SL 280-2019 in English
VALIDTechnical specification for application of large and medium -scale sprinkler irrigation system
- Issued on:2019-02-11
- Implemented on:2019-05-11
- File Format:PDF
- Delivery:Via email within 1~3 business days
$388.00
| Standard No: | SL 280-2019 |
| Document status: | VALID |
| Title in English: | Technical specification for application of large and medium -scale sprinkler irrigation system |
| Title in Chinese: | 大中型喷灌机应用技术规范 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2019-02-11 |
| Implemented on: | 2019-05-11 |
| Superseding: |
SL 280-2003 Using technical specification for traveller sprinkling irrigation machine drawn by tube
SL 295-2004 Using technical specification for roll wheel lines move sprinkling irrigation machine |
| Professional Classification: | SL-Water Resources |
| Related Keywords: | medium -scale sprinkler irrigation system introduction background
allowable sprinkler irrigation intensity center pivot sprinkler technical specification translation sprinkler |
| Related Topics: | spray
sprinkler irrigation large academic irrigation machine Sprinkler irrigation method |
Introduction
Background of Standard Revision and Technological Evolution
This standard integrates the two old regulations SL 280-2003 and SL 295-2004, and adds the content of center pivot and translation sprinkler, reflecting the following technological evolution:
| Version | Covered models | New content | Key technical indicators |
|---|---|---|---|
| SL 280-2003 | Reel and winch type | - | Single machine control area ≤50hm² |
| SL 295-2004 | Roller type | - | Wheel axle branch pipe length ≤400m |
| SL 280-2019 | Four major types of models | Electrical safety/synchronous control/GNSS guidance | Translational single machine length ≤500m |
Analysis of core technical requirements
1. Application conditions
The applicable conditions of different types of sprinklers are significantly different:
- Slope limit: ≤20‰ for reel-type longitudinal, ≤5‰ for translational type
- Wind speed requirement: The upper limit of operating wind speed is 5.4m/s (except windproof sprinkler heads)
- Crop height: Needs to be lower than the ground clearance of the sprinkler truck (usually ≥1.5m)
2. Key parameters for system planning
Case: When the center pivot sprinkler is used in the winter wheat irrigation project in the North China Plain:
- According to the characteristics of sandy loam soil, the allowable sprinkler irrigation intensity is 15mm/h
- The designed irrigation cycle is 7 days, and the daily water consumption is 6mm
- The single-machine flow is determined by the formula Q=10×6×20/(20×0.8)=75m³/h
Key points for installation and commissioning
| Model | Core Installation Steps | Acceptance Index |
|---|---|---|
| Reel-type | Reel-type tension adjustment (≤5kN) | Speed error of sprinkler vehicle ±5% |
| Translational | GNSS guidance system calibration | Straight line deviation≤0.5m/100m |
Implementation Suggestions
1. Selection Strategy
Priority considerations:
- Intensive plots: Choose Translational sprinkler (high control accuracy)
- Hillary areas: Use drag-type center pivot type (adaptable to slopes ≤8‰)
2. Maintenance cycle
Maintenance requirements for key components:
- Quarterly maintenance: Check the seals of the water pipe (replacement cycle is 2 years)
- Annual maintenance: Change the oil of the motor reducer (ISO VG220)
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