Abstract: A method for optimizing the blade axis position of a water pump under all operating conditions which includes determination of multiple calculation conditions within the range of all the operating conditions of the water pump, three-dimensional modeling and mesh generation of the calculation area of the flow field of the water pump at multiple blade angles, numerical simulation of the flow field and calculation and determination of blade hydraulic torques under multiple conditions, determination of the range of the position of the blade resultant hydraulic pressure action line and an optimal blade axis position under all the operating conditions, determination of the small region of the optimal blade axis position under all the operating conditions, determination of the optimal blade axis position, and comparison of the blade hydraulic torques before and after optimization of the blade axis position.

Abstract: A large high reliability air-cooled motor with an optimal ventilation system belongs to the technical field of reliability of electromechanical power equipment, and includes calculating a flow resistance of the ventilation system and selecting the two ventilators, determining a ventilation flow rate, calculating a heating quantity and temperature rises of the motor, determining main influence factors of the temperature rise, determining random numerical characteristics of main influence factors, generating possible minimum and maximum values of running temperatures under different environment temperatures, calculating the reliability degree of the running temperature rise of the motor, creating relations between the motor temperature rise reliability and the cross-sectional area of a ventilation slot at multiple environment temperatures when one ventilator and two ventilators running respectively, and providing a motor with high reliability of temperature rise by using optimal ventilation slot area and choosi

Abstract: The present disclosure provides a method, a terminal device and a storage medium for mining an entity description tag. The method includes: acquiring a group of one or more core words corresponding to each field and a first syntax dependent template corresponding to each core word; performing a matching on each data in a first data source by using the first syntax dependent template to determine a first description tag set in each field; performing a recognition on each data in a second data source to determine an entity set; determining a second description tag set based on a matching degree between each description tag in the description tag set of each field and each data in the second data source; and determining an entity description tag set based on a correlation between each entity in the entity set and each description tag in the second descriptive tag set.

Abstract: The present disclosure provides a method, a terminal device and a storage medium for mining an entity description tag. The method includes: acquiring a group of one or more core words corresponding to each field and a first syntax dependent template corresponding to each core word; performing a matching on each data in a first data source by using the first syntax dependent template to determine a first description tag set in each field; performing a recognition on each data in a second data source to determine an entity set; determining a second description tag set based on a matching degree between each description tag in the description tag set of each field and each data in the second data source; and determining an entity description tag set based on a correlation between each entity in the entity set and each description tag in the second descriptive tag set.

Abstract: A prediction method for reliability degree of running temperature rise of a large and medium-sized motor belongs to the technical field of reliability and durability of electromechanical power equipment, and includes determining main influence factors of the temperature rise of a motor winding, calculating the heating quantity and the temperature rise of the motor under influences of the determined factors, determining random numerical characteristics of the main influence factors of the temperature rise of the motor winding, calculating and determining possible minimum values and possible maximum values of running temperatures of the motor winding under different environment temperatures, calculating and determining reliability degrees when the running temperature of the motor winding is less than a given temperature under different environment temperatures, and calculating and determining the reliability degree of the running temperature rise of the motor winding.

Abstract: A method for optimizing the blade axis position of a water pump under all operating conditions which includes determination of multiple calculation conditions within the range of all the operating conditions of the water pump, three-dimensional modeling and mesh generation of the calculation area of the flow field of the water pump at multiple blade angles, numerical simulation of the flow field and calculation and determination of blade hydraulic torques under multiple conditions, determination of the range of the position of the blade resultant hydraulic pressure action line and an optimal blade axis position under all the operating conditions, determination of the small region of the optimal blade axis position under all the operating conditions, determination of the optimal blade axis position, and comparison of the blade hydraulic torques before and after optimization of the blade axis position.