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395 results about "Operational reliability" patented technology

Operational Reliability is the equipment reliability observed during the actual operation under stated design conditions.

Highly generalizable converter open-circuit fault diagnosis method for motor drive systems

This invention discloses a highly generalizable method for diagnosing open-circuit faults in multi-transistor converters of motor drive systems. This method addresses open-circuit faults in power devices caused by overcurrent surges, poor heat dissipation, and other factors, preventing damage to the motor and power grid equipment caused by output current distortion and increased torque ripple. The method analyzes the retention characteristics of the positive and negative regions of the three-phase stator current under steady-state operating conditions to construct a fault location function, and combines auxiliary variables to accurately distinguish between single-power and dual-power device open-circuit faults. This invention enables rapid location and accurate identification of complex open-circuit faults such as those in opposite phases on the same side or in opposite phases on opposite sides. It offers advantages such as high diagnostic accuracy, strong ability to distinguish mixed faults, and non-invasiveness, making it suitable for motor drive systems with high requirements for operational reliability and fault tolerance.
Owner:ZHEJIANG UNIV ADVANCED ELECTRICAL EQUIP INNOVATION CENT

A method and system for optimizing a press-pack IGBT device package structure

The application relates to the technical field of power electronics, and discloses a press-contact type IGBT device packaging structure optimization method and system. The method comprises the following steps: constructing an equivalent model of a press-contact type IGBT device; constructing a differential algebraic equation for uniformly describing the equivalent model of the press-contact type IGBT device and circuit port variables; converting the differential algebraic equation into a nonlinear algebraic equation group through time domain discretization, and constructing an iteration matrix with a global state vector as a derivation object according to a solving mode of the nonlinear algebraic equation group; performing low-dimensional subspace projection on the iteration matrix based on a Krylov subspace, and combining residual minimization to solve a linear subproblem of the iteration matrix, so that current uniformity characteristic results of the press-contact type IGBT device are obtained; and the packaging structure of the press-contact type IGBT device is optimized based on current density distribution reflected by the current uniformity characteristic results. The application can improve the current uniformity and operation reliability of the system.
Owner:MAINTENANCE BRANCH COMPANY STATE GRID ZHEJIANG ELECTRIC POWER

Stator slot wedge, stator module and disc motor

The utility model discloses a kind of stator slot wedge, stator module and disc type motor, and stator slot wedge includes base piece and magnetically conductive part.Base piece is made of non-magnetic material, and base piece includes the main body section of being arranged in the slot of stator core and the inner edge section of being protrudingly arranged at the radial inner end of main body section;Magnetic conductive part is made of magnetic material, and magnetic conductive part is at least assembled in main body section and is inserted with the side slot wall of slot;The part of inner edge section away from main body section along radial direction is provided with main insertion part, main insertion part is used to and is inserted with the main matching part of being arranged in inner ring oil seal plate, and insertion is fixed by colloid adhesion, and the surface of insertion at least part is relatively axial and is inclined to extend.The utility model eliminates magnetic leakage hidden danger as far as possible, optimizes magnetic circuit, improves the operation reliability of complete machine and improves the operation efficiency of complete machine.
Owner:ZHEJIANG PANGOOD POWER TECH CO LTD

Composite corrugated compensator inner wall protection structure, corrugated compensator and design method

This invention relates to a composite bellows compensator inner wall protection structure, the bellows compensator itself, and its design method. The inner wall protection structure is a composite layer structure, including an anti-erosion functional layer, a transition fixing layer, and a bellows substrate. The anti-erosion functional layer includes an outer ceramic plate and an inner ceramic plate. The transition fixing layer includes an outer ring plate and an inner ring plate, which are spaced radially and staggered axially, forming a non-rigid connection structure. The inner walls of the outer and inner ring plates are respectively provided with the outer and inner ceramic plates. The bellows substrate is made of thin metal sheet and has a corrugated structure, used to realize the displacement compensation function of the bellows compensator. One end of the outer ring plate is fixedly connected to the inner wall of the bellows substrate. This invention effectively improves the wear resistance, deformation coordination, and overall operational reliability of the bellows compensator under complex working conditions by constructing a composite protection system on the inner wall of the bellows that combines high erosion resistance and good deformation adaptability.
Owner:INSTITUTE OF MATERIALS & INTELLIGENT MANUFACTURING JIANGXI ACADEMY OF SCIENCES +1

A high-efficiency, high-reliability, low-noise full-electric operation power-driven actuating device for a ship

The utility model relates to a kind of high-efficiency high-reliability low-noise full-electric control power-driven action device for ship, including two servo electric cylinders, tiller, roller type support structure, base and mounting base;Tiller middle part is equipped with shaft hole, and one pin hole is respectively equipped in tiller both ends;Center shaft is fixedly worn in shaft hole, and center shaft lower end is connected in the bearing hole set in the front end of mounting base by bearing;One front pin shaft is respectively inserted and installed in the pin hole of tiller both ends;Two servo electric cylinders head are respectively rotated with two front pin shafts by centripetal joint bearing, and two servo electric cylinders tail are respectively rotated with rear pin shaft fixed in the front end of base by centripetal joint bearing;Base lower end is fixedly connected with the upper portion of the rear end of mounting base;Two groups of roller type support structures are connected in the bottom of servo electric cylinder, and two groups of roller type support structures are rolling contact with the upper end of mounting base.The device can greatly improve system operation efficiency, reduce noise and improve system continuous operation reliability.
Owner:JIUJIANG BRANCH OF THE 707 RESEARCH INSTITUTE OF CHINA STATE SHIPBUILDING CORP LTD

Intelligent cabin door system for unmanned aerial vehicle and cabin door structure design method

The invention belongs to the technical field of freight unmanned aerial vehicle delivery, and relates to an intelligent cabin door system for an unmanned aerial vehicle and a cabin door structure design method. The system comprises a driving system, a reel system, a curtain plate system, a sliding rail unit and a control unit. The control unit is electrically connected with the driving system; the driving system is arranged on the unmanned aerial vehicle body; the curtain plate system is connected with an unmanned aerial vehicle body through the sliding rail unit, the curtain plate system is connected with the reel system, the driving system is in transmission connection with the reel system through a chain wheel transmission structure, and the driving system drives the reel system to rotate so as to drive the curtain plate system to stretch or retract along the sliding rail unit. Opening and closing of the cabin door are realized. According to the invention, the number of moving parts is greatly reduced, the probability of clamping stagnation and wear failure of a mechanical transmission mechanism is fundamentally reduced, and the operation reliability of a cabin door system in harsh operation scenes such as emergency logistics and disaster rescue is remarkably improved.
Owner:ZHONGHANG ELECTRONIC MEASURING INSTR (XIAN) CO LTD

Sunshade assembly, glazing assembly, and vehicle

ActiveCN119974918BSlide motion synchronizationPrevent sliding jam and other undesirable phenomenaWindowsWindscreensStructural engineeringPower output
This application relates to a sunshade curtain assembly, a glass assembly, and a transport vehicle, which can solve the problem of poor operational reliability of existing sunshade curtain structures. The sunshade curtain assembly includes a fixing base, a guide rail assembly, a roller, a pull rod, and a power source. The fixing base is located at one end of the guide rail assembly. The roller winds up the curtain fabric and is fixed to the guide rail assembly via the fixing base. The pull rod is telescopically oriented along its length, and its two ends are slidably connected to the guide rail assembly. The pull rod is parallel to the roller and connected to one end of the curtain fabric. The power source includes a first power output end connected to the pull rod and a second power output end connected to the roller. The first power output end drives the pull rod to slide along the guide rail assembly at a first speed and pull the curtain fabric, while the second power output end drives the roller to rotate so that the curtain fabric is wound or unwound at a second speed. The first speed and the second speed are equal.
Owner:FUYAO GLASS IND GROUP CO LTD

Compressor ptc starter

PendingCN122137267ADynamo-electric motors/converters startersStarter detailsElectric machineControl theory
A compressor PTC starter belongs to the technical field of motor starting devices. It includes a housing and a housing cover; a thyristor (SCR) with its lower part disposed in the housing cavity and its upper part inserted into the housing cover cavity; a first PTC starting mechanism, a second PTC starting mechanism, and an S-connector disposed within the housing cavity. The first PTC starting mechanism includes a flat cylindrical first PTC, and the second PTC starting mechanism includes a cylindrical second PTC. The first and second PTC starting mechanisms are electrically connected to each other through the first PTC. The key feature is that the first PTC is horizontally positioned at the bottom of the housing cavity with its downward-facing side as a positioning support and its upward-facing side as an elastic clamp, and is subjected to contact pressure from the housing cover on the upward-facing side. The second PTC is longitudinally inserted into the housing cavity. Advantages: excellent stability; reduced steady-state power consumption for energy saving; improved operational reliability and service life; quick and convenient installation; no installation-related malfunctions.
Owner:CHANGSHU TIANYN ELECTROMECHANICAL CO LTD

Aerospace bearing and bevel gear dismounting tool and dismounting method thereof

PendingCN122442316ARotational axisAviation
The application relates to an aviation bearing and bevel gear dismounting tool and a dismounting method thereof, and belongs to the technical field of aviation machinery assembly and maintenance. The tool comprises a base positioning assembly for positioning and supporting the dismounting reaction force of a bevel gear shaft to be dismounted, a rotating force applying assembly for converting rotating torsion into axial dismounting tension, and a puller dismounting assembly respectively matched with a rotating bearing and a bevel gear; the rotating force applying assembly is supported on the upper end of the bevel gear shaft, the torsion input end rotates around the axis, and the tension output end is synchronously displaced along the axis with the torsion input; the lower end of the puller dismounting assembly is respectively hooked on the inner ring of the rotating bearing to be dismounted and the matched end face of the bevel gear to be dismounted and is limitedly matched with the reaction force end of the base positioning assembly. The application avoids the irreversible damage such as scratching and deformation of aviation precision parts caused by the conventional dismounting mode, greatly improves the operation efficiency and safety of the aviation bearing and bevel gear dismounting operation, and guarantees the reuse rate and operation reliability of the aviation core components after maintenance.
Owner:HARBIN DONGAN IND DEV

Lawn mower self-cleaning base station with cleaning assembly and method of cleaning a lawn mower

The application discloses a lawn mower self-cleaning base station with a cleaning assembly and a lawn mower cleaning method. The lawn mower self-cleaning base station comprises a base station main body, a cleaning assembly and a control assembly. The base station main body has a parking area for parking the lawn mower and a clamping position for clamping the wheels of the lawn mower. The cleaning assembly comprises a spraying mechanism and a brushing mechanism. The spraying mechanism comprises a water spraying pump and a plurality of water spraying ports in communication with the water spraying pump. The brushing mechanism comprises a plurality of cleaning brush units corresponding to the wheels of the lawn mower. The cleaning brush unit comprises a frame body, a brush body and a separate driving device, and the brush body is in transmission connection with the output end of the driving device. The control assembly can individually control the driving device of each cleaning brush unit. This design not only significantly improves the cleaning effect and resource utilization efficiency, but also avoids the problem that the whole machine stops running due to the clamping or failure of individual roller brushes in the traditional linkage driving mode, greatly improving the operation reliability and fault tolerance of the system.
Owner:QINGTING INTELLIGENT TECHNOLOGY (SUZHOU) CO LTD

A waveform tracking and active inverse compensation gas supplementing system for volume pump outlet pulsation suppression and a control method thereof

PendingCN122359289ASelf adaptiveSystem dynamics
The application discloses a kind of based on waveform tracking and active reverse phase air supplementing volumetric pump outlet pulsation suppression system and control method thereof, it is related to pulsation suppression technical field, for solving the problem that volumetric pump outlet pressure pulsation causes fluid delivery instability and affects system operating state during operation, by the real-time acquisition and phase analysis of the outlet pressure waveform of the volumetric pump to be measured, pressure fluctuation trend is constructed, based on phase reverse matching generation air supplementing regulation instruction realizes the reverse phase synchronization of air chamber regulation action and pressure change, and dynamic evaluation and compensation correction are carried out to gas-liquid coupling characteristics in combination with liquid level response, while introducing hysteresis control mechanism to closed-loop judge regulation termination and pulsation return state, to realize the adaptive suppression of pressure pulsation under different operating rhythm, improve outlet pressure stability, reduce pulsation residual amplitude, enhance system dynamic response consistency and operating reliability.
Owner:SOUTHWEST PETROLEUM UNIV

Vehicle control method and vehicle

This application provides a vehicle control method and a vehicle. The method, applied in the field of engines, includes: acquiring the vehicle's exhaust gas recirculation (EGR) rate, intake air state information, and environmental information; determining the duration of water accumulation risk and the mitigation duration in the intake system based on the EGR rate, intake air state information, and environmental information; and controlling the vehicle based on the duration of water accumulation risk and the mitigation duration. This effectively blocks the continuous accumulation of condensate in the EGR system, thus solving the problem of poor engine combustion stability caused by the instantaneous inhalation of water into the cylinder. Without sacrificing the original fuel-saving and emission-reduction performance of the EGR system, it significantly improves the vehicle's operational reliability and safety under complex conditions such as low temperature and high humidity.
Owner:GREAT WALL MOTOR CO LTD

A new type of dehumidifying, moisture-blocking and breathable valve

ActiveCN224433534UAmbient waterThermodynamics
This utility model discloses a novel dehumidification and moisture-blocking breathable valve, characterized by comprising: a valve body, a top cover, a waterproof and breathable membrane, a dustproof and breathable cover, and a moisture-blocking component. This novel dehumidification and moisture-blocking breathable valve, through the design of through holes within the valve body, can effectively achieve a balance of internal and external air pressure. Under the coverage of the waterproof and breathable membrane, even in high-humidity or moisture-containing environments, moisture is difficult to penetrate into the interior, thus preventing internal components from becoming damp and damaged. Simultaneously, the moisture-absorbing factors filled in the moisture-absorbing area, combined with the breathable holes, can adsorb and regulate moisture within the system, helping to maintain the dryness and stability of the equipment's interior and improve operational reliability. Furthermore, this breathable valve adopts a modular design, with a clear overall structure and simplified components, fully considering the convenience of production, assembly, and maintenance.
Owner:LIAONING KELANG TECHNOLOGY CO LTD

Stacker with a palletizing mechanism

ActiveCN224466886UBrickPalletizer
The utility model belongs to brick production equipment technical field, specifically disclose a stacking machine with the mechanism of going up a stack. The utility model discloses the workbench and the conveyer belt who sets up on the workbench, the top of conveyer belt is equipped with a plurality of placing plate, one side of conveyer belt is equipped with the fixing frame, the inside of fixing frame is equipped with the integration component, through the integration component can realize the accurate gathering integration of a plurality of bricks on the placing plate, make it regular as rectangular stacking, improve the neatness and stability of brick stacking, provide the standardization unit for the subsequent stacking machine body discharge stacking, effectively reduce the stacking misplacement, tilt and so on, improve the stacking efficiency and quality, at the same time, through the insertion design and symmetrical layout of first integration board and second integration board, adapt to the integration demand of different specifications bricks, enhance the equipment versatility, and ensure that the integration process brick stress is even, reduce the risk of brick damage, reduce material loss, guarantee the integration effect and equipment operation reliability.
Owner:QINGDAO NORIDA INTELLIGENT TECH CO LTD

Three-way joint suitable for installation of pre-buried pipeline harness of airplane

ActiveCN224342867UElectrical apparatusStructural engineeringTee connector
This utility model relates to the field of tee connector technology and discloses a tee connector suitable for the installation of pre-embedded pipeline harnesses in aircraft. It includes a main hollow column and a secondary hollow column, with the secondary hollow column connected to the lower end face of the main hollow column. Both the secondary and main hollow columns are equipped with clamping mechanisms, each including a threaded cap and a spring plate. The threaded cap has a threaded sleeve internally connected to it, which is welded to the exterior of both the main and secondary hollow columns. The spring plate is mounted on the exterior of both the main and secondary hollow columns. This tee connector for the installation of pre-embedded pipeline harnesses in aircraft improves the planning flexibility of complex pipeline paths within the aircraft, avoids the signal interference risks that may be caused by traditional harness crossings, ensures reliable fixing of the harness to resist flight vibrations, and avoids insulation damage that may be caused by rigid clamping, thus comprehensively improving the installation efficiency and operational reliability of the pipeline system.
Owner:JIANGSU TONGGUANG ELECTRONIC WIRE & CABLE CO LTD

A drill rod inserting machine for phosphogypsum

This invention discloses a drilling and insertion machine for phosphogypsum, relating to the field of phosphogypsum processing. It includes a frame, a lifting and insertion platform, a guide and limiting mechanism, and an automatic switching device. The frame has four vertically arranged rectangular columns, each with a vertically mounted hydraulic cylinder. The lifting and insertion platform is horizontally mounted between the columns via a positioning roller device. A vertically downward-pointing drill rod is evenly distributed on the lifting and insertion platform. The positioning roller device is hinged to a connecting frame at the upper end of the telescopic rod of the drive hydraulic cylinder device. A pressure block is fixedly connected to the telescopic rod. The guide and limiting mechanism is horizontally connected to the columns via the automatic switching device. This invention reliably guides and limits the swing amplitude of the drill rod during its downward insertion process and achieves synchronous cleaning during the upward return stroke, greatly improving the overall strength of the drill rod and the operational reliability of the equipment.
Owner:TONGLING LUYANG BUILDING MATERIALS CO LTD

A park virtual power plant resource coordination scheduling and demand response optimization method and system

PendingCN122371209AResource coordinationNetwork architecture
This invention discloses a resource collaborative scheduling and demand response optimization system and method for virtual power plants in industrial parks. It achieves global collaborative scheduling through a two-layer Actor-Critic network architecture, and uses a fusion of particle swarm optimization and fuzzy control to achieve grid-connected stability control. A three-layer fusion optimization architecture is constructed to complete the continuous amplitude calculation of demand response and the generation of equipment-level instructions. A unified algorithm support is provided by an intelligent optimization module. This invention effectively solves the problems of weak adaptability of existing global optimization models for virtual power plants in industrial parks, low level of intelligent decision-making in specialized sub-scenarios, and difficulty in coordinating multi-timescale scheduling and refined execution. It can achieve robust optimization and refined control in uncertain scenarios, balancing system economy, stability, and operational reliability. It is suitable for virtual power plants in industrial parks to efficiently participate in the power market and resource collaborative scheduling.
Owner:SHANDONG ZHENGCHEN TECH CO LTD

An artificial intelligence-based hydrogen energy storage and transportation intelligent supervision system and method

PendingCN122335144ARisk indicatorEngineering
This invention discloses an intelligent monitoring system and method for hydrogen energy storage and transportation based on artificial intelligence, relating to the field of artificial intelligence technology. Based on the material safety factor, the invention classifies containers into corresponding safety levels and defines the range of operational risk indicators corresponding to different risk levels in each operational stage. Based on operational status data, a stress-induced hydrogen diffusion prediction model is constructed. The hydrogen concentration is calculated based on the stress-induced hydrogen diffusion prediction model, and damage factors are calculated by combining temperature distribution and stress parameters to establish a damage factor prediction model. Based on the damage factors and combined with the time parameters of container anomalies, a container life prediction model is established. Real-time data is collected during container operation to predict the remaining container life and determine the current operational risk, significantly improving the safety, intelligence level, and operational reliability of the hydrogen energy storage and transportation system.
Owner:SHANXI BAOGUANG PRECISION CERAMICS CO LTD

A method and device for counter-deformation of a welded structure

This application provides an anti-deformation design method and apparatus for welded structures, relating to the field of superconducting magnet technology. The method includes: constructing a three-dimensional structural model of the weld seam; performing thermo-mechanical coupling analysis and stiffness analysis on the three-dimensional weld seam model to determine the inherent deformation caused by the welding process and the impact load deformation caused by service impact loads; determining anti-deformation parameters to compensate for the total deformation of the welded structure based on the inherent deformation and impact load deformation; and determining the geometric parameters of the welded structure based on the anti-deformation parameters. Therefore, this method suppresses deformation failure of the welded structure caused by the superposition of dynamic loads, extends the service life of the welded structure, and thus improves the operational reliability of the superconducting magnet cryogenic thermostat and even the entire high-speed maglev train.
Owner:CRRC CHANGCHUN RAILWAY VEHICLES CO LTD

A method for safe guidance control of a water surface robot based on dynamic constraints

The present application relates to a kind of water surface robot safety guidance control method based on dynamics constraint, comprising the following steps: S1, based on the construction of candidate control space of propulsion angle and rotating speed, generate multiple candidate control quantity combinations;S2, according to dynamics model, trajectory prediction is carried out to each candidate control quantity combination, and obtain feasible trajectory that satisfies dynamics constraint within preset prediction period;S3, collision risk assessment is carried out using closest approach point method, determine whether there is collision risk;S4, construct safety guidance control evaluation function, and select optimal control quantity combination from candidate control quantity combination by normalization weighted sum;S5, when there is collision risk, encounter situation is judged, and corresponding rule constraint is applied to candidate control quantity combination, and the final safety guidance control instruction is generated.The present application can quickly identify potential encounter threat in real-time scene, improve overall guidance control success rate and operation reliability.
Owner:HENAN UNIV OF SCI & TECH

A shift gear identification method and system based on three-dimensional space and a medium

A three-dimensional space-based gear shifting position recognition method, system, and medium are disclosed, comprising: real-time acquisition of the spatial position coordinates of a gear shift lever, the spatial position coordinates including lateral coordinate components, longitudinal coordinate components, and depth coordinate components; calculation of at least a weighted spatial distance between the spatial position coordinates and a preset reference coordinate for a certain gear; wherein the depth dimension weighting coefficient is greater than the lateral dimension weighting coefficient and the longitudinal dimension weighting coefficient; comparison of the weighted spatial distance with a preset gear engagement recognition threshold for the corresponding gear; and determination that the gear shift lever is engaged when the weighted spatial distance is less than the gear engagement recognition threshold. This invention, by introducing three-dimensional spatial coordinate detection (lateral, longitudinal, and depth components), overcomes the limitations of traditional two-dimensional planar projection, significantly improving the recognition accuracy and operational reliability under high-density gear layouts.
Owner:XIAMEN INTRETECH

A stacker rail straightening assembly

The utility model relates to a kind of stacker track modification components, including pre-buried plate, first bolt assembly, bottom plate body, grouting layer, transition bottom plate, gap piece, track, positioning press plate and second bolt assembly, pre-buried plate is laid on ground, first bolt assembly is located in the top of pre-buried plate, lower end is connected pre-buried plate, bottom plate body is located in the top of pre-buried plate and is connected first bolt assembly, the upper surface of bottom plate body is curved surface, grouting layer is filled between pre-buried plate and bottom plate body, transition bottom plate is located in the top of bottom plate body and is connected with bottom plate body Fixed, the upper surface of transition bottom plate is plane, gap piece is filled between transition bottom plate and bottom plate body, track and positioning press plate are all located in the top of transition bottom plate, positioning press plate presses track, second bolt assembly connects and fixed positioning press plate and transition bottom plate.The utility model's stacker track modification components, track modification efficiency is high, low in cost, and operation reliability is high.
Owner:ROBO TECHAUTOMATION SUZHOU CO LTD

A comprehensive utility tunnel suitable for island and reef environments

This application discloses an integrated utility tunnel suitable for island and reef environments, comprising an inner tunnel, an outer tunnel, a microplastic composite (MICP) impermeable body, an adaptive composite damping device, a sensing device, a control device, and a power supply device. The outer tunnel and the inner tunnel are coaxially arranged to form a vacuum cavity. An array of adaptive composite damping devices is disposed within the vacuum cavity and connected between the inner and outer tunnels for structural adjustment when the tunnel deforms. The MIP impermeable body surrounds the outer tunnel, reinforcing the surrounding foundation for seepage prevention. The sensing device detects structural deformation of the tunnel, and the control device controls the adaptive composite damping device to generate reset deformation based on the structural deformation. A thermoelectric power generation assembly provides power to various electrical devices. The integrated utility tunnel of this application can simultaneously achieve adaptive structural adjustment, foundation seepage prevention reinforcement, and energy self-sufficiency, significantly improving the structural stability, seepage prevention performance, and long-term operational reliability of the integrated utility tunnel in complex marine environments.
Owner:GUANGZHOU UNIVERSITY

A three-station mechanism drive assembly

This utility model relates to the field of switchgear technology, proposing a three-station mechanism drive assembly. Through the energy storage and release process of a torsion bar spring, it achieves rapid switching of the spindle assembly, effectively shortening operation time and improving circuit switching efficiency. The locking function of the pawl locking assembly ensures stable positioning of the output panel in the waiting state, preventing accidental rotation and improving the operational reliability of the three-station mechanism. The torsion bar spring stores energy through torsion and is easy to install on the spindle assembly of the three-station machine. Simultaneously, this three-station mechanism drive assembly integrates closing (connection), isolation, and grounding functions into one unit, simplifying the internal structure of the switchgear, reducing equipment size and manufacturing costs, and meeting the power system's requirements for compact and economical switchgear.
Owner:FOSHAN UNILINK ELECTRIC CO LTD

Water pump volute

The water pump volute comprises a volute body, the volute body comprises a top plate and an annular side wall, a first inner cavity is defined by the top plate and the side wall, a water inlet is formed in the center of the top plate, the side wall protrudes outwards to form a water outlet pipe, and the water outlet pipe and the water inlet are communicated with the first inner cavity. The volute is characterized in that a supporting boss and a plurality of connecting ribs are further arranged at the water inlet, the supporting boss is located in the first inner cavity, the first ends of the connecting ribs are connected with the outer side wall of the supporting boss, the second ends of the connecting ribs are connected with the inner wall of the water inlet, and the supporting boss, the connecting ribs and the volute body are integrally formed. The water pump volute is simple in structure and low in cost, the supporting boss can support the mandrel and limit axial movement of the rotor assembly, and the running reliability of a water pump is improved.
Owner:BROAD OCEAN MOTOR FUEL CELL TECH (ZHONGSHAN) CO LTD

Fuel rod for a water-cooled water-moderated nuclear reactor

PCT designated stageWO2026106506A1Fuel elementsNuclear energy generationNuclear reactorHelium gas
The invention relates to a fuel rod for a water-cooled water-moderated nuclear reactor. In the proposed fuel rod, there is disposed below the fuel column a spacing element which forms a bottom plenum space and which is pressed against a bottom plug by the fuel column with the aid of a fastening spring. The spacing element consists of a housing in the form of a tube, which has stoppers press-fitted to the ends thereof, said stoppers having axially aligned through-openings and having slots in the outer end faces thereof for admitting helium into the inner cavity of the spacing element. The bottom plug has a stepped profile, and the middle portion thereof, which is disposed outside the cylindrical cladding, has a diameter that is greater than the outside diameter of the cylindrical cladding. The bottom end of the bottom plug has a toroidal surface, the cross-section of which is not greater than the outside diameter of the cylindrical cladding. The technical result is that of increasing the fuel charge, improving the energy efficiency and increasing the operating reliability and safety of a fuel rod for a water-cooled water-moderated nuclear reactor, as well as simplifying the assembly process, and facilitating repair in the event of depressurization of the fuel rod.
Owner:JOINT CO TVEL

Exception handling methods, apparatus, computer equipment and storage media

This application relates to an anomaly handling method, apparatus, computer equipment, and storage medium. The method includes: determining the validity of a valve group operating command sent from the master-slave control system to a bypass circuit breaker based on the current operating state of the valve group; determining anomaly handling logic based on the validity determination result; and applying the anomaly handling logic to perform anomaly handling on the master-slave control system. This method can effectively improve the operational reliability of DC transmission systems when anomalies are detected in a timely manner.
Owner:ANNING BUREAU OF ULTRA HIGH VOLTAGE TRANSMISSION