Kana uchifamba-famba panzvimbo yekugadzira mishonga, uchaona mapaipi ane mavharuvhu ane musoro wakatenderera, ayo ari mavharuvhu anodzora.
Vharuvhu inodzora dhayagiramu yepneumatic
Unogona kuziva rumwe ruzivo nezvevharuvhu inotonga kubva pazita rayo. Izwi guru rekuti "regulation" nderekuti nzvimbo yayo yekugadzirisa inogona kugadziriswa zvisina kurongwa pakati pe0 ne100%.
Shamwari dzakangwarira dzinofanira kuona kuti pane mudziyo wakaturikwa pasi pemusoro wevharuvhu yega yega inotonga. Avo vanoziva nezvayo vanofanira kuziva kuti iyi ndiyo moyo wevharuvhu inotonga, iyo nzvimbo yevharuvhu. Kuburikidza nemudziyo uyu, huwandu hwemhepo inopinda mumusoro (firimu repneumatic) hunogona kugadziriswa. Dzora nzvimbo yevharuvhu nemazvo.
Mavharuvhu anosanganisira mapositi akangwara uye mapositi emakanika. Nhasi tiri kutaura nezvepositi yemakanika yekupedzisira, yakafanana nepositi iri kuratidzwa mumufananidzo.
Nheyo yekushanda kwenzvimbo yemagetsi yepneumatic valve
Dhayagiramu yechimiro chevharuvhu
Mufananidzo wacho unotsanangura zvikamu zvemuchina wekuisa vharuvhu yemhepo chimwe nechimwe. Danho rinotevera nderekuona kuti zvinoshanda sei?
Mhepo inobva mumhepo yakamanikidzwa yechiteshi checompressor yemhepo. Kune vharuvhu yekuderedza kumanikidzwa kwemhepo iri pamberi penzvimbo yemhepo inopinzwa nevharuvhu yekuchenesa mweya wakamanikidzwa. Mhepo inobva pakubuda kwevharuvhu inoderedza kumanikidzwa inopinda kubva panzvimbo yevharuvhu. Huwandu hwemhepo inopinda mumusoro wevharuvhu hunotsanangurwa zvichienderana nechiratidzo chekubuda kwemutongi.
Kuburitswa kwechiratidzo chemagetsi necontroller i4~20mA, uye chiratidzo chemhepo i20Kpa~100Kpa. Kushandurwa kubva pachiratidzo chemagetsi kuenda kuchiratidzo chemhepo kunoitwa kuburikidza nechinoshandura magetsi.
Kana chiratidzo chemagetsi chinobuda nemuchina wekutonga chikachinjwa kuita chiratidzo chegasi chinoenderana nacho, chiratidzo chegasi chinoshandurwa chinobva chashandiswa pamipendero. Chirevo 2 chinotenderera fulcrum, uye chikamu chezasi chelever 2 chinoenda kurudyi choswedera pedyo nemuromo wemuromo. Kumanikidzwa kwekumashure kwemuromo wemuromo kunowedzera, uye mushure mekuwedzerwa nepneumatic amplifier (chikamu chine chiratidzo chishoma pane chiri mumufananidzo), chikamu chemhepo chinotumirwa kuimba yemhepo yepneumatic diaphragm. Chirevo chevharuvhu chinotakura vharuvhu pasi uye chinovhura vharuvhu zvishoma nezvishoma. Chinoderera. Panguva ino, tsvimbo yemhinduro (tsvimbo yeswing iri mumufananidzo) yakabatana netsinde yevharuvhu inofamba ichidzika ichitenderedza fulcrum, zvichiita kuti mugumo wepamberi weshaft udzike pasi. Kamera ye eccentric yakabatana nayo inotenderera counterclockwise, uye roller inotenderera rightwise uye inofamba kuruboshwe. Tambanudza chirevo chemhinduro. Sezvo chikamu chezasi chechirevo chemhinduro chichitambanudza lever 2 uye chichifamba kuruboshwe, chinosvika pakuenzana kwesimba nekumanikidzwa kwechiratidzo kuchishanda pamipendero, saka vharuvhu yakagadzikwa panzvimbo yakati uye haifambi.
Kuburikidza nesumo iri pamusoro apa, unofanira kunzwisisa positioner yemakanika. Kana wawana mukana, zvakanaka kuibvisa kamwe chete paunenge uchiishandisa, uye kuwedzera nzvimbo yechikamu chimwe nechimwe chepositioner nezita rechikamu chimwe nechimwe. Nokudaro, hurukuro pfupi yemakanika inosvika pakuguma. Tevere, tichawedzera ruzivo kuti tinzwisise zvakadzama mavharuvhu anotonga.
kuwedzera ruzivo
Kuwedzera ruzivo rwekutanga
Vharuvhu inodzora diaphragm iri pamufananidzo ine mhepo yakavharwa. Vamwe vanhu vanobvunza kuti, sei?
Kutanga, tarisa kwakanangana nemhepo inopinzwa ne diaphragm, izvo zvine mhedzisiro yakanaka.
Chechipiri, tarisa nzira yekuisa vharuvhu, iyo yakanaka.
Kufefetera kwemhepo kwekamuri remhepo repa diaphragm, diaphragm inodzvanya pasi pematsime matanhatu akafukidzwa nediaphragm, nokudaro ichisunda tsinde revharuvhu kuti rifambe richidzika. Tsinde revharuvhu rakabatana nepakati pevharuvhu, uye tsinde revharuvhu rinoiswa mberi, saka tsinde remhepo ndiro vharuvhu. Saka, inonzi vharuvhu yemhepo-yekuvhara. Kuvhura kwekutadza zvinoreva kuti kana mhepo ikamiswa nekuda kwekuvakwa kana ngura yepombi yemhepo, vharuvhu inodzorerwazve pasi pesimba rekuita kwechitubu, uye vharuvhu inova munzvimbo yakavhurika zvizere zvakare.
Ungashandisa sei vharuvhu yekudzima mweya?
Mashandisirwo ayo anotariswa kubva pamaonero ekuchengetedza. Ichi chinhu chinodiwa pakusarudza kana kuvhura kana kudzima mhepo.
Semuenzaniso: dhiramu remutsi, chimwe chezvinhu zvikuru zvebhoyira, uye vharuvhu rinodzora rinoshandiswa mugadziriro yemvura zvinofanira kuvharwa nemhepo. Sei? Semuenzaniso, kana sosi yegesi kana simba rikadzimwa kamwe kamwe, vira rinoramba richitsva zvine simba uye richiramba richipisa mvura iri mudhiramu. Kana gasi richishandiswa kuvhura vharuvhu rinodzora uye simba rikadzimwa, vharuvhu rinovharwa uye dhiramu rinopiswa mumaminitsi mashoma pasina mvura (dry burning). Izvi zvine njodzi huru. Hazvigoneki kugadzirisa vharuvhu rinodzora munguva pfupi, izvo zvinozoita kuti vira ridzimwe. Njodzi dzinoitika. Naizvozvo, kudzivirira kutsva kwakaoma kana tsaona dzekudzima vira, vharuvhu rinodzima gasi rinofanira kushandiswa. Kunyangwe simba richidzimwa uye vharuvhu rinodzora riri munzvimbo yakavhurika zvizere, mvura inogara ichiiswa mudhiramu remutsi, asi hazvizokonzere mari yakaoma mudhiramu remutsi. Pachine nguva yekugadzirisa kutadza kwevharuvhu rinodzora uye vira haridzimwa zvakananga kuti rigadziriswe.
Kuburikidza nemienzaniso iri pamusoro apa, unofanira kunge wava nekunzwisisa kwekutanga kwekusarudza mavharuvhu ekudzora anovhura mweya uye mavharuvhu ekudzora anovhara mweya!
Kuwedzera Ruzivo 2
Ruzivo rudiki urwu rwuri pamusoro pekuchinja kwemhedzisiro yakanaka neyakaipa yenzvimbo yacho.
Vharuvhu rinodzora riri mumufananidzo iri kushanda zvakanaka. Kamera isina kusimba ine mativi maviri AB, A inomiririra divi repamberi uye B inomiririra divi. Panguva ino, divi reA rinenge rakatarisana nekunze, uye kutendeudza divi reB kunze imhinduro. Saka, kushandura divi reA mumufananidzo kuenda kudivi reB ipfungwa yemagetsi yemhinduro.
Mufananidzo chaiwo uri mumufananidzo ivharuvhu inoshanda zvakanaka, uye chiratidzo chekuburitsa checontroller i4-20mA. Kana 4mA, chiratidzo chemhepo chinoenderana i20Kpa, uye vharuvhu inotonga inenge yakavhurika zvizere. Kana 20mA, chiratidzo chemhepo chinoenderana i100Kpa, uye vharuvhu inotonga inenge yakavharwa zvizere.
Magadzirirwo evharuvhu emakanika ane zvakanakira nezvakaipira
Zvakanakira: kutonga kwakarurama.
Zvakashata: Nekuda kwekushandisa pneumatic control, kana chiratidzo chenzvimbo chichizodzoserwa kukamuri rekudzora repakati, chimwe chishandiso chekushandura magetsi chinodiwa.
Kuwedzera ruzivo rwechitatu
Zvinhu zvine chekuita nekukuvara kwezuva nezuva.
Kukundikana panguva yekugadzira zvinhu kwakajairika uye chikamu chemaitiro ekugadzira. Asi kuti tirambe tiine mhando, kuchengetedzeka, uye huwandu, matambudziko anofanirwa kugadziriswa nenguva. Uku ndiko kukosha kwekugara mukambani. Saka, tichakurukura muchidimbu zviitiko zvakasiyana-siyana zvinosangana nazvo:
1. Kubuda kwe valvu positioner kwakafanana nekamba.
Usavhura chifukidziro chepamberi chevharuvhu; teerera ruzha kuti uone kana pombi yemhepo yakatsemuka uye ichikonzera kubuda kwemvura. Izvi zvinogona kutongwa neziso rega rega. Uye teerera kana paine ruzha rwekubuda kwemvura kubva mukamuri yemhepo inopinzwa.
Vhura chifukidziro chepamberi chevharuvhu; 1. Kana gomba risingachinji rakavharika; 2. Tarisa nzvimbo yebhaffle; 3. Tarisa kusimba kwechitubu chemhinduro; 4. Bvisa vharuvhu yechikwere woongorora diaphragm.
2. Kubuda kwe valvu positioner kunofinha
1. Tarisa kana kumanikidzwa kwemhepo kuri mukati mehuwandu hwakatarwa uye kana tsvimbo yemhinduro yadonha. Iri ndiro danho riri nyore.
2. Tarisa kana waya yechiratidzo chakarurama (matambudziko anomuka gare gare anowanzoregeredzwa)
3. Pane here chakanamira pakati pekoiri nesimbi?
4. Tarisa kana nzvimbo yekufananidza yemuromo wemuromo nebhafure yakakodzera.
5. Tarisa mamiriro e coil ye electromagnetic component
6. Tarisa kana nzvimbo yekugadzirisa yechitubu chebharanzi yakakodzera
Zvadaro, chiratidzo chinopinzwa, asi kumanikidzwa kwekubuda hakuchinji, pane kubuda asi hakusviki pahuwandu hwakanyanya, nezvimwewo. Kukanganisa uku kunowanikwawo muzvikanganiso zvezuva nezuva uye hazvizokurukurwa pano.
Kuwedzera ruzivo rwechina
Kugadzirisa vharuvhu yekurohwa
Munguva yekugadzira, kushandisa vharuvhu inogadzirisa kwenguva yakareba kunotungamira pakurohwa zvisina kururama. Kazhinji, pane chikanganiso chikuru chinoitika kana uchiedza kuvhura nzvimbo yakati.
Kurova kuri pakati pe0-100%, sarudza poindi yepamusoro yekugadzirisa, inova 0, 25, 50, 75, uye 100, zvese zvichiratidzwa semaperesenti. Kunyanya kune vanoisa mavharuvhu emakanika, pakugadzirisa, zvakakosha kuziva nzvimbo dzezvikamu zviviri zvemaoko zviri mukati mepoziti, kureva nzvimbo ye zero adjustment uye nguva yekugadzirisa.
Kana tikatora vharuvhu inodzora mhepo semuenzaniso, gadzirisa.
Danho 1: Panzvimbo yekugadzirisa zero, imba yekudzora kana jenareta yechiratidzo inopa 4mA. Vharuvhu inotonga inofanira kuvharwa zvizere. Kana isingakwanise kuvharwa zvizere, ita kugadzirisa zero. Mushure mekunge kugadzirisa zero kwapera, gadzirisa zvakananga 50% point, uye gadzirisa span zvinoenderana. Panguva imwe chete, cherechedza kuti tsvimbo yemhinduro nesimbi yevharuvhu zvinofanira kunge zviri mumamiriro akamira. Mushure mekunge kugadzirisa kwapera, gadzirisa 100% point. Mushure mekunge kugadzirisa kwapera, gadzirisa kakawanda kubva pamapoinzi mashanu ari pakati pe0-100% kusvika kuvhura kwacho kwanyatsojeka.
Mhedziso; kubva pakuisa chigaro chemakanika kusvika pakuisa chigaro chekanika. Kubva pamaonero esainzi netekinoroji, kukura nekukurumidza kwesainzi netekinoroji kwakaderedza simba revashandi vekugadzirisa vari pamberi. Ini pachangu, ndinofunga kuti kana uchida kushandisa hunyanzvi hwako hwekuita nemaoko uye kudzidza hunyanzvi, kuisa chigaro chemakanika ndiyo yakanakisa, kunyanya kune vashandi vatsva vemidziyo. Kutaura chokwadi, nzvimbo ine hungwaru inogona kunzwisisa mazwi mashoma mubhuku rekushandisa uye ingofambisa minwe yako. Ichagadzirisa zvese otomatiki kubva pakugadzirisa zero point kusvika pakugadzirisa range. Ingomirira kuti ipedzise kutamba uye kuchenesa nzvimbo yacho. Ingobva. Kune mhando yemakanika, zvikamu zvakawanda zvinoda kupatsanurwa, kugadziriswa uye kudzoserwazve iwe pachako. Izvi zvichavandudza kugona kwako kushanda nemaoko uye zvinoita kuti ufadzwe zvakanyanya nechimiro chayo chemukati.
Pasinei nekuti yakangwara here kana kuti kwete, ine basa guru mukugadzirwa kwese kwega. Kana yangotanga "kurova", hapana nzira yekugadzirisa uye kutonga kwega hakuna zvakunoreva.
Nguva yekutumira: Nyamavhuvhu-31-2023