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Low gas content gas-liquid two-phase flow measuring apparatus based on capacitance sensor and standard venturi tube

A capacitive sensor, gas-liquid two-phase flow technology, applied in the direction of volume flow measurement device, mass flow measurement device, measurement device, etc. reliable results

Inactive Publication Date: 2008-04-16
王微微
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the ray density meter has safety problems and requires high operating conditions.

Method used

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  • Low gas content gas-liquid two-phase flow measuring apparatus based on capacitance sensor and standard venturi tube
  • Low gas content gas-liquid two-phase flow measuring apparatus based on capacitance sensor and standard venturi tube
  • Low gas content gas-liquid two-phase flow measuring apparatus based on capacitance sensor and standard venturi tube

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Experimental program
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Effect test

Embodiment Construction

[0011] After the gas-liquid two-phase flow to be measured enters the metering pipeline 1, it first passes through the capacitance sensor 2, which obtains the capacitance distribution on the pipeline section and sends the capacitance distribution value to the computer 8 through the A / D conversion card 7, and then the gas-liquid two-phase flow The two-phase flow passes through the flow mixer 3, and the flow mixer 3 makes the gas-liquid two-phase flow evenly mixed to become a homogeneous flow. The differential pressure sensor 5 is matched with the standard Venturi tube 4 for installation. The differential pressure signal is converted into a standard electrical signal and sent to the computer 8 through the A / D conversion card 7 . The temperature sensor 6 is used to detect the temperature T of the gas-liquid two-phase flow and convert the temperature signal into a standard electrical signal and send it to the computer 8 through the A / D conversion card 7 . A storage module is provi...

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Abstract

The present invention discloses a low air rate gas-liquid two-phase flow measuring device based on a capacity transducer and a standard venturi tube. The device consists of a metering conduit, a capacity transducer arranged in the front end of the metering conduit, a mixed flow device arranged in the middle of the metering conduit, a standard venturi tube and a temperature sensor arranged on the rear of the metering conduit, a differential pressure pickup connected with the standard venturi tube, an A / D transition card and a computer. The capacity transducer is connected with the computer through the A / D transition card. The invention is characterized by small volume, simple structure, convenient installation, relatively low loss of pressure, a plurality of acquirable measuring parameters, high flow measuring precision and good real-time. The invention is suitable for measurement of low air rate gas-liquid two-phase flow of oil, gas, etc.

Description

Technical field [0001] The invention relates to a low gas content rate gas-liquid two-phase flow measurement device based on a capacitance sensor and a standard Venturi tube. Background technique [0002] Gas-liquid two-phase flow widely exists in petroleum, chemical and other fields. The complexity of gas-liquid two-phase flow system brings many difficulties to the measurement of gas-liquid two-phase flow parameters such as flow rate, density and phase separation ratio. The detection of gas-liquid two-phase flow, density and phase separation holdup has attracted the attention of engineers and technicians and has become one of the hot and difficult research points in the field of gas-liquid two-phase flow. At present, the following four methods are mainly adopted for the detection of gas-liquid two-phase flow parameters: (1) The method of using traditional single-phase flow instruments combined with two-phase flow parameter measurement models. This method can directly apply...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/74G01F7/00G01F15/08G01F1/36G01F1/86
Inventor 王微微耿艳峰
Owner 王微微
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