Design method of a bell-shaped water inlet channel

Abstract

The invention relates to a design method for a bell-shaped water inlet flow way. Main geometrical parameters of the bell-shaped water inlet flow way comprise the suction chamber rear wall distance XT, the horn pipe diameter DL, the flow guide cone top round diameter d, the suction chamber height H2, the horn pipe height HL, the flow way height HW, the bell-shaped steering segment bell-shaped curve radius r1, the bell-shaped steering segment plane volute curve radius r2, the bell-shaped steering segment water guide round table curve radius r3 and the like of the water inlet flow way. By the adoption of the design bell-shaped water inlet flow way, the hydraulic efficiency of a pump station is improved, and the running stability of the pump station is improved; and computer programming is facilitated, and the original experience design method of the bell-shaped water inlet flow way is replaced to a great extent.

Description

technical field [0001] The invention relates to the technical field of pumping station systems, in particular to a design method of a bell-shaped water inlet channel. Background technique [0002] Bell-shaped water inlet channel is one of the commonly used forms of water inlet channel. Because the water pump suction chamber of the bell-shaped water inlet channel mostly uses a plane volute, it is customary to call it a plane volute water inlet channel. The bell-shaped water inlet flow channel is composed of several parts such as the inlet section, the water suction chamber, the water guide cone and the trumpet tube. After the water flow enters the inlet section of the flow channel from the forebay, the water flow is guided by the water suction chamber to the annular channel between the trumpet pipe and the water guide cone and enters the water pump impeller chamber. [0003] The bell-shaped water inlet design method in the prior art does not provide a systematic design meth...

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Problems solved by technology

However, its main parameters still rely on the experience of engineers and technicians, and no systematic and precise design method is given, and it is difficult to achieve computer programming applications and computer-aided design.

[0005] In view of the above-mentioned defects, the inventor invented a design method for the bell-shaped water inlet channel, which not only provides a systematic and accurate design method for the main parameters of the bell-shaped water inlet channel, but also solves the problem of unstable operation of the pumping station. problems, enhance the reliability of the pumping station operation, improve the overall hydraulic efficiency of the pumping station, and most importantly, help computer programming applications and computer-aided design, which can largely replace the original empirical design method of the bell-shaped water inlet channel

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