Flow-equalizing device for large-flow single-inlet annular liquid-collecting cavity

The utility model pertains to the technical field of flow-equalizing devices of liquid-collecting cavities, in particular to a flow-equalizing device for a large-flow single-inlet annular liquid-collecting cavity. The flow-equalizing device comprises a flow path inlet, a primary large flow-equalizing cavity, radial flow-equalizing holes, a secondary small flow-equalizing cavity, a flow path outlet and a basal body of the liquid-collecting cavity. The flow path inlet is positioned at the upper portion of the basal body of the liquid-collecting cavity. The primary large flow-equalizing cavity is arranged at the lower portion of the flow path inlet. In the primary large flow-equalizing cavity, an inlet flow-equalizing plate is arranged under the position corresponding to the flow path inlet. Multiple through holes are formed in the inlet flow-equalizing plate so that a local flow-integrating effect is exerted. Therefore, pressure is basically and evenly exerted along the circumferential direction of the annular liquid-collecting cavity. In the meanwhile, local flow resistance is controlled to the lower level. The radial flow-equalizing holes are positioned in the backward position of the primary large flow-equalizing cavity and arrayed along the circumferential direction of the bottom of the large liquid-collecting cavity and connected with the secondary small flow-equalizing cavity. Therefore, a flow-equalizing function is exerted and local flow resistance is controlled to the lower level at the same time.