Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

487results about How to "Low renovation cost" patented technology

Distributed type power supply zone branch circuit three-phase load current balance monitoring method and device

The invention discloses a distributed type power supply zone branch circuit three-phase load current balance monitoring method and device and belongs to the field of power supply and distribution devices. At least one three-phase load current balance main controller is arranged, load current signals of each phase circuit in each branch loop are collected, according to the obtained load current signals of each phase circuit, the three-phase current unbalance rate or the mean value of the three-phase current unbalance rate of each branch loop is computed, and the unbalance situation of three-phase load current of each branch loop is judged. The magnitude of load current in each unit meter box of each branch loop is collected, and the phase of unit meter box load which needs to be adjusted is determined. According to the three-phase load current unbalance situation of a certain branch, a control instruction is issued to an automatic phase-changing switch in a unit meter box corresponding to the branch loop, converting of load phases is carried out, adjusting of three-phase load current balance of each branch loop on the low-voltage side of a distribution transformer is achieved, and the real balance of distribution transformer low-voltage side main loop three-phase load current is guaranteed.
Owner:宿迁卡诗博工贸有限公司

Oily sewage processing method

The present invention relates to a treatment method of oil-bearing sewage. Megadose coagulants are added in the oil-bearing sewage so as to carry out gel and milk breaking on the sewage and to form small alum flowers, and then polymer organic flocculating agents are added toenlarge the small alum flowers and then oil residues are formed in an oil-receiving flow tank to separate from water, thus sewage is purified. The oil residues are recycled in an oil residue collecting pool by a dirty oil collecting device and then pumped to an oil residue cleaning device, and oil residue cleaning liquor is added after being pumped to enter the oil residue cleaning device again. The oil residues are cleaned and the ''clean'' dirty oil acquired enters an oil gas gathering system then. The cleaning waste liquor acquired after the oil residues are cleaned is added into flow inlet water through a pump according to a certain proportion. The cleaning waste liquor is added in the inlet water as the coagulant to lead the coagulants originally added to be recycled. The present invention leads the treatment of water containing high oil stain to generate no secondary discharge pollution. The oil stain recycling rate reaches to 99 percent and the present invention has the advantages of low sewage treatment cost, few device and technics alternation and low alternation cost. The dirty water after treated meets corresponding standards.
Owner:洪骧龙

Modular building component and on-site hoisting building method

The invention relates to the fields of building materials and architectural technologies, in specific to a composite building member and an architectural method for field craning of cast-in-site beams and columns. At present, most of buildings in our country still follow the prior arts of manual masonry and painting for wall bodies, so that such problems as wasting time, wasting labor force and high labor intensity and etc are caused. The target of the invention is to fabricate all kinds of building members through industrialized production, and then, to transport to the construction site for craning and assembly. The technical scheme is as follows: Wall panels are supported through adjusting bracing rod assembly; partition wall panels and external wall panels are embedded with hooked nuts on side walls; the hooked nuts are connected with externally-arranged hoops; studs for fixed construction columns are put through upper rings and lower rings of the hoops, so that structural column bodies can be formed through pea gravel concrete casting and ramming. The invention has the following effects: Precast integrated large wall bodies, slabs and etc., so that no joggle seam appears on the panels after assembly, and neither face needs screeding or painting; meanwhile, the invention has advantages of safe, convenient, fast and smooth on-site execution, saving large number of form panels and scaffoldings, simple and convenient process, high integrated strength and perfect shockproof performances.
Owner:张兴汉

Big dipper multi-mode time service receiving device

The invention relates to a big dipper multi-mode time service receiving device which consists of a broadband time service active antenna and a multi-mode radio frequency receiving module. The technical scheme has no need of arranging a plurality of special frequency band time service antennas according to the navigation satellite and the frequency band. The radio frequency receiving module does not adopt the time multiplexing technology to frequently switch the local frequency and the medium-frequency filtering frequency point, also does not adopt the tunable method to switch the frequency band and the multi-channel demodulating method, but adopt the software technology to control the programmable medium-frequency filter to automatically select a main spare time service signal through a storage control processor, thereby ensuring the transmission demodulating quality. In the invention, as the time service active antenna and the radio frequency receiving module are integrated in a whole, the provided latest circuit design and structure not only can enhance the flexibility and reliability of multi-mode time service, but also can be favorable for reducing the reforming cost of switching single-mode time service into multi-mode time service of the traditional CDMA and TD-SCDMA mobile communication base stations.
Owner:张建城

Preparation method of wide-temperature range rare earth-based composite oxide denitration catalyst

The invention discloses a preparation method of a wide-temperature range rare earth-based composite oxide denitration catalyst. The preparation method comprises that titanium dioxide and montmorillonite as carriers, ammonium metatungstate, ammonium metavanadate, cerium nitrate and manganese oxide as active components and accessory materials are subjected to blending, ageing decaying, kneading, molding, drying and roasting to form the wide-temperature range rare earth-based composite oxide denitration catalyst, wherein the accessory materials comprise monoethanolamine, citric acid, ammonia water, lactic acid, stearic acid, glass fibers, wood pulp, hydroxypropyl methyl cellulose, polyoxyethylene, citric acid and water. The preparation method utilizes the rare earth-based composite oxide as an active ingredient, shortens catalyst activation time, effectively controls a SO2/SO3 conversion rate, improves a catalyst temperature adaptation capability, widens a catalyst use temperature range from 320-400 DEG C to 150-420 DEG C, has denitration efficiency more than 90%, and can carry out ammonia spraying denitration operation at a denitration area temperature of 150 DEG C when a boiler is started.
Owner:山东信义汽车配件制造有限公司

Structure for repairing urban bituminous pavements and construction method thereof

The invention belongs to the technical field of urban bituminous pavement repairing, and discloses a structure for repairing urban bituminous pavements and a construction method thereof. The structure comprises a bituminous pavement layer, a base layer, an upper layer high-strength geogrid, a geocell reinforcement layer filled with old bituminous pavement mixed aggregates, a lower layer high-strength geogrid, a waterproof layer and roadbed from top to bottom. According to the structure for repairing urban bituminous pavements and the construction method thereof, prior old bituminous pavement materials are fully used, and cross impacts of rainfall and ground water on the roadbed and the bituminous pavement are segregated effectively. Simultaneously, by means of a combined reinforcement structure of the upper layer and the lower layer high-strength geogrids and the geocell reinforcement layer, the anti-deformation capacity of the bituminous pavement structure can be improved effectively, cracking and deformation of the bituminous pavement structure are restricted, and the service life of the bituminous pavement is increased. Particularly, when local bad foundation exists in the roadbed, the 'girder effect' formed by the combined reinforcement structure can effectively transmit loads on the local bad foundation to around foundation, and secondary damages to a novel paved bituminous pavement structure are avoided.
Owner:HUAZHONG UNIV OF SCI & TECH +1

Method for removing NO and SO2 from environment pollution emissions

The invention provides a method for removing NO and SO2 from environment pollution emissions, which belongs to the field of electrochemistry technology and environment protection technology, in particular to an electrochemical method for simultaneous desulfurization and denitration without secondary pollution. The invention discloses the novel wet type electrochemical method, which has the advantages of simple operation, low cost, environment protection, capability of continuous operation at a higher removal efficiency and capability of singly or simultaneously realizing the desulfurization and the denitration. The invention is characterized in that firstly, carrying out electrolysis in a water-phase electrolyte to generate ferrous iron ions and compounds thereof to realize the effect of absorbing NO and SO2 from a gas phase to a liquid phase; and then, respectively reducing the NO into NH<4+> and N2 and oxidizing the SO2 into SO4<2-> through the electrochemical oxidation-reduction characteristics. The novel electrochemical desulfurization and denitration method can realize the removal of waste gas of single NO or SO2, can also be used for simultaneous desulfurization and denitration, has small influence by O2 and acidic gas such as HCL and the like in smoke gas, and has no emission of waste water or other secondary pollutants. The desulfurization efficiency and the denitration efficiency respectively reach more than 80 percent and more than 98 percent, and the continuous operation can be realized.
Owner:HUAZHONG AGRI UNIV

Rainwater-controlled sewage discharge device

The invention belongs to sewage treatment technology and relates to a rainwater-controlled sewage discharge device for domestic sewage discharge treatment. The rainwater-controlled sewage discharge device comprises a sewage pipe, a rainwater collecting box and a total water discharge pipe, wherein a regulation and storage pool is arranged between a water outlet of the sewage pipe and the total water discharge pipe; the water outlet of the sewage pipe is positioned above an opening of the regulation and storage pool; a water outlet at the bottom of the regulation and storage pool is connected with the total water discharge pipe; the bottom of the rainwater collecting box is connected with a control water pipe; the control water pipe is used for controlling to open or close a first pressure control valve through a water pipe; when water is stored in the rainwater collecting box and the control water pipe, the first pressure control valve is closed by the water pressure; the first pressure control valve is positioned between the water outlet of the regulation and storage pool and the total water discharge pipe; the middle section of the control water pipe is connected with a rainwater pipe through a section of branched water pipe; and the tail end of the rainwater pipe is directly connected with the total water discharge pipe. The rainwater-controlled sewage discharge device can discharge the sewage and the rainwater respectively, can effectively treat production sewage and can avoid pollution caused by mixed discharge.
Owner:江苏中天环境工程有限公司

Cell-type car-type heating stove highly effective combustion system

The invention relates to an efficient combustion system of a chamber and car bottom heating furnace, belonging to the energy-saving and environment-protecting heating furnace technique field. The invention comprises a plurality of pairs of heat accumulating left and right sides combustion nozzles which are arranged on the two sides of the furnace top of the heating furnace, wherein, the heat accumulating left side combustion nozzles are connected with a smoke pumping main and an air main through a left side reversing valve and are connected with a gas main through a left side gas quick-switch valve; the heat accumulating right side combustion nozzles are connected with the smoke pumping main and the air main through a right side reversing valve and are connected with the gas main through a right side gas quick-switch valve; the air main is connected with a combustion air fan; the smoke pumping main is connected with a smoking machine. The efficient combustion system forms the high kinetic energy U-shaped air steam inside the furnace, thereby improving the uniformity of the furnace temperature; all the flue gas generated by the combustion of half of the combustion nozzles of the whole furnace is discharged from the other half of the combustion nozzles, thereby abolishing the tail gas duct with high energy consumption and complicated structure of the prior chamber and car bottom heating furnace; the energy consumption is reduced by 40 to 60 percent and the furnace output and the blank heating quality are improved.
Owner:WUXI LONGSHAN TECH

Heat supply network balancing system

The invention discloses a heat supply network balancing system. The heat supply network balancing system comprises a water inlet pipe and a water return pipe; the water inlet pipe is provided with a filter, a water pump and a water inlet temperature sensor at a user side in sequence according to the water flow direction; the water return pipe is provided with a water return temperature sensor at the user side, a manual balance valve and a pressure difference control valve with a flow rate adjusting function in sequence according to the water flow direction; a check valve is arranged between the water inlet pipe and water return pipe; the water pump is provided with a transducer; the pressure difference control valve, water inlet temperature sensor at the user side, water return temperature sensor at the user side and outdoor temperature sensor are connected with a controller with a weather compensation function through circuits; each of the water inlet pipe and water return pipe is provided with a thermometer and a pressure gauge, and shut-off valves are arranged at two ends of each of the water inlet pipe and water return pipe. The heat supply network balancing system realizes the variable-flow rate intelligent heat usage of a secondary network of the heat supply network, the return water at the user side is mixed with the primary side inlet water of the system, the return water energy of the user side is completely used, the comfort is improved for the user, and the energy conservation and environment protection are realized.
Owner:董全意

Rapid annealing method for ohmic contact of metal and silicon carbide

The invention provides a rapid annealing method for ohmic contact of metal and silicon carbide, which comprises the steps of (1) placing SiC wafers on a Si sheet tray, then arranging the Si sheet tray on a rapid thermal treatment device, and simultaneously filling the device with protection gas Ar; (2) performing a first temperature-rise period, and keeping the temperature; (3) performing a second temperature-rise period, and steadying the temperature; (4) performing a third temperature-rise period; (5) performing a fourth temperature-rise period, namely, annealing period; and (6) performing a temperature reducing period. The method has benefits as follows: the method is carried out in the commercial rapid thermal treatment device taking any light radiation as a heat source; and the silicon sheet used as the tray can adopt various standards of commercial polishing monocrystalline silicon sheets and has low cost. The annealing method can remove the moisture on the surface of the silicon carbide wafer and stabilize the temperature. On the premise of ensuring the control precision of the peak thermal treatment temperature, the heating rate is improved through changing the setting value. Finally, the annealed ohmic contact resistance is reduced; and the quality of the ohmic contact, the device reliability and the yield are improved.
Owner:NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD

Multifunctional wall cloth and manufacturing method thereof

The invention relates to a multifunctional wall cloth and a manufacturing method thereof. The multifunctional wall cloth is mainly used for solving the technical problems that the present decorative material only has a decorative effect and does not have functionality. The multifunctional wall cloth is characterized by comprising a decorative layer and a heat-insulating layer, wherein a bonding layer is arranged between the decorative layer and the heat-insulating layer; the decorative layer and the heat-insulating layer are integrally bound through the bonding layer; and the decorative layer is spun by using chemical fibers, cotton, flax and viscose. When the decorative layer is dyed, the following materials by weight percent are added into a dyestuff: 1-5% of nanometer silver antibiotic finishing agent, 3-10% of three-proofing additives, 25-35% of halogen-free fire retardants, 0.5-2% of antistatic agents and 1-8% of nanometer titanium dioxides; the materials are dried by using a 30 yards/hour molding machine and the drying temperature is at 180-230 DEG C; the heat-insulating layer is formed by spinning polypropylene fibers, viscose and three-dimensional crimp hollow fibers and 10-15g/m<2> cannabinol is sprayed on the surface of the heat-insulating layer; and then the decorative layer and the heat-insulating layer are fixedly bound through adhesive agents.
Owner:王华
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products