Novel vortex-preventing cone for water feeding of water pump

Abstract

The invention relates to a novel vortex-preventing cone for water feeding of a water pump, belonging to the technical field of hydraulic engineering. The vortex-preventing cone is arranged under a suction flared pipe nozzle of the water pump, the tip of the vortex-preventing cone is just opposite to the center of the suction flared pipe nozzle of the water pump, vortex-preventing teeth are arranged on the conical surface of the vortex-preventing cone, and the plane area of the vortex-preventing cone is more than the area of the suction flared pipe nozzle of the water pump. The uneven vortex-preventing teeth are arranged on the conical surface of the vortex-preventing cone, and the section shape of a rack of the vortex-preventing teeth is rectangular or triangular or trapezoidal. A cone axial line of a flat cone and a pipe core line of a suction flared pipe of the water pump are arranged on the same straight line. The invention has the advantages of simple and scientific structure and reasonable design; the primary basis of a vortex strip is destroyed from the starting point of the vortex strip, circular quantity of water flow in a water inlet region can not accumulate, and the condition of generating high-intensity vortexes is deprived, the water flow in the water inlet region is smooth, the pressure fluctuation is reduced, and the pump vibration is avoided. The invention is suitable for inlets of various water pumps, ensures no vortex or corresponding hydraulic vibration, reduces hydraulic loss and improves properties of pumps.

Description

Technical field [0001] The invention relates to an anti-vortex facility provided in front of a pump inlet horn pipe mouth of an irrigation and drainage pumping station, which provides a good water inlet condition for a water pump inlet, and belongs to the technical field of water conservancy engineering. Background technique [0002] The intake pool of medium and small irrigation and drainage pumping stations is a structure that directly absorbs water from the suction pipe of the water supply pump, and has a free water surface. For axial flow pumps and guide vane mixed flow pumps, the horn tube is the transition section between the inlet pool and the inlet of the impeller chamber. The flow pattern in the horn tube is inevitably affected by the flow pattern in the inlet pool. Between the bottom of the horn tube and the bottom of the pump station The height of is the suspended height of the horn tube. [0003] The main function of the inlet pool is to provide good water inlet condit...

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Problems solved by technology

[0004] In order to obtain good water inlet conditions in the existing pumping stations, diversion piers and deflectors are installed in the inlet pool, but these engineering measures can only improve the overall flow velocity distribution, and have no significant preventive effect on the bottom vortex. Aiming at the common problems faced by many small and medium-sized pump station inlet tanks, designing a device with obvious anti-vortex and vortex elimination effects has great significance and application value. It can not only solve the actual problems of pump station engineering, but also solve the same problems. Various industrial pumps can also use the anti-vortex and anti-vortex device

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