Mawonedwe: 837 Wolemba: Site Editor Nthawi Yosindikiza: 2023-12-18 Koyambira: Tsamba
Kodi mukuvutika chifukwa chosamvetsetsa ulusi wa NPSM, NPTF, NPT, ndi BSPT? Nkhaniyi ikutsogolerani pakumvetsetsa mwatsatanetsatane ulusiwu, ndikuphunzitsani momwe mungayikitsire pamodzi ndi zofunikira.
NPT imayimira National Pipe Tapered . Ndi mtundu wa ulusi wopendekera womwe umagwiritsidwa ntchito kulumikiza mapaipi ndi zolumikizira. Nazi zomwe muyenera kudziwa:
l Ulusi Wojambulidwa : Ulusi wa NPT umakwera pamlingo wa 1/16 inchi pa inchi, zomwe zikutanthauza kuti zimachepera mpaka kumapeto.
l Miyezo ya Ulusi : Amatsatira muyezo wa ANSI/ASME B1.20.1 .
l Ngongole ya Ulusi : Ulusiwo uli ndi mbali ya 60 °.
l Kusindikiza Mwachangu : Amapanga chisindikizo chomakina polumikizana . pakati pa ulusi ndi mizu .
Ulusi wa NPT uli paliponse pamakina okakamiza . Amagwiritsidwa ntchito kuti atsimikizire kuti palibe chisindikizo chopanda kutayikira mu:
l Kutumiza kwa Madzi ndi Gasi : Mipope yomwe imanyamula madzi, mafuta, kapena gasi.
l Pressure Calibration Systems : Zida zomwe zimayesa kupanikizika.
Makampani omwe amagwiritsa ntchito ulusi wa NPT akuphatikizapo:
l Kupanga
l Zagalimoto
l Zamlengalenga
Mukayika ulusi wa NPT, tsatirani izi:
1. Gwiritsani ntchito Tepi ya PTFE : Manga tepi ya PTFE (Teflon) kuzungulira ulusi wachimuna kuti muwongolere chisindikizo.
2. Osalimbitsa Mochulukira : Kumangitsa kwambiri kumatha kuyambitsa ndulu , pomwe ulusi umawonongeka.
3. Yang'anani Kutayikira : Yesani nthawi zonse kulumikizidwa kuti muwone kutayikira.
Zomwe zimagwiritsidwa ntchito nthawi zambiri zimaphatikizapo:
l Kulumikiza mapaipi : Monga mapaipi a nyumba yanu.
l Zopangira : Monga zigongono kapena ma tee omwe amathandizira kusintha komwe kumayendera.
l Kulumikizana Kwaulere : Amapangidwa kuti apange chisindikizo cholimba.
l Chovomerezeka Kwambiri : NPT ndiye muyezo m'mafakitale ambiri.
l Kuopsa Kwambiri Kulimbitsa : Ndizotheka kuwononga ulusi.
l Itha Kufuna Sealant : Nthawi zina, chosindikizira chowonjezera chimafunika kuti chisindikizocho chisatayike.
l NPTF , kapena Mafuta a National Pipe Taper , omwe amadziwikanso kuti Dryseal American National Standard Taper Pipe Thread , apangidwa kuti apereke chisindikizo cholimba popanda kufunikira kowonjezera.
l Ulusi wa NPTF uli ndi mapangidwe osiyana pang'ono omwe amalola kugwirizanitsa makina popanda kugwiritsa ntchito tepi ya PTFE kapena zosindikizira zina, mosiyana ndi ulusi wa NPT umene umafuna nthawi zambiri.
Kumbukirani, NPT ikufuna kupanga chingwe cholumikizira chitoliro chomwe chili chodalirika komanso chogwiritsidwa ntchito kwambiri. Kaya mukugwira ntchito yokonza galimoto kapena mukukonza kudontha kwanu kunyumba, kudziwa za ulusi wa NPT kumakuthandizani kupanga maulumikizidwe abwinoko.
Ulusi wa NPTF, womwe umatchedwanso Dryseal American National Standard Taper Pipe Thread , tsatirani miyezo ya ANSI B1.20.3 . Ulusi uwu ndi wofanana ndi NPT koma udapangidwa kuti usindikize bwino. Ulusi wa NPTF umakhala ndi ngodya ya 60 ° m'mbali ndipo umapanga chosindikizira chomakina kudzera muzosokoneza pakati pa ulusi ndi mizu. Izi zikutanthauza kuti ulusiwo umaphwanyidwa pamodzi kuti ukhale womatira popanda kufunikira zosindikizira zina.
Ngakhale ulusi wa NPT ndi NPTF umawoneka mofanana, mapangidwe ake ndi osiyana . Ulusi wa NPT adapangidwa pansi pa ANSI/ASME B1.20.1 , ndipo angafunike tepi ya PTFE kapena zosindikizira zina kuti zitsimikizire kuti palibe kutayikira . Kumbali ina, ulusi wa NPTF, wotsatira ANSI B1.20.3 , umapangidwa kuti ukhale wolimba kwambiri ndikupanga chisindikizo popanda zipangizo zowonjezera. Amakwaniritsa izi ndi mapangidwe omwe amalola kuti ulusi ulusi ndi mizu zigwirizane, ndikupanga chisindikizo chopanda kutayikira..
M'dziko lamafuta ndi gasi , ulusi wa NPTF ndiwosankha. Amapangidwa kuti apange chisindikizo chopanda kutayikira chomwe chili chofunikira kwambiri pamakina okakamiza . Makinawa sangakwanitse kutayikira, chifukwa ngakhale yaing'ono ikhoza kukhala yowopsa. Ulusi wa NPTF umagwiritsidwa ntchito pamakina owongolera kuthamanga ndi magawo omwe kusunga chiyero ndi kukhulupirika kwamadzimadzi kapena gasi ndikofunikira.
Ulusi wa NPTF nthawi zambiri umapezeka m'mapulogalamu omwe chisindikizo chopanda kutayikira chimakhala chofunikira, ndipo palibe chosindikizira chomwe chimafunidwa. Komabe, ngakhale ulusi wa NPTF ndi NPT nthawi zina ungasakanizidwe, izi sizowopsa nthawi zonse. Ulusi wa NPTF ukhoza kukulungidwa muzoyika za NPT, koma zobwererazo sizingasindikize bwino chifukwa NPTF idapangidwa kuti ifanane kwambiri. Ndikofunikira kuyang'ana ngati zikugwirizana musanazisakaniza kuti mupewe zovuta monga kulira kapena kusindikiza molakwika.
Ulusi wa NPSM ndi mtundu wa ulusi wa chitoliro chowongoka . Amatsatira miyezo ya ANSI/ASME B1.20.1 . Ulusiwu umapangidwa kuti ugwirizane ndi makina osati kupanga chisindikizo. Amakhala ndi mbali ya 60 ° ndipo amayenera kugwiritsidwa ntchito ndi gasket kapena O-ring kuti apange kulumikizana kopanda kutayikira..
Mfundo zazikuluzikulu za ulusi wa NPSM: - Iwo ali ofanana , kutanthauza kuti m'mimba mwake ndi wosasinthasintha. - Ulusi wa NPSM sukhala ngati ulusi wa NPT (National Pipe Tapered). - Amagwiritsidwa ntchito popanga kulumikizana ndi makina . - Kusindikiza bwino kumachokera ku ma gaskets, osati ulusi womwewo.
Ulusi wa NPSM nthawi zambiri umapezeka m'ma hydraulic system komwe kusindikiza kopanda kutayikira ndikofunikira. Amagwira ntchito bwino pamakina okakamiza ngati makina owongolera kuthamanga . Zopangira za Female Pipe Swivel ndizofala ndi ulusi wa NPSM, kulola kuyika kosavuta m'malo olimba.
Njira zogwiritsiridwa ntchito bwino ndi izi: - Kumene chisindikizo cha makina ndichofunika kwambiri kuposa chosindikizira cha ulusi. -Systems amafuna disassembly pafupipafupi ndi ressembled. - Mukamagwiritsa ntchito gasket kapena O-ring imakonda kuposa chosindikizira ulusi.
NPSM nthawi zina imatha kusokonezedwa ndi NPTF (National Pipe Taper Fuel), yomwe imadziwikanso kuti Dryseal American National Standard Taper Pipe Thread . Umu ndi momwe amafananizira:
l Ulusi wa NPTF adapangidwa kuti azipereka chisindikizo chopanda kutayikira popanda kufunikira kwa zosindikizira zowonjezera. Amapanga kusokoneza koyenera pakati pa ulusi wa ulusi ndi mizu ya ulusi.
l Zingwe za NPSM zimafuna gasket kapena O-ring kuti zitsimikizire kulumikizidwa kopanda kutayikira.
l NPSM sisinthana ndi NPTF kapena NPT chifukwa cha ulusi wosiyanasiyana.
Ulusi wa NPSM ndi wamtengo wapatali chifukwa cha kusindikiza kwawo kogwira mtima akagwiritsidwa ntchito ndi chisindikizo choyenera . Amagwiritsidwa ntchito kwambiri mu: - Ntchito zamadzimadzi ndi gasi . - Makampani omwe amafunikira kulumikizana ndi makina odalirika.
Ntchito zamafakitale ndi izi: - Kuyeretsa madzi ndi madzi oyipa. - Pneumatic systems. - Makina opaka mafuta.
Tikamalankhula za ulusi wa BSPT , tikudumphira m'dziko la mapaipi ndi maulumikizidwe omwe ndi ofunikira pakusamutsa madzi ndi gasi . BSPT imayimira British Standard Pipe Taper . Ndi mtundu wa ulusi wopindika womwe umagwiritsidwa ntchito popanga chisindikizo chosadukiza . Mulingo uwu wafotokozedwa m'malemba ngati BS 21 ndi ISO 7.
Ulusi wa BSPT ndi wapadera. Amakhala ndi mbali ya 60 ° ndipo amapendekera, zomwe zikutanthauza kuti amacheperako akamazama. Izi ndizosiyana ndi ulusi wa NPT , womwe umapangidwanso koma uli ndi ngodya ya 60 ° yomwe imagwiritsidwa ntchito ku America, monga momwe ANSI/ASME B1.20.1 imafotokozera..
Tsopano, tiyeni tifanizire BSPT ndi NPTF . NPTF, kapena Fuel National Pipe Taper Fuel , yomwe nthawi zambiri imatchedwa Dryseal American National Standard Taper Pipe Thread , malinga ndi ANSI B1.20.3 , yapangidwa kuti ikhale yolimba kwambiri kuposa NPT. Imakwaniritsa izi popanga kusokoneza koyenera pakati pa ulusi wa ulusi ndi mizu ya ulusi . BSPT sidalira kukwanira uku kuti asindikize. M'malo mwake, ingafunike chosindikizira cha ulusi ngati tepi ya PTFE (Teflon) kapena gasket kuti isatayike.
Ulusi wa BSPT umagwiritsidwa ntchito kwambiri kunja kwa United States, makamaka m'maiko omwe amatsatira miyezo yaukadaulo yaku Britain. Nthawi zambiri amawoneka m'makina okakamiza komanso makina owongolera kuthamanga . Kukhoza kwawo kupanga chisindikizo cha makina kumawapangitsa kukhala oyenera ntchito zambiri zapadziko lonse lapansi.
Tikayang'ana pa BSPT pamodzi ndi mitundu ina ya ulusi monga NPSM (National Pipe Straight Mechanical) ndi BSPP (British Standard Parallel Pipe) , tikuwona kuti BSPT ndiyopanga kulumikiza kopanda kutayikira mu ulusi wa tapered, pamene NPSM ndi BSPP ndi za ulusi wa chitoliro chowongoka . Ulusi wa BSPT umapanga kulumikizana kwamakina osafunikira mphete yomangika kapena O-ring , mosiyana ndi BSPP yomwe ingafunike izi kuti isindikize.
Ulusi wa BSPT ndiwabwino pakanthawi komwe mukufuna chisindikizo cholimba, chopanda kutayikira popanda zovuta za njira zina zosindikizira. Ndiosavuta kugwiritsa ntchito kuposa ulusi wa NPTF , womwe umafunika kuwongolera bwino kuti mupewe zovuta monga kuphulika kapena kuwonongeka chifukwa cholimba kwambiri.
Tikamalankhula za zolumikizira ulusi monga NPSM, NPTF, NPT, ndi BSPT, zonse zimatengera momwe amalumikizirana ndikusindikiza mapaipi. iyi ya ulusi Miyezo imatithandiza kuonetsetsa kuti zinthu zikugwirizana bwino. Ganizirani izi ngati midadada ya LEGO - iyenera kugwirizana bwino kuti ikhale limodzi.
l NPSM ndi NPS zili ndi ulusi wowongoka, zomwe zikutanthauza kuti sizimalimba pamene zikulowa.
l NPT , NPTF , ndi BSPT ndizojambula. Izi zikutanthauza kuti zimakhala zolimba, zokhala ngati fanjelo, zomwe zimathandiza kuyimitsa kutayikira.
American National Standards Institute (ANSI) imakhazikitsa malamulo a ulusiwu ku US Mwachitsanzo, ANSI/ASME B1.20.1 ndi ya ulusi wa NPT. Amatiuza kukula kwa ulusi, kuchuluka kwa inchi (ndiko kuwerengera kwa ulusi), ndi mawonekedwe omwe ayenera kukhala nawo.
Zipangizo ndi zofunika kwambiri. Zovala zambiri ndi zitsulo, monga chitsulo kapena mkuwa, chifukwa ndizolimba. Kupanga zigawozi kumatsatira malamulo okhwima kuti zitsimikizire kuti zili zotetezeka komanso zizikhala nthawi yayitali. Izi ndizokhudza kutsata - monga kutsatira njira yophikira keke yabwino nthawi zonse.
l ANSI B1.20.3 ndi AS 1722.1 ndi ena mwa miyezo yomwe imatsogolera kupanga ulusi wamakina okakamiza.
l Ku UK, amagwiritsa ntchito BS 21 ndi ISO 7 pa ulusi wa BSPT ndi BSPP .
Opanga amayeneranso kuwonetsetsa kuti ulusi wawo utha kuthana ndi kukakamizidwa komwe akuyenera kutero popanda kutsika kapena kusweka. Ndipamene chitsimikiziro cha khalidwe chimadza.
Miyeso ya ulusi imaphatikizapo phula (kutalika kwa ulusiwo) ndi ngodya ya ulusi. Mwachitsanzo, ulusi wa BSPT uli ndi 60 ° flank angle , yomwe ndi gawo la zomwe zimawapangitsa kukhala apadera.
l Kulekerera ndiko kusiyana kwakung'ono komwe kumaloledwa mu kukula ndi mawonekedwe a ulusi. Iwo ali ngati chipinda chogwedeza mu zidutswa zoyenera pamodzi.
l Chitsimikizo chaubwino chimatanthawuza kuyang'ana gawo lililonse kuti muwonetsetse kuti likukwaniritsa zofunikira. Zili ngati mphunzitsi akukonza homuweki yanu kuti atsimikize kuti mwapeza mayankho olondola.
Pa chisindikizo chopanda kudontha , magawo ngati PTFE tepi (Teflon) , gaskets , kapena O-rings angagwiritsidwe ntchito ndi ulusiwu. Ulusi wokhotakhota ngati NPT ndi BSPT nthawi zambiri ukhoza kusindikiza paokha chifukwa cha mawonekedwe ake - umalimba komanso kulimba pamene akukomedwa.
l Ulusi wa NPT umapangidwa kuti ukhale wosokoneza , zomwe zikutanthauza kuti amapanga chisindikizo cha makina pofinya palimodzi.
l Ulusi wa NPSM umagwira ntchito ndi chitoliro chachikazi chozungulira - mtundu wa mtedza womwe umakulolani kuti muwupope popanda kupotoza chitoliro chonse.
l Ulusi wa NPTF nthawi zina umatchedwa Dryseal American National Standard Taper Pipe Thread chifukwa amapangidwa kuti asindikize popanda kufunikira zinthu zina monga tepi kapena phala.
Zikafika pazingwe zopangira ulusi zomwe zimagwiritsidwa ntchito pamakina okakamiza , tsatanetsatane wake ndi wofunika. Tiyeni tione mmene ulusi umenewu umagwiritsidwira ntchito m’dziko lenileni.
Ulusi wa NPT nthawi zambiri umapezeka m'mafakitale ambiri. Mwachitsanzo, wopanga makina owongolera kuthamanga atha kugwiritsa ntchito zoyika za NPT chifukwa zimagwirizana ndi zida zambiri.
Ulusi wa NPTF , womwe umadziwikanso kuti Dryseal American National Standard Taper Pipe Thread , wapangidwa kuti ukhale wotetezeka kwambiri, wopanda chisindikizo popanda kufunikira kosindikiza ulusi wowonjezera . Amagwiritsidwa ntchito m'malo omwe makina osindikizira ali ofunikira, monga zida zoperekera mafuta.
Ulusi wa NPSM , kapena National Pipe Straight Mechanical , nthawi zambiri amagwiritsidwa ntchito ndi chitoliro chachikazi . Phunziro lachiwonetsero lingaphatikizepo ma hydraulic system pomwe zoyika za NPSM zimalola kusonkhanitsa ndi kukonza kosavuta.
Ulusi wa BSPT , wokhala ndi mbali 60 ° , ndizofala m'mapulogalamu apadziko lonse lapansi. Nthawi zambiri amasankhidwa chifukwa chosindikiza bwino pamakina otengera madzi ndi gasi.
Tiyeni tikambirane kusiyana kwake:
l NPT vs. NPTF : Onse awiri ali ndi ulusi wa chitoliro , koma NPTF imapereka kusokoneza pakati pa ulusi wa ulusi ndi mizu ya ulusi , kuchotsa kufunikira kwa chosindikizira.
l NPSM vs. NPT : NPSM ili ndi ulusi wa chitoliro chowongoka ndipo imafuna gasket kapena O-ring kuti igwirizane popanda kutayikira . Ulusi wopindika wa NPT umapanga chisindikizo ndi ulusi womwewo.
l BSPT's Unique Position : Ulusi wa BSPT ndi wofanana ndi NPT koma uli ndi ngodya yosiyana ya ulusi ndi kukwera kwake , zomwe zimapangitsa kuti zisasinthe ndi zopangira za NPT.
Akatswiri m'mafakitale amalimbikitsa kugwiritsa ntchito tepi ya PTFE (Teflon) kapena mphete yomata yokhala ndi zokokera za NPT kuti mutsimikizire kuti palibe kutayikira . Kwa NPTF, ndikofunikira kuwonetsetsa kuyanjana koyenera kuti mugwiritse ntchito mwayi wake wa dryseal .
Mukamagwira ntchito ndi ma BSPT maulumikizidwe , kumbukirani kuti siwogwirizana ndi NPT kapena NPTF popanda ma adapter. Akatswiri amalangiza kuyang'ana miyezo ya ulusi monga ANSI/ASME B1.20.1 ya NPT, ANSI B1.20.3 ya NPTF, kapena ISO 7 ndi BS 21 ya BSPT kuti muwonetsetse kuti ili yoyenera.
Galling , kapena kuwonongeka kwa ulusi, ndi chiopsezo ndi zophatikiza izi. Kuti mupewe izi, musamakhwime kwambiri ndipo nthawi zonse tsatirani ndondomeko ya pressure system .
Mukayika NPSM , NPTF , NPT , kapena BSPT , ndikofunikira kutsatira malangizo ena kuti muwonetsetse kuti palibe kutayikira . Nayi kalozera wachangu:
l NPT ndi NPTF :
l Ikani tepi ya PTFE kapena choyenera chosindikizira pa ulusi wachimuna.
l Limbitsani kuyenerera ndi dzanja, ndiye gwiritsani ntchito wrench potembenuka komaliza.
l Samalani kuti musamangitse kwambiri, chifukwa izi zitha kuwononga ulusi.
ndi BSPT :
l Mofanana ndi NPT, gwiritsani ntchito tepi ya PTFE kapena chosindikizira cha ulusi.
l Limbani mosamala kuti mukwaniritse chisindikizo cha makina.
NPSM ndi :
l Ulusi uwu wapangidwa kuti ugwirizane ndi chitoliro chachikazi chozungulira.
l Gwiritsani ntchito gasket kapena O-ring kuti musindikize.
l Osawonjeza, chifukwa zitha kuwononga gasket.
l Cross-threading : Zimachitika pamene ulusi sunagwirizane. Nthawi zonse yambani ndi dzanja kuti mupewe.
l Galling : Kulumikizana kwachitsulo ndi chitsulo kungayambitse izi. Gwiritsani ntchito mafuta kuti mupewe.
l Kulimbitsa kwambiri : Kungayambitse kuwonongeka kwa ulusi. Tsatirani malangizo owongolera kuthamanga kwa torque yoyenera.
l Kutayikira : Ngati kutayikira kukuchitika, yang'anani ngati palibe kuzungulira ndikuwonetsetsa kuti ulusi umagwirizana bwino.
l Kuyang'ana Nthawi Zonse : Yang'anani ngati zizindikiro zatha, zowonongeka, kapena zowonongeka.
l Kuyeretsa : Sungani ulusi woyera. Dothi lingayambitse kuchucha.
l Kugwiritsanso ntchito kwa Sealant : Pakapita nthawi, zosindikizira zimatha kutsika. Bwezeraninso ngati pakufunika.
l Kusungirako Moyenera : Sungani zosungira pamalo ouma, aukhondo.
Kumbukirani :
l Ulusi wa NPT ndi NPTF umapanga chisindikizo mwa kusokoneza pakati pa ulusi ndi mizu..
l Ulusi wa BSPT umasindikiza ndi ulusi wokha, ndi mbali ya 60 ° yothandiza kusindikiza bwino.
l Ulusi wa NPSM umadalira kulumikizana kwamakina , nthawi zambiri kumalimbikitsidwa ndi gasket kapena O-ring.
Zikafika pakupanga ulusi , zimakhala ngati puzzle. Chidutswa chilichonse chimakwanira mwanjira inayake. Ulusi wa NPSM (National Pipe Straight Mechanical) ndi wowongoka komanso wopangidwa kuti azilumikizana mwaulere. Ulusi NPT pamene akugwedezeka. wa ( National Pipe Tapered) ulusi umapangidwira ndipo umapanga chisindikizo cholimba mwa kuyika mozama BSPT (British Standard Pipe Taper) umagwiritsidwa ntchito popanga zisindikizo zolimba pamakina okakamiza ndipo zimakhala ndi 55 ° flank angle, yosiyana ndi 60 ° yomwe imagwiritsidwa ntchito mu ulusi wa NPT. Komano, ulusi wa
Tsopano, kodi mungawasanganize iwo? Osati kwenikweni. Kusinthana si masewera omwe mukufuna kusewera ndi zoyika ulusi. Kugwiritsa ntchito NPT ndi NPTF nthawi zina kumatha kugwira ntchito, koma sikutsimikizika kukhala kulumikizana kopanda kutayikira . ndi BSPT ? Ndi nkhani yosiyana chifukwa cha ulusi wake wapadera komanso kamvekedwe kake. Cholakwika chofala kwambiri? Kungoganiza kuti zonse zimagwirizana. Nthawi zonse yang'anani miyezo, monga ANSI/ASME B1.20.1 ya NPT, kupewa kutayikira kapena kuwonongeka.
Ndiye mumasankha bwanji yoyenera? Ganizirani za ntchitoyo. Pakusamutsa madzimadzi ndi gasi , chisindikizo chopanda kudontha ndichofunikira. Ngati mukugwira ntchito ndi makina okakamiza , BSPT ikhoza kukhala njira yopitira. Pamapulogalamu omwe amafunikira chisindikizo chamakina opanda chosindikizira, NPTF ndi bwenzi lanu. Ndipo pamalumikizidwe amakina omwe amatha kupatulidwa mosavuta, NPSM ikhoza kukhala chisankho chabwino kwambiri.
l Chosindikizira chabwino ndi chiyani?
Tepi ya PTFE (Teflon) imagwiritsidwa ntchito nthawi zambiri ndi ulusi wa NPT kuthandiza kusindikiza.
l Ndiyenera kuwapotoza bwanji?
Pitani kukasokoneza - zolimba mokwanira kotero kuti ulusi udutse ndi mizu zimakanikizana, koma osati zothina kwambiri kotero kuti mumavula ulusiwo.
l Nanga bwanji ngodya?
Kumbukirani, NPT ndi NPTF ali ndi 60 ° flank angle , ndipo BSPT ili ndi 55 ° angle..
l Kodi ndingagwiritsirenso ntchito zozolowera izi?
Nthawi zina, koma samalani kuti musamapse —pamene ulusi umatha ndi kukakamirana.
l Bwanji ngati itayikira?
Yang'anani zowonongeka kapena yesani chisindikizo cha mphete kapena O-ring kuti muteteze chitetezo.
Kumbukirani, kupeza zoyenera kuli ngati kusankha chida choyenera pa ntchitoyo. Zonse ndi zatsatanetsatane. Sungani malangizowa m'maganizo, ndipo mudzakhala mukupita kukadziwa bwino zolumikizira ulusi kuti mulumikizane popanda kutayikira..
Tikamalankhula za zopangira ulusi monga NPSM , NPTF , NPT , ndi BSPT , tikukamba za zigawo zomwe zimatithandiza kugwirizanitsa mapaipi ndi ma hoses pamodzi. Zoyikirazi zimaonetsetsa kuti madzi athu, gasi, ndi zinthu zina zikuyenda m'mapaipi osatha. Nazi zomwe taphunzira:
l NPT ndi mtundu wa ulusi wojambulidwa womwe umagwiritsidwa ntchito kwambiri ku USA. Zimapangitsa kuti zigwirizane bwino chifukwa ulusiwo umakhala wocheperako mbali imodzi, ngati kondomu.
l NPTF , yomwe imadziwikanso kuti Dryseal American National Standard Taper Pipe Thread , ili ngati NPT koma idapangidwa kuti ipangitse chisindikizo cholimba kwambiri popanda kufunikira zinthu zina monga tepi ya PTFE..
l NPSM , kapena National Pipe Straight Mechanical , ili ndi ulusi wa chitoliro chowongoka . Ndikwabwino kupanga kulumikizana kwamakina komwe kungathe kuchotsedwa ndikuyika pamodzi mosavuta.
l BSPT , yachidule cha British Standard Pipe Taper , ndi yofanana ndi NPT koma ili ndi ngodya yosiyana ya ulusi ndi kukwera kwake . Ndizofala m'malo omwe amagwiritsa ntchito miyezo yaku Britain.
Kumbukirani, kupeza zoyenera kumatanthauza kudziwa miyezo yanu ya ulusi ndikusankha mtundu woyenera wa machitidwe anu okakamiza.
Dziko la zida zopangira ulusi likusintha. Nazi zomwe zili m'chizimezime:
l Kusindikiza bwino kukuyenda bwino. Tikupeza njira zolumikizirana zolimba kwambiri osafunikira ma gaskets owonjezera kapena ma O-rings.
l Zida zikuyenda bwino, nazonso. Izi zikutanthauza kuti zopangira zimatha kuthana ndi zovuta zambiri komanso kukhala nthawi yayitali.
l Akatswiri amati nthawi zonse amatsatira malangizo amakampani , monga kugwiritsa ntchito ANSI/ASME B1.20.1 ya NPT kapena ISO 7 ya BSPT, kuwonetsetsa kuti chilichonse chikugwirizana bwino.
