Intambo ye-NPT yintambo yepayipi le-taper elijwayelekile laseMelika elingu-60°.Ifomula yokubala i-wap yentambo ithi:Ifomula yobubanzi obuphakathi bomucu ithi: D2=d2=D-0.8XPPIfomula yendlela yentambo ithi: D1=d1=D-1.6XPPImodi yokulingana yochungechunge ithi ihlukaniswe ngokulingana kwe-cone-post noma i-cone-cone fit.Ubude bomucu L yisamba sobude bangempela bobude obuncane obusebenzayo obungekho ngaphansi kwebanga lereferensi + lesabelo somhlangano.Ngemva kokucutshungulwa kwentambo, lapho umkhiqizo oqediwe usuphelile, uphawu olucacisiwe lwentambo kufanele luphawulwe ubuso bokugcina bentambo noma ezinye izindawo ezidonsa amehlo, njengalezi: 4-8NPT-LHUkuvalwa kwalolu chungechunge kuqedwa kusetshenziswa indawo yokuvala phakathi kwemicu. isikhungo sokuhlola sochwepheshe siyophumelela.
Ukuhlolwa kochungechunge lwe-TBG
Intambo ye-TBG intambo yokuxhuma ipayipi le-petroleum, efana nentambo yepayipi likawoyela we-LP, indinganiso yayo ithi: API-5B, intambo ye-TBG ihlukaniswe yaba ugqinsi (EUE EU) futhi hhayi obukhulu (NUE NU) izinhlobo ezimbili, i-Angle yentambo ingu-60 ° isiqephu esingu-1:16.Ukucaciswa kwentambo engacatshangwa kanje: 1.05TBG;1.315 TBG;1.660 TBG;1.900 TBG;22/8TBG;27/8TBG;31/2TBG;41/2TBG.Intambo ye-UPTBG ijiyile (EUE)TBG, amazinyo ayi-8 isikhathi ngasinye, imininingwane yilena: 1.05UPTBG 1.05UPTBG;1.315 UPTBG;1.660UP TBG;1.900UPTBG;2 2/8UPTBG;27/8UPTBG;31/2UPTBG;4UPTBG.41/2UPTBG
.A: Ukulungiselela ngaphambi kokuhlolwa: 1:16 igeji yokukhanya, ipulaki ye-ring gauge.60° teether gauge.CB/T 12726-2002 (S) .2002
Ukuhlolwa kwentambo yaseMelika:
(1)I-engeli yomucu wezinyo lentambo yaseMelika ingu-60°, ehlukaniswa ngokuthi: i-UNS emahhadla, i-UNF enhle, i-ultra-fine UNEF, intambo yendawo yonke ye-UNC.I-pitch ivezwa enanini lamazinyo ku-25.4mm iyintshi ngayinye.Izindlela zokumaka ezifana ne:7/8-9UNC.2B.Ibanga lentambo yaseMelika ihlukaniswe yaba u-A no-B izinhlobo ezimbili, intambo isebenza kuphela kuntambo yangaphandle, ihlukaniswe ngo-1A;2A;3A, ibanga lentambo yangaphakathi imelwe ngu-B, nayo ihlukaniswe ngo-1B;2B;3B.I-1A1B inebanga eliphezulu kakhulu futhi isetshenziselwa i-ordnance yase-US noma ezinye izinjongo ezikhethekile.I-2A2B ifanele izintambo ezijwayelekile zokuxhuma futhi ingagcotshwa phezu kwentambo.Indlela yokuhlola: ububanzi obukhulu bentambo yase-United States;Ububanzi obuncane;I-warp emaphakathi ingaguqulelwa kumanani we-metric M.Khona-ke ngokwendlela yokuhlola intambo yemethrikhi engu-M ukuhlola ububanzi obukhulu bentambo yaseMelika;Ububanzi obuncane;Ububanzi obuphakathi noma obunezicaciso ezifanayo zegeji yepulaki iringi kanye negeji yokumisa ukuze uyihlole;Okunye kuzohlolwa ngokuhambisana nolunye uhlobo nokubekezelela isikhundla nobukhulu obucaciswe enqubweni yokudweba.Indlela yokuguqula intambo yaseMelika ibe intambo yemethrikhi engu-M imi kanje:Okunjengalokhu: 7/8-9UNC.2B Ububanzi bayo bokuzisholo bu: 22.225 mm.Iphimbo layo lithi: 2.822mm, futhi ububanzi bayo bungu-22.225(0.6495 x 2.822) = 20.391 mm.Umkhiqizo wentambo waseMelika oqediwe: Isihlonzi sentambo yomkhiqizo kufanele senziwe phezu komkhiqizo ngaphambi kokuba sigcinwe.
Intambo yepayipi likawoyela ye-LP
ukuhlolwaLP intambo yamapayipi kawoyela;Ifana nentambo yepayipi yomgogodla we-NPT ene-angle contour yentambo engu-60° kanye ne-taper engu-1:16.Umehluko phakathi kwayo nentambo ye-NPT vertebral canal yukuthi ukuphakama kwentambo ye-LP yencazelo efanayo iphansi kunentambo ye-NPT, ukuphakama kwentambo ye-LP yi-0.073P, kanti ukuphakama kwentambo ye-NPT kungu-0.033P, okungukuthi, ithiphu. yentambo ye-LP ithambile kakhulu kunentambo ye-NPT.Futhi intambo ye-LP ine-stop, ingavikela ngempumelelo intambo emonakalweni, uphawu lwe-LP luvalwe ngomugqa wezinyo, ngakho-ke ukunemba kokucubungula kuphakeme kunezidingo zentambo ye-NPT, futhi ubude obusebenzayo bomucu we-LP bude kune-NPT. , okwandisa ubunzima bokucubungula.Ukuhlolwa kwentambo ye-LP:LP;Ukuhlolwa kochungechunge ngokuyisisekelo kufana nalokho kochungechunge lwe-NPT.Idinga 1:16 igeji yokukhanya, ipulaki eliwuchungechunge eliyindilinga.Igeji yamazinyo, irula yobude bezinyo, njll. Ngenxa yokucaciswa okuhlukene kwemicu ye-LP, inani lamazinyo abamba isandla aqinile aqhelelene nalo lihlukile.Lokhu kungahlolwa kusukela kuchungechunge olujwayelekile lwe-API-5B.Ngesikhathi sokuhlolwa nokuhlolwa, ukwamukelwa kosayizi okufanelekile kufanele kwenziwe ngokuya ngenqubo yokudweba kanye nosayizi odingwa yinkontileka.Imikhiqizo efanelekile kufanele imakwe ekucacisweni kwentambo edonsa amehlo.
Isikhathi sokuthumela: Sep-07-2023