CN102889909A - Device and method for measuring gas and solid dual-phase flow - Google Patents
Device and method for measuring gas and solid dual-phase flow Download PDFInfo
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- CN102889909A CN102889909A CN2011102026110A CN201110202611A CN102889909A CN 102889909 A CN102889909 A CN 102889909A CN 2011102026110 A CN2011102026110 A CN 2011102026110A CN 201110202611 A CN201110202611 A CN 201110202611A CN 102889909 A CN102889909 A CN 102889909A
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Abstract
The invention discloses a device and a method for measuring gas and solid dual-phase flow, wherein the device comprises a plurality of flow velocity measurement electrode pairs, at least one concentration measurement electrode pair, and a flow calculating processor, wherein the plurality of flow velocity measurement electrode pairs are arranged at the outer wall of a pipeline at scheduled intervals along an extension direction of the pipeline; each flow velocity measurement electrode pair comprises flow velocity measurement electrodes which are arranged in pairs and at two sides of the outer wall of the pipeline; each concentration measurement electrode pair comprises concentration measurement electrodes arranged in pairs and at two sides of the outer wall of the pipeline, and the flow calculating processor is connected to the plurality of flow velocity measurement electrode pairs and at least one concentration measurement electrode pair. According to the device and the method, by providing the electrodes at two sides of the pipeline, two opposite electrodes form an electrode pair, so that measurement of the gas and solid dual-phase flow inside the pipeline is finished outside the pipeline; an object flowing inside the pipeline is prevented from damaging the measuring device; the gas and solid dual-phase flow inside the pipeline can be measured in a simple and effective manner; and the measurement cost is saved, and the measurement effect is also improved.
Description
Technical field
The present invention relates to a kind of Dual-Phrase Distribution of Gas olid flow measurement device and method.
Background technology
Pipeline is the common equipment for transmission, needs under many circumstances in the accurate Calculation pipeline flow with the granule materials (being Dual-Phrase Distribution of Gas olid) of strength transmission.
For example, pulverized coal injection in blast furnace is the important technology that international ironmaking circle generally adopts, yet when before to the industrial furnace coal powder burning, measuring concentration, mostly use conventional thermal meter that online coal dust is measured, in the hope of changing the consumption of coal, or with electronic scales supporting intermediate tank or coal powder injection tank are measured.
Flow for the potpourri of the Powdered and little bulk that flows in the measuring channel, there has been manufacturer to propose in pipeline, to be provided for the pole plate of measuring, be provided with a plurality of electrodes on it, the flow velocity and the concentration that are used for object in the statistics pipeline, still, because the flow velocity of potpourri is very fast, potpourri damages the measurement mechanism in the pipeline possibly, increase cost and the difficulty measured, therefore, be difficult to the effectively flow of the interior object of measuring channel.
For the effective problems of liquid flow of Dual-Phrase Distribution of Gas olid in the measuring channel in the correlation technique, effective solution is proposed not yet at present.
Summary of the invention
For the effective problem of the flow of Dual-Phrase Distribution of Gas olid in the measuring channel in the correlation technique, the present invention proposes a kind of Dual-Phrase Distribution of Gas olid flow measurement device and method, can save the cost of measuring with the flow of Dual-Phrase Distribution of Gas olid in simple, the effective mode measuring channel, improve measurement effect.
Technical scheme of the present invention is achieved in that
According to an aspect of the present invention, provide a kind of Dual-Phrase Distribution of Gas olid flow measurement device, be used for the flow of Dual-Phrase Distribution of Gas olid in the pipeline is measured.
Dual-Phrase Distribution of Gas olid flow measurement device according to the present invention comprises: a plurality of fluid-velocity survey electrode pairs, with predetermined space along the outer wall setting at pipeline of the bearing of trend of pipeline, wherein, each fluid-velocity survey electrode pair includes paired setting and is positioned at the fluid-velocity survey electrode of pipeline outer wall both sides; At least one concentration measuring electrode pair, wherein, each concentration measuring electrode is to including paired setting and being positioned at the concentration measuring electrode of pipeline outer wall both sides; The flow rate calculation processor is connected to a plurality of fluid-velocity survey electrode pairs and at least one concentration measuring electrode pair.
Wherein, for each fluid-velocity survey electrode pair, a fluid-velocity survey electrode in the fluid-velocity survey electrode that wherein arranges in pairs is the transmitting terminal electrode, and another fluid-velocity survey electrode is the receiving end electrode.
In addition, for each concentration measuring electrode pair, a concentration measuring electrode in the concentration measuring electrode that wherein arranges in pairs is the transmitting terminal electrode, and another and concentration measuring electrode are the receiving end electrode.
In addition, the area of right each electrode of concentration measuring electrode is greater than the area of each electrode in a plurality of fluid-velocity survey electrode pairs.
Alternatively, the quantity of fluid-velocity survey electrode pair is 4.
In addition, for each electrode pair of a plurality of fluid-velocity survey electrode pairs and at least one concentration measuring electrode centering, settle this part pipeline of these electrode pairs to be made by nonmetallic materials.
According to a further aspect in the invention, also provide a kind of Dual-Phrase Distribution of Gas olid flow-measuring method.
Dual-Phrase Distribution of Gas olid flow-measuring method according to the present invention comprises: the flow rate calculation processor receives the traffic sampling data that a plurality of fluid-velocity survey electrode pairs report, and receive by the concentration sampled data of at least one concentration measuring electrode to reporting, wherein, a plurality of fluid-velocity survey electrode pairs with predetermined space along the bearing of trend of pipeline in the pipeline outer wall setting, each fluid-velocity survey electrode pair includes paired setting and is positioned at the fluid-velocity survey electrode of pipeline outer wall both sides, and each concentration measuring electrode is to including paired setting and being positioned at the concentration measuring electrode of pipeline outer wall both sides; The flow rate calculation processor is determined the flow of pipeline endoparticle material according to concentration sampled data and traffic sampling data.
The method can further comprise: the flow rate calculation processor selects part or all of fluid-velocity survey electrode pair as a plurality of fluid-velocity survey electrode pairs that obtain and report the traffic sampling data from the set that all fluid-velocity survey electrode pairs form in advance.
In addition, the traffic sampling data comprise that the distribution situation of each granule materials set in the pipeline that the sampling of a plurality of fluid-velocity survey electrode pairs obtains and each granule materials collective flow are through the temporal information of a plurality of fluid-velocity survey electrode pairs.
Wherein, the flow rate calculation processor determines that according to concentration sampled data and traffic sampling data the flow of pipeline endoparticle material comprises: the flow rate calculation processor according to same granule materials collective flow in the traffic sampling data through the mistiming of a plurality of fluid-velocity survey electrode pairs and the gap length between a plurality of fluid-velocity survey electrode pair, determine the flow velocity of pipeline endoparticle material, and determine the flow of pipeline endoparticle material according to the concentration that flow velocity and concentration sampled data represent.
And, the flow rate calculation processor is by the similarity between the distribution situation of each granule materials set in the pipeline that a plurality of fluid-velocity survey electrode pair samplings are obtained, determine the traffic sampling data corresponding to same granule materials set, and obtain same granule materials collective flow through the mistiming of a plurality of fluid-velocity survey electrode pairs.
In addition, for each fluid-velocity survey electrode pair, a fluid-velocity survey electrode in the fluid-velocity survey electrode that wherein arranges in pairs is the first transmitting terminal electrode, another fluid-velocity survey electrode is the first receiving end electrode, the first transmitting terminal electrode is used for sending predetermined electromagnetic wave signal to the first receiving end electrode, and the recording electromagnetic wave signal obtains the traffic sampling data to the first receiving end by receiving also;
For each concentration measuring electrode pair, a concentration measuring electrode in the concentration measuring electrode that wherein arranges in pairs is the second transmitting terminal electrode, another and concentration measuring electrode are the second receiving end electrode, the second transmitting terminal electrode is used for sending predetermined electromagnetic wave signal to the second receiving end electrode, and the recording electromagnetic wave signal obtains the concentration sampled data to the second receiving end by receiving also.
The present invention arranges electrode by the both sides at pipeline, two relative electrodes form electrode pair, thereby outside pipeline, finish the measurement of Dual-Phrase Distribution of Gas olid flow in the pipeline, the object of avoiding flowing in the pipeline damages measuring equipment, can be with the flow of Dual-Phrase Distribution of Gas olid in simple, the effective mode measuring channel, save the cost of measuring, improve measurement effect.
Description of drawings
Fig. 1 is the schematic diagram that is arranged on the pipeline both sides according to the electrode pair in the flow measurement device of the embodiment of the invention;
Fig. 2 is the structural drawing that is arranged at pipeline according to the flow measurement device of the embodiment of the invention;
Fig. 3 is the process flow diagram according to the flow-measuring method of the embodiment of the invention.
Embodiment
According to embodiments of the invention, provide a kind of Dual-Phrase Distribution of Gas olid flow measurement device.
As shown in Figure 1, the Dual-Phrase Distribution of Gas olid flow measurement device according to the embodiment of the invention comprises:
4 fluid-velocity survey electrode pairs 12 to 15, with predetermined space along the outer wall setting at pipeline of the bearing of trend of pipeline 16, wherein, each fluid-velocity survey electrode pair includes paired setting and is positioned at the fluid-velocity survey electrode of pipeline outer wall both sides, that is to say, a fluid-velocity survey electrode pair comprises two electrodes, and an electrode is arranged on a side of pipeline 16, another electrode is arranged on the opposite side of pipeline 16, but not is positioned at the cavity of pipeline 16; Alternatively, the quantity of fluid-velocity survey electrode pair also can be 2,3 or more than 4;
Concentration measuring electrode is to 11, wherein, each concentration measuring electrode is to including paired setting and being positioned at the concentration measuring electrode of pipeline outer wall both sides, that is to say, a concentration measuring electrode is to comprising two electrodes, an electrode is arranged on a side of pipeline 16, and another electrode is arranged on the opposite side of pipeline 16, but not is positioned at tube cavity; Alternatively, the right quantity of concentration measuring electrode can be a plurality of, if a plurality of concentration measuring electrodes pair need to be set, then the right electrode of other concentration measuring electrode also can adopt similar mode to be arranged on the both sides of pipeline 16, and this paper is not described in detail;
Flow rate calculation processor (not shown in Figure 1) is connected to a plurality of fluid-velocity survey electrode pairs and at least one concentration measuring electrode pair.
Wherein, for each fluid-velocity survey electrode pair (each in the electrode pair 12 to 15), a fluid-velocity survey electrode in the fluid-velocity survey electrode that wherein arranges in pairs is the transmitting terminal electrode, and another fluid-velocity survey electrode is the receiving end electrode.Similarly, for each concentration measuring electrode pair, a concentration measuring electrode in the concentration measuring electrode that wherein arranges in pairs is the transmitting terminal electrode, and another and concentration measuring electrode are the receiving end electrode.
Particularly, for each fluid-velocity survey electrode pair, a fluid-velocity survey electrode in the fluid-velocity survey electrode that wherein arranges in pairs is the first transmitting terminal electrode, another fluid-velocity survey electrode is the first receiving end electrode, the first transmitting terminal electrode is used for sending predetermined electromagnetic wave signal to the first receiving end electrode, and the recording electromagnetic wave signal obtains the traffic sampling data to the first receiving end by receiving also.Object (for example, Dual-Phrase Distribution of Gas olid) is arranged when flowing through in inner tube, will inevitably cause disturbance and decay to the electromagnetic wave of emission, thereby make another electrode (pole plate) produce signal intensity.
For each concentration measuring electrode pair, a concentration measuring electrode in the concentration measuring electrode that wherein arranges in pairs is the second transmitting terminal electrode, another and concentration measuring electrode are the second receiving end electrode, the second transmitting terminal electrode is used for sending predetermined electromagnetic wave signal to the second receiving end electrode, and the recording electromagnetic wave signal obtains the concentration sampled data to the second receiving end by receiving also
In addition, the area of right each electrode of concentration measuring electrode is greater than the area of each electrode in a plurality of fluid-velocity survey electrode pairs.
And, each electrode pair for a plurality of fluid-velocity survey electrode pairs and at least one concentration measuring electrode centering, this part pipeline that these electrode pairs are set is made by nonmetallic materials, that is to say, a plurality of fluid-velocity survey electrode pairs and at least one concentration measuring electrode are arranged the bearing of trend at pipeline, and the pipe section that these electrode pairs are set is non-metal section, thereby the assurance electrode can be measured.Alternatively, this part pipeline section is made by nonmetallic materials (for example, can be the plastic material of high strength, lower resistance).
In addition, the nonmetallic pipe that above-mentioned electrode pair is set needs nested metal outer pipe as protection outward.As long as guarantee not have between two relative electrodes the metal barrier things such as metal pipe-wall.
Fig. 2 shows the flow measurement device according to the embodiment of the invention.Wherein, be provided with inner tube 4 in the pipeline 1; both sides outside the tube wall of inner tube 4; above-mentioned flow measurement electrode and concentration measuring electrode (not shown among Fig. 2) can be set; flange 2 is connected with outer tube (protection metal pipe); flow rate calculation processor 3 can be arranged on the top of inner tube 4, is connected with concentration measuring electrode with the flow measurement electrode.
According to another embodiment of the present invention, also provide a kind of flow-measuring method.
As shown in Figure 3, the Dual-Phrase Distribution of Gas olid flow-measuring method according to the embodiment of the invention comprises:
Step S301, the flow rate calculation processor receives the traffic sampling data that a plurality of fluid-velocity survey electrode pairs report, and receive by the concentration sampled data of at least one concentration measuring electrode to reporting, wherein, a plurality of fluid-velocity survey electrode pairs arrange outside tube wall with the bearing of trend of predetermined space along pipeline, each fluid-velocity survey electrode pair includes paired setting and is positioned at the fluid-velocity survey electrode of pipeline outer wall both sides, and each concentration measuring electrode is to including paired setting and being positioned at the concentration measuring electrode of pipeline outer wall both sides;
Step S303, flow rate calculation processor determine the flow of pipeline endoparticle material according to concentration sampled data and traffic sampling data.
Wherein, the method can further comprise: the flow rate calculation processor selects part or all of fluid-velocity survey electrode pair as a plurality of fluid-velocity survey electrode pairs that obtain and report the traffic sampling data from the set that all fluid-velocity survey electrode pairs form in advance.
Particularly, the traffic sampling data comprise that the distribution situation of each granule materials set in the pipeline that the sampling of a plurality of fluid-velocity survey electrode pairs obtains and each granule materials collective flow are through the temporal information of a plurality of fluid-velocity survey electrode pairs.And, when the flow rate calculation processor is determined the flow of pipeline endoparticle material according to concentration sampled data and traffic sampling data, the flow rate calculation processor according to same granule materials collective flow in the traffic sampling data through the mistiming of a plurality of fluid-velocity survey electrode pairs and the gap length between a plurality of fluid-velocity survey electrode pair, determine the flow velocity of pipeline endoparticle material, and determine the flow of pipeline endoparticle material according to the concentration that flow velocity and concentration sampled data represent.
Wherein, the flow rate calculation processor is by the similarity between the distribution situation of each granule materials set in the pipeline that a plurality of fluid-velocity survey electrode pair samplings are obtained, determine the traffic sampling data corresponding to same granule materials set, and obtain same granule materials collective flow through the mistiming of a plurality of fluid-velocity survey electrode pairs.
That is to say, the principle of measuring flow velocity is: the speed that calculates particle flux according to a certain particle cluster through mistiming of each group electrode.Device as shown in Figure 1, being provided with 4 groups of flow velocity measuring points (4 pairs of flow velocity potential electrode) is in order to adapt to the very large different operating modes of change in flow.That is: when the not high operating mode of flow velocity, use adjacent nearest two arrays of electrodes; When flow velocity is very high, adopt adjacent two arrays of electrodes farthest.Certainly, also can adopt more groups electrode, concrete electrode selection mode also can be according to actual conditions and flexible configuration.
Wherein, for each fluid-velocity survey electrode pair, a fluid-velocity survey electrode in the fluid-velocity survey electrode that wherein arranges in pairs is the first transmitting terminal electrode, another fluid-velocity survey electrode is the first receiving end electrode, the first transmitting terminal electrode is used for sending predetermined electromagnetic wave signal to the first receiving end electrode, and the recording electromagnetic wave signal obtains the traffic sampling data to the first receiving end by receiving also;
For each concentration measuring electrode pair, a concentration measuring electrode in the concentration measuring electrode that wherein arranges in pairs is the second transmitting terminal electrode, another and concentration measuring electrode are the second receiving end electrode, the second transmitting terminal electrode is used for sending predetermined electromagnetic wave signal to the second receiving end electrode, and the recording electromagnetic wave signal obtains the concentration sampled data to the second receiving end by receiving also.
By means of such scheme, flow measurement scheme of the present invention can realize for Dual-Phrase Distribution of Gas olid the measurement of flow, can be applicable to the scene of high flow rate and realize high-precision measurement, and implementation is simple, and cost is lower.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a Dual-Phrase Distribution of Gas olid flow measurement device is used for the flow of Dual-Phrase Distribution of Gas olid in the pipeline is measured, and it is characterized in that, comprising:
A plurality of fluid-velocity survey electrode pairs, along the outer wall setting at described pipeline of the bearing of trend of described pipeline, wherein, each fluid-velocity survey electrode pair includes paired setting and is positioned at the fluid-velocity survey electrode of described pipeline outer wall both sides with predetermined space;
At least one concentration measuring electrode pair, wherein, each concentration measuring electrode is to including paired setting and being positioned at the concentration measuring electrode of described pipeline outer wall both sides;
The flow rate calculation processor is connected to described a plurality of fluid-velocity survey electrode pair and described at least one concentration measuring electrode pair.
2. flow measurement device according to claim 1, it is characterized in that, for described each fluid-velocity survey electrode pair, a fluid-velocity survey electrode in the fluid-velocity survey electrode that wherein arranges in pairs is the transmitting terminal electrode, and another fluid-velocity survey electrode is the receiving end electrode.
3. flow measurement device according to claim 1, it is characterized in that, for each described concentration measuring electrode pair, a concentration measuring electrode in the concentration measuring electrode that wherein arranges in pairs is the transmitting terminal electrode, and another and concentration measuring electrode are the receiving end electrode.
4. flow measurement device according to claim 1 is characterized in that, the area of each electrode that described concentration measuring electrode is right is greater than the area of each electrode in described a plurality of fluid-velocity survey electrode pairs.
5. flow measurement device according to claim 1 is characterized in that, the quantity of described fluid-velocity survey electrode pair is 4.
6. flow measurement device according to claim 1 is characterized in that, for each electrode pair of described a plurality of fluid-velocity survey electrode pairs and described at least one concentration measuring electrode centering, settles this part pipeline of these electrode pairs to be made by nonmetallic materials.
7. a Dual-Phrase Distribution of Gas olid flow-measuring method is characterized in that, comprising:
The flow rate calculation processor receives the traffic sampling data that a plurality of fluid-velocity survey electrode pairs report, and receive by the concentration sampled data of at least one concentration measuring electrode to reporting, wherein, a plurality of fluid-velocity survey electrode pairs with predetermined space along the bearing of trend of pipeline in described pipeline outer wall setting, each fluid-velocity survey electrode pair includes paired setting and is positioned at the fluid-velocity survey electrode of described pipeline outer wall both sides, and each concentration measuring electrode is to including paired setting and being positioned at the concentration measuring electrode of described pipeline outer wall both sides;
Described flow rate calculation processor is determined the flow of described pipeline endoparticle material according to described concentration sampled data and described traffic sampling data.
8. flow-measuring method according to claim 7 is characterized in that, further comprises:
Described flow rate calculation processor selects part or all of fluid-velocity survey electrode pair as the described a plurality of fluid-velocity survey electrode pairs that obtain and report the traffic sampling data from the set that all fluid-velocity survey electrode pairs form in advance.
9. flow-measuring method according to claim 7, it is characterized in that, described traffic sampling data comprise that the distribution situation of each granule materials set in the described pipeline that described a plurality of fluid-velocity survey electrode pair sampling obtains and each granule materials collective flow are through the temporal information of described a plurality of fluid-velocity survey electrode pairs.
10. flow-measuring method according to claim 9 is characterized in that, described flow rate calculation processor determines that according to described concentration sampled data and described traffic sampling data the flow of described pipeline endoparticle material comprises:
Described flow rate calculation processor according to same granule materials collective flow in the described traffic sampling data through the mistiming of described a plurality of fluid-velocity survey electrode pairs and the gap length between described a plurality of fluid-velocity survey electrode pair, determine the flow velocity of described pipeline endoparticle material, and determine the flow of described pipeline endoparticle material according to the concentration that described flow velocity and described concentration sampled data represent.
11. flow-measuring method according to claim 10, it is characterized in that, described flow rate calculation processor is by the similarity between the distribution situation of each granule materials set in the described pipeline that described a plurality of fluid-velocity survey electrode pair samplings are obtained, determine the traffic sampling data corresponding to same granule materials set, and obtain same granule materials collective flow through the mistiming of described a plurality of fluid-velocity survey electrode pairs.
12. flow-measuring method according to claim 7, it is characterized in that, for described each fluid-velocity survey electrode pair, a fluid-velocity survey electrode in the fluid-velocity survey electrode that wherein arranges in pairs is the first transmitting terminal electrode, another fluid-velocity survey electrode is the first receiving end electrode, described the first transmitting terminal electrode is used for sending predetermined electromagnetic wave signal to described the first receiving end electrode, and the recording electromagnetic wave signal obtains the traffic sampling data to described the first receiving end by receiving also;
For each described concentration measuring electrode pair, a concentration measuring electrode in the concentration measuring electrode that wherein arranges in pairs is the second transmitting terminal electrode, another and concentration measuring electrode are the second receiving end electrode, described the second transmitting terminal electrode is used for sending predetermined electromagnetic wave signal to described the second receiving end electrode, and the recording electromagnetic wave signal obtains the concentration sampled data to described the second receiving end by receiving also.
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| CN2011102026110A CN102889909A (en) | 2011-07-18 | 2011-07-18 | Device and method for measuring gas and solid dual-phase flow |
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| CN105865553A (en) * | 2015-01-23 | 2016-08-17 | 北京斯威尔工业测量仪器有限公司 | A gas-solid two phase flow meter and a flow measuring method thereof |
| CN110715680A (en) * | 2018-07-11 | 2020-01-21 | 浙江大学 | Comprehensive experiment system for thermal performance of high-temperature molten fluid |
| CN116989851A (en) * | 2023-09-26 | 2023-11-03 | 北京唐安工业安全环保技术有限公司 | Method, device, equipment and system for detecting particulate matters in gas-solid two-phase fluid |
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