Downhole cuab tam siab ntsuas acid thiab alkali resistant O-ring FKM90
Khoom Khoom Khoom Khoom
1. Zoo heev acid thiab alkali tsis kam
Fluororubber (FKM) lossis perfluoroether roj hmab (FFKM) cov ntaub ntawv feem ntau yog siv. Fluororubber muaj kev ua siab ntev rau feem ntau cov inorganic acids, organic acids, alkalis, hydraulic roj, thiab lwm yam. Perfluoroether roj hmab muaj cov tshuaj tiv thaiv zoo dua thiab tuaj yeem tiv thaiv corrosion los ntawm yuav luag txhua yam tshuaj lom neeg xws li cov kua qaub muaj zog (xws li hydrofluoric acid, sulfuric acid, thiab lwm yam). thiab muaj zog alkalis (xws li sodium hydroxide, thiab lwm yam), thiab tuaj yeem tswj kev ua haujlwm ruaj khov hauv cov tshuaj lom neeg hauv av.
2. Zoo elasticity thiab sealing kev ua tau zoo
Ob leeg cov ntaub ntawv roj hmab muaj siab elasticity. Lub O-ring cia siab rau nws tus kheej elastic deformation los sau qhov sib txawv sealing. Thaum lub downhole siab hloov, nws tuaj yeem haum nruj rau lub sealing nto ntawm lub ntsuas siab kom tiv thaiv kom tsis txhob tawm. Txawm tias nyob rau hauv ob qho kev cuam tshuam ntawm lub siab thiab tshuaj lom neeg tshaj tawm rau lub sijhawm ntev, nws tuaj yeem tswj xyuas qhov kev ua tau zoo rov qab los xyuas kom meej lub zog ntawm cov nyhuv sealing.
3. Zoo kub kuj
Fluororubber tuaj yeem ua haujlwm hauv qhov kub ntawm -20 degree mus rau 200 degree, thiab perfluoroether roj hmab muaj qhov dav ua haujlwm kub ntawm -30 degree mus rau 260 degree . Qhov kub ntawm qhov chaw hauv av sib txawv heev, thiab cov ntaub ntawv no tuaj yeem hloov mus rau qhov kub thiab txias ib puag ncig, thiab yuav tsis ua rau cov roj hmab tawv los yog muag vim qhov kub thiab txias, yog li cuam tshuam rau kev sib khi.
Khoom parameters
1. Qhov ntev
Peb muab ntau qhov ntau thiab tsawg tus qauv, nrog rau sab hauv diameters li ntawm ob peb millimeters mus rau kaum millimeters, kom ua tau raws li qhov yuav tsum tau sib khi ntawm ntau hom kev ntsuas siab. Piv txwv li, qhov ntau thiab tsawg inner inch yog 3mm, 5mm, 8mm, thiab lwm yam., thiab cross-sectional diameters feem ntau yog 1.5mm, 2mm, 2.5mm, thiab lwm yam, uas tuaj yeem xaiv raws li qhov tshwj xeeb interface loj ntawm lub ntsuas siab thiab qhov tsim ntawm lub sealing groove.
2. Hardness
Lub hardness ntau yam yog feem ntau ntawm 60 thiab 80 degrees Shore A. Tsim nyog hardness yuav xyuas kom meej tias O-ring tau yooj yim nkag mus rau hauv lub sealing zawj thaum lub sij hawm installation, thiab muaj peev xwm tiv taus lub downhole siab thaum lub sij hawm ua hauj lwm thiab tswj zoo sealing kev sib cuag.
3. Compression thiab extension
Tus nqi compression feem ntau yog nyob nruab nrab ntawm 15% thiab 30%, uas tuaj yeem ua rau O-ring tsim txaus sealing kev sib cuag. Tus nqi elongation tuaj yeem ncav cuag 100% mus rau 300%, kom ntseeg tau tias O-ring yuav tsis tawg thaum lub sijhawm teeb tsa thiab tuaj yeem ncab, tswj kev sib khi zoo.
Acid thiab alkali resistant O-ring FKM90 accessories rau downhole cuab tam siab ntsuas
FKM90 fluororubber muaj cov kua qaub zoo thiab alkali tsis kam thiab tuaj yeem tiv taus kev yaig ntawm ntau yam muaj zog acids thiab alkalis hauv qhov dej. Cov tshuaj lom neeg xws li sulfuric acid thiab sodium hydroxide yog qhov nyuaj rau kev puas tsuaj, uas tuaj yeem ua kom muaj kev sib khi ntawm lub ntsuas siab hauv cov cheeb tsam hnyav.
O-ring muaj elasticity zoo thiab sealing kev ua tau zoo. Nws lub siab elasticity tso cai rau nws kom haum nruj rau qhov sealing nto ntawm lub ntsuas siab tom qab kev teeb tsa. Txawm hais tias lub downhole siab hloov, nws tuaj yeem tso siab rau nws tus kheej elastic deformation los ua kom lub sealing qhov sib txawv thiab tiv thaiv cov kua dej. Nws tseem tuaj yeem tswj xyuas qhov kev ua haujlwm ruaj khov rov ua haujlwm tom qab siv mus ntev, ua kom muaj kev sib khi ntev ntev.
Hais txog qhov kub thiab txias, FKM90 fluororubber tuaj yeem ua haujlwm ib txwm nyob hauv qhov kub ntawm -20 degree txog 200 degree . Txawm hais tias qhov kub nyob hauv av kub dhau los yog qis dhau, nws yuav tsis ua rau cov roj hmab kom tawv los yog muag, yog li ib txwm tswj xyuas kev sib khi zoo thiab ua kom muaj kev ua haujlwm zoo ntawm lub ntsuas siab.
Loj
Muaj ntau qhov ntau thiab tsawg, nrog rau sab hauv diameters li ntawm ob peb millimeters mus rau kaum millimeters, thiab tseem muaj ntau txoj kev xaiv rau txoj kab uas hla hla, xws li puab diameters ntawm 3mm, 5mm, 8mm, thiab lwm yam, thiab cross-sectional diameters. ntawm 1.5mm, 2mm, 2.5mm, thiab lwm yam, uas tuaj yeem hloov kho rau cov ntsuas siab ntawm cov qauv sib txawv. Lub hardness feem ntau yog nyob ib ncig ntawm 90 degrees Shore hardness. Qhov tsim nyog hardness ua rau nws yooj yim rau nruab, thiab nws muaj peev xwm tiv taus downhole siab thiab xyuas kom meej sealing zoo siab. Tus nqi compression feem ntau yog nyob nruab nrab ntawm 15%-30%, thiab tus nqi elongation tuaj yeem ncav cuag 100%-300%. Thaum lub sij hawm installation thiab ua tau stretching, O-ring tsis yooj yim rau tawg thiab muaj peev xwm tuav lub sealing kev ncaj ncees.
| Khoom siv | Kev tiv thaiv zoo heev rau kev tshaj tawm, ozone thiab kev laus, ruaj khov rau cov roj, roj av thiab roj, aliphatic thiab aromatic hydrocarbons, tab sis tsis ruaj khov rau cov kuab tshuaj polar, tsis tshua muaj molecular hnyav organic acids, glycol-based brakes kua, ammonia, amines, alkalis thiab superheated chav |
| Hardness | Ntug hardness 90 |
| Tensile zog | 15.7 MPa |
| Elongation thaum so | 122% |
| Compression teeb | 79200 vib nas this ntawm 200 degree, compression teem 12% |
| Qhov kub thiab txias | -20 degree rau 200 degree |
| Qhov ntom | 1.78g / ct |
| Mooney viscosity | 90 ntawm 121 degree |
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