| 摘要 |
FIELD: measurement technology; instruments for measuring flow and volume of liquids in pressure pipelines. ^ SUBSTANCE: proposed transducer is prefabricated modular structure designed for in-service replacement of its components. Transducer has barrel-shaped sealed case and hold-down device with spring that functions to tightly press piezoid to case bottom, to compensate for changes in size of structure due to temperature fluctuations, and to ensure reliable acoustic contact between piezoid and case bottom. ^ EFFECT: ability of in-service replacement of working members during pressure relief without opening the pipeline. ^ 5 cl, 3 dwg |
