1. Chii chinonzi pneumatic butterfly valve?
A pneumatic butterfly valve ivharuvhu yekota-turn inoshandiswa kudzora kana kuparadzanisa kuyerera kwemvura mupombi. Inosanganisira denderedzwa disc (inowanzonzi "disc") yakasungirirwa patsinde, iyo inotenderera mukati memuviri wevhavha. "Pneumatic" inoreva iyo actuation michina, iyo inoshandisa mweya wakadzvanywa kushanda vharuvhu, ichigonesa kure kana otomatiki kudzora.
A pneumatic butterfly valve inogona kukamurwa kuita zvinhu zviviri zvakakosha: iyo pneumatic actuator uye butterfly valve.
· Butterfly valve body: Inosanganisira muviri wevharuvhu, disc (disc), dzinde, uye chigaro. Iyo dhisiki inotenderera ichitenderedza hunde kuti ivhure nekuvhara vharuvhu.
· Pneumatic actuator: Inoshandisa mweya wakadzvanywa sesosi yemagetsi, kutyaira piston kana vane kuburitsa mutsara kana kutenderera kufamba.
Zvikamu Zvikuru
*Butterfly Valve:
- Muviri Wevhavha: Imba inogara disc uye inobatanidza kune pombi.
- Disc (disc): Indiro yakafuratira kana yakasimudzwa zvishoma inodzora kuyerera. Kana yakabatwa yakaenzana negwara rekuyerera, valve inovhura; kana yakabatwa perpendicular, inovhara.
- Stem: Tsvimbo yakabatana nedhisiki inotumira simba rekutenderera kubva kune actuator.
- Zvisimbiso uye zvigaro: Ita shuwa kuvhara kwakasimba uye kudzivirira kuvuza.
*Actuator
- Pneumatic actuator: Kazhinji piston kana diaphragm mhando, inoshandura kudzvinyirirwa kwemhepo kuita mechaniki kufamba. Inogona kuita kaviri-kuita (kumanikidza kwemhepo kune zvese kuvhura nekuvhara) kana imwechete-kuita (mhepo kune imwe nzira, chitubu chekudzoka).
2. Operating Principle
Kushanda kwepneumatic butterfly vharafu inzira yakasungwa ye "compressed air actuation.→actuator actuation→disc rotation kudzora kuyerera.
2.1. Actuation process:
- Mhepo yakamanikidzwa kubva kune yekunze sosi (senge compressor kana control system) inopihwa kune pneumatic actuator.
- Muchibatiso chinobata kaviri, mhepo inopinda pane imwe chiteshi ichitenderedza dzinde revharuvhu richienda newachi (kureva kuti, kuvhura vharuvhu), yopinda mune chimwe chiteshi kuti itenderere newachi. Izvi zvinogadzira kufamba kwemutsara mupiston kana diaphragm, iyo inoshandurwa kuita 90-degree kutenderera nerack-and-pinion kana Scotch-yoke mechanism.
- Mune imwechete-acting actuator, mweya wekumanikidza unosundira piston pachirimo kuti uzarure vharafu, uye kuburitsa mhepo kunobvumira chitubu kuti chivhare otomatiki (kutadza-yakachengeteka dhizaini).
2.2. Kushanda kwevhavha:
- Sezvo actuator inotenderera tsinde yevhavha, disc inotenderera mukati memuviri wevhavha.
- Vhura Position: Iyo disc inofanana neinoyerera nzira, ichideredza kuramba uye kubvumira kuzara kuyerera kuburikidza nepombi. - Yakavharwa chinzvimbo: Iyo disc inotenderera 90 madhigirii, perpendicular kuyerera, ichivharira ndima uye chisimbiso pakatarisana nechigaro.
- Nzvimbo yepakati inokwanisa kuyerera, kunyange mavharuvhu e butterfly akanyanya kukodzera ku-off service pane kurongeka chaiko nekuda kwemaitiro avo asina kuyerera.
2.3. Kudzora uye Mhinduro:
- Iyo actuator inowanzo kupetwa ne solenoid valve kana chinzvimbo chekutonga chaiko kuburikidza nemagetsi masaini.
-Sensor inogona kupa mhinduro yevhavhavha kuitira kuti ive nechokwadi chekushanda mune otomatiki masisitimu.
3. Single-Acting uye Double-Acting
3.1 Kaviri-Actuator (Hapana Chirimo Kudzoka)
Iyo actuator ine makamuri maviri episton anopikisana. Mhepo yakamanikidzwa inodzorwa nevharuvhu ye solenoid, ichichinjana pakati pe "kuvhura" uye "kuvhara" makamuri:
Kana mweya wakatsikirirwa uchipinda mukamuri "inovhurika", inosaidzira piston, zvichiita kuti dzinde revharuvhu ritenderere wachi (kana kutarisana newachi, zvichienderana nekugadzirwa), iro rinotenderedza disc kuvhura pombi.
Kana mhepo yakamanikidzwa ichipinda mukamuri "yekuvhara", inosundira piston kune yakatarisana, zvichiita kuti dzinde revharuvhu ritenderere disc rinopesana newachi, richivhara pombi. Zvimiro: Kana mhepo yakamanikidzwa ikarasika, disc inoramba iri munzvimbo yayo yazvino ("kukundikana-yakachengeteka").
3.2 Single-Acting Actuator (ine Spring Return)
Iyo actuator inongova nekamuri imwe yekupinza mhepo, ine chitubu chekudzoka kune rimwe divi:
Kana mhepo ichiyerera: Mhepo yakamanikidzwa inopinda mukamuri yekupinza, ichikunda simba rechirimo kusundira piston, zvichiita kuti disc itenderere kune "yakavhurika" kana "yakavharwa" chinzvimbo;
Kana mhepo yarasika: Simba rechitubu rinosunungurwa, richisundira piston kumashure, zvichiita kuti diski idzokere kune yakagadziriswa "nzvimbo yekuchengetedza" (kazhinji "yakavharwa", asi inogonawo kugadzirwa kuti "yakazaruka").
Zvimiro: Iyo ine "yakundikana-yakachengeteka" basa uye inokodzera kushandiswa muzvishandiso zvinoda matanho ekuchengetedza, seaya anosanganisira zvinopisa, zvinoputika, uye zvine muchetura media.
4. Zvakanakira
Pneumatic butterfly mavharuvhu akakodzera kukurumidza kushanda, kazhinji achingoda kota kutendeuka, achiaita akakodzera maindasitiri akadai sekuchenesa mvura, HVAC, uye kugadzirisa makemikari.
-Kurumidza kupindura nguva nekuda kwepneumatic actuation.
-Mutengo wakaderera uye wakareruka kugadzirisa zvichienzaniswa nemagetsi kana hydraulic dzimwe nzira.
- Compact uye lightweight dhizaini.