CN202854072U - Device for determining freezing point of oil product - Google Patents
Device for determining freezing point of oil product Download PDFInfo
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- CN202854072U CN202854072U CN 201220342722 CN201220342722U CN202854072U CN 202854072 U CN202854072 U CN 202854072U CN 201220342722 CN201220342722 CN 201220342722 CN 201220342722 U CN201220342722 U CN 201220342722U CN 202854072 U CN202854072 U CN 202854072U
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Abstract
The utility model discloses a device for determining the freezing point of an oil product. The device comprises a light source, a detector, a cooling device, a measuring tube, a temperature measuring device and a light transmittance recording device. According to the device disclosed by the utility model, and the illumination position of light is within a range of a triangular AOC or a triangular BOD formed by the intersection of a liquid level when a sample is not solidified and a liquid level when the sample is solidified while a sample tube is inclined. Compared with other methods, the method using the device disclosed by the utility model is operated the same as GB/T 510, and therefore, the operating result of the device is consistent with that of a manual method.
Description
Technical field
The utility model relates to a kind of analysis and detection device, particularly a kind of apparatus and method of measuring oil product solidifying point.
Background technology
Solidifying point is the very important character in a top of oil product, and concerning diesel oil and biodiesel, it has directly determined the trade mark of diesel oil, thereby has determined its price, so the mensuration of solidifying point is even more important to diesel oil.At present, the standard method of the solidifying point of mensuration petroleum products is GB/T 510 petroleum products questionable points determination methods.The method adopts 160 millimeters of height, 20 millimeters of internal diameters, the round bottom sample hose of one annular graticule is being arranged as sample hose apart from pipe 30 millimeters outer wall place, the end, sample is installed to annular graticule place, with cork temperature measuring equipment is fixed on sample hose central authorities, makes mercury bulb apart from 8 to 10 millimeters at the pipe end; Then put into 130 millimeters of height, in the glass bushing that internal diameter is 40 millimeters.Sleeve pipe is immersed in leaves standstill at room temperature after making the temperature of sample reach 50 degree in the water-baths of 50 degree, make sample be cooled to 35 ± 5 ℃, then this cover instrument is immersed in the cryostat of having fallen temperature, the temperature of cryostat is than low 7 to 8 ℃ of the expection condensation point of sample.When condensation point that specimen temperature is cooled to expect, with instrument inclination 45 degree that are immersed in the cryostat, and with such heeling condition maintenance 1 minute, when liquid level position has when mobile, from sleeve pipe, take out sample hose, and sample hose is preheated to sample again reaches 50 ℃, then use than test temperature last time low 4 ℃ or other lower temperature to redeterminate, until certain test temperature can make liquid level position stop till the movement, liquid level does not have mobile maximum temperature to be condensation point.Because the solidifying point of sample is normally unknown, often needs repeatedly heating, cooling procedure, take time and effort, so people have carried out a lot of researchs and have replaced manually-operated.
In the disclosed method of Chinese patent CN201311403 and CN2722237, two light transmitting fibers are packaged in the elongated stainless-steel tube of lower ending opening, stainless-steel tube is fixed in the test tubes, and is vertical with tested oil sample, adopts the light reflection method to detect condensation point or the pour point of oil product.
Chinese patent CN101101270 comes lubricating cup is pressurizeed by pressue device at the temperature spot of expection, promotes sample and flows in pipeline, and determine the condensation point of sample by measuring variations in line pressure.Chinese patent CN101556254A adopts 1 ℃ of the every decline of sample just to dry up dry air to sample surfaces and the surface of sample is moved, then adopt the situation of movement on fluorescence detector working sample surface.If do not detect the movement of sample surfaces, think that then this temperature is the solidifying point of sample.Chinese patent CN1162117A by sample, then cools off sample with infrared light, determines solidifying point by detecting transmitance, and the measurement result of the method is closer to cloud point but not solidifying point.
Chinese patent CN2809636Y has described a kind of online freezing point analyzer, and solidifying point is determined in the variation of shearing stress when moving by working sample.Chinese patent CN2492849Y has described a kind of on-line freezing-point analyzer, and solidifying point is determined in the variation of the sticking resistance by working sample.Chinese patent CN1428608A has described a kind of online freezing point analyzer, and sample is imposed electromagnetic pressure impulse, changes by the pressure of measuring the test cabinet top and determines solidifying point.
Chinese patent CN2852117Y has described a kind of semiconductor cooling device for measuring solidifying point, does not relate to actual measuring process.Jap.P. JP19840154446 determines solidifying point by the temperature platform of generation when solidifying point occurs in the measurement sample cooling procedure or the slight rising of temperature.
Because petroleum products is the potpourri of wide boiling range normally, the appearance of its solidification phenomenon is a point unlike pure potpourri, but a process, so its solidifying point is relevant with its measuring method.The kryoscopy method of stipulating among present product standard such as ordinary diesel oil standard GB 252-2011, derv fuel oil standard GB19147-2009 and the biodiesel Blended fuel GB 25199-2010 all is GB/T 510 petroleum products questionable points determination methods, the determinator that above-mentioned patent is described is all different from GB/T 510 with determination step, so measurement result is also incomplete same with the measurement result of GB/T 510.
The utility model content
The purpose of this utility model is to provide a kind of device of measuring oil product solidifying point, measures the solidifying point of oil product by this device, and method of operating is identical with GB/T 510, so the result also can be consistent.
The technical solution adopted in the utility model is: a kind of device of measuring the solidifying point of oil product comprises light source, photosensitive detector, cooling device, measuring tube, temperature measuring equipment, temperature recording unit and light transmission rate pen recorder.Measuring tube is placed in the cooling device, and the light that light source sends is placed on measuring tube part in the cooling transposition through shining, and after the light that sees through arrived photosensitive detector, the signal of generation was transferred to the light transmission rate pen recorder.Temperature measuring equipment is placed in the sample in the sample hose, and the signal of generation is transferred to temperature recording unit.
Light source in the utility model can be visible light source, also can be ultraviolet source, also can be infrared light supply, take visible light source as good.
A kind of device of measuring the solidifying point of oil product of the utility model, it is further characterized in that: the irradiation position of the light of described light source is the triangle AOC that intersects to form of liquid level when sample does not solidify when sample hose tilts and the liquid level when solidifying or the scope of triangle BOD, and can not exceed this scope, as shown in Figure 4.
Described photosensitive detector comprises photodiode detector, photomultiplier detector, charge-coupled detector(CCD) CCD, charge-injection detector(CID) CID etc., the type of detecting device will with the type matching of light source.
A kind of device of measuring the solidifying point of oil product of the utility model, it is further characterized in that: after the light that sees through arrived photosensitive detector, the input analog to digital conversion circuit arrived the light transmission rate pen recorder after the signal of generation was processed via amplifier.Temperature measuring equipment is placed in the sample in the sample hose, and the input analog to digital conversion circuit arrived temperature recording unit after the signal of generation was processed via amplifier.
Cooling device of the present utility model comprises semiconductor cooler, with cooling medium as the cooling device of refrigerant etc.
Measuring tube in the utility model refers to the sample hose of the fixed measure of stipulating in the GB/T 510 petroleum products questionable points determination methods and the sleeve combination device after together.160 ± 10 millimeters of sample hose height, 20 ± 1 millimeters of internal diameters, apart from pipe 30 millimeters outer wall place, the end one annular graticule, round bottom are being arranged.130 ± 10 millimeters of glass bushing height, 40 ± 2 millimeters of internal diameters, round bottom.Also can use the pipe different with length from the diameter of above-mentioned pipe, but will guarantee that the measurement result result is consistent with the pipe result of regulation among the GB/T 510.
The angle that measuring tube in the utility model tilts is the 1-75 degree, preferably 45 degree.
Temperature measuring equipment in the utility model is thermopair, thermometer etc., take thermopair as good.
Device of the present utility model can be to measure monocyte sample at every turn, also can be to measure Multi-example at every turn.When each mensuration Multi-example, need to light be shone respectively each sample with a light-dividing device, perhaps with scanister light is shone respectively each sample, and being delivered on the detecting device respectively through light of each sample detected.
Temperature recording unit in the utility model and light transmission rate pen recorder can be registering instruments, also can be computing machines.When each mensuration Multi-example, pen recorder should be able to record respectively temperature and the light transmission rate signal of each sample.
Principle of the present utility model is: when the fluid sample in the sample hose did not solidify, if sample hose is tilted, then liquid level still kept level, sees the AB among Fig. 2.When the fluid sample in the sample hose solidifies, consistent when then liquid level is with level if sample hose is tilted, keep motionless, such as the CD in the accompanying drawing 3.Liquid level AB when not solidifying and the liquid level CD when solidifying intersect at an O mutually, consist of two triangles, see AOC and BOD in the accompanying drawing 4.If sample does not solidify, when then tilting sample hose, triangle AOC partly is empty at every turn, and triangle BOD part then is full of fluid sample.If sample solidifies, when then tilting sample hose, triangle AOC partly is full of solid sample, and triangle BOD part then is empty.If therefore with the side irradiation triangle AOC part of light beam from the sample hose of inclination, receive through the light that comes with a photosensitive detector at opposite side, if sample does not solidify, when then tilting sample hose at every turn, because triangle AOC partly is empty, the light intensity that sees through just remains unchanged or changes very little.If sample solidifies, when then tilting sample hose, triangle AOC partly is full of solid sample, and the light intensity that sees through sharply reduces.Then this point can be decided to be solidifying point, and its schematic diagram is seen accompanying drawing 5.In like manner, if with the side irradiation triangle BOD part of light beam from the sample hose of inclination, receive through the light that comes with a photosensitive detector at opposite side, if sample does not solidify, when then tilting sample hose at every turn, because triangle BOD partly is full of fluid sample, the light intensity that sees through just remains unchanged or changes very little.If sample solidifies, when then tilting sample hose, triangle BOD partly is empty, and the light intensity that sees through sharply increases.Then this point can be decided to be solidifying point, and its schematic diagram is seen accompanying drawing 6.
By the condensation point that the device of a kind of solidifying point of measuring oil product of the utility model is measured, compare with other method, the condensation point determination methods is identical with GB/T 510, and is also identical with GB/T510 to the disturbance of sample, thus the result also with GB/T 510 methods make consistent.
Description of drawings
Fig. 1 is a kind of apparatus structure schematic diagram of measuring oil product solidifying point of the utility model;
Fig. 2 is the mounted measuring tube schematic diagram of the utility model;
Fig. 3 is liquid level schematic diagram in the sample hose that tilts when not solidifying of the utility model working sample;
Fig. 4 is liquid level schematic diagram in the sample hose that tilts when solidifying of the utility model working sample;
Fig. 5 is Fig. 2 and Fig. 3 two states overlaying state schematic diagram;
Transmittance changed schematic diagram when Fig. 6 was irradiation triangle AOC zone;
Transmittance when Fig. 7 is irradiation triangle BOD zone changes schematic diagram;
Reference numeral shown in the figure 1 is sample hose, and 2 is sleeve pipe, and 3 is thermopair, and 4 is light source, and 5 is the photosensitivity detecting device, and 6 is cooling device, and 7 is the light transmission rate pen recorder, and 8 is temperature recording unit.
Embodiment
Further specify a kind of embodiment of measuring the device of oil product solidifying point of the utility model below in conjunction with accompanying drawing, but these embodiment do not limit the utility model.
A kind of device of measuring oil product solidifying point of the utility model comprises sample hose 1, sleeve pipe 2, thermopair 3, light source 4, photosensitivity detecting device 5, cooling device 6, light transmission rate pen recorder 7, temperature recording unit 8.160 ± 10 millimeters of sample hose height, 1 millimeter of internal diameter 20 scholar, apart from pipe 30 millimeters outer wall place, the end one annular graticule, round bottom are being arranged.10 millimeters of glass bushing height 130 scholars, 2 millimeters of internal diameter 40 scholars, round bottom.
Embodiment 1:
Source light shines the triangle AOC zone in the accompanying drawing 4.Regulation according to GB/T 510 petroleum products questionable points determination methods is selected sample hose and sleeve pipe.Diesel samples is installed to annular graticule place, in sample hose, insert thermopair, make temperature measuring point be in center line and apart from pipe 8 to 10 millimeters at the end.To the sample hose of sample and thermopair be housed, vertically be immersed in 50 ± 1 ℃ the water-bath, until the temperature of sample reaches till 50 ± 1 ℃.Then take out the sample hose that sample and thermopair are housed from water-bath, dry outer wall, sample hose is contained in the sleeve pipe securely, the sample hose outer wall will be everywhere apart from equating with internal surface of sleeve pipe.The measuring tube that installs will be vertically fixed on the clip of support, and puts at room temperature and leave standstill, until the sample in the sample hose is cooled to till 35 ± 5 ℃.Then measuring tube is put into the cooling device that cooling medium is housed.The degree of depth that measuring tube immerses cooling medium should be no less than 70 millimeters.The measuring tube that is immersed in the cooling medium is tilted to become 45 degree, guarantee that the sample part still is immersed in the cooling medium.The liquid level of this moment is the AB in the accompanying drawing 2.Measure the transmitance of light, and be recorded as initial transmittance.Cooling samples when near the condensation point that specimen temperature is cooled to expect, tilts to become 45 degree with the measuring tube that is immersed in the cooling medium, and heeling condition that will be such kept 1 minute, will guarantee that sample partly still will be immersed in the cooling medium this moment.Then measure the transmitance of light, do not have significant change if the transmitance of light is compared with initial value, then measuring tube is returned to vertical position again.Equitemperature continues to reduce by 2 ℃, the measuring tube that is immersed in the cooling medium is tilted to become 45 degree, and such heeling condition was kept 1 minute, will guarantee that the sample part still will be immersed in the cooling medium this moment.Then measure the transmitance of light, do not have significant change if the transmitance of light is compared with initial value, then measuring tube is returned to vertical position again.Repeat this experiment, until sharply descending appears in the percent of pass of light, the sample temperature of this moment is solidifying point, as shown in Figure 6.
Embodiment 2:
Source light shines the triangle BOD zone in the accompanying drawing 4.Regulation according to GB/T 510 petroleum products questionable points determination methods is selected sample hose and sleeve pipe.Sample hose is 160 ± 10 millimeters of height, 20 ± 1 millimeters of internal diameters, apart from managing 30 millimeters outer wall place, the end round bottom sample hose of one annular graticule is being arranged.Diesel samples is installed to annular graticule place, in sample hose, insert thermopair, make temperature measuring point be in center line and apart from pipe 8 to 10 millimeters at the end.To the sample hose of sample and thermopair be housed, vertically be immersed in 50 ± 1 ℃ the water-bath, until the temperature of sample reaches till 50 ± 1 ℃.Then from water-bath, take out the sample hose that sample and thermopair are housed, dry outer wall, sample hose is contained in the sleeve pipe securely, sample hose outer wall and internal surface of sleeve pipe will be everywhere apart from equating, as shown in Figure 1.The measuring tube that installs will be vertically fixed on the clip of support, and puts at room temperature and leave standstill, until the sample in the sample hose is cooled to till 35 ± 5 ℃.Then measuring tube is put into the cooling device with semiconductor refrigerating.The degree of depth that measuring tube is put into cooling pond should be no less than 70 millimeters.The measuring tube that is placed in the cooling pond is tilted to become 45 degree.The liquid level of this moment is the AB in the accompanying drawing 2.Measure the transmitance of light, and be recorded as initial transmittance.Cooling samples.When near the condensation point that specimen temperature is cooled to expect, the measuring tube that is placed in the cooling pond is tilted to become 45 degree, and heeling condition that will be such maintenance 1 minute.Then measure the transmitance of light, do not have significant change if the transmitance of light is compared with initial value, then measuring tube is returned to vertical position again.Equitemperature continues to reduce by 2 ℃, the measuring tube that is placed in the cooling pond is tilted to become 45 degree, and such heeling condition was kept 1 minute.Then measure the transmitance of light, do not have significant change if the transmitance of light is compared with initial value, then measuring tube is returned to vertical position again.Repeat this experiment, until sharply rising appears in the percent of pass of light, the sample temperature of this moment is solidifying point, as shown in Figure 7.
Claims (15)
1. a device of measuring oil product solidifying point comprises light source, photosensitive detector, cooling device, measuring tube, temperature measuring equipment, temperature recording unit and light transmission rate pen recorder; Measuring tube is placed in the cooling device, and the light that light source sends is placed on measuring tube part in the cooling transposition through shining, and after the light that sees through arrived photosensitive detector, the signal of generation was transferred to the light transmission rate pen recorder; Temperature measuring equipment is placed in the sample in the sample hose, and the signal of generation is transferred to temperature recording unit.
2. a kind of device of measuring oil product solidifying point according to claim 1, it is characterized in that: described light source is visible light source, ultraviolet source or infrared light supply.
3. a kind of device of measuring oil product solidifying point according to claim 2, it is characterized in that: described light source is visible light source.
4. a kind of device of measuring oil product solidifying point according to claim 1, it is characterized in that: the position that shines sample hose of the light of described light source is the triangle scope that liquid level when sample does not solidify when sample hose tilts and the liquid level when solidifying intersect to form, and can not exceed this scope.
5. a kind of device of measuring oil product solidifying point according to claim 1, it is characterized in that: described photosensitive detector is photodiode detector, photomultiplier detector, charge-coupled detector(CCD) CCD or charge-injection detector(CID) CID.
6. a kind of device of measuring oil product solidifying point according to claim 1 is characterized in that: described cooling device comprises semiconductor cooler, with the cooling device of cooling medium as refrigerant.
7. a kind of device of measuring oil product solidifying point according to claim 1 is characterized in that: after the described light that sees through arrives photosensitive detector, input analog to digital conversion circuit after the signal of generation is processed via amplifier and arrive the light transmission rate pen recorder.
8. a kind of device of measuring oil product solidifying point according to claim 1 is characterized in that: input analog to digital conversion circuit arrival temperature recording unit after the signal that described temperature measuring equipment produces is processed via amplifier.
9. a kind of device of measuring oil product solidifying point according to claim 1 is characterized in that: described measuring tube refers to sample hose and the sleeve combination device after together.
10. a kind of device of measuring oil product solidifying point according to claim 9 is characterized in that: 160 ± 10 millimeters of described sample hose height, 1 millimeter of internal diameter 20 scholar, apart from pipe 30 millimeters outer wall place, the end one annular graticule, round bottom are being arranged.
11. a kind of device of measuring oil product solidifying point according to claim 9 is characterized in that: described sleeve pipe is glass bushing, 10 millimeters of height 130 scholars, 2 millimeters of internal diameter 40 scholars, round bottom.
12. a kind of device of measuring oil product solidifying point according to claim 1 is characterized in that: the angle that described measuring tube tilts is the 1-75 degree.
13. a kind of device of measuring oil product solidifying point according to claim 12 is characterized in that: the angle that described measuring tube tilts is 45 degree.
14. a kind of device of measuring oil product solidifying point according to claim 1 is characterized in that: described temperature measuring equipment is thermopair, thermometer.
15. a kind of device of measuring oil product solidifying point according to claim 1 is characterized in that: described temperature recording unit and light transmission rate pen recorder are registering instrument or computing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220342722 CN202854072U (en) | 2012-07-09 | 2012-07-09 | Device for determining freezing point of oil product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220342722 CN202854072U (en) | 2012-07-09 | 2012-07-09 | Device for determining freezing point of oil product |
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| CN202854072U true CN202854072U (en) | 2013-04-03 |
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| CN 201220342722 Expired - Lifetime CN202854072U (en) | 2012-07-09 | 2012-07-09 | Device for determining freezing point of oil product |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108593701A (en) * | 2018-05-22 | 2018-09-28 | 常州大学 | A kind of full-automatic solidification point measurement device and method |
| CN111830076A (en) * | 2019-04-19 | 2020-10-27 | 中国石油化工股份有限公司 | Method and device for detecting crystallization point and/or freezing point |
| CN113866208A (en) * | 2020-06-30 | 2021-12-31 | 中国石油化工股份有限公司 | Method and system for determining condensation point of petroleum product |
| CN114563439A (en) * | 2022-04-08 | 2022-05-31 | 北京华科仪科技股份有限公司 | Pour point and condensation point measuring device |
| CN114563440A (en) * | 2022-04-08 | 2022-05-31 | 北京华科仪科技股份有限公司 | Pour point measuring method |
-
2012
- 2012-07-09 CN CN 201220342722 patent/CN202854072U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108593701A (en) * | 2018-05-22 | 2018-09-28 | 常州大学 | A kind of full-automatic solidification point measurement device and method |
| CN111830076A (en) * | 2019-04-19 | 2020-10-27 | 中国石油化工股份有限公司 | Method and device for detecting crystallization point and/or freezing point |
| CN111830076B (en) * | 2019-04-19 | 2024-03-12 | 中国石油化工股份有限公司 | Method and device for detecting crystallization point and/or freezing point |
| CN113866208A (en) * | 2020-06-30 | 2021-12-31 | 中国石油化工股份有限公司 | Method and system for determining condensation point of petroleum product |
| CN113866208B (en) * | 2020-06-30 | 2023-12-12 | 中国石油化工股份有限公司 | Method and system for determining condensation point of petroleum product |
| CN114563439A (en) * | 2022-04-08 | 2022-05-31 | 北京华科仪科技股份有限公司 | Pour point and condensation point measuring device |
| CN114563440A (en) * | 2022-04-08 | 2022-05-31 | 北京华科仪科技股份有限公司 | Pour point measuring method |
| CN114563440B (en) * | 2022-04-08 | 2023-09-12 | 北京华科仪科技股份有限公司 | Pour point measuring method |
| CN114563439B (en) * | 2022-04-08 | 2023-11-03 | 北京华科仪科技股份有限公司 | Pour point congeals some measuring device |
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Granted publication date: 20130403 |
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