CN205538815U - A full-flow motorcycle exhaust gas measurement system - Google Patents

Abstract

The utility model provides a full-flow motorcycle tail gas measurement system, its characterized in that: the device comprises a background gas sampling module, a dilution exhaust sampling module, a continuous sampling port, a gas measurement and analysis module, a three-way electromagnetic valve and an upper computer, wherein the background gas sampling module and the dilution exhaust sampling module are connected with one end of the three-way electromagnetic valve, the other two ends of the three-way electromagnetic valve are respectively connected with the continuous sampling port and the gas measurement and analysis module, and the gas measurement and analysis module comprises an FID (flame ionization detector), a CLD (chemical vapor deposition) chemical luminescence NOx analyzer and an NDIR (non-dispersive infrared spectrometer). The utility model has the advantages that: the remote control of an upper computer is adopted, so that real-time monitoring, data recording and processing can be realized; the Ethernet communication is adopted, so that the data transmission speed is high; the analyzer adopts Model 600FID, MODEL 600CLD and MODEL 600NDIR of CAI company in America, and is stable, reliable, low in failure rate and high in measurement accuracy; full-flow dilution sampling is carried out, and the measurement precision of equipment is improved; the relative error is less than or equal to 2 percent by CFO method.

Description

A full-flow motorcycle exhaust gas measurement system

technical field

The utility model relates to the technical field of engine tail gas detection, in particular to a full-flow motorcycle tail gas measurement system.

Background technique

As a means of transportation, motorcycles undertake certain transportation tasks in cities and towns, especially in some economically underdeveloped areas, due to their low price and low requirements on road conditions due to their convenient travel and storage. It has become the preferred means of transportation for everyone and plays an important role in the development of society. With the development of the modern motorcycle industry, after meeting the performance and comfort requirements of motorcycles, people have higher and higher requirements for environmental protection. The visible substances emitted by motorcycles have caused great harm to our living environment, so it is necessary to Detect whether the smoke level of visible pollutants in the exhaust meets the national standards.

In the past, most of the testing equipment was for the detection of automobiles, and there was still very little detection of motorcycle emissions. However, the exhaust gas emitted by motorcycles has brought great harm to our lives, and it is necessary to detect the exhaust gas emitted by motorcycles. However, with the improvement of national standards, the review of motorcycle exhaust emissions has become increasingly stringent, and the requirements for the control accuracy of the mixture gas concentration of motorcycle engines have also become higher and higher. Therefore, it is necessary to develop a motorcycle exhaust measurement system that can accurately measure the concentration of various gases in the motorcycle exhaust.

Contents of the invention

The problem to be solved by the utility model is to provide a full-flow motorcycle exhaust gas measurement system, which can accurately measure the concentration of various gases in the motorcycle exhaust gas.

The technical scheme adopted by the utility model is: a full-flow motorcycle exhaust gas measurement system, which is characterized in that it includes a background gas sampling module, a diluted exhaust gas sampling module, a continuous sampling port, a gas measurement and analysis module, and a three-way solenoid valve 1. Host computer, the background gas sampling module and the diluted exhaust sampling module are connected to one end of the three-way solenoid valve through a sampling pipeline, and the other two ends of the three-way solenoid valve are respectively connected to the continuous sampling port and the gas measuring port. The analysis module is connected, and the gas measurement and analysis module includes a FID hydrogen flame ionization detector, a CLD chemiluminescence NOx analyzer, and a NDIR non-dispersive infrared analyzer, and the host computer is connected with the FID hydrogen flame ionization detection device respectively. device, CLD chemiluminescence NOx analyzer, and NDIR non-dispersive infrared analyzer, the FID hydrogen flame ionization detector is used to measure and analyze the concentration of hydrocarbons in motorcycle exhaust, and the CLD chemiluminescence NOx analyzer It is used to measure and analyze the concentration of nitrogen oxides in motorcycle exhaust, and the NDIR non-dispersive infrared analyzer is used to measure and analyze the concentrations of carbon monoxide and carbon dioxide in motorcycle exhaust.

Further, the background gas sampling module includes a first filter, a background pump, a first overflow valve, a first gas flow meter, a first solenoid valve module, a first pressure sensor, a second solenoid valve module, Background gas collection bag module.

Further, the first solenoid valve module and the second solenoid valve module respectively include a plurality of solenoid valves, and the background gas collection bag module includes a plurality of background gas collection bags.

Further, the diluted exhaust gas sampling module includes a second filter, a sample gas pump, a second overflow valve, a second gas flow meter, a third solenoid valve module, a second pressure sensor, and a fourth solenoid valve module . The dilution gas collection bag module, the dilution exhaust gas sampling module is used to collect full-flow dilution gas.

Further, the third solenoid valve module and the fourth solenoid valve module respectively include a plurality of solenoid valves, and the dilution gas collection bag module includes a plurality of dilution gas collection bags.

Further, the full-flow motorcycle exhaust measurement system also includes a collection bag cleaning module, and the collection bag cleaning module includes a third filter and a cleaning pump.

Further, a sampling pump, a third overflow valve, and a fourth filter are also provided between the three-way solenoid valve and the gas measurement and analysis module, and the fourth filter is connected to the NDIR non-spectral infrared filter. There is also a condenser between the analyzers.

Further, the gas measurement and analysis module also includes a gas analyzer calibration module, the gas analyzer calibration module includes a splitter, front panel quick plug, gas cylinder standard gas, used to calibrate the FID hydrogen flame ionization detection Device, CLD chemiluminescence NOx analyzer, NDIR non-dispersive infrared analyzer, the splitter is connected with the host computer.

Further, the gas measurement and analysis module also includes a plurality of pressure regulating valves and a plurality of solenoid valves.

Further, the full-flow motorcycle exhaust gas measurement system also includes a communication module, one end of the communication module is connected to the host computer, and the other end is connected to the first pressure sensor, the second pressure sensor and a plurality of solenoid valves connected.

Compared with the prior art, the utility model has the beneficial effects that: the upper computer is used for remote control, the control software uses Windows XP as the platform, the operation interface is simple and easy to understand, easy to operate, and functions such as real-time monitoring, data recording and processing can be realized, and The analysis module can be remotely controlled, with powerful functions; Ethernet communication is adopted, and the data transmission speed is fast; the analysis instrument adopts Model600FID, MODEL 600CLD, and MODEL 600NDIR of CAI Company of the United States as the core measurement components, which are stable, reliable, low failure rate, and high measurement accuracy High; full-flow dilution sampling is used to improve the measurement accuracy of the equipment, and the layout of the whole system is reasonable, beautiful and compact; the relative error of the measurement by the CFO method is ≤ 2% according to the international regulations; the relative error of the measurement by the precision balance method is ≤ 5 %; meet the measurement requirements of motorcycle emission (working condition method) China Phase II and Phase III (GB14622-2007, GB18176-2007), European EC and US EPA and other standards.

Description of drawings

Fig. 1 is a schematic structural view of a full-flow motorcycle exhaust measurement system of the present invention;

In the picture:

1-background gas sampling module; 11-first filter; 12-background pump; 13-first overflow valve; 14-first gas flow meter; 15-first solenoid valve module; 16-first pressure Sensor; 17-second solenoid valve module; 18-background gas collection bag module; 2-dilute exhaust sampling module; 21-second filter; 22-sample gas pump; 23-second overflow valve; 24 -Second gas flow meter; 25-Third solenoid valve module; 26-Second pressure sensor; 27-Fourth solenoid valve module; 28-Dilution gas collection bag module; 3-Collection bag cleaning module; 31- The third filter; 32-cleaning pump; 4-continuous sampling port; 5-three-way solenoid valve; 6-sampling pump; 61-third overflow valve; 62-fourth filter; 63-condenser; 7-gas measurement and analysis module; 71-NDIR non-spectral infrared analyzer; 72-CLD chemiluminescence NOx analyzer; 73-FID hydrogen flame ionization detector; 74-gas cylinder standard gas; 75-front panel quick plug ;76-divider; 771-the first pressure regulating valve; 772-the second pressure regulating valve; 781-the fifth solenoid valve module; 782-the first solenoid valve; 783-the second solenoid valve; 784-the third solenoid valve; 785 - fifth solenoid valve.

detailed description

In order to better understand the utility model, the utility model will be further described below in conjunction with specific embodiments and accompanying drawings.

Referring to Fig. 1, the technical solution adopted by the utility model is: a full-flow motorcycle exhaust gas measurement system, characterized in that it includes a background gas sampling module 1, a diluted exhaust gas sampling module 2, a continuous sampling port 4, and a gas measurement and analysis system. Module 7, three-way solenoid valve 5, host computer 9, the background gas sampling module 1 and the diluted exhaust gas sampling module 2 are connected to one end of the three-way solenoid valve 5 through a sampling pipeline, and the three-way solenoid valve 5 The other two ends are respectively connected with the continuous sampling port 4 and the gas measurement and analysis module 7, and the gas measurement and analysis module includes a FID hydrogen flame ionization detector 73, a CLD chemiluminescence NOx analyzer 72, and an NDIR NOx analyzer. The spectroscopic infrared analyzer 71, the host computer 9 is respectively connected with the FID hydrogen flame ionization detector 73, the CLD chemiluminescence NOx analyzer 72, and the NDIR non-spectral infrared analyzer 71, and the FID hydrogen flame ionization The detector 73 is used to measure and analyze the concentration of hydrocarbons in the motorcycle exhaust, the CLD chemiluminescence NOx analyzer 72 is used to measure and analyze the concentration of nitrogen oxides in the motorcycle exhaust, and the NDIR non-dispersive infrared analyzer 71 Used to measure and analyze the concentration of carbon monoxide and carbon dioxide in motorcycle exhaust.

The FID hydrogen flame ionization detector 73 adopts the Model 600 FID of CAI Company of the United States, the range: 0-4ppm～100000ppm, the linearity: less than 1% of the full scale, the resolution: 0.01ppm, the zero drift: less than the full scale 1%/24hsT90: 1.5s (adjustable); the CLD chemiluminescence NOx analyzer 72 adopts the MODEL 600CLD of CAI Company in the United States, the measuring range: 4ppm～5000ppm, the linearity: less than 1% of the full scale, and the resolution: 0.01 ppm, zero drift: less than 1%/24hs of full scale T90: 1.5s (adjustable); the NDIR non-dispersive infrared analyzer 71 adopts MODEL 600NDIR of CAI Company in the United States, and the range: CO: 0～300, 500, 1500ppm, CO ₂ : 0～5%, 10%, 25%, linearity: less than 0.5% of full scale, resolution: 0.01ppm T90: 1.5s (adjustable).

The background gas sampling module 1 includes a first filter 11, a background pump 12, a first overflow valve 13, a first gas flow meter 14, a first solenoid valve module 15, a first pressure sensor 16, a second solenoid Valve module 17, background gas collection bag module 18.

The first solenoid valve module 15 and the second solenoid valve module 17 respectively include a plurality of solenoid valves, and the background gas collection bag module 18 includes a plurality of background gas collection bags.

The diluted exhaust gas sampling module 2 includes a second filter 21, a sample gas pump 22, a second overflow valve 23, a second gas flow meter 24, a third solenoid valve module 25, a second pressure sensor 26, a fourth Solenoid valve module 27, dilution gas collection bag module 28, the diluted exhaust gas sampling module 2 is used to collect full-flow dilution gas.

The third solenoid valve module 25 and the fourth solenoid valve module 27 respectively include a plurality of solenoid valves, and the dilution gas collection bag module 28 includes a plurality of dilution gas collection bags.

The full-flow motorcycle exhaust measurement system also includes a collection bag cleaning module 3 , and the collection bag cleaning module 3 includes a third filter 31 and a cleaning pump 32 .

A sampling pump 6, a third overflow valve 61, and a fourth filter 62 are also arranged between the three-way solenoid valve 5 and the gas measurement and analysis module 7, and the fourth filter 62 is connected to the NDIR A condenser 63 is also provided between the non-dispersive infrared analyzers.

The gas measurement and analysis module 7 also includes a gas analyzer calibration module, the gas analyzer calibration module includes a splitter 76, a front panel quick plug 75, a gas cylinder standard gas 74, and is used to calibrate the FID hydrogen flame ionization Detector 73 , CLD chemiluminescence NOx analyzer 72 , NDIR non-spectral infrared analyzer 71 , and the splitter 76 is connected to the host computer 9 .

The gas measurement and analysis module 7 also includes a plurality of pressure regulating valves and a plurality of solenoid valves.

The full-flow motorcycle exhaust measurement system also includes a communication module 8, one end of the communication module 8 is connected to the host computer 9, and the other end is connected to the first pressure sensor 16, the second pressure sensor 26 and a plurality of The solenoid valve is connected.

The working process of the utility model is as follows: the utility model is divided into sampling, sample gas analysis and continuous sampling analysis when in use. Among them, sampling is divided into background air bag sampling and dilution exhaust bag sampling, and sample gas analysis is divided into background sample gas analysis, diluted exhaust sample gas analysis, and continuous sampling analysis.

Background air bag sampling process: When the background pump 12 is working, the background gas (air) passes through the first filter 11, the first overflow valve 13, the first gas flow meter 14, the first solenoid valve module 15, the second The solenoid valve module 17 enters a background gas collection air bag in the background gas collection air bag module 18.

Sampling process of the diluted exhaust bag: when the sample gas pump 22 is working, the diluted exhaust gas after full-flow dilution passes through the second filter 21, the second overflow valve 23, the second gas flow meter 24, and the third solenoid valve module. Group 25 and the fourth electromagnetic valve module 27 enter a dilution gas collection air bag in the dilution gas collection air bag module 28 .

The background sample gas analysis process: the sampling pump 6 works, and the background gas in a background gas collection air bag in the background gas collection air bag module 18 passes through the second electromagnetic valve module 17, the first electromagnetic valve module 15, and the three-way electromagnetic valve module. The valve 5, the third overflow valve 61, the fourth filter 62, the condenser 63, the second pressure regulating valve 772, and the fifth solenoid valve module 781 enter the NDIR non-dispersive infrared analyzer 71, and are analyzed by the NDIR non-dispersive infrared analyzer. Instrument 71 analyzes the concentration of CO and _CO in the background gas; when the background gas enters the FID hydrogen flame ionization detector 73 through the first pressure regulating valve 771, the second solenoid valve 783, and the third solenoid valve 784, the FID hydrogen flame ionization Chemical detector 73 analyzes the concentration of hydrocarbons in the background gas; when the background gas enters the CLD chemiluminescence NOx analyzer 72 through the fourth electromagnetic valve 785, the nitrogen oxides in the background gas are analyzed by the CLD chemiluminescence NOx analyzer 72 concentration.

Dilute exhaust sample gas analysis process: the sampling pump 6 works, and the diluted exhaust gas in a dilution gas collection air bag in the dilution gas collection air bag module 28 passes through the fourth solenoid valve module 27, the third solenoid valve module 25, The three-way electromagnetic valve 5, the third overflow valve 61, the fourth filter 62, the condenser 63, the second pressure regulating valve 772, and the fifth electromagnetic valve module 781 enter the NDIR non-spectral infrared analyzer 71, which is determined by the NDIR non-dispersive infrared analyzer. The spectroscopic infrared analyzer 71 analyzes the concentration of CO and _CO in the diluted exhaust gas; when the diluted exhaust gas enters the FID hydrogen flame ionization detector 73 through the first pressure regulating valve 771, the second solenoid valve 783, and the third solenoid valve 784, The concentration of hydrocarbons in the diluted exhaust gas is analyzed by the FID hydrogen flame ionization detector 73; when the diluted exhaust gas enters the CLD chemiluminescence NOx analyzer 72 through the fourth solenoid valve 785, it is analyzed by the CLD chemiluminescence NOx analyzer 72 Dilutes the concentration of nitrogen oxides in the exhaust.

Continuous sampling and analysis process: the sampling pump 6 works, and the diluted exhaust gas after full-flow dilution passes through the continuous sampling port 4, the three-way solenoid valve 5, the third overflow valve 61, the fourth filter 62, the condenser 63, the Two pressure regulating valves 772 and the fifth solenoid valve module 781 enter the NDIR non-dispersive infrared analyzer 71, and the NDIR non-dispersive infrared analyzer 71 analyzes the concentration of CO and _CO in the diluted exhaust gas; through the first pressure regulating valve 771, The second electromagnetic valve 783 and the third electromagnetic valve 784 enter the FID hydrogen flame ionization detector 73, and the concentration of hydrocarbons in the diluted exhaust gas is analyzed by the FID hydrogen flame ionization detector 73; when the diluted exhaust gas passes through the fourth electromagnetic valve 785 enters the CLD chemiluminescence NOx analyzer 72, and the concentration of nitrogen oxides in the diluted exhaust gas is analyzed by the CLD chemiluminescence NOx analyzer 72.

In the above working process of the utility model, the NDIR non-spectral infrared analyzer 71, the FID hydrogen flame ionization detector 73, and the CLD chemiluminescence NOx analyzer 72 directly transmit the analyzed data to the host computer 9, and the host computer 9 Realize the monitoring, recording and processing of data; the first pressure sensor 16 and the second pressure sensor 26 in this full-flow motorcycle exhaust gas measurement system respectively pass the pressure data of the detected background gas and diluted exhaust gas through the communication module 8 Send it to the host computer 9; the host computer 9 also remotely controls the first solenoid valve module 15, the second solenoid valve module 17, the third solenoid valve module 25, the fourth solenoid valve module 27, and the three-way valve through the communication module 8. The solenoid valve 5 , the fifth solenoid valve module 781 , the first solenoid valve 782 , the second solenoid valve 783 , the third solenoid valve 784 , and the fourth solenoid valve 785 are turned on and off.

The utility model also needs the collection bag cleaning module 3 to flush the collection bags of the background gas collection air bag module 18 and the dilution gas collection air bag module 28 before the bag sampling, and the gas used in the flushing process is the third filter. 31 filtered air.

Before sampling and analyzing, the utility model also needs splitter 76, gas cylinder standard gas 74, front panel quick plug 75 to NDIR non-dispersive infrared analyzer 71, FID hydrogen flame ionization detector 73, CLD chemiluminescence NOx analysis Instrument 72 for linear calibration. During linear calibration, the zero gas of the FID hydrogen flame ionization detector 73 is AIR, and the span gas is C3H8; the zero gas of the CLD chemiluminescence NOx analyzer 72 is N2, and the span gas is NO; the NDIR non-spectral infrared analyzer 71 The zero gas is N2, and the span gas is CO, CO2.

The basic principles, main features and advantages of the utility model have been shown above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the basic principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model The utility model also has various changes and improvements, and these changes and improvements all fall within the patent coverage of the claimed utility model scope. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (10)

1. null1. a full flow type motorcycle exhaust measures system，It is characterized in that: include background gas sampling module、Diluted exhaust sampling module、Continuous sampling mouth、Gasmetry analysis module、Three-way magnetic valve、Host computer，Described background gas sampling module is connected by one end of sampling pipe with described three-way magnetic valve with diluted exhaust sampling module，The other two ends of described three-way magnetic valve respectively with described continuous sampling mouth、Gasmetry is analyzed module and is connected，Described gasmetry analysis module includes FID flame ionization ditector、CLD chemoluminescence method NOx analyzer、NDIR not light splitting infrared spectrum analyser，Described host computer respectively with described FID flame ionization ditector、CLD chemoluminescence method NOx analyzer、NDIR not light splitting infrared spectrum analyser is connected，Described FID flame ionization ditector analyzes the concentration of hydrocarbon in motorcycle exhaust for measuring，Described CLD chemoluminescence method NOx analyzer analyzes the concentration of oxynitrides in motorcycle exhaust for measuring，Described NDIR not light splitting infrared spectrum analyser is used for measuring carbon monoxide in analysis motorcycle exhaust、The concentration of carbon dioxide.
2. A kind of full flow type motorcycle exhaust the most according to claim 1 measures system, it is characterised in that: described background gas sampling module includes the first cleaner, background pump, the first overflow valve, the first gas flowmeter, the first magnetic valve module, the first pressure sensor, the second magnetic valve module, background gas collection bag module.
3. A kind of full flow type motorcycle exhaust the most according to claim 2 measures system, it is characterised in that: described first magnetic valve module, the second magnetic valve module include that multiple magnetic valve, described background gas collection bag module include that multiple background gas gathers airbag respectively.
4. A kind of full flow type motorcycle exhaust the most according to claim 1 measures system, it is characterized in that: described diluted exhaust sampling module includes that final cleaner, sample gas pump, the second overflow valve, the second gas flowmeter, the 3rd magnetic valve module, the second pressure sensor, the 4th magnetic valve module, carrier gas collection bag module, described diluted exhaust sampling module are used for gathering Full flow dilution gas.
5. A kind of full flow type motorcycle exhaust the most according to claim 4 measures system, it is characterised in that: described 3rd magnetic valve module, the 4th magnetic valve module include that multiple magnetic valve, described carrier gas collection bag module include that multiple carrier gas gathers airbag respectively.
6. A kind of full flow type motorcycle exhaust the most according to claim 1 measures system, it is characterised in that: described full flow type motorcycle exhaust is measured system and is also included that collection bag cleaning module, described collection bag cleaning module include the 3rd cleaner, clean pump.
7. A kind of full flow type motorcycle exhaust the most according to claim 1 measures system, it is characterized in that: between described three-way connection and gasmetry analysis module, be additionally provided with sampling pump, the 3rd overflow valve, the 4th cleaner, between described 4th cleaner and described NDIR not light splitting infrared spectrum analyser, be additionally provided with condenser.
8. A kind of full flow type motorcycle exhaust the most according to claim 1 measures system, it is characterized in that: described gasmetry analysis module also includes gas analyzer demarcating module, described gas analyzer demarcating module includes splitting instrument, front panel slotting, gas cylinder Standard Gases soon, for demarcating described FID flame ionization ditector, CLD chemoluminescence method NOx analyzer, NDIR not light splitting infrared spectrum analyser, described segmentation instrument is connected with described host computer.
9. A kind of full flow type motorcycle exhaust the most according to claim 1 measures system, it is characterised in that: described gasmetry analysis module also includes multiple pressure regulator valve, multiple magnetic valve.
10. 10. measure system according to a kind of full flow type motorcycle exhaust described in claim 1-4, it is characterized in that: described full flow type motorcycle exhaust is measured system and also included communication module, described communication module one end is connected with described host computer, and the other end is connected with described first pressure sensor, the second pressure sensor and multiple magnetic valve.