CN103063577B - Low-temperature stability analyzing apparatus for methanol gasoline - Google Patents
Low-temperature stability analyzing apparatus for methanol gasoline Download PDFInfo
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- CN103063577B CN103063577B CN201210575583.1A CN201210575583A CN103063577B CN 103063577 B CN103063577 B CN 103063577B CN 201210575583 A CN201210575583 A CN 201210575583A CN 103063577 B CN103063577 B CN 103063577B
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Abstract
The invention provides a low-temperature stability analyzing apparatus for methanol gasoline. The apparatus comprises: a low temperature bath; a sample holder, wherein the sample holder is arranged at the central part of the low temperature bath, the upper part of the sample holder is provided with a seal cover, and two sides of the sample holder are provided with two corresponding lenses highly pervious to light; a refrigeration compressor which is connected with a refrigeration helix tube located in the low temperature bath; a magnetic stirrer which is mounted at the bottom of the low temperature bath; a circulating pump which is communicated with the low temperature bath through a circulating pipeline; a radiator which is connected with the circulating pipeline; two glass tubes which respectively pass through a through hole in the low temperature bath, wherein one end of each glass tube is in seal connection with the low temperature bath, and the other end of the glass tube is connected with the sample holder; a photosensitive diode which is located out of the through hole at one side of the low temperature bath; a light emitting diode which is located out of the through hole at the other side of the low temperature bath; a lens which is located between the light emitting diode and the through hole at the other side; two temperature sensors; a one-chip microcomputer; and a display screen used for outputting and displaying a minimum temperature for evaluating sample stability.
Description
Technical field
The present invention relates to a kind of methanol gasoline low-temperature stability analytical equipment, in being suitable for, the analysis of low ratio methanol gasoline low-temperature stability detect, be particularly suitable for low ratio methanol gasoline stability analysis, for methanol gasoline low-temperature stability research, detect provide convenience.
Background technology
Along with the minimizing of petroleum reserves and the raising of environmental requirement, the development and utilization New Regenerated energy becomes inexorable trend.Methyl alcohol mixes with a certain proportion of gasoline to obtain as a kind of vehicle used energy to be applied comparatively widely.The advantage of methyl alcohol effectively to improve the octane value of gasoline, and make gasoline combustion more complete, burning efficiency increases, and economy improves, and atmospheric pollution reduces simultaneously; Shortcoming is that the calorific value of methyl alcohol is low, and after methyl alcohol is mixed into gasoline in a large number, easily producing vapour lock affects fuel feeding, and changing component oil composition can effectively address this problem; Methyl alcohol to engine particularly piston ring and the sealing system such as cylinder wall, oil pump easily produce corrosion and the harmful effect such as wearing and tearing, for this problem, adding functional additive can be solved.
Great mass of data has proved that methyl alcohol is the most promising near, mid-term and one of the spatter property alternative fuel of realistic meaning.The polarity spectrum of methyl alcohol and gasoline is comparatively large, and the two not easily mixes, particularly under cryogenic.Therefore accurately Fast Measurement methanol gasoline phase separation temperature is particularly important.For the needs meeting experimental study and apply, it is necessary for developing a kind of special purpose device quick and precisely testing methanol gasoline phase separation temperature.
At present, the method that mensuration methanol gasoline general in methanol gasoline industry is separated is that methanol gasoline sample to be measured is put into transparent vitreous container, with the plug sealing that thermometer is housed, then sample is put into the bath of low temperature refrigerator, refrigerator-freezer or other low temperature.After a period of time, take out specimen test product, at room temperature heat up and rock vial, until in bottle after sample clear, recording thermometer displays temperature is sample phase separation temperature.This assay method limits by refrigerator refrigerating speed, and finding speed is slower; Affect larger by indoor temperature and sample phase separation temperature difference height.
Summary of the invention
The invention provides a kind of methanol gasoline low-temperature stability analytical equipment, in being suitable for, the analysis of low ratio methanol gasoline low-temperature stability detect, be particularly suitable for low ratio methanol gasoline stability analysis.
Methanol gasoline low-temperature stability analytical equipment of the present invention comprises: light path system, temperature control system, sensor-based system,
Described temperature control system comprises,
A low temperature bath, for placing refrigeration filling, its both sides are provided with corresponding through hole;
A magnetic stirring apparatus, is arranged on bottom low temperature bath, for testing sample in stirred sample pond;
A sample cell, is arranged in the middle part of low temperature bath, the top of magnetic stirring apparatus, its top is provided with gland bonnet, both sides are provided with corresponding two panels for observing the high transmission lens reacted in sample cell;
A refrigeration spiral pipe, is positioned at low temperature bath, and described refrigeration spiral pipe connects the refrigeration compressor being used for the cooling of low temperature bath;
, a circulation line, described circulation line is connected with for the ebullator of medium circulation flowing in low temperature bath and the heating radiator for medium intensification in circulation line;
Described light path system comprises,
Two glass tubes, are each passed through the through hole on described low temperature bath, and glass tube one end and low temperature bath are tightly connected, and the other end and sample cell are tightly connected;
A photodiode, the outside of position low temperature bath one side through hole, for detecting through sample cell intensity variation;
A light emitting diode, the outside of position low temperature bath opposite side through hole, as detection light source;
Lens, between light emitting diode and opposite side through hole, for changing source light into directional light;
Described light emitting diode, lens, photodiode and described glass tube, described high transmission lens is positioned on same axis;
Shown sensor-based system comprises,
Two temperature sensors, are respectively used to measure the temperature in low temperature bath and sample cell;
A single-chip microcomputer, for the treatment of the signal of temperature sensor and photodiode, and outputs signal to display screen;
A display screen, for the minimum temperature that output display assess sample is stable.
Further, connected by silicone rubber tube between refrigeration spiral pipe of the present invention and refrigeration compressor.The outside surrounding of described low temperature bath, is provided with one deck polyurethane heat insulation material as isothermal holding.Described sample cell is glass material column, base diameter 30mm, high 80 mm.Described glass tube two ends are tightly connected with low temperature bath and sample cell respectively by glass flange and silicone rubber O-ring.Also comprising an electric mixer, for stirring medium in low temperature bath, making homogeneous temperature in system.The diameter of glass tube is 12 ~ 15mm.Have two glass tubules to reach bottom sample cell through the gland bonnet of sample cell, the upper end of two glass tubules is connected to sample introduction peristaltic pump and goes out sample peristaltic pump, for sample introduction, discharges sample cell liquid.Described gland bonnet is provided with a logical air pipe, logical air pipe connects one and absorbs silica dehydrator tower.The diameter of described high transmission lens, glass tube internal diameter, lens diameter, glass flange internal diameter size are identical.
Beneficial effect of the present invention is that robotization, detection speed are fast, easy to use.Inspection work for methanol gasoline provides a new shortcut, for the inspection work of product quality provides strong guarantee.
Accompanying drawing explanation
Fig. 1 is the structural representation of methanol gasoline low-temperature stability analytical equipment of the present invention.
Embodiment
The structure of methanol gasoline low-temperature stability analytical equipment as shown in Figure 1, comprises, low temperature bath 1, and for placing refrigeration filling, its both sides are provided with corresponding through hole 2; For laying the glass tube 4 connecting sample cell 3.In the outside surrounding of low temperature bath 1, one deck polyurethane heat insulation material can be provided with as isothermal holding.
Sample cell 3 is glass material column, base diameter 30mm, high 80 mm.Be arranged in the middle part of low temperature bath 1, its top is provided with gland bonnet 18, both sides are provided with corresponding two panels high transmission lens 6, the reaction in sample cell 3 can be observed by high transmission lens 6; Gland bonnet 18 is provided with a logical air pipe 19, and logical air pipe 19 connects one and absorbs silica dehydrator tower 20.The diameter of described high transmission lens 6, glass tube 4 internal diameter, lens 14 diameter, glass flange internal diameter size are identical.
Refrigeration compressor 7, is connected with the refrigeration spiral pipe 8 being positioned at low temperature bath 1, lowers the temperature for low temperature bath 1, requires that minimum temperature can reach-60 DEG C; Connected by silicone rubber tube between refrigeration spiral pipe 8 and refrigeration compressor 7.
Magnetic stirring apparatus 9, is arranged on bottom low temperature bath 1, for testing sample in stirred sample pond 3.
Ebullator 10, by circulation line 5 UNICOM low temperature bath 1, for circulating of medium in low temperature bath 1.
Heating radiator 11, is furnished with fan, 1000W heating power, and it connects circulation line 5, heats up for medium in circulation line 5.
Two glass tubes 4, diameter is 12 ~ 15mm, is each passed through the through hole 2 on low temperature bath 1, and glass tube 4 one end and low temperature bath 1 are tightly connected, and the other end and sample cell 3 are tightly connected; Be convenient to source light through low temperature bath 1.Glass tube 4 two ends can be tightly connected with low temperature bath 1 and sample cell 3 respectively by glass flange and silicone rubber O-ring.
Photodiode 12, the outside of position low temperature bath 1 one side through hole 2, for detecting through sample cell 3 intensity variation.
Light emitting diode 13, the outside of position low temperature bath 1 opposite side through hole 2, as detection light source.
Lens 14, between light emitting diode 13 and opposite side through hole 2, for changing source light into directional light.
Light emitting diode 13, lens 14, photodiode 12 and described glass tube 4, described high transmission lens 6 is positioned on same axis; After making light therethrough sample cell 3, spot center falls within photodiode 12 place.
Two temperature sensors 15, are respectively used to measure the temperature in low temperature bath 1 and sample cell 3.
Single-chip microcomputer 16, for the treatment of the signal of temperature sensor 15 and photodiode 12, and outputs signal to display screen 17.
Display screen 17, as output device, for the minimum temperature that output display assess sample is stable.
Electric mixer 21, for stirring medium in low temperature bath, makes homogeneous temperature in system.
Have two glass tubules 22 to reach bottom sample cell through the gland bonnet 18 of sample cell 3, the upper end of two glass tubules 22 is connected to sample introduction peristaltic pump 23 and goes out sample peristaltic pump 24, for sample introduction, discharges sample cell liquid.
Methanol gasoline low-temperature stability analytical equipment method of operating is as follows: in cryostat, add absolute ethyl alcohol, and liquid level should higher than spiral pipe 8.
Open the power supply of electric mixer 21, refrigeration compressor 7, minimum temperature-45 DEG C is set.
When low temperature bath 1 temperature is reduced to 0 DEG C, open light emitting diode 13, sample introduction peristaltic pump 23, arrange sampling volume 35 ~ 45mL, sample introduction also opens magnetic stirring apparatus 9.
Sample minimum steady fixed temperature is read and record according to being reflected in display screen 17.
Close refrigeration compressor 7, ON cycle pump 10, arranges temp controlled meter temperature 5 DEG C, and at this moment heating radiator 11 blower fan heater switch is also opened simultaneously.
Open sample and go out sample peristaltic pump 24, withdrawal volume 40 ~ 50mL is set and discharges sample in sample cell.
When temperature reaches 0 ~ 5 DEG C in low temperature bath 1, sample introduction peristaltic pump 23 can be opened, sample introduction, then open out sample peristaltic pump 24, circulate 2 to 3 times, cleaning sample cell 3.
Close ebullator 10, open refrigeration compressor 7, sample introduction starts to measure.
Mensuration work completes, and first can clean sample cell 3 once with toluene, then cleans twice with the sherwood oil of boiling point at 60 ~ 90 DEG C.
Claims (10)
1. a methanol gasoline low-temperature stability analytical equipment, is made up of light path system, temperature control system, sensor-based system;
Described temperature control system comprises,
A low temperature bath, for placing refrigeration filling, its both sides are provided with corresponding through hole;
A magnetic stirring apparatus, is arranged on bottom low temperature bath, for testing sample in stirred sample pond;
A sample cell, is arranged in the middle part of low temperature bath, the top of magnetic stirring apparatus, its top is provided with gland bonnet, both sides are provided with corresponding two panels for observing the high transmission lens reacted in sample cell;
A refrigeration spiral pipe, is positioned at low temperature bath, and described refrigeration spiral pipe connects the refrigeration compressor being used for the cooling of low temperature bath;
, a circulation line, described circulation line is connected with for the ebullator of medium circulation flowing in low temperature bath and the heating radiator for medium intensification in circulation line;
Described light path system comprises,
Two glass tubes, are each passed through the through hole on described low temperature bath, and glass tube one end and low temperature bath are tightly connected, and the other end and sample cell are tightly connected;
A photodiode, is positioned at the outside of low temperature bath one side through hole, for detecting through sample cell intensity variation;
A light emitting diode, is positioned at the outside of low temperature bath opposite side through hole, as detection light source;
Lens, between light emitting diode and opposite side through hole, for changing source light into directional light;
Described light emitting diode, lens, photodiode and described glass tube, described high transmission lens is positioned on same axis;
Shown sensor-based system comprises,
Two temperature sensors, are respectively used to measure the temperature in low temperature bath and sample cell;
A single-chip microcomputer, for the treatment of the signal of temperature sensor and photodiode, and outputs signal to display screen;
A display screen, for the minimum temperature that output display assess sample is stable.
2. methanol gasoline low-temperature stability analytical equipment according to claim 1, is characterized in that being connected by silicone rubber tube between described refrigeration spiral pipe and refrigeration compressor.
3. methanol gasoline low-temperature stability analytical equipment according to claim 1, is characterized in that the outside surrounding of described low temperature bath, is provided with one deck polyurethane heat insulation material.
4. methanol gasoline low-temperature stability analytical equipment according to claim 1, is characterized in that described sample cell is glass material column, base diameter 30mm, high 80 mm.
5. methanol gasoline low-temperature stability analytical equipment according to claim 1, is characterized in that described glass tube two ends are tightly connected with low temperature bath and sample cell respectively by glass flange and silicone rubber O-ring.
6. methanol gasoline low-temperature stability analytical equipment according to claim 1, is characterized in that also comprising an electric mixer, for stirring medium in low temperature bath.
7. methanol gasoline low-temperature stability analytical equipment according to claim 1, is characterized in that the diameter of described glass tube is 12 ~ 15mm.
8. methanol gasoline low-temperature stability analytical equipment according to claim 1, it is characterized in that having two glass tubules to reach bottom sample cell through the gland bonnet of sample cell, the upper end of two glass tubules is connected to sample introduction peristaltic pump and goes out sample peristaltic pump.
9. methanol gasoline low-temperature stability analytical equipment according to claim 1, is characterized in that described gland bonnet being provided with a logical air pipe, logical air pipe is connected with one and absorbs silica dehydrator tower.
10. methanol gasoline low-temperature stability analytical equipment according to claim 5, is characterized in that the diameter of described high transmission lens, glass tube internal diameter, lens diameter, glass flange internal diameter size are identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210575583.1A CN103063577B (en) | 2012-12-27 | 2012-12-27 | Low-temperature stability analyzing apparatus for methanol gasoline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210575583.1A CN103063577B (en) | 2012-12-27 | 2012-12-27 | Low-temperature stability analyzing apparatus for methanol gasoline |
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| CN103063577A CN103063577A (en) | 2013-04-24 |
| CN103063577B true CN103063577B (en) | 2015-05-13 |
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| CN116068009B (en) * | 2023-01-13 | 2023-11-07 | 苏州瑞孚恒标能源科技有限公司 | Gasoline low-temperature stability analysis device with intelligent monitoring function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS6426128A (en) * | 1987-04-17 | 1989-01-27 | Ngk Spark Plug Co | Detector for fluid mixing ratio of gasoline and alcohol or the like |
| EP0304230A3 (en) * | 1987-08-21 | 1989-12-20 | The British Petroleum Company P.L.C. | Optical measurement method |
| JPH03251745A (en) * | 1990-02-28 | 1991-11-11 | Honda Motor Co Ltd | Detecting method of concentration of methanol |
| CN1344925A (en) * | 2001-11-09 | 2002-04-17 | 湖南力合科技发展有限公司 | General titration and colorimetry reactor |
| CN2689224Y (en) * | 2004-03-04 | 2005-03-30 | 山东省科学院中日友好生物技术研究中心 | Automatic titrating device for detecting reduced sugar |
| CN2824023Y (en) * | 2005-10-11 | 2006-10-04 | 中华人民共和国天津出入境检验检疫局 | Drippoint dynamic tester for lubricating grease |
| CN202548057U (en) * | 2011-12-06 | 2012-11-21 | 广州市怡文环境科技股份有限公司 | Constant-temperature optical fiber colorimetric titration device |
| CN203025089U (en) * | 2012-12-27 | 2013-06-26 | 山西华顿实业有限公司 | Low-temperature stability analysis device for methanol gasoline |
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Effective date of registration: 20160705 Address after: 030006, Wharton building, 88 development road, 12 hi tech Development Zone, Shanxi, Taiyuan Patentee after: Shanxi alcohol ether cleaning fuel industry technology center (Co., Ltd.) Address before: 030006 Shanxi city of Taiyuan province Jinyang street saiding road high tech Zone Wharton building Patentee before: Shanxi Huadun Industry Co., Ltd. |
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Effective date of registration: 20190717 Address after: Room 410, Office Building, Venous Industry Park, Zhenjiang New District, Jiangsu Province Patentee after: CRPC Innovation Energy Co., Ltd. Address before: 030006, Wharton building, 88 development road, 12 hi tech Development Zone, Shanxi, Taiyuan Patentee before: Shanxi alcohol ether cleaning fuel industry technology center (Co., Ltd.) |