57results about How to "Strong practical application" patented technology

The invention relates to a method for preventing freezing damage in cherry florescence. The method comprises: spraying NaHS solution on cherries in florescence in low temperature condition, the optimal concentration of the NaHS solution being 0.075 mmol / L. The method reduces damages on organs of cherry flowers by low temperature, and through detailed experiment design and analysis, an optimal spraying stage and spraying concentration are made clear. The method has great practical application significance on reducing waterlogging damage and reducing loss.

The invention relates to the field of enhanced geothermal well completion construction methods, in particular to a staggered high-efficiency enhanced geothermal injection-production single well structure and a well completion method thereof, including an inner pipe and an outer pipe arranged in a vertical well section, the inner pipe and the outer pipe The outer pipe is coaxially arranged, an annular space is formed between the inner pipe and the outer pipe, and a conversion mechanism is installed in the vertical well section below the inner pipe and the outer pipe, and the conversion mechanism is used to transfer cold water from it to It flows out to the central end of the bottom of the well, and is used to convert the hot water after heat exchange to the inner pipe for extraction. The overall structure design is convenient and reasonable, using the extension pipeline of the annular water injection center to inject water, so that the cold water flows out from the center, keeping the water temperature low to increase the temperature difference, improve the heat exchange effect, and high production efficiency; at the same time, considering the follow-up descaling problem , the use of conversion joints allows the hot water after heat exchange to be collected from the inner pipe, which realizes the water collection of the inner pipe and facilitates descaling in the later stage. It has good practical application significance and good economic benefits in actual use.

The present invention provides a method and system for locating the sound source of an equipment failure. The collected equipment sound signal is used as the signal to be analyzed, the signal to be analyzed is subjected to Fourier transform, and the fast spectral kurtosis index of the signal to be analyzed is calculated according to the transformation result. The fast spectrum kurtosis index determines the result of fault feature frequency selection; calculates the cross-spectrum matrix and the delay sum guide response according to the fault feature frequency selection result and the signal to be analyzed, and obtains the delay sum beamforming imaging result of fault frequency selection; the delay sum And the beamforming imaging results are input into the trained two-channel convolutional neural network to obtain the location information of the fault sound source. The invention has the advantages of good real-time performance, high positioning accuracy, strong generalization ability and the like.