Ungayikhetha Kanjani Indlela Yokubeka uphawu Ku-Machining Design?

1.Packing Seal

Ngokwezici zayo zokwakheka, izimpawu zokupakisha zingahlukaniswa nge:

• Uphawu lokupakisha oluthambile
• Uphawu lokupakisha olunzima
• Kwakhiwe uphawu lokupakisha

A. Uphawu lokupakisha oluthambile

Uhlobo lokupakisha oluthambile: Ukupakisha

Ukupakisha kuvame ukwelukwa ngemicu ethambile bese kugcwaliswa emgodini ovaliwe ngemichilo enendawo eyisikwele enqamulelayo. Amandla okucindezela akhiqizwa yindlala ukucindezela ukupakisha nokuphoqa ukupakisha ukuthi kucindezelwe endaweni yokubekwa uphawu (umphini). Ebusweni obungaphandle nasemgodini ovaliwe), amandla osabalalayo womphumela wokufaka uphawu akhiqizwa, ngaleyo ndlela kudlala indima yokubekwa uphawu.

Izikhathi ezisebenzayo zokupakisha okuthambile:

Impahla yokupakisha ekhethelwe ukupakisha inquma umphumela wokufaka uphawu kokupakisha. Ngokuvamile, izinto zokupakisha zikhawulelwe ukushisa, ingcindezi kanye ne-pH yokusebenza okuphakathi, nobukhulu besimo kanye nokuqina kwemishini yokusebenza lapho ukupakisha kusebenza khona nejubane lomugqa, njll, kuzoba nezidingo zokukhetha izinto zokupakisha. Ukupakisha kwe-graphite kungamelana nokushisa okuphezulu kanye nengcindezi ephezulu, futhi ngomunye wemikhiqizo esebenza kahle kakhulu ukuxazulula inkinga yokushisa okuphezulu nokufakwa uphawu kwengcindezi ephezulu. Corrosion ukumelana, omuhle kakhulu uphawu ukusebenza, umsebenzi ezinzile futhi onokwethenjelwa. Ukupakisha kwe-Aramid luhlobo lwe-fiber enamandla amakhulu. Ukupakisha okwelukiwe kufakwe i-polytetrafluoroethylene emulsion ne-lubricant. Ukupakisha kwe-Polytetrafluoroethylene kwenziwa nge-resin ehlanzekile ye-polytetrafluoroethylene njengempahla eluhlaza, eyenziwe kuqala yaba yifilimu eluhlaza, bese isontekile, ilukiwe futhi ilukelwe yapakisha. Ingasetshenziswa kabanzi ekudleni, ekwenziweni kwemithi, ekwenzeni iphepha, kumakhemikhali fiber, njll. Izidingo zenhlanzeko, kanye I-valves kanye namaphampu anemidiya eqinile eyonakalisayo.

B. Uphawu lokupakisha olunzima

Kunezinhlobo ezimbili zezimpawu zokupakisha ezinzima: indandatho yokuhlukanisa nendandatho yokuhlukanisa.

Seal 2.Mechanical Icubungula

Uphawu lwemishini luhlala luqukethe izingxenye ezimbili, ingxenye ejikelezayo (ingxenye ephuzi) nengxenye emile (ingxenye ewolintshi). Lezi zindawo ezimbili ezihambisanayo ezihambayo nezindandatho ziba yindawo enkulu yokuvala uphawu.

Izimpawu zemishini zibizwa nangokuthi ama-end face seal. Ngokuya ngamazinga afanele kazwelonke, achazwa njengalezi: ubuncane bobuso bokugcina obucishe buqonde ngqo ku-eksisi yokujikeleza bugcinwa busondelene futhi buslayida ngokuhlobene komunye nomunye ngaphansi kokubambisana kwengcindezi yamanzi kanye namandla e-elastic (noma amandla kazibuthe) wendlela yesinxephezelo kanye nophawu olusizayo. Yakhiwe ukuvimbela ukuvuza koketshezi.

3.Dry negesi Seal

Igesi eyomile, noma "uphawu lwegesi olomile", luhlobo olusha lwensimbi yokugcina shaft esebenzisa ubuchwepheshe bokubekwa uphawu obuthile bokufaka uphawu lwegesi, futhi uphawu olungaxhumani nalo.

Izici:

Ukusebenza kahle kokufaka uphawu, impilo ende, asikho isidingo sokufaka uphawu kohlelo lukawoyela, ukusetshenziswa kwamandla okuphansi, ukusebenza okulula nokusebenza okuphansi nezindleko zokugcina. Njengohlelo lokufaka uphawu lokunakekelwa olungadingi ukuvalwa kobuso bokugcina bokugcoba nokugcoba uwoyela, izimpawu zomoya owomile zithatha indawo yezimpawu zamanzi ezintantayo nezimpawu ze-labyrinth ukuze zibe uphawu oluphambili lwesigxobo se-shaft se-high-speed centrifugal compressors embonini ye-petrochemical .

Izicelo:

Imishini esheshayo ene-fluid efana ne-centrifugal compressors ifanele izimo zokusebenza lapho inani elincane lenqubo igesi ivuza emkhathini ngaphandle kokulimala, njenge-air compressors, i-nitrogen compressors, njll.

4.Uphawu lweLabyrinth

Uphawu lwe-labyrinth ukusetha inqwaba yamazinyo okufaka uphawu okuyindilinga ahlelwe ngokulandelana okuzungeze ishafti ejikelezayo. Uchungechunge lwezikhala zokunqandeka nezimbobo zokunweba zakheka phakathi kwamazinyo namazinyo. Lapho okuphakathi okuvaliwe kudlula esikhaleni selabyrinth elibuhlungu, kuveza umphumela wokujiya ukuvimbela ukuvuza.

I-labyrinth seal iyindlela eyisisekelo yokufaka uphawu phakathi kwezigaba nemikhawulo ye-shaft yama-centrifugal compressors. Ngokuya ngezici ezahlukahlukene zokwakheka, ingahlukaniswa ngezinhlobo ezine: bushelelezi, zigzag, inyathelwe noju lwezinyosi.

A. Smooth labyrinth uphawu

I-labyrinth seal ebushelelezi inezakhiwo ezimbili: ukuhlanganiswa nokufakwa. Inesakhiwo esilula futhi kulula ukusikhiqiza, kepha umphumela wokufaka uphawu ubi.

B. Zigzag labyrinth uphawu

Uphawu lwe-zigzag labyrinth luphinde luhlukaniswe lwaba izakhiwo ezimbili: konke nokufakwa. Isici sokwakhiwa kwalesi sigxivizo se-labyrinth ukuthi ukuphakama okuphuma kwamazinyo okubeka uphawu kuhlukile, futhi amazinyo aphakeme futhi aphansi ahlelwe ngokushintshana, futhi indawo yokulinganisa efanayo iyindawo ekhethekile ye-concave-convex groove, isakhiwo se-high and low amazinyo afaniswe ne-groave-convex groove enza igebe lokufaka uphawu elibushelelezi libe uhlobo lwe-zigzag, ngakho-ke, ukumelana nokugeleza kuyanda futhi ukusebenza kahle kokuvala kuyathuthukiswa. Kepha ingasetshenziswa kuphela kumasilinda noma okwahlukaneni okunendawo ehlukaniswe ngokuvundlile, futhi umzimba wokufaka uphawu kumele wenziwe futhi ube uhlobo oluhlukaniswe phakathi.

C. Isigaxa se-labyrinth esinyathelwe

Kusukela ekuhlaziyweni kwesakhiwo, uphawu lwe-labyrinth olunyathulwayo luyafana nolwe-labyrinth olubushelelezi, kepha umphumela wokufaka uphawu uyafana nophiko lwe-zigzag labyrinth, futhi luvame ukusetshenziselwa ikhava ye-impeller ne-disc disc.

D. uphawu lwezinyosi lwezinyosi

Amazinyo okuvalwa kophawu lwe-honeycomb labyrinth afakwa ku-honeycomb shape ukwakha igumbi lokunweba eliyinkimbinkimbi. Ukusebenza kwayo kokufaka uphawu kungcono kunendlela ejwayelekile yokubekwa uphawu, futhi kufanelekile ngezikhathi ezinokuhlukahluka okukhulu kwengcindezi, okufana ne-balance disc seal ye-centrifugal compressor. Uphawu lwe-honeycomb labyrinth lunenqubo yokukhiqiza eyinkimbinkimbi, amandla aphezulu eshidi lokufaka uphawu, nomphumela omuhle wokubekwa uphawu.

5.Oil Seal

Uphawu lwophawu lukawoyela luphawu lokuqinisa umlomo oluqinisa ngokwakho ngesakhiwo esilula, usayizi omncane, izindleko eziphansi, ukugcinwa okulula, ne-torque ephansi yokumelana. Ayikwazi ukuvimbela kuphela ukuvuza kwendawo, kepha futhi ivimbele ukungena kothuli lwangaphandle nezinye izinto eziyingozi. Kukhona izinga elithile lesinxephezelo ngokugqoka, kepha alikwazi ukumelana nengcindezi ephezulu, ngakho-ke lisetshenziswa kakhulu kumaphampu amakhemikhali ngezikhathi ezinengcindezi ephansi.

6.Phawu Lamandla

Lapho iphampu yamakhemikhali isebenza, ikhanda lengcindezi elikhiqizwa yindiza yokusiza lilinganisa uketshezi olunengcindezi enkulu lapho kuphuma khona ugesi omkhulu, ngaleyo ndlela kufinyeleleke ekuvalweni. Lapho kupakwa, indiza esizayo ayisebenzi, ngakho-ke kufanele ifakwe okokufaka uphawu lokupaka ukuxazulula ukuvuza kwepompo yamakhemikhali okungenzeka ngesikhathi sokupaka. I-impeller yokusiza inesakhiwo sokufaka uphawu esilula, ukubekwa uphawu okuthembekile nokuphila isikhathi eside. Iphampu yamakhemikhali ingafinyelela emanzini angenawo amanzi uma isebenza, ngakho-ke ijwayele ukusetshenziselwa amaphampu amakhemikhali ahambisa imidiya yokungcola.

7.Isigxivizo Sokuphefumula

Kuvunguza uphawu futhi luhlobo lwamandla ashukumisayo. Kuyindawo ekhonjiwe eyakhiwe ngomshini oshintshashintshayo noma emkhonweni weshoba, futhi indawo yokufaka uphawu igcwaliswa phakathi komphongolo nomkhono. Ukushintshwa kweshaft kubangela ukuthi inkatho evunguza ikhiqize umphumela wokudlulisa ofana nalowo wepompo, ngaleyo ndlela uvimbele ukuvuza koketshezi lokuvala. Usayizi wamandla alo wokubeka uphawu uhlobene ne-helix angle, iphimbo, ububanzi bezinyo, ukuphakama kwamazinyo, ubude bezinyo obusebenzayo nosayizi wegebe phakathi komphini nomkhono. Njengoba kungekho kungqubuzana phakathi kwezimpawu, impilo yensizakalo yinde, kepha ngenxa yomkhawulo wesakhiwo, ubude bokuvama ngokuvamile bufushane, ngakho-ke amandla okubeka uphawu nawo anciphile. Lapho ipompo isetshenziswa ngejubane elincishisiwe, umphumela wayo wokufaka uphawu uzokwehliswa kakhulu.

Xhumanisa nale ndatshana: Ungayikhetha Kanjani Indlela Yokubeka uphawu Ku-Machining Design

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