5results about How to "Avoid fault" patented technology

The utility model relates to the technical field of coatings, in particular to a water-based evaporation-resistant waterproof paint coating, which comprises a waterproof primer and a buffer paint layer coated on the waterproof primer, and a compression-resistant layer is further coated on the buffer paint layer.

The application provides a method for detecting the depth of a conduit in concrete, which comprises the following steps: obtaining the medium density of the space between a first pressure sensor and a second pressure sensor on the conduit, and determining the first space position type of the space between the first pressure sensor and the second pressure sensor on the conduit; obtaining the first medium type corresponding to the position of a first vibration sensor and the second medium type corresponding to the position of a second vibration sensor, and determining the second space position type of the space between the first vibration sensor and the second vibration sensor on the conduit; if the first space position type and the second space position type are consistent, determining the first depth information based on the medium density, determining the second depth information based on the vibration signal, and determining the target depth information according to the first depth information and the second depth information. Through the method, the detection reliability can be improved by avoiding the single signal misjudgment, and the depth detection precision is improved by comprehensively calculating the target depth.

The invention discloses a lubricating oil service life prediction method and system based on multi-index fusion and a medium, and relates to the field of lubricating oil service life assessment, and the method comprises the steps: carrying out the principal component analysis of a plurality of physicochemical indexes based on a lubricating oil sample data set, and obtaining a principal component score matrix; performing data splitting and recombination on the lubricating oil sample data set according to different numbers of physicochemical index combination modes; based on the principal component score matrix and the data set under various physicochemical index combinations, determining an optimal physicochemical index combination by adopting a multivariate linear fitting and score comparison mode; weighting each physicochemical index in the optimal physicochemical index combination; based on the evolution law of each physicochemical index along with the running mileage in the optimal physicochemical index combination and the corresponding weight, establishing a multi-index fusion lubricating oil service life prediction model; and predicting the service life of to-be-tested lubricating oil by using the lubricating oil service life prediction model. According to the method, the multi-index coupling relationship under limited data is deeply excavated, so that the service life of the lubricating oil is accurately predicted.

This utility model discloses a grounding strip with a braided structure, belonging to the field of lightning protection grounding technology, including a graphite braided strip and a reinforcing braided layer. The graphite braided strip is formed by weaving graphite wires. The reinforcing braided layer is a layered structure formed by weaving a mixture of reinforcing wires and graphite wires, and the layered structure of the reinforcing braided layer is arranged circumferentially along the interior of the graphite braided strip. The graphite braided strip, woven from graphite wires, provides excellent conductivity and corrosion resistance. The reinforcing braided layer, formed by weaving a mixture of reinforcing wires and graphite wires, enhances the mechanical strength of the grounding strip and reduces the probability of damage or breakage. The mixed weaving of graphite wires and reinforcing wires serves as a structural transition, avoiding discontinuities or abrupt changes in the resistivity of the graphite braided strip, which would lead to an increase in overall grounding resistance and a reduction in current discharge efficiency. The integrated braided structure gives the grounding strip both flexibility and strength, facilitating installation and transportation.

This application belongs to the field of nuclear power operation technology, specifically relating to a pressure stabilizing device for a containment negative pressure measurement reference end in a nuclear power plant. The device includes: a mesh filter, an air filter, a solenoid valve, a first buffer tank, an electrically controlled regulating valve, and a straight-through connector, all connected sequentially. The other end of the solenoid valve is also connected to the straight-through connector via a second buffer tank. The device consists of a main circuit and a bypass circuit, enabling multi-stage coordinated operation and dynamic adjustment. Even under severe external turbulence, the pressure value at the measurement end remains within the threshold range. The device's buffering and filtering capacity remains normal even if the solenoid valve or the electrically controlled regulating valve fails.