Pitot-Static Tube System to Measure Discharges from Wells
Publication: Journal of Hydraulic Engineering
Volume 126, Issue 5
Abstract
Pumps are widely used to lift water into canals, and usually spill directly into the canal. Upstream pipe fittings frequently produce a distorted flow profile that is detrimental to the proper installation and operation of common pipe meters. Thus, meter calibration may be necessary when the pipe length upstream of the meter is less than recommended. Meter calibrations under field conditions can be difficult and expensive. A simple pitot tube system that can be clamped to the outlet of the pump discharge pipe was built and tested for measuring and calibrating pump discharges under field conditions. It is used to detect the velocity at several points across the pipe diameter; distorted profiles can be measured. Using this information, the meter technician can determine whether a correction in the meter coefficient will suffice and if flow conditioning equipment is working effectively. The system can be constructed using common shop techniques and standard small pipe fittings. Most previous pitot systems required special ports in the pipe or used special concentric tube constructions that are difficult to build.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Bean, H. S., ed. (1971). Fluid meters, their theory and application, 6th Ed., ASME, New York.
2.
Fluid meters, their theory and application. (1959). 5th Ed., ASME, New York.
3.
Henderson, F. M. (1966). Open channel flow. Macmillan, New York.
4.
Miller, R. W. (1996). Flow measurement engineering handbook, 3rd Ed., McGraw-Hill, New York.
5.
Replogle, J. (1999). “Measuring irrigation well discharges.”J. Irrig. and Drain. Engrg., ASCE, 125(4), 223–229.
6.
Replogle, J. A., Huggins, L. F., and Black, R. D. (1962). “Discharge ratings of a drop inlet for a small farm pond.” Trans. Am. Soc. of Agric. Engrs., 5(2), 210–211, 217.
7.
Scott, R. W. W. (1982). Developments in flow measurement—1. Applied Science Publishers, London and N.J.
8.
Water Measurement Manual. (1997). 3rd Ed., U.S. Department of the Interior, Denver.
Information & Authors
Information
Published In
History
Received: Jan 11, 1999
Published online: May 1, 2000
Published in print: May 2000
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.