CN104454101A - Multi-channel detection device for automobile exhaust purifiers - Google Patents
Multi-channel detection device for automobile exhaust purifiers Download PDFInfo
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- CN104454101A CN104454101A CN201410619498.XA CN201410619498A CN104454101A CN 104454101 A CN104454101 A CN 104454101A CN 201410619498 A CN201410619498 A CN 201410619498A CN 104454101 A CN104454101 A CN 104454101A
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- exhaust
- purifier
- exhaust purifier
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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Abstract
The invention discloses a multi-channel detection device for automobile exhaust purifiers. The multi-channel detection device comprises a gas delivery pipe used for being connected with an automobile exhaust outlet. A plurality of detection branches each formed by connecting a stop valve, one exhaust purifier, an air filter, a dryer and a flow controller in series through pipes are connected to the gas delivery pipe in parallel, the output ends of the flow controllers in the detection branches are connected to an exhaust analyzer, and a gas discharging pipe is connected to the output end of the exhaust analyzer. The pipes connected with the output ends of the stop valves in the detection circuits penetrate through a temperature control box to be connected with the corresponding exhaust purifiers, and the pipes connected with the output ends of the exhaust purifiers in the detection branches penetrate through a condenser to be connected with the corresponding air filters. By means of the multi-channel detection device, the catalyzing performance of the multiple exhaust purifiers small in size under the same condition can be compared in real time, testing and performance evaluation can also be carried out on a full-flow catalytic reactor large in size, and the true and accurate detection results can be obtained.
Description
Technical field
The present invention relates to a kind of Multi-channel detecting device for automobile exhaust purifier, the purifier that this device is mainly used in being arranged on vehicle exhaust relief opening carries out testing property, and by analyzing, comparing the evaluation drawn purifier changing effect, to improve working efficiency when people's detection, screening purifier.
Background technique
Along with socioeconomic development, the demand of automobile is surged, I with the annual turnover of automobile close to 2,000 ten thousand, tail gas also one of primary pollution source becoming air of motor vehicle emission simultaneously.In order to reduce the pollution that vehicle exhaust causes, China has formulated strict Abgasgesetz in succession.Wherein, in vehicle exhaust system, installing catalytic cleaner to reduce the discharge of dusty gas in waste gas is one of main solution.
Existing catalytic cleaner normally loads catalyzer in purifier shell, and tail gas during use, automobile being arranged mountain is introduced in purifier, and tail gas is discharged in air after catalyst cleaning process again.At present, equipment for the catalyst performance in test purifier also compares shortage, the general mode of artificial distribution that adopts carries out testing property more, the main harmful gas of motor-vehicle tail-gas is formed by CO, NOx, HC etc., be mixed with the vehicle exhaust of simulation by physical control structure according to certain ratio, again the vehicle exhaust of simulation is input in purifier, finally by the content measuring gas after purifier process being carried out to harmful matter, draw the evaluation to performances such as purifier inner catalyst activity, durability.Although this traditional mode can the performance such as activity, durability of more accurate ground evaluate catalysts; but; the simulated automotive tail gas of artificial preparation needs to configure special source of the gas; require very strict to the flow control of gas; its pipeline configuration and gaseous mass control valve block also more complicated, and higher to gaseous mass purity requirement; In addition, the simulated automotive tail gas of artificial preparation is not the real exhausting air of motor after all, and test result has a narrow limitation far away; In addition, most of catalyst test device has only used a reactant gas source, this relatively single sampling and inlet system, the catalytic performance of a kind of catalyzer under some working conditions can only be tested out at every turn, therefore the efficiency of its screening catalyzer is very low, is generally suitable only for laboratory research and uses.
Summary of the invention
The present invention is directed to and now also there is no a set of deficiency being specifically designed to the equipment detecting automobile exhaust purifier performance at present, introduce one can carry out testing property to multiple exhaust purifier under identical conditions simultaneously, and the more much higher passage detecting device for automobile exhaust purifier of detection efficiency.
Technological scheme of the present invention: a kind of Multi-channel detecting device for automobile exhaust purifier; it is characterized in that; comprise the pneumatic tube for connecting vehicle exhaust relief opening; described gas transmission pipeclay be parallel with some by stop valve, exhaust purifier, air filter, exsiccator and flow dontroller by placed in series after the detection branch that forms; the output terminal of the flow dontroller in described each detection branch is all connected to exhaust gas analyzer, is connected with outlet pipe at the output terminal of described exhaust gas analyzer; The pipeline that the output terminal of the stop valve in described each detection branch connects all connects with corresponding exhaust purifier through temperature control box, and the pipeline that the output terminal of the exhaust purifier in described each detection branch connects all connects with corresponding air filter through condenser; Exhaust purifier in described each bar detection branch is all arranged in HEATING BOX.
In the present invention, different catalyzer can be prepared respectively to carry out testing property in exhaust purifier in each bar detection branch, and the pattern that many detection branch work simultaneously can be adopted, because each bar detection branch is under the effect of temperature control box and condenser, the temperature of catalytic reaction is identical, so just can help the difference of people's compare test result under same environmental conditions, thus fast and easy sieve limit goes out the more excellent exhaust purifier of performance.
More preferably, described pneumatic tube is also connected with an exhaust branch pipe, described exhaust branch pipe is provided with relief valve and silencing apparatus.That installs the day of exhaust branch pipe is that vehicle exhaust is overflowed by relief valve, more emptying after silencing apparatus is eliminated the noise when the tail gas force value of automobile discharge exceedes setting value.Unnecessary tail gas can be drained by exhaust branch pipe, prevent tail gas flow velocity from causing catalytic reaction insufficient too soon, affect testing result, noise pollution when simultaneously silencing apparatus can also reduce exhaust.
More preferably, described pneumatic tube is also parallel with one by the single channel detection branch formed after stop valve, three-way catalytic converter, the gentle series connection of pumps of air filter, described gas delivery side of pump connects the input end of exhaust gas analyzer.Single channel detection branch in the present invention is mainly used in test traffic and all larger catalytic reactor of volume, enters the reacted gas of three-way catalytic converter after air filter filters, then tests by air pump suction exhaust gas analyzer.
Relative to prior art, the present invention has following beneficial effect.
1, multiple independently sense channel is provided with in detection device of the present invention, each sense channel can be installed connection exhaust purifier respectively and carry out independently Performance Detection, thus the object of simultaneously carrying out multiple exhaust purifier testing property can be reached, improve test, the efficiency of screening, and in whole device, owing to have employed all-in-one-piece temperature control box and HEATING BOX, therefore the environmental conditions of each sense channel is substantially identical, thisly under identical conditions, test obtained test result have more comparativity, therefore the evaluation result detected after contrast is also more intuitive and reliable.
2, do not need complicated gas distribution pipeline and control valve block to generate the vehicle exhaust of simulation in the present invention, but directly adopt motor exhaust as detection medium, and utilize multichannel exhaust analyzer to carry out testing result assessment, it both can detect in real time, compare the catalytic performance of the exhaust purifier of multiple small volume under identical conditions, also can the three-way catalytic converter larger to full flow volume test and assess in real time, its Applicable scope is wider, is also conducive to the accuracy improving testing result.
Accompanying drawing explanation
Fig. 1 is the structural representation of detection device of the present invention.
In figure, 1 one vehicle exhaust relief openings, 2 one pneumatic tubes, 3 one stop valves, 4 one temperature control boxs, 5 one exhaust purifiers, 6 one condensers, 7 one air filters, 8 one exsiccators, 9 one flow dontrollers, 10 1 exhaust gas analyzers, 11 1 outlet pipes, 12 1 HEATING BOX, 13 1 relief valves, 14 1 silencing apparatuss, 15 1 heaters, 16 1 frequency conversion radiation fans, 17 semiconductor radiators, 18 1 temp controllers, 19 1 exhaust branch pipes, 20 1 three-way catalytic converter, 21 1 air pumps.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Fig. 1, a kind of Multi-channel detecting device for automobile exhaust purifier, comprise the pneumatic tube 2 for connecting vehicle exhaust relief opening 1, described pneumatic tube 2 is parallel with some by stop valve 3, exhaust purifier 5, air filter 7, exsiccator 8 and the detection branch of flow dontroller 9 by forming after placed in series, the output terminal of the flow dontroller 9 in described each detection branch is all connected to exhaust gas analyzer 10, exhaust gas analyzer 10 in the present invention is the detection analytical equipment of prior art, it by input gas analyze after, the ratio of each composition in output display gas: be provided with multiple independently input interface at the input end of exhaust gas analyzer 10, the testing requirement of many detection branch can be met, outlet pipe 11 is connected with at the output terminal of described exhaust gas analyzer 10, tail gas is discharged in air after outlet pipe 11.In the present invention, the pipeline that the output terminal of the stop valve 3 in described each detection branch connects all connects with corresponding exhaust purifier 5 through temperature control box 4, heater 15 is provided with in the bottom of described temperature control box 4, on the top of described temperature control box 4, frequency conversion radiation fan 16 is installed, thermostatically control can be carried out to the vehicle exhaust of input by temperature control box 4, can ensure that the gas exported meets the reaction temperature requirement of catalyzer like this.The pipeline that the output terminal of the exhaust purifier 5 in described each detection branch connects all connects with corresponding air filter 7 through condenser 6, radiator for semiconductor 17 is provided with and for regulating the temp controller 18 of radiator for semiconductor 17 in described condenser 6, described radiator for semiconductor 17 and temp controller 18 all adopt prior art equipment, during use, in condenser 6, deposit has cooling water, the refrigeration work consumption of radiator for semiconductor 17 can be controlled by temp controller 18, radiator for semiconductor 17 then implements cooling to the cooling water in condenser 6, pipeline in condenser 6 is also synchronously lowered the temperature, thus reach to the object of vehicle exhaust cooling.Better stability can be kept for making the catalytic reaction occurred in exhaust purifier 5, exhaust purifier 5 in each bar detection branch is all arranged in HEATING BOX 12 by the present invention, the control mode of temperature programming can be adopted in HEATING BOX 12, heat temperature raising is carried out to the vehicle exhaust of input, meets the test job under condition of different temperatures.
In the present invention, the quantity configuration scope of detection branch is 1 ~ 15, and in detection branch, the volume requirement of exhaust purifier 5 is more than or equal to 5 ml, if volume is too small, can affect catalytic reaction effect, causes reaction insufficient; If detection branch quantity is too much, can increases, the air pressure in each branch road is reduced, easily causes gas flow rate to slow down the demand of vehicle exhaust, this is unfavorable for improving the efficiency detecting, screen.
During test, the tail gas of motor discharge is introduced into detection device of the present invention through pneumatic tube 2, tail gas is entered after being shunted by stop valve 3 in the temperature control box 4 with heater 15 and frequency conversion radiation fan 16 and carries out thermostatically control, the reaction temperature that object is to make the gas of output to meet catalyzer requires: then gas enters and can carry out catalytic reaction by the exhaust purifier in the HEATING BOX 12 of temperature programming, gas after catalytic reaction enters in condenser 6, cooled by semiconductor heat-dissipating sheet 17 and temp controller 18, gas is more successively through air filter 7 removal of impurity, exsiccator 8 is dry, flow dontroller 9 control flow laggard enter respective channel on multichannel exhaust gas analyzer 10 detect, gas after detection is emptying by outlet pipe 11, exhaust gas analyzer 10 is by testing result output display.
See Fig. 1, described pneumatic tube 2 is also connected with an exhaust branch pipe 19, described exhaust branch pipe 19 is provided with relief valve 13 and silencing apparatus 14, one end connecting gas transmission pipe 2 of exhaust branch pipe 19, the other end is connected with outlet pipe 11.When vehicle exhaust pressure exceedes setting value, relief valve 13 will be opened, and it is emptying that tail gas temperature crosses exhaust branch pipe 19, and due to the effect of silencing apparatus 14, the noise overflowing gas also can be controlled in more among a small circle.
See Fig. 1, described pneumatic tube 2 is also parallel with one by the single channel detection branch formed after stop valve 3, three-way catalytic converter 20, air filter 7 and air pump 21 are connected, the output terminal of described air pump 21 connects the input end of exhaust gas analyzer 10.The effect of described single channel detection branch is the catalytic reactor that test traffic and volume are all larger, when using single channel detection branch to test, for ensureing the gas flow of inlet passage, need the stop valve of all the other detection branch of temporary close, vehicle exhaust enters three-way catalytic converter 20 and carries out catalytic reaction after the stop valve 3 in single channel detection branch, then under air pump 21 acts on, air filter 7 dedusting is entered, more emptying after exhaust gas analyzer 10 detects.
Detection device of the present invention both can compare in real time, detect the catalytic performance of the exhaust purifier of multiple small volume under identical conditions, reach the object improving catalyst screening efficiency, also can test and performance evaluation the three-way catalytic converter of full flow, large volume, and draw truly, testing result accurately.
Claims (6)
1. a Multi-channel detecting device for automobile exhaust purifier, it is characterized in that, comprise the pneumatic tube (2) for connecting vehicle exhaust relief opening (1), described pneumatic tube (2) is parallel with some by stop valve (3), exhaust purifier (5), air filter (7), the detection branch that exsiccator (8) and flow dontroller (9) are formed after placed in series, the output terminal of the flow dontroller (9) in described each detection branch is all connected to exhaust gas analyzer (10), outlet pipe (11) is connected with at the output terminal of described exhaust gas analyzer (10), the pipeline that the output terminal of the stop valve (3) in described each detection branch connects all connects with corresponding exhaust purifier (5) through temperature control box (4), the pipeline of the output terminal connection of the exhaust purifier (5) in described each detection branch all through cold be that device (6) connects with corresponding air filter (7), exhaust purifier (5) in described each bar detection branch is all arranged in HEATING BOX (12).
2. according to the Multi-channel detecting device for automobile exhaust purifier described in claim 1, it is characterized in that, described pneumatic tube (2) is also parallel with one by the single channel detection branch formed after the series connection of stop valve (3), three-way catalytic converter (20), air filter (7) and air pump (21), the output terminal of described air pump (21) connects the input end of exhaust gas analyzer (10).
3. according to the Multi-channel detecting device for automobile exhaust purifier described in claim 1, it is characterized in that, be provided with in the bottom of described temperature control box (4) heater (1 day, on the top of described temperature control box (4), frequency conversion radiation fan (16) is installed.
4. according to the Multi-channel detecting device for automobile exhaust purifier described in claim 1, it is characterized in that, in described condenser (6), being provided with radiator for semiconductor (17) and for regulating the temp controller (18) of radiator for semiconductor (17).
5. according to the Multi-channel detecting device for automobile exhaust purifier described in claim 1, it is characterized in that, described pneumatic tube (2) is also connected with an exhaust branch pipe (19), described exhaust branch pipe (19) is provided with relief valve (13) and silencing apparatus (14).
6. according to the Multi-channel detecting device for automobile exhaust purifier described in claim 1, it is characterized in that, the volume of described exhaust purifier (5) is more than or equal to 5ml.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410619498.XA CN104454101A (en) | 2014-11-07 | 2014-11-07 | Multi-channel detection device for automobile exhaust purifiers |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410619498.XA CN104454101A (en) | 2014-11-07 | 2014-11-07 | Multi-channel detection device for automobile exhaust purifiers |
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| CN104454101A true CN104454101A (en) | 2015-03-25 |
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| CN201410619498.XA Pending CN104454101A (en) | 2014-11-07 | 2014-11-07 | Multi-channel detection device for automobile exhaust purifiers |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065096A (en) * | 2015-09-18 | 2015-11-18 | 天津大学 | Variable combination and multi-channel sampling method and variable combination and multi-channel sampling device of engine postprocessor |
| CN106556676A (en) * | 2016-10-27 | 2017-04-05 | 中法渤海地质服务有限公司 | A kind of detection means and detection method for multi-channel gas |
| CN107167333A (en) * | 2017-06-16 | 2017-09-15 | 苏州博菡环保科技有限公司 | A kind of performance detecting system for automobile tail gas purifier |
-
2014
- 2014-11-07 CN CN201410619498.XA patent/CN104454101A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065096A (en) * | 2015-09-18 | 2015-11-18 | 天津大学 | Variable combination and multi-channel sampling method and variable combination and multi-channel sampling device of engine postprocessor |
| CN105065096B (en) * | 2015-09-18 | 2017-12-19 | 天津大学 | Post processor of engine variable combination and multi-channel sampling method |
| CN106556676A (en) * | 2016-10-27 | 2017-04-05 | 中法渤海地质服务有限公司 | A kind of detection means and detection method for multi-channel gas |
| CN107167333A (en) * | 2017-06-16 | 2017-09-15 | 苏州博菡环保科技有限公司 | A kind of performance detecting system for automobile tail gas purifier |
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Application publication date: 20150325 |