4results about How to "Reduce volume ratio" patented technology

This invention relates to the field of petroleum refining and chemical engineering, and discloses a method for hydrogenating waste tire pyrolysis oil. The method includes the following steps: (1) in the presence of hydrogen, the waste tire pyrolysis oil raw material undergoes a gas-phase desulfurization reaction in a first gas-phase hydrogenation reactor to obtain a gas-phase desulfurization reaction product; (2) the gas-phase desulfurization reaction product is subjected to gas-liquid separation to obtain a gas-phase component and a liquid-phase component; (3) the liquid-phase component is pressurized and mixed with hydrogen, and then subjected to a liquid-phase dearomatics reaction in a second hydrogenation reactor to obtain a liquid-phase dearomatics reaction product; the nitrogen content in the waste tire pyrolysis oil raw material is 3000-10000 μg / g. This method uses waste tire pyrolysis oil from the middle distillate as raw material, achieving deep desulfurization while reducing the removal of nitrogen oxides and monocyclic aromatic hydrocarbon saturation. It also simplifies the overall process flow, reduces the reaction severity, and lowers energy and hydrogen consumption.

The utility model discloses a shooting device and a surgical field shooting device, in the technical scheme of the shooting device, a first stator and a first rotor are parts with larger volume proportion in a first brushless motor, and the first stator and the first rotor are accommodated in a first mounting groove of the shooting device; according to the technical scheme, the first stator and the first rotor do not need to occupy the internal space of the installation holder, so that the installation of different overall volumes is reduced, the installation holder is small and exquisite, the first brushless motor can be prevented from being directly exposed, and the overall appearance structure of the shooting equipment is simpler and more compact; compared with the mode that the first stator and the first rotor are installed in the installation holder, the mode that the first stator and the first rotor are installed in the first installation groove enables the volume increase proportion of the shooting device to be small, namely the volume of the shooting device is not obviously increased, and therefore the whole appearance of the shooting device can be kept simple and small. Application and installation of the shooting equipment are facilitated.

The application discloses a photovoltaic system and a capacity-ratio control method. The photovoltaic system comprises a DCAC converter, N DCDC converters and a controller, wherein N is an integer greater than or equal to 2; an input end of each DCDC converter is used for connecting a corresponding photovoltaic string, and output ends of the N DCDC converters are all connected to an input end of the DCAC converter; the controller is used for controlling M DCDC converters in the N DCDC converters to work in a conduction state when it is necessary to reduce a capacity ratio of the photovoltaic system, and stopping energy of corresponding photovoltaic strings from entering the DCAC converter; and M is an integer greater than or equal to 1 and smaller than N. After the capacity ratio of the photovoltaic system is reduced, the output power of the DCDC converter will be improved, so that the power generation capacity of the photovoltaic system is improved, and the power generation efficiency is improved.

The application discloses a transformer magnetic integration structure integrating double direct-current inductors and leakage inductors and an integration method thereof. In order to overcome the problems of complex magnetic core structure design, large leakage magnetic flux and lack of universality of the integration method in the prior art, the application uses a single standard EE magnetic core to realize integration of double direct-current inductors, leakage inductors and transformers by reasonably designing winding connection mode and air gap parameters for the transformer with three magnetic element structures of direct-current inductor, leakage inductor and transformer. Compared with separate magnetic components, the application can reduce the number of magnetic elements of the transformer, reduce the volume proportion of the magnetic components in the transformer, further reduce the volume of the transformer system, improve the power density, simplify the magnetic core design, reduce the manufacturing complexity of the magnetic integration structure, suppress the unbalanced current of the two side column windings, realize high-efficiency and high-power-density operation of the system, and improve the stability and reliability of the system operation.