85 results about "Deflagration" patented technology

The invention discloses an explosion load simulation test device, system and method, and belongs to the technical field of explosion tests. The device comprises a driving section and a driven section, the driving section comprises a test pipeline which is used for guiding and accommodating methane-air mixed gas and deflagration products, a plurality of through holes which can be sealed by bolts are formed in the test pipeline, an obstacle partition plate and a polyethylene film are arranged in the test pipeline, and the polyethylene film is used for forming an inflation section; the driven section comprises an expansion section, a straight section and a structural section which are connected in sequence, the first end of the expansion section is connected with the test pipeline and used for diffusing shock waves generated by detonation, and the two ends of the straight section are connected with the second end of the expansion section and the structural section respectively and used for completing shaping of the blast load and improving the uniformity of blast load distribution on the structural section; and the structural section is used for bearing explosion load driven by detonation of methane and air mixed gas. According to the invention, the methane-air mixed gas is used as an explosion source, so that the test safety is improved, and the test cost is reduced.

The invention discloses a fireproof and explosion-proof safety type transformer, and relates to the technical field of transformers, one side of the top end of an embedded fixing box is connected with an outer row fixing pipe in a penetrating manner, the top end of the inner side of the outer row fixing pipe is fixedly provided with a pressing spring, and the bottom end of the pressing spring is fixedly provided with an I-shaped clamping frame; a clamping sealing ring is fixed to the position, corresponding to the I-shaped clamping frame, of the inner side of the outer exhaust fixing pipe, a plurality of exhaust fixing holes are formed in the outer side end of the outer exhaust fixing pipe at equal intervals, and isolation double-layer sleeves are symmetrically welded to the top end of the inner side of the embedded fixing box. The situation that the environment is polluted due to the fact that transformer oil overflows when hot steam is exhausted is avoided, meanwhile, resources are recycled, resource waste is reduced, the transformer oil is supplemented in real time, stability of internal protection is guaranteed, meanwhile, an internal fire extinguishing component is used for directly conducting fire extinguishing treatment on the interior, and the environment is protected. And the condition of high-pressure deflagration and explosion caused by internal fire is avoided.

The perforating bullet comprises a perforating bullet body, an energy ring is arranged at the opening end of the perforating bullet body, the energy ring can conduct secondary burning and explosion on a perforation channel after the perforating bullet body is shot into the perforation channel, the energy ring comprises a shell made of fluoropolymer materials and a thermite filling layer, the shell is arranged in an annular shape, and the thermite filling layer is arranged in the shell. The shell is filled with the thermite filling layer, and the outer wall of the opening end of the perforating bullet body is sleeved with the shell. According to the utility model, the energy ring is arranged at the opening end of the perforating bullet body, so that during normal perforation, secondary detonation and energy release are carried out on the interior of a perforation channel, and the effects of increasing the volume of the channel, increasing cracks of the perforation channel and cleaning the channel are achieved.

The invention belongs to the technical field of safety prevention and control of flammable and explosive environments, and particularly relates to an explosion suppression grading protection system and method, and the system comprises a monitoring module which monitors the environment information in a to-be-monitored area; the signal processing module is used for generating a grading early warning instruction according to the environment information; the explosion suppression execution module is used for executing an explosion suppression action according to the grading early warning instruction; and the reset module is used for generating reset information so as to reset the explosion suppression execution module. On the basis of cooperation of the monitoring module, the signal processing module and the explosion suppression execution module, corresponding explosion suppression actions can be automatically triggered, manual intervention is not needed, a complete and rapid safety protection closed loop from risk perception to active suppression is achieved, the speed and reliability from risk discovery to active intervention are remarkably improved, and the safety protection effect is improved. And the safety risk of the to-be-monitored area is greatly reduced. Based on the cooperation of the reset module, the signal processing module and the explosion suppression execution module, the standby state can be quickly recovered after explosion suppression is completed, the maintenance steps are simplified, and the use cost is reduced.

The present invention discloses a method for evaluating the installation position of an explosion suppression device using flame speed and acceleration, and relates to the field of prediction technology. The method comprises: using a volume balance calculation method to list the variation of the combustion gas volume over time; using a numerical analysis method to calculate the laminar combustion speed of gases with different concentrations, different components, and different proportions; then calculating the gas concentration in front of the flame at different times based on the relationship between the flame position and concentration, and calculating the laminar combustion speed at different times through the above steps. Obtain the flame acceleration; finally, using the relationship between the flame speed and acceleration, find the moment of maximum relative distance between the two, substitute this moment into the velocity equation, obtain the flame position information at this moment, and use this position as the optimal position for placing the explosion suppression device. The present invention can reflect the explosion mutation time and the transition position from deflagration to detonation, and provide theoretical guidance for the placement of explosion suppression sensors and explosion suppression devices in the direction of predicting flame acceleration and shock wave velocity.

The invention provides a safety early warning method and device for a deflagration event and a storage medium. The method comprises the steps of obtaining storage information and real-time detection data of a plurality of warehouses; according to the storage information and the real-time detection data, determining at least one warehouse in which a combustion explosion event does not occur, and taking the at least one warehouse as a monitored warehouse; constructing a monitoring geofence by taking the monitored warehouse as a center and a preset detonation experience distance threshold value as a radius; determining at least one monitoring unmanned aerial vehicle from a plurality of monitoring unmanned aerial vehicles for monitoring the monitoring geo-fence in real time; receiving real-time image data and real-time environment data of at least one monitoring unmanned aerial vehicle; analyzing a target fire risk of the monitored warehouse according to the real-time image data and the real-time environment data; and if the target fire risk is a medium risk or a high risk, estimating an explosion damage radiation range according to the storage information, generating an emergency evacuation event, and sending emergency evacuation prompt information to a user.

The utility model provides an ash removal device and an ash removal system of an air preheater. The ash removal device comprises a shock wave guide pipe, a pulse tank and a gas distribution ignition device, a first inlet, a second inlet and an outlet are formed in the gas distribution ignition device, the first inlet is used for receiving air, and the second inlet is used for receiving combustible gas; the outlet is connected with one end of the pulse tank; the shock wave conduit is connected with the other end of the pulse tank; and at least one nozzle is arranged on the shock wave conduit. According to the ash removal device, strong shock waves generated by deflagration reaction of air and combustible gas can be directionally sprayed out through the nozzle of the shock wave guide pipe, dust attached to the surface of an element falls off through vibration generated by the acting force of the shock waves, and therefore ash removal operation is achieved. In the whole ash removal process, operation is easy, the operation process is safe and reliable, and the ash removal effect and the ash removal efficiency are effectively improved.

A flame-proof and explosion-proof surface combustion gas includes a burner body pierced with a series of orifices, each of which is extended by a rim, wherein the orifices are arranged in several rows of aligned orifices; and a gas distributor that includes a distributor body equipped with a plurality of longitudinal gas-distribution branches, each branch being pierced with a line of orifices bordered by a rim. The distributor body is positioned inside the burner body such that each orifice of the distributor body is coaxial with an orifice of the burner body, wherein when the burner body is coupled to an air supply source and the distributor body is coupled to a gas supply source, the air and the gas mix only at the rims of the burner body.

A gas wave generating system and its use method belong to the field of aerodynamic thermal engineering technology. This gas wave generating system enables the gas mixture to quickly and short-distance transition from deflagration to detonation by setting a premixing chamber and a deflagration acceleration chamber in the gas wave generating device. The system utilizes the rapid pressurization behavior of the unsteady motion shock wave generated in the process of premixed gas deflagration to detonation to achieve a strong discontinuous and discontinuous distribution effect of the shock wave sweeping the airflow pressure field, which can be used in the fields of gas wave cleaning, fire fighting, and bird and animal repelling. The system utilizes the mixing element in the premixing chamber to achieve a full premixing process of the combustible gas and air, and through the strong turbulent disturbance of the turbulent element in the deflagration acceleration chamber, completes the rapid and short-distance transition of the combustion wave from deflagration to detonation, and achieves a spatially discontinuous distribution of the local pressure field of the strong discontinuous sweeping of the airflow. The high-intensity shock wave effect that can be generated by high-activity gases such as coal gas can be achieved in a short distance by using low-activity gases such as coal gas.

The application provides a hydrogen-doped natural gas explosion characteristic experiment device in a confined space, which comprises a pipeline system and a gas distribution system, the pipeline system comprises a driving pipe, a visible pipe and a test pipe arranged in sequence, the gas distribution system comprises a vacuum pump, an electric control valve group and a gas cylinder pipeline connected with each electric control valve in the electric control valve group, and the gas distribution system is connected with the driving pipe through a gas inlet. The hydrogen-doped natural gas explosion accident characteristic evolution and inhibition experiment of different hydrogen proportions can be carried out, and important characteristic parameters in the deflagration and detonation flame propagation process of the hydrogen-doped natural gas can be recorded.

The utility model relates to the field of flameless discharge devices, and discloses a dust flameless discharge device with high flow rate, which comprises a first fixed box and a second fixed box, an air inlet is arranged at the center of one side of the first fixed box in a penetrating manner, and a water tank is fixedly arranged at the center of the upper end face of the second fixed box. An atomizing nozzle is fixedly arranged at the center of the lower end face of the water tank, an anti-explosion plate is fixedly arranged on one side of the second fixing box, fixing plates are fixedly arranged at the positions, close to the front end and the rear end, of the outer side of the anti-explosion plate, clamping grooves are formed in the centers of the front end faces of the two fixing plates in a penetrating mode, and cleaning mechanisms are arranged in the two clamping grooves in a clamped mode. According to the anti-explosion device, residual dust in the device can be adsorbed through water mist, secondary detonation caused by the residual dust in the box is prevented, rapid cleaning of the anti-explosion plate is achieved through the cleaning mechanism, and the situation that meshes in the anti-explosion plate are blocked by the dust, and the discharging effect is affected is prevented.

A mixed detonation system for shock wave ash removal comprises a mixing device and a detonation device. The mixing equipment comprises an air flow control device, a gas flow control device, an air-gas mixer, a first gas alarm and the like, and is provided with an air inlet, a gas inlet and a mixed gas outlet; the detonation equipment comprises a mixed gas branching device, a branching ignition detonation device, a pollution discharge manual ball valve, an electronic igniter, a second gas alarm and the like, and is provided with a mixed gas inlet and a detonation branching outlet; the air inlet is connected with an air source through an air pipeline, the fuel gas inlet is connected with a fuel gas source through a fuel gas pipeline, the mixed gas outlet is connected with the mixed gas inlet through a mixed gas pipeline, and the detonation branch outlets are connected with inlets of the branch shock wave generators through detonation pipelines. According to the shock wave ash removal system, the deflagration efficiency and strength of shock wave ash removal are greatly improved, and the pipeline material cost and the pipeline installation work amount of the shock wave ash removal system are greatly reduced.

This application belongs to the field of flammable and explosive environment safety control technology, and particularly relates to a graded explosion suppression protection system and method. The system includes: a monitoring module for monitoring environmental information within the monitored area; a signal processing module for generating graded early warning commands based on the environmental information; an explosion suppression execution module for executing explosion suppression actions according to the graded early warning commands; and a reset module for generating reset information to reset the explosion suppression execution module. Based on the cooperation of the monitoring module, signal processing module, and explosion suppression execution module, corresponding explosion suppression actions can be automatically triggered without manual intervention, realizing a complete and rapid safety protection closed loop from risk perception to proactive suppression. This significantly improves the speed and reliability from risk detection to proactive intervention, greatly reducing the safety risk in the monitored area. Based on the cooperation of the reset module with the signal processing module and explosion suppression execution module, the system can quickly return to standby status after explosion suppression, simplifying maintenance steps and reducing operating costs.

The invention relates to the technical field of commercial kitchenware, and specifically discloses a gas stove head with a built-in kindling. The kindling is arranged in a side wall of the stove head, and the internal structure of the stove head is redesigned, so that the gas enters the air inlet pipe through the gas port for mixing, and the mixed gas partially enters the kindling mixed gas air inlet pipe to provide fuel for the kindling. The kindling is arranged in the middle of the side wall of the stove head. When the stove head is ignited, the gas at the bottom is also ignited by the kindling, so as to prevent the explosion inside the stove head. The invention has a compact structure and a reasonable internal structure design, and the kindling will not be affected by the high-temperature flame in the combustion chamber and the oil and water debris that fall into it, so as to avoid the phenomenon that the air pressure inside and outside the stove head is unequal and the kindling burns unstably.

The present invention discloses a test device for flame acceleration and deflagration-to-detonation conversion under column group disturbance, comprising a deflagration chamber and a column group assembly arranged in the deflagration chamber, wherein the column group assembly is detachably arranged in the deflagration chamber, the column group assembly comprises a base and a column module, a plurality of column modules are arranged on the base, the column module comprises a first mounting portion and a test portion, the base comprises a second mounting portion, and the first mounting portion is detachably connected to the second mounting portion. Thus, the present invention can realize flexible arrangement of the column modules in the longitudinal and transverse spacing of the base through a detachable combination method, which is conducive to improving the test efficiency of flame acceleration and deflagration-to-detonation tests. At the same time, when conducting flame acceleration and deflagration-to-detonation tests under conditions of different column shapes or column sizes, column modules of different cross-sectional shapes and sizes can be conveniently replaced, thereby avoiding the processing of a large number of fixed obstacles, so as to greatly reduce the test cost.

The present invention relates to the technical field of spherical oxide fillers and provides a method for simultaneously producing nano- and submicron-sized spherical oxide fillers. In this invention, an oxide raw material (raw material O) is combined with a metal or non-metal raw material (raw material M), thereby reducing the reactivity of the raw material and reducing the risk of uncontrollable dust explosions, thereby achieving safe production. At the same time, raw material O is vaporized under high-temperature conditions to form nano-sized particles, or is dispersed into nano-sized particles by the shock waves generated by deflagration. Raw material M reacts with oxygen in an oxygen-rich environment, forming submicron-sized particles through aggregation and cooling. The resulting product particles are cooled in an oxygen-rich environment and then subjected to a fine separation step, thereby simultaneously obtaining submicron-sized and nano-sized spherical oxide fillers. Furthermore, in this invention, after the temperature in the reactor stabilizes, fuel gas consumption can be minimized, thereby stabilizing the temperature in the reactor and reducing costs.

The present invention provides a flame arrester with real-time detection of detonation and deflagration resistance under hydrogen, comprising a flame arrester body, which comprises two mounting shells and a fire arrester element; the two mounting shells are fixed and connected by a plurality of screws; the fire arrester element is located between the two mounting shells, and when the two mounting shells are fixedly connected, the fire arrester element is fixed. When the flame arrester of the present invention is used, when hydrogen is transported, the first flow sensor monitors the hydrogen transport flow in real time. When the hydrogen flow monitored by the first flow sensor is less than the hydrogen transport amount, the two blocking mechanisms seal the ends of the two mounting shells, and the two detection tubes are slid to the second state in the mounting hole by two electric push rods. The fire resistance performance of the fire arrester element can be detected by the fire detection component, thereby understanding whether the fire resistance performance of the fire arrester element is normal, and ensuring that the flame arrester body can smoothly prevent fire when a fire occurs.

The utility model discloses an improved structure of fireworks. Comprising a set-off effect part (1), a deflagration part device structure (2) connected with an inner cavity in the lower portion of the set-off effect part in a sleeved mode, and an inner circle boss edge (104) located on the upper portion of the inner cavity wall of the set-off effect part and used for positioning and placing an effect body partition plate A (105). The deflagration part device structure further comprises an inner sleeve straight tube body (203) and a deflagration device threaded connection component (201) connected with the outer circle of the lower end of the inner sleeve straight tube body, the upper opening end of the inner sleeve straight tube body is connected with an ignition deflagration tube supporting plate (205), and the lower opening end of the inner sleeve straight tube body is of an open structure. The setting-off effect part and the detonation part device structure are connected into a whole through the detonation device threaded connection component, so that the detonation point of the ignition and detonation pipe (206) is located in the middle of an inner cavity of the setting-off effect part for ignition and detonation. The utility model has the advantages of reasonable structural layout, novel modeling design, good setting-off effect, safety, reliability and the like.

The utility model relates to a gas burner technical field, concretely relates to a kind of guide plate for mixing, including integrally-formed center ring part and outside ring part, the outside ring part is concentrically arranged with center ring part, center ring part forms the center through-hole matched with deflector, the edge of center through-hole is provided with several deflector mouth, when mixed gas of gas and air is transported to the below of guide plate from gas extraction pipeline, from deflector mouth place to rise to the above of guide plate.The utility model optimizes the structure of guide plate, and mixed gas of guide gas extraction pipeline is guided into the mixed cavity in the above, helps to realize the uniform stable flow of gas, has promoting effect for subsequent stable combustion, to improve the efficiency of combustion, avoid deflagration and eliminate explosion.

The application discloses a gas extraction pipe self-degreasing double-circuit deflagration flame arrestor, which comprises a double-circuit self-degreasing device and a combustion explosion flame arrestor connected to a gas pipeline, wherein the double-circuit self-degreasing device comprises two branch circuits connected in parallel, and each branch circuit is provided with a filter, a pressure detection mechanism and a circuit electromagnetic valve, which are used for controlling the closing of the branch circuit under the condition that the pressure difference of the branch circuit reaches a pressure difference critical value, and controlling the opening of the branch circuit under the condition that the pressure difference of the other branch circuit reaches the pressure difference critical value. The combustion explosion flame arrestor comprises a gas pipeline and a transverse flame arrestor and explosion relief membrane net, a temperature sensor and an electromagnetic valve device arranged in the gas pipeline, which are used for controlling the closing of the gas pipeline under the condition that the temperature of the gas in the pipeline reaches a temperature critical value. The application adopts the pressure detection mechanism and the circuit electromagnetic valve, realizes the double-circuit self-switching in the process of filtering mixed impurities, and can significantly reduce the labor cost.

An explosion-proof cyclone filter device relates to the field of waste gas treatment technology in monocrystalline silicon production. It includes: an inner cylinder; an outer cylinder fitted around the outer periphery of the inner cylinder, forming a sealed cooling chamber between them; a cooling water pipe installed within the cooling chamber and spirally coiled around the outer wall of the inner cylinder; and an air inlet pipe sealed and connected to the inner cylinder. The cooling water pipe extends from both ends of the outer cylinder, facilitating the introduction of cooling water. This rapidly reduces the temperature of the inner cylinder and red phosphorus dust to below the auto-ignition point of red phosphorus (260°C), thus eliminating the risk of spontaneous combustion of the red phosphorus dust due to high temperatures. Simultaneously, by introducing gas, the cooled red phosphorus dust in the inner cylinder undergoes an oxidation reaction with the gas, thereby achieving the harmless treatment of the red phosphorus dust. The combination of cooling and oxidation effectively prevents explosions during cleaning, thus avoiding damage to the cyclone filter and personal safety hazards to on-site personnel, and preventing fire accidents.

An energy storage system (ESS) (100) knock and heat propagation mitigation method (700) and corresponding systems (500, 600) prevent and optionally extinguish fire in an ESS container (110). The method (700) uses a gas detection system (500), a smoke and temperature detection system (600), and a fire suppression system (430). The gas detection system (500) opens the vent (126) in response to detecting a concentration of the gas that reaches or exceeds a threshold concentration. If desired, after venting the container (110), the smoke and temperature detection system (600) closes the vent (126) and activates the fire suppression system (430) in response to detecting both the presence of smoke and a temperature that reaches or exceeds a threshold temperature.

The present application relates to a kind of solid deflagration expansion fixed type ultrasonic wave drilling anchoring device and method, belong to ultrasonic wave drilling anchoring technical field.Solve the problem of insufficient anchoring force.It includes feeding device and drilling anchoring device, the feeding device is established with drilling anchoring device cooperation, feeding device is used to drive drilling anchoring device, drilling anchoring device is used to realize fixed.The present application when reaching certain drilling depth, solid fuel in the end of drill pipe cavity is ignited by electrode, ignites solid fuel nitrocellulose, occurs violent combustion and explosion, produces a large amount of energy, and the end of drill pipe is extruded and deformed;Deformed expansion cavity will extrude the inner wall of borehole, produce certain expansion force, provide larger effective anchoring force for the whole device, realize the fixation of the whole device, provide larger anchoring force for sampler under simple structure.

The utility model belongs to the technical field of fuel gas soot blowers, and discloses a branch distribution control fuel gas soot blower shaped like a Chinese character'feng '. In the branch distribution control fuel gas soot blower shaped like the Chinese character'feng', a fuel gas supply device is connected with a first inlet of a mixing tank through a fuel gas adjusting device; the air supply device is connected with a second inlet of the mixing tank through the air conditioning device, the ignition device is connected with an outlet of the mixing tank, the branch control devices are connected with the ignition device, and the branch control devices are connected with the pulse air storage tanks in a one-to-one correspondence mode. One branch control device corresponds to one pulse gas storage tank and can control gas inflow and ignition of mixed gas in each pulse gas storage tank, smoke can be prevented from reversely flowing into the pulse gas storage tanks and pipelines, it can be guaranteed that the mixed gas is evenly injected into the pulse gas storage tanks, and the detonation effect of the mixed gas is improved.

The invention discloses an experimental device for deflagration of oil gas in a semi-closed space under obstacle disturbance, which comprises a deflagration pipeline and an inflation system for injecting the oil gas into the deflagration pipeline, the pressure data acquisition system is used for measuring overpressure data in the oil gas deflagration process, the image data acquisition system is used for recording a flame propagation structure in the oil gas deflagration process, and the pressure data acquisition system and the image data acquisition system are connected with the computer. The technical scheme is carried out in a controlled laboratory environment, obstacles with different blocking rates, shapes, positions, numbers and arrangement modes can be replaced for the independently designed detonation pipeline, and the concentration of combustible gas in the pipeline can be changed for an experiment; meanwhile, high-precision measuring equipment can be conveniently installed to collect detailed experimental data, and the oil gas explosion phenomenon and the influence of the oil gas explosion phenomenon on the structure can be safely studied.

A method (700) for mitigating deflagration and thermal spread in an energy storage system (ESS) (100) and corresponding systems (500, 600) prevent and, if necessary, suppress fires in ESS containers (110). The method (700) utilizes a gas detection system (500), a smoke and temperature detection system (600), and a fire suppression system (430). The gas detection system (500) opens a vent (126) when it detects that a gas concentration reaches or exceeds the threshold concentration. If required after the container (110) has been vented, the smoke and temperature detection system (600) can close the vent (126) and activate the fire suppression system (430) when both the presence of smoke and a temperature reaching or exceeding a threshold temperature are detected.

The utility model discloses a dew point corrosion prevention modular fuel gas shock wave soot blower which comprises a gas source measurement and control module, N mixed ignition modules, a plurality of shock wave generator modules, 2N reverse blowing monitoring modules and an electric control cabinet. An air inlet interface, an air outlet interface, a fuel gas inlet interface and a fuel gas outlet interface are arranged on a shell of the gas source measurement and control module; a shell of each mixed ignition module is provided with an air inlet connector, a fuel gas inlet connector and a deflagration mixed gas outlet connector; and each shock wave generator module comprises a shock wave generator body, and a mixed gas inlet interface, a shock wave nozzle, a reverse blowing interface and a furnace wall sealing fixing piece which are arranged on the shock wave generator body. The dew point corrosion prevention modular fuel gas shock wave soot blower adopts modular design, is directly installed and used on site, has the advantages of being safe and reliable in performance, convenient to install and overhaul and easy to maintain and operate, and can meet the requirement for long-period operation of a boiler.

The utility model relates to a gas burner technical field, concretely relates to a kind of gas jet device, including support main body, support main body is connected with several gas supply components and several gas supply channels, at least one gas supply channel is connected with at least two gas supply components to provide gas.The utility model improves the setting mode of gas supply channel, supplies gas simultaneously by multiple gas supply components, improves the directionality of gas supply, is convenient to form uniform stable airflow, improves the stability and reliability of combustion, avoids the occurrence of deflagration and explosion during combustion.

The invention belongs to the technical field of test equipment, and particularly relates to an explosion-proof test box and an explosion-proof method, through the arrangement of a swivel mechanism and two test cavities with different temperature test environments in the box body, the requirements of different element test environments can be met more conveniently, quickly and safely, and the test efficiency is improved. Environment switching can be directly carried out during high and low temperature impact tests, and possible explosion or deflagration risks due to the fact that test elements are additionally taken out are not needed; the arrangement of the protection assembly can provide certain protection in the element testing process on the premise of not influencing element placement and automatically changing the testing environment; and the over-temperature mechanism is arranged, so that the change influence of the test environment can be further reduced, the test accuracy is improved, and certain protection can be provided and the impact caused by detonation or explosion can be reduced in the element transfer process.

The invention relates to an anti-deflagration method for a circulating aluminum scrap smelting furnace. Safe operation is guaranteed through multiple interlocking and purging mechanisms. Comprising the steps that layered feeding management is conducted, the distance between a material pile and a burner opening is required to be larger than or equal to 1.5 m, and enough combustion space is guaranteed; step-by-step purging triggering is conducted, and forced purging is automatically started for 180-240 seconds according to the furnace temperature and the flameout frequency; valve control safety interlocking adopts a signal feedback electromagnetic valve, and strictly follows the start-stop sequence of'air before air '; leakage detection monitoring is carried out in the whole process, gas pipelines are automatically detected every day, and a combustion system is regularly maintained. According to the method, systematic prevention and control are achieved from the three aspects of process operation, combustion control and equipment maintenance, and the detonation risk is effectively eradicated.