CN103267713A - Suspension suspensibility measurement apparatus and method for testing suspension suspensibility through gravity center method - Google Patents
Suspension suspensibility measurement apparatus and method for testing suspension suspensibility through gravity center method Download PDFInfo
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- CN103267713A CN103267713A CN2013101649630A CN201310164963A CN103267713A CN 103267713 A CN103267713 A CN 103267713A CN 2013101649630 A CN2013101649630 A CN 2013101649630A CN 201310164963 A CN201310164963 A CN 201310164963A CN 103267713 A CN103267713 A CN 103267713A
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Abstract
The present invention relates to a suspension suspensibility measurement apparatus and a method for testing suspension suspensibility through a gravity center method. The apparatus comprises a long tube-shaped test container, a clamper, a force measurement sensor and a support, wherein the clamper is clamped on the upper end of the test container, the test container is supported by the support through the clamper so as to incline the test container at a certain angle theta, the bottom end of the container is placed on the center of a test end of the force measurement sensor, and a center axis line of the test end is perpendicular to the horizontal plane. The invention further provides a method for testing suspension suspensibility through a gravity center method by using the apparatus. The apparatus and the method have the following characteristics that: test data is accurate, error is low, multiple test consistency of the same suspension is good, and suspensions with different suspensibilities can be well distinguished.
Description
Technical field
The present invention relates to the method for a kind of suspension suspension determinator and gravity model appoach test suspension suspension property, belong to suspension and measure the field.
Background technology
The suspension stability of suspension is an important performance indexes of suspension.But at present suspension property is not also had special testing tool, at present common method has following several: 1. graduated cylinder settled process: a certain amount of suspension is poured in the graduated cylinder, left standstill certain hour, observe layering interfaces or supernatant liquor volume; 2. test the differing heights densimetry: after suspension is left standstill certain hour, in differing heights sampling, the situation of change of specimen density; 3. orthobaric volume weighing method: formulate a cover volumetric standard sampling cup, measure the density of three sections of suspension upper, middle and lower respectively, and then analyze and draw suspension property; 4. settling leg method: adopt settling leg middle-end sampling method, solid content in the specimen characterizes the sedimentation situation again; 5. CN200920112004.3 provides a kind of food colloidal suspension analyzer, includes the elongated shape glass tube, and this pipe side side is equipped with upper and lower electrooptical device, and this device connects with the microcomputer that timing shows.This analyzer is exclusively used in the mensuration of food colloidal suspension, does not have instrumentation and determination data error greatly, accurate defective provides accurately analyzer easily inadequately for improving food colloidal suspension mensuration.This device is by liquid sink-float pearl fall time is measured to reflect the glue suspension, and more long suspension of time is more good; 6. CN102435538A provides a kind of suspension stability proving installation and method of testing of testing the suspending stabilized performance of high density working fluid solid phase particles under the High Temperature High Pressure.Utilize high temperature high voltage resistant container side wall mounting temperature sensor and 11 pressure units that equidistantly distribute, the method for measuring differing heights pressure characterizes suspension stability.
But following one or more problems of above method existence in various degree: 1. suspension need leave standstill the long period, can know its suspension property; 2. can only observational measurement, test error is bigger during quantitative measurment; 3. if suspension does not have obvious layering or layering time spent when longer, and suspension has color to adhere to make container opaque and can't observe layering the time, then can't test its suspension property; 4. the scope of application is little, and can not reflect the sedimentation situation that suspension inside causes because of the granularity inequality; 5. test vessel is many, and operation steps is many, complicated operation; 6. take a sample again after leaving standstill a period of time, can stir suspension, cause error; 7. the equipment degree of accuracy is required high, device structure complexity, the proving installation of mentioning as CN102435538A; Deng.
Summary of the invention
The present invention is directed to the existing problem of above existing method, the method for a kind of suspension suspension determinator and gravity model appoach test suspension suspension property is provided.
Technical scheme of the present invention is as follows:
A kind of suspension suspension determinator, this device comprises an elongate tubular test container, anchor clamps, force cell or electronic analytical balance, support; Described anchor clamps are clamped in the upper end of test container, described support is by the fixture support test container, make test container inclination certain angle θ, the container bottom places force cell test lead center or electronic analytical balance center, and the test lead axis is perpendicular to surface level.
Preferred according to the present invention, described test container is that circular test tube or any xsect are the oblate container of identical ellipse.The test container of flat can reduce center of gravity on the container cross section direction variation and the error that causes.
Preferred according to the present invention, described anchor clamps also comprise pole, are used for the stent support test container, and during test, anchor clamps pole is vertical with test container length direction center line, and pole is supported test container and can freely be rotated on perpendicular to the face of surface level around pole.
Preferred according to the present invention, described test container and horizontal plane angle θ=10～85 °.
Preferred according to the present invention, this device also includes the microcomputer of information acquisition and disposal system, described force cell connects with the microcomputer information acquisition port of timing and record power, by automatic writing time of microcomputer and force cell institute dynamometry, automatically draw suspension center of gravity and test container bottom distance-time curve, i.e. l-t curve.
Device of the present invention can manual time-keeping, record force cell institute dynamometry, calculate mapping suspension center of gravity and test container bottom distance-time curve (l-t curve) then, also microcomputer writing time and force cell institute dynamometry be can pass through, suspension center of gravity and test container bottom distance-time curve (l-t curve) drawn automatically.
A kind of method of gravity model appoach test suspension suspension property comprises and uses device of the present invention that step is as follows:
(1) use the clamp test container, anchor clamps pole place straight line is vertical with test container length direction center line;
(2) anchor clamps pole places the stent support end, anchor clamps pole place straight line is parallel with surface level, test container is tilted, the container bottom is put in force cell test lead center, and anchor clamps pole place is L perpendicular to the intersection point of the face of surface level and test container length direction center line apart from the distance of container bottom; Force cell test lead axis is θ perpendicular to surface level with protractor measurement test container length direction and horizontal plane angle, and this moment, force cell institute dynamometry was F
0, manual record or microcomputer record the dynamometry F of force cell institute automatically by information acquisition system
0
(3) be that the suspension of M is poured in the test container with the quality that stirs, manual record or microcomputer are by automatic writing time of information acquisition system and force cell institute dynamometry; Record different time t
1..., t
nCorresponding torque sensor numerical value F
1..., F
n, common tags is F; Artificial or microsystem curve plotting F-t;
(4) establish suspension distance of centre of gravity container bottom apart from l, according to equalising torque and geometrical principle, as can be known:
(F-F
0)Lcosθ=Mg(L-l)cosθ
In the formula: g---be acceleration of gravity.
According to L, θ, M, the t that (1)～(3) record
1..., t
n, F
1..., F
n, (I) obtains l according to following formula
1..., l
n, artificial or microsystem curve plotting l-t can get suspension center of gravity curve over time, i.e. subsidence curve during suspension cant angle theta angle.
When replacing force cell with electronic analytical balance, survey numerical value m with electronic balance and multiply by the gravity acceleration g replacement force cell dynamometry F of institute, be i.e. F=mg, F
0=m
0G.
When different suspensions was settled down to identical F-t curve tangent line and time coordinate axle clamp angle, the corresponding time was more short, and this suspension suspension is more poor.The F-t curve is not subjected to L and θ influence of measurement error.
Suspension l-t curve tangent slope is the suspension settling velocity.The settling velocity of different identical settling times of suspension is more big, and then the suspension suspension property is more poor; When different suspensions are settled down to identical l-t curve tangent line and time coordinate axle clamp angle the corresponding time more short, then the suspension property of this suspension is more poor.
Proving installation of the present invention and method are specially adapted to aqueous suspension, aqueous high molecular material suspension, aqueous inorganic material suspension etc., aqueous inorganic material suspension, as high temperature high-radiation energy-saving coating suspension, the main high temperature high-radiation energy-saving coating suspension of being formed by solid material such as monox or chromium oxide, zirconia, SiC, brown corundum, titanium dioxide, refractory clay, bentonitic clay and carboxymethyl cellulose, PA80 glue or liquid such as water glass, water.
Principle of the present invention: the suspension property of suspension is relevant with the motion conditions of suspension component gravitate, and some component sedimentation of suspension must cause the suspension center of gravity to move down under the gravity effect.In the identical time, the suspension center of gravity amount of moving down is more big, i.e. sedimentation is more serious, shows that the suspension suspension is more poor.The variation that the suspension center of gravity shifts the power cause is easily to survey, and calculates the centre of gravity place of different settling times again according to mechanics and geometrical principle, can obtain settling velocity and the subsidence curve of suspension, i.e. the suspension property of suspension as can be known.
Advantage of the present invention:
⑴ test data is accurate, and error is little, and identical suspension is repeatedly tested high conformity, can well distinguish different suspensions;
⑵ the settling velocity of quantitative test suspension, the i.e. suspension property of quantitatively characterizing suspension;
⑶ can realize follow-on test, obtains the suspension subsidence curve, and the settling velocity of reflection different time changes;
⑷ it is painted in the influence of situations such as vessel surface, observation layering difficulty that can not be subjected to suspension, and it is wide to be suitable for the suspension scope;
⑸ methodological science, proving installation, operation and calculate simply are suitable for manual measurement and machine is measured automatically.
Description of drawings
Fig. 1 is suspension suspension proving installation synoptic diagram.Wherein: 1, support, 2 test containers, 3, anchor clamps, 4, force cell, 5, have a microcomputer of information acquisition and disposal system, 6, the support end of support, 7, anchor clamps pole.
Fig. 2 is the support synoptic diagram, is the left view of Fig. 1 medium-height trestle.Wherein: 6, the support end of support.
Fig. 3 is the test container synoptic diagram, and the cross section is oval.
Fig. 4 is the anchor clamps synoptic diagram.Wherein: 7, anchor clamps pole.
Fig. 5 is the force cell synoptic diagram.Wherein: 8, sensor test end.
Fig. 6 is embodiment 2 curve l-t figure.Horizontal ordinate is time t (s), and ordinate is suspension distance of centre of gravity container bottom l (mm).
Fig. 7 is embodiment 2 curve F-t figure.Horizontal ordinate is time t (s), and ordinate is the dynamometry F of load transducer institute (N).
Embodiment
The invention will be further described below in conjunction with embodiment and accompanying drawing, but be not limited thereto.
The force cell that uses among the embodiment is the miniature force cell that the right sensing EVT-14B of Science and Technology Ltd. model is swum in Shanghai; The test container that uses among the embodiment is that xsect is the tubular container (oblateness) of identical ellipse.
Embodiment 1:
A kind of suspension determinator, structure as shown in Figure 1.This device comprises support (1), test container (2), anchor clamps (3), force cell (4), has the microcomputer (5) of information acquisition system.Described test container is that xsect is oval oblate long tube container.Described force cell (4) connects with the microcomputer that has information acquisition and disposal system (5); Anchor clamps (3) clamp test container, and anchor clamps pole (7) is placed on the support end (6) of support (1), and test container (2) lower end is placed on the test lead (8) of force cell (4), and test container and horizontal plane angle are θ, θ=10～85 °
Embodiment 2:
A kind of suspension property test of high radiated infrared energy-saving coatings, proving installation such as embodiment 1.Force cell links with the microcomputer that has acquisition system, anchor clamps are fixed in container upper end, anchor clamps pole place straight line is vertical with container length direction center line, anchor clamps pole place is L=400mm perpendicular to the face of surface level and intersection point and the test container bottom distance of container length direction center line, anchor clamps pole is placed on the support end of support, the test container lower end is placed on the test lead of force cell, and test container and horizontal plane angle are θ=60 °.Record force cell this moment is counted F
0=0.5N; Pack behind a certain amount of mass M=180g suspension microcomputer information acquisition system automatic writing time of t (t into
1..., t
n) and the dynamometry F (F of force cell institute
1..., F
n), draw the F-t curve, as shown in Figure 7.If suspension centroidal distance container bottom is l, then:
According to Newton third law, gravity formulat and force balance principle as can be known:
(F-F
0)Lcosθ=Mg(L-l)cosθ
According to following formula, computer software is handled institute's measured power of pick-up transducers automatically, draws out the l-t curve as shown in Figure 6.
Interpretation of result:
1. curve can intuitively react the variation tendency of the center of gravity of this coating among Fig. 6.The center of gravity of suspension descends along with the prolongation of settling time, and the speed that descends is trend first quick and back slow, and the tangent slope of arbitrfary point is the subsidence rate of this time point on the curve;
2. the settling time is 60s, 120s, 180s, 240s, 300s ... the time, the coating settling velocity is respectively 0.2664mm/s, 0.1932mm/s, and 0.1476mm/s, 0.1218mm/s, 0.0972mm/s ...
Settling time when 3. l-t curve tangent line and time coordinate axle clamp angle are 60 °, 45 °, 30 ° is respectively 55s, 110s, 400s.
Settling time when 4. F-t curve tangent line and time coordinate axle clamp angle are 60 °, 45 °, 30 ° is respectively 55s, 110s, 400s.
Embodiment 3:
A kind of suspension determinator replaces force cell among the embodiment 2 with electronic analytical balance, and other is identical with embodiment 2.The dynamometry F of force cell institute surveys numerical value m with electronic balance and multiply by gravity acceleration g replacement among the embodiment 2 in this device, i.e. F=mg, F
0=m
0G.
Claims (6)
1. a suspension suspension determinator is characterized in that this device comprises an elongate tubular test container, anchor clamps, force cell or electronic analytical balance, support; Described anchor clamps are clamped in the upper end of test container, described support is by the fixture support test container, make test container inclination certain angle θ, the container bottom places force cell test lead center or electronic analytical balance center, and the test lead axis is perpendicular to surface level.
2. suspension suspension determinator as claimed in claim 1 is characterized in that described test container is that circular test tube or any xsect are the oblate container of identical ellipse.
3. suspension suspension determinator as claimed in claim 1, it is characterized in that described anchor clamps also comprise pole, be used for the stent support test container, during test, anchor clamps pole is vertical with test container length direction center line, and pole is supported test container and can freely be rotated on perpendicular to the face of surface level around pole.
4. suspension suspension determinator as claimed in claim 1 is characterized in that described test container and horizontal plane angle θ=10～85 °.
5. suspension suspension determinator as claimed in claim 1, it is characterized in that this device also includes the microcomputer of information acquisition and disposal system, described force cell connects with the microcomputer information acquisition port of timing and record power, by automatic writing time of microcomputer and force cell institute dynamometry, automatically draw suspension center of gravity and test container bottom distance-time curve, i.e. l-t curve.
6. the method for a gravity model appoach test suspension suspension property comprises that right to use requires each described device of 1-5, and step is as follows:
(1) use the clamp test container, anchor clamps pole place straight line is vertical with test container length direction center line;
(2) anchor clamps pole places the stent support end, anchor clamps pole place straight line is parallel with surface level, test container is tilted, the container bottom is put in force cell test lead center, and anchor clamps pole place is L perpendicular to the intersection point of the face of surface level and test container length direction center line apart from the distance of container bottom; Force cell test lead axis is θ perpendicular to surface level with protractor measurement test container length direction and horizontal plane angle, and this moment, force cell institute dynamometry was F
0, manual record or microcomputer record the dynamometry F of force cell institute automatically by information acquisition system
0
(3) be that the suspension of M is poured in the test container with the quality that stirs, manual record or microcomputer are by automatic writing time of information acquisition system and force cell institute dynamometry; Record different time t
1..., t
nCorresponding torque sensor numerical value F
1..., F
n, common tags is F; Artificial or microsystem curve plotting F-t;
(4) establish suspension distance of centre of gravity container bottom apart from l, according to equalising torque and geometrical principle, as can be known:
(F-F
0)Lcosθ=Mg(L-l)cosθ
In the formula: g---be acceleration of gravity;
According to L, θ, M, the t that (1)～(3) record
1..., t
n, F
1..., F
n, (I) obtains l according to following formula
1..., l
n, artificial or microsystem curve plotting l-t can get suspension center of gravity curve over time, i.e. subsidence curve during suspension cant angle theta angle.
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| CN201310164963.0A CN103267713B (en) | 2013-05-07 | 2013-05-07 | Suspension suspensibility measurement apparatus and method for testing suspension suspensibility through gravity center method |
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| CN201310164963.0A CN103267713B (en) | 2013-05-07 | 2013-05-07 | Suspension suspensibility measurement apparatus and method for testing suspension suspensibility through gravity center method |
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| CN103267713B CN103267713B (en) | 2015-01-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105445418A (en) * | 2014-09-27 | 2016-03-30 | 中国石油化工集团公司 | Drilling fluid stability test method |
| CN106646277A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Drilling fluid sedimentary stability evaluation device and method |
| CN107621429A (en) * | 2017-09-26 | 2018-01-23 | 中煤科工集团西安研究院有限公司 | A kind of normal temperature, which suspends by force, starches Stability Determination device and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445418A (en) * | 2014-09-27 | 2016-03-30 | 中国石油化工集团公司 | Drilling fluid stability test method |
| CN106646277A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Drilling fluid sedimentary stability evaluation device and method |
| CN107621429A (en) * | 2017-09-26 | 2018-01-23 | 中煤科工集团西安研究院有限公司 | A kind of normal temperature, which suspends by force, starches Stability Determination device and method |
| CN107621429B (en) * | 2017-09-26 | 2019-10-18 | 中煤科工集团西安研究院有限公司 | A kind of room temperature suspends by force slurry Stability Determination device and method |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
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Denomination of invention: Suspension Suspension measuring device and method for testing suspension performance of suspension by gravity center method Effective date of registration: 20220310 Granted publication date: 20150107 Pledgee: Ji'nan rural commercial bank Limited by Share Ltd. high tech branch Pledgor: SHANDONG HUIMIN SCIENCE & TECHNOLOGY CO.,LTD. Registration number: Y2022980002330 |
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Date of cancellation: 20230221 Granted publication date: 20150107 Pledgee: Ji'nan rural commercial bank Limited by Share Ltd. high tech branch Pledgor: SHANDONG HUIMIN SCIENCE & TECHNOLOGY CO.,LTD. Registration number: Y2022980002330 |
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Denomination of invention: Suspension test device and center of gravity method for measuring suspension performance of suspension Effective date of registration: 20230224 Granted publication date: 20150107 Pledgee: Ji'nan rural commercial bank Limited by Share Ltd. high tech branch Pledgor: SHANDONG HUIMIN SCIENCE & TECHNOLOGY CO.,LTD. Registration number: Y2023980033303 |