Gas-liquid two-phase flow moisture content measuring device and measuring method

A gas-liquid two-phase flow and measuring device technology, which is applied in the direction of using microwaves to test moisture content, can solve the problems of time-consuming and low accuracy, and achieve the effects of low cost, small size, and easy connection and disassembly

Pending Publication Date: 2020-05-19
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Traditional measurement methods can only meet low accuracy, even if it can achieve high accuracy, it will take a lot of time and manpower

Method used

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  • Gas-liquid two-phase flow moisture content measuring device and measuring method
  • Gas-liquid two-phase flow moisture content measuring device and measuring method
  • Gas-liquid two-phase flow moisture content measuring device and measuring method

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Embodiment Construction

[0031]The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] The principle of microwave resonator to measure gas-liquid two-phase flow is that the change of water content will cause the change of the dielectric constant of the mixture. When the gas-water two-phase flow flows through the resonant cavity, the fluid acts on the resonant field, and the change of the dielectric constant causes the change of the resonant frequency of the resonant cavity. The relationship between the accurate solution and the dielectric constant of the mixture is used to measure the resonant frequency. Measurement of moisture content.

[0033] The present invention will be further described below in conjunction with the accompanying drawings. Such as figure 1...

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Abstract

The invention relates to a gas-liquid two-phase flow moisture content measuring device which comprises a resonant cavity, transition pipe sections which are positioned at two ends of the resonant cavity, and a circuit module which is used for measuring resonant frequency. The device is characterized in that the resonant cavity body is formed by hermetically connecting a resonant cavity front end and a resonant cavity rear end, the resonant cavity front end and the resonant cavity rear end are made of metal, the inner wall of the cavity adopts a silver plating layer and is polished, and an embedded insulating tube is embedded into the central axis of the resonant cavity and is used for guiding gas-liquid two-phase flow fluid and preventing the fluid from permeating into a cavity space. Thespace formed by the resonant cavity and the embedded insulating tube is filled with an embedded insulating medium. A pair of antenna coupling holes are formed in the opposite positions of the side wall of the resonant cavity, and the microwave feed-in mode of the resonant cavity adopts a microwave antenna coupling feed-in mode; and a rectifier is positioned in the transition pipe section at the upstream of the flowing direction. The invention also provides a moisture content measuring method of the device.

Description

technical field [0001] The invention relates to microwave devices and the field of oil and gas engineering, in particular to a method for measuring the water content of gas-liquid two-phase flow. Background technique [0002] Accurate measurement of water content in gas-liquid two-phase flow of natural gas is of great significance in natural gas exploitation, gathering and transportation metering, distribution stations, storage, transportation and sales, operation of combustion equipment, and trade settlement. Due to the complexity of gas-liquid flow, it is very difficult to measure the water content accurately in real time. Accurate and real-time acquisition of water content information can not only provide a theoretical basis for stably controlling the process of natural gas production, but also ensure the production of finished natural gas, thereby reducing production costs and energy consumption. Therefore, it is particularly important to find a timely and accurate wate...

Claims

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Application Information

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IPC IPC(8): G01N22/04
CPCG01N22/04
Inventor 徐英杨以光张涛
Owner TIANJIN UNIV
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