iTHERM TwistWell – thermowell with helical design
Barstock thermowell for high velocity applications
A Kármán vortex street is a fluid dynamic phenomenon that occurs when a fluid (such as air or water) flows around a solid object (such as a thermowell in a pipe) under harsh conditions (such as high pressure / velocity). The fluid separates from the surface of the thermowell and creates vortices downstream. These vortices cause vortex-induced vibrations (VIVs), which can damage or even destroy the thermowell if they are too severe. They can also significantly affect the stress on the thermowell.
iTHERM TwistWell thermowell TT151 (metric) / TT152 (imperial)
Simulation: comparison standard thermowell (left side) to iTHERM TwistWell (right side)
iTHERM TwistWell available for iTHERM ModuLine TM151 (metric) / TM152 (imperial)
优势
> 90% reduction of vortex-induced vibrations
Static loads can be calculated acc. ASME PTC 19.3 TW
Easy installation for all nozzle sizes starting from 1” / DN25
Effectiveness of the design verified by an independent 3rd party agency
Our barstock thermowell with patented helical iTHERM TwistWell design drastically prevents vortices alongside the complete length of the thermowell stem and reliefs the thermowell of the high dynamic stresses. It grants a long immersion into the process and standard diameters for an optimal measurement result. It results in drastic mitigation of vortex shedding effects and makes it the perfect alternative for process conditions where standard thermowells fail due to vortex-induced vibrations!
产品
| FLEX产品选型 | 仪表技术性能 | 选型便捷程度 |
|---|---|---|
Fundamental选型 完美胜任基本测量任务 |
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Lean选型 轻松应对关键工艺的测量挑战 |
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Extended选型 创新技术助力工艺流程优化 |
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Xpert选型 满足严苛工况的特殊测量要求 |
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特殊选型 |
下载
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白皮书（WP）
棒材保护套管
iTHERM TwistWell保护套管设计——经实验与有限元分析验证，相较于标准套管可降低90%以上的流致振动与应力
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手册
在余热锅炉（HRSG）系统中实现高蒸汽品质
集成了采用先进设计的iTHERM TwistWell棒材保护套管，操作人员可显著提升蒸汽品质并大幅降低涡流导致的振动。
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