Paddle Blind Flange (feem ntau tsuas yog hu ua Spade, Line Blind, lossis Solid Blank) yog ib qho tseem ceeb ntawm cov kav dej siv rau kev sib cais zoo ntawm cov kav dej. Tsis zoo li Spectacle Blind (uas ua ke nrog lub qhov muag tsis pom kev thiab qhov chaw nyob hauv ib chav), Paddle Blind yog ib qho, cov khoom siv uas nyob ib leeg.
Paddle Blind yog dab tsi?
Txhais:Nws yog ib lub tiaj tiaj, khoom hlau phaj uas tsis muaj qhov nyob hauv nruab nrab, tsim kom haum ntawm ob lub yeeb nkab flanges kom tsis txhob muaj dej ntws.
Qhov tsos:Nws zoo li "paddle" los yog ib qho khoom siv disc. Nws feem ntau muaj ibtablos yogkovnthuav tawm ntawm ntug.
Muaj nuj nqi:Thaum bolted ntawm flanges, nws tsim ib qho kev thaiv lub cev. Nws yog txoj hauv kev nyab xeeb tshaj plaws rau kev cais cov kab rau kev saib xyuas, kho, lossis kev nyab xeeb kaw vim, tsis zoo li lub valve, nws tsis tuaj yeem xau sab hauv lossis raug qhib.
Qhov txawv tseem ceeb: Paddle Blind vs. Spectacle Blind
|
Feature |
Paddle dig muag (Spade) |
Qhov muag tsis pom kev (Daim duab-8) |
|
Kev sib xyaw |
Ib qho nyuaj disc. |
Ob daim txuas nrog: ib lub qhov muag tsis pom kev + ib lub nplhaib qhib (spacer). |
|
Kev ua haujlwm |
Yuav tsum yogtshem tawm tag nrhotso cai ntws. Ib caisSpacer Nplhaibyuav tsum tau muab tso rau restore ntws. |
Tig 180 degreenyob rau hauv qhov chaw hloov ntawm "Dis muag" thiab "Qhib" txoj haujlwm. |
|
Kev siv Scenario |
Siv rauntev -kev nyob ib leeglos yog thaum twg txoj kab yuav nyob twj ywm rau lub sij hawm txuas ntxiv. |
Siv raunquag hloovnruab nrab ntawm lub xeev qhib thiab kaw (piv txwv li, hloov raws caij nyoog, kev saib xyuas tsis tu ncua). |
|
Cia |
Xav tau qhov chaw khaws cia rau qhov muag tsis pom thiab lub nplhaib sib cais. |
Tus kheej-muaj; tsis muaj qhov xoob kom poob. |
|
Nqi |
Feem ntautus nqi qis dua(cov khoom siv tsawg dua, kev tsim khoom yooj yim). |
Tus nqi siab dua (ntau cov khoom siv, ntau dua machining). |
|
Qhov hnyav |
Lub teeb (tsuas yog ib qho). |
Heavier (nrog rau qhov hnyav ntawm lub nplhaib spacer). |
Tsim & Qauv
- Txheem:Feem ntau manufactured raws liASME B16.48(Line Blinds).
- Cov chav kawm siab:Muaj nyob rau hauv tag nrho cov chav kawm ANSI:150, 300, 600, 900, 1500, 2500.
Nco tseg:Raws li chav kawm siab nce, lub thickness ntawm paddle qhov muag tsis pom kev nce ntxiv kom tsis txhob hneev nti hauv siab.
- Hom ntsej muag:
- Raised ntsej muag (RF):Txheem rau feem ntau cov chav kawm.
- Lub ntsej muag tiaj tus (FF):Feem ntau siv rau Chav Kawm 150.
- Lub nplhaib hom Joint (RTJ):Yuav tsum tau ua rau Chav Kawm 900 thiab siab dua (siab siab). Lub qhov muag tsis pom paddle yuav muaj qhov sib txuam RTJ groove machined rau hauv nws.
- Lub "Tab" lossis "Handle":
- Feem ntau Paddle Blinds suav nrog ib lub tab me me uas txuas mus rau lub voj voog bolt.
- Lub hom phiaj:Nws pab hauv kev tuav / kev teeb tsa thiab ua haujlwm ua ib qhoqhov taw qhia qhov muag. Yog tias lub tab tab tom tawm, kab yuav dig muag. Qee qhov chaw pleev xim rau lub tab liab rau "Closed / Dig Muag" thiab ntsuab rau "Qhib" (txawm hais tias nrog lub qhov muag tsis pom kev, yog tias qhov muag tsis pom, kab yog ib txwm kaw).
Khoom siv
Paddle blinds yog tsim nyob rau hauv txhua yam khoom siv kom haum rau cov kav dej:
- Carbon Steel:ASTM A105, A350 LF2 / LF3.
- Stainless hlau: 304/304L, 316/316L, 321, 347.
- Duplex / Super Duplex:F51, F53, F55 (rau kev pabcuam offshore / corrosive).
- Hlau alloy:F11, F22, F91 (rau siab kub / siab).
- Exotics:Monel, Inconel, Hastelloy, Titanium.
Installation txheej txheem (Critical Safety Step)
Txhim kho Paddle Blind yog txheej txheem kev koom tes ntau dua li tig lub Spectacle Blind:
1.Depressurize & Drain: Xyuas kom cov kab muaj kev nyab xeeb.
2.Unbolt: Tshem tag nrho cov bolts los ntawm flange kev twb kev txuas.
3.Separate: Siv cov cuab yeej flange spreader kom maj mam cais cov flanges.
4. Tshem tawm Spacer (yog tias tam sim no): Yog tias txoj kab tau qhib yav dhau los, yuav tsum tau muab tshem tawm ib lub nplhaib Spacer cais.
5.Insert Paddle Blind: Ntxig rau cov khoom Paddle Blind. Xyuas kom cov gaskets raug muab tso rau ntawm ob sab ntawm qhov muag tsis pom.
6.Re-bolt & Torque: Re- ntxig bolts thiab nruj rau qhov tshwj xeeb torque qhov tseem ceeb uas yuav tsum tau muaj rau cov chav kawm siab thiab hom gasket.
7.Tagging: Txuas lub cim "Line Blinded" rau tus kov rau kev taug qab kev nyab xeeb (Lockout/Tagout - LOTO).
Thaum twg Xaiv Paddle Dig Muag?
Koj yuav tsum hais kom Paddle Blind tsis yog Spectacle Blind thaum:
- Lub ntsiab lus cais tsis tshua hloov pauv (piv txwv li, ib xyoos ib zaug thaum lub sijhawm hloov pauv).
- Kev siv nyiaj yog qhov txwv (Paddle Blinds + cais Spacers yog pheej yig dua li Spectacle Blinds).
- Qhov chaw txwv txwv tsis pub lub vojvoog tig yuav tsum tau ua rau Spectacle Blind.
- Txoj kab uas hla ntawm lub raj xa dej loj heev (NPS 24 "+), qhov twg Spectacle Blind yuav txwv tsis pub hnyav thiab nyuaj rau tig ntawm tes.
Summary rau Kev Muag Khoom
Yog tias koj tab tom thov ib qho kev tsocai, xyuas kom koj qhia meej:
- Hom:Paddle Blind (Tshuaj)THIABSpacer Ring (yog tias koj xav tau qhib kev teeb tsa ib yam nkaus).
- Loj:NPS (eg, 12").
- Qib Siab:(piv txwv li, Chav Kawm 300, Chav Kawm 1500).
- Khoom siv:(piv txwv li ASTM A105).
- Hom ntsej muag:(RF, FF, lossis RTJ).
- Txheem:ASME B16.48.
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