GB/Z 35717-2017 Replaced National standards

GB/Z 35717-2017 Discharge measurement for hydraulic turbines,storage pumps and pump-turbines—Ultrasonic transit-time method

Publish Date: 2017-12-29 Implement Date: 2018-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/Z 35717-2017

Standard Type: National standards

Standard Status: Replaced

is_force_gb: no

CCS Name: \nHydraulic turbines and their auxiliary equipment

ICS Name: Hydraulic engineering

Publish Date: 2017-12-29

Implement Date: 2018-07-01

Pages: 28 pages

Scope

This guidance technical document provides an ultrasonic propagation time method for flow measurement of water turbines, storage pumps, and pump-turbines, including measurement principles, testing methods and calibration, and measurement uncertainty. This guidance technical document is applicable to on-site flow measurement of water turbines, storage pumps, and pump-turbines in pressurized flow channels with circular or rectangular cross-sections, where the diameter or equivalent diameter is not less than 0.8 m; it is not applicable to flow measurement in model tests of water turbines, storage pumps, and pump-turbines. This guidance technical document is applicable to flow measurement using ultrasonic propagation time devices with internal or external transducers (hereinafter referred to as flow measurement devices), but it is not applicable to flow measurement using ultrasonic flowmeters with external transducers.

Development Information

Word Count: 44 Thousand words Pages: 28 pages

Superseded by the following standards

GB/T 35717-2024 Discharge measurement for hydraulic turbines,storage pumps and pump-turbines—Ultrasonic transit-time method

Referenced Standards

JJF 1358-2012 Calibration Specification for DN1 000～DN15 000 Liquid Ultrasonic Flowmeters Calibration by Non Practical Flow Method IEC 60041-1991 ISO 12242:2012 ASME PTC 18-2011