26results about How to "Avoid premature failure" patented technology

The invention relates to a dynamic balance control method between multi-cluster parallel battery clusters, a controller, a multi-cluster parallel battery cluster system and an energy storage system. The method comprises the following steps: acquiring the voltage of each battery cluster; under the condition that the voltage difference value of any two battery clusters is smaller than or equal to a first voltage threshold value, the voltage average value of each battery cluster is determined; if the target battery cluster exists, the working state of a first converter connected with the target battery cluster is controlled according to the difference value between the voltage of the target battery cluster and the voltage average value, so that the target battery cluster is charged or discharged until the difference value between the voltage of any battery cluster and the voltage average value is smaller than or equal to a second voltage threshold value; wherein the difference value between the voltage of the target battery cluster and the voltage average value is greater than the second voltage threshold value, and the first voltage threshold value is greater than the second voltage threshold value. By adopting the method, the balance among the battery clusters can be effectively realized, and the service life of the energy storage system is prolonged.

The invention discloses a femtosecond laser strengthening method for improving the surface integrity of a laser cladding high-temperature alloy, and belongs to the technical field of laser cladding postprocessing, and the femtosecond laser strengthening method comprises the following steps: S1, selecting a proper high-temperature alloy as a base material, and cleaning and pretreating the surface of the base material; s2, a cladding laser is started to clad the base material; S3, a femtosecond laser system is set, and the optimal light beam quality and energy density are obtained; according to the method, the cladding surface is strengthened through femtosecond laser, the defects of cracks, air holes and the like appearing on the material surface after laser cladding are effectively removed, the surface integrity is greatly improved, premature failure caused by the problems of stress concentration and the like in the using process of components can be prevented through elimination of the surface defects, the service life of the components is prolonged, and the production cost is reduced. The safety and stability of the key hot end component are guaranteed, and the surface integrity of the high-temperature alloy component can improve the service performance and reliability under extreme loads such as high temperature, high flow speed and high pressure in the fields of aerospace and the like.

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.

The invention discloses a relay control method based on temperature induction. The relay control method comprises the following steps: acquiring electrical equipment protected by a relay to obtain a current current value; obtaining a current-time limit mapping relation; determining an initial countdown time limit corresponding to the current current value based on the current current value and a current-time limit mapping relation; acquiring the current working temperature of the relay to obtain a current temperature value; calculating a final countdown time limit based on the current temperature value and the initial countdown limit; and controlling the relay to trip based on the final countdown time limit. Therefore, the inverse time limit characteristic and the temperature protection are organically combined, more accurate, reasonable and efficient overcurrent protection can be carried out, and the adaptability of the system to a complex operation environment is enhanced.

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.

The invention discloses a marine square pile with an anti-erosion structure, which is applied to the field of concrete building materials, and realizes that when metabolite of marine organisms excessively erodes an anti-erosion column, the anti-erosion column can be locally stripped, so that the marine organisms and the local part of the anti-erosion column are integrally separated from the anti-erosion column; the anti-erosion column and the square pile body are prevented from being excessively eroded by marine organisms, the structural strength of the square pile body is not prone to being affected, meanwhile, after the anti-erosion column is locally stripped, seawater flows into the anti-erosion cavity to dissolve the filling salt block, and under the effect of a relatively-closed three-dimensional space structure formed by the elastic fibers, the anti-erosion column and the square pile body are separated from each other. The release speed of high-salinity seawater dissolved with filling salt blocks is greatly slowed down, high-concentration salt water is released for a long time at stripped notches, marine organisms are repelled, excessive biological erosion is prevented from being locally generated on the anti-erosion column, and the anti-erosion column is not prone to failure in advance.

The present invention relates to a high-strength PP plastic and a preparation method, and belongs to the technical field of polypropylene materials. The preparation method mainly includes the preparation of a polyphenylene sulfide solution, the preparation of a polyphenylene sulfide fiber loaded with modified nano-silicon dioxide, and finally the melt extrusion of various materials, thereby obtaining a high-strength PP plastic. The present invention loads the modified nano-silicon dioxide on the polyphenylene sulfide fiber, and cooperates with components such as γ-chloropropyltrimethoxysilane and maleic anhydride grafted polypropylene resin to jointly improve the performance of the polypropylene material, and enhances the cross-linking structure between molecular chains through chemical bonding and physical entanglement, thereby enhancing the interface compatibility and stress transfer efficiency, significantly improving the strength of the material, and optimizing the overall performance of the material.

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.

This utility model relates to the field of aerogel felt technology and discloses a plug-in aerogel felt board, characterized in that it includes an insulation layer, a reinforcing mesh, and several snap-fit ​​components. The insulation layer includes aerogel felt, and the snap-fit ​​components include a fixing seat and a plug. The fixing seat is inserted into the aerogel felt and located at one end of the insulation layer. The end of the fixing seat located inside the aerogel felt is provided with several locking blocks. The plug is inserted into the aerogel felt and located at the end of the insulation layer away from the fixing seat. The end of the plug near the locking blocks has a stepped groove that can engage with each locking block. The reinforcing mesh is wrapped around the insulation layer. The outer wall of the reinforcing mesh is coated with cement mortar or organic adhesive to form a wrapping layer, or the outer wall of the reinforcing mesh is wrapped with an air-barrier membrane to form a wrapping layer. Wrapping the outer wall of the reinforcing mesh with a wrapping layer can effectively reduce dust shedding caused by the loose structure of the aerogel felt during use, thus avoiding dust pollution and preventing the aerogel felt itself from being damaged, which would lead to a decrease in insulation performance.

The embodiment of the invention provides a flash memory management method, which comprises the following steps of: dividing a flash memory space according to a preset rule to obtain a plurality of first to-be-stored areas; using the plurality of first to-be-used areas according to a time division multiplexing rule; recording the use times corresponding to the plurality of first to-be-used areas; when the number of use times corresponding to the first to-be-used area reaches a preset value, dividing the flash memory space again to obtain a plurality of second to-be-used areas; and using the plurality of second to-be-used areas. According to the scheme, the use frequency of each region is balanced, so that early failure of some regions due to excessive wear is avoided, and the total service life of the flash memory is prolonged. And the flash memory space is re-divided, so that the risk of data error and loss caused by abrasion is reduced, and the data reliability is improved. The invention further provides flash memory management equipment corresponding to the flash memory management method. The flash memory management equipment has the beneficial effects corresponding to the flash memory management method.

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 invention relates to the technical field of electronic control devices, in particular to a contact part and a relay. The contact part is provided with at least two parallel branches which are arranged in the same current path in parallel, each parallel branch is provided with a contact group, and each contact group comprises a movable contact and a static contact; at least two of the parallel branches form an alternating group; in the alternating groups, the movable contact and / or the static contact of each contact group comprises at least two electric contact layers, and each electric contact layer is arranged along the height direction of the corresponding movable contact or static contact.

The invention relates to the technical field of UV (ultraviolet) moisture curing adhesives, and discloses an LED (light-emitting diode) UV moisture curing adhesive and a preparation method thereof. 10%-30% of a reactive diluent; 1% to 5% of an LED photoinitiator; 2%-8% of a photoinduced latent moisture curing catalyst; 0.5%-2% of a chemical dewatering agent; 1%-6% of a functional auxiliary agent; wherein the sum of the mass percentages of all the components is 100%. A main chain of the dual-cured polyurethane acrylate resin is a polyurethane chain segment, and an acryloyloxy group and an alkoxy silane group are grafted on a molecular chain at the same time. According to the invention, an active linkage mechanism of light curing and moisture curing is constructed, so that illumination not only completes instant shaping of a surface layer, but also activates a high-activity moisture curing catalyst for a deep layer or a shadow area, so that a subsequent moisture curing reaction does not completely depend on natural permeation of environmental humidity any more, and the moisture curing effect is improved. And the reaction rate of internally curing the shadow region is obviously improved.

This invention discloses a method and system for monitoring and controlling the temperature of a liquid-cooled plate, belonging to the field of liquid cooling control. The method includes: acquiring operating parameters of multiple independent cooling loops; calculating, based on the operating parameters, the ideal coolant flow rate required for each cooling loop to reach a preset target outlet temperature under the current heat load; obtaining a heat dissipation efficiency index by comparing the ideal coolant flow rate with the actual coolant flow rate; differentially adjusting the cooling intensity of each cooling loop according to its heat dissipation efficiency index; monitoring the changing trend of the heat dissipation efficiency index of each cooling loop, and issuing early warnings based on the changing trend. This invention solves the problems of coolant performance degradation, decreased heat dissipation efficiency due to flow channel fouling, and increased risk of localized overheating in existing liquid cooling systems during long-term operation, thereby improving the operational reliability of the liquid cooling system.

The invention relates to the technical field of digital twinning, in particular to a digital twinning-based wind turbine generator full life cycle management system, which comprises a deformation parameter resolving module, a skeleton driving reconstruction module, a load damage calculation module, a health difference evaluation module and a balance control decision module. According to the method, the instantaneous curvature and the torsion rate are calculated by collecting cross section wavelength drift data, the dynamic bending posture of the flexible part in the space is reconstructed in real time, continuous tracking of stress circulation and a closed lag loop is achieved by combining pneumatic simulation and the residual peak-valley sequence stack technology, the accumulated damage degree of the part in the whole service cycle is accurately quantified, and the reliability of the part is improved. By analyzing the discrete deviation of individual damage relative to a group mean value, an asymmetric load distribution mechanism based on health state difference is established, the fatigue extension trend of high-damage parts is effectively relieved, premature failure caused by uneven load distribution is avoided, and life balance and collaborative life extension of key parts of a unit in the whole life cycle are achieved.

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 provides a kind of optical storage system cluster SOH equalization control method, device and electronic equipment, belong to energy storage technical field.The method includes determining the SOH average value and SOH standard deviation of the optical storage system cluster according to the SOH data of all energy storage subsystems, in the case where the SOH standard deviation is greater than or equal to a preset value, the SOH data of each energy storage subsystem is compared with the sum of the SOH average value and the SOH standard deviation, the corresponding power allocation strategy is determined according to the comparison result and the power allocation is carried out according to the power data.The application takes SOH standard deviation as a key decision indicator, dynamically switches the optical storage system cluster from "non-discriminatory working mode" to "differentiated protection mode", delays the decay rate of all energy storage subsystems, and prolongs the average life and discharge capacity of the entire cluster throughout the life cycle.

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 invention relates to a method for discovering and eliminating errors within a mapping process, the method being configured to transform an input file (IDB) into a map based on a transform instruction. Furthermore, the invention relates to a computer program and a storage medium.

This invention relates to the field of gearbox technology, and in particular to a gear shifting control system for a gearbox, comprising a flexible shift fork mechanism, a shift guide drum, a shifting control gear set, and a shifting control mechanism. The flexible shift fork mechanism includes a shift fork seat, a shift fork arm rotatably connected to the shift fork seat, and an elastic element for driving the shift fork arm to reset. When the shift fork arm swings relative to the shift fork seat, the elastic element drives the shift fork arm to reset. A shift guide groove is provided on the circumferential surface of the shift guide drum, and a shift fork protrusion is provided on the upper part of the shift fork seat, the shift fork protrusion being movably disposed within the shift guide groove. This invention uses a rotatable connection between the shift fork arm and the shift fork seat, resulting in low friction, more flexible shifting, and a longer service life for the elastic element. Furthermore, it effectively avoids damage to the ratchet teeth caused by ratchet grinding, jamming, or forced pulling, effectively extending the service life of the elastic element, the gear shifting control system, and the gearbox itself.

The utility model discloses a kind of inner concave connecting joint applied to umbrella structure, including the connecting joint of the special-shaped steel column upper end being set to the lower part of umbrella structure, the connecting joint includes inner support part and outer support part, inner support part is connected with the round steel column of special-shaped steel column, outer support part is annular dentiform structure and is evenly distributed in the circumferential direction of inner support part, outer support part lower end is connected with the box room column of round steel column outer side, upper end is connected with the main beam of umbrella structure, outer support part is located at the outer side of inner support part and jointly constitutes funnel shape, the bottom surface and top surface of outer support part are inclined upward conical part, outer support part lower end vertical part, vertical part is connected between the conical part of outer support part by smooth arc part.The utility model can improve the bending resistance and support stability of connecting joint.

The utility model relates to a kind of swing cylinder with bearing axial and radial load, including oil cylinder shell, the swing rotating shaft being set in the inside of oil cylinder shell can rotate, the both ends of swing rotating shaft are respectively equipped with the swing output flange that rotates with the rotation of swing rotating shaft, each swing output flange is sealedly connected between oil cylinder shell side wall and can rotate relative to the side wall of oil cylinder shell, the clearance between the end portion side wall of swing rotating shaft, the end portion inner wall of oil cylinder shell and the side wall of swing output flange is formed as installation clearance, the inside of installation clearance is equipped with the radial support mechanism that provides radial support to swing rotating shaft and the axial support mechanism that provides axial support to swing rotating shaft;The utility model overcomes the defect that traditional swing cylinder has limited bearing capacity, by innovatively integrating axial and radial composite support mechanism in end cap space, realize compact structure, improve bearing capacity, enhance rigidity and prolong service life.

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.

The utility model belongs to the technical field of desulfurization equipment, and particularly relates to a desulfurization device for preparing sulfide from hydrogen, which comprises a desulfurization tower and a boss on the outer side of the desulfurization tower, the fixing frame is located between the adjacent bosses of the middle reaction section of the desulfurization tower, is of a semi-circular structure, is coaxial with the desulfurization tower and is internally provided with an adsorbent filling mechanism, an opening groove is formed in the left side of the desulfurization tower and corresponds to the fixing frame, partition tables are fixed in the opening groove in a layered mode, and the fixing frame is located between the adjacent partition tables; a supporting frame parallel to the axis of the desulfurizing tower is arranged on the outer side of the boss, and guide rods extend out of the two end faces of the fixing frame and extend into the supporting frame. According to the utility model, a drawer type adsorbent replacement mechanism is formed by the layered fixing frames, the adsorbent replacement steps are simplified so as to shorten the shutdown time, and meanwhile, gas is uniformly dispersed in the adsorbents in different areas through a shunting structure at the bottom of the adsorbent filling mechanism, so that the problem of local advanced failure is avoided.

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.