Iivalvu zebhabhathane eziqinileyozezona ntlobo zevalvu zebhabhathane ezisetyenziswa kakhulu kwiipayipi zemizi-mveliso. Zisebenzisa izinto ezithambileyo ezifana nerabha njengomphezulu wokutywina, zixhomekeke "ekuqineni kwezinto" kunye "nokucinezelwa kwesakhiwo" ukuze zifezekise ukusebenza kokutywina.
Eli nqaku alizisi nje kuphela isakhiwo, ukusetyenziswa, kunye nezixhobo, kodwa likwahlalutya ukususela kulwazi oluqhelekileyo ukuya kwingqiqo enzulu.
1. Ukuqonda Okusisiseko ngeeValve zeButterfly eziQinisekayo (Inkcazo emfutshane)
1.1 Ulwakhiwo oluSisiseko
Umzimba weValve:Ngokwesiqhelo uhlobo lwe-wafer, uhlobo lwe-lug, okanye uhlobo lwe-flanged.
Idiski yeValve:Ipleyiti yesinyithi esijikelezayo esicinezela isihlalo serabha xa sivaliwe ukuze senze isitywino.
Isihlalo seValve:Yenziwe ngezinto ezithambileyo ezifana ne-NBR/EPDM/PTFE/Rubber Lined, esebenza kunye nediski yevalvu.
Isiqu seValve:Ngokuyintloko isebenzisa uyilo lwe-shaft enye okanye i-shaft ephindwe kabini.
Umchwethezi:Isiphatho, izixhobo zemibungu, zombane, zomoya, njl.njl.
1.2 Iimpawu Eziqhelekileyo
Inqanaba lokutywina lidla ngokufikelela ekungavuzini nto.
Ixabiso eliphantsi kunye noluhlu olubanzi lwezicelo.
Isetyenziswa kakhulu kwiinkqubo zoxinzelelo oluphantsi ukuya koluphakathi ezifana namanzi, umoya opholileyo, i-HVAC, kunye namashishini eekhemikhali ezilula.
2. Iingcamango ezingachanekanga malunga neeValve zeButterfly eziQinisekayo
2.1 Eyona nto iphambili ekutywineni kukuqina kwerabha
Abantu abaninzi bakholelwa ukuba: "Izihlalo ezizinzileyo zixhomekeke ekuqineni kwerabha ukuze zitywinwe."
Eyona nto ibalulekileyo yokutywina yile:
Umzimba wevalvu + umgama wesiqu sevalvu + ubukhulu bediski yevalvu + indlela yokufaka isihlalo sevalvu
Kunye ukudala "indawo yoxinzelelo elawulwayo".
Kalula nje:
Irabha ayinakukhululeka kakhulu okanye iqine kakhulu; ixhomekeke "kwindawo yokucinezela yokutywina" elawulwa kukuchaneka komatshini.
Kutheni oku kubalulekile?
Ukucinezelwa okunganelanga: Ivalvu iyavuza xa ivaliwe.
Uxinzelelo olugqithisileyo: I-torque ephezulu kakhulu, ukuguga kwangaphambili kwerabha.
2.2 Ngaba i-disc shape elungelelanisiweyo igcina amandla kancinci?
Imbono eqhelekileyo: Iidiski zeevalvu ezicwangcisiweyo zinokunciphisa ukulahleka koxinzelelo.
Oku kuyinyani ngokwethiyori ethi "fluid mechanics", kodwa akusebenzi ngokupheleleyo ekusetyenzisweni kweeResilient Butterfly Valves.
Isizathu:
Eyona nto ibangela ukulahleka koxinzelelo kwiivalvu zebhabhathane asikokuma kwediski yevalvu, kodwa "yimpembelelo ye-micro-channel tunnel" ebangelwa kukucutheka kwerabha yesihlalo sevalvu. Idiski yevalvu xa incinci kakhulu inokungaphumeleli ukunika uxinzelelo olwaneleyo loqhagamshelwano, nto leyo enokubangela ukuba imigca yokuvala ingaqhubeki kunye nokuvuza.
Idiski yevalvu elungelelanisiweyo inokubangela iindawo ezibukhali zoxinzelelo kwirabha, nto leyo enciphisa ubomi bayo.
Ngoko ke, uyilo lweevalvu zebhabhathane ezithambileyo lubeka phambili "ukuzinza kwemigca yokutywina" kunokulungisa.
2.3 Iivalvu zebhabhathane ezihlala phantsi ezithambileyo zinesakhiwo esiphakathi kuphela
Kudla ngokuthiwa kwi-intanethi ukuba iivalvu zeebhabhathane ezingaqhelekanga kufuneka zisebenzise izitywino zesinyithi eziqinileyo.
Nangona kunjalo, amava obunjineli bokwenyani abonisa ukuba:
Ukungaguquguquki kabini kuphucula kakhulu ubomi beResilient Butterfly Valves.
Isizathu:
Ukungangqinelani kabini: Idiski yevalvu iqhagamshelana nerabha kuphela ngexesha lokugqibela le-2-3° lokuvala, nto leyo enciphisa kakhulu ukungqubana.
I-torque ephantsi, nto leyo ekhokelela ekukhetheni i-actuator engabizi kakhulu.
2.4 Eyona nto iphambili ekufuneka iqwalaselwe kwisihlalo serabha "ligama lezinto ezibonakalayo"*
Uninzi lwabasebenzisi lugxila kuphela ku:
I-EPDM
I-NBR
IViton (FKM)
Kodwa into echaphazela ubomi bomntu kukuba:
2.4.1 Ukuqina konxweme:
Umzekelo, ubulukhuni be-EPDM ye-Shore A abuthethi ukuba "okukhona ithambile kokukhona ingcono." Ngokwesiqhelo, i-65-75 yeyona ndawo ifanelekileyo yokulinganisela, ifikelela kwi-zero leak xa uxinzelelo luphantsi (PN10-16).
Ithambile kakhulu: I-torque ephantsi kodwa ikrazuka lula. Kwiincopho zoxinzelelo oluphezulu (>2 MPa) okanye kwiindawo ezixineneyo, irabha ethambileyo icinezelwe kakhulu, nto leyo ebangela ukuguquguquka kwe-extrusion. Ngaphezu koko, amaqondo obushushu aphezulu (>80°C) ayayithambisa ngakumbi irabha.
Inzima kakhulu: Kunzima ukuyivala, ingakumbi kwiinkqubo ezinoxinzelelo oluphantsi (<1 MPa), apho irabha ingenakucinezelwa ngokwaneleyo ukwenza ujongano olungangeni moya, nto leyo ekhokelela ekuvuzeni kancinci.
2.4.2 Ubushushu beVulcanization kunye nexesha lokunyanga
Ubushushu be-Vulcanization kunye nexesha lokuphilisa lilawula ukudityaniswa kweentambo zerabha zeemolekyuli, okuchaphazela ngokuthe ngqo ukuzinza kwesakhiwo senethiwekhi kunye nokusebenza kwexesha elide. Uluhlu oluqhelekileyo yi-140-160°C, imizuzu engama-30-60. Amaqondo obushushu aphezulu kakhulu okanye aphantsi kakhulu akhokelela ekugugeni okungalinganiyo kunye nokwaluphala ngokukhawuleza. Inkampani yethu ngokubanzi isebenzisa i-vulcanization enamanqanaba amaninzi (ngaphambi kokupholisa kwi-140°C, kulandele i-post-curing kwi-150°C). 2.4.3 Iseti yoxinzelelo
Iseti yoxinzelelo ibhekisa kumlinganiselo wokuguqulwa okusisigxina okwenziwa yirabha phantsi koxinzelelo oluqhubekayo (ngesiqhelo yi-25%-50% yoxinzelelo, oluvavanywe kwi-70°C/22h, i-ASTM D395) kwaye alunakubuyela ngokupheleleyo. Ixabiso elifanelekileyo leseti yoxinzelelo yi-<20%. Eli xabiso "liyi-bottleneck" yokuvala ivalvu ixesha elide; uxinzelelo oluphezulu lwexesha elide lukhokelela kwizithuba ezingapheliyo, okwenza iindawo zokuvuza.
2.4.4 Amandla okuThamba
A. Amandla okuThanda (ngesiqhelo >10 MPa, ASTM D412) lolona xinzelelo luphezulu irabha enokulunyamezela ngaphambi kokuba iqhekezeke, kwaye lubalulekile ekuchaseni ukuguguleka kunye nokuxhathisa ukukrazuka kwesihlalo sevalvu. Umxholo zerabha kunye nomlinganiselo omnyama wekhabhoni kumisela amandla okuThanda kwesihlalo sevalvu.
Kwiivalvu zebhabhathane, iyamelana nokuchetywa ngumphetho wediski yevalvu kunye nokuchaphazeleka kolwelo.
2.4.5 Eyona ngozi ifihlakeleyo yeevalvu zeebhabhathane kukuvuza.
Kwiingozi zobunjineli, ukuvuza akusoloko kuyingxaki enkulu, kodwa kunoko kukwanda kwe-torque.
Eyona nto ikhokelela ekungasebenzi kakuhle kwenkqubo yile:
Ukunyuka ngamandla kwe-torque ngequbuliso → umonakalo wegiya yempethu → ukukhubeka kwe-actuator → ukuxinana kwevalvu
Kutheni i-torque inyuka ngequbuliso?
- Ukwandiswa kwesihlalo sevalvu ngobushushu obuphezulu
- Ukufunxwa kwamanzi kunye nokwandiswa kwerabha (ingakumbi i-EPDM ekumgangatho ophantsi)
- Ukuguquguquka okungapheliyo kwerabha ngenxa yokucinezelwa kwexesha elide
- Uyilo olungalunganga lomsantsa phakathi kwesiqu sevalvu kunye nediski yevalvu
- Isihlalo sevalvu asiphulwanga kakuhle emva kokutshintshwa
Ngoko ke, "i-torque curve" sisalathisi esibaluleke kakhulu.
2.4.6 Ukuchaneka komatshini wokulungisa umzimba wevalvu akubalulekanga.
Abantu abaninzi bakholelwa ngempazamo ukuba ukutywinwa kweevalvu zebhabhathane ezithambileyo kuxhomekeke kakhulu kwirabha, ngoko ke iimfuno zokuchaneka komatshini womzimba wevalvu aziphezulu.
Oku akulunganga kwaphela.
Ukuchaneka komzimba wevalvu kuchaphazela:
Ubunzulu bomjelo wesihlalo sevalvu → ukuphambuka kokucinezelwa kokutywina, okubangela ukungalungelelani kakuhle ngexesha lokuvula nokuvala.
Ukungatshazwa ngokwaneleyo komphetho we-groove → ukukrwela ngexesha lokufakelwa kwesihlalo sevalvu
Impazamo kumgama osembindini wediski yevalvu → uqhagamshelwano olugqithisileyo olubekwe kwindawo ethile
2.4.7 Umongo we "valvu zebhabhathane ezifakwe irabha/PTFE" yidiski yevalvu.
Isiseko sesakhiwo esinerabha epheleleyo okanye i-PTFE asikokuba "sinendawo enkulu ebonakala ingenakugqwala," kodwa kukuthintela i-medium ukuba ingangeni kwiindlela ezincinci ngaphakathi komzimba wevalvu. Iingxaki ezininzi ngeevalvu zebhabhathane ezingabizi kakhulu azibangelwa kumgangatho werabha ophantsi, kodwa kunoko:
"Isithuba esifana ne-wedge" kwindawo ekudibana kuyo isihlalo sevalvu nomzimba asijongwanga kakuhle.
Ukukhukuliseka kolwelo ixesha elide → ukuqhekeka okuncinci → ukudumba kwerabha
Inyathelo lokugqibela kukusilela kwesihlalo sevalvu kwindawo ethile.
3. Kutheni iiValve zeButterfly ezihlala ziqinile zisetyenziswa kwihlabathi liphela?
Ngaphandle kwexabiso eliphantsi, izizathu ezintathu ezinzulu zezi:
3.1. Ukunyamezelana kweziphene okuphezulu kakhulu
Xa kuthelekiswa nezitywino zesinyithi, izitywino zerabha, ngenxa yokuguquguquka kwazo okugqwesileyo, zinokunyamezela okukhulu ukuphambuka kofakelo kunye nokuguquguquka okuncinci.
Kwaneempazamo zokufakelwa kwepayipi, ukuphambuka kweflange, kunye noxinzelelo lwebholiti olungalinganiyo zifunxwa bubuthambile berabha (kakade ke, oku kunqongophele kwaye akunqweneleki, kwaye kuya kubangela umonakalo othile kumbhobho kunye nevalvu ekuhambeni kwexesha).
3.2. Eyona ndlela ingcono yokulungelelanisa nokuguquguquka koxinzelelo lwenkqubo
Izitywino zerabha azikho "ziqinileyo" njengezitywino zesinyithi; zibuyisela ngokuzenzekelayo umgca wokutywina xa uxinzelelo lutshintshatshintsha.
3.3. Elona xabiso liphantsi kakhulu lomjikelo wobomi
Iivalvu zebhabhathane ezivalwe ngokuqinileyo zihlala ixesha elide, kodwa iindleko kunye neendleko ze-actuator ziphezulu.
Xa kuthelekiswa, iindleko zotyalo-mali kunye nokugcinwa kweeResilient Butterfly Valves zibiza kakhulu.
4. Isiphelo
Ixabiso leIivalvu zebhabhathane eziqinileyoayisiyonto "yokuvala ethambileyo" nje kuphela
Iivalvu zebhabhathane ezitywiniweyo ezithambileyo zisenokubonakala zilula, kodwa iimveliso ezigqwesileyo ngokwenene zixhaswa yi-logic eqinileyo yobunjineli, kuquka:
Uyilo oluchanekileyo lwendawo yokucinezelwa
Ukusebenza kwerabha okulawulwayo
Ukuthelekiswa kwejometri yomzimba wevalvu kunye nesiqu
Inkqubo yokuhlanganisa isihlalo sevalvu
Ulawulo lweTorque
Uvavanyo lomjikelo wobomi
Ezi zizinto eziphambili ezimisela umgangatho, hayi "igama lezinto ezibonakalayo" kunye "nesakhiwo senkangeleko".
QAPHELA:* I-DATA ibhekisa kule webhusayithi:https://zfavalves.com/blog/key-factors-that-determine-the-quality-of-soft-seal-butterfly-valves/
Ixesha leposi: Disemba-09-2025