High-Accuracy Flow Rate Measurement for Water Supply and Dredged Slurry Transport Pipelines
High-Accuracy Flow Rate Measurement for Water Supply and Dredged Slurry Transport Pipelines

Author:

Publisher:

Published: 1997

Total Pages: 165

ISBN-13:

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The conventional techniques for high-accuracy ultrasonic flow measurement using multiple chordal paths in a pipe require drilling holes in the pipe for inserting the sensors. Under the Construction Productivity Advancement Research (CPAR) program, a research project was jointly undertaken by ORE and the U.S. Army Corps of Engineers for development of a new flow meter. The product developed is an externally mounted acoustic flow meter. The advantages of the 'clamp-on' type flow meter are as follows: (a) no contact with the fluid, (b) no welding or cutting of pipe necessary, (c) no operational shutdown needed for installation, repairs, or maintenance, (d) quick and easy installation, and (c) low cost of installation. The technology consists of the following: (a) conformal phased array transducers applied to a prepared surface at four to six locations on the exterior of the pipeline, and (b) a signal processing unit that generates acoustic signals for transmission between pairs of transducers installed above; receives and time-compresses the signals; determines precise acoustic travel times between one or more transducer pairs; and employs these measured travel times to determine the flow rate using algorithms well known to the flow measurement industry. The transducers are constructed of a relatively new material, PVDF. This material is found to be ideal for a flexible production transducer easily installable in the field conforming to a variety of pipe exterior dimensions. The new meter is a differential travel-time acoustic meter. The system measures the difference in travel time between signals propagating upstream and downstream between multiple pairs of transducers. Under no-flow conditions the travel time in each direction will be the same.

Slurry Flow
Slurry Flow

Author: C A Shook

Publisher: Elsevier

Published: 2013-10-22

Total Pages: 337

ISBN-13: 1483292207

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Slurry Flow: Principles and Practice describes the basic concepts and methods for understanding and designing slurry flow systems, in-plan installations, and long-distance transportation systems. The goal of this book is to enable the design or plant engineer to derive the maximum benefit from a limited amount of test data and to generalize operating experience to new situations. Design procedures are described in detail and are accompanied by illustrative examples needed by engineers with little or no previous experience in slurry transport. The technical literature in this field is extensive: this book facilitates its use by surveying current research results and providing explanations of mechanistic flow models. This discussion of background scientific principles helps the practitioner to better interpret test data, select pumps, specify materials of construction, and choose measuring devises for slurry transport systems. The extensive range of topics covered in Slurry Flow: Principles and practice includes slurry rheology, homogeneous and heterogeneous slurry flow principles, wear mechanisms, pumping equipment, instrumentation, and operating aspects.

Proceedings of the 5th International Symposium on Water Resource and Environmental Management
Proceedings of the 5th International Symposium on Water Resource and Environmental Management

Author: Haoqing Xu

Publisher: Springer Nature

Published: 2023-06-10

Total Pages: 268

ISBN-13: 3031312899

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This book is designed to be the introductory work in the new Sustainable Development of Water Resource and Environmental Management Series and provides an in-depth look at sustainable development and management in the water sector across. In the face of current global changes, the availability and quality of water resources are under severe threat. Indeed, in all sectors related to water resources management, sustainable development is important for present and future generations. This book includes selected papers from the 5th International Symposium on Water Resource and Environmental Management (WREM 2022) and consists of themes pertaining to water resource and environmental management. It provides readers with comprehensive information on the principles of sustainable water resources management, as well as recent advances, directions for future research, and policy development for sustainable water resources management. As a reference, it is of interest to students, scientists, engineers, government officials, and water resource managers.

Slurry Transport Using Centrifugal Pumps
Slurry Transport Using Centrifugal Pumps

Author: K. C. Wilson

Publisher: Springer Science & Business Media

Published: 2008-03-28

Total Pages: 456

ISBN-13: 9780387232621

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1,1 Applications of Slurry Transport Vast tonnages are pumped every year in the form of solid-liquid mixtures, known as slurries. The application which involves the largest quantities is the dredging industry, continually maintaining navigation in harbours and rivers, altering coastlines and winning material for landfill and construction purposes. As a single dredge may be required to maintain a throughput of 7000 tonnes of slurry per hour or more, very large centrifugal pumps are used. Figures 1-1 and 1-2 show, respectively, an exterior view of this type of pump, and a view of a large dredge-pump impeller (Addie & Helmley, 1989). The manufacture of fertiliser is another process involving massive slur- transport operations. Li Florida, phosphate matrix is recovered by huge draglines in open-pit mining operations. It is then slurried, and pumped to the wash plants through pipelines with a typical length of about 10 kilometres. Each year some 34 million tonnes of matrix are transported in this manner. This industry employs centrifugal pumps that are generally smaller than those used in large dredges, but impeller diameters up to 1. 4 m are common, and drive capacity is often in excess of 1000 kW. The transport distance is typically longer than for dredging applications, and Chapter 1 Figure LI. Testing a dredge pump at the GIW Hydraulic Laboratory Figure 1. 2. Impeller for large dredge pump 1. Introduction 3 hence a series of pumping stations is often used. Figure 1-3 shows a boost- pump installation in a phosphate pipeline.

Slurry Systems Handbook
Slurry Systems Handbook

Author: Baha Abulnaga

Publisher: McGraw Hill Professional

Published: 2002-04-29

Total Pages: 634

ISBN-13: 9780071375085

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Publisher's Note: Products purchased from Third Party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entitlements included with the product. The most comprehensive resource on slurries and slurry systems, covering everything from fluid mechanics to soil classification, pump design to selection criteria Slurries are mixtures of liquids and solid particles of all types. For instance, liquid is used as a way of transporting what you get out of the mine, which might be better than shoveling it into freight cars and carrying it out by train. Slurry systems are fundamental to dredging, many mineral processes, bridge and tunnel construction, and to the manufacturer of synthetic petroleum products from oil sands.