Balance valve.doc

BalanceValves—ForceFeedLube
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Selecting,Installing,andSettingBalanceValves
andPressureGauges-ForceFeedLube
选型，安装，设置平衡阀及压力表——强制注油润滑
NOTE:SetallArielsuppliedbalancevalvestothisdocument(seePage2).Removeanddiscard
anylockwireonbalancevalves.Donotlockwireaftersettingbalancevalves.
注意：设置Ariel提供的所有平衡阀。拆掉平衡阀上的任何铅封线。在设置平衡阀后没有铅封线
SelectingBalanceValvesandPressureGauges选择平衡阀和压力表
Balancevalvesareusedinhighdifferentialpressuredistributionblockapplicationstoreducesystemproblemssuchasbypassing,no-flowswitcherrors,orblownrupturediscs.Since9/98,Arielsuppliesbalancevalvesandpressuregaugesonnewcompressorswithhighdifferentialforcefeedlubepressures.Balancevalvesaddpressuretodistributionblockdischargeportswhendifferentialpressureexceeds1200psi(8300kPa).
平衡阀应用于高压差分配块，以减少系统故障，如旁路，无液流开关，爆破片等问题。自9/98以来，Ariel对于新生产的高压差强制润滑压缩机组，配备了平衡阀及压力表。平衡阀与压力分布块压差超过1200磅（8300千帕）时，通过卸压口卸压。

Ifacompressorexperiencesexcessivedistributionblockdifferentialpressure,selectandinstallbalancevalves(andpressuregauges,ifrequired)bythefollowingprocedure:
如果压缩机存在较多的分配块压差，选择并安装平衡阀，步骤如下：

1.Determinelubepointlinepressures,eitherbymeasurementonthecompressorwithacalibrated
pressuregauge,orbycalculationofexpectedpressuresforagivendistributionblocksystem:
确定润滑油点的压力，无论是在压缩机上用压力表进行测量，还是通过预期计算的压力。

a.Expectcylinderborelubelinepressuremidwaybetweensuctionanddischargepressure.Calculate:
P=(Pd+Ps)÷2
预计气缸体润滑油管线压力在进气与排气之间，计算P=(Pd+Ps)/2

b.Forsinglelubepackings,expectlubelinepressuretoequalsuctionpressureofadouble-acting
orcrankendcylinder.Thisisalsotruefortheinnerlubepointonhigh-pressure,twolubepointpackings.
对于单润滑填料，双作用或轴段作用的气缸，预计润滑油管线压力等于进气压力。这也适合于高压、双润滑点填料的内注油点。

c.Fortheouterlubepointonhigh-pressure,twolubepackings,assumelubelinepressureiszero.
对于双注油点的外端润滑，润滑油管线压力为零。

d.Forintermediatepackinglubepointsonlongtwo-compartmentdistancepieces,thelubeline
pressureiszero.
对于双腔室的间距块，中间的润滑油管线压力为零。
e.Forinletgasflushinglines,commonlyusedinsourgasapplications,lubelinepressureequals
suctionpressure.
对于入口吹洗管线，通常应用于酸气，润滑油管线压力