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Multi-element synergic plugging agent and application thereof
ActiveCN104232039AReduce penetrationLimit penetrationDrilling compositionStrong bindingUltimate tensile strength
The invention provides a multi-element synergic plugging agent and application thereof. The multi-element synergic plugging agent comprises the component 1 or the component 2, wherein the component 1 comprises the following components in parts by weight: 40-50 parts of rigid particles, 15-20 parts of a flexible material, 15-20 parts of an ultrafine filling material, and 15-20 parts of an expansive type polymer: the component 2 comprises the following components in parts by weight: 50-70 parts of rigid particles, 10-25 parts of a flexible material, 10-25 parts of an ultrafine filling material, and 10-30 parts of an expansive type polymer. The multi-element synergic plugging agent disclosed by the invention combines the rigid material with the flexible material, incorporates the elastoplasticity, fully utilizes the synergistic function of the materials, can effectively plug the cracks with different widths, has the performances of high bearing strength, high temperature resistance, deformability and strong binding powder of the cracked stratum, and can be applied to the leaking stoppage operation for the drilling engineering to solve the leakage problem at different degrees.
Owner:PETROCHINA CO LTD
Modified self-insulating composite external wall material
InactiveCN102040361ANo damageMissing edges and cornersSolid waste managementCeramicwarePolyvinyl chlorideShock resistance
The invention discloses a modified self-insulating composite external wall material, and belongs to a gypsum building material. The material comprises the following components in percentage by weight: 75 to 84 percent of gel material, 0.2 to 1.5 percent of heat insulating material, 3 to 6 percent of modifying agent and 12 to 18 percent of water; the gel material consists of gypsum, fly ash, cement and lime, wherein the gypsum and the fly ash are in the majority; the heat insulating material is one or more of polyphenyl granules, rice hulls, straws, saw dust and expanded perlite; and the modifying agent is a common salt compound or a mixture of the common salt compound, aluminum powder and polyvinyl chloride (PVC) latex powder. The external wall material for manufacturing external wall building blocks or external wallboards by optimized proportion and modification treatment remarkably improves the comprehensive performance of water prevention, heat insulation, shock resistance and pressure resistance; and production and construction are convenient, the raw materials are easily obtained, industrial and agricultural byproducts are fully utilized, and environmentally-friendly and energy-saving requirements are met.
Owner:李宁 +1
Process for preparing porous ceramic materials
The invention relates to a method of preparing porous ceramic material, especially relates to a bore diameter control method by film fluid jet emulsify technique, mainly applying to the preparation of ceramic material with regular pore construction. The specific technical project is as follows: a method of preparing porous ceramic material, is characterized by: use film fluid jet emulsify technique to control and prepare mono-disperse non-polar / polar emulsion, which means: the disperse phase flows into continuous phase through fenestra of film emulsified medium and form primary emulsion in the condition of shearing force; take said primary emulsion as discontinuous phase, which flows into continuous phase in the condition of fluid jet through fenestra and forms mono-disperse emulsion; take said emulsion as mold and disperse it into non-hydrosol which changes into gel through instable poly-condensation; the gel after leaving plate is burned to get high-ordered porous ceramic material.
Owner:NANJING UNIV OF TECH
Leakage-stopping agent with sustainable expansibility
The invention discloses a leakage-stopping agent with sustainable expansibility. The leakage-stopping agent with sustainable expansibility comprises 50 to 70 wt% of a bridging agent, 10 to 20 wt% of a packing agent, 1 to 5 wt% of fibrous material and 10 to 15 wt% of delayed-expansion gel material, wherein the bridging agent is a mixture of vermiculite, rice hull and nut shell according to any ratio; the packing agent is a mica sheet; the fibrous material is a plant straw; the delayed-expansion gel material is a polyacrylamide gel particle. The leakage-stopping agent has certain deformability and strength, has sustainable expansibility within a certain time, can improve the leakage-stopping effect and the loading capacity of stratum, can reduce the loss of lost circulation and can improve the comprehensive efficiency of well drilling.
Owner:CNPC BOHAI DRILLING ENG
Preparation method of spherical particles of thermoplastic plastic
The invention relates to a preparation method of spherical particles of a thermoplastic plastic. The method comprises the following steps: S1, mixing thermoplastic plastic powder, a deformation assistant and a surface protection stabilizer to obtain a raw material mixture; S2, adding the raw material mixture into a dispersing medium and heating, then, separating the heated mixture, washing the filter residue and drying, and finally crushing the filter residue and sieving to obtain the spherical particles of a thermoplastic plastic. The particles prepared by the method provided by the invention are better in degree of sphericity, and have the characteristics of wide application range and no limit by types of plastic (polymers). Appropriate deformation assistants, surface protection stabilizers and operating conditions can be found for nearly all thermoplastic polymers to obtain the spherical particles. The spherical particles have less influence on property of the material such as molecular weight, component distribution and melt fluidity.
Owner:张兴华 +1
Double crank type hollow flexible hinge
InactiveCN101025187AReduce internal stressExtended range of rotationPivotsHinge angleHorizontal diameter
The invention discloses a hyperbolic rod-type hollow flexible hinge, symmetrically cutting out left and right reels on the two opposite surfaces of a rectangular cube, cutting out vertical bar in the vertical center of the rectangular cube, cutting out horizontal bar in the horizontal center of the rectangular cube, and the vertical bar, the horizontal bar and the right reel form hollow regions A and C, the vertical bar, the horizontal bar and the left reel form hollow regions B and D; the left and right reels and the horizontal and vertical bars separate the rectangular cube into upper and lower link rods. And the invention adopts hollow design and converts the traditional notched flexible hinge into reel flexible hinge, thus enlarging its rotation range and reducing structural inner stress, and applied to large-travel intelligent control mechanisms.
Owner:BEIHANG UNIV
Automatically-crushed remigration particle gel profile-control and water-shutoff agent
The invention relates to an autoslack remigration pearlgel water plugging control agent which belongs to oil-field injection well water plugging control agent. The chemical water plugging control agent applied to effectively control the contained water when the oil field enters the middle-late phase, has come into the phase of large-dose deep water plugging control. The performance of gel deep water-plugging control agent of chromium gel / complex-ion polymer / resin used in present technology is more excellent than common polyacrylamides gel and acrylamide monomer gel, but the lower remigration, high-deformability and delayed crosslinking can not satify the requirements, so the invention obtains the glue by adopting salt resistance polymer, temperature-resistance polypropeneamino solution with concentration of 0.05-0.4 %, 0.02-0.2 % flocculant, 0.2-0.8 % modified mylar crosslinker, and 0.01-0.1 % cellulose ether disperser, with 60-90 DEG reaction temperature of the prepared solution and 7.2-8.0 of pH value. The gel can be remigrated, have properties of dilatability, high viscoelasticity and delayed crosslinking, and the intensity can be adjusted. The said glue can form gel when injected into the well for 5-7 days, then the gel breaks up after 30 days and remigrates to the deep ground layer to plug the ground layer.
Owner:盘锦市庆联油田工程技术服务有限公司
Electrically conductive thin film formed from an ionic liquid and carbon nanotubes having a high aspect ratio, and actuator element comprising the thin film
InactiveUS20090115286A1Improve response speedImprove electronic conductivityLamination ancillary operationsPiezoelectric/electrostriction/magnetostriction machinesCarbon nanotubeActuator
The present invention provides an actuator exhibiting improved performance. The actuator is formed of an electrically conductive thin film formed from an ionic liquid and carbon nanotubes having an aspect ratio of not less than 104; or an electrically conductive thin film formed from an ionic liquid and carbon nanotubes having a length of not less than 50 μm.
Owner:NAT INST OF ADVANCED IND SCI & TECH
Electroluminescent diode device
ActiveCN103325951AReduce power consumptionReduce the starting voltageSolid-state devicesSemiconductor/solid-state device manufacturingUltraviolet lightsElectron transporting layer
Owner:TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
Electrically conductive thin film formed from an ionic liquid and carbon nanotubes having a high aspect ratio, and actuator element comprising the thin film
InactiveUS8004146B2Reduce deformationImprove conductivityLamination ancillary operationsPiezoelectric/electrostriction/magnetostriction machinesCarbon nanotubeActuator
The present invention provides an actuator exhibiting improved performance. The actuator is formed of an electrically conductive thin film formed from an ionic liquid and carbon nanotubes having an aspect ratio of not less than 104; or an electrically conductive thin film formed from an ionic liquid and carbon nanotubes having a length of not less than 50 μm.
Owner:NAT INST OF ADVANCED IND SCI & TECH
Waterborne epoxy resin coating for ships
InactiveCN105062313AImprove mechanical propertiesAccelerated corrosionAnti-corrosive paintsEpoxy resin coatingsTricarboxylic acidAluminum silicate
The invention discloses a waterborne epoxy resin coating for ships. The waterborne epoxy resin coating comprises a component A and a component B, wherein the weight ratio of the component A to the component B is (95-110) to (0.5-1.8). The component A comprises the raw materials in parts by weight: 20-30 parts of epoxy resin E-44, 15-25 parts of siloxane modified epoxy resin, 5-15 parts of novolac epoxy resin, 1-5 parts of allyl glycidyl ether, 5-10 parts of aluminum silicate, 3-8 parts of polypyrrole hollow balls, 3-6 parts of a quartz powder, 2-6 parts of titanium dioxide microspheres, 2-6 parts of kaolin, 2-5 parts of lithium-based bentonite, 0.5-1.5 parts of zinc oxide, 2-5 parts of barium metaborate, 1-2 parts of micaceous iron oxide, 5-15 parts of poly(vinyl alcohol), 1-2 parts of polytetrafluoroethylene, 1-2 parts of emulsified silicone oil, 1-2 parts of a wetting agent, 1-2 parts of castor oil, and 15-30 parts of deionized water. The component B comprises the raw materials in parts by weight: 20-40 parts of cyclohexane tricarboxylic acid anhydride, 5-15 parts of m-xylylenediamine, 2-8 parts of propylene glycol methyl ether acetate, 2-8 parts of texanol ester alcohol, and 15-25 parts of deionized water.
Owner:ANHUI KAILIN ADVANCED MATERIAL CO LTD
Piston for an Internal-Combustion Engine and Method for Manufacturing a Piston of this Type
InactiveUS20110154984A1Easy to slideSimple possibilityPlungersMachines/enginesCooling chamberInternal combustion engine
A piston for an internal-combustion engine is made up of a first part and a second part. One of the two parts forms the piston head and the other part forms the piston skirt. A cooling chamber, which is delimited by material of the first part and by material of the second part, is configured in the piston. The two parts are joined together positively and non-positively via a press fit formed by a projection of the second part, with the projection engaging with a recess in the first part.
Owner:THYSSENKRUPP METALURGICA CAMPO LIMPO
Electromagnetic energy harvester with flexible substrate and method for preparing electromagnetic energy harvester
InactiveCN102723839ASmall sizeReduce spacingDecorative surface effectsDynamo-electric machinesBiological bodyEngineering
The invention provides an electromagnetic energy harvester. The electromagnetic energy harvester comprises a cavity which is formed by a flexible structural layer, and a permanent magnet block which is packaged in the cavity, wherein the flexible structural layer comprises the flexible substrate, and planar coils and a permanent magnet array, which are positioned on the flexible substrate; the permanent magnet array is prepared by using an electroplating method; and the cavity is formed in a folding mode preferably. The energy harvester is compatible with an integrated circuit (IC) process and can be applied to special environment in which device deformation is required. When the flexible substrate is made of a flexible material with bio-compatibility, the energy harvester can be applied to organisms such as built-in bio-sensors, biomedical monitoring and living organism detection.
Owner:PEKING UNIV
Bolt falling preventive structure and hold ring
A bolt falling preventive structure and a hold ring used for a semiconductor manufacturing apparatus, enabling the easy extraction and insertion of the bolt while maintaining a necessary holding force, and manufacturable at low cost. A seat hole (12a') with a diameter larger than that of a screw insert hole (12) is formed in the surface of a fixed body, in which the screw insert hole (12) for passing a body fixing bolt (10) therein is formed, on the opposite side of the surface thereof in contact with the head of the body fixing bolt (10). The hold ring (13) formed in a cylindrical shape on the outer periphery, having a rear end part with a diameter larger than the inner diameter of the seat hole (12a), having a tip part with a diameter equal to or smaller than the inner diameter of the seat hole (12a), and having, at the tip part, a bolt engagement part (13a) engaged with the ridge part of the body fixing bolt (10) is fitted to the seat hole (12a). Thus, the body fixing bolt (10) can be prevented from falling.
Owner:CKD
Flexible wearable air pressure sensor, preparation method and application thereof
ActiveCN108663154AHas a bendableDeformableFluid pressure measurement using ohmic-resistance variationElectricityEngineering
The invention discloses a flexible wearable air pressure sensor and a preparation method and application thereof. The flexible wearable air pressure sensor comprises a flexible top layer provided witha first surface and a second surface opposite to the first surface, wherein the second surface is provided with a microstructure, which can make a sensitive distinguishable response according to thechange of the borne pressure and is electrically connected with a power supply; a flexible bottom layer which is provided with a third surface, wherein the at least the third surface is conductive andis in electrical contact with the microstructure; and a sealing gas chamber formed between the flexible top layer and the flexible bottom layer, wherein at least partial chamber wall of the sealing gas chamber is formed by at least partial area of the second surface and at least partial area of the third surface, and the air pressure in the sealing air chamber reaches the set vacuum degree. The flexible wearable air pressure sensor has the flexible wearable characteristics, and the testable air pressure ranges from 20 kPa to 101 kPa. The preparation process is simple, and the cost is low.
Owner:SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
Oil-based drilling fluid blocking agent and preparation method thereof
The invention discloses an oil-based drilling fluid blocking agent and a preparation method thereof. The oil-based drilling fluid blocking agent is prepared from a solid state mixture being 60 to 150meshes prepared by compounding oil-containing plant residue materials containing rich plant fiber and auxiliary materials accounting for 0.2 to 1 percent of the oil-containing plant residue materials,wherein the oil-containing plant residue materials are residue left after the grease removal from the oil-containing plant; the auxiliary materials are at least one kind of materials from calcium carbonate powder, magnesium stearate powder, talcum powder, superfine silica powder and calcium hydrophosphate powder with the mesh number being smaller than or equal to 60 meshes. The blocking agent isobtained through proportionally mixing the oil-containing plant residue materials and then performing drying, crushing, grinding and sieving. The preparation method is simple; the raw materials can beeasily obtained; the cost is low. The oil-based drilling fluid blocking agent has the characteristics of water absorption and oil absorption expansion, deformation capability, degradability, oleophilic performance and easy dispersion; the influence on the viscosity of the drilling fluid is small; waste materials can be reused; the cost is low; the environment is protected.
Owner:CNPC BOHAI DRILLING ENG
Hollow glass bead cladded with phenolic resin, and preparation method of hollow glass bead
ActiveCN108822581AImprove temperature resistanceImprove stress resistancePigment treatment with macromolecular organic compoundsThermal insulationBreakage rate
The invention discloses a hollow glass bead cladded with phenolic resin, and a preparation method thereof. The hollow glass bead is of a nuclear shell structure, and the inner kernel is a hollow glassbead, and the shell is the phenolic resin. The hollow glass bead is prepared from the following steps: firstly processing the hollow glass bead in a 20-30% NaOH solution at 30-50 DEG C to obtain a surface-hydroxylated hollow glass bead; and then putting the surface-hydroxylated hollow glass bead into a mixed aqueous solution containing phenol and formaldehyde, stirring and reacting at the temperature of 70-80 DEG C to obtain the product. The preparation method disclosed by the invention is simple, low on equipment requirement, low in cost, short in period, environmentally-friendly, safe, andeasy for industrial production; the composite hollow beam particle is uniform in cladding, the hollow bead has a certain tenacity and deformability while satisfying the high temperature resistance andpressure resistance; the hollow glass bead is low in breakage rate in a dynamic grinding environment, and can be well applied to automobile weight reducing materials, thermal insulation materials, coatings and other fields.
Owner:SHANGHAI INST OF TECH
Cement dry-mixed mortar applicable to 3D printing and preparation method thereof
PendingCN109704672ADeformable associativityGood combinationAdditive manufacturing apparatusEmulsionFiber
The invention relates to the field of raw materials for 3D-printed buildings, specifically to a cement dry-mixed mortar applicable to 3D printing and a preparation method thereof. The cement dry-mixedmortar comprises the following components: cement, dry sand, an admixture, fiber, an additive, an acrylic emulsion, a water reducing agent and water. The cement dry-mixed mortar has deformability andgood bonding property, can deform and is insusceptible to cracking under external force, and still maintains an unchanged original shape when the external force is removed; when the cement dry-mixedmortar is utilized for 3D printing, a 3D-printed building can be rapidly molded and does not collapse under the state of no mold; the rheological characteristic of a traditional cement material is changed, and the cement dry-mixed mortar has dough-like plasticity; the cement dry-mixed mortar can be rapidly molded and does not collapse in the process of use, thereby achieving the purposes of capability of preparing a special-shaped member and continuous construction without arrangement of a mold; in addition, through formula components and the preparation method provided by the invention, the cement dry-mixed mortar can reach a strength of 35 MPa and an impermeability grade of P8.
Owner:北汇绿建集团有限公司
Preparation method of acidically-decomposable high-temperature-resistant gel blocking agent
The invention relates to a preparation method for preparing an acidically-decomposable high-temperature-resistant gel blocking agent by adopting modified bentonite as a raw material. The preparation method comprises two portions, i.e. modification of bentonite and preparation of gel blocking agent. Specifically, the preparation method comprises the following steps: modifying the bentonite by using sodium hydroxide, Na2CO3 and water, mixing the modified bentonite, acrylamide, 2-acrylamide-2-methyl propyl sulfonic acid, non-ion surfactant, a cross-linking agent and an initiator, and performing the reaction under certain conditions, thus obtaining the gel blocking agent. The preparation method has the beneficial effects that the strength, the flexibility and the water-absorption expansion capacity are good, the performance can be maintained in an environment of 150 DEG C, and the gel has an acidic decomposition property that is not possessed by other gel blocking materials. The gel blocking agent can be acidically decomposed both in a hydrochloric acid solution and a hydrofluoric acid solution, the higher the temperature is, the higher the decomposition speed is, and the broken-down performance is good.
Owner:新疆科瑞石油工程技术服务有限公司
High-temperature-resistant, solvent-resistant silicone-rubber-based flexible graphene heating film
The invention relates to the manufacturing method of a high-temperature-resistant, solvent-resistant silicone-rubber-based flexible graphene heating film. The method comprises the following steps of adding the graphene of silicon resin cladding processing and a heat-resistant additive in a solvent-resistant silicone rubber; simultaneously, stirring and acquiring an uniformly dispersed silicone-rubber-based graphene dispersion solution; adding a cross-linking agent and a catalyst in the dispersion solution, mixing uniformly, and then vacuumizing and removing bubbles; then, coating on a releasefilm, forming a coating layer with a certain thickness after drying; and then, vulcanizing for 0.5 to 3h at 50 to 200 DEG C; and cooling to a normal temperature, and then acquiring a graphene flexiblehigh-temperature-resistant solvent-resistant silicone rubber composite film. In the invention, a flexible solvent-resistant silicone rubber is taken as a matrix, and the graphene after silicone resincladding processing and the heat resistant additive are taken as fillers; the graphene and a heat-resistant additive are uniformly dispersed in a silicone rubber matrix so that the film is conductive, generates heat, and is high-temperature-resistant and solvent-resistant; and under a low applied voltage, a high surface temperature can be acquired, conductive performance is formed under a low content, and a flexible and deformable conductive heating composite film with good mechanical performance can be manufactured.
Owner:JIANGNAN GRAPHENE RES INST
Preparation method of silicone rubber-based flexible and deformable electric-conducting and heating composite film
The invention relates to a preparation method of a silicone rubber-based flexible and deformable electric-conducting and heating composite film. The preparation method comprises the following steps: taking and adding silicone rubber into carbon black and carbon fibers or stainless steel fibers, and performing ultrasonic treatment and stirring simultaneously to obtain a uniformly-dispersed mixture solution; adding a cross-linking agent into the solution, performing uniform mixing, pouring the mixture into a tetrafluoroethylene mold, simultaneously performing vacuum-pumpin to remove air bubbles, then performing cross-linking for 0.5-10 hours at a temperature of 20-100 DEG C, and performing cross-linking molding to obtain a flexible silicone rubber conductor of a hybrid filler. According to the preparation method provided by the invention, the flexible silicone rubber is taken as a matrix, and the carbon black and the carbon fibers or the stainless steel fibers are taken as the hybrid filler and are uniformly dispersed in the silicone rubber matrix, so that both electric conduction and heating are realized; under relatively low applied voltage, relatively high surface temperature can be obtained. The hybrid filler can form a synergistic effect, the electric conduction is formed with relatively low content, and the flexibility of the silicone rubber can be kept; the flexibility of an electric conduction network can be kept to facilitate the preparation of a flexible and deformable heating body.
Owner:HUBEI UNIV OF TECH
Packaging
ActiveUS10427860B2Easy to operateSignificant “ product ” feel and sensationClosuresDispensing apparatusFrustumBiomedical engineering
Packaging comprising a pouch for containing a product and allowing the release thereof, comprising a manually deformable jacket comprising a first flexible film. The first film being closed on itself so as to form a frustum having a first end and a second end, the cross section of the frustum narrowing toward the first end. The packaging also comprising a base formed by a second flexible film and sealed at the second end of the frustum so as to close the second end, the base and the jacket being sealed “wrong-side to wrong-side” so as to form together a manually deformable pouch. The packaging also comprising a closure device through which the product is intended to flow during release and comprising a sleeve sealed at the first end of the frustum.
Owner:SOC DEMBALLAGE & DE CONDITIONNEMENT S E M C O
Microbubble workover fluid and preparation method thereof
The invention relates to a microbubble workover fluid and a preparation method thereof and belongs to the field of workover treatment of petroleum and gas. The microbubble workover fluid provided by the invention is composed of the following components in parts by mass: 90-200 parts of water, 0.2-1.6 parts of soapberry extract, 0.1-1 part of fatty alcohol-polyoxyethylene ether AEO, 0.5-2 parts of xanthan gum and 0.3-0.8 part of thiourea. The microbubble workover fluid provided by the invention is high in viscosity, good in foam stability, high in oil resistance, high in capacity of resisting degree of mineralization and suitable for gas condensate-containing natural gas wells with high degree of mineralization and low pressure. The microbubble workover fluid provided by the invention is non-toxic and easy to degrade, and does not pollute the environment.
Owner:PETROLEUM ENG TECH RES INST CHINA PETROLEUM & CHEM CORP NORTH CHINA OIL & GAS CO +1
Packaging material and packaging method for dye sensitized solar cell
InactiveCN101950692AGuaranteed performanceEfficient packagingLight-sensitive devicesSolid-state devicesHost materialSilica gel
The invention relates to a packaging material and a packaging method for a dye sensitized solar cell. The packaging material consists of the following components in percentage by weight: 70 to 95 percent of organic silicon gel and 5 to 30 percent of reinforced material, wherein the reinforced material is glass microspheres or polystyrene microspheres with particle size of 5 to 80 mu m. The packaging method comprises the following steps of: weighing 70 to 95 weight percent of organic silicon gel serving as a packaging body material; adding 5 to 30 weight percent of glass microspheres or polystyrene microspheres with particle size of 5 to 30 mu m into the organic silicon gel and blending the materials; printing the mixture onto a packaging side of the cell; and solidifying the whole cell at the temperature of between 20 and 60 DEG C for 12 to 72 hours after an upper substrate and a lower substrate of the cell are abutted so as to package the cell. The method of the invention has the advantages of simple operation and no need of high-temperature treatment.
Owner:IRICO
Multi-rotor unmanned aerial vehicle based on four-press-rod integral tensioning structure
PendingCN109572987AIncrease load capacityHigh speedFuselage framesAircraftsInteraction pointEngineering
Owner:GUIZHOU INST OF TECH
Deformable plugging block, and preparation method and application thereof
ActiveCN109384879AControllable expansionDeformableDrilling compositionSealing/packingCross-linkKarst
The invention relates to a deformable plugging block, and a preparation method and application thereof, belonging to the field of plugging during petroleum drilling. The deformable plugging block comprises, by weight, 100 parts of water, 1 to 38 parts of acrylic monomers, 1 to 40 parts of acrylamide monomers, 1 to 38 parts of sulfonate monomers, 1 to 7 parts of a cross-linking agent, 1 to 13 partsof a curing agent, 0 to 19 parts of a weighting agent and 0 to 7 parts of an initiator. The deformable plugging block and the preparation method and a construction process thereof in the invention are directed at large-crack and karst-stricken complex formation leakage, particularly have good plugging effect on malignant leakage containing flowing strata and karst-bound formation water, improve plugging effect, reduce the cost of plugging construction, and guarantee the normal operation of drilling construction.
Owner:CHINA PETROLEUM & CHEM CORP +1
Underwater connector capable of being plugged and unplugged wetly
InactiveCN103022797AHas wet-mating characteristicsReliable WatertightnessSecuring/insulating coupling contact membersVulcanizationMarine engineering
The invention relates to an underwater connector capable of being plugged and unplugged wetly. Projecting cylindrical projections (4) are arranged on the surfaces of contact pins (7), seal rings (8) are arranged in jacks (3) matched with the cylindrical projections (4) on the surfaces of contact pins (7), and after the contact pins (7) are plugged into the jacks (3), the seal rings (8) are squeezed on the cylindrical projections (4) on the surfaces of contact pins (7). The underwater connector capable of being plugged and unplugged wetly has the advantages that the underwater connector is capable of being plugged and unplugged wetly by the aid of the principle of 'isolation from a water body', has reliable water tightness as a plug (1) and a socket (2) are integrally formed by vulcanization, and is guaranteed to be capable of bearing underwater 1000-meter pressure when working in an underwater environment for a long time, and since the plug (1) made of nonmetal materials is nonconductive to magnetism, the underwater connector is usually used for detection equipment such as underwater robots and underwater lighting and marine animal tracking equipment.
Owner:沈阳兴华航空电器有限责任公司
Manufacturing method of chip inductor, and chip inductor manufactured by manufacturing method
InactiveCN112071579AEasy to heat press embeddedImproved compression molding resultsInductances/transformers/magnets manufactureUnwanted magnetic/electric effect reduction/preventionInductorInductance
The invention provides a manufacturing method of a chip inductor. Spherical powder is used for preparing a magnetic core of a center layer, flaky iron-silicon-aluminum powder is used for preparing anouter-layer magnetic sheet, and the spherical powder effectively improves the pressing forming effect of a coil, so effective hot-pressing embedding of the coil can be guaranteed. The flaky iron-silicon-aluminum powder adopted by the outer layer has high magnetic conductivity, so that magnetic lines of force can be effectively gathered, the loop of an inductance magnetic field is greatly improved,and the inductance value is increased. The chip inductor manufactured through the method has the advantages of being high in magnetic conductivity, small in size, low in loss, and high in inductancevalue under the the same size and DCR.
Owner:POCO HLDG CO LTD +2
Heel restorer
InactiveCN111067607AQuick resetGuaranteed accuracyPneumatic massageExternal osteosynthesisCalcaneusEngineering
The invention relates to the technical field of fracture traction restorers, in particular to a heel restorer. The restorer comprises a lantern ring and a plurality of air bags fixedly connected to the inner wall of the lantern ring, the air bags are arranged in the axis direction of the lantern ring, and an air supply piece communicating with the air bags is fixedly connected to the lantern ring;and one end of the lantern ring is slidably connected to a sliding piece in the axial direction of the lantern ring, the sliding piece is connected to a transverse fixing mechanism and a longitudinalfixing mechanism, and the fixing directions of the transverse fixing mechanism and the vertical fixing mechanism are perpendicular to each other. Before calcaneus is restored, the air bags are used for fixing a leg of a patient, then the transverse fixing mechanism and the longitudinal fixing mechanism are used for restoring the calcaneus, and the problem that in the prior art, the calcaneus fracture cannot be restored conveniently, accurately and rapidly is solved.
Owner:朱怀宇
Deformation honeycomb cellular structure kitchen table-board and preparing technique thereof
InactiveCN101254050AImprove pressure resistanceIncreased shear strengthLamination ancillary operationsLaminationSurface layerHoneycomb
The invention relates to a versiform honeycombed kitchen table-board and a fabrication process thereof. The table-board has the structures that a rostone plank stuff is cemented to a versiform honeycomb plate to be used as surface layer; a balance layer is cemented to the lower part of the versiform honeycomb plate, and one side edge of the balance layer is integrally wrapped by the rostone plank stuff on the surface layer which is hot-bent; the honeycomb density of the two sides of the versiform honeycomb plate is thick, and the pore diameter is small; the honeycomb density of the middle part of the versiform honeycomb plate is thin, and the pore diameter is big. The invention has the fabrication process that PUR hot melt adhesive is adopted to cement the three plank stuffs which are then processed through compaction; a V-shaped groove is processed at the position that needs to be bent on one side edge of the rostone plank stuff; a connecting part, the thickness of which is 1mm, is left; ultraviolet laser is used for local heating, and the molding is realized after softening and bending, so that the wrapping process on the side edges is completed. The versiform honeycombed kitchen table-board and the fabrication process thereof have the advantages that the three materials are compounded to form the table-board with an integral structure, so that the compressive strength and the shear strength of the integral cabinet table-board can be greatly increased; the thick density, the small pore diameter, and high strength of the versiform honeycomb plate can balance the integral stress of the table-board, and the material is saved; the weight of the integral cabinet table-board is reduced; the fabrication process is novel and unique.
Owner:路军
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