5results about How to "Remarkable results" patented technology

The invention discloses preparation of p-methyl peptide and application of the p-methyl peptide in agriculture, and relates to the field of preparation of p-methyl peptide and application of the p-methyl peptide in plants, and the preparation method comprises the following steps: step 1, feeding and device building: adding a preset amount of L-alanine and ethylene glycol into a 250mL single-mouth round-bottom flask. As a natural cyclic dipeptide, the p-methyl peptide shows an excellent environment-friendly characteristic in plant stress resistance application. Compared with a traditional method depending on chemical fertilizers and pesticides, the method has the advantages that the method is non-toxic and harmless, soil hardening and water eutrophication caused by excessive use of the chemical fertilizers are avoided, quality safety of agricultural products is not affected as pesticide residues exceed the standard, and damage to non-target organisms and damage to ecological balance are avoided; the problem of environmental pollution caused by a traditional method is avoided from the source, and powerful support is provided for agricultural ecological environmental protection.

This invention belongs to the field of end-face sealing technology, specifically relating to a combined corrugated groove end-face sealing device consisting of a rotating ring and a stationary ring. The invention includes a rotating ring and a stationary ring that cooperate with each other through sealing end faces. The sealing end faces are respectively provided with corrugated grooves and notched grooves. The ring containing the corrugated groove is a wide ring, and the ring containing the notched groove is a narrow ring. The sealing end face width of the wide ring is greater than that of the narrow ring, and the notched groove is located on the outer ring surface of the narrow ring. The rotation path of the corrugated groove intersects with the cavity of the notched groove. This invention achieves an effective balance between sealing leakage and end-face lubrication, thereby providing continuous and effective lubrication and cooling for the friction pair of the end-face seal.

The utility model discloses a cyclone separation device for biomass circulating fluidized bed boiler, including cylinder, cone and corrosion -resistant center cylinder, the cone fixed mounting at the bottom of cylinder, the top of cylinder is equipped with the cover ring, the ring hole of cover ring is fixedly installed with the corrosion -resistant center cylinder, the lateral surface top of cylinder is equipped with the air inlet pipe, and the bottom end of center cylinder extends to the cylinder cavity of cylinder and is connected with the shunt head through the shunt head support, and the outer cylinder wall on the corrosion -resistant center cylinder in cylinder is equipped with spiral reinforcing rib, and the air inlet end of air inlet pipe is installed with the flow head. Advantageous effect lies in: separation efficiency is high, and separation effect is good, and the corrosion -resistant and anti -deformation ability of center cylinder is good, and the service life is long, and the existing cyclone separator is convenient to the reform, and the original structure does not need obvious change, and the replacement cost is low, and the effect is obvious, and prolongs the overall service life of circulating fluidized bed boiler.

The present application belongs to the technical field of stator manufacturing, and particularly relates to a stator design method for integrated general fluid machinery and a general fluid module. The stator design method for integrated general fluid machinery comprises the following steps: 1) determination of an electric drive diameter; 2) determination of an effective electric drive length; and 3) determination of a pole pitch. Through the above operation process, the operation efficiency and stability of the general fluid module applying the stator can be effectively ensured or even improved. Another object of the present application is to provide a general fluid module applying the stator design method, so that through integrated design, the intermediate connecting frame and the number of vulnerable components and friction loss are reduced, thereby further improving the overall efficiency of the unit.

This invention discloses an active support configuration method and equipment for urban power hollowing-out areas, comprising: based on typical urban power hollowing-out scenarios, comprehensively screening the requirements of typical scenarios, combining the characteristics of the equipment's VSC converter, and proposing an active support integrated solution through VSC control strategy improvement and reactive power system coordinated control. Based on the N-1 and N-2 stability results of a single fault scan, the installation site is calculated and the optimal site is selected for installation through local topology network characteristics, featuring simplicity, speed, efficiency, and economy. This method is applicable to urban power hollowing-out scenarios in the construction of new power systems in China, urban power grids with low short-circuit ratios, coastal urban power grids with large-scale renewable energy access, and receiving-end urban power grids with dense DC access, thus having a wide range of applications. The optimal site selection based on the grid topology, combined with functional integration using VSC characteristics, is more intensive and economical than conventional solutions.