CN101666759A - Method and device for quick detecting gasoline cleanliness - Google Patents
Method and device for quick detecting gasoline cleanliness Download PDFInfo
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- CN101666759A CN101666759A CN 200910093321 CN200910093321A CN101666759A CN 101666759 A CN101666759 A CN 101666759A CN 200910093321 CN200910093321 CN 200910093321 CN 200910093321 A CN200910093321 A CN 200910093321A CN 101666759 A CN101666759 A CN 101666759A
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Abstract
The invention discloses a method and a device for quick detecting gasoline cleanliness, which comprises the following steps: transporting various types of gasoline to a nozzle through a metering pumpso as to mix with air; then spraying to a sediment collector which is heated to an experiment temperature; simulating the generation of a sediment of a gasoline engine air intake valve; carrying out qualitative analysis and quantitative analysis on pictures and colors of the sediment on the collector by a computer image identification system so as to identify the cleanliness of the gasoline. The invention can better simulate an M111 bench test method and has good consistency with an L-2 gasoline engine air intake valve sediment simulation test machine. The invention has the advantages of testcost saving, quick and visual test process, simple and convenient operation, and accurate detection result without being measured by a balance, and is particularly suitable for vibrating places of vehicle-mounted moving detection. The invention can not only test the cleanliness of gasoline detergent, but also test the cleanliness of the gasoline, which is suitable for the environmental protectiondepartment and the technical supervision department to carry out an on-site test on the cleanliness of the sold gasoline in the oil depot and gasoline station.
Description
Technical field
The invention belongs to the Motor Vehicle Pollution Prevention technical field, particularly a kind of gasoline cleanliness method for quick and equipment thereof.
Background technology
Increase along with each urban automobile quantity of China is anxious, country is to energy-saving and emission-reduction work pay attention to day by day, and is also more and more higher to the requirement of motor vehicle exhaust emission, reaches under Europe IV, the Euro V emissions situation in the motor vehicle manufacturing technology, as the gasoline of one of fuel for motor vehicle, its clean-up performance is just particularly important.Domestic present situation is to reach the state IV standards except that Beijing, Shanghai, area, Pearl River Delta require marketable gasolines at present, and other cities and regional major part are also at country of sale II normal benzine.High more its peace and quiet degree of the standard of automobile is high more, and the sediment that engine intake valve and firing chamber produce is few more, and engine just can keep operate as normal, and the pollutant of motor vehicle exhaust emission is just few more.
In American-European developed country, gasoline standard has reached the above standard of Europe V, but in order further to improve the peace and quiet degree of gasoline, statutory regulation also need add detersive in motor petrol, the vehicle exhaust blowdown is controlled in the littler scope.Several years ago China adds gasoline cleaning agent in the tentative marketable gasolines in some big and medium-sized cities, some positive effects have been obtained, also expedited the emergence of the enterprise of a lot of production detersives thus, because market disappearance field monitoring detersive quality and gasoline cleaning degree methods and equipment, cause society to go up a lot of people and query whether added detersive in the gasoline, and whether the detersive that adds is effective.
At present, gasoline detects in China and the gasoline cleaning degree methods has two kinds, a kind of is the bench test of benz M111 standard, be mainly used in the detergency that detects gasoline cleaning agent, judge by the sediment quality of weighing engine intake valve and firing chamber whether the detersive sample can be by bench test.Bench test equipment is expensive and time-consuming, and the cost height needs special platform experiment chamber and technical professional to operate.Can only detect as the access of detersive, and can not do the conventional sense of gasoline and detersive.Another kind is L-2 gasoline engine gas admittance valve sediment simulation test machine (a GB19592-2004 appendix B appointed product), and this simulation test machine can be operated in the laboratory, save time, expense is low, simple to operate, with the M111 bench test good correlativity is arranged.It weighs the peace and quiet degree of gasoline and detersive by the sediment quality on the weighing gatherer.Can be used as the conventional sense of gasoline cleanliness and as the measuring means of detersive research and development, product quality.But this method is subjected to the restriction that test findings needs the weighing of ten thousand/balance, and test needs 2 hours at every turn, and each test can only be made a sample, can't be used on the vehicle-mounted fast detecting equipment.
Summary of the invention
The purpose of this invention is to provide a kind of gasoline cleanliness method for quick and equipment, with solve the detection time that traditional method and apparatus exists long, complicated operation and inconvenience, detect the cost height, be not easy to realize vehicle-mounted, be not easy to the technical matters that field monitoring gasoline cleanliness and each test can only be made a sample.
For achieving the above object, the technical scheme taked of the present invention is:
A kind of hyperchannel gasoline cleanliness method for quick may further comprise the steps:
1. the sediment trap of single or multiple cleanings vertically is placed on the dead ahead of three nozzles respectively;
2. single or multiple sediment traps are heated to simultaneously 180 ℃～190 ℃ working temperature;
3. gasoline is ejected on the workplace of each sediment trap with the speed of 3～5mL/min, forms the oil film similar to the nozzle ejection shape;
4. stop oil spout after 7～13 minutes, after gatherer is warming up to 215 ℃～220 ℃, carry out 5～10 minutes high-temperature baking, the oil film on the sediment trap workplace is under the baking of high temperature, and oxidation generates paint film; (shade of paint film is directly proportional with the content of alkene in the gasoline, and promptly state IV steam oil ratio (SOR) state II content of olefin in gasoline is few, and paint film color is much also shallow);
5. sediment trap being put into petrolic solvent soaked 50～90 seconds, (these oil films are after having added effective detersive in the gasoline to dissolve some oil films that do not form paint film, be diffusion type and be suspended on the gatherer workplace, though, do not generate paint film) through high-temperature oxydation;
6. the sediment trap scanner scanning figure after will soaking, and, judge the peace and quiet degree of gasoline sample automatically via the computer picture recognition system scoring that the test contrast scans figure of importing in advance constitutes, and whether qualified.
Above-mentioned petrolic solvent is a normal heptane.
A kind of equipment of realizing above-mentioned hyperchannel gasoline cleanliness method for quick, in it detects cover, one or several supports are installed side by side, place sediment trap on the support, the back side of sediment trap is provided with well heater, spring device is pressed together both, the sediment trap workplace vertically is placed on the dead ahead of nozzle, one or several nozzles outside detecting cover by the gatherer oil spout of nozzle bore to correspondence, the spray shapes of nozzle is covering of the fan, and the detection cover goes up and the corresponding end of nozzle is provided with axial flow blower; Gasoline is through volume pump metering and supply nozzle, and pressurized air mixes the back with gasoline and sprays atomizing oil gas after the flowmeter metering in nozzle; Above-mentioned one or several sediment traps, well heater and volume pump link to each other with automatic control system.
The equipment of above-mentioned gasoline cleanliness method for quick comprises following control system: the temperature control subsystem of gatherer, the overtemperature prote control subsystem of well heater, automatic oil spout, baking and auto stop programmed control subsystem automatically.
Above-mentioned hyperchannel gasoline cleanliness method for quick provided by the invention and equipment thereof are in analog gasoline engine intake valve working condition and generate on the basis of sedimental mechanism and obtain.The gasoline sample scoring that detects with this method has good correlativity with petrol engine Ml11 bench test method (GB/T 19320.5) gas admittance valve sediment weight, and good correlativity is also arranged with the L-2 simulation test machine, and detection time is short, can carry out the detection of three samples simultaneously, each sample only needs 60mL gasoline, has only 1/4th of L-2 gasoline engine gas admittance valve sediment simulation test machine detection time; Testing expenses are low, and equipment investment is little, and are easy and simple to handle; Owing to adopted the computer picture recognition system that gatherer is marked, this equipment configuration be achieved to the mobile monitoring car.Testing result has good differentiation and repeatability.For the monitoring of marketable gasolines detergency quality provides a kind of practicable on-the-spot real-time watch device and method.
Description of drawings
Fig. 1 forms synoptic diagram for the structure of gasoline cleanliness fast detecting equipment of the present invention;
Fig. 2 is the correlationship figure of gasoline cleanliness fast detecting scoring of the present invention with L-2 gasoline engine gas admittance valve sediment simulation test machine sediment weight.
Among the figure: 1-sediment trap; 2-well heater; 3-clamp system; 4-nozzle; 5-oil pipe; 6-gasoline container; 7-volume pump; 8-tracheae; 9-spinner-type flowmeter; 10-reduction valve; 11-source of the gas; 12-axial flow blower; 13-automatic control system; 14-detect and cover; 15-gatherer temperature control subsystem; 16-well heater overtemperature prote control subsystem; 17-programmed control subsystem; 18-support.
Embodiment
Equipment of the present invention is formed as shown in Figure 1; in the embodiment of hyperchannel gasoline cleanliness fast detecting equipment provided by the invention; its sediment trap 1 back side and well heater 2 are front and back position and are placed on the support 18; clamp system 3 holds out against well heater 2 on sediment trap 1; sediment trap 1, well heater 2 link to each other with self-actuated controller 13, and gatherer temperature control subsystem 15, well heater overtemperature prote control subsystem 16 and programmed control subsystem 17 are arranged in the self-actuated controller 13.The both sides end face of sediment trap 1 is trapezoidal.That well heater 2 can adopt is plate, L type, △ type, semi-circular or ladder type.Clamp system 3 utilizes the tension force of spring to hold out against well heater 2 and sediment trap 1, also can use screw-clamped.Nozzle 4 has two inlets, an inlet input gasoline, and process is that the gasoline in the gasoline container 6 enters nozzle 4 by oil pipe 5 after volume pump 7 extracts; Another inlet input pressurized air, process is the pressurized air that comes out from source of the gas 11, reduces pressure through reduction valve 10, after passing sub-flowmeter metering, enters nozzle 4 by tracheae 8 again.Pressurized air and gasoline mix in nozzle 4, are the atomizing shape and are sprayed onto continuously on the heated sediment trap 1.Volume pump 7 has guaranteed the steady, accurate of flow, and volume pump 7 can be syringe pump, peristaltic pump, constant-flux pump or infusion pump.Above-mentioned sediment trap 1, well heater 2, step up mechanism 3 and be contained in one and detect in the cover 14, detect the air admission hole that cover 14 positive fronts have three Φ 35～Φ 45mm.Nozzle 4 is contained in the middle of the air admission hole, and nozzle 4 is relative with sediment trap 1 workplace center, detects the back of cover 14 axial flow blower 12 has been installed, and gets rid of and detects unnecessary gas-oil mixture in the cover.Because China refuelling station gasoline kind is generally three, such as, 90
#, 93
#, 98
#So three passages are selected in the invention that this case is implemented.
Utilize the said equipment to carry out the gasoline cleanliness fast detecting below, its step comprises:
1. earlier with sherwood oil cotton balls wiping sediment trap, with the polishing felt polishing, do not have dirt up to any surface finish again, be put in the baking oven after the water flushing and dry, taking-up is placed in the special box standby;
2. three sediment traps are put into successively and detected on the cover medium-height trestle, clamp, be warmed up to 180～190 ℃ test temperature with well heater;
3. the 0.12Mpa that pressurized air reduced pressure, three tunnel air mass flows are controlled at 700L/h by spinner-type flowmeter respectively, give three nozzle air feed;
4. volume pump is at the uniform velocity given three nozzle fuel feeding with 4ml/min speed, sprays to the sediment trap that arrives test temperature after oil gas mixes in nozzle;
5. equipment is under the control of automatic control system, and order finished intensifications-constant temperature-jet-oil spout 10 minutes-stop 215～220 ℃ of programs of toasting 5 minutes-auto stop of oil spout-high temperature; Oil film on the sediment trap workplace is under the baking of high temperature, and oxidation generates paint film.(shade of paint film is directly proportional with the content of alkene in the gasoline, and promptly state IV steam oil ratio (SOR) state II content of olefin in gasoline is few, and paint film color is much also shallow);
6. sediment trap is put into normal heptane solvent and soaked about 1 minute, will be suspended in collector surface can dissolved substances dissolve; (these oil films are after having added effective detersive in the gasoline, are diffusion type and are suspended on the gatherer workplace, though through high-temperature oxydation, do not generate paint film)
7. the sediment trap after will soaking is used the scanner scanning figure simultaneously, and the machine image identification system carries out qualitative and quantitative analysis to figure and color as calculated, chooses score value (0～100 minute).Score value is big more, and detergency is good more, and gasoline is peace and quiet more.
Precision (repeatability)
Same operator uses same equipment at same environment, and the difference of two results of replication and its arithmetic mean sees the following form:
| |
Allow difference |
| ??＞50 | 5 minutes |
| ??≤50 | 10 minutes |
Correlativity
72 oil samples of refuelling station detect in the range of Beijing to being collected in to use hyperchannel gasoline cleanliness method for quick and equipment, and done the correlativity investigation with the test findings of L-2 gasoline engine gas admittance valve sediment simulation test machine, both correlationships the results are shown in Figure 2:
As shown in Figure 2, the score value that obtains with this method and equipment and the sediment weight of L-2 gasoline engine gas admittance valve sediment simulation test machine have good correlativity, and related coefficient reaches 0.96.
Claims (4)
1, a kind of gasoline cleanliness method for quick may further comprise the steps:
1. the sediment trap of single or multiple cleanings vertically is placed on the dead ahead of three nozzles respectively;
2. single or multiple sediment traps are heated to simultaneously 180 ℃～190 ℃ working temperature;
3. gasoline is ejected on the workplace of each sediment trap with the speed of 3～5mL/min, forms the oil film similar to the nozzle ejection shape;
4. stop oil spout after 7～13 minutes, after gatherer is warming up to 215 ℃～220 ℃, carry out 5～10 minutes high-temperature baking, the oil film on the sediment trap workplace is under the baking of high temperature, and oxidation generates paint film;
5. sediment trap is put into petrolic solvent and soaked 50～90 seconds, dissolve some oil films that do not form paint film;
6. the sediment trap scanner scanning figure after will soaking, and, judge the peace and quiet degree of gasoline sample automatically via the computer picture recognition system scoring that the test contrast scans figure of importing in advance constitutes, and whether qualified.
2, a kind of gasoline cleanliness method for quick as claimed in claim 1, it is characterized in that: petrolic solvent is a normal heptane.
3, a kind of equipment of realizing above-mentioned hyperchannel gasoline cleanliness method for quick, it is characterized in that: in it detects cover, one or several supports are installed side by side, place sediment trap on the support, the back side of sediment trap is provided with well heater, spring device is pressed together both, the sediment trap workplace vertically is placed on the dead ahead of nozzle, one or several nozzles outside detecting cover by the gatherer oil spout of nozzle bore to correspondence, the spray shapes of nozzle is covering of the fan, and the detection cover goes up and the corresponding end of nozzle is provided with axial flow blower; Gasoline is through volume pump metering and supply nozzle, and pressurized air mixes the back with gasoline and sprays atomizing oil gas after the flowmeter metering in nozzle; Above-mentioned one or several sediment traps, well heater and volume pump link to each other with automatic control system.
4, the equipment of a kind of gasoline cleanliness method for quick as claimed in claim 3 is characterized in that also comprising following control system: the temperature control subsystem of gatherer, the overtemperature prote control subsystem of well heater, automatic oil spout, baking and auto stop programmed control subsystem automatically.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910093321XA CN101666759B (en) | 2009-09-27 | 2009-09-27 | Method for quick detecting gasoline cleanliness |
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|---|---|---|---|
| CN200910093321XA CN101666759B (en) | 2009-09-27 | 2009-09-27 | Method for quick detecting gasoline cleanliness |
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| CN101666759A true CN101666759A (en) | 2010-03-10 |
| CN101666759B CN101666759B (en) | 2011-06-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808590A (en) * | 2013-10-10 | 2014-05-21 | 马勒技术投资(中国）有限公司 | Device and method for testing fine oil mist separation efficiency |
| CN106596585A (en) * | 2016-12-14 | 2017-04-26 | 立邦涂料(成都)有限公司 | Quick detection method of emulsion paint film cracking |
| CN107478775A (en) * | 2017-08-04 | 2017-12-15 | 天津悦泰石化科技有限公司 | A kind of detection method of petrol engine air admission valve deposits cleaning rate |
| CN112985872A (en) * | 2021-05-20 | 2021-06-18 | 成都康拓兴业科技有限责任公司 | Oil mist separation and transportation test bed and test method of aviation oil mist separator |
-
2009
- 2009-09-27 CN CN200910093321XA patent/CN101666759B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808590A (en) * | 2013-10-10 | 2014-05-21 | 马勒技术投资(中国）有限公司 | Device and method for testing fine oil mist separation efficiency |
| CN103808590B (en) * | 2013-10-10 | 2017-01-18 | 马勒技术投资(中国）有限公司 | Method for testing fine oil mist separation efficiency |
| CN106596585A (en) * | 2016-12-14 | 2017-04-26 | 立邦涂料(成都)有限公司 | Quick detection method of emulsion paint film cracking |
| CN107478775A (en) * | 2017-08-04 | 2017-12-15 | 天津悦泰石化科技有限公司 | A kind of detection method of petrol engine air admission valve deposits cleaning rate |
| CN112985872A (en) * | 2021-05-20 | 2021-06-18 | 成都康拓兴业科技有限责任公司 | Oil mist separation and transportation test bed and test method of aviation oil mist separator |
| CN112985872B (en) * | 2021-05-20 | 2021-08-17 | 成都康拓兴业科技有限责任公司 | Oil mist separation and transportation test bed and test method of aviation oil mist separator |
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|---|---|
| CN101666759B (en) | 2011-06-29 |
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