CN202676569U - Fully-automatic multi-capillary-tube viscometer - Google Patents
Fully-automatic multi-capillary-tube viscometer Download PDFInfo
- Publication number
- CN202676569U CN202676569U CN 201220364225 CN201220364225U CN202676569U CN 202676569 U CN202676569 U CN 202676569U CN 201220364225 CN201220364225 CN 201220364225 CN 201220364225 U CN201220364225 U CN 201220364225U CN 202676569 U CN202676569 U CN 202676569U
- Authority
- CN
- China
- Prior art keywords
- elastic bag
- pipeline
- driven pump
- bottle
- air driven
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a fully-automatic multi-capillary-tube viscometer which comprises a control system, a pneumatic system, a reference liquid public injection loop, a reference liquid detection loop and at least one sample detection loop. According to the fully-automatic multi-capillary-tube viscometer, a plurality of capillary tubes are connected together in parallel, both ends of each capillary tube are subjected to the same pressure at any time and simultaneously measured, so that the difficult problems of no guarantee of the same measurement condition each time, low precision, great influence by temperature, complicated operation steps in the prior art are solved, and automatic on-line measurement can be realized.
Description
Technical field
The utility model relates to a kind of full-automatic multitube capillary viscosimeter.
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, such as quality restriction of various petroleum products and paint etc., all need to carry out viscosity measurement, the viscosity of measuring blood and biofluid in medical science has very important clinical meaning.The automatic control of production run of some food and medicine etc. also will realize by monitoring viscosity, can also by the viscosity of monitoring synthetic reaction product, automatically control reaction end.Viscosity measurement commonly used has capillary viscosimeter (such as Ostwald viscosimeter), measures viscosity with capillary viscosimeter, and general the employing is to measure delivery time method (measuring respectively the delivery time of solvent and sample).When measuring viscosity in this way, start and end time is not easy accurate judgement, and each condition of measuring is difficult to guarantee identical, so ratio of precision is lower, temperature influence is large, complex operation step, be difficult to realize robotization, use duration, kapillary cleans also very numb numerous etc.
The utility model content
For above-mentioned prior art, the utility model provides a kind of full-automatic multitube capillary viscosimeter, the utility model adopts solution-air isolator (this is to guarantee the identical key of pressure) a plurality of capillary parallelings together, make each any moment of two ends capillaceous be subject to the effect of uniform pressure, and be the scheme of measuring simultaneously, this scheme has solved well and can not guarantee in the prior art that each condition of measuring is identical, the difficult problems such as precision is low, temperature influence is large, complex operation step, and can realize automatic on-line measurement.
The utility model is achieved through the following technical solutions:
A kind of full-automatic multitube capillary viscosimeter comprises that control system, pneumatic system, the public infusion circuit of reference liquid, reference liquid detect loop and at least one sample detection loop, wherein,
The structure that reference liquid injects common return is: comprise elastic bag formula air driven pump and reference liquid bottle I, the fluid inlet end of elastic bag formula air driven pump is connected with reference liquid bottle I pipeline;
The structure that described reference liquid detects the loop is: comprise reference liquid bottle II, solution-air isolator, kapillary, the bottle of weighing, weighing device, waste liquid bottle and two elastic bag formula air driven pumps: elastic bag formula air driven pump I, elastic bag formula air driven pump II, wherein, the fluid inlet end of elastic bag formula air driven pump I is connected with reference liquid bottle II pipeline, the liquid outlet end of elastic bag formula air driven pump I is connected with the fluid inlet end pipeline of solution-air isolator, the liquid outlet end of solution-air isolator is connected with the kapillary pipeline, and kapillary is connected with bottle pipeline of weighing; The fluid inlet end of elastic bag formula air driven pump II is connected with bottle pipeline of weighing, and the liquid outlet end of elastic bag formula air driven pump II is connected with the waste liquid bottle pipeline; The bottle of weighing is positioned on the weighing device;
The structure in described sample detection loop is: comprise sample bottle, solution-air isolator, kapillary, the bottle of weighing, weighing device, waste liquid bottle and two elastic bag formula air driven pumps: elastic bag formula air driven pump I, elastic bag formula air driven pump II, wherein, the fluid inlet end of elastic bag formula air driven pump I is connected with the sample bottle pipeline, the liquid outlet end of elastic bag formula air driven pump I is connected with the fluid inlet end pipeline of solution-air isolator, the liquid outlet end of solution-air isolator is connected with the kapillary pipeline, and kapillary is connected with bottle pipeline of weighing; The fluid inlet end of elastic bag formula air driven pump II is connected with bottle pipeline of weighing, and the liquid outlet end of elastic bag formula air driven pump II is connected with the waste liquid bottle pipeline; The bottle of weighing is positioned on the weighing device;
Be equipped with valve on described elastic bag formula air driven pump and the pipeline that reference liquid bottle I is connected, on elastic bag formula air driven pump I and the pipeline that reference liquid bottle II is connected, on elastic bag formula air driven pump I and the pipeline that sample bottle is connected and on solution-air isolator and the pipeline that kapillary is connected;
Described pneumatic system is provided with two output terminal: A output roads and B output road;
The gas port end that charges and discharge of described elastic bag formula air driven pump is connected with the B output road pipeline of pneumatic system by reversing solenoid valve;
The gas port that charges and discharge of described solution-air isolator is connected with the A output road pipeline of pneumatic system by reversing solenoid valve;
The liquid outlet end of the elastic bag formula air driven pump of the public infusion circuit of described reference liquid is connected with the fluid inlet end pipeline of the solution-air isolator on every galley proof product examine survey time road respectively;
Described pneumatic system, reversing solenoid valve, weighing device are connected with the control system circuit respectively.
The pneumatic pump structure of described elastic bag formula is: comprise housing, form a cavity---liquid storage cylinder in the housing, be provided with elastic bag in the liquid storage cylinder, the housing upper end is provided with and charges and discharge gas port, charging and discharging gas port is communicated with elastic bag, the lower end of housing is provided with liquid outlet and liquid inlet, and liquid outlet and liquid inlet are communicated with liquid storage cylinder.
The structure of described solution-air isolator is: comprise housing, be provided with flexible partition in the housing, thereby enclosure interior is divided into two parts: the flexible partition top is inflatable chamber, and the below is liquid storage cylinder; The housing upper end is provided with and charges and discharge gas port, charges and discharge gas port and is communicated with inflatable chamber, and the housing lower end is provided with liquid outlet and liquid inlet, and liquid outlet and liquid inlet are communicated with liquid storage cylinder.
Preferably, described valve is the gasbag-type operated pneumatic valve, and the structure of gasbag-type operated pneumatic valve is: comprise valve body, form a cavity in the valve body, the cavity both sides are fluid passage, are provided with elastic bag in the cavity, and elastic bag is provided with and charges and discharge gas port; Elastic bag is connected with the B output road pipeline of pneumatic system by reversing solenoid valve.
Further, described elastic bag formula air driven pump I is provided with the pipeline loop with the pipeline that reference liquid bottle II is connected, the end in pipeline loop is communicated with the bottle of weighing, pipeline and junction, pipeline loop are provided with hand-operated direction valve, purpose is: when the needs on-line measurement, by hand-operated direction valve elastic bag formula air driven pump I is converted to from the bottle of weighing gets reference liquid, can recycle reference liquid like this.
Further, on described elastic bag formula air driven pump I and the pipeline that the solution-air isolator is connected, on elastic bag formula air driven pump II and the pipeline that the bottle of weighing is connected, be equipped with retaining valve on elastic bag formula air driven pump II and the pipeline that waste liquid bottle is connected and on the elastic bag formula air driven pump of the public infusion circuit of reference liquid and the pipeline that the solution-air isolator on every galley proof product examine survey time road is connected.
Further, the elastic bag formula air driven pump of the public infusion circuit of described reference liquid is provided with liquid injection port and manually-operated gate with the pipeline that the solution-air isolator on every galley proof product examine survey time road is connected, can be by the manually fluid injection in the liquid injection port of manual impregnator during use.
Further, for guaranteeing not to be subjected in the measuring process interference of temperature variation, reference liquid bottle, sample bottle, elastic bag formula air driven pump, solution-air isolator, gasbag-type operated pneumatic valve, kapillary etc. all can be put into calibration cell.
Described sample detection loop can arrange many as required, 2,3,4,5 ... all can.
Preferably, the housing of described elastic bag formula air driven pump and solution-air isolator all is to be made of the up and down two parts that are bolted.
Described control system, pneumatic system, weighing device, calibration cell all are conventional equipments of the prior art, are routine techniques, are easily to realize for one of ordinary skill in the art, and the utility model, repeats no more without improvements this.
In addition, the weighing device that reference liquid detects in loop/sample detection loop can share, that is: need not every reference liquid detection loop/sample detection loop and all independently prepare a cover weighing device, many or all reference liquids detect loop/sample detection loops and can share a cover weighing device, method is to share the weighing device timesharing to carry out, and this is easily to realize for one of ordinary skill in the art.
Principle of work: each end capillaceous is linked (same pneumatic supply on the same source of the gas by the solution-air isolator, pressure is adjustable and stable), the other end is in the identical atmospheric environment, the pressure that so just can guarantee each kapillary two ends is identical, when flow is crossed each kapillary, all be subject to identical pressure-acting constantly.By detecting the volume (V that in same time (t), flows through reference liquid capillaceous and sample
0And V
n) ratio, the formula ［ η r=K (V of the Fluid Computation viscosity of deriving according to Poiseuille law (P-=KQ η) again
0/ V
n), calculate relative viscosity by microprocessor.
The derivation of equation is as follows:
P=K
0Q
0η
0(reference liquid kapillary)
P=K
nQ
nη
n(sample kapillary)
K
0=8L
0/ЛR
0 4
K
n=8L
n/ЛR
n 4
P: the pressure at kapillary two ends; (P=P
2-P
1P
2Bleed pressure; P
1: atmospheric pressure) Q
0: the volumetric flow rate of reference liquid; Q
n: the volumetric flow rate of sample; η
0:: the viscosity of reference liquid; η
n: the viscosity of sample; K
0: reference liquid geometric constant capillaceous; K
n: sample geometric constant capillaceous (L: length capillaceous; R: radius capillaceous).
Equated by pressure: K
nQ
nη
n=K
0Q
0η
0
η
n/η
0=K
0Q
0∕K
nQ
n=K
0Q
0t∕K
nQ
nt=K
0V
0∕K
nV
n
Obtain formula: η
r=K (V
0/ V
n)
K:(K=K
0/ K
n) the viscosity apparatus constant; η
r: (η
r=η
n/ η
0) relative viscosity; V
0: the volume of reference liquid; V
n: the volume of sample.
Fluid volume ratio (V
0/ V
n) measurement indirectly obtain (this also is an innovative point of the present utility model) by weighing device, method is: decide first a subscript before each the measurement, with precise micro aspirator (special Special precision measurer, such as micro syringe) reference liquid and the sample that measure respectively equal volume weigh, then take reference liquid as a standard unit, sample is calibrated, and being decided to be equally a unit (like this can cancellation constant m
n/ m
o), so just realized the volume ratio (V with weighing device (weighing and sensing can reach very high precision) measurement fluid
0/ V
n), need not carry out density measure again (for one of ordinary skill in the art, being easy to realize).
According to being: V
0/ V
n=(W
0/ W
n) (m
n/ m
o).(m
n/ m
o) be constant (quality is a constant)
Formula identity is as follows:
ρ
0=m
0/ V
0ρ
n=m
n/ V
nOrder: V
n=V
0
ρ
0/ρ
n=(m
0/V
0)/(m
n/V
n)=m
o/m
n?ρ
0=ρ
n(m
o/m
n)
V
0/V
n=(m
0/ρ
0)/(m
n/ρ
n)=(m
0g/ρ
0)/(m
ng/ρ
n)=W
0/[ρ
n(m
o/m
n)]/W
nρ
n=(W
0/W
n)(m
n/m
o)
Obtain formula: V
0/ V
n=(W
0/ W
n) (m
n/ m
o)
ρ
n: sample rate; ρ
0: the density of solvent; W
n: example weight; W
o: weight of solvent; V
n: sample volume; V
0: solvent volume; m
n: sample quality m
o:; Solvent quality; G: acceleration of gravity.
The course of work of full-automatic multitube capillary viscosimeter of the present utility model is as follows:
(1) liquid storage cylinder in emptying gasbag-type air driven pump (comprising elastic bag formula air driven pump I, elastic bag formula air driven pump II and elastic bag formula air driven pump) and the solution-air isolator, for imbibition is prepared: process is: the circuit that control system control is relevant is connected, pneumatic system is by corresponding reversing solenoid valve, elastic bag in whole elastic bag formula air driven pumps is inflated with the inflatable chamber in whole solution-air isolators, the gas in the liquid storage cylinder is discharged (by gasbag-type operated pneumatic valve and an individual kapillary).
(2) suck reference liquid: process is: the circuit that control system control is relevant disconnects, elastic bag in the elastic bag formula air driven pump I in the elastic bag formula air driven pump of the public infusion circuit of reference liquid and reference liquid detection loop shrinks venting by corresponding reversing solenoid valve and (annotates: inflation when reversing solenoid valve is switched on, exit during outage), liquid storage cylinder sucks reference liquid (drawing) from reference liquid bottle I and reference liquid bottle II simultaneously.
(3) inject reference liquid to the solution-air isolator: process is: the circuit that control system control is relevant is connected, interlock circuit disconnects (making the inflatable chamber of solution-air isolator by corresponding solenoid valve venting) simultaneously, pneumatic system detects the elastic bag inflation in the elastic bag formula air driven pump I in loop to the elastic bag formula air driven pump of the public infusion circuit of reference liquid and reference liquid by corresponding reversing solenoid valve, reference liquid in the elastic bag formula air driven pump is injected the solution-air isolator in three sample detection loops, reference liquid in the elastic bag formula air driven pump I in reference liquid detection loop is injected the solution-air isolator that reference liquid detects the loop, simultaneously, the gasbag-type operated pneumatic valve is closed.
(4) measure viscometer constant K value: (measurement of K is only just carried out when renewing kapillary) process is: the circuit that control system control is relevant is connected, simultaneously corresponding circuit disconnects and makes the gasbag-type operated pneumatic valve open-minded, pneumatic system is by corresponding reversing solenoid valve, inflate to the solution-air isolator, reference liquid flows in the corresponding kapillary under gas pressure, thereafter flow in the bottle of weighing, by weighing device it is weighed, its signal send control system to process after amplifier amplifies, and finishes and measures K(K
1n, K
2n, k
3n).
(5) the emptying bottle of weighing: process is: the circuit that control system control is relevant disconnects, elastic bag in the corresponding elastic bag formula air driven pump II shrinks venting by reversing solenoid valve, the simultaneously corresponding liquid storage cylinder inspiration reference liquid (emptying less demanding, remaining click-through is crossed zero clearing and just solved) in the bottle of weighing.
(6) liquid is discharged in the waste liquid bottle: process is: the circuit that control system control is relevant is connected, and pneumatic system is by corresponding reversing solenoid valve, and the elastic bag in the elastic bag formula air driven pump II of correspondence is inflated, and reference liquid is extruded in the waste liquid bottle.
(7) suck sample and reference liquid: process is: the circuit that control system control is relevant disconnects, and the elastic bag in the elastic bag formula air driven pump I shrinks venting by corresponding reversing solenoid valve, and liquid storage cylinder sucks sample/reference liquid simultaneously.
(8) inject sample and reference liquid to the solution-air isolation: process is: the circuit that control system control is relevant is connected, simultaneously corresponding circuit disconnects, pneumatic system is inflated to the elastic bag in the elastic bag formula air driven pump I by corresponding reversing solenoid valve, sample in the liquid storage cylinder of elastic bag formula air driven pump I/reference liquid is injected the solution-air isolator, and the gasbag-type operated pneumatic valve is closed simultaneously.
(9) measure sample: process is: the circuit that control system control is relevant is connected, simultaneously corresponding circuit disconnects and makes the gasbag-type operated pneumatic valve open-minded, pneumatic system is by corresponding reversing solenoid valve, inflate to the solution-air isolator, reference liquid/sample flows under gas pressure in the kapillary, flows in the bottle of weighing thereafter, by weighing device it is weighed, its signal send control system to process after amplifier amplifies, and finishes sample measurement.Measure complete after, reference liquid and sample can be discharged in the waste liquid bottle by above-mentioned steps (5) (6).
Full-automatic multitube capillary viscosimeter of the present utility model, effect and the characteristics of its main element are as follows:
The effect of solution-air isolator is: after liquid storage cylinder is filled with liquid, Pneumatic pipe cleaner is crossed the non-resistance transfer function of flexible partition to liquid, make it to flow into (the solution-air isolator is original creation parts of the present utility model) in the kapillary, it has guaranteed that namely each kapillary is subject to the same pressure effect, gas-liquid is isolated mutually, and the liquid in each kapillary can not mix mutually simultaneously.Because simple and compact for structure, again by gas-operated, so can directly be connected by the gasbag-type operated pneumatic valve (make connecting line very short) with kapillary, can eliminate like this impact of pipeline, corrosion-resistant, because cost is very low, can disposablely use, when changing sample, can save cleaning.
The effect of elastic bag formula air driven pump is: the reference liquid in the sample in the sample bottle or the reference liquid bottle is sent in the solution-air isolator; Another effect is the liquid in the bottle of weighing to be extracted out send into (elastic bag formula air driven pump is original creation parts of the present utility model) in the waste liquid bottle, 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 gasbag-type operated pneumatic valve and retaining valve to be determined, this provides assurance for automatically getting liquid.Because simple and compact for structure, again by gas-operated, easily in the connection of pipeline, can disposablely use, save the cleaning to pump, corrosion-resistant, the volumetric ratio solution-air isolator of elastic bag formula air driven pump is much larger, can fully guarantee to the fluid injection of solution-air isolator, because there not being problem stuck as mechanical pump, therefore the sensor of judging the topping up situation need not be set (because gas has the fast characteristics of transmission speed as long as very short time just can be finished fluid injection) again.
The effect of gasbag-type operated pneumatic valve is: control fluid break-make (the gasbag-type operated pneumatic valve is original creation parts of the present utility model) under the control system effect, characteristics are opening and closing reliable, the resistance of convection cell can be ignored, aim at the design of this viscosity meter, be particularly suitable in low pressure line, using, compare with the valve of physical construction, structure very simple (can be connected with pipe one pipeline is connected simple and convenient), size is little, corrosion-resistant, cost is very low, can disposablely use, and can remove cleaning from.
The effect of reversing solenoid valve is: control pneumatic system and elastic bag formula air driven pump and gasbag-type operated pneumatic valve are done corresponding action 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, easily realizes.
Pneumatic system is divided the output of A, B two-way, and the A road provides air pressure to the solution-air isolator, and pressure adopts PID control, and air pressure can regulate, to adapt to the needs of measuring different fluid.B road air pressure is given elastic bag formula air driven pump and gasbag-type operated pneumatic valve air feed greater than the A road.
Full-automatic multitube capillary viscosimeter of the present utility model, compare with traditional capillary viscosimeter, owing to adopting unique solution-air isolator, a plurality of capillary parallelings together, make each any moment of two ends capillaceous be subject to the effect of uniform pressure, (when pressure changes, because variable quantity is identical, so variable quantity is at V
OWith V
NRatio in be eliminated, can eliminate like this impact of the fluctuation of pressure, so that measuring accuracy is greatly improved.Because relative viscosity (η r) only depends on the ratio of volume, volume ratio (V
o/ V
n) detection finish by LOAD CELLS, because existing LOAD CELLS has very high sensitivity and stability (precision such as electronic balance can reach 0.001mg), therefore, measure the very high (subtle change of the flow that is caused by the subtle change of viscosity of sensitivity, can both be out measured by LOAD CELLS), and stability is very high.
Because the viscosity of solvent and sample liquids is synchro measure under identical temperature environment, measurement be again relative viscosity (other viscosity can be calculated according to it), in this instrument, the relative viscosity value only depends on the ratio (V of volume
o/ V
n), when measuring V
oWith V
nRatio the time, identical variable quantity has been cancelled in comparing, so the disturbance of temperature slackened greatly, so temperature influence little (this is very important to high-precision instrument) requires also low to the control of the temperature of calibration cell.
Owing to measuring on year-on-year basis by long-pending body and adopting high-precision weight sensor, realized the very high-precision measurement to viscosity in a word.
Be indirect measurement because of what adopt, the weighing apparatus sensing does not link to each other with pipe system, disturbs so can not produce pipeline, and this has further improved precision, is convenient to simultaneously expansion.
Can automatically carry out simultaneously the measurement of a plurality of samples (and can expand at any time, increase the sample detection loop, can expand adding with the form of enlargement module, need not increase weighing device, method is to share the weighing device timesharing to carry out, and this is easily to realize for one of ordinary skill in the art).And measuring speed is fast, and very time saving and energy saving (having suffered as long as sample is put into sample bottle) therefore improved efficient greatly.Can carry out on-line automatic measurement, as long as sample bottle is changed into the fluid supply of on-line measurement, just can easily realize on-line automatic measurement, this is conducive to realize the automatic control of production run.
Because the gas transmission is Flexible Transmission, so that being connected and settling all very flexibly of kapillary and pipeline can make like this and change very simple and convenient that kapillary becomes, when the replacing sample, just can measure as long as change a new kapillary horse back.Because the capillary pipe structure very simple (being exactly a thin straight tube) that uses is easy to clean, also can disposablely use.
Be that pneumatic drive adds unique pneumatic element (capsule formula air driven pump, solution-air isolator, gasbag-type operated pneumatic valve three organic assembling) because of what adopt, institute is so that the automatic very simple compactness of the structure of part.
When accuracy requirement is not high, can make reference without the reference solvent, directly come the viscosity of test sample product by measurement volumes, (η
n=kPt/V; V=W/ ρ; ρ can obtain by tabling look-up, also can be by measuring, and pressure P is to adopt PID control, precision can meet the demands).
The pressure of pressure source A can be regulated and can adapt to the needs of measuring different fluid.
In addition, the utility model is simple to operate in addition, and is easy to use, and few the maintenance manufactured easily low cost and other advantages.
Description of drawings
Fig. 1 is the structural representation of full-automatic multitube capillary viscosimeter of the present utility model.
Fig. 2 is measuring principle schematic diagram of the present utility model.
Fig. 3 is the structural representation of solution-air isolator of the present utility model.
Fig. 4 is the structural representation of elastic bag formula air driven pump of the present utility model.
Fig. 5 is the structural representation of gasbag-type operated pneumatic valve of the present utility model.
Fig. 6 is the configuring condition schematic diagram in the calibration cell of the present utility model.
Wherein, 1, pneumatic system; 2, control system; 3, elastic bag formula air driven pump I; 4, elastic bag formula air driven pump II; 5, reversing solenoid valve; 6, elastic bag formula air driven pump; 7, solution-air isolator; 8, retaining valve; 9, gasbag-type operated pneumatic valve; 10, reference liquid bottle I; 11, hand-operated direction valve; 12, kapillary; 13, sample bottle; 14, the bottle of weighing; 15, waste liquid bottle; 16, pan of a steelyard; 17, LOAD CELLS; 18, amplifier; 19, liquid injection port; 20, manual impregnator; 21, manually-operated gate; 22, reference liquid bottle II; 23, charge and discharge gas port; 24, housing; 25, inflatable chamber; 26, flexible partition; 27, liquid storage cylinder; 28, liquid inlet; 29, liquid outlet; 30, elastic bag; 31, calibration cell.A represents A output road; B represents B output road; Lowercase a, b, c, d ... q, m, x, y, z indication circuit connect, as: two a of place are arranged among the figure, represent that then this two places circuit connects.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
A kind of full-automatic multitube capillary viscosimeter as shown in Figure 1, comprises that control system 2, pneumatic system 1, the public infusion circuit of reference liquid, reference liquid detect loop and three galley proof product examine survey time roads, wherein,
The structure of the public infusion circuit of reference liquid is: comprise elastic bag formula air driven pump 6 and reference liquid bottle I 10, the fluid inlet end of elastic bag formula air driven pump 6 is connected with reference liquid bottle I 10 pipelines;
The structure that described reference liquid detects the loop is: comprise reference liquid bottle II 22, solution-air isolator 7, kapillary 12, weigh the bottle 14, weighing device (comprises the scale pan 16, LOAD CELLS 17 and amplifier 18, be conventional structure of the prior art), waste liquid bottle 15 and two elastic bag formula air driven pumps: elastic bag formula air driven pump I 3, elastic bag formula air driven pump II 4, wherein, the fluid inlet end of elastic bag formula air driven pump I 3 is connected with reference liquid bottle II 22 pipelines, the liquid outlet end of elastic bag formula air driven pump I 3 is connected with the fluid inlet end pipeline of solution-air isolator 7, the liquid outlet end of solution-air isolator 7 is connected with kapillary 12 pipelines, and kapillary 12 is connected with bottle 14 pipelines of weighing; The fluid inlet end of elastic bag formula air driven pump II 4 is connected with bottle 14 pipelines of weighing, and the liquid outlet end of elastic bag formula air driven pump II 4 is connected with waste liquid bottle 15 pipelines; The bottle 14 of weighing is positioned on the weighing device;
The structure in described sample detection loop is: comprise sample bottle 13, solution-air isolator 7, kapillary 12, weigh the bottle 14, weighing device, waste liquid bottle 15 and two elastic bag formula air driven pumps: elastic bag formula air driven pump I 3, elastic bag formula air driven pump II 4, wherein, the fluid inlet end of elastic bag formula air driven pump I 3 is connected with sample bottle 13 pipelines, the liquid outlet end of elastic bag formula air driven pump I 3 is connected with the fluid inlet end pipeline of solution-air isolator 7, the liquid outlet end of solution-air isolator 7 is connected with kapillary 12 pipelines, and kapillary 12 is connected with bottle 14 pipelines of weighing; The fluid inlet end of elastic bag formula air driven pump II 4 is connected with bottle 14 pipelines of weighing, and the liquid outlet end of elastic bag formula air driven pump II 4 is connected with waste liquid bottle 15 pipelines; The bottle 14 of weighing is positioned on the weighing device;
Be equipped with gasbag-type operated pneumatic valve 9 on described elastic bag formula air driven pump 6 and the pipeline that reference liquid bottle I 10 is connected, on elastic bag formula air driven pump I 3 and the pipeline that reference liquid bottle II 22 is connected, on elastic bag formula air driven pump I 3 and the pipeline that sample bottle 13 is connected and on solution-air isolator 7 and the pipeline that kapillary 12 is connected;
Described pneumatic system 1 is provided with two output terminal: A output roads and B output road;
The gas port end that charges and discharge of described elastic bag formula air driven pump 6, elastic bag formula air driven pump I 3, elastic bag formula air driven pump II 4 is connected with the B output road pipeline of pneumatic system 1 by reversing solenoid valve 5;
The gas port that charges and discharge of described solution-air isolator 7 is connected with the A output road pipeline of pneumatic system 1 by reversing solenoid valve 5;
The liquid outlet end of the elastic bag formula air driven pump 6 of the public infusion circuit of described reference liquid is connected with the fluid inlet end pipeline of the solution-air isolator 7 on every galley proof product examine survey time road respectively;
Described pneumatic system 1, reversing solenoid valve 5, weighing device are connected with control system 2 circuit respectively.
Described elastic bag formula air driven pump 6(elastic bag formula air driven pump I 3, elastic bag formula air driven pump II 4 are with elastic bag formula air driven pump 6) structure be: comprise housing 24, cavity of housing 24 interior formation---liquid storage cylinder 27, be provided with elastic bag 30 in the liquid storage cylinder 27, housing 24 upper ends are provided with and charge and discharge gas port 23, charging and discharging gas port 23 is communicated with elastic bag 30, the lower end of housing 24 is provided with liquid outlet 29 and liquid inlet 28, liquid outlet 29 and liquid inlet 28 are communicated with liquid storage cylinder 27, as shown in Figure 4.
The structure of described solution-air isolator is: comprise housing 24, be provided with flexible partition 26 in the housing 24, thereby housing 24 inside are divided into two parts: flexible partition 26 tops are inflatable chamber 25, and the below is liquid storage cylinder 27; Housing 24 upper ends are provided with and charge and discharge gas port 23, charge and discharge gas port 23 and are communicated with inflatable chamber 25, and housing 24 lower ends are provided with liquid outlet 29 and liquid inlet 28, and liquid outlet 29 and liquid inlet 28 are communicated with liquid storage cylinder 27, as shown in Figure 3.
The structure of described gasbag-type operated pneumatic valve 9 is: comprise valve body, form a cavity in the valve body, the cavity both sides are fluid passage, are provided with elastic bag 30 in the cavity, and elastic bag 30 is provided with and charges and discharge gas port 23; Elastic bag 30 is connected with the B output road pipeline of pneumatic system 1 by reversing solenoid valve 5, as shown in Figure 5.
The pipeline that described elastic bag formula air driven pump I 3 is connected with reference liquid bottle II 22 is provided with the pipeline loop, the end in pipeline loop is communicated with the bottle 14 of weighing, pipeline and junction, pipeline loop are provided with hand-operated direction valve 11, purpose is: when the needs on-line measurement, by hand-operated direction valve 11 elastic bag formula air driven pump I 3 is converted to from the bottle 14 of weighing gets reference liquid, can save reference liquid like this.
Be equipped with retaining valve 8 on described elastic bag formula air driven pump I 3 and the pipeline that solution-air isolator 7 is connected, on elastic bag formula air driven pump II 4 and bottle 14 pipelines that are connected of weighing, on elastic bag formula air driven pump II 4 and the pipeline that waste liquid bottle 15 is connected and on the elastic bag formula air driven pump 6 of the public infusion circuit of reference liquid and the pipeline that the solution-air isolator 7 on every galley proof product examine survey time road is connected.
The elastic bag formula air driven pump 6 of the public infusion circuit of described reference liquid is provided with liquid injection port 19 and manually-operated gate 21 with the pipeline that the solution-air isolator 7 on every galley proof product examine survey time road is connected, can be by the manually fluid injection in the liquid injection port 19 of manual impregnator 20 during use.
Described elastic bag formula air driven pump 6(elastic bag formula air driven pump I 3, elastic bag formula air driven pump II 4 are with elastic bag formula air driven pump 6) and the housing of solution-air isolator 7 all be to be consisted of by the up and down two parts that are bolted.
Principle of work a: end of each kapillary 12 is linked (same pneumatic supply on the same source of the gas by solution-air isolator 7, pressure is adjustable and stable), the other end is in the identical atmospheric environment, the pressure that so just can guarantee each kapillary 12 two ends is identical, when flow is crossed each kapillary 12, all be subject to identical pressure-acting constantly.In same time (t), flow through the reference liquid of kapillary 12 and the volume (V of sample by detecting
0And V
n) ratio, the formula ［ η r=K (V of the Fluid Computation viscosity of deriving according to Poiseuille law (P=KQ η) again
0/ V
n), calculate relative viscosity by microprocessor (parts of control system 2).
The derivation of equation is as follows:
P=K
0Q
0η
0(reference liquid kapillary)
P=K
nQ
nη
n(sample kapillary)
K
0=8L
0/ЛR
0 4
K
n=8L
n/ЛR
n 4
P: the pressure at kapillary two ends; (P=P
2-P
1P
2Bleed pressure; P
1: atmospheric pressure) Q
0: the volumetric flow rate of reference liquid; Q
n: the volumetric flow rate of sample; η
0:: the viscosity of reference liquid; η
n: the viscosity of sample; K
0: reference liquid geometric constant capillaceous; K
n: sample geometric constant capillaceous (L: length capillaceous; R: radius capillaceous).
Equated by pressure: K
nQ
nη
n=K
0Q
0η
0
η
n/η
0=K
0Q
0∕K
nQ
n=K
0Q
0t∕K
nQ
nt=K
0V
0∕K
nV
n
Obtain formula: η
r=K (V
0/ V
n)
K:(K=K
0/ K
n) the viscosity apparatus constant; η
r: (η
r=η
n/ η
0) relative viscosity; V
0: the volume of reference liquid; V
n: the volume of sample, as shown in Figure 2, among the figure, the kapillary 12 of high order end is the kapillary on the reference liquid detection loop, all the other are the kapillary on the sample detection loop.
Fluid volume ratio (V
0/ V
n) measurement indirectly obtain (this also is an innovative point of the present utility model) by weighing device, method is: decide first a subscript before each the measurement, with precise micro aspirator (special Special precision measurer, such as micro syringe) reference liquid and the sample that measure respectively equal volume weigh, then take reference liquid as a standard unit, sample is calibrated, and being decided to be equally a unit (like this can cancellation constant m
o/ m
n), so just realized the volume ratio (V with weighing device (weighing and sensing can reach very high precision) measurement fluid
0/ V
n), need not carry out density measure again (for one of ordinary skill in the art, being easy to realize).
According to being: V
0/ V
n=(W
0/ W
n) (m
n/ m
o).(m
n/ m
o) be constant (quality is a constant)
Formula identity is as follows:
ρ
0=m
0/ V
0ρ
n=m
n/ V
nOrder: V
n=V
0
ρ
0/ρ
n=(m
0/V
0)/(m
n/V
n)=m
o/m
n?ρ
0=ρ
n(m
o/m
n)
V
0/V
n=(m
0/ρ
0)/(m
n/ρ
n)=(m
0g/ρ
0)/(m
ng/ρ
n)=W
0/[ρ
n(m
o/m
n)]/W
nρ
n=(W
0/W
n)(m
n/m
o)
Obtain formula: V
0/ V
n=(W
0/ W
n) (m
n/ m
o)
ρ
n: sample rate; ρ
0: the density of solvent; W
n: example weight; W
o: weight of solvent; V
n: sample volume; V
0: solvent volume; m
n: sample quality m
o:; Solvent quality; G: acceleration of gravity.
The course of work is as follows:
(1) emptying gasbag-type air driven pump (comprises elastic bag formula air driven pump I 3, elastic bag formula air driven pump II 4 and elastic bag formula air driven pump 6) and solution-air isolator 7 in liquid storage cylinder 27, for imbibition is prepared: process is: the relevant circuit (a of control system 2 controls, b, i, n, o, p, q) connect and (annotate: j, k, l, m disconnects), pneumatic system 1 is by corresponding reversing solenoid valve 5(5a, 5b, 5i, 5n, 5o, 5p, 5q), elastic bag 30 in whole elastic bag formula air driven pumps is inflated with the inflatable chamber 25 in whole solution-air isolators 7, and the gas in the liquid storage cylinder 27 is discharged (by gasbag-type operated pneumatic valve 9 and 4 kapillaries).
(2) suck reference liquid: process is: the circuit (a, b) that control system 2 controls are relevant disconnects, elastic bag 30 in the elastic bag formula air driven pump I 3 in elastic bag formula air driven pump 6 and reference liquid detection loop is by corresponding reversing solenoid valve 5(5a, 5b) shrink to exit and (annotate: inflation when reversing solenoid valve is switched on, exit during outage), liquid storage cylinder sucks reference liquid (drawing) from reference liquid bottle I 10 and reference liquid bottle II 22 simultaneously.
(3) inject reference liquid to solution-air isolator 7: process is: the relevant circuit (a of control system 2 controls, b, j, k, l, m) connect, while circuit (c, e, g, i) disconnect and (make the inflatable chamber 25 of solution-air isolator 7 by corresponding solenoid valve 5c, 5e, 5g, the 5i venting), pneumatic system 1 is by corresponding reversing solenoid valve 5(5a, 5b,) detect elastic bag 30 inflations in the elastic bag formula air driven pump I 3 in loop to elastic bag formula air driven pump 6 and reference liquid, reference liquid in the elastic bag formula air driven pump 6 is injected the solution-air isolator 7 in three sample detection loops, reference liquid in the elastic bag formula air driven pump I 3 in reference liquid detection loop is injected the solution-air isolator 7 that reference liquid detects the loop, simultaneously, gasbag-type operated pneumatic valve 9 is closed.
(4) measure viscometer constant K value: process is: the circuit (c, e, g, i) that control system 2 controls are relevant is connected, circuit (j, k, l, m) disconnects and makes gasbag-type operated pneumatic valve 9 open-minded simultaneously, pneumatic system 1 is by corresponding reversing solenoid valve 5 (5c, 5e, 5g, 5i), to 7 inflations of solution-air isolator, reference liquid flows in the corresponding kapillary 12 under gas pressure, thereafter flow into 14 li in the bottle of weighing, by weighing device it is weighed, its signal send control system 2 to process after amplifier 18 amplifies, and finishes and measures K.
(5) the emptying bottle of weighing: process is: the circuit (n, o, p, q) that control system 2 controls are relevant disconnects, elastic bag 30 in the corresponding elastic bag formula air driven pump II 4 is by reversing solenoid valve 5(5n, 5o, 5p, 5q) shrink venting, the simultaneously corresponding liquid storage cylinder 27 inspirations reference liquid in the bottle 14 of weighing.
(6) liquid is discharged in the waste liquid bottle 15: process is: the circuit (n, o, p, q) that control system 2 controls are relevant is connected, pneumatic system 1 is by corresponding reversing solenoid valve 5(5n, 5o, 5p, 5q), elastic bag 30 in the elastic bag formula air driven pump II 4 of correspondence is inflated, and reference liquid is extruded in the waste liquid bottle 15.
(7) suck sample and reference liquid: process is: the circuit (b, d, f, h) that control system 2 controls are relevant disconnects, elastic bag 30 in the elastic bag formula air driven pump I 3 is by corresponding reversing solenoid valve 5(5b, 5d, 5f, 5h) shrink venting, liquid storage cylinder 27 sucks sample/reference liquid simultaneously.
(8) inject sample and reference liquid to the solution-air isolation: process is: relevant circuit (b, d, f, the h of control system 2 controls, j, k, l, m) connect, circuit (c, e, g, i) disconnects simultaneously, pneumatic system 1 is by corresponding reversing solenoid valve 5(5b, 5d, 5f, 5h) elastic bag 30 inflations in the elastic bag formula air driven pump I 3, sample in the liquid storage cylinder 27 of elastic bag formula air driven pump I 3/reference liquid is injected solution-air isolator 7, and gasbag-type operated pneumatic valve 9 is closed simultaneously.
(9) measure sample: process is: the circuit (c, e, g, i) that control system 2 controls are relevant is connected, circuit (j, k, l, m) disconnects and makes gasbag-type operated pneumatic valve 9 open-minded simultaneously, pneumatic system 1 is by corresponding reversing solenoid valve 5, to 7 inflations of solution-air isolator, reference liquid/sample flows under gas pressure in the kapillary 12, flows into thereafter 14 li in the bottle of weighing, and by weighing device it is weighed, its signal send control system 2 to process after amplifier 18 amplifies, and finishes sample measurement.
Charge and discharge gas port during reversing solenoid valve 5 energising and be communicated with source of the gas and inflate, charge and discharge gas port during outage and be communicated with atmosphere and exit.
The kapillary 12 in three sample detection loops can be surveyed same sample, also can survey different samples.
For guaranteeing not to be subjected in the measuring process interference of temperature variation, reference liquid bottle, sample bottle, elastic bag formula air driven pump, solution-air isolator, gasbag-type operated pneumatic valve, kapillary etc. all can be put into calibration cell, as shown in Figure 6.
Claims (9)
1. full-automatic multitube capillary viscosimeter is characterized in that: comprise that control system, pneumatic system, the public infusion circuit of reference liquid, reference liquid detect loop and at least one sample detection loop, wherein,
The structure of the public infusion circuit of reference liquid is: comprise elastic bag formula air driven pump and reference liquid bottle I, the fluid inlet end of elastic bag formula air driven pump is connected with reference liquid bottle I pipeline;
The structure that described reference liquid detects the loop is: comprise reference liquid bottle II, solution-air isolator, kapillary, the bottle of weighing, weighing device, waste liquid bottle and two elastic bag formula air driven pumps: elastic bag formula air driven pump I, elastic bag formula air driven pump II, wherein, the fluid inlet end of elastic bag formula air driven pump I is connected with reference liquid bottle II pipeline, the liquid outlet end of elastic bag formula air driven pump I is connected with the fluid inlet end pipeline of solution-air isolator, the liquid outlet end of solution-air isolator is connected with the kapillary pipeline, and kapillary is connected with bottle pipeline of weighing; The fluid inlet end of elastic bag formula air driven pump II is connected with bottle pipeline of weighing, and the liquid outlet end of elastic bag formula air driven pump II is connected with the waste liquid bottle pipeline; The bottle of weighing is positioned on the weighing device;
The structure in described sample detection loop is: comprise sample bottle, solution-air isolator, kapillary, the bottle of weighing, weighing device, waste liquid bottle and two elastic bag formula air driven pumps: elastic bag formula air driven pump I, elastic bag formula air driven pump II, wherein, the fluid inlet end of elastic bag formula air driven pump I is connected with the sample bottle pipeline, the liquid outlet end of elastic bag formula air driven pump I is connected with the fluid inlet end pipeline of solution-air isolator, the liquid outlet end of solution-air isolator is connected with the kapillary pipeline, and kapillary is connected with bottle pipeline of weighing; The fluid inlet end of elastic bag formula air driven pump II is connected with bottle pipeline of weighing, and the liquid outlet end of elastic bag formula air driven pump II is connected with the waste liquid bottle pipeline; The bottle of weighing is positioned on the weighing device;
Be equipped with valve on described elastic bag formula air driven pump and the pipeline that reference liquid bottle I is connected, on elastic bag formula air driven pump I and the pipeline that reference liquid bottle II is connected, on elastic bag formula air driven pump I and the pipeline that sample bottle is connected and on solution-air isolator and the pipeline that kapillary is connected;
Described pneumatic system is provided with two output terminal: A output roads and B output road;
The gas port end that charges and discharge of described elastic bag formula air driven pump is connected with the B output road pipeline of pneumatic system by reversing solenoid valve;
The gas port that charges and discharge of described solution-air isolator is connected with the A output road pipeline of pneumatic system by reversing solenoid valve;
The liquid outlet end of the elastic bag formula air driven pump of the public infusion circuit of described reference liquid is connected with the fluid inlet end pipeline of the solution-air isolator on every galley proof product examine survey time road respectively;
Described pneumatic system, reversing solenoid valve, weighing device are connected with the control system circuit respectively.
2. a kind of full-automatic multitube capillary viscosimeter according to claim 1, it is characterized in that: the pneumatic pump structure of described elastic bag formula is: comprise housing, form a cavity---liquid storage cylinder in the housing, be provided with elastic bag in the liquid storage cylinder, the housing upper end is provided with and charges and discharge gas port, charge and discharge gas port and be communicated with elastic bag, the lower end of housing is provided with liquid outlet and liquid inlet, and liquid outlet and liquid inlet are communicated with liquid storage cylinder.
3. a kind of full-automatic multitube capillary viscosimeter according to claim 1, it is characterized in that: the structure of described solution-air isolator is: comprise housing, be provided with flexible partition in the housing, thereby enclosure interior is divided into two parts: the flexible partition top is inflatable chamber, and the below is liquid storage cylinder; The housing upper end is provided with and charges and discharge gas port, charges and discharge gas port and is communicated with inflatable chamber, and the housing lower end is provided with liquid outlet and liquid inlet, and liquid outlet and liquid inlet are communicated with liquid storage cylinder.
4. a kind of full-automatic multitube capillary viscosimeter according to claim 1, it is characterized in that: described valve is the gasbag-type operated pneumatic valve, the structure of gasbag-type operated pneumatic valve is: comprise valve body, form a cavity in the valve body, the cavity both sides are fluid passage, be provided with elastic bag in the cavity, elastic bag is provided with and charges and discharge gas port; Elastic bag is connected with the B output road pipeline of pneumatic system by reversing solenoid valve.
5. a kind of full-automatic multitube capillary viscosimeter according to claim 1, it is characterized in that: described elastic bag formula air driven pump I is provided with the pipeline loop with the pipeline that reference liquid bottle II is connected, the end in pipeline loop is communicated with the bottle of weighing, and pipeline and junction, pipeline loop are provided with hand-operated direction valve.
6. a kind of full-automatic multitube capillary viscosimeter according to claim 1 is characterized in that: be equipped with retaining valve on described elastic bag formula air driven pump I and the pipeline that the solution-air isolator is connected, on elastic bag formula air driven pump II and the pipeline that the bottle of weighing is connected, on elastic bag formula air driven pump II and the pipeline that waste liquid bottle is connected and on the elastic bag formula air driven pump of the public infusion circuit of reference liquid and the pipeline that the solution-air isolator on every galley proof product examine survey time road is connected.
7. a kind of full-automatic multitube capillary viscosimeter according to claim 1, it is characterized in that: the elastic bag formula air driven pump of the public infusion circuit of described reference liquid is provided with liquid injection port and manually-operated gate with the pipeline that the solution-air isolator on every galley proof product examine survey time road is connected.
8. a kind of full-automatic multitube capillary viscosimeter according to claim 1 is characterized in that: the weighing device that described reference liquid detects in loop/sample detection loop shares.
9. a kind of full-automatic multitube capillary viscosimeter according to claim 1, it is characterized in that: the housing of described elastic bag formula air driven pump and solution-air isolator all is to be made of the up and down two parts that are bolted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220364225 CN202676569U (en) | 2012-07-26 | 2012-07-26 | Fully-automatic multi-capillary-tube viscometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220364225 CN202676569U (en) | 2012-07-26 | 2012-07-26 | Fully-automatic multi-capillary-tube viscometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202676569U true CN202676569U (en) | 2013-01-16 |
Family
ID=47497468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220364225 Expired - Lifetime CN202676569U (en) | 2012-07-26 | 2012-07-26 | Fully-automatic multi-capillary-tube viscometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202676569U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749268A (en) * | 2012-07-26 | 2012-10-24 | 山东大学 | Full automatic multi-tube capillary viscometer |
| CN107271329A (en) * | 2017-06-07 | 2017-10-20 | 大连北方分析仪器有限公司 | High-temperature high shear viscosity analyzer |
| CN108645753A (en) * | 2018-06-23 | 2018-10-12 | 华电电力科学研究院有限公司 | A kind of device and assay method that power equipment is automatically measured with oily kinematic viscosity and viscosity index (VI) |
-
2012
- 2012-07-26 CN CN 201220364225 patent/CN202676569U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749268A (en) * | 2012-07-26 | 2012-10-24 | 山东大学 | Full automatic multi-tube capillary viscometer |
| CN102749268B (en) * | 2012-07-26 | 2014-10-22 | 山东大学 | Full automatic multi-tube capillary viscometer |
| CN107271329A (en) * | 2017-06-07 | 2017-10-20 | 大连北方分析仪器有限公司 | High-temperature high shear viscosity analyzer |
| CN108645753A (en) * | 2018-06-23 | 2018-10-12 | 华电电力科学研究院有限公司 | A kind of device and assay method that power equipment is automatically measured with oily kinematic viscosity and viscosity index (VI) |
| CN108645753B (en) * | 2018-06-23 | 2024-03-22 | 华电电力科学研究院有限公司 | Device and method for fully automatically measuring kinematic viscosity and viscosity index of oil for power equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204214881U (en) | A kind of automatic quantitative liquid feeder | |
| US10639662B2 (en) | Apparatus and method for dispensing or aspirating fluid | |
| CN100549695C (en) | A kind of measuring instrument of real-time human body blood viscosity | |
| CN202676569U (en) | Fully-automatic multi-capillary-tube viscometer | |
| CN102721516A (en) | Gas tightness detector and method for testing internal volume of container by aid of gas-release process | |
| CN106248309B (en) | Intelligent pressure testing machine | |
| CN105844800A (en) | Effluent metering system and effluent metering method of liquid vending machine | |
| CN109653737A (en) | Simulate viscous crude heat dissipation law experimental provision | |
| CN105928832A (en) | Capillary viscosity measuring instrument and fluid viscosity measuring method | |
| CN202575947U (en) | Double-station barrel extracting and cleaning device | |
| CN207261005U (en) | One kind simulation viscous crude heat dissipation law experimental provision | |
| CN108627222A (en) | A kind of oil meter nucleus correcting system | |
| CN102749268B (en) | Full automatic multi-tube capillary viscometer | |
| CN108169098A (en) | The reasonable mining speed simulator of coal bed gas straight well single-phase flow | |
| CN108507648A (en) | Continuous weighing metering device | |
| CN207832632U (en) | The reasonable mining speed simulator of coal bed gas straight well single-phase flow | |
| CN108981970A (en) | Metering device automatic calibration system | |
| CN201212393Y (en) | Weighing type oil well metering device | |
| CN205644786U (en) | Liquid measurement system of machine is sold to liquid | |
| CN109403951B (en) | Three-phase metering integrated device for oil well | |
| CN202661352U (en) | Liquid-liquid separation type capillary viscometer | |
| CN104599582B (en) | A kind of oil depot oil transferring examines and determine experiment device for teaching | |
| CN113945459A (en) | Multifunctional fracturing simulation experiment system and method | |
| CN113390626A (en) | Micro flow control pump valve device test system and test method | |
| KR20020095145A (en) | Micro viscometer and method of measurement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130116 Effective date of abandoning: 20141022 |
|
| RGAV | Abandon patent right to avoid regrant |