CN216082684U - Detection and comparison device for post-treatment nitrogen-oxygen sensor - Google Patents
Detection and comparison device for post-treatment nitrogen-oxygen sensor Download PDFInfo
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- CN216082684U CN216082684U CN202122381813.8U CN202122381813U CN216082684U CN 216082684 U CN216082684 U CN 216082684U CN 202122381813 U CN202122381813 U CN 202122381813U CN 216082684 U CN216082684 U CN 216082684U
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Abstract
The utility model discloses a detection and comparison device for a post-treatment nitrogen-oxygen sensor, which comprises: the body, first heating circle, second heating circle, first sensor seat hole, second sensor seat hole, first air inlet, second air inlet, gas outlet and relief pressure valve. The first heating ring is wrapped on one end of the body. The second heating ring is wrapped on the other end of the body. The first sensor seat hole is opened on the body and is used for installing a first NOx sensor. The second sensor seat hole is opened on the body and is used for installing a second NOx sensor. The first air inlet is arranged on the body and used for providing zero air. The second air inlet is arranged on the body and used for providing standard air. The air outlet is arranged on the body. The pressure reducing valve is connected with the air outlet through a pipeline. The post-treatment nitrogen-oxygen sensor detection and comparison device is simple and reasonable in structure, portable and easy to operate, and can be used for quickly performing comparison and detecting problems.
Description
Technical Field
The utility model relates to the technical field of equipment manufacturing of whole vehicle engines, in particular to a detection comparison device of a post-processing nitrogen-oxygen sensor.
Background
The nitrogen-oxygen sensor is an important reference basis for the controller to spray urea, but the accuracy of the nitrogen-oxygen sensor cannot be guaranteed after long-term use. Therefore, it is of great significance to regularly check the corresponding emission control, namely, the pollutant emission reaches the standard. Then, in the prior art, a post-processing nitrogen-oxygen sensor detection comparison device is not arranged, so that detection cannot be carried out and deviation cannot be found.
The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a detection and comparison device for a post-treatment nitrogen-oxygen sensor, which has a simple and reasonable structure, is portable and easy to operate, can be used for quickly performing comparison and detecting problems.
In order to achieve the above object, the present invention provides a detection and comparison device for a post-treatment nitrogen-oxygen sensor, comprising: the body, first heating circle, second heating circle, first sensor seat hole, second sensor seat hole, first air inlet, second air inlet, gas outlet and relief pressure valve. The first heating ring is wrapped on one end of the body. The second heating ring is wrapped on the other end of the body. The first sensor seat hole is formed in the body and used for installation of the first NOx sensor. The second sensor seat hole is formed in the body and used for installation of a second NOx sensor. The first air inlet is arranged on the body and used for providing zero air. The second air inlet is arranged on the body and used for providing standard air. The air outlet is arranged on the body. The pressure reducing valve is connected with the air outlet through a pipeline.
In one embodiment of the present invention, the first sensor seat hole is adjacent to the first heating ring, and the second sensor seat hole is adjacent to the second heating ring.
In an embodiment of the utility model, the first heating ring is configured to heat the first NOx sensor so that the first NOx sensor quickly reaches the dew point temperature to read the NOx effective value.
In an embodiment of the utility model, the second heating ring is configured to heat the second NOx sensor so that the second NOx sensor quickly reaches the dew point temperature to read the NOx effective value.
In an embodiment of the present invention, the body is a cylinder, and two ends of the body have sealing parts.
In one embodiment of the present invention, the pressure of the pressure output port of the pressure reducing valve can be controlled by adjusting the pressure reducing valve.
In one embodiment of the present invention, the material of the body is steel.
Compared with the prior art, the detection and comparison device for the post-treatment nitrogen-oxygen sensor has the advantages of simple and reasonable structure, portability, easiness in operation, capability of quickly performing comparison and problem detection.
Drawings
FIG. 1 is a schematic structural diagram of a detection and comparison device of a post-processing NOx sensor according to an embodiment of the utility model.
Description of the main reference numerals:
1-body, 2-first heating ring, 3-second heating ring, 4-first sensor seat hole, 5-second sensor seat hole, 6-first air inlet, 7-second air inlet, 8-air outlet, 9-pressure reducing valve, 10-.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
FIG. 1 is a schematic structural diagram of a detection and comparison device of a post-processing NOx sensor according to an embodiment of the utility model. As shown in fig. 1, a post-treatment nitroxide sensor detection comparison device according to a preferred embodiment of the present invention includes: the sensor comprises a body 1, a first heating ring 2, a second heating ring 3, a first sensor seat hole 4, a second sensor seat hole 5, a first air inlet 6, a second air inlet 7, an air outlet 8 and a pressure reducing valve 9. The first heating ring 2 is wrapped on one end of the body 1. The second heating ring 3 is wrapped on the other end of the body 1. The first sensor seat hole 4 is opened on the body 1, and the first sensor seat hole 4 is used for installing a first NOx sensor. The second sensor socket hole 5 is opened on the body 1, and the second sensor socket hole 5 is used for installing a second NOx sensor. The first air inlet 6 is arranged on the body 1, and the first air inlet 6 is used for providing zero air. The second air inlet 7 is arranged on the body 1, and the second air inlet 7 is used for providing standard air. The air outlet 8 is arranged on the body 1. The pressure reducing valve 9 is connected with the air outlet 8 through a pipeline.
In one embodiment of the utility model, the first sensor housing hole 4 is close to the first heating ring 2 and the second sensor housing hole 5 is close to the second heating ring 3. The first heating ring 2 is used for heating the first NOx sensor, so that the first NOx sensor quickly reaches dew point temperature to read NOx effective value.
In an embodiment of the utility model, the second heating ring 3 is used to heat the second NOx sensor, so that the second NOx sensor quickly reaches the dew point temperature reading NOx effective value. The body 1 is a cylinder, and two ends of the body 1 are provided with sealing parts.
In one embodiment of the present invention, the pressure of the pressure output port 10 of the pressure reducing valve 9 can be controlled by adjusting the pressure reducing valve 9. The body 1 is made of steel.
In practical application, the body 1 of the detection and comparison device for the post-treatment nitrogen-oxygen sensor is a cylindrical verification box, and the first heating ring 2 and the second heating ring 3 are symmetrically wrapped at two ends of the body 1 and used for reading an effective NOx value when the NOx sensor quickly reaches a dew point temperature. A first sensor seat hole 4 and a second sensor seat hole 5, which are symmetrical at the same time, are used for mounting the NOx sensor to be inspected (first NOx sensor) and the standard NOx sensor (second NOx sensor), respectively. The circular tip in 1 both sides of body, the circular tip of one side is sealed to be dismantled, the circular tip of opposite side has protruding zero gas air inlet (first air inlet 6) of two places and volume apart from the gas air inlet (second air inlet 7) also can dismantle sealed, first air inlet 6 and second air inlet 7 can provide unified zero gas and standard gas for the NOx sensor, also can tear down the gas mixture that the circular tip in both sides let in different concentrations simultaneously, be convenient for by inspection NOx sensor and standard NOx sensor simultaneous measurement. While the pressure outlet 10 has a regulating function, the pressure being controlled by the pressure reducing valve 9. The comparison result can be rapidly obtained by comparing the NOx effective values read by the two NOx sensors, so that whether the detection of the NOx sensor to be detected is deviated or not is judged, and the deviation value can be rapidly read through the diagnostic instrument.
In summary, the detection and comparison device for the post-treatment nitrogen-oxygen sensor has the following beneficial effects:
1. the structure is simple and reasonable;
2. the device is portable and easy to operate, and the deviation is quickly read by a diagnostic instrument by comparing a standard NOx sensor with a detected NOx sensor to detect the problem;
3. the heating and constant temperature function is realized, the detection gas can be heated, the NOx sensor can quickly reach the dew point temperature, and the normal measurement temperature is ensured;
4. through adjusting the circular end surfaces and the air inlets on the two sides, standard air can be introduced, and engine exhaust gas can also be introduced, and the flow speed is adjusted through adjusting the pressure reducing valve, so that the gas can be uniformly mixed.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the utility model and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the utility model and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.
Claims (7)
1. A detection comparison device for a post-processing nitrogen-oxygen sensor is characterized by comprising:
a body;
the first heating ring is wrapped on one end of the body;
the second heating ring is wrapped on the other end of the body;
the first sensor seat hole is formed in the body and used for installing a first NOx sensor;
the second sensor seat hole is formed in the body and used for mounting a second NOx sensor;
the first air inlet is formed in the body and used for providing zero air;
the second air inlet is arranged on the body and used for providing standard air;
the air outlet is formed in the body; and
and the pressure reducing valve is connected with the air outlet through a pipeline.
2. The aftertreatment nitrogen oxygen sensor detection and comparison device of claim 1, wherein said first sensor seat hole is proximate to said first heating ring and said second sensor seat hole is proximate to said second heating ring.
3. The aftertreatment nitrogen oxide sensor detection comparison device of claim 2, wherein the first heating ring is used for heating the first NOx sensor, so that the first NOx sensor quickly reaches a dew point temperature to read an NOx effective value.
4. The aftertreatment nitrogen oxide sensor detection comparison device of claim 2, wherein the second heating ring is used for heating the second NOx sensor, so that the second NOx sensor quickly reaches a dew point temperature to read an effective NOx value.
5. The apparatus of claim 2, wherein the body is a cylinder and the body has sealing portions at two ends.
6. The aftertreatment nitrogen oxygen sensor detection and comparison device of claim 1, wherein the pressure of the pressure output port of the pressure reducing valve can be controlled by adjusting the pressure reducing valve.
7. The detection and comparison device of claim 1, wherein the body is made of steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122381813.8U CN216082684U (en) | 2021-09-29 | 2021-09-29 | Detection and comparison device for post-treatment nitrogen-oxygen sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122381813.8U CN216082684U (en) | 2021-09-29 | 2021-09-29 | Detection and comparison device for post-treatment nitrogen-oxygen sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216082684U true CN216082684U (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122381813.8U Active CN216082684U (en) | 2021-09-29 | 2021-09-29 | Detection and comparison device for post-treatment nitrogen-oxygen sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN216082684U (en) |
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2021
- 2021-09-29 CN CN202122381813.8U patent/CN216082684U/en active Active
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