An annular flow film collection and metering device
A metering device and annular flow technology, applied in mass flow measurement devices, measurement devices, volume measurement, etc., can solve the problems of large manual measurement errors, inability of remote transmission of signals, and inability to achieve automatic sampling.
Active Publication Date: 2019-11-01
TIANJIN UNIV
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Problems solved by technology
However, the existing liquid film extraction method mainly uses a graduated cylinder to measure the volume of the liquid film, the signal cannot be transmitted remotely, automatic sampling cannot be realized, and there are problems such as large manual measurement errors
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[0023] In order to further understand the features, technical means, and specific objectives and functions achieved by the present invention, the specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0024] For the schematic diagram of the annular flow membrane collection and metering device, see figure 1 , including permeation collection system 1, metering and weighing system 2 and flow control system 3, through the precise control and measurement of the exhaust volume, the complete collection of the liquid film can be realized, and the average flow rate of the liquid film can be obtained.
[0025] For a schematic diagram of the permeate collection system see figure 2 , including bolt holes 4, flanges 5, porous permeable pipes 6, transparent sleeves 7, drain valves 8, three-way valves 9, control valves 10 and clamps 11. The middle part of the porous permeable pipe 6 is a porous section. For convenien...
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The invention relates to an annular-flow liquid film collecting and metering device. The annular-flow liquid film collecting and metering device comprises three parts, namely a permeating collection system, a flow control system and a metering weighing system, wherein the permeating collection system comprises a porous permeating pipe, a transparent sleeve, a drain valve, a three-way valve and a control valve; the middle section of the porous permeating pipe is a porous section; the porous section is made of a porous filter core sintered material and is positioned in the transparent sleeve; aflow-guiding hole is formed in the lower part of the transparent sleeve; after a fluid permeating out of the porous section flows out from the flow-guiding hole, the fluid flows through the three-wayvalve first and then flows through the control valve to enter a water storage container of the metering weighing system; after gas and liquid separation in the water storage container, gas is meteredby the flow control system and is emitted and liquid is stored in the water storage container; the side of the three-way valve leads to the outside through the drain valve. Through precise control andmetering of the gas emission volume, complete collection of a liquid film can be achieved, and the average flow of the liquid film is obtained.
Description
technical field [0001] The invention belongs to the field of two-phase flow measurement, and relates to an annular flow liquid film collection and metering device. Background technique [0002] Gas-liquid two-phase flow widely exists in industrial processes such as petroleum, thermal power, aerospace and chemical industry. Annular flow is a common gas-liquid two-phase flow pattern, characterized by the fact that part of the liquid phase flows along the tube wall in the form of a liquid film, and the other part exists in the high-speed gas core in the form of liquid droplets. Due to the deposition of droplets and the atomization of the liquid film, there is a mass exchange between the two [1]. The droplet-film mass transfer problem is very important to the study of annular flow. The droplet entrainment rate greatly affects the occurrence of dry-out and the deterioration of heat transfer after dry-out, and the establishment of the dry-out model depends on the accurate measur...
Claims
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IPC IPC(8): G01F1/78G01F15/08
CPCG01F1/78G01F15/08
Inventor 王超张哲晓丁红兵李金霞李一鸣
Owner TIANJIN UNIV