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Nā Bearings Kākoʻo VS Nā Bearings Hoʻoikaika

 

1. Nā Bearings Kākoʻo a me kā lākou Hana

Nā bearings kākoʻohe ʻāpana koʻikoʻi o kahi turbine mahu. Ua kapa ʻia hoʻi ka bearing nui he bearing radial.

ʻO kāna hana ke kākoʻo i ke kaumaha holoʻokoʻa o ka rotor a me ka ikaika centrifugal i hoʻokumu ʻia e ka helu kaulike ʻole o ka rotor, a e hoʻoholo i ke kūlana radial kūpono o ka rotor i loko o ka cylinder. ʻOiai ʻo kēlā me kēia bearing e kū i nā ukana kiʻekiʻe a wili ka journal shaft i nā wikiwiki kiʻekiʻe, hoʻohana nā bearings o kahi turbine mahu i nā bearings paheʻe ʻano journal e pili ana i ke kumumanaʻo o ka lubrication wai. Hoʻokumu ʻia kahi ʻili ʻaila lubricating pressurized ma waena o ka journal shaft a me ka bearing, e hana ana i ka friction wai e hōʻoia i ka hana palekana a paʻa o ka turbine mahu.

 

ʻEhā ʻano nui o nā bearings nui o ka turbine mahu: nā bearings kākoʻo pūpū cylindrical, nā bearings kākoʻo pūpū elliptical, nā bearings kākoʻo wedge ʻekolu-ʻaila, a me nā bearings kākoʻo tilting pad.

 

2. Hana oNā Bearings Hoʻoikaika

ʻO ka hana o kahi thrust bearing ke kū i ka axial thrust o ka rotor i ka wā e hana ana a no ka hoʻoholo a mālama i ke kūlana pili axial o ka turbine rotor a me ka cylinder.

 

Hiki ke hoʻolālā ʻia nā bearings thrust ma ke ʻano he mau ʻāpana kūʻokoʻa a i ʻole e hui pū ʻia me nā bearings kākoʻo i loko o hoʻokahi ʻāpana, i kapa ʻia he bearing i hui pū ʻia (thrust-support i hui pū ʻia).

Ma ke ʻano kūkulu, hiki iā lākou ke ʻano multisegment a i ʻole ke ʻano sector; i kēia manawa, ʻo ke ʻano i hoʻohana nui ʻia ʻo ia ka bearing ʻano sector. ʻO kāna mau ʻāpana nui e komo pū me nā pads hana, nā pads hana ʻole, nā shim hoʻoponopono, a me nā apo hoʻopaʻa.

 

Ma nā ʻaoʻao ʻelua o ka diski hoʻokuʻu, ua hoʻokomo ʻia he ʻumi a ʻumikūmālua mau pads hana a me nā pads hana ʻole. Hoʻokomo ʻia kēlā me kēia pads ma luna o ke apo hoʻopaʻa; hāpai nā pads hana i ka hoʻokuʻu axial mua o ka rotor, a hāpai nā pads hana ʻole i ka hoʻokuʻu axial hope.

 

ʻAʻole maʻamau ka paʻi ʻana o nā pads hana ʻole o ka thrust bearing i kekahi paʻi. Eia nō naʻe, i ka wā e emi koke ai ka ukana o ka turbine, e like me ka hōʻole ʻana i ka ukana, hiki i ka turbine ke loaʻa i ka axial thrust ma ke ʻaoʻao ʻē aʻe o ke kahe ʻana o ka ea. I kēia manawa, kōkua nā pads hana ʻole, ma o kā lākou ʻili ʻaila ʻano wedge, i ke kaulike ʻana i kēia ʻāpana o ka axial thrust, e pale ana i ka neʻe nui ʻana o ka turbine i mua a me ka pale ʻana i nā ulia a me ke komo ʻana ma waena o nā ʻāpana e neʻe ana a me nā ʻāpana paʻa.

 

3. Nā Palena Nānā TSI i ka wā o ka hana ʻana o ka Turbine mahu

1. Kākoʻo i ka mahana metala e hali ana <105°C.

2. Ka mahana o ka metala hāpai pahū < 100°C.

3. Ka mahana o ka ʻaoʻao hana o nā pads thrust < 100°C.

4. Ka mahana o ka maka hana ʻole o nā pads thrust < 100°C.

5. Ka neʻe ʻana o ke axial < 1.2 mm a me > -0.6 mm.

6. Ka hoʻonui ʻokoʻa o ka cylinder kaomi kiʻekiʻe a me ke kaomi waena < 6 mm a me > -3 mm.

7. Haʻalulu o ka pāpale bearing < 0.05 mm, haʻalulu o ka ʻōnaehana shaft < 125μm.

8. Pono e liʻiliʻi ka ʻokoʻa o ka hoʻonui ʻana o nā cylinders hema a me ka ʻākau.