120 results about "Permeable channel" patented technology

A filtration apparatus for filtering liquid has a filtration cell having generally vertical front and rear panels spaced apart to define a cell length, and generally vertical side panels extending between the front and rear panels and spaced apart to define a cell width. A plurality of header segments are provided in the cell, each header segment having a permeate channel. A plurality of hollow fiber membranes are associated with each header segment and extend generally upright between the cell panels, each membrane having a lumen in flow communication with the permeate channel of the associated header segment and a lower end secured to the associated header segment and a loose upper end.

The invention relates to a method for extracting gas in low air permeability coal layer by pulse fracture anti-reflection, comprising the following steps: firstly using the blast-proof pulse-type coal layer high pressure water injector with adjustable frequency and pressure from the coal layer, high tunnel or low tunnel; using the pulse water effect generated by the periodical change of high pressure pulse water inside the drill hole of coal body, wherein the maximum pulse pressure is 35 MPa, the flow is about 300 L / min, and the pulse frequency is 0-1460 times / min; forcing the macroscopic fracture in the coal layer to be expanded and communicated; promoting the micro-pore fracture to be formed and extended; forming a new regeneration fracture net; providing a permeable channel of water inthe coal layer so as to achieve the effects of improving the mechanical property of the coal body, reducing the stress of the coal body in front of the working face and improving the discharge rate of the gas. Through the method, the pressure releasing range of the coal layer is enlarged, the whole pressure is adequately released, the radius of influence range of fracture can reach 10-40 m, and the air permeability of the coal body can be improved by 100-1000 times; and the method is simple, easy to operate and good in effect.

Separation device comprising a feed channel including a shear region, permeate passage(s) extending perpendicular to the direction of the feed flow and a porous medium positioned between the shear region of the feed channel and the permeate passage(s). Separation process comprising generating a shear layer in a feed fluid and passing permeate into the permeate passage(s).

A membrane has a permeate channel including a 3D spacer fabric having an upper and a lower fabric surface (2,3) spaced apart by monofilament thread (4) at a predefined distance, the permeate channel being interposed between two membrane layers (12, 13), wherein the membrane layers are linked at a multitude of points with the upper and lower fabric surfaces to form an integral structure with a high bonding strength suitable for backflush operations. A method provides an integrated permeate channel membrane, including the steps of:—Providing a 3D spacer fabric having an upper and lower surface fabric (2,3) spaced apart by monofilament thread (4) at a predefined distance; and—Applying a membrane layer to both the upper and the lower surface fabric.

An apparatus for filtering a liquid in a tank has a plurality of elements and a frame for holding the elements while they are immersed in the liquid. The elements have a plurality of hollow fibre membranes attached to and suspended between an upper header and a lower header. The membranes are in fluid communication with one or more permeate channels in one or more of the headers. Releasable attachments between the headers and the frame allow the frame to releasably hold the elements by their headers. The size and configuration of the frame determines the positions of the upper and lower headers of each element relative to each other. Connections between the permeate channels and one or more permeate collection tubes attached to the frame are releasable and resealable connections which are made or broken automatically by the movements involved in inserting or removing an element into or out of the frame.

The invention discloses an inner barrel structure of a washing machine and a washing machine with the inner barrel. The inner barrel is coaxially arranged in an outer barrel of the washing machine; cleaning particles for cleaning the walls of the barrels are arranged between the inner barrel and the outer barrel; a flange plate is arranged at the bottom part of the inner barrel; the flange plate and a hollow area at the bottom part of the inner barrel form a permeable channel; a baffle cover for preventing the cleaning particles from entering into the inner barrel via the permeable channel is arranged between the bottom part of the inner barrel and the flange plate; a permeable hole is formed on the baffle cover corresponding to the permeable channel; the baffle cover is a hollow annular cover body; and a protruding main body at the centre of the flange plate correspondingly blocks a hollow position of the baffle cover, and the permeable hole is distributed at the position of the annular cover body corresponding to the permeable channel. According to the invention, the structure of the baffle cover is simple; the installation cost is low; the cleaning particles between the inner barrel and the outer barrel can be prevented from entering into the inner barrel, and the problem that the cleaning particles enter into the inner barrel to affect the barrel wall cleaning effect is avoided.

The invention discloses a cofferdam lead hole slotting and grouting construction method for a deepwater hard rock steel plate pile. The cofferdam lead hole slotting and grouting construction method comprises the following steps of: 1) mounting a lead hole protective barrel guide frame; 2) separating and dropping a lead hole protective barrel according to the guide frame; 3) separating the lead hole and deslagging through a rotary excavating drilling rig and a barrel-shaped drill bit, and forming a notch in a mode of stacking circular holes; 4) pulling out a lead hole steel protective barrel, and dumping and filling soil in a lead hole slot; 5) splicing and dropping inner support for construction; 6) welding a grouting tube at the inner side of a bottom slot hole of the steel plate pile, and infiltrating the bottom of the steel plate pile to a slotting area; and 7) after a cofferdam is formed, pouring cement paste into a grouting tube for sealing a water permeable channel on the bottomof the cofferdam. The problem that stability of the steel plate pile is finally affected as a steel plate pile in hard rock cannot be infiltrated and the cofferdam is insufficient in integral embedding-fastening depth is solved by rotary excavating and lead hole slotting. The bottom water seepage problem of the cofferdam is solved by pile-bottom grouting, so that back-cover-free construction is possible.

A sealing element is suggested, in particular one for closing primary packaging for medications, that has at least two parts, which touch each other at least in some areas. This is characterized in that steam-permeable channels are provided for sterilization of the contact surfaces. In addition, a method is suggested for manufacturing a syringe system with a sealing element. This is characterized by the steps—preliminary assembly of the sealing element, —sterilization of the sealing element, —final assembly of the sealing element.

An access-integrated RFID-based asset management (AIRBAM) system is used to acquire and update field data on physical assets located beneath or behind RF-permeable access structures, such as underground valves located beneath plastic valve covers or boxes. Inspection / maintenance personnel using hand-held RFID readers acquire field data from RFID tags located in the access structures prior to physically accessing the assets and write updated field data to the RFID tags after completing the inspection and / or maintenance. Alternately, field data regarding the assets can be stored in a database residing on the mobile RFID readers and can be retrieved and updated based on alpha-numeric identifiers transmitted by the RFID tags.

The invention discloses a chemical oil displacing method for an oil reservoir after the polymer oil displacement, which belongs to the technical field of the oil field oil displacement. The chemical oil displacing method comprises the following steps: injecting a first substance into a target oil reservoir, and sealing an advantageous permeable channel of the target oil reservoir; injecting a second substance into the target oil reservoir to pre-adsorb the target oil reservoir; injecting a third substance into the target oil reservoir to adjust an adsorption profile of different permeable layers of the target oil reservoir, enlarge an involved volume and improve the oil displacing efficiency; and injecting a fourth substance into the target oil reservoir to prevent the third substance frombeing diluted. According to embodiments of the invention, the first substance, the second substance, the third substance and the fourth substance are successively injected into the oil reservoir at different phases, so that the substances injected at different phases can be cooperated with one another to have a synergistic effect, an oil displacing mechanism combining the blocking, controlling and displacing of the oil reservoir after the polymer displacement can be formed, and by adopting the embodiments of the invention, the recovery ratio of the oil reservoir after the polymer displacementcan be effectively improved.

An improved apparatus and method for gravel packing is provided. The apparatus includes a substantially tubular-shaped base pipe having a plurality of apertures disposed along part of its length and a dual-wall sand screen coaxially secured to the base pipe. The dual-wall screen is substantially permeable to fluids and impermeable to sand. The apparatus provides a plurality of fluid permeable channels formed within the sand screen, which are disposed along the entire length of the screen. Each channel has an associated plurality of ports spaced along discrete intervals of the screen, which communicate with an annulus formed between the apparatus and the wellbore. The method provides for injecting a sand and fluid slurry mixture through the screen and out of the ports. This design reduces the incidence of sand bridge formation, and packs gravel around any sand bridges, which may be formed.

The present invention relates to a single module, flow-electrode apparatus for continuous water desalination, ion separation and selective ion removal and concentration by capacitive deionization, comprising: a first current collector (1), a first compartment (1′) for a flow electrode, a first ion exchange membrane (AEM, CEM), a first liquid-permeable channel (6a) next to the first ion exchange membrane (AEM, CEM), a second ion exchange membrane (CEM, AEM) with a fixed charge opposite to that of the first ion exchange membrane (AEM, CEM) next to the first liquid-permeable channel (6a), a second liquid-permeable channel (6b) next to the second ion exchange membrane (CEM, AEM), a third ion exchange membrane (AEM, CEM) having the same fixed charge as the first ion exchange membrane (AEM, CEM) next to the second liquid-permeable channel (6b), a second compartment (2′) for a flow electrode, and a second current collector (2), wherein a fluid (4) containing suspended conductive particles or a mixture of conductive and non-conductive particles or particles made of a mixture of conductive and non-conductive materials (5) is provided in the first and second compartments (1′, 2′), acting as the flow electrode, as well as a corresponding method.

The invention belongs to the technical field of noise measurement, and relates to a microphone phase array calibration device for calibrating a microphone phase array for noise source positioning measurement. The device comprises a calibration panel (1), a speaker mounting base (2), a speaker (3), a reference microphone (4), a sound-permeable channel (5) and a sound-permeable aperture (6). The invention provides a microphone phase array calibration device, which improves the positioning effect and the positioning accuracy of the noise source.

The invention belongs to the technical field of permeable paving, and particularly discloses a permeable paving system and a paving method for removing oil stain in runoff rainwater. The permeable paving system structurally comprises a permeable layer, a leveling layer, a microorganism layer, a permeable geotextile layer and a permeable base layer from top to bottom. The permeable layer is used for quickly permeating the rainwater and primarily filtering the rainwater; the leveling layer is used for cushioning and permeating water; the microorganism layer is used for adsorbing and removing the oil stain in runoff, so that permeable channels can be prevented from being blocked by the oil stain, or the oil stain can be prevented from being permeated into underground water; the permeable geotextile layer is used for permeating the permeated water of the system and preventing loss of microorganisms; the permeable base layer is used for isolating natural soil from the permeable paving system and preventing the natural soil from being spread in the microorganism layer. The paving method includes excavating roadbeds; sequentially laying the permeable base layer, the permeable geotextile layer, the microorganism layer, the leveling layer and the permeable layer. The permeable paving system and the paving method have the advantages that the microorganisms can be regularly added into the permeable paving system, so that the content of the microorganisms can be guaranteed; the oil stain in the runoff rainwater can be effectively removed, the permeable paving system and the paving method are low-carbon, green and environmentally friendly and are wide in applicability, and energy can be saved.

The invention provides a drainage consolidation method for a soft foundation. The drainage consolidation method for the soft foundation is characterized by comprising the following steps that firstly,a drainage consolidation area is divided into a plurality of sub-areas; secondly, on the boundaries of the sub-areas, vertical geomembrane impermeable layers perpendicular to the ground are constructed; thirdly, a plurality of first sand layers and second sand layers are constructed in bottom soft soil, and in this way, permeable channels intersecting longitudinally and transversely on a horizontal plane are formed; fourthly, a plurality of sand wells or drain boards are at least constructed on the first sand layers and the second sand layers located on the inner layer, and a vertical water draining structure with the bottom embedded in the permeable channels is formed; and fifthly, a plurality of water collecting wells are constructed at least on the first sand layers and the second sandlayers located on the outer layer, the adjacent water collecting wells in the length direction are located on the two adjacent second sand layers separately, the multiple first sand layers are arranged between the adjacent water collecting wells in the width direction at intervals, the bottoms of the water collecting wells are embedded into the permeable channels, then water in the water collecting wells is drained out, water draining of the sub-areas is completed, and solidification of soil is accelerated.

The invention relates to a display product having a frameless visual effect. The display product comprises a display product main body, and is characterized in that a curved transparent front frame is arranged between the back shell plate of the display product and the edge part of a display screen; a tubular cavity which is used for placing an LED (light-emitted diode) lamp is arranged on the inner edge of the curved transparent front frame; the inner cavities of the tubular cavity and the curved transparent front frame are provided with light-permeable channels; the curved transparent front frame is made of two transparent material sheets; and the surfaces of the inner cavities of the two transparent material sheets are respectively coated with reflector materials, thereby conducting the light of the LED lamp from the inner cavity of the curved transparent front frame to the edge of the display screen. According to the display product provided by the invention, the visual effect of the frame is expanded under the action of the total reflection effect of the arc-shaped side of the front frame, the frameless display effect is really achieved and the competitiveness of the product is increased.

The invention discloses a preparation method of synthetic leather. The preparation method of the synthetic leather comprises the following steps: firstly, impregnating a cloth base with a first polyurethane composition added with a pore-foaming agent; and followed by eluting the pore-foaming agent agglomerated on the cloth base with an eluent, and thus forming gaps in the cloth base agglomerated with a polyurethane layer, wherein the pore-foaming agent is dissolved in the first polyurethane composition and also dissolved in a high-molecular polymer of the eluent. In the preparation method of the synthetic leather, the pore-foaming agent is added in the first polyurethane composition impregnating the cloth base, at a later stage, the pore-foaming agent agglomerated on the cloth base is eluted, therefore, the gaps are formed in the cloth base after the pore-foaming agent is eluted, the gaps form a moisture permeable channel, and the high moisture permeability effect can be improved; and moreover, the eluting of the pore-foaming agent belongs to micro-particles, the cloth base and an overall connection face of polyurethane attached to the cloth base surface are not affected, and mechanical properties of the synthetic leather cannot be reduced.

An air-conditioning system for a seat includes a cushion having a cover and two air-conditioned zones proximate a surface facing a seat occupant, and an elongated depression between the zones, the depression having a floor which is recessed with respect to the zones and into which the cover is at least partially drawn into in the direction of the depression floor, the air-conditioned zones being at least partially distanced from the depression. The zones and the depression are connected by a plurality of air-permeable channels, the channels being located between the air-conditioned zones essentially on or above the depression floor. The depression, in the transverse direction, is at least partially air-permeable, despite the cover.

The invention discloses a cofferdam construction method for a deepwater hard rock back-cover-free steel plate pile. The cofferdam construction method comprises the following steps of: 1) during bearing platform drilling pile construction, synchronously constructing cofferdam construction stable piles which are positioned at the four corners of a cofferdam and on the middle part of the long side ofthe cofferdam; 2) performing lead hole slotting operation after construction for drilling the stable piles and a bearing platform pile foundation is completed; 3) dismounting a drilling platform, andmounting a Z-shaped bottom-support bracket of inner support; 4) utilizing a crane for stacking and dropping inner support to designed elevation in a layered mode; 5) welding a grouting tube at the inner side of a bottom slot hole of the steel plate pile, and infiltrating the bottom of the steel plate pile to a slotting area; 6) after the cofferdam is formed, pouring cement paste into a grouting tube for sealing a water permeable channel on the bottom of the cofferdam; 7) adopting large-power water pumping equipment to forcibly pump water and stop leakage; 8) converting inner support dead loadto the side wall of the cofferdam from the Z-shaped bottom-support bracket in a water pumping process, and connecting cofferdam edges to the stable piles; and 9) after water pumping is ended, dismounting the Z-shaped bottom-support bracket, starting excavation operation and the like. The cofferdam construction method can be applied to replace most of a double-wall steel cofferdam construction scheme, so that temporary cofferdam engineering amount is greatly saved, and application range of the steel plate pile cofferdam technology is greatly expanded.

A hydraulic valve for a cam phaser including a valve housing with a longitudinal axis and a valve piston that is axially moveable along the longitudinal axis, wherein the valve piston opens and closes a first operating connection of the valve housing and a second operating connection of the valve housing, wherein the first operating connection and the second operating connection are axially offset from one another; and a supply connection of the valve housing which is used for supplying the hydraulic valve with a hydraulic fluid fed by a feed device, wherein the hydraulic valve is configured to be flowed through by the hydraulic fluid on different paths controlled by a flow permeable channel system of the valve piston, and wherein a check valve opening and closing an inflow channel is arranged in the hydraulic valve in the inflow channel of the valve housing.

A method for simulating a dam break process caused by seepage failure of a tailing pond dam body comprises the steps that firstly, two-dimensional seepage stability analysis is conducted on a tailingdam according to dam body material mechanics parameters, upstream and downstream water levels and other information, and the position of a seepage channel is preliminarily planned; constructing a tailing dam seepage failure breach development numerical model, simulating a seepage failure breach development process and determining a critical condition of seepage channel collapse; and finally, simulating the overtopping outburst process after collapse of the permeation channel by utilizing fluid mechanics analysis software, so as to realize dynamic simulation of the permeation failure process ofthe whole tailing pond dam body. The method has the advantages of being high in pertinence, low in cost, easy to operate, good in result visualization and the like; by means of the method, the specific situation of dam break downstream disaster caused by seepage failure of the tailing pond dam body can be obtained, a basis is provided for government decision departments and related design units to scientifically and reasonably formulate tailing pond burst emergency plans and rescue and remedial measures, and therefore losses caused by tailing pond burst are reduced, and accident risks are reduced.

The invention discloses a method for detecting dam leakage through combination of a tracing method and a dilution concentration method. The method comprises the following steps of: firstly, determining the layout positions of drill holes according to a field investigation condition, analyzing and determining the connectivity between each drill hole and a reservoir water level through water level change correlation, and preliminarily determining a permeation channel between the drill holes through a tracing test; and further measuring the flow rates corresponding to different elevation points in each drill hole by adopting a single-hole dilution underground water flow rate method, drawing a flow rate-elevation curve, finally selecting two drill holes with permeation channels determined by a tracing test, comparing the flow rate-elevation curves of the two drill holes, and finally obtaining the specific leakage part of the dam and the leakage strength of the dam. The tracing method and the single-hole dilution underground water flow velocity method are combined, the same tracing agent is used for testing, the number of drilled holes and the testing cost are greatly reduced, and meanwhile the seepage detection efficiency and precision are improved.

The invention discloses a filtering layer back washing method for percolating water abstraction and a control system. The filtering layer back washing method for percolating water abstraction is characterized in that a back washing medium is used for acting on a silted area of the filtering layer through a high frequency oscillation method, a mid-frequency oscillation method, a low frequency oscillation method and an impulse oscillation method; the back washing medium is caused to do reciprocating movement or impulse-type oscillation movement, so that the border of the silted area starts to loosen; and energy release points are generated all over the whole area, blockage is separated from an attachment and is flushed away by the back washing medium, so that a permeable channel is recovered on the whole filtering layer. The filtering layer back washing control system for percolating water abstraction comprises a central controller, an air-water work station, a sensing control device and a connecting part; and the filtering layer back washing control system for percolating water abstraction adopts remote sensing and remote control, automatically identifies and judges various parameters, automatically gives back washing parameters, and monitors parameter changes during the back washing process and adjusts parameters in real time, so that high automization and intelligentization are realized. The method and the control system are applicable to a natural filtering layer and an artificial filtering layer.

The invention relates to a technological method for extruding and manufacturing a lead ring of a storage battery, and the method is characterized in that the specific process is as follows: a lower mould is heated to be above 50 DEG C; 1) lead is melted; 2) an upper mould and the lower mould are closed and sealed by pressure; 3) lead liquid is poured into the mould through the feeding port of the upper mold by gravity; at the moment, the cooling temperature of the upper mold is below 300 DEG C; 4) the lead liquid is solidified for at least 5 seconds; 5) the mandril of the lower mould moves upwards and extrudes redundant lead from the feeding port; and 6) the molded lead ring is de-molded. The technological method has the following advantages: as an added lower oil cylinder moves downwards, the oil cylinder extrudes the lead liquid in the process solidification, the produced product has increased inner density and decreased porosity which is less than 1 percent, the product molding property is good and the surface is smooth; as the porosity is low, a permeable channel for acid in the storage battery does not exist, thus reducing bad contact between wire and the lead ring caused by acid permeability effectively and prolonging the service life of the storage battery effectively.