Kodi “inchi” n’chiyani: Inchi (“) ndi chipangizo chodziwika bwino cha makina aku America, monga mapaipi achitsulo, ma valve, ma flange, zigongono, mapampu, ma tee, ndi zina zotero, monga momwe chimafotokozera ndi 10″.
Inchies (inchi, chidule chake ngati mkati.) chimatanthauza chala chachikulu mu Chidatchi, ndipo inchi imodzi ndi kutalika kwa chala chachikulu. Inde, kutalika kwa chala chachikulu cha munthu nakonso n'kosiyana. M'zaka za m'ma 1300, Mfumu Edward Wachiwiri inatulutsa "chinthu chovomerezeka mwalamulo".
Kwanenedwa kuti kutalika kwa tinthu titatu tating'onoting'ono tomwe tasankhidwa pakati pa chitsa cha barele ndikukonzedwa motsatizana ndi inchi imodzi.
Kawirikawiri 1″=2.54cm=25.4mm
Kodi DN ndi chiyani: DN ndi chipangizo chodziwika bwino chomwe chimagwiritsidwa ntchito kwambiri m'makina aku China ndi ku Europe. Ndi chida chodziwiranso mapaipi, ma valve, ma flange, zolumikizira mapaipi ndi mapampu, monga DN250.
DN imatanthauza m'mimba mwake mwa chitoliro (chomwe chimadziwikanso kuti m'mimba mwake mwa dzina), dziwani: ichi si m'mimba mwake wakunja kapena m'mimba mwake wamkati, ndi avareji ya m'mimba mwake wakunja ndi m'mimba mwake wamkati, wotchedwa m'mimba mwake wapakati.
Kodi Φ ndi chiyani: Φ ndi gawo lathunthu, lomwe limatanthauza m'mimba mwake wakunja kwa mapaipi, zigongono, chitsulo chozungulira ndi zinthu zina. Linganenedwenso kuti ndi m'mimba mwake. Mwachitsanzo, Φ609.6mm imatanthauza m'mimba mwake wakunja wa 609.6mm.
Tsopano popeza tapeza zomwe magawo atatuwa akuyimira, kodi pali mgwirizano wotani pakati pawo?
Choyamba, "Tanthauzo la "DN" ndi lofanana ndi la DN, kwenikweni limatanthauza m'mimba mwake, kusonyeza kukula kwa mfundo iyi, ndipo Φ ndi kuphatikiza ziwirizi.
Mwachitsanzo: ngati chitoliro chachitsulo ndi DN600, ndipo chitoliro chomwecho chachitsulo chalembedwa ndi mainchesi, chimakhala mainchesi 24. Kodi pali kugwirizana kulikonse pakati pa ziwirizi?
Yankho ndi inde! Inchi yonse ndi kuchulukitsa mwachindunji kwa nambala yonse ndi 25, yomwe ndi yofanana ndi DN, monga 1″*25=DN25 2″*25=50 4″*25=DN100 ndi zina zotero.
Zachidziwikire, palinso zosiyana, monga 3″*25=75, zozungulira ku DN80 yapafupi, ndi mainchesi ena okhala ndi ma semicolon kapena ma decimal point, monga 1/2″ 3/4″ 1-1/4″ 1-1/2″ 2-1 /2″ 3-1/2″, ndi zina zotero, izi sizingawerengedwe motere, koma kuwerengera kuli kofanana, makamaka mtengo wotchulidwa:
1/2″=DN15 3/4″=DN20 1-1/4″=DN32 1-1/2″=DN40 2-1/2″=DN65 3-1/2″=DN90
Nthawi yotumizira: Mar-10-2022
