31results about How to "Optimize geometry" patented technology

The invention discloses a machine learning optimization method of a low-frequency sound absorption structure based on three-dimensional printing, and belongs to the technical field of artificial intelligence acoustics, the low-frequency sound absorption structure is prepared from a photosensitive resin material through photocuring three-dimensional printing, and comprises a side seam, an extension cavity, a circular through hole, a resonance cavity, a first partition plate, a second partition plate and a third partition plate, the method has good expansibility and can be adjusted according to different noise control requirements; through a machine learning optimization method, structure parameters can be quickly adjusted to cope with a noise control task on the premise of ensuring a small size, so that a remarkable sound absorption effect is obtained at a specific low-frequency band; according to the method, a machine learning method based on a multi-layer perceptron and a genetic algorithm is adopted, geometric parameters of the low-frequency sound absorption structure are optimized, simulation calculation is carried out by using a commercial finite element solver COMSOL Multiphysics, and the sound absorption performance of the structure is further verified and optimized.

The invention discloses a three-dimensional space velocity field measuring device and method suitable for a helicopter nozzle, and belongs to the technical field of aerodynamics test. The problems that in the prior art, a traditional three-dimensional velocity field measuring device and method are complex in arrangement and low in calculation efficiency are solved. A scanning type measuring device is built, a laser plane is calibrated, internal and external parameters of a double-exposure camera are calibrated, a checkerboard calibration plate is used for building a standard space plane grid, and a high-precision translation table is controlled by a computer to move to a designated position. Triggering each component through a digital pulse signal generator and synchronously controlling the two double-exposure cameras to collect particle images when the spray pipe sprays flow; and a three-dimensional velocity field based on the particle image is determined, and a three-dimensional space velocity field of jet flow of the jet pipe is obtained. According to the invention, high-precision and high-resolution velocity field data are effectively provided, accurate measurement of the three-dimensional velocity field of the helicopter nozzle is realized, and the method can be applied to measurement of the three-dimensional velocity field of the helicopter nozzle.

The invention provides a unit cell structure design method and device based on nickel-titanium shape memory alloy, and relates to the technical field of intelligent materials and structures.The method includes the steps that relevant characteristic parameters of nickel-titanium alloy are collected, a mechanical property index, a thermal stability index and a reliability index are generated, and then a phase change temperature index is obtained through comprehensive calculation; and the phase change temperature threshold is corrected, the geometrical shape and the bonding mode of the unit cell structure are determined, and the quasi-zero-stiffness curved beam, the supporting frame and the connecting part of the unit cell structure are optimally designed in combination with the corrected phase change temperature threshold. According to the method, through characteristic parameter pretreatment, mechanical property index calculation and unit cell structure geometric optimization of the nickel-titanium shape memory alloy, the excellent performance under different phase change states is achieved, and the buffering energy absorption and low-frequency vibration isolation functions of the alloy are improved.

The invention provides an aluminum / steel dissimilar metal laser melting-brazing method, and belongs to the technical field of dissimilar metal precision connection. The melting-brazing method adopted by the method is between melting welding and brazing, the high-strength structure of melting welding and the good wettability of brazing are combined, and a high-strength welding joint can be obtained. According to the method, firstly, slope-shaped grooves are machined in the butt joint sides of the to-be-welded aluminum plate and the to-be-welded steel plate correspondingly, then welding is conducted, compared with vertical face butt joint welding, the mechanical property of a connector is improved, and the air hole defect is effectively restrained; the synergistic effect of the slope-shaped half-lap-joint groove and laser melting-brazing organically unifies a welding structure and metallurgical regulation and control, improves geometric and mechanical structures, interface metallurgical reaction, microscopic component segregation and welding defects of aluminum / steel plate butt welding, and obtains a melting-brazing joint with excellent microstructure and mechanical properties.

This invention provides a pre-rotating air inlet ring, a centrifugal fan, and a range hood, belonging to the field of kitchen appliance technology. The pre-rotating air inlet ring includes an outer fixed ring, an inner fixed ring, and multiple blades; the outer and inner fixed rings are concentric and coaxially arranged; multiple blades are distributed between the outer and inner fixed rings, with the inner end of each blade fixedly connected to the inner fixed ring and the outer end fixedly connected to the outer fixed ring; the extension direction of the blades forms an acute angle with the perpendicular line to the axis of the outer fixed ring, i.e., the pre-rotation angle; the annular area is divided into three fan-shaped areas with successively increasing pre-rotation angles (α1<α2<α3) and successively decreasing blade spacing angles (β1>β2>β3). This achieves differentiated and gradient guidance of the inlet airflow in the circumferential direction.

The invention relates to a volume bomb model for analyzing the ignition process of low-activity fuel, and the model comprises a volume bomb which is a cylinder or a semi-cylinder and is internally provided with a spraying hole assembly, and the axis of the spraying hole assembly is perpendicular to the axis of the volume bomb; the spraying hole assembly comprises an ignition spraying hole and at least one fuel spraying hole, the ignition spraying hole is formed in the eccentric position of the containing bomb, the fuel spraying hole is formed in the axis position of the containing bomb, and the spraying range of the ignition spraying hole at least partially coincides with the spraying range of the adjacent fuel spraying hole. According to the volume bomb model, the multiple fuel spraying holes are formed in the axis position of the volume bomb, the ignition spraying holes are formed in the eccentric position, and the axes of the ignition spraying holes intersect with the axes of the adjacent fuel spraying holes, so that first fuel beams sprayed out of the adjacent fuel spraying holes are directly ignited by the ignition fuel beams sprayed out of the ignition spraying holes; meanwhile, the second fuel beams sprayed out of the other fuel spraying holes are indirectly ignited, and direct ignition and indirect ignition can be studied at the same time; and the combustion problem of premixed dual fuels can be solved.

The invention relates to a preparation method and stretching equipment of a large-proportion pipe. The large-proportion pipe is characterized in that the outer diameter / inner diameter of the pipe is larger than 5. The preparation method comprises the following steps: preparing a pure quartz hollow pipe blank by using OVD, carrying out inner and outer diameter grinding processing on the pure quartz hollow pipe blank to obtain a pure quartz hollow sleeve with small wall thickness deviation, drawing the pure quartz hollow sleeve into a pure quartz pipe by using a vertical melting and drawing device, vacuumizing in the drawing process, and giving a certain relative vacuum degree to obtain the pure quartz pipe. And controlling the ratio of the pipe to the outer diameter / inner diameter to be more than 5. The pure quartz hollow tube blank is prepared through the OVD technology, the requirement for high purity of the quartz tube material is met, the hydroxyl content is low, the machining efficiency is high, and the manufacturing cost is low; the vertical melting and stretching equipment is simple and reasonable in structural arrangement, the annular thermal field is uniformly distributed, and the drawing processing quality of the pure quartz pipe is ensured; and meanwhile, the ratio of the outer diameter to the inner diameter is changed and controlled through the vacuumizing function of the vertical melting and stretching equipment.

The utility model relates to the technical field of automobile covering part flanging processing, and discloses an automobile covering part side flanging rotating die, which solves the problems in the background technology, and is characterized in that the rear wall of a lower die holder is fixedly connected with a sliding seat, an air pressure driver is fixedly arranged on the sliding seat, and the telescopic end of the air pressure driver is fixedly connected with a gear box; the bottom of the gearbox is slidably connected with the sliding seat, a servo motor and a driving wheel are mounted in the gearbox, the output end of the servo motor is fixedly connected to the driving wheel, one side of the driving wheel is meshed with a first driven wheel, the other side of the driving wheel is meshed with a second driven wheel, and one side of the second driven wheel is meshed with a third driven wheel. The first driven wheel and the third driven wheel are fixedly connected with a pair of wheel discs respectively, flanging pieces are fixedly connected to the disc faces of the two wheel discs respectively, pre-flanging releases partial elastic deformation in advance, the springback amount after final flanging is obviously reduced, the geometrical shape of materials is optimized, and the follow-up forming process is more stable.

The present invention discloses a method for preparing a composite electrocatalyst of platinum copper nanocubes partially coated with cerium oxide, wherein copper-doped cerium oxide is anchored on the surface of a carbon substrate in advance to obtain a copper-doped cerium oxide / carbon carrier, and then a platinum precursor is adsorbed on the surface of the copper-doped cerium oxide / carbon carrier, and then a high-pressure solvent thermal reaction is performed using N,N-dimethylformamide as a solvent and a reducing agent. During the high-pressure solvent thermal reaction, the platinum precursor is reduced to generate platinum nanocubes; the Cu in the carrier 2+ It will also move into the platinum nanocube lattice and be reduced to form platinum-copper alloy phase nanocubes. The present invention cleverly utilizes the SMSI effect induced by solvent heat, and simply realizes the reduction of platinum precursor, partial coating of cerium oxide and the formation of platinum-copper alloy phase at the same time, greatly improving the MOR activity, stability and CO poisoning resistance of the catalyst, and has universal promotion.

The present invention provides a bulk acoustic wave filter, a design method, a manufacturing method and a communication device, comprising: using a series thin film bulk acoustic wave resonator and a parallel thin film bulk acoustic wave resonator to build a bulk acoustic wave filter with a ladder topology structure, the series thin film bulk acoustic wave resonator and the parallel thin film bulk acoustic wave resonator both include a functional layer and a frame structure with a protrusion, wherein the functional layer includes a lower electrode, a piezoelectric layer, and an upper electrode; simulating to obtain a frequency response curve of the bulk acoustic wave filter, identifying the frequency range of a parasitic passband caused by the protrusions of the frame structure in the series thin film bulk acoustic wave resonator and the parallel thin film bulk acoustic wave resonator at a low frequency of the passband of the bulk acoustic wave filter; designing the parasitic resonance frequency of the series thin film bulk acoustic wave resonator to be lower than the parasitic resonance frequency of the parallel thin film bulk acoustic wave resonator at the frequency range corresponding to the parasitic passband, thereby forming a parasitic stopband replacing the parasitic passband at the frequency range of the parasitic passband.

A laser cutting method for producing n trimmed sub-blanks from a master blank made of metallic material, where n is an integer strictly greater than 1, the laser cutting method comprising the following steps: - Op1 / Positioning the master blank on a cutting table, the cutting table comprising n strips arranged to move relative to each other in a transverse direction; - Op2 / Clamping at least a portion of the master blank to the cutting table; - Op3 / Cutting n undragged sub-blanks from the master blank in a longitudinal cutting direction using a laser source; - Op4 / Separating the n strips of the cutting table from each other in a transverse direction; - Op5 / Releasing the clamps; - Op6 / Clamping the n undragged sub-blanks to the n strips; - Op7 / Laser trimming the n undragged sub-blanks to form n trimmed sub-blanks; - Op8 / Releasing the clamps; - Op9 / Unloading the n trimmed sub-blanks from the cutting table.

The invention provides a method for reducing brittle cracks of liquid metal during welding, which comprises the following steps of: 1, selecting a GPa-grade galvanized high-strength steel plate, cleaning a to-be-welded surface with acetone or alcohol, removing impurities, and processing the to-be-welded surface into a spot welding sample; 2, selecting a spherical electrode; thirdly, welding is conducted through a multi-section type spot welding technology; and 4, after welding is finished, the LME crack density and the maximum crack depth of the sample are detected. According to the method, stress concentration in the spot welding process can be reduced, the number and depth of LME cracks are reduced, and the shearing performance of a spot-welded joint is improved.

The utility model discloses a pneumatic extinguisher impeller with novel three-dimensional structure blades, relates to the technical field of pneumatic extinguishers, and solves the problems that the original impeller blade configuration and volute structure cause certain loss of internal gas flow, the gas flow rate at an outlet is influenced, and the gas flow rate is influenced. The backpack type pneumatic extinguisher comprises an impeller body, arc-shaped blades are arranged in the impeller body, through holes are formed in the positions, between the blades, of the impeller body, the size parameters of the blades of the impeller are improved, and the size parameters comprise the size on the horizontal plane and the size perpendicular to the plane of the impeller; the geometric configuration of the impeller blade is improved, and the geometric parameters of the impeller blade and the volute are integrally optimized; the energy loss caused by gas flowing in the pneumatic extinguisher is improved, and the working efficiency of the impeller of the pneumatic extinguisher is improved.

The present application provides an evaluation method for cutting a crystal ingot. The evaluation method includes the following steps. A plurality of sampling points are set on a test piece of the crystal ingot. Then, a plurality of observation planes are set. Each observation plane is formed by at least two adjacent sampling points. After that, the average value of the measured values of the sampling points included in each observation plane is calculated. And the observation plane corresponding to the minimum average value is taken as the reference plane for cutting the crystal ingot.

The application discloses a kind of parameterized modeling-based optimization design method and system of centrifugal fan volute profile, belong to industrial centrifugal fan design field.The method includes: firstly, volute profile away from volute tongue side is constructed, determine the width of two circular arcs away from volute tongue side of volute;Second volute tongue profile parameterization constraint, define volute tongue opening degree β, volute tongue radius R, volute tongue center and impeller center distance D key parameter, volute tongue geometry is controlled by three parameters independently;Finally, profile fusion and optimization, adopt single circular arc to connect volute profile away from volute tongue side and volute tongue profile tangentially, avoid geometric over definition problem, complete overall modeling.By improving the degree of freedom of volute tongue area, effectively reduce the flow separation and impeller interference at volute tongue, optimize the uniformity of volute internal flow field.

The invention provides a pendant for a polarization maintaining optical fiber pendant and a pendant method, and belongs to the technical field of optical fiber manufacturing, the length of the pendant for the polarization maintaining optical fiber pendant is 240mm to 300mm, and the diameter of the pendant is 10mm to 12mm. The method comprises the following steps: welding a pendant at the front end of a rod head of a polarization-maintaining preform rod, wherein the pendant is the pendant for the polarization-maintaining optical fiber pendant in the first aspect; lowering the pendant and the preform to a high-temperature area; and the interior of the furnace body is heated to a set temperature, so that the pendant is fused for wire falling. According to the pendant for the polarization maintaining optical fiber wire falling, after the pendant is fused, a furnace opening cannot be blocked, and therefore normal wire falling can be guaranteed. According to the polarization maintaining optical fiber falling method, in the falling process, after the falling head is fused at a high temperature, falling is conducted through the gravity of the falling head, efficiency is high, the time of a boron rod in a high-temperature area is shortened, melting of the boron rod and deformation of the boron area are reduced, loss of the front end of a formed fiber is remarkably reduced, and the geometric structure is good.

The invention discloses an Ansys thermosetting coupling analysis method for a brake disc based on Spaceclaim, relates to the technical field of brake disc thermosetting coupling simulation, and aims at solving the problems that an existing racing car brake disc thermosetting coupling analysis method is complex in working condition, large in calculation amount and not easy to operate. The method is technically characterized by comprising the steps that firstly, a brake disc and friction plate model is established and imported into finite element analysis software Ansys, materials are selected for the brake disc and the friction plate, material attributes are input, and the step number and time are set; 2, boundary conditions are applied, force generated by braking is regarded as a linear process, and braking force is applied; step 3, repairing the distorted grid; 4, defining a contact surface as friction, a formula as a generalized Lagrangian method, updating rigidity as each iteration, and the rest as program control, setting a connection mode as geometry-ground, and a type as revolution; and 5, temperature distribution and deformation quantity are obtained through thermosetting coupling analysis.

The invention belongs to the technical field of machining, and particularly relates to a thread cutter and a thread machining method. The threaded cutter comprises a cutter body, a threaded rod and a threaded rod, wherein a mounting hole is formed in the middle of the cutter body; the at least one cutter tooth is uniformly arranged on the cutter body along the circumferential direction, the front side surface of the cutter tooth is provided with a front cutter surface and a chip groove, the left side and the right side of the cutter tooth are respectively provided with a left cutter surface and a right cutter surface, the top of the cutter tooth is provided with an upper cutter surface, and the cutter front angle of the front cutter surface is 2-10 degrees.

The invention discloses a fan blade and a fan, and relates to the technical field of electric appliances. The hub comprises a hub body and a connecting piece integrally formed with the hub body, the connecting piece is located at the center of the hub body, a first assembly hole is formed in the center of the connecting piece, and the connecting piece and the first assembly hole are both of a D-shaped structure. And the outer side of the connecting piece is provided with a stepped shape-following groove which is arranged around the connecting piece. Therefore, the D-shaped first assembly hole is directly formed in the fan blade through one-time injection molding, and on the basis that the assembly tolerance requirement is met, the production process is simplified, and the production cost is reduced. Moreover, the geometric structure of the connecting piece can be optimized by introducing the stepped shape follow-up groove in the outer side of the connecting piece, so that the cooling shrinkage caused by the structural thickness difference of the connecting piece is reduced.

The invention provides an X-ray tube primary optical testing device. The X-ray tube primary optical testing device comprises a protective shell, a radiation source and a detector, wherein the protective shell is used for testing a test article; the radiation source and the detector are arranged in the protective shell and are adjustable in position; the detector is used for receiving a signal sent by the radiation source; a test article is placed in the protective shell; two groups of adjusting mechanisms which are oppositely arranged and are distributed on the left side and the right side of the test article are arranged in the protective shell; the adjusting mechanisms are used for adjusting the positions and the angles of the radiation source and the detector in the protective shell; the inclination angles and positions of the radiation source and the detector are adjusted through the adjusting mechanism, so that the imaging accuracy and definition can be improved, as images are allowed to be obtained at different angles, the geometric structure of the detection system is optimized, and more comprehensive information is provided. In addition, adjustment of inclination angles and positions of the radiation source and the detector can meet different detection requirements. In addition, by adjusting the positions of the radiation source and the detector, the unnecessary detection time can be reduced, and the detection efficiency is improved.

The invention belongs to the technical field of mechanical engineering magnetic liquid sealing, and particularly relates to a multi-scale high-quality mesh generation method for a rotating shaft magnetic liquid sealing structure, which comprises the following steps: constructing a two-dimensional axisymmetric magnetic liquid sealing model; importing the two-dimensional axisymmetric magnetic liquid sealing model into a grid division tool for grid division to obtain a target grid file; and detecting the precision of each grid in the target grid file, and if a preset precision index is met, outputting the target grid file. According to the method, an encryption area needing high-precision calculation and a relatively secondary non-encryption area are accurately defined based on a regional partitioning strategy, so that unnecessary calculation burden caused by global encryption is effectively avoided; meanwhile, according to the characteristics that the size of the encrypted area is small and the magnetic flux density changes extremely violently, a two-in-one grid transition strategy is innovatively introduced into the junction of the encrypted area and the non-encrypted area, and the structured multi-scale grid layout is achieved while it is ensured that the grids are smoothly transited from high density to low density.

The invention relates to the technical field of gun barrel rifling cathode design, and discloses an electrolytic machining gun barrel rifling cathode design method which comprises the following steps: (1) shape reverse engineering; (2) selecting and analyzing materials; (3) surface treatment and coating technology; (4) precision manufacturing and quality control; (5) size and appearance detection; (6) installation and parameter optimization; and (7) processing test and iterative improvement. A design method for a gun barrel rifling cathode through electrolytic machining comprises the steps of reverse engineering of the shape, material selection and analysis, surface treatment and coating technology, precise manufacturing and quality control, size and appearance detection, installation and parameter optimization, machining testing and iterative improvement and the like. The problems existing in traditional electrolytic machining cathode design can be solved in a planned mode, and the machining quality and efficiency are improved.

The present invention provides a columnar specimen fatigue test loading device, which belongs to the field of material testing devices, and includes: a load transfer member, a first limit end is arranged in the middle of its inner wall; a force member, the outer diameter of which matches the inner diameter of the load transfer member, and a second limit end is arranged on its inner wall; one end of the force member is detachably connected to the load transfer member, and the other end is provided with a through hole; the first limit end and the second limit end are both truncated cone structures with cavities; a clamping assembly, which includes two symmetrically arranged clamping blocks; when the clamping assembly is used, it is located between the load transfer member and the force member, and when a columnar specimen is clamped between the two clamping blocks, the two clamping blocks form a spindle-shaped structure, and at this time, the two side conical surfaces of the spindle-shaped structure formed by the two clamping blocks are respectively abutted against the inner walls of the first limit end and the second limit end. The device can ensure uniform stress distribution at the ends of the columnar specimens in fatigue tests, and avoid brittle failure caused by concentrated force at the ends of the columnar specimens.

The present invention discloses an air cooling and sealing system for a fuel cell air compressor, comprising an air compressor; an airway flow structure, wherein the airway flow structure is arranged in the air compressor, and the airway flow structure comprises a main air inlet, an axial air inlet duct and a radial air inlet duct; a sealing structure, wherein the sealing structure is arranged at both axial ends of the air compressor; while satisfying a reasonable air cooling flow ratio of each part, the structure of the air cooling flow channel system is simplified, and the additional annular structure of the above-mentioned patent is avoided; in terms of sealing design, the sealing structure takes into account the balanced axial force, determines the direct size, adopts a labyrinth seal design, and optimizes the geometric size, thereby reducing leakage and improving the compression efficiency of the air compressor.

The invention discloses a rear motor main shaft of a numerical control lathe, which relates to the technical field of processing machine tools and consists of a rotor assembly, a machine body assembly, a front bearing assembly, a rear bearing assembly, a front end cover, a rear end cover, a motor shell assembly, an encoder assembly and an oil cylinder flange. The rigidity, machining precision and efficiency of the spindle are improved, and the high-precision and high-rotating-speed requirements are met. And the oil cylinder flange and the rotor seat are designed in a split manner, so that the mounting and dismounting convenience and the customizable degree are improved. The stator assembly is made of high-quality magnetic materials, the magnetic circuit design is optimized, and heating is reduced. The motor shell assembly is made of efficient heat dissipation materials and designed, and effective heat dissipation is ensured. A traditional motor stator assembly is difficult to maintain through integrated glue pouring, the stator assembly and the motor shell are detachable in a split mode, the problems of installation complexity and later maintenance are solved, and environmental pollution and human body harm are reduced.

The present application relates to the field of industrial internet, and provides a federated learning method and system for training of an industrial internet edge sensor device. The method comprises: distributing global model parameters and aggregated momentum to a selected subset of edge sensor devices, and initializing to obtain local model parameters and local momentum; dividing the local model parameters into multiple parameter blocks, performing momentum updating on the current batch gradient through a momentum accumulation algorithm to obtain a momentum matrix; performing orthogonalization processing on the momentum matrix through a Newton-Schulz iteration algorithm to obtain an orthogonalization matrix; performing momentum gradient alignment scoring on the multiple parameter blocks to obtain a smooth alignment score; performing weighted updating on the orthogonalization matrix to obtain updated parameter blocks; and aggregating the parameter block increments and the updated momentum by the server to obtain updated global model parameters and updated global aggregated momentum. The present application reduces the communication frequency and improves the training efficiency of the edge sensor device.

The utility model discloses a novel truss structure with node rings. The novel truss structure comprises an upper truss structure and a double-row column supporting structure, the upper truss structure comprises an upper chord member, a lower chord member, inclined legs, transverse pull rods, web members and node rings; the inclined legs are located between the upper chords and the lower chords, one ends of the inclined legs are connected to the joints of the lower chords and the stand columns, and the other ends of the inclined legs are connected to one fourth or three fourths of the upper chords on the same side; the upper end of the transverse pull rod is connected to the joint of the upper chord and the inclined leg, and the lower end of the transverse pull rod is connected to the middle top of the lower chord; the three node rings are respectively arranged at the joint points of the upper chord, the inclined legs, the transverse pull rods and the web members on the left side and the right side of the upper truss structure and the joint points of the transverse pull rods, the web members and the lower chord members in the middle of the upper truss structure in a surrounding manner. A traditional steel structure factory building beam is replaced by the novel truss with the node ring, and the problems that a traditional beam is insufficient in bearing capacity and large in deformation can be effectively solved.

The application discloses a method for manufacturing photovoltaic BC cells by using inkjet printing hot melt ink, which comprises the following steps: step 1, silicon wafer pretreatment; step 2, hot melt ink preparation; step 3, inkjet printing equipment debugging; step 4, P area mask manufacturing; step 5, etching back process for manufacturing P area; step 6, removing P area mask; step 7, N area mask manufacturing; step 8, etching back process for manufacturing N area; step 9, high-temperature activation and doping optimization; and step 10, subsequent processing. The method can overcome the problems of complex process, high cost and poor mask stability in the prior art, and achieve the goals of simplifying the process, reducing the cost, improving the cell performance and production efficiency.

The invention belongs to the technical field of electro-catalytic materials, and particularly relates to a transition metal-based heterojunction nano array electrode material and a preparation method and application thereof. The transition metal-based heterojunction nano array electrode material provided by the invention is prepared by three steps: firstly, placing a current collector in a mixed solution of transition metal salt and an organic ligand for reaction to obtain a metal-organic ligand precursor array material; then, the precursor array material is placed in a solution containing oxometallate to be treated; and finally, carrying out high-temperature gas-solid reaction with a selenium / tellurium source. The material can be used as an electro-catalytic material, shows excellent catalytic activity and stability in sulfide oxidation reaction (SOR), and provides an efficient and green solution for sulfur-containing wastewater treatment.

The present invention provides a rapid preparation method and application of a porous ruthenate pyrochlore catalyst doped with calcium ions, and belongs to the field of electrochemical technology. The present invention first forms a gel material through a metal salt complex reaction, and then uses a nano-calcium carbonate additive to assist the Joule heat treatment technology to prepare a porous ruthenate pyrochlore catalyst doped with calcium ions. This preparation method can inhibit the aggregation of ruthenate pyrochlore at high temperature, form a rich pore structure, promote calcium ions to enter the lattice of ruthenate pyrochlore, effectively modulate the composition of ruthenate, optimize the geometric configuration and electronic structure of Ru in the ruthenate catalyst, enhance the intrinsic activity of Ru, and show excellent acidic OER performance. In 0.1M HClO4 aqueous solution, 10 mA·cm ‑2 Under the current density, the OER overpotential of the catalyst is 202.1-235.4mV, which exceeds the commercial IrO2 under the same conditions, and has broad prospects for industrialization.