Accounting Internal Corrosion Wear of Thermal Pipelines Transporting One-Phase Heat Medium (Water) in the Evaluation of Their Service Life

About the authors:

Denis B. Chapaev, Cand. Sci. (Tech.), Associate Professor, Department of Heat and Gas Supply and Ventilation, Novosibirsk State University of Architecture and Civil Engineering; db.chapaev@gmail.com

Alexey A. Olennikov, Cand. Sci. (Tech.), Associate Professor, Department of Information Security, University of Tyumen; a.a.olennikov@utmn.ru

Eugene A. Olennikov, Cand. Sci. (Tech.), Associate Professor, Head of the department of Information Security, University of Tyumen; e.a.olennikov@utmn.ru

Alexander A. Zakharov, Dr. Sci (Tech.), Professor, Secure Smart City Information Technologies Department, University of Tyumen; a.a.zakharov@utmn.ru

Abstract:

The main reason for the destruction of the linear part of the thermal energy systems is the corrosion wear of metal pipes. Lately, in connection with the application of hermetic heat-insulating constructions of pipelines (from the outdoor side of the tube), their residual resource is often determined by the corrosion wear on the “unprotected” indoor side of the tube, and estimating its rate is critical for predicting the emergency situations and planning repairs of the linear part of the system.

This article considers the method of calculating the service life of thermal pipelines trans-porting high-temperature water accounting for the intensity of internal corrosion wear, as well as provides results of the calculation on it. The method is applicable to pipes made of carbon structural steel, and to the case of normative oxygen concentration in the heat medium. The authors present dependencies of deep indicator of internal corrosion wear of the pipe and its service life on pH and temperature of the heat medium. Furthermore, they provide the calculated dependencies of the solubility of magnetite in the thermal grid water.

References:

1. Baymachev E. E., Manzarhanova L. M., Tufanova M. V., Levitsky A. I. 2015. “Optimizatsiya temperaturnogo grafika tsentralizovannogo teplosnabzheniya po kriteriyu minimuma zatrat eksergii” [Optimization of District Heating Temperature Chart on the Criterion of Minimum Cost of Exergy]. Vestnik Irkutskogo gosudarstvennogo tekhnicheskogo universiteta, no 6, pp. 68-72.
2. Balaban-Irmenin Yu. V., Lipovskii V. M., Rubashov A. M. 2008. Zashchita ot vnutrenney korrozii truboprovodov vodyanykh teplovykh setey [Protection Against Internal Corrosion of Piping Water Heating Networks]. Moscow: Novosti teplosnabzheniya.
3. Basin A. S., Chapaev D. B. 2004. “Metodika rascheta vnutrennego korroziionnogo iznosa teploprovodov” [Method of Calculation of Internal Corrosion Wear of Thermal Pipelines]. Izvestiya vuzov. Stroitel'stvo, no 2, pp. 83-87.
4. Keck R. G., Griffit P. 1991. “Raschet erozionno-korrozionnogo iznosa truboprovodov iz malouglerodistoy stali, transportiruyushchikh vodu i vlazhnyy par” [Prediction of Erosive-Corrosive Wear in Low-Carbon Steel Piping Conveying Water or Wet Steam]. Sovremennoe mashinostroenie. Seriya A, no 5, pp. 41-48.
5. Christensen O., Andersen S. 2008. “Novye datskie standarty vodopodgotovki” [New Danish Standards of Water Treatment]. Vodoochistka, no 6, pp. 56-60.
6. Olennikov A. A., Tsymbal V. P. 2014. “O probleme glubokogo ispol'zovaniya energii iskhodnogo topliva metallurgicheskikh agregatov” [On the Problem of the Deep Use of Energy from Original Fuel of Metallurgical Units]. Proceedings of the Research Conference dedicated to 150th anniversary of V. E. Grum-Grzhimailo “Tvorcheskoe nasledie V. E. Grum-Grzhimaylo: istoriya, sovremennoe sostoyanie, budushchee” [The Creative Heritage of V. E. Grum-Grzhimailo: History, Current Status and Future], pp. 349-354. Yekaterinburg.
7. Olennikov A. A., Chapaev D. B. 2012. “Uchet vnutrenney korrozii pri prognozirovanii planovykh remontov v sistemakh transporta tepla” [Accounting Internal Corrosion at Forecasting of Planned Repairs in the Heat Transport System]. Proceedings of the Regional Research Conference for students, Young Researchers and Specialists “Energosberezhenie i innovatsionnye tekhnologii v toplivno-energeticheskom komplekse” [Energy Saving and Innovative Technologies in the Energy Sector], pp. 89-93. Tyumen: Tyumen State Oil and Gas University.
8. Chapaev D. B. 2007. “Korroziya stali 20 i stali 17GS v teplosetevoy vode” [Corrosion of Steel 20 and Steel 17GS in the Thermal Grid Water]. Izvestiya vuzov. Chernaya metallurgiya, no 4, pp. 49-51.
9. Chapaev D.B., Olennikov A.A. 2012. “Raschet skorosti vnutrenney korrozii truboprovodov vodyanykh teplovykh setey iz uglerodistykh staley” [Calculating the Rate of Internal Corrosion of Water Heating Network from Carbonaceous Steel]. Izvestiya vuzov. Chernaya metallurgiya, no 4, pp. 33-36.
10. Chapaev D. B. 2004. “Kharakteristiki vnutrenney korrozii i nadezhnosti teplovykh setey krupnogo goroda” [Characteristics of Internal Corrosion and Reliability of Heat Networks of a Large City]. Cand. Sci. (Tech.) diss. Novosibirsk.
11. Olennikov, A. A., Tsymbal, V. P. 2008. “Document Using Secondary Energy Sources in Liquid-Phase Reduction”. Steel in Translation, no 38(6), pp. 439-443.
12. Tsymbal V. P., Mochalov S. P., Olennikov A. A., Ognev A. M. 2012. “Energy-Metallurgical Complex Based on the Spray-Emulsion Reactor”. CIS Iron & Steel Review, no 1, pp. 13-15.