Mavharuvhu eshavishavi akasimbandiyo mhando yevharuvhu yemashavishavi inoshandiswa zvakanyanya mumapaipi eindasitiri. Vanoshandisa zvinhu zvinonamira zvakaita serabha senzvimbo yekuvhara, vachivimba ne "kusimba kwezvinhu" uye "kumanikidzwa kwechimiro" kuti vasvike pakushanda zvakanaka kwekuvhara.
Chinyorwa chino hachingotauri chete nezvemaumbirwo, mashandisirwo, uye zvinhu, asi chinozviongororawo kubva paruzivo rwakajairika kusvika pakufunga zvakadzama.
1. Kunzwisisa Kwekutanga Mavharuvhu Eshavishavi Akasimba (Tsananguro Pfupi)
1.1 Chimiro Chekutanga
Muviri weVharuvhu:Kazhinji mhando yewafer, mhando yelug, kana mhando yeflanged.
Dhisiki reVharuvhu:Ndiro yesimbi yakatenderera inodzvanya chigaro cherabha kana chakavharwa kuti chigadzire chisimbiso.
Chigaro cheVharuvhu:Yakagadzirwa nezvinhu zvinonamira zvakaita seNBR/EPDM/PTFE/Rabha Yakanamirwa, ichishanda pamwe chete nedhisiki revharuvhu.
Hunde yevharuvhu:Kazhinji inoshandisa dhizaini yemugodhi mumwe chete kana miviri.
Mushandi wekugadzirisa:Mubato, midziyo yehonye, yemagetsi, yepneumatic, nezvimwewo.
1.2 Zvinhu Zvakajairika
Kuvhara kunowanzoita kuti pasave nekubuda mvura zvachose.
Mutengo wakaderera uye mhando dzakasiyana dzemashandisirwo.
Inonyanya kushandiswa mumaindasitiri emagetsi ane simba rakaderera kusvika pakati nepakati akadai semvura, mhepo inotonhodza, HVAC, uye makemikari emagetsi.
2. Pfungwa dzisiri dzechokwadi nezve mavharuvhu eResilient Butterfly
2.1 Chinhu chikuru chekusimbisa rabha kugona kushanda
Vanhu vazhinji vanotenda kuti: "Zvigaro zvakasimba zvinoenderana nerabha yakasimba pakusimbisa."
Chinhu chaicho chekusimbisa ndeichi:
Muviri wevharuvhu + daro repakati pemudzi wevharuvhu + ukobvu hwedhisiki yevharuvhu + nzira yekuisa chigaro chevharuvhu
Pamwe chete gadzirai "nzvimbo yekumanikidzwa inodzorwa".
Zvichitaurwa zviri nyore:
Rabha haifanirwe kunge yakasununguka zvakanyanya kana kuti yakasimba zvakanyanya; inovimba ne "sealing compression zone" inodzorwa nekushandisa machining accuracy.
Sei izvi zvichikosha?
Kusakwana kwekudzvanya: Vharuvhu inodonha kana yavharwa.
Kudzvanya kwakanyanya: Kusimba kwakanyanya, kukwegura kwerabha nguva isati yakwana.
2.2 Ko dhisiki rakapfava rinoshanda zvakanaka here risingadyi simba zvakanyanya?
Maonero akajairika: Madhisiki evharuvhu akarongeka anogona kuderedza kurasikirwa kwekumanikidzwa.
Izvi ndezvechokwadi zvichienderana nedzidziso ye "fluid mechanics", asi hazvishande zvachose pakushandiswa chaiko kweResilient Butterfly Valves.
Chikonzero:
Chinhu chikuru chinokonzera kurasikirwa kwekumanikidzwa mumavharuvhu emabhatafura haisi chimiro chedhisiki revharuvhu, asi "mhedzisiro yemugero we micro-channel" inokonzerwa nekukwenya kwerabha rechigaro chevharuvhu. Dhisiki revharuvhu rakatetepa rinogona kutadza kupa kumanikidzwa kwakakwana, zvichikonzera mitsetse yekuvhara isina kuenderera mberi uye kubuda kwemvura.
Dhisiki revharuvhu rakapfava rinogona kukonzera kushushikana kwakanyanya parabha, zvichideredza hupenyu hwaro.
Saka, dhizaini yemavharuvhu eshavishavi akapfava inotarisa "kugadzikana kwemutsara wekuvhara" pane kugadzirisa zviri nyore.
2.3 Mavharuvhu eshavishavi akapfava ane chimiro chepakati chete
Zvinotaurwa paindaneti kuti mavharuvhu eshavishavi anoshamisa anofanira kushandisa zvisimbiso zvesimbi zvakasimba.
Zvisinei, ruzivo rwemainjiniya epasi rese runoratidza kuti:
Kusachinja-chinja kaviri kunovandudza hupenyu hwemavharuvhu eResilient Butterfly.
Chikonzero:
Kusapindirana kaviri: Dhisiki revharuvhu rinongobata rabha chete panguva yekupedzisira yekuvhara kwe2-3°, zvichideredza zvakanyanya kukweshana.
Kuderedza simba remagetsi, zvichiita kuti pave nesarudzo yeactuator isingadhuri zvakanyanya.
2.4 Chinhu chikuru chinofanira kufungwa nezvacho nezvechigaro cherabha i "zita rezvinhu"*
Vazhinji vashandisi vanongotarisa pane:
EPDM
NBR
Viton (FKM)
Asi chinonyanya kukanganisa hupenyu hwemunhu ndeichi:
2.4.1 Kuomarara kwemahombekombe:
Semuenzaniso, kuomarara kweEPDM paShore A hakusi kwekuti "kana yakapfava zviri nani." Kazhinji, 65-75 ndiyo nzvimbo yakakodzera yekuyera, zvichiita kuti pasave nekudonha kwemvura kana paine kumanikidzwa kwakaderera (PN10-16).
Zvakanyanya kupfava: Simba shoma asi rinobvaruka nyore nyore. Munzvimbo dzine kumanikidzwa kwakanyanya (>2 MPa) kana munzvimbo dzisina kugadzikana, rabha yakapfava inodzvanywa zvakanyanya, zvichikonzera kushanduka kwe extrusion. Uyezve, tembiricha yakakwira (>80°C) inowedzera kupfavisa rabha.
Zvakaoma: Zvakaoma kuvhara, kunyanya mumasisitimu ane simba shoma (<1 MPa), apo rabha haigone kumanikidzwa zvakakwana kuti iite nzvimbo isina mhepo, zvichiita kuti ibude mvura shoma.
2.4.2 Kupisa kweVulcanization nenguva yekuporesa
Kupisa kweVulcanization nenguva yekuporesa zvinodzora cross-link yemaketani erabha, zvichikanganisa zvakananga kugadzikana kwechimiro chenetwork uye kushanda kwenguva refu. Nguva yakajairika ndeye 140-160°C, maminetsi 30-60. Tembiricha yakakwira kana yakaderera zvakanyanya inotungamira mukupora kusina kuenzana uye kukurumidza kukwegura. Kambani yedu inowanzo shandisa multi-stage vulcanization (pre-curing pa140°C, inoteverwa ne post-curing pa150°C). 2.4.3 Seti Yekudzvanya
Kudzvanywa kwesimbi kunoreva huwandu hwekushanduka-shanduka kunogara kuripo uko rabha inosangana nako pasi pekumanikidzwa nguva dzose (kazhinji 25%-50% kudzvanywa, kwakaedzwa pa70°C/22h, ASTM D395) uye hakugone kupora zvizere. Kukosha kwakakodzera kweseti yekudzvanywa i<20%. Kukosha uku ndiko "kudzikamisa" kwekuvhara vharuvhu kwenguva refu; kudzvanywa kwakanyanya kwenguva refu kunotungamira kumaburi asingaperi, zvichigadzira nzvimbo dzekubuda.
2.4.4 Simba reKusimba
A. Simba reKubata (kazhinji >10 MPa, ASTM D412) ndiro dambudziko guru rinogona kumiriswa nerabha risati rapwanyika, uye rinokosha pakudzivirira kupera uye kuramba kubvaruka kwechigaro chevharuvhu. Huremu hwerabha nekabhoni dema zvinosarudza simba rekubata kwechigaro chevharuvhu.
Mumavharuvhu eshavishavi, rinoramba kuchekwa nemucheto wedhisiki revharuvhu uye kukanganiswa nemvura.
2.4.5 Njodzi huru yakavanzika yemavharuvhu eshavishavi ndeyekubuda kwemvura.
Mutsaona dzeinjiniya, kudonha kwemvura kazhinji hakusi dambudziko guru, asi kuwedzera kwesimba remagetsi.
Chinonyanya kukonzera kukundikana kwesystem ndeichi:
Kukwira kamwe kamwe kwesimba remagetsi → kukuvara kwegiya rehonye → kudonha kweactuator → kuvharika kwevharuvhu
Sei torque ichingoerekana yawedzera?
- Kukura kwechigaro chevharuvhu nekupisa kwakanyanya
- Kunyudzwa kwemvura uye kuwedzera kwerabha (kunyanya EPDM yemhando yepasi)
- Kushanduka kwechigarire kwerabha nekuda kwekumanikidzwa kwenguva refu
- Kugadzirwa kusina kunaka kwemukana uri pakati pehunde yevharuvhu nedhisiki yevharuvhu
- Chigaro chevharuvhu hachina kupwanyika zvakanaka mushure mekuchinjwa
Saka, "torque curve" chiratidzo chakakosha zvikuru.
2.4.6 Kurongeka kwekugadzirisa muviri wevharuvhu hakusi chinhu chisina kukosha.
Vanhu vazhinji vanotenda zvisirizvo kuti kuvhara mavharuvhu eshavishavi akapfava kunonyanya kuenderana nerabha, saka zvinodiwa pakunyatsogadzira mavharuvhu hazvina kunyanya kukwira.
Izvi hazvina kururama zvachose.
Kururama kwemuviri wevharuvhu kunokanganisa:
Kudzika kwemugero wechigaro chevharuvhu → kutsauka kwekumanikidzwa kwechisimbiso, zvichikonzera kusarongeka kuri nyore panguva yekuvhura nekuvhara.
Kusakwana kwekukwenya kwemucheto wemugero → kukwenya panguva yekuisa chigaro chevharuvhu
Chikanganiso pakati pedhisiki revharuvhu → kubata kwakanyanya kwakaitwa panzvimbo
2.4.7 Chinhu chikuru che "full rabber/PTFE butterfly lined valve" idhisiki revharuvhu.
Chinhu chikuru cherabha kana kuti PTFE yakagadzirwa nejira rePTFE hachisi chekuti "ive nenzvimbo yakakura inoita seinodzivirira ngura," asi kuti ivhare nzira kuti isapinde muma micro-channels ari mukati mevharuvhu. Matambudziko mazhinji nema butterfly valves asingadhuri haasi ekuti rabha haina kunaka, asi ndeaya:
"Mupata wakaita sewedge" uri panosangana chigaro chevharuvhu nemuviri hauna kugadziriswa zvakanaka.
Kuora kwemvura kwenguva refu → kutsemuka kwematombo → kusviba kwerabha uye kuzvimba
Danho rekupedzisira nderekukundikana kwechigaro chevharuvhu panzvimbo yacho.
3. Sei mavharuvhu eResilient Butterfly achishandiswa pasi rese?
Kunze kwemutengo wakaderera, zvikonzero zvitatu zvakadzama ndeizvi:
3.1. Kushivirira kukanganisa kwakanyanya
Zvichienzaniswa nezvisimbiso zvesimbi, zvisimbiso zverabha, nekuda kwekusimba kwazvo, zvine kutsungirira kwakasimba pakukanganisa kwekuisa uye kukanganisika kudiki.
Kunyangwe zvikanganiso zvekugadzira mapaipi, kutsauka kweflange, uye kushushikana kwebhoti kusina kufanana zvinotorwa nekuomarara kwerabha (zvechokwadi, izvi zvishoma uye hazvidiwi, uye zvichakonzera kukuvara kwepaipi nevharuvhu nekufamba kwenguva).
3.2. Kugona kushanduka zvakanyanya kumanikidzwa kwesystem
Zvisimbiso zverabha hazvina "kusimba" sezvisimbiso zvesimbi; zvinongoerekana zvavhara tambo yekuvhara kana paine kuchinja-chinja kwekumanikidzwa.
3.3. Mutengo wakaderera wehupenyu hwese
Mavharuvhu eshavishavi akavharwa zvakasimba anogara kwenguva refu, asi mutengo uye mutengo weactuator zvakakwirira.
Kana tichienzanisa, mari yekudyara nekugadzirisa maResilient Butterfly Valves inodhura zvishoma.
4. Mhedziso
Kukosha kweMavharuvhu eBhabhatafura Akasimbahaisi "kungovhara zvinyoro nyoro" chete
Mavharuvhu eshavishavi akapfava angaita seari nyore, asi zvigadzirwa zvakanaka kwazvo zvinotsigirwa nepfungwa dzakasimba dzeinjiniya, dzinosanganisira:
Dhizaini chaiyo yenzvimbo yekudzvanya
Kushanda kwerabha kwakadzorwa
Kufananidza kwechimiro chemuviri wevharuvhu nehunde
Maitiro ekugadzira chigaro chevharuvhu
Kutarisira torque
Kuedzwa kwehupenyu hwese
Izvi ndizvo zvinhu zvikuru zvinosarudza mhando, kwete "zita rezvinhu" uye "chimiro chechitarisiko".
CHERECHEDZA:* DATA inoreva iyi webhusaiti:https://zfavalves.com/blog/key-factors-that-determine-the-quality-of-soft-seal-butterfly-valves/
Nguva yekutumira: Zvita-09-2025