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81 results about "Particle trapping" patented technology
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Particle trap. A device used to confine charged or neutral particles where their interaction with the wall of a container must be avoided. Electrons or protons accelerated to energies as high as 1 teraelectronvolt (10 12 electronvolts) are trapped in magnetic storage rings in high-energy collision studies.
Machining oil mist separation real-time monitoring system
InactiveCN119973723AMeasurement/indication equipmentsGrinding feed controlParticle trappingMonitoring system
The invention relates to the technical field of oil mist separation, in particular to a machining oil mist separation real-time monitoring system which comprises a particle trapping monitoring module, an airflow adjustment control module, a particle path judgment module, a boundary recognition analysis module and a separation efficiency feedback module. According to the method, through combined monitoring of the oil mist particle concentration and the airflow speed, dynamic analysis of the particle trapping efficiency and deviation direction identification are achieved, the diffusion trend identification precision is improved, the guide angle is introduced to be compared with the wind speed parameter, the insufficient response area is defined, the adjustment precision and real-time performance are enhanced, and the particle sedimentation direction is classified and identified; the method comprises the steps of constructing a structured motion path, locking space abnormal behaviors, fusing visible light and near-infrared refraction angle changes, identifying particle boundary features, improving the abnormal distribution analysis capability, carrying out superposition judgment on boundary abnormality and an adjustment response region, evaluating the separation stability, and feeding back separation capability distribution in a monitoring region. And the trend tracking and separation efficiency analysis capability is enhanced.
Owner:SHENZHEN RUIGESHENG EQUIP CO LTD
Method for generating staggered superposition double-layer Airy light beam array capable of realizing double focusing
The invention discloses a method for generating a staggered superposition double-layer Airy light beam array capable of realizing double focusing, and belongs to the technical field of structured light regulation and control and special light beam generation. Aiming at the problems that the focusing characteristics of light beam arrays in transmission in different superposition modes are difficult to fully reveal in the prior art and the generation of an optical bottle depends on complex phase modulation or multiple optical elements, the method comprises the following steps: constructing a first layer of Airy light beam array and setting regulation and control parameters, constructing a second layer of Airy light beam array with staggered azimuth angles and setting regulation and control parameters, and constructing a second layer of Airy light beam array with staggered azimuth angles; a longitudinal double-focusing structure is realized through staggered superposition of double-layer Airy light beam arrays, and a vortex phase is introduced into double-focusing array light beams to form an optical bottle structure. According to the invention, the structure is simple, the longitudinal double-focusing and optical bottle structure can be realized only through the initial light field structure design, the focusing intensity and the regulation freedom degree are high, and the application of the light beam in the related fields of microscopic imaging, particle capture and the like is expanded.
Owner:SHANXI UNIV
Particle trap regeneration control method, electronic equipment and vehicle
ActiveCN119754912AElectrical controlInternal combustion piston enginesParticle trappingControl engineering
The invention provides a particle trap regeneration control method, electronic equipment and a vehicle, and is applied to the technical field of vehicle intelligent control. The method comprises the steps that the historical parking regeneration frequency of a particle trap is obtained; in response to determining that the historical parking regeneration times are greater than or equal to preset parking regeneration times, correcting a preset default carbon loading capacity threshold value to obtain a target carbon loading capacity threshold value, performing regeneration control according to the target carbon loading capacity threshold value and the real-time carbon loading capacity of the particulate filter, and determining a regeneration control result; judging whether the particulate filter meets a forced regeneration condition or not based on the regeneration control result; in response to determining that the particulate trap meets the forced regeneration condition, a forced regeneration strategy for the particulate trap is executed. The regeneration success rate of the particulate filter in the vehicle running process and under the idle speed condition is increased, and diesel engine oil dilution and engine faults caused by frequent regeneration failures are prevented.
Owner:GREAT WALL MOTOR CO LTD
Method and device for low-power particle capture and local thermal detection based on tip-enhanced Raman optical tweezers
PendingCN120293346ARaman scatteringThermometers using physical/chemical changesParticle physicsMaterials science
The invention relates to the field of nano science and nano technology, in particular to a low-power particle capture and local thermal detection method and device based on tip-enhanced Raman optical tweezers, under laser irradiation, directional optical force is generated through an enhanced electric field between a nano tip and metal particles, and capture of the metal particles is achieved; raman scattering on the surface of the needle tip can be excited through focused laser, and the local temperature of the needle tip can be obtained by analyzing the change of a Raman characteristic peak. According to the method, directional optical force is generated through an enhanced electric field between the needle tip and the metal particles to capture the metal particles, the problem that the metal particles cannot be captured by single-beam 532 nm laser is solved, the power density of captured particles is reduced, and the adverse effect of the heat effect on capture is reduced. The method also can amplify the Raman signal of the needle tip to realize Raman detection of a local position, realizes temperature monitoring at the capture position, and lays a foundation for exploring the influence of the thermal effect on the capture process.
Owner:WUHAN UNIV
Particle trap based on shark skin structure
PendingCN119531995AOptimizing Flow PathsReduced flow separationExhaust apparatusSilencing apparatusParticle trappingPorous medium
The invention discloses a particle trap based on a shark skin structure, and relates to particle traps. A plurality of air inlet ducts and air outlet ducts are formed in the carrier, porous medium wall surfaces are arranged between the adjacent air inlet ducts and air outlet ducts, and a plurality of shark skin odontoid imitating placoid scale structures are arranged on the hole walls of the air inlet ducts. By simulating a streamline structure of shark skin, a shark skin odontoid imitating placoid scale structure is designed in the air inlet duct, and the placoid scale structure can destroy a boundary layer and delay flow separation, so that differential pressure resistance is reduced, the effect of optimizing a flow path of airflow is achieved, and exhaust back pressure is effectively reduced.
Owner:KUNMING UNIV OF SCI & TECH
A method and device for simulating wind erosion at a construction site
ActiveCN118937132BEarth material testingInvestigating abrasion/wear resistanceParticle trappingEnvironmental engineering
The present invention provides a method and device for simulating wind erosion at a construction site, the method comprising the following steps: Step 1: Collect 0-5 cm surface soil samples of the riverside slope to be studied using a base with a detachable baffle on one side; Step 2: Combine a cover with an adjustable baffle with a base filled with topsoil to form an airtight space; Step 3: Connect an adjustable-speed blower to the cover to ensure airtightness at the interface, adjust the wind speed to a preset value, and simulate the normal wind speed of the research point; Step 4: Install a particle capture device at the opening on the opposite side of the cover connected to the blower to receive particles generated by wind erosion, and complete the measurement of wind erosion amount and particle size composition. This method fills the data gap caused by the incomplete collection of wind erosion products by the existing wind erosion monitoring method. The technical solution of the adjustable wind speed and slope windward angle of the present application has the technical effect of restoring the current and simulating the acquisition of wind erosion parameters under different degrees of future climate change conditions.
Owner:BEIJING WATER SCI & TECH INST
Cold well type particle trap applied to film coating process
The utility model relates to the field of semiconductor film coating, in particular to a cold well type particle trap applied to a film coating process, which comprises a cavity, the top of the cavity is connected with an upper cover through a screw, the top of the upper cover is provided with a cooling mechanism, the cooling mechanism comprises a water-cooling buried pipe, the water-cooling buried pipe is embedded in the upper cover, and the water-cooling buried pipe is connected with the upper cover through a screw. One end of the water-cooling buried pipe communicates with a water inlet pipe. The electric heating pipe is arranged and used for heating process gas entering the cavity, particles in the gas are conveniently captured, the water-cooling buried pipe, the water inlet pipe, the quick-insertion type cooling pipe connector and the water outlet pipe are arranged and can communicate with external water supply equipment, cooling water is conveyed into the water-cooling buried pipe, and the bottom of the upper cover is cooled; process gas flows through the interior of the cavity through the gas inlet pipe, and trapped particles are quickly settled and condensed on the surfaces of the upper flow guide fins through high-temperature reaction and temperature difference brought by the cooling mechanism of the upper cover part.
Owner:SHENYANG YUQIANG TECH CO LTD
A particle trap for a mocvd apparatus
ActiveCN117942680BDispersed particle filtrationTransportation and packagingParticle trappingButterfly valve
The application discloses a kind of particle traps for MOCVD equipment, comprising: gas inlet flange, shell, mounting base, filter core assembly and gas outlet flange;Two ends of shell are connected gas inlet flange and gas outlet flange respectively, gas inlet flange is used to connect MOCVD equipment, and gas outlet flange is used to connect exhaust gas processor;Shell inside is equipped with mounting base, and mounting base divides into filter chamber and mixing chamber inside shell;Multiple filter core assemblies are installed side by side on mounting base, and filter core assembly is located in filter chamber, and the top of filter core assembly is sealed;The exhaust gas discharged by MOCVD equipment enters filter chamber inside by gas inlet flange, and enters filter core assembly inside by filter core assembly side portion after filtering, and then is discharged into mixing chamber by filter core assembly bottom portion, and finally filtered exhaust gas is discharged by gas outlet flange.The application has the advantages of compact structure, easy maintenance and uniform capture of small particles in process gas, solves the problem of too much sediment in pipeline caused by harsh environment of MOCVD equipment vacuum system due to particles, difficult to extract high vacuum, short maintenance cycle of butterfly valve sealing ring, short service life of dry pump and other problems.
Owner:48TH RES INST OF CHINA ELECTRONICS TECH GROUP CORP
A kind of body paint exhaust treatment tower spray circulating water tank
The present application relates to a kind of vehicle body paint exhaust treatment tower spray circulating water tank, belong to industrial waste gas treatment equipment technical field.The device includes tower body, spray core shaft, drive ring seat, first suspension ring and second suspension ring, and the inside of tower body is equipped with processing cavity, and its upper and lower ends are equipped with shaft support, bottom is equipped with liquid collecting tank, and side wall is equipped with air inlet;Spray core shaft includes guide cone, guide cap, sub-guide ball and main shaft core, and circulating pump is arranged in main shaft core, and spray core shaft surface is provided with spray hole;Multiple drive ring seats are respectively corresponding to control multiple suspension rings, and its surface is equipped with magnetic yoke coil and exciter, and the permanent magnet block of drive suspension ring outer periphery realizes magnetic suspension rotation.The present application is by spray-magnetic suspension disturbance-flow channel trapping coupling mechanism, so that water and waste gas are fully contacted, agitated and dispersed in processing cavity, while extending waste gas residence time, improve particle capture efficiency and purification capacity, applicable to high concentration workshop waste gas treatment scene.
Owner:SUZHOU TIANCHENG PAINTING EQUIP ENG CO LTD
Method and related equipment for regenerating particulate filter under parking power generation condition
ActiveCN118959173Bextended use timeReduce the frequency of overloadHybrid vehiclesElectrical controlParticle trappingElectrical battery
Owner:WEICHAI POWER CO LTD
Detection device and cleaning method for blockage of DPF (diesel particulate filter)
PendingCN119616640Areduce pollutionavoid damageInternal combustion piston enginesExhaust apparatusParticle trappingPorous medium
The invention discloses a detection device and a cleaning method for DPF blockage, and relates to the technical field of DPF blockage detection and cleaning, the device comprises a porous medium filtering wall surface which is mainly located on the inner wall of a particle trap, an infrared imager which is arranged in the porous medium filtering wall surface of the particle trap, an ultrasonic vibration device which is arranged outside the particle trap, and a detection device which is arranged on the inner wall of the particle trap. According to the device, the working condition of the particulate filter in a diesel engine is simulated by introducing fuel waste gas, the blockage condition of a porous medium filtering wall surface is detected in real time by adopting an infrared thermal imaging technology, and blocked particulate matters are removed by adopting an ultrasonic oscillation technology, so that the operation reliability of the particulate filter is guaranteed; and in addition, a vibration adjusting mode is set, so that the material of the particulate filter is not damaged while the blockage is cleaned.
Owner:WUHAN UNIV OF TECH
Efficient light-driven particle capture actuator based on photo-thermal composite film
The invention discloses an efficient light-driven particle capture actuator based on a GO / PDMS-AuNBPs composite film, and belongs to the technical field of micro-nano control and biomedical engineering. The actuator aims at solving the problems that an existing light-driven particle capturing technology is low in photothermal conversion efficiency, depends on high-power laser, and is poor in thermal field stability and single in function. The core structure comprises a photo-thermal composite film and an optical fiber F-P sensing structure. The photo-thermal composite film is composed of a graphene oxide (GO) film and a polydimethylsiloxane (PDMS) film doped with gold nano bipyramid (AuNBPs). The optical fiber interference structure is formed by welding a single mode fiber (SMF) and a hollow fiber (HCF), and the end face of the HCF is coated with a photo-thermal composite film to construct a Fabry-Perot interference (FPI) microcavity; and the sensing unit realizes real-time monitoring of the capture state by monitoring the change of the reflection spectrum of the FPI microcavity. During working, the FPI microcavity plays a role in expanding a beam of a light field so as to improve the light field utilization rate of the GO film. PDMS regulation and control form an axisymmetric temperature potential well, and Marangoni force caused by temperature gradient drives particle capture. The lowest excitation power of the actuator is 11.9 mW, particles of 5-400 microns can be captured, and the actuator has low power consumption, high stability and biological compatibility and is suitable for living cell control, micro-reactor construction and micro-fluidic chip integration.
Owner:GUILIN UNIV OF ELECTRONIC TECH
A method and related device for controlling particles in vehicle exhaust
An embodiment of the present application provides a method and related device for controlling particles in vehicle exhaust. The method includes: obtaining current operating condition data of a target vehicle; determining a corresponding particle control strategy according to the current operating condition data; controlling the opening and closing degrees of a first control valve and a second control valve according to the particle control strategy. The first control valve is used to control the opening and closing of a first exhaust pipe after the TWC of the target vehicle, and the second control valve is used to control the opening and closing of a second exhaust pipe after the TWC. A GPF is installed in the second exhaust pipe, and the GPF is used for particle trapping. Through the above solution, it is possible to effectively control the particle number of vehicle exhaust under various operating conditions.
Owner:WEICHAI POWER CO LTD
Efficient condensation type particulate filter
The utility model relates to the technical field of semiconductor ALD (Atomic Layer Deposition) film coating and PECVD (Plasma Enhanced Chemical Vapor Deposition) process systems, in particular to an efficient condensation type particle trap which comprises a movable bottom plate device, a water mist spraying system and a barrel body with a particle collecting function, the utility model has the advantages that the particulate matter trapping effect is good, the position of the air inlet can be changed, the process gas flowing path is increased by three to four times compared with the previous product, the guide plate structure is added in the process gas flowing area, and the time for increasing the process gas flowing path is prolonged along with the reduction of the temperature of the process gas. Particle dust is fully precipitated and attached to the surfaces of a guide plate, a partition plate and a cylinder wall in the catcher, the probability of intercepting and attaching particles can be effectively improved, meanwhile, better compatibility is achieved, the butt joint position of an air inlet and a process pipeline is not limited any more, and the position of the air inlet can be adjusted according to the arrangement height of the process pipeline; and the particulate matter collecting function and effect of the trap are not influenced.
Owner:SHENYANG YUQIANG TECH CO LTD
A particulate filter regeneration method, device, storage medium, and controller
ActiveCN116335797Bachieve regenerationGood regeneration performanceInternal combustion piston enginesExhaust apparatusParticle trappingLow speed
The present application belongs to the technical field of vehicle engineering, and particularly relates to a particle trap regeneration method, device, storage medium and controller; through reversing the installation of the particle trap and interfacing the rotating purging component, the regeneration of the trap is realized on the engine tail gas pipeline; wherein, in order to improve the regeneration effect, a cyclic or intermittent variable working condition control process can be introduced; through setting the first type of working condition and / or the second type of working condition and switching, the pulsating tail gas output is introduced; in the process, high load and high speed and low load and low speed working conditions can be respectively used to realize different excitation states of the tail gas; in addition, the preset lean burn working condition and high temperature tail gas configuration can be combined to further improve the regeneration effect; at the same time, the differential pressure detection closed loop of the two ends of the trap can be introduced to optimize the monitoring ability of the regeneration process, timely end the regeneration process, and improve the operation efficiency; the application of the related products will be helpful to reduce the emission of the internal combustion engine and improve the fuel consumption.
Owner:UNITED AUTOMOTIVE ELECTRONICS SYST
Bubble discharging method, particle trapping apparatus, and particle analyzing apparatus
A technology for efficiently discharging a bubble present in a fluid in a chamber is provided. There is provided a bubble discharging method carried out in a chamber including a microchip that includes at least one well or through hole to divide a space into a first space and a second space, the bubble discharging method including a pressurizing step of applying a positive pressure to a fluid in the chamber, and a valve opening / closing step of operating a valve for opening / closing a first flow path connected to the first space and / or a second flow path connected to the second space.
Owner:SONY GROUP CORP
A motor vehicle exhaust filtering and purifying device
ActiveCN224396572UImprove installation efficiencyEasy to installExhaust apparatusSilencing apparatusParticle trappingMechanical engineering
The utility model discloses a kind of motor vehicle exhaust filtering and purifying device, it is related to exhaust purification technical field.The utility model includes particle trap, further include: installation portion, the installation portion is arranged outside particle trap;And unlocking portion, the unlocking portion is arranged above particle trap;Wherein, unlocking portion is located in installation portion, the installation portion includes support assembly, the support assembly is located outside particle trap;And locking assembly, the locking assembly is provided with four, four the locking assembly is located in support assembly inside;Wherein, four the locking assembly is array distribution.The utility model sets up installation portion, solved the existing motor vehicle exhaust filtering and purifying device in use process, it is inconvenient to install particle trap on vehicle, in installation process, positioning needs to be repeatedly carried out by staff, then carries out complex operation, time-consuming and labor-saving, greatly reduced the installation efficiency problem of particle trap.
Owner:MINXIAN XINZHONGCHENG MOTOR VEHICLE SERVICE CO LTD
Particle trap based on honeycomb structure
The utility model discloses a particle trap based on a honeycomb structure, which relates to particle traps and comprises a carrier. A plurality of air inlet duct groups and exhaust duct groups which are sequentially and alternately arranged around the center position of the carrier are arranged in the carrier, each air inlet duct group is composed of a plurality of air inlet ducts, and each air inlet duct is of a honeycomb-shaped hexagonal structure; the exhaust duct set is composed of a plurality of exhaust ducts, and the exhaust ducts are of a honeycomb-shaped hexagonal structure. And porous medium wall surfaces are arranged between the air inlet ducts and the exhaust ducts in the adjacent air inlet duct group and the exhaust duct group. By simulating the honeycomb hexagonal structure, the hydrodynamic characteristics are optimized, the back pressure is reduced, the particulate trapping efficiency is improved, the emission of particulate matters of a diesel engine is reduced, and positive significance is achieved for environmental protection.
Owner:KUNMING UNIV OF SCI & TECH
Particle collector
1. The name of this design product: Particle collector. 2. Purpose of this design product: This design product is used as a particle collector in an air purifier to adsorb particles in the gas. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.
Owner:TIANHE COLLEGE GUANGDONG POLYTECHNIC NORMAL UNIV
Particle trapping device suitable for evaporation over-current experiment and use method of particle trapping device
PendingCN120385531AWithdrawing sample devicesMaterial analysis by electric/magnetic meansParticle trappingChemical physics
The invention discloses a particle trapping device suitable for an evaporation overcurrent experiment and a use method of the particle trapping device, and relates to the technical field of metal evaporation experiment research. And meanwhile, the trapping structure space adjusting module can adjust the space position of the distributed trapping sampling module, so that the measurement of the ion proportion and the research on the particle overcurrent distribution characteristics in the metal evaporation experiment process can be realized.
Owner:RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
Gas taking pipe assembly and differential pressure sensor assembly
PendingCN120102226AInternal-combustion engine testingWithdrawing sample devicesParticle trappingMechanical engineering
The invention provides a gas taking pipe assembly and a differential pressure sensor assembly. Comprising a first gas taking pipe, a second gas taking pipe and a buffer bottle, the first gas taking pipe is used for being communicated with the particle trap and transmitting the high-temperature gas flowing out of the particle trap; the second gas taking pipe is used for being communicated with a gas taking port of the differential pressure sensor; the buffer bottle comprises a containing cavity, the bottom end of the buffer bottle is communicated with the first gas taking pipe, the top end of the buffer bottle is communicated with the second gas taking pipe, and the orthographic projection of the end, located in the buffer bottle, of the first gas taking pipe in the first direction is staggered from the orthographic projection of the end, located in the buffer bottle, of the second gas taking pipe in the first direction; the first direction is the direction from the top of the buffer bottle to the bottom of the buffer bottle; wherein the accommodating cavity is used for condensing and storing the high-temperature gas flowing out of the first gas taking pipe, so that the high-temperature gas is prevented from entering the differential pressure sensor after being condensed. According to the method, the fault rate of the differential pressure sensor is reduced.
Owner:SINO TRUK JINAN POWER CO LTD
Controllable vortex dual-ring laser based on fixed-intercept zooming ring pump orthogonal polarization
ActiveCN116683267BSemiconductor laser arrangementsOptical resonator shape and constructionSpin angular momentum of lightLaser array
The application discloses a fixed-intercept zooming ring pumping orthogonal polarization controllable vortex double-ring laser, which comprises a fiber-coupled output semiconductor laser array (1), a plano-convex lens (2), a fixed-intercept zooming ring pumping beam generating system (3), a first conical mirror (4), a laser gain medium (5), a V-shaped crystal conical mirror (6), a plane mirror (7) and a second conical mirror (8). The laser can realize orthogonal polarization controllable vortex double-ring laser output, and the topological charge number of the laser vortex phase can be continuously adjusted. The fixed-intercept zooming ring pumping system can make the laser maintain high mode matching degree during the adjustment process. The spin angular momentum and the orbital angular momentum carried by the laser beam can improve the particle trapping efficiency and reduce the thermal damage of the biological cells caused by the laser beam. The double polarization characteristics of the inner ring tangential and the outer ring radial can be fully utilized, the particle can be captured, and high-resolution imaging can be performed at the same time, so that the application of the vector vortex light field in the biomedical field can be greatly expanded.
Owner:YUNNAN UNIV
Silicon carbide particle trap as well as preparation method and application thereof
PendingCN120571330ADispersed particle filtrationTransportation and packagingCarbide siliconParticle trapping
The invention relates to a silicon carbide particle trap and a preparation method and application thereof, the silicon carbide particle trap comprises a compact inner layer, a transition layer and an outer layer, the transition layer and the outer layer are sequentially stacked on the surface of at least one side of the compact inner layer, and the transition layer is arranged between the compact inner layer and the outer layer; the porosity of the compact inner layer is lt; the porosity of the transition layer is lt; the porosity of the outer layer; the average aperture of the compact inner layer is lt; the average aperture of the transition layer is lt; and the average pore size of the outer layer. According to the silicon carbide particle trap provided by the invention, by arranging the compact inner layer, the transition layer and the outer layer of which the porosity and the average pore size are sequentially increased and combining the design of the position relationship of all the layers, the thermal shock resistance of the particle trap is improved while the coexistence of high filtering efficiency and high mechanical strength of the silicon carbide particle trap is realized.
Owner:JIANGSU GUANLAN NEW MATERIAL TECH CO LTD
Secondary cyclone dust removal equipment for underground air purification
The invention discloses secondary cyclone dust removal equipment for underground air purification, and belongs to the technical field of coal mine dust removal equipment, the secondary cyclone dust removal equipment comprises a vertically arranged primary cyclone dust collector, and is characterized in that the upper part of the primary cyclone dust collector is communicated with a vertically arranged secondary cyclone dust removal integrator; the secondary cyclone dust removal integrator comprises a plurality of secondary cyclone dust removers which are distributed in a circumferential array manner, a dust collection barrel communicated with the lower parts of all the secondary cyclone dust removers, and an air collection barrel communicated with the upper parts of all the secondary cyclone dust removers. According to the dust removal equipment, the two-stage cyclone dust removers are adopted to work in parallel, compared with a traditional first-stage cyclone dust remover, the dust emission concentration is effectively reduced, and due to the fact that the multiple second-stage cyclone dust removers are arranged, fine particles can be captured more efficiently; the integrated design saves space and adapts to the underground narrow environment.
Owner:YANKUANG ENERGY GRP CO LTD
Regeneration control method of integrated particulate filter and engine exhaust gas aftertreatment system
PendingCN121593881AInternal combustion piston enginesExhaust apparatusCatalytic transformationParticle trapping
The invention discloses a regeneration control method of an integrated particle trap, the integrated particle trap comprises a shell and a core body, components for realizing oxidation type catalytic conversion and particle trapping are integrated in the core body, and the method comprises the following steps: in the regeneration process of the integrated particle trap, the components for realizing oxidation type catalytic conversion and particle trapping are integrated in the shell; detecting N parameters x1,..., xN capable of affecting the regeneration process, where N is an integer equal to or greater than 2, and a temperature at a downstream outlet of the integrated particulate filter; using a predetermined temperature mapping relation T (x1,..., xN) to determine controlled safety limit temperature values corresponding to the detection values of the N parameters x1,..., xN; if the temperature detection value at the downstream of the integrated particle trap is equal to or less than the controlled safety limit temperature value, considering that the regeneration process of the integrated particle trap is in a safe state; otherwise, the regeneration process is adjusted to reduce the internal temperature of the integrated particulate filter. The invention further discloses an engine exhaust gas aftertreatment system.
Owner:ROBERT BOSCH GMBH
A silicon carbide particle trap and its preparation method
This invention provides a silicon carbide particle trap and its preparation method. The preparation method includes the following steps: (1) mixing silicon carbide raw materials, pore-forming agents, metallic silicon powder and high-temperature sintering aids to obtain a mixture; (2) mixing the mixture, binder and dispersant, molding and then sintering at high temperature to obtain the silicon carbide particle trap; wherein, the high-temperature sintering aid includes any one or a combination of at least two of boron carbide, boron nitride or yttrium zirconium powder. This invention optimizes the formulation composition, and the selected high-temperature sintering aid can, on the one hand, improve the phenomenon of product layering caused by the flow during the liquefaction of low-temperature sintering boride, significantly improving the refractoriness and strength of the product; on the other hand, it can optimize the compressive strength, thermal conductivity and coefficient of thermal expansion of the product, enabling it to better withstand high thermal shock during vehicle start-up and shutdown, and improving the overall performance of the particle trap.
Owner:JIANGSU GUANLAN NEW MATERIAL TECH CO LTD
A smoke elimination and cooling device for diesel generator sets
ActiveCN115559801BRealize the cleaning functionimprove continuityExhaust apparatusSilencing apparatusParticle trappingSolenoid valve
The present application relates to a smoke elimination and cooling device for a diesel generator set, comprising a tank body and an exhaust gas inlet pipe installed at the air inlet end of the tank body, and also comprising a spray mechanism installed on the outer wall of the tank body, with the spray port placed in the tank body; a diversion mechanism installed in the inner cavity of the tank body and connected to the exhaust gas inlet pipe; a filter press recovery mechanism installed at the tank body collecting port, for recovering liquid sprayed by the spray mechanism; a negative pressure lead pipe installed at the exhaust end of the tank body, the end of the negative pressure lead pipe away from the tank body being connected to a dispersion pipe; a particle capture mechanism distributed in parallel at the dispersion port of the dispersion pipe, and a hidden solenoid valve is provided at the junction; a back-blowing regeneration mechanism installed at the emptying end of the particle capture mechanism, facing the particle capture part of the particle capture mechanism. The present invention realizes the functions of cleaning the spray tank and recycling the spray liquid while spraying the exhaust gas of the diesel generator set.
Owner:江苏融汇环境工程有限公司
Particle trap filter element for diesel engine
The utility model relates to the technical field of particulate traps, and discloses a particulate trap filter element for a diesel engine, which comprises a mounting cylinder and a mounting cover I. The mounting cylinder comprises a mounting groove I and a mounting groove II, the mounting groove I is formed in the outer side of the interior of a mounting cylinder shell, and the mounting groove II is formed in the inner side of the interior of the mounting cylinder shell. The first mounting cover and the second mounting cover are detached from the two ends of the mounting cylinder through the external threads and the internal threads, the fixing column and the spiral blade can be directly taken out from the interior of the mounting cylinder, then the first ceramic filter cylinder and the second ceramic filter cylinder are poured out from the first mounting groove and the second mounting groove, the filter element can be detached, and the filter element is convenient to use. A fixed column and a first mounting cover are fixed through a supporting block, the rate of waste gas can be increased through a spiral blade, the waste gas can rapidly pass through a first ceramic filter cylinder and a second ceramic filter cylinder, rapid treatment of the waste gas is achieved, and the purification rate of the filter element is increased.
Owner:GUANGDONG GRVNES ENVIRONMENTAL PROTECTION TECH CO LTD
A control method and system for vehicle particulate filter regeneration
ActiveCN116838457BInternal combustion piston enginesExhaust apparatusParticle trappingInformation control
The application provides a kind of vehicle particle trap regeneration control method and system, by obtaining current particle information, and ECU application layer in flag information, and according to particle information, judge whether particle trap needs active regeneration, if yes, update the flag information in ECU application layer, control ECU will be sent to HCU after the flag information of update, and respond, generate response flag information and corresponding target parameter, then response flag information is fed back to ECU, simultaneously, ECU is called according to response flag information corresponding is target parameter, and generates control signal, control signal is used to control the active regeneration activity of particle trap, specifically, because the above-mentioned GPF regeneration control signal interaction method between ECU and HCU, can effectively solve the problem that GPF cannot be regenerated for a long time on hybrid vehicle due to hybrid strategy, and then appear the problem of blockage and failure phenomenon.
Owner:JIANGLING MOTORS
Device for preparing nano powder through flame spray pyrolysis
The utility model relates to the technical field of nano-particle liquid phase collecting devices, in particular to a device for preparing nano-powder through flame spray pyrolysis, which comprises a combustor, a flame combustion chamber, a precursor atomizer, a liquid phase collector and a suction mechanism. The precursor solution is subjected to high-temperature atomization and then is combusted through auxiliary flames to generate nano-particles and tail gas, the rear end of the flame combustion chamber is connected into a liquid phase collector, and the liquid phase collector is provided with a collecting liquid, a porous membrane substrate and a cooling device and used for filtering and collecting the nano-particles generated by combustion of the precursor solution; by means of a suction mechanism, tail gas containing nano-particles is subjected to micro-bubbling through a porous membrane matrix and then makes contact with collected liquid, then solid nano-particle flow is captured, and liquid-phase collection of nano-powder synthesized at the high temperature is achieved. According to the device, the problems of discontinuity, dissipation and low efficiency in the nano-particle trapping process are solved.
Owner:FUDAN UNIV YIWU RES INST +1