Submersible tubular pump drainage system with high-thrust water-lubricated bearing structure

Abstract

The invention discloses a submersible tubular pump drainage system with a high-thrust water-lubricated bearing structure. The submersible tubular pump drainage system comprises a drainage pipeline and a submersible tubular pump arranged in the drainage pipeline, wherein a water inlet chamber of the submersible tubular pump is connected to a first flow channel at the downstream end of the drainage pipeline, a guide vane body of the submersible tubular pump is connected to a second flow channel at the upstream end of the drainage pipeline, and the first flow channel and the second flow channel are in a horn mouth shape gradually expanding outwards in the direction away from the submersible tubular pump. According to the submersible tubular pump drainage system, due to split casting of the water inlet chamber, an impeller part and the guide vane body, machining, manufacturing, assembling and disassembling are facilitated, step-by-step installation of the tubular pump is facilitated, meanwhile, the strength and rigidity of a main shaft are improved, then the safety and reliability of a unit are improved, and the whole device is not limited by the sealing performance, so that the large-scale whole structure can bear the thrust of 100 tons, after the cast submersible tubular pump is installed in the drainage pipeline, the large-flow fluid conveying requirement of the drainage system is met.

Description

technical field [0001] The invention relates to the field of water conservancy transportation, in particular to a drainage system of a submersible tubular pump with a large-thrust water-lubricated bearing structure. Background technique [0002] Drainage system refers to the overall combination of drainage collection, transportation, water quality treatment and discharge and other facilities in a certain way. The pumping station is one of the components of the drainage system. The pumping station often uses a tubular pump to pump out the fluid; the tubular pump is a kind of horizontal axial flow pump, which is a low-lift axial flow pump. The motor, deceleration device and water pump form a whole and are installed in the machine pit inside the underwater dam. The water inlet and outlet channels are located on a straight line, approximately straight cylindrical, with less hydraulic loss, high water lifting efficiency, and compact structure. Installation , Easy maintenance, si...

AI Technical Summary

Problems solved by technology

[0003] Due to structural reasons, the existing tubular pumps have a maximum blade diameter of 2.3m, and the maximum thrust that the internal rolling bearings can withstand usually only reaches 20 tons. On the premise of meeting the sealing performance, it cannot meet a larger thrust. Demand, can not meet the fluid transport demand of large flow of drainage system, so it needs to be solved urgently

Images