Abstract: A flexible guide vane structure of a mixed flow pump with adjustable flow area, a mixed flow pump and an adjustment method are provided. The flexible guide vane structure includes a flexible guide vane and a flexible guide vane adjusting device. The flexible guide vane adjusting device includes a support rib, a support rib base and a base driving mechanism. As the skeleton of the flexible guide vane, the support rib realizes the shape change of the flexible vane through the base driving mechanism and the support rib base. In the mixed flow pump, the flexible guide vane adjusting device is installed inside the blade hub. Through the flow section feedback regulation system, the angle of the support rib is adjusted based on the real-time working condition of the mixed flow pump to adjust the flow area of the blade and achieve the best working condition.

Abstract: 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.

Abstract: A flexible guide vane structure of a mixed flow pump with adjustable flow area, a mixed flow pump and an adjustment method are provided. The flexible guide vane structure includes a flexible guide vane and a flexible guide vane adjusting device. The flexible guide vane adjusting device includes a support rib, a support rib base and a base driving mechanism. As the skeleton of the flexible guide vane, the support rib realizes the shape change of the flexible vane through the base driving mechanism and the support rib base. In the mixed flow pump, the flexible guide vane adjusting device is installed inside the blade hub. Through the flow section feedback regulation system, the angle of the support rib is adjusted based on the real-time working condition of the mixed flow pump to adjust the flow area of the blade and achieve the best working condition.

Abstract: 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.