97results about How to "Realize the design" patented technology

The invention discloses a PSO-based multi-conditional constraint gas storage injection-production scheme optimization method and computer equipment, and relates to the technical field of energy storage, and the PSO-based multi-conditional constraint gas storage injection-production scheme optimization method mainly comprises the following steps: according to core data, logging data, seismic data and static fluid data of a gas storage, obtaining a PSO-based multi-conditional constraint gas storage injection-production scheme; a gas storage three-dimensional geologic model and a gas storage fluid model are constructed, fitting and inversion are performed by using a numerical simulation method and historical production data, a gas storage injection-production well is selected as an injection-production optimization object, an optimization model, a gas storage operation objective function and a multi-constraint condition are constructed, and an optimal injection-production allocation scheme is obtained by using a particle swarm algorithm. According to the multi-condition constraint gas storage injection-production scheme optimization method based on PSO and the computer equipment, the single-well injection-production gas quantity can be optimized, the gas storage production allocation scheme design is achieved, and long-term stable and safe operation of the gas storage is guaranteed.

The invention belongs to the technical field of data processing, and provides an all-weather RAG intelligent agent automatic newspaper design method and device and electronic equipment. A preset newspaper design generation model in the method is obtained by taking a personalized vector database configured in a private domain container as a training set and training a basic LLM large model and a basic text graph model based on a public domain. The personalized vector database at least stores a propagation design reading template conforming to the content of the user newspaper, after the newspaper category selected by the user and the page information input by the user are obtained, article semantics obtained by the page information can be understood, a multi-layer tree structure is constructed through an RAPTOR tree, and the content of the user newspaper can be obtained. And inputting the layout information into the multi-layer tree structure, and automatically designing a newspaper generation layout based on vectorization, clustering and thinking chain Agent design and abstract matched with the output layout information, thereby realizing all-weather automatic newspaper design.

The invention discloses a large-model-driven intelligent biosynthesis system and method, and the system employs a centralized multi-large-model intelligent agent architecture, and executes a task through a modularized intelligent agent. The system is composed of a man-machine cooperation interaction module, a global task management module, a general information retrieval module, a reverse path planning module, a protease modification module, a metabolic pathway optimization module, a wet experiment tool execution module and a code execution module. Each module integrates different tools and data sources for specific task fields. By means of the system, complex biosynthesis experiment design, planning and execution can be completed autonomously, functional modules and wet experiment feedback can be dynamically adapted, and the flexibility of experiment planning is ensured.

The invention discloses a cab. The cab comprises a driving compartment. The driving compartment body comprises a front portion and side portions located on the two sides of the front portion. The maximum size of the driving compartment in the X direction is L4, and the value range of the L4 meets the condition that the L4 is larger than or equal to 1550 mm and smaller than or equal to 1950 mm. The front part comprises a windshield part, the windshield part is obliquely arranged relative to the vertical plane, the inclination angle is alpha 1, and the value range of alpha 1 meets the condition that alpha 1 is larger than or equal to 15 degrees and smaller than or equal to 25 degrees. The front portion further comprises a first area portion and a second area portion which are located below the windshield portion in the Z direction, and the second area portion is located between the first area portion and the windshield portion and connected with the windshield portion. And in the Z direction, the second area part is obliquely arranged relative to the vertical plane, the inclination angle is alpha 2, and the difference value between the inclination angle alpha 1 of the windshield part relative to the vertical plane and the inclination angle alpha 2 of the second area part relative to the vertical plane meets the condition that alpha 1-alpha 2 is larger than or equal to 0 degree and smaller than or equal to 5 degrees. According to the cab in the embodiment of the invention, the front part of the cab can form a streamline cab structure with low wind resistance in a limited space, and the design of the cab with low wind resistance is realized.

The invention discloses an underground expressway reinforcement learning intelligent line selection method based on a GIS and an InSAR, and the method comprises the steps: providing urban environment multi-source data based on the GIS and the InSAR, building a rasterized observation space, building an initial linear continuous line space, and jointly building a line selection space of a reinforcement learning model; the strategy network of the reinforcement learning model receives parameter information of the line selection space and outputs linear parameters; the linetype builder corrects linetype parameters and updates the line selection space; the multi-index evaluation model outputs reward and punishment values according to the parameter information of the new line selection space, a value network of the reinforcement learning model receives the reward and punishment values, calculates a gradient for updating, and transmits a gradient updating strategy model; circulating until a round of line selection is completed, and calculating an accumulated reward value; and when the accumulated average reward value does not reach the optimization target, circulating until the optimization target is reached, and finding the optimal design. The method has the advantage of being beneficial to improving the efficiency and accuracy of underground road design.

The invention discloses a garden landscape simulation method based on a virtual reality technology and three-dimensional visualization, and the method comprises the steps: obtaining the three-dimensional point cloud data of a garden terrain, and generating a three-dimensional grid model; calculating a gradient value of each block grid of the three-dimensional grid model, generating a gradient matrix of the three-dimensional grid model, and clustering the block grids belonging to the same gradient value interval into similar sub-blocks; sorting from small to large based on the terrain slope intervals corresponding to the subblocks of the same type, selecting adaptive plant species according to the illumination conditions of the sorted terrains, and predicting the photosynthetic rate values of the plant species based on a photosynthetic rate prediction model; calculating the number of plants planted in the terrain according to the area of the terrain corresponding to each sub-block and the photosynthetic rate value of the plants in the terrain; and carrying out simulation planting on the three-dimensional grid model, and carrying out garden landscape virtual reality display on the three-dimensional grid model based on a virtual reality technology. According to the method, targeted design can be carried out on different slope areas of the garden landscape.

The invention discloses an SVG converter valve parameter configuration method and device. The method comprises the steps that the capacity and rated working voltage of a converter valve are determined according to the basic function requirement of an SVG; according to the capacity and the rated working voltage of the converter valve, determining the type and the rated working voltage of each sub-module, and combining third harmonic injection and harmonic suppression to determine the number of the sub-modules; determining the capacitance value of the sub-module and the parameters of the bridge arm reactor according to the volatility of the capacitance voltage of the sub-module in the steady state and the harmonic suppression requirement; according to overvoltage and overcurrent characteristics of the SVG, the number of sub-modules, capacitance values and bridge arm reactor parameters are optimized; and according to overvoltage characteristics of the SVG after parameter optimization, determining lightning arrester configuration, and obtaining converter valve parameter configuration of the SVG. The method is suitable for extra-high voltage SLCC direct current power transmission system design, and the system design efficiency and standardization can be effectively improved.

The invention relates to the technical field of heat storage and energy conservation, and provides a moving bed high-temperature particle flow and heat transfer characteristic simulation and prediction method and system based on deep learning and electronic equipment. The method comprises the steps that high-temperature particle flow characteristic numerical simulation is conducted, and a three-dimensional moving bed high-temperature particle flow numerical model is established; simulating association of a bed structure, particle properties and particle accumulation and flow pattern rules, and establishing a particle distribution regulation and control strategy; performing numerical simulation on heat transfer characteristics of high-temperature particles, establishing association between particle flow characteristics and a temperature field, simulating a gas-solid two-phase composite heat transfer process of the particles, and establishing a temperature field control strategy; intelligent prediction of particle distribution and a temperature field is carried out, intelligent prediction of particle distribution and the temperature field at a specific moment is realized based on deep learning, and a regulation strategy based on numerical simulation is optimized. The particle flow and heat exchange characteristics of the moving bed are clarified, a theoretical support and a technical solution are provided for improving the waste heat recovery efficiency of the blast furnace slag, and the energy utilization rate can be increased.

The invention belongs to the technical field of hard alloy materials, and particularly relates to a medium-entropy hard alloy cutter material and a preparation method and application thereof. The medium-entropy hard alloy cutter material comprises medium-entropy carbides and medium-entropy alloys, the medium-entropy carbides are selected from WC, TaC and NbC or TaC, TiC and ZrC, and the materials bring excellent high-temperature hardness and wear resistance to the cutter material due to unique component design and structural characteristics of the materials; the medium-entropy alloy is selected from Fe powder, Co powder and Ni powder or Co powder, Ni powder and Cr powder, and the alloy has excellent comprehensive mechanical properties, so that the toughness and the overall strength of the cutter are effectively improved, and the stability and the durability of the cutter in the high-speed cutting process are ensured. According to the medium-entropy hard alloy cutter material disclosed by the invention, by virtue of the unique material composition and the preparation process, high hardness, excellent wear resistance, high cutting speed and high cutting precision are maintained at a high temperature. And meanwhile, the reliability and the service life of the cutter under complex machining conditions are ensured due to the excellent toughness of the cutter.

The present invention discloses a method and device for configuring parameters of an SVG converter valve, the method comprising: determining the capacity and rated working voltage of the converter valve according to the basic functional requirements of the SVG; determining the type and rated working voltage of the submodule according to the capacity and rated working voltage of the converter valve, and determining the number of submodules in combination with third harmonic injection and harmonic suppression; determining the submodule capacitance value and bridge arm reactor parameters according to the volatility of the submodule capacitor voltage and the harmonic suppression requirements in a steady state; optimizing the number of submodules, capacitance value and bridge arm reactor parameters according to the overvoltage and overcurrent characteristics of the SVG; determining the arrester configuration according to the overvoltage characteristics of the SVG after parameter optimization, and obtaining the converter valve parameter configuration of the SVG. The present invention is applicable to the design of an ultra-high voltage SLCC direct current transmission system, and can effectively improve the efficiency and standardization of system design.

The utility model discloses a uniform heating type injection molding nozzle which comprises a nozzle body and a nozzle tip arranged in the nozzle body, and further comprises a heater arranged on the nozzle body in a sleeving manner, and the heater comprises a heat conduction sleeve and a graphene heating layer wrapped on the heat conduction sleeve; the graphene heating layer is provided with a pair of first contacts which extend in the radial direction of the graphene heating layer and protrude out of a body of the graphene heating layer, and the first contacts abut against second contacts arranged on a pair of wires of an external power source to be used for heating the graphene heating layer. According to the heater, electric connection is achieved in a contact mode, disassembly and assembly are convenient, the heating mode is optimized into a surface heating mode, better heating uniformity is achieved, needed heating power is reduced, and the transverse occupied space is saved through the small wall thickness.

The invention provides a polluted site earthwork intelligent allocation method and management system, and the method comprises the steps: obtaining the information of a polluted site, and determining an excavation region and a temporary storage region; determining an earthwork transportation route based on the position information of the excavation area and the temporary storage area; the excavation area at least comprises a first pollution type soil area and a first clean soil area, the temporary storage area at least comprises a first pollution type soil temporary storage area, and the first clean soil temporary storage area, the first pollution type soil area and the first pollution type soil temporary storage area are at least provided with a first earthwork transportation route; the first clean soil area and the first clean soil temporary storage area are at least provided with a second earthwork transportation route, and the first earthwork transportation route is different from the second earthwork transportation route. According to the intelligent allocation method for the earthwork in the contaminated site, regional division of the contaminated soil and the clean soil in the contaminated site can be realized, different transportation routes can be planned, cross contamination can be effectively prevented, and intelligent route design and execution can be realized.

The invention discloses a rail resonator design method and system based on a railway actual operation sensitive frequency band, and belongs to the technical field of railway design. Comprising the following steps: carrying out a disease characteristic test on an operation track according to an operation condition of a railway site to obtain vibration signals corresponding to different operation track diseases in an actual operation state; respectively inputting the vibration signals into a frequency domain feature recognition algorithm to obtain vibration dominant frequency information corresponding to different operation track diseases; optimizing the vibration dominant frequency information corresponding to the different operation track diseases through a fixed-point theory to obtain initial values corresponding to the different operation track diseases; and inputting the resonator design theory, the initial value corresponding to the operation track disease and the lowest amplitude in the vibration dominant frequency information into a multi-objective optimization algorithm, and calculating to obtain steel rail resonator design parameters. According to the method, the corresponding dynamic parameters of the steel rail dynamic resonator can be provided according to the main rail dynamic damage characteristics on site, and the vibration reduction effect on multiple rail damage main vibration frequency bands is achieved at the same time.

The server silencer is installed between a fan support and a hard disk backboard of the server, and the maximum structural size of the server silencer is smaller than or equal to the actual space between the fan support and the hard disk backboard. The minimum hole diameter of a silencer air duct of the server silencer is larger than or equal to the minimum air duct needed by a fan installed on a fan support, the server silencer is provided with an avoiding groove at the position corresponding to a connector and a cable of a hard disk backboard, and the server silencer is provided with a sound cavity at the position of the non-avoiding groove between the minimum hole diameter and the maximum structure size. The sound cavity is arranged at the position of a non-avoiding groove between the minimum aperture and the maximum structural size of the server silencer, so that the actual space between the fan bracket and the hard disk back plate can be fully utilized, the sound cavity is matched with the fan air duct, the sound cavity avoids the connector and the cable, the design of the sound cavity is ensured to meet the limited space, and the service life of the server silencer is prolonged. And the design of the sound cavity of the silencer in a limited space is realized.

The invention provides medium-entropy alloy composite powder for ultrahigh-speed laser cladding, a composite coating and application. The composite powder comprises medium-entropy alloy powder and Ni-coated WC powder. Wherein the mass fraction ratio of the medium-entropy alloy powder to the Ni-coated WC powder is (1-1.5): 1; the medium-entropy alloy powder comprises Fe, Cr, Ni and Ti, and the molar fraction ratio of Fe to Cr to Ni to Ti is 1: 1: 1: (0.4-0.75). The method has the technical effects that the ceramic strengthening phase is added into a medium-entropy alloy powder system, and in the ultra-high-speed laser cladding process, due to the fact that the laser absorptivity and the heat conductivity of Ni in the composite powder are low, the integrity of the WC ceramic phase is effectively protected, the wettability between the WC ceramic phase and a coating is improved through cladding of Ni, and the corrosion resistance of the WC ceramic phase is improved. And the binding force of a contact interface of the two is effectively enhanced, so that the preparation of the high-hardness and high-wear-resistance ceramic phase compounded medium-entropy alloy coating is realized.

The invention discloses a crystalline-amorphous composite self-supporting material which is prepared by the following steps: taking foamed nickel NF as a substrate, taking copper sulfate pentahydrate, urea and ammonium fluoride as raw materials for hydrothermal reaction, obtaining NF / Cu-Cu2O through a hydrothermal method, then taking nickel sulfate hexahydrate, cobalt sulfate heptahydrate, sodium citrate and thiourea as raw materials for electrodeposition, and preparing NF / Cu-CuS2 / NiCoS through an electrochemical deposition method; the NF is used as a self-supporting framework; cu-CuS2 is of a flaky hydrangea structure, the diameter of the Cu-CuS2 is 10 microns, NiCoS is of a nano spherical structure, and the diameter of the NiCoS is 10 nm; niCoS nanospheres grow on the sheet layer of the hydrangea structure; cu and CuS2 are in a crystalline state, and NiCoS is in an amorphous state. The preparation method comprises the following steps: 1, preparing NF / Cu-Cu2O; and 2, the NF / Cu-CuS2 / NiCoS is prepared. When the composite material is used as a hydrogen evolution catalyst material, the overpotential is 39-42 mV and the Tafel slope is 130-136 mV.dec-1 within the range of 0-1.2 V and when the current density is 10 mA. Cm <-2 >; and under the conditions that the current density is 10mA. Cm <-2 > and the cycle time is 24h, the current retention rate is 95-98%.

The invention discloses a two-dimensional field effect transistor with high-temperature thermal stability and a preparation method thereof, and mainly solves the problem that a two-dimensional material in an existing two-dimensional field effect transistor can be oxidized and decomposed at high temperature. The device comprises a substrate (1), an insulation packaging protection bottom layer (2), a two-dimensional material film layer (3), an insulation packaging protection top layer (6) and a gate electrode (7) from bottom to top, a source electrode (4) and a drain electrode (5) are arranged at the two ends of the film layer (3), and the packaging protection bottom layer and the packaging protection top layer both adopt any one or combination of more of aluminum nitride, hexagonal boron nitride or silicon nitride. Oxygen molecules in the air are prevented from diffusing to the two-dimensional material film layer for reaction at high temperature, so that the two-dimensional material film layer plays a role in high-temperature protection; the two-dimensional material film layer is made of molybdenum disulfide or tungsten disulfide or tungsten diselenide. The high temperature resistance of the two-dimensional field effect transistor is improved, oxygenolysis of the two-dimensional material at high temperature is avoided, and the two-dimensional field effect transistor can be used for aerospace, deep well drilling or other high-temperature environments.

The invention discloses a networked vehicle queue system model prediction control method based on data driving. The method comprises the steps that motion data sets of different vehicle types in a vehicle queue system are acquired; carrying out data driving modeling on the longitudinal dynamics of the vehicles in the vehicle queue by combining deep learning and a Koopman operator theory to obtain a data driving model; determining a communication topological structure and a system control target; based on the data driving model, a distributed model prediction control algorithm is designed, controller design is achieved, and finally the purpose that the vehicle queue system keeps stable driving of an expected target is achieved; according to the method, non-convex optimization problem solving caused by nonlinear model constraint is avoided.

The invention relates to a model prediction control method considering pumped storage and battery energy storage collaborative frequency modulation. The method comprises the following steps: constructing a dynamic model in which a hybrid pumped storage-battery energy storage system participates in secondary frequency modulation; according to the dynamic model of the hybrid pumped storage-battery energy storage system participating in secondary frequency modulation, establishing a state-space equation model equivalent to the dynamic model; discretizing the state-space equation model to obtain a discrete prediction model; according to the discrete prediction model, a target optimization function with the minimum quadratic sum of system frequency deviation is established, and constraint conditions are determined; solving the target optimization function at each current moment to obtain an optimal decision sequence of future N steps; and taking the first step of the optimal decision sequence as an optimal action control instruction of the hybrid pumped storage-battery energy storage system at the current moment, issuing the optimal action control instruction to the hybrid pumped storage-battery energy storage system to participate in frequency modulation, and adjusting the frequency deviation to zero in a relatively short time under the condition of wind-solar power fluctuation.

The invention discloses a garden landscape simulation method based on virtual reality technology and three-dimensional visualization, which obtains three-dimensional point cloud data of garden terrain and generates a three-dimensional grid model; calculates the slope value of each block grid of the three-dimensional grid model, generates a slope matrix of the three-dimensional grid model, clusters the block grids belonging to the same slope value interval into similar sub-blocks; sorts the terrain slope interval corresponding to each similar sub-block from small to large, selects the adapted plant species according to the illumination condition of the sorted terrain, and predicts the photosynthetic rate value of the plant species based on the photosynthetic rate prediction model; calculates the number of plants planted in the terrain according to the area of ​​the terrain corresponding to each sub-block and the photosynthetic rate value of the plant in the terrain; simulates planting on the three-dimensional grid model, and performs garden landscape virtual reality display on the three-dimensional grid model based on virtual reality technology. The invention can carry out targeted design of different slope areas of garden landscape.

The invention discloses a culture, photostimulation and signal processing method of a three-dimensional on-chip brain. The three-dimensional on-chip brain is transfected by using adeno-associated viruses which can specifically express light-sensitive channel proteins, so that cells of the three-dimensional on-chip brain can express the light-sensitive channel proteins on cell membranes of the cells, and 470nm blue light emitted by a light source irradiates the three-dimensional on-chip brain expressing the light-sensitive channel proteins; according to the method, light-sensitive channel protein on a cell membrane is opened, ions in a culture medium enter cells, the ion concentration in the environment is transiently changed, the change of the ions can be detected through a multi-electrode array, and the change range is analyzed; the physiological characteristics of the three-dimensional on-chip brain can be obtained, the function network structure of the three-dimensional on-chip brain is analyzed, and the biological intelligent function of the three-dimensional on-chip brain is disclosed.

The invention relates to a metasurface optical element phase optimization method and a continuous line laser projection module, and belongs to the technical field of optical elements, the metasurface optical element phase optimization method comprises the following steps: S1, using Zemax to design a lens capable of converting approximately parallel incident Gaussian plane waves into continuous line laser at a certain emission angle, converting the rise of the lens into a phase surface curve; s2, performing full-wave simulation by using FDTD to obtain a series of atomic parameters, and selecting a high-transmittance region in the atomic parameters as an optimized initial target monomer; s3, solving units in all periods within a certain space angle range according to a formula; and S4, solving a group of slopes ki every 2 pi from the center of the lens in the S1 to the two sides, and matching the value of ki with the optimized unit library until the filling of the phase surface type of the whole lens is completed. According to the invention, through algorithm optimization, the phase surface type after the arrangement of the nanorods is close to continuous arrangement, and the projection of continuous line laser is realized.

The present invention discloses a method and system for designing an offshore platform for flexible direct current transmission. The method first calculates the PQ operation range of the offshore and onshore converter stations respectively based on the designed initial value of the valve side voltage of the connecting transformer of the offshore and onshore converter stations, and continuously adjusts the valve side voltage value of the offshore and onshore converter stations until the PQ operation range of the offshore and onshore converter stations meets the preset requirements, and then designs the insulation matching parameters based on the connecting transformer valve side voltage and PQ operation range that meet the requirements, and finally calculates the volume and weight of the offshore platform according to the insulation parameters. The present invention can ensure that the offshore platform can maintain sufficient stability and anti-interference ability under various operating conditions of offshore wind power flexible direct current transmission, and can reasonably design the volume and weight of the offshore platform, thereby reducing the construction and maintenance costs of the offshore platform.

The invention discloses a voltage class design method for a medium-voltage direct-current AT type traction power supply system, and the method comprises the steps: S1, determining a system network parameter set according to a train operation scene, building a system equivalent circuit model, and initializing a voltage class to be a minimum voltage class; s2, judging whether the voltage level is within a preset range, and if so, S3; otherwise, outputting a result; s3, calculating electrical parameters of the line based on power flow analysis, and judging whether the pantograph voltage is within a preset range, if so, S4; otherwise, S7; s4, judging whether the stray current and the steel rail potential are within a preset range or not, and if so, S5; otherwise, S7; s5, calculating the temperature of the wire, judging whether the temperature of the wire is within a preset range or not, and if so, S6; otherwise, S7; s6, calculating the total cost according to economic analysis, and returning a result under the current voltage grade; and S7, increasing the current voltage grade according to a preset gradient, and returning to S2. The method has the effect that the voltage grade design of the medium-voltage direct-current traction power supply system accessed by the direct-current AT is realized.

The utility model relates to dust removal equipment technical field discloses a kind of anti-deformation framework with buffer structure, including base, the periphery of base top is equipped with longitudinal buffer component, the top of longitudinal buffer component is equipped with radial buffer component, the top of radial buffer component is equipped with framework main body, and framework main body includes fixed bottom plate, the periphery of fixed bottom plate bottom is uniformly fixedly connected with T block, and radial buffer component includes support plate. When the dust on the surface of pulse jet filter bag is blown, the framework main body is subjected to instantaneous high pressure, and then the framework main body vibrates, the second buffer spring can buffer the vibration in horizontal direction, the first buffer spring can buffer the vibration in vertical direction, the impact force during blowing is absorbed, and the framework main body is prevented from deforming or even breaking due to instantaneous stress concentration.

A Mars exploration landing platform structure that withstands complex and large loads has a Mars rover interface on the top surface of the top plate, and rear-buried connecting seats for connecting to the reinforcing beam in the back cover are arranged at the four corners; four diagonal brace brackets are installed on the back of the top plate, and the position of one end of the diagonal brace bracket connected to the top plate corresponds to the position of the rear-buried connecting seat; side panels are installed between adjacent diagonal brace brackets, and the side panels form the side surfaces of an inverted trapezoidal quadrangular pyramid, and the diagonal brace brackets are located at the edge positions of the quadrangular pyramid; landing buffer mechanism interfaces are respectively arranged on the four side edges, and buffer corner boxes are installed inside the side panels at the interface positions; partitions are installed at the buffer corner box positions for transmitting force to the bottom plate, and the three sides of the partitions are respectively connected to the bottom plate, the side plates, and the top plate, and the fourth side is suspended, and an auxiliary support corner box is installed at the junction of the suspended side and the top plate; the interior of the inverted trapezoidal quadrangular pyramid is used to install an engine and a tank, and the bottom plate is connected to the side edges and the diagonal brace brackets; a bracket positioning seat is installed on the diagonal brace bracket for connecting to the large bottom interface.

The present invention provides a wall-mounted air conditioner indoor unit and its wind guide plate. The wind guide plate includes a wind guide plate body, which is used to be installed at the air outlet of the wall-mounted air conditioner indoor unit; and a plurality of wind-raising parts, each of which is protrudingly arranged on the first side of the wind guide plate body to define a drainage channel with the first side, and the outlet of the drainage channel is formed on the side facing the first end of the wind guide plate body, and the wind guide plate body is formed with a plurality of drainage ports that penetrate its two sides, each drainage port is connected to a drainage channel, and each wind-raising part is configured to: when the wind guide plate is in a position with the first side facing upward and the first end facing forward, the air supply airflow changes the airflow direction when flowing through the wind-raising part, and forms a negative pressure at the first side, so as to drive the ambient air on the other side of the wind guide plate body to merge into the air supply airflow through the drainage port and the drainage channel in sequence. The wind guide plate of the present invention has an air guiding function and a drainage and mixing air function, so as to make the air supply airflow more comfortable.

The invention discloses an offshore platform design method and system for flexible direct current transmission, and the method comprises the steps: firstly calculating PQ operation intervals of offshore and onshore converter stations based on the valve side voltage initial values of connection transformers of the designed offshore and onshore converter stations, and continuously adjusting the valve side voltage values of the offshore and onshore converter stations; the method comprises the following steps of: designing a connection transformer valve side voltage until PQ operation intervals of offshore and onshore converter stations meet preset requirements, designing insulation matching parameters based on the connection transformer valve side voltage and the PQ operation intervals meeting the requirements, and finally calculating the volume and the weight of an offshore platform according to the insulation parameters. The offshore platform can be ensured to keep enough stability and anti-interference capability under various operation conditions of offshore wind power flexible direct current power transmission, and the size and weight of the offshore platform can be reasonably designed, so that the construction and maintenance cost of the offshore platform is reduced.

The present invention discloses a variable nozzle turbine design method under geometric and aerodynamic constraints. The method is: based on the aerodynamic performance and working fluid conditions of the prototype ordinary turbine under the maximum speed working condition, the design requirements of the variable nozzle turbine and the characteristic constants of the flowing working fluid are determined; the key parameters of the variable nozzle turbine are determined by combining the empirical formula and the volute and impeller dimensions of the prototype ordinary turbine; the overall thermal parameters of the variable nozzle turbine stage are calculated; the variable nozzle turbine wheel diameter ratio and the reaction degree value range are set; the main structural parameters of the nozzle ring are determined according to the structural dimensions of the prototype ordinary turbine volute and the inlet diameter of the variable nozzle turbine impeller; the main structural parameters of the variable nozzle turbine are obtained according to the above calculation results and given parameters. The method improves the low-speed torque characteristics and dynamic responsiveness of ordinary turbocharging technology.

The embodiment of the utility model discloses an indoor distribution device with a test function, the indoor distribution device comprises a signal source, a spectrum analyzer and a to-be-tested object, the output end of the signal source is connected with the input end of the to-be-tested object, and the signal source sends an input signal to the input end of the to-be-tested object through the output end of the signal source; the input end of the spectrum analyzer is connected with the output end of the to-be-tested object, and the spectrum analyzer receives an output signal sent by the output end of the to-be-tested object through the input end of the spectrum analyzer, tests the output signal and outputs spectrum power; the to-be-tested object comprises at least one of a first to-be-tested branch circuit, a second to-be-tested branch circuit, a third to-be-tested branch circuit, a fourth to-be-tested branch circuit, and any one of the first to-be-tested branch circuit, the second to-be-tested branch circuit, the third to-be-tested branch circuit and the fourth to-be-tested branch circuit. According to the embodiment of the invention, different signal distribution branches can be simulated and tested, and construction and maintenance of an indoor distribution system are facilitated.