Composite tubular pump device

Abstract

The invention relates to a composite tubular pump device which comprises a water inflow runner (1), a semi-vertical semi-bulb water inflow structure, a horizontal water pump unit and a water outflow runner (10) which are connected sequentially, wherein the semi-vertical semi-bulb water inflow structure comprises a metal shell; the metal shell comprises an upper vertical well (6) and a lower bulb body (7), wherein the cross section shape of the upper vertical well is a walnut-shaped streamline shape with two tip ends and a large middle part; the maximal width of the upper vertical well is the same with the maximal diameter of the lower bulb body; and a motor (2) of the horizontal water pump unit and a transmission device (4) are installed in the metal shell. The semi-vertical semi-bulb water inflow structure is adopted for the composite tubular pump device provided by the invention, and integrates the advantages of a vertical-well-type tubular pump device and a bulb-type tubular pump device, thus a favorable water inflow condition can be provided for the water pump, the energy property and cavitation erosion of the water pump are exerted, the structure is compact, the ventilation and heat radiation conditions are good, the pump unit is convenient to install and overhaul, and the composite tubular pump device is good for running and managing.

Description

technical field [0001] The invention relates to a tubular pump, in particular to a composite tubular pump device, which is mainly used in technical fields such as water conservancy and hydropower projects, cross-basin water diversion projects, water environment improvement projects, urban water supply and drainage and flood control projects. Background technique [0002] As we all know, the tubular pump is a kind of horizontal axial flow pump, which is composed of a motor, a deceleration device and a water pump. It is installed in the machine pit inside the underwater dam, and the water inlet and outlet channels are located on a straight line, approximately a straight circle. cylindrical. [0003] In the low-lift pumping station, the commonly used tubular pump devices mainly include several types of water pump device structures such as bulb through flow and shaft through flow, which are helpful for reducing the excavation depth of the pump room, improving the water inlet con...

AI Technical Summary

Problems solved by technology

The bulb tubular pump device installs the motor and the transmission device in a bulb-shaped metal shell, which has a compact structure, but is expensive, requires high sealing, ventilation and heat dissipation, and is difficult to maintain

The vertical shaft tubular pump device installs the motor, transmission device, etc. in an open shaft. The vertical shaft tubular pump device has good ventilation, heat dissipation and moisture-proof conditions, and is relatively convenient for operation and maintenance. The unit structure is simple, but the hydraulic performance is generally not very ideal.

Images