174results about How to "Good price performance" patented technology

The invention relates to a method and device for performing on-load scheduling on a single-phase load in the intelligent power grid field. A master controller is mounted at an input end of a three-phase wire, a secondary controller is mounted at each single-phase branch of the wire, and the master controller exchanges information with the secondary controllers through communication interfaces. When the wire power unbalanced degree is over limit, the master controller optimizes and formulates a control scheme to operate the secondary controllers to convert the single-phase load between the phases; in the conversion process, the load is free from instant power off, and the power grid is free from impact and interference; and therefore, the distribution circuit dynamically runs in a load balance state, the unbalanced consumption problem of the circuit is completely solved.

The invention provides a method for producing a bamboo fiber, comprising the following steps of sawing off, splitting and softening the bamboo, sending the bamboo material to a bamboo splitting separator to realize combing, splitting separation and airflow classification, thus obtaining the bamboo filament fiber; cooking and drying the bamboo filament fiber, cleaning, dehydrating, oiling and drying the bamboo filament fiber subsequently; and carrying out the enzyme treatment, thus obtaining the coarse bamboo fiber; subsequently carrying out fine treatment, cleaning and dehydrating, bleaching, cleaning, dehydrating, oiling, drying and curing by emulsion, thus obtaining the fine bamboo fiber. The method has high production efficiency, low processing cost and can prepare the bamboo fiber with the diameter within 0.03-0.15mm and the length within 30-300mm.

The invention relates to a system for calibrating receiving performance of a partial-discharge ultrahigh frequency detection device, and the system comprises a giagahertz transverse electromagnetic cell (GTEM) transmission cell, a standard pulse generator, a measure and control computer and a high-speed broadband oscillator, which are sequentially connected with one another through a conducting wire, wherein the high-speed broadband oscillator transmits a branch signal to the GTEM transmission cell, the top of the GTEM transmission cell is provided with a special test window which is provided with a reference sensor and a tested sensor, and the reference sensor and the tested sensor are respectively connected with the high-speed broadband oscillator. The invention also relates to a calibration method by adopting the system. The calibration system and the calibration method have a broadband property and low cost, and not only can be used for electromagnetic radiation sensitivity test, but also can be used for the electromagnetic radiation test; and moreover, the instruments used in the system and the method are simple to configure, low in cost and capable of being used for rapid and automatic test.

A foamed concrete product is characterized in that Portland cement or ordinary Portland cement is taken as gelling material; zeolite powder, metakaolin powder, limestone powder, fly ash or silicon ash powder are taken as admixtures; protein hydrolysate of hoof and horn of animals is taken as a foaming agent; an acrylate coagulator or a polycarboxylic acid type water reducing agent is taken as an adjuvant, and water is active water. In order to improve the early strength, the later compressive strength, the bending strength and the anti-tensile splitting strength of the low-density foamed concrete, a plurality of admixtures comprising the zeolite powder, the metakaolin powder, the silicon ash powder or the limestone powder are chosen, by mutual collocation of the components and contents of the admixtures, the comprehensive improvement of various strengths is achieved, and the multifunctional effects of insulating heat, adjusting moisture, preserving heat, and the like, are obtained. In the foamed concrete blocks of the ordinary Portland cement, the density is 500-800kg/m<3>, the compressive strength is 6-8MPa and the water absorption rate is 5-10%, the heat preserving property and the heat insulating property are obviously improved, the water absorption performance and the moisture adjusting index are remarkably improved, and the better cost performance ratio is obtained.

This invention is related to a process of disposing urban sewage, which comprise the steps of coagulate filtration, ozone oxidation, biological oxidation to dispose urban sewage, so that the residual undegradable organic substances, bacteria and virus in the second-class urban sewage can be removed and the water can be recycled. According to different usages of the recycled water, the process also comprises reverse osmosis or nanoscale filtration treatment to further remove the residual organic and inorganic substances in the water. The process is a combination of coagulate filtration, ozone oxidation, biological oxidation and reverse osmosis, designed to resolve such problems as urban sewage disposal and water recovery. The process can obtain high-quality recycled water with a low cost, showing high cost performance, which is important to resolving urban water depletion, raising the utilization rate of water resources, reducing environmental pollution and promoting sustainable development of the society.

The invention discloses a novel pressure-resistant cabin body made from carbon fiber macromolecular composite materials. The pressure-resistant cabin body comprises two parts of a cylindric cabin body and end covers 7 positioned at two ends of the cabin body. The pressure-resistant cabin body is characterized in that the cabin body consists of an inner protection layer 1, a carbon fiber barrel body 2, a leak-proof layer 3 and an outer protection layer 4 sequentially from inside to outside, the two ends of the cabin body are in sealed connection with the end covers 7 through connecting fittings 5 and sealing rings 6, and the cabin body and the connecting fittings 5 are in glued joint. The invention further discloses a manufacturing technology of the novel pressure-resistant cabin body made from carbon fiber macromolecular compound materials. The manufacturing technology comprises the following steps of preparation for a mold, compounding of glue stocks, winding of the carbon fiber barrel body, curing of the carbon fiber barrel body, glued joint of the carbon fiber barrel body and the connecting fittings, processing of the leak-proof layer, the processing of the protection layers and the assembling of the end covers. The pressure-resistant cabin body made from carbon fiber macromolecular compound materials can be used in adverse environment with high temperature, low temperature and high pressure in the deep sea, and is high in pressure-resistant intensity, and the problems of leaking and sealing of compound materials under high pressure state are solved.

The invention relates to a large-tonnage level electronic scale and a non-weight weighing correction method. The electronic scale body is provided with a charging barrel bin, and four or more uniformly distributed support bearing lug seats. A weighing sensor with a cylindrical structure is installed below each support bearing lug seat; the weighing sensor is installed on a base; a spherical surface is formed on the upper end of the weighing sensor and connected with a pressure with an end surface being an concave spherical surfaced; an upper press plate and a lower press plate are connected with the scale body and the base; an adjusting shim is placed on the upper loaded press plate so as to adjust the installation height of each sensor. The non-weight weighing connection method is suitable for the weighing correction of a plurality of resistance strain sheet type weighing sensors in parallel connection, and comprises the steps of calculating an output signal value of a weighing sensor, figuring out a consistent correction coefficient of a weighing instrument and working out the correction efficient of the weighing instrument. The invention has the advantages of simple structure, convenient installation, high weighing precision, great cost performance and convenient weighing correction.

The invention relates to a CPCI redundancy backup system and comprises at least a redundancy backup unit which comprises a first system board module, a second system board module and one or two sections of CPCI bus; wherein, a section of CPCI bus only can be provided with CPCI bus control management by the first system board module or the second system board module at any moment; when the first system board module carries out the CPCI bus control management, the second system board module can receive backup data sent by the first system board module, and when the first system board module breaks down, the second system board module switches the CPCI bus control management authority. The CPCI redundancy backup system can provide the redundancy backup to all plug-ins including a primary system board; a broken-down board can be isolated automatically; and a backup component can be connected automatically. The CPCI redundancy backup system has high reliability and best price performance ratio and is particularly fit for high reliable communication and industry control platform with large I/O data volume, and the CPCI redundancy backup system has wide application prospect in the fields of modern communication, spaceflight, military matters, etc.

A composite foaming material is prepared from foamed polystyrene particles, silicate cement, powdered coal ash, affinity agent and foaming agent through proportional mixing. Its in-situ application method includes such steps as foaming the polystyrene particles by portable electrothermal steam foaming machine, stirring cement mortar by stirrer, sequentially mixing with others, stirring, and in-situ pouring.

The invention, which belongs to the field of technique for preparing rivet contacts, provides a device and a method for producing cold pressure welding compound rivet contacts. The device includes: a main unit base, a upper positioning clamper, a lower positioning clamper, a strip press head, a material-removing press head, a material knife and a forged piece base. The invention improves the precious metal thread entrance of the existing double-layer compound cold pressure welding rivet driver into a die-stamping structure, and changes the original wire material cutting and feeding mode into a compound strip punching and feeding mode, thereby manufacturing unidirectional multi-layer rivet contacts; preparation of bidirectional multi-layer compound cold pressure welding rivet contacts two identical devices is realized after two identical devices are combined, thereby resolving the difficult problem of production of low-cost single, bidirectional multi-layer compound cold pressure welding rivet contacts coated with gold.

The invention discloses a preparation method for oil soluble drag reducer, which is characterized in that high purity an alpha-olefin material is obtained through implementing absorption and distillation pretreatment on alpha-olefin mixture; a Ziegler-Natta catalyst is added for prepolymerization to lead the viscosity of a liquid to be capable of preventing the catalyst from sinking; then polymerization reaction is implemented under a lower temperature between 10 DEG C between zero and 0 DEG C and finished until a conversion rate of monomer reaches 95 percent; then a drag reducing polymer is cut and a dispersing agent is added; then the drag reducing polymer is frozen by liquid nitrogen and is crushed to a granularity of 129 meshes under a low temperature; then the dispersing agent is dispersed, and the drag reducing polymer is mixed with a thickening agent and an aqueous surfactant liquid to prepare a finished product of stable drag reducer suspension. The drag reducing polymer copolymerized through the preparation method has high molecular weight, is easy to crush under low temperature, has fast solution velocity, is not adhered on the wall of an oil pipeline and has high drag reducing rate.

The present invention relates to production process of medium chromium tungsten-containing composite antiwear roller ring, and belongs to the field of high performance cast iron alloy material and casting producing technology. The production process includes centrifugal composite casting and heat treatment. The composite roller ring has one outer layer of medium chromium tungsten-containing cast iron alloy comprising Cr 12-20 wt%, W 1.0-3.0 wt%, C 2.2-3.4 wt%, Cu 0.6-1.5 wt%, Mn 0.4-1.4 wt%, Ce 0.1 wt%, Si not more than 0.7 wt%, P not more than 0.1 wt%, S not more than 0.06 wt% and Fe for the rest; and one inner layer of high strength nodular cast iron. The composite roller ring has the advantages of high wear resistance, less internal stress, high toughness, long service life and low production cost, and is suitable for use in crushing coal gangue and other hard material in brick making industry.

The invention discloses a method for preparing a wood adhesive using cassava starch hydrolyzed sugar. The method is characterized in that the wood adhesive is synthesized from cassava starch hydrolyzed sugar, urea, formaldehyde and melamine under a specific process condition, wherein urea is quantitatively added at three times; pH is modified according to mediate strong acid (4-4.5), weak base (7.5), weak acid (5.0), and weak base (7.5) in sequence during preparation. The adhesive product is low in cost, long in storage time, and relatively high in cost performance, integrates use performance and environmental protection performance, shows a good computability with the existing production process of artificial boards, and can be used for replacing the existing widely used urea resin and melamine formaldehyde resin wood adhesive.

The invention provides a method for detecting a false station in GSM and LTE networks. The new false station detection method provided can be used on 2G, 3G and 4G mobile equipment, such as cell phones adopting the GSM, WCDMA, LTE, LTEFDD or TD-LTE standard, so as to be universal to the Chinese market; safety performance for communication of using users or multiple users in a user area can be enhanced; the method can be used in a low-speed or static state; meanwhile, a final product has the characteristics of high portability and excellent price performance ratio.

A tea for antipyresis, detoxication, lowering blood pressure, decreasing blood fat, losing weight, etc is prepared from lotus leaf through washing, removing veins, disinfecting in high-temp water, cutting for shaping, kneading, backing, drying and kneading.