Double outlet type volute centrifugal pump with high specific speed

Abstract

The invention discloses a double outlet type volute centrifugal pump with a high specific speed. An impeller is arranged at an annular opening of the inner side of a double outlet type volute, the bottom of the impeller is connected to a water suction pipeline, and two water outlets of the double outlet type volute are connected to water outlet pipelines; blades of the impeller are of cylindrical-like twisting structures, and the front and back surfaces of the blades are in smooth connection from top to bottom by curved surfaces with different curvatures; and the water suction pipeline, the impeller and the center of the double outlet type volute are in the same axis. The double outlet type volute centrifugal pump discharges water bidirectionally through the two water outlets, so that theeffluent efficiency of the centrifugal pump is improved. Meanwhile, the speed component of a water flow in the circumferential direction of the volute is enhanced, the water flow condition at the outlets of the volute are improved, and the hydraulic loss is reduced, so that the centrifugal pump has good hydraulic performance and operating efficiency.

Description

technical field [0001] The invention relates to a high specific speed double outlet volute centrifugal pump, which belongs to the technical field of centrifugal pumps. Background technique [0002] The main flow parts of the centrifugal pump are the impeller and the pressurized water chamber. The pressurized water chamber is also called the volute because of its gradually diffused shape. The volute is a necessary place for the centrifugal pump to discharge fluid and pressurize the fluid, so its hydraulic structure has a crucial impact on the efficiency of the centrifugal pump. [0003] At present, people's research on the volute of centrifugal pumps is mainly focused on the area and shape of the section, the area of ​​the throat, and the placement angle of the tongue. The number of outlets of the volute has not been changed and the design and optimization have not been made to improve the pump efficiency. [0004] Therefore, how to overcome the deficiencies of the prior art...

AI Technical Summary

Problems solved by technology

[0003] At present, people's research on the volute of centrifugal pumps is mainly focused on the area and shape of the section, the area of ​​the throat, and the angle of the tongue, etc. The number of outlets of the volute has not been changed and the design and optimization have not been made to improve the pump efficiency.

Images