Custom Design High Precision Corrosion Resistant DV Valve Piston for Steam Turbines
Detalhes do produto
The DV valve piston serves as the key reciprocating sliding component within steam turbine DV governing valves. Driven by EH hydraulic oil, it precisely adjusts steam intake volume to stabilize turbine rotation speed and unit load, directly determining the safety and regulation accuracy of power generation equipment.
Our factory specializes in custom manufacturing of DV valve pistons for power equipment manufacturers worldwide, delivering high-precision, long-life mechanical parts that solve frequent wear, sticking, and leakage issues common with original pistons.
We customize pistons fully according to customer working conditions, drawings, or physical samples:
- Structural customization: Outer diameter, central mounting hole, multi-step flange, damping grooves, balance oil passages, sealing shoulder size
- Material customization: Medium carbon alloy steel, nitriding special steel, corrosion-resistant stainless steel
- Surface strengthening customization: Ion nitriding, hard chromium plating, mirror polishing, anti-erosion coating
- Tolerance customization: Meet ultra-high precision sealing standards of high-pressure EH hydraulic systems
Ultra-fine grinding and mirror superfinishing create extremely low surface roughness. Tight geometric tolerance control ensures consistent clearance between piston and valve sleeve, preventing valve vibration, sticking, and unstable flow adjustment during frequent load fluctuation and unit start-stop cycles.
Dense hardened surface layer effectively resists erosion, oxidation, and impurity abrasion from high-temperature EH oil. This significantly reduces maintenance cycles and replacement frequency for power plant units, substantially lowering operational costs.
Symmetrically distributed throttling and balance structures ensure linear hydraulic response. The piston maintains stable regulation accuracy under long-duration variable load operation, improving overall unit efficiency and safety.
| Inspection Stage | Quality Checks |
|---|---|
| Raw Material Incoming | Chemical composition analysis & hardness testing |
| Semi-Finished Product | Dimensional tolerance & geometric error detection |
| Finished Product | Three-coordinate measurement, surface flaw NDT, surface roughness testing |
| Final Validation | Hydraulic matching simulation test paired with matching valve sleeves |
All test data is recorded into formal inspection documents, supporting factory audits and comprehensive quality traceability.
Applicable to DV control valves of all types of steam turbines, including:
- 600MW, 300MW, 1000MW thermal power generating units
- Waste heat power turbines
- Industrial steam turbines
- Matched EH hydraulic control systems
- Professional hydraulic mechanical engineers assist with drawing optimization
- Flexible production lead times for prototype, small batch, and mass orders
- Standard anti-rust oil + moisture-proof vacuum packaging for overseas transportation
- Global after-sales team to quickly resolve on-site assembly and matching problems
Mr. Tom Hu
General Manager
- E-mail: tom.hu@huanxiang-industrial.com
- Telefone: +86-13618387300
- Whatsapp: 8613618387300
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Wechat:
+86-13271888325
- Skype: hsh548
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