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GB/T 37554-2019: Performance test code on deaerator
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GB/T 37554-2019: Performance test code on deaerator

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Performance test code on deaerator ICS 27.040 K54 National Standards of People's Republic of China Deaerator performance test procedure Published on.2019-06-04 2020-01-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword I 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 symbol 1 5 General 2 6 Measuring instruments and methods 3 7 result calculation 12 8 Test report 17 Appendix A (informative) Typical deaerator measuring point arrangement 21 Appendix B (informative) Calculation example 22 Reference 27

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some of the contents of this document may involve patents. The issuing organization of this document is not responsible for identifying these patents. This standard is proposed and managed by the China Electricity Council. This standard was drafted. Xi'an Thermal Power Research Institute Co., Ltd., Xi'an Xire Energy Saving Technology Co., Ltd. The main drafters of this standard. Yu Xin, Ju Wenping, Ma Tingshan, Jiang Hao, Chang Dongfeng, Wang Hao, Huang Jialu. Deaerator performance test procedure

1 Scope

This standard specifies the method and procedure for the performance test of deaerator for dissolved oxygen concentration ≤75μg/L. This standard applies to deaerator heaters and deaerators with surface exhaust condensation devices or hybrid exhaust gas condensation devices.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 2624 (all parts) Measuring full pipe fluid flow with a differential pressure device installed in a circular cross-section pipe GB/T 8117 (all parts) Steam turbine thermal performance acceptance test procedures

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Heat load heatingload The amount of heat that the steam transfers to the feed water in the deaerator per unit time. 3.2 Dissolved oxygen concentration The concentration of residual dissolved oxygen in the feed water after deaeration. 3.3 Water supply terminal difference temperaturetemperaturedifference The difference between the saturation temperature of the feed water and the deaerator outlet water temperature at the deaerator operating pressure. 3.4 Potentiometric titration A method of determining the end point of a measured substance by measuring a change in potential during the titration.

4 symbol

This standard uses the symbols specified in Table 1 and their definitions unless otherwise stated. Table 1 Performance parameter symbols and definitions Name symbol unit definition description Heat load QW heat transferred to the feed water Actual steam flow into the deaerator Ws kg/s Actual supply of steam flow (including loss) for deaeration, heating and venting Ideal steam flow rate into the deaerator W's kg/s Assuming the end difference is zero, calculate the total steam flow required Deaerator heating steam inlet pressure ps kPa - Deaerator heating steam inlet temperature ts °C - ...