Kudzvanywa kwemazita (PN), Class American standard pound level (Lb), inzira yekuratidza kudzvanywa, musiyano ndewekuti kudzvanywa kwavanomiririra kunoenderana netembiricha yakasiyana, PN European system inoreva kudzvanywa pa120 ° C Kudzvanywa kwakafanana, nepo CLass American Standard ichitaura kudzvanywa kwakafanana pa425.5 ° C. Saka, mukuchinjisa mainjiniya, hazvigoneke kungoita kuchinjirwa kwekudzvanywa. Semuenzaniso, CLass300 inofanira kunge iri 2.1MPa nekushandura kudzvanywa kuri nyore. Zvisinei, kana tembiricha yekushanda ikafungwa, kudzvanywa kwakafanana kuchawedzera. Zvichienderana netembiricha uye muedzo wekudzivirira kudzvanywa kwezvinhu, chiyero chakaenzana ne5.0MPa.
Kune mhando mbiri dzemavharuvhu: imwe ndiyo "nominal pressure" system inomiririrwa neGermany (kusanganisira China) zvichibva pakushanda kunobvumirwa patembiricha yemumba (100 degrees munyika yangu uye 120 degrees muGermany). Imwe ndiyo "tembiricha nepressure system" inomiririrwa neUnited States, iyo inomiririrwa nekushanda kunobvumirwa patembiricha yakati. Mutembiricha nepressure system yeUnited States, kunze kwe150Lb, iyo yakavakirwa pa260 degrees, mamwe mazinga akavakirwa pa454 degrees. . Kumanikidzwa kunobvumidzwa kwe150-psi class (150psi=1MPa) No. 25 carbon steel valve i1MPa pa260 degrees, uye kumanikidzwa kunobvumidzwa patembiricha yemumba kwakakura kupfuura 1MPa, inenge 2.0MPa. Saka, kazhinji, mwero wekumanikidzwa unoenderana neAmerican Standard 150Lb i2.0MPa, uye mwero wekumanikidzwa unoenderana ne300Lb i5.0MPa, nezvimwewo. Saka, mwero wekumanikidzwa netembiricha nedhigirii rekumanikidzwa hazvigone kushandurwa zvisina tsarukano zvichienderana nefomula yekushandura kumanikidzwa.
PN ikodhi ine chekuita nekumanikidzwa kunomiririrwa nenhamba, uye inhamba yakakwana yakatenderera yekutarisa. PN inhamba yeMPa inodzivirira kumanikidzwa inenge yakaenzana netembiricha yakajairika, inova iyo pressure yezita inowanzo shandiswa neMavharuvhu echiChineseYemavharuvhu ekudzora anevharuvhu yesimbi yekabhoniMiviri, zvinoreva kumanikidzwa kwepamusoro kunobvumirwa kushanda kana kuchishandiswa pasi pe200°C; kune miviri yevharuvhu yesimbi yakakandwa, zvinoreva kumanikidzwa kwepamusoro kunobvumirwa kushanda kana kuchishandiswa pasi pe120°C; Kumanikidzwa kwepamusoro kunobvumirwa kushanda pakushandiswa pasi pe250°C. Kana tembiricha yekushanda yakwira, kuramba kwekumanikidzwa kwemuviri wevharuvhu kunoderera. Vharuvhu yeAmerican standard inoratidza kumanikidzwa kwepamusoro mumapaundi, inova mhedzisiro yekuverengera kwekushisa kwakabatana nekumanikidzwa kwesimbi yakati, iyo inoverengerwa zvichienderana nechiyero cheANSI B16.34. Chikonzero chikuru nei kirasi yepaundi nekumanikidzwa kwepamusoro zvisiri kutaurirana kwemunhu mumwe chete ndechekuti tembiricha yepasi pekirasi yepaundi nekumanikidzwa kwepamusoro zvakasiyana. Tinowanzo shandisa software kuverenga, asi tinodawo kuziva mashandisiro ematafura kutarisa zviyero. Japan inonyanya kushandisa K value kuratidza mwero wekumanikidzwa. Kune kumanikidzwa kwegasi, muChina, tinowanzo shandisa unit yayo yehuremu "kg" kutsanangura (pane "jin"), uye unit yacho i kg. Chikamu chekumanikidza chinoenderana nacho chinonzi "kg/cm2", uye kilogiramu imwe yekumanikidzwa zvinoreva kuti kilogiramu imwe chete yesimba inoshanda pasendimita imwe chete. Saizvozvowo, zvichienderana nenyika dzekunze, kune kumanikidzwa kwegasi, chikamu chekumanikidza chinowanzo shandiswa ndi "psi", uye chikamu chacho ndi "1 pound/inch2", zvinoreva "mapaundi pasendimita imwe neimwe". Zita rakazara rechiRungu ndiPounds pasendimita imwe neimwe. Asi chinowanzo shandiswa kudana zvakananga chiyero chayo chehukuru, kureva pound (Lb.), iyo iri chaizvo Lb. Ndiyo pound-force yambotaurwa. Inogona kuverengerwa nekushandura mayuniti ese kuita mayuniti emetric: 1 psi=1 pound/inch2 ≈0.068bar, 1 bar≈14.5psi≈0.1MPa, nyika dzakadai seEurope neUnited States dzinoshandiswa kushandisa psi sechikamu. MuClass600 neClass1500, kune mavalues maviri akasiyana anoenderana neEuropean standard neAmerican standard. 11MPa (inoenderana nekirasi yemapaunzi 600) ndiyo mutemo weEuropean system, uyo wakatsanangurwa mu "ISO 7005-1-1992 Steel Flanges"; 10MPa (inoenderana nekirasi yemapaunzi 600) ndiyo mutemo weAmerican system, unova mutemo muASME B16.5. Saka, hazvigone kutaurwa zvachose kuti kirasi yemapaunzi 600 inoenderana ne11MPa kana 10MPa, uye mitemo yemasisitimu akasiyana yakasiyana.
Kune mhando mbiri dzemavharuvhu: imwe ndiyo "nominal pressure" system inomiririrwa neGermany (kusanganisira nyika yangu) zvichibva pakushanda kunobvumirwa patembiricha yemumba (100 degrees munyika yangu uye 120 degrees muGermany). Imwe ndiyo "tembiricha nepressure" system inomiririrwa neUnited States, iyo inomiririrwa nekushanda kunobvumirwa patembiricha yakati. Mutembiricha nepressure system yeUnited States, kunze kwe150Lb, iyo yakavakirwa pa260 degrees, mamwe mazinga akavakirwa pa454 degrees. Semuenzaniso, kumanikidzwa kunobvumidzwa kwe150Lb. 25 carbon steel valve i1MPa pa260 degrees, uye kumanikidzwa kunobvumidzwa patembiricha yemumba kwakakura kupfuura 1MPa, inova inenge 2.0MPa. Saka, kazhinji, mwero wekumanikidzwa unoenderana neAmerican Standard 150Lb i2.0MPa, uye mwero wekumanikidzwa unoenderana ne300Lb i5.0MPa, nezvimwewo. Saka, mwero wekumanikidzwa netembiricha nedhigirii rekumanikidzwa hazvigone kushandurwa zvisina tsarukano zvichienderana nefomula yekushandura kumanikidzwa.
Sezvo tembiricha yesimba repamusoro uye chiyero chekumanikidzwa zvakasiyana, hapana hukama hwakasimba pakati pezviviri izvi. Kubatana kwakaoma pakati pezviviri izvi kunoratidzwa mutafura.
Nguva yekutumira: Nyamavhuvhu-31-2023