Flow calibration system and method

A technology for calibrating systems and flow rates, applied in testing/calibration devices, liquid/fluid solids measurement, measurement devices, etc., can solve the problem of low accuracy of flowmeters, achieve multiple test pipe lengths, high measurement efficiency, and improve stability Effect

Pending Publication Date: 2021-06-04
PETROCHINA CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present application provides a flow calibration system and method, which can solve the problem of low accuracy of the flow meter in the related art

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Embodiment Construction

[0087] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0088] figure 1 is a schematic diagram of a flow calibration system shown according to an exemplary embodiment, such as figure 1 As shown, the flow calibration system includes: a first measurement unit 11 , a second measurement unit 12 , a mixing unit 13 and a third measurement unit 14 , and the third measurement unit 14 includes a flow meter 141 . Wherein, the flow meter may be a two-phase flow meter or other types of flow meters, which is not limited in this application.

[0089] The first measuring unit 11 is connected to the mixing unit 13 , and the mixing unit 13 is connected to the third measuring unit 14 ; the second measuring unit 12 is connected to the mixing unit 13 .

[0090] Wherein, the first measuring unit 11 , th...

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Abstract

The invention discloses a flow calibration system and method, and belongs to the field of flow measurement. In the flow calibration system, a first measurement unit is connected with a mixing unit, and the mixing unit is connected with a third measurement unit; a second measurement unit is connected with the mixing unit; the first measurement unit measures the first flow of the first dry natural gas; the second measurement unit measures the second flow of the first liquid; the first dry natural gas and the first liquid are mixed in the mixing unit to form wet natural gas, the wet natural gas enters the third measuring unit, and the flow meter measures the wet natural gas to obtain a flow parameter; and the flow meter is calibrated according to the first flow, the second flow and the flow parameter. The two-phase flow of the wet natural gas is simulated by filling the liquid into the dry natural gas, the flowmeter is calibrated by using the wet natural gas, the flowing states of the natural gas and the liquid in the wet natural gas can be well simulated, the measurement efficiency is high, the measurement result is accurate, and the energy consumption is low.

Description

technical field [0001] The present application relates to the field of flow measurement, in particular to a flow calibration system and method. Background technique [0002] The flow rate of natural gas is an important index for the comprehensive evaluation of natural gas wells. In the process of extracting natural gas, it is usually necessary to calibrate the flowmeter before using it by generating wet gas. [0003] At present, most commonly used flowmeters use air and water as the test medium. After mixing air and water, wet air is formed. The flowmeter is used to measure the flow rate of wet air. According to the actual flow rate of air and water, and the flow rate measured by the flowmeter, Calibrate the flowmeter. [0004] However, the flow states of wet air and wet natural gas are quite different, and the above-mentioned calibrated flowmeter still has a certain deviation in the measurement of wet natural gas, and the accuracy is not high. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F25/00
CPCG01F25/15
Inventor 张强王强周芳李一枚孔波陈荟宇任佳段继芹刘丁发周刚王辉
Owner PETROCHINA CO LTD
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