1 Ukubuka Konke
I-valve ye-butterfly iyithuluzi elibalulekile ohlelweni lwamapayipi okuphakelwa kwamanzi kanye nokukhipha amanzi. Ngokuthuthuka kobuchwepheshe bezimboni, izidingo ezahlukene zifakwa phambili esakhiweni nasekusebenzeni kwe-valve ye-butterfly. Ngakho-ke, uhlobo, izinto kanye nefomu lokuxhuma kufanele kukhethwe ngokufanele ngokuya ngezimo zokusebenza ngesikhathi sokuklama nokukhetha.
I-valve ye-butterfly iyithuluzi elibalulekile ohlelweni lwamapayipi okuphakelwa kwamanzi kanye nokukhipha amanzi. Ngokuthuthuka kobuchwepheshe bezimboni, izidingo ezahlukene zifakwa phambili esakhiweni nasekusebenzeni kwe-valve ye-butterfly. Ngakho-ke, uhlobo, izinto kanye nefomu lokuxhuma kufanele kukhethwe ngokufanele ngokuya ngezimo zokusebenza ngesikhathi sokuklama nokukhetha.
2 Umklamo
2.1 Isakhiwo
Ingxenye yokuvala (ipuleti levemvane) yevalvu yevevali iphakathi nendawo, futhi ithonya layo ekumelaneni nokugeleza kufanele licatshangelwe ekwakhiweni.
2.1 Isakhiwo
Ingxenye yokuvala (ipuleti levemvane) yevalvu yevevali iphakathi nendawo, futhi ithonya layo ekumelaneni nokugeleza kufanele licatshangelwe ekwakhiweni.
Ngokuphathelene nesakhiwo sepuleti le-butterfly le-valve ye-butterfly enobubanzi obukhulu, i-AWWA C504 (i-American Water Supply Engineering Association Standard) ibeka ukuthi ipuleti le-butterfly akufanele libe nezimbambo eziphambeneyo, futhi ubukhulu balo akufanele bube ngaphezu kobubanzi obuphindwe izikhathi ezingu-2.25 besiqu se-valve.
Indawo engena ngamanzi kanye nendawo ephuma amanzi yepuleti le-butterfly kufanele ihambisane kahle.
Izikulufo zangaphakathi azikwazi ukuphuma ngaphandle kwepuleti lebhabhathane, ukuze zingandisi indawo ebheke emanzini.
2.2 Uphawu lwerabha
Indawo engena ngamanzi kanye nendawo ephuma amanzi yepuleti le-butterfly kufanele ihambisane kahle.
Izikulufo zangaphakathi azikwazi ukuphuma ngaphandle kwepuleti lebhabhathane, ukuze zingandisi indawo ebheke emanzini.
2.2 Uphawu lwerabha
Ngezinye izikhathi impilo yesevisi yevalvu yebhabhathane yerabha imfushane, okuhlobene nekhwalithi yerabha kanye nobubanzi bendawo yokuvala. Indandatho yokuvala yevalvu yebhabhathane evalwe ngerabha kufanele yenziwe ngezinto zerabha zekhwalithi ephezulu, futhi imithethonqubo yenqubo kufanele ilandelwe ngesikhathi sokubumba okucindezelwe. Izinga lokushisa le-vulcanization akufanele likhuliswe ngokungahleliwe, futhi isikhathi singafinyezwa, ngaphandle kwalokho kuzokwenza kalula indandatho yokuvala iguge futhi iqhekeke. Ubuso bokuvala bensimbi obuhambisana nendandatho yokuvala irabha kufanele bube nobubanzi obanele, ngaphandle kwalokho indandatho yokuvala irabha akulula ukuyishumeka. Ngaphezu kwalokho, ukubekezelela ukuma kanye nesikhundla, ukulingana, ukunemba, ukushelela, kanye nokuqina kwendandatho yokuvala yomzimba wevalvu kanye nepuleti lebhabhathane nakho kuthinta impilo yesevisi yendandatho yokuvala irabha.
2.2 Ukuqina
Ukuqina kuyinkinga ebalulekile ekwakhiweni kwamavalvu evemvane, okuhlobene nezici ezifana namapuleti evemvane, imiphini yamavalvu kanye nokuxhumana.
Ukuqina kuyinkinga ebalulekile ekwakhiweni kwamavalvu evemvane, okuhlobene nezici ezifana namapuleti evemvane, imiphini yamavalvu kanye nokuxhumana.
(1) Usayizi womshafti wevalvu Usayizi womshafti wevalvu uchazwe ku-AWWA C504. Uma usayizi womshafti wevalvu ungahlangabezani nezidingo, kungase kube nokuqina okwanele, ukuvuza kwe-reverse seal, kanye ne-torque enkulu yokuvula. Ukuqina komshafti kuhlobene ne-1/EI, okungukuthi, ukuthuthukisa ukuqina nokunciphisa inkinga yokuguquguquka, kufanele siqale ngokwandisa i-EI. I-E iyi-modulus yokuqina. Ngokuvamile, umehluko wensimbi awumkhulu, futhi izinto ezikhethiwe azinawo umthelela omkhulu ekuqineni. I yi-moment of inertia futhi ihlobene nosayizi wesigaba somshafti. Usayizi womshafti wevalvu ngokuvamile ubalwa ngokwenhlanganisela yokugoba kanye ne-torsion. Akuhlobene nje kuphela ne-torque, kodwa futhi ikakhulukazi nomzuzu wokugoba. Ikakhulukazi, umzuzu wokugoba we-valve yebhabhathane enobubanzi obukhulu mkhulu kakhulu kune-torque.
(2) Ukuhlanganiswa kwemigodi yeshaft Inguqulo endala ye-AWWA C504 ibeka ukuthi ishaft yevalvu yebhathane iyishaft eqondile. Ngemva kwenguqulo ka-1980, kwaphakanyiswa ukuthi ingenziwa ibe yimishaft emibili emifushane. Ngokusho kwe-AWWA C504 kanye ne-GB12238, ubude obuhlanganisiwe bomshaft kanye nembobo kufanele bube yi-1.5d. Igebe (inani le-C) phakathi komphetho womzimba wevalvu kanye nokuphela kokusekela kwepuleti lebhathane ku-axial dimension yevalvu yebhathane yaseJapan icacisiwe, okuvame ukuhlobene nosayizi wobubanzi, obuphakathi kuka-25 no-45mm, okuwukunciphisa ibanga phakathi kwezisekeli zeshaft (inani le-C), ngaleyo ndlela kuncishiswe umzuzu wokugoba kanye nokuguquguquka komshaft.
(3) Isakhiwo sepuleti le-Butterfly Isakhiwo sepuleti le-butterfly sinobuhlobo obuqondile nokuqina, ngakho-ke ngaphezu kwesimo sepuleti eliyisicaba, ikakhulukazi lenziwa ngesimo sebhodwe noma isimo se-truss. Ngamafuphi, siwukwandisa umzuzu wokungaqini kwesigaba ukuze kwandiswe ukuqina.
(4) Isakhiwo somzimba wevalvu Kukhona nezinkinga zokuqina ekwakhiweni komzimba wevalvu yebhabhathane enobubanzi obukhulu. Ngokuvamile, kunezimbambo zendandatho kanye nezimbambo ze-cross. Eqinisweni, izimbambo ze-cross zandisa ukuzinza kuphela futhi akufanele zibe ziningi kakhulu. Eziyinhloko yizimbambo zendandatho. Uma ungangeza izimbambo ezimise okwe-∩, kuzoba wusizo kakhulu ekuqineni, kodwa kunenkinga yokungakhi kahle.
2.3 Amabheringi azigcobayo
Iningi noma yonke ingcindezi ephakathi nendawo epuletini le-butterfly (engemuva) idluliselwa ku-bearing ngokusebenzisa i-shaft, ngakho-ke i-bearing idlala indima ebaluleke kakhulu. Amanye ama-valve e-butterfly angaphandle alula futhi awusizo, futhi ama-valve amancane angaphendulwa ngomunwe owodwa, kuyilapho amanye ama-valve e-butterfly asekhaya esindayo. Ngaphezu kwe-coaxiality, ukulingana, ukunemba kokucubungula, ukuqeda kanye nekhwalithi yokupakisha, kuyinto ebalulekile kakhulu ukugcotshwa kwezinto ze-sleeve. Izinga le-AWWA C504 liphakamisa ukuthi i-shaft sleeve noma i-bearing efakwe emzimbeni we-valve kufanele ibe yizinto ezizigcobayo, futhi i-shaft sleeve inenkinga yokunciphisa ukungqubuzana kanye nokugcotshwa, futhi ukugqwala akuvunyelwe. Ngaphandle kwe-shaft sleeve, noma ngabe i-valve shaft iyinsimbi engagqwali, umzimba we-valve unezinkinga zokugqwala nokunamathela. Ukusetshenziswa kwama-bushings nakho kungandisa ukuqina.
Iningi noma yonke ingcindezi ephakathi nendawo epuletini le-butterfly (engemuva) idluliselwa ku-bearing ngokusebenzisa i-shaft, ngakho-ke i-bearing idlala indima ebaluleke kakhulu. Amanye ama-valve e-butterfly angaphandle alula futhi awusizo, futhi ama-valve amancane angaphendulwa ngomunwe owodwa, kuyilapho amanye ama-valve e-butterfly asekhaya esindayo. Ngaphezu kwe-coaxiality, ukulingana, ukunemba kokucubungula, ukuqeda kanye nekhwalithi yokupakisha, kuyinto ebalulekile kakhulu ukugcotshwa kwezinto ze-sleeve. Izinga le-AWWA C504 liphakamisa ukuthi i-shaft sleeve noma i-bearing efakwe emzimbeni we-valve kufanele ibe yizinto ezizigcobayo, futhi i-shaft sleeve inenkinga yokunciphisa ukungqubuzana kanye nokugcotshwa, futhi ukugqwala akuvunyelwe. Ngaphandle kwe-shaft sleeve, noma ngabe i-valve shaft iyinsimbi engagqwali, umzimba we-valve unezinkinga zokugqwala nokunamathela. Ukusetshenziswa kwama-bushings nakho kungandisa ukuqina.
2.4 Ukuxhumeka komgodi kanye nepuleti lebhabhathane
I-shaft kanye nepuleti le-butterfly le-valve ye-butterfly enobubanzi obuncane kungcono kuxhunywe ngokhiye noma nge-spline, futhi uxhumano lwe-shaft ye-polygonal noma uxhumano lwe-pin lungasetshenziswa. I-shaft kanye nepuleti le-butterfly le-valve ye-butterfly enobubanzi obukhulu kakhulu kuxhunywe ngokhiye noma ngamaphini e-taper. Njengamanje, ama-shaft nama-disc engeziwe axhunywe ngamaphini. Iphini yokuxhuma yonakele ngaphansi kwezimo zokusebenza ezinzima. Lokhu kungenxa yezizathu zokukhiqiza. Phakathi kwazo, ukunemba kwe-anastomosis akukuhle, usayizi wephini awufanele, ubulukhuni bephini abwanele noma izinto azifaneleki, njll., kufanele kunakwe. I-shaft kanye nepuleti le-butterfly le-valve ye-butterfly enkulu kungaxhunywa ngendlela ekhethekile.
I-shaft kanye nepuleti le-butterfly le-valve ye-butterfly enobubanzi obuncane kungcono kuxhunywe ngokhiye noma nge-spline, futhi uxhumano lwe-shaft ye-polygonal noma uxhumano lwe-pin lungasetshenziswa. I-shaft kanye nepuleti le-butterfly le-valve ye-butterfly enobubanzi obukhulu kakhulu kuxhunywe ngokhiye noma ngamaphini e-taper. Njengamanje, ama-shaft nama-disc engeziwe axhunywe ngamaphini. Iphini yokuxhuma yonakele ngaphansi kwezimo zokusebenza ezinzima. Lokhu kungenxa yezizathu zokukhiqiza. Phakathi kwazo, ukunemba kwe-anastomosis akukuhle, usayizi wephini awufanele, ubulukhuni bephini abwanele noma izinto azifaneleki, njll., kufanele kunakwe. I-shaft kanye nepuleti le-butterfly le-valve ye-butterfly enkulu kungaxhunywa ngendlela ekhethekile.
2.5 Ubude besakhiwo
Ubude besakhiwo sevalvu yevelufa bukhula bube uchungechunge olufushane, kodwa indlela enjalo kumele iqaphe. Ngoba ubude besakhiwo bufushane kakhulu ukuthi bungathinta amandla. Izindinganiso zomhlaba wonke zibeke ubude besakhiwo sochungechunge olufushane lwamavalvu evelufa, kodwa ubude besakhiwo sevalvu enomfutho ophezulu akufanele bufinyezwe, kungenjalo kuzoba nezinkinga, ikakhulukazi ezintweni ezibuthakathaka njengensimbi ephonswe.
Ubude besakhiwo sevalvu yevelufa bukhula bube uchungechunge olufushane, kodwa indlela enjalo kumele iqaphe. Ngoba ubude besakhiwo bufushane kakhulu ukuthi bungathinta amandla. Izindinganiso zomhlaba wonke zibeke ubude besakhiwo sochungechunge olufushane lwamavalvu evelufa, kodwa ubude besakhiwo sevalvu enomfutho ophezulu akufanele bufinyezwe, kungenjalo kuzoba nezinkinga, ikakhulukazi ezintweni ezibuthakathaka njengensimbi ephonswe.
INortech ingenye yabakhiqizi bama-valve ezimboni abahamba phambili eShayina abanesitifiketi sekhwalithi se-ISO9001.
Isikhathi sokuthunyelwe: Agasti-20-2021