Annular flow liquid membrane separation and mass metering method
A technology of liquid membrane separation and annular flow, applied in the field of two-phase flow measurement, which can solve the problems of large manual measurement errors, inability to transmit signals remotely, and inability to realize automatic sampling, etc.
Active Publication Date: 2018-09-18
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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[0029] 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.
[0030] 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.
[0031] 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 membrane separation and mass metering method. An adopted device comprises a permeation collecting system, a flow control system and a metering weighingsystem; the permeation collecting system comprises a porous permeation pipeline, a sleeve, a blow-down valve, a three-way valve and a control valve; the middle section of the porous permeation pipeline is a porous section and is located inside the sleeve, a flow guiding hole is formed in the lower portion of the sleeve, fluid permeating from the porous section flows out through the flow guiding hole, the fluid flows through the three-way valve and enters a water storage container of the metering weighing system after passing through the control valve, after liquid and gas separation is performed in the water storage container, gas is metered through the flow control system and exhausted, and liquid is stored in the water storage container. The flow control system comprises a float flowmeter and an exhaust valve. When gas and liquid two-phase fluids flow through the porous permeation pipeline, mass metering is performed on a separated liquid membrane; the exhaust amount is precisely controlled and metered, the liquid membrane can be completely collected, and the average flow rate of the liquid membrane 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...
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Login to View More IPC IPC(8): G01F1/52
CPCG01F1/52
Inventor 王超曹培娟丁红兵李一鸣白瑞峰
Owner TIANJIN UNIV