Ingcindezi ejwayelekile yaseMelika kanye nesingeniso sokuguqulwa kwengcindezi ejwayelekile kazwelonke

Sivame ukusebenzisa i-Pn, i-CLass, iyindlela yengcindezi, umehluko ukuthi bamele ingcindezi ngaphansi kwesithenjwa sokushisa esihambisanayo sehlukile, i-Pn European system ibhekisa kwingcindezi ehambisanayo engu-120 ℃, kanti indinganiso yaseMelika ibhekisa kwingcindezi ehambelana nayo ngo-425.5 ℃. Ngakho-ke, ekushintshanisweni kobunjiniyela akukwazi nje kuphela ukuguqulwa kwengcindezi, njenge-CLass300 # ngokumane nje nokuguqulwa kwengcindezi kufanele kube yi-2.1 Mpa, kepha uma ubheka ukusetshenziswa kwezinga lokushisa, ingcindezi yalo ehambisanayo izokhuphuka, ngokusho kwengcindezi yokushisa kwempahla test ilingana no-5.0 Mpa.

Kunezinhlobo ezimbili ze-valve system: eyodwa yiJalimane (kufaka phakathi neChina) njengommeleli wezinga lokushisa elijwayelekile (i-China ingu-100 degrees, i-Germany ingama-degree ayi-120) ingcindezi yokusebenza evumelekile njengokuma kohlelo "lwegama lokucindezela". Enye yazo “uhlelo lokucindezela izinga lokushisa” olumelwe yi-United States, olususelwa kwingcindezi yokusebenza evumelekile emazingeni athile okushisa. Kuhlelo lokucindezela izinga lokushisa e-United States, wonke amazinga asuselwa kuma-454 degrees ngaphandle kwe-150LB ngokususelwa kuma-260 degrees. I-150 lb (150psi = 1MPa) ye-Class 25 carbon steel valve inengcindezi evumelekile ye-1MPa kuma-degree angama-260, kepha ingcindezi evumelekile ekamelweni lokushisa likhulu kakhulu kunalokho, cishe i-2.0MPa.

Ngakho-ke, kuthiwa ngokuvamile izinga lokucindezela eliqokiwe elihambisana ne-American Standard 150LB lingu-2.0MPa, izinga lokucindezela okulingana elihambisana ne-300LB lingu-5.0MPa, njalonjalo. Ngakho-ke, ibanga lokucindezelwa kanye nokushisa kwengcindezi lokushisa akunakuguqulwa ngokuya ngefomula lokuguqula ingcindezi. I-Pn ukumelwa kwamanani wekhodi ehlobene nengcindezi, ukuhlinzeka ngenombolo elula eyisiyingi ukuze ibhekiswe kuyo, i-Pn icishe ilingane nenombolo yokushisa yengcindezi ejwayelekile ye-Mpa, imvamisa isetshenziswa ekucindezelweni okuncane kwama-valve asekhaya.

Okwe-valve yokulawula yomzimba we-carbon steel valve, kubhekiswa kungcindezi yokusebenza evumelekile enkulu lapho isetshenziswa ngaphansi kuka-200 ℃; Okomzimba wensimbi okhonjiwe, ingcindezi yokusebenza evumelekile ephezulu yesevisi engaphansi kwe-120 ° C; Kuma-valve wokulawula anemizimba yensimbi engagqwali, ingcindezi yokusebenza evunyelwe ephezulu yensizakalo engaphansi kuka-250 ° C. Lapho izinga lokushisa lokusebenza lenyuka, ukumelana kwengcindezi komzimba we-valve kuzoncipha. Ama-valve ajwayelekile aseMelika aveza ingcindezi yokuqokwa esigabeni sephawundi, okuyisibalo sokushisa okubophayo nokucindezela kwensimbi ngokusho kwe-ANSIB16.34. Isizathu esikhulu esenza ukuthi ibanga lepondo kanye nengcindezi yokuqokwa kungabi yincwadi eyodwa kuya kweyodwa ukuthi ibanga lesisindo kanye nengcindezi yokuqamba ine-datum yokushisa ehlukile.

Imvamisa sisebenzisa isoftware ukubala, kepha kubalulekile ukwazi ukuthi siwasebenzisa kanjani amatafula ukubheka amamaki esisindo. EJapan, inani eliyinhloko le-K lisetshenziselwa ukukhombisa izinga lengcindezi. Ekucindezelweni kwegesi, eChina, ngokuvamile sisebenzisa i-mass unit “kg” (kune- “jin”), iyunithi kg. Iyunithi yengcindezi ingamakhilogremu isentimitha 2, kanti ikhilogremu elilodwa lengcindezi ikhilogremu elilodwa lamandla elisebenza kusentimitha elilodwa lesikwele. Ngokufanayo, okuhambelana nokwangaphandle, kwengcindezi yegesi, ingcindezi esetshenziswa kakhulu yi- “psi”, iyunithi i- “1pound / inch2 ″,“ Amaphawundi ngesentimitha-skwele ngasinye ”, igama eliphelele lesiNgisi yiPounds ngesentimitha-skwele.

Kepha kuvame ukubizwa ngokuthi yiyunithi yesisindo, noma i-LB., empeleni eyi-LB. Yilawo maphawundi amandla. Onke amayunithi abe ngamayunithi we-metric angasetshenzelwa: 1psi = 1 phawundi / Inch2 -0.068bar, 1bar≈14.5psi≈0.1MPa, i-Europe kanye ne-United States nakwamanye amazwe abesebenzisa i-psi njengeyunithi. Ku-Class600 no-Class1500 ohambelana nezinga lase-Europe kanye ne-United States banezimiso ezimbili ezihlukile, i-11MPa (ehambelana nesigaba samakhilogremu angama-600) yizinhlinzeko zohlelo lwaseYurophu, lokhu ku- "ISO7005-1-1992 Steel Flanges" ngaphakathi izinhlinzeko; I-10MPa (ehambelana nesigaba esingamakhilogremu angama-600) umthethonqubo waseMelika, ochazwe ku-ASMEB16.5. Ngakho-ke, akunakushiwo ngokuphelele ukuthi isigaba esihambelanayo samakhilogremu angama-600 ngu-11MPa noma i-10MPa, futhi nezinhlinzeko zezinhlelo ezahlukahlukene zihlukile.

Uhlelo lwe-Valve ikakhulukazi lunezinhlobo ezi-2: eyodwa yiJalimane (kufaka phakathi neChina) njengommeleli wezinga lokushisa elijwayelekile (i-China ingu-100 degrees, i-Germany ingama-degree ayi-120) ingcindezi yokusebenza evumelekile njengesilinganiso sohlelo "lwengcindezi yokuzibiza". Olunye uhlelo "lokushisa kwengcindezi" olumelwe yi-United States, olususelwa ekucindezelweni okuvumelekile kokusebenza emazingeni athile okushisa. E-United States, uhlelo lokushisa kwengcindezi lususelwa kuma-454 degrees ngaphandle kwe-150LB ngokususelwa kuma-260 degrees.

Isibonelo, i-150LB. # 25 i-carbon steel valve inengcindezi evumelekile ye-1MPa kuma-degree angama-260, kanti ingcindezi evumelekile ekamelweni lokushisa likhulu kakhulu kunalokho, cishe i-2.0MPa. Ngakho-ke, kuthiwa ngokuvamile izinga lokucindezela eliqokiwe elihambisana ne-American Standard 150LB lingu-2.0MPa, izinga lokucindezela okulingana elihambisana ne-300LB lingu-5.0MPa, njalonjalo. Ngakho-ke, ibanga lokucindezela kanye nokushisa kwengcindezi lokushisa akunakuguqulwa ngokuya ngefomula lokuguqula ingcindezi.


Isikhathi sokuthumela: Mar-24-2021