9results about How to "Avoid premature failure" patented technology

The utility model discloses a manual valve with electric drive part can install, the utility model relates to valve technical field, including valve body subassembly and assembly subassembly, the valve body subassembly includes valve body, be provided with the mounting cover on the valve body, be provided with valve stem on the mounting cover, the top of valve stem even has been seted up recess, has been seted up screw hole on the valve stem, through setting recess and screw hole on the valve stem, the positioning is convenient to the axle body, sets up bolt no.

This invention belongs to the field of engineered wood products manufacturing, specifically a method for preparing low-formaldehyde finger-jointed boards based on bio-based modified adhesives. The method includes preparing an adhesive composed of modified soybean protein, non-formaldehyde crosslinking agents, micro / nano cellulose, nano-silica, and epoxidized vegetable oil elastomers; pre-treating the wood and cutting the finger joints; applying a sealing liquid via atomization for end-face damping treatment; performing quantitative adhesive application and stepped butt joint molding; and employing a multi-stage hot-pressing process involving preheating penetration, high-temperature curing, and cooling and pressure holding. Through the above technical solution, this application can achieve the formation of a dense adhesive film at the finger joint interface, significantly improving bonding strength and stability while reducing formaldehyde release.

This invention discloses a tensile-strength steel-cored aluminum stranded wire, relating to the technical field of steel-cored aluminum stranded wire. The tensile-strength steel-cored aluminum stranded wire of this invention comprises at least: a steel core; a Zn-Ni-WC composite coating, electroplated on the steel core; aluminum strands, stranded on the steel core coated with the Zn-Ni-WC composite coating; and an anti-corrosion coating applied to the stranded aluminum strands. The anti-corrosion coating comprises the following raw materials in parts by weight: 60-70 parts of long-chain modified polyurethane acrylate prepolymer; 25-30 parts of acrylate isoborneol ester; 15-20 parts of dopamine-modified sustained-release microcapsules; 2-5 parts of photoinitiator; 0.5-1.5 parts of leveling agent; and 0.5-1.5 parts of dispersant. This invention, by setting a Zn-Ni-WC composite coating on the steel core and an anti-corrosion coating on the steel-cored aluminum strands, enables the prepared tensile-strength steel-cored aluminum stranded wire to possess superior corrosion resistance and ultra-long-term tensile strength retention.

The application discloses a prefabricated optical cable fiber connector mechanical performance enhancement system of a smart substation, relates to the technical field of optical communication of the smart substation, and comprises a data acquisition module, an environmental stress modeling module, a risk simulation module and a strategy fusion module. The system collects connector parameters and in-station environmental data, constructs a comprehensive stress model, analyzes vibration interference spectrum and natural frequency by using a modal matching device, generates a resonance avoidance strategy, analyzes periodic thermal stress and connector structure by using a thermodynamic simulator, generates a deformation compensation scheme, and finally fuses and outputs a composite enhancement strategy. The system can accurately predict and avoid the resonance risk of the connector and a specific electromagnetic vibration source, effectively compensate the cumulative deformation caused by the periodic thermal stress, and thus improve the long-term mechanical reliability and optical transmission stability of the connector in a complex in-station environment before deployment.

The utility model provides a kind of bearing assembly, gear box and wind generating set, the bearing assembly is used to be installed between first component and second component relatively rotating, the bearing assembly includes: bearing inner ring, for with the first component engagement;Bearing outer ring, can rotate relative to the bearing inner ring and is used to with the second component engagement;And elastic component, including at least one of first elastic component and second elastic component, wherein, the first elastic component can be located between the radial outer surface of the bearing outer ring and the second component, the second elastic component can be located between the radial inner surface of the bearing inner ring and the first component.Bearing assembly according to the utility model can absorb or compensate local load in radial direction, can prolong the service life of bearing, prevent its premature failure.

The application relates to a vanadium flow battery energy storage power distribution method, device and system, and relates to the technical field of energy storage energy management. The method comprises the following steps: performing online parameter identification processing on an acquired equivalent loss model to determine battery identification parameters of a plurality of battery groups; determining the health states of the plurality of battery groups according to the battery identification parameters, original battery resistances and resistance values at a time of scrapping; determining the charging and discharging priorities of the plurality of battery groups according to the battery states of charge and the health states; selecting a plurality of target battery groups participating in power distribution from the plurality of battery groups according to total scheduling demand power and the charging and discharging priorities; determining a multi-objective function with the minimum battery working loss, the minimum state of charge uniformity and the minimum total life loss as targets according to the battery identification parameters and the battery states of charge, and constructing a multi-objective optimization model; and solving the multi-objective optimization model based on constraint conditions to obtain target power distribution results of the plurality of target battery groups.

The present application relates to the technical field of pulse power and electromagnetic manufacturing, and discloses a pulse magnetizing machine, which comprises a charging module, a capacitor matrix module, an acquisition module and a control module; the acquisition module synchronously acquires voltage and current discrete sequences at the discharge moment in a Kelvin four-wire structure; the control module is based on a heterogeneous architecture of a digital signal processor and a field programmable gate array, uses a regularized least square algorithm to identify equivalent resistance and inductance parameters of a load in real time, and adopts a closed-loop control logic based on single waveform reverse analysis as a system core; a Newton iteration method is used to solve nonlinear equations to reconstruct the capacitor matrix and accurately lock the pulse width; at the same time, the charging voltage is corrected by combining an iterative learning algorithm, the capacitor discrete quantization deviation is compensated, and the peak current is locked. The present application realizes adaptive compensation of the magnetizing waveform to load parameter drift, and significantly improves the current repetition accuracy and the operation life of the system.

This utility model discloses a MOSFET testing system, including a power management unit, a main control unit, a drive module, a test interface, a testing module, and a communication module. The main control unit is electrically connected to the power management unit, the drive module, the testing module, and the communication module. The drive module is electrically connected to the test interface and the testing module. The testing module includes a detection processor, a static test module, and a dynamic test module. The static test module and the dynamic test module are electrically connected to the detection processor, and the detection processor is electrically connected to the main control unit. By setting up a detection processor, a static test module, and a dynamic test module, this utility model can detect both the static and dynamic parameters of the MOSFET, thereby enabling immediate detection of faults in the power protection device. Feedback can be promptly sent through the communication unit, allowing staff to check and clear the fault in a timely manner, improving the safety and reliability of the smart power protection device.

The utility model relates to the field of structural engineering anti-seismic technology discloses a new buckling restrained device, and the device adopts the innovative multilevel restraint system design, including core component, restraint component and preloading component, and core component and restraint component are both double -deck structure, and restraint component is sleeved in the core component outer layer, and preloading component sets up in the both ends of core component, and core component includes square corrugated board and cross support board, and square corrugated board is combined by four corrugated boards, and every corrugated board is intermittently welded with cross support board, and through optimizing wave geometry parameter and grading restraint system, the critical buckling load is improved by more than 50%, and single weight control is below 180kg / m, adopts numerical control hydraulic forming and modular assembly process, improves construction efficiency, and is especially suitable for high-rise building and large-span bridge engineering in high intensity area.