GB/T 40709-2021 in English
VALIDTechnical requirements for swell compensator of trailing suction hopper dredger
- Issued on:2021-10-11
- Implemented on:2022-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$97.00
| Standard No: | GB/T 40709-2021 |
| Document status: | VALID |
| Title in English: | Technical requirements for swell compensator of trailing suction hopper dredger |
| Title in Chinese: | 耙吸挖泥船波浪补偿器技术要求 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2021-10-11 |
| Implemented on: | 2022-05-01 |
| ICS Classification: | 47.020.20-Marine engines and propulsion systems |
| Chinese Classification: | U34-Special devices for auxiliary vessel and survey vessel |
| Professional Classification: | GB-National Standard |
| Related Keywords: | technical requirements
requirements hydraulic cylinder standard technical framework core components key technical indicators suction hopper dredger introduction analysis |
| Related Topics: | wave
Compensator streaming technology compensation double wall compensator wave reactor complement technique wave mixer dredger dose compensation wave tank GBT40709 GB/T 40709-2021 rake compensator technology |
《GB/T 40709-2021耙吸挖泥船波浪补偿器技术要求》由TC530（全国港口标准化技术委员会）归口，TC530SC1（全国港口标准化技术委员会疏浚装备分会）执行，主管部门为交通运输部。
Introduction
Analysis of standard technical framework
| Core components | Key technical indicators | Test requirements |
|---|---|---|
| Hydraulic cylinder | Lifting force1.4-2.4 times the pulling force of the rake head winch | GB/T13342 full-item detection |
| Accumulator | Volume ≥8 times the volume of the hydraulic cylinder | GB/T150 series pressure test |
Key technologies of hydraulic system
Article 5.2 of the standard specifies the dynamic compensation coefficient of the hydraulic cylinder top lift. In actual operation, it is recommended to set it according to the sea conditions:
- For sea conditions below level 3, take a coefficient of 1.4 times
- For sea conditions of level 4-5, it needs to be increased to more than 2.0 times
Safety protection system
The application case of a certain type of 8500m³ trailing suction hopper shows that:
After adopting the dual redundant safety valve group configuration, the system failure rate is reduced by 62%.
Additional suggestions:
1. Add real-time monitoring of hydraulic cylinder displacement
2. Install pressure fluctuation alarm on accumulator
Implementation suggestions
- The pulley diameter must strictly meet the requirement of 20 times the wire rope diameter
- It is recommended to test the nitrogen pressure of the accumulator every month
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
