51results about How to "No need for additional investment" patented technology

The invention belongs to the technical field of road engineering materials, in particular to a concentrated composition of waste rubber composite modified pitch and a preparation and use method. The concentrated composition is prepared from waste tire rubber powder, petroleum pitch, natural pitch, synthetic tuber, polyolefin, a swelling agent and an aid by preparing procedures. When in use, a product can be proportionally mixed with substrate pitch on a construction site to prepare waste rubber composite modified pitch for spraying construction or be mixed and stirred with the substrate pitch at a pitch mixture stirring station into a rubber pitch mixture for paving construction.

The invention provides an adhesive for a plywood, prepared from the following raw materials according to parts by weight: 70-80 parts of dispersion medium, 20-35 parts of degreased soyabean protein powder, 0.5-3 parts of sodium carbonate, 2-6 parts of urea, 1-2 parts of complexing agent and 1-5 parts of enhancer. The adhesive provided by the invention has the characteristics that all the components have excellent mutual synergistic effect, a materials such as a metal salt is compounded with the soybean protein, and simultaneously, glutaraldehyde is taken as the enhancer so that the problem of poor water resistence of the common soybean protein adhesive is solved; therefore, the adhesive is capable of meeting the waterproof requirement of the adhesive for the plywood and guaranteeing the practical performance of the soybean protein adhesive; and the plywood prepared by using the adhesive provided by the invention is capable of meeting the international requirements of the class II plywood. Besides, the invention also provides a method for preparing the adhesive for the plywood; and the method is simple in process, convenient for operation and suitable for popularization and application.

The invention relates to a process for manufacturing medical operating table cloth, which is characterized by comprising the following steps of: (1) making fibers into a cotton web; (2) combining the cotton web with resin; (3) preheating and premoulding the cotton web combined with the resin; (4) transferring a hydrophilic agent into the cotton web by using a processor after the cotton web is moulded but before dried; (5) completely drying and moulding the cotton web in the step (4); and (6) coiling the cotton web by a coiling machine and uncoiling and packaging after conveyed for inspecting quality. By carrying out hydrophilic treatment in the middle section of production, the invention does not increase fields, the investment of equipment or the consumption of time, labor and energy and can finish various functional attached treatments at one step.

The invention discloses a dynamic fault diagnostic method of polymer aggregation in a gas-solid fluidized bed reactor. By using the method, a fault detection variable set formed by a plurality of key variables which have influence on the fault aggregation is selected, a fault diagnostic model by applying a multi-component dynamic principle component analysis theory is established and a control limit for detecting whether faults generate or not by combining with a nuclear density estimation technology is determined. The invention avoids the complicated process mechanism analysis, has the remarkable advantages of directly utilizing the existing measurement variable of DCS, not needing to add any hardware investment or installing any equipment, adding a section of functional module only in a DCS engineers and having convenient installation and use besides the advantages of non-inserting type, safety, environmental protection and accurate sensitivity.

The invention discloses a fault distance detection method for an active power distribution network, and the method comprises the following steps: first, obtaining the data of an active power distribution network; second, determining each power supply section so as to confirm the troubled section; using the forward-backward sweep method to calculate the injection current of the downstream of the troubled point to the troubled point; calculating the voltage phase amount and the current phase amount at the downstream end of the troubled section and calculating the nominal position of the troubled point; and finally calculating the distance from the troubled point to a transformer substation. In the method of the invention, the distribution-type power supply multi-point accessing is considered, and only through the use of the local voltage and current phase amounts and the synchronous current phase amount of the distribution-type power supply, it is possible to realize the fault distance detection for the active power distribution network. In addition, through the comparison of the current at the two sections of an area section, the positioning of a troubled area section can be realized. Through the calculation of the fault current and the contribution of the downstream current of the fault point to the fault current, the positioning and distance detection for the fault can be realized, making the method suitable for the fault distance detection under the condition of a multi-point distribution-type power supply accessing.

The invention provides a method for monitoring flow meter faults of a turbine system and belongs to the field of online monitoring of a turbine. A data coordination method is adopted by the method so that broken-down flow meters can be monitored and identified. The method specifically comprises the steps that (1) data coordination calculation is conducted through steady-state condition measured data according to the uncertainty of measured values of measured parameters and a system constraint equation; (2) the minimum objective function value of data coordination is compared with a fault detection threshold value, whether the flow meters break down or not is judged; (3) if it is detected that the flow meters break down, fault identification is conducted on the flow meters one by one, the measured parameters corresponding to the flow meters serve as non-measured parameters, and the minimum objective function value of data coordination is calculated again; the new minimum objective function value is compared with the fault detection threshold value, so that the broken-down flow meter is identified. According to the method for monitoring the flow meter faults of the turbine system, redundant flow measurement information in the turbine system can be effectively used for detecting and identifying the flow meter faults and the method has the advantages of being easy to achieve, efficient and low in cost.

The invention relates to a method for treating printing and dyeing wastewater by a composite biological enzyme. The method comprises the following technological steps: 1), pumping the printing and dyeing wastewater into a regulating tank and keeping the printing and dyeing wastewater in the regulating tank for 10.5 hours; 2), conveying the wastewater into a primary settling tank, adding FeSO4 and liquid caustic soda, and keeping the wastewater in the primary settling tank for 7.25 hours; 3), conveying the wastewater into an anaerobic tank, adding an anaerase and a coenzyme, and keeping the wastewater in the anaerobic tank for 14.9 hours; 4), conveying the wastewater into a medium settling tank and keeping the wastewater in the medium settling tank for 16.56 hours; 5), conveying the wastewater into an aeration tank, adding an aerobiotic enzyme and a coenzyme, introducing air to aerate, and keeping the wastewater in the aeration tank for 37.4 hours; and 6), conveying the wastewater into a final settling tank, and discharging the effluent after mud and water are separated in the final settling tank. The method for treating the printing and dyeing wastewater by the composite biological enzyme has the advantages of good treatment effect, low cost, and reduction of secondary pollution, etc.

The invention relates to a method for realizing large-capacity sequence-of-event (SOE) record based on a program logic controller (PLC) device, and the method is characterized in that a large-capacity SOE function of a large-sized hydropower station can be realized through a program software function of the PLC device. The invention relates to a method for realizing the SOE function based on the PLC device, and the method is free from depending on a hardware SOE recording module, has the advantages that the real wiring is less, the cost is low, stability and reliability in running can be realized, the switching-value SOE data can be processed in large capacity, the analog-quantity SOE is supported, and the expandability is strong and is applicable to other automatic systems.

The invention discloses a bean-pulp-based adhesive for modified materials and a preparation method of the bean-pulp-based adhesive. The adhesive is prepared by 25-35 parts of low-temperature degreased protein powder, 3-8 parts of active agent, 0.1-0.8 part of catalyst, 5-10 parts of enhancer, 0.2-1 part of curing agent and 70-80 parts of dispersion medium. The preparation method includes dispersing, mixing, heating, homogenizing, emulsifying, stirring and the like. The bean-pulp-based adhesive and the preparation method thereof have the advantages that the water resistance requirements of the adhesive for the transverse splicing of the modified materials can be satisfied, and the practical performance of the protein adhesive is guaranteed; the problems of low modified material transverse splicing strength and organic volatile pollution are solved thoroughly; the main raw materials of the adhesive are renewable resources and conform to the principles of environment protection and sustainable development.

The invention relates to a three-dimensional electrode electro-catalytic reactor wastewater treatment method employing intermittent power supply, and belongs to the technical field of sewage treatment. The method comprises the following steps: adjusting pH of raw wastewater to 5.0-5.5 by adding hydrochloric acid in a pH regulating reservoir; entering a three-dimensional electrode reactor to react; and discharging water after the reaction time HRT of the three-dimensional electrode reactor is 0.5-2.0 hours, wherein the three-dimensional electrode reactor adopts a pulse square wave current power supply; the current density is 2.0-10mA/cm<2>; the pulse duty factor is 0.2-0.6; and the pulse frequency is 0.02-0.1Hz. The method disclosed by the invention is simple and convenient to operate; the reaction efficiency can be improved; and energy consumption for operation of the three-dimensional electrode reactor can be greatly reduced under the premise of ensuring the effluent quality under the same reaction time.

The invention provides a soybean protein adhesive for plywood. The soybean protein adhesive is prepared from the following components in parts by weight: 70-80 parts of a dispersing medium, 20-35 parts of defatted soybean protein powder, 0.5-2 parts of a denaturant, 1-2 parts of an emulsifier, 1-5 parts of an enhancer and 0.02-0.1 part of an initiator. According to the invention, all the components of the adhesive have a good synergistic effect. The defatted soybean protein powder is subjected to denaturation treatment by adopting sodium carbonate or sodium hydroxide, and glycidyl methacrylateis used as a reinforcing agent, so that the problem that a common soybean protein adhesive is poor in water resistance and complex in process is solved, the water-resistant use requirements of an adhesive for plywood can be met, and practical performance of the soybean protein adhesive is guaranteed. In addition, plywood prepared by the adhesive provided by the invention meets the requirement oftype-II plywood in the national standard. Moreover, the invention also provides a preparation method of the adhesive for soybean protein plywood. The method is simple in process, is convenient to operate and is suitable for popularization and application.

The invention relates to an anti-surge device of a centrifugal compressor. The device comprises a first-stage air inlet pressure gauge, a first-stage pressure remote transmission transmitter, an automatic regulating valve, a unit backflow pipeline, a last-stage exhaust pressure gauge and a last-stage pressure remote transmission transmitter. After the above devices are connected with a compressor unit, surge prevention of the centrifugal compressor is achieved. By means of the compressor inlet and outlet compression ratio, backflow of the centrifugal compressor is automatically controlled to prevent surge of the compressor. Influences of air inlet and exhaust conditions are comprehensively considered, and the situation that due to the fact that the air inlet state of the compressor deviates from a design value, assumed conditions for controlling backflow of the compressor cannot stably exist, and equipment is extremely likely to surge before the predicted backflow condition is met is avoided. A plurality of on-site pressure data and remote transmission pressure data can be compared, so that the device is more effective, practical and reliable than other centrifugal compressor backflow anti-surge methods.

Belonging to the optical communication technologies, the invention discloses a manufacturing method of an optical fiber perform with a uniform optical waveguide axial direction. With a process designed and controlled according to the normalized structure of optical fiber waveguides, the method comprises the steps of: first deposing a core and a coating layer within a quartz glass tube by a chemical vapor deposition method in the tube, making the normalization dimension and the refractive index of each layer consistent by means of axial control, with the normalization dimension as a proportionality factor of each layer to one layer therein, then conducting high temperature melting and shrinking so as to form a core rod; second, extending the core rod so as to form a deposition target rod; then preparing a SiO2 dust coating layer by an axial chemical vapor deposition method, and through axial control, depositing the SiO2 dust coating layer decided by the optical waveguide normalization dimension; finally, sintering the SiO2 dust coating layer into a transparent glass rod body, i.e. the optical fiber perform with uniform optical waveguides. The method of the invention is flexible andsimple, and produces the perform with uniform optical waveguides. The method provided in the invention effectively utilizes the conical degrees of the two ends of the perform, increases the effectivelength, reduces the cost, and can be used for high speed production.

The invention discloses a preparation method for a cimicifuga dahuria throat-clearing buccal tablet, and relates to a preparation method for a preparation of the throat-clearing buccal tablet. The preparation method mainly solves the problem that extract of a current buccal tablet for clearing the throat prepared through a common extracting method is poor in mouthfeel under tongue while being tabletted, has a sticky feeling, and is low in bioavailability, and auxiliary materials such as saccharose and starch are easily stuck on teeth to cause decayed teeth. The preparation method for the cimicifuga dahuria throat-clearing buccal tablet comprises the following steps: I, screening raw and auxiliary materials; II, weighing the raw and auxiliary materials; III, mixing the raw materials; IV, mixing the auxiliary materials; V, mixing the raw and auxiliary materials; VI, stirring and pelletizing the raw and auxiliary materials at a high speed; VII, drying; VIII, pelletizing; IX, mixing; and X, tabletting. According to the preparation method, the cimicifuga dahuria throat-clearing buccal tablet prepared by extract prepared by adopting a semi-bionic-enzyme extraction technology is good in mouthfeel, is quick in effect-taking, is high in bioavailability under tongue, is free of a sticking feeling under tongue, is not struck on gingivae and teeth, is refreshing, and does not easily cause decayed teeth; and modern pharmaceutical equipment is adopted, so that the industrial production requirements can be met.

The invention provides a simple and convenient method for producing high-purity ortho-formate by using acrylonitrile byproduct hydrocyanic acid. The method comprises the following steps: firstly producing amine salt from the acrylonitrile byproduct hydrocyanic acid, fatty alcohol and hydrogen chloride, subsequently performing alcoholysis reaction on the presence of corresponding fatty alcohol so as to obtain an ortho-formate reaction liquid, adding a proper amount of an alkali substance in the generated ortho-formate reaction liquid, decomposing nitrogenous impurity compounds such as byproduct 1,3,5-s-triazine at certain temperature, wherein the decomposed product is nitrogen and solid formate with low boiling point, performing aftertreatment on the reaction liquid so as to obtain the high-purity ortho-formate through normal distillation. Therefore, the purpose of producing the high-purity ortho-formate with high yield is achieved.

The invention discloses a high-strength steel continuous galvanizing production method capable of avoiding plating leakage of plating. The high-strength steel continuous galvanizing production methodincludes the steps that the oxygen content, the hydrogen content and the annealing temperature in a continuous annealing furnace are controlled; the oxygen content of a heating section in the continuous annealing furnace is controlled at 200-400 ppm; the hydrogen content in the continuous annealing furnace is controlled, and the H2 content in a soaking section and the H2 content in a cooling section are both greater than or equal to 4.0%. According to the high-strength steel continuous galvanizing production method capable of preventing plating leakage of the plating, the oxygen content of theheating section in the furnace is improved, meanwhile, the hydrogen content of each subsequent section of the heating section is guaranteed, thus strip steel is fully oxidized in the heating section,elements such as manganese and silicon in high-strength steel are prevented from being oxidized into unreducible silicon-manganese oxides under the condition that the oxygen content is very low, under the action of the high temperature in the soaking section and the cooling section of the annealing furnace, the oxidized surface of the strip steel is reduced to the pure iron surface due to the action of hydrogen, enrichment points of silicon-manganese oxidation are avoided, and the condition that the silicon manganese oxides affect organic combination of the plating and the strip steel to formplating leakage points is avoided; and no more investment is required, and economic feasibility is achieved.