Ma actuator emagetsi nepneumaticyemavharuvhu emapaipi: Zvinoita sekuti mhando mbiri dzema actuator dzakasiyana zvakanyanya, uye sarudzo inofanira kuitwa zvichienderana nemagetsi aripo panzvimbo yekuisa. Asi kutaura chokwadi maonero aya ane divi rawo. Kuwedzera pamusiyano mukuru uye uri pachena, anewo zvimwe zvinhu zvisingaonekwe zvakajeka.

Ma actuator emagetsi nepneumatic ndiwo maviri anonyanya kushandiswa mukufambisa masystems e automation. Kazhinji, sarudzo yekusarudza actuator inoitwa muchikamu chekutanga chekugadzira, uye ichashandiswa kusvika kumagumo ehupenyu hwese mushure mekuiswa.

Pakusarudza rudzi rwesimba remuchina wemagetsi, vanhu havawanzo funga nezvematanho enzira yekushanda iri mupayipi, asi vanongotarisa chete zvinhu zvemukati zvemugadziri, mamiriro emagetsi, kana kuti nzvimbo yacho inogona kupa gasi rakawanda rakagadzirwa kare.

Zvisinei, panguva yekushanda, zvinowanzoonekwa kuti mamwe mavharuvhu anofanira kunge aine ma actuator, kana kuti ma parameters e process medium mune mamwe mavharuvhu achachinja. Mubvunzo unomuka ndewokuti: Ndinofanira kuchengeta actuator yekutanga here kana kuitsiva neimwe actuator kuti ndivandudze mashandiro?

Hupenyu hwebasa hwakareba

Chinyorwa chino chichatsanangura uye chichaenzanisa hunhu hukuru hwekushanda kwemagetsi nemagetsi.

Mumamiriro ezvinhu akajairwa, vagadziri vanovimbisa ma operation cycles gumi emagetsi uye ma operation cycles zana emagetsi. Zviri pachena kuti, maererano nehuwandu hwema operation cycles, pneumatic actuator ine hupenyu hwakareba nekuda kwechimiro chayo chiri nyore. Pamusoro pezvo, friction contact surface ye pneumatic actuator yakagadzirwa ne elastomer kana polymer, uye O-rings dzakasakara nezvinhu zvepurasitiki zvinotungamira zviri nyore kutsiva.

Semuchina wemagetsi, kazhinji pane giya rekudzikisa kubva pamota kuenda kushaft yekubuda. Kune magiya akawanda anowirirana, ayo anozopera panguva yekushanda. Zvakakoshawo kuziva kuti hapana chikonzero chekuchinja mafuta anozora mukati mehupenyu hwese hwemuchina wemagetsi.

Torque

Chimwe chezvinhu zvinonyanya kukosha pakushanda kwema actuator emavharuvhu epombi i torque. Torque ye actuator yemagetsi inoenderana nedhizaini (constant component) uye voltage inoshandiswa pa stator. Torque ye actuator yepneumatic inoenderana nedhizaini (constant component) uye kumanikidzwa kwemhepo inopihwa ku actuator yepneumatic.

Kazhinji, torque ye actuator inofanira kunge yakakura kupfuura torque yepamusoro yevharuvhu, kana kupfuura torque inodiwa kuti chinhu chinovhara chifambiswe. Pakushandiswa chaiko, torque chaiyo yevharuvhu inogona kunge yakakura kupfuura torque yepamusoro yakataurwa nechiratidzo chemugadziri, uye zvakare yakakura kupfuura torque yepamusoro ye actuator. Hapana mubvunzo kuti izvi zvinokonzeresa emergency.

Kana ukaramba uchimhanyisa actuator, inogona kukonzera kukuvara kwe actuator nevharuvhu. Kana torque yevharuvhu ikawedzera, mota inowedzera torque zvishoma nezvishoma kusvika yasvika pa pull-out value (pull-out value). Izvi zvinoreva kuti chimiro chemuchina chinomanikidzwa kubuda uye chinotsungirira torque yakawandisa kupfuura dhizaini.

Kudzivirira torque zvakanyanya

Kuti michina isakuvadzwe pasi pemamiriro ezvinhu ataurwa pamusoro apa, actuator yemagetsi inogona kuve nemimwe michina yakakosha. Chinonyanya kuzivikanwa i torque switch, iyo inogona kuva yemakanika (pfungwa yakajairika yekushanda ndeyekuti giya rehonye rinofamba zvakananga mumamiriro e over-torque); inogonawo kuva yemagetsi (pfungwa yakajairika ndeyekuyera stator current, kana Hall effect.). Kana torque ikadarika kukosha kwakagadzirwa, torque switch inogona kudimbura voltage ye stator nekumisa actuator motor. Hapana chikonzero chekudzivirira over-torque muma pneumatic actuators. Kana torque yakashandiswa pavharuvhu ikadarika muganho wakatarwa, hunhu hwemuviri hwemhepo yakamanikidzwa huchaita kuti pneumatic actuator imire kutyaira. Kusiyana nema electric actuators, output torque yema pneumatic actuators haizopfuure muganho wekugadzira. Zvinogona kufungwa kuti kana pipeline valve ine pneumatic actuator, njodzi yekukundikana kwemidziyo nekuda kwe torque inopfuura kukosha kwakatarwa inobviswa.

Dhizaini isingaputike

Kana paine zvinhu zvine njodzi munzvimbo inoshandiswa, michina yemagetsi inogona kukonzera kuputika. Nezvemazinga ekudzivirira uye nzira dzekudzivirira munzvimbo ine njodzi, hazvina kunyorwa muchinyorwa chino nekuda kwekushaikwa kwenzvimbo.

Kunyange zvakadaro, zvichiri kudiwa kusimbisa kuti michina isingaputike inofanira kushandiswa munzvimbo dzine zvinhu zvine njodzi.

Zvichienzaniswa nema "actuator" emagetsi akajairika eindasitiri, ma "actuator" emagetsi asingaputike ema "pombi" anodhura zvakanyanya uye akaomarara mukugadzirwa. Kunyangwe kana "pneumatic actuator" ikashandiswa munzvimbo ine njodzi, hapana njodzi yekuputika. Kune ma "pneumatic actuators", dhizaini yakakosha yenzvimbo ine njodzi inongogumirawo kune "positioners", "solenoid valves" uye "limit switches" (Mufananidzo 1-3). Saizvozvo, kana "pneumatic actuator" ine "extension" isingaputike ikashandiswa kushandisa "pipeline valve", mutengo uchave wakaderera zvakanyanya pane we "electric actuator" isingaputike ine basa rimwe chete.

Kuisa nzvimbo

Ma actuator epneumatic ane chimwe chezvikanganiso zvikuru. Kana actuator yasvika pakati pekurohwa, nzvimbo yacho inova yakaoma, zvinoreva kuti nzvimbo ye spool ye control valve inova yakaoma.

Nekuda kwehunhu hwemhepo, kururama kwenzvimbo dzema actuator emhepo kwakaderera kakawanda pane kweactuator emagetsi. Kana actuator yemagetsi ikashandisa mota inokwira, kururama kwayo kwenzvimbo kwakakwira zvakanyanya kupfuura kweactuator yemhepo ine positioner. Iyo yekupedzisira inogona kushandiswa chete kune masisitimu asingade kunyatsorongeka kwepamusoro kana kunyatsorongeka kwekudzora. Ma actuator emhepo anoshandiswa mumavharuvhu epombi ane hunhu hwawo mukugadzirwa kwechimiro: zvikamu zvese zvesystem yekudzora zvinoiswa pamusoro pekunze kweactuator, kana kunze kwechimiro chikuru. Kana uchida kuchinja operating mode kubva pa off kuenda kune control, unofanirwa kutsiva solenoid valve ne positioner. Sezvo zvikamu izvi zviviri zvakaiswa kunze kwe actuator yemhepo, uye dhizaini ye mating surface yakafanana, zviri nyore kubvisa distributor uye kuisa positioner. Nemamwe mazwi, actuator imwechete yemhepo inogona kushandiswa pakudzima nekudzora nekutsiva zvishandiso zvinoenderana (Mufananidzo 1-2).