BSP zaren da G zaren bambanci

Gabatarwar zaren BSP

BSP Thread shine takaitaccen ma'aunin bututun Biritaniya, yana nufin ma'aunin bututun Biritaniya, wanda ke cikin nau'in W.duk da haka Zare (BS84), kusurwar hakori shine 55°. Bisa ga siffar, zaren BSP suna da nau'i biyu: cylindrical Pipe thread BSPP (British Standard Pipe Parallel) da Taper Pipe thread BSPT (British Standard Pipe Taper).

BSPP inch cylindrical bututu zaren. Wani nau’in zaren bututu ana kiransa da “conical pipe thread”, wanda shine sunan al’ada da ma’auni a cikin littattafan karatu.

Don dalilai na tarihi, an kuma kira BSPP da wasu sunaye. Masu gama gari sune BSPF (British Standard Pipe Fitting), BSPM (British Standard Pipe Mechanical), PS (British Standard Pipe Straight), da dai sauransu. shine G zaren. Saboda haka, BSPP, BSPF, BSPM da PS yanzu ana kiransu da zaren G.

Ana kiransa da zaren G, saboda zaren ya fi yadda ake amfani da shi na asali a cikin Gas, da kuma Gas don Gas a Turanci, amma wasu sun ce G daga Jamusanci Gewinde (ma'anar zaren), bugu da ƙari, G da tube (Guan) a cikin harshen Sinanci na pinyin farko. Harafi guda ɗaya, don haka game da asalin G zaren, ko da wane irin hangen nesa yana da ma'ana, Gaskiya ne daidaituwa.

G zaren, zaren ciki da zaren waje, ana amfani da shi don haɗin da ba a rufe ba. Matsayin aiwatarwa shine BSENISO228-1, tsohon ma'aunin shine BS2779, an soke shi.

BSPT inch taper thread, kuma aka sani da PT thread, ana amfani da shi kawai don haɗin hatimi na gaba ɗaya. BSPT tsohon ma'auni shine BS21, kuma a cikin sabon ma'auni BSEN10226-1, maye gurbinsu da zaren R. Don haka R zaren shine babban sunan BSPT da PT thread.

Harafin R a cikin zaren R ya fito ne daga rohr na Jamusanci (Jamus don "tube"). Zaren R shine ainihin jerin, Rp na kowa, Rs, Rc, R1 da R2. Cikakkun bayanai sune kamar haka:

Rp-inch hatimin zaren ciki na cylindrical

Rs-inch hatimin zaren waje na silindi

Rc-inch hatimin taper na ciki

R1-inch hatimi taper waje zaren, amfani da Rp, watau Rp/R1 "shafi/mazugi" zaren.

R2-inch da aka hatimce zaren waje don amfani da Rc, Rc/R2 "taper/taper" zaren

Ana iya ganin cewa zaren bututun na Burtaniya gabaɗaya sun kasu zuwa zaren bututun silinda da zaren bututun taper.

Zane na zaren silindical (Rp) don rufewa daidai yake da na zaren bututun da ba a rufe ba, amma bambancin ya ta'allaka ne ga daidaiton zaren. The sealing tapered bututu zaren (R) aka tuba zuwa wani taper na 1:16 a kan tushen da cylindrical bututu zaren.

Babban hatimi tare da zaren cylindrical bututu (Rp) tasirin hatimi shine ta cikin zaren idan ya cancanta ƙara filler ɗin rufewa (kamar: ptfe sealing tef), maimakon hatimin tare da tasirin bututun silinda (G) yana ta kusa da iyakar. na haɗin zaren ko amfani da na'urorin rufewa (kamar: nau'in zoben rufewa O).

Bugu da ƙari, akwai bambance-bambance a cikin amfani da ƙira na haƙura na hatimi na yau da kullum da kuma wadanda ba a rufe ba.

A zahiri, yawancin masana'antar sarrafa injina a cikin sarrafa zaren BSP galibi suna fuskantar zaren zobe toshe ma'aunin dubawa ya cancanta amma tare shine yanayin rashin rufewa babban dalilin ya ta'allaka ne a cikin rudani na rufe zaren ciki na Rp da kuma wanda ba a rufe G na ciki ba.

TYa bambanta tsakanin zaren BSP da G thread

G-inch cylindrical bututu zaren (misali: BS2779, BSENISO228-1, ISO7-1)

BSPPinch Silindrical bututu thread (misali: BS2779, BSENISO228-1, ISO7-1)

BSPT- inch taper bututu zaren (misali: BS21, BSEN10226-1, ISO7-1)

R (Rp, Rs, Rc, R1, R2) - Inch taper bututu zaren (misali: BS21, BSEN10226-1, ISO7-1, DIN2999)