Decision inputs
- Thermal travel range and rate
- Support load window
- Temperature and steam environment
- Maintenance access
APPLICATION SOLUTION
Steam turbine thermal compensation
Steam turbine casings and pipe supports use disc springs for thermal compensation and constant support reaction; this entry page lists thermal compensation decision points and verification methods.
ENGINEERING PROBLEM
Start-stop and load changes create large thermal travel, requiring supports to hold controlled load across that travel.
BOUNDARY
This page describes a decision pattern and does not promise size or performance for another operating condition.
Solution pattern
- Disc spring constant-force regions absorb thermal travel
- Combine with sliding/rolling supports
- Verify loads in cold and hot states
Key risks
- Over-travel solidifies and loses compensation
- High-temperature relaxation
- Binding overloads piping stress
Verification plan
- Load-displacement characteristic verification
- Measured cold/hot state loads
- Operating travel monitoring
Source-backed correspondences
| Summary | Load | Travel | Source |
|---|---|---|---|
| 汽轮机热补偿——按compensation目标预选产品族；场景摘要仅供决策参考，不构成对其他工况的产品承诺。 | 按预紧 + 高温降额 | 热补偿行程 | Source ↗ |
Evidence (library locators)
Every technical claim traces to a specific asset version and page; restricted sources show locator metadata only.
- 443 US5697848 Flexible Disk Shaft for Turbomachine 透平柔性盘轴 PDF p.15 · mechanism(internal source; excerpt not public)
- 440 US3768776 Steam Turbine Governor Valve Actuating Mechanism 汽轮机调节汽门操纵机构 PDF p.4 · mechanism(internal source; excerpt not public)
- US4257234 KWU Siemens Valve Arrangement Turbosets Belleville Stack PDF p.7 · mechanism(internal source; excerpt not public)
- 444 US20120018577A1 Engine Mounting with an Adapted Load Deformation Curve PDF p.6 · mechanism(internal source; excerpt not public)
- 440 US3768776 Steam Turbine Governor Valve Actuating Mechanism 汽轮机调节汽门操纵机构 PDF p.3 · numeric(internal source; excerpt not public)
- 443 US5697848 Flexible Disk Shaft for Turbomachine 透平柔性盘轴 PDF p.5 · numeric(internal source; excerpt not public)
Cases illustrate decisions and do not constitute a specification promise for any other operating condition.
ENGINEERING REVIEW