izindaba

Ama-Bearings Okusekela VS Ama-Thrust Bearings

 

1. Ama-Bearings Okusekela kanye Nomsebenzi Wawo

Amabheringi okusekelaziyisici esibalulekile se-turbine yomusi. I-bearing eyinhloko ibizwa nangokuthi i-radial bearing.

Umsebenzi wayo ukusekela isisindo sonke se-rotor kanye namandla e-centrifugal abangelwa ukungalingani kwesisindo se-rotor, kanye nokunquma indawo efanele ye-radial ye-rotor ngaphakathi kwesilinda. Njengoba i-bearing ngayinye kumele imelane nemithwalo ephezulu futhi i-shaft journal ijikeleza ngesivinini esikhulu, ama-bearing e-steam turbine asebenzisa ama-sliding bearing ohlobo lwe-jenali ngokusekelwe esimisweni sokugcotshwa koketshezi. Ifilimu kawoyela wokugcoba ocindezelwe yakha phakathi kwe-shaft journal kanye ne-bearing, idala ukungqubuzana koketshezi ukuqinisekisa ukusebenza okuphephile nokuzinzile kwe-steam turbine.

 

Kunezinhlobo ezine eziyinhloko zama-main bearings e-steam turbine: ama-cylindrical shell support bearings, ama-elliptical shell support bearings, ama-three-oil wedge support bearings, kanye nama-tilting pad support bearings.

 

2. Umsebenzi weAma-Thrust Bearings

Umsebenzi we-thrust bearing ukumelana ne-axial thrust ye-rotor ngesikhathi sokusebenza kanye nokunquma nokugcina isikhundla se-axial se-turbine rotor kanye nesilinda.

 

Ama-Thrust bearing angaklanywa njengamayunithi azimele noma ahlanganiswe nama-support bearing abe yiyunithi eyodwa, ebizwa ngokuthi i-combined (thrust-support combined) bearing.

Ngokwesakhiwo, zingaba yizingxenye eziningi noma zibe sesimweni somkhakha; okwamanje, uhlobo olusetshenziswa kakhulu yi-bearing efana nomkhakha. Izingxenye zayo eziyinhloko zifaka ama-working pads, ama-non-working pads, ama-adjustment shims, kanye nama-mounting rings.

 

Kuzo zombili izinhlangothi zediski yokudonsa, kufakwa ama-pad asebenzayo ayishumi kuya kwayishumi nambili kanye nangasebenzi. I-pad ngayinye ifakwe endandatho yokubopha; ama-pad asebenzayo aphethe i-axial thrust yangaphambili ye-rotor, kanti ama-pad angasebenzi aphethe i-axial thrust ebuyela emuva.

 

Ama-pad angasebenzi e-thrubber bearing awavami ukuthwala noma yikuphi ukuphoqa. Kodwa-ke, lapho umthwalo we-turbine wehla ngokuzumayo, njengasekwenqatshweni komthwalo, i-turbine ingase ibhekane nokuphoqa okuqondile komoya okuphambene. Ngalesi sikhathi, ama-pad angasebenzi, ngefilimu yawo kawoyela emise okwe-wedge, asiza ukulinganisela le ngxenye yokuphoqa okuqondile, ukuvimbela ukufuduka okukhulu kwe-turbine phambili nokugwema ukushayisana nokuguguleka phakathi kwezingxenye ezihambayo nezimile.

 

3. Amapharamitha Okuqapha i-TSI Ngesikhathi Sokusebenza Kwe-Steam Turbine

1. Ukusekela izinga lokushisa lensimbi elithwalayo < 105°C.

2. Izinga lokushisa lensimbi elithwala i-Thrust < 100°C.

3. Izinga lokushisa lobuso elisebenzayo lama-thrust pads <100°C.

4. Izinga lokushisa lobuso elingasebenzi lama-thrust pads <100°C.

5. Ukufuduka kwe-Axial < 1.2 mm kanye no-> -0.6 mm.

6. Ukwandiswa komehluko wesilinda esinomfutho ophezulu nophakathi < 6 mm kanye > -3 mm.

7. Ukudlidliza kwesivalo sebhereyi < 0.05 mm, ukudlidliza kohlelo lomgodi < 125μm.

8. Ukuphambuka ekukhuleni okulinganiselwe kwamasilinda angakwesokunxele nakwesokudla kufanele kube kuncane.