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15624results about How to "Guaranteed uniformity" patented technology

Substation secondary system operation and maintenance cloud platform

The invention discloses a substation secondary system operation and maintenance cloud platform, comprising in-place layers and a centralized control layer, which are configured to read data from a production management system directly to realize equipment management, operation management, fault handling, duty management and maintenance management. The in-place layers and the centralized control layer exchange power grid operation data by means of a dispatching data network, and exchange operation and maintenance management data by means of an integrated data network; each in-place layer comprises a substation control layer, a spacing layer and a process layer; each process layer comprises all primary equipment of a substation, and transmits information of the primary equipment of the present layer to the substation control layer by means of corresponding detection equipment; and each spacing layer comprises all secondary equipment of the substation, and transmits information of the primary equipment of the present layer to the substation control layer by means of corresponding detection equipment. The substation secondary system operation and maintenance cloud platform integrates the cloud computing technology, the big data technology, the Internet of things technology and the mobile internet technology, unifies data interfaces and dispatching among different secondary operation and maintenance systems in safety regions, and realizes good management of operation and maintenance information.
Owner:STATE GRID CORP OF CHINA +1

Fluid-solid-heat coupling triaxial servo percolation device for gas-contained coal

The invention discloses a fluid-solid-heat coupling triaxial servo percolation device for gas-contained coal, comprising a lifting stand, a hydraulic servo control system, an axial loading device mounted at the top of the lifting stand and a triaxial pressure chamber connected with the lower end of the axial loading device. A thermostatic water tank is arranged below the triaxial pressure chamber; a movable worktable is arranged above the thermostatic water tank; the lower end of the triaxial pressure chamber is arranged on the movable worktable; heating tubes are arranged in the thermostatic water tank; and a water inlet valve, a water drain valve and a water-bath circulating water pump are arranged outside the thermostatic water tank and are communicated with the thermostatic water tank. In the hydraulic servo control system, an axial compression loading oil pump is communicated with an oil inlet and an oil outlet by a pipeline, and a peripheral compression loading oil pump is communicated with an oil intake/drain hole by a pipeline. The fluid-solid-heat coupling triaxial servo percolation device for gas-contained coal can carry out the research of gas-contained coal percolation tests in states, such as different terrestrial stresses, different gas pressures, different temperatures, and the like and the distortion and failure characteristics of the gas-contained coal in a percolation process.
Owner:CHONGQING UNIV

Double-inlet double-outlet steel ball coal mill straight blowing type milling system optimized control method

The invention discloses an optimum dual-inlet and dual-outlet steel ball coal grinding machine direct-blow type powder-preparation control method. The method obtains the material position of the coal grinding machine after carrying out soft-measurement processing by collecting the noise material position of the coal grinding machine, the material position of pressure difference, the current of the coal grinding machine, one-time air quantity, one-time opening of the hot wind door and the cold wind door of an inlet, inlet temperature and outlet temperature; the control comprises material position control, air quantity capacity control, bypass air quantity control and the temperature control of the inlet and the outlet; the material position is optimized and the best material position of the coal grinding machine is searched online so as to ensure the combustion safety of the boiler and coal powder supply quantity when the load of the boiler is adjusted. The boiler combustion is optimized: according to the boiler technology, the load and the running working conditions, the powder supply quantity and the ventilation quantity of each coal grinding machine are optimized and the combustion efficiency of the boiler is improved. Malfunction diagnosis, running evaluation and analysis are carried out to the system and reasonable suggestions are provided so as to ensure the system to run continuously, stably, safely and economically; the optimum dual-inlet and dual-outlet steel ball coal grinding machine direct-blow type powder-preparation control method is widely applied to the dual-inlet and dual-outlet steel ball coal grinding machine direct-blow type powder-preparation system or industrial similar systems in other industries.
Owner:西安蓝海机械仪表成套有限责任公司

Radiating and cooling device for power battery

The invention relates to a radiating and cooling device for a power battery. An aluminum hollow cold plate shell is in the form of a radiating fin; the inside of the shell is hollow; a plurality of groove spaces are formed on the aluminum shell; power batteries can be embedded into grooves; the aluminum hollow cold plate shell is filled with a phase change material; radiating fins are arranged on an aluminum hollow cold plate shell bottom plate; a snakelike copper tube is arranged at the bottom of an aluminum shell cavity, and is contacted with the phase change material; a liquid cooling working medium is introduced into the snakelike copper tube; the snakelike copper tube, a pump and an external heat exchanger are connected in series, so that an active liquid cooling system is formed; a temperature sensor is arranged on the surface of the power battery; and a temperature switch is connected in series with a pump body power supply. The flow of the cooling working medium can be adjusted according to different requirements of battery temperature control; the using amount of a metal is reduced by adding the phase change material on the premise of ensuring the battery radiating effect, so that the cost of a battery radiating device is reduced effectively; and the requirements of different power batteries are met.
Owner:SHANGHAI UNIVERSITY OF ELECTRIC POWER

Device detection and fault early warning system and method in cloud computing environment

InactiveCN107491375AReduce in quantityImprove the efficiency of fault warningHardware monitoringData switching networksTime informationDevice type
The invention discloses a device detection and early fault warning system and method in a cloud computing environment. The system comprises a real-time monitoring module, a monitoring information presentation module, an early fault warning module and a warning module. The method comprises the following steps that firstly, real-time monitoring is conducted, wherein real-time information collection is conducted, and the real-time information is aggregated and presented; secondly, early fault warning analysis is conducted, wherein the collected information is subjected to early fault warning analysis; thirdly, a warning mechanism is triggered, wherein early warning information is classified. The device detection and early fault warning system and method can support protocols, autonomously and controllably select detecting indexes, adapt to different monitoring modes, customizing warning triggering conditions, extending the number of monitoring devices on a large scale and the like according to the types and the number of devices in a cloud computing data center, collection, monitoring, warning and fault positioning can be intensively conducted in a unified system, and the operation and maintenance efficiency is effectively improved.
Owner:INFORMATION COMM COMPANY STATE GRID SHANDONG ELECTRIC POWER +1

Organic electroluminescent display (OLED), manufacturing method thereof and display device

The invention discloses an organic electroluminescent display (OLED), a manufacturing method of the organic electroluminescent display (OLED) and a display device. A pixel defining layer arranged in the organic electroluminescent display (OLED) is provided with opening areas corresponding to pixel areas of the OLED, an opening of each opening area is larger than the bottom face of the opening area, and thus the problem that a cathode may break later can be avoided; because the upper surface of the pixel defining layer is made from lyophobic material, and luminescent material with which the pixel defining layer is coated later cannot remain on the upper surface of the pixel defining layer easily, the problem that colors of the adjacent pixel areas are mixed can be avoided; meanwhile, the inclined faces of the corresponding opening areas of the pixel defining layer are made from lyophilic material so that it can be guaranteed that the opening areas are evenly filled with the luminescent material with which the pixel defining layer is coated later. Therefore, according to the OLED, the uniformity of a film layer formed later on the pixel defining layer can be guaranteed, and the luminescence property of the OLED is improved.
Owner:BOE TECH GRP CO LTD

Articulated anchor and prestress tensioning method of high strength fibre composite sheet

An articulated anchor and a prestress tensioning method of high strength fibre composite sheet relate to an anchor holder used to perform prestress tensioning to the high strength fibre composite material of the enhancement or reinforcement engineering structure and a method thereof. The articulated anchor of the invention comprises an anchor head and a compression and locking device, and the articulated anchor is characterized in that the anchor head contains a raised head anchor and a concave block. The method of the invention is that the articulated anchor is used to clamp and anchor the two ends of FRP sheet, a jack is used to apply a tension on the concave block and the concave block pushes the raised head anchor to perform prestress tensioning to FRP sheet. The articulated anchor of the invention has simple structure, convenient installation and low cost; and the method of the invention is simple, intuitive and practical, and can ensure the tensioning uniformity of FRP sheet, made full use of the intensity of FRP sheet and effectively increase the bearing capacity of the engineering structure. The articulated anchor of the invention can be widely used to enhance or reinforce the large engineering structures such as bridges or buildings and especially to perform external prestressing reinforcement to longspan concrete beams, longspan concrete slabs and the like.
Owner:卓清

Rock-soil body temperature-control dynamic characteristic test system and test method

The invention discloses a rock-soil body temperature-control dynamic characteristic test system and method, is characterized in that the system includes a dynamic triaxial pressure chamber and a temperature control device; the dynamic triaxial pressure chamber comprises a pressure chamber cylinder body, a piston rod and an upper dowel bar; a sample is arranged between the lower end of the upper dowel bar and the upper end of the piston rod; the dynamic triaxial pressure chamber also includes a pressure sensor, an axial displacement sensor, a deformation sensor, a confining pressure sensor, a lateral displacement sensor and a pore pressure sensor; the temperature control device includes a temperature sensor, a temperature controller and an arc plate type heater symmetrically coating the outer wall of the pressure chamber cylinder body. The temperature-control dynamic characteristic test method mainly includes installing the sample, setting the temperature control device, carrying out drainage consolidation of the sample, applying dynamic/static stress, and completing a temperature-control dynamic/static triaxial test, to determine the cumulative plastic strain, dynamic damping ratio, dynamic elastic modulus and other indexes of a rock-soil body under different temperatures. The system and the method have the advantages of uniform heating temperature, short heating time and low cost, and can accurately control the temperature in the pressure chamber.
Owner:NINGBO UNIV

Electromagnetic shielding conformal optical window with longitude and latitude-shaped mesh structure

The invention provides an electromagnetic shielding conformal optical window with a longitude and latitude-shaped mesh structure, which belongs to the technical field of electromagnetic shielding of optical transparent pieces. The electromagnetic shielding conformal optical window comprises a conformal optical window and is characterized in that: (1) a longitude and latitude-shaped metal mesh is manufactured on the inner side surface of the conformal optical window shell; and the longitude and latitude-shaped metal mesh covers the whole inner side surface of the conformal optical window shell; or (2) a longitude and latitude-shaped metal mesh and a conformal optical window inner shell are manufactured on the inner surface of the conformal optical window shell from outside to inside in turn; the longitude and latitude-shaped metal mesh covers the whole inner surface of the conformal optical window shell and outer surface of the conformal optical window inner shell; the latitude-shaped metal mesh consists of metal longitudes and metal latitudes; the metal latitudes are uniformly arranged in an equivalent centre angle along a circumferential direction; the metal longitudes are arranged at equal intervals according to a metal mesh cycle along a generatrix direction; and the metal longitudes and the metal latitudes are electrically connected with one another. The electromagnetic shielding conformal optical window with the longitude and latitude-shaped mesh structure is suitable for electromagnetic shielding technology of military or civil conformal optical windows for remote measuring and sensing, medical diagnosis, secret communication, aerospace equipment and the like.
Owner:HARBIN INST OF TECH

Laser-induction hybrid melting direct forming method and device

The invention discloses a laser-induction hybrid melting direct forming method and device. The laser-induction hybrid melting direct forming method comprises the following steps of: generating a three-dimensional model of a part through CAD (Computer-Aided Design) software, and then slicing the three-dimensional model and generating a G code to drive a numerical control system and a base body to move; and melting synchronously fed metal or metal/ceramic hybrid powder through a high-power laser beam and an induction heat source, and depositing the three-dimensional part in a designed shape layer by layer, wherein a temperature controller is used for monitoring and controlling the temperature of the base body in the processing process. The device for realizing the laser-induction hybrid melting direct forming method comprises a laser, a light path system, an induction heating and temperature control system, a powder feed system and the numerical control system. The device can be used for directly generating large and medium size three-dimensional parts on various metal base bodies, has the advantages of high processing efficiency, compact part structure, fine crystalline grain, excellent mechanical property, less residual stress without deformation or cracking phenomenon, high processing flexibility without tools and moulds, high material utilization ratio, cleanness without pollution and capability of designing the components of a metal-ceramic hybrid layer as required and even changing the components in a gradient manner.
Owner:HUAZHONG UNIV OF SCI & TECH

Thermochemistry mechanical polishing method of sapphire substrate material and polishing solution

The invention relates to a thermochemistry mechanical polishing method of a sapphire substrate material; a polishing disk is heated in the polishing process; the temperature of the polishing disk is 30 DEG C-100 DEG C; a polishing solution adopted in the polishing method comprises a compound abrasive material, a pH compound conditioning agent, a surface active agent, a dispersing agent and deionized water, wherein the compound abrasive material is formed by mixing particles of a hard abrasive material and a soft abrasive material; the pH compound conditioning agent comprises organic strong base and organic weak base; and the pH value of the polishing solution is 8-13. The thermochemistry mechanical polishing method has the advantages: in the polishing process, the cast ion polishing disk is heated to promote a reaction rate between the polishing solution and the sapphire substrate material, thereby improving the polishing efficiency; problems such as surface scratch, subsurface cracks and the like can be avoided by using the compound abrasive material in the polishing solution so as to obtain surface characteristics of high quality and high evenness; meanwhile, the polishing efficiency is considered; and the polishing solution also has the advantages that the stability is high, equipment is not corroded, washing is easy and the like.
Owner:TIANJIN UNIVERSITY OF TECHNOLOGY

Process technique for threshing and redrying tobacco

InactiveCN101181093ASolve the problem of water lossSolve environmental dustTobacco preparationFluePre treatment
The invention relates to a processing technology of defoliating and redrying tobacco leaves. The pretreatment stage adopts a method that evenly distributing, merging and threshing according to the same type, grade and quality in a certain ratio and a mode of grouping process. A few electronic scales are added in the pretreatment stage, and the mode of assembly line work in section is adopted; the continuous production mode has the steps of laying, separating, parting and dividing and precise distribution; a humidifying and moisture-preserving device is added in the pretreatment stage; parting and dividing technique is adopted; premix counters of tobacco which are top to top are added; and grouping process is adopted; the invention has the advantages of 1. having flexible processing method, being convenient for application and being capable of quick joint with cigarette brand production technology; 2. realizing a mode of merging and defoliating electronic scale and precise distribution technology; 3. realizing the continuous production mode of laying, separating, parting and dividing and precise distribution; 4. effectively solving the problems of water-dissipation and environment dust suppression of initial flue-cured tobacco; 5. ensuring the uniformity of internal quality of the same batch of tobacco; 6. enhancing the use value of tobacco material; 7. increasing the quality in control precision and level of tobacco products.
Owner:HONGTA TOBACCO GRP

Display device, pixel driving circuit and driving method of pixel driving circuit

The invention discloses a display device, a pixel driving circuit and a driving method of the pixel driving circuit. The pixel driving circuit comprises an organic light-emitting diode, first to fourth switch elements, a storage capacitor and a driving transistor, wherein the first switch element is used for responding to a threshold compensation signal so as to apply a driving voltage and the threshold voltage of the transistor to a first end of the storage capacitor; the second switch element is used for responding to a threshold compensation signal so as to apply the driving voltage to a second end of the storage capacitor; the third switch element is used for responding to a first scanning signal so as to apply a data signal to the second end of the storage capacitor; a grid electrode of the driving transistor is connected with the second end of the storage capacitor, a source electrode of the driving transistor is connected with the driving voltage, and a drain electrode of the driving transistor is connected with the fourth switch element; the fourth switch element is used for responding to a light-emitting control signal so as to apply the driving current output by the drain electrode of the driving transistor to the organic light-emitting diode to emit light. According to the invention, the luminance of the OLED display panel is relatively uniform.
Owner:EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD

Image correction method based on LED splicing display screen and image sensor

The embodiment of the invention discloses an image correction method based on an LED splicing display screen and an image sensor. Therefore, picture display uniformity is improved and a display effect is enhanced. The method comprises: obtaining an image of an LED splicing display screen; according to a pixel point coordinate position of a pixel point display template, obtaining a gray scale value and a chromaticity coordinate value of a pixel point corresponding to the pixel point coordinate position from the image one by one; calculating a gray scale compensation value of the pixel point based on the gray scale value and calculating a chromaticity coordinate compensation value of the pixel point based on the chromaticity coordinate value; generating a gray scale compensation model based on the gray scale compensation value and generating a chromaticity compensation model based on the chromaticity coordinate compensation value; and sending the gray scale compensation model and the chromaticity compensation model to an LED display control system, thereby enabling the LED display control system to carry out brightness and chromaticity correction on a display image of the LED splicing display screen based on the gray scale compensation model and the chromaticity compensation model.
Owner:GUANGDONG VTRON TECH CO LTD

High-precision precise workpiece detecting-sorting machine

The invention discloses a high-precision precise workpiece detecting-sorting machine. The machine comprises a first stander and a second stander, wherein a loading mechanism is arranged on the first stander; a first metal rotating disc, a second transparent rotating disc, a first conveying mechanism and an electric control unit are arranged on the second stander, the first metal rotating disc and the second transparent rotating disc are respectively driven by power devices, and the first conveying mechanism is used for conveying a workpiece from the loading mechanism to the first rotating disc; a first sensor, a longitudinal surface size detection mechanism, a second conveying mechanism and a first receiving mechanism are circumferentially arranged on the first rotating disc, and the second conveying mechanism is used for conveying the workpiece on the first rotating disc to the second rotating disc; a second sensor, a transverse surface size detection mechanism, an appearance detection mechanism and a second receiving mechanism are circumferentially arranged on the second rotating disc; the electric control unit is used for coordinating and controlling the action of each component. According to the high-precision precise workpiece detecting-sorting machine, the mechanical production line automatic detection is realized, and the first rotating disc can be subjected to surface polishing in a later machining period, so that the longitudinal surface size detection precision is improved, and the detection and sorting efficiencies are further increased; meanwhile, as workpieces with different shapes can be detected, the universality is enhanced.
Owner:WEIFANG LOKOMO PRECISION IND
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