CN205193185U - Powder material spontaneous polarization capability test system - Google Patents
Powder material spontaneous polarization capability test system Download PDFInfo
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- CN205193185U CN205193185U CN201521011282.1U CN201521011282U CN205193185U CN 205193185 U CN205193185 U CN 205193185U CN 201521011282 U CN201521011282 U CN 201521011282U CN 205193185 U CN205193185 U CN 205193185U
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Abstract
The utility model relates to a powder material spontaneous polarization capability test system, including motor, lotus electric transducer, digital voltmeter and computer, this test system of its characterized in that still includes electric charge acquisition unit, and motor, electric charge acquisition unit, lotus electric transducer, digital voltmeter and computer connect gradually, electric charge acquisition unit includes connecting axle axle storehouse, sample room bottom magnetic pole, built -in positive plate, sample lid, collecting ring, sample room, built -in negative plate, sample room upper portion magnetic pole, insulation shell and cylinder, the sample room be cylinder upper end to its lower extreme processed annular groove, its top be uncovered, bottom and for sealing the end, is equipped with built -in positive plate on the internal diameter of sample room, is equipped with built -in negative plate on the external diameter, the insulation shell is lower part open -ended cylinder, and is inside from last to being equipped with sample lid, cylinder and sample room bottom magnetic pole down at the insulation shell, and sample lid is on the cylinder, and the magnetic pole lies in the bottom of cylinder bottom the sample room.
Description
Technical field
The utility model relates to material spontaneous polarization performance field of measuring technique, specifically a kind of powder body material spontaneous polarization performance test macro.
Background technology
The natural minerals with spontaneous polarization effect can be widely used in environment and health field, rationally, that this property quantification of efficiency utilization mineral characterizes its spontaneous polarization strength is particularly important, and existing measuring technology only characterizes the power of mineral material spontaneous polarization effect by female spy's test; In addition, the electrochemical process that Japanese scholars Kubo proposes, be that the spontaneous polarization strength of slope to material by calculating electrical conductivity of solution change curve in time characterizes, but powder effects of ion concentration, ionic adsorption, Ion release etc. can affect the accuracy of test result; Disclosed in Chinese patent ZL201210078407.7, tourmaline powder material spontaneous polarization performance proving installation adopts charged conversion ratio juris, this device is provided with heating element in sample chamber, top, sample chamber is provided with temperature element, measuring and controlling temp device is connected with heating element, need during test to heat sample, there is pyroelectric effect interference, make test result inaccurate; In addition, the patent No. device for testing electric polarity of powder material and method of testing thereof disclosed in the Chinese patent of ZL200910228970.6 adopt electric field poling principle, this device is made up of voltage input device, temperature control equipment, sample bearing device and charge detection output unit, the interference of extra electric field is there is during test, can produce a very large impact test result, make test result inaccurate, and the test duration that test process needs is long.
Utility model content
For the deficiencies in the prior art, the technical matters that the utility model quasi-solution is determined is: provide a kind of powder body material spontaneous polarization performance test macro.This test macro is used to the spontaneous polarization strength testing powder body material, and test system structure is simple, easy to operate, fast and effeciently can test the spontaneous polarization performance of powder body material, substantially increase the precision of test result.
The utility model solve the technical problem taked technical scheme: provide a kind of powder body material spontaneous polarization performance test macro, comprise motor, charged converter, digital voltmeter and computing machine, it is characterized in that this test macro also comprises electric charge collecting unit, motor, electric charge collecting unit, charged converter, digital voltmeter is connected successively with computing machine, described electric charge collecting unit comprises coupling shaft axle storehouse, sample chamber bottom magnetic pole, built-in positive plate, sample lid, collector ring, sample chamber, built-in negative plate, sample chamber upper magnetic pole, insulation shell and right cylinder, described sample chamber is hold the annular groove processed to its lower end on the cylinder, and its top is uncovered, bottom is the sealing end, and the internal diameter of sample chamber is provided with built-in positive plate, and external diameter is provided with built-in negative plate, described insulation shell is the cylindrical shape of lower openings, sample lid, right cylinder and sample chamber bottom magnetic pole are housed from top to bottom in insulation shell inside, sample lid lid on the cylinder, sample chamber bottom magnetic pole is positioned at cylindrical bottom, sample chamber bottom magnetic pole is the round pole of middle with hole, and the motor shaft of motor is connected with coupling shaft axle storehouse coaxial threaded through sample chamber bottom magnetic pole, insulation shell lower end is supported on the shell of motor, on the top of insulation shell, sample chamber upper magnetic pole is housed, sample chamber upper magnetic pole is equipped with collector ring, and draw wire respectively by built-in positive plate and built-in negative plate and be connected with collector ring, collector ring is connected with charged converter by wire, described coupling shaft axle storehouse is hollow cylinder, is positioned at cylinder bottom center, with sample chamber concentric.
Compared with prior art, the beneficial effects of the utility model are: the utility model test macro adopts the electric charge collecting unit of designed, designed, test process does not want computer heating control, the sample chamber of electric charge collecting unit is driven to rotate by motor, by sample chamber bottom magnetic pole, the externally-applied magnetic field that the magnetic field intensity that sample chamber lower magnet provides is constant, and the motor to be rotated by uniform angular velocity drives sample chamber to rotate, make moving charge can change direction of motion by Lorentz force in magnetic field, to make in rambling electric charge short time of being produced by spontaneous polarization forward, and move to pole plate direction, electric charge is collected by collector ring, reach the object of collecting spontaneous polarisation charge to greatest extent, achieve the quick and precisely test to powder sample spontaneous polarization strength.
The utility model test macro simplifies the method for testing of powder body material spontaneous polarization performance, shortens the test duration of spontaneous polarization strength, the average used time 30min of test process.For different grain size, different types of test sample, under repeated condition, the absolute value of the difference of twice measurement result is less than or equal to 8.199 × 10-with the scope that do not exceed of fiducial probability of 95%
6c/m
2.The utility model structure is simple, easy to operate, can the spontaneous polarization performance of Validity Test powder body material, greatly improves the precision of test result.
Accompanying drawing explanation
Fig. 1 is the one-piece construction block diagram of a kind of embodiment of the utility model powder body material spontaneous polarization performance test macro.
Fig. 2 is the cut-open view of the electric charge collecting unit 2 of a kind of embodiment of the utility model powder body material spontaneous polarization performance test macro.
In figure, 1. motor; 2. electric charge collecting unit; 3. charged converter; 4. digital voltmeter; 5. computing machine; 201. coupling shaft axle storehouses; 202. sample chamber bottom magnetic pole; 203. built-in positive plates; 204. sample lids; 205. collector ring; 206. sample chamber; 207. built-in negative plates; 208. sample chamber upper magnetic poles; 209. insulation shell; 210. right cylinder.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but not in this, as the restriction to the application's claims.
The utility model powder body material spontaneous polarization performance test macro (is called for short test macro, see Fig. 1-2) comprise motor 1, electric charge collecting unit 2, charged converter 3, digital voltmeter 4 and computing machine 5, motor 1, electric charge collecting unit 2, charged converter 3, digital voltmeter 4 is connected successively with computing machine 5, described electric charge collecting unit 2 comprises coupling shaft axle storehouse 201, sample chamber bottom magnetic pole 202, built-in positive plate 203, sample lid 204, collector ring 205, sample chamber 206, built-in negative plate 207, sample chamber upper magnetic pole 208, insulation shell 209 and right cylinder 210, described sample chamber 206 is the annular groove processed to its lower end in right cylinder 210 upper end, and its top is uncovered, bottom is the sealing end, and the internal diameter of sample chamber 206 is provided with built-in positive plate 203, and external diameter is provided with built-in negative plate 207, described insulation shell 209 is the cylindrical shape of lower openings, in insulation shell 209 inside, sample lid 204, right cylinder 210 and sample chamber bottom magnetic pole 202 are housed from top to bottom, sample lid 204 covers on right cylinder 210, sample chamber bottom magnetic pole 202 is positioned at the bottom of right cylinder 210, sample chamber bottom magnetic pole 202 is the round pole of middle with hole, and the motor shaft of motor 1 is connected with coupling shaft axle storehouse 201 coaxial threaded through sample chamber bottom magnetic pole 202, insulation shell 209 lower end is supported on the shell of motor 1, on the top of insulation shell 209, sample chamber upper magnetic pole 208 is housed, collector ring 205 sample chamber upper magnetic pole 208 is equipped with, draw wire respectively by built-in positive plate 203 and built-in negative plate 207 to be connected with collector ring 205, collector ring 205 is connected with charged converter 3 by wire, described coupling shaft axle storehouse 201 is hollow cylinder, is positioned at place of right cylinder 210 bottom centre, with sample chamber 206 concentric.
The diameter ratio being further characterized in that described built-in negative plate 207 and built-in positive plate 203 of the present utility model is 1.1-1.3; The diameter ratio of described coupling shaft axle storehouse 201 diameter and built-in positive plate 203 is 0.16-0.22, and described insulation shell 209 and built-in positive plate 203 diameter are than being 1.7-2.0.
Of the present utility modelly be further characterized in that the material of described right cylinder 210 is teflon, diameter is 40 ~ 45mm, height is 50 ~ 56mm; The degree of depth of described sample chamber 206 groove is 40 ~ 45mm, described sample lid 204 and the same diameter of right cylinder 210; The degree of depth in described coupling shaft axle storehouse 201 is 10 ~ 12mm, and described insulation shell 209 diameter is 55 ~ 60mm, so arranges and can make electric charge collecting unit 2 more reasonable structure, is conducive to the precision improving test result.
Of the present utility modelly be further characterized in that described sample chamber bottom magnetic pole 202 and sample chamber upper magnetic pole 208 are equal-sized ring-shaped magnet, its external diameter is 45 ~ 50mm, internal diameter is 10 ~ 12mm, be highly 8 ~ 10mm, sample chamber upper magnetic pole 208 lower surface directly contacts with insulation shell 209 upper surface, and sample chamber lower magnet 202 upper surface directly contacts with cylinder bottom; Described collector ring 205 is hat type collector ring, and external diameter is 15mm.
Of the present utility modelly be further characterized in that described built-in positive plate 203 and built-in negative plate 207 material are conducting metal membrane material, it can be aluminium foil, on the internal diameter respectively aluminium foil being bonded at sample chamber 206 and on external diameter, form two electrodes of sample chamber, the electric charge collected transfers to charged converter 3 by wire, collector ring 205 again.
In embodiment shown in Fig. 1, the utility model powder body material spontaneous polarization performance test macro comprises motor 1, electric charge collecting unit 2, charged converter 3, digital voltmeter 4 and computing machine 5, electric charge collecting unit 2 is connected with motor 1 by motor reel, electric charge collecting unit 2 is connected with collector ring 205 by wire with built-in negative plate 207 by built-in positive plate 203, collector ring 205 is connected with charged converter 3 by wire again, charged converter 3 adopts data line to be connected with digital voltmeter 4, and digital voltmeter 4 adopts data line to be connected with computing machine 5.
In embodiment shown in Fig. 2, the electric charge collecting unit 2 in the utility model powder body material spontaneous polarization performance test macro comprises coupling shaft axle storehouse 201, sample chamber bottom magnetic pole 202, built-in positive plate 203, sample lid 204, collector ring 205, sample chamber 206, built-in negative plate 207, sample chamber upper magnetic pole 208, insulation shell 209 and right cylinder 210; Described sample chamber 206 is the annular groove processed to its lower end in right cylinder 210 upper end, and its top is uncovered, bottom is the sealing end; Coupling shaft axle storehouse 201 is hollow cylinder, is positioned at place of right cylinder 210 bottom centre, with sample chamber 206 concentric; Sample chamber bottom magnetic pole 202 is provided with in the bottom of right cylinder 210, sample chamber bottom magnetic pole 202 is circular, internal diameter is greater than coupling shaft axle storehouse 201 diameter, external diameter is less than insulation shell 209, the motor shaft of motor 1 is connected with coupling shaft axle storehouse 201 coaxial threaded through sample chamber bottom magnetic pole 202, sample chamber bottom magnetic pole 202 is fixed on the upper surface of outer cover of motor 1; Built-in positive plate 203 is the conductive metal film of coating or the internal diameter sticking to sample chamber 206, built-in negative plate 207 is the conductive metal film of coating or the external diameter sticking to sample chamber 206, and the internal diameter of sample chamber 206 described here and external diameter be the cylindrical side of the internal diameter formation of the sample chamber of finger ring shape groove and the cylindrical side of external diameter formation respectively; Sample lid 204 is placed in open top place, sample chamber 206, and closely engages with it; Insulation shell 209 is cylindric, and right cylinder 210 and sample lid 204 can wrap up wherein by its inversion, are supported by the upper surface of outer cover of motor 1.Sample chamber upper magnetic pole 208 is identical with sample chamber bottom magnetic pole 202 shape, is supported by insulation shell 209, places with sample chamber 206 concentric.Collector ring 205 and sample chamber 206 concentric, be placed on sample chamber upper magnetic pole 208, the wire of being drawn by built-in positive plate 203 and built-in negative plate 207 is connected with collector ring 205, and collector ring 205 is connected with charged converter 3 by corresponding wire again.
The workflow of system software during the utility model test is: and whether start-up routine → setting initial parameter → start test → displayed value stablize → and no returning start to test → be data analysis and calculating → provide sample spontaneous polarization strength value → test end.
The principle of work of the utility model powder body material spontaneous polarization performance test macro is: powder to be measured (particle size range 1 ~ 10 μm) sample is put into the sample chamber 206 being placed in externally-applied magnetic field, under the drive of motor 1, allow sample chamber 206 rotate with constant angular velocity ω, the spontaneous polarization electronics that powder produces under spontaneous polarization effect is at the move under influence of Lorentz force, relative to sample chamber radially-inwardly, get on built-in negative plate 207, corresponding built-in positive plate 203 then shows positive electricity.The charge signal collected is transferred to the input end of charged converter 3, through the charged conversion of charged converter 3 and the amplification of integrating amplification circuit, obtain output voltage U
0.Computing formula from the powder quantity of electric charge:
Q＝Ps·A(1)
In formula: Q-polarization charge total amount, unit is C; P
s-spontaneous polarization strength, unit is C/m
2; A-polar plate area, unit is m
2.
Capacitor plate electric charge in integrating amplification circuit:
Q＝C·U
0(2)
In formula: C-electric capacity, unit is F; U
0-output voltage, unit is V.
Arrangement (1), (2) two formulas can obtain powder body material spontaneous polarization strength P
scomputing formula be:
In formula (3), C, A are known quantity, can obtain from test macro parameter.The output voltage U shown by digital voltmeter 4 obtained will be tested
0bring the spontaneous polarization strength P that formula (3) can obtain tourmaline powder into
s.Adopt said method can realize the quick and precisely test of powder body material spontaneous polarization strength.
During use, concrete test operating procedure is as follows:
(1) whether the connecting line between checkout various parts connects correctly.
(2) satisfactory for particle diameter sample is loaded sample chamber 206, make sample and built-in positive plate 203, built-in negative plate 207 close contact, by sample lid 204 compacting.Afterwards insulation shell 209 is covered on right cylinder 210, again sample chamber upper magnetic pole 208 is put on insulation shell 209 afterwards.Collector ring 205 is inserted on sample chamber upper magnetic pole 208.
(3) charged converter 3 is reset.
(4) connect motor 1 power supply, adjust angular velocity of rotation ω, make motor 1 drive sample chamber 206 to rotate.Now observe digital voltmeter 4 reading, when its displayed value is stablized, record respective value.
(5) according to formula
computing machine 1 can provide the spontaneous polarization strength P of sample
s.
(6) after test terminates, cut off the electricity supply, when 206 transfixion of sample chamber, remove sample, cleaning sample chamber 206, ready to be reused.
Innovation of the present utility model is the design of electric charge collecting unit 2, connected mode about motor 1, electric charge collecting unit 2, charged converter 3, digital voltmeter 4, computing machine 5 is applicable to prior art, system software in computing machine 5, can be used for input setup parameter and data acquisition and processing (DAP), it comprises program software able to programme.Components and parts involved by the utility model are all known commercially available prod, do not address part and are all applicable to prior art.
Embodiment 1
By the utility model powder body material spontaneous polarization performance test macro of above-mentioned Fig. 1, installation embodiment illustrated in fig. 2, be teflon by material, diameter is 40mm, the high right cylinder 210 for 50mm, process to its lower end from right cylinder upper end internal diameter be 30mm, wide for 3mm, the degree of depth be the groove of 40mm, this groove is sample chamber 206, top, sample chamber is uncovered, bottom is the sealing end, and the diameter ratio of built-in negative plate 207 and built-in positive plate 203 is 1.2; Coupling shaft axle storehouse 201 is positioned at right cylinder 210 lower end base center, and with sample chamber 206 concentric, employing is thread through sample chamber bottom magnetic pole 202 and is coaxially connected with motor 1, and coupling shaft axle storehouse 201 degree of depth is 10mm, and diameter is 5mm; Built-in positive plate 203 is for being coated in the aluminium foil on the internal diameter of sample chamber 206, and built-in negative plate 207 is for being coated in the aluminium foil on the external diameter of sample chamber 206; Sample lid 204 is placed in open top place, sample chamber 206, and closely engages with sample chamber; Insulation shell 209 is the cylinder of material PET, diameter 55mm, high 59mm, and right cylinder 210 and sample lid 204 can wrap up wherein by its inversion.Sample chamber bottom magnetic pole 202 is external diameter 45mm, internal diameter 10mm, highly for the circular magnet of 8mm, the motor shaft of motor 1 is connected with coupling shaft axle storehouse 201 coaxial threaded through sample chamber bottom magnetic pole 202, and is supported by the upper surface of outer cover of motor 1.Sample chamber upper magnetic pole 208 is the material identical with the size of sample chamber bottom magnetic pole 202 and shape, is supported by insulation shell 209, places with sample chamber 206 concentric.Collector ring 205 is hat type collector ring, and external diameter is 15mm, and with sample chamber 206 concentric, be placed in sample chamber upper magnetic pole 208 upper surface, collector ring 205 is connected with built-in positive plate 203, built-in negative plate 207 and charged converter 3 respectively by wire.
Embodiment 2
By the utility model powder body material spontaneous polarization performance test macro of above-mentioned Fig. 1, installation embodiment illustrated in fig. 2, be teflon by material, diameter is 43mm, the high right cylinder 210 for 53mm, process to its lower end from right cylinder upper end internal diameter be 31mm, wide for 4mm, the degree of depth be the groove of 43mm, this groove is sample chamber 206, and top, sample chamber is uncovered, bottom is the sealing end; Coupling shaft axle storehouse 201 is positioned at right cylinder 210 lower end base center, and with sample chamber 206 concentric, employing is thread through sample chamber bottom magnetic pole 202 and is coaxially connected with motor 1, and coupling shaft axle storehouse 201 degree of depth is 11mm, and diameter is 6mm; Built-in positive plate 203 is for being coated in the aluminium foil on the internal diameter of sample chamber 206, and built-in negative plate 207 is for being coated in the aluminium foil on the external diameter of sample chamber 206; Sample lid 204 is placed in open top place, sample chamber 206, and closely engages with sample chamber; Insulation shell 209 is the cylinder of material PET, diameter 57mm, high 60mm, and right cylinder 210 and sample lid 204 can wrap up wherein by its inversion.Sample chamber bottom magnetic pole 202 is external diameter 48mm, internal diameter 11mm, height is the circular magnet of 9mm, and the motor shaft of motor 1 is connected with coupling shaft axle storehouse 201 coaxial threaded through sample chamber bottom magnetic pole 202, and is supported by the upper surface of outer cover of motor 1.Sample chamber upper magnetic pole 208 is the material identical with the size of sample chamber bottom magnetic pole 202 and shape, is supported by insulation shell 209, places with sample chamber 206 concentric.Collector ring 205 is hat type collector ring, and external diameter is 15mm, with sample chamber 206 concentric, is placed in sample chamber upper magnetic pole 208 upper surface, is connected respectively by wire with built-in positive plate 203, built-in negative plate 207 and charged converter 3.
Embodiment 3
By the utility model powder body material spontaneous polarization performance test macro of upper Fig. 1, installation embodiment illustrated in fig. 2, be teflon by material, diameter is 45mm, the high right cylinder 210 for 56mm, process to its lower end from right cylinder upper end internal diameter be 32mm, wide for 4.5mm, the degree of depth be the groove of 45mm, this groove is sample chamber 206, and top, sample chamber is uncovered, bottom is the sealing end; Coupling shaft axle storehouse 201 is positioned at right cylinder 210 lower end base center, and with sample chamber 206 concentric, employing is thread through sample chamber bottom magnetic pole 202 and is coaxially connected with motor 1, and coupling shaft axle storehouse 201 degree of depth is 12mm, and diameter is 7mm; Built-in positive plate 203 is for being coated in the aluminium foil on the internal diameter of sample chamber 206, and built-in negative plate 207 is for being coated in the aluminium foil on the external diameter of sample chamber 206; Sample lid 204 is placed in open top place, sample chamber 206, and closely engages with sample chamber; Insulation shell 209 is the cylinder of material PET, diameter 60mm, high 65mm, and right cylinder 210 and sample lid 204 can wrap up wherein by its inversion.Sample chamber bottom magnetic pole 202 is external diameter 50mm, internal diameter 12mm, highly for the circular magnet of 10mm, the motor shaft of motor 1 is connected with coupling shaft axle storehouse 201 coaxial threaded through sample chamber bottom magnetic pole 202, and is supported by the upper surface of outer cover of motor 1.Sample chamber upper magnetic pole 208 is the material identical with the size of sample chamber bottom magnetic pole 202 and shape, is supported by insulation shell 209, places with sample chamber 206 concentric.Collector ring 205 is hat type collector ring, and external diameter is 15mm, and with sample chamber 206 concentric, be placed in sample chamber upper magnetic pole 208 upper surface, collector ring 205 is connected with built-in positive plate 203, built-in negative plate 207 and charged converter 3 respectively by wire.
Embodiment 4
Powder sample 1 is tested according to concrete test operating procedure with the test macro described in embodiment 1.
The tested powder sample 1 chosen is for originating from the tourmaline powder in ore deposit, Hebei.
(1) whether the connecting line between checkout various parts connects correctly;
(2) respectively collector ring 205, sample chamber upper magnetic pole 208 and insulation shell 209 are taken off;
(3) sample lid 204 is opened, by the particle diameter D after grinding
50=1.76 μm of samples 1 load in sample chamber 206, make sample 1 and the built-in positive plate in sample chamber 206 203 and built-in negative plate 207 close contact, by sample lid 204 compacting.Put into insulation shell 209, sample chamber upper magnetic pole 208 and collector ring 205 afterwards successively.
(3) charged converter 3 is reset.
(4) connect motor 1 power supply, adjust angular velocity of rotation ω=83.76rad/s, make motor 1 drive sample chamber 206 to rotate.Now observed number word voltage meter reading, when its displayed value is stablized, records respective value.
(5) according to formula
computing machine 1 can provide the spontaneous polarization strength P of sample
s=-2.278 × 10
-4c/m
2
(6) after test terminates, cut off the electricity supply, when 206 transfixion of sample chamber, remove sample, cleaning sample chamber 206, ready to be reused.
Embodiment 5
Tested powder sample 2 is tested according to concrete test operating procedure with the test macro described in embodiment 2.
The sample 2 chosen for originating from the tourmaline powder in ore deposit, Shandong, particle diameter D
50=1.35 μm, angular velocity of rotation ω=83.76rad/s.After test terminates, computing machine 5 provides the spontaneous polarization strength P of tested powder sample 2
sfor-3.204 × 10
-4c/m
2.
Repeatability analysis is carried out to embodiment 4 and embodiment 5, repeatability r is defined as: under identical measuring condition, namely identical process of measurement, identical observer, uses identical surveying instrument, measures consistance between acquired results in identical place, in the short time to same measured continuous several times of carrying out.
Under repeated condition, due to the impact of stochastic error, measurement result has discreteness, and the probability be dispersed in certain interval is called fiducial probability, the absolute value of the difference of twice measurement result with 95% the unlikely scope definition exceeded of fiducial probability for repeatability limit, logical conventional sign p represents.When measurement result Normal Distribution, when getting fiducial probability p=95%, the computing formula of repeated r is:
In formula, v is the degree of freedom v=n-1 of repeatability; t
0.95v tables of critical values that the value of () can be distributed by T-checks in; P
siit is the test value of spontaneous polarization strength; N is testing time;
it is testing mean.
Under repeated condition, to the same sample of embodiment 4 do 10 times test the results are shown in Table 1:
Same sample 10 test result (C/m of table 1 embodiment 4
2)
When testing time is n=10, v=9, checks in t by T-distribution tables of critical values
0.95v ()=2.26, substitute in the computing formula of repeated r, calculate repeated r and obtain:
It can thus be appreciated that: no matter the granularity of test sample, type are how, and under repeated condition, the absolute value of the difference of twice measurement result is less than or equal to 8.199 × 10 with the unlikely scope exceeded of fiducial probability of 95%
-6c/m
2, the spontaneous polarization strength numerical value of the powder body material obtained by the utility model test macro is described accurately and reliably, reproducible.
When adopting the spontaneous polarization strength of the utility model test system and test powder body material, because system can realize by sample chamber bottom magnetic pole, the externally-applied magnetic field that the magnetic field intensity that sample chamber lower magnet provides is constant, and the motor to be rotated by uniform angular velocity drives sample chamber to rotate, make moving charge can change direction of motion by Lorentz force in magnetic field, to make in rambling electric charge short time of being produced by spontaneous polarization forward, and move to pole plate direction, reach the object of collecting spontaneous polarisation charge to greatest extent, achieve the quick and precisely test to powder sample spontaneous polarization strength.It is 30min that embodiment 4 or embodiment 5 test the overall process average used time.For different grain size, different types of test sample, under repeated condition, the absolute value of the difference of twice measurement result is less than or equal to 8.199 × 10 with the unlikely scope exceeded of fiducial probability of 95%
-6c/m
2.The utility model test result is accurate, and the used time is short.
There is the deficiency of the disturbing effect of extra electric field and pyroelectric effect in the utility model, the mineral material for efficiency utilization with spontaneous polarization effect provides Performance Test System when overcoming electric field poling and the test of charged transformation approach of prior art employing.The utility model is also applicable to universities and colleges' scientific research and experimental teaching uses equipment.
The utility model is not addressed part and is applicable to prior art.
Claims (3)
1. a powder body material spontaneous polarization performance test macro, comprise motor, charged converter, digital voltmeter and computing machine, it is characterized in that this test macro also comprises electric charge collecting unit, motor, electric charge collecting unit, charged converter, digital voltmeter are connected successively with computing machine, and described electric charge collecting unit comprises coupling shaft axle storehouse, sample chamber bottom magnetic pole, built-in positive plate, sample lid, collector ring, sample chamber, built-in negative plate, sample chamber upper magnetic pole, insulation shell and right cylinder; Described sample chamber is hold the annular groove processed to its lower end on the cylinder, and its top is uncovered, bottom is the sealing end, and the internal diameter of sample chamber is provided with built-in positive plate, and external diameter is provided with built-in negative plate; Described insulation shell is the cylindrical shape of lower openings, sample lid, right cylinder and sample chamber bottom magnetic pole are housed from top to bottom in insulation shell inside, sample lid lid on the cylinder, sample chamber bottom magnetic pole is positioned at cylindrical bottom, sample chamber bottom magnetic pole is the round pole of middle with hole, and the motor shaft of motor is connected with coupling shaft axle storehouse coaxial threaded through sample chamber bottom magnetic pole; Insulation shell lower end is supported on the shell of motor, on the top of insulation shell, sample chamber upper magnetic pole is housed, sample chamber upper magnetic pole is equipped with collector ring, and draw wire respectively by built-in positive plate and built-in negative plate and be connected with collector ring, collector ring is connected with charged converter by wire; Described coupling shaft axle storehouse is hollow cylinder, is positioned at cylinder bottom center, with sample chamber concentric.
2. powder body material spontaneous polarization performance test macro according to claim 1, is characterized in that the diameter of described built-in negative plate and built-in positive plate than being 1.1-1.3; The diameter ratio of described coupling shaft axle storehouse diameter and built-in positive plate is 0.16-0.22, and described insulation shell and built-in positive plate diameter are than being 1.7-2.0.
3. powder body material spontaneous polarization performance test macro according to claim 1, it is characterized in that described cylindrical material is teflon, diameter is 40 ~ 45mm, height is 50 ~ 56mm; The degree of depth of described sample chamber groove is 40 ~ 45mm, described sample lid and the same diameter of right cylinder; The degree of depth in described coupling shaft axle storehouse is 10 ~ 12mm, and described insulation shell diameter is 55 ~ 60mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521011282.1U CN205193185U (en) | 2015-12-08 | 2015-12-08 | Powder material spontaneous polarization capability test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521011282.1U CN205193185U (en) | 2015-12-08 | 2015-12-08 | Powder material spontaneous polarization capability test system |
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| Publication Number | Publication Date |
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| CN205193185U true CN205193185U (en) | 2016-04-27 |
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ID=55786164
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372535A (en) * | 2015-12-08 | 2016-03-02 | 河北工业大学 | Powder material spontaneous polarization performance test system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372535A (en) * | 2015-12-08 | 2016-03-02 | 河北工业大学 | Powder material spontaneous polarization performance test system |
| CN105372535B (en) * | 2015-12-08 | 2017-11-14 | 河北工业大学 | Powder body material spontaneous polarization performance test system |
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