Ivalvu ngokuqhubekayo igcina futhi iqedela izidingo zokusebenza ezinikeziwe phakathi nesikhathi esithile sokusebenza, futhi ukusebenza kokugcina inani lepharamitha elinikeziwe ngaphakathi kwebanga elishiwo kubizwa ngokuthi ukungahluleki.Lapho ukusebenza kwe-valve konakalisiwe, kuzoba Ukungasebenzi kahle kuzokwenzeka.
1. Ukuvuza kwebhokisi lokugxusha
Lesi isici esiyinhloko sokugijima, ukugijima, ukuconsa, nokuvuza, futhi kuvame ukubonakala ezimbonini.
Izizathu zokuvuza kwebhokisi lokugxusha zimi kanje:
①Into esetshenziswayo ayihambelani nokugqwala, izinga lokushisa kanye nengcindezi yendawo yokusebenza;
②Indlela yokugcwalisa ayilungile, ikakhulukazi uma konke ukupakisha kufakwa ku-spiral, cishe kubangele ukuvuza;
③Ukunemba komshini noma ukuqedwa kwangaphezulu kwesiqu se-valve akwanele, noma kukhona i-ovality, noma kukhona iziteketiso;
④Isiqu se-valve siboshiwe, noma sigqwalile ngenxa yokuntuleka kokuvikelwa emoyeni ovulekile;
⑤Isiqu se-valve sigobile;
⑥Ukupakisha kusetshenziswe isikhathi eside futhi sekukhulile;
⑦ Umsebenzi unodlame kakhulu.
Indlela yokuqeda ukuvuza kokupakisha yile:
① Ukukhetha okulungile kokugcwalisa;
②Gcwalisa ngendlela efanele;
③ Uma isiqu se-valve singafaneleki, kufanele silungiswe noma sishintshwe, futhi indawo engaphezulu kufanele okungenani ibe ngu-▽5, futhi okubaluleke nakakhulu, kufanele ifinyelele ku-▽8 noma ngaphezulu, futhi kungabikho okunye ukonakala;
④ Thatha izinyathelo zokuvikela ukuvikela ukugqwala, futhi lezo ezigqwalile kufanele zishintshwe;
⑤Ukugoba kwesiqu se-valve kufanele kuqondiswe noma kuvuselelwe;
⑥Ngemva kokuthi ukupakisha sekusetshenziswe isikhathi esithile, kufanele kushintshwe;
⑦ Umsebenzi kufanele uzinze, uvule kancane futhi uvale kancane ukuze uvimbele ukushintsha okungazelelwe kwezinga lokushisa noma umthelela omaphakathi.
2. Ukuvuza kwezingxenye zokuvala
Ngokuvamile, ukuvuza kwebhokisi lokugxusha kubizwa ngokuthi ukuvuza kwangaphandle, futhi ingxenye yokuvala ibizwa ngokuthi ukuvuza kwangaphakathi.Ukuvuza kwezingxenye zokuvala, ngaphakathi kwe-valve, akulula ukukuthola.
Ukuvuza kwezingxenye ezivalayo kungahlukaniswa izigaba ezimbili: enye iwukuvuza kwendawo yokuvala, kanti enye iwukuvuza kwempande yendandatho yokuvala.
Izimbangela zokuvuza yizi:
①Indawo yokuvala ayiphansi kahle;
②Indandatho yokuvala ayifani ngokuqinile nesihlalo se-valve nediski ye-valve;
③Ukuxhumana phakathi kwediski ye-valve nesiqu se-valve akuqinile;
④Isiqu se-valve sigobile futhi sisontekile, ukuze izingxenye zokuvala ezingaphezulu nezingezansi zingagxili;
⑤Vala ngokushesha okukhulu, indawo yokuvala ayixhumene kahle noma yonakale isikhathi eside;
⑥ ukukhethwa kwempahla engafanele, ayikwazi ukumelana nokugqwala kwe-medium;
⑦Sebenzisa i-globe valve kanye ne-valve yesango njenge-valve elawulayo.Indawo evalayo ayikwazi ukumelana nokuguguleka kwendawo egeleza ngesivinini esikhulu;
⑧Eminye imithombo yezindaba izophola kancane kancane ngemva kokuba i-valve ivaliwe, ukuze indawo yokuvala ibonakale i-slits, futhi ukuguguleka kuzokwenzeka;
⑨Uxhumano oluwuchungechunge lusetshenziswa phakathi kwezinye izindawo zokuvala kanye nesihlalo sevalvu kanye nediski ye-valve, okulula ukukhiqiza umehluko wokuhlushwa komoyampilo webhethri nokugqwala okuxekethile;
⑩Ivalvu ayikwazi ukuvalwa ngokuqinile ngenxa yokushumeka kokungcola okufana nokushisela i-slag, ukugqwala, uthuli, noma izingxenye eziwumshini kusistimu yokukhiqiza eziwa futhi zivimbe umgogodla wevalvu.
Izinyathelo zokuvimbela yilezi:
①Ngaphambi kokusetshenziswa, kufanele uhlole ngokucophelela ingcindezi nokuvuza, futhi uthole ukuvuza kwendawo evalayo noma impande yendandatho yokuvala, bese uyisebenzisa ngemva kokwelashwa;
②Kudingeka ukuhlola kusenesikhathi ukuthi izingxenye ezihlukahlukene ze-valve zisesimweni esihle yini.Ungasebenzisi i-valve lapho isiqu se-valve sigobile noma sisontekile noma idiski ye-valve kanye nesiqu se-valve akuxhumekile ngokuphephile;
③Ivalvu kufanele ivalwe ngokuqinile, hhayi ngodlame.Uma uthola ukuthi ukuxhumana phakathi kwezindawo zokuvala uphawu akukuhle noma kukhona ukuvinjelwa, kufanele uvule ngokushesha isikhashana ukuze uvumele udoti uphume, bese uvala ngokucophelela;
④Uma ukhetha i-valve, akufanele kubhekwe kuphela ukumelana nokugqwala komzimba we-valve, kodwa futhi ukumelana nokugqwala kwezingxenye ezivalayo kufanele kucatshangelwe;
⑤ Ngokuhambisana nezici zesakhiwo se-valve nokusetshenziswa okulungile, izingxenye ezidinga ukulungisa ukugeleza kufanele zisebenzise i-valve elawulayo;
⑥Esimeni lapho i-medium ipholile futhi umehluko wezinga lokushisa mkhulu ngemva kokuvala i-valve, i-valve kufanele ivalwe ngokuqinile ngemva kokupholisa;
⑦ Lapho isihlalo se-valve, i-valve disc kanye nendandatho yokuvala ixhunywe ngentambo, i-PTFE tape ingasetshenziswa njengokupakisha phakathi kwemicu, ukuze kungabikho igebe;
⑧Isihlungi kufanele sengezwe phambi kwe-valve ye-valve engase iwele ekungcoleni.
3. Ukuhluleka kwe-valve stem lift
Izizathu zokwehluleka ukuphakamisa i-valve stem yilezi:
①Intambo yonakele ngenxa yokusebenza ngokweqile;
② ukuntuleka kokugcotshwa noma ukuhluleka kokugcoba;
③Isiqu se-valve sigobile futhi sisontekile;
④Ukuqedwa kwendawo akwanele;
⑤ Ukubekezelela okufanelekile akunembile, futhi ukuluma kuqinile kakhulu;
⑥I-valve stem nut incike;
⑦ Ukukhethwa kwempahla engalungile, isibonelo, isiqu se-valve kanye ne-valve stem nut zenziwe ngento efanayo, okulula ukuyiluma;
⑧Umucu udliwe yi-medium (kubhekiselwa ku-valve ene-stem valve emnyama noma i-valve ene-stem nut phansi);
⑨Ivalvu evulekile ayinaso isivikelo, futhi intambo ye-valve stem imbozwa uthuli nesihlabathi, noma igqwaliswe imvula, amazolo, isithwathwa nesithwathwa.
Izindlela zokuvimbela:
① Ukusebenza ngokucophelela, ungaphoqi lapho uvala, ungafinyeleli endaweni efile ephezulu lapho uvula, vula isondo elilodwa noma amabili ngemva kokuvula ngokwanele ukwenza uhlangothi olungaphezulu lwentambo luvaleke, ukuze uvimbele okuphakathi ekuphusheni i-valve. gxila phezulu ukuze ube nomthelela;
②Hlola isimo sokuthambisa njalo futhi ugcine isimo esivamile sokuthambisa;
③Ungavuli futhi uvale i-valve nge-lever ende.Abasebenzi abajwayele ukusebenzisa i-lever emfushane kufanele balawule ngokuqinile inani lamandla ukuvimbela ukusonteka kwesiqu se-valve (ebhekisela ku-valve exhunywe ngokuqondile nesondo lesandla kanye ne-valve stem);
④Thuthukisa ikhwalithi yokucubungula noma ukulungisa ukuze kuhlangatshezwane nezidingo zokucaciswa;
⑤Impahla kufanele imelane nokugqwala futhi ivumelane nezinga lokushisa lokusebenza nezinye izimo zokusebenza;
⑥I-valve stem nut akufanele yenziwe ngento efanayo nesiqu se-valve;
⑦ Uma usebenzisa ipulasitiki njenge-valve stem nut, amandla kufanele ahlolwe, hhayi kuphela ukumelana nokugqwala okuhle kanye ne-coefficient encane yokungqubuzana, kodwa futhi nenkinga yamandla, uma amandla enganele, ungayisebenzisi;
⑧Isembozo sokuvikela isiqu se-valve kufanele sengezwe ku-valve yomoya evulekile;
⑨Ngokuvula i-valve evamile, vula isondo lesandla njalo ukuze uvimbele isiqu se-valve ekugqwaleni.
4. Okunye
Ukuvuza kwe-Gasket:
Isizathu esiyinhloko ukuthi ayimelani nokugqwala futhi ayihambisani nezinga lokushisa elisebenzayo nokucindezela;kanye nokushintsha kwezinga lokushisa kwe-valve yokushisa ephezulu.
Sebenzisa ama-gaskets afanele izimo zokusebenza.Hlola ukuthi impahla ye-gasket iwafanele yini ama-valve amasha.Uma ingafaneleki, kufanele ishintshwe.Ukuze uthole ama-valve okushisa aphezulu, qinisa amabhawodi futhi ngesikhathi sokusebenzisa.
Umzimba we-valve ephukile:
Ngokuvamile kubangelwa ukuqandisa.Lapho isimo sezulu sibanda, i-valve kufanele ibe ne-thermal insulation kanye nezinyathelo zokulandelela ukushisa.Uma kungenjalo, amanzi kuvalvu kanye nepayipi elixhumayo kufanele kukhishwe ngemva kokumiswa kokukhiqiza (uma kunepulaki ngaphansi kwevalvu, ipulaki ingavulwa ukuze ikhiphe).
Isondo lesandla elilimele:
Ibangelwa umthelela noma ukusebenza okuqinile kwe-lever ende.Kungagwenywa inqobo nje uma umqhubi kanye nabanye abasebenzi abathintekayo benaka.
I-packing gland iphukile:
Amandla angalingani lapho ucindezela ukupakisha, noma indlala engasebenzi kahle (imvamisa insimbi eyinsimbi).Cindezela ukupakisha, zungezisa isikulufu ngokulinganayo, futhi ungatsheki.Lapho ukhiqiza, akufanele nje unake izingxenye ezinkulu nezibalulekile, kodwa futhi unake izingxenye zesibili ezifana nezindlala, ngaphandle kwalokho kuzothinta ukusetshenziswa.
Ukuxhumana phakathi kwesiqu se-valve ne-valve plate kwehluleka:
I-valve yesango ithatha izinhlobo eziningi zokuxhuma phakathi kwekhanda elingunxande lesiqu se-valve kanye ne-groove emise okwe-T yesango, futhi i-groove emise okwe-T ngezinye izikhathi ayicutshungulwa, ngakho ikhanda elingunxande le-valve stem ligqoka ngokushesha.Ikakhulukazi esicini sokukhiqiza esizoxazululwa.Kodwa-ke, umsebenzisi angakwazi futhi ukwenza i-groove emise okwe-T ukuze ayenze ibe nokushelela okuthile.
Isango le-valve yesango eliphindwe kabili alikwazi ukucindezela ikhava ngokuqinile:
Ukushuba kwesango eliphindwe kabili kukhiqizwa yi-wedge ephezulu.Kwamanye ama-valve esango, i-wedge ephezulu ingeyensimbi ensimbi yezinga eliphansi), futhi izogqokwa noma iphuke ngokushesha ngemva kokusetshenziswa.I-wedge ephezulu iyisiqephu esincane, futhi impahla esetshenzisiwe ayiningi.Umsebenzisi angayenza nge-carbon steel futhi athathe indawo ye-cast iron yasekuqaleni.
Isikhathi sokuthumela: Apr-18-2022