| 摘要 |
The invention relates to means for measurement of gas for gas distribution stations of main gas ducts of gas-transportation system for registration of natural gas. The unit for measurement of gas flow rate includes measuring pipeline of flow rate meter with straight sections of pipeline, local supports and narrowing device, in the unit additionally to measuring pipeline of flow rate meter on basis of narrowing device installed directly in gas duct sections of pipelines are connected by distributed parallel-in series layout by which through the branch measuring pipeline of reference flow rate meter is connected, this through a branch is connected to measuring pipeline of flow rate meter with connecting pipeline, at that in measuring pipeline of flow rate meter, in direction of displacement of gas, after the branch in sequence are mounted a tap, straight section with device for preparation of gas flow, narrowing device with calculator for flow rate, straight section with flange joint, branch, tap and branch, in measuring pipeline of reference flow rate meter after the branch in direction of gas motion in sequence are mounted a tap, branch, reference measuring complex, tap and branch, and on connecting pipeline at the middle tap is installed. The invention provides increase of accuracy of measurement of gas flow rate. |
