A Submersible Tubular Pump Drainage System with Large Thrust Water Lubricated Bearing Structure

Abstract

The invention discloses a drainage system of a submersible tubular pump with a large-thrust water-lubricated bearing structure, which includes a drainage pipeline and a submersible tubular pump arranged in the drainage pipeline. The first flow channel at the downstream end of the pipeline is connected, the guide vane body of the submersible tubular flow pump is connected with the second flow channel at the upstream end of the drainage pipeline, and the first flow channel and the second flow channel are along the The direction gradually expands the shape of the bell mouth. Due to the separate casting of the water inlet chamber, the impeller part and the guide vane body, the present invention is convenient for processing, manufacturing, assembling and disassembling, facilitates the step-by-step installation of the tubular pump, improves the strength and rigidity of the main shaft at the same time, and further improves the safety of the unit Reliability; since the whole device is not limited by the sealing performance, the large-scale overall structure can withstand a thrust of up to 100 tons; after the cast submersible tubular pump is installed in the drainage pipeline, it meets the large-flow fluid transportation of the drainage system need.

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

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