32results about How to "Solve flow problems" patented technology

The method raises accuracy of HFC network topology greatly, and generates HFC network topological graph rapidly and automatically. Each HFC network device possesses a specific address. Network management computer at front end generates topological data through following steps: computer at front end sends command of generating data to specific device; receiving the command, the specified device sends local topological data to down going transmission channels according to broadcasting mode, and meanwhile sending the data to up going channel; all devices in lower level store address data of device in upper level into local network table; the said computer at front end takes back all network topological table of HFC network devices one by one according to unicast mode; through simple process, the computer at front end forms whole HFC network topology of cable TV.

The invention provides an electrical heating continuous coal pyrogenation coking furnace which includes a furnace body, the furnace body is equipped with a hopper, a pre-heating segment, an electrical heating main body segment, a gas cycle cooling segment and a coke discharge segment orderly from upper to down; control valves are set among the hopper, the pre-heating segment, the electrical heating main body segment, the gas cycle cooling segment and the coke discharge segment. The coking furnace has advantages as follows: 1. the furnace can control rolling speed and heating effect of mouldedcoal efficiently in rolling process of coking coal; 2. the furnace solves temperature and environment atmosphere required by the coal pyrogenation coking; 3. the furnace changes traditional coke cooling method by water into inert gas cycle for realizing heat energy utilizing fully, is energy-saving and environmental-friendly; 4. the furnace reduces raw material cost, increases coke quality and reduces coke foam and coke particle generating; 5. the furnace can replace full coal gas by electrical heating which can solve smoke pollution efficiently.

The invention discloses a real-time monitoring system and method for visualizing two-dimensional fracture network rock mass seepage dynamics; laying a two-dimensional fracture network rock mass in the second experimental area, and covering the second sealing cover; realizing overall hydraulic loading or partial hydraulic loading according to test requirements Hydraulic loading; connect the water volume monitoring device with the computer to monitor the water volume in real time; color the water body, carry out overall hydraulic loading or local hydraulic loading on the water body according to the test requirements, and observe the flow path of the water body in the two-dimensional fracture network under different conditions and Changes in the fracture network; According to the water volume and the final total water flow of the water body from different fracture paths recorded by the water volume monitoring device at different times, the flow law of the water body in the two-dimensional fracture network is obtained. It can be used to simulate different hydraulic loading conditions, observe the flow path of water in the two-dimensional fracture network and the change of water volume in different paths in real time, reveal the flow law of water in the two-dimensional fracture network, and is beneficial to the study of the flow law of groundwater in actual engineering .

The invention discloses a method and device for sorting information points for operation and maintenance. The method includes the following steps: obtaining information point data, calculating the logical connection degree of a tree diagram, and generating a logic diagram of information points; grabbing switch data, calculating The actual connection degree of the information point generates an actual connection diagram; obtains the real-time data and bandwidth demand data of various business application software related to the information point, and combines the calculated logical connection degree and actual connection degree to generate a physical diagram ; At the same time, the corresponding device is disclosed. The present invention greatly shortens the fault location time required for faults encountered in operation and maintenance, systematically sorts out and solves the problem of information flow along the flow direction of each device, and sorts the importance of nodes to guide us to determine the daily operation The location of key equipment for maintenance inspections, so as to formulate a lean operation and maintenance plan.

The invention belongs to the technical field of axial compressors, and relates to an aerodynamic design method of a subsonic adsorption type axial compressor, in order to solve the problems of increasing of blade rotating angles of a subsonic axial compressor and boundary layer separated in a moving blade during stage load increasing as well as the problems of suction pipeline layout difficulty, blade strength reduction and the like caused by boundary layer suction in the moving blade. On the premise of unchanging an inlet velocity triangle, with design stage load coefficient increasing gradually and exceeding a conventional design value, outlet axial velocity of the moving blade is increased greatly so as to reduce diffusion factors in the moving blade, so that efficient flow of the moving blade is guaranteed; and boundary layer suction is utilized for achieving internal flow of a fixed blade. As boundary layer suction is performed in the moving blade as well as the fixed blade, problems of poor blade strength of a rotatable part and difficulty in suction structure design are solved effectively; and as compared with a tandem cascade technique, the aerodynamic design method has the advantages that blades can be decreased, and accordingly size and weight of an engine are reduced. The method can be applied to aerodynamic design of aero-engines with high thrust-weight ratio.

The invention relates to an attendance system based on gesture recognition, the attendance system includes: a monitoring module, the monitoring module is composed of one or more cameras, and is used to identify employees in the area to be monitored; a gesture recognition module, the gesture recognition The module is used to perform gesture recognition on the employee group; the determination module is used to perform gesture recognition according to different gestures of individual employees, and determine the personal information of the corresponding employee on duty. This application solves the problem of cheating existing in employee card attendance, fingerprint attendance, and facial recognition attendance during employee attendance checks, reduces queuing time, and improves attendance efficiency.

The invention relates to a carbon-based phase-change energy storage material and a preparation method thereof. The preparation method comprises the following steps: taking lithium carbonate and potassium nitrate as raw materials, and heating after uniformly mixing, thus obtaining mixed molten salt of lithium carbonate-potassium nitrate; adding potassium chloride in the mixed molten salt, and heating, thus obtaining low-melting point eutectic molten salt; grinding the eutectic molten salt into powder, adding graphene, and uniformly mixing, thus obtaining graphene / eutectic molten salt powder; uniformly mixing the graphene / eutectic molten salt powder with an expansible graphite matrix, thus obtaining graphene / mixed molten salt powder; carrying out cold-press molding on the graphene / mixed molten salt powder, thus obtaining a sample in regular shape; drying the sample, cooling to room temperature, and patching, thus obtaining the carbon-based phase-change energy storage material. Accordingto the carbon-based phase-change energy storage material disclosed by the invention, the graphene is added in an eutectic salt medium, the heat conductivity coefficient of a phase-change medium is increased on the premise that higher potential heat of the eutectic molten salt is reserved, and excellent heat storage efficiency is obtained.