2475results about How to "Significant technological progress" patented technology

The invention discloses a transmission shaft permanent magnet coupling drive and speed regulation device capable of adjusting magnetic torque, which has a turntable type, barrel type or turntable and barrel combined structure. The device consists of at least one set of axial magnetic field permanent magnet coupling component or / and radial magnetic field permanent magnet coupling component, at least one pair of diving permanent magnet coupling turntable coupling shaft mechanisms which are fit with a driving turntable in the permanent magnet coupling component, a corresponding driving shaft coupling, at least one pair of driven permanent magnet coupling turntable coupling shaft mechanisms which are fit with a driven permanent magnet coupling turntable in the permanent magnet coupling component, a corresponding driven shaft coupling, a pair of permanent magnet coupling turntable air gap and coupling area adjusting mechanisms and a pair of integrated assembling mechanisms which ensures that the system is an integrated structure and is convenient to package, transport and install. The device is applicable in the technical field of transmission shaft coupling drive, the technical field of load speed regulation and the field of power dragging.

A permanent magnet coupling device for a cylindrical transmission shaft comprises at least a group of outer rotor drum assemblies and a group of inner rotor drum assemblies, at least a pair of outer rotor drum shaft coupling mechanisms adaptive to the outer rotor drums, at least a pair of inner rotor drum shaft coupling mechanisms adaptive to the inner rotor drums and corresponding input shaft couplings and output shaft couplings, wherein each group of outer rotor drum assemblies and each group of inner rotor drum assemblies are nested with each other and coupled by permanent magnet air gap magnetic fields; at least radial air gap magnetic field permanent magnet coupling assemblies or axial air gap magnetic field permanent magnet coupling assemblies are arranged and assembled on the adjacent corresponding positions of the outer rotor drums and the inner rotor drums; and the outer rotor drums and the inner rotor drums are coupled with the corresponding input shaft couplings or output shaft couplings by the corresponding adaptive rotor drum coupling mechanisms. The device has the characteristics of higher transmission efficiency, simple and reliable structure, convenient installation, resistance to severe environment, tolerance for shaft eccentricity, load isolation, reduction of vibration and noises, prolonging of equipment life, etc, and has the advantages of not damaging the motors and not affecting the safety of power grids.

The invention discloses a method for preparing cross-linking waterborne adhesive for lithium ion batteries. Waterborne polymers containing organic carboxylic acid, amino or hydroxyl and a water-soluble micromolecular cross-linking agent containing hydroxyl, amino or carboxyl are jointly used as raw materials of the waterborne adhesive and subjected to cross linking through esterification and amidation under the condition of coating and drying of electrode plate paste of the lithium ion batteries. A preparation process is simple, existing lithium ion battery production process conditions are unchanged, electrodes high in bonding performance, flexibility and elasticity are obtained, and problems of low bonding strength among electrode active substances, conductive agents and current collectors and looseness and shedding due to insufficiency in elasticity for relieving expansion and contraction in charging and discharging processes of the lithium ion batteries in the prior art are solved.

An efficient permanent magnet coupling device for a transmission shaft comprises armature winding rotor disks and adaptive armature winding disk shaft coupling mechanisms, permanent magnet rotor disks and adaptive permanent magnet disk shaft coupling mechanisms and input and output shaft couplings, wherein the armature winding rotor disks comprise armature windings and armature winding installing disks; the permanent magnet rotor disks comprise a group of permanent magnets and a permanent magnet installing disk; the permanent magnets are respectively assembled on the circumference of the permanent magnet installing disk, with N and S poles staggered; the armature winding rotor disks and the permanent magnet rotor disks are, face to face, coaxially installed and are coupled with the corresponding input and output shaft couplings by the adaptive disk shaft coupling mechanisms; and air gaps exist between the armature winding rotor disks and the permanent magnet rotor disks. The device has the characteristics of higher transmission efficiency, simple and reliable structure, convenient installation, resistance to severe environment, tolerance for shaft eccentricity, load isolation, reduction of vibration and noises, prolonging of equipment life, etc, and has the advantages of not damaging the motors and not affecting the safety of power grids.

The invention relates to preparation method and application method of a grape special fertilizer, wherein the preparation method comprises the following steps: preparing an I-type fertilizer by taking the following ingredients in parts by weight: 30-40 parts of urea, 20-30 parts ammonium phosphate, 15-30 parts of potassium sulphate, 1-3 parts of humic acid, 1-3 parts of excrement, 1-5 parts of synergist, 0.1-1.0 part of ferrous sulphate, 0.1-0.8 part of zinc sulfate, 0.1-0.6 part of manganese sulphate, 0.1-0.6 part of borax, 0.1-0.4 part of copper sulfate, 3-7 parts of plaster and 3-13 parts of bentonite; preparing an II-type fertilizer by taking the following ingredients in parts by weight: 7-15 parts of urea, 25-35 parts ammonium phosphate, 35-45 parts of potassium sulphate, 1-3 parts of humic acid, 1-5 parts of excrement, 2-5 parts of synergist, 0.1-1.0 part of ferrous sulphate, 0.1-0.8 part of zinc sulfate, 0.1-0.6 part of manganese sulphate, 0.1-0.6 part of borax, 0.1-0.4 part of copper sulfate, 3-7 parts of plaster and 3-13 parts of bentonite; and blending, spraying, pelleting and drying at lower temperature to obtain the product. The application method of the fertilizer comprises the following steps: taking an organic fertilizer and the II-type fertilizer as a base fertilizer; applying the I-type fertilizer before blossom, applying the II-type fertilizer in the young fruit development period, and meanwhile, respectively spraying monopotassium phosphate and rare earth mixed liquid once on the leaf surfaces; and spraying calcium nitrate or calcium acetate to enhance the storage resistance property before picking.

The invention relates to a preparation method of a reduction graphene oxide heat-conducting film. The preparation method comprises the following steps of: firstly weighing graphite oxide, adding the graphite oxide to deionized water, and carrying out ultrasonography, centrifugalizing at low speed for impurity removal, drying and grinding to obtain graphene oxide; dissolving the graphene oxide into a solvent, and carrying out the ultrasonography to prepare a graphene oxide dispersion solution; carrying out vacuum filtration on the graphene oxide dispersion solution by adopting a microporous filtering film, drying an obtained filter cake and the filtering film together, and then stripping the filter cake from the filtering film to obtain a graphene oxide film; acquiring the reduction graphene oxide heat-conducting film by adopting a high-temperature heat treatment or hydriodic acid reduction method in a restricted space. The preparation method disclosed by the invention effectively solves the technical problems of easiness for breakage and difficulty in large-area integrity keeping in preparing the reduction graphene oxide heat-conducting film from the graphene oxide film and is simple and higher in film heat conductivity; the prepared reduction graphene oxide heat-conducting film achieves potential practical application value in the field of heat radiation of a microelectronic device.

The present invention relates to an urban underground engineering simulation test system, underground water simulation system and data acquisition system, in which the simulation box contains horizontal loading plate, horizontal loading device, vertical loading device and several layers of horizontal water inlet pipes. Said invention can implement three-dimensional simulation test of various urban underground railway engineering, tunnel and anderground cave engineering, ground base an foundation work, special underground construction method, side slope engineering and retaining wall engineering, etc.

The invention relates to a one-key intelligent cooking induction cooker comprising a cooker body. The one-key intelligent cooking induction cooker is characterized in that the cooker body is providedwith a function key; the cooker body is internally provided with a power unit, a temperature detection unit, a timing unit, a behavior judgment unit, a cooking control unit and a temperature compensation unit, and the signal output end of the function key is connected to the control signal input end of the power unit and the signal input end of the timing unit; the signal output end of the temperature detection unit and the signal output end of the timing unit are each connected to a signal input end of the behavior judgment unit, and the signal output end of the behavior judgment unit is connected to the input end of the cooking control unit and the input end of the temperature compensation unit; the output end of the cooling control unit is connected to the feedback input end of the power unit, so that a close control loop is formed; the behavior judgment unit is provided with a logical judgment structure for sensing cooking behaviors, types of cooking ingredients and food cooking degree, so that a one-key intelligent cooking structure is formed. The one-key intelligent cooking induction cooker has the characteristics of the simple structure, easy operation, various dishes and the like.

The invention provides a treatment method of acid heavy metal wastewater, comprising the following steps of: removing massive impurity of the wastewater by the means that the wastewater passes through grids, and adjusting the pH to 8-9; adding 20-80mg / L heavy metal collecting agent before entering a coagulating floatation tank, and adding 0.5-4.0mg / L biological flocculants before entering the floatation tank; removing organic matter, heavy metal and suspended solids by means of cavitation air floatation; subsiding the water discharged in an air floatation way by a wobble plate, and filtering in a continuous microfiltration device to remove suspended solids and colloid; concentrating air floatation slag by the sludge of a floatation slag tank and a sedimentation tank, putting 20-60mg / L cationic polyacrylamide, and recovering in a drying way; and adding 1320kg of deionized water, 400kg of sodium hydroxide and 380kg of polyethylenimine into the reaction kettle, controlling the temperature of the reaction kettle to be below 25 DEG C, slowly and dropwise adding 1008kg of carbon disulfide, and cooling to room temperature to obtain the heavy metal collecting agent of orange viscous liquid.

Disclosed in the invention is a preparation method of a Ni-MOF electrode material. A nicdel nitrate aqueous solution with the total concentration of 0.0075 to 0.43mol / l is added into a PTA / DMF solution with the total concentration of 0.005 to 0.03 mol / l, wherein the adding speed is 2 to 5ml / min and the volume ration of the nicdel nitrate aqueous solution to the terephthalic acid solution is 1.5-3 :1; after dissolution stirring of 1 to 2 hours, a precursor solution is obtained; solvothermal reaction is carried out on the precursor solution for 12 to 48 hours in a hydro-thermal kettle with the temperature of 120 to 200 DEG C, centrifugal washing and filtering are carried out on an obtained green precipitate respectively by DMF and absolute ethyl alcohol, and drying is carried out under the temperature of 80 DEG C, thereby obtaining a Ni-MOF electrode material. According to the preparation method, the specific capacitance of the material can be up to 1500F / g; after 3000-times charging and discharging circulation, 90% of specific capacitance still can be kept. The method is simple and can be controlled easily; the conditions are mild; and the production cost is low.

The invention belongs to preparation of biological cell formulations, and in particular relates to a preparation method of dendritic cell (DC) vaccine loaded with autologous tumor associated holoantigen. The preparation method comprises the following steps: preparing the autologous tumor associated holoantigen, collecting and separately culturing DCs, impacting the DCs by the autologous tumor associated holoantigen, maturing the DCs and preparing autologous tumor antigen specific DC vaccine. The invention solves the problems in the prior art that the immunogenicity of tumor antigen is not strong enough, the antigen target spots are incomplete, the tumor antigens of most tumor patients are difficult to acquire, and the like. The DC vaccine provided by the invention has the advantages of effectively inducing tumor antigen specific cytotoxic T lymphocyte (CTL) in vitro and in vivo, efficiently generating specific cytotoxicity on tumors, having high overall effective rate and no obvious toxic side effects in clinical application, and the like.

The invention discloses a production method of grifola frondosa polysaccharide and relates to the technical field of food microorganism application. The method comprises the following steps of: weighing raw materials, wherein rice bran is 1-6g / 100mL, wheat bran is 1-3g / 100mL, monopotassium phosphate is 0.09-0.36g / 100mL, and magnesium sulfate is 0.04-0.16g / 100mL; adding a needed amount of water into the raw materials, loading the raw materials without regulating the pH (Potential of Hydrogen), and sterilizing and boiling at 121 DEG C for 30min; after cooling, inoculating the grifola frondosa liquid seed (CCTCC (China Center For Type Culture Collection) M2013286) which is also disclosed in the invention, wherein the inoculation amount is 8-10%, the fermentation temperature is 25-30 DEG C, and the fermentation time is 4-7d; and carrying out deproteinization, alcohol precipitation, centrifugal separation and vacuum drying on the centrifugal separation liquid of a fermented product or the centrifugal separation liquid which is obtained after the mycelia which has wall broken is extracted with hot water, so as to respectively obtain exopolysaccharide and mycelia polysaccharide. By adopting the method disclosed by the invention, the purpose of efficiently converting the rice bran and the wheat bran to the grifola frondosa polysaccharide with a high value through liquid state fermentation can be achieved better.

The invention provides a preparation of a corrosion and scale inhibitor used for high alkaline high chlorine circulating cooling water which is prepared according to the following parts by weight: 23-25 parts of PESA, 23-25 parts of 2-phosphonic acid butane-1, 2, 4-tricarboxylic acid, 12-15 parts of corrosion and scale inhibitor, 10-15 parts of sodium gluconate, 5-8 parts of alkyl epoxy carboxylate, 2-3 parts of BTA, and 10-20 parts of pure water. The preparation comprises the following steps: adding industrial phosphoric acid of 400-420kg into a reaction kettle for stirring, adding triethanolamine of 140-160kg slowly within 30-35min, stirring for 50-60min, keeping the temperature at 40-80 DEG C, adding pure water of 385-400kg and stirring for 20-30min; adding zinc oxide of 45-55kg under stirring, stirring for 90-120min, and keeping the temperature at 40-80 DEG C to obtain the corrosion inhibition potentiating agent, adding PESA into the 2-phosphonic acid butane-1, 2, 4-tricarboxylic acid to mix with the solution of the corrosion inhibition potentiating agent, sequentially adding alkyl epoxy carboxylate, pure water and sodium gluconate to stir for 30-40min, keeping the temperature at 20-35 DEG C, then adding BTA, stirring for 30-60 min, and keeping the temperature at 20-35 DEG C to obtain the composite corrosion and scale inhibitor.

The invention provides a high-hardness high-corrosion-resistance high-entropy alloy nitride coating. The molecular formula of the high-hardness high-corrosion-resistance high-entropy alloy nitride coating is (AlCrTiZrNbV)N. The invention further provides a preparation method of the coating. The method comprises the steps of firstly, cleaning a matrix and then conducting ion cleaning; secondly, sending the treated matrix to a sputtering chamber to deposit a TiN transition coating, controlling a Ti target material through a DC cathode and depositing the TiN transition coating of 100-200 nm; andthirdly, depositing a TiAlN transition coating on the TiN transition coating and depositing the (AlCrTiZrNbV)N coating on the TiAlN transition coating. The (AlCrTiZrNbV)N coating obtained through thepreparation method has high hardness exceeding 35 GPa and also has excellent corrosion resistance. The coating has the characteristics of being simple in production process, high in deposition speed,low in cost and the like and also has the advantages of being high in production efficiency, low in energy consumption and low in equipment requirement.

The invention is a method for recovering Au and Cu from Au-plated PCB waste, adopting oxydol and vitriol as reacting reagent to recover Au and Cu from the Au-plated PCB waste. And it researches the effect of concentration and utilization of vitriol, oxydol utilization, reacting conditions, and reacting time on the results. And the experimental result indicates that both overhigh and overlow acidity are detrimental to the Au and Cu recovery. Considering from the cost and time aspects, it advances the optimum concentration and utilization of vitriol. And the Au peeling ratio can be 99% and the Cu recovery rate can be 99%; after purified, the obtained Au has purity up to 99%, and the obtained bluestone can crystallize to obtain bluestone products. And the used reagent is nontoxic, cheap and easy to obtain; no harmful matters are generated in the experiment course; and the invention has better economic and social benefits and wide development future.

The invention discloses a high-temperature sewage treatment reverse demulsifier of ultra-heavy oil. The method comprises the following steps of preparing chlorinated polyether by taking propanetriol and epichlorohydrin as materials and boron trifluoride ether solution as an initiator; preparing cationic poly ether by placing the chlorinated polyether and trimethylamine in a high-pressure reactor; by taking carbinol as a solvent, and boron trifluoride diethyl etherate as the initiator, repeatedly and alternatively carrying out Michael addition reaction and amidation by ethanediamine, methyl acrylate and the like to prepare 3.0-generation dendritic macromolecule polyamide-amine; by taking polyethylene glycol and poly propylene glycol as materials, and potassium hydroxide powder as a catalyst, adding polypropylene glycol to prepare non-ionic polyether after the polyethylene glycol reacts a period of time; finally by taking 3.0-generation polyamide-amine as a cross-linking agent, preparing the modified composite polyamide-amine-polyether high-temperature sewage treatment reverse demulsifier of the ultra-heavy oil by compounding cationic polyether and non-ionic polyether.

The invention provides a method of the cultivation frame type management in a melon grafting and seedling shed. Melons do not resist soil-borne diseases and cannot be planted in a continuous cropping manner. The method comprises the following steps: taking white-seed pumpkins as rootstocks; taking melon breeds as spikes for seedling and grafting by means of peg grafting or nurse grafting or cleft grafting; performing accelerating germination and seeding, wherein graft seedlings are seeded 8 to 10 days earlier than actually grown seedlings, meanwhile, the seeding in prepared nutrition soil is carried out at different stages, and melon seedlings are grafted on the rootstocks of the white-seed pumpkins; planting not less than three melon seedlings per square meter based on the row spacing of 60cm x 58cm or 65cm x 54cm or 70cm x 50cm; punching; fertilizing; watering; inserting the seedlings; trimming branches and adjusting vines 5-20 days after the planting, removing all 8-10 sub-vines above 3-4 remained melon setting vines, leaving only one main vine and suspending the man vine through a nylon cord; performing pollination, fruit thinning as well as prevention and treatment of plant diseases and insect pests; and harvesting melons after the melons are ripe. The method is used for planting the melons.

A barrel permanent magnet coupling capable of adjusting coupling space and area of an air gap magnetic field is of rotary barrel structure or rotary disc / rotary barrel composite structure and comprises at least a group of axial magnetic field metal conductor permanent magnet coupling components or / and radial magnetic field metal conductor permanent magnet coupling components, at least a pair of driving permanent magnet coupling rotary disc coupling mechanisms adaptive to driving rotary discs in the permanent magnet coupling components and corresponding driving shaft couplings, at least a pair of driven permanent magnet coupling rotary disc coupling mechanisms adaptive to driven permanent magnet coupling rotary discs in the permanent magnet coupling components and corresponding driven shaft couplings, a pair of permanent magnet coupling rotary disc air gap space and coupling area adjusting mechanisms and a pair of integral assembling mechanisms ensuring the system to be integral structure so as to be convenient for packaging, transporting and installing. The coupling is suitable for the technical fields of transmission shaft coupling drive and load speed regulating and the field of power dragging.

The invention discloses a technology of a microwave heating synthesis method of fiber carbamate; the method is that: firstly, the fiber is soaked in carbamide aqueous solution for completely adsorbing the carbamide, the fiber / carbamide even mixture is obtained by filtering and drying, and then the fiber / carbamide mixture is placed in a microwave oven for being heated, thereby obtaining the fiber carbamate. The synthesis technology of the fiber carbamate provided by the invention has no solvent pollution, organic solvents and any catalyzers do not need, the reacting time is speed, and the energy consumption is low. The synthesized fiber carbamate products has good dissolubility in 6 to 10 wt% of NaOH aqueous solution within the temperature range of -10 to 5 DEG C, and the concentrated solution which is stable, transparent and is suitable for industrial spinning and membrane manufacturing can be prepared.

The invention discloses a low-filling high-heat-conductivity organic-inorganic compound which comprises, by weight, 50-1000 parts of organic component serving as a heat-radiating matrix, 100-400 parts of flaky inorganic matter serving as a first heat-conducting filler and 10-800 parts of non-flaky inorganic matter serving as a second heat-conducting filler.A heat-conducting network of two dimension / three dimension and two dimension / one dimension is formed in the organic heat-radiating matrix by compounding the inorganic heat-conducting fillers various in shape, so that the low-filling high-heat-conductivity organic-inorganic compound has high heat conductivity and good storage stability.

The invention discloses an ultra-small MoS2 nanosheet. The surface of the MoS2 nanosheet is modified with polyvinylpyrrolidone, and the diameter of the modified MoS2 nanosheet ranges from 15 nm to 25 nm. The invention further discloses a preparation method of the ultra-small MoS2 nanosheet. The preparation method comprises the following steps: a sulfur source and a molybdenum source are dissolved in water and stirred until the resources are completely dissolved; polyvinylpyrrolidone is dissolved in the solution of the sulfur source and the molybdenum source; the solution is transferred into a stainless steel reaction kettle with a polyphenyl lining for closed reaction, a reaction product is washed with an ethanolamine water solution and distilled water, and the ultra-small MoS2 nanosheet with the surface modified with polyvinylpyrrolidone is obtained. The invention further provides an application of the ultra-small MoS2 nanosheet as a photo-thermal conversion material. The ultra-small MoS2 nanosheet has good colloid stability, photo-thermal conversion capacity and photo-acoustic imaging capacity and has broad application prospect in the fields of tumor treatment and the like.

The invention relates to a manufacturing method of small-diameter wood glulam slicing veneers and a leveling drying device. Small-diameter wood, tended wood, inferior wood or cordwood produced in the cutting and manufacturing process, and the like which are not easily efficiently used are softened by a composite agent by being infused with pressure, and then after flitches are integrated by finger joining and obliquely slotting the wood with a moisture-curable type adhesive, the flitches are sliced into wet veneers, and the wet veneers are then sent to a special continuous high-temperature ironing leveling dryer to be leveled and dried into sliced veneers in the clamping of upper and lower steel belts. The invention integrates a series of special technologies and transforms small-diameter wood which is not easily used into sliced veneers which meet requirements of various technical specifications with very wide application ranges. Low-grade wood is fully used, which improves the added value of products and comprehensive utilization efficiency of forest resources. The invention has the advantages of simple and reasonable technique method, low equipment cost, good product quality, broad development prospects and the like. Significant social and economic benefits can be produced after the implementation.

The present invention relates to a Chinese phonetic symbol Chinese holographic information processing method of a computer or an embedded system, belonging to the Chinese information processing technology field. The Chinese information is processed by using only 26 latin letters and using words as unit, and the invention is fully compatible with ASCII. The present invention can be widely used in the Chinese information processing, the book publishing, the Chinese teaching, the illiteracy eliminating in the rural area, and the external Chinese teaching, and so on. The Chinese phonetic symbol employed by the invention can be directly used for expressing Chinese information. The present invention brings huge convenience to the person who does not know or is not accustomed to the Chinese character for learning, acquiring, commanding, and expressing the Chinese information and the Chinese mandarin.

A process for preparing the superfine (less than 0.5 microns) particles of charred bamboo and the application of said superfine particles in preparing the synthetic fibres are disclosed. Said synthetic fibres features high insulating function, antibacterial action, and adsorptivity, and radiating far infrared rays.

The invention provides a method for preparing a fluid loss additive for drilling fluid. The fluid loss additive is mainly prepared from the following raw materials in part by weight: 30 to 35 parts of humic acid sodium, 20 to 30 parts of etherified starch, 10 to 15 parts of hydroxyethyl cellulose, 5 to 10 parts of polyacrylamide and 5 to 10 parts of water soluble silicone oil, preferably 30 parts of humic acid sodium, 25 parts of etherified starch, 10 parts of hydroxyethyl cellulose, 7 parts of polyacrylamide and 6 parts of water soluble silicone oil. The preparation method comprises the following steps of: heating the raw materials to 120 DEG C under sealing and stirring conditions and under the pressure of 0.8 to 1.2MPa, keeping the temperature for 8 to 10 hours to obtain a semi-finished product; and drying the semi-finished product at the temperature of between 85 and 100 DEG C, and adding 5 to 10 parts of sulfonated asphalt into the semi-finished product to obtain the fluid loss additive, wherein at the step of synthesizing the etherified starch, 50 to 80 parts of starch are soaked into 50 to 80 parts of 10-percent sodium hydroxide solution for swelling for 24 to 48 hours, the mixed solution is dried at the temperature of between 75 and 85 DEG C, the obtained product is ground to obtain the semi-finished product, 30 to 50 parts of chloroactic acid are added into 30 to 50 parts of the semi-finished product, the mixed solution is sealed and stirred, the pressure is controlled to be 0.8 to 1.2MPa, the PH value is adjusted to 7 to 8, and the mixed solution is heated to 135 to 145 DEG C and then kept at the constant temperature for 15 to 17 hours to obtain the etherified starch. The fluid loss additive possesses high anti-salt, anti-calcium and anti-high temperature properties, and has the effects of carrying drill cuttings and making mud cakes dense.

The invention provides an alkali-activated carbonate composite cementing material and a preparation method thereof. Modified sodium silicate solution and solid powder material are weighed at the mass ratio of (0.6-1.0):1; in the preparation process, under the stirring of 60-120 turns / min, the solid powder material is slowly added into the modified sodium silicate solution to continuously stir for 3-5 minutes to obtain the alkali-activated composite cementing material, wherein the modified sodium silicate solution is prepared in the following steps: sodium hydroxide is dissolved in liquid sodium silicate, or sodium hydroxide and solid sodium silicate are dissolved in water together and the obtained product is continuously stirred until solution is transparent; the modulus of the obtained sodium silicate solution, i.e. the mass ratio of silica and sodium oxide is 1.2-2.0, and the mass concentration sum of the silica and the sodium oxide is 25-45%; the solid powder material is prepared from the following components in parts by weight: 15-30 parts of slag, 5-20 parts of coal ash, 10-30 parts of metakaolin and 20-70 parts of dolomite dust or limestone powder; and the above raw materials are successively arranged in a blender mixer and are stirred at normal pressure and temperature at 60-120 turns / min for 5-15 minutes to obtain the finished product.

A discharge mill technology using simple hollow long electrode is based on the numeral control technique and features use of simple hollow long electrode plus guider. The said electrode features simple cross-section, hollow structure for delivering liquid and high length-radium ratio (more than 3:1). Its advantages are high productivity to Ti-alloy, refrectory alloy and stainless steel.

The invention relates to a method for avoiding overheat tube burst in a tubular boiler of a power station boiler, belonging to the technical field of power station boilers. The method comprises the following steps: selecting representative tubes from a nest of tubes to install measurement acquisition points of temperature of an outer wall of the boiler; reading data from a power plant real-time database, and storing the data in a relational database of a local server; dynamically calculating the generation thicknesses of scale cinder in tubes of overheater and reheater in real time; separating out data of metal tube sections of parts exceeding metal stress strength overtemperature values of tube walls from calculated results and storing the data in an overtemperature summarizing database; and according to calculated inner wall working medium boundary layer temperature, metal inner wall oxidation aggravation temperature margin and real-time generation thickness of scale cinder in the tubes, automatically generating a visual distribution graph according to sequence. The method provided by the invention can accurately give out a tube burst early warning of the power station boiler, and preset measurements can be taken to avoid great direct financial losses to enterprises and nation caused by tube burst of the power station boiler.

The invention belongs to bridge construction, and particularly relates to dynamic real-time monitoring method for concrete bridge prestressed tendon tensioning force and a special prestress construction system. The dynamic real-time monitoring method for the concrete bridge prestressed tendon tensioning force includes the steps of initializing and real-time dynamic control loading. The prestress construction system comprises at least one tensioning device, and each tensioning device comprises a hydraulic station, a reversing valve bank, a jack, an A / D data collecting module, a PLC, a central processing unit, a human-computer interface, a direct force measuring device, a hydraulic force measuring device, a prestressed tendon elongation measuring device, a friction resistance test device and a security alarm device. The double-control requirement, difficult to met in the prior art, for taking stress control as the principle thing and an elongation value as a checking item is met, the dynamic real-time monitoring method has the advantages that construction quality and safety can be effectively ensured, and problems found in the tensioning process can be solved in time.

The present invention is one new kind of cellulose solvent comprising lithium hydroxide 3.0-7.0 wt%, thiourea 3.0-6.0 wt% and water the rest. The said cellulose solvent may be used in dissolving natural cellulose and regenerated cellulose via mixing with cellulose, freezing and defreezing; or, it is first cooled to -10 deg.c to 0 deg.c and then maintained in -8 deg.c to 0 deg.c to dissolve natural cellulose and regenerated cellulose directly. The new cellulose solvent may be used to reach cellulose dissolvability as high as 100 % to prepare transparent dense cellulose solution. The dissolved natural cellulose may have molecular weight up to 200000. The new cellulose solvent may be used in preparing regenerated cellulose film, mixture film, cellulose / nano particle functional film and non-woven fabric, and may be also used as cellulose derivatizing reaction medium.