CN203732396U - Device for quickly determining nitrogen content in edible vegetable oil - Google Patents
Device for quickly determining nitrogen content in edible vegetable oil Download PDFInfo
- Publication number
- CN203732396U CN203732396U CN201420007023.0U CN201420007023U CN203732396U CN 203732396 U CN203732396 U CN 203732396U CN 201420007023 U CN201420007023 U CN 201420007023U CN 203732396 U CN203732396 U CN 203732396U
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- CN
- China
- Prior art keywords
- vegetable oil
- edible vegetable
- cylinder body
- oil
- cylinder block
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Abstract
The utility model relates to a device for quickly determining nitrogen content in edible vegetable oil. The device comprises an electromagnetic stirrer, a thermostatic bath and a cylinder block, wherein edible vegetable oil is filled into the cylinder block; a sealing cover assembly is arranged at the top to seal the cylinder block; the sealing cover assembly is connected with a differential pressure gauge, a vacuum pump, a gas composition instrument and a nitrogen cylinder through pipelines; one end of the differential pressure gauge extends into an upper space of the edible vegetable oil inside the cylinder block; the sealing cover assembly is also connected with a circulating pump and a thermograph through pipelines; an oil inlet pipe and an oil outlet pipe are arranged on the circulating pump; the oil inlet pipe extends to the bottom of the edible vegetable oil of the cylinder block; the oil outlet pipe extends to the upper space of the edible vegetable oil inside the cylinder block; a spray header is arranged at an oil outlet of the oil outlet pipe; the thermograph comprises an oil temperature detection pipeline extending into the edible vegetable oil of the cylinder block and an internal space temperature detection pipeline extending to the upper space of the edible vegetable oil inside the cylinder block. By adopting the device disclosed by the utility model, spraying and stirring are comprehensively utilized, and the device is fast in detection speed, accurate in result and wider in application range.
Description
Technical field
The utility model relates to the measurement of nitrogen content in edible vegetable oil, refers in particular to the device of nitrogen content in a kind of Fast Measurement edible vegetable oil.
Background technology
Though nitrogen-charging fresh-keeping technology is existing application in edible oil field, but the quantitative detection to the nitrogen amount of being filled with in grease and nitrogen dissolve in hybrid mode few people's research of edible vegetable oil fast, customary practice is in the industry to be filled with by rule of thumb, being filled with time and the amount of being filled with all cannot be quantitative, causes the low and energy dissipation of production efficiency.Because whether nitrogen gas dissolved amount in packaging oil product is sufficient without corresponding detection method, so often there is the phenomenon of oil product oil bottle distortion on shelf, this has brought very large infringement to Oils and fats enterprise, and the method for therefore inventing nitrogen content in a kind of Fast Measurement edible vegetable oil has very important realistic meaning.
The method of measuring at present gas solubility in liquid adopts volumetric method more, but (its mole fraction is roughly 10 because the solubleness of gas in liquid is generally very little
-2 -10
-
5 between), thereby this brings very large difficulty to experimental implementation, and very high to detecting instrument requirement, otherwise experimental result error is larger.And in existing mensuration liquid, the instrument of gas content and Method And Principle are all the volumes that records liquid absorption gas based on the Ideal-Gas Equation, but the mensuration of nitrogen content in the inapplicable edible vegetable oil of these instruments, major defect has 3 points: the one, and it is longer that liquid phase reaches time of balance, is unfavorable for fast detecting; The 2nd, the measurement means when lacking liquid phase and reaching balance; The 3rd, cannot measure the gas flow having contained in liquid.
Summary of the invention
The purpose of this utility model is for the shortcoming existing in background technology and problem improvement and bring new ideas in addition, a kind of monitoring that is applicable to edible vegetable oil and fills nitrogen process is provided, fill nitrogen oil temperature and can make vegetable oil absorb fast and efficiently nitrogen by adjusting the best, not only guaranteed product quality but also saved the device of nitrogen content in the Fast Measurement edible vegetable oil of production cost.
The utility model comprises magnetic stirrer, is placed on the thermostatic bath showing with temperature on magnetic stirrer, and is arranged on the cylinder body in isothermal liquid in the thermostatic bath showing with temperature, wherein:
Filling edible vegetable oil in cylinder body, top arranges gland bonnet component sealing cylinder body, on gland bonnet assembly, be connected with one end by pipeline and stretch into the differential manometer in edible vegetable oil upper space in cylinder body, vacuum pump, gas composition instrument and nitrogen cylinder, on gland bonnet assembly, be also connected with ebullator and thermometer by pipeline;
Described ebullator is provided with oil inlet pipe and flowline, and wherein oil inlet pipe stretches into cylinder body edible vegetable oil bottom, and flowline stretches in the interior edible vegetable oil upper space of cylinder body, and the oil-out of flowline is provided with spray head;
Described thermometer comprises the oil temperature signal piping stretching in cylinder body edible vegetable oil and stretches into the interior space temperature signal piping of the bottle in edible vegetable oil upper space in cylinder body.
Advantage of the present utility model and beneficial effect:
1, the utility model first Application, in edible oil field, can not only be measured gas content in edible oil, can also measure a bottle content for interior gas different component.
2, the utility model, by spray and the comprehensive utilization of stirring, makes oil droplet be vaporific by spray head and scatters, and regulates rate of circulation that gas is fully contacted with liquid, reaches gas-liquid phase equilibrium within the shortest time, has greatly shortened detection time.
3, the utility model detection speed is fast, and result is accurate.Because gas-liquid can fully be mixed at short notice, the time of vapor liquid equilibrium is very short, generally, in 30 minutes, when gas-liquid phase equilibrium, can reflect by the change curve on computer, and data recording is accurate.Utilize the equation of gas state, can accurately obtain experiment front and back gas volume changing value.
4, can first calculate the gas flow (actual meltage) that can also dissolve or separate out in fuel-displaced by the utility model, vacuumized again and extracted all gas that it contains, and then be filled with nitrogen it is reached after secondary balancing, can calculate the saturated meltage of gas, both differences are the gas flows having contained in oil.
The utility model not only can be measured the variation of nitrogen gas dissolved amount and upper sheaf space gas composition in edible vegetable oil, is also applicable to the mensuration of other gas saturation solubility and actual meltage in different liquids.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
Embodiment
As shown in Figure 1, the utility model comprises magnetic stirrer 16, is placed on the thermostatic bath 12 showing with temperature on magnetic stirrer 16, and is arranged on the cylinder body 11 in the interior isothermal liquid 13 of thermostatic bath 12 showing with temperature, wherein:
The interior filling edible vegetable oil 14 of cylinder body 11, top arranges gland bonnet component sealing cylinder body 11, on gland bonnet assembly, be connected with one end by pipeline and stretch into differential manometer 4, vacuum pump 5, gas composition instrument 6 and the nitrogen cylinder 8 in interior edible vegetable oil 14 upper spaces of cylinder body 11, on gland bonnet assembly, be also connected with ebullator 7 and thermometer 9 by pipeline;
Described ebullator 7 is provided with oil inlet pipe 17 and flowline 18, and wherein oil inlet pipe 17 stretches into cylinder body edible vegetable oil 14 bottoms, and flowline 18 stretches in interior edible vegetable oil 14 upper spaces of cylinder body 11, and the oil-out of flowline 18 is provided with spray head 10;
Described thermometer 9 comprises the oil temperature signal piping stretching in cylinder body edible vegetable oil 14 and stretches into space temperature signal piping in the bottle in interior edible vegetable oil 14 upper spaces of cylinder body 11.
Internal cavities and the ambient atmosphere of gland bonnet component sealing described in the utility model and partition cylinder body 11, gland bonnet assembly comprises O-ring seal, clasp 1, bottle cap 2 and bottle stopper 3, and the connecting line inserting end of described differential manometer 4, vacuum pump 5, gas composition instrument 6, ebullator 7, nitrogen cylinder 8 and thermometer 9 all stretches in cylinder body 11 by bottle stopper 3.Described differential manometer 4, gas composition instrument 6 and thermometer 9 is all connected computer and reads and recording detection data by computer.Described cylinder body 11 is the flat glass bottle with scale, and the support 15 that cylinder body 11 arranges by bottom is positioned in isothermal liquid 13, and edible vegetable oil 14 liquid levels in cylinder body 11 are lower than isothermal liquid 13 liquid levels.Described cylinder body 11 bottoms are 2-3cm with thermostatic bath 12 distances from bottom that show with temperature.
Design concept of the present utility model:
The utility model cylinder body 11 is connected into and out of oil pipe with ebullator 7, there is oil inlet pipe 17 in cylinder body 11 bottoms, there is flowline 18 at cylinder body 11 tops, flowline 18 ends are connected with spray head 10, cylinder port O-ring seal is closely connected with bottle stopper 3, bottle sealing encloses sealing function, and bottle internal cavity and ambient atmosphere are separated, and guarantees that the interior sealing of cylinder body 11 is good.Cylinder body 11 is placed on to 12 li of thermostatic baths that show with temperature, three small racks 15 are arranged at cylinder body 11 bottoms, and making cylinder body 11 bottoms is 2-3cm from the distance of thermostatic bath 12 bottoms that show with temperature, guarantees that nitrogen and edible vegetable oil are in isoperibol.In the bottle on vegetable oil 14 upper stratas, the temperature in space is measured by thermometer 9 and is connected with computer with vegetable oil 14 oil temperatures, and in bottle, the pressure in space is changed by precision pressure gauge and differential manometer 4 monitoring pressures, and differential manometer 4 is connected with computer, and when balance, pressure reduction is constant.In bottle, space is connected with gas composition instrument 6, for measuring a bottle variation for interior space gas composition.The vegetable oil that has contained gas can be placed on cylinder body 11 on large capacity magnetic stirrer 16, stirs while vacuumizes, and after the gas in oil is all extracted out, is filled with nitrogen again, makes liquid phase reach balance by circulation.
The utility model groundwork principle is to be filled with nitrogen after the gas in edible vegetable oil is all extracted out again, makes liquid phase reach balance by circulation, records saturated inspiratory capacity.Directly edible vegetable oil is circulated air-breathing, reach after balance and record the gas flow sucking again, the former deducts the latter and is the actual gas flow containing in oil.
Assay method of the present utility model comprises the following steps:
1) computer and differential manometer, thermometer and gas composition instrument connected to machine and open, the cylinder body of known volume being put into the thermostatic bath showing with temperature, taking off bottle stopper and connecting line, the edible vegetable oil of known volume is slowly injected, by bottle stopper jam-pack, buckle well clasp again, record initial temperature T
0, pressure P
0, gas volume V
0with gas composition situation;
2) open ebullator, governing speed, makes edible vegetable oil be vaporific spray by oil inlet pipe, flowline by spray head, observes pressure reduction, temperature and gas change of component curve, and after liquid phase reaches balance, pressure reduction is constant, record pressure P now
1and temperature T
1, by equation of gas state n=PV/RT, wherein R is constant, and the gas in sealed cylinder block is that constant is constant, and n is definite value, the equation of gas state P can release original state and equilibrium state thus time
0v
0/ T
0=P
1v
1/ T
1, gas volume V while calculating equilibrium state
1, the amount that obtains this known volume edible oil absorption gas under this pressure and temperature environment is V
inhale=V
1-V
0, then divided by edible oil volume, obtain the amount S of unit edible vegetable oil absorption gas under this pressure and temperature environment
inhale, amount that can also dissolved gases;
3) above-mentioned suction there is is the cylinder body of the edible vegetable oil of gas move on large capacity magnetic stirrer, connect vacuum pump, vacuumize while stir, the gas in edible vegetable oil is all extracted out; Then repeating 2) step operation is filled with nitrogen, makes liquid phase reach secondary balancing; The amount S that altogether can dissolve nitrogen by the volumescope unit of the calculating edible vegetable oil of the equation of gas state and known edible vegetable oil is again saturation solubility, and finally in the unit's of drawing edible vegetable oil, the actual nitrogen amount containing is the actual nitrogen amount=S-S containing in unit edible vegetable oil
inhale.
Embodiment:
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, all pipelines and device connect.Open the stopper that is connected with pipeline, slowly edible vegetable oil is injected to cylinder body, can read the volume (V oil=5.01L) of edible vegetable oil by the scale on cylinder body, fill in rapidly bottle stopper, buckle well clasp, now record initial temperature, pressure, chamber inner volume and gas composition situation, record records now the pressure P in bottle by differential manometer
0=101.12 KPa, thermometer records temperature T in cavity
0=15 DEG C+273=288K, can calculate a bottle internal cavity volume V by cylinder body scale
0=6.210 L, can measure the content of each component gas, N by gas composition instrument
2=78%, O
2=22%.Open ebullator, adjusting circulation pump speed is 3000r/min, makes oil droplet be vaporific spray, observes pressure reduction, temperature and gas change of component curve, and after liquid phase reaches balance, pressure reduction is constant, record pressure P now
1=101.72 KPa, temperature=16 DEG C+273=289K, the content of each component gas, N
2=81%, O
2=19%, can be calculated the amount of dissolved gas by the equation of gas state, divided by edible oil volume, obtain unit edible oil under this pressure and temperature environment and absorb the amount of gas.
P
0V
0/T
0 = P
1V
1/T
1
101.12×6.21/288=101.72 V
1/289
V
1=6.195
V suction=V
1-V
0=6.21-6.195=0.015 (L)
This is vacuumized with the cylinder body that reaches vapor liquid equilibrium, open large capacity stirrer and vacuum pump, vacuumize while stir, gas in coil neutralization bottle is all extracted out, stop stirrer and vacuum pump, close rapidly nitrogen valve, now P after being then filled with a certain amount of nitrogen
0＇=101.96 KPa, T
0＇=289K, V
0＇=6.210 L, the content of each component gas, N
2=100%, O
2=0, ON cycle pump, single job before repeating, makes to reach secondary balancing, P
1＇=71.35 KPa, T
1＇=293K, the content of each component gas, N
2＇=100%, O
2=0.Can calculate V by the equation of gas state
1＇, V
1＇ is saturated gas meltage S.
P
0＇V
0＇/ T
0＇= P
1＇V
1＇/ T
1＇
101.96×6.21/289 = 71.35 V
1＇/ 293
V
1＇= S = 8.997 （L）
The saturated inspiratory capacity of 5.01L oil is 8.997L, and every liter of oil absorbs 1.796 L nitrogen.
Actual gas flow=the S containing-V suction=8.997-0.015=8.982(L in 5.01L oil)
Embodiment described in the utility model is only the description that preferred implementation of the present utility model is carried out; not the utility model design and scope are limited; do not departing under the prerequisite of the utility model design philosophy; various modification and improvement that in this area, engineering technical personnel make the technical solution of the utility model; all should fall into protection domain of the present utility model; the technology contents of the utility model request protection, has all been documented in claims.
Claims (5)
1. the device of nitrogen content in a Fast Measurement edible vegetable oil, it is characterized in that comprising magnetic stirrer (16), be placed on the thermostatic bath (12) showing with temperature on magnetic stirrer (16), with the cylinder body (11) being arranged in the interior isothermal liquid of thermostatic bath (12) (13) showing with temperature, wherein:
Filling edible vegetable oil (14) in cylinder body (11), top arranges gland bonnet component sealing cylinder body (11), on gland bonnet assembly, be connected with one end by pipeline and stretch into differential manometer (4), vacuum pump (5), gas composition instrument (6) and the nitrogen cylinder (8) in the interior edible vegetable oil of cylinder body (11) (14) upper space, on gland bonnet assembly, be also connected with ebullator (7) and thermometer (9) by pipeline;
Described ebullator (7) is provided with oil inlet pipe (17) and flowline (18), wherein oil inlet pipe (17) stretches into cylinder body edible vegetable oil (14) bottom, flowline (18) stretches in the interior edible vegetable oil of cylinder body (11) (14) upper space, and the oil-out of flowline (18) is provided with spray head (10);
Described thermometer (9) comprises the oil temperature signal piping stretching in cylinder body edible vegetable oil (14) and stretches into space temperature signal piping in the bottle in the interior edible vegetable oil of cylinder body (11) (14) upper space.
2. the device of nitrogen content in Fast Measurement edible vegetable oil according to claim 1, it is characterized in that internal cavities and the ambient atmosphere of described gland bonnet component sealing and partition cylinder body (11), gland bonnet assembly comprises O-ring seal, clasp (1), bottle cap (2) and bottle stopper (3), and the connecting line inserting end of described differential manometer (4), vacuum pump (5), gas composition instrument (6), ebullator (7), nitrogen cylinder (8) and thermometer (9) all stretches in cylinder body (11) by bottle stopper (3).
3. the device of nitrogen content in Fast Measurement edible vegetable oil according to claim 1, is characterized in that described differential manometer (4), gas composition instrument (6) and thermometer (9) are all connected computer and read and recording detection data by computer.
4. the device of nitrogen content in Fast Measurement edible vegetable oil according to claim 1, it is characterized in that described cylinder body (11) is for the flat glass bottle with scale, the support (15) that cylinder body (11) arranges by bottom is positioned in isothermal liquid (13), and cylinder body (11) in edible vegetable oil (14) liquid level lower than isothermal liquid (13) liquid level.
5. the device of nitrogen content in Fast Measurement edible vegetable oil according to claim 1, is characterized in that described cylinder body (11) bottom is 2-3cm with thermostatic bath (12) distance from bottom showing with temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420007023.0U CN203732396U (en) | 2014-01-07 | 2014-01-07 | Device for quickly determining nitrogen content in edible vegetable oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420007023.0U CN203732396U (en) | 2014-01-07 | 2014-01-07 | Device for quickly determining nitrogen content in edible vegetable oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203732396U true CN203732396U (en) | 2014-07-23 |
Family
ID=51202459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420007023.0U Expired - Lifetime CN203732396U (en) | 2014-01-07 | 2014-01-07 | Device for quickly determining nitrogen content in edible vegetable oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203732396U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104777072A (en) * | 2015-04-24 | 2015-07-15 | 东南大学 | Measurement computation method of gas content of controllable pressure volume modified type steam turbine oil |
-
2014
- 2014-01-07 CN CN201420007023.0U patent/CN203732396U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104777072A (en) * | 2015-04-24 | 2015-07-15 | 东南大学 | Measurement computation method of gas content of controllable pressure volume modified type steam turbine oil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xiong Weilin Inventor after: Li Minli Inventor after: Bao Lilin Inventor after: Zhang Qianyi Inventor before: Xiong Weilin |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: XIONG WEILIN TO: XIONG WEILIN LI MINLI BAO LILIN ZHANG QIANYI |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |
|
| CX01 | Expiry of patent term |