Piezometric tube connecting structure

Abstract

The invention relates to a piezometric tube connecting structure, and aims to optimize the firmness and the sealing performance of a piezometric tube during installation. The piezometric tube connecting structure is characterized by comprising a buckling structure, a positioning structure and a sealing structure, wherein the buckling structure comprises a pressing ring on the leading-out end of a piezometric tube, a small flange, a large flange machined on the wall of a tube to be measured and the like; the positioning structure is composed of a positioning key processed on the leading-out end of the piezometric tube and a positioning groove processed on the wall of the tube to be measured; and the sealing structure is composed of an O-shaped rubber gasket and the buckling structure. During installation, after the O-shaped rubber gasket is nested at the lower end of the leading-out end of the piezometric tube, the end with the small flange is pressed into a hole processed on the wall of the tube to be measured; and during pressure measurement, fluid in a to-be-measured flow channel enters the piezometric tube, and then the purpose of pressure measurement is achieved.

Description

technical field [0001] The invention relates to a connection structure of a pressure measuring tube, which belongs to the technical field of "G01L7 / 18 experimental device" in the international patent classification. Background technique [0002] In the fluid mechanics experiment, the experimental equipment such as the Bernoulli equation test bench and the local resistance coefficient test bench are widely used in the pressure measuring device of the piezometric tube. The lead-out of the piezometric tube needs to be drilled at the place to be tested in the flow channel, and a certain connection and sealing technology is used to make the flow channel of the piezometric tube communicate with the flow channel to be tested. The pipes of fluid mechanics experimental teaching equipment are generally made of acrylic material. The traditional connection method is to drill holes on the wall of the pipe to be tested, insert the leading end of the piezometric tube of the same material i...

AI Technical Summary

Problems solved by technology

However, during the experiment, it was found that the lead-out end of the piezometric tube adhered by acrylic glue was easy to fall off, and the sealing effect between the lead-out end of the piezometer tube and the drilled hole of the pipe wall to be tested was poor, which easily caused large measurement errors and poor test bench position. Water leakage and other problems will affect the experimental results

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