CN101576567B - Flow velocity measurement method for high temperature melt - Google Patents
Flow velocity measurement method for high temperature melt Download PDFInfo
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- CN101576567B CN101576567B CN2009100877402A CN200910087740A CN101576567B CN 101576567 B CN101576567 B CN 101576567B CN 2009100877402 A CN2009100877402 A CN 2009100877402A CN 200910087740 A CN200910087740 A CN 200910087740A CN 101576567 B CN101576567 B CN 101576567B
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- signal
- flow velocity
- choked flow
- flow piece
- high temperature
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- 238000000691 measurement method Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 abstract description 16
- 229910052782 aluminium Inorganic materials 0.000 abstract description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 15
- 239000007788 liquid Substances 0.000 abstract description 14
- 238000005259 measurement Methods 0.000 abstract description 9
- 239000003792 electrolyte Substances 0.000 abstract description 4
- 238000005868 electrolysis reaction Methods 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract 3
- 230000001131 transforming effect Effects 0.000 abstract 2
- 238000009853 pyrometallurgy Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 229910052742 iron Inorganic materials 0.000 description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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Abstract
The invention relates to a flow velocity measurement method for a high temperature melt, in particular to a flow velocity measurement method for a high temperature melt during the pyrometallurgical process, especially for the molten salt electrolyte and the aluminium liquid during the aluminium electrolysis. The method is characterized in that the measuring process comprises the following steps: firstly, putting a flow blocking part into a fluid region to be tested; secondly, transmitting the applied force on the flow blocking part to a force sensor through a rigidly connected transmission part, transforming the force signal into an electric signal, and measuring an rotational angle of the flow blocking part by using an angular sensor to obtain the flowing direction of the fluid; thirdly, transforming the analog signal of the sensor into a digital signal; and fourthly, changing the signal into a display signal to be output to a display instrument and/or storing the signal into a memorizer. The method has the characteristics of low labor intensity, real-time measurement of the flow velocity, high measuring accuracy, and the like. The method can measure both the flow velocity of the aluminium liquid in the electrolytic bath and the flow velocity of the electrolyte.
Description
Technical field
A kind of flow velocity measurement method for high temperature melt relates to high-temperature fusant in a kind of pyrometallurgical smelting process, the particularly measuring method of aluminium electrolysis process electrolyte fused salt and flow rate of aluminium liquid.
Background technology
At present, the measurement of flow rate of aluminium liquid is mainly iron staff corrode method in the aluminium cell, and its ultimate principle is that the size of the excellent meltage of the pure iron in the electrolytic tank is relevant with the flow velocity and the direction of aluminium liquid, and confirms the flow direction and the velocity magnitude of aluminium liquid with this.Its shortcoming is: the size of iron staff meltage and the relation of flow rate of aluminium liquid need to demarcate in advance; During measurement, electrolyzer temperature and electrolyte superheat degree influence the iron staff meltage; The chemical constitution of iron staff influences the iron staff meltage; Iron staff after the measurement need be got the cross section, and reads area of section, and big and judgements naked eyes of labour intensity can influence measuring accuracy; This method can only MEASUREMENT OF Al liquid flow velocity, the electrolytical flow velocity of energy measurement not.
Summary of the invention
The object of the invention is exactly the deficiency that exists to above-mentioned prior art, provides that a kind of to have labour intensity little, measurement flow rate value immediately, the flow velocity measurement method for high temperature melt that measuring accuracy is high.
The objective of the invention is to realize through following technical proposals.
A kind of flow velocity measurement method for high temperature melt is characterized in that its measuring process may further comprise the steps:
(1) choked flow piece is put into fluid mass to be measured;
(2) acting force that choked flow piece is suffered reaches force transducer through rigidly connected transmission part, is the signal of electricity with the signal transition of power; Measure the angle that choked flow piece rotates with angular transducer, obtain the direction that fluid flows;
(3) analog signal conversion with sensor becomes digital signal, carries out calculation process in conjunction with the fluid density ρ of input, the resistance coefficient k and the projected area A parameter of choked flow piece,
(4) signal is become that shows signal exports Displaying Meter to and/or with signal storage to storer.
A kind of flow velocity measurement method for high temperature melt of the present invention is characterized in that the device that described testing process adopts comprises:
Choked flow piece-this choked flow piece is positioned at the bottommost of device;
Rigid of transmission part-this rigid of transmission part is a bar rigidity stock; The lower end and the choked flow piece of bar are affixed;
Countervane-this countervane is positioned at the bottom of the rigid of transmission part stock of choked flow piece top;
Angular transducer-this angular transducer connects with rigid of transmission part stock upper end;
Pressure transducer-this pressure transducer connects with rigid of transmission part stock top, angular transducer below;
The signal output part of computing machine-this computing machine and angular transducer and pressure transducer links, and according to the output signal, calculates and write down the speed and the direction of high-temperature fusant velocity field.
A kind of flow velocity measurement method for high temperature melt of the present invention is characterized in that described choked flow piece is removable, is non-magnetic conduction substance.
A kind of flow velocity measurement method for high temperature melt of the present invention is characterized in that described countervane is a schistose texture.
Method of the present invention, it is little to have labour intensity during use, measurement flow rate value immediately, characteristics such as measuring accuracy height.This kind method not only can be surveyed the flow velocity of aluminium liquid in the electrolytic tank also can measure electrolytical flow velocity.
Description of drawings
Fig. 1 is the structural representation of the equipment therefor of the inventive method;
Embodiment
A kind of flow velocity measurement method for high temperature melt, the device that its testing process adopts comprises:
This choked flow piece of choked flow piece 1-is positioned at the bottommost of device, can be made by stainless steel, and is hemispherical, and diameter is 5～100mm;
This rigid of transmission part of rigid of transmission part 2-is a bar rigidity stock, is processed diameter 3～30mm by stainless steel; The lower end and the choked flow piece of bar are affixed;
This countervane of countervane 3-can be made by stainless steel, is schistose texture, is rectangle or triangle, and thickness is 2～10mm, is positioned at the bottom of the rigid of transmission part stock of choked flow piece top;
This angular transducer of angular transducer 4-is to connect with rigid of transmission part stock upper end;
This pressure transducer of pressure transducer 5-is to connect with rigid of transmission part stock top, angular transducer below;
The signal output part of this computing machine of computing machine 6-and angular transducer and pressure transducer links, and according to the output signal, calculates and write down the speed and the direction of high-temperature fusant velocity field.
During operation, choked flow piece is put into fluid mass to be measured, fluid flows choked flow piece is produced pressure; The size of its directed force F and rate of flow of fluid V square are directly proportional; ρ is directly proportional with fluid density, and the projected area A in the speed vertical direction is directly proportional with choked flow piece, i.e. F=k* ρ * A*V
2/ 2 (k is the resistance coefficient of choked flow piece); The acting force that choked flow piece is suffered reaches force transducer through rigidly connected transmission part, is the signal of electricity with the signal transition of power.Measure the angle that choked flow piece rotates with angular transducer, obtain the direction that fluid flows; The analog signal conversion of sensor is become digital signal, carry out calculation process in conjunction with the parameter (the resistance coefficient k of fluid density ρ, choked flow piece and projected area A) of input,
With signal become that shows signal exports Displaying Meter to and/or with signal storage to storer, through the testing result of computer real-time, calculate and the speed and the direction of record high-temperature fusant velocity field according to angular transducer and pressure transducer.
Embodiment
It is the hemispheric choked flow piece of 15mm that stainless steel is made into diameter, and it is the stock of 4mm that the choked flow piece upper end connects the diameter of being processed by stainless steel.Stock upper end links to each other with pressure transducer with angular transducer, and stock bottom and thickness are that the length of side of 3mm is that the equilateral square countervane of 40mm welds mutually.Write down the angle A 1 of angular transducer and the pressure F1 of pressure transducer earlier.Then this flow rate measuring device is put into electrolytic tank, make stock, and choked flow piece is sunk in the aluminium liquid perpendicular to surface level.Because flowing of aluminium liquid can promote choked flow piece and depart from original position.Countervane keeps parallel with flow path direction under the effect of aluminium liquid.Read the angle A 2 and pressure F2 of this moment.According to F1 and F2 and lever principle, extrapolate the directed force F on the choked flow piece.Test institute value is following: A1=15 °, and A2=23 °, F1=0.017kg, F2=0.645kg gets F=0.064kg, the projected area A=0.0007065m of choked flow piece
2, resistance coefficient k=0.83, aluminium liquid density p=2300kg/m3.According to formula
Can extrapolate flow velocity is 0.0974m/s.Thereby can record flow rate of aluminium liquid is 0.0974m/s, and direction is for becoming 8 ° with the measurement inceptive direction.
Claims (4)
1. flow velocity measurement method for high temperature melt is characterized in that its measuring process may further comprise the steps:
(1) choked flow piece is put into fluid mass to be measured; The said fluid measured of treating is the fluid that high-temperature fusant flows and produces;
(2) acting force that choked flow piece is suffered reaches pressure transducer through rigidly connected transmission part, and the signal transition of the pressure that pressure transducer is obtained be electric signal; Measure the angle that choked flow piece rotates with angular transducer, obtain the direction that said fluid flows;
(3) analog signal conversion with described pressure transducer and angular transducer becomes digital signal; Carry out calculation process in conjunction with the fluid density ρ of input, the resistance coefficient k and the projected area A parameter of choked flow piece, getting rate of flow of fluid
F is the pressure that fluid flows choked flow piece is produced;
(4) the described digital signal of step (3) being become shows signal exports Displaying Meter to and/or described digital signal is stored to storer.
2. a kind of flow velocity measurement method for high temperature melt according to claim 1 is characterized in that the device that described measuring process adopts comprises:
Choked flow piece-this choked flow piece is positioned at the bottommost of device;
Rigid of transmission part-this rigid of transmission part is a bar rigidity stock; The lower end and the choked flow piece of bar are affixed;
Countervane-this countervane is positioned at the bottom of the rigid of transmission part rigidity stock of choked flow piece top;
Angular transducer-this angular transducer connects with rigid of transmission part rigidity stock upper end;
Pressure transducer-this pressure transducer connects with rigid of transmission part stock top, angular transducer below;
The signal output part of computing machine-this computing machine and angular transducer and pressure transducer links, and according to the output signal, calculates and record high-temperature fusant flow velocity and direction.
3. a kind of flow velocity measurement method for high temperature melt according to claim 2 is characterized in that described choked flow piece is removable, is non-magnetic conduction substance.
4. a kind of flow velocity measurement method for high temperature melt according to claim 2, what it is characterized in that described countervane is schistose texture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100877402A CN101576567B (en) | 2009-06-24 | 2009-06-24 | Flow velocity measurement method for high temperature melt |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100877402A CN101576567B (en) | 2009-06-24 | 2009-06-24 | Flow velocity measurement method for high temperature melt |
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| Publication Number | Publication Date |
|---|---|
| CN101576567A CN101576567A (en) | 2009-11-11 |
| CN101576567B true CN101576567B (en) | 2012-03-21 |
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| CN102590552B (en) * | 2012-01-18 | 2014-07-23 | 厦门大学 | Device and method for measuring long-term average flow rate of water current |
| CN104569480B (en) * | 2015-02-04 | 2018-10-16 | 西安科技大学 | A kind of liquid impulse force Flow speed measurer and its measurement method |
| CN107907232A (en) * | 2017-12-21 | 2018-04-13 | 沈阳鼓风机集团股份有限公司 | For measuring the temperature pressure combinations probe of turbomachinery interior flow field |
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