Abstract: A test-bed for a pump as turbine transition process based on digital twinning is provided, including a PAT physical model used for controlling the pump as turbine transition process and collecting data of the pump as turbine transition process; a PAT twinning data system used for processing the data of the pump as turbine transition process to obtain a measurement database; a PAT twinning virtual system used for carrying out numerical simulation on the pump as turbine transition process based on the measurement database to obtain a value obtained by numerical simulation of a PAT virtual system; and a PAT service system used for processing the value obtained by the numerical simulation of the PAT virtual system, obtaining an optimal operation strategy and feeding the strategy back to the PAT physical model, and updating the measurement database at the same time.

Abstract: A test-bed for a pump as turbine transition process based on digital twinning is provided, including a PAT physical model used for controlling the pump as turbine transition process and collecting data of the pump as turbine transition process; a PAT twinning data system used for processing the data of the pump as turbine transition process to obtain a measurement database; a PAT twinning virtual system used for carrying out numerical simulation on the pump as turbine transition process based on the measurement database to obtain a value obtained by numerical simulation of a PAT virtual system; and a PAT service system used for processing the value obtained by the numerical simulation of the PAT virtual system, obtaining an optimal operation strategy and feeding the strategy back to the PAT physical model, and updating the measurement database at the same time.

Abstract: Disclosed in the disclosure is a method for matching a guide vane and an outlet passage of a low-lift pump station, including: collecting original data of a target pump station, and selecting, according to the original data, a combination pattern for combined adjustment of an axial length of a guide vane blade, a placement angle of a guide vane outlet and a diameter of the guide vane outlet by classification; and optimizing the combination pattern for combined adjustment of the axial length of the guide vane blade, the placement angle of the guide vane outlet and the diameter of the guide vane outlet, to obtain an optimal parameter combination scheme. According to the disclosure, the hydraulic performance of the guide vane is improved, the hydraulic loss of the outlet passage is reduced, and the efficiency of a pump device is enhanced.

Abstract: A pump machine unit optimized operation regulation system is provided, and includes a physical body, a digital twin, a digital twin body of the physical body and a digital space. The digital space drives the digital twin to realize data mirroring, mapping reconstruction, information interactive feedback and simulation of a pump machine unit optimized regulation system in virtual space and a pump machine unit optimized regulation system in physical space. The disclosure constructs the virtual twin body of the physical body of the pump system based on the digital twin to realize the data mirror and information interaction between the physical body and the virtual twin body, and physical object twin, operation process twin and control performance twin of the physical entity and digital twin body. Running state monitoring, optimized regulation, simulation and health prediction of the pump machine unit can be realized.

Abstract: The invention discloses a kind of single shaft driven level 3 of axial flow pump, including: power source, pumping out, transmission shaft, export fixed vane, the third stage impeller, the second impeller, the first stage impeller, imported fixed vane, pump inlet, the first transmission cone gear, the first cone gear transmission device, the second driving cone gear and the second cone gear transmission device, the invention can realize the opposite steering of the two adjacent impellers by fixing the guide vane and the bevel gear transmission in the impeller hub. With compact structure and small axial size, this single-shaft driven three-stage counter-rotating axial-flow pump can greatly improve the head of the axial pump and widen the efficient zone.

Abstract: A pump machine unit optimized operation regulation system is provided, and includes a physical body, a digital twin, a digital twin body of the physical body and a digital space. The digital space drives the digital twin to realize data mirroring, mapping reconstruction, information interactive feedback and simulation of a pump machine unit optimized regulation system in virtual space and a pump machine unit optimized regulation system in physical space. The disclosure constructs the virtual twin body of the physical body of the pump system based on the digital twin to realize the data mirror and information interaction between the physical body and the virtual twin body, and physical object twin, operation process twin and control performance twin of the physical entity and digital twin body. Running state monitoring, optimized regulation, simulation and health prediction of the pump machine unit can be realized.

Abstract: The invention discloses a kind of single shaft driven level 3 of axial flow pump, including: power source, pumping out, transmission shaft, export fixed vane, the third stage impeller, the second impeller, the first stage impeller, imported fixed vane, pump inlet, the first transmission cone gear, the first cone gear transmission device, the second driving cone gear and the second cone gear transmission device, the invention can realize the opposite steering of the two adjacent impellers by fixing the guide vane and the bevel gear transmission in the impeller hub. With compact structure and small axial size, this single-shaft driven three-stage counter-rotating axial-flow pump can greatly improve the head of the axial pump and widen the efficient zone.