Introduction to Pressure Instrumentation

Kev nkag siab txog kev ntsuas siab yog qhov tseem ceeb hauv ntau yam kev siv hauv kev lag luam, los ntawm cov txheej txheem tswj mus rau kev nyab xeeb. Phau ntawv qhia no qhia meej meej txog cov cuab yeej ntsuas siab, lawv cov qauv kev ua haujlwm, thiab cov kev siv ib txwm siv. Txhua ntu yog tsim los ua kom yooj yim cov ntsiab lus nyuaj, ua rau kev kawm zoo thiab koom nrog.

1. Bourdon Tube Pressure Gauge

Feem ntau siv nyob rau hauv kev lag luam systems, xws li boilers, Bourdon tube siab gauges ua hauj lwm nyob rau hauv lub hauv paus ntsiab lus ntawm ib tug nkhaus, hollow raj uas deforms nyob rau hauv lub siab.

Txoj Cai Ua Haujlwm:

• Pressurized kua nkag mus rau hauv lub raj Bourdon nkhaus.
• Lub raj me ntsis straightens, hloov qhov kev txav mus los ntawm qhov system ntawm:
  • Txuas pas nrig
  • Segment thiab pinion iav
  • pointer thiab dial
• Tus pointer ces precisely qhia tus nqi siab ntawm lub calibrated dial.

Qib raug:

Qhov tseeb yog txhais raws li feem pua ​​​​ntawm tag nrho cov nplai ntawm qhov tso cai yuam kev.

• Cov qib uas muaj xws li: 0.5, 1.0, 1.5, 2.0, thiab 2.5.
• Tus lej qis dua qhia qhov tseeb dua.
• Qib 3 thiab 4 tsis tshua muaj kev ua haujlwm hauv cov ntawv thov tseem ceeb xws li cov tshuab boiler vim lawv qhov qis dua.

2. Hluav taws xob tiv tauj ntsuas ntsuas

Cov cuab yeej no yog ib qho kev hloov kho tshiab ntawm Bourdon lub ntsuas siab, kev sib txuas hluav taws xob los muab lub tswb tseem ceeb thiab kev tswj hwm kev ua haujlwm.

Nta:

• Nruab nrog ob qho tib si sab sauv thiab qis qis hu.
• Ua rau lub tswb lossis cov lus teb tsis siv neeg thaum muaj qhov ntsuas siab tshaj.
• Tau seamlessly integrated nrog relays thiab contactors rau kev tswj tsis siv neeg.
• Tshwj xeeb yog siv rau hauv qhov xav tau ib puag ncig xws li roj thiab roj boiler systems.

3. Capacitive Pressure Sensor

Cov sophisticated sensors ntes lub siab los ntawm kev ntsuas qhov kev hloov pauv hauv lub peev xwm los ntawm qhov deformation ntawm lub diaphragm hloov tau.

Txoj Cai Ua Haujlwm:

• Kev siv siab ua rau lub diaphragm hloov tau txav mus.
• Qhov kev hloov pauv no ncaj qha hloov lub peev xwm ntawm ob daim hlau.
• Cov teeb liab tshwm sim tom qab ntawd raug hloov mus rau hauv qhov ntsuas hluav taws xob tso zis.

Hom:

• Muaj nyob rau hauv ob qho tib si ib leeg-kawg thiab sib txawv tsim.
• Differential siab sensors feem ntau muaj kwv yees li ob zaug ntawm rhiab heev ntawm ib leeg-kawg hom.

Qhov zoo:

• High rhiab heev, enabling precision ntsuas.
• Cov lus teb ceev ceev rau cov ntawv thov dynamic.
• Zoo heev tiv thaiv kev poob siab thiab kev co.
• Kev tsim qauv yooj yim thiab ruaj khov.

4. Bellows Pressure Gauge

Qhov ntsuas no yog qhov kev xaiv zoo tshaj plaws rau kev ntsuas qhov hloov pauv hloov siab, tshwj xeeb tshaj yog haum rau boiler qhov cua tshuab thiab cov kav dej.

Txoj Cai Ua Haujlwm:

• Lub siab nkag mus rau qhov tshwj xeeb hauv plab kab noj hniav.
• Lub hauv caug nthuav dav, tsim kom muaj cov neeg kho tshuab hloov pauv.
• Cov lus tsa suab no raug xa mus rau lub pointer ntawm lub iav mechanism.
• Kev nyeem ntawv nyob siab yog tso tawm ncaj qha rau ntawm qhov ntsuas lub dial.

5. Cov ntsuas kub siab

Cov cuab yeej sib xyaw ua ke no siv lub kaw lus kaw uas muaj cov kua dej tshwj xeeb kom hloov pauv qhov kub thiab txias rau hauv kev nyeem ntawv siab.

Cov khoom xyaw:

• Ib tug kheej kheej (kev sojntsuam) muab tso rau hauv qhov kub thiab txias cheeb tsam yuav tsum tau saib xyuas.
• Lub raj capillary tsim los nqa cov kev hloov siab.
• Ib lub raj Bourdon, uas cuam tshuam rau cov kev hloov pauv hauv lub siab xa mus.
• Ib tus pointer uas qhia tau qhov kub thiab txias ntawm lub dial calibrated.

Cov kua dej siv:

• Feem ntau ntim nrog kua, ncu, lossis roj xws li nitrogen (xaiv rau nws qhov ruaj khov).
• Kev khiav hauj lwm ntau yam feem ntau ncua ntawm -100 ° C txog + 500 ° C.

Daim ntawv thov:

• Qhov tseem ceeb rau kev ntsuas kub tsis tu ncua thiab kev hloov pauv tsis siv neeg.
• Dav siv rau kev tswj circuits hauv ntau hom kev lag luam.

6. Strain Gauge Pressure Sensors

Cov sensors muaj meej heev leverage strain gauges los hloov cov neeg kho tshuab strain ncaj qha mus rau hauv cov kev hloov pauv hauv hluav taws xob tsis kam.

Cov ntsiab lus tseem ceeb:

• Ib qho kev ntsuas ntsuas meticulously bonded rau lub siab-sensitive substrate.
• Lub substrate deforms nyob rau hauv lub siab thov, yog li hloov qhov tsis kam ntawm lub strain gauge.
• Feem ntau siv Wheatstone choj Circuit Court rau kev ntsuas qhov tseeb ntawm kev hloov pauv.
• Cov teeb liab tshwm sim yog ces amplified thiab digitized rau cov zis tseeb.

Variations:

• Muaj nyob rau hauv ob qho tib si hlau ntawv thiab semiconductor hom.
• Hlau foil hom ntxiv muaj xws li hlau thiab ntawv ci subtypes.

Siv Case:

• Zoo heev rau seamless kev koom ua ke rau niaj hnub digital tswj systems.
• Muab qhov tseeb siab thiab kho tau zoo rau cov ntawv thov ntsuas dynamic.

Xaus: Visual Learning, Hands-on Skills

Txawm hais tias koj yog tus tshiab rau kev ntsuas los yog tsuas yog ua kom koj cov kev paub tshiab, cov kev taw qhia kev ntsuas kev ua haujlwm siab no yog tsim los pab koj ceev nrooj nkag siab cov ntsiab lus tseem ceeb thiab tsim kom muaj kev nkag siab zoo.

Nyob twj ywm mloog rau cov lus qhia yooj yim dua ntawm qib, ntws, thiab ntsuas ntsuas ntsuas-txhua yam khoom siv los ua kev kawm automation tsis tsuas yog qhia tab sis kuj muaj txiaj ntsig zoo.