Primary double-suction type guide blade structure of sectional type multi-stage pump

Abstract

The invention discloses a primary double-suction type guide blade structure of a sectional type multi-stage pump. The primary double-suction type guide blade structure comprises a primary double-suction type impeller and a secondary impeller which are sleeved on a shaft, wherein an outer ring of the primary double-suction type impeller is sleeved with a primary double-suction type guide blade, an outer ring of the secondary impeller is sleeved with a secondary guide blade, a non-driving end suction section is arranged between the primary double-suction type impeller and the secondary impeller, and the other side of the primary double-suction type impeller is provided with a driving end suction section corresponding to the non-driving end suction section. The primary double-suction type guide blade structure disclosed by the invention has the characteristics that the primary double-suction type impeller is adopted, thus medium from the primary double-suction type impeller can be more safely, reasonably and better guided to the secondary impeller, more stable relative motion of the medium in the impellers can be formed, the axial symmetry of medium flowing is ensured, the kinetic energy of high-speed liquid from the impellers can be converted into pressure energy, the using temperature and the using pressure of the sectional type multi-stage pump can be increased, the flow can be increased, and the cavitation erosion can be reduced.

Description

technical field [0001] The invention belongs to the technical field of fluid conveying machinery, and in particular relates to a first-stage double-suction guide vane structure of a segmented multistage pump of a horizontal barrel bag. Background technique [0002] The structure of the horizontal barrel pump is horizontal, multi-stage, radially split, cylindrical structure, and centrally supported petrochemical process pump. It is suitable for high temperature and high pressure working conditions, especially the working conditions that are prone to thermal shock The operation of flammable and toxic media with high delivery pressure is more reliable. The impeller guide vane structure of the existing horizontal barrel pump is mostly suitable for small flow conditions, and cannot meet the safe operation of large flow conditions. Contents of the invention [0003] The object of the present invention is to overcome the above disadvantages and provide a first-stage double-suctio...

AI Technical Summary

Problems solved by technology

[0002] The structure of the horizontal barrel pump is horizontal, multi-stage, radially split, cylindrical structure, and centrally supported petrochemical process pump. It is suitable for high temperature and high pressure working conditions, especially the working conditions that are prone to thermal shock The operation of flammable and toxic media with high conveying pressure is more reliable. The impeller guide vane structure of the existing horizontal barrel pump is mostly suitable for small flow conditions, and cannot meet the safe operation of large flow conditions.

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