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          Why it is forbidden to send steam to bearing seal when the rotor is stationary?

          Because send steam to bearing seal when the rotor is stationary, not only will cause the rotor seal segment locally uneven heating. Bending deformation, and steam leakage from the seal section of the cylinder into the cylinder can cause uneven expansion, resulting in greater thermal stress and thermal deformation, so that cause the rotor bending deformation. Therefore, it is forbidden to send steam to bearing seal when the rotor is stationary.

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