Pneumatic actuator yog ib qho actuator uas tso siab rau huab cua los tsav lub valve kom qhib thiab kaw. Nws cov actuator thiab tsav mechanism yog ib qho tseem ceeb, yog li cov qauv yooj yim thiab lub ntim me me. Nws yog dav siv nyob rau hauv fais fab nroj tsuag thiab lwm lub sij hawm uas muaj kev ruaj ntseg siab. Tsis muaj teeb meem dab tsi nws yog cov cuab yeej, nws yuav ntsib teeb meem tom qab siv lub sijhawm ntev, thiab pneumatic actuators tsis muaj qhov zam.
Feem ntau ua txhaum thiab kev saib xyuas ntawm pneumatic actuators:
Qhov txhaum 1. Tom qab lub hwj chim qhib, qhov ntsuas qhov ntsuas hluav taws xob tsis teeb, lub servo tso tawm lub rooj tsavxwm tsis muaj kev tawm tswv yim, thiab tsis muaj qhov ua rau lub teeb liab.
Txoj kev tu: Nws yog ib qho tsim nyog los xyuas seb lub fuse puas qhib. Yog hais tias nws nyob rau hauv zoo, xyuas seb lub hwj chim mov ntawm lub servo tso tawm board puas nyob rau hauv kev sib cuag zoo. Yog tias nws zoo li qub, xyuas lub teeb qhia lub zog. Yog tias qhov taw qhia lub teeb qhib, nws txhais tau hais tias qhov taw qhia lub teeb yog faulty.
Fault 2. Tom qab lub actuator yog energized thaum lub sij hawm ua hauj lwm thiab debugging, ib tug teeb liab muab, thiab lub valve yuav qhib tau tab sis tsis ua thaum nws kaw.
Txoj kev tu: Ua ntej kos lub tswv yim Circuit Court. Yog tias tsis muaj qhov txhaum, qhov taw qhia lub teeb yog nyob rau thaum lub teeb liab qhib, qhia tias nws yog qhov qub. Thaum lub teeb liab raug kaw, qhov taw qhia lub teeb tsis teeb, qhia tias muaj teeb meem nrog lub thyristor tawm. Txheeb xyuas lub teeb qhia, siv lub ntsuas ntsuas ntsuas ntsuas qhov ntsuas tawm lub teeb, qhib Circuit Court, thiab rov qab mus rau qhov qub tom qab hloov lub thyristor.
In general, the selection of pneumatic actuators needs to consider multiple factors, such as the operating conditions of the valve, operating temperature, operating frequency, management and pressure difference, conveying medium (lubrication, drying, mud), etc., in the selection of pneumatic actuators In the process, the main points are as follows.
1. Kev khiav hauj lwm thrust: Muaj ob lub ntsiab lus ntawm lub valve hluav taws xob ntaus ntawv: ib qho yog tsis nruab nrog thrust phaj, thiab lub torque yog ncaj qha tso zis; lwm yam yog nruab nrog ib tug thrust phaj, thiab cov zis torque yog hloov dua siab tshiab rau hauv cov zis thrust los ntawm lub valve qia txiv ntoo nyob rau hauv lub thrust phaj.
2. Kev khiav hauj lwm torque: Xaiv cov tsis tseem ceeb ntawm lub valve hluav taws xob ntaus ntawv, thiab cov zis torque ntawm pneumatic actuator yuav tsum yog 1.2 mus rau 1.5 npaug ntawm qhov siab tshaj plaws kev khiav hauj lwm torque ntawm lub valve. Qhov txav ceev ntawm pneumatic actuator yog qhov loj heev. Feem ntau, thaum lub load nce, qhov ceev ntawm pneumatic actuator yuav qeeb heev, tab sis nws cov zis siab tsis muaj dab tsi cuam tshuam nrog kev khiav hauj lwm siab. Kev sib cais zoo rau pneumatic actuators.
3. Cov kab txaij piv rau ntau- tig nce qia valve: Yog tias lub valve loj qia txoj kab uas hla tau tso cai los ntawm cov khoom siv hluav taws xob tsis tuaj yeem hla lub qia ntawm lub valve, nws tsis tuaj yeem sib sau ua ke rau hauv lub valve. Yog li ntawd, sab hauv txoj kab uas hla ntawm lub hollow tso zis ncej ntawm lub tshuab hluav taws xob yuav tsum tau loj dua li lub sab nraud txoj kab uas hla ntawm lub valve qia ntawm lub nce qia valve. Rau ib feem -tig li qub thiab tsaus nti- qia li qub hauv ntau- tig li qub, txawm hais tias txoj kab ntawm txoj kab uas hla ntawm lub qia valve tsis tas yuav xav txog, txoj kab uas hla ntawm lub valve qia thiab qhov loj ntawm txoj kev tseem ceeb yuav tsum tau txiav txim siab thaum xaiv, kom lub valve tuaj yeem ua haujlwm ib txwm ua tom qab sib dhos.
