CN103837695A - Automatic sample injection apparatus of acid value determinator - Google Patents
Automatic sample injection apparatus of acid value determinator Download PDFInfo
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- CN103837695A CN103837695A CN201210470461.6A CN201210470461A CN103837695A CN 103837695 A CN103837695 A CN 103837695A CN 201210470461 A CN201210470461 A CN 201210470461A CN 103837695 A CN103837695 A CN 103837695A
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Abstract
The present invention discloses an automatic sample injection apparatus of an acid value determinator. The concrete structure of the automatic sample injection apparatus comprises a groove-shaped detection box and a groove-shaped detection box cover plate, wherein a sample loading table is arranged on the bottom plate of the detection box and is provided with an automatic sample injection cup, the detection box cover plate outer side vertically above the sample loading table is provided with a detection reagent port, a sample injection port, pH value adjustment agent ports, a pH electrode probe socket and an electronic display screen, the detection box cover plate inner side positioned vertically above the sample loading table is provided with a detection spraying port matched with the detection reagent port, the sample injection port and the pH value adjustment agent ports, the electronic display screen is integrated on the detection box cover plate, is connected with a single chip microcomputer, and outputs the calculation result, the position vertically below the sample loading table is provided with a magnetic force stirrer, the upper portion of the automatic sample injection cup is provided with a plurality of detection cups along the periphery edge, and the center of the bottom is provided with a bearing. According to the present invention, characteristics of application of common used simple equipment, no requirement of special experimental conditions, simple operation, good repeatability, wide application range and wide application prospects are provided.
Description
Technical field
The invention belongs to electrochemical analytical instrument apparatus field, be specifically related to a kind of acid value tester automatic sampling apparatus.
Background technology
There are different difference in the main standard method of measuring oil and petroleum products acid number both at home and abroad, respectively there is feature, at present, select the principle of distinct methods according to different samples, relate to the method for oil and petroleum products acid number, main employing with the corresponding GB/T12574 of international standard measured jet fuel acid number, and GB/T4945 measures the acid number of lubricating oil, and GB/T7304 measures the acid number of crude oil, residual oil and other petroleum products.Gasoline, the diesel product standard of China also do not have in line with international standards before, temporarily adopt GB/T258 to measure the acidity of gasoline, diesel product.China is energy-consuming big country, and the energy demand of China is by long-term sustainable growth.Along with China's oil resource scarcity, the energy was in an emergency in recent years, and the exploitation collection utilization of oil is called scientific worker's the task of top priority.The method that China measures oil product acid number at present has GB/T264, GB/T258(acidity), GB/T7304, GB/T4945, GB/T12574, GB/T18609 etc. are several, application has GB/T264 and GB/T7304 more widely, is all the analysis of carrying out oil product acid number based on the principle of non-water acid base titration; GB/T264 is indicator titration method, and the measuring principle of GB/T264 standard acid value measuring method is: in and the required potassium hydroxide milligram number of 1g petroleum products be called acid number.This method is extracted the acid ingredient in sample out with boiling ethanol, then carries out titration with potassium hydroxide-ethanol solution.Due to device simple, manual operations, is widely used in the acid value measuring of crude oil processing middle control analysis and product oil, but need to adds hot reflux titration while hot, meanwhile, is not suitable for the analysis that contains adjuvant and Dark-colored Oil.In order to adapt to the demand in scientific research or actual testing, the present invention intends the determining instrument of oil and petroleum products acid number to improve.
Summary of the invention
The present invention, for solving the problems of the technologies described above, is mainly to develop for the limitation of GB/T264 standard acid value measuring method.The technical scheme adopting is: a kind of acid value tester automatic sample feeding device automatic sampling apparatus is provided, and its concrete structure is:
The flute profile that comprises a upper opening detects casing, and the flute profile detection case cover plate of tight leakproof fit lower opening with it, and detecting on the base plate of casing, load sample platform is set, and the auto injection cup of Detachable is set on load sample platform;
The detection case cover plate outside that is positioned at the vertical direction of load sample platform, arranges and detects reagent mouth, adding mouth, pH adjusting agent mouth, pH electrode probe socket and electronic display;
Be positioned at the detection case cover plate inner side of the vertical direction of load sample platform, the detection spout matching be set with application of sample in auto injection cup with detection reagent mouth, adding mouth, pH adjusting agent mouth;
An integrated electronic display on detection case cover plate, it is connected with single-chip microcomputer, output operation result;
The vertical lower of load sample platform arranges magnetic stirring apparatus;
The top of auto injection cup arranges some detection cups along edge, in the bottom centre of auto injection cup, bearing is set.
In technical scheme mentioned above, preferably embodiment is: magnetic stirring apparatus is made up of revolution regulon and Timing unit.
In technical scheme mentioned above, preferably embodiment is: the bayonet socket that is provided for fixing auto injection cup on load sample platform.
In technical scheme mentioned above, preferably embodiment is: Single-chip Controlling detects the rotation of cup and the dosage of reagent.
Single-chip microcomputer can calculate, record testing result, output analysis detecting data; Single-chip microcomputer can also be realized storage, statistics, compares and analyze the data result of surveying.
Character of innovation of the present invention is:
This analyzer simple in equipment, ambient operation, avoids adding the operation of hot reflux titration while hot, has shortened the sample determination time, meanwhile, is applicable to the analysis that contains adjuvant and Dark-colored Oil.Can be widely used in the acid value measuring of crude oil processing middle control analysis and product oil.
Accompanying drawing explanation
Fig. 1: acid value tester automatic sample feeding device schematic diagram;
Fig. 2: acid value tester automatic sample feeding device flute profile detects casing schematic diagram;
Fig. 3: the detection cup schematic diagram of acid value tester automatic sample feeding device;
Wherein, 1. flute profile detects casing; 2. detection case cover plate; 3. load sample platform; 4. detect reagent mouth; 5. adding mouth; 6.pH correctives mouth; 7.pH electrode probe socket; 8. electronic display; 9. magnetic stirring apparatus; 10. single-chip microcomputer; 11. auto injection cups; 12. bearings; 13. detect cup.
Embodiment
Following non-limiting example can make the present invention of those of ordinary skill in the art's comprehend, but does not limit the present invention in any way.
The solution relating in method described in the embodiment of the present invention is formulated by commercial sources acquisition or conventional method.
Measure the method for oil product acid number: on the load sample platform 3 on the base plate that detects casing 1, place clean auto injection cup 11, the adding mouth 5 of detection case cover plate 2 arranged outside of the vertical direction by load sample platform 3 adds the ethanol water that contains methyldiethanolamine and potassium nitrate in the detection cup 13 of clean auto injection cup 11; Detecting cup 13 can be suitable along bearing 12/be rotated counterclockwise; In pH adjusting agent mouth 6, the electronic display 8 in detection case cover plate 2 outsides is controlled automatically, in each detection cup 13, press respectively predefined amount in single-chip microcomputer 10, add following reagent: adjust pH with potassium hydroxide, detection case cover plate 2 inner sides, the detection spout that setting matches is with application of sample in auto injection cup 11, recycling pH adjusting agent mouth 6, pH electrode probe socket 7, in the solvent making, insert pH glass electrode, the vertical lower of load sample platform 3 arranges magnetic stirring apparatus 9, passes through to regulate revolution regulon and Timing unit; Thereby stir and record pH
just; Draw oil sample, from detecting reagent mouth 4, adding to above-mentioned solvent, after stirring, pH declines, and drips standard base (SB) titrant Cs, pH is risen to and pH again
justunanimously, difference be no more than ± 0.01 for terminal, amount to the volume of quota of expenditure alkalimetric titration agent, by formula: volume/oil sample Mass Calculation of oil product total acid number=56.11 × Cs × standard base (SB) titrant.Detection case cover plate integrated electronic display screen 8, it is connected with single-chip microcomputer 10, output operation result.
Detect cup 13 number also can according to detect sample number replace; The rotation of detection cup 13 and reagent add by single-chip microcomputer 10 to be controlled, detect cup 13 number can according to the size of load sample platform 3 or sample number, be arranged to plurality of specifications, in the time that testing sample is many, can, without open detection cover plate 2, once complete the continuous detecting of multiple samples; Meanwhile, record testing result by single-chip microcomputer 10, output recording detection data; Single-chip microcomputer 10 can also be realized storage, statistics, compares and analyze the data result of surveying.
Device of the present invention can allow user control easily whole operating process; Directly read operation result, when having shortened the sample determination time, equipment of the present invention is applicable to the analysis that contains adjuvant and Dark-colored Oil.Can be widely used in the acid value measuring of crude oil processing middle control analysis and product oil.
Claims (4)
1. an acid value tester automatic sampling apparatus, is characterized in that: concrete structure is:
The flute profile that comprises a upper opening detects casing (1), the flute profile detection case cover plate (2) of tight leakproof fit lower opening with it, and detecting on the base plate of casing (1), load sample platform (3) is set, the auto injection cup (11) of Detachable is set on load sample platform (3);
Detection case cover plate (2) outside that is positioned at the vertical direction of load sample platform (3), arranges and detects reagent mouth (4), adding mouth (5), pH adjusting agent mouth (6), pH electrode probe socket (7) and electronic display (8);
Be positioned at detection case cover plate (2) inner side of the vertical direction of load sample platform (3), the detection spout matching be set with application of sample in auto injection cup (11) with detection reagent mouth (4), adding mouth (5), pH adjusting agent mouth (6);
The upper integrated electronic display (8) of detection case cover plate (2), it is connected with single-chip microcomputer (10), output operation result;
The vertical lower of load sample platform (3) arranges magnetic stirring apparatus (9);
The top of auto injection cup (11) arranges some detection cups (13) along edge, in the bottom centre of auto injection cup (11), bearing (12) is set.
2. acid value tester automatic sampling apparatus according to claim 1, is characterized in that: magnetic stirring apparatus (9) is made up of revolution regulon and Timing unit.
3. acid value tester automatic sampling apparatus according to claim 1, is characterized in that: the bayonet socket that is provided for fixing auto injection cup (11) on load sample platform (3).
4. acid value tester automatic sampling apparatus according to claim 1, is characterized in that: single-chip microcomputer (10) is controlled and detected the cup rotation of (13) and the dosage of reagent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210470461.6A CN103837695A (en) | 2012-11-20 | 2012-11-20 | Automatic sample injection apparatus of acid value determinator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210470461.6A CN103837695A (en) | 2012-11-20 | 2012-11-20 | Automatic sample injection apparatus of acid value determinator |
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| Publication Number | Publication Date |
|---|---|
| CN103837695A true CN103837695A (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210470461.6A Pending CN103837695A (en) | 2012-11-20 | 2012-11-20 | Automatic sample injection apparatus of acid value determinator |
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| CN (1) | CN103837695A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424870A (en) * | 2015-11-20 | 2016-03-23 | 武汉钢铁(集团)公司 | Acid value and acidity measuring device for petroleum products |
-
2012
- 2012-11-20 CN CN201210470461.6A patent/CN103837695A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424870A (en) * | 2015-11-20 | 2016-03-23 | 武汉钢铁(集团)公司 | Acid value and acidity measuring device for petroleum products |
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Application publication date: 20140604 |