DL/T 5036-2020 in English
VALIDTechnological guidelines for assembly and test of paddle runner
- Issued on:2020-10-23
- Implemented on:2021-02-01
- File Format:PDF
- Delivery:Via email within 5 business days
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| Standard No: | DL/T 5036-2020 |
| Document status: | VALID |
| Title in English: | Technological guidelines for assembly and test of paddle runner |
| Title in Chinese: | 转桨式转轮组装与试验工艺导则 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2020-10-23 |
| Implemented on: | 2021-02-01 |
| Superseding: |
DL/T 5036-1994 Guide for assembly and test technology of runner of Kaplan turbine
|
| Professional Classification: | DL-Electricity |
| Related Keywords: | test classification unified test process
runner structure installation runner installation version runner structure type cylinder-driven runner structure |
| Related Topics: | transduction
Streaming Transient Validation dl assembly runner Within-group testing vs. between-group testing electrotransformation and transformation Process transfer acceptable anchor paddle dl/t5572-2020 t/cec 5036 dl/t2131-2020 |
Introduction
Analysis of the core content of the standard
| Technical elements | 1994 version | New content in the 2020 version |
|---|---|---|
| Runner structure type | Only includes the traditional operating frame structure | Newly added cylinder-driven runner structure (Figure 3.3.1) |
| Pre-installation inspection | Basic inspection requirements | Added anti-corrosion painting specifications (Article 2.0.11) |
| Test classification | Unified test process | Subdivided into blade operation test (9.2) and sealing test (9.3) |
Key Technical Points
1. Differences in runner structure installation
The standard specifies three types of runner installation processes:
- Runner with operating frame: There are two types: lower operating frame (Figure 3.1.1) and upper operating frame (Figure 3.1.3). The difference in installation process mainly lies in the pivot installation sequence
- Runner without operating frame: A guide cylinder-connecting rod structure (Figure 3.2.1) is used, eliminating the operating frame installation step
- Cylinder-driven runner: The piston cylinder directly drives the rotating arm (Figure 3.3.1). Special attention should be paid to the guide shaft installation accuracy (Article 6.2.3)
2.
Key points to note during propeller seal installation:
V-shaped seal groove depth calculation: Determine the actual depth according to the formula A=(EH)-V (Article 8.2.3). When cutting the sealing strip, use a 45° oblique cut and stagger the cuts by 30°-45°.
Spring preload seal: Measure the exposed height of the tightening spring (Figure 8.2.4). Control the compression deviation within ±5%.
3. Comparison of Preload Force Control Methods
| Method | Applicable Scenarios | Precision Control |
|---|---|---|
| Hydraulic Torque Wrench (B.0.2) | Bolts below M36 | ±10% design torque |
| Hydraulic tensioner (B.0.3) | Blind hole bolts | Elongation control ±0.02mm |
| Heating and tightening (B.0.4) | Oversized bolts | μ coefficient needs to be determined experimentally |
Implementation suggestions
- Site planning: The temperature in the installation room must be ≥5℃ (Article 2.0.1), and the spacing between steel piers must ensure that the blades are 300mm from the ground when fully opened (Article 4.0.2)
- Sealing test: Increase the pressure to 1.25 times the working pressure in stages and maintain the pressure for 16 hours (Article 9.3.1). The oil leakage is controlled according to the diameter of the runner.
- Hoisting plan: Support cover is preferred for hoisting (Article 11.3). The flange level on the main shaft needs to be adjusted to ≤0.05mm/m.
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