463 results about "Flammable gas" patented technology

An energy storage system includes an enclosure having a vent forming a flow path between an interior volume of the enclosure and an environment exterior to the enclosure. A vent covering is mounted proximate the vent and is selectively disposable over the vent such that the flow path is open when the vent covering is in an open position and closed when the vent covering is in a closed position. The vent covering can be biased to the open position and / or made of a thermally decomposable material. An actuator is coupled to the vent covering such that supply of power to the actuator causes the vent covering to assume the closed position and loss of power to the actuator causes the vent covering to assume the open position. A method comprises detecting a flammable gas and opening a first flow path by a first vent of the enclosure.

The invention discloses a container type energy storage cabin fire control system and method in the technical field of energy storage. The method comprises the steps that an external input signal is received; when responding to the received alarm signal in the battery compartment, controlling an audible and visual alarm outside the battery compartment to give an alarm, and outputting an early warning dry contact signal to the BMS system; starting a ventilation system in the battery compartment in response to the received low alarm signal of the combustible gas in the battery compartment; and in response to the received fire extinguishing signal, closing a ventilation system in the battery compartment, opening an electromagnetic valve of a fire extinguishing device to spray perfluorohexanone in the space in the battery compartment, and outputting a spray dry contact signal to the BMS system at the same time. The controller is used for receiving various alarm signals in the energy storage cabin and controlling the sound-light alarm, the ventilation system and the fire extinguishing device to carry out fire prevention and emergency treatment, so that the operation safety of the energy storage cabin is improved, the hidden danger of fire disasters when no personnel management exists is effectively avoided, and the personal safety and property safety of managers are protected.

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 invention discloses a lithium battery safety energy storage electric cabinet and an operation management method thereof. The lithium battery safety energy storage electric cabinet comprises a cabinet body, an energy storage system, a heat dissipation fire extinguishing system and a control system, the cabinet body is fixed on the base, and the energy storage management system, the heat dissipation fire extinguishing system and the control system are all arranged in the cabinet body; the energy storage management system comprises a battery module, a battery management system and an energy storage system operation management device; each battery unit is managed and maintained through the battery management system, and the state of the battery is monitored; energy conversion, bidirectional flow and voltage level conversion between an energy storage battery and a power grid are realized through operation management of the energy storage system, and grid connection and disconnection of an electric cabinet are controlled; the environment state in the cabinet body is monitored through the control system, network disconnection is carried out through the battery management system and the energy storage system when abnormal temperature, fire, smoke or combustible gas in the cabinet body are monitored, and cooling and fire extinguishing are carried out through the heat dissipation fire extinguishing system.

Disclosed are a build-up adhesive film for a flame-retardant FC-BGA packaging substrate, a preparation method therefor, and a use thereof, said film comprising, in parts by weight: 30-40 parts of an epoxy resin; 20-25 parts of a curing agent; 1-3 parts of a phenoxy resin; 0.05-0.1 parts of a curing accelerator; 80-100 parts of an inorganic filler, the inorganic filler being selected from one or two of modified boron nitride nanotubes and modified silica; the curing agent comprises a phosphorus-containing cyanate. The present invention uses the curing agent and the inorganic filler to form a composite flame retardant system on the basis of the epoxy resin, the phenoxy resin, the curing accelerator and other components to ensure the application of the build-up adhesive film in FC-BGA packaging substrates; the curing agent uses a phosphorus-containing cyanate, and when it burns, the phosphorus-containing group generates a phosphaphenanthrene group in the gas phase, which can form a stable structure and provide a free radical quenching function; in addition, the nitrogen-containing structure can also obtain a hindered amine structure having a quenching effect, forming a non-flammable gas, providing a gas phase dilution function, and effectively improving the flame retardant effectiveness of the build-up adhesive film.

To provide a stationary type mixer for a fluid, that more efficiently mixes and activates a fluid, such as flammable gas and air, used in a pressure-welding torch or the like.SOLUTION: A stationary type mixer A3 for a fluid comprises: a pipe body 1 provided with a straight internal space 4 having a supply pipe 90a and a discharge pipe 90b of a fluid at both ends in a length direction; and a guide body 3 which is accommodated in the internal space 4 of the pipe body 1b, is provided with spiral blades 30a, 30b from the supply pipe 90a toward the discharge pipe 90b on an outer peripheral surface 39, and further, which is provided with clearances 400 of a predetermined size in between a tip of the spiral blades 30a, 30b and an internal peripheral surface 19 forming the internal space 4 of the pipe body 1b.SELECTED DRAWING: Figure 5

Various embodiments described herein are directed to luminaire components that prevent flame transmission from the inside of a luminaire to the outside of a luminaire. In certain aspects, the luminaire can be used in an environment containing flammable gas, for example, in specialized lab work or testing applications. This application discusses components that can be used to prevent flame transmission from the inside of a luminaire to the outside of a luminaire, thereby yielding a flame encapsulating luminaire. Accordingly, the components and assemblies described herein can be safely integrated with systems that operate in the presence of flammable gas.

The invention relates to the technical field of coal mine fire prevention, and particularly discloses a grouting device for preventing and controlling spontaneous combustion of residual coal in a coal mine goaf. The material tank is arranged on the movable frame; the middle bin is communicated with an outlet in the bottom of the material tank; the composite pipe comprises a slurry conveying pipe and an exhaust pipe; and the end comprises an exhaust hood and a grouting head which are coaxially distributed. In the grouting fire prevention process, gas in the goaf is exhausted into the middle bin through the exhaust pipe, negative pressure in the middle bin can be prevented, pressure fluctuation in the slurry pumping process can be reduced through the stability of air pressure, slurry pumping is smoother, and it is ensured that slurry can be continuously and smoothly pumped out; meanwhile, flammable gas containing methane and the like or other poisonous gas exhausted from the goaf is stored through the middle bin and prevented from being directly exhausted into the atmosphere, environmental pollution and safety risks are reduced, and follow-up collection of the gas in the goaf is facilitated.

An anti-theft system for deterring and preventing theft from automated teller machines includes an automated teller assembly that stores monetary bills, a tampering detection unit, and a dye delivery system. The automated teller assembly includes a computer. The tampering detection unit is mounted on the automated teller assembly and electrically coupled to the computer. The tampering detection unit can detect unauthorized access to the automated teller assembly, including seismic vibrations or tilting of the machine, temperature changes associated with torches or drills used to breach the machine, and flammable gasses. The dye delivery system is electrically coupled to the computer and can dispense dye on the monetary bills within seconds after tampering is detected.

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 utility model relates to an electrochemical energy storage fire alarm device and a battery box, and relates to the technical field of fire alarm. The device comprises a new energy storage control chamber, No. 1-No. 5 battery boxes and an energy storage electric control box, the new energy storage control room is provided with a combustible gas host A; comprising a new energy storage control chamber, No. 1-No. 5 battery boxes and an energy storage electric control box, the new energy storage control room is provided with a combustible gas host A; two hydrogen alarms, two methane alarms, a local alarm, a battery pack, a BMS (Battery Management System) and an XBUS controller are arranged in each battery box; and a combustible gas host B and a fire alarm host measurement and control cabinet are arranged in the energy storage electric control box, and through a hydrogen alarm, a methane alarm, a combustible gas host A and a combustible gas host B, all operation and monitoring functions and timely alarm can be realized, so that the monitoring is more comprehensive, and the monitoring and processing effects are better.

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 shock wave soot blower adopting the flammable gas comprises a base and a soot blowing assembly, the soot blowing assembly is connected with the base and can move in the length direction of the base, the soot blowing assembly comprises an air section, a fuel section, a combustion section and a soot blowing section, the air section is used for introducing air and is connected with the fuel section, and the combustion section is connected with the soot blowing section. The fuel section is used for introducing acetylene and air, the combustion section is connected with the fuel section so as to be used for receiving mixed gas in the fuel section, the combustion section is provided with an ignition part, the ignition part is used for igniting the mixed gas in the combustion section, the soot blowing section is connected with the combustion section, at least part of the soot blowing section is arranged in the air pre-heater, and the soot blowing section is provided with a plurality of nozzles. Therefore, the combusted mixed gas is sprayed into the air pre-heater through the soot blowing section. The shock wave soot blower adopting the combustible gas has the advantages of being good in cleaning effect and high in safety.

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.

To provide a novel method of mixing fuel and an oxidant, and a novel method of decomposing a feedstock using a feedstock reactor.SOLUTION: Fuel is mixed with an oxidant to form a first combustible gas mixture mainly comprising non-plug flows. The first combustible gas mixture transitions to a second combustible gas mixture mainly comprising plug lows. The second combustible gas mixture is combusted to form one or more combustion products. One or more combustion products are mixed with the feedstock to decompose the feedstock.SELECTED DRAWING: Figure 2

The invention discloses a coal pile stacking data management method and system for preventing spontaneous combustion, and relates to the technical field of coal supervision. The method comprises the following steps: monitoring the internal temperature, the surface temperature and the environment temperature of a coal pile in real time through a temperature measuring cable, a temperature sensor and an infrared thermal imager; data are transmitted in a centralized mode through an Internet of Things platform, a Prophet model is used for predicting the temperature change trend, and abnormal temperature is detected; performing real-time early warning and calculating a temperature difference value, a change rate and a comprehensive evaluation value; automatic control over spraying, mist spraying and ventilation systems is achieved through linkage control, and appropriate countermeasures such as spraying cooling, mist spraying oxidation reaction inhibition and ventilation temperature and inflammable gas concentration reduction are selected according to the temperature condition. Multiple systems can work cooperatively, the running state is monitored in real time and dynamically adjusted, and meanwhile manual intervention is supported. The method can improve the accuracy and reliability of coal pile temperature supervision, and effectively prevents safety problems caused by temperature abnormity.

The invention discloses an anti-explosion scroll compressor, and relates to the technical field of scroll compressors, in particular to a scroll compressor with an anti-explosion function. An explosion-proof junction box assembly is arranged on a compressor body; a junction box of the explosion-proof junction box assembly is in circular projection welding connection with the compressor body; the left side and the lower side of the junction box are provided with cable gland mounting holes, and a cable gland A used for connecting a power cable and a cable gland B used for connecting a protector cable are assembled in the cable gland mounting holes respectively. The wiring T-shaped seat is arranged on the wiring post; a power supply cable penetrates through the cable gland A and then is connected to the wiring T-shaped seat through a bolt; the temperature protector penetrates through the cable gland B and then is placed in the junction box; and an isolation gasket is arranged on the junction box cover and is assembled and tightened with the junction box through an M5 bolt. According to the technical scheme, the problems that a conventional compressor junction box in the prior art is relatively simple in protection, poor in sealing performance, prone to sparking when making contact with metal impurities or liquid, flammable and explosive in a flammable gas environment and the like are solved.

The invention discloses a combustible gas torch burner, and belongs to the technical field of burners. A combustible gas torch burner comprises a burner body, a mixing chamber is fixedly connected to the interior of the burner body, and an air inlet pipe is fixedly connected to the bottom face of the mixing chamber. According to the combustible gas torch burner, a motor rotates forwards and backwards to drive a rotating shaft to rotate, so that a movable arc disc rotates forwards and backwards to drive a slope-shaped sliding rail to move, dynamic movement of a first sliding column and a second sliding column is adjusted, and the overturning amount of a first conical plug and a second conical plug can be adjusted; the gas output of the combustible gas inlet pipe and the combustible gas outlet pipe can be dynamically adjusted in time, sufficient mixing of air and combustible gas is controlled, the adaptive mixing ratio of the air and the combustible gas is guaranteed, sufficient combustion of mixed gas is guaranteed, generation of harmful floating pollutants is reduced, the atmospheric environment is protected, and waste of combustible gas resources is reduced.

The embodiment of the invention discloses a digital coal yard intelligent control system and method, and the method comprises the steps: collecting the environment data (temperature value, humidity value and inflammable gas concentration value) of each key position through distributed sensors disposed at a plurality of key positions of a coal yard; carrying out data preprocessing and time sequence implicit association on the environment data of each key position by adopting a data processing technology based on artificial intelligence, and then carrying out generality-guided combustion-supporting factor time sequence collaboration on a key position temperature time sequence implicit association feature and a key position inflammable gas concentration time sequence implicit association feature; therefore, according to the combustion-supporting-combustion suppression confrontation representation between the key position combustion-supporting factor time sequence representation and the key position humidity time sequence implicit association, the explosion risk of the key position is intelligently judged, and a corresponding early warning prompt is generated. In this way, efficient and intelligent management of the coal yard environment is achieved.

The present invention discloses a method and system for safety risk assessment of multi-factor coupling reaction of fine chemical industry, which relates to the field of chemical risk assessment and production safety, including: according to the reaction system type of chemical process, calculating the maximum pressure that can be reached after the reaction system loses control or the impact range of released flammable gas, and then determining the severity of reaction pressure loss control of the reaction system according to the first rating rule and the second rating rule; calculating the total flow rate of out-of-control reaction gas release, and determining the possibility of reaction pressure loss control according to the total release flow rate and the third rating rule; determining the acceptability of multi-factor coupling loss control according to the severity of reaction pressure loss control, the possibility of reaction pressure loss control and the multi-factor coupling matrix. The present invention can conduct safety risk assessment on fine continuous chemical production process, thereby controlling and reducing the risk factor and ensuring safe production.

The utility model relates to the technical field of pipe joints, in particular to an anti-explosion protection pipe joint for an inflammable gas pipeline, which comprises a connecting pipe, two ends of the connecting pipe are connected with flange plates, an adjustable pressure balance structure is arranged on the side wall of the connecting pipe, and the adjustable pressure balance structure comprises a pressure relief connecting pipe. The pressure relief connecting pipe is connected to the side wall of the connecting pipe, and a fixed connecting pipe is connected to the side wall of the pressure relief connecting pipe. By means of a pressure relief connecting pipe, a fixed connecting pipe, a conical piston, a reset spring, a movable piston and an adjusting bolt in the adjustable pressure balance structure and interaction of all the components, the device can balance air pressure, then the pipe wall is protected against bursting, a pipeline is safer during use, and the service life of the pipeline is prolonged. Therefore, the problem that the pipe wall can burst is solved.

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.

Device (1) for venting a gas flow for a unit for the production and / or transfer of a flammable gas such as hydrogen, the device (1) comprising: - a vertical main conduit (2) in the operating position and having a lower end (21) intended to be fluidly connected to said unit, and - a U-shaped secondary conduit (4) connected to an upper end (22) of the main conduit (2), the secondary conduit (4) comprising a first straight portion (41) connected to the upper end (22) of the main conduit (2) so as to form a first downward-facing bend (6), and a second straight portion (42) connected to the first straight portion (41) by means of a second upward-facing bend (43), the second straight portion (42) having a vent opening (44) located above the second bend (43),characterized in that the first bend (6) and the second bend (43) respectively define a high point (PH) and a low point (PB) which are at least 50 cm apart, and in that the first straight portion (41) of the secondary conduit (4) has a height and a diameter defined according to a height / diameter ratio of at least 5, preferably at least 10. Figure of the abstract: Figure 1,

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.

1. The name of this design product: Household gas detector (JT‑Q10G series). 2. Purpose of this design product: used to detect combustible gas and alarm. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

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.