A butterfly valvechinhu chinodzora mvura. Inoshandisa 1/4 kutenderera kutenderera kudzora kuyerera kwe media mune akasiyana maitiro. Kuziva zvinhu uye kushanda kwezvikamu kwakakosha. Inobatsira kusarudza vheji yakakodzera yekushandiswa kwakananga. Chikamu chimwe nechimwe, kubva kumutumbi wevharuvhu kusvika kune hunde yevhavha, ine basa chairo. Izvo zvakagadzirwa nezvinhu zvakakodzera kushandiswa. Dzese dzinoita basa rakakosha mukuona kushanda kwakanaka uye kugadzirisa. Kunzwisisa kwakakodzera kwezvikamu izvi kunogona kuvandudza mashandiro ehurongwa uye hupenyu hwebasa. Butterfly mavharuvhu anoshandiswa muminda yakawanda nekuda kwekusiyana-siyana kwawo. Maindasitiri akaita sekurapa kwemvura, kugadzira makemikari, uye chikafu nechinwiwa anoshandisa mavharuvhu aya. Butterfly mavharuvhu anogona kubata kudzvinyirirwa kwakasiyana uye tembiricha. Saka, ivo vanokodzera ese ari maviri akakwirira uye akaderera-inoda nharaunda. Mukuwedzera, kudhura kwakaderera uye nyore kwekuisa kunoita kuti zvioneke pakati pemavharuvhu akawanda.
1. Butterfly Valve Chikamu Zita: Muviri wevhavha
Muviri weshavishavi igoko. Inotsigira valve disc, chigaro, stem, uye actuator. Thebutterfly vharafu muviriinoshandiswa kubatanidza pombi kuti vharafu irambe iri panzvimbo yayo. Uyewo, muviri wevhavha unofanirwa kumira zvakasiyana-siyana uye mamiriro ezvinhu. Saka, dhizaini yayo yakakosha pakuita kwayo.
Valve muviri zvinhu
Zvinhu zvemuviri wevharuvhu zvinoenderana nepombi uye media. Zvinoenderanawo nemhoteredzo.
Izvi zvinotevera zvinhu zvinowanzoshandiswa.
-Kanda simbi, rudzi rwakachipa rwesimbi butterfly valve. Iyo ine yakanaka kupfeka kusagadzikana.
-Ductile iron, kana ichienzaniswa nesimbi yakakandwa, ine simba riri nani, kupfeka kusagadzikana uye nani ductility. Saka yakakodzera kune general maindasitiri application.
-Simbi isina ngura, ine kugadzikana kukuru uye kusagadzikana kwekuora. Zviri nani kune zvinwiwa zvinoparadza uye kushandiswa kwehutsanana.
-WCB,nekuoma kwayo kwepamusoro uye simba, inokodzera kushandiswa kwepamusoro-kudzvinyirira, kwepamusoro-kupisa. Uye iri weldable.
2. Butterfly Valve Chikamu Zita: Valve disc
Thebutterfly valve disciri pakati pemuviri wevharuvhu uye inotenderera kuvhura kana kuvhara shavishavi. Nyaya yacho inosangana zvakananga nemvura. Saka, inofanirwa kusarudzwa zvichibva pane zvemukati zvinhu. Zvishandiso zvakajairika zvinosanganisira sphere nickel plating, naironi, rabha, simbi isina tsvina, uye aluminium bronze. Iyo yakaonda dhizaini yevhavha disc inogona kuderedza kuyerera kwekudzivirira, nekudaro kuchengetedza simba nekuvandudza kushanda kwevhavhavhavhavhavha.
vharafu disc mhando.
Valve disc mhando: Kune akati wandei marudzi evharuvhu discs kune akasiyana maapplication.
-Concentric valve discinopindirana nepakati pemuviri wevharuvhu. Zviri nyore uye zvinodhura.
-Double eccentric valve discine rubber strip yakadzikwa pamucheto weplate yevharuvhu. Inogona kuvandudza kushanda kwekuvhara.
Iyo katatu eccentric discisimbi. Inonamira zvirinani uye inopfeka zvishoma, saka yakanaka kune yakakwirira-kumanikidza nharaunda.
3. Butterfly Valve Chikamu Zita: Dzinde
Iyo hunde inobatanidza disc bhokisi actuator. Inotumira kutenderera uye simba rinodiwa kuvhura kana kuvhara vharafu yeshavishavi. Ichi chikamu chinoita basa rakakosha mukushanda kwemakanika kwevharuvhu yeshavishavi. Iyo stem inofanira kumira yakawanda torque uye kushushikana panguva yekushanda. Saka, zvinodiwa zvenyama zvinodiwa zvakakwirira.
The valve stem material
Dzinde racho rinowanzogadzirwa nezvinhu zvakasimba, sesimbi isina tsvina uye aluminium bronze.
-Simbi isina ngurayakasimba uye inoshingirira mukuora.
-Aluminium bronzeanoipikisa zvakanaka kwazvo. Vanovimbisa kuvimbika kwenguva refu.
-Zvimwe zvinhuinogona kusanganisira carbon steel kana alloys. Vanosarudzwa nokuda kwezvinodiwa zvekushanda.
4. Butterfly Valve Chikamu Zita: Seat
Chigaro chiri muvhavhavhavha inoumba chisimbiso pakati pe disc nemuviri wevharuvhu. Kana vharuvhu yakavharwa, disc inosvina chigaro. Izvi zvinodzivirira kuvuza uye kuchengetedza iyo pipeline system yakasimba.
Thebutterfly valve seatinofanira kumira zvakasiyana-siyana zvekumanikidzika uye tembiricha. Sarudzo yezvigaro zvechigaro zvinoenderana neiyo chaiyo application. Rubber, silicone, Teflon uye mamwe elastomers isarudzo dzakajairika.
Mhando dzezvigaro zvevhavha
Kune marudzi akati wandei ezvigaro zvekusangana neakasiyana maapplication. Mhando dzinonyanya kuzivikanwa ndeidzi:
-Soft valve zvigaro: Yakagadzirwa nerabha kana Teflon, inochinjika uye inosimba. Zvigaro izvi zvakanakira kune yakaderera-kudzvanywa, yakajairwa-tembiricha maapplication ayo anoda tight shutoff.
-All simbi vharafu zvigaro: dzakagadzirwa nesimbi, sesimbi isina tsvina. Vanogona kumira kutonhora kwepamusoro uye matambudziko. Zvigaro zvevharuvhu izvi zvakakodzerwa nemamiriro ekunze anoda kusimba.
-Multi-layer valve zvigaro: Yakagadzirwa negraphite nesimbi yakaiswa panguva imwe chete. Vanosanganisa maitiro ezvigaro zvevharuvhu zvinyoro uye zvigaro zvesimbi valve. Saka, Ichi chigaro chakasiyana-siyana chinowana chiyero pakati pekushanduka uye simba. Aya mavharuvhu zvigaro ndezvepamusoro-kuita sealing applications. Vanogona kuvhara kunyange kana vakasakara.
5. Actuator
The actuator ndiyo nzira inoshandisa butterfly valve. Inoshandura ndiro yevhavha kuti ivhure kana kuvhara kuyerera. Iyo actuator inogona kuve yemanyorero (mubato kana worm giya) kana otomatiki (pneumatic, magetsi, kana hydraulic).
Mhando uye zvinhu
-Bata:Yakagadzirwa nesimbi kana simbi yakakandwa, inokodzera butterfly mavharuvhu eDN≤250.
- Worm gear:Inokodzera butterfly mavharuvhu emhando ipi neipi, kuchengetedza basa uye mutengo wakaderera. Magearbox anogona kupa mukana wemuchina. Vanoita kuti zvive nyore kushandisa mavharuvhu makuru kana epamusoro-soro.
- Pneumatic actuators:shandisa mweya wakamanikidzwa kushanda mavharuvhu. Kazhinji ivo vanogadzirwa nealuminium kana simbi.
- Electric actuators:shandisa mota dzemagetsi uye anoiswa mudzimba dzakagadzirwa nezvinhu zvakaita sealuminium kana simbi isina tsvina. Kune marudzi akakosha uye akangwara. Misoro yemagetsi isingapindi mvura uye inoputika inogonawo kusarudzwa kune dzakakosha nharaunda.
Hydraulic actuators:shandisa hydraulic mafuta kushanda butterfly mavharuvhu. Nhengo dzavo dzakagadzirwa nesimbi kana zvimwe zvinhu zvakasimba. Yakakamurwa kuita imwechete-kuita uye kaviri-kuita pneumatic misoro.
6. Makwenzi
Mabhushu anotsigira uye anoderedza kupokana pakati pezvikamu zvinofamba, semazita evharuvhu nemiviri. Vanovimbisa kushanda zvakanaka.
Zvishandiso
- PTFE (Teflon):kukwesha kwakaderera uye kwakanaka kwemakemikari kuramba.
-Bronzi:simba rakakwirira uye rakanaka kupfeka kuramba.
7. Gaskets uye O-mhete
Gaskets uye O-mhete zvinhu zvekuisa chisimbiso. Vanodzivirira kuvuza pakati pezvikamu zvevharuvhu uye pakati pemavharuvhu nemapaipi.
Zvishandiso
- EPDM:inowanzoshandiswa mumvura uye muutsi.
-NBR:yakakodzera kushandiswa kwemafuta nemafuta.
- PTFE:Yakakwira makemikari kuramba, anoshandiswa mune aggressive makemikari application.
- Viton:Inozivikanwa nekudzivisa kwayo kutonhora kwakanyanya uye makemikari ane hutsinye.
8. Mabhaudhi
Mabhoti anobata zvikamu zvevharuvhu yeshavishavi pamwechete. Ivo vanovimbisa kuti vharafu yakasimba uye inodonha-isingabvumirwe.
Zvishandiso
- Simbi isina ngura:Inofarirwa nekuda kwekusagadzikana kwayo uye simba.
- Carbon simbi:Inoshandiswa munzvimbo dzisinganyanyi kuodza.
9. Pini
Mapini anobatanidza diski kune hunde, achibvumira kufamba kwakatsetseka kutenderera.
Zvishandiso
- Simbi isina ngura:Corrosion resistance uye simba guru.
-Bronzi:Pfeka kuramba uye yakanaka machinability.
10. Mbabvu
Iyo mbabvu inopa humwe hutsigiro hwekugadzirisa kune disc. Vanogona kudzivirira deformation pasi pekumanikidzwa.
Zvishandiso
-Simbi:High simba uye kuoma.
-Aluminium:Inokodzera maapplication akareruka.
11. Linings uye machira
Liners uye machira anochengetedza muviri wevharuvhu uye zvikamu kubva mukuora, kukukurwa, uye kupera.
- Rubber linings:Zvakadai seEPDM, NBR, kana neoprene, inoshandiswa mukuora kana kukuvadza zvikumbiro.
- PTFE coating:makemikari kuramba uye kuderera kwakaderera.
12. Nzvimbo zviratidzo
Chiratidzo chechigaro chinoratidza nzvimbo yakazaruka kana yakavharwa yevhavha. Izvi zvinobatsira kure kana otomatiki masisitimu kutarisa nzvimbo yevharuvhu.
Types
Mechanical:iri nyore mechanical indicator yakasungirirwa kune valve stem kana actuator.
- Zvemagetsi:sensor