CN1228528A - Divided-flow split-phase type two-phase fluid flow measuring method - Google Patents
Divided-flow split-phase type two-phase fluid flow measuring method Download PDFInfo
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- CN1228528A CN1228528A CN 98113068 CN98113068A CN1228528A CN 1228528 A CN1228528 A CN 1228528A CN 98113068 CN98113068 CN 98113068 CN 98113068 A CN98113068 A CN 98113068A CN 1228528 A CN1228528 A CN 1228528A
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Abstract
The two-phase fluid flow measurement method includes the following steps: firstly, using distributor to divert a part of two-phase fluid, then using separator to separate this part of two-phase fluid into single-phase gas and single-phase liquid, and using single-phase gas flowmeter and single-phase liquid flowmeter respectively to make calculation, then according to the proportional relationship the calculated results can be converted into the flow rates of components of the measured two-phase fluid, finally, they can be returned into the flowing pipeline of the two-phase fluid. Said method is easy to implement, measuring accuracy is high and measuring range is wide.
Description
The invention belongs to the flow measurement technology field, further relate to the measuring method that the interior gas-liquid two-phase fluid stream of a kind of pipeline reaches component most.
In oil thermal recovery, the steam that injects in the oil well is steam-water two-phase fluid potpourri, require accurately metering and control to inject the steam flow and the component of every mouthful of well on the oil production technology, also need simultaneously to detect with the reasonable distribution steam injection pipe network in the steam flow and the component of each arm.Be generally rock gas-oil water mixture in oil recovery and petroleum pipeline, the metering of oil and gas production and the detection of petroleum pipeline all need the two-phase fluid flowmeter.The flow operating mode that also usually occurs various gas-liquid two-phase fluids in addition in other industry and civil pipeline has only the two-phase fluid of use flowmeter accurately its flow of metering and component.
Lin Zonghu " gas-liquid-solid multiphase flow measurement " (China Measuring Press, 1988) book chapter 3, chapter 4 and chapter 6 third and fourth, five the joint in, summed up various two-phase fluid flows and component measuring method.These methods all directly place two-phase fluid to measure measurement instrument.R Thom " Recent developments in three-phase flowmeasurement " (Measurement Science﹠amp; Technology, Vol8, No7,1997, pp691-701) in the literary composition, summarized the latest developments of various gas-oil water mixture measuring method.Equally, these methods also all directly place two-phase fluid to measure measurement instrument.Because a notable feature of two-phase fluid is to flow to have strong undulatory property, and along with the variation of two-phase fluid component, flow pattern is also constantly changing.Therefore, the instrument of on-line operation in two-phase fluid, the quality of its output signal is generally relatively poor, and undulatory property is big, and measuring accuracy is low, and measurement range is little.
The conventional way that addresses this problem is at first to adopt separation vessel that two-phase fluid is separated into single phase gas and single-phase liquid, then respectively with single-phase flowmeter metering.A book chapter 6 the 6th saves this method of having introduced to Lin Zonghu in " gas-liquid-solid multiphase flow measurement " (China Measuring Press, 1988).But its disadvantage is that the volume of separation vessel is too huge, the cost height, and resistance is big.Thereby should not make the instrument widespread use.
The objective of the invention is to solve the defective of above prior art, a kind of divided-flow split-phase type two-phase fluid flow measuring method is provided.Adopt this method both can make the metering of two-phase fluid change into the metering of monophasic fluid, do not make the volume of separation vessel excessive again simultaneously, become widespread use so that make instrument.
The present invention is by the method for shunting phase-splitting, at first distribute a part of two-phase fluid pro rata by divider, then use separation vessel that this part two-phase fluid is separated into single phase gas and single-phase liquid, measure and be converted under a proportional relationship the flow and the component of tested two-phase fluid then respectively with single phase gas flowmeter and single-phase liquid flowmeter, respectively this part single phase gas and single-phase liquid are returned in the flow duct of two-phase fluid more at last.
Fig. 1 is a measuring method synoptic diagram of the present invention.
Fig. 2 is a kind of short-cut method synoptic diagram of subject matter.
Fig. 3 is the another kind of short-cut method synoptic diagram of subject matter.
Referring now to Fig. 1, Fig. 2, Fig. 3, the present invention is elaborated.In Fig. 1, the flow duct of the tested two-phase fluid of 1 expression.2 expression dividers.Tested two-phase fluid at first enters divider, and two-phase fluid is divided into some parts (5～50 parts) in divider, and each part all occupies a not connected space cell individually, and guarantees that the flow in each unit is all identical with component; And then shunt after flowing through divider, select the fewer cells in the divider to lead to separation vessel 3, all the other still lead to pipeline 1; In separation vessel, the two-phase fluid in the selected unit is separated into single phase gas and single-phase liquid; Single phase gas enters gas meter 5 by gasmetry pipeline 4 and measures; Single-phase liquid enters liquid flowmeter 7 by liquid measure pipeline 6 and measures; In single phase gas after the metering and single-phase liquid difference Returning pipe 1.At last, under a proportional relationship the reading of gas meter and liquid flowmeter is converted into the flow and the component of tested two-phase fluid.8 expression resistance pieces.The characteristic of proportionate relationship depends on the characteristic of resistance piece and leads to the number of unit of separation vessel.
In Fig. 2, the flow duct of the tested two-phase fluid of 1 expression, 9 expression shunting separation vessels, it is the merging body of divider and separation vessel.Can tell a part of single phase gas by the shunting separation vessel from tested two-phase fluid, this part single phase gas enters gas meter 5 through gasmetry pipeline 4 and measures, in the single phase gas Returning pipe 1 after the metering.At last, under a proportional relationship the reading of gas meter is converted into the flow or the component of tested two-phase fluid.8 expression resistance pieces, its characteristic has determined the characteristic of proportionate relationship.This method is a kind of reduction procedure, is applicable in the two-phase fluid that flow or one of them parameter of component are occasion known and that air content is higher relatively.
In Fig. 3, the flow duct of the tested two-phase fluid of 1 expression, 9 expression shunting separation vessels, it is the merging body of divider and separation vessel.Symmetrical with Fig. 2, can from tested two-phase fluid, tell a part of single-phase liquid by the shunting separation vessel, this part single-phase liquid enters liquid flowmeter 7 through measuring channel 6 and measures, in the single-phase liquid Returning pipe 1 after the metering.At last, under a proportional relationship the reading of liquid flowmeter is converted into the flow or the component of tested two-phase fluid.8 expression resistance pieces, its characteristic has determined the characteristic of proportionate relationship.This method also is a kind of reduction procedure, is applicable in the two-phase fluid that flow or one of them parameter of component are occasion known and that air content is less relatively.
Claims (1)
1. divided-flow split-phase type two-phase fluid flow measuring method, it is characterized by at first and distribute a part of two-phase fluid pro rata by divider, then use separation vessel that this part two-phase fluid is separated into single phase gas and single-phase liquid, measure and be converted under a proportional relationship the flow and the component of tested two-phase fluid then respectively with single phase gas flowmeter and single-phase liquid flowmeter, respectively this part single phase gas and single-phase liquid are returned in the flow duct of two-phase fluid more at last.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98113068 CN1085333C (en) | 1998-12-30 | 1998-12-30 | Divided-flow split-phase type two-phase fluid flow measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98113068 CN1085333C (en) | 1998-12-30 | 1998-12-30 | Divided-flow split-phase type two-phase fluid flow measuring method |
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| Publication Number | Publication Date |
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| CN1228528A true CN1228528A (en) | 1999-09-15 |
| CN1085333C CN1085333C (en) | 2002-05-22 |
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| CN 98113068 Expired - Fee Related CN1085333C (en) | 1998-12-30 | 1998-12-30 | Divided-flow split-phase type two-phase fluid flow measuring method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346140C (en) * | 2004-03-01 | 2007-10-31 | 西安交通大学 | Time-division multi-phase fluid ratio distribution method and device |
| CN102392939A (en) * | 2011-09-06 | 2012-03-28 | 中国石油集团工程设计有限责任公司 | Multiphase flow metering system and method |
| CN102620791A (en) * | 2012-04-12 | 2012-08-01 | 新奥气化采煤有限公司 | Method and system for measuring gas flow in multiphase flow and multiphase flow distribution device |
| CN103562688A (en) * | 2011-05-25 | 2014-02-05 | 乔治洛德方法研究和开发液化空气有限公司 | Flowmeter for two-phase gas/liquid cryogenic fluids |
| CN103791952A (en) * | 2012-10-29 | 2014-05-14 | 中国石油化工股份有限公司 | Oil field ground wet steam flow dryness measuring device |
| CN103894004A (en) * | 2014-02-28 | 2014-07-02 | 西安交通大学 | Novel equal-dryness distribution device and method of gas-liquid two-phase fluid |
| CN104075766A (en) * | 2014-06-19 | 2014-10-01 | 西安交通大学 | Pipe internal-phase separation type high-gas-containing-rate gas-liquid two-phase fluid flow measurement device and method |
| CN105928730A (en) * | 2016-04-19 | 2016-09-07 | 中国原子能科学研究院 | Apparatus and method for split charging of two-phase-coexisting sample in hot cell |
| CN106053726A (en) * | 2016-05-26 | 2016-10-26 | 天邦膜技术国家工程研究中心有限责任公司 | Portable gas-water-ratio tester for water-soluble helium |
| CN107882547A (en) * | 2016-09-29 | 2018-04-06 | 中国石油化工股份有限公司 | Duct type high-water-cut oil-producing well produces liquid three-phase metering mechanism and method |
| CN110082066A (en) * | 2019-05-29 | 2019-08-02 | 天津商业大学 | The shunting performance testing experimental system influenced by the non-homogeneous heat exchange in downstream |
-
1998
- 1998-12-30 CN CN 98113068 patent/CN1085333C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346140C (en) * | 2004-03-01 | 2007-10-31 | 西安交通大学 | Time-division multi-phase fluid ratio distribution method and device |
| CN103562688A (en) * | 2011-05-25 | 2014-02-05 | 乔治洛德方法研究和开发液化空气有限公司 | Flowmeter for two-phase gas/liquid cryogenic fluids |
| CN102392939A (en) * | 2011-09-06 | 2012-03-28 | 中国石油集团工程设计有限责任公司 | Multiphase flow metering system and method |
| CN102620791A (en) * | 2012-04-12 | 2012-08-01 | 新奥气化采煤有限公司 | Method and system for measuring gas flow in multiphase flow and multiphase flow distribution device |
| CN103791952B (en) * | 2012-10-29 | 2018-03-16 | 中国石油化工股份有限公司 | Oil field ground wet steam flow dryness measurement device |
| CN103791952A (en) * | 2012-10-29 | 2014-05-14 | 中国石油化工股份有限公司 | Oil field ground wet steam flow dryness measuring device |
| CN103894004A (en) * | 2014-02-28 | 2014-07-02 | 西安交通大学 | Novel equal-dryness distribution device and method of gas-liquid two-phase fluid |
| CN104075766A (en) * | 2014-06-19 | 2014-10-01 | 西安交通大学 | Pipe internal-phase separation type high-gas-containing-rate gas-liquid two-phase fluid flow measurement device and method |
| CN104075766B (en) * | 2014-06-19 | 2017-03-29 | 西安交通大学 | The high void fraction gas-liquid two-phase fluid flow measurement device of phase cellular-type and method in pipe |
| CN105928730A (en) * | 2016-04-19 | 2016-09-07 | 中国原子能科学研究院 | Apparatus and method for split charging of two-phase-coexisting sample in hot cell |
| CN105928730B (en) * | 2016-04-19 | 2018-08-07 | 中国原子能科学研究院 | A kind of device and method for dispensing two-phase coexistent sample in hot cell |
| CN106053726A (en) * | 2016-05-26 | 2016-10-26 | 天邦膜技术国家工程研究中心有限责任公司 | Portable gas-water-ratio tester for water-soluble helium |
| CN107882547A (en) * | 2016-09-29 | 2018-04-06 | 中国石油化工股份有限公司 | Duct type high-water-cut oil-producing well produces liquid three-phase metering mechanism and method |
| CN107882547B (en) * | 2016-09-29 | 2023-08-04 | 中国石油化工股份有限公司 | Pipeline type high-water-content oil well liquid production three-phase metering device and method |
| CN110082066A (en) * | 2019-05-29 | 2019-08-02 | 天津商业大学 | The shunting performance testing experimental system influenced by the non-homogeneous heat exchange in downstream |
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|---|---|
| CN1085333C (en) | 2002-05-22 |
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