Dab tsi yog cov qauv thiab kev ua haujlwm ntawm tus pas nrig?

Lub pas nrig yog ib qho tseem ceeb ntawm cov pas nrig twj tso kua mis roj tsim khoom. Lub luag haujlwm ntawm tus pas nqus dej yog txuas rau sab sauv ntawm cov roj twj tso kua mis thiab qhov qis ntawm cov roj twj tso kua mis kom xa hluav taws xob, raws li qhia hauv daim duab. Txoj hlua sucker pas nrig yog tsim los ntawm ob peb lub pas nrig txuas nrog cov couplings.

Lub pas nrig nws tus kheej yog ib lub pas nrig uas ua los ntawm cov hlau puag ncig, nrog tuab forged taub hau ntawm ob qho kawg, nrog rau cov xov txuas thiab ib qho square seem rau lub ciaj ntswj. Sab nraud threads ntawm ob lub pas nrig txuas nrog ib qho txuas. Cov couplings feem ntau yog siv los txuas qhov sib npaug ntawm txoj kab uas hla sucker rods, thiab txo cov couplings yog siv los txuas qhov sib txawv-inch sucker rods.

Tam sim no, sucker rods tau muab faib ua ob hom los ntawm cov chaw tsim khoom tsim khoom, ib qho yog carbon steel sucker pas nrig, thiab lwm yam yog alloy steel sucker pas nrig. Carbon steel sucker rods feem ntau yog ua los ntawm No. 40 lossis 45 high-quality carbon steel; alloy steel sucker rods yog ua los ntawm 20CrMo thiab 20NiMo steel. Sucker rods yog nquag tawg nyob ze ntawm lub qhov dej thiab cov xov.

Txoj hlua sucker pas nrig muaj polished pas nrig thiab downhole sucker pas nrig. Sab saum toj sucker pas nrig ntawm txoj hlua sucker qws yog hu ua tus pas nrig polished. Cov pas nrig polished koom tes nrog lub qhov ncauj qhov ntswg sealing lub thawv kom kaw lub qhov dej.

Pa sucker rods muaj cov cuab yeej tsim khoom yooj yim, tus nqi qis, me me txoj kab uas hla, thiab daim ntawv thov dav. Lawv cov nqi siv nyiaj ntau dua 90% ntawm cov pas nrig twj tso kua mis. Feem ntau, cov pa hlau nqus cov pas nrig tau muab faib ua plaub qib: qib C, qib D, qib K thiab qib H.

Class C sucker pas nrig: siv nyob rau hauv qhov dej ntiav thiab lub teeb load.

Class D sucker rods: Steel sucker rods siv nyob rau hauv nruab nrab- thiab hnyav-duty roj qhov dej.

Class K sucker pas nrig: steel sucker pas nrig siv nyob rau hauv corrosive lub teeb thiab nruab nrab load roj qhov dej.

Class K thiab D sucker rods: Steel sucker rods nrog corrosion kuj ntawm K-class sucker rods thiab txhua yam khoom ntawm D-class sucker rods.

Class H sucker pas nrig: steel sucker pas nrig siv nyob rau hauv hnyav thiab hnyav load roj qhov dej.

Qib A thiab B yog fiber ntau reinforced yas (iav fiber ntau reinforced yas) sucker rods: cov khoom tseem ceeb ntawm lub cev pas nrig yog fiberglass reinforced yas, thiab ib tug hlau sib koom tes yog ntsia rau ntawm ob kawg ntawm lub sucker pas nrig lub cev. Lub fiberglass sucker pas nrig qauv yog tsim los ntawm fiberglass pas nrig lub cev thiab steel pob qij txha nrog cov txheej txheem sab nraud ntawm tus pas nrig nqus ntawm ob qho kawg. Nws yog lub teeb yuag, corrosion-resistant, tuaj yeem ua tiav kev mus ncig, thiab tuaj yeem siv rau hauv nruab nrab cov roj twj tso kua mis kom ua tiav qhov tob tob.