angol term
Magyarország
windage guard
Egy gőzturbina tengelykapcsoló meghibásodásról szóló lenti szövegben mi lehet a windage guard (és egy másik kérdésben) a pilgrim bolt magyar megfelelője?
"Upon inspection of the bearings, the nut from a single clamp bolt was found loose from a turbine shaft coupling and significant damage had been caused to the windage guard, adjacent coupling and local instrumentation."
.....
"It is deemed not possible for the pilgrim bolt to have come out of the coupling completely due to the rotation speeds and the windage guard."
| 3 | tengelykapcsoló védőburkolata |
Peter Szekretar
|
| shield against heat transfer? |
Tomasso
|
PRO (1): Peter Szekretar
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Proposed translations
Franciaország
Quality oriented work
Native in: magyar 
Works in: angol - magyar, francia - magyar, magyar - angol, and 6 more.
tengelykapcsoló védőburkolata
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”.
A tengelykapcsoló védőburkolatának eltávolítása, a műszaki paraméterek ellenőrzése.
https://hu.yanturbo.com/gas-turbine-power-plant/gas-turbine-maintenance-and-overhaul.html
Reference comments
shield against heat transfer?
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Note added at 6 hrs (2023-12-20 03:20:35 GMT)
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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.
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Note added at 6 hrs (2023-12-20 03:28:48 GMT)
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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...
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Note added at 6 hrs (2023-12-20 03:29:41 GMT)
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I did not find a picture of HEAT SHielding system or windage guard, am not sure of exact meaning of the term.
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Note added at 6 hrs (2023-12-20 03:31:35 GMT)
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Better picture of RADIAL FIT expanding bole, https://www.pilgrim-international.co.uk/case-studies/3636/
Discussion
Végül is nem derült ki mi a dolog magyar neve. Angolul tudó turbinaszakértő se tudta, de valamiféle hővédő (tömszelencevédő) karimára tippelt.
Mindenesetre köszönöm, Tomassonak is.
Yes, it is possible, even very likely, that it is a heat protection and/or windage loss (air resistance) reduction device (of flange shape) within heavy coupling assemblies.
I also searched the net and found some references to both functions in English but nothing in Hungarian.
I would actually be interested in the Hungarian equivalent of the term.
Turbine specialists use a rather specialized slang.