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一、立式金属罐静态计量交接不确定度数学模型1.交接油品质量Δm的数学模型根据静态计量交接流程,可以得到交接油品质量Δm的数学模型为Δm=m1-m2={(VB1+ΔVSP1×d20前4)×〔1+3α(t罐1-20)〕×VCF1×(ρ20前-1.1)-G}×(1-Ws1)-{(VB2+ΔVSP2×d20后4)×〔1+3α(t罐2-20)〕×VCF2×(ρ20后-1.1)-G}×(1-Ws2)(1)式中:Δm——油品计量交接质量值,kg;VB1——前尺液位高度下的总表载体积,m3;ΔVSP1——前尺罐内液位高度下装水引起的静压力容积增大值,m3;d20——前尺罐内油品密度与4℃纯水密度(取
First, the vertical metal tank static measurement transfer uncertainty mathematical model 1. Handover the mathematical model of Δm oil quality According to the static measurement of the transfer process, you can get the quality of the oil delivered Δm mathematical model Δm = m1-m2 = {(VB1 + ΔVSP1 × d20 first 4) × [1 + 3α (t tank 1-20)] × VCF1 × (ρ20 pre-1.1) -G} × (1-Ws1) - {(VB2 + ΔVSP2 × d20 after 4) × 〔1 + 3α (t tank 2-20)] × VCF2 × (ρ20 after -1.1) -G} × (1-Ws2) (1) Where: Δm-- measurement of the quality of the oil transfer, kg; VB1- - front table under the level of the total surface mount volume, m3; ΔVSP1 - Front foot tank liquid level height caused by the increase in the volume of static pressure water, m3; d20 - front foot tank oil density and 4 ℃ density of pure water (take