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Daim ntawv thov kev faib tawm valve gasket hom
2022-06-22
Valve daim ntawv thov kev faib tawm valve gasket hom Universal kev khiav hauj lwm valve General kev pab cuam li qub yog cov tsim rau feem ntau cov kev khiav hauj lwm uas tsis tshua muaj siab ntsuas nyob rau hauv ANSI chav kawm ntawv 150 txog 600 (inch DN16 rau DN100) thiab nruab nrab kub ntsuas ntawm -50 mus rau 650H (-46 rau 343 c ). ya corrosive media thiab zoo tib yam siab poob tsis ua cavitation thiab flash. Cov kev pabcuam dav dav yog tsim los nrog kev sib pauv hloov pauv thiab hloov pauv kom pab tau lawv siv rau hauv cov xwm txheej hnyav. Cov khoom siv lub cev tau teev tseg raws li carbon steel thiab stainless hlau. Daim duab 1.9 qhia cov lus dab neeg ntawm ob qhov kev pabcuam dav dav, ib qho ua haujlwm manually thiab ib qho tsis siv neeg. Kev ua haujlwm tshwj xeeb valve Cov kev pabcuam tshwjxeeb yog cov kev cai ua li qub tsim los rau ib daim ntawv thov uas cov txheej txheem ua haujlwm tsis tau xav txog. Vim nws qhov tshwj xeeb tsim thiab tsim khoom, nws tsuas yog ua tau raws li kev ua haujlwm tshwj xeeb thiab kev ua haujlwm. Qhov no feem ntau yog siv los cuam tshuam nrog qhov xav tau ntawm qhov ntsuas kub, qhov siab, lossis qhov nruab nrab hauv qhov ntsuas thib ob. FIG. 1.10 qhia tau hais tias lub valve tswj tau tsim nrog lub cev me me thiab cov spool ceramic los tuav cov ntxhia pob zeb xws li cov xuab zeb thiab cov cua kub siab. Kev pabcuam hnyav valve Kev ua haujlwm hnyav valve, uas muaj cov yam ntxwv tshwj xeeb los tswj cov khoom tsis haum, kev txhaj tshuaj ntawm kev poob siab uas ua rau muaj cavitation hnyav, flash, txhaws lossis suab nrov. Lub valve tuaj yeem tsim tau zoo ntawm lub ntiaj teb valve spool. Los yog tshwj xeeb disc; Los yog cov pob tshwj xeeb tuaj yeem koom nrog hauv cov twj tso kua mis kom txo lossis tiv thaiv kev cuam tshuam thaum ua haujlwm. Tsis tas li ntawd, cov neeg ua haujlwm lossis cov neeg ua haujlwm txheej txheem yuav tsum muaj cov actuators tshwj xeeb los kov yeej lub zog ntawm cov txheej txheem. FIG. 1.11 qhia tau hais tias qhov kev pabcuam hnyav muaj peev xwm tuav tau 1100H (593 c) kua calcium uas muaj ntau lub spool Kov siab poob nrog tshwj xeeb txias warping bonnet. Lub electro-hydraulic actuator muaj peev xwm ua tau 20,000 lb (889600N) ntawm thrust. Valve gaskets feem ntau siv gaskets yog non-metallic gaskets, semi-hlau gaskets thiab hlau gaskets. Non-metallic gasket tseem hu ua gasket, xws li asbestos roj hmab ntawv, roj hmab, ptfe, thiab lwm yam., gasket rau qhov kub thiab txias, siab tsis yog lub sijhawm siab. Semi-hlau gasket yog tsim los ntawm cov khoom siv hlau thiab cov khoom tsis yog hlau, xws li hloov tau graphite composite gasket, winding gasket, hlau coated gasket thiab lwm yam. Lub semi-hlau gasket bears ntau qhov kub thiab siab tshaj qhov tsis yog hlau gasket. Tag nrho cov hlau gaskets yog ua los ntawm cov hlau, xws li waveform, hniav zoo, elliptic, octagonal, lens ncoo, cone ncoo thiab lwm yam. Hlau gasket rau kev siv kub thiab kub siab. 1 Cov xwm txheej ntawm kev siv cov roj hmab uas tsis yog xim hlau Saib Daim duab 1-4-1 rau cov xwm txheej ntawm kev siv cov roj hmab uas tsis yog xim hlau Daim ntawv thov tej yam kev mob lub npe code siab qib MPA siv kub ℃ natural rubber nr2.0-50 ~ 90 chlorinated D roj hmab cr2.0 -40 ~ 100D nitrile roj hmab nbr2.0-30 ~ 110 styrene butadiene roj hmab sbr2.0-30 ~ 100 ethylene propylene roj hmab epdm2.0-40 ~ 130 fluorine roj hmab Viton2.0- 50 ~ 200 asbestos roj hmab ntawv XB50NY00XB4 .t