CN204287149U - A kind of simulated exhaust pipe device that can be used for NOX sensor test - Google Patents
A kind of simulated exhaust pipe device that can be used for NOX sensor test Download PDFInfo
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- CN204287149U CN204287149U CN201420774482.1U CN201420774482U CN204287149U CN 204287149 U CN204287149 U CN 204287149U CN 201420774482 U CN201420774482 U CN 201420774482U CN 204287149 U CN204287149 U CN 204287149U
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- exhaust pipe
- simulated exhaust
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Abstract
The utility model relates to a kind of simulated exhaust pipe device that can be used for NOX sensor test, it is characterized in that: simulated exhaust pipe body is a stainless steel extra heavy pipe, in simulated exhaust pipe body tube wall both sides with symmetric form processing 1 ~ 10 threaded hole, sensor to be measured is fixedly connected on the threaded hole of simulated exhaust pipe body.It can accurately be tested and demarcate many sensors simultaneously, and the research and development and the work such as production test, demarcation that can be sensor bring very large facility; This device is convenient to be installed, use, can the air-sensitive performance of Measurement accuracy many sensors simultaneously, is particularly suitable for demarcation and the test-purpose of sensor.
Description
Technical field
The utility model relates to a kind of simulated exhaust pipe device that can be used for NOX sensor test, carries out testing, the purposes such as demarcation while being applied to one or many NOX sensors, and the work such as research and development and production test that can be NOX sensor brings very large facility.
Background technology
Current, the whole world faces the integration challenges of the energy and environment.Multinomial research shows: urban automobile tail gas pollution has risen to main atmospheric pollution, therefore, more and more becomes to the research of orthodox car emission control technique the focus that people pay close attention to.Oxides of nitrogen NOX can be described as in vehicle exhaust and endangers one of maximum composition, the health of serious threat people, in state four, state five to vehicle exhaust in the content of NOX have strict restriction.
But want control NOX gas purging, its concentration first must be detected, so just there is NOX sensor.At present, in various NOX detection technique, for people universally recognized a kind of be react decomposed the oxygen concentration change transitions that causes by NOX gas for electric signal to the sensor of NOX gas concentration by design circuit based on zirconia material.This zirconia-type NOX sensor have response rapidly, measure accurately, stability advantages of higher, but this technology once controlled by the enterprise of a few countries such as German, Japanese, as NGK, Continent Group etc., Domestic Scientific Research mechanism is in recent years also in tackling key problem, achieve certain progress, but also need to drop into huge effort.So far, the NOX sensor that domestic automobile is used is all the product buying import substantially, and the NOx sensor of maturation is also by external technology and patent monoply, becomes the key factor restricting Chinese aftertreatment industry.
In the R and D process of NOX sensor, test and the demarcating steps of sensor are extremely important, all very necessary to the lifting of its performance and quality.Therefore, need a kind of specific proving installation to complete the work of this aspect.
Summary of the invention
The purpose of this utility model is to provide a kind of simulated exhaust pipe device that can be used for NOX sensor test, and it can accurately be tested and demarcate many sensors simultaneously, and the research and development and the work such as production test, demarcation that can be sensor bring very large facility; This device is convenient to be installed, use, can the air-sensitive performance of Measurement accuracy many sensors simultaneously, is particularly suitable for demarcation and the test-purpose of sensor.
The technical solution of the utility model is achieved in that a kind of simulated exhaust pipe device that can be used for NOX sensor test, it is characterized in that: simulated exhaust pipe body is a stainless steel extra heavy pipe, in simulated exhaust pipe body tube wall both sides with symmetric form processing 1 ~ 10 threaded hole, sensor to be measured is fixedly connected on the threaded hole of simulated exhaust pipe body, packing washer is had between sensor to be measured and simulated exhaust pipe body, the rear and front end of simulated exhaust pipe body is thin mouth, the front end of simulated exhaust pipe body connects one end of heating mixing chamber by gas piping, the heating mixing chamber other end connects gas cylinder by gas piping, gas piping between heating mixing chamber and gas cylinder is furnished with flowmeter, simulated exhaust pipe body rear end is by gas piping parallel-connected thermo couple and gas analyzer.
The threaded hole of described simulated exhaust pipe body both sides mates with the thread size of sensor to be measured; The diameter of simulated exhaust pipe body should be greater than sensor probe top to be measured to 2 times of screw thread upper surface distance, and the diameter range of simulated exhaust pipe body is between 50-200mm.
Good effect of the present utility model is that the gas that it consumes in sensor test process is few, can also reduce the pollution to environment while reducing costs; Measure accurately, simple to operate, and also cost of manufacture is lower, can reuse for a long time; Many NOX sensors can be tested simultaneously, this improves research and development or production efficiency.
Accompanying drawing explanation
Fig. 1 is johning knot composition of the present utility model.
Fig. 2 is simulated exhaust duct ligation composition of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further: as Fig. 1, shown in 2, a kind of simulated exhaust pipe device that can be used for NOX sensor test, it is characterized in that: simulated exhaust pipe body 7 is a stainless steel extra heavy pipe, in simulated exhaust pipe body 7 tube wall both sides with symmetric form processing 1 ~ 10 threaded hole 8, sensor 1 to be measured is fixedly connected on the threaded hole 8 of simulated exhaust pipe body 7, packing washer is had between sensor 1 to be measured and simulated exhaust pipe body 7, the rear and front end of simulated exhaust pipe body 7 is thin mouth, the front end of simulated exhaust pipe body 7 connects one end of heating mixing chamber 2 by gas piping 3, heating mixing chamber 2 other end connects gas cylinder 5 by gas piping 3, gas piping 3 between heating mixing chamber 2 and gas cylinder 5 is furnished with flowmeter 4, simulated exhaust pipe body 7 rear end is by gas piping 3 parallel-connected thermo couple 6 and gas analyzer 9.
The threaded hole 8 of described simulated exhaust pipe body 7 both sides mates with the thread size of sensor 1 to be measured; The diameter of simulated exhaust pipe body 7 should be greater than sensor 1 to be measured and pop one's head in top to 2 times of screw thread upper surface distance, and the diameter range of simulated exhaust pipe body 7 is between 50-200mm.
Test example 1: first measure sensor probe head is 3cm to the distance of screw thread lower surface, thread size is M16, therefore choose stainless-steel tube that diameter (external diameter) is 7cm as gas outlet main body, length is 40cm; Then these pipe two ends tightened up and use diameter to be that the stainless-steel tube of 0.5cm draws 10cm respectively, requiring that weld seam leakproofness is good; Process 8 sensor mounting hole in stainless steel extra heavy pipe both sides, near hole, tube wall thickeies, and tapping becomes the threaded hole of M16 size, makes constructional device as shown in Figure 2.
Be arranged on the threaded hole 8 of gas outlet both sides by eight sensors 1 during measurement, air intake opening connects heating mixing chamber 2 by gas circuit 3, heating mixing chamber front end to be connected with flowmeter 4 that multichannel is equipped with gas with various by gas circuit 3 again 5; Gas cylinder gas outlet is connected on gas analyzer 9 and measures accurate gas concentration in good time, and in gas outlet 7 rear end, gas indoor actual temperature measured by access thermopair 6, and is adjusted to temperature required by heating mixing chamber.As shown in Figure 1.
Test example 2: first measure sensor probe head is 3.5cm to the distance of screw thread lower surface, thread size is M16, therefore choose stainless-steel tube that diameter (external diameter) is 8cm as gas outlet main body, length is 40cm; Then these pipe two ends tightened up and use diameter to be that the stainless-steel tube of 0.5cm draws 10cm respectively, requiring that weld seam leakproofness is good; Process 4 sensor mounting hole in stainless steel extra heavy pipe both sides, near hole, tube wall thickeies, and tapping becomes the threaded hole of M16 size, makes simulated exhaust pipe.
Be arranged on the threaded hole 8 of gas outlet both sides by 4 sensors 1 during measurement, air intake opening connects heating mixing chamber 2 by gas circuit 3, heating mixing chamber front end to be connected with flowmeter 4 that multichannel is equipped with gas with various by gas circuit 3 again 5; Gas cylinder gas outlet is connected on gas analyzer 9 and measures accurate gas concentration in good time, and in gas outlet 7 rear end, gas indoor actual temperature measured by access thermopair 6, and is adjusted to temperature required by heating mixing chamber, so, can demarcate sensor and test.
Claims (2)
1. one kind can be used for the simulated exhaust pipe device of NOX sensor test, it is characterized in that: simulated exhaust pipe body is a stainless steel extra heavy pipe, in simulated exhaust pipe body tube wall both sides with symmetric form processing 1 ~ 10 threaded hole, sensor to be measured is fixedly connected on the threaded hole of simulated exhaust pipe body, packing washer is had between sensor to be measured and simulated exhaust pipe body, the rear and front end of simulated exhaust pipe body is thin mouth, the front end of simulated exhaust pipe body connects one end of heating mixing chamber by gas piping, the heating mixing chamber other end connects gas cylinder by gas piping, gas piping between heating mixing chamber and gas cylinder is furnished with flowmeter, simulated exhaust pipe body rear end is by gas piping parallel-connected thermo couple and gas analyzer.
2., according to a kind of simulated exhaust pipe device that can be used for NOX sensor test described in claim 1, it is characterized in that the threaded hole of described simulated exhaust pipe body both sides mates with the thread size of sensor to be measured; The diameter of simulated exhaust pipe body should be greater than sensor probe top to be measured to 2 times of screw thread upper surface distance, and the diameter range of simulated exhaust pipe body is between 50-200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420774482.1U CN204287149U (en) | 2014-12-10 | 2014-12-10 | A kind of simulated exhaust pipe device that can be used for NOX sensor test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420774482.1U CN204287149U (en) | 2014-12-10 | 2014-12-10 | A kind of simulated exhaust pipe device that can be used for NOX sensor test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204287149U true CN204287149U (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420774482.1U Expired - Fee Related CN204287149U (en) | 2014-12-10 | 2014-12-10 | A kind of simulated exhaust pipe device that can be used for NOX sensor test |
Country Status (1)
| Country | Link |
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| CN (1) | CN204287149U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424542A (en) * | 2015-11-04 | 2016-03-23 | 中国直升机设计研究所 | Calibrating method used for fire extinguishing agent concentration measuring system |
| CN105424876A (en) * | 2015-11-04 | 2016-03-23 | 中国直升机设计研究所 | Calibrating device for fire extinguishing agent concentration measuring system |
| CN105572307A (en) * | 2016-01-28 | 2016-05-11 | 河北先河环保科技股份有限公司 | Calibration tool for gas sensors and calibration method |
| CN111308018A (en) * | 2020-03-14 | 2020-06-19 | 深圳聚德寿科技有限公司 | Nitrogen-oxygen sensor calibration test system and operation method |
-
2014
- 2014-12-10 CN CN201420774482.1U patent/CN204287149U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424542A (en) * | 2015-11-04 | 2016-03-23 | 中国直升机设计研究所 | Calibrating method used for fire extinguishing agent concentration measuring system |
| CN105424876A (en) * | 2015-11-04 | 2016-03-23 | 中国直升机设计研究所 | Calibrating device for fire extinguishing agent concentration measuring system |
| CN105572307A (en) * | 2016-01-28 | 2016-05-11 | 河北先河环保科技股份有限公司 | Calibration tool for gas sensors and calibration method |
| CN111308018A (en) * | 2020-03-14 | 2020-06-19 | 深圳聚德寿科技有限公司 | Nitrogen-oxygen sensor calibration test system and operation method |
| CN111308018B (en) * | 2020-03-14 | 2024-01-05 | 深圳聚德寿科技有限公司 | Nitrogen-oxygen sensor calibration test system and operation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20191210 |