IMPROVED PITOT TUBE WITH DURABILITY AND ACCURATE MEASUREMENT

摘要

The present invention relates to a''pitot tube'', which is a representative device for measuring the flow rate and/or flow rate by inserting a measuring unit into the center of the tube among methods of measuring the flow rate and/or flow rate of a fluid. a) To solve the durability problem (fatigue failure due to vibration for a long period of time) of the Pitot tube, and (b) to eliminate interference by fluid for more stable and precise measurement. The present invention includes a separation wall formed across the outer wall and the inner space of the outer wall, an upper and lower connection pipe formed of the separation wall and the outer wall, and the upper and lower connection pipes are shear pressure pipes formed up and down in a high pressure region It includes a rear end pressure pipe formed up and down in a low pressure region, and the outer wall includes a shear pressure hole formed to communicate with the shear pressure pipe and a rear end pressure hole formed to communicate with the rear pressure pipe, and protrude from the outer surface of the outer wall up and down. It is inserted into the tube to be measured and measures the flow rate and/or flow rate, characterized in that it further comprises a spiral protrusion formed by winding in a spiral shape so as to be continuous, and a spiral groove formed between the spiral protrusion and the spiral protrusion formed upward and downward. By presenting a Pitot tube, etc., it is possible to increase the rigidity of the Pitot tube and prevent fatigue failure due to vibration (dynamic stress), and according to the present invention, it is possible to secure economical efficiency in the process of manufacturing the Pitot tube according to the present invention. .