CN102735588A - Simple determinator for propellant slurry processing properties - Google Patents
Simple determinator for propellant slurry processing properties Download PDFInfo
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- CN102735588A CN102735588A CN2011104327593A CN201110432759A CN102735588A CN 102735588 A CN102735588 A CN 102735588A CN 2011104327593 A CN2011104327593 A CN 2011104327593A CN 201110432759 A CN201110432759 A CN 201110432759A CN 102735588 A CN102735588 A CN 102735588A
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- anchor clamps
- data acquisition
- acquisition system
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- step motor
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Abstract
The invention discloses a simple determinator for propellant slurry processing properties, comprising a data acquisition system, a computer, a motor controller, a temperature controller for adjusting the medium temperature in a thermostatic bath, measuring the actual temperature and transmitting in real-time, and a force sensor, wherein a lifting table is arranged on a rack, the thermostatic bath is arranged on the lifting table, a material cup is arranged in the thermostatic bath, the force sensor and the data acquisition system form a detector, the detector has the rigid connection with a fixture which is used for dipping in the slurry in the material cup to detect, and a step motor and the motor controller which is connected with the step motor form a drive control system for driving and controlling the lifting table. According to the invention, a series of processing properties of the slurry are obtained by adopting force changes of the detection fixture when setting the detection fixture to lift in the slurry with a controllable speed at a controllable temperature and gelation reaction time of the curing system can be measured, and the determinator has the advantages of strong detection functionality, simple operation, and convenience in carrying.
Description
Technical field
The present invention relates to a kind of medicine slurry processing characteristics mechanics test device.
Background technology
Composite Propellant Slurry is that a kind of height that comprises compositions such as solids, liquid medium and high polymer binder, hardening agent contains the ability slurry; Show the complicated rheological characteristics of suspended matter and grain flow; Comprise the tensile properties of surrender, non-Newtonianism, thixotropy, wall slippage and complicacy etc., thereby in actual batch mixing and filling process, show the different processes characteristic.The instrument of this type of system processing characteristics of test often adopts traditional rotational rheometer and viscosity meter at present, can't reflect the complex nature and the flow characteristics of medicine slurry system.Also there are many measurement difficulties in the assay method of this type of traditional instrument, like the wall slippage effect.De professor Kee of Tulane university proposes a kind of new assay method; Promptly the cutting flat board is pulled out from determinand with suspension; Measure its loading process, the method is mainly used in measures low yield stress suspension system, can't be used for high mensuration of filling concentrate suspension system.
Summary of the invention
The objective of the invention is to overcome the above-mentioned deficiency that prior art exists and a kind of quick test that is applicable to is provided, test specification is wide, and test function is strong, the Composite Propellant Slurry processing characteristics easily-testing appearance of easy to carry, simple to operate, good reliability.
Technical program of the present invention lies in: comprise support, material cup, anchor clamps, detection system;
Said detection system comprises: the electric signal that reception sensor, temperature controller, motor controller are gathered; Control by microprocessor; The electric signal of being gathered through multi-channel sampling switch, amplify the back, be converted to digital signal through A/D again through analog signal amplifier, is stored digital signal and digital signal is fed back to through the usb data line data acquisition system (DAS) of computing machine through data storage medium; The digital signal that will receive data acquisition system (DAS) is carried out data processing through the software real time record and according to setting formula, by set the computing machine that output format shows and writes down in computer; Steering order control step motor running that receiving computer sent, measure the step motor actual speed, and institute's survey step motor actual speed is real-time transmitted to the motor controller of data acquisition system (DAS); The steering order that receiving computer sent is regulated medium temperature in the calibration cell, is measured actual temperature in the calibration cell, and actual temperature in institute's survey calibration cell is real-time transmitted to the temperature controller of data acquisition system (DAS); A force transducer that measured power voltage signal is real-time transmitted to data acquisition system (DAS); Power module to computing machine, step motor, temperature controller and data acquisition system (DAS) power supply;
Said support is provided with lifting table; Calibration cell is arranged on the lifting table; The material cup is positioned in the calibration cell; Said force transducer, data acquisition system (DAS) are formed detecting device; Detecting device is got in the material cup medicine slurry so that the anchor clamps that detect link to each other with being used to dip in; Said anchor clamps and detecting device are for being rigidly connected; Step motor, the motor controller that links to each other with step motor are formed the driving control system that is used for the drive controlling lifting table.
Said anchor clamps are flat board or cylinder or the tabular combination that has cutting more than.
Said anchor clamps are flat board or cylinder or the tabular combination that has hole more than.
Said anchor clamps are the flat board or the cylinder of surface smoothing atresia.
Said anchor clamps are probe.
The present invention compared with prior art has following advantage:
the present invention is through changing a series of processing characteristics that anchor clamps can be starched at relative broad range test medicine quickly and easily, like yield stress, AV, levelability, tensile properties and gelation reaction time.
Adopt rigidity to be connected firmly between
used anchor clamps of the present invention and the detecting device; The direction of motion that guarantees anchor clamps and detecting device and between shear direction consistent, avoid error.Rigidly connected use makes that the kind of measurement system is diversified more, has widened application of the present invention.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of anchor clamps (cutting slab construction).
Fig. 3 is the structural representation of anchor clamps (perforated flat plate structure).
Fig. 4 is the structural representation of anchor clamps (four cutting blade square crossing structures).
Fig. 5 is circuit control principle figure of the present invention.
Anchor clamps were pulled out the stressed synoptic diagram in the process when Fig. 6 tested for the present invention.
Fig. 7 is the structural representation of tensile properties test accessories of the present invention.
Among the figure, 1, anchor clamps, 2, detecting device, 3, driving control system, 4, temperature control system; 5, support, 6, computing machine, 7, motor controller, 8, step motor; 9, lifting table, 10, material cup, 11, the high-speed CCD video camera, 12, the slurry filament; 13, light source, 1-a, cutting plate jig, 1-b, perforated flat plate anchor clamps, 1-c, four cutting blade square crossing anchor clamps.
Embodiment
Among Fig. 1, support 5 is provided with lifting table 9; Calibration cell is arranged on the lifting table 9; Material cup 10 is positioned in the calibration cell; Force transducer, data acquisition system (DAS) are formed detecting device 2; Detecting device 2 is got in the material cup 10 medicines slurry so that the anchor clamps 1 that detect link to each other with being used to dip in; Anchor clamps 1 and detecting device 2 are for being rigidly connected; Step motor 8, the motor controller 7 that links to each other with step motor 8 are formed the driving control system 3 that is used for drive controlling lifting table 9.
Elemental motion principle of the present invention is: computing machine 6 makes motor controller 7 and step motor 8 drive controlling lifting tables 9 with anchor clamps 1 vertical immersion slurry; Make the blade of anchor clamps 1 be immersed in the slurry fully; Extract again; Anchor clamps 1 are stressed by detecting device 2 measurements and input computing machine 6, with software conversion stress curve, and record.Material cup 10 is fixed in temperature control system 4, guarantees to measure accurately.
It is wide that anchor clamps 1 of the present invention are suitable for the tested object scope, is generally the cutting or the perforated flat plate of band thin metal rod, and thin metal rod requires to have rigidity.According to object difference to be measured, can design the anchor clamps of different geometries, different surfaces pattern, can adopt the anchor clamps of four cuttings or hole leaf right-angled intersection like tested viscosity system on the low side.Make anchor clamps 1 flat board of surface smoothing atresia into, and compare, can test the wall slippage effect with data that groove or porous plate anchor clamps 1 obtain; Anchor clamps 1 are changed into probe, can obtain the gelation reaction time of curing system; Add temperature control system 4 and can realize temperature variation testing.At last, for realizing the simple and easy convenient and degree of precision of instrument, anchor clamps 1, detecting device 2, driving control system 3, temperature control system 4, support 5, machine element are adopted the miniaturization structure, to be convenient for carrying; Select the mechanical part of excellent performance for use and adopt ground connection processing,, improve the instrument test precision to reduce mechanical noise and electrical noise; The up-down of anchor clamps 1 can realize a key control, and computing machine 6 is connected through USB with instrument, and characterisitic parameter measured in the experimentation can directly feed back on the software interface, makes simple to operateization.
Among Fig. 2,1-a is the cutting plate jig.
Among Fig. 3,1-b is the perforated flat plate anchor clamps.
Among Fig. 4,1-c is four cutting blade square crossing anchor clamps.
Among Fig. 5, computing machine is connected with temperature controller with motor controller respectively.Computing machine is transferred to steering order in motor controller and the temperature controller, and motor controller is through steering order control step motor running.Temperature controller is regulated medium temperature in the calibration cell through steering order.The parameter that motor controller and temperature controller will be measured immediately (being motor actual speed, actual temperature) is real-time transmitted to data acquisition system (DAS).Simultaneously, force transducer is given data acquisition system (DAS) with measured power voltage signal real-time Transmission.Data acquisition system (DAS) is controlled by microprocessor, and motor controller, temperature controller and force transducer pass through multi-channel sampling switch with the electric signal that response obtains, and after amplifying through analog signal amplifier, is converted to digital signal through A/D again.Digital signal is stored through data storage medium, then feeds back to computing machine through the usb data line.Computing machine passes through the numerical value of software real time record temperature, motor rotary speed and power, and carries out data processing according to setting formula, shows and record in computer by setting output format.Power module is to computing machine, motor, temperature controller and data acquisition system (DAS) power supply.
Among Fig. 6, from beginning the point to A, stress linear growth, material show pure elasticity among the figure; The A point shows the nonlinear elasticity sexual behaviour to the B point; The stress that the B point is corresponding is the yield stress of tested systems, and to some media, during the B point, existing partially liq is pulled out liquid level, can strengthen apparent yield stress.
Among Fig. 7, but the parallel-plate anchor clamps 1 vertical movement test system tensile property of horizontal positioned.In the test process, the control lifting table, through high-speed CCD video camera 11 record slurry filaments 12 diameters over time, through computing machine 6 Control Software Treatment Analysis, data-switching can obtain the variation relation of slurry tensile viscosity with rate of extension.10 are the material cup, and 13 is light source.
The present invention can be reflected the major parameter of medicine slurry processing characteristics as follows in test process:
As shown in Figure 6, from beginning the point to A, stress linear growth, material show pure elasticity among the figure; The A point shows the nonlinear elasticity sexual behaviour to the B point; The stress that the B point is corresponding is the yield stress of tested systems, and to some media, during the B point, existing partially liq is pulled out liquid level, can strengthen apparent yield stress.
AV
Before anchor clamps are drawn out determinand, the shear rate in the time of can obtaining pulling out through corresponding conversion relation, and then obtain the AV of determinand.The expression formula of AV is following:
Wherein,
is the to be edited constant relevant with clamp-shaped;
is the length of anchor clamps;
is the density of medicine slurry, and
is the elevation rate of anchor clamps.
After anchor clamps are completely pulled out of and stop, pulling out slurry because action of gravity begins gradually lax saggingly, stress reduces thereupon gradually, and this can be used as near exponential damping stress relaxation process and describes medicine slurry levelability index.The characteristic flow time of slurry is the time that stress becomes 1/e, levelability
PCan be expressed as:
Wherein, Stress when
expression zero-time is
; Stress when
express time is infinitely great; E is the end of natural logarithm, is 2.71828.
It is big more,
PBe worth more for a short time, levelability is poor more.
In Fig. 1, add the tensile properties that optical accessory can be measured slurry, as shown in Figure 7,1 is anchor clamps, and 6 is computing machine, and 10 are the material cup, and 11 is the high-speed CCD video camera, and 12 is the slurry filament, and 13 is light source.But the parallel-plate anchor clamps 1 vertical movement test system tensile property of horizontal positioned.In the test process, control lifting table 9, through high-speed CCD video camera 11 record slurry filaments 12 diameters over time, through the computer control software Treatment Analysis, data-switching can obtain the variation relation of slurry tensile viscosity with rate of extension.
Anchor clamps are changed into probe, at set intervals probe is applied the vibration of certain frequency,, can obtain the gelation reaction time of curing system through the stressed change procedure in time of detector recording probe.
Claims (5)
1. a Composite Propellant Slurry processing characteristics simple measuring appearance is characterized in that: comprise support, material cup, anchor clamps, detection system;
Said detection system comprises:
The electric signal that reception sensor, temperature controller, motor controller are gathered; Control by microprocessor; The electric signal of being gathered through multi-channel sampling switch, amplify the back, be converted to digital signal through A/D again through analog signal amplifier, is stored digital signal and digital signal is fed back to through the usb data line data acquisition system (DAS) of computing machine through data storage medium;
The digital signal that will receive data acquisition system (DAS) is carried out data processing through the software real time record and according to setting formula, by set the computing machine that output format shows and writes down in computer;
Steering order control step motor running that receiving computer sent, measure the step motor actual speed, and institute's survey step motor actual speed is real-time transmitted to the motor controller of data acquisition system (DAS);
The steering order that receiving computer sent is regulated medium temperature in the calibration cell, is measured actual temperature in the calibration cell, and actual temperature in institute's survey calibration cell is real-time transmitted to the temperature controller of data acquisition system (DAS);
A force transducer that measured power voltage signal is real-time transmitted to data acquisition system (DAS);
Power module to computing machine, step motor, temperature controller and data acquisition system (DAS) power supply;
Said support is provided with lifting table; Calibration cell is arranged on the lifting table; The material cup is positioned in the calibration cell; Said force transducer, data acquisition system (DAS) are formed detecting device; Detecting device is got in the material cup medicine slurry so that the anchor clamps that detect link to each other with being used to dip in; Said anchor clamps and detecting device are for being rigidly connected; Step motor, the motor controller that links to each other with step motor are formed the driving control system that is used for the drive controlling lifting table.
2. Composite Propellant Slurry processing characteristics simple measuring appearance according to claim 1 is characterized in that: said anchor clamps are flat board or cylinder or the tabular combination that has cutting more than.
3. Composite Propellant Slurry processing characteristics simple measuring appearance according to claim 1 is characterized in that: said anchor clamps are flat board or cylinder or the tabular combination that has hole more than.
4. Composite Propellant Slurry processing characteristics simple measuring appearance according to claim 1 is characterized in that: said anchor clamps are the flat board or the cylinder of surface smoothing atresia.
5. Composite Propellant Slurry processing characteristics simple measuring appearance according to claim 1, it is characterized in that: said anchor clamps are probe.
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| CN2011104327593A CN102735588A (en) | 2011-12-21 | 2011-12-21 | Simple determinator for propellant slurry processing properties |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175755A (en) * | 2013-04-09 | 2013-06-26 | 佛山顾地塑胶有限公司 | Method for detecting fusing degree of polyvinyl chloride or chlorinated polyvinyl chloride |
| CN103592203A (en) * | 2013-11-19 | 2014-02-19 | 河南海格尔高温材料有限公司 | Experimental method and device for detecting relative viscosity of phenolic resin |
| CN104280311A (en) * | 2013-07-18 | 2015-01-14 | 湖北航天化学技术研究所 | Device and method for testing after-burnt gas yield of combustible material |
| JP2017198543A (en) * | 2016-04-27 | 2017-11-02 | 住友金属鉱山株式会社 | Viscosity measuring apparatus and viscosity measuring method |
| AT520100A1 (en) * | 2017-06-22 | 2019-01-15 | Ifn Holding Ag | Method for determining the pot life |
| CN112595630A (en) * | 2020-11-23 | 2021-04-02 | 上海航天化工应用研究所 | Solid propellant slurry leveling property testing device and method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175755A (en) * | 2013-04-09 | 2013-06-26 | 佛山顾地塑胶有限公司 | Method for detecting fusing degree of polyvinyl chloride or chlorinated polyvinyl chloride |
| CN103175755B (en) * | 2013-04-09 | 2015-03-25 | 佛山顾地塑胶有限公司 | Method for detecting fusing degree of polyvinyl chloride or chlorinated polyvinyl chloride |
| CN104280311A (en) * | 2013-07-18 | 2015-01-14 | 湖北航天化学技术研究所 | Device and method for testing after-burnt gas yield of combustible material |
| CN103592203A (en) * | 2013-11-19 | 2014-02-19 | 河南海格尔高温材料有限公司 | Experimental method and device for detecting relative viscosity of phenolic resin |
| CN103592203B (en) * | 2013-11-19 | 2016-06-29 | 河南海格尔高温材料有限公司 | A kind of experimental technique detecting relative viscosity of phenolic resin and device |
| JP2017198543A (en) * | 2016-04-27 | 2017-11-02 | 住友金属鉱山株式会社 | Viscosity measuring apparatus and viscosity measuring method |
| AT520100A1 (en) * | 2017-06-22 | 2019-01-15 | Ifn Holding Ag | Method for determining the pot life |
| CN112595630A (en) * | 2020-11-23 | 2021-04-02 | 上海航天化工应用研究所 | Solid propellant slurry leveling property testing device and method |
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Application publication date: 20121017 |