A trash rack experimental platform based on the formation of a free liquid surface in a closed water tank with a high water level in a short distance

Abstract

The invention relates to a trash rack test bench based on a high-water-level airtight water tank forming a free liquid surface in a short distance, which is used to solve the premise that the water pump can run more stably in the experiment due to the narrow space of the existing water pump laboratory equipment Under the current situation, it is difficult to form a free liquid surface in the experimental flow channel. Compared with the previous laboratory, in order to obtain a relatively stable free liquid surface, it needs to occupy too much experimental space, whether it is saving the test site or saving funds. The present invention has certain remarkable advantages. The installation process of the invention is simple and easy to operate, has high reliability, and reduces the workload of the installation workers of the experimental equipment to a certain extent. At the same time, the free liquid surface flow state obtained by the present invention is stable, and is also applicable to other experiments that need to obtain a free liquid surface.

Description

technical field [0001] The invention relates to a trash rack test bench based on the formation of a free liquid surface in a closed water tank with a high water level in a short distance, especially for a test bench with a small space or a high water level inlet tank where it is difficult to form a free liquid surface, and belongs to the technical field of pump station engineering . Background technique [0002] The trash rack has always been in an important position during the operation of the pump station. The quality of its trash rack performance will have a certain impact on the safety and stability of the pump during operation. In addition, during the use of the trash rack, the trash rack The volume and amount of dirt blocked on the trash rack will increase with the increase of use time. When it reaches a critical state, it will inevitably affect the water head before the grid and the water head behind the grid, so more and more Experts and scholars have conducted rese...

AI Technical Summary

Problems solved by technology

However, the study of the trash rack needs to form a free liquid surface in front of the trash rack. For the scientificity of the experiment and the universality of the verification experiment results, the experimental flow channel of the trash rack needs to be open or semi-open. Type, often because the water flow in the closed circulation pipeline is too fast, it is difficult to form a free liquid surface, and the simple control of the water volume in the inlet pool cannot meet the operation requirements of the laboratory circulating water pump. In order to obtain the free liquid surface, a trash rack is added The length of the experimental flow channel will occupy too much experimental space and increase a lot of unnecessary expenses

When the experimental flow channel of the trash rack is made open or semi-open in order to release the waste, water will often be spilled from the closed circulation device, which will pollute the laboratory environment, and even lead to safety accidents in serious cases. occur

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