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271results about How to "Avoid disintegration" patented technology

Assessment method for loadable index of oil immersed power transformer

ActiveCN103245857AAvoid disintegrationResolving policy ambiguityElectrical testingEconomic gainPower grid
The invention discloses an assessment method for a loadable index of an oil immersed power transformer. According to the method, the load capacity of the oil immersed power transformer in the future time period is discussed in three aspects of temperature limit restraint, failure rate restraint and economic gain and loss restraint; in the aspect of temperature limit restraint, the maximum load rate meeting the requirement of the safe operation time is assessed with the adoption of a predicted load rate and an environmental temperature, the defect that a conventional scheduling and operating regulation can only give a suggestion interval of the load rate of an overload is overcome, and the problem of an obscure strategy at the border is solved; in the aspect of failure rate restraint, the load amplitude of a device is restrained from the aspect that a failure rate happens to a slave device, and while the load rate is increased, the fault stoppage and the power grid disintegration which are caused by slave device levels are prevented; and in the aspect of economic gain and loss restraint, on the basis that only electric charge gains and impedance loss cost are considered in a traditional method, the checking of a life loss cost is added, so that gain and loss computing is more suitable for the process of overload operation.
Owner:ZHEJIANG UNIV

Fiber/ceramic/metal composite material bulletproof plate and manufacturing method thereof

The invention discloses a fiber/ceramic/metal composite material bulletproof plate and a manufacturing method of the fiber/ceramic/metal composite material bulletproof plate. The fiber/ceramic/metal composite material bulletproof plate is characterized in that the bulletproof plate comprises at least one metal lateral restraint resin composite plate, and a fiber layer, a ceramic layer and the metal lateral restraint resin composite plate form a sandwich structure. The manufacturing method includes the steps of manufacturing a titanium alloy frame through laser welding, manufacturing an ultra-high molecular weight polyethylene plate according to the size of a titanium alloy cavity, fixing the ultra-high molecular weight polyethylene plate into the cavity of the titanium alloy frame through adhesives, connecting a carbon fiber layer with the ceramic layer through adhesives, and connecting the ceramic layer with the metal lateral restraint resin composite plate through a ceramic surface metallization method. The bulletproof plate is high in rigidity, good in tenacity and good in tear resistance, the problems that the phenomenon that the layers are separated due to vibration happening when the bulletproof plate is impacted occurs, and the metal can not play a good role in resisting bullets when directly serving as a bullet bearing face are solved, and the bulletproof performance of the bulletproof plate is improved. The fiber/ceramic/metal composite material bulletproof plate can be widely applied to armored cars and aircrafts which need to be protected.
Owner:TAICANG PAIOU TECH CONSULTING SERVICE

Scaffold Materials-Transition Metal Hydride Complexes, Intermediates Therefor and Method for Preparing the Same

The present invention relates to substances which can be applied to the technical fields of gas storages, polymerization catalysts and optical isomers, their intermediates, and processes for preparing the same, which is characterized in that 1) possible disintegration of structure of the scaffold material (SM) is impeded, and 2) they are prepared by a simple manufacturing system as compared to the substances conventionally suggested in the application field. Specifically, it relates to scaffold material-transition metal hydride complexes comprised of scaffold material (SM) and transition metal hydride (M1H(n-1)) which is chemically bonded to the functional groups formed on the scaffold material, SM-transition metal halide complex and SM-transition metal ligand complex as the precursors, and a process for preparing the same. The SM-transition metal hydride complex according to the present invention is a substance for hydrogen storage which adsorbs hydrogen via Kubas adsorption. The complex according to the invention can store high capacity of hydrogen with safety and reversibility, while disintegration of its structure does not occur even with repeated adsorption-desorption of hydrogen.
Owner:HANWHA CHEMICAL CORPORATION

Automatic optical fiber switching device for intensive wavelength division multiplexing system

The invention relates to a switching device for an intensive wavelength division multiplexing system, in particular to an automatic optical fiber switching device used in an intensive wavelength division multiplexing system. According to the structural key point, the automatic optical fiber switching device comprises a spare optical fiber, a first optical branching device, a first optical power monitoring module, an automatic protection module for an optical path and a first optical switch module, wherein the first optical branching device and the first optical switch module are connected in a main optical fiber line in series in sequence; the optical signal output end of the first optical branching device is connected with the automatic protection module for an optical path by the first optical power monitoring module; and the spare optical fiber is connected to the switching end of the first optical switch module. The switching device has the advantages that the optical path is quickly switched, stable and safe communication is guaranteed, the potential safety hazard of node failure can be eliminated, the self-healing system of a loop network can be prevented from collapsing, a smooth traffic channel is ensured, influence on users can be reduced, and data guarantee is provided for electric power safety production.
Owner:STATE GRID CORP OF CHINA +1

Combined sludge deep dehydration system and deep dehydration technique

The invention provides a combined sludge deep dehydration system and deep dehydration technique. The dehydration system comprises a sludge feed unit, a sludge conditioning modification unit and a pressure filtration dehydration unit, wherein the sludge feed unit comprises a sludge dilution homogenization tank and a sludge mixing delivery assembly; the sludge dilution homogenization tank is connected with the sludge conditioning modification unit through the sludge mixing delivery assembly; and the sludge conditioning modification unit is connected with the pressure filtration dehydration unit. The deep dehydration technique comprises the following steps: (1) treating sludge by the sludge feed unit to obtain the sludge of which the water content is within a certain range; (2) sending the sludge obtained in the step (1) to the sludge conditioning modification unit, and adding a conditioner to perform conditioning; and (3) sending the sludge obtained in the step (2) to the pressure filtration dehydration unit to perform treatment. By optimizing the design, the whole technique has high adaptability, and can flexibly regulate the operation group number and time of the system according to the actual sludge feed quantity and water content condition, thereby ensuring the stable operation of the system.
Owner:SHANGHAI ATON ENVIRONMENTAL LIABILITY

Triaxial-test sample preparation device and sample preparation method

The invention discloses a triaxial-test sample preparation device. The triaxial-test sample preparation device comprises a buckling die and a removing die. The triaxial-test sample preparation device is characterized in that the section of a left petal die is of a semicircular structure; the upper end surface and the lower end surface of the left petal die are respectively provided with a necking petal die; the outer diameter of the necking petal die is smaller than that of the left petal die; a linear type flange is arranged on one edge of the butting plane of the left petal die along the axial direction, and a linear type groove is formed in the other edge of the butting plane of the left petal die. The structure of a right petal die is the same as that of the left petal die, and the right petal die and the left petal die are connected in a fastening manner. Tight hoop sleeves are arranged on upper-end necking petal dies of the left petal die and the right petal die; backing rings are arranged on the upper end surfaces of the left petal die and the right petal die, and the lower end of a top cover is inserted into central holes of the backing rings. A lower fastening component and an upper fastening component are completely same in structure and are symmetrically arranged at the lower ends of the left petal die and the right petal die. A step hole is formed in the demolding drum, and the outer diameter of a cushion block is the same as the minimum diameter of the step hole and the inner diameter of the left petal die. The triaxial-test sample preparation device disclosed by the invention has the advantage that the same pressure on the two ends of a soil sample and on the whole sample is realized so as to meet the requirement of density uniformity of the whole sample.
Owner:SHENYANG ZHONGJIAN DONGSHE GEOTECHN ENG +1

High-strength corrosion resistance distribution box used for electric power

The invention relates to a distribution box, which includes a box body, a box cover, and a fastening mechanism for movably connecting the box body and the box cover. The raw material components of the box body and the box cover are as follows, all in parts by weight: polyethylene resin 40-60 20-30 parts of phenolic resin, 2-10 parts of elastomer, 0.1-15 parts of graphene, 3-7 parts of silicon carbide, 1-10 parts of silane coupling agent, 12-15 parts of semi-reinforced furnace black, calcined 10-12 parts of pottery clay, 6-12 parts of surface-treated Kevlar chopped fibers, 5-7 parts of nanomolybdenum disulfide (MoS2), 0.5-3 parts of aluminum oxide, 3 parts of polydimethylsiloxane ‑5 parts, 0.5‑2.5 parts of flame retardant, 1‑3 parts of dispersant. In the preparation process of the distribution box body and the box cover of the present invention, the raw materials and the proportions, together with the processing technology, make the distribution box box and the box cover of the present invention have excellent flexibility, mechanical properties and corrosion resistance, and at the same time It has good thermal conductivity, improves the performance of the distribution box as a whole, is not easy to age, has sufficient rigidity, and has a long service life, reducing maintenance costs.
Owner:DONGA POWER SUPPLY CO STATE GRID SHANDONG ELECTRIC POWER CO +1

Light conversion film capable of promoting plant growth and preparation method thereof

The invention discloses a light conversion film capable of promoting plant growth and a preparation method thereof, wherein the light conversion film comprises garnet fluorescent powder with the formula of Y(3-x)BaxAl(5-x)SixO12: mCe, nCr, 0 <= x <= 1, m > 0 and n > 0, and a polymer resin or glass with refractive index of 1.4-1.65, wherein the garnet fluorescent powder is uniformly dispersed in the polymer resin or glass. The preparation method comprises the following steps: (1) respectively weighing compound raw materials of yttrium, aluminum, barium, silicon, chromium and cerium according tothe stoichiometric ratio of each chemical composition of an expression, mixing, and grinding to a micron scale; 2) calcining the raw material powder in a reducing atmosphere for 4-5 hours to obtain acalcined product; and 3, grinding the calcined product to a micron order to prepare Ce and Cr-containing fluorescent powder with a garnet structure, mixing the fluorescent powder with polymer resin according to a mass ratio of 1:4-1:1, and preparing the light conversion film according to the existing film preparation process. The fluorescent powder has the advantages that the emission intensity of the fluorescent powder in a red light region is greatly enhanced, the plant light supplementing capability is high, the efficiency is high, and plant growth is promoted.
Owner:GANSU YINIAN TRADING CO LTD

Biodegradable peanut protein plastic

The invention discloses biodegradable peanut protein plastic. The biodegradable peanut protein plastic comprises the following raw materials in parts by weight: 30-35 parts of poly(hydroxybutyate-co-hydroxyvalerate) (PHBV), 55-60 parts of modified poly-beta-hydroxybutyrate (PHB), 15-20 parts of peanut protein powder, 2-2.4 parts of jute fiber, 3-4 parts of silk fiber, 1.1-1.3 parts of a silane coupling agent A-151, 2-3 parts of sodium lactate, 0.5-0.8 part of sodium dehydroacetate, 1.7-2.3 parts of dioctyl terephthalate (DOTP), 2-4 parts of octyl epoxy stearate, 25-28 parts of carbon black N550, 12-16 parts of heavy calcium carbonate, 4-7 parts of kaolin, and 0.7-0.9 part of antioxidant 1076, wherein modified poly-beta-hydroxybutyrate (PHB) is obtained by blending poly-beta-hydroxybutyrate (PHB) with ethylene-propylene rubber for modifying. The biodegradable peanut protein plastic disclosed by the invention can be degraded into low-molecular-weight compounds by virtue of microorganisms and thus the pollution of 'white garbage' can be effectively avoided; the biodegradable peanut protein plastic has the advantages of high degree of flexibility, good impact resistance and oxidation resistance, low water absorption performance and low completely degradation rate and the service life of the biodegradable peanut protein plastic is prolonged.
Owner:广州市炜业塑胶有限公司
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