Kusiyanitsa mwachangu chitoliro Φ, DN, ndi mainchesi

Pakupanga ndi kugula mapaipi, zolumikizira mapaipi ndi ma valve, Φ, DN ndi mainchesi (“) ndi mayunitsi atatu osavuta kusokoneza. Kusiyana kwawo kwakukulu ndikuti: Φ imayimira dayamita yeniyeni yakunja, DN ndi code yofotokozera mu metric system, ndipo mainchesi ndi code yofotokozera mu dongosolo lachifumu. Kenako, kusiyana kwatsatanetsatane ndi kulumikizana pakati pa atatuwa kwafotokozedwa:

1. Kusiyana kwa matanthauzo apakati

Φ (m'mimba mwake):Φ ndi chilembo cha Chigiriki chomwe mu uinjiniya chimayimira dayamita yeniyeni yeniyeni (nthawi zambiri dayamita yakunja). Ndi chizindikiritso chodziwika bwino kwambiri ndipo sichifuna kusinthidwa. Mwachitsanzo, Φ114.3 imatanthauza kuti dayamita yeniyeni yakunja ya chitoliro ndi 114.3mm.

DN (Mulifupi mwa Dzina):DN (Nominal Diameter) ndi mainchesi odziwika bwino mu dongosolo la metric. Si mainchesi amkati kapena mainchesi akunja, koma "kukula kwa mainchesi" komwe kumapangidwa mwaluso kuti kulumikiza kukhale kosavuta (pafupifupi avareji ya mainchesi amkati ndi mainchesi akunja). Mwachitsanzo, DN100 ndi code yongofotokozera ndipo mainchesi ake enieni akunja akhoza kukhala 114.3mm kapena 108mm.

Inchi (“):Inchi ndi gawo la kutalika mu dongosolo lachifumu (inchi imodzi = 25.4mm). Mu mapaipi, imayimiranso m'mimba mwake wodziwika. Mwachitsanzo, 4″ imayimira chitoliro cha mainchesi 4, ndipo m'mimba mwake weniweni wakunja umakhazikika pa 114.3mm.

2. Kumveka bwino komanso kudziwika bwino

Φ Chomveka bwino kwambiri:M'mimba mwake weniweni wakunja walembedwa mwachindunji, zomwe mukuwona ndi zomwe mumapeza, palibe kusamveka bwino.

Mainchesi ndi enieni kwambiri:Mu mapaipi aku Britain (Chitoliro), m'mimba mwake wakunja wofanana ndi mainchesi ndi wapadera. Mwachitsanzo, 4″ ndi Φ114.3, 10″ ndi Φ273, palibe chitsimikizo china chofunikira.

Pali kusamveka bwino mu DN:Mtengo womwewo wa DN ungafanane ndi mndandanda wa mainchesi awiri akunja osiyana m'machitidwe apaipi apakhomo. Mwachitsanzo DN100:

- Mndandanda wa I (Mndandanda/wapadziko lonse):m'mimba mwake wakunja ndi Φ114.3mm

- Mndandanda wa II (Mndandanda wa B/ntchito zapakhomo):m'mimba mwake wakunja ndi Φ108mm

Chifukwa chake, pogula kapena kujambula, ngati mulemba DN100 yokha, muyeneranso kusonyeza ngati ndi mndandanda wa I kapena II, apo ayi n'zosavuta kugula chinthu cholakwika.

3. Ubale wolumikizana ndi kusintha pakati pa atatuwa

Zitatuzi sizingasinthidwe mwa kuchulukitsa ndi kugawa masamu mosavuta (mwachitsanzo, simungagwiritse ntchito mwachindunji DN100 / 25.4 kuti muwerenge mainchesi), koma muyenera kudalira matebulo oyerekeza a mafakitale.

4. Zochitika zomwe zingagwiritsidwe ntchito komanso mafotokozedwe a zilembo

DN:Amagwiritsidwa ntchito kwambiri m'mapaipi achitsulo oyendera madzi ndi gasi (okhala ndi magalasi kapena osakhala ndi magalasi), mapaipi achitsulo chopangidwa ndi chitsulo, mapaipi apulasitiki, ndi zina zotero.

Φ:Amagwiritsidwa ntchito kwambiri m'mapaipi achitsulo chosasunthika, mapaipi achitsulo chosapanga dzimbiri, mapaipi achitsulo chosapanga dzimbiri, ndi zina zotero. Polemba, nthawi zambiri amagwiritsidwa ntchito limodzi ndi makulidwe a khoma, monga Φ108×4 (kutanthauza m'mimba mwake wakunja 108mm, makulidwe a khoma 4mm).

Inchi:Amagwiritsidwa ntchito kwambiri m'mapaipi ndi ma valve fittings m'machitidwe aku America ndi ku Europe, komanso m'mafakitale akale monga mafuta ndi gasi wachilengedwe.

5. Chidule

Φ:Chimayimira m'mimba mwake weniweni wa chitoliro. Kuti musankhe chofananiravalavu ya gulugufe, valavu ya chipatandivalavu yoyezera, ingoyang'anani m'mimba mwake weniweni wa chitoliro mwachindunji.

DN:Ndi metric nominal diameter code yokha. Mukamagula ma valve, onetsetsani kuti mwatsimikizira mndandanda wa A/I ndi B/II kuti mupewe kulephera kulumikiza ma flange.TWSzinthu zofunikamavavu a gulugufe, mavavu a chipata, ma valve owunikirandi zinthu zina. Mukayitanitsa, magawo a mndandanda ayenera kufotokozedwa kuti zitsimikizire kufanana kwa mapaipi.

Inchi (“):M'mimba mwake wa dzina la Britain, womwe umagwiritsidwa ntchito kwambiri pa ma valve ochokera kunja. 25.4 singagwiritsidwe ntchito kungosintha m'mimba mwake wakunja mwachindunji. Iyenera kutsimikiziridwa poyang'ana tebulo lokhazikika.