Skip to main content
SpringerLink
Log in

Water Deaeration in Water-Cooling Systems of the Stator Winding in a Turbogenerator with Hydrogen-Water Cooling

  • Water Treatment and Water Chemistry
  • Published:
Thermal Engineering Aims and scope Submit manuscript

Abstract

Results of experimental investigations performed on 210–1200 MWel. power units at thermal and nuclear power stations yielded a statistical correlation of the corrosion rate for cooled copper conductors in water-cooling systems of the stator winding in a hydrogen-water cooled generator vs. cooling water quality characteristics, such as electrical conductivity, pH, and dissolved oxygen content. The content of dissolved oxygen in the cooling water is found to have a pronounced effect on the efficiency of corrosion protection of system elements. An engineering solution is proposed. It calls for installation of a small cavitation deaerator operating on superheated water in the cooling water return pipeline from the turbogenerator stator winding to a vacuum tank from which steam is removed by the main ejector of the turbine unit condenser or the deaerator’s own ejector. Special experimental investigations allowed the determination of the water deaeration efficiency in deaerators of the considered type. It is described by a dependence of a relative decrease in the content by weight of oxygen dissolved in the deaerated water on the water overheating at the deaerator inlet with reference to saturation temperature corresponding to the pressure in the steam suction pipeline. It was established by calculations that the proposed engineering solution decreased the corrosion rate of copper conductors in water-cooling systems of the stator winding, on average, by a factor of 2.1. Results of this investigation can be used in designing new power facilities or retrofitting process systems of operating hydrogen-water cooled turbogenerators.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. E. I. Gurevich and A. G. Filin, “The temperature field of the stator winding of a powerful turbo-generator with local disturbances of internal water-cooling system,” Elektrichestvo, No. 3, 23–29 (2010).

    Google Scholar 

  2. G. M. Fedorenko and A. V. Vygovskii, “Efficiency of water treatment in direct cooling systems of stator windings of powerful turbo-generators and its impact on safety, reliability and efficiency of NPP units,” Tr. Inst. Elektrodin. Nats. Akad. Nauk Ukrainy, No. 30, 62–68 (2011).

    Google Scholar 

  3. V. V. Shevchenko, “Ways of defect development prevention in the elements of turbo-generators,” Vestn. Priazovskogo Gos. Tekh. Univ. Tekh. Nauki, No. 32, 172–180 (2016).

    Google Scholar 

  4. “Operational circular Ts-10-85 (E). On the organization of water-chemistry of a cooling system for stator windings of turbo and hydro generators,” in Collection of Decisions and Circulars of GTU Minenergo SSSR of 1985 (electric engineering part) (Soyuztekhenergo, Moscow, 1986) [in Russian].

  5. V. E. Gmurman, Fundamentals of Probability Theory and Mathematical Statistics (Vysshaya Shkola, Moscow, 2003, 9 ed.; Elsevier, New York, 1968).

    Google Scholar 

  6. A. S. Ivanov, E. M. Shitov, and A. V. Bogachev, “Corrosion of hollow copper conductors in direct water cooling systems of turbogenerator windings,” Universum: Tekh. Nauki, No. 11, 20–24 (2016).

    Google Scholar 

  7. V. I. Sharapov and D. V. Tsyura, Thermal Deaerators (Ul’yanovsk. Gos. Tekh. Univ, Ul’yanovsk, 2003) [in Russian].

    Google Scholar 

  8. V. I. Sharapov and V. E. Makarova, “On direct-flow vacuum deaerators,” Energosberezhenie Vodopodgot., No. 3, 42–44 (2006).

    Google Scholar 

  9. G. V. Ledukhovskii, V. N. Vinogradov, I. A. Shatova, and A. A. Razinkov, “Reconstruction of atmospheric jet deaerators using AVACS cavitation deaeration devices,” Vestn. Ivanov. Gos. Energ. Univ., No. 6, 5–10 (2014).

    Google Scholar 

  10. B. A. Zimin, “Problems of water deaeration in power engineering and a way to solve them,” Nov. Teplosnab., No. 1, 40–44 (2006).

    Google Scholar 

  11. E. V. Barochkin, V. P. Zhukov, G. V. Ledukhovskii, and A. A. Borisov, “Generalized calculation method for multi-stage deaerators,” Izv. Vyssh. Uchebn. Zaved., Ser.: Khim. Khim. Tekhnol. 47 (9), 100–103 (2004).

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Ivanovo State Power University, Ivanovo, 153003, Russia

    G. V. Ledukhovsky, Yu. E. Barochkin, V. P. Zhukov & V. N. Vinogradov

  2. AO Ivgorteploenergo, Ivanovo, 153021, Russia

    I. A. Shatova

Authors
  1. G. V. Ledukhovsky
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Yu. E. Barochkin
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. V. P. Zhukov
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. V. N. Vinogradov
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. I. A. Shatova
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to G. V. Ledukhovsky.

Additional information

Original Russian Text © G.V. Ledukhovsky, Yu.E. Barochkin, V.P. Zhukov, V.N. Vinogradov, I.A. Shatova, 2018, published in Teploenergetika.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Ledukhovsky, G.V., Barochkin, Y.E., Zhukov, V.P. et al. Water Deaeration in Water-Cooling Systems of the Stator Winding in a Turbogenerator with Hydrogen-Water Cooling. Therm. Eng. 65, 751–755 (2018). https://doi.org/10.1134/S004060151810004X

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1134/S004060151810004X

Keywords

Search

Navigation