116 results about "Sediment particle" patented technology

The invention discloses a sediment particle analysis device based on digital image technology, which includes a collection box, an image acquisition unit, and a sediment particle analysis system; wherein the image collection unit is arranged in the collection box for collecting sediment samples. Image; the sediment particle analysis system includes an input module, an image preprocessing module, an image binarization module, an edge detection and contour extraction module, and a statistical output module. The invention also discloses a sediment particle analysis method based on digital image technology. The image of the sediment particle sample is collected by a camera, and then the image is preprocessed, binarized, and edge contour is extracted, and the projected area of ​​each particle is calculated. According to the equivalent projected area, the particle size of each particle is obtained, and then a series of particle information is obtained, which realizes the rapid measurement of the characteristic parameters of sediment particles.

A self-cleaning, back-washable filter apparatus and method for use with a pumping apparatus which is at least partially immersed in fluid. A sediment removal system is disclosed for removing sediment from around a filter apparatus. The sediment removal system comprises a plurality of venturi jets configured to force sediment particles through a discharge line and away from the inlet to a filter apparatus. A filtering system is configured to direct a flow of fluid generally parallel to the surface of the filter, which may be a cross-flow filter, to prevent clogging or fouling. A method for filtering a flow of fluid comprises directing a flow of fluid generally parallel to the surface of a filter to prevent clogging or fouling of the filter. A method for filtering a flow of fluid is also disclosed, comprising vibrating a filter by applying a flow of fluid to the filter.

The invention discloses a mechanical-thermal hydrate exploiting method. The mechanical-thermal hydrate exploiting method comprises the following steps: excavating a hydrate stratum, crushing hydrate sediment into hydrate sediment granules, and conveying the hydrate sediment granules into a decomposing chamber; stirring and mixing relatively hot seawater and the hydrate sediment granules in the decomposing chamber, partially decomposing the hydrate sediment granules, separating the obtained mixture, and removing the separated sediment; upwardly conveying the remaining mixture along an exploiting shaft, further decomposing the hydrate in the mixture in the conveying process, and separating the remaining mixture and generated gas from the sediment in the mixture; and collecting the obtained gas on an exploiting platform. By the method, hydrate decomposing heat can be supplied by a huge heat source from seawater and convective heat transfer; expansion energy of gas which is generated in a centralized way can be made full use; backfill of the sediment can restore certain stratum strength; and leakage of the hydrate decomposing gas from a covering layer can be avoided.

The invention relates to a detection device and especially relates to an in-situ detection device for occurrence of hydrates in deposits. The CT in-situ detection device for microcosmic occurrence of hydrates in deposits comprises a pressure control system, a semiconductor temperature control system, an autoclave and an X-CT scanning system. The pressure control system is communicated with the autoclave. The semiconductor temperature control system is arranged at the bottom of the autoclave. The X-CT scanning system is arranged at two sides of the autoclave. The device achieves real-time detection of distribution of deposit particles, water, hydrates and free gas during hydrate formation/decomposition process.

A method and system for computing and visualizing sedimentary attributes may include receiving, by a processor, paleo-geographic coordinates representing predicted approximate positions of particles of sediment deposited at a time period when a layer was originally formed. The processor may numerically compute or determine a sedimentation rate that varies laterally along the layer. The processor may determine a sedimentary attribute based on the lateral variation of the sedimentation rate along the layer with respect to the paleo-geographic coordinates. A monitor or display may display the sedimentary attribute of the layer in the present-day geological space.

The invention discloses a testing apparatus for a vertical osmotic coefficient of a streambed shallow-layer sediment. The apparatus comprises a thermal insulation sleeve, a metal bar and temperature sensors and pressure sensors positioned in the thermal insulation sleeve and the metal bar. Vertical temperature distribution of a sediment in the vertical sleeve and hydraulic pressure values of two ends of the sediment can be measured under the action of thermal pulse, and the vertical osmotic coefficient of a soil column can be calculated through a relation formula for the osmotic coefficient and spatial and temporal distribution of temperature. The invention further discloses a testing method for the vertical osmotic coefficient of the streambed shallow-layer sediment. According to the invention, the apparatus has a simple structure and high testing efficiency and poses small interference on a spatial structure of particles of a to-be-tested streambed sediment; and the testing method is a novel environment-friendly economic testing method for the vertical osmotic coefficient of a streambed sediment and has good application prospects.

The invention discloses a method for efficiently spraying, evaporating and coring desulfurization wastewater in a thermal power plant. The method comprises the following steps: introducing desulfurization wastewater into a wastewater flowing channel, mixing dust-containing fume with additives, subsequently introducing into an inner side air flue, introducing compressed air of high pressure and high flow velocity into an outer side air flue, after the desulfurization wastewater is sprayed, firstly, mixing with ejected dust-containing fume and the additives for chemical reaction subsequently, further crushing and atomizing the desulfurization wastewater by high-speed air ejected from the outer side flue, and further feeding into the flue for evaporating and coring. The method adopts an inner/outer side flue mode, the desulfurization wastewater is firstly subjected to chemical reaction with the mixture of the dust-containing fume and the additives to form sediment particles, furthermore the coring effect of the dust particles and the sediment particles in the fume is utilized to enhance atomization, evaporation and crystallization coring of wastewater, and finally liquid drops are crushed and atomized by the high-speed air. By adopting the method, the time that the wastewater drops are evaporated and cored in the tail gas flue of a boiler is shortened, the particles after the evaporation and crystallization coring are easy to capture in a dust collector, and thus zero emission of desulfurization wastewater is achieved.

A method is provided for filtering a fluid including contaminant and or sediment particles. The method includes the steps of: selecting a particle of a first size to be filtered; selecting a first mesh material having a pore size greater than the first size; and selecting a number of layers of the first mesh material for forming a filtration material having an absolute micron rating. The absolute micron rating has a value equal to or less than the first size. The method also includes the step of arranging the layers of first mesh material in a manner so as to form a stack of first mesh material. The method further includes the step of passing a fluid through the stack of first mesh material.

The invention discloses a 3D printed water-permeable pavement scale simulation device under the action of runoff. The device comprises a model box provided with an opening in the top, wherein a lower base course, an upper base course and a 3D printed water-permeable pavement are sequentially inside the model box from bottom to top, and the water-permeable pavement is transparent or translucent; and a section is obtained by scanning the concrete water-permeable pavement, and is reconstructed in a 3D printer to obtain the 3D printed water-permeable pavement, and a seepage port is formed in the bottom of the model box and is communicated with a collector. The interaction among rainwater runoff, sediment particles and the water-permeable pavement is studied comprehensively through a non-aqueous phase liquid migration law test and a non-aqueous liquid-wrapped sand transport law test to give the variation trend of movement speeds of the non-aqueous liquid and particles in a pore channel in each direction at different seepage flow velocities, and the experimental effect has good guiding significance.

The invention discloses a method using particle image velocimetry technology (PIV) to measure sediment two-phase flow field, and mainly used for inner flow velocity field measurement in a sediment two-phase flow fluid test; the method uses glass beads of high transparency to replace sediment particles of opacity or poor transparency; the glass beads mix with water or other liquid having similar refractive index with glass and excellent transparency so as to form a solid-fluid two-phase flow; the mixed solid-liquid two-phase flow is used for the fluid test, and the PIV technology is used for measuring the inner flow velocity field. The beneficial effects are that shooting image clearness of a PIV system can be improved in the sediment two-phase flow test, thus enhancing measuring precision, and realizing real time measurement of sediment two-phase flow inner flow velocity field with high concentration.

The invention provides an air-water combined flushing system and method for a high-sand-laden water direct drip irrigation capillary tube. According to the air-water combined flushing system, a water pipeline arranged between a water pump and a water distributing pipeline communicates with an air compressor through an air pipeline provided with a first valve; an air-water turbulent mixer parallelly communicates a water pipeline arranged between the air pipeline and the water distributing pipeline; a second valve and a third valve are mounted at two ends of the air-water turbulent mixer; and a fourth valve and a fifth valve are mounted on the water pipeline which parallelly communicates with the air-water turbulent mixer. The air-water combined flushing system provided by the invention combines water flushing and air flushing, thereby reducing the waste of water resources and ensuring a water flushing effect on the tail end of the drip irrigation capillary tube. High-pressure air and high-velocity water flow are subjected to turbulent mixing in the air-water turbulent mixer, so that condensed sediment particles which are deposited on the bottom of the drip irrigation capillary tube can be impacted and sufficiently mixed with air-water mixed flow.

The invention discloses a method and a device for measuring the heat conduction coefficient of a natural gas hydrate in a porous medium. The device provided by the invention comprises a pressure stabilizing gas-liquid supplying module, a temperature control module, a heat conduction coefficient measuring module and a data collecting module; the hydrate generation and the heat conduction coefficient determining are carried out in a high-pressure reaction kettle. The axis of the reaction kettle is provided with a resistance wire which can provide stable power so as to continuously heat up a porous medium containing the hydrate; three thermoelectric couples are distributed additionally on the cross section, in which the central point of the resistance wire is positioned, of a kettle body, and are used for analyzing the stable-station transmission characteristics of heat along the cross section in heating. According to the method and the device, a stable-station measurement technique is combined, and can be used for measuring the effective heat conduction coefficient of the porous medium containing the hydrate, comprehensively studying the saturability degrees of different hydrates, heat conduction coefficient models under different temperatures and pressures and different deposition particles, and provides a theory basis for practical exploiting of the natural gas hydrates.

The invention belongs to the technical field of hydropower station flood discharge, and discloses a three-dimensional numerical simulation method for a downstream scouring process of a flood dischargegate of a hydropower station when a hydropower station is stuck, which comprises the following steps: establishing a bed load sediment transport rate formula based on water flow randomness and bed sand distribution randomness based on riverbed sediment particle motion basic characteristics; based on the UDF macro function, conducting secondary development on Fluent software, extracting the bed surface node water flow shearing force, and calculating the bed surface sediment transport rate; and according to a riverbed scouring and silting balance principle, converting the change of the sedimenttransport rate between the nodes into the change of the node elevation along with time, so that the moving boundary grid nodes are controlled to move, and three-dimensional numerical simulation in the scouring process of the scouring pit is realized. According to model actual measurement data verification, a simulation result is basically matched with an actual measurement value; in the forming process of the scouring pit, the shear stress distribution of the bed surface is continuously changed along with the scouring deformation of the bed surface, namely the shear stress of the bottom wallsurface of the scouring pit at the initial scouring stage is larger, and the shear stress of the upstream slope wall surface in the scouring pit at the middle and later scouring stages is larger.

The invention discloses a fine sediment grading device and method. The fine sediment grading device sequentially comprises a sediment adding barrel (4), a sedimentation transition barrel (3), a sediment grading barrel (2) and a base (1) which are sleeved with one another from top to bottom, wherein the sediment grading barrel (2) is composed of an upper barrel (5) and a lower barrel (6); control valves are arranged in a position, close the top, of the upper barrel (5) and a position below the middle of the lower barrel (6); a rotary switch is arranged at the bottom of the sediment adding barrel (4); a rod body (9) is arranged on the rotary switch. According to the fine sediment grading method, sediment particles in a certain particle size range can be separated by opening and closing the control valves. The device is simple in structure, convenient to clean, suitable for batch processing of sand samples, high in grading precision and good in flexibility, can separate sediment particles with the fine particle range of 2-62 microns; the method is easy to operate and high in applicability. If the device is long enough, the device can be used for separating sediment particles with the particle size range of 62-2000 microns; the particle size of the separated sediment is the settling particle size, and conversion between two particle sizes is avoided.

The invention discloses a method for predicting distribution and ratio of sedimentary particles. The method comprises the following steps: analyzing the density of a rock sample according to research area sampling or core data, and analyzing granularity of the rock sample to obtain data, including density and particle size distribution, of sedimentary components; from the view of sedimentary dynamic characteristics of sedimentary sand bodies, carrying out sedimentology investigation, and determining structural geologic characteristics, including physiognomy, and sedimentary dynamic control factors of the sedimentary sand bodies in a research area; according to different carrying ways of the particles, dividing the sedimentary components into two types, and calculating volume of sediments according to simulation representations of the sedimentary components; repeating the steps until simulation is finished, so that quantitative representation on the research area is realized; extracting data of each component from a result map simulated by a computer, calculating thickness and percentage content of each component according to density data, drawing a thickness distribution diagram and a content distribution diagram of all the components, and thus finally realizing prediction of the distribution and ratio of the sedimentary particles. The method disclosed by the invention has the advantage of being better in line with the practical geological process.

The invention discloses a method for analyzing instantaneous sediment transportation intensity of pebble gravels through images. The method comprises the following steps: continuously acquiring moving sediment images within a preset time period; generating a measuring section for each image; extracting the measuring section at the same fixed position of each image, and reconstructing the extracted measuring sections into a diachronic graph according the sequence of the acquisition time; acquiring the border of each sediment particle in the diachronic graph, and determining the position of the sediment particle in the diachronic graph; counting the number of sediment particles; acquiring the number of total frames and the sampling frequency which are acquired within the preset time period, obtaining the acquisition time according to the number of total frames and the sampling frequency, and according to the acquisition time, the number of the counted sediment particles with the area larger than a preset value as well as positions of the sediment particles, generating a sediment transportation-time graph so as to generate a sediment transportation intensity-time relationship curve. The invention further discloses a system for analyzing the instantaneous sediment transportation intensity of the pebble gravels through the images as well as a method for measuring the instantaneous sediment transportation intensity of the pebble gravels through a river engineering model.

The invention relates to a method for treating activated sludge. The method includes the following steps of adding sediment particles into the activated sludge to be treated to form mixed sludge and subjecting the mixed sludge to a dehydration treatment. Compared with methods of treating the activated sludge in prior art, the method has the advantage that the dehydration efficiency of the activated sludge can be effectively improved.

The invention discloses a methanol gasoline multipurpose additive and application thereof. The methanol gasoline multipurpose additive comprises the components of isobutanol, isoamylol, acetone, dimethylbenzene, tertiary butanol, methyl tertiary butyl ether, cerium nitrate, 2, 4- dimethyl-6- tert-butyl phenol, 102 TB corrosion inhibitor and dcyclopentadiene iron. According to the invention, raw materials can be obtained easily, the processing is simple, the price is low, and the methanol gasoline multipurpose additive has good anti-detonating quality, vaporability and stability; the pollution is low after the combustion, so that the environmental protection is facilitated; the antioxidant component in the methanol gasoline multipurpose additive can prolong oxidation and dispersion time for sediment particles, so as to have an anti-aggregation raw rubber stabilizing effect on oil product olefins; the methanol gasoline multipurpose additive can prevent a filter and a nozzle from being polluted and blocked; and all components work together to improve the safety of methanol gasoline.

The invention discloses a sediment particle three-dimensional simulation motion monitoring experiment device which comprises a water tank for generating water flow, a stocker for storing a plurality of simulation sediment particles is arranged at the water tank, and after a discharge port of the stocker is opened, the simulation sediment particles are released into water. The simulated sediment particles are provided with sensor devices for acquiring three-axis direction stress and motion trail data of the simulated sediment particles, and the simulated sediment particles are also provided with wireless devices for sending data to a computer terminal. The tail end of the water tank is further provided with a measuring device for measuring the transport rate of the simulated sediment particles, and the measuring device is in signal connection with a computer terminal. The device can accurately simulate the entrainment and collision of sediment particles in water flow and analyze the motion trail process. Meanwhile, the simulated sediment particles are collected at the tail end of the water tank, the real-time sediment transport rate of the simulated sediment particles is measured, and new insights and understanding are provided for the water flow sediment carrying motion mechanism.

The invention discloses a solidifying device for blown sand type island construction. The device comprises a material bin, a main sea sand pumping pipeline, and a first conveying pipeline which is provided with a spiral conveying rod and is arranged between the material bin and the main sea sand pumping pipeline, wherein a first flow meter and a first reverse stop valve are sequentially arranged on the first conveying pipeline in the conveying direction. The device has the beneficial effects that the mixing in the pumping process can be carried out at the speed equal to the pumping speed, so that the mixing efficiency is extremely improved; and meanwhile, the limitation of terrian conditions of intertidal zones is avoided, so that the construction period can be effectively reduced; the sediment pumping flow rate, the water content and the particle size of sediment can be detected in real time, and the powder materials and the sediment-water separating agent feeding quantity can be timely adjusted, so that the construction quality is ensured; the sediment particles are subjected to surface modification through a surfactant, so that the water can be accelerated to be separated out; the sediment particles are gradually close to each other as the water is separated out, and the hydration reaction of hydraulic powder materials gradually start; and the particles gradually gain the intensity.