Idayamitha yevalvu Φ, i-diameter DN, intshi” Ungakwazi yini ukuhlukanisa lezi zingxenye zokucaciswa?

Ngokuvamile kuba khona abangani abangaqondi ubudlelwano phakathi kokucaciswa kwe- “DN”, “Φ” kanye “”.” Namuhla, ngizofingqa ubudlelwano phakathi kwakho kobathathu, ngethemba lokukusiza!

yini intshi"

I-Inch (“) iyunithi yokucacisa evame ukusetshenziswa ohlelweni lwaseMelika, njengamapayipi ensimbi,ama-valve, ama-flange, izindololwane, amaphampu, ama-tee, njll., njengokucaciswa ngu-10″.

Intshi (intshi, esifushanisiwe ngokuthi in.) isho isithupha ngesi-Dutch, futhi iyintshi ubude besithupha. Yebo, ubude besithupha buhlukile. Ngekhulu le-14, iNkosi u-Edward II yamemezela i-"Standard Legal Inch". Umgomo uwukuthi ubude bezinhlamvu ezintathu ezinkulu kakhulu ezikhethwe phakathi kwezikhwebu zebhali futhi zihlelwe ngokulandelana ziyi-intshi eyodwa.

Ngokuvamile 1″=2.54cm=25.4mm

Yini i-DN

I-DN iyiyunithi yokucacisa evame ukusetshenziswa ezinhlelweni zaseChina nezaseYurophu, futhi iyisicaciso sokumaka amapayipi,ama-valve, ama-flanges, okokufakwayo, namaphampu, njengeI-DN250.

I-DN ibhekisela kububanzi obuncane bepayipi (okwaziwa nangokuthi i-diameter yegama), qaphela: lokhu akuwona ububanzi bangaphandle noma ububanzi obungaphakathi, kodwa isilinganiso sobubanzi obungaphandle nobubanzi obungaphakathi, okubizwa ngokuthi i-diameter yangaphakathi emaphakathi.

YiniΦ

Φ iyunithi evamile, ebhekisela kububanzi obungaphandle bamapayipi, noma izindololwane, insimbi eyindilinga nezinye izinto.

Pho ikuphi ukuxhumana phakathi kwabo?

Okokuqala, izincazelo ezimakwe ngokuthi “”” kanye “no-DN” zicishe zifane. Ngokuyisisekelo zisho ububanzi obuncane, okubonisa ubukhulu balokhu kucaciswa, futhiΦ iyinhlanganisela yakho kokubili.

Ngokwesibonelo

Isibonelo, uma ipayipi lensimbi lingu-DN600, uma ipayipi lensimbi elifanayo limakwe ngamayintshi, liba ngu-24″. Ingabe kukhona ukuxhumana phakathi kwalokhu okubili?

Impendulo ithi yebo! I-intshi evamile iyinani eliphelele futhi iphindwe ngokuqondile ngo-25 ilingana ne-DN, njengokuthi 1″*25=DN25, 2″*25=50, 4″*25=DN100, njll. Yebo, kukhona abahlukene njengokuthi 3″ *25=75 Ukuzungezisa yi-DN80, futhi kukhona ama-intshi athile anamasemikholoni noma amaphoyinti edesimali afana no-1/2″, 3/4″, 1-1/4″, 1-1/2″, 2-1/2″ , 3-1/ 2″ njalo njalo, lezi azikwazi ukubalwa kanjalo, kodwa izibalo zicishe zifane, ngokuyisisekelo inani elishiwo:

1/2″=DN15

3/4″=DN20

1-1/4″=DN32

1-1/2″=DN40

2″=DN50

2-1/2″=DN65

3″=DN80