CN201514247U - Gas-liquid multi-phase flow measuring device - Google Patents

Gas-liquid multi-phase flow measuring device Download PDF

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Publication number
CN201514247U
CN201514247U CN2009200350334U CN200920035033U CN201514247U CN 201514247 U CN201514247 U CN 201514247U CN 2009200350334 U CN2009200350334 U CN 2009200350334U CN 200920035033 U CN200920035033 U CN 200920035033U CN 201514247 U CN201514247 U CN 201514247U
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CN
China
Prior art keywords
flow
gas
flowmeter sensor
homogeneous phase
straight pipe
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2009200350334U
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Chinese (zh)
Inventor
李世武
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Northwestern Polytechnical University
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Northwestern Polytechnical University
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Priority to CN2009200350334U priority Critical patent/CN201514247U/en
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Publication of CN201514247U publication Critical patent/CN201514247U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a gas-liquid multi-phase flow measuring device for measurement of flow of wet flow which is not distributed in homogeneous phase, which is characterized in that an A homogeneous phase rectifier, an A flowmeter sensor, a B homogeneous phase rectifier and a B flowmeter sensor are arranged in a straight tube in turn, and a digital display meter embedded with gas-liquid multi-phase flow processing programs is fixed outside the straight tube. The flow of wet flow which is not distributed in homogeneous phase can be solved through the simultaneous mass conservation equations of the A flowmeter sensor and the B flowmeter sensor by collecting the flow characteristic value signals of the A flowmeter sensor and the flow characteristic value signals of the B flowmeter sensor. The gas-liquid multi-phase flow measuring device not only can measure the mass flow of gas-liquid multi-phase flow, and has the advantages of high measuring precision, stability, reliability, simple structure and low production cost.

Description

The gas-liquid multiphase flow rate measurement mechanism
Technical field
The utility model relates to a kind of flow measurement device, particularly the gas-liquid multiphase flow rate measurement mechanism.
Background technology
Gas-liquid polyphase flow is gas-liquid two-phase or the above fluid of gas-liquid two-phase.In process industrial, often relate to the conveying of gas-liquid polyphase flow, for example, the wet steam transmission in the industry, separated from petroleum, oil gas transporting something containerized etc.For the production run that relates to gas-liquid polyphase flow is monitored and operational management, just need measure and measure the flow of gas-liquid polyphase flow.Because common flowmeter can only be measured the flow of single-phase flow, and gas-liquid polyphase flow is non-single-phase flow, it is in pipeline flows, its fluidised form flow of bubble, air mass stream, stratified flow, wave flow, slug flow often occur, seethes stream and annular flow etc., so, be quite difficult to the accurate measurement of gas-liquid multiphase flow rate.
Application number is 200710055286.3 patent of invention, discloses a kind of association type wet steam flow, dryness measurement device and measuring method thereof, and wet steam is exactly a biphase gas and liquid flow, belongs to the gas-liquid polyphase flow category.The technical characterictic of this measurement mechanism is: two flowmeters are installed in series on jet chimney, one is orifice flowmeter, another is the Venturi tube flowmeter, by gathering the front and back fluid pressure difference of these two flowmeters, the flow formula of these two flowmeters of simultaneous solves wet steam flow and mass dryness fraction.Yet, this wet steam flow device, related orifice flowmeter and Venturi tube flowmeter, its flow measurement principle is similar, all is by gathering the front and back fluid pressure difference of flowmeter, calculating steam flow and mass dryness fraction.Because the flow measurement principle of these two kinds of flowmeters is identical, is to belong to of a sort pressure reduction type flowmeter in theory, the similarity of its flow formula has caused can not directly drawing wet steam flow to be asked when the simultaneous solution flow formula.Though, this wet steam flow device has been introduced " two-phase slip factor " parameter in the flow formula of these two kinds of flowmeters, saturated vapor density, saturation water density and mass dryness fraction, flow formula to these two kinds of flowmeters is out of shape, make these two kinds of flow formulas different in form, but this measure does not change the similarity of these two kinds of its flow measurement essence of flowmeter, so, from measuring principle as can be known, this wet steam flow device, because of having selected inappropriate two kinds of flowmeters for use, cause its steam flow precision surveyed and measuring stability not high.In addition, wet steam is in jet chimney flows, the heterogeneous distribution of gas phase and liquid phase often appears on cross-section of pipeline, the measurement of this dewing steam mass flow, brought great difficulty, and association type wet steam flow device to the wet steam of this heterogeneous distribution, is difficult to carry out flow measurement.
Summary of the invention
In order to overcome the deficiency that prior art association type wet steam flow device can not carry out the measurement of heterogeneous distribution wet steam flow, the utility model provides a kind of gas-liquid multiphase flow rate measurement mechanism, by homogeneous phase rectifier and flowmeter sensor are set, can measure heterogeneous distribution wet steam.
The technical scheme that its technical matters that solves the utility model adopts: a kind of gas-liquid multiphase flow rate measurement mechanism, comprise straight pipe, digital display meter, be characterized in also comprising A homogeneous phase rectifier, A flowmeter sensor, B homogeneous phase rectifier, B flowmeter sensor, connect an orchid and be fixed on the straight pipe two ends, be equipped with A homogeneous phase rectifier, A flowmeter sensor, B homogeneous phase rectifier, B flowmeter sensor in straight pipe successively, the digital display meter of built-in gas-liquid multiphase flow rate handling procedure is fixed on outside the straight pipe; Described homogeneous phase rectifier is made up of axial-flow turbine and porous plate rectifier, and the external diameter of porous plate is identical with the internal diameter of straight pipe, and is evenly distributed with some circular holes.
The beneficial effects of the utility model are: by homogeneous phase rectifier and flowmeter sensor are set, digital display meter is by gathering the traffic characteristic value signal that the A flowmeter sensor is surveyed, the traffic characteristic value signal that the B flowmeter sensor is surveyed, through signal Processing, again by the mass-conservation equation of A flowmeter sensor and B flowmeter sensor, simultaneous solution goes out the mass rate of polyphasic flow to be measured, realized heterogeneous distribution wet steam is measured, and measuring accuracy height, reliable and stable, simple in structure, low cost of manufacture.
Below in conjunction with drawings and Examples the utility model is elaborated.
Description of drawings
Accompanying drawing is the utility model gas-liquid multiphase flow rate measurement mechanism structural representation.
Among the figure, the 1-straight pipe, 2-A homogeneous phase rectifier, the 3-A flowmeter sensor, 4-digital display meter, 5-B flowmeter sensor, 6-connect sends out orchid, 7-B homogeneous phase rectifier.
Embodiment
With reference to accompanying drawing, the flow measurement device of the utility model gas-liquid polyphase flow, what measure is two phase flow of damp steam flow in the pipeline, adopt 90mm internal diameter 100mm external diameter stainless steel straight pipe 1, A homogeneous phase rectifier 2, A flowmeter sensor 3, B homogeneous phase rectifier 7, B flowmeter sensor 5, connect and send out blue 6, and with the digital display meter 4 that is built-in with the gas-liquid multiphase flow rate handling procedure as measurement mechanism.Wherein, A homogeneous phase rectifier 2, A flowmeter sensor 3, B homogeneous phase rectifier 7, B flowmeter sensor 5 are installed successively in straight pipe 1, and the stainless steel at straight pipe 1 two ends is connected in the pipeline of sending out blue 6 accesses gas-liquid multiphase flow rate to be measured; Digital display meter 4 is fixed on outside the straight pipe 1, and communicates to connect with A flowmeter sensor 3 and B flowmeter sensor 5 respectively.The flow sensing eigenwert signal that digital display meter 4 is surveyed by the flow sensing eigenwert signal gathering A flowmeter sensor 3 and surveyed and B flowmeter sensor 5, draw gas-liquid polyphase flow mass rate to be measured by built-in gas-liquid multiphase flow rate handling procedure, and on this digital display meter 4, show and storage.
A homogeneous phase device rectifier and B homogeneous phase device rectifier all are to be made up of axial-flow turbine and porous plate rectifier successively, and in straight pipe, gas-liquid polyphase flow through axial-flow turbine, passes through the porous plate rectifier earlier again.Axial-flow turbine is made by stainless steel, and its impeller rotating diameter is 88mm, and the turboshaft support that stainless steel material is made is welded on the inwall of straight pipe 1.The porous plate rectifier is the thick circular corrosion resistant plate of 3mm, its diameter is identical with the internal diameter of straight pipe 1, be evenly distributed with the circular hole that some diameters are 2mm on the porous plate, circumference with the porous plate rectifier is welded on the inwall of straight pipe 1 then, makes the plectane of porous plate rectifier axial perpendicular to straight pipe.

Claims (1)

1. gas-liquid multiphase flow rate measurement mechanism, comprise straight pipe, digital display meter, it is characterized in that: also comprise A homogeneous phase rectifier, A flowmeter sensor, B homogeneous phase rectifier, B flowmeter sensor, connect an orchid and be fixed on the straight pipe two ends, be equipped with A homogeneous phase rectifier, A flowmeter sensor, B homogeneous phase rectifier, B flowmeter sensor in straight pipe successively, the digital display meter of built-in gas-liquid multiphase flow rate handling procedure is fixed on outside the straight pipe; Described homogeneous phase rectifier is made up of axial-flow turbine and porous plate rectifier, and the external diameter of porous plate is identical with the internal diameter of straight pipe, and is evenly distributed with some circular holes.
CN2009200350334U 2009-10-14 2009-10-14 Gas-liquid multi-phase flow measuring device Expired - Fee Related CN201514247U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009200350334U CN201514247U (en) 2009-10-14 2009-10-14 Gas-liquid multi-phase flow measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009200350334U CN201514247U (en) 2009-10-14 2009-10-14 Gas-liquid multi-phase flow measuring device

Publications (1)

Publication Number Publication Date
CN201514247U true CN201514247U (en) 2010-06-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009200350334U Expired - Fee Related CN201514247U (en) 2009-10-14 2009-10-14 Gas-liquid multi-phase flow measuring device

Country Status (1)

Country Link
CN (1) CN201514247U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102435236A (en) * 2011-11-04 2012-05-02 南通醋酸纤维有限公司 Flow meter of perforated plate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102435236A (en) * 2011-11-04 2012-05-02 南通醋酸纤维有限公司 Flow meter of perforated plate

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GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100623

Termination date: 20121014