulcrums of the bottom frame, the side frames are fixedly connected above the other fulcrums of the bottom frame, the storage tanks are fixedly connected on the side surfaces of the side frames, an inner shell is fixedly connected inside the storage tanks, and the inner shell is fixedly connected with the side surfaces of the side frames. The front face of the storage tank is fixedly connected with an output connector, and the front face of the storage tank is fixedly connected with an input connector. The utility model has the advantages that the floating roof part is always in close contact with the liquid level, so that toluene liquid is effectively isolated from air in the tank, the possibility of toluene vapor volatilization is reduced, and the contact area of toluene and air is reduced to a great extent. The evaporation loss is reduced, and the storage efficiency of methylbenzene can also be improved. And the formation of combustible gas can be reduced by reducing the volatilization amount of methylbenzene steam, so that the risks of explosion and fire are reduced. Therefore, safe storage is realized.

To provide a use device of a liquefied combustible gas capable of easily and inexpensively gasifying a liquefied combustible gas especially in a cement production facility.SOLUTION: There is provided, a use device of a liquefied combustible gas, the use device can be attached to a cement production facility comprising: a calcination furnace; a cement kiln; and a clinker cooler which is coupled to a part in front of a furnace of the cement kiln. The use device comprises: a tank storing the liquefied combustible gas in a liquid state; and a combustible gas pipeline which communicates the clinker cooler with a blowing part which is provided on at least one part belonging to a group formed of a calcination furnace extraction pipeline through which an extraction gas extracted from the clinker cooler is distributed to the calcination furnace. The combustible gas pipeline supplies the liquefied combustible gas or, the combustible gas obtained by being gasified during circulation of the liquefied combustible gas to the blowing part.SELECTED DRAWING: Figure 3

The intelligent control system comprises an ethylene tank car, an unloading pipeline and a master controller, the ethylene tank car is connected with the master controller through a car electrostatic clamp, the unloading pipeline comprises a main pipe pass, one end of the main pipe pass is connected with the ethylene tank car through a gas phase pipe orifice flange, and the other end of the main pipe pass is connected with a gas phase pipe orifice flange. An ethylene pipeline, a nitrogen pipeline and a release flare pipeline are separated from the other end of the main tube pass, and an operation display interface, a key bin, a human body electrostatic ball, a function button group and a voice prompter are arranged on the main controller. According to the technical scheme, all ethylene devices are intelligently managed through the intelligent system, automatic control over the whole ethylene unloading process and real-time monitoring and danger early warning over the whole ethylene unloading process are achieved, and safety accidents caused by static electricity, combustible gas leakage, replacement purging process errors and the like can be effectively prevented; and the workload of operators is reduced while safe operation of ethylene unloading is guaranteed.

The application discloses a kind of throttling-based auxiliary ignition device, including circular cross-section combustion chamber, kerosene injection support plate and injection hole installation point, combustion chamber includes isolation section, groove section and expansion section, kerosene injection support plate is installed in isolation section export, injection hole installation point and the installation position of kerosene injection support plate are in the same section, injection hole installation point is spaced distribution with kerosene injection support plate, and a group of air injection holes are installed in injection hole installation point.The application can promote kerosene reliable ignition to start stable combustion under the condition of not using flammable gas, high-frequency spark plug and igniter, and can be reused, simplify auxiliary ignition device, reduce system complexity, improve reliability.

The invention discloses a gas steel cylinder storage cabinet with a safety protection function, and relates to the technical field of gas steel cylinder storage equipment. The gas steel cylinder storage cabinet with the safety protection function comprises a cabinet body and the like, the cabinet body is rotationally connected with an opening and closing door, the cabinet body is fixedly connected with paired pressure valves, the cabinet body is fixedly connected with a mounting plate frame, the mounting plate frame is fixedly connected with paired gas storage tanks, the mounting plate frame is fixedly connected with paired gas pressure sensors, and the mounting plate frame is fixedly connected with a nozzle. And the nozzles are fixedly connected with the paired gas storage tanks and are communicated with the gas storage tanks through pipelines. By means of the pressure valve, the gas storage tank and other components, nitrogen can be injected into the cabinet body firstly when leakage of harmful or inflammable gas is detected, the harmful or inflammable gas is diluted through the nitrogen, and then the mixed gas is discharged outwards; therefore, the situation that high-concentration harmful or inflammable gas is directly discharged outwards and serious environmental pollution and potential safety hazards are caused is avoided, and the safety of the gas steel cylinder storage cabinet is improved.

The utility model discloses a combustible gas detector gas-collecting hood, which particularly relates to the technical field of detector gas-collecting hoods, and comprises a combustible gas detector, a detection tube is fixedly connected to the bottom of the combustible gas detector, a limiting ring and a protective tube are sleeved in the middle of the detection tube, and a gas-collecting hood is arranged at the bottom of the combustible gas detector. An exhaust hole and a mounting hole are formed in the top of the gas-collecting hood, and a plurality of reinforcing rods are fixedly connected to the middle of the gas-collecting hood. According to the utility model, the gas-collecting hood is firstly mounted in the middle of the detection tube, and is clamped and fixed through the matching of the protective tube and the limiting ring, so that the gas-collecting hood can be conveniently mounted and fixed, the gas-collecting area is increased through the gas-collecting hood, sufficient gas collection can be ensured, and a better dustproof and rainproof effect can be achieved during use; and meanwhile, the dustproof net plate can be used for carrying out dustproof protection on entering gas, so that impurities are prevented from entering the detection channel and blocking gas flow, and the protection effect is improved.