Upload
nguyenkhuong
View
220
Download
2
Embed Size (px)
Citation preview
valveITsrl viaCadutidiReggioEmilia,27 40033|CasalecchiodiReno|Bologna|Italy VATIT03007691201 ph+39.051.9912714|[email protected] www.valveit.com sharecapitalEur100.000,00
Flownozzleflowmeters1.GeneralDescriptionAflownozzleistobeinstalledinapipeline.Whileafluidisflowingthroughthispipelineduetothenozzleapressuredifferenceisgenerated.Fromthevalueofthispressuredifference,whichcanbemeasuredbyadifferentialpressuretransmitter,theflowratecanbecalculated.Flow nozzles are designed to work with high pressure and high temperature applications. Theirconstruction ismore rugged than orifices. They allow the flowofmore than 60 percent greater volumethanorificesdo.Theyarelesssensibleagainstsolidparticlesinthefluid.Also,theyareapplicableforhigh-speedflowingfluids.Wecanprovidethenozzlesassembledinameasurementsection,inlet4Dandoutlet2D.AvailableStandards:
-ISO-5167-ISA1932–Venturi-Nozzles–ASMEMFC-3-ASMEPTC-6
valveITsrl viaCadutidiReggioEmilia,27 40033|CasalecchiodiReno|Bologna|Italy VATIT03007691201 ph+39.051.9912714|[email protected] www.valveit.com sharecapitalEur100.000,00
2.SpecificationsISO-5167Nozzletype: Longradiusnozzles 1.Highratio:0,25≤β≤0,8 2.Lowratio:0,2≤β≤0,5 ISA1932Nozzle,Venturi-NozzleASMEMFC-3M,ASMEPTC-6Nozzle 1.Highratio:0,5≤β≤0,8
2.Lowratio:0,2≤β≤0,53.Lowratio,withthroattap:0,25≤β≤0,5
PressureTaps:
PipeWallTapsatD&D/2,ThroatTap
Throatcalculationcodes: -ISO5167
-ASMEMFC-3M -L.K.SPINK -AGANo.3Constructiontypes:
-Weld-intype -Holdingringtype
-Knockpintype -FlangedtypeEndconnection: -Butt-weldtype -Flangedtype
valveITsrl viaCadutidiReggioEmilia,27 40033|CasalecchiodiReno|Bologna|Italy VATIT03007691201 ph+39.051.9912714|[email protected] www.valveit.com sharecapitalEur100.000,00
3Nozzletypes3.1ISO5167NozzletypesinfullcompliancewithISO-5167–TwotypesoflongradiusnozzlesHighrationozzlesLowrationozzle
3.2ASMEMFC-3M-NozzletypesinfullcompliancewithASMEMFC-3M-ASMEPTC6forthroattap-3Typesoflongradiusnozzles:
valveITsrl viaCadutidiReggioEmilia,27 40033|CasalecchiodiReno|Bologna|Italy VATIT03007691201 ph+39.051.9912714|[email protected] www.valveit.com sharecapitalEur100.000,00
4NozzleDesigns4.1FlangedTypeFlangedtypeflownozzlesareinsertedbetweenpipeflanges.
valveITsrl viaCadutidiReggioEmilia,27 40033|CasalecchiodiReno|Bologna|Italy VATIT03007691201 ph+39.051.9912714|[email protected] www.valveit.com sharecapitalEur100.000,00
4.2Weld-inFlowNozzlesWeld-in flow nozzles are used where flanges are not applicable, such as high temperature and highpressureapplications.
4.3HoldingRingTypeTheholding ring flownozzledesigneliminates theweldingofdissimilarmaterials,because the ring,pinsandpipearemadeofcompatiblematerial.
valveITsrl viaCadutidiReggioEmilia,27 40033|CasalecchiodiReno|Bologna|Italy VATIT03007691201 ph+39.051.9912714|[email protected] www.valveit.com sharecapitalEur100.000,00
4.4Knock-PinTypeKnock-pinflownozzlesavoidweldingoperationbetweendissimilarmaterials.
4.5VenturiTypeTheprofileofaVenturi-nozzleisaxis-symmetric.Itconsistsofaconvergentsectionwitharoundedprofile,acylindricalthroatandadivergentsection.TheupstreamfaceisidenticalwiththatofanISA1932nozzle.Theupstreamtappingsshallbecornertappings.Thetappingsmaybelocatedinthepipeoritsflangesorincarrierrings.Thethroatpressuretappingsshallbecompriseatleast4singlepressuretappings.Piezometerringonrequestonly.
valveITsrl viaCadutidiReggioEmilia,27 40033|CasalecchiodiReno|Bologna|Italy VATIT03007691201 ph+39.051.9912714|[email protected] www.valveit.com sharecapitalEur100.000,00
5TypicalConstructionofFlowNozzlewithThroatTap[ASMEPTC-6-Standard]
6PressureTapping