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6811results about How to "Raise the grade" patented technology

Liver subsection method based on CT image and system thereof

The invention discloses a liver division method based on a CT image, which comprises the following steps: firstly, an MSCTP artery sequence image and a hepatic portal vein sequence image of the abdomen are pretreated, and the outline of the liver is automatically divided to obtain the liver image; secondly, a multi-scale filtering method based on a Hessian matrix is used for strengthening blood vessels, a dividing method such as region enlargement, and the like is used for dividing the hepatic portal vein, and a three-dimensional topology thinning method is used for picking up the central line of the hepatic portal vein; the blood vessels are identified mutually in classification; distance change and Voronoi arithmetic are then used for calculation, and the outline of the liver is used for covering values to obtain division results; the three-dimensional liver division results are finally reconstructed. The system comprises a liver division module, a blood vessel strengthening dividing and a thinning module, a blood vessel classifying module, a liver dividing module and a three-dimensional reconstructing module. The invention can reduce noise as well as avoid the vagueness of the boundary of the liver, effectively and exactly divides the outline of the liver, improves the division quality of the hepatic portal vein tree, and realizes accurate and rapid division of the liver.
Owner:HUAZHONG UNIV OF SCI & TECH

Trilaminar co-extrusion thermal contraction resin film, manufacturing method and application method thereof

The invention discloses a three-layer coextrusion heat shrinkage resin film, a production method and an application method. The-three layer coextrusion heat shrinkage resin film is produced by taking PE(LDPE, HPPE, LLDPE, mPE), EVA, PP, PA and EVOH resins as the main materials which are matched with a functional master batch and adopting a production method of one-step huffing. The largest transverse and longitudinal shrinking rates of the product can reach 60 percent and 85 percent; the largest shrinking force of the product can reach 2.0N/cm. The shrinking rate and the shrinking force of the product can be controlled and adjusted by controlling various technical parameters to lead a package to be firm and endurable. The packaged objects are pertinently led to reach the anti-rust, anti static, illumination-resistance, anti-aging, anti-puncturing, anti-low-temperature, anti-isolation, anti-bacteria and anti-degradation effects and the like by adjusting the material composition and mixture ratio of each layer. The three-layer coextrusion heat shrinkage resin film is used for replacing the traditional paper box wrappage to reduce the packaging cost. The mechanical properties are good, the pertinence is strong, the materials are saved; when the three-layer coextrusion heat shrinkage resin film is used, the shrinking temperature is low, the power is saved and the packaging cost is saved, thus effectively reducing the production cost and having extremely high application value.
Owner:大连华诺塑胶科技有限公司

Device and method for self-healing control of a multi-level power grid

A device and method for self-healing control of multi-level power grid system are provided in the present invention. The requirements to be satisfied by the present invention are that: realizing interaction and balance between power supplies and loads; controlling and coordinating cooperation coordination and cooperation between various distributed power supplies, micro-grids in multi-levels and their main grids; automatically distinguishing an on-grid state or an isolated island state of a locale grid; and guaranteeing energy supply to the maximum. The device for self-healing control of multi-level power grid is connected in one or more levels of power grids of the multi-level power grid system, and the device includes: a parameter acquiring and monitoring unit, a central processing unit, a human-machine interface and configuration parameter setting and inputting unit, and a regulating and controlling unit. Using frequency as an information carrier to characterize the connection state and the area coverage and grids levels included in the power system, the device enables the loads and the power supplies in the power grid system to distinguish the states of their localized grids by themselves, and performs to perform automatic switching or regulating according to preset strategies. Using frequency as information tie, the device balances supply and demand of power by self-adjustment between the power supplies and the loads in the system, and guarantees the automatic balance and stabilization of the power grid system both in the on-grid state and in the isolated island state.
Owner:ZHUHAI UNITECH POWER TECH CO LTD

Blast-furnace smelting method for vanadium titano-magnetite

The invention discloses a blast-furnace smelting method for vanadium titano-magnetite. The method is realized in a way that: vanadium titano-magnetite accounts for 30-60% of ferrous burden which is fed into a blast furnace, and the burden comprises 40-65% of agglomerate, 30-50% of pellet and 5-10% of lump ore; the diacidic basicities CaO/SiO2 of agglomerate, pellet and blast-furnace slag are respectively controlled at 1.6-2.5, 0.6-1.0 and 1.05-1.20; the content of MgO in blast-furnace slag is controlled at 7.5-9.0%; by adding two batches of ore and three batches of coke and using the charging operation of the development center, manganese oxide ore or sintered manganese ore powder, and fluorite are incorporated into injection coal and injected into the blast furnace along with the coal powder; and thus, the content of MnO in the slag and the content of CaF2 in the slag are respectively controlled at 1.0-4.5% and 0.50-2.0%, and the oxygen-enrichment percentage of the blast furnace is controlled at 2.0-4.0%. Compared with the smelting blast furnace using the same quality and structure of the burden, the comprehensive coke ratio of the invention is reduced by 20-50kg per ton of iron, the content of TFe in the slag is reduced by 50%, and the comprehensive cost per ton of iron is reduced by 30-50 yuan. The invention has wide prospects for popularization and application.
Owner:CENT SOUTH UNIV

Beneficiating method for ilmenite

The invention discloses a beneficiating method for ilmenite, relating to a method for preparing titanium concentrate and iron concentrate by beneficiating crude ilmenite. The method is characterized in that: a beneficiating process of the method orderly comprises the following steps of: (1) grinding the crude ilmenite; (2) performing alkaline leaching pretreatment under the conditions of heating, oxygenating and pressurizing; (3) filtering pulp which is subjected to the alkaline leaching pretreatment; (4) washing filter residue and grinding; and (5) performing magnetic separation to obtain the titanium concentrate and the iron concentrate. In the method provided by the invention, the characteristic of iron and titanium compact symbiosis and the isomorphism occurrence characteristic of vanadium are damaged from the source of vanadium titano-magnetite by adopting the pretreatment process, so that mineral transformation of the vanadium titano-magnetite is realized, dissociation on lattice layers of titanium and iron is realized, high-quality iron concentrate and titanium concentrate with lower iron content are obtained through grinding and the magnetic separation process, an alkaline medium used in the pretreatment can be recycled, and the process has a small influence on environment and a bright application prospect.
Owner:BEIJING GENERAL RES INST OF MINING & METALLURGY

Roller type needling machine

ActiveCN102808290BSaving zero draftGuaranteed zero draftNeedling machinesNeedle penetrationWall plate
A drum-type needling machine belongs to the field of non-woven machinery. It includes a pair of chassis, a needle beam is set on the chassis wallboard of the pair of chassis to penetrate into the relief cavity, and a transmission box is arranged in the middle of the lower cross frame of the chassis; the first and second main shafts are supported between the pair of chassis; a pair of Connecting rod mechanism; roller driving mechanism, connected with the first main shaft; upper roller and lower roller, supported between a pair of chassis, cooperate with the roller driving mechanism; upper needle beam and lower needle beam, fixed on the middle part of the upper needle beam Needle board, the upper needle board is arranged with upper needles, the lower needle board is fixed in the middle of the lower needle beam, and the lower needle board is arranged with lower needles; a pair of connecting rod swing traction mechanisms are arranged in the chamber of a pair of chassis, It is connected with the link mechanism in the box cavity and is also connected with the second main shaft in transmission; the power transmission mechanism arranged on the case is connected with the first main shaft in transmission. Advantages: It helps to improve production efficiency, shorten the process flow, save energy consumed by needle looms; improve the grade of non-woven products.
Owner:CHANGSHU FEILONG NON WOVEN MACHINERY

Novel dyeing and finishing processing technology of micro polyester fabric

The invention relates to a novel dyeing and finishing processing technology of a micro polyester fabric. The novel dyeing and finishing process disclosed by the invention is characterized by comprising the following steps of: (1) pretreatment, namely carrying out cold rolling and stacking processing comprising three stages, namely cold stacking, hot alkali treatment and high efficiency washing, on polyester gray fabric; (2) presetting, namely carrying out high temperature tentering and presetting on a pretreated fabric white body by utilizing a setting machine; (3) dyeing, namely dyeing the preset fabric white body by adopting superfine fiber leveling agent; and (4) cleaning, namely carrying out cleaning post-processing on the dyed fabric to remove disperse dyes which are not set after fibres are dyed. According to the novel dyeing and finishing processing technology disclosed by the invention, an environment-friendly and low-energy-consumption cold rolling and stacking pretreatment technology is used for carrying out pretreatment on the micro polyester fabric, on one hand, desizing effect is good and good dyeing and finishing processing conditions are provided for dyeing, and on the other hand, crease mark of the fabric can be effectively reduced; meanwhile, a formula of a dyeing process additive can be adjusted, albafluid U is added to reduce fabric dyeing scratch, and dyeing defects can be prevented from being caused.
Owner:SHENGHONG GRP CO LTD

Method for manufacturing nickel-based high-temperature alloy forge piece

The invention relates to the technical field of forge process, and provides a method for manufacturing a nickel-based high-temperature alloy forge piece. The method comprises the following steps of: (1) inspecting nickel-based high-temperature alloy raw materials, including re-inspection of chemical components and inspection of steel ingot surface; (2) blanking by adopting a sawing machine sawing method or a chopper hot chopping method; (3) heating the steel ingot; (4) cogging and performing forge deformation treatment; (5) performing last but one heating number forging and last heating number forging; (6) rough processing; (7) heat treating; (8) testing mechanical performance; (9) detecting faults with ultrasonic wave; and (10) inspecting products. According to the manufacturing method provided by the invention, home-made manufacture of nickel-based high-temperature alloy forge pieces achieves a success, utilization of China to the nickel-based high-temperature alloy is broken through, and the quality and grade of products of China can be improved, the requirement of domestic market for high-quality valve rods and valve discs of a steam turbine, seal rings in various specifications and critical parts in aerospace field can be fulfilled, and the competitive capability of native enterprises in the international market can be improved.
Owner:上海宏钢电站设备铸锻有限公司

Vertical sinter ore cooling machine capable of efficiently recycling sensible heat of sinter ores

The invention discloses a vertical sinter ore cooling machine capable of efficiently recycling the sensible heat of sinter ores, which pertains to the technical field of sintering equipment and is used for preventing air leak in the cooling course of sinter ores and effectively recycling the sensible heat of the sinter ores. The technical proposal of the invention is that: the cooling machine consists of a feeding part, a cooling part and a conveying part; the cooling part comprises a vertical closed body, a hot wind pipeline, a blower, as well as a hopper, an upper sealing valve, a pre-storing chamber, a lower sealing valve, a heat exchanging chamber, a wind distributing board, an isopiestic wind chamber and a discharging channel which are in sequence arranged on the body from top to bottom; an annular wind chamber is arranged between the pre-storing chamber and the heat exchanging chamber; the annular wind chamber is communicated with the hot wind pipeline; the isopiestic wind chamber is communicated with the blower; and wind shields and ore falling openings are distributed evenly on the wind distributing board . The vertical sinter ore cooling machine has the following advantages of: 1. an air leak rate near to 0; 2. improved gas-solid heat exchange efficiency of the cooling machine; 3. raised quality of the recycled hot air; and 4. being beneficial to increasing the utilization rate of exhaust-heat boilers. Based on the advantages, the vertical sinter ore cooling machine is expected to be used commonly as an upgraded replacement of the existing sinter cooling machine.
Owner:NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY +1
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