432 results about "Flame arrester" patented technology

The invention provides a refueling station filling function detection device and method. The device comprises an operation control module, a vehicle-mounted hydrogen storage simulation module, a hydrogen diffusion module, a hydrogen supply module, a nitrogen purging module, a hydrogen replacement module, a weighing metering module and a skid-mounted carrying module. The operation control module comprises a control unit and an operation panel, different control signals are generated according to the requirements of workers, and the vehicle-mounted hydrogen storage simulation module is used for simulating vehicle-mounted hydrogen storage systems of different vehicle types and is connected with a hydrogen filling port of the hydrogen supply module through a main filling pipeline; the nitrogen purging module and the hydrogen replacement module are connected with the main pipeline through a pressure regulating valve and a one-way valve; the hydrogen diffusing module is connected with the main pipeline through a stop valve, and hydrogen in the pipeline of the device is vented through a flame arrester. By adopting the device, the problems of complicated operation and easy damage to equipment in a station in the existing detection technology are solved, the pressure and temperature of related media are detected in real time by adopting an automatic detection technology, and the filling function and metering of the hydrogen filling machine are monitored.

The utility model discloses a jacket heat preservation flame arrester for high-oxygen VOCs (volatile organic compounds) to enter dry quenching, which belongs to the technical field of flame arresters and comprises two valve bodies respectively communicated with a gas pipeline for the VOCs to enter the dry quenching and a flame arresting screen arranged between the two valve bodies, a jacket capable of introducing steam to preserve heat is arranged between the two valve bodies, and the two valve bodies are communicated with a gas pipeline for the VOCs to enter the dry quenching. The jacket is arranged on the outer side of the fire-retardant screen; a jacket inlet communicated with a steam pipeline is formed in one side of the jacket, and a jacket outlet communicated with a drain pipeline is formed in the other side of the jacket. According to the utility model, the temperature around the fire-retardant screen can be ensured not to be lower than the crystallization temperature of naphthalene gas, so that the naphthalene gas in VOCs gas can smoothly pass through the fire arrester and then enters dry quenching for incineration, and the VOCs are really discharged without external emission.

The invention discloses a lithium battery thermal runaway heat insulation buffer fire extinguishing protection device which comprises a box body and a box cover capable of being turned over to cover the box body in a sealing mode, a pressure relief opening is formed in the box cover or / and the box body, and a quenching flame arrester is installed in the pressure relief opening in a matched mode; wave energy absorption pieces are installed on the inner wall of the box body and are combined energy absorption pieces in a wave continuous shape or protruding single energy absorption pieces. According to the quenching flame arrester, nearby flames can be timely and effectively quenched, the flames are prevented from disordering and spreading, the fire extinguishing efficiency and the fire extinguishing strength are enhanced, and the quenching flame arrester located at the pressure relief opening or the exhaust opening not only has the flame quenching effect, but also has the pressure dredging or pressure relief effect; the explosion resistance is improved through the double-layer box plate, flame diffusion and explosion pressure dredging are jointly inhibited through the quenching flame arrester and the wave energy absorption piece, explosion impact and high-temperature conduction are resisted through the composite heat insulation buffer layer, the safety of a passenger cabin is guaranteed, and the device is suitable for aviation lithium battery emergency disposal scenes.

The invention relates to a low-concentration combustible gas concentration system and an operation method thereof, and the low-concentration combustible gas concentration system comprises a flame arrester, a mixing cavity, a non-combustible gas supplementing tank, a gas compressor, a primary separator, a light component secondary separator, a heavy component secondary separator and a concentration regulating valve, the premixed gas sequentially passes through a primary separator, a light component secondary separator and a heavy component secondary separator under the action of a gas compressor to carry out concentration operation on light component combustible gas, non-combustible gas is returned to a mixing cavity, and heavy component gas is discharged into the atmosphere; the invention aims to solve the technical problems of large occupied area and volume, low operation efficiency and poor separation effect of the existing combustible gas separation equipment.

The invention relates to a flame arrester for a gas fuel injector and the gas fuel injector. The flame arrester for the gas fuel injector comprises an outer cylinder wall, an inner cylinder wall and a sealing element, wherein the outer cylinder wall is provided with a gas inlet end and a gas outlet end; the at least two ferromagnets are fixed in the outer cylinder wall, the axial directions of the at least two ferromagnets are parallel to the axial direction of the outer cylinder wall and / or are arranged at an angle relative to the axial direction of the outer cylinder wall, two adjacent ferromagnets in the at least two ferromagnets are mutually spaced through a gap, and magnetic poles of the two adjacent ferromagnets are opposite so that a magnetic field can be formed between the two adjacent ferromagnets; when flame enters the gap between the at least two ferromagnets from the gas outlet end of the outer cylinder wall, plasma in the flame can deflect under the action of a magnetic field so as to be annihilated when touching the inner surface of the outer cylinder wall. According to the flame arrester, damage of tempering to the gas fuel injector or a connecting pipeline of the gas fuel injector can be prevented.

The invention provides an explosion-proof reactor and application, and belongs to the field of chemical equipment. The explosion-proof reactor comprises a shell with openings in the upper end and the lower end, and an upper sealing head and a lower sealing head which are respectively arranged at the upper end and the lower end of the shell; a plurality of reaction tubes are arranged in the inner cavity of the shell; a feeding sleeve is arranged on the upper sealing head, and a first feeding hole and a second feeding hole are formed in the feeding sleeve; a discharge hole is formed in the lower sealing head; and explosion-proof grids are respectively arranged in the inner cavities of the upper sealing head and the lower sealing head. The tail end spray pipe of the feeding distributor penetrates through the anti-explosion grid to directly introduce a combustible raw material medium into the reaction pipe, so that an explosion atmosphere is prevented from being formed in the space of the upper sealing head. According to the explosion-proof reaction tube, the explosion atmosphere is limited in the reaction tube, possible fire explosion in the reaction tube is controlled within the range of the reaction tube through the explosion-proof grids at the two ends of the reaction tube, the explosion-proof grids serve as a detonation-resistant or detonation-resistant flame arrester of the reaction tube, and then the explosion-proof effect is achieved.

The invention relates to the field of flame arresters, and discloses a long-time flame arresting structure with an intra-cavity flow guide function, which comprises a shell provided with a pressure relief air inlet end, a pressure relief air outlet end and a cavity; the burning-resistant structure is arranged at the pressure relief exhaust end; and the cavity flow guide structure is arranged in the cavity and is used for dividing pressure relief airflow flowing into the cavity from the pressure relief air inlet end into a plurality of regional airflow flowing towards different regions of the burning-resistant structure. Thus, the cavity flow guide structure can actively divide pressure relief air flow flowing into the cavity from the pressure relief air inlet end, the divided multi-strand regional air flow can flow through different regions of the burning-resistant structure, heat in the burning-resistant structure is dispersed, the risks of tempering and burnthrough phenomena are effectively reduced, the fire retardance duration is effectively prolonged, and the service life of the fire retardant is prolonged. Therefore, the long-time fire-retardant structure can provide long-time burning-resistant protection when accidents such as fire break out at the pressure relief position of the storage tank of the petrochemical device occur, further expansion of the accidents is prevented, and more preparation time is reserved for emergency rescue.

The invention relates to the field of flame arresters, and discloses a long-time flame arresting structure with a convex design, which comprises a shell provided with a pressure relief air inlet end, a pressure relief air outlet end and a cavity; the burning-resistant structure is arranged at the pressure relief exhaust end and comprises a plurality of burning-resistant layers which are sequentially arranged at intervals in the axial direction of the pressure relief exhaust end, the burning-resistant layer located at the most downstream forms a burning side burning-resistant layer, and the burning-resistant layer located at the upstream of the burning side burning-resistant layer forms a protection side burning-resistant layer; at least partial area of the downstream side surface of the combustion-side burning-resistant layer protrudes towards the downstream; and the flow guide structure is arranged in the shell, is positioned on the upstream of the burning-resistant structure and is used for dividing the pressure relief airflow in the shell into a plurality of regional airflow flowing towards different regions of the burning-resistant structure. Thus, the burning-resistant layer on the burning side has a large heat dissipation area during burning, and the flow guide structure is beneficial to heat dispersion, so that the risks of tempering and burnthrough phenomena can be effectively reduced, and the fire retardance duration is prolonged.

The invention relates to the technical field of waste gas treatment, and provides an oil tank waste gas adsorption treatment system and a control method. The anti-explosion variable-frequency induced draft fan is arranged on the main oil and gas pipeline; the flame arrester is arranged on the main oil and gas pipeline and located on the upstream of the air inlet direction of the anti-explosion variable-frequency induced draft fan; a gas inlet of the first activated carbon adsorption box is communicated with the main oil-gas pipeline, and a gas outlet of the first activated carbon adsorption box is communicated with a gas inlet of the second activated carbon adsorption box in series; the inlet pressure sensor is arranged at the air inlet end of the first activated carbon adsorption box; the outlet pressure sensor is arranged at the air outlet end of the second activated carbon adsorption box; the inlet valve is arranged at the air inlet end of the first activated carbon adsorption box, and the outlet valve is arranged at the air outlet end of the second activated carbon adsorption box. Through cooperation of series adsorption, active air induction and intelligent monitoring, multiple functions of efficient purification, safe operation and state early warning of the oil tank waste gas adsorption treatment system are achieved.

The utility model discloses a low-temperature rectification process system for preparing ultralow-concentration deuterium-depleted water, and relates to the technical field of preparation of deuterium-depleted water. The system comprises a low-temperature rectification system, wherein the low-temperature rectification system is provided with a feeding pipeline, a low-deuterium-hydrogen isotope gas pipeline and a high-deuterium-hydrogen isotope gas pipeline; the feeding pipeline is provided with a feeding mass flow controller; the low-deuterium hydrogen isotope gas pipeline is provided with a first discharge mass flow controller and is connected with a gas conversion system; the deuterium-rich hydrogen isotope gas pipeline is provided with a second discharge mass flow controller and is connected with an exhaust pipeline through a flame arrester; the inlet side of the flame arrester is further connected with a vacuum pump, the inlet side of the vacuum pump is connected with a third pneumatic valve, and the third pneumatic valve is connected with a low-deuterium-hydrogen isotope gas pipeline and connected with the inlet side of the flame arrester through a safety protection discharging system. According to the utility model, the separation efficiency of hydrogen isotopes is improved, so that ultralow-concentration deuterium-depleted water is produced more effectively, and compared with the prior art, the preparation process is simplified conveniently.

The invention relates to the field of flame arresters, and discloses a long-time flame arresting structure with a radial heat insulation function, which comprises a shell provided with a pressure relief air inlet end, a pressure relief air outlet end and a cavity; the burning-resistant structure is arranged at the pressure relief exhaust end and comprises a burning-resistant layer, the burning-resistant layer comprises a burning-resistant layer outer ring area, a burning-resistant layer inner ring area and a burning-resistant layer middle area which are sequentially arranged from outside to inside, the burning-resistant layer outer ring area and the burning-resistant layer middle area can allow pressure relief airflow to circulate, and the burning-resistant layer inner ring area is a closed heat insulation area. Therefore, under the condition that the burning-resistant structure burns, the closed heat insulation area can effectively slow down the transmission of burning heat of the burning-resistant layer outer ring area to the burning-resistant layer middle area, so that the phenomena of tempering and burnthrough caused by the accumulation of a large amount of burning heat of the burning-resistant layer middle area are avoided, and a large amount of burning heat can be quickly dissipated outwards in the burning-resistant layer outer ring area; and meanwhile, the outer ring area of the burning-resistant layer and the middle area of the burning-resistant layer are beneficial to considering the circulation efficiency of pressure relief airflow.

The invention provides a novel detonation flame arrester which comprises a first shell, and an inlet is formed in the first shell; the third shell and the first shell are symmetrically arranged, and an outlet is further formed in the third shell; the second shell body is arranged between the first shell body and the second shell body; the fire retardant unit is connected in the second shell in a sliding manner; a first spring connected with the first shell is arranged on one side of the fire retardant unit, and a second spring connected with the third shell is arranged on the other side of the fire retardant unit. When explosive shock waves enter the detonation flame arrester, the flame arresting unit slides under the explosive shock, compresses the first spring and stretches the second spring, or stretches the first spring and compresses the second spring.

The invention relates to the field of flame arresters, and discloses a long-time flame arresting structure with an air inlet flow guide function, which comprises a shell provided with a pressure relief air inlet end, a pressure relief air outlet end and a cavity communicated with the pressure relief air inlet end and the pressure relief air outlet end; the burning-resistant structure is arranged at the pressure relief exhaust end; and the air inlet end flow guide structure is arranged in the pressure relief air inlet end and is used for dividing the pressure relief air flow flowing into the pressure relief air inlet end into a plurality of regional air flows flowing towards different regions of the burning-resistant structure. According to the long-time fire-retardant structure, the air inlet end flow guide structure is arranged, so that long-time burning-resistant protection can be provided when accidents such as fire on the pressure relief position of the storage tank of the petrochemical device occur, further expansion of the accidents is prevented, and more preparation time is reserved for emergency rescue.

The invention relates to the field of flame arresters, and discloses a long-time flame arresting structure with an accumulated porous structure, which comprises a shell provided with a pressure relief air inlet end, a pressure relief air outlet end and a cavity communicated with the pressure relief air inlet end and the pressure relief air outlet end; the burning-resistant structure is arranged at the pressure relief exhaust end and comprises a burning-resistant layer, and the burning-resistant layer comprises a stacked porous burning-resistant layer; and the flow guide structure is arranged in the shell, is positioned on the upstream of the burning-resistant structure and is used for dividing the pressure relief airflow in the shell into a plurality of regional airflow flowing towards different regions of the burning-resistant structure. According to the long-time fire retardant structure, due to the fact that the flow guide structure is arranged, pressure relief airflow flowing into the shell can be actively shunted, and the shunted multi-strand regional airflow can flow through different regions of the burning-resistant structure, so that heat in the burning-resistant structure is dispersed, the risks of tempering and burnthrough phenomena are effectively reduced, the fire retardant duration is effectively prolonged, and the service life of the fire retardant structure is prolonged. And the stacked porous burning-resistant layer can well give consideration to fire retardance and circulation performance.

The invention relates to a low-concentration gas intrinsically safe combustion device, which relates to the technical field of coal resource utilization and comprises a safe ignition unit, a multi-stage backfire prevention unit, a multi-blow-off prevention unit, a combustion chamber, a control unit and an explosion venting unit. The safety ignition unit adopts a staged ignition mode, and the 100% ignition success rate is achieved through a high-energy igniter and a combustion starter; the anti-backfire unit forms three-stage protection through a micro-channel, a quick shut-off valve and an anti-detonation flame arrester, and flame returning is blocked; the anti-blow-off unit is combined with a high-heat-insulation labyrinth type combustion chamber by means of the entrainment effect of a swirler and a flame retention module, so that flame is stable and does not break away; the control unit achieves automatic interlocking control through various sensors, and the explosion venting unit conducts directional explosion venting during overpressure. According to the device, the low-concentration gas with the concentration lower than 30% is subjected to intrinsic safety combustion, and the risks of backfire, blow-off and explosion can be avoided.

The invention relates to the field of flame arresters, and discloses a long-time flame arresting structure with an exhaust flow guide function, which comprises a shell provided with a pressure relief air inlet end, a pressure relief exhaust end and a cavity communicated with the pressure relief air inlet end and the pressure relief exhaust end; the burning-resistant structure is arranged at the pressure relief exhaust end and comprises a burning-resistant layer, and the burning-resistant layer is provided with a plurality of burning-resistant layer subareas with different porosities; and the flow guide structure is arranged in the shell, is positioned on the upstream of the burning-resistant structure and is used for dividing the pressure relief airflow in the shell into a plurality of regional airflow flowing towards different regions of the burning-resistant structure. Under the action of multiple diversion of the burning-resistant layer subareas and the diversion structure, the pressure relief airflow can be actively shunted, and the shunted multi-strand regional airflow can flow through different regions of the burning-resistant structure to disperse heat, so that the risk of tempering and burnthrough phenomena is effectively reduced, and the fire retardance duration is effectively prolonged.

The invention relates to the technical field of automobile battery fire prevention, and mainly discloses an anti-spontaneous combustion fire-retardant battery which comprises a battery shell, a plurality of battery packs are arranged in the battery shell, a plurality of pressure relief holes are further formed in the battery shell, and fire barriers are further arranged on the pressure relief holes; the flame arrester comprises a plurality of layers of barrier covers, a flame arresting disc is further arranged at the joint of the barrier covers and the pressure relief hole, and a flame arresting seam is formed in the flame arresting disc; wherein the barrier covers are provided with a plurality of flow-through hole layers in the flow measuring direction of the combustion medium, the flow-through hole layers in every two adjacent barrier covers are arranged in a staggered manner, and the flow-through hole layers and the fire-retardant seams are communicated with the inner space and the outer space of the battery shell, and the technology that after thermal failure of the battery, safe pressure relief can be achieved, and flames can be prevented from spreading outwards can be achieved.

The blast furnace front oxygen enrichment system comprises a low-pressure oxygen pipeline laid between an oxygen station and an iron making plant, the low-pressure oxygen pipeline is connected with a blast furnace blower through an oxygen branch pipe, an air outlet of the blast furnace blower is communicated with an air inlet of a blast furnace, and the oxygen branch pipe is provided with a flame arrester and a second manual stop valve. A security nitrogen pipe is connected between the flame arrester and the second manual cut-off valve, and a stop valve, a nitrogen buffer tank and a nitrogen quick cut-off valve are sequentially arranged on the security nitrogen pipe in the airflow direction; the oxygen analyzer monitors the oxygen content in the oxygen branch pipe in real time and transmits a monitored value to the PLC, the PLC judges whether the oxygen enrichment rate of a preset instruction is reached or not, and the flow regulating valve is regulated through the PLC; the system is simple in structure, reasonable in design, convenient to implement, capable of being effectively applied to blast furnace smelting, capable of saving electric energy and production cost, good in using effect and convenient to popularize and use.

The invention relates to the field of flame arresters, and discloses a long-time flame arresting structure with an axial heat insulation function, which comprises a shell provided with a pressure relief air inlet end, a pressure relief air outlet end and a cavity; the burning-resistant structure is arranged at the pressure relief exhaust end and comprises a plurality of burning-resistant layers which are sequentially arranged at intervals in the axial direction of the pressure relief exhaust end, the burning-resistant layer located at the most downstream is a burning side burning-resistant layer, and the burning-resistant layer located at the upstream of the burning side burning-resistant layer is a protection side burning-resistant layer; the heat insulation supporting structure is arranged between the two adjacent burning-resistant layers and is in contact with the two adjacent burning-resistant layers; and the flow guide structure is arranged in the shell, is positioned on the upstream of the burning-resistant structure and is used for dividing the pressure relief airflow in the shell into a plurality of regional airflow flowing towards different regions of the burning-resistant structure. The long-time fire-retardant structure can provide long-time burning-resistant protection when accidents such as fire break out at the pressure relief position of the storage tank of the petrochemical device occur, so that further expansion of the accidents can be prevented, and more preparation time is reserved for emergency rescue.

The utility model relates to the technical field of fire-blocking safety, and specifically to an explosion-proof flame arrester, comprising an upper shell, a lower shell and a mounting assembly, wherein the mounting assembly comprises a fire-blocking net, a limiting ring, a mounting shell, a support rod, a first flange and a second flange; the upper shell and the lower shell are both hemispherical, so as to increase the impact bearing capacity, the upper shell and the lower shell are first connected to a pipeline, and then the fire-blocking net is slidably installed inside the mounting shell, the limiting ring limits the position of the mounting fire-blocking net, and then the first flange and the second flange on the mounting shell are connected and installed, so as to fix the mounting shell between the upper shell and the lower shell, and when disassembling and assembling, only the mounting shell needs to be disassembled, and the support rod supports one end of the fire-blocking net away from the limiting ring, thereby solving the problem that the entire device needs to be disassembled when the fire-blocking net is inspected or replaced during actual use of the existing equipment, and the operation is cumbersome.

The utility model discloses a corrosion-resistant flame arrester, including a shell, a mounting groove is provided in the middle of the outer side of the shell, a fire-blocking core is arranged in the middle position inside the shell, and the inner wall of the shell and the outer wall of the fire-blocking core are coated with an anti-corrosion layer; and also includes: a limit plate is installed on the outer side of the fire-blocking core, and a fixing seat is fixed on the left side of the top of the shell. The corrosion-resistant flame arrester is coated with an anti-corrosion layer on the shell and the fire-blocking core, so as to avoid the outer wall of the fire-blocking core and the inner wall of the shell from being corroded after the flame arrester is used for a long time, thereby prolonging the service life of the flame arrester, and then when the fire-blocking core needs to be replaced, it is only necessary to rotate the worm in the reverse direction to release the fixing of the limit plate, and then pull out the fire-blocking core to remove it, and then insert the new fire-blocking core into the mounting groove on the shell through the limit plate, and rotate the worm in the forward direction to complete the installation of the fire-blocking core, so as to facilitate the rapid replacement of the fire-blocking core.

The invention relates to the technical field of oil field oil gas gathering and transportation, in particular to an oil storage tank breather valve and hydraulic safety valve winter anti-freezing and anti-blocking device which comprises an oil storage tank body, a connecting pipe, a flame arrester, a hydraulic safety valve, a breather valve, a mounting pipe and a first blocking net. The oil storage tank is reasonable and compact in structure and convenient to use, liquid in mixed steam can be filtered and then left in the oil storage tank body through the arrangement of the first blocking net, dry gas is exhausted, the contact amount of moisture, a valve disc and liquid seal oil is reduced, the phenomena of water accumulation in a liquid seal groove, freezing in winter and freezing and frosting of a pressure valve disc in winter can be effectively reduced, and the service life of the oil storage tank is prolonged. Meanwhile, the fire barrier net can be prevented from being in contact with mixed wet steam, corrosion of the fire barrier net is effectively prevented, the service life is prolonged, liquid filtered by the first blocking net contains oil components, oil loss is reduced, and the device has the advantages of being safe, capable of saving labor, simple, convenient and efficient.

The invention belongs to the technical field of pipeline safety, and particularly relates to an intelligent self-cleaning flame arrester device. The device comprises a cyclone separation device, a fire retardant device, a solid-liquid separation device and an intelligent cleaning system, large-particle impurities can be removed in the impurity pre-separation process based on the cyclone separation device, the blockage probability and the cleaning frequency of a fire retardant core are reduced, the production continuity is improved, and meanwhile, the production efficiency is improved. According to the intelligent cleaning system, the design of multi-angle nozzle mounting holes and nozzle base rotation is adopted, full-coverage cleaning of the end face of the fire-retardant core is achieved, cleaning dead angles are reduced, a heating module of the intelligent cleaning system can further dehydrate and dry pipeline gas, oil stains, impurities and the like blocking the fire-retardant core are made to fall off more easily, and the cleaning efficiency and effect are further improved.

The utility model discloses a flame arrester fire-retardant chip production device which comprises an operation table, the bottom face of the operation table is movably connected with a second extrusion wheel, the center of the top face of the operation table penetrates through a second through groove, the second extrusion wheel is movably connected in the second through groove in a penetrating mode, the top face of the operation table is connected with a top plate in a telescopic mode, and the center of the top face of the top plate penetrates through a first through groove. The top face of the top plate is fixedly connected with two handles in mirror symmetry, the side face of the top plate is movably connected with a limiting piece, the limiting piece is fixed to the top face of the operation table, and the bottom face of the top plate is movably connected with a feeding piece. Adjustment of the distance between the first extrusion wheel and the second extrusion wheel and pressure adjustment of the pressure device can be completed at the same time only by adjusting the distance between the top plate and the operation table.

A feed valve, a tail gas outlet valve and a filter circulating valve are arranged at the top of a stirring tank, the upper side surface of the stirring tank is connected with the upper part of a filter through a filter overflow valve pipeline, and a bottom outlet of the stirring tank is connected with the bottom of the filter after being connected with a feed pump; a filter discharge pipe is divided into two paths, one path is connected with the receiving tank through a discharge valve, and the other path is connected with a filter circulating valve; a discharge pipe of the receiving tank is connected with a finished product storage tank after being connected with a discharge pump; a tail gas pipeline with a tail gas outlet valve at the upper part of the receiving tank is connected with a gas inlet of a spiral plate heat exchanger after being converged with a tail gas pipeline with a stirring tank tail gas outlet valve; the upper gas outlet of the heat exchanger is connected with a gas buffer tank after being connected with an induced draft fan, a cooling water outlet valve is arranged on the upper side, and a cooling water inlet valve is arranged on the lower side; a lower outlet pipeline is connected with a buffer tank bottom valve, then is converged with a discharge pipeline of the heat exchanger and then is connected with a solvent recovery tank, and a discharge valve is arranged at the bottom of the gas buffer tank. The device is pollution-free in production, energy-saving and consumption-reducing.

The present application relates to waste gas treatment technical field, especially to a kind of direct combustion incinerator water seal fire stopper anti-backfire system and application, including incinerator, combined combustor, waste gas source, waste gas fan, water seal fire stopper main body, desalted water source, desalted water injection component, boundary butterfly valve, waste gas pipeline first hand valve, waste gas pipeline second hand valve, waste gas pipeline third hand valve, waste gas pipeline fourth hand valve, flammable alarm instrument LEL, waste gas pipeline switch valve, water seal fire stopper air inlet pipeline, water seal fire stopper air outlet pipeline and water seal fire stopper burst disc;Water seal fire stopper air inlet pipeline and water seal fire stopper air outlet pipeline are all arranged on water seal fire stopper main body, waste gas source is connected with waste gas fan by pipeline, solve the technical problem that the anti-backfire mode in prior art encounters deflagration backfire or high concentration waste gas impact, fire resistance reliability is insufficient, easily failure due to filter element damage, cannot effectively block flame back to upstream pipeline and device.

The present invention provides a method and system for detecting the operating status of a hydrogen pipeline flame arrester. The key points of the technical solution include: obtaining historical normal data and setting threshold parameters corresponding to various detection information; obtaining detection information of various sensors in real time and preprocessing it; performing time-frequency domain analysis on the preprocessed vibration information to obtain multiple IMF components and residuals, extracting vibration characteristics to perform preliminary vibration anomaly judgment; in response to abnormal vibration characteristics, calculating the dynamic vibration threshold corresponding to the current sampling moment; and making an abnormal judgment on the operating status of the flame arrester at the current sampling moment. The present invention can monitor the abnormal information of the flame arrester in real time, accurately judge the current status of the flame arrester, avoid safety hazards caused by flame arrester failure, and at the same time reduce the tedious operations of manual detection and avoid omissions in manual detection.

The utility model belongs to the field of flame arresters, and discloses a flame arrester shock wave turning device which comprises a shell used for buffering high-speed linear impact of flame shock waves, the shell comprises a left shell body and a right shell body, and the left shell body and the right shell body are arranged on the left side and the right side of a main body plate respectively. A plurality of groups of spiral blades are distributed on the circumferences of the inner sides of the left shell and the right shell, a fire arresting core assembly is clamped in the center of the inner side of the main body plate, a fire arresting core is composed of a plurality of groups of filter plates, and the plurality of groups of filter plates are transversely arranged according to the sequence that the hole diameters are approximately small and gradually increased; fixing rings penetrating through the filter plates are arranged in the centers of the inner sides of the filter plates, so that when a fire occurs, flame shock waves directly penetrate through holes of the fire arresting core, and the fire spreads at the other end of the pipeline.

The anti-deflagration pipeline flame arrester comprises a first valve body and a second valve body, the first valve body and the second valve body are both in a circular truncated cone shape, connecting flanges are arranged on the short-diameter sides of the first valve body and the second valve body, and a first fixing flange and a second fixing flange are arranged on the long-diameter sides of the first valve body and the second valve body respectively. A first sealing ring is arranged on the inner surface of one side of the first fixing flange, a second sealing ring is arranged on the outer surface of the first sealing ring, and one side of the second sealing ring is connected with one side face of the second fixing flange. By arranging the first fixing ring and the second fixing ring, the first fixing ring and the second fixing ring have extremely high hardness and abrasion resistance, the situation that the sealing performance is reduced due to abrasion caused by long-time use is avoided, and the situation that the sealing performance is reduced due to the fact that the first fixing flange and the second fixing flange are frequently taken down is prevented; and the explosion phenomenon in the pipeline is further caused.

The utility model discloses a natural gas melting furnace for melting aluminum ingots, and belongs to the technical field of metal melting equipment. The melting furnace comprises a box body and a furnace body, a liquid oxygen storage tank, a VPSA oxygen generator and a waste gas treatment box are integrated in the box body, and the liquid oxygen storage tank is connected with an oxygen supply pipeline through a vaporizer; the furnace body shell adopts a gradient refractory layer structure; the oxygen supply pipeline is of a Y-shaped parallel structure, a flame arrester and a dynamic pressure balance valve are arranged in the oxygen supply pipeline, and the oxygen flow is adjusted through linkage of a pressure sensor and a controller. A water-cooling observation window is arranged on the inner wall of the furnace body, and a thermal infrared imager is installed on the outer side to monitor the temperature of a molten pool and feed back and control combustion power. According to the utility model, efficient melting, safe oxygen supply and accurate temperature control are realized through structure optimization, and the device is suitable for continuous melting scenes of aluminum ingots.