CN102023121A - Petroleum hydrometer calibration device and method - Google Patents
Petroleum hydrometer calibration device and method Download PDFInfo
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- CN102023121A CN102023121A CN 201010539387 CN201010539387A CN102023121A CN 102023121 A CN102023121 A CN 102023121A CN 201010539387 CN201010539387 CN 201010539387 CN 201010539387 A CN201010539387 A CN 201010539387A CN 102023121 A CN102023121 A CN 102023121A
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- 239000003208 petroleum Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 110
- 239000011521 glass Substances 0.000 claims abstract description 28
- 210000004027 cell Anatomy 0.000 claims description 26
- 230000033228 biological regulation Effects 0.000 claims description 21
- 210000005056 cell body Anatomy 0.000 claims description 18
- 238000009434 installation Methods 0.000 claims description 12
- 238000012937 correction Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 7
- 230000006641 stabilisation Effects 0.000 claims description 5
- 238000011105 stabilization Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 10
- 238000005259 measurement Methods 0.000 description 8
- 238000000326 densiometry Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000002706 hydrostatic effect Effects 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- 241001347978 Major minor Species 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 238000001739 density measurement Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 230000005499 meniscus Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
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Abstract
The invention relates to the technical field of the detection and the calibration of a hydrometer, in particular to a calibration device and method for calibrating a petroleum hydrometer. The calibration device comprises a fixed mount, a thermostatic bath and a scale, wherein the thermostatic bath is arranged in the fixed mount, the scale is arranged on the top surface of the fixed mount, a lifting rope is arranged below the scale, a glass measuring cylinder is arranged in the thermostatic bath, the glass measuring cylinder comprises a main measuring cylinder and an auxiliary measuring cylinder, the main measuring cylinder is communicated with the auxiliary measuring cylinder by a liquid level regulating device, and a thermometer is arranged in the main measuring cylinder. The invention realizes the switching among different calibration marking points of the hydrometer based on the vertical movement of the liquid level of the reference liquid, so that the liquid level of the reference liquid can be tangential to the required calibration marking point, thereby meeting the calibration requirements of the hydrometer, filling in the gap that a low-range petroleum hydrometer can not be calibrated, expanding the calibration range of the petroleum hydrometer, improving the calibration automation degree, enhancing the calibration efficiency, reducing the measuring error and improving the calibration uncertainty level.
Description
Technical field:
The densitometric detection collimation technique of the present invention field is specifically related to a kind of calibrating installation and method that petroleum densitmeter is calibrated.
Background technology:
Density is an important physical amount that characterizes substance characteristics.Density measure research to various physical properties in subjects such as physics, chemistry, metrology, thalassography plays an important role, it relates to the various fields of national economy such as oil, chemical industry, metallurgy, building materials, light industry, trade, coal, medical treatment, and the application in numerous industrial sectors is very extensive.Therefore no matter still be the viewpoint of technology from economy, densitometry all has very important meaning accurately.In order to guarantee the consistance of fluid density value, China has set up fluid density standard apparatus based on the hydrostatic weighing method in nineteen sixty-five, this benchmark adopts the hydrostatic weighing method that the density value is copied on the benchmark densitometer, carry out transmission of quantity value by the benchmark densitometer, its key technical indexes: measurement range: (650～3000) kg/m
3Uncertainty: (7～20) * 10
-3Kg/m
3(comprising factor k=3).
Densitometer is mainly used in the measurement of density, is widely used in aspects such as trade settlement, environmental monitoring, and is closely bound up with the national economic development, therefore is put into " the working measuring instrument catalogue of People's Republic of China's compulsory verification ".Densitometer must be through legal measurement verification before coming into operation.
The glass overstatement is modal density measuring instruments, is applicable to the measurement of fluid density.Be calibrating glass overstatement, China formulates glass overstatement vertification regulation JJG86-2001 and JJG42-2001, and what adopt in the rules is that direct comparison method is carried out densitometric calibrating.Along with development of science and technology petrochemical complex industrial expansion particularly, increasing special-purpose densitometer begins to be widely used.Common have petroleum densitmeter and a liquefied petroleum gas (LPG) densitometer.Petroleum densitmeter is exclusively used in the density that detects oil and petroleum products, is widely used in petroleum chemical industry, and its measurement range is (600～1100) kg/m
3, liquefied petroleum gas (LPG) densimeter measurement scope is (500～650) kg/m
3Yet these two rules of existing JJG86-2001 and JJG42-2001 all are not suitable for density measurement less than 650kg/m
3Petroleum densitmeter and the densitometric calibrating of liquefied petroleum gas (LPG), this is owing to still do not have density less than 650kg/m at present
3And due to the density stabilized calibrating liquid.Even if for density greater than 650kg/m
3Conventional densitometric measurement, direct comparison method also exists need to change different calibrating liquid, inefficiency, drawback such as subjective and objective error is bigger, and uncertainty is bigger.
Domestic calibrating to the glass overstatement mainly is to adopt direct comparison method to carry out according to national metrological verification regulations JJG86-2001 and JJG42-2001, promptly directly compares with normal glass overstatement and tested glass overstatement.There is himself defective in this calibration method, is summarized as follows:
1. when isolabeling is not examined and determine to the glass overstatement, need to change the calibrating liquid of different densities; And the calibrating liquid that uses at present mostly is poisonous inflammable organic solution.
2. can't examine and determine the lower range density measurement less than 650kg/m
3) the glass overstatement because do not find density stabilized calibrating liquid so far as yet.
For density less than 650kg/m
3The calibrating of glass overstatement, domestic also have some units to use static(al) weighing methods to do some useful trials, but ubiquity is when calibrating the different collimating marks of glass overstatement, need manually lift lifting rope, troublesome poeration, labor intensive is bigger, the shortcoming that work efficiency is low.
Summary of the invention:
In sum, in order to overcome the deficiency of prior art problem, the invention provides a kind of petroleum densitmeter calibrating installation and method, this calibrating installation treats that by accurate weighing the school densitometer is in air and with reference to the quality in the liquid, and then calculate the theoretical value for the treatment of the densitometric collimating marks point in school, and then calculate the modified value of this collimating marks point.The calibrating for the treatment of the different collimating marks points of school densitometer then mainly realizes with reference to the liquid level of liquid by changing.Whole device is made of equipment such as calibration cell, balance, liquid level regulation apparatus, camera head, computing machines.This calibration steps is a ultimate principle with the hydrostatic weighing method, realize densitometer is carried out Calibration Method with reference to liquid by changing different densities in traditional direct comparison method of having forgone, but only use reference liquid stable under a kind of normal temperature, it is to rely on reference to moving up and down of liquid liquid level to realize treating mutual switching between the densitometric different collimating marks point in school, thereby make with reference to the liquid liquid level tangent with the collimating marks point that needs, and then satisfy the needs of densitometer calibration, simultaneously, calculate the solid density of collimating marks point by formula, and then compare with treating the densitometric actual read number in school, calculate at last and treat the densitometric calibration correction value in school, and then fill up the blank that the lower range petroleum densitmeter can't be calibrated, also expanded simultaneously the calibrating scope of glass overstatement, improve the calibrating automaticity, reduced assay calibration result's uncertainty.
For solving the problems of the technologies described above, technical scheme of the present invention is achieved in that
A kind of petroleum densitmeter calibrating installation, it comprises fixed mount, calibration cell and balance, calibration cell is arranged in the fixed mount, the end face of fixed mount is provided with balance, and balance is arranged with lifting rope, wherein: be provided with glass cylinder in the described calibration cell, described glass cylinder comprises main graduated cylinder and auxilliary graduated cylinder, main graduated cylinder is communicated with auxilliary graduated cylinder by liquid level regulation apparatus, is provided with thermometer in the main graduated cylinder, and thermometer, liquid level regulation apparatus, balance and calibration cell all are connected with computing machine.
Technical scheme of the present invention can also be achieved in that described liquid level regulation apparatus is two vacuum pumps, control circuit, and the inlet of a vacuum pump is communicated with main graduated cylinder, and liquid outlet is communicated with auxilliary graduated cylinder; The inlet of another vacuum pump is communicated with auxilliary graduated cylinder, and liquid outlet is communicated with main graduated cylinder.
Technical scheme of the present invention can also be achieved in that described calibration cell comprises base, cell body, motor, stirrer, well heater and refrigerator, cell body is arranged on the base, cell body comprises inside groove and water jacket, glass cylinder is arranged in the inside groove, and inside groove is arranged in the water jacket, is the fluid passage between inside groove and the water jacket, under the cell body stirrer is set, motor is arranged in the base, and motor is connected with stirrer, and cell body is provided with well heater and refrigerator.
Technical scheme of the present invention can also be achieved in that described fixed mount is provided with lighting device, and the height of lighting device is corresponding with the height of glass cylinder.
Technical scheme of the present invention can also be achieved in that described fixed mount is provided with camera head, and camera head is connected with computing machine.
Utilize the petroleum densitmeter calibrating installation that petroleum densitmeter is carried out Calibration Method to be: it may further comprise the steps:
A, selection are with reference to liquid, reference density meter, thermostatic medium;
B, will fill with reference to the glass cylinder of liquid and put into calibration cell, start calibration cell, treat that the thermostatic medium temperature stabilization begins to treat the school densitometer and calibrates in the time of 20 ± 0.01 ℃;
C, at first weigh with scale and treat the aerial quality m of school densitometer
Empty, and record the dry tube diameter D that treats densitometric each the collimating marks point in school, and give and treat that the school densitometer encloses counterweight and hang in the balance lower end by lifting rope with milscale, the reference density meter to be put into reference in the liquid, start-up temperature is taken into account camera head;
D, start liquid level regulation apparatus, the liquid level of the reference liquid in the main graduated cylinder risen, the height for the treatment of liquid level in the main graduated cylinder with treat that densitometric lower end, school collimating marks point is concordant after, stop liquid level regulation apparatus;
E, read m from balance
Balance, read t from thermometer, read the reading ρ of reference density meter from the image of camera head collection
LiquidWith treat the densitometric reading ρ in school
Real, according to formula:
In the formula, ρ
Liquid---in the time of 20 ℃, with reference to the density of liquid, g/cm
3
ρ
Empty---air density values, get 0.0012g/cm
3
α
Liquid---in the time of 20 ℃, with reference to the surface tension coefficient of liquid, mN/m;
α
1---the surface tension coefficient of real work liquid, calculate mN/m by capillary constant;
m
Join---counterweight quality in a vacuum, g;
m
Balance---treat the quality of school densitometer in reference liquid, g;
m
Empty---treat school densitometer quality in a vacuum, g;
V
Join---the volume of counterweight, cm
3
D---treat the diameter of school densitometer main, mm at the calibrating point;
Calculate and treat the school densitometer solid density of collimating marks point bottom, then according to formula:
Δ ρ=ρ
Real-ρ
Reason
ρ
Real---treat the densitometric reading in school, g/cm
3
Calculate and treat school densitometer collimating marks point calibration correction value Δ ρ bottom;
F, startup liquid level regulation apparatus, the liquid level of the reference liquid in the main graduated cylinder is risen, repeating step d, e, treat the collimating marks point and the collimating marks point topmost of densitometric centre, school successively and calibrate, draw the calibration correction value for the treatment of the densitometric middle collimating marks point in school and the top collimating marks point successively;
G, finish the collimating marks point calibration for the treatment of densitometric the top, school and finish after, take out and treat the school densitometer and clean, repeating step d, e, f treat densitometric each collimating marks point in school and carry out second time calibration then;
H, finish treat the school densitometric second time the calibration after, the twice calibration correction value that compares each collimating marks point, in allowed band, the mean value of then getting them is the modified value of this mark density point as if difference, if difference exceeds allowed band, then need calibration once more;
I, calibration finish, and take out and to treat that school density takes into account the reference density meter, clean up and put well, close equipment such as camera head, thermometer and calibration cell.
Beneficial effect of the present invention is:
1, the present invention has designed first with reference to the liquid liquid level regulation apparatus, density meter calibration is designed to major-minor two graduated cylinders with glass cylinder, to guarantee temperature constant with reference to liquid, the vacuum pump that is communicated with major-minor graduated cylinder is set simultaneously, vacuum pump is controlled by host computer procedure, can realize automatically with reference to the moving up and down of liquid level, and relies on moving up and down of liquid level to realize mutual switching between the densitometric different calibration punctuate, thereby realize calibration, and then need of work to the different calibration points of densitometer.
2, the present invention can carry out density effectively less than 650kg/m
3Petroleum densitmeter and the densitometric calibrating of liquefied petroleum gas (LPG), serve petroleum chemical industry and other industry, guarantee for its development provides metering, can also make the uncertainty of measurement of our existing densitometer and petroleum densitmeter calibration result bring up to 0.12kg/m
3, significantly improve the density measure level, thereby not only can make us aspect density measure, occupy domestic prostatitis, and can integrate with international densitometry, occupy a tiny space in international densitometry field.
3, the present invention arrives the density measure range expansion: (500～3000) kg/m
3, uncertainty of measurement can reach 0.12kg/m
3500kg/m is contained in foundation
3～650kg/m
3Calibrating/the calibration steps of density range is filled up the rules blank in this field;
4, elements such as balance of the present invention, thermometer, vacuum pump, camera head all can be connected with computing machine, control the work of each components and parts by computer-controlled program, improved the automaticity of densitometer calibration, improve calibrating efficient, reduce measuring error, improve the uncertainty level of assay calibration.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Fig. 2 looks synoptic diagram for the left side of Fig. 1 of the present invention;
Fig. 3 is the structural representation of liquid level regulation apparatus of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
As Fig. 1, Fig. 2, shown in Figure 3, a kind of petroleum densitmeter calibrating installation, it comprises fixed mount 2, calibration cell and balance 1, calibration cell is arranged in the fixed mount 2, the end face of fixed mount 2 is provided with balance 1, balance 1 is arranged with lifting rope 3, calibration cell comprises cell body, motor 15, stirrer 14, well heater 8 and controller, cell body comprises inside groove 6 and water jacket 7, inside groove 6 is arranged in the water jacket 7, is the fluid passage between inside groove 6 and the water jacket 7, and motor 15 and stirrer 14 are set under the cell body, cell body is provided with well heater 8 and refrigerator 13, also is provided with sensor on the cell body.Be provided with glass cylinder 4 in the inside groove 6, glass cylinder 4 comprises main graduated cylinder 21 and auxilliary graduated cylinder 20, main graduated cylinder 21 is arranged with main inlet 26 and main liquid outlet 27, auxilliary graduated cylinder 20 is arranged with auxilliary inlet 23 and auxilliary liquid outlet 22, main inlet 26 is communicated with the liquid outlet of first vacuum pump 25, and auxilliary liquid outlet 22 is communicated with the inlet of first vacuum pump 25, and main liquid outlet 27 is communicated with the inlet of second vacuum pump 24, auxilliary inlet 23 is communicated with the liquid outlet of second vacuum pump 24, is provided with thermometer 9 in the main graduated cylinder 21.Also be provided with lighting device 19 on the fixed mount 2, the height of lighting device 19 is corresponding with the height of glass cylinder 4.Camera head 12 also is set on the fixed mount 2.Motor 15, well heater 8 and the refrigerator 13 of balance 1, thermometer 9, first vacuum pump 25, second vacuum pump 24, camera head 12, calibration cell all are connected with computing machine 18 by data line.
When needs promote the liquid level of main graduated cylinder 21 internal reference liquid, open first vacuum pump 25, the reference liquid that first vacuum pump 25 extracts in the auxilliary graduated cylinder 20 is delivered into main graduated cylinder 21 then, thereby the liquid level in the main graduated cylinder 21 is risen, when liquid level reach need height after, close first vacuum pump 25, when the liquid level of main graduated cylinder 21 internal reference liquid need reduce, open second vacuum pump 24, the reference liquid that second vacuum pump 24 extracts in the main graduated cylinder 21 is delivered into auxilliary graduated cylinder 20 then, liquid levels descend in the main graduated cylinder 21 thereby make, when liquid level be reduced to need height after, close second vacuum pump 24.
Reference liquid temp in main graduated cylinder 21 changes, in the time of need making its intensification or cooling, the motor 15 of calibration cell rotates stirrer 14, stirrer 14 with the thermostatic medium of cell body bottom from the fluid passage between inside groove 6 and the water jacket 7, upwards flow to inside groove 6 from inside groove 6 upper ends, thermostatic medium in the inside groove 6 refluxes downwards bottom the return-enclosure body, thereby thermostatic medium is circulated in cell body, cooperate simultaneously well heater 8 or the refrigerator 13 that is provided with on the cell body again, thereby the temperature stabilization that keeps thermostatic medium, and then realize the temperature stabilization of maintenance with reference to liquid.
Balance 1 of the present invention, thermometer 9, first vacuum pump 25, second vacuum pump 24, camera head 12, the motor 15 of calibration cell, well heater 8 and refrigerator 13 all are connected with computing machine 18 by data line, control corresponding software is installed in computing machine 18, thereby control first vacuum pump 25, second vacuum pump 24, the keying of well heater 8 and refrigerator 13, simultaneously, camera head 12 will photograph image information and flow to computing machine 18, amplify by picture, dwindle and system such as moving displacement, observe reference density meter 5 and treat school densitometer 10 the reading situation and with the situation that contacts with reference to liquid level, the personal error that causes when reducing artificial reading as much as possible
In the time will calibrating densitometer, concrete calibration steps is as follows:
A, selection are with reference to liquid, reference density meter 5, thermostatic medium.
B, will be contained with reference to the glass cylinder 4 of liquid and put into calibration cell, open lighting device 19, start calibration cell, treat that the thermostatic medium temperature stabilization begins to treat school densitometer 10 and calibrates in the time of 20 ± 0.01 ℃.
C, at first treat school densitometer 10 aerial quality m with balance 1 weighing
Empty, and record the dry tube diameter D of each collimating marks point for the treatment of school densitometer 10, and give and treat that school densitometer 10 encloses counterweight 11 and hang in balance 1 lower end by lifting rope 3 with milscale, reference density meter 5 is put with reference in the liquid into start-up temperature meter 9 and camera head 12.
D, start liquid level regulation apparatus 17, the liquid level of the reference liquid in the main graduated cylinder 21 is risen, the height for the treatment of liquid levels in the main graduated cylinder 21 stops liquid level regulation apparatus 17 with after the collimating marks point bottom for the treatment of school densitometer 10 is concordant.
Note this moment observing counterweight 11, treating to have or not bubble on school densitometer 10 and the reference density meter 5, whether observe reference density meter 5 simultaneously normal with the meniscus shape of the main for the treatment of school densitometer 10 and liquid level joint, if have bubble or meniscus undesired should clean densitometer again or check whether contaminated with reference to liquid, until no bubble and densitometer and normally tangent with reference to the liquid liquid level.
E, read m from balance 1
Balance, read t from thermometer 9, read the reading ρ of reference density meter 5 from the image of camera head 12 collections
LiquidWith the reading ρ that treats school densitometer 10
Real, according to formula:
In the formula, ρ
Liquid---in the time of 20 ℃, with reference to the density of liquid, g/cm
3
ρ
Empty---air density values, get 0.0012g/cm
3
α
Liquid---in the time of 20 ℃, with reference to the surface tension coefficient of liquid, mN/m;
α
1---the surface tension coefficient of real work liquid, calculate mN/m by capillary constant;
m
Join---counterweight quality in a vacuum, g;
m
Balance---treat the quality of school densitometer in reference liquid, g;
m
Empty---treat school densitometer quality in a vacuum, g;
V
Join---the volume of counterweight, cm
3
D---treat the diameter of school densitometer main, mm at the calibrating point;
Calculate and treat the school densitometer solid density of collimating marks point bottom, then according to formula:
Δ ρ=ρ
Real-ρ
Reason
ρ
Real---treat the densitometric reading in school, g/cm
3
Calculate and treat school densitometer collimating marks point calibration correction value Δ ρ bottom;
F, startup liquid level regulation apparatus 17, the liquid level of the reference liquid in the main graduated cylinder 21 is risen, repeating step d, e, treat successively the middle collimating marks point of school densitometer 10 and topmost the collimating marks point calibrate, draw middle the collimating marks point for the treatment of school densitometer 10 and the calibration correction value of the top collimating marks point successively;
After g, the collimating marks point calibration of finishing the top for the treatment of school densitometer 10 finish, take out and treat school densitometer 10 and clean, repeating step d, e, f then, each collimating marks point for the treatment of school densitometer 10 carries out second time calibration;
H, finish treat school densitometer 10 second time calibration after, the twice calibration correction value that compares each collimating marks point, in allowed band, the mean value of then getting them is the modified value of this mark density point as if difference, if difference exceeds allowed band, then need calibration once more;
The balance 1 registration variation of twice adjusting liquid level of collimating marks point is not more than 0.0140g for the liquefied petroleum gas (LPG) densitometer during second time calibration, be not more than 0.0050g for petroleum densitmeter, and the deviation of the control temperature of constant temperature system and 20 ℃ should be greater than 0.2 ℃.Otherwise readjust, till meeting the requirements.
I, calibration finish, and take out and treat school densitometer 10 and reference density meter 5, clean up and put well, close equipment such as camera head 12, thermometer 9 and calibration cell.
The present invention in actual use, liquid level regulation apparatus 17 can also be arranged to the version that a vacuum pump and reversal valve match, and by the reversal valve commutation, is implemented in the liquid level adjustment between main graduated cylinder 21 and the auxilliary graduated cylinder 20.
Be noted that, the foregoing description is to the explanation of technical solution of the present invention and unrestricted, other modification that is equal to replacement or makes of affiliated technical field those of ordinary skill according to prior art, as long as do not exceed the thinking and the scope of technical solution of the present invention, all should be included within the interest field of the presently claimed invention.
Claims (6)
1. petroleum densitmeter calibrating installation, it comprises fixed mount (2), calibration cell and balance (1), calibration cell is arranged in the fixed mount (2), the end face of fixed mount (2) is provided with balance (1), balance (1) is arranged with lifting rope (3), it is characterized in that: be provided with glass cylinder (4) in the described calibration cell, described glass cylinder (4) comprises main graduated cylinder (21) and auxilliary graduated cylinder (20), main graduated cylinder (21) is communicated with auxilliary graduated cylinder (20) by liquid level regulation apparatus (17), be provided with thermometer (9) in the main graduated cylinder (21), thermometer (9), liquid level regulation apparatus (17), balance (1) and calibration cell all are connected with computing machine (18).
2. petroleum densitmeter calibrating installation according to claim 1, it is characterized in that: described liquid level regulation apparatus (17) comprises two vacuum pumps, the inlet of a vacuum pump is communicated with main graduated cylinder (21), liquid outlet is communicated with auxilliary graduated cylinder (20), the inlet of another vacuum pump is communicated with auxilliary graduated cylinder (20), and liquid outlet is communicated with main graduated cylinder (21).
3. petroleum densitmeter calibrating installation according to claim 1, it is characterized in that: described calibration cell comprises base (16), cell body, motor (15), stirrer (14), well heater (8) and refrigerator (13), cell body is arranged on the base (16), cell body comprises inside groove (6) and water jacket (7), glass cylinder (4) is arranged in the inside groove (6), inside groove (6) is arranged in the water jacket (7), between inside groove (6) and the water jacket (7) is the fluid passage, stirrer (14) is set under the cell body, motor (15) is arranged in the base (16), motor (15) is connected with stirrer (14), and cell body is provided with well heater (8) and refrigerator (13).
4. petroleum densitmeter calibrating installation according to claim 1 is characterized in that: described fixed mount (2) is provided with lighting device (19), and the height of lighting device (19) is corresponding with the height of glass cylinder (4).
5. petroleum densitmeter calibrating installation according to claim 1 is characterized in that: described fixed mount (2) is provided with camera head (12), and camera head (12) is connected with computing machine (18).
6. the calibration steps of petroleum densitmeter according to claim 1, it is characterized in that: it comprises following processing step:
A, selection are with reference to liquid, reference density meter (5), thermostatic medium;
B, the glass cylinder (4) that will fill with reference to liquid are put into calibration cell, start calibration cell, treat that beginning to treat school densitometer (10) when the thermostatic medium temperature stabilization is near 20 ± 0.01 ℃ calibrates;
C, at first use balance (1) weighing to treat the aerial quality m of school densitometer (10)
EmptyAnd record the dry tube diameter D of each collimating marks point for the treatment of school densitometer (10) with milscale, and give and to treat that school densitometer (10) encloses counterweight (11) and hang in balance (1) lower end by lifting rope (3), reference density meter (5) is put with reference in the liquid into start-up temperature meter (9) and camera head (12);
D, start liquid level regulation apparatus (17), the liquid level of the reference liquid in the main graduated cylinder (21) is risen, the height for the treatment of the interior liquid level of main graduated cylinder (21) stops liquid level regulation apparatus (17) with after the collimating marks point bottom for the treatment of school densitometer (10) is concordant;
E, read m from balance (1)
Balance, read t from thermometer (9), read the reading ρ of reference density meter (5) from the image of camera head (12) collection
LiquidWith the reading ρ that treats school densitometer (10)
Real, according to formula:
In the formula, ρ
Liquid---in the time of 20 ℃, with reference to the density of liquid, g/cm
3
ρ
Empty---air density values, get 0.0012g/cm
3
α
Liquid---in the time of 20 ℃, with reference to the surface tension coefficient of liquid, mN/m;
α
1---the surface tension coefficient of real work liquid, calculate mN/m by capillary constant;
m
Join---counterweight quality in a vacuum, g;
m
Balance---treat the quality of school densitometer in reference liquid, g;
m
Empty---treat school densitometer quality in a vacuum, g;
V
2---the volume of counterweight, cm
3
D---treat the diameter of school densitometer main, mm at the calibrating point;
Calculate and treat the school densitometer solid density of collimating marks point bottom, then according to formula:
Δ ρ=ρ
Real-ρ
Reason
ρ
Real---treat the densitometric reading in school, g/m
3
Calculate and treat school densitometer collimating marks point calibration correction value Δ ρ bottom;
F, startup liquid level regulation apparatus (17), the liquid level of the reference liquid in the main graduated cylinder (21) is risen, repeating step d, e, treat successively the middle collimating marks point of school densitometer (10) and topmost the collimating marks point calibrate, draw middle the collimating marks point for the treatment of school densitometer (10) and the calibration correction value of the top collimating marks point successively;
After g, the collimating marks point calibration of finishing the top for the treatment of school densitometer (10) finish, take out and treat school densitometer (10) and clean, repeating step d, e, f then, each collimating marks point for the treatment of school densitometer (10) carries out second time calibration;
H, finish treat school densitometer (10) second time calibration after, the twice calibration correction value that compares each collimating marks point, in allowed band, the mean value of then getting them is the modified value of this mark density point as if difference, if difference exceeds allowed band, then need calibration once more;
I, calibration finish, and take out and treat school densitometer (10) and reference density meter (5), clean up and put well, close equipment such as camera head (12), thermometer (9) and calibration cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010539387XA CN102023121B (en) | 2010-11-11 | 2010-11-11 | Petroleum hydrometer calibration device and method |
Applications Claiming Priority (1)
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| CN104198330A (en) * | 2014-08-26 | 2014-12-10 | 深圳市湘津石仪器有限公司 | Float-type densitometer scale calibration device and calibration method thereof |
| CN104237067A (en) * | 2014-10-17 | 2014-12-24 | 河南省计量科学研究院 | Glass hydrometer detecting/calibrating device |
| CN108801848A (en) * | 2018-07-12 | 2018-11-13 | 丹东意邦计量仪器仪表有限公司 | A kind of intelligent constant-temperature calibrating liquid densimeter experimental rig |
| CN109269939A (en) * | 2018-10-31 | 2019-01-25 | 四川泛华航空仪表电器有限公司 | Sash weight volume calibration method |
| CN109283092A (en) * | 2018-10-31 | 2019-01-29 | 四川泛华航空仪表电器有限公司 | A kind of density sensor high/low temperature experimental method |
| CN109283093A (en) * | 2018-10-31 | 2019-01-29 | 四川泛华航空仪表电器有限公司 | A kind of density sensor high temperature performance testing equipment |
| CN109459347A (en) * | 2018-11-26 | 2019-03-12 | 西安航天计量测试研究所 | For the definite value of standard viscosity liquid and calibrating/calibrating installation of work viscosimeter |
| CN110082488A (en) * | 2019-04-19 | 2019-08-02 | 山西省计量科学研究院 | A kind of dissolved oxygen metering calibrating installation and method |
| CN111982741A (en) * | 2020-09-24 | 2020-11-24 | 新疆维吾尔自治区计量测试研究院 | Online vibrating tube liquid densimeter verification and calibration device |
| CN112697643A (en) * | 2020-12-11 | 2021-04-23 | 北方华锦化学工业股份有限公司 | Method for measuring density of residual oil |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2183564Y (en) * | 1994-01-15 | 1994-11-23 | 大庆市技术监督局 | Examination device of slurry density |
| JPH07248315A (en) * | 1994-03-10 | 1995-09-26 | Mitsubishi Heavy Ind Ltd | Density measuring device |
| CN201897557U (en) * | 2010-11-11 | 2011-07-13 | 朱茜 | Petroleum densimeter calibrating device |
-
2010
- 2010-11-11 CN CN201010539387XA patent/CN102023121B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2183564Y (en) * | 1994-01-15 | 1994-11-23 | 大庆市技术监督局 | Examination device of slurry density |
| JPH07248315A (en) * | 1994-03-10 | 1995-09-26 | Mitsubishi Heavy Ind Ltd | Density measuring device |
| CN201897557U (en) * | 2010-11-11 | 2011-07-13 | 朱茜 | Petroleum densimeter calibrating device |
Non-Patent Citations (1)
| Title |
|---|
| 《计量技术》 20021231 李兴华 低量程密度计的校准技术 37-39 1，4-5 , 第10期 2 * |
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| CN104198330B (en) * | 2014-08-26 | 2017-02-01 | 深圳市湘津石仪器有限公司 | Float-type densitometer scale calibration device and calibration method thereof |
| CN104198330A (en) * | 2014-08-26 | 2014-12-10 | 深圳市湘津石仪器有限公司 | Float-type densitometer scale calibration device and calibration method thereof |
| CN104237067A (en) * | 2014-10-17 | 2014-12-24 | 河南省计量科学研究院 | Glass hydrometer detecting/calibrating device |
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| CN109283092A (en) * | 2018-10-31 | 2019-01-29 | 四川泛华航空仪表电器有限公司 | A kind of density sensor high/low temperature experimental method |
| CN109283093A (en) * | 2018-10-31 | 2019-01-29 | 四川泛华航空仪表电器有限公司 | A kind of density sensor high temperature performance testing equipment |
| CN109459347A (en) * | 2018-11-26 | 2019-03-12 | 西安航天计量测试研究所 | For the definite value of standard viscosity liquid and calibrating/calibrating installation of work viscosimeter |
| CN110082488A (en) * | 2019-04-19 | 2019-08-02 | 山西省计量科学研究院 | A kind of dissolved oxygen metering calibrating installation and method |
| CN111982741A (en) * | 2020-09-24 | 2020-11-24 | 新疆维吾尔自治区计量测试研究院 | Online vibrating tube liquid densimeter verification and calibration device |
| CN112697643A (en) * | 2020-12-11 | 2021-04-23 | 北方华锦化学工业股份有限公司 | Method for measuring density of residual oil |
| CN113237429A (en) * | 2021-05-08 | 2021-08-10 | 交通运输部天津水运工程科学研究所 | Silt deposition thickness measurement calibration device and method |
| CN113237429B (en) * | 2021-05-08 | 2024-05-14 | 交通运输部天津水运工程科学研究所 | Sediment accumulation thickness measurement calibration device and method |
| CN113390754A (en) * | 2021-06-11 | 2021-09-14 | 山东非金属材料研究所 | Automatic verification/calibration device and method for glass float meter |
| CN115184210A (en) * | 2022-09-08 | 2022-10-14 | 中国计量科学研究院 | Automatic pressurization calibration device and method for online vibrating tube liquid densimeter |
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