The pre-stressed technology has good prospect in development and application for it may greatly reduce the thermal stress of fixed tube-sheet exchanger.
预应力技术可以大大降低固定管板换热器的温差应力，因此有良好的应用前景。
Equipment safely is threatened with the thermal stress created by fixed-tube sheet exchanger for its structure. Causes of thermal stress have been analyzed and the countermeasures proposed.
由于结构原因固定管板式换热器所产生的温差应力对设备的安全构成很大威胁。介绍了温差应力产生的原因及降低温差应力的措施。
Practice proved that technical reconstruction can prevent effectively the crack of exchanger tube sheet, and prolonged the service life of exchanger.
实践证明，该技术改造能有效的防止换热器管板的开裂，延长了换热器的使用寿命。
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