Uma indawo yokufaka ilinganiselwe, sicela unake:

I-valve yesango ingavalwa ngokuqinile ngendawo yokuvala ngokucindezela okuphakathi, ukuze kuzuzwe umphumela wokungavuzi.Lapho uvula futhi uvala, i-valve core kanye nendawo yokuvala isihlalo se-valve zihlala zithintana futhi zikhuhlana komunye nomunye, ngakho indawo yokuvala kulula ukuyigqoka.Uma i-valve yesango isiseduze nokuvalwa, umehluko wengcindezi phakathi kwengaphambili nengemuva lepayipi mkhulu, okwenza indawo yokuvala igqoke kakhulu.

Isakhiwo se-valve yesango sizoba yinkimbinkimbi kakhulu kune-valve yembulunga.Ngokombono wokubukeka, i-valve yesango yinde kune-globe valve futhi i-globe valve yinde kune-valve yesango ngaphansi kobubanzi obufanayo.Ngaphezu kwalokho, ama-valve esango ahlukaniswe abe yizinduku ezivulekile nezinduku ezimnyama.I-valve yokuvala ayifuni.

Ingabe i-valve yeglobhu ne-valve yesango kungaxutshwa?

isimiso sokusebenza

Lapho i-valve yembulunga ivulwa futhi ivaliwe, iwuhlobo lwesiqu se-valve ekhuphukayo, okusho ukuthi, lapho isondo lesandla liphendulwa, isondo lesandla lizojikeleza futhi liphakamise kanye nesiqu se-valve.I-valve yesango iwukuzungezisa isondo lesandla ukwenza isiqu se-valve siye phezulu naphansi, futhi ukuma kwesondo lesandla ngokwalo kuhlala kungashintshile.

Amazinga okugeleza ayahluka, amavalvu esango adinga ukuvuleka noma ukuvaleka ngokugcwele, namavalvu eglobhu awafuni.Amavalvu eglobhu anezikhombisi-ndlela zokungena neziphumayo, kuyilapho amavalvu esango engenazo izimfuneko zezikhombisi-ndlela zokungena nokuphumayo.

Ngaphezu kwalokho, i-valve yesango inezifunda ezimbili kuphela: ivulekile ngokugcwele noma ivaliwe ngokugcwele, isango lokuvula nokuvala i-stroke inkulu, futhi isikhathi sokuvula nokuvala side.I-stroke yokunyakaza ye-valve plate ye-globe valve incane kakhulu, futhi i-valve plate ye-globe valve ingama endaweni ethile ngesikhathi sokunyakaza kokulawula ukugeleza.I-valve yesango ingasetshenziselwa ukunqanyulwa kuphela futhi ayinayo eminye imisebenzi.

Umehluko wokusebenza

I-valve ye-globe ingasetshenziselwa kokubili ukulawulwa kokusika nokugeleza.Ukumelana noketshezi lwe-valve yembulunga kukhulu uma kuqhathaniswa, futhi kuba nzima kakhulu ukuvula nokuvala, kodwa ngenxa yokuthi ibanga phakathi kwepuleti le-valve nendawo yokuvala lifushane, ukuvuleka nokuvala kufushane.

Ngenxa yokuthi i-valve yesango ingavulwa ngokugcwele futhi ivalwe ngokugcwele, lapho ivuliwe ngokugcwele, ukumelana nokugeleza okuphakathi esiteshini somzimba we-valve cishe ku-0, ngakho-ke ukuvulwa nokuvalwa kwe-valve yesango kuzosindisa kakhulu umsebenzi, kodwa isango likude nendawo yokuvala, futhi isikhathi sokuvula nokuvala side..

ukufakwa nokugeleza

Ii-valve yesangoinomphumela ofanayo kuzo zombili izinkomba.Asikho isidingo sokuqondiswa kwe-inlet ne-outlet, futhi okuphakathi kungageleza kuzo zombili izinkomba.I-valve yembulunga idinga ukufakwa ngokuhambisana ngokuqinile nesiqondiso esimakwe umcibisholo osemzimbeni we-valve.Kukhona nomthethonqubo ocacile mayelana nesiqondiso sokungena nokuphuma kwe-valve yembulunga.“Izinqubo zamakhemikhali ezintathu” zamavalvu ezweni lami zisho ukuthi indlela yokugeleza kwevalvu yomhlaba kufanele isuke phezulu iye phansi.

Ivalvu yembulunga iphansi futhi iphezulu ngaphandle, futhi kusobala ngaphandle ukuthi ipayipi alikho emugqeni ovundlile wesigaba esisodwa.Ishaneli yokugeleza kwevalvu yesango ikumugqa ovundlile.I-stroke ye-valve yesango inkulu kunaleyo ye-valve yembulunga.

Ngokombono wokumelana nokugeleza, ukumelana nokugeleza kwe-valve yesango kuncane uma kuvuliwe ngokugcwele, futhi ukumelana nokugeleza kwe-valve yokuhlola umthwalo kukhulu.I-coefficient yokumelana nokugeleza kwama-valve wesango ajwayelekile cishe i-0.08 ~ 0.12, amandla okuvula nokuvala mancane, futhi okuphakathi kungageleza ngezindlela ezimbili.Ukumelana nokugeleza kwama-valve embulunga ajwayelekile izikhathi ezi-3-5 kunama-valve esango.Lapho uvula futhi uvala, idinga ukuphoqeleka ukuvala ukuze kuzuzwe uphawu.I-valve core ye-valve yembulunga ithinta kuphela indawo yokuvala lapho ivalwe ngokuphelele, ngakho ukuguga kwendawo yokuvala kuncane kakhulu.Ngenxa yokugeleza okukhulu kwamandla amakhulu, i-valve yembulunga edinga i-actuator kufanele inake indlela yokulawula itorque.Ukulungisa.

Kunezindlela ezimbili zokufaka i-valve yomhlaba.Enye ukuthi i-medium ingangena isuka phansi kwe-valve core.Inzuzo yukuthi ukupakisha akukho ngaphansi kwengcindezi lapho i-valve ivaliwe, engandisa impilo yesevisi yokupakisha futhi ingathwala ingcindezi epayipini ngaphambi kwe-valve.Ngaphansi kwesimo, ukushintshwa kokupakisha kwenziwa;okungalungile ukuthi i-torque yokushayela ye-valve inkulu, cishe izikhathi ezingu-1 zokugeleza okuphezulu, amandla e-axial esiqwini se-valve makhulu, futhi i-valve stem kulula ukugoba.

Ngakho-ke, le ndlela ngokuvamile ifaneleka kuphela amavalvu eglobhu anobubanzi obuncane (ngezansi kwe-DN50), futhi amavalvu embulunga angaphezu kwe-DN200 asebenzisa indlela okugeleza okuphakathi kuyo kusuka phezulu.(I-valve yeglobhu kagesi ngokuvamile ithatha indlela yokungena endaweni ephakathi nendawo usuka phezulu.) Ububi bokungena endaweni ophakathi kuyo ukusuka phezulu kuphambene nje nendlela yokungena usuka phansi.

vala

Indawo yokuvala ye-valve yembulunga iwuhlangothi oluncane lwe-trapezoidal lwe-valve core (ikakhulukazi ngokuma kwe-valve core).Uma i-valve core iwa, ilingana nokuvalwa kwe-valve (uma umehluko wengcindezi mkhulu, yebo, awuvalwanga ngokuqinile, kodwa umphumela wokulwa ne-reverse awubi).I-valve yesango ivalwe eceleni kwesango eliwumgogodla we-valve.