GB/T 28553-2012Steam turbines -- Steam purity (English PDF)

GB/T 28553-2012 is the English-translated version of 汽轮机 蒸汽纯度.

GB/T 28553-2012 — This standard specifies the chemical properties of steam for a steam turbine in order to prevent corrosion and fouling the steam passage, the risk of corrosion steam turbine, efficiency Rate or reduce output power loss to a minimum.

This standard applies to condensing steam or back-pressure power generation steam turbine with a rated power. However, the rated power or steam pressure applied Range by economic factors (such as the relative cost of turbine monitoring apparatus and equipment) limits.

This standard is compiled for the new units, but also suitable for existing units. This standard describes the limit values \u200b\u200bfor the protection of the turbine is designed.

Users also should be aware of other devices (such as a boiler or steam generation Device) on steam purity. This standard applies to any source of steam turbine driven except for geothermal source.

After the initial start, after the steam it may take several months to achieve optimal chemical state some parameters (sodium, cation conductivity) than Other parameters (silica, iron, copper) quickly achieve the best result, normal steam parameters of the target may be difficult to put into operation during the Reached, but with the improvement of the quality of steam and gradually improved.

Appendix A lists the recommended guidelines of this standard and the authentication methods of chemical purity steam to steam for to ensure that the turbine Integrity and efficiency of the limit value is not mandatory, as a separate unit on-site guidance on the basis of presentation.

Verification. By choosing to close Suitable sampling locations and measurement parameters continuously or intermittently to carry out.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 9 pages — is available in the English PDF.

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