Serviceability restoration of operating fastening elements of the high pressure cylinder body of hpp steam turbines https://doi.org/10.33108/visnyk_tntu2019.01.032
Article Sidebar
Main Article Content
Abstract
The mechanical characteristics of the fastening nuts steel of the high-pressure cylinder (HPC) of the steam turbine of
the heat power plant (HPP), operating under the influence of hard temperature- power conditions for 21×104 hours, are outside the limits of the regulated values. It is the indicator of steel degradation. Using different types of heat treatment (HT), including recommended for 25Kh2M1F steel in the initial state, made it possible (in a certain extent of course) to restore the properties of the metal used for fastening
fittings. The obtained results substantiate the efficiency of using of the HT for restoring the mechanical characteristics of steel for nuts of the HPC of the steam turbine in order to prolong their service lifetime.
Article Details
Issue
Section
This work is licensed under a Creative Commons Attribution 4.0 International License.
References
1. Laxminarayan K. M., Venkatarama Reddy, Kumar Optimization of Steam Turbine Casing for Static Loading Condition. Ijmsa. 2013. Vol. 1. No. 2. pp. 122–126. https://doi.org/10.12720/ijmse.1.2.122-126
2. Borodov Yu. M., Rodin V. N. Remont parovyih turbin: uchebnoe posob. / pod obschey red. Yu. M. Brodova, V. N. Rodina. Ekaterinburg: GOU UGTU – UPI, 2002. 203 р. [In Russian].
3. RD 153-34.1-39.603-99. Rukovodstvo po remontu armaturyi vyisokih parametrov. M.: SPO ORGRES, 2000. 68 р. [In Russian].
4. Molochek V. A. Remont parovyih turbin. Moskva: Energiya, 1968. 376 p. [In Russian].
5. GOST 20700–75 (ST SEV 1066–78). Boltyi, shpilki, gayki i shaybyi dlya flantsevih soedineniy s temperaturoy sredyi ot 0 do 650oC. M.: Izdatelstvo standartov, 1981. 6 p. [In Russian].
6. Krechkovs’ka H. V. Strukturni zminy v ekspluatovaniy na holovnomu parohoni TES stali 15Kh1M1F, povyazani z zupynkamy tekhnolohichnoho protsesu. Metallofyzyka y noveyshye tekhnolohyy. 2008. T. 30. Spetsvyp. P. 701–711. [In Ukrainian].
7. V. V. Panasyuk, H. M. Nykyforchyn, O. Z. Student, Z. V. Slobodyan Zastosuvannya pidkhodiv mekhaniky ruynuvannya do otsinky vodnevoyi dehradatsiyi staley nafto- ta paroprovodiv. Mekhanika i fizyka ruynuvannya budivel'nykh materialiv ta konstruktsiy: zb. nauk. prats'. L'viv: Kamenyar, 2002. Vyp. 5. Pp. 537–546. [In Ukrainian].
8. О. Z. Student, H. V. Krechkovs’ka, T. E. Palashchuk et al. Influence of the long-term operation of 12Kh1МF steel of the bends of main steam pipelines of thermal power plants on its mechanical properties. Materials Science. 2018. Vol. 53. Iss. 4. Pp. 1–8. https://doi.org/10.1007/s11003-018-0095-1
9. Yu. K. Petrenya i dr. Obespechenie prochnosti i resursa energooborudovaniya – vazhneyshee napravlenie issledovaniy i razrabotok OAO “NPO TsKTI im. I. I. Polzunova”. Nadezhnost i bezopasnost energetiki. 2008. No. 1. P. 14–19. [In Russian].
10. Rezinskih V. F., Grin E. A., Zlepko V. F. Kontseptsiya prodleniya resursa metalla oborudovaniya TES. Promyishlennaya energetika. 2002. No. 4. P. 25–29. [In Russian].
11. Lebedev V. I., Oreshkin B. M., Sudakov A. V. Prodlenie resursa oborudovaniya energoblokov AES. Tr. TsKTI. 2002. Vyp. 282. P. 28–44. [In Russian]. https://doi.org/10.2753/RES1060-939344086
12. Savostyanova L. V., Litvak V. V. Analiz neispravnostey elementov turboustanovki. Elektricheskie stantsii. 2012. No. 4. P. 18–21. [In Russian].
13. Caudill M. B., Griebenov R. D. Analysis of Leakage Between HP and IP Turbines Using PEPSE. URL: http://famos.scientech.us/Papers/1990/1990section3.pdf (Last accessed: 16.01.2019).
14. Hopson W. H. Practical Field Experience with Steam Turbine Performance Testing − EPRI Heat Rate Improvement Conference, 2003.
15.RD 10-262-98 (RD 153-34.1-17.421-98). Tipovaya instruktsiya po kontrolyu metalla i prodleniyu sroka sluzhbyi osnovnyih elementov kotlov, turbin i truboprovodov teplovyih elektrostantsiy. M.: RAO “EES Rossii”, 1999. 93 p. [In Russian].
16. GOST 1497−84 Metallyі. Metodyi ispyitaniy na rastyazhenie. M.: Standartinform, 2006. 22 p. [In Russian].
17. GOST 9012–59 Metallyі. Metod izmereniya tverdosti po Brinellyu. Moskva: Standartinform, 2008. 40 p. [In Russian].
18. GOST 9454–78 Metallyi. Metod ispyitaniya na udarnyiy izgib pri ponizhennyih, komnatnoy i povyishennyih temperaturah. M.: Izdatelstvo standartov, 2008. 12 p. [In Russian].
19. Svirska L. M. Vikoristannya termichnogo obroblennya dlya vidnovlennya robotozdatnostI krIpilnoYi armaturi tsilIndrIv visokogo tisku parovoYi turbIni TES. Metallofizika i noveyshie tehnologii. 2008. Vol. 30.Spetsvip. Pp. 689–700. [In Ukrainian].
20. H. M. Nykyforchyn, O. Z. Student, H. V. Krechkovs’ka et al. Evaluation of the influence of shutdowns of a technological process on changes in the in-service state of the metal of main steam pipelines of thermal power plants. Materials Science. 2010. Vol. 46. No. 2. Pp. 177–189. https://doi.org/10.1007/s11003-010-9288-y
21. O. Z. Student. Accelerated method for hydrogen degradation of structural steel. Ibid. 1998. Vol. 34. No. Pp. 497–507. https://doi.org/10.1007/BF02360701
22. O. P. Ostash, A. I. Kondyr, O. V. Vol’demarov et al. Structural microdamageability ofsteels of the steam pipelines of thermal power plants. Ibid. 2009. Т. 45. № 3. Pp 340–349. https://doi.org/10.1007/s11003-009-9189-0
23.I. R. Dzioba. Properties of 13KhMF steel after operation and degradation under the laboratory conditions. Ibid. 2010. Vol. 46. No. 3. Pp. 357–364. https://doi.org/10.1007/s11003-010-9297-x
24. O. P. Ostash, O. V. Vol’demarov, P. V. Hladysh et al. Evaluation of the degradation of steels of steam pipelines according to their structural, mechanical, and electrochemical characteristics. Ibid. 2011. Vol. 46 No. 4. Pp. 431–439. https://doi.org/10.1007/s11003-011-9309-5
25. O. Z. Student, L. M. Svirs’ka, I. R. Dzioba Influence of the long-term operation of 12Kh1M1F steel from different zones of a bend of steam pipeline of a thermal power plant on its mechanical characteristics. Ibid. 2012. Vol. 48. Iss. 2. Pp. 239–246. https://doi.org/10.1007/s11003-012-9498-6
26. Student O. Z., Krechkovs’ka H. V. Anisotropy of the mechanical properties of degraded 15Kh1M1F steel after its operation in steam pipelines of thermal power plants. Ibid. 2012. Vol. 47. Iss 5. Pp. 590–597. https://doi.org/10.1007/s11003-012-9432-y
27.I. M. Zhuravel’, L. M. Svirs’ka. Measurement of the mean grain size in a metal by using fractal dimensions. Ibid. 2010. Vol. 467. Iss. 3. Pp. 418–420. https://doi.org/10.1007/s11003-010-9306-0
28.R. A. Vorobel’, I. M. Zhuravel’, L. M. Svirs’ka et al. Automatic selection and quantitative analysis of carbides on grain boundaries of 12Kh1MF steel after operation at a steam pipeline of a thermal power plant. Ibid. 2011. Vol. 47. Iss. 3. Pp. 393–400. https://doi.org/10.1007/s11003-011-9408-3