5results about How to "Overcome longevity" patented technology

The application provides a kind of to identify batch electronic product average life evaluation method, it is related to the technical field of reliability engineering and life evaluation, solve the technical problem that average life evaluation method in prior art is difficult to accurately evaluate the average life of the batch electronic product.The method comprises establishing a segmented life distribution model, the segmented life distribution model includes a first stage life distribution model and a second stage life distribution model separated by a segmentation point time T, and the segmented life distribution model satisfies the parameter constraint relationship at the segmentation point time T;Wherein, the first stage life distribution model adopts an exponential distribution model with failure rate λ;The second stage life distribution model adopts a Weibull distribution model;Based on the segmented life distribution model, the average life of the batch electronic product is calculated and obtained by applying the average life analytical expression.The application can improve the calculation efficiency and calculation accuracy.

The invention provides a life-economy combined constraint-based large-scale configuration optimization method and system for an electrochemical energy storage system, and relates to the technical field of energy storage planning of an electric power system. According to the method, a life loss grading library and life budget constraints are constructed by obtaining load requirements, electricity price rules, operation constraints and energy storage module parameters; calculating the accumulated life consumption of the candidate configuration scale based on the operation instruction and a preset charging and discharging strategy, cutting the configuration which does not meet the life and operation constraint, and carrying out economical efficiency sorting in combination with the investment cost, the operation maintenance cost, the life loss conversion cost and the residual value income; and an optimal configuration result and an operation strategy are output through a combined checking and backspacing mechanism, so that collaborative optimization of the service life bearability and the economical efficiency is realized, and the long-term stability and the implementation of the configuration result are improved.

The invention provides a vortex atomization liquid drainage and gas production device and method, and belongs to the technical field of liquid drainage and gas production of natural gas wells. The device is used for being installed in an oil pipe and is provided with an atomization part, the atomization part is provided with a connecting pipe with two open ends and an injection pipe with only one open end, the first open end of the connecting pipe is communicated with a tubular vortex forming part, and the second open end of the connecting pipe is communicated with a first through hole formed in the closed end of the injection pipe. A second through hole is formed in the side wall of the injection pipe, the second through hole communicates with one end of a first channel, the other end of the first channel is used for communicating with a third through hole formed in the oil pipe, and gas-liquid two-phase fluid enters from the end, away from the first opening end of the connecting pipe, of the vortex forming part; and the gas-liquid two-phase fluid is sprayed out from the end part, far away from the second opening end of the connecting pipe, of the spraying pipe. The device can discharge the accumulated liquid in the shaft without the help of external force, and is simple in structure and free of movable parts.

This invention discloses a redox-active metal-organic framework material, its preparation method, and its applications. The metal-organic framework material is prepared by a solvothermal method using bis(triphenylaminetetracarboxylic acid) and inorganic manganese compounds as raw materials, N,N-dimethylformamide, deionized water, and 1,4-dioxane as solvents, and hydrochloric acid as a catalyst. The metal-organic framework of this invention exhibits good crystallinity and thermal stability, and possesses reversible redox activity. Electrochromic devices prepared using this framework display three different color transitions.

The utility model discloses an automobile engine shell with a damping function, which relates to the technical field of automobile engine shells and comprises a shell main frame, an extension frame is integrally formed at the upper end of the shell main frame, and two limiting top plates are mounted on the inner wall of the extension frame. Threaded penetrating holes are formed in the centers of the interiors of the two limiting top plates correspondingly. The limiting screw rod is movably arranged in the two threaded penetrating holes in a penetrating mode, a damping shock absorber and a rotating handle are welded to the two ends of the limiting screw rod correspondingly, and the size of the damping shock absorber and the size of the rotating handle are both larger than the hole diameter of the threaded penetrating holes; the problems that according to an existing automobile engine shell, an automobile engine in the shell is subjected to buffering and damping treatment through an external damping mechanism, the occupied space of the shell can be increased due to the fact that the shell is provided with the damping mechanism, damage is likely to happen, the automobile engine shell is inconvenient to install, and the service life is affected are solved.