NF EN ISO 13691
Petroleum and natural gas industries - High speed special-purpose gear units
This International Standard specifies the minimum requirements for enclosed, precision, single and double helical, one- and two-stage speed increasers and reducers of parallel shaft design with pinion speeds of 3000 min−1 or greater, or pitch line velocities of 25 m/s or greater, for special purpose applications. Such applications will typically be required to operate continuously for extended periods, without installed spare equipment and are critical to the continued operation of the installation. By agreement this International Standard may be used for other services. This International Standard also specifies a method of rating gears which meet the following criteria: a) gear accuracy teeth accuracy: accuracy grade 4 or better as given in ISO 1328-1:1995, for both single pitch deviation, fpt, and total cumulative pitch deviation, Fp, total helix deviation Fβ between the helices of the pinion and wheel: accuracy grade 4 or better as given in ISO 1328-1:1995; b) range of the transverse contact ratios: 1,2 < εα < 2,0; c) overlap ratio εβ W 1,0; d) helix angle: 5 u β u 35°; e) working flanks of the pinion or gear: provided with profile modifications to obtain a good conjugate tooth load distribution along the path of contact; f) working flanks of pinion or gear: modified as necessary to compensate for both torsional and bending deflections and, when necessary for gears with pitch line velocities in excess of 100 m/s, also for thermal distortions; g) gear lubrication: straight mineral oil, viscosity grade VG-32 or VG-46 (see ISO 3448); h) material of the gear teeth: quality MQ or better, in accordance with ISO 6336-5:1996.
This International Standard specifies the minimum requirements for enclosed, precision, single and double helical,
one- and two-stage speed increasers and reducers of parallel shaft design with pinion speeds of 3000 min−1 or
greater, or pitch line velocities of 25 m/s or greater, for special purpose applications. Such applications will typically
be required to operate continuously for extended periods, without installed spare equipment and are critical to the
continued operation of the installation. By agreement this International Standard may be used for other services.
This International Standard also specifies a method of rating gears which meet the following criteria:
a) gear accuracy
teeth accuracy: accuracy grade 4 or better as given in ISO 1328-1:1995, for both single pitch deviation, fpt,
and total cumulative pitch deviation, Fp,
total helix deviation Fβ between the helices of the pinion and wheel: accuracy grade 4 or better as given in
ISO 1328-1:1995;
b) range of the transverse contact ratios: 1,2 < εα < 2,0;
c) overlap ratio εβ W 1,0;
d) helix angle: 5 u β u 35°;
e) working flanks of the pinion or gear: provided with profile modifications to obtain a good conjugate tooth load
distribution along the path of contact;
f) working flanks of pinion or gear: modified as necessary to compensate for both torsional and bending
deflections and, when necessary for gears with pitch line velocities in excess of 100 m/s, also for thermal
distortions;
g) gear lubrication: straight mineral oil, viscosity grade VG-32 or VG-46 (see ISO 3448);
h) material of the gear teeth: quality MQ or better, in accordance with ISO 6336-5:1996.
- Avant-proposiv
- Introductionv
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1 Domaine d'application1
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2 Références normatives2
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3 Termes et définitions4
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4 Symboles et abréviations6
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5 Conception de base7
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5.1 Généralités7
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5.2 Évaluation de l'engrenage11
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5.3 Pièces d'engrenage17
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5.4 Carters20
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5.5 Raccordements au carter22
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5.6 Dynamique23
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5.7 Paliers et logements de palier26
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5.8 Lubrification28
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5.9 Matériaux29
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5.10 Plaques signalétiques et flèches de rotation30
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6 Accessoires30
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6.1 Généralités30
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6.2 Accouplements et protecteurs31
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6.3 Plaques de montage31
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6.4 Commandes et instrumentation33
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6.5 Canalisations et accessoires de canalisation34
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6.6 Outillage spécial34
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7 Contrôle, essais et préparation pour expédition34
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7.1 Généralités34
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7.2 Inspection35
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7.3 Essais37
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7.4 Préparation pour expédition40
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8 Informations du vendeur41
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8.1 Généralités41
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8.2 Propositions42
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8.3 Données contractuelles44
- Annexe A (informative) Fiches techniques des engrenages pour applications particulières46
- Annexe B (informative) Représentation des vitesses critiques latérales et formes de mode pour les rotors types51
- Annexe C (informative) Accouplements pour engrenages à grande vitesse53
- Annexe D (informative) Exigences du vendeur en matière de plans et de données58
- Annexe E (informative) Contrôle de la denture64
- Annexe F (informative) Liste de contrôle du vérificateur65
- Annexe G (informative) Relation des facteurs d'évaluation de la denture entre la présente Norme internationale, l'ISO 9084 et l'API 61370
- Bibliographie74
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