Ama-valve e-globe, amavalvu esango, amavalvu ovemvane, amavalvu okuhlola, amavalvu ebhola, njll. zonke ziyizingxenye zokulawula ezibalulekile ezinhlelweni zamapayipi ahlukahlukene. I-valve ngayinye ihlukile ngokubukeka, ukwakheka kanye nokusetshenziswa okusebenzayo. Nokho, i-valve yembulunga kanye ne-valve yesango kunokufana okuthile ngokubukeka, futhi zombili zinomsebenzi wokunqamula epayipini, ngakho abangane abaningi abangathintani kancane namavalvu bayokudida kokubili. Eqinisweni, uma ubhekisisa kahle, umehluko phakathi kwevalve yembulunga nevalve yesango mkhulu kakhulu.

1 Isakhiwo

Lapho indawo yokufaka ilinganiselwe, kufanele unake ukukhetha. 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-valvezihlale zithintana futhi zigudlana, ngakho indawo yokuvala kulula ukuyigqoka. Uma i-valve yesango isiseduze nokuvalwa, umehluko wengcindezi phakathi kwengaphambili nangemuva kwepayipi mkhulu kakhulu, okwenza indawo yokuvala igqoke kakhulu. Isakhiwo se-valve yesango sizoba yinkimbinkimbi kakhulu kune-valve yembulunga. Ngokombono wokubukeka, ngaphansi kwesilinganiso esifanayo, i-valve yesango iphakeme kune-valve yembulunga, futhi i-valve yembulunga yinde kune-valve yesango. Ngaphezu kwalokho, i-valve yesango nayo ihlukaniswe ibe yisiqu esikhuphukayo kanye nesiqu esifihliwe. I-valve yembulunga ayinayo.

2 Umgomo wokusebenza

Lapho i-valve yokumisa ivuliwe futhi ivaliwe, iwuhlobo lwe-valve stem ekhuphukayo, okungukuthi, lapho isondo lesandla liphendulwa, isondo lesandla lizojikeleza futhi likhuphuke futhi liwe nesiqu se-valve. I-valve yesango iphendulela isondo lesandla ukwenza isiqu se-valve sikhuphuke futhi siwe, futhi indawo ye-handwheel ngokwayo ihlala ingashintshiwe. Izinga lokugeleza lihlukile. I-valve yesango idinga ukuvulwa okugcwele noma ukuvala okugcwele, kuyilapho i-valve yokumisa ingakwenzi. I-valve yokumisa inezikhombisi-ndlela zokungena nokuphumayo; i-valve yesango ayinazo izidingo zendlela yokungena nokuphuma.Ngaphezu kwalokho, i-valve yesango inezifunda ezimbili kuphela: ukuvulwa okugcwele noma ukuvala okugcwele. Isango lokuvula nokuvala i-stroke likhulu futhi isikhathi sokuvula nokuvala side. I-valve plate movement stroke ye-valve yokumisa incane kakhulu, futhi ipuleti le-valve ye-valve yokumisa lingama endaweni ethile ngesikhathi sokunyakaza kokulawula ukugeleza. I-valve yesango ingasetshenziselwa ukusika kuphela futhi ayinayo eminye imisebenzi.

3 Umehluko wokusebenza

I-valve yokumisa ingasetshenziselwa kokubili ukusikaoff and flow regulation. Ukumelana noketshezi lwe-valve yokumisa kukhulu uma kuqhathaniswa, futhi kuba nzima kakhulu ukuvula nokuvala, kodwa ngenxa yokuthi ipuleti le-valve lifushane endaweni yokuvala, i-stroke yokuvula nokuvala kufushane. Ngenxa yokuthi i-valve yesango ingavulwa ngokugcwele futhi ivalwe ngokugcwele, lapho isivulwe ngokugcwele, ukumelana nokugeleza okuphakathi esiteshini somzimba we-valve cishe ku-0, ngakho-ke i-valve yesango izosindisa kakhulu umsebenzi ukuvula nokuvala, kodwa isango. ikude nendawo yokuvala, futhi isikhathi sokuvula nokuvala side.

4 Indlela yokufaka nokugeleza

I-valve yesango inomphumela ofanayo kuzo zombili izinkomba, futhi asikho isidingo sezinkomba zokungena nokuphuma ngesikhathi sokufakwa, futhi okuphakathi kungageleza kuzo zombili izinkomba. I-valve yokumisa idinga ukufakwa ngokuqinile ekuqondeni kophawu lomcibisholo emzimbeni we-valve. Kukhona nomthethonqubo ocacile eziqondisweni zokungena nokuphuma kwe-valve yokumisa. ivalvu yezwe lami ethi “three-in-one” ibeka ukuthi indlela yokugeleza kwevalvu yokumisa ihlale isuka phezulu iye phansi.

I-valve yokumisa iwukungena okuphansi nokuphuma okuphezulu, futhi kusukela ngaphandle kusobala ukuthi ipayipi alikho kulayini ovundlile ofanayo. Ishaneli yokugeleza kwevalvu yesango ikumugqa ofanayo ovundlile. I-stroke ye-valve yesango inkulu kunaleyo ye-valve yokumisa.

Ngokombono wokumelana nokugeleza, i-valve yesango inokumelana nokugeleza okuncane lapho ivuliwe ngokugcwele, futhi i-valve yokuhlola inokumelana nokugeleza okukhulu. I-coefficient yokumelana nokugeleza kwe-valve yesango evamile imayelana no-0.08 ~ 0.12, amandla okuvula nokuvala mancane, futhi okuphakathi kungageleza ngezindlela ezimbili. Ukumelana nokugeleza kwama-valve okumisa ajwayelekile izikhathi ezi-3-5 kunezivalo zesango. Lapho uvula futhi uvala, ukuvala ngempoqo kuyadingeka ukuze kuzuzwe uphawu. I-valve core ye-valve yokumisa ithinta indawo yokuvala kuphela lapho ivalwe ngokuphelele, ngakho ukuguga kwendawo yokuvala kuncane kakhulu. Njengoba amandla okugeleza okuyinhloko makhulu, i-valve yokumisa edinga i-actuator kufanele inake ukulungiswa kwendlela yokulawula i-torque.

Kunezindlela ezimbili zokufaka i-valve yokumisa. 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 ukupakisha kungashintshwa lapho ipayipi phambi kwe-valve ingaphansi kwengcindezi; okungalungile ukuthi i-torque yokushayela ye-valve inkulu, cishe izikhathi ezingu-1 zokugeleza okuvela phezulu, futhi amandla e-axial esiqwini se-valve makhulu, futhi i-valve stem kulula ukugoba. Ngakho-ke, le ndlela ngokuvamile ifaneleka kuphela kuma-valve okumisa ama-diameter amancane (ngezansi kwe-DN50), futhi ama-valve amisa ngaphezu kwe-DN200 asebenzisa indlela ye-medium egeleza ivela phezulu. (Ama-valve okumisa ugesi ngokuvamile asebenzisa indlela yokungena okuphakathi ukusuka phezulu.) Ububi bendlela yokungena okuphakathi ukusuka phezulu kuphambene ncamashi nendlela yokungena kusuka phansi.