LG系列节流装置
一、概述
LG系列节流装置是与差压计配套使用的，用于测量液体、蒸汽、气体的流量。广泛的应用在石油、化工、冶金、电力和轻工等工业部门。
节流装置分孔板、喷嘴、流量管三大类品种，具有结构简单、精度高、可靠性好、应用范围广等特点。
作为节流装置专业生产厂家，我公司曾参与起草制订了差压式流量计国家计量检定规程。我公司生产的节流装置以品种全，生产工艺成熟，可靠性好，人无我有，人有我全，人全我优见长。
二、节流装置型号的编制
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LG系列节流装置代号、型号的编制积技术参数和性能: L（流量表）+G（节流装置）+节流元件+取压方法+取压形式+公称压力．公称通径．组成结构 (如:LGBJH1.0-100-1 LGQJK1.0-500-14 LGBFK10-200-21等) |
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| 节流元件: B－标准孔板； |
取压方法： J－角接取压法； |
取压形式: H－环室； |
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| 组成结构： 图１－图２６（详见产品的选型样本）
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| 公称压力系列：0.25 0.6 1.0 1.6 2.5 4.0 6.4 10 16 18.4 20 22 23 28 32
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| 公称通径系列: 15 20 25 32 40 50 65 80 100 125 150 175 200 225 250 300 350 400 450 500 600 700 800 900 1000 1200 1400 1600 1800 2000
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类别
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取压方式
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名称
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型号
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技 术 参 数 |
供货范围安装图
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技术标准
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公称压力（MPa）
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公称通径（mm）
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直径比（ß） | 雷诺数（Re） | ||||||
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孔
板 |
角
接
取
压
法 |
标
准
孔
板 |
LGBJH1.0-1
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1.0
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50-400
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0.20-0.75 0.20-0.45 >0.45 |
>=5000 >=10000 |
图1
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GB/T2624-93(即ISO5167-1-91)
D<50mm及D>1000mm执行YY(厂标) |
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LGBJH2.5-1
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2.5
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50-400
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LGBJH4.0-2
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4.0
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50-400
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图2
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LGBJH6.4-2
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6.4
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50-400
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LGBJH10-3
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10
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50-400
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图3
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LGBJH20-3
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20
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50-250
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LGBJH1.0-4
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1.0
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50-400
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图4
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LGBJH2.5-4
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2.5
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50-400
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LGBJH4.0-5
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4.0
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50-400
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图5
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LGBJH6.4-5
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6.4
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50-400
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LGBJH1.0-6
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1.0
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50-400
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图6
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LGBJH2.5-6
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2.5
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50-400
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LGBJH4.0-7
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4.0
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50-400
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图7
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LGBJH6.4-7
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6.4
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50-400
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LGBJH10-8
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10
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175-250
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图8
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LGBJH18.4-8
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18.4
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45-250
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LGBJH23-8
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23
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45-300
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LGBJH28-8
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28
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45-300
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LGBJK1.0-9
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1.0
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50-400
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图9
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LGBJK2.5-9
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2.5
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50-400
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LGBJK4.0-10
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4.0
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50-400
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图10
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LGBJK6.4-10
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6.4
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50-400
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LGBJK0.25-11
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0.25
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450-1600
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图11
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LGBJK0.6-11
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0.6
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450-1400
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LGBJK1.0-11
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1.0
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450-1200
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LGBJK1.6-11
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1.6
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450-1200
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LGBJK2.5-11
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2.5
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450-800
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双孔板
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LGSJH1.0-12
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1.0
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50-400
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0.32-0.77 | 3000-16000 |
图12
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YY(厂标)
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LGSJH2.5-12
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2.5
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50-400
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透镜孔板
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LGTJK22-13
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22
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15-150
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0.20-0.75 | 5000-10000 |
图13
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LGTJK32-13
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32
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15-150
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圆缺孔板
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LGQJK0.25-14
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0.25
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50-1600
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0.32-0.85 | 5000-200000 |
图14
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LGQJK0.6-14
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0.6
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50-1400
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LGQJK1.0-14
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1.0
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50-1200
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LGQJK1.6-14
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1.6
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50-1200
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LGQJK2.5-14
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2.5
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50-800
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小孔板
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LGXJH1.0-15
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1.0
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15-40
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0.15-0.75 | 2000-1000000 |
图15
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LGXJH2.5-15
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2.5
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15-40
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LGXJH6.4-16
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6.4
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15-40
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图16
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法
兰 取 压 法 |
标
准 孔 板 |
LGBFK1.0-17
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1.0
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50-400
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0.20-0.75 >0.45 |
>1260ß |
图17
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GB/T2624-93
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LGBFK2.5-17
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2.5
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50-400
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LGBFK4.0-18
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4.0
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50-400
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图18
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LGBFK6.4-18
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6.4
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50-400
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LGBFK6.4-19
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6.4
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50-400
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图19
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LGBFK10-19
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10
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50-300
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LGBFK16-19
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16
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50-300
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LGBFK6.4-20
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6.4
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50-400
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图20
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LGBFK10-20
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10
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50-300
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LGBFK16-20
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16
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50-300
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LGBFK6.4-21
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6.4
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50-400
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图21
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LGBFK10-21
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10
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50-300
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LGBFK16-21
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16
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50-300
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小孔板
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LGXFK2.5-22
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2.5
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15-40
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0.15-0.75 | 2000-1000000 |
图22
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YY(厂标)
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LGXFK6.4-22
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6.4
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15-40
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LGXFK10-22
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10
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15-40
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LGXFK2.5-23
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2.5
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15-40
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图23
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LGXFK6.4-24
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6.4
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15-40
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图24
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喷
嘴 |
角
接 取 压 法 |
标
准 喷 嘴 |
LGPJH1.0-1
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1.0
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50-400
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0.30-0.80 0.30-0.44 0.44-0.80 |
20000-10000000 70000-10000000 |
图1
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GB/T2624-93
D<50mm 执行YY(厂标) |
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LGPJH2.5-1
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2.5
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50-400
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LGPJH4.0-2
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4.0
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50-400
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图2
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LGPJH6.4-2
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6.4
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50-400
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LGPJH10-3
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10
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50-400
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图3
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LGPJH20-3
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20
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50-250
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LGPJH1.0-4
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1.0
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50-400
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图4
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LGPJH2.5-4
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2.5
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50-400
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LGPJH4.0-5
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4.0
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50-400
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图5
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LGPJH6.4-5
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6.4
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50-400
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LGPJH1.0-6
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1.0
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50-400
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图6
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LGPJH2.5-6
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2.5
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50-400
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LGPJH4.0-7
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4.0
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50-400
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图7
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LGPJH6.4-7
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6.4
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50-400
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LGPJH10-8
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10
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175-250
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图8
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LGPJH18.4-8
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18.4
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45-250
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LGPJH23-8
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23
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45-300
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LGPJH28-8
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28
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45-300
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圆
弧 喷 嘴 |
LGYJH1.0-1
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1.0
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50-400
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0.25-0.70 | 200-200000 7000-60000 |
图1
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YY(厂标)
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LGYJH2.5-1
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2.5
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50-400
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LGYJH4.0-2
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4.0
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50-400
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图2
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LGYJH6.4-2
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6.4
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50-400
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LGYJH10-3
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10
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50-400
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图3
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LGYJH20-3
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20
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50-250
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LGYJH1.0-4
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1.0
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50-400
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图4
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LGYJH2.5-4
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2.5
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50-400
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LGYJH4.0-5
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4.0
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50-400
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图5
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LGYJH6.4-5
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6.4
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50-400
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LGYJH1.0-6
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1.0
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50-400
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图6
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LGYJH2.5-6
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2.5
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50-400
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LGYJH4.0-7
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4.0
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50-400
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图7
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LGYJH6.4-7
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6.4
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50-400
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LGYJH10-8
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10
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175-250
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图8
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LGYJH18.4-8
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18.4
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45-250
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LGYJH23-8
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23
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45-300
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LGYJH28-8
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28
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45-300
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小喷嘴(圆弧式)
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LGNJH1.0-15
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1.0
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15-40
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0.28-0.65 | 200-200000 650-76000 |
图15
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LGNJH2.5-15
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2.5
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15-40
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LGNJH6.4-16
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6.4
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15-40
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图16
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法
兰 取 压 法 |
LGNFK2.5-22
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2.5
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15-40
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图22
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LGNFK6.4-22
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6.4
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15-40
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LGNFK10-22
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10
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15-40
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LGNFK2.5-23
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2.5
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15-40
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图23
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LGNFK6.4-24
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6.4
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15-40
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图24
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径距法
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长径喷嘴
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LGCGK20-25
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20
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100-400
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0.2-0.8 | 10000-10000000 |
图25
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GB/T2624-93
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流量管
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0.5D/0.5d法
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文丘里管
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LGWAH0.6-26
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0.6
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200-1200
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0.4-0.7 | 200000-2000000 |
图26
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LGWAH1.0-26
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1.0
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200-1200
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