21:08 Dec 19, 2023 |
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English to Hungarian translations [Non-PRO] Tech/Engineering - Other / Turbina tengelykapcsoló | |||||
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3 | tengelykapcsoló védőburkolata |
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shield against heat transfer? |
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Discussion entries: 2 | |
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tengelykapcsoló védőburkolata Explanation: Ha a windage guard az ugyanaz, mint a jóval több találatban megjelenő coupling guard. De mivel azt írod, hogy itt kifejezetten a tengelykapcsoló meghibásodásáról van szó, ezért szerintem ez sanszos. És az első hivatkozásomból származó következő idézet is ezt támasztja alá. Coupling guard is a piece of equipment that encloses coupling to protect personnel from the rotating coupling. Figure 1.3 show a coupling guard that encloses coupling. The heating of coupling guards and pressure distribution within coupling guards are closely associated with windage effects. According to API 671, maximum coupling guard temperature should not exceed 140°F (60 °C) [5], the investigation of coupling guard heating is therefore of practical significance. A második hivatkozás egy turbinakarbantartás lépéseit írja le. Itt a „Kapcsolás” címszó alatt a tengelykapcsoló karbantartásának első lépése a „védőburkolat eltávolítása, műszaki paramétrek ellenőrzése”. Example sentence(s):
https://oaktrust.library.tamu.edu/bitstream/handle/1969.1/158983/ZHAI-THESIS-2016.pdf;jsessionid=EC3DC0D48DC1CF68F81BE0408C32B333?sequence=1 https://hu.yanturbo.com/gas-turbine-power-plant/gas-turbine-maintenance-and-overhaul.html |
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6 hrs |
Reference: shield against heat transfer? Reference information: Oda van írva...https://asmedigitalcollection.asme.org/turbomachinery/articl... -------------------------------------------------- Note added at 6 hrs (2023-12-20 03:20:35 GMT) -------------------------------------------------- The viscous drag on rotating components in gas turbine engines represents both a direct loss of power from the cycle and an input of heat into the secondary (cooling) air system. Hotter cooling air in turn means increased flow requirements. The effects of windage on performance are therefore compounded. To facilitate accurate temperature predictions of highly stressed components, information is needed on windage characteristics of all elements in the secondary cooling system. Much information is available in the literature for disks, cones, cylinders, bolts, etc., but little has been published on windage heating in high-speed seals. Results are presented for experiments carried out (at representative nondimensional conditions) on different designs of labyrinth seals. The results are compared with values calculated from the simple momentum balance theory suggested by McGreeham and Ko [13] and with several values determined from CFD analysis. -------------------------------------------------- Note added at 6 hrs (2023-12-20 03:28:48 GMT) -------------------------------------------------- search Google with terms gas tubin heat shield pigrim bolt coupling ..https://www.google.com/search?q=gas tubin heat shield pigrim... note piecture of Pilgirm bolt Korean company subsidiary of Pilgirm in UK https://www.pilgrim-international.co.uk/case-studies/gas-tur... Gas Turbines Benefit from Radial Fit Bolts on CCPP’s As the new millennium dawned the intense new build programme of Combined Cycle Power Plants in the USA was underway to increase efficiency and reduce electricity production costs. It is common knowledge that ‘conventional coupling bolts’ suffer from seizure which results in damage to both the bolt and coupling bolt hole each time they are removed. All of which creates additional costs to that of bolt replacement. Siemens Westinghouse decided to tackle this problem and specified PILGRIM’s Radial Fit Bolt for 43 new build 501F Gas Turbines with Pasadena 1&2 in Texas the first Power Plant to take delivery. Solution The principle of the PILGRIM’s Radial Fit Bolt is of a taper shank bolt drawn into a matching taper sleeve with parallel outer diameter which expands fractionally to produce a perfect interference condition in to the bolt hole. This condition, which “conventional” fitted bolts do not achieve, eliminates movement between mating components. Also with the expansion of the sleeve, exact flange alignment and concentricity is achieved. Axial clamp load is then created by a hydraulic puller. Once the puller draws the tapered bolt into its sleeve it is then used to tension the bolt once the nuts are fitted. https://www.pilgrim-international.co.uk/case-studies/gas-tur... -------------------------------------------------- Note added at 6 hrs (2023-12-20 03:29:41 GMT) -------------------------------------------------- I did not find a picture of HEAT SHielding system or windage guard, am not sure of exact meaning of the term. -------------------------------------------------- Note added at 6 hrs (2023-12-20 03:31:35 GMT) -------------------------------------------------- Better picture of RADIAL FIT expanding bole, https://www.pilgrim-international.co.uk/case-studies/3636/ https://asmedigitalcollection.asme.org/turbomachinery/article-abstract/118/2/414/433813/Windage-Heating-of-Air-Passing-Through-Labyrinth?red |
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