Nhanganyaya kune Valve Actuators

Valve Actuators

Valve actuators vanosarudzwa zvichienderana nenhamba yezvinhu zvinosanganisira torque inodiwa kuti ishandise vharafu uye kudiwa kwe otomatiki actuation. Mhando dzema actuators anosanganisira manual handwheel, manual lever, yemagetsi mota, pneumatic, solenoid, hydraulic piston, uye self-actuated. Ese ma actuators kunze kwemanual handwheel uye lever anochinjika kune otomatiki actuation.

Manual, Fixed, uye Hammer Actuators
Manual actuators inokwanisa kuisa valve mune chero chinzvimbo asi haibvumire otomatiki kushanda. Iyo inonyanya kuzivikanwa mhando yemagetsi actuator ndeye handwheel. Rudzi urwu runosanganisira mavhiri emaoko akaiswa pahunde, hammer handwheels, uye mavhiri emaoko akabatana nedzinde kuburikidza nemagiya.

Handwheels Yakagadziriswa kuStem
Sezvinoratidzwa mumufananidzo pane mavhiri erudyi akaiswa kune hunde anopa chete mechanic mukana wevhiri. Kana mavharuvhu aya akafumurwa kune tembiricha yepamusoro yekushandisa, kusungirirwa kwevharuvhu kunoita kuti kushanda kunetse.

Hammer Handwheel
Sezvinoratidzwa pamufananidzo, hammer handwheel inofamba yakasununguka nechikamu chekutendeuka kwayo uye yobva yarovera nebhegi pane rimwe vhiri. Gumbo rechipiri rinosungirirwa pahunde yevharuvhu. Negadziriro iyi, vharuvhu inogona kuvharwa kuti ivharwe zvakasimba kana kuvhurika kana yakavharwa.

Manually-Inoshanda Gearbox

Kana mamwe mamechanic akanakira ari mavharuvhu anoshandiswa nemaoko, bhoneti yevharuvhu inoiswa nemisoro yegiya inofambiswa nemaoko sezvakaratidzwa mumufananidzo. Chipanera chakakosha kana vhiri reruoko rakasungirirwa papinion shaft rinobvumira munhu mumwe chete kushandisa vharafu apo vanhu vaviri vangangodiwa pasina mukana wegiya. Nekuda kwekuti kutendeuka kwakati wandei kwepinion kunodiwa kugadzira kutendeuka kumwechete kwehunde yevharuvhu, nguva yekushanda yemavharuvhu mahombe yakareba zvakanyanya. Iko kushandiswa kweanotakurika emhepo mota akabatana nepinion shaft inoderedza nguva yekushanda kwevharuvhu.

Manually-Inoshanda Gearbox

Kana mamwe mamechanic akanakira ari mavharuvhu anoshandiswa nemaoko, bhoneti yevharuvhu inoiswa nemisoro yegiya inofambiswa nemaoko sezvakaratidzwa mumufananidzo. Chipanera chakakosha kana vhiri reruoko rakasungirirwa papinion shaft rinobvumira munhu mumwe chete kushandisa vharafu apo vanhu vaviri vangangodiwa pasina mukana wegiya. Nekuda kwekuti kutendeuka kwakati wandei kwepinion kunodiwa kugadzira kutendeuka kumwechete kwehunde yevharuvhu, nguva yekushanda yemavharuvhu mahombe yakareba zvakanyanya. Iko kushandiswa kweanotakurika emhepo mota akabatana nepinion shaft inoderedza nguva yekushanda kwevharuvhu.

Magetsi Motor Actuators

Magetsi emagetsi anobvumidza bhuku, semi-otomatiki, uye otomatiki kushanda kwevhavha. Mota dzinoshandiswa zvakanyanya kuvhurika-kuvhara mabasa, kunyangwe ichichinjika kumisikidza vharafu kune chero nzvimbo yekuvhura sekuratidzwa mumufananidzo uri pazasi. Iyo mota inowanzoita, inodzoserwa, yakakwira yekumhanyisa mhando yakabatana kuburikidza nechitima chegiya kudzikisa kumhanya kwemota uye nekudaro kuwedzera torque pahunde. Kutungamira kwemota kutenderera kunotarisisa kutungamira kwedisiki kufamba.
Iyo yemagetsi actuation inogona kuita semi-otomatiki, sekunge mota yatangwa neiyo control system. A handwheel, iyo inogona kubatanidzwa kuchitima chegiya, inopa manyore kushanda kwevhavha. Limit switch anowanzo kupihwa kumisa mota otomatiki payakavhurika yakazara uye yakazara yakavharwa mavharuvhu zvinzvimbo. Limit switches inoshandiswa kungave mumuviri nechinzvimbo chevhavha kana torsionally ne torque yemota.

Hydraulic Actuators

Hydraulic actuators inopa semi-otomatiki kana otomatiki chinzvimbo chevharuvhu, yakafanana neiyo pneumatic actuators. Aya ma actuators anoshandisa piston kushandura chiratidzo chekumanikidza kuita valve stem kufamba. Hydraulic fluid inodyiswa kune rimwe divi repiston ukuwo rimwe divi richidirwa kana kubuda ropa. Mvura kana mafuta inoshandiswa se hydraulic fluid. Solenoid mavharuvhu anowanzo shandiswa kudzora otomatiki ye hydraulic fluid kutungamira kungave kuvhura kana kuvhara kwevhavha. Manual mavharuvhu anogonawo kushandiswa kudzora hydraulic fluid; nokudaro kupa semi-otomatiki kushanda.

Self-Actuated Mavharuvhu

Mavharuvhu anozviita anoshandisa system fluid kuisa vharafu. Mavharuvhu okuyamura, mavharuvhu ekuchengetedza, mavharuvhu echeki, uye miteyo yeutsi ndiyo mienzaniso yemavharuvhu anozviitira. Ese mavharuvhu aya anoshandisa humwe hunhu hweiyo system fluid kuita vharafu. Hapana kunobva simba kunze kweiyo system fluid simba rinodiwa pakushanda kwemavharuvhu aya.

Single solenoid valvesanonzi kukundikana kuvhurika kana kutadza kuvharwa zvichienderana nenzvimbo yevhavha ine solenoid de-energized. Kutadza kuvhura solenoid mavharuvhu anovhurwa nekumanikidzwa kwechirimo uye akavharwa nekusimbisa solenoid. Kukundikana kuvharwa solenoid mavharuvhu anovharwa nekumanikidzwa kwechirimo uye anovhurwa nekusimbisa solenoid. Mavharuvhu maviri e-solenoid anowanzo kutadza "sezvazviri." Ndiko kuti, nzvimbo yevharuvhu haishanduki kana ese solenoids ari de-energized.
Kumwe kushandiswa kwemavharuvhu e-solenoid kuri mumasisitimu emhepo seaya anoshandiswa kupa mweya kune pneumatic valve actuators. Iwo solenoid mavharuvhu anoshandiswa kudzora mhepo inopihwa kune pneumatic actuator uye nokudaro chinzvimbo cheiyo pneumatic actuated valve.

Kumhanya kweMagetsi eMasimba

Kufunga nezvekuchengetedzwa kwezvirimwa kunoraira kumhanya kwevharuvhu kune mamwe mavharuvhu ane chekuita nekuchengetedza. Ikoko sisitimu inofanirwa kukurumidza kuparadzaniswa kana kuvhurwa, kukurumidza kukurumidza kwevharuvhu kunodiwa. Uko kuvhurika kwevharuvhu kunoguma nejekiseni remvura inotonhora zvishoma kune inopisa system, kuvhura kunononoka kunodiwa kuderedza kupisa kwekupisa. Injiniya dhizaini inosarudza iyo actuator yemavharuvhu ane hukama zvichienderana nekumhanya uye simba zvinodiwa uye kuwanikwa kwesimba kune iyo actuator.

Kazhinji, kukurumidza actuation inopiwa ne hydraulic, pneumatic, uye solenoid actuators. Nekudaro, solenoids haishande kune mavharuvhu makuru nekuti saizi yavo uye simba rinodiwa zvingave zvakawandisa. Zvakare, hydraulic uye pneumatic actuators inoda sisitimu yekupa hydraulic kana pneumatic simba. Iko kumhanya kweiyo actuation mune chero nyaya inogona kusetwa nekuisa yakaringana saizi orifices mu hydraulic kana pneumatic mitsara. Mune zvimwe zviitiko, vharuvhu inovharwa nekumanikidzwa kwechirimo, iyo inopikiswa ne hydraulic kana pneumatic pressure kuchengetedza vharuvhu yakavhurika.

Magetsi emagetsi anopa kukurumidza kuita actuation. Kumhanya chaiko kwevharuvhu kunoiswa nekusanganiswa kwemota kumhanya uye giya reshiyo. Mubatanidzwa uyu unogona kusarudzwa kuti upe yakazara valve kufamba mukati mehupamhi kubva pamasekonzi maviri kusvika kumasekonzi akati wandei.

Valve Position Chiratidzo

Vashandi vanoda kuratidzwa kwenzvimbo yemamwe mavharuvhu kuti abvumire kushanda kwechirimwa zvine ruzivo. Kune mavharuvhu akadaro, nzvimbo yevharuvhu iri kure inoratidza inopiwa nenzira yemwenje yenzvimbo inoratidza kana mavharuvhu akavhurika kana akavharwa. Remote valve chinzvimbo chinoratidza maseketi anoshandisa chinzvimbo chedetector chinonzwa dzinde uye disk chinzvimbo kana actuator chinzvimbo. Imwe mhando yenzvimbo detector ndiyo mechanical limit switch, iyo inoshandiswa mumuviri nekufamba kwevhavha.

Imwe mhando ndeye magineti switch kana ma transformer anonzwa kufamba kwemagineti cores, ayo anoshanda nemuviri nevhavha kufamba.

Chiratidzo chenzvimbo yevharuvhu zvinoreva zvimwe zvinoonekwa zvinoonekwa zvevharuvhu zvinoratidza nzvimbo yevharuvhu. Rising stem valve position inoratidzwa neiyo stem position. Mavharuvhu asingasimuke dzimwe nguva ane madiki madiki anonongedzera ayo anoshandiswa nevhavha actuator panguva imwe chete nekushanda kwevharuvhu. Power actuated valves anowanzo ane mechanical pointer inopa yenzvimbo vharafu chinzvimbo chiratidzo. Kune rimwe divi, mamwe mavharuvhu haana chero chimiro chechiratidzo chenzvimbo.

Valve Actuators Summary

• Manual actuators ndiyo yakajairika mhando yevhavha actuators. Manual actuators anosanganisira mavhiri emaoko anonamirwa pahunde yevharuvhu zvakananga uye mavhiri emaoko anonamirwa kuburikidza nemagiya kuti ape mukana wemuchina.
• Magetsi emagetsi emagetsi anosanganisira anodzoreredzwa emagetsi mota akabatana nevhavha hunde kuburikidza nechitima chegiya chinoderedza kutenderera uye kuwedzera torque.
• Pneumatic actuators inoshandisa mweya wemhepo pane imwe kana mativi ese e diaphragm kupa simba rekumisa vharafu.
• MaHydraulic actuators anoshandisa mvura yakamanikidzwa kune rimwe kana mativi ese episton kupa simba rinodiwa kuisa vharafu.
• Solenoid actuators ine magineti slug yakasungirirwa pahunde yevharuvhu. Simba rekuisa vharafu rinobva pakukwezva magineti pakati peslug pahunde revharuvhu uye coil ye electromagnet muvharupu actuator.