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公开(公告)号：US20240018969A1
公开(公告)日：2024-01-18
申请号：US17781054
申请日：2021-07-16
申请人： JIANGSU UNIVERSITY
摘要： An impeller wake vortex dissipation device under stall condition of a mixed flow pump includes a guide vane and a wake vortex dissipation device. The pump is evenly divided into n guide vane channels by N evenly distributed guide vanes. A wake vortex dissipation device is set in each guide vane channel, and one end of the wake vortex dissipation device is fixedly connected to the inner wall of the pump body. Therefore, each wake vortex dissipation device is located in the middle and upper part of the guide vane channel and does not occupy the lower guide vane channel; the wake vortex dissipation device is provided with a dissipative hole pair, which are used to dissipate the energy of the wake vortex of the impeller.
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公开(公告)号：US20220356888A1
公开(公告)日：2022-11-10
申请号：US17623271
申请日：2021-07-22
申请人： JIANGSU UNIVERSITY
摘要： A pump front chamber automatic compensation device for improving closed impeller backflow is provided. The automatic compensation device is mounted on the inner wall surface of the pump body front chamber, extending from the inner wall surface of the pump body front chamber to the impeller front cover plate, stopping the flow of fluid from the impeller outlet to the pump front chamber. The automatic compensation device includes a spacer plate and a compensation feedback device. One end of the spacer plate extends into the pump front chamber, and the other end is connected to the automatic compensation assembly, through which the length of the spacer extension is automatically compensated. The pump front chamber automatic compensation device can prevent the fluid flowing out of the impeller outlet from entering the front chamber of the centrifugal pump, thus improving the operating efficiency and stability of the centrifugal pump.
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公开(公告)号：US20220120280A1
公开(公告)日：2022-04-21
申请号：US17598287
申请日：2019-12-20
申请人： JIANGSU UNIVERSITY
发明人： Wei LI , Hao CHANG , Weidong SHI , Ling ZHOU , Weidong CAO , Yong ZHU , Tao LANG , Yangyang WEI
摘要： A self-priming starting device for a centrifugal pump is mounted on a water inlet pipe of the centrifugal pump and includes an outer housing, an inner housing, a primary spacer, a secondary spacer, an opening and closing disc and a tertiary spacer which are sequentially provided in the outer housing from top to bottom, and an elastic steel plate provided in the water inlet pipe. A drum is provided in the inner housing, and air inlet pipes and air discharging pipes are provided on the inner housing. The drum is provided with drum chambers and a three-blade support is provided in the drum. The opening and closing disc is provided with a vertical rod. A gas-liquid cutter is provided between the primary spacer and the secondary spacer. The primary spacer, the secondary spacer, the opening and closing disc and the tertiary spacer are provided with through-holes.
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