iindaba

Iibheringi zeNkxaso VS Iibheringi zokuThrust

 

1. Iibheringi zeNkxaso kunye nomsebenzi wazo

Iibheringi zenkxasoziyinxalenye ebalulekileyo yeturbine yomphunga. Ibheyaringi ephambili ikwabizwa ngokuba yibheyaringi yeradial.

Umsebenzi wayo kukuxhasa ubunzima bonke berotor kunye namandla e-centrifugal abangelwa kukungalingani kwe-rotor mass, kunye nokuchonga indawo echanekileyo ye-radial yerotor ngaphakathi kwesilinda. Ekubeni i-bearing nganye kufuneka imelane nemithwalo ephezulu kwaye i-shaft journal ijikeleza ngesantya esiphezulu, ii-bearing ze-steam turbine zisebenzisa ii-sliding bearings zohlobo lwe-jenali ngokusekelwe kumgaqo we-fluid lubrication. Ifilimu yeoyile yokuthambisa ecinezelweyo yakha phakathi kwe-shaft journal kunye ne-bearing, ivelisa i-fluid friction ukuqinisekisa ukusebenza okukhuselekileyo nokuzinzileyo kwe-steam turbine.

 

Kukho iintlobo ezine eziphambili zeebheringi eziphambili zeturbine yomphunga: iibheringi zenkxaso yeshell esilinda, iibheringi zenkxaso yeshell esiliqili, iibheringi zenkxaso ye-oyile ene-three-oil wedge, kunye neebheringi zenkxaso yephedi yokuthamba.

 

2. Umsebenzi weIibheringi zokuTsala

Umsebenzi we-thrust bearing kukumelana ne-axial thrust ye-rotor ngexesha lokusebenza kunye nokuchonga nokugcina indawo ye-axial ye-turbine rotor kunye nesilinda.

 

Iibheringi zeThrust zinokuyilwa njengeeyunithi ezizimeleyo okanye zidityaniswe neebheringi zenkxaso zibe yiyunithi enye, ebizwa ngokuba yibheringi edibeneyo (i-thrust-support combined).

Ngokwesakhiwo, zinokuba ziindawo ezininzi okanye zibe ziinxalenye ezahlukeneyo; okwangoku, uhlobo olusetyenziswa kakhulu yibheri ekwimo yecandelo. Izinto eziphambili eziyinxalenye yazo ziquka ii-working pads, ii-non-working pads, ii-adjustment shims, kunye neeringi zokuxhoma.

 

Kumacala omabini ediski yokutyhala, kufakwa ii-pad ezilishumi ukuya kwezilishumi elinesibini ezisebenzayo nezingasebenziyo. I-pad nganye ifakwe kwiringi yokuqhoboshela; ii-pad zokusebenza zithwele i-axial thrust yangaphambili ye-rotor, kwaye ii-pad ezingasebenziyo zithwele i-axial thrust engasemva.

 

Iiphedi ezingasebenziyo zebheri yokutyhala azihlali zithwala naluphi na uhlobo lokutyhala. Nangona kunjalo, xa umthwalo we-turbine wehla ngequbuliso, njengakwimeko yokwaliwa komthwalo, i-turbine inokufumana ukutyhala okujikelezayo kwicala elichaseneyo lokuhamba komoya. Ngeli xesha, iiphedi ezingasebenziyo, ngefilimu yazo yeoyile efana ne-wedge, zinceda ukulinganisela eli candelo lokutyhala okujikelezayo, zithintele ukufuduka okugqithisileyo kwe-turbine phambili kwaye ziphephe ukungqubana kunye nokuguguleka phakathi kweendawo ezihambayo nezimiyo.

 

3. Iiparamitha zokubeka iliso kwi-TSI ngexesha lokusebenza kwe-Steam Turbine

1. Ubushushu besinyithi obuxhasayo < 105°C.

2. Ubushushu bentsimbi ethwala i-Thrust < 100°C.

3. Ubushushu bobuso obusebenzayo bee-thrust pads <100°C.

4. Ubushushu bobuso obungasebenziyo bee-thrust pads <100°C.

5. Ukufuduka kwe-Axial < 1.2 mm kunye > -0.6 mm.

6. Ukwandiswa komahluko wesilinda yoxinzelelo oluphezulu noluphakathi < 6 mm kunye > -3 mm.

7. Ukungcangcazela kwesiciko sebheyari < 0.05 mm, ukungcangcazela kwenkqubo yeshaft < 125μm.

8. Ukuphambuka ekwandiseni iisilinda zasekhohlo nasekunene kufuneka kube kuncinci.