33 results about "Particle trapping" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

The application discloses a tail gas aftertreatment device, which comprises a selective catalytic oxidizer, a particle trap, a mixer and a selective catalytic reducer arranged in sequence along an axial direction, wherein the mixer comprises a mixing cylinder and a flow guide plate, and an inside of the mixing cylinder is formed with a mixing cavity; a rear air inlet part of the mixing cylinder is inwardly recessed, two sides of the rear air inlet part are symmetrical arc-shaped cylinder walls, the rear air inlet part is provided with a rear air inlet hole, and the two arc-shaped cylinder walls are respectively provided with a left air inlet hole and a right air inlet hole; the flow guide plate is arc-shaped and located at a rear side of the rear air inlet hole, and an arc-shaped channel is formed between the flow guide plate and the mixing cylinder and leads to the left air inlet hole, the right air inlet hole and the rear air inlet hole from a front side. The device can make the reducing agent and the exhaust gas fully mix, evaporate and decompose, and improve the mixing uniformity and the anti-crystallization performance.

The invention relates to the technical field of particulate trapping, and particularly discloses a particulate trap and a preparation method thereof, a storage medium and a vehicle. The preparation method of the particulate trap comprises the steps that preset slurry is prepared, and the particulate trap is soaked in the preset slurry; after the adsorption is saturated, taking out the particulate filter, blowing to enable the loading capacity of the slurry in the particulate filter to be a first set target, and drying the particulate filter; preparing a gel powder solution, dipping the dried particle trap in the gel powder solution, taking out the particle trap after adsorption saturation, and placing the particle trap in a preset temperature environment for a preset time; and finally, preparing mixed sol, dipping the treated particle trap in the mixed sol until the loading capacity of the mixed sol reaches a second set target in the particle trap, and drying the particle trap to complete the preparation of the particle trap, so that the PN trapping rate of the particle trap can be improved, and the particle trap can be used for preparing the particle trap. And meanwhile, the rising amount of back pressure is reduced.

The invention discloses a particle trap active regeneration system and a control method and related equipment thereof, and the particle trap active regeneration system comprises a particle trap which is arranged at a vehicle chassis and is used for capturing and recycling waste gas exhausted by an engine of a vehicle; the catalyst is arranged between an exhaust port of the engine and the particle trap and used for catalyzing waste gas exhausted by the engine of the vehicle and preserving heat of the waste gas; the heating device is arranged at the gas inlet of the particle trap and is used for heating the waste gas entering the particle trap; the temperature sensor is arranged at the exhaust port of the particulate filter and is used for detecting the exhaust temperature of the exhaust port of the particulate filter; and the controller is connected with the temperature sensor and the heating device and used for controlling the heating device based on the vehicle working condition information of the vehicle and the exhaust gas temperature so as to heat the exhaust gas entering the particle trap.

The invention relates to a particle catcher for a gas-insulated metal-enclosed power transmission line, which belongs to the technical field of power transmission and distribution, and comprises a particle catching ring with high elongation, the particle catching ring is fixedly sleeved outside three support legs and is provided with a plurality of particle holes, the side surface of the particle catching ring in contact with the three support legs is a contact surface, and the contact surface is provided with a plurality of particle holes. The contact surface is in close contact with the three supporting legs, and the side face, corresponding to the space between every two insulators, of the particle capturing ring is an outwards-protruding arc face. According to the invention, the particle capturing ring is fixedly sleeved outside the three supporting legs, so that the particle capturing ring can be firmly fixed outside the three supporting legs of the insulator; then, the side face, corresponding to the position between every two insulators, of the particle capturing ring is designed to be an outwards-protruding arc face, the capturing area of the particle capturing device can be increased, under the impact of external airflow and particles, the elongation of materials of the particle capturing device is effectively utilized, targeted and controllable overall swinging or local elastic deformation is conducted, the particles are captured more actively and more efficiently, and the particle capturing efficiency is improved. The particle capturing efficiency is improved.

This application provides a method and system for estimating ash content in a particulate filter, a readable storage medium, and an engine. The method includes: acquiring the engine's operating mileage and operating time, and initiating particulate filter ash content detection based on these data; continuously identifying the particulate filter's regeneration interval based on carbon load, and triggering deep regeneration of the particulate filter based on the number of times the regeneration interval is less than a preset interval; acquiring the particulate filter's differential pressure value after deep regeneration, and calculating the flow resistance value based on the differential pressure value; and issuing a cleaning prompt based on the flow resistance value. Through this technical solution, the need for cleaning is determined based on the flow resistance value after deep regeneration of the particulate filter. After deep regeneration, the carbon load is thoroughly removed, eliminating the influence of carbon load on ash content estimation.

This invention relates to the field of power transmission and distribution equipment manufacturing technology, and particularly to the structure and manufacturing method of a particle capture device for GIL three-post insulators. The device includes a metal enclosed housing, a three-post insulator, a particle capture device, a grid mesh, and concave-convex riveting holes formed by a rivetless SPR self-piercing riveting process. The particle capture device is a thin-walled cylindrical structure installed on the outer circumference of the three-post insulator, contacting the inner wall of the coaxially arranged metal enclosed housing to form an equipotential grounding connection. The outer surface of the particle capture device has grid mesh evenly distributed along the axial direction, with rounded edges. The mesh evenly distributed along the axial direction extends to the bottom of the particle capture device and connects with a low-voltage equipotential region. During operation, the grid mesh of the particle capture device captures charged particles under the action of an electric field, ultimately improving particle capture efficiency.

The utility model relates to waste gas treatment technical field discloses an oil dirt particle trapping device of oxidizing cracking waste gas equipment, including the bottom plate, the top of bottom plate fixedly connected with the support station, the top front side of support station is fixedly connected with the cylindrical barrel, the top of cylindrical barrel is fixedly connected with the flusher, the top rear side of cylindrical barrel is connected with the gas pipe, the rear end of gas pipe is connected with the purification cylinder, the bottom of purification cylinder and the top rear side right end of support station are fixedly connected, the inboard of cylindrical barrel is fixedly connected with high precision filter screen, the bottom of cylindrical barrel is connected with the cyclone drum. In the utility model, waste gas forms spiral downward rotating airflow along with the flow guide plate, realizes preliminary purification in the rotating process, airflow is discharged to the purification cylinder from the gas pipe, can backflush high precision filter screen to prevent oil dirt impurities from accumulating on the surface of high precision filter screen, ensures that the pore is not blocked, guarantees the gas quality after purification.

The invention relates to the technical field of automobile exhaust trapping, in particular to an automobile exhaust ultrasonic atomization tackifying particle trapping method and device. According to the change trend of the working intensity of the automobile, the working condition volatility of the automobile and the current working intensity of the automobile, the working prediction intensity of the automobile at the next moment is obtained, and the tail gas particulate matter state prediction characteristics at the next moment are obtained; and obtaining a prediction coefficient according to the state characteristic difference of the tail gas particulate matters, the current residual water quantity of the water storage tank and the feedback result of the tackifying effect of the particulate matters, and obtaining the predicted operation power of the ultrasonic water mist generation device at the next moment. The running power of the ultrasonic water mist generating device is adjusted in real time according to the current actual condition of the automobile, the requirements of the automobile under different current conditions can be met, and the particle trapping efficiency is improved.

A method for implementing a system (20) for trapping brake particles from a disc brake, the trapping system comprising particle suction means (22, 24, 26) controlled by a control unit (30), the method comprising: monitoring a rotational speed of a disc (4); and activating a non-zero suction level when the rotational speed (W) of the disk is substantially constant and non-zero. The invention also relates to a trapping system configured in this way and a corresponding vehicle.

The invention discloses a vehicle control method, and relates to the technical field of vehicles. The method comprises the steps that the vehicle comprises at least two particle traps, the working states of the particle traps are obtained in real time and synchronously judged, state transition is triggered in a unified mode according to preset conditions, and it can be ensured that all the particle traps enter the same working state at the same time; therefore, the phenomenon of single-side regeneration caused by inconsistent parameter values of the corresponding electronic control units of the particle trap can be fundamentally eliminated, the problem of unbalanced power output caused by the difference of air-fuel ratio strategies on the two sides is avoided, and the acceleration smoothness and the driving stability of a vehicle are effectively guaranteed; meanwhile, the fuel control strategy conflict between the regeneration side and the non-regeneration side is prevented, sufficient combustion of the fuel is ensured, the fuel economy is improved, emission of harmful substances generated by incomplete combustion is restrained from the source, and unification of clean emission and efficient energy consumption is achieved.

The application discloses an ion trap device, which comprises upper and lower PCB plates arranged in parallel, wherein the middle area of the upper PCB plate is hollowed out to form a long and narrow first area, the two sides of the first area are respectively an upper direct-current electrode plate and an upper alternating-current electrode plate, and the upper direct-current electrode plate is divided to form a plurality of direct-current electrode plates arranged at intervals; the middle area of the lower PCB plate is hollowed out to form a long and narrow second area, the two sides of the second area are respectively a lower direct-current electrode plate and a lower alternating-current electrode plate, wherein the lower direct-current electrode plate is divided to form a plurality of direct-current electrode plates arranged at intervals; the first area and the second area are communicated to form a particle trapping area of the ion trap device; end electrodes are arranged at the two ends of the particle trapping area of the ion trap device, and the end electrodes are parallel to the upper and lower PCB plates. The ion trap device realizes the control of the movement of a single particle.

A waste sorting device for sorting plastic waste particles, such as plastic sheets, in a particle stream on the basis of characteristics of the waste particles, the waste sorting device comprising:-a sensor for determining the characteristics of the waste particles in the particle stream; -a particle injector downstream of the sensor with respect to the flow of particles for injecting waste particles from the flow of particles based on the determined characteristic; and-a vibratory feeder upstream of the sensor configured to provide vibratory energy to the flow of particles to feed the flow of particles to the sensor via a particle guide, where the particle guide is disposed between the vibratory feeder and the particle injector, characterized in that the vibratory feeder is configured to provide vibratory energy to the flow of particles to feed the flow of particles to the sensor via the particle guide. The waste sorting device further comprises a particle trap arranged for trapping particles bouncing from the particle guide and passing through a trapping region, where the trapping region is separated from the particle guide by a trapping distance in a direction perpendicular to the particle flow, wherein the particulate trap is disposed upstream of the sensor.

The utility model provides a particle trap regeneration system and a vehicle, which comprise a tail gas emission line and a regeneration line connected in parallel with the tail gas emission line, and also comprise a controller in communication connection with the tail gas emission line and the regeneration line, and a battery pack in conductive connection with the regeneration line, in the regeneration process, independent operation can be achieved without starting the engine, so that the problem of extra fuel consumption caused by dependence on the exhaust temperature of the engine in a traditional regeneration mode is solved, and the technical bottleneck that the regeneration efficiency is low under the working condition of idling or low speed of the engine can be effectively prevented.

The application provides a control method and device of a particle trap and a control system of the particle trap, and the method comprises the following steps: acquiring a current active regeneration stage and a first ash load; acquiring an ash load when the current active regeneration stage is a cooling stage, obtaining a second ash load, and determining a target ash load as a larger one of the first ash load and the second ash load; acquiring a plurality of target ash loads; acquiring a current carbon load, and determining whether a first control instruction needs to be generated according to the current carbon load and all the target ash loads. First, the ash is cleaned, and then the service regeneration is performed, so that incomplete carbon elimination caused by excessively high ash load is avoided, and thus the problem that, in the prior art, due to poor air inlet filtration efficiency, the ash load in a vehicle environment will also be captured in the particle trap after air enters the cylinder body, and the ash load will have an adverse effect on carbon load calculation of the particle trap, and then the regeneration process is affected.

The present application relates to the field of sewage treatment, and particularly relates to a high-efficiency air flotation device based on low-carbon intelligent control technology. The high-efficiency air flotation device comprises an air flotation treatment module, a particle trapping module, a non-disturbance mud scraping module, a sludge production defoaming module, a real-time feedback module and an intelligent control module. The present application can solve the inherent problems of high energy consumption caused by the inability of the existing air flotation technology to accurately control the dosing amount and the backflow amount, as well as some defects existing in the actual operation process. By reducing energy consumption, the present application breaks the great obstacle to the popularization and application of air flotation technology under the double-carbon background. The present application can automatically switch the operating conditions according to real-time water quality data without manual intervention, and has the advantages of intelligence, low carbon, energy saving and high efficiency. Meanwhile, the present application provides multiple control modes and has the functions of self-adaptation and self-learning.

The invention discloses a vehicle braking particle capturing and processing device and a control method thereof, and the device comprises an insulating shell and a control box which are installed on a vehicle frame, a particle capturing mechanism arranged in the insulating shell, a processing mechanism arranged on the particle capturing mechanism, and a first controller arranged in the control box. A pressure sensor is installed on a back plate, connected with the brake caliper, of the brake pad, the particle trapping mechanisms are arranged on the two sides of the brake disc correspondingly, and the first controller is in signal connection with the particle trapping mechanisms, the processing mechanism and the pressure sensor. The particle trapping mechanism and the processing mechanism which are intelligently controlled by the first controller are integrated, and the braking strength is monitored in real time by using the pressure sensor, so that source trapping and on-site processing of braking particles are realized, and the trapping efficiency and the automation degree of the system are improved.

The application discloses a kind of test device and installation method of buried pipeline stability in unsaturated soil, solve the problems in the prior art, with beneficial effect, specific scheme is as follows: a kind of test device of buried pipeline stability in unsaturated soil, including support, support support counterforce beam;Visual model box is supported by support, water inlet and outlet pipe is led into visual model box, water inlet and outlet pipe has water seepage hole, water seepage hole outside is covered with water seepage layer, visual model box is filled with soil body in the side of water seepage layer, and pipeline is buried in soil body;Matrix suction control unit, matrix suction control unit includes the first water tank and second water tank, the height of first water tank is higher than pipeline and second water tank, and matrix suction measuring piece is connected with first water tank to obtain soil body suction;Loading unit, loading unit includes radial loading component and axial loading component respectively connected with pipeline;Data acquisition unit, data acquisition unit includes particle trapping component.

The invention relates to a brake particle capture system (20) for capturing particles discharged by a disc brake (2), the capture system (20) comprising: particle suction means (22, 24, 26) capable of assuming a first state in which the suction means (22, 24, 26) produce a first suction level and a second state in which the suction means produce a second suction level higher than the first suction level; and a control unit (30) adjusting the state of the suction means (22, 24, 26), the control unit (30) being configured to switch the suction means (22, 24, 26) from the first state to the second state when a signal received by the control unit (30) representing the rotational speed of the disc (4) of the brake (2) indicates that the disc (4) in the acceleration phase has exceeded a threshold rotational speed.