GB/T 33208-2016 in English
SUPERSEDEDNon-destructive testing--Practice for the blades on-line monitoring based on tip-timing theory
- Issued on:2016-12-13
- Implemented on:2017-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$88.00
《GB/T 33208-2016无损检测 基于叶尖定时原理的叶片在线监测方法》由SWG22（全国设备结构健康监测标准化工作组）归口，主管部门为国家标准化管理委员会。
Introduction
1. Background and purpose of the standard
GB/T33208-2016 "Non-destructive testing blade online monitoring method based on the blade tip timing principle" is an important national standard in China for large rotating machinery blade vibration monitoring. This standard aims to standardize the blade online monitoring technology based on the blade tip timing principle to ensure the safety and reliability of equipment operation.
2. Comparison of standard frameworks
| Standard dimensions | GB/T33208-2016 | International similar standards |
|---|---|---|
| Technical principle | Based on the blade tip timing principle, the blade vibration signal is measured by sensor | Contact or grating speed measurement technology is mostly used |
| Scope of application | Large rotating machinery such as steam turbines, fans, and water turbines | Mainly used in the aerospace field |
| Monitoring parameters | Vibration frequency, amplitude, phase difference, etc. | Speed, acceleration, stress distribution |
3. Technical implementation specifications
3.1 Monitoring system composition
The monitoring system consists of four parts: sensor, demodulation module, data acquisition and processing module and computer application software. The core components are as follows:
- Tip timing sensor: used to capture blade vibration signals, with fast response characteristics.
- Speed synchronization sensor: provides rotor rotation reference signal.
- Demodulator: realizes signal filtering, amplification and transmission.
3.2 Sensor Arrangement and Selection
Depending on the mechanical design, a variety of sensor distribution schemes can be selected, such as “2+1”, “4+1” or arbitrary angle distribution. Specific parameter requirements:
| Sensor type | Response speed | Operating temperature range |
|---|---|---|
| Capacitive sensor | >200kHz | -100℃ to 350℃ |
| Fiber optic sensor | >200kHz | -150℃ to 650℃ |
3.3 Data Collection and Analysis
Data collection adopts dynamic or static mode, supporting real-time and offline analysis. The system software needs to implement:
- Synchronous vibration analysis: frequency, amplitude, and phase detection.
- Asynchronous vibration analysis: frequency multiplication detection and Campbell diagram display.
4. Implementation suggestions
To ensure the effective implementation of the standard, it is recommended to:
- Establish a professional monitoring team and conduct regular technical training.
- Select and install sensors in strict accordance with standard requirements to ensure the accuracy of signal acquisition.
- Develop a detailed maintenance plan and regularly check the status of the equipment.
- In the data analysis stage, conduct in-depth analysis in combination with GB/T19873.2 and generate standardized reports.
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 40117-2021 in English
Non-destructive testing - Evaluation of vision acuity of NDT personnel
2021-05-21 -
GB/T 44525-2024 in English
Non-destructive testing—Ultrasonic testing—Specification for resin matrix composite reference block
2024-09-29 -
GB/T 5616-2014 in English
Non-destructive Testing - Guidelines for Application
2014-05-06 -
GB/T 43413-2023 in English
Non-destructive testing—Infrared thermographic testing—General principles for thermoelastic stress measuring method
2023-11-27 -
GB/T 18694-2002 in English
Non-destructive testing - Ultrasonic inspection - Characterization of search unit and sound field
2002-03-10 -
GB/T 36212-2018 in English
Non-destructive testing—Acoustic testing method and evaluation for the cement bond of underground metal component
2018-05-14 -
GB/T 46978-2026 in English
Non-destructive testing—Methods of alternating current field measurement (ACFM) for metal structures
2026-01-28 -
GB/T 12604.14-2024 in English
Non-destructive testing—Terminnology—Part 14:Visual testing
2024-11-28 -
GB/T 39238-2020 in English
Non-destructive testing—Ultrasonic testing—Examination for discontinuities perpendicular to the surface
2020-11-19 -
GB/T 40730-2021 in English
Non-destructive testing—Measuring thickness by electromagnetic ultrasonic pulse-echo
2021-10-11
