Incazelo yeUbubanzi obujwayelekile
Ububanzi obujwayelekile, obuvame ukufushaniswa ngokuthi i-DN (kusukela kwelesiJalimane elithi “Durchmesser” okusho ububanzi) ezinhlelweni ze-metric noma i-NPS (Usayizi Wepayipi Elijwayelekile) ezinhlelweni zasebukhosini, buyindlela ejwayelekile yobukhulu bamapayipi nezingxenye ezihlobene. Akuyona indlela eqondile yokulinganisa ububanzi obubonakalayo bepayipi noma ukufakelwa. Kunalokho, kusebenza njengendawo evamile yokubhekisela ukuqinisekisa ukuhambisana phakathi kwezingxenye ezahlukene ngaphakathi kwesistimu yamapayipi.
Isibonelo, epayipini le-DN 50 ohlelweni lwe-metric, ububanzi bangempela bangaphandle bepayipi kungenzeka bungabi ngu-50 mm ncamashi. Ububanzi bangempela bangaphandle bepayipi lensimbi le-DN 50, ngokwezincazelo ezijwayelekile, ngokuvamile bungaba ngu-60.3 mm. Ububanzi obujwayelekile busetshenziselwa ukwenza lula ukuhlonza nokukhetha izingxenye. Zonke izingxenye ezinobubanzi obufanayo, njengamapayipi, ama-flange, nama-valve, zenzelwe ukulingana kahle.
Ukubaluleka Kokuqiniswa
Ukulinganisa ububanzi obujwayelekile kunezinzuzo eziningana. Kuvumela ukushintshaniswa okulula kwezingxenye. Embonini enkulu yezimboni enamapayipi amaningi kanye nokufakwa, ukuba nohlelo olujwayelekile lobubanzi obujwayelekile kuqinisekisa ukuthi izingxenye ezithathelwa indawo zingatholakala futhi zifakwe ngokushesha. Isibonelo, uma ivalvu epayipini le-DN 80 idinga ukushintshwa, noma yiliphi ivalvu enobubanzi obujwayelekile be-DN 80, kungakhathaliseki ukuthi umenzi (uma nje elandela amazinga afanele), kufanele ikwazi ukungena kalula emapayipini akhona.
Ngaphezu kwalokho, kwenza inqubo yokuklama ibe lula. Onjiniyela bangacacisa izingxenye ngokusekelwe kumadayamitha ajwayelekile ngaphandle kokukhathazeka ngomehluko omncane kumadayamitha angempela. Lokhu kusheshisa ukwakheka kwezinhlelo zamapayipi, njengoba zingagxila ekwakhiweni nasekusebenzeni okuphelele kunokuba zigxile emininingwaneni eqondile yobukhulu bengxenye ngayinye.
Umehluko phakathi kwe-Imperial ne-MetricUbubanzi obujwayelekile
Ohlelweni lwe-Imperial, i-NPS isekelwe kuma-intshi. Isibonelo, ipayipi le-NPS elingu-2-intshi linobubanzi bangaphandle obuhlukile uma kuqhathaniswa nepayipi le-DN 50 ohlelweni lwe-metric, yize lilingana kancane ngokwebanga lobukhulu obujwayelekile. Uhlelo lwe-Imperial lunesethi yalo yobukhulu obujwayelekile bamapayipi kanye nokufakwa, futhi ukuguqulwa phakathi kwe-Imperial NPS kanye ne-metric DN akulula ngaso sonke isikhathi. Kodwa-ke, kuye kwenziwa imizamo yokusungula ukulingana okulinganiselwe ukuze kube lula ukuhweba kwamazwe ngamazwe kanye nokubambisana ezimbonini ezisebenzisa zombili izinhlelo.
Ekuphetheni, ububanzi obujwayelekile buwumqondo oyisisekelo emhlabeni wezinhlelo zamapayipi. Buhlinzeka ngendlela ejwayelekile yokuhlonza nokufanisa izingxenye, okuvumela ukuklama, ukufakwa, kanye nokugcinwa kwezinhlelo zokuphatha uketshezi ezisebenza kahle ezimbonini ezahlukahlukene, kusukela ezindaweni zokuhlanza uwoyela negesi kuya kumanethiwekhi okuphakelwa kwamanzi.
Isikhathi sokuthunyelwe: Mashi-17-2025