I-Decoding Thread Fittings: NPSM, NPTF, NPT, kunye ne-BSPT ecacisiweyo

Ngaba ukhathazwa kukungaqondi iNPSM, NPTF, NPT, kunye neBSPT imisonto? Eli nqaku liza kukukhokela ekuqondeni okucacileyo kwale misonto, kwaye likufundise indlela yokuyifakela kunye neengqwalasela ezibalulekileyo.

Uhlalutyo olunzulu lweentlobo zemisonto

I-NPT (iTaper yeSizwe yoMbhobho) Imisonto

Inkcazo, iimpawu, kunye noYilo oluSiseko

I-NPT imele i -National Pipe Tapered . Ludidi lwentambo ecekethekileyo  esetyenziselwa ukudibanisa imibhobho kunye nokufakwa. Nantsi into ekufuneka uyazi:

l Imisonto eTapered : Imisonto ye-NPT ibetha ngesantya se-1/16 intshi nge-intshi nganye, nto leyo ethetha ukuba ziya zicutheka ukuya ekupheleni.

l Imisonto yemigangatho : Balandela umgangatho we -ANSI/ASME B1.20.1  .

l Iengile yomsonto : Imisonto ineengile yeflanki engama-60°.

l Ukutywinwa ngokuFanelekileyo : Benza itywina lomatshini  ngokungena kokuphazamiseka  phakathi kwemisonto  kunye neengcambu..

Izicelo kwiiNkqubo zeMibhobho kunye nokuSetyenziswa kweShishini

Imisonto ye-NPT ikuyo yonke indawo kwiinkqubo zoxinzelelo . Zisetyenziselwa ukuqinisekisa ukutywinwa okungavuziyo  kwi:

l Ukuhanjiswa kolwelo kunye negesi : Imibhobho ehambisa amanzi, ioyile, okanye irhasi.

l IiNkqubo zokuCalithwa koxinzelelo : Izixhobo ezilinganisa uxinzelelo.

Amashishini asebenzisa imisonto yeNPT aquka:

l Ukwenziwa kwemveliso

l Iimoto

l I-Aerospace

IiNgcebiso zokuFakela, izenzo eziNgcono, kunye noSetyenziso oluQhelekileyo

Xa uhlohla imisonto yeNPT, landela ezi ndlela zingcono:

1. Sebenzisa i-PTFE Tape : Songa iteyiphu ye-PTFE  (Teflon) ujikeleze umsonto oyindoda ukuphucula itywina.

2. Musa ukuQinisa Ngokugqithisileyo : Ukuqiniswa ngokugqithiseleyo kunokubangela i-galling , apho imicu yonakaliswa.

3. Khangela iindawo ezivuzayo : Soloko uvavanya umdibaniso wokuvuza.

Ukusetyenziswa okuqhelekileyo kubandakanya:

l Imibhobho yokudibanisa : Njengakwimibhobho yendlu yakho.

l Ufakelo : Njengengqiniba okanye iitiyi ezinceda ukutshintsha indlela yokuhamba.

Izinto eziluncedo, imida, kunye noMahluko kwiNPTF

Izinto eziluncedo:

l UQhagamshelwano olungavuziyo : Zenzelwe ukwenza itywina eliqinileyo.

l Yamkelwe ngokubanzi : I-NPT ngumgangatho kumashishini amaninzi.

Imida:

l Umngcipheko wokuQinisa ngaphezulu : Kunokwenzeka ukonakalisa imicu.

l Ngamana ifuna i-Sealant : Ngamanye amaxesha, i-sealant eyongezelelweyo iyafuneka ukuqinisekisa ukutywinwa okungavuziyo.

Umahluko kwi-NPTF:

l I -NPTF , okanye i-National Pipe Taper Fuel , eyaziwa ngokuba yi -Dryseal American National Standard Taper Pipe Thread , yenzelwe ukubonelela ngesitywina esingqongqo ngaphandle kwesidingo se-sealant eyongezelelweyo.

l Imisonto ye-NPTF  inoyilo olwahluke kancinane oluvumela udibaniso lomatshini  ngaphandle kokusetyenziswa kwe tape ye-PTFE  okanye ezinye izitywini, ngokungafaniyo nemisonto ye-NPT esoloko ifuna yona.

Khumbula, i-NPT imalunga nokwenza umdibaniso wombhobho ochwetheziweyo  othembekileyo nosetyenziswa ngokubanzi. Nokuba usebenza emotweni okanye ulungisa indawo evuzayo ekhaya, ukwazi ngemisonto ye-NPT kukunceda wenze uqhagamshelo olungcono.

 

I-NPTF (i-National Pipe Taper Fuel) Imisonto

Amagqabantshintshi ngeMigangatho yemisonto yeNPTF kunye noYilo

Imicu ye-NPTF, eyaziwa ngokuba yiDryseal American National Standard Taper Pipe Thread , landela imigangatho ye -ANSI B1.20.3  . Le misonto iyafana ne-NPT kodwa yenzelwe itywina elingcono. Imisonto ye-NPTF ine -angle ye-flank ye-60 °  kwaye yenze itywina lomatshini  ngokusebenzisa ukungenelela kokungena  phakathi kwee-thread crests kunye neengcambu. Oku kuthetha ukuba iintambo ziyaqhekeka kunye ukwenza itywina eliqinileyo ngaphandle kokufuna izitywini ezongezelelweyo.

Umahluko phakathi kwe-NPT kunye ne-NPTF

Ngelixa imisonto ye-NPT kunye ne-NPTF ijongeka ngokufanayo, uyilo lwazo lwahlukile . Imisonto ye-NPT iyilwe phantsi kwe -ANSI/ASME B1.20.1 , kwaye inokufuna iteyiphu ye-PTFE  okanye ezinye izitywini ukuqinisekisa uqhagamshelo olungavuziyo . Ngakolunye uhlangothi, iintambo ze-NPTF, ezilandela i-ANSI B1.20.3 , zenziwe ukuba zibe ne-mesh ziqiniswe kwaye zenze isitywina ngaphandle kwezinto ezongezelelweyo. Bafezekisa oku ngoyilo oluvumela i -thread crests  kunye neengcambu  ukuba zidibanise kunye, zenze itywina elingenakuvuza..

Usetyenziso lweziBaso kunye neGesi, Ukuphumeza amatywina angaVuziyo angaMahla

Ehlabathini lamafutha kunye negesi , imisonto ye-NPTF lukhetho lokukhetha. Zenzelwe ukwenza isitywina esingavuziyo  esibalulekileyo kwiinkqubo zoxinzelelo . Ezi nkqubo azinakukwazi ukuvuza, njengoko nencinci inokuba yingozi. Imisonto ye-NPTF isetyenziswa kwiinkqubo zokulinganisa uxinzelelo  kunye namalungu apho ukugcina ubunyulu kunye nokunyaniseka kolwelo okanye igesi kubalulekile.

Iimeko zokuSebenza, ukuNhambelana, kunye nokuTshintshana nge-NPT

Imisonto ye-NPTF ifumaneka rhoqo kwizicelo apho itywina elingavuziyo  liyimfuneko, kwaye akukho sitywino sifunwayo. Nangona kunjalo, ngelixa i-NPTF kunye ne-NPT imisonto inokuxutywa ngamanye amaxesha, oku akusoloko kukhuselekile okanye kusebenza. Imisonto ye-NPTF inokujijwa kufakelo lwe-NPT, kodwa umva usenokungatywinwa kakuhle kuba i-NPTF yenzelwe ukulingana okukufutshane. Kubalulekile ukujonga ukuhambelana phambi kokuba uzixube ukunqanda imiba efana nenyongo  okanye ukutywinwa okungafanelekanga.

I-NPSM (i-National Pipe Straight Mechanical) Imisonto

Inkcazo, iimpawu, kunye neZiseko ze-NPSM Threads

Imisonto ye-NPSM luhlobo lwemisonto yombhobho ethe tye . Balandela imigangatho ye -ANSI/ASME B1.20.1  . Le misonto yenzelwe ukudityaniswa koomatshini  endaweni yokwenza itywina. Zine -angle ye-60 ° yeflank  kwaye zenzelwe ukusetyenziswa kunye ne -gasket  okanye i-O-ring  ukwenza uqhagamshelwano olungavuzi..

Amanqaku aphambili  malunga nemicu ye-NPSM: - Ziyahambelana , oku kuthetha ukuba ububanzi buhambelana. - Imisonto ye-NPSM ayicoli njengemisonto ye -NPT  (i-National Pipe Tapered). - Zisetyenziselwa ukwenza uqhagamshelo ngoomatshini . - Ukusebenza kakuhle kokutywina  kuvela kwiigaskets, hayi imisonto ngokwazo.

Izicelo kwiiNkqubo zeHydraulic kunye neemeko zokusetyenziswa ngokufanelekileyo

Imisonto ye-NPSM isoloko ifumaneka kwiinkqubo zehydraulic  apho itywina elingavuziyo  libalulekile. Basebenza kakuhle kwiinkqubo zoxinzelelo  ezifana neenkqubo zokulinganisa uxinzelelo . Ufakelo lwe -Female Pipe Swivel  luqhelekileyo kunye nemicu ye-NPSM, evumela ukufakwa lula kwiindawo eziqinileyo.

Iimeko ezifanelekileyo zokusetyenziswa  zibandakanya: - Apho itywina lomatshini  libaluleke ngaphezu kokutywinwa komsonto. - Iinkqubo ezifuna ukuchithwa rhoqo kunye nokudityaniswa kwakhona. - Xa usebenzisa i -gasket  okanye i-O-ring  ikhethwa ngaphezu kwe -thread sealant.

Ukuthelekiswa nezinye iintlobo zemisonto, ukuTshintshelaniswa neNPTF

I-NPSM ngamanye amaxesha inokudideka kunye ne -NPTF  (i-National Pipe Taper Fuel), eyaziwa ngokuba yi -Dryseal American National Standard Taper Pipe Thread . Nantsi indlela abathelekisa ngayo:

l Imisonto ye-NPTF  yenzelwe ukubonelela ngesitywina esingavuziyo  ngaphandle kwemfuneko yezitywini ezongezelelweyo. Benza ukungenelela okufanelekileyo  phakathi kwee -thread crests  kunye neengcambu zentambo.

l Imicu ye-NPSM  ifuna i -gasket  okanye i-O-ring  ukuqinisekisa uxhulumaniso olungavuziyo.

l I-NPSM ayitshintshi nge -NPTF  okanye i-NPT  ngenxa yemigangatho eyahlukeneyo yemisonto.

Ukutywinwa ngokuFanelekileyo kunye nezicelo zoShishino

Imisonto ye-NPSM ixabiswa ngokusebenza kwayo kokutywina  xa isetyenziswe ngotywino olufanelekileyo lomatshini . Zisetyenziswa ngokubanzi ku: - Ulwelo kunye  nezicelo zokudluliselwa kwegesi. - Amashishini afuna uqhagamshelo lomatshini oluthembekileyo.

Izicelo zemizi-mveliso  ziquka: - Ukucoca amanzi kunye namanzi amdaka. - Iinkqubo zomoya. - Iinkqubo zokuthambisa.

I-BSPT (i-British Standard Pipe Taper) Imisonto

Intshayelelo kwi-BSPT Thread Standards

Xa sithetha ngemisonto yeBSPT , sintywila kwihlabathi lemibhobho kunye noqhagamshelo oluyimfuneko kulwelo kunye nokuhanjiswa kwegesi . I-BSPT imele i- British Standard Pipe Taper . Ludidi lomsonto ocekethekileyo  osetyenziselwa ukwenza itywina elingavuziyo . Lo mgangatho uchazwe kumaxwebhu afana ne -BS 21  kunye ne -ISO 7.

Iimpawu eziKhethekileyo kunye nokuthelekisa kunye ne-NPT kunye ne-NPTF

Imisonto ye-BSPT yodwa. Zine -angle ye-60 ° yeflank  kwaye i-tapered, into ethetha ukuba iya iyancipha njengoko ingena nzulu. Oku kwahlukile kwimicu ye-NPT , ephinde ifakwe kwi-tapered kodwa ibe ne-angle ye-60 ° intambo esetyenziswa eMelika, njengoko ichazwa yi -ANSI/ASME B1.20.1.

Ngoku, makhe sithelekise iBSPT neNPTF . I-NPTF, okanye i-National Pipe Taper Fuel , edla ngokubizwa ngokuba yiDryseal American National Standard Taper Pipe Thread , njenge -ANSI B1.20.3 , yenzelwe ukutywinwa okuqinileyo kune-NPT. Ifezekisa oku ngokudala uphazamiseko olufanelekileyo  phakathi kweekresti zentambo  kunye neengcambu zentambo . I-BSPT ayixhomekekanga kolu lungelelwano lokutywinwa. Endaweni yoko, inokufuna intambo yokutywina  efana ne -PTFE tape (Teflon)  okanye igasket  ukuthintela ukuvuza.

I-BSPT kwizicelo zaMazwe ngaMazwe nakwiHlabathi liphela

Imisonto ye-BSPT isetyenziswa ngokubanzi ngaphandle kwe-United States, ngakumbi kumazwe alandela imigangatho yobunjineli baseBritane. Zihlala zibonwa kwiinkqubo zoxinzelelo  kunye neenkqubo zokulinganisa uxinzelelo . Ukukwazi kwabo ukwenza itywina lomatshini  kubenza bafaneleke kwizicelo ezininzi zamazwe ngamazwe.

Uhlalutyo lokuthelekisa kunye nezinye iintlobo zemisonto

Xa sijonga i-BSPT kunye nezinye iintlobo zentambo ezifana ne -NPSM (i-National Pipe Straight Mechanical)  kunye ne-BSPP (i-British Standard Parallel Pipe) , sibona ukuba i-BSPT yenzelwe ukudala uxhulumaniso olungavuziyo  kwimicu ye-tapered, ngelixa i-NPSM kunye ne-BSPP ziyimibhobho yepayipi echanekileyo . Iintambo ze-BSPT zenza uxhulumaniso lomatshini  ngaphandle kokufuna umsesane odibeneyo  okanye i-O-ring , ngokungafaniyo ne-BSPP enokufuna ezi zinto zokutywinwa.

 

Imisonto ye-BSPT ilungile kwiimeko apho ufuna itywina eliqinileyo, elingavuziyo  ngaphandle kobunzima bezinye iindlela zokutywina. Ilula ukuyisebenzisa kunemisonto ye-NPTF , efuna ulungelelwaniso loxinzelelo oluchanekileyo  ukunqanda imiba efana nerhala  okanye umonakalo osuka kuqina kakhulu.

IiNgcaciso zobuGcisa kunye neMigangatho

Imilinganiselo esemgangathweni, ukubalwa kwemisonto, kunye neMigangatho ye-ANSI

Xa sithetha malunga nokufakwa kwentambo  njenge-NPSM, NPTF, NPT, kunye ne-BSPT, yonke into malunga nendlela yokudibanisa kunye nokutywinwa kwemibhobho. Le migangatho yomsonto  isinceda siqinisekise ukuba izinto ziyadibana ngokufanelekileyo. Yicinge njengeebhloko ze-LEGO - kufuneka zihambelane ngokugqibeleleyo ukuze zinamathele kunye.

l I-NPSM  kunye ne -NPS  zinemisonto ethe tye, nto leyo ethetha ukuba aziqini xa zingena.

l NPT , NPTF , kunye ne -BSPT  zicuthiwe. Oku kuthetha ukuba ziya ziqina ngakumbi, ezifana nefenitshala, enceda ukumisa ukuvuza.

I -American National Standards Institute (ANSI)  ibeka imithetho yale misonto e-US Ngokomzekelo, i-ANSI / ASME B1.20.1  yeyemicu ye-NPT. Basixelela ukuba kufuneka ibe mikhulu kangakanani imisonto, mingaphi na kwi-intshi (linani lemisonto elo), kunye nemilo ekufuneka babenayo.

Izinto eziphathekayo, iMigangatho yokuVelisa, kunye nokuThotyelwa

Izinto eziphathekayo zibaluleke kakhulu. Uninzi lwezinto ezifakelweyo zintsimbi, njengentsimbi okanye ubhedu, kuba zomelele. Ukwenziwa kwala malungu kulandela imithetho engqongqo ukuqinisekisa ukuba akhuselekile kwaye aya kuhlala ixesha elide. Oku kumalunga nokuthobela  - njengokulandela iresiphi yokubhaka ikeyiki egqibeleleyo ngalo lonke ixesha.

I- ANSI B1.20.3  kunye ne-AS 1722.1  yeminye yemigangatho ekhokela indlela yokwenza imicu kwiinkqubo zoxinzelelo..

l E-UK, basebenzisa i-BS 21  kunye ne-ISO 7  ye -BSPT  kunye ne -BSPP  imicu.

Abavelisi kwakhona kufuneka baqinisekise ukuba imisonto yabo inokumelana noxinzelelo abafanele ukuba bayenze ngaphandle kokuvuza okanye ukuqhawuka. Kulapho ukuqinisekiswa komgangatho . kungena khona

Ukuqonda Ubungakanani bemisonto, ukunyamezelwa, kunye noQinisekiso loMgangatho

Imilinganiselo yemisonto ibandakanya inowuthi  (ikude kangakanani imisonto) kunye ne- engile  yemisonto. Ngokomzekelo, iintambo ze-BSPT zine- angle ye-flank ye-60 ° , eyinxalenye yento eyenza ibe yodwa.

l Ukunyamezelwa  ngumahluko omncinci ovunyelwe kubukhulu kunye nokumila kwemisonto. Bafana negumbi lokushukuma kwiziqwenga ezifanelekileyo kunye.

l Ukuqinisekiswa komgangatho  kuthetha ukujonga indawo nganye ukuqinisekisa ukuba iyahambelana nemigangatho. Kufana notitshala ohlela umsebenzi wakho wesikolo wasekhaya ukuze aqiniseke ukuba iimpendulo uzifumene kakuhle.

Kwitywina elingavuziyo elingavuziyo , iindawo ezinjenge PTFE tape (Teflon) , gaskets , okanye iO-rings  zinokusetyenziswa nale misonto. Imisonto ecociweyo  efana ne -NPT  kunye ne-BSPT  ihlala ivaleleke ngokwawo ngenxa yokumila kwayo- iya iqina kwaye iqina njengoko ikrolwa ngaphakathi.

Iinyani eziKhawulezayo:

l Imisonto ye-NPT  iyilelwe ukuba ibe lungenelelo olulungelelanisiweyo , okuthetha ukuba benza itywina lomatshini  ngokucudisa kunye.

l Iintambo ze-NPSM  zisebenza nge- swivel yombhobho wabasetyhini  - uhlobo lwe-nut ekuvumela ukuba ujike ngaphandle kokujija umbhobho wonke.

l Imisonto ye-NPTF  ngamanye amaxesha ibizwa ngokuba yiDryseal American National Standard Taper Pipe Thread  kuba yenzelwe ukutywina ngaphandle kokufuna izinto ezongezelelweyo njengeteyiphu okanye ukuncamathisela.

Izicelo eziSebenzayo kunye noHlalutyo lokuthelekisa

Izicelo zeHlabathi zangempela kunye nezifundo zeCase zeentlobo ezahlukeneyo zemisonto

Xa kuziwa kwimicu yokufakelwa kwentambo  esetyenziswa kwiinkqubo zoxinzelelo , iinkcukacha zibalulekile. Makhe sijonge ukuba le misonto isetyenziswa njani kwihlabathi lenene.

Imisonto ye-NPT  ifumaneka rhoqo kwizicelo zemizi-mveliso ngokubanzi. Umzekelo, umenzi weenkqubo zokulinganisa uxinzelelo  unokusebenzisa ukufakwa kwe-NPT ngenxa yokuhambelana kwazo noluhlu olubanzi lwezixhobo.

Imisonto ye-NPTF , eyaziwa ngokuba yiDryseal American National Standard Taper Pipe Thread , yenzelwe itywina elikhuselekileyo, elingenalo ukuvuza ngaphandle kwesidingo se -thread sealant eyongezelelweyo . Zisetyenziswa kwizicelo apho isitywini soomatshini  sibalulekile, njengakwisixhobo sokukhupha amafutha.

Imisonto yeNPSM , okanye iNational Pipe Straight Mechanical , iqhele ukusetyenziswa ngokujikeleza kombhobho wabasetyhini . Uphononongo lwemeko lunokubandakanya inkqubo ye-hydraulic apho ukufakwa kwe-NPSM kuvumela ukudibanisa nokugcinwa lula.

Iintambo ze-BSPT , kunye ne -60 ° yazo ye-flank angle , ziqhelekileyo kwizicelo zamazwe ngamazwe. Bahlala bekhethelwa ukutywinwa kwabo ngempumelelo  kwiinkqubo zolwelo kunye negesi.

Uhlalutyo lothelekiso: NPT vs. NPTF, NPSM vs. NPT, BSPT's Unique Position

Masicazulule iiyantlukwano:

l NPT vs. NPTF : Zombini zinentambo ecekethekileyo yombhobho , kodwa i-NPTF ibonelela ngongenelelo olungenekayo  phakathi kweecrests zomsonto  kunye neengcambu zomsonto , isusa imfuno yesitywina.

l I-NPSM vs. NPT : I-NPSM inemisonto yombhobho ethe tye  kwaye ifuna i-gasket okanye i-O-ring ukwenza uqhagamshelwano olungavuziyo . Imisonto ecekethekileyo ye-NPT yenza itywina ngemisonto ngokwayo.

l Isikhundla esahlukileyo se-BSPT : Imisonto ye-BSPT iyafana ne-NPT kodwa ine- angle yentambo eyahlukileyo  kunye ne-pitch , ibenza bangatshintshi kunye nokufakwa kwe-NPT.

IiNgcebiso zeNgcali kunye neeNgcebiso zaBachwephesha boShishino kuFakelo lwemisonto

Iingcali zeshishini zicebisa ukuba kusetyenziswe iteyiphu ye-PTFE (Teflon)  okanye ikhonkco elidityanisiweyo leringi  elinezifakelo ze-NPT ukuqinisekisa ukutywinwa okungavuziyo . Kwi-NPTF, kubalulekile ukuqinisekisa uthethathethwano olufanelekileyo ukuthatha ithuba lomsebenzi wayo wedryseal  .

Xa usebenza ngoqhagamshelwano lwe-BSPT , khumbula ukuba azihambelani ne-NPT okanye i-NPTF ngaphandle kweadaptha. Iingcali zicebisa ukujonga imigangatho yentambo  efana ne -ANSI / ASME B1.20.1  ye-NPT, i-ANSI B1.20.3  ye-NPTF, okanye i-ISO 7  kunye ne -BS 21  ye-BSPT ukuqinisekisa ukufaneleka ngokufanelekileyo.

Igalling , okanye umonakalo womsonto, ngumngcipheko ngezi zifakelo. Ukuyinqanda, ungaze uqinise ngokugqithisileyo kwaye soloko ulandela imigaqo yoxinzelelo lwenkqubo .

Ukufakela, uLondolozo, kunye neZenzo eziGqwesileyo

IiNdlela eziPhambili zokuFakela Iindidi ezahlukeneyo zemisonto

Xa uhlohla i-NPSM , NPTF , NPT , okanye izifakelo ze-BSPT  , kubalulekile ukulandela izikhokelo ezithile ukuqinisekisa uqhagamshelwano olungavuziyo . Nasi isikhokelo esikhawulezayo:

l NPT  kunye neNPTF :

l Faka i-PTFE tape okanye i  efanelekileyo -thread sealant  kumsonto wendoda.

l Qinisa ukufakwa ngesandla, emva koko sebenzisa isitshixo ekujikeni kokugqibela.

l Qaphela ukuba ungaqinisi kakhulu, njengoko oku kunokonakalisa imisonto.

l BSPT :

l Ngokufana ne-NPT, sebenzisa i-PTFE tape  okanye isitywina somsonto.

l Qinisa ngononophelo ukufezekisa itywina lomatshini.

l NPSM :

l Le misonto iyilelwe ukuba idibane nombhobho ojikelezayo.

l Sebenzisa i -gasket  okanye i-O-ring  ukutywina.

l Musa ukugqithisa, njengoko kunokubangela umonakalo kwi- gasket.

Imingeni eqhelekileyo kuFakelo kunye nendlela yokuyoyisa

l Ukunqumla imisonto : Kwenzeka xa imisonto ingalungelelaniswanga. Soloko uqala ngesandla ukuyinqanda.

l Ukugalela : Ukudibana kwentsimbi ukuya kwintsimbi kunokubangela oku. Sebenzisa i-lubrication ukuyiphepha.

l Ukuqiniswa ngokugqithiseleyo : Kungakhokelela kumonakalo wentambo. Landela izikhokelo zenkqubo yokulinganisa uxinzelelo  lwetorque efanelekileyo.

l Ukuvuza : Ukuba ukuvuza kuyenzeka, jonga ukuba akukho bungqukuva  kwaye uqinisekise ukubandakanyeka okufanelekileyo komsonto.

ULondolozo, ukuJonga iNgxaki, kunye nokuqinisekisa uBomi obude beZifakelo zemisonto

l Ukuhlolwa rhoqo : Jonga iimpawu zokuguga, ukubola, okanye ukonakaliswa.

l Ukucoca : Gcina imisonto icocekile. Ukungcola kunokubangela ukuvuza.

l Ukusetyenziswa kwakhona kwe-Sealant : Ngokuhamba kwexesha, ii-sealants zinokuthoba. Faka isicelo kwakhona njengoko kufuneka.

l UGcino oluLungileyo : Gcina izixhobo ezisecaleni kwindawo eyomileyo necocekileyo.

Khumbula :

I-l  NPT  kunye ne -NPTF  imisonto yenza itywina ngokungena kophazamiseko  phakathi kwemisonto yeentambo  kunye neengcambu..

l Imisonto  ye-BSPT  itywinwa ngemisonto yodwa, kunye ne -angle yeflanki eyi-60 °  inceda ekutywineni ukusebenza kakuhle.

l Imicu  ye-NPSM  ixhomekeke kuxhulumaniso lomatshini , kaninzi iphuculwe nge- gasket  okanye i-O-ring.

Ii-FAQ kwi-Tread Fittings

Umahluko oPhambili phakathi kwe-NPSM, NPTF, NPT, kunye ne-BSPT Imisonto

Xa kufikwa kwimisonto efakelweyo , ifana nephazili. Isiqwenga ngasinye singena ngendlela ethile. Iintambo ze -NPSM  (i-National Pipe Straight Mechanical) zithe tye kwaye zenzelwe ukudityaniswa komatshini ngokukhululekileyo. Imicu ye NPT  i-National Pipe Tapered) ifakwe i-tapered kwaye yenza itywina eliqinileyo ngokufaka nzulu njengoko zifakwe kwi- -  ( screw . I-BSPT  (iBritish Standard Pipe Taper) imicu, ngakolunye uhlangothi, isetyenziselwa ukwenza izitywina eziqinileyo kwiinkqubo zoxinzelelo kwaye zibe ne-angle ye-flank ye-55 °, eyahlukileyo kwi-angle ye-60 ° esetyenziswe kwimicu ye-NPT.

Ukutshintshelana, uQhagamshelwano olungavuziyo, kunye neempazamo eziqhelekileyo

Ngoku, ungazixuba? Hayi ncma. Ukutshintshana  ayingomdlalo ofuna ukuwudlala ngofakelo lwentambo. Ukusebenzisa i-NPT  nge -NPTF  ngamanye amaxesha kunokusebenza, kodwa akuqinisekwanga ukuba kuya kuba luqhagamshelwano olungavuziyo . Kwaye BSPT ? Libali elahluke ngokupheleleyo ngenxa ye-engile yalo ekhethekileyo yentambo kunye nenowuthi. Eyona mpazamo ixhaphakileyo? Kucingelwa ukuba zonke ziyahambelana. Soloko ujonga imigangatho, njenge -ANSI/ASME B1.20.1  ye-NPT, ukuthintela ukuvuza okanye umonakalo.

Ukumisela udidi lwemisonto eLungileyo kwizicelo ezithe ngqo

Ke, ukhetha njani eyona ilungileyo? Cinga ngomsebenzi. Kugqithiso lwe-fluid negesi , isitywina esingavuziyo  singundoqo. Ukuba usebenza kunye neenkqubo zoxinzelelo , i-BSPT  inokuba yindlela yokuhamba. Kwizicelo ezifuna itywina lomatshini  ngaphandle kwesitywina, iNPTF  ngumhlobo wakho. Kwaye kuqhagamshelo lomatshini  olunokwahlulwa ngokulula, iNPSM  inokuba lolona khetho lulungileyo.

Ii-FAQ ezongezelelweyo eziNxibelela iiNgxaki eziSebenzayo

l Yintoni isitywini esilungileyo? 

Iteyiphu ye-PTFE  (Teflon) isoloko isetyenziswa ngemisonto ye-NPT ukunceda ukutywina.

l Ndizikrweqe kangakanani? 

Yiya kwi- interference fit -qina ngokwaneleyo ukuze i -thread crests  kunye neengcambu  zicinezele kunye, kodwa zingaqini kakhulu ukuba ukhulule imisonto.

l Kuthekani ngeeengile? 

Khumbula, i-NPT  kunye ne -NPTF  zine- angle ye-60 ° yeflank , kwaye i-BSPT  ine- angle engama-55 °..

l Ndingaphinda ndisebenzise ezi zifakelo?

 Maxa wambi, kodwa kulumkele ukugqabhuka —xa imisonto iguga yaye inamathelana.

l Kuthekani ukuba iyavuza?

 Khangela umonakalo okanye uzame isitywina se-ring edibeneyo  okanye i -O-ring  yokhuselo olongezelelweyo.

Khumbula, ukufumana ukulingana okufanelekileyo kufana nokukhetha isixhobo esifanelekileyo somsebenzi. Konke malunga neenkcukacha. Gcina ezi ngcebiso engqondweni, kwaye uya kuba usendleleni eya enkosini lwemisonto  yofakelo yonxibelelwano olungavuziyo..

Ukuqukumbela

Xa sithetha malunga nokufakwa kwentambo  efana ne -NPSM , NPTF , NPT , kunye ne -BSPT , sithetha ngamalungu asinceda ukuba sidibanise imibhobho kunye ne-hoses kunye. Ezi zixhobo ziqinisekisa ukuba amanzi ethu, igesi, nezinye izinto zihamba ngemibhobho ngaphandle kokuvuza. Nantsi into esiyifundileyo:

l NPT  luhlobo lwentambo ecekethekileyo  esetyenziswa kakhulu e-USA. Yenza ukulingana okuqinileyo kuba imisonto iba mincinci kwelinye icala, ifana nekhowuni.

l NPTF , ekwaziwa ngokuba yiDryseal American National Standard Taper Pipe Thread , ifana ne-NPT kodwa yenzelwe ukwenza itywina eliqina ngakumbi elingavuziyo  ngaphandle kokufuna izinto ezongezelelweyo njengeteyiphu ye-PTFE..

l NPSM , okanye iNational Pipe Straight Mechanical , ineentambo zombhobho ezithe ngqo . Ilungile ukwenza uqhagamshelo lomatshini  olunokuthi luhlulwe kwaye lubuyiselwe kunye ngokulula.

l BSPT , mfutshane kuMbhobho oMgangatho waseBritane we Taper , iyafana ne NPT kodwa inomsonto owahlukileyo  kunye nepitch . Ixhaphakile kwiindawo ezisebenzisa imigangatho yaseBritani.

Khumbula, ukufumana ukulingana okufanelekileyo kuthetha ukwazi imigangatho yakho yomsonto  kunye nokukhetha uhlobo oluchanekileyo kwiinkqubo zakho zoxinzelelo.

IiNdlela zexesha elizayo kwiTekhnoloji yokuFaka imisonto kunye neeNgcebiso kuShishino

Ihlabathi leentambo zokufakelwa  lihlala litshintsha. Nantsi into eselundini:

l Ukusebenza kakuhle kokutywina  kuya kubangcono. Sifumana iindlela zokwenza uqhagamshelo oluqine kakhulu ngaphandle kokufuna ii-gaskets ezongezelelweyo  okanye ii-O-rings.

l Izixhobo  ziyaphucuka, nazo. Oku kuthetha ukuba izixhobo zinokujongana noxinzelelo olungakumbi kwaye zihlala ixesha elide.

l Iingcali zicebisa ukuba zihlale zilandela iingcebiso zoshishino , njengokusebenzisa i-ANSI/ASME B1.20.1  ye-NPT okanye i-ISO 7  ye-BSPT, ukuqinisekisa ukuba yonke into ihambelana ngokufanelekileyo.