The pneumatic actuatorchowonjezera choyambirira ndi choyimira valavu chowongolera. Zimagwira ntchito motsatirana ndi pneumatic actuator kuti iwonjezere kulondola kwa malo a valve, kuchepetsa zotsatira za mphamvu yapakati yapakati ndi kugwedezeka kwa tsinde, ndikuwonetsetsa kuti valavu imayankha chizindikiro cha olamulira. kupeza malo oyenera.

Zinthu zotsatirazi zimafuna kugwiritsa ntchito locator:

1. Pamene pali kusiyana kwakukulu kwapakati ndi kuthamanga kwapakati;

2. Pamene caliber ya valavu yowongolera ndi yayikulu (DN> 100);

3. Vavu yomwe imayendetsa kutentha kwambiri kapena kutsika;

4. Pamene kuli kofunika kufulumizitsa ntchito ya valve yolamulira;

5. Pamene zizindikiro zokhazikika zimagwiritsidwa ntchito kuyendetsa makina oyendetsa makina osagwirizana ndi masika (masika a kasupe kunja kwa 20-100KPa);

6. Nthawi zonse pamene kugawanika kwa magawo kumagwiritsidwa ntchito;

7. Vavu ikatembenuzidwira mozungulira, njira zotsekera-kutseka ndi zotseguka za mpweya zimakhala zosinthika;

8. Pamene cam positioner ikufunika kusinthidwa kuti isinthe mawonekedwe othamanga a valve;

9. Pakafunika kuchitapo kanthu molingana, palibe chifukwa chopangira kasupe kapena pisitoni;

10. Magetsi-pneumatic valve positioners ayenera kugawidwa pamene akugwiritsa ntchito zizindikiro za magetsi kuti aziwongolera makina oyendetsa pneumatic.

Valve yamagetsi yamagetsi:
Valavu ya solenoid iyenera kukhazikitsidwa mu dongosolo pamene kuwongolera pulogalamu kapena kuwongolera magawo awiri kumafunika. Kuyanjana pakati pa valve solenoid ndi valve yolamulira kuyenera kuganiziridwa posankha solenoid valve kuwonjezera pa AC ndi DC magetsi, magetsi, ndi ma frequency. Itha kukhala ndi magwiridwe antchito "otseguka" kapena "otsekedwa".
Ma valve awiri a solenoid angagwiritsidwe ntchito mofanana ngati kuli kofunikira kuonjezera mphamvu ya solenoid kuti muchepetse nthawi yochitapo kanthu, kapena valavu ya solenoid ingagwiritsidwe ntchito ngati valavu yoyendetsa ndege pamodzi ndi mphamvu yaikulu ya pneumatic relay.
Pneumatic relay:
Pneumatic relay ndi mtundu wa amplifier yamphamvu yomwe imatha kutumiza chizindikiro cha kuthamanga kwa mpweya kutali kuti muchepetse nthawi yobwera chifukwa chotambasula mapaipi. Pakati pa olamulira ndi valavu yoyendetsa munda, pali ntchito yowonjezera yowonjezera kapena kuchepetsa chizindikiro. Amagwiritsidwa ntchito makamaka pakati pa transmitter yakumunda ndi chipangizo chowongolera muchipinda chapakati chowongolera.

chosinthira:
Pali mitundu iwiri yosinthira: chosinthira chamagetsi chamagetsi ndi chosinthira magetsi. Kuzindikira kutembenuka kobwerezabwereza kwa ubale wapadera pakati pa magesi ndi magetsi ndi zomwe zimachita. Amagwiritsidwa ntchito kwambiri kutembenuza ma siginecha a 0 100KPa kukhala ma siginecha amagetsi a 0 10 mA kapena 0 4 mA, kapena 0 10 mA kapena 4 mA ma siginecha amagetsi mu 0 10 mA kapena 4 mA ma siginecha amagetsi.

Chowongolera mpweya:
Chomangira cha chipangizo chomwe chimagwiritsidwa ntchito ndi zida zamagetsi zamagetsi ndi ma valve otsitsa mpweya. Ntchito yake yayikulu ndikukhazika mtima pansi pamlingo womwe ukufunidwa ndikusefa ndikuyeretsa mpweya woponderezedwa womwe umachokera ku compressor ya mpweya. Silinda ya mpweya, zida zopopera mbewu, magwero operekera mpweya, ndi zida zokhazikitsira mpweya wa zida zazing'ono zamapneumatic ndi zina mwa zida za pneumatic ndi ma valve solenoid omwe angagwiritsidwe ntchito.

Vavu yodzitsekera yokha (valavu yachitetezo):
Valavu yodzitsekera ndi njira yomwe imasunga valavu. Gwero la mpweya likalephera, chipangizochi chikhoza kuzimitsa chizindikiro cha mpweya kuti chisunge kansalu ka membrane kapena chizindikiro cha silinda pamlingo wake wolephera kulephera komanso malo a valve pa malo ake olephera. Kuti zotsatira za chitetezo udindo.

valavu potumiza transmitter
Pamene valavu yoyang'anira ili kutali ndi chipinda chowongolera, m'pofunika kukonzekeretsa valavu yotumizira ma valve, yomwe imatembenuza kusamutsidwa kwa valve yotsegula kukhala chizindikiro chamagetsi ndikuyitumiza ku chipinda chowongolera malinga ndi lamulo lokonzedweratu, kuti athe kumvetsetsa bwino kusintha kwa valve popanda kupita kumalo. Chizindikirocho chikhoza kukhala chizindikiro chosalekeza choyimira kutsegulidwa kulikonse kapena kuwonedwa ngati ntchito yobwezeretsa valavu.

Kusintha kwapaulendo (communicator)
Kusintha kwa malire ndi gawo lomwe limatumiza chizindikiro nthawi imodzi ndikuwonetsa malo awiri owopsa a valavu. Chipinda choyang'anira chikhoza kufotokoza kusintha kwa valve kutengera chizindikiro ichi ndikuchitapo kanthu.