5results about How to "Consistent workmanship" patented technology

The invention relates to the technical field of electrical performance research of insulating materials, and discloses a simulation method and system for surface charges of a basin-type insulator, a terminal and a medium, and the method comprises the steps: building a simulation model for the surface charges of the basin-type insulator through obtaining dark current data of a gas side; the gas side dark current data are set as boundary conditions of a basin-type insulator surface charge simulation model physical field, surface charge distribution characteristic calculation under any gas and gas pressure is achieved, and the method is not limited by the problem that diffusion coefficients, recombination coefficients, ion pair generation rates and migration coefficient parameters of positive and negative ions of existing gas are limited; the physical field calculation model is solved according to boundary conditions in the divided adaptive grid division, charge distribution and electric field distribution characteristics are obtained, basin-type insulator surface charge simulation is completed, the calculation efficiency is improved, and the accuracy of simulation of the surface charge distribution characteristics and spatio-temporal evolution laws of key insulators in direct-current GIS / GIL is improved.

An eccentric cutting clamp system of a hydraulic torque converter assembly comprises a positioning driving device, a lever floating pressing device and a positioning column aligning device. According to the eccentric cutting clamp system for the hydraulic torque converter assembly, the lever floating pressing device replaces an original axial spring type pre-pressing device, an axial spring is changed into a radial spring, potential safety hazards of manual clamping are eliminated, and meanwhile the clamping force is increased through centrifugal force; according to the eccentric cutting clamp system for the hydraulic torque converter assembly, the positioning driving device and the positioning column aligning device replace a positioning clamping mechanism and a positioning auxiliary supporting component, so that positioning and driving clamping are separately designed; the hydraulic torque converter assembly is suitable for increasing the length-diameter ratio of the pump wheel shaft sleeve of a product and (or) obviously changing the coaxiality deviation value of the pump wheel shaft sleeve and the positioning column, and the over-positioning phenomenon is eliminated.

The invention discloses a strong-acid-corrosion-resistant carbon-loaded platinoid all-alloy nano material and a preparation method thereof, and relates to the technical field of new energy materials. The preparation method of the carbon-loaded platinoid all-alloy nano material comprises the following steps: dispersing a carbon carrier in a solvent, adding platinum and copper precursors, dispersing, and adsorbing at constant temperature to obtain a suspension mixed solution; drying by distillation, drying and grinding to obtain a solid compound; calcining in an inert atmosphere, and cooling to obtain a carbon-supported platinoid material; and carrying out strong acid corrosion treatment, washing, drying and grinding to obtain the strong acid corrosion resistant carbon-loaded platinoid all-alloy nano material. The prepared material can keep the crystal structure stable in a strong acid environment and has excellent acid corrosion resistance, and the platinum-copper nano material takes platinum as a solvent and copper as a solute to form a complete alloy phase with the atomic ratio of copper to platinum being greater than or equal to 1: 1. When the material is used as an oxygen reduction catalyst, the atom utilization rate of platinum is high, and meanwhile, the oxygen reduction reaction catalytic activity and long-term stability of the material are remarkably improved.

The invention discloses a construction method suitable for suspended splicing rapid construction of UHPC (Ultra High Performance Concrete) composite beam segments and a construction method thereof, which are applied to connection construction of the composite beam segments consisting of a composite bridge deck slab and a steel main beam, and the composite bridge deck slab at least consists of an upper UHPC bridge deck slab and a lower bridge deck slab steel bottom plate. Welding and connecting a side web plate of the steel main beam, a bottom plate of the steel main beam, a middle web plate of the steel main beam and the bridge deck slab steel bottom plate at the joint of each composite beam section to form an annular welding joint of the composite beam sections; the circumferential welding joints of the adjacent composite beam sections are welded and connected through the PBL steel structure inlaying sections to form a complete closed steel box. The wet joint lagging construction can be realized.

The silicon carbide fiber wear resistance testing device comprises an unwinding mechanism, grinding roller sets, a guide ring set and a winding mechanism, the grinding roller sets comprise the first grinding roller set and the second grinding roller set, the first grinding roller set is arranged between the unwinding mechanism and the guide ring set, and the second grinding roller set is arranged between the guide ring set and the winding mechanism; the guide ring set comprises a first-stage guide ring, a second-stage guide ring, a third-stage guide ring, a fourth-stage guide ring and a tension adjusting mechanism, the first-stage guide ring and the second-stage guide ring are obliquely arranged to form a guide-in ring set, the fourth-stage guide ring and the third-stage guide ring are obliquely arranged to form a guide-out ring set, and the guide-in ring set and the guide-out ring set are arranged in a front-back staggered mode in the vertical plane direction. The tension adjusting mechanism is arranged between the leading-in ring set and the leading-out ring set. Compared with the prior art, through the special friction pair design of the grinding roller and the guide ring group, the tension grading control and the multi-section friction path simulation, the test cost is reduced, the detection efficiency is improved, and the real friction scene of the silicon carbide fiber weaving process is comprehensively adapted.