CN102721630B - Liquid-liquid isolation-type capillary viscometer - Google Patents
Liquid-liquid isolation-type capillary viscometer Download PDFInfo
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- CN102721630B CN102721630B CN 201210214300 CN201210214300A CN102721630B CN 102721630 B CN102721630 B CN 102721630B CN 201210214300 CN201210214300 CN 201210214300 CN 201210214300 A CN201210214300 A CN 201210214300A CN 102721630 B CN102721630 B CN 102721630B
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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 of many industrial sectors and field of scientific study, 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, automatically control reaction end, the production run of some food and medicine etc. is controlled automatically, the quality restrictions of various petroleum products and paint etc. all need to carry out viscosity measurement, and the viscosity of measuring blood and biofluid in medical science has very important clinical meaning.Viscosity measurement commonly used has capillary viscosimeter (such as 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 large, and complex operation step is difficult to realize robotization.
Summary of the invention
For above-mentioned prior art, the invention provides the isolated capillary viscosimeter of a kind of liquid-liquid, the present invention arranges 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 well the low problem of measuring accuracy and also can realize automatic on-line measurement.
The present invention is achieved by the following technical solutions:
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 pipeline and are connected with the kapillary II, the other end of kapillary I is connected with the gasbag-type air driven pump; Be provided with branch road at liquid-liquid isolator with the pipeline that the kapillary II is connected, sample bottle is connected with solvent bottle with the branch road pipeline and is connected;
The two ends of described kapillary I, kapillary II are respectively equipped with a differential pressure pickup, and differential pressure pickup is connected with the control system circuit by amplifying circuit;
Pipeline between described branch road and the kapillary II is provided with operated pneumatic valve;
Pipeline between described kapillary I and liquid-liquid isolator is provided with switch electromagnetic valve;
Pipeline between described kapillary II and the pneumatic valve is provided with switch electromagnetic valve;
The Hall element at described liquid-liquid isolator two ends is connected with the control system circuit;
Described branch road is provided with switch electromagnetic valve;
The pipeline that described 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 described 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;
Described gasbag-type air driven pump, elastic bag formula air driven pump all are connected with pneumatic system by reversing solenoid valve;
Described switch electromagnetic valve and reversing solenoid valve all are connected with the control system circuit by driving circuit.
Described 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.
Described housing is made of the left and right sides two parts that are bolted, and further, the junction is provided with seal.
Described gasbag-type air driven pump comprises housing, cavity of formation in the housing--liquid storage cylinder, be provided with air bag (gas and liquid are kept apart) 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 discharge entrance.
Described housing is made of the up and down two parts that are bolted.
Described 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 discharge entrance.Elastic bag formula air driven pump and gasbag-type air driven pump structure are similar, and 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.
Described housing is made of the up and down two parts that are bolted.
Also be provided with liquid injection port on the described branch road, the liquid injection port place is provided with retaining valve.
Described control system, pneumatic system all are routine techniquess of the prior art, are to realize that easily the present invention, repeats no more without improvements this for one of ordinary skill in the art.
Principle of work: two kapillaries are arranged a liquid-liquid isolator 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, can not mix mutually again simultaneously.Two differential pressure pickups are connected on respectively two two ends capillaceous, when two kinds of liquid flow through two kapillaries, produce pressure drop at two kapillary two ends respectively, (pressure difference signal send A/D converter to send in the microprocessor after amplifying circuit amplifies again to measure the pressure differential at two kapillary two ends by differential pressure pickup, A/D converter, microprocessor are the conventional components in the control system), again according to Poiseuille law (P=KQ η), and according to Q(volume flow rate in two kapillaries) identical, can push away to get 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.
Microprocessor calculates relative viscosity according to formula.The derivation of equation is as follows:
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 is filled with 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 for determining that flexible partition moves to the position at two ends.
The effect of gasbag-type air driven pump is that solvent is sent 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, liquid can be back in the liquid storage cylinder when venting), it can realize that fluid flows mutually between gasbag-type air driven pump and liquid-liquid isolator, can make like this solvent Reusability provide assurance for realizing on-line automatic measurement, can also save solvent.See Fig. 4.
The effect of elastic bag formula air driven pump is that the sample in the sample bottle or the solvent in the solvent bottle are sent in liquid-liquid isolator (is original creation parts of the present invention, when inflating to elastic bag, the liquid of liquid storage cylinder is pumped out, when the elastic bag elastic shrinkage, suck liquid from the outside, liquid flows to by retaining valve to be determined), this provides assurance for automatically getting liquid, 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 to control direction of flow under the control system effect, the effect of reversing solenoid valve is control pneumatic system and air driven pump and the corresponding action of operated pneumatic valve do under the control system effect, to finish automatically controls such as getting the liquid measurement, this is conventional for 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 is 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 like this fluctuation of pump on the impact of measuring accuracy, so that measuring accuracy is improved.Because viscosity (η r) only depends on the ratio of pressure, the detection of pressure is finished by pressure transducer, again because existing pressure transducer has very high sensitivity and stability (existing ripe pressure sensor technique can satisfy us fully to the requirement of 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 the impact of temperature also is eliminated, so temperature influence is little in the situation of ratio of pressure.And do not need to carry out density correction (not containing the density item in the formula) with sample rate is irrelevant.Because solvent can flow mutually (condition that liquid-liquid isolator and gasbag-type air driven pump are created), so need only the fluid supply that sample bottle is changed into on-line measurement, just can easily realize on-line automatic measurement between gasbag-type air driven pump and liquid-liquid isolator.At present, in the industrial systems such as oil, chemical industry, medicine, food, dyestuff, glue, a lot of procedure-nodes all in the urgent need to automatic on-line precise monitoring viscosity parameter with as judging that various reactions proceed to the index of which kind of degree and automatically control reaction end.This working of an invention, to bring revolutionary raising (owing to realized automatic on-line precise monitoring viscosity parameter to production efficiency and the product quality of above-mentioned industrial system, supporting with the automatic control equipment of existing maturation again, just can produce at once above-mentioned related industries system in the urgent need to automatic on-line precise monitoring viscosity parameter and the automatic automatic control equipment of production control process), so the present invention has the high characteristics of automaticity.In addition, the present invention in addition simple to operate, easy to use, save solvent, manufacture easily, simple in structure, measure fast the advantage such as with low cost.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is 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 discharge entrance; 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
The present invention is further illustrated below in conjunction with accompanying drawing.
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 successively pipeline and are connected with the kapillary II, the other end of kapillary I 12 is connected with gasbag-type air driven pump 6; Are connected the pipeline that connects with the kapillary II at liquid-liquid isolator 13 and are provided with branch road, sample bottle 15 is connected with solvent bottle and is connected with the branch road pipeline respectively;
The two ends that the two ends of described 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 by amplifying circuit 4 respectively;
Pipeline between described branch road and the kapillary II 14 is provided with operated pneumatic valve 8;
Pipeline between described kapillary I 12 and liquid-liquid isolator 13 is provided with switch electromagnetic valve 17;
Pipeline between described kapillary II 14 and the pneumatic valve 8 is provided with switch electromagnetic valve 17;
The Hall element 24 at described liquid-liquid isolator 13 two ends is connected with control system 5 circuit;
Described branch road is provided with switch electromagnetic valve 17;
The pipeline that described 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 described 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;
Described gasbag-type air driven pump 6, two elastic bag formula air driven pumps all are connected with pneumatic system 1 by reversing solenoid valve 2;
Described switch electromagnetic valve 17 is connected with reversing solenoid valve and all is connected with control system 5 circuit by driving circuit 3.
Described liquid-liquid isolator 13 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.
Described housing 23 is made of the left and right sides two parts that are bolted, and further, the junction is provided with seal 27.
Described 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 discharge entrance 31, as shown in Figure 4.
Described housing 23 is made of the up and down two parts that are bolted.
The lower end of described 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;
Described elastic bag formula air driven pump I 16 comprises housing 23, cavity of housing 23 interior formation---liquid storage cylinder 28 is 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 discharge entrance 31.Elastic bag formula air driven pump I 16 is similar with gasbag-type air driven pump 6 structures, and 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, as shown in Figure 5.The structure of the structure and elasticity gasbag-type air driven pump I 16 of elastic bag formula air driven pump II 21 is identical.
Described housing 23 is made of the up and down two parts that are bolted.
Also be provided with liquid injection port II 19 on the described branch road, liquid injection port 19 II places are provided with retaining valve 20, during use, and can be by the manual filling liquid in the liquid injection port II of manual impregnator 18.
Described control system, pneumatic system all are routine techniquess of the prior art, are to realize that easily the present invention, repeats no more without improvements this for one of ordinary skill in the art.
Principle of work: two kapillaries are arranged a liquid-liquid isolator 13 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, can not mix mutually again simultaneously.Two differential pressure pickups are connected on respectively two two ends capillaceous, when two kinds of liquid flow through two kapillaries, produce pressure drop at two kapillary two ends respectively, (pressure difference signal send A/D converter to send in the microprocessor after amplifying circuit amplifies again to measure the pressure differential at two kapillary two ends by differential pressure pickup, A/D converter, microprocessor are the conventional components in the control system), again according to Poiseuille law (P=KQ η), and according to Q(volume flow rate in two kapillaries) identical, can push away to get 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, as shown in Figure 2.
Microprocessor calculates relative viscosity according to formula.The derivation of equation is as follows:
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 is filled with product 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 for determining that flexible partition 25 moves to the position at two ends.
The effect of gasbag-type air driven pump 6 is that solvent is sent 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 inflation, liquid in the liquid storage cylinder 28 is extruded, liquid can be back in the liquid storage cylinder 28 when venting), it can realize that fluid flows mutually between gasbag-type air driven pump 6 and liquid-liquid isolator 13, can make like this solvent Reusability provide assurance for realizing on-line automatic measurement, can also save solvent, see Fig. 4.
The effect of elastic bag formula air driven pump is that the solvent in the sample in the sample bottle 15 or the solvent bottle 22 is sent in liquid-liquid isolator 13 (is original creation parts of the present invention, when to elastic bag 32 inflation, the liquid of liquid storage cylinder 28 is pumped out, when elastic bag 32 elastic shrinkage, suck liquid from the outside, liquid flows to by retaining valve 20 to be determined), this provides assurance for automatically getting liquid, 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 to control direction of flow under the control system effect, reversing solenoid valve 2 is control pneumatic system 1 and the corresponding action of operated pneumatic valve 8 dos under control system 5 effects, to finish automatically controls such as getting the liquid measurement, this is conventional for 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: the control system 5 corresponding solenoid valves of control (B, D) are connected, pneumatic system 1 is inflated 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, and gas is discharged.
(2) emptying liquid-liquid isolator 13 right chambeies: process is: the control system 5 corresponding solenoid valves of control (A) are connected, pneumatic system 1 is inflated in gasbag-type air driven pump 6, solvent in the gasbag-type air driven pump 6 is pressed into the left chamber of liquid-liquid isolator 13, and (it is emptying liquid-right chamber of liquid isolator to make flexible partition move to right-hand member, whether flexible partition moves to right-hand member is detected by Hall element), simultaneously corresponding solenoid valve (J, Q) is connected, and makes the fluid circulation.
(3) inject solvent to liquid-liquid isolator 13: process is: the control system 5 corresponding solenoid valves of control (C, D) are connected, pneumatic system 1 is to elastic bag formula air driven pump II 21 and operated pneumatic valve 8 inflations, simultaneously corresponding solenoid valve (J, k) is connected, make the fluid circulation, solvent enters liquid-liquid isolator 13 right chambeies (simultaneously in the squeezed go back to gasbag-type air driven pump of solvent in liquid-left chamber of liquid isolator) in the solvent bottle 22 under 21 effects of elastic bag formula air driven pump II.
(4) measure geometry constant K: process is: the control system 5 corresponding solenoid valves of control (A) are connected, pneumatic system 1 is inflated in gasbag-type air driven pump 6, solvent in the gasbag-type air driven pump 6 enters liquid-liquid isolator 13 left chambeies by capillary I 12 under gas pressure, solvent in liquid-liquid isolator 13 right chambeies is extruded away simultaneously, flows into kapillary II 14 and finishes measurement K.
(5) inject sample to liquid-liquid isolator 13: process is: the control system 5 corresponding solenoid valves of control (B, C) are connected, pneumatic system 1 is to elastic bag formula air driven pump I 16 and operated pneumatic valve 8 inflations, simultaneously corresponding solenoid valve (J, k) is connected, make the fluid circulation, 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, finish sampling (simultaneously in the squeezed time gasbag-type air driven pump of solvent in liquid-left chamber of liquid isolator).
(6) measure sample: process is: the control system 5 corresponding solenoid valves of control (A) are connected, pneumatic system 1 is inflated in gasbag-type air driven pump 6, solvent in the gasbag-type air driven pump 6 enters liquid-liquid isolator 13 left chambeies by capillary I 12 under gas pressure, sample in liquid-liquid isolator 13 right chambeies is extruded away simultaneously, flows into kapillary II 14 and finishes the measurement sample.
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 pipeline and are connected with the kapillary II, the other end of kapillary I is connected with the gasbag-type air driven pump; Be provided with branch road at liquid-liquid isolator with the pipeline that the kapillary II is connected, sample bottle is connected with solvent bottle with the branch road pipeline and is connected;
The two ends of described kapillary I, kapillary II are respectively equipped with a differential pressure pickup, and differential pressure pickup is connected with the control system circuit by amplifying circuit;
Pipeline between described branch road and the kapillary II is provided with operated pneumatic valve;
Pipeline between described kapillary I and liquid-liquid isolator is provided with switch electromagnetic valve;
Pipeline between described kapillary II and the pneumatic valve is provided with switch electromagnetic valve;
The Hall element at described liquid-liquid isolator two ends is connected with the control system circuit;
Described branch road is provided with switch electromagnetic valve;
The pipeline that described 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 described 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;
Described gasbag-type air driven pump, elastic bag formula air driven pump all are connected with pneumatic system by reversing solenoid valve;
Described switch electromagnetic valve and reversing solenoid valve all are connected with the control system circuit by driving circuit.
2. the isolated capillary viscosimeter of a kind of liquid-liquid according to claim 1, it is characterized in that: described liquid-liquid isolator comprises housing, and the housing both sides respectively are provided with a Hall element, 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: described 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 discharge entrance.
4. the isolated capillary viscosimeter of a kind of liquid-liquid according to claim 1, it is characterized in that: described 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 discharge entrance.
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: described housing is made of the two parts that are bolted.
6. the isolated capillary viscosimeter of a kind of liquid-liquid according to claim 1, it is characterized in that: also be provided with liquid injection port on the described 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 described 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210214300 CN102721630B (en) | 2012-06-27 | 2012-06-27 | Liquid-liquid isolation-type capillary viscometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210214300 CN102721630B (en) | 2012-06-27 | 2012-06-27 | Liquid-liquid isolation-type capillary viscometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102721630A CN102721630A (en) | 2012-10-10 |
| CN102721630B true CN102721630B (en) | 2013-10-30 |
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ID=46947454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210214300 Expired - Fee Related CN102721630B (en) | 2012-06-27 | 2012-06-27 | Liquid-liquid isolation-type capillary viscometer |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1254867A (en) * | 1967-10-05 | 1971-11-24 | 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 |
| US5597949A (en) * | 1995-09-07 | 1997-01-28 | Micro Motion, Inc. | Viscosimeter calibration system and method of operating the same |
| US20040099060A1 (en) * | 2002-11-23 | 2004-05-27 | Johan Kijlstra | Device and method for characterizing a capillary system |
| CN1959372B (en) * | 2006-11-28 | 2011-01-05 | 中北大学 | Rheological behavior measuring 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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| Publication number | Publication date |
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| CN102721630A (en) | 2012-10-10 |
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