CN102721630A - Liquid-liquid isolation-type capillary viscometer - Google Patents
Liquid-liquid isolation-type capillary viscometer Download PDFInfo
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- CN102721630A CN102721630A CN2012102143000A CN201210214300A CN102721630A CN 102721630 A CN102721630 A CN 102721630A CN 2012102143000 A CN2012102143000 A CN 2012102143000A CN 201210214300 A CN201210214300 A CN 201210214300A CN 102721630 A CN102721630 A CN 102721630A
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Abstract
The invention discloses a liquid-liquid isolation-type capillary viscometer, which comprises a sample bottle, a solvent bottle, a liquid-liquid separator, a capillary I, a capillary II, an airbag-type pneumatic pump, a control system and a pneumatic system, wherein the capillary I, the liquid-liquid separator and the capillary II are sequentially connected with one another through a pipeline, and the other end of the capillary I is connected with the airbag-type pneumatic pump; and a branch is arranged on the pipeline joining the liquid-liquid separator and the capillary II, and the sample bottle and the solvent bottle are respectively connected with the branch pipeline. Compared with the traditional capillary viscometer and the influence of the fluctuation of the pump is eliminated, so that the measurement precision is improved, the measurement sensitivity and stability can be improved, and the temperature influence is small. The online measurement can be convenient to realize, and the automation degree is high.
Description
Technical field
The present invention relates to the isolated capillary viscosimeter of a kind of liquid-liquid.
Background technology
Viscosity measurement is well-known in the importance in many industrial sectors and scientific research field; Very extensive in sector applications such as oil, chemical industry, medical science, for example the application viscosity meter can be monitored the viscosity of synthetic reaction product, controls reaction end automatically; The production run of some food and medicine etc. is controlled automatically; The quality restrictions of various petroleum products and paint etc. all need be carried out viscosity measurement, and the viscosity of in medical science, measuring blood and biofluid has very important clinical meaning.Viscosity measurement commonly used has capillary viscosimeter (like Ostwald viscosimeter), measures viscosity with capillary viscosimeter, and employing is relative method (timesharing relatively).When measuring viscosity in this way, each condition of measuring is difficult to guarantee identical, so ratio of precision is lower, temperature influence is big, and complex operation step is difficult to realize robotization.
Summary of the invention
To above-mentioned prior art; The invention provides the isolated capillary viscosimeter of a kind of liquid-liquid; The present invention is provided with the simultaneously-measured scheme of a liquid-liquid isolator (this is to guarantee simultaneously-measured key) in the middle of adopting two kapillary series connection, has solved the low problem of measuring accuracy well and also can realize automatic on-line measurement.
The present invention realizes through following technical scheme:
The isolated capillary viscosimeter of a kind of liquid-liquid; Comprise sample bottle, solvent bottle, liquid-liquid isolator, kapillary I, kapillary II, gasbag-type air driven pump, control system, pneumatic system; Wherein, Kapillary I, liquid-liquid isolator are connected with kapillary II pipeline successively, and the other end of kapillary I is connected with the gasbag-type air driven pump; On liquid-liquid isolator and pipeline that the kapillary II is connected, be provided with branch road, sample bottle is connected with the branch road pipeline respectively with solvent bottle;
The two ends of said kapillary I, kapillary II are respectively equipped with a differential pressure pickup, and differential pressure pickup is connected with the control system circuit through amplifying circuit;
Pipeline between said branch road and the kapillary II is provided with operated pneumatic valve;
Pipeline between said kapillary I and liquid-liquid isolator is provided with switch electromagnetic valve;
Pipeline between said kapillary II and the pneumatic valve is provided with switch electromagnetic valve;
The Hall element at said liquid-liquid isolator two ends is connected with the control system circuit;
Said branch road is provided with switch electromagnetic valve;
The pipeline that said sample bottle is connected with branch road is provided with elastic bag formula air driven pump, respectively is provided with a retaining valve on the pipeline of elastic bag formula air driven pump both sides;
The pipeline that said solvent bottle is connected with branch road is provided with elastic bag formula air driven pump, respectively is provided with a retaining valve on the pipeline of elastic bag formula air driven pump both sides;
Said gasbag-type air driven pump, elastic bag formula air driven pump all are connected with pneumatic system through reversing solenoid valve;
Said switch electromagnetic valve all is connected with the control system circuit through driving circuit with reversing solenoid valve.
Said liquid-liquid isolator comprises housing, and the housing both sides respectively are provided with a Hall element, and Hall element is connected with the control system circuit; One side of housing is provided with the reference liquid entrance, and opposite side is provided with sample liquids and imports and exports; Be provided with flexible partition in the housing, the flexible partition stage casing is provided with disc magnet.See Fig. 3.
Said housing is by constituting through bolted left and right sides two parts, and further, the junction is provided with seal.
Said gasbag-type air driven pump comprises housing, cavity of formation in the housing--liquid storage cylinder, be provided with air bag (keeping apart gas and liquid) in the cavity, the housing upper end is provided with inflation inlet, and inflation inlet is communicated with the cavity upper end, and the lower end of housing is provided with the liquid gateway.
Said housing is by constituting through bolted two parts up and down.
Said elastic bag formula air driven pump comprises housing, forms a cavity---liquid storage cylinder in the housing, is provided with elastic bag in the cavity, and the housing upper end is provided with inflation inlet, and inflation inlet is communicated with elastic bag, and the lower end of housing is provided with the liquid gateway.Elastic bag formula air driven pump and gasbag-type air driven pump similar, unique difference is: the air bag of elastic bag formula air driven pump has elasticity, when gaseous tension is little in the air bag, can shrink voluntarily.
Said housing is by constituting through bolted two parts up and down.
Also be provided with liquid injection port on the said branch road, the liquid injection port place is provided with retaining valve.
Said control system, pneumatic system all are routine techniquess of the prior art, are to realize that easily the present invention does not have improvements to this, repeat no more as far as one of ordinary skill in the art.
Principle of work: a liquid-liquid isolator is set to two kapillaries in the middle of being cascaded, solvent liquid is flowed (but not flowing through differential pressure pickup) in pipeline with identical flow velocity with sample liquids, the while can not mix again mutually.Two differential pressure pickups are connected on two two ends capillaceous respectively; When two kinds of flow of liquid are crossed two kapillaries; Produce pressure drop at two kapillary two ends respectively; By the pressure differential (pressure difference signal send A/D converter to send in the microprocessor after amplifying circuit amplifies again, and A/D converter, microprocessor are the conventional components in the control system) at two kapillary two ends of differential pressure pickup measurement, again according to Poiseuille law (P=KQ η); And identical according to Q (volume flow rate) in two kapillaries, can push away formula:
η
r=(1/K)(P
2/P
1)；
Wherein: η
rBe relative viscosity, P
1Be the pressure reduction at reference capillary two ends, P
2Be the pressure reduction at sample kapillary two ends, K is a geometric constant capillaceous.
Microprocessor calculates relative viscosity according to formula.The derivation of equation is following:
According to Poiseuille law: (P=KQ η);
P
1=K
1Q η
1P
1: the pressure reduction at reference capillary two ends;
P
2=K
2Q η
2P
2: the pressure reduction at sample kapillary two ends;
K
1=8L
1/ л R
1 4K
1: the geometric constant of reference capillary;
K
2=8L
2/ л R
2 4K
2: sample geometric constant capillaceous;
P
2/P
1=K
2Qη
2/K
1Qη
1=K
2η
2/K
1η
1=K(η
2/η
1) K=K
2/K
1；
η
r=1/K (P
2/ P
1) η
r=η
2/ η
1(η
r: relative viscosity).
The course of work: after liquid-the liquid isolator charges into sample liquids; Solvent liquid in the gasbag-type air driven pump is under the effect of air pressure; Flow in kapillary I and the liquid-liquid isolator; Flexible partition in liquid-liquid isolator moves right and drives sample liquids and flows to the kapillary II under the extruding of solvent liquid; Because the non-resistance transmission (two kinds of liquid are full of liquid-liquid isolator inner chamber) of the incompressible and flexible partition of liquid has guaranteed that two kinds of liquid are with identical flow rate (capacitor in the similar circuit).The effect of two Hall elements is to be used for confirming that flexible partition moves to the position at two ends.
The effect of gasbag-type air driven pump is to send into solvent in kapillary I and the liquid-liquid isolator; It (is original creation parts of the present invention that solvent in while liquid-liquid isolator also can instead be delivered in the gasbag-type air driven pump; When to air-pump inflating; Liquid in the liquid storage cylinder is extruded, and liquid can be back in the liquid storage cylinder when venting), it can realize that fluid flows each other between gasbag-type air driven pump and liquid-liquid isolator; Solvent is used for repeatedly realizes that on-line automatic measurement provides assurance, can also save solvent.See Fig. 4.
The effect of elastic bag formula air driven pump is to send into the sample in the sample bottle or the solvent in the solvent bottle that (be original creation parts of the present invention, when when elastic bag is inflated, the liquid of liquid storage cylinder is pumped out in liquid-liquid isolator; When the elastic bag elastic shrinkage; Suck liquid from the outside, flow is to being confirmed by retaining valve), this provides assurance for getting liquid automatically; Because simple in structure can disposablely the use can be saved the cleaning to pump.See Fig. 5.
The effect of switch electromagnetic valve is a control direction of flow under the control system effect; The effect of reversing solenoid valve is under the control system effect, to control pneumatic system and air driven pump and operated pneumatic valve to make corresponding action; Get controls automatically such as liquid measurement with completion; This is conventional as far as one of ordinary skill in the art, realizes easily.
The isolated capillary viscosimeter of liquid-liquid of the present invention; Compare with traditional capillary viscosimeter; Following characteristics are arranged: because liquid-liquid isolator has guaranteed that the flow velocity in two kapillaries is identical, thereby can be in the formula that calculates viscosity (η r) accurately cancellation the Q item, make viscosity (η r) value only depend on the ratio of pressure; Can eliminate the influence of the fluctuation of pump like this, make that measuring accuracy is improved measuring accuracy.Because viscosity (η r) only depends on the ratio of pressure; The detection of pressure is accomplished by pressure transducer; Again because existing pressure transducer has very high sensitivity and stability (the pressure transducer technology that has maturation now can satisfy fully us requirement to measuring accuracy); Therefore, we can obtain the very high pressure parameter of precision.Because the present invention can accomplish synchro measure under identical temperature environment, only depend on that in viscosity (η r) value Influence of Temperature also is able to be eliminated, so temperature influence is little under the situation of ratio of pressure.And need not carry out density correction (not containing the density item in the formula) with sample rate is irrelevant.Because solvent can flow each other (condition that liquid-liquid isolator and gasbag-type air driven pump are created),, just can easily realize on-line automatic measurement so need only the fluid supply that changes sample bottle into on-line measurement between gasbag-type air driven pump and liquid-liquid isolator.At present; In industrial systems such as oil, chemical industry, medicine, food, dyestuff, glue, a lot of operation nodes all press for automatic on-line precise monitoring viscosity parameter to proceed to the index of which kind of degree and to control reaction end automatically as the various reactions of judgement.This working of an invention; To bring revolutionary raising (owing to realized automatic on-line precise monitoring viscosity parameter to the production efficiency and the product quality of above-mentioned industrial system; Supporting with existing ripe automatic control equipment again; Just can produce the automatic on-line precise monitoring viscosity parameter that above-mentioned related industries system presses for and the automatic control equipment of control production run automatically at once), so the present invention has the high characteristics of automaticity.Advantages such as in addition, the present invention is simple to operate in addition, easy to use, save solvent, manufacture easily, and is simple in structure, measures fast, with low cost.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a measuring principle synoptic diagram of the present invention.
Fig. 3 is the structural representation of liquid of the present invention-liquid isolator.
Fig. 4 is the structural representation of gasbag-type air driven pump of the present invention.
Fig. 5 is the structural representation of elastic bag formula air driven pump of the present invention.
Wherein, 1, pneumatic system; 2, reversing solenoid valve; 3, driving circuit; 4, amplifying circuit; 5, control system; 6, gasbag-type air driven pump; 7, differential pressure pickup I; 8, operated pneumatic valve; 9, differential pressure pickup II; 10, manual reverse of direction valve; 11, liquid injection port I; 12, kapillary I; 13, liquid-liquid isolator; 14, kapillary II; 15, sample bottle; 16, elastic bag formula air driven pump I; 17, switch electromagnetic valve; 18, manual impregnator; 19, liquid injection port II; 20, retaining valve; 21, elastic bag formula air driven pump II; 22, solvent bottle; 23, housing; 24, Hall element; 25, flexible partition; 26, disc magnet; 27, seal; 28, liquid storage cylinder; 29, air bag; 30, inflation inlet; 31, liquid gateway; 32, elastic bag.A, B, C, D represent that gas circuit connects, as: two A of place are arranged among the figure, and this two places gas circuit connects during expression work.G, h, J, K, Q indication circuit connect, as: two h of place are arranged among the figure, and this two places circuit connects during expression work.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
The isolated capillary viscosimeter of a kind of liquid-liquid; Comprise sample bottle 15, solvent bottle 22, liquid-liquid isolator 13, kapillary I 12, kapillary II 14, gasbag-type air driven pump 6, control system 5, pneumatic system 1; As shown in Figure 1; Wherein, kapillary I 12, liquid-liquid isolator 13 are connected with kapillary II 14 pipeline successively, and the other end of kapillary I 12 is connected with gasbag-type air driven pump 6; On liquid-liquid isolator 13 and pipeline that kapillary II 14 is connected, be provided with branch road, sample bottle 15 is connected with the branch road pipeline respectively with solvent bottle 22;
The two ends that the two ends of said kapillary I 12 are provided with differential pressure pickup I 7, kapillary II 14 are provided with differential pressure pickup II 9, two differential pressure pickups and are connected with control system 5 circuit through amplifying circuit 4 respectively;
Pipeline between said branch road and the kapillary II 14 is provided with operated pneumatic valve 8;
Pipeline between said kapillary I 12 and liquid-liquid isolator 13 is provided with switch electromagnetic valve 17;
Pipeline between said kapillary II 14 and the pneumatic valve 8 is provided with switch electromagnetic valve 17;
The Hall element 24 at said liquid-liquid isolator 20 two ends is connected with control system 5 circuit;
Said branch road is provided with switch electromagnetic valve 17;
The pipeline that said sample bottle 15 is connected with branch road is provided with elastic bag formula air driven pump I 16, respectively is provided with a retaining valve 20 on the pipeline of elastic bag formula air driven pump I 16 both sides;
The pipeline that said solvent bottle 22 is connected with branch road is provided with elastic bag formula air driven pump II 21, respectively is provided with a retaining valve 20 on the pipeline of elastic bag formula air driven pump II 21 both sides;
Said gasbag-type air driven pump 6, two elastic bag formula air driven pumps all are connected with pneumatic system 1 through reversing solenoid valve 2;
Said switch electromagnetic valve 17 all is connected with control system 5 circuit through driving circuit 3 with reversing solenoid valve 2.
Said liquid-liquid isolator 20 comprises housing 23, and housing 23 both sides respectively are provided with a Hall element 24, and Hall element 24 is connected with control system 5 circuit; The left side of housing 23 is provided with the reference liquid entrance, and the right side is provided with sample liquids and imports and exports; Be provided with flexible partition 25 in the housing 23, flexible partition 25 stage casings are provided with disc magnet 26.As shown in Figure 3.
Said housing 23 is by constituting through bolted left and right sides two parts, and further, the junction is provided with seal 27.
Said gasbag-type air driven pump 6 comprises housing 23, forms a cavity---liquid storage cylinder 28 in the housing, is provided with air bag 29 in the cavity; Housing 23 upper ends are provided with inflation inlet 30; Inflation inlet 30 is communicated with the cavity upper end, and the lower end of housing 23 is provided with liquid gateway 31, and is as shown in Figure 4.
Said housing 23 is by constituting through bolted two parts up and down.
The lower end of said gasbag-type air driven pump 6 also is connected with manual reverse of direction valve 10, and manual reverse of direction valve 10 is provided with liquid injection port I 11;
Said elastic bag formula air driven pump I 16 comprises housing 23; Form a cavity---liquid storage cylinder 28 in the housing 23, be provided with elastic bag 32 in the cavity, housing 23 upper ends are provided with inflation inlet 30; Inflation inlet 30 is communicated with elastic bag 32, and the lower end of housing 23 is provided with liquid gateway 31.Elastic bag formula air driven pump I 16 and gasbag-type air driven pump 6 similar, unique difference is: the air bag of elastic bag formula air driven pump I 16 has elasticity, when gaseous tension is little in the air bag, can shrink voluntarily, and is as shown in Figure 5.The structure of elastic bag formula air driven pump II 21 is identical with the structure of elastic bag formula air driven pump I 16.
Said housing 23 is by constituting through bolted two parts up and down.
Also be provided with liquid injection port II 19 on the said branch road, liquid injection port 19 II places are provided with retaining valve 20, during use, can manually in the liquid injection port II, inject liquid through manual impregnator 18.
Said control system, pneumatic system all are routine techniquess of the prior art, are to realize that easily the present invention does not have improvements to this, repeat no more as far as one of ordinary skill in the art.
Principle of work: a liquid-liquid isolator 13 is set to two kapillaries in the middle of being cascaded, solvent liquid is flowed (but not flowing through differential pressure pickup) in pipeline with identical flow velocity with sample liquids, the while can not mix again mutually.Two differential pressure pickups are connected on two two ends capillaceous respectively; When two kinds of flow of liquid are crossed two kapillaries; Produce pressure drop at two kapillary two ends respectively; By the pressure differential (pressure difference signal send A/D converter to send in the microprocessor after amplifying circuit amplifies again, and A/D converter, microprocessor are the conventional components in the control system) at two kapillary two ends of differential pressure pickup measurement, again according to Poiseuille law (P=KQ η); And identical according to Q (volume flow rate) in two kapillaries, can push away formula:
η
r=(1/K)(P
2/P
1)；
Wherein: η
rBe relative viscosity, P
1Be the pressure reduction at reference capillary two ends, P
2Be the pressure reduction at sample kapillary two ends, K is geometric constant capillaceous, and is as shown in Figure 2.
Microprocessor calculates relative viscosity according to formula.The derivation of equation is following:
According to Poiseuille law: (P=KQ η);
P
1=K
1Q η
1P
1: the pressure reduction at reference capillary (kapillary I) two ends;
P
2=K
2Q η
2P
2: the pressure reduction at sample kapillary (kapillary II) two ends;
K
1=8L
1/ л R
1 4K
1: the geometric constant of reference capillary;
K
2=8L
2/ л R
2 4K
2: sample geometric constant capillaceous;
P
2/P
1=K
2Qη
2/K
1Qη
1=K
2η
2/K
1η
1=K(η
2/η
1)K=K
2/K
1；
η
r=1/K (P
2/ P
1) η
r=η
2/ η
1(η
r: relative viscosity).
The course of work: after liquid-liquid isolator 13 charges into article liquid; Solvent liquid in the gasbag-type air driven pump 6 is under the effect of air pressure; Flow in kapillary I 12 and the liquid-liquid isolator 13; Flexible partition 25 in liquid-liquid isolator 13 moves right and drives sample liquids and flows to kapillary II 14 under the extruding of solvent liquid; Because the non-resistance transmission (two kinds of liquid are full of liquid-liquid isolator 13 inner chambers) of the incompressible and flexible partition 25 of liquid has guaranteed that two kinds of liquid are with identical flow rate.The effect of two Hall elements 24 is to be used for confirming that flexible partition 25 moves to the position at two ends.
The effect of gasbag-type air driven pump 6 is to send into solvent in kapillary I 12 and the liquid-liquid isolator 13; It (is original creation parts of the present invention that solvent in while liquid-liquid isolator 13 also can instead be delivered in the gasbag-type air driven pump 6; When to air bag 29 inflations, the liquid in the liquid storage cylinder 28 is extruded, and liquid can be back in the liquid storage cylinder 28 when venting); It can realize that fluid flows each other between gasbag-type air driven pump 6 and liquid-liquid isolator 13; Solvent is used for repeatedly realizes that on-line automatic measurement provides assurance, can also save solvent, see Fig. 4.
The effect of elastic bag formula air driven pump is to send into the solvent in sample in the sample bottle 15 or the solvent bottle 22 in liquid-liquid isolator 13 that (be original creation parts of the present invention, when to elastic bag 32 inflations, the liquid of liquid storage cylinder 28 is pumped out; When elastic bag 32 elastic shrinkage; Suck liquid from the outside, flow is to being confirmed by retaining valve 20), this provides assurance for getting liquid automatically; Because simple in structure can disposablely the use can be saved the cleaning to pump.See Fig. 5.
The effect of switch electromagnetic valve 17 is control direction of flow under the control system effect; Reversing solenoid valve 2 control pneumatic system 1 under control system 5 effects is made corresponding action with operated pneumatic valve 8; Get controls automatically such as liquid measurement with completion; This is conventional as far as one of ordinary skill in the art, realizes easily.
Job step:
(1) emptying elastic bag formula air driven pump I 16 and elastic bag formula air driven pump II 21; Prepare for imbibition simultaneously: control system 5 control corresponding solenoid valve (B, D) are connected; Pneumatic system 1 is inflation in elastic bag formula air driven pump I 16 and elastic bag formula air driven pump II 21; Solenoid valve (Q) between solenoid valve (k), kapillary II 14 and the pneumatic valve 8 on the branch road is connected simultaneously, discharges gas.
(2) emptying liquid-liquid isolator 13 right chambeies: process is: control system 5 control corresponding solenoid valve (A) are connected; Pneumatic system 1 is inflated in gasbag-type air driven pump 6; The left chamber that is pressed into the solvent in the gasbag-type air driven pump 6 liquid-liquid isolator 13 (makes flexible partition move to right-hand member the right chamber emptying of liquid-liquid isolator; Whether flexible partition moves to right-hand member is detected by Hall element), corresponding solenoid valve (J, Q) is connected simultaneously, makes fluid flow.
(3) inject solvent to liquid-liquid isolator 13: process is: control system 5 control corresponding solenoid valve (C, D) are connected; Pneumatic system 1 is to elastic bag formula air driven pump II 21 and operated pneumatic valve 8 inflations; Corresponding solenoid valve (J, k) is connected simultaneously; Make fluid flow, solvent gets into liquid-liquid isolator 13 right chambeies (solvent in liquid-chamber, a liquid isolator left side is squeezed go back in the gasbag-type air driven pump simultaneously) in the solvent bottle 22 under 21 effects of elastic bag formula air driven pump II.
(4) measure geometric constant K: process is: control system 5 control corresponding solenoid valve (A) are connected; Pneumatic system 1 is inflated in gasbag-type air driven pump 6; Solvent in the gasbag-type air driven pump 6 gets into liquid-liquid isolator 13 left chambeies through capillary I 12 under gas pressure; Solvent in liquid-liquid isolator 13 right chambeies is extruded away simultaneously, flows into kapillary II 14 and accomplishes measurement K.
(5) inject sample to liquid-liquid isolator 13: process is: control system 5 control corresponding solenoid valve (B, C) are connected; Pneumatic system 1 is to elastic bag formula air driven pump I 16 and operated pneumatic valve 8 inflations; Corresponding solenoid valve (J, k) is connected simultaneously; Make fluid flow, the sample in the sample bottle 15 is feed liquor-liquid isolator 13 right chambeies under the effect of elastic bag formula air driven pump I 16, accomplish sampling (solvent in liquid-chamber, a liquid isolator left side is squeezed back in the gasbag-type air driven pump simultaneously).
(6) measuring samples: process is: control system 5 control corresponding solenoid valve (A) are connected; Pneumatic system 1 is inflated in gasbag-type air driven pump 6; Solvent in the gasbag-type air driven pump 6 gets into liquid-liquid isolator 13 left chambeies through capillary I 12 under gas pressure; Sample in liquid-liquid isolator 13 right chambeies is extruded away simultaneously, flows into kapillary II 14 and accomplishes measuring samples.
Claims (7)
1. isolated capillary viscosimeter of liquid-liquid; It is characterized in that: comprise sample bottle, solvent bottle, liquid-liquid isolator, kapillary I, kapillary II, gasbag-type air driven pump, control system, pneumatic system; Wherein, Kapillary I, liquid-liquid isolator are connected with kapillary II pipeline successively, and the other end of kapillary I is connected with the gasbag-type air driven pump; On liquid-liquid isolator and pipeline that the kapillary II is connected, be provided with branch road, sample bottle is connected with the branch road pipeline respectively with solvent bottle;
The two ends of said kapillary I, kapillary II are respectively equipped with a differential pressure pickup, and differential pressure pickup is connected with the control system circuit through amplifying circuit;
Pipeline between said branch road and the kapillary II is provided with operated pneumatic valve;
Pipeline between said kapillary I and liquid-liquid isolator is provided with switch electromagnetic valve;
Pipeline between said kapillary II and the pneumatic valve is provided with switch electromagnetic valve;
The Hall element at said liquid-liquid isolator two ends is connected with the control system circuit;
Said branch road is provided with switch electromagnetic valve;
The pipeline that said sample bottle is connected with branch road is provided with elastic bag formula air driven pump, respectively is provided with a retaining valve on the pipeline of elastic bag formula air driven pump both sides;
The pipeline that said solvent bottle is connected with branch road is provided with elastic bag formula air driven pump, respectively is provided with a retaining valve on the pipeline of elastic bag formula air driven pump both sides;
Said gasbag-type air driven pump, elastic bag formula air driven pump all are connected with pneumatic system through reversing solenoid valve;
Said switch electromagnetic valve all is connected with the control system circuit through driving circuit with reversing solenoid valve.
2. the isolated capillary viscosimeter of a kind of liquid-liquid according to claim 1 is characterized in that: said liquid-liquid isolator comprises housing, and the housing both sides respectively are provided with a Hall element, and Hall element is connected with the control system circuit; One side of housing is provided with the reference liquid entrance, and opposite side is provided with sample liquids and imports and exports; Be provided with flexible partition in the housing, the flexible partition stage casing is provided with disc magnet.
3. the isolated capillary viscosimeter of a kind of liquid-liquid according to claim 1; It is characterized in that: said gasbag-type air driven pump comprises housing; Cavity of formation in the housing--liquid storage cylinder, be provided with air bag in the cavity, the housing upper end is provided with inflation inlet; Inflation inlet is communicated with the cavity upper end, and the lower end of housing is provided with the liquid gateway.
4. the isolated capillary viscosimeter of a kind of liquid-liquid according to claim 1; It is characterized in that: said elastic bag formula air driven pump comprises housing; Form a cavity---liquid storage cylinder in the housing, be provided with elastic bag in the cavity, the housing upper end is provided with inflation inlet; Inflation inlet is communicated with elastic bag, and the lower end of housing is provided with the liquid gateway.
5. according to claim 2 or the isolated capillary viscosimeter of 3 or 4 described a kind of liquid-liquid, it is characterized in that: said housing is by constituting through bolted two parts.
6. the isolated capillary viscosimeter of a kind of liquid-liquid according to claim 1 is characterized in that: also be provided with liquid injection port on the said branch road, the liquid injection port place is provided with retaining valve.
7. the isolated capillary viscosimeter of a kind of liquid-liquid according to claim 1, it is characterized in that: the lower end of said gasbag-type air driven pump also is connected with the manual reverse of direction valve, and the manual reverse of direction valve is provided with liquid injection port.
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|---|---|---|---|
| CN 201210214300 CN102721630B (en) | 2012-06-27 | 2012-06-27 | Liquid-liquid isolation-type capillary viscometer |
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|---|---|---|---|
| CN 201210214300 CN102721630B (en) | 2012-06-27 | 2012-06-27 | Liquid-liquid isolation-type capillary viscometer |
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| CN1195401A (en) * | 1995-09-07 | 1998-10-07 | 微动公司 | Viscosimeter calibration system and method of operating same |
| US20040099060A1 (en) * | 2002-11-23 | 2004-05-27 | Johan Kijlstra | Device and method for characterizing a capillary system |
| CN1959372A (en) * | 2006-11-28 | 2007-05-09 | 中北大学 | Rheological behavior mensuration instrument for system of supercutical fluid - polymer |
| CN202661352U (en) * | 2012-06-27 | 2013-01-09 | 山东大学 | Liquid-liquid separation type capillary viscometer |
-
2012
- 2012-06-27 CN CN 201210214300 patent/CN102721630B/en not_active Expired - Fee Related
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|---|---|---|---|---|
| US3548638A (en) * | 1967-10-05 | 1970-12-22 | Toray Industries | Apparatus and method for continuously determining viscosity |
| CN1076027A (en) * | 1992-12-14 | 1993-09-08 | 陈生 | Capillary viscosity is taken into account the assay method of liquid viscosity |
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