Ukubuka: 163 Umbhali: Isikhathi Sokushicilela Isihleli Sesayithi: 2023-08-09 Umsuka: Isayithi
Ezinhlelweni zamapayipi amanzi, uhlobo lokuxhuma olusetshenziswayo ludlala indima ebalulekile ekuqinisekiseni ukusebenza kahle kanye nokusebenza kahle kohlelo. Olunye uhlobo lokuxhuma olusetshenziswa kakhulu yi-NPT, emele i-National Pipe Tapered. Ukuxhumana kwe-NPT kwaziwa ngokwethembeka nokuguquguquka, okuwenza abe yinketho edumile ezimbonini ezahlukahlukene. Ukusuka emapayipini okuhlala kuwo kuya kuzinhlelo zokusebenza zezimboni, ukuxhumeka kwe-NPT kunikeza uphawu oluvikelekile nolungavuzi, okuqinisekisa ukuhamba kahle koketshezi noma amagesi.
Kulesi sihloko, sizongena emhlabeni wokuxhumana kwe-NPT, sikunikeze ukuqonda okuphelele kwezici zabo, izinzuzo, kanye nezinhlelo zokusebenza. Kungakhathaliseki ukuthi ungumnikazi womuzi ofuna ukuqonda isistimu yokufaka amapayipi endlini yakho noma uchwepheshe osebenza ngamapayipi osebenza ngamapayipi ofuna ukuthuthukisa ulwazi lwakho, lesi sihloko siklanyelwe ukukuhlomisa ngalo lonke ulwazi oludingekayo mayelana noxhumo lwe-NPT. Kusukela ekuchazeni idizayini yokuqopha kuye ekuxoxeni ngezinhlobo ezahlukene zezintambo ze-NPT, sizokuhlanganisa konke. Ngakho-ke, ake singene sihlole umhlaba wokuxhumana kwe-NPT ukuze siqinisekise isistimu yokufaka amapayipi ethembekile nesebenzayo.
Izinhlobo zokuxhuma ze-NPT (National Pipe Tapered) zisetshenziswa kakhulu ezimbonini ezahlukahlukene, ezihlanganisa amapayipi, uwoyela negesi, kanye nokukhiqiza. Lokhu kuxhumana kuklanyelwe ukuhlinzeka ngophawu oluthembekile nolungavuzi phakathi kwamapayipi nezinto ezifakwayo. Izinga le-NPT lasungulwa yi-American National Standards Institute (ANSI) ukuze kuqinisekiswe ukuhambisana nokushintshashintsha kokufakwa kwamapayipi.
Uxhumano lwe-NPT luhlanganisa ukwakheka kwentambo ecijile, okusho ukuthi ububanzi bezintambo buyancipha kancane kancane ukuya ekupheleni kwepayipi. Lo mklamo wokuqopha udlala indima ebalulekile ekudaleni uphawu oluqinile phakathi kwentambo yesilisa neyesifazane. Izintambo zisikwa nge-engeli engu-60 degrees, okubavumela ukuthi bahlangane ngokuqinile lapho uxhumano luqiniswa.
Idizayini yokucisha yokuxhumana kwe-NPT ibalulekile ekudaleni uphawu oluthembekile olungamelana nokucindezela okuphezulu futhi luvimbele ukuvuza. Lapho intambo yesilisa neyesifazane iqiniswa, izindawo ezicijile ziyahlangana, zenze uphawu lwensimbi olusuka kunsimbi. Lolu phawu lusebenza kahle kakhulu ekuvimbeleni ukuvuza koketshezi noma igesi, okwenza uxhumano lwe-NPT lufanelekele izinhlelo zokusebenza lapho kudingeka khona ukuhlangana okuvikelekile nokungavuziyo.
Umklamo we-tapering uhlinzeka ngezakhiwo zokuzivala, okusho ukuthi lapho uxhumano luqiniswa, uphawu luba luqina. Lokhu kungenxa yesenzo sokushada sezintambo ezi-tapered, ezicindezela izinto futhi zidale uphawu oluqinile. Kodwa-ke, kubalulekile ukuqaphela ukuthi ukuqinisa kakhulu uxhumano kungaholela ekulimaleni kwentambo noma ukuphuka, ngakho-ke kubalulekile ukulandela amasu okufaka afanele.
Uxhumano lwe-NPT luqukethe izingxenye ezimbili eziyinhloko: imicu yowesilisa nowesifazane. Intambo yesilisa itholakala ngaphandle kwepayipi noma i-fitting, kuyilapho intambo yesifazane itholakala ngaphakathi. Intambo yesilisa inesiphetho esicijile, kanti intambo yesifazane inesimboli esihambisanayo.
Ukuze kwakhiwe ukuxhumana okuvikelekile, intambo yesilisa ifakwa entanjeni yesifazane bese iqiniswa ngokuyizungezisa ngokwewashi. Njengoba izintambo zihlanganyela, izindawo ezithintekile ziyahlangana, zenze uphawu. Kubalulekile ukuqinisekisa ukuthi izintambo ziqondaniswe kahle ngaphambi kokuqiniswa ukuze kugwenywe ukuwela, okungaholela ekuxhumekeni okuyiphutha.
Izindlela zokufaka ezifanele zibalulekile ekuqinisekiseni ubuqotho nokuphila isikhathi eside koxhumo lwe-NPT. Esinye sezici ezibalulekile zokufaka ukusebenzisa inani elilungile letorque lapho uqinisa uxhumano. Ukuqiniswa kancane kungaholela ekuxhumekeni okuxekethile kanye nokuvuza okungenzeka, kuyilapho ukuqinisa ngokweqile kungalimaza izintambo futhi kulimaze uphawu.
Okunye okucatshangelwayo okubalulekile ukusetshenziswa kwama-thread sealants noma i-tape. Le mikhiqizo isiza ukuthuthukisa uphawu ngokugcwalisa noma yiziphi izikhala noma ukungapheleli emicu. Kubalulekile ukukhetha i-sealant noma itheyiphu ehambisana noketshezi noma igesi ethuthwayo futhi uyigcobe ngendlela efanele ngokwemiyalelo yomkhiqizi.
Ukuhlolwa okuvamile nokugcinwa kokuxhumeka kwe-NPT nakho kubalulekile ukuze kuhlonzwe noma yiziphi izimpawu zokuguga, ukugqwala, noma ukulimala. Noma yikuphi ukuxhuma okonakele noma osekugugile kufanele kushintshwe ngokushesha ukuze kuvinjelwe ukuvuza nokuqinisekisa ukuphepha kohlelo.
Izixhumanisi ze-NPT (National Pipe Tapered) zisetshenziswa kakhulu ezimbonini ezahlukahlukene ngenxa yezinzuzo zazo eziningi. Enye yezinzuzo ezibalulekile zoxhumo lwe-NPT yikhono labo lokuhlinzeka ngokuhlanganyela okuvikelekile nokungavuziyo. Izintambo ezicijile zoxhumo lwe-NPT zenza ukuvala okuqinile, ukuvimbela noma yikuphi ukuvuza koketshezi noma amagesi. Lokhu kwenza uxhumo lwe-NPT lulungele izinhlelo zokusebenza lapho ukuthembeka nokuphepha kubaluleke kakhulu, njengezimboni zamapayipi, uwoyela negesi, nezimboni zamakhemikhali.
Enye inzuzo yoxhumo lwe-NPT ukuguquguquka kwawo nokuhambisana nezinto ezihlukene zamapayipi. Izixhumanisi ze-NPT zingasetshenziswa ngezinhlobonhlobo zezinto ezibonakalayo, ezihlanganisa insimbi, ithusi, nepulasitiki. Lokhu kuvumelana nezimo kuvumela ukuhlanganiswa okungenamthungo kokuxhumeka kwe-NPT kumasistimu amapayipi akhona, kungakhathaliseki ukuthi iyiphi into esetshenzisiwe. Noma ngabe isistimu ye-hydraulic enengcindezi ephezulu noma amanzi anomfutho ophansi, ukuxhumeka kwe-NPT kungathenjelwa kukho ukuze kuhlinzekwe ngokuhlanganyela okuphephile nokuqinile.
Ukuxhumeka kwe-NPT kwaziwa ngokukwazi kwabo ukumelana nokucindezela okuphezulu nezimo zokushisa. Imicu ecijile yoxhumo lwe-NPT ihlinzeka ngokuhlanganyela okuqinile nokuthembekile okungamelana nezimo zokusebenza ezidlulele. Lokhu kwenza uxhumo lwe-NPT lufanele izinhlelo zokusebenza lapho kunesidingo soketshezi olunomfutho ophezulu noma ukudluliswa kwegesi, njengakumasistimu omusi noma izindawo zokuhluza uwoyela. Ukuqina kokuxhumana kwe-NPT kuqinisekisa ukuthi angakwazi ukumelana nezimo ezinzima zezindawo ezifunayo ngaphandle kokuphazamisa ubuqotho belunga.
Ngokungeziwe emandleni abo okusebenza, ukuxhumeka kwe-NPT kunikeza ukusebenza kahle kwezindleko kanye nokufaka kalula uma kuqhathaniswa nezinye izinhlobo zokuxhuma. Ukuxhumeka kwe-NPT kulula ukukufakela, kudinga amathuluzi ayisisekelo kuphela namasu. Lokhu lula kokufaka kuhumushela ekongeni kwesikhathi kanye nezindleko zakho kokubili ukufakwa nokulungiswa kokuqala. Ngaphezu kwalokho, ukuxhumana kwe-NPT kutholakala kalula emakethe, okwenza kube ukukhetha okubiza izindleko zezinhlelo zokusebenza ezahlukahlukene.
Ukuxhumeka kwe-NPT nakho kunenzuzo yokuthi kusetshenziswe kabusha. Ngokungafani nezinye izinhlobo zokuxhuma ezidinga ukushintshwa ngemva kokuhlakazwa, ukuxhumeka kwe-NPT kungahlanganiswa kalula futhi kusetshenziswe kabusha ngaphandle kokuphazamisa amandla abo okuvala. Lokhu akunciphisi nje kuphela izindleko eziphelele zesistimu kodwa futhi kufaka isandla emizamweni yokusimama ngokunciphisa ukumosha.
Izixhumanisi ze-NPT (National Pipe Tapered) zisetshenziswa kakhulu ezimbonini nasezinhlelweni ezahlukahlukene ngenxa yokuguquguquka kwazo nokuthembeka. Enye yezimboni eziyinhloko ezithembele kakhulu ekuxhumekeni kwe-NPT amapayipi. Noma ngabe kusezindaweni zokuhlala noma ezentengiselwano, ukuxhunywa kwe-NPT kuvame ukutholakala ezinhlelweni zamapayipi okuphakelwa kwamanzi, ukuthuthwa kwendle, kanye nendle. Izintambo ezicijile zoxhumo lwe-NPT zihlinzeka ngokuhlanganyela okuvikelekile nokungavuziyo, okuzenza zibe zilungele ukuqinisekisa ukugeleza kwamanzi okushelelayo ezinhlelweni zamapayipi.
Enye imboni lapho ukuxhumana kwe-NPT kuvame ukusetshenziswa khona yimboni yegesi. Izixhumanisi ze-NPT zivame ukusetshenziswa kumapayipi egesi, amamitha egesi, nezinto zikagesi zegesi. Imicu ecijile yokuxhumana kwe-NPT isiza ukudala isivalo esiqinile, ukuvimbela noma yikuphi ukuvuza kwegesi nokuqinisekisa ukuphepha kwesistimu. Lezi zixhumanisi nazo zivame ukutholakala ezinhlelweni zokusabalalisa igesi yemvelo, lapho zinikeza isisombululo esithembekile nesiqinile sokuxhuma amapayipi nokufakwa.
Imboni kawoyela ingomunye umkhakha lapho ukuxhumana kwe-NPT kuthola ukusetshenziswa kabanzi. Kusuka ezindaweni ezihluza uwoyela kuye emisebenzini yokumba, ukuxhumana kwe-NPT kuvamise ukusetshenziswa ngenxa yekhono labo lokusingatha izindawo ezinomfutho ophezulu. Lokhu kuxhumana kusetshenziswa ezinhlelweni ezahlukahlukene embonini kawoyela, okuhlanganisa amapayipi kawoyela, ama-wellheads, namathangi okugcina uwoyela. Imicu ecijile yokuxhumana kwe-NPT ivumela ukufakwa kalula futhi inikeze ngokuhlanganyela okuqinile nokungavuzi, okubenza bafaneleke izimo ezinzima zemboni kawoyela.
Ukuxhumeka kwe-NPT kulungele kakhulu kokubili izicelo zokuhlala nezokuhweba ngenxa yezinzuzo zakho eziningi. Ezilungiselelweni zokuhlala, ukuxhumana kwe-NPT kuvame ukusetshenziswa ezinhlelweni zamapayipi zokuxhuma amapayipi, okokufakwayo, nezinto ezilungiswayo. Imicu ecijile yokuxhumana kwe-NPT ivumela ukujoyina okuqinile futhi okuvikelekile, okuqinisekisa ukuthi akukho ukuvuza noma ukumoshakala kwamanzi. Lokhu kubalulekile ikakhulukazi ezindaweni zokuhlala lapho ukongiwa kwamanzi kuyinto ehamba phambili. Ukuxhumeka kwe-NPT nakho kuhlinzeka kalula ekufakeni, okuwenza kube yinketho ekhethwayo kubanikazi bezindlu nabasebenza ngamapayipi ngokufanayo.
Kuzinhlelo zokusebenza zentengiso, ukuxhumana kwe-NPT kunikeza izinzuzo ezifanayo. Kungakhathaliseki ukuthi kusezakhiwo zezentengiselwano, izindawo zezimboni, noma ingqalasizinda yomphakathi, ukuxhumana kwe-NPT kusetshenziswa kakhulu ezinhlelweni zamapayipi amanzi. Lokhu kuxhumana kuhlinzeka ngesisombululo esithembekile nesiqinile sokuxhuma amapayipi nokufakwa, ngisho nasezindaweni ezinomfutho ophezulu. Imicu ecijile yokuxhumana kwe-NPT iqinisekisa ukuvala okuqinile, kunciphisa ubungozi bokuvuza kanye nokuqinisekisa ukugeleza kahle kwamanzi noma okunye uketshezi. Ngaphezu kwalokho, ukuxhumana kwe-NPT kutholakala kalula futhi kungabizi, okuwenza kube ukukhetha okusebenzayo kwezicelo zentengiso.
Uxhumo lwe-NPT luhamba phambili ezimweni ezihlukahlukene zokusetshenziswa nezimo, ngenxa yokwakheka nokusebenza okuhlukile. Icala elilodwa elikhethekile lapho uxhumo lwe-NPT lusebenza kahle kakhulu kusezinhlelweni zamanzi. Lokhu kuxhumana kuvamise ukusetshenziswa emigqeni yoketshezi olusebenza ngogesi, lapho ehlinzeka ngokuhlanganyela okuvikelekile nokungavuziyo. Imicu ecijile yokuxhumana kwe-NPT isiza ukuvimbela noma yikuphi ukuvuza koketshezi, iqinisekisa ukusebenza kahle kwesistimu ye-hydraulic. Kungakhathaliseki ukuthi kusemishinini esindayo noma izinhlelo zokusebenza zezimoto, uxhumo lwe-NPT ludlala indima ebalulekile ekugcineni ubuqotho bezinhlelo ezisebenza ngaphansi kwamanzi.
Esinye isimo lapho uxhumo lwe-NPT luhamba phambili kumasistimu womoya. Ukuxhumana kwe-NPT kuvame ukusetshenziswa kuma-compressor komoya, amathuluzi omoya, kanye nezinhlelo zokulawula umoya. Imicu ecijile yokuxhumana kwe-NPT iqinisekisa ukuvala okuqinile, ivimbela noma yikuphi ukuvuza komoya nokugcina amazinga okucindezela afunekayo. Lokhu kuxhumana kuwusizo ikakhulukazi ezimbonini ezifana nezokukhiqiza, ezokwakha, nezezimoto, lapho kusetshenziswa khona amasistimu omoya. Ukuxhumeka kwe-NPT kunikeza isisombululo esithembekile nesisebenzayo sokuxhuma izingxenye ezihlukahlukene zezinhlelo zomoya.
Ngaphezu kwalokho, ukuxhumana kwe-NPT kuvame ukusetshenziswa ezinhlelweni zokunisela. Noma ngabe kungokwezinjongo zezolimo noma ukwakheka kwezwe, ukuxhuma kwe-NPT kunikeza isixazululo esisebenzayo sokuxhuma amapayipi nokufakwa kumasistimu okunisela. Izintambo ezicijile zoxhumo lwe-NPT zivumela ukufakwa kalula futhi zinikeze ngokuhlanganyela okuvikelekile okungamelana nomfutho wamanzi ophezulu ngokuvamile odingekayo ekusetshenzisweni kokunisela. Lokhu kuxhumana kuqinisekisa ukutholakala kwamanzi okungaguquki ezitshalweni noma ezingadini, okugqugquzela ukukhula okunempilo kanye nokusatshalaliswa kwamanzi ngendlela efanele.
Uma kuziwa ekufakeni ukuxhumana kwe-NPT, ukulandela izinyathelo ezifanele kubalulekile ukuze uqinisekise ukuxhumana okuphephile nokungavuziyo. Nansi inkomba yesinyathelo ngesinyathelo ukukusiza ukuthi ufake kahle ukuxhumana kwe-NPT:
Ngaphambi kokuqala inqubo yokufaka, kubalulekile ukulungisa ipayipi nokufaka kahle. Qinisekisa ukuthi kokubili ipayipi nokufaka kuhlanzekile futhi akunanto engcolile, imfucumfucu, noma ukugqwala. Sebenzisa ibhulashi locingo noma i-sandpaper ukuze ususe noma iyiphi insalela futhi udale indawo ebushelelezi yokuxhumeka.
Ukuze ufinyelele uxhumano olungavuzi, kubalulekile ukufaka isivalo esifanele. I-Teflon tape ijwayele ukusetshenziselwa ukuxhumana kwe-NPT njengoba inikeza uphawu oluthembekile. Qala ngokugoqa i-tape ngokuphambene nezintambo, uqinisekise ukumbozwa okuphelele. Faka izingqimba ezimbili kuya kwezintathu ze-tape, uyicindezele ngokuqinile emicu.
Uma i-sealant isisetshenzisiwe, qinisa ngesandla uxhumano. Qala ngokuqondisa imicu bese uqala ukujikisa okufakelayo ukuya epayipini. Sebenzisa isandla sakho ukuze uqinise ukuxhumana ngangokunokwenzeka. Qinisekisa ukuthi ukufakwa kuhambisana kahle futhi kuhlezi phezu kwepayipi.
Ukuze uthole ukucinana okunconyiwe, kubalulekile ukusebenzisa amathuluzi afanelekile okuqinisa okokugcina. Isikrufu sepayipi noma isikrufu esilungisekayo singasetshenziswa ukuze kuqhutshekwe kuqiniswe uxhumano. Kodwa-ke, qaphela ukuthi ungaqini kakhulu, ngoba kungonakalisa izintambo noma kubangele ukuqhekeka okufashisayo.
Ukusebenzisa amathuluzi afanelekile nama-sealant kubalulekile uma kuziwa ekuzuzeni uxhumano lwe-NPT olungavuzi. Nakhu ukuthi kungani kubalulekile:
Ngokusebenzisa amathuluzi alungile nama-sealant, unganciphisa kakhulu ingcuphe yokuvuza nokwehluleka ekuxhumekeni kwe-NPT. I-sealant idala ukuvala okuqinile phakathi kwemicu, ivimbele noma yiluphi uketshezi noma igesi ukuthi ingaphumi. Ukwengeza, ukusebenzisa amathuluzi afanelekile kuqinisekisa ukuthi uxhumano luqiniswa kahle, kunciphisa amathuba okuvuza.
Uxhumo olufakwe kahle lwe-NPT lubalulekile ekuphepheni nasekuthembekeni kwesistimu iyonke. Ukuvuza kokuxhumana kungaholela ezimweni eziyingozi, ikakhulukazi ezimbonini lapho uketshezi oluthuthwayo noma amagesi kuvutha khona noma kunobuthi. Ngokusebenzisa amathuluzi afanelekile nama-sealants, ungaqinisekisa ubuqotho bokuxhumana, ukhuthaze ukuphepha nokuthembeka.
Ukusebenzisa amathuluzi afanele nama-sealants akuvimbi nje ukuvuza kuphela kodwa futhi kunweba ubude bempilo yoxhumo lwe-NPT. Izindlela zokufaka nokulungisa ngendlela efanele zisiza ukunciphisa ukuguga nokudabuka emicu, ukunciphisa ubungozi bokulimala noma ukwehluleka ngokuhamba kwesikhathi. Lokhu kuqinisekisa ukuthi uxhumano luhlala luvikelekile futhi lusebenza isikhathi eside.
Ukuqinisekisa ubude bokuphila koxhumo lwe-NPT, kubalulekile ukulandela izinqubo ezingcono kakhulu zokunakekelwa nokuhlolwa kwazo. Nazi izinqubo ezibalulekile okufanele uzicabangele:
Ukuhlola njalo ukuxhumana kwe-NPT kubalulekile ukuze uhlonze noma yiziphi izimpawu zokuguga, ukonakala, noma ukuvuza. Ukuhlola okubonakalayo kungasiza ekutholeni izinkinga ezifana nokufakwa okuxekethile, ukugqwala, noma ukuqhekeka. Kunconywa ukwenza ukuhlolwa ngezikhathi ezithile noma njengengxenye yeshejuli yokulungisa okujwayelekile.
Ukuhlanza nokugcoba ukuxhumana kwe-NPT kungasiza ukugcina ukusebenza kwazo futhi kuvimbele izinkinga ezinjengokubamba noma ukuqunjelwa. Sebenzisa ama-ejenti okuhlanza afanelekile ukuze ususe noma yikuphi ukungcola noma imfucumfucu emicu. Faka okokugcoba okufanelekile ukuze uqinisekise ukuhlangana okubushelelezi nokuhlakazwa kokuxhumana.
Ukuhlola ngezikhathi ezithile itorque yokuxhumana kwe-NPT kubalulekile ukuze uqinisekise ukuthi kuqiniswe kahle. Ngokuhamba kwesikhathi, ukudlidliza noma ukushintsha kwezinga lokushisa kungabangela ukuxega kokuxhumana. Ngokuhlola i-torque, ungabona noma yikuphi ukufakwa okuxekethile futhi ukuqinise ngokushesha ukuze uvimbele ukuvuza noma ukwehluleka.
Uma noma yiziphi izingxenye zoxhumo lwe-NPT, njengepayipi noma okokufaka, kubonisa izimpawu zokuguga okuphawulekayo noma umonakalo, kubalulekile ukukushintsha ngokushesha. Ukuqhubeka nokusebenzisa izakhi ezigugile kungonakalisa ubuqotho bokuxhumana futhi kwandise ingozi yokuvuza noma ukwehluleka.
Izinhlobo zokuxhuma ze-NPT (National Pipe Tapered) zisetshenziswa kabanzi ezimbonini ezahlukahlukene zokuhlanganisa amapayipi nokufakwa. Nakuba lokhu kuxhumana kwaziwa ngokwethembeka nokuqina, kunezinkinga ezithile nezinselele ezingase ziphakame. Inkinga eyodwa evamile ukuvuza, okungenzeka ngenxa yezizathu ezihlukahlukene ezifana nokufakwa okungafanele, izintambo ezigugile, noma izindawo zokuvala ezilimele. Enye inselelo ukulimala kwentambo okungabangelwa ukuqina, ukugqwala noma ukusebenzisa izinto ezingahambelani. Ukwengeza, ezinye izinkinga ezifana nokugawula intambo, ukungahambi kahle, noma ukuvala uphawu okunganele nakho kungaba nomthelela ekusebenzeni koxhumo lwe-NPT.
Ukuze ubhekane nokuvuza ekuxhumekeni kwe-NPT, kubalulekile ukukhomba kuqala umthombo wokuvuza. Qala ngokuhlola ngokubona ukuxhumana ukuze uthole noma yiziphi izimpawu ezibonakalayo zokuvuza. Uma zingekho izimpawu ezibonakalayo ezikhona, ungasebenzisa isixazululo sokuthola ukuvuza noma amanzi anensipho ukuze uhlole ukuvuza okuncane. Uma umthombo usukhonjiwe, ungathatha izinyathelo ezifanele njengokuqinisa uxhumo, ukufaka esikhundleni sochungechunge olulimele, noma ukufaka kabusha isivalo. Kubalulekile ukuqinisekisa ukuthi izintambo ziqondaniswe kahle futhi izindawo zokuvala zihlanzekile futhi azinayo imfucumfucu ngaphambi kokuhlanganisa kabusha uxhumano.
Uma kukhulunywa ngokulimala kwentambo, ukuvimbela kuyisihluthulelo. Gwema ukuqinisa kakhulu ukuxhumana ngoba kungaholela ekushintshashintsheni kwentambo noma ukukhumula. Sebenzisa i-torque wrench ukuze uqinise ukuxhumeka kuzicaciso ezinconyiwe zomenzi. Uma umonakalo wentambo usuvele wenzekile, kungase kudingeke ukuthi usebenzise amathuluzi okulungisa intambo noma ubuyisele ingxenye eyonakele. Kubalulekile ukusebenzisa izinto ezihambisanayo futhi ugweme ukuhlanganisa izinhlobo ezahlukene zezinsimbi ukuze kugwenywe ukugqwala kwe-galvanic, okungase kwenze imicu ibe buthaka futhi kwehlise ubuqotho bokuxhumana.
Ngaphezu kokuvuza nokulimala kwentambo, ezinye izinkinga ezifana nokugalela intambo, ukungaqondani kahle, noma ukuvala uphawu okunganele nakho kungathinta ukuxhumana kwe-NPT. I-thread galling, eyaziwa nangokuthi i-welding ebandayo, kungenzeka uma izintambo zibamba noma zikhiye ndawonye ngesikhathi sokuhlanganisa. Ukuvimbela lokhu, sebenzisa i-anti-seize compound noma i-lubricant emiculweni ngaphambi kokuhlanganisa. Ukungaqondi kahle kungaxazululwa ngokuqinisekisa ukuthi amapayipi nokufakwa kuhambisana kahle ngaphambi kokuqinisa uxhumano. Ukuvala uphawu okunganele kungaxazululwa ngokusebenzisa isitywini esifanelekile noma itheyiphu nokuqinisekisa ukuthi sisetshenziswa ngendlela efanele.
Yize izinkinga eziningi ezijwayelekile ngoxhumo lwe-NPT zingaxazululwa kusetshenziswa amathiphu okuxazulula inkinga okukhulunywe ngawo ngenhla, kubalulekile ukuqaphela imikhawulo yezixazululo ze-DIY. Izinkinga eziyinkimbinkimbi ezinjengokulimala okukhulu kwentambo, ukuvuza okubanzi, noma izindaba ezinamasistimu abucayi kufanele zixazululwe ochwepheshe abanolwazi ekuxhumekeni kwamapayipi. Ukufuna usizo lochwepheshe kuqinisekisa ukuthi inkinga ixilongwa futhi ixazululwe ngendlela efanele, okunciphisa ubungozi bokulimala okwengeziwe noma izingozi zokuphepha. Ochwepheshe bangaphinde banikeze isiqondiso mayelana nezinqubo zokuvikela zokuvikela futhi bancome izinto ezisetshenziswayo ezifanele noma izingxenye zezinhlelo ezithile zokusebenza.
Uma kuziwa ezinhlotsheni zokuxhuma ze-NPT (National Pipe Tapered), kubalulekile ukuqonda izingozi ezingaba khona uma zingafakwanga noma zinganakekelwa kahle. Enye yezinto eziyinhloko ezikhathazayo ingozi yokuvuza. Ngenxa yokwakheka kwe-tapered yokuxhumeka kwe-NPT, kunethuba eliphezulu lokuvuza uma kuqhathaniswa nezinye izinhlobo zokuxhuma. Lokhu kungaholela ezinkingeni ezihlukahlukene zokuphepha, okuhlanganisa ukungcoliswa kwemvelo, ukulimala kwemishini, ngisho nokulimala komuntu siqu.
Ukufakwa okungalungile koxhumo lwe-NPT kungaholela ekulimaleni kwentambo noma ukuvala uphawu okwanele, okungaholela ekuvuzeni. Imicu yokuxhumana kwe-NPT ijwayele ukulimala uma kusetshenziswa amandla amaningi ngesikhathi sokufakwa. Kubalulekile ukusebenzisa amathuluzi namasu afanele ukuze uqinisekise ukulingana okufanele futhi ugweme ukulimala kwentambo. Ukwengeza, ukusebenzisa ama-thread sealant noma itheyiphu eklanyelwe ngqo ukuxhumana kwe-NPT kungasiza ekuvimbeleni ukuvuza nokuqinisekisa ukuxhumana okuphephile.
Enye ingozi ehlobene noxhumo lwe-NPT amandla okugqwala. Uma amapayipi noma izinsimbi zenziwe ngezinto ezingahambelani noma uma zivezwe ezintweni ezibolayo, kungaholela ekuwohlokeni kokuxhumeka ngokuhamba kwesikhathi. Ukugqwala kwenza buthaka ubuqotho bokuxhumana, kukwenze kube lula ukuvuza nokwehluleka. Ukuhlolwa njalo nokunakekelwa kuyadingeka ukuze kubonakale noma yiziphi izimpawu zokugqwala futhi kuthathwe izinyathelo ezifanele zokuvimbela umonakalo owengeziwe.
Ukusebenza noxhumo lwe-NPT kubandakanya ukuphatha amasistimu anengcindezi ephezulu, okudinga ukubambelela ngokuqinile ezinyathelweni zokuphepha. Okokuqala nokubaluleke kakhulu, kubalulekile ukuqinisekisa ukuthi uhlelo lucindezelekile ngaphambi kokuzama noma yimuphi umsebenzi wokufaka, ukulungisa, noma ukulungisa. Lokhu kungenziwa ngokuvala ama-valve afanele futhi kudedelwe noma yikuphi ukucindezela okuvalelekile. Ukwehluleka ukucindezela uhlelo kungabangela ukukhishwa kungazelelwe koketshezi olunomfutho ophezulu, okubeka engcupheni enkulu ekuphepheni kwabasebenzi abahilelekile.
Imishini yokuzivikela yomuntu siqu (i-PPE) idlala indima ebalulekile ekuqinisekiseni ukuphepha kwabantu abasebenza ngoxhumo lwe-NPT. Lapho usebenzisana nezinhlelo zokucindezela okukhulu, kubalulekile ukugqoka i-PPE efanele, njengezibuko zokuphepha, amagilavu, nezingubo zokuzivikela. Izibuko zokuphepha zivikela amehlo ekuvuzeni okungase kube khona noma izifutho, kuyilapho amagilavu enikeza isivikelo sesandla emiphethweni ecijile noma ezintweni ezonakalisayo. Izingubo ezivikelayo, njengamakhava noma amaphinifa, zingavikela umzimba ekuchaphazeni okungase kube khona noma ukuchitheka.
Ngokungeziwe ku-PPE, kubalulekile ukulandela izindlela zokuphatha ezifanele lapho usebenza noxhumo lwe-NPT. Lokhu kuhlanganisa ukusebenzisa amathuluzi afanele omsebenzi kanye nokusebenzisa inani elifanele letorque ngesikhathi sokufakwa. Ukuqinisa kakhulu kungalimaza izintambo, kuyilapho ukuqiniswa kancane kungabangela ukuvuza. Kubalulekile ukwenza ibhalansi efanele ukuze uqinisekise ukuxhumana okuphephile nokungavuziyo.
Ukuhlola nokunakekelwa okuvamile kubalulekile ukuze kutholakale noma yiziphi izingozi zokuphepha ezingaba khona ezihlobene noxhumo lwe-NPT. Lokhu kuhlanganisa ukuhlola izimpawu zokuvuza, ukugqwala, noma ukulimala kochungechunge. Noma yiziphi izinkinga kufanele zixazululwe ngokushesha ukuze kugwenywe ukuwohloka okwengeziwe futhi kuqinisekiswe ukuphepha okuqhubekayo nokwethembeka kohlelo.
Sengiphetha, ukuxhumana kwe-NPT kusetshenziswa kabanzi ezimbonini nasezinhlelweni ezahlukahlukene zamajoyinti azo avikelekile futhi angavuzi. Banikeza izinzuzo ezifana nokuhambisana nezinto ezihlukene zamapayipi, ukumelana nokucindezela okuphezulu nezimo zokushisa, nokusebenza kahle kwezindleko. Ukufakwa nokunakekelwa okufanele kubalulekile ukuze uthole ukuxhumana okuthembekile, futhi amathiphu okuxazulula izinkinga angasiza ekuxazululeni izinkinga ezivamile. Ukuqonda ukucatshangelwa kokuphepha okuhlotshaniswa noxhumo lwe-NPT nakho kubalulekile ukuze kuqinisekiswe ukusebenza okuphephile kwamasistimu.
Q: Uyini umehluko phakathi kokuxhumana kwe-NPT ne-NPTF?
A: Ukuxhumana kwe-NPT (National Pipe Thread) kanye ne-NPTF (National Pipe Thread Fuel) kokubili kuyintambo yamapayipi acishiwe. Umehluko omkhulu ukuthi i-NPTF inobubanzi bempande yentambo enkulu kanye ne-diameter ye-thread crest encane uma kuqhathaniswa ne-NPT. Lo mehluko uvumela uxhumo lwe-NPTF ukuthi ludale uphawu oluqinile, okulwenza lufaneleke kakhulu izinhlelo zokusebenza ezidinga uxhumano olungavuzi.
Q: Ingabe ukuxhumana kwe-NPT kungasetshenziswa kukho kokubili igesi noketshezi?
A: Yebo, ukuxhumana kwe-NPT kungasetshenziselwa kokubili izinhlelo zokusebenza zegesi noketshezi. Kodwa-ke, kubalulekile ukucabangela izidingo ezithile zesicelo futhi uqinisekise ukuthi izinto ezikhethiwe kanye nama-sealants ahambisana noketshezi oluhlosiwe noma igesi.
Q: Ingabe ukuxhumana kwe-NPT kuyahambisana namapayipi epulasitiki?
A: Ukuxhumeka kwe-NPT ngokuvamile kuyahambisana namapayipi epulasitiki. Kodwa-ke, kubalulekile ukucabangela uhlobo oluthile lwepulasitiki olusetshenziswayo futhi uqinisekise ukuthi uxhumano olukhethiwe lwe-NPT luhambisana nalokho okubalulekile. Amanye amapulasitiki angase adinge ama-adaptha akhethekile noma okokufakwayo ukuze kuqinisekiswe ukuxhumana okufanele nokuvikelekile.
