CN217107172U - Get gas mechanism, exhaust mechanism, engine exhaust gas detection system and vehicle - Google Patents
Get gas mechanism, exhaust mechanism, engine exhaust gas detection system and vehicle Download PDFInfo
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- CN217107172U CN217107172U CN202123381913.7U CN202123381913U CN217107172U CN 217107172 U CN217107172 U CN 217107172U CN 202123381913 U CN202123381913 U CN 202123381913U CN 217107172 U CN217107172 U CN 217107172U
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Abstract
The utility model relates to a get gas mechanism, exhaust mechanism, engine exhaust gas detection system and vehicle belongs to vehicle engineering technical field, has solved the cross and has got the defect that the trachea exists, including a plurality of pipes of getting that communicate each other, get to be equipped with at least one on tracheal pipe wall and get the gas pocket, at least one gets the gas pocket and is connected with the connecting pipe that is used for installing the nitrogen oxygen sensor probe, be equipped with at least one venthole on the pipe wall of connecting pipe, the axis of venthole and the axis mutually perpendicular who gets the gas pocket adopt the utility model discloses a get gas mechanism can avoid water or other impurity to fall on nitrogen oxygen sensor's probe through the venthole, prolonged nitrogen oxygen sensor's life, get the NOx content in the gas spot more comprehensive reaction tail gas through the increase simultaneously.
Description
Technical Field
The utility model relates to the technical field of vehicles, concretely relates to get gas mechanism, exhaust mechanism, engine tail gas detecting system and vehicle.
Background
The statements herein merely provide background related to the present disclosure and may not necessarily constitute prior art.
The nitrogen-oxygen sensor is an electrical element for measuring NOx content in engine exhaust, a gas taking end is provided with a probe and is arranged in the exhaust, the NOx content in the exhaust is analyzed by taking sample gas in the exhaust, the nitrogen-oxygen sensor is installed on a gas taking mechanism through the gas taking mechanism at present, the gas taking mechanism takes gas from the exhaust, then the NOx content in the exhaust is detected by the nitrogen-oxygen sensor, as shown in figures 1-2, the gas taking mechanism used by the nitrogen-oxygen sensor is a cross gas taking pipe and is installed inside an exhaust tail pipe, multi-point gas taking of the gas in the exhaust tail pipe is realized, the cross gas taking pipe is integrally welded in the tail pipe, the nitrogen-oxygen sensor is arranged at the top end of the cross pipe, gas taking holes are uniformly distributed on the pipe and face the exhaust direction of the exhaust, and the gas outlet position of the gas taking pipe faces the outlet of the exhaust tail pipe.
The inventor finds that the existing air taking mechanism mainly has the following defects:
(1) the existing cross gas taking pipe structure only comprises a transverse gas taking pipe and a vertical gas taking pipe, and has limitation on gas sampling in a tail pipe.
(2) The air intake hole of the air intake pipe is parallel to the axis of the air outlet hole, and the air outlet hole is arranged in the exhaust tail pipe and is opposite to the outlet of the exhaust tail pipe, if the dump truck encounters the situations of water cleaning, rain and snow weather, water accumulation road conditions or car washing and the like, water can directly fall on the probe of the nitrogen oxygen sensor through the air outlet hole, the measurement precision of the nitrogen oxygen sensor is influenced, the service life of the nitrogen oxygen sensor is reduced, and the nitrogen oxygen sensor is cracked seriously, so that the post-treatment performance is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming above-mentioned prior art not enough, providing a mechanism of getting gas, the water of having avoided getting into tail pipe falls on nitrogen oxygen sensor's probe through the venthole, can make nitrogen oxygen sensor's the more comprehensive NOx content that reflects in the tail gas of detection simultaneously.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
in a first aspect, the embodiment of the utility model provides a gas taking mechanism, including a plurality of gas taking pipes that communicate each other, be equipped with at least one gas taking hole on the pipe wall of gas taking pipe, at least one gas taking pipe is connected with the connecting pipe that is used for putting into the nitrogen oxygen sensor probe, be equipped with at least one venthole on the pipe wall of connecting pipe, the axis of venthole and the axis mutually perpendicular who gets the gas hole.
Optionally, the number of the gas taking pipes is four, the gas taking pipes are respectively a first gas taking pipe and a second gas taking pipe which are vertically arranged, a third gas taking pipe is arranged between one end of the second gas taking pipe and the first gas taking pipe, and a fourth gas taking pipe is arranged between the other end of the second gas taking pipe and the first gas taking pipe.
Optionally, a plurality of air intake pipes are in a rice-shaped distribution.
In a second aspect, an embodiment of the present invention provides an exhaust mechanism, including a tail pipe, the tail pipe is provided with the gas taking mechanism of the first aspect.
The third aspect, the embodiment of the utility model provides an engine exhaust gas detection system, including nitrogen oxygen sensor and second aspect exhaust mechanism, nitrogen oxygen sensor's probe is put into and is got in the connecting tube of gas mechanism and nitrogen oxygen sensor is connected with control system.
In a fourth aspect, embodiments of the present invention provide a vehicle, provided with the engine exhaust gas detection system of the third aspect.
Above-mentioned the utility model has the advantages as follows:
1. the utility model discloses a get gas mechanism, the axis of venthole sets up with the axis of getting the venthole is perpendicular, therefore the venthole can not face tail pipe's inlet end and the end of giving vent to anger, has effectively avoided water or impurity etc. to get into the connecting pipe and fall on the probe of oxynitride sensor through the venthole to prolong oxynitride sensor's life, avoided oxynitride sensor to take place to explode and split the phenomenon, guaranteed the aftertreatment performance.
2. The utility model discloses a get gas mechanism gets the trachea and sets up four, get the trachea at original first getting trachea and second and get the trachea basis on, increased the third and got trachea and fourth and get the trachea, the third gets trachea and fourth and gets the trachea and get the trachea with first getting trachea and second and be the contained angle setting or a plurality of gas of getting and adopt rice style of calligraphy to distribute, gets the gas point and increases, has promoted nitrogen oxygen sensor's measurement accuracy, can reflect the NOx content in the tail gas more comprehensively.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the application, and the description of the exemplary embodiments of the application are intended to be illustrative of the application and are not intended to limit the application.
FIG. 1 is a schematic view of a prior art cross gas extraction tube configuration;
FIG. 2 is a schematic view of a conventional cross-shaped intake pipe and exhaust tailpipe assembly;
fig. 3 is a schematic structural view of the gas intake mechanism in embodiment 1 of the present invention;
fig. 4 is an explosion schematic view of the gas taking mechanism in embodiment 1 of the present invention;
FIG. 5 is a schematic view of the assembly of the exhaust mechanism and the NOx sensor according to embodiment 3 of the present invention;
fig. 6 is a side view of the whole structure of embodiment 3 of the present invention viewed from the side of the inlet end face of the tail pipe;
fig. 7 is a side view of the whole structure of embodiment 3 of the present invention viewed from the side of the outlet end face of the tail pipe;
the gas sampling device comprises a gas sampling pipe, a gas sampling hole, a gas sampling pipe, a tail gas sampling pipe and a nitrogen-oxygen sensor, wherein the gas sampling pipe is 1, the first gas sampling pipe, the second gas sampling pipe, the third gas sampling pipe, the fourth gas sampling pipe, the gas sampling pipe, the gas sampling pipe, the gas sampling pipe, the gas sampling pipe, the.
Detailed Description
Example 1
The embodiment provides a gas taking mechanism, as shown in fig. 3-4, which is used for being arranged inside a tail pipe and being capable of installing a probe of a nitrogen-oxygen sensor, taking gas from tail gas exhausted from the tail pipe through the gas taking mechanism, and measuring the content of NOx in the tail gas by using the nitrogen-oxygen sensor installed on the gas taking mechanism.
It is specific, get the trachea that gas mechanism includes a plurality of mutual intercommunications, get and seted up at least one on the trachea and get the gas pocket, it is used for setting up towards tail pipe's inlet end to get the gas pocket, tail gas can get into through getting the gas pocket and get the trachea, tail gas has been realized getting gas, at least one gets tracheal tip and sets up the connecting pipe, the connecting pipe is used for putting into nitrogen oxygen sensor's probe, the connecting pipe is linked together with getting the trachea inner space, consequently, get tracheal tail gas and can get into the connecting pipe through getting the gas pocket, utilize nitrogen oxygen sensor's probe to detect the NOx content in the tail gas.
In this embodiment, only one is got the trachea and is set up connecting pipe 5, and it can be understood that the quantity of getting the trachea that sets up the connecting pipe can set up according to actual need, sets up a plurality of connecting pipes and can set up a plurality of nitrogen oxygen sensors, improves measurement accuracy.
Get the trachea and set up four, be first getting trachea 1, second getting trachea 2, third getting trachea 3 and fourth getting trachea 4 respectively, four get the trachea and communicate each other, and all be provided with a plurality of air intaking holes 6, first getting trachea 1 is connected with connecting pipe 5.
The connecting pipe adopts the pipe of cylinder pipe or square pipe or other types, and the connecting pipe in this embodiment adopts the cylinder pipe, makes things convenient for the processing preparation, and the pipe diameter of connecting pipe 5 is greater than first pipe 1's pipe diameter for connecting pipe 5 is inside to leave sufficient space that is used for installing the nitrogen oxygen sensor probe, simultaneously, can make the tail gas deceleration that gets into connecting pipe 5, makes things convenient for the NOx content in the nitrogen oxygen sensor measurement tail gas.
The end part of the connecting pipe 5 used for connecting the first air intake pipe 1 is provided with a sleeve, and the sleeve is sleeved on the periphery of the end part of the first air intake pipe 1 and is fixed with the first air intake pipe 1. The connecting pipe and the first gas taking pipe are fixed by the sleeve, and the requirement on welding coaxiality of the first gas taking pipe and the connecting pipe is met.
The sleeve pipe and the connecting pipe 5 can adopt an integrated structure or be welded and fixed, and when the sleeve pipe and the connecting pipe 5 are welded and fixed, the connecting position of the sleeve pipe and the connecting pipe 5 is in transition by adopting an arc surface so as to avoid stress concentration between the sleeve pipe and the connecting pipe 5 and ensure the connecting strength.
Be provided with at least one venthole 8 on the pipe wall of connecting pipe 5 for the discharge of the tail gas of entering connecting pipe 5, venthole 8 adopts the hole of circular port or quad slit or other shapes, and for convenient processing, venthole 8 adopts the quad slit.
The axis of venthole 8 and the axis mutually perpendicular who gets gas hole 6 for whole get gas mechanism and install into tail pipe after, venthole 8 can not get into tail pipe's inlet end face and the terminal surface of giving vent to anger, avoided outside water or other impurity to get into connecting pipe 5 through the venthole and fall on the probe of oxynitride sensor, prolonged oxynitride sensor's life.
Set up two ventholes 8 on the pipe wall of connecting pipe 5, two ventholes 8 set up relatively, and 8 symmetries of venthole set up the both sides at connecting pipe 5 axis promptly, and the line at two ventholes 8 centers is the diameter line of 5 cross-section circles of connecting pipe.
Traditional get trachea of getting of gas mechanism sets up two, and two are got trachea mutually perpendicular, can only collect along vertical direction and horizontal direction's tail gas, get gas and have the limitation.
Therefore, four air intake pipes are arranged in the air intake mechanism of the embodiment.
The top of first trachea 1 is provided with connecting pipe 5, and connecting pipe 5 inner space is linked together with first trachea 1 inner space.
Be equipped with the third between the one end of second air intaking pipe 2 and the bottom of first air intaking pipe 1 and get trachea 3, the third is got trachea 3 inner space and is got trachea 1 and second and get 2 inner space and be linked together, and the axis that the trachea 3 was got to the third and first air intaking pipe 1, second is got the axis of trachea 2 and is the acute angle setting.
Be equipped with fourth intake pipe 4 between the other end of second intake pipe 2 and the bottom of first intake pipe 1, the 4 inner space of fourth intake pipe is linked together with first intake pipe 1 and the 2 inner space of second intake pipe, and the fourth intake pipe 4 axis is acute angle setting with the axis that first intake pipe 1 and second intake pipe 2.
Adopt welded fastening between first air intaking pipe 1, second air intaking pipe 2, third air intaking pipe 3 and the fourth air intaking pipe 4 to guarantee to have sufficient mechanical strength between every air intaking pipe.
In other embodiments, the first air intake pipe 1, the second air intake pipe 2, the third air intake pipe 3 and the fourth air intake pipe 4 may also be detachably connected by flanges or the like.
The first air taking pipe 1, the second air taking pipe 2, the third air taking pipe 3 and the fourth air taking pipe 4 are cylindrical pipes or square pipes, and the four air taking pipes in the embodiment are cylindrical pipes, so that the resistance to tail gas flowing can be reduced, and the tail gas can be conveniently discharged.
Compare with traditional cross air intaking pipe, the mechanism of getting gas of this embodiment has increased third air intaking pipe 3 and fourth air intaking pipe 4, has not only realized vertical and horizontal getting gas, has still realized that the slant gets gas, has increased and has got the gas point, has improved the measurement accuracy of nitrogen oxygen sensor, the NOx content in the reaction tail gas that can be more comprehensive.
In other embodiments, five or more air intake pipes can be arranged, a plurality of air intake pipes can be arranged in a shape like a Chinese character mi, and the number of the air intake pipes can be set according to the required measurement precision.
All be provided with at least one air intaking hole 6 on first air intaking pipe 1, second air intaking pipe 2, third air intaking pipe 3 and the fourth air intaking pipe 4, in order to guarantee the air input, all be provided with a plurality of air intaking holes 6 on the four air intaking pipes.
The air intake hole 6 is a circular hole or a square hole or a hole in other shapes, and for processing convenience, the air intake hole 6 is a circular hole, and the size of the air intake hole can be set according to actual needs.
A plurality of air taking holes 6 on the air taking pipe are arranged at equal intervals, in other modes, the air taking holes 6 can also be arranged at unequal intervals, and the arrangement mode can be set according to actual needs.
One end of the first gas taking pipe 1 is connected with the connecting pipe 5, the other end of the first gas taking pipe 1 and two ends of the second gas taking pipe 2 are fixedly connected with the inner pipe wall of the exhaust tail pipe, and the stability of the whole gas taking mechanism fixed in the exhaust tail pipe is guaranteed by utilizing the three-point positioning principle.
In actual processing, if the gas taking pipe is directly welded and fixed with the inner wall of the tail pipe, the operation is inconvenient, therefore, in the embodiment, the end part of the gas taking pipe for fixing with the tail pipe is provided with the fixing plate, specifically, the fixing plate 7 is fixed at the end part of the first gas taking pipe 1 for connecting the tail pipe, the fixing plate 7 is fixed at the two end parts of the second gas taking pipe 2 for connecting the tail pipe, the first gas taking pipe 1 and the second gas taking pipe 2 can be fixed with the tail pipe through the fixing plate 7, the processing is convenient, and the fixing strength is ensured.
The welding of fixed plate 7 is in getting the trachea tip, and the fixed plate includes the flat plate portion and is located the portion of bending at flat plate portion both ends, and the flat plate portion is used for carrying out welded fastening with getting tracheal tip, and the portion of bending is used for carrying out welded fastening with tail pipe's interior pipe surface, and through setting up the flat plate portion, guaranteed to get the trachea and be the plane with the contact surface of fixed plate, guaranteed to get the joint strength of trachea and fixed plate.
In this embodiment, get trachea, fixed plate 7 and connecting pipe 5 and be high temperature resistant metal material and make, conveniently weld and have longer life.
Example 2
The embodiment provides an exhaust mechanism, which comprises a tail pipe 9, wherein the tail pipe 9 is of a cylindrical structure, and the gas taking mechanism in the embodiment 1 is installed inside the tail pipe 9.
Specifically, the bottom end of the first gas taking pipe 1 and the two ends of the second gas taking pipe 2 are fixed on the inner side surface of the tail pipe 9 through fixing plates 7, gas taking holes 6 of the four gas taking pipes are arranged facing the gas inlet end of the tail pipe 3, and the axis of the gas taking holes 6 is parallel to the axis of the tail pipe 3.
Example 3
The embodiment provides an engine exhaust gas detection system, as shown in fig. 5 to 7, including a nitrogen oxygen sensor and the exhaust mechanism of embodiment 2.
The probe of the nox sensor 10 is inserted into the connection pipe 5 after passing through the pipe wall of the tail pipe 9, and is mounted in the same manner as that of the conventional cross gas intake pipe, and will not be described in detail here.
The tail pipe during operation of this embodiment, tail gas gets into four inside getting the gas pipe through getting gas pocket 6, gets the inside tail gas of gas pipe and gets connecting pipe 5 and collect, and NOx content in the probe detection tail gas of nitrogen oxygen sensor 10, tail gas in the connecting pipe 5 is discharged through two ventholes 8.
Because 8 axis of venthole is perpendicular to get the gas hole 6 axis, effectively avoided water directly to pass through tail pipe and contact the probe of nitrogen oxygen sensor 10, prolonged the life of nitrogen appearance sensor.
The nitrogen-oxygen sensor 10 is connected with a control system, can transmit the acquired NOx content information to the control system, and the control system is connected with a display device, and can display the received information on the display device.
Example 4
The embodiment provides a vehicle, which is provided with the engine tail gas detection system in the embodiment 3, and the vehicle is a commercial vehicle, an engineering machinery vehicle, an agricultural machinery vehicle and the like.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (12)
1. The utility model provides a get gas mechanism, includes a plurality of pipes of getting of intercommunication each other, it gets the gas pocket to be equipped with at least one on getting tracheal pipe wall, and at least one gets the gas pocket and is connected with the connecting pipe, be equipped with at least one venthole on the pipe wall of connecting pipe, its characterized in that, the axis of venthole and the axis mutually perpendicular who gets the gas pocket.
2. The air intake mechanism as claimed in claim 1, wherein the four air intake pipes are a first air intake pipe and a second air intake pipe which are vertically arranged, a third air intake pipe is arranged between one end of the second air intake pipe and the first air intake pipe, and a fourth air intake pipe is arranged between the other end of the second air intake pipe and the first air intake pipe.
3. The mechanism of claim 1, wherein the plurality of gas intake pipes are arranged in a shape of a Chinese character mi.
4. The mechanism of claim 1, wherein the end of the gas extraction pipe for fixing to the tail pipe is provided with a fixing plate, and the gas extraction pipe can be fixed inside the tail pipe through the fixing plate.
5. The mechanism of claim 1, wherein the wall of the connecting tube is provided with two air outlets, and the two air outlets are arranged oppositely.
6. The mechanism of claim 1, wherein the connecting tube has a diameter larger than that of the gas intake tube, and the end of the connecting tube for connecting with the gas intake tube is provided with a sleeve through which the connecting tube is connected with the gas intake tube.
7. The air intake mechanism as claimed in claim 1, wherein the air intake pipe has a plurality of air intake holes disposed on its wall, and the plurality of air intake holes are disposed at equal intervals.
8. The air intake mechanism of claim 1, wherein the air intake hole is a circular hole or a square hole.
9. The mechanism of claim 1, wherein the air outlet is a circular hole or a square hole.
10. An exhaust mechanism comprising a tail pipe having a gas extraction mechanism as claimed in any one of claims 1 to 9 disposed therein.
11. An engine exhaust gas detection system, characterized by, including nitrogen oxygen sensor and the exhaust mechanism of claim 10, nitrogen oxygen sensor's probe is put into the connecting tube of mechanism of getting gas, and nitrogen oxygen sensor is connected with control system.
12. A vehicle characterized by being provided with the engine exhaust gas detection system according to claim 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123381913.7U CN217107172U (en) | 2021-12-29 | 2021-12-29 | Get gas mechanism, exhaust mechanism, engine exhaust gas detection system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123381913.7U CN217107172U (en) | 2021-12-29 | 2021-12-29 | Get gas mechanism, exhaust mechanism, engine exhaust gas detection system and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN217107172U true CN217107172U (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123381913.7U Active CN217107172U (en) | 2021-12-29 | 2021-12-29 | Get gas mechanism, exhaust mechanism, engine exhaust gas detection system and vehicle |
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| Country | Link |
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| CN (1) | CN217107172U (en) |
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2021
- 2021-12-29 CN CN202123381913.7U patent/CN217107172U/en active Active
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