Eyona nto iphambili kwi-actuator ye-pneumatic yiivalvu yokulawulaIsebenza ngaxeshanye ne-actuator ye-pneumatic ukwandisaukuchaneka kwendawo yevalvu, nciphisa imiphumo yamandla angalinganiyo kunye nokungqubana kwesiqu sesixhobo, kwaye uqinisekise ukuba ivalvu isabela kwisignali yomlawuli. fumana indawo efanelekileyo.

Ezi meko zilandelayo zifuna ukusetyenziswa kwe-locator:
Xa uxinzelelo oluphakathi luphezulu kwaye kukho umahluko omkhulu kuxinzelelo; 2. Xa ubukhulu bevalvu elawulayo bukhulu (DN> 100);
3. Ivalvu elawula amaqondo obushushu aphezulu okanye aphantsi;
4. Xa kubalulekile ukukhawulezisa umsebenzi wevalvu elawulayo;
5. Xa kusetyenziswa imiqondiso eqhelekileyo ukuqhuba ii-actuators ezinee-spring ranges ezingaqhelekanga (ii-spring ranges ezingaphandle kwe-20-100KPa);
6. Nanini na xa kusetyenziswa ulawulo lobubanzi obuhlukeneyo;
7. Xa ivalvu ijikeleziswa, imiyalelo yokuvala umoya kunye nemiyalelo yokuvula umoya iyatshintshana;
8. Xa i-positioner cam kufuneka iguqulwe ukuze kutshintshwe iimpawu zokuhamba kwevalvu;
9. Xa kuza kufezwa isenzo esilinganayo, akukho sixhobo sokusebenza sepiston okanye indlela yokusebenza kwentwasahlobo;
10. Ii-positioners zevalvu zombane-zomoya kufuneka zisasazwe xa kusetyenziswa imiqondiso yombane ukulawula ii-actuators zomoya.

Ivalvu ye-electromagnetic: Kufuneka kufakwe ivalvu yesolenoid kwinkqubo xa kufuneka ulawulo lwenkqubo okanye ulawulo lweendawo ezimbini. Ukusebenzisana phakathi kwevalvu yesolenoid kunye nevalvu elawulayo kufuneka kuthathelwe ingqalelo xa kukhethwa ivalvu yesolenoid ukongeza kumthombo wamandla we-AC kunye ne-DC, i-voltage, kunye ne-frequency. Inokuba nokusebenza "okuqhelekileyo okuvulekileyo" okanye "okuqhelekileyo okuvaliweyo".
Iivalvu ezimbini zesolenoid zingasetyenziswa ngaxeshanye ukuba kuyimfuneko ukwandisa umthamo wevalvu yesolenoid ukuze kuncitshiswe ixesha lokusebenza, okanye ivalvu yesolenoid ingasetyenziswa njengevalvu yovavanyo kunye ne-relay yepneumatic enamandla amakhulu.

I-relay ye-pneumatic: I-relay ye-pneumatic luhlobo lwe-amplifier yamandla enokuhambisa isignali yoxinzelelo lomoya kwindawo ekude ukuze kususwe ukushiyeka okubangelwa kukwanda kombhobho wesignali. Phakathi komlawuli kunye nevalvu yokulawula intsimi, kukho umsebenzi owongezelelweyo wokwandisa okanye ukunciphisa isandisi. Isetyenziswa ikakhulu phakathi kwe-transmitter yentsimi kunye nesixhobo sokulawula kwigumbi lolawulo eliphakathi.

isiguquli:
Isiguquli sahlulwe saba sisiguquli segesi-umbane kunye nesiguquli segesi-umbane. Umsebenzi waso kukufezekisa ukuguqulwa okudibeneyo kobudlelwane obuthile phakathi kwemiqondiso yegesi kunye nombane. Sisetyenziswa kakhulu ukuguqula ukuguqulwa kwesignali yombane ye-0~10mA okanye i-4~20mA okanye isignali yegesi ye-0~100KPa ibe sisignali yombane ye-0~10mA okanye ye-4~20mA.

umlawuli weefilitha zomoya:

Isincamathiselo sesixhobo esisetyenziswa kwizixhobo zokwenza izinto ngokuzenzekelayo kwimizi-mveliso yivalvu yokwehlisa uxinzelelo lwesihluzo somoya. Umsebenzi wayo oyintloko kukuzinzisa uxinzelelo kwinqanaba elifunekayo ngelixa kuhluzwa kwaye kucocwa umoya ocinezelweyo ovela kwi-air compressor. Isilinda somoya, izixhobo zokutshiza, imithombo yonikezelo lomoya, kunye nezixhobo zokuzinzisa uxinzelelo lwezixhobo ezincinci zomoya zezinye zemizekelo yezixhobo zomoya kunye neevalvu zesolenoid ezinokusetyenziswa kuzo.

Ivalvu yokhuseleko (ivalufu ezitshixayo)

Ivalvu ezitshixayo yindlela egcina ivalvu isendaweni yayo. Xa umthombo womoya ungaphumeleli, isixhobo singawucima umqondiso womthombo womoya ukuze sigcine umqondiso woxinzelelo lwegumbi le-membrane okanye isilinda kwinqanaba laso langaphambi kokusilela kunye nendawo yevalvu kwindawo yaso yangaphambi kokusilela. Kwimpembelelo yokhuseleko lwendawo.

umthumeli wesikhundla seevalvu
Xa ivalvu elawulayo ikude negumbi lolawulo, kuyimfuneko ukuxhobisa i-transmitter yendawo yevalvu, eguqula ukufuduka kokuvulwa kwevalvu ibe yisignali yombane kwaye iyithumele kwigumbi lolawulo ngokuhambelana nomthetho omiselweyo, ukuze kuqondwe ngokuchanekileyo indawo yokutshintsha kwevalvu ngaphandle kokuya kwindawo. Isignali inokuba yisignali eqhubekayo emele naluphi na ukuvulwa kwevalvu okanye inokuthathwa njengomsebenzi wokubuyisela umva wevalvu.

Utshintsho lonxibelelwano ngexesha lokuhamba
Iswitshi yomda yinxalenye edlulisela isignali yesalathisi ngaxeshanye kwaye ibonakalisa iindawo ezimbini ezigqithisileyo zeswitshi yevalvu. Igumbi lolawulo lingaxela imeko yeswitshi yevalvu ngokusekelwe kolu phawu kwaye lithathe amanyathelo afanelekileyo.